WO2017193387A1 - 异制式小区间切换的方法及装置 - Google Patents

异制式小区间切换的方法及装置 Download PDF

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Publication number
WO2017193387A1
WO2017193387A1 PCT/CN2016/082089 CN2016082089W WO2017193387A1 WO 2017193387 A1 WO2017193387 A1 WO 2017193387A1 CN 2016082089 W CN2016082089 W CN 2016082089W WO 2017193387 A1 WO2017193387 A1 WO 2017193387A1
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Prior art keywords
network device
access network
terminal
heterogeneous cell
cell
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Ceased
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PCT/CN2016/082089
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English (en)
French (fr)
Inventor
彭文杰
张宏卓
石小丽
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Priority to CN201680085493.0A priority Critical patent/CN109076405B/zh
Priority to EP16901342.2A priority patent/EP3451739B1/en
Priority to BR112018073288-5A priority patent/BR112018073288A2/pt
Priority to PCT/CN2016/082089 priority patent/WO2017193387A1/zh
Publication of WO2017193387A1 publication Critical patent/WO2017193387A1/zh
Priority to US16/188,888 priority patent/US10750422B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/087—Reselecting an access point between radio units of access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for switching between heterogeneous cells.
  • the plurality of heterogeneous networks correspond to a plurality of heterogeneous cells.
  • the terminal accessing the cell may move from one standard cell to another in the mobile process.
  • the cell moves from the cell of the WCDMA network to the cell of the LTE network. Therefore, in order to ensure that the terminal can continue to maintain the access state during the mobile process, it is necessary to switch the terminal between the heterogeneous cells.
  • the network architecture includes multiple types of core networks, and each type of core network can only support one type of system cell, for example, the LTE core network can only support the cells of the LTE network, and therefore, if the terminal is in two different types of cells. In the case of inter-switching, the core network of the two heterogeneous cells is required to be implemented.
  • the specific implementation process includes: if the terminal moves from the source cell to the target cell, the source core network sends a handover request message to the target core network, and the target core network receives After the handover request message, the resource is prepared for the terminal, and then the target core network sends a handover response message to the source core network, where the handover response message is used to indicate that the target core network has prepared resources, and the handover response is The message carries the configuration information corresponding to the resource, and after receiving the handover response message, the source core network sends a handover command to the terminal by using the source base station, where the handover command carries the configuration information, and after receiving the handover command, the terminal receives the handover command. Switching to the target cell based on the configuration information, thereby implementing handover between heterogeneous cells.
  • the inventor has found that the prior art has at least the following problem: if the terminal switches in two heterogeneous cells, the handover process needs to cross the core network, and a large number of letters exist between the source core network and the target core network. The interaction causes the switching delay to be large.
  • an embodiment of the present invention provides a method and apparatus for switching between heterogeneous cells.
  • the technical solution is as follows:
  • a method for heterogeneous inter-cell handover comprising:
  • the radio access network RAN server receives the measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • the RAN server sends a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell, and the handover command carries the identifier of the target heterogeneous cell and the configured resource.
  • the handover command is used to indicate that the terminal switches to the target heterogeneous cell, and the handover command carries the identifier of the target heterogeneous cell and the configured resource.
  • the RAN server is configured to manage a serving cell of the terminal and the target heterogeneous cell, where the serving cell adopts a communication system different from that used by the target heterogeneous cell.
  • the RAN server after receiving the measurement report sent by the terminal, determines, according to the measurement report, a target heterogeneous cell, where the RAN server configures resources for the terminal in the target heterogeneous cell, and configures the resource.
  • the information of the resource and the identifier of the target heterogeneous cell are sent to the terminal, so that the terminal switches to the target heterogeneous cell, so that when switching between heterogeneous cells, there is no need to cross the core network, and the source core is reduced. Signaling interaction between the network and the target core network.
  • the method before the RAN server sends the handover command to the terminal, the method further includes:
  • the RAN server sends the information of the configured resource to the access station to which the target heterogeneous cell belongs, so that the access station to which the target heterogeneous cell belongs is based on the information of the configured resource.
  • the configuration is such that the terminal can access the access station, that is, access to the target heterogeneous cell.
  • the method further includes:
  • system indication message carries the identifier of the terminal and the standard information of the target heterogeneous cell, and the system information is used to indicate a communication standard adopted by the target heterogeneous cell.
  • the RAN server after the RAN server sends the handover command to the terminal, the RAN server further sends a standard indication message to the core network device, so that the core network device can perform further operations based on the standard indication message, such as changing the calculation of the terminal. Fee strategy and security mechanisms, etc., thus ensuring the integrity of the handover between heterogeneous cells.
  • a method for switching between heterogeneous cells comprising:
  • the first access network device Receiving, by the first access network device, a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • the handover request message is used to request the second access network device to configure a resource for the terminal in the target heterogeneous cell, where the handover request message carries the identifier of the terminal and the target heterogeneous An identifier of the cell, where the configured resource is a resource used by the terminal to access the target heterogeneous cell;
  • the first access network device sends a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell, and the handover command carries the identifier and location of the target heterogeneous cell.
  • Information about the configured resources is used to indicate that the terminal switches to the target heterogeneous cell, and the handover command carries the identifier and location of the target heterogeneous cell.
  • the communication system adopted by the serving cell is different from the communication system adopted by the target heterogeneous cell.
  • the first connection The network access device sends a handover request message to the second access network device by using a communication interface between the first access network device and the second access network device to which the target heterogeneous cell belongs, so that the second access The network device allocates resources in the target heterogeneous cell for the terminal, and returns information of the configured resources to the first access network device, and then sends the configured resource information by the first access network device.
  • the terminal enables the terminal to access the target heterogeneous cell, and does not need to cross the core network in the heterogeneous cell handover process, thereby reducing signaling interaction between the source core network and the target core network.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the first access network device and the second access network device may both be RAN servers or all base stations, which increases the applicability of the heterogeneous inter-cell handover.
  • the method further includes:
  • the sequence number state transition message carries a sequence number of a data packet that is not successfully sent to the terminal, and is lost during transmission
  • the sequence number of the data packet that is not successfully sent to the terminal is used by the second access network device to resend the data packet that is not successfully sent to the terminal a data packet corresponding to the serial number
  • the sequence number of the lost data packet in the transmission process is used by the second access network device to request the terminal to resend the data corresponding to the sequence number of the lost data packet in the transmission process package.
  • the first access network device sends a sequence number state transition message to the second access network device, so that when the sequence number state transition message includes the When the sequence number of the data packet that is not successfully sent to the terminal, the second access network device resends the data packet corresponding to the sequence number of the data packet that was not successfully sent to the terminal, when the sequence number state transition message includes The second access network device requests the terminal to resend the corresponding data packet when the sequence number of the lost data packet is lost, and the sequence number state transition message includes the sequence of the data packet that is not successfully sent to the terminal.
  • the second access network device resends the data packet corresponding to the sequence number of the data packet that was not successfully sent to the terminal, and requests the terminal to resend the corresponding data when the serial number of the lost data packet is lost during the transmission. Packet, in this way, the loss of data packets can be minimized during the handover process, thereby improving the reliability of data transmission.
  • the method before the receiving, by the first access network device, the measurement report sent by the terminal, the method further includes:
  • each other when establishing a communication connection between the first access network device and the second access network device, each other exchanges its own device identifier, cell identity and communication of all cells managed by itself.
  • the system information is such that the first access network device can determine the second access network device to which the target heterogeneous cell belongs based on the determined identifier of the target heterogeneous cell.
  • a method for switching between heterogeneous cells comprising:
  • the second access network device receives the handover request message sent by the first access network device, where the handover request message carries the identifier of the terminal and the identifier of the target heterogeneous cell, where the first access network device is the service of the terminal Access network equipment to which the cell belongs;
  • the second access network device allocates resources in the target heterogeneous cell for the terminal according to the handover request message
  • the second access network device sends a handover response message to the first access network device, where the handover response message carries information about the configured resource;
  • the communication system adopted by the serving cell is different from the communication system adopted by the target heterogeneous cell.
  • the terminal is in the target different
  • the resource is configured in the system, and the information of the configured resource is sent to the first access network device, so that the first access network device obtains information about the configured resource, and configures the resource.
  • the information and the identifier of the target heterogeneous cell are sent to the terminal, so that the terminal switches to the target heterogeneous cell.
  • the source core network and the target core network are reduced without crossing the core network. Signaling interaction between.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the first access network device and the second access network device may both be RAN servers or all base stations, which increases the applicability of the heterogeneous inter-cell handover.
  • the second access network device sends a path switch request message to the core network device, where the path switch request message carries the format information of the target heterogeneous cell, where the standard information is used to indicate the The communication system adopted by the target heterogeneous cell;
  • the second access network device Receiving, by the second access network device, a path switch response message sent by the core network device, where the path switch response message carries data channel information, where the data channel information is used to indicate that the core network device is transmitted and The channel of data between terminals.
  • the path for transmitting data between the core network device and the terminal also changes, that is, the original Transmitting, by the first access network device, data between the core network device and the terminal, and changing, by using the second access network device, data between the core network device and the terminal, and therefore, the second access network
  • the device sends a path switch request message to the core network, so that the core network device establishes a data channel with the second access network device.
  • the path switching request message carries the standard information of the target heterogeneous cell, so that the core network device can perform further processing based on the standard information of the target heterogeneous cell, for example, changing the charging of the terminal. Strategy, etc.
  • the second access network device sends the information of the configured resource to the target access station to which the target heterogeneous cell belongs, so that the target access station performs resource configuration based on the information of the configured resource.
  • the second access network device sends the configured resource information to the target access station to which the target heterogeneous cell belongs, so that the target access site to which the target heterogeneous cell belongs is configured based on the configured
  • the resource information is configured to enable the terminal to access the target heterogeneous cell.
  • the method further includes:
  • the second access network device resends the sequence of the data packet that is not successfully sent to the terminal The corresponding packet of the number; and/or,
  • the second access network device sends a retransmission request message, where the retransmission request message is used to request the terminal to resend the data packet corresponding to the sequence number of the lost data packet in the transmission process.
  • the second access network device in the process of switching between heterogeneous cells, receives the first access network device to send a sequence number state transition message, so that when the sequence number state transition message includes the When the sequence number of the data packet that is not successfully sent to the terminal, the second access network device resends the data packet corresponding to the sequence number of the data packet that was not successfully sent to the terminal, when the sequence number state transition message includes The second access network device requests the terminal to resend the corresponding data packet when the sequence number of the lost data packet is lost, and the sequence number state transition message includes the sequence of the data packet that is not successfully sent to the terminal.
  • the second access network device resends the data packet corresponding to the sequence number of the data packet that was not successfully sent to the terminal, and requests the terminal to resend the corresponding data when the serial number of the lost data packet is lost during the transmission. Packet, in this way, the loss of data packets can be minimized during the handover process, thereby improving the reliability of data transmission.
  • ,Also before the second access network device receives the handover request message sent by the first access network device, ,Also includes:
  • each other when establishing a communication connection between the first access network device and the second access network device, each other exchanges its own device identifier, cell identity and communication of all cells managed by itself.
  • the system information is such that the first access network device can determine the second access network device to which the target heterogeneous cell belongs based on the determined identifier of the target heterogeneous cell.
  • a radio access network RAN server including:
  • a receiving module configured to receive a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • a determining module configured to determine, according to the measurement report that is received by the receiving module, a target heterogeneous cell of the terminal, and configure a resource for the terminal in the target heterogeneous cell, where the configured resource is Describe the resources used by the terminal to access the target heterogeneous cell;
  • a sending module configured to send a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell determined by the determining module, where the handover command carries the target heterogeneous cell Identifying and information about the configured resources;
  • the RAN server is configured to manage a serving cell of the terminal and the target heterogeneous cell, where the serving cell adopts a communication system different from that used by the target heterogeneous cell.
  • the sending module is further configured to:
  • the sending module is further configured to:
  • system indication message carries the identifier of the terminal and the standard information of the target heterogeneous cell, and the system information is used to indicate a communication standard adopted by the target heterogeneous cell.
  • a fifth aspect of the present invention provides a first access network device, including:
  • a first receiving module configured to receive a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • a determining module configured to determine, by the first receiving module, a target heterogeneous cell of the terminal according to the measurement report;
  • a first sending module configured to send, by the first access network device, a communication interface between the second access network device to which the target heterogeneous cell belongs, determined by the determining module, to the second access
  • the network device sends a handover request message, where the handover request message is used to request the second access network device to configure resources for the terminal in the target heterogeneous cell, where the handover request message carries the identifier of the terminal and An identifier of the target heterogeneous cell, where the configured resource is a resource used by the terminal to access the target heterogeneous cell;
  • a second receiving module configured to receive, by using the communications interface, a handover response message sent by the second access network device, where the handover response message carries information about the configured resource;
  • a second sending module configured to send a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell, where the handover command carries the identifier of the target heterogeneous cell and the Information of the configured resource received by the second receiving module;
  • the communication system adopted by the serving cell is different from the communication system adopted by the target heterogeneous cell.
  • the first access network And the second access network device is a radio access network RAN server; or
  • the first access network device and the second access network device are both base stations.
  • the second sending module is further configured to:
  • sequence number state transition message carries a sequence number of a data packet that is not successfully sent to the terminal, and at least a sequence number of a data packet that is lost during transmission a sequence number of the data packet that is not successfully sent to the terminal, where the second access network device retransmits the data packet corresponding to the sequence number of the data packet that is not successfully sent to the terminal, where The sequence number of the lost data packet in the transmission process is used by the second access network device to request the terminal to resend the data packet corresponding to the sequence number of the lost data packet in the transmission process.
  • the first receiving module is further configured to establish the first access network device and the second Receiving, by the second access network device, the device identifier of the second access network device and the cell identifier of all cells managed by the second access network device And communication standard information.
  • a second access network device including:
  • a receiving module configured to receive a handover request message sent by the first access network device, where the handover request message carries an identifier of the terminal and an identifier of the target heterogeneous cell, where the first access network device is a serving cell where the terminal is located The access network device to which it belongs;
  • a configuration module configured to configure, according to the handover request message received by the receiving module, a resource in the target heterogeneous cell for the terminal;
  • a sending module configured to send a handover response message to the first access network device, where the handover response message carries information about resources configured by the configuration module;
  • the communication system adopted by the serving cell is different from the communication system adopted by the target heterogeneous cell.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the sending module is further configured to send a path switching request message to the core network device, where the path switching request message is Carrying the standard information of the target heterogeneous cell, where the standard information is used to refer to Displaying a communication system adopted by the target heterogeneous cell;
  • the receiving module is further configured to receive a path switch response message sent by the core network device, where the path switch response message carries data channel information, where the data channel information is used to indicate that the core network device is transmitted and The channel of data between terminals.
  • the sending module is further configured to:
  • the receiving module is further configured to receive a sequence number state transition message sent by the first access network device
  • the sequence number state transition message carries at least one of a sequence number of a data packet that is not successfully sent to the terminal and a sequence number of a data packet that is lost during transmission;
  • the sending module is further configured to: when the sequence number state transition message received by the receiving module carries the sequence number of the data packet that is not successfully sent to the terminal, resend the unsuccessfully sent to the terminal The data packet corresponding to the serial number of the data packet;
  • the sending module is further configured to: when the serial number state transition message received by the receiving module carries the sequence number of the lost data packet in the transmitting process, send a retransmission request message, where the retransmission request message is used by And requesting the terminal to resend the data packet corresponding to the serial number of the lost data packet in the transmission process.
  • the sending module is further configured to:
  • Sending, by the first access network device, a device identifier and a device identifier of the second access network device when establishing a communication connection between the first access network device and the second access network device The cell identity and communication system information of all cells managed by the second access network device.
  • a radio access network RAN server comprising a transmitter, a receiver, and a processor respectively coupled to the transmitter and the receiver:
  • the receiver is configured to receive a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • the processor is configured to determine, according to the measurement report received by the receiver, a target heterogeneous cell of the terminal, and configure resources for the terminal in the target heterogeneous cell, where the configured resource a resource used when the terminal accesses the target heterogeneous cell;
  • the transmitter is configured to send a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell determined by the processor, and the handover command carries the target heterogeneous Information of the identity of the cell and the resources of the configuration;
  • the RAN server is configured to manage a serving cell of the terminal and the target heterogeneous cell, where the serving cell adopts a communication system different from that used by the target heterogeneous cell.
  • the transmitter is further configured to:
  • the transmitter is further configured to:
  • system indication message carries the identifier of the terminal and the standard information of the target heterogeneous cell, and the system information is used to indicate a communication standard adopted by the target heterogeneous cell.
  • a first access network device comprising a transmitter, a receiver, and a processor respectively connected to the transmitter and the receiver:
  • the receiver is configured to receive a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • the processor is configured to determine, according to the measurement report received by the receiver, a target heterogeneous cell of the terminal;
  • the transmitter is configured to send, by the first access network device, a communication interface between a second access network device to which the target heterogeneous cell belongs, and the second access
  • the network device sends a handover request message, where the handover request message is used to request the second access network device to configure resources for the terminal in the target heterogeneous cell, where the handover request message carries the identifier of the terminal and An identifier of the target heterogeneous cell, where the configured resource is a resource used by the terminal to access the target heterogeneous cell;
  • the receiver is further configured to receive, by using the communications interface, a handover response message sent by the second access network device, where the handover response message carries information about the configured resource;
  • the transmitter is further configured to send a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell, and the handover command carries an identifier and a location of the target heterogeneous cell.
  • the communication system adopted by the serving cell is different from the communication system adopted by the target heterogeneous cell.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the transmitter is further configured to:
  • sequence number state transition message carries a sequence number of a data packet that is not successfully sent to the terminal, and at least a sequence number of a data packet that is lost during transmission a sequence number of the data packet that is not successfully sent to the terminal, where the second access network device retransmits the data packet corresponding to the sequence number of the data packet that is not successfully sent to the terminal, where The sequence number of the lost data packet in the transmission process is used by the second access network device to request the terminal to resend the data packet corresponding to the sequence number of the lost data packet in the transmission process.
  • the receiver is further configured to:
  • a second access network device comprising a transmitter, a receiver, and a processor respectively connected to the transmitter and the receiver:
  • the receiver is configured to receive a handover request message sent by the first access network device, where the handover request message carries an identifier of the terminal and an identifier of the target heterogeneous cell, where the first access network device is the terminal An access network device to which the serving cell belongs;
  • the processor is configured to configure, according to the handover request message received by the receiver, a resource in the target heterogeneous cell for the terminal;
  • the transmitter is configured to send a handover response message to the first access network device, where the handover response message carries information about resources configured by the processor;
  • the communication system adopted by the serving cell is different from the communication system adopted by the target heterogeneous cell.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the transmitter is further configured to send a path switching request message to the core network device, where the path switching request is The message carries the standard information of the target heterogeneous cell, where the standard information is used to indicate a communication standard adopted by the target heterogeneous cell;
  • the receiver is further configured to receive a path switch response message sent by the core network device, where the path switch response message carries data channel information, where the data channel information is used to indicate that the core network device is transmitted and The channel of data between terminals.
  • the transmitter is further configured to:
  • the receiver is further configured to receive a sequence number state transition sent by the first access network device a message, the sequence number state transition message carries at least one of a sequence number of a data packet that is not successfully sent to the terminal, and a sequence number of a data packet that is lost during transmission;
  • the transmitter is further configured to: when the sequence number state transition message received by the receiver carries the sequence number of the data packet that is not successfully sent to the terminal, resend the unsuccessfully sent to the a packet corresponding to the serial number of the data packet of the terminal; and/or,
  • the transmitter is further configured to: when the sequence number state transition message received by the receiver carries a sequence number of a data packet lost in the transmitting process, send a retransmission request message, where the retransmission request message is used by And requesting the terminal to resend the data packet corresponding to the serial number of the lost data packet in the transmission process.
  • the transmitter is further configured to:
  • the technical solution provided by the embodiment of the present invention has the beneficial effects that, in the process of the inter-cell handover, the RAN server determines the target heterogeneous cell of the terminal according to the measurement report reported by the terminal, that is, determines that the terminal is ready to access.
  • Adjacent heterogeneous cell after which the RAN server is in the terminal Configuring a resource in the target heterogeneous cell, and transmitting the information of the configured resource and the identifier of the target heterogeneous cell to the terminal, so that the terminal switches to the target heterogeneous cell, because the heterogeneous cell is in the There is no need to cross the core network during the handover process, thus reducing the signaling interaction between the source core network and the target core network.
  • FIG. 1A is a schematic diagram of a network architecture according to an exemplary embodiment.
  • FIG. 1B is a schematic diagram of an implementation environment according to the embodiment of FIG. 1A.
  • FIG. 1C is a flowchart of a heterogeneous inter-cell handover method according to an exemplary embodiment.
  • FIG. 2 is a flowchart of a heterogeneous inter-cell handover method according to another exemplary embodiment.
  • FIG. 3 is a flowchart of a heterogeneous inter-cell handover method according to another exemplary embodiment.
  • FIG. 4 is a flowchart of a heterogeneous inter-cell handover method according to another exemplary embodiment.
  • FIG. 5A is a flowchart of a heterogeneous inter-cell handover method according to another exemplary embodiment.
  • FIG. 5B is a schematic diagram of an implementation environment involved in the embodiment of FIG. 5A.
  • FIG. 6 is a schematic structural diagram of a RAN server according to an exemplary embodiment.
  • FIG. 7 is a schematic structural diagram of a first access network device according to an exemplary embodiment.
  • FIG. 8 is a schematic structural diagram of a second access network device according to an exemplary embodiment.
  • FIG. 9 is a schematic structural diagram of a RAN server 900 according to another exemplary embodiment.
  • FIG. 10 is a schematic structural diagram of a first access network device 1000 according to another exemplary embodiment.
  • FIG. 11 is a schematic structural diagram of a second access network device 1100 according to another exemplary embodiment.
  • FIG. 12 is a block diagram of a system, according to an exemplary embodiment.
  • FIG. 13 is a system block diagram showing according to another exemplary embodiment.
  • FIG. 1A is a schematic diagram of a network architecture including a core network (CN) 001, at least one central unit (CU) 002, and at least one distribution unit, according to an exemplary embodiment.
  • the CU002 can provide a high-level protocol stack, and the DU003 can provide an underlying protocol stack.
  • the Long Term Evolution (LTE) protocol can be used as an example.
  • the CU002 can include a Radio Resource Control (RRC) layer and a packet data convergence protocol.
  • RRC Radio Resource Control
  • the DU003 may include a Radio Link Control (RLC) layer, a Media Access Control (MAC) layer, and a physical layer.
  • RLC Radio Link Control
  • MAC Media Access Control
  • the protocol layer division between the CU002 and the DU 003 may also be in other manners, which is not limited in the embodiment of the present invention.
  • the at least one DU 003 may be an access site of at least one system, and the heterogeneous inter-cell handover method in the embodiment of the present invention may be implemented based on the network architecture.
  • FIG. 1B is a schematic diagram of an implementation environment according to the embodiment of FIG. 1A.
  • the implementation environment includes a core network device 110, at least one Radio Access Network (RAN) server 120, and at least one standard access site 130.
  • the core network device 110 is connected to the at least one RAN server 120, that is, the core network 110 device is used to manage the at least one RAN server 120.
  • RAN Radio Access Network
  • a standard access site may be deployed in the RAN server 120.
  • the access site of the one format may include only a New Radio Access Technology (NR) site.
  • NR New Radio Access Technology
  • the RAN server 120 and the NR station are equivalent to one NR base station.
  • a plurality of heterogeneous access sites may be deployed under the RAN server 120, and the communication systems adopted by the multiple heterogeneous access sites are different.
  • the multiple heterogeneous access sites may include LTE.
  • the station, the NR station, and the Wireless Fidelity Access Point (WiFi AP) can access the cell in the network through the access station.
  • WiFi AP Wireless Fidelity Access Point
  • LTE Long Term Evolution
  • NR is compared with LTE. It can provide shorter latency, greater bandwidth, and the ability to support a large number of connections to meet the growing demand for mobile communications.
  • the exemplary implementation environment shown in FIG. 1B can be regarded as a special case in the network architecture shown in FIG. 1A, that is, CN001 in FIG. 1A is equivalent.
  • CU002 is equivalent to the RAN server 120 in FIG. 1B
  • DU003 in FIG. 1A is equivalent to one of the standard access stations 130 in FIG. 1B.
  • the terminal needs to interact with the RAN server 120 through the access site, that is, the terminal first sends the communication data to the access site, and then the access is performed.
  • the RN server 120 is forwarded to the RAN server 120.
  • the RAN server 120 also needs to interact with the terminal through the access site.
  • the description of the process is omitted in the embodiment of the present invention, that is, in this embodiment. The description is made in such a manner that the terminal directly interacts with the RAN server 120.
  • FIG. 1C is a flowchart of a heterogeneous inter-cell handover method according to an exemplary embodiment, where the heterogeneous inter-cell handover method may include the following steps:
  • Step 101 The radio access network RAN server receives the measurement report sent by the terminal, where the measurement report includes the identifier of the neighboring heterogeneous cell of the serving cell where the terminal is located and the measured value of the neighboring heterogeneous cell.
  • Step 102 The RAN server determines, according to the measurement report, a target heterogeneous cell of the terminal, and allocates resources for the terminal in the target heterogeneous cell, where the configured resource is when the terminal accesses the target heterogeneous cell. Resources used.
  • Step 103 The RAN server sends a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell, where the handover command carries the identifier of the target heterogeneous cell and the information of the configured resource, where The RAN server is configured to manage a serving cell of the terminal and the target heterogeneous cell, and the communication cell adopts a communication system different from that used by the target heterogeneous cell.
  • the RAN server determines the target heterogeneous cell of the terminal according to the measurement report reported by the terminal, that is, determines the neighboring heterogeneous cell that the terminal is ready to access. After that, the RAN server allocates resources for the terminal in the target heterogeneous cell, and sends the configured resource information and the identifier of the target heterogeneous cell to the terminal, so that the terminal switches to the target heterogeneous In the cell, since there is no need to cross the core network in the process of switching between heterogeneous cells, the signaling interaction between the source core network and the target core network is reduced.
  • the method further includes:
  • the method further includes:
  • the standard indication message carries the identifier of the terminal and the standard information of the target heterogeneous cell, where the standard information is used to indicate a communication standard adopted by the target heterogeneous cell.
  • the optional embodiments of the present invention may be used in any combination to form an optional embodiment of the present invention.
  • FIG. 2 is a flowchart of a heterogeneous inter-cell handover method according to another exemplary embodiment, where the heterogeneous inter-cell handover method may include the following steps:
  • Step 201 The first access network device receives a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell.
  • Step 202 The first access network device determines, according to the measurement report, a target heterogeneous cell of the terminal.
  • Step 203 The first access network device sends a handover request message to the second access network device by using a communication interface between the first access network device and the second access network device to which the target heterogeneous cell belongs.
  • the handover request message is used to request the second access network device to allocate resources for the terminal in the target heterogeneous cell, where the handover request message carries the identifier of the terminal and the identifier of the target heterogeneous cell, and the configured resource The resource used when the terminal accesses the target heterogeneous cell.
  • Step 204 The first access network device receives, by using the communication interface, a handover response message sent by the second access network device, where the handover response message carries information about the configured resource.
  • Step 205 The first access network device sends a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell, and the handover command carries the identifier of the target heterogeneous cell and the configured resource. Information, wherein the communication system adopted by the serving cell is different from the communication system adopted by the target heterogeneous cell.
  • the first access network device determines the target heterogeneous cell of the terminal according to the measurement report, when the access site to which the target heterogeneous cell belongs does not belong to the first access network device,
  • the first access network device sends a handover request message to the second access network device by using a communication interface between the first access network device and the second access network device to which the target heterogeneous cell belongs, so that the first access network device
  • the second access network device allocates resources in the target heterogeneous cell, and returns information of the configured resources to the first access network device, and the configured resource is configured by the first access network device.
  • the information and the identifier of the target heterogeneous cell are sent to the terminal, so that the terminal switches to the target heterogeneous cell, and does not need to cross the core network in the handover process between the heterogeneous cells, thereby reducing the source core network and the target core network. Signaling interaction between.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the method further includes:
  • the first access network device sends a sequence number state transition message to the second access network device, where the sequence number state transition message carries a sequence number of a data packet that is not successfully sent to the terminal, and a data packet that is lost during the transmission process.
  • the sequence number of the data packet that is not successfully sent to the terminal is used by the second access network device to resend the data packet corresponding to the sequence number of the data packet that is not successfully sent to the terminal, the transmission
  • the sequence number of the lost data packet in the process is used by the second access network device to request the terminal to resend the data packet corresponding to the sequence number of the lost data packet during the transmission.
  • the method before the first access network device receives the measurement report sent by the terminal, the method further includes:
  • the optional embodiments of the present invention may be used in any combination to form an optional embodiment of the present invention.
  • FIG. 3 is a flowchart of a heterogeneous inter-cell handover method according to a further exemplary embodiment, where the heterogeneous inter-cell handover method may include the following steps:
  • Step 301 The second access network device receives the handover request message sent by the first access network device, where the handover request message carries the identifier of the terminal and the identifier of the target heterogeneous cell, where the first access network device is the service of the terminal The access network device to which the cell belongs.
  • Step 302 The second access network device allocates resources in the target heterogeneous cell according to the handover request message.
  • Step 303 The second access network device sends a handover response message to the first access network device, where the handover response message carries information about the configured resource, where the communication system adopted by the serving cell is The target heterogeneous cell adopts different communication systems.
  • the first access network device to the target heterogeneous cell
  • the associated second access network device sends a handover request message, and correspondingly, after receiving the handover request message, the second access network device is based on the identifier of the terminal carried in the handover request message and the identifier of the target heterogeneous cell.
  • the terminal configuring, by the terminal, the resource in the target heterogeneous cell, and sending the information of the configured resource to the first access network device, where the first access network device information about the configured resource and the target information
  • the identifier of the standard cell is sent to the terminal, so that the terminal switches to the target heterogeneous cell, and does not need to cross the core network in the process of switching between heterogeneous cells, thereby reducing signaling interaction between the source core network and the target core network.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the method further includes:
  • the second access network device sends a path switch request message to the core network device, where the path switch request message carries the format information of the target heterogeneous cell, where the standard information is used to indicate the communication standard adopted by the target heterogeneous cell;
  • the method before the second access network device sends the handover response message to the first access network device, the method further includes:
  • the second access network device sends the information of the configured resource to the target access station to which the target heterogeneous cell belongs, so that the target access station performs resource configuration based on the configured resource information.
  • the method further includes:
  • the second access network device resends the sequence number corresponding to the data packet that was not successfully sent to the terminal. Packet; and/or,
  • the second access network device sends a retransmission request message, where the retransmission request message is used to request the terminal to resend the transmission process.
  • the packet corresponding to the serial number of the lost packet.
  • the method before the second access network device receives the handover request message sent by the first access network device, the method further includes:
  • the optional embodiments of the present invention may be used in any combination to form an optional embodiment of the present invention.
  • FIG. 4 is a flowchart of a heterogeneous inter-cell handover method according to another exemplary embodiment.
  • This embodiment uses a multi-party interaction manner to implement the heterogeneous inter-cell handover method as an example.
  • the heterogeneous inter-cell handover method is described. It can include the following steps:
  • Step 401 The terminal sends a measurement report to the RAN server, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell.
  • the terminal may move from one standard cell to another in the process of accessing the network. In this case, in order not to affect the terminal. For normal operation of the communication service, it is necessary to switch the terminal between heterogeneous cells.
  • the access station to which the target heterogeneous cell belongs belongs to the RAN server, that is, the RAN server is used to simultaneously manage the serving cell of the terminal and the The target heterogeneous cell, and the communication system adopted by the serving cell is different from the communication standard adopted by the target heterogeneous cell.
  • the terminal In order to determine whether the terminal has moved to the adjacent heterogeneous cell, that is, in order to determine whether the terminal needs to be switched, the terminal is preset for a preset duration, or when the terminal detects that the measurement event is satisfied, for example, When the terminal detects that the measured value of the neighboring heterogeneous cell is greater than the preset threshold, the terminal sends a measurement report to the RAN server, where the measurement report includes the identifier and neighboring of the adjacent heterogeneous cell of the serving cell where the terminal is located. The measured value of the heterogeneous cell, such that the RAN server can determine which neighboring heterogeneous cell the terminal needs to switch to based on the measurement report.
  • the neighboring heterogeneous cell identifier is used to uniquely identify an adjacent heterogeneous cell, and the neighboring heterogeneous cell
  • the measured value is usually a reference signal measurement value, and each adjacent heterogeneous cell identifier corresponds to the measured value of the adjacent heterogeneous cell.
  • the preset duration may be customized by the user according to actual needs, or may be set by default by the terminal, which is not limited by the embodiment of the present invention.
  • the preset threshold value may be set by the user according to actual requirements, or may be set by default by the terminal, which is not limited by the embodiment of the present invention.
  • the measurement report may be measured by the terminal itself, or may be sent to the terminal by other devices having a connection relationship with the terminal, which is not limited by the embodiment of the present invention.
  • the measurement report may be measured by the terminal itself, or may be sent to the terminal by other devices having a connection relationship with the terminal, which is not limited by the embodiment of the present invention.
  • For a specific implementation manner of measuring the measurement report refer to the prior art, which is not described in detail herein.
  • the handover method involved in the embodiment of the present invention may also be applied to implement the same standard.
  • the embodiment of the present invention does not describe the handover between the same system.
  • Step 402 The RAN server receives the measurement report, determines a target heterogeneous cell based on the measurement report, and configures a resource for the terminal in the target heterogeneous cell, where the configured resource is the terminal accessing the target heterogeneous cell.
  • the resources used at the time are used at the time.
  • the measured value of the largest neighboring heterogeneous cell is obtained from the measured value of the neighboring heterogeneous cell, and the measured value of the largest neighboring heterogeneous cell is corresponding.
  • the cell is determined to be the target heterogeneous cell as an example. In another embodiment, the target heterogeneous cell may be determined according to other manners, which is not limited in this embodiment of the present invention.
  • the RAN server is used to manage the multiple heterogeneous access sites, and therefore, the RAN server determines the target heterogeneous cell. Then, resources are directly configured in the target heterogeneous cell for the terminal.
  • Step 403 The RAN server sends the configured resource information to the access station to which the target heterogeneous cell belongs, so that the access station performs resource configuration based on the configured resource information.
  • the access station to which the target heterogeneous cell belongs Before the terminal is connected to the target heterogeneous cell, the access station to which the target heterogeneous cell belongs is required to receive the access of the terminal, and therefore, the RAN service is required.
  • the device After the terminal allocates the resource in the target heterogeneous cell, the device needs to send the configured resource information to the access site to which the target heterogeneous cell belongs, so that the access site performs resources based on the configured resource information. Configure to wait for access to the terminal.
  • the access station to which the target heterogeneous cell belongs is based on the information of the configured resource, and the Radio Link Control (RLC) layer and the media access control (Media Access Control) on the access site.
  • RLC Radio Link Control
  • Media Access Control media access control
  • the MAC) layer and the physical layer (PHY) layer perform resource allocation and the like.
  • Step 404 The RAN server sends a handover command to the terminal, where the handover command carries at least the identifier of the target heterogeneous cell and the information of the configured resource.
  • the RAN server After the RAN server sends the information of the configured resource to the access station to which the target heterogeneous cell belongs, the information about the configured resource needs to be sent to the terminal, and the terminal needs to be notified to perform the handover, that is, the RAN server sends the information to the terminal.
  • the handover command is sent, where, in a possible implementation, the handover command may be sent to the terminal by using a Radio Resource Control (RRC) message.
  • RRC Radio Resource Control
  • the handover command carries the identifier of the target heterogeneous cell and the information of the configured resource.
  • Step 405 The terminal receives the handover command, and switches to the target heterogeneous cell based on the configured resource information and the identifier of the target heterogeneous cell.
  • the terminal After receiving the handover command, the terminal extracts the configured resource information and the identifier of the target heterogeneous cell from the handover command, and the terminal performs information configuration based on the configured resource information, and is based on the identifier of the target heterogeneous cell. Synchronizing with the access site to which the target heterogeneous cell belongs.
  • the terminal performs the information configuration based on the information of the configured resource, and the terminal synchronizes the identifier of the target heterogeneous cell with the access site to which the target heterogeneous cell belongs, refer to the prior art, for example, For the random access procedure of the LTE in the prior art, the embodiment of the present invention does not limit this.
  • the configuration information completion message is sent to the RAN server by the target heterogeneous cell, where the configuration information completion message is used to indicate that the terminal has completed information configuration. That is, the terminal has access to the target heterogeneous cell.
  • this embodiment implements switching between heterogeneous cells.
  • the core network device may change the charging policy and the security mechanism of the terminal. Therefore, in the embodiment of the present invention, after the handover is completed, the core needs to be notified.
  • the network device is connected to the neighboring heterogeneous cell. For details, see step 406.
  • Step 406 The RAN server sends a system indication message to the core network device, where the system indicates The message carries the identifier of the terminal and the standard information of the target heterogeneous cell, and the system information is used to indicate the communication standard adopted by the target heterogeneous cell.
  • the RAN server After receiving the configuration information completion message, the RAN server sends a standard indication message to the core network device, and has notified the core network device of the standard information of the target heterogeneous cell accessed by the terminal, so as to be based on the standard information with the core network device. Perform further operations, such as changing the billing policy or security mechanism of the terminal.
  • the core network device may send a standard indication confirmation message to the RAN server, where the standard indication confirmation message is used to prepare the core network device.
  • the standard indication message has been received to prevent the RAN server from repeatedly transmitting the standard indication message.
  • the RAN server determines the target heterogeneous cell of the terminal according to the measurement report reported by the terminal, that is, determines the neighboring heterogeneous cell that the terminal is ready to access. After that, the RAN server allocates resources for the terminal in the target heterogeneous cell, and sends the configured resource information and the identifier of the target heterogeneous cell to the terminal, so that the terminal switches to the target heterogeneous In the cell, since there is no need to cross the core network in the process of switching between heterogeneous cells, the signaling interaction between the source core network and the target core network is reduced.
  • FIG. 5A is a flowchart of a heterogeneous inter-cell handover method according to another exemplary embodiment.
  • This embodiment uses a multi-party interaction manner to implement the heterogeneous inter-cell handover method as an example.
  • the heterogeneous inter-cell handover method is described. It can include the following steps:
  • Step 501 The terminal sends a measurement report to the first access network device, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell.
  • the access station to which the target heterogeneous cell belongs does not belong to the first access network device, that is, the access station to which the serving cell of the terminal belongs and the target heterogeneous cell
  • the access site to which the access belongs belongs to the first access network device
  • the access site to which the target heterogeneous cell belongs belongs to the second access network device.
  • a communication interface exists between the first access network device and the second access network device, and the first access network device and the second access network device belong to the same core network device, that is, the core
  • the network device is configured to manage the serving cell of the terminal and the target heterogeneous cell, and the communication system adopted by the serving cell is different from the communication standard adopted by the target heterogeneous cell.
  • the first access network device and the second access network device may both be RAN servers, and the first access network device and the second access network device may also be base stations.
  • the heterogeneous inter-cell handover in the embodiment of the present invention refers to a service managed by the terminal from a RAN server.
  • the cell switches to a heterogeneous cell managed by another RAN server.
  • the heterogeneous inter-cell handover in the embodiment of the present invention means that the terminal switches from the serving cell under one base station to In another heterogeneous cell under another base station. For the above two cases, the switching principle is similar.
  • the handover method according to the embodiment of the present invention may also be applied to implement the same-standard cell.
  • the inter-cell handover between the same system is not described in detail.
  • Step 502 The first access network device receives the measurement report, and determines a target heterogeneous cell based on the measurement report.
  • the first access network device determines the implementation process of the target heterogeneous cell based on the measurement report, and the RAN server determines the implementation process of the target heterogeneous cell based on the measurement report, which is not described in detail herein. .
  • the first access network device in order to facilitate the first access network device to determine the second access network device to which the target heterogeneous cell belongs according to the identifier of the target heterogeneous cell, the first access network device is established and the second When the communication connection between the network devices is accessed, the first access network device and the second access network device can mutually exchange cell information managed by each other.
  • the first access network device when establishing a communication connection between the first access network device and the second access network device, receives the second access network sent by the second access network device The device identifier of the device, the identifier of all cells managed by the second access network device, and the communication standard information.
  • the device identifier is used to uniquely identify an access network device, and the communication system information is used to uniquely describe a cell communication system.
  • Step 503 The first access network device sends a handover request message to the second access network device by using a communication interface between the first access network device and the second access network device to which the target heterogeneous cell belongs.
  • the handover request message is used to request the second access network device to allocate resources for the terminal in the target heterogeneous cell, where the handover request message carries the identifier of the terminal and the identifier of the target heterogeneous cell, and the configured resource The resource used when the terminal accesses the target heterogeneous cell.
  • the first access network device passes the first access network device and the target heterogeneous cell a communication interface between the second access network devices of the genus, sending a handover request message to the second access network device, where a communication interface exists between the first access network device and the second access network device,
  • the first access network device and the second access network device belong to the same core network, that is, the core network device can be used to manage the first access network device and the second access network. device.
  • the first access network device sends a handover request message to the second access network device, so that the second access network device is based on the identifier of the terminal and the identifier of the target heterogeneous cell, Configure the resources required for handover in the system cell.
  • Step 504 The second access network device receives the handover request message sent by the first access network device, and configures, according to the handover request message, the resource in the target heterogeneous cell, where the handover request message carries the terminal And identifying, by the identifier of the target heterogeneous cell, the first access network device is an access network device to which the serving cell where the terminal is located.
  • the second access network device may decide whether to accept the handover request message according to the current usage of the target heterogeneous cell, and if the handover request is accepted, the The second access network device configures resources for the terminal in the target heterogeneous cell, and if the handover request is not accepted, sends a handover failure response message to the first access network device, when the second access network device does not accept the
  • the first access network device needs to re-determine another target heterogeneous cell based on the measurement report, and the subsequent implementation process is similar to the embodiment of the present invention, and the case is not described in detail herein.
  • Step 505 The second access network device sends the information of the configured resource to the target access site to which the target heterogeneous cell belongs, so that the target access site performs resource configuration based on the configured resource information.
  • the second access network device sends the configured resource information to the target access station
  • Step 506 The second access network device sends a handover response message to the first access network device, where the handover response message carries information about the configured resource.
  • the second access network device After the second access network device sends the information of the configured resource to the access site to which the target heterogeneous cell belongs, the information about the configured resource is also sent to the terminal by using the first access network device, that is, the The second access network device sends a handover response message carrying the information of the configured resource to the first access network device.
  • Step 507 The first access network device receives a handover response message sent by the second access network device. Sending a handover command to the terminal, where the handover command carries the information of the configured resource and the identifier of the target heterogeneous cell.
  • the specific implementation process of sending the handover command to the terminal may refer to the implementation of the handover command sent by the RAN server to the terminal in step 404. The process is not described in detail here.
  • the first access network device after the first access network device sends a handover command to the terminal, it also sends a sequence number state transition message to the second access network device, where the sequence number state transition message carries a sequence that is not successfully sent to the terminal data packet. The number and at least one of the serial numbers of the packets lost during transmission.
  • the first access network device needs to notify the second access network device of the service running condition of the terminal, that is, the sequence of the data packet that the second access network device fails to successfully send to the terminal. And at least one of a sequence number of the lost data packet during transmission, so that when the terminal completely switches to the target heterogeneous cell managed by the second access network device, the second access network device pair
  • the data packet corresponding to the serial number of the data packet that is not successfully transmitted to the terminal, and the data packet corresponding to the serial number of the data packet that is lost during the transmission process are further processed. For details, refer to the following steps 511 to 512.
  • Step 508 The terminal receives the handover command, and switches to the target heterogeneous cell based on the configured resource information and the identifier of the target heterogeneous cell.
  • Step 509 The second access network device sends a path switch request message to the core network device, where the path switch request message carries the format information of the target heterogeneous cell, where the standard information is used to indicate the communication adopted by the target heterogeneous cell. System.
  • the first access network device is replaced, that is, the terminal is replaced by the cell managed by the first access network device to the cell managed by the second access network device during the handover process. Therefore, the path for transmitting data between the terminal and the core network device is also changed, that is, the data between the terminal and the core network device is transmitted through the first access network device, and the second access is changed.
  • the network device transmits data between the terminal and the core network device. Therefore, after receiving the configuration information completion message sent by the terminal, the second access network device needs to send a path switch request message to the core network device, so that the core network device changes the path of data transmission between the terminal and the terminal.
  • the path switch request message may further carry the format information of the target heterogeneous cell, so that the core network device determines that the system information of the target heterogeneous cell can be further operated. For example, change the charging policy or security mechanism of the terminal.
  • Step 510 A path switch response message sent by the core network device to the second access network device, where the path switch response message carries data channel information.
  • the core network device After receiving the path switch request message sent by the second access network device, the core network device establishes a data channel with the second access network device, that is, the data channel information is used to indicate that the core network device is transmitted and a channel of the data between the terminals, the core network device sends the data channel information corresponding to the data channel to the second access network device, that is, the second access network device receives the path switch sent by the core network device Response message.
  • the second access network device After receiving the path switch response message sent by the core network device, the second access network device confirms that the data link of the terminal has all been moved to the second access network device, and the second access network device And sending, by the first access network device, a terminal context release message, where the terminal context release message carries an identifier of the terminal, where the context release message is used to indicate that the first access network device releases the terminal in the first access network The context in the device.
  • the second access network device after receiving the path switch response message sent by the core network device, the second access network device starts timing, and after sending the terminal, sends the terminal to the first access network device.
  • the context release message so that when the terminal frequently switches between the cell before the handover and the heterogeneous cell after the handover, it is possible to avoid the need to re-establish the context, thereby reducing the handover delay in a phased manner.
  • the foregoing specified duration may be customized by the user according to actual requirements, or may be set by default by the second access network device, which is not limited by the embodiment of the present invention.
  • the first access network device sends a sequence to the second access network device after sending the handover command to the terminal.
  • Status transfer message therefore, after the terminal handover is completed, the second access network device also needs a data packet corresponding to the sequence number of the data packet that is not successfully sent to the terminal in the column number state transition message, and the transmission
  • the data packet corresponding to the sequence number of the lost data packet in the process is further processed.
  • steps 511 to 512 refer to the following steps 511 to 512.
  • Step 511 The second access network device receives the sequence number state transition message, and obtains, from the sequence number state transition message, the sequence number of the data packet that is not successfully sent to the terminal, and the data packet that is lost during the transmission process. At least one of the serial numbers.
  • Step 512 The second access network device further performs at least one of a data packet corresponding to a sequence number of a data packet that is not successfully sent to the terminal and a data packet corresponding to a sequence number of the lost data packet in the transmission process. deal with.
  • the second access network device further processes at least one of the data packet corresponding to the sequence number of the data packet that is not successfully sent to the terminal and the data packet corresponding to the sequence number of the lost data packet in the transmission process.
  • the method includes: if the sequence number state transition message carries the sequence number of the data packet that is not successfully sent to the terminal, the second access network device sends the data packet corresponding to the sequence number of the data packet that is not successfully sent to the terminal Resending, if the sequence number state transition message carries the sequence number of the lost data packet in the transmission process, the second access network device sends a retransmission request message, where the retransmission request message is used to request the terminal to resend The data packet corresponding to the serial number of the lost data packet in the transmission process, if the serial number state transition message carries the serial number of the data packet that is not successfully sent to the terminal, and the serial number of the lost data packet in the transmission process, Then, the second access network device retransmits the data packet corresponding to the sequence number
  • the specific implementation process of the second access network device requesting the terminal to resend the data packet corresponding to the sequence number of the lost data packet in the transmission process may include: the second access network device passing the target heterogeneous cell
  • the terminal sends a retransmission request, where the retransmission request carries a sequence number of the lost data packet in the transmission process, where the retransmission request is used to indicate the data packet corresponding to the sequence number of the lost data packet in the transmission process. Resend.
  • the data packet corresponding to the sequence number of the data packet lost in the transmission process is requested by the second access network device in the foregoing method.
  • the second access network device may be configured to request the terminal to resend the data packet corresponding to the sequence number of the lost data packet in the transmission process. Make a limit.
  • the first access network device determines the target heterogeneous cell of the terminal according to the measurement report reported by the terminal, that is, determines the phase that the terminal is ready to access.
  • a neighboring cell after which the first access network device communicates with the second access network device to which the target heterogeneous cell belongs by using a communication interface between the first access network device and the second access network device Sending a handover request message, so that the second access network device configures resources for the terminal in the target heterogeneous cell, and returns information of the configured resources to the first access network device, and the first access network device Enter
  • the network device sends the information about the configured resource to the terminal, so that the terminal accesses the target heterogeneous cell, and does not need to cross the core network in the process of switching between the heterogeneous cells, thereby reducing the source core network and the target core network. Signaling interaction between.
  • the first access network device and the second access network device are both base stations, and only one standard access site exists under the RAN server.
  • the terminal switches between two heterogeneous base stations, and an interface exists between the two heterogeneous base stations.
  • the NR site may be a remote radio frequency
  • the NR site protocol layer is deployed in the first In the RAN server, that is, the first RAN server and the NR station as a whole can be regarded as one NR base station.
  • only one standard access station existing under the second RAN server is an LTE station.
  • the LTE site may also be a remote radio.
  • the LTE site protocol layer is deployed in the second RAN server, that is, the second RAN server and the LTE site as a whole can be regarded as one.
  • An LTE base station that is, an eNB, is an interface between the NR base station and the eNB, and the terminal can perform handover between the NR base station and the eNB.
  • the specific implementation process is as described above and will not be described in detail herein.
  • FIG. 6 is a schematic structural diagram of a RAN server, which may be implemented by software, hardware, or a combination of both, according to an exemplary embodiment.
  • the RAN server can include:
  • the receiving module 610 is configured to receive a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • a determining module 620 configured to determine, according to the measurement report received by the receiving module 610, a target heterogeneous cell of the terminal, and configure a resource for the terminal in the target heterogeneous cell, where the configured resource is the terminal accessing the Resources used when targeting a heterogeneous cell;
  • the sending module 630 is configured to send a handover command to the terminal, where the handover command is used to instruct the terminal to switch to the target heterogeneous cell determined by the determining module 620, where the handover command carries the identifier of the target heterogeneous cell and the configured resource.
  • the RAN server is configured to manage a serving cell of the terminal and the target heterogeneous cell, where the serving cell adopts a communication system different from that used by the target heterogeneous cell.
  • the sending module 630 is further configured to:
  • the sending module 630 is further configured to:
  • the standard indication message carries the identifier of the terminal and the standard information of the target heterogeneous cell, where the standard information is used to indicate a communication standard adopted by the target heterogeneous cell.
  • the RAN server determines the target heterogeneous cell of the terminal according to the measurement report reported by the terminal, that is, determines the neighboring heterogeneous cell that the terminal is ready to access. After that, the RAN server allocates resources for the terminal in the target heterogeneous cell, and sends the configured resource information and the identifier of the target heterogeneous cell to the terminal, so that the terminal switches to the target heterogeneous In the cell, since there is no need to cross the core network in the process of switching between heterogeneous cells, the signaling interaction between the source core network and the target core network is reduced.
  • the above sending module 630 can be a transmitter or a transceiver.
  • the above receiving module 610 can be a receiver or a transceiver, and the sending module 630 and the receiving module 610 can be integrated to form a transceiver module, which is implemented as a transceiver corresponding to hardware.
  • the above determining module 620 may be embedded in or independent of the processor of the RAN server in hardware, or may be stored in the memory of the RAN server in software, so that the processor invokes the operations corresponding to the above modules.
  • the processor can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like.
  • the RAN server shown in FIG. 6 may be specifically used to perform the steps of the RAN server in FIG. 4, and details are not described herein.
  • FIG. 7 is a schematic structural diagram of a first access network device, which may be implemented by software, hardware, or a combination of both, according to an exemplary embodiment.
  • the first access network device may include:
  • the first receiving module 710 is configured to receive a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • a determining module 720 configured to determine, according to the measurement report received by the first receiving module 710, a target heterogeneous cell of the terminal;
  • the first sending module 730 is configured to send, by using the communication interface between the first access network device and the second access network device to which the target heterogeneous cell is determined by the determining module 720, to the second access network device a handover request message, the handover request message is used to request the second access network device to configure a resource for the terminal in the target heterogeneous cell, where the handover request message carries an identifier of the terminal and an identifier of the target heterogeneous cell, where The configured resource is the resource used when the terminal accesses the target heterogeneous cell. source;
  • the second receiving module 740 is configured to receive, by using the communications interface, a handover response message sent by the second access network device, where the handover response message carries information of the configured resource;
  • the second sending module 750 is configured to send a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell, where the handover command carries the identifier of the target heterogeneous cell and the second receiving module 740 Information about the resources of the configuration received;
  • the communication system adopted by the serving cell is different from the communication standard adopted by the target heterogeneous cell.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the second sending module 750 is further configured to:
  • sequence number state transition message carries at least one of a sequence number of a data packet that is not successfully sent to the terminal, and a sequence number of the lost data packet during transmission, where
  • the sequence number of the data packet that is not successfully sent to the terminal is used by the second access network device to resend the data packet corresponding to the sequence number of the data packet that is not successfully sent to the terminal, and the data packet that is lost during the transmission process
  • the sequence number is used by the second access network device to request the terminal to resend the data packet corresponding to the sequence number of the lost data packet during the transmission.
  • the first receiving module 710 is further configured to:
  • the first access network device determines the target heterogeneous cell of the terminal according to the measurement report, when the access site to which the target heterogeneous cell belongs does not belong to the first access network device,
  • the first access network device sends a handover request message to the second access network device by using a communication interface between the first access network device and the second access network device to which the target heterogeneous cell belongs, so that the first access network device
  • the second access network device allocates resources in the target heterogeneous cell, and returns information of the configured resources to the first access network device, and the configured resource is configured by the first access network device.
  • the information and the identifier of the target heterogeneous cell are sent to the terminal, so that the terminal switches to the target heterogeneous cell, and does not need to cross the core network in the handover process between the heterogeneous cells, thereby reducing the source core network and the target core network. Signaling interaction between.
  • the first sending module 730 and the second sending module 750 may be a transmitter or a transceiver, and the first receiving module 710 and the second receiving module 740 may be a receiver or a transceiver, and the first sending module 730, the second The sending module 750, the first receiving module 710, and the second receiving module 740 can be integrated to form a transceiver module, which is implemented as a transceiver corresponding to hardware.
  • the above determining module 720 may be embedded in or independent of the processor of the first access network device in hardware, or may be stored in the memory of the first access network device in software, so that the processor calls to execute the above The corresponding operation of the module.
  • the processor can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like.
  • first access network device shown in FIG. 7 may be specifically used to perform the steps of the first access network device in FIG. 5A, and details are not described herein.
  • FIG. 8 is a schematic structural diagram of a second access network device, which may be implemented by software, hardware, or a combination of both, according to an exemplary embodiment.
  • the second access network device may include:
  • the receiving module 810 is configured to receive a handover request message sent by the first access network device, where the handover request message carries an identifier of the terminal and an identifier of the target heterogeneous cell, where the first access network device is a serving cell to which the terminal belongs Access network equipment;
  • the configuration module 820 is configured to allocate resources in the target heterogeneous cell according to the handover request message received by the receiving module 810.
  • the sending module 830 is configured to send a handover response message to the first access network device, where the handover response message carries information about resources configured by the configuration module 820;
  • the communication system adopted by the serving cell is different from the communication standard adopted by the target heterogeneous cell.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the sending module 830 is further configured to send a path switch request message to the core network device, where the path switch request message carries the format information of the target heterogeneous cell, where the format information is used to indicate that the target heterogeneous cell is used.
  • Communication system ;
  • the receiving module 810 is further configured to receive a path switch response message sent by the core network device, where the path switch response message carries data channel information, where the data channel information is used to indicate data between the core network device and the terminal. Channel.
  • the sending module 830 is further configured to:
  • the receiving module 810 is further configured to receive a sequence number state transition message sent by the first access network device, where the sequence number state transition message carries a sequence number of the data packet that is not successfully sent to the terminal, and a transmission process. At least one of the serial numbers of the lost packets;
  • the sending module 830 is further configured to: when the sequence number state transition message received by the receiving module 810 carries the sequence number of the data packet that is not successfully sent to the terminal, resend the data packet that is not successfully sent to the terminal.
  • the data packet corresponding to the serial number;
  • the sending module 830 is further configured to: when the sequence number state transition message received by the receiving module 810 carries the sequence number of the lost data packet in the transmission process, send a retransmission request message, where the retransmission request message is used to request the The terminal resends the data packet corresponding to the serial number of the lost data packet during the transmission.
  • the sending module 830 is further configured to:
  • the first access network device to the target heterogeneous when the access site to which the target heterogeneous cell belongs does not belong to the first access network device, the first access network device to the target heterogeneous The second access network device to which the cell belongs sends a handover request message, and correspondingly, after receiving the handover request message, the second access network device is based on the identifier of the terminal carried in the handover request message and the target heterogeneous cell And identifying, by the terminal, the resource in the target heterogeneous cell, and sending the configured information of the resource to the first access network device, where the first access network device information about the configured resource and the target The identifier of the heterogeneous cell is sent to the terminal, so that the terminal switches to the target heterogeneous cell, and there is no need to cross the core network in the process of switching between the heterogeneous cells, thereby reducing the letter between the source core network and the target core network. Make interaction.
  • the above sending module 830 can be a transmitter or a transceiver.
  • the above receiving module 810 can be a receiver or a transceiver, and the sending module 830 and the receiving module 810 can be integrated to form a transceiver module, which is implemented as a transceiver corresponding to hardware.
  • the above configuration module 820 may be embedded in or independent of the processor of the second access network device in hardware, or may be stored in the memory of the second access network device in software, so that the processor calls to execute the above The corresponding operation of the module.
  • the processor can be Central processing unit (CPU), microprocessor, microcontroller, etc.
  • the second access network device shown in FIG. 8 may be specifically used to perform the steps of the second access network device in FIG. 5A, and details are not described herein.
  • FIG. 9 is a block diagram of a RAN server 900 according to an exemplary embodiment, which can implement the heterogeneous inter-cell handover method provided by the present invention.
  • the RAN server 900 includes a transmitter 932, a receiver 931, a memory 933, and a processor 934 coupled to the transmitter 932, the receiver 931, and the memory 933, respectively:
  • the receiver 931 is configured to receive a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • the processor 934 is configured to determine, according to the measurement report received by the receiver 931, a target heterogeneous cell of the terminal, and configure a resource for the terminal in the target heterogeneous cell, where the configured resource is the terminal accessing the Resources used when targeting a heterogeneous cell;
  • the transmitter 932 is configured to send a handover command to the terminal, where the handover command is used to indicate that the terminal switches to the target heterogeneous cell determined by the processor 934, where the handover command carries the identifier and configuration of the target heterogeneous cell.
  • the information of the resource wherein the RAN server is configured to manage the serving cell of the terminal and the target heterogeneous cell, and the communication system adopted by the serving cell is different from the communication standard adopted by the target heterogeneous cell.
  • the transmitter 932 is further configured to:
  • the transmitter 932 is further configured to:
  • the standard indication message carries the identifier of the terminal and the standard information of the target heterogeneous cell, where the standard information is used to indicate a communication standard adopted by the target heterogeneous cell.
  • the memory 933 is configured to store one or more execution programs, and the processor 934 executes the one or more execution programs to implement the heterogeneous inter-cell handover method.
  • the RAN server determines the target heterogeneous cell of the terminal according to the measurement report reported by the terminal, that is, determines the neighboring heterogeneous cell that the terminal is ready to access. After that, the RAN server allocates resources for the terminal in the target heterogeneous cell, and sends the configured resource information and the identifier of the target heterogeneous cell to the terminal. Therefore, the terminal is switched to the target heterogeneous cell, and the signaling interaction between the source core network and the target core network is reduced because there is no need to cross the core network in the process of switching between heterogeneous cells.
  • FIG. 10 is a block diagram of a first access network device 1000 according to an exemplary embodiment, which can implement the heterogeneous inter-cell handover method provided by the present invention.
  • the first access network device includes a transmitter 1032, a receiver 1031, a memory 1033, and a processor 1034 coupled to the transmitter 1032, the receiver 1031, and the memory 1033, respectively:
  • the receiver 1031 is configured to receive a measurement report sent by the terminal, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • the processor 1033 is configured to determine, according to the measurement report received by the receiver 1031, a target heterogeneous cell of the terminal;
  • the transmitter 1032 is configured to send, by using the communication interface between the first access network device and the second access network device to which the target heterogeneous cell is determined by the processor 1033, to the second access network device.
  • a handover request message the handover request message is used to request the second access network device to configure a resource for the terminal in the target heterogeneous cell, where the handover request message carries an identifier of the terminal and an identifier of the target heterogeneous cell, where The configured resource is a resource used when the terminal accesses the target heterogeneous cell;
  • the receiver 1031 is further configured to receive, by using the communication interface, a handover response message sent by the second access network device, where the handover response message carries information of the configured resource;
  • the transmitter 1032 is further configured to send a handover command to the terminal, where the handover command is used to instruct the terminal to switch to the target heterogeneous cell, where the handover command carries the identifier of the target heterogeneous cell and the receiver 1031 receives the Information about the configured resources;
  • the communication system adopted by the serving cell is different from the communication standard adopted by the target heterogeneous cell.
  • the first access network device and the second access network device are both radio access network RAN servers; or
  • the first access network device and the second access network device are both base stations.
  • the transmitter 1032 is further configured to:
  • sequence number state transition message carries at least one of a sequence number of a data packet that is not successfully sent to the terminal, and a sequence number of the lost data packet during transmission, where The sequence number of the data packet that is not successfully sent to the terminal is used by the second access network device to resend the data packet corresponding to the sequence number of the data packet that was not successfully sent to the terminal, and the transmission
  • the sequence number of the lost data packet in the process is used by the second access network device to request the terminal to resend the data packet corresponding to the sequence number of the lost data packet during the transmission.
  • the receiver 1031 is further configured to:
  • the memory 1033 is configured to store one or more execution programs, and the processor 1034 executes the one or more execution programs to implement the heterogeneous inter-cell handover method.
  • the first access network device determines the target heterogeneous cell of the terminal according to the measurement report, when the access site to which the target heterogeneous cell belongs does not belong to the first access network device,
  • the first access network device sends a handover request message to the second access network device by using a communication interface between the first access network device and the second access network device to which the target heterogeneous cell belongs, so that the first access network device
  • the second access network device allocates resources in the target heterogeneous cell, and returns information of the configured resources to the first access network device, and the configured resource is configured by the first access network device.
  • the information and the identifier of the target heterogeneous cell are sent to the terminal, so that the terminal switches to the target heterogeneous cell, and does not need to cross the core network in the handover process between the heterogeneous cells, thereby reducing the source core network and the target core network. Signaling interaction between.
  • FIG. 11 is a block diagram of a second access network device 1100 according to an exemplary embodiment, which can implement the heterogeneous inter-cell handover method provided by the present invention.
  • the second access network device includes a transmitter 1132, a receiver 1131, a memory 1133, and a processor 1134 coupled to the transmitter 1132, the receiver 1131, and the memory 1133, respectively:
  • the receiver 1131 is configured to receive a handover request message sent by the first access network device, where the handover request message carries an identifier of the terminal and an identifier of the target heterogeneous cell, where the first access network device is a serving cell where the terminal is located.
  • the processor 1134 is configured to allocate resources in the target heterogeneous cell according to the handover request message received by the receiver 1131.
  • the transmitter 1132 is configured to send a handover response message to the first access network device, where the handover response message carries information about the resource configured by the receiver 1131, where the communication system used by the serving cell and the target heterogeneous cell The communication system used is different.
  • the first access network device and the second access network device are both a radio access network RAN. Server; or,
  • the first access network device and the second access network device are both base stations.
  • the transmitter 1132 is further configured to send a path switch request message to the core network device, where the path switch request message carries the format information of the target heterogeneous cell, where the format information is used to indicate that the target heterogeneous cell is used.
  • Communication system ;
  • the receiver 1131 is further configured to receive a path switch response message sent by the core network device, where the path switch response message carries data channel information, where the data channel information is used to indicate data between the core network device and the terminal. Channel.
  • the transmitter 1132 is further configured to:
  • the receiver 1131 is further configured to receive a sequence number state transition message sent by the first access network device, where the sequence number state transition message carries a sequence number of the data packet that is not successfully sent to the terminal, and a transmission process. At least one of the serial numbers of the lost packets;
  • the transmitter 1132 is further configured to: when the sequence number state transition message received by the receiver 1131 carries the sequence number of the data packet that is not successfully sent to the terminal, resend the data packet that is not successfully sent to the terminal. a packet corresponding to the serial number; and/or,
  • the transmitter 1132 is further configured to: when the sequence number state transition message received by the receiver 1131 carries the sequence number of the lost data packet in the transmission process, send a retransmission request message, where the retransmission request message is used to request the The terminal resends the data packet corresponding to the serial number of the lost data packet during the transmission.
  • the transmitter 1132 is further configured to:
  • the memory 1133 is configured to store one or more execution programs, and the one or more execution programs are executed by the processor 1134 to implement the heterogeneous inter-cell handover method described above.
  • the first access network device to the target heterogeneous when the access site to which the target heterogeneous cell belongs does not belong to the first access network device, the first access network device to the target heterogeneous
  • the second access network device to which the cell belongs sends a handover request message, and correspondingly, after receiving the handover request message, the second access network device is based on the identifier and target of the terminal carried in the handover request message.
  • the identifier of the system is configured to allocate resources to the target heterogeneous cell, and send the information of the configured resource to the second access network device, where the first access network device configures the resource information.
  • FIG. 12 is a system block diagram showing a heterogeneous inter-cell handover method provided by the present invention, according to an exemplary embodiment.
  • the system primarily includes a terminal 1210 and a RAN server 1220, wherein the terminal 1210 can communicate with the RAN server 1220 through an access site under the RAN server 1220.
  • the terminal 1210 is configured to send a measurement report to the RAN server 1220, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • the RAN server 1220 is configured to receive the measurement report, and determine a target heterogeneous cell of the terminal 1210 according to the measurement report, and configure a resource for the terminal 1210 in the target heterogeneous cell, where the configured resource is the terminal 1210. Resources used when accessing the target heterogeneous cell;
  • the RAN server 1220 is further configured to send a handover command to the terminal 1210, where the handover command carries the identifier of the target heterogeneous cell and the information of the configured resource;
  • the terminal 1210 is further configured to switch to the target heterogeneous cell according to the handover command, where the serving cell adopts a communication system different from that used by the target heterogeneous cell.
  • system may further include a core network device 1230 having a communication connection established with the core network device 1230.
  • the RAN server 1220 is further configured to send information about the configured resource to the access site to which the target heterogeneous cell belongs, so that the access site is based on The resource information of the configuration is configured for resources.
  • the RAN server 1220 is further configured to send a standard indication message to the core network device 1230, where the identifier of the terminal 1210 carries the identifier of the terminal and the target heterogeneous
  • the standard information of the cell is used to indicate the communication standard adopted by the target heterogeneous cell.
  • the RAN server determines the target heterogeneous cell of the terminal according to the measurement report reported by the terminal, that is, determines the neighboring heterogeneous cell that the terminal is ready to access. After that, the RAN server is the terminal in the target heterogeneous cell Configuring a resource, and sending the information of the configured resource and the identifier of the target heterogeneous cell to the terminal, so that the terminal switches to the target heterogeneous cell, because there is no need to cross the core in the process of switching between heterogeneous cells.
  • the network therefore, reduces the signaling interaction between the source core network and the target core network.
  • FIG. 13 is a system block diagram showing a heterogeneous inter-cell handover method provided by the present invention, according to another exemplary embodiment.
  • the system mainly includes a terminal 1310, a first access network device 1320, and a second access network device 1330.
  • the terminal 1310 can communicate with the first access network device 1320 through the access site under the first access network device 1320, the first access network device 1320 and the second access network device.
  • There is a communication interface between 1330 that is, communication between the first access network device 1320 and the second access network device 1330.
  • the terminal 1310 is configured to send a measurement report to the first access network device 1320, where the measurement report includes an identifier of a neighboring heterogeneous cell of the serving cell where the terminal is located, and a measured value of the neighboring heterogeneous cell;
  • the first access network device 1320 is configured to receive the measurement report, and determine, according to the measurement report, a target heterogeneous cell of the terminal 1310;
  • the first access network device 1320 is further configured to use the communication interface between the first access network device 1320 and the second access network device 1330 to which the target heterogeneous cell belongs, to the second access network device 1330. Sending a handover request message;
  • the second access network device 1330 is configured to configure, according to the handover request message, a resource for the terminal 1310 in the target heterogeneous cell, where the handover request message carries an identifier of the terminal 1310 and an identifier of the target heterogeneous cell, where
  • the configured resource is a resource used when the terminal 1310 accesses the target heterogeneous cell;
  • the second access network device 1330 is further configured to send, by using the communication interface, a handover response message to the first access network device 1320, where the handover response message carries information of the configured resource;
  • the first access network device 1320 is further configured to send, by using the communication interface, a handover command to the terminal 1310, where the handover command carries an identifier of the target heterogeneous cell and information of the configured resource;
  • the terminal 1310 is further configured to switch to the target heterogeneous cell according to the handover command, where the serving cell adopts a communication system different from that used by the target heterogeneous cell.
  • the system further includes a core network device 1340, which establishes a communication connection with the first access network device 1320 and the second access network device 1330, that is, the core network device 1340 is used for The first access network device 1320 and the second access network device 1330 are managed.
  • a core network device 1340 which establishes a communication connection with the first access network device 1320 and the second access network device 1330, that is, the core network device 1340 is used for The first access network device 1320 and the second access network device 1330 are managed.
  • the first access network device 1320 and the second access network device 1330 are both radio access network RAN servers; or the first access network device 1320 and the second access network device 1330 are both For the base station.
  • the first access network device 1320 is further configured to send a sequence number state transition message to the second access network device 1330, the sequence.
  • the status transition message carries at least one of a sequence number of a data packet that was not successfully sent to the terminal and a sequence number of the lost data packet during transmission, and the sequence number of the data packet that was not successfully sent to the terminal is used for the second
  • the access network device resends the data packet corresponding to the sequence number of the data packet that is not successfully sent to the terminal, and the sequence number of the lost data packet in the transmission process is used by the second access network device to request the terminal to resend the data packet.
  • the first access network device 1320 before the first access network device 1320 receives the measurement report sent by the terminal 1310, the first access network device 1320 is further configured to:
  • the device After the second access network device 1330 sends the handover response message to the first access network device 1320, the device also sends a path switch request message to the core network device 1340, where the path switch request message carries the standard information of the target heterogeneous cell.
  • the system information is used to indicate a communication standard adopted by the target heterogeneous cell;
  • the second access network device 1330 receives the path switch response message sent by the core network device 1340, where the path switch response message carries data channel information, where the data channel information is used to indicate that the core network device 1340 and the terminal 1310 are transmitted. The channel between the data.
  • the second access network device 1330 before the second access network device 1330 sends the handover response message to the first access network device 1320, the second access network device 1330 is further configured to target the access site to which the target heterogeneous cell belongs. Sending information of the configured resource, so that the target access station performs resource configuration based on the information of the configured resource.
  • the second access network device 1330 is further configured to receive a sequence number state transition message sent by the first access network device 1320, where the sequence number state transition The message carries at least one of a sequence number of a data packet that was not successfully sent to the terminal and a sequence number of the lost data packet during transmission;
  • the second access network device 1330 resends the data packet corresponding to the sequence number of the data packet that was not successfully sent to the terminal.
  • the second access network device 1330 sends a retransmission request message, where the retransmission request message is used to request the terminal to resend the transmission.
  • the packet corresponding to the serial number of the lost packet in the process.
  • the second access network device 1330 before the second access network device 1330 receives the handover request message sent by the first access network device 1320, the second access network device 1330 is further configured to:
  • the device identifier of the second access network device 1330 is sent to the first access network device 1320, and the first The cell identity and communication system information of all cells managed by the second access network device 1330.
  • the first access network device determines the target heterogeneous cell of the terminal according to the measurement report reported by the terminal, that is, determines the phase that the terminal is ready to access.
  • a neighboring cell after which the first access network device communicates with the second access network device to which the target heterogeneous cell belongs by using a communication interface between the first access network device and the second access network device Sending a handover request message, so that the second access network device configures resources for the terminal in the target heterogeneous cell, and returns information of the configured resources to the first access network device, and the first access network device
  • the network access device sends the information about the configured resource to the terminal, so that the terminal accesses the target heterogeneous cell, and does not need to cross the core network in the process of switching between the heterogeneous cells, thereby reducing the source core network and the target core. Signaling interaction between networks.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明公开了一种异制式小区间切换方法及装置，属于通信技术领域。本发明通过无线接入网络RAN服务器接收终端发送的测量报告，根据该测量报告，确定该终端的目标异制式小区，并在该目标异制式小区内为该终端配置资源，该配置的资源为该终端接入该目标异制式小区时所使用的资源，该RAN服务器向该终端发送切换命令，该切换命令用于指示该终端切换至该目标异制式小区，该切换命令携带该目标异制式小区的标识和该配置的资源的信息，其中，该RAN服务器用于管理该终端的服务小区和该目标异制式小区，如此，在异制式小区间切换时，无需跨越核心网即可实现切换，减少了源核心网与目标核心网之间的信令交互。

Description

异制式小区间切换的方法及装置 技术领域
本发明涉及通信技术领域，特别涉及一种异制式小区间切换的方法及装置。
背景技术
随着通信技术的快速发展，各种异制式的网络应运而生，例如，全球移动通信系统(Global System For Mobile Communication，GSM)、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)以及长期演技(Long Term Evolution，LTE)等。该多种异制式网络对应多种异制式小区，随着该多种异制式小区的广泛覆盖，接入小区的终端在移动过程中，很可能从一种制式小区移动到另一种制式小区中，例如，从WCDMA网络的小区移动到LTE网络的小区中，因此，为了保证终端在移动过程中能够持续保持接入状态，需要对终端在异制式小区间进行切换。
目前，由于网络架构中包括多种类型核心网，且每种类型核心网仅能支持一种制式小区，例如，LTE核心网仅能支持LTE网络的小区，因此，如果终端在两种异制式小区间切换，则需要跨越该两种异制式小区的核心网，其具体实现过程包括：如果终端从源小区移动到目标小区，则源核心网向目标核心网发送切换请求消息，该目标核心网接收到该切换请求消息后，为该终端准备资源，之后，该目标核心网向该源核心网发送切换响应消息，该切换响应消息用于指示该目标核心网已准备好的资源，且该切换响应消息中携带该资源对应的配置信息，该源核心网接收到该切换响应消息后，通过源基站向该终端发送切换命令，该切换命令中携带该配置信息，该终端接收到该切换命令后，基于该配置信息，切换至该目标小区，从而实现异制式小区间的切换。
在上述实现过程中，发明人发现现有技术至少存在以下问题：如果终端在两种异制式小区中切换，则切换过程需要跨越核心网，且源核心网和目标核心网之间存在大量的信令交互，导致切换时延较大。
发明内容
为了解决现有技术的问题，本发明实施例提供了一种异制式小区间切换的方法及装置。所述技术方案如下：
第一方面，提供了一种异制式小区间切换的方法，所述方法包括：
无线接入网络RAN服务器接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
所述RAN服务器根据所述测量报告，确定所述终端的目标异制式小区，并在所述目标异制式小区内为所述终端配置资源，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
所述RAN服务器向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述配置的资源的信息；
其中，所述RAN服务器用于管理所述终端的服务小区和所述目标异制式小区，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
在本发明实施例中，RAN服务器在接收终端发送的测量报告后，基于该测量报告，确定目标异制式小区，由该RAN服务器为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息以及该目标异制式小区的标识发送至该终端，以使该终端切换至该目标异制式小区，如此，在异制式小区间进行切换时，不需要跨越核心网，减少了源核心网与目标核心网之间的信令交互。
结合第一方面，在第一方面的第一种可能实现方式中，所述RAN服务器向所述终端发送切换命令之前，还包括：
向所述目标异制式小区所属的接入站点发送所述配置的资源的信息，以使所述接入站点基于所述配置的资源的信息进行资源配置。
在本发明实施例中，该RAN服务器通过向该目标异制式小区所属的接入站点发送所配置的资源的信息，使得该目标异制式小区所属的接入站点基于该配置的资源的信息进行资源配置，从而可以使得该终端接入至该接入站点，也即接入到该目标异制式小区中。
结合第一方面中上述任一种可能实现方式，在第一方面的第二种可能实现方式中，所述RAN服务器向所述终端发送切换命令之后，还包括：
向核心网设备发送制式指示消息，所述制式指示消息中携带所述终端的标识与所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式。
在本发明实施例中，该RAN服务器向该终端发送切换命令后，还向核心网设备发送制式指示消息，使得该核心网设备可以基于该制式指示消息进行进一步地操作，如更改该终端的计费策略和安全机制等，从而保证了异制式小区间切换的完整性。
第二方面，提供了一种异制式小区间切换的方法，所述方法包括：
第一接入网设备接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
所述第一接入网设备根据所述测量报告，确定所述终端的目标异制式小区；
所述第一接入网设备通过所述第一接入网设备和所述目标异制式小区所属的第二接入网设备之间的通信接口，向所述第二接入网设备发送切换请求消息，所述切换请求消息用于请求所述第二接入网设备为所述终端在所述目标异制式小区中配置资源，所述切换请求消息携带所述终端的标识和所述目标异制式小区的标识，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
所述第一接入网设备通过所述通信接口，接收所述第二接入网设备发送的切换响应消息，所述切换响应消息携带所述配置的资源的信息；
所述第一接入网设备向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述配置的资源的信息；
其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
在本发明实施例中，第一接入网设备根据测量报告，确定目标异制式小区后，当该目标异制式小区对应的接入站点不属于该第一接入网设备时，该第一接入网设备将通过第一接入网设备和目标异制式小区所属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息，以使该第二接入网设备为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息返回至该第一接入网设备，再由该第一接入网设备将该配置的资源的信息发送给该 终端，使得该终端接入到该目标异制式小区中，在异制式小区切换过程中，无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
结合第二方面，在第二方面的第一种可能实现方式中，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
所述第一接入网设备和所述第二接入网设备均为基站。
在本发明实施例中，该第一接入网设备和该第二接入网设备可以均为RAN服务器，也可以均为基站，增加了该异制式小区间切换的适用性。
结合第二方面中上述任一种可能实现方式，在第二方面的第二种可能实现方式中，所述第一接入网设备向所述终端发送切换命令之后，还包括：
所述第一接入网设备向所述第二接入网设备发送序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，所述未成功向所述终端发送的数据包的序列号用于所述第二接入网设备重新发送所述未成功向所述终端发送的数据包的序列号对应的数据包，所述传输过程中丢失的数据包的序列号用于所述第二接入网设备请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
在本发明实施例中，在异制式小区间切换的过程中，该第一接入网设备向该第二接入网设备发送序列号状态转移消息，以使得当该序列号状态转移消息包括该未成功发送给所述终端的数据包的序列号时，该第二接入网设备重新发送未成功发送给所述终端的数据包的序列号对应的数据包，当该序列号状态转移消息包括该传输过程中丢失的数据包的序列号时，该第二接入网设备请求终端重新发送对应的数据包，当该序列号状态转移消息包括该未成功发送给所述终端的数据包的序列号和该传输过程中丢失的数据包的序列号时，该第二接入网设备重新发送未成功发送给所述终端的数据包的序列号对应的数据包，并请求终端重新发送对应的数据包，如此，在切换过程中可以尽量较少数据包的丢失，从而提高了数据传输的可靠性。
结合第二方面中上述任一种可能实现方式，在第二方面的第三种可能实现方式中，所述第一接入网设备接收终端发送的测量报告之前，还包括：
在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，接收所述第二接入网设备发送的所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
在本发明实施例中，在建立该第一接入网设备与该第二接入网设备之间的通信连接时，彼此相互交换自身的设备标识、自身所管理的所有小区的小区标识和通信制式信息，从而使得该第一接入网设备可以基于所确定的目标异制式小区的标识，确定该目标异制式小区所属的第二接入网设备。
第三方面，提供了一种异制式小区间切换的方法，所述方法包括：
第二接入网设备接收第一接入网设备发送的切换请求消息，所述切换请求消息携带终端的标识和目标异制式小区的标识，所述第一接入网设备为所述终端所在服务小区所属的接入网设备；
所述第二接入网设备根据所述切换请求消息，为所述终端在所述目标异制式小区中配置资源；
所述第二接入网设备向所述第一接入网设备发送切换响应消息，所述切换响应消息携带所述配置的资源的信息；
其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
在本发明实施例中，该第二接入网设备接收到该第一接入网设备发送的切换请求消息后，基于该终端的标识和目标异制式小区的标识，为该终端在该目标异制式小区内配置资源，并将所配置的资源的信息发送至该第一接入网设备中，从而使得该第一接入网设备获取到所配置的资源的信息，并将所配置的资源的信息和该目标异制式小区的标识发送给该终端，以使该终端切换至该目标异制式小区中，在该异制式小区切换过程中，无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
结合第三方面，在第三方面的第一种可能实现方式中，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
所述第一接入网设备和所述第二接入网设备均为基站。
在本发明实施例中，该第一接入网设备和该第二接入网设备可以均为RAN服务器，也可以均为基站，增加了该异制式小区间切换的适用性。
结合第三方面中上述任一种可能的实现方式，在第三方面的第二种可能实现方式中，所述第二接入网设备向所述第一接入网设备发送切换响应消息之后，还包括：
所述第二接入网设备向核心网设备发送路径切换请求消息，所述路径切换请求消息中携带所述目标异制式小区的制式信息，所述制式信息用于指示所述 目标异制式小区采用的通信制式；
所述第二接入网设备接收所述核心网设备发送的路径切换响应消息，所述路径切换响应消息中携带数据通道信息，所述数据通道信息用于指示传输所述核心网设备与所述终端之间的数据的通道。
在本发明实施例中，当目标异制式小区所属的接入站点不同属于该第一接入网设备时，核心网设备与终端之间传输数据的路径也发生了改变，也即是，由原来通过第一接入网设备传输核心网设备与该终端之间的数据，变更为通过该第二接入网设备传输该核心网设备与该终端之间的数据，因此，该第二接入网设备向该核心网发送路径切换请求消息，以使得该核心网设备建立与该第二接入网设备之间的数据通道。另外，在该路径切换请求消息中携带该目标异制式小区的制式信息，以使的该核心网设备可以基于该目标异制式小区的制式信息，进行进一步地处理，例如，更改该终端的计费策略等。
结合第三方面中上述任一种可能的实现方式，在第三方面的第三种可能实现方式中，所述第二接入网设备向所述第一接入网设备发送切换响应消息之前，还包括：
所述第二接入网设备向所述目标异制式小区所属的目标接入站点发送所述配置的资源的信息，以使所述目标接入站点基于所述配置的资源的信息进行资源配置。
在本发明实施例中，该第二接入网设备向该目标异制式小区所属的目标接入站点发送所配置的资源的信息，可以使得该目标异制式小区所属的目标接入站点基于所配置的资源的信息进行资源配置，进而使得该终端接入到该目标异制式小区中。
结合第三方面中上述任一种可能的实现方式，在第三方面的第四种可能实现方式中，所述接收所述核心网发送的路径切换响应消息之后，还包括：
所述第二接入网设备接收所述第一接入网设备发送的序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
若所述序列号状态转移消息携带所述未成功发送给所述终端的数据包的序列号，则所述第二接入网设备重新发送所述未成功发送给所述终端的数据包的序列号对应的数据包；和/或，
若所述序列号状态转移消息携带所述传输过程中丢失的数据包的序列号， 则所述第二接入网设备发送重发请求消息，所述重发请求消息用于请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
在本发明实施例中，在异制式小区间切换的过程中，该第二接入网设备接收该第一接入网设备发送序列号状态转移消息，以使得当该序列号状态转移消息包括该未成功发送给所述终端的数据包的序列号时，该第二接入网设备重新发送未成功发送给所述终端的数据包的序列号对应的数据包，当该序列号状态转移消息包括该传输过程中丢失的数据包的序列号时，该第二接入网设备请求终端重新发送对应的数据包，当该序列号状态转移消息包括该未成功发送给所述终端的数据包的序列号和该传输过程中丢失的数据包的序列号时，该第二接入网设备重新发送未成功发送给所述终端的数据包的序列号对应的数据包，并请求终端重新发送对应的数据包，如此，在切换过程中可以尽量较少数据包的丢失，从而提高了数据传输的可靠性。
结合第三方面中上述任一种可能的实现方式，在第三方面的第五种可能实现方式中，所述第二接入网设备接收所述第一接入网设备发送的切换请求消息之前，还包括：
在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，向所述第一接入网设备发送所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
在本发明实施例中，在建立该第一接入网设备与该第二接入网设备之间的通信连接时，彼此相互交换自身的设备标识、自身所管理的所有小区的小区标识和通信制式信息，从而使得该第一接入网设备可以基于所确定的目标异制式小区的标识，确定该目标异制式小区所属的第二接入网设备。
第四方面，提供了一种无线接入网络RAN服务器，包括：
接收模块，用于接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
确定模块，用于根据所述接收模块接收的所述测量报告，确定所述终端的目标异制式小区，并在所述目标异制式小区内为所述终端配置资源，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
发送模块，用于向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述确定模块确定的所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述配置的资源的信息；
其中，所述RAN服务器用于管理所述终端的服务小区和所述目标异制式小区，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
结合第四方面，在第四方面的第一种可能实现方式中，所述发送模块还用于：
向所述目标异制式小区所属的接入站点发送所述配置的资源的信息，以使所述接入站点基于所述配置的资源的信息进行资源配置。
结合第四方面中上述任一种可能实现方式，在第四方面的第二种可能实现方式中，所述发送模块还用于：
向核心网设备发送制式指示消息，所述制式指示消息中携带所述终端的标识与所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式。
第五方面，提供了一种第一接入网设备，其特征在于，包括：
第一接收模块，用于接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
确定模块，用于所述第一接收模块接收的根据所述测量报告，确定所述终端的目标异制式小区；
第一发送模块，用于通过所述第一接入网设备和所述确定模块确定的所述目标异制式小区所属的第二接入网设备之间的通信接口，向所述第二接入网设备发送切换请求消息，所述切换请求消息用于请求所述第二接入网设备为所述终端在所述目标异制式小区中配置资源，所述切换请求消息携带所述终端的标识和所述目标异制式小区的标识，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
第二接收模块，用于通过所述通信接口，接收所述第二接入网设备发送的切换响应消息，所述切换响应消息携带所述配置的资源的信息；
第二发送模块，用于向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述第二接收模块接收的所述配置的资源的信息；
其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
结合第五方面，在第五方面的第一种可能实现方式中，所述第一接入网设 备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
所述第一接入网设备和所述第二接入网设备均为基站。
结合第五方面中上述任一种可能实现方式，在第五方面的第二种可能实现方式中，所述第二发送模块还用于：
向所述第二接入网设备发送序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，所述未成功向所述终端发送的数据包的序列号用于所述第二接入网设备重新发送所述未成功向所述终端发送的数据包的序列号对应的数据包，所述传输过程中丢失的数据包的序列号用于所述第二接入网设备请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
结合第五方面中上述任一种可能实现方式，在第五方面的第三种可能实现方式中，所述第一接收模块还用于在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，接收所述第二接入网设备发送的所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
第六方面，提供了一种第二接入网设备，其特征在于，包括：
接收模块，用于接收第一接入网设备发送的切换请求消息，所述切换请求消息携带终端的标识和目标异制式小区的标识，所述第一接入网设备为所述终端所在服务小区所属的接入网设备；
配置模块，用于根据所述接收模块接收的所述切换请求消息，为所述终端在所述目标异制式小区中配置资源；
发送模块，用于向所述第一接入网设备发送切换响应消息，所述切换响应消息携带所述配置模块配置的资源的信息；
其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
结合第六方面，在第六方面的第一种可能实现方式中，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
所述第一接入网设备和所述第二接入网设备均为基站。
结合第六方面中上述任一种可能实现方式，在第六方面的第二种可能实现方式中，所述发送模块，还用于向核心网设备发送路径切换请求消息，所述路径切换请求消息中携带所述目标异制式小区的制式信息，所述制式信息用于指 示所述目标异制式小区采用的通信制式；
所述接收模块，还用于接收所述核心网设备发送的路径切换响应消息，所述路径切换响应消息中携带数据通道信息，所述数据通道信息用于指示传输所述核心网设备与所述终端之间的数据的通道。
结合第六方面中上述任一种可能实现方式，在第六方面的第三种可能实现方式中，所述发送模块还用于：
向所述目标异制式小区所属的目标接入站点发送所述配置的资源的信息，以使所述目标接入站点基于所述配置的资源的信息进行资源配置。
结合第六方面中上述任一种可能实现方式，在第六方面的第四种可能实现方式中，所述接收模块，还用于接收所述第一接入网设备发送的序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
所述发送模块还用于当所述接收模块接收的所述序列号状态转移消息携带所述未成功发送给所述终端的数据包的序列号时，重新发送所述未成功发送给所述终端的数据包的序列号对应的数据包；
所述发送模块，还用于当所述接收模块接收的所述序列号状态转移消息携带所述传输过程中丢失的数据包的序列号时，发送重发请求消息，所述重发请求消息用于请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
结合第六方面中上述任一种可能实现方式，在第六方面的第五种可能实现方式中，所述发送模块还用于：
在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，向所述第一接入网设备发送发送所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
第七方面，提供了一种无线接入网络RAN服务器，所述RAN服务器包括发射机、接收机以及分别与所述发射机和接收机连接的处理器：
所述接收机，用于接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
所述处理器，用于根据所述接收机接收的所述测量报告，确定所述终端的目标异制式小区，并在所述目标异制式小区内为所述终端配置资源，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
所述发射机，用于向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述处理器确定的所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述配置的资源的信息；
其中，所述RAN服务器用于管理所述终端的服务小区和所述目标异制式小区，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
结合第七方面，在第七方面的第一种可能实现方式中，所述发射机还用于：
向所述目标异制式小区所属的接入站点发送所述配置的资源的信息，以使所述接入站点基于所述配置的资源的信息进行资源配置。
结合第七方面中上述任一种可能实现方式，在第七方面的第二种可能实现方式中，所述发射机还用于：
向核心网设备发送制式指示消息，所述制式指示消息中携带所述终端的标识与所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式。
第八方面，提供了一种第一接入网设备，其特征在于，所述第一接入网设备包括发射机、接收机以及分别与所述发射机和接收机连接的处理器：
所述接收机，用于接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
所述处理器，用于根据所述接收机接收的所述测量报告，确定所述终端的目标异制式小区；
所述发射机，用于通过所述第一接入网设备和所述处理器确定的所述目标异制式小区所属的第二接入网设备之间的通信接口，向所述第二接入网设备发送切换请求消息，所述切换请求消息用于请求所述第二接入网设备为所述终端在所述目标异制式小区中配置资源，所述切换请求消息携带所述终端的标识和所述目标异制式小区的标识，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
所述接收机，还用于通过所述通信接口，接收所述第二接入网设备发送的切换响应消息，所述切换响应消息携带所述配置的资源的信息；
所述发射机，还用于向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述接收机接收的所述配置的资源的信息；
其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
结合第八方面，在第八方面的第一种可能实现方式中，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
所述第一接入网设备和所述第二接入网设备均为基站。
结合第八方面中上述任一种可能实现方式，在第八方面的第二种可能实现方式中，所述发射机还用于：
向所述第二接入网设备发送序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，所述未成功向所述终端发送的数据包的序列号用于所述第二接入网设备重新发送所述未成功向所述终端发送的数据包的序列号对应的数据包，所述传输过程中丢失的数据包的序列号用于所述第二接入网设备请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
结合第八方面中上述任一种可能实现方式，在第八方面的第三种可能实现方式中，所述接收机还用于：
在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，接收所述第二接入网设备发送的所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
第九方面，提供了一种第二接入网设备，其特征在于，所述第二接入网设备包括发射机、接收机以及分别与所述发射机和接收机连接的处理器：
所述接收机，用于接收第一接入网设备发送的切换请求消息，所述切换请求消息携带终端的标识和目标异制式小区的标识，所述第一接入网设备为所述终端所在服务小区所属的接入网设备；
所述处理器，用于根据所述接收机接收的所述切换请求消息，为所述终端在所述目标异制式小区中配置资源；
所述发射机，用于向所述第一接入网设备发送切换响应消息，所述切换响应消息携带所述处理器配置的资源的信息；
其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
结合第九方面，在第九方面的第一种可能实现方式中，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
所述第一接入网设备和所述第二接入网设备均为基站。
结合第九方面中上述任一种可能的实现方式，在第九方面的第二种可能实现方式中，所述发射机，还用于向核心网设备发送路径切换请求消息，所述路径切换请求消息中携带所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式；
所述接收机，还用于接收所述核心网设备发送的路径切换响应消息，所述路径切换响应消息中携带数据通道信息，所述数据通道信息用于指示传输所述核心网设备与所述终端之间的数据的通道。
结合第九方面中上述任一种可能的实现方式，在第九方面的第三种可能实现方式中，所述发射机还用于：
向所述目标异制式小区所属的目标接入站点发送所述配置的资源的信息，以使所述目标接入站点基于所述配置的资源的信息进行资源配置。
结合第九方面中上述任一种可能的实现方式，在第九方面的第四种可能实现方式中，所述接收机，还用于接收所述第一接入网设备发送的序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
所述发射机，还用于当所述接收机接收的所述序列号状态转移消息携带所述未成功发送给所述终端的数据包的序列号时，重新发送所述未成功发送给所述终端的数据包的序列号对应的数据包；和/或，
所述发射机，还用于当所述接收机接收的所述序列号状态转移消息携带所述传输过程中丢失的数据包的序列号时，发送重发请求消息，所述重发请求消息用于请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
结合第九方面中上述任一种可能的实现方式，在第九方面的第五种可能实现方式中，所述发射机还用于：
在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，向所述第一接入网设备发送所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
本发明实施例提供的技术方案带来的有益效果是：在异制式小区间切换过程中，RAN服务器根据终端上报的测量报告，确定该终端的目标异制式小区，即确定该终端准备接入的相邻异制式小区，之后，该RAN服务器为该终端在 该目标异制式小区中配置资源，并将所配置的资源的信息以及该目标异制式小区的标识发送给该终端，从而使得该终端切换至该目标异制式小区中，由于在该异制式小区间切换的过程中无需跨越核心网，因此，减少了源核心网与目标核心网之间的信令交互。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述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1A是根据一示例性实施例示出的一种网络架构示意图。
图1B是根据图1A实施例示出的一种实施环境示意图。
图1C是根据一示例性实施例示出的一种异制式小区间切换方法流程图。
图2是根据另一示例性实施例示出的一种异制式小区间切换方法流程图。
图3是根据另一示例性实施例示出的一种异制式小区间切换方法流程图。
图4是根据另一示例性实施例示出的一种异制式小区间切换方法流程图。
图5A是根据另一示例性实施例示出的一种异制式小区间切换方法流程图。
图5B是图5A实施例所涉及的一种实施环境示意图。
图6是根据一示例性实施例示出的一种RAN服务器的结构示意图。
图7是根据一示例性实施例示出的一种第一接入网设备的结构示意图。
图8是根据一示例性实施例示出的一种第二接入网设备的结构示意图。
图9是根据另一示例性实施例示出的一种RAN服务器900的结构示意图。
图10是根据另一示例性实施例示出的一种第一接入网设备1000的结构示意图。
图11是根据另一示例性实施例示出的一种第二接入网设备1100的结构示意图。
图12是根据一示例性实施例示出的一种系统框图。
图13是根据另一示例性实施例示出的一种系统框图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
图1A是根据一示例性实施例示出的一种网络架构示意图，该网络架构中主要包括一个核心网(Core Network，CN)001、至少一个中心单元(Central Unit，CU)002以及至少一个分布单元(Distributed Unit，DU)003，其中，该核心网001与至少一个CU002连接，该至少一个CU002中每个CU002与至少一个DU003连接，且每个CU002与CU002之间存在通信接口。其中，CU002可以提供高层协议栈，DU003可以提供底层协议栈，以长期演进(Long Term Evolution，LTE)协议为例，该CU002可以包括无线资源控制(Radio Resource Control，RRC)层和分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层，相应地，该DU003可以包括无线链路层控制(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层和物理层。其中，在一种可能的实现方式中，该CU002与该DU003之间的协议层划分也可以采用其它方式，在本发明实施例对此不做限定。另外，该至少一个DU003可以为至少一种制式的接入站点，本发明实施例中的异制式小区间切换方法可以基于该网络架构实现。
图1B是根据图1A实施例示出的一种实施环境示意图。该实施环境中包括一个核心网设备110、至少一个无线接入网络(Radio Access Network，RAN)服务器120以及至少一种制式接入站点130。其中，该核心网设备110分别与该至少一个RAN服务器120连接，即该核心网110设备用于管理该至少一个RAN服务器120。
其中，该至少一个RAN服务器120之间存在通信接口，且该至少一个RAN服务器120下均存在至少一种制式接入站点130，也即是，对于该至少一个RAN服务器中120的每个RAN服务器120，该RAN服务器120中可以部署一种制式的接入站点，例如，该一种制式的接入站点可以仅包括新无线接入技术(New Radio Access Technology，NR)站点，在这种情况下，该RAN服务器120与该NR站点就相当于一个NR基站。当然，该RAN服务器120下也可以部署多种异制式的接入站点，且该多种异制式的接入站点所采用的通信制式不相同，例如，该多种异制式接入站点可以包括LTE站点、NR站点以及无线保真接入点(Wireless Fidelity Access Point，WiFi AP)等，终端通过接入站点即可接入到网络的小区中。其中，作为一种新的无线接入技术，NR与LTE相比较， 能够提供更短的时延，更大的带宽，并且能够支持大量的连接，能够满足移动通信日益增长的需求。
需要说明的是，在本发明实施例中，图1B所示的示例性实施环境可以看作是图1A所示的网络架构中的一种特殊情况，也即是，该图1A中的CN001相当于该图1B中的核心网设备110，CU002相当于该图1B中的RAN服务器120，该图1A中的DU003相当于该图1B中的一种制式接入站点130。
另外，还需要说明的是，在实际实现过程中，终端需要通过接入站点与RAN服务器120之间进行交互，也即是，终端先把通信数据发送到该接入站点，再由该接入站点转发至该RAN服务器120，同理，RAN服务器120也同样需要通过接入站点与终端之间进行交互，在本发明实施例中省略对该过程的描述，也即是，在本实施例中均以终端与RAN服务器120直接交互的方式进行描述。
图1C是根据一示例性实施例示出的一种异制式间小区切换方法流程图，该异制式小区间切换方法可以包括如下几个步骤：
步骤101：无线接入网络RAN服务器接收终端发送的测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值。
步骤102：该RAN服务器根据该测量报告，确定该终端的目标异制式小区，并在该目标异制式小区内为该终端配置资源，该配置的资源为该终端接入该目标异制式小区时所使用的资源。
步骤103：该RAN服务器向该终端发送切换命令，该切换命令用于指示该终端切换至该目标异制式小区，该切换命令携带该目标异制式小区的标识和该配置的资源的信息，其中，该RAN服务器用于管理该终端的服务小区和该目标异制式小区，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
在本发明实施例中，在异制式小区间切换过程中，RAN服务器根据终端上报的测量报告，确定该终端的目标异制式小区，也即是，确定该终端准备接入的相邻异制式小区，之后，该RAN服务器为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息以及该目标异制式小区的标识发送给该终端，从而使得该终端切换至该目标异制式小区中，由于在异制式小区间切换的过程中无需跨越核心网，因此，减少了源核心网与目标核心网之间的信令交互。
可选地，该RAN服务器向该终端发送切换命令之前，还包括：
向该目标异制式小区所属的接入站点发送该配置的资源的信息，以使该接入站点基于该配置的资源的信息进行资源配置。
可选地，该RAN服务器向该终端发送切换命令之后，还包括：
向核心网设备发送制式指示消息，该制式指示消息中携带该终端的标识与该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式。
上述所有可选技术方案，均可按照任意结合形成本发明的可选实施例，本发明实施例对此不再一一赘述。
图2是根据另一示例性实施例示出的一种异制式间小区切换方法流程图，该异制式小区间切换方法可以包括如下几个步骤：
步骤201：第一接入网设备接收终端发送的测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值。
步骤202：该第一接入网设备根据该测量报告，确定该终端的目标异制式小区。
步骤203：该第一接入网设备通过该第一接入网设备和该目标异制式小区所属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息，该切换请求消息用于请求该第二接入网设备为该终端在该目标异制式小区中配置资源，该切换请求消息携带该终端的标识和该目标异制式小区的标识，该配置的资源为该终端接入该目标异制式小区时所使用的资源。
步骤204：该第一接入网设备通过该通信接口，接收该第二接入网设备发送的切换响应消息，该切换响应消息携带该配置的资源的信息。
步骤205：该第一接入网设备向该终端发送切换命令，该切换命令用于指示该终端切换至该目标异制式小区，该切换命令携带该目标异制式小区的标识和该配置的资源的信息，其中，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
在本发明实施例中，第一接入网设备根据测量报告，确定该终端的目标异制式小区后，当该目标异制式小区所属的接入站点不属于该第一接入网设备时，该第一接入网设备将通过第一接入网设备和目标异制式小区所属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息，以使该第 二接入网设备为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息返回至该第一接入网设备，并由该第一接入网设备将该配置的资源的信息和该目标异制式小区的标识发送给该终端，使得该终端切换到该目标异制式小区中，在异制式小区间切换过程中无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
可选地，该第一接入网设备和该第二接入网设备均为无线接入网络RAN服务器；或者，
该第一接入网设备和该第二接入网设备均为基站。
可选地，该第一接入网设备向该终端发送切换命令之后，还包括：
该第一接入网设备向该第二接入网设备发送序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，该未成功向该终端发送的数据包的序列号用于该第二接入网设备重新发送该未成功向该终端发送的数据包的序列号对应的数据包，该传输过程中丢失的数据包的序列号用于该第二接入网设备请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
可选地，该第一接入网设备接收终端发送的测量报告之前，还包括：
在建立该第一接入网设备与该第二接入网设备之间的通信连接时，接收该第二接入网设备发送的该第二接入网设备的设备标识、该第二接入网设备所管理的所有小区的小区标识和通信制式信息。
上述所有可选技术方案，均可按照任意结合形成本发明的可选实施例，本发明实施例对此不再一一赘述。
图3是根据一另示例性实施例示出的一种异制式间小区切换方法流程图，该异制式小区间切换方法可以包括如下几个步骤：
步骤301：第二接入网设备接收第一接入网设备发送的切换请求消息，该切换请求消息携带终端的标识和目标异制式小区的标识，该第一接入网设备为该终端所在服务小区所属的接入网设备。
步骤302：该第二接入网设备根据该切换请求消息，为该终端在该目标异制式小区中配置资源。
步骤303：该第二接入网设备向该第一接入网设备发送切换响应消息，该切换响应消息携带该配置的资源的信息，其中，该服务小区采用的通信制式与 该目标异制式小区采用的通信制式不同。
在本发明实施例中，在异制式小区间切换的过程中，当目标异制式小区所属的接入站点不属于第一接入网设备时，该第一接入网设备向该目标异制式小区所属的第二接入网设备发送切换请求消息，相应地，该第二接入网设备接收到该切换请求消息后，基于该切换请求消息中所携带的终端的标识和目标异制式小区的标识，为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息发送至该第一接入网设备，该第一接入网设备将所配置的资源的信息以及该目标异制式小区的标识发送至该终端，使得该终端切换至该目标异制式小区中，在异制式小区间切换的过程中无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
可选地，该第一接入网设备和该第二接入网设备均为无线接入网络RAN服务器；或者，
该第一接入网设备和该第二接入网设备均为基站。
可选地，该第二接入网设备向该第一接入网设备发送切换响应消息之后，还包括：
该第二接入网设备向核心网设备发送路径切换请求消息，该路径切换请求消息中携带该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式；
该第二接入网设备接收该核心网设备发送的路径切换响应消息，该路径切换响应消息中携带数据通道信息，该数据通道信息用于指示传输该核心网设备与该终端之间的数据的通道。
可选地，该第二接入网设备向该第一接入网设备发送切换响应消息之前，还包括：
该第二接入网设备向该目标异制式小区所属的目标接入站点发送该配置的资源的信息，以使该目标接入站点基于该配置的资源的信息进行资源配置。
可选地，接收该核心网发送的路径切换响应消息之后，还包括：
该第二接入网设备接收该第一接入网设备发送的序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
若该序列号状态转移消息携带该未成功发送给该终端的数据包的序列号，则该第二接入网设备重新发送该未成功发送给该终端的数据包的序列号对应 的数据包；和/或，
若该序列号状态转移消息携带该传输过程中丢失的数据包的序列号，则该第二接入网设备发送重发请求消息，所述重发请求消息用于请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
可选地，该第二接入网设备接收该第一接入网设备发送的切换请求消息之前，还包括：
在建立该第一接入网设备与该第二接入网设备之间的通信连接时，向该第一接入网设备发送该第二接入网设备的设备标识、该第二接入网设备所管理的所有小区的小区标识和通信制式信息。
上述所有可选技术方案，均可按照任意结合形成本发明的可选实施例，本发明实施例对此不再一一赘述。
图4是根据另一示例性实施例示出的一种异制式小区间切换方法流程图，本实施例以多方交互方式实现该异制式小区间切换方法为例进行说明，该异制式小区间切换方法可以包括如下几个步骤：
步骤401：终端向RAN服务器发送测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及相邻异制式小区的测量值。
在实际应用过程中，由于各种异制式网络的广泛覆盖，因此，终端在接入网络的过程中，很可能从一种制式小区移动到另一种制式小区，此时，为了不影响该终端通信业务的正常运行，需要对该终端在异制式小区间进行切换。其中，请参考图1B，在本发明实施例中，以该目标异制式小区所属的接入站点属于该RAN服务器进行说明，也即是，该RAN服务器用于同时管理该终端的服务小区和该目标异制式小区，且该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
其中，为了确定该终端是否移动到了相邻异制式小区中，也即是，为了确定是否需要对该终端进行切换，终端每隔预设时长，或者，该终端检测到满足测量事件时，例如，该终端检测到相邻异制式小区的测量值大于预设门限值等，就会向RAN服务器发送测量报告，该测量报告中包括该终端所在服务小区的相邻异制式小区的标识及相邻异制式小区的测量值，从而使得该RAN服务器可以基于该测量报告，确定该终端需要切换至哪个相邻异制式小区。其中，该相邻异制式小区标识用于唯一标识一个相邻异制式小区，该相邻异制式小区的 测量值通常为参考信号测量值，每个相邻异制式小区标识与该相邻异制式小区的测量值一一对应。
其中，该预设时长可以由用户根据实际需求自定义设置，也可以由终端默认设置，本发明实施例对此不做限定。
其中，上述预设门限值可以由用户根据实际需求自定义设置，也可以由终端默认设置，本发明实施例对此不做限定。
其中，该测量报告可以是由终端自身测量得到，也可以是由与该终端具有连接关系的其它设备测得后发送给该终端，本发明实施例对此不做限定。其中，测量该测量报告的具体实现方式可以参见现有技术，这里不做详细描述。
需要说明的是，在本发明实施例中，仅是以实现异制式小区间切换为例进行说明，在另一实施例中，本发明实施例中所涉及的切换方法同样可以适用于实现同制式小区间的切换，本发明实施例不对同制式小区间切换进行详细描述。
步骤402：该RAN服务器接收该测量报告，基于该测量报告，确定目标异制式小区，并在该目标异制式小区内为该终端配置资源，该配置的资源为该终端接入该目标异制式小区时所使用的资源。
其中，在一种可能的实现方式中，该RAN服务器接收该测量报告，基于该测量报告，确定目标异制式小区的具体实现方式可以包括：从该相邻异制式小区的测量值中，获取该相邻异制式小区的最大测量值，并将该相邻异制式小区的最大测量值对应的小区确定为该目标异制式小区。
需要说明的是，在本实施例中仅是以从该相邻异制式小区的测量值中，获取最大相邻异制式小区的测量值，并将该最大相邻异制式小区的测量值对应的小区确定为该目标异制式小区为例进行说明，在另一实施例中，还可以按照其它方式确定该目标异制式小区，本发明实施例对此不做限定。
其中，由于该RAN服务器下存在多种异制式的接入站点，并且，如上文所处，该RAN服务器用于管理该多种异制式的接入站点，因此，该RAN服务器确定目标异制式小区后，直接为该终端在该目标异制式小区中配置资源。
步骤403：该RAN服务器向该目标异制式小区所属的接入站点发送所配置的资源的信息，以使该接入站点基于该配置的资源的信息进行资源配置。
在实现切换过程中，该终端接入到该目标异制式小区中之前，需要该目标异制式小区所属的接入站点做好接收该终端接入的准备，因此，该RAN服务 器为该终端在该目标异制式小区中配置资源后，需要将配置的资源的信息发送该给目标异制式小区所属的接入站点，以使该接入站点基于该配置的资源的信息进行资源配置，以等待该终端的接入。例如，该目标异制式小区所属的接入站点基于该配置的资源的信息，对该接入站点上的无线链路控制协议(Radio Link Control，RLC)层、媒体接入控制(Media Access Control，MAC)层以及物理(Physical Layer，PHY)层进行资源配置等。
步骤404：该RAN服务器向该终端发送切换命令，该切换命令中至少携带该目标异制式小区的标识和配置的资源的信息。
该RAN服务器向该目标异制式小区所属的接入站点发送配置的资源的信息后，需要将该配置的资源的信息发送至该终端，同时需要通知该终端进行切换，即该RAN服务器向该终端发送切换命令，其中，在一种可能的实现方式中，该切换命令可以通过无线资源控制协议(Radio Resource Control，RRC)消息发送给终端。另外，为了便于终端获知需要切换到哪个相邻异制式小区中，该切换命令中同时携带了该目标异制式小区的标识和配置的资源的信息。
步骤405：该终端接收该切换命令，并基于该配置的资源的信息和该目标异制式小区的标识切换至该目标异制式小区。
该终端接收该切换命令后，从该切换命令中提取配置的资源的信息和该目标异制式小区的标识，该终端基于该配置的资源的信息进行信息配置，并基于该目标异制式小区的标识，与该目标异制式小区所属的接入站点进行同步。其中，终端基于该配置的资源的信息进行信息配置，以及终端基于该目标异制式小区的标识与该目标异制式小区所属的接入站点进行同步的具体实现方式可以参见现有技术，例如，可以参见现有技术中LTE的随机接入过程，本发明实施例对此不做限定。
在一种可能的实现方式中，终端切换至该目标异制式小区后，通过该目标异制式小区向该RAN服务器发送配置信息完成消息，该配置信息完成消息用于指示该终端已完成信息配置，也即是，该终端已接入至该目标异制式小区中。
至此，本实施例实现了异制式小区间的切换。另外，由于该终端切换至异制式小区后，核心网设备对该终端的计费策略、安全机制等均可能发生了变化，因此，在本发明实施例中，在切换完成后，还需要通知核心网设备该终端接入了相邻异制式小区中，具体请参见如下步骤406。
步骤406：该RAN服务器向核心网设备发送制式指示消息，该制式指示 消息中携带终端的标识与该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式。
该RAN服务器接收到上述配置信息完成消息后，向核心网设备发送制式指示消息，已通知核心网设备该终端所接入的目标异制式小区的制式信息，以便与该核心网设备基于该制式信息进行进一步的操作，例如，更改该终端的计费策略或安全机制等。
另外，在一种可能的实现方式中，该核心网设备收到该RAN服务器发送的制式指示消息后，可以向该RAN服务器发送制式指示确认消息，该制式指示确认消息用于制式该核心网设备已经接收到该制式指示消息，以免该RAN服务器重复发送该制式指示消息。
在本发明实施例中，在异制式小区间切换过程中，RAN服务器根据终端上报的测量报告，确定该终端的目标异制式小区，也即是，确定该终端准备接入的相邻异制式小区，之后，该RAN服务器为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息以及该目标异制式小区的标识发送给该终端，从而使得该终端切换至该目标异制式小区中，由于在异制式小区间切换的过程中无需跨越核心网，因此，减少了源核心网与目标核心网之间的信令交互。
图5A是根据另一示例性实施例示出的一种异制式小区间切换方法流程图，本实施例以多方交互方式实现该异制式小区间切换方法为例进行说明，该异制式小区间切换方法可以包括如下几个步骤：
步骤501：终端向第一接入网设备发送测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值。
在本发明实施例中，以该目标异制式小区所属的接入站点不属于该第一接入网设备进行说明，也即是，该终端的服务小区所属的接入站点与该目标异制式小区所属的接入站点不同属于该第一接入网设备，该目标异制式小区所属的接入站点属于第二接入网设备。其中，该第一接入网设备与该第二接入网设备之间存在通信接口，且该第一接入网设备与该第二接入网设备属于同一核心网设备，也即是，核心网设备用于管理该终端的服务小区与该目标异制式小区，且该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
其中，该第一接入网设备和该第二接入网设备可以均为RAN服务器，该第一接入网设备和该第二接入网设备也可以均为基站。
当该第一接入网设备和该第二接入网设备均为RAN服务器时，可参见图1B，本发明实施例中的异制式小区间切换是指该终端从一个RAN服务器所管理的服务小区切换至另一个RAN服务器所管理的异制式小区中。当该第一接入网设备和该第二接入网设备均为基站时，请参见图5B，本发明实施例中的异制式小区间切换是指该终端从一个基站下的服务小区切换至另一个基站下的异制式小区中。针对上述两种情况，其切换原理类似。
其中，终端向第一接入网设备发送测量报告的具体实现过程可以参见上述步骤401中终端向RAN服务器发送测量报告的实现过程，这里不再详细描述。
需要说明的是，在本发明实施例中，仅是以实现异制式小区间切换为例进行说明，在另一实施例中，本发明实施例所涉及的切换方法同样可以适用于实现同制式小区间的切换，本发明实施例不对同制式小区间切换进行详细描述。
步骤502：该第一接入网设备接收该测量报告，基于该测量报告，确定目标异制式小区。
其中，该第一接入网设备基于该测量报告，确定目标异制式小区的具体实现过程可以参见上述步骤402中RAN服务器基于该测量报告，确定目标异制式小区的实现过程，这里不再详细描述。
这里需要说明的是，为了便于第一接入网设备基于目标异制式小区的标识，确定该目标异制式小区所属的第二接入网设备，该第一接入网设备在建立与该第二接入网设备之间的通信连接时，该第一接入网设备与该第二接入网设备彼此之间可以相互交换自身所管理的小区信息。
具体地，在建立该第一接入网设备与该第二接入网设备之间的通信连接时，该第一接入网设备接收该第二接入网设备发送的该第二接入网设备的设备标识、该第二接入网设备所管理的所有小区的标识和通信制式信息。
其中，该设备标识用于唯一标识一个接入网设备，该通信制式信息用于唯一描述一个小区的通信制式。
步骤503：该第一接入网设备通过该第一接入网设备和该目标异制式小区所属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息，该切换请求消息用于请求该第二接入网设备为该终端在该目标异制式小区中配置资源，该切换请求消息携带该终端的标识和该目标异制式小区的标识，该配置的资源为该终端接入该目标异制式小区时所使用的资源。
其中，由该第一接入网设备通过该第一接入网设备和该目标异制式小区所 属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息可知，该第一接入网设备与该第二接入网设备之间存在通信接口，由此也可以说明该第一接入网设备与该第二接入网设备属于同一核心网，也即是，该核心网设备可以用于管理该第一接入网设备和该第二接入网设备。
该第一接入网设备向该第二接入网设备发送切换请求消息，以便由该第二接入网设备基于该终端的标识和该目标异制式小区的标识，为该终端在该目标异制式小区中配置切换所需要的资源。
步骤504：该第二接入网设备接收该第一接入网设备发送的切换请求消息，根据该切换请求消息，为该终端在该目标异制式小区中配置资源，该切换请求消息携带终端的标识和目标异制式小区的标识，该第一接入网设备为该终端所在服务小区所属的接入网设备。
该第二接入网设备接收该第一接入网设备发送的切换请求消息后，可以根据该目标异制式小区当前的使用情况，决策是否接受该切换请求消息，如果接受该切换请求，则该第二接入网设备为该终端在该目标异制式小区中配置资源，如果不接受该切换请求，向第一接入网设备发送切换失败响应消息，当该第二接入网设备不接受该切换请求时，需要第一接入网设备基于测量报告，重新确定另一个目标异制式小区，其后续实现过程与本发明实施例类似，这里不对该种情况进行详细描述。
步骤505：该第二接入网设备向该目标异制式小区所属的目标接入站点发送该配置的资源的信息，以使该目标接入站点基于该配置的资源的信息进行资源配置。
另外，该第二接入网设备向该目标接入站点发送配置的资源的信息的原理请参见上述步骤403中RAN服务器向该目标异制式小区所属的接入站点发送所配置的资源的信息的原理，这里不再详细描述。
步骤506：该第二接入网设备向该第一接入网设备发送切换响应消息，该切换响应消息携带所配置的资源的信息。
该第二接入网设备向该目标异制式小区所属的接入站点发送配置的资源的信息后，还需要将该配置的资源的信息通过该第一接入网设备发送给该终端，即该第二接入网设备向该第一接入网设备发送携带有所配置的资源的信息的切换响应消息。
步骤507：该第一接入网设备接收该第二接入网设备发送的切换响应消息， 向该终端发送切换命令，该切换命令中携带所配置的资源的信息和目标异制式小区的标识。
其中，该第一接入网设备接收该第二接入网设备发送的切换响应消息后，向该终端发送切换命令的具体实现过程可以参见上述步骤404中RAN服务器向该终端发送切换命令的实现过程，这里不再详细描述。
另外，该第一接入网设备向该终端发送切换命令后，还向该第二接入网设备发送序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个。
由于该终端即将切换至该第二接入网设备中，因此，在该第一接入网设备上所进行的业务在传输过程中就会终止，此时，为了能够保证数据传输的可靠性，该第一接入网设备需要通知该第二接入网设备该终端所涉及的业务运行情况，也即是，需要通知该第二接入网设备没能成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，以便于当该终端完全切换至该第二接入网设备下所管理的目标异制式小区中后，该第二接入网设备对上述没能成功发送给该终端数据包的序列号对应的数据包以及传输过程中丢失的数据包的序列号对应的数据包中至少一个进行进一步地处理，具体请参见如下步骤511至步骤512。
步骤508：该终端接收该切换命令，并基于所配置的资源的信息和该目标异制式小区的标识，切换至该目标异制式小区。
其中，该终端基于该配置的资源的信息和该目标异制式小区的标识切换至该目标异制式小区的具体实现过程可以参见上述步骤405，这里不再详细描述。
步骤509：该第二接入网设备向核心网设备发送路径切换请求消息，该路径切换请求消息中携带该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式。
在本发明实施例中，由于更换了第一接入网设备，也即是，终端在切换过程中，由第一接入网设备所管理的小区更换至第二接入网设备所管理的小区中，因此，终端与核心网设备之间传输数据的路径也发生了改变，即由原来通过第一接入网设备传输该终端与该核心网设备之间的数据，更改为通过第二接入网设备传输该终端与该核心网设备之间的数据。因此，该第二接入网设备在接收到该终端发送的配置信息完成消息后，需要向该核心网设备发送路径切换请求消息，以使该核心网设备更改与终端之间传输数据的路径。
另外，在一种可能的实现方式中，该路径切换请求消息中还可以携带该目标异制式小区的制式信息，以使该核心网设备确定可以基于该目标异制式小区的制式信息进行进一步的操作，例如，更改该终端的计费策略或安全机制等。
步骤510：核心网设备向该第二接入网设备发送的路径切换响应消息，该路径切换响应消息中携带数据通道信息。
该核心网设备接收到该第二接入网设备发送的路径切换请求消息后，建立与该第二接入网设备之间的数据通道，即上述数据通道信息用于指示传输该核心网设备与该终端之间的数据的通道，该核心网设备将该数据通道对应的数据通道信息发送至该第二接入网设备中，即该第二接入网设备接收该核心网设备发送的路径切换响应消息。
另外，该第二接入网设备接收到该核心网设备发送的路径切换响应消息后，确认该终端的数据链路已经全部搬移至该第二接入网设备上，该第二接入网设备可以向该第一接入网设备发送终端上下文释放消息，该终端上下文释放消息中携带该终端的标识，上下文释放消息用于指示该第一接入网设备释放该终端在该第一接入网设备中的上下文。
在一种可能的实现方式中，该第二接入网设备接收到该核心网设备发送的路径切换响应消息后，开始计时，并在指定时长后，再向该第一接入网设备发送终端上下文释放消息，如此当终端在切换前的小区与切换后的异制式小区间频繁切换时，可以避免需要重新建立上下文，从而变相地减少了切换时延。
其中，上述指定时长可以由用户根据实际需求自定义设置，也可以由第二接入网设备默认设置，本发明实施例对此不做限定。
至此，已实现了异制式小区间的切换。另外，在本发明实施例中，如步骤507所述，为了保证数据传输的可靠性，该第一接入网设备在向终端发送切换命令后，还向该第二接入网设备发送了序列号状态转移消息，因此，在该终端切换完成后，该第二接入网设备还需要对该列号状态转移消息中未成功发送给该终端的数据包的序列号对应的数据包以及该传输过程中丢失的数据包的序列号对应的数据包进行进一步的处理，具体实现过程请参见如下步骤511至步骤512。
步骤511：该第二接入网设备接收该序列号状态转移消息，从该序列号状态转移消息中获取该未成功发送给向该终端的数据包的序列号以及该传输过程中丢失的数据包的序列号中至少一个。
步骤512：该第二接入网设备对该未成功发送给该终端的数据包的序列号对应的数据包和该传输过程中丢失的数据包的序列号对应的数据包中至少一个进行进一步地处理。
其中，该第二接入网设备对该未成功发送给该终端的数据包的序列号对应的数据包和该传输过程中丢失的数据包的序列号对应的数据包中至少一个进行进一步地处理包括：若该序列号状态转移消息携带该未成功发送给该终端的数据包的序列号，则该第二接入网设备对该未成功发送给该终端的数据包的序列号对应的数据包进行重新发送，若该序列号状态转移消息携带该传输过程中丢失的数据包的序列号，则该第二接入网设备发送重发请求消息，该重发请求消息用于请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包，若该序列号状态转移消息携带该未成功发送给该终端的数据包的序列号和该传输过程中丢失的数据包的序列号，则该，则该第二接入网设备对该未成功发送给该终端的数据包的序列号对应的数据包进行重新发送，并发送重发请求消息，该重发请求消息用于请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
其中，该第二接入网设备请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包的具体实现过程可以包括：该第二接入网设备通过该目标异制式小区向该终端发送重传请求，该重传请求中携带该传输过程中丢失的数据包的序列号，该重传请求用于指示该终端对该传输过程中丢失的数据包的序列号对应的数据包进行重新发送。
当然，需要说明的是，在本发明实施例中，仅是以上述方法实现该第二接入网设备请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包为例进行说明，在另一实施例，还可能通过其它方式来实现该第二接入网设备请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包，本发明实施例对此不做限定。
在本发明实施例中，在异制式小区间切换过程中，第一接入网设备根据终端上报的测量报告，确定该终端的目标异制式小区，也即是，确定该终端准备接入的相邻异制式小区，之后，该第一接入网设备通过该第一接入网设备与该第二接入网设备之间的通信接口，向该目标异制式小区所属的第二接入网设备发送切换请求消息，使得该第二接入网设备为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息返回至该第一接入网设备，并由该第一接入 网设备将该配置的资源的信息发送给该终端，使得该终端接入到该目标异制式小区中，在异制式小区间切换的过程中无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
另外，这里需要说明的是，上述该第一接入网设备和该第二接入网设备均为基站是指，RAN服务器下只存在一种制式的接入站点，在该种情况下，可以看作是终端在两种异制式基站之间进行切换，且该两种异制式基站之间存在接口。具体地，请参考图5B，该第一RAN服务器下仅存在的一种制式接入站点为NR站点，且该NR站点可以是拉远的射频，而该NR站点协议层均部署在该第一RAN服务器中，也即是，此时的第一RAN服务器和NR站点作为一个整体可以看做是一个NR基站，同理，该第二RAN服务器下仅存在的一种制式接入站点为LTE站点，该LTE站点也可以是拉远的射频，该LTE站点协议层均部署在该第二RAN服务器中，也即是，此时的第二RAN服务器和该LTE站点作为一个整体可以看做是一个LTE基站，即eNB，此时，相当于NR基站与eNB之间存在接口，终端可以在该NR基站与该eNB之间进行切换，其具体实现过程如上文所述，这里不再详细描述。
图6是根据一示例性实施例示出的一种RAN服务器的结构示意图，该RAN服务器可以由软件、硬件或者两者的结合实现。该RAN服务器可以包括：
接收模块610，用于接收终端发送的测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值；
确定模块620，用于根据该接收模块610接收的该测量报告，确定该终端的目标异制式小区，并在该目标异制式小区内为该终端配置资源，该配置的资源为该终端接入该目标异制式小区时所使用的资源；
发送模块630，用于向该终端发送切换命令，该切换命令用于指示该终端切换至该确定模块620确定的目标异制式小区，该切换命令携带该目标异制式小区的标识和所配置的资源的信息，其中，该RAN服务器用于管理该终端的服务小区和该目标异制式小区，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
可选地，该发送模块630还用于：
向该目标异制式小区所属的接入站点发送该配置的资源的信息，以使该接入站点基于该配置的资源的信息进行资源配置。
可选地，该发送模块630还用于：
向核心网设备发送制式指示消息，该制式指示消息中携带该终端的标识与该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式。
在本发明实施例中，在异制式小区间切换过程中，RAN服务器根据终端上报的测量报告，确定该终端的目标异制式小区，也即是，确定该终端准备接入的相邻异制式小区，之后，该RAN服务器为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息以及该目标异制式小区的标识发送给该终端，从而使得该终端切换至该目标异制式小区中，由于在异制式小区间切换的过程中无需跨越核心网，因此，减少了源核心网与目标核心网之间的信令交互。
以上发送模块630可以为发射机或收发机，以上接收模块610可以为接收机或收发机，且该发送模块630以及接收模块610可以集成在一起构成收发模块，对应于硬件实现为收发机。以上确定模块620可以以硬件形式内嵌于或独立于RAN服务器的处理器中，也可以以软件形式存储于RAN服务器的存储器中，以便于处理器调用执行以上各个模块对应的操作。该处理器可以为中央处理单元(CPU)、微处理器、单片机等。
需要说明的是，图6所示的RAN服务器具体可以用于执行图4中RAN服务器的步骤，不再赘述。
图7是根据一示例性实施例示出的一种第一接入网设备的结构示意图，该第一接入网设备可以由软件、硬件或者两者结合实现。该第一接入网设备可以包括：
第一接收模块710，用于接收终端发送的测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值；
确定模块720，用于根据该第一接收模块710接收的该测量报告，确定该终端的目标异制式小区；
第一发送模块730，用于通过该第一接入网设备和该确定模块720确定的目标异制式小区所属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息，该切换请求消息用于请求该第二接入网设备为该终端在该目标异制式小区中配置资源，该切换请求消息携带该终端的标识和该目标异制式小区的标识，该配置的资源为该终端接入该目标异制式小区时所使用的资 源；
第二接收模块740，用于通过该通信接口，接收该第二接入网设备发送的切换响应消息，该切换响应消息携带该配置的资源的信息；
第二发送模块750，用于向该终端发送切换命令，该切换命令用于指示该终端切换至该目标异制式小区，该切换命令携带该目标异制式小区的标识和该该第二接收模块740接收的该配置的资源的信息；
其中，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
可选地，该第一接入网设备和该第二接入网设备均为无线接入网络RAN服务器；或者，
该第一接入网设备和该第二接入网设备均为基站。
可选地，该第二发送模块750还用于：
向该第二接入网设备发送序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，该未成功向该终端发送的数据包的序列号用于该第二接入网设备重新发送该未成功向该终端发送的数据包的序列号对应的数据包，该传输过程中丢失的数据包的序列号用于该第二接入网设备请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
可选地，该第一接收模块710还用于：
在建立该第一接入网设备与该第二接入网设备之间的通信连接时，接收该第二接入网设备发送的该第二接入网设备的设备标识、该第二接入网设备所管理的所有小区的小区标识和通信制式信息。
在本发明实施例中，第一接入网设备根据测量报告，确定该终端的目标异制式小区后，当该目标异制式小区所属的接入站点不属于该第一接入网设备时，该第一接入网设备将通过第一接入网设备和目标异制式小区所属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息，以使该第二接入网设备为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息返回至该第一接入网设备，并由该第一接入网设备将该配置的资源的信息和该目标异制式小区的标识发送给该终端，使得该终端切换到该目标异制式小区中，在异制式小区间切换过程中无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
以上第一发送模块730以及第二发送模块750可以为发射机或收发机，以上第一接收模块710以及第二接收模块740可以为接收机或收发机，且该第一发送模块730、第二发送模块750、第一接收模块710以及第二接收模块740可以集成在一起构成收发模块，对应于硬件实现为收发机。以上确定模块720可以以硬件形式内嵌于或独立于第一接入网设备的处理器中，也可以以软件形式存储于第一接入网设备的存储器中，以便于处理器调用执行以上各个模块对应的操作。该处理器可以为中央处理单元(CPU)、微处理器、单片机等。
需要说明的是，图7所示的第一接入网设备具体可以用于执行图5A中第一接入网设备的步骤，不再赘述。
图8是根据一示例性实施例示出的一种第二接入网设备的结构示意图，该第二接入网设备可以由软件、硬件或者两者的结合实现。该第二接入网设备可以包括：
接收模块810，用于接收第一接入网设备发送的切换请求消息，该切换请求消息携带终端的标识和该目标异制式小区的标识，该第一接入网设备为该终端所在服务小区所属的接入网设备；
配置模块820，用于根据该接收模块810接收的该切换请求消息，为该终端在该目标异制式小区中配置资源；
发送模块830，用于向该第一接入网设备发送切换响应消息，该切换响应消息携带该配置模块820所配置的资源的信息；
其中，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
可选地，该第一接入网设备和该第二接入网设备均为无线接入网络RAN服务器；或者，
该第一接入网设备和该第二接入网设备均为基站。
可选地，该发送模块830，还用于向核心网设备发送路径切换请求消息，该路径切换请求消息中携带该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式；
该接收模块810，还用于接收该核心网设备发送的路径切换响应消息，该路径切换响应消息中携带数据通道信息，该数据通道信息用于指示传输该核心网设备与该终端之间的数据的通道。
可选地，该发送模块830还用于：
向该目标异制式小区所属的目标接入站点发送该配置的资源的信息，以使该目标接入站点基于该配置的资源的信息进行资源配置。
可选地，该接收模块810，还用于接收该第一接入网设备发送的序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
该发送模块830，还用于当该接收模块810接收的该序列号状态转移消息携带该未成功发送给该终端的数据包的序列号时，重新发送该未成功发送给该终端的数据包的序列号对应的数据包；
该发送模块830，还用于当该接收模块810接收的该序列号状态转移消息携带该传输过程中丢失的数据包的序列号时，发送重发请求消息，该重发请求消息用于请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
可选地，该发送模块830还用于：
在建立该第一接入网设备与该第二接入网设备之间的通信连接时，向该第一接入网设备发送发送该第二接入网设备的设备标识、该第二接入网设备所管理的所有小区的小区标识和通信制式信息。
在本发明实施例中，在异制式小区间切换的过程中，当目标异制式小区所属的接入站点不属于该第一接入网设备时，该第一接入网设备向该目标异制式小区所属的第二接入网设备发送切换请求消息，相应地，该第二接入网设备接收到该切换请求消息后，基于该切换请求消息中所携带的终端的标识和目标异制式小区的标识，为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息发送至该第一接入网设备，该第一接入网设备将所配置的资源的信息以及该目标异制式小区的标识发送至该终端，使得该终端切换至该目标异制式小区中，在该异制式小区间切换的过程中无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
以上发送模块830可以为发射机或收发机，以上接收模块810可以为接收机或收发机，且该发送模块830以及接收模块810可以集成在一起构成收发模块，对应于硬件实现为收发机。以上配置模块820可以以硬件形式内嵌于或独立于第二接入网设备的处理器中，也可以以软件形式存储于第二接入网设备的存储器中，以便于处理器调用执行以上各个模块对应的操作。该处理器可以为 中央处理单元(CPU)、微处理器、单片机等。
需要说明的是，图8所示的第二接入网设备具体可以用于执行图5A中第二接入网设备的步骤，不再赘述。
图9是根据一示例性实施例示出的一种RAN服务器900的框图，能够实现本发明提供的异制式小区间切换方法。该RAN服务器900包括发射机932、接收机931、存储器933以及分别与发射机932、接收机931和存储器933连接的处理器934：
该接收机931，用于接收终端发送的测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值；
该处理器934，用于根据该接收机931接收的该测量报告，确定该终端的目标异制式小区，并在该目标异制式小区内为该终端配置资源，配置的资源为该终端接入该目标异制式小区时所使用的资源；
该发射机932，用于向该终端发送切换命令，该切换命令用于指示该终端切换至处理器934确定的该目标异制式小区，该切换命令中携带该目标异制式小区的标识和配置的资源的信息，其中，该RAN服务器用于管理该终端的服务小区和该目标异制式小区，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
可选地，该发射机932还用于：
向该目标异制式小区所属的接入站点发送该配置的资源的信息，以使该接入站点基于该配置的资源的信息进行资源配置。
可选地，该发射机932还用于：
向核心网设备发送制式指示消息，该制式指示消息中携带该终端的标识与该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式。
其中，上述存储器933用于存储一个或多个执行程序，并由处理器934执行该一个或多个执行程序，以实现该异制式小区间切换方法。
在本发明实施例中，在异制式小区间切换过程中，RAN服务器根据终端上报的测量报告，确定该终端的目标异制式小区，也即是，确定该终端准备接入的相邻异制式小区，之后，该RAN服务器为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息以及该目标异制式小区的标识发送给该终 端，从而使得该终端切换至该目标异制式小区中，由于在异制式小区间切换的过程中无需跨越核心网，因此，减少了源核心网与目标核心网之间的信令交互。
图10是根据一示例性实施例示出的一种第一接入网设备1000的框图，能够实现本发明提供的异制式小区间切换方法。该第一接入网设备包括发射机1032、接收机1031、存储器1033以及分别与发射机1032、接收机1031和存储器1033连接的处理器1034：
该接收机1031，用于接收终端发送的测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值；
该处理器1033，用于根据该接收机1031接收的该测量报告，确定该终端的目标异制式小区；
该发射机1032，用于通过该第一接入网设备和该处理器1033确定的该目标异制式小区所属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息，该切换请求消息用于请求该第二接入网设备为该终端在该目标异制式小区中配置资源，该切换请求消息携带该终端的标识和该目标异制式小区的标识，该配置的资源为该终端接入该目标异制式小区时所使用的资源；
该接收机1031，还用于通过该通信接口，接收该第二接入网设备发送的切换响应消息，该切换响应消息携带该配置的资源的信息；
该发射机1032，还用于向该终端发送切换命令，该切换命令用于指示该终端切换至该目标异制式小区，该切换命令携带该目标异制式小区的标识和该接收机1031接收的该配置的资源的信息；
其中，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
可选地，该第一接入网设备和该第二接入网设备均为无线接入网络RAN服务器；或者，
该第一接入网设备和该第二接入网设备均为基站。
可选地，该发射机1032还用于：
向该第二接入网设备发送序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，该未成功向该终端发送的数据包的序列号用于该第二接入网设备重新发送该未成功向该终端发送的数据包的序列号对应的数据包，该传输 过程中丢失的数据包的序列号用于该第二接入网设备请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
可选地，该接收机1031还用于：
在建立该第一接入网设备与该第二接入网设备之间的通信连接时，接收该第二接入网设备发送的该第二接入网设备的设备标识、该第二接入网设备所管理的所有小区的小区标识和通信制式信息。
其中，该存储器1033用于存储一个或多个执行程序，并由该处理器1034执行该一个或多个执行程序，以实现上述异制式小区间切换方法。
在本发明实施例中，第一接入网设备根据测量报告，确定该终端的目标异制式小区后，当该目标异制式小区所属的接入站点不属于该第一接入网设备时，该第一接入网设备将通过第一接入网设备和目标异制式小区所属的第二接入网设备之间的通信接口，向该第二接入网设备发送切换请求消息，以使该第二接入网设备为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息返回至该第一接入网设备，并由该第一接入网设备将该配置的资源的信息和该目标异制式小区的标识发送给该终端，使得该终端切换到该目标异制式小区中，在异制式小区间切换过程中无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
图11是根据一示例性实施例示出的一种第二接入网设备1100的框图，能够实现本发明提供的异制式小区间切换方法。该第二接入网设备包括发射机1132、接收机1131、存储器1133以及分别与发射机1132、接收机1131和存储器1133连接的处理器1134：
该接收机1131，用于接收第一接入网设备发送的切换请求消息，该切换请求消息携带终端的标识和该目标异制式小区的标识，该第一接入网设备为该终端所在服务小区所属的接入网设备；
该处理器1134，用于根据该接收机1131接收的该切换请求消息，为该终端在该目标异制式小区中配置资源；
该发射机1132，用于向第一接入网络设备发送切换响应消息，该切换响应消息携带该接收机1131所配置的资源的信息，其中，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
可选地，该第一接入网设备和该第二接入网设备均为无线接入网络RAN 服务器；或者，
该第一接入网设备和该第二接入网设备均为基站。
可选地，该发射机1132还用于，向核心网设备发送路径切换请求消息，该路径切换请求消息中携带该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式；
该接收机1131，还用于接收该核心网设备发送的路径切换响应消息，该路径切换响应消息中携带数据通道信息，该数据通道信息用于指示传输该核心网设备与该终端之间的数据的通道。
可选地，该发射机1132还用于：
向该目标异制式小区所属的目标接入站点发送该配置的资源的信息，以使该目标接入站点基于该配置的资源的信息进行资源配置。
可选地，该接收机1131，还用于接收该第一接入网设备发送的序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
该发射机1132，还用于当该接收机1131接收的该序列号状态转移消息携带该未成功发送给该终端的数据包的序列号时，重新发送该未成功发送给该终端的数据包的序列号对应的数据包；和/或，
该发射机1132，还用于当该接收机1131接收的该序列号状态转移消息携带该传输过程中丢失的数据包的序列号时，发送重发请求消息，该重发请求消息用于请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
可选地，该发射机1132还用于：
在建立该第一接入网设备与该第二接入网设备之间的通信连接时，向该第一接入网设备发送该第二接入网设备的设备标识、该第二接入网设备所管理的所有小区的小区标识和通信制式信息。
该存储器1133用于存储一个或多个执行程序，并由该处理器1134执行该一个或多个执行程序，以实现上述异制式小区间切换方法。
在本发明实施例中，在异制式小区间切换的过程中，当目标异制式小区所属的接入站点不属于该第一接入网设备时，该第一接入网设备向该目标异制式小区所属的第二接入网设备发送切换请求消息，相应地，该第二接入网设备接收到该切换请求消息后，基于该切换请求消息中所携带的终端的标识和目标异 制式小区的标识，为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息发送至该第二接入网设备，该第一接入网设备将所配置的资源的信息以及该目标异制式小区的标识发送至该终端，使得该终端切换至该目标异制式小区中，在该异制式小区间切换的过程中无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
图12是根据一示例性实施例示出的一种系统框图，能够实现本发明提供的异制式小区间切换方法。该系统中主要包括终端1210和RAN服务器1220，其中该终端1210可以通过该RAN服务器1220下的接入站点与该RAN服务器1220之间进行通信。
该终端1210用于向该RAN服务器1220发送测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值；
该RAN服务器1220用于接收该测量报告，并根据该测量报告，确定该终端1210的目标异制式小区，并在该目标异制式小区内为该终端1210配置资源，该配置的资源为该终端1210接入该目标异制式小区时所使用的资源；
该RAN服务器1220还用于向该终端1210发送切换命令，该切换命令携带该目标异制式小区的标识和该配置的资源的信息；
该终端1210还用于根据该切换命令切换至该目标异制式小区，其中，上述服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
进一步地，该系统还可以包括核心网设备1230，该RAN服务器1220与该核心网设备1230之间建立有通信连接。
可选地，该RAN服务器1220向该终端1210发送切换命令之前，该RAN服务器1220还用于向该目标异制式小区所属的接入站点发送该配置的资源的信息，以使该接入站点基于该配置的资源的信息进行资源配置。
可选地，该RAN服务器1220向该终端1210发送切换命令之后，该RAN服务器1220还用于向核心网设备1230发送制式指示消息，该制式指示消息中携带该终端1210的标识与该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式。
在本发明实施例中，在异制式小区间切换过程中，RAN服务器根据终端上报的测量报告，确定该终端的目标异制式小区，也即是，确定该终端准备接入的相邻异制式小区，之后，该RAN服务器为该终端在该目标异制式小区中 配置资源，并将所配置的资源的信息以及该目标异制式小区的标识发送给该终端，从而使得该终端切换至该目标异制式小区中，由于在异制式小区间切换的过程中无需跨越核心网，因此，减少了源核心网与目标核心网之间的信令交互。
图13是根据另一示例性实施例示出的一种系统框图，能够实现本发明提供的异制式小区间切换方法。该系统中主要包括终端1310、第一接入网设备1320、第二接入网设备1330。其中，该终端1310可以通过该第一接入网设备1320下的接入站点与该第一接入网设备1320之间进行通信，该第一接入网设备1320与该第二接入网设备1330之间存在通信接口，即该第一接入网设备1320与该第二接入网设备1330之间可以进行通信。
该终端1310用于向该第一接入网设备1320发送测量报告，该测量报告包括该终端所在服务小区的相邻异制式小区的标识及该相邻异制式小区的测量值；
该第一接入网设备1320用于接收该测量报告，并根据该测量报告，确定该终端1310的目标异制式小区；
该第一接入网设备1320还用于通过该第一接入网设备1320和该目标异制式小区所属的第二接入网设备1330之间的通信接口，向该第二接入网设备1330发送切换请求消息；
该第二接入网设备1330用于根据该切换请求消息，为该终端1310在该目标异制式小区中配置资源，该切换请求消息携带该终端1310的标识和该目标异制式小区的标识，该配置的资源为该终端1310接入该目标异制式小区时所使用的资源；
该第二接入网设备1330还用于通过该通信接口，向该该第一接入网设备1320发送切换响应消息，该切换响应消息携带该配置的资源的信息；
该第一接入网设备1320还用于通过该通信接口，向该终端1310发送切换命令，该切换命令携带该目标异制式小区的标识和该配置的资源的信息；
该终端1310还用于根据该切换命令切换至该目标异制式小区，其中，该服务小区采用的通信制式与该目标异制式小区采用的通信制式不同。
进一步地，该系统还包括核心网设备1340，该核心网设备1340分别与该第一接入网设备1320和该第二接入网设备1330之间建立通信连接，即该核心网设备1340用于管理该第一接入网设备1320和该第二接入网设备1330。
可选地，该第一接入网设备1320和该第二接入网设备1330均为无线接入网络RAN服务器；或者，该第一接入网设备1320和该第二接入网设备1330均为基站。
可选地，该第一接入网设备1320向该终端1310发送切换命令之后，该第一接入网设备1320还用于向该第二接入网设备1330发送序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，该未成功向该终端发送的数据包的序列号用于该第二接入网设备重新发送该未成功向该终端发送的数据包的序列号对应的数据包，该传输过程中丢失的数据包的序列号用于该第二接入网设备请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
可选地，该第一接入网设备1320接收终端1310发送的测量报告之前，该第一接入网设备1320还用于：
在建立该第一接入网设备1320与该第二接入网设备1330之间的通信连接时，接收该第二接入网设备1330发送的该第二接入网设备1330的设备标识、该第二接入网设备1330所管理的所有小区的小区标识和通信制式信息。
该第二接入网设备1330向该第一接入网设备1320发送切换响应消息之后，还向核心网设备1340发送路径切换请求消息，该路径切换请求消息中携带该目标异制式小区的制式信息，该制式信息用于指示该目标异制式小区采用的通信制式；
该第二接入网设备1330接收该核心网设备1340发送的路径切换响应消息，该路径切换响应消息中携带数据通道信息，该数据通道信息用于指示传输该核心网设备1340与该终端1310之间的数据的通道。
可选地，该第二接入网设备1330向该第一接入网设备1320发送切换响应消息之前，该第二接入网设备1330还用于向该目标异制式小区所属的目标接入站点发送该配置的资源的信息，以使该目标接入站点基于该配置的资源的信息进行资源配置。
可选地，接收该核心网1340发送的路径切换响应消息之后，该第二接入网设备1330还用于接收该第一接入网设备1320发送的序列号状态转移消息，该序列号状态转移消息携带未成功发送给该终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
若该序列号状态转移消息携带该未成功发送给该终端的数据包的序列号， 则该第二接入网设备1330重新发送该未成功发送给该终端的数据包的序列号对应的数据包；和/或，
若该序列号状态转移消息携带该传输过程中丢失的数据包的序列号，则该第二接入网设备1330发送重发请求消息，所述重发请求消息用于请求该终端重新发送该传输过程中丢失的数据包的序列号对应的数据包。
可选地，该第二接入网设备1330接收该第一接入网设备1320发送的切换请求消息之前，第二接入网设备1330还用于：
在建立该第一接入网设备1320与该第二接入网设备1330之间的通信连接时，向该第一接入网设备1320发送该第二接入网设备1330的设备标识、该第二接入网设备1330所管理的所有小区的小区标识和通信制式信息。
在本发明实施例中，在异制式小区间切换过程中，第一接入网设备根据终端上报的测量报告，确定该终端的目标异制式小区，也即是，确定该终端准备接入的相邻异制式小区，之后，该第一接入网设备通过该第一接入网设备与该第二接入网设备之间的通信接口，向该目标异制式小区所属的第二接入网设备发送切换请求消息，使得该第二接入网设备为该终端在该目标异制式小区中配置资源，并将所配置的资源的信息返回至该第一接入网设备，并由该第一接入网设备将该配置的资源的信息发送给该终端，使得该终端接入到该目标异制式小区中，在异制式小区间切换的过程中无需跨越核心网，减少了源核心网与目标核心网之间的信令交互。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (39)

  1. 一种异制式小区间切换的方法，其特征在于，所述方法包括：
    无线接入网络RAN服务器接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
    所述RAN服务器根据所述测量报告，确定所述终端的目标异制式小区，并在所述目标异制式小区内为所述终端配置资源，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
    所述RAN服务器向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述配置的资源的信息；
    其中，所述RAN服务器用于管理所述终端的服务小区和所述目标异制式小区，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  2. 如权利要求1所述的方法，其特征在于，所述RAN服务器向所述终端发送切换命令之前，还包括：
    向所述目标异制式小区所属的接入站点发送所述配置的资源的信息，以使所述接入站点基于所述配置的资源的信息进行资源配置。
  3. 如权利要求1或2所述的方法，其特征在于，所述RAN服务器向所述终端发送切换命令之后，还包括：
    向核心网设备发送制式指示消息，所述制式指示消息中携带所述终端的标识与所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式。
  4. 一种异制式小区间切换的方法，其特征在于，所述方法包括：
    第一接入网设备接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
    所述第一接入网设备根据所述测量报告，确定所述终端的目标异制式小区；
    所述第一接入网设备通过所述第一接入网设备和所述目标异制式小区所属 的第二接入网设备之间的通信接口，向所述第二接入网设备发送切换请求消息，所述切换请求消息用于请求所述第二接入网设备为所述终端在所述目标异制式小区中配置资源，所述切换请求消息携带所述终端的标识和所述目标异制式小区的标识，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
    所述第一接入网设备通过所述通信接口，接收所述第二接入网设备发送的切换响应消息，所述切换响应消息携带所述配置的资源的信息；
    所述第一接入网设备向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述配置的资源的信息；
    其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  5. 如权利要求4所述的方法，其特征在于，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
    所述第一接入网设备和所述第二接入网设备均为基站。
  6. 如权利要求4或5所述的方法，其特征在于，所述第一接入网设备向所述终端发送切换命令之后，还包括：
    所述第一接入网设备向所述第二接入网设备发送序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，所述未成功向所述终端发送的数据包的序列号用于所述第二接入网设备重新发送所述未成功向所述终端发送的数据包的序列号对应的数据包，所述传输过程中丢失的数据包的序列号用于所述第二接入网设备请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
  7. 如权利要求4-6任一所述的方法，其特征在于，所述第一接入网设备接收终端发送的测量报告之前，还包括：
    在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，接收所述第二接入网设备发送的所述第二接入网设备的设备标识、所述第二接入 网设备所管理的所有小区的小区标识和通信制式信息。
  8. 一种异制式小区间切换的方法，其特征在于，所述方法包括：
    第二接入网设备接收第一接入网设备发送的切换请求消息，所述切换请求消息携带终端的标识和目标异制式小区的标识，所述第一接入网设备为所述终端所在服务小区所属的接入网设备；
    所述第二接入网设备根据所述切换请求消息，为所述终端在所述目标异制式小区中配置资源；
    所述第二接入网设备向所述第一接入网设备发送切换响应消息，所述切换响应消息携带所述配置的资源的信息；
    其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  9. 如权利要求8所述的方法，其特征在于，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
    所述第一接入网设备和所述第二接入网设备均为基站。
  10. 如权利要求8或9所述的方法，其特征在于，所述第二接入网设备向所述第一接入网设备发送切换响应消息之后，还包括：
    所述第二接入网设备向核心网设备发送路径切换请求消息，所述路径切换请求消息中携带所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式；
    所述第二接入网设备接收所述核心网设备发送的路径切换响应消息，所述路径切换响应消息中携带数据通道信息，所述数据通道信息用于指示传输所述核心网设备与所述终端之间的数据的通道。
  11. 如权利要求8-10任一所述的方法，其特征在于，所述第二接入网设备向所述第一接入网设备发送切换响应消息之前，还包括：
    所述第二接入网设备向所述目标异制式小区所属的目标接入站点发送所述配置的资源的信息，以使所述目标接入站点基于所述配置的资源的信息进行资源配置。
  12. 如权利要求8-11任一所述的方法，其特征在于，所述接收所述核心网发送的路径切换响应消息之后，还包括：
    所述第二接入网设备接收所述第一接入网设备发送的序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
    若所述序列号状态转移消息携带所述未成功发送给所述终端的数据包的序列号，则所述第二接入网设备重新发送所述未成功发送给所述终端的数据包的序列号对应的数据包；和/或，
    若所述序列号状态转移消息携带所述传输过程中丢失的数据包的序列号，则所述第二接入网设备发送重发请求消息，所述重发请求消息用于请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
  13. 如权利要求8-12任一所述的方法，其特征在于，所述第二接入网设备接收所述第一接入网设备发送的切换请求消息之前，还包括：
    在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，向所述第一接入网设备发送所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
  14. 一种无线接入网络RAN服务器，其特征在于，包括：
    接收模块，用于接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
    确定模块，用于根据所述接收模块接收的所述测量报告，确定所述终端的目标异制式小区，并在所述目标异制式小区内为所述终端配置资源，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
    发送模块，用于向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述确定模块确定的所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述配置的资源的信息；
    其中，所述RAN服务器用于管理所述终端的服务小区和所述目标异制式小区，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  15. 如权利要求14所述的RAN服务器，其特征在于，所述发送模块还用于：
    向所述目标异制式小区所属的接入站点发送所述配置的资源的信息，以使所述接入站点基于所述配置的资源的信息进行资源配置。
  16. 如权利要求14或15所述的RAN服务器，其特征在于，所述发送模块还用于：
    向核心网设备发送制式指示消息，所述制式指示消息中携带所述终端的标识与所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式。
  17. 一种第一接入网设备，其特征在于，包括：
    第一接收模块，用于接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
    确定模块，用于根据所述第一接收模块接收的所述测量报告，确定所述终端的目标异制式小区；
    第一发送模块，用于通过所述第一接入网设备和所述确定模块确定的所述目标异制式小区所属的第二接入网设备之间的通信接口，向所述第二接入网设备发送切换请求消息，所述切换请求消息用于请求所述第二接入网设备为所述终端在所述目标异制式小区中配置资源，所述切换请求消息携带所述终端的标识和所述目标异制式小区的标识，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
    第二接收模块，用于通过所述通信接口，接收所述第二接入网设备发送的切换响应消息，所述切换响应消息携带所述配置的资源的信息；
    第二发送模块，用于向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述第二接收模块接收的所述配置的资源的信息；
    其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  18. 如权利要求17所述的第一接入网设备，其特征在于，所述第一接入网 设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
    所述第一接入网设备和所述第二接入网设备均为基站。
  19. 如权利要求17或18所述的第一接入网设备，其特征在于，所述第二发送模块还用于：
    向所述第二接入网设备发送序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，所述未成功向所述终端发送的数据包的序列号用于所述第二接入网设备重新发送所述未成功向所述终端发送的数据包的序列号对应的数据包，所述传输过程中丢失的数据包的序列号用于所述第二接入网设备请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
  20. 如权利要求17-19任一所述的第一接入网设备，其特征在于，所述第一接收模块还用于：
    在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，接收所述第二接入网设备发送的所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
  21. 一种第二接入网设备，其特征在于，包括：
    接收模块，用于接收第一接入网设备发送的切换请求消息，所述切换请求消息携带终端的标识和目标异制式小区的标识，所述第一接入网设备为所述终端所在服务小区所属的接入网设备；
    配置模块，用于根据所述接收模块接收的所述切换请求消息，为所述终端在所述目标异制式小区中配置资源；
    发送模块，用于向所述第一接入网设备发送切换响应消息，所述切换响应消息携带所述配置模块配置的资源的信息；
    其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  22. 如权利要求21所述的第二接入网设备，其特征在于，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
    所述第一接入网设备和所述第二接入网设备均为基站。
  23. 如权利要求21或22所述的第二接入网设备，其特征在于，所述发送模块，还用于向核心网设备发送路径切换请求消息，所述路径切换请求消息中携带所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式；
    所述接收模块，还用于接收所述核心网设备发送的路径切换响应消息，所述路径切换响应消息中携带数据通道信息，所述数据通道信息用于指示传输所述核心网设备与所述终端之间的数据的通道。
  24. 如权利要求21-23任一所述的第二接入网设备，其特征在于，所述发送模块还用于：
    向所述目标异制式小区所属的目标接入站点发送所述配置的资源的信息，以使所述目标接入站点基于所述配置的资源的信息进行资源配置。
  25. 如权利要求21-24任一所述的第二接入网设备，其特征在于，所述接收模块，还用于接收所述第一接入网设备发送的序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
    所述发送模块，还用于当所述接收模块接收的所述序列号状态转移消息携带所述未成功发送给所述终端的数据包的序列号时，重新发送所述未成功发送给所述终端的数据包的序列号对应的数据包；
    所述发送模块，还用于当所述接收模块接收的所述序列号状态转移消息携带所述传输过程中丢失的数据包的序列号时，发送重发请求消息，所述重发请求消息用于请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
  26. 如权利要求21-25任一所述的第二接入网设备，其特征在于，所述发送模块还用于：
    在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，向所述第一接入网设备发送发送所述第二接入网设备的设备标识、所述第二接入 网设备所管理的所有小区的小区标识和通信制式信息。
  27. 一种无线接入网络RAN服务器，其特征在于，所述RAN服务器包括发射机、接收机以及分别与所述发射机和接收机连接的处理器：
    所述接收机，用于接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
    所述处理器，用于根据所述接收机接收的所述测量报告，确定所述终端的目标异制式小区，并在所述目标异制式小区内为所述终端配置资源，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
    所述发射机，用于向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述处理器确定的所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述配置的资源的信息；
    其中，所述RAN服务器用于管理所述终端的服务小区和所述目标异制式小区，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  28. 如权利要求27所述的RAN服务器，其特征在于，所述发射机还用于：
    向所述目标异制式小区所属的接入站点发送所述配置的资源的信息，以使所述接入站点基于所述配置的资源的信息进行资源配置。
  29. 如权利要求27或28所述的RAN服务器，其特征在于，所述发射机还用于：
    向核心网设备发送制式指示消息，所述制式指示消息中携带所述终端的标识与所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式。
  30. 一种第一接入网设备，其特征在于，所述第一接入网设备包括发射机、接收机以及分别与所述发射机和接收机连接的处理器：
    所述接收机，用于接收终端发送的测量报告，所述测量报告包括所述终端所在服务小区的相邻异制式小区的标识及所述相邻异制式小区的测量值；
    所述处理器，用于根据所述接收机接收的所述测量报告，确定所述终端的目标异制式小区；
    所述发射机，用于通过所述第一接入网设备和所述处理器确定的所述目标异制式小区所属的第二接入网设备之间的通信接口，向所述第二接入网设备发送切换请求消息，所述切换请求消息用于请求所述第二接入网设备为所述终端在所述目标异制式小区中配置资源，所述切换请求消息携带所述终端的标识和所述目标异制式小区的标识，所述配置的资源为所述终端接入所述目标异制式小区时所使用的资源；
    所述接收机，还用于通过所述通信接口，接收所述第二接入网设备发送的切换响应消息，所述切换响应消息携带所述配置的资源的信息；
    所述发射机，还用于向所述终端发送切换命令，所述切换命令用于指示所述终端切换至所述目标异制式小区，所述切换命令携带所述目标异制式小区的标识和所述接收机接收的所述配置的资源的信息；
    其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  31. 如权利要求30所述的第一接入网设备，其特征在于，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
    所述第一接入网设备和所述第二接入网设备均为基站。
  32. 如权利要求30或31所述的第一接入网设备，其特征在于，所述发射机还用于：
    向所述第二接入网设备发送序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个，所述未成功向所述终端发送的数据包的序列号用于所述第二接入网设备重新发送所述未成功向所述终端发送的数据包的序列号对应的数据包，所述传输过程中丢失的数据包的序列号用于所述第二接入网设备请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
  33. 如权利要求30-32任一所述的第一接入网设备，其特征在于，所述接收机还用于：
    在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，接收所述第二接入网设备发送的所述第二接入网设备的设备标识、所述第二接入 网设备所管理的所有小区的小区标识和通信制式信息。
  34. 一种第二接入网设备，其特征在于，所述第二接入网设备包括发射机、接收机以及分别与所述发射机和接收机连接的处理器：
    所述接收机，用于接收第一接入网设备发送的切换请求消息，所述切换请求消息携带终端的标识和目标异制式小区的标识，所述第一接入网设备为所述终端所在服务小区所属的接入网设备；
    所述处理器，用于根据所述接收机接收的所述切换请求消息，为所述终端在所述目标异制式小区中配置资源；
    所述发射机，用于向所述第一接入网设备发送切换响应消息，所述切换响应消息携带所述处理器配置的资源的信息；
    其中，所述服务小区采用的通信制式与所述目标异制式小区采用的通信制式不同。
  35. 如权利要求34所述的第二接入网设备，其特征在于，所述第一接入网设备和所述第二接入网设备均为无线接入网络RAN服务器；或者，
    所述第一接入网设备和所述第二接入网设备均为基站。
  36. 如权利要求34或35所述的第二接入网设备，其特征在于，所述发射机，还用于向核心网设备发送路径切换请求消息，所述路径切换请求消息中携带所述目标异制式小区的制式信息，所述制式信息用于指示所述目标异制式小区采用的通信制式；
    所述接收机，还用于接收所述核心网设备发送的路径切换响应消息，所述路径切换响应消息中携带数据通道信息，所述数据通道信息用于指示传输所述核心网设备与所述终端之间的数据的通道。
  37. 如权利要求34-36任一所述的第二接入网设备，其特征在于，所述发射机还用于：
    向所述目标异制式小区所属的目标接入站点发送所述配置的资源的信息，以使所述目标接入站点基于所述配置的资源的信息进行资源配置。
  38. 如权利要求34-37任一所述的第二接入网设备，其特征在于，所述接收机，还用于接收所述第一接入网设备发送的序列号状态转移消息，所述序列号状态转移消息携带未成功发送给所述终端的数据包的序列号以及传输过程中丢失的数据包的序列号中至少一个；
    所述发射机，还用于当所述接收机接收的所述序列号状态转移消息携带所述未成功发送给所述终端的数据包的序列号时，重新发送所述未成功发送给所述终端的数据包的序列号对应的数据包；和/或，
    所述发射机，还用于当所述接收机接收的所述序列号状态转移消息携带所述传输过程中丢失的数据包的序列号时，发送重发请求消息，所述重发请求消息用于请求所述终端重新发送所述传输过程中丢失的数据包的序列号对应的数据包。
  39. 如权利要求34-38任一所述的第二接入网设备，其特征在于，所述发射机还用于：
    在建立所述第一接入网设备与所述第二接入网设备之间的通信连接时，向所述第一接入网设备发送所述第二接入网设备的设备标识、所述第二接入网设备所管理的所有小区的小区标识和通信制式信息。
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