WO2020155936A1 - 一种基于双/多连接的辅节点添加/更换的方法及设备 - Google Patents

一种基于双/多连接的辅节点添加/更换的方法及设备 Download PDF

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Publication number
WO2020155936A1
WO2020155936A1 PCT/CN2019/127679 CN2019127679W WO2020155936A1 WO 2020155936 A1 WO2020155936 A1 WO 2020155936A1 CN 2019127679 W CN2019127679 W CN 2019127679W WO 2020155936 A1 WO2020155936 A1 WO 2020155936A1
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Prior art keywords
configuration information
sns
connection condition
sent
rrc reconfiguration
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PCT/CN2019/127679
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English (en)
French (fr)
Inventor
彦楠
陈瑞卡
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Priority to KR1020217027901A priority Critical patent/KR20210118939A/ko
Priority to EP19913862.9A priority patent/EP3920652A4/en
Priority to US17/427,293 priority patent/US12289626B2/en
Publication of WO2020155936A1 publication Critical patent/WO2020155936A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0836—Random access procedures, e.g. with 4-step access with 2-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a method and device for adding/replacement of auxiliary nodes based on dual/multiple connections.
  • the network side needs to send configuration measurement information to the user terminal UE.
  • the UE evaluates the measurement results according to the configuration measurement information, and sends a measurement result report to the network side when the measurement results meet the requirements.
  • the network side initiates an SN add/change request to the SN according to the measurement result report reported by the UE.
  • the SN needs to send a feedback carrying SN-related configuration to the MN.
  • the MN After receiving the feedback, the MN sends a reconfiguration message to the UE, and the UE receives the reconfiguration message. , And initiate a random access procedure to the SN.
  • the UE connects to the MN and SN at the same time on the air interface, and transmits data through dual/multiple connections, which can increase the UE's data volume/throughput and meet the high-speed service transmission requirements;
  • the aforementioned process of UE accessing dual/multiple connections consumes a long time, resulting in too long a delay between the UE confirming that the measurement results meet the measurement evaluation requirements and establishing dual/multiple connections, which may cause data transmission delays and affect UE data
  • the UE’s dual/multiple connection establishment time in a certain cell is too long, which reduces the probability of using dual connections to transmit data. That is, when the dual/multiple connections are just established in the original cell or have not been established yet, the UE It may have been handed over to a new cell, and the aforementioned dual/multiple connections in the original cell may not be used to transmit data, which reduces the data transmission efficiency.
  • the process of adding or replacing the auxiliary node takes a long time, and will cause data transmission delay, and the dual/multiple connection establishment time is too long, resulting in the probability of using dual connections to transmit data reduce.
  • This application provides a method and device for adding/replacement of a secondary node based on dual/multiple connections to solve the problem that in the prior art, in a dual/multiple connection scenario, the process of adding or modifying a secondary node consumes a long time. And it will cause data transmission delay, and the dual/multiple connection establishment time is too long, which reduces the probability of using dual connections to transmit data.
  • the present application provides a method for adding/replacement of a secondary node based on dual/multiple connections.
  • the method includes:
  • the above method compared with the process in which the user terminal UE first measures and evaluates the secondary node SN, then reports the result to the primary node MN, and then receives the configuration information of the SN forwarded by the MN, and then establishes the connection, the above method first Configure the SN. After the UE measures and evaluates the SN to determine the SN that meets the connection conditions, it immediately initiates a random access process to the above SN.
  • the process from the UE measuring and evaluating the SN to establishing random access is short, and the time and With less resources, it is more convenient and efficient to add/replace SN.
  • the primary node MN is the primary network node entity MN or the primary serving cell under the primary network node entity MN
  • the secondary node SN is the secondary network node entity SN or the secondary network node entity SN.
  • the main serving cell is the primary network node entity MN or the primary serving cell under the primary network node entity MN
  • the secondary node SN is the secondary network node entity SN or the secondary network node entity SN.
  • the SN that meets the connection condition is notified to the MN through an SN access request/notification/instruction message sent to the MN separately.
  • the UE notifies the SN that meets the connection condition in multiple ways, which can be applied to different scenarios, and the UE can notify the SN that meets the connection condition in the RRC reconfiguration complete message to the MN, saving signaling Interaction and use of resources.
  • connection condition includes any one or more of the following conditions:
  • the measurement results of one or more measurement quantities of the cell under the SN meet the corresponding preset threshold requirements
  • the measurement result of one or more measurement quantities of the cell under SN is better than the measurement result of the corresponding measurement quantity of the specified cell;
  • the timer used to time the SN measurement evaluation expires.
  • the measurement quantity includes any one or more of the following measurement quantities:
  • SINR Signal to interference and noise ratio
  • the UE measures and evaluates the SN through multiple measurement quantities, so that the result of the measurement evaluation is more reliable.
  • receiving the configuration information of one or more secondary nodes SN sent by the primary node MN includes:
  • receiving the RRC reconfiguration message sent by the master node includes:
  • the UE can receive the configuration information of multiple SNs by accepting an RRC reconfiguration message sent by the MN, which saves the signaling interaction between the UE and the MN and saves signaling transmission resources.
  • it also includes:
  • the UE can notify the MN that meets the connection condition after the SN that meets the connection condition, so that when the UE initiates a random access process to the SN that meets the connection condition, the MN can learn the SN that meets the connection condition.
  • the time for the UE to notify the SN that meets the connection conditions is shortened.
  • the present application provides a method for adding/replacement of a secondary node based on dual/multiple connections.
  • the method includes:
  • the MN sends an SN addition request to the SN in advance to notify the SN to complete the SN configuration preparation process, and then forwards the SN configuration information to the UE, so that the UE can measure and evaluate the SN after obtaining the SN configuration information, and then Shorten the time for the UE to initiate a random connection with the SN during measurement evaluation.
  • the secondary node SN is a secondary network node entity SN or a primary serving cell under the secondary network node entity SN.
  • the method further includes:
  • the determined SN that meets the connection condition is notified.
  • the MN can learn the SN that meets the connection condition after the UE performs measurement and evaluation on the SN, which shortens the time for the MN to learn the SN that meets the connection condition, or obtains the message sent by the SN after the SN establishes a connection with the UE.
  • the information of the connected SN adds the way that the MN obtains the SN that meets the link condition.
  • it also includes:
  • the MN releases the SN that has not been requested by the UE to establish a connection, so that other UEs request to establish a random access procedure to the SN, which improves the utilization rate of the SN in the system, thereby improving the data transmission efficiency of the entire system.
  • connection condition includes any one or more of the following conditions:
  • the measurement results of one or more measurement quantities of the cell under the SN meet the corresponding preset threshold requirements
  • the measurement result of one or more measurement quantities of the cell under SN is better than the measurement result of the corresponding measurement quantity of the specified cell;
  • the timer used to time the SN measurement evaluation expires.
  • the measurement quantity includes any one or more of the following measurement quantities:
  • SINR Signal to interference and noise ratio
  • obtaining the SN that satisfies the connection condition determined by the UE based on the measurement and evaluation of the one or more SNs includes:
  • the MN can learn the SN that meets the connection condition in a variety of ways, which is suitable for various scenarios, and through the above method, the MN can learn the SN that meets the connection condition in time.
  • the method further includes:
  • it also includes:
  • the MN can promptly notify the original SN that established the connection with the UE before the change, so that the original SN can learn the SN change confirmation message in time, so as to save the original SN. Resources.
  • sending an SN addition request to one or more secondary nodes SN in advance includes:
  • an SN addition request is sent to one or more secondary nodes SN.
  • the MN sends an SN addition request to the estimated SN that meets the connection conditions based on the early measurement result of the SN reported by the UE, reducing useless signaling interaction and saving resources of the entire system.
  • sending an SN addition request to one or more secondary nodes SN in advance includes:
  • an SN addition request is sent to one or more secondary nodes SN.
  • receiving the configuration information returned by the one or more SNs and sending the configuration information of the one or more SNs to the user terminal UE includes:
  • the configuration information of the one/more SNs is sent to the user terminal UE through the RRC reconfiguration message.
  • sending the configuration information of the one or more SNs to the user terminal UE through the RRC reconfiguration message includes:
  • the UE can put the configuration information of multiple SNs in one RRC reconfiguration message and send it to the UE, which reduces signaling interaction and saves system resources.
  • it also includes:
  • the RRC reconfiguration complete message corresponding to the configuration information of the SN that meets the connection condition is sent.
  • the method further includes receiving the indication information sent by the SN that meets the connection condition, indicating that the SN has completed the establishment of random access with the UE.
  • the MN can receive the RRC reconfiguration complete message from the UE or SN in a variety of ways to determine the SN that meets the connection conditions or has established a connection with the above UE, so as to release the remaining SNs not requested by the above UE. In order to improve the use efficiency of SN in the system, and then improve the efficiency of data transmission.
  • the method further includes:
  • the method further includes:
  • the MN learns the SN to establish a connection with the UE, it promptly reports to the original SN connected to the UE before the change occurs, so as to save the resources of the original SN.
  • this application provides a terminal device based on a dual/multiple connection auxiliary node addition/replacement method.
  • the device includes a processor and a memory, and the memory is used to store a program executable by the processor.
  • the processor is used to read the program in the memory and execute the following steps:
  • the primary node MN is the primary network node entity MN or the primary serving cell under the primary network node entity MN
  • the secondary node SN is the secondary network node entity SN or the secondary network node entity SN.
  • the main serving cell is the primary node entity MN or the primary serving cell under the primary network node entity MN
  • the secondary node SN is the secondary network node entity SN or the secondary network node entity SN.
  • the processor is specifically configured to:
  • the SN that meets the connection condition is notified to the MN through an SN access request/notification/instruction message sent to the MN separately.
  • connection condition includes any one or more of the following conditions:
  • the measurement results of one or more measurement quantities of the cell under the SN meet the corresponding preset threshold requirements
  • the measurement result of one or more measurement quantities of the cell under SN is better than the measurement result of the corresponding measurement quantity of the specified cell;
  • the timer used to time the SN measurement evaluation expires.
  • the measurement quantity includes any one or more of the following measurement quantities:
  • SINR Signal to interference and noise ratio
  • the processor is specifically configured to:
  • the processor is specifically configured to:
  • the processor is further configured to:
  • the present application provides a network side device based on a dual/multiple connection auxiliary node addition/replacement method.
  • the device includes a processor and a memory, and the memory is used to store a program executable by the processor.
  • the processor is used to read the program in the memory and execute the following steps:
  • the secondary node SN is a secondary network node entity SN or a primary serving cell under the secondary network node entity SN.
  • the processor is further configured to:
  • the determined SN that meets the connection condition is notified.
  • the processor is further configured to:
  • connection condition includes any one or more of the following conditions:
  • the measurement results of one or more measurement quantities of the cell under the SN meet the corresponding preset threshold requirements
  • the measurement result of one or more measurement quantities of the cell under SN is better than the measurement result of the corresponding measurement quantity of the specified cell;
  • the timer used to time the SN measurement evaluation expires.
  • the measurement quantity includes any one or more of the following measurement quantities:
  • SINR Signal to interference and noise ratio
  • the processor is specifically configured to:
  • the processor is further configured to:
  • the processor is further configured to:
  • the processor is specifically configured to:
  • an SN addition request is sent to one or more secondary nodes SN.
  • the processor is specifically configured to:
  • an SN addition request is sent to one or more secondary nodes SN.
  • the processor is specifically configured to:
  • the configuration information of the one/more SNs is sent to the user terminal UE through the RRC reconfiguration message.
  • the processor is specifically configured to:
  • the processor is further configured to:
  • the RRC reconfiguration complete message corresponding to the configuration information of the SN meeting the connection condition is sent
  • the processor is further configured to:
  • the processor is further configured to :
  • the processor after receiving the RRC reconfiguration complete message corresponding to the configuration information of the SN meeting the connection condition after the UE determines the SN meeting the connection condition, the processor is further configured to:
  • the present application provides a terminal device based on a dual/multiple connection auxiliary node addition/replacement method, the device includes:
  • the SN configuration information receiving unit is configured to receive configuration information of one or more secondary nodes SN sent by the primary node MN;
  • the connection condition judging unit is configured to measure and evaluate the one or more SNs according to the configuration information of the one or more secondary node SNs, and determine the SN that meets the connection condition;
  • the connection establishment unit initiates a random access procedure to the SN meeting the connection condition.
  • the present application provides a network-side device based on a dual/multiple connection auxiliary node addition/replacement method, and the device includes:
  • the SN addition request sending unit is used to send an SN addition request to one or more secondary nodes SN in advance;
  • the SN configuration information forwarding unit is used to receive the configuration information returned by the one or more SNs, and send the configuration information of the one or more SNs to the user terminal UE.
  • the present application also provides a computer storage medium on which a computer program is stored, and when the program is executed by a processing unit, the steps of the method described in the first aspect are implemented.
  • the present application also provides a computer storage medium on which a computer program is stored, and when the program is executed by a processing unit, the steps of the method described in the second aspect are implemented.
  • FIG. 1 is a schematic diagram of a dual connection provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of the existing process of SN addition initiated by the master node MN according to Embodiment 1 of the application;
  • FIG. 3 is a schematic diagram of the existing process of the SN change initiated by the MN provided in the first embodiment of this application;
  • FIG. 4 is a schematic diagram of the existing process of SN change initiated by SN provided in the first embodiment of the application;
  • FIG. 5 is a schematic diagram of a system for adding/replacement of auxiliary nodes applied to dual/multiple connections according to Embodiment 1 of this application;
  • FIG. 6 is a schematic diagram of a specific process of adding/replacement of a dual/multiple connection auxiliary node provided in Embodiment 1 of the application;
  • FIG. 7 is a schematic diagram of a dual/multiple connection auxiliary node addition/replacement process provided by specific implementation manner 1 in the first embodiment of this application;
  • FIG. 8 is a schematic diagram of a dual/multiple connection auxiliary node addition/replacement process provided by specific implementation 2 in the first embodiment of this application;
  • FIG. 9 is a schematic diagram of a dual/multiple connection auxiliary node addition/replacement process provided by specific implementation mode 3 in the first embodiment of this application;
  • FIG. 10 is a schematic diagram of a dual/multiple connection auxiliary node addition/replacement process provided by specific implementation manner 4 in the first embodiment of this application;
  • FIG. 11 is a schematic diagram of a dual/multiple connection auxiliary node addition/replacement process provided by specific implementation manner 5 in the first embodiment of this application;
  • FIG. 12 is a schematic diagram of a dual/multiple connection auxiliary node addition/replacement terminal device provided in the second embodiment of the application;
  • FIG. 13 is a schematic diagram of a network side device for adding/replacement of a dual/multiple connection auxiliary node provided in the second embodiment of this application;
  • FIG. 14 is a schematic diagram of a dual/multiple connection auxiliary node addition/replacement terminal device provided in the second embodiment of the application;
  • FIG. 15 is a schematic diagram of a network-side device for adding/replacement of a dual/multiple connection auxiliary node provided in the second embodiment of the application.
  • the primary node “MN” in the embodiment of this application may be the primary network node entity MN or the primary serving cell under the primary network node entity MN in the dual/multiple connection scenario; the secondary node “SN” in the embodiment of this application It is the secondary network node entity SN in the dual/multiple connection scenario or the primary serving cell under the secondary network node entity SN.
  • MN Master Node
  • SN Secondary Node
  • Both MN and SN nodes can support long-term evolution/4G network-long-term evolution 5G network LTE/e-LTE /NR base station node.
  • wireless communication there is a dual connection of a primary node MN and a secondary node SN (as shown in Figure 1), and a multi-connection scenario of one MN and multiple SNs;
  • the user terminal UE When the user terminal UE transmits data, it can be connected to the MN and SN at the same time through the air interface.
  • the MN and SN are connected through the Xn-C interface (for the 5GC core network) or the X2-C interface (for the EPC core network). Dual/multiple connection data transmission can increase the data volume/throughput of the UE and meet the high-speed service transmission requirements.
  • the SN to which the user terminal UE is connected is mainly added or replaced in the following three ways:
  • Scenario 1 SN addition initiated by the master node MN
  • the network decides to add/replace a secondary SN node for the user terminal UE or modify the secondary cell group SCG (Secondary Cell Group) radio resource configuration for the existing SN node, if the MN wants to add a new SN node, it needs Initiate the SN adding process.
  • SCG Secondary Cell Group
  • Figure 2 shows the SN adding process of the RAT (Radio Access Technology) dual-connection MR-DC connected to the 5G core network 5GC.
  • RAT Radio Access Technology
  • UPF is the abbreviation of User Plane Function, which is called User Plane Function in English
  • AMF is the abbreviation of Access and Mobility Management Function, which is called Access and Mobility Management Function in English
  • RRC is the abbreviation of Radio Resource Control , Its English name is Radio Resource Control
  • PDCP is the abbreviation of Packet Data Convergence Protocol, its English name is Packet Data Convergence Protocol
  • ACK is the abbreviation of confirmation message, and its English name is Acknowledgement.
  • Step 1) MN sends SN adding request to SN node
  • Step 2) The SN replies to the MN with an SN add request confirmation message ACK, where the ACK carries the SN radio resource control RRC (Radio Resource Control) configuration;
  • RRC Radio Resource Control
  • Step 3) The MN sends an RRC reconfiguration message to the UE, and the RRC reconfiguration message carries the SN RRC configuration;
  • Step 4) The UE returns an RRC reconfiguration complete message to the MN, and the RRC reconfiguration complete message carries SN RRC reconfiguration complete information;
  • Step 5 The MN sends a related reconfiguration complete message to the SN, and the reconfiguration complete message carries SN RRC reconfiguration complete information;
  • Step 6) Perform random access procedure between UE and SN;
  • the packet data convergence protocol PDCP Packet Data Convergence Protocol
  • PDCP Packet Data Convergence Protocol
  • the MN wants to replace an existing original SN node, it needs to initiate an SN change process.
  • the SN change process initiated by the MN connected to the dual-connected EN-DC (E-UTRA-NR) of the 4G core network EPC is shown in Figure 3, which specifically includes:
  • Step 1) The MN sends an SN addition request to the target secondary node T-SN;
  • Step 2 T-SN replies SN addition request ACK to MN, and SN addition request ACK carries SN RRC configuration information;
  • Step 3a) The MN sends an SN release request to the original secondary node S-SN;
  • the original secondary node S-SN is the SN that establishes a connection with the UE before the SN initiated by the MN is changed;
  • Step 4) The MN sends an RRC reconfiguration message to the UE, and the RRC reconfiguration complete message carries configuration parameters related to the T-SN;
  • Step 5 The UE replies to the MN with an RRC reconfiguration complete message, and the RRC reconfiguration complete message carries information about the completion of the T-SN configuration;
  • Step 6) The MN sends an SN reconfiguration complete message to the T-SN, and the RRC reconfiguration complete message carries information about the completion of the T-SN configuration;
  • Step 7) Perform random access procedure between UE and T-SN;
  • Steps 8-15 The process of data packet sequence number status transfer between base station nodes, data forwarding, and path conversion with core network nodes;
  • Step 16) The MN indicates to the S-SN to release the UE context.
  • the SN wants to change the connection between its own SN node and the UE to another SN, it will initiate the SN change process, such as the SN change process initiated by the SN connected to the EN-DC of the EPC, as shown in Figure 4, which specifically includes:
  • Step 0 The original secondary node S-SN initiates an SN change request to the MN;
  • the original secondary node S-SN is the SN connected to the UE before the SN initiated by the SN is changed;
  • Step 1) The MN sends an SN addition request to the target secondary node T-SN;
  • Step 2 T-SN replies SN add request ACK to MN (carrying SN RRC configuration);
  • Step 3 The MN sends an RRC reconfiguration message to the UE, and the RRC reconfiguration message carries configuration parameters related to the T-SN;
  • Step 4) The UE replies to the MN with an RRC reconfiguration complete message, and the RRC reconfiguration complete message carries information about the completion of the T-SN configuration;
  • Step 5 MN sends SN change confirmation to S-SN;
  • Step 6 The MN sends an SN reconfiguration complete message to the T-SN.
  • Steps 8-15 The process of data packet sequence number status transfer between base station nodes, data forwarding, and path conversion with core network nodes;
  • Step 16) The MN indicates to the S-SN to release the UE context.
  • the embodiment of the present application is a method and device for adding/replacement of a secondary node based on dual/multiple connections.
  • this embodiment provides a system for adding/replacement of auxiliary nodes applied to dual/multiple connections, and the system includes:
  • a master node MN501 is used to send an SN addition request to one or more secondary nodes SN503 in advance, receive the configuration information returned by the one or more SNs, and send the configuration information of the one or more SNs to the user terminal UE502, Obtain the SN that is determined by the UE to meet the connection condition based on the measurement and evaluation of the above-mentioned one or more SNs.
  • the UE502 is configured to receive the configuration information of one or more secondary node SNs sent by the MN501, and perform measurement evaluation on the one or more SN503 according to the configuration information of the one or more secondary node SNs to determine the SN that meets the connection conditions, Notify the SN that meets the connection condition to the MN501, and initiate a random access procedure to the SN that meets the connection condition.
  • One or more secondary nodes SN503 are used to receive the SN addition request sent by the MN501 in advance, and return configuration information to the aforementioned MN, and establish a random connection with the aforementioned UE when receiving the random access procedure initiated by the UE502.
  • this embodiment proposes the following auxiliary node addition/replacement scheme for the dual/multiple connection auxiliary node addition/replacement in the foregoing scenario 1, scenario 2, and scenario 3 to improve dual/multiple connection The efficiency of auxiliary node addition/replacement.
  • the primary node MN is the primary network node entity MN or the primary serving cell under the primary network node entity MN
  • the secondary node SN is the secondary network node entity SN or the primary serving cell under the secondary network node entity SN. Service area.
  • the following describes the specific process of the auxiliary node addition/replacement solution in combination with the interaction process of the primary node MN, secondary node SN, and user terminal UE:
  • Step 1) MN sends an SN addition request to one or more secondary nodes SN in advance;
  • the aforementioned MN may send an SN addition request to one or more secondary nodes SN based on the SN change request sent by the original SN that is already connected to the UE.
  • the above-mentioned MN may send an SN addition request to one or more secondary nodes SN after receiving the UE sending the preliminary measurement result or not receiving the UE sending the preliminary measurement result;
  • the MN Before the MN receives the preliminary measurement sent by the UE, the MN needs to send the relevant configuration information of the preliminary measurement to the UE.
  • the relevant configuration information of the preceding measurement can be sent to the UE through dedicated signaling or system information.
  • the dedicated signaling It can be but not limited to RRC reconfiguration signaling or RRC release signaling.
  • the above-mentioned preliminary measurement may be, but not limited to, the RRM (Radio Resource Management) measurement in the connected state, or the measurement in which the UE enters the IDLE idle state/INACTIVE state.
  • RRM Radio Resource Management
  • the content of the foregoing preliminary measurement results may include, but is not limited to, measurement results for multiple SNs, and the content parameters of the foregoing preliminary measurement results may, but are not limited to, include:
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • SINR Signal-to-interference and noise ratio
  • CSI-RS Channel State Information-Reference Signal
  • Step 2) One/multiple SNs return configuration information to the MN;
  • the foregoing SN returns configuration information to the MN through an SN addition request ACK;
  • the above-mentioned SN configuration can, but is not limited to, configure different content according to different SNs, or configure the same content through negotiation/sharing between SN nodes (for example, random access channel RACH (Random Access Channel) configuration);
  • RACH Random Access Channel
  • Step 3) The MN receives the configuration information returned by the one or more SNs, and sends the configuration information of the one or more SNs to the user terminal UE;
  • the MN receives the configuration information returned by the one or more SNs through the add request confirmation message;
  • the MN may, but is not limited to, send the configuration information of the one or more SNs to the user terminal UE through an RRC reconfiguration message according to any of the following methods:
  • the above-mentioned SN configuration information can include, but is not limited to, any one or more of the following:
  • SN access information such as RACH configuration
  • Step 4) The UE receives the configuration information of one or more SNs sent by the MN;
  • the UE receives the RRC reconfiguration message sent by the MN, and obtains configuration information of one or more SNs sent by the MN;
  • the UE receives the configuration information of each SN in the configuration information of the MN for the one or more SNs, and the RRC reconfiguration message sent separately; or receives the configuration of the MN for one or more SNs After the information is extracted or cascaded separately, an RRC reconfiguration message is sent.
  • the UE after the UE receives the RRC reconfiguration message sent by the MN, it directly sends the RRC reconfiguration complete message corresponding to the configuration information of the one or more SNs to the MN;
  • the MN after receiving the RRC reconfiguration complete message corresponding to the configuration information of the one or more SNs from the UE, the MN sends an SN reconfiguration complete message to the one or more SNs.
  • the MN after the MN sends the configuration information of the one or more SNs to the UE through an RRC reconfiguration message, the MN receives that the UE initiates a random access procedure to the SN that meets the connection conditions, and then sends RRC reconfiguration complete message;
  • Step 5) The UE performs measurement evaluation on the one or more SNs according to the configuration information of the one or more secondary node SNs, and determines the SN that meets the connection conditions;
  • connection conditions include any one or more of the following conditions:
  • connection establishment is initiated directly for the SN with the best measurement result that completes the SN configuration preparation, or after the time for one or more SN measurement results to meet the predetermined threshold reaches the timer length The SN connection is established.
  • the foregoing measurement quantities include any one or more of the following measurement quantities:
  • the measurement result value of any one or more of the measurement variables RSRP, RSRQ, and SINR measured on the cell under the SN is higher than the measurement result of the corresponding measurement variables RSRP, RSRQ, and SINR measured on the specified cell, It is determined that the measurement result of one/more measurement quantities of the cell under the SN is better than the measurement result of the corresponding measurement quantity of the specified cell.
  • those skilled in the art can perform any/any multiple measurement quantities on the cells under the SN according to actual needs. measuring;
  • Step 6) The UE initiates a random access procedure to the SN that meets the connection conditions.
  • the SNs that meet the connection conditions are SN1 and SN2. It should be understood that the above-mentioned SN1 and SN2 can be any one/any multiple SNs that meet the connection conditions;
  • the UE may, but is not limited to, notify the above-mentioned MN of the above-mentioned SN that meets the connection condition in the following manner:
  • the aforementioned SN access request/notification/indication may, but is not limited to, include the identity of the SN that meets the conditions or the identity of the cell that the UE is connected to under the SN.
  • the UE determines the SN that meets the connection condition, and directly sends the corresponding connection condition to the MN.
  • the MN receives an RRC reconfiguration complete message corresponding to the configuration information of the SN that meets the connection condition and is sent by the UE;
  • the SN sends to the MN indication information indicating that the SN and the UE have completed the establishment of random access;
  • the above-mentioned MN receives the indication information sent by the above-mentioned SN that satisfies the connection condition, indicating that the above-mentioned SN and the above-mentioned UE have completed the establishment of random access.
  • the MN determines that the UE establishes a connection with an SN that meets the connection condition, it releases the SN that has not been requested by the UE to establish a connection.
  • Step 7) Corresponding to the above step 6), the MN obtains the SN determined by the UE to satisfy the connection condition based on the measurement and evaluation of the above one or more SNs;
  • the above MN obtains the determined SN that meets the connection conditions through the RRC reconfiguration complete message sent by the UE; or
  • the MN obtains the determined SN that meets the connection condition through the RRC reconfiguration complete message sent by the UE, and then sends an SN reconfiguration complete message to the SN that meets the connection condition;
  • the foregoing MN may also receive the determined SN that meets the connection condition notified by the SN that meets the connection condition after establishing a connection with the UE;
  • the SN that meets the connection condition establishes a connection with the UE, the SN that meets the connection condition is notified to the MN;
  • the MN receives the RRC reconfiguration complete message corresponding to the configuration information of the SN that meets the connection condition after receiving the random access procedure initiated by the UE and the SN that meets the connection condition; After receiving the RRC reconfiguration complete message corresponding to the configuration information of the SN meeting the connection condition sent by the UE, an SN change confirmation message is sent to the original SN that has been connected to the UE before.
  • the MN after the MN receives an instruction from the UE to establish a connection with the SN that meets the connection condition, or after receiving an instruction to establish a connection with the UE from an SN that meets the connection condition, Send an SN change confirmation message to the original SN that has been connected to the UE before.
  • the MN may initiate an SN preparation process to multiple SNs after receiving the preliminary measurement results sent by the UE, as shown in Figure 7, which specifically includes:
  • Step 0 Based on the preliminary measurement results reported by the UE, send an SN addition request to one or more secondary nodes SN;
  • step 0 is an optional step (marked by a dotted line in FIG. 7), and those skilled in the art can choose whether to implement it according to actual needs.
  • Step 1) MN initiates SN preparation process to multiple SNs
  • the above-mentioned initiating SN preparation process may be performed after receiving the preliminary measurement result sent by the UE, or may be performed after receiving the preliminary measurement result sent by the UE.
  • Step 2a/b/c) MN sends SN adding request to multiple SNs
  • Step 3a/b/c) Multiple SNs feed back SN add request ACK to MN, carrying configuration information of respective SN;
  • Step 4) After receiving the SN addition request ACK from one or more SNs, the MN sends an RRC reconfiguration message to the UE;
  • Step 5 The MN receives the RRC reconfiguration complete message sent by the UE;
  • Step 6a/b/c The MN sends an SN reconfiguration complete message to each SN where the UE has successfully saved/applied the configuration to complete the SN configuration preparation process for one or more SNs.
  • the UE has configured a protocol stack for the SN that has completed the SN preparation process, and is ready to establish a connection with the above-mentioned one/more SNs.
  • Step 7) According to the measurement result, the UE evaluates that the secondary node SN1 meets the connection conditions, and decides to establish a wireless connection with SN1;
  • connection condition may be one or more of multiple SNs that complete the SN configuration preparation process
  • Step 8) The UE sends an SN access request/notification/indication of an SN that meets the connection conditions to the MN;
  • the aforementioned SN access request/notification/indication may be, but not limited to, an RRC SN access message.
  • Step 9) The UE initiates a random access procedure to the SN meeting the connection conditions.
  • step 8) and step 9) can be changed, that is, the UE can send an SN access request/notification/indication for the SN to the MN after completing the random access with the SN, or directly
  • the MN sends an SN access request/notification/indication for the SN.
  • the MN For the SN addition process, the MN prepares multiple possible SNs for the UE. When the UE evaluates that a certain SN or multiple SNs meet the connection conditions, the MN will give instructions to the SN, and then the MN can request the data to be transmitted. Shunt to the SN;
  • the MN For the SN change process, the MN prepares multiple possible target SNs for the UE, and when the UE evaluates that a certain target SN/multiple target SNs meet a predetermined condition, it gives the MN an instruction and accesses the target SN. After that, the MN may request to offload the transmitted data to the target SN, and request to delete the connection between the original SN and the aforementioned UE, or the UE context information saved by the original SN.
  • the UE since the SN has completed the pre-configuration preparation process before the UE performs measurement evaluation, when the user service quality of the cell under one or more SNs becomes better, the UE can directly connect to it at a very fast speed. Enter SN, and use SN resources to receive/transmit data.
  • the specific implementation manner 2 is that after the above-mentioned SN completes the configuration preparation process, for the SN that meets the conditions, another method for notifying the MN, which is different from the specific implementation manner 1, is shown in FIG. 8, which specifically includes:
  • Steps 0 to 6) are completely consistent with steps 0 to 6) in the above-mentioned specific embodiment 1;
  • Step 7) The UE evaluates that SN1 meets the connection conditions according to the measurement results, and decides to establish a wireless connection with SN1;
  • SN1 in this specific embodiment may actually be other SNs or multiple SNs;
  • Step 8) The UE initiates random access to the SN that meets the conditions to establish a wireless connection
  • Step 9 After the SN that has completed the SN configuration preparation process accesses the UE, the SN notifies the MN that the UE has been accessed.
  • the MN can initiate the SN configuration preparation process to multiple SNs after receiving the preliminary measurement results sent by the UE, and then the UE selects
  • the process of SN establishing a connection is as follows:
  • Steps 0 to 4) are completely the same as steps 0 to 4) in the above specific embodiment 1;
  • Step 5 Based on the measurement results, the UE evaluates that SN2 meets the connection conditions, and decides to establish a wireless connection with SN2;
  • SN2 in this embodiment may actually be other SNs or multiple SNs; the above connection condition may be one or more of the multiple SNs that complete the SN configuration preparation process.
  • Step 6) The UE sends an RRC reconfiguration complete message to the MN;
  • the foregoing RRC reconfiguration complete message includes an SN access request/notification/indication for one/more SNs that meet the connection condition.
  • Step 7) The MN instructs the UE to send an SN reconfiguration complete message to one or more SNs that require connection establishment;
  • Step 8) The UE initiates a random access procedure to one or more SNs that meet the connection conditions;
  • the MN For the SN addition process, the MN prepares multiple possible SNs for the UE. When the UE evaluates that a certain SN or multiple SNs meet the connection conditions, the MN will give instructions to the SN, and then the MN can request the data to be transmitted. Shunt to the SN;
  • the MN prepares multiple possible target SNs for the UE.
  • the UE evaluates that a certain target SN or multiple target SNs meet the connection conditions, it gives the MN an instruction and accesses the target SN, and the MN can request it later
  • the transmitted data is shunted to the target SN, and the original SN is requested to be deleted.
  • the MN initiates the SN addition process to multiple SNs.
  • the SN can initiate the SN change process. As shown in Figure 10, it specifically includes:
  • Step 1) The original SN sends an SN change request to the MN;
  • the content of the aforementioned SN change request may include but is not limited to:
  • T-SN identification information carrier frequency information, and cell identification information of one or more target secondary nodes
  • RSRP, RSRQ, SINR measurement results for the serving cell and/or neighboring cells Beam-level (SSB/CSI-RS) measurement results.
  • Step 2a/b/c The MN makes a decision after receiving the request from the original S-SN, and can initiate SN addition requests to multiple SNs;
  • the above-mentioned S-SN may be one or more;
  • Step 3a/b/c multiple SNs feed back the SN add request ACK to the MN, carrying the configuration information of their respective SNs;
  • the above-mentioned SN configuration can, but is not limited to, configure different content according to different SNs, or configure the same content (such as RACH configuration) through negotiation/sharing between SN nodes;
  • Step 4) is exactly the same as step 4) in the above specific embodiment 1 / specific embodiment 2 / specific embodiment 3, after the MN receives feedback from one or more SNs, it sends an RRC reconfiguration message to the UE;
  • Step X and Step Z consistent with the steps after the MN sends the RRC reconfiguration message in the above-mentioned specific embodiment 1 / specific embodiment 2 / specific embodiment 3;
  • Step Y After step 4) (RRC reconfiguration message), the RRC reconfiguration is completed, the MN indicates to the SN that the SN reconfiguration is complete, the UE selects the SN that meets the conditions, the random access process between the UE and the SN, and the MN is notified of the UE and SN
  • the steps of SN establishing a connection can use the steps in the above-mentioned specific embodiment 1 / specific embodiment 2 / specific embodiment 3.
  • the MN may send an SN change confirmation to the original SN after receiving the indication from the UE to establish a connection between the UE and the SN;
  • the MN may send an SN change confirmation to the original SN after receiving the instruction from the SN to establish a connection between the UE and the SN;
  • the MN may send an SN change confirmation to the original SN.
  • MN does not request SN to initiate connection release to UE
  • the MN may decide whether to initiate a release process to other SNs that have not established a connection with the UE. This process is applicable to all the foregoing specific implementation manners, as shown in Figure 11, specifically including:
  • this step can be the SN access request/notification/indication (step 8) in the above specific embodiment 1, or the RRC reconfiguration complete message in the above specific embodiment 3 (step 6), or
  • the SN after the UE completes random access with the SN that meets the conditions, the SN notifies the MN that the UE and the SN have established a connection (SN access indication);
  • Step 1) The UE initiates a random access process to SN2 that meets the connection conditions;
  • the above step 1 may be before step 0, that is, after the UE is allowed to complete random access with the SN that meets the connection condition, the UE or the above SN sends an SN access instruction to the MN;
  • Step 2 The MN decides whether to delete or keep other SN configurations (SN1 and SN3 in this specific implementation);
  • the above step 2 is an optional step, and those skilled in the art can choose whether to implement the above step 2 according to actual needs;
  • steps 3a/c) are optional steps, and those skilled in the art can choose whether to implement them according to actual needs.
  • this embodiment provides a terminal device based on a dual/multiple connection scenario-based auxiliary node adding/replacement method.
  • the device includes a processor 1201, a memory 1202, and a transceiver 1203.
  • the processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 can store data used by the processor 1201 when performing operations.
  • the transceiver 1203 is used to receive and send data under the control of the processor 1201.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1201 and various circuits of the memory represented by the memory 1202 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further description will be given herein.
  • the bus interface provides the interface.
  • the processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 can store data used by the processor 1201 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 1201 or implemented by the processor 1201.
  • each step of the signal processing flow can be completed by hardware integrated logic circuits in the processor 1201 or instructions in the form of software.
  • the processor 1201 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the embodiments of the present application The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202, and completes the steps of the signal processing flow in combination with its hardware.
  • the memory 1202 is used to store a program executable by the processor 1201, and the processor 1201 is used to read the program in the memory 1201 and execute the following steps:
  • the configuration information of the one or more secondary node SNs measure and evaluate the one or more SNs to determine the SN that meets the connection condition
  • the above-mentioned primary node MN is a primary network node entity MN or a primary serving cell under the primary network node entity MN
  • the secondary node SN is a secondary network node entity SN or a primary serving cell under the secondary network node entity SN.
  • the foregoing processor is specifically configured to notify the foregoing MN of the foregoing SN that meets the connection condition through an RRC reconfiguration complete message sent to the MN; or
  • the SN that meets the connection condition is notified to the above-mentioned MN through an SN access request/notification/instruction message sent separately to the MN.
  • connection conditions include any one or more of the following conditions:
  • the measurement results of one or more measurement quantities of the cell under the SN meet the corresponding preset threshold requirements
  • the measurement result of one or more measurement quantities of the cell under SN is better than the measurement result of the corresponding measurement quantity of the specified cell;
  • the timer used to time the SN measurement evaluation expires.
  • the foregoing measurement quantity includes any one or more of the following measurement quantities:
  • SINR Signal to interference and noise ratio
  • the aforementioned processor 1201 is specifically configured to receive an RRC reconfiguration message sent by the MN, and obtain configuration information of one or more SNs sent by the MN.
  • the foregoing processor 1201 is specifically configured to receive the RRC reconfiguration message separately sent by the MN for each SN in the configuration information of the one or more SNs; or
  • the processor 1201 is further configured to, after receiving the RRC reconfiguration message sent by the master node, directly send to the MN an RRC reconfiguration complete message corresponding to the configuration information of the one or more SNs; or
  • the RRC reconfiguration complete message corresponding to the configuration information of the SN that meets the connection condition is sent to the MN.
  • this embodiment also provides a network side device based on a method for adding/replacement of a secondary node in a dual/multiple connection scenario.
  • the device includes a processor 1301, a memory 1302, and a transceiver. 1303.
  • the processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1302 can store data used by the processor 1301 when performing operations.
  • the transceiver 1303 is used to receive and send data under the control of the processor 1301.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1301 and various circuits of the memory represented by the memory 1302 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further description will be given herein.
  • the bus interface provides the interface.
  • the processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1302 can store data used by the processor 1301 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 1301 or implemented by the processor 1301.
  • each step of the signal processing flow can be completed by hardware integrated logic circuits in the processor 1301 or instructions in the form of software.
  • the processor 1301 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the embodiments of the present application The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 1302, and the processor 1301 reads the information in the memory 1302, and completes the steps of the signal processing flow in combination with its hardware.
  • the memory 1302 is used to store a program executable by the processor 1301, and the processor 1301 is used to read the program in the memory 1301 and execute the following steps:
  • the aforementioned secondary node SN is the secondary network node entity SN or the primary serving cell under the secondary network node entity SN.
  • the above-mentioned processor is further configured to obtain an SN that is determined by the UE to meet the connection condition based on the measurement and evaluation of the above-mentioned one or more SNs; or
  • the determined SN that meets the connection condition is notified.
  • the processor 1301 is further configured to, after determining that the UE establishes a connection with an SN that meets the connection condition, release the SN that has not been requested by the UE to establish a connection.
  • connection conditions include any one or more of the following conditions:
  • the measurement results of one or more measurement quantities of the cell under the SN meet the corresponding preset threshold requirements
  • the measurement result of one or more measurement quantities of the cell under SN is better than the measurement result of the corresponding measurement quantity of the specified cell;
  • the timer used to time the SN measurement evaluation expires.
  • the foregoing measurement quantity includes any one or more of the following measurement quantities:
  • SINR Signal to interference and noise ratio
  • the aforementioned processor 1301 is specifically configured to obtain the aforementioned determined SN that satisfies the connection condition through an RRC reconfiguration complete message sent by the UE; or
  • the processor 1301 is further configured to:
  • the above-mentioned processor is further configured to obtain the SN that satisfies the connection condition determined by the UE based on the measurement and evaluation of the above-mentioned one or more SNs; After the determined SN that meets the connection conditions, the SN change confirmation message is sent to the original SN that has been connected to the UE before
  • the above-mentioned processor 1301 is specifically configured to send an SN addition request to one or more secondary nodes SN based on the previous measurement result reported by the UE.
  • the foregoing processor is specifically configured to:
  • an SN addition request is sent to one or more secondary nodes SN.
  • the aforementioned processor 1301 is specifically configured to receive the configuration information returned by the aforementioned one or more SNs through an add request confirmation message;
  • the configuration information of the one or more SNs is sent to the user terminal UE.
  • the processor 1301 is specifically configured to send the configuration information of each SN in the configuration information of the one or more SNs to the UE by separately sending an RRC reconfiguration message; or
  • the processor 1301 is further configured to receive the RRC reconfiguration complete message corresponding to the configuration information of the one or more SNs directly sent after the UE receives the RRC reconfiguration message; or
  • the RRC reconfiguration complete message corresponding to the configuration information of the above-mentioned SN meeting the connection condition is sent;
  • the above-mentioned processor is further configured to receive indication information sent by the above-mentioned SN that satisfies the connection condition and instructs the above-mentioned SN to establish random access with the above-mentioned UE.
  • the processor 1301 after receiving the RRC reconfiguration complete message corresponding to the configuration information of the one or more SNs directly sent after the UE receives the RRC reconfiguration message, the processor 1301 is further configured to:
  • the processor 1301 is further configured to:
  • this embodiment provides a terminal device based on a dual/multiple connection scenario-based auxiliary node addition/replacement method, and the device includes:
  • the SN configuration information receiving unit 1401 is configured to receive configuration information of one or more secondary nodes SN sent by the primary node MN;
  • the connection condition judging unit 1402 is configured to measure and evaluate the one or more SNs according to the configuration information of the one or more secondary node SNs, and determine the SN that meets the connection conditions;
  • connection establishment unit 1403 initiates a random access process to the SN that meets the connection conditions.
  • the primary node MN is the primary network node entity MN or the primary serving cell under the primary network node entity MN
  • the secondary node SN is the secondary network node entity SN or the primary serving cell under the secondary network node entity SN.
  • the foregoing connection establishment unit is further configured to notify the foregoing MN of the SN that meets the connection condition through an RRC reconfiguration complete message sent to the MN; or
  • the SN that meets the connection condition is notified to the above-mentioned MN through an SN access request/notification/instruction message sent separately to the MN.
  • connection conditions include any one or more of the following conditions:
  • the measurement results of one or more measurement quantities of the cell under the SN meet the corresponding preset threshold requirements
  • the measurement result of one or more measurement quantities of the cell under SN is better than the measurement result of the corresponding measurement quantity of the specified cell;
  • the timer used to time the SN measurement evaluation expires.
  • the aforementioned measurement quantity includes any one or more of the following measurement quantities:
  • SINR Signal to interference and noise ratio
  • the aforementioned SN configuration information receiving unit is configured to receive an RRC reconfiguration message sent by the MN, and obtain configuration information of one or more SNs sent by the MN.
  • the foregoing SN configuration information receiving unit is configured to receive an RRC reconfiguration message separately sent by the MN for the configuration information of each SN in the configuration information of the one or more SNs;
  • connection establishment unit is further configured to directly send an RRC reconfiguration complete message corresponding to the configuration information of the one or more SNs to the MN after receiving the RRC reconfiguration message sent by the master node;
  • the RRC reconfiguration complete message corresponding to the configuration information of the SN that meets the connection condition is sent to the MN.
  • this embodiment also provides a network side device based on a dual/multiple connection scenario-based method for adding/replacement of a secondary node, the device including:
  • the SN addition request sending unit 1501 is configured to send an SN addition request to one or more secondary nodes SN in advance;
  • the SN configuration information forwarding unit 1502 is configured to receive the configuration information returned by the one or more SNs, and send the configuration information of the one or more SNs to the user terminal UE.
  • the aforementioned secondary node SN is the secondary network node entity SN or the primary serving cell under the secondary network node entity SN.
  • the above device further includes:
  • connection determining unit 1503 obtains the SN that satisfies the connection condition determined by the UE based on the measurement and evaluation of the one or more SNs; or
  • the determined SN that meets the connection condition is notified.
  • the above-mentioned connection determination unit is further configured to determine that the above-mentioned UE establishes a connection with an SN that meets the connection condition, and then release the SN that has not been requested by the UE to establish a connection.
  • connection conditions include any one or more of the following conditions:
  • the measurement results of one or more measurement quantities of the cell under the SN meet the corresponding preset threshold requirements
  • the measurement result of one or more measurement quantities of the cell under SN is better than the measurement result of the corresponding measurement quantity of the specified cell;
  • the timer used to time the SN measurement evaluation expires.
  • the foregoing measurement quantity includes any one or more of the following measurement quantities:
  • SINR Signal to interference and noise ratio
  • the above-mentioned connection determining unit is configured to obtain the above-mentioned determined SN that satisfies the connection condition through an RRC reconfiguration complete message sent by the UE; or
  • the connection determination unit is further configured to send an SN reconfiguration complete message to the SN that satisfies the connection condition.
  • the above-mentioned connection determination unit is further configured to obtain the SN that satisfies the connection condition determined by the UE based on the measurement and evaluation of the above-mentioned one/more SNs; or receives the SN that satisfies the connection condition to notify after establishing a connection with the UE After the determined SN that meets the connection condition, the SN change confirmation message is sent to the original SN that has been connected to the UE before.
  • the aforementioned SN addition request sending unit is configured to send an SN addition request to one or more secondary nodes SN based on the preliminary measurement result reported by the UE.
  • the foregoing processor is specifically configured to:
  • an SN addition request is sent to one or more secondary nodes SN.
  • the foregoing SN configuration information forwarding unit is configured to receive the configuration information returned by the one or more SNs through an add request confirmation message;
  • the configuration information of the above-mentioned one/multiple SNs is sent to the user terminal UE through the RRC reconfiguration message.
  • the foregoing SN configuration information forwarding unit is configured to send the configuration information of each SN in the configuration information of the one or more SNs to the UE by separately sending an RRC reconfiguration message;
  • connection determining unit is further configured to receive an RRC reconfiguration complete message corresponding to the configuration information of the one or more SNs directly sent after the UE receives the RRC reconfiguration message;
  • the RRC reconfiguration complete message corresponding to the configuration information of the SN that satisfies the connection condition is sent.
  • connection determining unit is further configured to receive indication information sent by the SN that meets the connection condition, indicating that the SN has completed the establishment of random access with the UE.
  • the uplink connection determining unit is further used to send Each SN sends an SN reconfiguration complete message.
  • the connection determining unit is further configured to: The original SN that has been connected to the UE before sends an SN change confirmation message.
  • An embodiment of the present application provides a computer-readable non-volatile storage medium, including program code.
  • program code When the program code is run on a computing terminal, the program code is used to make the computing terminal execute the above-mentioned Method steps.
  • this application may take the form of a computer program product on a computer-usable or computer-readable storage medium, which has computer-usable or computer-readable program code implemented in the medium to be used or used by the instruction execution system. Used in conjunction with the instruction execution system.
  • a computer-usable or computer-readable medium can be any medium that can contain, store, communicate, transmit, or transmit a program for use by an instruction execution system, device, or device, or in combination with an instruction execution system, Device or equipment use.

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Abstract

本申请公开了一种基于双/多连接的辅节点添加/更换的方法及设备，涉及无线通信技术领域，用以解决在无线通信的双/多连接场景中，存在进行辅节点的添加或修改过程消耗时间长，且会造成数据发送延迟，且双/多连接建立时间过长导致使用双连接传输数据的概率降低的问题，本申请方法包括：用户终端接收主节点MN发送的一个/多个辅节点SN的配置信息，根据所述一个/多个辅节点SN的配置信息，对所述一个/多个SN进行测量评估，确定满足连接条件的SN，向所述满足连接条件的SN发起随机接入过程。

Description

一种基于双/多连接的辅节点添加/更换的方法及设备
相关申请的交叉引用
本申请要求在2019年01月31日提交中国专利局、申请号为201910099458.X、申请名称为“一种基于双/多连接的辅节点添加/更换的方法及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域，特别涉及一种基于双/多连接的辅节点添加/更换的方法及设备。
背景技术
在无线网络技术中，在一个主节点MN(Master Node)连接一个或多个辅节点SN(Secondary Node)的双/多连接场景下，主要通过以下三种方式对用户终端UE连接的SN进行添加或更换：
1)MN发起SN添加过程；
2)MN发起SN改变过程；
3)SN发起的SN改变过程。
在上述三种进行SN的添加或更换的方式中，均需要网络侧向用户终端UE发送配置测量信息，UE根据配置测量信息评估测量结果，在确定测量结果满足要求时向网络侧发送测量结果报告，之后网络侧根据UE上报的测量结果报告，向SN发起SN添加/改变请求，SN需要向MN发送携带SN相关配置的反馈，MN在接收反馈后向UE发送重配置消息，UE接收重配置消息，并向SN发起随机接入流程，UE在空口同时连接到MN以及SN，通过双/多连接进行数据发送，可以提升UE的数据量/吞吐量，满足高速率的业务传输需求；
但是，上述UE接入双/多连接的过程消耗时间长，导致UE从确定测量结果满足测量评估要求到建立双/多连接之间的时延过大，进而可能造成数据 发送延迟，影响UE数据量/吞吐量，且针对小区场景，UE在某一小区双/多连接建立时间过长导致降低使用双连接传输数据的概率，即当双/多连接在原小区刚刚建立或尚未建立完成时，UE就可能已经切换到了新的小区，进而不会使用上述在原小区的双/多连接传输数据，降低了数据传输效率。
综上所述，在双/多连接场景中，存在进行辅节点的添加或更换过程消耗时间长，且会造成数据发送延迟，且双/多连接建立时间过长导致使用双连接传输数据的概率降低。
发明内容
本申请提供一种基于双/多连接的辅节点添加/更换的方法及设备，用以解决现有技术中，在双/多连接场景中，存在进行辅节点的添加或修改过程消耗时间长，且会造成数据发送延迟，且双/多连接建立时间过长导致使用双连接传输数据的概率降低。
第一方面，本申请提供一种基于双/多连接的辅节点添加/更换方法，该方法包括：
接收主节点MN发送的一个/多个辅节点SN的配置信息；
根据所述一个/多个辅节点SN的配置信息，对所述一个/多个SN进行测量评估，确定满足连接条件的SN；
向所述满足连接条件的SN发起随机接入过程。
上述方法中，对比与用户终端UE先对辅节点SN进行测量评估，再将结果上报给主节点MN，随后再接收MN转发的SN的配置信息，进而再建立连接的过程而言，上述方法先进行SN的配置，UE在对SN进行测量评估确定满足连接条件的SN后，随即向上述SN发起随机接入过程中，从UE对SN进行测量评估到建立随机接入的过程短，所用时间和资源少，添加/更换SN更便捷高效。
在一种可能的实现方式中，所述主节点MN为主网络节点实体MN或者主网络节点实体MN下的主服务小区，所述辅节点SN为辅网络节点实体SN 或者辅网络节点实体SN下的主服务小区。
在一种可能的实现方式中，确定满足连接条件的SN之后，还包括：
通过向MN发送的RRC重配置完成消息，向所述MN通知所述满足连接条件的SN；或者
通过单独向MN发送的SN接入请求/通知/指示消息，向所述MN通知所述满足连接条件的SN。
上述方法中，UE通过多种方式向MN通知满足连接条件的SN，可以适用于不同的场景，且UE可以在RRC重配置完成消息中，将满足连接条件的SN通知给MN，节省了信令的交互和资源的使用。
在一种可能的实现方式中，所述连接条件包括如下任一或任多个条件：
SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
用于对SN测量评估计时的定时器超时。
在一种可能的实现方式中，所述测量量包括如下任一或任多个测量量：
参考信号接收功率RSRP；
参考信号接收质量RSRQ；
信号与干扰和噪声比SINR。
上述方法中，UE通过对多个测量量对SN进行测量评估，使测量评估的结果更可靠。
在一种可能的实现方式中，接收主节点MN发送的一个/多个辅节点SN的配置信息，包括：
接收MN发送的RRC重配置消息，获取MN发送的一个/多个SN的配置信息。
在一种可能的实现方式中，接收主节点发送的RRC重配置消息，包括：
接收MN针对所述一个/多个SN的配置信息中的每个SN的配置信息，单独发送的RRC重配置消息；或者
接收MN针对一个/多个SN的配置信息进行抽取或单独级联后，发送的一条RRC重配置消息。
上述方法中，UE可以通过接受MN发送的一个RRC重配置消息接收多个SN的配置信息，节省了UE与MN的信令交互，且节约了信令传输资源。
在一种可能的实现方式中，还包括：
接收主节点发送的RRC重配置消息后，直接向所述MN发送对应所述一个/多个SN的配置信息的RRC重配置完成消息；或者
确定满足连接条件的SN后，向所述MN发送对应所述满足连接条件的SN的配置信息的RRC重配置完成消息。
上述方法中，UE可以在满足连接条件的SN后，向MN通知满足连接条件的MN，以致UE向所述满足连接条件的SN发起随机接入过程的同时，MN能获知满足连接条件的SN，缩短了UE向MN通知满足连接条件的SN的时间。
第二方面，本申请提供一种基于双/多连接的辅节点添加/更换方法，该方法包括：
向一个/多个辅节点SN预先发送SN添加请求；
接收所述一个/多个SN返回的配置信息，并将所述一个/多个SN的配置信息发送给用户终端UE。
上述方法中，MN通过预先向SN发送SN添加请求，通知SN完成SN配置的准备过程，进而将SN的配置信息转发给UE，以使UE在获取SN的配置信息后对SN进行测量评估，进而缩短UE在测量评估到与SN发起随机连接的时间。
在一种可能的实现方式中，所述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
在一种可能的实现方式中，将所述一个/多个SN的配置信息发送给用户终端UE之后，还包括：
获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件 的SN；或者
接收满足连接条件的SN在与UE建立连接后，通知的所述确定的满足连接条件的SN。
上述方法中，MN在UE对SN进行测量评估后，即可获知满足连接条件的SN，缩短了MN获知满足连接条件的SN的时间，或者在SN于UE建立连接后获取SN发送的消息获知已被连接的SN的信息，增加了MN获取满足链接条件的SN的方式。
在一种可能的实现方式中，还包括：
确定所述UE与满足连接条件的SN建立连接后，释放未被UE请求建立连接的SN。
上述方法中，MN将未被上述UE请求建立连接的SN释放，以便其他UE请求对上述SN建立随机接入过程，提高了系统中SN的使用率，进而提升整个系统的数据传输效率。
在一种可能的实现方式中，所述连接条件包括如下任一或任多个条件：
SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
用于对SN测量评估计时的定时器超时。
在一种可能的实现方式中，所述测量量包括如下任一或任多个测量量：
参考信号接收功率RSRP；
参考信号接收质量RSRQ；
信号与干扰和噪声比SINR。
在一种可能的实现方式中，获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件的SN，包括：
通过UE发送的RRC重配置完成消息，获取所述确定的满足连接条件的SN；或者
通过UE单独发送的SN接入请求/通知/指示消息，获取所述确定的满足 连接条件的SN。
上述方法中，MN可以通过多种方式获知满足连接条件的SN，适用于各种场景，且通过上述方法，MN可以及时的获知上述满足连接条件的SN。
在一种可能的实现方式中，通过UE发送的RRC重配置完成消息，获取所述确定的满足连接条件的SN之后，还包括：
向所述满足连接条件的SN，发送SN重配置完成消息。
在一种可能的实现方式中，还包括：
获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者接收满足连接条件的SN在与UE建立连接后，通知的所述确定的满足连接条件的SN之后，向之前与UE已经有连接的原SN发送SN改变确认消息。
上述方法中，在UE与新的SN建立连接后，上述MN能及时的通知发生改变前与上述UE建立连接的原SN，使上述原SN能及时获知SN改变确认消息，以便节省上述原SN的资源。
在一种可能的实现方式中，向一个/多个辅节点SN预先发送SN添加请求，包括：
基于UE上报的前期测量结果，向一个/多个辅节点SN发送SN添加请求。
上述方法中，MN基于UE上报的对SN的早期测量结果，向预估的满足连接条件的SN发送SN添加请求，减少无用的信令交互，节约整个系统的资源。
在一种可能的实现方式中，向一个/多个辅节点SN预先发送SN添加请求，包括：
基于与UE已经有连接的原SN发送的SN改变请求，向一个/多个辅节点SN发送SN添加请求。
在一种可能的实现方式中，接收所述一个/多个SN返回的配置信息，并将所述一个/多个SN的配置信息发送给用户终端UE，包括：
接收所述一个/多个SN通过添加请求确认消息返回的配置信息；
通过RRC重配置消息，将所述一个/多个SN的配置信息发送给用户终端UE。
在一种可能的实现方式中，通过RRC重配置消息，将所述一个/多个SN的配置信息发送给用户终端UE，包括：
针对所述一个/多个SN的配置信息中的每个SN的配置信息，通过单独发送RRC重配置消息的发送给UE；或者
针对一个/多个SN的配置信息进行抽取或单独级联后，通过一条RRC重配置消息发送给UE。
上述方法中，UE可以将多个SN的配置信息放在一条RRC重配置消息中发送给UE，减少了信令的交互，节约了系统的资源。
在一种可能的实现方式中，还包括：
接收所述UE收到RRC重配置消息后，直接发送的对应所述一个/多个SN的配置信息的RRC重配置完成消息；或者
接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息。
在一种可能的实现方式中，还包括，接收所述满足连接条件的SN发送的，指示所述SN与所述UE建立随机接入完成的指示信息。
上述方法中，MN可以通过多种方式，及时的接收UE或SN发生的RRC重配置完成消息，以确定满足连接条件或已与上述UE建立连接的SN，以便释放其余未被上述UE请求的SN以提升系统中SN的使用效率，进而提升数据传输的效率。
在一种可能的实现方式中，接收所述UE收到RRC重配置消息后，直接发送的对应所述一个/多个SN的配置信息的RRC重配置完成消息之后，还包括：
向所述一个/多个SN发送SN重配置完成消息。
在一种可能的实现方式中，接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息之后， 还包括：
向之前与UE已经有连接的原SN发送SN改变确认消息。
上述方法中，MN在获知与UE建立连接的SN后，及时向发生改变前与上述UE连接的原SN，以便节约上述原SN的资源。
第三方面，本申请提供一种基于双/多连接的辅节点添加/更换方法的终端设备，该设备包括处理器和存储器，所述存储器用于存储所述处理器可执行的程序，所述处理器用于读取所述存储器中的程序并执行如下步骤：
接收主节点MN发送的一个/多个辅节点SN的配置信息；
根据所述一个/多个辅节点SN的配置信息，对所述一个/多个SN进行测量评估，确定满足连接条件的SN；
向所述满足连接条件的SN发起随机接入过程。
在一种可能的实现方式中，所述主节点MN为主网络节点实体MN或者主网络节点实体MN下的主服务小区，所述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
在一种可能的实现方式中，所述处理器具体用于：
通过向MN发送的RRC重配置完成消息，向所述MN通知所述满足连接条件的SN；或者
通过单独向MN发送的SN接入请求/通知/指示消息，向所述MN通知所述满足连接条件的SN。
在一种可能的实现方式中，所述连接条件包括如下任一或任多个条件：
SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
用于对SN测量评估计时的定时器超时。
在一种可能的实现方式中，所述测量量包括如下任一或任多个测量量：
参考信号接收功率RSRP；
参考信号接收质量RSRQ；
信号与干扰和噪声比SINR。
在一种可能的实现方式中，所述处理器具体用于：
接收MN发送的RRC重配置消息，获取MN发送的一个/多个SN的配置信息。
在一种可能的实现方式中，所述处理器具体用于：
接收MN针对所述一个/多个SN的配置信息中的每个SN的配置信息，单独发送的RRC重配置消息；或者
接收MN针对一个/多个SN的配置信息进行抽取或单独级联后，发送的一条RRC重配置消息。
在一种可能的实现方式中，所述处理器还用于：
接收主节点发送的RRC重配置消息后，直接向所述MN发送对应所述一个/多个SN的配置信息的RRC重配置完成消息；或者
确定满足连接条件的SN后，向所述MN发送对应所述满足连接条件的SN的配置信息的RRC重配置完成消息。
第四方面，本申请提供一种基于双/多连接的辅节点添加/更换方法的网络侧设备，该设备包括处理器和存储器，所述存储器用于存储所述处理器可执行的程序，所述处理器用于读取所述存储器中的程序并执行如下步骤：
向一个/多个辅节点SN预先发送SN添加请求；
接收所述一个/多个SN返回的配置信息，并将所述一个/多个SN的配置信息发送给用户终端UE。
在一种可能的实现方式中，所述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
在一种可能的实现方式中，所述处理器还用于：
获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者
接收满足连接条件的SN在与UE建立连接后，通知的所述确定的满足连接条件的SN。
在一种可能的实现方式中，所述处理器还用于：
确定所述UE与满足连接条件的SN建立连接后，释放未被UE请求建立连接的SN。
在一种可能的实现方式中，所述连接条件包括如下任一或任多个条件：
SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
用于对SN测量评估计时的定时器超时。
在一种可能的实现方式中，所述测量量包括如下任一或任多个测量量：
参考信号接收功率RSRP；
参考信号接收质量RSRQ；
信号与干扰和噪声比SINR。
在一种可能的实现方式中，所述处理器具体用于：
通过UE发送的RRC重配置完成消息，获取所述确定的满足连接条件的SN；或者
通过UE单独发送的SN接入请求/通知/指示消息，获取所述确定的满足连接条件的SN。
在一种可能的实现方式中，通过UE发送的RRC重配置完成消息，获取所述确定的满足连接条件的SN之后，所述处理器还用于：
向所述满足连接条件的SN，发送SN重配置完成消息。
在一种可能的实现方式中，所述处理器还用于：
获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者接收满足连接条件的SN在与UE建立连接后，通知的所述确定的满足连接条件的SN之后，向之前与UE已经有连接的原SN发送SN改变确认消息。
在一种可能的实现方式中，所述处理器具体用于：
基于UE上报的前期测量结果，向一个/多个辅节点SN发送SN添加请求。
在一种可能的实现方式中，所述处理器具体用于：
基于与UE已经有连接的原SN发送的SN改变请求，向一个/多个辅节点SN发送SN添加请求。
在一种可能的实现方式中，所述处理器具体用于：
接收所述一个/多个SN通过添加请求确认消息返回的配置信息；
通过RRC重配置消息，将所述一个/多个SN的配置信息发送给用户终端UE。
在一种可能的实现方式中，所述处理器具体用于：
针对所述一个/多个SN的配置信息中的每个SN的配置信息，通过单独发送RRC重配置消息的发送给UE；或者
针对一个/多个SN的配置信息进行抽取或单独级联后，通过一条RRC重配置消息发送给UE。
在一种可能的实现方式中，所述处理器还用于：
接收所述UE收到RRC重配置消息后，直接发送的对应所述一个/多个SN的配置信息的RRC重配置完成消息；或者
接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息
在一种可能的实现方式中，所述处理器还用于：
接收所述满足连接条件的SN发送的，指示所述SN与所述UE建立随机接入完成的指示信息。
在一种可能的实现方式中，接收所述UE收到RRC重配置消息后，直接发送的对应所述一个/多个SN的配置信息的RRC重配置完成消息之后，所述处理器还用于：
向所述一个/多个SN发送SN重配置完成消息。
在一种可能的实现方式中，接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息之后，所述处理器还用于：
向之前与UE已经有连接的原SN发送SN改变确认消息。
第五方面，本申请提供一种基于双/多连接的辅节点添加/更换方法的终端装置，该装置包括：
SN配置信息接收单元，用于接收主节点MN发送的一个/多个辅节点SN的配置信息；
连接条件判断单元，用于根据所述一个/多个辅节点SN的配置信息，对所述一个/多个SN进行测量评估，确定满足连接条件的SN；
连接建立单元向所述满足连接条件的SN发起随机接入过程。
第六方面，本申请提供一种基于双/多连接的辅节点添加/更换方法的网络侧装置，该装置包括：
SN添加请求发送单元，用于向一个/多个辅节点SN预先发送SN添加请求；
SN配置信息转发单元，用于接收上述一个/多个SN返回的配置信息，并将上述一个/多个SN的配置信息发送给用户终端UE。
第七方面，本申请还提供一种计算机存储介质，其上存储有计算机程序，该程序被处理单元执行时实现第一方面所述方法的步骤。
第八方面，本申请还提供一种计算机存储介质，其上存储有计算机程序，该程序被处理单元执行时实现第二方面所述方法的步骤。
另外，第三方面至第八方面中任一种实现方式所带来的技术效果可参见第一方面和第二方面中不同实现方式所带来的技术效果，此处不再赘述。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域的普通技术人员来讲，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为本申请实施例提供的一种双连接的示意图；
图2为本申请实施例一提供的主节点MN发起的SN添加的现有过程示意图；
图3为本申请实施例一提供的MN发起的SN改变的现有过程示意图；
图4为本申请实施例一提供的SN发起的SN改变的现有过程示意图；
图5为本申请实施例一提供的一种应用于双/多连接的辅助节点添加/更换的系统示意图；
图6为本申请实施例一提供的一种双/多连接的辅助节点添加/更换的具体流程示意图；
图7为本申请实施例一中具体实施方式1提供的一种双/多连接的辅助节点添加/更换流程示意图；
图8为本申请实施例一中具体实施方式2提供的一种双/多连接的辅助节点添加/更换流程示意图；
图9为本申请实施例一中具体实施方式3提供的一种双/多连接的辅助节点添加/更换流程示意图；
图10为本申请实施例一中具体实施方式4提供的一种双/多连接的辅助节点添加/更换流程示意图；
图11为本申请实施例一中具体实施方式5提供的一种双/多连接的辅助节点添加/更换流程示意图；
图12为本申请实施例二提供的一种双/多连接的辅助节点添加/更换的终端设备示意图；
图13为本申请实施例二提供的一种双/多连接的辅助节点添加/更换的网络侧设备示意图；
图14为本申请实施例二提供的一种双/多连接的辅助节点添加/更换的终端装置示意图；
图15为本申请实施例二提供的一种双/多连接的辅助节点添加/更换的网络侧装置示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述，显然，所描述的实施例仅仅是本申请一部份实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
下面对文中出现的一些词语进行解释：
1、本申请实施例中字符“/”一般表示前后关联对象是一种“或”的关系；
2、本申请实施例中的主节点“MN”可以为双/多连接场景下的主网络节点实体MN或者主网络节点实体MN下的主服务小区；本申请实施例中的辅节点“SN”为双/多连接场景下的辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
本申请实施例描述的应用场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着新应用场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。其中，在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在无线通信中，存在一个主节点MN(Master Node)和一个/多个辅节点SN(Secondary Node)，MN与SN节点均可以为支持长期演进/4G网络-长期演进5G网络LTE/e-LTE/NR的基站节点。在无线通信中，存在一个主节点MN以及一个辅节点SN的双连接(如图1所示)，和一个MN以及多个SN的多连接场景；
用户终端UE在传输数据时，可以在空口同时连接到MN以及SN，MN与SN之间通过Xn-C接口(对于5GC核心网)或者X2-C接口(对于EPC核心网)接口相连接，通过双/多连接数据发送，能够提升UE的数据量/吞吐量，满足高速率的业务传输需求。
上述双/多连接场景下，主要通过以下三种方式对用户终端UE连接的SN 进行添加或更换：
1)MN发起SN添加过程；
2)MN发起SN改变过程；
3)SN发起的SN改变过程。
上述三个场景中，对辅节点添加/更换的具体过程如下：
场景一：主节点MN发起的SN添加
当网络决定给用户终端UE添加/更换一个辅节点SN节点或者针对现有的SN节点进行修改辅小区组SCG(Secondary Cell Group)无线资源配置时，如果MN想要新增一个SN节点，则需要发起SN添加过程。
如图2所示为连接到5G核心网5GC的多无线接入技术RAT(Radio Acess Technology)双连接MR-DC的SN添加过程。
在图2中，UPF为用户面功能的简称，其英文全称为User Plane Function；AMF为接入与移动性管理功能的简称，其英文全称为Access and Mobility Management Function；RRC为无线资源控制的简称，其英文全称为Radio Resource Control；PDCP为分组数据汇聚协议的简称，其英文全称为Packet Data Convergence Protocol；ACK为确认消息的简称，其英文全称为Acknowledgement。
具体的SN添加过程如下：
步骤1)MN向SN节点发送SN添加请求；
步骤2)SN向MN回复SN添加请求确认消息ACK，其中ACK中携带SN无线资源控制RRC(Radio Resource Control)配置；
步骤3)MN向UE发送RRC重配置消息，RRC重配置消息携带SN RRC配置；
步骤4)UE给MN回复RRC重配置完成消息，RRC重配置完成消息中携带SN RRC重配置完成信息；
步骤5)MN向SN发送相关重配置完成消息，重配置完成消息中携带SN RRC重配置完成信息；
步骤6)UE与SN之间执行随机接入流程；
步骤7～9)MN与SN以及核心网节点间的分组数据汇聚协议PDCP(Packet Data Convergence Protocol)包序列号状态传递、数据前传以及路径转换等流程。
场景二：MN发起的SN改变
若MN想要更换一个已有的原SN节点，则需要发起SN改变过程。如连接到4G核心网EPC的双连接EN-DC(E-UTRA-NR)的MN发起的SN改变过程，其过程示意流程图如图3所示，具体包括：
步骤1)MN向目标辅节点T-SN发送SN添加请求；
步骤2)T-SN向MN回复SN添加请求ACK，SN添加请求ACK中携带SN RRC配置信息；
步骤3a)MN向原辅节点S-SN发送SN释放请求；
应当理解的是，上述原辅节点S-SN为上述MN发起的SN改变前，与UE建立连接的SN；
步骤3b)S-SN向MN回复SN释放请求ACK；
步骤4)MN向UE发送RRC重配置消息，RRC重配置完成消息中携带T-SN相关的配置参数；
步骤5)UE向MN回复RRC重配置完成消息，RRC重配置完成消息中携带T-SN配置完成相关信息；
步骤6)MN向T-SN发送SN重配置完成消息，RRC重配置完成消息中携带T-SN配置完成相关信息；
步骤7)UE与T-SN间执行随机接入过程；
步骤8～15)基站节点间的数据包序列号状态传递、数据前传以及与核心网节点间的路径转换等流程；
步骤16)MN向S-SN指示释放UE上下文。
场景三：SN发起的SN改变
若SN想要更换自身SN节点与UE的连接为另一个SN，会发起SN改变过程，如连接到EPC的EN-DC的SN发起的SN改变过程，如图4所示，具 体包括：
步骤0)原辅节点S-SN向MN发起SN改变请求；
应当理解的是，上述原辅节点S-SN为上述SN发起的SN改变前，与上述UE连接的SN；
步骤1)MN向目标辅节点T-SN发送SN添加请求；
步骤2)T-SN向MN回复SN添加请求ACK(携带SN RRC配置)；
步骤3)MN向UE发送RRC重配置消息，RRC重配置消息携带T-SN相关的配置参数；
步骤4)UE向MN回复RRC重配置完成消息，RRC重配置完成消息携带T-SN配置完成相关信息；
步骤5)MN向S-SN发送SN改变确认；
步骤6)MN给T-SN发送SN重配置完成消息。
步骤7)UE与T-SN间的随机接入过程；
步骤8～15)基站节点间的数据包序列号状态传递、数据前传以及与核心网节点间的路径转换等流程；
步骤16)MN向S-SN指示释放UE上下文。
上述三种场景下，UE对辅节点添加/更换过程消耗时间长，且会造成数据发送延迟，且双/多连接建立时间过长导致使用双连接传输数据的概率降低；
因此本申请实施例一种基于双/多连接的辅节点添加/更换的方法及设备。
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
实施例一：
如图5所示，基于上述场景一、场景二和场景三，本实施例提供一种应 用于双/多连接的辅助节点添加/更换的系统，该系统包括：
一个主节点MN501，用于向一个/多个辅节点SN503预先发送SN添加请求，接收上述一个/多个SN返回的配置信息，并将上述一个/多个SN的配置信息发送给用户终端UE502，获取UE基于对上述一个/多个SN进行测量评估后，确定的满足连接条件的SN。
UE502，用于接收MN501发送的一个/多个辅节点SN的配置信息，根据上述一个/多个辅节点SN的配置信息，对上述一个/多个SN503进行测量评估，确定满足连接条件的SN，向上述MN501通知上述满足连接条件的SN，并向上述满足连接条件的SN发起随机接入过程。
一个/多个辅节点SN503，用于接收MN501预先发送SN添加请求，并向上述MN返回配置信息，在接收UE502发起的随机接入过程时，与上述UE建立随机连接。
基于上述辅助节点添加/更换的系统，本实施例针对上述场景一、场景二和场景三的双/多连接的辅助节点添加/更换，提出以下辅助节点添加/更换方案，以提高双/多连接的辅助节点添加/更换的效率。
作为一种可选的实施方式，上述主节点MN为主网络节点实体MN或者主网络节点实体MN下的主服务小区，上述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
如图6所示，以下结合上述主节点MN、辅节点SN和用户终端UE的交互过程，说明上述辅助节点添加/更换方案的具体流程：
步骤1)MN向一个/多个辅节点SN预先发送SN添加请求；
作为一种可选的实施方式，上述MN可以基于与UE已经有连接的原SN发送的SN改变请求，向一个/多个辅节点SN发送SN添加请求。
上述MN可以在收到UE发送前期测量结果后或未收到UE发送前期测量结果时，向一个/多个辅节点SN发送SN添加请求；
在MN收到UE发送的前期测量之前，需要MN给UE发送前期测量的相关配置信息，上述前期测量的相关配置信息可以但不局限于通过专用信令或 者系统信息发给UE，上述专用信令可以但不局限于是RRC重配置信令，或者RRC释放信令。
上述前期测量可以但不局限于为连接态的无线资源管理RRM(Radio Resource Management)测量，或者UE进入IDLE空闲态/INACTIVE非激活态的测量。
上述前期测量结果的内容可以但不局限于包括针对多个SN的测量结果，上述前期测量结果的内容参数可以但不局限于包括：
上述SN的载波频点信息和SN下的小区的小区标识信息；
针对上述SN的服务小区，和/或上述SN的服务小区的邻小区的参考信号接收功率RSRP(Reference Signal Receiving Power)，参考信号接收质量RSRQ(Reference Signal Receiving Quality)，信号与干扰和噪声比SINR(Signal to Interference&Noise Ratio)的测量结果；
上述SN对应的Beam级(同步块SSB(Synchronization Signal/PBCH Block)/信道状态信息参考信号CSI-RS(Channel State Information-Reference Signal))测量结果。
步骤2)一个/多个SN向MN返回配置信息；
作为一种可选的实施方式，上述SN通过SN添加请求ACK向MN返回配置信息；
上述SN配置可以但不局限于依据各SN的不同而配置不同内容，或者由SN节点之间的协商/共享而配置相同的内容(例如随机接入信道RACH(Random Access Channel)配置)；
步骤3)MN接收上述一个/多个SN返回的配置信息，并将上述一个/多个SN的配置信息发送给用户终端UE；
作为一种可选的实施方式，MN接收上述一个/多个SN通过添加请求确认消息返回的配置信息；
作为一种可选的实施方式，MN可以但不局限于按照如下任一方法，通过RRC重配置消息，将上述一个/多个SN的配置信息发送给用户终端UE：
a)针对上述一个/多个SN的配置信息中的每个SN的配置信息，通过单独发送RRC重配置消息的发送给UE；
b)针对一个/多个SN的配置信息进行抽取或单独级联后，通过一条RRC重配置消息发送给UE。
上述SN的配置信息可以但不局限于包括如下任一或任多内容：
a)SN内的承载配置信息；
b)SN安全信息；
c)SN接入信息，例如RACH配置；
d)UE接入SN需要满足的条件。
步骤4)UE接收MN发送的一个/多个SN的配置信息；
作为一种可选的实施方式，UE接收MN发送的RRC重配置消息，获取MN发送的一个/多个SN的配置信息；
作为一种可选的实施方式，UE接收MN针对上述一个/多个SN的配置信息中的每个SN的配置信息，单独发送的RRC重配置消息；或者接收MN针对一个/多个SN的配置信息进行抽取或单独级联后，发送的一条RRC重配置消息。
作为一种可选的实施方式，UE接收MN发送的RRC重配置消息后，直接向上述MN发送对应上述一个/多个SN的配置信息的RRC重配置完成消息；
作为另一种可选实施方式，上述MN从UE接收到对应上述一个/多个SN的配置信息的RRC重配置完成消息之后，向上述一个/多个SN发送SN重配置完成消息。
作为一种可选的实施方式，上述MN在将上述一个/多个SN的配置信息通过RRC重配置消息发送给UE后，接收上述UE向满足连接条件的SN发起随机接入过程后，发送的RRC重配置完成消息；
步骤5)UE根据上述一个/多个辅节点SN的配置信息，对上述一个/多个SN进行测量评估，确定满足连接条件的SN；
作为一种可选的实施方式，上述连接条件包括如下任一或任多个条件：
a)SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
b)SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
c)用于对SN测量评估计时的定时器超时；
如在本实施例中，定时器超时后直接针对完成SN配置准备的测量结果最优的SN发起连接建立，或者针对一个/多个SN测量结果满足预定门限的时间达到定时器长度的时间后发起该SN的连接建立。
作为一种可选的实施方式，上述测量量包括如下任一或任多个测量量：
a)参考信号接收功率RSRP；
b)参考信号接收质量RSRQ；
c)信号与干扰和噪声比SINR。
在本实施例中，当对SN下小区测量的测量量RSRP、RSRQ、SINR任一/任多的测量结果值，高于对指定小区测量的对应测量量RSRP、RSRQ、SINR的测量结果时，确定SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果，其中，本领域的技术人员可根据实际需求对上述SN下小区进行任一/任多测量量的测量；
步骤6)UE向上述满足连接条件的SN发起随机接入过程。
在本处，假设满足接条件的SN为SN1和SN2，应当理解的是，上述SN1和SN2可以是满足连接条件的任一个/任多个SN；
作为一种可选的实施方式，UE在确定满足连接条件的SN后，可以但不局限于通过如下方式，向上述MN通知上述满足连接条件的SN：
通过向MN发送的RRC重配置完成消息，向上述MN通知上述满足连接条件的SN；或者
通过单独向MN发送的SN接入请求/通知/指示消息，向所述MN通知上述满足连接条件的SN；
上述SN接入请求/通知/指示可以但不局限于包含满足条件的SN标识或者该SN下UE所接小区的标识。
作为一种可选的实施方式，MN在将上述一个/多个SN的配置信息通过RRC重配置消息发送给UE后，UE确定满足连接条件的SN后，直接向上述MN发送对应上述满足连接条件的SN的配置信息的RRC重配置完成消息；
对应地，上述MN接收上述UE发送的对应上述满足连接条件的SN的配置信息的RRC重配置完成消息；
作为一种可选的实施方式，上述UE在向上述满足连接条件的SN发起随机接入过程后，上述SN向上述MN发送指示上述SN与上述UE建立随机接入完成的指示信息；
对应地，上述MN接收上述满足连接条件的SN发送的，指示上述SN与上述UE建立随机接入完成的指示信息。
对应地，作为一种可选的实施方式，上述MN确定上述UE与满足连接条件的SN建立连接后，释放未被UE请求建立连接的SN。
步骤7)对应上述步骤6)，MN获取UE基于对上述一个/多个SN进行测量评估后，确定的满足连接条件的SN；
对应上述上述步骤6)，作为一种可选的实施方式，上述MN通过UE发送的RRC重配置完成消息，获取上述确定的满足连接条件的SN；或者
通过UE单独发送的SN接入请求/通知/指示消息，获取上述确定的满足连接条件的SN；
作为一种可选的实施方式，上述MN通过UE发送的RRC重配置完成消息，获取上述确定的满足连接条件的SN之后，向上述满足连接条件的SN，发送SN重配置完成消息；
作为一种可选的实施方式，上述MN还可以接收满足连接条件的SN在与UE建立连接后，通知的上述确定的满足连接条件的SN；
对应的，上述满足连接条件的SN在与上述UE建立连接后，将满足连接条件的SN通知给MN；
作为一种可选的实施方式，上述MN接收上述UE与上述满足连接条件的SN发起随机接入过程后，发送的对应上述满足连接条件的SN的配置信息 的RRC重配置完成消息；上述MN在接收上述UE发送的对应上述满足连接条件的SN的配置信息的RRC重配置完成消息之后，向之前与UE已经有连接的原SN发送SN改变确认消息。
作为一种可选的实施方式，上述MN在收到UE发送的上述UE与满足连接条件的SN建立连接的指示后，或收到满足连接条件的SN发送的与上述UE建立连接的指示后，向之前与UE已经有连接的原SN发送SN改变确认消息。
以下给出上述双/多连接的辅助节点添加/更换方案的几种具体实施方式：
具体实施方式1：
作为一种可选的实施方式，MN可在接收到UE发送的前期测量结果后，向多个SN发起SN准备过程，如图7所示，具体包括：
步骤0)基于UE上报的前期测量结果，向一个/多个辅节点SN发送SN添加请求；
上述步骤0是一个可选择的步骤(图7中以虚线标示)，本领域的技术人员可根据实际需求选择是否实施。
步骤1)MN向多个SN发起SN准备过程；
上述发起SN准备过程可以在收到UE发送前期测量结果后进行，也可以在未收到UE发送前期测量结果进行。
步骤2a/b/c)MN向多个SN发送SN添加请求；
步骤3a/b/c)多个SN向MN反馈SN添加请求ACK，分别携带各自SN的配置信息；
步骤4)MN收到一个/多个SN发来的SN添加请求ACK后，向UE发送RRC重配置消息；
步骤5)MN接收UE发送的RRC重配置完成消息；
步骤6a/b/c)MN向UE成功保存/应用配置的各SN发送SN重配置完成消息，完成一个/多个SN的SN配置准备过程。
此时，UE针对完成SN准备过程的SN已经配置了协议栈，且已准备好 与上述一个/多个SN建立连接。
步骤7)UE根据测量结果，评估认为辅节点SN1满足连接条件，并决定与SN1建立无线连接；
应当理解的是，本实施例中为SN1，实际上可能为其他SN或者多个SN；
上述满足上述连接条件的可能是完成SN配置准备过程的多个SN中的一个或多个；
应当理解的是，上述步骤6a/b/c)和步骤7)无先后顺序，本领域的技术人员可根据实际需求设定上述步骤6a/b/c)和步骤7的先后顺序。
步骤8)UE向MN发送满足连接条件的SN的SN接入请求/通知/指示；
可选地，上述SN接入请求/通知/指示可以但不局限于为RRC SN接入消息。
步骤9)UE向满足连接条件的SN发起随机接入流程。
应当理解的是，上述步骤8)与步骤9)的顺序可调换，即UE可以在完成与SN的随机接入后，向MN发送针对SN的SN接入请求/通知/指示，也可直接向MN发送针对SN的SN接入请求/通知/指示。
上述具体实施方式1的流程可以用于SN添加，或者SN变换，即：
1)针对SN添加过程，MN给UE准备多个可能的SN，当UE评估认为某一个/多个SN满足连接条件时给MN以指示，并接入该SN，之后MN可以请求将传输的数据分流到该SN；
2)针对SN改变过程，MN给UE准备多个可能的目标SN，当UE评估认为某一个/多个目标SN满足既定条件时，给MN以指示，并接入该目标SN。之后MN可以请求将传输的数据分流到该目标SN，并请求删除原SN与上述UE的连接，或者原SN保存的该UE上下文信息。
上述具体实施方式1中的流程，由于SN在UE进行测量评估前已经完成预先配置准备过程，当一个/多个SN下的小区的用户服务质量变好之后，UE可以以很快的速度直接接入SN，并使用SN的资源接收/传输数据。
具体实施方式2：
具体实施方式2为在上述SN完成配置准备过程后，针对满足条件的SN，区别于具体实施方式1的另一种向MN通知的方法，如图8所示，具体包括：
步骤0～6)与上述具体实施方式1中的步骤0～6)完全一致；
步骤7)UE根据测量结果，评估认为SN1满足连接条件，并决定与SN1建立无线连接；
应当理解的是，本具体实施方式中的SN1，实际上可能为其他SN或者多个SN；
步骤8)UE向满足条件的SN发起随机接入，建立无线连接；
步骤9)之前已完成SN配置准备过程的SN接入该UE后，上述SN向MN通知已接入该UE。
具体实施方式3：
如图9所示，针对于MN发起的SN添加/改变，与上述具体实施方式1相同，MN可在接收到UE发送的前期测量结果后，向多个SN发起SN配置准备过程，之后UE选择SN建立连接的过程如下：
步骤0～4)与上述具体实施方式1中步骤0～4)完全一致；
步骤5)UE根据测量结果，评估认为SN2满足连接条件，并决定与SN2建立无线连接；
应当理解的是，本实施例中为SN2，实际上可能为其他SN或者多个SN；上述满足连接条件的可能是完成SN配置准备过程的多个SN中的一个/多个。
步骤6)UE向MN发送RRC重配置完成消息；
上述RRC重配置完成消息包括针对满足连接条件的一个/多个SN的SN接入请求/通知/指示。
步骤7)MN向UE指示要求建立连接的一个/多个SN发送SN重配置完成消息；
步骤8)UE向满足连接条件的一个/多个SN发起随机接入流程；
应当理解的是，上述步骤8)与上述步骤6)无固定的先后关系，本领域的技术人员可根据实际需求设置。
上述具体实施方式3的流程可以可以用于SN添加，或者SN变换，包括：
1)针对SN添加过程，MN给UE准备多个可能的SN，当UE评估认为某一个/多个SN满足连接条件时给MN以指示，并接入该SN，之后MN可以请求将传输的数据分流到该SN；
2)针对SN改变过程，MN给UE准备多个可能的目标SN，当UE评估认为某一个/多个目标SN满足连接条件时，给MN以指示，并接入该目标SN，后续MN可以请求将传输的数据分流到该目标SN，并请求删除原SN。
上述具体实施方式3中的流程，由于SN已经确定并预先完成SN配置准备过程，当一个/多个SN下的小区的用户服务质量变好之后，UE可以以很快的速度接入SN并使用SN的资源收发数据。
具体实施方式4：
MN向多个SN发起SN添加过程，UE按照连接条件选择SN时，当SN感觉自身无法满足UE数据传输需求，或者出现更优的SN可以为UE提供服务时，可以由SN发起SN改变流程，如图10所示，具体包括：
步骤1)原SN向MN发送SN改变请求；
上述SN改变请求的内容可以但不局限于包括：
一个/多个目标辅节点T-SN的标识信息，载波频点信息，小区标识信息；
SCG/SN配置信息；
针对服务小区，和/或邻小区的RSRP，RSRQ，SINR测量结果；Beam级(SSB/CSI-RS)测量结果。
步骤2a/b/c)MN收到原S-SN发来的请求后进行决策，可以向多个SN发起SN添加请求；
其中，上述S-SN可能是一个/多个；
步骤3a/b/c：多个SN向MN反馈SN添加请求ACK，分别携带各自SN的配置信息；
上述SN配置可以但不局限于依据各SN的不同而配置不同内容，或者由SN节点之间的协商/共享而配置相同的内容(例如RACH配置)；
步骤4)与上述具体实施方式1/具体实施方式2/具体实施方式3中的步骤4)完全一致，为MN收到一至多个SN发来的反馈之后，向UE发送RRC重配置消息；
步骤X与步骤Z：与上述具体实施方式1/具体实施方式2/具体实施方式3中的MN发送RRC重配置消息之后的步骤一致；
步骤Y：步骤4)(RRC重配置消息)之后的RRC重配置完成、MN向SN指示SN重配置完成、UE选择满足条件的SN、UE与SN的随机接入过程、以及向MN通知UE与SN建立连接的步骤，可以使用上述具体实施方式1/具体实施方式2/具体实施方式3中的步骤。
对于“SN发起的SN改变”特有的“MN向原SN发送SN改变确认消息”，针对复用的不同的上述具体实施方式1/具体实施方式2/具体实施方式3，需要放在不同的步骤之间，具体如下：
对于上述具体实施方式1：在步骤8之后，MN收到UE发来的UE与SN建立连接的指示后，可向原SN发送SN改变确认；
对于上述具体实施方式2：在步骤9之后，MN收到SN发来的UE与SN建立连接的指示后，可向原SN发送SN改变确认；
对于上述具体实施方式3：在收到步骤6的RRC重配置完成消息之后，MN可向原SN发送SN改变确认。
具体实施方式5：MN向UE未请求SN发起连接释放
UE与完成SN配置准备过程的任一或任多个SN建立了连接之后，作为一种可选的实施方式，MN可以决定是否向其他未与UE建立连接的SN发起释放过程。该过程对于前面所有的具体实施方式均适用，如图11所示，具体包括：
步骤0)UE向MN发送SN接入请求/通知/指示；
在具体实施方式5中，该步骤可以是上述具体实施方式1中的SN接入请求/通知/指示(步骤8)，或者上述具体实施方式3中的RRC重配置完成消息(步骤6)，或者针具体实施方式2中，UE与满足条件的SN完成随机接入之 后，由该SN向MN通知UE与SN已建立连接(SN接入指示)；
步骤1)UE向满足连接条件的SN2发起随机接入过程；
在具体的实施中，上述步骤1可能在步骤0之前，即允许UE与满足连接条件的SN完成随机接入后，再由UE或上述SN向MN发送SN接入指示；
步骤2)MN决定是否删除或保留其他SN配置(本具体实施方式中为SN1与SN3)；
上述步骤2为可选择的步骤，本领域的技术人员可根据实际需求选择是否实施上述步骤2；
步骤3a/c)若MN决定删除其他SN配置，则向对应未与UE建立连接的SN发送SN释放请求，或者UE上下文释放请求/指示，SN释放配置/上下文后可能给MN回复释放确认反馈
上述步骤3a/c)为可选择的步骤，本领域的技术人员可根据实际需求选择是否实施。
应当理解的是，针对不同的无线通信的系统(如长期演进LTE/4G无线连接Elte/5G无线连接NR)或场景(如连接至EPC的双连接EN-DC(E-UTRA-NR-Dual Connectivity)，NE-DC(NR-E-UTRAN-Dual Connectivity)，NR-NR DC(NR-NR-Dual Connectivity))等，上述主节点MN和辅节点SN的名称可能有所不同(如将辅节点SN称为SN/SgNB/SeNB等)，节点间的信令名称也可能会有差异，本实施例提供的具体实施方式1至具体实施方式5只是举例说明，一切基于本申请提高的基于双/多连接的辅节点添加/更换方法原理的实施方式，均属于本申请申请保护的范围。
实施例二：
如图12所示，基于相同的发明构思，本实施例提供一种基于双/多连接场景的辅节点添加/更换方法的终端设备，该设备包括：处理器1201、存储器1202和收发机1203。
处理器1201负责管理总线架构和通常的处理，存储器1202可以存储处 理器1201在执行操作时所使用的数据。收发机1203用于在处理器1201的控制下接收和发送数据。
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1201代表的一个或多个处理器和存储器1202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。处理器1201负责管理总线架构和通常的处理，存储器1202可以存储处理器1201在执行操作时所使用的数据。
本申请实施例揭示的流程，可以应用于处理器1201中，或者由处理器1201实现。在实现过程中，信号处理流程的各步骤可以通过处理器1201中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1201可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1202，处理器1201读取存储器1202中的信息，结合其硬件完成信号处理流程的步骤。
其中，上述存储器1202用于存储上述处理器1201可执行的程序，上述处理器1201用于读取上述存储器1201中的程序并执行如下步骤：
接收主节点MN发送的一个/多个辅节点SN的配置信息；
根据上述一个/多个辅节点SN的配置信息，对上述一个/多个SN进行测量评估，确定满足连接条件的SN；
向上述满足连接条件的SN发起随机接入过程。
可选地，上述主节点MN为主网络节点实体MN或者主网络节点实体MN 下的主服务小区，上述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
可选地，上述处理器具体用于，通过向MN发送的RRC重配置完成消息，向上述MN通知上述满足连接条件的SN；或者
通过单独向MN发送的SN接入请求/通知/指示消息，向上述MN通知所述满足连接条件的SN。
可选地，上述连接条件包括如下任一或任多个条件：
SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
用于对SN测量评估计时的定时器超时。
在一种可能的实现方式中，上述测量量包括如下任一或任多个测量量：
参考信号接收功率RSRP；
参考信号接收质量RSRQ；
信号与干扰和噪声比SINR。
可选地，上述处理器1201具体用于，接收MN发送的RRC重配置消息，获取MN发送的一个/多个SN的配置信息。
可选地，上述处理器1201具体用于，接收MN针对上述一个/多个SN的配置信息中的每个SN的配置信息，单独发送的RRC重配置消息；或者
接收MN针对一个/多个SN的配置信息进行抽取或单独级联后，发送的一条RRC重配置消息。
可选地，上述处理器1201还用于，接收主节点发送的RRC重配置消息后，直接向上述MN发送对应上述一个/多个SN的配置信息的RRC重配置完成消息；或者
确定满足连接条件的SN后，向上述MN发送对应上述满足连接条件的SN的配置信息的RRC重配置完成消息。
如图13所示，基于相同的发明构思，本实施例还提供一种基于双/多连接 场景的辅节点添加/更换方法的网络侧设备，该设备包括：处理器1301、存储器1302和收发机1303。
处理器1301负责管理总线架构和通常的处理，存储器1302可以存储处理器1301在执行操作时所使用的数据。收发机1303用于在处理器1301的控制下接收和发送数据。
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1301代表的一个或多个处理器和存储器1302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。处理器1301负责管理总线架构和通常的处理，存储器1302可以存储处理器1301在执行操作时所使用的数据。
本申请实施例揭示的流程，可以应用于处理器1301中，或者由处理器1301实现。在实现过程中，信号处理流程的各步骤可以通过处理器1301中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1301可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1302，处理器1301读取存储器1302中的信息，结合其硬件完成信号处理流程的步骤。
其中，上述存储器1302用于存储上述处理器1301可执行的程序，上述处理器1301用于读取上述存储器1301中的程序并执行如下步骤：
向一个/多个辅节点SN预先发送SN添加请求；
接收上述一个/多个SN返回的配置信息，并将上述一个/多个SN的配置 信息发送给用户终端UE。
可选地，上述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
可选地，上述处理器还用于，获取UE基于对上述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者
接收满足连接条件的SN在与UE建立连接后，通知的上述确定的满足连接条件的SN。
可选地，上述处理器1301还用于，确定上述UE与满足连接条件的SN建立连接后，释放未被UE请求建立连接的SN。
在一种可能的实现方式中，上述连接条件包括如下任一或任多个条件：
SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
用于对SN测量评估计时的定时器超时。
在一种可能的实现方式中，上述测量量包括如下任一或任多个测量量：
参考信号接收功率RSRP；
参考信号接收质量RSRQ；
信号与干扰和噪声比SINR。
可选地，上述处理器1301具体用于，通过UE发送的RRC重配置完成消息，获取上述确定的满足连接条件的SN；或者
通过UE单独发送的SN接入请求/通知/指示消息，获取上述确定的满足连接条件的SN。
可选地，通过UE发送的RRC重配置完成消息，获取上述确定的满足连接条件的SN之后，上述处理器1301还用于：
向上述满足连接条件的SN，发送SN重配置完成消息。
可选地，上述处理器还用于，获取UE基于对上述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者接收满足连接条件的SN在与UE 建立连接后，通知的上述确定的满足连接条件的SN之后，向之前与UE已经有连接的原SN发送SN改变确认消息
可选地，上述处理器1301具体用于，基于UE上报的前期测量结果，向一个/多个辅节点SN发送SN添加请求。
在一种可能的实现方式中，上述处理器具体用于：
基于与UE已经有连接的原SN发送的SN改变请求，向一个/多个辅节点SN发送SN添加请求。
可选地，上述处理器1301具体用于，接收上述一个/多个SN通过添加请求确认消息返回的配置信息；
通过RRC重配置消息，将上述一个/多个SN的配置信息发送给用户终端UE。
可选地，上述处理器1301具体用于，针对上述一个/多个SN的配置信息中的每个SN的配置信息，通过单独发送RRC重配置消息的发送给UE；或者
针对一个/多个SN的配置信息进行抽取或单独级联后，通过一条RRC重配置消息发送给UE。
可选地，上述处理器1301还用于，接收上述UE收到RRC重配置消息后，直接发送的对应上述一个/多个SN的配置信息的RRC重配置完成消息；或者
接收上述UE确定满足连接条件的SN后，发送的对应上述满足连接条件的SN的配置信息的RRC重配置完成消息；
可选地，上述处理器还用于，接收上述满足连接条件的SN发送的，指示上述SN与上述UE建立随机接入完成的指示信息。
在一种可能的实现方式中，接收上述UE收到RRC重配置消息后，直接发送的对应上述一个/多个SN的配置信息的RRC重配置完成消息之后，上述处理器1301还用于：
向上述一个/多个SN发送SN重配置完成消息。
可选地，接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息之后，上述处理器1301还 用于：
向之前与UE已经有连接的原SN发送SN改变确认消息。
实施例三：
如图14所示，基于相同的发明构思，本实施例提供一种基于双/多连接场景的辅节点添加/更换方法的终端装置，该装置包括：
SN配置信息接收单元1401，用于接收主节点MN发送的一个/多个辅节点SN的配置信息；
连接条件判断单元1402，用于根据上述一个/多个辅节点SN的配置信息，对上述一个/多个SN进行测量评估，确定满足连接条件的SN；
连接建立单元1403，向上述满足连接条件的SN发起随机接入过程。
可选地，上述主节点MN为主网络节点实体MN或者主网络节点实体MN下的主服务小区，上述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
可选地，上述连接建立单元还用于，通过向MN发送的RRC重配置完成消息，向上述MN通知所述满足连接条件的SN；或者
通过单独向MN发送的SN接入请求/通知/指示消息，向上述MN通知所述满足连接条件的SN。
可选地，上述连接条件包括如下任一或任多个条件：
SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
用于对SN测量评估计时的定时器超时。
可选地，上述测量量包括如下任一或任多个测量量：
参考信号接收功率RSRP；
参考信号接收质量RSRQ；
信号与干扰和噪声比SINR。
可选地，上述SN配置信息接收单元，用于接收MN发送的RRC重配置消息，获取MN发送的一个/多个SN的配置信息。
可选地，上述SN配置信息接收单元，用于接收MN针对上述一个/多个SN的配置信息中的每个SN的配置信息，单独发送的RRC重配置消息；或者
接收MN针对一个/多个SN的配置信息进行抽取或单独级联后，发送的一条RRC重配置消息。
可选地，上述连接建立单元，还用于接收主节点发送的RRC重配置消息后，直接向上述MN发送对应上述一个/多个SN的配置信息的RRC重配置完成消息；或者
确定满足连接条件的SN后，向上述MN发送对应上述满足连接条件的SN的配置信息的RRC重配置完成消息。
如图15所示，基于相同的发明构思，本实施例还提供一种基于双/多连接场景的辅节点添加/更换方法的网络侧装置，该装置包括：
SN添加请求发送单元1501，用于向一个/多个辅节点SN预先发送SN添加请求；
SN配置信息转发单元1502，用于接收上述一个/多个SN返回的配置信息，并将上述一个/多个SN的配置信息发送给用户终端UE。
可选地，上述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
可选地，上述装置还包括：
连接确定单元1503，获取UE基于对上述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者
接收满足连接条件的SN在与UE建立连接后，通知的上述确定的满足连接条件的SN。
可选地，上述连接确定单元，还用于确定上述UE与满足连接条件的SN建立连接后，释放未被UE请求建立连接的SN。
可选地，上述连接条件包括如下任一或任多个条件：
SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
用于对SN测量评估计时的定时器超时。
在一种可能的实现方式中，上述测量量包括如下任一或任多个测量量：
参考信号接收功率RSRP；
参考信号接收质量RSRQ；
信号与干扰和噪声比SINR。
可选地，上述连接确定单元，用于通过UE发送的RRC重配置完成消息，获取上述确定的满足连接条件的SN；或者
通过UE单独发送的SN接入请求/通知/指示消息，获取上述确定的满足连接条件的SN。
可选地，通过UE发送的RRC重配置完成消息，获取上述确定的满足连接条件的SN之后，上述连接确定单元，还用于向上述满足连接条件的SN，发送SN重配置完成消息。
可选地，上述连接确定单元还用于，获取UE基于对上述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者接收满足连接条件的SN在与UE建立连接后，通知的上述确定的满足连接条件的SN之后，向之前与UE已经有连接的原SN发送SN改变确认消息。
可选地，上述SN添加请求发送单元用于，基于UE上报的前期测量结果，向一个/多个辅节点SN发送SN添加请求。
可选地，上述处理器具体用于：
基于与UE已经有连接的原SN发送的SN改变请求，向一个/多个辅节点SN发送SN添加请求。
可选地，上述SN配置信息转发单元用于，接收上述一个/多个SN通过添加请求确认消息返回的配置信息；
通过RRC重配置消息，将上述一个/多个SN的配置信息发送给用户终端 UE。
可选地，上述SN配置信息转发单元用于，针对上述一个/多个SN的配置信息中的每个SN的配置信息，通过单独发送RRC重配置消息的发送给UE；或者
针对一个/多个SN的配置信息进行抽取或单独级联后，通过一条RRC重配置消息发送给UE。
可选地，上述连接确定单元还用于，接收上述UE收到RRC重配置消息后，直接发送的对应上述一个/多个SN的配置信息的RRC重配置完成消息；或者
接收上述UE确定满足连接条件的SN后，发送的对应上述满足连接条件的SN的配置信息的RRC重配置完成消息。
可选地，上述连接确定单元还用于，接收上述满足连接条件的SN发送的，指示上述SN与上述UE建立随机接入完成的指示信息。
可选地，接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息之后，上连接确定单元还用于，向上述一个/多个SN发送SN重配置完成消息。
可选地，接收上述UE与上述满足连接条件的SN发起随机接入过程后，发送的对应上述满足连接条件的SN的配置信息的RRC重配置完成消息之后，上连接确定单元还用于，向之前与UE已经有连接的原SN发送SN改变确认消息。
实施例四：
本申请实施例提供一种计算机可读非易失性存储介质，包括程序代码，当上述程序代码在计算终端上运行时，上述程序代码用于使上述计算终端执行上述本申请实施例一提供的方法的步骤。
以上参照示出根据本申请实施例的方法、装置(系统)和/或计算机程序 产品的框图和/或流程图描述本申请。应理解，可以通过计算机程序指令来实现框图和/或流程图示图的一个块以及框图和/或流程图示图的块的组合。可以将这些计算机程序指令提供给通用计算机、专用计算机的处理器和/或其它可编程数据处理装置，以产生机器，使得经由计算机处理器和/或其它可编程数据处理装置执行的指令创建用于实现框图和/或流程图块中所指定的功能/动作的方法。
相应地，还可以用硬件和/或软件(包括固件、驻留软件、微码等)来实施本申请。更进一步地，本申请可以采取计算机可使用或计算机可读存储介质上的计算机程序产品的形式，其具有在介质中实现的计算机可使用或计算机可读程序代码，以由指令执行系统来使用或结合指令执行系统而使用。在本申请上下文中，计算机可使用或计算机可读介质可以是任意介质，其可以包含、存储、通信、传输、或传送程序，以由指令执行系统、装置或设备使用，或结合指令执行系统、装置或设备使用。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (54)

  1. 一种基于双/多连接的辅节点添加/更换方法，其特征在于，该方法包括：
    接收主节点MN发送的一个/多个辅节点SN的配置信息；
    根据所述一个/多个辅节点SN的配置信息，对所述一个/多个SN进行测量评估，确定满足连接条件的SN；
    向所述满足连接条件的SN发起随机接入过程。
  2. 如权利要求1所述的方法，其特征在于，所述主节点MN为主网络节点实体MN或者主网络节点实体MN下的主服务小区，所述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
  3. 如权利要求1所述的方法，其特征在于，确定满足连接条件的SN之后，还包括：
    通过向MN发送的RRC重配置完成消息，向所述MN通知所述满足连接条件的SN；或者
    通过单独向MN发送的SN接入请求/通知/指示消息，向所述MN通知所述满足连接条件的SN。
  4. 如权利要求1所述的方法，其特征在于，所述连接条件包括如下任一或任多个条件：
    SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
    SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
    用于对SN测量评估计时的定时器超时。
  5. 如权利要求4所述的方法，其特征在于，所述测量量包括如下任一或任多个测量量：
    参考信号接收功率RSRP；
    参考信号接收质量RSRQ；
    信号与干扰和噪声比SINR。
  6. 如权利要求1所述的方法，其特征在于，接收主节点MN发送的一个/多个辅节点SN的配置信息，包括：
    接收MN发送的RRC重配置消息，获取MN发送的一个/多个SN的配置信息。
  7. 如权利要求6所述的方法，其特征在于，接收主节点发送的RRC重配置消息，包括：
    接收MN针对所述一个/多个SN的配置信息中的每个SN的配置信息，单独发送的RRC重配置消息；或者
    接收MN针对一个/多个SN的配置信息进行抽取或单独级联后，发送的一条RRC重配置消息。
  8. 如权利要求6所述的方法，其特征在于，还包括：
    接收主节点发送的RRC重配置消息后，直接向所述MN发送对应所述一个/多个SN的配置信息的RRC重配置完成消息；或者
    确定满足连接条件的SN后，向所述MN发送对应所述满足连接条件的SN的配置信息的RRC重配置完成消息。
  9. 一种基于双/多连接的辅节点添加/更换方法，其特征在于，该方法包括：
    向一个/多个辅节点SN预先发送SN添加请求；
    接收所述一个/多个SN返回的配置信息，并将所述一个/多个SN的配置信息发送给用户终端UE。
  10. 如权利要求9所述的方法，其特征在于，所述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
  11. 如权利要求9所述的方法，其特征在于，将所述一个/多个SN的配置信息发送给用户终端UE之后，还包括：
    获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者
    接收满足连接条件的SN在与UE建立连接后，通知的所述确定的满足连接条件的SN。
  12. 如权利要求9所述的方法，其特征在于，还包括：
    确定所述UE与满足连接条件的SN建立连接后，释放未被UE请求建立连接的SN。
  13. 如权利要求9所述的方法，其特征在于，所述连接条件包括如下任一或任多个条件：
    SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
    SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
    用于对SN测量评估计时的定时器超时。
  14. 如权利要求13所述的方法，其特征在于，所述测量量包括如下任一或任多个测量量：
    参考信号接收功率RSRP；
    参考信号接收质量RSRQ；
    信号与干扰和噪声比SINR。
  15. 如权利要求11所述的方法，其特征在于，获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件的SN，包括：
    通过UE发送的RRC重配置完成消息，获取所述确定的满足连接条件的SN；或者
    通过UE单独发送的SN接入请求/通知/指示消息，获取所述确定的满足连接条件的SN。
  16. 如权利要求15所述的方法，其特征在于，通过UE发送的RRC重配置完成消息，获取所述确定的满足连接条件的SN之后，还包括：
    向所述满足连接条件的SN，发送SN重配置完成消息。
  17. 如权利要求11所述的方法，其特征在于，还包括：
    获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件 的SN；或者接收满足连接条件的SN在与UE建立连接后，通知的所述确定的满足连接条件的SN之后，向之前与UE已经有连接的原SN发送SN改变确认消息。
  18. 如权利要求9所述的方法，其特征在于，向一个/多个辅节点SN预先发送SN添加请求，包括：
    基于UE上报的前期测量结果，向一个/多个辅节点SN发送SN添加请求。
  19. 如权利要求9所述的方法，其特征在于，向一个/多个辅节点SN预先发送SN添加请求，包括：
    基于与UE已经有连接的原SN发送的SN改变请求，向一个/多个辅节点SN发送SN添加请求。
  20. 如权利要求9所述的方法，其特征在于，接收所述一个/多个SN返回的配置信息，并将所述一个/多个SN的配置信息发送给用户终端UE，包括：
    接收所述一个/多个SN通过添加请求确认消息返回的配置信息；
    通过RRC重配置消息，将所述一个/多个SN的配置信息发送给用户终端UE。
  21. 如权利要求20所述的方法，其特征在于，通过RRC重配置消息，将所述一个/多个SN的配置信息发送给用户终端UE，包括：
    针对所述一个/多个SN的配置信息中的每个SN的配置信息，通过单独发送RRC重配置消息的发送给UE；或者
    针对一个/多个SN的配置信息进行抽取或单独级联后，通过一条RRC重配置消息发送给UE。
  22. 如权利要求20所述的方法，其特征在于，还包括：
    接收所述UE收到RRC重配置消息后，直接发送的对应所述一个/多个SN的配置信息的RRC重配置完成消息；或者
    接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息。
  23. 如权利要求9所述的方法，其特征在于，还包括：
    接收所述满足连接条件的SN发送的，指示所述SN与所述UE建立随机接入完成的指示信息。
  24. 如权22所述的方法，其特征在于，接收所述UE收到RRC重配置消息后，直接发送的对应所述一个/多个SN的配置信息的RRC重配置完成消息之后，还包括：
    向所述一个/多个SN发送SN重配置完成消息。
  25. 如权利要求22所述的方法，其特征在于，接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息之后，还包括：
    向之前与UE已经有连接的原SN发送SN改变确认消息。
  26. 一种基于双/多连接的辅节点添加/更换方法的终端设备，其特征在于，该设备包括处理器和存储器，所述存储器用于存储所述处理器可执行的程序，所述处理器用于读取所述存储器中的程序并执行如下步骤：
    接收主节点MN发送的一个/多个辅节点SN的配置信息；
    根据所述一个/多个辅节点SN的配置信息，对所述一个/多个SN进行测量评估，确定满足连接条件的SN；
    向所述满足连接条件的SN发起随机接入过程。
  27. 如权利要求26所述的设备，其特征在于，所述主节点MN为主网络节点实体MN或者主网络节点实体MN下的主服务小区，所述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
  28. 如权利要求26所述的设备，其特征在于，所述处理器具体用于：
    通过向MN发送的RRC重配置完成消息，向所述MN通知所述满足连接条件的SN；或者
    通过单独向MN发送的SN接入请求/通知/指示消息，向所述MN通知所述满足连接条件的SN。
  29. 如权利要求26所述的设备，其特征在于，所述连接条件包括如下任一或任多个条件：
    SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
    SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
    用于对SN测量评估计时的定时器超时。
  30. 如权利要求29所述的设备，其特征在于，所述测量量包括如下任一或任多个测量量：
    参考信号接收功率RSRP；
    参考信号接收质量RSRQ；
    信号与干扰和噪声比SINR。
  31. 如权利要求26所述的设备，其特征在于，所述处理器具体用于：
    接收MN发送的RRC重配置消息，获取MN发送的一个/多个SN的配置信息。
  32. 如权利要求31所述的设备，其特征在于，所述处理器具体用于：
    接收MN针对所述一个/多个SN的配置信息中的每个SN的配置信息，单独发送的RRC重配置消息；或者
    接收MN针对一个/多个SN的配置信息进行抽取或单独级联后，发送的一条RRC重配置消息。
  33. 如权利要求31所述的设备，其特征在于，所述处理器还用于：
    接收主节点发送的RRC重配置消息后，直接向所述MN发送对应所述一个/多个SN的配置信息的RRC重配置完成消息；或者
    确定满足连接条件的SN后，向所述MN发送对应所述满足连接条件的SN的配置信息的RRC重配置完成消息。
  34. 一种基于双/多连接的辅节点添加/更换方法的网络侧设备，其特征在于，该设备包括处理器和存储器，所述存储器用于存储所述处理器可执行的程序，所述处理器用于读取所述存储器中的程序并执行如下步骤：
    向一个/多个辅节点SN预先发送SN添加请求；
    接收所述一个/多个SN返回的配置信息，并将所述一个/多个SN的配置 信息发送给用户终端UE。
  35. 如权利要求34所述的设备，其特征在于，所述辅节点SN为辅网络节点实体SN或者辅网络节点实体SN下的主服务小区。
  36. 如权利要求34所述的设备，其特征在于，将所述一个/多个SN的配置信息发送给用户终端UE之后，所述处理器还用于：
    获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者
    接收满足连接条件的SN在与UE建立连接后，通知的所述确定的满足连接条件的SN。
  37. 如权利要求34所述的设备，其特征在于，所述处理器还用于：
    确定所述UE与满足连接条件的SN建立连接后，释放未被UE请求建立连接的SN。
  38. 如权利要求34所述的设备，其特征在于，所述连接条件包括如下任一或任多个条件：
    SN下小区的一个/多个测量量的测量结果满足对应的预设门限要求；
    SN下小区的一个/多个测量量的测量结果优于指定小区对应测量量的测量结果；
    用于对SN测量评估计时的定时器超时。
  39. 如权利要求38所述的设备，其特征在于，所述测量量包括如下任一或任多个测量量：
    参考信号接收功率RSRP；
    参考信号接收质量RSRQ；
    信号与干扰和噪声比SINR。
  40. 如权利要求34所述的设备，其特征在于，所述处理器具体用于：
    通过UE发送的RRC重配置完成消息，获取所述确定的满足连接条件的SN；或者
    通过UE单独发送的SN接入请求/通知/指示消息，获取所述确定的满足 连接条件的SN。
  41. 如权利要求40所述的设备，其特征在于，通过UE发送的RRC重配置完成消息，获取所述确定的满足连接条件的SN之后，所述处理器还用于：
    向所述满足连接条件的SN，发送SN重配置完成消息。
  42. 如权利要求34所述的设备，其特征在于，所述处理器还用于：
    获取UE基于对所述一个/多个SN进行测量评估后，确定的满足连接条件的SN；或者接收满足连接条件的SN在与UE建立连接后，通知的所述确定的满足连接条件的SN之后，向之前与UE已经有连接的原SN发送SN改变确认消息。
  43. 如权利要求34所述的设备，其特征在于，所述处理器具体用于：
    基于UE上报的前期测量结果，向一个/多个辅节点SN发送SN添加请求。
  44. 如权利要求34所述的设备，其特征在于，所述处理器具体用于：
    基于与UE已经有连接的原SN发送的SN改变请求，向一个/多个辅节点SN发送SN添加请求。
  45. 如权利要求34所述的设备，其特征在于，所述处理器具体用于：
    接收所述一个/多个SN通过添加请求确认消息返回的配置信息；
    通过RRC重配置消息，将所述一个/多个SN的配置信息发送给用户终端UE。
  46. 如权利要求45所述的设备，其特征在于，所述处理器具体用于：
    针对所述一个/多个SN的配置信息中的每个SN的配置信息，通过单独发送RRC重配置消息的发送给UE；或者
    针对一个/多个SN的配置信息进行抽取或单独级联后，通过一条RRC重配置消息发送给UE。
  47. 如权利要求45所述的设备，其特征在于，所述处理器还用于：
    接收所述UE收到RRC重配置消息后，直接发送的对应所述一个/多个SN的配置信息的RRC重配置完成消息；或者
    接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件 的SN的配置信息的RRC重配置完成消息。
  48. 如权利要求34所述的设备，其特征在于，所述处理器还用于：
    接收所述满足连接条件的SN发送的，指示所述SN与所述UE建立随机接入完成的指示信息。
  49. 如权利要求47所述的设备，其特征在于，接收所述UE收到RRC重配置消息后，直接发送的对应所述一个/多个SN的配置信息的RRC重配置完成消息之后，所述处理器还用于：
    向所述一个/多个SN发送SN重配置完成消息。
  50. 如权利要求47所述的设备，其特征在于，接收所述UE确定满足连接条件的SN后，发送的对应所述满足连接条件的SN的配置信息的RRC重配置完成消息之后，所述处理器还用于：
    向之前与UE已经有连接的原SN发送SN改变确认消息。
  51. 一种基于双/多连接的辅节点添加/更换方法的终端装置，其特征在于，该装置包括：
    SN配置信息接收单元，用于接收主节点MN发送的一个/多个辅节点SN的配置信息；
    连接条件判断单元，用于根据所述一个/多个辅节点SN的配置信息，对所述一个/多个SN进行测量评估，确定满足连接条件的SN；
    连接建立单元向所述满足连接条件的SN发起随机接入过程。
  52. 一种基于双/多连接的辅节点添加/更换方法的网络侧装置，其特征在于，该装置包括：
    SN添加请求发送单元，用于向一个/多个辅节点SN预先发送SN添加请求；
    SN配置信息转发单元，用于接收上述一个/多个SN返回的配置信息，并将上述一个/多个SN的配置信息发送给用户终端UE。
  53. 一种计算机可存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现如权利要求1～8任一所述方法的步骤。
  54. 一种计算机可存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现如权利要求9～25任一所述方法的步骤。
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