WO2009127155A1

WO2009127155A1 - Method for realizing local exchange, device and system thereof

Info

Publication number: WO2009127155A1
Application number: PCT/CN2009/071320
Authority: WO
Inventors: 熊苏学; 邓哲
Original assignee: 华为技术有限公司
Priority date: 2008-04-16
Filing date: 2009-04-16
Publication date: 2009-10-22
Also published as: CN101272626B; CN101272626A

Abstract

A method for realizing local exchange is disclosed in the embodiment of the present invention, which belongs to network telecommunication field. The method includes: performing a call establishment under the condition of detecting that a calling user and a called user meet local exchange; establishing a network worksheet used for storing identification information of the calling user and the called user; after receiving a voice stream, replacing the user identification information of the voice stream according to the network worksheet. The embodiment of the present invention also provides a device and a system for realizing local exchange. The method, the device and the system can reduce the data transmission quantity in a network.

Description

Method, device and system for realizing local exchange

[I] This application claims priority to Chinese Patent Application No. 200810104219.0, entitled "Method, Apparatus and System for Realizing Local Exchange", filed on April 16, 2008, the entire contents of which are incorporated by reference. Combined in this application.

[2] Technical field

[3] The present invention relates to the field of network communications, and in particular, to a method, device, and system for implementing local switching.

[4] Background of the invention

[5] The network element and circuit occupancy of a modern communication network in a normal call process is shown in Figure 1. The dotted line in Figure 1 indicates the voice occupied line, and the two dotted lines indicate the exchange. Figure 1 includes: Mobile Station (Mobile Station, MS), base transceiver station (Base Transceiver)

Station, BTS) , Base Station Controller (Base Station

Controller, BSC), Transcoder (TC), Core Network (Core

Network, CN). The TC is generally placed in the core network room, and long-distance transmission is generally used between the BSC and the TC.

[6] The normal call process provided by the prior art includes: the calling user initiates a call setup request to the BSC, and after the BSC performs control signaling interaction with the CN, the CN pages the called user, and the called user

Establish a call after establishing a signaling interaction; the calling user and the called user perform voice data interaction.

[7] In the process of implementing the present invention, the inventors found that the method described in the prior art has the following problems:

[8] With the development of technology, GSM packetization has become a trend. In the above call process, the called user and the calling user may both be in the same BSC area, that is, the coverage area. Of course, in the actual situation, the same BTS area, that is, the coverage area, may be in the coverage area. After data exchange with the called user, the BSC/BTS cannot perform local exchange, thereby increasing the amount of data transmission between the BSC and the CN and between the BTS and the BSC.

[9] Summary of the invention

[10] Embodiments of the present invention provide a method, apparatus, and system for implementing local switching.

[II] An embodiment of the present invention provides a method for implementing local switching, where the method includes: [12] Performing call establishment under the condition that the calling user and the called user satisfy the local exchange, and establishing a correspondence between the identification information of the calling user and the identification information of the called user;

[13] After receiving the voice stream, the user identification information of the voice stream is replaced according to the correspondence.

[14] An embodiment of the present invention further provides an apparatus for implementing local switching, where the apparatus includes:

[15] a receiving module, configured to receive a call setup request message and a voice stream;

[16] a detecting module, configured to detect, after the receiving module receives the call setup request message, whether the calling user and the called user meet the condition of local exchange;

[17] a calling module, configured to perform call setup under the condition that the detecting module detects that the local exchange is satisfied

[18] an establishing module, configured to establish a correspondence between the identification information of the calling user and the identification information of the called user after the call module establishes the call;

[19] a replacement module, configured to replace, after the receiving module receives the voice stream, the user identification information of the voice stream according to the corresponding relationship established by the establishing module.

[20] The embodiment of the present invention further provides a system for implementing local switching, including a base station device, where

[21] The base station device is configured to receive a call request message from the terminal, and if it is detected that the calling user and the called user meet the conditions of the local exchange, perform call setup; establish identification information of the calling user and identify the called user. Corresponding relationship of information; after receiving the voice stream, replacing the user identification information of the voice stream according to the correspondence.

[22] The technical solution of the embodiment of the present invention stores the identification information of the calling user and the called user by establishing a network work table, and replaces the calling user and the called party according to the network work table if the local exchange condition is met. The user's identification information, thereby realizing local exchange under the packet technology, reducing the amount of data transmission between the base station device and the core network, and saving resources.

[23] BRIEF DESCRIPTION OF THE DRAWINGS

[24] FIG. 1 is a diagram showing the occupation of network elements and circuits in a normal call process in the prior art;

2 is a flowchart of a method for implementing local exchange according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for implementing local exchange according to an embodiment of the present invention; FIG.

FIG. 4 is a schematic structural diagram of an apparatus for implementing local exchange according to an embodiment of the present invention; FIG.

FIG. 5 is a schematic structural diagram of implementing a local switching system according to an embodiment of the present invention. [29] Mode for carrying out the invention

The embodiment of the present invention provides a method for implementing local switching, which may be implemented by a BSC or a BTS. In the embodiment of the present invention, packet switching (Packet Switched,

PS) In the domain service, mobile users communicate with each other, and both sides of the communication are in the same BSC or BTS range. The BSC or BTS controls the interaction data of the communication parties through a certain algorithm without passing through the core network, by BSC or BTS. Complete local exchange.

[31] This method is shown in Figure 2 and includes the following steps:

[32] Step 21. Receive a call setup request message.

[33] The call setup request message can be sent by the calling subscriber (i.e., the terminal). The setup request message can be received by the BSC or BTS.

[34] After performing step 21, the following operations may also be performed to receive an indication message for initiating a local exchange; wherein the indication message for initiating the local exchange may be sent by a Mobile Switching Center (MSC).

[35] Step 22. Detect whether the calling user and the called user meet the conditions of local exchange; if the steps are met

23, if not satisfied, the operation ends.

[36] The step 22 may be performed by the base station device, and the specific manner may be: the base station device detects whether the calling user and the called user are within the same base station device, and if they are within the same base station device, It is detected that the calling user and the called user satisfy the condition of local exchange, otherwise the condition of local exchange is not satisfied. The base station device can be a BSC or a BTS.

[37] Step 23. Make a call setup.

[38] Step 24. Establish a network worksheet for storing identification information of the calling user and the called user.

[39] This identification information is based on advanced data link control (High level Data Link)

Control, HDLC) In the case of the transmission method, the carrier frequency identification information is preferentially selected (TRX)

Index) and user identification information (User Identity, User ID).

[40] Based on network protocol (Internet)

Protocol, IP) In the case of the transmission method, the IP address and the user datagram protocol are preferentially selected (User

Datagram Protocol, UDP) The port number is used as the identification information.

[41] Based on Asynchronous Transmission Mode (ATM Asynchronous Transmission) Mode) In the case of the transmission method, the virtual channel identifier (Virtual Path Identifier/Virtual Channel Identifier, VPI/VCl) and the channel identifier (Channel) are preferentially selected.

Identifier, CID) as identification information.

[42] The above identification information is only the identification information that is preferentially selected, and the identification information described in the embodiment of the present invention does not limit the manner of the above identification information.

[43] Step 25. After receiving the voice stream, replace the user identification information of the voice stream according to the network work table.

[44] This step can be completed by the BSC or the BTS. The following uses the BSC as an example to illustrate the preferred implementation of this step.

[45] Case A: After the BSC receives the voice stream, in the case that the voice stream is sent by the calling user, the BS C searches for the identification information of the called user according to the network work table, and the user of the voice stream is used. The identification information is replaced with the identification information of the called user. The user identification information of the voice stream is the identification information of the calling user before the replacement is performed.

[46] Case B: After the BSC receives the voice stream, if the voice stream is sent by the called user, the BS C queries the identification information of the calling user according to the network work table, and replaces the user identification information with Identification information of the calling user. The user identification information that has not been replaced is the identification information of the called user.

[47] The above steps 21 to 25 can all be completed by BSC or BTS.

[48] In addition to establishing a network worksheet mode, the correspondence between the identification information between the calling user and the called user can be realized by other data structure methods such as pointers, indexes, and the like.

[49] Optionally, after step 25, the method further includes: sending the replaced voice stream to the peer user, that is, sending the voice stream of the calling user to the called user and/or the voice of the called user. The stream is sent to the calling user.

[50] Optionally, there is no order limitation between the execution of step 23 and step 24, and it may also be after step 24 is performed.

, then go to step 23.

[51] For a better description of the method according to the embodiment of the present invention, an embodiment of the present invention will be described with reference to the accompanying drawings and specific application scenarios:

[52] The method for implementing the local exchange provided by the embodiment is described by using the BSC as an example. As shown in FIG. 3, the transmission mode in this embodiment is an HDLC transmission mode, and the user identification information is TRX Index and User.

ID, carrying user identification information on the HDLC frame can be implemented by the following method, and is added to the HDLC frame header. Force TRX Index and User ID; This method includes the following operations:

[53] Step 31: The BSC receives the setup call request message sent by the calling user.

[54] Step 32: After forwarding the call setup request message to the MSC, the BSC receives an indication message for initiating local exchange sent by the MSC.

[55] Step 33: The BSC detects whether the calling user and the called user are in the same BSC area, and then steps are performed.

34, otherwise the operation ends;

[56] Step 34: The BSC performs call setup;

[57] Step 35: The BSC establishes a network work table, where the network work table is used to store the TRX Index and the User ID of the calling user and the called user;

[58] Step 36: After receiving the voice stream, the BSC replaces the TRX Index and the User ID of the voice stream according to the network work table.

[59] It is not difficult to understand the TRX Index and User of the voice stream in step 36 above.

The specific method for replacing the ID may be: when the voice stream is sent to the calling user, the TRX

Replace Index and User ID with the TRX Index and User of the called user.

ID, when the voice stream is sent to the called user, the TRX Index and User

The ID is replaced with the TRX Index and User ID of the calling user.

[60] The method of implementing this step 36 has been explained in the above case A and case B, and will not be mentioned here.

[61] If the above method is based on ATM or IP transmission, it is only necessary to modify the identification information of the calling user and the called user to the user identification information corresponding to the transmission mode. The above method can also be completed by the BTS, and the method is completed by the BTS, in addition to reducing the amount of data transmission between the BSC and the core network, and also reducing the amount of data transmission between the _BTS and the _BSC , thereby achieving better savings. The purpose of network resources.

[62] The method provided by the embodiment of the present invention stores the identification information of the calling user and the called user by establishing a network work table, and replaces the calling user and the called party according to the network work table if the local exchange condition is met. The user's identification information, thereby realizing local exchange under the packet technology, reducing the amount of data transmission between the base station device and the core network.

An embodiment of the present invention further provides a device for implementing local switching. As shown in FIG. 4, the method includes: a receiving module 41, configured to receive a call setup request message and a voice stream; and a detecting module 42, configured to receive the After receiving the call setup request message, the module 41 detects whether the calling user and the called user meet the local exchange. The calling module _{43 is} configured to perform call setup if the detecting module 42 detects that the condition of the local exchange is met; and the establishing module 44 is configured to establish a calling after the call module 43 performs call setup. Corresponding relationship between the identification information of the user and the identification information of the called user; the specific method of the correspondence relationship may be: establishing a network work table, where the network work table is used for storing identification information of the calling user and the called user; The specific method may further be: implementing a correspondence between the identification information between the calling user and the called user by using a pointer, an index, etc.; the replacing module 45, configured to: after the receiving module 41 receives the voice stream, according to the establishing module 44 The established network worksheet replaces the user identification information of the voice stream. The specific operation of the above replacement may be: when the voice stream is sent to the calling user, the user identification information of the voice stream is replaced with the identification information of the called user, and when the voice stream is sent by the called user, the user of the voice stream is identified. The information is replaced with the identification information of the calling user. The receiving module 41 in the foregoing apparatus may be further configured to receive an indication message for initiating a local exchange. The condition that the calling user and the called user meet the local exchange may be, whether the calling user and the called user are under the same base station device. The base station device may be a base station controller or a base transceiver station. The identification information in the device is explicitly described in the method embodiment of the present invention, and is not described here. The means for realizing the local exchange may be a base station controller or a base transceiver station. Under the same base transceiver station, the device that implements local exchange may be a base transceiver station. For example, under the same base station controller, the device that implements local exchange may be a base station controller.

[64] The replacement module 45 in the above apparatus may include: an identification submodule 451, configured to identify a sending end of the voice stream; and an interchange submodule 452, configured to determine the voice stream by the identifying submodule 451 The sending end is a calling user, and the identification information of the called user is queried according to the network work table, and the user identification information of the voice stream is replaced with the identification information of the called user; Determining that the sending end of the voice stream is the called user, querying the identification information of the calling user according to the network work table, and replacing the user identification information of the voice stream with the identification information of the calling user.

An embodiment of the present invention provides a device for implementing local exchange. After the detection module 42 detects that the local exchange condition is met, the establishment module 43 establishes a network work table to store the identification information of the calling user and the called user, and then replaces The module 45 replaces the identification information of the calling user and the called user according to the network work table, that is, the local exchange under the packet technology is realized, and the data transmission amount between the base station device and the core network is reduced. [66] An embodiment of the present invention further provides a system for implementing local switching, where the system includes a base station device, where the base station device communicates with a terminal, where the base station device is configured to receive a call request from the terminal, as shown in FIG. The message, if it is detected that the calling user and the called user meet the conditions of the local exchange, perform call establishment; establish a network work table, the network work table is used for storing identification information of the calling user and the called user; and receiving the voice stream After that, the user identification information of the voice stream is replaced according to the network worksheet. In summary, the technical solution provided by the embodiment of the present invention has the advantages of improving the switching efficiency.

[67] The above-mentioned correspondence between the establishment of the identification information of the calling user and the called user by establishing the network work table is only a kind of establishing a correspondence relationship. In actual situations, the calling user and the calling user can also be implemented by using a pointer, an index, and the like. Correspondence between identification information between called users.

The term "receiving" in the embodiment of the present invention may be understood as being actively obtained from other modules or receiving information transmitted by other modules.

A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred embodiment, and the modules or processes in the drawings are not necessarily required to implement the invention.

Those skilled in the art can understand that the modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment, or may be correspondingly changed in one or more apparatuses different from the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into multiple submodules.

[71] The foregoing serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

[72] The solution described in the content of the claims is also the scope of protection of the embodiments of the present invention.

[73] One of ordinary skill in the art will appreciate that all or part of the processing in the above-described embodiments may be accomplished by a program that instructs related hardware, which may be stored in a computer readable storage medium.

[74] The storage medium mentioned above may be a read only memory, a magnetic disk or an optical disk or the like.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily use the technical scope disclosed in the embodiments of the present invention. All changes or substitutions contemplated are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim

[1] A method for implementing local exchange, comprising:

After detecting that the calling user and the called user satisfy the local exchange, performing call setup, and establishing a correspondence between the identification information of the calling user and the identification information of the called user; after receiving the voice stream, according to the Corresponding relationship replaces user identification information of the voice stream

[2] The method according to claim 1, wherein the specific method of establishing a correspondence between the calling user and the called user identification information is:

A network worksheet is established, and the network worksheet is used to store identification information of the calling user and the called user.

[3] The method according to claim 1, wherein the method further includes: before detecting whether the calling user and the called user meet the condition of the local exchange, the method further includes:

Receive a call setup request sent by the calling user.

[4] The method according to claim 3, wherein the method further comprises: before receiving the call setup request:

Receive an indication message to initiate a local exchange.

[5] The method according to claim 1, wherein the detecting that the calling user and the called user satisfy the local exchange includes:

If it is detected that the calling user and the called user are within the coverage of the same base station device, the calling user and the called user satisfy the condition of local exchange.

[6] The method according to claim 2, wherein the replacing the user identification information of the voice stream according to the correspondence relationship comprises:

If the sending end of the voice stream is the calling user, the identification information of the called user is queried according to the network work table, and the user identification information of the voice stream is replaced with the identification information of the called user; and/or

And if the sending end of the voice stream is a called user, querying the identification information of the calling user according to the network work table, and replacing the user identification information of the voice stream with the identification information of the calling user.

[7] The method according to claim 5, wherein the base station device is a base transceiver station or Base station controller.

[8] The method according to claim 1, wherein the method is applied to packet switching.

[9] The method according to claim 1, wherein the method further comprises: sending the replaced voice stream to the peer user after the replacing.

[10] The method according to any one of claims 1 to 9, wherein, in the case of controlling the transmission method based on the advanced data link, the identification information is carrier frequency identification information and user identification information; or based on In the case of the network protocol transmission method, the identification information is a network protocol address and a user datagram protocol port number; or in the case of the asynchronous transmission mode transmission method, the identification information is a virtual channel identifier and a channel identifier.

[11] A device for implementing local exchange, wherein the device comprises:

a receiving module, configured to receive a call setup request message and a voice stream;

a detecting module, configured to detect, after the receiving module receives the call setup request message, whether the calling user and the called user meet the condition of local exchange;

a calling module, configured to perform call setup under the condition that the detecting module detects that the local exchange is satisfied;

And a establishing module, configured to establish, after the call module is established by the calling module, a correspondence between the identification information of the calling user and the identification information of the called user;

And a replacement module, configured to: after the receiving module receives the voice stream, replace the user identification information of the voice stream according to the correspondence established by the establishing module.

[12] The device according to claim 11, wherein the establishing, by the establishing module, the correspondence between the identification information of the calling user and the identification information of the called user includes:

[13] The apparatus according to claim 11, wherein the receiving module is further configured to: receive an indication message for initiating a local exchange.

[14] The device according to claim 12, wherein the replacement module comprises:

An identification submodule, configured to determine a sending end of the voice stream;

An interchange submodule, configured to: if the identification submodule determines that the sending end of the voice stream is used for calling Retrieving the identification information of the called user according to the network work table, and replacing the user identification information of the voice stream with the identification information of the called user;

And/or the identifying sub-module, if it is determined that the sending end of the voice stream is the called user, querying the identification information of the calling user according to the network work table, and replacing the user identification information of the voice stream The identification information of the calling user.

[15] The apparatus according to claim 11, wherein the apparatus is a base transceiver station or a base station controller.

[16] A system for implementing local switching, comprising: a base station device, wherein

The base station device is configured to receive a call request message from the terminal, and if it is detected that the calling user and the called user meet the condition of the local exchange, perform call setup; establish correspondence between the identification information of the calling user and the identification information of the called user. Relationship; after receiving the voice stream, replacing the user identification information of the voice stream according to the correspondence.

[17] The system according to claim 16, wherein the establishing, by the base station device, the correspondence between the identification information of the calling user and the identification information of the called user includes: establishing a network work table, the network work table It is used to store the identification information of the calling user and the called user.