WO2009149636A1 - Procédé de commutation d'une communication dans une station émettrice-réceptrice d'une station de base et son sous-système de station de base - Google Patents

Procédé de commutation d'une communication dans une station émettrice-réceptrice d'une station de base et son sous-système de station de base Download PDF

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Publication number
WO2009149636A1
WO2009149636A1 PCT/CN2009/071866 CN2009071866W WO2009149636A1 WO 2009149636 A1 WO2009149636 A1 WO 2009149636A1 CN 2009071866 W CN2009071866 W CN 2009071866W WO 2009149636 A1 WO2009149636 A1 WO 2009149636A1
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WO
WIPO (PCT)
Prior art keywords
mobile station
bts
bsc
calling mobile
called mobile
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PCT/CN2009/071866
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English (en)
Chinese (zh)
Inventor
刘绍峰
邹成钢
李国宏
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2009149636A1 publication Critical patent/WO2009149636A1/fr

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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

Definitions

  • the present invention relates to telecommunications communication technologies, and in particular, to a method for performing communication exchange between a Base Transceiver Station (BTS) and a Base Station Subsystem (BSS).
  • BTS Base Transceiver Station
  • BSS Base Station Subsystem
  • the base station subsystem BSS usually includes: a base transceiver station BTS, a base station controller (BSC) and/or a code converter (Transcoder, TC). ).
  • the BTS communicates with the mobile station (MS) via the Um wireless interface, and the TC is externally connected to the Mobile Switching Center (MSC) through the A interface.
  • MSC Mobile Switching Center
  • the BSC is connected to the BTS through the Abis interface, and through the Ater interface and the TC. Connected.
  • the BSS does not provide the voice service switching function.
  • the uplink voice frame is transmitted from the BTS to the BSC via the Abis interface, and after the BSC is internally exchanged, it is transmitted to the TC through the Ater interface.
  • the TC decodes the voice frame and transmits it through the A interface.
  • the MSC to the core network Core Network
  • the MSC to the core network is switched to the downlink voice frame on the CN side, and then transmitted to the TC through the A interface.
  • the downlink voice frame is encoded by the TC, it is transmitted to the BSC through the Ater interface. After internal exchange, it is transmitted to the BTS via the Abis interface.
  • the voice frame Since the voice frame has two TC codec conversions in the transmission, it will cause a large delay, reduce the voice quality, and increase the waste of the TC resource and the Ater interface transmission resource;
  • Embodiments of the present invention provide a method for performing communication exchange at a base transceiver station BTS and a base station subsystem for solving a communication exchange problem between a calling mobile station and a called mobile station in the same BTS group, which can save The transmission resources of the Abis interface and the Ater interface reduce the transmission delay during the call, improve the voice quality, and save the transmission bandwidth of the TC and the CN side.
  • a method for performing communication exchange at a base transceiver station BTS includes:
  • the transmission convergence BTS in the BTS group performs communication exchange between the calling mobile station and the called mobile station.
  • a base station controller includes:
  • a BSC radio resource module configured to send a communication exchange request message to the BTS management module when the calling mobile station and the called mobile station are located in the same base station controller BSC;
  • a base transceiver station includes:
  • a receiving unit configured to receive an instruction sent by the base station controller BSC to perform communication exchange between the calling mobile station and the called mobile station, where the calling mobile station and the called mobile station are located in the same BTS under the same BSC s;
  • a switching unit configured to perform communication exchange between the calling mobile station and the called mobile station according to the communication exchange instruction received by the receiving unit.
  • a base station subsystem includes:
  • a base station controller configured to: when the calling mobile station and the called mobile station are located in the same BTS group under the same base station controller BSC, send a call to the calling mobile station to the transmission aggregation BTS in the BTS group An instruction to exchange communication with the called mobile station;
  • the base transceiver station is configured to perform communication exchange between the calling mobile station and the called mobile station according to the communication exchange command from the base station controller.
  • the calling mobile station and the called mobile station are The transmission aggregation BTS in the BTS group performs communication exchange, so that the calling mobile station and the called mobile station from the same BTS group do not need to perform encoding/decoding for the voice frame through the TC, thereby reducing the transmission delay during the call.
  • the voice quality is improved, the TC resources are saved, and the transmission resources of the Abis interface and the Ater interface are saved.
  • the core network is not limited, and the core network can be supported without changing the core network, thereby saving the CN side. Transmission bandwidth.
  • FIG. 1 is a schematic diagram of a process of processing a voice frame of a pair of calling and called MSs in the prior art
  • FIG. 2 is a flowchart of a method for performing communication exchange in a BTS according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of one or more BTS situations in a same BTS group in a TDM manner
  • FIG. A schematic diagram of a BTS for communication exchange is a schematic diagram of communication exchange between different BTSs according to Embodiment 2 of the present invention
  • FIG. 6 is a schematic diagram of communication exchange in an IP transmission convergence BTS according to Embodiment 3 of the present invention
  • FIG. 7 is a base station controller according to an embodiment of the present invention; Functional module diagram;
  • FIG. 8 is a schematic structural diagram of a base transceiver station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a base station subsystem according to an embodiment of the present invention. detailed description
  • the calling mobile station and the called mobile station access the same BTS;
  • the calling mobile station and the called mobile station access different BTSs, and the different access BTSs are directly or indirectly connected to the same primary BTS;
  • the BTS accessed by one of the calling mobile station and the called mobile station is a primary BTS, and the BTS accessed by the other party is directly or indirectly connected to the primary BTS; wherein, the primary BTS Refers to the BTS directly connected to the BSC through the Abis interface;
  • the primary called mobile station is considered to be located in the same BTS group.
  • the transport convergence BTS may be the same access BTS of the calling mobile station and the called mobile station, or a primary BTS directly connected to the BSC, and one or more BTSs are connected by the transmission convergence BTS to form the same. BTS group.
  • the calling mobile station and the called mobile station access the same BTS;
  • the calling mobile station and the called mobile station access different BTSs, and the different access BTSs can communicate with each other through the IP transmission network;
  • the calling mobile station and the called mobile station access different BTSs, and the different access BTSs are in different IP transmission networks, but can communicate with each other through the same IP transmission convergence BTS;
  • the primary called mobile station is considered to be located in the same BTS group.
  • the transport convergence BTS can be the same connection between the calling mobile station and the called mobile station.
  • the transport convergence BTS can be the same connection between the calling mobile station and the called mobile station.
  • the BTS or different access BTSs that can communicate through the IP transmission network, or IP transmission aggregation BTS, one or more BTSs are connected by the transmission aggregation BTS to form the same BTS group.
  • the base transceiver station BTS and the base station controller BSC are mainly described by taking the GSM system as an example.
  • the base transceiver station and the base station controller have corresponding titles.
  • the base station is a NodeB
  • the base station controller is a radio network controller RNC.
  • the present invention is described by taking BTS and BSC as examples, but is not limited thereto.
  • FIG. 2 is a schematic diagram of a method for performing communication exchange in a BTS according to an embodiment of the present invention.
  • the method in this embodiment includes:
  • Step 201 Determine whether both the calling mobile station and the called mobile station are from the same base station controller BSC.
  • both the calling mobile station and the called mobile station are from the same BSC, proceed to step 202. 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.
  • the BSC uniquely identifies an MS terminal by using a Global Call Reference (GCR), which includes a Global BSC Identifier and a Local Call Reference, which are used to uniquely identify the BSC. And calls within the BSC.
  • GCR Global Call Reference
  • the method for judging whether the calling mobile station and the called mobile station are from the same BSC includes: mode 1, the call detection can be completed without relying on the MSC, and the transmission and detection of the GCR can be completed by the TC, and the specific detection process is as follows:
  • the TC of the upward BSC sends the GCR of the calling mobile station, the GCR includes a global BSC identification identifier;
  • the downlink TC receives the GCR of the calling mobile station and sends it to the BSC of the called mobile station side;
  • the BSC on the mobile station side judges the calling mobile station and the called mobile by using the global BSC identification identifier in the GCR of the calling mobile station Whether the stations are from the same BSC.
  • the MSC can be used to complete the call detection.
  • the BSC of the calling mobile station sends a GCR of the calling mobile station to the MSC, where the GCR information includes a global BSC identification identifier; the calling mobile station The GCR is received by the MSC and sent to the BSC of the called mobile station side; the BSC of the called mobile station side determines the calling mobile station and the called mobile by using the global BSC identification identifier in the GCR of the calling mobile station. Whether the station is from the same BSC.
  • 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, proceed to step 203, and if not located in the same BTS group, exit the communication switching process described in this embodiment.
  • FIG 3 shows various scenarios of the BTS in which the primary and secondary mobile stations are located in the same BTS group in the time division multiplexing TDM mode, including:
  • the calling mobile station and the called mobile station access the same BTS (case 1 or 4 or 5 as shown in the figure); or
  • the calling mobile station and the called mobile station access different BTSs, and the different access BTSs are directly or indirectly connected to the same primary BTS (as in the case of 2 or 3); or
  • the BTS accessed by the calling mobile station and the called mobile station side is a primary BTS, and the BTS accessed by the other party is directly or indirectly connected to the primary BTS (as in the case 6).
  • the first-level BTS refers to a BTS that is directly connected to the BSC through the Abis interface, and the BTS where the BTS of the primary called party is located in the BTS group is collectively referred to as a transmission and convergence BTS, that is, In the TDM mode, the transmission aggregation BTS may be the same access BTS of the primary and the called mobile station, or a primary BTS directly connected to the BSC, and one or more BTSs are connected by the transmission aggregation BTS to form the same BTS group. If one of the above situations is met, it is considered that the calling and called mobile stations are located in the same BTS group.
  • the BTSs in which the calling and called mobile stations are located in the same BTS group can also have various situations, including:
  • the calling mobile station and the called mobile station access the same BTS; or The calling mobile station and the called mobile station access different BTSs, and the different access BTSs communicate with each other through the IP transmission network; or
  • the calling mobile station and the called mobile station access different BTSs, and the different access BTSs are in different IP transmission networks, but can communicate with each other through the same IP transmission.
  • the BTS in which the BTS of the primary called party is located in the BTS group may be collectively referred to as a transmission aggregation BTS. That is, in the IP mode, the transmission aggregation BTS may be the same access BTS of the primary and the called mobile station. , or different access BTSs that can communicate through the IP transmission network, or IP transmission aggregation BTS. One or more BTSs are connected by the transmission aggregation BTS to form the same BTS group. If one of the above situations is met, the primary and the called mobile stations are considered to be located in the same BTS group.
  • Step 203 The BSC determines whether the voice coding rate in the access information of the calling mobile station and the called mobile station is the same. If the voice coding rate in the access information of the calling mobile station and the called mobile station is different, Then, proceed to step 204; if the voice coding rate in the access information of the calling mobile station and the called mobile station is the same, then the process proceeds to step 205.
  • Step 204 adjusting the speech coding rate of the calling mobile station and the called mobile station to the same speech coding rate.
  • the scheme for adjusting the voice coding rate of the calling mobile station and the called mobile station to the same voice 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; Alternatively, the voice coding rate of the calling mobile station may be adjusted to the voice coding rate of the called mobile station; or the voice coding rate of the calling mobile station and the called mobile station may be adjusted to the calling mobile station.
  • Step 205 The BSC sends an instruction for performing communication exchange to the transmission aggregation BTS in the BTS group.
  • Step 206 According to the communication exchange instruction, the calling mobile station and the called mobile station perform communication exchange in a transmission convergence BTS in the BTS group.
  • the communication convergence BTS in the BTS group for communication exchange may specifically include two situations, such as:
  • an Abis interface transmission slot information table is configured in the transmission convergence BTS, where the transmission slot information table records circuit slot information of the calling mobile station and the called mobile station, according to the configured transmission time.
  • the slot information table loops back the circuit slots of the calling mobile station and the called mobile station.
  • an Abis interface network interworking function (IFF) table is configured in the transmission aggregation BTS, where the IWF table records exchange routing information between the calling mobile station and the called mobile station, according to the configured IWF.
  • the table changes the destination IP and the destination port, and loops back the switched routes of the calling mobile station and the called mobile station.
  • Table 1 and Table 2 show the IWF table configured in the IP mode.
  • the IWF table can convert the uplink voice frame format to the IP packet format.
  • the downlink IP packet format can be converted to the voice frame format.
  • the speech frame format is converted to each other.
  • the method in the embodiment of the present invention may further include:
  • Step 207 The BSC translates the transmission resource of the Ater interface and the transmission resource of the Abis interface that is translated to the transmission convergence BTS.
  • the method of the embodiment of the present invention may further include:
  • Step 208 The transmission aggregation BTS removes the circuit slot loopback or the exchange route loopback between the calling mobile station and the called mobile station.
  • the loopback removal method may be: the BSC notifying the transmission aggregation BTS to delete the configured Abis interface transmission slot information table or the network interworking function IWF table, where the calling mobile station and the called party are moved by the transmission convergence BTS The circuit's time slot loopback or switch routing loopback is removed.
  • the BSC when the calling mobile station and the called mobile station are from the same BSC, the BSC firstly determines whether the calling mobile station and the called mobile station are located in the same BTS group. Determining, if the calling mobile station and the called mobile station are located in the same BTS group, determining, by the BSC, whether the voice coding rate in the access information of the calling mobile station and the called mobile station is the same, if Differently, the speech coding rates of the calling mobile station and the called mobile station are adjusted to the same rate.
  • the calling mobile station and the called mobile station may be in the The transmission aggregation BTS in the BTS group performs communication exchange.
  • the calling mobile station and the called mobile station from the same BTS group do not need to encode/decode the voice frame through the TC, thereby reducing the transmission delay during the call, improving the voice quality, and saving the TC resource; It also saves the transmission resources of the Abis interface and the Ater interface; at the same time, it can be supported without the restriction of the core network, and can be supported without changing the core network, thus saving the transmission bandwidth of the CN side.
  • the communication between the calling mobile station and the called mobile station in the BTS group for communication exchange can be performed in two modes: TDM mode and IP mode.
  • TDM mode Compared with the exchange in the TDM mode, the hybrid transmission mode of the IP bearer data service can realize the narrowband and broadband integrated transmission, which can greatly reduce the transmission construction and operation and maintenance cost of the operator.
  • IP mode IP
  • the first embodiment is a schematic diagram of the communication exchange between the same BTS in the IP mode.
  • the method in the first embodiment includes:
  • the BSC judges that the calling and called MSa and MSb are under the same BTS, as shown in Figure 4, and can be in the same BST1.
  • the BSC Determining, by the BSC, the speech coding in the access information of the calling mobile station and the called mobile station
  • the rates are the same, or if the speech coding rates in the access information of the calling mobile station and the called mobile station are not the same, the speech coding rate of the calling and called mobile stations is adjusted to the same rate.
  • the BSC sends an instruction for performing a communication exchange to the BTS1, where the instruction carries an IWF table, and the information of the IWF table, for example:
  • the BTS1 replaces the voice frame of the MSa with the voice frame of the MSb according to the IWF table, and the processing in the reverse direction is similar, thereby implementing internal voice loopback in the BTS 1.
  • the voice loopback can be performed not directly according to the IP address, but the voice loopback is directly performed in the BTS1, so that the communication of the voice frame between the MSa and the MSb is realized, thereby saving the BTS1 to
  • the transmission resources of the Abis interface of the BSC also save the transmission resources of the Ater interface of the BSC and the TC and the transmission bandwidth of the TC and CN side.
  • FIG. 5 is a schematic diagram of communication exchange between different BTSs, and the method of the second embodiment includes:
  • the BSC determines that the calling mobile station MSa and the called mobile station MSb are from different BTSs, and the different BTSs can communicate with each other through the IP transmission network.
  • the MSa may be from BTS1
  • the MSb is from BTS3, BTS1. It can communicate with the BTS3 through the IP transmission network.
  • the BSC determines that the voice coding rate in the access information of the calling mobile station and the called mobile station is the same, or if the voice coding rate in the access information of the calling mobile station and the called mobile station is not the same, The speech coding rate of the primary and secondary mobile stations is adjusted to the same rate.
  • the BSC sends an instruction for performing a communication exchange to the BTS1, where the instruction carries an IWF table, and the information of the IWF table, for example:
  • the information of the IWF table such as:
  • the destination IP address of the MSA voice frame is changed from the IP0 of the BSC to the IP3 of the BTS3, and the destination port is changed from the PORT0 of the BSC to the PORT3 of the BTS3, and the message is transmitted on the IP network, directly according to the destination IP address IP3.
  • the route is forwarded to the BTS3, and the IP packet is changed to the downlink MSb voice frame for processing in the BTS3, and the reverse direction processing is similar, thereby implementing the communication exchange of the voice frame between the MSa and the MSb.
  • the route can be exchanged between the BTS1 and the BTS3, and the communication frame of the voice frame between the MSa and the MSb is exchanged.
  • the transmission resources of the Abis interface from the BTS1 to the BSC and the BTS2 to the BSC are saved, and the transmission resources of the Ater interface of the BSC and the TC and the transmission bandwidth of the TC and CN side are also saved.
  • the third embodiment is a schematic diagram of the communication exchange in the IP convergence BTS.
  • the method in the third embodiment includes:
  • the BSC determines that the calling mobile station MSa and the called mobile station MSb are from different BTSs.
  • the different BTSs are in different IP transmission networks, but can communicate and transmit through the IP transmission aggregation BTS. As shown in FIG. 6, it can be: MSa comes from BTS1, MSb comes from BTS3, BTS1 and BTS3 can communicate with each other through IP transmission convergence BTS.
  • the BSC determines that the voice coding rate in the access information of the calling mobile station and the called mobile station is the same, or if the voice coding rate in the access information of the calling mobile station and the called mobile station is not the same, The speech coding rate of the primary and secondary mobile stations is adjusted to the same rate.
  • the BSC sends an instruction for performing a communication exchange to the IP transmission aggregation BTS, where the instruction carries an IWF table, and the information of the IWF table, for example: Voice frame user datagram protocol UDP/Internet Protocol IP
  • the voice frame of the MSA transmits the IP data packet to the IP transmission aggregation BTS through the IP port of the BTS1.
  • the destination IP address of the IP data packet is the IPO of the BSC, and the destination port is the PORT0 of the BSC, and is performed according to the IWF table at the IP transmission convergence BTS.
  • the routing loopback is exchanged, and the destination IP of the IP packet of the MSa is replaced by the IP0 of the BSC to the IP3 of the BTS3.
  • the packet is transmitted on the IP network, and is directly routed to the BTS3 according to the destination IP address IP3, and is changed to BTS3 in BTS3.
  • the MSb's IP data packet is processed, and the reverse direction processing is similar, thereby realizing the communication exchange of the voice frame between the MSa and the MSb.
  • the voice loopback can be directly performed between the BTS1, the IP convergence BTS, and the BTS3 according to the IP address, and the communication of the voice frame between the MSa and the MSb is realized. Therefore, the transmission resources of the IP convergence BTS to the Abis interface of the BSC are saved, and the transmission resources of the Ater interface of the BSC and the TC and the transmission bandwidth of the TC and CN side are also saved.
  • 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, where
  • the BSC radio resource module 701 is configured to send a communication exchange request message to the BTS management module when the calling mobile station and the called mobile station are located in the same base station controller.
  • Whether the calling mobile station and the called mobile station are from the same BSC, can be performed by the TC or by the MSC.
  • the BTS management module 703 is configured to: according to the performing the communication exchange request message, when the calling mobile station and the called mobile station are located in the same BTS group, send the to the transmission convergence BTS in the BTS group The calling mobile station and the called mobile station exchange instructions for communication.
  • the BSC radio resource module 701 is further configured to move the calling mobile station and the called party before the transmission convergence BTS in the BTS group exchanges communication between the calling mobile station and the called mobile station.
  • the speech coding rate of the station is adjusted to the same speech coding rate.
  • the scheme for adjusting the voice coding rate of the calling mobile station and the called mobile station to the same voice coding rate may be various, including: adjusting the voice coding rate of the called mobile station to the voice coding of the calling mobile station. Rate; or adjust the speech coding rate of the calling mobile station to the speech coding rate of the called mobile station; or adjust the speech coding rate of the calling mobile station and the called mobile station to the calling mobile station and the called mobile station voice The same speech coding rate in the intersection of the coding rates.
  • the BSC resource control module 702 is configured to: after the communication convergence BTS in the BTS group performs communication exchange between the calling mobile station and the called mobile station, release the transmission resource of the Ater interface and release the transmission resource to the transmission aggregation.
  • the transmission resource of the Abis interface of the BTS is configured to: after the communication convergence BTS in the BTS group performs communication exchange between the calling mobile station and the called mobile station, release the transmission resource of the Ater interface and release the transmission resource to the transmission aggregation.
  • the transmission resource of the Abis interface of the BTS is configured to: after the communication convergence BTS in the BTS group performs communication exchange between the calling mobile station and the called mobile station, release the transmission resource of the Ater interface and release the transmission resource to the transmission aggregation.
  • the embodiment of the present invention further provides a base station receiving and transmitting station, as shown in FIG. 8, including:
  • the receiving unit 801 is configured to receive, by the base station controller BSC, an instruction for performing communication exchange between the calling mobile station and the called mobile station, where the calling mobile station and the called mobile station are located in the same BTS group under the same BSC. Inside.
  • the switching unit 802 is configured to perform communication exchange between the calling mobile station and the called mobile station according to the communication exchange instruction received by the receiving unit.
  • the base transceiver station further includes:
  • the first configuration unit 803A is configured to configure an Abis interface transmission slot information table, where the transmission slot information table is used to record circuit time slots of the calling mobile station and the called mobile station.
  • the switching unit 802 is further configured to perform loopback on the circuit slots of the calling mobile station and the called mobile station according to the transmission slot information table configured by the first configuration unit.
  • the second configuration unit 803B is configured to configure an Abis interface network interworking function IWF table, where the IWF table is used to record the exchange route between the calling mobile station and the called mobile station.
  • the switching unit 802 is further configured to: change the destination IP and the destination port according to the IWF table configured by the second configuration unit, and perform loopback on the exchange route between the calling mobile station and the called mobile station.
  • the base transceiver station further includes:
  • the deleting unit 804 is 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 ends, and move the calling mobile station and the called party The path slot loopback or switch routing loopback between the stations is removed.
  • the 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: when the calling mobile station and the called mobile station are located in the same BTS group under the same base station controller BSC, send the call mobile to the transmission aggregation BTS in the BTS group.
  • the station and the called mobile station exchange instructions for communication.
  • the base transceiver station 920 is configured to perform communication exchange between the calling mobile station and the called mobile station accessing the base transceiver station according to the communication exchange command from the base station controller.
  • the base station controller 910 is further configured to: after the transmission convergence BTS in the BTS group exchanges communication between the calling mobile station and the called mobile station, perform voice coding of the calling mobile station and the called mobile station.
  • the rate is adjusted to the same speech coding rate.
  • the base transceiver station 920 is further configured to configure an Abis interface transmission slot information table, where the transmission slot information table is used to record a circuit of a calling mobile station and a called mobile station that access the base transceiver station a time slot; loopbacks the circuit slots of the calling mobile station and the called mobile station according to the configured transmission slot information table.
  • the base transceiver station 920 is further configured to configure an Abis interface network interworking function IWF table, where the IWF table is used to record a switched route between a calling mobile station and a called mobile station that accesses the base transceiver station;
  • the configured IWF table changes the destination IP address and the destination port, and loops back the switched routes of the calling mobile station and the called mobile station.
  • the base station controller 910 is further configured to translate the transmission resources of the Ater interface and the transmission resources of the transmission aggregation BTS Abis interface.
  • 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 loop or exchange circuit time slots between the calling mobile station and the called mobile station. The route loopback is removed.
  • the BSC When the calling mobile station and the called mobile station are located under the same BSC, the BSC first determines whether the calling mobile station and the called mobile station are located in the same BTS group. If the BCS group is located in the same BTS group, it is further determined by the BSC whether the voice coding rate in the access information of the calling mobile station and the called mobile station is the same. If the voice coding rate is not the same, the calling party moves.
  • the voice coding rate of the station and the called mobile station is adjusted to the same voice coding rate; the voice coding rate in the calling mobile station and the called mobile station access information is the same or the calling mobile station and the called party
  • the BSC sends an instruction for communication exchange to the transmission aggregation BTS in the BTS group, and the Abis interface transmission time slot is configured in the transmission convergence BTS according to the BTS of different modes.
  • the manner in which the information table or the network interworking function is an IWF table, and the transmission convergence of the calling mobile station and the called mobile station in the BTS group is implemented.
  • the BTS performs communication exchange.
  • the calling mobile station and the called mobile station from the same BTS group do not need to perform encoding/decoding for the voice frame through the TC, thereby reducing the transmission delay during the call, improving the voice quality, and saving the TC resource; It also saves the transmission resources of the Abis interface and the Ater interface; at the same time, it can be supported without the limitation of the core network, and can be supported without modifying the core network, thus saving the transmission bandwidth of the CN side.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un procédé de commutation de communication dans une station émettrice-réceptrice d'une station de base (BTS) et son sous-système de station de base. La présente invention permet de résoudre le problème de la commutation des communications entre une station mobile appelante et une station mobile appelée lorsque les deux stations se trouvent dans le même groupe de BTS. Le procédé comprend l'exécution de la commutation d'une communication entre la station mobile appelante et la station mobile appelée dans une BTS de convergence des transmissions d'un groupe de BTS, lorsque la station mobile appelante et la station mobile appelée sont jugées appartenir à un même groupe de BTS dépendant d'un même contrôleur de station de base (BSC) par le contrôleur de station de base (BSC). Le sous-système de station de base comprend un contrôleur de station de base et une station émettrice-réceptrice de station de base. Les modes de réalisation de la présente invention permettent à la station mobile appelante et à la station mobile appelée d'exécuter la commutation d'une communication dans la BTS de convergence des communications sans qu'un transcodeur TC effectue le codage ou le décodage des trames vocales.
PCT/CN2009/071866 2008-06-13 2009-05-20 Procédé de commutation d'une communication dans une station émettrice-réceptrice d'une station de base et son sous-système de station de base WO2009149636A1 (fr)

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CN101291538B (zh) * 2008-06-13 2012-07-04 华为技术有限公司 在基站收发信台进行通信交换的方法及基站子系统
CN101374355B (zh) * 2008-10-24 2013-06-05 华为技术有限公司 一种实现本地交换的方法和装置
CN101800911B (zh) 2009-02-06 2012-10-17 华为技术有限公司 实现本地交换的方法及系统
CN101820650B (zh) * 2009-02-27 2012-11-28 中兴通讯股份有限公司 一种动态使用Abis时隙资源的方法和系统
CN101860991B (zh) * 2009-04-13 2014-11-19 上海中兴软件有限责任公司 一种本地交换链路与非本地交换链路相互切换的方法
CN101868034B (zh) * 2009-04-15 2015-07-22 中兴通讯股份有限公司 一种本地交换的建立方法
CN102045871B (zh) * 2009-10-23 2015-08-12 中兴通讯股份有限公司 本地交换通信方法和系统
CN101742546B (zh) * 2009-11-27 2013-08-07 中兴通讯股份有限公司 一种交换模式转换的方法及装置
CN102238661B (zh) * 2010-04-30 2015-06-03 中兴通讯股份有限公司 一种本地交换时的切换系统及切换方法
CN102255686B (zh) * 2010-05-20 2014-10-22 中兴通讯股份有限公司 一种调整amr初始速率的方法、装置和系统
CN102143544B (zh) * 2010-11-02 2014-03-05 华为技术有限公司 控制语音编码速率的方法、设备及系统

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