WO2008148314A1 - Handover method, system and mobile station - Google Patents

Handover method, system and mobile station Download PDF

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Publication number
WO2008148314A1
WO2008148314A1 PCT/CN2008/070602 CN2008070602W WO2008148314A1 WO 2008148314 A1 WO2008148314 A1 WO 2008148314A1 CN 2008070602 W CN2008070602 W CN 2008070602W WO 2008148314 A1 WO2008148314 A1 WO 2008148314A1
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WIPO (PCT)
Prior art keywords
base station
transceiver
service link
handover
mobile station
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PCT/CN2008/070602
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French (fr)
Chinese (zh)
Inventor
Shengqiang Yang
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008148314A1 publication Critical patent/WO2008148314A1/en

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    • 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
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports

Definitions

  • the present invention relates to the field of wireless access, and in particular, to a method and system for handover and a mobile station (MS).
  • MS mobile station
  • the wireless cellular network system mainly includes a mobile station (MS), a base station (BS), a mobile switching center (MSC), an external network, and functional entities responsible for mobility management.
  • the main function of the MS is to terminate the propagation path of the radio wave at the user end, and to ensure that the user can obtain the service through the network, which is connected with the BS through the Um interface; the main function of the BS is to end the radio wave propagation path and connect to the MSC.
  • the interface between the MSC and the MSC is the A interface; the MSC is responsible for the conversion of the service between the wireless network user and the wired network or other wireless network; the functional entity responsible for the mobility management mainly performs the mobility management of the MS, which mainly includes the home location.
  • the register (HLR), the visitor location register (VLR), and the authentication center (AC), etc.; and the external network mainly refers to the Public Switched Telephone Network (PSTN) and the Integrated Services Digital Network (ISDN) and the like.
  • PSTN Public Switch
  • the BS is often split and installed in a base station controller (BSC) and a base transceiver station (BTS).
  • BSC base station controller
  • BTS base transceiver station
  • the BTS is composed of one or more transceivers arranged at the same location, which end the radio wave propagation path at the network end
  • the BSC is a system for managing and controlling one or more BTSs, between the BTS and the BSC
  • the interface is an Abis interface.
  • a BSC and one or more BTSs managed and controlled by it form a base station (BS).
  • the MS can roam freely.
  • the source base station (BS) coverage beyond the original access is exceeded, and other target BS coverage is required.
  • the MS is connected to the target BS by switching, and the user's call is kept uninterrupted.
  • the method for hard handover provided by the wireless cellular mobile network is: when the MS moves, it detects that the source BS signal has deteriorated to a certain threshold or detects a stronger and better signal of a new BS, and then reports it to the source.
  • the source BS needs to perform a hard handover according to a certain algorithm, and generates a handover application message to send
  • the mobile switching center (MSC) the MSC instructs the MS to perform handover, interrupts communication with the source BS, and attempts to establish a service connection with the target BS.
  • the hard handover is a "break-before-make" switching mode.
  • the hard-switching mode is versatile and suitable for various wireless cellular mobile network systems, and even switching between different wireless network systems.
  • the wireless air interface connection time between the MS and the new BS ie, the target BS
  • there is a significant connection interruption which leads to a decrease in service quality.
  • the instability of the wireless air interface signal after the handover The reliability of the successful establishment of the wireless air interface service link with the new BS is not high. If the service link cannot be established successfully with the new BS, the call drop is directly caused, resulting in a high rate of hard handover call drop.
  • the embodiment of the invention provides a method and system for switching and an MS, which has strong versatility, ensures continuity of communication, and effectively improves communication quality.
  • the embodiment of the present invention provides a method for handover.
  • the first service link is established between the source base station and the first transceiver of the mobile station, and includes the following steps:
  • a handover command is sent to instruct the mobile station to switch to the second service link.
  • the embodiment of the present invention further provides a method for switching, and a first service link is established between the source base station and the first transceiver of the mobile station, including the following steps:
  • the target base station uses the first transceiver, sending a handover request message to the target base station, requesting to establish a second service link between the target base station and the mobile station;
  • the target base station does not use the first transceiver, sending an assignment request to the target base station, requesting to establish a second service link between the target base station and the second transceiver of the mobile station, where the second service link includes an air interface
  • the sending handover command instructs the mobile station to switch to the second service link.
  • the embodiment of the invention further provides a method for switching, and a first industry has been established between the source base station and the first transceiver. Road, including the following steps:
  • the target base station After the target base station receives the assignment request according to the handover request, establishing a second service link between the second transceiver and the target base station;
  • the mobile switching center After receiving the message of the completion of the service link, the mobile switching center switches to the second service link according to a handover command from the mobile switching center.
  • the embodiment of the invention further provides a mobile station, including:
  • control unit configured to send a control signal and a switching signal
  • Two or more transceivers are respectively configured to establish a service link with the base station according to a control signal from the control unit;
  • a switching connection unit configured to control the service to be connected to the service link of the designated transceiver according to the switching signal from the control unit.
  • the embodiment of the present invention further provides a system for switching, and a first service link is established between the source base station and the first transceiver of the mobile station, including:
  • a source base station configured to generate a handover request
  • a mobile switching center configured to send an assignment request according to a handover request from the source base station, and send a handover command; and release a service link between the source base station and the MS after the handover is completed;
  • a target base station configured to establish a second service link with the second transceiver of the mobile station according to the assignment request from the mobile switching center, and feed back a service link completion message.
  • the method and system for switching according to the embodiment of the present invention establish an air interface service link between the target BS and the second transceiver of the MS before the handover command is sent, so that the call link can be directly switched to the second transceiver.
  • the switching interruption time is greatly reduced, and the problem of dropped calls during the switching process due to the instability of the air interface signal is effectively avoided, the continuity of the communication is ensured, and the communication quality is effectively improved.
  • the MS has multiple transceivers, and each transceiver is in a working state at the same time, and is independent of each other, and can establish a service link with the base station respectively.
  • the call link is directly connected. It is connected to the designated transceiver to complete the hard handover of the mobile station, without waiting for the connection of the air interface service link, greatly reducing the switching interruption time, and effectively avoiding the instability of the air interface signal.
  • the problem that causes the call drop during the handover process ensures the continuity of the communication and effectively improves the communication quality.
  • FIG. 1 is a flowchart of a method for switching in an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a system for switching in an embodiment of the present invention.
  • the wireless air interface service link is established in advance during the hard handover process, which not only greatly reduces the hard handover interruption time, but also effectively avoids the problem of dropped calls during the hard handover process due to the instability of the wireless air interface signal, and ensures The continuity of communication effectively improves communication quality.
  • the improved hard handover method of the embodiment of the present invention is highly versatile and is suitable for switching between various wireless cellular mobile network systems and even different wireless network systems.
  • the first service link is established between the source BS and the MS, and the method for switching, as shown in FIG. 1 , includes the following steps:
  • the MSC receives the handover request of the source BS;
  • the MSC sends an assignment request to the target BS according to the handover request, and requests the target BS to establish a second service link with the MS, where the second service link includes an air interface service link;
  • the MS receives the handover command and switches to the second service link.
  • the step of transmitting the handover command includes: transmitting the handover command only to the source BS, or transmitting the handover command only to the target BS, or simultaneously transmitting the handover command to the source BS and the target BS. At the same time, to the source, the handover command is sent to the target BS, and the reliability of the MS received message can be increased.
  • the above first service link is established between the source BS and the first transceiver of the MS.
  • the source BS sends a handover request according to the signal measurement result reported by the MS.
  • the MS can use the first transceiver to perform frequency signal search and measurement, and report the signal measurement result to the source BS.
  • the MS can also perform frequency signal search and measurement with a transceiver other than the first transceiver, such as a second transceiver, and report the signal measurement result to the source BS through the first transceiver.
  • a transceiver other than the first transceiver such as a second transceiver
  • the above second service link is specifically established between the target BS and the second transceiver of the MS.
  • the modes of the first transceiver and the second transceiver may be the same, and the modes of the first transceiver and the second transceiver are the same, for example, all of the GSM can be switched in the GSM system; or both are CDMA, Switching within a CDMA system; or both WCDMA, can be switched within a WCDMA system.
  • the modes of the first transceiver and the second transceiver can also be different, and switching can be implemented in various systems to further improve the versatility of mobile station switching.
  • the first transceiver is a second generation CDMA transceiver and the second transceiver is a third generation CDMA transceiver
  • a hard handover between the second generation CDMA and the third generation CDMA system can be implemented
  • the first transceiver is CDMA
  • the second transceiver is a GSM transceiver, and can implement hard handover between the CDMA and GSM systems
  • the first transceiver is a CDMA transceiver and the second transceiver is a WCDMA transceiver
  • the CDMA and WCDMA systems can be implemented. Hard switching between.
  • the message that the handover is completed is reported to the MSC; after receiving the message that the handover is completed, the MSC clears the first service link between the source BS and the MS.
  • Each transceiver in the above MS is in a working state at the same time, and is independent of each other, and the first transceiver is in a call state with the source BS, and other transceivers perform signal search and measurement in real time, and the MS finds that the transceiver reports the measurement.
  • the cell list information of the signal that is better than the source BS is reported to the source BS through the first transceiver, and the source BS carries the cell list information reported by the MS in the handover request message and reports
  • the MSC selects a cell carrier frequency as the handover target, and the MSC sends an assignment request to the target BS corresponding to the selected cell carrier frequency, thereby establishing a second of the target BS to another transceiver of the MS (for example, the second transceiver).
  • Service link which includes air interface service links. After the second service link is successfully established, the MSC sends a handover command to the MS, and the MS switches the call link to the second service link.
  • the mobile station can avoid the call drop in the hard handover process, and support the hard handover between the different frequencies and the hard handover between different bands, which can be applied to various wireless cellular mobile network systems and Different modes and different wireless network systems.
  • Embodiment 2 is described with an MS equipped with a first CDMA transceiver and a second CDMA transceiver. The case where equipped with other standard transceiver devices and equipped with more than two transceivers can be understood and implemented based on the idea of the present embodiment.
  • FIG. 2 it is a method for switching in this embodiment:
  • the source BS proposes to perform a hard handover to the target cell, and the source BS sends a handover request message with the cell list to the MSC.
  • the MS report in step 201 newly supports the common transceiver flag cell, and the handover request message also adds support for the common transceiver flag cell.
  • a common transceiver identifier is added to each element of the cell list: 1 indicates that the handover target cell and the current call link share a mobile station transceiver; 0 indicates that the handover target cell does not share the mobile station with the current call link. transceiver.
  • the MSC receives the handover request message, determines whether there is a support common transceiver identifier cell in the message, and sends a handover request message to the target BS if the common transceiver identifier cell or the common transceiver identifier cell indicates the common transceiver Performing a hard handover according to steps 102-114; if the common transceiver flag cell indicates a non-co-transceiver, sending an assignment request message to the target BS, indicating that the target BS establishes a connection with the second transceiver of the MS.
  • the target BS After receiving the assignment request message of the MSC, the target BS sends a channel assignment message to the MS, and uses a standard air interface channel assignment process to complete a service link between the target BS and the second transceiver of the MS.
  • the MS returns a TCH preamble response through the second transceiver.
  • the target BS sends a BS acknowledgment command with a layer 2 acknowledgment request to the MS on the forward traffic channel.
  • the MS After receiving the BS acknowledgment command, the MS transmits the MS acknowledgment command through the second transceiver and transmits the empty traffic channel data TCH data on the reverse traffic channel.
  • the target BS sends a service connection message to the MS to specify a service configuration for the call, and the MS starts specifying the service configuration to process the service at the second transceiver.
  • the MS After receiving the service connection message, the MS responds to the service connection completion message through the second transceiver.
  • the air interface service link between the target BS and the second transceiver of the MS is established. If the target BS ground link is established and fully interworking, the target BS sends an assignment completion message to the MSC.
  • the MSC prepares a handover from the source BS to the target BS, and simultaneously sends a handover command to the source BS and the target BS.
  • sending a handover command message from multiple BSs at the same time will increase the MS receiving the message.
  • the two steps are parallel. Subsequent messages can be sent on both service links at the same time, improving the reliability of the message.
  • the source BS and the target BS send an extended or general handover instruction message to the MS over the air interface.
  • the MS sends an MS acknowledgment command to the source BS or the target BS.
  • control unit of the MS switches the call link from the first transceiver to the second transceiver, and simultaneously sends a handover complete message to the source BS and the target BS.
  • the source BS or target BS sends a BS acknowledgment command to the MS.
  • the source BS or the target BS that received the handover complete message sends a handover complete message to the MSC, notifying the MSC that the MS has successfully completed the hard handover.
  • the MSC sends a clear command message to the source BS.
  • the source BS After the source BS releases the first service link with the first transceiver of the MS and releases its own terrestrial circuit and resources, it sends a Clear Complete message to the MSC to inform the MSC that the clearing process has been completed.
  • the corresponding switching system is set on the hardware, see FIG. 3, the source.
  • a first service link has been established between the BS and the first transceiver of the MS, including:
  • a source BS configured to generate a handover request
  • the MSC is configured to send a handover request according to the handover request, and send a handover command; and release the service link between the source BS and the MS after the handover is completed;
  • a target BS configured to establish a second service link with the second transceiver of the MSC according to the assignment request, and feed back a service link completion message
  • the MS is configured to switch to the second service link according to the handover command.
  • MS includes:
  • control unit configured to send a control signal and a switching signal
  • Two or more transceivers for establishing a service link with the BS according to the control signal Two or more transceivers for establishing a service link with the BS according to the control signal
  • the switching connection unit is configured to control the service to connect to the service link of the designated transceiver according to the switching signal.
  • the MS includes a first transceiver and a second transceiver.
  • MS's second transceiver package A search and measurement unit for frequency signal search and measurement.
  • the control unit can be directly used as an input/output device, or a user interface can be additionally provided to provide input and output devices.
  • the user can set the working mode and search frequency parameters of each transceiver through the user interface, and select the transceiver of the current call.
  • the control bus transmits signaling messages and control commands;
  • the data bus transmits service data, such as voice packets, data packets.
  • the control unit of the MS controls the multi-transceiver to perform frequency signal search and measurement according to the terminal setting or the BS indication, and reports the frequency signal strength to the BS.
  • a transceiver is used for a call, other transceivers can continue to search and measure the frequency signal.
  • the MS can set up a separate antenna for each transceiver, or a single antenna for multiple transceivers.
  • Signal separation and synthesis can be accomplished by providing a splitter/combiner between the transceiver and the antenna.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

A handover method in which a first service link has been established between a source base station and a first transceiver of a mobile station includes the following step: receiving a handover request from the source base station; transmitting an assignation request to a target base station according to the handover request, and establishing a second service link between the target and the second transceiver of the mobile station; transmitting a handover command to indicate the mobile station to switch to the second service link after receiving the message of the service link completing. And the handover method, system and MS establish the air interface service link between the target base station and the mobile station before the handover command is transmitted, accordingly the handover could be performed directly, and the connection of the air interface service link need not be waited, and the handover interrupting time could be greatly reduced, and the problem of losing call in handover procedure caused by the instability of the air interface signal could be avoided efficiently, and the continuity of the communication could be assured, the communication quality is raising efficiently.

Description

切换的方法及***和移动台  Switching method and system and mobile station
本申请要求于 2007年 6月 4日提交中国专利局、申请号为 200710111730.9、 发明名称为"切换的方法及***和移动台"的中国专利申请的优先权，其全部内 容通过引用结合在本申请中。  The present application claims the priority of the Chinese Patent Application No. 200710111730.9, the disclosure of which is incorporated herein by reference. in.
技术领域 Technical field
本发明涉及无线接入领域， 尤其涉及切换的方法及***和移动台 （MS )。  The present invention relates to the field of wireless access, and in particular, to a method and system for handover and a mobile station (MS).
背景技术 Background technique
无线蜂窝网络***主要包括移动台 （MS )、 基站 （BS )、 移动交换中心 ( MSC )、 外部网络和负责移动性管理的功能实体几部分。 其中， MS 的主要 功能是在用户端终止无线电波的传播路径，并且确保用户能够通过网络获得服 务， 它与 BS通过 Um接口相连接； BS的主要功能是结束无线电波传播路径 并连接到 MSC, 它与 MSC之间的接口为 A接口； MSC负责来自无线网络用 户和有线网络或其他无线网络之间业务的转换；负责移动性管理的功能实体主 要进行 MS的移动性管理， 它主要包括归属位置寄存器（HLR )、 访问位置寄 存器（VLR ) 以及鉴权中心 （AC )等等； 而外部网络主要是指公共交换电话 网 （PSTN )和综合业务数字网 （ISDN )等等。  The wireless cellular network system mainly includes a mobile station (MS), a base station (BS), a mobile switching center (MSC), an external network, and functional entities responsible for mobility management. The main function of the MS is to terminate the propagation path of the radio wave at the user end, and to ensure that the user can obtain the service through the network, which is connected with the BS through the Um interface; the main function of the BS is to end the radio wave propagation path and connect to the MSC. The interface between the MSC and the MSC is the A interface; the MSC is responsible for the conversion of the service between the wireless network user and the wired network or other wireless network; the functional entity responsible for the mobility management mainly performs the mobility management of the MS, which mainly includes the home location. The register (HLR), the visitor location register (VLR), and the authentication center (AC), etc.; and the external network mainly refers to the Public Switched Telephone Network (PSTN) and the Integrated Services Digital Network (ISDN) and the like.
在上述的功能实体中 , BS经常被分割安装到基站控制器（ BSC )和基站收 发信机（BTS ) 中。 其中， BTS由配置在同一位置的一个或者多个收发信机组 成， 它们在网络端结束无线电波传播路径， 而 BSC是对一个或多个 BTS进行管 理和控制的***， BTS和 BSC之间的接口为 Abis接口。在通常情况下，一个 BSC 和一个或者多个由它管理和控制的 BTS组成基站（BS )。  Among the above functional entities, the BS is often split and installed in a base station controller (BSC) and a base transceiver station (BTS). Wherein, the BTS is composed of one or more transceivers arranged at the same location, which end the radio wave propagation path at the network end, and the BSC is a system for managing and controlling one or more BTSs, between the BTS and the BSC The interface is an Abis interface. Under normal circumstances, a BSC and one or more BTSs managed and controlled by it form a base station (BS).
在无线蜂窝移动网络中， MS可以任意漫游， 在用户通话过程中， 由于 MS 的移动而导致超出原有接入的源基站（BS )覆盖范围， 而进入其他的目标 BS 覆盖范围， 此时需要通过切换使 MS与目标 BS进行连接通信， 保持用户通话的 不间断。  In a wireless cellular mobile network, the MS can roam freely. During the user's call, due to the MS's movement, the source base station (BS) coverage beyond the original access is exceeded, and other target BS coverage is required. The MS is connected to the target BS by switching, and the user's call is kept uninterrupted.
目前， 无线蜂窝移动网络提供的硬切换的方法为： 当 MS移动时， 检测到 源 BS信号变差到某一门限或检测到一个新的 BS更强更好的信号后， 就会上报 给源 BS, 源 BS根据一定算法判决需要执行硬切换， 生成切换申请消息发送给 移动交换中心（MSC ) , MSC则指示 MS进行切换， 中断与源 BS通信， 并尝试 与目标 BS建立业务连接。 At present, the method for hard handover provided by the wireless cellular mobile network is: when the MS moves, it detects that the source BS signal has deteriorated to a certain threshold or detects a stronger and better signal of a new BS, and then reports it to the source. BS, the source BS needs to perform a hard handover according to a certain algorithm, and generates a handover application message to send The mobile switching center (MSC), the MSC instructs the MS to perform handover, interrupts communication with the source BS, and attempts to establish a service connection with the target BS.
硬切换属于"先断后接"的切换方式， 硬切换方式通用性强， 适用于各种无 线蜂窝移动网络***， 甚至是不同无线网络***之间的切换。 但是， 一方面由 于 MS与新 BS (即目标 BS )之间建立无线空口连接时间较长， 存在明显地连接 中断， 从而导致服务质量下降； 另一方面由于无线空口信号的不稳定性， 切换 后能与新 BS成功建立无线空口业务链路的可靠性并不高， 若与新 BS无法成功 建立业务链路则直接导致掉话， 导致硬切换掉话率较高。  The hard handover is a "break-before-make" switching mode. The hard-switching mode is versatile and suitable for various wireless cellular mobile network systems, and even switching between different wireless network systems. However, on the one hand, because the wireless air interface connection time between the MS and the new BS (ie, the target BS) is long, there is a significant connection interruption, which leads to a decrease in service quality. On the other hand, due to the instability of the wireless air interface signal, after the handover The reliability of the successful establishment of the wireless air interface service link with the new BS is not high. If the service link cannot be established successfully with the new BS, the call drop is directly caused, resulting in a high rate of hard handover call drop.
发明内容 Summary of the invention
本发明实施例提供了切换的方法及***和 MS, 通用性强， 保证了通信的 连续性， 有效提升通信质量。  The embodiment of the invention provides a method and system for switching and an MS, which has strong versatility, ensures continuity of communication, and effectively improves communication quality.
本发明实施例提供切换的方法，源基站与移动台的第一收发器之间已建立 第一业务链路， 包括如下步骤：  The embodiment of the present invention provides a method for handover. The first service link is established between the source base station and the first transceiver of the mobile station, and includes the following steps:
接收源基站的切换申请；  Receiving a handover request of the source base station;
根据所述切换申请， 向目标基站发送指配请求， 建立所述目标基站与移动 台的第二收发器之间的第二业 路；  And sending, according to the handover request, an assignment request to the target base station, and establishing a second industry path between the target base station and the second transceiver of the mobile station;
接收业务链路完成的消息后 ,发送切换命令指示所述移动台切换到所述第 二业务链路。  After receiving the message of the completion of the service link, a handover command is sent to instruct the mobile station to switch to the second service link.
本发明实施例还提供切换的方法，源基站与移动台的第一收发器之间已建 立第一业务链路， 包括如下步骤：  The embodiment of the present invention further provides a method for switching, and a first service link is established between the source base station and the first transceiver of the mobile station, including the following steps:
接收源基站的切换申请；  Receiving a handover request of the source base station;
根据所述切换申请， 判断目标基站是否使用第一收发器；  Determining, according to the handover request, whether the target base station uses the first transceiver;
如果目标基站使用第一收发器 , 向所述目标基站发送切换请求消息 ,请求 建立所述目标基站与移动台之间的第二业务链路；  And if the target base station uses the first transceiver, sending a handover request message to the target base station, requesting to establish a second service link between the target base station and the mobile station;
如果目标基站不使用第一收发器， 向目标基站发送指配请求，请求建立所 述目标基站与移动台的第二收发器之间的第二业务链路，所述第二业务链路包 括空口业务链路；接收业务链路完成的消息后，发送切换命令指示所述移动台 切换到所述第二业务链路上。  If the target base station does not use the first transceiver, sending an assignment request to the target base station, requesting to establish a second service link between the target base station and the second transceiver of the mobile station, where the second service link includes an air interface After receiving the service link completion message, the sending handover command instructs the mobile station to switch to the second service link.
本发明实施例还提供切换的方法，源基站与第一收发器之间已建立第一业 路， 包括如下步骤： The embodiment of the invention further provides a method for switching, and a first industry has been established between the source base station and the first transceiver. Road, including the following steps:
向所述源基站上报的信号搜索和测量结果，所述信号搜索和测量结果用于 所述源基站生成切换申请；  a signal search and measurement result reported to the source base station, where the signal search and measurement result is used by the source base station to generate a handover request;
在目标基站根据接收到根据所述切换申请的指配请求后，建立第二收发器 与所述目标基站之间的第二业务链路；  After the target base station receives the assignment request according to the handover request, establishing a second service link between the second transceiver and the target base station;
在移动交换中心接收业务链路完成的消息后，根据来自所述移动交换中心 的切换命令切换到所述第二业务链路。  After receiving the message of the completion of the service link, the mobile switching center switches to the second service link according to a handover command from the mobile switching center.
本发明实施例还提供移动台， 包括：  The embodiment of the invention further provides a mobile station, including:
控制单元， 用于发送控制信号和切换信号；  a control unit, configured to send a control signal and a switching signal;
两个或两个以上的收发器， 分别用于^^据来自所述控制单元的控制信号， 建立与基站之间的业务链路；  Two or more transceivers are respectively configured to establish a service link with the base station according to a control signal from the control unit;
交换连接单元， 用于根据来自所述控制单元的切换信号，控制业务搭接到 指定收发器的业务链路上。  And a switching connection unit, configured to control the service to be connected to the service link of the designated transceiver according to the switching signal from the control unit.
本发明实施例还提供切换的***，源基站与移动台的第一收发器之间已建 立第一业务链路， 包括：  The embodiment of the present invention further provides a system for switching, and a first service link is established between the source base station and the first transceiver of the mobile station, including:
源基站， 用于生成切换申请；  a source base station, configured to generate a handover request;
移动交换中心， 用于根据来自所述源基站的切换申请发送指配请求，发送 切换命令； 并在收到切换完成后释放源基站与 MS的业务链路；  a mobile switching center, configured to send an assignment request according to a handover request from the source base station, and send a handover command; and release a service link between the source base station and the MS after the handover is completed;
目标基站， 用于根据来自所述移动交换中心的指配请求， 建立与所述移动 台的第二收发器之间的第二业务链路， 并反馈业务链路完成消息。  And a target base station, configured to establish a second service link with the second transceiver of the mobile station according to the assignment request from the mobile switching center, and feed back a service link completion message.
本发明实施例提供的切换的方法及***，在切换命令发送之前，先建立目 标 BS与 MS的第二收发器之间的空口业务链路， 从而可以将通话链路直接切 换到第二收发器上， 无需等待空口业务链路的连接， 大大减少切换中断时间， 而且有效避免了由于空口信号不稳定导致切换过程中掉话的问题，保证了通信 的连续性， 有效提升通信质量。  The method and system for switching according to the embodiment of the present invention establish an air interface service link between the target BS and the second transceiver of the MS before the handover command is sent, so that the call link can be directly switched to the second transceiver. In the above, there is no need to wait for the connection of the air interface service link, the switching interruption time is greatly reduced, and the problem of dropped calls during the switching process due to the instability of the air interface signal is effectively avoided, the continuity of the communication is ensured, and the communication quality is effectively improved.
采用第三方面提供的 MS, MS存在多收发器， 各收发器同时都处于工作 状态，彼此之间相互独立，可以分别与基站之间建立业务链路，在需要切换时， 直接将通话链路搭接到指定的收发器上而完成移动台的硬切换，无需等待空口 业务链路的连接， 大大减少切换中断时间， 而且有效避免了由于空口信号不稳 定导致切换过程中掉话的问题， 保证了通信的连续性， 有效提升通信质量。 附图说明 With the MS provided by the third aspect, the MS has multiple transceivers, and each transceiver is in a working state at the same time, and is independent of each other, and can establish a service link with the base station respectively. When the handover is needed, the call link is directly connected. It is connected to the designated transceiver to complete the hard handover of the mobile station, without waiting for the connection of the air interface service link, greatly reducing the switching interruption time, and effectively avoiding the instability of the air interface signal. The problem that causes the call drop during the handover process ensures the continuity of the communication and effectively improves the communication quality. DRAWINGS
图 1为本发明一实施例中切换的方法的流程图；  1 is a flowchart of a method for switching in an embodiment of the present invention;
图 2为本发明另一实施例中切换的方法的流程图；  2 is a flowchart of a method for switching in another embodiment of the present invention;
图 3为本发明一实施例中切换的***的结构示意图。  FIG. 3 is a schematic structural diagram of a system for switching in an embodiment of the present invention.
具体实施方式 detailed description
本发明实施例在硬切换过程中提前建立好无线空口业务链路，不仅可以大 大减少硬切换中断时间，而且有效的避免了由于无线空口信号不稳定性导致硬 切换过程中掉话的问题， 保证了通信的连续性， 有效提升通信质量。 本发明实 施例改进的硬切换方法通用性强，适用于各种无线蜂窝移动网络***，甚至是 不同无线网络***之间的切换。  In the embodiment of the present invention, the wireless air interface service link is established in advance during the hard handover process, which not only greatly reduces the hard handover interruption time, but also effectively avoids the problem of dropped calls during the hard handover process due to the instability of the wireless air interface signal, and ensures The continuity of communication effectively improves communication quality. The improved hard handover method of the embodiment of the present invention is highly versatile and is suitable for switching between various wireless cellular mobile network systems and even different wireless network systems.
实施例一， 源 BS与 MS之间已建立第一业务链路， 切换的方法， 参见图 1 , 包括如下步骤：  In the first embodiment, the first service link is established between the source BS and the MS, and the method for switching, as shown in FIG. 1 , includes the following steps:
1、 MSC接收源 BS的切换申请；  1. The MSC receives the handover request of the source BS;
2、 MSC根据此切换申请， 向目标 BS发送指配请求， 请求目标 BS与 MS 建立第二业务链路， 第二业务链路中包括空口业务链路；  2. The MSC sends an assignment request to the target BS according to the handover request, and requests the target BS to establish a second service link with the MS, where the second service link includes an air interface service link;
3、 目标 BS与 MS建立业务链路完成后，通知 MSC， MSC发送切换命令， 执行切换；  3. After the target BS and the MS establish a service link, notify the MSC that the MSC sends a handover command to perform handover.
4、 MS收到切换命令， 切换到第二业务链路上。  4. The MS receives the handover command and switches to the second service link.
以上发送切换命令的步骤包括： 仅向源 BS发送切换命令， 或者， 仅向目 标 BS发送切换命令， 或者同时向源 BS和目标 BS发送切换命令。 同时向源 者， 相对于仅向目标 BS发送切换命令， 可以增加 MS收到消息的可靠性。  The step of transmitting the handover command includes: transmitting the handover command only to the source BS, or transmitting the handover command only to the target BS, or simultaneously transmitting the handover command to the source BS and the target BS. At the same time, to the source, the handover command is sent to the target BS, and the reliability of the MS received message can be increased.
以上的第一业务链路建立在源 BS与 MS的第一收发器之间。  The above first service link is established between the source BS and the first transceiver of the MS.
源 BS根据 MS上报的信号测量结果， 发送切换申请。  The source BS sends a handover request according to the signal measurement result reported by the MS.
MS可以用第一收发器进行频率信号搜索和测量， 并将信号测量结果上报 给源 BS。  The MS can use the first transceiver to perform frequency signal search and measurement, and report the signal measurement result to the source BS.
MS还可以用除第一收发器之外的其他收发器， 例如第二收发器进行频率 信号搜索和测量， 并通过第一收发器将信号测量结果上报给源 BS。 第一收发 器用于通话，其他的收发器进行频率信号搜索和测量的实现方式，避免了一个 收发器既要在某一频率保持当前通话，又要在适当时机切换至另一频率进行信 号测量的冲突， 从而提高用户通话质量。 The MS can also perform frequency signal search and measurement with a transceiver other than the first transceiver, such as a second transceiver, and report the signal measurement result to the source BS through the first transceiver. First transceiver Used for talking, other transceivers implement frequency signal search and measurement, avoiding a transceiver that maintains the current call at a certain frequency and switches to another frequency at the appropriate time for signal measurement conflict. Improve user call quality.
以上的第二业务链路具体建立在目标 BS与 MS的第二收发器之间。  The above second service link is specifically established between the target BS and the second transceiver of the MS.
其中的第一收发器和第二收发器的模式可以相同，第一收发器和第二收发 器的模式相同， 比如都是 GSM, 则可以在 GSM***内进行切换； 或者都是 CDMA, 则可以在 CDMA ***内进行切换； 或者都是 WCDMA, 则可以在 WCDMA***内进行切换。  The modes of the first transceiver and the second transceiver may be the same, and the modes of the first transceiver and the second transceiver are the same, for example, all of the GSM can be switched in the GSM system; or both are CDMA, Switching within a CDMA system; or both WCDMA, can be switched within a WCDMA system.
第一收发器和第二收发器的模式也可以不同，则可以在各种***中实现切 换，进一步提高移动台切换的通用性。例如第一收发器为第二代 CDMA收发器， 第二收发器为第三代 CDMA收发器，则可以实现第二代 CDMA与第三代 CDMA ***间的硬切换； 如果第一收发器为 CDMA收发器， 第二收发器为 GSM收发 器， 则可以实现 CDMA与 GSM***间的硬切换； 若第一收发器为 CDMA收发 器， 第二收发器为 WCDMA收发器， 则可以实现 CDMA与 WCDMA***间的硬 切换。  The modes of the first transceiver and the second transceiver can also be different, and switching can be implemented in various systems to further improve the versatility of mobile station switching. For example, if the first transceiver is a second generation CDMA transceiver and the second transceiver is a third generation CDMA transceiver, a hard handover between the second generation CDMA and the third generation CDMA system can be implemented; if the first transceiver is CDMA The transceiver, the second transceiver is a GSM transceiver, and can implement hard handover between the CDMA and GSM systems; if the first transceiver is a CDMA transceiver and the second transceiver is a WCDMA transceiver, the CDMA and WCDMA systems can be implemented. Hard switching between.
MS切换到第二业务链路上之后， 向 MSC上报切换完成的消息； MSC收 到切换完成的消息之后， 清除源 BS与 MS之间的第一业务链路。  After the MS switches to the second service link, the message that the handover is completed is reported to the MSC; after receiving the message that the handover is completed, the MSC clears the first service link between the source BS and the MS.
以上 MS中各收发器同时处于工作状态， 彼此之间相互独立， 而第一收发 器与源 BS之间处于通话状态， 其它收发器实时进行信号搜索和测量， 当 MS发 现存在收发器上报的测量信号强度相对于源 BS更强更好时， 将优于源 BS的信 号的小区列表信息通过第一收发器上报给源 BS,源 BS将 MS上报的小区列表信 息携带在切换申请消息中上报给 MSC, MSC从中选择一个小区载频作为切换 目标， MSC在选择的小区载频对应的目标 BS下发指配请求， 从而建立目标 BS 到 MS的另一收发器（例如第二收发器） 的第二业务链路， 其中包括空口业务 链路。 在第二业务链路成功建立后， MSC给 MS下发切换命令， MS将通话链路 切换到第二业务链路上。  Each transceiver in the above MS is in a working state at the same time, and is independent of each other, and the first transceiver is in a call state with the source BS, and other transceivers perform signal search and measurement in real time, and the MS finds that the transceiver reports the measurement. When the signal strength is stronger than that of the source BS, the cell list information of the signal that is better than the source BS is reported to the source BS through the first transceiver, and the source BS carries the cell list information reported by the MS in the handover request message and reports The MSC, the MSC selects a cell carrier frequency as the handover target, and the MSC sends an assignment request to the target BS corresponding to the selected cell carrier frequency, thereby establishing a second of the target BS to another transceiver of the MS (for example, the second transceiver). Service link, which includes air interface service links. After the second service link is successfully established, the MSC sends a handover command to the MS, and the MS switches the call link to the second service link.
采用本实施例中的方法，可以避免移动台在硬切换过程中的掉话， 而且支 持异频之间的硬切换和不同波段之间的硬切换，可以适用于各种无线蜂窝移动 网络***以及不同模式和不同的无线网络***。 实施例二，以装备第一 CDMA收发器和第二 CDMA收发器的 MS进行说 明。装备有其他制式收发器装置和装备有多于两个收发器的情况， 都可以基于 本实施例的思路去理解和实现。 By adopting the method in this embodiment, the mobile station can avoid the call drop in the hard handover process, and support the hard handover between the different frequencies and the hard handover between different bands, which can be applied to various wireless cellular mobile network systems and Different modes and different wireless network systems. Embodiment 2 is described with an MS equipped with a first CDMA transceiver and a second CDMA transceiver. The case where equipped with other standard transceiver devices and equipped with more than two transceivers can be understood and implemented based on the idea of the present embodiment.
参见图 2， 是本实施例切换的方法：  Referring to FIG. 2, it is a method for switching in this embodiment:
201. 根据 MS的报告， 源 BS建议进行至目标小区的硬切换， 源 BS向 MSC 发送带小区列表的切换申请消息。 与现有技术步骤 101相比， 步骤 201中的 MS 的报告新增支持共收发器标志信元，切换申请消息也新增支持共收发器标志信 元。 具体实现时， 在小区列表的每个元素中增加一个共收发器标识： 1表示切 换目标小区与当前通话链路共同一个移动台收发器； 0表示切换目标小区与当 前通话链路不共用移动台收发器。  201. According to the report of the MS, the source BS proposes to perform a hard handover to the target cell, and the source BS sends a handover request message with the cell list to the MSC. Compared with the prior art step 101, the MS report in step 201 newly supports the common transceiver flag cell, and the handover request message also adds support for the common transceiver flag cell. In a specific implementation, a common transceiver identifier is added to each element of the cell list: 1 indicates that the handover target cell and the current call link share a mobile station transceiver; 0 indicates that the handover target cell does not share the mobile station with the current call link. transceiver.
202. MSC收到切换申请消息， 判断消息中是否存在支持共收发器标志信 元， 若不存在共收发器标志信元或共收发器标志信元指示共收发器则向目标 BS发送切换请求消息， 按照步骤 102-114完成硬切换； 若共收发器标志信元指 示不共收发器则向目标 BS发送指配请求消息，指示目标 BS与 MS的第二收发器 建立连接。  202. The MSC receives the handover request message, determines whether there is a support common transceiver identifier cell in the message, and sends a handover request message to the target BS if the common transceiver identifier cell or the common transceiver identifier cell indicates the common transceiver Performing a hard handover according to steps 102-114; if the common transceiver flag cell indicates a non-co-transceiver, sending an assignment request message to the target BS, indicating that the target BS establishes a connection with the second transceiver of the MS.
203. 收到 MSC的指配请求消息后， 目标 BS向 MS下发信道指配消息， 利 用标准的空口信道指配流程完成目标 BS与 MS的第二收发器之间建立业务链 路。  203. After receiving the assignment request message of the MSC, the target BS sends a channel assignment message to the MS, and uses a standard air interface channel assignment process to complete a service link between the target BS and the second transceiver of the MS.
204. MS通过第二收发器返回 TCH前同步响应。  204. The MS returns a TCH preamble response through the second transceiver.
205. 目标 BS在前向业务信道上向 MS发送带层 2证实请求的 BS证实指令。 205. The target BS sends a BS acknowledgment command with a layer 2 acknowledgment request to the MS on the forward traffic channel.
206. MS收到 BS证实指令后， 通过第二收发器发送 MS证实指令并且在反 向业务信道上传送空的业务信道数据空 TCH数据。 206. After receiving the BS acknowledgment command, the MS transmits the MS acknowledgment command through the second transceiver and transmits the empty traffic channel data TCH data on the reverse traffic channel.
207. 目标 BS向 MS发送业务连接消息， 以指定用于呼叫的业务配置， MS 开始 指定的业务配置在第二收发器处理业务。  207. The target BS sends a service connection message to the MS to specify a service configuration for the call, and the MS starts specifying the service configuration to process the service at the second transceiver.
208. 收到业务连接消息后， MS通过第二收发器响应业务连接完成消息。 208. After receiving the service connection message, the MS responds to the service connection completion message through the second transceiver.
209. 目标 BS与 MS的第二收发器之间空口业务链路建立完毕， 若目标 BS 地面链路均建立并且完全互通后， 目标 BS向 MSC发送指配完成消息。 209. The air interface service link between the target BS and the second transceiver of the MS is established. If the target BS ground link is established and fully interworking, the target BS sends an assignment completion message to the MSC.
210. ~ 210，MSC准备从源 BS至目标 BS的切换， 并同时向源 BS和目标 BS 发送切换命令。 很明显， 同时从多个 BS发送切换命令消息将增加 MS收到消息 的可能性。 这里 210和 210，两个步骤是并行的。 后续的消息与此类似， 都可以 同时在两个业务链路上发送， 提高消息的可靠性。 210. ~ 210, the MSC prepares a handover from the source BS to the target BS, and simultaneously sends a handover command to the source BS and the target BS. Obviously, sending a handover command message from multiple BSs at the same time will increase the MS receiving the message. The possibility. Here 210 and 210, the two steps are parallel. Subsequent messages can be sent on both service links at the same time, improving the reliability of the message.
211. ~ 211' 源 BS和目标 BS在空中接口上向 MS发送扩展或通用切换指 令消息。  211. ~ 211' The source BS and the target BS send an extended or general handover instruction message to the MS over the air interface.
212. ~ 212' MS向源 BS或目标 BS发送 MS证实指令。  212. ~ 212' The MS sends an MS acknowledgment command to the source BS or the target BS.
213. ~ 213， MS的控制单元将通话链路从第一收发器切换至第二收发器， 完成后向源 BS和目标 BS同时发送切换完成消息。  213. ~ 213, the control unit of the MS switches the call link from the first transceiver to the second transceiver, and simultaneously sends a handover complete message to the source BS and the target BS.
214. ~ 214' 源 BS或目标 BS向 MS发送 BS证实指令。  214. ~ 214' The source BS or target BS sends a BS acknowledgment command to the MS.
215. ~ 215' 收到切换完成消息的源 BS或目标 BS向 MSC发送切换完成消 息， 向 MSC通知 MS已经成功完成了硬切换。  215. ~ 215' The source BS or the target BS that received the handover complete message sends a handover complete message to the MSC, notifying the MSC that the MS has successfully completed the hard handover.
216. MSC向源 BS发送清除命令消息。  216. The MSC sends a clear command message to the source BS.
217. 源 BS将与 MS的第一收发器间的第一业务链路释放， 同时释放自己 的地面电路和资源后， 向 MSC发送清除完成消息， 通知 MSC清除处理已经完 成。  217. After the source BS releases the first service link with the first transceiver of the MS and releases its own terrestrial circuit and resources, it sends a Clear Complete message to the MSC to inform the MSC that the clearing process has been completed.
对于实施例一中的方法， 在硬件上设置相应的切换的***， 参见图 3， 源 For the method in the first embodiment, the corresponding switching system is set on the hardware, see FIG. 3, the source.
BS与 MS的第一收发器之间已建立第一业务链路， 包括： A first service link has been established between the BS and the first transceiver of the MS, including:
源 BS， 用于生成切换申请；  a source BS, configured to generate a handover request;
MSC, 用于根据切换申请发送指配请求，发送切换命令； 并在收到切换完 成后释放源 BS与 MS的业务链路；  The MSC is configured to send a handover request according to the handover request, and send a handover command; and release the service link between the source BS and the MS after the handover is completed;
目标 BS,用于 据指配请求，建立与 MSC的第二收发器之间的第二业务 链路， 并反馈业务链路完成消息；  a target BS, configured to establish a second service link with the second transceiver of the MSC according to the assignment request, and feed back a service link completion message;
MS, 用于根据切换命令， 切换到第二业务链路上。  The MS is configured to switch to the second service link according to the handover command.
其中， MS包括：  Among them, MS includes:
控制单元， 用于发送控制信号和切换信号；  a control unit, configured to send a control signal and a switching signal;
两个或两个以上的收发器， 分别用于根据控制信号， 建立与 BS之间的业 务链路；  Two or more transceivers for establishing a service link with the BS according to the control signal;
交换连接单元， 用于根据切换信号，控制业务搭接到指定收发器的业务链 路上。  The switching connection unit is configured to control the service to connect to the service link of the designated transceiver according to the switching signal.
在本实施例中， MS包括第一收发器和第二收发器。 MS的第二收发器包 括搜索和测量单元， 用于进行频率信号搜索和测量。 In this embodiment, the MS includes a first transceiver and a second transceiver. MS's second transceiver package A search and measurement unit for frequency signal search and measurement.
可以直接用控制单元作为输入输出装置，也可以另外设置用户接口提供输 入和输出装置，用户可以通过用户接口设置各收发器的工作模式和搜索频率参 数， 选择当前通话的收发器。  The control unit can be directly used as an input/output device, or a user interface can be additionally provided to provide input and output devices. The user can set the working mode and search frequency parameters of each transceiver through the user interface, and select the transceiver of the current call.
控制总线传输信令消息和控制命令； 数据总线传输业务数据， 如语音包， 数据包。  The control bus transmits signaling messages and control commands; the data bus transmits service data, such as voice packets, data packets.
本领域的技术人员可以理解，上述的各个单元可以通过软件、硬件或两者 组合的方法来提供，尽管上述的各个部件在图中是作为离散单元给出的，但实 际上， 它们可以由包含输入和输出端口并运行软件代码的微处理器，或者由定 制或混合的芯片， 或者由离散部件， 或者由上述的组合来实施。 例如多收发器 可以被包含在一个处理器内完成，各收发器作为一种软件模块的形式集成在处 理器内。  Those skilled in the art will appreciate that the various units described above may be provided by software, hardware, or a combination of both, although the various components described above are presented as discrete units in the figures, but in practice they may be included The microprocessor that inputs and outputs the port and runs the software code, either by a custom or hybrid chip, or by discrete components, or by a combination of the above. For example, multiple transceivers can be implemented in one processor, with each transceiver being integrated into the processor as a software module.
MS的控制单元根据终端设置或 BS指示， 控制多收发器分别进行频率信号 搜索和测量， 并将各频率信号强度报告给 BS。 当一个收发器被用于通话时， 其他的收发器可以继续进行频率信号搜索和测量。  The control unit of the MS controls the multi-transceiver to perform frequency signal search and measurement according to the terminal setting or the BS indication, and reports the frequency signal strength to the BS. When a transceiver is used for a call, other transceivers can continue to search and measure the frequency signal.
MS可以每个收发器设置独立的天线， 也可以多收发器共一个天线， 通过 收发器与天线之间设置分工器 /合路器来完成信号分离和合成。  The MS can set up a separate antenna for each transceiver, or a single antenna for multiple transceivers. Signal separation and synthesis can be accomplished by providing a splitter/combiner between the transceiver and the antenna.
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到本发明 可借助软件加必需的硬件平台的方式来实现， 当然也可以全部通过硬件来实 施。基于这样的理解，本发明的技术方案对背景技术做出贡献的全部或者部分 可以以软件产品的形式体现出来， 该计算机软件产品可以存储在存储介质中， 如 ROM/RAM、磁碟、 光盘等， 包括若干指令用以使得一台计算机设备（可以 是个人计算机， 服务器， 或者网络设备等）执行本发明各个实施例或者实施例 的某些部分所述的方法。  Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course, all can be implemented by hardware. Based on such understanding, all or part of the technical solution of the present invention contributing to the background art may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, or the like. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.
以上所述仅是本发明的具体实施方式，应当指出，对于本技术领域的普通 技术人员来说， 在不脱离本发明原理的前提下， 还可以作出若干改进和润饰， 这些改进和润饰也应视为本发明的保护范围。  The above is only a specific embodiment of the present invention, and it should be noted that those skilled in the art can also make some improvements and retouching without departing from the principles of the present invention. It is considered as the scope of protection of the present invention.

Claims

权 利 要 求 Rights request
1、切换的方法， 源基站与移动台的第一收发器之间已建立第一业务链路， 其特征在于， 包括如下步骤：  The method of switching, the first service link is established between the source base station and the first transceiver of the mobile station, and the method includes the following steps:
接收源基站的切换申请；  Receiving a handover request of the source base station;
根据所述切换申请， 向目标基站发送指配请求， 建立所述目标基站与移动 台的第二收发器之间的第二业 路；  And sending, according to the handover request, an assignment request to the target base station, and establishing a second industry path between the target base station and the second transceiver of the mobile station;
接收业务链路完成的消息后 ,发送切换命令指示所述移动台切换到所述第 二业务链路。  After receiving the message of the completion of the service link, a handover command is sent to instruct the mobile station to switch to the second service link.
2、根据权利要求 1所述的方法， 其特征在于， 所述建立所述目标基站与移 动台的第二收发器之间的第二业务链路的步骤包括：  The method according to claim 1, wherein the step of establishing a second service link between the target base station and a second transceiver of the mobile station comprises:
收到指配请求后， 所述目标基站向所述移动台下发信道指配消息； 所述目标基站接收所述移动台通过第二收发器返回的 TCH前同步响应； 所述目标基站在前向业务信道上向所述移动台发送基站证实指令； 所述目标基站接收所述移动台通过第二收发器发送的移动台证实指令，并 且在反向业务信道上接收来自所述移动台的业务信道数据空 TCH数据；  After receiving the assignment request, the target base station sends a channel assignment message to the mobile station; the target base station receives a TCH pre-sync response returned by the mobile station through the second transceiver; Transmitting, to the mobile station, a base station confirmation command to the mobile station; the target base station receiving a mobile station confirmation command sent by the mobile station through the second transceiver, and receiving a service from the mobile station on a reverse traffic channel Channel data empty TCH data;
所述目标基站向所述移动台发送业务连接消息，以指定用于呼叫的业务配 置；  The target base station sends a service connection message to the mobile station to specify a service configuration for the call;
所述目标基站接收所述移动台通过第二收发器响应的业务连接完成消息。 The target base station receives a service connection completion message that the mobile station responds through the second transceiver.
3、 根据权利要求 1所述的方法， 其特征在于， 所述发送切换命令的步骤 包括： 3. The method according to claim 1, wherein the step of transmitting a handover command comprises:
向源基站发送切换命令，所述切换命令用于所述源基站通过第一业务链路 发送给所述移动台； 或者，  Sending a handover command to the source base station, where the handover command is used by the source base station to send to the mobile station by using a first service link; or
向目标基站发送切换命令，所述切换命令用于所述目标基站通过第二业务 链路发送给所述移动台； 或者，  And transmitting, to the target base station, a handover command, where the handover command is used by the target base station to send to the mobile station by using a second service link; or
向源基站和目标基站发送切换命令，所述切换命令用于所述源基站通过第 一业务链路发送给所述移动台，所述切换命令用于所述目标基站通过第二业务 链路发送给所述移动台。  Sending a handover command to the source base station and the target base station, where the handover command is used by the source base station to send to the mobile station by using a first service link, where the handover command is used by the target base station to send by using a second service link. Give the mobile station.
4、 根据权利要求 1所述的方法， 其特征在于， 所述接收源基站的切换申 请包括：  The method according to claim 1, wherein the handover request of the receiving source base station comprises:
接收所述源基站根据移动台上报的信号搜索和测量结果发送的切换申请。 And receiving, by the source base station, a handover request sent according to a signal search and a measurement result reported by the mobile station.
5、切换的方法， 源基站与移动台的第一收发器之间已建立第一业务链路， 其特征在于， 包括如下步骤： 5. The handover method, the first service link is established between the source base station and the first transceiver of the mobile station, It is characterized in that it comprises the following steps:
接收源基站的切换申请；  Receiving a handover request of the source base station;
根据所述切换申请， 判断目标基站是否使用第一收发器；  Determining, according to the handover request, whether the target base station uses the first transceiver;
如果目标基站使用第一收发器 , 向所述目标基站发送切换请求消息 ,请求 建立所述目标基站与移动台之间的第二业务链路；  And if the target base station uses the first transceiver, sending a handover request message to the target base station, requesting to establish a second service link between the target base station and the mobile station;
如果目标基站不使用第一收发器， 向目标基站发送指配请求，请求建立所 述目标基站与移动台的第二收发器之间的第二业务链路，所述第二业务链路包 括空口业务链路；接收业务链路完成的消息后，发送切换命令指示所述移动台 切换到所述第二业务链路上。  If the target base station does not use the first transceiver, sending an assignment request to the target base station, requesting to establish a second service link between the target base station and the second transceiver of the mobile station, where the second service link includes an air interface After receiving the service link completion message, the sending handover command instructs the mobile station to switch to the second service link.
6、 根据权利要求 5所述的方法， 其特征在于， 所述根据所述切换申请， 判断目标基站与所述源基站是否使用移动台相同的收发器的步骤包括：  The method according to claim 5, wherein the step of determining, according to the handover request, whether the target base station and the source base station use the same transceiver of the mobile station comprises:
所述切换申请中携带共收发器标志，根据所述共收发器标志，得到所述目 标基站与所述源基站是否使用移动台相同的收发器的判断结果。  The handover request carries a common transceiver identifier, and according to the common transceiver identifier, a determination result of whether the target base station and the source base station use the same transceiver of the mobile station is obtained.
7、 切换的方法， 源基站与第一收发器之间已建立第一业务链路， 其特征 在于， 包括如下步骤：  The method of switching, the first service link is established between the source base station and the first transceiver, and the method includes the following steps:
向所述源基站上报的信号搜索和测量结果，所述信号搜索和测量结果用于 所述源基站生成切换申请；  a signal search and measurement result reported to the source base station, where the signal search and measurement result is used by the source base station to generate a handover request;
在目标基站根据接收到根据所述切换申请的指配请求后，建立第二收发器 与所述目标基站之间的第二业务链路；  After the target base station receives the assignment request according to the handover request, establishing a second service link between the second transceiver and the target base station;
在移动交换中心接收业务链路完成的消息后，根据来自所述移动交换中心 的切换命令切换到所述第二业务链路。  After receiving the message of the completion of the service link, the mobile switching center switches to the second service link according to a handover command from the mobile switching center.
8、根据权利要求 7所述的方法， 其特征在于， 所述建立第二收发器与所述 目标基站之间的第二业务链路的步骤包括：  The method according to claim 7, wherein the step of establishing a second service link between the second transceiver and the target base station comprises:
接收所述目标基站下发的信道指配消息；  Receiving a channel assignment message delivered by the target base station;
通过所述第二收发器返回 TCH前同步响应；  Returning a TCH pre-sync response by the second transceiver;
接收所述目标基站通过前向业务信道上发送的基站证实指令；  Receiving a base station verification command sent by the target base station by using a forward traffic channel;
通过所述第二收发器发送移动台证实指令并且在反向业务信道上传送空 的业务信道数据空 TCH数据；  Transmitting, by the second transceiver, a mobile station acknowledgment command and transmitting empty traffic channel data TCH data on the reverse traffic channel;
接收来自所述目标基站的业务连接消息，所述业务连接消息用于指定用于 呼叫的业务配置；  Receiving a service connection message from the target base station, the service connection message being used to specify a service configuration for the call;
通过所述第二收发器响应业务连接完成消息。 The message is completed by the second transceiver in response to the service connection.
9、 根据权利要求 7所述的方法， 其特征在于， 所述根据来自所述移动交 换中心的切换命令切换到所述第二业务链路的步骤包括： The method according to claim 7, wherein the step of switching to the second service link according to a handover command from the mobile switching center comprises:
根据所述移动交换中心通过所述源基站由第一业务链路发送的切换命令， 切换到所述第二业务链路； 或者，  Switching to the second service link according to the handover command sent by the mobile switching center by the source base station by using the first service link; or
根据所述移动交换中心通过所述目标基站由第二业务链路发送的切换命 令， 切换到所述第二业务链路。  Switching to the second service link according to a handover command sent by the mobile switching center by the target base station by the second service link.
10、根据权利要求 7所述的方法， 其特征在于， 所述向所述源基站上报的 信号搜索和测量结果的步骤包括：  The method according to claim 7, wherein the step of searching for and reporting the signal reported to the source base station comprises:
用除第一收发器之外的其他收发器进行频率信号搜索和测量；  Frequency signal search and measurement with transceivers other than the first transceiver;
向所述源基站上报信号的搜索和测量结果。  A search and measurement result of the signal is reported to the source base station.
11、 移动台， 其特征在于， 包括：  11. A mobile station, characterized in that it comprises:
控制单元， 用于发送控制信号和切换信号；  a control unit, configured to send a control signal and a switching signal;
两个或两个以上的收发器， 分别用于根据来自所述控制单元的控制信号， 建立与基站之间的业务链路；  Two or more transceivers for establishing a service link with the base station according to a control signal from the control unit;
交换连接单元， 用于根据来自所述控制单元的切换信号，控制业务搭接到 指定收发器的业务链路上。  And a switching connection unit, configured to control the service to be connected to the service link of the designated transceiver according to the switching signal from the control unit.
12、切换的***，源基站与移动台的第一收发器之间已建立第一业 路， 其特征在于， 包括：  12. The switched system, the first service path is established between the source base station and the first transceiver of the mobile station, and is characterized in that:
源基站， 用于生成切换申请；  a source base station, configured to generate a handover request;
移动交换中心 , 用于根据来自所述源基站的切换申请发送指配请求，发送 切换命令； 并在收到切换完成后释放源基站与 MS的业务链路；  a mobile switching center, configured to send an assignment request according to a handover request from the source base station, and send a handover command; and release a service link between the source base station and the MS after the handover is completed;
目标基站， 用于根据来自所述移动交换中心的指配请求， 建立与所述移动 台的第二收发器之间的第二业 路， 并反馈业务链路完成消息。  And a target base station, configured to establish a second industry path with the second transceiver of the mobile station according to the assignment request from the mobile switching center, and feed back a service link completion message.
13、 根据权利要求 12所述的***， 其特征在于， 所述移动台的第二收发 器包括搜索和测量单元， 用于进行频率信号搜索和测量。  13. System according to claim 12, characterized in that the second transceiver of the mobile station comprises a search and measurement unit for frequency signal search and measurement.
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