CN105100524A - Packet-based acoustic echo cancellation method and device - Google Patents

Packet-based acoustic echo cancellation method and device Download PDF

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CN105100524A
CN105100524A CN 201410208746 CN201410208746A CN105100524A CN 105100524 A CN105100524 A CN 105100524A CN 201410208746 CN201410208746 CN 201410208746 CN 201410208746 A CN201410208746 A CN 201410208746A CN 105100524 A CN105100524 A CN 105100524A
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echo cancellation
media gateway
paec
packet
echo
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CN 201410208746
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Chinese (zh)
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李舟洲
蔡亦钢
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阿尔卡特朗讯
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Abstract

The invention aims to provide a packet-based acoustic echo cancellation (PAEC) method and device. The method comprises: a media gateway controller (MGC) controlling a media gateway (MG) to perform PAEC, wherein the MGC determines the echo cancellation indication message of a corresponding MG so as to indicate a termination performing PAEC in the corresponding MG and an employed echo cancellation direction, and sends the echo cancellation indication message to the corresponding MG; and then the indicated termination in the corresponding MG performing PAEC according to the indicated echo cancellation direction. The invention provides a clear, flexible, standard and expandable scheme for the MGC to control the PAEC of the MC.

Description

-种基于分组的声学回声消除方法与装置 - based on the kind of acoustic echo method and apparatus for eliminating packet

技术领域 FIELD

[0001] 本发明涉及通信技术领域,尤其涉及一种基于分组的声学回声消除技术。 [0001] The present invention relates to communication technologies, particularly to a packet-based acoustic echo cancellation techniques.

背景技术 Background technique

[0002] 设计糟糕的用户设备使来自本端听筒的声音被提供给本端话筒,从而使得该声音被传送至远端,使远端的用户听到自己的(声学)回声。 [0002] Poorly designed so that the sound from the user of the present terminal equipment is provided to the handset microphone end of this, so that the sound transmitted to the distal end of the distal end of the user's own hearing (acoustic) echo.

[0003] 声学回声消除(acoustic echo cancellation, AEC)可以消除通信信号中的声学回声。 [0003] The acoustic echo cancellation (acoustic echo cancellation, AEC) can eliminate acoustic echo in a communication signal. 因此,声学回声消除是保证通信中声音质量的一种关键能力。 Therefore, acoustic echo cancellation capability is a key to ensure the sound quality of communications. 在分组网络中,相比传统的声学回声消除(AEC),基于分组的声学回声消除(Packet-based AEC,PAEC)技术更为有效。 In a packet network, as compared to the conventional acoustic echo cancellation (the AEC), based on the elimination of acoustic echo packet (Packet-based AEC, PAEC) technology more efficient.

[0004] 在此,基于分组的声学回声消除是指:通过对分组的编码参数进行直接比较与预测,将参考流分组与目标流分组在PAEC信道里相对比,从而移除(目标流中的)相似分组(被认定为声学回声),以实现在分组网络中消除/抑制分组形式的声学回声。 [0004] Here, a packet-based acoustic echo cancellation means: coding parameters grouped by direct comparison with prediction, and the reference target flow stream packet in a packet as opposed to hang PAEC letter, thereby removing (target stream ) is similar to the packet (identified as acoustic echo), in order to achieve cancellation / suppression in the form of acoustic echo packets in a packet network.

[0005] 因为不是每个用户设备都配备有声学回声消除(AEC)装置,媒体网关设备(Media Gateway, MG/MGW,以下简称MG)有必要使用PAEC装置阻止声学回声的传播。 [0005] Since each user equipment is not equipped with acoustic echo cancellation (AEC) device, a media gateway device (Media Gateway, MG / MGW, hereinafter referred to as MG) is necessary to prevent the spread of the use of PAEC means of acoustic echo.

[0006] 图1示出媒体网关通信架构的示意图。 [0006] FIG. 1 shows a schematic view of a media gateway of a communications architecture.

[0007] 如图1所示,媒体网关控制设备(Media Gateway Controller,以下简称MGC)可以经由多个H. 248链路来控制多个媒体网关设备。 [0007] As shown in FIG 1, the media gateway control apparatus (Media Gateway Controller, hereinafter referred to as MGC) may control a plurality of devices via a plurality of media gateways H. 248 link. H. 248消息是一种在H. 248链路上传输的信令消息,MGC用H. 248消息来管理和维护MG上的承载资源。 H. 248 message is a signaling message for transmitting over the link H. 248, MGC with H. 248 messages to manage and maintain bearer resources on MG.

[0008] 在承载资源中,电路中继(circuit trunk)或分组中继(packet trunk)用于连接MG,以供MG之间承载载荷的传输。 [0008] In the bearer resources, the relay circuit (circuit trunk) or a relay packet (packet trunk) for connecting the MG, carrying a load for transmission between the MG. 不同类型的用户也被连接至MG,其中,用户包括但不限于移动用户、POTS (Plain Old Tel印hone Service,普通老式电话业务,或称为模拟电话业务) 用户、软件电话用户。 Different types of users are connected to the MG, wherein the user including but not limited to mobile subscribers, POTS (Plain Old Tel printing hone Service, plain old telephone service, analog telephone service or called) user, the telephone user software.

[0009] 终结点(Termination)是MG中的逻辑实体,用于发起和/或接收媒体流和/或控制流。 [0009] The endpoint (the Termination) is a logical entity in the MG, for initiating and / or receive media streams and / or control streams. 在H. 248消息中,终结点可以用来表示中继和用户,为便于说明,本发明中采用用户终结点表示用户,IP终结点表示分组/IP中继,以及TDM终结点表示电路/TDM中继。 In H. 248 message, the endpoint may be used to represent the relay and the user, for convenience of explanation, the present invention is employed in a user endpoint represent users, IP packet indicates the endpoint / IP relay, and a circuit termination TDM / TDM relay.

[0010] 关联(Context)是一组终结点之间的联系。 [0010] association (Context) links between a group of endpoints. 例如,在H. 248消息中,关联用于表示多个在MG中内部连接的终结点及它们之间的联系,但关联不能跨越两个MG。 For example, in the H. 248 message, the association representing a link between a plurality of endpoints in the MG and their internal connections, but not across the associated two MG. 一个关联可视作一个呼叫支路(call leg)。 An association may be considered a call leg (call leg).

[0011] Η. 248数据包(package)是用于扩展的主要机制。 [0011] Η. 248 packets (package) is the primary mechanism for extension. Η. 248数据包定义了可能在终结点、关联上发生的额外属性,以及可能在终结点上发生的事件、信号和统计。 Η. 248 data package defines additional attributes that may occur on the endpoint, associations, and events that may occur on the endpoint, signals and statistics.

[0012] 然而,在当前的媒体网关通信架构中,由于现有Η. 248数据包不能提供合适的消息接口,MGC不能有效地控制MG执行PAEC功能。 [0012] However, in the current media gateway communication architecture, since the conventional Η. 248 packets not provide a suitable interface to the message, the MGC controls the MG can not effectively perform the function PAEC. 例如,当引入双向或会议方向PAEC,以及多个终结点均可执行PAEC时,MGC需要更灵活和丰富的接口来控制执行PAEC的MG,其中, 通过接口传递的信息包括指定执行PAEC的终结点、执行PAEC的方向等。 For example, when introduced into a two-way or conference PAEC direction, and a plurality of endpoints may be executed when PAEC, the MGC needs more flexible and rich interface to control the execution of the MG PAEC, wherein the transmission via the interface comprises performing the specified endpoint of PAEC , such as the direction of the implementation of the PAEC.

[0013] 现有的解决方案实际上均为变通方式,其包括以下3种方式: [0013] Existing solutions are actually alternative embodiment, which comprises the following three ways:

[0014] 1)变通方式I [0014] 1) I workarounds

[0015] 图2示出消除声学回声的变通方式1的示意图。 [0015] Figure 2 shows a schematic view of an alternative embodiment of the elimination of acoustic echo.

[0016] 在这种方式中,PAEC模块被从MG中移出到单独的网元,因此,MGC需要通过H. 248 以外的其它协议来控制PAEC模块。 [0016] In this manner, the module is removed from the PAEC MG into a single network element, and therefore, the MGC needs to be controlled by another protocol module PAEC than 248 H..

[0017] 这种变通方式增加了媒体网关通信架构的复杂性。 [0017] This alternative embodiment adds complexity to the media gateway of a communications architecture.

[0018] 2)变通方式2 [0018] 2) 2 workarounds

[0019] 现有技术中,tdmc/ec 数据包(TDM Circuit/Echo Cancellation)被设计来用于TDM电路的回声消除,其并不适合IP终结点和非POTS用户终结点。 [0019] In the prior art, tdmc / ec packet (TDM Circuit / Echo Cancellation) are designed for TDM echo cancellation circuit, which is not suitable for non-IP endpoint POTS users and endpoints. 变通方式2通过借用这种数据包,并将其强制应用在IP终结点或非POTS用户终结点上来消除声学回声。 2 by way of borrowing the work packets, and forces its application in the IP endpoint or endpoints up POTS users to eliminate acoustic echo.

[0020] 然而,这种应用方式违反了tdmc/ec数据包的设计初衷。 [0020] However, this application is designed manner that violates the tdmc / ec packets. 并且,由于tdmc/ec数据包过于简单,没有丰富的PAEC属性参数,如指定执行PAEC的终结点和/或执行PAEC的方向,因此,这种方式不能提供MGC所需的灵活性。 Further, since the tdmc / ec packet is too simple, not rich in PAEC property parameters, such as specifying the execution direction PAEC endpoints and / or execution of PAEC, therefore, this approach does not provide the flexibility needed to MGC.

[0021] 以下示出tdmc/ec数据包被强制应用在用户终结点上的示例性H. 248消息: [0021] The following illustrates tdmc / ec packet is enforced on the user endpoint exemplary H. 248 message:

[0022] ! /IM [0022]! / IM

[0023] T = 312998267 {C = 303826183{MF = B/0_115_3_1264/0102050001179f/4a9901f 101{Μ{0{tdmc/ec = on}}}}} [0023] T = 312998267 {C = 303826183 {MF = B / 0_115_3_1264 / 0102050001179f / 4a9901f 101 {Μ {0 {tdmc / ec = on}}}}}

[0024] 其中,B表示一种非POTS用户终结点。 [0024] wherein, B represents a non-POTS user endpoints. 从以上消息可以看出,该tdmc/ec数据包的应用与TDM电路无任何关系,且该数据包非常简单、未包含PAEC相关的参数。 As can be seen from the above message, the tdmc / ec packet and TDM circuits application no relation, and the data packet is very simple, does not contain a parameter related to the PAEC.

[0025] 3)变通方式3 [0025] 3) 3 workarounds

[0026] 由MG自行决定何时、在哪个终结点以及如何执行PAEC,而非由MGC进行控制。 [0026] decide when the MG, which end point and how to perform PAEC, and not controlled by the MGC.

[0027] 但是,如果由同一个MGC控制的多个MG是由不同供应商提供的,这种方式容易遇到不兼容、不同步的问题。 [0027] However, if multiple MG controlled by the same MGC are provided by different vendors, this approach is not likely to encounter compatibility problems are not synchronized.

发明内容 SUMMARY

[0028] 本发明的目的是提供一种基于分组的声学回声消除方法与装置。 [0028] The object of the present invention is to provide a method and apparatus for packet-based acoustic echo cancellation.

[0029] 根据本发明的一个方面,提供了一种用于基于分组的声学回声消除的方法,其中, 一个媒体网关控制设备连接一个或多个媒体网关设备,其中,该方法包括: [0029] In accordance with one aspect of the invention, there is provided a method for acoustic echo cancellation in a packet-based, wherein a media gateway control device connected to one or more media gateway device, wherein the method comprises:

[0030] -根据相互之间待进行语音数据传输的媒体网关设备中终结点所支持的回声消除方向,确定对应其中一个或多个媒体网关设备的回声消除指示信息,以用于指示对应媒体网关设备中执行基于分组的声学回声消除的终结点及其所采用的回声消除方向; [0030] - The media gateway device from each other to be voice data transmission endpoints supported echo cancellation directions, wherein the one or more determining a corresponding media gateway device echo cancellation indication information for indicating the corresponding media gateway apparatus performing echo packet based endpoint acoustic echo cancellation and elimination direction employed;

[0031] -将所确定的回声消除指示信息发送至对应媒体网关设备。 [0031] - The echo canceller indicative of the determined information to the corresponding media gateway device.

[0032] 根据本发明的一个方面,还提供了一种基于分组的声学回声消除方法,其中,一个媒体网关设备包括多个终结点,其中,该方法包括: [0032] In accordance with one aspect of the present invention, there is provided a packet-based acoustic echo cancellation method, wherein a media gateway device comprises a plurality of endpoints, wherein the method comprises:

[0033] -自媒体网关控制设备接收回声消除指示信息; [0033] - receiving from the Media Gateway Control Apparatus echo cancellation indication information;

[0034]-根据所述回声消除指示信息,确定执行基于分组的声学回声消除的终结点及其所采用的回声消除方向,以由所指示的终结点按照所述回声消除方向来执行基于分组的声学回声消除。 [0034] - The indication information to the echo cancellation, performing echo cancellation direction is determined based on the termination of acoustic echo cancellation packet and employed, in order from the indicated endpoints performs echo cancellation on the packet according to the direction acoustic echo cancellation.

[0035] 根据本发明的一个方面,还提供了一种在媒体网关控制设备中用于基于分组的声学回声消除的装置,其中,一个媒体网关控制设备连接一个或多个媒体网关设备,其中,该装置包括: [0035] In accordance with one aspect of the present invention, there is provided a Media Gateway Control Apparatus for acoustic echo cancellation device based on a packet, wherein a media gateway control device connected to one or more media gateway device, wherein, the apparatus comprising:

[0036] 确定装置,用于根据相互之间待进行语音数据传输的媒体网关设备中终结点所支持的回声消除方向,确定对应其中一个或多个媒体网关设备的回声消除指示信息,以用于指示对应媒体网关设备中执行基于分组的声学回声消除的终结点及其所采用的回声消除方向; [0036] determining means for each media gateway device to be performed between the transmission of voice data in the endpoint supports echo cancellation directions, wherein the one or more determining a corresponding media gateway device echo cancellation information indicating, for indicates that the corresponding media gateway device in the direction of eliminating a packet-based acoustic echo cancellation and echo endpoints employed;

[0037] 发送装置,用于将所确定的回声消除指示信息发送至对应媒体网关设备。 [0037] transmitting means for indicating the determined echo cancellation information to the corresponding media gateway device.

[0038] 根据本发明的一个方面,还提供了一种在媒体网关设备中基于分组的声学回声消除装置,其中,一个媒体网关设备包括多个终结点,其中,该装置包括: [0038] In accordance with one aspect of the present invention, there is provided an acoustic echo cancellation device based on a packet in a media gateway device, wherein the media gateway device comprises a plurality of endpoints, wherein, the apparatus comprising:

[0039] 接收装置,用于自媒体网关控制设备接收回声消除指示信息; [0039] The receiving means for receiving from the Media Gateway Control Apparatus echo cancellation indication information;

[0040] 执行装置,用于根据所述回声消除指示信息,确定执行基于分组的声学回声消除的终结点及其所采用的回声消除方向,以由所指示的终结点按照所述回声消除方向来执行基于分组的声学回声消除。 [0040] execution means for canceling echoes, according to the indication information, determines to perform echo cancellation on direction packet endpoints and acoustic echo canceller used to cancel the echo in accordance with the direction indicated by the termination based on the implementation of the elimination of acoustic echo packets.

[0041] 根据本发明的一个方面,还提供了一种基于分组的声学回声消除方法,其中,一个媒体网关控制设备连接一个或多个媒体网关设备,一个媒体网关设备包括多个终结点,其中,该方法包括: [0041] In accordance with one aspect of the present invention, there is provided a packet-based acoustic echo cancellation method, wherein a media gateway control device connected to one or more media gateway, a media gateway device comprises a plurality of endpoints, wherein , the method comprising:

[0042] -媒体网关控制设备根据相互之间待进行语音数据传输的媒体网关设备中终结点所支持的回声消除方向,确定对应其中一个或多个媒体网关设备的回声消除指示信息,以用于指示对应媒体网关设备中执行基于分组的声学回声消除的终结点及其所采用的回声消除方向; [0042] - Media Gateway Control Apparatus The media gateway device from each other to be voice data transmission endpoints supported echo cancellation directions, wherein the one or more determining a corresponding media gateway device echo cancellation information indicating, for indicates that the corresponding media gateway device in the direction of eliminating a packet-based acoustic echo cancellation and echo endpoints employed;

[0043]-媒体网关控制设备将所述回声消除指示信息发送至对应媒体网关设备; [0043] - Media Gateway Control Apparatus The echo canceller indication information to the corresponding media gateway device;

[0044] -相应媒体网关设备根据所接收的回声消除指示信息,确定其中执行基于分组的声学回声消除的终结点以及相应终结点所采用的回声消除方向,以由所指示的终结点按照相应回声消除方向来执行基于分组的声学回声消除。 [0044] - a corresponding media gateway device to eliminate indication information based on the received echo to determine which echo cancellation direction of the packet-based acoustic echo cancellation endpoints and the corresponding endpoint employed executed, the endpoint to the indicated according to the respective echo elimination direction to perform acoustic echo cancellation on the packet.

[0045] 与现有技术相比,本发明中由媒体网关控制设备(MGC)来控制媒体网关设备(MG) 执行基于分组的声学回声消除(PAEC),其中,MGC确定对应于MG的回声消除指示信息,以指示对应MG中执行基于分组的声学回声消除的终结点及其所采用的回声消除方向,并将回声消除指示信息发送至对应MG,随后,由对应MG中被指示的终结点按照所指示的回声消除方向来执行基于分组的声学回声消除。 [0045] Compared with the prior art, the present invention is to control a media gateway apparatus by a media gateway control device (the MGC) (MG) performs packet-based acoustic echo cancellation (the PAEC), wherein, the MGC to the MG determines the corresponding echo cancellation indication information to indicate corresponding packet in the MG is performed based on the acoustic echo canceller and echo cancellation direction endpoint used, echo cancellation and a corresponding indication information to the MG, then the endpoint is indicated by the corresponding MG in accordance with direction indicated by the echo canceller is performed based on the elimination of acoustic echo packet.

[0046] 本发明提供了清楚、灵活、标准化、可拓展的方案来由MGC控制MG的PAEC,其中: [0046] The present invention provides a clear, flexible, standardized, scalable solutions reason PAEC MGC controlling the MG, wherein:

[0047] 清楚-MGC可以清楚地指示MG在何时、由其中哪个终结点以及如何执行PAEC。 [0047] clear -MGC MG can clearly indicate when and which of the endpoints and how to perform PAEC.

[0048] 灵活-可以灵活地体现MG的PAEC特性。 [0048] flexibility - the flexibility to reflect the characteristics of the PAEC MG.

[0049] 标准化-采用标准机制(也即,H. 248数据包)来封装回声消除指示信息,以进行PAEC控制,从而很容易被本领域技术人员所遵循。 [0049] Standardization - using standard mechanisms (i.e., H 248 packets.) Echo cancellation to package instructions, for PAEC controlled so easily be followed by one skilled in the art.

[0050] 可拓展-如果需要,可以增加更多的用于回声消除指示的参数。 [0050] can be extended - if necessary, add more parameters for echo cancellation instructions.

[0051] 由于PAEC主要用于分组网络,本发明的方案可以适用于分组交换的纯正MG,或者具有分组交换模块的变种MG。 [0051] Since the packet network is mainly used for PAEC, the present invention may be applicable to pure packet switched MG, MG or a variant of the packet switching module.

附图说明 BRIEF DESCRIPTION

[0052] 通过阅读参照以下附图所作的对非限制性实施例所作的详细描述,本发明的其它特征、目的和优点将会变得更明显: [0052] The accompanying drawings by reading the following detailed description of non-limiting embodiments, and other features, objects and advantages of the invention will become more apparent:

[0053] 图1示出媒体网关通信架构的示意图; [0053] FIG. 1 shows a schematic view of a communications architecture media gateway;

[0054] 图2示出消除声学回声的一种变通方式的示意图; [0054] Figure 2 shows a schematic view of an alternative embodiment of the acoustic echo cancellation;

[0055] 图3示出根据本发明一个实施例的由MGC控制MG的PAEC的方法流程图; [0055] FIG. 3 is a flowchart illustrating a method of controlling the PAEC MGC MG according to one embodiment of the present invention;

[0056] 图4示出根据本发明的一个优选实施例的由MGC控制MG的PAEC的媒体网关通信系统不意图; [0056] FIG. 4 shows a communication system PAEC media gateways controlled by the MGC MG according to a preferred embodiment of the present invention is not intended;

[0057] 图5示出图4所示系统中MGC控制MG的PAEC的信号流图; [0057] FIG. 5 shows a signal flow diagram PAEC system shown in FIG. 4 MGC controlling the MG;

[0058] 图6示出根据本发明的另一个优选实施例的由MGC控制MG的PAEC的媒体网关通信系统示意图; [0058] FIG. 6 shows a schematic diagram of a communication system PAEC Media Gateway MGC MG is controlled by a further preferred embodiment of the present invention;

[0059] 图7示出图6所示系统中MGC控制MG的PAEC的信号流图; [0059] FIG 7 illustrates a signal flow diagram of FIG PAEC MGC controlling the MG system shown in Figure 6;

[0060] 图8示出根据本发明的再一个优选实施例的由MGC控制MG的PAEC的媒体网关通信系统示意图; [0060] FIG. 8 shows a schematic view of a communication system according to PAEC media gateway controlled by the MGC MG in accordance with another preferred embodiment of the present invention;

[0061] 图9示出图8所示系统中MGC控制MG的PAEC的信号流图; [0061] FIG 9 shows a signal flow diagram of FIG PAEC MGC controlling the MG system shown in Figure 8;

[0062] 图10示出根据本发明另一个实施例的由MGC控制MG的PAEC的媒体网关通信系统的装置示意图。 [0062] FIG. 10 shows a schematic diagram of a communication apparatus PAEC media gateway controlled by the MGC MG system according to another embodiment of the present invention.

[0063] 附图中相同或相似的附图标记代表相同或相似的部件。 [0063] In the drawings the same or similar to the same or like reference numerals refer to the components.

具体实施方式 detailed description

[0064] 下面结合附图对本发明作进一步详细描述。 [0064] The following figures of the present invention will be further described in detail with.

[0065] 本发明提供了一种基于分组的声学回声消除(PAEC)方案,其通过媒体网关控制设备(MGC)与媒体网关设备(MG)的交互来实现。 [0065] The present invention provides a packet-based acoustic echo cancellation (the PAEC) scheme, to achieve its control interaction device (MGC) and a media gateway device (MG) by the media gateway. 具体地,MGC根据相互之间待进行语音数据传输的MG中终结点所支持的回声消除方向,确定对应其中一个或多个MG的回声消除指示信息,以用于指示相应MG中执行基于分组的声学回声消除的终结点及其所采用的回声消除方向;接着,MGC将所确定的回声消除指示信息发送至对应MG ;随后,每个接收到回声消除指示信息的MG根据所接收的回声消除指示信息,确定其中执行基于分组的声学回声消除的终结点以及相应终结点所采用的回声消除方向,以由被指示的终结点按照所指示的回声消除方向来执行基于分组的声学回声消除。 Specifically, the MGC according to the MG terminations each other for transmission of voice data to be supported echo cancellation directions, determine the corresponding MG wherein the one or more echo cancellation indication information for indicating the corresponding packet is performed based on the MG acoustic echo cancellation and termination of the echo cancellation directions employed; Next, the MGC the determined indication information to the echo canceller corresponding to the MG; subsequently, each echo canceller according to the MG receives the indication information indicating the received echo cancellation information, which determines the direction of packet-based echo cancellation performed acoustic echo cancellation and the corresponding endpoints endpoint used to eliminate the termination is instructed in accordance with the direction indicated by the echo performs packet-based acoustic echo canceller.

[0066] 需要说明的是,本发明旨在针对由MGC来控制MG执行PAEC,对于本文中的各种关于回声消除的相关表述,诸如回声消除方向、回声消除指示信息,其均在PAEC场景下被提及,也即,回声消除方向意指PAEC方向,回声消除指示信息意指关于PAEC的指示信息。 [0066] Incidentally, the present invention is intended for PAEC performed by the MG to the MGC controlling, for a variety of related expressed herein on echo cancellation, echo cancellation, such as directions, echo cancellation information indicating that the scene are at PAEC It is mentioned, i.e., the echo canceller PAEC direction means the direction, the echo canceller indication information indicating means information about the PAEC.

[0067] 通常地,一个MGC连接/控制一个或多个MG。 [0067] Typically, a MGC connection / control one or more MG. 因此,相互之间待进行语音数据传输的MG可能均由同一个MGC控制,也可能由不同MGC控制。 Thus, to be performed between each transmission of voice data may MG by the MGC to control the same, it may be controlled by a different MGC.

[0068] 在此,相互之间待进行语音数据传输的MG包括但不限于连接用户的MG、中转MG 等。 MG [0068] Here, to be performed between each transmission of voice data but not limited to a user connected to MG, MG et transit. 其中,多个连接用户的MG可以经由中转MG来进行语音数据传输。 Wherein a plurality of users connected to MG can be performed via a voice data transmission relay MG.

[0069] 并且,一个MG中具有多个终结点。 [0069] Further, the MG has a plurality of endpoints. MG中的全部终结点可能均具有PAEC功能,也可能仅其中部分终结点具有PAEC功能。 All terminations in the MG may have PAEC functions, some of which may only have a termination function PAEC. 进一步地,对于具有PAEC功能的终结点,其所支持的回声消除方向也可能是不同的。 Further, for the endpoint has PAEC function, it supports echo cancellation direction may also be different.

[0070] 在此,回声消除方向即PAEC方向,其包括但不限于:单出、单入、双向、会议。 [0070] Here, the echo cancellation directions i.e. direction PAEC, including but not limited to: a single, one-in, two-way conference.

[0071] 其中,单出是指由本端至远端的方向;单入是指由远端至本端的方向;双向是指由本端至远端以及由远端至本端这两个方向;会议是指,为全部支路提供PAEC。 [0071] wherein a refers to a single direction from the local end to a distal end; refers to a single-direction from the distal end to the present end; Bidirectional refers to the distal end by the distal end to the local end and the both directions; Meeting It refers to all of the branches to provide PAEC.

[0072] 进一步地,一些支持双向PAEC的终结点,可以仅执行单出PAEC、或仅执行单入PAEC,换言之,这些支持双向PAEC的终结点也可支持单入或单出。 [0072] Furthermore, some support bidirectional PAEC endpoint may be performed only a single PAEC, or to perform only a single-PAEC, in other words, these support bi PAEC endpoint also support single-input or single-out.

[0073] 当MG加入MGC的控制网络,即通过H. 248链路与MGC连接,MG会向MGC上报其终结点的相关信息,如终结点数量、终结点是否支持PAEC及其执行方向等。 [0073] When added MG MGC control network, i.e. the connection through H. 248 link and the MGC, MG will report the information to the MGC termination thereof, such as the number of endpoints, endpoints support PAEC direction of its implementation. 从而,MGC可根据各MG上报的终结点的相关信息,确定对于相关MG的回声消除指示信息,以控制MG来执行PAEC。 Thus, the MGC according to the information reported by each endpoint MG, MG is determined for the echo cancellation instructions related to control the MG to perform PAEC. 优选地,回声消除指示信息可以包含在H. 248消息中被发送至对应的MG。 Preferably, the echo canceller may comprise indication information is transmitted to the corresponding message in the H. 248 MG.

[0074] 或者,对MG中的终结点的PAEC能力信息进行预先配置(Provisioning),如用户终结点全部支持单出的PAEC,IP终结点全部支持双向的PAEC等,从而MGC可以预先知道其所控制的某个MG上所有终结点支持PAEC的情况,而无须相应MG动态上报。 [0074] Alternatively, the capability information of PAEC endpoints are preconfigured MG (the Provisioning), as all user endpoints supported PAEC single out, all of the IP endpoint to support bidirectional PAEC the like, so that they know in advance can MGC support for all endpoints on a PAEC control of MG, MG without corresponding dynamic reporting. 但是,MG需要向MGC及时上报其中终结点的状态信息,如终结点处于活动状态(Active)或无法使用状态(OutOfService)。 However, MG requires timely reporting of status information which endpoint to MGC, such as the end point in the active state (Active) or unusable state (OutOfService). 对于其中处于无法使用状态的终结点,该(等)终结点不会被用于此次语音通话;对于其中处于活动状态的终结点,MGC根据预先知道的相应终结点的PAEC能力信息来决定该(等)终结点如何执行PAEC。 Wherein the endpoint is not for use state, the (other) endpoint is not used for this voice call; for which the endpoint is active, the MGC according to the determined capability information corresponding PAEC known in advance of the termination how (and other) endpoint execution PAEC.

[0075] 当相互之间待进行语音数据传输的MG均由同一个MGC控制时,该MGC可根据这些MG中终结点所支持的回声消除方向,确定应用于此次语音数据传输的回声消除指示信息, 即对应于其中一个或多个MG的回声消除指示信息,以指示相应MG中执行PAEC的终结点及其所采用的回声消除方向。 [0075] When the MG to each other between the voice data transmission to be performed by the same MGC controls, the MGC can be supported by the MG according to the termination of these echo cancellation directions, determine the transmission of voice data is applied to echo cancellation indication information, i.e., corresponding to which one or more echo cancellation MG indication information, indicating the termination PAEC employed and the echo corresponding direction of eliminating the MG.

[0076] 当相互之间待进行语音数据传输的MG由不同MGC控制时,这些MGC可根据各自控制的MG中终结点所支持的回声消除方向,协商来确定应用于此次语音数据传输的回声消除指示信息,即对应于其中一个或多个MG的回声消除指示信息,以指示相应MG中执行PAEC 的终结点及其所采用的回声消除方向。 [0076] When the MG to be voice data transmission between each controlled by different MGC, the MG MGC can eliminate directions from their respective controlled termination echo supported, the negotiation to determine the transmission of voice data is applied to the echo elimination of the instruction information, i.e., which corresponds to the one or more echo cancellation MG indication information, indicating the termination PAEC employed and the echo corresponding direction of eliminating the MG.

[0077] 其中,由于MGC可能确定仅由相互之间待进行语音数据传输的MG中的部分MG来执行PAEC,回声消除指示信息并不需要发送至参与此次语音数据传输的所有MG,而仅需发送至其中由MGC指示来执行PAEC的特定MG,即包括由MGC确定来执行PAEC的终结点的MG。 [0077] wherein, since the determination may be only partially MGC MG MG in the transmission of voice data from each other to be performed between the PAEC, echo cancellation information indicating the MG does not need to be sent to all involved in the transmission of voice data, but only wherein to be sent by the MGC indicates the MG to perform a particular PAEC, i.e., performed by the MGC comprises determining the endpoint of PAEC MG. [0078] 由于相互之间待进行语音数据传输的MG包括连接用户的MG,以及为这些连接用户的MG中转语音数据的中转MG,MGC可以确定由连接用户的MG和/或中转MG中的终结点来执行PAEC。 [0078] Since the transmission of voice data between the MG to be subjected to another user connected comprise MG, MG transfer voice and data users connected to these transit MG, the MGC may be determined by a user's connection MG and / or termination of the transit MG point to perform the PAEC. 为简单说明起见,本文中多以MGC确定由连接用户的MG来执行PAEC,并将所确定的回声消除指示信息发送至相应连接用户的MG进行举例。 For simplicity of explanation, herein, to a multi-PAEC MGC determination performed by the connecting user MG, and to eliminate the determined indication information to the echo corresponding to the MG example connected users. 本领域技术人员应能理解, 如果MGC确定由中转MG来执行PAEC,则MGC将所确定的回声消除指示信息发送至相应中转MG0 Those skilled in the art should understand that, if the MGC determination performed by the transfer PAEC the MG, the MGC the determined echo canceller indication information sent to the corresponding relay MG0

[0079] 图3示出根据本发明一个实施例的方法流程图,其中示出由MGC控制MG来执行PAEC的过程。 [0079] FIG. 3 shows a flowchart of the method according to one embodiment of the present invention, showing the process performed by the PAEC controlled MG MGC.

[0080] 配合参阅图1示出的媒体网关通信架构,其中,MG21及MG22连接至MGC10,MG21与MG22之间待进行语音数据传输。 [0080] refer to the media gateway with a communication infrastructure shown in FIG. 1, wherein, MG21 and MG 22 is connected to MGC10, voice data transmission to be performed between MG21 and MG22. 需要说明的是,尽管图1中MG21与MG22均连接至MGC10, 这仅用于便于理解及说明本发明之目的,而不应被视为对本发明的任何限制,例如,MG21与MG22同样可分别连接至不同的MGC,并由各自的MGC来控制其PAEC。 Note that, although FIG. 1 MG21 and MG22 are connected to MGC10, this is merely for purposes of illustration and ease of understanding the present invention, and should not be considered as any limitation of the present invention, for example, MG21 and MG22 are equally connected to a different MGC, MGC is controlled by its respective PAEC.

[0081] 进一步地,MG21中的用户终结点Sl与IP终结点Il建立关联3,MG22中的用户终结点S2与IP终结点12建立关联4,从而MG21与MG22中的这两个用户终结点Sl与S2经由各自关联的IP终结点Il与12之间的分组中继来传输语音数据。 [0081] Further, the user endpoints MG21 Sl and associated IP endpoint Il 3, MG22 user endpoints and S2 associated IP endpoint 12 4, MG21 and MG 22 so that two users of endpoints Sl and S2 via a respective associated IP packet relay endpoints between Il and 12 to transmit voice data.

[0082] 仍参阅图3,具体地,在步骤Z301中,MGClO根据MG21与MG22中终结点所支持的回声消除方向,确定对应其中一个或多个MG的回声消除指示信息,以用于指示对应MG中执行PAEC的终结点及其所采用的回声消除方向。 [0082] Still referring to FIG 3, specifically, in the step Z301, MGClO The MG21 and MG22 are supported in the direction of the endpoint echo cancellation, which is determined corresponding to the one or more echo cancellation MG indication information for indicating a corresponding MG performed PAEC endpoint used and echo cancellation direction.

[0083] 在此,由于MG中各终结点所支持的回声消除方向可能是不同的,例如,有些终结点仅支持单出PAEC,有些终结点支持双向PAEC,因此,当MG21中的用户终结点Sl与MG22 中的用户终结点S2需进行语音数据传输时,MGClO需根据MG21和MG22中与该语音数据传输有关的终结点所支持的回声消除方向,来确定相应的回声消除指示信息。 [0083] Here, since the MG each endpoint supports echo cancellation directions may be different, e.g., some of the endpoint supports only single out the PAEC, some endpoints support bidirectional the PAEC, therefore, when the MG21 user endpoints when the user MG22 Sl and S2 for an endpoint for voice data transmission, MGClO eliminate the need MG21 and MG22 directions from the transmission of voice data with the relevant endpoints supported by the echo, the echo canceller to determine the corresponding indication information.

[0084] 其中,MGClO所确定的回声消除指示信息可能仅对应MG21与MG22中之一,也可能与两者均相关。 [0084] wherein, MGClO the determined echo cancellation instruction information may correspond to only one of the MG21 and MG22, also may be associated with both.

[0085] 例如,仍参阅图1,MG21中的用户终结点Sl支持单出PAEC,IP终结点Il支持单入PAEC ;MG22中的用户终结点S2支持双向PAEC。 [0085] For example, still referring to FIG 1, MG21 user endpoints Sl support a single PAEC, IP endpoint to support a single-Il PAEC; MG22 user endpoints S2 support bidirectional PAEC.

[0086] 据此,MGClO可以确定多种PAEC执行方案。 [0086] Accordingly, MGClO can be determined more PAEC implementation. 例如,MGClO可以仅确保在一个通信方向上执行PAEC,如MGClO指示由MG21中的用户终结点Sl执行PAEC,并且PAEC方向为单出。 For example, to ensure that only MGClO PAEC performed in one communication direction, such as MG21 MGClO indicated by the end user PAEC point Sl is executed, and the single direction PAEC.

[0087] 优选地,PAEC执行方案可基于实现双向PAEC来确定,即实现双工PAEC,从而生成相应的回声消除指示信息。 [0087] Preferably, PAEC scheme may be determined based on the implementation of bidirectional PAEC, i.e. to achieve a duplexer PAEC, thereby generating a corresponding echo cancellation instructions. 在此,双向是指通信双方相互之间的两个通信方向,例如,由MG21至MG22以及由MG22至MG21这两个方向。 Here, the bidirectional communication refers to a communication direction between the two sides to each other, e.g., to the MG21 and MG22 MG22 to MG21 from the two directions.

[0088] 基于实现双向PAEC来确定回声消除指示信息,可以为通信双方均提供PAEC,提高通信服务质量。 [0088] Based on two-way PAEC to determine the echo cancellation instructions, can provide both sides PAEC communication, improve communication quality service.

[0089] 例如,仍接前例,各种双向PAEC执行方案如下: [0089] For example, still take precedent, various programs executed bidirectional PAEC follows:

[0090] 方案1 :由MG21中的用户终结点Sl执行PAEC,并且PAEC方向为单出,以及由MG22 中的用户终结点S2执行PAEC,并且PAEC方向为单出; [0090] Scheme 1: a user endpoint MG21 Sl PAEC performed, and the PAEC single direction, and the user endpoints MG22 performed PAEC S2, and PAEC single-out direction;

[0091] 方案2 :由MG21中的IP终结点Il执行PAEC,并且PAEC方向为单入,以及由MG22 中的用户终结点S2执行PAEC,并且PAEC方向为单入; [0091] Scheme 2: is performed by the IP endpoint MG21 Il PAEC, and PAEC into single direction, and the user endpoints MG22 S2 PAEC performed, and the PAEC single direction;

[0092] 方案3 :由MG21中的用户终结点Sl执行单出PAEC,IP终结点Il执行单入PAEC ; [0092] Scheme 3: MG21 by the user to perform a single endpoint Sl out PAEC, IP endpoint to perform a single into the PAEC Il;

[0093] 方案4 :由MG22中的用户终结点S2执行PAEC,并且PAEC方向为双向。 [0093] Scheme 4: the MG22 user performs endpoint PAEC S2, and the direction is bidirectional PAEC.

[0094] MGClO可以基于各种选择规则来从上述方案中选择拟由MG21和/或MG22执行的PAEC方案。 [0094] MGClO may be selected from the above-described embodiment based on various selection rules proposed by the MG21 and / PAEC MG22 or executed programs. 其中,MGClO所采用的选择规则可由具体应用场景来确定。 Wherein the selection rule used MGClO be determined by the specific application scenario.

[0095] 需要说明的是,本领域技术人员应能理解,对PAEC的执行需做广义理解,即其不仅包括终结点对其PAEC功能的开启,也包括终结点对其PAEC功能的关闭。 [0095] It should be noted that those skilled in the art will appreciate that the implementation of the PAEC need to do a broad understanding that it includes not only the end point of open PAEC its functions, including its endpoints closed PAEC function. 例如,在MGC 确定回声消除指示信息之前,某(些)终结点的PAEC功能是开启的,但根据所确定的PAEC 执行方案,其中部分终结点将不再执行PAEC功能,例如,在向三方通话过渡时,确定来执行PAEC的终结点可能会发生变化,因此,MGC需向其中不再执行PAEC的终结点所属的MG发送相应的回声消除指示信息,以使得该(等)终结点关闭其PAEC功能。 For example, before determining the information indicative of the echo canceller in the MGC, PAEC certain function (s) of the endpoint is on, but the implementation of the program according to PAEC identified, some of which no longer performs endpoint will PAEC functions, for example, in the three-party call transition, it is determined to perform PAEC endpoints may vary, and therefore, the MGC will not need to perform the corresponding MG wherein transmitting endpoint belongs PAEC echo cancellation indication information, so that the (other) endpoint closes its PAEC Features.

[0096] 优选地,回声消除指示信息还用于指示执行PAEC的终结点执行PAEC的时间间隔。 [0096] Preferably, the echo canceller is also used to indicate information indicative of termination of execution PAEC PAEC execution interval.

[0097] 例如,回声消除指示信息可以指示MG21中的用户终结点Sl执行PAEC,回声消除方向为单出,时间间隔为120秒。 [0097] For example, echo cancellation information indicating the user may indicate that the endpoint MG21 Sl perform the PAEC, a single echo cancellation direction, the time interval is 120 seconds.

[0098] 可选的时间间隔可以为一个区间,例如1秒至254秒。 [0098] Optionally the interval may be a range, for example from 1 to 254 seconds.

[0099] 此外,还可用时间间隔255表示开启PAEC,用时间间隔0表示关闭PAEC。 [0099] In addition, time interval 255 may be opened by PAEC, PAEC 0 represents off by time interval.

[0100] 在步骤Z302中,MGClO将所确定的回声消除指示信息发送至对应MG。 [0100] In the step Z302, MGClO the determined indication information to the echo canceller corresponding to the MG.

[0101] 具体如,对于相互之间待进行语音数据传输的多个MG,在步骤Z301中,MGClO可以确定仅对应其中一个MG的回声消除指示信息,则在步骤Z302中,MGClO仅向该MG发送该回声消除指示信息;或者,在步骤Z301中,MGClO确定对应其中至少两个MG的回声消除指示信息,则在步骤Z302中,MGClO向这至少两个MG分别发送其各自对应的回声消除指示信息,即将对应于其中每个MG的回声消除指示信息分别发送至各相应MG。 [0101] In particular, for a plurality of mutually MG voice data to be transmitted, in the step Z301, MGClO which may be determined corresponding to only a MG echo cancellation indication information, then in step Z302, MGClO only to the MG transmitting the echo cancellation indication information; Alternatively, in the step Z301, MGClO wherein determining a corresponding at least two MG echo cancellation indication information, then in the step Z302, MGClO send their respective corresponding echo canceller indicate respectively the at least two MG information, i.e. corresponding to each MG echo cancellation instruction information are transmitted to the respective MG.

[0102] 例如,仍接续上述参阅图1的举例,MGClO在步骤Z301中确定采用上述方案1,并生成相应的回声消除指示信息,即分别生成针对MG21中的用户终结点Sl的PAEC指示以及针对MG22中的用户终结点S2的PAEC指示,MGClO在步骤Z302中将对MG21中的用户终结点Sl的回声消除指示信息发送给MG21,将对MG22中的用户终结点S2的回声消除指示信息发送给MG22。 [0102] For example, still follow the above refer to FIG example 1, Z301 determined MGClO step using the above-described embodiment 1, and generate a corresponding echo cancellation information indicating that generates PAEC indication for the user endpoints MG21 of Sl and for PAEC user termination point S2 is indicated in the MG22, MGClO echo endpoint user in step Sl MG21 Z302 cancellation will send indication information to MG21, MG22 user will end point S2 echo cancellation instruction information to MG22.

[0103] 或者,又如,MGClO在步骤Z301中确定采用上述方案4,并生成相应的回声消除指示信息,则该回声消除指示信息中仅包括对MG22中的用户终结点S2的PAEC指示,MGClO 在步骤Z302中仅将该回声消除指示信息发送至MG22,以指示其用户终结点S2执行双向PAEC。 [0103] Alternatively, another example, MGClO Z301 is determined in step 4 above-described embodiment, and generates the corresponding indication information echo cancellation, the echo canceller PAEC instruction information includes only the user of the endpoint MG22 and S2, MGClO in step Z302 only the echo cancellation instruction information to MG22, to indicate that the user performs bidirectional termination S2 PAEC.

[0104] 优选地,MGC可以将回声消除指示信息包含在H. 248消息中来发送至MG。 [0104] Preferably, MGC echo canceller may be contained in the instruction information is transmitted in the H. 248 message to the MG.

[0105] 例如,MGC可将回声消除指示信息封装在H. 248数据包中,并通过H. 248消息发送至相应的MG。 [0105] For example, the MGC may be encapsulated in echo cancellation information indicating the packet H. 248, and sent to the MG by the corresponding H. 248 message.

[0106] 在此,H. 248数据包格式例如可以如下: . [0106] Here, H 248, for example, data packet format may be as follows:

[0107] 包名: [0107] Package name:

[0108] pkt/ ec [0108] pkt / ec

[0109] 可应用的终结点: [0109] applicable endpoints:

[0110] IP终结点、用户终结点以及会议设施/终结点 [0110] IP endpoint, the user endpoint and meeting facilities / endpoint

[0111] 包参数: [0111] Package parameters:

[0112] 方向=单入(in/incoming)、单出(out/outgoing)、双向(bi-directional)或会议(conference) [0112] = singlet the direction (in / incoming), the mono (out / outgoing), two-way (bi-directional) or meeting (Conference)

[0113] 时间间隔=0 (关闭)、1-254 (秒)、255 (开启) [0113] Interval = 0 (off), 1-254 (seconds), 255 (open)

[0114] 在步骤Z303中,接收到回声消除指示信息的MG根据所接收的回声消除指示信息, 确定其中执行PAEC的终结点及其所采用的回声消除方向,以由所指示的终结点按照相应回声消除方向来执行PAEC。 [0114] In step Z303, the received echo cancellation information indicating MG echo cancellation based on the received indication information, determining which endpoints PAEC performed and the direction of the echo canceller employed to endpoint, as appropriate for the indicated echo cancellation direction to perform the PAEC.

[0115] 例如,仍接续上述参阅图1的举例,在步骤Z301中,MGC10基于上述PAEC执行方案1,确定相应的回声消除指示信息,即分别确定对MG21中的用户终结点Sl的PAEC指示以及MG22中的用户终结点S2的PAEC指示;在步骤Z302中,MGC10将对MG21中的用户终结点Sl的回声消除指示信息发送给MG21,将对MG22中的用户终结点S2的回声消除指示信息发送给MG22 ;在步骤Z303中,MG21根据其所接收的回声消除指示信息确定其中执行PAEC 的终结点为用户终结点S1,回声消除方向为单出,MG22根据其所接收的回声消除指示信息确定其中执行PAEC的终结点为用户终结点S2,回声消除方向为单出,从而MG21和MG22中各自的用户终结点Sl和S2执行单出PAEC。 [0115] For example, still follow the above refer to FIG example 1, in step Z301 are, MGC10 based on the PAEC performed in Scheme 1, to determine the appropriate echo cancellation instruction information, i.e. determine PAEC indication of MG21 user endpoints Sl and PAEC user termination point S2 is indicated in the MG22; in step Z302, users of endpoints Sl MGC10 MG21 echo cancellation will send indication information to MG21, MG22 user will end point S2 echo cancellation instruction information to the MG 22; in step Z303, MG21 echo elimination according to the indication information it receives to determine which endpoint PAEC performed for the user endpoints S1, an echo canceller is a single direction, MG22 elimination instruction information it receives to determine which echo PAEC perform endpoint for the user endpoints S2, the echo canceller is a single direction, whereby the respective MG21 and MG22 user endpoints Sl and S2 perform a single PAEC.

[0116] 进一步地,回声消除指示信息还可以指示执行PAEC的终结点执行PAEC的时间间隔。 [0116] Further, the echo canceller may further indication information indicating execution of the execution termination PAEC PAEC interval.

[0117] 例如,接上例,MGClO还在发送至MG21的回声消除指示信息中进一步指示MG21的用户终结点Sl执行PAEC的时间间隔为120秒,并在发送至MG22的回声消除指示信息中也做同样指示,从而MG21和MG22中各自的用户终结点Sl和S2均按照时间间隔120S来执行单出PAEC。 [0117] For example, connected cases, MGClO MG21 also sent to the echo cancellation instruction information further indicates MG21 user endpoint Sl PAEC execution interval is 120 seconds, and to eliminate the echo in the transmission instruction information to the MG22 also do the same instructions, MG21 and MG22 whereby the respective user endpoints Sl and S2 are performed in time intervals 120S single-out PAEC.

[0118] 图4示出根据本发明的一个优选实施例的由MGC控制MG的PAEC的媒体网关通信系统示意图。 [0118] Figure 4 shows a schematic diagram of a communication system to PAEC media gateway according to a preferred embodiment of the present invention is controlled by the MGC MG. 图5示出图4所示系统中MGC控制MG的PAEC的信号流图。 PAEC FIG. 5 shows a signal flow diagram of a system shown in FIG. 4 MGC to control the MG.

[0119] 如图4所示,MG21和MG22均由同一MGClO控制,且MG21和MG22通过各自的IP终结点Il与12之间的IP中继建立MG间呼叫。 [0119] As shown in FIG. 4, MG21 and MG22 MGClO controlled by the same, MG21 and MG22 and MG to establish a call between the IP relay between each IP endpoint Il and 12. 其中,MG21中的用户终结点Sl不支持PAEC, IP终结点Il支持单出PAEC ;MG22中的用户终结点S2不支持PAEC,IP终结点12支持单出PAEC。 Wherein Sl MG21 user endpoint does not support PAEC, IP endpoints that support single Il PAEC; MG22 user endpoint does not support S2 PAEC, IP endpoint 12 supports a single PAEC. 据此,为实现双向PAEC,MGC10确定MG21中的IP终结点Il和MG22中的IP终结点12均执行单出PAEC,进而确定分别对应MG21和MG22的回声消除指示信息,以分别指示MG21 和MG22 的PAEC。 Accordingly, for the two-way PAEC, MGC10 determined in MG21 and MG22 Il IP endpoint IP endpoint in 12 single out the PAEC were performed, and to determine the corresponding MG21 and MG22 echo cancellation instructions, MG21 and MG22 respectively indicate the PAEC.

[0120] 具体过程如,配合参阅图5,在MG21与MG22的呼叫建立过程中,MGClO在步骤Z511 指示MG21对其用户终结点Sl与IP终结点Il建立关联3,并指示MG22对其用户终结点S2 与IP终结点12建立关联4 ;随后,MGClO在步骤Z512指示MG21来修改其用户终结点Sl 的信号/媒体参数,并在步骤Z513指示MG21来修改其IP终结点Il的媒体参数,包括开启PAEC,方向为单出;接着,MGClO在步骤Z514指示MG22来修改其用户终结点S2的信号/媒体参数,并在步骤Z515指示MG22来修改其IP终结点12的媒体参数,包括开启PAEC,方向为单出。 [0120] As a specific process, referring to FIG. 5, MG21 and MG22 call establishment process, MGClO 3 in association with its user endpoint IP endpoint Sl Il indicated at step Z511 MG21, MG22 and indicating its end users point S2 and the IP endpoint 12 associated 4; then, MGClO at step Z512 indication MG21 to modify its user endpoints Sl signal / media parameters, and the step of Z513 indicates MG21 to modify its IP endpoint Il media parameters, comprising opening the PAEC, direction single out; Next, MGClO step Z514 indication MG22 to modify its user termination signal / media parameters point S2 and at step Z515 indication MG22 to modify its IP endpoint media parameters as at point 12, including opening the PAEC, single-out direction. 随后,MG21与MG22之间可进行语音数据传输,即语音通话,如电话交谈。 Subsequently, between MG21 and MG22 available for voice data transmission, i.e. voice calls, such as telephone conversations.

[0121] 在此,本领域技术人员应能理解,MGClO对MG21和MG22的指示并无严格的顺序关系,MGClO可以先对MG21的PAEC进行指示,再对MG22的PAEC进行指示,反之亦然。 [0121] Here, those skilled in the art should understand, MGClO indication of MG21 and MG22 is not strict sequential relationship, MGClO PAEC can first instruction of MG21, MG22 again instructs the PAEC, and vice versa.

[0122] MGClO指示MG21的IP终结点Il执行单出PAEC的H. 248消息的示例如下: [0122] MGClO indicating an IP endpoint MG21 an example of a single message to PAEC Il H. 248 performs the following:

Figure CN105100524AD00111

[0123] [0123]

[0124] [0124]

Figure CN105100524AD00121

[0125] 其中,Context = 3 表不关联3,Modify = IP Terminationl 表不修改IP 终结点II,Media 表TK媒体参数,LocalControl 表TK本端控制,Mode = SendReceive 表TK收发模式,pkt/aec表示H. 248数据包的包名,回声消除指示信息被封装在该数据包中,direction =out表示执行的PAEC方向为单出,interval = 255表示开启PAEC。 [0125] wherein, Context = 3 Table uncorrelated 3, Modify = IP Terminationl table does not change the IP endpoint II, Media Table TK media parameters, LocalControl table TK local control, Mode = SendReceive Table TK transceiver mode, pkt / aec represents package name H. 248 packets, echo cancellation instruction information is encapsulated in the packet, direction = out PAEC represents a single direction is performed, interval = 255 indicate on PAEC.

[0126] MGClO指示MG22的IP终结点12执行单出PAEC的H. 248消息的示例如下: [0126] MGClO indicating an IP endpoint 12 MG22 example of a single execution of the PAEC H. 248 message is as follows:

Figure CN105100524AD00122

[0127] [0127]

[0128] } } } } [0128]}}}}

[0129] 其中,Context = 4 表不关联4,Modify = IP Termination2 表不修改IP 终结点12,Media 表TK媒体参数,LocalControl 表TK本端控制,Mode = SendReceive 表TK收发模式,pkt/aec表示H. 248数据包的包名,回声消除指示信息被封装在该数据包中,direction =out表示执行的PAEC方向为单出,interval = 255表示开启PAEC。 [0129] wherein, Context = 4 Table uncorrelated 4, Modify = IP Termination2 table does not change the IP endpoint 12, Media Table TK media parameters, LocalControl table TK local control, Mode = SendReceive Table TK transceiver mode, pkt / aec represents package name H. 248 packets, echo cancellation instruction information is encapsulated in the packet, direction = out PAEC represents a single direction is performed, interval = 255 indicate on PAEC.

[0130] 从而,MG21根据所接收的回声消除指示信息,确定由其中的IP终结点Il执行单出PAEC,则该IP终结点Il按照单出执行PAEC ;MG22根据所接收的回声消除指示信息,确定由其中的IP终结点12执行单出PAEC,则该IP终结点12按照单出执行PAEC。 [0130] whereby, MG21 eliminating indication information based on the received echo, is determined by which IP endpoint Il performing single out PAEC, the IP endpoint Il performed PAEC according to single out; MG 22 eliminate indication information based on the received echoes, is determined by the IP endpoint 12 wherein the single execution PAEC, the IP endpoint 12 in accordance with a single execution PAEC.

[0131] 图6示出根据本发明的另一个优选实施例的由MGC控制MG的PAEC的媒体网关通信系统示意图。 [0131] FIG. 6 shows a schematic diagram of a communication system to PAEC media gateway according to another preferred embodiment of the present invention is controlled by the MGC MG. 图7示出图6所示系统中MGC控制MG的PAEC的信号流图。 FIG 7 illustrates a signal flow diagram PAEC system shown in FIG. 6 MGC to control the MG.

[0132] 如图6所示,MG21由MGCll控制,MG22由MGC12控制,MG21和MG22通过各自的IP终结点Il与12之间的IP中继建立MG间呼叫。 As shown in [0132] FIG 6, MG21 controlled by a MGCll, MG22 controlled by a MGC12, MG21 and MG 22 MG to establish a call between the IP relay between each IP endpoint Il and 12. 其中,MG21中的用户终结点Sl支持双向PAEC。 Which, MG21 user endpoints support two-way Sl PAEC.

[0133] MGCll通过与MGC12的协商,为实现双向PAEC,确定由MG21中的用户终结点Sl执行双向PAEC,进一步地,MGCll还可确定该用户终结点Sl执行PAEC的时间间隔为120S,据此,MGCll确定对应MG21的回声消除指示信息,以指示MG21的PAEC。 [0133] MGCll by MGC12 consultation PAEC is bidirectional, the user determines to perform bidirectional PAEC termination of MG21 Sl, further, MGCll endpoint may determine that the user Sl PAEC execution time interval 120S, whereby , MGCll MG21 determine a corresponding echo cancellation indication information to indicate the PAEC of MG21.

[0134] 具体过程如,配合参阅图7,在MG21与MG22的呼叫建立过程中,MGCl 1在步骤Z711 指示MG21对其用户终结点Sl与IP终结点Il建立关联3 ;接着,MGC12在步骤Z712指示MG22对其用户终结点S2与IP终结点12建立关联4 ;随后,MGCll在步骤Z713指示MG21 来修改其用户终结点Sl的信号/媒体参数,包括开启PAEC,方向为双向,持续时间为120S, 并在步骤Z714指示MG21来修改IP终结点Il的媒体参数;接着,MGC12在步骤Z715指示MG22来修改其用户终结点S2的信号/媒体参数,并在步骤Z716指示MG22来修改其IP终结点12的媒体参数。 [0134] As a specific process, referring to FIG. 7, MG21 and MG22 call establishment process, MGCl 1 3 for its association with the user endpoint IP endpoint Sl Il indicated at step Z711 MG21; Next, at step Z712 mgC12 MG22 indicating its users with IP endpoint S2 associated endpoint 12 4; then, MGCll indicated at step Z713 MG21 user to modify its endpoint signal Sl / media parameters, including the PAEC open, two-way direction, duration 120S and the step of Z714 indicates MG21 to modify the IP endpoint Il media parameters; Next, mgC12 indicating MG22 at step Z715 to modify its user termination signal / media parameters point S2 and at step Z716 indication MG22 to modify its IP endpoint 12 media parameters. 随后,MG21与MG22之间可进行语音数据传输,如电话交谈。 Subsequently, between MG21 and MG22 available for voice data transmission, such as telephone conversations.

[0135] 在此,本领域技术人员应能理解,MGCll对MG21的指示以及MGC12对MG22的指示并无严格的顺序关系,MGCll可以先向MG21发送指示信息,MGC12再向MG22发送指示信息, 反之亦然。 [0135] Here, those skilled in the art should understand, MGCll indication of MG21 and MG22 mgC12 indication of the relationship is not a strict order, MGCll transmission instruction information may be Xianxiang MG21, MG22 mgC12 again send indication information, and vice versa versa.

[0136] MGCll指示MG21的用户终结点Sl执行双向PAEC的H. 248消息的示例如下: [0136] The example of performing bidirectional PAEC MGCll H. 248 message indicating MG21 user endpoints Sl follows:

[0137] [0137]

Figure CN105100524AD00141

[0138] 其中,Context = 3 表不关联3, Modify = Subscriber Terminationl 表不修改用户终结点SI, Media表示媒体参数,LocalControl表示本端控制,Mode = SendReceive表示收发模式,pkt/aec表示H. 248数据包的包名,回声消除指示信息被封装在该数据包中, direction = bi表示执行PAEC的方向双向,interval = 120表示开启PAEC的时间间隔为120 秒。 [0138] wherein, Context = 3 is not associated with table 3, Modify = Subscriber Terminationl table does not modify the user endpoints SI, Media represents media parameters, LocalControl represents local control, Mode = SendReceive represented transceiver mode, pkt / aec represents H. 248 package name data packets, echo cancellation instruction information is encapsulated in the packet, direction = bi indicate the direction of execution PAEC bidirectional, interval = 120 indicates turning on PAEC interval is 120 seconds.

[0139] 从而,MG21根据所接收的回声消除指示信息,确定由其中的用户终结点Sl执行双向PAEC,则该用户终结点Sl按照双向执行PAEC,并在计时器期满后,即120S后,关闭PAEC。 [0139] thus, eliminating MG21 indication information based on the received echo, which is determined by the user of the PAEC endpoint performs bidirectional Sl, the user endpoint Sl Following the expiration of a timer, i.e. after the PAEC bidirectionally, and 120S, Close PAEC.

[0140] 图8示出根据本发明的再一个优选实施例的由MGC控制MG的PAEC的媒体网关通信系统示意图。 [0140] FIG. 8 shows a schematic diagram of a media gateway communication system PAEC a further embodiment of the present invention is preferably controlled by the MGC MG. 图9示出图8所示系统中MGC控制MG的PAEC的信号流图。 9 illustrates a signal flow diagram PAEC system shown in FIG. 8 MGC to control the MG.

[0141] 如图8所示,MG21和MG22均由同一MGClO控制,且基于IP终结点14与IP终结点Il之间的IP中继、IP终结点14与IP终结点12之间的IP中继、IP终结点14与IP终结点13之间的IP中继,MG21和MG22建立会议呼叫。 [0141], MG21 and MG22 are controlled by the same MGClO shown in Figure 8, and the IP-based relay point between the IP endpoint and the IP endpoint 14 Il, IP endpoint and the IP endpoint IP 14 between points 12 following, IP endpoint IP 14 and IP relay between the end points 13, MG21 and MG22 establish a conference call. 其中,MG21中的IP终结点14支持会议PAEC。 Which, MG21 in support of IP endpoint 14 meeting PAEC. 据此,MGClO确定MG21中的IP终结点14执行会议PAEC,进而确定对应MG21的回声消除指示信息,以指示MG21的PAEC。 Accordingly, MGClO MG21 determining the IP endpoint 14 performs the PAEC session, and to determine the corresponding indication information echo cancellation MG21, MG21 to indicate the PAEC.

[0142] 具体过程如,配合参阅图9,在MG21与MG22的会议呼叫建立过程中,MGClO在步骤Z911指示MG21对其用户终结点Sl与IP终结点Il建立关联1及对其会议终结点C与IP终结点14建立关联4,并指示MG22对其用户终结点S2与IP终结点12建立关联2及对其用户终结点S3与IP终结点13建立关联3 ;随后,MGClO在步骤Z912指示MG21来修改关联1中的用户终结点Sl和IP终结点Il的信号/媒体参数;接着,MGClO在步骤Z913指示MG22来修改关联2中的用户终结点S2和IP终结点12的信号/媒体参数;随后,MGClO 在步骤Z914指示MG22来修改关联3中的用户终结点S3和IP终结点13的信号/媒体参数;接着,MGClO在步骤Z915指示MG21修改关联4中的IP终结点14的媒体参数,包括开启PAEC,方向为会议。 [0142] As a specific process, referring to FIG. 9, MG21 and MG22 in the conference call setup process, MGClO Z911 MG21 indicated at step Sl its users with IP endpoints endpoint 1 Il and its associated conference endpoint C IP endpoint 14 with associated 4, MG22 and its user indicating the IP endpoint S2 associated termination 12 and its users 2 S3 and the IP endpoint associated endpoint 13 3; subsequently, MGClO indicated at step Z912 MG21 to modify the association of a user endpoints Sl and the IP endpoint Il signal / media parameters; Next, MGClO indicating MG22 at step Z913 to associate modifications in the second user endpoint S2 and the IP termination signal / media parameters as at point 12; subsequently, MGClO at step Z914 indication MG22 to modify the association of three user endpoints S3 and the IP termination signal / media parameters as at point 13; subsequently, MGClO step Z915 indicates MG21 modify the association of 4 IP endpoint media parameters as at point 14, including open PAEC, direction for the meeting. 随后,MG21与MG22之间可进行语音数据传输,如电话会议交谈。 Subsequently, between MG21 and MG22 for voice data transmission, such as a conference telephone conversations.

[0143] 在此,本领域技术人员应能理解,MGClO对MG21和MG22的指示并无严格的顺序关系,MGClO可以先指示MG21,再指示MG22,反之亦然。 [0143] Here, those skilled in the art should understand, MGClO indication of MG21 and MG 22 is not strict sequential relationship, MGClO MG21 may indicate first, then indicating MG 22, and vice versa.

[0144] MGClO指示MG21的IP终结点14执行会议PAEC的H. 248消息的示例如下: [0144] MGClO indicating an IP endpoint exemplary MG21 14 performs the H. 248 message session PAEC as follows:

[0145] [0145]

Figure CN105100524AD00151

[0146] 其中,Context = 4 表不关联4,Modify = IP Termination4 表不修改IP 终结点4,Media表示媒体参数,LocalControl表示本端控制,Mode = SendReceive表示收发模式, pkt/aec表示H. 248数据包的包名,回声消除指示信息被封装在该数据包中,direction = conf表示执行PAEC的方向为会议,interval = 255表示开启PAEC。 [0146] wherein, Context = 4 is not associated in Table 4, Modify = IP Termination4 table does not change the IP endpoint 4, Media represents media parameters, LocalControl represents local control, Mode = SendReceive represented transceiver mode, pkt / aec represents H. 248 package name data packets, echo cancellation instruction information is encapsulated in the packet, direction = conf indicates the direction for the execution PAEC meeting, interval = 255 indicate on PAEC.

[0147] 从而,MG21根据所接收的回声消除指示信息,确定由其中的IP终结点14来执行会议PAEC,则该IP终结点14据此执行会议PAEC。 [0147] thus, eliminating MG21 indication information based on the received echo, which is determined by the IP endpoint 14 to perform the PAEC session, the IP session termination 14 accordingly performs PAEC.

[0148] 进一步地,本发明在MGC侧执行的操作可由装置于MGC中的控制装置来执行。 [0148] Further, operation of the present invention, the MGC may be performed in the control device apparatus is performed in the MGC. 本发明在MG侧执行的操作可由装置于MG中的消除装置来执行。 In operation of the present invention is performed by means of MG MG side of the apparatus to perform elimination.

[0149] 图10示出根据本发明另一个实施例的装置示意图,其中示出由MGC控制MG来执行PAEC的媒体通信网关系统中MGC和MG的各装置。 [0149] FIG. 10 shows a schematic diagram of apparatus according to another embodiment of the present invention, showing each apparatus performs communication media gateway PAEC system MGC and the MG MG controlled by the MGC.

[0150] 如图10所示,控制装置100装置于MGClO中,控制装置100包括确定装置101和发送装置102 ;消除装置210装置于MG21中,消除装置210包括接收装置211和执行装置212 ;消除装置220装置于MG22中,消除装置220包括接收装置221和执行装置222。 [0150] As shown in FIG. 10, the control means 100 in MGClO, the transmitting apparatus 100 and the apparatus 101 comprises determining 102 a control apparatus; apparatus 210 in the MG21 elimination device, eliminating device 210 comprises receiving means 211 and the actuator 212; Elimination apparatus 220 in MG22, eliminating device 220 comprises receiving means 221 and execution means 222.

[0151] 配合参阅图1示出的媒体网关通信架构,其中,MG21及MG22连接至MGC10,MG21与MG22之间待进行语音数据传输。 [0151] refer to the media gateway with a communication infrastructure shown in FIG. 1, wherein, MG21 and MG 22 is connected to MGC10, voice data transmission to be performed between MG21 and MG22. 需要说明的是,尽管图1中MG21与MG22均连接至MGC10, 这仅用于便于理解及说明本发明之目的,而不应被视为对本发明的任何限制,例如,MG21与MG22同样可分别连接至不同的MGC,并由各自的MGC来控制其PAEC。 Note that, although FIG. 1 MG21 and MG22 are connected to MGC10, this is merely for purposes of illustration and ease of understanding the present invention, and should not be considered as any limitation of the present invention, for example, MG21 and MG22 are equally connected to a different MGC, MGC is controlled by its respective PAEC.

[0152] 进一步地,MG21中的用户终结点Sl与IP终结点Il建立关联3,MG22中的用户终结点S2与IP终结点12建立关联4,从而MG21与MG22中的这两个用户终结点Sl与S2经由各自关联的IP终结点Il与12之间的分组中继来传输语音数据。 [0152] Further, the user endpoints MG21 Sl and associated IP endpoint Il 3, MG22 user endpoints and S2 associated IP endpoint 12 4, MG21 and MG 22 so that two users of endpoints Sl and S2 via a respective associated IP packet relay endpoints between Il and 12 to transmit voice data.

[0153] 仍参阅图10,具体地,MGClO的确定装置101根据MG21与MG22中终结点所支持的回声消除方向,确定对应其中一个或多个MG的回声消除指示信息,以用于指示对应MG中执行PAEC的终结点及其所采用的回声消除方向。 [0153] Still referring to FIG. 10, in particular, MGClO determining apparatus 101 according to the MG21 and MG22 supported in the direction of the endpoint echo cancellation, which is determined corresponding to the one or more echo cancellation MG indication information for indicating a corresponding MG PAEC performed endpoint used and echo cancellation direction.

[0154] 在此,由于MG中各终结点所支持的回声消除方向可能是不同的,例如,有些终结点仅支持单出PAEC,有些终结点支持双向PAEC,因此,当MG21中的用户终结点Sl与MG22 中的用户终结点S2需进行语音数据传输时,确定装置101需根据MG21和MG22中与该语音数据传输有关的终结点所支持的回声消除方向,来确定相应的回声消除指示信息。 [0154] Here, since the MG each endpoint supports echo cancellation directions may be different, e.g., some of the endpoint supports only single out the PAEC, some endpoints support bidirectional the PAEC, therefore, when the MG21 user endpoints when Sl and MG22 user endpoint S2 required for voice data transmission, determination means 101 needs to eliminate the directions from MG21 and MG22 in the voice data transmission related endpoints supported echo, determining the respective echo cancellation instructions.

[0155] 其中,确定装置101所确定的回声消除指示信息可能仅对应MG21与MG22中之一, 也可能与两者均相关。 [0155] wherein the determining means 101 determines the echo cancellation instruction information may correspond to only one of the MG21 and MG22, also may be associated with both.

[0156] 例如,仍参阅图1,MG21中的用户终结点Sl支持单出PAEC,IP终结点Il支持单入PAEC ;MG22中的用户终结点S2支持双向PAEC。 [0156] For example, still referring to FIG 1, MG21 user endpoints Sl support a single PAEC, IP endpoint to support a single-Il PAEC; MG22 user endpoints S2 support bidirectional PAEC.

[0157] 据此,确定装置101可以确定多种PAEC执行方案。 [0157] Accordingly, the determining means 101 may determine various PAEC implementation. 例如,确定装置101可以仅确保在一个通信方向上执行PAEC,如确定装置101指示由MG21中的用户终结点Sl执行PAEC, 并且PAEC方向为单出。 For example, the determining means 101 may be performed to ensure that only one communication direction in PAEC, determining means 101 as indicated by the end user MG21 PAEC point Sl is executed, and the single direction PAEC.

[0158] 优选地,PAEC执行方案可基于实现双向PAEC来确定,即实现双工PAEC,从而生成相应的回声消除指示信息。 [0158] Preferably, PAEC scheme may be determined based on the implementation of bidirectional PAEC, i.e. to achieve a duplexer PAEC, thereby generating a corresponding echo cancellation instructions. 在此,双向是指通信双方相互之间的两个通信方向,例如,由MG21至MG22以及由MG22至MG21这两个方向。 Here, the bidirectional communication refers to a communication direction between the two sides to each other, e.g., to the MG21 and MG22 MG22 to MG21 from the two directions.

[0159] 基于实现双向PAEC来确定回声消除指示信息,可以为通信双方均提供PAEC,提高通信服务质量。 [0159] Based on two-way PAEC to determine the echo cancellation instructions, can provide both sides PAEC communication, improve communication quality service.

[0160] 例如,仍接前例,各种双向PAEC执行方案如下: [0160] For example, still take precedent, various programs executed bidirectional PAEC follows:

[0161] 方案1 :由MG21中的用户终结点S1执行PAEC,并且PAEC方向为单出,以及由MG22 中的用户终结点S2执行PAEC,并且PAEC方向为单出; [0161] Scheme 1: the MG21 user endpoint S1 PAEC performed, and the PAEC single direction, and the user endpoints MG22 performed PAEC S2, and PAEC single-out direction;

[0162] 方案2 :由MG21中的IP终结点Il执行PAEC,并且PAEC方向为单入,以及由MG22 中的用户终结点S2执行PAEC,并且PAEC方向为单入; [0162] Scheme 2: is performed by the IP endpoint MG21 Il PAEC, and PAEC into single direction, and the user endpoints MG22 S2 PAEC performed, and the PAEC single direction;

[0163] 方案3 :由MG21中的用户终结点Sl执行单出PAEC,IP终结点Il执行单入PAEC ; [0163] Scheme 3: MG21 by the user to perform a single endpoint Sl out PAEC, IP endpoint to perform a single into the PAEC Il;

[0164] 方案4 :由MG22中的用户终结点S2执行PAEC,并且PAEC方向为双向。 [0164] Scheme 4: the MG22 user performs endpoint PAEC S2, and the direction is bidirectional PAEC.

[0165] 确定装置101可以基于各种选择规则来从上述方案中选择拟由MG21和/或MG22 执行的PAEC方案。 [0165] determining means 101 may select the programs executed by the quasi PAEC MG21 and / or MG22 from the above-described embodiment based on various selection rules. 其中,确定装置101所采用的选择规则可由具体应用场景来确定。 Wherein the selection rule determining means 101 may be employed to determine the specific application scenario.

[0166] 需要说明的是,本领域技术人员应能理解,对PAEC的执行需做广义理解,即其不仅包括终结点对其PAEC功能的开启,也包括终结点对其PAEC功能的关闭。 [0166] It should be noted that those skilled in the art will appreciate that the implementation of the PAEC need to do a broad understanding that it includes not only the end point of open PAEC its functions, including its endpoints closed PAEC function. 例如,在确定装置101确定回声消除指示信息之前,某(些)终结点的PAEC功能是开启的,但根据所确定的PAEC执行方案,其中部分终结点将不再执行PAEC功能,例如,在向三方通话过渡时,确定来执行PAEC的终结点可能会发生变化,因此,确定装置101需向其中不再执行PAEC的终结点所属的MG发送相应的回声消除指示信息,以使得该(等)终结点关闭其PAEC功能。 For example, before determining means 101 determines the echo canceller indication information, a PAEC function (s) of the endpoint is on, but the implementation of the program according to PAEC identified, some of which no longer performs endpoint will PAEC functions, e.g., in the when the three-way calling transition determination performed PAEC endpoints may vary, thus determining means 101 is no longer required to perform a corresponding echo wherein MG transmission PAEC endpoint belongs cancellation indication information, so that the (other) end PAEC closes its function.

[0167] 优选地,回声消除指示信息还用于指示执行PAEC的终结点执行PAEC的时间间隔。 [0167] Preferably, the echo canceller is also used to indicate information indicative of termination of execution PAEC PAEC execution interval.

[0168] 例如,回声消除指示信息可以指示MG21中的用户终结点Sl执行PAEC,回声消除方向为单出,时间间隔为120秒。 [0168] For example, echo cancellation information indicating the user may indicate that the endpoint MG21 Sl perform the PAEC, a single echo cancellation direction, the time interval is 120 seconds.

[0169] 可选的时间间隔可以为一个区间,例如1秒至254秒。 [0169] Optionally the interval may be a range, for example from 1 to 254 seconds.

[0170] 此外,还可用时间间隔255表示开启PAEC,用时间间隔0表示关闭PAEC。 [0170] In addition, time interval 255 may be opened by PAEC, PAEC 0 represents off by time interval.

[0171] 随后,MGClO的发送装置102将所确定的回声消除指示信息发送至对应MG ;相应地,对应MG中的接收装置自MGClO接收该回声消除指示信息。 [0171] Subsequently, the transmitting device 102 MGClO the determined indication information to the echo canceller corresponding to the MG; Accordingly, the receiving apparatus corresponding to the MG receives from the echo canceller MGClO indication information.

[0172] 具体如,对于相互之间待进行语音数据传输的多个MG,确定装置101可以确定仅对应其中一个MG的回声消除指示信息,则发送装置102仅向该MG发送该回声消除指示信息;或者,确定装置101确定对应其中至少两个MG的回声消除指示信息,则发送装置102分别向这至少两个MG发送其各自对应的回声消除指示信息,即将对应于其中每个MG的回声消除指示信息分别发送至各相应MG。 [0172] In particular, for a plurality of mutually MG voice data to be transmitted, determining means 101 may determine that only one of which corresponds to a MG echo cancellation instruction information, the transmitting apparatus 102 transmits only the echo elimination indication information to the MG ; or wherein the determining means 101 determines that the corresponding at least two MG echo cancellation instruction information transmitting apparatus 102 are transmitted each correspond to the echo cancellation information indicating that the at least two MG, MG upcoming corresponding to each of the echo cancellation instructions are transmitted to each of the corresponding MG.

[0173] 例如,仍接续上述参阅图1的举例,MGClO的确定装置101确定采用上述方案1,并生成相应的回声消除指示信息,即分别生成针对MG21中的用户终结点Sl的PAEC指示以及针对MG22中的用户终结点S2的PAEC指示,发送装置102将对MG21中的用户终结点Sl的回声消除指示信息发送给MG21,将对MG22中的用户终结点S2的回声消除指示信息发送给MG22,MG21的接收装置211相应接收对该对用户终结点Sl的回声消除指示信息,MG22的接收装置221相应接收对该对用户终结点S2的回声消除指示信息。 [0173] For example, still follow the above refer to FIG example 1, MGClO determining means 101 determines that the above-described embodiment 1, and generate a corresponding echo cancellation information indicating that generates PAEC indication for the user endpoints MG21 of Sl and for PAEC user termination point S2 indicative of the MG 22, the transmission device 102 will MG21 user endpoints in the Sl echo echo cancellation instruction information to MG21, MG 22 will S2 user endpoints send indication information to eliminate the MG 22, MG21 receiving apparatus 211 receives the respective user termination point Sl echo cancellation instructions, MG22 receiving apparatus 221 receives the respective user termination point S2 echo cancellation instructions.

[0174] 或者,又如,MGClO的确定装置101确定采用上述方案4,并生成相应的回声消除指示信息,则该回声消除指示信息中仅包括对MG22中的用户终结点S2的PAEC指示,MGClO 的发送装置102仅将该回声消除指示信息发送至MG22,以指示其用户终结点S2执行双向PAEC,相应地,MG22的接收装置221接收该回声消除指示信息。 [0174] Alternatively, another example, MGClO determining means 101 determines that the above-described embodiment 4, the echo canceller and generate a corresponding indication information, the echo canceller PAEC instruction information includes only the user of the endpoint MG22 and S2, MGClO transmitting means 102 to eliminate the echo only indication information to the MG22, to indicate that the user performs bidirectional termination S2 PAEC, accordingly, MG22 receiving means 221 receives the echo canceller indication information.

[0175] 优选地,发送装置102可以将回声消除指示信息包含在H. 248消息中来发送至MG。 [0175] Preferably, the transmission device 102 may be included in the echo canceller indication information transmitted in the H. 248 message to the MG.

[0176] 例如,发送装置102可将回声消除指示信息封装在H. 248数据包中,并通过H. 248 消息发送至相应的MG。 [0176] For example, the transmission device 102 may eliminate echo indication information encapsulated in the packet H. 248, and sent to the MG by the corresponding H. 248 message.

[0177] 在此,H. 248数据包格式例如可以如下: . [0177] Here, H 248, for example, data packet format may be as follows:

[0178] 包名: [0178] Package name:

[0179] pkt/ec [0179] pkt / ec

[0180] 可应用的终结点: [0180] applicable endpoints:

[0181] IP终结点、用户终结点以及会议设施/终结点 [0181] IP endpoint, the user endpoint and meeting facilities / endpoint

[0182] 包参数: [0182] Package parameters:

[0183] 方向=单入(in/incoming)、单出(out/outgoing)、双向(bi-directional)或会议(conference) [0183] = singlet the direction (in / incoming), the mono (out / outgoing), two-way (bi-directional) or meeting (Conference)

[0184] 时间间隔=0 (关闭)、1-254 (秒)、255 (开启) [0184] Interval = 0 (off), 1-254 (seconds), 255 (open)

[0185] 对于接收到回声消除指示信息的MG,其中的执行装置根据其接收装置所接收的回声消除指示信息,确定该MG中执行PAEC的终结点及其所采用的回声消除方向,以由所指示的终结点按照相应回声消除方向来执行PAEC。 [0185] For the MG receives the echo canceller indication information, wherein the execution means eliminating means which receives instruction information received echo, and to determine the endpoint PAEC echo canceller employed in this direction MG performed, the order by the endpoint, as appropriate for indicating a direction to perform echo cancellation PAEC.

[0186] 例如,仍接续上述参阅图1的举例,MGClO的确定装置101基于上述PAEC执行方案1,确定相应的回声消除指示信息,即分别确定对MG21中的用户终结点Sl的PAEC指示以及MG22中的用户终结点S2的PAEC指示;MGClO的发送装置102将对MG21中的用户终结点Sl 的回声消除指示信息发送给MG21,将对MG22中的用户终结点S2的回声消除指示信息发送给MG22 ;相应地,MG21中的接收装置211和MG22中的接收装置221分别接收发送至各自的回声消除指示信息;MG21中的执行装置212根据其所接收的回声消除指示信息确定其中执行PAEC的终结点为用户终结点S1,回声消除方向为单出,MG22中的执行装置222根据其所接收的回声消除指示信息确定其中执行PAEC的终结点为用户终结点S2,回声消除方向为单出,从而MG21和MG22中各自的用户终结点Sl和S2执行单出PAEC。 [0186] For example, still follow the above refer to FIG example 1, MGClO determination means 101 based on the PAEC performed in Scheme 1, to determine the appropriate echo cancellation instruction information, i.e. determine PAEC indication of MG21 user endpoints Sl and MG22 the user indicates the end point S2 PAEC; a user of the endpoint 102 will MG21 MGClO Sl transmission device transmits instruction information to the echo canceller MG21, MG22 user will end point S2 echo cancellation instruction information to MG22 ; accordingly, the receiving apparatus 211 MG21 and reception apparatus 221 MG22 respectively transmitted to the respective receiving echo cancellation indication information; MG21 execution means 212 determines the endpoint which PAEC performed according to its received instructions echo cancellation user termination point Sl, an echo canceller is a single direction, the execution means 222 determines MG22 wherein performing endpoint for the user endpoints PAEC S2, the echo canceller according to a single direction as it receives the echo cancellation instruction information, thereby MG21 MG22 and a respective user endpoints Sl and S2 perform single out PAEC.

[0187] 进一步地,回声消除指示信息还可以指示执行PAEC的终结点执行PAEC的时间间隔。 [0187] Further, the echo canceller may further indication information indicating execution of the execution termination PAEC PAEC interval.

[0188] 例如,接上例,MGClO还在发送至MG21的回声消除指示信息中进一步指示MG21的用户终结点Sl执行PAEC的时间间隔为120秒,并在发送至MG22的回声消除指示信息中也做同样指示,从而MG21和MG22中各自的用户终结点Sl和S2均按照时间间隔120S来执行单出PAEC。 [0188] For example, connected cases, MGClO MG21 also sent to the echo cancellation instruction information further indicates MG21 user endpoint Sl PAEC execution interval is 120 seconds, and to eliminate the echo in the transmission instruction information to the MG22 also do the same instructions, MG21 and MG22 whereby the respective user endpoints Sl and S2 are performed in time intervals 120S single-out PAEC.

[0189] 需要注意的是,本发明可在软件和/或软件与硬件的组合体中被实施,例如,可采用专用集成电路(ASIC)、通用目的计算机或任何其他类似硬件设备来实现。 [0189] It should be noted that the present invention may be implemented in a combination of software and / or software and hardware, for example, may be employed ASIC (ASIC), a general purpose computer or any other similar hardware implemented.

[0190] 本发明的软件程序可以通过处理器执行以实现上文所述步骤或功能。 [0190] The software program of the present invention may be performed to implement the above steps or functions by a processor. 同样地,本发明的软件程序(包括相关的数据结构)可以被存储到计算机可读记录介质中,例如,RAM 存储器,磁或光驱动器或软磁盘及类似设备。 Similarly, the software program of the present invention (including associated data structures) may be stored in a computer-readable recording medium, eg, RAM memory, magnetic or optical drive or a floppy disk and the like. 另外,本发明的一些步骤或功能可采用硬件来实现,例如,作为与处理器配合从而执行各个功能或步骤的电路。 Further, some steps or functions of the present invention may be implemented in hardware, e.g., as a processor with circuitry to perform various functions or steps.

[0191] 另外,本发明的一部分可被应用为计算机程序产品,例如计算机程序指令,当其被计算机执行时,通过该计算机的操作,可以调用或提供根据本发明的方法和/或技术方案。 [0191] Further, part of the present invention may be applied as a computer program product, such as computer program instructions which, when executed by a computer, by operating the computer may be invoked or provided and / or the technical solution according to the method of the present invention. 而调用本发明的方法的程序指令,可能被存储在固定的或可移动的记录介质中,和/或通过广播或其他信号承载媒体中的数据流而被传输,和/或被存储在根据所述程序指令运行的计算机设备的工作存储器中。 Invoking the inventive methods and program instructions, may be stored in fixed or removable recording medium, and / or be transmitted by a data broadcast or other signal bearing medium stream and / or stored in accordance with the the working memory of a computer device running said program instructions. 在此,根据本发明的一个实施例,其包括一个装置,该装置包括用于存储计算机程序指令的存储器和用于执行程序指令的处理器,其中,当该计算机程序指令被该处理器执行时,触发该装置运行基于前述根据本发明的多个实施例的方法和/或技术方案。 Here, according to one embodiment of the present invention, which includes a means, the apparatus comprising a memory for storing computer program instructions and a processor for executing program instructions, wherein, when the computer program instructions are executed by the processor triggering operation of the apparatus of the preceding embodiments in accordance with the method of the present invention based and / or technical solutions.

[0192] 对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。 In the case [0192] to those skilled in the art, that the invention is not limited to the details of the above-described exemplary embodiment, but without departing from the spirit or essential characteristics of the present invention, the present invention can be realized in other specific forms. 因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本发明内。 Therefore, no matter from what point of view, the embodiments should be considered exemplary, and not limiting, the scope of the invention being indicated by the appended claims rather than by the foregoing description, the appended claims are therefore intended to All changes which come within the meaning and range of equivalents thereof should be covered within the present invention. 不应将权利要求中的任何附图标记视为限制所涉及的权利要求。 In the claims should not be considered as any reference numerals as claimed in claim limitations involved. 此外,显然"包括" 一词不排除其他单元或步骤,单数不排除复数。 In addition, apparently "comprising" does not exclude other elements or steps, the singular does not exclude a plurality. 系统权利要求中陈述的多个单元或装置也可以由一个单元或装置通过软件或者硬件来实现。 A plurality of units or means recited in the claims the system can also be implemented by a single unit or through software or hardware. 第一,第二等词语用来表示名称,而并不表示任何特定的顺序。 The first, second, etc. are used to indicate the name, but does not indicate any particular sequence.

Claims (15)

  1. 1. 一种基于分组的声学回声消除的方法,其中,一个媒体网关控制设备连接一个或多个媒体网关设备,其中,该方法包括: -根据相互之间待进行语音数据传输的媒体网关设备中终结点所支持的回声消除方向,确定对应其中一个或多个媒体网关设备的回声消除指示信息,以用于指示对应媒体网关设备中执行基于分组的声学回声消除的终结点及其所采用的回声消除方向; -将所确定的回声消除指示信息发送至对应媒体网关设备。 1. A method of acoustic echo cancellation on the packet, wherein a media gateway control device connected to one or more media gateway device, wherein the method comprises: - a media gateway device to be performed between each transmission of voice data according to the the endpoints supported echo cancellation directions, wherein the one or more determining a corresponding media gateway device echo cancellation indication information for indicating the corresponding media gateway apparatus performs a packet-based acoustic echo cancellation and echo endpoints employed elimination direction; - the echo canceller indicative of the determined information to the corresponding media gateway device.
  2. 2. 根据权利要求1所述的方法,其中,所述相互之间待进行语音数据传输的媒体网关设备与不同媒体网关控制设备连接; 其中,所述确定所述回声消除指示信息的步骤进一步包括: -与其中的其他媒体网关控制设备协商来确定对应其中一个或多个媒体网关设备的所述回声消除指示信息。 The method according to claim 1, wherein, between the media gateway device to be subjected to another transmission of voice data with different media gateway control device is connected; wherein the step of determining the echo canceller indication information further comprises : - determining a corresponding one or more of the media gateway device echo cancellation information indicating where other media gateway control device negotiation.
  3. 3. 根据权利要求1或2所述的方法,其中,所述回声消除指示信息基于实现双向基于分组的声学回声消除来确定。 3. The method of claim 1 or claim 2, wherein said echo cancellation indication information is determined based on two-way packet-based acoustic echo cancellation.
  4. 4. 根据权利要求1至3中任一项所述的方法,其中,所述回声消除指示信息还用于指示所述执行基于分组的声学回声消除的终结点执行基于分组的声学回声消除的时间间隔。 4. The method according to claim 3, wherein said echo canceller further indication information for instructing the execution termination perform acoustic echo cancellation packet based on the packet-based acoustic echo cancellation time interval.
  5. 5. 根据权利要求1至4中任一项所述的方法,其中,所述发送所确定的回声消除指示信息的步骤进一步包括: -将所述回声消除指示信息包含在a 248消息中来发送至对应媒体网关设备。 5. The method according to any one of any one of claims 1 to 4, wherein said echo canceller transmits the determined indication information further comprises: - the echo canceller to transmit the instruction information contained in the message, a 248 to the corresponding media gateway device.
  6. 6. -种基于分组的声学回声消除方法,其中,一个媒体网关设备包括多个终结点,其中,该方法包括: -自媒体网关控制设备接收回声消除指示信息; _根据所述回声消除指示信息,确定执行基于分组的声学回声消除的终结点及其所采用的回声消除方向,以由所指示的终结点按照所述回声消除方向来执行基于分组的声学回声消除。 6. - kind of packet-based acoustic echo cancellation method, wherein a media gateway device comprises a plurality of endpoints, wherein the method comprises: - receiving from the media gateway control apparatus information indicating echo cancellation; _ echo elimination according to the indication information , determines to perform packet-based acoustic echo cancellation and the echo canceller direction endpoint used to eliminate the termination according to the indicated direction to perform packet-based echo acoustic echo cancellation.
  7. 7. 根据权利要求6所述的方法,其中,所述回声消除指示信息还用于指示所述执行基于分组的声学回声消除的终结点执行基于分组的声学回声消除的时间间隔。 The method according to claim 6, wherein said echo canceller further indication information for instructing the execution termination of performing acoustic echo cancellation of a packet-based packet-based acoustic echo canceller interval.
  8. 8. -种在媒体网关控制设备中基于分组的声学回声消除的装置,其中,一个媒体网关控制设备连接一个或多个媒体网关设备,其中,该装置包括: 确定装置,用于根据相互之间待进行语音数据传输的媒体网关设备中终结点所支持的回声消除方向,确定对应其中一个或多个媒体网关设备的回声消除指示信息,以用于指示对应媒体网关设备中执行基于分组的声学回声消除的终结点及其所采用的回声消除方向; 发送装置,用于将所确定的回声消除指示信息发送至对应媒体网关设备。 8. - Device species apparatus based acoustic echo cancellation packet media gateway control, wherein a media gateway control device connected to one or more media gateway device, wherein, the apparatus comprising: determining means for mutually the media gateway device to be voice data transmission endpoints supported echo cancellation directions, wherein the one or more determining a corresponding media gateway device echo cancellation indication information for indicating a corresponding media gateway device performing packet-based acoustic echo echo cancellation and termination used to eliminate direction; transmitting means for indicating the determined echo cancellation information to the corresponding media gateway device.
  9. 9. 根据权利要求8所述的装置,其中,所述相互之间待进行语音数据传输的媒体网关设备与不同媒体网关控制设备连接; 其中,所述确定装置所执行的所述确定所述回声消除指示信息的操作进一步包括: -与其中的其他媒体网关控制设备协商来确定对应其中一个或多个媒体网关设备的所述回声消除指示信息。 9. The apparatus according to claim 8, wherein each said media gateway device to be performed between the transmission of voice data with a different apparatus connected to a media gateway control; wherein said determining means performs said determining the echo elimination instruction information operations further comprise: - determining a corresponding one or more of the media gateway device echo cancellation information indicating where other media gateway control device negotiation.
  10. 10. 根据权利要求8或9所述的装置,其中,所述回声消除指示信息基于实现双向基于分组的声学回声消除来确定。 10. The apparatus of claim 8 or claim 9, wherein said echo cancellation indication information is determined based on two-way packet-based acoustic echo cancellation.
  11. 11. 根据权利要求8至10中任一项所述的装置,其中,所述回声消除指示信息还用于指示所述执行基于分组的声学回声消除的终结点执行基于分组的声学回声消除的时间间隔。 11. The device 8-1 according to any of claim 10, wherein said echo canceller further indication information for instructing the execution termination perform acoustic echo cancellation packet based on the packet-based acoustic echo cancellation time interval.
  12. 12. 根据权利要求8至11中任一项所述的装置,其中,所述发送装置进一步用于: -将所述回声消除指示信息包含在a 248消息中来发送至对应媒体网关设备。 12. A device according to any one of claims 8 to 11, wherein said transmitting means is further for: - the echo canceller indication information comprises transmitting to a corresponding media gateway device in a 248 message.
  13. 13. -种在媒体网关设备中基于分组的声学回声消除装置,其中,一个媒体网关设备包括多个终结点,其中,该装置包括: 接收装置,用于自媒体网关控制设备接收回声消除指示信息; 执行装置,用于根据所述回声消除指示信息,确定执行基于分组的声学回声消除的终结点及其所采用的回声消除方向,以由所指示的终结点按照所述回声消除方向来执行基于分组的声学回声消除。 13. - kind of media gateway device in the acoustic echo canceling means based on a packet, wherein a media gateway device comprises a plurality of endpoints, wherein, the apparatus comprising: receiving means for receiving from the media gateway control apparatus information indicating the echo cancellation ; execution means for echo cancellation according to the indication information, determines to perform packet-based acoustic echo cancellation and the echo canceller direction endpoint used to eliminate the termination according to the indicated direction is performed based on the echo eliminate acoustic echo packets.
  14. 14. 根据权利要求13所述的装置,其中,所述回声消除指示信息还用于指示所述执行基于分组的声学回声消除的终结点执行基于分组的声学回声消除的时间间隔。 14. The apparatus according to claim 13, wherein said echo canceller further indication information used for indicating termination of the packet is performed based on the acoustic echo cancellation is performed based on the acoustic echo cancellation of a packet interval.
  15. 15. -种基于分组的声学回声消除方法,其中,一个媒体网关控制设备连接一个或多个媒体网关设备,一个媒体网关设备包括多个终结点,其中,该方法包括: _媒体网关控制设备根据相互之间待进行语音数据传输的媒体网关设备中终结点所支持的回声消除方向,确定对应其中一个或多个媒体网关设备的回声消除指示信息,以用于指示对应媒体网关设备中执行基于分组的声学回声消除的终结点及其所采用的回声消除方向; -媒体网关控制设备将所述回声消除指示信息发送至对应媒体网关设备; -相应媒体网关设备根据所接收的回声消除指示信息,确定其中执行基于分组的声学回声消除的终结点以及相应终结点所采用的回声消除方向,以由所指示的终结点按照相应回声消除方向来执行基于分组的声学回声消除。 15. - kind of packet-based acoustic echo cancellation method, wherein a media gateway control device connected to one or more media gateway, a media gateway device comprises a plurality of endpoints, wherein the method comprises: _ The Media Gateway Control Apparatus the media gateway device to be voice data transmission between each other endpoints supported in echo cancellation directions, wherein the one or more determining a corresponding media gateway device echo cancellation indication information for indicating the corresponding media gateway apparatus performs a packet-based acoustic echo cancellation and termination used in echo cancellation direction; - a media gateway control device, the echo canceller transmits indication information to a corresponding media gateway device; - a corresponding media gateway device according to the received echo cancellation indication information, determining wherein performing the packet-based echo acoustic echo cancellation and the corresponding endpoints endpoint used to eliminate direction to the endpoint from the indicated direction at a corresponding echo cancellation performs packet-based acoustic echo canceller.
CN 201410208746 2014-05-16 2014-05-16 Packet-based acoustic echo cancellation method and device CN105100524A (en)

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