WO2017201725A1 - 一种小区切换方法，终端以及核心网设备 - Google Patents

一种小区切换方法，终端以及核心网设备 Download PDF

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Publication number
WO2017201725A1
WO2017201725A1 PCT/CN2016/083582 CN2016083582W WO2017201725A1 WO 2017201725 A1 WO2017201725 A1 WO 2017201725A1 CN 2016083582 W CN2016083582 W CN 2016083582W WO 2017201725 A1 WO2017201725 A1 WO 2017201725A1
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Prior art keywords
core network
narrowband
broadband
terminal
serving cell
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PCT/CN2016/083582
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English (en)
French (fr)
Inventor
陈宏�
尧俊峰
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海能达通信股份有限公司
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Priority to PCT/CN2016/083582 priority Critical patent/WO2017201725A1/zh
Publication of WO2017201725A1 publication Critical patent/WO2017201725A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a cell handover method, a terminal, and a core network device.
  • the police Digital Trunking (PDT) system In the field of professional trunking communication, the police Digital Trunking (PDT) system, the Terrestrial Trunked Radio (Tetra) system and the P25 (Project25) are several mainstream systems, all of which belong to the narrowband cluster system.
  • Narrowband trunking communication systems such as PDT, Tetra, and P25 can provide users with good narrowband voice services, but have the disadvantage of low transmission rate in data services, and cannot meet the needs of growing broadband services such as images and data.
  • the problem is that the industry is generally optimistic about narrow-band systems and broadband systems for broadband and narrow-band cluster convergence. Broadband systems such as Long Term Evolution (LTE) systems, wideband and narrowband cluster convergence methods such as PDT+LTE, Tetra+LTE, P25+LTE, etc. .
  • the core networks are respectively constructed and interconnected through gateways.
  • the network architecture of the gateway interconnection can be as shown in Figure 1. After that, the core network will gradually transition to the unified integration phase.
  • the unified network architecture can be as shown in Figure 2.
  • Terminal types supported by wideband and narrowband cluster systems include narrowband terminals, broadband terminals, and dual mode terminals.
  • the existing broadband cluster and narrowband cluster standards support the switching function: for the broadband cluster terminal, the switching scheme defined by the broadband standard (for example, LTE handover) can be adopted; for the narrowband cluster terminal, the handover scheme defined by the narrowband cluster standard can be adopted (for example, : PDT handover); for dual-mode terminals, switching from a broadband cell to a broadband cell, a broadband handover scheme can be adopted, and a narrowband handover scheme can be adopted from a narrowband cell to a narrowband cell. Switching from a narrowband cell to a broadband cell is not covered by existing standards and technical specifications.
  • the embodiment of the present invention provides a cell handover method and a terminal, which can implement handover from a broadband cell to a narrowband cell to avoid dropped calls.
  • an embodiment of the present invention provides a cell handover method, including: a terminal participating in a current call in a narrowband serving cell, where the terminal is registered in a broadband serving cell and the narrowband serving cell; And acquiring, by the terminal, information about the radio resource of the current call in the broadband serving cell; the terminal switching from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and continuing the current call by using the radio resource.
  • the information about the radio resource of the current call that is located in the broadband serving cell is: And requesting the core network device to allocate a radio resource to the broadband serving cell for the current call; the terminal receives the information of the radio resource sent by the broadband cluster base station corresponding to the broadband serving cell.
  • the terminal requests the core network device after the narrowband serving cell participates in the current call.
  • the method further includes:
  • the terminal determines whether the current call is a group call, and if yes, the terminal receives broadcast information sent by the broadband serving cell;
  • the terminal determines, according to the broadcast information, whether the terminal participates in the group call, and if not, triggers the terminal to request the core network device to allocate radio resources in the broadband serving cell for the current call.
  • the terminal requests the core network device to be the current call.
  • the broadband service cell allocates radio resources including:
  • the terminal sends a cell handover request to the broadband core network through the broadband cluster base station, where the cell handover request includes the number of the terminal, and the session description protocol (SDP) of the terminal, the narrowband serving cell a wireless location identification number (English name: Location Area Identity, LAI for short) and a traffic channel number of the narrowband serving cell, so that the broadband core network sends a third cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs.
  • SDP session description protocol
  • the third cell handover preparation request includes the number, the SDP, the LAI, and the traffic channel number, and indicates that the broadband cluster base station allocates a radio resource to the current call according to the number, the SDP and the call context, the call context
  • the broadband core network is queried according to the call identity (English name: Identity, ID: ID) sent by the narrowband core network, and the call ID is obtained by the narrowband core network according to the LAI and the service channel number.
  • the requesting, by the terminal, the core network device to allocate the radio resource to the broadband serving cell for the current call includes:
  • the terminal sends a cell handover request to the narrowband core network to which the narrowband serving cell belongs by using the narrowband cluster base station corresponding to the narrowband serving cell, where the cell handover request carries the number of the terminal and the SDP of the terminal, so that the narrowband core network
  • the broadband core network sends a fourth cell handover preparation request, the fourth cell handover preparation request carries the number, the SDP and the call ID of the current call, and the call ID is used by the broadband core network to query a call context of the current call, where The number, the SDP and the call context for the broadband core network instruct the broadband trunk base station to allocate radio resources for the current call.
  • the terminal requests the core network device to be the current call.
  • the broadband service cell allocates radio resources including:
  • the terminal sends a cell handover request to the broadband core network to which the broadband serving cell belongs by using the broadband cluster base station corresponding to the broadband serving cell, so that the broadband core network sends a fifth cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs.
  • the fifth cell handover preparation request includes a number of the terminal, an SDP of the terminal, an LAI of the narrowband serving cell, and a service channel number of the narrowband serving cell, and indicates that the broadband cluster base station includes the number according to the SDP and the
  • the call context allocates a radio resource for the current call, and the call context is queried by the group-owned narrowband core network according to the call ID and sent to the broadband core network, and the call ID is determined by the narrowband core network to which the narrowband serving cell belongs, according to the LAI and the service.
  • the channel number is queried and sent to the group to the home narrowband core network.
  • the terminal requests the core network device to be the current call.
  • the broadband service cell allocates radio resources including:
  • the terminal sends a cell handover request to the narrowband core network to which the narrowband serving cell belongs by using the narrowband trunk base station to which the narrowband serving cell belongs, where the cell handover request includes the number of the terminal and the SDP of the terminal, so that the narrowband serving cell belongs to
  • the narrowband core network queries the call ID of the current call and sends the call ID to the group home narrowband core network, and the call ID is used by the group narrowband core network to query the call context of the current call, the number, the SDP and the call context are used for the
  • the broadband core network instructs the broadband cluster base station to allocate radio resources for the current call.
  • the terminal requests the core network device to allocate radio resources to the broadband serving cell for the current call, including:
  • the terminal determines whether the current call is a single call
  • the terminal sends a cell handover request to the broadband core network to which the broadband serving cell belongs by using the broadband cluster base station corresponding to the broadband serving cell, so that the broadband core network belongs to the narrowband of the narrowband serving cell.
  • the core network sends a first cell handover preparation request, where the first cell handover preparation request includes a number of the terminal, an SDP of the terminal, an LAI of the narrowband serving cell, and a service channel number of the narrowband serving cell, and indicates the broadband cluster base station.
  • the SDP and the call context allocate radio resources for the current call, and the call context is queried by the narrowband core network according to the LAI and the service channel number and sent to the broadband core network.
  • the terminal requests the core network device to allocate wireless to the broadband serving cell for the current call.
  • Resources include:
  • the terminal determines whether the current call is a single call
  • the terminal sends a cell handover request to the narrowband core network to which the narrowband serving cell belongs by using the narrowband trunk base station corresponding to the narrowband serving cell, so that the narrowband core network sends the second to the broadband core network.
  • a cell handover preparation request the second cell handover preparation request carries the number, the SDP and the call context of the current call, the call context information is obtained by the narrowband core network, the number, the SDP and the call context are used for the
  • the broadband core network instructs the broadband cluster base station to allocate radio resources for the current call.
  • the terminal requests the core network device to allocate wireless to the broadband serving cell for the current call.
  • Resources include:
  • the terminal sends a cell handover request to the unified converged core network by using the broadband cluster base station corresponding to the broadband serving cell, where the cell handover request includes the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the service channel number, So that the unified converged core network queries the call context of the current call according to the LAI and the service channel number, and indicates that the broadband cluster base station according to the number, the SDP and the call context allocate radio resources for the current call.
  • the terminal requests the core network device to allocate radio resources to the broadband serving cell for the current call, including:
  • the terminal sends a cell handover request to the unified converged core network by using the narrowband trunking base station corresponding to the narrowband serving cell, where the cell handover request includes the number of the terminal, and the SDP of the terminal, so that the unified converged core network queries the current call.
  • the acquiring, by the terminal, the information about the radio resource of the current call in the broadband serving cell includes:
  • the terminal determines whether the current call is a group call, and if yes, the terminal receives broadcast information sent by the broadband serving cell;
  • the terminal determines, according to the broadcast information, whether the terminal participates in the group call, and if yes, the terminal receives information about the radio resource of the current call sent by the broadband cluster base station corresponding to the broadband serving cell.
  • an embodiment of the present invention provides a terminal, where the terminal has a function implemented by the terminal in the foregoing method.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the terminal includes:
  • a calling module configured to participate in a current call in a narrowband serving cell, where the terminal is registered in the broadband serving cell and the narrowband serving cell;
  • An acquiring module configured to acquire information about a radio resource of the current call that is involved by the calling module in the broadband serving cell
  • a processing module configured to switch, according to the information about the radio resource obtained by the acquiring module, the narrowband serving cell to the broadband serving cell, and continue the current call by using the radio resource.
  • the terminal includes:
  • Transceiver processor and bus
  • the transceiver, the processor is connected through the bus;
  • the transceiver is configured to execute the following instructions:
  • the terminal Participating in the current call in the narrowband serving cell, the terminal is registered in the broadband serving cell and the narrowband serving cell; acquiring the radio resource of the current call participating in the calling module in the broadband serving cell Information;
  • the processor is configured to execute the following instructions:
  • the information about the radio resource obtained by the acquiring module is switched from the narrowband serving cell to the broadband serving cell, and the current call is continued by using the radio resource.
  • the embodiment of the present invention provides a cell handover method, including: a request of a core network device receiving terminal to allocate a radio resource to a broadband serving cell for a current call, where the terminal participates in the current call in a narrowband serving cell, where the terminal is in the The broadband serving cell and the narrowband serving cell are both registered; the core network device sends the information of the radio resource to the terminal, so that the terminal can switch from the narrowband serving cell to the broadband serving cell according to the information of the radio resource.
  • the current call including: a request of a core network device receiving terminal to allocate a radio resource to a broadband serving cell for a current call, where the terminal participates in the current call in a narrowband serving cell, where the terminal is in the The broadband serving cell and the narrowband serving cell are both registered; the core network device sends the information of the radio resource to the terminal, so that the terminal can switch from the narrowband serving cell to the broadband serving cell according to the information of the radio resource.
  • the current call including: a request of a core network
  • the core network device when the core network device is a broadband core network to which the broadband serving cell belongs, the core network device receives the request of the terminal. Allocating radio resources to the broadband serving cell for the current call includes:
  • the broadband core network sends a first cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs, the first cell handover preparation request includes a number of the terminal, a session description protocol SDP of the terminal, and a wireless location of the narrowband serving cell An identification number LAI and a traffic channel number of the narrowband serving cell, such that the narrowband core network queries the call context of the current call according to the LAI and the service channel number;
  • the broadband core network instructs the broadband cluster base station to allocate radio resources for the current call according to the number, the SDP and the call context.
  • the core network device when the core network device is a narrowband core network to which the narrowband serving cell belongs, the core network device receives the request of the terminal. Allocating radio resources to the broadband serving cell for the current call includes:
  • the narrowband core network sends a third cell handover preparation request to the broadband core network, where the third cell handover preparation request carries the number of the terminal, the SDP of the terminal, and the call context of the current call,
  • the call context information is obtained by the narrowband core network query, such that the broadband core network instructs the broadband cluster base station to allocate a radio resource for the current call according to the number, the SDP and the call context.
  • the core network device when the core network device is a unified converged core network, the request of the core network device receiving the terminal is the current call in the broadband.
  • the serving cell allocates radio resources including:
  • a cell handover request sent by the terminal by the broadband cluster base station corresponding to the broadband serving cell where the cell handover request includes a number of the terminal, an SDP of the terminal, an LAI of the narrowband serving cell, and the narrowband serving cell Traffic channel number;
  • the unified converged core network queries the call context of the current call according to the LAI and the service channel number;
  • the unified converged core network instructs the broadband cluster base station to allocate radio resources for the current call according to the number, the SDP and the call context.
  • the core network device when the core network device is a unified converged core network, the request of the core network device receiving the terminal is the current call in the broadband.
  • the serving cell allocates radio resources including:
  • the unified converged core network receives a cell handover request sent by the terminal through the narrowband cluster base station corresponding to the narrowband serving cell, where the cell handover request includes the number of the terminal, and the SDP of the terminal;
  • the unified converged core network queries the call context of the current call
  • the unified converged core network instructs the broadband cluster base station to allocate radio resources for the current call according to the number, the SDP and the call context.
  • the core network device when the core network device is a broadband core network to which the broadband serving cell belongs, the core network device receives the request of the terminal. Allocating radio resources to the broadband serving cell for the current call includes:
  • a cell handover request sent by the terminal by the broadband cluster base station where the cell handover request includes a number of the terminal, an SDP of the terminal, an LAI of the narrowband serving cell, and a service channel number of the narrowband serving cell;
  • the broadband core network sends a fourth cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs, the fourth cell handover preparation request including the number, the SDP, the LAI, and the service channel number, so that the narrowband core network Querying the current call according to the LAI and the service channel number Call identity ID;
  • the broadband core network queries the call context of the current call according to the call ID;
  • the broadband core network instructs the broadband cluster base station to allocate radio resources for the current call according to the number, the SDP and the call context.
  • the core network device when the core network device is a narrowband core network to which the narrowband serving cell belongs, the core network device receives the request of the terminal. Allocating radio resources to the broadband serving cell for the current call includes:
  • the narrowband core network receives a cell handover request sent by the terminal through the narrowband cluster base station corresponding to the narrowband serving cell, and the cell handover request carries the number of the terminal and the SDP of the terminal;
  • the narrowband core network sends a sixth cell handover preparation request to the broadband core network to which the broadband serving cell belongs, the sixth cell handover preparation request carries the number, the SDP and the call identity ID of the current call, so that the broadband core
  • the network instructs the broadband cluster base station to allocate a radio resource to the current call according to the number, and the call context is obtained by the broadband core network querying the current call according to the call ID.
  • the core network device when the core network device is a broadband core network to which the broadband serving cell belongs, the core network device receives the request of the terminal. Allocating radio resources to the broadband serving cell for the current call includes:
  • the broadband core network sends the seventh cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs, the seventh cell handover preparation request includes the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the narrowband a service channel number of the serving cell, so that the narrowband core network to which the narrowband serving cell belongs is sent an eighth cell handover preparation request to the group home narrowband core network, where the eighth cell handover preparation request includes the number, the SDP and the call ID, The call ID is obtained by the narrowband core network to which the narrowband serving cell belongs according to the LAI and the service channel number;
  • a ninth cell handover preparation request sent by the group of home narrowband core networks where the ninth cell handover preparation request includes the number, the SDP and a call context, and the call context is The group belonging to the narrowband core network is obtained according to the call ID query;
  • the broadband core network instructs the broadband cluster base station to allocate radio resources for the current call according to the number, the SDP and the call context.
  • the core network device when the core network device is a narrowband core network to which the narrowband serving cell belongs, the core network device receives the request of the terminal. Allocating radio resources to the broadband serving cell for the current call includes:
  • the narrowband core network to which the narrowband serving cell belongs receives a cell handover request sent by the terminal through the narrowband cluster base station to which the narrowband serving cell belongs, the cell handover request including the number of the terminal and the SDP of the terminal;
  • the narrowband core network to which the narrowband serving cell belongs queries the call ID of the current call
  • the narrowband core network to which the narrowband serving cell belongs sends a tenth cell handover preparation request to the group home narrowband core network, where the tenth cell handover preparation request carries the number of the terminal, the SDP of the terminal, and the call ID, so that the group belongs to
  • the narrowband core network sends an eleventh cell handover preparation request to the broadband core network to which the broadband serving cell belongs, the eleventh cell handover preparation request includes the number, the SDP and the call context, and the call context is determined by the group of narrowband cores
  • the network obtains the query according to the call ID, and the number, the SDP and the call context are used by the broadband core network to instruct the broadband cluster base station to allocate radio resources for the current call.
  • an embodiment of the present invention provides a core network device, where the core network device has a function for implementing a core network device in the foregoing method.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the core network device includes:
  • An allocating module configured to receive, by the terminal, a radio resource allocated to the broadband serving cell for the current call, where the terminal participates in the current call in the narrowband serving cell, where the terminal is registered in the broadband serving cell and the narrowband serving cell;
  • a sending module configured to send the information of the radio resource to the terminal, so that the terminal can switch from the narrowband serving cell to the broadband serving cell to continue the current call according to the information of the radio resource.
  • the core network device includes:
  • Transceiver processor and bus
  • the transceiver is coupled to the processor via the bus;
  • the processor is configured to: execute a request that the receiving terminal allocates a radio resource to the broadband serving cell for the current call, and the terminal participates in the current call in the narrowband serving cell, where the terminal is registered in the broadband serving cell and the narrowband serving cell;
  • the transceiver is configured to: send information about the radio resource acquired by the processing module to the terminal, so that the terminal switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource to continue Current call.
  • the terminal participating in the current call in the narrowband serving cell can obtain the information of the current call radio resource existing in the broadband serving cell, and can switch from the narrowband serving cell to the broadband serving cell according to the information of the radio resource.
  • the radio resource continues the current call.
  • the dual mode terminal can be handed over from the narrowband serving cell to the broadband serving cell, and the call is continuously kept to avoid dropped calls.
  • FIG. 1 is a schematic structural diagram of a network architecture of a gateway interconnection
  • FIG. 2 is a schematic structural diagram of a unified and converged network architecture
  • FIG. 3 is a schematic flowchart of a cell handover method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of another signaling interaction of a cell handover method according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • 15 is another schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of a core network device according to an embodiment of the present invention.
  • FIG. 17 is another schematic structural diagram of a core network device according to an embodiment of the present invention.
  • the embodiment of the invention provides a cell handover method and a terminal, which are used for implementing handover from a broadband cell to a narrowband cell to avoid dropped calls.
  • the cell handover method provided by the embodiment of the present invention can be applied to a network architecture of a gateway interconnection, and can also be applied to a unified and converged network architecture.
  • the terminal mentioned in the embodiment of the present invention is a dual mode terminal supporting both a broadband system and a narrowband system, and the terminal is in a dual standby mode, that is, the terminal is simultaneously registered in the broadband serving cell and the narrowband serving cell and is in the network, and the terminal is passing through the narrowband.
  • the serving cell participates in a call (single call or group call).
  • the cell handover method provided by the embodiment of the present invention enables the terminal to switch from the narrowband serving cell to the broadband target cell, and continues to hold the call to avoid dropped calls.
  • the terminal mentioned in the embodiment of the present invention may be a walkie-talkie or a mobile phone.
  • an embodiment of the present invention provides a cell handover method, including:
  • the terminal participates in a current call in a narrowband serving cell, and the terminal is registered in both the broadband serving cell and the narrowband serving cell.
  • the terminal initiates a current call in the narrowband serving cell, and the terminal is a cluster dual mode terminal. That is, the terminal can make a call in the broadband serving cell, or can make a call in the narrowband serving cell.
  • the terminal acquires information about a radio resource of a current call existing in the broadband serving cell.
  • the terminal can simultaneously monitor the signal quality of the current serving cell (ie, the narrowband serving cell) of the narrowband cluster system (eg, can be measured according to the received signal strength indication RSSI or the error rate BER) and the current serving cell (ie, the broadband serving cell) of the broadband trunking system.
  • the signal quality (for example, can be measured according to the reference signal received power RSRP or the reference signal received quality RSRQ), and determines whether the handover condition is currently met by a preset decision algorithm, for example, when the signal quality of the narrowband serving cell is lower than the first preset threshold, If the signal quality of the broadband serving cell is higher than the second preset threshold, it is considered that the switching condition is met, and the second preset threshold is greater than or equal to the first preset threshold.
  • the terminal When it is determined that the handover condition is met and it is determined that handover is required, the terminal needs to acquire information of the radio resource of the current call existing in the broadband serving cell.
  • the radio resource of the current call existing in the broadband serving cell may be allocated before the handover (for example, the current call is a group call, and the broadband serving cell itself has participated in the current call); or the current call existing in the broadband serving cell
  • the radio resource is allocated in real time during handover (for example, when the broadband service does not participate in the current group call or the current call is a single call, the broadband core network to which the broadband serving cell belongs receives the broadband cluster corresponding to the broadband serving cell after receiving the request from the terminal.
  • the base station allocates radio resources to the current call in real time in the broadband serving cell.
  • the information about the radio resource of the current call that exists in the broadband serving cell may include the radio resource control (English name: Radio Resource Control, RRC for short) configuration parameter (including the radio link control layer protocol (English full name: Radio Link Control, referred to as: RLC) parameters, media access control (English full name: Media Access Control, MAC: parameters) and physical layer parameters), UE measurement information.
  • RRC Radio Resource Control
  • configuration parameter including the radio link control layer protocol (English full name: Radio Link Control, referred to as: RLC) parameters, media access control (English full name: Media Access Control, MAC: parameters) and physical layer parameters
  • RLC Radio Link Control layer protocol
  • media access control English full name: Media Access Control, MAC: parameters
  • UE measurement information UE measurement information.
  • the terminal switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and continues the current call by using the radio resource.
  • the terminal After acquiring the information of the radio resource, the terminal will switch from the narrowband serving cell to the broadband serving cell.
  • step 302 if the radio resource of the current call existing in the broadband serving cell is allocated before the handover, and the broadband serving cell has participated in the current
  • the method of obtaining the information of the radio resource by the terminal is as follows: the terminal directly obtains the information of the radio resource by using the message broadcast by the air interface of the broadband serving cell.
  • FIG. 4 to 9 correspond to the network structure of the gateway interconnection
  • FIG. 10 to FIG. 13 correspond to the unified and integrated network architecture.
  • the radio resource is allocated to the current call in real time by the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the broadband core to which the broadband serving cell belongs.
  • the current call is a group call, and the group belongs to the narrowband core network.
  • the terminal is currently in a narrowband serving cell.
  • the terminal initiates a handover request by the narrowband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal initiates a cell handover request P_HANDOVER to the narrowband core network by using the narrowband cluster base station, where the P_HANDOVER carries the user number of the terminal and related parameters of the session description protocol SDP.
  • the narrowband core network to which the narrowband serving cell belongs queries the call identity ID of the current call according to the service channel where the terminal is located, and sends a cell handover preparation request to the group home narrowband core network, and the group belongs to the narrowband core network according to the call ID.
  • the call context of the current call such as calling number 15708971878, called group number 18908157150, call type, call attribute, etc.
  • the group-owned narrowband core network sends a cell handover preparation request PSIP PREPARE to the broadband core network through the gateway, the PSIP PREPARE carries the number, the SDP and the call context (the calling number, the called group number, the call type, the call attribute) Information)
  • the gateway converts the PSIP PREPARE into SIP (REFER) signaling to the broadband core network, the SIP (REFER) signaling carries the SDP, the number and the call context (the calling number, the called group number, Call type, call attribute, etc.);
  • the broadband core network will indicate that the broadband trunking base station controlled by the broadband core network, according to the number, the SDP and the call context allocate radio resources for the current call;
  • the broadband core network sends a feedback message SIP 200 OK signaling to the gateway;
  • the gateway converts the SIP 200 OK signaling into a feedback message, the PSIP 200 OK signaling is sent to the group of the home narrowband core network, and the group of the home narrowband core network sends the PSIP 200 OK signaling to the narrowband core network to which the narrowband serving cell belongs. ;
  • the terminal receives the Group Call Config message broadcasted by the broadband cluster base station (the message carries the NAS message GROUP C SETUP INDICATION sent by the broadband core network), and obtains information about the radio resource allocated by the broadband cluster base station to the current call;
  • the terminal switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and uses the radio resource to send and receive data to continue the current call.
  • the radio resource is allocated by the broadband cluster base station corresponding to the broadband serving cell in real time for the current call, and the broadband cluster base station is controlled by the broadband core network to which the broadband serving cell belongs.
  • the current call is a group call, and the group belongs to the broadband core network; the terminal is currently in a narrowband serving cell, and wants to switch to the broadband serving cell to continue the current call, and the terminal initiates a handover request by the narrowband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal initiates a cell handover request P_HANDOVER to the narrowband core network by using the narrowband cluster base station, where the P_HANDOVER carries the user number of the terminal and related parameters of the session description protocol SDP.
  • the narrowband core network queries the call identity ID of the current call according to the service channel where the terminal is located;
  • the narrowband core network sends a cell handover preparation request PSIP PREPARE to the broadband core network through the gateway, the PSIP PREPARE carrying the call ID, the number of the terminal and the SDP of the terminal;
  • the gateway converts the PSIP PREPARE into SIP (REFER) signaling to the broadband core network, the SIP (REFER) signaling carries the call ID, the number of the terminal and the SDP of the terminal;
  • the broadband core network queries the call context of the current call according to the call ID;
  • the broadband core network will indicate that the broadband trunking base station controlled by the broadband core network, according to the number, the SDP and the call context allocate radio resources for the current call;
  • the broadband core network feeds back SIP 200 OK signaling to the gateway;
  • the gateway converts the SIP 200 OK signaling into PSIP 200 OK signaling and sends the signal to the narrowband core network
  • the terminal receives the Group Call Config message broadcasted by the broadband cluster base station (the message carries the NAS message GROUP C SETUP INDICATION sent by the broadband core network), and obtains information about the radio resource allocated by the broadband cluster base station to the current call;
  • the terminal switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and uses the radio resource to send and receive data to continue the current call.
  • the radio resource is allocated to the current call in real time for the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the broadband core network to which the broadband serving cell belongs.
  • the current call is a group call, and the group belongs to the broadband core network; the terminal is currently in a narrowband serving cell, and wants to switch to the broadband serving cell to continue the current call, and the terminal initiates a handover request by the broadband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal broadcasts a cell handover request TRUNKING HANDOVER REQUEST to the broadband core network, and carries the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the service channel of the narrowband serving cell. number;
  • the broadband core network sends a cell handover preparation request SIP REFER to the narrowband core network through a gateway, where the SIP REFER carries the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the service channel number of the narrowband serving cell;
  • the gateway converts the SIP REFER into PSIP PREPARE signaling to the narrowband core network, where the signaling carries the number of the terminal, the SDP parameter of the terminal, the LAI of the narrowband serving cell, and the service channel number of the narrowband serving cell. ;
  • the narrowband core network queries the call ID of the current call according to the LAI of the narrowband serving cell and the service channel number of the narrowband serving cell;
  • the narrowband core network sends a cell handover preparation request PSIP PREPARE to the broadband core network through the gateway, where the PSIP PREPARE carries the number of the terminal, the SDP of the terminal, and the call ID;
  • the broadband core network queries the context of the current call (the calling number, the called group number, the call type, the call attribute, and the like) according to the call ID;
  • the broadband core network will indicate that the broadband trunking base station controlled by the broadband core network, according to the number, the SDP and the call context allocate radio resources for the current call;
  • the terminal receives the Group Call Config message broadcasted by the broadband cluster base station (the message carries the NAS message GROUP C SETUP INDICATION sent by the broadband core network), and obtains information about the radio resource allocated by the broadband cluster base station to the current call;
  • the terminal switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and uses the radio resource to send and receive data to continue the current call.
  • the radio resource is allocated to the current call in real time by the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the broadband core network to which the broadband serving cell belongs.
  • the current call is a group call, and the group belongs to the narrowband core network; the terminal is currently in a narrowband serving cell, and the terminal is to be switched to the broadband serving cell to continue the current call, and the terminal initiates a handover request by the broadband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal broadcasts a TRUNKING HANDOVER REQUEST to the broadband core network through the broadband cluster base station, carrying the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the service channel number of the narrowband serving cell;
  • the broadband core network sends a cell handover preparation request SIP REFER to the narrowband core network to which the narrowband serving cell belongs, the SIP REFER carrying the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the narrowband serving cell Traffic channel number;
  • the gateway converts the SIP REFER into PSIP PREPARE signaling to the narrowband core network to which the narrowband serving cell belongs, the signaling carries the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the narrowband service The traffic channel number of the cell;
  • the narrowband core network to which the narrowband serving cell belongs is queried according to the LAI of the narrowband serving cell and the service channel number of the narrowband serving cell, and the call ID is sent to the group of the narrowband core network;
  • the group-owned narrowband core network queries the context of the current call (the calling number, the called group number, the call type, the call attribute, and the like) according to the call ID;
  • the group-owned narrowband core network sends a cell handover preparation request PSIP PREPARE to the broadband core network through a gateway, where the PSIP PREPARE carries the number of the terminal, the SDP of the terminal, and the call context (the calling number, the called group number, Call type, call attribute, etc.);
  • the gateway converts the PSIP PREPARE into SIP (REFER) signaling to the broadband core network, the SIP (REFER) signaling carries the number of the terminal, the SDP of the terminal, and the call context (the calling number is Call group number, call type, call attribute and other information);
  • the broadband core network will indicate that the broadband trunking base station controlled by the broadband core network allocates radio resources for the current call according to the number of the terminal, the SDP of the terminal and the call context;
  • the broadband core network feeds back SIP 200 OK signaling to the gateway;
  • the gateway converts the SIP 200 OK signaling into a PSIP 200 OK signaling and sends the packet to the group.
  • the group belongs to the narrowband core network, and sends the PSIP 200 OK signaling to the narrowband core network to which the narrowband serving cell belongs;
  • the terminal receives the Group Call Config message broadcasted by the broadband cluster base station (the message carries the NAS message GROUP C SETUP INDICATION sent by the broadband core network), and obtains information about the radio resource allocated by the broadband cluster base station to the current call;
  • the terminal switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and uses the radio resource to send and receive data to continue the current call.
  • the radio resource is allocated to the current call in real time for the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the broadband core network to which the broadband serving cell belongs.
  • the current call is a single call; the terminal is currently in a narrowband serving cell, and wants to switch to the broadband serving cell to continue the current call, and the terminal initiates a handover request by the broadband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal broadcasts a TRUNKING HANDOVER REQUEST to the broadband core network through the broadband cluster base station, carrying the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the service channel number of the narrowband serving cell;
  • the broadband core network sends a cell handover preparation request SIP REFER to the narrowband core network through a gateway, where the SIP REFER carries the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the service channel number of the narrowband serving cell;
  • the gateway converts the SIP REFER into PSIP PREPARE signaling to the narrowband core network, where the signaling carries the number of the terminal, the SDP of the terminal, the LAI of the narrowband serving cell, and the service channel number of the narrowband serving cell;
  • the narrowband core network queries the context of the current call (the calling number, the called group number, the call type, the call attribute, and the like) according to the LAI of the narrowband serving cell and the service channel number of the narrowband serving cell;
  • the narrowband core network sends a cell handover preparation request PSIP PREPARE to the broadband core network through the gateway, the PSIP PREPARE carries the number of the terminal, the SDP of the terminal and the call context (the calling number, the called group number, the call type, Call properties and other information);
  • the gateway converts the PSIP PREPARE into SIP (REFER) signaling to the broadband core network, where the SIP (REFER) signaling carries the number of the terminal, the SDP of the terminal, and the call context. (the calling number, the called group number, the call type, the call attribute, etc.);
  • the broadband core network will indicate that the broadband trunking base station controlled by the broadband core network allocates radio resources for the current call according to the number of the terminal, the SDP of the terminal and the call context;
  • the terminal sends an RRC connection reconfiguration complete message RRC Connection Reconfig Complete to the broadband cluster base station, and switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and uses the radio resource to send and receive data to continue the current call;
  • the broadband core network feeds back the SIP 200 OK signaling to the gateway to indicate that the handover is completed;
  • the gateway converts the SIP 200 OK signaling into PSIP 200 OK signaling and sends the signal to the narrowband core network.
  • the radio resource is allocated to the current call in real time by the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the broadband core network to which the broadband serving cell belongs.
  • the current call is a single call; the terminal is currently in a narrowband serving cell, and wants to switch to the broadband serving cell to continue the current call, and the terminal initiates a handover request by the narrowband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal initiates a cell handover request P_HANDOVER to the narrowband core network by using the narrowband cluster base station, where the P_HANDOVER carries the user number of the terminal and related parameters of the session description protocol SDP.
  • the narrowband core network queries the call context of the current call (such as calling number 15708971878, called group number 18908157150, call type, call attribute, etc.);
  • the narrowband core network sends a cell handover preparation request PSIP PREPARE to the broadband core network through the gateway, the PSIP PREPARE carries the number of the terminal, the SDP of the terminal and the call context (the calling number, the called group number, the call type, Call properties and other information);
  • the gateway converts the PSIP PREPARE into SIP (REFER) signaling to the broadband core network, the SIP (REFER) signaling carries the number of the terminal, the SDP of the terminal, and the call context (the calling number is Call group number, call type, call attribute and other information);
  • the broadband core network will indicate that the broadband trunking base station controlled by the broadband core network allocates radio resources for the current call according to the number of the terminal, the SDP of the terminal and the call context;
  • RRC connection reconfiguration complete message RRC Connection Reconfig Complete and switch from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and use the radio resource to send and receive data to continue the current call;
  • the broadband core network feeds back the SIP 200 OK signaling to the gateway to indicate that the handover is completed;
  • the gateway converts the SIP 200 OK signaling into PSIP 200 OK signaling and sends the signal to the narrowband core network.
  • the radio resource is allocated to the current call in real time by the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the unified converged core network; the current call.
  • the terminal is currently in the narrowband serving cell, and wants to switch to the broadband serving cell to continue the current call, and the terminal initiates the handover request by the narrowband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal initiates a cell handover request P_HANDOVER to the unified converged core network by using the narrowband cluster base station, where the P_HANDOVER carries the user number of the terminal and related parameters of the session description protocol SDP.
  • the unified converged core network queries the call context of the current call according to the service channel where the terminal is located;
  • the unified converged core network indicates that the broadband cluster base station controlled by the unified converged core network allocates radio resources for the current call according to the number of the terminal, the SDP of the terminal and the call context;
  • the terminal receives the Group Call Config message broadcasted by the broadband cluster base station (the message carries the NAS message GROUP C SETUP INDICATION sent by the broadband core network), and obtains information about the radio resource allocated by the broadband cluster base station to the current call;
  • the terminal switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and uses the radio resource to send and receive data to continue the current call.
  • the radio resource is allocated to the current call in real time for the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the unified converged core network; the current call For the group call; the terminal is currently in the narrowband serving cell, and wants to switch to the broadband serving cell to continue the current call, and the terminal initiates the handover request by the broadband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover needs to be performed, the terminal is widely distributed to the unified converged core network through the broadband cluster base station. Broadcasting a TRUNKING HANDOVER REQUEST, carrying the number of the terminal, the SDP parameter of the terminal, the LAI of the narrowband serving cell, and the service channel number of the narrowband serving cell;
  • the unified converged core network queries the context of the current call (the calling number, the called group number, the call type, the call attribute, and the like) according to the LAI and the service channel number of the service channel of the terminal;
  • the unified converged core network indicates that the broadband cluster base station controlled by the unified converged core network allocates radio resources for the current call according to the terminal number, the SDP parameter of the terminal, and the call context;
  • the terminal receives the Group Call Config message broadcasted by the broadband cluster base station (the message carries the NAS message GROUP C SETUP INDICATION sent by the broadband core network), and obtains information about the radio resource allocated by the broadband cluster base station to the current call;
  • the terminal switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and uses the radio resource to send and receive data to continue the current call.
  • the radio resource is allocated to the current call in real time by the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the unified converged core network;
  • the current call A single call;
  • the terminal is currently in a narrowband serving cell, and wants to switch to the broadband serving cell to continue the current call, and the terminal initiates a handover request by the narrowband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal initiates a cell handover request P_HANDOVER to the unified converged core network by using the narrowband cluster base station, where the P_HANDOVER carries the user number of the terminal and related parameters of the session description protocol SDP.
  • the unified converged core network queries the call context of the current call according to the service channel where the terminal is located (such as calling number 15708971878, called group number 18908157150, call type, call attribute, etc.);
  • the unified converged core network indicates that the broadband cluster base station controlled by the unified converged core network allocates radio resources for the current call according to the terminal number, the SDP parameter of the terminal, and the call context;
  • the terminal sends an RRC connection reconfiguration complete message RRC Connection Reconfig Complete to the broadband cluster base station, and switches from the narrowband serving cell to the broadband according to the information of the radio resource. Serving the cell and using the wireless resource to send and receive data to continue the current call.
  • the radio resource is allocated to the current call in real time by the broadband cluster base station corresponding to the broadband serving cell, and the broadband cluster base station is controlled by the unified converged core network;
  • the current call For a single call;
  • the terminal is currently in a narrowband serving cell, and wants to switch to the broadband serving cell to continue the current call, and the terminal initiates a handover request by the broadband serving cell, and the specific method includes:
  • the terminal After determining that the cell handover is required, the terminal broadcasts a TRUNKING HANDOVER REQUEST to the unified converged core network through the broadband cluster base station, carries the number of the terminal, the SDP parameter of the terminal, the LAI of the narrowband serving cell, and the service channel number of the narrowband serving cell. ;
  • the unified converged core network queries the context of the current call (the calling number, the called group number, the call type, the call attribute, and the like) according to the LAI and the service channel number;
  • the unified converged core network indicates that the broadband cluster base station controlled by the unified converged core network allocates radio resources for the current call according to the terminal number, the SDP parameter of the terminal, and the call context;
  • the terminal sends an RRC connection reconfiguration complete message RRC Connection Reconfig Complete to the broadband cluster base station, and switches from the narrowband serving cell to the broadband serving cell according to the information of the radio resource, and uses the radio resource to send and receive data to continue the current call.
  • the terminal that participates in the current call in the narrowband serving cell can obtain the information of the current call radio resource existing in the broadband serving cell, and can switch from the narrowband serving cell to the broadband serving cell according to the information of the radio resource.
  • the radio resource continues the current call.
  • the dual mode terminal can be handed over from the narrowband serving cell to the broadband serving cell, and the call is continuously kept to avoid dropped calls.
  • the terminal 1400 provided in this embodiment includes:
  • the calling module 1401 is configured to participate in a current call in a narrowband serving cell, where the terminal is registered in the broadband serving cell and the narrowband serving cell;
  • An obtaining module 1402 configured to acquire information about a radio resource of the current call that is involved by the calling module in the broadband serving cell;
  • the processing module 1403 is configured to obtain, according to the obtained module, information about the wireless resource from the The narrowband serving cell switches to the broadband serving cell and continues the current call with the wireless resource.
  • the obtaining module 1402 includes:
  • a requesting unit configured to request the core network device to allocate a radio resource to the broadband serving cell for the current call
  • the first acquiring unit is configured to receive information about the radio resource sent by the broadband cluster base station corresponding to the broadband serving cell.
  • the obtaining module 1402 further includes:
  • a first determining unit configured to determine whether the current call is a group call, and if yes, the terminal receives broadcast information sent by the broadband serving cell;
  • the second determining unit is configured to determine, according to the broadcast information of the first determining unit, whether the terminal participates in the group call, and if not, trigger a request for the core network device to allocate radio resources in the broadband serving cell for the current call.
  • the request unit includes:
  • a first processing subunit configured to send, by the broadband cluster base station, a cell handover request to the broadband core network, where the cell handover request includes a number of the terminal, an SDP of the terminal, an LAI of the narrowband serving cell, and a location of the narrowband serving cell a traffic channel number, such that the broadband core network sends a third cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs, the third cell handover preparation request including the number, the SDP, the LAI, and the service channel number, And instructing the broadband cluster base station to allocate a radio resource to the current call according to the number, the SDP and the call context are obtained by the broadband core network according to the call identity ID sent by the narrowband core network, and the call ID is obtained by The narrowband core network is obtained based on the LAI and the traffic channel number query.
  • the request unit includes:
  • a second processing subunit configured to send, by using the narrowband trunking base station corresponding to the narrowband serving cell, a cell handover request to the narrowband core network to which the narrowband serving cell belongs, where the cell handover request carries the number of the terminal and the SDP of the terminal, so that
  • the narrowband core network sends a fourth cell handover preparation request to the broadband core network, where the fourth cell handover preparation request carries the number, the SDP and the call identity ID of the current call, and the call ID is used for the broadband core network query.
  • the call context of the current call, the number, the SDP and the call context for the broadband core network instructing the broadband cluster base station to allocate radio resources for the current call.
  • the request unit includes:
  • a third processing subunit configured to send a cell handover request to the broadband core network to which the broadband serving cell belongs by using the broadband cluster base station corresponding to the broadband serving cell, so that the broadband core network sends the narrowband core network to the narrowband core network to which the narrowband serving cell belongs a fifth cell handover preparation request, where the fifth cell handover preparation request includes a number of the terminal, an SDP of the terminal, an LAI of the narrowband serving cell, and a service channel number of the narrowband serving cell, and indicates that the broadband cluster base station includes the a number, the SDP and the call context allocate a radio resource for the current call, the call context is queried by the group-owned narrowband core network according to the call ID and sent to the broadband core network, and the call ID is a narrowband core network to which the narrowband serving cell belongs And querying and transmitting to the group of the home narrowband core network according to the LAI and the service channel number.
  • the request unit includes:
  • a fourth processing subunit configured to send, by the narrowband trunking base station to which the narrowband serving cell belongs, a cell handover request to a narrowband core network to which the narrowband serving cell belongs, where the cell handover request includes a number of the terminal and an SDP of the terminal, so that
  • the narrowband core network to which the narrowband serving cell belongs queries the call ID of the current call and sends the call ID to the group home narrowband core network, and the call ID is used by the group narrowband core network to query the call context of the current call, the number, the SDP and The call context is used by the broadband core network to instruct the broadband cluster base station to allocate radio resources for the current call;
  • the request unit includes:
  • a first determining subunit configured to determine whether the current call is a single call
  • a fifth processing subunit configured to send, by the broadband cluster base station corresponding to the broadband serving cell, a cell handover request to the broadband core network to which the broadband serving cell belongs, so that the broadband core network sends the
  • the narrowband core network to which the narrowband serving cell belongs sends a first cell handover preparation request
  • the first cell handover preparation request includes a number of the terminal, a session description protocol SDP of the terminal, a wireless location identification number LAI of the narrowband serving cell, and the narrowband a traffic channel number of the serving cell, and instructing the broadband cluster base station to allocate a radio resource to the current call according to the number, the call context is queried by the narrowband core network according to the LAI and the service channel number, and sent to the The broadband core network.
  • the request unit includes:
  • a second determining subunit configured to determine whether the current call is a single call
  • a sixth processing subunit configured to: if the current call is a single call, pass the narrowband serving cell
  • the narrowband cluster base station sends a cell handover request to the narrowband core network to which the narrowband serving cell belongs, so that the narrowband core network sends a second cell handover preparation request to the broadband core network, where the second cell handover preparation request carries the number
  • the SDP and the call context of the current call, the call context information is obtained by the narrowband core network, the number, the SDP and the call context for the broadband core network instructing the broadband cluster base station to allocate radio resources for the current call.
  • the request unit includes:
  • a seventh processing subunit configured to send a cell handover request to the unified converged core network by using a broadband cluster base station corresponding to the broadband serving cell, where the cell handover request includes a number of the terminal, an SDP of the terminal, and a LAI of the narrowband serving cell And the service channel number, so that the unified converged core network queries the call context of the current call according to the LAI and the service channel number, and instructs the broadband cluster base station to allocate the current call according to the number, the SDP and the call context.
  • Wireless resources configured to send a cell handover request to the unified converged core network by using a broadband cluster base station corresponding to the broadband serving cell, where the cell handover request includes a number of the terminal, an SDP of the terminal, and a LAI of the narrowband serving cell And the service channel number, so that the unified converged core network queries the call context of the current call according to the LAI and the service channel number, and instructs the broadband cluster base station to allocate the current call according to the
  • the request unit includes:
  • An eighth processing subunit configured to send a cell handover request to the unified converged core network by using a narrowband trunking base station corresponding to the narrowband serving cell, where the cell handover request includes a number of the terminal, and an SDP of the terminal, so that the unified fusion core
  • the network queries the call context of the current call and instructs the broadband cluster base station to allocate radio resources for the current call according to the number, the SDP and the call context.
  • the obtaining module 1402 further includes:
  • a third determining unit configured to determine whether the current call is a group call, and if yes, the terminal receives broadcast information sent by the broadband serving cell;
  • the fourth determining unit is configured to determine, according to the broadcast information, whether the terminal participates in the group call, and if yes, receive information about the radio resource of the group call sent by the broadband cluster base station corresponding to the broadband serving cell.
  • the obtaining module 1402 may obtain information about the current radio resource of the current call in the broadband serving cell, and the processing module 1403 may serve from the narrowband according to the information of the wireless resource.
  • the cell switches to the broadband serving cell and the radio resource continues the current call.
  • the terminal 1500 of this embodiment includes:
  • the transceiver 1501, the processor 1502 is connected through the bus 1503;
  • the transceiver 1501 is configured to execute the following instructions:
  • the terminal Participating in the current call in the narrowband serving cell, the terminal is registered in both the broadband serving cell and the narrowband serving cell; acquiring information about the radio resource of the current call that the calling module participates in the broadband serving cell;
  • the processor 1502 is configured to execute the following instructions:
  • the information about the radio resource obtained by the acquiring module is switched from the narrowband serving cell to the broadband serving cell, and the current call is continued by using the radio resource.
  • the terminal 1500 in this embodiment may further include a memory 1504 for storing a software program and cache data, and the transceiver 1501 and the memory 1504 are communicably connected to the processor 1502 via the bus 1503.
  • the terminal 1500 of this embodiment may further perform other steps of the foregoing method embodiments, and details are not described herein again.
  • the processor 1502 may obtain information about the radio resource of the current call existing in the broadband serving cell, and the processor 1502 may obtain the narrowband from the information according to the radio resource.
  • the serving cell switches to the broadband serving cell and the radio resource continues the current call.
  • the following describes the core network device provided by the embodiment of the present invention. For details, refer to the core network device 1600 provided in this embodiment.
  • the allocating module 1601 is configured to receive, by the terminal, a radio resource allocated to the broadband serving cell for the current call, where the terminal participates in the current call in the narrowband serving cell, and the terminal is registered in the broadband serving cell and the narrowband serving cell;
  • the sending module 1602 is configured to send information about the radio resource to the terminal, so that the terminal switches from the narrowband serving cell to the broadband serving cell to continue the current call according to the information of the radio resource.
  • the allocating module 1601 includes:
  • a first receiving unit configured to receive a cell handover sent by the terminal through the broadband cluster base station begging;
  • a first sending unit configured to send a first cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs, where the first cell handover preparation request includes a number of the terminal, a session description protocol SDP of the terminal, and the narrowband serving cell a wireless location identifier number LAI and a traffic channel number of the narrowband serving cell, such that the narrowband core network queries the call context of the current call according to the LAI and the traffic channel number;
  • a second receiving unit configured to receive a second cell handover preparation request sent by the narrowband core network, where the second cell handover preparation request carries the number, the SDP and the call context;
  • a first allocation unit configured to indicate, by the broadband cluster base station, the SDP and the call context to allocate a radio resource to the current call according to the number.
  • the allocating module 1601 includes:
  • a third receiving unit configured to receive a cell handover request sent by the terminal by the narrowband cluster base station corresponding to the narrowband serving cell
  • a second sending unit configured to send a third cell handover preparation request to the broadband core network, where the third cell handover preparation request carries a number of the terminal, an SDP of the terminal, and a call context of the current call, where the call context information is
  • the narrowband core network query is obtained such that the broadband core network instructs the broadband cluster base station to allocate radio resources for the current call according to the number, the SDP and the call context.
  • the allocating module 1601 includes:
  • a fourth receiving unit configured to receive a cell handover request sent by the terminal by the broadband cluster base station corresponding to the broadband serving cell, where the cell handover request includes a number of the terminal, an SDP of the terminal, an LAI of the narrowband serving cell, and the narrowband The service channel number of the serving cell;
  • a first querying unit configured to query a call context of the current call according to the LAI and the service channel number
  • a second allocation unit configured to indicate, by the broadband cluster base station, the SDP and the call context to allocate a radio resource to the current call according to the number.
  • the allocating module 1601 includes:
  • a fifth receiving unit configured to receive, by the terminal, a narrowband cluster base station corresponding to the narrowband serving cell a cell handover request sent, the cell handover request including a number of the terminal, an SDP of the terminal;
  • a second query unit configured to query a call context of the current call
  • a third allocation unit configured to indicate, by the broadband cluster base station, the SDP and the call context to allocate a radio resource to the current call according to the number.
  • the allocating module 1601 includes:
  • a sixth receiving unit configured to receive a cell handover request sent by the terminal by the broadband cluster base station, where the cell handover request includes a number of the terminal, an SDP of the terminal, an LAI of the narrowband serving cell, and a service channel of the narrowband serving cell number;
  • a third sending unit configured to send a fourth cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs, where the fourth cell handover preparation request includes the number, the SDP, the LAI, and the service channel number, so that the The narrowband core network queries the call identity ID of the current call according to the LAI and the service channel number;
  • a seventh receiving unit configured to receive a fifth cell handover preparation request sent by the narrowband core network, where the fifth cell handover preparation request carries the number, the SDP and the call ID;
  • a third query unit configured to query a call context of the current call according to the call ID
  • a fourth allocation unit configured to indicate, by the broadband cluster base station, the SDP and the call context to allocate a radio resource to the current call according to the number.
  • the allocating module 1601 includes:
  • the eighth receiving unit is configured to receive a cell handover request sent by the terminal by the narrowband cluster base station corresponding to the narrowband serving cell, where the cell handover request carries the number of the terminal and the SDP of the terminal;
  • a fourth sending unit configured to send a sixth cell handover preparation request to the broadband core network to which the broadband serving cell belongs, where the sixth cell handover preparation request carries the number, the SDP, and the call identity ID of the current call, so that
  • the broadband core network instructs the broadband cluster base station to allocate a radio resource for the current call according to the number, and the call context is obtained by the broadband core network querying the current call according to the call ID.
  • the allocating module 1601 includes:
  • a ninth receiving unit configured to receive a cell handover request sent by the terminal by the broadband cluster base station corresponding to the broadband serving cell
  • a fifth sending unit configured to send the seventh cell handover preparation request to the narrowband core network to which the narrowband serving cell belongs, where the seventh cell handover preparation request includes a number of the terminal, an SDP of the terminal, and a LAI of the narrowband serving cell And a traffic channel number of the narrowband serving cell, so that the narrowband core network to which the narrowband serving cell belongs sends an eighth cell handover preparation request to the group home narrowband core network, where the eighth cell handover preparation request includes the number, the SDP and the call ID, the call ID is obtained by the narrowband core network to which the narrowband serving cell belongs, according to the LAI and the service channel number query;
  • a tenth receiving unit configured to receive a ninth cell handover preparation request sent by the group of home narrowband core networks, where the ninth cell handover preparation request includes the number, the SDP and a call context, and the call context is used by the group of narrowband core networks According to the call ID query;
  • a fifth allocation unit configured to indicate, by the broadband cluster base station, the SDP and the call context to allocate radio resources to the current call according to the number.
  • the allocating module 1601 allocates radio resources to the terminal in the broadband serving cell, and the sending module 1602 sends the information of the radio resource to the dual mode terminal, so that the pair
  • the modulo terminal may switch from the narrowband serving cell to the broadband serving cell according to the information of the radio resource and use the radio resource to make a call.
  • the dual mode terminal can be switched from the narrowband serving cell to the broadband serving cell, and the call is continuously kept to avoid dropped calls.
  • the core network device 1700 of this embodiment includes:
  • Transceiver 1701 processor 1702 and bus 1703;
  • the transceiver 1701, the processor 1702 is connected through the bus 1703;
  • the processor 1702 is configured to execute the following instructions:
  • the receiving terminal requests the radio resource to be allocated in the broadband serving cell for the current call, and the terminal participates in the current call in the narrowband serving cell, and the terminal registers in both the broadband serving cell and the narrowband serving cell;
  • the transceiver 1701 is configured to execute the following instructions:
  • the core network device 1700 in this embodiment may further include a memory 1704 for storing software programs and cache data, and the transceiver 1701 and the memory 1704 are communicatively coupled to the processor 1702 via the bus 1703.
  • the core network device 1700 of this embodiment may also perform other steps of the foregoing method embodiments, and details are not described herein again.
  • the processor 1702 after receiving the request sent by the dual mode terminal, allocates a radio resource to the terminal in the broadband serving cell, and the transceiver 1701 sends the information of the radio resource to the dual mode terminal, so that the pair The modulo terminal may switch from the narrowband serving cell to the broadband serving cell according to the information of the radio resource and use the radio resource to make a call.
  • the dual mode terminal can be switched from the narrowband serving cell to the broadband serving cell, and the call is continuously kept to avoid dropped calls.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold as a standalone product Or when used, it can be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明实施例公开了一种小区切换方法及终端，用于实现从窄带小区往宽带小区的切换，避免掉话。本发明实施例方法包括：终端在窄带服务小区参与当前呼叫，该终端在宽带服务小区及该窄带服务小区均有注册；该终端获取该宽带服务小区中的该当前呼叫的无线资源的信息；该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区并利用该无线资源继续该当前呼叫。

Description

一种小区切换方法，终端以及核心网设备 技术领域
本发明实施例涉及通信技术领域，尤其涉及一种小区切换方法，终端以及核心网设备。
背景技术
在专业集群通信领域，警用数字集群(Police Digital Trunking，PDT)系统、陆上集群无线电(Terrestrial Trunked Radio，Tetra)系统和P25(Project25)是几种主流的系统，它们都属于窄带集群系统。PDT、Tetra和P25等窄带集群通信系统能为用户提供良好的窄带语音业务，但在数据业务方面存在传输速率低的缺点，无法满足图像和数据等日益增长的宽带业务的需要，为解决这一问题，业界普遍看好窄带系统加宽带系统的宽窄带集群融合方式，宽带系统例如长期演进(Long Term Evolution，LTE)系统，宽窄带集群融合方式例如：PDT+LTE、Tetra+LTE、P25+LTE等。
在融合的初期阶段，核心网分别建设并通过网关互联，网关互联的网络架构可如图1所示，之后核心网会逐步过渡到统一融合阶段，统一融合的网络架构可如图2所示。宽窄带集群系统支持的终端类型包括窄带终端、宽带终端、以及双模终端。
现有的宽带集群和窄带集群标准均支持切换功能：对于宽带集群终端，可采用宽带标准定义的切换方案(例如：LTE切换)；对于窄带集群终端，可采用窄带集群标准定义的切换方案(例如：PDT越区切换)；对于双模终端，从宽带小区往宽带小区切换，可采用宽带切换方案，从窄带小区往窄带小区切换，可采用窄带切换方案。而从窄带小区往宽带小区切换，现有标准和技术规范未涉及。
发明内容
有鉴于此，本发明实施例提供了一种小区切换方法及终端，能够实现从宽带小区往窄带小区的切换，避免掉话。
第一方面，本发明实施例提供一种小区切换方法，包括：终端在窄带服务小区参与当前呼叫，该终端在宽带服务小区及该窄带服务小区均有注册；该终 端获取该宽带服务小区中的该当前呼叫的无线资源的信息；该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区并利用该无线资源继续该当前呼叫。
结合本发明实施例的第一方面，在本发明实施例的第一方面的第一种实现方式中，该终端获取该宽带服务小区中存在的该当前呼叫的无线资源的信息具体为：该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源；该终端接收该宽带服务小区对应的宽带集群基站发送的该无线资源的信息。
结合本发明实施例的第一方面的第一种实现方式，在本发明实施例的第一方面的第二种实现方式中，终端在窄带服务小区参与当前呼叫之后，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源之前，该方法还包括：
该终端判断该当前呼叫是否为组呼，若是，则该终端接收该宽带服务小区发送的广播信息；
该终端根据该广播信息判断该终端是否参与该组呼，若否，则触发该终端请求该核心网设备为该当前呼叫在该宽带服务小区分配无线资源。
结合本发明实施例的第一方面的第一种实现方式或第二种实现方式，在本发明实施例的第一方面的第三种实现方式中，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源包括：
该终端通过该宽带集群基站向该宽带核心网发送小区切换请求，该小区切换请求包括该终端的号码，该终端的会话描述协议(英文全称：Session Description Protocol，简称：SDP)，该窄带服务小区的无线位置识别号(英文全称：Location Area Identity，简称：LAI)以及该窄带服务小区的业务信道号，以使得该宽带核心网向该窄带服务小区归属的窄带核心网发送第三小区切换准备请求，该第三小区切换准备请求包括该号码，该SDP，该LAI以及该业务信道号，并指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源，该呼叫上下文由该宽带核心网根据该窄带核心网发送的呼叫身份标识(英文全称：Identity，简称：ID)查询得到，该呼叫ID由该窄带核心网根据该LAI以及该业务信道号查询得到。
结合本发明实施例的第一方面的第一种实现方式或第二种实现方式，在本 发明实施例的第一方面的第四种实现方式中，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源包括：
该终端通过该窄带服务小区对应的窄带集群基站向该窄带服务小区归属的窄带核心网发送小区切换请求，该小区切换请求携带该终端的号码和该终端的SDP，以使得该窄带核心网向该宽带核心网发送第四小区切换准备请求，该第四小区切换准备请求携带该号码，该SDP和该当前呼叫的呼叫ID，该呼叫ID用于该宽带核心网查询该当前呼叫的呼叫上下文，该号码，该SDP和该呼叫上下文用于该宽带核心网指示该宽带集群基站为该当前呼叫分配无线资源。
结合本发明实施例的第一方面的第一种实现方式或第二种实现方式，在本发明实施例的第一方面的第五种实现方式中，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源包括：
该终端通过该宽带服务小区对应的宽带集群基站向该宽带服务小区归属的宽带核心网发送小区切换请求，以使得该宽带核心网向该窄带服务小区归属的窄带核心网发送第五小区切换准备请求，该第五小区切换准备请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号，并指示该宽带集群基站根据包括该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源，该呼叫上下文由组归属窄带核心网根据呼叫ID查询并发送给该宽带核心网，该呼叫ID由该窄带服务小区归属的窄带核心网根据该LAI以及该业务信道号查询并发送给该组归属窄带核心网。
结合本发明实施例的第一方面的第一种实现方式或第二种实现方式，在本发明实施例的第一方面的第六种实现方式中，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源包括：
该终端通过该窄带服务小区归属的窄带集群基站向该窄带服务小区归属的窄带核心网发送小区切换请求，该小区切换请求包括该终端的号码和该终端的SDP，以使得该窄带服务小区归属的窄带核心网查询该当前呼叫的呼叫ID并发送给组归属窄带核心网，该呼叫ID用于该组归属窄带核心网查询该当前呼叫的呼叫上下文，该号码，该SDP和该呼叫上下文用于该宽带核心网指示该宽带集群基站为该当前呼叫分配无线资源。
结合本发明实施例的第一方面的第一种实现方式，在本发明实施例的第一 方面的第七种实现方式中，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源包括：
该终端判断该当前呼叫是否为单呼；
若该当前呼叫是单呼，则该终端通过该宽带服务小区对应的宽带集群基站向该宽带服务小区归属的宽带核心网发送小区切换请求，以使得该宽带核心网向该窄带服务小区归属的窄带核心网发送第一小区切换准备请求，该第一小区切换准备请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号，并指示该宽带集群基站根据该号码，该SDP和呼叫上下文为该当前呼叫分配无线资源，该呼叫上下文由该窄带核心网根据该LAI和该业务信道号查询并发送给该宽带核心网。
结合本发明实施例的第一方面的第一种实现方式，在本发明实施例的第一方面的第八种实现方式中，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源包括：
该终端判断该当前呼叫是否为单呼；
若该当前呼叫是单呼，则该终端通过该窄带服务小区对应的窄带集群基站向该窄带服务小区归属的窄带核心网发送小区切换请求，以使得该窄带核心网向该宽带核心网发送第二小区切换准备请求，该第二小区切换准备请求携带该号码，该SDP和该当前呼叫的呼叫上下文，该呼叫上下文信息由该窄带核心网查询得到，该号码，该SDP和该呼叫上下文用于该宽带核心网指示该宽带集群基站为该当前呼叫分配无线资源。
结合本发明实施例的第一方面的第一种实现方式，在本发明实施例的第一方面的第九种实现方式中，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源包括：
该终端通过该宽带服务小区对应的宽带集群基站向该统一融合核心网发送小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该业务信道号，以使得该统一融合核心网根据该LAI以及该业务信道号查询该当前呼叫的呼叫上下文，并指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
结合本发明实施例的第一方面的第一种实现方式，在本发明实施例的第一 方面的第十种实现方式中，该终端请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源包括：
该终端通过该窄带服务小区对应的窄带集群基站向该统一融合核心网发送小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，以使得该统一融合核心网查询该当前呼叫的呼叫上下文，并指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
结合本发明实施例的第一方面，在本发明实施例的第一方面的第十一种实现方式中，该终端获取该宽带服务小区中的该当前呼叫的无线资源的信息包括：
该终端判断该当前呼叫是否为组呼，若是，则该终端接收该宽带服务小区发送的广播信息；
该终端根据该广播信息判断该终端是否参与该组呼，若是，则该终端接收该宽带服务小区对应的宽带集群基站发送的该当前呼叫的无线资源的信息。
第二方面，本发明实施例提供一种终端，该终端具有实现上述方法中终端实现的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
一种可能实现方式中，该终端包括：
呼叫模块，用于在窄带服务小区参与当前呼叫，该终端在宽带服务小区及该窄带服务小区均有注册；
获取模块，用于获取该宽带服务小区中的该呼叫模块参与的该当前呼叫的无线资源的信息；
处理模块，用于根据该获取模块获取得到的该无线资源的信息从该窄带服务小区切换至该宽带服务小区并利用该无线资源继续该当前呼叫。
另一种可能实现方式中，该终端包括：
收发器，处理器和总线；
该收发器，该处理器通过该总线相连；
该收发器，用于执行如下指令：
在窄带服务小区参与当前呼叫，该终端在宽带服务小区及该窄带服务小区均有注册；获取该宽带服务小区中的该呼叫模块参与的该当前呼叫的无线资源 的信息；
该处理器，用于执行如下指令：
根据该获取模块获取得到的该无线资源的信息从该窄带服务小区切换至该宽带服务小区并利用该无线资源继续该当前呼叫。
第三方面，本发明实施例提供一种小区切换方法，包括：核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源，该终端在窄带服务小区参与该当前呼叫，该终端在该宽带服务小区及该窄带服务小区均有注册；该核心网设备将该无线资源的信息发送给该终端，以使得该终端可以根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区继续该当前呼叫。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第一种实现方式中，该核心网设备为该宽带服务小区归属的宽带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
该宽带核心网接收该终端通过该宽带集群基站发送的小区切换请求；
该宽带核心网向该窄带服务小区归属的窄带核心网发送第一小区切换准备请求，该第一小区切换准备请求包括该终端的号码，该终端的会话描述协议SDP，该窄带服务小区的无线位置识别号LAI和该窄带服务小区的业务信道号，以使得该窄带核心网根据该LAI和该业务信道号查询该当前呼叫的呼叫上下文；
该宽带核心网接收该窄带核心网发送的第二小区切换准备请求，该第二小区切换准备请求携带该号码，该SDP和该呼叫上下文；
该宽带核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第二种实现方式中，该核心网设备为该窄带服务小区归属的窄带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
该窄带核心网接收该终端通过该窄带服务小区对应的窄带集群基站发送的小区切换请求；
该窄带核心网向该宽带核心网发送第三小区切换准备请求，该第三小区切换准备请求携带该终端的号码，该终端的SDP和该当前呼叫的呼叫上下文， 该呼叫上下文信息由该窄带核心网查询得到，以使得该宽带核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第三种实现方式中，该核心网设备为统一融合核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
该统一融合核心网接收该终端通过该宽带服务小区对应的宽带集群基站发送的小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号；
该统一融合核心网根据该LAI以及该业务信道号查询该当前呼叫的呼叫上下文；
该统一融合核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第四种实现方式中，该核心网设备为统一融合核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
该统一融合核心网接收该终端通过该窄带服务小区对应的窄带集群基站发送的小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP；
该统一融合核心网查询该当前呼叫的呼叫上下文；
该统一融合核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第五种实现方式中，该核心网设备为该宽带服务小区归属的宽带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
该宽带核心网接收该终端通过该宽带集群基站发送的小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号；
该宽带核心网向该窄带服务小区归属的窄带核心网发送第四小区切换准备请求，该第四小区切换准备请求包括该号码，该SDP，该LAI以及该业务信道号，以使得该窄带核心网根据该LAI以及该业务信道号查询该当前呼叫 的呼叫身份标识ID；
该宽带核心网接收该窄带核心网发送的第五小区切换准备请求，该第五小区切换准备请求携带该号码，该SDP和该呼叫ID；
该宽带核心网根据该呼叫ID查询该当前呼叫的呼叫上下文；
该宽带核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第六种实现方式中，该核心网设备为该窄带服务小区归属的窄带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
该窄带核心网接收该终端通过该窄带服务小区对应的窄带集群基站发送的小区切换请求，该小区切换请求携带该终端的号码和该终端的SDP；
该窄带核心网向该宽带服务小区归属的宽带核心网发送第六小区切换准备请求，该第六小区切换准备请求携带该号码，该SDP和该当前呼叫的呼叫身份标识ID，以使得该宽带核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源，该呼叫上下文为该宽带核心网根据该呼叫ID查询该当前呼叫得到。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第七种实现方式中，该核心网设备为该宽带服务小区归属的宽带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
该宽带核心网接收该终端通过该宽带服务小区对应的宽带集群基站发送的小区切换请求；
该宽带核心网向该窄带服务小区归属的窄带核心网发送该第七小区切换准备请求，该第七小区切换准备请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号，以使得该窄带服务小区归属的窄带核心网向组归属窄带核心网发送第八小区切换准备请求，该第八小区切换准备请求包括该号码，该SDP和呼叫ID，该呼叫ID由该窄带服务小区归属的窄带核心网根据该LAI以及该业务信道号查询得到；
该宽带核心网接收该组归属窄带核心网发送的第九小区切换准备请求，该第九小区切换准备请求包括该号码，该SDP和呼叫上下文，该呼叫上下文由 该组归属窄带核心网根据该呼叫ID查询得到；
该宽带核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
结合本发明实施例的第三方面，在本发明实施例的第三方面的第八种实现方式中，该核心网设备为该窄带服务小区归属的窄带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
该窄带服务小区归属的窄带核心网接收该终端通过该窄带服务小区归属的窄带集群基站发送的小区切换请求，该小区切换请求包括该终端的号码和该终端的SDP；
该窄带服务小区归属的窄带核心网查询该当前呼叫的呼叫ID；
该窄带服务小区归属的窄带核心网向组归属窄带核心网发送第十小区切换准备请求，该第十小区切换准备请求携带该终端的号码，该终端的SDP和该呼叫ID，以使得该组归属窄带核心网向该宽带服务小区归属的宽带核心网发送第十一小区切换准备请求，该第十一小区切换准备请求包括该号码，该SDP和该呼叫上下文，该呼叫上下文由该组归属窄带核心网根据该呼叫ID查询得到，该号码，该SDP和该呼叫上下文用于该宽带核心网指示该宽带集群基站为该当前呼叫分配无线资源。
第四方面，本发明实施例提供一种核心网设备，该核心网设备具有实现上述方法中核心网设备实现的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
一种可能实现方式中，该核心网设备包括：
分配模块，用于接收终端的请求为当前呼叫在宽带服务小区分配无线资源，该终端在窄带服务小区参与该当前呼叫，该终端在该宽带服务小区及该窄带服务小区均有注册；
发送模块，用于将该无线资源的信息发送给该终端，以使得该终端可以根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区继续该当前呼叫。
另一种可能实现方式中，该核心网设备包括：
收发器，处理器和总线；
该收发器与该处理器通过该总线相连；
该处理器，用于执行如下指令：接收终端的请求为当前呼叫在宽带服务小区分配无线资源，该终端在窄带服务小区参与该当前呼叫，该终端在该宽带服务小区及窄带服务小区均注册；
该收发器，用于执行如下指令：将该处理模块获取到的该无线资源的信息发送给该终端，以使得该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区继续该当前呼叫。
从以上技术方案可以看出，本发明实施例具有以下优点：
本发明实施例中，在窄带服务小区参与当前呼叫的终端可以获取宽带服务小区中存在的当前呼叫的无线资源的信息，根据该无线资源的信息即可从窄带服务小区切换至宽带服务小区并利该无线资源继续当前呼叫，通过上述方案，使得双模终端可以从窄带服务小区切换到宽带服务小区，继续保持呼叫，避免掉话。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为网关互联的网络架构的一个结构示意图；
图2为统一融合的网络架构的一个结构示意图；
图3为本发明实施例小区切换方法一个流程示意图；
图4为本发明实施例小区切换方法一个信令交互示意图；
图5为本发明实施例小区切换方法另一个信令交互示意图；
图6为本发明实施例小区切换方法另一个信令交互示意图；
图7为本发明实施例小区切换方法另一个信令交互示意图；
图8为本发明实施例小区切换方法另一个信令交互示意图；
图9为本发明实施例小区切换方法另一个信令交互示意图；
图10为本发明实施例小区切换方法另一个信令交互示意图；
图11为本发明实施例小区切换方法另一个信令交互示意图；
图12为本发明实施例小区切换方法另一个信令交互示意图；
图13为本发明实施例小区切换方法另一个信令交互示意图；
图14为本发明实施例终端一个结构示意图；
图15为本发明实施例终端另一个结构示意图；
图16为本发明实施例核心网设备的一个结构示意图；
图17为本发明实施例核心网设备的另一个结构示意图。
具体实施方式
本发明实施例提供了一种小区切换方法以及终端，用于实现从宽带小区往窄带小区的切换，避免掉话。
本申请的说明书和权利要求书及上述附图中涉及的“第一”、“第二”、“第三”、“第四”(如果存在)等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本发明实施例提供的小区切换方法可以应用于网关互联的网络架构，也可以应用于统一融合的网络架构。本发明实施例中所提到的终端为同时支持宽带系统和窄带系统的双模终端，终端处于双待机模式，即终端同时在宽带服务小区和窄带服务小区注册并在网，且终端正通过窄带服务小区参与一个呼叫(单呼或组呼)。本发明实施例提供的小区切换方法，使得终端可以从窄带服务小区切换到宽带目标小区，继续保持呼叫，避免掉话。本发明实施例中所提到的终端可以为对讲机也可以为手机。
下面通过具体实施例，分别进行详细说明，请参阅图3，本发明实施例提供一种小区切换方法，包括：
301、终端在窄带服务小区参与当前呼叫，该终端在宽带服务小区及该窄带服务小区均注册。
该终端在该窄带服务小区中发起当前呼叫，该终端为集群双模终端。即该终端可以在宽带服务小区进行通话，也可以在窄带服务小区进行通话。
302、终端获取该宽带服务小区中存在的当前呼叫的无线资源的信息。
终端可以同时监测窄带集群系统当前服务小区(即窄带服务小区)的信号质量(例如可根据接收信号强度指示RSSI或误码率BER来衡量)和宽带集群系统当前服务小区(即宽带服务小区)的信号质量(例如可根据参考信号接收功率RSRP或参考信号接收质量RSRQ来衡量)，通过预设的判决算法判断当前是否满足切换条件，例如当窄带服务小区的信号质量低于第一预设阈值，而宽带服务小区的信号质量高于第二预设阈值，则认为满足切换条件，第二预设阈值大于等于第一预设阈值。
在确定满足切换条件并确定需要切换时，终端需要获取宽带服务小区中存在的当前呼叫的无线资源的信息。
其中，宽带服务小区中存在的当前呼叫的无线资源可以是切换之前分配的(例如当前呼叫为组呼，且该宽带服务小区中本身就已参与当前呼叫)；或者宽带服务小区中存在的当前呼叫的无线资源为切换时实时分配的(例如宽带服务未参与当前组呼或当前呼叫为单呼时，宽带服务小区归属的宽带核心网在接收到终端的请求后，控制宽带服务小区对应的宽带集群基站，在宽带服务小区实时为当前呼叫分配无线资源)。
宽带服务小区中存在的当前呼叫的无线资源的信息可以包括无线资源控制(英文全称：Radio Resource Control，简称：RRC)配置参数(包括无线链路控制层协议(英文全称：Radio Link Control，简称：RLC)参数、媒体访问控制(英文全称：Media Access Control，简称：MAC)参数和物理层参数)、UE测量信息等。
303、终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区并利用该无线资源继续该当前呼叫。
该终端在获取得到该无线资源的信息之后，将从窄带服务小区切换至该宽带服务小区。
基于上述方法的描述可以理解的是，在302步骤中，如果宽带服务小区中存在的当前呼叫的无线资源为切换之前分配的，且宽带服务小区已参与当前的 组呼，则终端获取该无线资源的信息的方法如下：终端直接通过该宽带服务小区的空口广播的消息中获取该无线资源的信息。
下面几个实施例详细介绍当宽带服务小区中的当前呼叫的无线资源为切换时实时分配的时，终端获取该无线资源的信息的方法。其中图4至图9对应网关互联的网络结构，图10至图13对应统一融合的网络架构。
首先请参阅图4，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该宽带服务小区归属的宽带核心网，当前呼叫为组呼，组归属窄带核心网，终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由窄带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过该窄带集群基站向窄带核心网发起小区切换请求P_HANDOVER，该P_HANDOVER会携带有该终端的用户号码和会话描述协议SDP的相关参数；
该窄带服务小区归属的窄带核心网根据该终端所处的业务信道查询该当前呼叫的呼叫身份标识ID，并向组归属窄带核心网发送小区切换准备请求，该组归属窄带核心网根据该呼叫ID查询该当前呼叫的呼叫上下文(比如主叫号码15708971878，被叫组号码18908157150，呼叫类型，呼叫属性等信息)；
该组归属窄带核心网通过网关向宽带核心网发送小区切换准备请求PSIP PREPARE，该PSIP PREPARE携带有该号码，该SDP以及该呼叫上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该网关将该PSIP PREPARE转换为SIP(REFER)信令发往该宽带核心网，该SIP(REFER)信令携带有该SDP，该号码以及该呼叫上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该宽带核心网将指示由该宽带核心网控制的宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源；
该宽带核心网向网关发送反馈消息SIP 200 OK信令；
该网关将该SIP 200 OK信令转换为反馈消息PSIP 200 OK信令发送给该组归属窄带核心网，该组归属窄带核心网将PSIP 200 OK信令发送给该窄带服务小区归属的窄带核心网；
该终端接收该宽带集群基站广播的Group Call Config消息(该消息承载该宽带核心网发送的NAS消息GROUP CALL SETUP INDICATION)，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫。
请参阅图5，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该宽带服务小区归属的宽带核心网；该当前呼叫为组呼，组归属宽带核心网；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由窄带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过该窄带集群基站向窄带核心网发起小区切换请求P_HANDOVER，该P_HANDOVER会携带有该终端的用户号码和会话描述协议SDP的相关参数；
该窄带核心网根据该终端所处的业务信道查询该当前呼叫的呼叫身份标识ID；
该窄带核心网通过网关向宽带核心网发送小区切换准备请求PSIP PREPARE，该PSIP PREPARE携带有该呼叫ID，该终端的号码和该终端的SDP；
该网关将该PSIP PREPARE转换为SIP(REFER)信令发往该宽带核心网，该SIP(REFER)信令携带有该呼叫ID，该终端的号码和该终端的SDP；
该宽带核心网根据该呼叫ID查询该当前呼叫的呼叫上下文；
该宽带核心网将指示由该宽带核心网控制的宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源；
该宽带核心网向网关反馈SIP 200 OK信令；
该网关将该SIP 200 OK信令转换为PSIP 200 OK信令发送给该窄带核心网；
该终端接收该宽带集群基站广播的Group Call Config消息(该消息承载该宽带核心网发送的NAS消息GROUP CALL SETUP INDICATION)，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫。
请参阅图6，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该宽带服务小区归属的宽带核心网；该当前呼叫为组呼，组归属宽带核心网；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由宽带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过宽带集群基站向宽带核心网广播小区切换请求TRUNKING HANDOVER REQUEST，携带该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该宽带核心网通过网关向该窄带核心网发送小区切换准备请求SIP REFER，该SIP REFER携带有该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该网关将该SIP REFER转换为PSIP PREPARE信令发往该窄带核心网，该信令携带为该终端的号码，该终端的SDP参数，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该窄带核心网根据该窄带服务小区的LAI和该窄带服务小区的业务信道号查询该当前呼叫的呼叫ID；
该窄带核心网通过该网关向该宽带核心网发送小区切换准备请求PSIP PREPARE，该PSIP PREPARE携带该终端的号码，该终端的SDP和该呼叫ID；
该宽带核心网根据该呼叫ID查询该当前呼叫的上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该宽带核心网将指示由该宽带核心网控制的宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源；
该终端接收该宽带集群基站广播的Group Call Config消息(该消息承载该宽带核心网发送的NAS消息GROUP CALL SETUP INDICATION)，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫。
请参阅图7，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该宽带服务小区归属的宽带核心网；该当前呼叫为组呼，组归属窄带核心网；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由宽带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过宽带集群基站向宽带核心网广播TRUNKING HANDOVER REQUEST，携带该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该宽带核心网通过网关向该窄带服务小区归属的窄带核心网发送小区切换准备请求SIP REFER，该SIP REFER携带有该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该网关将该SIP REFER转换为PSIP PREPARE信令发往该窄带服务小区归属的该窄带核心网，该信令携带为该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该窄带服务小区归属的该窄带核心网根据该窄带服务小区的LAI和该窄带服务小区的业务信道号查询该当前呼叫的呼叫ID，并将该呼叫ID发送给该组归属窄带核心网；
该组归属窄带核心网根据该呼叫ID查询该当前呼叫的上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该组归属窄带核心网通过网关向该宽带核心网发送小区切换准备请求PSIP PREPARE，该PSIP PREPARE携带有该终端的号码，该终端的SDP和该呼叫上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该网关将该PSIP PREPARE转换为SIP(REFER)信令发往该宽带核心网，该SIP(REFER)信令携带有该终端的号码，该终端的SDP和该呼叫上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该宽带核心网将指示由该宽带核心网控制的宽带集群基站根据该终端的号码，该终端的SDP和该呼叫上下文为该当前呼叫分配无线资源；
该宽带核心网向网关反馈SIP 200 OK信令；
该网关将该SIP 200 OK信令转换为PSIP 200 OK信令发送给该组归属窄 带核心网，该组归属窄带核心网将该PSIP 200 OK信令发送给该窄带服务小区归属的窄带核心网；
该终端接收该宽带集群基站广播的Group Call Config消息(该消息承载该宽带核心网发送的NAS消息GROUP CALL SETUP INDICATION)，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫。
请参阅图8，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该宽带服务小区归属的宽带核心网；该当前呼叫为单呼；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由宽带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过宽带集群基站向宽带核心网广播TRUNKING HANDOVER REQUEST，携带该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该宽带核心网通过网关向该窄带核心网发送小区切换准备请求SIP REFER，该SIP REFER携带有该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该网关将该SIP REFER转换为PSIP PREPARE信令发往该窄带核心网，该信令携带为该终端的号码，该终端的SDP，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该窄带核心网根据该窄带服务小区的LAI和该窄带服务小区的业务信道号查询该当前呼叫的上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该窄带核心网通过网关向宽带核心网发送小区切换准备请求PSIP PREPARE，该PSIP PREPARE携带有该终端的号码，该终端的SDP和该呼叫上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该网关将该PSIP PREPARE转换为SIP(REFER)信令发往该宽带核心网，该SIP(REFER)信令携带有该终端的号码，该终端的SDP和该呼叫上下文 (该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该宽带核心网将指示由该宽带核心网控制的宽带集群基站根据该终端的号码，该终端的SDP和该呼叫上下文为该当前呼叫分配无线资源；
该终端接收该宽带集群基站发送的RRC连接重配消息RRC Connection Reconfig，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端向该宽带集群基站发送RRC连接重配完成消息RRC Connection Reconfig Complete并根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫；
该宽带核心网向网关反馈SIP 200 OK信令指示切换完成；
该网关将该SIP 200 OK信令转换为PSIP 200 OK信令发送给该窄带核心网。
请参阅图9，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该宽带服务小区归属的宽带核心网；该当前呼叫为单呼；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由窄带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过该窄带集群基站向窄带核心网发起小区切换请求P_HANDOVER，该P_HANDOVER会携带有该终端的用户号码和会话描述协议SDP的相关参数；
该窄带核心网查询该当前呼叫的呼叫上下文(比如主叫号码15708971878，被叫组号码18908157150，呼叫类型，呼叫属性等信息)；
该窄带核心网通过网关向宽带核心网发送小区切换准备请求PSIP PREPARE，该PSIP PREPARE携带有该终端的号码，该终端的SDP和该呼叫上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该网关将该PSIP PREPARE转换为SIP(REFER)信令发往该宽带核心网，该SIP(REFER)信令携带有该终端的号码，该终端的SDP和该呼叫上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该宽带核心网将指示由该宽带核心网控制的宽带集群基站根据该终端的号码，该终端的SDP和该呼叫上下文为该当前呼叫分配无线资源；
该终端接收该宽带集群基站发送的RRC连接重配消息RRC Connection Reconfig，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
RRC连接重配完成消息RRC Connection Reconfig Complete并根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫；
该宽带核心网向网关反馈SIP 200 OK信令指示切换完成；
该网关将该SIP 200 OK信令转换为PSIP 200 OK信令发送给该窄带核心网。
请参阅图10，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该统一融合核心网；该当前呼叫为组呼；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由窄带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过该窄带集群基站向统一融合核心网发起小区切换请求P_HANDOVER，该P_HANDOVER会携带有该终端的用户号码和会话描述协议SDP的相关参数；
该统一融合核心网根据该终端所处的业务信道查询该当前呼叫的呼叫上下文；
该统一融合核心网将指示由该统一融合核心网控制的宽带集群基站根据该终端的号码，该终端的SDP和该呼叫上下文为该当前呼叫分配无线资源；
该终端接收该宽带集群基站广播的Group Call Config消息(该消息承载该宽带核心网发送的NAS消息GROUP CALL SETUP INDICATION)，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫。
请参阅图11，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该统一融合核心网；该当前呼叫为组呼；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由宽带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过宽带集群基站向统一融合核心网广 播TRUNKING HANDOVER REQUEST，携带该终端的号码，该终端的SDP参数，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该统一融合核心网根据该终端该的业务信道该LAI和该业务信道号查询该当前呼叫的上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该统一融合核心网将指示由该统一融合核心网控制的宽带集群基站根据该终端的号码，该终端的SDP参数和该呼叫上下文为该当前呼叫分配无线资源；
该终端接收该宽带集群基站广播的Group Call Config消息(该消息承载该宽带核心网发送的NAS消息GROUP CALL SETUP INDICATION)，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫。
请参阅图12，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该统一融合核心网；该当前呼叫为单呼；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由窄带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过该窄带集群基站向统一融合核心网发起小区切换请求P_HANDOVER，该P_HANDOVER会携带有该终端的用户号码和会话描述协议SDP的相关参数；
该统一融合核心网根据该终端所处的业务信道查询该当前呼叫的呼叫上下文(比如主叫号码15708971878，被叫组号码18908157150，呼叫类型，呼叫属性等信息)；
该统一融合核心网将指示由该统一融合核心网控制的宽带集群基站根据该终端的号码，该终端的SDP参数和该呼叫上下文为该当前呼叫分配无线资源；
该终端接收该宽带集群基站发送的RRC连接重配消息RRC Connection Reconfig，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端向该宽带集群基站发送RRC连接重配完成消息RRC Connection Reconfig Complete并根据该无线资源的信息从该窄带服务小区切换至该宽带 服务小区，并利用该无线资源收发数据继续该当前呼叫。
请参阅图13，本实施例中，该无线资源为该宽带服务小区对应的宽带集群基站在切换时实时为该当前呼叫分配的，该宽带集群基站受控于该统一融合核心网；该当前呼叫为单呼；终端当前处于窄带服务小区，欲切换至宽带服务小区继续当前呼叫，终端由宽带服务小区发起切换请求，具体方法包括：
终端在确定需要进行小区切换后，通过宽带集群基站向统一融合核心网广播TRUNKING HANDOVER REQUEST，携带该终端的号码，该终端的SDP参数，该窄带服务小区的LAI和该窄带服务小区的业务信道号；
该统一融合核心网根据该LAI和该业务信道号查询该当前呼叫的上下文(该主叫号码，被叫组号码，呼叫类型，呼叫属性等信息)；
该统一融合核心网将指示由该统一融合核心网控制的宽带集群基站根据该终端的号码，该终端的SDP参数和该呼叫上下文为该当前呼叫分配无线资源；
该终端接收该宽带集群基站发送的RRC连接重配消息RRC Connection Reconfig，获取该宽带集群基站为该当前呼叫分配的无线资源的信息；
该终端向该宽带集群基站发送RRC连接重配完成消息RRC Connection Reconfig Complete并根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区，并利用该无线资源收发数据继续该当前呼叫。
本实施例中，在窄带服务小区参与当前呼叫的终端可以获取宽带服务小区中存在的当前呼叫的无线资源的信息，根据该无线资源的信息即可从窄带服务小区切换至宽带服务小区并利该无线资源继续当前呼叫，通过上述方案，使得双模终端可以从窄带服务小区切换到宽带服务小区，继续保持呼叫，避免掉话。
下面介绍本发明实施例提供的终端，具体请参阅图14所示，本实施例提供的终端1400包括：
呼叫模块1401，用于在窄带服务小区参与当前呼叫，该终端在宽带服务小区及该窄带服务小区均有注册；
获取模块1402，用于获取该宽带服务小区中的该呼叫模块参与的该当前呼叫的无线资源的信息；
处理模块1403，用于根据该获取模块获取得到的该无线资源的信息从该 窄带服务小区切换至该宽带服务小区并利用该无线资源继续该当前呼叫。
可选的，该获取模块1402包括：
请求单元，用于请求核心网设备为该当前呼叫在该宽带服务小区分配无线资源；
第一获取单元，用于接收该宽带服务小区对应的宽带集群基站发送的该无线资源的信息。
可选的，该获取模块1402还包括：
第一判断单元，用于判断该当前呼叫是否为组呼，若是，则该终端接收该宽带服务小区发送的广播信息；
第二判断单元，用于根据该第一判断单元该广播信息判断该终端是否参与该组呼，若否，则触发请求该核心网设备为该当前呼叫在该宽带服务小区分配无线资源。
可选的，该请求单元包括：
第一处理子单元，用于通过该宽带集群基站向该宽带核心网发送小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号，以使得该宽带核心网向该窄带服务小区归属的窄带核心网发送第三小区切换准备请求，该第三小区切换准备请求包括该号码，该SDP，该LAI以及该业务信道号，并指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源，该呼叫上下文由该宽带核心网根据该窄带核心网发送的呼叫身份标识ID查询得到，该呼叫ID由该窄带核心网根据该LAI以及该业务信道号查询得到。
可选的，该请求单元包括：
第二处理子单元，用于通过该窄带服务小区对应的窄带集群基站向该窄带服务小区归属的窄带核心网发送小区切换请求，该小区切换请求携带该终端的号码和该终端的SDP，以使得该窄带核心网向该宽带核心网发送第四小区切换准备请求，该第四小区切换准备请求携带该号码，该SDP和该当前呼叫的呼叫身份标识ID，该呼叫ID用于该宽带核心网查询该当前呼叫的呼叫上下文，该号码，该SDP和该呼叫上下文用于该宽带核心网指示该宽带集群基站为该当前呼叫分配无线资源。
可选的，该请求单元包括：
第三处理子单元，用于通过该宽带服务小区对应的宽带集群基站向该宽带服务小区归属的宽带核心网发送小区切换请求，以使得该宽带核心网向该窄带服务小区归属的窄带核心网发送第五小区切换准备请求，该第五小区切换准备请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号，并指示该宽带集群基站根据包括该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源，该呼叫上下文由组归属窄带核心网根据呼叫ID查询并发送给该宽带核心网，该呼叫ID由该窄带服务小区归属的窄带核心网根据该LAI以及该业务信道号查询并发送给该组归属窄带核心网。
可选的，该请求单元包括：
第四处理子单元，用于通过该窄带服务小区归属的窄带集群基站向该窄带服务小区归属的窄带核心网发送小区切换请求，该小区切换请求包括该终端的号码和该终端的SDP，以使得该窄带服务小区归属的窄带核心网查询该当前呼叫的呼叫ID并发送给组归属窄带核心网，该呼叫ID用于该组归属窄带核心网查询该当前呼叫的呼叫上下文，该号码，该SDP和该呼叫上下文用于该宽带核心网指示该宽带集群基站为该当前呼叫分配无线资源；
可选的，该请求单元包括：
第一判断子单元，用于判断该当前呼叫是否为单呼；
第五处理子单元，用于若该当前呼叫是单呼，则通过该宽带服务小区对应的宽带集群基站向该宽带服务小区归属的宽带核心网发送小区切换请求，以使得该宽带核心网向该窄带服务小区归属的窄带核心网发送第一小区切换准备请求，该第一小区切换准备请求包括该终端的号码，该终端的会话描述协议SDP，该窄带服务小区的无线位置识别号LAI和该窄带服务小区的业务信道号，并指示该宽带集群基站根据该号码，该SDP和呼叫上下文为该当前呼叫分配无线资源，该呼叫上下文由该窄带核心网根据该LAI和该业务信道号查询并发送给该宽带核心网。
可选的，该请求单元包括：
第二判断子单元，用于判断该当前呼叫是否为单呼；
第六处理子单元，用于若该当前呼叫是单呼，则通过该窄带服务小区对应 的窄带集群基站向该窄带服务小区归属的窄带核心网发送小区切换请求，以使得该窄带核心网向该宽带核心网发送第二小区切换准备请求，该第二小区切换准备请求携带该号码，该SDP和该当前呼叫的呼叫上下文，该呼叫上下文信息由该窄带核心网查询得到，该号码，该SDP和该呼叫上下文用于该宽带核心网指示该宽带集群基站为该当前呼叫分配无线资源。
可选的，该请求单元包括：
第七处理子单元，用于通过该宽带服务小区对应的宽带集群基站向该统一融合核心网发送小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该业务信道号，以使得该统一融合核心网根据该LAI以及该业务信道号查询该当前呼叫的呼叫上下文，并指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
可选的，该请求单元包括：
第八处理子单元，用于通过该窄带服务小区对应的窄带集群基站向该统一融合核心网发送小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，以使得该统一融合核心网查询该当前呼叫的呼叫上下文，并指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
可选的，该获取模块1402还包括：
第三判断单元，用于判断该当前呼叫是否为组呼，若是，则该终端接收该宽带服务小区发送的广播信息；
第四判断单元，用于根据该广播信息判断该终端是否参与该组呼，若是，则接收该宽带服务小区对应的宽带集群基站发送的该组呼的无线资源的信息。
本实施例中，当呼叫模块1401在窄带服务小区参与当前呼叫时，获取模块1402可以获取宽带服务小区中的当前呼叫的无线资源的信息，处理模块1403根据该无线资源的信息即可从窄带服务小区切换至宽带服务小区并利该无线资源继续当前呼叫，通过上述方案，使得双模终端可以从窄带服务小区切换到宽带服务小区，继续保持呼叫，避免掉话。
以下从硬件装置的角度，对上述实施例的终端进行描述，请参阅图15，本实施例的终端1500包括：
收发器1501，处理器1502和总线1503；
该收发器1501，该处理器1502通过该总线1503相连；
该收发器1501，用于执行如下指令：
在窄带服务小区参与当前呼叫，该终端在宽带服务小区及该窄带服务小区均注册；获取该宽带服务小区中的该呼叫模块参与的该当前呼叫的无线资源的信息；
该处理器1502，用于执行如下指令：
根据该获取模块获取得到的该无线资源的信息从该窄带服务小区切换至该宽带服务小区并利用该无线资源继续该当前呼叫。
另外，本实施例中的终端1500还可以包括存储器1504，存储器1504用于存储软件程序及缓存数据，收发器1501以及存储器1504通过总线1503与处理器1502通信连接。
本实施例的终端1500还可以执行前述方法实施例的其他步骤，此处不再赘述。
本实施例中，当收发器1501在窄带服务小区参与当前呼叫时，处理器1502可以获取宽带服务小区中存在的当前呼叫的无线资源的信息，处理器1502根据该无线资源的信息即可从窄带服务小区切换至宽带服务小区并利该无线资源继续当前呼叫，通过上述方案，使得双模终端可以从窄带服务小区切换到宽带服务小区，继续保持呼叫，避免掉话。
下面介绍本发明实施例提供的核心网设备，具体请参阅图16所示，本实施例提供的核心网设备1600包括：
分配模块1601，用于接收终端的请求为当前呼叫在宽带服务小区分配无线资源，该终端在窄带服务小区参与该当前呼叫，该终端在该宽带服务小区及该窄带服务小区均有注册；
发送模块1602，用于将该无线资源的信息发送给该终端，以使得该终端根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区继续该当前呼叫。
可选的，该核心网设备为该宽带服务小区归属的宽带核心网时，该分配模块1601包括：
第一接收单元，用于接收该终端通过该宽带集群基站发送的小区切换请 求；
第一发送单元，用于向该窄带服务小区归属的窄带核心网发送第一小区切换准备请求，该第一小区切换准备请求包括该终端的号码，该终端的会话描述协议SDP，该窄带服务小区的无线位置识别号LAI和该窄带服务小区的业务信道号，以使得该窄带核心网根据该LAI和该业务信道号查询该当前呼叫的呼叫上下文；
第二接收单元，用于接收该窄带核心网发送的第二小区切换准备请求，该第二小区切换准备请求携带该号码，该SDP和该呼叫上下文；
第一分配单元，用于指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
可选的，该核心网设备为该窄带服务小区归属的窄带核心网时，该分配模块1601包括：
第三接收单元，用于接收该终端通过该窄带服务小区对应的窄带集群基站发送的小区切换请求；
第二发送单元，用于向该宽带核心网发送第三小区切换准备请求，该第三小区切换准备请求携带该终端的号码，该终端的SDP和该当前呼叫的呼叫上下文，该呼叫上下文信息由该窄带核心网查询得到，以使得该宽带核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
可选的，该核心网设备为统一融合核心网时，该分配模块1601包括：
第四接收单元，用于接收该终端通过该宽带服务小区对应的宽带集群基站发送的小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号；
第一查询单元，用于根据该LAI以及该业务信道号查询该当前呼叫的呼叫上下文；
第二分配单元，用于指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
可选的，该核心网设备为统一融合核心网时，该分配模块1601包括：
第五接收单元，用于接收该终端通过该窄带服务小区对应的窄带集群基站 发送的小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP；
第二查询单元，用于查询该当前呼叫的呼叫上下文；
第三分配单元，用于指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
可选的，该核心网设备为该宽带服务小区归属的宽带核心网时，该分配模块1601包括：
第六接收单元，用于接收该终端通过该宽带集群基站发送的小区切换请求，该小区切换请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号；
第三发送单元，用于向该窄带服务小区归属的窄带核心网发送第四小区切换准备请求，该第四小区切换准备请求包括该号码，该SDP，该LAI以及该业务信道号，以使得该窄带核心网根据该LAI以及该业务信道号查询该当前呼叫的呼叫身份标识ID；
第七接收单元，用于接收该窄带核心网发送的第五小区切换准备请求，该第五小区切换准备请求携带该号码，该SDP和该呼叫ID；
第三查询单元，用于根据该呼叫ID查询该当前呼叫的呼叫上下文；
第四分配单元，用于指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
可选的，该核心网设备为该窄带服务小区归属的窄带核心网时，该分配模块1601包括：
第八接收单元，用于接收该终端通过该窄带服务小区对应的窄带集群基站发送的小区切换请求，该小区切换请求携带该终端的号码和该终端的SDP；
第四发送单元，用于向该宽带服务小区归属的宽带核心网发送第六小区切换准备请求，该第六小区切换准备请求携带该号码，该SDP和该当前呼叫的呼叫身份标识ID，以使得该宽带核心网指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源，该呼叫上下文为该宽带核心网根据该呼叫ID查询该当前呼叫得到。
可选的，该核心网设备为该宽带服务小区归属的宽带核心网时，该分配模块1601包括：
第九接收单元，用于接收该终端通过该宽带服务小区对应的宽带集群基站发送的小区切换请求；
第五发送单元，用于向该窄带服务小区归属的窄带核心网发送该第七小区切换准备请求，该第七小区切换准备请求包括该终端的号码，该终端的SDP，该窄带服务小区的LAI以及该窄带服务小区的业务信道号，以使得该窄带服务小区归属的窄带核心网向组归属窄带核心网发送第八小区切换准备请求，该第八小区切换准备请求包括该号码，该SDP和呼叫ID，该呼叫ID由该窄带服务小区归属的窄带核心网根据该LAI以及该业务信道号查询得到；
第十接收单元，用于接收该组归属窄带核心网发送的第九小区切换准备请求，该第九小区切换准备请求包括该号码，该SDP和呼叫上下文，该呼叫上下文由该组归属窄带核心网根据该呼叫ID查询得到；
第五分配单元，用于指示该宽带集群基站根据该号码，该SDP和该呼叫上下文为该当前呼叫分配无线资源。
本实施例中，分配模块1601在接收到双模终端发送的请求后为该终端在宽带服务小区内分配无线资源，发送模块1602将该无线资源的信息发送给该双模终端，从而使得该双模终端可能根据该无线资源的信息从窄带服务小区切换至宽带服务小区并利用该无线资源进行通话。通过上述方案，使得双模终端可以从窄带服务小区切换到宽带服务小区，继续保持呼叫，避免掉话。
以下从硬件装置的角度，对上述实施例的核心网设备进行描述，请参阅图17，本实施例的核心网设备1700包括：
收发器1701，处理器1702和总线1703；
该收发器1701，该处理器1702通过该总线1703相连；
该处理器1702，用于执行如下指令：
接收终端的请求为当前呼叫在宽带服务小区分配无线资源，该终端在窄带服务小区参与该当前呼叫，该终端在该宽带服务小区及窄带服务小区均注册；
该收发器1701，用于执行如下指令：
将该处理模块获取到的该无线资源的信息发送给该终端，以使得该终端可以根据该无线资源的信息从该窄带服务小区切换至该宽带服务小区继续该当前呼叫。
另外，本实施例中的核心网设备1700还可以包括存储器1704，存储器1704用于存储软件程序及缓存数据，收发器1701以及存储器1704通过总线1703与处理器1702通信连接。
本实施例的核心网设备1700还可以执行前述方法实施例的其他步骤，此处不再赘述。
本实施例中，处理器1702在接收到双模终端发送的请求后为该终端在宽带服务小区内分配无线资源，收发器1701将该无线资源的信息发送给该双模终端，从而使得该双模终端可能根据该无线资源的信息从窄带服务小区切换至宽带服务小区并利用该无线资源进行通话。通过上述方案，使得双模终端可以从窄带服务小区切换到宽带服务小区，继续保持呼叫，避免掉话。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，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。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元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全部或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。
以上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (44)

  1. 一种小区切换方法，其特征在于，包括：
    终端在窄带服务小区参与当前呼叫，所述终端在宽带服务小区及所述窄带服务小区均有注册；
    所述终端获取所述宽带服务小区中的所述当前呼叫的无线资源的信息；
    所述终端根据所述无线资源的信息从所述窄带服务小区切换至所述宽带服务小区并利用所述无线资源继续所述当前呼叫。
  2. 根据权利要求1所述的方法，其特征在于，所述终端获取所述宽带服务小区中存在的所述当前呼叫的无线资源的信息具体为：
    所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源；
    所述终端接收所述宽带服务小区对应的宽带集群基站发送的所述无线资源的信息。
  3. 根据权利要求2所述的方法，其特征在于，终端在窄带服务小区参与当前呼叫之后，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源之前，所述方法还包括：
    所述终端判断所述当前呼叫是否为组呼，若是，则所述终端接收所述宽带服务小区发送的广播信息；
    所述终端根据所述广播信息判断所述终端是否参与所述组呼，若否，则触发所述终端请求所述核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源。
  4. 根据权利要求2或3所述的方法，其特征在于，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源包括：
    所述终端通过所述宽带集群基站向所述宽带核心网发送小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的会话描述协议SDP，所述窄带服务小区的无线位置识别号LAI以及所述窄带服务小区的业务信道号，以使得所述宽带核心网向所述窄带服务小区归属的窄带核心网发送第三小区切换准备请求，所述第三小区切换准备请求包括所述号码，所述SDP，所述LAI以及所述业务信道号，并指示所述宽带集群基站根据所述号码，所述SDP和 所述呼叫上下文为所述当前呼叫分配无线资源，所述呼叫上下文由所述宽带核心网根据所述窄带核心网发送的呼叫身份标识ID查询得到，所述呼叫ID由所述窄带核心网根据所述LAI以及所述业务信道号查询得到。
  5. 根据权利要求2或3所述的方法，其特征在于，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源包括：
    所述终端通过所述窄带服务小区对应的窄带集群基站向所述窄带服务小区归属的窄带核心网发送小区切换请求，所述小区切换请求携带所述终端的号码和所述终端的SDP，以使得所述窄带核心网向所述宽带核心网发送第四小区切换准备请求，所述第四小区切换准备请求携带所述号码，所述SDP和所述当前呼叫的呼叫ID，所述呼叫ID用于所述宽带核心网查询所述当前呼叫的呼叫上下文，所述号码，所述SDP和所述呼叫上下文用于所述宽带核心网指示所述宽带集群基站为所述当前呼叫分配无线资源。
  6. 根据权利要求2或3所述的方法，其特征在于，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源包括：
    所述终端通过所述宽带服务小区对应的宽带集群基站向所述宽带服务小区归属的宽带核心网发送小区切换请求，以使得所述宽带核心网向所述窄带服务小区归属的窄带核心网发送第五小区切换准备请求，所述第五小区切换准备请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号，并指示所述宽带集群基站根据包括所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源，所述呼叫上下文由组归属窄带核心网根据呼叫ID查询并发送给所述宽带核心网，所述呼叫ID由所述窄带服务小区归属的窄带核心网根据所述LAI以及所述业务信道号查询并发送给所述组归属窄带核心网。
  7. 根据权利要求2或3所述的方法，其特征在于，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源包括：
    所述终端通过所述窄带服务小区归属的窄带集群基站向所述窄带服务小区归属的窄带核心网发送小区切换请求，所述小区切换请求包括所述终端的号码和所述终端的SDP，以使得所述窄带服务小区归属的窄带核心网查询所述当前呼叫的呼叫ID并发送给组归属窄带核心网，所述呼叫ID用于所述组归属窄 带核心网查询所述当前呼叫的呼叫上下文，所述号码，所述SDP和所述呼叫上下文用于所述宽带核心网指示所述宽带集群基站为所述当前呼叫分配无线资源。
  8. 根据权利要求2所述的方法，其特征在于，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源包括：
    所述终端判断所述当前呼叫是否为单呼；
    若所述当前呼叫是单呼，则所述终端通过所述宽带服务小区对应的宽带集群基站向所述宽带服务小区归属的宽带核心网发送小区切换请求，以使得所述宽带核心网向所述窄带服务小区归属的窄带核心网发送第一小区切换准备请求，所述第一小区切换准备请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI和所述窄带服务小区的业务信道号，并指示所述宽带集群基站根据所述号码，所述SDP和呼叫上下文为所述当前呼叫分配无线资源，所述呼叫上下文由所述窄带核心网根据所述LAI和所述业务信道号查询并发送给所述宽带核心网。
  9. 根据权利要求2所述的方法，其特征在于，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源包括：
    所述终端判断所述当前呼叫是否为单呼；
    若所述当前呼叫是单呼，则所述终端通过所述窄带服务小区对应的窄带集群基站向所述窄带服务小区归属的窄带核心网发送小区切换请求，以使得所述窄带核心网向所述宽带核心网发送第二小区切换准备请求，所述第二小区切换准备请求携带所述号码，所述SDP和所述当前呼叫的呼叫上下文，所述呼叫上下文信息由所述窄带核心网查询得到，所述号码，所述SDP和所述呼叫上下文用于所述宽带核心网指示所述宽带集群基站为所述当前呼叫分配无线资源。
  10. 根据权利要求2所述的方法，其特征在于，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源包括：
    所述终端通过所述宽带服务小区对应的宽带集群基站向所述统一融合核心网发送小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述业务信道号，以使得所述统一融合核 心网根据所述LAI以及所述业务信道号查询所述当前呼叫的呼叫上下文，并指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  11. 根据权利要求2所述的方法，其特征在于，所述终端请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源包括：
    所述终端通过所述窄带服务小区对应的窄带集群基站向所述统一融合核心网发送小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP，以使得所述统一融合核心网查询所述当前呼叫的呼叫上下文，并指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  12. 根据权利要求1所述的方法，其特征在于，所述终端获取所述宽带服务小区中的所述当前呼叫的无线资源的信息包括：
    所述终端判断所述当前呼叫是否为组呼，若是，则所述终端接收所述宽带服务小区发送的广播信息；
    所述终端根据所述广播信息判断所述终端是否参与所述组呼，若是，则所述终端接收所述宽带服务小区对应的宽带集群基站发送的所述当前呼叫的无线资源的信息。
  13. 一种终端，其特征在于，包括：
    呼叫模块，用于在窄带服务小区参与当前呼叫，所述终端在宽带服务小区及所述窄带服务小区均有注册；
    获取模块，用于获取所述宽带服务小区中的所述呼叫模块参与的所述当前呼叫的无线资源的信息；
    处理模块，用于根据所述获取模块获取得到的所述无线资源的信息从所述窄带服务小区切换至所述宽带服务小区并利用所述无线资源继续所述当前呼叫。
  14. 根据权利要求13所述的终端，其特征在于，所述获取模块包括：
    请求单元，用于请求核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源；
    第一获取单元，用于接收所述宽带服务小区对应的宽带集群基站发送的所 述无线资源的信息。
  15. 根据权利要求13所述的终端，其特征在于，所述获取模块还包括：
    第一判断单元，用于判断所述当前呼叫是否为组呼，若是，则所述终端接收所述宽带服务小区发送的广播信息；
    第二判断单元，用于根据所述第一判断单元所述广播信息判断所述终端是否参与所述组呼，若否，则触发请求所述核心网设备为所述当前呼叫在所述宽带服务小区分配无线资源。
  16. 根据权利要求14或15所述的终端，其特征在于，所述请求单元包括：
    第一处理子单元，用于通过所述宽带集群基站向所述宽带核心网发送小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号，以使得所述宽带核心网向所述窄带服务小区归属的窄带核心网发送第三小区切换准备请求，所述第三小区切换准备请求包括所述号码，所述SDP，所述LAI以及所述业务信道号，并指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源，所述呼叫上下文由所述宽带核心网根据所述窄带核心网发送的呼叫身份标识ID查询得到，所述呼叫ID由所述窄带核心网根据所述LAI以及所述业务信道号查询得到。
  17. 根据权利要求14或15所述的终端，其特征在于，所述请求单元包括：
    第二处理子单元，用于通过所述窄带服务小区对应的窄带集群基站向所述窄带服务小区归属的窄带核心网发送小区切换请求，所述小区切换请求携带所述终端的号码和所述终端的SDP，以使得所述窄带核心网向所述宽带核心网发送第四小区切换准备请求，所述第四小区切换准备请求携带所述号码，所述SDP和所述当前呼叫的呼叫身份标识ID，所述呼叫ID用于所述宽带核心网查询所述当前呼叫的呼叫上下文，所述号码，所述SDP和所述呼叫上下文用于所述宽带核心网指示所述宽带集群基站为所述当前呼叫分配无线资源。
  18. 根据权利要求14或15所述的终端，其特征在于，所述请求单元包括：
    第三处理子单元，用于通过所述宽带服务小区对应的宽带集群基站向所述宽带服务小区归属的宽带核心网发送小区切换请求，以使得所述宽带核心网向所述窄带服务小区归属的窄带核心网发送第五小区切换准备请求，所述第五小 区切换准备请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号，并指示所述宽带集群基站根据包括所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源，所述呼叫上下文由组归属窄带核心网根据呼叫ID查询并发送给所述宽带核心网，所述呼叫ID由所述窄带服务小区归属的窄带核心网根据所述LAI以及所述业务信道号查询并发送给所述组归属窄带核心网。
  19. 根据权利要求14或15所述的终端，其特征在于，所述请求单元包括：
    第四处理子单元，用于通过所述窄带服务小区归属的窄带集群基站向所述窄带服务小区归属的窄带核心网发送小区切换请求，所述小区切换请求包括所述终端的号码和所述终端的SDP，以使得所述窄带服务小区归属的窄带核心网查询所述当前呼叫的呼叫ID并发送给组归属窄带核心网，所述呼叫ID用于所述组归属窄带核心网查询所述当前呼叫的呼叫上下文，所述号码，所述SDP和所述呼叫上下文用于所述宽带核心网指示所述宽带集群基站为所述当前呼叫分配无线资源。
  20. 根据权利要求14所述的终端，其特征在于，所述请求单元包括：
    第一判断子单元，用于判断所述当前呼叫是否为单呼；
    第五处理子单元，用于若所述当前呼叫是单呼，则通过所述宽带服务小区对应的宽带集群基站向所述宽带服务小区归属的宽带核心网发送小区切换请求，以使得所述宽带核心网向所述窄带服务小区归属的窄带核心网发送第一小区切换准备请求，所述第一小区切换准备请求包括所述终端的号码，所述终端的会话描述协议SDP，所述窄带服务小区的无线位置识别号LAI和所述窄带服务小区的业务信道号，并指示所述宽带集群基站根据所述号码，所述SDP和呼叫上下文为所述当前呼叫分配无线资源，所述呼叫上下文由所述窄带核心网根据所述LAI和所述业务信道号查询并发送给所述宽带核心网。
  21. 根据权利要求14所述的终端，其特征在于，所述请求单元包括：
    第二判断子单元，用于判断所述当前呼叫是否为单呼；
    第六处理子单元，用于若所述当前呼叫是单呼，则通过所述窄带服务小区对应的窄带集群基站向所述窄带服务小区归属的窄带核心网发送小区切换请求，以使得所述窄带核心网向所述宽带核心网发送第二小区切换准备请求，所 述第二小区切换准备请求携带所述号码，所述SDP和所述当前呼叫的呼叫上下文，所述呼叫上下文信息由所述窄带核心网查询得到，所述号码，所述SDP和所述呼叫上下文用于所述宽带核心网指示所述宽带集群基站为所述当前呼叫分配无线资源。
  22. 根据权利要求14所述的终端，其特征在于，所述请求单元包括：
    第七处理子单元，用于通过所述宽带服务小区对应的宽带集群基站向所述统一融合核心网发送小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述业务信道号，以使得所述统一融合核心网根据所述LAI以及所述业务信道号查询所述当前呼叫的呼叫上下文，并指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  23. 根据权利要求14所述的终端，其特征在于，所述请求单元包括：
    第八处理子单元，用于通过所述窄带服务小区对应的窄带集群基站向所述统一融合核心网发送小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP，以使得所述统一融合核心网查询所述当前呼叫的呼叫上下文，并指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  24. 根据权利要求13所述的终端，其特征在于，所述获取模块还包括：
    第三判断单元，用于判断所述当前呼叫是否为组呼，若是，则所述终端接收所述宽带服务小区发送的广播信息；
    第四判断单元，用于根据所述广播信息判断所述终端是否参与所述组呼，若是，则接收所述宽带服务小区对应的宽带集群基站发送的所述组呼的无线资源的信息。
  25. 一种终端，其特征在于，包括：
    收发器，处理器和总线；
    所述收发器，所述处理器通过所述总线相连；
    所述收发器，用于执行如下指令：
    在窄带服务小区参与当前呼叫，所述终端在宽带服务小区及所述窄带服务小区均有注册；获取所述宽带服务小区中的所述呼叫模块参与的所述当前呼叫 的无线资源的信息；
    所述处理器，用于执行如下指令：
    根据所述获取模块获取得到的所述无线资源的信息从所述窄带服务小区切换至所述宽带服务小区并利用所述无线资源继续所述当前呼叫。
  26. 一种小区切换方法，其特征在于，包括：
    核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源，所述终端在窄带服务小区参与所述当前呼叫，所述终端在所述宽带服务小区及所述窄带服务小区均有注册；
    所述核心网设备将所述无线资源的信息发送给所述终端，以使得所述终端可以根据所述无线资源的信息从所述窄带服务小区切换至所述宽带服务小区继续所述当前呼叫。
  27. 根据权利要求26所述的方法，其特征在于，所述核心网设备为所述宽带服务小区归属的宽带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
    所述宽带核心网接收所述终端通过所述宽带集群基站发送的小区切换请求；
    所述宽带核心网向所述窄带服务小区归属的窄带核心网发送第一小区切换准备请求，所述第一小区切换准备请求包括所述终端的号码，所述终端的会话描述协议SDP，所述窄带服务小区的无线位置识别号LAI和所述窄带服务小区的业务信道号，以使得所述窄带核心网根据所述LAI和所述业务信道号查询所述当前呼叫的呼叫上下文；
    所述宽带核心网接收所述窄带核心网发送的第二小区切换准备请求，所述第二小区切换准备请求携带所述号码，所述SDP和所述呼叫上下文；
    所述宽带核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  28. 根据权利要求26所述的方法，其特征在于，所述核心网设备为所述窄带服务小区归属的窄带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
    所述窄带核心网接收所述终端通过所述窄带服务小区对应的窄带集群基 站发送的小区切换请求；
    所述窄带核心网向所述宽带核心网发送第三小区切换准备请求，所述第三小区切换准备请求携带所述终端的号码，所述终端的SDP和所述当前呼叫的呼叫上下文，所述呼叫上下文信息由所述窄带核心网查询得到，以使得所述宽带核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  29. 根据权利要求26所述的方法，其特征在于，所述核心网设备为统一融合核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
    所述统一融合核心网接收所述终端通过所述宽带服务小区对应的宽带集群基站发送的小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号；
    所述统一融合核心网根据所述LAI以及所述业务信道号查询所述当前呼叫的呼叫上下文；
    所述统一融合核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  30. 根据权利要求26所述的方法，其特征在于，所述核心网设备为统一融合核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
    所述统一融合核心网接收所述终端通过所述窄带服务小区对应的窄带集群基站发送的小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP；
    所述统一融合核心网查询所述当前呼叫的呼叫上下文；
    所述统一融合核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  31. 根据权利要求26所述的方法，其特征在于，所述核心网设备为所述宽带服务小区归属的宽带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
    所述宽带核心网接收所述终端通过所述宽带集群基站发送的小区切换请 求，所述小区切换请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号；
    所述宽带核心网向所述窄带服务小区归属的窄带核心网发送第四小区切换准备请求，所述第四小区切换准备请求包括所述号码，所述SDP，所述LAI以及所述业务信道号，以使得所述窄带核心网根据所述LAI以及所述业务信道号查询所述当前呼叫的呼叫身份标识ID；
    所述宽带核心网接收所述窄带核心网发送的第五小区切换准备请求，所述第五小区切换准备请求携带所述号码，所述SDP和所述呼叫ID；
    所述宽带核心网根据所述呼叫ID查询所述当前呼叫的呼叫上下文；
    所述宽带核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  32. 根据权利要求26所述的方法，其特征在于，所述核心网设备为所述窄带服务小区归属的窄带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
    所述窄带核心网接收所述终端通过所述窄带服务小区对应的窄带集群基站发送的小区切换请求，所述小区切换请求携带所述终端的号码和所述终端的SDP；
    所述窄带核心网向所述宽带服务小区归属的宽带核心网发送第六小区切换准备请求，所述第六小区切换准备请求携带所述号码，所述SDP和所述当前呼叫的呼叫身份标识ID，以使得所述宽带核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源，所述呼叫上下文为所述宽带核心网根据所述呼叫ID查询所述当前呼叫得到。
  33. 根据权利要求26所述的方法，其特征在于，所述核心网设备为所述宽带服务小区归属的宽带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
    所述宽带核心网接收所述终端通过所述宽带服务小区对应的宽带集群基站发送的小区切换请求；
    所述宽带核心网向所述窄带服务小区归属的窄带核心网发送所述第七小区切换准备请求，所述第七小区切换准备请求包括所述终端的号码，所述终端 的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号，以使得所述窄带服务小区归属的窄带核心网向组归属窄带核心网发送第八小区切换准备请求，所述第八小区切换准备请求包括所述号码，所述SDP和呼叫ID，所述呼叫ID由所述窄带服务小区归属的窄带核心网根据所述LAI以及所述业务信道号查询得到；
    所述宽带核心网接收所述组归属窄带核心网发送的第九小区切换准备请求，所述第九小区切换准备请求包括所述号码，所述SDP和呼叫上下文，所述呼叫上下文由所述组归属窄带核心网根据所述呼叫ID查询得到；
    所述宽带核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  34. 根据权利要求26所述的方法，其特征在于，所述核心网设备为所述窄带服务小区归属的窄带核心网时，核心网设备接收终端的请求为当前呼叫在宽带服务小区分配无线资源包括：
    所述窄带服务小区归属的窄带核心网接收所述终端通过所述窄带服务小区归属的窄带集群基站发送的小区切换请求，所述小区切换请求包括所述终端的号码和所述终端的SDP；
    所述窄带服务小区归属的窄带核心网查询所述当前呼叫的呼叫ID；
    所述窄带服务小区归属的窄带核心网向组归属窄带核心网发送第十小区切换准备请求，所述第十小区切换准备请求携带所述终端的号码，所述终端的SDP和所述呼叫ID，以使得所述组归属窄带核心网向所述宽带服务小区归属的宽带核心网发送第十一小区切换准备请求，所述第十一小区切换准备请求包括所述号码，所述SDP和所述呼叫上下文，所述呼叫上下文由所述组归属窄带核心网根据所述呼叫ID查询得到，所述号码，所述SDP和所述呼叫上下文用于所述宽带核心网指示所述宽带集群基站为所述当前呼叫分配无线资源。
  35. 一种核心网设备，其特征在于，包括：
    分配模块，用于接收终端的请求为当前呼叫在宽带服务小区分配无线资源，所述终端在窄带服务小区参与所述当前呼叫，所述终端在所述宽带服务小区及所述窄带服务小区均有注册；
    发送模块，用于将所述无线资源的信息发送给所述终端，以使得所述终端 可以根据所述无线资源的信息从所述窄带服务小区切换至所述宽带服务小区继续所述当前呼叫。
  36. 根据权利要求35的所述的核心网设备，其特征在于，所述核心网设备为所述宽带服务小区归属的宽带核心网时，所述分配模块包括：
    第一接收单元，用于接收所述终端通过所述宽带集群基站发送的小区切换请求；
    第一发送单元，用于向所述窄带服务小区归属的窄带核心网发送第一小区切换准备请求，所述第一小区切换准备请求包括所述终端的号码，所述终端的会话描述协议SDP，所述窄带服务小区的无线位置识别号LAI和所述窄带服务小区的业务信道号，以使得所述窄带核心网根据所述LAI和所述业务信道号查询所述当前呼叫的呼叫上下文；
    第二接收单元，用于接收所述窄带核心网发送的第二小区切换准备请求，所述第二小区切换准备请求携带所述号码，所述SDP和所述呼叫上下文；
    第一分配单元，用于指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  37. 根据权利要求35的所述的核心网设备，其特征在于，所述核心网设备为所述窄带服务小区归属的窄带核心网时，所述分配模块包括：
    第三接收单元，用于接收所述终端通过所述窄带服务小区对应的窄带集群基站发送的小区切换请求；
    第二发送单元，用于向所述宽带核心网发送第三小区切换准备请求，所述第三小区切换准备请求携带所述终端的号码，所述终端的SDP和所述当前呼叫的呼叫上下文，所述呼叫上下文信息由所述窄带核心网查询得到，以使得所述宽带核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  38. 根据权利要求35的所述的核心网设备，其特征在于，所述核心网设备为统一融合核心网时，所述分配模块包括：
    第四接收单元，用于接收所述终端通过所述宽带服务小区对应的宽带集群基站发送的小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号；
    第一查询单元，用于根据所述LAI以及所述业务信道号查询所述当前呼叫的呼叫上下文；
    第二分配单元，用于指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  39. 根据权利要求35的所述的核心网设备，其特征在于，所述核心网设备为统一融合核心网时，所述分配模块包括：
    第五接收单元，用于接收所述终端通过所述窄带服务小区对应的窄带集群基站发送的小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP；
    第二查询单元，用于查询所述当前呼叫的呼叫上下文；
    第三分配单元，用于指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  40. 根据权利要求35的所述的核心网设备，其特征在于，所述核心网设备为所述宽带服务小区归属的宽带核心网时，所述分配模块包括：
    第六接收单元，用于接收所述终端通过所述宽带集群基站发送的小区切换请求，所述小区切换请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号；
    第三发送单元，用于向所述窄带服务小区归属的窄带核心网发送第四小区切换准备请求，所述第四小区切换准备请求包括所述号码，所述SDP，所述LAI以及所述业务信道号，以使得所述窄带核心网根据所述LAI以及所述业务信道号查询所述当前呼叫的呼叫身份标识ID；
    第七接收单元，用于接收所述窄带核心网发送的第五小区切换准备请求，所述第五小区切换准备请求携带所述号码，所述SDP和所述呼叫ID；
    第三查询单元，用于根据所述呼叫ID查询所述当前呼叫的呼叫上下文；
    第四分配单元，用于指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  41. 根据权利要求35的所述的核心网设备，其特征在于，所述核心网设备为所述窄带服务小区归属的窄带核心网时，所述分配模块包括：
    第八接收单元，用于接收所述终端通过所述窄带服务小区对应的窄带集群 基站发送的小区切换请求，所述小区切换请求携带所述终端的号码和所述终端的SDP；
    第四发送单元，用于向所述宽带服务小区归属的宽带核心网发送第六小区切换准备请求，所述第六小区切换准备请求携带所述号码，所述SDP和所述当前呼叫的呼叫身份标识ID，以使得所述宽带核心网指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源，所述呼叫上下文为所述宽带核心网根据所述呼叫ID查询所述当前呼叫得到。
  42. 根据权利要求35的所述的核心网设备，其特征在于，所述核心网设备为所述宽带服务小区归属的宽带核心网时，所述分配模块包括：
    第九接收单元，用于接收所述终端通过所述宽带服务小区对应的宽带集群基站发送的小区切换请求；
    第五发送单元，用于向所述窄带服务小区归属的窄带核心网发送所述第七小区切换准备请求，所述第七小区切换准备请求包括所述终端的号码，所述终端的SDP，所述窄带服务小区的LAI以及所述窄带服务小区的业务信道号，以使得所述窄带服务小区归属的窄带核心网向组归属窄带核心网发送第八小区切换准备请求，所述第八小区切换准备请求包括所述号码，所述SDP和呼叫ID，所述呼叫ID由所述窄带服务小区归属的窄带核心网根据所述LAI以及所述业务信道号查询得到；
    第十接收单元，用于接收所述组归属窄带核心网发送的第九小区切换准备请求，所述第九小区切换准备请求包括所述号码，所述SDP和呼叫上下文，所述呼叫上下文由所述组归属窄带核心网根据所述呼叫ID查询得到；
    第五分配单元，用于指示所述宽带集群基站根据所述号码，所述SDP和所述呼叫上下文为所述当前呼叫分配无线资源。
  43. 根据权利要求35的所述的核心网设备，其特征在于，所述核心网设备为所述窄带服务小区归属的窄带核心网时，所述分配模块包括：
    第十一接收单元，用于接收所述终端通过所述窄带服务小区归属的窄带集群基站发送的小区切换请求，所述小区切换请求包括所述终端的号码和所述终端的SDP；
    第四查询单元，用于查询所述当前呼叫的呼叫ID；
    第六发送单元，用于向组归属窄带核心网发送第十小区切换准备请求，所述第十小区切换准备请求携带所述终端的号码，所述终端的SDP和所述呼叫ID，以使得所述组归属窄带核心网向所述宽带服务小区归属的宽带核心网发送第十一小区切换准备请求，所述第十一小区切换准备请求包括所述号码，所述SDP和所述呼叫上下文，所述呼叫上下文由所述组归属窄带核心网根据所述呼叫ID查询得到，所述号码，所述SDP和所述呼叫上下文用于所述宽带核心网指示所述宽带集群基站为所述当前呼叫分配无线资源。
  44. 一种核心网设备，其特征在于，包括：
    收发器，处理器和总线；
    所述收发器与所述处理器通过所述总线相连；
    所述处理器，用于执行如下指令：接收终端的请求为当前呼叫在宽带服务小区分配无线资源，所述终端在窄带服务小区参与所述当前呼叫，所述终端在所述宽带服务小区及窄带服务小区均注册；
    所述收发器，用于执行如下指令：将所述处理模块获取到的所述无线资源的信息发送给所述终端，以使得所述终端可以根据所述无线资源的信息从所述窄带服务小区切换至所述宽带服务小区继续所述当前呼叫。
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CN115460179A (zh) * 2022-09-19 2022-12-09 青岛海信电子设备股份有限公司 移动通信网络的呼叫控制方法、装置、电子设备和介质

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