技术领域technical field
本发明涉及无线通信系统中利用非授权频谱通信的方案，特别是涉及基于LTE(LongTermEvolution，长期演进)的针对非授权频谱(UnlicensedSpectrum)的基站间协同的方法和装置。The present invention relates to a communication scheme using unlicensed spectrum in a wireless communication system, in particular to a method and device for cooperating between base stations for unlicensed spectrum (Unlicensed Spectrum) based on LTE (Long Term Evolution, Long Term Evolution).
背景技术Background technique
传统的3GPP(3rdGenerationPartnerProject，第三代合作伙伴项目)LTE系统中，数据传输只能发生在授权频谱上，然而随着业务量的急剧增大，尤其在一些城市地区，授权频谱可能难以满足业务量的需求。3GPPRAN的62次全会讨论了一个新的研究课题，即非授权频谱综合的研究(RP-132085)，主要目的是研究利用在非授权频谱上的LTE的非独立(Non-standalone)部署，所谓非独立是指在非授权频谱上的通信要和授权频谱上的服务小区相关联。一个直观的方法是尽可能重用现有系统中的CA(CarrierAggregation，载波聚合)的概念，即部署在授权频谱上的服务小区作为PCC(PrimaryComponentCarrier，主载波)，部署在非授权频谱上的服务小区作为SCC(SecondaryComponentCarrier，辅载波)。在RAN#64次全会(研讨会)上，非授权频谱上的通信被统一命名为LAA(LicenseAssistedAccess，授权频谱辅助接入)。In the traditional 3GPP (3rdGenerationPartnerProject, Third Generation Partnership Project) LTE system, data transmission can only occur on the licensed spectrum. However, with the rapid increase of business volume, especially in some urban areas, the licensed spectrum may be difficult to meet the business volume. demand. The 62nd plenary meeting of 3GPPRAN discussed a new research topic, that is, research on unlicensed spectrum synthesis (RP-132085), the main purpose of which is to study the non-standalone (Non-standalone) deployment of LTE using unlicensed spectrum, the so-called non-standalone Independence means that the communication on the unlicensed spectrum must be associated with the serving cell on the licensed spectrum. An intuitive method is to reuse the concept of CA (CarrierAggregation, Carrier Aggregation) in the existing system as much as possible, that is, the serving cell deployed on the licensed spectrum is used as a PCC (Primary Component Carrier, main carrier), and the serving cell deployed on the unlicensed spectrum As an SCC (Secondary Component Carrier, secondary carrier). At the RAN#64 plenary meeting (seminar), the communication on the unlicensed spectrum was uniformly named LAA (LicenseAssisted Access, licensed spectrum assisted access).
来自不同运营商的多个相邻基站可能部署于相同的频谱上，进而产生严重的同频干扰，诸如LBT(ListenBeforeTalk，先侦听后发送)等技术能够一定程度的减轻基站间干扰，LBT即基站或UE(UserEquipment，用户设备)在发送信号之前首先监听非授权频谱上的接收功率，如果根据所述接收功率确定在所述非授权频谱上没有干扰源，则在所述非授权频谱上发送信号，否则不发送信号。Multiple adjacent base stations from different operators may be deployed on the same frequency spectrum, resulting in serious co-channel interference. Technologies such as LBT (ListenBeforeTalk, listening before sending) can reduce the interference between base stations to a certain extent. LBT is The base station or UE (UserEquipment, user equipment) first monitors the received power on the unlicensed spectrum before sending a signal, and if it is determined according to the received power that there is no interference source on the unlicensed spectrum, then transmit on the unlicensed spectrum signal, otherwise no signal is sent.
LBT可以被看成是一种基站之间的弱协同，然而当LAA基站部署的较密集时，单纯的LBT无法有效避免干扰，例如当多个基站在一个时频资源块上监听接收功率并确定不存在干扰源时，所述多个基站可能同时发送信号进而产生较强的基站间干扰。LBT can be regarded as a kind of weak coordination between base stations. However, when LAA base stations are deployed densely, pure LBT cannot effectively avoid interference. For example, when multiple base stations monitor the received power on a time-frequency resource block and determine When there is no interference source, the multiple base stations may transmit signals at the same time to generate strong inter-base station interference.
针对上述问题，本发明公开了一种蜂窝网中的LAA通信方法和装置，即一种较强的基站协同方案。In view of the above problems, the present invention discloses an LAA communication method and device in a cellular network, that is, a strong base station coordination scheme.
发明内容Contents of the invention
本发明公开了一种基站中的方法，其特征在于，包括如下步骤：The invention discloses a method in a base station, which is characterized in that it includes the following steps:
-步骤A.接收第一回传信令确定第一时频资源和第二时频资源- Step A. Receiving the first return signaling to determine the first time-frequency resource and the second time-frequency resource
-步骤B.在第二时频资源上发送第二回传信令。- Step B. Sending the second backhaul signaling on the second time-frequency resource.
其中，第一时频资源和第二时频资源均位于第一载波，第一载波部署于非授权频谱，第二回传信令包括{特征序列，信息比特}中的一种或者两种，所述基站在第一时频资源保持零发送功率。Wherein, both the first time-frequency resource and the second time-frequency resource are located on the first carrier, the first carrier is deployed on an unlicensed spectrum, and the second backhaul signaling includes one or both of {characteristic sequence, information bit}, The base station maintains zero transmit power in the first time-frequency resource.
所述回传信令是空口信令。所述信息比特包括多个比特。作为一个实施例，第一回传信令是用于指示时间同步的同步序列，第一回传信令隐式指示第一时频资源和第二时频资源，即第一时频资源和第二时频资源的位置分别和同步序列的时频位置存在映射关系。作为一个实施例，第一回传信令是信息比特，第一回传信令显式指示第一时频资源和第二时频资源。The return signaling is air interface signaling. The information bits include a plurality of bits. As an embodiment, the first backhaul signaling is a synchronization sequence used to indicate time synchronization, and the first backhaul signaling implicitly indicates the first time-frequency resource and the second time-frequency resource, that is, the first time-frequency resource and the second time-frequency resource. There is a mapping relationship between the positions of the two time-frequency resources and the time-frequency positions of the synchronization sequence. As an embodiment, the first feedback signaling is an information bit, and the first feedback signaling explicitly indicates the first time-frequency resource and the second time-frequency resource.
作为一个实施例，所述步骤B还包括如下步骤：As an embodiment, the step B also includes the following steps:
-步骤B1.在第一时频资源监听接收功率。- Step B1. Monitoring received power at the first time-frequency resource.
其中，第二回传信令指示发送请求即所述基站请求占用时频资源发送无线信号，所述接收功率低于特定阈值，所述特定阈值是预确定的或者是所述基站自行确定的或者是由第一回传信令的发送基站配置的。Wherein, the second backhaul signaling indicates a sending request, that is, the base station requests to occupy time-frequency resources to send wireless signals, and the received power is lower than a specific threshold, and the specific threshold is predetermined or determined by the base station itself, or is configured by the sending base station of the first backhaul signaling.
上述实施例中，所述基站载第一时频资源中监听到的接收功率来自所述基站所属的基站簇之外的发射机，即所述基站簇中的基站在第一时频资源都保持零发送功率，所述基站簇是同步的，相应的同步源是所述基站簇的头基站，其他基站是成员基站。In the above embodiment, the received power monitored by the base station in the first time-frequency resource comes from a transmitter other than the base station cluster to which the base station belongs, that is, the base stations in the base station cluster maintain Zero transmit power, the base station cluster is synchronized, the corresponding synchronization source is the head base station of the base station cluster, and other base stations are member base stations.
作为一个实施例，所述特征序列是ZC(ZadOff-Chu)序列。作为一个实施例，所述特征序列示伪随机序列。As an embodiment, the characteristic sequence is a ZC (ZadOff-Chu) sequence. As an embodiment, the characteristic sequence is a pseudo-random sequence.
作为一个实施例，第一回传信令和第二回传信令均在第一载波上传输。As an embodiment, both the first backhaul signaling and the second backhaul signaling are transmitted on the first carrier.
作为一个实施例，第一时频资源和第二时频资源都是周期性出现的As an embodiment, both the first time-frequency resource and the second time-frequency resource appear periodically
具体的，根据本发明的一个方面，其特征在于，还包括如下步骤：Specifically, according to one aspect of the present invention, it is characterized in that it also includes the following steps:
-步骤C.接收第三回传信令确定在第一载波上进行发送- Step C. Receive the third backhaul signaling and determine to send on the first carrier
-步骤D.在第一载波上的第三时频资源上发送下行无线信号。- Step D. Sending a downlink wireless signal on the third time-frequency resource on the first carrier.
作为一个实施例，第三回传信令显示配置第三时频资源。作为一个实施例，第三时频资源是由第一回传信令隐式指示的。作为一个实施例，第三回传信令包括多个基站ID(Identifier，识别号)，第三时频资源由所述基站对应的基站ID在第三回传信令中的位置确定，所述基站ID是整数。As an embodiment, the third backhaul signaling indicates configuration of the third time-frequency resource. As an embodiment, the third time-frequency resource is implicitly indicated by the first backhaul signaling. As an embodiment, the third backhaul signaling includes multiple base station IDs (Identifiers, identification numbers), the third time-frequency resource is determined by the position of the base station ID corresponding to the base station in the third backhaul signaling, and the Base station IDs are integers.
作为一个实施例，所述步骤D还包括如下步骤：As an embodiment, the step D also includes the following steps:
-步骤D1.在第一时频资源监听接收功率。- Step D1. Monitoring received power at the first time-frequency resource.
其中，所述接收功率低于特定阈值，所述特定阈值是预确定的或者是所述基站自行确定的或者是由第一回传信令的发送基站配置的。Wherein, the received power is lower than a specific threshold, and the specific threshold is predetermined or determined by the base station itself or configured by the base station sending the first backhaul signaling.
作为一个实施例，第三回传信令均在第一载波上传输。As an embodiment, the third backhaul signaling is all transmitted on the first carrier.
具体的，根据本发明的一个方面，其特征在于，所述特征序列是可选序列池中的一个，所述特征序列在所述可选序列池中的索引是以下之一：Specifically, according to one aspect of the present invention, it is characterized in that the feature sequence is one of the optional sequence pools, and the index of the feature sequence in the optional sequence pool is one of the following:
-.选项一：由所述基站实时随机选择的-.Option 1: Randomly selected by the base station in real time
-.选项二：由第一回传信令的发送基站配置的。-.Option 2: configured by the sending base station of the first return signaling.
具体的，根据本发明的一个方面，其特征在于，第一回传信令是广播信令，第一回传信令的接收基站在第一时频资源中保持零发送功率，第二时频资源由第一回传信令的接收基站码分复用。Specifically, according to one aspect of the present invention, it is characterized in that the first backhaul signaling is broadcast signaling, the receiving base station of the first backhaul signaling maintains zero transmission power in the first time-frequency resource, and the second time-frequency resource The resources are code-division multiplexed by the receiving base station of the first backhaul signaling.
作为一个实施例，第一回传信令的接收基站中有发送需求的基站都在第二时频资源中发送回传信令用于指示各自的发送请求。As an embodiment, among the base stations receiving the first backhaul signaling, the base stations that have transmission requirements all send the backhaul signaling in the second time-frequency resource to indicate their respective sending requests.
本发明公开了一种基站中的方法，其特征在于，包括如下步骤：The invention discloses a method in a base station, which is characterized in that it includes the following steps:
-步骤A.发送第一回传信令指示第一时频资源和第二时频资源- Step A. Sending the first return signaling to indicate the first time-frequency resource and the second time-frequency resource
-步骤B.在第二时频资源上接收目标信令集合，所述目标信令集合包括K个目标信令，其中1个目标信令是第二回传信令，所述K是正整数。- Step B. Receive a target signaling set on the second time-frequency resource, the target signaling set includes K target signalings, one of which is the second return signaling, and K is a positive integer.
其中，第一时频资源和第二时频资源均位于第一载波，第一载波部署于非授权频谱，第二回传信令包括{特征序列，信息比特}中的一种或者两种，所述基站在第一时频资源保持零发送功率。Wherein, both the first time-frequency resource and the second time-frequency resource are located on the first carrier, the first carrier is deployed on an unlicensed spectrum, and the second backhaul signaling includes one or both of {characteristic sequence, information bit}, The base station maintains zero transmit power in the first time-frequency resource.
上述方法中，所述基站扮演了一个基站簇内的头基站角色，除了作为同步源，所述基站还配置所述基站簇中用于接收功率侦听的时频资源以及用于请求发送信号的时频资源，并通知所述基站簇内的成员基站发送无线信号。上述方法避免了所述基站簇内的多个基站发送的无线信号相冲突的问题。In the above method, the base station plays the role of the head base station in a base station cluster. In addition to being a synchronization source, the base station also configures time-frequency resources for receiving power monitoring in the base station cluster and time-frequency resources for requesting to send signals. Time-frequency resources, and notify the member base stations in the base station cluster to send wireless signals. The above method avoids the problem of collision of wireless signals sent by multiple base stations in the base station cluster.
所述K个目标信令由K个不同的基站发送。作为一个实施例，所述K是1。The K target signaling is sent by K different base stations. As an example, the K is 1.
作为一个实施例，第一回传信令是用于指示时间同步的同步序列，第一回传信令隐式指示第一时频资源和第二时频资源，即第一时频资源和第二时频资源的位置分别和同步序列的时频位置存在映射关系。作为一个实施例，第一回传信令是信息比特，第一回传信令显式指示第一时频资源和第二时频资源。As an embodiment, the first backhaul signaling is a synchronization sequence used to indicate time synchronization, and the first backhaul signaling implicitly indicates the first time-frequency resource and the second time-frequency resource, that is, the first time-frequency resource and the second time-frequency resource. There is a mapping relationship between the positions of the two time-frequency resources and the time-frequency positions of the synchronization sequence. As an embodiment, the first feedback signaling is an information bit, and the first feedback signaling explicitly indicates the first time-frequency resource and the second time-frequency resource.
作为一个实施例，第二回传信令指示发送请求即第二回传信令的发送基站请求占用时频资源发送无线信号，所述接收功率低于特定阈值，所述特定阈值是预确定的或者是所述基站自行确定的或者是由第一回传信令的发送基站配置的。As an embodiment, the second backhaul signaling indicates the transmission request, that is, the sending base station of the second backhaul signaling requests to occupy time-frequency resources to send wireless signals, and the received power is lower than a specific threshold, and the specific threshold is predetermined Either it is determined by the base station itself or it is configured by the base station sending the first return signaling.
作为一个实施例，所述特征序列是ZC序列。作为一个实施例，所述特征序列示伪随机序列。As an embodiment, the characteristic sequence is a ZC sequence. As an embodiment, the characteristic sequence is a pseudo-random sequence.
具体的，根据本发明的一个方面，其特征在于，还包括如下步骤：Specifically, according to one aspect of the present invention, it is characterized in that it also includes the following steps:
-步骤C.发送第三回传信令指示目标基站组在第一载波上进行发送，所述目标基站组中至少包括第二回传信令的发送基站。- Step C. Sending the third backhaul signaling to instruct the target base station group to transmit on the first carrier, the target base station group including at least the sending base station of the second backhaul signaling.
作为一个实施例，所述目标基站组中还包括第一回传信令的发送基站。As an embodiment, the target base station group further includes a base station sending the first backhaul signaling.
具体的，根据本发明的一个方面，其特征在于，所述特征序列是可选序列池中的一个，所述特征序列在所述可选序列池中的索引是以下之一：Specifically, according to one aspect of the present invention, it is characterized in that the feature sequence is one of the optional sequence pools, and the index of the feature sequence in the optional sequence pool is one of the following:
-.选项一：由第二回传信令的发送基站实时随机选择的-.Option 1: Randomly selected by the base station sending the second return signaling in real time
-.选项二：由所述基站配置的。-. Option two: configured by the base station.
所述步骤C要满足对不同基站的公平调度。The step C should satisfy the fair scheduling of different base stations.
作为一个实施例，所述特征序列在所述可选序列池中的索引是所述选项一，所述目标基站组包括所述目标信令集合中的所有目标信令的发送基站。As an embodiment, the index of the characteristic sequence in the optional sequence pool is the option one, and the target base station group includes all target signaling sending base stations in the target signaling set.
作为一个实施例，所述特征序列在所述可选序列池中的索引是所述选项一，所述目标基站组包括所述目标信令集合中的所有目标信令的发送基站以及第一回传信令的发送基站。As an embodiment, the index of the characteristic sequence in the optional sequence pool is the option one, and the target base station group includes all target signaling base stations in the target signaling set and the first round Sending base station for signaling.
作为一个实施例，所述目标基站组仅包括一个基站，所述特征序列在所述可选序列池中的索引是所述选项二，第二回传信令对应的所述特征序列的所述索引是所述目标信令集合中的目标信令对应的索引中的最小值。As an embodiment, the target base station group includes only one base station, the index of the signature sequence in the optional sequence pool is the option two, and the second return signaling corresponds to the signature sequence of the signature sequence. The index is the minimum value among the indexes corresponding to the target signaling in the target signaling set.
作为一个实施例，所述目标基站组仅包括一个基站，所述特征序列在所述可选序列池中的索引是所述选项二，第二回传信令对应的所述特征序列的所述索引是所述目标信令集合中的目标信令对应的索引以及第一回传信令的发送基站实时随机选择的特征序列的索引中的最小值。As an embodiment, the target base station group includes only one base station, the index of the signature sequence in the optional sequence pool is the option two, and the second return signaling corresponds to the signature sequence of the signature sequence. The index is the minimum value of the index corresponding to the target signaling in the target signaling set and the index of the characteristic sequence randomly selected by the sending base station of the first backhaul signaling in real time.
具体的，根据本发明的一个方面，其特征在于，第一回传信令是广播信令，第一回传信令的接收基站在第一时频资源中保持零发送功率，第二时频资源由第一回传信令的接收基站码分复用。Specifically, according to one aspect of the present invention, it is characterized in that the first backhaul signaling is broadcast signaling, the receiving base station of the first backhaul signaling maintains zero transmission power in the first time-frequency resource, and the second time-frequency resource The resources are code-division multiplexed by the receiving base station of the first backhaul signaling.
作为一个实施例，第一回传信令的接收基站中有发送需求的基站都在第二时频资源中发送回传信令用于指示各自的发送请求。As an embodiment, among the base stations receiving the first backhaul signaling, the base stations that have transmission requirements all send the backhaul signaling in the second time-frequency resource to indicate their respective sending requests.
本发明公开了一种基站设备，其特征在于，该设备包括：The invention discloses a base station device, which is characterized in that the device includes:
第一模块：用于接收第一回传信令确定第一时频资源和第二时频资源The first module: used to receive the first return signaling to determine the first time-frequency resource and the second time-frequency resource
第二模块：用于在第二时频资源上发送第二回传信令The second module: used to send the second return signaling on the second time-frequency resource
第三模块：用于接收第三回传信令确定在第一载波上进行发送The third module: used to receive the third backhaul signaling and determine to send it on the first carrier
第四模块：用于在第一载波上的第三时频资源上发送下行无线信号。The fourth module: used for sending downlink wireless signals on the third time-frequency resource on the first carrier.
其中，第一时频资源和第二时频资源均位于第一载波，第一载波部署于非授权频谱，第二回传信令包括{特征序列，信息比特}中的一种或者两种，所述基站在第一时频资源保持零发送功率。Wherein, both the first time-frequency resource and the second time-frequency resource are located on the first carrier, the first carrier is deployed on an unlicensed spectrum, and the second backhaul signaling includes one or both of {characteristic sequence, information bit}, The base station maintains zero transmit power in the first time-frequency resource.
作为一个实施例，上述设备的特征在于，第一回传信令是广播信令，第一回传信令的接收基站在第一时频资源中保持零发送功率，第二时频资源由第一回传信令的接收基站码分复用。As an embodiment, the above device is characterized in that the first backhaul signaling is broadcast signaling, the receiving base station of the first backhaul signaling maintains zero transmission power in the first time-frequency resource, and the second time-frequency resource is provided by the second time-frequency resource. A receiving base station of the backhaul signaling is code-division multiplexed.
作为一个实施例，第二模块还用于在第一时频资源监听接收功率。As an embodiment, the second module is further configured to monitor received power on the first time-frequency resource.
其中，第二回传信令指示发送请求即所述基站请求占用时频资源发送无线信号，所述接收功率低于特定阈值，所述特定阈值是预确定的或者是所述基站自行确定的或者是由第一回传信令的发送基站配置的。Wherein, the second backhaul signaling indicates a sending request, that is, the base station requests to occupy time-frequency resources to send wireless signals, and the received power is lower than a specific threshold, and the specific threshold is predetermined or determined by the base station itself, or is configured by the sending base station of the first backhaul signaling.
本发明公开了一种基站设备，其特征在于，该设备包括：The invention discloses a base station device, which is characterized in that the device includes:
第一模块：用于发送第一回传信令指示第一时频资源和第二时频资源The first module: used to send the first return signaling to indicate the first time-frequency resource and the second time-frequency resource
第二模块：用于在第二时频资源上接收目标信令集合，所述目标信令集合包括K个目标信令，其中1个目标信令是第二回传信令，所述K是正整数The second module: used to receive a target signaling set on a second time-frequency resource, the target signaling set includes K target signaling, wherein one target signaling is the second return signaling, and K is positive integer
第三模块：用于发送第三回传信令指示目标基站组在第一载波上进行发送，所述目标基站组中至少包括第二回传信令的发送基站。The third module: used to send the third backhaul signaling to instruct the target base station group to transmit on the first carrier, and the target base station group includes at least the sending base station of the second backhaul signaling.
其中，第一时频资源和第二时频资源均位于第一载波，第一载波部署于非授权频谱，第二回传信令包括{特征序列，信息比特}中的一种或者两种，所述基站在第一时频资源保持零发送功率。Wherein, both the first time-frequency resource and the second time-frequency resource are located on the first carrier, the first carrier is deployed on an unlicensed spectrum, and the second backhaul signaling includes one or both of {characteristic sequence, information bit}, The base station maintains zero transmit power in the first time-frequency resource.
作为一个实施例，上述设备的特征在于，第一回传信令是广播信令，第一回传信令的接收基站在第一时频资源中保持零发送功率，第二时频资源由第一回传信令的接收基站码分复用。As an embodiment, the above device is characterized in that the first backhaul signaling is broadcast signaling, the receiving base station of the first backhaul signaling maintains zero transmission power in the first time-frequency resource, and the second time-frequency resource is provided by the second time-frequency resource. A receiving base station of the backhaul signaling is code-division multiplexed.
作为一个实施例，所述目标基站组中还包括第一回传信令的发送基站。As an embodiment, the target base station group further includes a base station sending the first backhaul signaling.
如何实现非授权频谱上的基站间的紧密协同是LAA通信中的一个需要考虑的问题。针对这一问题，本发明提出了一种基站协同方案，头基站在共享的非授权频谱上发送回传信令指示第一时频资源和第二时频资源；接入头基站的成员基站在第一时频资源侦听接收功率以判断是否请求发送无线信号，(如果确定请求发送无线信号)则在第二时频资源发送第二回传信令。本发明的方案能够有效避免LAA通信的多个相邻基站的彼此干扰，提高通信效率。How to realize close coordination between base stations on unlicensed spectrum is a problem that needs to be considered in LAA communication. To solve this problem, the present invention proposes a base station coordination scheme. The head base station sends a backhaul signaling on the shared unlicensed spectrum to indicate the first time-frequency resource and the second time-frequency resource; The first time-frequency resource monitors the received power to determine whether to request to send the wireless signal, and (if it is determined that the request to send the wireless signal) sends the second return signaling on the second time-frequency resource. The scheme of the present invention can effectively avoid mutual interference of multiple adjacent base stations in LAA communication, and improve communication efficiency.
附图说明Description of drawings
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更加明显：Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
图1示出了根据本发明的一个实施例的基站协同的流程图；FIG. 1 shows a flowchart of base station coordination according to an embodiment of the present invention;
图2示出了根据本发明的一个实施例的时频资源位置的示意图；FIG. 2 shows a schematic diagram of time-frequency resource locations according to an embodiment of the present invention;
图3示出了根据本发明的又一个实施例的时频资源位置的示意图；FIG. 3 shows a schematic diagram of time-frequency resource locations according to yet another embodiment of the present invention;
图4示出了根据本发明的一个实施例的第三回传信令的示意图；FIG. 4 shows a schematic diagram of third backhaul signaling according to an embodiment of the present invention;
图5示出了根据本发明的一个实施例的成员基站中的处理装置的结构框图；Fig. 5 shows a structural block diagram of a processing device in a member base station according to an embodiment of the present invention;
图6示出了根据本发明的一个实施例的头基站中的处理装置的结构框图；FIG. 6 shows a structural block diagram of a processing device in a head base station according to an embodiment of the present invention;
具体实施方式detailed description
下文将结合附图对本发明的技术方案作进一步详细说明，需要说明的是，在不冲突的情况下，本申请的实施例和实施例中的特征可以任意相互组合。The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily.
实施例1Example 1
实施例1示例了基站协同的流程图，如附图1所示。附图1中，基站N1和基站N2属于同一个基站簇，基站N1是头基站即基站N1是所述基站簇的同步源，基站N2是成员基站，基站N2是UEU3的服务基站。其中步骤S22是可选步骤。Embodiment 1 illustrates a flow chart of base station coordination, as shown in FIG. 1 . In Figure 1, base station N1 and base station N2 belong to the same base station cluster, base station N1 is the head base station, that is, base station N1 is the synchronization source of the base station cluster, base station N2 is a member base station, and base station N2 is the serving base station of UEU3. Wherein step S22 is an optional step.
对于基站N1，在步骤S11中，发送第一回传信令指示第一时频资源和第二时频资源；在步骤S12中，在第二时频资源上接收目标信令集合，所述目标信令集合包括K个目标信令，其中1个目标信令是第二回传信令，所述K是正整数；在步骤S13中，发送第三回传信令指示目标基站组在第一载波上进行发送，所述目标基站组中至少包括基站N2。For the base station N1, in step S11, send the first backhaul signaling to indicate the first time-frequency resource and the second time-frequency resource; in step S12, receive the target signaling set on the second time-frequency resource, the target The signaling set includes K target signaling, wherein one target signaling is the second backhaul signaling, and K is a positive integer; in step S13, the third backhaul signaling is sent to indicate that the target base station group is on the first carrier The target base station group includes at least base station N2.
对于基站N2，在步骤S21中，接收第一回传信令确定第一时频资源和第二时频资源；在步骤S22中，在第一时频资源监听接收功率(即接收信号的功率)；在步骤S23中，在第二时频资源上发送第二回传信令；在步骤S24中，接收第三回传信令确定在第一载波上进行发送；在步骤S25中，在第一载波上的第三时频资源上发送下行无线信号给UEU3。For the base station N2, in step S21, receive the first backhaul signaling to determine the first time-frequency resource and the second time-frequency resource; in step S22, monitor the received power (that is, the power of the received signal) at the first time-frequency resource ; In step S23, send the second backhaul signaling on the second time-frequency resource; In step S24, receive the third backhaul signaling and determine to send it on the first carrier; In step S25, send the second backhaul signaling on the first carrier The downlink wireless signal is sent to UEU3 on the third time-frequency resource on the carrier.
实施例1中，第一时频资源和第二时频资源均位于第一载波，第一载波部署于非授权频谱，第二回传信令包括{特征序列，信息比特}中的一种或者两种，所述基站簇中的所有基站在第一时频资源保持零发送功率。所述接收功率低于特定阈值，所述特定阈值是预确定的或者是基站N2自行确定的或者是由基站N1配置的In Embodiment 1, both the first time-frequency resource and the second time-frequency resource are located on the first carrier, the first carrier is deployed on an unlicensed spectrum, and the second backhaul signaling includes one of {characteristic sequence, information bit} or Two, all base stations in the base station cluster maintain zero transmit power in the first time-frequency resource. The received power is lower than a specific threshold, and the specific threshold is predetermined or determined by the base station N2 itself or configured by the base station N1
实施例1中，第一时频资源和第二时频资源在时间上是正交的。In Embodiment 1, the first time-frequency resource and the second time-frequency resource are orthogonal in time.
作为实施例1的子实施例1，第二回传信令包括特征序列，所述特征序列在可选序列池中的索引是由基站N2实时随机选择的。基站N1根据所述K个目标信令各自对应的索引按照公平性原则确定所述目标基站组。作为所述公平性原则的一个实施例，所述目标基站组仅包括1个基站。所述1个基站是所述K个目标信令相应的索引中的最小值所对应的发送基站。As a sub-embodiment 1 of Embodiment 1, the second backhaul signaling includes a characteristic sequence, and the index of the characteristic sequence in the optional sequence pool is randomly selected by the base station N2 in real time. The base station N1 determines the target base station group according to the indexes corresponding to the K target signaling according to the principle of fairness. As an embodiment of the fairness principle, the target base station group includes only one base station. The one base station is the sending base station corresponding to the smallest value among the indexes corresponding to the K target signalings.
作为实施例1的子实施例2，第二回传信令包括特征序列，所述特征序列在可选序列池中的索引是由基站N1配置的。基站N1根据所述K个目标信令各自对应的索引按照公平性原则确定所述目标基站组。作为所述公平性原则的一个实施例，所述目标基站组包括所述K个目标信令对应的发送基站。所述目标基站组中的基站平均配置可用资源。As a sub-embodiment 2 of Embodiment 1, the second backhaul signaling includes a characteristic sequence, and the index of the characteristic sequence in the optional sequence pool is configured by the base station N1. The base station N1 determines the target base station group according to the indexes corresponding to the K target signaling according to the principle of fairness. As an embodiment of the fairness principle, the target base station group includes transmitting base stations corresponding to the K target signaling. The base stations in the target base station group allocate available resources on average.
作为实施例1的子实施例3，所述时域资源被基站N1用于在第二载波上调度无线信号传输。As a sub-embodiment 3 of Embodiment 1, the time-domain resource is used by the base station N1 to schedule wireless signal transmission on the second carrier.
作为实施例1的子实施例4，所述目标基站组还包括基站N1。基站N1不需要在第二时频资源中发送回传信令，只需要按照公平性原则确定所述目标基站组。As sub-embodiment 4 of embodiment 1, the target base station group further includes base station N1. The base station N1 does not need to send backhaul signaling in the second time-frequency resource, but only needs to determine the target base station group according to the principle of fairness.
实施例2Example 2
实施例2示例了本发明中的所述时频资源的位置示意图，如附图2所示。附图2中，斜线标识的方格是第一时频资源，反斜线标识的方格是第二时频资源，粗线标识的方格是第三时频资源。Embodiment 2 illustrates a schematic diagram of the location of the time-frequency resource in the present invention, as shown in FIG. 2 . In FIG. 2 , the squares marked with slashes are the first time-frequency resources, the squares marked with backslashes are the second time-frequency resources, and the squares marked with thick lines are the third time-frequency resources.
实施例2中，第二时频资源在时间上位于第一时频资源之前，第三时频资源在频域上占用了整个第一载波的带宽。In Embodiment 2, the second time-frequency resource is located before the first time-frequency resource in time, and the third time-frequency resource occupies the entire bandwidth of the first carrier in the frequency domain.
作为实施例2的子实施例1，本发明中的所述目标基站组中只包括1个基站。As sub-embodiment 1 of embodiment 2, the target base station group in the present invention includes only one base station.
作为实施例2的子实施例2，第一回传信令是广播信令，第一回传信令的接收基站在第一时频资源中保持零发送功率，第二时频资源由第一回传信令的接收基站码分复用。As a sub-embodiment 2 of Embodiment 2, the first backhaul signaling is broadcast signaling, and the receiving base station of the first backhaul signaling maintains zero transmission power in the first time-frequency resource, and the second time-frequency resource is controlled by the first The receiving base station of the return signaling is code-division multiplexed.
实施例3Example 3
实施例3示例了又一个本发明中的所述时频资源的位置示意图，如附图3所示。附图3中，斜线标识的方格是第一时频资源，反斜线标识的方格是第二时频资源，粗线标识的方格是第三时频资源。Embodiment 3 illustrates yet another schematic diagram of the location of the time-frequency resource in the present invention, as shown in FIG. 3 . In FIG. 3 , the squares marked with slashes are the first time-frequency resources, the squares marked with backslashes are the second time-frequency resources, and the squares marked with bold lines are the third time-frequency resources.
实施例3中，第一时频资源在时间上位于第二时频资源之前，第三时频资源在频域上占用了第一载波的部分带宽。In Embodiment 3, the first time-frequency resource is located before the second time-frequency resource in time, and the third time-frequency resource occupies part of the bandwidth of the first carrier in the frequency domain.
作为实施例3的子实施例，本发明中的所述目标基站组中包括不只1个基站。As a sub-embodiment of Embodiment 3, the target base station group in the present invention includes more than one base station.
实施例4Example 4
实施例4示例了第三回传信令的示意图，如附图4所示。附图4中，粗线标识的方格是第三回传信令隐式分配的用于下行传输的时频资源。Embodiment 4 illustrates a schematic diagram of the third backhaul signaling, as shown in FIG. 4 . In FIG. 4 , the squares marked with thick lines are the time-frequency resources implicitly allocated by the third backhaul signaling for downlink transmission.
第三回传信令包括N个小区ID，分别是第一小区ID，第二小区ID，...，第N小区ID。所述小区ID是正整数，所述小区ID的维持基站所分配的用于下行传输的时频资源由所述小区ID在第三回传信令中的位置隐式确定-第一小区ID对应R1时频资源，第二小区ID对应R2时频资源，...，第N小区ID对应RN时频资源。The third backhaul signaling includes N cell IDs, which are respectively the first cell ID, the second cell ID, . . . , the Nth cell ID. The cell ID is a positive integer, and the time-frequency resource allocated by the base station maintaining the cell ID for downlink transmission is implicitly determined by the position of the cell ID in the third backhaul signaling—the first cell ID corresponds to R1 Time-frequency resources, the ID of the second cell corresponds to the time-frequency resource of R2, ..., the ID of the Nth cell corresponds to the time-frequency resource of the RN.
所述N是由第三回传信令的发送基站配置的，或者是预确定的常数。The N is configured by the base station sending the third backhaul signaling, or is a predetermined constant.
实施例5Example 5
实施例5示例了成员基站中的处理装置的结构框图，如附图5所示。附图5中，处理装置300由接收模块301，发送模块302，接收模块303和发送模块304组成。Embodiment 5 illustrates a structural block diagram of a processing device in a member base station, as shown in FIG. 5 . In FIG. 5 , the processing device 300 is composed of a receiving module 301 , a sending module 302 , a receiving module 303 and a sending module 304 .
接收模块301用于接收第一回传信令确定第一时频资源和第二时频资源；发送模块302用于在第二时频资源上发送第二回传信令；接收模块303用于接收第三回传信令确定在第一载波上进行发送；发送模块304用于在第一载波上的第三时频资源上发送下行无线信号。The receiving module 301 is used to receive the first backhaul signaling to determine the first time-frequency resource and the second time-frequency resource; the sending module 302 is used to send the second backhaul signaling on the second time-frequency resource; the receiving module 303 is used to After receiving the third backhaul signaling, it is determined to send on the first carrier; the sending module 304 is configured to send the downlink wireless signal on the third time-frequency resource on the first carrier.
实施例5中，第一时频资源和第二时频资源均位于第一载波，第一载波部署于非授权频谱，第二回传信令包括{特征序列，信息比特}中的一种或者两种，所述基站在第一时频资源保持零发送功率。In Embodiment 5, both the first time-frequency resource and the second time-frequency resource are located on the first carrier, the first carrier is deployed on an unlicensed spectrum, and the second backhaul signaling includes one of {characteristic sequence, information bit} or Two, the base station maintains zero transmit power in the first time-frequency resource.
作为实施例5的子实施例1，第一回传信令是周期性发送的同步序列，所述同步序列用于作为基站簇的同步参考。第一时频资源和第二时频资源由所述同步序列隐式指示，即第一时频资源和第二时频资源相对于所述同步序列的时频位置是预确定的。As a sub-embodiment 1 of Embodiment 5, the first backhaul signaling is a synchronization sequence sent periodically, and the synchronization sequence is used as a synchronization reference of the base station cluster. The first time-frequency resource and the second time-frequency resource are implicitly indicated by the synchronization sequence, that is, the time-frequency positions of the first time-frequency resource and the second time-frequency resource relative to the synchronization sequence are predetermined.
作为实施例5的子实施例2，第一回传信令显式指示第一时频资源和第二时频资源的位置。As a sub-embodiment 2 of Embodiment 5, the first backhaul signaling explicitly indicates the positions of the first time-frequency resource and the second time-frequency resource.
作为实施例5的子实施例3，第一回传信令是广播信令，第一回传信令的接收基站在第一时频资源中保持零发送功率，第二时频资源由第一回传信令的接收基站码分复用。As a sub-embodiment 3 of Embodiment 5, the first backhaul signaling is broadcast signaling, and the receiving base station of the first backhaul signaling maintains zero transmission power in the first time-frequency resource, and the second time-frequency resource is controlled by the first time-frequency resource. The receiving base station of the return signaling is code-division multiplexed.
实施例6Example 6
实施例6示例了头基站中的处理装置的结构框图，如附图6所示。附图6中，处理装置400由发送模块401，接收模块402和发送模块403组成。Embodiment 6 illustrates a structural block diagram of a processing device in the head base station, as shown in FIG. 6 . In FIG. 6 , the processing device 400 is composed of a sending module 401 , a receiving module 402 and a sending module 403 .
发送模块401用于发送第一回传信令指示第一时频资源和第二时频资源；接收模块402用于在第二时频资源上接收目标信令集合，所述目标信令集合包括K个目标信令，其中1个目标信令是第二回传信令，所述K是正整数；发送模块403用于发送第三回传信令指示目标基站组在第一载波上进行发送，所述目标基站组中至少包括第二回传信令的发送基站。The sending module 401 is used to send the first feedback signaling to indicate the first time-frequency resource and the second time-frequency resource; the receiving module 402 is used to receive the target signaling set on the second time-frequency resource, and the target signaling set includes K target signaling, wherein one target signaling is the second backhaul signaling, and K is a positive integer; the sending module 403 is used to send the third backhaul signaling to instruct the target base station group to send on the first carrier, The target base station group includes at least the sending base station of the second backhaul signaling.
实施例6中，第一时频资源和第二时频资源均位于第一载波，第一载波部署于非授权频谱，第二回传信令包括{特征序列，信息比特}中的一种或者两种，所述基站在第一时频资源保持零发送功率。所述目标信令是第二回传信令或者是第二回传信令的对等物。In Embodiment 6, both the first time-frequency resource and the second time-frequency resource are located on the first carrier, the first carrier is deployed on an unlicensed spectrum, and the second backhaul signaling includes one of {characteristic sequence, information bit} or Two, the base station maintains zero transmit power in the first time-frequency resource. The target signaling is the second backhaul signaling or an equivalent of the second backhaul signaling.
作为实施例6的子实施例1，第一回传信令是广播信令，第一回传信令的接收基站在第一时频资源中保持零发送功率，第二时频资源由第一回传信令的接收基站码分复用。As a sub-embodiment 1 of Embodiment 6, the first backhaul signaling is broadcast signaling, and the receiving base station of the first backhaul signaling maintains zero transmission power in the first time-frequency resource, and the second time-frequency resource is controlled by the first time-frequency resource. The receiving base station of the return signaling is code-division multiplexed.
作为实施例6的子实施例2，所述目标基站组还包括第一回传信令的发送基站。As a sub-embodiment 2 of Embodiment 6, the target base station group further includes a sending base station of the first backhaul signaling.
本领域普通技术人员可以理解上述方法中的全部或部分步骤可以通过程序来指令相关硬件完成，所述程序可以存储于计算机可读存储介质中，如只读存储器，硬盘或者光盘等。可选的，上述实施例的全部或部分步骤也可以使用一个或者多个集成电路来实现。相应的，上述实施例中的各模块单元，可以采用硬件形式实现，也可以由软件功能模块的形式实现，本申请不限于任何特定形式的软件和硬件的结合。Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above-mentioned embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules, and the present application is not limited to any specific combination of software and hardware.
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所做的任何修改，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 protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270987.1ACN110099385B (en) | 2014-09-10 | 2014-09-10 | Authorized spectrum auxiliary access communication method and device in cellular network |
| CN201410459310.XACN105472623B (en) | 2014-09-10 | 2014-09-10 | A kind of authorized spectrum assisted access communication method and device in cellular network |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410459310.XACN105472623B (en) | 2014-09-10 | 2014-09-10 | A kind of authorized spectrum assisted access communication method and device in cellular network |
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| CN201410459310.XAActiveCN105472623B (en) | 2014-09-10 | 2014-09-10 | A kind of authorized spectrum assisted access communication method and device in cellular network |
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