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

Info

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
Authority
CN
China
Prior art keywords
mobile station
bts
calling mobile
bsc
calling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200810110678XA
Other languages
Chinese (zh)
Other versions
CN101291538A (en
Inventor
刘绍峰
邹成钢
李国宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN200810110678XA priority Critical patent/CN101291538B/en
Publication of CN101291538A publication Critical patent/CN101291538A/en
Priority to PCT/CN2009/071866 priority patent/WO2009149636A1/en
Application granted granted Critical
Publication of CN101291538B publication Critical patent/CN101291538B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • 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

Method for communication exchange in base transceiver station and base station subsystem
Technical Field
The present invention relates to telecommunication technology, and in particular, to a method for performing communication switching at a Base Transceiver Station (BTS) and a Base Station Subsystem (BSS).
Background
Taking Global System for Mobile communications (GSM) as an example, in a GSM System, a base station subsystem generally includes: a base transceiver station, a Base Station Controller (BSC), and/or a Transcoder (TC). BTS communicates with Mobile Station (MS) through Um wireless interface, TC connects to Mobile Switching Center (MSC) through A interface, BSC connects BTS through Abis interface and TC through Ater interface.
According to the GSM protocol, BSS does not provide the switching function of voice service, the ascending voice frame is transmitted from BTS to BSC through Abis interface, after the inside of BSC is switched, the ascending voice frame is transmitted to TC through Ater interface, TC decodes the voice frame, then the voice frame is transmitted to MSC at Core Network (CN) side through A interface, the descending voice frame is switched at CN side, and then the voice frame is transmitted to TC through A interface, after the TC codes the descending voice frame, the voice frame is transmitted to BSC through Ater interface, after the inside of BSC is switched, the voice frame is transmitted to BTS through Abis interface.
In the prior art, when a pair of mobile calls are located in the same radio access network, especially when the BTSs accessed by the calling mobile station and the called mobile station are located in the same BTS group, the voice frame must be transmitted to the core network CN side by turns for switching, as shown in fig. 1, the voice frame is processed by the following steps:
MSa->BTS1->BTS3->BSC->TC->MSC->TC->BSC->BTS 3->BTS2->MSb。
in the process of the invention, the inventor finds that at least the following problems exist in the prior art:
1) because the voice frame has two TC coding and decoding transformations in the transmission process, larger time delay can be caused, the voice quality is reduced, and meanwhile, the waste of TC resources and the transmission resources of an Ater interface is increased;
2) the consumption of the bandwidth of an Abis interface transmission network is aggravated, and the bottleneck of Abis interface transmission resources is caused;
3) due to the participation of the MSC, the waste of the existing CN side network resources is increased.
Disclosure of Invention
The embodiment of the invention provides a method for carrying out communication exchange at a base transceiver station BTS and a base station subsystem, which are used for solving the problem of communication exchange between a calling mobile station and a called mobile station in the same BTS group, can save the transmission resources of an Abis interface and an Ater interface, reduce the transmission delay during conversation, improve the voice quality and simultaneously save the transmission bandwidth of TC and CN sides.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
a method of communication switching at a base transceiver station BTS, comprising:
when the calling mobile station and the called mobile station are judged to be in the same BTS group under the same base station controller BSC, the BSC adjusts the voice coding rate of the calling mobile station and the voice coding rate of the called mobile station to the same voice coding rate;
the transmission convergence BTS of the calling mobile station and the called mobile station in the BTS group performs the following communication exchange:
configuring an Abis interface transmission time slot information table in a transmission convergence BTS in the BTS group, looping back a circuit time slot between the calling mobile station and the called mobile station according to the configured transmission time slot information table, or configuring an Abis interface network intercommunication function IWF table in the transmission convergence BTS in the BTS group, changing a target IP and a target port according to the configured IWF table, and looping back a switching route between the calling mobile station and the called mobile station.
A base station controller comprising:
a BSC wireless resource module, which is used for adjusting the voice coding rate of the calling mobile station and the called mobile station to the same voice coding rate and sending a communication exchange request message to a BTS management module when the calling mobile station and the called mobile station are from the same base station controller BSC;
and the BTS management module is used for sending a command for carrying out communication exchange to the transmission convergence BTS in the BTS group when judging that the calling mobile station and the called mobile station are positioned in the same BTS group according to the communication exchange request message.
A base transceiver station, comprising:
a receiving unit, configured to receive an instruction for performing communication switching sent by a base station controller BSC;
a first configuration unit, configured to configure an Abis interface transmission time slot information table, where the transmission time slot information table is used to record circuit time slots of a calling mobile station and a called mobile station accessing the base transceiver station;
a second configuration unit, configured to configure an IWF table of an Abis interface network interworking function, where the IWF table is used to record the switching routes of a calling mobile station and a called mobile station accessing the base transceiver station;
a switching unit, configured to perform the following communication switching on the calling mobile station and the called mobile station accessing the base transceiver station according to the communication switching instruction received by the receiving unit: according to the transmission time slot information table configured by the first configuration unit, the circuit time slots of the calling mobile station and the called mobile station are looped back, or according to the IWF table configured by the second configuration unit, the destination IP and the destination port are changed, and the switching route of the calling mobile station and the called mobile station is looped back.
A base station subsystem, comprising:
the base station controller is used for adjusting the voice coding rate of the calling mobile station and the called mobile station to the same voice coding rate when judging that the calling mobile station and the called mobile station are both from the same BTS group under the same base station controller BSC, and sending a command for communication exchange to the transmission convergence BTS in the BTS group;
a base transceiver station, configured to perform the following communication switching on a calling mobile station and a called mobile station accessing the base transceiver station according to the communication switching instruction from the base station controller: configuring an Abis interface transmission time slot information table, wherein the transmission time slot information table is used for recording circuit time slots of a calling mobile station and a called mobile station which are accessed to the base transceiver station, and looping back the circuit time slots of the calling mobile station and the called mobile station according to the configured transmission time slot information table; or configuring an Abis interface network interworking function IWF table, wherein the IWF table is used for recording the switching routes of a calling mobile station and a called mobile station which are accessed to the base transceiver station, changing a destination IP and a destination port according to the configured IWF table, and looping the switching routes of the calling mobile station and the called mobile station.
According to the technical scheme provided by the embodiment of the invention, when the calling mobile station and the called mobile station are judged to be in the same BTS group under the same base station controller BSC, the transmission of the calling mobile station and the called mobile station in the BTS group is converged to BTS for communication exchange, so that the calling mobile station and the called mobile station in the same BTS group do not need to encode/decode voice frames through TC, thereby reducing the transmission delay during conversation, improving the voice quality and saving TC resources; but also saves the transmission resources of the Abis interface and the Ater interface; meanwhile, the method is not limited by a core network, and can support without changing the core network, thereby saving the transmission bandwidth of the CN side.
Drawings
Fig. 1 is a schematic diagram illustrating a voice frame processing procedure of a pair of calling and called MSs in the prior art;
fig. 2 is a flowchart of a method for performing communication exchange at a BTS according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of one or more BTS within the same BTS group in a TDM manner;
fig. 4 is a schematic diagram of a communication exchange performed at the same BTS according to an embodiment of the present invention;
fig. 5 is a diagram illustrating communication exchanges between different BTSs according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of communication exchange performed at an IP transport convergence BTS according to a third embodiment of the present invention;
fig. 7 is a schematic diagram of a functional module of a base station controller according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a base transceiver station according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a base station subsystem according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a BTS group and transmission convergence BTS concept:
in the time division multiplexing TDM mode, if:
the calling mobile station and the called mobile station are accessed to the same BTS;
or the calling mobile station and the called mobile station are accessed to different BTSs, and the different accessed BTSs are directly or indirectly connected with the same first-level BTS;
or, the BTS accessed by one of the calling mobile station and the called mobile station is a first-level BTS, and the BTS accessed by the other party is directly or indirectly connected with the first-level BTS; wherein, the first-level BTS is a BTS directly connected with the BSC through an Abis interface;
in one of the above situations, the calling and called mobile stations are considered to be located in the same BTS group, and in the TDM mode, the transmission convergence BTS may be the same access BTS of the calling mobile station and the called mobile station, or a first-level BTS directly connected to the BSC, and one or more BTSs are connected by the transmission convergence BTS to form the same BTS group.
In IP mode, if:
the calling mobile station and the called mobile station are accessed to the same BTS;
or, the calling mobile station and the called mobile station are accessed to different BTSs, and the different accessed BTSs can be communicated with each other through an IP transmission network;
or, the calling mobile station and the called mobile station access different BTSs, and the different access BTSs are in different I P transmission networks but can be intercommunicated with each other through the same IP transmission convergence BTS;
one such scenario is met by considering the calling and called mobile stations to be located within the same BTS group. In the I P mode, the transport convergence BTS may be the same access BTS for the calling and called mobile stations, or different access BTSs that may interwork via an IP transport network, or an IP transport convergence BTS through which one or more BTSs are connected to form the same BTS group.
The method, base station controller, base transceiver station, and base station subsystem for performing communication switching at the BTS according to the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 2, fig. 2 is a schematic diagram of a method for performing communication switching at a BTS according to an embodiment of the present invention, where the method includes:
step 201, it is determined whether the calling mobile station and the called mobile station are both from the same base station controller BSC.
If the calling mobile station and the called mobile station are both from the same BSC, step 202 is continued, and if the calling mobile station and the called mobile station are not from the same BSC, the communication switching process described in this embodiment may be exited.
In this step: the BSC uniquely identifies an MS terminal through a Global Call Reference (GCR), and the identification comprises a Global BSC Identifier (Global BSC Identifier) and a Local Call Reference (Local Call Reference) which are respectively used for uniquely identifying calls in the BSC and the BSC.
The method for judging whether the calling mobile station and the called mobile station are from the same BSC comprises the following steps:
in the first mode, the call detection can be completed without depending on the MSC, and the transmission and detection of the GCR can be completed by the TC, and the specific detection procedures are as follows: a BSC at the calling mobile station side sends a GCR of the calling mobile station to an uplink TC, wherein the GCR comprises a global BSC identification mark; the descending TC receives the GCR of the calling mobile station and sends the GCR to the BSC of the called mobile station side; and the BSC at the called mobile station side judges whether the calling mobile station and the called mobile station are both from the same BSC by using the global BSC identification mark in the GCR of the calling mobile station.
In a second way, the call detection may be completed by using the MSC, and the specific procedures are as follows: the BSC at the calling mobile station side sends the GCR of the calling mobile station to the MSC, and the GCR information comprises a global BSC identification mark; the GCR of the calling mobile station is received by the MSC and is sent to the BSC of the called mobile station side; and the BSC at the side of the called mobile station judges whether the calling mobile station and the called mobile station are from the same BSC or not by utilizing the global BSC identification mark in the GCR of the calling mobile station.
Step 202, the BSC determines whether the calling and called mobile stations are located in the same BTS group.
If the calling mobile station and the called mobile station are located in the same BTS group, step 203 is continued, and if not, the communication switching process described in this embodiment may be exited.
As shown in fig. 3, there are several scenarios where the calling and called mobile stations are located at BTSs within the same BTS group in a time division multiplexing TDM mode, including:
the calling mobile station and the called mobile station access the same BTS (as in case 1 or 4 or 5 in the figure); or,
the calling mobile station and the called mobile station access different BTSs, which are directly or indirectly connected to the same primary BTS (as in case 2 or 3); or,
the BTS to which one of the calling and called mobile stations has access is a first-class BTS to which the other has access is directly or indirectly connected (as in scenario 6).
The first-level BTS is a BTS directly connected with the BSC through an Abis interface, the BTSs where the transmission convergence points of the BTSs accessed by the calling and called parties in the BTS group are located can be collectively called transmission convergence BTSs, namely, in a TDM mode, the transmission convergence BTSs can be the same access BTS of the calling and called mobile stations or the first-level BTS directly connected with the BSC, and one or more BTSs are connected through the transmission convergence BTSs to form the same BTS group. One such scenario is met by considering the calling and called mobile stations to be located within the same BTS group.
In IP mode, there are also a number of scenarios where the calling and called mobile stations are located at BTSs within the same BTS group, including:
the calling mobile station and the called mobile station are accessed to the same BTS; or,
the calling mobile station and the called mobile station are accessed to different BTSs, and the different access BTSs are communicated with each other through I P transmission networks; or,
the calling mobile station and the called mobile station are accessed to different BTSs, and the different access BTSs are in different IP transmission networks but can be intercommunicated through the same IP transmission convergence BTS.
There is no BTS level concept within the BTS group in IP mode and all BTS levels are the same. The BTSs where the transmission convergence point of the called and calling access BTSs in the BTS group is located may be collectively referred to as a transmission convergence BTS, that is, in the IP mode, the transmission convergence BTS may be the same access BTS of the calling and called mobile stations, or may be different access BTSs intercommunicated through an IP transmission network, or the IP transmission convergence BTS, and one or more BTSs are connected by the transmission convergence BTS to form the same BTS group. One such scenario is met by considering the calling and called mobile stations to be located within the same BTS group.
Step 203, the BSC judges whether the voice coding rates in the access information of the calling mobile station and the called mobile station are the same, if the voice coding rates in the access information of the calling mobile station and the called mobile station are not the same, step 204 is entered; if the speech coding rate in the access information of the calling mobile station and the called mobile station is the same, step 205 is entered.
Step 204, the voice coding rate of the calling mobile station and the called mobile station is adjusted to the same voice coding rate.
There are various schemes for adjusting the vocoding rates of the calling mobile station and the called mobile station to the same vocoding rate, including: adjusting the voice coding rate of the called mobile station to the voice coding rate of the calling mobile station; or, the voice coding rate of the calling mobile station is adjusted to the voice coding rate of the called mobile station; alternatively, the vocoding rates of the calling and called mobile stations may be adjusted to the same vocoding rate in the intersection of the vocoding rates of the calling and called mobile stations.
Step 205, the BSC sends an instruction to perform communication switching to the transmission aggregation BTSs in the BTS group.
And step 206, according to the communication switching instruction, the transmission of the calling mobile station and the called mobile station in the BTS group is converged to the BTS for communication switching.
The communication exchange of the transmission aggregation BTSs in the BTS group may specifically include two cases, such as:
under TDM mode, configuring Abis interface transmission time slot information table in said transmission convergence BTS, said transmission time slot information table recording circuit time slot information of calling mobile station and called mobile station, according to configured transmission time slot information table making circuit time slot of said calling mobile station and called mobile station implement loop back.
Under IP mode, configuring Abis interface network Interworking Function (IWF) table in the transmission convergence BTS, wherein the IWF table records the exchange route information of the calling mobile station and the called mobile station, changing the destination IP and the destination port according to the configured IWF table, and looping the exchange route of the calling mobile station and the called mobile station. Tables 1 and 2 show IWF tables configured in IP mode, which can convert the uplink voice frame format into IP packet format according to the IWF tables; the format of the downlink IP message can be converted into the format of a voice frame; and the formats of the uplink and downlink voice frames can be converted with each other.
TABLE 1
Figure GDA0000058985750000081
TABLE 2
Voice frame Voice frame
Uplink speech frame Downlink speech frame
After the transmission aggregation BTSs in the BTS group perform communication exchange, as shown in fig. 2, the method of the embodiment of the present invention may further include:
step 207, the BSC releases the transmission resource of the Ater interface and the transmission resource of the Abis interface to the transmission convergence BTS.
After the end of the communication exchange between the calling mobile station and the called mobile station, the method of the embodiment of the present invention may further include:
and step 208, the transmission convergence BTS loops back the circuit time slot or the exchange route between the calling mobile station and the called mobile station to remove.
The method for removing loopback may be that the BSC notifies the transmission convergence BTS to delete the configured Abis interface transmission time slot information table or network interworking function IWF table, and the transmission convergence BTS removes the circuit time slot loopback or the switch route loopback of the calling mobile station and the called mobile station.
The method for communication exchange at BTS provided by the embodiment of the invention, when a calling mobile station and a called mobile station are from the same BSC, the BSC judges whether the calling mobile station and the called mobile station are in the same BTS group, if the calling mobile station and the called mobile station are in the same BTS group, the BSC judges whether the voice coding rate in the access information of the calling mobile station and the called mobile station is the same, if not, the voice coding rate of the calling mobile station and the called mobile station is adjusted to the same rate. Through the above operations, after the same BSC sends a communication switching instruction to the transmission convergence BTSs in the same BTS group, the calling mobile station and the called mobile station may perform communication switching at the transmission convergence BTSs in the BTS group according to the communication switching instruction. Therefore, a calling mobile station and a called mobile station from the same BTS group do not need to encode/decode voice frames through TC, thereby reducing transmission delay during communication, improving voice quality and saving TC resources; but also saves the transmission resources of the Abis interface and the Ater interface; meanwhile, the method is not limited by a core network, and can support without changing the core network, thereby saving the transmission bandwidth of the CN side.
The communication exchange of the transmission convergence BTSs of the calling mobile station and the called mobile station in the BTS group can be carried out in two modes: TDM mode and IP mode. Compared with the switching in the TDM mode, the hybrid transmission mode of the IP bearer data service can realize the integrated transmission of the narrow band and the broadband, and can greatly reduce the transmission construction and operation and maintenance costs of operators. The following is a more detailed description of the communication switching at the BTS in IP mode:
in a first embodiment, as shown in fig. 4, fig. 4 is a schematic diagram of performing communication exchange in the same BTS in an IP mode, where the method in the first embodiment includes:
in step 401, the BSC determines to know that the calling and called parties MSa and MSb are under the same BTS, specifically, as shown in fig. 4, they may be under BST 1.
Step 402, the BSC judges that the speech coding rates in the access information of the calling mobile station and the called mobile station are the same, or adjusts the speech coding rate of the calling mobile station and the called mobile station to the same rate if the speech coding rates in the access information of the calling mobile station and the called mobile station are different.
Step 403, the BSC sends an instruction for performing communication switching to the BTS1, where the instruction carries an IWF table, and information of the IWF table, such as:
uplink speech frame Downlink speech frame
Voice frame of Msa Voice frame of MSb
In step 404, the BTS1 replaces the voice frame of MSa with the voice frame of MSb according to the IWF table, and the reverse process is similar, thereby implementing the internal voice loop back at BTS 1.
In the voice call between the terminal MSa and the terminal MSb in this embodiment, the voice loopback can be directly performed inside the BTS1 without routing to the BSC according to the IP address, so as to implement the voice frame communication exchange between the MSa and the MSb, thereby saving the transmission resources of the Abis interface from the BTS1 to the BSC, and simultaneously saving the transmission resources of the Ater interface between the BSC and the TC and the transmission bandwidth of the TC and CN sides.
In a second embodiment, as shown in fig. 5, fig. 5 is a schematic diagram of communication exchange performed at different BTSs, and the method in the second embodiment includes:
in step 501, the BSC determines to know that the calling mobile station MSa and the called mobile station MSb are from different BTSs, and the different BTSs may communicate with each other through an IP transport network, specifically, as shown in fig. 5, the MSa may be from BTS1, the MSb may be from BTS3, and the BTS1 and the BTS3 may communicate with each other through the IP transport network.
Step 502, the BSC determines to know that the speech coding rates in the access information of the calling mobile station and the called mobile station are the same, or adjusts the speech coding rate of the calling mobile station and the called mobile station to the same rate if the speech coding rates in the access information of the calling mobile station and the called mobile station are different.
Step 503, the BSC sends an instruction for performing communication switching to the BTS1, where the instruction carries an IWF table, and information of the IWF table, such as:
step 504, the BSC sends an instruction for performing communication switching to the BTS3, where the instruction carries an IWF table, and information of the IWF table, such as:
step 505, the BTS1 changes the destination IP of MSa voice frame from BSC IP0 to BTS3 IP3, the destination PORT from BSC PORT0 to BTS3 PORT3, the message is transmitted in IP network, and is routed to BTS3 directly according to destination IP address IP3, and the IP message is changed to downlink MSb voice frame in BTS3 for processing, the processing procedure in the opposite direction is similar, thereby realizing the voice frame communication exchange between MSa and MSb.
In the voice call between the two terminals MSa and MSb of this embodiment, the call can be directly switched between BTS1 and BTS3 without routing to BSC according to IP address, so as to implement voice frame communication exchange between MSa and MSb, thus saving transmission resources from BTS1 to Abis interfaces of BSC and BTS2 to BSC, and saving transmission resources of the Ater interfaces between BSC and TC and transmission bandwidth of TC and CN sides.
Third embodiment, as shown in fig. 6, fig. 6 is a schematic diagram of communication exchange performed at an IP convergence BTS, and the method in the third embodiment includes:
step 601, the BSC determines to know that the calling mobile station MSa and the called mobile station MSb are from different BTSs, and these different BTSs are in different IP transmission networks, but can perform transmission and interworking through an IP transmission convergence BTS, as shown in fig. 6 specifically, it may be: MSa from BTS1, MSb from BTS3, BTS1 and BTS3 may interwork via IP transport convergence BTSs.
Step 602, the BSC determines to know that the speech coding rates in the access information of the calling mobile station and the called mobile station are the same, or adjusts the speech coding rate of the calling mobile station and the called mobile station to the same rate if the speech coding rates in the access information of the calling mobile station and the called mobile station are different.
Step 603, the BSC sends an instruction for performing communication switching to the IP transmission convergence BTS, where the instruction carries an IWF table, and information of the IWF table, for example:
Figure GDA0000058985750000111
step 604, the voice frame of MSa transmits an IP data packet to the IP transmission convergence BTS through the IP PORT of BTS1, the destination IP of the IP data packet is IP0 of BSC, the destination PORT is PORT0 of BSC, an exchange route loop is performed at the IP transmission convergence BTS according to the IWF table, the destination IP of the IP data packet of MSa is replaced by IP3 of BTS3 from IP0 of BSC, the message is transmitted in IP network, is directly routed to BTS3 according to the destination IP address IP3, and is processed by the IP data packet changed into MSb in BTS3, the processing procedures in the opposite direction are similar, thereby realizing the communication exchange of the voice frame between MSa and MSb.
In the voice call of the three terminals MSa and MSb in this embodiment, the voice loopback can be directly performed among the BTS1, the IP convergence BTS and the BTS3 without routing to the BSC according to the IP address, so as to implement the voice frame communication exchange between MSa and MSb, thereby saving the transmission resource from the IP convergence BTS to the Abis interface of the BSC, and simultaneously saving the transmission resource from the Ater interface between the BSC and the TC and the transmission bandwidth at the TC and CN sides.
On the basis of the method provided by the embodiment of the present invention, the embodiment of the present invention provides a base station controller, as shown in fig. 7, including a BSC radio resource module 701, a BSC resource control module 702, and a BTS management module 703, wherein,
the BSC wireless resource module 701 is configured to send a communication switching request message to the BTS management module when it is known that the calling mobile station and the called mobile station are both from the same base station controller.
Whether the calling mobile station and the called mobile station are from the same BSC can be judged by TC or MSC. The determination method can be performed in the manner described in the above method.
The BTS management module 703 is configured to send a command for performing communication switching to a transmission convergence BTS in the BTS group when it is determined that the calling mobile station and the called mobile station are located in the same BTS group according to the communication switching request message.
The BSC wireless resource module 701 is further configured to adjust the speech coding rate of the calling mobile station and the called mobile station to the same speech coding rate before the transmission convergence BTS in the BTS group performs communication switching.
The scheme for adjusting the speech coding rate of the calling mobile station and the called mobile station to the same speech coding rate may be various, including: adjusting the voice coding rate of the called mobile station to the voice coding rate of the calling mobile station; or adjusting the voice coding rate of the calling mobile station to the voice coding rate of the called mobile station; or adjusting the voice coding rate of the calling mobile station and the called mobile station to the same voice coding rate in the intersection of the voice coding rates of the calling mobile station and the called mobile station.
A BSC resource control module 702, configured to release transmission resources of the Ater interface and transmission resources of the Abis interface to the transmission convergence BTS after the calling mobile station and the called mobile station perform communication switching in the transmission convergence BTS in the BTS group.
On the basis of the method provided by the embodiment of the present invention, an embodiment of the present invention further provides a base transceiver station, as shown in fig. 8, including:
a receiving unit 801, configured to receive an instruction for performing communication switching sent by the base station controller BSC.
The switching unit 802 is configured to perform communication switching on the calling mobile station and the called mobile station accessing the base transceiver station according to the communication switching instruction received by the receiving unit.
The base transceiver station further includes, according to the BTSs of different modes:
a first configuration unit 803A, configured to configure an Abis interface transmission time slot information table, where the transmission time slot information table is used to record circuit time slots of a calling mobile station and a called mobile station accessing to the base transceiver station. The switching unit 802 is further configured to loop back the circuit time slots of the calling mobile station and the called mobile station according to the transmission time slot information table configured by the first configuration unit.
A second configuration unit 803B, configured to configure an Abis interface network interworking function IWF table, where the IWF table is used to record the switching routes of the calling mobile station and the called mobile station accessing the base transceiver station. The switching unit 802 is further configured to change a destination IP and a destination port according to the IWF table configured by the second configuration unit, and loop back the switching routes of the calling mobile station and the called mobile station.
The base transceiver station further comprises:
a deleting unit 804, configured to delete the Abis interface transmission time slot information table or the network interworking function IWF table after the communication between the calling mobile station and the called mobile station is ended, and remove the timeslot loopback or the switch routing loopback between the calling mobile station and the called mobile station.
Finally, on the basis of the method provided by the embodiment of the present invention, an embodiment of the present invention further provides a base station subsystem, as shown in fig. 9, including:
the base station controller 910 is configured to send a command for performing communication switching to the transmission convergence BTS in the BTS group when it is determined that the calling mobile station and the called mobile station are in the same BTS group under the same base station controller BSC.
And a base transceiver station 920, configured to perform communication switching on a calling mobile station and a called mobile station accessing the base transceiver station according to the communication switching instruction from the base station controller.
The base station controller 910 is further configured to adjust the speech coding rates of the calling mobile station and the called mobile station to the same speech coding rate before the transmission convergence BTS in the BTS group performs communication switching.
The base transceiver station 920 is further configured to configure an Abis interface transmission time slot information table, where the transmission time slot information table is used to record circuit time slots of a calling mobile station and a called mobile station accessing the base transceiver station; and according to the configured transmission time slot information table, carrying out loopback on the circuit time slots of the calling mobile station and the called mobile station.
The base transceiver station 920 is further configured to configure an IWF table of an Abis interface network interworking function, where the IWF table is used to record the switching routes of a calling mobile station and a called mobile station accessing the base transceiver station; and changing a destination IP and a destination port according to the configured IWF table, and looping the switching routes of the calling mobile station and the called mobile station.
After the calling mobile station and the called mobile station perform communication exchange at the transmission convergence BTS in the BTS group,
the base station controller 910 is further configured to release transmission resources of the Ater interface and transmission resources to the transmission convergence BTS Abis interface.
After the communication between the calling mobile station and the called mobile station is finished,
the base transceiver station 920 is further configured to delete the Abis interface transmission time slot information table or the network interworking function IWF table, and remove the circuit time slot loopback or the switch routing loopback between the calling mobile station and the called mobile station.
The embodiment of the invention adopts the technical scheme that when a calling mobile station and a called mobile station are positioned under the same BSC, the BSC is used for judging whether the calling mobile station and the called mobile station are positioned in the same BTS group, if so, the BSC is used for further judging whether the voice coding rates in the access information of the calling mobile station and the called mobile station are the same, and if not, the voice coding rates of the calling mobile station and the called mobile station are adjusted to be the same; after the voice coding rates in the access information of the calling mobile station and the called mobile station are the same or the voice coding rates of the calling mobile station and the called mobile station are adjusted to be the same, the BSC sends a command for communication exchange to the transmission convergence BTS in the BTS group, and the transmission convergence BTS of the calling mobile station and the called mobile station in the BTS group performs communication exchange by configuring an Abis interface transmission time slot information table or an IWF (interworking function) table in the transmission convergence BTS according to BTSs in different modes. Therefore, the calling mobile station and the called mobile station from the same BTS group do not need to carry out coding/decoding on the voice frames through TC, thereby reducing the transmission delay during the conversation, improving the voice quality and saving TC resources; but also saves the transmission resources of the Abis interface and the Ater interface; meanwhile, the method is not limited by a core network, and can support the core network without modifying the core network, thereby saving the transmission bandwidth of the CN side.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (12)

1. A method of communication switching at a base transceiver station BTS, comprising:
when the calling mobile station and the called mobile station are judged to be in the same BTS group under the same base station controller BSC, the BSC adjusts the voice coding rate of the calling mobile station and the voice coding rate of the called mobile station to the same voice coding rate;
the transmission convergence BTS of the calling mobile station and the called mobile station in the BTS group performs the following communication exchange:
configuring an Abis interface transmission time slot information table in a transmission convergence BTS in the BTS group, and looping back a circuit time slot between the calling mobile station and the called mobile station according to the configured transmission time slot information table, or configuring an Abis interface network intercommunication function IWF table in the transmission convergence BTS in the BTS group, changing a target IP and a target port according to the configured IWF table, and looping back a switching route between the calling mobile station and the called mobile station.
2. The method of claim 1, wherein determining that the calling mobile station and the called mobile station are both from the same base station controller BSC comprises:
a Base Station Controller (BSC) at a calling mobile station side sends a global call identifier (GCR) of the calling mobile station to an uplink code converter (TC), wherein the GCR comprises a global BSC identification identifier of the Base Station Controller (BSC) at the calling mobile station side;
a downlink code converter TC receives the global calling identification GCR of the calling mobile station and sends the global calling identification GCR to a base station controller BSC at the side of the called mobile station;
and the base station controller BSC at the called mobile station side judges and learns that the calling mobile station and the called mobile station are both from the same base station controller BSC by using the global BSC identification mark of the base station controller BSC at the calling mobile station side in the GCR of the calling mobile station.
3. The method of claim 1, wherein determining that the calling mobile station and the called mobile station are both from the same base station controller BSC comprises:
a Base Station Controller (BSC) at a calling mobile station side sends a global calling identifier (GCR) of the calling mobile station to a Mobile Switching Center (MSC), wherein the GCR comprises a global BSC identification identifier of the Base Station Controller (BSC) at the calling mobile station side;
the mobile switching center MSC receives the GCR of the calling mobile station and sends the GCR to a base station controller BSC at the side of the called mobile station;
and the base station controller BSC at the called mobile station side judges and learns that the calling mobile station and the called mobile station are both from the same base station controller BSC by using the global BSC identification mark of the base station controller BSC at the calling mobile station side in the GCR of the calling mobile station.
4. The method according to claim 1, wherein after the calling mobile station and the called mobile station are communicatively switched at the transmission convergence BTSs in the BTS group, the method further comprises:
and the BSC releases the transmission resources of the Ater interface and the transmission resources of the Abis interface to the transmission convergence BTS.
5. The method of claim 4, wherein after the communication between the calling mobile station and the called mobile station is terminated, the method further comprises:
and the transmission convergence BTS deletes the Abis interface transmission time slot information table or the network interworking function IWF table and removes the circuit time slot loopback or the exchange routing loopback between the calling mobile station and the called mobile station.
6. A base station controller, comprising:
a BSC wireless resource module, which is used for adjusting the voice coding rate of the calling mobile station and the called mobile station to the same voice coding rate and sending a communication exchange request message to a BTS management module when knowing that the calling mobile station and the called mobile station are both from the same base station controller;
and the BTS management module is used for sending a command for carrying out communication exchange to the transmission convergence BTS in the BTS group when judging that the calling mobile station and the called mobile station are positioned in the same BTS group according to the communication exchange request message.
7. The base station controller of claim 6, wherein the base station controller further comprises:
and the BSC resource control module is used for releasing the transmission resource of the Ater interface and the transmission resource of the Abis interface to the transmission convergence BTS after the communication exchange of the calling mobile station and the called mobile station is carried out on the transmission convergence BTS in the BTS group.
8. A base transceiver station, comprising:
a receiving unit, configured to receive an instruction for performing communication switching sent by a base station controller BSC; and
the first configuration unit, or, the second configuration unit,
the first configuration unit is used for configuring an Abis interface transmission time slot information table, and the transmission time slot information table is used for recording circuit time slots of a calling mobile station and a called mobile station which are accessed to the base transceiver station;
the second configuration unit is used for configuring an IWF table of an Abis interface network interworking function, and the IWF table is used for recording the switching routes of a calling mobile station and a called mobile station which are accessed to the base transceiver station; a switching unit, configured to perform the following communication switching on a calling mobile station and a called mobile station accessing the base transceiver station according to the communication switching instruction received by the receiving unit: according to the transmission time slot information table configured by the first configuration unit, the circuit time slots of the calling mobile station and the called mobile station are looped back, or according to the IWF table configured by the second configuration unit, the destination IP and the destination port are changed, and the switching route of the calling mobile station and the called mobile station is looped back.
9. The base transceiver station of claim 8, further comprising:
and a deleting unit, configured to delete the Abis interface transmission time slot information table or the network interworking function IWF table after the communication between the calling mobile station and the called mobile station is ended, and remove the circuit time slot loopback or the switch routing loopback between the calling mobile station and the called mobile station.
10. A base station subsystem, comprising: a base station controller and a base transceiver station;
wherein the base station controller comprises: BSC wireless resource module and BTS management module;
the BSC wireless resource module is used for adjusting the voice coding rate of the calling mobile station and the called mobile station to the same voice coding rate and sending a communication switching request message to the BTS management module when the calling mobile station and the called mobile station are both from the same base station controller;
the BTS management module is used for sending a command for carrying out communication exchange to the transmission convergence BTS in the BTS group when judging that the calling mobile station and the called mobile station are positioned in the same BTS group according to the communication exchange request message;
wherein the base transceiver station comprises: a receiving unit; a first configuration unit, or a second configuration unit; a switching unit;
the receiving unit is used for receiving an instruction for communication exchange sent by a base station controller BSC;
the first configuration unit is used for configuring an Abis interface transmission time slot information table, and the transmission time slot information table is used for recording circuit time slots of a calling mobile station and a called mobile station which are accessed to the base transceiver station;
the second configuration unit is used for configuring an IWF table of an Abis interface network interworking function, and the IWF table is used for recording the switching routes of a calling mobile station and a called mobile station which are accessed to the base transceiver station;
the switching unit is configured to perform the following communication switching on the calling mobile station and the called mobile station accessing the base transceiver station according to the communication switching instruction received by the receiving unit: according to the transmission time slot information table configured by the first configuration unit, the circuit time slots of the calling mobile station and the called mobile station are looped back, or according to the IWF table configured by the second configuration unit, the destination IP and the destination port are changed, and the switching route of the calling mobile station and the called mobile station is looped back.
11. The base station subsystem of claim 10, wherein the base station controller further comprises: and the BSC resource control module is used for releasing the transmission resource of the Ater interface and the transmission resource of the Abis interface to the transmission convergence BTS after the communication exchange of the calling mobile station and the called mobile station is carried out on the transmission convergence BTS in the BTS group.
12. The base station subsystem of claim 10, wherein said base transceiver station further comprises: and a deleting unit, configured to delete the Abis interface transmission time slot information table or the network interworking function IWF table after the communication between the calling mobile station and the called mobile station is ended, and remove the circuit time slot loopback or the switch routing loopback between the calling mobile station and the called mobile station.
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)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200810110678XA CN101291538B (en) 2008-06-13 2008-06-13 Method for communication exchange in message receiving and sending station of base station, and subsystem of base station
PCT/CN2009/071866 WO2009149636A1 (en) 2008-06-13 2009-05-20 Method for communication switching in a base station transceiver station and the base station subsystem thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810110678XA CN101291538B (en) 2008-06-13 2008-06-13 Method for communication exchange in message receiving and sending station of base station, and subsystem of base station

Publications (2)

Publication Number Publication Date
CN101291538A CN101291538A (en) 2008-10-22
CN101291538B true CN101291538B (en) 2012-07-04

Family

ID=40035547

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200810110678XA Expired - Fee Related CN101291538B (en) 2008-06-13 2008-06-13 Method for communication exchange in message receiving and sending station of base station, and subsystem of base station

Country Status (2)

Country Link
CN (1) CN101291538B (en)
WO (1) WO2009149636A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101291538B (en) * 2008-06-13 2012-07-04 华为技术有限公司 Method for communication exchange in message receiving and sending station of base station, and subsystem of base station
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
CN102045871B (en) * 2009-10-23 2015-08-12 中兴通讯股份有限公司 Local switching communication method and system
CN101742546B (en) * 2009-11-27 2013-08-07 中兴通讯股份有限公司 Method and device for switching exchange modes
CN102238661B (en) * 2010-04-30 2015-06-03 中兴通讯股份有限公司 Switching system and method during local switch
CN102255686B (en) * 2010-05-20 2014-10-22 中兴通讯股份有限公司 Adaptive multi-rate codec (AMR) initial rate regulation method, device and system
CN102143544B (en) * 2010-11-02 2014-03-05 华为技术有限公司 Method, equipment and system for controlling rate of voice coding

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1143442A (en) * 1994-03-09 1997-02-19 诺基亚电信公司 Mobile communication system and call control method
CN1238078A (en) * 1996-11-14 1999-12-08 艾利森电话股份有限公司 Transporting user data over A-Bis and A-interfaces within mobile telecommunications network
CN1388712A (en) * 2001-05-30 2003-01-01 华为技术有限公司 Phonetic channel exchange method for calling adaptation in mobile communication system
US7209739B1 (en) * 2004-12-28 2007-04-24 Sprint Spectrum L.P. Method and system for processing calls within a local micro network

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101291538B (en) * 2008-06-13 2012-07-04 华为技术有限公司 Method for communication exchange in message receiving and sending station of base station, and subsystem of base station

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1143442A (en) * 1994-03-09 1997-02-19 诺基亚电信公司 Mobile communication system and call control method
CN1238078A (en) * 1996-11-14 1999-12-08 艾利森电话股份有限公司 Transporting user data over A-Bis and A-interfaces within mobile telecommunications network
CN1388712A (en) * 2001-05-30 2003-01-01 华为技术有限公司 Phonetic channel exchange method for calling adaptation in mobile communication system
US7209739B1 (en) * 2004-12-28 2007-04-24 Sprint Spectrum L.P. Method and system for processing calls within a local micro network

Also Published As

Publication number Publication date
CN101291538A (en) 2008-10-22
WO2009149636A1 (en) 2009-12-17

Similar Documents

Publication Publication Date Title
CN101291538B (en) Method for communication exchange in message receiving and sending station of base station, and subsystem of base station
US6061566A (en) Mobile communication system and call control method
TWI387386B (en) Method and apparatus for relaying calls
US7821990B2 (en) Method of transmitting service information, and radio system
JPH06502980A (en) Cellular radio systems that utilize a common radio backbone
US20020097693A1 (en) Mobile to mobile calls
CN101431812B (en) Business processing method, system and equipment for circuit commutative field
CN101754412B (en) Method, equipment and system for implementing local exchange for base station group in GSM (global system for mobile communications)
CN101635994B (en) Method for acquiring speech coding capacity of wireless network and realizing TrFO by core network
CA2623538C (en) Efficient sharing of mobile equipment identifiers
CN116830690A (en) Dynamic packet delay budget handling in quality of service
RU2452121C2 (en) Method for codec negotiation between wireless network and base network in mobile connection system
EP2536215B1 (en) System, method and base station subsystem for realizing handover in local switch
CN102137492B (en) Method and device for video processing telephone service in single-card double standby system
RU2496260C2 (en) Method, base station controller and base station subsystem for monitoring quality of service
CN101801046B (en) Method for establishing local exchange, core network equipment and base station subsystem
US20030054826A1 (en) Delivery of an incoming data call from a public switched telephone network to a mobile station
CN112073918B (en) Video group calling method and device in broadband trunking communication
CN111757276B (en) Voice format notification method and device
US20240298209A1 (en) Deterministic communication with time sensitive networking in a transport network
WO2004068810A1 (en) A method of global system for mobile communications network and code division multiple access network utilizing the same base station
KR101765895B1 (en) Apparatus and Method for Providing Ring Back Tone Service, Server for Providing Ring Back Tone and Driving Method Thereof
CN100471341C (en) Ability consultation between personal handphone and gateway in personal communication system
CN103096501A (en) Calling system, method and device based on femto base station system framework
CN101577947A (en) Call establishing method and switching method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120704

Termination date: 20180613

CF01 Termination of patent right due to non-payment of annual fee