WO2011057449A1 - Procédé et système pour réduire des interférences de canaux de commande entre des stations mobiles - Google Patents

Procédé et système pour réduire des interférences de canaux de commande entre des stations mobiles Download PDF

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Publication number
WO2011057449A1
WO2011057449A1 PCT/CN2009/074940 CN2009074940W WO2011057449A1 WO 2011057449 A1 WO2011057449 A1 WO 2011057449A1 CN 2009074940 W CN2009074940 W CN 2009074940W WO 2011057449 A1 WO2011057449 A1 WO 2011057449A1
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WO
WIPO (PCT)
Prior art keywords
mobile station
frame mapping
network side
classmark
capability
Prior art date
Application number
PCT/CN2009/074940
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English (en)
Chinese (zh)
Inventor
王欣晖
李靖
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to PCT/CN2009/074940 priority Critical patent/WO2011057449A1/fr
Publication of WO2011057449A1 publication Critical patent/WO2011057449A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties

Definitions

  • the present invention relates to techniques for reducing control channel interference between mobile stations, and more particularly to a method and system for reducing control channel interference between mobile stations. Background technique
  • FIG. 1 is a schematic diagram of a network architecture of an existing GSM.
  • a network architecture of a Global System for Mobile Communication includes a core network, a Base Station Controller (BSC), and a base station. (BTS, Base Station), wherein the base station controller and the base station can be collectively referred to as a base station subsystem (BSS Base Station Subsystem).
  • BSC Base Station Controller
  • BTS Base Station
  • the interface between the core network and the BSC is called the A interface.
  • the interface between the BSC and the BTS is called the Abis interface.
  • the interface between the BTS and the mobile station (MS, Mobile Station) is called the Um interface.
  • the core network, the BSC and the BTS work together. , to provide complete mobile voice service capabilities to the MS.
  • FIG. 2 is a schematic diagram of a flat GSM network.
  • the flat GSM network mainly includes a core network and an enhanced base station (eBTS, Enhanced Base Station).
  • eBTS enhanced Base Station
  • the two layers wherein the interface between the core network and the enhanced base station is an A interface, and the interface between the enhanced base station and the mobile station is an Um interface, and a new interface is defined between the enhanced base stations, which is called an enhanced base station.
  • the interface can be used for interaction between the enhanced base station and the enhanced base station.
  • TDMA Time Division Multi Access
  • FR Full Rate
  • HR Half Rate
  • VSAM Voice Services over Adaptive Multi-user channels on One Slot
  • Figure 3 is a schematic diagram of four mobile stations multiplexing HR channel resources in GSM mode. As shown in Figure 3, in the traditional GSM mode, two HR users, one user 1, user 2, multiplex the HR carrier frequency 1, and the other two HRs. User one user 3, user 4 multiplexes HR carrier frequency 2. When the HR carrier frequency 1 and the HR carrier frequency 2 are different frequencies, the SACCH channels between users do not interfere with each other.
  • Multi-purpose in adaptive single-slot In the channel voice mode, four HR users are shared into one time slot, then HR carrier frequency 1 and HR carrier frequency 2 are the same frequency, they use the same SACCH frame mapping method (traditional frame mapping method), user 1 and The SACCH channels of User 3, User 2 and User 4 will become co-channel interference with each other, and since the SACCH always uses the maximum power transmission, the interference problem between the control channels of different mobile stations will be further aggravated.
  • FIG. 4 is a schematic diagram of four mobile stations multiplexing HR channel resources by using offset SACCH frame mapping in GSM mode.
  • HR user-user 3 and user 4 use a technique called offset SACCH frame mapping.
  • the technique maps the user in the adaptive single-slot multi-user channel voice subcarrier frequency 1 to the SACCH frame of the user in the adaptive single-slot multi-user channel voice subcarrier frequency 2 to different time slots, that is, not in the same It always appears, so it is impossible to form interference with each other.
  • the corresponding traffic channel (TCH, Traffic Channel) of the user will turn off the transmit power, and it is in the same adaptive single-slot.
  • the SACCH of other users of the multi-user channel voice channel will not be interfered, thereby improving the performance of the SACCH channel and ensuring the communication quality.
  • the traditional frame mapping method is the only frame mapping method.
  • the traditional mobile station supports the mapping method, and the GSM network can only command new mobile stations that support the offset SACCH frame mapping method to use the partial mapping method.
  • the SACCH frame mapping method is moved, so a method is needed to enable the network side to know whether the mobile station has the offset SACCH frame mapping capability. Summary of the invention
  • the main object of the present invention is to provide a method and system for reducing control channel interference between mobile stations, which can reduce the difference between different mobile stations after using the adaptive single-slot multi-user channel voice technology in the GSM network. Control channel interference.
  • a method for reducing control channel interference between mobile stations comprising:
  • the mobile station reports to the network side whether the capability of the offset slow auxiliary control channel SACCH frame mapping is supported, and the network side performs the control of the offset SACCH frame mapping on the mobile station according to the capability reported by the mobile station.
  • the mobile station transmits its information supporting the offset SACCH frame mapping capability to one of the mobile station Classmark 3 information to the network side.
  • the mobile station encapsulates Classmark 3 information carrying information supporting the offset SACCH frame mapping capability in a classmark change message, and sends the information to the network side.
  • the classmark change message is sent to the network side, including:
  • the mobile station sends the classmark change message directly to the network side; or, after receiving the classmark enquiry message sent by the network side, the mobile station sends the classmark change message to the network side.
  • the Classmark 3 information of the classmark change message to the network side does not include the cell supporting the offset SACCH frame mapping capability.
  • the mobile station transmits information of its ability to support offset SACCH frame mapping to one of the mobile station Classmark 2 information to the network side.
  • the Classmark 2 information carrying the information supporting the offset SACCH frame mapping capability is encapsulated in the CM Service Request message and sent to the network side;
  • the Classmark 2 information carrying the information supporting the offset SACCH frame mapping capability is encapsulated in a paging response message and sent to the network side.
  • the Classmark 2 information of the CM Service Request message sent to the network side does not include the cell supporting the offset SACCH frame mapping capability. >3 ⁇ 4 of the paging response message on the network side
  • the Classmark 2 information does not include cells that support the offset SACCH frame mapping capability.
  • the controlling, by the mobile station, the offset SACCH frame mapping comprises: the network side sharing a one time slot of the mobile station supporting the offset SACCH frame mapping capability, the SACCH located in the same carrier frequency The frames are assigned to different time slots and the corresponding mobile station is notified.
  • a system for reducing control channel interference between mobile stations comprising a reporting unit, a receiving unit, and a control unit, wherein:
  • the upper unit located in the mobile station, is configured to support the ability to offset the SACCH frame mapping to the network side;
  • a receiving unit located at the network side, configured to receive capability information reported by the mobile station to support offset SACCH frame mapping
  • control unit located at the network side, configured to perform control on offsetting the SACCH frame mapping of the mobile station according to the capability reported by the mobile station.
  • the reporting unit sends the information that the mobile station supports the offset SACCH frame mapping capability to the network side as one of the mobile station Classmark 3 information.
  • the reporting unit encapsulates Classmark 3 information carrying information supporting the offset SACCH frame mapping capability in a classmark change message, and sends the information to the network side.
  • the reporting unit directly reports the classmark change message to each side of the network
  • the reporting unit reports the classmark change message to the network providing side.
  • the upper 4 unit does not include the capability of supporting the offset SACCH frame mapping in the Classmark 3 information of the classmark change message on the network side.
  • the upper unit will support the mobile station with the ability to offset the SACCH frame mapping capability
  • the information is sent to the network side as a cell in the Classmark 2 information of the mobile station.
  • the reporting unit when the mobile station is the calling party, the reporting unit encapsulates the Classmark 2 information carrying the information supporting the offset SACCH frame mapping capability in the CM Service Request message, and sends the information to the network side;
  • the reporting unit When the mobile station is used as the called party, the reporting unit encapsulates the Classmark 2 information carrying the information supporting the offset SACCH frame mapping capability in the paging response message, and sends the information to the network providing side.
  • the upper 4 unit does not include the support offset SACCH frame mapping in the Classmark 2 information of the CM Service Request message on the network side.
  • the capability of the cell, the Classmark 2 information of the paging response message reported to the network side does not include the cell supporting the offset SACCH frame mapping capability.
  • control unit allocates SACCH frames in the same carrier frequency to the different time slots of the mobile station supporting the offset SACCH frame mapping capability of one slot, and notifies the corresponding mobile station.
  • the mobile station reports its support for the offset SACCH frame mapping to the network side, so that the network side can control the offset SACCH frame mapping of the mobile station according to whether the mobile station supports the offset SACCH frame mapping capability.
  • the invention greatly reduces the interference between the user SACCH in the adaptive single-slot multi-user carrier frequency and improves the overall communication performance of the GSM network.
  • Figure 1 is a schematic diagram of the architecture of an existing GSM network
  • Figure 2 is a schematic diagram of the architecture of a flat GSM network
  • 3 is a schematic diagram of multiplexing HR channel resources by four mobile stations in GSM mode
  • 4 is a schematic diagram of four mobile stations multiplexing HR channel resources by using offset SACCH frame mapping in GSM mode;
  • FIG. 5 is a flowchart of Embodiment 1 of a method for reducing control channel interference between mobile stations according to the present invention
  • Embodiment 6 is a flow chart of Embodiment 2 of a method for reducing control channel interference between mobile stations according to the present invention
  • Embodiment 7 is a flow chart of Embodiment 3 of a method for reducing control channel interference between mobile stations according to the present invention.
  • FIG. 8 is a schematic structural diagram of a system for reducing control channel interference between mobile stations according to the present invention.
  • the mobile station can use its capability information to support offset SACCH frame mapping as a cell of Class 3 (Classmark 3) when the call is established.
  • Classmark 3 is encapsulated in the classmark change message and reported to the base station subsystem (network side). The following details how this example reduces control channel interference between mobile stations.
  • FIG. 5 is a flow chart of Embodiment 1 of a method for reducing control channel interference between mobile stations according to the present invention. As shown in FIG. 5, the method for reducing control channel interference between mobile stations in this example includes the following steps:
  • Step 501 The mobile station sends its own capability information for supporting the offset SACCH frame mapping to the base station subsystem by using a classmark change message.
  • the capability information of the offset SACCH frame mapping is supported as a cell of the mobile station class 3 (Classmark 3), and the classmark 3 is encapsulated in the classmark change message during the early class label sending process during call setup.
  • Base station subsystem The mobile station sends its own capability information for supporting the offset SACCH frame mapping to the base station subsystem by using a classmark change message.
  • the capability information of the offset SACCH frame mapping is supported as a cell of the mobile station class 3 (Classmark 3), and the classmark 3 is encapsulated in the classmark change message during the early class label sending process during call setup.
  • Base station subsystem Base station subsystem.
  • Step 502 The base station subsystem learns, according to the support capability of the offset SACCH frame mapping function in the classmark change message reported by the mobile station, the mobile station's support for the offset SACCH frame mapping function.
  • the base station subsystem considers the mobile The station does not support the offset SACCH frame mapping function.
  • the method of the present invention will support mobile stations with the ability to offset SACCH frame mapping while also being compatible with mobile stations that do not support the ability to offset SACCH frame mapping.
  • the manner in which the mobile station reports the support capability information for supporting the offset SACCH frame mapping may be any one or combination of the following:
  • the independent cell is used to directly indicate that the mobile station supports offset SACCH frame mapping capability
  • the mobile station In the capability level of the mobile station, as long as the mobile station has a capability level to support the offset SACCH frame mapping capability, the mobile station has the ability to support offset SACCH frame mapping.
  • Step 503 The base station subsystem performs control of offset SACCH frame mapping on the mobile station according to the capability reported by the mobile station.
  • the base station subsystem allocates the SACCH frames in the same carrier frequency of the mobile station supporting the offset SACCH frame mapping capability of one slot to different time slots, and maps the SACCH frames allocated for the respective mobile stations.
  • the gap resource is notified to each mobile station.
  • the Mobile Switching Center can send a Classmark request message to the base station subsystem system to the mobile station.
  • the base station subsystem system After receiving the Classmark request message, the base station subsystem system receives the Classmark request message.
  • Base station subsystem Sending a classmark enquiry message to the mobile station, and after the mobile station ⁇ : to the classmark enquiry message, the capability information for supporting the offset SACCH frame mapping is used as a cell of the mobile station Classmark 3, and is given by the classmark change message.
  • the base station subsystem system After receiving the Classmark change message, the base station subsystem system knows the mobile station's support for the offset SACCH frame mapping function, and then the base station subsystem sends a classmark update message to the MSC to support the mobile station to offset the SACCH frame mapping capability. The situation is reported to the MSC. The following detailed description of how this example reduces control channel interference between mobile stations.
  • Embodiment 2 is a flow chart of Embodiment 2 of a method for reducing control channel interference between mobile stations according to the present invention As shown in FIG. 6, the method for reducing control channel interference between mobile stations in this example includes the following steps:
  • Step 601 In the dedicated mode, the MSC can control a specific mobile station to send a Classmark request message to the base station subsystem system.
  • Step 602 After receiving the Classmark request message, the base station subsystem sends a classmark enquiry message to the mobile station.
  • Step 603 After receiving the classmark enquiry message, the mobile station uses the capability information of the offset SACCH frame mapping as a cell of the mobile station Classmark 3, and encapsulates the Classmark 3 in the classmark change message by sending a classmark change message.
  • the mobile station supports the capability information of the offset SACCH frame mapping on the base station subsystem.
  • the manner in which the mobile station reports the support capability information for supporting the offset SACCH frame mapping may be any one or combination of the following:
  • the independent cell is used to directly indicate that the mobile station supports offset SACCH frame mapping capability
  • the mobile station In the capability level of the mobile station, as long as the mobile station has a capability level to support the offset SACCH frame mapping capability, the mobile station has the ability to support offset SACCH frame mapping.
  • Step 604 After receiving the Classmark change message, the base station subsystem system knows the mobile station's support for the offset SACCH frame mapping capability. When the mobile station does not report the offset SACCH frame mapping capability, the base station subsystem considers that The mobile station does not support the offset SACCH frame mapping function. The base station subsystem then sends a classmark update message to the MSC, which supports the mobile station's ability to offset the SACCH frame mapping capability by 3 ⁇ 4 ⁇ 8.
  • Step 605 The base station subsystem performs control of offset SACCH frame mapping on the mobile station according to the capability reported by the mobile station.
  • the base station subsystem allocates SACCH frames in the same carrier frequency of the mobile station supporting the offset SACCH frame mapping capability of one slot to different time slots, and will be used for each corresponding mobile station.
  • the time slot resources of the assigned SACCH frame mapping are notified to each mobile station.
  • FIG. 7 is a flow chart of Embodiment 3 of a method for reducing control channel interference between mobile stations according to the present invention. As shown in FIG. 7, the method for reducing control channel interference between mobile stations in this example includes the following steps:
  • Step 701 When transmitting the full layer three message to the base station subsystem, the mobile station sends the information supporting the offset SACCH frame mapping capability to the base station subsystem. If the mobile station is the calling party, the CM Service Request message in the full layer three message is reported to the base station subsystem. If the mobile station is the called party, the mobile station is sent to the base station through the paging response message in the full layer three message. system.
  • the mobile station encapsulates the capability information of the offset SACCH frame mapping as a cell of the mobile station Classmark 2, and encapsulates the Classmark 2 in the CM Service Request message or the paging response message, by sending a CM Service Request message or paging
  • the response message reports the capability information of the mobile station supporting the offset SACCH frame mapping to the base station subsystem.
  • the manner in which the mobile station reports the support capability information for supporting the offset SACCH frame mapping may be any one or combination of the following:
  • the independent cell is used to directly indicate that the mobile station supports offset SACCH frame mapping capability
  • the mobile station In the capability level of the mobile station, as long as the mobile station has a capability level to support the offset SACCH frame mapping capability, the mobile station has the ability to support offset SACCH frame mapping.
  • Step 702 The base station subsystem learns the support of the mobile station for the offset SACCH frame mapping function according to the support capability of the offset SACCH frame mapping function carried in the full layer three message reported by the mobile station. When the mobile station does not report the offset SACCH frame mapping capability, the base station subsystem considers that the mobile station does not support the offset SACCH frame mapping capability.
  • Step 703 The base station subsystem performs control of offset SACCH frame mapping on the mobile station according to the capability reported by the mobile station.
  • the base station subsystem allocates the SACCH frames in the same carrier frequency of the mobile station supporting the offset SACCH frame mapping capability of one slot to different time slots, and maps the SACCH frames allocated for the respective mobile stations.
  • the gap resource is notified to each mobile station.
  • the mobile station can inform the base station subsystem of its own support capability for the offset SACCH frame mapping, so as to enable the base station subsystem to know whether the mobile station supports the offset SACCH frame mapping capability.
  • the information can be used to control the offset SACCH frame mapping of the mobile station according to whether the mobile station has the offset SACCH frame mapping capability, which reduces the interference between the mobile station SACCH and improves the communication performance of the GSM.
  • FIG. 8 is a schematic structural diagram of a system for reducing control channel interference between mobile stations according to the present invention.
  • the system for reducing control channel interference between mobile stations includes a reporting unit 80, a receiving unit 81, and a control unit 82.
  • the reporting unit 80 is located in the mobile station, and is configured to report whether the capability of the offset SACCH frame mapping is supported to the network side.
  • the receiving unit 81 is located at the network side, and is configured to receive whether the mobile station reports the offset SACCH frame mapping.
  • the capability information is located on the network side, and is configured to perform control of offset SACCH frame mapping on the mobile station according to the capability reported by the mobile station.
  • the upper unit 80 sends the information that the mobile station supports the offset SACCH frame mapping capability to one of the mobile station Classmark 3 information to the network side.
  • the "3 ⁇ 4 unit 80" encapsulates the Classmark 3 information carrying the information supporting the offset SACCH frame mapping capability in the classmark change message, and sends the information to the network side.
  • the mobile station does not support the offset SACCH frame.
  • the Classmark 3 information of the classmark change message reported by the reporting unit 80 to the network side does not include a cell that supports the offset SACCH frame mapping capability.
  • the upper unit 80 sends the information of the mobile station's ability to support the offset of the SACCH frame as a cell in the mobile station Classmark 2 information to the network side.
  • the reporting unit 80 will carry the support offset.
  • the Classmark 2 information of the information of the SACCH frame mapping capability is encapsulated in the CM Service Request message and sent to the network side.
  • the reporting unit 80 will carry the information supporting the offset SACCH frame mapping capability.
  • the Classmark 2 information is encapsulated in a paging response message and sent to the network side.
  • the upper unit 80 does not include a letter supporting the offset SACCH frame mapping capability in the Classmark 2 information of the CM Service Request message on the network side.
  • the Classmark 2 information of the paging response message reported to the network side does not include a cell that supports the offset SACCH frame mapping capability.
  • the control unit 82 allocates SACCH frames located in the same carrier frequency to the mobile stations supporting the offset SACCH frame mapping capability of one slot, and notifies the corresponding mobile station.
  • the system for reducing control channel interference between mobile stations shown in FIG. 8 is designed to implement the foregoing method for reducing control channel interference between mobile stations, and the processing in the system shown in FIG.
  • the function of the unit can be understood by referring to the related description in the foregoing method for reducing control channel interference between mobile stations.
  • the functions of each processing unit can be implemented by a program running on a processor, or can be realized by a specific logic circuit.

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

Abstract

La présente invention concerne un procédé permettant de réduire des interférences de canaux de commande entre des stations mobiles (MS). Le procédé inclut les étapes suivantes : la station mobile MS signale à la partie réseau si la station mobile MS prend en charge ou non une capacité de mappage de trame de canal de commande associé à faible débit (SACCH) décalé ; la partie réseau effectue une commande de mappage de trame de canal SACCH décalé sur la station mobile MS en fonction de la capacité signalée par la station mobile MS. La présente invention concerne également un système permettant de réduire des interférences de canaux de commande entre des stations mobiles. Le système comprend : une unité de signalisation, qui est située dans la station mobile MS et qui est utilisée pour signaler à la partie réseau si une capacité de mappage de trame de canal SACCH décalé est prise en charge ou non ; une unité de réception, qui est située dans la partie réseau et qui est utilisée pour recevoir les informations, signalées par la station mobile MS, indiquant si la capacité de mappage de trame de canal SACCH décalé est prise en charge ou non ; une unité de commande, qui est située dans la partie réseau et qui est utilisée pour effectuer une commande de mappage de trame de canal SACCH décalé sur la station mobile MS en fonction de la capacité signalée par la station mobile MS. La présente invention réduit fortement les interférences entre les canaux SACCH d'utilisateurs de fréquences adaptatives de porteuses pour utilisateurs multiples sur une tranche de temps, et elle améliore les performances globales de communication du réseau du système mondial de communications mobiles (GSM).
PCT/CN2009/074940 2009-11-13 2009-11-13 Procédé et système pour réduire des interférences de canaux de commande entre des stations mobiles WO2011057449A1 (fr)

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PCT/CN2009/074940 WO2011057449A1 (fr) 2009-11-13 2009-11-13 Procédé et système pour réduire des interférences de canaux de commande entre des stations mobiles

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PCT/CN2009/074940 WO2011057449A1 (fr) 2009-11-13 2009-11-13 Procédé et système pour réduire des interférences de canaux de commande entre des stations mobiles

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101018204A (zh) * 2007-02-09 2007-08-15 Ut斯达康通讯有限公司 支持双向快速用户定义分组信道的phs通信系统
WO2009117577A1 (fr) * 2008-03-19 2009-09-24 Interdigital Patent Holdings, Inc. Signalisation pour une opération où de multiples utilisateurs réutilisent un seul intervalle de temps (muros) dans un gsm

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101018204A (zh) * 2007-02-09 2007-08-15 Ut斯达康通讯有限公司 支持双向快速用户定义分组信道的phs通信系统
WO2009117577A1 (fr) * 2008-03-19 2009-09-24 Interdigital Patent Holdings, Inc. Signalisation pour une opération où de multiples utilisateurs réutilisent un seul intervalle de temps (muros) dans un gsm

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* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project; Technical Specification Group GERAN; Circuit Switched Voice Capacity Evolution for GSM/EDGE Radio Access Network (GERAN) (Release 8)", 3GPP TR 45.914 V8.2.0, September 2009 (2009-09-01) *
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