技术领域technical field
本发明涉及通信领域，特别涉及一种选择服务小区的方法、设备及系统。The present invention relates to the communication field, in particular to a method, equipment and system for selecting a serving cell.
背景技术Background technique
在无线通信系统中，通常采用异构网络结构。针对异构网络结构中发射功率较高(例如46dBm)的宏基站所服务的宏小区(macro cell)而言，其内部还分布有一至多个发射功率较低(例如30dBm)的微基站，微基站所覆盖的范围称为微小区(pico cell)。对于宏小区内的终端而言，选择哪个基站服务的小区作为终端的上、下行服务小区，将影响到网络的整体服务质量。In a wireless communication system, a heterogeneous network structure is usually adopted. For the macro cell (macro cell) served by a macro base station with a higher transmission power (for example, 46dBm) in a heterogeneous network structure, there are also one or more micro base stations with a lower transmission power (for example, 30dBm). The area covered is called a pico cell. For a terminal in a macro cell, which cell served by the base station is selected as the uplink and downlink serving cell of the terminal will affect the overall service quality of the network.
现有技术在为终端选择下行服务小区时，由于终端通常选择下行RSRP(ReferenceSignal Reception Power，参考信号接收功率)比较大的小区进行接入，而宏基站所服务的宏小区的下行RSRP比较大，因而通常选择将宏基站所服务的宏小区作为终端的下行服务小区；为终端选择上行服务小区时，则先根据终端与各个基站之间的距离以及各个基站的接收天线增益确定终端与各个基站的路径损耗(path loss)，再选择最小路径损耗对应的基站所服务的小区作为终端的上行服务小区。In the prior art, when selecting a downlink serving cell for a terminal, since the terminal usually selects a cell with a relatively large downlink RSRP (Reference Signal Reception Power, reference signal received power) for access, and the macro cell served by the macro base station has a relatively large downlink RSRP, Therefore, the macro cell served by the macro base station is usually selected as the downlink serving cell of the terminal; when selecting an uplink serving cell for the terminal, first determine the distance between the terminal and each base station according to the distance between the terminal and each base station and the receiving antenna gain of each base station. Path loss (path loss), and then select the cell served by the base station corresponding to the minimum path loss as the uplink serving cell of the terminal.
在实现本发明的过程中，发明人发现现有技术至少存在以下问题：In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:
如果宏小区内的终端位于微小区的边缘，该终端与宏基站的距离大于该终端与微基站的距离，则在该终端与宏基站进行上行通信时，对于微基站而言，该终端的发射功率较大，因而会对微基站产生影响，使微小区的系统性能变差，网络的整体服务质量降低。If the terminal in the macro cell is located at the edge of the micro cell, and the distance between the terminal and the macro base station is greater than the distance between the terminal and the micro base station, then when the terminal performs uplink communication with the macro base station, for the micro base station, the transmission of the terminal The power is relatively high, so it will affect the micro base station, degrade the system performance of the micro cell, and reduce the overall service quality of the network.
发明内容Contents of the invention
为了解决现有技术的问题，本发明实施例提供了一种选择服务小区的方法、设备及系统。所述技术方案如下：In order to solve the problems in the prior art, embodiments of the present invention provide a method, device and system for selecting a serving cell. Described technical scheme is as follows:
第一方面，提供了一种选择服务小区的方法，所述方法包括：In a first aspect, a method for selecting a serving cell is provided, the method comprising:
在宏基站服务的终端中确定相对微基站的强干扰终端，所述微基站为在所述宏基站所服务的宏小区内设置的一至多个微基站；Determining, among the terminals served by the macro base station, terminals with strong interference relative to the micro base station, where the micro base station is one or more micro base stations set up in the macro cell served by the macro base station;
将确定的所述强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将所述对应的微基站所服务的微小区作为所述强干扰终端的上行服务小区；Switching the determined uplink communication of the strong interference terminal to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as the uplink serving cell of the strong interference terminal;
所述在宏基站服务的终端中确定相对微基站的强干扰终端，包括：The determination of the strong interference terminal relative to the micro base station among the terminals served by the macro base station includes:
将所述宏基站服务的终端的上行探测参考信号SRS配置信息发送给所述微基站，使得所述微基站根据所述上行SRS配置信息测量所述宏基站服务的终端的SRS，根据所述SRS测量结果计算所述微基站受到所述宏基站服务的终端的干扰水平，并根据所述干扰水平确定所述宏基站服务的终端为相对所述微基站的强干扰终端后，向所述宏基站发送将确定的所述强干扰终端进行切换的通知，所述通知中携带所述强干扰终端的标识；sending the uplink sounding reference signal SRS configuration information of the terminal served by the macro base station to the micro base station, so that the micro base station measures the SRS of the terminal served by the macro base station according to the uplink SRS configuration information, and according to the SRS Calculate the interference level of the micro base station by the terminal served by the macro base station according to the measurement results, and determine that the terminal served by the macro base station is a strong interference terminal relative to the micro base station according to the interference level, and report to the macro base station Sending a notification of switching the determined strong interference terminal, where the notification carries the identity of the strong interference terminal;
接收所述微基站返回的将所述微基站确定的强干扰终端进行切换的通知，根据所述通知中携带的所述强干扰终端的标识确定相对所述微基站的强干扰终端；Receiving a notification returned by the micro base station to switch the strong interference terminal determined by the small base station, and determining a strong interference terminal relative to the small base station according to the identity of the strong interference terminal carried in the notification;
所述根据所述SRS测量结果计算所述微基站受到所述宏基站服务的终端的干扰水平，并根据所述干扰水平确定所述宏基站服务的终端为相对所述微基站的强干扰终端，包括：calculating, according to the SRS measurement result, an interference level of the micro base station by a terminal served by the macro base station, and determining, according to the interference level, that the terminal served by the macro base station is a strong interference terminal relative to the micro base station, include:
将所述微基站测量得到的所述宏基站服务的终端的SRS测量结果作为干扰和噪声部分，并将所述微基站根据所述微基站所服务的终端内的上行SRS配置信息测量得到的所述微基站所服务的终端的SRS测量结果作为传输信号部分，计算所述传输信号部分与所述干扰和噪声部分的比值，得到信干噪比，所述信干噪比为所述微基站受到所述宏基站服务的终端的干扰水平；Taking the SRS measurement result of the terminal served by the macro base station measured by the micro base station as the interference and noise part, and using the SRS measurement result obtained by the micro base station according to the uplink SRS configuration information in the terminal served by the micro base station The SRS measurement result of the terminal served by the micro base station is used as the transmission signal part, and the ratio of the transmission signal part to the interference and noise part is calculated to obtain the signal-to-interference-noise ratio, and the signal-to-interference-noise ratio is the the interference level of terminals served by the macro base station;
将所述干扰水平与预先设置的第一预设门限比较，如果所述干扰水平大于所述第一预设门限，则所述微基站确定所述宏基站服务的终端为相对所述微基站的强干扰终端。Comparing the interference level with a preset first preset threshold, if the interference level is greater than the first preset threshold, the micro base station determines that the terminal served by the macro base station is relative to the micro base station Strong interference terminal.
结合第一方面，在第一种可能的实现方式中：所述将确定的所述强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将所述对应的微基站所服务的微小区作为所述强干扰终端的上行服务小区，包括：With reference to the first aspect, in a first possible implementation manner: the uplink communication of the determined strong interference terminal is switched to the micro cell served by the corresponding micro base station, so that the corresponding micro base station serves The micro cell is used as the uplink serving cell of the strong interference terminal, including:
在所述微基站中选择受所述强干扰终端干扰最大的微基站，将所述强干扰终端的上行通信切换到受所述强干扰终端干扰最大的微基站所服务的微小区，以将受所述强干扰终端干扰最大的微基站所服务的微小区作为所述强干扰终端的上行服务小区。Select the micro base station that is most interfered by the strong interfering terminal among the micro base stations, and switch the uplink communication of the strong interfering terminal to the micro cell served by the micro base station that is most interfered by the strong interfering terminal, so as to The micro cell served by the micro base station that interferes the most with the strong interference terminal serves as the uplink serving cell of the strong interference terminal.
结合第一方面，在第二种可能的实现方式中：所述将确定的所述强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将所述对应的微基站所服务的微小区作为所述强干扰终端的上行服务小区，包括：With reference to the first aspect, in a second possible implementation manner: the uplink communication of the determined strong interference terminal is switched to the micro cell served by the corresponding micro base station, so that the corresponding micro base station serves The micro cell is used as the uplink serving cell of the strong interference terminal, including:
发送测量消息给所述强干扰终端，使得所述强干扰终端测量所述微基站的RSRP，并在所述微基站中选择RSRP最大的微基站，将所述RSRP最大的微基站的小区标识发送给所述宏基站；sending a measurement message to the strong interference terminal, so that the strong interference terminal measures the RSRP of the micro base station, and selects the micro base station with the largest RSRP among the micro base stations, and sends the cell identity of the micro base station with the largest RSRP to the macro base station;
接收所述强干扰终端发送的所述RSRP最大的微基站的小区标识，根据所述RSRP最大的微基站的小区标识将所述强干扰终端的上行通信切换到RSRP最大的微基站所服务的微小区，以将所述RSRP最大的微基站所服务的微小区作为所述强干扰终端的上行服务小区。receiving the cell identity of the micro base station with the largest RSRP sent by the strong interference terminal, and switching the uplink communication of the strong interference terminal to the micro base station served by the micro base station with the largest RSRP according to the cell identity of the micro base station with the largest RSRP area, so that the micro cell served by the micro base station with the largest RSRP is used as the uplink serving cell of the strongly interfering terminal.
第二方面，提供了一种宏基站，所述宏基站包括：In a second aspect, a macro base station is provided, where the macro base station includes:
确定模块，用于在宏基站服务的终端中确定相对微基站的强干扰终端，所述微基站为在所述宏基站所服务的宏小区内设置的一至多个微基站；A determination module, configured to determine, among the terminals served by the macro base station, a terminal with strong interference relative to the micro base station, where the micro base station is one or more micro base stations set up in the macro cell served by the macro base station;
选择模块，用于将所述确定模块确定的所述强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将所述对应的微基站所服务的微小区作为所述强干扰终端的上行服务小区；A selection module, configured to switch the uplink communication of the strong interference terminal determined by the determination module to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as the strong interference terminal The uplink serving cell of the terminal;
所述确定模块，具体用于将所述宏基站服务的终端的上行探测参考信号SRS配置信息发送给所述微基站，使得所述微基站根据所述上行SRS配置信息测量所述宏基站服务的终端的SRS，根据所述SRS测量结果计算所述微基站受到所述宏基站服务的终端的干扰水平，并根据所述干扰水平确定所述宏基站服务的终端为相对所述微基站的强干扰终端后，向所述宏基站发送将确定的所述强干扰终端进行切换的通知，所述通知中携带所述强干扰终端的标识；接收所述微基站返回的将所述微基站确定的强干扰终端进行切换的通知，根据所述通知中携带的所述强干扰终端的标识确定相对所述微基站的强干扰终端；The determination module is specifically configured to send the uplink sounding reference signal SRS configuration information of the terminal served by the macro base station to the micro base station, so that the micro base station measures the SRS configuration information served by the macro base station according to the uplink SRS configuration information. The SRS of the terminal, calculating the interference level of the micro base station by the terminal served by the macro base station according to the SRS measurement result, and determining that the terminal served by the macro base station is a strong interference relative to the micro base station according to the interference level After the terminal, send to the macro base station a notification that the determined strong interference terminal will be handed over, the notification carrying the identification of the strong interference terminal; receive the strong interference determined by the small base station returned by the micro base station Notifying the handover of the interfering terminal, determining the strong interfering terminal relative to the micro base station according to the identity of the strong interfering terminal carried in the notification;
其中，所述根据所述SRS测量结果计算所述微基站受到所述宏基站服务的终端的干扰水平，并根据所述干扰水平确定所述宏基站服务的终端为相对所述微基站的强干扰终端，包括：Wherein, calculating the interference level of the micro base station by the terminal served by the macro base station according to the SRS measurement result, and determining that the terminal served by the macro base station is strong interference with respect to the micro base station according to the interference level terminal, including:
将所述微基站测量得到的所述宏基站服务的终端的SRS测量结果作为干扰和噪声部分，并将所述微基站根据所述微基站所服务的终端内的上行SRS配置信息测量得到的所述微基站所服务的终端的SRS测量结果作为传输信号部分，计算所述传输信号部分与所述干扰和噪声部分的比值，得到信干噪比，所述信干噪比为所述微基站受到所述宏基站服务的终端的干扰水平；Taking the SRS measurement result of the terminal served by the macro base station measured by the micro base station as the interference and noise part, and using the SRS measurement result obtained by the micro base station according to the uplink SRS configuration information in the terminal served by the micro base station The SRS measurement result of the terminal served by the micro base station is used as the transmission signal part, and the ratio of the transmission signal part to the interference and noise part is calculated to obtain the signal-to-interference-noise ratio, and the signal-to-interference-noise ratio is the the interference level of terminals served by the macro base station;
将所述干扰水平与预先设置的第一预设门限比较，如果所述干扰水平大于所述第一预设门限，则所述微基站确定所述宏基站服务的终端为相对所述微基站的强干扰终端。Comparing the interference level with a preset first preset threshold, if the interference level is greater than the first preset threshold, the micro base station determines that the terminal served by the macro base station is relative to the micro base station Strong interference terminal.
结合第二方面，在第一种可能的实现方式中：所述选择模块，具体用于在所述微基站中选择受所述确定模块确定的强干扰终端干扰最大的微基站，将所述强干扰终端的上行通信切换到受所述强干扰终端干扰最大的微基站所服务的微小区，以将受所述强干扰终端干扰最大的微基站所服务的微小区作为所述强干扰终端的上行服务小区。With reference to the second aspect, in a first possible implementation manner: the selecting module is specifically configured to select, among the micro base stations, the micro base station that is most interfered by the strong interfering terminal determined by the determining module, and set the strong The uplink communication of the interfering terminal is switched to the micro cell served by the micro base station that is most interfered by the strong interfering terminal, so that the micro cell served by the micro base station that is most interfered by the strong interfering terminal is used as the uplink communication of the strong interfering terminal Serve the community.
结合第二方面，在第二种可能的实现方式中：所述选择模块，具体用于发送测量消息给所述强干扰终端，使得所述确定模块确定的强干扰终端测量所述微基站的RSRP，并在所述微基站中选择RSRP最大的微基站，将所述RSRP最大的微基站的小区标识发送给所述选择模块；接收所述强干扰终端发送的RSRP最大的微基站的小区标识，根据所述RSRP最大的微基站的小区标识将所述强干扰终端的上行通信切换到RSRP最大的微基站所服务的微小区，以将所述RSRP最大的微基站所服务的微小区作为所述强干扰终端的上行服务小区。With reference to the second aspect, in a second possible implementation manner: the selection module is specifically configured to send a measurement message to the strong interference terminal, so that the strong interference terminal determined by the determination module measures the RSRP of the micro base station , and select the micro base station with the largest RSRP among the micro base stations, and send the cell identity of the micro base station with the largest RSRP to the selection module; receive the cell identity of the micro base station with the largest RSRP sent by the strong interference terminal, According to the cell identity of the micro base station with the largest RSRP, the uplink communication of the strongly interfering terminal is switched to the micro cell served by the micro base station with the largest RSRP, so that the micro cell served by the micro base station with the largest RSRP is used as the The uplink serving cell of the terminal with strong interference.
第三方面，提供了一种选择服务小区的方法，所述方法包括：In a third aspect, a method for selecting a serving cell is provided, the method comprising:
在宏基站服务的终端中确定相对微基站的强干扰终端，所述微基站为在所述宏基站所服务的宏小区内设置的微基站；Determining, among the terminals served by the macro base station, a terminal with strong interference relative to the micro base station, where the micro base station is a micro base station set in a macro cell served by the macro base station;
向所述宏基站发送将确定的所述强干扰终端进行切换的通知，所述通知中携带所述强干扰终端的标识，使所述宏基站根据所述通知中携带的所述强干扰终端的标识确定相对所述微基站的强干扰终端后，将确定的所述强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将所述对应的微基站所服务的微小区作为所述强干扰终端的上行服务小区；sending to the macro base station a notification that the determined strong interference terminal will be handed over, the notification carrying the identity of the strong interference terminal, so that the macro base station After identifying and determining the strong interference terminal relative to the micro base station, switching the uplink communication of the determined strong interference terminal to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as The uplink serving cell of the strong interfering terminal;
所述在宏基站服务的终端中确定相对微基站的强干扰终端，具体包括：The determination of the strong interference terminal relative to the micro base station among the terminals served by the macro base station specifically includes:
接收宏基站发送的宏基站服务的终端的上行探测参考信号SRS配置信息；receiving the uplink sounding reference signal SRS configuration information of the terminal served by the macro base station sent by the macro base station;
根据所述上行SRS配置信息测量所述宏基站服务的终端的SRS，根据所述SRS测量结果计算所述微基站受到所述宏基站服务的终端的干扰水平，并根据所述干扰水平在所述宏基站服务的终端中确定相对所述微基站的强干扰终端；Measure the SRS of the terminal served by the macro base station according to the uplink SRS configuration information, calculate the interference level of the micro base station by the terminal served by the macro base station according to the SRS measurement result, and Determining a strong interference terminal relative to the micro base station among the terminals served by the macro base station;
所述根据所述SRS测量结果计算所述微基站受到所述宏基站服务的终端的干扰水平，并根据所述干扰水平确定所述宏基站服务的终端为相对所述微基站的强干扰终端，包括：calculating, according to the SRS measurement result, an interference level of the micro base station by a terminal served by the macro base station, and determining, according to the interference level, that the terminal served by the macro base station is a strong interference terminal relative to the micro base station, include:
将所述微基站测量得到的所述宏基站服务的终端的SRS测量结果作为干扰和噪声部分，并将所述微基站根据所述微基站所服务的终端内的上行SRS配置信息测量得到的所述微基站所服务的终端的SRS测量结果作为传输信号部分，计算所述传输信号部分与所述干扰和噪声部分的比值，得到信干噪比，所述信干噪比为所述微基站受到所述宏基站服务的终端的干扰水平；Taking the SRS measurement result of the terminal served by the macro base station measured by the micro base station as the interference and noise part, and using the SRS measurement result obtained by the micro base station according to the uplink SRS configuration information in the terminal served by the micro base station The SRS measurement result of the terminal served by the micro base station is used as the transmission signal part, and the ratio of the transmission signal part to the interference and noise part is calculated to obtain the signal-to-interference-noise ratio, and the signal-to-interference-noise ratio is the the interference level of terminals served by the macro base station;
将所述干扰水平与预先设置的第一预设门限比较，如果所述干扰水平大于所述第一预设门限，则所述微基站确定所述宏基站服务的终端为相对所述微基站的强干扰终端。Comparing the interference level with a preset first preset threshold, if the interference level is greater than the first preset threshold, the micro base station determines that the terminal served by the macro base station is relative to the micro base station Strong interference terminal.
第四方面，提供了一种微基站，所述微基站包括：In a fourth aspect, a micro base station is provided, and the micro base station includes:
确定模块，用于在宏基站服务的终端中确定相对所述微基站的强干扰终端，所述微基站为在所述宏基站所服务的宏小区内设置的微基站；A determining module, configured to determine, among terminals served by the macro base station, a terminal with strong interference relative to the micro base station, where the micro base station is a micro base station set in a macro cell served by the macro base station;
发送模块，用于向所述宏基站发送将确定模块确定的所述强干扰终端进行切换的通知，所述通知中携带所述强干扰终端的标识，使所述宏基站根据所述通知中携带的所述强干扰终端的标识确定相对所述微基站的强干扰终端后，将确定的所述强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将所述对应的微基站所服务的微小区作为所述强干扰终端的上行服务小区；A sending module, configured to send to the macro base station a notification of handover of the strong interference terminal determined by the determining module, where the notification carries the identity of the strong interference terminal, so that the macro base station, according to the information carried in the notification, After the identity of the strong interference terminal is determined relative to the strong interference terminal of the micro base station, the uplink communication of the determined strong interference terminal is switched to the micro cell served by the corresponding micro base station, so that the corresponding micro base station The micro cell served by the base station is used as the uplink serving cell of the strong interference terminal;
所述确定模块，具体用于接收宏基站发送的所述宏基站服务的终端的上行探测参考信号SRS配置信息；根据所述上行SRS配置信息测量所述宏基站服务的终端的SRS，根据所述SRS测量结果计算所述微基站受到所述宏基站服务的终端的干扰水平，并根据所述干扰水平在所述宏基站服务的终端中确定相对所述微基站的强干扰终端；The determining module is specifically configured to receive the uplink sounding reference signal SRS configuration information of the terminal served by the macro base station sent by the macro base station; measure the SRS of the terminal served by the macro base station according to the uplink SRS configuration information, and according to the Calculate the interference level of the micro base station by the terminals served by the macro base station according to the SRS measurement results, and determine the strong interference terminal relative to the micro base station among the terminals served by the macro base station according to the interference level;
其中，所述根据所述SRS测量结果计算所述微基站受到所述宏基站服务的终端的干扰水平，并根据所述干扰水平确定所述宏基站服务的终端为相对所述微基站的强干扰终端，包括：Wherein, calculating the interference level of the micro base station by the terminal served by the macro base station according to the SRS measurement result, and determining that the terminal served by the macro base station is strong interference with respect to the micro base station according to the interference level terminal, including:
将所述微基站测量得到的所述宏基站服务的终端的SRS测量结果作为干扰和噪声部分，并将所述微基站根据所述微基站所服务的终端内的上行SRS配置信息测量得到的所述微基站所服务的终端的SRS测量结果作为传输信号部分，计算所述传输信号部分与所述干扰和噪声部分的比值，得到信干噪比，所述信干噪比为所述微基站受到所述宏基站服务的终端的干扰水平；Taking the SRS measurement result of the terminal served by the macro base station measured by the micro base station as the interference and noise part, and using the SRS measurement result obtained by the micro base station according to the uplink SRS configuration information in the terminal served by the micro base station The SRS measurement result of the terminal served by the micro base station is used as the transmission signal part, and the ratio of the transmission signal part to the interference and noise part is calculated to obtain the signal-to-interference-noise ratio, and the signal-to-interference-noise ratio is the the interference level of terminals served by the macro base station;
将所述干扰水平与预先设置的第一预设门限比较，如果所述干扰水平大于所述第一预设门限，则所述微基站确定所述宏基站服务的终端为相对所述微基站的强干扰终端。Comparing the interference level with a preset first preset threshold, if the interference level is greater than the first preset threshold, the micro base station determines that the terminal served by the macro base station is relative to the micro base station Strong interference terminal.
第七方面，提供了一种选择服务小区的系统，所述系统包括：宏基站、微基站和终端；In a seventh aspect, a system for selecting a serving cell is provided, and the system includes: a macro base station, a micro base station, and a terminal;
所述宏基站如上所述的宏基站；The macro base station is the above-mentioned macro base station;
所述微基站如上所述的微基站；The micro base station is the micro base station as described above;
所述终端如上所述的终端。The terminal is a terminal as described above.
本发明实施例提供的技术方案带来的有益效果是：The beneficial effects brought by the technical solution provided by the embodiments of the present invention are:
通过在宏基站服务的终端中确定相对微基站的强干扰终端，并为强干扰终端选择对应的微基站所服务的微小区为上行服务小区，使得距离宏基站较远且距离微基站距离较近的终端具有更好的信道条件，并且降低了该终端的发射功率，减少了功耗；同时该微基站受到的干扰降低，提高了该微基站的服务性能。此外，对于宏小区来说，这些终端距离宏基站较远，对时频资源利用率低，将其切换到微基站之后，宏小区可以有更多的时频资源分配给服务范围内的其他终端，提高了宏小区的服务性能。By determining the strong interference terminal relative to the micro base station among the terminals served by the macro base station, and selecting the corresponding micro cell served by the micro base station as the uplink serving cell for the strong interference terminal, it is farther away from the macro base station and closer to the micro base station The terminal of the terminal has better channel conditions, and the transmission power of the terminal is reduced, reducing power consumption; at the same time, the interference received by the micro base station is reduced, and the service performance of the micro base station is improved. In addition, for the macro cell, these terminals are far away from the macro base station, and the utilization rate of time-frequency resources is low. After switching them to the micro base station, the macro cell can have more time-frequency resources allocated to other terminals within the service range , improving the service performance of the macro cell.
附图说明Description of drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.
图1是本发明实施例一提供的一种选择服务小区的方法流程图；FIG. 1 is a flow chart of a method for selecting a serving cell provided in Embodiment 1 of the present invention;
图2是本发明实施例一提供的另一种选择服务小区的方法流程图；FIG. 2 is a flow chart of another method for selecting a serving cell provided in Embodiment 1 of the present invention;
图3是本发明实施例一提供的另一种选择服务小区的方法流程图；FIG. 3 is a flow chart of another method for selecting a serving cell provided in Embodiment 1 of the present invention;
图4是本发明实施例二提供的一种异构网络中小区干扰的示意图；FIG. 4 is a schematic diagram of cell interference in a heterogeneous network provided by Embodiment 2 of the present invention;
图5是本发明实施例二提供的一种选择服务小区的方法流程图；FIG. 5 is a flowchart of a method for selecting a serving cell according to Embodiment 2 of the present invention;
图6是本发明实施例三提供的一种选择服务小区的方法流程图；FIG. 6 is a flow chart of a method for selecting a serving cell provided in Embodiment 3 of the present invention;
图7是本发明实施例四提供的一种宏基站的结构示意图；FIG. 7 is a schematic structural diagram of a macro base station provided in Embodiment 4 of the present invention;
图8是本发明实施例五提供的一种微基站的结构示意图；FIG. 8 is a schematic structural diagram of a micro base station provided in Embodiment 5 of the present invention;
图9是本发明实施例六提供的一种终端的结构示意图；FIG. 9 is a schematic structural diagram of a terminal provided in Embodiment 6 of the present invention;
图10是本发明实施例六提供的另一种终端的结构示意图；FIG. 10 is a schematic structural diagram of another terminal provided by Embodiment 6 of the present invention;
图11是本发明实施例七提供的一种选择服务小区的系统的结构示意图。FIG. 11 is a schematic structural diagram of a system for selecting a serving cell provided by Embodiment 7 of the present invention.
具体实施方式detailed description
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
实施例一Embodiment one
针对异构网络，其宏小区中通常会分布有一至多个微基站，而微基站所服务的微小区的边缘还将分布有宏基站服务的终端，这些终端与宏基站的距离较远，在与宏基站进行上行通信时会对微基站形成干扰，从而降低微小区的服务质量，为了解决该技术问题，本发明实施例提供了一种选择服务小区的方法。以宏基站侧实现该方法的角度，参见图1，方法流程包括：For a heterogeneous network, one or more micro base stations are usually distributed in the macro cell, and terminals served by the macro base station are also distributed on the edge of the micro cell served by the micro base station. These terminals are far away from the macro base station. When the macro base station performs uplink communication, it will cause interference to the micro base station, thereby reducing the service quality of the micro cell. In order to solve this technical problem, an embodiment of the present invention provides a method for selecting a serving cell. From the perspective of implementing the method on the macro base station side, see Figure 1, the method flow includes:
101：在宏基站服务的终端中确定相对微基站的强干扰终端，微基站为在宏基站所服务的宏小区内设置的一至多个微基站。101: Determine, among the terminals served by the macro base station, a terminal with strong interference with respect to the micro base station, where the micro base station is one or more micro base stations set in a macro cell served by the macro base station.
具体地，在宏基站服务的终端中确定相对微基站的强干扰终端，包括但不限于：Specifically, among the terminals served by the macro base station, the terminal with strong interference relative to the micro base station is determined, including but not limited to:
将宏基站服务的终端的上行SRS配置信息发送给微基站，使得微基站根据上行SRS配置信息测量宏基站服务的终端的SRS，根据SRS测量结果计算微基站受到宏基站服务的终端的干扰水平，并根据干扰水平确定宏基站服务的终端为相对微基站的强干扰终端后，向宏基站发送将确定的强干扰终端进行切换的通知，通知中携带强干扰终端的标识；Send the uplink SRS configuration information of the terminal served by the macro base station to the micro base station, so that the micro base station measures the SRS of the terminal served by the macro base station according to the uplink SRS configuration information, and calculates the interference level of the micro base station by the terminal served by the macro base station according to the SRS measurement result, After determining that the terminal served by the macro base station is a strong interference terminal relative to the micro base station according to the interference level, send a notification to the macro base station to switch the determined strong interference terminal, and the notification carries the identity of the strong interference terminal;
接收微基站返回的将微基站确定的强干扰终端进行切换的通知，根据通知中携带的强干扰终端的标识确定相对微基站的强干扰终端。Receiving a notification returned by the micro base station to switch the strong interference terminal determined by the small base station, and determining a strong interference terminal relative to the small base station according to the identity of the strong interference terminal carried in the notification.
具体地，在宏基站服务的终端中确定相对微基站的强干扰终端，包括但不限于：Specifically, among the terminals served by the macro base station, the terminal with strong interference relative to the micro base station is determined, including but not limited to:
接收宏基站服务的终端发送的宏基站服务的终端测量得到的微基站的RSRP；receiving the RSRP of the micro base station measured by the terminal served by the macro base station and sent by the terminal served by the macro base station;
根据接收到的宏基站服务的终端发送的微基站的RSRP及宏基站服务的终端的上行发射功率在宏基站服务的终端中确定相对微基站的强干扰终端。According to the received RSRP of the micro base station sent by the terminal served by the macro base station and the uplink transmit power of the terminal served by the macro base station, a terminal with strong interference relative to the micro base station is determined among the terminals served by the macro base station.
102：将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区。102: Switch uplink communication of the determined strong interference terminal to a micro cell served by a corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as an uplink serving cell of the strong interference terminal.
具体地，将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区，包括但不限于：Specifically, the uplink communication of the determined strong interference terminal is switched to the micro cell served by the corresponding micro base station, so that the micro cell served by the corresponding micro base station is used as the uplink serving cell of the strong interference terminal, including but not limited to:
在微基站中选择受强干扰终端干扰最大的微基站，将强干扰终端的上行通信切换到受强干扰终端干扰最大的微基站所服务的微小区，以将受强干扰终端干扰最大的微基站所服务的微小区作为强干扰终端的上行服务小区。In the micro base station, select the micro base station that is most interfered by the strong interfering terminal, and switch the uplink communication of the strong interfering terminal to the micro cell served by the micro base station that is most interfered by the strong interfering terminal, so that the micro base station that is most interfered by the strong interfering terminal The served micro cell serves as an uplink serving cell for a terminal with strong interference.
具体地，将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区，包括但不限于：Specifically, the uplink communication of the determined strong interference terminal is switched to the micro cell served by the corresponding micro base station, so that the micro cell served by the corresponding micro base station is used as the uplink serving cell of the strong interference terminal, including but not limited to:
发送测量消息给强干扰终端，使得强干扰终端测量微基站的RSRP，并在微基站中选择RSRP最大的微基站，将RSRP最大的微基站的小区标识发送给宏基站；Send a measurement message to the strong interference terminal, so that the strong interference terminal measures the RSRP of the micro base station, and selects the micro base station with the largest RSRP among the micro base stations, and sends the cell identity of the micro base station with the largest RSRP to the macro base station;
接收强干扰终端发送的RSRP最大的微基站的小区标识，根据RSRP最大的微基站的小区标识将强干扰终端的上行通信切换到RSRP最大的微基站所服务的微小区，以将RSRP最大的微基站所服务的微小区作为强干扰终端的上行服务小区。Receive the cell ID of the micro base station with the largest RSRP sent by the strong interference terminal, and switch the uplink communication of the strong interference terminal to the micro cell served by the micro base station with the largest RSRP according to the cell ID of the micro base station with the largest RSRP, so that the micro base station with the largest RSRP The micro cell served by the base station serves as an uplink serving cell for a terminal with strong interference.
本发明实施例还提供了一种选择服务小区的方法，以微基站实现该方法的角度，参见图2，方法流程包括：The embodiment of the present invention also provides a method for selecting a serving cell. From the perspective of implementing the method with a micro base station, see FIG. 2 , the method flow includes:
201：在宏基站服务的终端中确定相对微基站的强干扰终端，微基站为在宏基站所服务的宏小区内设置的微基站。201: Determine, among terminals served by the macro base station, a terminal with strong interference with respect to the micro base station, where the micro base station is a micro base station set in a macro cell served by the macro base station.
具体地，微基站在宏基站服务的终端中确定相对微基站的强干扰终端，具体包括但不限于：Specifically, the micro base station determines a strong interference terminal relative to the micro base station among terminals served by the macro base station, including but not limited to:
接收宏基站发送的宏基站服务的终端的上行SRS配置信息；receiving uplink SRS configuration information of terminals served by the macro base station sent by the macro base station;
根据上行SRS配置信息测量宏基站服务的终端的SRS，根据SRS测量结果计算微基站受到宏基站服务的终端的干扰水平，并根据干扰水平在宏基站服务的终端中确定相对微基站的强干扰终端。Measure the SRS of the terminal served by the macro base station according to the uplink SRS configuration information, calculate the interference level of the micro base station by the terminal served by the macro base station according to the SRS measurement results, and determine the strong interference terminal relative to the micro base station among the terminals served by the macro base station according to the interference level .
202：向宏基站发送将确定的强干扰终端进行切换的通知，通知中携带强干扰终端的标识，使宏基站根据通知中携带的强干扰终端的标识确定相对微基站的强干扰终端后，将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区。202: Send a notification to the macro base station that the determined strong interference terminal will be handed over, and the notification carries the identity of the strong interference terminal, so that after the macro base station determines the strong interference terminal relative to the micro base station according to the identity of the strong interference terminal carried in the notification, it will The uplink communication of the determined strong interference terminal is switched to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as the uplink serving cell of the strong interference terminal.
本发明实施例还提供了一种选择服务小区的方法，以宏基站服务的终端实现该方法的角度，参见图3，方法流程包括：The embodiment of the present invention also provides a method for selecting a serving cell. From the perspective of realizing the method by a terminal served by a macro base station, see FIG. 3 , the method flow includes:
301：测量微基站的RSRP，微基站为在宏基站所服务的宏小区内设置的一至多个微基站。301: Measure the RSRP of the micro base station, where the micro base station is one or more micro base stations set in the macro cell served by the macro base station.
302：将测量得到的微基站的RSRP发送给宏基站，使宏基站根据接收到的微基站的RSRP及宏基站服务的终端的上行发射功率确定宏基站服务的终端为相对微基站的强干扰终端，并将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区。302: Send the measured RSRP of the micro base station to the macro base station, so that the macro base station determines that the terminal served by the macro base station is a strong interference terminal relative to the micro base station according to the received RSRP of the micro base station and the uplink transmission power of the terminal served by the macro base station , and switch the uplink communication of the determined strong interference terminal to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as the uplink serving cell of the strong interference terminal.
其中，将测量得到的微基站的RSRP发送给宏基站之后，还包括：Wherein, after sending the measured RSRP of the micro base station to the macro base station, it also includes:
接收宏基站发送的测量消息；receiving a measurement message sent by the macro base station;
根据测量消息测量微基站的RSRP，在微基站中选择RSRP最大的微基站，并将RSRP最大的微基站的小区标识发送给宏基站，使得宏基站根据接收到的RSRP最大的微基站的小区标识将强干扰终端的上行通信切换到RSRP最大的微基站所服务的微小区，以将RSRP最大的微基站所服务的微小区作为强干扰终端上行服务小区。Measure the RSRP of the micro base station according to the measurement message, select the micro base station with the largest RSRP among the micro base stations, and send the cell ID of the micro base station with the largest RSRP to the macro base station, so that the macro base station can use the received cell ID of the micro base station with the largest RSRP The uplink communication of the strong interference terminal is switched to the micro cell served by the micro base station with the largest RSRP, so as to use the micro cell served by the micro base station with the largest RSRP as the uplink serving cell of the strong interference terminal.
综上所述，本发明实施例通过在宏基站服务的终端中确定相对微基站的强干扰终端，并为强干扰终端选择对应的微基站所服务的微小区为上行服务小区，使得距离宏基站较远且距离微基站距离较近的终端具有更好的信道条件，并且降低了该终端的发射功率，减少了功耗；同时该微基站受到的干扰降低，提高了该微基站的服务性能。此外，对于宏小区来说，这些终端距离宏基站较远，对时频资源利用率低，将其切换到微基站之后，宏小区可以有更多的时频资源分配给服务范围内的其他终端，提高了宏小区的服务性能。To sum up, the embodiment of the present invention determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station, and selects the corresponding micro cell served by the micro base station as the uplink serving cell for the strong interference terminal, so that the distance from the macro base station Terminals that are farther away and closer to the micro base station have better channel conditions, and the transmit power of the terminal is reduced to reduce power consumption; at the same time, the interference received by the micro base station is reduced, which improves the service performance of the micro base station. In addition, for the macro cell, these terminals are far away from the macro base station, and the utilization rate of time-frequency resources is low. After switching them to the micro base station, the macro cell can have more time-frequency resources allocated to other terminals within the service range , improving the service performance of the macro cell.
实施例二Embodiment two
针对如图4所示的异构网络，宏小区内分布有微基站1和微基站2，微基站1所服务的微小区1的边缘分布有宏基站服务的终端1、2、3，这些终端与宏基站的距离较远而与微基站的距离较近，在与宏基站进行上行通信时会对微基站形成较大的干扰，造成微小区的服务质量降低。为了解决该问题，结合上述实施例一的内容，本发明实施例提供了一种选择服务小区的方法。参见图5，方法流程包括：For the heterogeneous network shown in Figure 4, there are micro base stations 1 and micro base stations 2 distributed in the macro cell, and terminals 1, 2, and 3 served by the macro base station are distributed on the edge of the micro cell 1 served by the micro base station 1. These terminals The distance to the macro base station is relatively long and the distance to the micro base station is relatively short. When performing uplink communication with the macro base station, it will cause great interference to the micro base station, resulting in a decrease in the service quality of the micro cell. In order to solve this problem, in combination with the content of the first embodiment above, the embodiment of the present invention provides a method for selecting a serving cell. Referring to Figure 5, the method flow includes:
501：宏基站向微基站发送宏基站服务的终端的上行SRS配置信息，使微基站根据上行SRS配置信息测量宏基站服务的终端的SRS，根据SRS测量结果计算微基站受到宏基站服务的终端的干扰水平，并根据干扰水平确定宏基站服务的终端是否为相对微基站的强干扰终端。501: The macro base station sends the uplink SRS configuration information of the terminal served by the macro base station to the micro base station, so that the micro base station measures the SRS of the terminal served by the macro base station according to the uplink SRS configuration information, and calculates the SRS of the terminal served by the macro base station according to the SRS measurement result. interference level, and determine whether the terminal served by the macro base station is a strong interference terminal relative to the micro base station according to the interference level.
其中，宏基站服务的终端的个数可以是一至多个，确定的强干扰终端的个数也可以为一至多个，微基站为在宏基站所服务的宏小区内设置的一至多个微基站，本发明实施例不对宏基站服务的终端的个数、确定的强干扰终端的个数以及微基站的个数进行具体限定，为了便于说明，本实施例及后续实施例中的微基站均代表宏基站所服务的宏小区内的微基站。Wherein, the number of terminals served by the macro base station can be one or more, and the number of determined strong interference terminals can also be one or more, and the micro base station is one or more micro base stations set in the macro cell served by the macro base station , the embodiment of the present invention does not specifically limit the number of terminals served by the macro base station, the number of determined strong interference terminals, and the number of micro base stations. For the convenience of description, the micro base stations in this embodiment and subsequent embodiments all represent The micro base station in the macro cell served by the macro base station.
进一步地，宏基站可以将宏基站服务的所有终端的上行SRS配置信息发送给微基站；可选地，由于与宏基站的距离较远的宏基站服务的终端，相对于其他与宏基站较近的宏基站服务的终端来说，对微小区的干扰强度更大，因而有更大的概率成为微基站的强干扰终端，因此，宏基站也可以仅将与宏基站的距离大于预设距离的宏基站服务的终端的上行SRS配置信息发送给微基站，由此实现通过设定预设距离来筛选需要微基站确定是否为强干扰终端的宏基站服务的终端，从而可以降低微基站针对每个宏基站服务的终端均确定是否为强干扰终端的工作量。其中，预设距离可以根据实际情况选定，例如可选定为1km或2km等，本发明实施例对预设距离的大小不做具体限定。Further, the macro base station can send the uplink SRS configuration information of all terminals served by the macro base station to the micro base station; For the terminal served by the macro base station, the interference intensity to the micro cell is greater, so there is a greater probability of becoming a strong interference terminal of the micro base station. Therefore, the macro base station can also only set the distance to the macro base station The uplink SRS configuration information of the terminal served by the macro base station is sent to the micro base station, so that the terminal that needs the micro base station to determine whether it is the macro base station serving the strong interference terminal can be screened by setting a preset distance, thereby reducing the need for the micro base station to target each terminal. The workload of determining whether the terminals served by the macro base station are strong interference terminals. Wherein, the preset distance may be selected according to actual conditions, for example, 1 km or 2 km may be selected, and the embodiment of the present invention does not specifically limit the size of the preset distance.
具体地，微基站根据SRS测量结果计算微基站受到宏基站服务的终端的干扰水平，并根据干扰水平确定宏基站服务的终端是否为相对微基站的强干扰终端时，微基站将微基站测量得到的宏基站服务的终端的SRS测量结果作为干扰部分，并将微基站根据微基站所服务的终端的上行SRS配置信息测量得到的微基站所服务的终端的SRS测量结果作为传输信号部分，从而计算传输信号部分与干扰和噪声部分的比值，得到信干噪比，该信干噪比为微基站受到宏基站服务的终端的干扰水平；将干扰水平与预先设置的第一预设门限比较，如果干扰水平大于第一预设门限，则微基站确定该宏基站服务的终端为相对微基站的强干扰终端；其中，第一预设门限可以根据实际情况选定，例如可以选定为3dB或5dB等，本发明实施例对第一预设门限的大小不做具体限定。Specifically, the micro base station calculates the interference level of the micro base station by the terminal served by the macro base station according to the SRS measurement results, and determines whether the terminal served by the macro base station is a strong interference terminal relative to the micro base station according to the interference level, the micro base station measures the micro base station to obtain The SRS measurement result of the terminal served by the macro base station is taken as the interference part, and the SRS measurement result of the terminal served by the micro base station measured by the micro base station according to the uplink SRS configuration information of the terminal served by the micro base station is taken as the transmission signal part, thus calculating The ratio of the transmission signal part to the interference and noise part is obtained to obtain the signal-to-interference-noise ratio, which is the interference level of the terminal served by the macro base station to the micro base station; compare the interference level with the preset first preset threshold, if If the interference level is greater than the first preset threshold, the micro base station determines that the terminal served by the macro base station is a strong interference terminal relative to the micro base station; wherein, the first preset threshold can be selected according to the actual situation, for example, it can be selected as 3dB or 5dB etc., the embodiment of the present invention does not specifically limit the size of the first preset threshold.
举例来说，在图4中，终端1、2、3为宏基站服务的终端，微小区1、2位于宏基站所服务的宏小区内，终端1和终端2与宏基站的距离大于预设距离。微基站1接收宏基站发送的终端1和终端2的SRS配置信息，根据接收到的终端1和终端2的上行SRS配置信息分别测量终端1和终端2的SRS，并根据SRS测量结果计算微基站1分别受到终端1和终端2的干扰水平，将计算得到的终端1和终端2的干扰水平分别与第一预设门限比较，如果终端1的干扰水平大于第一预设门限，则确定终端1为相对微基站1的强干扰终端，如果终端2的干扰水平大于第一预设门限，则确定终端2也为相对微基站1的强干扰终端。微基站2确定终端1和终端2是否为相对微基站2的强干扰终端的方法与微基站1相同，在此不再赘述。For example, in Figure 4, terminals 1, 2, and 3 are terminals served by the macro base station, micro cells 1 and 2 are located in the macro cell served by the macro base station, and the distance between terminals 1 and 2 and the macro base station is greater than the preset distance. The micro base station 1 receives the SRS configuration information of terminal 1 and terminal 2 sent by the macro base station, measures the SRS of terminal 1 and terminal 2 respectively according to the received uplink SRS configuration information of terminal 1 and terminal 2, and calculates the micro base station according to the SRS measurement results 1 respectively receive the interference levels of Terminal 1 and Terminal 2, compare the calculated interference levels of Terminal 1 and Terminal 2 with the first preset threshold, and if the interference level of Terminal 1 is greater than the first preset threshold, determine that Terminal 1 If the interference level of the terminal 2 is greater than the first preset threshold, it is determined that the terminal 2 is also a strong interference terminal relative to the micro base station 1. The method for the micro base station 2 to determine whether the terminal 1 and the terminal 2 are strong interference terminals relative to the micro base station 2 is the same as that of the micro base station 1, and will not be repeated here.
502：宏基站接收微基站发送的将微基站确定的强干扰终端进行切换的通知，该通知中携带强干扰终端的标识。502: The macro base station receives a notification sent by the micro base station to handover the strongly interfering terminal determined by the micro base station, and the notification carries an identifier of the strongly interfering terminal.
具体地，微基站通过X2接口将微基站确定的强干扰终端进行切换的通知发送给宏基站，该通知中携带强干扰终端的标识。其中，X2接口是LTE(Long Term Evolution，长期演进)网络中实现eNB(evolved Node B，演进型基站)互连的接口。Specifically, the Femto base station sends a handover notification of the strongly interfering terminal determined by the Femto base station to the Macro base station through the X2 interface, and the notification carries the identity of the strongly interfering terminal. Wherein, the X2 interface is an interface for realizing interconnection of eNBs (evolved Node B, evolved base station) in an LTE (Long Term Evolution, long-term evolution) network.
针对本步骤，如果步骤501中微基站确定的相对微基站的强干扰终端的个数为一个，则该通知中携带该一个强干扰终端的标识，如果步骤501中微基站确定的相对微基站的强干扰终端的个数为多个，则该通知中携带多个相应的强干扰终端的标识。For this step, if the number of strong interfering terminals determined by the micro base station relative to the micro base station in step 501 is one, the notification carries the identity of the strong interfering terminal; If there are multiple strong interfering terminals, the notification carries identifiers of multiple corresponding strong interfering terminals.
举例来说，在图4中，如果微基站1确定强干扰终端为终端1，则宏基站接收到的微基站1发送的通知中仅携带了该强干扰终端1的标识；如果微基站1确定的强干扰终端为终端1和终端2，则宏基站接收到的微基站1发送的通知中携带了强干扰终端1和终端2的标识。For example, in FIG. 4, if the micro base station 1 determines that the strong interfering terminal is terminal 1, the notification sent by the micro base station 1 received by the macro base station only carries the identity of the strong interfering terminal 1; if the micro base station 1 determines The strong interference terminals are terminal 1 and terminal 2, and the notification sent by the micro base station 1 received by the macro base station carries the identifiers of the strong interference terminal 1 and terminal 2.
503：宏基站根据通知中携带的强干扰终端的标识确定相对微基站的强干扰终端。503: The macro base station determines the strong interference terminal relative to the micro base station according to the identifier of the strong interference terminal carried in the notification.
需要说明的是，如果上述步骤501中的微基站的个数为多个，则多个微基站中的每个微基站在接收到宏基站发送的宏基站服务的终端的上行SRS配置信息后，均需要分别执行确定宏基站服务的终端是否为相对该微基站的强干扰终端的过程，则宏基站在该步骤接收到的通知可以为多个微基站发送的通知，根据每个通知中携带的强干扰终端的标识分别确定相对各个微基站的强干扰终端。It should be noted that, if there are multiple micro base stations in the above step 501, each of the multiple micro base stations receives the uplink SRS configuration information of the terminal served by the macro base station sent by the macro base station, Both need to perform the process of determining whether the terminal served by the macro base station is a strong interference terminal relative to the micro base station, then the notification received by the macro base station in this step can be a notification sent by multiple micro base stations, according to the information carried in each notification The identifiers of the strong interference terminals respectively determine the strong interference terminals relative to each micro base station.
举例来说，在图4中，宏基站接收到微基站1和微基站2发送的通知后，根据微基站1发送的通知中携带的强干扰终端1和终端2的标识确定终端1和2为相对微基站1的强干扰终端；根据微基站2发送的通知中携带的强干扰终端1和终端2的标识确定终端1和终端2为相对微基站2的强干扰终端。For example, in FIG. 4 , after the macro base station receives the notification sent by the micro base station 1 and the micro base station 2, it determines that the terminals 1 and 2 are Relative to the strong interference terminal of the micro base station 1; according to the identifiers of the strong interference terminal 1 and the terminal 2 carried in the notification sent by the micro base station 2, it is determined that the terminal 1 and the terminal 2 are strong interference terminals relative to the micro base station 2.
504：宏基站将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区。504: The macro base station switches the uplink communication of the determined strong interference terminal to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as the uplink serving cell of the strong interference terminal.
具体地，宏基站将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区可以包括但不限于以下两种方法：Specifically, the macro base station switches the uplink communication of the determined strong interference terminal to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as the uplink serving cell of the strong interference terminal, which may include but not limited to The following two methods:
方法一：宏基站在微基站中选择受强干扰终端干扰最大的微基站，将强干扰终端的上行通信切换到受强干扰终端干扰最大的微基站所服务的微小区，以将受强干扰终端干扰最大的微基站所服务的微小区作为强干扰终端的上行服务小区。Method 1: The macro base station selects the micro base station that is most interfered by the strong interference terminal among the micro base stations, and switches the uplink communication of the strong interference terminal to the micro cell served by the micro base station that is most interfered by the strong interference terminal, so that the strong interference terminal The micro cell served by the micro base station with the greatest interference serves as the uplink serving cell of the strongly interfering terminal.
针对本方法，宏基站在微基站中选择受强干扰终端干扰最大的微基站时，如果强干扰终端为相对一个微基站的强干扰终端，则宏基站确定该一个微基站为受强干扰终端的干扰最大的微基站；如果强干扰终端为相对多个微基站的强干扰终端，则宏基站确定各个微基站受到强干扰终端的干扰大小，从多个微基站中选择受强干扰终端干扰最大的微基站。For this method, when the macro base station selects the micro base station that is most interfered by the strong interference terminal among the micro base stations, if the strong interference terminal is a strong interference terminal relative to a micro base station, then the macro base station determines that the micro base station is a strong interference terminal. The micro base station with the largest interference; if the strong interference terminal is a strong interference terminal relative to multiple micro base stations, the macro base station determines the interference level of each micro base station by the strong interference terminal, and selects the most interfered by the strong interference terminal from multiple micro base stations micro base station.
具体地，宏基站在微基站中选择受强干扰终端干扰最大的微基站时，可以根据每个微基站测量的强干扰终端的干扰水平来选择，例如，从各个微基站根据SRS测量结果计算得到的强干扰终端的干扰水平中选择干扰水平最大的微基站作为宏基站最终确定将强干扰终端切换到的微基站，该微基站测量的强干扰终端的干扰水平可以携带在步骤502中微基站发送的将确定的强干扰终端进行切换的通知中，从而宏基站接收到该通知后，可根据该通知中携带的强干扰终端的干扰水平，从而在微基站中选择受强干扰终端干扰最大的微基站。除此之外，还有其他在微基站中选择受强干扰终端干扰最大的微基站的方法，例如，宏基站可向强干扰终端发送触发测量微基站的RSRP的消息，由该强干扰终端对各个微基站的RSRP进行测量，并将测量得到的RSRP返回给宏基站，使宏基站根据该强干扰终端测量得到的RSRP和该强干扰终端的发射功率，确定微基站受到强干扰终端的干扰大小，从而在微基站中选择受强干扰终端干扰最大的微基站。具体采用哪种选择微基站的方式，本发明实施例对此不做具体限定。Specifically, when the macro base station selects the micro base station that is most interfered by the strong interfering terminal among the micro base stations, it can be selected according to the interference level of the strong interfering terminal measured by each micro base station, for example, calculated from each micro base station according to the SRS measurement result In the interference level of the strong interfering terminal, select the micro base station with the highest interference level as the macro base station to finally determine the micro base station to which the strong interfering terminal is handed over. The interference level of the strong interfering terminal measured by the micro base station can be carried in step 502 and sent by the micro base station In the notification of switching the determined strong interfering terminal, after receiving the notification, the macro base station can select the micro base station that is most interfered by the strong interfering terminal in the micro base station according to the interference level of the strong interfering terminal carried in the notification. base station. In addition, there are other methods of selecting the micro base station that is most interfered by the strong interference terminal in the micro base station. For example, the macro base station can send a message to the strong interference terminal to trigger the measurement of the RSRP of the micro base station, and the strong interference terminal The RSRP of each micro base station is measured, and the measured RSRP is returned to the macro base station, so that the macro base station can determine the interference degree of the micro base station by the strong interference terminal according to the RSRP measured by the strong interference terminal and the transmit power of the strong interference terminal , so that among the micro base stations, the micro base station that is most interfered by the strong interfering terminal is selected. The specific manner of selecting the micro base station is not specifically limited in this embodiment of the present invention.
举例来说，在图4中，如果强干扰终端1仅是微基站1的强干扰终端，则宏基站确定微基站1受强干扰终端1的干扰最大，将强干扰终端1的上行通信切换到微基站1所服务的微小区1，以将微基站1所服务的微小区1作为强干扰终端1的上行服务小区。如果强干扰终端1既是微基站1的强干扰终端，同时又是微基站2的强干扰终端，宏基站可以从步骤502中获得的微基站1发送的通知中携带的强干扰终端1的干扰水平和微基站2发送的通知中携带的强干扰终端1的干扰水平，如果微基站2发送的通知中携带的强干扰终端1的干扰水平大于微基站1发送的通知中携带的强干扰终端1的干扰水平，则宏基站将强干扰终端1的上行通信切换到微基站2所服务的微小区2，以将该受强干扰终端1干扰最大的微基站2所服务的微小区2作为强干扰终端1的上行服务的小区。For example, in FIG. 4, if the strong interference terminal 1 is only a strong interference terminal of the micro base station 1, the macro base station determines that the micro base station 1 is most interfered by the strong interference terminal 1, and switches the uplink communication of the strong interference terminal 1 to The micro cell 1 served by the micro base station 1 is used as the uplink serving cell of the strong interference terminal 1 . If the strong interference terminal 1 is both the strong interference terminal of the micro base station 1 and the strong interference terminal of the micro base station 2, the macro base station can obtain the interference level of the strong interference terminal 1 carried in the notification sent by the micro base station 1 obtained in step 502 and the interference level of the strong interfering terminal 1 carried in the notification sent by the micro base station 2, if the interference level of the strong interfering terminal 1 carried in the notification sent by the small base station 2 is greater than the interference level of the strong interfering terminal 1 carried in the notification sent by the small base station 1 interference level, the macro base station will switch the uplink communication of the strong interference terminal 1 to the micro cell 2 served by the micro base station 2, so as to use the micro cell 2 served by the micro base station 2 that is most interfered by the strong interference terminal 1 as the strong interference terminal 1's uplink serving cell.
可选地，宏基站除了按照上述方式在微基站中选择受强干扰终端干扰最大的微基站之外，还可以有其他方法为确定的强干扰终端选择微基站，从而将强干扰终端的上行通信切换到该微基站所服务的微小区，例如，宏基站还可以在确定的强干扰终端对应的微基站中随机选择一个微基站，从而将该强干扰终端的上行通信切换到该微基站所服务的微小区。对于具体选用哪种方法来为强干扰终端选择微基站，从而将强干扰终端的上行通信切换到该选择的微基站所服务的微小区，本发明实施例对此不做具体限定。Optionally, in addition to selecting the micro base station that is most interfered by the strong interference terminal in the micro base station according to the above method, the macro base station can also have other methods to select the micro base station for the determined strong interference terminal, so that the uplink communication of the strong interference terminal Handover to the micro cell served by the micro base station, for example, the macro base station can also randomly select a micro base station from the micro base stations corresponding to the determined strong interference terminal, so as to switch the uplink communication of the strong interference terminal to the service of the micro base station micro-zone. The embodiment of the present invention does not specifically limit which method is selected to select the micro base station for the strong interference terminal, so as to switch the uplink communication of the strong interference terminal to the micro cell served by the selected micro base station.
方法二：宏基站发送测量消息给强干扰终端，使得强干扰终端测量微基站的RSRP，并在微基站中选择RSRP最大的微基站，将RSRP最大的微基站的小区标识发送给宏基站；宏基站接收强干扰终端发送的RSRP最大的微基站的小区标识，根据RSRP最大的微基站的小区标识将强干扰终端的上行通信切换到RSRP最大的微基站所服务的微小区，以将该RSRP最大的微基站所服务的微小区作为强干扰终端的上行服务小区。Method 2: The macro base station sends a measurement message to the strong interference terminal, so that the strong interference terminal measures the RSRP of the micro base station, and selects the micro base station with the largest RSRP among the micro base stations, and sends the cell identity of the micro base station with the largest RSRP to the macro base station; the macro base station The station receives the cell ID of the micro base station with the largest RSRP sent by the strong interference terminal, and switches the uplink communication of the strong interference terminal to the micro cell served by the micro base station with the largest RSRP according to the cell ID of the micro base station with the largest RSRP, so as to maximize the RSRP The micro cell served by the micro base station is used as the uplink serving cell of the strongly interfering terminal.
一般来说，方法一中受到强干扰终端的干扰最大的微基站也是方法二中RSRP最大的微基站。Generally speaking, the micro base station that receives the greatest interference from the strong interfering terminal in the method 1 is also the micro base station with the largest RSRP in the method 2.
针对本方法，强干扰终端测量微基站的RSRP，并在微基站中选择RSRP最大的微基站时，如果强干扰终端为相对一个微基站的强干扰终端，则强干扰终端测量该一个微基站的RSRP，并选择该一个微基站为RSRP最大的微基站；如果强干扰终端为相对多个微基站的强干扰终端时，则强干扰终端测量多个微基站的RSRP，并在多个微基站中选择RSRP最大的微基站。For this method, when the strong interference terminal measures the RSRP of the micro base station and selects the micro base station with the largest RSRP among the micro base stations, if the strong interference terminal is a strong interference terminal relative to a micro base station, the strong interference terminal measures the RSRP of the micro base station. RSRP, and select the micro base station as the micro base station with the largest RSRP; if the strong interference terminal is a strong interference terminal relative to multiple micro base stations, the strong interference terminal measures the RSRP of multiple micro base stations, and in multiple micro base stations Select the micro base station with the largest RSRP.
举例来说，在图4中，如果强干扰终端1仅是微基站1的强干扰终端，宏基站发送测量消息给强干扰终端1，使得强干扰终端1测量微基站1的RSRP，确定微基站1的RSRP为最大，将该RSRP最大的微基站1的小区标识发送给宏基站；宏基站接收到强干扰终端1发送的RSRP最大的微基站1的小区标识后，将强干扰终端1的上行通信切换到微基站1所服务的微小区1，以将该RSRP最大的微基站1所服务的微小区1作为强干扰终端1的上行服务小区。如果强干扰终端1既是微基站1的强干扰终端，同时又是微基站2的强干扰终端，宏基站发送测量消息给强干扰终端1，使得强干扰终端1分别测量微基站1和微基站2的RSRP，如果强干扰终端1测量到的微基站2的RSRP大于微基站1的RSRP，则强干扰终端1将RSRP最大的微基站2的小区标识发送给宏基站；宏基站接收到强干扰终端1发送的RSRP最大的微基站2的小区标识后，将上行通信切换到微基站2所服务的微小区2，以将该RSRP最大的微基站2所服务的微小区2作为强干扰终端1的上行服务小区。For example, in FIG. 4, if the strong interference terminal 1 is only a strong interference terminal of the micro base station 1, the macro base station sends a measurement message to the strong interference terminal 1, so that the strong interference terminal 1 measures the RSRP of the micro base station 1, and determines that the micro base station The RSRP of 1 is the largest, and the cell ID of the micro base station 1 with the largest RSRP is sent to the macro base station; The communication is handed over to the micro cell 1 served by the micro base station 1 , so that the micro cell 1 served by the micro base station 1 with the largest RSRP is used as the uplink serving cell of the strongly interfering terminal 1 . If the strong interference terminal 1 is both the strong interference terminal of the small base station 1 and the strong interference terminal of the small base station 2, the macro base station sends a measurement message to the strong interference terminal 1, so that the strong interference terminal 1 measures the small base station 1 and the small base station 2 respectively. If the RSRP of the micro base station 2 measured by the strong interference terminal 1 is greater than the RSRP of the micro base station 1, the strong interference terminal 1 sends the cell identity of the micro base station 2 with the largest RSRP to the macro base station; the macro base station receives the RSRP of the strong interference terminal 1 sends the cell identity of the micro base station 2 with the largest RSRP, then switches the uplink communication to the micro cell 2 served by the micro base station 2, so as to use the micro cell 2 served by the micro base station 2 with the largest RSRP as the target of the strongly interfering terminal 1 Uplink serving cell.
综上所述，本发明实施例通过在宏基站服务的终端中确定相对微基站的强干扰终端，并为强干扰终端选择对应的微基站所服务的微小区为上行服务小区，使得距离宏基站较远且距离微基站距离较近的终端具有更好的信道条件，并且降低了该终端的发射功率，减少了功耗；同时该微基站受到的干扰降低，提高了该微基站的服务性能。此外，对于宏小区来说，这些终端距离宏基站较远，对时频资源利用率低，将其切换到微基站之后，宏小区可以有更多的时频资源分配给服务范围内的其他终端，提高了宏小区的服务性能。To sum up, the embodiment of the present invention determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station, and selects the corresponding micro cell served by the micro base station as the uplink serving cell for the strong interference terminal, so that the distance from the macro base station Terminals that are farther away and closer to the micro base station have better channel conditions, and the transmit power of the terminal is reduced to reduce power consumption; at the same time, the interference received by the micro base station is reduced, which improves the service performance of the micro base station. In addition, for the macro cell, these terminals are far away from the macro base station, and the utilization rate of time-frequency resources is low. After switching them to the micro base station, the macro cell can have more time-frequency resources allocated to other terminals within the service range , improving the service performance of the macro cell.
实施例三Embodiment three
针对如图4所示的异构网络，宏小区内分布有微基站1和微基站2，微基站1所服务的微小区1的边缘分布有宏基站服务的终端1、2、3，这些终端与宏基站的距离较远而与微基站的距离较近，在与宏基站进行上行通信时会对微基站形成较大的干扰，造成微小区的服务质量降低。为了解决该问题，结合上述实施例一的内容，本发明实施例提供了一种选择服务小区的方法。参见图6，方法流程包括：For the heterogeneous network shown in Figure 4, there are micro base stations 1 and micro base stations 2 distributed in the macro cell, and terminals 1, 2, and 3 served by the macro base station are distributed on the edge of the micro cell 1 served by the micro base station 1. These terminals The distance to the macro base station is relatively long and the distance to the micro base station is relatively short. When performing uplink communication with the macro base station, it will cause great interference to the micro base station, resulting in a decrease in the service quality of the micro cell. In order to solve this problem, in combination with the content of the first embodiment above, the embodiment of the present invention provides a method for selecting a serving cell. Referring to Figure 6, the method flow includes:
601：宏基站接收宏基站服务的终端发送的宏基站服务的终端测量得到的微基站的RSRP。601: The macro base station receives the RSRP of the micro base station measured by the terminal served by the macro base station and sent by the terminal served by the macro base station.
其中，宏基站服务的终端的个数可以是一至多个，微基站为在宏基站所服务的宏小区内设置的一至多个微基站，本发明实施例不对宏基站服务的终端的个数以及微基站的个数进行具体限定，为了便于说明，本实施例及后续实施例中的微基站均代表宏基站所服务的宏小区内的微基站。The number of terminals served by the macro base station can be one or more, and the micro base station is one or more micro base stations set up in the macro cell served by the macro base station. The embodiment of the present invention does not determine the number of terminals served by the macro base station and The number of micro base stations is specifically limited. For ease of description, the micro base stations in this embodiment and subsequent embodiments all represent micro base stations in a macro cell served by a macro base station.
进一步地，宏基站接收宏基站服务的终端发送的宏基站服务的终端测量得到的微基站的RSRP可以为宏基站服务的所有终端测量得到的微基站的RSRP；可选地，由于与宏基站的距离较远的宏基站服务的终端，相对于其他与宏基站较近的宏基站服务的终端来说，对微小区的干扰强度更大，因而有更大的概率成为微基站的强干扰终端，因此，宏基站接收宏基站服务的终端发送的宏基站服务的终端测量得到的微基站的RSRP也可以为与宏基站的距离大于预设距离的宏基站服务的终端测量的微基站的RSRP，由此实现通过设定预设距离来筛选需要上报测量得到的微基站的RSRP的宏基站服务的终端。其中，预设距离可以根据实际情况选定，例如可选定为1km或2km等，本发明实施例对预设距离的大小不做具体限定。Further, the RSRP of the micro base station measured by the terminal served by the macro base station received by the macro base station from the terminal served by the macro base station may be the RSRP of the micro base station measured by all terminals served by the macro base station; Compared with terminals served by other macro base stations that are closer to the macro base station, the terminal served by the macro base station with a greater distance has greater interference intensity to the micro cell, so there is a greater probability of becoming a strong interference terminal of the micro base station. Therefore, the RSRP of the micro base station measured by the terminal served by the macro base station received by the macro base station from the terminal served by the macro base station may also be the RSRP of the micro base station measured by the terminal served by the macro base station whose distance from the macro base station is greater than the preset distance, by This implementation screens the terminals served by the macro base station that need to report the measured RSRP of the micro base station by setting a preset distance. Wherein, the preset distance may be selected according to actual conditions, for example, 1 km or 2 km may be selected, and the embodiment of the present invention does not specifically limit the size of the preset distance.
需要说明的是，触发宏基站服务的终端测量微基站的RSRP的方式包括但不限于宏基站向其服务的终端发送触发测量的消息，除此之外，还可以有其他触发方式，例如，由终端按照预设周期自动触发测量操作，具体采用哪种触发方式，本实施例对此不做具体限定。It should be noted that the method of triggering the terminal served by the macro base station to measure the RSRP of the micro base station includes but is not limited to the macro base station sending a message triggering the measurement to the terminal served by the macro base station. In addition, there may be other triggering methods, for example, by The terminal automatically triggers the measurement operation according to a preset period, and the specific trigger mode is not specifically limited in this embodiment.
举例来说，在图4中，终端1、2、3为宏基站服务的终端，微小区1和微小区2位于宏基站所服务的宏小区内，终端1和终端2与宏基站的距离大于预设距离，因此，终端1接收到宏基站发送的触发测量的消息后，分别测量得到微基站1的RSRP和微基站2的RSRP，并将测量得到的微基站1的RSRP和微基站2的RSRP发送给宏基站，宏基站获取到终端1测量得到的微基站1的RSRP和微基站2的RSRP。宏基站获得终端2测量得到的微基站1的RSRP和微基站2的RSRP的方法与上述方法相同，在此不再赘述。For example, in Figure 4, terminals 1, 2, and 3 are terminals served by the macro base station, micro cell 1 and micro cell 2 are located in the macro cell served by the macro base station, and the distance between terminal 1 and terminal 2 and the macro base station is greater than The preset distance, therefore, after receiving the trigger measurement message sent by the macro base station, the terminal 1 measures the RSRP of the micro base station 1 and the RSRP of the micro base station 2 respectively, and compares the measured RSRP of the micro base station 1 and the RSRP of the micro base station 2 The RSRP is sent to the macro base station, and the macro base station obtains the RSRP of the micro base station 1 and the RSRP of the micro base station 2 measured by the terminal 1 . The method for the macro base station to obtain the RSRP of the micro base station 1 and the RSRP of the micro base station 2 measured by the terminal 2 is the same as the above method, and will not be repeated here.
602：宏基站根据宏基站服务的终端发送的微基站的RSRP和宏基站服务的终端的上行发射功率在宏基站服务的终端中确定相对微基站的强干扰终端。602: The macro base station determines, among the terminals served by the macro base station, a terminal with strong interference with respect to the micro base station according to the RSRP of the micro base station sent by the terminal served by the macro base station and the uplink transmit power of the terminal served by the macro base station.
其中，确定的强干扰终端的个数可以为一至多个，本发明实施例不对确定的强干扰终端的个数进行具体限定。The number of determined strong interference terminals may be one or more, and the embodiment of the present invention does not specifically limit the number of determined strong interference terminals.
针对本步骤，宏基站服务的终端的上行发射功率是宏基站根据宏基站服务的终端的上行发射功率余量以及上行发射功率最大值计算得到的，其中，宏基站服务的终端的上行发射功率余量可以是宏基站服务的终端将自身的上行发射功率余量发送给宏基站的，宏基站服务的终端的上行发射功率的最大值可以是宏基站已知的，除此之外，宏基站还可以通过其他方式获取宏基站服务的终端的上行发射功率余量及上行发射功率最大值，本发明实施例在此不进行具体限定。For this step, the uplink transmit power of the terminal served by the macro base station is calculated by the macro base station according to the uplink transmit power headroom and the maximum value of the uplink transmit power of the terminal served by the macro base station, wherein the uplink transmit power headroom of the terminal served by the macro base station The amount can be that the terminal served by the macro base station sends its own uplink transmit power headroom to the macro base station. The maximum uplink transmit power of the terminal served by the macro base station can be known by the macro base station. In addition, the macro base station also The uplink transmit power headroom and the maximum uplink transmit power of the terminal served by the macro base station may be obtained in other ways, which are not specifically limited in this embodiment of the present invention.
具体地，宏基站根据宏基站服务的终端发送的微基站的RSRP和宏基站服务的终端的上行发射功率在宏基站服务的终端中确定相对微基站的强干扰终端时，宏基站将宏基站服务的终端发送的微基站的RSRP与预先设置的第二预设门限比较，将宏基站服务的终端的上行发射功率与预先设置的第三预设门限比较，如果宏基站服务的终端发送的RSRP大于第二预设门限，且宏基站服务的终端的上行发射功率大于第三预设门限，则确定该宏基站服务的终端为相对微基站的强干扰终端。其中，第二预设门限和第三预设门限的大小都可以根据实际情况设定，例如，第二门限可以是3dBm或5dBm，第三预设门限可以是5dBm或10dBm等，本发明实施例对第二预设门限和第三预设门限的大小不做具体限定。Specifically, when the macro base station determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station according to the RSRP of the micro base station sent by the terminal served by the macro base station and the uplink transmit power of the terminal served by the macro base station, the macro base station will serve the macro base station Compare the RSRP of the micro base station sent by the terminal of the micro base station with the preset second preset threshold, and compare the uplink transmit power of the terminal served by the macro base station with the preset third preset threshold, if the RSRP sent by the terminal served by the macro base station is greater than The second preset threshold, and the uplink transmit power of the terminal served by the macro base station is greater than the third preset threshold, then it is determined that the terminal served by the macro base station is a strong interference terminal relative to the micro base station. Wherein, the size of the second preset threshold and the third preset threshold can be set according to the actual situation, for example, the second threshold can be 3dBm or 5dBm, the third preset threshold can be 5dBm or 10dBm, etc., the embodiment of the present invention The sizes of the second preset threshold and the third preset threshold are not specifically limited.
举例来说，在图4中，宏基站接收终端1发送的终端1测量的微基站1的RSRP和微基站2的RSRP，还接收到终端1发送的终端1的上行发射功率余量，宏基站将终端1测量到的微基站1的RSRP与第二预设门限比较，并且，根据终端1的上行发射功率余量以及上行发射功率最大值计算得到终端1的上行发射功率，将终端1的上行发射功率与第三预设门限比较，如果终端1测量到的微基站1的RSRP大于第二预设门限且终端1的上行发射功率大于第三预设门限，则确定该终端1为相对微基站1的强干扰终端；宏基站还将终端1测量到的微基站2的RSRP与第二预设门限比较，并且将终端1的上行发射功率与第三预设门限比较，如果终端1测量到的微基站2的RSRP大于第二预设门限且终端1的上行发射功率大于第三预设门限，则确定终端1为相对微基站2的强干扰终端。相应地，宏基站确定终端2是否为微基站1和微基站2的强干扰终端的方法与确定终端1的方法相同，在此不再赘述。For example, in FIG. 4 , the macro base station receives the RSRP of the micro base station 1 measured by the terminal 1 and the RSRP of the micro base station 2 sent by the terminal 1, and also receives the uplink transmit power headroom of the terminal 1 sent by the terminal 1, and the macro base station Comparing the RSRP of the micro base station 1 measured by the terminal 1 with the second preset threshold, and calculating the uplink transmit power of the terminal 1 according to the uplink transmit power headroom of the terminal 1 and the maximum value of the uplink transmit power, and calculating the uplink transmit power of the terminal 1 The transmit power is compared with the third preset threshold, and if the RSRP of the micro base station 1 measured by the terminal 1 is greater than the second preset threshold and the uplink transmit power of the terminal 1 is greater than the third preset threshold, then it is determined that the terminal 1 is the relative micro base station 1 strong interference terminal; the macro base station also compares the RSRP of the micro base station 2 measured by the terminal 1 with the second preset threshold, and compares the uplink transmit power of the terminal 1 with the third preset threshold, if the measured RSRP of the terminal 1 If the RSRP of the micro base station 2 is greater than the second preset threshold and the uplink transmission power of the terminal 1 is greater than the third preset threshold, it is determined that the terminal 1 is a strong interference terminal relative to the micro base station 2 . Correspondingly, the method for the macro base station to determine whether the terminal 2 is a strong interference terminal between the micro base station 1 and the micro base station 2 is the same as the method for determining the terminal 1, and will not be repeated here.
603：宏基站将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区。603: The macro base station switches the uplink communication of the determined strong interference terminal to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as the uplink serving cell of the strong interference terminal.
该步骤的具体实现方式与上述实施例二中步骤504的实现方式相同，具体参见上述实施例二中的步骤504，此处不再赘述。The specific implementation manner of this step is the same as the implementation manner of step 504 in the above-mentioned embodiment 2. For details, refer to the step 504 in the above-mentioned embodiment 2, which will not be repeated here.
综上所述，本发明实施例通过在宏基站服务的终端中确定相对微基站的强干扰终端，并为强干扰终端选择对应的微基站所服务的微小区为上行服务小区，使得距离宏基站较远且距离微基站距离较近的终端具有更好的信道条件，并且降低了该终端的发射功率，减少了功耗；同时该微基站受到的干扰降低，提高了该微基站的服务性能。此外，对于宏小区来说，这些终端距离宏基站较远，对时频资源利用率低，将其切换到微基站之后，宏小区可以有更多的时频资源分配给服务范围内的其他终端，提高了宏小区的服务性能。To sum up, the embodiment of the present invention determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station, and selects the corresponding micro cell served by the micro base station as the uplink serving cell for the strong interference terminal, so that the distance from the macro base station Terminals that are farther away and closer to the micro base station have better channel conditions, and the transmit power of the terminal is reduced to reduce power consumption; at the same time, the interference received by the micro base station is reduced, which improves the service performance of the micro base station. In addition, for the macro cell, these terminals are far away from the macro base station, and the utilization rate of time-frequency resources is low. After switching them to the micro base station, the macro cell can have more time-frequency resources allocated to other terminals within the service range , improving the service performance of the macro cell.
实施例四Embodiment four
本发明实施例提供了一种宏基站，用于执行上述实施例一或实施例二或实施例三中宏基站所执行的方法。参见图7，该宏基站包括：An embodiment of the present invention provides a macro base station, which is configured to execute the method performed by the macro base station in the first embodiment, the second embodiment, or the third embodiment. Referring to Figure 7, the macro base station includes:
确定模块701，用于在宏基站服务的终端中确定相对微基站的强干扰终端，微基站为在宏基站所服务的宏小区内设置的一至多个微基站；The determining module 701 is configured to determine, among the terminals served by the macro base station, terminals with strong interference relative to the micro base station, where the micro base station is one or more micro base stations set in the macro cell served by the macro base station;
选择模块702，用于将确定模块701确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区。The selection module 702 is configured to switch the uplink communication of the strong interference terminal determined by the determination module 701 to the micro cell served by the corresponding micro base station, so as to use the micro cell served by the corresponding micro base station as the uplink serving cell of the strong interference terminal.
具体地，确定模块701，具体用于将宏基站服务的终端的上行SRS配置信息发送给微基站，使得微基站根据上行SRS配置信息测量宏基站服务的终端的SRS，根据SRS测量结果计算微基站受到宏基站服务的终端的干扰水平，并根据干扰水平确定宏基站服务的终端为相对微基站的强干扰终端后，向宏基站发送将确定的强干扰终端进行切换的通知，通知中携带强干扰终端的标识；接收微基站返回的将微基站确定的强干扰终端进行切换的通知，根据通知中携带的强干扰终端的标识确定相对微基站的强干扰终端。Specifically, the determination module 701 is specifically configured to send the uplink SRS configuration information of the terminal served by the macro base station to the micro base station, so that the micro base station measures the SRS of the terminal served by the macro base station according to the uplink SRS configuration information, and calculates the SRS of the terminal served by the macro base station according to the SRS measurement result. After receiving the interference level of the terminal served by the macro base station, and determining that the terminal served by the macro base station is a strong interference terminal relative to the micro base station according to the interference level, it sends a notification to the macro base station to switch the determined strong interference terminal, and the notification carries strong interference Identification of the terminal: receiving the notification returned by the micro base station to switch the strong interference terminal determined by the small base station, and determining the strong interference terminal relative to the small base station according to the identification of the strong interference terminal carried in the notification.
具体地，确定模块701，具体用于接收宏基站服务的终端发送的宏基站服务的终端测量得到的微基站的RSRP；根据接收到的宏基站服务的终端发送的微基站的RSRP及宏基站服务的终端的上行发射功率在宏基站服务的终端中确定相对微基站的强干扰终端。Specifically, the determination module 701 is specifically configured to receive the RSRP of the micro base station measured by the terminal served by the macro base station and measured by the terminal served by the macro base station; The uplink transmission power of the terminal determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station.
具体地，选择模块702，具体用于在微基站中选择受确定模块701确定的强干扰终端干扰最大的微基站，将强干扰终端的上行通信切换到受强干扰终端干扰最大的微基站所服务的微小区，以将受强干扰终端干扰最大的微基站所服务的微小区作为强干扰终端的上行服务小区。Specifically, the selection module 702 is specifically configured to select the micro base station that is most interfered by the strong interference terminal determined by the determination module 701, and switch the uplink communication of the strong interference terminal to the service of the micro base station that is most interfered by the strong interference terminal The micro cell, the micro cell served by the micro base station which is most interfered by the strong interference terminal is used as the uplink serving cell of the strong interference terminal.
具体地，选择模块702，具体用于发送测量消息给强干扰终端，使得确定模块701确定的强干扰终端测量微基站的RSRP，并在微基站中选择RSRP最大的微基站，将RSRP最大的微基站的小区标识发送给选择模块；接收强干扰终端发送的RSRP最大的微基站的小区标识，根据RSRP最大的微基站的小区标识将强干扰终端的上行通信切换到RSRP最大的微基站所服务的微小区，以将RSRP最大的微基站所服务的微小区作为强干扰终端的上行服务小区。Specifically, the selection module 702 is specifically configured to send a measurement message to the strong interference terminal, so that the strong interference terminal determined by the determination module 701 measures the RSRP of the micro base station, and selects the micro base station with the largest RSRP among the micro base stations, and sets the micro base station with the largest RSRP The cell identity of the base station is sent to the selection module; the cell identity of the micro base station with the largest RSRP sent by the strong interference terminal is received, and the uplink communication of the strong interference terminal is switched to the micro base station served by the micro base station with the largest RSRP according to the cell identity of the micro base station with the largest RSRP The micro cell is to use the micro cell served by the micro base station with the largest RSRP as the uplink serving cell of the strong interference terminal.
综上所述，本发明实施例通过在宏基站服务的终端中确定相对微基站的强干扰终端，并为强干扰终端选择对应的微基站所服务的微小区为上行服务小区，使得距离宏基站较远且距离微基站距离较近的终端具有更好的信道条件，并且降低了该终端的发射功率，减少了功耗；同时该微基站受到的干扰降低，提高了该微基站的服务性能。此外，对于宏小区来说，这些终端距离宏基站较远，对时频资源利用率低，将其切换到微基站之后，宏小区可以有更多的时频资源分配给服务范围内的其他终端，提高了宏小区的服务性能。To sum up, the embodiment of the present invention determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station, and selects the corresponding micro cell served by the micro base station as the uplink serving cell for the strong interference terminal, so that the distance from the macro base station Terminals that are farther away and closer to the micro base station have better channel conditions, and the transmit power of the terminal is reduced to reduce power consumption; at the same time, the interference received by the micro base station is reduced, which improves the service performance of the micro base station. In addition, for the macro cell, these terminals are far away from the macro base station, and the utilization rate of time-frequency resources is low. After switching them to the micro base station, the macro cell can have more time-frequency resources allocated to other terminals within the service range , improving the service performance of the macro cell.
实施例五Embodiment five
本发明实施例提供了一种微基站，用于执行实施例一或实施例二或实施例三中微基站所执行的方法。参见图8，该微基站包括：An embodiment of the present invention provides a micro base station, which is used to implement the method performed by the micro base station in the first embodiment, the second embodiment, or the third embodiment. Referring to Figure 8, the micro base station includes:
确定模块801，用于在宏基站服务的终端中确定相对微基站的强干扰终端，微基站为在宏基站所服务的宏小区内设置的微基站；The determination module 801 is configured to determine, among the terminals served by the macro base station, a terminal with strong interference relative to the micro base station, where the micro base station is a micro base station set in a macro cell served by the macro base station;
发送模块802，用于向宏基站发送将确定模块801确定的强干扰终端进行切换的通知，通知中携带强干扰终端的标识，使宏基站根据通知中携带的强干扰终端的标识确定相对微基站的强干扰终端后，将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区。The sending module 802 is configured to send a notification to the macro base station that the strong interference terminal determined by the determination module 801 is to be handed over. After the strong interfering terminal is detected, the uplink communication of the determined strong interfering terminal is switched to the micro cell served by the corresponding micro base station, so that the micro cell served by the corresponding micro base station is used as the uplink serving cell of the strong interfering terminal.
具体地，确定模块801，具体用于接收宏基站发送的宏基站服务的终端的上行SRS配置信息；根据上行SRS配置信息测量宏基站服务的终端的SRS，根据SRS测量结果计算微基站受到宏基站服务的终端的干扰水平，并根据干扰水平在宏基站服务的终端中确定相对微基站的强干扰终端。Specifically, the determining module 801 is specifically configured to receive the uplink SRS configuration information of the terminal served by the macro base station sent by the macro base station; measure the SRS of the terminal served by the macro base station according to the uplink SRS configuration information, and calculate the SRS received by the micro base station from the macro base station according to the SRS measurement result. The interference level of the terminal served by the macro base station is determined according to the interference level, and the strong interference terminal relative to the micro base station is determined among the terminals served by the macro base station.
综上所述，本发明实施例通过在宏基站服务的终端中确定相对微基站的强干扰终端，并为强干扰终端选择对应的微基站所服务的微小区为上行服务小区，使得距离宏基站较远且距离微基站距离较近的终端具有更好的信道条件，并且降低了该终端的发射功率，减少了功耗；同时该微基站受到的干扰降低，提高了该微基站的服务性能。此外，对于宏小区来说，这些终端距离宏基站较远，对时频资源利用率低，将其切换到微基站之后，宏小区可以有更多的时频资源分配给服务范围内的其他终端，提高了宏小区的服务性能。To sum up, the embodiment of the present invention determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station, and selects the corresponding micro cell served by the micro base station as the uplink serving cell for the strong interference terminal, so that the distance from the macro base station Terminals that are farther away and closer to the micro base station have better channel conditions, and the transmit power of the terminal is reduced to reduce power consumption; at the same time, the interference received by the micro base station is reduced, which improves the service performance of the micro base station. In addition, for the macro cell, these terminals are far away from the macro base station, and the utilization rate of time-frequency resources is low. After switching them to the micro base station, the macro cell can have more time-frequency resources allocated to other terminals within the service range , improving the service performance of the macro cell.
实施例六Embodiment six
本发明实施例提供了一种终端，用于执行上述实施例一或实施例二或实施例三中宏基站服务的终端所执行的方法。参见图9，该终端包括：An embodiment of the present invention provides a terminal, configured to execute the method performed by the terminal served by the macro base station in the first embodiment, the second embodiment, or the third embodiment. Referring to Figure 9, the terminal includes:
测量模块901，用于测量微基站所服务的微小区的RSRP，微基站为在宏基站所服务的宏小区内设置的一至多个微基站；The measurement module 901 is used to measure the RSRP of the micro cell served by the micro base station, where the micro base station is one or more micro base stations set in the macro cell served by the macro base station;
发送模块902，用于将测量模块901测量得到的微基站的RSRP发送给宏基站，使宏基站根据接收到的微基站的RSRP及宏基站服务的终端的上行发射功率确定宏基站服务的终端为相对微基站的强干扰终端，并将确定的强干扰终端的上行通信切换到对应的微基站所服务的微小区，以将对应的微基站所服务的微小区作为强干扰终端的上行服务小区。The sending module 902 is configured to send the RSRP of the micro base station measured by the measurement module 901 to the macro base station, so that the macro base station determines that the terminal served by the macro base station is For the strong interference terminal of the micro base station, the uplink communication of the determined strong interference terminal is switched to the micro cell served by the corresponding micro base station, so that the micro cell served by the corresponding micro base station is used as the uplink serving cell of the strong interference terminal.
参见图10，该终端还包括：Referring to Figure 10, the terminal also includes:
接收模块903，用于接收宏基站发送的测量消息；A receiving module 903, configured to receive a measurement message sent by the macro base station;
选择模块904，用于根据接收模块903接收的测量消息测量微基站的RSRP，在微基站中选择RSRP最大的微基站，并将RSRP最大的微基站的小区标识发送给宏基站，使得宏基站根据接收到的RSRP最大的微基站的小区标识将强干扰终端的上行通信切换到RSRP最大的微基站所服务的微小区，以将RSRP最大的微基站所服务的微小区作为强干扰终端的上行服务小区。The selection module 904 is configured to measure the RSRP of the micro base station according to the measurement message received by the receiving module 903, select the micro base station with the largest RSRP among the micro base stations, and send the cell identity of the micro base station with the largest RSRP to the macro base station, so that the macro base station can use The received cell identity of the micro base station with the largest RSRP switches the uplink communication of the strongly interfering terminal to the micro cell served by the micro base station with the largest RSRP, so that the micro cell served by the micro base station with the largest RSRP serves as the uplink service for the strong interfering terminal district.
综上所述，本发明实施例通过宏基站服务的终端测量微小区的RSRP并将测量后的RSRP发送给宏基站，使得宏基站在宏基站服务的终端中确定相对微基站的强干扰终端，并为强干扰终端选择对应的微基站所服务的微小区为上行服务小区，使得距离宏基站较远且距离微基站距离较近的终端具有更好的信道条件，并且降低了该终端的发射功率，减少了功耗；同时该微基站受到的干扰降低，提高了该微基站的服务性能。此外，对于宏小区来说，这些终端距离宏基站较远，对时频资源利用率低，将其切换到微基站之后，宏小区可以有更多的时频资源分配给服务范围内的其他终端，提高了宏小区的服务性能。In summary, in the embodiment of the present invention, the terminal served by the macro base station measures the RSRP of the micro cell and sends the measured RSRP to the macro base station, so that the macro base station determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station, And select the micro cell served by the corresponding micro base station as the uplink serving cell for the terminal with strong interference, so that the terminal farther away from the macro base station and closer to the micro base station has better channel conditions, and reduces the transmit power of the terminal , reducing power consumption; at the same time, the interference received by the micro base station is reduced, and the service performance of the micro base station is improved. In addition, for the macro cell, these terminals are far away from the macro base station, and the utilization rate of time-frequency resources is low. After switching them to the micro base station, the macro cell can have more time-frequency resources allocated to other terminals within the service range , improving the service performance of the macro cell.
实施例七Embodiment seven
本发明实施例提供了一种选择上行服务小区的系统，参见图11，该系统包括：宏基站1101，微基站1102和终端1103。An embodiment of the present invention provides a system for selecting an uplink serving cell. Referring to FIG. 11 , the system includes: a macro base station 1101 , a micro base station 1102 and a terminal 1103 .
其中，宏基站1101如实施例四提供的宏基站，微基站1102如实施例五提供的微基站，终端1103如实施例六提供的终端。Wherein, the macro base station 1101 is the macro base station provided in the fourth embodiment, the micro base station 1102 is the micro base station provided in the fifth embodiment, and the terminal 1103 is the terminal provided in the sixth embodiment.
上述系统可以执行上述任一方法实施例中的方法，详细过程见方法实施例中的描述。The above-mentioned system can execute the method in any one of the above-mentioned method embodiments, and for the detailed process, refer to the description in the method embodiments.
综上所述，本发明实施例通过在宏基站服务的终端中确定相对微基站的强干扰终端，并为强干扰终端选择对应的微基站所服务的微小区为上行服务小区，使得距离宏基站较远且距离微基站距离较近的终端具有更好的信道条件，并且降低了该终端的发射功率，减少了功耗；同时该微基站受到的干扰降低，提高了该微基站的服务性能。此外，对于宏小区来说，这些终端距离宏基站较远，对时频资源利用率低，将其切换到微基站之后，宏小区可以有更多的时频资源分配给服务范围内的其他终端，提高了宏小区的服务性能。To sum up, the embodiment of the present invention determines the strong interference terminal relative to the micro base station among the terminals served by the macro base station, and selects the corresponding micro cell served by the micro base station as the uplink serving cell for the strong interference terminal, so that the distance from the macro base station Terminals that are farther away and closer to the micro base station have better channel conditions, and the transmit power of the terminal is reduced to reduce power consumption; at the same time, the interference received by the micro base station is reduced, which improves the service performance of the micro base station. In addition, for the macro cell, these terminals are far away from the macro base station, and the utilization rate of time-frequency resources is low. After switching them to the micro base station, the macro cell can have more time-frequency resources allocated to other terminals within the service range , improving the service performance of the macro cell.
需要说明的是：上述实施例提供的宏基站、微基站和终端在选择服务小区时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将宏基站、微基站和终端的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的宏基站，微基站和终端与选择服务小区的方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。It should be noted that when the macro base station, the micro base station, and the terminal provided in the above embodiment select a serving cell, the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be assigned by different Completion of functional modules means that the internal structures of the macro base station, micro base station and terminal are divided into different functional modules to complete all or part of the functions described above. In addition, the macro base station, micro base station, and terminal provided in the above embodiments belong to the same concept as the method embodiment for selecting a serving cell, and its specific implementation process is detailed in the method embodiment, and will not be repeated here.
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。Those of ordinary skill in the art can understand that all or part of the steps for implementing the above embodiments can be completed by hardware, and can also be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, and the like.
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.
| Application Number | Priority Date | Filing Date | Title |
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| CN201210428214.XACN103796283B (en) | 2012-10-31 | 2012-10-31 | Method, equipment and system for selecting serving cell |
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| CN201210428214.XACN103796283B (en) | 2012-10-31 | 2012-10-31 | Method, equipment and system for selecting serving cell |
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