WO2011057451A1 - Procédé et système pour qu'un sous-système de station de base récupère la capacité de prise en charge de mappage de trames d'une station mobile - Google Patents

Procédé et système pour qu'un sous-système de station de base récupère la capacité de prise en charge de mappage de trames d'une station mobile Download PDF

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Publication number
WO2011057451A1
WO2011057451A1 PCT/CN2009/074943 CN2009074943W WO2011057451A1 WO 2011057451 A1 WO2011057451 A1 WO 2011057451A1 CN 2009074943 W CN2009074943 W CN 2009074943W WO 2011057451 A1 WO2011057451 A1 WO 2011057451A1
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WO
WIPO (PCT)
Prior art keywords
frame mapping
support capability
capability information
msc
offset
Prior art date
Application number
PCT/CN2009/074943
Other languages
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/CN2009/074943 priority Critical patent/WO2011057451A1/fr
Publication of WO2011057451A1 publication Critical patent/WO2011057451A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link

Definitions

  • the present invention relates to the field of mobile communications, and in particular to a method and system for a base station subsystem to acquire a frame mapping support capability of a mobile terminal. Background technique
  • GSM Global System for Mobile Communications
  • BSC Base Station Controller
  • BS Base Station
  • BSS Base Station Subsystem
  • 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 terminal (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.
  • the interface diagram is shown in Figure 2.
  • the flat GSM network mainly includes two layers: the core network and the Enhanced Base Station (eBTS).
  • the interface between the core network and the eBTS is the A interface
  • the interface between the eBTS and the MS is the Um interface.
  • a new interface is defined between the eBTSs: an inter-eBTS interface for the interaction between the eBTS and the eBTS.
  • HSPA high-speed packet access technology
  • LTE Long Term Evolution
  • HSPA+ High-Speed Packet Access +
  • LTE-language operation will enable operators to dynamically share limited spectrum resources in different wireless technologies (such as GSM, HSPA+, LTE, etc.).
  • HSPA+ or LTE accounted for With most of the spectrum resources, GSM occupies a small portion of the spectrum resources, but the number of GSM users has not decreased drastically. This has caused the GSM network to provide voice services to these users with relatively less spectrum resources, thus posing a huge challenge to the traditional GSM technology.
  • the traditional GSM is a Time Division Multi Access (TDMA) system
  • TDMA Time Division Multi Access
  • TS Time Slot
  • FR Full Rate
  • HR Half Rate
  • VAMOS Voice Services over Adaptive Multi-user channels on One Slot
  • VAMOS technology allows two FR voice users or four HR voice users to be carried simultaneously on a single TS, thereby increasing the support of the voice capacity of the entire GSM network without requiring additional spectrum resources.
  • control channel such as the Slow Associated Control Channel (SACCH)
  • SACCH Slow Associated Control Channel
  • the transmission of the control channel may cause problems. This will have a big impact on the communication between the MS and the BTS, and even cause dropped calls.
  • the offset SACCH (Shifted-SACCH) technique has appeared.
  • VAMOS subchannel 2 users u3, u4 use partial bias A technique for shifting SACCH frame mapping, which causes VAMOS subchannel 1 users (ul, u2) and SACCH frames (S) of VAMOS subchannel 2 users (u3, u4) not to appear at the same time, therefore, two VAMOS subchannel users
  • the SACCH does not cause interference.
  • DTX discontinuous transmission
  • TCH traffic channel
  • Co-channel interference improves SACCH performance and ensures communication quality.
  • the traditional frame mapping mode is the only frame mapping mode.
  • the traditional MS supports the mapping mode, and the GSM network can only command the MSs that support the offset SACCH frame mapping mode to use the offset SACCH frame mapping mode.
  • the target BSS cannot know the support capability of the handover MS for the offset SACCH frame mapping mode, so that the offset SACCH frame mapping mode cannot be used for the current handover process of the MS.
  • the main purpose of the present invention is to provide a method and system for a base station subsystem to obtain a frame mapping support capability of a mobile terminal.
  • the target BSS can know whether the current MS supports the offset. SACCH frame mapping.
  • the present invention provides a method for a base station subsystem to obtain a frame mapping support capability of a mobile terminal, the method comprising:
  • the mobile terminal MS reports the frame mapping support capability information to the mobile switching center MSC; the MSC sends the frame mapping support capability information to the target base station subsystem BSS of the MS handover.
  • the MS reports the frame mapping support capability information to the MSC, specifically:
  • the MS adds the frame mapping support capability information to the source BSS of the MS handover;
  • the source BSS reports the frame mapping capability information to the MSC.
  • the MSC sends the frame mapping support capability information to the target BSS, specifically:
  • the MSC carries the frame mapping support capability information in an indicator, or a capability level parameter of the user equipment, and sends the message to the target BSS through a handover request message or a special frame mapping capability notification message.
  • the frame mapping support capability information includes: supporting an offset slow auxiliary control channel SACCH frame mapping and not supporting an offset slow auxiliary control channel SACCH frame mapping.
  • the MS supports both offset SACCH frame mapping and traditional frame mapping.
  • the method further includes:
  • the MSC or the target BSS confirms that the MS does not support the offset.
  • SACCH frame mapping which only supports traditional frame mapping.
  • the method further includes:
  • the target BSS obtains the frame mapping support capability information, and after the MS switches to the target BSS, when the target BSS allocates a channel for the MS:
  • the target BSS controls an MS that supports offset SACCH frame mapping to use an offset SACCH frame mapping function, or uses a conventional frame mapping function;
  • the target BSS controls the MS that does not support offset SACCH frame mapping to use the conventional frame mapping function.
  • the present invention also provides a system for a base station subsystem to obtain a frame mapping support capability of a mobile terminal, the system comprising: an MS, an MSC, and a target BSS, where:
  • the MS is configured to report frame mapping support capability information to the MSC;
  • the MSC is configured to receive the frame mapping support capability information, and send the information to the target switch BSS that is switched by the MS;
  • the target BSS is configured to receive the frame mapping support capability information.
  • the frame mapping support capability information includes: supporting offset SACCH frame mapping, and not supporting partial bias Move the SACCH frame map.
  • the system further includes: a source BSS, configured to receive the frame mapping support capability information reported by the MS, and report the information to the MSC.
  • a source BSS configured to receive the frame mapping support capability information reported by the MS, and report the information to the MSC.
  • the MSC is further configured to: carry the frame mapping support capability information in an indicator, or a capability level parameter of the user equipment, and send the message to the target BSS by using a handover request message or a special frame mapping capability notification message.
  • the MS reports the support capability information of the offset SACCH frame mapping to the MSC through the switched source BSS in the call setup process before the handover;
  • the MSC sends the support capability information of the MS to the offset SACCH frame mapping through the indicator or the capability level parameter of the user equipment in the handover request message or the special frame mapping capability notification message, and sends the information to the handover target.
  • BSS in this way, the target BSS can clearly know whether the MS supports the offset SACCH frame mapping, and when the channel is subsequently allocated to the MS, the control MS uses the offset SACCH frame mapping function or the traditional frame mapping function.
  • Figure 1 is a schematic diagram of a conventional GSM network architecture
  • Figure 2 is a schematic diagram of a flat GSM network architecture
  • FIG. 3 is a schematic diagram of an HR channel using a conventional frame mapping method in a conventional GSM mode
  • FIG. 4 is a schematic diagram of a VAMOS subchannel using an offset SACCH frame mapping method in a VAMOS mode
  • FIG. 5 is a flowchart of a method for obtaining a frame mapping support capability of a mobile terminal by a base station subsystem according to the present invention
  • FIG. 6 is a schematic diagram of a data structure of an indicator carrying frame mapping support capability information according to the present invention
  • FIG. 7 is a schematic structural diagram of a system for obtaining a frame mapping support capability of a mobile terminal by a base station subsystem according to the present invention.
  • the invention sends the frame mapping support capability information of the MS to the target BSS through the MSC.
  • the frame mapping support capability of the MS in the present invention refers to the ability of the MS to support the offset SACCH frame mapping.
  • Step 501 The MS sends the support capability information of the frame mapping to the Mobile Switching Center (MSC).
  • MSC Mobile Switching Center
  • the MS reports its support capability information for the offset SACCH frame mapping to the MSC during the call setup process before the current handover.
  • the support capability information includes: supporting the offset SACCH frame mapping and not supporting the offset SACCH frame mapping.
  • the MS first reports the support capability information of the offset SACCH frame mapping to the source BSS (specifically, the BSC in the source BSS or the source eBTS).
  • the implementation can be implemented as follows:
  • the MS can use its capability information to support offset SACCH frame mapping as a cell of MS class 3 (Classmark 3 ).
  • Classmark 3 is encapsulated in the classmark change message and reported to the source BSS.
  • the MSC may send a Classmark request message to the source BSS for the MS, and after receiving the Classmark request message, the source BSS sends a classmark enquiry message to the MS mobile; MS receives the classmark After the enquiry message, the capability information of the offset SACCH frame mapping is used as a cell of the MS Classmark 3, and is sent to the source BSS through the classmark change message.
  • the Classmark 2 information carrying the information supporting the offset SACCH frame mapping capability is encapsulated in the CM Service Request message and reported to the source BSS; when the MS is called, 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 source BSS.
  • the Classmark 2 information of the CM Service Request message reported to the source BSS does not include the cell that supports the offset SACCH frame mapping capability information; the Classmark 2 information of the paging response message reported to the source BSS. Cells that support offset SACCH frame mapping capability information are not included.
  • the source BSS reports the support capability information of the offset SACCH frame mapping reported by the MS to the MSC.
  • Step 502 The MSC sends the frame mapping support capability information of the MS to the target BSS by using a handover request message.
  • the MSC adds the support capability information of the MS to the offset SACCH frame mapping in the Handover Request message sent to the target BSS.
  • the MSC can also send the support capability information of the MS to the offset SACCH frame mapping to the target BSS through a dedicated frame mapping capability notification message.
  • the support capability information needs to be transmitted through the corresponding message.
  • the foregoing chain can be established.
  • the indication message, the full layer three information message, and the handover request message (or the special frame mapping capability notification message) carry an indicator, as shown in FIG. 6, which is used to carry the support of the MS for the offset SACCH frame mapping. Capability information.
  • the indicator includes a plurality of bits, for example, including 8 bits, and one of the bits can be set to carry the support capability information (including supporting and not supporting two kinds of information) as needed, and other bits can be used to carry Other function information, such as: setting the first bit in the indicator to carry the MS's support capability information for the offset SACCH frame mapping, and for supporting the offset SACCH frame mapping
  • Other function information such as: setting the first bit in the indicator to carry the MS's support capability information for the offset SACCH frame mapping, and for supporting the offset SACCH frame mapping
  • the value of the offset and SACCH frame mapping settings is not supported. For example, if the value of the bit is 1, the MS supports the offset SACCH frame mapping. If the value of the bit is 0, the MS does not support the offset SACCH. Frame mapping.
  • the support capability information of the MS to the offset SACCH frame mapping is transmitted through the corresponding message, there may be other manners: adding a capability level parameter of the user equipment to the corresponding message, the parameter indicating the MS bias The level of support capability for moving the SACCH frame map. For example, if the value of this parameter is set as required, it means support; when the value of this parameter is 0, it means it is not supported.
  • both the MSC and the target BSS do not support the offset SACCH frame by default. Mapping, only supports traditional frame mapping. In addition, MSs that support offset SACCH frame mapping also support legacy frame mapping.
  • the target BSS After the target BSS obtains the support capability information of the MS for the offset SACCH frame mapping, and after the MS switches to the target BSS, when the target BSS allocates a channel to the MS, the MS that supports the offset SACCH frame mapping can control its use as needed. Offset SACCH frame mapping function, or use traditional frame mapping function; For MSs that do not support offset SACCH frame mapping, only traditional frame mapping function can be used.
  • the present invention provides a system for a base station subsystem to obtain a frame mapping support capability of a mobile terminal.
  • the present invention includes: an MS 10, an MSC 20, and a target BSS 30, where:
  • MS 10 configured to report frame mapping support capability information to the MSC 20;
  • the MSC 20 is configured to receive the frame mapping support capability information of the MS 10, and send the information to the MS B switch target BSS 30;
  • the target BSS 30 is configured to receive frame mapping support capability information of the MS 10 sent by the MSC 20.
  • the frame mapping support capability information includes: supporting offset SACCH frame mapping, and not supporting Offset SACCH frame mapping.
  • the system may further include: a source BSS 40, configured to receive the frame mapping support capability information reported by the MS 10, and report the information to the MSC 20.
  • a source BSS 40 configured to receive the frame mapping support capability information reported by the MS 10, and report the information to the MSC 20.
  • the MSC 20 is further configured to: carry the frame mapping support capability information in the indicator, or the capability level parameter of the user equipment, and send the message to the target BSS 30 through a handover request message or a dedicated frame mapping capability notification message.

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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 pour qu'un sous-système de station de base (BSS) récupère la capacité de prise en charge de mappage de trames d'une station mobile (MS), lequel inclut que la station mobile MS rapporte les informations sur la capacité de prise en charge de mappage de trames à un centre de commutation mobile (MSC) ; le centre MSC envoie les informations sur la capacité de prise en charge de mappage de trames à un sous-système cible de station de base BSS de transfert de communication pour la station mobile MS. La présente invention concerne également un système destiné au sous-système BSS pour qu'il récupère la capacité de prise en charge de mappage de trames de la station mobile MS et, grâce au système du mode décrit dans la présente invention, lorsque la station mobile MS effectue le transfert de communication entre des sous-systèmes BSS différents, le sous-système BSS cible peut savoir si la station mobile MS actuelle prend en charge ou non le mode de mappage de trames de canal de commande associé à faible débit (SACCH) décalé.
PCT/CN2009/074943 2009-11-13 2009-11-13 Procédé et système pour qu'un sous-système de station de base récupère la capacité de prise en charge de mappage de trames d'une station mobile WO2011057451A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2009/074943 WO2011057451A1 (fr) 2009-11-13 2009-11-13 Procédé et système pour qu'un sous-système de station de base récupère la capacité de prise en charge de mappage de trames d'une station mobile

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PCT/CN2009/074943 WO2011057451A1 (fr) 2009-11-13 2009-11-13 Procédé et système pour qu'un sous-système de station de base récupère la capacité de prise en charge de mappage de trames d'une station mobile

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001074095A2 (fr) * 2000-03-28 2001-10-04 Telefonaktiebolaget Lm Ericsson (Publ) Transfert dans un reseau de communication radio commute par paquets
US20060035639A1 (en) * 2004-08-10 2006-02-16 Nextel Communications, Inc. System and method for handoff between base stations
CN1792047A (zh) * 2003-07-12 2006-06-21 三星电子株式会社 在移动通信系统中指配资源的装置和方法
CN101094507A (zh) * 2006-06-23 2007-12-26 普天信息技术研究院 时分－同步码分多址移动通信系统中的接力切换方法
CN101472305A (zh) * 2007-12-26 2009-07-01 大唐移动通信设备有限公司 一种实现小区切换的方法、系统及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001074095A2 (fr) * 2000-03-28 2001-10-04 Telefonaktiebolaget Lm Ericsson (Publ) Transfert dans un reseau de communication radio commute par paquets
CN1792047A (zh) * 2003-07-12 2006-06-21 三星电子株式会社 在移动通信系统中指配资源的装置和方法
US20060035639A1 (en) * 2004-08-10 2006-02-16 Nextel Communications, Inc. System and method for handoff between base stations
CN101094507A (zh) * 2006-06-23 2007-12-26 普天信息技术研究院 时分－同步码分多址移动通信系统中的接力切换方法
CN101472305A (zh) * 2007-12-26 2009-07-01 大唐移动通信设备有限公司 一种实现小区切换的方法、系统及装置

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