WO2008141580A1

WO2008141580A1 - A method for controlling call access of ip bearer carried and thereof equipment

Info

Publication number: WO2008141580A1
Application number: PCT/CN2008/071008
Authority: WO
Inventors: Yigang Jia
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-05-21
Filing date: 2008-05-19
Publication date: 2008-11-27
Also published as: CN101052014B; CN101052014A

Abstract

A method and equipment for controlling call access of IP bearer, the method comprises steps: when a call requests to access IP bearer, counting the call number accessed by IP bearer; judging whether the accessed call number reaches the predetermined number calls capable of being supported by the IP bearer, if not, allowing the call to access the IP bearer; otherwise, rejecting to access the call. By adopting the present invention, QoS of IP bearer is ensured by realizing the initiative control to the call access.

Description

一种 IP承载呼叫接入控制方法及其装置 IP bearer call access control method and device thereof

本申请要求于 2007 年 5 月 21 日提交中国专利局、申请号为 200710107595.0、发明名称为"一种 IP承载呼叫接入控制方法及其装置"的中国专利申请的优先权，其全部内容通过引用结合在本申请中。 This application claims priority to Chinese Patent Application No. 200710107595.0, entitled "IP Bearer Call Access Control Method and Apparatus", filed on May 21, 2007, the entire disclosure of which is incorporated by reference. Combined in this application.

技术领域 Technical field

本发明涉及无线通信领域，尤其涉及一种 IP承载的呼叫接入控制方法及其装置。 The present invention relates to the field of wireless communications, and in particular, to a call admission control method for an IP bearer and an apparatus therefor.

背景技术 Background technique

在早期计算机网络和分组转发网中，网络只提供尽力而为的业务。对进入网络的业务流，都以先来先服务的方式对业务流分组进行服务。随着 Internet 和各种业务的迅猛发展，尤其是视频、话音等多媒体业务的迅猛增长， IP 网络也由以前单一的数据网变成了多业务的综合数字网。此时，传统的 IP网络没有服务质量保证的弱点已经显现出来。 In early computer networks and packet forwarding networks, the network only provided best-effort services. For service flows entering the network, the service flow packets are served in a first-come, first-served manner. With the rapid development of the Internet and various services, especially the rapid growth of multimedia services such as video and voice, the IP network has also changed from a single data network to a multi-service integrated digital network. At this time, the weakness of the traditional IP network without service quality assurance has already emerged.

目前，基于 NGN ( Next Generation Network , 下一代网络）架构的下一代电信网络建设正方兴未艾， NGN网络的关键一环是需要保证 IP承载网的安全性及 QoS ( Quality of Service, 业务质量）。 IP QoS的概念，就是希望在 IP网络上能对用户业务提供相应的 QoS保证。为了更有效地监视和控制全网的资源，在新一代的模型中，目前提出了带宽代理，也就是网络资源管理器的概念。带宽代理收集网络的拓朴和节点及链路状态信息，管理网络资源，并且结合策略服务器规定的策略进行接纳控制，以保证 IP承载网的 QoS。例如：检测 IP 承载网的 QoS状况，当检测到 IP承载网 QoS状况开始下降，则开始限制接入的呼叫量；若 QoS状况严重下降，则拒绝接入任何呼叫或拆除低优先级的呼叫，以保证已接入呼叫的 QoS; 若 QoS恢复，则正常接入呼叫。 At present, the construction of the next-generation telecommunication network based on the NGN (Next Generation Network) architecture is in the ascendant. The key part of the NGN network is to ensure the security of the IP bearer network and the quality of service (QoS). The concept of IP QoS is to provide corresponding QoS guarantee for user services on the IP network. In order to more effectively monitor and control the resources of the whole network, in the new generation model, the concept of bandwidth proxy, which is the network resource manager, is proposed. The bandwidth agent collects the topology of the network and the node and link state information, manages the network resources, and performs admission control in accordance with the policies specified by the policy server to ensure the QoS of the IP bearer network. For example: detecting the QoS status of the IP bearer network, when detecting that the QoS status of the IP bearer network begins to decline, starting to limit the amount of calls accessed; if the QoS condition is seriously degraded, denying access to any call or dismantling the low priority call, To ensure the QoS of the connected call; if the QoS is restored, the call is normally accessed.

上述技术方案存在以下缺点：接入呼叫量的控制是基于 IP承载网 QoS状况检测的被动控制，即，只有检测到 IP承载网 QoS的状况变坏时，才进行呼叫接入控制，这时已接入呼叫的 QoS已经降低，用户感受已经受到损害。 The above technical solution has the following disadvantages: The control of the access call volume is based on the passive control of the QoS status detection of the IP bearer network, that is, the call access control is performed only when the condition of the QoS of the IP bearer network is detected to be deteriorated. The QoS of the incoming call has been reduced and the user experience has been compromised.

同时，上述技术方案中的接入呼叫量的控制，受制于 QoS状况检测的准确性，若 QoS检测报告存在误差或波动，则可能产生错误的呼叫接入控制策略，从而给运营商带来不必要的损失与用户投诉。发明内容 At the same time, the control of the access call amount in the above technical solution is subject to the accuracy of the QoS condition detection. If there is an error or fluctuation in the QoS detection report, an erroneous call access control policy may be generated, thereby causing the operator not to Necessary losses and user complaints. Summary of the invention

本发明的一个实施例提供了一种 IP承载呼叫接入控制方法，以实现通过对呼叫接入进行主动控制，保证 IP承载的 QoS。该方法包括以下步骤： An embodiment of the present invention provides an IP bearer call access control method to ensure QoS of an IP bearer by actively controlling call access. The method includes the following steps:

当有呼叫请求接入 IP承载时，统计所述 IP承载已接入的呼叫数量；判断所述已接入的呼叫数量是否达到预先设置的所述 IP承载能够支持的呼叫数量，若还未达到，则允许接入所述呼叫；否则，拒绝接入所述呼叫。 When there is a call request to access the IP bearer, the number of calls that the IP bearer has accessed is counted; and it is determined whether the number of the accessed calls reaches the preset number of calls that the IP bearer can support, if not yet reached. , allowing access to the call; otherwise, denying access to the call.

本发明的另一个实施例还提供了一种 IP承载呼叫接入控制装置，该装置包括： Another embodiment of the present invention further provides an IP bearer call access control apparatus, the apparatus comprising:

统计模块，用于当有呼叫请求接入 IP承载时，统计所述 IP承载当前已接入的呼叫数量； a statistics module, configured to count, when a call request is used to access an IP bearer, the number of calls currently received by the IP bearer;

控制模块，用于判断所述统计模块统计出的所述 IP承载已接入的呼叫数量是否达到预先设置的所述 IP承载当前能够支持的呼叫数量，若还未达到，则允许接入所述呼叫；否则，拒绝接入所述呼叫。 a control module, configured to determine whether the number of calls that the IP bearer has accessed by the statistics module reaches a preset number of calls that the IP bearer can currently support, and if not, access the Call; otherwise, access to the call is denied.

本发明的上述实施例，通过计算 IP承载当前所能支持的呼叫量和已接入的呼叫量，判断所述 IP承载当前是否还能支持新的呼叫接入，达到对呼叫接入进行主动控制，从而保证了已接入呼叫的 QoS。 The foregoing embodiment of the present invention determines whether the IP bearer can support new call access currently by calculating the call volume currently supported by the IP bearer and the amount of the accessed call, thereby achieving active control of call access. , thus ensuring the QoS of the connected call.

附图说明 DRAWINGS

图 1为本发明实施例一的 IP承载的呼叫接入控制流程示意图； 1 is a schematic flowchart of call access control of an IP bearer according to Embodiment 1 of the present invention;

图 2为本发明实施例一所采用的组网结构； 2 is a networking structure used in Embodiment 1 of the present invention;

图 3为本发明实施例一的虚拟电路状态维护流程示意图； 3 is a schematic diagram of a state maintenance process of a virtual circuit according to Embodiment 1 of the present invention;

图 4为本发明实施例二的 IP承载呼叫接入控制装置结构示意图；图 5为本发明实施例三的 IP承载呼叫接入控制装置结构示意图。 4 is a schematic structural diagram of an IP bearer call access control apparatus according to Embodiment 2 of the present invention; and FIG. 5 is a schematic structural diagram of an IP bearer call access control apparatus according to Embodiment 3 of the present invention.

具体实施方式 detailed description

下面结合附图对本发明的实施例进行伴细描述。 The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

本发明的第一个实施例提出一种基于虚拟电路概念的 IP承载网 QoS主动控制方案，使 IP承载网接入呼叫的数量受虚拟电路数量的限制，从而保证接入呼叫的 QoS。 The first embodiment of the present invention proposes an QoS active control scheme for an IP bearer network based on the virtual circuit concept, so that the number of access calls of the IP bearer network is limited by the number of virtual circuits, thereby ensuring the QoS of the incoming call.

参见图 1 , 为本发明实施例一的 IP承载的呼叫接入控制流程示意图，具体步骤包括：步骤 101、获取各 IP承载段的 IP带宽分配情况，统计话务模型。获取 IP承载网为某局向、某网关或某连接网元分配的 IP带宽情况。例如，获取 MGW ( Media Gate Way, 媒体网关）与 BSC ( Base Station Controller, 基站控制器）间的 IP承载段、各 MGW间的 IP承载段，或者 MGW与 RNC( Radio Network Controller, 无线网络控制器）间的 IP承载段的 IP带宽分配情况。 FIG. 1 is a schematic flowchart of a call access control process of an IP bearer according to Embodiment 1 of the present invention, where specific steps include: Step 101: Obtain an IP bandwidth allocation of each IP bearer segment, and collect a traffic model. Obtain the IP bandwidth allocated by the IP bearer network to an office route, a gateway, or a connected network element. For example, the IP bearer segment between the MGW (Media Gate Way) and the BSC (Base Station Controller), the IP bearer segment between the MGWs, or the MGW and the RNC (Radio Network Controller) IP bandwidth allocation between IP bearers.

针对每种话务模型中各 IP承载段所传输的承载数据类型，计算在该种话务模型中各 IP承载段理论上占用的带宽。例如，对于话务模型为语音呼叫（使用增强型可变速率编码器 EVRC压缩语音编解码）， BSC - MGW段的单个呼叫占用 8K带宽。 The theoretically occupied bandwidth of each IP bearer segment in the traffic model is calculated for the type of bearer data transmitted by each IP bearer segment in each traffic model. For example, for a traffic model that is a voice call (using an enhanced variable rate coder EVRC compressed voice codec), a single call of the BSC-MGW segment occupies 8K of bandwidth.

步骤 102、根据各 IP承载段的 IP带宽和话务模型，计算 IP承载网在不同话务模型下支持的各种呼叫最大数量（即虚拟电路数量）。 Step 102: Calculate, according to the IP bandwidth and the traffic model of each IP bearer segment, the maximum number of calls (ie, the number of virtual circuits) supported by the IP bearer network under different traffic models.

本实施例以图 2所示的组网结构举例说明计算 IP承载网在不同话务模型下支持的虚拟电路数量。 This embodiment uses the networking structure shown in FIG. 2 to illustrate the calculation of the number of virtual circuits supported by the IP bearer network under different traffic models.

在如图 2所示的组网结构中，包括移动软交换中心 MSCe A和 MSCe B, 以及 MSCe A侧的基站控制器 BSC、媒体网关 MGW1和媒体网关 MGW2 , MSCe B侧的无线网络控制器 RNC、媒体网关 MGW3和媒体网关 MGW4。 MSCe 与 MGW之间通过 H.248媒体网关控制协议进行通信， MSCe之间通过 SIP ( Session Initiation Protocol, 舌初始协议 )进行通信， MSCe 与 BSC 之间通过 Alp接口连接 , MSCe 与 RNC之间通过 Iu接口连接 , BSC与 MGW 之间通过 A2p接口连接。图中的虚线表示信令流，粗实线表示 IP承载流。 IP 承载段包括： In the networking structure shown in FIG. 2, the mobile softswitch centers MSCe A and MSCe B, and the base station controller BSC, the media gateway MGW1 and the media gateway MGW2 on the MSCe A side, and the radio network controller RNC on the MSCe B side are included. , Media Gateway MGW3 and Media Gateway MGW4. The MSCe communicates with the MGW through the H.248 media gateway control protocol. The MSCe communicates with the SIP (Session Initiation Protocol). The MSCe and the BSC are connected through the Alp interface, and the MSCe and the RNC pass the Iu. The interface is connected. The BSC and the MGW are connected through the A2p interface. The dotted line in the figure indicates the signaling flow, and the thick solid line indicates the IP bearer flow. The IP bearer segment includes:

MGW1 - BSC段，分配带宽 1M;话务模型：全部是语音呼叫（使用 EVRC 压缩语音编解码）；单个呼叫占用带宽 8K, 则该段承载在满负荷情况下，理论上允许接入 128个呼叫（ 1M/8K = 128 ); MGW1 - BSC segment, allocated bandwidth 1M; traffic model: all voice calls (using EVRC compressed voice codec); single call occupies 8K bandwidth, then the segment bears at full load, theoretically allows access to 128 calls (1M/8K = 128);

MGW4 - RNC段，分配带宽 2M; 话务模型： 50 %语音呼叫， 50 %视频呼叫；假设单个语音呼叫占用带宽 10K, 单个视频呼叫占用带宽 50K, 则该段承载在满负荷情况下 , 理论上允许接入 34个语音呼叫和 34个视频呼叫。 MGW4 - RNC segment, allocated bandwidth 2M; traffic model: 50% voice call, 50% video call; assuming a single voice call occupies 10K bandwidth, a single video call occupies 50K bandwidth, then the segment is carried at full load, in theory Allows access to 34 voice calls and 34 video calls.

其他各 IP承载段如图所示，也可以类似计算出允许接入的呼叫量（即虚拟电路数量）。在计算各 IP承载段的虚拟电路数量时，需要考虑各种情况的影响，如数据包长对占用带宽的影响，网络维护消息也会占用部分带宽。因此， IP承载段的容量一般不可能平衡在理论值，需要留有一定余量。可以通过设置一个阔值，例如， IP带宽为 100M, 估计负荷为 70 %时是一个平衡值，因此，按照 70M计算最大虚拟电路数。同时，话务模型也不是一个单线条，各种业务必然有波动，因此，在多业务接入情况下，需要适当扩大各单业务的虚拟电路数量。例如，当前可以接入 50个语音呼叫， 50个视频呼叫；但是在某一时刻，已接入 50个语音呼叫，而只接入了 10个视频呼叫，那么 IP承载网其实还有能力继续承载呼叫。为了充分利用带宽，可适当调整语音或视频呼叫数量，例如在上述情况下，增加语音呼叫数量为可以接入 60个呼叫。 The other IP bearer segments are similarly calculated as the number of calls allowed to be accessed (ie, the number of virtual circuits). When calculating the number of virtual circuits in each IP bearer segment, you need to consider the impact of various situations, such as the impact of packet length on occupied bandwidth. Network maintenance messages also occupy part of the bandwidth. Therefore, the capacity of the IP bearer segment is generally impossible to balance at the theoretical value, and a certain margin is required. You can set a threshold, for example, the IP bandwidth is 100M, and the estimated load is 70%, which is an equilibrium value. Therefore, the maximum number of virtual circuits is calculated according to 70M. At the same time, the traffic model is not a single line, and various services must fluctuate. Therefore, in the case of multi-service access, it is necessary to appropriately expand the number of virtual circuits of each single service. For example, currently 50 voice calls and 50 video calls can be accessed; but at a certain moment, 50 voice calls have been accessed, and only 10 video calls have been accessed, then the IP bearer network actually has the ability to continue to bear. call. In order to make full use of the bandwidth, the number of voice or video calls can be appropriately adjusted. For example, in the above case, the number of voice calls is increased to access 60 calls.

在配置各 IP承载段的虚拟电路数量时，需要考虑配置的易操作性。如 MGW1 - MGW2段，可以使用 MGW对来标识一段 IP承载；而 MGW1 - BSC 段，则使用局向网关对来标识。同时记录每个 IP承载段的最大虚拟电路数量。 When configuring the number of virtual circuits in each IP bearer segment, you need to consider the ease of configuration. For example, in the MGW1 - MGW2 segment, the MGW pair can be used to identify a segment of the IP bearer; and the MGW1 - BSC segment is identified by the office gateway pair. Also record the maximum number of virtual circuits per IP bearer segment.

呼叫接入受虚拟电路数量的控制，因此，需要实时维护虚拟电路状态，实时统计已占用虚拟电路或可用的虚拟电路数量。以下步骤 103 - 106描述通过虚拟电路对呼叫接入的控制过程以及虚拟电路的维护过程。 Call access is controlled by the number of virtual circuits, so real-time maintenance of virtual circuit states is required, and real-time statistics have taken up virtual circuits or the number of available virtual circuits. The following steps 103 - 106 describe the control process of call access through the virtual circuit and the maintenance process of the virtual circuit.

步骤 103、网络侧收到呼叫请求后，判断当前是否还有可用的虚拟电路，若有，则执行步骤 104，否则执行步骤 106。 Step 103: After receiving the call request, the network side determines whether there is still a virtual circuit available. If yes, step 104 is performed; otherwise, step 106 is performed.

MSCe在收到呼叫接入请求时，要为呼叫选择网关。在选择网关时，需要考虑网关的负荷情况。优选负荷小的网关，负荷情况可以才艮据该网关到某局向、某实体的虚拟电路占用情况决定。若网关负荷已满，则该次呼叫被拒绝。 When the MSCe receives the call access request, it chooses a gateway for the call. When selecting a gateway, you need to consider the load of the gateway. Preferably, the load is small, and the load situation can be determined according to the occupancy of the virtual circuit of the gateway to an office or an entity. If the gateway load is full, the call is rejected.

以组网图 2为例：呼叫从 BSC上来 , 从 MGW1接入 MSCeA, 假设 BSC - MGW1段 IP承载配置的虚拟电路数为 1000，若目前被占用的虚拟电路数不足 1000，即还有可用的虚拟电路，则呼叫被允许接入；若被占用的虚拟电路数已达到 1000, 无虚拟电路可用，则呼叫被拒绝。 Take network diagram 2 as an example: The call comes from the BSC and accesses the MSCeA from the MGW1. Assume that the number of virtual circuits in the BSC-MGW1 IP bearer configuration is 1000. If the number of virtual circuits currently occupied is less than 1000, there is still available. In the virtual circuit, the call is allowed to access; if the number of occupied virtual circuits has reached 1000, no virtual circuit is available, then the call is rejected.

步骤 104、当前还有可用的虚拟电路时，接入呼叫，并更新可用的虚拟电路数量。 Step 104: When there is currently a virtual circuit available, the call is accessed and the number of available virtual circuits is updated.

本实施例的***中为各 IP承载段设置计数器，统计当前可用的虚拟电路数量，初始值为最大虚拟电路数量，该最大虚拟电路数量可按照步骤 102的方式计算。每次接入一个呼叫时，将该计数器减 1。当计数器数值为零时，表示当前已达到最大虚拟电路数量，即当前没有可用的虚拟电路。 In the system of this embodiment, a counter is set for each IP bearer segment, and the number of currently available virtual circuits is counted, and the initial value is the maximum number of virtual circuits, and the maximum number of virtual circuits can be in accordance with the method of step 102. Calculation. Decrease the counter by one each time a call is placed. When the counter value is zero, it indicates that the maximum number of virtual circuits has been reached, that is, there is currently no virtual circuit available.

步骤 105、当呼叫结束后释放呼叫，并更新可用的虚拟电路数量。 Step 105: Release the call when the call ends, and update the number of available virtual circuits.

每次释放一个呼叫，将计数器数值加 1。 Each time a call is released, the counter value is incremented by one.

步骤 106、拒绝接入呼叫。 Step 106: Deny access to the call.

每次接入呼叫前，判断计数器计数值，若为零，则当前没有可用的虚拟电路时，拒绝接入呼叫。 Before each call is received, the counter count value is judged. If it is zero, when there is no available virtual circuit, the access call is denied.

上述实施例采用计数器来统计当前可用的虚拟电路数，还可采用计数器来统计当前已占用的虚拟电路数。在这种情况下，计数器初始值为零，每接入一个呼叫，计数器加 1; 每释放一个呼叫，计数器减 1。在接入呼叫前，判断该计数器计数值是否达到最大虚拟电路数，若未达到，则接入呼叫；否则拒绝接入。 The above embodiment uses a counter to count the number of currently available virtual circuits, and a counter can also be used to count the number of virtual circuits currently occupied. In this case, the initial value of the counter is zero, and the counter is incremented by one each time a call is placed; the counter is decremented by one each time a call is released. Before the call is accessed, it is judged whether the counter count value reaches the maximum number of virtual circuits, and if not, the call is accessed; otherwise, the access is rejected.

上述实施例中在呼叫的各个环节都需要考虑网关的负荷，从而选择正确的网关或路由。 In the above embodiments, the load of the gateway needs to be considered in all aspects of the call, so that the correct gateway or route is selected.

在配置 IP承载网的虚拟电路数量时，可以根据组网结构和话务模型进行配置，并可以根据***运行情况实时调整虚拟电路数量，以实现对呼叫接入的控制，保证呼叫接入的 QoS。也就是说， IP承载网的虚拟电路数量可以根据实际情况动态配置和调整，例如，如果话务模型改变，则需要基于新的话务模型配置 IP承载网的虚拟电路数量；还例如，如前所述，如果某 IP承载段接入的语音呼叫量已达到配置的相应虚拟电路数量，而接入的视频呼叫量远低于配置的相应虚拟电路数量，则可以将语音呼叫的虚拟电路数量适当提高，以便在尽可能不影响接入呼叫的 QoS情况下，接入更多的呼叫，提高网络资源利用率。 When configuring the number of virtual circuits in the IP bearer network, you can configure according to the networking structure and traffic model, and adjust the number of virtual circuits in real time according to the system operation to control call access and ensure QoS of call access. . That is to say, the number of virtual circuits of the IP bearer network can be dynamically configured and adjusted according to actual conditions. For example, if the traffic model changes, the number of virtual circuits of the IP bearer network needs to be configured based on the new traffic model; for example, as before If the number of voice calls accessed by an IP bearer segment has reached the configured number of corresponding virtual circuits, and the amount of video calls accessed is much lower than the configured number of corresponding virtual circuits, the number of virtual circuits for voice calls can be appropriate. Raise, in order to increase access to more calls and improve network resource utilization without affecting the QoS of incoming calls.

对于图 1中的步骤 103-105，可以以图 3所示的呼叫处理流程为例，对虚拟电路状态的维护过程进行描述。 For the steps 103-105 in Figure 1, the maintenance process of the virtual circuit state can be described by taking the call processing flow shown in Figure 3 as an example.

参见图 3 , 为本发明实施例一的虚拟电路状态维护流程示意图，具体步骤包括： 3 is a schematic diagram of a state maintenance process of a virtual circuit according to Embodiment 1 of the present invention, and specific steps include:

P1 : 呼叫接入请求。该请求可以从它局/ BSC/RNC等上来，也可以是出局或到 BSC/RNC的落地请求。呼叫需要建立 IP承载（本发明只涉及 IP承载相关的呼叫），并向 MGW申请建立 IP承载。图中的步骤 ADD和 ADD REPLY 为 IP承载建立的过程。 P1: Call access request. The request may be from the office/BSC/RNC, etc., or it may be an outgoing request or a landing request to the BSC/RNC. The call needs to establish an IP bearer (the invention only relates to the IP bearer phase) Off call), and apply to the MGW to establish an IP bearer. Steps ADD and ADD REPLY in the figure are the procedures established for the IP bearer.

P2: MSCe收到 MGW返回的成功响应后，记录一条虚拟电路被占用；该虚拟电路归属于某 IP承载段，归属的 IP承载段可以为 MGW对，也可以为 IP 局向网关对，视用户配置情况而定。虚拟电路归属于的 IP承载段可以从呼叫属性中得来。以图 2所示的组网图为例，呼叫从 BSC上来，从 MGW1接入 MSCe, 则根据此信息可以标志唯一的 IP承载段。其他情况依此类推。 P2: After receiving the successful response returned by the MGW, the MSCe records that a virtual circuit is occupied; the virtual circuit belongs to an IP bearer segment, and the home IP bearer segment may be an MGW pair or an IP office gateway pair, depending on the user. Depending on the configuration. The IP bearer segment to which the virtual circuit belongs can be derived from the call profile. Taking the networking diagram shown in Figure 2 as an example, the call comes from the BSC and accesses the MSCe from the MGW1. Based on this information, the unique IP bearer segment can be marked. Other circumstances and so on.

P3: 呼叫释放请求。图中的步骤 SUB和 SUB REPLY为 IP承载释放的过程。 P3: Call release request. The steps SUB and SUB REPLY in the figure are the procedures for releasing the IP bearer.

P4: MSCe在释放此次呼叫时，同时释放该呼叫占用的虚拟电路。 P4: When the MSCe releases the call, it simultaneously releases the virtual circuit occupied by the call.

本发明的第二个实施例提供了一种 IP承载呼叫接入控制装置。 A second embodiment of the present invention provides an IP bearer call access control apparatus.

参见图 4, 为本发明实施例二的 IP承载呼叫接入控制装置结构示意图。该装置包括计算模块、统计模块和控制模块。 FIG. 4 is a schematic structural diagram of an IP bearer call access control apparatus according to Embodiment 2 of the present invention. The device includes a calculation module, a statistics module, and a control module.

计算模块用于根据 IP承载的带宽分配和话务模型，计算该 IP承载当前能够支持的呼叫数量。计算模块包括获取子模块、计算子模块和调整子模块，其中，获取子模块用于获取该 IP承载当前的带宽分配情况和话务模型；计算子模块用于根据获取子模块获取到的 IP承载的带宽分配情况和话务模型，计算该 IP承载能够支持的呼叫数量；调整子模块用于将该计算子模块计算出的 IP 承载能够支持的呼叫数量乘以小于 1的系数。 The calculation module is configured to calculate the number of calls that the IP bearer can currently support according to the bandwidth allocation and traffic model of the IP bearer. The calculation module includes an acquisition sub-module, a calculation sub-module, and an adjustment sub-module, where the acquisition sub-module is configured to obtain a current bandwidth allocation situation and a traffic model of the IP bearer, and the calculation sub-module is configured to acquire an IP bearer according to the acquisition sub-module. The bandwidth allocation situation and the traffic model, calculate the number of calls that the IP bearer can support; the adjustment sub-module is used to multiply the number of calls that the IP bearer calculated by the calculation sub-module can support by a coefficient less than one.

统计模块为第一计数器，用于统计 IP承载当前还可接入的新的呼叫数量。第一计数器的初值设置为计算模块计算出的该 IP承载当前能够支持的呼叫数量，并且每接入一个呼叫，将第一计数器数值减 1; 每释放一个呼叫，将第一计数器数值加 1。 The statistics module is a first counter, which is used to count the number of new calls that the IP bearer can currently access. The initial value of the first counter is set to the number of calls currently calculated by the computing module for the IP bearer, and the first counter value is decremented by one for each call; the first counter value is incremented by one for each call released. .

当有呼叫请求接入该 IP承载时，控制模块判断第一计数器的计数值是否大于等于 1，若是，则表明该 IP承载当前已接入的呼叫数量还未达到该 IP承载当前能够支持的呼叫数量，因而允许接入该呼叫；若控制模块判断第一计数器的计数值为零时，则表明该 IP承载当前已接入的呼叫数量已经达到该 IP承载当前能够支持的呼叫数量，因而拒绝接入该呼叫。 When there is a call request to access the IP bearer, the control module determines whether the count value of the first counter is greater than or equal to 1, and if so, it indicates that the number of calls currently accessed by the IP bearer has not reached the call that the IP bearer can currently support. The number, thus allowing access to the call; if the control module determines that the count value of the first counter is zero, it indicates that the number of calls currently accessed by the IP bearer has reached the number of calls that the IP bearer can currently support, and thus rejects the call. Enter the call.

本发明的第三个实施例还提供了一种 IP承载呼叫接入控制装置。参见图 5, 为本发明实施例三的 IP承载呼叫接入控制装置结构示意图。该装置包括计算模块、统计模块和控制模块。 A third embodiment of the present invention also provides an IP bearer call access control apparatus. FIG. 5 is a schematic structural diagram of an IP bearer call access control apparatus according to Embodiment 3 of the present invention. The device includes a calculation module, a statistics module, and a control module.

其中，计算模块与图 4所示的计算模块相同。 The calculation module is the same as the calculation module shown in FIG.

统计模块为第二计数器，用于统计该 IP承载当前已接入的呼叫数量；第二计数器的初始值设置为 0, 并且每接入一个呼叫，将第二计数器数值加 1; 每释放一个呼叫，将第二计数器数值减 1。 The statistics module is a second counter, configured to count the number of calls currently accessed by the IP bearer; the initial value of the second counter is set to 0, and the second counter value is incremented by 1 for each call; each call is released. , decrement the second counter value by 1.

当有呼叫请求接入该 IP承载时，控制模块判断第二计数器的计数值是否等于计算模块计算出的该 IP承载当前能够支持的呼叫数量，若第二计数器计数值小于计算模块计算出的数值，则表明该 IP承载当前已经接入的呼叫数量还未达到其能够支持的呼叫数量，因而允许接入该呼叫；若第二计数器计数值等于计算模块计算出的数值，则表明该 IP承载当前已经接入的呼叫数量达到其能够支持的呼叫数量，而因拒绝接入该呼叫。 When there is a call request to access the IP bearer, the control module determines whether the count value of the second counter is equal to the number of calls that the IP bearer can support currently supported by the calculation module, if the second counter count value is less than the value calculated by the calculation module. , indicating that the number of calls that the IP bearer has accessed has not reached the number of calls that it can support, and thus allows access to the call; if the second counter count value is equal to the value calculated by the calculation module, it indicates that the IP bearer is currently The number of calls that have been reached has reached the number of calls they can support, and the call is denied access.

综上所述，本发明的上述实施例根据获取到的各 IP承载段的 IP带宽分配情况和话务模型 ,计算基于话务模型下的各 IP承载段所能支持的最大呼叫量，并在接入 /释放呼叫时统计当前已接入的呼叫量；在接入呼叫之前，根据 IP承载段能支持的最大呼叫量和当前该 IP承载段已接入的呼叫量，判断还可接入的呼叫量，然后根据判断结果控制呼叫接入，从而保证了已接入呼叫的 QoS 不受影响。另外，本发明实施例在计算 IP承载段支持的最大呼叫量时，还可根据***允许情况和话务模型对计算出的最大呼叫量进行实时调整，进一步保证了已接入呼叫的 QoS。明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。 In summary, the foregoing embodiment of the present invention calculates the maximum call volume that can be supported by each IP bearer segment based on the traffic model according to the obtained IP bandwidth allocation situation and the traffic model of each IP bearer segment, and The amount of the currently accessed call is counted when the call is received or released. Before the call is received, the maximum number of calls that can be supported by the IP bearer segment and the number of calls that have been accessed by the current IP bearer segment are determined. The call volume, and then control the call access according to the judgment result, thereby ensuring that the QoS of the accessed call is not affected. In addition, when calculating the maximum call volume supported by the IP bearer segment, the embodiment of the present invention can perform real-time adjustment on the calculated maximum call volume according to the system permission condition and the traffic model, thereby further ensuring the QoS of the accessed call. The spirit and scope of the Ming. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

权利要求 Rights request

1、一种 IP承载呼叫接入控制方法，其特征在于，包括以下步骤：当有呼叫请求接入 IP承载时，统计所述 IP承载已接入的呼叫数量；判断所述已接入的呼叫数量是否达到预先设置的所述 IP承载能够支持的呼叫数量，若还未达到，则允许接入所述呼叫；否则，拒绝接入所述呼叫。 An IP bearer call access control method, comprising the steps of: counting a number of calls that have been accessed by the IP bearer when a call request is accessed by an IP bearer; determining the called call Whether the number reaches the preset number of calls that the IP bearer can support, and if not, allows access to the call; otherwise, the access is denied.

2、如权利要求 1所述的方法，其特征在于，所述呼叫请求接入 IP承载之前还包括： 2. The method according to claim 1, wherein the requesting the access to the IP bearer further comprises:

预先根据所述 IP承载的带宽分配和话务模型确定所述 IP承载能够支持的呼叫数量。 The number of calls that the IP bearer can support is determined in advance according to the bandwidth allocation and traffic model of the IP bearer.

3、根据权利要求 2所述的方法，其特征在于，所述预先根据所述 IP承载的带宽分配和话务模型确定所述 IP承载能够支持的呼叫数量具体为： The method according to claim 2, wherein the determining, according to the bandwidth allocation and the traffic model of the IP bearer, the number of calls that the IP bearer can support is:

获取所述 IP承载当前的带宽分配情况和话务模型； Obtaining a current bandwidth allocation situation and a traffic model of the IP bearer;

根据为每种话务模型分配的当前带宽，及每种话务模型中单个呼叫占用的带宽，计算得到所述 IP承载支持的呼叫数量的计算值。 The calculated value of the number of calls supported by the IP bearer is calculated based on the current bandwidth allocated for each traffic model and the bandwidth occupied by a single call in each traffic model.

4、如权利要求 3所述的方法，其特征在于，所述计算得到所述 IP承载支持的呼叫数量的计算值后，还包括步骤：根据所述带宽的利用情况对所述计算值进行调整，得到所述 IP承载能够支持的呼叫数量。 The method according to claim 3, wherein after the calculating the calculated value of the number of calls supported by the IP bearer, the method further includes the step of: adjusting the calculated value according to the utilization of the bandwidth , obtaining the number of calls that the IP bearer can support.

5、如权利要求 4所述的方法，其特征在于，对所述计算值进行调整具体为：将所述计算值乘以小于 1的系数，所述小于 1的系数为根据所述带宽的利用情况确定的系数。 The method according to claim 4, wherein the adjusting the calculated value is specifically: multiplying the calculated value by a coefficient less than 1, and the coefficient less than 1 is based on the utilization of the bandwidth The coefficient determined by the situation.

6、如权利要求 2所述的方法，其特征在于，所述 IP承载的带宽分配包括： IP承载网为局向分配的带宽、 IP承载网为网关分配的带宽或 IP承载网为连接网元分配的带宽中的至少一个。 The method of claim 2, wherein the bandwidth allocation of the IP bearer comprises: an IP bearer network is an office-assigned bandwidth, an IP bearer network allocates a bandwidth for a gateway, or an IP bearer network is a connected network element. At least one of the allocated bandwidth.

7、如权利要求 1所述的方法，其特征在于，所述 IP承载支持多业务接入，还包括：当其中的部分业务类型已接入的呼叫数量达到所述 IP承载当前能够支持的该业务类型的呼叫数量，而另一部分业务类型已接入的呼叫数量还未达到所述 IP承载能够支持的该业务类型的呼叫数量时，将前者业务类型对应的所述 IP承载当前能够支持的呼叫数量增加指定值，得到所述 IP承载当前能够支持的该业务类型的呼叫数量。 The method of claim 1, wherein the IP bearer supports multi-service access, and further includes: when the number of calls that have been accessed by some of the service types reaches the current support of the IP bearer The number of calls of the service type, and the number of calls that have been accessed by another part of the service type has not reached the number of calls of the service type that the IP bearer can support, and the IP bearer corresponding to the former service type can currently support the call. The number is increased by a specified value to obtain the number of calls of the service type that the IP bearer can currently support.

8、如权利要求 1-7任一权项所述的方法，其特征在于，在接入所述呼叫时，选择负荷小的网关进行呼叫接入； The method according to any one of claims 1 to 7, wherein, when accessing the call, selecting a gateway with a small load to perform call access;

所述负荷小的网关为该网关到局向或到连接网元的 IP承载当前可接入的呼叫数量大的网关。 The gateway with a small load is a gateway with a large number of calls currently accessible to the gateway to the office or to the IP bearer connected to the network element.

9、一种 IP承载呼叫接入控制装置，其特征在于，包括： An IP bearer call access control device, comprising:

10、根据权利要求 9所述的装置，其特征在于，还包括： 10. The device according to claim 9, further comprising:

计算模块，用于预先根据 IP承载的带宽分配和话务模型，计算所述 IP承载当前能够支持的呼叫数量。 And a calculation module, configured to calculate, according to a bandwidth allocation and a traffic model of the IP bearer, a number of calls that the IP bearer can currently support.

11、如权利要求 10所述的装置，其特征在于，所述统计模块为第一计数器，所述第一计数器的初值为所述计算模块计算出的所述 IP承载当前能够支持的呼叫数量，用于每接入一个呼叫，将所述第一计数器的数值减 1 , 每释放一个呼叫，将所述第一计数器的数值加 1; The device of claim 10, wherein the statistics module is a first counter, and the initial value of the first counter is the number of calls that the IP bearer can support currently supported by the computing module. For each call, the value of the first counter is decremented by one, and the value of the first counter is incremented by one each time a call is released;

所述控制模块具体用于，在所述第一计数器的数值大于或等于 1时，允许接入所述呼叫；在所述计数器的数值为零时，拒绝接入所述呼叫。 The control module is specifically configured to allow access to the call when the value of the first counter is greater than or equal to 1, and to deny access to the call when the value of the counter is zero.

12、根据权利要求 10所述的装置，其特征在于，所述统计模块为第二计数器，所述第二计数器的初值为 0, 用于每接入一个呼叫，将所述第二计数器的数值 1 , 每释放一个呼叫，将所述第二计数器的数值减 1; The device according to claim 10, wherein the statistical module is a second counter, and the initial value of the second counter is 0, for each call, the second counter is a value of 1, each time a call is released, the value of the second counter is decremented by one;

所述控制模块具体用于，在所述第二计数器数值小于所述呼叫数量时，允许接入所述呼叫；在所述计数器数值等于所述呼叫数量时，拒绝接入所述呼叫，所述呼叫数量为所述计算模块计算出的所述 IP承载当前能够支持的呼叫数量。 The control module is specifically configured to: when the second counter value is less than the number of calls, allow access to the call; when the counter value is equal to the number of calls, deny access to the call, The number of calls is the number of calls that the IP bearer currently supports can be supported by the computing module.

13、如权利要求 10-12任一权项所述的装置，其特征在于，所述计算模块包括： The device of any one of claims 10 to 12, wherein the calculation module comprises:

获取子模块 , 用于获取所述 IP承载当前的带宽分配情况和话务模型；计算子模块，用于根据所述获取子模块获取到的所述 IP承载当前的带宽情况和话务模型 , 计算所述 IP承载能够支持的呼叫数量。 Obtaining a submodule, configured to acquire a current bandwidth allocation situation and a traffic model of the IP bearer; And a calculation submodule, configured to calculate, according to the current bandwidth situation and the traffic model of the IP bearer acquired by the obtaining submodule, the number of calls that the IP bearer can support.

14、如权利要求 13所述的装置，其特征在于，所述计算模块还包括调整子模块，用于根据带宽的利用情况对所述计算值进行调整，得到所述 IP承载能够支持的呼叫数量，所述调整具体为将所述计算值乘以小于 1的系数，所述小于 1的系数为根据所述带宽的利用情况确定的系数。 The device of claim 13, wherein the calculation module further comprises an adjustment submodule, configured to adjust the calculated value according to the utilization of the bandwidth, to obtain the number of calls that the IP bearer can support. The adjusting is specifically multiplying the calculated value by a coefficient smaller than 1, and the coefficient smaller than 1 is a coefficient determined according to the utilization of the bandwidth.