CN115483994A - Channel selection method, related equipment and storage medium - Google Patents
Channel selection method, related equipment and storage mediumDownload PDFInfo
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- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
- H—ELECTRICITY
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- H04B—TRANSMISSION
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- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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Abstract
Description
Translated fromChinese技术领域technical field
本申请涉及无线通信技术，尤其涉及一种信道选择方法、相关设备及存储介质。The present application relates to wireless communication technologies, and in particular to a channel selection method, related equipment and storage media.
背景技术Background technique
室内可见光通信(VLC)利用发光二极管(LED)灯的高速闪烁传输信息，以自由空间作为传输信道，是一种高速环保的新型室内接入网技术。Indoor Visible Light Communication (VLC) uses the high-speed flickering of light-emitting diode (LED) lights to transmit information, and uses free space as the transmission channel. It is a new high-speed and environmentally friendly indoor access network technology.
相关技术中，无线通信的物理层新增类型将频率覆盖范围扩展至可见光波段之外：190nm-10000nm。这些频域被分成8个光学频段，VLC节点(AP)以及终端设备工作在一个或者多个频段上。In related technologies, the new type of physical layer of wireless communication extends the frequency coverage beyond the visible light band: 190nm-10000nm. These frequency domains are divided into 8 optical frequency bands, and VLC nodes (APs) and terminal devices work on one or more frequency bands.
在设备发现阶段，终端和VLC AP进行交互，以进行信道选择。然而，这种信道选择方式是基于载波侦听多路访问/冲突避免(CSMA/CA)机制竞争信道，会存在VLC AP之间的干扰。In the device discovery phase, the terminal interacts with the VLC AP for channel selection. However, this channel selection method is based on a carrier sense multiple access/collision avoidance (CSMA/CA) mechanism to compete for channels, and there may be interference between VLC APs.
发明内容Contents of the invention
为解决相关技术问题，本申请实施例提供一种信道选择方法、相关设备及存储介质。To solve related technical problems, embodiments of the present application provide a channel selection method, related equipment, and a storage medium.
本申请实施例的技术方案是这样实现的：The technical scheme of the embodiment of the application is realized in this way:
本申请实施例提供一种信道选择方法，应用于终端，包括：An embodiment of the present application provides a channel selection method applied to a terminal, including:
向第一接入网设备上报第一信息；所述第一信息包含终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；Reporting first information to the first access network device; the first information includes the capability of the terminal in the second mode and/or a channel quality indication of at least one channel of the second access network device; the first access network device can providing access to the terminal in a first manner; the second access network device is capable of providing access to the terminal in a second manner; the first manner is different from the second manner;
接收所述第一接入网设备发送的第二信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道。Receive second information sent by the first access network device; the second information indicates a channel selected for the terminal with at least one second access network device.
上述方案中，所述第一方式的接入包括射频接入。In the above solution, the access in the first manner includes radio frequency access.
上述方案中，所述第二方式的接入包括光通信接入。In the above solution, the access in the second manner includes optical communication access.
上述方案中，通过射频上行链路向所述第一接入网设备上报第一信息。In the above solution, the first information is reported to the first access network device through a radio frequency uplink.
上述方案中，所述信道质量指示包含波长质量指示(WQI)。In the above solution, the channel quality indication includes a wavelength quality indication (WQI).
上述方案中，所述方法还包括：In the above scheme, the method also includes:
接收所述第一接入网设备发送的第三信息；所述第三信息指示所述终端待监听的至少一个第二接入网设备的信道。receiving third information sent by the first access network device; the third information indicates at least one channel of the second access network device to be monitored by the terminal.
上述方案中，所述第三信息至少包括以下之一：In the above solution, the third information includes at least one of the following:
为所述终端选择的与至少一个第二接入网设备的共享信道；A shared channel with at least one second access network device selected for the terminal;
为所述终端选择的与至少一个第二接入网设备的共享信道；A shared channel with at least one second access network device selected for the terminal;
为所述终端选择的至少一个第二接入网设备所支持的所有信道；all channels supported by at least one second access network device selected for the terminal;
所述第一信息中至少一个第二接入网设备信道的信道质量指示包含所述第三信息中指示的所述终端待监听的至少一个第二接入网设备的信道的信道质量指示。The channel quality indication of at least one channel of the second access network device in the first information includes the channel quality indication of the at least one channel of the second access network device indicated in the third information to be monitored by the terminal.
上述方案中，所述第二信息指示为所述终端选择的与至少一个第二接入网设备的最优信道。In the above solution, the second information indicates an optimal channel selected for the terminal with at least one second access network device.
上述方案中，所述方法还包括：In the above scheme, the method also includes:
所述终端与至少一个第二接入网设备在选择的最优信道进行通信。The terminal communicates with at least one second access network device on the selected optimal channel.
本申请实施例还提供一种信道选择方法，应用于第一接入网设备，包括：The embodiment of the present application also provides a channel selection method applied to the first access network device, including:
接收终端上报的第一信息和/或接收至少一个第二接入网设备上报的第四信息；所述第一信息表征终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；Receive the first information reported by the terminal and/or receive the fourth information reported by at least one second access network device; the first information represents the capability of the terminal in the second mode and/or the channel of at least one second access network device channel quality indication; the fourth information represents the capability of the second access network device; the first access network device can provide the terminal with access in the first mode; the second access network device can provide the terminal with The terminal provides access in a second manner; the first manner is different from the second manner;
利用第一信息和/或第四信息，为所述终端选择与至少一个第二接入网设备的信道；Using the first information and/or the fourth information, select a channel with at least one second access network device for the terminal;
向所述终端发送第二信息，并向所述至少一个第二接入网设备发送第五信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道；所述第五信息指示为终端选择的与所述至少一个第二接入网设备中相应第二接入网设备的信道。sending second information to the terminal, and sending fifth information to the at least one second access network device; the second information indicates a channel selected for the terminal with at least one second access network device; The fifth information indicates a channel selected for the terminal with a corresponding second access network device in the at least one second access network device.
上述方案中，所述第一方式的接入包括射频接入。In the above solution, the access in the first manner includes radio frequency access.
上述方案中，通过射频上行链路接收所述终端上报的第一信息。In the above solution, the first information reported by the terminal is received through a radio frequency uplink.
上述方案中，所述第二方式的接入包括光通信接入。In the above solution, the access in the second manner includes optical communication access.
上述方案中，所述信道质量指示包含WQI。In the above solution, the channel quality indicator includes WQI.
上述方案中，所述方法还包括：In the above scheme, the method also includes:
向所述终端发送第三信息；所述第三信息指示所述终端待监听的至少一个第二接入网设备的信道。Send third information to the terminal; the third information indicates a channel of at least one second access network device to be monitored by the terminal.
上述方案中，所述第三信息至少包括以下之一：In the above solution, the third information includes at least one of the following:
为所述终端选择的与至少一个第二接入网设备的共享信道；A shared channel with at least one second access network device selected for the terminal;
为所述终端选择的与至少一个第二接入网设备的共享信道；A shared channel with at least one second access network device selected for the terminal;
为所述终端选择的至少一个第二接入网设备所支持的所有信道；all channels supported by at least one second access network device selected for the terminal;
所述第一信息中至少一个第二接入网设备信道的信道质量指示包含所述第三信息中指示的所述终端待监听的至少一个第二接入网设备的信道的信道质量指示。The channel quality indication of at least one channel of the second access network device in the first information includes the channel quality indication of the at least one channel of the second access network device indicated in the third information to be monitored by the terminal.
上述方案中，所述第二信息指示为所述终端选择的与至少一个第二接入网设备的最优信道；所述第五信息指示为终端选择与所述相应第二接入网设备的最优信道。In the above solution, the second information indicates the optimal channel selected for the terminal with at least one second access network device; the fifth information indicates that the terminal selects the optimal channel with the corresponding second access network device optimal channel.
本申请实施例还提供一种信道选择方法，应用于第二接入网设备，包括：The embodiment of the present application also provides a channel selection method applied to the second access network device, including:
向第一接入网设备发送第四信息；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；Send fourth information to the first access network device; the fourth information represents the capability of the second access network device; the first access network device can provide the terminal with access in the first mode; the second The access network device can provide the terminal with access in a second manner; the first manner is different from the second manner;
接收所述第一接入网设备发送的第五信息；所述第五信息指示为终端选择的与所述第二接入网设备的信道。Receive fifth information sent by the first access network device; the fifth information indicates a channel selected for the terminal with the second access network device.
上述方案中，所述第一方式的接入包括射频接入。In the above solution, the access in the first manner includes radio frequency access.
上述方案中，通过射频上行链路接收所述终端上报的第一信息。In the above solution, the first information reported by the terminal is received through a radio frequency uplink.
上述方案中，所述第二方式的接入包括光通信接入。In the above solution, the access in the second manner includes optical communication access.
上述方案中，所述第五信息指示为终端选择与所述第二接入网设备的最优信道。In the above solution, the fifth information indicates that the terminal selects an optimal channel with the second access network device.
本申请实施例还提供一种终端，包括：第一处理器及第一通信接口；其中，The embodiment of the present application also provides a terminal, including: a first processor and a first communication interface; wherein,
所述第一通信接口，用于向第一接入网设备上报第一信息；所述第一信息包含终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；以及，The first communication interface is configured to report first information to the first access network device; the first information includes the capability of the terminal in the second mode and/or a channel quality indication of at least one channel of the second access network device; The first access network device is capable of providing the terminal with access in a first manner; the second access network device is capable of providing the terminal with access in a second manner; the first method and the second differently; and,
接收所述第一接入网设备发送的第二信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道。Receive second information sent by the first access network device; the second information indicates a channel selected for the terminal with at least one second access network device.
本申请实施例还提供一种第一网络设备，包括：第二处理器及第二通信接口；其中，The embodiment of the present application also provides a first network device, including: a second processor and a second communication interface; wherein,
所述第二通信接口，用于接收终端上报的第一信息和/或接收至少一个第二接入网设备上报的第四信息；所述第一信息表征终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；以及向所述终端发送第二信息，并向所述至少一个第二接入网设备发送第五信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道；所述第五信息指示为终端选择的与所述至少一个第二接入网设备中相应第二接入网设备的信道；The second communication interface is configured to receive the first information reported by the terminal and/or receive the fourth information reported by at least one second access network device; the first information represents the capability of the terminal in the second mode and/or at least A channel quality indication of a second access network device channel; the fourth information represents the capability of the second access network device; the first access network device can provide the terminal with access in the first mode; The second access network device is capable of providing access to the terminal in a second manner; the first manner is different from the second manner; and sending second information to the terminal, and sending to the at least one second access The network access device sends fifth information; the second information indicates the channel selected for the terminal with at least one second access network device; the fifth information indicates the channel selected for the terminal with the at least one second access network device a channel corresponding to the second access network device in the network access device;
所述第二处理器，用于利用第一信息和/或第四信息，为所述终端选择与至少一个第二接入网设备的信道。The second processor is configured to use the first information and/or the fourth information to select, for the terminal, a channel with at least one second access network device.
本申请实施例还提供一种第二网络设备，包括：第三处理器及第三通信接口；其中，The embodiment of the present application also provides a second network device, including: a third processor and a third communication interface; wherein,
所述第三通信接口，用于向第一接入网设备发送第四信息；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；以及，The third communication interface is configured to send fourth information to the first access network device; the fourth information represents the capability of the second access network device; the first access network device can provide the terminal with the first Access in a manner; the second access network device is capable of providing access in a second manner to the terminal; the first manner is different from the second manner; and,
接收所述第一接入网设备发送的第五信息，所述第五信息指示为终端选择的与所述第二接入网设备的信道。Receive fifth information sent by the first access network device, where the fifth information indicates the channel selected for the terminal with the second access network device.
本申请实施例还提供一种终端，包括：第一处理器和用于存储能够在处理器上运行的计算机程序的第一存储器，An embodiment of the present application also provides a terminal, including: a first processor and a first memory for storing a computer program that can run on the processor,
其中，所述第一处理器用于运行所述计算机程序时，执行上述终端侧任一方法的步骤。Wherein, when the first processor is configured to run the computer program, it executes the steps of any method on the terminal side above.
本申请实施例还提供一种第一接入网设备，包括：第二处理器和用于存储能够在处理器上运行的计算机程序的第二存储器，The embodiment of the present application also provides a first access network device, including: a second processor and a second memory for storing computer programs that can run on the processor,
其中，所述第二处理器用于运行所述计算机程序时，执行上述第一接入网设备侧任一方法的步骤。Wherein, when the second processor is configured to run the computer program, execute the steps of any one of the above methods on the first access network device side.
本申请实施例还提供一种第二接入网设备，包括：第三处理器和用于存储能够在处理器上运行的计算机程序的第三存储器，The embodiment of the present application also provides a second access network device, including: a third processor and a third memory for storing computer programs that can run on the processor,
其中，所述第三处理器用于运行所述计算机程序时，执行上述第二接入网设备侧任一方法的步骤。Wherein, when the third processor is configured to execute the computer program, execute the steps of any method on the second access network device side.
本申请实施例还提供一种存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述终端侧任一方法的步骤，或者实现上述第一接入网设备侧任一方法的步骤，或者实现上述第二接入网设备侧任一方法的步骤。The embodiment of the present application also provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any of the above methods on the terminal side are implemented, or any of the above methods on the first access network device side is implemented. steps, or realize the steps of any method on the side of the second access network device above.
本申请实施例提供的信道选择方法、相关设备及存储介质，终端向第一接入网设备上报第一信息；所述第一信息包含终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；第二接入网设备向所述第一接入网设备上报第四信息；所述第一接入网设备利用第一信息和/或第四信息，为所述终端选择与至少一个第二接入网设备的信道；向所述终端发送第二信息，并向所述至少一个第二接入网设备发送第五信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道；所述第五信息指示为终端选择的与所述至少一个第二接入网设备中相应第二接入网设备的信道。本申请实施例提供的方案，通过第一接入网设备控制第二接入网设备和终端进行信道选择，能够避免第二接入网设备之间的干扰，从而提高整个异构网络的资源利用率。In the channel selection method, related equipment, and storage medium provided in the embodiments of the present application, the terminal reports the first information to the first access network equipment; the first information includes the capability of the terminal in the second mode and/or at least one second access network A channel quality indicator of a network device channel; the first access network device can provide the terminal with access in the first mode; the second access network device can provide the terminal with access in the second mode; The first method is different from the second method; the second access network device reports fourth information to the first access network device; the first access network device uses the first information and/or the fourth information, Selecting a channel with at least one second access network device for the terminal; sending second information to the terminal, and sending fifth information to the at least one second access network device; the second information indicates A channel selected by the terminal with at least one second access network device; the fifth information indicates a channel selected for the terminal with a corresponding second access network device in the at least one second access network device. The solution provided by the embodiment of the present application controls the second access network device and the terminal to perform channel selection through the first access network device, which can avoid interference between the second access network devices, thereby improving resource utilization of the entire heterogeneous network Rate.
附图说明Description of drawings
图1a为一种信道聚合示意图；Figure 1a is a schematic diagram of channel aggregation;
图1b为一种保护信道示意图；Figure 1b is a schematic diagram of a protection channel;
图2为一种超帧结构示意图；FIG. 2 is a schematic diagram of a superframe structure;
图3为相关技术中信道选择的方法流程示意图；FIG. 3 is a schematic flow diagram of a method for channel selection in the related art;
图4为一种信道聚合和保护信道情况的比特位图(bitmap)示意图；Fig. 4 is a schematic diagram of a bitmap (bitmap) of a channel aggregation and protection channel situation;
图5为一种异构网络结构示意图；FIG. 5 is a schematic diagram of a heterogeneous network structure;
图6为图5所示的网络结构中一种信道选择的方法流程示意图；Fig. 6 is a schematic flow chart of a channel selection method in the network structure shown in Fig. 5;
图7为本申请实施例一种信道选择的方法流程示意图；FIG. 7 is a schematic flowchart of a channel selection method according to an embodiment of the present application;
图8为本申请实施例第二种信道选择的方法流程示意图；FIG. 8 is a schematic flowchart of a second channel selection method according to an embodiment of the present application;
图9为本申请实施例第三种信道选择的方法流程示意图；FIG. 9 is a schematic flowchart of a third channel selection method according to an embodiment of the present application;
图10为本申请应用实施例第一种信道选择的方法流程示意图；FIG. 10 is a schematic flowchart of a first channel selection method in an application embodiment of the present application;
图11为本申请应用实施例第二种信道选择的方法流程示意图；FIG. 11 is a schematic flowchart of a second channel selection method in an application embodiment of the present application;
图12为本申请实施例一种信道选择装置结构示意图；FIG. 12 is a schematic structural diagram of a channel selection device according to an embodiment of the present application;
图13为本申请实施例第二种信道选择装置结构示意图；FIG. 13 is a schematic structural diagram of a second channel selection device according to an embodiment of the present application;
图14为本申请实施例第三种信道选择装置结构示意图；FIG. 14 is a schematic structural diagram of a third channel selection device according to an embodiment of the present application;
图15为本申请实施例终端结构示意图；FIG. 15 is a schematic structural diagram of a terminal according to an embodiment of the present application;
图16为本申请实施例第一接入网设备结构示意图；FIG. 16 is a schematic structural diagram of a first access network device according to an embodiment of the present application;
图17为本申请实施例第二接入网设备结构示意图；FIG. 17 is a schematic structural diagram of a second access network device according to an embodiment of the present application;
图18本申请实施例信道选择系统结构示意图。FIG. 18 is a schematic structural diagram of a channel selection system according to an embodiment of the present application.
具体实施方式detailed description
下面结合附图及实施例对本申请再作进一步详细的描述。The application will be further described in detail below in conjunction with the accompanying drawings and embodiments.
表1示出了8个光学频段，VLC AP以及终端设备可以工作在一个或者多个频段上。其中，表1中的代码(code)编号表示对应频段的波长特性，存在于物理层头部，用于供接收端优化性能。Table 1 shows 8 optical frequency bands, and VLC APs and terminal devices can work on one or more frequency bands. Wherein, the code (code) number in Table 1 indicates the wavelength characteristic of the corresponding frequency band, which exists in the header of the physical layer and is used for optimizing the performance of the receiving end.
表1Table 1
当收发端支持多个频段时，可以利用信道聚合(英文可以表达为channelaggregation)或者保护信道(英文可以表达为guard channel)在多个频段上进行传输。其中，信道聚合用于指示跨越多个频段的光源在多个频段传输，如图1a所示；保护信道用于指示无意泄漏到其他频段的光源，其信息在接收端被丢弃，如图1b所示。这里，定义二者的准则是相对于带内最大值，带外泄露超过20dB。When the transceiver supports multiple frequency bands, channel aggregation (which can be expressed as channel aggregation in English) or guard channel (which can be expressed as guard channel in English) can be used to transmit on multiple frequency bands. Among them, channel aggregation is used to indicate that the light source across multiple frequency bands transmits in multiple frequency bands, as shown in Figure 1a; the protection channel is used to indicate the light source that leaks to other frequency bands unintentionally, and its information is discarded at the receiving end, as shown in Figure 1b Show. Here, the criterion for defining the two is that the out-of-band leakage exceeds 20dB relative to the in-band maximum value.
这里，信道聚合和保护信道的信息存在于媒体访问控制(MAC)的物理能力信息元素(PHY Capabilities information element)中。其中，在设备发现阶段，由于不知道接收端的能力，所有光源上传输的数据是相同的；传输设备需要在PHY Capabilitiesinformation element中指示出信道聚合和保护信道的信息。Here, information on channel aggregation and protection channels exists in a physical capabilities information element (PHY Capabilities information element) of a medium access control (MAC). Among them, in the device discovery phase, since the capabilities of the receiving end are not known, the data transmitted on all light sources is the same; the transmitting device needs to indicate the channel aggregation and protection channel information in the PHY Capabilitiesinformation element.
VLC的帧结构定义统一采用超帧结构，每个超帧都是由若干个长度相同的时隙构成的，每个时隙内可以传输控制帧或者数据帧。可见光个域网(LiPAN)可支持VLC AP和射频(RF)AP组成的异构网络。LiPAN的管理节点利用超帧来划分网络的信道时间，如图2所示，一个超帧结构以一个信标帧为起始，包含一个激活阶段和一个非激活阶段，在非激活阶段，管理节点可以进入节电模式。每个超帧的激活阶段可进一步分为信标区域(BP)、竞争接入区域(CAP，Contention Access Period)CAP和无竞争区域((CFP，ContenTIon-Free Period)。其中，BP用于信标的发送，开始于超帧的第一个时隙，可进一步划分为多个信标(英文可以表达为beacon)时隙，每个VLC AP可占用其中一个信标时隙发送属于本AP的信标帧，VLC AP在每个超帧的信标时隙中发送信标帧。信标帧中描述了超帧结构、LiPAN的调度信息及其他LiPAN的管理信息。终端通过信标帧来与VLC AP保持同步，并根据信标帧中的调度信息接入信道。CAP被安排在紧接着BP之后的时间段，在CAP中，终端采用(CSMA/CA)机制竞争信道。如果存在CFP，则CFP应该紧接着CAP开始，一直持续到超帧的激活阶段结束，在CFP中，为特定应用分配专用的带宽资源。所有传输应在超帧结束前结束。The VLC frame structure definition uniformly adopts the superframe structure, and each superframe is composed of several time slots of the same length, and control frames or data frames can be transmitted in each time slot. Visible light personal area network (LiPAN) can support a heterogeneous network composed of VLC APs and radio frequency (RF) APs. The management node of LiPAN uses superframes to divide the channel time of the network. As shown in Figure 2, a superframe structure starts with a beacon frame and includes an activation phase and an inactivation phase. In the inactivation phase, the management node Can enter power saving mode. The activation phase of each superframe can be further divided into beacon area (BP), contention access area (CAP, Contention Access Period) CAP and contention-free area ((CFP, Contention-Free Period). Among them, BP is used for signaling The target transmission starts from the first time slot of the superframe, and can be further divided into multiple beacon (English can be expressed as beacon) time slots. Each VLC AP can occupy one of the beacon time slots to send the signal belonging to the AP. The VLC AP sends a beacon frame in the beacon slot of each superframe. The beacon frame describes the superframe structure, LiPAN scheduling information and other LiPAN management information. The terminal communicates with the VLC through the beacon frame The AP keeps synchronization and accesses the channel according to the scheduling information in the beacon frame. The CAP is arranged in the time period immediately after the BP, and in the CAP, the terminal adopts the (CSMA/CA) mechanism to compete for the channel. If there is a CFP, the CFP It should start immediately after CAP and continue until the end of the activation phase of the superframe. In CFP, dedicated bandwidth resources are allocated for specific applications. All transmissions should end before the end of the superframe.
如图3所示，在设备发现阶段，如果一个设备支持多个传输颜色信道，就会与协调器(英文可以表达为coordinator，即VLC AP)交互WQI信息，WQI信息用于信道选择；如果一个设备仅支持单颜色信道，就没有信道选择流程。对于星型拓扑来说，协调器通过发送信标帧进行信道选择。As shown in Figure 3, in the device discovery phase, if a device supports multiple transmission color channels, it will exchange WQI information with the coordinator (English can be expressed as coordinator, VLC AP), and the WQI information is used for channel selection; if a The device only supports single color channel, there is no channel selection process. For star topology, the coordinator performs channel selection by sending beacon frames.
假设协调器支持的信道为M1(即支持M1个传输颜色信道)，终端支持的信道为M2(即支持M2个传输颜色信道)，K表示二者的共享信道，即终端和协调器共同支持的信道，也即二者支持的信道的交集，K大于或等于1。Assume that the channel supported by the coordinator is M1 (that is, M1 transmission color channels are supported), the channel supported by the terminal is M2 (that is, M2 transmission color channels are supported), and K represents the shared channel of the two, that is, the terminal and the coordinator jointly support Channel, that is, the intersection of channels supported by the two, K is greater than or equal to 1.
如图3所示，信道选择的具体流程包括以下步骤：As shown in Figure 3, the specific process of channel selection includes the following steps:
步骤301：协调器在M1上发送信标；Step 301: the coordinator sends a beacon on M1;
步骤302：终端通过MAC的PHY Capabilities information element上报设备能力；Step 302: The terminal reports the device capabilities through the PHY Capabilities information element of the MAC;
这里，所述设备能力包括信道聚合和保护信道的支持情况等，其中，信道聚合和保护信道的情况可以用bitmap指示。示例性地，如图4所示，假设如果band 1和band 2需要聚合(假设是蓝光LED)，信道聚合情况的bitmap是01100000，保护bitmap是00000000；再比如，如果band 1被使用，但是在band3，4，5有泄露(假设白光LED)，则信道聚合情况的bitmap是01000000，保护信道情况的bitmap是00011100。Here, the device capability includes channel aggregation and protection channel support, etc., wherein the channel aggregation and protection channel status can be indicated by a bitmap. Exemplarily, as shown in Figure 4, suppose that if
步骤301和302是协调器和终端互相交换能力的过程。
步骤303：协调器在K上发送信标；Step 303: the coordinator sends a beacon on K;
这里，通过能力交换，协调器能够获知与终端共享的共享信道K。实际应用时，由于环境光干扰，终端设备可能只能在x个信道上接收信标。Here, through capability exchange, the coordinator can learn the shared channel K shared with the terminal. In practical applications, due to ambient light interference, a terminal device may only receive beacons on x channels.
步骤304：终端测量得到K个信道的WQI值，并上报给协调器；Step 304: The terminal measures and obtains WQI values of K channels, and reports to the coordinator;
步骤305：终端设备在K个共享信道上发起接入；Step 305: The terminal device initiates access on K shared channels;
这里，接入请求包含设备能力信息，协调器在K个信道接收，由于环境光干扰，可能只能在y个信道上接收；Here, the access request contains device capability information, and the coordinator receives it on K channels. Due to ambient light interference, it may only be received on y channels;
步骤306：协调器计算K个信道的WQI值，并下发给终端；Step 306: the coordinator calculates the WQI values of K channels and sends them to the terminal;
步骤307：协调器下发用于接入的收发信道信息；Step 307: The coordinator sends information about the receiving and sending channels for access;
步骤308：终端在协调器确定的收发信道上进行数据传输。Step 308: the terminal performs data transmission on the sending and receiving channel determined by the coordinator.
需要说明的是：由于VLC具有非常强的方向性，比如协调器靠近窗边，会比终端设备收到更多的环境光，因此实际应用时，x和y的值可能是不同的。It should be noted that because VLC has very strong directionality, for example, the coordinator is close to the window and receives more ambient light than the terminal device, so the values of x and y may be different in actual application.
同时，上述信道选择流程均在CAP中完成。At the same time, the above channel selection process is all completed in the CAP.
从上面的描述可以看出，在上述的信道选择方案中，终端和协调器的交互都是通过可见光实现的，相比于无线通信的穿透性，VLC很容易受到遮挡物的影响，造成通信链路的中断，从而影响信道选择过程；同时，终端和协调器的交互都在CAP中完成，且基于CSMA/CA机制竞争信道，发送数据的同时不能检测信道有无冲突，只能尽量避免冲突，因此所以还是存在冲突的可能性，另外，这种机制比较耗时，不具有实时性。From the above description, it can be seen that in the above channel selection scheme, the interaction between the terminal and the coordinator is realized through visible light. Compared with the penetrability of wireless communication, VLC is easily affected by obstructions, causing communication The interruption of the link will affect the channel selection process; at the same time, the interaction between the terminal and the coordinator is completed in the CAP, and the channel is competed based on the CSMA/CA mechanism. When sending data, it is not possible to detect whether there is a channel conflict, and it can only avoid conflict as much as possible. , so there is still the possibility of conflict. In addition, this mechanism is time-consuming and not real-time.
另一方面，由于LED光源发出的光具有一定的方向性，造成其自身覆盖范围较小，当用户移动到可见光通信覆盖不到的区域时会中断服务，所以相比于无线通信的穿透性，VLC很容易受到遮挡物的影响，造成通信链路的脆弱。因此下一代网络的发展趋势是异构网络的融合，将VLC与其他无线接入方式结合起来。在一个室内场所中，可以通过VLC和无线电网络提供全区域覆盖，保护用户的持续性接入，防止用户在可见光通信热点发生通信中断问题，同时，当无线电通信网络的业务负载过重时，将部分用户接入到VLC AP，既满足其对网络速率的高速要求，也实现网络负载均衡。如图5所示，每个协调器(即VLC AP)通过回程链路与全局控制器(即RF AP)相连，每个协调器向LiPAN设备(即终端)提供可见光通信接入，作为全局控制器的RF AP向终端提供RF接入。回程链路可以是有线链路或者无线链路，其中，有线链路可以是电力线通信链路、以太网链路或者光线链路等，无线链路可以是无线局域网链路、蜂窝链路等。On the other hand, because the light emitted by the LED light source has a certain directionality, its own coverage is small, and when the user moves to an area that cannot be covered by visible light communication, the service will be interrupted, so compared to the penetrability of wireless communication , VLC is easily affected by occluders, resulting in a fragile communication link. Therefore, the development trend of next-generation networks is the integration of heterogeneous networks, combining VLC with other wireless access methods. In an indoor place, VLC and radio network can be used to provide full-area coverage to protect users' continuous access and prevent users from experiencing communication interruptions in visible light communication hotspots. At the same time, when the business load of the radio communication network is too heavy, it will Some users are connected to VLC AP, which not only meets their high-speed requirements for network speed, but also realizes network load balancing. As shown in Figure 5, each coordinator (ie, VLC AP) is connected to the global controller (ie, RF AP) through a backhaul link, and each coordinator provides visible light communication access to LiPAN devices (ie, terminals) as a global control The RF AP of the device provides RF access to the terminal. The backhaul link may be a wired link or a wireless link, wherein the wired link may be a power line communication link, an Ethernet link, or an optical link, etc., and the wireless link may be a wireless local area network link, a cellular link, or the like.
在异构网络中，当采用基于CSMA/CA机制竞争信道时，可以采用如图6所示的信道选择流程。假设VLC AP支持M1个信道，终端支持M2个信道，二者有K个共享信道；信道具体包括以下步骤：In a heterogeneous network, when a CSMA/CA-based mechanism is used to compete for channels, the channel selection process shown in Figure 6 can be used. Assume that the VLC AP supports M1 channels, the terminal supports M2 channels, and the two have K shared channels; the channel specifically includes the following steps:
步骤601：VLC AP在M1个信道上发送信标；Step 601: VLC AP sends beacons on M1 channels;
步骤602：终端向RF AP上报自身的能力信息；Step 602: The terminal reports its own capability information to the RF AP;
步骤603：RF AP向VLC AP发送终端上报的能力信息；Step 603: The RF AP sends the capability information reported by the terminal to the VLC AP;
步骤604：VLC AP根据终端的能力获知K个共享信道后，在K个共享信道上发送信标；Step 604: After the VLC AP learns the K shared channels according to the capabilities of the terminal, it sends beacons on the K shared channels;
步骤605：终端向RF AP上报WQI；Step 605: The terminal reports the WQI to the RF AP;
步骤606：RF AP向VLC AP发送终端上报的WQI；Step 606: The RF AP sends the WQI reported by the terminal to the VLC AP;
步骤607：VLC AP根据终端上报的WQI选择最优信道，并与终端在最优信道上传输数据。Step 607: The VLC AP selects the optimal channel according to the WQI reported by the terminal, and transmits data with the terminal on the optimal channel.
当采用图6所示的信道选择流程，且系统中有多个VLC AP时，若它们同时选择了相同的下行信道，就会造成冲突。When the channel selection process shown in Figure 6 is adopted and there are multiple VLC APs in the system, if they select the same downlink channel at the same time, conflicts will occur.
基于此，在本申请的各种实施例中，由RF AP控制VLC AP进行信道选择流程，即通过RF AP对VLC AP进行控制，选择合适的信道，避免VLC AP之间的干扰，从而提高整个异构网络的资源利用率。Based on this, in various embodiments of the present application, the RF AP controls the VLC AP to perform a channel selection process, that is, the RF AP controls the VLC AP, selects an appropriate channel, and avoids interference between VLC APs, thereby improving the overall Resource utilization in heterogeneous networks.
本申请实施例提供了一种信道选择方法，应用于终端，如图7所示，该方法包括：The embodiment of the present application provides a channel selection method applied to a terminal, as shown in FIG. 7, the method includes:
步骤701：向第一接入网设备上报第一信息；所述第一信息包含终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；Step 701: Report the first information to the first access network device; the first information includes the capability of the terminal in the second mode and/or the channel quality indication of at least one channel of the second access network device; the first access network device The network device can provide the terminal with access in a first mode; the second access network device can provide the terminal with access in a second mode; the first mode is different from the second mode;
步骤702：接收所述第一接入网设备发送的第二信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道。Step 702: Receive second information sent by the first access network device; the second information indicates a channel selected for the terminal with at least one second access network device.
其中，实际应用时，所述终端可以称为用户设备(UE)、终端设备或用户等。Wherein, in actual application, the terminal may be called user equipment (UE), terminal device or user, and so on.
所述第一接入网设备和第二接入网设备形成异构网络。所述第一接入网设备可以称为主节点(MN，Master Node)，相应地，所述第二接入网设备也可以称为辅节点(SN，Secondary Node)。The first access network device and the second access network device form a heterogeneous network. The first access network device may be called a master node (MN, Master Node), and correspondingly, the second access network device may also be called a secondary node (SN, Secondary Node).
在一实施例中，所述第一方式的接入包括射频接入。In an embodiment, the access in the first manner includes radio frequency access.
其中，所述终端可以通过射频上行链路向所述第一接入网设备上报第一信息。Wherein, the terminal may report the first information to the first access network device through a radio frequency uplink.
实际应用时，所述第一信息可以承载在物理上行链路控制信道(PUCCH)、物理随机接入信道(PRACH)等上行物理信道上，所述第一信息还可以承载在上行无线资源控制RRC信令或上行MAC层信令上。In practical application, the first information may be carried on an uplink physical channel such as a physical uplink control channel (PUCCH), a physical random access channel (PRACH), and the first information may also be carried on an uplink radio resource control RRC signaling or uplink MAC layer signaling.
在一实施例中，所述第二方式的接入包括光通信接入，也就是说，所述第一接入网设备能够向所述终端提供射频接入，所述第二接入网设备能够向所述终端提供可见光通信接入；相应地，所述第一接入网设备可以包括RF AP，所述第二接入网设备包括RLC AP。In an embodiment, the access in the second mode includes optical communication access, that is to say, the first access network device can provide radio frequency access to the terminal, and the second access network device Visible light communication access can be provided to the terminal; correspondingly, the first access network device may include an RF AP, and the second access network device may include an RLC AP.
这里，当所述第二方式的接入包括光通信接入时，所述终端第二方式的能力可以包括：支持的信道、信道聚合和保护信道的支持情况等。Here, when the access in the second manner includes optical communication access, the capabilities of the terminal in the second manner may include: supported channels, channel aggregation, and protection channel support.
在一实施例中，所述信道质量指示包含WQI。In one embodiment, the channel quality indicator includes WQI.
其中，WQI是测量接收帧的强度和/或质量，接收端(即所述终端)可以通过能量检测、信噪比(SNR)估计或者这些方式的结合等实现WQI的测量。对于每个接收帧都进行WQI测量，测量结果会通过物理子层的PD-DATA.indication9上报给MAC子层，取值从0x00到0xff。WQI值会根据接收帧物理层头部的Code值，指示出频带计划标志，每个WQI值组都包括频带计划标志(英文可以表达为Band plan code)和相应的WQI值，如表2所示。Wherein, WQI is to measure the strength and/or quality of received frames, and the receiving end (ie, the terminal) can implement WQI measurement through energy detection, signal-to-noise ratio (SNR) estimation, or a combination of these methods. WQI measurement is performed for each received frame, and the measurement result will be reported to the MAC sublayer through PD-DATA.indication9 of the physical sublayer, and the value ranges from 0x00 to 0xff. The WQI value will indicate the frequency band plan flag according to the Code value of the physical layer header of the received frame. Each WQI value group includes the frequency band plan flag (English can be expressed as Band plan code) and the corresponding WQI value, as shown in Table 2 .
表2Table 2
WQI通过MAC子层的WQI信息元素(WQI information element)发给通信对端，每个WQI值可以取多个包的平均值。WQI information element的长度是8个八位位组，如表2所示，提供所有频带计划标志的WQI信息，如果不包含某个频带计划标志，WQI的值为0。The WQI is sent to the communication peer through the WQI information element (WQI information element) of the MAC sublayer, and each WQI value can take the average value of multiple packets. The length of the WQI information element is 8 octets. As shown in Table 2, WQI information of all frequency band plan flags is provided. If a certain frequency band plan flag is not included, the WQI value is 0.
实际应用时，所述第一接入网设备可以指示终端待监听的第二接入网设备的信道，所述终端基于所述第一接入网设备的指示监听第二接入网设备的信道，并上报对应的至少一个第二接入网设备信道的信道质量指示，如此，能够避免终端在所有信道上进行盲检测，节省功耗。In practical applications, the first access network device may indicate to the terminal the channel of the second access network device to be monitored, and the terminal monitors the channel of the second access network device based on the indication of the first access network device , and report the channel quality indication of at least one channel of the corresponding second access network device. In this way, it is possible to prevent the terminal from performing blind detection on all channels and save power consumption.
基于此，在一实施例中，该方法还可以包括：Based on this, in an embodiment, the method may also include:
接收所述第一接入网设备发送的第三信息；所述第三信息指示所述终端待监听的至少一个第二接入网设备的信道。receiving third information sent by the first access network device; the third information indicates at least one channel of the second access network device to be monitored by the terminal.
其中，所述第三信息可以至少包括以下之一：Wherein, the third information may include at least one of the following:
为所述终端选择的与至少一个第二接入网设备的共享信道；A shared channel with at least one second access network device selected for the terminal;
为所述终端选择的与至少一个第二接入网设备的共享信道；A shared channel with at least one second access network device selected for the terminal;
为所述终端选择的至少一个第二接入网设备所支持的所有信道；all channels supported by at least one second access network device selected for the terminal;
相应地，所述第一信息中至少一个第二接入网设备信道的信道质量指示包含所述第三信息中指示的所述终端待监听的至少一个第二接入网设备的信道的信道质量指示。Correspondingly, the channel quality indication of at least one channel of the second access network device in the first information includes the channel quality of the channel of the at least one second access network device to be monitored by the terminal indicated in the third information instruct.
实际应用时，所述第三信息可以承载在物理下行控制信道(PDCCH)上。In practical application, the third information may be carried on a physical downlink control channel (PDCCH).
这里，当所述第三信息包括为所述终端选择的与至少一个第二接入网设备的共享信道时，所述第三信息具体可以包括为所述终端选择的与至少一个第二接入网设备中每个第二接入网设备的共享信道。Here, when the third information includes the shared channel selected for the terminal with at least one second access network device, the third information may specifically include the shared channel selected for the terminal with at least one second access network device. The shared channel of each second access network device in the network device.
当所述第三信息包括为所述终端选择的至少一个第二接入网设备所支持的所有信道时，所述第三信息具体可以包括为所述终端选择的至少一个第二接入网设备中每个第二接入网设备所支持的所有信道。When the third information includes all channels supported by at least one second access network device selected for the terminal, the third information may specifically include at least one second access network device selected for the terminal All channels supported by each second access network device in .
所述第二信息具体可以指示为所述终端选择的与至少一个第二接入网设备中每个第二接入网设备的信道。The second information may specifically indicate a channel selected for the terminal with each second access network device in at least one second access network device.
在一实施例中，所述第二信息指示为所述终端选择的与至少一个第二接入网设备的最优信道。In an embodiment, the second information indicates an optimal channel selected for the terminal with at least one second access network device.
相应地，所述终端与至少一个第二接入网设备可以在选择的最优信道进行通信。当有至少两个第二接入网设备时，所述终端与至少两个第二接入网设备可以同时在选择的最优信道进行通信。Correspondingly, the terminal can communicate with at least one second access network device on the selected optimal channel. When there are at least two second access network devices, the terminal and the at least two second access network devices can simultaneously communicate on the selected optimal channel.
这里，所述最优信道是指：所述第一接入网设备确定的每个第二接入网设备可用的至少一个信道中性能最优(可以通过信道质量指示来确定性能)的信道。Here, the optimal channel refers to: the channel with the best performance (the performance may be determined through a channel quality indicator) among at least one channel available to each second access network device determined by the first access network device.
相应地，本申请还提供了一种信道选择方法，应用于第一接入网设备，如图8所示，该方法包括：Correspondingly, the present application also provides a channel selection method applied to the first access network device, as shown in FIG. 8 , the method includes:
步骤801：接收终端上报的第一信息和/或接收至少一个第二接入网设备上报的第四信息；所述第一信息表征终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；Step 801: Receive the first information reported by the terminal and/or receive the fourth information reported by at least one second access network device; the first information represents the capability of the terminal in the second mode and/or at least one second access network A channel quality indication of a device channel; the fourth information represents the capability of the second access network device; the first access network device can provide the terminal with access in the first mode; the second access network The device is capable of providing the terminal with access in a second manner; the first manner is different from the second manner;
步骤802：利用第一信息和/或第四信息，为所述终端选择与至少一个第二接入网设备的信道；Step 802: Using the first information and/or the fourth information, select a channel with at least one second access network device for the terminal;
步骤803：向所述终端发送第二信息，并向所述至少一个第二接入网设备发送第五信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道；所述第五信息指示为终端选择的与所述至少一个第二接入网设备中相应第二接入网设备的信道。Step 803: Send second information to the terminal, and send fifth information to the at least one second access network device; the second information indicates the at least one second access network device selected for the terminal channel; the fifth information indicates the channel selected for the terminal and the corresponding second access network device in the at least one second access network device.
其中，实际应用时，所述第二接入网设备通过回程链路与第一接入网设备相连。Wherein, in actual application, the second access network device is connected to the first access network device through a backhaul link.
在一实施例中，在步骤801中，所述第一接入网设备通过射频上行链路接收所述终端上报的第一信息。In an embodiment, in
在步骤802中，实际应用时，当所述第一接入网设备接收到第一信息时，利用所述第一信息为所述终端选择与至少一个第二接入网设备的信道；当接收到第一信息和第四信息时，利用所述第一信息和第四信息，为所述终端选择与至少一个第二接入网设备的信道；当接收到所述第四信息时，可以利用所述第四信息为所述终端选择与至少一个第二接入网设备的信道。In
所述第一接入网设备可以根据负载均衡、干扰协调等原则控制至少一个第二接入网设备中每个第二接入网设备进行与终端的信道选择，即所述第一接入网设备根据负载均衡、干扰协调等原则分别为每个第二接入网设备选择合适的信道。本申请实施例对所述第一接入网选择信道的具体流程不作限定。The first access network device may control each of the at least one second access network device to perform channel selection with the terminal according to principles such as load balancing and interference coordination, that is, the first access network device The device selects an appropriate channel for each second access network device respectively according to principles such as load balancing and interference coordination. The embodiment of the present application does not limit the specific process of channel selection by the first access network.
在一实施例中，该方法还可以包括：In one embodiment, the method may also include:
向所述终端发送第三信息；所述第三信息指示所述终端待监听的至少一个第二接入网设备的信道。Send third information to the terminal; the third information indicates a channel of at least one second access network device to be monitored by the terminal.
所述第四信息可以包括：第二接入网设备支持的信道信息。The fourth information may include: channel information supported by the second access network device.
其中，在一实施例中，所述第五信息可以指示为终端选择的与所述相应第二接入网设备的最优信道。Wherein, in an embodiment, the fifth information may indicate the optimal channel selected for the terminal and the corresponding second access network device.
相应地，本申请实施例还提供了一种信道选择方法，应用于第二接入网设备，如图9所示，该方法包括：Correspondingly, the embodiment of the present application also provides a channel selection method, which is applied to the second access network device, as shown in FIG. 9 , the method includes:
步骤901：向第一接入网设备发送第四信息；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；Step 901: Send fourth information to the first access network device; the fourth information represents the capability of the second access network device; the first access network device can provide the terminal with access in the first mode; The second access network device can provide the terminal with access in a second manner; the first manner is different from the second manner;
步骤902：接收所述第一接入网设备发送的第五信息，所述第五信息指示为终端选择的与所述第二接入网设备的信道。Step 902: Receive fifth information sent by the first access network device, where the fifth information indicates a channel selected for the terminal with the second access network device.
其中，实际应用时，所述第二接入网设备在自身支持的信道上发送信标，或者在终端与自身的共享信道上发送信标。Wherein, in actual application, the second access network device sends a beacon on a channel supported by itself, or sends a beacon on a channel shared between the terminal and itself.
这里，所述第一接入网设备可以向所述第二接入网设备发送第六信息，所述第六信息指示终端与所述第二接入网设备的共享信道，以便所述第二接入网设备可以获知终端与自身的共享信道，进而在终端与自身的共享信道上发送信标。Here, the first access network device may send sixth information to the second access network device, where the sixth information indicates the shared channel between the terminal and the second access network device, so that the second The access network device can learn the shared channel between the terminal and itself, and then send a beacon on the shared channel between the terminal and itself.
本申请实施例提供的信道选择方法，终端向第一接入网设备上报第一信息；所述第一信息包含终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；第二接入网设备向所述第一接入网设备上报第四信息；所述第一接入网设备利用第一信息和/或第四信息，为所述终端选择与至少一个第二接入网设备的信道；向所述终端发送第二信息，并向所述至少一个第二接入网设备发送第五信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道；所述第五信息指示为终端选择的与所述至少一个第二接入网设备中相应第二接入网设备的信道。本申请实施例提供的方案，通过第一接入网设备控制第二接入网设备和终端进行信道选择，能够避免第二接入网设备之间的干扰，从而提高整个异构网络的资源利用率。In the channel selection method provided in the embodiment of the present application, the terminal reports first information to the first access network device; the first information includes the capability of the terminal in the second mode and/or the channel quality of at least one channel of the second access network device indication; the first access network device can provide the terminal with access in the first mode; the second access network device can provide the terminal with the access in the second mode; the first mode and The second method is different; the second access network device reports fourth information to the first access network device; the first access network device uses the first information and/or the fourth information to select and match the terminal for the terminal. A channel of at least one second access network device; sending second information to the terminal, and sending fifth information to the at least one second access network device; the second information indicates the connection selected for the terminal A channel of at least one second access network device; the fifth information indicates a channel selected for the terminal and a corresponding second access network device in the at least one second access network device. The solution provided by the embodiment of the present application controls the second access network device and the terminal to perform channel selection through the first access network device, which can avoid interference between the second access network devices, thereby improving resource utilization of the entire heterogeneous network Rate.
下面结合应用实施例对本申请再作进一步详细的描述。The present application will be further described in detail below in conjunction with application examples.
应用实施例一Application Example 1
在本应用实施例中，异构网络包含RF AP、VLC AP1和VLC AP2。假设UE支持的信道称为M(包含至少一个信道)，VLC AP1支持的信道称为M1(包含至少一个信道)，VLC AP2支持的信道称为M2(包含至少一个信道)。In this application example, the heterogeneous network includes RF AP, VLC AP1 and VLC AP2. Assume that the channel supported by UE is called M (including at least one channel), the channel supported by VLC AP1 is called M1 (including at least one channel), and the channel supported by VLC AP2 is called M2 (including at least one channel).
本应用实施例可见光异构组网的信道选择方法，如图10所示，该方法包括以下步骤：The channel selection method of visible light heterogeneous networking in this application embodiment, as shown in FIG. 10 , the method includes the following steps:
步骤1001：终端将设备能力通过RF上行链路上报给RF AP；Step 1001: The terminal reports the device capability to the RF AP through the RF uplink;
这里，所述设备能力可以包括：信道聚合和保护信道的支持情况，承载在PUCCH、PRACH等上行物理信道或者上行RRC信令、上行MAC层信令上。Here, the device capability may include: channel aggregation and protection channel support, carried on uplink physical channels such as PUCCH and PRACH, or uplink RRC signaling and uplink MAC layer signaling.
步骤1002：VLC AP1将自身支持M1信道的能力上报给RF AP，VLC AP2将自身支持M2信道的能力上报给RF AP；Step 1002: VLC AP1 reports its ability to support the M1 channel to the RF AP, and VLC AP2 reports its ability to support the M2 channel to the RF AP;
步骤1003：RF AP收到终端、VLC AP1和VLC AP2发送的能力信息后，根据负载均衡、干扰协调等原则分别为VLC AP1和VLC AP2选择合适的与终端的共享信道，向终端通知VLCAP1的共享信道(称为K1，包含至少一个信道)和VLC AP2的共享信道(称为K2，包含至少一个信道)，并向VLC AP1通知对应的共享信道K1，向VLC AP2通知对应的共享信道K2；Step 1003: After receiving the capability information sent by the terminal, VLC AP1 and VLC AP2, the RF AP selects appropriate shared channels with the terminal for VLC AP1 and VLC AP2 respectively according to the principles of load balancing and interference coordination, and notifies the terminal of the shared channel of VLCAP1 channel (referred to as K1, comprising at least one channel) and a shared channel of VLC AP2 (referred to as K2, comprising at least one channel), and notifying the corresponding shared channel K1 to VLC AP1, and notifying the corresponding shared channel K2 to VLC AP2;
其中，K1＝M1∩M的子集，K2＝M2∩M的子集；M1∩M表示M1和M的交集；M2∩M表示M2和M的交集。Wherein, K1=subset of M1∩M, K2=subset of M2∩M; M1∩M represents the intersection of M1 and M; M2∩M represents the intersection of M2 and M.
RF AP向终端通知VLC AP1的共享信道K1和VLC AP2的共享信道K2的方式，包括：The way in which the RF AP notifies the terminal of the shared channel K1 of VLC AP1 and the shared channel K2 of VLC AP2 includes:
第一种情况，K1和K2相交，即二者有相同的信道。In the first case, K1 and K2 intersect, that is, both have the same channel.
通知方式一：RF AP通过RF下行分别指示VLC AP1的K1和VLC AP2的K2给终端，这样能够避免终端在所有信道上盲检测，从而达到节能的目的；Notification method 1: RF AP respectively instructs K1 of VLC AP1 and K2 of VLC AP2 to the terminal through RF downlink, which can prevent the terminal from blind detection on all channels, thereby achieving the purpose of energy saving;
通知方式二：RF AP通过RF下行指示K1∪K2个共享信道给终端，这样能够避免终端在所有信道盲检测，从而达到节能的目的，与通知方式一相比，该通知方式能够减少信令开销；K1∪K2表示K1和K2的并集。Notification method 2: RF AP instructs K1∪K2 shared channels to the terminal through RF downlink, which can avoid blind detection of all channels by the terminal, thereby achieving the purpose of energy saving. Compared with
第二种情况，K1和K2不相交，即二者没有相同的信道，RF AP通过RF下行指示K1∪K2给终端，这样能够避免终端在所有信道盲检测，从而达到节能的目的。In the second case, K1 and K2 are disjoint, that is, they do not have the same channel, and the RF AP instructs K1∪K2 to the terminal through RF downlink, which can prevent the terminal from blind detection on all channels, thereby achieving the purpose of energy saving.
步骤1004：VLC AP1收到通知后，在K1上发送信标，VLC AP2收到通知后，在K2上发送信标；Step 1004: VLC AP1 sends a beacon on K1 after receiving the notification, and VLC AP2 sends a beacon on K2 after receiving the notification;
步骤1005：终端收到通知后，测量WQI，并通过RF上行上报收到的K1和K2的WQI或者，上报K1∪K2的WQI；Step 1005: After receiving the notification, the terminal measures the WQI, and reports the received WQI of K1 and K2 through RF uplink or reports the WQI of K1∪K2;
具体地，根据RF AP发送通知的不同方式，终端的处理方式也不同，具体包括：Specifically, according to different ways in which the RF AP sends notifications, the processing methods of the terminal are also different, including:
第一种情况，K1和K2相交。In the first case, K1 and K2 intersect.
处理方式一：对应上述的通知方式一，终端分别检测VLC AP1的K1的WQI和VLC AP2的K2的WQI，并通过RF上行上报VLC AP1的K1的WQI和VLC AP2的K2的WQI；Processing method 1: Corresponding to the
处理方式二，对应上述的通知方式二，终端联合检测即联合测量)VLC AP1和VLCAP2的K1∪K2的WQI，并通过RF上行上报K1∪K2的WQI；这里，所述联合检测是指：不需要针对每个VLC AP分别作检测，示例性地，假设K1 K1是{1,2,3}，K2是{1,4,5}，则终端直接检测{1,2,3,4,5}的WQI，不需要针对每个VLC AP分别检测，即针对{1,2,3}检测WQI，针对{1,4,5}检测WQI，避免了信道1的重复检测。
第二种情况，K1和K2不相交。In the second case, K1 and K2 are disjoint.
终端联合检测VLC AP1和VLC AP2的K1∪K2的WQI，并通过RF上行上报K1∪K2的WQI。The terminal jointly detects the WQI of K1∪K2 of VLC AP1 and VLC AP2, and reports the WQI of K1∪K2 through RF uplink.
步骤1006：RF AP根据K1和K2的WQI或者K1∪K2的WQI后，分别为VLC AP1和VLC AP2选择最优信道，分别为Ω1和Ω2，向VLC AP1和VLC AP2通知选择的最优信道，并通过RF下行分别将Ω1和Ω指示给终端；Step 1006: RF AP selects the optimal channel for VLC AP1 and VLC AP2 respectively according to the WQI of K1 and K2 or the WQI of K1∪K2, respectively Ω1 and Ω2, and notifies VLC AP1 and VLC AP2 of the selected optimal channel, And respectively indicate Ω1 and Ω to the terminal through RF downlink;
步骤1007：VLC AP1和VLC AP2与终端在对应的最优信道上同时进行数据传输。Step 1007: VLC AP1 and VLC AP2 and the terminal perform data transmission on corresponding optimal channels at the same time.
示例性地，示例性地，假设M为{0,1,2,3,5}，M1为{0,1,2,3,4}，M2为{0,1,2,6}，则M1∩M为{0,1,2,3}，M2∩M为{0,1,2}，为了避免干扰，RF AP分别为VLC AP1和VLC AP2选择合适的共享信道，假设K1和K2不相交，VLC AP1的K1为{2,3}，VLC AP2的K2为{0,1}，分别通知VLC AP1和VCL AP2 K1和K2，RF AP通过RF下行指示K1∪K2为{0,1,2,3}给终端；VLC AP1在{2,3}信道上发信标，VLC AP2在{0,1}信道上发信标；终端测量{0,1,2,3}的WQI，并向RFAP上报{0,1,2,3}的WQI，RF AP为VLC AP1选择最优信道{3}，为VLC AP2选择最优信道{0}。Exemplarily, as an example, assuming that M is {0,1,2,3,5}, M1 is {0,1,2,3,4}, and M2 is {0,1,2,6}, then M1∩M is {0,1,2,3}, and M2∩M is {0,1,2}. In order to avoid interference, RF AP selects appropriate shared channels for VLC AP1 and VLC AP2 respectively. Assume that K1 and K2 are not Intersect, K1 of VLC AP1 is {2,3}, K2 of VLC AP2 is {0,1}, notify VLC AP1 and VCL AP2 of K1 and K2 respectively, and RF AP instructs K1∪K2 to be {0,1, 2,3} to the terminal; VLC AP1 sends a beacon on the {2,3} channel, and VLC AP2 sends a beacon on the {0,1} channel; the terminal measures the WQI of {0,1,2,3}, and Report the WQI of {0,1,2,3} to RFAP, RF AP selects the optimal channel {3} for VLC AP1, and selects the optimal channel {0} for VLC AP2.
本应用实施例中，RF AP根据VLC AP1和AP2以及终端的能力直接给两个VLC AP分配共享信道，从而根据共享信道的WQI为VLC AP1和VLC AP2分配信道，实现简单，易于实施。In this application example, the RF AP directly allocates the shared channel to the two VLC APs according to the capabilities of the VLC AP1 and AP2 and the terminal, so that the channel is allocated to the VLC AP1 and VLC AP2 according to the WQI of the shared channel, which is simple and easy to implement.
应用实施例二Application Example 2
在本应用实施例中，异构网络包含RF AP、VLC AP1和VLC AP2。假设UE支持的信道称为M(包含至少一个信道)，VLC AP1支持的信道称为M1(包含至少一个信道)，VLC AP2支持的信道称为M2(包含至少一个信道)。In this application example, the heterogeneous network includes RF AP, VLC AP1 and VLC AP2. Assume that the channel supported by UE is called M (including at least one channel), the channel supported by VLC AP1 is called M1 (including at least one channel), and the channel supported by VLC AP2 is called M2 (including at least one channel).
本应用实施例可见光异构组网的信道选择方法，如图11所示，包括以下步骤：The channel selection method of visible light heterogeneous networking in this application embodiment, as shown in Figure 11, includes the following steps:
步骤1101：VLC AP1时刻1(可以称为第一时刻)在M1上发送信标，VLC AP2时刻2(可以称为第二时刻)在M2上发送信标；Step 1101: VLC AP1 sends a beacon on M1 at time 1 (may be called the first time), and VLC AP2 sends a beacon on M2 at time 2 (may be called the second time);
其中，时刻1和时刻2不同，以避免VLC AP1和VLC AP2产生冲突。Wherein,
步骤1102：终端测量M1的WQI，并测量M2的WQI，通过RF上行上报收到的M1和M2信道的WQI；Step 1102: The terminal measures the WQI of M1 and the WQI of M2, and reports the received WQIs of M1 and M2 channels through RF uplink;
这里，所述终端可以通过盲检方式来测量M1和M2的WQI，也可以通过RF下行的方式指示M1和M2。Here, the terminal may measure the WQIs of M1 and M2 through blind detection, and may also indicate M1 and M2 through RF downlink.
步骤1103：RF AP根据VLC AP1和VLC AP2的WQI分别为VLC AP1和VLC AP2选择最优信道分别为Ω1和Ω2，向VLC AP1和VLC AP2通知选择的最优信道，并通过RF下行分别将Ω1和Ω指示给终端；Step 1103: RF AP selects the optimal channels Ω1 and Ω2 for VLC AP1 and VLC AP2 respectively according to the WQIs of VLC AP1 and VLC AP2, and notifies VLC AP1 and VLC AP2 of the selected optimal channels, and downlinks Ω1 through RF and Ω are indicated to the terminal;
这里，RF AP可以根据WQI，并结合负载均衡、干扰协调等原则为VLC AP1和VLC AP2选择最优信道。Here, the RF AP can select the optimal channel for the VLC AP1 and the VLC AP2 according to the WQI and in combination with principles such as load balancing and interference coordination.
步骤1104：VLC AP1和VLC AP2与终端在对应的最优信道上同时进行数据传输。Step 1104: VLC AP1 and VLC AP2 and the terminal perform data transmission on corresponding optimal channels at the same time.
示例性地，假设M为{0,1,2,3,5}，M1为{0,1,2,3,4}，M2为{0,1,2,6}，VLC AP1时刻1在{0,1,2,3,4}信道上发送信标，VLC AP2时刻2在{0,1,2,6}上发送信标；终端通过RF上行分别上报收到的{0,1,2,3,4}和{0,1,2,6}的WQI；这里，终端上报的信道的WQI为大于或等于门限(可以根据需要设置)的WQI；假设VLC AP1对应的WQI的测量结果为{0,1,3}，VLC AP2对应的WQI的测量结果为{1,2}，RF AP为VLC AP1选择最优信道{0，3}，为VLC AP2选择最优信道{1,2}。本应用实施例中，终端直接分时监听VLC AP1和VLC AP2信道，从而得到VLC AP1和AP2信道的WQI，使得RF AP直接根据VLC AP1和AP2信道的WQI为VLC AP1和VLC AP2选择信道，省去了能力交互的步骤，避免了分配的信道质量较差的情况导致的异构网络的性能下降的问题。For example, suppose M is {0,1,2,3,5}, M1 is {0,1,2,3,4}, M2 is {0,1,2,6},
从上面的描述可以看出，本申请是实施例提供的方案，由RF AP控制VLC AP进行信道选择流程，可以避免VLC AP之间的干扰，从而提高整个异构网络的资源利用率。It can be seen from the above description that this application is a solution provided by the embodiment, and the RF AP controls the VLC AP to perform the channel selection process, which can avoid interference between VLC APs, thereby improving resource utilization of the entire heterogeneous network.
为了实现本申请实施例的终端侧的方法，本申请实施例还提供了一种信道选择装置，设置在终端上，如图12所示，该装置包括：In order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a channel selection device, which is set on the terminal, as shown in Figure 12, the device includes:
第一上报单元1201，用于向第一接入网设备上报第一信息；所述第一信息包含终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；The
第一接收单元1202，用于接收所述第一接入网设备发送的第二信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道。The
其中，在一实施例中，所述第一接收单元1202，还用于：Wherein, in an embodiment, the
接收所述第一接入网设备发送的第三信息；所述第三信息指示所述终端待监听的至少一个第二接入网设备的信道。receiving third information sent by the first access network device; the third information indicates at least one channel of the second access network device to be monitored by the terminal.
在一实施例中，该装置还可以包括：In one embodiment, the device may also include:
第一传输单元，用于与至少一个第二接入网设备在选择的最优信道进行通信。The first transmission unit is configured to communicate with at least one second access network device on the selected optimal channel.
实际应用时，所述第一上报单元1201和第一传输单元可由信道选择装置中的处理器结合通信接口实现，所述第一接收单元1202可由信道选择装置中的通信接口实现。In practical applications, the
为了实现本申请实施例第一接入网设备侧的方法，本申请实施例还提供了一种信道选择装置，设置在第一接入网设备上，如图13所示，该装置包括：In order to implement the method on the side of the first access network device in the embodiment of the present application, the embodiment of the present application also provides a channel selection device, which is set on the first access network device, as shown in FIG. 13 , the device includes:
第二接收单元1301，接收终端上报的第一信息和/或接收至少一个第二接入网设备上报的第四信息；所述第一信息表征终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；The
选择单元1302，用于利用第一信息和/或第四信息，为所述终端选择与至少一个第二接入网设备的信道；A selecting
第一发送单元1303，用于向所述终端发送第二信息，并向所述至少一个第二接入网设备发送第五信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道；所述第五信息指示为终端选择的与所述至少一个第二接入网设备中相应第二接入网设备的信道。The
其中，在一实施例中，所述第一发送单元1303，还用于向所述终端发送第三信息；所述第三信息指示所述终端待监听的至少一个第二接入网设备的信道。Wherein, in an embodiment, the
在一实施例中，所述第一发送单元1303，还用于向第二接入网设备发送第五信息，所述第五信息指示为终端选择与所述第二接入网设备的信道。In an embodiment, the
在一实施例中，所述第一发送单元1303，还用于向第二接入网设备发送第六信息，所述第六信息指示终端与所述第二接入网设备的共享信道。In an embodiment, the
实际应用时，所述第二接收单元1301和第一发送单元1303可由信道选择装置中的通信接口实现，所述选择单元1302可由信道装置中的处理器结合通信接口实现。In practical application, the
为了实现本申请实施例第二接入网设备侧的方法，本申请实施例还提供了一种信道选择装置，设置在第二接入网设备上，如图14所示，该装置包括：In order to implement the method on the side of the second access network device in the embodiment of the present application, the embodiment of the present application also provides a channel selection device, which is set on the second access network device, as shown in FIG. 14 , the device includes:
第二上报单元1401，用于向第一接入网设备发送第四信息；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；The
第三接收单元1402，用于接收所述第一接入网设备发送的第五信息，所述第五信息指示为终端选择的与所述第二接入网设备的信道。The
其中，在一实施例中，该装置还可以包括：Wherein, in an embodiment, the device may also include:
第二发送单元，用于在所述第二接入网设备支持的信道上发送信标，或者在终端与所述第二接入网设备的共享信道上发送信标。The second sending unit is configured to send a beacon on a channel supported by the second access network device, or send a beacon on a shared channel between the terminal and the second access network device.
在一实施例中，所述第三接收单元1402，还用于接收所述第一接入网设备发送的第六信息，所述第六信息指示终端与所述第二接入网设备的共享信道。In an embodiment, the
在一实施例中，该装置还可以包括：In one embodiment, the device may also include:
第二传输单元，用于与终端在选择的最优信道进行通信。The second transmission unit is configured to communicate with the terminal on the selected optimal channel.
实际应用时，所述第二上报单元1401和第二传输单元可由信道选择装置中的处理器结合通信接口实现，所述第三接收单元1402和第二发送单元可由信道选择装置中的通信接口实现。In actual application, the
需要说明的是：上述实施例提供的信道选择装置在进行信道选择时，仅以上述各程序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处理分配由不同的程序模块完成，即将装置的内部结构划分成不同的程序模块，以完成以上描述的全部或者部分处理。另外，上述实施例提供的信道选择装置与信道选择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 channel selection device provided in the above-mentioned embodiment performs channel selection, the division of the above-mentioned program modules is used as an example for illustration. In practical applications, the above-mentioned processing allocation can be completed by different program modules according to needs. That is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the channel selection device and the channel selection method embodiments provided in the above embodiments belong to the same idea, and the specific implementation process thereof is detailed in the method embodiments, and will not be repeated here.
基于上述程序模块的硬件实现，且为了实现本申请实施例终端侧的方法，本申请实施例还提供了一种终端，如图15所示，该终端1500包括：Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a terminal, as shown in FIG. 15 , the terminal 1500 includes:
第一通信接口1501，能够与第一接入网设备和第二接入网设备进行信息交互；The
第一处理器1502，与所述第一通信接口1501连接，以实现与第一接入网设备和第二接入网设备进行信息交互，用于运行计算机程序时，执行上述终端侧一个或多个技术方案提供的方法；The
第一存储器1503，所述计算机程序存储在第一存储器1503上。A
具体地，所述第一通信接口1501，用于向第一接入网设备上报第一信息；所述第一信息包含终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；以及，Specifically, the
接收所述第一接入网设备发送的第二信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道。Receive second information sent by the first access network device; the second information indicates a channel selected for the terminal with at least one second access network device.
其中，在一实施例中，所述第一通信接口1501，还用于：Wherein, in an embodiment, the
接收所述第一接入网设备发送的第三信息；所述第三信息指示所述终端待监听的至少一个第二接入网设备的信道。receiving third information sent by the first access network device; the third information indicates at least one channel of the second access network device to be monitored by the terminal.
在一实施例中，第一通信接口1501，还用于与至少一个第二接入网设备在选择的最优信道进行通信。In an embodiment, the
需要说明的是：第一处理器1502及第一通信接口1501的具体处理过程可参照上述方法理解。It should be noted that the specific processing procedures of the
当然，实际应用时，终端1500中的各个组件通过总线系统1504耦合在一起。可理解，总线系统1504用于实现这些组件之间的连接通信。总线系统1504除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图15中将各种总线都标为总线系统1504。Of course, in actual application, various components in the terminal 1500 are coupled together through the
本申请实施例中的第一存储器1503用于存储各种类型的数据以支持终端1500的操作。这些数据的示例包括：用于在终端1500上操作的任何计算机程序。The
上述本申请实施例揭示的方法可以应用于所述第一处理器1502中，或者由所述第一处理器1502实现。所述第一处理器1502可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过所述第一处理器1502中的硬件的集成逻辑电路或者软件形式的指令完成。上述的所述第一处理器1502可以是通用处理器、数字信号处理器(DSP，Digital Signal Processor)，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。所述第一处理器1502可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于第一存储器1503，所述第一处理器1502读取第一存储器1503中的信息，结合其硬件完成前述方法的步骤。The methods disclosed in the foregoing embodiments of the present application may be applied to the
在示例性实施例中，终端1500可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，ProgrammableLogic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或者其他电子元件实现，用于执行前述方法。In an exemplary embodiment, the terminal 1500 may be implemented by one or more Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, ProgrammableLogic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), field-programmable gate array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components to achieve , used to execute the aforementioned method.
基于上述程序模块的硬件实现，且为了实现本申请实施例终端侧的方法，本申请实施例还提供了一种第一接入网设备，如图16所示，该第一接入网设备1600包括：Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a first access network device, as shown in FIG. 16 , the first
第二通信接口1601，能够与终端和第二接入网设备进行信息交互；The
第二处理器1602，与所述第二通信接口1601连接，以实现与终端和第二接入网设备进行信息交互，用于运行计算机程序时，执行上述第一接入网设备侧一个或多个技术方案提供的方法；The
第二存储器1603，所述计算机程序存储在第二存储器1603上。A
具体地，所述第二通信接口1601，用于接收终端上报的第一信息和/或接收至少一个第二接入网设备上报的第四信息；所述第一信息表征终端第二方式的能力和/或至少一个第二接入网设备信道的信道质量指示；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向所述终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；以及向所述终端发送第二信息，并向所述至少一个第二接入网设备发送第五信息；所述第二信息指示为所述终端选择的与至少一个第二接入网设备的信道；所述第五信息指示为终端选择的与所述至少一个第二接入网设备中相应第二接入网设备的信道；Specifically, the
所述第二处理器1602，用于利用第一信息和/或第四信息，为所述终端选择与至少一个第二接入网设备的信道。The
其中，在一实施例中，所述第二通信接口1601，还用于向所述终端发送第三信息；所述第三信息指示所述终端待监听的至少一个第二接入网设备的信道。Wherein, in an embodiment, the
在一实施例中，所述第二通信接口1601，还用于向第二接入网设备发送第五信息，所述第五信息指示为终端选择与所述第二接入网设备的信道。In an embodiment, the
在一实施例中，所述第二通信接口1601，还用于向第二接入网设备发送第六信息，所述第六信息指示终端与所述第二接入网设备的共享信道。In an embodiment, the
需要说明的是：所述第二处理器1602及第二通信接口1601的具体处理过程可参照上述方法理解。It should be noted that: the specific processing process of the
当然，实际应用时，第一接入网设备1600中的各个组件通过总线系统1604耦合在一起。可理解，总线系统1604用于实现这些组件之间的连接通信。总线系统1604除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图16中将各种总线都标为总线系统1604。Of course, in actual application, various components in the first
本申请实施例中的第二存储器1603用于存储各种类型的数据以支持第一接入网设备1600操作。这些数据的示例包括：用于在第一接入网设备1600上操作的任何计算机程序。The
上述本申请实施例揭示的方法可以应用于所述第二处理器1602中，或者由所述第二处理器1602实现。所述第二处理器1602可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过所述第二处理器1602中的硬件的集成逻辑电路或者软件形式的指令完成。上述的所述第二处理器1602可以是通用处理器、DSP，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。所述第二处理器1602可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于第二存储器1603，所述第二处理器1602读取第二存储器1603中的信息，结合其硬件完成前述方法的步骤。The methods disclosed in the foregoing embodiments of the present application may be applied to the
在示例性实施例中，第一接入网设备1600可以被一个或多个ASIC、DSP、PLD、CPLD、FPGA、通用处理器、控制器、MCU、Microprocessor、或其他电子元件实现，用于执行前述方法。In an exemplary embodiment, the first
基于上述程序模块的硬件实现，且为了实现本申请实施例第二接入网设备侧的方法，本申请实施例还提供了一种第二接入网设备，如图17所示，该第二接入网设备1700包括：Based on the hardware implementation of the above program modules, and in order to implement the method on the second access network device side of the embodiment of the present application, the embodiment of the present application also provides a second access network device, as shown in FIG. 17 , the second
第三通信接口1701，能够与第一接入网设备和终端进行信息交互；The
第三处理器1702，与所述第三通信接口1701连接，以实现与第一接入网设备和终端进行信息交互，用于运行计算机程序时，执行上述第二接入网设备侧一个或多个技术方案提供的方法；The
第三存储器1703，所述计算机程序存储在第三存储器1703上。A
具体地，所述第三通信接口1701，用于向第一接入网设备发送第四信息；所述第四信息表征第二接入网设备的能力；所述第一接入网设备能够向终端提供第一方式的接入；所述第二接入网设备能够向所述终端提供第二方式的接入；所述第一方式与第二方式不同；以及，Specifically, the
接收所述第一接入网设备发送的第五信息，所述第五信息指示为终端选择的与所述第二接入网设备的信道。Receive fifth information sent by the first access network device, where the fifth information indicates the channel selected for the terminal with the second access network device.
其中，在一实施例中，所述第三通信接口1701，用于在所述第二接入网设备支持的信道上发送信标，或者在终端与所述第二接入网设备的共享信道上发送信标。Wherein, in an embodiment, the
在一实施例中，所述第三通信接口1701，还用于接收所述第一接入网设备发送的第六信息，所述第六信息指示终端与所述第二接入网设备的共享信道。In an embodiment, the
在一实施例中，所述第三处理器1702，用于通过所述第三通信接口1701与终端在选择的最优信道进行通信。In an embodiment, the
当然，实际应用时，第二接入网设备1700中的各个组件通过总线系统1704耦合在一起。可理解，总线系统1704用于实现这些组件之间的连接通信。总线系统1704除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图17中将各种总线都标为总线系统1704。Certainly, in practical applications, various components in the second
本申请实施例中的第三存储器1703用于存储各种类型的数据以支持第二接入网设备1700操作。这些数据的示例包括：用于在第二接入网设备1700上操作的任何计算机程序。The
上述本申请实施例揭示的方法可以应用于所述第三处理器1702中，或者由所述第三处理器1702实现。所述第三处理器1702可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过所述第三处理器1702中的硬件的集成逻辑电路或者软件形式的指令完成。上述的所述第三处理器1702可以是通用处理器、DSP，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。所述第三处理器1702可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于第三存储器1703，所述第三处理器1702读取第三存储器1703中的信息，结合其硬件完成前述方法的步骤。The methods disclosed in the foregoing embodiments of the present application may be applied to the
在示例性实施例中，第二接入网设备1700可以被一个或多个ASIC、DSP、PLD、CPLD、FPGA、通用处理器、控制器、MCU、Microprocessor、或其他电子元件实现，用于执行前述方法。In an exemplary embodiment, the second
可以理解，本申请实施例的存储器(第一存储器1503、第二存储器1603、第三存储器1703)可以是易失性存储器或者非易失性存储器，也可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，ErasableProgrammable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，ElectricallyErasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagneticrandom access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，SynchronousStatic Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random AccessMemory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random AccessMemory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM，Double Data RateSynchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本申请实施例描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。It can be understood that the memory (the
为了实现本申请实施例提供的方法，本申请实施例还提供了一种信道选择系统，如图18所示，该系统包括：第一接入网设备1801及至少一个第二接入网设备1802及终端1803。In order to implement the method provided by the embodiment of the present application, the embodiment of the present application also provides a channel selection system, as shown in FIG. 18 , the system includes: a first
这里，需要说明的是：第一接入网设备1801、第二接入网设备1802及终端1803的具体处理过程已在上文详述，这里不再赘述。Here, it should be noted that: the specific processing procedures of the first
在示例性实施例中，本申请实施例还提供了一种存储介质，即计算机存储介质，具体为计算机可读存储介质，例如包括存储计算机程序的第一存储器1503，上述计算机程序可由终端1500的第一处理器1502执行，以完成前述终端侧方法所述步骤，再比如包括存储计算机程序的第二存储器1603，上述计算机程序可由第第一接入网设备1600的第二处理器1602执行，以完成前述第一接入网设备侧方法所述步骤，再比如包括存储计算机程序的第三存储器1703，上述计算机程序可由第二接入网设备1700的第三处理器1702执行，以完成前述第二接入网设备侧方法所述步骤。计算机可读存储介质可以是FRAM、ROM、PROM、EPROM、EEPROM、Flash Memory、磁表面存储器、光盘、或CD-ROM等存储器。In an exemplary embodiment, the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a
需要说明的是：“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。It should be noted that: "first", "second", etc. are used to distinguish similar objects, and not necessarily used to describe a specific order or sequence.
以上所述，仅为本申请的较佳实施例而已，并非用于限定本申请的保护范围。The above descriptions are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application.
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