WO2020093842A1 - 小区切换方法、终端和通信节点 - Google Patents

小区切换方法、终端和通信节点 Download PDF

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Publication number
WO2020093842A1
WO2020093842A1 PCT/CN2019/111195 CN2019111195W WO2020093842A1 WO 2020093842 A1 WO2020093842 A1 WO 2020093842A1 CN 2019111195 W CN2019111195 W CN 2019111195W WO 2020093842 A1 WO2020093842 A1 WO 2020093842A1
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WIPO (PCT)
Prior art keywords
connection configuration
terminal
node
handover
source node
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2019/111195
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English (en)
French (fr)
Inventor
马玥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to KR1020217017410A priority Critical patent/KR102593774B1/ko
Priority to EP19883085.3A priority patent/EP3879880A4/en
Publication of WO2020093842A1 publication Critical patent/WO2020093842A1/zh
Priority to US17/306,368 priority patent/US20210258840A1/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
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • 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
    • H04W36/08—Reselecting an access point
    • 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
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H04W36/185—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection using make before break
    • 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
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00698—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using different RATs

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a cell switching method, terminal, and communication node.
  • a terminal In a communication system, a terminal frequently performs cell switching, that is, switching from a source node to a target node.
  • the terminal disconnects the source node according to the handover command sent by the source node, and then initiates access to the target node to connect to the target node, that is, related
  • the terminal there will be an interruption delay for the terminal, resulting in a relatively large communication delay for the terminal.
  • Some embodiments of the present disclosure provide a cell handover method, a terminal, and a communication node to solve the problem of a relatively large communication delay of the terminal.
  • some embodiments of the present disclosure provide a cell handover method, which is applied to a terminal and includes:
  • the handover command including the first dual connection configuration
  • some embodiments of the present disclosure provide a cell handover method, which is applied to a terminal and includes:
  • the handover command including a dual connection configuration and a single connection configuration of the destination node
  • some embodiments of the present disclosure provide a cell handover method, which is applied to a target node and includes:
  • the handover response includes a handover command
  • the handover command includes a first dual connection configuration
  • some embodiments of the present disclosure provide a cell handover method, which is applied to a source node and includes:
  • the handover response includes a handover command
  • the handover command includes a first dual connection configuration
  • Disconnecting from the terminal wherein the disconnection is disconnected after the terminal establishes a connection with the target node.
  • some embodiments of the present disclosure provide a terminal, including:
  • a first receiving module configured to receive a switching command sent by the source node, the switching command including the first dual connection configuration
  • the establishment module is used to establish a connection with the target node according to the first dual connection configuration
  • a second receiving module configured to receive the single connection configuration sent by the target node
  • the disconnect module is used to disconnect the source node.
  • some embodiments of the present disclosure provide a terminal, including:
  • the receiving module is used to receive a switching command sent by the source node, the switching command includes a dual connection configuration, and a single connection configuration of the destination node;
  • the establishment module is used to establish a connection with the target node according to the dual connection configuration
  • the disconnect module is used to disconnect the source node.
  • some embodiments of the present disclosure provide a communication node, the communication node being a target node, including:
  • the first receiving module is used to receive the handover request sent by the source node
  • a first sending module configured to send a handover response of the handover request to the source node, the handover response includes a handover command, and the handover command includes a first dual connection configuration;
  • Establishing module for establishing connection with the terminal
  • the second sending module is configured to send the single connection configuration to the terminal.
  • some embodiments of the present disclosure provide a communication node, the communication node being a source node, including:
  • the first sending module is used to send a handover request to the target node
  • a first receiving module configured to receive a handover response sent by the target node to the handover request, the handover response includes a handover command, and the handover command includes a first dual connection configuration;
  • a second sending module configured to send the switching command to the terminal
  • a disconnect module is used to disconnect the terminal, wherein the disconnect is disconnected after the terminal establishes a connection with the target node.
  • some embodiments of the present disclosure provide a terminal, including: a memory, a processor, and a program stored on the memory and executable on the processor, when the program is executed by the processor. The steps in the cell handover method provided in the first aspect of some embodiments of the present disclosure are implemented.
  • some embodiments of the present disclosure provide a terminal, which includes: a memory, a processor, and a program stored on the memory and executable on the processor, and the program is described by the When executed by the processor, the steps in the cell handover method provided in the second aspect of some embodiments of the present disclosure are implemented.
  • some embodiments of the present disclosure provide a communication node, the communication node being a target node, including: a memory, a processor, and a program stored on the memory and executable on the processor, When the program is executed by the processor, the steps in the cell handover method provided in the third aspect of some embodiments of the present disclosure are implemented.
  • some embodiments of the present disclosure provide a communication node, the communication node being a source node, including: a memory, a processor, and a program stored on the memory and executable on the processor When the program is executed by the processor, the steps in the cell handover method provided in the fourth aspect of some embodiments of the present disclosure are implemented.
  • some embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, which when executed by a processor implements some embodiments of the present disclosure
  • the steps in the cell handover method provided on the one hand, or the steps in the cell handover method provided in the second aspect of some embodiments of the present disclosure when the computer program is executed by the processor, or the computer program is executed by the processor When executed, implement the steps in the cell handover method provided in the third aspect of some embodiments of the present disclosure, or, when the computer program is executed by the processor, implement the steps in the cell handover method provided in the fourth aspect of some embodiments of the present disclosure .
  • a handover command sent by a source node is received, the handover command includes a first dual connection configuration; according to the first dual connection configuration, a connection is established with a target node; a single command sent by the target node is received Connection configuration; applying the single connection configuration; disconnecting from the source node.
  • FIG. 1 is a structural diagram of a network system to which some embodiments of the present disclosure can be applied;
  • FIG. 2 is a flowchart of a cell handover method provided by some embodiments of the present disclosure
  • FIG. 3 is a flowchart of another cell switching method provided by some embodiments of the present disclosure.
  • FIG. 5 is a flowchart of another cell switching method provided by some embodiments of the present disclosure.
  • FIG. 6 is a schematic diagram of another cell switching method provided by some embodiments of the present disclosure.
  • FIG. 7 is a schematic diagram of another cell switching method provided by some embodiments of the present disclosure.
  • FIG. 8 is a structural diagram of a terminal provided by some embodiments of the present disclosure.
  • FIG. 9 is a structural diagram of another terminal provided by some embodiments of the present disclosure.
  • FIG. 10 is a structural diagram of another terminal provided by some embodiments of the present disclosure.
  • FIG. 11 is a structural diagram of another terminal provided by some embodiments of the present disclosure.
  • FIG. 12 is a structural diagram of another terminal provided by some embodiments of the present disclosure.
  • FIG. 13 is a structural diagram of another terminal provided by some embodiments of the present disclosure.
  • FIG. 14 is a structural diagram of a communication device provided by some embodiments of the present disclosure.
  • 15 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • 16 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • 17 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • FIG. 18 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • 19 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • 20 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • 21 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • 22 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • FIG. 23 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • 24 is a structural diagram of another terminal provided by some embodiments of the present disclosure.
  • 25 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • FIG. 26 is a structural diagram of another communication device provided by some embodiments of the present disclosure.
  • the words “exemplary” or “for example” are used as examples, illustrations or illustrations. Any embodiment or design described in some embodiments of the present disclosure as “exemplary” or “for example” should not be construed as being more preferred or advantageous than other embodiments or design. Rather, the use of words such as “exemplary” or “for example” is intended to present related concepts in a specific manner.
  • the cell switching method, terminal and communication node provided by some embodiments of the present disclosure may be applied in a wireless communication system.
  • the wireless communication system may be a 5G system, or an evolved Long Term Evolution (eLTE) system, or a subsequent evolution communication system.
  • eLTE evolved Long Term Evolution
  • FIG. 1 is a structural diagram of a network system applicable to some embodiments of the present disclosure. As shown in FIG. 1, it includes a terminal 11, a source node 12, and a target node 13, where the terminal 11 may be a user Terminal (User Equipment, UE) or other terminal-side equipment, such as: mobile phones, tablet computers (Tablet Personal Computer), laptop computers (Laptop Computer), personal digital assistants (personal digital assistants, PDA), mobile Internet devices (Mobile Internet devices (MID) or wearable devices (Wearable Devices) and other terminal-side devices.
  • UE User Equipment
  • PDA personal digital assistants
  • mobile Internet devices Mobile Internet devices (MID) or wearable devices (Wearable Devices) and other terminal-side devices.
  • MID Mobile Internet devices
  • Wiarable Devices wearable devices
  • the source node 12 and the target node 13 may be: the source base station and the target base station during the handover process; or the source secondary node (SN) and the target SN in the dual connectivity (DC); or the DC Source master node (Master Node, MN) and target SN.
  • the above-mentioned source node 12 may be the source MN and / or the source SN
  • the target node may be the target SN.
  • DC dual connection configuration described in this disclosure refers to the configuration in which the source node and the target node provide services to the terminal at the same time (simultaneous transmission / reception between the two nodes and the terminal);
  • SC Single Connectivity
  • FIG. 2 is a flowchart of a cell handover method provided by some embodiments of the present disclosure. The method is applied to a terminal. As shown in FIG. 2, the method includes the following steps:
  • Step 201 Receive a handover command sent by a source node, where the handover command includes a first dual connection configuration.
  • the above handover command (HO) command may be a configuration message, for example, a reconfiguration message.
  • the above handover command may be a radio resource control reconfiguration message (RRC Reconfiguration). That is to say, in some embodiments of the present disclosure, the above switching command may also be called a configuration message or a reconfiguration message.
  • RRC Reconfiguration radio resource control reconfiguration message
  • the first dual connection configuration may be a dual connection configuration of the target node and the source node, that is, the dual connection configuration includes a configuration in which the terminal establishes a dual connection with the target node and the source node, for example: physical layer, layer 2 and layer Three configurations, etc.
  • Step 202 Establish a connection with the target node according to the first dual connection configuration.
  • This step may be to establish a connection with the target node using the configuration of the target node in the dual-connection configuration, for example, using at least one of the configuration of the physical layer, layer 2 and layer 3 configuration of the target node in the dual-connection configuration and the target The node establishes a connection.
  • the terminal when establishing a connection with the target node according to the first dual connection configuration, the terminal also maintains a connection with the source cell, that is, after establishing a connection with the target node according to the first dual connection configuration according to the foregoing, then A dual connection is formed between the terminal and the source node and the target node, or it can be said that the above-mentioned first dual connection configuration is applied to implement the corresponding dual connection.
  • Step 203 Receive the single connection configuration sent by the target node.
  • the above single connection configuration may be sent through a configuration message, for example, an RRC reconfiguration message.
  • the above single connection configuration may include a configuration in which the terminal is connected to the target node in a single connection, for example, the physical layer, layer 2 and layer 3 configurations of the single connection.
  • the single connection may also be a single connection between the terminal and a target cell (Target Cell) in the target node, and the single connection configuration may also be the configuration of the target cell, for example: physical layer, layer 2 and layer 3 configuration, etc. .
  • the dual connection configuration may also be referred to as dual connection configuration information
  • the single connection configuration may also be referred to as single connection configuration information
  • Step 204 Apply the single connection configuration.
  • the above application single connection configuration may be that the single connection configuration is applied to corresponding entities or corresponding configuration operations are performed, for example, the physical layer, layer 2 and layer 3 configurations in the single connection configuration are respectively applied to the physical layer, layer 2 and Layer three.
  • Step 205 Disconnect the source node.
  • the above disconnection with the source node may be after the terminal applies the single connection configuration to the single connection configuration.
  • the single connection may also be applied Disconnected during configuration.
  • the terminal can establish a connection with the target node and maintain a connection with the source node during the handover, that is, the terminal has a connection between the source node and the target node during the handover process, and can send and receive data to ensure data transmission and reception No interruption, that is, the 0ms interruption delay during the movement process is realized, and the effect of reducing the communication delay of the terminal is achieved.
  • the method further includes:
  • the confirmation information of the handover command may indicate whether the terminal has successfully received the handover command.
  • the handover command may be a reconfiguration message
  • the confirmation information of the handover command may also be referred to as confirmation information of the reconfiguration message.
  • the confirmation information of the first dual connection configuration may indicate whether the terminal successfully parses the first dual connection configuration.
  • the accuracy of reporting the confirmation message by the terminal can be improved.
  • the foregoing handover command is transmitted through signaling radio bearers (Signaling Radio Bearers, SRB) 1 or SRB2.
  • SRB Signaling Radio Bearers
  • SRB1 and SRB2 may be SRB1 and SRB2 defined in the protocol, for example: SRB1 may be used to transmit RRC messages and transmitted on a dedicated control channel (DCCH) of logical channels; and SRB2 may be used to transmit non-connect In-layer (Non-access Stratum, NAS) messages are transmitted on the logical channel DCCH.
  • DCCH dedicated control channel
  • NAS non-access Stratum
  • the switching command can be transmitted through SRB1 or SRB2, the flexibility of transmitting the switching command can be improved.
  • the single connection configuration is transmitted through SRB1 or SRB2 or SRB3.
  • the above SRB3 may be SRB3 newly defined in the 5G protocol, and the SRB may be a dual connection transmission combining a Long Term Evolution (LTE) system and a New Radio (NR) system.
  • LTE Long Term Evolution
  • NR New Radio
  • the target node since the target node can support the transmission of the single connection configuration to the terminal through SRB1 or SRB2 or SRB3, the flexibility of transmitting the single connection configuration can be improved.
  • the method before the disconnection from the source node, the method further includes:
  • the above-mentioned first dual connection configuration has taken effect may be that the terminal has received the configuration, or the configuration has been applied
  • the above-mentioned single connection configuration has taken effect may be that the terminal has received the configuration, or has applied the configuration.
  • the above-mentioned first notification message can enable the source node to release the dual connection resources reserved by the source node in time, so as to save resources.
  • the method further includes:
  • At least one of conversion bearer type, conversion anchor node and conversion key is performed.
  • the second dual connection configuration may be delivered by the target node together with the single connection configuration, for example, the single connection configuration and the second dual connection configuration are delivered to the terminal through a reconfiguration message.
  • the target node may deliver the above single connection configuration and the above second dual connection configuration to the terminal through different reconfiguration messages.
  • the second dual connection configuration may be a dual connection configuration of the target node and other nodes.
  • the conversion of the bearer type, the conversion of the anchor node, and the conversion key are performed through the above-mentioned second dual connection configuration, thereby improving the communication performance of the terminal.
  • the method after receiving the single connection configuration sent by the target node, the method further includes:
  • the confirmation information of the single connection configuration may indicate that the single connection configuration has been applied or has been in effect, and the confirmation information of the end of the cell switching process may indicate that the cell switching process has ended. Therefore, the current status of the terminal of the target node is notified in time through the second confirmation message, so as to improve the working efficiency of the target node.
  • the target node may send a second notification message to the source node to notify the notification message that the single connection configuration has taken effect, or to notify the release of the double reserved by the source node Connection resources, so that the source node releases the dual connection resources reserved by the source node in time to save resources.
  • the application of the single connection configuration includes:
  • the single connection configuration is applied according to the received network indication or reconfiguration message.
  • the preset condition may be a preset time point or other conditions, and the preset condition may be pre-defined by the terminal or pre-configured by the network, etc. Since the single connection configuration is applied by default according to the preset condition, thus Improve the flexibility of application single connection configuration to meet the needs of different services or different scenarios.
  • the above network instruction may be an instruction sent by the source node or an instruction sent by the target node.
  • the above-mentioned instruction for reporting the effective single-connection configuration to the network may be reporting the instruction for the single-connection configuration to the source node or target node.
  • the reconfiguration message may be used to transmit the configuration message of the single connection configuration, or the reconfiguration message may be other configuration messages sent by the source node or the target node.
  • the single-connection configuration can be applied according to network instructions or reconfiguration messages, the flexibility of applying the single-connection configuration can be improved to adapt to the requirements of different services or different scenarios.
  • the indication that the single connection configuration is effective can also be reported to the network, so that the source node or the target node can confirm the status of the terminal in time.
  • a handover command sent by a source node is received, the handover command includes a first dual connection configuration; according to the first dual connection configuration, a connection is established with a target node; a single command sent by the target node is received Connection configuration; applying the single connection configuration; disconnecting from the source node.
  • FIG. 3 is a flowchart of another cell switching method provided by some embodiments of the present disclosure. The method is applied to a terminal. As shown in FIG. 3, the method includes the following steps:
  • Step 301 Receive a handover command sent by a source node, where the handover command includes a dual connection configuration and a single connection configuration of a destination node;
  • Step 302 Establish a connection with the target node according to the dual connection configuration
  • Step 303 Apply the single connection configuration of the target node
  • Step 304 Disconnect the source node.
  • connection establishment with the target node and the single connection configuration using the target node reference may also be made to the corresponding description of the embodiment shown in FIG. 2, which is not repeated here.
  • the application of the single connection configuration of the target node includes:
  • the above network for reporting the indication that the single connection configuration of the target node takes effect may be an instruction to report that the single connection configuration takes effect to the source node or the target node.
  • the terminal can establish a connection with the target node during the handover, and maintain a connection with the source node, that is, the terminal is connected to the source node and the target node at the same time during the handover process.
  • Send and receive to ensure that data is sent and received without interruption, that is, to achieve a 0ms interrupt delay in the process of movement, to achieve the effect of reducing terminal communication delay.
  • FIG. 4 is a flowchart of another cell switching method provided by some embodiments of the present disclosure. The method is applied to a target node, as shown in FIG. 4, and includes the following steps:
  • Step 401 Receive a handover request sent by a source node
  • Step 402 Send a handover response of the handover request to the source node, the handover response includes a handover command, and the handover command includes a first dual connection configuration;
  • Step 403 Establish a connection with the terminal
  • Step 404 Send a single connection configuration to the terminal.
  • the handover command further includes terminal capability division information, and the establishment of the connection with the terminal is performed when the source node accepts the handover command;
  • the target node receives a notification message sent by the source node indicating that the handover command is rejected.
  • the above may be to divide the terminal capabilities, for example: divide a part of the terminal capabilities to correspond to the target node, and divide another part to correspond to the source node.
  • the source node can confirm whether to accept the handover command according to the terminal capability division information. In addition, after the source node rejects the handover command, it can fall back to the conventional cell handover mode.
  • the method further includes:
  • the single connection configuration is transmitted through SRB1 or SRB2 or SRB3.
  • the method further includes:
  • the method further includes:
  • the method further includes:
  • this embodiment is an implementation manner of the target node corresponding to the embodiment shown in FIG. 2.
  • the embodiments are not described in detail, and the same beneficial effects can also be achieved.
  • FIG. 5 is a flowchart of another cell switching method provided by some embodiments of the present disclosure. The method is applied to a source node. As shown in FIG. 5, the method includes the following steps:
  • Step 501 Send a handover request to the target node
  • Step 502 Receive a handover response sent by the target node to the handover request, where the handover response includes a handover command, and the handover command includes a first dual connection configuration;
  • Step 503 Send the handover command to the terminal
  • Step 504 Disconnect the terminal, wherein the disconnection is disconnected after the terminal establishes a connection with the target node.
  • the handover command further includes terminal capability division information
  • the sending the handover command to the terminal includes:
  • the source node sends a notification message indicating that the handover command is rejected to the target node.
  • the method further includes:
  • the method further includes:
  • the switching command is transmitted through SRB1 or SRB2.
  • the method further includes:
  • the first notification message used to notify the first dual connection configuration or the single connection configuration has taken effect, or used to notify the release of the dual connection reserved by the source node Capital; and / or,
  • the method further includes:
  • this embodiment is an implementation of the source node corresponding to the embodiment shown in FIG. 2.
  • reference may be made to the relevant description of the embodiment shown in FIG. The embodiments are not described in detail, and the same beneficial effects can also be achieved.
  • the dual connection configuration message sent to the terminal at the source node on the network side can be implemented.
  • the target node configures the terminal with a single connection.
  • the handover command (in the reconfiguration message) issued by the source node to the terminal includes a dual connection configuration part, which can be configured using SRB1 / SRB2, and can include related configurations of two connections.
  • the source node can accept the dual connection configuration command and apply it, or reject the dual connection configuration command, and notify the target node to fall back to the normal handover.
  • the terminal may confirm the network as follows after receiving the handover command:
  • the reconfiguration message itself (including reconfigured dual connection or single connection message);
  • the source node After receiving the confirmation message, the source node informs the target node that the handover command is successfully issued and the dual connection configuration takes effect.
  • the target node configures the terminal with a single cell configuration and disconnects the dual connection. It can be configured through SRB1 / 2/3. Before disconnection, the terminal / target cell may notify the source node that the dual connection configuration has been completed.
  • the terminal may initiate a confirmation completion message to the target node to complete the handover process.
  • This confirmation message includes confirmation of the single connection application and confirmation of the end of the process;
  • the destination node After receiving the confirmation message, the destination node informs the source node that the single connection configuration takes effect, and the original dual connection configuration can be deleted.
  • the cell switching method may be used for any cell switching process, such as handover and secondary cell switching, where the secondary cell switching may be SN switching (SN switching) ), Primary and secondary cell (Primary Secondary Cell, PSCell) conversion, secondary cell (Secondary Cell, Scell conversion, etc.), of course, can also be used for negotiation of cell conversion of different systems, and can also be used for negotiation of UE capabilities of multiple cells simultaneously changing and many more.
  • SN switching SN switching
  • PSCell Primary and secondary cell
  • secondary cell Secondary Cell, Scell conversion, etc.
  • the terminal may use different configurations to complete the entire process, and introduce confirmation and inter-network notification at an appropriate time.
  • Step 1 The terminal reports a measurement report (Measurement Report) to the source node.
  • Step 2 The source node sends a handover request (HO Request) to the target node.
  • HO Request handover request
  • Step 3 The target node sends a handover response (HO Response) to the source node.
  • HO Response handover response
  • Step 4 The source node sends an RRC reconfiguration message to the terminal, where the RRC reconfiguration message is a HO command.
  • Step 4a The terminal sends an RRC reconfiguration complete message (RRC Reconfiguration Complete) to the source node.
  • RRC Reconfiguration Complete RRC Reconfiguration Complete
  • Step 4b The source node sends a confirmation message of DC configuration (Confirmation of configuration) to the target node.
  • step 4 the terminal applies DC configuration (Apply DC configuration).
  • step 4a and step 4b may be performed after step 4 and before applying DC configuration.
  • the RRC reconfiguration completion message may be used to confirm the RRC reconfiguration message , That is, confirm whether the terminal successfully receives the RRC reconfiguration complete message, and the above DC configuration confirmation message can be used to confirm the validity of the DC configuration, that is, the DC configuration is considered executable to the terminal.
  • the above steps 4a and 4b may also be sent after the DC configuration is applied.
  • the RRC reconfiguration completion message may be used to confirm the RRC reconfiguration message.
  • the above DC configuration confirmation message may be used to validate the DC configuration Confirmation of the availability, or confirmation that the DC configuration has been applied.
  • Step 5 The terminal synchronizes with the target node (Synchronization), for example, a random access process (Random Access Channel, RACH) may be initiated.
  • Synchronization for example, a random access process (Random Access Channel, RACH) may be initiated.
  • RACH Random Access Channel
  • the terminal can send and receive data with the source node, and can also send and receive data with the target node.
  • Step 6 The target node sends an RRC reconfiguration message (RRC Reconfiguration) to the terminal.
  • RRC reconfiguration message is used to transmit the single connection configuration.
  • the above single connection configuration may include the target cell configuration, so that after step 6, the terminal may apply the target cell configuration (Apply Target Configuration).
  • Step 7 The terminal sends an interruption source node connection instruction (Indication of breaking the source connection (HO complete)) to the target node, which indicates that the handover is completed.
  • an interruption source node connection instruction Indication of breaking the source connection (HO complete)
  • Step 8 The terminal disconnects from the source node.
  • Step 9 The terminal transmits data with the target node.
  • the handover request in step 2 may include source-CG (cell-group) configuration, and may also include terminal capability information (UE capability).
  • the above handover response may include a dual connection configuration (DC configuration for source-CG and target-CG) of the source cell group and the target cell group, and terminal capability division information (UE capability split).
  • the source cell group configuration includes the source cell configuration
  • the target cell group configuration includes the target cell configuration.
  • the terminal capability division information may indicate the terminal capabilities divided into the source cell group and the target cell group. The terminal capabilities corresponding to the source cell group and the target cell group may be different.
  • FIG. 8 is a structural diagram of a terminal provided by some embodiments of the present disclosure. As shown in FIG. 8, the terminal 800 includes:
  • the first receiving module 801 is configured to receive a handover command sent by a source node, where the handover command includes a first dual connection configuration;
  • the establishment module 802 is configured to establish a connection with the target node according to the first dual connection configuration
  • the second receiving module 803 is configured to receive the single connection configuration sent by the target node
  • the disconnect module 805 is configured to disconnect the source node.
  • the terminal 800 further includes:
  • the first sending module 806 is configured to send a first confirmation message to the source node, where the first confirmation message includes at least one of the following:
  • the switching command is transmitted through SRB1 or SRB2.
  • the single connection configuration is transmitted through SRB1 or SRB2 or SRB3.
  • the terminal 800 further includes:
  • the second sending module 807 is configured to send a first notification message to the source node, where the first notification message is used to notify that the first dual connection configuration or the single connection configuration has taken effect, or to notify the release Describe the dual connection resources reserved by the source node.
  • the terminal 800 further includes:
  • the third receiving module 808 is configured to receive the second dual connection configuration sent by the target node
  • the conversion module 809 is configured to perform at least one of a conversion bearer type, a conversion anchor node, and a conversion key according to the second dual connection configuration.
  • the terminal 800 further includes:
  • the third sending module 8010 is configured to send a second confirmation message to the target node, where the second confirmation message includes at least one of the following:
  • the application module 804 is configured to apply the single connection configuration by default according to preset conditions.
  • the application module 804 is configured to apply the single connection configuration according to the received network indication or reconfiguration message.
  • the terminal provided by some embodiments of the present disclosure can implement various processes implemented by the terminal in the method embodiment of FIG. 2. To avoid repetition, details are not described here again, and the communication delay of the terminal can be reduced.
  • FIG. 13 is a structural diagram of another terminal provided by some embodiments of the present disclosure.
  • the terminal 1300 includes:
  • the receiving module 1301 is configured to receive a switching command sent by the source node, where the switching command includes a dual connection configuration and a single connection configuration of the destination node;
  • the establishment module 1302 is configured to establish a connection with the target node according to the dual connection configuration
  • the application module 1303 is used to apply the single connection configuration of the target node
  • the disconnect module 1304 is configured to disconnect the source node.
  • the application module 1303 is configured to apply the single connection configuration of the target node if the access of the target node is completed; or
  • the application module 1303 is configured to apply the single connection configuration of the target node by default according to preset conditions.
  • the application module 1303 is configured to apply the single connection configuration of the target node according to the received network indication or reconfiguration message, and report the indication that the single connection configuration of the target node takes effect to the network.
  • the terminal provided by some embodiments of the present disclosure can implement various processes implemented by the terminal in the method embodiment of FIG. 3. To avoid repetition, details are not described here again, and communication delay of the terminal can be reduced.
  • FIG. 14 is a structural diagram of a communication node provided by some embodiments of the present disclosure.
  • the communication node is a target node.
  • the communication node includes:
  • the first receiving module 1401 is configured to receive the handover request sent by the source node
  • the first sending module 1402 is configured to send a handover response of the handover request to the source node, the handover response includes a handover command, and the handover command includes a first dual connection configuration;
  • the establishment module 1403 is used to establish a connection with the terminal
  • the second sending module 1404 is configured to send the single connection configuration to the terminal.
  • the handover command further includes terminal capability division information, and the establishment of the connection with the terminal is performed when the source node accepts the handover command;
  • the target node receives a notification message sent by the source node indicating that the handover command is rejected.
  • the communication device 1400 further includes:
  • the second receiving module 1405 is configured to receive a third confirmation message sent by the source node, where the third confirmation message includes at least one of the following:
  • the single connection configuration is transmitted through SRB1 or SRB2 or SRB3.
  • the communication device 1400 further includes:
  • the third sending module 1406 is configured to send a second notification message to the source node, where the second notification message is used to notify the notification message that the single connection configuration has taken effect, or to notify the release of the source node The remaining dual connection resources.
  • the communication device 1400 further includes:
  • the fourth sending module 1407 is configured to send the second dual connection configuration to the terminal.
  • the communication device 1400 further includes:
  • the third receiving module 1408 is configured to receive a second confirmation message sent by the terminal, where the second confirmation message includes at least one of the following:
  • the terminal provided by some embodiments of the present disclosure can implement various processes implemented by the target node in the method embodiment of FIG. 4. To avoid repetition, details are not described here, and the communication delay of the terminal can be reduced.
  • FIG. 19 is a structural diagram of another communication node provided by some embodiments of the present disclosure.
  • the communication node is a source node.
  • the communication device 1900 includes:
  • the first sending module 1901 is used to send a handover request to the target node
  • the first receiving module 1902 is configured to receive a handover response sent by the target node to the handover request, the handover response includes a handover command, and the handover command includes a first dual connection configuration;
  • a second sending module 1903 configured to send the switching command to the terminal
  • the disconnecting module 1904 is configured to disconnect the connection with the terminal, wherein the disconnection is disconnected after the terminal establishes a connection with the target node.
  • the handover command further includes terminal capability division information, and the sending the handover command to the terminal includes:
  • the source node sends a notification message indicating that the handover command is rejected to the target node.
  • the communication device 1900 further includes:
  • the second receiving module 1905 is configured to receive a first confirmation message sent by the terminal, where the first confirmation message includes at least one of the following:
  • the communication device 1900 further includes:
  • the third sending module 1906 is configured to send the third confirmation message to the target node, where the third confirmation message includes at least one of the following:
  • the switching command is transmitted through SRB1 or SRB2.
  • the communication device 1900 further includes:
  • the third receiving module 1907 is configured to receive a first notification message sent by the terminal, where the first notification message is used to notify that the first dual connection configuration or the single connection configuration has taken effect, or to notify the release Describe the dual connection resources reserved by the source node; and / or,
  • the fourth receiving module 1908 is configured to receive a second notification message sent by the target node, where the second notification message is used to notify the notification message that the single connection configuration has taken effect, or to notify the release of the source node Reserved dual connection resources.
  • the communication device 1900 further includes:
  • the release module 1909 is configured to release the dual connection resource reserved by the source node.
  • the terminal provided by some embodiments of the present disclosure can implement various processes implemented by the source node in the method embodiment of FIG. 5. To avoid repetition, details are not described here, and the communication delay of the terminal can be reduced.
  • FIG. 24 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present disclosure
  • the terminal 2400 includes but is not limited to: a radio frequency unit 2401, a network module 2402, an audio output unit 2403, an input unit 2404, a sensor 2405, a display unit 2406, a user input unit 2407, an interface unit 2408, a memory 2409, a processor 2410, and a power supply 2411 and other components.
  • a radio frequency unit 2401 includes but is not limited to: a radio frequency unit 2401, a network module 2402, an audio output unit 2403, an input unit 2404, a sensor 2405, a display unit 2406, a user input unit 2407, an interface unit 2408, a memory 2409, a processor 2410, and a power supply 2411 and other components.
  • terminal structure shown in FIG. 24 does not constitute a limitation on the terminal, and the terminal may include more or less components than those illustrated, or combine certain components, or arrange different components.
  • terminals include but are not limited to mobile phones, tablet computers, notebook computers, palmtop computers, in-vehicle
  • the radio frequency unit 2401 is configured to receive a handover command sent by a source node, the handover command includes a first dual connection configuration; according to the first dual connection configuration, establish a connection with a target node; receive the target Single connection configuration sent by the node;
  • a processor 2410 configured to apply the single connection configuration
  • the radio frequency unit 2401 is also used to disconnect the source node.
  • the radio frequency unit 2401 is further used to:
  • the switching command is transmitted through SRB1 or SRB2.
  • the single connection configuration is transmitted through SRB1 or SRB2 or SRB3.
  • the radio frequency unit 2401 before applying the single connection configuration and before disconnecting from the source node, the radio frequency unit 2401 is further used to:
  • the radio frequency unit 2401 is further used to:
  • At least one of conversion bearer type, conversion anchor node and conversion key is performed.
  • the radio frequency unit 2401 is further used to:
  • the application of the single connection configuration includes:
  • the single connection configuration is applied according to the received network indication or reconfiguration message.
  • the radio frequency unit 2401 is configured to receive a handover command sent by a source node, the handover command includes a dual connection configuration, and a single connection configuration of a destination node; according to the dual connection configuration, a connection is established with a target node ;
  • a processor 2410 configured to apply the single connection configuration of the target node
  • the radio frequency unit 2401 is also used to disconnect the source node.
  • the application of the single connection configuration of the target node includes:
  • the above terminal can reduce the communication delay of the terminal.
  • the radio frequency unit 2401 may be used to receive and send signals during sending and receiving information or during a call. Specifically, after receiving the downlink data from the base station, it is processed by the processor 2410; To send the uplink data to the base station.
  • the radio frequency unit 2401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 2401 can also communicate with the network and other devices through a wireless communication system.
  • the terminal provides users with wireless broadband Internet access through the network module 2402, such as helping users send and receive e-mail, browse web pages, and access streaming media.
  • the audio output unit 2403 may convert audio data received by the radio frequency unit 2401 or the network module 2402 or stored in the memory 2409 into audio signals and output as sound. Moreover, the audio output unit 2403 may also provide audio output related to a specific function performed by the terminal 2400 (eg, call signal reception sound, message reception sound, etc.).
  • the audio output unit 2403 includes a speaker, a buzzer, a receiver, and so on.
  • the input unit 2404 is used to receive audio or video signals.
  • the input unit 2404 may include a graphics processor (Graphics Processing Unit, GPU) 24041 and a microphone 24042, and the graphics processor 24041 may process a still picture or a video image obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode The data is processed.
  • the processed image frame may be displayed on the display unit 2406.
  • the image frame processed by the graphics processor 24041 may be stored in the memory 2409 (or other storage medium) or sent via the radio frequency unit 2401 or the network module 2402.
  • the microphone 24042 can receive sound, and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to the mobile communication base station via the radio frequency unit 2401 in the case of a telephone call mode and output.
  • the terminal 2400 also includes at least one sensor 2405, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 24061 according to the brightness of the ambient light, and the proximity sensor can close the display panel 24061 and / or when the terminal 2400 moves to the ear Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when at rest, and can be used to identify terminal postures (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc .; sensor 2405 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be repeated here.
  • the display unit 2406 is used to display information input by the user or information provided to the user.
  • the display unit 2406 may include a display panel 24061, and the display panel 24061 may be configured in the form of a liquid crystal display (Liquid Crystal) (LCD), an organic light emitting diode (Organic Light-Emitting Diode, OLED), or the like.
  • LCD Liquid Crystal
  • OLED Organic Light-Emitting Diode
  • the user input unit 2407 can be used to receive input numeric or character information, and generate key signal input related to user settings and function control of the terminal.
  • the user input unit 2407 includes a touch panel 24071 and other input devices 24072.
  • the touch panel 24071 also known as a touch screen, can collect user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc. on or near the touch panel 24071 operating).
  • the touch panel 24071 may include a touch detection device and a touch controller.
  • the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device and converts it into contact coordinates, and then sends To the processor 2410, the command sent from the processor 2410 is received and executed.
  • the touch panel 24071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the user input unit 2407 may also include other input devices 24072.
  • other input devices 24072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not repeated here.
  • the touch panel 24071 may be overlaid on the display panel 24061.
  • the touch panel 24071 detects a touch operation on or near it, it is transmitted to the processor 2410 to determine the type of touch event, and then the processor 2410 according to the touch The type of event provides corresponding visual output on the display panel 24061.
  • the touch panel 24071 and the display panel 24061 are implemented as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 24071 and the display panel 24061 may be integrated to The input and output functions of the terminal are implemented, which is not limited here.
  • the interface unit 2408 is an interface for connecting an external device to the terminal 2400.
  • the external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input / output (I / O) port, video I / O port, headphone port, etc.
  • the interface unit 2408 may be used to receive input from external devices (eg, data information, power, etc.) and transmit the received input to one or more elements within the terminal 2400 or may be used between the terminal 2400 and external devices Transfer data between.
  • the memory 2409 can be used to store software programs and various data.
  • the memory 2409 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required by at least one function (such as a sound playback function, an image playback function, etc.), etc .; Data created by the use of mobile phones (such as audio data, phone books, etc.), etc.
  • the memory 2409 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 2410 is the control center of the terminal, and uses various interfaces and lines to connect the various parts of the entire terminal, by running or executing the software programs and / or modules stored in the memory 2409, and calling the data stored in the memory 2409, to execute Various functions and processing data of the terminal, so as to monitor the terminal as a whole.
  • the processor 2410 may include one or more processing units; optionally, the processor 2410 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs, etc.
  • the modulation processor mainly handles wireless communication. It can be understood that the above-mentioned modem processor may not be integrated into the processor 2410.
  • the terminal 2400 may further include a power supply 2411 (such as a battery) that supplies power to various components.
  • a power supply 2411 may be logically connected to the processor 2410 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system And other functions.
  • the terminal 2400 includes some function modules not shown, which will not be repeated here.
  • some embodiments of the present disclosure also provide a terminal, including a processor 2410, a memory 2409, and a computer program stored on the memory 2409 and executable on the processor 2410.
  • the computer program is used by the processor 2410.
  • each process of the foregoing cell switching method embodiment is achieved, and the same technical effect can be achieved. To avoid repetition, details are not described here.
  • FIG. 25 is a structural diagram of another communication node provided by some embodiments of the present disclosure.
  • the communication node is a target node.
  • the communication node 2500 includes: a processor 2501, a transceiver 2502 , Memory 2503 and bus interface, including:
  • the transceiver 2502 is configured to receive a handover request sent by a source node; send a handover response of the handover request to the source node, the handover response includes a handover command, and the handover command includes a first dual connection configuration; and the The terminal establishes a connection; sends a single connection configuration to the terminal.
  • the handover command further includes terminal capability division information, and the establishment of the connection with the terminal is performed when the source node accepts the handover command;
  • the target node receives a notification message sent by the source node indicating that the handover command is rejected.
  • the transceiver 2502 is further used to:
  • the single connection configuration is transmitted through SRB1 or SRB2 or SRB3.
  • the transceiver 2502 is further used to:
  • the transceiver 2502 is also used to:
  • the transceiver 2502 is further used to:
  • the above target node can reduce the communication delay of the terminal.
  • the transceiver 2502 is used to receive and transmit data under the control of the processor 2501, and the transceiver 2502 includes at least two antenna ports.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 2501 and various circuits of the memory represented by the memory 2503 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the transceiver 2502 may be a plurality of elements, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium.
  • the user interface 2504 may also be an interface that can be externally connected to the required device.
  • the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, and a joystick.
  • the processor 2501 is responsible for managing the bus architecture and general processing, and the memory 2503 may store data used by the processor 2501 when performing operations.
  • some embodiments of the present disclosure also provide a network device, including a processor 2501, a memory 2503, and a computer program stored on the memory 2503 and executable on the processor 2501, the computer program being processed by the processor During the execution of 2501, the processes of the foregoing cell handover method embodiments are implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.
  • FIG. 26 is a structural diagram of another communication node provided by some embodiments of the present disclosure.
  • the communication node is a source node.
  • the communication node 2600 includes: a processor 2601 and a transceiver 2602 , Memory 2603 and bus interface, including:
  • the transceiver 2602 is used to send a handover request to a target node; receive a handover response from the target node to send the handover request, the handover response includes a handover command, and the handover command includes a first dual connection configuration; The switching command; disconnecting from the terminal, wherein the disconnection is disconnected after the terminal establishes a connection with the target node.
  • the handover command further includes terminal capability division information
  • the sending the handover command to the terminal includes:
  • the source node sends a notification message indicating that the handover command is rejected to the target node.
  • the transceiver 2602 is further used to:
  • the transceiver 2602 is further configured to:
  • the switching command is transmitted through SRB1 or SRB2.
  • the transceiver 2602 is further used to:
  • the first notification message used to notify the first dual connection configuration or the single connection configuration has taken effect, or used to notify the release of the dual connection reserved by the source node Capital; and / or,
  • the processor 2501 is further configured to:
  • the above source node can reduce terminal communication delay.
  • the transceiver 2602 is used to receive and send data under the control of the processor 2601.
  • the transceiver 2602 includes at least two antenna ports.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 2601 and various circuits of the memory represented by the memory 2603 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the transceiver 2602 may be a plurality of elements, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium.
  • the user interface 2604 may also be an interface that can be externally connected to the required device.
  • the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, and a joystick.
  • the processor 2601 is responsible for managing the bus architecture and general processing, and the memory 2603 can store data used by the processor 2601 in performing operations.
  • some embodiments of the present disclosure also provide a network device, including a processor 2601, a memory 2603, a computer program stored on the memory 2603 and executable on the processor 2601, the computer program is processed by the processor During the execution of 2601, the processes of the above embodiment of the cell handover method are implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.
  • Some embodiments of the present disclosure also provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium.
  • the computer program is executed by a processor to implement a cell handover method on a terminal side provided by some embodiments of the present disclosure
  • Various processes of the embodiments, or when the computer program is executed by a processor to implement various processes of the embodiment of the method for cell handover on the target node side provided by some embodiments of the present disclosure, or when the computer program is executed by a processor to implement the The process of the embodiment of the method for cell handover on the source node side provided by some embodiments can achieve the same technical effect. To avoid repetition, details are not described here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

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Abstract

本公开的一些实施例提供一种小区切换方法、终端和通信节点，该方法包括：接收源节点发送的切换命令，所述切换命令包括第一双连接配置；根据所述第一双连接配置，与目标节点建立连接；接收所述目标节点发送的单连接配置；应用所述单连接配置；断开与所述源节点的连接。

Description

小区切换方法、终端和通信节点
相关申请的交叉引用
本申请主张在2018年11月9日在中国提交的中国专利申请号No.201811334502.2的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种小区切换方法、终端和通信节点。
背景技术
通信系统中终端经常会发生小区切换，即从源节点切换至目标节点。目前通信系统中，终端在小区切换过程中，终端根据源节点发送的切换命令，断开与源节点之间的连接，之后向目标节点发起接入，以连接至目标节点，也就是说，相关技术中的切换过程中终端会存在中断延时，从而导致终端通信时延比较大。
发明内容
本公开的一些实施例提供一种小区切换方法、终端和通信节点，以解决终端通信时延比较大的问题。
第一方面，本公开的一些实施例提供一种小区切换方法，应用于终端，包括：
接收源节点发送的切换命令，所述切换命令包括第一双连接配置；
根据所述第一双连接配置，与目标节点建立连接；
接收所述目标节点发送的单连接配置；
应用所述单连接配置；
断开与所述源节点的连接。
第二方面，本公开的一些实施例提供一种小区切换方法，应用于终端，包括：
接收源节点发送的切换命令，所述切换命令包括双连接配置，以及目的节点的单连接配置；
根据所述双连接配置，与目标节点建立连接；
应用所述目标节点的单连接配置；
断开与所述源节点的连接。
第三方面，本公开的一些实施例提供一种小区切换方法，应用于目标节点，包括：
接收源节点发送的切换请求；
向所述源节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
与所述终端建立连接；
向所述终端发送单连接配置。
第四方面，本公开的一些实施例提供一种小区切换方法，应用于源节点，包括：
向目标节点发送切换请求；
接收所述目标节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
向终端发送所述切换命令；
断开与所述终端的连接，其中，所述断开是在所述终端与所述目标节点建立连接后断开的。
第五方面，本公开的一些实施例提供一种终端，包括：
第一接收模块，用于接收源节点发送的切换命令，所述切换命令包括第一双连接配置；
建立模块，用于根据所述第一双连接配置，与目标节点建立连接；
第二接收模块，用于接收所述目标节点发送的单连接配置；
应用模块，用于应用所述单连接配置；
断开模块，用于断开与所述源节点的连接。
第六方面，本公开的一些实施例提供一种终端，包括：
接收模块，用于接收源节点发送的切换命令，所述切换命令包括双连接 配置，以及目的节点的单连接配置；
建立模块，用于根据所述双连接配置，与目标节点建立连接；
应用模块，用于应用所述目标节点的单连接配置；
断开模块，用于断开与所述源节点的连接。
第七方面，本公开的一些实施例提供一种通信节点，所述通信节点为目标节点，包括：
第一接收模块，用于接收源节点发送的切换请求；
第一发送模块，用于向所述源节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
建立模块，用于与所述终端建立连接；
第二发送模块，用于向所述终端发送单连接配置。
第八方面，本公开的一些实施例提供一种通信节点，所述通信节点为源节点，包括：
第一发送模块，用于向目标节点发送切换请求；
第一接收模块，用于接收所述目标节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
第二发送模块，用于向终端发送所述切换命令；
断开模块，用于断开与所述终端的连接，其中，所述断开是在所述终端与所述目标节点建立连接后断开的。
第九方面，本公开的一些实施例提供一种终端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现本公开的一些实施例第一方面提供的小区切换方法中的步骤。
第十方面，本公开的一些实施例提供一种终端，其特征在于，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现本公开的一些实施例第二方面提供的小区切换方法中的步骤。
第十一方面，本公开的一些实施例提供一种通信节点，所述通信节点为目标节点，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现本公开的一些实施例第三 方面提供的小区切换方法中的步骤。
第十二方面，本公开的一些实施例提供一种通信节点，所述通信节点为源节点，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现本公开的一些实施例第四方面提供的小区切换方法中的步骤。
第十二方面，本公开的一些实施例提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现本公开的一些实施例第一方面提供的小区切换方法中的步骤，或者，所述计算机程序被处理器执行时实现本公开的一些实施例第二方面提供的小区切换方法中的步骤，或者，所述计算机程序被处理器执行时实现本公开的一些实施例第三方面提供的小区切换方法中的步骤，或者，所述计算机程序被处理器执行时实现本公开的一些实施例第四方面提供的小区切换方法中的步骤。
本公开的一些实施例中，接收源节点发送的切换命令，所述切换命令包括第一双连接配置；根据所述第一双连接配置，与目标节点建立连接；接收所述目标节点发送的单连接配置；应用所述单连接配置；断开与所述源节点的连接。这样可以实现在切换时终端与目标节点建立有连接，且与源节点与保持有连接，从而降低终端通信时延。
附图说明
图1是本公开的一些实施例可应用的一种网络系统的结构图；
图2是本公开的一些实施例提供的一种小区切换方法的流程图；
图3是本公开的一些实施例提供的另一种小区切换方法的流程图；
图4是本公开的一些实施例提供的另一种小区切换方法的流程图；
图5是本公开的一些实施例提供的另一种小区切换方法的流程图；
图6是本公开的一些实施例提供的另一种小区切换方法的示意图；
图7是本公开的一些实施例提供的另一种小区切换方法的示意图；
图8是本公开的一些实施例提供的一种终端的结构图；
图9是本公开的一些实施例提供的另一种终端的结构图；
图10是本公开的一些实施例提供的另一种终端的结构图；
图11是本公开的一些实施例提供的另一种终端的结构图；
图12是本公开的一些实施例提供的另一种终端的结构图；
图13是本公开的一些实施例提供的另一种终端的结构图；
图14是本公开的一些实施例提供的一种通信设备的结构图；
图15是本公开的一些实施例提供的另一种通信设备的结构图；
图16是本公开的一些实施例提供的另一种通信设备的结构图；
图17是本公开的一些实施例提供的另一种通信设备的结构图；
图18是本公开的一些实施例提供的另一种通信设备的结构图；
图19是本公开的一些实施例提供的另一种通信设备的结构图；
图20是本公开的一些实施例提供的另一种通信设备的结构图；
图21是本公开的一些实施例提供的另一种通信设备的结构图；
图22是本公开的一些实施例提供的另一种通信设备的结构图；
图23是本公开的一些实施例提供的另一种通信设备的结构图；
图24是本公开的一些实施例提供的另一种终端的结构图；
图25是本公开的一些实施例提供的另一种通信设备的结构图；
图26是本公开的一些实施例提供的另一种通信设备的结构图。
具体实施方式
下面将结合本公开的一些实施例中的附图，对本公开的一些实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本申请的说明书和权利要求书中的术语“包括”以及它的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一，例 如A和/或B，表示包含单独A，单独B，以及A和B都存在三种情况。
在本公开的一些实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本公开的一些实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
下面结合附图介绍本公开的实施例。本公开的一些实施例提供的小区切换方法、终端和通信节点可以应用于无线通信系统中。该无线通信系统可以为采用5G系统，或者演进型长期演进(Evolved Long Term Evolution，eLTE)系统，或者后续演进通信系统。
请参见图1，图1是本公开的一些实施例可应用的一种网络系统的结构图，如图1所示，包括终端11、源节点12和目标节点13，其中，终端11可以是用户终端(User Equipment，UE)或者其他终端侧设备，例如：手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(personal digital assistant，PDA)、移动上网装置(Mobile Internet Device，MID)或可穿戴式设备(Wearable Device)等终端侧设备，需要说明的是，在本公开的一些实施例中并不限定终端11的具体类型。而上述源节点12和目标节点13可以是：切换过程中的源基站和目标基站；或双连接(Dual Connectivity，DC)中的源辅节点(secondary node，SN)和目标SN；或DC中的源主节点(Master Node，MN)和目标SN。另外，对于SCG变换(change)过程，上述源节点12可以是源MN和/或源SN，而目标节点可以是目标SN。值得指出的是，本公开所述DC双连接配置，指的是源节点和目标节点同时给终端提供服务的配置(两个节点和终端之间同时收/发)；本公开所述单连接(Single Connectivity，SC)配置，指的是目标节点单独给终端提供服务的配置。
请参见图2，图2是本公开的一些实施例提供的一种小区切换方法的流程图，该方法应用于终端，如图2所示，包括以下步骤：
步骤201、接收源节点发送的切换命令，所述切换命令包括第一双连接配置。
其中，上述切换命令(HO command)可以是配置消息，例如：重配消息， 进一步，上述切换命令可以是无线资源控制重配消息(RRC Reconfiguration)。也就是说，本公开的一些实施例中，上述切换命令也可以称作配置消息或者重配消息。
而上述第一双连接配置可以是目标节点和上述源节点的双连接配置，即该双连接配置中包括终端与目标节点和源节点建立双连接的相关配置，例如：物理层、层二和层三配置等。
步骤202、根据所述第一双连接配置，与目标节点建立连接。
该步骤可以是，使用该双连接配置中目标节点的配置与目标节点建立连接，例如：使用该双连接配置中目标节点的物理层、层二和层三配置等配置中的至少一项与目标节点建立连接。
需要说明的是，在根据上述第一双连接配置与目标节点建立连接时，终端还保持有与源小区的连接，即根据上述根据所述第一双连接配置，与目标节点建立连接后，则终端与源节点和目标节点之间构成了双连接，或者可以称作，应用上述第一双连接配置，实现对应的双连接。
步骤203、接收所述目标节点发送的单连接配置。
其中，上述单连接配置可以是通过配置消息，例如：RRC重配消息发送的。其中，上述单连接配置可以包括终端与上述目标节点单连接的配置，例如：该单连接的物理层、层二和层三配置等。另外，上述单连接还可以是终端与目标节点中的目标小区(Target Cell)的单连接，则上述单连接配置也可以是该目标小区的配置，例如：物理层、层二和层三配置等。
需要说明的是，本公开的一些实施例中，双连接配置也可以称作双连接配置信息，而单连接配置也可以称作单连接配置信息。
步骤204、应用所述单连接配置。
上述应用单连接配置可以是，将该单连接配置应用于相应的实体或者进行相应的配置操作，例如：单连接配置中的物理层、层二和层三配置分别应用于物理层、层二和层三。
步骤205、断开与所述源节点的连接。
而上述断开与所述源节点的连接可以是，可以是在终端应用所述单连接配置应用上述单连接配置之后断开的，当然，对此不作限定，例如：也可以在 应用上述单连接配置时断开的。
通过上述步骤可以实现在切换时终端与目标节点建立有连接，且与源节点与保持有连接，即终端在切换过程中同时在源节点和目标节点有连接，可以进行数据的收发，保证数据收发不中断，即实现移动过程中的0ms中断延时，达到降低终端通信时延的效果。
作为一种可选的实施方式，上述接收源节点发送的切换命令之后，所述方法还包括：
向所述源节点发送第一确认消息，其中，所述第一确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
其中，上述切换命令的确认信息可以表示终端是否成功接收到切换命令，另外，由于上述切换命令可以是重配消息，从而上述切换命令的确认信息也可以称作该重配消息的确认信息。
而上述第一双连接配置的确认信息可以表示终端是否成功解析第一双连接配置。
该实施方式中，由于向切换命令的确认信息和第一双连接配置的确认信息中的至少一项，从而可以提高终端上报确认消息的精确度。
作为一种可选的实施方式，上述切换命令通过信令无线承载(Signaling Radio Bearers，SRB)1或者SRB2进行传输。值得指出的是，在源节点和目的节点同时服务终端的过程中，源节点的SRBX和目的节点的SRBY可以同时存在，或者某一个时刻只存在其中给一个。
其中，上述SRB1和SRB2可以是协议中定义的SRB1和SRB2，例如：SRB1可以用于传输RRC消息，在逻辑信道专用控制信道(Dedicated Control Channel，DCCH)上传输；而SRB2可以用于传输非接入层(Non-access stratum，NAS)消息，在逻辑信道DCCH上传输。
该实施方式中，由于可以通过SRB1或者SRB2传输切换命令，从而可以提高传输切换命令的灵活性。
作为一种可选的实施方式，所述单连接配置通过SRB1或者SRB2或者 SRB3进行传输。
其中，上述SRB3可以是5G协议中新定义的SRB3，该SRB可以在长期演进(Long Term Evolution，LTE)系统和新空口(New Radio，NR)系统结合的双连接传输。
该实施方式中，由于可以支持目标节点通过SRB1或者SRB2或者SRB3向终端传输单连接配置，从而可以提高传输单连接配置的灵活性。
作为一种可选的实施方式，所述断开与所述源节点的连接之前，所述方法还包括：
向所述源节点发送第一通知消息，所述第一通知消息用于通知所述第一双连接配置或者所述单连接配置已生效，或者用于通知释放所述源节点预留的双连接资源。
其中，上述第一双连接配置已生效可以是终端接收到该配置，或者已应用该配置，上述单连接配置已生效可以是终端接收到该配置，或者已应用该配置。
这样通过上述第一通知消息可以使得源节点及时释放所述源节点预留的双连接资源，以节约资源。
作为一种可实施方式，所述目标节点建立连接之后，所述方法还包括：
接收所述目标节点发送的第二双连接配置；
根据所述第二双连接配置，执行转换承载类型、转换锚定节点和转换密钥中的至少一项。
其中，上述第二双连接配置可以是上述目标节点同上述单连接配置一同下发的，例如：通过某一重配消息向终端下发上述单连接配置和上述第二双连接配置。当然，对此不作限定，例如：目标节点可以通过不同的重配消息向终端下发上述单连接配置和上述第二双连接配置。
另外，上述第二双连接配置可以是上述目标节点与其他节点的双连接配置。
该实施方式中，通过上述第二双连接配置执行转换承载类型、转换锚定节点和转换密钥，从而提高终端的通信性能。
作为一种可选的实施方式，上述接收所述目标节点发送的单连接配置之 后，所述方法还包括：
向所述目标节点发送第二确认消息，所述第二确认消息包括如下至少一项：
所述单连接配置的确认信息；
小区切换流程结束的确认信息。
其中，上述单连接配置的确认信息可以表示上述单连接配置已应用或者已生效，而上述小区切换流程结束的确认信息可以表示上述小区切换流程已结束。从而通过上述第二确认消息及时通知目标节点终端当前的状态，以提高目标节点的工作效率。
进一步，目标节点接收到上述第二确认消息后，可以向源节点发送第二通知消息，以通知所述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双连接资源，以使得源节点及时释放所述源节点预留的双连接资源，以节约资源。
作为一种可选的实施方式，上述应用所述单连接配置，包括：
根据预设条件默认应用所述单连接配置；或者
根据接收的网络指示或重配消息应用所述单连接配置。
其中，上述预设条件可以是预设时间点或者其他条件，且上述预设条件可以是上述终端预先定义的，或者网络预先配置的等，由于根据预设条件默认应用所述单连接配置，从而提高应用单连接配置的灵活性，以适用不同业务或者不同场景的需求。
而上述网络指示可以是源节点发送的指示或者目标节点发送的指示，同理，上述将所述单连接配置生效的指示上报网络可以是，将所述单连接配置生效的指示上报源节点或者目标节点。
另外，上述重配消息可以用于传输上述单连接配置的配置消息，或者上述重配置消息可以源节点或者目标节点发送的其他配置消息。
由于可以根据网络指示或重配消息应用所述单连接配置可以提高应用单连接配置的灵活性，以适用不同业务或者不同场景的需求。另外，还可以将所述单连接配置生效的指示上报网络，这样可以使得源节点或者目标节点可以及时确认终端的状态。
本公开的一些实施例中，接收源节点发送的切换命令，所述切换命令包括第一双连接配置；根据所述第一双连接配置，与目标节点建立连接；接收所述目标节点发送的单连接配置；应用所述单连接配置；断开与所述源节点的连接。这样可以实现在切换时终端与目标节点建立有连接，且与源节点与保持有连接，从而降低终端通信时延。
请参见图3，图3是本公开的一些实施例提供的另一种小区切换方法的流程图，该方法应用于终端，如图3所示，包括以下步骤：
步骤301、接收源节点发送的切换命令，所述切换命令包括双连接配置，以及目的节点的单连接配置；
步骤302、根据所述双连接配置，与目标节点建立连接；
步骤303、应用所述目标节点的单连接配置；
步骤304、断开与所述源节点的连接。
其中，上述双连接配置和单连接配置可以参见图2所示的实施例中的第一双连接配置和单连接配置，此处不作赘述。
另外，上述与目标节点建立连接，以及应用所述目标节点的单连接配置同样可以参见图2所示的实施例的相应说明，此处不作赘述。
可选的，所述应用所述目标节点的单连接配置，包括：
若完成目标节点的接入，则应用所述目标节点的单连接配置；或者
根据预设条件默认应用所述目标节点的单连接配置；或者
根据接收的网络指示或重配消息应用所述目标节点的单连接配置，并将所述目标节点的单连接配置生效的指示上报网络。
其中，上述应用单连接可以参见图2所示的实施例的相应说明，此处不作赘述，且达到相同有益效果。另外，上述将所述目标节点的单连接配置生效的指示上报网络可以是向源节点或者目标节点上报单连接配置生效的指示。
本实施例中，通过上述步骤可以实现在切换时终端与目标节点建立有连接，且与源节点与保持有连接，即终端在切换过程中同时在源节点和目标节点有连接，可以进行数据的收发，保证数据收发不中断，即实现移动过程中的0ms中断延时，达到降低终端通信时延的效果。
请参见图4，图4是本公开的一些实施例提供的另一种小区切换方法的 流程图，该方法应用于目标节点，如图4所示，包括以下步骤：
步骤401、接收源节点发送的切换请求；
步骤402、向所述源节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
步骤403、与所述终端建立连接；
步骤404、向所述终端发送单连接配置。
可选的，所述切换命令还包括终端能力划分信息，所述与所述终端建立连接是在所述源节点接受所述切换命令的情况进行的；
其中，若所述源节点拒绝所述切换命令，则所述目标节点接收到所述源节点发送的用于表示拒绝所述切换命令的通知消息。
其中，上述可以是将终端能力进行划分，例如：将终端能力的一部分划分至与目标节点对应，将另一部分划分至与源节点对应。而源节点可以根据上述终端能力划分信息确认是否接受上述切换命令，另外，当源节点拒绝所述切换命令后，可以回落至常规的小区切换方式。
可选的，所述向所述源节点发送所述切换请求的切换响应之后，所述方法还包括：
接收所述源节点发送第三确认消息，其中，所述第三确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述单连接配置通过SRB1或者SRB2或者SRB3进行传输。
可选的，所述向所述终端发送单连接配置之后，或者收到所述终端的所述单连接配置生效指示之后，所述方法还包括：
向所述源节点发送第二通知消息，所述第二通知消息用于通知所述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双连接资源。
可选的，与所述终端建立连接之后，所述方法还包括：
向所述终端发送第二双连接配置。
可选的，所述向所述终端发送单连接配置之后，所述方法还包括：
接收所述终端发送的第二确认消息，所述第二确认消息包括如下至少一项：
所述单连接配置的确认信息；
小区切换流程结束的确认信息。
需要说明的是，本实施例作为与图2所示的实施例中对应的目标节点的实施方式，其具体的实施方式可以参见图2所示的实施例的相关说明，为了避免重复说明，本实施例不再赘述，且还可以达到相同有益效果。
请参见图5，图5是本公开的一些实施例提供的另一种小区切换方法的流程图，该方法应用于源节点，如图5所示，包括以下步骤：
步骤501、向目标节点发送切换请求；
步骤502、接收所述目标节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
步骤503、向终端发送所述切换命令；
步骤504、断开与所述终端的连接，其中，所述断开是在所述终端与所述目标节点建立连接后断开的。
可选的，所述切换命令还包括终端能力划分信息，所述向终端发送所述切换命令，包括：
若所述源节点接受所述切换命令，则向所述终端发送所述切换命令；
其中，若拒绝所述切换命令，则所述源节点向所述目标节点发送用于表示拒绝所述切换命令的通知消息。
可选的，所述向终端发送配置消息之后，所述方法还包括：
接收所述终端发送的第一确认消息，其中，所述第一确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述接收所述终端发送的第一确认消息之后，所述方法还包括：
向所述目标节点发送所述第三确认消息，其中，所述第三确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述切换命令通过SRB1或者SRB2进行传输。
可选的，所述向终端发送配置消息之后，所述方法还包括：
接收所述终端发送的第一通知消息，所述第一通知消息用于通知所述第一双连接配置或者所述单连接配置已生效，或者用于通知释放所述源节点预留的双连接资；和/或，
接收所述目标节点发送的第二通知消息，所述第二通知消息用于通知所述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双连接资源。
可选的，在接收到所述第一通知消息和/或所述第二通知消息之后，所述方法还包括：
释放所述源节点预留的双连接资源。
需要说明的是，本实施例作为与图2所示的实施例中对应的源节点的实施方式，其具体的实施方式可以参见图2所示的实施例的相关说明，为了避免重复说明，本实施例不再赘述，且还可以达到相同有益效果。
通过上述描述的实施例可以实现在网络侧在源节点给终端发送的双连接配置消息，在终端完成双连接配置后，再目标节点给终端配置单连接。
其中，针对DC配置消息，在源节点给终端下发的切换命令(重配消息中)，包含双连接配置部分，可以使用SRB1/SRB2进行配置，可以包括两个连接的相关配置。
另外，源节点在收到切换命令后，可以接受该双连接配置命令并应用，或者拒绝该双连接配置命令，并告知目标节点，回落至常规的切换。
针对终端对于双连接重配信令的确认，可以是终端收到切换命令后，对网络进行如下确认：
该重配消息本身(包括重配的双连接或者单连接消息)；
该切换命令；
消息中的DC配置；
以上的任意组合。
源节点在收到该确认消息后，告知目标节点切换命令下发成功/双连接配 置生效。
而针对目标小区单连接配置消息，接入目标小区后，目标节点给终端配置单小区配置，断开双连接。可以通过SRB1/2/3进行配置。在断开之前终端/目标小区可以通知源节点已完成双连接配置。
终端可以向目标节点发起确认完成消息，完成该切换过程。这个确认消息包括对该单连接应用的确认和该流程结束的确认；
目的节点在收到该确认消息后，告知源节点单连接配置生效，原有的双连接配置可以删除。
另外，需要说明的是，本公开的一些实施例中提供小区切换方法可以是用于任何的小区变换过程，如切换(handover)、辅小区变换，其中，辅小区变换可以是SN变换(SN change)、主辅小区(Primary Secondary Cell，PSCell)变换、辅小区(Secondary Cell，Scell变换等)，当然，也可用于异制式系统小区变换的协商，也可用于多个小区同时变换的UE能力协商等等。
采用本公开的一些实施例提供的方法，在双连接切换下，终端可以使用不同的配置完成整个流程，并且在合适的时机引入确认和网络间通知。
下面参考图6，对本公开的一些实施例提供的小区切换方法进行举例说明，如图6所示，包括如下步骤：
步骤1、终端向源节点上报测量报告(Measurement Report)。
步骤2、源节点向目标节点发送切换请求(HO Request)。
步骤3、目标节点向源节点发送切换响应(HO Response)。
步骤4、源节点向终端发送RRC重配消息，其中，该RRC重配消息为切换命令(HO command)。
步骤4a、终端向源节点发送RRC重配置完成消息(RRC Reconfiguration Complete)。
步骤4b、源节点向目标节点发送DC配置的确认消息(Confirmation of configuration)。
需要说明的是，由于上述切换命令包括DC配置，从而在执行步骤4之后，终端应用DC配置(Apply DC configuration)。
需要说明的是，步骤4a和步骤4b可以是在步骤4之后，在应用DC配 置之前执行的，例如，图6和图7所示，RRC重配置完成消息可以用于对RRC重配消息的确认，即确认终端是否成功接收到RRC重配置完成消息，而上述DC配置的确认消息可以用于对DC配置有效性的确认，即认为该DC配置对于终端是可执行的。
或者，上述步骤4a和步骤4b也可以是应用DC配置之后发送的，RRC重配置完成消息可以用于对RRC重配置消息的确认，当然，进一步上述DC配置的确认消息可以用于对DC配置有效性的确认，或者可以对已应用DC配置的确认。
步骤5、终端与目标节点进行同步(Synchronization)，例如：可以通过随机接入信道(Random Access Channel，RACH)发起随机接入过程。
在步骤5之后，终端与可以源节点进行数据收发，以及还可以与目标节点进行数据收发。
步骤6、目标节点向终端发送RRC重配消息(RRC Reconfiguration Complete)，该RRC重配置消息用于传输单连接配置。
其中，上述单连接配置可以包括目标小区配置，从而在步骤6之后，终端可以应用目标小区配置(Apply Target Cell configuration)。
步骤7、终端向目标节点发送中断源节点连接指示(Indication of breaking the source connection(HO complete))，即指示切换完成。
步骤8、终端与源节点中断连接。
步骤9、终端与目标节点传输数据。
进一步，可以如图7所示，步骤2中的切换请求可以包括源小区组配置(source–CG(cell group)configuration)，以及还可以包括终端能力信息(UE capability)。而上述切换响应可以包括源小区组和目标小区组的双连接配置(DC configuration for source-CG and target-CG)，以及终端能力划分信息(UE capability split)。其中，上述源小区组配置包括源小区配置，而上述目标小区组配置包括目标小区配置，上述终端能力划分信息可以表示划分至源小区组和目标小区组的终端能力，即在双连接中终端在源小区组和目标小区组对应的终端能力可以不同。
请参见图8，图8是本公开的一些实施例提供的一种终端的结构图，如 图8所示，终端800包括：
第一接收模块801，用于接收源节点发送的切换命令，所述切换命令包括第一双连接配置；
建立模块802，用于根据所述第一双连接配置，与目标节点建立连接；
第二接收模块803，用于接收所述目标节点发送的单连接配置；
应用模块804，用于应用所述单连接配置；
断开模块805，用于断开与所述源节点的连接。
可选的，如图9所示，终端800还包括：
第一发送模块806，用于向所述源节点发送第一确认消息，其中，所述第一确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述切换命令通过SRB1或者SRB2进行传输。
可选的，所述单连接配置通过SRB1或者SRB2或者SRB3进行传输。
可选的，如图10所示，终端800还包括：
第二发送模块807，用于向所述源节点发送第一通知消息，所述第一通知消息用于通知所述第一双连接配置或者所述单连接配置已生效，或者用于通知释放所述源节点预留的双连接资源。
可选的，如图11所示，终端800还包括：
第三接收模块808，用于接收所述目标节点发送的第二双连接配置；
转换模块809，用于根据所述第二双连接配置，执行转换承载类型、转换锚定节点和转换密钥中的至少一项。
可选的，如图12所示，终端800还包括：
第三发送模块8010，用于向所述目标节点发送第二确认消息，所述第二确认消息包括如下至少一项：
所述单连接配置的确认信息；
小区切换流程结束的确认信息。
可选的，应用模块804用于根据预设条件默认应用所述单连接配置；或者
应用模块804用于根据接收的网络指示或重配消息应用所述单连接配置。
本公开的一些实施例提供的终端能够实现图2的方法实施例中终端实现的各个过程，为避免重复，这里不再赘述，且可以降低终端通信时延。
请参见图13，图13是本公开的一些实施例提供的另一种终端的结构图，如图13所示，终端1300包括：
接收模块1301，用于接收源节点发送的切换命令，所述切换命令包括双连接配置，以及目的节点的单连接配置；
建立模块1302，用于根据所述双连接配置，与目标节点建立连接；
应用模块1303，用于应用所述目标节点的单连接配置；
断开模块1304，用于断开与所述源节点的连接。
可选的，应用模块1303用于若完成目标节点的接入，则应用所述目标节点的单连接配置；或者
应用模块1303用于根据预设条件默认应用所述目标节点的单连接配置；或者
应用模块1303用于根据接收的网络指示或重配消息应用所述目标节点的单连接配置，并将所述目标节点的单连接配置生效的指示上报网络。
本公开的一些实施例提供的终端能够实现图3的方法实施例中终端实现的各个过程，为避免重复，这里不再赘述，且可以降低终端通信时延。
请参见图14，图14是本公开的一些实施例提供的一种通信节点的结构图，该通信节点为目标节点，如图14所示，通信节点包括：
第一接收模块1401，用于接收源节点发送的切换请求；
第一发送模块1402，用于向所述源节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
建立模块1403，用于与所述终端建立连接；
第二发送模块1404，用于向所述终端发送单连接配置。
可选的，所述切换命令还包括终端能力划分信息，所述与所述终端建立连接是在所述源节点接受所述切换命令的情况进行的；
其中，若所述源节点拒绝所述切换命令，则所述目标节点接收到所述源节点发送的用于表示拒绝所述切换命令的通知消息。
可选的，如图15所示，通信设备1400还包括：
第二接收模块1405，用于接收所述源节点发送第三确认消息，其中，所述第三确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述单连接配置通过SRB1或者SRB2或者SRB3进行传输。
可选的，如图16所示，通信设备1400还包括：
第三发送模块1406，用于向所述源节点发送第二通知消息，所述第二通知消息用于通知所述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双连接资源。
可选的，如图17所示，通信设备1400还包括：
第四发送模块1407，用于向所述终端发送第二双连接配置。
可选的，如图18所示，通信设备1400还包括：
第三接收模块1408，用于接收所述终端发送的第二确认消息，所述第二确认消息包括如下至少一项：
所述单连接配置的确认信息；
小区切换流程结束的确认信息。
本公开的一些实施例提供的终端能够实现图4的方法实施例中目标节点实现的各个过程，为避免重复，这里不再赘述，且可以降低终端通信时延。
请参见图19，图19是本公开的一些实施例提供的另一种通信节点的结构图，该通信节点为源节点，如图19所示，通信设备1900包括：
第一发送模块1901，用于向目标节点发送切换请求；
第一接收模块1902，用于接收所述目标节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
第二发送模块1903，用于向终端发送所述切换命令；
断开模块1904，用于断开与所述终端的连接，其中，所述断开是在所述终端与所述目标节点建立连接后断开的。
所述切换命令还包括终端能力划分信息，所述向终端发送所述切换命令，包括：
若所述源节点接受所述切换命令，则向所述终端发送所述切换命令；
其中，若拒绝所述切换命令，则所述源节点向所述目标节点发送用于表示拒绝所述切换命令的通知消息。
可选的，如图20所示，通信设备1900还包括：
第二接收模块1905，用于接收所述终端发送的第一确认消息，其中，所述第一确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，如图21所示，通信设备1900还包括：
第三发送模块1906，用于向所述目标节点发送所述第三确认消息，其中，所述第三确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述切换命令通过SRB1或者SRB2进行传输。
可选的，如图22所示，通信设备1900还包括：
第三接收模块1907，用于接收所述终端发送的第一通知消息，所述第一通知消息用于通知所述第一双连接配置或者所述单连接配置已生效，或者用于通知释放所述源节点预留的双连接资；和/或，
第四接收模块1908，用于接收所述目标节点发送的第二通知消息，所述第二通知消息用于通知所述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双连接资源。
可选的，如图23所示，通信设备1900还包括：
释放模块1909，用于释放所述源节点预留的双连接资源。
本公开的一些实施例提供的终端能够实现图5的方法实施例中源节点实现的各个过程，为避免重复，这里不再赘述，且可以降低终端通信时延。
图24为实现本公开各个实施例的一种终端的硬件结构示意图，
该终端2400包括但不限于：射频单元2401、网络模块2402、音频输出单元2403、输入单元2404、传感器2405、显示单元2406、用户输入单元2407、接口单元2408、存储器2409、处理器2410、以及电源2411等部件。本领域 技术人员可以理解，图24中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。在本公开的一些实施例中，终端包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。
在一个实施例中，射频单元2401，用于接收源节点发送的切换命令，所述切换命令包括第一双连接配置；根据所述第一双连接配置，与目标节点建立连接；接收所述目标节点发送的单连接配置；
处理器2410，用于应用所述单连接配置；
射频单元2401还用于断开与所述源节点的连接。
可选的，所述接收源节点发送的切换命令之后，射频单元2401还用于：
向所述源节点发送第一确认消息，其中，所述第一确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述切换命令通过SRB1或者SRB2进行传输。
可选的，所述单连接配置通过SRB1或者SRB2或者SRB3进行传输。
可选的，所述应用所述单连接配置，断开与所述源节点的连接之前，射频单元2401还用于：
向所述源节点发送第一通知消息，所述第一通知消息用于通知所述第一双连接配置或者所述单连接配置已生效，或者用于通知释放所述源节点预留的双连接资源。
可选的，所述与目标节点建立连接之后，射频单元2401还用于：
接收所述目标节点发送的第二双连接配置；
根据所述第二双连接配置，执行转换承载类型、转换锚定节点和转换密钥中的至少一项。
可选的，所述接收所述目标节点发送的单连接配置之后，射频单元2401还用于：
向所述目标节点发送第二确认消息，所述第二确认消息包括如下至少一项：
所述单连接配置的确认信息；
小区切换流程结束的确认信息。
可选的，所述应用所述单连接配置，包括：
根据预设条件默认应用所述单连接配置；或者
根据接收的网络指示或重配消息应用所述单连接配置。
在另一个实施例中，射频单元2401，用于接收源节点发送的切换命令，所述切换命令包括双连接配置，以及目的节点的单连接配置；根据所述双连接配置，与目标节点建立连接；
处理器2410，用于应用所述目标节点的单连接配置；
射频单元2401还用于断开与所述源节点的连接。
可选的，所述应用所述目标节点的单连接配置，包括：
若完成目标节点的接入，则应用所述目标节点的单连接配置；或者
根据预设条件默认应用所述目标节点的单连接配置；或者
根据接收的网络指示或重配消息应用所述目标节点的单连接配置，并将所述目标节点的单连接配置生效的指示上报网络。
上述终端可以降低终端通信时延。
应理解的是，本公开的一些实施例中，射频单元2401可用于收发信息或通话过程中，信号的接收和发送，具体的，将来自基站的下行数据接收后，给处理器2410处理；另外，将上行的数据发送给基站。通常，射频单元2401包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元2401还可以通过无线通信系统与网络和其他设备通信。
终端通过网络模块2402为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元2403可以将射频单元2401或网络模块2402接收的或者在存储器2409中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元2403还可以提供与终端2400执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元2403包括扬声器、蜂鸣器以及受话器等。
输入单元2404用于接收音频或视频信号。输入单元2404可以包括图形 处理器(Graphics Processing Unit，GPU)24041和麦克风24042，图形处理器24041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元2406上。经图形处理器24041处理后的图像帧可以存储在存储器2409(或其它存储介质)中或者经由射频单元2401或网络模块2402进行发送。麦克风24042可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元2401发送到移动通信基站的格式输出。
终端2400还包括至少一种传感器2405，比如光传感器、运动传感器以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板24061的亮度，接近传感器可在终端2400移动到耳边时，关闭显示面板24061和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别终端姿态(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器2405还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元2406用于显示由用户输入的信息或提供给用户的信息。显示单元2406可包括显示面板24061，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示面板24061。
用户输入单元2407可用于接收输入的数字或字符信息，以及产生与终端的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元2407包括触控面板24071以及其他输入设备24072。触控面板24071，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板24071上或在触控面板24071附近的操作)。触控面板24071可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标， 再送给处理器2410，接收处理器2410发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板24071。除了触控面板24071，用户输入单元2407还可以包括其他输入设备24072。具体地，其他输入设备24072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板24071可覆盖在显示面板24061上，当触控面板24071检测到在其上或附近的触摸操作后，传送给处理器2410以确定触摸事件的类型，随后处理器2410根据触摸事件的类型在显示面板24061上提供相应的视觉输出。虽然在图24中，触控面板24071与显示面板24061是作为两个独立的部件来实现终端的输入和输出功能，但是在某些实施例中，可以将触控面板24071与显示面板24061集成而实现终端的输入和输出功能，具体此处不做限定。
接口单元2408为外部装置与终端2400连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输出(I/O)端口、视频I/O端口、耳机端口等等。接口单元2408可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收到的输入传输到终端2400内的一个或多个元件或者可以用于在终端2400和外部装置之间传输数据。
存储器2409可用于存储软件程序以及各种数据。存储器2409可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器2409可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器2410是终端的控制中心，利用各种接口和线路连接整个终端的各个部分，通过运行或执行存储在存储器2409内的软件程序和/或模块，以及调用存储在存储器2409内的数据，执行终端的各种功能和处理数据，从而对终端进行整体监控。处理器2410可包括一个或多个处理单元；可选的，处理 器2410可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器2410中。
终端2400还可以包括给各个部件供电的电源2411(比如电池)，可选的，电源2411可以通过电源管理系统与处理器2410逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
另外，终端2400包括一些未示出的功能模块，在此不再赘述。
可选的，本公开的一些实施例还提供一种终端，包括处理器2410，存储器2409，存储在存储器2409上并可在所述处理器2410上运行的计算机程序，该计算机程序被处理器2410执行时实现上述小区切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
参见图25，图25是本公开的一些实施例提供的另一种通信节点的结构图，该通信节点为目标节点，如图25所示，该通信节点2500包括：处理器2501、收发机2502、存储器2503和总线接口，其中：
收发机2502，用于接收源节点发送的切换请求；向所述源节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；与所述终端建立连接；向所述终端发送单连接配置。
可选的，所述切换命令还包括终端能力划分信息，所述与所述终端建立连接是在所述源节点接受所述切换命令的情况进行的；
其中，若所述源节点拒绝所述切换命令，则所述目标节点接收到所述源节点发送的用于表示拒绝所述切换命令的通知消息。
可选的，所述向所述源节点发送所述切换请求的切换响应之后，收发机2502还用于：
接收所述源节点发送第三确认消息，其中，所述第三确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述单连接配置通过SRB1或者SRB2或者SRB3进行传输。
可选的，所述向所述终端发送单连接配置之后，或者收到所述终端的所 述单连接配置生效指示之后，收发机2502还用于：
向所述源节点发送第二通知消息，所述第二通知消息用于通知所述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双连接资源。
可选的，与所述终端建立连接之后，收发机2502还用于：
向所述终端发送第二双连接配置。
可选的，所述向所述终端发送单连接配置之后，收发机2502还用于：
接收所述终端发送的第二确认消息，所述第二确认消息包括如下至少一项：
所述单连接配置的确认信息；
小区切换流程结束的确认信息。
上述目标节点可以降低终端通信时延。
其中，收发机2502，用于在处理器2501的控制下接收和发送数据，所述收发机2502包括至少两个天线端口。
在图25中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2501代表的一个或多个处理器和存储器2503代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机2502可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口2504还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器2501负责管理总线架构和通常的处理，存储器2503可以存储处理器2501在执行操作时所使用的数据。
可选的，本公开的一些实施例还提供一种网络设备，包括处理器2501，存储器2503，存储在存储器2503上并可在所述处理器2501上运行的计算机程序，该计算机程序被处理器2501执行时实现上述小区切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
参见图26，图26是本公开的一些实施例提供的另一种通信节点的结构 图，该通信节点为源节点，如图26所示，该通信节点2600包括：处理器2601、收发机2602、存储器2603和总线接口，其中：
收发机2602，用于向目标节点发送切换请求；接收所述目标节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；向终端发送所述切换命令；断开与所述终端的连接，其中，所述断开是在所述终端与所述目标节点建立连接后断开的。
可选的，所述切换命令还包括终端能力划分信息，所述向终端发送所述切换命令，包括：
若所述源节点接受所述切换命令，则向所述终端发送所述切换命令；
其中，若拒绝所述切换命令，则所述源节点向所述目标节点发送用于表示拒绝所述切换命令的通知消息。
可选的，所述向终端发送配置消息之后，收发机2602还用于：
接收所述终端发送的第一确认消息，其中，所述第一确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述接收所述终端发送的第一确认消息之后，收发机2602还用于：
向所述目标节点发送所述第三确认消息，其中，所述第三确认消息包括如下至少一项：
所述切换命令的确认信息；
所述第一双连接配置的确认信息。
可选的，所述切换命令通过SRB1或者SRB2进行传输。
可选的，所述向终端发送配置消息之后，收发机2602还用于：
接收所述终端发送的第一通知消息，所述第一通知消息用于通知所述第一双连接配置或者所述单连接配置已生效，或者用于通知释放所述源节点预留的双连接资；和/或，
接收所述目标节点发送的第二通知消息，所述第二通知消息用于通知所述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双 连接资源。
可选的，在接收到所述第一通知消息和/或所述第二通知消息之后，处理器2501还用于：
释放所述源节点预留的双连接资源。
上述源节点可以降低终端通信时延。
其中，收发机2602，用于在处理器2601的控制下接收和发送数据，所述收发机2602包括至少两个天线端口。
在图26中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2601代表的一个或多个处理器和存储器2603代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机2602可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口2604还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器2601负责管理总线架构和通常的处理，存储器2603可以存储处理器2601在执行操作时所使用的数据。
可选的，本公开的一些实施例还提供一种网络设备，包括处理器2601，存储器2603，存储在存储器2603上并可在所述处理器2601上运行的计算机程序，该计算机程序被处理器2601执行时实现上述小区切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本公开的一些实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现本公开的一些实施例提供的终端侧的小区切换方法实施例的各个过程，或者该计算机程序被处理器执行时实现本公开的一些实施例提供的目标节点侧的小区切换方法实施例的各个过程，或者该计算机程序被处理器执行时实现本公开的一些实施例提供的源节点侧的小区切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access  Memory，RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (33)

  1. 一种小区切换方法，应用于终端，包括：
    接收源节点发送的切换命令，所述切换命令包括第一双连接配置；
    根据所述第一双连接配置，与目标节点建立连接；
    接收所述目标节点发送的单连接配置；
    应用所述单连接配置；
    断开与所述源节点的连接。
  2. 如权利要求1所述的方法，其中，所述接收源节点发送的切换命令之后，所述方法还包括：
    向所述源节点发送第一确认消息，其中，所述第一确认消息包括如下至少一项：
    所述切换命令的确认信息；
    所述第一双连接配置的确认信息。
  3. 如权利要求1所述的方法，其中，所述切换命令通过信令无线承载SRB1或者SRB2进行传输。
  4. 如权利要求1所述的方法，其中，所述单连接配置通过SRB1或者SRB2或者SRB3进行传输。
  5. 如权利要求1至4中任一项所述的方法，其中，所述应用所述单连接配置，断开与所述源节点的连接之前，所述方法还包括：
    向所述源节点发送第一通知消息，所述第一通知消息用于通知所述第一双连接配置或者所述单连接配置已生效，或者用于通知释放所述源节点预留的双连接资源。
  6. 如权利要求1至4中任一项所述的方法，其中，所述与目标节点建立连接之后，所述方法还包括：
    接收所述目标节点发送的第二双连接配置；
    根据所述第二双连接配置，执行转换承载类型、转换锚定节点和转换密钥中的至少一项。
  7. 如权利要求1至4中任一项所述的方法，其中，所述接收所述目标节 点发送的单连接配置之后，所述方法还包括：
    向所述目标节点发送第二确认消息，所述第二确认消息包括如下至少一项：
    所述单连接配置的确认信息；
    小区切换流程结束的确认信息。
  8. 如权利要求1至4中任一项所述方法，所述应用所述单连接配置，包括：
    根据预设条件默认应用所述单连接配置；或者
    根据接收的网络指示或重配消息应用所述单连接配置。
  9. 一种小区切换方法，应用于终端，包括：
    接收源节点发送的切换命令，所述切换命令包括双连接配置，以及目的节点的单连接配置；
    根据所述双连接配置，与目标节点建立连接；
    应用所述目标节点的单连接配置；
    断开与所述源节点的连接。
  10. 如权利要求9所述的方法，所述应用所述目标节点的单连接配置，包括：
    若完成目标节点的接入，则应用所述目标节点的单连接配置；或者
    根据预设条件默认应用所述目标节点的单连接配置；或者
    根据接收的网络指示或重配消息应用所述目标节点的单连接配置，并将所述目标节点的单连接配置生效的指示上报网络。
  11. 一种小区切换方法，应用于目标节点，包括：
    接收源节点发送的切换请求；
    向所述源节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
    与终端建立连接；
    向所述终端发送单连接配置。
  12. 如权利要求11所述的方法，其中，所述切换命令还包括终端能力划分信息，所述与所述终端建立连接是在所述源节点接受所述切换命令的情况 进行的；
    其中，若所述源节点拒绝所述切换命令，则所述目标节点接收到所述源节点发送的用于表示拒绝所述切换命令的通知消息。
  13. 如权利要求11所述的方法，其中，所述向所述源节点发送所述切换请求的切换响应之后，所述方法还包括：
    接收所述源节点发送第三确认消息，其中，所述第三确认消息包括如下至少一项：
    所述切换命令的确认信息；
    所述第一双连接配置的确认信息。
  14. 如权利要求11所述的方法，其中，所述单连接配置通过SRB1或者SRB2或者SRB3进行传输。
  15. 如权利要求11至14中任一项所述的方法，其中，所述向所述终端发送单连接配置之后，或者收到所述终端的所述单连接配置生效指示之后，所述方法还包括：
    向所述源节点发送第二通知消息，所述第二通知消息用于通知所述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双连接资源。
  16. 如权利要求11至14中任一项所述的方法，其中，与所述终端建立连接之后，所述方法还包括：
    向所述终端发送第二双连接配置。
  17. 如权利要求11至14中任一项所述的方法，其中，所述向所述终端发送单连接配置之后，所述方法还包括：
    接收所述终端发送的第二确认消息，所述第二确认消息包括如下至少一项：
    所述单连接配置的确认信息；
    小区切换流程结束的确认信息。
  18. 一种小区切换方法，应用于源节点，包括：
    向目标节点发送切换请求；
    接收所述目标节点发送所述切换请求的切换响应，所述切换响应包括切 换命令，所述切换命令包括第一双连接配置；
    向终端发送所述切换命令；
    断开与所述终端的连接，其中，所述断开是在所述终端与所述目标节点建立连接后断开的。
  19. 如权利要求18所述的方法，其中，所述切换命令还包括终端能力划分信息，所述向终端发送所述切换命令，包括：
    若所述源节点接受所述切换命令，则向所述终端发送所述切换命令；
    其中，若拒绝所述切换命令，则所述源节点向所述目标节点发送用于表示拒绝所述切换命令的通知消息。
  20. 如权利要求18所述的方法，其中，所述向终端发送配置消息之后，所述方法还包括：
    接收所述终端发送的第一确认消息，其中，所述第一确认消息包括如下至少一项：
    所述切换命令的确认信息；
    所述第一双连接配置的确认信息。
  21. 如权利要求20所述的方法，其中，所述接收所述终端发送的第一确认消息之后，所述方法还包括：
    向所述目标节点发送第三确认消息，其中，所述第三确认消息包括如下至少一项：
    所述切换命令的确认信息；
    所述第一双连接配置的确认信息。
  22. 如权利要求18所述的方法，其中，所述切换命令通过SRB1或者SRB2进行传输。
  23. 如权利要求18至22中任一项所述的方法，其中，所述向终端发送配置消息之后，所述方法还包括：
    接收所述终端发送的第一通知消息，所述第一通知消息用于通知所述第一双连接配置或者单连接配置已生效，或者用于通知释放所述源节点预留的双连接资；和/或，
    接收所述目标节点发送的第二通知消息，所述第二通知消息用于通知所 述单连接配置已生效的通知消息，或者，用于通知释放所述源节点预留的双连接资源。
  24. 如权利要求23所述的方法，其中，在接收到所述第一通知消息和/或所述第二通知消息之后，所述方法还包括：
    释放所述源节点预留的双连接资源。
  25. 一种终端，包括：
    第一接收模块，用于接收源节点发送的切换命令，所述切换命令包括第一双连接配置；
    建立模块，用于根据所述第一双连接配置，与目标节点建立连接；
    第二接收模块，用于接收所述目标节点发送的单连接配置；
    应用模块，用于应用所述单连接配置；
    断开模块，用于断开与所述源节点的连接。
  26. 一种终端，包括：
    接收模块，用于接收源节点发送的切换命令，所述切换命令包括双连接配置，以及目的节点的单连接配置；
    建立模块，用于根据所述双连接配置，与目标节点建立连接；
    应用模块，用于应用所述目标节点的单连接配置；
    断开模块，用于断开与所述源节点的连接。
  27. 一种通信节点，所述通信节点为目标节点，包括：
    第一接收模块，用于接收源节点发送的切换请求；
    第一发送模块，用于向所述源节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
    建立模块，用于与终端建立连接；
    第二发送模块，用于向所述终端发送单连接配置。
  28. 一种通信节点，所述通信节点为源节点，包括：
    第一发送模块，用于向目标节点发送切换请求；
    第一接收模块，用于接收所述目标节点发送所述切换请求的切换响应，所述切换响应包括切换命令，所述切换命令包括第一双连接配置；
    第二发送模块，用于向终端发送所述切换命令；
    断开模块，用于断开与所述终端的连接，其中，所述断开是在所述终端与所述目标节点建立连接后断开的。
  29. 一种终端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如权利要求1至8中任一项所述的小区切换方法中的步骤。
  30. 一种终端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如权利要求9至10中任一项所述的小区切换方法中的步骤。
  31. 一种通信节点，所述通信节点为目标节点，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如权利要求11至17中任一项所述的小区切换方法中的步骤。
  32. 一种通信节点，所述通信节点为源节点，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如权利要求18至24中任一项所述的小区切换方法中的步骤。
  33. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至8中任一项所述的小区切换方法中的步骤，或者，所述计算机程序被处理器执行时实现如权利要求9至10中任一项所述的小区切换方法中的步骤，或者，所述计算机程序被处理器执行时实现如权利要求11至17中任一项所述的小区切换方法中的步骤，或者，所述计算机程序被处理器执行时实现如权利要求18至24中任一项所述的小区切换方法中的步骤。
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