WO2020034064A1 - 一种越区切换方法、装置、多模终端及宽带基站 - Google Patents

一种越区切换方法、装置、多模终端及宽带基站 Download PDF

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Publication number
WO2020034064A1
WO2020034064A1 PCT/CN2018/100222 CN2018100222W WO2020034064A1 WO 2020034064 A1 WO2020034064 A1 WO 2020034064A1 CN 2018100222 W CN2018100222 W CN 2018100222W WO 2020034064 A1 WO2020034064 A1 WO 2020034064A1
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WIPO (PCT)
Prior art keywords
base station
narrowband
module
broadband
voice
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PCT/CN2018/100222
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English (en)
French (fr)
Inventor
张颖哲
吴国稳
班先亮
Original Assignee
海能达通信股份有限公司
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Priority to PCT/CN2018/100222 priority Critical patent/WO2020034064A1/zh
Publication of WO2020034064A1 publication Critical patent/WO2020034064A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • 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 communications technologies, and in particular, to a handover method, device, multi-mode terminal, and broadband base station.
  • the current private network is developing from narrowband to broadband.
  • terminal equipment In order to be compatible with the original system and equipment, terminal equipment also needs to develop from pure narrowband to wideband narrowband.
  • wideband and narrowband terminals At present, wideband and narrowband terminals have appeared on the market. Wide and narrow band terminals can support both pure narrow band standards and broadband standards. The two modules and links can work simultaneously without conflict.
  • the narrowband standard of the terminal generally refers to the Digital Mobile Radio / Police Digital Trunking (DMR / PDT) standard, which adopts the time-division multiple access (TDMA) frame structure of two time slots It is divided into two directions of uplink and downlink, each slot is 30ms, and there are two time slots in a TDMA frame.
  • the structure of the uplink and downlink frames is shown in Figure 1 and Figure 2, respectively.
  • the typical group call process of a DMR narrowband system is shown in Figure 3.
  • All terminals are waiting on the control channel. The terminal initiates a call request on the control channel, and then the base station allocates a traffic channel for the call. The relevant terminal receives the downlink from the base station The signaling will switch to this traffic channel for a call.
  • the broadband standard LTE is based on Orthogonal Frequency Division Multiplexing (OFDMA) technology and a global universal standard formulated by the 3GPP organization, and is divided into two modes: FDD-LTE and TDD-LTE.
  • LTE uplink and downlink peak rates can reach 50Mbit / s and 100Mbit / s, respectively.
  • LTE currently includes multiple standard systems. Among them, Broadband Trunking Communication (B-TrunC) is a TD-LTE-based "LTE digital transmission + trunked voice communication" private network broadband trunking system formulated by the Broadband Trunking Industry Alliance. standard.
  • B-TrunC Broadband Trunking Communication
  • the present invention provides a handover method, device, multi-mode terminal, and broadband base station to solve the problem that a pure narrowband system in the prior art cannot support seamless handover during a call.
  • the technical scheme is as follows:
  • a handover method is applied to a multi-mode terminal including a narrowband module and a broadband module.
  • the method includes:
  • the broadband module After receiving the notification message sent by the broadband base station instructing the narrowband base station to complete the preparation for the handover, the broadband module receives and plays the voice forwarded by the broadband base station, stops receiving and playing the voice through the narrowband base station, and The narrowband module switches a traffic channel to a traffic channel allocated by the second narrowband base station to the multimode terminal;
  • the voice sent by the second narrowband base station is received and played by the narrowband module, and the voice reception and playback are stopped by the wideband module.
  • the determining the second narrowband base station includes:
  • narrowband neighboring station information from the broadband base station, where the narrowband neighboring station information includes information of at least one available narrowband base station adjacent to the first narrowband base station;
  • control channel information of at least one available narrowband base station adjacent to the first narrowband base station based on the narrowband neighboring station information
  • the second narrowband base station is determined from at least one available narrowband base station adjacent to the first narrowband base station.
  • the notification message instructing the narrowband base station to complete the handover preparation carries target channel information, where the target channel information is information of a service channel allocated by the target narrowband base station to the multimode terminal;
  • the switching a service channel to the service channel allocated by the second narrowband base station to the multi-mode terminal through the narrowband module includes:
  • the handover method further includes:
  • a notification message indicating completion of the handover processing is sent to the broadband base station, so that the broadband base station stops forwarding voice to the multimode terminal.
  • a handover method applied to a broadband base station includes:
  • a crossover notification message is sent to a target narrowband base station, where the target narrowband base station includes the first narrowband The base station and the second narrowband base station, the handover notification message is used to instruct the second narrowband base station to allocate a service channel to the multimode terminal, and to instruct the first narrowband base station to forward to the multimode terminal Synchronously forward the voice to the broadband base station and the second narrowband base station;
  • Target channel information sent by the second narrowband base station, and receiving voice forwarded by the first narrowband base station, where the target channel information is information about a service channel allocated by the second narrowband base station to the multimode terminal;
  • the handover method further includes:
  • the multimode terminal determines the second narrowband base station based on the narrowband neighboring station information, wherein the narrowband neighboring station information includes information related to the first narrowband Information on at least one available narrowband base station adjacent to the base station.
  • the handover method further includes:
  • a handover device applied to a multimode terminal including a narrowband module and a broadband module includes: a determining module, a sending module, a receiving module, a first processing module, a channel switching module, and a second processing module;
  • the determining module is configured to determine a second narrowband base station, where the second narrowband base station is an available narrowband base station adjacent to the first narrowband base station currently communicating with the multimode terminal;
  • the sending module is configured to send, through the broadband module, the overriding request from the first narrowband base station to the second narrowband base station determined by the determining module to the broadband base station, so that the broadband The base station notifies the first narrowband base station to forward the voice that needs to be forwarded to the multimode terminal to the broadband base station, and notifies the second narrowband base station to allocate a service channel to the multimode terminal;
  • the receiving module is configured to receive a notification message sent by a wideband base station to instruct the narrowband base station to complete preparation for handover;
  • the first processing module is configured to: when the receiving module receives the notification message instructing the narrowband base station to complete the handover preparation, receive and play the voice forwarded by the broadband base station through the broadband module, and stop passing through the broadband base station.
  • Narrowband module receives and plays voice
  • the channel switching module is configured to switch a traffic channel to a traffic channel allocated to the multi-mode terminal by the second narrowband base station through the narrowband module;
  • the second processing module is configured to, after completing channel switching and synchronizing with the second narrowband base station, receive and play voice sent by the second narrowband base station through the narrowband module, and stop receiving and Play voice.
  • a handover device applied to a broadband base station includes: a first receiving module, a first sending module, a second receiving module, a third receiving module, and a second sending module;
  • the first receiving module is configured to receive a handover request from a first narrowband base station to a second narrowband base station sent by a multimode terminal;
  • the first sending module is configured to send a handover notification message to a target narrowband base station when the first receiving module receives the crossover request, where the target narrowband base station includes the first narrowband base station and For the second narrowband base station, the handover notification message is used to instruct the second narrowband base station to allocate a service channel to the multimode terminal, and to indicate that the first narrowband base station or the second narrowband base station will need to be forwarded to The voice of the multi-mode terminal is forwarded to the wideband base station and the second narrowband base station synchronously;
  • the second receiving module is configured to receive target channel information sent by the second narrowband base station, where the target channel information is information of a service channel allocated by the second narrowband base station to the multimode terminal;
  • the third receiving module is configured to receive a voice sent by the first narrowband base station
  • the second sending module is configured to send the target channel information received by the second receiving module to the multi-mode terminal, so that the multi-mode terminal switches a service channel to the multi-mode terminal through the narrowband module.
  • the traffic channel corresponding to the target channel information
  • the third sending module is configured to forward the voice received by the third receiving module to the multi-mode terminal, so that the multi-mode terminal receives and plays the voice through a broadband module.
  • a multi-mode terminal which includes a broadband module and a narrow-band module, and further includes: a memory and a processor;
  • the memory is used to store a program
  • the processor is configured to execute the program, and the program is specifically configured to:
  • the broadband module After receiving the notification message sent by the broadband base station instructing the narrowband base station to complete the preparation for the handover, the broadband module receives and plays the voice forwarded by the broadband base station, stops receiving and playing voice through the narrowband base station, and The narrowband module switches a traffic channel to a traffic channel allocated by the second narrowband base station to the multimode terminal;
  • the voice sent by the second narrowband base station is received and played by the narrowband module, and the voice reception and playback are stopped by the wideband module.
  • a readable storage medium stores a computer program thereon.
  • the computer program is executed by a processor, each step of a handover method applied to a multi-mode terminal is implemented.
  • a broadband base station including: a memory and a processor
  • the memory is used to store a program
  • the processor is configured to execute the program, and the program is specifically configured to:
  • a crossover notification message is sent to a target narrowband base station, where the target narrowband base station includes the first narrowband The base station and the second narrowband base station, the handover notification message is used to instruct the second narrowband base station to allocate a service channel to the multimode terminal, and to instruct the first narrowband base station to forward to the multimode terminal Synchronously forward the voice to the broadband base station and the second narrowband base station;
  • Target channel information sent by the second narrowband base station, and receiving voice forwarded by the first narrowband base station, where the target channel information is information about a service channel allocated by the second narrowband base station to the multimode terminal;
  • a readable storage medium when the computer program is executed by a processor, implements each step of a handover method applied to a broadband base station.
  • the handover method, device, multimode terminal and broadband base station provided by the present invention support the handover process of a multimode terminal from one narrowband network to another narrowband network through a broadband network, and migrate the process that affects voice reception to the broadband chain.
  • the channel is completed, that is, when the narrowband module in the multimode terminal performs operations that conflict with the voice reception, the broadband module in the multimode terminal continues to receive and process the voice, thereby achieving seamless crossover and smoothing during the narrowband call.
  • the voice connection solves the situation of voice loss and stutter, and provides users with a better experience.
  • FIG. 1 is a schematic diagram of a DMR / PDT uplink TDMA frame structure
  • FIG. 2 is a schematic diagram of a DMR / PDT downlink TDMA frame structure
  • FIG. 3 is a schematic diagram of a DMR / PDT group call process
  • FIG. 4 is a schematic flowchart of a handover method according to an embodiment of the present invention.
  • FIG. 5 is another schematic flowchart of a handover method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a process for implementing seamless handover of a multi-mode terminal through an information interaction process between a multi-mode terminal, a broadband base station, and a narrow-band base station according to an embodiment of the present invention
  • FIGS. 7a-7d are schematic flowcharts of a specific example of a handover method according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a handover apparatus according to an embodiment of the present invention.
  • FIG. 9 is another schematic structural diagram of a handover apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a multimode terminal according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a broadband base station according to an embodiment of the present invention.
  • the DMR / PDT system in the prior art usually broadcasts the neighbor information of the current base station to the narrowband terminal through C_BCAST signaling, and the narrowband terminal saves all the received neighbor information in the neighbor list.
  • the narrowband terminal receives voice, if the signal strength of the current base station's business channel is lower than the preset value, the narrowband terminal will perform a neighbor scan based on the neighbor information. If a neighbor with a better signal is found, it will start the neighbor station. Zone switching process.
  • the handover process includes: the narrowband terminal sends a P_Reselect signaling to the narrowband base station 1 to perform a handover application, and informs the narrowband base station 1 When performing a crossover, the P_Reselect signaling carries the base station identity of the narrowband base station 2.
  • the narrowband base station 1 notifies the narrowband base station 2 to allocate a traffic channel for the narrowband terminal to the call and starts to forward the voice.
  • the narrowband base station 1 receives the When a cross-zone response is sent, a notification message can be sent to the narrow-band terminal. After receiving the notification message that the cross-zone can be performed, the narrow-band terminal switches to the service channel allocated by the narrow-band base station 2 and continues receiving after synchronizing to the narrow-band base station 2. Voice, thus completing the entire process of crossing the zone.
  • narrowband terminals cannot receive voice and send signaling at the same time, narrowband terminals need to stop voice reception when sending a cross-zone application. Similarly, narrowband terminals cannot receive voice and switch channels at the same time, that is, they need to stop voice reception when switching channels. Only after the channel switching is completed and synchronized to the narrowband base station 2 can the voice be continued to be received and played, which will cause the voice to drop or even the call to be interrupted.
  • an embodiment of the present invention provides a handover method.
  • the method is directed to a multimode terminal having a narrowband module and a broadband module, and the multimode terminal is implemented from a narrowband network to another through a broadband network. Seamless handoff of a narrowband network.
  • FIG. 4 shows a schematic flowchart of a handover method according to an embodiment of the present invention.
  • the method may include:
  • Step S401 Determine a second narrowband base station.
  • the second narrowband base station is an available narrowband base station adjacent to the first narrowband base station that is currently communicating with the multi-mode terminal.
  • the process of determining the second narrowband base station may include: obtaining narrowband neighbor information from the broadband base station, the narrowband neighbor information including information of at least one available narrowband base station adjacent to the first narrowband base station; based on The narrowband neighboring station information is used to obtain control channel information of at least one available narrowband base station adjacent to the first narrowband base station; and based on the control channel information, a second narrowband base station is determined from at least one available narrowband base station adjacent to the first narrowband base station.
  • the process of obtaining the narrowband neighboring station information from the broadband base station may be: receiving the narrowband neighboring station information broadcasted by the broadband base station to the broadband module of the multi-mode terminal.
  • the neighboring station information is broadcast by the narrowband system to each multi-mode terminal through C_BCAST signaling. A broadcast is required. If the narrowband system has many other more important broadcast signaling, and there are more neighboring stations, it will be slower to receive all the neighboring station information. This may cause multi-mode terminals to fail to scan the neighbors in time when they need to cross the zone. Station, it will cause speech dropout or even call interruption.
  • the neighbor station information is updated frequently, but the narrowband system broadcasts slowly, and it may not receive the information of the new neighbor station in time, and it may not be able to scan the surrounding base stations in time. It will also cause dropped voice or even call interruption.
  • all the neighboring station information is pushed by the broadband base station to the multi-mode terminal in the area to be crossed, which can greatly improve the acquisition speed of the neighboring station information and the update speed of the neighboring station information.
  • Step S402 Send a cross-zone request from the first narrow-band base station to the second narrow-band base station to the broadband base station, so that the broadband base station notifies the second narrow-band base station to allocate a service channel for the multi-mode terminal, and notifies the first narrow-band base station that forwarding is required.
  • the voice of the multi-mode terminal is forwarded to the broadband base station synchronously.
  • the multimode terminal if it finds a second narrowband base station with a better signal, it initiates a cross-zone request to the broadband base station.
  • the handover request may carry base station identification information of the second narrowband base station, and the base station identification information may include a base station system code, a control channel number, and the like.
  • the multi-mode terminal still uses the narrowband module to receive and play the voice sent by the first narrowband base station.
  • Step S403 after receiving the notification message sent by the broadband network indicating that the narrowband base station completes the preparation for the handover, the broadband module receives and plays the voice forwarded by the broadband base station from the first narrowband base station, stops receiving and playing the voice through the narrowband module, and The traffic channel is switched to the traffic channel allocated by the second narrowband base station for the multi-mode terminal through the narrowband module.
  • the narrowband base station When the narrowband base station completes the preparation for the handover, it will send a notification message to the broadband base station to indicate the completion of the preparation. After receiving the notification message from the narrowband base station, the broadband base station sends a notification message to the multimode terminal to indicate that the narrowband base station has completed the preparation. And, when the narrowband base station completes the preparation for the over-range, the voice will also be forwarded to the broadband base station synchronously.
  • the broadband base station forwards the voice from the first narrowband base station to the multi-mode terminal.
  • the multi-mode terminal stops the narrow band through receiving the notification message from the broadband base station.
  • the module receives and plays the voice, and starts to receive and play the voice through the broadband module.
  • the multi-mode terminal When the multi-mode terminal receives and plays the voice forwarded by the broadband base station through the broadband module, the multi-mode terminal simultaneously switches the traffic channel to the traffic channel allocated by the second narrow-band base station through the narrow-band module.
  • the second narrow-band base station is After the channel is allocated by the multi-mode terminal, it sends a cross-zone response to the broadband base station.
  • the cross-zone response carries the target channel information, which is the information of the channel allocated by the second narrow-band base station to the multi-mode terminal.
  • the broadband base station receives After the cross-zone response, a notification message is sent to the multi-mode terminal to instruct the narrow-band base station to complete the preparation for the cross-zone.
  • the notification message carries the target channel information.
  • the multi-mode terminal receives the notification message, it sends the notification message through the narrow-band module.
  • the traffic channel is switched to a traffic channel corresponding to the target channel information.
  • Step S404 After the channel switching is completed and synchronized with the second narrowband base station, the voice forwarded by the second narrowband base station is received and played by the narrowband module, and the reception and playback of the voice by the wideband base station is stopped.
  • a notification message indicating the completion of the cross-zone processing is sent to the broadband base station, so that the broadband base station stops forwarding voice to the multi-mode terminal.
  • the handover method provided by the embodiment of the present invention supports a handover process of a multimode terminal from a narrowband network to another narrowband network through a broadband network, and migrates a process that affects voice reception to a broadband link, that is, when the multimode
  • the narrowband module in the terminal performs operations that conflict with voice reception
  • the broadband module continues to receive and process voice, thereby achieving seamless cross-zone and smooth voice connection during narrowband calls, completely eliminating voice loss and stuttering.
  • Situation to provide users with a better experience.
  • FIG. 5 shows a schematic flowchart of a handover method according to an embodiment of the present invention.
  • the method may include:
  • Step S501 When receiving a handover request from the first narrowband base station to the second narrowband base station, the mobile station sends a handover notification message to the target narrowband base station.
  • the target narrowband includes the first narrowband base station and the second narrowband base station.
  • the handover notification message is used to instruct the second narrowband base station to assign a service channel to the multimode terminal. It is also used to instruct the first narrowband base station to forward the voice to the multimode terminal. Simultaneously forward to the wideband base station and the second narrowband base station.
  • the second narrowband base station After receiving the handover notification message, it allocates a traffic channel for the multimode terminal and sends the information of the allocated traffic channel to the broadband base station. For the first narrowband base station, it will need to forward The voice from the multi-mode terminal is forwarded to the broadband base station and the second narrow-band base station simultaneously.
  • Step S502 Receive target channel information sent by the second narrowband base station, and receive voice forwarded by the first narrowband base station.
  • the target channel information is information of a traffic channel allocated by the second narrowband base station to the multi-mode terminal.
  • Step S503 Send the target channel information to the multimode terminal, so that the multimode terminal switches the service channel to the service channel corresponding to the target channel information through the narrowband module, and forwards the received voice to the multimode terminal, so that the multimode terminal passes
  • the broadband module receives and plays the voice.
  • the multi-mode terminal After the multi-mode terminal switches channels and synchronizes with the second narrowband base station, it can send a notification message to the broadband base station indicating that the handover processing is completed.
  • the method provided in this embodiment may further include:
  • Step S504 Receive a notification message sent by the multi-mode terminal indicating completion of the cross-zone processing, and stop forwarding voice to the multi-mode terminal.
  • the narrowband neighboring station information may be sent by the broadband base station to the multimode terminal, that is, the handover method provided by the embodiment of the present invention may further include: sending the narrowband neighboring station information to the broadband module of the multimode terminal, So that the multi-mode terminal determines the second narrowband base station based on the narrowband neighboring station information.
  • the broadband base station can send the narrowband neighboring station information to the broadband module of the multi-mode terminal in a broadcast manner.
  • the handover method provided by the embodiment of the present invention can support a handover process of a multi-mode terminal from a narrowband network to another narrowband network through a broadband network, and the process that affects voice reception is migrated to a broadband link to complete.
  • the narrowband module in the multi-mode terminal performs operations that conflict with voice reception, it can continue to receive and process voice through the broadband module, thereby achieving seamless crossover and smooth voice connection during narrowband calls, completely eliminating voice loss. And Caton's situation provides users with a better experience.
  • FIG. 6 illustrates a schematic flowchart of implementing seamless handover of a multi-mode terminal through an information exchange process between a multi-mode terminal, a broadband base station, and a narrow-band base station.
  • the process may include:
  • Step S601 The multi-mode terminal receives the narrowband neighboring station information sent by the broadband base station through the broadband module.
  • the narrowband neighboring station information is information of a narrowband base station adjacent to the first narrowband base station.
  • the first narrowband base station is a narrowband base station that currently communicates with a multimode terminal, that is, the multimode terminal is currently communicating with another multimode terminal through the first narrowband base station.
  • a terminal makes a call.
  • Step S602 The multi-mode terminal acquires control channel information of at least one narrowband base station adjacent to the first narrowband base station based on the narrowband neighboring station information.
  • Step S603 The multi-mode terminal determines a second narrowband base station from at least one narrowband base station adjacent to the first narrowband base station based on the control channel information.
  • Step S604 The multi-mode terminal sends a handover request from the first narrowband base station to the second narrowband base station to the broadband base station.
  • the handover request carries a base station identifier of the second narrowband base station, and the base station identifier may include a base station system code, a control channel number, and the like.
  • Step S605 After receiving the handover request, the broadband base station sends a handover notification message to the second narrowband base station based on the base station identifier in the handover request, and sends a handover notification message to the first narrowband base station.
  • Step S606 After receiving the handover notification message, the second narrowband base station assigns a traffic channel to the multimode terminal, and after allocating the traffic channel to the multimode terminal, sends a handover response to the broadband base station.
  • the cross-zone response carries target channel information.
  • the target channel information is information about a service channel allocated by the second narrowband base station to the multi-mode terminal.
  • the target channel information may include a service channel number and a time slot number.
  • Step S607 After the broadband base station receives the out-of-zone response, it sends a notification message to the multi-mode terminal indicating that the narrow-band base station has completed the out-of-zone preparation.
  • the notification message instructing the narrowband base station to complete the handover preparation carries target channel information.
  • Step S608 After receiving the handover notification message, the first narrowband base station synchronously forwards the voice that needs to be forwarded to the multi-mode terminal to the broadband base station.
  • Step S609 The broadband base station forwards the voice received from the first narrowband base station to the multi-mode terminal.
  • Step S610 After receiving the notification message indicating that the narrowband base station has completed the preparation for the handover, the multimode terminal stops receiving and playing voice through the narrowband module, and switches the traffic channel to the traffic channel allocated by the second narrowband base station through the narrowband module. To start receiving and playing voice through the broadband module.
  • the multimode terminal After receiving a notification message instructing the narrowband base station to complete the preparation for the handover, the multimode terminal obtains the target channel information from the notification message, stops receiving and playing voice through the narrowband module, and switches the service channel to the target channel information through the narrowband module. Corresponding traffic channel.
  • Step S611 After the multi-mode terminal completes the channel switching through the narrowband module and synchronizes with the second narrowband base station, it sends a notification message to the wideband base station through the wideband module to indicate the completion of the cross-zone processing.
  • Step S612 After receiving the notification message indicating the completion of the cross-zone processing, the broadband base station stops forwarding voice to the multi-mode terminal.
  • Step S613 The multimode terminal receives and plays the voice forwarded by the second narrowband base station through the narrowband module.
  • the handover method provided by the embodiment of the present invention supports a handover process of a multimode terminal from a narrowband network to another narrowband network through a broadband network, and migrates a process that affects voice reception to a broadband link.
  • the narrowband module in the terminal performs operations that conflict with voice reception
  • the broadband module continues to receive and process voice, thereby achieving seamless cross-zone and smooth voice connection during narrowband calls, completely eliminating voice loss and stuttering. Situation, to provide users with a better experience.
  • the multi-mode terminal MS1 and the multi-mode terminal MS2 are talking on the narrowband base station 1.
  • MS2 is moving in the direction of the narrowband base station 2.
  • MS2 can obtain the current narrowband neighboring station information in real time through the broadband base station.
  • MS2 when MS2 moves to the range of narrowband base station 2, the signal of narrowband base station 1 deteriorates. At this time, MS2 performs a neighbor scan based on the current narrowband neighbor information to determine that the signal of narrowband base station 2 is better.
  • MS2 initiates a cross-zone request from a wide-band base station to a narrow-band base station 2. After receiving the cross-zone request, the broadband base station notifies the narrowband base station 2 to allocate a service channel for the MS2, and notifies the narrowband base station 1 to forward the voice to be forwarded to the MS2 to the broadband base station synchronously. In the above process, the MS2 always receives the voice forwarded by the narrowband base station 1 through the narrowband module.
  • the narrowband base station 1 forwards the voice to the broadband base station
  • the narrowband base station 2 sends the information of the channel allocated for MS2 to the broadband base station
  • the broadband base station sends the channel information to the MS2 and forwards the voice to the MS2.
  • MS2 stops receiving voice through the narrowband module and performs channel switching through the narrowband module based on the channel information. In this process, MS2 receives the voice forwarded by the broadband base station through the broadband module.
  • MS2 After completing the channel switching, MS2 sends a notification message of the completion of the cross-zone processing to the broadband base station. After receiving the notification message, the broadband base station stops forwarding voice to MS2. MS2 receives the voice forwarded by narrowband base station 2 through the narrowband module, as shown in Figure 7d. Show.
  • an embodiment of the present invention further provides a handover device, which is applied to a multi-mode terminal including a narrowband module and a broadband module.
  • a handover device which is applied to a multi-mode terminal including a narrowband module and a broadband module.
  • FIG. 8 shows the device 80
  • the structure diagram may include: a determining module 801, a first sending module 802, a receiving module 803, a first processing module 804, a channel switching module 805, and a second processing module 806.
  • a determining module 801 is configured to determine a second narrowband base station.
  • the second narrowband base station is an available narrowband base station adjacent to the first narrowband base station that is currently communicating with the multi-mode terminal.
  • the first sending module 802 is configured to send a handover request from the first narrowband base station to the second narrowband base station determined by the determining module 801 to the broadband base station through the broadband module, so that the broadband base station notifies the second narrowband base station as a multi-mode terminal. Allocate a traffic channel and notify the first narrowband base station to forward the voice that needs to be sent to the multimode terminal to the broadband base station.
  • the receiving module 803 is configured to receive a notification message sent by a broadband base station to instruct the narrowband base station to complete preparation for handover.
  • the first processing module 804 is configured to receive and play the voice forwarded by the broadband base station through the broadband module when the receiving module 803 receives the notification message instructing the narrowband base station to complete the handover preparation, and stop receiving and playing the voice through the narrowband module.
  • a channel switching module 805 is configured to switch a service channel to a service channel allocated by a second narrowband base station to a multimode terminal through a narrowband module.
  • the second processing module 806 is configured to receive and play the voice forwarded by the second narrowband base station through the narrowband module after the channel switching module 805 finishes channel switching and synchronizes with the second narrowband base station.
  • the handover device supports a handover process of a multimode terminal from a narrowband network to another narrowband network through a broadband network, and migrates a process that affects voice reception to a broadband link, that is, when the multimode
  • the narrowband module in the terminal performs operations that conflict with voice reception
  • the broadband module continues to receive and process voice, thereby achieving seamless cross-zone and smooth voice connection during narrowband calls, completely eliminating voice loss and stuttering.
  • Situation to provide users with a better experience.
  • the determining module 801 may include a first obtaining submodule, a second obtaining submodule, and a determining submodule.
  • the first acquisition submodule is configured to acquire narrowband neighboring station information from the broadband base station.
  • the narrowband neighboring station information includes information of at least one available narrowband base station adjacent to the first narrowband base station.
  • the second acquisition submodule is configured to acquire control channel information of at least one available narrowband base station adjacent to the first narrowband base station based on the narrowband neighboring station information.
  • a determining submodule configured to determine a second narrowband base station from at least one available narrowband base station adjacent to the first narrowband base station based on the control channel information.
  • the notification message instructing the narrowband base station to complete the handover preparation carries target channel information
  • the target channel information is information of a service channel allocated by the target narrowband base station to the multimode terminal
  • the channel The switching module 805 is specifically configured to obtain the target channel information from a notification message instructing the narrowband base station to complete the handover preparation, and switch the traffic channel to a traffic channel corresponding to the target channel information through the narrowband module.
  • the handover apparatus 80 provided in the foregoing embodiment may further include a second sending module.
  • the second sending module is configured to send a notification message indicating that the handover processing is completed to the broadband base station after the channel switching is completed and synchronized with the second narrowband base station, so that the broadband base station stops forwarding voice to the multimode terminal.
  • An embodiment of the present invention further provides a handover apparatus, which is applied to a broadband base station.
  • a schematic structural diagram of the apparatus 90 is shown.
  • the apparatus may include a first receiving module 901 and a first transmitting device.
  • a first receiving module 901 is configured to receive a handover request from a first narrowband base station to a second narrowband base station sent by a multimode terminal.
  • a first sending module 902 configured to send a handover notification message to a target narrowband base station when the first receiving module receives a handover request, where the target narrowband base station includes a first narrowband base station and a second narrowband base station, and a handover notification message It is used for instructing the second narrowband base station to allocate a traffic channel to the multimode terminal, and instructing the first narrowband base station or the second narrowband base station to forward the voice that needs to be forwarded to the multimode terminal to the wideband base station and the second narrowband base station simultaneously.
  • the second receiving module 903 is configured to receive target channel information sent by the second narrowband base station, where the target channel information is information about a service channel allocated by the second narrowband base station to the multi-mode terminal.
  • the second sending module 905 is configured to send the target channel information received by the second receiving module 903 to the multi-mode terminal, so that the multi-mode terminal switches the service channel to the service channel corresponding to the target channel information through the narrowband module.
  • the third sending module 906 is configured to forward the voice received by the third receiving module 904 to the multi-mode terminal, so that the multi-mode terminal receives and plays the voice through the broadband module.
  • the handover device can support a handover process of a multi-mode terminal from a narrowband network to another narrowband network through a broadband network, and the process that affects voice reception is migrated to a broadband link.
  • the narrowband module in the multi-mode terminal performs operations that conflict with voice reception, it can continue to receive and process voice through the broadband module, thereby achieving seamless crossover and smooth voice connection during narrowband calls, completely eliminating voice loss. And Caton's situation provides users with a better experience.
  • the handover apparatus 90 provided in the foregoing embodiment may further include a fourth sending module.
  • a fourth sending module configured to send the narrowband neighboring station information to the broadband module of the multimode terminal, so that the multimode terminal determines the second narrowband base station based on the narrowband neighboring station information, wherein the narrowband neighboring station information includes the first narrowband base station and the first narrowband base station. Information of at least one adjacent narrowband base station.
  • the handover apparatus 90 provided in the foregoing embodiment may further include a fourth receiving module, a fifth sending module, and a notification module.
  • a fourth receiving module is configured to receive a notification message sent by the multi-mode terminal indicating that the handover processing is completed.
  • the third sending module 906 is further configured to stop forwarding the voice to the multi-mode terminal when the fourth receiving module receives a notification message indicating that the handover processing is completed.
  • the fifth sending module is further configured to send a notification message instructing the first narrowband base station to stop forwarding voice to the broadband base station.
  • the notification module is configured to notify the first narrowband base station to stop sending voice to the broadband base station.
  • An embodiment of the present invention further provides a multi-mode terminal including a broadband module and a narrow-band module.
  • a schematic structural diagram of the multi-mode terminal 100 may be included, which may include a memory 1001 and a processor 1002.
  • the processor 1002 is configured to execute the program, where the program is specifically configured to:
  • the broadband module After receiving the notification message sent by the broadband base station instructing the narrowband base station to complete the preparation for the handover, the broadband module receives and plays the voice forwarded by the broadband base station, stops receiving and playing the voice through the narrowband base station, and The narrowband module switches a traffic channel to a traffic channel allocated by the second narrowband base station to the multimode terminal;
  • the voice sent by the second narrowband base station is received and played by the narrowband module, and the voice reception and playback are stopped by the wideband module.
  • An embodiment of the present invention further provides a readable storage medium on which a computer program is stored.
  • a computer program is stored on which a computer program is stored.
  • An embodiment of the present invention further provides a broadband base station.
  • FIG. 11 shows a schematic structural diagram of the broadband base station 110, which may include a memory 1101 and a processor 1102.
  • the processor 1102 is configured to execute the program, and the program is specifically configured to:
  • a crossover notification message is sent to a target narrowband base station, where the target narrowband base station includes the first narrowband The base station and the second narrowband base station, the handover notification message is used to instruct the second narrowband base station to allocate a service channel to the multimode terminal, and to instruct the first narrowband base station to forward to the multimode terminal Synchronously forward the voice to the broadband base station and the second narrowband base station;
  • Target channel information sent by the second narrowband base station, and receiving voice forwarded by the first narrowband base station, where the target channel information is information about a service channel allocated by the second narrowband base station to the multimode terminal;
  • An embodiment of the present invention further provides a readable storage medium having a computer program stored thereon.
  • the computer program is executed by a processor, each step of the handover method applied to a broadband base station is implemented.
  • the disclosed methods, devices, and equipment may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some communication interfaces, devices or units, which may be electrical, mechanical or other forms.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present invention is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in various embodiments of the present invention.
  • the foregoing storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes .

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Abstract

本申请提供了一种越区切换方法、装置、多模终端及宽带基站，方法包括：多模终端确定第二窄带基站，向宽带基站发送从第一窄带基站越区至第二窄带基站的越区请求，以使宽带基站通知第二窄带基站为多模终端分配业务信道，并通知第一窄带基站将需要发送至多模终端的语音发送至宽带基站；当接收到宽带基站发送的指示窄带基站完成越区准备的通知消息后，通过宽带模块接收和播放宽带基站转发的语音，并通过窄带模块切换至第二窄带基站为其分配的业务信道，在完成信道切换并与第二窄带基站同步后，通过窄带模块接收和播放第二窄带基站发送的语音。本申请可实现窄带呼叫过程中的无缝越区，解决了语音丢失和卡顿的情况，给用户提供了更好的体验。

Description

一种越区切换方法、装置、多模终端及宽带基站 技术领域
本发明涉及通信技术领域，尤其涉及一种越区切换方法、装置、多模终端及宽带基站。
背景技术
目前的专网正在从窄带向宽带化方向发展，为了很好的兼容原来的系统和设备，终端设备也需要从纯窄带向宽窄带融合方向发展，目前，市场上已经出现了宽窄带终端，该宽窄带终端既可以支持纯窄带标准，也可以支持宽带标准，两个模块和链路可以同时工作互不冲突。
终端的窄带标准一般指的是数字移动无线电/警用数字集群(Digital Mobile Radio/Police Digital Trunking，DMR/PDT)标准，采用两个时隙的时分多址(Time Divide Multi Address，TDMA)帧结构，分为上行和下行两个方向，每个时隙30ms，在一个TDMA帧中包含2个时隙，上下行帧的结构分别如图1和图2所示。DMR窄带系统典型的组呼通话过程如图3所示，平时所有终端都守候在控制信道上，终端在控制信道上发起呼叫请求，然后基站分配一个业务信道用于通话，相关终端收到基站下行信令都会切换到该业务信道进行通话，通话结束后基站释放该业务信道，相关终端切换回控制信道继续守候。宽带标准LTE是基于正交频分复用(Orthogonal Frequency Division Multiplexing,OFDMA)技术、由3GPP组织制定的全球通用标准，分为FDD-LTE和TDD-LTE两种模式。LTE上下行峰值速率分别可以达到50Mbit/s和100Mbit/s。LTE目前包含多种标准体系，其中，宽带集群通信(Broadband Trunking Communication，B-TrunC)是由宽带集群产业联盟组织制定的基于TD-LTE的“LTE数字传输+集群语音通信”专网宽带集群系统标准。
由于技术和标准本身的限制，目前的纯窄带系统无法支持呼叫过程中的无缝越区切换，即在进行越区的时候存在语音丢失和卡顿的情况，用户的体验很不好。
发明内容
有鉴于此，本发明提供了一种越区切换方法、装置、多模终端及宽带基站，用以解决现有技术中的纯窄带系统无法支持呼叫过程中的无缝越区切换的问题，其技术方案如下：
一种越区切换方法，应用于包括窄带模块和宽带模块的多模终端，所述方法包括：
确定第二窄带基站，所述第二窄带基站为当前与所述多模终端进行通信的第一窄带基站相邻的可用窄带基站；
通过所述宽带模块向所述宽带基站发送从所述第一窄带基站越区至所述第二窄带基站的越区请求，以使所述宽带基站通知所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站，并通知所述第二窄带基站为所述多模终端分配业务信道；
当接收到所述宽带基站发送的指示窄带基站完成越区准备的通知消息后，通过所述宽带模块接收和播放所述宽带基站转发的语音，停止通过所述窄带基站接收和播放语音，并通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模终端分配的业务信道；
在完成信道切换并与所述第二窄带基站同步后，通过所述窄带模块接收和播放所述第二窄带基站发送的语音，停止通过所述宽带模块接收和播放语音。
其中，所述确定第二窄带基站，包括：
从所述宽带基站获取窄带邻站信息，所述窄带邻站信息包括与所述第一窄带基站相邻的至少一个可用窄带基站的信息；
基于所述窄带邻站信息，获取与所述第一窄带基站相邻的至少一个可用窄带基站的控制信道信息；
基于所述控制信道信息，从与所述第一窄带基站相邻的至少一个可用窄带基站中确定所述第二窄带基站。
其中，所述指示窄带基站完成越区准备的通知消息中携带有目标信道信息，所述目标信道信息为所述目标窄带基站为所述多模终端分配的业务信道的信息；
所述通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模 终端分配的业务信道，包括：
从所述指示窄带基站完成越区准备的通知消息中获取所述目标信道信息；
通过所述窄带模块将业务信道切换至与所述目标信道信息对应的业务信道。
所述越区切换方法还包括：
在完成信道切换并与所述第二窄带基站同步后，向所述宽带基站发送指示越区处理完成的通知消息，以使所述宽带基站停止向所述多模终端转发语音。
一种越区切换方法，应用于宽带基站，所述越区切换方法包括：
当接收到多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求时，向目标窄带基站发送越区通知消息，其中，所述目标窄带基站包括所述第一窄带基站和所述第二窄带基站，所述越区通知消息用于指示所述第二窄带基站为所述多模终端分配业务信道、指示所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站和所述第二窄带基站；
接收所述第二窄带基站发送的目标信道信息，并接收所述第一窄带基站转发的语音，所述目标信道信息为所述第二窄带基站为所述多模终端分配的业务信道的信息；
将所述目标信道信息发送至所述多模终端，以使所述多模终端通过窄带模块将业务信道切换至所述目标信道信息对应的业务信道，并将接收的所述语音转发至所述多模终端，以使所述多模终端通过宽带模块接收和播放所述语音。
所述越区切换方法还包括：
向所述多模终端的宽带模块发送窄带邻站信息，以使所述多模终端基于所述窄带邻站信息确定所述第二窄带基站，其中，窄带邻站信息包括与所述第一窄带基站相邻的至少一个可用窄带基站的信息。
所述越区切换方法还包括：
当接收到所述多模终端发送的指示越区处理完成的通知消息时，停止向所述多模终端转发语音，并通知所述第一窄带基站停止向所述宽带基站发送语音。
一种越区切换装置，应用于包括窄带模块和宽带模块的多模终端，所述装置包括：确定模块、发送模块、接收模块、第一处理模块、信道切换模块和第 二处理模块；
所述确定模块，用于确定第二窄带基站，所述第二窄带基站为当前与所述多模终端进行通信的第一窄带基站相邻的可用窄带基站；
所述发送模块，用于通过所述宽带模块向所述宽带基站发送从所述第一窄带基站越区至所述确定模块确定的所述第二窄带基站的越区请求，以使所述宽带基站通知所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站，并通知所述第二窄带基站为所述多模终端分配业务信道；
所述接收模块，用于接收宽带基站发送的指示窄带基站完成越区准备的通知消息；
所述第一处理模块，用于在所述接收模块接收到所述指示窄带基站完成越区准备的通知消息时，通过所述宽带模块接收和播放所述宽带基站转发的语音，停止通过所述窄带模块接收和播放语音；
所述信道切换模块，用于通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模终端分配的业务信道；
所述第二处理模块，用于在完成信道切换并与所述第二窄带基站同步后，通过所述窄带模块接收和播放所述第二窄带基站发送的语音，停止通过所述宽带模块接收和播放语音。
一种越区切换装置，应用于宽带基站，所述装置包括：第一接收模块、第一发送模块、第二接收模块、第三接收模块和第二发送模块；
所述第一接收模块，用于接收多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求；
所述第一发送模块，用于当所述第一接收模块接收到所述越区请求时，向目标窄带基站发送越区通知消息，其中，所述目标窄带基站包括所述第一窄带基站和所述第二窄带基站，所述越区通知消息用于指示所述第二窄带基站为所述多模终端分配业务信道、指示所述第一窄带基站或所述第二窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站和所述第二窄带基站；
所述第二接收模块，用于接收所述第二窄带基站发送的目标信道信息，所述目标信道信息为所述第二窄带基站为所述多模终端分配的业务信道的信息；
所述第三接收模块，用于接收所述第一窄带基站发送的语音；
所述第二发送模块，用于将所述第二接收模块接收的所述目标信道信息发送至所述多模终端，以使所述多模终端通过所述窄带模块将业务信道切换至所述目标信道信息对应的业务信道；
所述第三发送模块，用于将所述第三接收模块接收的所述语音转发至所述多模终端，以使所述多模终端通过宽带模块接收和播放所述语音。
一种多模终端，所述多模终端包括宽带模块和窄带模块，还包括：存储器和处理器；
所述存储器，用于存储程序；
所述处理器，用于执行所述程序，所述程序具体用于：
确定第二窄带基站，所述第二窄带基站为当前与所述多模终端进行通信的第一窄带基站相邻的可用窄带基站；
通过所述宽带模块向所述宽带基站发送从所述第一窄带基站越区至所述第二窄带基站的越区请求，以使所述宽带基站通知所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站，并通知所述第二窄带基站为所述多模终端分配业务信道；
当接收到所述宽带基站发送的指示窄带基站完成越区准备的通知消息后，通过所述宽带模块接收和播放所述宽带基站转发的语音，停止通过所述窄带基站接收和播放语音，并通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模终端分配的业务信道；
在完成信道切换并与所述第二窄带基站同步后，通过所述窄带模块接收和播放所述第二窄带基站发送的语音，停止通过所述宽带模块接收和播放语音。
一种可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时，实现应用于多模终端的越区切换方法的各个步骤。
一种宽带基站，包括：存储器和处理器；
所述存储器，用于存储程序；
所述处理器，用于执行所述程序，所述程序具体用于：
当接收到多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求时，向目标窄带基站发送越区通知消息，其中，所述目标窄带基站包括所述第一窄带基站和所述第二窄带基站，所述越区通知消息用于指示所述第二窄带 基站为所述多模终端分配业务信道、指示所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站和所述第二窄带基站；
接收所述第二窄带基站发送的目标信道信息，并接收所述第一窄带基站转发的语音，所述目标信道信息为所述第二窄带基站为所述多模终端分配的业务信道的信息；
将所述目标信道信息发送至所述多模终端，以使所述多模终端通过窄带模块将业务信道切换至所述目标信道信息对应的业务信道，并将接收的所述语音转发至所述多模终端，以使所述多模终端通过宽带模块接收和播放所述语音。
一种可读存储介质，所述计算机程序被处理器执行时，实现应用于宽带基站的越区切换方法的各个步骤。
上述技术方案具有如下有益效果：
本发明提供的越区切换方法、装置、多模终端及宽带基站，通过宽带网络支撑多模终端由一窄带网络向另一窄带网络的越区切换过程，将影响语音接收的流程迁移到宽带链路完成，即当多模终端中的窄带模块进行与语音接收相冲突的操作时，由多模终端中的宽带模块继续进行语音的接收和处理，从而实现窄带呼叫过程中无缝越区和平滑的语音接续，解决了语音丢失和卡顿的情况，给用户提供了更好的体验。
附图说明
图1为DMR/PDT上行TDMA帧结构示意图；
图2为DMR/PDT下行TDMA帧结构示意图；
图3为DMR/PDT组呼流程示意图；
图4为本发明实施例提供的越区切换方法的一流程示意图；
图5为本发明实施例提供的越区切换方法的另一流程示意图；
图6为本发明实施例提供的通过多模终端、宽带基站与窄带基站之间的信息交互过程实现多模终端无缝越区切换的流程示意图；
图7a-7d为本发明实施例提供的越区切换方法的一具体实例的流程示意图；
图8为本发明实施例提供的越区切换装置的一结构示意图；
图9为本发明实施例提供的越区切换装置的另一结构示意图；
图10为本发明实施例提供的多模终端的结构示意图；
图11为本发明实施例提供的宽带基站的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
现有技术中的DMR/PDT系统通常会通过C_BCAST信令广播当前基站的邻站信息给窄带终端，窄带终端把收到的所有邻站信息保存在邻站列表。窄带终端在接收语音的过程中，如果当前基站的业务信道的信号强度低于预设值，则窄带终端会根据邻站信息进行邻站扫描，如果找到信号更好的邻站，则会启动越区切换流程。
假设窄带终端当前通过窄带基站1进行通话，其想越区至窄带基站2，则现有技术中越区切换的过程包括：窄带终端向窄带基站1发送P_Reselect信令进行越区申请，通知窄带基站1进行越区，P_Reselect信令中携带有窄带基站2的基站标识；窄带基站1通知窄带基站2为窄带终端分配用于通话的业务信道并开始转发语音，窄带基站1在接收到窄带基站2发送的越区响应时，向窄带终端发送可以进行越区的通知消息，窄带终端接收到可以进行越区的通知消息之后，切换到窄带基站2为其分配的业务信道，同步到窄带基站2后继续接收语音，从而完成整个越区过程。
由于窄带终端无法同时接收语音和发送信令，因此，窄带终端在发送越区申请时需要停止语音接收，同样地，窄带终端也无法同时接收语音和切换信道，即切换信道时也需要停止语音接收，信道切换完成并同步到窄带基站2后才能继续接收和播放语音，这样会导致语音掉字甚至通话中断。
鉴于现有技术中存在的问题，本发明实施例提供了一种越区切换方法，该方法针对具有窄带模块和宽带模块的多模终端，借助宽带网络实现该多模终端由一窄带网络向另一窄带网络的无缝越区切换。
如果站在多模终端一侧来看本发明的技术方案，请参阅图4，示出了本发明实施例提供的越区切换方法的流程示意图，该方法可以包括：
步骤S401：确定第二窄带基站。
其中，第二窄带基站为当前与多模终端进行通信的第一窄带基站相邻的可用窄带基站。
在一种可能的实现方式中，确定第二窄带基站的过程可以包括：从宽带基站获取窄带邻站信息，窄带邻站信息包括与第一窄带基站相邻的至少一个可用窄带基站的信息；基于窄带邻站信息，获取与第一窄带基站相邻的至少一个可用窄带基站的控制信道信息；基于控制信道信息，从与第一窄带基站相邻的至少一个可用窄带基站中确定第二窄带基站。
其中，从宽带基站获取窄带邻站信息的过程可以为：接收宽带基站广播下发至多模终端的宽带模块的窄带邻站信息。
需要说明的是，是否能够及时获取邻站信息是越区快慢的主要影响因素之一，现有技术中，邻站信息是窄带系统通过C_BCAST信令广播到每个多模终端，每个邻站需要一条广播，如果窄带系统有很多其他更重要的广播信令，而且邻站比较多的话，接收到全部邻站信息会比较慢，这可能会导致多模终端需要越区时无法及时扫描到邻站，会造成语音掉字甚至通话中断。并且，当多模终端在语音接收中多次越区后，邻站信息更新比较频繁，但是窄带系统广播比较慢，也可能无法及时收到新邻站的信息，无法及时扫描到周围的基站，也会造成越区语音掉字甚至通话中断。而在本实施例中，所有的邻站信息均由宽带基站向待越区多模终端推送，这能大大提高邻站信息的获取速度以及邻站信息的更新速度。
步骤S402：向宽带基站发送从第一窄带基站越区至第二窄带基站的越区请求，以使宽带基站通知第二窄带基站为多模终端分配业务信道，并通知第一窄带基站将需要转发至多模终端的语音同步转发至宽带基站。
在窄带呼叫过程中，如果多模终端找到信号更好的第二窄带基站，则向宽带基站发起越区请求。其中，越区请求中可携带第二窄带基站的基站标识信息，该基站标识信息可以包括基站系统码、控制信道号等。
需要说明的是，在进行上述过程时，多模终端依然使用窄带模块接收和播 放第一窄带基站发送的语音。
步骤S403：当接收到宽带网络发送的指示窄带基站完成越区准备的通知消息后，通过宽带模块接收和播放宽带基站转发的来自第一窄带基站的语音，停止通过窄带模块接收和播放语音，并通过窄带模块将业务信道切换至第二窄带基站为多模终端分配的业务信道。
当窄带基站完成越区准备时，会向宽带基站发送指示完成越区准备的通知消息，宽带基站接收到窄带基站发送的通知消息后，向多模终端发送指示窄带基站完成越区准备的通知消息，并且，在窄带基站完成越区准备时，语音也会同步转发至宽带基站，宽带基站向多模终端转发来自第一窄带基站的语音，多模终端接收到宽带基站的通知消息，停止通过窄带模块接收和播放语音，开始通过宽带模块接收和播放语音。
在多模终端通过宽带模块接收和播放宽带基站转发的语音时，多模终端同时通过窄带模块将业务信道切换至第二窄带基站为其分配的业务信道，具体地，第二窄带基站在为多模终端分配完信道之后，会向宽带基站发送越区响应，该越区响应中携带有目标信道信息，该目标信道信息即为第二窄带基站为多模终端分配的信道的信息，宽带基站接收到越区响应后，会向多模终端发送指示窄带基站完成越区准备的通知消息，并在该通知消息中携带目标信道信息，当多模终端接收到该通知消息后，会通过窄带模块将业务信道切换为与目标信道信息对应的业务信道。
步骤S404：在完成信道切换并与第二窄带基站同步后，通过窄带模块接收和播放第二窄带基站转发的语音，停止通过宽带基站接收和播放语音。
在完成信道切换并与第二窄带基站同步后，向宽带基站发送指示越区处理完成的通知消息，以使宽带基站停止向多模终端转发语音。
本发明实施例提供的越区切换方法，通过宽带网络支撑多模终端由一窄带网络向另一窄带网络的越区切换过程，将影响语音接收的流程迁移到宽带链路完成，即当多模终端中的窄带模块进行与语音接收相冲突的操作时，通过宽带模块继续进行语音的接收和处理，从而实现窄带呼叫过程中无缝越区和平滑的语音接续，完全解决了语音丢失和卡顿的情况，给用户提供了更好的体验。
如果站在宽带基站一侧来看本发明的技术方案，请参阅图5，示出了本发明实施例提供的越区切换方法的流程示意图，该方法可以包括：
步骤S501：当接收到多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求时，向目标窄带基站发送越区通知消息。
其中，目标窄带包括第一窄带基站和第二窄带基站，越区通知消息用于指示第二窄带基站为多模终端分配业务信道，还用于指示第一窄带基站将需要转发至多模终端的语音同步转发至宽带基站及第二窄带基站。
对于第二窄带基站而言，其在接收到越区通知消息后，为多模终端分配业务信道，将分配的业务信道的信息发送至宽带基站，对于第一窄带基站而言，其将需要转发至多模终端的语音同步转发至宽带基站及第二窄带基站。
步骤S502：接收第二窄带基站发送的目标信道信息，并接收第一窄带基站转发的语音。
其中，目标信道信息为第二窄带基站为多模终端分配的业务信道的信息。
步骤S503：将目标信道信息发送至多模终端，以使多模终端通过窄带模块将业务信道切换至与目标信道信息对应的业务信道，并将接收的语音转发至多模终端，以使多模终端通过宽带模块接收和播放该语音。
多模终端切换完信道并与第二窄带基站同步之后，可向宽带基站发送指示越区处理完成的通知消息，则本实施例提供的方法还可以包括：
步骤S504：接收多模终端发送的、指示越区处理完成的通知消息，停止向多模终端转发语音。
需要说明的是，对于多模终端而言，其在发起越区切换之前，应先获得窄带邻站信息，进而才能根据窄带邻站信息确定第二窄带基站。在一种可能的实现方式中，窄带邻站信息可由宽带基站发给多模终端，即本发明实施例提供的越区切换方法还可以包括：向多模终端的宽带模块发送窄带邻站信息，以使多模终端基于窄带邻站信息确定第二窄带基站。具体地，宽带基站可以广播的方式下发窄带邻站信息至多模终端的宽带模块。
本发明实施例提供的越区切换方法，通过宽带网络可支撑多模终端由一窄带网络向另一窄带网络的越区切换过程，将影响语音接收的流程迁移到宽带链路完成，这使得当多模终端中的窄带模块进行与语音接收相冲突的操作时，可 通过宽带模块继续进行语音的接收和处理，从而实现窄带呼叫过程中无缝越区和平滑的语音接续，完全解决了语音丢失和卡顿的情况，给用户提供了更好的体验。
以下通过多模终端、宽带基站与窄带基站之间的信息交互来对本发明实现多模终端从一窄带网络无缝越区切换至另一窄带网络的过程进行说明。请参阅图6，示出了通过多模终端、宽带基站与窄带基站之间的信息交互过程实现多模终端无缝越区切换的流程示意图，该过程可以包括：
步骤S601：多模终端通过宽带模块接收宽带基站发送的窄带邻站信息。
其中，窄带邻站信息为与第一窄带基站相邻的窄带基站的信息，第一窄带基站为当前与多模终端进行通信的窄带基站，即该多模终端当前正通过第一窄带基站与另一终端进行通话。
步骤S602：多模终端基于窄带邻站信息获取与第一窄带基站相邻的至少一个窄带基站的控制信道信息。
步骤S603：多模终端基于控制信道信息，从与第一窄带基站相邻的至少一个窄带基站中确定第二窄带基站。
步骤S604：多模终端向宽带基站发送由第一窄带基站越区至第二窄带基站的越区请求。
其中，越区请求中携带第二窄带基站的基站标识，基站标识可以包括基站系统码、控制信道号等。
步骤S605：宽带基站接收到越区请求之后，基于越区请求中的基站标识向第二窄带基站发送越区通知消息，同时向第一窄带基站发送越区通知消息。
步骤S606：第二窄带基站接收到越区通知消息之后，为多模终端分配业务信道，并在为多模终端分配完业务信道之后，向宽带基站发送越区响应。
其中，越区响应中携带有目标信道信息，目标信道信息即为第二窄带基站为多模终端分配的业务信道的信息，目标信道信息可以包括业务信道号和时隙号。
步骤S607：宽带基站接收到越区响应后，向多模终端发送指示窄带基站完成越区准备的通知消息。
其中，指示窄带基站完成越区准备的通知消息中携带有目标信道信息。
步骤S608：第一窄带基站接收到越区通知消息之后，将需要转发至多模终端的语音同步转发至宽带基站。
步骤S609：宽带基站将从第一窄带基站接收的语音转发至多模终端。
步骤S610：多模终端接收到指示窄带基站完成越区准备的通知消息之后，停止通过窄带模块接收和播放语音，并通过窄带模块将业务信道切换至第二窄带基站为其分配的业务信道，同时，开始通过宽带模块接收和播放语音。
具体地，多模终端接收到指示窄带基站完成越区准备的通知消息后，从该通知消息中获取目标信道信息，停止通过窄带模块接收和播放语音，通过窄带模块将业务信道切换至目标信道信息对应的业务信道。
步骤S611：多模终端通过窄带模块完成信道切换并与第二窄带基站同步后，通过宽带模块向宽带基站发送指示越区处理完成的通知消息。
步骤S612：宽带基站接收到指示越区处理完成的通知消息后，停止向多模终端转发语音。
步骤S613：多模终端通过窄带模块接收和播放第二窄带基站转发的语音。
本发明实施例提供的越区切换方法，通过宽带网络支撑多模终端由一窄带网络向另一窄带网络的越区切换过程，将影响语音接收的流程迁移到宽带链路完成，即当多模终端中的窄带模块进行与语音接收相冲突的操作时，通过宽带模块继续进行语音的接收和处理，从而实现窄带呼叫过程中无缝越区和平滑的语音接续，完全解决了语音丢失和卡顿的情况，给用户提供了更好的体验。
以下通过一具体实例，结合图7a-7d对本发明实施例提供的越区切换方法进行说明：
如图7a所示，多模终端MS1与多模终端MS2在窄带基站1进行通话，MS2正在向窄带基站2方向移动，MS2可以通过宽带基站实时获得当前窄带邻站信息。
如图7b所示，当MS2移动到窄带基站2范围内时，窄带基站1的信号变差，此时，MS2基于当前窄带邻站信息进行邻站扫描，确定窄带基站2的信号较好，则MS2向宽带基站发起越区至窄带基站2的越区请求。宽带基站接收到越区请求后，通知窄带基站2为MS2分配业务信道，并通知窄带基站1 将需要转发至MS2的语音同步转发至宽带基站。在上述过程中，MS2一直通过窄带模块接收窄带基站1转发的语音。
如图7c所示，窄带基站1将语音转发至宽带基站，窄带基站2把为MS2分配的信道的信息发送至宽带基站，宽带基站将信道信息发送给MS2，并将语音转发给MS2。MS2接收到信道信息后，停止通过窄带模块接收语音，基于信道信息通过窄带模块进行信道切换，在这个过程中，MS2通过宽带模块接收宽带基站转发的语音。
MS2在完成信道切换后，向宽带基站发送越区处理完成的通知消息，宽带基站接收到该通知消息后，停止向MS2转发语音，MS2通过窄带模块接收窄带基站2转发的语音，如图7d所示。
与上述越区切换方法相对应，本发明实施例还提供了一种越区切换装置，该装置应用于包括窄带模块和宽带模块的多模终端，请参阅图8，示出了该装置80的结构示意图，可以包括：确定模块801、第一发送模块802、接收模块803、第一处理模块804、信道切换模块805和第二处理模块806。
确定模块801，用于确定第二窄带基站。
其中，第二窄带基站为当前与多模终端进行通信的第一窄带基站相邻的可用窄带基站。
第一发送模块802，用于通过宽带模块向宽带基站发送从第一窄带基站越区至确定模块801确定的第二窄带基站的越区请求，以使宽带基站通知第二窄带基站为多模终端分配业务信道，并通知第一窄带基站将需要发送至多模终端的语音转发至宽带基站。
接收模块803，用于接收宽带基站发送的指示窄带基站完成越区准备的通知消息。
第一处理模块804，用于在接收模块803接收到指示窄带基站完成越区准备的通知消息时，通过宽带模块接收和播放宽带基站转发的语音，停止通过窄带模块接收和播放语音。
信道切换模块805，用于通过窄带模块将业务信道切换至第二窄带基站为多模终端分配的业务信道。
第二处理模块806，用于在信道切换模块805完成信道切换并与第二窄带基站同步后，通过窄带模块接收和播放第二窄带基站转发的语音。
本发明实施例提供的越区切换装置，通过宽带网络支撑多模终端由一窄带网络向另一窄带网络的越区切换过程，将影响语音接收的流程迁移到宽带链路完成，即当多模终端中的窄带模块进行与语音接收相冲突的操作时，通过宽带模块继续进行语音的接收和处理，从而实现窄带呼叫过程中无缝越区和平滑的语音接续，完全解决了语音丢失和卡顿的情况，给用户提供了更好的体验。
在上述实施例提供的越区切换装置80中，确定模块801可以包括：第一获取子模块、第二获取子模块和确定子模块。
第一获取子模块，用于从宽带基站获取窄带邻站信息，窄带邻站信息包括与第一窄带基站相邻的至少一个可用窄带基站的信息。
第二获取子模块，用于基于窄带邻站信息，获取与第一窄带基站相邻的至少一个可用窄带基站的控制信道信息。
确定子模块，用于基于控制信道信息，从与第一窄带基站相邻的至少一个可用窄带基站中确定第二窄带基站。
在上述实施例提供的越区切换装置80中，指示窄带基站完成越区准备的通知消息中携带有目标信道信息，目标信道信息为目标窄带基站为多模终端分配的业务信道的信息，则信道切换模块805，具体用于从指示窄带基站完成越区准备的通知消息中获取所述目标信道信息，通过窄带模块将业务信道切换至与目标信道信息对应的业务信道。
上述实施例提供的越区切换装置80还可以包括：第二发送模块。
第二发送模块，用于在完成信道切换并与第二窄带基站同步后，向宽带基站发送指示越区处理完成的通知消息，以使宽带基站停止向多模终端转发语音。
本发明实施例还提供了一种越区切换装置，该装置应用于宽带基站，请参 阅图9，示出了该装置90的结构示意图，该装置可以包括：第一接收模块901、第一发送模块902、第二接收模块903、第三接收模块904和第二发送模块905。
第一接收模块901，用于接收多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求。
第一发送模块902，用于当第一接收模块接收到越区请求时，向目标窄带基站发送越区通知消息，其中，目标窄带基站包括第一窄带基站和第二窄带基站，越区通知消息用于指示第二窄带基站为多模终端分配业务信道、指示第一窄带基站或第二窄带基站将需要转发至多模终端的语音同步转发至宽带基站和所述第二窄带基站。
第二接收模块903，用于接收第二窄带基站发送的目标信道信息，目标信道信息为第二窄带基站为多模终端分配的业务信道的信息。
第三接收模块904，用于接收第一窄带基站转发的语音；
第二发送模块905，用于将第二接收模块903接收的目标信道信息发送至多模终端，以使多模终端通过窄带模块将业务信道切换至目标信道信息对应的业务信道。
第三发送模块906，用于将第三接收模块904接收的语音转发至多模终端，以使多模终端通过宽带模块接收和播放语音。
本发明实施例提供的越区切换装置，通过宽带网络可支撑多模终端由一窄带网络向另一窄带网络的越区切换过程，将影响语音接收的流程迁移到宽带链路完成，这使得当多模终端中的窄带模块进行与语音接收相冲突的操作时，可通过宽带模块继续进行语音的接收和处理，从而实现窄带呼叫过程中无缝越区和平滑的语音接续，完全解决了语音丢失和卡顿的情况，给用户提供了更好的体验。
上述实施例提供的越区切换装置90，还可以包括：第四发送模块。
第四发送模块，用于向多模终端的宽带模块发送窄带邻站信息，以使多模终端基于窄带邻站信息确定第二窄带基站，其中，窄带邻站信息包括与所述第一窄带基站相邻的至少一个可用窄带基站的信息。
上述实施例提供的越区切换装置90，还可以包括：第四接收模块和第五发送模块和通知模块。
第四接收模块，用于接收多模终端发送的指示越区处理完成的通知消息。
第三发送模块906，还用于当第四接收模块接收到指示越区处理完成的通知消息时，停止向多模终端转发语音。
第五发送模块，还用于向第一窄带基站发送指示停止向宽带基站转发语音的通知消息。
通知模块，用于通知第一窄带基站停止向宽带基站发送语音。
本发明实施例还提供了一种包括宽带模块和窄带模块的多模终端，请参阅图10，示出了该多模终端100的结构示意图，可以包括：存储器1001和处理器1002。
存储器1001，用于存储程序；
处理器1002，用于执行所程序，所述程序具体用于：
确定第二窄带基站，所述第二窄带基站为当前与所述多模终端进行通信的第一窄带基站相邻的可用窄带基站；
通过所述宽带模块向所述宽带基站发送从所述第一窄带基站越区至所述第二窄带基站的越区请求，以使所述宽带基站通知所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站，并通知所述第二窄带基站为所述多模终端分配业务信道；
当接收到所述宽带基站发送的指示窄带基站完成越区准备的通知消息后，通过所述宽带模块接收和播放所述宽带基站转发的语音，停止通过所述窄带基站接收和播放语音，并通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模终端分配的业务信道；
在完成信道切换并与所述第二窄带基站同步后，通过所述窄带模块接收和播放所述第二窄带基站发送的语音，停止通过所述宽带模块接收和播放语音。
本发明实施例还提供了一种可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时，实现上述应用于多模终端的越区切换方法的各个步骤。
本发明实施例还提供了一种宽带基站，请参阅图11，示出了该宽带基站110的结构示意图，可以包括：存储器1101和处理器1102。
存储器1101，用于存储程序；
处理器1102，用于执行所述程序，所述程序具体用于：
当接收到多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求时，向目标窄带基站发送越区通知消息，其中，所述目标窄带基站包括所述第一窄带基站和所述第二窄带基站，所述越区通知消息用于指示所述第二窄带基站为所述多模终端分配业务信道、指示所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站和所述第二窄带基站；
接收所述第二窄带基站发送的目标信道信息，并接收所述第一窄带基站转发的语音，所述目标信道信息为所述第二窄带基站为所述多模终端分配的业务信道的信息；
将所述目标信道信息发送至所述多模终端，以使所述多模终端通过窄带模块将业务信道切换至所述目标信道信息对应的业务信道，并将接收的所述语音转发至所述多模终端，以使所述多模终端通过宽带模块接收和播放所述语音。
本发明实施例还提供了一种可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时，实现上述应用于宽带基站的越区切换方法的各个步骤。
在本申请所提供的几个实施例中，应该理解到，所揭露的方法、装置和设备，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些通信接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部 单元来实现本实施例方案的目的。另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，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所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (13)

  1. 一种越区切换方法，其特征在于，应用于包括窄带模块和宽带模块的多模终端，所述方法包括：
    确定第二窄带基站，所述第二窄带基站为当前与所述多模终端进行通信的第一窄带基站相邻的可用窄带基站；
    通过所述宽带模块向所述宽带基站发送从所述第一窄带基站越区至所述第二窄带基站的越区请求，以使所述宽带基站通知所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站，并通知所述第二窄带基站为所述多模终端分配业务信道；
    当接收到所述宽带基站发送的指示窄带基站完成越区准备的通知消息后，通过所述宽带模块接收和播放所述宽带基站转发的语音，停止通过所述窄带基站接收和播放语音，并通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模终端分配的业务信道；
    在完成信道切换并与所述第二窄带基站同步后，通过所述窄带模块接收和播放所述第二窄带基站发送的语音，停止通过所述宽带模块接收和播放语音。
  2. 根据权利要求1所述的越区切换方法，其特征在于，所述确定第二窄带基站，包括：
    从所述宽带基站获取窄带邻站信息，所述窄带邻站信息包括与所述第一窄带基站相邻的至少一个可用窄带基站的信息；
    基于所述窄带邻站信息，获取与所述第一窄带基站相邻的至少一个可用窄带基站的控制信道信息；
    基于所述控制信道信息，从与所述第一窄带基站相邻的至少一个可用窄带基站中确定所述第二窄带基站。
  3. 根据权利要求1所述的越区切换方法，其特征在于，所述指示窄带基站完成越区准备的通知消息中携带有目标信道信息，所述目标信道信息为所述目标窄带基站为所述多模终端分配的业务信道的信息；
    所述通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模终端分配的业务信道，包括：
    从所述指示窄带基站完成越区准备的通知消息中获取所述目标信道信息；
    通过所述窄带模块将业务信道切换至与所述目标信道信息对应的业务信道。
  4. 根据权利要求1所述的越区切换方法，其特征在于，所述方法还包括：
    在完成信道切换并与所述第二窄带基站同步后，向所述宽带基站发送指示越区处理完成的通知消息，以使所述宽带基站停止向所述多模终端转发语音。
  5. 一种越区切换方法，其特征在于，应用于宽带基站，所述越区切换方法包括：
    当接收到多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求时，向目标窄带基站发送越区通知消息，其中，所述目标窄带基站包括所述第一窄带基站和所述第二窄带基站，所述越区通知消息用于指示所述第二窄带基站为所述多模终端分配业务信道、指示所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站和所述第二窄带基站；
    接收所述第二窄带基站发送的目标信道信息，并接收所述第一窄带基站转发的语音，所述目标信道信息为所述第二窄带基站为所述多模终端分配的业务信道的信息；
    将所述目标信道信息发送至所述多模终端，以使所述多模终端通过窄带模块将业务信道切换至所述目标信道信息对应的业务信道，并将接收的所述语音转发至所述多模终端，以使所述多模终端通过宽带模块接收和播放所述语音。
  6. 根据权利要求5所述的越区切换方法，其特征在于，还包括：
    向所述多模终端的宽带模块发送窄带邻站信息，以使所述多模终端基于所述窄带邻站信息确定所述第二窄带基站，其中，窄带邻站信息包括与所述第一窄带基站相邻的至少一个可用窄带基站的信息。
  7. 根据权利要求5所述的越区切换方法，其特征在于，还包括：
    当接收到所述多模终端发送的指示越区处理完成的通知消息时，停止向所述多模终端转发语音，并通知所述第一窄带基站停止向所述宽带基站发送语音。
  8. 一种越区切换装置，其特征在于，应用于包括窄带模块和宽带模块的多模终端，所述装置包括：确定模块、发送模块、接收模块、第一处理模块、 信道切换模块和第二处理模块；
    所述确定模块，用于确定第二窄带基站，所述第二窄带基站为当前与所述多模终端进行通信的第一窄带基站相邻的可用窄带基站；
    所述发送模块，用于通过所述宽带模块向所述宽带基站发送从所述第一窄带基站越区至所述确定模块确定的所述第二窄带基站的越区请求，以使所述宽带基站通知所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站，并通知所述第二窄带基站为所述多模终端分配业务信道；
    所述接收模块，用于接收宽带基站发送的指示窄带基站完成越区准备的通知消息；
    所述第一处理模块，用于在所述接收模块接收到所述指示窄带基站完成越区准备的通知消息时，通过所述宽带模块接收和播放所述宽带基站转发的语音，停止通过所述窄带模块接收和播放语音；
    所述信道切换模块，用于通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模终端分配的业务信道；
    所述第二处理模块，用于在完成信道切换并与所述第二窄带基站同步后，通过所述窄带模块接收和播放所述第二窄带基站发送的语音，停止通过所述宽带模块接收和播放语音。
  9. 一种越区切换装置，其特征在于，应用于宽带基站，所述装置包括：第一接收模块、第一发送模块、第二接收模块、第三接收模块和第二发送模块；
    所述第一接收模块，用于接收多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求；
    所述第一发送模块，用于当所述第一接收模块接收到所述越区请求时，向目标窄带基站发送越区通知消息，其中，所述目标窄带基站包括所述第一窄带基站和所述第二窄带基站，所述越区通知消息用于指示所述第二窄带基站为所述多模终端分配业务信道、指示所述第一窄带基站或所述第二窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站和所述第二窄带基站；
    所述第二接收模块，用于接收所述第二窄带基站发送的目标信道信息，所述目标信道信息为所述第二窄带基站为所述多模终端分配的业务信道的信息；
    所述第三接收模块，用于接收所述第一窄带基站发送的语音；
    所述第二发送模块，用于将所述第二接收模块接收的所述目标信道信息发送至所述多模终端，以使所述多模终端通过所述窄带模块将业务信道切换至所述目标信道信息对应的业务信道；
    所述第三发送模块，用于将所述第三接收模块接收的所述语音转发至所述多模终端，以使所述多模终端通过宽带模块接收和播放所述语音。
  10. 一种多模终端，其特征在于，所述多模终端包括宽带模块和窄带模块，还包括：存储器和处理器；
    所述存储器，用于存储程序；
    所述处理器，用于执行所述程序，所述程序具体用于：
    确定第二窄带基站，所述第二窄带基站为当前与所述多模终端进行通信的第一窄带基站相邻的可用窄带基站；
    通过所述宽带模块向所述宽带基站发送从所述第一窄带基站越区至所述第二窄带基站的越区请求，以使所述宽带基站通知所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站，并通知所述第二窄带基站为所述多模终端分配业务信道；
    当接收到所述宽带基站发送的指示窄带基站完成越区准备的通知消息后，通过所述宽带模块接收和播放所述宽带基站转发的语音，停止通过所述窄带基站接收和播放语音，并通过所述窄带模块将业务信道切换至所述第二窄带基站为所述多模终端分配的业务信道；
    在完成信道切换并与所述第二窄带基站同步后，通过所述窄带模块接收和播放所述第二窄带基站发送的语音，停止通过所述宽带模块接收和播放语音。
  11. 一种可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时，实现如权利要求1至4中任一项所述的越区切换方法的各个步骤。
  12. 一种宽带基站，其特征在于，包括：存储器和处理器；
    所述存储器，用于存储程序；
    所述处理器，用于执行所述程序，所述程序具体用于：
    当接收到多模终端发送的、由第一窄带基站越区至第二窄带基站的越区请求时，向目标窄带基站发送越区通知消息，其中，所述目标窄带基站包括所述 第一窄带基站和所述第二窄带基站，所述越区通知消息用于指示所述第二窄带基站为所述多模终端分配业务信道、指示所述第一窄带基站将需要转发至所述多模终端的语音同步转发至所述宽带基站和所述第二窄带基站；
    接收所述第二窄带基站发送的目标信道信息，并接收所述第一窄带基站转发的语音，所述目标信道信息为所述第二窄带基站为所述多模终端分配的业务信道的信息；
    将所述目标信道信息发送至所述多模终端，以使所述多模终端通过窄带模块将业务信道切换至所述目标信道信息对应的业务信道，并将接收的所述语音转发至所述多模终端，以使所述多模终端通过宽带模块接收和播放所述语音。
  13. 一种可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时，实现如权利要求5至7中任一项所述的越区切换方法的各个步骤。
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