WO2021213213A1 - 切换指示方法、终端及mn - Google Patents

切换指示方法、终端及mn Download PDF

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Publication number
WO2021213213A1
WO2021213213A1 PCT/CN2021/086855 CN2021086855W WO2021213213A1 WO 2021213213 A1 WO2021213213 A1 WO 2021213213A1 CN 2021086855 W CN2021086855 W CN 2021086855W WO 2021213213 A1 WO2021213213 A1 WO 2021213213A1
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WO
WIPO (PCT)
Prior art keywords
cell
terminal
handover
mcg
scg
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PCT/CN2021/086855
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English (en)
French (fr)
Inventor
金巴·迪·阿达姆布巴卡
杨晓东
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维沃移动通信有限公司
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Publication of WO2021213213A1 publication Critical patent/WO2021213213A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure

Definitions

  • the present invention relates to the field of communication technology, and in particular to a handover indication method, terminal and MN.
  • Multi-connection in a communication system means that at least two nodes provide services for the same terminal, that is, the terminal can be connected to multiple nodes at the same time, and multiple nodes provide data receiving and sending services for the terminal at the same time.
  • the multi-connected service nodes one is a master node (Master Node, MN), and the others are secondary nodes (Secondary Node, SN), and in a multi-connected system, it includes a master cell group (Master Cell Group, MCG) and a secondary cell Group (Secondary Cell Group, SCG).
  • the terminal can initiate a fast MCG failure recovery.
  • MCG link failure MCG link failure
  • the fast MCG failure recovery process means that when MCG link failure occurs, the terminal reports master node failure information (MN failure information) on the SN, and the reported information can reach the MN, and the reported information usually includes MCG-related measurement results.
  • MN failure information master node failure information
  • the MN can select other MCG cells and reconfigure the terminal to restore the MCG connection in the new MCG cell, that is, handover (HO) the terminal to the new MCG cell.
  • the reported MN failure information may not necessarily have a valid MCG measurement result due to issues such as MCG signal quality, so it may cause the fast MCG failure recovery process to fail.
  • the embodiment of the present invention provides a handover instruction method, terminal and MN to solve the problem of poor handover effect of the existing handover instruction method.
  • the present invention is implemented as follows:
  • an embodiment of the present invention provides a handover instruction method, which is applied to a terminal, and the terminal establishes a communication connection with at least two nodes, and the at least two nodes include a primary node MN and a secondary node SN.
  • Methods include:
  • the MN failure information includes measurement information of at least one cell, and the at least one cell includes cells other than the first primary cell group MCG corresponding to the MN.
  • an embodiment of the present invention provides a handover instruction method, which is applied to a master node MN, where the MN establishes a communication connection with a terminal, and the terminal also establishes a communication connection with a secondary node SN.
  • the method includes:
  • the MN failure information includes measurement information of at least one cell, and the at least one cell includes cells other than the first MCG corresponding to the MN;
  • the terminal is handed over to the target cell of the at least one cell.
  • an embodiment of the present invention provides a terminal, the terminal establishes a communication connection with at least two nodes, the at least two nodes include a primary node MN and a secondary node SN, and the terminal includes:
  • a sending module configured to send MN failure information to the MN through the SN when the terminal fails to connect to the MN;
  • the MN failure information includes measurement information of at least one cell, and the at least one cell includes cells other than the first primary cell group MCG corresponding to the MN.
  • an embodiment of the present invention provides a master node MN.
  • the MN establishes a communication connection with a terminal, and the terminal also establishes a communication connection with a secondary node SN.
  • the MN includes:
  • the receiving module is configured to receive MN failure information sent by the terminal through the SN, where the MN failure information includes measurement information of at least one cell, and the at least one cell includes the first MCG other than the first MCG corresponding to the MN ⁇ ;
  • the handover module is configured to handover the terminal to the target cell of the at least one cell based on the MN failure information.
  • an embodiment of the present invention provides a terminal, including a processor, a memory, and a computer program stored on the memory and running on the processor, and the computer program is implemented when the processor is executed The steps in the handover indication method described in the first aspect above.
  • an embodiment of the present invention provides a master node MN, including a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When realizing the steps in the handover instruction method described in the second aspect.
  • an embodiment of the present invention provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the switching instruction method described in the first aspect is implemented Or, when the computer program is executed by a processor, the steps in the switching instruction method described in the second aspect are implemented.
  • an embodiment of the present invention provides a computer software product, the computer software product is stored in a nonvolatile storage medium, and the software product is configured to be executed by at least one processor to implement the above-mentioned first aspect The steps in the handover instruction method; or, the steps in the handover instruction method described in the second aspect.
  • an embodiment of the present invention provides a terminal configured to execute the handover instruction method described in the first aspect.
  • an embodiment of the present invention provides a master node MN, where the MN is configured to execute the handover instruction method described in the second aspect.
  • the terminal when the terminal fails to connect to the MN, it sends MN failure information to the MN through the SN; wherein the MN failure information includes measurement information of at least one cell, and the at least one cell includes A cell outside the MCG of the first primary cell group corresponding to the MN.
  • the MN failure information reported by the terminal includes measurement information of cells other than the first primary cell group MCG corresponding to the MN, it is possible to avoid the failure of handover connection caused by only including the measurement information of the MCG cell. Problem, and then improve the switching effect.
  • Figure 1 is a structural diagram of a network system applicable to an embodiment of the present invention
  • Figure 2 is a flowchart of a handover indication method provided by an embodiment of the present invention.
  • FIG. 3 is a flowchart of another handover indication method provided by an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a terminal provided by an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an MN according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of another terminal provided by an embodiment of the present invention.
  • Fig. 7 is a schematic structural diagram of another MN provided by an embodiment of the present invention.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • the uplink resource determination method, indication method, terminal, and network device provided in the embodiments of the present invention can be applied to a wireless communication system.
  • the wireless communication system can be a New Radio (NR) system, or other systems, such as: Evolved Long Term Evolution (eLTE) system or Long Term Evolution (LTE) system, or subsequent evolution Communication system, etc. Further, it can be applied to the unlicensed band (Unlicensed Band) in the above-mentioned wireless communication system.
  • NR New Radio
  • eLTE Evolved Long Term Evolution
  • LTE Long Term Evolution
  • Dual connectivity is a technology introduced in LTE and can also be used in NR. Dual connectivity means that a user terminal (User Equipment, UE) can be connected to two nodes at the same time, and the two nodes provide data receiving and sending services for the UE at the same time. Since the UE can use the radio resources of two nodes at the same time, the service data transmission rate of the UE is doubled.
  • UE User Equipment
  • the serving nodes of the dual-connected UE may belong to the same radio access technology (Radio Access Technology, RAT), for example, two LTE eNBs; or they may belong to different RATs, for example, one LTE eNB and one NR gNB.
  • RAT Radio Access Technology
  • the present invention can be applied to any combination of dual-connection nodes, and the type of dual-connection nodes is not limited.
  • the serving nodes of the dual-connected UE there is one master node (MN, Master Node) and one secondary node (SN, Secondary Node), where each node can support Carrier Aggregation (CA).
  • the network will configure two special cells for dual-connected UEs, that is, configure one serving cell of the MN as the UE's primary cell (Primary Cell, PCell), and configure one serving cell of the SN as the UE's primary and secondary cell (Primary Secondary Cell). Cell, PScell).
  • Other cells served by the MN and SN for the UE are the secondary cells (Secondary Cell, Scell) of the UE.
  • Multi-connection means that more than two nodes provide services for the same UE.
  • the present invention is also applicable to multi-connection, and the type of multi-connection base station is not limited.
  • one of the serving nodes of the multi-connected UE is MN, and the others are auxiliary nodes.
  • Fig. 1 is a structural diagram of a network system applicable to an embodiment of the present invention. As shown in Fig. 1, it includes a terminal 11, MN12, and SN 13. UE) or other terminal side devices, such as: mobile phones, tablet computers (Tablet Personal Computer), laptop computers (Laptop Computer), personal digital assistants (PDA), mobile Internet devices (Mobile Internet Device, MID) , Terminal-side devices such as wearable devices (Wearable Devices) or robots, it should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present invention.
  • UE or other terminal side devices, such as: mobile phones, tablet computers (Tablet Personal Computer), laptop computers (Laptop Computer), personal digital assistants (PDA), mobile Internet devices (Mobile Internet Device, MID) , Terminal-side devices such as wearable devices (Wearable Devices) or robots, it should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present invention.
  • SN13 above MN12 and a base station can be, for example: macro base stations, LTE eNB, the fifth generation (5 th Generation, 5G) NR NB, gNB like; and SN13 above MN12 station may be as low power node (Low Power Node, LPN) pico (pico), femto (femto) and other small stations, or access point (Access Point, AP); the base station can also be a central unit (Central Unit, CU) and multiple management and control A network node composed of Transmission Reception Point (TRP).
  • LPN Low Power Node
  • PPN low power node
  • pico pico
  • femto femto
  • AP access point
  • the base station can also be a central unit (Central Unit, CU) and multiple management and control
  • TRP Transmission Reception Point
  • the foregoing network system may be a 5G communication system or a Long Term Evolution (
  • Figure 2 is a flowchart of a handover indication method provided by an embodiment of the present invention, which is applied to a terminal, and the terminal establishes a communication connection with at least two nodes, and the at least two nodes include the master node MN.
  • the secondary node SN as shown in Fig. 2, the method includes the following steps:
  • Step 201 When the terminal fails to connect to the MN, send MN failure information to the MN through the SN;
  • the MN failure information includes measurement information of at least one cell, and the at least one cell includes cells other than the first primary cell group MCG corresponding to the MN.
  • the terminal establishes a communication connection with at least two nodes, and the at least two nodes include a primary node MN and a secondary node SN, that is, the terminal is in a Multi-RAT Dual Connectivity (Multi-RAT Dual Connectivity).
  • Multi-RAT Dual Connectivity Multi-RAT Dual Connectivity
  • MR-DC MR-DC
  • the MR-DC may include Evolved Universal Terrestrial Radio Access (E-UTRA) as MCG
  • NR is SCG dual connectivity (E-UTRA).
  • NR dual connectivity with MCG using E-UTRA and SCG using NR, EN-DC Next Generation Radio Access Network (NG-RAN), E-UTRA-NR dual connectivity (NG-RAN E-UTRA) -NR Dual Connectivity, NGEN-DC), NR-NR Dual Connectivity (NR-NR Dual Connectivity, NR-DC) and NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity, EN-DC), etc.
  • NG-RAN Next Generation Radio Access Network
  • NG-RAN E-UTRA-NR dual connectivity NG-RAN E-UTRA
  • NGEN-DC Next Generation Radio Access Network
  • NR-NR Dual Connectivity NR-NR Dual Connectivity, NR-DC
  • NR-E-UTRA Dual Connectivity, EN-DC etc.
  • the embodiment of the present invention may not specifically limit the MR-DC mode.
  • connection failure of the terminal in the MN may be that the terminal fails to connect to the cell in the MN, that is, the terminal has MN failure at the MN node.
  • connection failure may include any of the following:
  • Signaling Radio Bearer Signaling Radio Bearer (Signalling Radio Bearer, SRB) integrity protection failure (Integrity Check Failure);
  • Radio Resource Control Radio Resource Control
  • RRC Radio Resource Control
  • Reconfiguration Failure Reconfiguration Failure
  • RLF Radio Link Failure
  • the terminal needs to report MN failure information to its service node, that is, report MN failure information, to initiate a fast MCG failure recovery request (fast MCG failure recovery).
  • the connection fails. Therefore, to ensure that the MN failure information can be communicated to the MN, the terminal may report the MN failure information to the SN, and the SN forwards the MN failure information to the MN, where: Data can be transmitted between the MN and the SN through a signaling interface.
  • the measurement information of at least one cell may be carried in the MN failure information, And the at least one cell includes cells other than the first primary cell group MCG corresponding to the MN, so as to avoid the terminal recovering when it only carries the measurement information of the MCG cell and the carried MCG cell measurement information is invalid Connection failed.
  • the terminal may measure information of different cells according to frequency points, and then carry the measured cell information in the MN failure information for reporting.
  • the measurement information may include related information such as the identifier (ID) of the cell, signal quality, network type, frequency point, and so on.
  • the MN can receive the MN failure information reported by the terminal and forwarded by the SN, and can switch the connection of the terminal based on the MN failure information. Specifically, it can be based on the MN failure information.
  • the measurement information of at least one cell carried in the information determines the target cell to be handed over, and the terminal is handed over to the target cell, that is, the connection between the terminal and the target cell is established.
  • the target cell may be one of the at least one cell, and may be a cell whose measurement information meets preset requirements in the at least one cell, such as a cell with better signal quality or the best signal quality, to ensure all After the terminal switches the connection, it can have a relatively stable network connection and better communication quality.
  • the at least one cell includes at least one of the following:
  • a cell other than the first MCG In the radio access technology RAT of the first MCG, a cell other than the first MCG;
  • a cell other than the first SCG In the RAT of the first SCG, a cell other than the first SCG;
  • the cell in the first SCG corresponding to the above SN is a cell in the secondary cell group covered by the SN, and may specifically include one or more cells in the first SCG.
  • a cell other than the first MCG may refer to a cell that is not in the MCG among the network types accessed by the first MCG, that is, the network type is different from that of the first MCG.
  • Cells with the same MCG but non-MCG For example, if the network type accessed by the first MCG is LTE, the cell other than MCG may refer to the cell whose network access type is LTE and does not belong to the MCG. Community.
  • a cell other than the first SCG may refer to a cell that is not in the SCG among the network types accessed by the first SCG, that is, the network type is different from that of the first SCG. Cells with the same SCG but non-SCG. For example, if the network type accessed by the first SCG is NR, then the cell other than SCG may refer to a cell whose network access type is NR and does not belong to the SCG. Community.
  • the above-mentioned cells of other RATs other than the RAT of the first MCG or the first SCG may be a network access type other than the network type accessed by the current MCG or other than the network type accessed by the current SCG
  • the cell of the other RAT may be another cell such as NR, that is, it may be a cell covered by a node with a network access type of NR
  • the cell of the other RAT may be another cell such as LTE network access type, that is, it may be a cell covered by a node whose network access type is LTE.
  • the measurement information of the at least one cell may include cell measurement information in the current SCG, non-MCG cell measurement information, non-SCG cell measurement information, and cells of other RATs other than the current MCG RAT or SCG RAT One or more of the measurement information.
  • the at least one cell further includes a cell in the first MCG.
  • the at least one cell may not only include one or more of the above-mentioned cells, but also a cell in the first MCG, that is, the current MCG cell.
  • the MN may The multiple cell measurement information carried in the MN failure information selects a cell with the best possible signal quality for the terminal to perform handover.
  • the terminal when the terminal fails to connect to the MN, it sends MN failure information to the MN through the SN; wherein the MN failure information includes measurement information of at least one cell, and the at least one cell
  • the cells include cells other than the first primary cell group MCG corresponding to the MN.
  • FIG. 3 is a flowchart of another handover indication method provided by an embodiment of the present invention, which is applied to the master node MN, and the MN establishes a communication connection with the terminal, and the terminal also establishes a communication connection with the secondary node SN.
  • the communication connection as shown in Fig. 3, the method includes the following steps:
  • Step 301 Receive MN failure information sent by the terminal through the SN, where the MN failure information includes measurement information of at least one cell, and the at least one cell includes cells other than the first MCG corresponding to the MN .
  • Step 302 Based on the MN failure information, handover the terminal to a target cell in the at least one cell.
  • this embodiment is used as an implementation on the MN side corresponding to the embodiment shown in FIG. This embodiment will not be repeated. In this embodiment, the switching effect can also be improved.
  • connection failure may include any of the following:
  • the at least one cell includes at least one of the following:
  • a cell other than the first MCG In the RAT of the first MCG, a cell other than the first MCG;
  • a cell other than the first SCG In the RAT of the first SCG, a cell other than the first SCG;
  • the at least one cell further includes a cell in the first MCG.
  • the step 302 includes:
  • a target cell may be determined as the cell to be handed over based on the measurement information of the at least one cell carried in the MN failure information, where the target cell may be the measurement information conforming to the preset
  • the required cell such as a cell with better signal quality or the best signal quality, can ensure that the terminal can have a relatively stable network connection and a better communication quality after the connection is switched.
  • a handover request ie, a HO request
  • a handover request may be sent to the target node corresponding to the target cell, so that the target node can hand over the terminal to the terminal after receiving the handover request.
  • a target cell where the target node is a node covering a cell including the target cell. It should be noted that when the target cell is a cell covered by the MN, the target node is the MN, and when the target cell is a cell covered by the SN, the target node is For the SN, when the target cell is a cell covered by a node other than the MN and the SN, the target node is a new node other than the MN and the SN.
  • the sending a handover request to the target node corresponding to the target cell may be sending a handover request to an interface corresponding to the target cell, where:
  • the different cells covered by the MN have interfaces capable of communicating with each other.
  • the step of sending a handover request to the target node may not be performed, but the terminal may be directly handed over to the target cell.
  • the handover request may carry a handover reason, and the handover reason indicates that the terminal fails to connect to the MN.
  • the handover reason can be carried in the handover request to The reason for instructing the target node to initiate the handover request is that the terminal fails to connect to the MN, that is, the handover request is initiated on the basis of the fast MCG failure recovery initiated by the terminal.
  • the target node after receiving the handover request, the target node can process the request as the highest priority level, respond immediately, and establish a connection between the terminal and the target cell without delay and response contention.
  • the handover of the terminal to the target cell of the at least one cell includes any one of the following:
  • the behavior of the MN to handover the terminal to the target cell may include the following multiple different handover modes:
  • the terminal may be handed over from the first cell of the MN to the second cell of the MN, that is, the MN is still retained as the master node of the terminal, but the terminal is in The cell of the MN connected before the MN connection failure occurs, that is, the first cell, and is switched to another cell of the MN, that is, the second cell, so as to restore the connection between the terminal and the MN.
  • the handover of the terminal from the first cell of the MN to the second cell of the MN may include any of the following:
  • the terminal is handed over from the first cell of the MN to the second cell of the MN, and the terminal is handed over from the third cell of the SN to the fourth cell of the SN.
  • One is to retain the connection between the terminal and the SN, that is, not to switch the cell that the terminal is connected to in the SN, nor to release the connection between the terminal and the SN;
  • the second is to handover the terminal from the third cell of the SN to the fourth cell of the SN, that is, the SN is still reserved as the secondary node of the terminal, but the terminal is switched before the MN connection failure occurs.
  • the connected cell of the SN is the third cell, and handover to another cell in the SN, the fourth cell, where the fourth cell may have better signal quality than the third cell To switch the terminal to an SN cell with better signal quality.
  • the terminal may be handed over from the first cell of the MN to a cell in a second MCG, where the second MCG is a newly added primary cell group, that is, a new node can be added Replace the current MN as the new master node, so that the cell covered by the newly added master node is used as the new primary cell group, that is, the second MCG, and the terminal connected to the MN before the MN connection failure
  • the first cell in the MN is switched to a cell in the newly added primary cell group to establish a connection between the terminal and the newly added primary node.
  • the handover of the terminal from the first cell of the MN to the cell in the second MCG may include any one of the following:
  • the terminal is handed over from the first cell of the MN to the cell in the second MCG, and the terminal is handed over from the third cell of the SN to the cell in the second SCG, wherein the first 2.
  • SCG is the newly added secondary cell group;
  • the terminal is handed over from the first cell of the MN to the cell in the second MCG, wherein the terminal releases the connection with the SN.
  • One is to retain the connection between the terminal and the SN, that is, not to switch the cell that the terminal is connected to in the SN, nor to release the connection between the terminal and the SN;
  • the second is to switch the terminal from the third cell of the SN to the cell in the second SCG, that is, a new node can be added to replace the current SN as a new secondary node, so that the newly added secondary node can be covered As the new secondary cell group, that is, the second SCG, and switch the third cell in the SN that the terminal was connected to before the MN connection failure occurred to a cell in the newly added secondary cell group, To establish a connection between the terminal and the newly added secondary node;
  • the third is to release the connection between the terminal and the SN, that is, release the connection between the terminal and the cell in the SN.
  • the connection between the terminal and the SN is released.
  • the terminal can be switched from the original dual-connection or multi-connection mode to the single-connection mode.
  • the new node can be configured as a secondary node of the terminal, so as to restore the terminal to dual Connection or multi-connection mode.
  • the terminal may be reconfigured on the MN and/or the SN to configure the terminal to the target cell, that is, the terminal may be configured on the MN or the SN.
  • the resource reconfiguration on the terminal is performed on the above, and the resource reconfiguration on the terminal may also be performed on the MN and the SN, and new network configuration resources are re-issued to the terminal to re-establish the terminal and For the connection of the MN and/or the SN, the cell to which the terminal is connected after re-establishing the connection with the MN and/or the SN is the target cell.
  • the performing resource reconfiguration on the MN and/or the SN may include any one of the following:
  • connection between the terminal and the SN is reconfigured, wherein the terminal releases the connection with the MN.
  • the resource reconfiguration on the MN and/or the SN may specifically have the following three different reconfiguration behaviors:
  • One may be to perform resource reconfiguration on the terminal only on the MN, that is, re-deliver new network configuration resources to the terminal through the MN to re-establish the connection between the terminal and the MN, And the connection between the terminal and the MN can be reserved, and the connection between the terminal and the SN can be reserved, that is, continue to keep the MN as the primary node of the terminal and the SN as the secondary node of the terminal The configuration remains unchanged.
  • the second may be to perform resource reconfiguration on the MN and/or the SN, that is, re-deliver new network configuration resources to the terminal through at least one of the MN and the SN , To re-establish the connection relationship between the terminal and the MN and the SN, and exchange the relationship between the MN and the SN, that is, configure the original primary node and the MN as a new secondary node, and set The SN of the original secondary node is configured as the new primary node. For example, when the signal quality of the cell covered by the SN is better than the signal quality of the cell covered by the MN, the original MN may be reconfigured as a new SN, and the original SN may be reconfigured as a new MN.
  • the third can be to reconfigure the connection between the terminal and the SN and release the connection between the terminal and the MN, that is, to reconfigure the terminal to only connect to the cell in the SN, and release the terminal
  • the connection with the cell in the MN is to release the dual-connection or multi-connection configuration, and the terminal is switched from the original dual-connection or multi-connection mode to the single-connection mode.
  • the connection between the terminal and the MN may be released when there is no cell whose signal quality meets a preset requirement in the MCG cell corresponding to the MN.
  • the new node may be configured as the primary node or secondary node of the terminal, and the terminal will be restored. Terminal to dual connection or multiple connection mode.
  • the MN failure information sent by the terminal through the SN is received, where the MN failure information includes measurement information of at least one cell, and the at least one cell includes the first MCG other than the first MCG corresponding to the MN.
  • the cell; based on the MN failure information, the terminal is handed over to the target cell in the at least one cell.
  • the MN failure information reported by the terminal includes measurement information of cells other than the first primary cell group MCG corresponding to the MN, it is possible to avoid the failure of handover connection caused by only including the measurement information of the MCG cell. Problem, and then improve the switching effect.
  • FIG. 4 is a schematic structural diagram of a terminal provided by an embodiment of the present invention.
  • the terminal establishes a communication connection with at least two nodes, and the at least two nodes include a primary node MN and a secondary node SN, such as As shown in FIG. 4, the terminal 400 includes:
  • the sending module 401 is configured to send MN failure information to the MN through the SN when the terminal 400 fails to connect to the MN;
  • the MN failure information includes measurement information of at least one cell, and the at least one cell includes cells other than the first primary cell group MCG corresponding to the MN.
  • the at least one cell includes at least one of the following:
  • a cell other than the first MCG In the radio access technology RAT of the first MCG, a cell other than the first MCG;
  • a cell other than the first SCG In the RAT of the first SCG, a cell other than the first SCG;
  • the at least one cell further includes a cell in the first MCG.
  • connection failure includes any of the following:
  • the terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the method embodiment of FIG.
  • FIG. 5 is a structural diagram of a primary node MN provided by an embodiment of the present invention.
  • the MN establishes a communication connection with a terminal, and the terminal also establishes a communication connection with a secondary node SN, as shown in Figure 5.
  • MN500 includes:
  • the receiving module 501 is configured to receive MN failure information sent by the terminal through the SN, where the MN failure information includes measurement information of at least one cell, and the at least one cell includes the first MCG corresponding to the MN.
  • the handover module 502 is configured to handover the terminal to a target cell in the at least one cell based on the MN failure information.
  • the at least one cell includes at least one of the following:
  • a cell other than the first MCG In the RAT of the first MCG, a cell other than the first MCG;
  • a cell other than the first SCG In the RAT of the first SCG, a cell other than the first SCG;
  • the at least one cell further includes a cell in the first MCG.
  • the switching module 502 includes:
  • a determining unit configured to determine the target cell to be handed over based on the measurement information of at least one cell in the MN failure information
  • the sending unit is configured to send a handover request to a target node corresponding to the target cell, where the handover request is used to request the target node to switch the terminal to the target cell.
  • the handover request carries a handover reason, and the handover reason indicates that the terminal fails to connect to the MN.
  • the switching module 502 includes any one of the following:
  • a first handover unit configured to handover the terminal from the first cell of the MN to the second cell of the MN;
  • a second handover unit configured to handover the terminal from the first cell of the MN to a cell in a second MCG, where the second MCG is a newly added primary cell group;
  • the reconfiguration unit is configured to perform resource reconfiguration on the terminal on the MN and/or the SN, so as to configure the terminal to the target cell.
  • the first switching unit includes any one of the following:
  • a first handover subunit configured to handover the terminal from the first cell of the MN to the second cell of the MN, wherein the terminal reserves the connection with the SN;
  • the second handover subunit is used to handover the terminal from the first cell of the MN to the second cell of the MN, and handover the terminal from the third cell of the SN to the second cell of the SN Four districts.
  • the second switching unit includes any one of the following:
  • a third handover subunit configured to handover the terminal from the first cell of the MN to the cell in the second MCG, wherein the terminal reserves the connection with the SN;
  • the fourth handover subunit is used to switch the terminal from the first cell of the MN to the cell in the second MCG, and to switch the terminal from the third cell of the SN to the second SCG , Where the second SCG is a newly added secondary cell group;
  • the fifth handover subunit is used to handover the terminal from the first cell of the MN to the cell in the second MCG, wherein the terminal releases the connection with the SN.
  • the reconfiguration unit includes any one of the following:
  • the first reconfiguration subunit is configured to perform resource reconfiguration on the terminal on the MN, wherein the terminal reserves the connection with the MN and reserves the connection with the SN;
  • the second reconfiguration subunit is configured to perform resource reconfiguration on the MN and/or the SN, configure the MN as a secondary node of the terminal, and configure the SN as the terminal The master node of the terminal;
  • the third reconfiguration subunit is used to reconfigure the connection between the terminal and the SN, wherein the terminal releases the connection with the MN.
  • the MN provided in the embodiment of the present invention can implement each process implemented by the MN in the method embodiment of FIG.
  • Fig. 6 is a schematic diagram of the hardware structure of a terminal for implementing various embodiments of the present invention.
  • the terminal establishes a communication connection with at least two nodes.
  • the at least two nodes include a primary node MN and a secondary node SN.
  • the terminal 600 includes But not limited to: radio frequency unit 601, network module 602, audio output unit 603, input unit 604, sensor 605, display unit 606, user input unit 607, interface unit 608, memory 609, processor 610, power supply 611 and other components.
  • the terminal structure shown in FIG. 6 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components.
  • terminals include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, robots, wearable devices, and pedometers.
  • the radio frequency unit 601 is configured to send MN failure information to the MN through the SN when the terminal fails to connect to the MN;
  • the MN failure information includes measurement information of at least one cell, and the at least one cell includes cells other than the first primary cell group MCG corresponding to the MN.
  • the at least one cell includes at least one of the following:
  • a cell other than the first MCG In the radio access technology RAT of the first MCG, a cell other than the first MCG;
  • a cell other than the first SCG In the RAT of the first SCG, a cell other than the first SCG;
  • the at least one cell further includes a cell in the first MCG.
  • connection failure includes any of the following:
  • the terminal 600 can implement various processes implemented by the terminal in the foregoing embodiments, and to avoid repetition, details are not described herein again.
  • the terminal 600 of the embodiment of the present invention can improve the handover effect.
  • the radio frequency unit 601 can be used to receive and send signals during information transmission or communication. Specifically, the downlink data from the base station is received and sent to the processor 610 for processing; in addition, Uplink data is sent to the base station.
  • the radio frequency unit 601 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 601 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 602, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 603 can convert the audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into audio signals and output them as sounds. Moreover, the audio output unit 603 may also provide audio output related to a specific function performed by the terminal 600 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 604 is used to receive audio or video signals.
  • the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042, and the graphics processor 6041 is used to capture images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
  • the processed image frame may be displayed on the display unit 606.
  • the image frame processed by the graphics processor 6041 may be stored in the memory 609 (or other storage medium) or sent via the radio frequency unit 601 or the network module 602.
  • the microphone 6042 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 a mobile communication base station via the radio frequency unit 601 for output in the case of a telephone call mode.
  • the terminal 600 also includes at least one sensor 605, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 6061 according to the brightness of the ambient light.
  • the proximity sensor can close the display panel 6061 and/or when the terminal 600 is moved to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal gestures (such as horizontal and vertical screen switching, related games, Magnetometer posture calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 605 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 606 is used to display information input by the user or information provided to the user.
  • the display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 607 may be used to receive inputted number or character information, and generate key signal input related to user settings and function control of the terminal.
  • the user input unit 607 includes a touch panel 6071 and other input devices 6072.
  • the touch panel 6071 also called a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 6071 or near the touch panel 6071. operate).
  • the touch panel 6071 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 610, the command sent by the processor 610 is received and executed.
  • the touch panel 6071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 607 may also include other input devices 6072.
  • other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 6071 can cover the display panel 6061.
  • the touch panel 6071 detects a touch operation on or near it, it is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 determines the type of touch event according to the touch.
  • the type of event provides corresponding visual output on the display panel 6061.
  • the touch panel 6071 and the display panel 6061 are used as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 6071 and the display panel 6061 can be integrated. Realize the input and output functions of the terminal, the specifics are not limited here.
  • the interface unit 608 is an interface for connecting an external device with the terminal 600.
  • the external device may include a wired or wireless headset port, an external power source (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 (Input/Output, I/O) port, video I/O port, headphone port, etc.
  • the interface unit 608 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 600 or may be used to communicate between the terminal 600 and the external device. Transfer data between.
  • the memory 609 can be used to store software programs and various data.
  • the memory 609 may mainly include a storage program area and a storage data area.
  • the storage program area may store an operating system, an application program 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 book, etc.), etc.
  • the memory 609 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 610 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal. Various functions of the terminal and processing data, so as to monitor the terminal as a whole.
  • the processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modem
  • the processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 610.
  • the terminal 600 may also include a power supply 611 (such as a battery) for supplying power to various components.
  • a power supply 611 such as a battery
  • the power supply 611 may be logically connected to the processor 610 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. Function.
  • the terminal 600 includes some functional modules not shown, which will not be repeated here.
  • the embodiment of the present invention also provides a terminal, including a processor 610, a memory 609, and a computer program stored in the memory 609 and running on the processor 610.
  • the computer program is executed when the processor 610 is executed.
  • FIG. 7 is a structural diagram of another master node MN provided by an embodiment of the present invention.
  • the MN establishes a communication connection with a terminal, and the terminal also establishes a communication connection with a secondary node SN, as shown in FIG.
  • the MN700 includes: a processor 701, a transceiver 702, a memory 703, and a bus interface.
  • the transceiver 702 is configured to receive MN failure information sent by the terminal through the SN, where the MN failure information includes measurement information of at least one cell, and the at least one cell includes the first cell corresponding to the MN. A cell outside the MCG;
  • the MN700 further includes: a computer program stored in the memory 703 and capable of running on the processor 701.
  • a computer program stored in the memory 703 and capable of running on the processor 701.
  • the terminal is handed over to the target cell of the at least one cell.
  • the at least one cell includes at least one of the following:
  • a cell other than the first MCG In the RAT of the first MCG, a cell other than the first MCG;
  • a cell other than the first SCG In the RAT of the first SCG, a cell other than the first SCG;
  • the at least one cell further includes a cell in the first MCG.
  • the control transceiver 702 sends a handover request to a target node corresponding to the target cell, where the handover request is used to request the target node to switch the terminal to the target cell.
  • the handover request carries a handover reason, and the handover reason indicates that the terminal fails to connect to the MN.
  • the terminal is handed over from the first cell of the MN to the second cell of the MN, and the terminal is handed over from the third cell of the SN to the fourth cell of the SN.
  • the terminal is handed over from the first cell of the MN to the cell in the second MCG, and the terminal is handed over from the third cell of the SN to the cell in the second SCG, wherein the first 2.
  • SCG is the newly added secondary cell group;
  • the terminal is handed over from the first cell of the MN to the cell in the second MCG, wherein the terminal releases the connection with the SN.
  • connection between the terminal and the SN is reconfigured, wherein the terminal releases the connection with the MN.
  • the above-mentioned MN700 can improve the handover effect.
  • the transceiver 702 is configured to receive and send data under the control of the processor 701, and the transceiver 702 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 701 and various circuits of the memory represented by the memory 703 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the transceiver 702 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the user interface 704 may also be an interface capable of connecting externally and internally with the required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 can store data used by the processor 701 when performing operations.
  • the embodiment of the present invention also provides an MN, including a processor 701, a memory 703, a computer program stored in the memory 703 and running on the processor 701, and the computer program is implemented when the processor 701 is executed.
  • MN including a processor 701, a memory 703, a computer program stored in the memory 703 and running on the processor 701, and the computer program is implemented when the processor 701 is executed.
  • the embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the switching instruction method embodiment shown in FIG. 2 is implemented, or, When the computer program is executed by the processor, each process of the switching instruction method embodiment shown in FIG. 3 is realized, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated 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.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present invention.
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.
  • the program can be stored in a computer readable storage medium. When executed, it may include the procedures of the above-mentioned method embodiments.
  • the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
  • modules, units, and sub-units can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), programmable logic devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, used to execute the present disclosure Other electronic units or a combination of the functions described above.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processor
  • DSP Device Digital Signal Processing Device
  • DSPD Digital Signal Processing Device
  • PLD programmable logic devices
  • Field-Programmable Gate Array Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present disclosure can be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.

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Abstract

本发明提供一种切换指示方法、终端及主节点MN，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括MN和辅节点SN，该方法包括：在所述终端在所述MN发生连接失败的情况下，通过所述SN向所述MN发送MN失败信息；其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。

Description

切换指示方法、终端及MN
相关申请的交叉引用
本申请主张在2020年4月20日在中国提交的中国专利申请号No.202010313716.2的优先权，其全部内容通过引用包含于此。
技术领域
本发明涉及通信技术领域，尤其涉及一种切换指示方法、终端及MN。
背景技术
通信系统中的多连接是指至少两个节点为同一个终端提供服务，即终端可以同时连接到多个节点，由多个节点同时为终端提供数据收发服务。多连接的服务节点中有一个为主节点(Master Node，MN)，其他为辅节点(Secondary Node，SN)，且在多连接系统中，包括主小区组(Master Cell Group，MCG)和辅小区组(Secondary Cell Group，SCG)。
在多连接场景下，当MCG下行信道条件不好发生了MCG链路失败(MCG link failure)，即终端在MN节点发生链路失败时，终端可发起快速恢复连接(fast MCG failure recovery)。其中，fast MCG failure recovery过程是指，当发生MCG link failure，终端在SN上报主节点失败信息(MN failure information)，上报信息可达到MN，且上报信息中通常是包括MCG相关测量结果。根据终端上报的信息，MN可选择其他MCG小区并重配终端在新的MCG小区恢复MCG连接，即将终端切换(Hand over，HO)到新的MCG小区。但是，上报的MN failure information中可能因MCG信号质量等问题而不一定能拥有有效的MCG测量结果，所以有可能导致fast MCG failure recovery过程失败。
可见，现有切换指示方法的切换效果较差。
发明内容
本发明实施例提供一种切换指示方法、终端及MN，以解决现有切换指 示方法的切换效果较差的问题。
为解决上述技术问题，本发明是这样实现的：
第一方面，本发明实施例提供了一种切换指示方法，应用于终端，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括主节点MN和辅节点SN，所述方法包括：
在所述终端在所述MN发生连接失败的情况下，通过所述SN向所述MN发送MN失败信息；
其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。
第二方面，本发明实施例提供一种切换指示方法，应用于主节点MN，所述MN与终端建立有通信连接，所述终端还与辅节点SN建立有通信连接，所述方法包括：
接收所述终端通过所述SN发送的MN失败信息，其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一MCG外的小区；
基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区。
第三方面，本发明实施例提供一种终端，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括主节点MN和辅节点SN，所述终端包括：
发送模块，用于在所述终端在所述MN发生连接失败的情况下，通过所述SN向所述MN发送MN失败信息；
其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。
第四方面，本发明实施例提供一种主节点MN，所述MN与终端建立有通信连接，所述终端还与辅节点SN建立有通信连接，所述MN包括：
接收模块，用于接收所述终端通过所述SN发送的MN失败信息，其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一MCG外的小区；
切换模块，用于基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区。
第五方面，本发明实施例提供一种终端，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现上述第一方面所述的切换指示方法中的步骤。
第六方面，本发明实施例提供一种主节点MN，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现上述第二方面所述的切换指示方法中的步骤。
第七方面，本发明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上述第一方面所述的切换指示方法中的步骤；或者，所述计算机程序被处理器执行时实现上述第二方面所述的切换指示方法中的步骤。
第八方面，本发明实施例提供一种计算机软件产品，所述计算机软件产品被存储在非易失的存储介质中，所述软件产品被配置成被至少一个处理器执行以实现上述第一方面所述的切换指示方法中的步骤；或者，上述第二方面所述的切换指示方法中的步骤。
第九方面，本发明实施例提供一种终端，所述终端被配置成用于执行上述第一方面所述的切换指示方法。
第十方面，本发明实施例提供一种主节点MN，所述MN被配置成用于执行上述第二方面所述的切换指示方法。本发明实施例中，在终端在MN发生连接失败的情况下，通过SN向所述MN发送MN失败信息；其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。这样，由于所述终端上报的MN失败信息中包括了除所述MN对应的第一主小区组MCG外的小区的测量信息，从而可以避免因仅包括MCG小区的测量信息而导致切换连接失败的问题，进而提高切换效果。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例描 述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例可应用的一种网络系统的结构图；
图2是本发明实施例提供的一种切换指示方法的流程图；
图3是本发明实施例提供的另一种切换指示方法的流程图；
图4是本发明实施例提供的一种终端的结构示意图；
图5是本发明实施例提供的一种MN的结构示意图；
图6是本发明实施例提供的另一种终端的结构示意图；
图7是本发明实施例提供的另一种MN的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
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。
在本发明实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本发明实施例中被描述为“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发明的实施例。本发明实施例提供的上行资源确定方法、指示方法、终端和网络设备可以应用于无线通信系统中。该无线通信系统可以为新空口(New Radio，NR)系统，或者其他系统，例如：演进型长 期演进(Evolved Long Term Evolution，eLTE)系统或者长期演进(Long Term Evolution，LTE)系统，或者后续演进通信系统等。进一步，可以应用于上述无线通信系统中的非授权频段(Unlicensed Band)。
为便于理解本发明实施例，首先对本发明实施例中所涉及到的一些相关概念进行说明。
双连接是一种在LTE中引入的技术，也可用于NR中。双连接是指用户终端(User Equipment，UE)可以同时连接到两个节点，由两个节点同时为UE提供数据收发服务。由于UE可以同时使用两个节点的无线资源，UE的业务数据传输速率得到成倍提升。
为同一个UE服务的两个节点之间有信令接口，可以互通相关UE的配置信息。
双连接UE的服务节点可以属于同一无线接入技术(Radio Access Technology，RAT)，例如，两个LTE eNB；也可以属于不同RAT，例如，一个LTE eNB，一个NR gNB。本发明可适用于任何类型组合的双连接节点，对双连接节点的类型不做限定。
双连接UE的服务节点中有一个为主节点(MN，Master Node)，一个为辅节点(SN，Secondary Node)，其中，每个节点都可以支持载波聚合(Carrier Aggregation，CA)。网络会为双连接UE配置两个特殊小区(Special Cell)，即配置MN的一个服务小区作为UE的主小区(Primary Cell，PCell)，配置SN的一个服务小区作为UE的主辅小区(Primary Secondary Cell，PScell)。MN和SN为UE服务的其他小区为该UE的辅小区(Secondary Cell，Scell)。
多连接指超过两个节点为同一个UE提供服务。本发明同样适用于多连接，对多连接基站的类型不做限定。
类似双连接，多连接UE的服务节点中有一个为MN，其他为辅节点。
请参见图1，图1是本发明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、MN12和SN 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)、可穿 戴式设备(Wearable Device)或者机器人等终端侧设备，需要说明的是，在本发明实施例中并不限定终端11的具体类型。上述MN12和SN13均可以是基站，例如：宏站、LTE eNB、第五代(5 th Generation，5G)NR NB、gNB等；上述MN12和SN13也可以是小站，如低功率节点(Low Power Node，LPN)微微(pico)、毫微微(femto)等小站，还或者是接入点(Access Point，AP)；基站也可以是中央单元(Central Unit，CU)与其管理和控制的多个传输接收点(Transmission Reception Point，TRP)共同组成的网络节点。需要说明的是，在本发明实施例中并不限定MN12和SN13的具体类型。上述网络系统可以是5G通信系统或长期演进(Long Term Evolution，LTE)通信系统，具体可不作限定。
请参见图2，图2是本发明实施例提供的一种切换指示方法的流程图，应用于终端，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括主节点MN和辅节点SN，如图2所示，所述方法包括以下步骤：
步骤201、在所述终端在所述MN发生连接失败的情况下，通过所述SN向所述MN发送MN失败信息；
其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。
本发明实施例中，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括主节点MN和辅节点SN，也即所述终端处于多RAT双连接(Multi-RAT Dual Connectivity，MR-DC)模式，其中，所述MR-DC可以包括演进的通用移动通信系统地面无线接入(Evolved Universal Terrestrial Radio Access，E-UTRA)为MCG，NR为SCG的双连接(E-UTRA NR dual connectivity with MCG using E-UTRA and SCG using NR，EN-DC)、下一代无线接入网络(Next Generation Radio Access Network，NG-RAN)E-UTRA-NR双连接(NG-RAN E-UTRA-NR Dual Connectivity，NGEN-DC)、NR-NR双连接(NR-NR Dual Connectivity，NR-DC)和NR-E-UTRA双连接(NR-E-UTRA Dual Connectivity，EN-DC)等多种不同连接模式，本发明实施例对于MR-DC模式可不作具体限定。
上述终端在所述MN发生连接失败可以是所述终端与所述MN中的小区 连接失败，即所述终端在MN节点发生了MN failure。
其中，所述连接失败可包括如下任一种：
信令无线承载(Signalling Radio Bearer，SRB)完整性保护失败(Integrity Check Failure)；
无线资源控制(Radio Resource Control，RRC)重配失败(Reconfiguration Failure)；
MN切换失败(Handover Failure，HOF)；
无线链路失败(Radio Link Failure，RLF)；
经过条件切换的切换失败。
即所述终端在MN上发生了SRB Integrity Check Failure、RRC Reconfiguration Failure、MN HOF、RLF和经过条件切换的切换失败中的任一种，都可理解为所述终端在所述MN发生了连接失败。
在这种情况下，所述终端需向其服务节点上报MN失败信息，即上报MN failure information，以发起快速恢复连接请求(fast MCG failure recovery)，由于此时所述终端与所述MN发生了连接失败，因此，为保证所述MN失败信息能够传达至所述MN，所述终端可以向SN上报所述MN失败信息，所述SN再将所述MN失败信息转发至所述MN，其中，所述MN与所述SN之间可以通过信令接口传输数据。
而为了保证所述MN能够基于所述MN失败信息，对所述终端进行快速连接切换，以恢复所述终端与MN节点的连接，可以在所述MN失败信息中携带至少一个小区的测量信息，且所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区，以避免因仅携带MCG小区的测量信息，且携带的MCG小区测量信息无效时，而导致所述终端恢复连接失败。需说明的是，所述终端可以根据频点来测量各不同小区的信息，再将所测量得到的小区信息携带在所述MN失败信息中进行上报。
其中，所述测量信息可以包括小区的标识(Identifier，ID)、信号质量、网络类型、频点等相关信息。
这样，所述MN可接收到所述SN转发的所述终端上报的所述MN失败信息，并可基于所述MN失败信息，对所述终端进行连接切换，具体地，可 以依据所述MN失败信息中携带的至少一个小区的测量信息，确定待切换的目标小区，并将所述终端切换至所述目标小区，即建立所述终端与所述目标小区的连接。其中，所述目标小区可以是所述至少一个小区中的一个，且可以是所述至少一个小区中测量信息符合预设要求的小区，如信号质量较好或是最好的小区，以保证所述终端在切换连接后，能够具备较为稳定的网络连接和较好的通信质量。
可选的，所述至少一个小区包括如下至少一项：
所述SN对应的第一辅小区组SCG中的小区；
所述第一MCG的无线接入技术RAT中，除所述第一MCG之外的小区；
所述第一SCG的RAT中，除所述第一SCG之外的小区；
除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
其中，上述SN对应的第一SCG中的小区，即为所述SN覆盖的辅小区组中的小区，具体可以包括所述第一SCG中的一个或多个小区。
上述第一MCG的RAT中，除所述第一MCG之外的小区，可以是指在所述第一MCG所接入的网络类型中，非MCG中的小区，即网络类型与所述第一MCG相同，但非MCG的小区，例如，所述第一MCG所接入的网络类型为LTE，则所述除MCG之外的小区，可以是指网络接入类型为LTE且不属于MCG中的小区。
上述第一SCG的RAT中，除所述第一SCG之外的小区，可以是指在所述第一SCG所接入的网络类型中，非SCG中的小区，即网络类型与所述第一SCG相同，但非SCG的小区，例如，所述第一SCG所接入的网络类型为NR，则所述除SCG之外的小区，可以是指网络接入类型为NR且不属于SCG中的小区。
上述除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区，可以是除当前MCG接入的网络类型外或除当前SCG接入的网络类型外的其他网络接入类型的小区，例如，当前MCG接入的网络类型为LTE，则所述其他RAT的小区可以是网络接入类型为NR等其他小区，也即可以是网络接入类型为NR的节点所覆盖的小区；又例如，当前SCG接入的网络类型为NR，则所述其他RAT的小区可以是网络接入类型为LTE等其他小区，也即可以 是网络接入类型为LTE的节点所覆盖的小区。
也就是说，所述至少一个小区的测量信息可包括当前SCG中的小区测量信息、非MCG的小区测量信息、非SCG的小区测量信息和除当前MCG RAT或SCG RAT之外的其他RAT的小区测量信息中一种或多种。
可选的，所述至少一个小区还包括所述第一MCG中的小区。
即本发明实施例中，所述至少一个小区不仅可以包括上述小区中的一个或多个，也还可以包括所述第一MCG中的小区，即当前MCG小区，这样，所述MN可依据所述MN失败信息中携带的多个小区测量信息，为所述终端选择信号质量尽可能好的小区进行切换。
本实施例中的切换指示方法，在终端在MN发生连接失败的情况下，通过SN向所述MN发送MN失败信息；其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。这样，由于所述终端上报的MN失败信息中包括了除所述MN对应的第一主小区组MCG外的小区的测量信息，从而可以避免因仅包括MCG小区的测量信息而导致切换连接失败的问题，进而提高切换效果。
请参见图3，图3是本发明实施例提供的另一种切换指示方法的流程图，应用于主节点MN，所述MN与终端建立有通信连接，所述终端还与辅节点SN建立有通信连接，如图3所示，所述方法包括以下步骤：
步骤301、接收所述终端通过所述SN发送的MN失败信息，其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一MCG外的小区。
步骤302、基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区。
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MN侧的实施方式，其具体的实施方式可以参见图2所示的实施例中的相关说明，以为避免重复说明，本实施例不再赘述。本实施例中，同样可以提高切换效果。
其中，所述连接失败可包括如下任一种：
信令无线承载SRB完整性保护失败；
无线资源控制RRC重配失败；
MN切换失败；
无线链路失败RLF；
经过条件切换的切换失败。
可选的，所述至少一个小区包括如下至少一项：
所述SN对应的第一SCG中的小区；
所述第一MCG的RAT中，除所述第一MCG之外的小区；
所述第一SCG的RAT中，除所述第一SCG之外的小区；
除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
可选的，所述至少一个小区还包括所述第一MCG中的小区。
上述可选的实施方式可以参见图2所示的实施例中相关实施方式的说明，为避免重复说明，本实施例不再赘述。
可选的，所述步骤302包括：
基于所述MN失败信息中的至少一个小区的测量信息，确定待切换的所述目标小区；
向所述目标小区对应的目标节点发送切换请求，所述切换请求用于请求所述目标节点将所述终端切换至所述目标小区。
即所述MN在接收到所述终端上报的MN失败信息，也即相当于接收到所述终端发起的快速恢复连接请求(fast MCG failure recovery)后，可以响应所述终端的请求，对所述终端切换连接小区，具体地，可以基于所述MN失败信息携带的所述至少一个小区的测量信息，从中确定一个目标小区作为待切换的小区，其中，所述目标小区可以是测量信息符合预设要求的小区，如信号质量较好或是最好的小区，以保证所述终端在切换连接后，能够具备较为稳定的网络连接和较好的通信质量。
确定待切换的所述目标小区后，可以向所述目标小区对应的目标节点发送切换请求即HO请求，以使所述目标节点在接收到所述切换请求后，将所述终端切换至所述目标小区，其中，所述目标节点即为覆盖小区包括所述目标小区的节点。且需说明的是，当所述目标小区为所述MN覆盖的小区时，所述目标节点即为所述MN，当所述目标小区为所述SN覆盖的小区时，所述目标节点即为所述SN，当所述目标小区为除所述MN和所述SN之外的节点 覆盖的小区时，所述目标节点即为除所述MN和所述SN之外的新节点。
还需说明的是，当所述目标节点与所述MN相同时，所述向所述目标小区对应的目标节点发送切换请求，可以是向所述目标小区对应的接口发送切换请求，其中，所述MN覆盖的不同小区之间具有能够相互通信的接口。当然，由于所述目标节点与所述MN属于同一节点，也可不执行向所述目标节点发送切换请求的步骤，而是直接将所述终端切换至所述目标小区即可。
其中，所述切换请求中可携带有切换原因，所述切换原因指示所述终端在所述MN上发生连接失败。
为了使所述目标节点快速响应所述切换请求，以快速恢复所述终端与MCG的连接，避免因切换延迟而影响所述终端当前进行的业务，可在所述切换请求中携带切换原因，以指示所述目标节点，发起切换请求的原因在于所述终端在所述MN上发生了连接失败，也即所述切换请求是从所述终端发起的fast MCG failure recovery的基础上发起的。
这样，所述目标节点在接收到所述切换请求后，可以将该请求作为最高优先级别处理，立即予以响应，建立所述终端与所述目标小区的连接，而不存在延迟和响应竞争。
可选的，所述将所述终端切换至所述至少一个小区中的目标小区，包括如下任一项：
将所述终端从所述MN的第一小区切换至所述MN的第二小区；
将所述终端从所述MN的第一小区切换至第二MCG中的小区，其中，所述第二MCG为新添加的主小区组；
在所述MN和/或所述SN上对所述终端进行资源重配，以将所述终端配置至所述目标小区。
具体地，所述MN将所述终端切换至目标小区的行为可包括如下多种不同切换方式：
第一种方式中，可以是将所述终端从所述MN的第一小区切换至所述MN的第二小区，即仍保留所述MN为所述终端的主节点，但将所述终端在发生MN连接失败前所连接的所述MN的小区即所述第一小区，切换至所述MN的另一小区即所述第二小区，以恢复所述终端与所述MN的连接。
进一步的，在所述第一种方式中，所述将所述终端从所述MN的第一小区切换至所述MN的第二小区，可包括如下任一项：
将所述终端从所述MN的第一小区切换至所述MN的第二小区，其中，所述终端保留与所述SN的连接；
将所述终端从所述MN的第一小区切换至所述MN的第二小区，并将所述终端从所述SN的第三小区切换至所述SN的第四小区。
也就是说，在将所述终端从所述MN的第一小区切换至所述MN的第二小区时，对于所述终端与所述SN的连接，还可以有以下两种不同的切换行为：
其一为保留所述终端与所述SN的连接，即不对所述终端在所述SN中连接的小区进行切换，也不释放所述终端与所述SN的连接；
其二为将所述终端从所述SN的第三小区切换至所述SN的第四小区，即仍保留所述SN为所述终端的辅节点，但将所述终端在发生MN连接失败前所连接的所述SN的小区即所述第三小区，切换至所述SN中的另一小区即所述第四小区，其中，所述第四小区可以是信号质量优于所述第三小区的小区，以实现将所述终端切换至信号质量更佳的SN小区。
第二种方式中，可以是将所述终端从所述MN的第一小区切换至第二MCG中的小区，其中，所述第二MCG为新添加的主小区组，即可以添加新的节点以替换当前MN作为新的主节点，从而将该新添加的主节点所覆盖的小区作为新的主小区组，即所述第二MCG，并将所述终端在发生MN连接失败前所连接的所述MN中的第一小区切换至新添加的主小区组中的小区，以建立所述终端与所述新添加的主节点的连接。
进一步的，在所述第二种方式中，所述将所述终端从所述MN的第一小区切换至第二MCG中的小区，可包括如下任一项：
将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端保留与所述SN的连接；
将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，且将所述终端从所述SN的第三小区切换至第二SCG中的小区，其中，所述第二SCG为新添加的辅小区组；
将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端释放与所述SN的连接。
也就是说，在将所述终端从所述MN的第一小区切换至第二MCG中的小区时，对于所述终端与所述SN的连接，还可以有以下三种不同的切换行为：
其一为保留所述终端与所述SN的连接，即不对所述终端在所述SN中连接的小区进行切换，也不释放所述终端与所述SN的连接；
其二为将所述终端从所述SN的第三小区切换至第二SCG中的小区，即可以添加新的节点以替换当前SN作为新的辅节点，从而将该新添加的辅节点所覆盖的小区作为新的辅小区组，即所述第二SCG，并将所述终端在发生MN连接失败前所连接的所述SN中的第三小区切换至新添加的辅小区组中的小区，以建立所述终端与所述新添加的辅节点的连接；
其三为释放所述终端与所述SN的连接，即释放所述终端与所述SN中的小区的连接，例如，可以在所述SN对应的SCG小区中不存在信号质量满足预设要求的小区时，释放所述终端与所述SN的连接，这种情况下，所述终端可由原来的双连接或多连接模式切换成单连接模式。当然，为了保障所述终端的业务质量，也可以在后续搜索到信号质量满足预设要求的新节点的情况下，将该新节点配置为所述终端的辅节点，以恢复所述终端至双连接或多连接模式。
第三种方式中，可以是在所述MN和/或所述SN上对所述终端进行资源重配，以将所述终端配置至所述目标小区，即可以在所述MN或所述SN上对所述终端进行资源重配置，也可以在所述MN和所述SN上对所述终端进行资源重配置，向所述终端重新下发新的网络配置资源，以重新建立所述终端与所述MN和/或所述SN的连接，其中，所述终端与所述MN和/或所述SN重新建立连接后所连接的小区即为所述目标小区。
进一步的，在所述第三种方式中，所述在所述MN和/或所述SN上对所述终端进行资源重配，可包括如下任一项：
在所述MN上对所述终端进行资源重配，其中，所述终端保留与所述MN的连接，以及保留与所述SN的连接；
在所述MN和/或所述SN上对所述终端进行资源重配，并将所述MN配置为所述终端的辅节点，以及将所述SN配置为所述终端的主节点；
重配所述终端与所述SN的连接，其中，所述终端释放与所述MN的连接。
也就是说，所述在所述MN和/或所述SN上对所述终端进行资源重配，具体可以有以下三种不同的重配行为：
其一可以是在仅所述MN上对所述终端进行资源重配，即通过所述MN向所述终端重新下发新的网络配置资源，以重新建立所述终端与所述MN的连接，并且可保留所述终端与所述MN的连接，以及保留所述终端与所述SN的连接，也即继续保持所述MN为所述终端的主节点和所述SN为所述终端的辅节点的配置不变。
其二可以是在所述MN和/或所述SN上对所述终端进行资源重配，即通过所述MN和所述SN中的至少一个上向所述终端重新下发新的网络配置资源，以重新建立所述终端与所述MN和所述SN的连接关系，并且可调换所述MN与所述SN的关系，也即将原来的主节点所述MN配置为新的辅节点，而将原来的辅节点所述SN配置为新的主节点。例如，可在所述SN覆盖的小区信号质量优于所述MN覆盖的小区信号质量的情况下，重配原MN为新的SN，以及重配原SN为新的MN。
其三可以是重配所述终端与所述SN的连接，并释放所述终端与所述MN的连接，即可重配所述终端仅与所述SN中的小区连接，而释放所述终端与所述MN中的小区的连接，也即释放双连接或多连接配置，将所述终端由原来的双连接或多连接模式切换成单连接模式。例如，可以在所述MN对应的MCG小区中不存在信号质量满足预设要求的小区时，释放所述终端与所述MN的连接。当然，为了保障所述终端的业务质量，也可以在后续搜索到信号质量满足预设要求的新节点的情况下，将该新节点配置为所述终端的主节点或辅节点，将恢复所述终端至双连接或多连接模式。
这样，在对所述终端进行连接切换时，可存在上述多种不同的切换或重配方式以供选择，且可根据需求选择期望的方式来对所述终端进行有效连接切换，进而可保证切换的灵活性，并提升切换效果。
本实施例中的切换指示方法，接收终端通过SN发送的MN失败信息，其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一MCG外的小区；基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区。这样，由于所述终端上报的MN失败信息中包括了除所述MN对应的第一主小区组MCG外的小区的测量信息，从而可以避免因仅包括MCG小区的测量信息而导致切换连接失败的问题，进而提高切换效果。
请参见图4，图4是本发明实施例提供的一种终端的结构示意图，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括主节点MN和辅节点SN，如图4所示，终端400包括：
发送模块401，用于在终端400在所述MN发生连接失败的情况下，通过所述SN向所述MN发送MN失败信息；
其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。
可选的，所述至少一个小区包括如下至少一项：
所述SN对应的第一辅小区组SCG中的小区；
所述第一MCG的无线接入技术RAT中，除所述第一MCG之外的小区；
所述第一SCG的RAT中，除所述第一SCG之外的小区；
除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
可选的，所述至少一个小区还包括所述第一MCG中的小区。
可选的，所述连接失败包括如下任一种：
信令无线承载SRB完整性保护失败；
无线资源控制RRC重配失败；
MN切换失败；
无线链路失败RLF；
经过条件切换的切换失败。
本发明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，且提高切换效果。
请参见图5，图5是本发明实施例提供的一种主节点MN的结构图，所 述MN与终端建立有通信连接，所述终端还与辅节点SN建立有通信连接，如图5所示，MN500包括：
接收模块501，用于接收所述终端通过所述SN发送的MN失败信息，其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一MCG外的小区；
切换模块502，用于基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区。
可选的，所述至少一个小区包括如下至少一项：
所述SN对应的第一SCG中的小区；
所述第一MCG的RAT中，除所述第一MCG之外的小区；
所述第一SCG的RAT中，除所述第一SCG之外的小区；
除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
可选的，所述至少一个小区还包括所述第一MCG中的小区。
可选的，所述切换模块502包括：
确定单元，用于基于所述MN失败信息中的至少一个小区的测量信息，确定待切换的所述目标小区；
发送单元，用于向所述目标小区对应的目标节点发送切换请求，所述切换请求用于请求所述目标节点将所述终端切换至所述目标小区。
可选的，所述切换请求中携带有切换原因，所述切换原因指示所述终端在所述MN上发生连接失败。
可选的，所述切换模块502包括如下任一项：
第一切换单元，用于将所述终端从所述MN的第一小区切换至所述MN的第二小区；
第二切换单元，用于将所述终端从所述MN的第一小区切换至第二MCG中的小区，其中，所述第二MCG为新添加的主小区组；
重配单元，用于在所述MN和/或所述SN上对所述终端进行资源重配，以将所述终端配置至所述目标小区。
可选的，所述第一切换单元包括如下任一项：
第一切换子单元，用于将所述终端从所述MN的第一小区切换至所述MN 的第二小区，其中，所述终端保留与所述SN的连接；
第二切换子单元，用于将所述终端从所述MN的第一小区切换至所述MN的第二小区，并将所述终端从所述SN的第三小区切换至所述SN的第四小区。
可选的，所述第二切换单元包括如下任一项：
第三切换子单元，用于将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端保留与所述SN的连接；
第四切换子单元，用于将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，且将所述终端从所述SN的第三小区切换至第二SCG中的小区，其中，所述第二SCG为新添加的辅小区组；
第五切换子单元，用于将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端释放与所述SN的连接。
可选的，所述重配单元包括如下任一项：
第一重配子单元，用于在所述MN上对所述终端进行资源重配，其中，所述终端保留与所述MN的连接，以及保留与所述SN的连接；
第二重配子单元，用于在所述MN和/或所述SN上对所述终端进行资源重配，并将所述MN配置为所述终端的辅节点，以及将所述SN配置为所述终端的主节点；
第三重配子单元，用于重配所述终端与所述SN的连接，其中，所述终端释放与所述MN的连接。
本发明实施例提供的MN能够实现图3的方法实施例中MN实现的各个过程，为避免重复，这里不再赘述，且可以提高切换效果。
图6为实现本发明各个实施例的一种终端的硬件结构示意图，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括主节点MN和辅节点SN，该终端600包括但不限于：射频单元601、网络模块602、音频输出单元603、输入单元604、传感器605、显示单元606、用户输入单元607、接口单元608、存储器609、处理器610、以及电源611等部件。本领域技术人员可以理解，图6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 发明实施例中，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、机器人、可穿戴设备、以及计步器等。
其中，射频单元601，用于在所述终端在所述MN发生连接失败的情况下，通过所述SN向所述MN发送MN失败信息；
其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。
可选的，所述至少一个小区包括如下至少一项：
所述SN对应的第一辅小区组SCG中的小区；
所述第一MCG的无线接入技术RAT中，除所述第一MCG之外的小区；
所述第一SCG的RAT中，除所述第一SCG之外的小区；
除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
可选的，所述至少一个小区还包括所述第一MCG中的小区。
可选的，所述连接失败包括如下任一种：
信令无线承载SRB完整性保护失败；
无线资源控制RRC重配失败；
MN切换失败；
无线链路失败RLF；
经过条件切换的切换失败。
终端600能够实现前述实施例中终端实现的各个过程，为避免重复，这里不再赘述。本发明实施例的终端600可以提高切换效果。
应理解的是，本发明实施例中，射频单元601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610处理；另外，将上行的数据发送给基站。通常，射频单元601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601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602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603可以将射频单元601或网络模块602接收的或者在存储器609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603还可以提供与终端600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603包括扬声器、蜂鸣器以及受话器等。
输入单元604用于接收音频或视频信号。输入单元604可以包括图形处理器(Graphics Processing Unit，GPU)6041和麦克风6042，图形处理器6041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606上。经图形处理器6041处理后的图像帧可以存储在存储器609(或其它存储介质)中或者经由射频单元601或网络模块602进行发送。麦克风6042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601发送到移动通信基站的格式输出。
终端600还包括至少一种传感器605，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6061的亮度，接近传感器可在终端600移动到耳边时，关闭显示面板6061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605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606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606可包括显示面板6061，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6061。
用户输入单元607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607包括触控面板6071以及其他输入设备6072。触控面板6071，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6071上或在触控面板6071附近的操作)。触控面板6071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610，接收处理器610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6071。除了触控面板6071，用户输入单元607还可以包括其他输入设备6072。具体地，其他输入设备6072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6071可覆盖在显示面板6061上，当触控面板6071检测到在其上或附近的触摸操作后，传送给处理器610以确定触摸事件的类型，随后处理器610根据触摸事件的类型在显示面板6061上提供相应的视觉输出。虽然在图6中，触控面板6071与显示面板6061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6071与显示面板6061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608为外部装置与终端600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(Input/Output，I/O)端口、视频I/O端口、耳机端口等等。接口单元608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600内的一个或多个元件或者可以用于在终端600和外部装置之间传输数据。
存储器609可用于存储软件程序以及各种数据。存储器609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609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610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609内的软件程序和/或模块，以及调用存储在存储器609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610可包括一个或多个处理单元；优选的，处理器610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610中。
终端600还可以包括给各个部件供电的电源611(比如电池)，优选的，电源611可以通过电源管理系统与处理器610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600包括一些未示出的功能模块，在此不再赘述。
优选的，本发明实施例还提供一种终端，包括处理器610，存储器609，存储在存储器609上并可在所述处理器610上运行的计算机程序，该计算机程序被处理器610执行时实现上述切换指示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7，图7是本发明实施例提供的另一种主节点MN的结构图，所述MN与终端建立有通信连接，所述终端还与辅节点SN建立有通信连接，如图7所示，该MN700包括：处理器701、收发机702、存储器703和总线接口。
其中，收发机702，用于接收所述终端通过所述SN发送的MN失败信息，其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一MCG外的小区；
在本发明实施例中，MN700还包括：存储在存储器703上并可在处理器701上运行的计算机程序，该计算机程序被处理器701执行时实现如下步骤：
基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区。
可选的，所述至少一个小区包括如下至少一项：
所述SN对应的第一SCG中的小区；
所述第一MCG的RAT中，除所述第一MCG之外的小区；
所述第一SCG的RAT中，除所述第一SCG之外的小区；
除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
可选的，所述至少一个小区还包括所述第一MCG中的小区。
可选的，该计算机程序被处理器701执行时实现如下步骤：
基于所述MN失败信息中的至少一个小区的测量信息，确定待切换的所述目标小区；
控制收发机702向所述目标小区对应的目标节点发送切换请求，所述切换请求用于请求所述目标节点将所述终端切换至所述目标小区。
可选的，所述切换请求中携带有切换原因，所述切换原因指示所述终端在所述MN上发生连接失败。
可选的，该计算机程序被处理器701执行时实现如下任一步骤：
将所述终端从所述MN的第一小区切换至所述MN的第二小区；
将所述终端从所述MN的第一小区切换至第二MCG中的小区，其中，所述第二MCG为新添加的主小区组；
在所述MN和/或所述SN上对所述终端进行资源重配，以将所述终端配置至所述目标小区。
可选的，该计算机程序被处理器701执行时实现如下任一步骤：
将所述终端从所述MN的第一小区切换至所述MN的第二小区，其中，所述终端保留与所述SN的连接；
将所述终端从所述MN的第一小区切换至所述MN的第二小区，并将所述终端从所述SN的第三小区切换至所述SN的第四小区。
可选的，该计算机程序被处理器701执行时实现如下任一步骤：
将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端保留与所述SN的连接；
将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，且将所述终端从所述SN的第三小区切换至第二SCG中的小区，其中，所述第二SCG为新添加的辅小区组；
将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端释放与所述SN的连接。
可选的，该计算机程序被处理器701执行时实现如下任一步骤：
在所述MN上对所述终端进行资源重配，其中，所述终端保留与所述MN的连接，以及保留与所述SN的连接；
在所述MN和/或所述SN上对所述终端进行资源重配，并将所述MN配置为所述终端的辅节点，以及将所述SN配置为所述终端的主节点；
重配所述终端与所述SN的连接，其中，所述终端释放与所述MN的连接。
上述MN700可以提高切换效果。
其中，收发机702，用于在处理器701的控制下接收和发送数据，所述收发机702包括至少两个天线端口。
在图7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701代表的一个或多个处理器和存储器703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702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704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701负责管理总线架构和通常的处理，存储器703可以存储处理器701在执行操作时所使用的数据。
优选的，本发明实施例还提供一种MN，包括处理器701，存储器703，存储在存储器703上并可在所述处理器701上运行的计算机程序，该计算机程序被处理器701执行时实现上述切换指示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。
本发明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图2所示的切换指示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图3所示的切换指示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。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
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，本发明的技术方案本质上或者说对现有技术做出贡献的部分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)执行本发明各个实施例所述的方法。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来控制相关的硬件来完成，所述的程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储器(Read-Only Memory，ROM)或随机存取存储器(Random Access Memory，RAM)等。
可以理解的是，本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，模块、单元、子单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processor，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
上面结合附图对本发明的实施例进行了描述，但是本发明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发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本发明的保护之内。

Claims (31)

  1. 一种切换指示方法，应用于终端，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括主节点MN和辅节点SN，所述方法包括：
    在所述终端在所述MN发生连接失败的情况下，通过所述SN向所述MN发送MN失败信息；
    其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。
  2. 根据权利要求1所述的方法，其中，所述至少一个小区包括如下至少一项：
    所述SN对应的第一辅小区组SCG中的小区；
    所述第一MCG的无线接入技术RAT中，除所述第一MCG之外的小区；
    所述第一SCG的RAT中，除所述第一SCG之外的小区；
    除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
  3. 根据权利要求1或2所述的方法，其中，所述至少一个小区还包括所述第一MCG中的小区。
  4. 根据权利要求1所述的方法，其中，所述连接失败包括如下任一种：
    信令无线承载SRB完整性保护失败；
    无线资源控制RRC重配失败；
    MN切换失败；
    无线链路失败RLF；
    经过条件切换的切换失败。
  5. 一种切换指示方法，应用于主节点MN，所述MN与终端建立有通信连接，所述终端还与辅节点SN建立有通信连接，所述方法包括：
    接收所述终端通过所述SN发送的MN失败信息，其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一MCG外的小区；
    基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区。
  6. 根据权利要求5所述的方法，其中，所述至少一个小区包括如下至少一项：
    所述SN对应的第一SCG中的小区；
    所述第一MCG的RAT中，除所述第一MCG之外的小区；
    所述第一SCG的RAT中，除所述第一SCG之外的小区；
    除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
  7. 根据权利要求5或6所述的方法，其中，所述至少一个小区还包括所述第一MCG中的小区。
  8. 根据权利要求5所述的方法，其中，所述基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区，包括：
    基于所述MN失败信息中的至少一个小区的测量信息，确定待切换的所述目标小区；
    向所述目标小区对应的目标节点发送切换请求，所述切换请求用于请求所述目标节点将所述终端切换至所述目标小区。
  9. 根据权利要求8所述的方法，其中，所述切换请求中携带有切换原因，所述切换原因指示所述终端在所述MN上发生连接失败。
  10. 根据权利要求5所述的方法，其中，所述将所述终端切换至所述至少一个小区中的目标小区，包括如下任一项：
    将所述终端从所述MN的第一小区切换至所述MN的第二小区；
    将所述终端从所述MN的第一小区切换至第二MCG中的小区，其中，所述第二MCG为新添加的主小区组；
    在所述MN和/或所述SN上对所述终端进行资源重配，以将所述终端配置至所述目标小区。
  11. 根据权利要求10所述的方法，其中，所述将所述终端从所述MN的第一小区切换至所述MN的第二小区，包括如下任一项：
    将所述终端从所述MN的第一小区切换至所述MN的第二小区，其中，所述终端保留与所述SN的连接；
    将所述终端从所述MN的第一小区切换至所述MN的第二小区，并将所述终端从所述SN的第三小区切换至所述SN的第四小区。
  12. 根据权利要求10所述的方法，其中，所述将所述终端从所述MN的第一小区切换至第二MCG中的小区，包括如下任一项：
    将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端保留与所述SN的连接；
    将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，且将所述终端从所述SN的第三小区切换至第二SCG中的小区，其中，所述第二SCG为新添加的辅小区组；
    将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端释放与所述SN的连接。
  13. 根据权利要求10所述的方法，其中，所述在所述MN和/或所述SN上对所述终端进行资源重配，包括如下任一项：
    在所述MN上对所述终端进行资源重配，其中，所述终端保留与所述MN的连接，以及保留与所述SN的连接；
    在所述MN和/或所述SN上对所述终端进行资源重配，并将所述MN配置为所述终端的辅节点，以及将所述SN配置为所述终端的主节点；
    重配所述终端与所述SN的连接，其中，所述终端释放与所述MN的连接。
  14. 一种终端，所述终端与至少两个节点建立有通信连接，所述至少两个节点包括主节点MN和辅节点SN，所述终端包括：
    发送模块，用于在所述终端在所述MN发生连接失败的情况下，通过所述SN向所述MN发送MN失败信息；
    其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一主小区组MCG外的小区。
  15. 根据权利要求14所述的终端，其中，所述至少一个小区包括如下至少一项：
    所述SN对应的第一辅小区组SCG中的小区；
    所述第一MCG的无线接入技术RAT中，除所述第一MCG之外的小区；
    所述第一SCG的RAT中，除所述第一SCG之外的小区；
    除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
  16. 根据权利要求14或15所述的终端，其中，所述至少一个小区还包括所述第一MCG中的小区。
  17. 一种主节点MN，所述MN与终端建立有通信连接，所述终端还与辅节点SN建立有通信连接，所述MN包括：
    接收模块，用于接收所述终端通过所述SN发送的MN失败信息，其中，所述MN失败信息包括至少一个小区的测量信息，所述至少一个小区包括除所述MN对应的第一MCG外的小区；
    切换模块，用于基于所述MN失败信息，将所述终端切换至所述至少一个小区中的目标小区。
  18. 根据权利要求17所述的MN，其中，所述至少一个小区包括如下至少一项：
    所述SN对应的第一SCG中的小区；
    所述第一MCG的RAT中，除所述第一MCG之外的小区；
    所述第一SCG的RAT中，除所述第一SCG之外的小区；
    除所述第一MCG或所述第一SCG的RAT之外的其他RAT的小区。
  19. 根据权利要求17或18所述的MN，其中，所述至少一个小区还包括所述第一MCG中的小区。
  20. 根据权利要求17所述的MN，其中，所述切换模块包括：
    确定单元，用于基于所述MN失败信息中的至少一个小区的测量信息，确定待切换的所述目标小区；
    发送单元，用于向所述目标小区对应的目标节点发送切换请求，所述切换请求用于请求所述目标节点将所述终端切换至所述目标小区。
  21. 根据权利要求20所述的MN，其中，所述切换请求中携带有切换原因，所述切换原因指示所述终端在所述MN上发生连接失败。
  22. 根据权利要求17所述的MN，其中，所述切换模块包括如下任一项：
    第一切换单元，用于将所述终端从所述MN的第一小区切换至所述MN的第二小区；
    第二切换单元，用于将所述终端从所述MN的第一小区切换至第二MCG中的小区，其中，所述第二MCG为新添加的主小区组；
    重配单元，用于在所述MN和/或所述SN上对所述终端进行资源重配，以将所述终端配置至所述目标小区。
  23. 根据权利要求22所述的MN，其中，所述第一切换单元包括如下任一项：
    第一切换子单元，用于将所述终端从所述MN的第一小区切换至所述MN的第二小区，其中，所述终端保留与所述SN的连接；
    第二切换子单元，用于将所述终端从所述MN的第一小区切换至所述MN的第二小区，并将所述终端从所述SN的第三小区切换至所述SN的第四小区。
  24. 根据权利要求22所述的MN，其中，所述第二切换单元包括如下任一项：
    第三切换子单元，用于将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端保留与所述SN的连接；
    第四切换子单元，用于将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，且将所述终端从所述SN的第三小区切换至第二SCG中的小区，其中，所述第二SCG为新添加的辅小区组；
    第五切换子单元，用于将所述终端从所述MN的第一小区切换至所述第二MCG中的小区，其中，所述终端释放与所述SN的连接。
  25. 根据权利要求22所述的MN，其中，所述重配单元包括如下任一项：
    第一重配子单元，用于在所述MN上对所述终端进行资源重配，其中，所述终端保留与所述MN的连接，以及保留与所述SN的连接；
    第二重配子单元，用于在所述MN和/或所述SN上对所述终端进行资源重配，并将所述MN配置为所述终端的辅节点，以及将所述SN配置为所述终端的主节点；
    第三重配子单元，用于重配所述终端与所述SN的连接，其中，所述终端释放与所述MN的连接。
  26. 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4中任一项所述的切换指示方法中的步骤。
  27. 一种主节点MN，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5至13中任一项所述的切换指示方法中的步骤。
  28. 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4中任一项所述的切换指示方法中的步骤，或者所述计算机程序被处理器执行时实现如权利要求5至13中任一项所述的切换指示方法中的步骤。
  29. 一种计算机软件产品，所述计算机软件产品被存储在非易失的存储介质中，所述软件产品被配置成被至少一个处理器执行以实现如权利要求1至4中任一项所述的切换指示方法中的步骤，或者如权利要求5至13中任一项所述的切换指示方法中的步骤。
  30. 一种终端，所述终端被配置成用于执行如权利要求1至4中任一项所述的切换指示方法。
  31. 一种主节点MN，所述MN被配置成用于执行如权利要求5至13中任一项所述的切换指示方法。
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