WO2011044726A1 - Spectrum sharing method and device for distributed network - Google Patents
Spectrum sharing method and device for distributed network Download PDFInfo
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- WO2011044726A1 WO2011044726A1 PCT/CN2009/074428 CN2009074428W WO2011044726A1 WO 2011044726 A1 WO2011044726 A1 WO 2011044726A1 CN 2009074428 W CN2009074428 W CN 2009074428W WO 2011044726 A1 WO2011044726 A1 WO 2011044726A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
Definitions
- the present invention relates to wireless communication technologies, and in particular, to a spectrum sharing method and device in a wireless distributed network. Background technique
- an initial base station Before entering the spectrum sharing community, an initial base station (IBS) will broadcast its information in the initial coexistence signaling gap (ISCI) of the coexistence channel. Its neighboring base stations, that is, the working base station (OBS), will use the coexistence agent to transmit the respective current spectrum usage information to the initial base station using the coexistence protocol message. Based on the acquired spectrum usage information, the initial base station can know which spectrum segment (time/frequency resource block) to use. When the initial base station can find an idle spectrum segment, the spectrum hole can be utilized. When there is no available free spectrum segment, the initial base station will initiate a spectrum negotiation process with the working base station to share the working channel of the working base station.
- ISCI initial coexistence signaling gap
- This distributed spectrum sharing scheme in 802.16h relies on IP networks. Communication messages between most systems, such as coexistence protocol messages, are conveyed by the IP network through the protocol interface of the coexistence agent. This scheme can alleviate the signaling overhead of the air interface. However, this scheme cannot be applied in a distributed network without an IP connection. In addition, coexistence agents must be set up for protocol conversion, which increases the complexity and cost of the spectrum sharing system.
- the spectrum is utilized by a pattern of seek and fill: The initial base station will first find the free spectrum segment. If there are free spectrum resources, fill them. If not, some spectrum processing mechanisms may be used to provide access permission for the initial base station. This type of spectrum The solution is a simple and straightforward method of filling. However, in principle, the spectrum sharing mechanism is not optimal because the spectrum allocation optimization mechanism is not used in the spectrum sharing community, so it is difficult to obtain high spectrum utilization. Summary of the invention
- the present invention provides a spectrum sharing method for a wireless distributed network and a terminal device implementing the same.
- a spectrum sharing method for a first communication group of a wireless distributed network is provided, the first communication group and another at least one communication group form a shared community sharing a spectrum, and each communication The group includes at least two communication terminals, and the method includes the following steps: A. determining an initial communication scheme of the first communication group; B. using a convergence strategy to iteratively update the first communication protocol according to the evaluation result of the communication scheme of each communication group A communication group communication scheme until a predetermined condition is met.
- the spectrum sharing method further includes the following steps between step A and step B: transmitting a training signal according to an initial communication scheme of the first communication group; according to each of the received shared communities
- the training signals of the communication group evaluate the training results of the first communication group, the training results including the target performance and the program preferences of the first communication group.
- step B in the spectrum sharing method includes the following sub-steps: B1. Updating the first by using the convergence policy based at least in part on a scheme preference of each communication group of the shared community. a communication scheme of the communication group, the updated communication scheme includes channel selection and transmission power allocation; B2. transmitting a training signal according to the updated communication scheme of the first communication group; B3. according to the received communication groups in the shared community Training signal to evaluate the training result of the first communication group, the training result including the target performance and the program preference of the first communication group; B4.
- the updated communication scheme is determined as the communication scheme of the first communication group; if the predetermined condition is not satisfied, steps B1, B2, B3 are re-executed.
- a method for implementing the above spectrum is provided.
- a terminal device of the method the terminal device is part of the first communication group, and performs communication according to the determined communication protocol of the first communication group.
- the spectrum sharing of the wireless distributed network can be realized, and the spectrum utilization rate of the system is improved.
- FIG. 1 is a schematic diagram of an architecture of a distributed spectrum sharing system in the prior art
- FIG. 2 is a schematic diagram of a wireless distributed network according to an embodiment of the present invention
- FIG. 3 shows a flow chart of a frequency sharing method for a wireless distributed network, in accordance with one embodiment of the present invention
- FIG. 4 shows a flow chart of a spectrum sharing method for a wireless distributed network in accordance with one embodiment of the present invention. detailed description
- FIG. 2 shows a schematic diagram of a wireless distributed network in accordance with one embodiment of the present invention.
- the wireless distributed network includes a first communication group 10, a second communication group 20, and a third communication group 30.
- the first communication group 10 includes two terminal devices 11 and 12 that communicate with each other
- the second communication group 20 includes two terminal devices 21 and 22 that communicate with each other
- the third communication group includes two terminal devices 31 and 32 that communicate with each other.
- These three communication groups use the same spectrum resources to form a spectrum sharing community.
- a possible formation process of the spectrum sharing community is as follows: Within a certain time and a certain area, resources of only one frequency band in the wireless distributed network are available for allocation; the first communication group 10 first determines resources using the frequency band. Communication; subsequently, the second communication group 20 also determines to use the resources of the frequency band for communication, and thus the second communication group 20 The first communication group 10 negotiates to form a spectrum sharing community to share resources of the frequency band; then, the third communication group 30 also determines to use the resources of the frequency band for communication, and thus communicates with the first communication group io, the second communication Group 20 negotiates to join the spectrum sharing community and share resources for the band.
- the description of the shared community and communication group in the above examples is illustrative and not limiting. At least two communication groups are included in one spectrum sharing community.
- the number of terminal devices in a communication group is not limited to two, and may be three or more.
- a terminal device as a data source and a plurality of terminal devices that download data from the data source may constitute a communication group.
- the following description takes a communication group including two terminal devices as an example.
- the invention is applicable to wireless distributed networks, such as ad hoc networks.
- wireless distributed networks such as ad hoc networks.
- the communication scheme of a communication group may include a channel selected by the communication group for communication and a signal transmission power, wherein the selection of the channel may be any one or any combination of the following: space, time, frequency, coding. A more typical channel selection is to select the transmit slot in the shared frequency band.
- each communication group within a spectrum sharing community initiates such an iterative process to trigger a respective communication scheme, triggered by certain spectrum sharing trigger events.
- Possible triggering events include: changes in the number and/or quality of the spectrum of the shared band, a new communication group joining the spectrum sharing community, or a communication group exiting the spectrum sharing community.
- FIG. 3 shows a flow chart of a spectrum sharing method for a wireless distributed network in accordance with one embodiment of the present invention. This will be described below in conjunction with Figures 2 and 3.
- the iterative process begins when a spectrum sharing trigger event occurs.
- the method consists of two steps.
- step S1 the first communication group 10 will determine its initial communication scheme.
- step S2 the first communication group 10 will communicate according to each communication group.
- the evaluation result of the scheme uses a convergence strategy to iteratively update its communication scheme until a predetermined condition is met.
- the second communication group 20 and the third communication group 30 will also iteratively update the respective communication schemes until predetermined conditions are met.
- FIG. 4 shows a flow chart of a spectrum sharing method for a wireless distributed network in accordance with yet another embodiment of the present invention. This flow chart is more detailed than the flow chart shown in Figure 3. Description will be made below with reference to Figs. 2 to 4 .
- An information exchange step may also be included before step S1, and each communication group transmits information about the communication group to other communication groups.
- Information about a communication group may include, for example, the frequency quality/channel quality or function of the communication group.
- the corresponding agreement can be made according to the communication method.
- the first communication group 10 includes the terminal devices 11 and 12, and the terminal device 11 first transmits a signal to the terminal device 12, and the terminal device 12 can measure the channel shield information of the first communication group 10 according to the received signal. It is transmitted to the second communication group 20 and the third communication group 30. In this way, each communication group has a basic understanding of the situation of each communication group in the spectrum sharing community.
- the first communication group 10 determines its initial communication scheme based on the information about each communication group, such as the channel quality information of each communication group, the initial communication scheme including the selected channel and/or determined. Signal transmission power.
- the second communication group 20 and the third communication group 30 also perform similar operations to determine respective initial communication schemes.
- the convergence speed and optimization performance of the spectrum sharing method are mainly guaranteed by the subsequent iterative process, so that only the simple channel selection can be performed when determining the initial communication scheme, and the signal transmission power is set to unit power.
- each communication group transmits training signals according to respective communication schemes, that is, transmits training signals at unit power on respective selected channels.
- This step is performed synchronously by each communication group, that is, each communication group transmits a training signal in the same signal frame.
- the synchronization of the signal frames of the respective communication groups can be synchronized by the same external clock, such as GPS synchronization; or synchronized to the same communication group, for example, the second communication group 20 and the third communication group 30 are synchronized to the first communication group 10.
- GPS synchronization is employed in this embodiment.
- the first communication group 10 will evaluate the training result of the first communication group 10 according to the received training signals of the respective communication groups, which may include the target performance and the program preference of the first communication group 10.
- a typical content of target performance is the data transfer rate.
- the scheme preferences may include information related to co-channel interference, such as the common channel interference sensitivity of each channel of the first communication group 10 in the shared frequency band, and the common channel interference sensitivity may be expressed as data caused by an increase in unit-channel interference. The drop in transmission rate. In general, the lower the sensitivity of the co-channel interference of a channel, the higher the tendency to select the channel.
- the second communication group 20 and the third communication group 30 will perform an evaluation process similar to the first communication group 10.
- step S2 begins to enter the iterative process, that is, step S2 as shown.
- This step can be further divided into the following sub-steps.
- the first communication group 10 will update its communication scheme with a convergence policy based at least in part on the scheme preferences of the respective communication groups.
- the convergence strategy can be expressed as a function; the input of the function includes at least the program preference of each communication group in the previous evaluation result; the output of the function includes the selected channel and/or the determined signal transmission power
- the content, that is, the output of the function includes a communication scheme.
- the second communication group 20 and the third communication group 30 also perform similar operations to update the respective communication schemes.
- each communication group transmits a training signal according to the respective updated communication scheme, i.e., transmits the training signal at the determined signal transmission power on the respective selected channel.
- This step is performed synchronously by each communication group, that is, each communication group transmits a training signal in the same signal frame.
- the first communication group 10 will evaluate the training result of the first communication group 10 according to the received training signals of the respective communication groups, which may include the first communication Target performance and program preferences for letter group 10.
- the second communication group 20 and the third communication group 30 will perform an evaluation process similar to the first communication group 10.
- Sub-step S241 is a decision step.
- the first communication group 10 will judge whether or not the target performance of each communication group satisfies a predetermined condition.
- the second communication group 20 and the third communication group 30 will also perform such determinations, respectively. If the predetermined condition is not satisfied, the above sub-steps S21, S22, S23 will be repeated for the next iterative process. If the predetermined condition is satisfied, the sub-step S242 is entered, and each communication group determines the updated communication scheme as the respective communication scheme, and ends the iterative process. After that, each communication group will communicate according to the respective communication scheme.
- a specific predetermined condition may be that the increments of the target performance of each communication group are less than a predetermined value. When this predetermined condition is satisfied, it means that there is not much room for improvement in the communication performance of each communication group.
- different predetermined values may be set for different communication groups, i.e., the predetermined condition becomes that the target performance increment of each communication group is less than the respective predetermined value.
- an information exchange step is required between the sub-step S23 and the sub-step S241, and each communication group exchanges information on the respective target performance increments with each other.
- the information exchange step of the exchange scheme preference before the sub-step S21 of the next iteration can be merged with the information exchange step here, and is performed before the sub-step S241.
- the information exchange step of the exchange plan preference may be performed less, thereby reducing the system signaling overhead.
- step S1 1 and the sub-step S22 in each iterative process that is, the steps of transmitting the training signal are all performed synchronously by the respective communication groups, therefore, preferably, the remaining steps/sub-steps It is also performed synchronously by each communication group. In this way, the steps of information exchange can be performed regularly between the communication groups, so that the signaling overhead of the system can be reduced.
- the output includes The content related to the communication scheme of a communication group, the input of a posteriori knowledge including the communication scheme of each communication group of the shared community, and the convergence function can be used as the convergence strategy used in the present invention because such a function Can be used for iteration and can guarantee the convergence of the operation results.
- the determining sub-step S241 may further include: if the number of iterations exceeds a predetermined natural number, for example, 10, exiting the iterative process.
- each communication group may have its own objective function or individual function.
- Each communication group develops its own communication schemes, rather than independently, to maximize their respective target performance.
- the convergence and optimization performance of these algorithms can be ensured by appropriate objective function design and theoretical models.
- the information exchange step prior to step S1 may be omitted, and each communication group may determine its initial communication scheme based only on its own related information, particularly information about channel quality.
- the overall communication performance of the system, especially the spectrum utilization, is optimized by a subsequent iterative solution update process.
- the above spectrum sharing methods are all implemented by each communication group in a spectrum sharing community.
- implementing the spectrum sharing method includes a first initial communication plan formulation process and at least one iteration of the communication plan update process.
- the above method applies an iterative process to direct the communication schemes of the various communication groups to converge to the optimal combination.
- each communication group updates its communication scheme based on the principle of maximizing spectrum utilization. These communication schemes are evaluated by sending training signals. Estimate. The results of the evaluation are communicated to all communication groups by message exchange, and such feedback is used as prior knowledge for the next iteration.
- the distributed communication group exchanges messages on the spatial interface without relying on the backbone network.
- the above method can typically be implemented by a software program.
- a software program within such a software program
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Abstract
A spectrum sharing method for wireless distributed network and a terminal device for realizing the method are provided by the invention. One embodiment of the invention provides a spectrum sharing method for a first communication group of a wireless distributed network. The first communication group and at least one other communication group compose a sharing community for sharing spectrum. Each communication group includes at least two communication terminals, one sending terminal and one receiving terminal. The method includes the following steps: confirming an initial communication scheme of the first communication group (S1); utilizing a convergent strategy to update the communication scheme of the first communication group according to communication scheme evaluation result of each communication group, until a preset condition is satisfied (S2). The method and device provided by the invention enable spectrum sharing for the wireless distributed network, thus improving spectrum utilization ratio.
Description
用于分布式网络的频谱共享方法及设备 技术领域 Spectrum sharing method and device for distributed network
本发明涉及无线通信技术， 尤其涉及无线分布式网络中的频谱 共享方法及设备。 背景技术 The present invention relates to wireless communication technologies, and in particular, to a spectrum sharing method and device in a wireless distributed network. Background technique
对于分布式频谱共享， 一种典型的现有技术方案见于 IEEE 802.16h WiMAX。 该方案的***架构如图 1所示。 具有交叠信号覆 盖区域的相邻基站构成频谱共享社区， 其中频谱被分布式地共享。 每一个基站具有一个分布式数据库， 存储了实际使用的和将要使用 的频谱资源的共享信息。 这些分布式数据库可以依靠共存代理通过 For distributed spectrum sharing, a typical prior art solution is found in IEEE 802.16h WiMAX. The system architecture of the solution is shown in Figure 1. Adjacent base stations with overlapping signal coverage areas constitute a spectrum sharing community in which the spectrum is shared distributed. Each base station has a distributed database that stores the shared information of the spectrum resources actually used and to be used. These distributed databases can rely on coexistence agents to pass
IP连接来访问。 IP connection to access.
在进入频谱共享社区之前， 一个初始基站 （IBS )将在共存信道 的初始共存信令间隙 （ISCI ) 中广播其信息。 其相邻基站， 也就是 工作基站 （ OBS ) ， 将通过共存代理使用共存协议消息将各自的当 前频谱使用信息发送给初始基站。 基于所获取的频谱使用信息， 初 始基站可以得知使用哪一个频谱片段 （时 /频资源块） 。 当初始基站 能找到空闲的频谱片段时， 则可以利用该频谱空洞。 而当没有可用 的空闲频谱片段， 初始基站将发起一个与工作基站之间的频谱协商 过程， 以分享工作基站的工作信道。 Before entering the spectrum sharing community, an initial base station (IBS) will broadcast its information in the initial coexistence signaling gap (ISCI) of the coexistence channel. Its neighboring base stations, that is, the working base station (OBS), will use the coexistence agent to transmit the respective current spectrum usage information to the initial base station using the coexistence protocol message. Based on the acquired spectrum usage information, the initial base station can know which spectrum segment (time/frequency resource block) to use. When the initial base station can find an idle spectrum segment, the spectrum hole can be utilized. When there is no available free spectrum segment, the initial base station will initiate a spectrum negotiation process with the working base station to share the working channel of the working base station.
802.16h中的这一分布式频谱共享方案依赖于 IP网络。多数*** 间的通信消息， 例如共存协议消息， 由 IP网络通过共存代理的协议 接口传达。 该方案可以减轻空中接口的信令开销， 然而， 该方案在 没有 IP连接的分布式网络中无法应用。 此外， 必须设置共存代理用 于协议转换， 这将增加频谱共享***的复杂性和成本。 在该方案中， 频谱被通过一种寻找并填充的模式而利用： 初始基站将首先找到空 闲的频谱片段。 如果有空闲的频谱资源， 则填充。 如果没有， 可能 使用一些频谱处理机制来提供初始基站的接入允许。 这一类频谱共
享方案釆用的是简单直接的填充方法。 然而， 从原理上来说该频谱 共享机制并非最优的， 因为频谱共享社区中没有采用频谱分配优化 机制， 因此很难获得高频谱利用率。 发明内容 This distributed spectrum sharing scheme in 802.16h relies on IP networks. Communication messages between most systems, such as coexistence protocol messages, are conveyed by the IP network through the protocol interface of the coexistence agent. This scheme can alleviate the signaling overhead of the air interface. However, this scheme cannot be applied in a distributed network without an IP connection. In addition, coexistence agents must be set up for protocol conversion, which increases the complexity and cost of the spectrum sharing system. In this scheme, the spectrum is utilized by a pattern of seek and fill: The initial base station will first find the free spectrum segment. If there are free spectrum resources, fill them. If not, some spectrum processing mechanisms may be used to provide access permission for the initial base station. This type of spectrum The solution is a simple and straightforward method of filling. However, in principle, the spectrum sharing mechanism is not optimal because the spectrum allocation optimization mechanism is not used in the spectrum sharing community, so it is difficult to obtain high spectrum utilization. Summary of the invention
为了解决现有技术中的上述问题， 本发明提供了用于无线分布 式网络的频谱共享方法及实现该方法的终端设备。 In order to solve the above problems in the prior art, the present invention provides a spectrum sharing method for a wireless distributed network and a terminal device implementing the same.
根据本发明的一个实施例， 提供了一种用于无线分布式网络的 一个第一通信组的频谱共享方法， 该第一通信组与其他至少一个通 信组组成一个共享频谱的共享社区， 各通信组包括至少两个通信终 端， 所述方法包括以下步骤： A. 确定第一通信组的初始通信方案； B. 根据各通信组的通信方案的评估结果， 采用一个收敛性策略来迭 代地更新第一通信组的通信方案， 直到满足一个预定条件。 According to an embodiment of the present invention, a spectrum sharing method for a first communication group of a wireless distributed network is provided, the first communication group and another at least one communication group form a shared community sharing a spectrum, and each communication The group includes at least two communication terminals, and the method includes the following steps: A. determining an initial communication scheme of the first communication group; B. using a convergence strategy to iteratively update the first communication protocol according to the evaluation result of the communication scheme of each communication group A communication group communication scheme until a predetermined condition is met.
根据本发明的另一个实施例， 所述频谱共享方法在步骤 A和步 骤 B之间还包括以下步骤： 根据第一通信组的初始通信方案发送训 练信号； 根据接收到的所述共享社区中各通信组的训练信号来评估 第一通信组的训练结果， 所述训练结果包括第一通信组的目标性能 和方案偏好。 According to another embodiment of the present invention, the spectrum sharing method further includes the following steps between step A and step B: transmitting a training signal according to an initial communication scheme of the first communication group; according to each of the received shared communities The training signals of the communication group evaluate the training results of the first communication group, the training results including the target performance and the program preferences of the first communication group.
根据本发明的另一个实施例， 所述频谱共享方法中的步骤 B包 括以下子步骤： B1. 至少部分地根据该共享社区的各通信组的方案 偏好， 采用所述收敛性策略来更新第一通信组的通信方案， 所述更 新的通信方案包括信道选择和发送功率分配； B2. 根据第一通信组 的更新的通信方案发送训练信号； B3. 根据接收到的所述共享社区 中各通信组的训练信号来评估第一通信组的训练结果， 所述训练结 果包括第一通信组的目标性能和方案偏好； B4. 如果该共享社区内 的各通信组的目标性能满足一个预定条件， 则将更新的通信方案确 定为第一通信组的通信方案； 如果不满足所述预定条件， 则重新执 行步骤 Bl、 B2、 B3。 According to another embodiment of the present invention, step B in the spectrum sharing method includes the following sub-steps: B1. Updating the first by using the convergence policy based at least in part on a scheme preference of each communication group of the shared community. a communication scheme of the communication group, the updated communication scheme includes channel selection and transmission power allocation; B2. transmitting a training signal according to the updated communication scheme of the first communication group; B3. according to the received communication groups in the shared community Training signal to evaluate the training result of the first communication group, the training result including the target performance and the program preference of the first communication group; B4. If the target performance of each communication group in the shared community satisfies a predetermined condition, The updated communication scheme is determined as the communication scheme of the first communication group; if the predetermined condition is not satisfied, steps B1, B2, B3 are re-executed.
根据本发明的另一个实施例， 提供了一种用于实现上述频谱共
享方法的终端设备， 该终端设备是组成所述第一通信组的一部分， 并根据所确定的第一通信组的通信方案来进行通信。 According to another embodiment of the present invention, a method for implementing the above spectrum is provided. A terminal device of the method, the terminal device is part of the first communication group, and performs communication according to the determined communication protocol of the first communication group.
使用本发明提供的方法及设备， 可以实现无线分布式网络的频 谱共享， 提高***的频谱利用率。 附图说明 By using the method and device provided by the invention, the spectrum sharing of the wireless distributed network can be realized, and the spectrum utilization rate of the system is improved. DRAWINGS
参考下面的图和说明， 将更好地理解该***。 图中的元件不一 定按比例绘制， 而是重点用于说明典型模型的原理。 在图中， 贯穿 不同的示图， 类似的参考标号表示对应的特征。 The system will be better understood with reference to the figures and description below. The components in the figures are not necessarily drawn to scale, but rather are used to illustrate the principles of a typical model. Throughout the drawings, like reference characters have
图 1为一种现有技术中的分布式频谱共享***的架构示意图； 图 2示出了根据本发明的一个实施例的无线分布式网络的示意 图； 1 is a schematic diagram of an architecture of a distributed spectrum sharing system in the prior art; FIG. 2 is a schematic diagram of a wireless distributed network according to an embodiment of the present invention;
图 3示出了根据本发明的一个实施例的用于无线分布式网络的 的频语共享方法的流程图； 3 shows a flow chart of a frequency sharing method for a wireless distributed network, in accordance with one embodiment of the present invention;
图 4示出了根据本发明的一个实施例的用于无线分布式网络的 的频谱共享方法的流程图。 具体实施方式 4 shows a flow chart of a spectrum sharing method for a wireless distributed network in accordance with one embodiment of the present invention. detailed description
图 2 示出了根据本发明的一个实施例的无线分布式网络的示意 图。 如图 2所示， 无线分布式网络中包括一个第一通信组 10、 一个 第二通信组 20和一个第三通信组 30。 第一通信组 10包括两个相互 通信的终端设备 11和 12 , 第二通信组 20包括两个相互通信的终端 设备 21和 22 , 第三通信组包括两个相互通信的终端设备 31和 32。 这三个通信组要使用相同的频谱资源， 从而组成了一个频谱共享社 区。 Figure 2 shows a schematic diagram of a wireless distributed network in accordance with one embodiment of the present invention. As shown in FIG. 2, the wireless distributed network includes a first communication group 10, a second communication group 20, and a third communication group 30. The first communication group 10 includes two terminal devices 11 and 12 that communicate with each other, the second communication group 20 includes two terminal devices 21 and 22 that communicate with each other, and the third communication group includes two terminal devices 31 and 32 that communicate with each other. These three communication groups use the same spectrum resources to form a spectrum sharing community.
频谱共享社区的一种可能的形成过程如下： 在一定的时间、 一 定的区域内， 无线分布式网络内仅剩余一个频段的资源可供分配； 第一通信组 10首先确定使用该频段的资源进行通信； 随后， 第二通 信组 20也确定使用该频段的资源进行通信， 于是第二通信组 20与
第一通信组 10进行协商， 组成一个频谱共享社区， 共享该频段的资 源； 再随后， 第三通信组 30也确定使用该频段的资源进行通信， 于 是其与第一通信组 io、 第二通信组 20进行协商， 加入该频谱共享社 区， 共享该频段的资源。 A possible formation process of the spectrum sharing community is as follows: Within a certain time and a certain area, resources of only one frequency band in the wireless distributed network are available for allocation; the first communication group 10 first determines resources using the frequency band. Communication; subsequently, the second communication group 20 also determines to use the resources of the frequency band for communication, and thus the second communication group 20 The first communication group 10 negotiates to form a spectrum sharing community to share resources of the frequency band; then, the third communication group 30 also determines to use the resources of the frequency band for communication, and thus communicates with the first communication group io, the second communication Group 20 negotiates to join the spectrum sharing community and share resources for the band.
需要理解的是， 上述例子中对共享社区和通信组的描述均是示 例性而非限制性的。 一个频谱共享社区中包括至少两个通信组。 一 个通信组中的终端设备的数量不限于两个， 也可以为三个甚至更多， 例如一个作为数据源的终端设备和多个从该数据源下载数据的终端 设备可以组成一个通信组。 It is to be understood that the description of the shared community and communication group in the above examples is illustrative and not limiting. At least two communication groups are included in one spectrum sharing community. The number of terminal devices in a communication group is not limited to two, and may be three or more. For example, a terminal device as a data source and a plurality of terminal devices that download data from the data source may constitute a communication group.
为简明起见， 下面均以一个通信组包括两个终端设备为例进行 描述。 For the sake of brevity, the following description takes a communication group including two terminal devices as an example.
本发明适用于无线分布式网络， 例如 ad hoc网络。 分布式网络 中不存在集中控制设备， 因而在一个频谱共享社区中， 各通信组迭 代地采用收敛性策略对各自的通信方案进行更新， 从而优化该频谱 共享社区的整体通信性能， 尤其是频谱利用率。 一个通信组的通信 方案可能包括该通信组进行通信所选择的信道以及信号发送功率， 其中， 信道的选择可以是以下各项中的任一项或任多项的组合： 空 间、 时间、 频率、 编码。 一种比较典型的信道选择是在共享频段中 进行发送时隙的选择。 The invention is applicable to wireless distributed networks, such as ad hoc networks. There is no centralized control device in the distributed network. Therefore, in a spectrum sharing community, each communication group iteratively uses a convergence strategy to update the respective communication schemes, thereby optimizing the overall communication performance of the spectrum sharing community, especially spectrum utilization. rate. The communication scheme of a communication group may include a channel selected by the communication group for communication and a signal transmission power, wherein the selection of the channel may be any one or any combination of the following: space, time, frequency, coding. A more typical channel selection is to select the transmit slot in the shared frequency band.
通常， 一个频谱共享社区内的各通信组是在某些频谱共享触发 事件的触发下开始这样的迭代过程以确定各自的通信方案的。 可能 的触发事件包括： 共享频段的频谱数量和 /或质量的变化， 有新的通 信组加入频谱共享社区， 或有通信组退出了频谱共享社区。 Typically, each communication group within a spectrum sharing community initiates such an iterative process to trigger a respective communication scheme, triggered by certain spectrum sharing trigger events. Possible triggering events include: changes in the number and/or quality of the spectrum of the shared band, a new communication group joining the spectrum sharing community, or a communication group exiting the spectrum sharing community.
图 3 示出了根据本发明的一个实施例的用于无线分布式网络的 的频谱共享方法的流程图。 以下结合图 2、 图 3加以说明。 FIG. 3 shows a flow chart of a spectrum sharing method for a wireless distributed network in accordance with one embodiment of the present invention. This will be described below in conjunction with Figures 2 and 3.
当频谱共享触发事件发生后， 迭代过程开始。 如图 3 所示， 该 方法包括两个步骤。 在步骤 S1 中， 第一通信组 10将确定其初始通 信方案。 相应地， 第二通信组 20和第三通信组 30也将确定各自的 初始通信方案。 在步骤 S2中， 第一通信组 10将根据各通信组的通
信方案的评估结果， 采用一个收敛性策略来迭代地更新其通信方案， 直到满足一个预定条件。 相应地， 第二通信组 20 和第三通信组 30 也将迭代地更新各自的通信方案， 直到满足预定条件。 The iterative process begins when a spectrum sharing trigger event occurs. As shown in Figure 3, the method consists of two steps. In step S1, the first communication group 10 will determine its initial communication scheme. Accordingly, the second communication group 20 and the third communication group 30 will also determine their respective initial communication schemes. In step S2, the first communication group 10 will communicate according to each communication group. The evaluation result of the scheme uses a convergence strategy to iteratively update its communication scheme until a predetermined condition is met. Accordingly, the second communication group 20 and the third communication group 30 will also iteratively update the respective communication schemes until predetermined conditions are met.
图 4 示出了根据本发明的又一个实施例的用于无线分布式网絡 的频谱共享方法的流程图。 该流程图比图 3 所示流程图更为详细。 以下将结合图 2至图 4进行说明。 4 shows a flow chart of a spectrum sharing method for a wireless distributed network in accordance with yet another embodiment of the present invention. This flow chart is more detailed than the flow chart shown in Figure 3. Description will be made below with reference to Figs. 2 to 4 .
在步骤 S1之前还可以包括一个信息交换步骤， 各通信组向其他 的通信组发送该通信组的有关信息。 一个通信组的有关信息可能包 括诸如该通信组的频语质量 /信道质量或者功能函数等。 在一个通信 组中， 具体由哪一个终端设备来发送该通信组的有关信息， 可以根 据通信方式进行相应的约定。 例如， 第一通信组 10包括终端设备 11 和 12 , 由终端设备 1 1首先向终端设备 12发送信号， 则终端设备 12 可以根据接收到的信号测得第一通信组 10的信道盾量信息并将其发 送给第二通信组 20和第三通信组 30。 这样， 每个通信组都对频谱共 享社区的各通信组的情况有一个基本了解。 An information exchange step may also be included before step S1, and each communication group transmits information about the communication group to other communication groups. Information about a communication group may include, for example, the frequency quality/channel quality or function of the communication group. In a communication group, which terminal device transmits the relevant information of the communication group, the corresponding agreement can be made according to the communication method. For example, the first communication group 10 includes the terminal devices 11 and 12, and the terminal device 11 first transmits a signal to the terminal device 12, and the terminal device 12 can measure the channel shield information of the first communication group 10 according to the received signal. It is transmitted to the second communication group 20 and the third communication group 30. In this way, each communication group has a basic understanding of the situation of each communication group in the spectrum sharing community.
然后， 在步骤 S1 中， 第一通信组 10根据各通信组的有关信息， 例如各通信组的信道质量信息， 来确定其初始通信方案， 该初始通 信方案包括所选择的信道和 /或所确定的信号发送功率。 第二通信组 20 和第三通信组 30 也进行类似的操作， 以确定各自的初始通信方 案。 该频谱共享方法的收敛速度和优化性能主要靠随后的迭代过程 来保证， 因此在确定初始通信方案时可以仅进行简单的信道选择， 而将信号发送功率定为单位功率。 Then, in step S1, the first communication group 10 determines its initial communication scheme based on the information about each communication group, such as the channel quality information of each communication group, the initial communication scheme including the selected channel and/or determined. Signal transmission power. The second communication group 20 and the third communication group 30 also perform similar operations to determine respective initial communication schemes. The convergence speed and optimization performance of the spectrum sharing method are mainly guaranteed by the subsequent iterative process, so that only the simple channel selection can be performed when determining the initial communication scheme, and the signal transmission power is set to unit power.
在步骤 S 1之后是步骤 S11 , 各通信组根据各自的通信方案发送 训练信号， 亦即在各自所选择的信道以单位功率发送训练信号。 这 一步骤是由各通信组同步地执行的， 也就是各通信组在相同的信号 帧发送训练信号。 各通信组的信号帧的同步可以采用同一个外部时 钟来同步， 例如 GPS同步； 或者向同一个通信组同步， 例如第二通 信组 20和第三通信组 30向第一通信组 10同步。 优选地， 本实施例 中采用 GPS同步。
在步骤 Sl l之后是步骤 S12, 第一通信组 10将根据接收到的各 通信组的训练信号来评估第一通信组 10的训练结果， 其可以包括第 一通信组 10的目标性能和方案偏好。 目标性能的一个典型的内容是 数据传输速率。 方案偏好可以包括与共道干扰有关的信息， 例如第 一通信组 10在所共享的频段中的各个信道的共道干扰灵敏度， 共道 干扰灵敏度可以表示为每单位共道干扰的增加所造成的数据传输速 率的下降。 一般来说， 一个信道的共道干扰灵敏度越低， 则选择该 信道的倾向性越高。 第二通信组 20和第三通信组 30将执行与第一 通信组 10类似的评估过程。 Following step S1 is step S11, each communication group transmits training signals according to respective communication schemes, that is, transmits training signals at unit power on respective selected channels. This step is performed synchronously by each communication group, that is, each communication group transmits a training signal in the same signal frame. The synchronization of the signal frames of the respective communication groups can be synchronized by the same external clock, such as GPS synchronization; or synchronized to the same communication group, for example, the second communication group 20 and the third communication group 30 are synchronized to the first communication group 10. Preferably, GPS synchronization is employed in this embodiment. Following step S1, step S12, the first communication group 10 will evaluate the training result of the first communication group 10 according to the received training signals of the respective communication groups, which may include the target performance and the program preference of the first communication group 10. . A typical content of target performance is the data transfer rate. The scheme preferences may include information related to co-channel interference, such as the common channel interference sensitivity of each channel of the first communication group 10 in the shared frequency band, and the common channel interference sensitivity may be expressed as data caused by an increase in unit-channel interference. The drop in transmission rate. In general, the lower the sensitivity of the co-channel interference of a channel, the higher the tendency to select the channel. The second communication group 20 and the third communication group 30 will perform an evaluation process similar to the first communication group 10.
然后， 开始进入迭代过程， 也就是如图所示的步骤 S2。 该步骤 又可以进一步分为以下几个子步骤。 Then, it begins to enter the iterative process, that is, step S2 as shown. This step can be further divided into the following sub-steps.
在子步骤 S21 中， 第一通信组 10将至少部分地根据各通信组的 方案偏好， 采用一个收敛性策略来更新其通信方案。 这时， 上一次 的评估结果就成为了方案更新的先验知识。 换言之， 所述收敛性策 略可以表示为一个函数； 该函数的输入至少包括上一次的评估结果 中各通信组的方案偏好； 该函数的输出包括所选择的信道和 /或所确 定的信号发送功率等内容， 也就是该函数的输出包括一个通信方案。 第二通信组 20和第三通信组 30也进行类似的操作， 以更新各自的 通信方案。 In sub-step S21, the first communication group 10 will update its communication scheme with a convergence policy based at least in part on the scheme preferences of the respective communication groups. At this time, the results of the last evaluation became a priori knowledge of the program update. In other words, the convergence strategy can be expressed as a function; the input of the function includes at least the program preference of each communication group in the previous evaluation result; the output of the function includes the selected channel and/or the determined signal transmission power The content, that is, the output of the function includes a communication scheme. The second communication group 20 and the third communication group 30 also perform similar operations to update the respective communication schemes.
需要理解的是， 因为各通信组在上一次发送训练信号的评估结 果中的方案偏好是方案更新的先验知识， 因此在执行子步骤 S21 之 前还需要一个信息交换步骤， 各通信组相互之间交换上一次发送训 练信号后的评估结果中的方案偏好。 It should be understood that, because the scheme preference of each communication group in the evaluation result of the last transmission training signal is a priori knowledge of the scheme update, an information exchange step is required before performing the sub-step S21, and the communication groups are mutually Exchange the program preferences in the evaluation results after the last training signal was sent.
然后， 在子步骤 S22 中， 各通信组根据各自的更新的通信方案 发送训练信号， 亦即在各自所选择的信道以所确定的信号发送功率 来发送训练信号。 这一步骤是由各通信组同步地执行的， 也就是各 通信组在相同的信号帧发送训练信号。 Then, in sub-step S22, each communication group transmits a training signal according to the respective updated communication scheme, i.e., transmits the training signal at the determined signal transmission power on the respective selected channel. This step is performed synchronously by each communication group, that is, each communication group transmits a training signal in the same signal frame.
然后， 在子步骤 S23中， 第一通信组 10将根据接收到的各通信 组的训练信号来评估第一通信组 10的训练结果， 其可以包括第一通
信组 10的目标性能和方案偏好。 第二通信组 20和第三通信组 30将 执行与第一通信组 10类似的评估过程。 Then, in sub-step S23, the first communication group 10 will evaluate the training result of the first communication group 10 according to the received training signals of the respective communication groups, which may include the first communication Target performance and program preferences for letter group 10. The second communication group 20 and the third communication group 30 will perform an evaluation process similar to the first communication group 10.
子步骤 S241是一个判断步骤。 第一通信组 10将判断各通信组 的目标性能是否满足一个预定条件。第二通信组 20和第三通信组 30 也将分别执行这样的判断。 如果不满足预定条件， 则将重复上述子 步骤 S21、 S22、 S23 , 进行下一次迭代过程。 如果满足预定条件， 则进入子步骤 S242, 各通信组将更新的通信方案确定为各自的通信 方案， 并结束迭代过程。 之后， 各通信组将根据各自的通信方案进 行通信。 Sub-step S241 is a decision step. The first communication group 10 will judge whether or not the target performance of each communication group satisfies a predetermined condition. The second communication group 20 and the third communication group 30 will also perform such determinations, respectively. If the predetermined condition is not satisfied, the above sub-steps S21, S22, S23 will be repeated for the next iterative process. If the predetermined condition is satisfied, the sub-step S242 is entered, and each communication group determines the updated communication scheme as the respective communication scheme, and ends the iterative process. After that, each communication group will communicate according to the respective communication scheme.
因为本发明的目的之一是优化频谱共享社区的整体性能， 所以 一个具体的预定条件可以是各通信组的目标性能的增量均小于一个 预定值。 当满足这一预定条件时， 意味着各通信组的通信性能已经 没有太多的提升空间。 在其他一些实施例中， 也可以为不同的通信 组设定不同的预定值， 即预定条件变为各通信组的目标性能增量小 于各自的预定值。 当采用这样的对目标性能的增量进行判断的预定 条件时，在子步骤 S23和子步骤 S241之间还需要一个信息交换步骤， 各通信组之间彼此交换有关于各自的目标性能增量的信息。 下一次 迭代过程中的子步骤 S21 之前的交换方案偏好的信息交换步驟可以 与这里的信息交换步骤合并到一起， 在子步骤 S241之前来执行。 当 然，如果这两个信息交换步骤分别在判断步骤 S241之前和之后执行， 则在满足预定条件退出迭代过程时， 可以少执行一次交换方案偏好 的信息交换步骤， 从而降低***信令开销。 Since one of the objects of the present invention is to optimize the overall performance of the spectrum sharing community, a specific predetermined condition may be that the increments of the target performance of each communication group are less than a predetermined value. When this predetermined condition is satisfied, it means that there is not much room for improvement in the communication performance of each communication group. In some other embodiments, different predetermined values may be set for different communication groups, i.e., the predetermined condition becomes that the target performance increment of each communication group is less than the respective predetermined value. When such a predetermined condition for judging the increment of the target performance is employed, an information exchange step is required between the sub-step S23 and the sub-step S241, and each communication group exchanges information on the respective target performance increments with each other. . The information exchange step of the exchange scheme preference before the sub-step S21 of the next iteration can be merged with the information exchange step here, and is performed before the sub-step S241. Of course, if the two information exchange steps are performed before and after the decision step S241, respectively, when the iterative process is exited when the predetermined condition is satisfied, the information exchange step of the exchange plan preference may be performed less, thereby reducing the system signaling overhead.
需要注意的是， 因为上述步骤 S1 1 以及每次迭代过程中的子步 骤 S22, 也就是发送训练信号的步骤均是由各通信组同步地执行的， 因此， 优选地， 其余各步骤 /子步骤也是由各通信组同步地执行的。 这样， 各通信组之间可以有规律地执行信息交换的步骤， 从而可以 降低***的信令开销。 It should be noted that, because the above step S1 1 and the sub-step S22 in each iterative process, that is, the steps of transmitting the training signal are all performed synchronously by the respective communication groups, therefore, preferably, the remaining steps/sub-steps It is also performed synchronously by each communication group. In this way, the steps of information exchange can be performed regularly between the communication groups, so that the signaling overhead of the system can be reduced.
本领域技术人员应能理解， 上述实施例中的收敛性策略是示例 性而非限制性的。 概括而言， 在一个频谱共享社区中， 输出包括与
一个通信组的通信方案有关的内容、 输入包括该共享社区的各个通 信组的通信方案的后验知识、 且具有收敛性的函数均可以作为本发 明中所使用的收敛性策略， 因为这样的函数才可用于迭代并能保证 运算结果的收敛。 Those skilled in the art will appreciate that the convergence strategy in the above embodiments is illustrative and not limiting. In summary, in a spectrum sharing community, the output includes The content related to the communication scheme of a communication group, the input of a posteriori knowledge including the communication scheme of each communication group of the shared community, and the convergence function can be used as the convergence strategy used in the present invention because such a function Can be used for iteration and can guarantee the convergence of the operation results.
许多具有快速收敛速度和优良优化性能的频谱共享算法均可以 作为本发明中所使用的收敛性策略。 根据一些仿真实验的结果， 在 确定各通信组的通信方案之前的迭代次数在 3到 10次均是合理的。 然而， 收敛时间过长或优化性能较差的算法却不适合于本发明。 因 为低收敛速度将需要太多次迭代， 从而造成过长的处理时间和过大 的信令开销， 并且使得算法对频谱的变化不敏感。 因此， 优选地， 所述判断子步骤 S241还可以包括： 如果迭代次数超过一个预定自然 数， 例如 10 , 则退出迭代过程。 Many spectrum sharing algorithms with fast convergence speed and excellent optimization performance can be used as the convergence strategy used in the present invention. According to the results of some simulation experiments, the number of iterations before the communication scheme of each communication group is determined to be 3 to 10 times is reasonable. However, algorithms with too long convergence times or poor optimization performance are not suitable for the present invention. Because low convergence speeds will require too many iterations, resulting in excessive processing time and excessive signaling overhead, and making the algorithm insensitive to spectral changes. Therefore, preferably, the determining sub-step S241 may further include: if the number of iterations exceeds a predetermined natural number, for example, 10, exiting the iterative process.
在许多优化理论的帮助下， 可以设计出具有合适的收敛速度和 优化性能的分布式频谱共享算法， 例如博弈论、 凸优化理论、 组合 优化理论。 在这些算法中， 各通信组可能具有各自的目标函数或个 体函数。 各通信组分布地而非独立地制定各自的通信方案， 以最大 化各自的目标性能。 通过迭代的通信方案更新过程， ***的整体通 信性能得到了优化， 频谱利用率得到了提高。 这些算法的收敛和优 化的性能可以由合适的目标函数设计和理论模型来确保。 With the help of many optimization theories, distributed spectrum sharing algorithms with appropriate convergence speed and optimization performance can be designed, such as game theory, convex optimization theory, and combinatorial optimization theory. In these algorithms, each communication group may have its own objective function or individual function. Each communication group develops its own communication schemes, rather than independently, to maximize their respective target performance. Through the iterative communication scheme update process, the overall communication performance of the system is optimized and the spectrum utilization is improved. The convergence and optimization performance of these algorithms can be ensured by appropriate objective function design and theoretical models.
在上述实施例的一个变化例中， 可以省略步骤 S1之前的信息交 换步骤， 各通信组可以仅根据自身的有关信息， 尤其是关于信道质 量的信息， 来确定其初始通信方案。 通过随后的迭代的方案更新过 程来优化***的整体通信性能， 尤其是频谱利用率。 In a variation of the above embodiment, the information exchange step prior to step S1 may be omitted, and each communication group may determine its initial communication scheme based only on its own related information, particularly information about channel quality. The overall communication performance of the system, especially the spectrum utilization, is optimized by a subsequent iterative solution update process.
总而言之， 上述频谱共享方法均由一个频谱共享社区中的各通 信组一起来实现。 对于每一个通信组而言， 实现该频谱共享方法包 括一个第一次初始通信方案制定过程以及至少一次迭代的通信方案 更新过程。 上述方法应用迭代的过程来引导各通信组的通信方案以 收敛到最优的组合。 在上述方法中， 各通信组基于最大化频谱利用 率的原则来更新其通信方案。 这些通信方案通过发送训练信号来评
估。 评估的结果通过消息交换被告知所有通信组， 这样的反馈作为 先验知识用于下一次迭代。 在上述方法中， 分布的通信组在空间接 ***换消息， 而无需依赖骨干网络。 In summary, the above spectrum sharing methods are all implemented by each communication group in a spectrum sharing community. For each communication group, implementing the spectrum sharing method includes a first initial communication plan formulation process and at least one iteration of the communication plan update process. The above method applies an iterative process to direct the communication schemes of the various communication groups to converge to the optimal combination. In the above method, each communication group updates its communication scheme based on the principle of maximizing spectrum utilization. These communication schemes are evaluated by sending training signals. Estimate. The results of the evaluation are communicated to all communication groups by message exchange, and such feedback is used as prior knowledge for the next iteration. In the above method, the distributed communication group exchanges messages on the spatial interface without relying on the backbone network.
上述方法典型地可以通过软件程序来实现。 这样的软件程序内
The above method can typically be implemented by a software program. Within such a software program
本领域技术人员应能理解， 上述实施例均是示例性而非限制性 益效果。 本领域技术人员在研究附图、 说明书及权利要求书的基础 上， 应能理解并实现所揭示的实施例的其他变化的实施例。 在权利 要求书中， 术语 "包括" 并不排除其他装置或步骤； 不定冠词 "一 个" 不排除多个； 术语 "第一" 、 "第二" 用于标示名称而非用于 表示任何特定的顺序。 权利要求中的任何附图标记均不应被理解为 对保护范围的限制。 权利要求中出现的多个部分的功能可以由一个 单独的硬件或软件模块来实现。 某些技术特征出现在不同的从属权 利要求中并不意味着不能将这些技术特征进行组合以取得有益效 果。
Those skilled in the art will appreciate that the above-described embodiments are illustrative and not limiting. Other variations of the disclosed embodiments can be understood and effected by those skilled in the <RTIgt; In the claims, the word "comprising" does not exclude other means or steps. The indefinite article "a" does not exclude a plurality. order of. Any reference signs in the claims should not be construed as limiting the scope of the invention. The functions of the various parts appearing in the claims can be implemented by a single hardware or software module. The mere fact that certain technical features are present in different sub-claims does not mean that these technical features are not combined to achieve a beneficial effect.
Claims
1.一种用于无线分布式网络的一个第一通信组的频谱共享方法， 该第一通信组与其他至少一个通信组组成一个共享频谱的共享社 区， 各通信组包括至少两个通信终端， 所述方法包括以下步骤： A spectrum sharing method for a first communication group of a wireless distributed network, the first communication group and the other at least one communication group form a shared community sharing a spectrum, and each communication group includes at least two communication terminals. The method includes the following steps:
A. 确定第一通信组的初始通信方案； A. determining an initial communication scheme of the first communication group;
B. 根据各通信组的通信方案的评估结果， 采用一个收敛性策略 来迭代地更新第一通信组的通信方案， 直到满足一个预定条件。 B. According to the evaluation result of the communication scheme of each communication group, a convergence strategy is used to iteratively update the communication scheme of the first communication group until a predetermined condition is satisfied.
2， 根据权利要求 1所述的方法， 其特征在于， 所述步骤 A和步 骤 B之间还包括步骤： 2. The method according to claim 1, wherein the step A and the step B further comprise the steps of:
- 根据第一通信组的初始通信方案发送训练信号； - transmitting a training signal according to an initial communication scheme of the first communication group;
- 根据接收到的所述共享社区中各通信组的训练信号来评估第 一通信组的训练结果， 所述训练结果包括第一通信组的目标性能和 方案偏好。 - evaluating the training results of the first communication group based on the received training signals of the communication groups in the shared community, the training results including the target performance and the program preferences of the first communication group.
3. 根据权利要求 2所述的方法， 其特征在于， 所述步骤 B包括： 3. The method according to claim 2, wherein the step B comprises:
B1. 至少部分地根据该共享社区的各通信组的方案偏好， 采用 所述收敛性策略来更新第一通信组的通信方案， 所述更新的通信方 案包括信道选择和发送功率分配； B1. The communication scheme of the first communication group is updated by using the convergence policy at least in part according to a scheme preference of each communication group of the shared community, where the updated communication scheme includes channel selection and transmission power allocation;
B2. 根据第一通信组的更新的通信方案发送训练信号； B2. transmitting a training signal according to the updated communication scheme of the first communication group;
B3. 根据接收到的所述共享社区中各通信组的训练信号来评估 第一通信组的训练结果， 所述训练结果包括第一通信组的目标性能 和方案偏好； B3. The training result of the first communication group is evaluated according to the received training signals of each communication group in the shared community, where the training result includes target performance and a program preference of the first communication group;
B4. 如果该共享社区内的各通信组的目标性能满足一个预定条 件， 则将更新的通信方案确定为第一通信组的通信方案； 如果不满 足所述预定条件， 则重新执行步骤 Bl、 B2、 B3。 B4. If the target performance of each communication group in the shared community satisfies a predetermined condition, the updated communication scheme is determined as the communication scheme of the first communication group; if the predetermined condition is not met, steps B1 and B2 are re-executed , B3.
4. 根据权利要求 1至 3中任一项所述的方法， 其特征在于， 所 述步骤 A之前还包括： The method according to any one of claims 1 to 3, wherein before the step A, the method further comprises:
- 向该共享社区的其他通信组发送第一通信组的有关信息，并接 收来自所述其他通信组的有关信息； 所述步骤 A 中根据该共享社区的各通信组的有关信息来确定第 一通信组的初始通信方案。 - transmitting information about the first communication group to other communication groups of the shared community and receiving relevant information from the other communication groups; In the step A, an initial communication scheme of the first communication group is determined according to related information of each communication group of the shared community.
5. 根据权利要求 3所述的方法，其特征在于， 所述步骤 Bl、 B2、 B3是由第一通信组与所述共享社区中的其他通信组同步地执行。 5. The method according to claim 3, wherein the steps Bl, B2, B3 are performed by the first communication group in synchronization with other communication groups in the shared community.
6. 根据权利要求 5所述的方法， 其特征在于， 所述共享社区中 的各通信组釆用 GPS同步。 6. The method according to claim 5, wherein each communication group in the shared community uses GPS synchronization.
7. 根据权利要求 2至 3中任一项所述的方法， 其特征在于， 所 述预定条件为： 所述共享社区的各通信组的目标性能增量均小于一 个预定值。 The method according to any one of claims 2 to 3, wherein the predetermined condition is: a target performance increment of each communication group of the shared community is less than a predetermined value.
8. 根据权利要求 2至 3中任一项所述的方法， 其特征在于， 所 述步骤 B4还包括： The method according to any one of claims 2 to 3, wherein the step B4 further comprises:
如果迭代次数超过一个预定自然数， 则终止该迭代过程。 If the number of iterations exceeds a predetermined natural number, the iterative process is terminated.
9. 根据权利要求 2至 3中任一项所述的方法， 其特征在于， 所 述收敛性策略是根据以下理论之一制定的： 博弈论、 凸优化理论、 组合优化理论。 The method according to any one of claims 2 to 3, characterized in that the convergence strategy is formulated according to one of the following theories: game theory, convex optimization theory, combined optimization theory.
10. 根据权利要求 2至 3中任一项所述的方法， 其特征在于， 所 述无线分布式网络是 ad hoc网络。 The method according to any one of claims 2 to 3, characterized in that the wireless distributed network is an ad hoc network.
11. 一种终端设备， 用于实现权利要求 1至 10中任一项所述的 方法中的第一通信组， 其特征在于， 根据所确定的第一通信组的通 信方案来进行通信。 A terminal device for implementing a first communication group in the method of any one of claims 1 to 10, characterized in that the communication is performed in accordance with the determined communication scheme of the first communication group.
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