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WO2009114988A1 - 一种通知用户终端异系统邻小区信息的方法、设备及系统 - Google Patents

一种通知用户终端异系统邻小区信息的方法、设备及系统 Download PDF

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Publication number
WO2009114988A1
WO2009114988A1 PCT/CN2009/000268 CN2009000268W WO2009114988A1 WO 2009114988 A1 WO2009114988 A1 WO 2009114988A1 CN 2009000268 W CN2009000268 W CN 2009000268W WO 2009114988 A1 WO2009114988 A1 WO 2009114988A1
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Prior art keywords
information
network device
different system
capability
neighbor cell
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English (en)
French (fr)
Inventor
王小奇
武欣
刘佳
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China Mobile Communications Group Co Ltd
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China Mobile Communications Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method, a network device, and a system for notifying a user terminal of different system neighbor cell information. Background technique
  • the GSM system is generally referred to as the 2G (2nd Generation Mobile Communication) system.
  • the 3G (The 3rd Generation Mobile Communication) system using CDMA (Code Division Multiple Access) technology has also entered or will enter the commercial stage.
  • the 3G system is based on the WCDMA (Wideband CDMA) standard, the TD-SCDMA (Time Division-Synchronous CDMA) standard, and the CDMA2000 standard.
  • WCDMA Wideband CDMA
  • TD-SCDMA Time Division-Synchronous CDMA
  • CDMA2000 Code Division Multiple Access
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • the cell reselection and handover between different systems requires the network side to provide the parameter information required for inter-system cell reselection and handover to the UE (User Equipment), which is also called the heterogeneous system neighbor cell information, including the frequency point, Information such as codewords, synchronization timing, etc., so that the UE can understand the signal shield of the neighboring cell of the different system, and can reselect or switch to the neighboring cell of the different system when needed.
  • UE User Equipment
  • the heterogeneous system neighbor cell information including the frequency point, Information such as codewords, synchronization timing, etc.
  • the TD-SCDMA system can be referred to as TD for short.
  • SI2quater System Information Type2 quater
  • the GSM system passes the system message SI2quater (System Information Type2 quater) broadcasts the eNB cell's different system neighbor cell information, that is, TD cell information, on the BCCH (Broadcasting Channel).
  • the contents of the SI2quater message are shown in Table 1, including: L2 Pseudo Length, RR Management Protocol Discriminator, Skip Indicator, System Information Type 2quater Message Type Information type 2 quater message type), SI 2 quater Rest Octets, five entries, wherein the entry SI 2 quater Rest Octets indicates the different system neighbor cell information.
  • the UEs in the GSM cell include GSM terminals (also referred to as 2G terminals), terminals supporting GSM-TD dual mode, terminals supporting GSM-WCDMA mode, and the like.
  • GSM terminals also referred to as 2G terminals
  • terminals supporting GSM-TD dual mode terminals supporting GSM-WCDMA mode, and the like.
  • the embodiment of the invention provides a method, a network device and a system for notifying a user terminal of different system neighboring cell information, and solves the problem that an abnormal phenomenon such as a crash or a restart occurs in some user terminals when the network side broadcasts the neighboring cell information of the different system.
  • An embodiment of the present invention provides a method for notifying a user of a neighboring cell information of a different system, including: sending a different system neighbor cell message to the UE when the user terminal UE has the different system access capability, the embodiment of the present invention provides a Network equipment, including:
  • the storage unit is configured to store information about the neighboring cell of the different system.
  • the sending unit is configured to: when the user terminal UE has the different system access capability, send the stored different system neighbor cell information to the UE.
  • the embodiment of the invention discloses a communication system for notifying a user terminal of different system neighbor cell information, comprising a first network device and a second network device, where:
  • the first network device is configured to receive capability information reported by the user terminal UE, and transmit the capability information to the second network device;
  • the second network device is configured to receive capability information of the UE, determine, according to the capability information, whether the UE has an inter-system access capability, and when the node is determined to be yes, send the stored heterogeneous system to the UE. Neighbor cell information.
  • the embodiment of the present invention provides another communication system for notifying the neighboring cell information of the user terminal, including the first network device and the second network device, where:
  • the first network device is configured to receive the capability information reported by the user terminal UE, determine, according to the capability information, whether the UE has the different system access capability, and report the determination result to the second network device;
  • the second network device is configured to receive the determination result, and when the determination result is yes, send the stored different system neighbor cell information to the UE.
  • the method, the network device, and the communication system for notifying the neighboring cell information of the user terminal according to the embodiment of the present invention only transmit the information of the neighboring cell of the different system to the UE having the access capability of the different system, thereby avoiding the capability of not having the different system access.
  • the UE After receiving the information of the neighboring cell of the different system, the UE has an abnormal phenomenon such as a crash or a restart, which improves the user experience.
  • DRAWINGS 1 is a flowchart of a method for notifying a neighboring cell information of a UE in an embodiment of the present invention
  • FIG. 2 is a structural block diagram of a network device for notifying a neighboring cell information of a UE in an embodiment according to an embodiment of the present invention
  • FIG. 3 is a BSC according to Embodiment 1
  • FIG. 4 is a flowchart of a method for notifying UEs of different system neighbor cell information
  • FIG. 4 is a correspondence table between each GSM cell and each TD neighbor cell in Embodiment 1;
  • FIG. 5 is a flow chart of a method for notifying neighboring cell information of a different system by using an MSC Server in Embodiment 2;
  • FIG. 6 is a flowchart of another method for notifying neighboring cell neighbor information by using an MSC Server in Embodiment 3. detailed description
  • some GSM terminals may be analyzed for the cause of an abnormal phenomenon such as a crash or a restart:
  • the GSM terminal since the GSM terminal does not have a different system (for example, a 3G system) Incoming capability does not need to know the cell information of the different system. Therefore, the GSM terminal should directly discard the SI2quater message after receiving the SI2quater message.
  • the GSM terminal that has the above problem tries to parse the message after receiving the SI2quater message, but cannot The TD cell information in the message is identified, causing the parsing failure to enter an infinite loop of the program, thereby causing an abnormal phenomenon such as a crash or a restart.
  • an embodiment of the present invention provides a scheme for notifying a neighboring cell information of a heterogeneous system of a user terminal, which is used to solve the abnormal phenomenon that some GSM terminals are dead, restarted, etc. when the network side broadcasts the neighboring cell information of the different system under the existing mechanism.
  • the solution is as follows: Only the terminal with the access capability of the different system, for example, the user terminal supporting the dual mode of the GSM system and the 3G system, sends the information of the neighboring cell of the different system.
  • a different system of the GSM system is described by using a TD-SCDMA system or an E-UTRAN system as an example.
  • the different system may also be a WCDMA system, a CDMA2000 system, or a WiMAX (Worldwide Interoperability Microwave Access).
  • WCDMA Wideband Code Division Multiple Access
  • CDMA2000 Code Division Multiple Access 2000
  • WiMAX Worldwide Interoperability Microwave Access
  • LTE Long Term Evolution
  • UWB Ultra Wideband, Ultra Wide Band Wireless
  • the location area is the smallest unit of the UE location update and network paging.
  • the LAC Location Area Code
  • the LAC is usually sent in the system message on the BCCH channel of each cell.
  • the UE When the UE is powered on and the SIM (Subscriber Identity Module) card is inserted, it will notify the network of its current location area through the IMSI (International Mobile Subscriber Identifier) attach procedure. As the UE moves, when it enters a new location area, it also initiates a location update, notifying the network of its new LAC. In addition, in order to maintain the close relationship between the UE and the network, and let the network know the location information of the UE in time, the UE may be required to initiate periodic location update to the network at intervals; the network stores the current user terminal at each location update. The LAC, as the location information for paging the UE.
  • IMSI International Mobile Subscriber Identifier
  • the MSC Server Mobile Switching Center Server
  • BSC Base Station Controller
  • the embodiment of the invention provides a method for notifying a user terminal of different system neighbor cell information, as shown in FIG. 1 , which includes the following steps:
  • the capability information of the UE it is determined whether the UE has an inter-system access capability.
  • the UE can actively report the capability information of the terminal to the BSC after the UE is powered on or updated in the GSM cell.
  • the capability information specifically refers to whether it has different system access capabilities.
  • the information about the neighboring cell of the different system includes the correspondence between each cell in the location area where the UE is located and the neighboring cell of the different system, and/or the configuration information of the neighboring cell of the different system; and, the information of the neighboring cell of the different system is usually not broadcast.
  • a channel such as a dedicated channel or a shared channel, is transmitted to the UE.
  • the dual-mode terminal with different system access capability can normally perform cell reselection and handover between different systems according to the neighboring cell information of the different system, and does not have the GSM terminal with different system access capability, since no difference is received.
  • the system neighbors the cell information, so there will be no abnormal phenomena such as crashes and restarts. This method effectively solves the problem that some user terminals have an abnormal phenomenon such as a crash or a restart when the network side broadcasts the neighboring cell information of the different system under the existing mechanism, thereby effectively improving the user experience.
  • the method for notifying a user terminal of different system neighboring cell information does not need to modify a large number of existing GSM terminals on the terminal side, and the modification of the dual mode terminal is mainly to enable the dual mode terminal to identify and store the dedicated channel. Or sharing the neighboring cell information of the different system received by the channel, and performing an interoperation process such as cell reselection and handover according to the information.
  • a network device that implements the foregoing method on the network side, as shown in FIG. 2, includes:
  • the storage unit 201 is configured to store the information of the neighboring cell of the different system.
  • the sending unit 202 is configured to: when the user terminal UE has the different system access capability, send the stored different system neighbor cell information to the UE.
  • the network device further includes: a receiving unit 203, configured to receive capability information of the user terminal UE, and a determining unit 204, configured to determine, according to capability information of the UE received by the receiving unit 203, whether the UE has different system access capability;
  • the sending unit 202 is notified to send the stored different system neighbor cell information to the UE.
  • the network device may be a BSC or an MSC Server.
  • all GSM cells in the same location area are within the same BSC control range.
  • the coverage area of the GSM cell satisfies the condition. If the condition is not met, it can be adjusted by the conventional location area optimization method, so that the location area in the GSM system is equivalent to the BSC control range.
  • the BSC pre-stores the correspondence between each GSM cell and each TD neighbor cell. And/or configuration information of each TD neighbor cell.
  • the method for notifying a user terminal of different system neighbor cell information by using a BSC includes the following steps:
  • the UE is powered on or updated in a GSM cell.
  • the UE actively sends the capability information of the terminal to the BSC.
  • the capability information is reported by initiating a Classmark change message.
  • the capability information refers specifically to the content of the Classmark 3 option in the Classmark change message.
  • the Classmark 3 is specifically: UMTS (Universal Mobile Telecommunications System) Communication System) 1.28 Mcps TDD Radio Access Technology Capability (Time Division Duplex Wireless Access Technology Capability).
  • Classmark 3 is used to indicate whether the terminal supports UMTS 1.28 Mcps TDD, that is, whether it has different system access capabilities. When the parameter value of Classmark 3 is 1, it indicates that UMTS 1.28Mcps TDD is supported. When the parameter value is 0, it indicates that UMTS 1.28Mcps TDD is not supported. It can be seen that if the UE is a dual-mode terminal, the value of the Classmark 3 parameter in the reported Classmark change message is 1. If the UE is a GSM terminal, the value of the Classmark 3 parameter in the reported Classmark change message is 0.
  • the UE always initiates the Classmark change message after the power-on or location update, and can be implemented by setting information on the network side.
  • SI 3 Rest Octets sent by the GSM cell the parameter of the Early Classmark Sending Control option is set to H, and the control can be controlled.
  • the UE always sends a Classmark change message after power on or location update.
  • the BSC receives the capability information reported by the UE, determines whether the UE supports the UMTS 1.28 Mcps TDD, that is, whether the system has the different system access capability, if not, executes S304, and if yes, executes S305;
  • the BSC sends, by using a dedicated channel (for example, an SDCCH channel), the information of the neighboring cell to the UE, including the correspondence between each GSM cell and the neighboring cell of the different system in the location where the UE is located, and/or the neighboring cell of the different system.
  • a dedicated channel for example, an SDCCH channel
  • the UE stores the received neighboring cell information of the different system, and the process ends.
  • PS Packet Switch, packet switched domain
  • PS connection state reselection to TD-SCDMA system PS connection state reselection to TD-SCDMA system
  • CS Circuit Switch Domain
  • the transmitted hetero-system neighbor cell information includes the correspondence between each GSM cell and the neighboring cell of the different system in the location area where the UE is located, and/or the neighboring cell of the different system.
  • the configuration information is that when the UE is in the Idle state, the location update is performed only when the location area is changed, and the network is contacted, that is, the location information management of the UE in the Idle state of the UE can only be accurate to the location area. level. Therefore, the location area as the unit of the transmitted inter-system neighbor cell information can ensure that the UE has enough different system neighbor cell information to be used when moving in one location area.
  • each cell in a location area and the adjacent cell of the different system can be given by means of a correspondence table.
  • a correspondence table Taking a GSM cell in a location area as an example for description, the corresponding relationship between each GSM cell and each TD neighboring cell is as shown in FIG. 4, and each cell and different system neighboring cells shown in FIG. 4 can be transmitted through a dedicated channel.
  • Correspondence table Of course, in addition to the correspondence table shown in FIG. 4, configuration information of each TD cell appearing in the correspondence table may be simultaneously transmitted.
  • the BSC needs to store the correspondence between each GSM cell and each TD neighboring cell in the BSC, and/or the configuration information of each TD neighboring cell.
  • the BSC receives the Classmark change message reported by the UE, it can determine whether the UE has a different system connection. Incoming capability, and only transmitting information of different system neighbor cells to UEs with different system access capabilities.
  • all GSM cells in the same location area are within two or more BSC services.
  • the MSC Server needs to pre-store the correspondence between the internal GSM cells and the TD neighbor cells, and/or the configuration information of each TD neighbor cell, because the MSC Server manages at least one location area. This requires the BSC to report the neighboring cell information of each GSM cell to the MSC Server in advance, and then store it by the MSC Server.
  • a method for notifying a user terminal of different system neighbor cell information by using an MSC Server includes the following steps: 5501. The UE is powered on or updated in the GSM cell.
  • the UE actively reports the capability information of the terminal to the BSC.
  • the UE After the UE is powered on or the location is updated, the UE reports the capability information to the SC by initiating a Classmark change message.
  • the BSC passes the capability information reported by the UE to the MSC Server.
  • the MSC Server receives the capability information of the UE, determines whether the UE supports the UMTS 1.28 Mcps TDD, that is, whether the system has the different system access capability, if not, executes S505, and if yes, executes S506;
  • the MSC Server does not take any action, and the process ends.
  • the MSC Server sends, by using a dedicated channel (for example, an SDCCH channel), the information of the neighboring cell to the UE, including the correspondence between each GSM cell and the neighboring cell of the different system in the location where the UE is located, and/or the neighboring cell of the different system.
  • a dedicated channel for example, an SDCCH channel
  • the UE stores the received neighboring cell information of the different system, and the process ends.
  • the BSC needs to send the capability information reported by the UE to the MSC Server, and the MSC Server needs to store the correspondence between the GSM cells and the TD neighboring cells in the MSC Server, and/or the configuration information of each TD neighboring cell;
  • the MSC Server can determine whether the UE has the different system access capability, and only sends the neighboring cell information of the different system to the UE with the different system access capability.
  • This embodiment provides another method for notifying the user terminal of the neighboring cell information of the system through the MSC Server. As shown in FIG. 6, the method includes the following steps:
  • the UE is powered on or updated in the GSM cell.
  • the UE actively reports the capability information of the terminal to the BSC.
  • the UE reports the capability information to the BSC by initiating a Classmark change message after the GSM cell is powered on or updated.
  • the BSC receives the capability information of the UE, determines whether the UE supports the UMTS 1.28 Mcps TDD, that is, whether the system has the access capability of the different system, and reports the judgment result to the MSC Server; 5604, the MSC Server receives the determination result, when the determination result is no, then S605 is performed, and when the determination result is YES, then S606 is performed;
  • the MSC Server does not take any action, and the process ends;
  • the MSC Server sends, by using a dedicated channel (for example, an SDCCH channel), the information of the neighboring cell to the UE, including the correspondence between each GSM cell and the neighboring cell of the different system in the location area where the UE is located, and/or the neighboring cell of the different system.
  • a dedicated channel for example, an SDCCH channel
  • the UE stores the received neighboring cell information of the different system, and the process ends.
  • the BSC needs to determine whether the UE has the different system access capability according to the capability information reported by the UE, and sends the judgment result to the MSC Server, where the MSC Server needs to store the correspondence between each GSM cell and each TD neighboring cell in the MSC Server. The relationship, and/or the configuration information of each TD neighboring cell, when the MSC Server receives the judgment result is yes, sends the different system neighbor cell information to the UE.
  • the embodiment of the present invention provides a communication system for informing the user terminal of the neighboring cell information of the system, including the first network device and the second network device.
  • the first network device may be a BSC
  • the second network device may be an MSC Server, where:
  • the first network device is configured to receive capability information reported by the UE, and transmit the capability information to the second network device.
  • the UE can report its capability information according to the network setting information.
  • the second network device is configured to receive the capability information of the UE, and determine, according to the capability information, whether the UE has the different system access capability, and when the determination result is yes, send the stored different system neighbor cell information to the UE. Or,
  • the first network device is configured to receive the capability information reported by the UE, determine, according to the capability information, whether the UE has the different system access capability, and report the determination result to the second network device;
  • the UE can report its capability information according to the network setting information.
  • the second network device is configured to receive the judgment result, and when the judgment result is yes, send the stored different system neighbor cell information to the UE.
  • the TD-GSM dual-mode terminal in the embodiment of the present invention is not only capable of being based on the network side.
  • the setting information after the power-on or location update, always sends a Classmark change message carrying Classmark 3, indicating the capability information of the terminal, and also identifying and storing the different-system neighboring cell that the network side sends to the device through the non-broadcast channel.
  • Information and according to the neighboring cell information of different systems, perform inter-operational procedures such as cell reselection and handover between different systems.
  • the method, the network device, and the communication system for notifying the neighboring cell information of the user terminal only transmit the information of the neighboring cell of the different system to the dual mode terminal, thereby effectively preventing the GSM terminal from receiving the information of the neighboring cell of the different system.
  • Possible abnormalities such as crashes and restarts have improved user experience.
  • the UE may use other messages than the Classmark change message to send capability information.

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Description

一种通知用户终端异系统邻小区信息的方法、 设备及系统 技术领域
本发明涉及移动通信技术领域， 尤其涉及一种通知用户终端异系统邻小 区信息的方法、 网络设备及系统。 背景技术
目前全球范围内商用规模最大、 覆盖范围最广的数字移动通信系统是
GSM ( Global System for Mobile Communication, 全球移动通信系统）。 GSM 系统一般被称为 2G ( the 2nd Generation Mobile Communication, 第二代移动 通信） 系统。 随着技术的发展， 采用 CDMA ( Code Division Multiple Access, 码分多址接入 )技术的 3G ( The 3rd Generation Mobile Communication, 第三 代移动通信）系统也已经或将要进入商用阶段。 3G系统以 WCDMA( Wideband CDMA ) 标准、 TD-SCDMA ( Time Division-Synchronous CDMA ) 标准和 CDMA2000标准为主流技术。并且， 3GPP ( 3rd Generation Partnership Project, 第三代移动通信标准化组织）已启动了 LTE ( Long Term Evolution,长期演进） 技术的标准化工作。
对于新建设的 3G网络及其后续演进网络， 在建设初期由于其覆盖有限， 不能提供连续的无缝覆盖，需要在没有覆盖或者覆盖不佳的区域依靠 GSM网 络进行补充， 因此出现了两个网络之间的互操作问题。 在两个或者多个网络 之间进行小区重选和切换的情况， 称之为异系统（Inter-RAT ) 间的小区重选 和切换。 异系统间的小区重选和切换需要网络侧向 UE ( User Equipment, 用 户终端）提供异系统间小区重选和切换时所需的参数信息， 也称为异系统邻 小区信息， 包括频点、 码字、 同步定时等信息， 从而使 UE能够了解异系统邻 小区的信号盾量， 并在需要的时候能够重选或者切换至异系统邻小区。
以 GSM系统的异系统为 TD-SCDMA系统为例进行说明， TD-SCDMA可 以简称为 TD。 现有技术中， GSM 系统通过系统消息 SI2quater ( System Information Type2 quater )在 BCCH ( Broadcasting Channel, 广播信道)上广 播 GSM小区的异系统邻小区信息， 即 TD小区信息。 SI2quater消息内容如表 1所示， 包括： L2 Pseudo Length (层 2虛拟长度）、 RR management Protocol Discriminator (无线资源管理协议鉴别器）、 Skip Indicator (跳位指示）、 System Information Type 2quater Message Type (系统信息类型 2quater消息类型 )、 SI 2 quater Rest Octets ( SI 2 quater剩余字节）五个表项， 其中表项 SI 2 quater Rest Octets中指示异系统邻小区信息。 GSM小区内的所有 UE都会收到该 SI2quater 消息。 GSM小区内的 UE包括 GSM终端（也可称为 2G终端）、支持 GSM-TD 双模的终端、 支持 GSM-WCDMA默模的终端， 等等。
表 1
Figure imgf000004_0001
在目前进行的 TD-SCDMA规模试验网的测试中发现， 一旦 GSM小区配 置了 TD小区信息， 即通过在 GSM系统的 BCCH信道上发送 SI2quater消息 来携带 TD小区信息， 将会有部分 GSM终端出现死机、 重启等异常现象， 极 大地影响了该部分用户的使用。 发明内容
本发明实施例提供了一种通知用户终端异系统邻小区信息的方法、 网络 设备及系统， 解决了网络侧广播异系统邻小区信息时， 部分用户终端出现死 机、 重启等异常现象的问题。 本发明实施例提供了一种通知用户终端异系统邻小区信息的方法， 包括： 在用户终端 UE具备异系统接入能力时，向所述 UE发送异系统邻小区信 本发明实施例提供了一种网络设备， 包括：
存储单元： 用于存储异系统邻小区信息；
发送单元： 用于在用户终端 UE具备异系统接入能力时， 向所述 UE发送 存储的异系统邻小区信息。
本发明实施例公开了一种通知用户终端异系统邻小区信息的通信系统， 包括第一网络设备和第二网络设备， 其中：
所述第一网络设备用于接收用户终端 UE上报的能力信息，并将所述能力 信息传递给所述第二网络设备；
所述第二网络设备用于接收所述 UE的能力信息，根据所述能力信息判断 所述 UE是否具备异系统接入能力， 当判断结杲为是时， 向所述 UE发送存储 的异系统邻小区信息。
本发明实施例提供了另一种通知用户终端异系统邻小区信息的通信系 统， 包括第一网络设备和第二网络设备， 其中：
所述第一网络设备用于接收用户终端 UE上报的能力信息，根据所述能力 信息判断所述 UE是否具备异系统接入能力，并将判断结果上报给所述第二网 络设备；
所述第二网络设备用于接收所述判断结果， 当判断结果为是时， 向所述 UE发送存储的异系统邻小区信息。
本发明实施例提供的通知用户终端异系统邻小区信息的方法、 网络设备 及通信系统，仅向具备异系统接入能力的 UE发送异系统邻小区信息，从而避 免了不具备异系统接入能力的 UE接收到异系统邻小区信息后出现死机、重启 等异常现象， 提升了用户感受。 附图说明 图 1为本发明实施例中通知 UE异系统邻小区信息的方法流程图； 图 2为本发明实施例中通知 UE异系统邻小区信息的网络设备结构框图； 图 3为实施例一中通过 BSC通知 UE异系统邻小区信息的方法流程图； 图 4为实施例一中各 GSM小区与各 TD邻小区对应关系表；
图 5为实施例二中通过 MSC Server通知异系统邻小区信息的方法流程 图；
图 6为实施例三中另一种通过 MSC Server通知异系统邻小区信息的方法 流程图。 具体实施方式
首先对现有技术中一旦 GSM小区配置了 TD小区信息，将会有部分 GSM 终端出现死机、 重启等异常现象的原因进行分析： 正常情况下， 由于 GSM终 端不具备异系统（例如 3G系统）接入能力，也不需要了解异系统的小区信息， 因此 GSM终端在收到 SI2quater消息后应当直接丢弃；而出现上述问题的 GSM 终端是在收到 SI2quater消息后试图对该消息进行解析， 但由于不能识别该消 息中的 TD小区信息， 导致解析失败进入程序死循环， 从而造成死机、 重启等 异常现象的产生。 可见， 出现该类异常现象的原因是部分 GSM终端芯片厂商 在开发芯片平台时没有考虑到如何处理 3G系统及其后续演进系统的信息。另 外， 现有移动通信系统中 UE (主要为 GSM终端 )数量巨大， 很难对 UE进 行改造、 控制和管理， 所以从终端侧解决该问题也很难实现。
基于此， 本发明实施例提供了一种通知用户终端异系统邻小区信息的方 案， 用以解决现有机制下网络侧广播异系统邻小区信息时， 部分 GSM终端出 现死机、 重启等异常现象的问题。 该方案为： 仅向具备异系统接入能力的终 端，例如支持 GSM系统和 3G系统双模的用户终端，下发异系统邻小区信息。
本发明实施例中， GSM系统的异系统以 TD-SCDMA系统或 E-UTRAN 系统为例进行说明， 当然异系统也可以为 WCDMA系统、 CDMA2000系统、 WiMAX ( Worldwide Interoperability Microwave Access, 波接入全球互通 ) 系统、 LTE系统、 UWB ( Ultra Wideband, 超宽带无线技术） 系统， 等等。 在 GSM系统中， 由于寻呼信道容量的限制， 对 UE的寻呼消息不可能整 网下发， 由此引入了位置区的概念， 一个位置区中包括若干个小区， 对 UE的 网络寻呼是通过对 UE所在位置区内所有小区的寻呼来实现的。 位置区是 UE 位置更新和网络寻呼的最小单位， 用 LAC ( Location Area Code, 位置区码） 标识不同的位置区， LAC通常在每个小区 BCCH信道上的系统消息中发送。
当 UE开机、插入 SIM ( Subscriber Identity Module,用户识别模块）卡时， 会通过 IMSI ( International Mobile Subscriber Identifier, 国际移动用户标识） 附着过程向网络通知其当前所在的位置区。随着 UE的移动， 当进入一个新的 位置区内时， 也会发起位置更新， 向网络通知其新的 LAC。 此外， 为了保持 UE和网络之间的密切联系， 让网络及时掌握 UE的位置信息， 可以要求 UE 每隔一段时间向网络发起周期性的位置更新； 网络会在每次位置更新时存储 用户终端当前的 LAC， 作为寻呼该 UE的位置信息。 当对一个位置区内的 UE 发起呼叫时， MSC Server ( Mobile Switching Center Server, 移动交换中心服 务器）就会通过 BSC ( Base Station Controller, 基站控制器）向对应位置区内 的所有小区发出寻呼请求，即会在该 UE所在的位置区内对所有 UE进行寻呼。
本发明实施例提供了一种通知用户终端异系统邻小区信息的方法，如图 1 所示， 包括如下步骤：
5101、 判断 UE是否具备异系统接入能力；
例如根据所述 UE的能力信息来判断该 UE是否具备异系统接入能力； 通过在网络侧进行设置， 可以使 UE在 GSM小区内开机或位置更新后， 主动向 BSC上报本终端的能力信息， 能力信息具体指是否具备异系统接入能 力。
5102、 当判断结果为是时， 向该 UE发送异系统邻小区信息。
其中，异系统邻小区信息包括 UE所处位置区内各小区与各异系统邻小区 的对应关系， 和 /或各异系统邻小区的配置信息； 并且， 异系统邻小区信息通 常是通过非广播信道， 例如专用信道或者共享信道发送给 UE的。 至此， 具备异系统接入能力的双模终端根据异系统邻小区信息即可正常 开展异系统间的小区重选和切换， 而不具备异系统接入能力的 GSM终端， 由 于不会接收到异系统邻小区信息， 所以也不会产生死机、 重启等异常现象。 采用该方法， 即有效解决了现有机制下网络侧广播异系统邻小区信息时， 部 分用户终端出现死机、 重启等异常现象的问题， 有效提升了用户感受。
本发明实施例提供的通知用户终端异系统邻小区信息的方法， 无需在终 端侧对现有大量的 GSM终端进行改造，对双模终端的改造主要是使双模终端 能够识别并存储从专用信道或者共享信道接收到的异系统邻小区信息， 并按 照该信息进行小区重选、 切换等互操作流程。
本发明实施例提供的方案主要依靠网络侧实现 , 一种在网络侧实现上述 方法的网络设备， 如图 2所示， 包括：
存储单元 201: 用于存储异系统邻小区信息；
发送单元 202: 用于在用户终端 UE具备异系统接入能力时， 向所述 UE 发送存储的异系统邻小区信息。
该网络设备还包括： 接收单元 203， 用于接收用户终端 UE的能力信息； 判断单元 204， 用于根据接收单元 203接收的 UE的能力信息， 判断所述 UE是否具备异系统接入能力；
当判断单元 204判断出所述 UE具备异系统接入能力时，通知所述发送单 元 202向所述 UE发送存储的异系统邻小区信息。
网络设备具体可以为 BSC或者 MSC Server, 下面针对不同场景， 以具体 实施例进行详细介绍。
实施例一
本实施例^殳同一个位置区内的所有 GSM小区在同一个 BSC控制范围 内。 一般情况下， GSM小区的覆盖区域均满足该条件， 如果不满足该条件， 则可以通过常规的位置区优化方式进行调整， 使 GSM 系统内位置区等同于 BSC控制范围。
本实施例中， BSC预先存储内郜各 GSM小区与各 TD邻小区的对应关系 , 和 /或各 TD邻小区的配置信息。 如图 3所示， 通过 BSC通知用户终端异系统 邻小区信息的方法包括如下步骤：
S301、 UE在 GSM小区内开机或位置更新；
5302、 UE主动向 BSC上 4艮本终端的能力信息；
UE在 GSM小区内开机或位置更新后 , 通过发起 Classmark change消息 上报其能力信息， 能力信息具体是指 Classmark change消息中 Classmark 3选 项的内容, Classmark 3具体为： UMTS ( Universal Mobile Telecommunications System,通用移动通信系统） 1.28Mcps TDD Radio Access Technology Capability (时分双工无线接入技术能力）。 Classmark 3用于指示该终端是否支持 UMTS 1.28Mcps TDD,即是否具备异系统接入能力。当 Classmark 3的参数值为 1时， 表明支持 UMTS 1.28Mcps TDD, 参数值为 0时，表明不支持 UMTS 1.28Mcps TDD。可见，如果 UE为双模终端，则上报的 Classmark change消息中 Classmark 3的参数值为 1 , 如果 UE为 GSM终端， 则上报的 Classmark change消息中 Classmark 3的参数值为 0。
UE在开机或位置更新后总是发起 Classmark change消息可以通过网络侧 的设置信息实现，在 GSM小区下发的系统消息 SI 3 Rest Octets中，设置 Early Classmark Sending Control选项的参数为 H， 就可以控制 UE在开机或位置更 新后 , 总是发送 Classmark change消息。
5303、 BSC接收到 UE上报的能力信息， 判断该 UE是否支持 UMTS 1.28Mcps TDD, 即是否具备异系统接入能力， 如果否， 则执行 S304, 如果是， 则执行 S305;
5304、 BSC不采取任何动作， 本次流程结束；
5305、 BSC通过专用信道（例如 SDCCH信道）发送异系统邻小区信息 给所述 UE, 包括该 UE所处位置区内各 GSM小区与异系统邻小区的对应关 系， 和 /或各异系统邻小区的配置信息；
5306、 UE存储接收到的异系统邻小区信息， 本次流程结束。
具备异系统接入能力的 UE获得异系统邻小区信息后， 即可用于 idle态、 PS ( Packet Switch, 分组交换域） idle态、 PS连接态向 TD-SCDMA系统的重 选， 以及 CS ( Circuit Switch, 电路交换域）连接态向 TD-SCDMA系统的切 换。
选择位置区作为发送的异系统邻小区信息的单位（即发送的异系统邻小 区信息包括 UE所处位置区内各 GSM小区与异系统邻小区的对应关系， 和 / 或各异系统邻小区的配置信息）， 是考虑到 UE在 Idle (空闲） 态时， 只有变 更位置区时才会进行位置更新，与网络进行联系， 即网络对 UE在 Idle态的位 置信息管理只能精确到位置区的級别。 因此， 以位置区作为发送的异系统邻 小区信息的单位可以保证 UE在一个位置区内移动时具有足够的异系统邻小 区信息可以使用。
一个位置区内各小区与各异系统邻小区的对应关系可以采用对应关系表 的方式给出。 以一个位置区内包括 12个 GSM小区为例进行说明，各 GSM小 区与各 TD邻小区的对应关系如图 4所示，可以通过专用信道发送图 4所示的 各小区与各异系统邻小区对应关系表； 当然， 除了图 4所示的对应关系表以 外， 还可以同时发送该对应关系表中出现的各 TD小区的配置信息。
实施例一中， 在网络侧， 无需对 MSC Server进行任何改动。 BSC则需要 存储该 BSC内部各 GSM小区与各 TD邻小区的对应关系， 和 /或各 TD邻小 区的配置信息； 当 BSC接收到 UE上报的 Classmark change消息时， 能够判 断 UE是否具备异系统接入能力 ,并仅对具备异系统接入能力的 UE发送异系 统邻小区信息。
实施例二
本实施例 ϋ殳同一个位置区内的所有 GSM小区在两个或两个以上 BSC 服务范围内。 在这种情况下， 需要 MSC Server预先存储内部各 GSM小区与 各 TD邻小区的对应关系， 和 /或各 TD邻小区的配置信息， 因为 MSC Server 会至少管理一个位置区。 这就需要 BSC预先将各 GSM小区的异系统邻小区 信息上报至 MSC Server, 再由 MSC Server进行存储。 如图 5所示， 一种通过 MSC Server通知用户终端异系统邻小区信息的方法， 包括如下步骤： 5501、 UE在 GSM小区内开机或位置更新；
5502、 UE主动向 BSC上报本终端的能力信息；
UE在 GSM小区开机或位置更新后， 通过发起 Classmark change消息向 SC上报其能力信息；
S503、 BSC将 UE上报的能力信息传递给 MSC Server;
5504、 MSC Server接收到 UE的能力信息， 判断 UE是否支持 UMTS 1.28Mcps TDD, 即是否具备异系统接入能力， 如果否， 则执行 S505, 如果是， 则执行 S506;
5505、 MSC Server不采取任何动作， 本次流程结束；
5506、 MSC Server通过专用信道（例如 SDCCH信道）发送异系统邻小 区信息给该 UE， 包括 UE所处位置区内各 GSM小区与异系统邻小区的对应 关系， 和 /或各异系统邻小区的配置信息；
5507、 UE存储接收到的异系统邻小区信息， 本次流程结束。
实施例二中， BSC需要将 UE上报的能力信息发送给 MSC Server, MSC Server需要存储该 MSC Server内部各 GSM小区与各 TD邻小区的对应关系， 和 /或各 TD邻小区的配置信息；当 MSC Server接收到 UE的 Classmark change 消息时， 能够判断 UE是否具备异系统接入能力，并仅对具备异系统接入能力 的 UE, 发送异系统邻小区信息。
实施例三
本实施例提供另一种通过 MSC Server通知用户终端异系统邻小区信息的 方法， 如图 6所示， 包括如下步骤：
5601、 UE在 GSM小区内开机或位置更新；
5602、 UE主动向 BSC上报本终端的能力信息；
UE在 GSM小区开机或位置更新后， 通过发起 Classmark change消息向 BSC上报其能力信息；
S603、 BSC接收到 UE的能力信息， 判断 UE是否支持 UMTS 1.28Mcps TDD, 即是否具备异系统接入能力， 并将判断结果上报 MSC Server; 5604、 MSC Server接收判断结果， 当判断结果为否时， 则执行 S605, 当 判断结果为是时， 则执行 S606;
5605、 MSC Server不采取任何动作， 本次流程结束；
5606、 MSC Server通过专用信道（例如 SDCCH信道）发送异系统邻小 区信息给该 UE， 包括 UE所处位置区内各 GSM小区与异系统邻小区的对应 关系， 和 /或各异系统邻小区的配置信息；
5607、 UE存储接收到的异系统邻小区信息， 本次流程结束。
实施例三中， BSC需要根据 UE上报的能力信息判断 UE是否具备异系统 接入能力， 并将判断结果发送给 MSC Server, MSC Server需要存储该 MSC Server内部各 GSM小区与各 TD邻小区的对应关系， 和 /或各 TD邻小区的配 置信息， 当 MSC Server接收到的判断结杲为是时， 对该 UE发送异系统邻小 区信息。
本发明实施例同时提供一种通知用户终端异系统邻小区信息的通信系 统， 包括第一网络设备和第二网络设备， 第一网络设备可以为 BSC, 第二网 络设备可以为 MSC Server, 其中：
第一网络设备用于接收 UE上报的能力信息，并将能力信息传递给第二网 络设备；
其中， UE可以根据网络设置信息上报其能力信息。
第二网络设备用于接收 UE的能力信息，根据能力信息判断 UE是否具备 异系统接入能力， 当判断结果为是时，向所述 UE发送存储的异系统邻小区信 息。 或者，
第一网络设备用于接收 UE上报的能力信息，根据所述能力信息判断所述 UE是否具备异系统接入能力， 并将判断结果上报给第二网络设备；
其中， UE可以根据网络设置信息上报其能力信息。
第二网络设备用于接收判断结果， 当判断结果为是时， 向所述 UE发送存 储的异系统邻小区信息。
当然， 本发明实施例中的 TD-GSM双模终端除了具备能够根据网络侧的 设置信息， 在开机或位置更新后， 总是发送携带 Classmark 3 的 Classmark change 消息， 指示本终端的能力信息之外， 还可以识别并存储网络侧通过非 广播信道发送给本设备的异系统邻小区信息， 并按照异系统邻小区信息进行 异系统间的小区重选、 切换等互操作过程。
本发明实施例提供的通知用户终端异系统邻小区信息的方法、 网路设备 及通信系统仅向双模终端发送异系统邻小区信息，从而有效避免了 GSM终端 接收到异系统邻小区信息时， 可能出现的死机、 重启等异常现象， 提升了用 户感受。 发明的精神和范围。 例如， UE可以利用 Classmark change消息之外的其他消 息来发送能力信息。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种通知用户终端异系统邻小区信息的方法， 其特征在于， 包括： 在用户终端 UE具备异系统接入能力时，向所述 UE发送异系统邻小区信
2、如权利要求 1所述的方法，其特征在于， 所述异系统邻小区信息包括： 所述 UE所处位置区内各小区与各异系统邻小区的对应关系； 和 /或 各异系统邻小区的配置信息。
3、 如权利要求 1或 2所述的方法， 其特征在于， 所述异系统邻小区信息 是通过专用信道或者共享信道向所述 UE发送的。
4、 如权利要求 1或 2所述的方法， 其特征在于， 还包括根据所述 UE的 能力信息来判断所述 UE是否具备异系统接入能力。
5、 如权利要求 4所述的方法， 其特征在于， 根据所述 UE的能力信息来 判断所述 UE是否具备异系统接入能力包括：
第一网络设备接收所述 UE 的能力信息， 并根据所述能力信息判断所述 UE是否具备异系统接入能力； 或
第一网络设备接收所述 UE的能力信息，并将所述能力信息传递给第二网 络设备，所述第二网络设备根据所述能力信息判断所述 UE是否具备异系统接 入能力。
6、 如权利要求 5所述的方法， 其特征在于， 所述第一网络设备为基站控 制器 BSC, 所述第二网络设备为移动交换中心服务器 MSC Server。
7、 如权利要求 1或 2所述的方法， 其特征在于， 当所述 UE具备异系统 接入能力时， 基站控制器 BSC或移动交换中心服务器 MSC Server向所述 UE 发送异系统邻小区信息。
8、 一种网络设备， 其特征在于， 包括：
存储单元： 用于存储异系统邻小区信息；
发送单元： 用于在用户终端 UE具备异系统接入能力时， 向所述 UE发送 存储的异系统邻小区信息。
9、 如权利要求 8所述的网络设备， 其特征在于， 还包括：
接收单元， 用于接收用户终端 UE的能力信息；
判断单元， 用于根据接收单元接收的 UE的能力信息， 判断所述 UE是否 具备异系统接入能力；
当判断单元判断出所述 UE具备异系统接入能力时，通知所述发送单元向 所述 UE发送存储的异系统邻小区信息。
10、 一种通知用户终端异系统邻小区信息的通信系统， 其特征在于， 包 括第一网络设备和第二网络设备， 其中：
所述第一网络设备用于接收用户终端 UE上报的能力信息，并将所述能力 信息传递给所述第二网络设备；
所述第二网络设备用于接收所述 UE的能力信息，根据所述能力信息判断 所述 UE是否具备异系统接入能力， 当判断结果为是时， 向所述 UE发送存储 的异系统邻小区信息。
11、 如权利要求 10所述的通信系统， 其特征在于， 所述第一网络设备为 基站控制器 BSC, 所述第二网络设备为移动交换中心服务器 MSC Server。
12、 一种通知用户终端异系统邻小区信息的通信系统， 其特征在于， 包 括第一网络设备和第二网络设备， 其中：
所述第一网络设备用于接收用户终端 UE上报的能力信息，根据所述能力 信息判断所述 UE是否具备异系统接入能力，并将判断结果上报给所述第二网 络设备；
所述第二网络设备用于接收所述判断结果， 当判断结果为是时， 向所述 UE发送存储的异系统邻小区信息。
13、 如权利要求 12所述的通信系统， 其特征在于， 所述第一网络设备为 基站控制器 BSC, 所述第二网络设备为动交换中心服务器 MSC Server。
PCT/CN2009/000268 2008-03-17 2009-03-12 一种通知用户终端异系统邻小区信息的方法、设备及系统 Ceased WO2009114988A1 (zh)

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CN105792244A (zh) * 2014-12-22 2016-07-20 中兴通讯股份有限公司 2g网络的系统消息优化方法及系统
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CN101076192A (zh) * 2007-03-08 2007-11-21 中兴通讯股份有限公司 双模移动终端与通用地面无线接入网进行信息交互的方法

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