CN101841774B

Movatterモバイル変換

Info

Publication number: CN101841774B
Application number: CN2010101083323A
Authority: CN
Inventors: 盛煜; 王健全; 吕召彪
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2010-02-08
Filing date: 2010-02-08
Publication date: 2013-06-05
Anticipated expiration: 2030-02-08
Also published as: CN101841774A

Abstract

本发明涉及基于移动网络的动态MBSFN判决方法及装置。该基于移动网络的动态MBSFN判决方法包括：步骤1，检测本小区MBMS用户，得到本小区MBMS用户总数；如果本小区MBMS用户总数大于0，执行步骤2，如果本小区MBMS用户总数等于0，执行步骤3；步骤2，若邻小区开启MBSFN，则本小区开启MBSFN，检测本小区低于信噪比门限的MBMS用户，得到本小区低于信噪比门限的MBMS用户数；若邻小区关闭MBSFN，则本小区采用单小区模式进行MBMS传输；步骤3，E-Node B根据接收到的邻小区MBMS用户总数以及邻小区低于信噪比门限的MBMS用户数判决本小区开启MBSFN或关闭MBSFN。本发明对小区MBSFN传输的动态开关或资源重新分配，可以有效地节省网络资源、降低无谓的功率发射对其它业务产生的干扰，有助于频谱效率的提高。

The invention relates to a mobile network-based dynamic MBSFN decision method and device. The mobile network-based dynamic MBSFN judgment method includes: step 1, detecting the MBMS users in the local cell, and obtaining the total number of MBMS users in the cell; if the total number of MBMS users in the cell is greater than 0, perform step 2, and if the total number of MBMS users in the cell is equal to 0, execute Step 3; Step 2, if the adjacent cell opens MBSFN, then this cell opens MBSFN, detects the MBMS users in this cell below the SNR threshold, and obtains the number of MBMS users in this cell below the SNR threshold; if the adjacent cell closes MBSFN , then the cell adopts the single-cell mode for MBMS transmission; step 3, the E-Node B decides whether to enable MBSFN or disable MBSFN in the cell based on the received total number of MBMS users in neighboring cells and the number of MBMS users in neighboring cells lower than the SNR threshold. The present invention can effectively save network resources, reduce the interference of unnecessary power transmission to other services by dynamically switching or redistributing resources for MBSFN transmission in a cell, and contribute to the improvement of spectral efficiency.

Description

Translated fromChinese

基于移动网络的动态MBSFN判决方法及装置Dynamic MBSFN decision method and device based on mobile network

技术领域technical field

本发明涉及移动网络，尤其涉及基于移动网络的动态MBSFN判决方法及装置。The invention relates to a mobile network, in particular to a mobile network-based dynamic MBSFN decision method and device.

背景技术Background technique

增强的多媒体广播组播业务(E-MBMS)在接入网中引入了单频网(SFN)传输方式，即多媒体广播单频网(MBSFN)传输方式，就是在同一时间以相同频率在多个小区进行同步传输。使用这种传输方式可以节约频率资源，提高频谱利用率。同时这种多小区同频传输所带来的分集效果可以解决盲区覆盖等问题，增强接收的可靠性，提高覆盖率。The Enhanced Multimedia Broadcast Multicast Service (E-MBMS) introduces the single frequency network (SFN) transmission mode in the access network, that is, the multimedia broadcast single frequency network (MBSFN) transmission mode, which is to use the same frequency at the same time in multiple Cells transmit synchronously. Using this transmission mode can save frequency resources and improve spectrum utilization. At the same time, the diversity effect brought by the multi-cell co-frequency transmission can solve problems such as blind area coverage, enhance the reliability of reception, and improve the coverage rate.

考虑到在MBSFN组网当中，若将一部分MBSFN小区关闭MBMS的业务传输，则可以将这些小区内的无线资源重新进行规划，用于其他业务的传输。对于动态MBSFN，位于MBSFN区域内的用户终端若期望接收MBMS，则通过MBSFN的区域，该用户可以得到足够质量信号覆盖；对于MBSFN部分小区，MBSFN区域并不需要这些小区为联合覆盖做出贡献，这时，这些小区可以将用于MBMS传输的无线资源重新规划，用以传输其他业务。但是，在这种情况下，本小区就会给其他MBSFN邻小区带来干扰，在设计过程中尽量保持这种干扰最低。Considering that in the MBSFN network, if some MBSFN cells are closed for MBMS service transmission, the radio resources in these cells can be re-planned for the transmission of other services. For dynamic MBSFN, if a user terminal located in the MBSFN area expects to receive MBMS, the user can get sufficient quality signal coverage through the MBSFN area; for some MBSFN cells, the MBSFN area does not require these cells to contribute to joint coverage. At this time, these cells can re-plan the radio resources used for MBMS transmission to transmit other services. However, in this case, this cell will bring interference to other MBSFN neighboring cells, so try to keep this interference to a minimum during the design process.

目前，对于MBSFN动态传输模式判断并没有一种合理、有效的方法。多数设置都是采用半静态的方法，即预先配置MBSFN小区传输状态。这种方式不能适应小区内用户变化的需求，当小区内MBMS用户发生变化时，半静态的配置方法无法对这一状态进行实时跟踪，从而导致对MBSFN的配置不合理，造成资源浪费以及对其他业务带来干扰等问题。At present, there is no reasonable and effective method for judging the dynamic transmission mode of MBSFN. Most settings adopt a semi-static method, that is, pre-configure the transmission status of the MBSFN cell. This method cannot adapt to the changing needs of users in the cell. When the MBMS users in the cell change, the semi-static configuration method cannot track this state in real time, which leads to unreasonable configuration of MBSFN, waste of resources and damage to other users. Business disruption and other issues.

统计用户数是判断是否开启本小区的MBSFN传输的重要步骤之一。在申请号为：200810056286.X，专利名称为《一种演进型多媒体广播多播业务计数方法、系统及设备》的中国专利申请中公开了一种E-MBMS的计数方法，该方法包括：E-Node B决定对E-MBMS业务发起计数过程时，向各个终端发送计数请求信令以及相应的概率因子；终端接收到所述计数请求信令以及概率因子后，确定自身发送相应的计数序列时，根据自身对应的下行时隙的相对位置，发送相应的计数序列；E-Node B对接收到的终端发来的所述计数序列进行检测，统计出超过功率门限的峰值数目。以下简称这种计数方法为E-MBMS的计数方法。Counting the number of users is one of the important steps for judging whether to enable MBSFN transmission in the cell. In the Chinese patent application with the application number: 200810056286.X and the patent name "A Method, System and Equipment for Evolved Multimedia Broadcast and Multicast Service Counting", a method for counting E-MBMS is disclosed. The method includes: E -When the Node B decides to initiate a counting process for the E-MBMS service, it sends a counting request signaling and the corresponding probability factor to each terminal; after receiving the counting request signaling and the probability factor, the terminal determines that it sends the corresponding counting sequence , according to the relative position of its corresponding downlink time slot, send the corresponding counting sequence; E-Node B detects the counting sequence received from the terminal, and counts the number of peaks exceeding the power threshold. Hereinafter, this counting method is referred to as the counting method of E-MBMS.

由上述内容可以看出，该专利申请中提供了用于E-MBMS的计数统计方法。同时，该专利申请通过简单的门限值决定是否进行多小区传输或单小区传输。但是，是否开启本小区的MBSFN传输，不仅需要考虑到本小区用户数目，还需要考虑对MBSFN整体的贡献程度，这种简单的判决方式并不能满足网络的需求。It can be seen from the above content that this patent application provides a counting and statistical method for E-MBMS. At the same time, this patent application determines whether to perform multi-cell transmission or single-cell transmission through a simple threshold value. However, whether to enable MBSFN transmission in the local cell needs to consider not only the number of users in the local cell, but also the degree of contribution to the overall MBSFN. This simple decision method cannot meet the requirements of the network.

发明内容Contents of the invention

为了解决上述的技术问题，提供了基于移动网络的动态MBSFN判决方法及装置，其目的在于，采用E-MBMS的计数方法来检测邻小区的MBMS终端的近似分布，根据此类信息，本小区可以计算出本地小区对邻小区的贡献度属性；通过对贡献度的计算，即可以判断当前小区的MBSFN传输开关是否开启，同时，在不影响MBSFN区域业务正常开展的情况下，本小区可将MBSFN资源进行重新分配，提供给其他业务使用，提高频谱效率。In order to solve the above technical problems, a mobile network-based dynamic MBSFN decision method and device are provided. The purpose is to use the E-MBMS counting method to detect the approximate distribution of MBMS terminals in neighboring cells. According to such information, the cell can Calculate the contribution degree attribute of the local cell to the neighboring cell; through the calculation of the contribution degree, it can be judged whether the MBSFN transmission switch of the current cell is turned on. Resources are redistributed and provided to other services to improve spectrum efficiency.

本发明提供了基于移动网络的动态MBSFN判决方法，包括：The invention provides a dynamic MBSFN judgment method based on a mobile network, including:

步骤1，检测本小区MBMS用户，得到本小区MBMS用户总数；如果本小区MBMS用户总数大于0，执行步骤2，如果本小区MBMS用户总数等于0，执行步骤3；Step 1, detect the MBMS users in the local community, and obtain the total number of MBMS users in the local community; if the total number of MBMS users in the local community is greater than 0, perform step 2, and if the total number of MBMS users in the local community is equal to 0, perform step 3;

步骤2，若邻小区开启MBSFN，则本小区开启MBSFN，检测本小区低于信噪比门限的MBMS用户，得到本小区低于信噪比门限的MBMS用户数；若邻小区关闭MBSFN，则本小区采用单小区模式进行MBMS传输；Step 2: If the adjacent cell opens MBSFN, then the local cell opens MBSFN, detects the MBMS users in the local cell below the SNR threshold, and obtains the number of MBMS users in the local cell below the SNR threshold; if the adjacent cell closes MBSFN, the local cell The cell adopts single cell mode for MBMS transmission;

步骤3，邻小区MBMS用户总数大于S，并且邻小区低于信噪比门限的MBMS用户数大于D时，本小区MBSFN开启；邻小区MBMS用户总数大于S，并且邻小区低于信噪比门限的MBMS用户数小于D时，本小区MBSFN关闭，并且使无线资源处于空闲状态；邻小区MBMS用户总数小于S，并且邻小区低于信噪比门限的MBMS用户数大于D时，本小区MBSFN关闭，并且MBSFN使用的无线资源处于空闲状态；邻小区MBMS用户总数小于S，并且邻小区低于信噪比门限的MBMS用户数小于D时，本小区MBSFN关闭，传输MBSFN使用的无线资源可重新分配；Step 3: When the total number of MBMS users in the neighboring cell is greater than S, and the number of MBMS users in the neighboring cell is lower than the SNR threshold is greater than D, the MBSFN in the current cell is enabled; the total number of MBMS users in the neighboring cell is greater than S, and the number of MBMS users in the neighboring cell is lower than the SNR threshold When the number of MBMS users in the neighboring cell is less than D, the MBSFN of the local cell is turned off, and the wireless resources are idle; when the total number of MBMS users in the neighboring cell is less than S, and the number of MBMS users in the neighboring cell is lower than the SNR threshold is greater than D, the MBSFN of the local cell is turned off , and the radio resources used by MBSFN are in an idle state; when the total number of MBMS users in neighboring cells is less than S, and the number of MBMS users in neighboring cells below the SNR threshold is less than D, the MBSFN of this cell is closed, and the radio resources used for transmitting MBSFN can be reallocated ;

其中，S为热点小区MBMS接收用户统计值，D为不满意MBMS用户数统计下限。Among them, S is the statistical value of MBMS receiving users in the hotspot cell, and D is the statistical lower limit of the number of unsatisfied MBMS users.

步骤2中，本小区的E-Node B将本小区置于开启MBSFN或者关闭MBSFN的状态，邻小区的E-Node B将该邻小区开启MBSFN或关闭MBSFN的状态发送到本小区；步骤3中，邻小区的E-Node B将邻小区MBMS用户总数和邻小区低于信噪比门限的MBMS用户数发送到本小区。In step 2, the E-Node B of this cell puts this cell into the state of opening MBSFN or closing MBSFN, and the E-Node B of the adjacent cell sends the state of opening MBSFN or closing MBSFN of the adjacent cell to this cell; in step 3 , the E-Node B of the adjacent cell sends the total number of MBMS users in the adjacent cell and the number of MBMS users in the adjacent cell below the SNR threshold to the current cell.

步骤1中，根据预先设置的初始概率因子，利用E-MBMS的计数方法得到本小区MBMS用户数。In step 1, according to the preset initial probability factor, the number of MBMS users in the cell is obtained by using the counting method of E-MBMS.

步骤1具体包括：Step 1 specifically includes:

步骤10，E-Node B设置初始概率因子；Step 10, E-Node B sets the initial probability factor;

步骤11，E-Node B发送初始概率因子及存在性检测的计数请求；Step 11, E-Node B sends the initial probability factor and the counting request of presence detection;

步骤12，MBMS用户端收到所述计数请求信令及概率因子后，完成概率测试。Step 12: After receiving the counting request signaling and the probability factor, the MBMS UE completes the probability test.

步骤13，通过概率测试的MBMS用户端根据自身相应的下行时隙的相对位置，发送相应的计数序列；Step 13, the MBMS user end that passes the probability test sends a corresponding counting sequence according to the relative position of its corresponding downlink time slot;

步骤14，E-Node B对MBMS用户端发来的所述序列进行相关检测，统计出超过门限值的峰值数目，即本小区MBMS用户总数。Step 14, the E-Node B performs correlation detection on the sequence sent by the MBMS user end, and counts the number of peaks exceeding the threshold value, that is, the total number of MBMS users in the cell.

步骤2中，根据预先设置的信噪比门限，利用E-MBMS的计数方法得到本小区低于信噪比门限的MBMS用户数。In step 2, according to the preset SNR threshold, the counting method of E-MBMS is used to obtain the number of MBMS users in the cell below the SNR threshold.

根据预先设置的信噪比门限，利用E-MBMS的计数方法得到本小区低于信噪比门限的MBMS用户数具体包括：According to the preset signal-to-noise ratio threshold, the number of MBMS users in the cell below the signal-to-noise ratio threshold is obtained by using the counting method of E-MBMS, which specifically includes:

步骤20，E-Node B设置信噪比门限；Step 20, E-Node B sets the SNR threshold;

步骤21，E-Node B发送低于信噪比门限的MBMS用户的计数请求；Step 21, E-Node B sends the counting request of MBMS users lower than the SNR threshold;

步骤22，MBMS用户端根据接收的低于信噪比门限的MBMS用户的计数请求对信噪比进行判决；Step 22, the MBMS user terminal judges the signal-to-noise ratio according to the received counting requests of MBMS users lower than the signal-to-noise ratio threshold;

步骤23，低于信噪比门限的MBMS用户端完成概率测试；Step 23, MBMS UEs below the SNR threshold complete the probability test;

步骤24，通过概率测试的MBMS用户端响应网络端低信噪比的计数请求；Step 24, the MBMS user end that passes the probability test responds to the counting request of the low SNR of the network end;

步骤25，E-Node B根据MBMS用户端响应的计数序列进行相关检测，估算低于信噪比门限的MBMS用户数。Step 25, E-Node B performs correlation detection according to the counting sequence of MBMS user end responses, and estimates the number of MBMS users lower than the SNR threshold.

本发明提供了基于移动网络的动态MBSFN判决装置，包括MBMS用户端和E-Node B，The present invention provides a dynamic MBSFN judgment device based on a mobile network, including an MBMS user terminal and an E-Node B,

E-Node B，用于检测本小区MBMS用户，得到本小区MBMS用户总数；E-Node B is used to detect MBMS users in this cell, and obtain the total number of MBMS users in this cell;

在本小区MBMS用户总数大于0时，若邻小区开启MBSFN，则本小区开启MBSFN，检测本小区低于信噪比门限的MBMS用户，得到本小区低于信噪比门限的MBMS用户数；若邻小区关闭MBSFN，则本小区采用单小区模式进行MBMS传输；When the total number of MBMS users in this cell is greater than 0, if the adjacent cell opens MBSFN, then this cell starts MBSFN, detects the MBMS users in this cell that are lower than the SNR threshold, and obtains the number of MBMS users in this cell that is lower than the SNR threshold; if If the adjacent cell closes MBSFN, the cell will use the single cell mode for MBMS transmission;

邻小区MBMS用户总数大于S，并且邻小区低于信噪比门限的MBMS用户数大于D时，本小区MBSFN开启；邻小区MBMS用户总数大于S，并且邻小区低于信噪比门限的MBMS用户数小于D时，本小区MBSFN关闭，并且使无线资源处于空闲状态；邻小区MBMS用户总数小于S，并且邻小区低于信噪比门限的MBMS用户数大于D时，本小区MBSFN关闭，并且MBSFN使用的无线资源处于空闲状态；邻小区MBMS用户总数小于S，并且邻小区低于信噪比门限的MBMS用户数小于D时，本小区MBSFN关闭，传输MBSFN使用的无线资源可重新分配；When the total number of MBMS users in the neighboring cell is greater than S, and the number of MBMS users in the neighboring cell is lower than the SNR threshold is greater than D, MBSFN in the current cell is enabled; the total number of MBMS users in the neighboring cell is greater than S, and the MBMS user in the neighboring cell is lower than the SNR threshold When the number is less than D, the MBSFN of this cell is closed, and the wireless resources are idle; when the total number of MBMS users in the neighboring cell is less than S, and the number of MBMS users in the neighboring cell is lower than the SNR threshold is greater than D, the MBSFN of this cell is closed, and the MBSFN The radio resources used are in an idle state; when the total number of MBMS users in the neighboring cell is less than S, and the number of MBMS users in the neighboring cell is less than the SNR threshold is less than D, the MBSFN of this cell is closed, and the radio resources used for transmitting MBSFN can be re-allocated;

本小区的E-Node B将本小区置于开启MBSFN或者关闭MBSFN的状态，邻小区的E-Node B将该邻小区开启MBSFN或关闭MBSFN的状态发送到本小区；邻小区的E-Node B还将邻小区MBMS用户总数和邻小区低于信噪比门限的MBMS用户数发送到本小区。The E-Node B of the local cell puts the local cell in the state of enabling MBSFN or disabling MBSFN, and the E-Node B of the neighboring cell sends the state of enabling MBSFN or disabling MBSFN of the neighboring cell to the local cell; the E-Node B of the neighboring cell It also sends the total number of MBMS users in neighboring cells and the number of MBMS users in neighboring cells lower than the SNR threshold to the local cell.

E-Node B，用于根据预先设置的初始概率因子，利用E-MBMS的计数方法得到本小区MBMS用户数。The E-Node B is used to obtain the number of MBMS users in the cell by using the E-MBMS counting method according to the preset initial probability factor.

E-Node B，用于设置初始概率因子；发送初始概率因子及存在性检测的计数请求；E-Node B, used to set the initial probability factor; send the initial probability factor and the counting request of existence detection;

MBMS用户端，用于完成概率测试；通过概率测试的用户端根据自身相应的下行时隙的相对位置，发送相应的计数序列；The MBMS user end is used to complete the probability test; the user end that passes the probability test sends a corresponding counting sequence according to the relative position of its corresponding downlink time slot;

E-Node B，用于根据MBMS用户端响应的计数序列进行相关检测，估算本小区MBMS用户数。E-Node B is used to perform correlation detection according to the counting sequence of MBMS user terminal responses, and estimate the number of MBMS users in the cell.

E-Node B，用于根据预先设置的信噪比门限，利用E-MBMS的计数方法得到本小区低于信噪比门限的MBMS用户数。The E-Node B is used to obtain the number of MBMS users in the cell below the SNR threshold by using the E-MBMS counting method according to the preset SNR threshold.

E-Node B，用于设置信噪比门限；发送低于信噪比门限的MBMS用户的计数请求；E-Node B is used to set the signal-to-noise ratio threshold; send counting requests of MBMS users lower than the signal-to-noise ratio threshold;

MBMS用户端，用于根据接收的低于信噪比门限的MBMS用户的计数请求对信噪比进行判决；低于信噪比门限的MBMS用户端完成概率测试；通过概率测试的MBMS用户端响应网络端低信噪比的计数请求；The MBMS user end is used to judge the SNR according to the received counting request of MBMS users lower than the SNR threshold; the MBMS user end lower than the SNR threshold completes the probability test; the MBMS user end that passes the probability test responds Counting requests with low signal-to-noise ratio on the network side;

E-Node B，用于根据MBMS用户端响应的计数序列进行相关检测，估算低于信噪比门限的MBMS用户数。E-Node B is used to perform correlation detection according to the counting sequence of MBMS user end responses, and estimate the number of MBMS users below the SNR threshold.

本发明通过动态MBSFN判决方法，可以使MBMS传输范围内的各小区实时判断是否采用MBSFN传输方式进行传输。对小区MBSFN传输的动态开关或资源重新分配，可以有效地节省网络资源、降低无谓的功率发射对其它业务产生的干扰，有助于频谱效率的提高。与半静态预先配置MBSFN小区的方法相比，动态传输模式的优势主要在于可以提高MBMS小区内的频谱利用率，提高网络规划速度。通过动态的MBSFN，本地小区的无线资源可以被有效地节省，当对邻小区没有较大影响是还可以将该资源重新分配给其他业务进行使用。Through the dynamic MBSFN judging method, the present invention can make each sub-district within the MBMS transmission range judge in real time whether to use the MBSFN transmission mode for transmission. The dynamic switch or resource reallocation of MBSFN transmission in the cell can effectively save network resources, reduce the interference of unnecessary power transmission to other services, and contribute to the improvement of spectrum efficiency. Compared with the method of semi-statically pre-configuring MBSFN cells, the advantage of the dynamic transmission mode mainly lies in that it can improve the spectrum utilization rate in the MBMS cell and improve the speed of network planning. Through the dynamic MBSFN, the radio resources of the local cell can be effectively saved, and the resource can be reallocated to other services for use when there is no great impact on neighboring cells.

附图说明Description of drawings

图1为本发明提供的动态MBSFN判决方法的主要流程图；Fig. 1 is the main flowchart of the dynamic MBSFN judgment method provided by the present invention;

图2为E-MBMS的计数流程图；Fig. 2 is the counting flowchart of E-MBMS;

图3为本发明提供的基于信噪比的用户分布检测流程图；Fig. 3 is the flow chart of user distribution detection based on signal-to-noise ratio provided by the present invention;

图4为本发明提供的基于移动网络的动态MBSFN判决方法流程图。FIG. 4 is a flow chart of the mobile network-based dynamic MBSFN decision method provided by the present invention.

具体实施方式Detailed ways

本发明通过对本小区MBMS传输的本地存在性检测以及本小区对邻小区的贡献度计算，综合考虑给出了对动态MBSFN的传输状态进行判断的方法。The present invention provides a method for judging the dynamic MBSFN transmission state through comprehensive consideration of the local existence detection of the MBMS transmission in the local cell and the calculation of the contribution degree of the local cell to the adjacent cell.

MBSFN的开通主要保证MBMS连续的需要，在任意给定的区域，由于MBSFN区域的引入可以确保MBMS覆盖的充足性。目前，MBSFN的定义延续了Rel.6MBMS的规定，当用户在小区间移动时，不需要任何的切换过程就可以完成MBMS的无缝连接，同时仍然允许接收MBMS的用户终端处于无线资源控制空闲状态RRC_Idle，而不用转移到无线资源控制连接状态RRC_Connected。The opening of MBSFN mainly ensures the continuous requirement of MBMS. In any given area, the introduction of MBSFN area can ensure the sufficiency of MBMS coverage. At present, the definition of MBSFN continues the requirements of Rel.6 MBMS. When the user moves between cells, the seamless connection of MBMS can be completed without any handover process, and at the same time, the user terminal receiving MBMS is still allowed to be in the radio resource control idle state. RRC_Idle without transitioning to the radio resource control connected state RRC_Connected.

本发明中的动态MBSFN模式转换可以为每个小区选择最优的传输模式，包括MBSFN传输以及单小区传输。在MBMS开展期间，判决过程可以基于MBMS区域内的接收用户空间分布信息完成，该动态过程可以重复进行。当所传输的MBMS覆盖区域仅为一部分小区，且部分小区间隔独立时，动态的MBSFN判决过程即被触发，这样不需要参与MBSFN覆盖的小区就节省可用的无线资源，用以传输其他业务；而仍需要覆盖MBMS的小区没有邻小区联合时，可以转换成单小区的传输方式。The dynamic MBSFN mode conversion in the present invention can select the optimal transmission mode for each cell, including MBSFN transmission and single cell transmission. During the development of MBMS, the judgment process can be completed based on the spatial distribution information of receiving users in the MBMS area, and this dynamic process can be repeated. When the transmitted MBMS coverage area is only a part of the cells, and the intervals between some cells are independent, the dynamic MBSFN decision process is triggered, so that the cells that do not need to participate in the MBSFN coverage can save available radio resources for the transmission of other services; and still When the cell that needs to cover MBMS has no adjacent cells, it can be converted to a single cell transmission mode.

本发明主要提出了动态MBSFN的判决方法，通过该方法可以有效地判断MBSFN的开关状态。对一个MBSFN区域来说(该区域内小区都采用MBSFN传输方式发送业务，构成MBMS单频网络)，区域内的小区有两种状态：MBSFN打开以及MBSFN关闭。当MBSFN关闭时，可以通过准则判断是否将本小区的资源用以传输其他的点到点业务。The invention mainly proposes a judgment method of the dynamic MBSFN, through which the switch state of the MBSFN can be judged effectively. For an MBSFN area (the cells in this area all use the MBSFN transmission mode to send services, forming an MBMS single frequency network), the cells in the area have two states: MBSFN on and MBSFN off. When the MBSFN is closed, it can be judged by the criteria whether to use the resources of the cell to transmit other point-to-point services.

本发明提供的动态MBSFN判决方法给出了实时对MBSFN传输状态进行判决的准则及算法流程，其中包括本地存在性检测、低信噪比用户检测算法以及本小区对邻小区贡献度的计算方法。The dynamic MBSFN judging method provided by the present invention provides the criterion and algorithm flow for judging the MBSFN transmission status in real time, including local presence detection, low signal-to-noise ratio user detection algorithm and the calculation method of the contribution degree of the local cell to the adjacent cell.

本发明中的本地存在性检测方法通过E-MBMS的计数方法完成对小区内接收MBMS的用户进行检测，存在性检测做为开展MBMS传输的重要因素也是开启MBSFN的前提。The local presence detection method in the present invention completes the detection of users receiving MBMS in the cell through the counting method of E-MBMS, and the presence detection is an important factor for carrying out MBMS transmission and also a prerequisite for opening MBSFN.

本发明的低信噪比用户检测通过E-MBMS的计数方法实现，MBMS低信噪比用户的数量与MBMS总用户数量联合可对用户的分布情况估算，以实现小区贡献度计算。The low SNR user detection of the present invention is realized by the counting method of E-MBMS, the number of MBMS low SNR users combined with the total number of MBMS users can estimate the distribution of users, so as to realize the calculation of cell contribution.

本发明的小区贡献度计算方法根据邻小区接收MBMS用户分布折中考虑完成估算。邻小区接收MBMS用户分布情况由MBMS总用户数及低信噪比MBMS用户数决定。The calculation method of the cell contribution degree of the present invention completes the estimation according to the compromise consideration of the distribution of MBMS users in the neighboring cells. The distribution of MBMS users in adjacent cells is determined by the total number of MBMS users and the number of MBMS users with low SNR.

本发明的动态判决算法根据本小区对邻小区的贡献度以及本地存在对MBSFN开启状态进行判决。若本小区存在MBMS用户，可根据邻小区的MBSFN开启状态决定(邻小区的MBSFN开启状态可以通过邻小区交互得到)是否开启本地MBSFN传输或单小区传输；若本小区无MBMS用户，可根据本小区对邻小区贡献度判决是否开启本地MBSFN传输。The dynamic judgment algorithm of the present invention judges the MBSFN opening state according to the contribution degree of the own cell to the neighbor cell and the local existence. If there are MBMS users in this cell, you can decide whether to enable local MBSFN transmission or single-cell transmission according to the MBSFN activation status of neighboring cells (the MBSFN activation status of neighboring cells can be obtained through neighbor cell interaction); The contribution degree of the cell to the neighboring cell determines whether to enable the local MBSFN transmission.

本发明中，主要考虑两个影响因素来判决小区的传输状态：In the present invention, two influencing factors are mainly considered to determine the transmission state of the cell:

1)本地存在性因素；1) local presence factors;

2)邻小区贡献度因素。2) Neighboring cell contribution factors.

对于本地存在因素，主要指当前小区内是否存在接收MBMS用户，若不存在，本地小区即为当前MBMS的“空小区”。本地存在性因素是判决的重要前提，当本地存在MBMS用户时，MBMS必须覆盖，覆盖方式为MBSFN或者单小区传输；当本地不存在MBMS用户时，即可以考虑第二个因素一邻小区贡献度因素。当本地小区对邻小区贡献度较大时，可以判断当前小区继续开启MBSFN传输，以保证其他小区MBMS用户的高质量接收；若本小区贡献度较小时，可以考虑关闭MBSFN状态，但由于资源的重新分配会对邻小区产生干扰，因此对于此种场景出于节省功率角度考虑应关闭MBSFN，承载无线资源进入空闲状态；若本小区的贡献度为极小或者零贡献度时，由于此时干扰可以忽略，故可以将原MBSFN的无线资源用于承载其他业务。对于判决过程，第一个因素起决定性作用，当小区内存在MBMS用户时，MBSFN或单小区的传输必须进行。当本地小区内无MBMS接收用户时，可以使用第二个因素，即邻小区贡献度进行状态判决。As for the local existence factor, it mainly refers to whether there is an MBMS receiving user in the current cell, and if not, the local cell is the "empty cell" of the current MBMS. The local existence factor is an important prerequisite for the decision. When there are MBMS users locally, MBMS must be covered, and the coverage method is MBSFN or single-cell transmission; when there are no MBMS users locally, the second factor, the contribution of neighboring cells, can be considered factor. When the contribution of the local cell to neighboring cells is large, it can be judged that the current cell continues to enable MBSFN transmission to ensure high-quality reception of MBMS users in other cells; Re-allocation will cause interference to neighboring cells, so MBSFN should be turned off in order to save power in this scenario, and bearer wireless resources enter an idle state; if the contribution of the cell is minimal or zero, due to the interference It can be ignored, so the radio resources of the original MBSFN can be used to carry other services. For the decision process, the first factor plays a decisive role. When there are MBMS users in the cell, the transmission of MBSFN or single cell must be carried out. When there is no MBMS receiving user in the local cell, the second factor, that is, the contribution degree of the adjacent cell, can be used for state judgment.

本发明设计的动态MBSFN判决方法的主要流程图1所示：Shown in the main flowchart 1 of the dynamic MBSFN decision method of the present invention's design:

步骤101，完成对本地MBMS接收用户的检测。检测方法主要通过E-MBMS的计数过程实现，通过对概率因子的设置及相关检测来估算接收用户数。Instep 101, the detection of local MBMS receiving users is completed. The detection method is mainly realized through the counting process of E-MBMS, and the number of receiving users is estimated by setting the probability factor and related detection.

步骤102，若本地存在MBMS用户，完成对低信噪比MBMS用户的统计。统计方法与步骤101类似的计数方法完成，待计算贡献度时使用。Step 102, if there are MBMS users locally, complete statistics on MBMS users with low SNR. The statistical method is similar to the counting method instep 101, which is used when calculating the contribution degree.

步骤103，邻小区贡献度计算。通过小区间的信息交互，利用邻小区的MBMS总用户数及低信噪比MBMS用户信息完成本小区对邻小区小区贡献度的计算。小区间的信息交互可通过X2接口完成相邻E-Node B间直接交互实现，交互的信息主要包括小区MBSFN开关状态、小区内接收MBMS的总用户数N1以及信噪比低于设定门限的MBMS接收用户数N2；各小区直接向邻小区发送需要交互的信息。E-Node B除了具有原来NodeB的功能之外，还承担了原来RNC的大部分功能，包括有物理层功能、MAC层功能、RRC功能、调度、无线接入许可控制、接入移动性管理以及小区间的无线资源管理功能等。Step 103, calculating the contribution degree of neighboring cells. Through the information exchange among the cells, the calculation of the contribution degree of the cell to the adjacent cell is completed by using the total number of MBMS users of the adjacent cell and the information of MBMS users with low SNR. The information exchange between cells can be realized through the direct interaction between adjacent E-Node Bs through the X2 interface. The exchanged information mainly includes the status of the cell MBSFN switch, the total number of users receiving MBMS N1 in the cell, and the number of users whose signal-to-noise ratio is lower than the set threshold. The number of MBMS receiving users is N2; each cell directly sends information that needs to be exchanged to neighboring cells. In addition to the functions of the original NodeB, the E-Node B also undertakes most of the functions of the original RNC, including physical layer functions, MAC layer functions, RRC functions, scheduling, wireless access admission control, access mobility management and Inter-cell radio resource management functions, etc.

步骤104，MBSFN开关状态判断。首先，根据本地存在性检测结果判断是否开启MBMS，若本小区在存在性检测后有MBMS用户，若邻小区开启MBSFN，则本小区应开启MBSFN；否则，本小区采用单小区模式进行MBMS业务传输。若本小区在存在性检测后无MBMS用户，可以根据本小区对邻小区的贡献度决定是否开启MBSFN。Step 104, MBSFN switch state judgment. First, judge whether to enable MBMS according to the local presence detection results. If there are MBMS users in this cell after the presence detection, and if MBSFN is enabled in neighboring cells, then this cell should enable MBSFN; otherwise, this cell uses single cell mode for MBMS service transmission. . If there is no MBMS user in the cell after the presence detection, it may be determined whether to enable MBSFN according to the contribution of the cell to the neighboring cells.

下面将对本发明中的判决过程详细说明：The judgment process in the present invention will be described in detail below:

(1)本地存在性检测(1) Local presence detection

本地存在性的检测主要通过E-MBMS的计数机制完成。该机制主要完成E-MBMS UE的上行接入过程，同时可以估算出用户数量。具体步骤如图2所示：The detection of local presence is mainly completed through the counting mechanism of E-MBMS. This mechanism mainly completes the uplink access process of E-MBMS UE, and can estimate the number of users at the same time. The specific steps are shown in Figure 2:

步骤201，E-Node B为MBMS设置初始概率因子。Step 201, E-Node B sets an initial probability factor for MBMS.

步骤202，E-Node B决定发起计数过程，并将概率因子发送到UE。In step 202, the E-Node B decides to initiate the counting process and sends the probability factor to the UE.

步骤203，通过概率测试的UE执行计数响应，根据自身对应的下行时隙的位置，发送相应的计数序列。Step 203, the UE that passes the probability test executes a counting response, and sends a corresponding counting sequence according to the position of its corresponding downlink time slot.

步骤204，E-Node B进行计数序列相关检测，统计超过功率门限值的峰值数目，检测概率因子更新需求。Instep 204, the E-Node B performs counting sequence correlation detection, counts the number of peaks exceeding the power threshold, and detects the need to update the probability factor.

步骤205，E-Node B重新计算概率因子。Step 205, the E-Node B recalculates the probability factor.

步骤206，E-Node B将新的概率因子发送到UE。Step 206, E-Node B sends the new probability factor to UE.

步骤207，UE使用更新后的概率因子进行计数响应，通过概率测试的UE执行计数响应，根据自身对应的下行时隙的位置，发送相应的计数序列。Instep 207, the UE uses the updated probability factor to perform a counting response, and the UE that passes the probability test executes the counting response, and sends a corresponding counting sequence according to the position of its corresponding downlink time slot.

步骤208，E-Node B进行计数序列相关检测，统计超过功率门限值的峰值数目，即为响应用户数，根据检测结果计算小区MBMS用户数。Step 208, E-Node B performs counting sequence correlation detection, counts the number of peaks exceeding the power threshold value, which is the number of response users, and calculates the number of MBMS users in the cell according to the detection result.

(2)基于信噪比的用户分布检测(2) User distribution detection based on SNR

低信噪比MBMS用户分布的检测方法与E-MBMS的计数过程基本类似，所不同的是需要响应该过程的用户的接收信号信噪比应低于一定门限。考虑到本发明中当前小区要统计接收MBMS的总用户数以及低于信噪比门限的MBMS接收用户数，因此，这里将本地存在性检测与低信噪比用户检测这两个过程合并给出。如图3所示：The detection method of low SNR MBMS user distribution is basically similar to the counting process of E-MBMS, the difference is that the received signal SNR of the users who need to respond to this process should be lower than a certain threshold. Considering that in the present invention, the current cell needs to count the total number of users receiving MBMS and the number of MBMS receiving users lower than the SNR threshold, therefore, here the two processes of local presence detection and low SNR user detection are combined and given . As shown in Figure 3:

步骤301，E-Node B初始化信噪比门限，以及各过程所对应的概率因子；Step 301, the E-Node B initializes the signal-to-noise ratio threshold and the probability factors corresponding to each process;

步骤302-步骤303，E-Node B发送初始配置信息及存在性检测的计数请求；Step 302-step 303, E-Node B sends the initial configuration information and the counting request of presence detection;

步骤304，用户端完成概率测试；Step 304, the client completes the probability test;

步骤305，通过概率测试的用户端执行计数响应，根据自身对应的下行时隙的位置，发送相应的计数序列，响应网络端存在性检测的计数请求；Step 305, the user terminal that passes the probability test executes a counting response, sends a corresponding counting sequence according to the position of its corresponding downlink time slot, and responds to the counting request of the presence detection of the network side;

步骤306，E-Node B进行相关检测，根据规则估算MBMS接收用户数；Step 306, E-Node B carries out relevant detection, estimates the number of MBMS receiving users according to the rules;

步骤307，E-Node B发送低信噪比的计数请求；Step 307, E-Node B sends the counting request of low signal-to-noise ratio;

步骤308，用户端根据接收信息对信噪比进行判决；Step 308, the user end judges the signal-to-noise ratio according to the received information;

步骤309，低于信噪比门限的用户端完成概率测试；Step 309, the UEs below the SNR threshold complete the probability test;

步骤310，通过概率测试的用户响应网络端低信噪比的计数请求，根据自身对应的下行时隙的位置，发送相应的计数序列；Step 310, the user who passes the probability test responds to the counting request of the network end with a low SNR, and sends a corresponding counting sequence according to the position of its corresponding downlink time slot;

步骤311，E-Node B进行相关检测，估算低信噪比的MBMS接收用户数。Step 311, E-Node B performs correlation detection, and estimates the number of MBMS receiving users with low SNR.

为了在检测过程中对用户数的估算更加准确，可以在此过程中，反复修改门限及概率因子，以达到更为合理的结果。In order to estimate the number of users more accurately during the detection process, the threshold and the probability factor can be modified repeatedly during the detection process to achieve a more reasonable result.

(3)邻小区贡献度计算方法(3) Calculation method of contribution degree of neighboring cells

为了对小区状态进行判决，本发明定义了邻小区贡献度这一参数。由于在本小区内没有MBMS接收用户时需要考虑本小区是否会为MBSFN的邻小区带来性能上的提高，因此贡献度这一参数十分重要。考虑到实现的复杂性，本发明中仅定义了三种贡献度水平来进行判决。根据实际的需要，可灵活设置贡献度的粒度。本发明中的贡献度定义如下：In order to judge the state of the cell, the present invention defines the parameter of the contribution degree of the neighboring cell. Since there is no MBMS receiving user in the cell, it is necessary to consider whether the cell will bring performance improvement to neighboring cells of MBSFN, so the parameter of contribution is very important. Considering the complexity of implementation, only three levels of contribution are defined in the present invention for judgment. According to actual needs, the granularity of contribution can be flexibly set. The contribution degree in the present invention is defined as follows:

高贡献度：此等级表示邻小区有大量接收MBMS用户处于邻小区边界处，邻小区可能处于MBSFN业务热点覆盖区域，因此，本小区对于邻小区来说具有很高的贡献度。High contribution degree: This level indicates that a large number of MBMS receiving users in the neighboring cell are at the border of the neighboring cell, and the neighboring cell may be in the MBSFN service hotspot coverage area. Therefore, this cell has a high contribution to the neighboring cell.

低贡献度：此等级表示邻小区有少量用户需要接收本小区的MBMS数据，在这种场景下，可以关闭MBSFN的传输，但考虑到对邻小区MBMS传输的干扰，只能将MBSFN使用的资源空闲，以达到节约发射功率的目的，不能分配给其他业务使用。Low contribution: This level indicates that there are a small number of users in neighboring cells who need to receive MBMS data in this cell. In this scenario, MBSFN transmission can be turned off, but considering the interference to MBMS transmission in neighboring cells, only resources used by MBSFN can be used. Idle, in order to achieve the purpose of saving transmission power, and cannot be allocated to other services.

零贡献度：此等级表示邻小区没有或几乎没有用户接收当前MBMS数据。这种情况下，可以将MBSFN关闭并将无线资源重新分配给其他业务使用。Zero contribution: This level indicates that there is no or almost no user in the neighboring cell to receive the current MBMS data. In this case, the MBSFN can be closed and the radio resources can be reallocated to other services.

当本小区对邻小区的贡献度是低贡献度或是零贡献度时，本小区的MBSFN传输应该处于关闭状态。When the contribution of the current cell to the neighboring cell is low or zero, the MBSFN transmission of the current cell should be turned off.

本发明给出用户分布与贡献度的对应关系。用户的大体分布可由主流程前两步中的检测过程完成。基于上述两个步骤，可以估算出小区内接收MBMS的总用户数以及信噪比低于设定门限的MBMS接收用户数，分别定义为N1以及N2。同时，定义阈值S为热点小区MBMS接收用户统计值，定义阈值D为不满意MBMS用户数统计下限。这两个阈值门限由实际网络优化人员根据统计分析及经验自行设定。根据邻小区用户分布场景，分别将N1、N2与相应的贡献度对应：The present invention provides the corresponding relationship between user distribution and contribution degree. The general distribution of users can be completed by the detection process in the first two steps of the main process. Based on the above two steps, the total number of MBMS receiving users in the cell and the number of MBMS receiving users whose SNR is lower than the set threshold can be estimated, which are defined as N1 and N2 respectively. At the same time, the threshold S is defined as the statistical value of MBMS receiving users in the hotspot cell, and the threshold D is defined as the statistical lower limit of the number of unsatisfied MBMS users. These two thresholds are set by actual network optimization personnel based on statistical analysis and experience. According to the user distribution scenarios in adjacent cells, N1 and N2 are respectively corresponding to the corresponding contribution degrees:

N1＞S，N2＞D时，邻小区接收MBMS的用户很多，而且分布在边界以及处于阴影中的用户很多，此时本小区对邻小区属于“高贡献度”，MBSFN状态可设置为开启；When N1>S, N2>D, there are many users receiving MBMS in the neighboring cell, and there are many users distributed in the border and in the shadow. At this time, the cell belongs to "high contribution" to the neighboring cell, and the MBSFN status can be set to ON;

N1＞S，N2＜D时，邻小区接收MBMS的用户很多，而且多数集中在信号高覆盖区，即邻小区中心，此时本小区对邻小区属于“低贡献度”，MBSFN状态可设置为关闭，考虑对邻小区干扰，无线资源暂不分配做它用；When N1>S, N2<D, there are many users receiving MBMS in the neighboring cell, and most of them are concentrated in the signal high coverage area, that is, the center of the neighboring cell. At this time, this cell belongs to "low contribution" to the neighboring cell, and the MBSFN status can be set as Closed, considering the interference to neighboring cells, wireless resources are not allocated for other purposes temporarily;

N1＜S，N2＞D时，邻小区接收MBMS的用户较少，且这些用户多分布在小区边界或阴影衰落区，此时本小区对邻小区的贡献度属于“低贡献度”，MBSFN状态可设置为关闭，考虑对邻小区干扰，无线资源暂不分配做它用；When N1<S, N2>D, there are fewer users receiving MBMS in the neighboring cell, and most of these users are distributed in the cell boundary or shadow fading area. At this time, the contribution of this cell to the neighboring cell is "low contribution", and the MBSFN state It can be set to off, considering the interference to neighboring cells, and wireless resources are not allocated for other purposes temporarily;

N1＜S，N2＜D时，邻小区接收MBMS的用户较少，且极少量甚至没有用户分布在小区边界，此时本小区对邻小区的贡献度属于“零贡献度”，MBSFN状态可设置为关闭，同时传输MBSFN的无线资源可以重新分配。When N1<S, N2<D, there are few users receiving MBMS in the neighboring cell, and very few or even no users are distributed on the border of the cell. At this time, the contribution degree of this cell to the neighboring cell belongs to "zero contribution degree", and the MBSFN status can be set For closing, the radio resources for simultaneous transmission of MBSFN can be reallocated.

(4)MBSFN状态判决(4) MBSFN status judgment

根据上述步骤的描述，本发明给出了动态MBSFN的判决方法。具体的判决原则如下：According to the description of the above steps, the present invention provides a dynamic MBSFN judgment method. The specific judgment principles are as follows:

1)如果当前小区存在MBMS接收用户，则根据邻小区的MBSFN状态进行传输方式选择。若邻小区为MBSFN开启状态，则本小区仍然使用MBSFN传输方式进行；若邻小区的MBSFN传输为关闭状态，则本小区采用单小区的传输方式进行MBMS的发送；1) If there is an MBMS receiving user in the current cell, select the transmission mode according to the MBSFN status of the neighboring cell. If the neighboring cell is MBSFN enabled, the cell still uses the MBSFN transmission method; if the MBSFN transmission of the neighboring cell is disabled, the cell uses the single cell transmission method to send MBMS;

2)若本小区不存在接收MBMS的用户，则按照以下原则进行判断：2) If there is no user receiving MBMS in this cell, judge according to the following principles:

a)当前小区对于邻小区的MBSFN传输属于“高贡献度”小区，那么本小区的MBSFN传输应设置为开启状态；a) The current cell belongs to the "high contribution" cell for the MBSFN transmission of neighboring cells, then the MBSFN transmission of this cell should be set to the open state;

b)当前小区对于邻小区的MBSFN传输属于“低贡献度”小区，那么本小区的MBSFN传输应设置为关闭状态，且传输MBSFN的无线资源处于空闲状态，以免重新分配带来干扰；b) The current cell belongs to the "low contribution" cell for the MBSFN transmission of neighboring cells, then the MBSFN transmission of this cell should be set to off, and the wireless resources for transmitting MBSFN should be in an idle state to avoid interference caused by re-allocation;

c)当前小区对于邻小区的MBSFN传输属于“零贡献度”小区，那么本小区的MBSFN传输应设置为关闭状态，且无线资源可以重新分配，提高频谱效率。c) The current cell belongs to the "zero contribution" cell for the MBSFN transmission of neighboring cells, then the MBSFN transmission of this cell should be set to off, and the radio resources can be re-allocated to improve spectrum efficiency.

本发明的详细流程如图4所示：The detailed flow process of the present invention is as shown in Figure 4:

步骤401，E-Node B完成小区参数初始化，包括预测用户数，设定PF值，SNR门限；Step 401, E-Node B completes cell parameter initialization, including predicting the number of users, setting PF value, SNR threshold;

步骤402，各小区检测本地小区MBMS用户，估算用户总数N1；Step 402, each cell detects MBMS users in the local cell, and estimates the total number of users N1;

步骤403，各小区判断是否存在MBMS接收用户，如果是相应小区执行步骤404，否则相应小区执行步骤410；Step 403, each cell judges whether there is an MBMS receiving user, if it is the corresponding cell, execute step 404, otherwise, the corresponding cell executes step 410;

步骤404，与邻小区进行交互，判断邻小区是否开启MBSFN，如果是，执行步骤405，否则执行步骤409；Step 404, interacting with neighboring cells, and judging whether the neighboring cells enable MBSFN, if yes, execute step 405, otherwise execute step 409;

步骤405，MBSFN小区开关置为开；Step 405, the MBSFN cell switch is set to ON;

步骤406，估算N2，低于信噪比门限的MBMS用户数；Step 406, estimating N2, the number of MBMS users lower than the SNR threshold;

步骤407，等待下一次检测周期到来；Step 407, waiting for the arrival of the next detection period;

步骤408，至下一个检测周期，返回步骤402；Step 408, to the next detection cycle, return to step 402;

步骤409，关闭MBSFN传输，开启单小区传输模式，执行步骤407；Step 409, turn off the MBSFN transmission, turn on the single-cell transmission mode, and execute step 407;

步骤410，与邻小区进行进行N1、N2参数交互，N1、N2参数由各小区E-Node B下的MCE(MBMS协调实体)功能实体保存并处理；Step 410, carry out N1, N2 parameter interaction with neighboring cells, N1, N2 parameters are preserved and processed by the MCE (MBMS Coordinating Entity) functional entity under each cell E-Node B;

步骤411，判断是否接收到邻小区参数N1，N2；如果是，执行步骤412，否则执行步骤410；Step 411, judging whether the neighbor cell parameters N1, N2 are received; if yes, execute step 412, otherwise execute step 410;

步骤412，计算本小区对邻小区的贡献度；Step 412, calculating the contribution degree of the own cell to the neighbor cell;

步骤413，判断是否是高贡献度小区，如果是，执行步骤416，如果否，执行步骤414；Step 413, judge whether it is a high contribution cell, if yes, execute step 416, if not, execute step 414;

步骤414，判断是否是低贡献度小区，如果是，执行步骤417，如果否，执行步骤415；Step 414, judging whether it is a low contribution cell, if yes, execute step 417, if not, execute step 415;

步骤415，MBSFN小区开关设置为关闭，重新规划本小区资源，将空闲资源重新分配给其他业务使用，分配方法由E-Node B确定；执行步骤418；Step 415, the MBSFN cell switch is set to off, re-plan the resources of the cell, redistribute idle resources to other services, and the allocation method is determined by the E-Node B; execute step 418;

步骤416，MBSFN小区开关设置为开启，执行步骤418；Step 416, the MBSFN cell switch is set to open, and step 418 is executed;

步骤417，MBSFN小区开关设置为关闭，无线资源处于空闲状态，执行步骤418；Step 417, the MBSFN cell switch is set to off, the wireless resource is in an idle state, and step 418 is executed;

步骤418，等待下一次检测周期到来；Step 418, waiting for the arrival of the next detection cycle;

步骤419，到达下一个检测周期，执行步骤402。Step 419, the next detection cycle is reached, and step 402 is executed.

综合上述步骤，本发明可以实现对动态MBSFN传输状态的判断。Combining the above steps, the present invention can realize the judgment of the dynamic MBSFN transmission status.

MBSFN开关为传输状态，由E-Node B进行设定，E-Node B通过对无线资源的分配管理完成MBSFN开关设定。The MBSFN switch is in the transmission state, which is set by the E-Node B, and the E-Node B completes the MBSFN switch setting through the allocation and management of wireless resources.

本领域的技术人员在不脱离权利要求书确定的本发明的精神和范围的条件下，还可以对以上内容进行各种各样的修改。因此本发明的范围并不仅限于以上的说明，而是由权利要求书的范围来确定的。Various modifications can be made to the above contents by those skilled in the art without departing from the spirit and scope of the present invention defined by the claims. Therefore, the scope of the present invention is not limited to the above description, but is determined by the scope of the claims.