CN101291538B - Method for communication exchange in message receiving and sending station of base station, and subsystem of base station - Google Patents

Method for communication exchange in message receiving and sending station of base station, and subsystem of base station Download PDF

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Publication number
CN101291538B
CN101291538B CN200810110678XA CN200810110678A CN101291538B CN 101291538 B CN101291538 B CN 101291538B CN 200810110678X A CN200810110678X A CN 200810110678XA CN 200810110678 A CN200810110678 A CN 200810110678A CN 101291538 B CN101291538 B CN 101291538B
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China
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travelling carriage
mobile station
bts
called mobile
caller travelling
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CN101291538A (en
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刘绍峰
邹成钢
李国宏
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN200810110678XA priority Critical patent/CN101291538B/en
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Priority to PCT/CN2009/071866 priority patent/WO2009149636A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

In the embodiment, the invention discloses a method for carrying out the communication switching on a base transceiver station (BTS) and a base subsystem, relating to a telecommunication technology. The invention solves the problem of the communication switching between a calling mobile platform and a called mobile platform positioned on the same BTS set. The method comprises that whether the calling mobile platform and the called mobile platform are from the same BTS set of the same base controller BSC is judged; if yes, the calling mobile platform and the called mobile platform carry out the communication switching in a transmission convergence BTS of the BTS set; and the base subsystem comprises the base controller and the base transceiver station. The embodiment of the invention ensures that the calling mobile platform and the called mobile platform from the same BTS set can realize the communication switching in the transmission convergence BTS of the BTS set without coding /decoding for a voice frame through a converter TC.

Description

Communicate the method and the base station sub-system of exchange at base transceiver station
Technical field
The present invention relates to telecommunication technology, relate in particular to a kind of base transceiver station (Base Transceiver Station, BTS) communicate exchange method and base station sub-system (BaseStation Subsystem, BSS).
Background technology
With global system for mobile communications (Global System for Mobile communications; GSM) be example; In the gsm system; Base station sub-system generally includes: base transceiver station, base station controller (Base Station Controller, BSC) and/or transcoder (Transcoder, TC).BTS is through Um wave point and travelling carriage (Mobile Station; MS) communication, TC through the A interface be external to mobile switching centre (Mobile Switching Center, MSC); Inner at BSS, BSC links to each other with BTS, links to each other with TC through Ater Interface through Abis interface.
According to gsm protocol, BSS does not provide the function of exchange of speech business, and transmission arrives BSC to up speech frame through Abis interface from BTS; Transmission arrives TC through Ater Interface after the BSC inner exchanging, and TC decodes to speech frame, is sent to core net (Core Network through the A interface again; CN) MSC of side; Change to descending speech frame in the CN top-cross, transmission arrives TC through the A interface again, carry out the coding of downlink speech frame by TC after; Be transferred to BSC through Ater Interface, after the BSC inner exchanging, transfer to BTS through Abis interface again.
In the prior art; When a pair of mobile calls is positioned at identical wireless access network internal; When especially the BTS that inserts of caller travelling carriage and called mobile station was positioned at same BTS group, this speech frame also must make a circulation to be transferred to core net CN side and exchange, and was as shown in Figure 1; Call out the processing of the following link of speech frame process between a pair of calling and called MS (MSa, MSb):
MSa-＞BTS1-＞BTS3-＞BSC-＞TC-＞MSC-＞TC-＞BSC-＞BTS?3-＞BTS2-＞MSb。
In the invention process, the inventor finds to exist at least in the prior art following problem:
1) because there be twice TC encoding and decoding conversion in speech frame in transmission, will cause, reduce voice quality, increase the waste of TC resource and Ater Interface transfer resource simultaneously than long time delay;
2) consumption of the bandwidth of Abis interface transmission network can be increased the weight of, and the bottleneck of Abis interface transfer resource can be caused existing;
3) because the participation of MSC can increase existing CN side waste of network resources.
Summary of the invention
Embodiments of the invention provide a kind of method and base station sub-system that communicates exchange at base transceiver station BTS; Be used to solve the interior caller travelling carriage of identical BTS group and the communication exchange problem of called mobile station of being in; Can save the transfer resource of Abis interface and Ater Interface; Propagation delay time when reducing conversation improves voice quality, saves the transmission bandwidth of TC and CN side simultaneously.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method that communicates exchange at base transceiver station BTS comprises:
Judge that said BSC was adjusted into identical speech encoding rate with the speech encoding rate of caller travelling carriage and called mobile station when caller travelling carriage and called mobile station all came from the identical BTS group under the same base station controller BSC;
Said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group carries out following communication exchange:
Configuration Abis interface transmission time slot information table in the Transmission Convergence BTS in said BTS group; Transmission time slot information table according to configuration carries out loopback with the circuit time slot between said caller travelling carriage and the called mobile station; Perhaps configuration Abis interface network interworking function IWF shows in the Transmission Convergence BTS in said BTS group; IWF table change purpose IP and destination interface according to configuration carry out loopback with the exchange route between said caller travelling carriage and the called mobile station.
A kind of base station controller comprises:
BSC Radio Resource module; Be used for when knowing caller travelling carriage and called mobile station from same base station controller BSC; The speech encoding rate of said caller travelling carriage and called mobile station is adjusted into identical speech encoding rate, and sends the communication exchange request message to the Base Transceiver Station Management module;
The Base Transceiver Station Management module is used for according to said communication exchange request message, judges that when said caller travelling carriage and called mobile station were positioned at identical BTS group, the Transmission Convergence BTS in said BTS group sent the instruction that communicates exchange.
A kind of base transceiver station comprises:
Receiving element is used to receive the instruction that communicates exchange that base station controller BSC is sent;
First dispensing unit is used to dispose Abis interface transmission time slot information table, and said transmission time slot information table is used to write down the caller travelling carriage of the said base transceiver station of access and the circuit time slot of called mobile station;
Second dispensing unit is used to dispose Abis interface network interworking function IWF table, and said IWF table is used to write down the caller travelling carriage of the said base transceiver station of access and the exchange route of called mobile station;
Crosspoint; Be used for instructing according to the said communication exchange that receiving element receives; Caller travelling carriage and called mobile station to inserting said base transceiver station are carried out following communication exchange: according to the transmission time slot information table of said first dispensing unit configuration circuit time slot of said caller travelling carriage and called mobile station is carried out loopback; Perhaps, the exchange route of said caller travelling carriage and called mobile station is carried out loopback according to the IWF table change purpose IP and the destination interface of said second dispensing unit configuration.
A kind of base station sub-system comprises:
Base station controller; Be used to judge when caller travelling carriage and called mobile station all come from the identical BTS group under the same base station controller BSC; The speech encoding rate of caller travelling carriage and called mobile station is adjusted into identical speech encoding rate, and the Transmission Convergence BTS in said BTS group sends the instruction that communicates exchange;
Base transceiver station; Be used for instructing according to the said communication exchange that comes from base station controller; Caller travelling carriage and called mobile station to inserting said base transceiver station are carried out following communication exchange: configuration Abis interface transmission time slot information table; Said transmission time slot information table is used to write down the caller travelling carriage and the circuit time slot of called mobile station that inserts said base transceiver station, according to the transmission time slot information table that disposes the circuit time slot of said caller travelling carriage and called mobile station is carried out loopback; Perhaps dispose Abis interface network interworking function IWF table; Said IWF table is used to write down the caller travelling carriage of the said base transceiver station of access and the exchange route of called mobile station; IWF table change purpose IP and destination interface according to configuration carry out loopback with the exchange route of said caller travelling carriage and called mobile station.
The above technical scheme that the embodiment of the invention provides; When judging that caller travelling carriage and called mobile station come from the identical BTS group under the same base station controller BSC; Said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicates exchange, and making and need not process TC from the caller travelling carriage in the identical BTS group with called mobile station is that speech frame carries out coding/decoding, thereby has reduced the propagation delay time when conversing; Improve voice quality, saved the TC resource; And saved the transfer resource of Abis interface and Ater Interface; Can not receive simultaneously the restriction of core net, need just not change and to support, therefore also save the transmission bandwidth of CN side core net.
Description of drawings
Fig. 1 is the speech frame processing procedure sketch map of a pair of calling and called MS in the prior art;
Fig. 2 communicates the method flow diagram of exchange for what the embodiment of the invention provided at BTS;
Fig. 3 is the sketch map that is positioned at one or more BTS situations of identical BTS group under the TDM mode;
Fig. 4 communicates the sketch map of exchange at same BTS for the embodiment of the invention one;
Fig. 5 communicates the sketch map of exchange at different B TS for the embodiment of the invention two;
Fig. 6 communicates the sketch map of exchange at IP Transmission Convergence BTS for the embodiment of the invention three;
A kind of controller function of base station module diagram that Fig. 7 provides for the embodiment of the invention;
A kind of base transceiver station structural representation that Fig. 8 provides for the embodiment of the invention;
A kind of base station sub-system structural representation that Fig. 9 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides BTS group and Transmission Convergence BTS notion:
Under the time division multiplexing tdm pattern, if:
Caller travelling carriage and called mobile station insert same BTS;
Perhaps the caller travelling carriage inserts different BTS with called mobile station, and said different access BTS directly or indirectly links to each other with identical one-level BTS;
Perhaps, the BTS that the side among this two side of caller travelling carriage and called mobile station inserts is one-level BTS, and the BTS that the opposing party inserts directly or indirectly links to each other with this one-level BTS; Wherein, described one-level BTS is meant the BTS that directly links to each other with BSC through Abis interface;
Meet a kind of of said circumstances; Think that then the calling and called travelling carriage is positioned at identical BTS group; Under the TDM pattern; Transmission Convergence BTS can be the same access BTS of caller travelling carriage and called mobile station, or the one-level BTS that directly links to each other with BSC, and one or more BTS link to each other through Transmission Convergence BTS and constitute identical BTS group.
Under the IP pattern, if:
Caller travelling carriage and called mobile station insert same BTS;
Perhaps, the caller travelling carriage inserts different BTS with called mobile station, and said different access BTS can pass through the intercommunication of IP transmission network;
Perhaps, caller travelling carriage and called mobile station insert different BTS, and said different access BTS but can be through same IP Transmission Convergence BTS intercommunication in different I P transmission networks;
Meet a kind of of said circumstances, think that then the calling and called travelling carriage is positioned at identical BTS group.Under I P pattern; Transmission Convergence BTS can be the same access BTS of caller travelling carriage and called mobile station; Maybe can pass through the different access BTS of IP transmission network intercommunication, or IP Transmission Convergence BTS, one or more BTS link to each other through Transmission Convergence BTS and constitute identical BTS group.
Below in conjunction with accompanying drawing the method, base station controller, base transceiver station and the base station sub-system that communicate exchange at BTS that the embodiment of the invention provides is described in detail.
As shown in Figure 2, Fig. 2 communicates the sketch map of the method for exchange for what the embodiment of the invention provided at BTS, and the present embodiment method comprises:
Step 201 judges that whether caller travelling carriage and called mobile station are all from same base station controller BSC.
If caller travelling carriage and called mobile station then continue step 202 all from same BSC,, then can withdraw from the described communication exchange of present embodiment and handle if caller travelling carriage and called mobile station are not from same BSC.
In this step: BSC is through global call sign (Global Call Reference; GCR) MS terminal of unique identification; This sign comprises global BSC identification marking (Global BSC Identifier) and local call sign (Local Call Reference), is used for the interior calling of unique identification BSC and BSC respectively.
Judge that whether caller travelling carriage and called mobile station comprise from the mode of same BSC:
Mode one can not rely on MSC and accomplish calling detection, the transmission of GCR and detect and can accomplish by TC, and concrete testing process is sent the GCR of caller travelling carriage such as: the BSC of caller mobile station side to up TC, and said GCR comprises global BSC identification marking; Descending TC receives the GCR of said caller travelling carriage and is sent to the BSC of called mobile station side; The BSC of said called mobile station side utilizes the global BSC identification marking among the GCR of said caller travelling carriage to judge that whether caller travelling carriage and called mobile station are all from same BSC.
Mode two can utilize MSC to accomplish said calling detection, and detailed process is sent the GCR of caller travelling carriage such as: the BSC of caller mobile station side to MSC, and said GCR information comprises global BSC identification marking; The GCR of said caller travelling carriage is received and is sent to the BSC of called mobile station side by MSC; Utilize the global BSC identification marking among the GCR of said caller travelling carriage to judge that whether caller travelling carriage and called mobile station are from same BSC by the BSC of said called mobile station side.
Step 202, said BSC judges whether said calling and called travelling carriage is positioned at identical BTS group.
If said caller travelling carriage is positioned at identical BTS group with called mobile station, then continue step 203, if not being positioned at identical BTS group, then can withdrawing from the described communication exchange of present embodiment and handle.
Be illustrated in figure 3 as under the time division multiplexing tdm pattern, the calling and called travelling carriage is positioned at the multiple situation of the BTS of identical BTS group, comprising:
Caller travelling carriage and called mobile station insert same BTS ( situation 1 or 4 or 5 described in figure); Perhaps,
Caller travelling carriage and called mobile station insert different BTS, said different access BTS directly or indirectly link to each other with identical one-level BTS (like said situation 2 or 3); Perhaps,
The BTS that caller travelling carriage and called mobile station one side insert is one-level BTS, the BTS that the opposing party inserts directly or indirectly link to each other with this one-level BTS (like said situation 6).
Wherein, Described one-level BTS is meant the BTS that directly links to each other with BSC through Abis interface, and the BTS at the Transmission Convergence point place of the BTS that said calling and called insert in the BTS group can be referred to as Transmission Convergence BTS; Promptly under the TDM pattern; Transmission Convergence BTS can be the same access BTS of calling and called travelling carriage, or the one-level BTS that directly links to each other with BSC, and one or more BTS link to each other through Transmission Convergence BTS and constitute identical BTS group.Meet a kind of of said circumstances, think that then the calling and called travelling carriage is positioned at identical BTS group.
Under the IP pattern, the BTS that the calling and called travelling carriage is positioned at identical BTS group also can have multiple situation, comprising:
Caller travelling carriage and called mobile station insert same BTS; Perhaps,
The caller travelling carriage inserts different BTS with called mobile station, and said different access BTS is through the intercommunication of I P transmission network; Perhaps,
Caller travelling carriage and called mobile station insert different BTS, and said different access BTS but can be through same IP Transmission Convergence BTS intercommunication in different IP transmission networks.
Do not have BTS rank notion in the BTS group under the IP pattern, all BTS grades all are identical.The BTS at the Transmission Convergence point place of the BTS that said calling and called insert in the BTS group; Can be referred to as Transmission Convergence BTS; Promptly under the IP pattern, Transmission Convergence BTS can be the same access BTS of calling and called travelling carriage, maybe can be through the different access BTS of IP transmission network intercommunication; Or IP Transmission Convergence BTS, one or more BTS link to each other through Transmission Convergence BTS and constitute identical BTS group.Meet a kind of of said circumstances, think that then the calling and called travelling carriage is positioned at identical BTS group.
Step 203, said BSC judges that whether said caller travelling carriage is identical with speech encoding rate in the called mobile station access information, if the speech encoding rate in caller travelling carriage and the called mobile station access information is inequality, then gets into step 204; If said caller travelling carriage is identical with speech encoding rate in the called mobile station access information, then get into step 205.
Step 204 is adjusted into identical speech encoding rate with the speech encoding rate of caller travelling carriage and called mobile station.
The scheme that the speech encoding rate of caller travelling carriage and called mobile station is adjusted into identical speech encoding rate can have multiple, comprising: the speech encoding rate that the speech encoding rate of called mobile station is adjusted to the caller travelling carriage; Perhaps also can be the speech encoding rate of caller travelling carriage to be adjusted to the speech encoding rate of called mobile station; Perhaps also can be that the speech encoding rate of caller travelling carriage and called mobile station is adjusted to caller travelling carriage and the called mobile station speech encoding rate same speech encoding rate in occuring simultaneously.
Step 205, the Transmission Convergence BTS of said BSC in said BTS group sends the instruction that communicates exchange.
Step 206, according to said communication exchange instruction, said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicates exchange.
Transmission Convergence BTS in said BTS group communicates exchange and specifically can comprise two kinds of situation, such as:
Under the TDM pattern; Configuration Abis interface transmission time slot information table in said Transmission Convergence BTS; Said transmission time slot information table record be the circuit gap information of caller travelling carriage and called mobile station, according to the transmission time slot information table that disposes the circuit time slot of said caller travelling carriage and called mobile station is carried out loopback.
Under the IP pattern; Configuration Abis interface network interworking function (Interworking Function in said Transmission Convergence BTS; IWF) table; Said IWF table record be the exchanging routing information of caller travelling carriage and called mobile station, IWF table change purpose IP and destination interface according to configuration carry out loopback with the exchange route of said caller travelling carriage and called mobile station.Table 1 and table 2 are depicted as the IWF table that disposes under the IP pattern, can convert the ascending voice frame format into the IP message format according to the IWF table; Can be the speech frame form with the downstream IP message format conversion; And can up-downgoing speech frame form be changed mutually.
Table 1
Figure GDA0000058985750000081
Table 2
Speech frame Speech frame
The ascending voice frame Downlink speech frame
After Transmission Convergence BTS in said BTS group communicated exchange, the method for the embodiment of the invention like Fig. 2, can further include:
Step 207, said BSC discharges the transfer resource of Ater Interface and to the transfer resource of the Abis interface of said Transmission Convergence BTS.
After said caller travelling carriage and the end of called mobile station communication exchange, the method for the embodiment of the invention specifically can also comprise:
Step 208, said Transmission Convergence BTS removes circuit time slot loopback between said caller travelling carriage and the called mobile station or exchange route loopback.
The loopback method for dismounting can be; Abis interface transmission time slot information table or network interworking function IWF table that said BSC notifies said Transmission Convergence BTS to delete said configuration are removed the circuit time slot loopback or the exchange route loopback of said caller travelling carriage and called mobile station by Transmission Convergence BTS.
What the embodiment of the invention provided communicates the method for exchange at BTS; In caller travelling carriage and called mobile station during from same BSC; At first by BSC whether caller travelling carriage and called mobile station being positioned at identical BTS group judges; If said caller travelling carriage is positioned at identical BTS group with called mobile station; Then judge by BSC whether said caller travelling carriage is identical with speech encoding rate in the called mobile station access information, if different, then the speech encoding rate with caller travelling carriage and called mobile station is adjusted to identical speed again.Through above operation; After the Transmission Convergence BTS transmission of said same BSC in said identical BTS organizes communicates exchange instruction; According to said communication exchange instruction, said caller travelling carriage and called mobile station can communicate exchange at the Transmission Convergence BTS in the said BTS group.Like this, make to need not speech frame to be carried out coding/decoding, thereby reduced the propagation delay time when conversing, improved voice quality, saved the TC resource through TC from caller travelling carriage in the identical BTS group and called mobile station; And saved the transfer resource of Abis interface and Ater Interface; Can not receive simultaneously the restriction of core net, need just not change and to support, therefore also save the transmission bandwidth of CN side core net.
Said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicates exchange can carry out under two kinds of patterns: TDM pattern and IP pattern.Exchange under the TDM pattern relatively, the mixed transmission modes of IP bearing data service can realize arrowband, the integrated transmission in broadband, can reduce the transmission construction and the O&M cost of operator greatly.Do explanation more specifically in the face of communicating exchange at BTS under the IP pattern down:
Embodiment one, and is as shown in Figure 4, and Fig. 4 is under the IP pattern, communicates the sketch map of exchange at same BTS, and the method for present embodiment one comprises:
Step 401, BSC judges knows calling and called MSa, MSb under same BTS, specifically as shown in Figure 4, under the BST1 that can coexist.
Step 402; Said BSC judges that to know said caller travelling carriage identical with speech encoding rate in the called mobile station access information; If perhaps the speech encoding rate in caller travelling carriage and the called mobile station access information is inequality, then the speech encoding rate with the calling and called travelling carriage is adjusted into identical speed.
Step 403, said BSC sends the instruction that communicates exchange to this BTS1, and said instruction carries the IWF table, the information of said IWF table, as:
The ascending voice frame Downlink speech frame
The speech frame of Msa The speech frame of MSb
Step 404, BTS1 shows according to said IWF, and the speech frame of MSa is replaced with the speech frame of MSb, and processing procedure is similar in the other direction, thereby is implemented in the inside voice loopback of BTS1.
In present embodiment one terminal MS a and MSb voice call; Can not be routed to BSC according to the IP address; But directly carry out voice loopback in BTS1 inside; Realize the communication exchange of speech frame between MSa and the MSb, therefore saved the transfer resource of BTS1 to the Abis interface of BSC, the while has also been saved transfer resource and the transmission bandwidth of TC and CN side of the Ater Interface of BSC and TC.
Embodiment two, and is as shown in Figure 5, and Fig. 5 is for communicating the sketch map of exchange at different B TS, and the method for present embodiment two comprises:
Step 501; BSC judges knows that caller mobile station MS a and called mobile station MSb are from different BTS; And can pass through the intercommunication of IP transmission network between these different B TS, specifically as shown in Figure 5, can be that MSa is from BTS1; MSb can pass through the intercommunication of IP transmission network from BTS3 between BTS1 and the BTS3.
Step 502; Said BSC judges that to know said caller travelling carriage identical with speech encoding rate in the called mobile station access information; If perhaps the speech encoding rate in caller travelling carriage and the called mobile station access information is inequality, then the speech encoding rate with the calling and called travelling carriage is adjusted into identical speed.
Step 503, said BSC sends the instruction that communicates exchange to this BTS1, and said instruction carries the IWF table, the information of said IWF table, as:
Step 504, said BSC sends the instruction that communicates exchange to this BTS3, and said instruction carries the IWF table, the information of said IWF table, as:
Step 505, BTS1 shows according to IWF, the purpose IP of the speech frame of MSa is changed to the IP3 of BTS3 by the IP0 of BSC; Destination interface is changed to the PORT3 of BTS3 by the PORT0 of BSC; This message transmits at IP network, is routed directly to BTS3 according to purpose IP address ip 3, and the speech frame that in BTS3, this IP message is changed to descending MSb is handled; Processing procedure is similar in the other direction, thereby realizes the communication exchange of speech frame between MSa and the MSb.
In present embodiment two terminal MS a and MSb voice call; Can not be routed to BSC according to the IP address; But directly between BTS1 and BTS3, exchange the route loopback; Realize the communication exchange of speech frame between MSa and the MSb, therefore saved the transfer resource to BSC and BTS2 to the Abis interface of BSC by BTS1, the while has also been saved transfer resource and the transmission bandwidth of TC and CN side of the Ater Interface of BSC and TC.
Embodiment three, and is as shown in Figure 6, and Fig. 6 is for to converge the sketch map that BTS communicates exchange at IP, and the method for present embodiment three comprises:
Step 601, BSC judges knows caller mobile station MS a and called mobile station MSb from different BTS, these different B TS is at different IP transmission networks; But can transmit intercommunication through IP Transmission Convergence BTS;, specifically as shown in Figure 6, can be: MSa be from BTS1; MSb is from BTS3, and BTS1 and BTS3 can carry out intercommunication through IP Transmission Convergence BTS.
Step 602; Said BSC judges that to know said caller travelling carriage identical with speech encoding rate in the called mobile station access information; If perhaps the speech encoding rate in caller travelling carriage and the called mobile station access information is inequality, then the speech encoding rate with the calling and called travelling carriage is adjusted into identical speed.
Step 603, said BSC sends the instruction that communicates exchange to IP Transmission Convergence BTS, and said instruction carries the IWF table, the information of said IWF table, as:
Figure GDA0000058985750000111
Step 604, the speech frame of MSa are passed through the IP port of BTS1 to IP Transmission Convergence BTS transmission of IP data bag, and the purpose IP of this IP packet is the IP0 of BSC; Destination interface is the PORT0 of BSC; Exchange the route loopback according to said IWF table at IP Transmission Convergence BTS place, the purpose IP of the IP packet of MSa is replaced with the IP3 of BTS3 by the IP0 of BSC, this message transmits at IP network; Be routed directly to BTS3 according to purpose IP address ip 3; And in BTS3, be modified to the IP packet of MSb and handle, processing procedure is similar in the other direction, thereby realizes the communication exchange of speech frame between MSa and the MSb.
In present embodiment three terminal MS a and MSb voice call; Can not be routed to BSC according to the IP address; Carry out voice loopback between BTS and the BTS3 and directly converge at BTS1, IP; Realize the communication exchange of speech frame between MSa and the MSb, therefore having saved IP converges the transfer resource of BTS to the Abis interface of BSC, and the while has also been saved transfer resource and the transmission bandwidth of TC and CN side of the Ater Interface of BSC and TC.
On the method basis that the embodiment of the invention provides, the embodiment of the invention provides a kind of base station controller, and is as shown in Figure 7, comprises BSC Radio Resource module 701, BSC resource control module 702 and Base Transceiver Station Management module 703, wherein,
BSC Radio Resource module 701 is used for when knowing caller travelling carriage and called mobile station all from same base station controller, sends to the Base Transceiver Station Management module and communicates the exchange request message.
Whether caller travelling carriage and called mobile station can be judged by TC or by MSC from same BSC.Determination methods can adopt the mode described in the said method to carry out.
Base Transceiver Station Management module 703 is used for according to the said exchange request message that communicates, and judges that when said caller travelling carriage and called mobile station were positioned at identical BTS group, the Transmission Convergence BTS in said BTS group sent the instruction that communicates exchange.
Said BSC Radio Resource module 701 also is used for before Transmission Convergence BTS in said BTS group communicates exchange, and the speech encoding rate of caller travelling carriage and called mobile station is adjusted into identical speech encoding rate.
The scheme that said speech encoding rate with caller travelling carriage and called mobile station is adjusted into identical speech encoding rate can have multiple, comprising: the speech encoding rate that the speech encoding rate of called mobile station is adjusted to the caller travelling carriage; Or the speech encoding rate of caller travelling carriage is adjusted to the speech encoding rate of called mobile station; Or the speech encoding rate of caller travelling carriage and called mobile station is adjusted to caller travelling carriage and the called mobile station speech encoding rate same speech encoding rate in occuring simultaneously.
BSC resource control module 702 is used for after said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicates exchange, discharges the transfer resource of Ater Interface and the transfer resource of the Abis interface of said Transmission Convergence BTS extremely.
On the method basis that the embodiment of the invention provides, the embodiment of the invention also provides a kind of base transceiver station, and is as shown in Figure 8, comprising:
Receiving element 801 is used to receive the instruction that communicates exchange that base station controller BSC is sent.
Crosspoint 802, the communication exchange that is used for receiving according to said receiving element is instructed, and caller travelling carriage and the called mobile station that inserts said base transceiver station communicated exchange.
According to the BTS of different mode, said base transceiver station also comprises:
The first dispensing unit 803A is used to dispose Abis interface transmission time slot information table, and said transmission time slot information table is used to write down the caller travelling carriage of the said base transceiver station of access and the circuit time slot of called mobile station.Said crosspoint 802 also is used for according to the transmission time slot information table of said first dispensing unit configuration circuit time slot of said caller travelling carriage and called mobile station being carried out loopback.
The second dispensing unit 803B is used to dispose Abis interface network interworking function IWF table, and said IWF table is used to write down the caller travelling carriage of the said base transceiver station of access and the exchange route of called mobile station.Said crosspoint 802 also is used for IWF table change purpose IP and destination interface according to said second dispensing unit configuration, and the exchange route of said caller travelling carriage and called mobile station is carried out loopback.
Said base transceiver station also comprises:
Delete cells 804; Be used for behind said caller travelling carriage and called mobile station sign off; Delete said Abis interface transmission time slot information table or network interworking function IWF table, with between said caller travelling carriage and the called mobile station channel time slot loopback or exchange route loopback remove.
At last, on the method basis that the embodiment of the invention provides, the embodiment of the invention also provides a kind of base station sub-system, and is as shown in Figure 9, comprising:
Base station controller 910 is used to judge that the Transmission Convergence BTS in said BTS group sent the instruction that communicates exchange when caller travelling carriage and called mobile station came from the identical BTS group under the same base station controller BSC.
Base transceiver station 920 is used for instructing according to the said communication exchange that comes from base station controller, and caller travelling carriage and the called mobile station that inserts said base transceiver station communicated exchange.
Said base station controller 910 also is used for before Transmission Convergence BTS in said BTS group communicates exchange, and the speech encoding rate of caller travelling carriage and called mobile station is adjusted into identical speech encoding rate.
Said base transceiver station 920 also is used to dispose Abis interface transmission time slot information table, and said transmission time slot information table is used to write down the caller travelling carriage of the said base transceiver station of access and the circuit time slot of called mobile station; Transmission time slot information table according to configuration carries out loopback with the circuit time slot of said caller travelling carriage and called mobile station.
Said base transceiver station 920 also is used to dispose Abis interface network interworking function IWF table, and said IWF table is used to write down the caller travelling carriage of the said base transceiver station of access and the exchange route of called mobile station; IWF table change purpose IP and destination interface according to configuration carry out loopback with the exchange route of said caller travelling carriage and called mobile station.
After said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicates exchange,
Said base station controller 910 also is used to discharge the transfer resource of Ater Interface and to the transfer resource of said Transmission Convergence BTS Abis interface.
Behind said caller travelling carriage and called mobile station sign off,
Said base transceiver station 920 also is used to delete said Abis interface transmission time slot information table or network interworking function IWF table, and circuit time slot loopback between said caller travelling carriage and the called mobile station or exchange route loopback are removed.
The embodiment of the invention adopts above technical scheme; Be positioned at following time of same BSC at caller travelling carriage and called mobile station; At first judge by said BSC whether said caller travelling carriage and called mobile station are positioned at identical BTS group; If be positioned at identical BTS group; Then judge further by said BSC whether said caller travelling carriage is identical with speech encoding rate in the called mobile station access information, if speech encoding rate is inequality, then the speech encoding rate with caller travelling carriage and called mobile station is adjusted to identical speech encoding rate; At said caller travelling carriage identical with speech encoding rate in the called mobile station access information or the speech encoding rate of said caller travelling carriage and called mobile station is adjusted to identical speech encoding rate after; Send the instruction that communicates exchange by the Transmission Convergence BTS of BSC in the BTS group; BTS according to different mode; Through the mode of configuration Abis interface transmission time slot information table or network interworking function IWF table in Transmission Convergence BTS, realize that said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicates exchange.Like this, make that need not through TC from the caller travelling carriage in the identical BTS group with called mobile station is that speech frame carries out coding/decoding, thereby reduced the propagation delay time when conversing, improved voice quality, saved the TC resource; And saved the transfer resource of Abis interface and Ater Interface; Can not receive simultaneously the restriction of core net, need not make amendment and just can support, therefore also save the transmission bandwidth of CN side core net.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.

Claims (12)

1. one kind communicates the method for exchange at base transceiver station BTS, it is characterized in that, comprising:
Judge that said BSC was adjusted into identical speech encoding rate with the speech encoding rate of caller travelling carriage and called mobile station when caller travelling carriage and called mobile station all came from the identical BTS group under the same base station controller BSC;
Said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group carries out following communication exchange:
Configuration Abis interface transmission time slot information table in the Transmission Convergence BTS in said BTS group; Transmission time slot information table according to configuration carries out loopback with the circuit time slot between said caller travelling carriage and the called mobile station; Perhaps; Configuration Abis interface network interworking function IWF table in the Transmission Convergence BTS in said BTS group, IWF table change purpose IP and destination interface according to configuration carry out loopback with the exchange route between said caller travelling carriage and the called mobile station.
2. method according to claim 1 is characterized in that, said judgement caller travelling carriage and called mobile station all come from same base station controller BSC, comprising:
The base station controller BSC of caller mobile station side identifies GCR to the global call that up transcoder TC sends the caller travelling carriage, and said GCR comprises the global BSC identification marking of the base station controller BSC of said caller mobile station side;
Descending transcoder TC receives the global call sign GCR of said caller travelling carriage and is sent to the base station controller BSC of called mobile station side;
The base station controller BSC of said called mobile station side is utilized the global BSC identification marking of the base station controller BSC of caller mobile station side described in the GCR of said caller travelling carriage, judges to know that caller travelling carriage and called mobile station are all from same base station controller BSC.
3. method according to claim 1 is characterized in that, said judgement caller travelling carriage and called mobile station all come from same base station controller BSC, comprising:
The base station controller BSC of caller mobile station side identifies GCR to the global call that moving exchanging center MSC sends the caller travelling carriage, and said GCR comprises the global BSC identification marking of the base station controller BSC of said caller mobile station side;
Moving exchanging center MSC receives the GCR of said caller travelling carriage and is sent to the base station controller BSC of called mobile station side;
The base station controller BSC of said called mobile station side is utilized the global BSC identification marking of the base station controller BSC of the said caller mobile station side among the GCR of said caller travelling carriage, judges to know that caller travelling carriage and called mobile station are all from same base station controller BSC.
4. method according to claim 1 is characterized in that, after said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicated exchange, said method also comprised:
Said BSC discharges the transfer resource of Ater Interface and to the transfer resource of the Abis interface of said Transmission Convergence BTS.
5. method according to claim 4 is characterized in that, behind said caller travelling carriage and called mobile station sign off, said method also comprises:
Said Transmission Convergence BTS deletes said Abis interface transmission time slot information table or network interworking function IWF table, and circuit time slot loopback between said caller travelling carriage and the called mobile station or exchange route loopback are removed.
6. a base station controller is characterized in that, comprising:
BSC Radio Resource module; Be used for when knowing caller travelling carriage and called mobile station all from same base station controller; The speech encoding rate of said caller travelling carriage and called mobile station is adjusted into identical speech encoding rate, and sends the communication exchange request message to the Base Transceiver Station Management module;
The Base Transceiver Station Management module is used for according to said communication exchange request message, judges that when said caller travelling carriage and called mobile station were positioned at identical BTS group, the Transmission Convergence BTS in said BTS group sent the instruction that communicates exchange.
7. base station controller according to claim 6 is characterized in that, said base station controller also comprises:
BSC resource control module is used for after said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicates exchange, discharges the transfer resource of Ater Interface and the transfer resource of the Abis interface of said Transmission Convergence BTS extremely.
8. a base transceiver station is characterized in that, comprising:
Receiving element is used to receive the instruction that communicates exchange that base station controller BSC is sent; And
First dispensing unit, or, second dispensing unit,
Said first dispensing unit is used to dispose Abis interface transmission time slot information table, and said transmission time slot information table is used to write down the caller travelling carriage of the said base transceiver station of access and the circuit time slot of called mobile station;
Said second dispensing unit is used to dispose Abis interface network interworking function IWF table, and said IWF table is used to write down the caller travelling carriage of the said base transceiver station of access and the exchange route of called mobile station; Crosspoint; The communication exchange that is used for receiving according to said receiving element is instructed; Caller travelling carriage and called mobile station to inserting said base transceiver station are carried out following communication exchange: according to the transmission time slot information table of said first dispensing unit configuration circuit time slot of said caller travelling carriage and called mobile station is carried out loopback; Perhaps; IWF table change purpose IP and destination interface according to said second dispensing unit configuration carry out loopback with the exchange route of said caller travelling carriage and called mobile station.
9. base transceiver station according to claim 8 is characterized in that, said base transceiver station also comprises:
Delete cells; Be used for behind said caller travelling carriage and called mobile station sign off; Delete said Abis interface transmission time slot information table or network interworking function IWF table, circuit time slot loopback between said caller travelling carriage and the called mobile station or exchange route loopback are removed.
10. a base station sub-system is characterized in that, comprising: base station controller and base transceiver station;
Wherein, said base station controller comprises: BSC Radio Resource module and Base Transceiver Station Management module;
Said BSC Radio Resource module is used for when knowing caller travelling carriage and called mobile station all from same base station controller; The speech encoding rate of said caller travelling carriage and called mobile station is adjusted into identical speech encoding rate, and sends the communication exchange request message to the Base Transceiver Station Management module;
Said Base Transceiver Station Management module is used for according to said communication exchange request message, judges that when said caller travelling carriage and called mobile station were positioned at identical BTS group, the Transmission Convergence BTS in said BTS group sent the instruction that communicates exchange;
Wherein, said base transceiver station comprises: receiving element; First dispensing unit, or, second dispensing unit; Crosspoint;
Said receiving element is used to receive the instruction that communicates exchange that base station controller BSC is sent;
Said first dispensing unit is used to dispose Abis interface transmission time slot information table, and said transmission time slot information table is used to write down the caller travelling carriage of the said base transceiver station of access and the circuit time slot of called mobile station;
Said second dispensing unit is used to dispose Abis interface network interworking function IWF table, and said IWF table is used to write down the caller travelling carriage of the said base transceiver station of access and the exchange route of called mobile station;
Said crosspoint; The communication exchange that is used for receiving according to said receiving element is instructed; Caller travelling carriage and called mobile station to inserting said base transceiver station are carried out following communication exchange: according to the transmission time slot information table of said first dispensing unit configuration circuit time slot of said caller travelling carriage and called mobile station is carried out loopback; Perhaps; IWF table change purpose IP and destination interface according to said second dispensing unit configuration carry out loopback with the exchange route of said caller travelling carriage and called mobile station.
11. base station sub-system according to claim 10; It is characterized in that; Said base station controller also comprises: BSC resource control module; Be used for after said caller travelling carriage and the called mobile station Transmission Convergence BTS in said BTS group communicates exchange, discharge the transfer resource of Ater Interface and the transfer resource of the Abis interface of said Transmission Convergence BTS extremely.
12. base station sub-system according to claim 10; It is characterized in that; Said base transceiver station also comprises: delete cells; Be used for behind said caller travelling carriage and called mobile station sign off, delete said Abis interface transmission time slot information table or network interworking function IWF table, circuit time slot loopback between said caller travelling carriage and the called mobile station or exchange route loopback are removed.
CN200810110678XA 2008-06-13 2008-06-13 Method for communication exchange in message receiving and sending station of base station, and subsystem of base station Expired - Fee Related CN101291538B (en)

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CN101374355B (en) * 2008-10-24 2013-06-05 华为技术有限公司 Method and apparatus for implementing local exchange
CN101800911B (en) 2009-02-06 2012-10-17 华为技术有限公司 Method and system for realizing local exchange
CN101820650B (en) * 2009-02-27 2012-11-28 中兴通讯股份有限公司 Method and system for dynamically utilizing Abis time slot resources
CN101860991B (en) * 2009-04-13 2014-11-19 上海中兴软件有限责任公司 Method for mutually switching local exchange chain and non-local exchange chain
CN101868034B (en) * 2009-04-15 2015-07-22 中兴通讯股份有限公司 Method for establishing and removing local switch
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