WO2019213805A1 - 一种恢复rrc连接的方法及装置、计算机存储介质 - Google Patents

一种恢复rrc连接的方法及装置、计算机存储介质 Download PDF

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Publication number
WO2019213805A1
WO2019213805A1 PCT/CN2018/085855 CN2018085855W WO2019213805A1 WO 2019213805 A1 WO2019213805 A1 WO 2019213805A1 CN 2018085855 W CN2018085855 W CN 2018085855W WO 2019213805 A1 WO2019213805 A1 WO 2019213805A1
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WO
WIPO (PCT)
Prior art keywords
node
terminal
rrc connection
target
context
Prior art date
Application number
PCT/CN2018/085855
Other languages
English (en)
French (fr)
Inventor
刘建华
杨宁
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to PCT/CN2018/085855 priority Critical patent/WO2019213805A1/zh
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to AU2018422296A priority patent/AU2018422296A1/en
Priority to CN201880087444.XA priority patent/CN111630900A/zh
Priority to BR112020018971-5A priority patent/BR112020018971A2/pt
Priority to MX2020009888A priority patent/MX2020009888A/es
Priority to CA3093484A priority patent/CA3093484A1/en
Priority to KR1020207025296A priority patent/KR102468531B1/ko
Priority to EP18917750.4A priority patent/EP3742815B1/en
Priority to JP2020546353A priority patent/JP7128897B6/ja
Priority to CN202010871159.6A priority patent/CN112040567B/zh
Publication of WO2019213805A1 publication Critical patent/WO2019213805A1/zh
Priority to US17/008,449 priority patent/US11700571B2/en
Priority to US18/200,324 priority patent/US20230309000A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0069Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/15Setup of multiple wireless link connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005Transmission of information for alerting of incoming communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/27Transitions between radio resource control [RRC] states

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and device for recovering a radio resource control (RRC) connection, and a computer storage medium.
  • RRC radio resource control
  • enhanced mobile broadband eMBB
  • URLLC Ultra Reliable Low Latency Communication
  • mMTC massive machine type communication
  • RRC_INACTIVE an RRC inactive state
  • RRC_IDLE the RRC idle
  • RRC_CONNECTED the RRC connection
  • the network side configures a paging area of the radio access network (RAN) of the radio access network (RAN) by using dedicated signaling, and the RAN paging area may be a cell or Multiple cells.
  • the network side is not notified, and the mobility behavior under idle is followed, that is, the cell selection reselection principle.
  • the UE moves out of the paging area configured by the RAN, the UE is triggered to resume the RRC connection and re-acquire the paging area configured by the RAN.
  • the base station (such as gNB) that keeps the RAN and the core network (CN) connected to the UE triggers all cells in the RAN paging area to send paging messages to the UE, so that the INACTIVCE state is enabled.
  • the UE can resume the RRC connection and perform data reception.
  • the UE enters the RRC connection state from the INACTIVE state. There are three cases:
  • the UE has downlink data arriving, and the network side initiates paging on the RAN side to prompt the UE to enter the connection state;
  • the UE itself initiates an RAN location area update, such as a periodic RAN location update or a cross-region location update;
  • the UE has an uplink data transmission requirement, which causes the UE to enter a connection state.
  • the network side supports dual connectivity (DC, Dual Connectivity) or multiple connectivity (MC, Multiple Connectivity).
  • DC Dual Connectivity
  • MC Multiple Connectivity
  • the UE in the DC/MC connection mode also needs to support the INACTIVE state. How to correctly recover the RRC connection in the UE in the INACTIVE state in the DC/MC connection mode is a problem to be solved.
  • an embodiment of the present invention provides a method and apparatus for restoring an RRC connection, and a computer storage medium.
  • the target base station receives an RRC connection recovery request message sent by the terminal;
  • the target base station Determining, by the target base station, the first node of the terminal service according to the UE identifier in the RRC connection recovery request message, and acquiring a UE context from the first node, where the UE context includes the first node side a first UE context and a second UE context on the second node side;
  • the target base station sends an RRC connection recovery message to the terminal, so that the terminal resumes the RRC connection.
  • the terminal is a terminal in a first RRC inactive state
  • the first RRC inactive state refers to a state in which the terminal is located after all RRC connections are suspended.
  • the RRC connection recovery request message carries the first indication information, where the first indication information is used to indicate that the network side initiates the RRC connection recovery.
  • the target base station receives an RRC connection recovery request message sent by the terminal;
  • the second node If the downlink data reaches the second node, the second node notifies the first node to initiate paging to the terminal; if the downlink data reaches the first node, the first node initiates Paging the terminal; the paging is used to trigger the terminal to initiate an RRC connection recovery process.
  • the target base station if uplink data arrives at the terminal, the target base station receives an RRC connection recovery request message sent by the terminal.
  • the acquiring the UE context from the first node includes:
  • the target base station receives the first UE context of the first node side and the second UE context of the second node side that are sent by the first node.
  • the RRC connection recovery request message carries a first physical cell identifier (PCI), and the first PCI is a physical secondary cell (Pscell) of the second node suggested by the terminal. , Physical secondary cell).
  • PCI physical cell identifier
  • Pscell physical secondary cell
  • the RRC connection recovery request message carries the second indication information, where the second indication information is used by the first node to recover the secondary cell group (SCG, Secondary Cell Group) Resources.
  • SCG Secondary Cell Group
  • the method further includes:
  • the target base station After the terminal resumes completing the RRC connection, the target base station receives an RRC connection recovery complete message sent by the terminal.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a secondary node in a multi-connection network.
  • the terminal sends an RRC connection recovery request message to the target base station, so that the target base station determines the first node of the terminal service according to the UE identifier in the RRC connection recovery request message, and acquires the UE context from the first node.
  • the UE context includes a first UE context on the first node side and a second UE context on the second node side;
  • the terminal After receiving the RRC connection recovery message sent by the target base station, the terminal resumes the RRC connection.
  • the terminal is a terminal in a first RRC inactive state
  • the first RRC inactive state refers to a state in which the terminal is located after all RRC connections are suspended.
  • the RRC connection recovery request message carries the first indication information, where the first indication information is used to indicate that the network side initiates the RRC connection recovery.
  • the terminal after receiving the paging message sent by the first node, the terminal sends an RRC connection recovery request message to the target base station;
  • the second node If the downlink data reaches the second node, the second node notifies the first node to initiate paging to the terminal; if the downlink data reaches the first node, the first node initiates Paging the terminal; the paging is used to trigger the terminal to initiate an RRC connection recovery process.
  • the terminal if the uplink data arrives at the terminal, the terminal sends an RRC connection recovery request message to the target base station.
  • the RRC connection recovery request message carries a first PCI
  • the first PCI is an identifier of a Pscell of the second node suggested by the terminal.
  • the RRC connection recovery request message carries the second indication information, where the second indication information is used by the first node whether the resource of the SCG part needs to be restored.
  • the method further includes:
  • the terminal After the terminal resumes completing the RRC connection, it sends an RRC connection recovery complete message to the target base station.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a secondary node in a multi-connection network.
  • the first node determines the target second node, sending the SCG configuration information to the target second node, and configuring a new first computing input parameter for calculating the key on the target second node side;
  • the first node After acquiring, by the first node, the first dedicated random access channel (RACH) resource of the target second node, the first node sends the first dedicated RACH resource to the terminal and the First calculating an input parameter, so that the terminal initiates a random access procedure on the target second node side based on the first dedicated RACH resource and the first calculated input parameter.
  • RACH random access channel
  • the terminal is a terminal in a second RRC inactive state
  • the second RRC inactive state is a state in which the terminal is located after the RRC connection is suspended.
  • the suspension part RRC connection refers to the resource that suspends the SCG part.
  • the method further includes:
  • the first node receives the second UE context of the second node side sent by the second node, where the SCG configuration information includes at least the second UE context of the second node side.
  • the method further includes:
  • the first node receives the indication information sent by the terminal, where the indication information is used to request the first node to initiate recovery of the SCG side resource.
  • the receiving, by the first node, the indication information sent by the terminal includes:
  • the first node receives the indication information sent by the terminal by using at least RRC signaling or a medium access control control element (MAC CE).
  • MAC CE medium access control control element
  • the indication information further carries set information or measurement result information of the second node side cell.
  • the first node determines the target second node, and includes:
  • the first node determines the target second node based on the measurement result reported by the terminal.
  • the sending, by the terminal, the first dedicated RACH resource and the first computing input parameter includes:
  • the first node when the first node acquires the first dedicated RACH resource of the target second node side configured by the target second node, the first node further acquires the target configured by the target second node.
  • the system broadcast information on the second node side.
  • the method further includes:
  • the first node sends the system broadcast information of the target second node side to the terminal by using RRC signaling.
  • the terminal needs to read first. After the system broadcast information is obtained, the random access process of the target second node side is triggered.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a source secondary node in a multi-connection network
  • the target is second.
  • the node is a dual-join network or a target secondary node in a multi-connection network.
  • a first receiving unit configured to receive an RRC connection recovery request message sent by the terminal
  • a UE context obtaining unit configured to determine, according to the UE identifier in the RRC connection recovery request message, a first node that is served by the terminal, and acquire a UE context from the first node, where the UE context includes the first a first UE context on the node side and a second UE context on the second node side;
  • a sending unit configured to send an RRC connection recovery message to the terminal, to enable the terminal to resume the RRC connection.
  • the terminal is a terminal in a first RRC inactive state
  • the first RRC inactive state refers to a state in which the terminal is located after all RRC connections are suspended.
  • the RRC connection recovery request message carries the first indication information, where the first indication information is used to indicate that the network side initiates the RRC connection recovery.
  • the first receiving unit receives an RRC connection recovery request message sent by the terminal;
  • the second node If the downlink data reaches the second node, the second node notifies the first node to initiate paging to the terminal; if the downlink data reaches the first node, the first node initiates Paging the terminal; the paging is used to trigger the terminal to initiate an RRC connection recovery process.
  • the first receiving unit receives an RRC connection recovery request message sent by the terminal.
  • the UE context acquiring unit is configured to send a UE context request message to the first node, so that after the first node receives the UE context request message, the UE is used by the UE.
  • the context request message performs integrity protection verification, and acquires the second UE context of the second node side from the second node of the terminal service after the verification is passed; and receives the first node side sent by the first node The first UE context and the second UE context on the second node side.
  • the RRC connection recovery request message carries a first physical cell identifier PCI, and the first PCI is an identifier of a Pscell of the second node suggested by the terminal.
  • the RRC connection recovery request message carries the second indication information, where the second indication information is used by the first node whether the resource of the SCG part needs to be restored.
  • the device further includes:
  • the second receiving unit is configured to receive an RRC connection recovery complete message sent by the terminal after the terminal resumes completing the RRC connection.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a secondary node in a multi-connection network.
  • a first sending unit configured to send an RRC connection recovery request message to the target base station, so that the target base station determines, according to the UE identifier in the RRC connection recovery request message, the first node of the terminal service, and from the The first node acquires a UE context, where the UE context includes a first UE context on the first node side and a second UE context on the second node side;
  • a receiving unit configured to receive an RRC connection recovery message sent by the target base station
  • a recovery unit for restoring an RRC connection For restoring an RRC connection.
  • the terminal is a terminal in a first RRC inactive state
  • the first RRC inactive state refers to a state in which the terminal is located after all RRC connections are suspended.
  • the RRC connection recovery request message carries the first indication information, where the first indication information is used to indicate that the network side initiates the RRC connection recovery.
  • the first sending unit after the terminal receives the paging message sent by the first node, the first sending unit sends an RRC connection recovery request message to the target base station;
  • the second node If the downlink data reaches the second node, the second node notifies the first node to initiate paging to the terminal; if the downlink data reaches the first node, the first node initiates Paging the terminal; the paging is used to trigger the terminal to initiate an RRC connection recovery process.
  • the first sending unit if the uplink data arrives at the terminal, the first sending unit sends an RRC connection recovery request message to the target base station.
  • the RRC connection recovery request message carries a first PCI
  • the first PCI is an identifier of a Pscell of the second node suggested by the terminal.
  • the RRC connection recovery request message carries the second indication information, where the second indication information is used by the first node whether the resource of the SCG part needs to be restored.
  • the device further includes:
  • a second sending unit configured to send an RRC connection recovery complete message to the target base station after the restoration completes the RRC connection.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a secondary node in a multi-connection network.
  • a determining unit configured to determine a target second node
  • a first sending unit configured to send SCG configuration information to the target second node
  • a configuration unit configured to configure a new first input parameter for calculating a key on the second target side of the target
  • An acquiring unit configured to acquire a first dedicated RACH resource of the target second node side of the target second node configuration
  • a second sending unit configured to send, to the terminal, the first dedicated RACH resource and the first calculated input parameter, so that the terminal is based on the first dedicated RACH resource and the first calculated input parameter, in the target
  • the second node side initiates a random access procedure.
  • the terminal is a terminal in a second RRC inactive state
  • the second RRC inactive state is a state in which the terminal is located after the RRC connection is suspended.
  • the suspension part RRC connection refers to the resource that suspends the SCG part.
  • the device further includes:
  • a first receiving unit configured to receive a notification message that is sent by the second node, where the notification message is used to notify the first node that the downlink data reaches the second node side, and the downlink data corresponds to the DRB identification information of the bearer.
  • the device in the case that the uplink data corresponding to the SCG bearer arrives at the terminal, the device further includes:
  • the second receiving unit is configured to receive the indication information sent by the terminal, where the indication information is used to request the first node to initiate recovery of the SCG side resource.
  • the second receiving unit is configured to receive the indication information sent by the terminal by using at least RRC signaling or a MAC CE.
  • the indication information further carries set information or measurement result information of the second node side cell.
  • the determining unit is configured to determine the target second node based on the measurement result reported by the terminal.
  • the second sending unit is configured to send, by using signaling, a MAC CE or a PDCCH order, the first dedicated RACH resource and the first calculated input parameter to the terminal.
  • the acquiring unit when the acquiring unit acquires the first dedicated RACH resource of the target second node side configured by the target second node, the acquiring unit further acquires the target number of the target second node configuration. System broadcast information on the two-node side.
  • the device further includes:
  • a third sending unit configured to send system broadcast information of the target second node side to the terminal by using RRC signaling.
  • the terminal needs to read first. After the system broadcast information is obtained, the random access process of the target second node side is triggered.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a source secondary node in a multi-connection network
  • the target is second.
  • the node is a dual-join network or a target secondary node in a multi-connection network.
  • the computer storage medium provided by the embodiment of the present invention has stored thereon computer executable instructions, and the computer executable instructions are implemented by the processor to implement the foregoing method for restoring an RRC connection.
  • the target base station receives the RRC connection recovery request message sent by the terminal; the target base station determines the first node of the terminal service according to the UE identifier in the RRC connection recovery request message, Obtaining a UE context from the first node, where the UE context includes a first UE context on the first node side and a second UE context on a second node side; the target base station sends an RRC connection recovery to the terminal a message to cause the terminal to resume the RRC connection.
  • the RRC connection recovery process in the two RRC inactive states achieves the purpose of quickly and accurately selecting the SN by the UE auxiliary network side.
  • FIG. 2 is a schematic flowchart 1 of a method for restoring an RRC connection according to an embodiment of the present invention
  • FIG. 3 is a second schematic flowchart of a method for restoring an RRC connection according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart 3 of a method for restoring an RRC connection according to an embodiment of the present invention
  • FIG. 5 is a first schematic structural diagram of an apparatus for restoring an RRC connection according to an embodiment of the present invention
  • FIG. 6 is a second schematic structural diagram of an apparatus for restoring an RRC connection according to an embodiment of the present invention.
  • FIG. 7 is a third schematic structural diagram of an apparatus for restoring an RRC connection according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
  • the technical solution of the embodiment of the present invention is mainly applied to a 5G mobile communication system.
  • the technical solution of the embodiment of the present invention is not limited to the 5G mobile communication system, and can also be applied to other types of mobile communication systems.
  • eMBB aims at users to obtain multimedia content, services and data, and its business needs are growing rapidly. Because eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, the difference in service capabilities and requirements is relatively large. Therefore, services must be analyzed in combination with specific deployment scenarios.
  • URLLC scenario Typical applications for URLLC include: industrial automation, power automation, telemedicine operations, traffic security, and more.
  • Typical characteristics of URLLC include: high connection density, small data volume, delay-insensitive service, low cost and long service life of the module.
  • RRC_IDLE state Mobility is UE-based cell selection reselection, paging is initiated by CN, and paging area is configured by CN. There is no UE AS context on the base station side. There is no RRC connection.
  • RRC_CONNECTED state There is an RRC connection, and the base station and the UE have a UE AS context. The network side knows that the location of the UE is at a specific cell level. Mobility is the mobility of network-side control. Unicast data can be transmitted between the UE and the base station.
  • RRC_INACTIVE state mobility is UE-based cell selection reselection, there is a connection between CN and RAN, UE AS context exists on a certain base station, paging is triggered by RAN, and RAN-based paging area is managed by RAN, The network side knows that the location of the UE is based on the RAN's paging area level.
  • FIG. 1 is a schematic diagram of an RRC connection recovery process. As shown in FIG. 1, the RRC connection recovery process includes the following processes:
  • Step 101 The UE is in the INACTIVE state, and the RRC connection is to be restored.
  • Step 102 The UE sends a preamble to the gNB.
  • Step 103 The gNB sends a random access response (RAR) to the UE.
  • RAR random access response
  • Step 104 The UE sends an RRC Connection Resume Request message to the gNB.
  • Step 105 The gNB requests the anchor gNB (anchor gNB) for UE context information.
  • Step 106 The gNB sends an RRC Connection Resume message to the UE.
  • Step 107 The UE enters an RRC Connection (RRC_CONNECTED) state.
  • Step 108 The UE sends an RRC Connection Resume Complete message to the gNB.
  • the technical solution of the embodiment of the present invention defines two new concepts of a full RRC connection suspension and a partial RRC connection suspension, and enables the network side and the UE side to support the INACTIVE state.
  • the full RRC connection suspension refers to hanging all RRC connections
  • the partial RRC connection suspension refers to the suspension part RRC connection
  • the suspension part RRC connection refers to the resources of the suspension SCG part.
  • the UE after performing the suspension of all RRC connections, the UE enters a full RRC INACTIVE state (which may also be referred to as a first INACTIVE state), and after performing the suspension of the RRC connection, the UE enters a partial RRC INACTIVE state (also referred to as a second INACTIVE). status).
  • FIG. 2 is a schematic flowchart 1 of a method for restoring an RRC connection according to an embodiment of the present invention. As shown in FIG. 2, the method for restoring an RRC connection includes the following steps:
  • Step 201 The target base station receives an RRC connection recovery request message sent by the terminal.
  • the terminal is a terminal in a first RRC inactive state (that is, a full RRC INACTIVE state), and the first RRC inactive state refers to the terminal after all RRC connections are suspended. The state of the place.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a secondary node in a multi-connection network.
  • the triggering of the RRC connection recovery process by the terminal may be performed in the following manner:
  • Manner 1 After the terminal receives the paging message sent by the first node, the target base station receives an RRC connection recovery request message sent by the terminal, where if the downlink data reaches the second node, the first Notifying the first node to initiate paging to the terminal; if the downlink data reaches the first node, the first node initiates paging to the terminal; The terminal initiates an RRC connection recovery process.
  • the RRC connection recovery request message carries the first indication information, where the first indication information is used to indicate that the network side initiates the RRC connection recovery.
  • the RRC connection recovery request message carries the first PCI, and the first PCI is an identifier of the Pscell of the second node suggested by the terminal.
  • the RRC connection recovery request message carries the second indication information, where the second indication information is used by the first node whether the resource of the SCG part needs to be restored.
  • Step 202 The target base station determines, according to the UE identifier in the RRC connection recovery request message, the first node of the terminal service, and acquires a UE context from the first node, where the UE context includes the first The first UE context on the node side and the second UE context on the second node side.
  • the acquiring the UE context from the first node includes:
  • the target base station receives the first UE context of the first node side and the second UE context of the second node side that are sent by the first node.
  • Step 203 The target base station sends an RRC connection recovery message to the terminal, so that the terminal resumes the RRC connection.
  • the target base station receives the RRC connection recovery complete message sent by the terminal.
  • the recovery process of the UE in the full RRC INACTIVE state of the embodiment of the present invention is described below with reference to a specific application example.
  • the SN is the second node
  • the MN is the first node.
  • the SN informs the MN to initiate a paging procedure for the target UE; if the downlink data reaches the MN side, the MN initiates a paging procedure for the target UE; the paging triggers the UE to initiate an RRC connection. Recovery process. If the uplink data arrives at the UE side, the UE initiates an RRC connection recovery procedure.
  • the UE initiates an RRC connection recovery request message (MSG3) to the target base station, and the optional MSG3 may carry an indication indicating the reason for the network side to initiate RRC recovery, such as signaling reason, uplink data arrival, and DRB of uplink data arrival. Id information.
  • the target base station addresses the served MN node according to the UE identity in the MSG3 and sends a request for the UE context request to the serving MN node.
  • the MN After receiving the request, the MN first performs integrity protection verification for the MSG3, and after the verification succeeds, it requests the SN node of the service to request the UE context of the SN side, and sends the UE context of the MN and the SN side to the target base station.
  • the UE carries a PCI in the MSG3, and the PCI is the Pscell of the SN node suggested by the UE.
  • Mode 2 The UE carries an indication in the MSG3, where the indication is used to indicate whether the MN needs to restore the bearer and resources of the SCG part.
  • the target base station transmits an RRC Connection Recovery message (MSG4) to the UE to resume the RRC connection.
  • MSG4 RRC Connection Recovery message
  • the MN sends a new key S-KgNB to the new SN node.
  • the RRC connection recovery complete message is sent.
  • FIG. 3 is a schematic flowchart 2 of a method for restoring an RRC connection according to an embodiment of the present invention. As shown in FIG. 3, the method for restoring an RRC connection includes the following steps:
  • Step 301 The terminal sends an RRC connection recovery request message to the target base station, so that the target base station determines, according to the UE identifier in the RRC connection recovery request message, the first node of the terminal service, and from the first node.
  • the terminal is a terminal in a first RRC inactive state (that is, a full RRC INACTIVE state), and the first RRC inactive state refers to the terminal after all RRC connections are suspended. The state of the place.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a secondary node in a multi-connection network.
  • the triggering of the RRC connection recovery process by the terminal may be performed in the following manner:
  • Manner 1 After receiving the paging message sent by the first node, the terminal sends an RRC connection recovery request message to the target base station; wherein, if the downlink data reaches the second node, the second node notifies the The first node initiates paging to the terminal; if the downlink data reaches the first node, the first node initiates paging to the terminal; the paging is used to trigger the terminal to initiate RRC Connection recovery process.
  • the RRC connection recovery request message carries the first indication information, where the first indication information is used to indicate that the network side initiates the RRC connection recovery.
  • the RRC connection recovery request message carries the first PCI, and the first PCI is an identifier of the Pscell of the second node suggested by the terminal.
  • the RRC connection recovery request message carries the second indication information, where the second indication information is used by the first node whether the resource of the SCG part needs to be restored.
  • Step 302 After receiving the RRC connection recovery message sent by the target base station, the terminal resumes the RRC connection.
  • the terminal after the terminal resumes completing the RRC connection, the terminal sends an RRC connection recovery complete message to the target base station.
  • FIG. 4 is a schematic flowchart 3 of a method for restoring an RRC connection according to an embodiment of the present invention. As shown in FIG. 4, the method for restoring an RRC connection includes the following steps:
  • Step 401 After determining the target second node, the first node sends the SCG configuration information to the target second node, and configures a new first computing input parameter for calculating the key on the target second node side.
  • the terminal is a terminal in a second RRC inactive state (that is, a partial RRC INACTIVE state), and the second RRC inactive state refers to the terminal after the RRC connection is suspended.
  • the suspension portion RRC connection refers to a resource that suspends the SCG portion.
  • the first node is a dual-connection network or a primary node in a multi-connection network
  • the second node is a dual-connection network or a source secondary node in a multi-connection network
  • the target second node It is a target secondary node in a dual-connection network or a multi-connection network.
  • Scenario 1 For the case where the downlink data arrives at the second node side
  • the first node receives, by the first node, a notification message that is sent by the second node, where the notification message is used to notify the first node that the downlink data reaches the second node side, and the downlink data corresponds to the DRB identification information of the bearer;
  • the first node receives the second UE context of the second node side sent by the second node, where the SCG configuration information includes at least the second UE context of the second node side.
  • Scenario 2 The case where the uplink data corresponding to the SCG bearer arrives at the terminal
  • the first node receives the indication information sent by the terminal, where the indication information is used to request the first node to initiate recovery of the SCG side resource.
  • the first node receives the indication information sent by the terminal by using at least RRC signaling or a MAC CE.
  • the indication information further carries set information or measurement result information of the second node side cell.
  • the first node determines the target second node based on the measurement result reported by the terminal.
  • Step 402 After the first node acquires the first dedicated RACH resource of the target second node side configured by the target second node, the first node sends the first dedicated RACH resource and the first calculation input parameter to the terminal, And causing the terminal to initiate a random access procedure on the target second node side based on the first dedicated RACH resource and the first calculated input parameter.
  • the first node sends the first dedicated RACH resource and the first calculated input parameter to the terminal by using signaling or MAC CE or PDCCH order.
  • the first node when the first node acquires the first dedicated RACH resource of the target second node side of the target second node configuration, the first node further acquires the target second of the target second node configuration. System broadcast information on the node side.
  • the first node sends the system broadcast information of the target second node side to the terminal by using RRC signaling.
  • the terminal needs to read system broadcast information first.
  • the random access procedure on the second node side of the target is triggered again.
  • the recovery process of the UE in the RRC INACTIVE state of the embodiment of the present invention is described below with reference to a specific application example.
  • the SN is the second node
  • the MN is the first node
  • the target SN is the target second node.
  • the SN informs the MN side that the downlink data arrives at the SN side, and notifies the data that the DRB ID information of the corresponding bearer is reached. At the same time, the SN forwards the UE context information of the UE on the SN side to the MN.
  • the MN side decides the target SN according to the measurement report result of the UE.
  • the MN will send the SCG configuration information to the target SN.
  • the MN configures a new target SN side to calculate a key calculation input parameter counter to the target SN.
  • the target SN simultaneously configures the system broadcast information of the target SN side cell, and configures the dedicated RACH resource on the Pscell to the MN for the MN to configure the UE to perform a random access procedure on the target SN side. If the target SN does not configure the information system broadcast information, and the target SN is not the original SN, the UE needs to first read the system broadcast information and then trigger the random access procedure on the target SN side.
  • the MN sends signaling or MAC CE or PDCCH order to configure the dedicated RACH resource for the UE to perform the random access procedure on the target SN side and the input parameter counter for the key calculation on the target SN side.
  • the MN configures system broadcast information of the target SN to the UE through RRC signaling. If the system broadcast information is not configured, the UE is required to first read the system broadcast information and then trigger the random access procedure on the target SN side.
  • the UE initiates a random access procedure on the target SN side to recover the SCG side resources and SRB3.
  • Scenario 2 The uplink data corresponding to the SCG bearer reaches the UE side.
  • the UE sends a request to the MN side to initiate resource recovery on the SCG side, and the indication may be carried in RRC signaling, or MAC CE or other signals.
  • the message may also carry the set information of the optional SN side cell or the measurement result information to the MN side.
  • the MN side decides the target SN according to the reported result of the UE.
  • the MN will send the SCG configuration information to the target SN.
  • the MN configures a new target SN side to calculate a key calculation input parameter counter to the target SN.
  • the target SN simultaneously configures the system broadcast information of the target SN side cell, and configures the dedicated RACH resource on the Pscell to the MN for the MN to configure the UE to perform a random access procedure on the target SN side. If the target SN does not configure the information system broadcast information, and the target SN is not the original SN, the UE needs to first read the system broadcast information and then trigger the random access procedure on the target side.
  • the MN sends signaling or MAC CE or PDCCH order to configure the dedicated RACH resource for the UE to perform the random access procedure on the target SN side and the input parameter counter for the key calculation on the target SN side.
  • the MN configures system broadcast information of the target SN to the UE through RRC signaling. If the system broadcast information is not configured, the UE needs to first read the system broadcast information and then trigger the random access procedure on the target side.
  • the UE initiates a random access procedure on the target SN side to recover the SCG side resources and SRB3.
  • the apparatus for restoring an RRC connection includes:
  • the first receiving unit 501 is configured to receive an RRC connection recovery request message sent by the terminal.
  • the UE context obtaining unit 502 is configured to determine, according to the UE identifier in the RRC connection recovery request message, a first node that is served by the terminal, and acquire a UE context from the first node, where the UE context includes the a first UE context on one node side and a second UE context on a second node side;
  • the sending unit 503 is configured to send an RRC connection recovery message to the terminal, so that the terminal resumes the RRC connection.
  • the terminal is a terminal in a first RRC inactive state
  • the first RRC inactive state refers to a state in which the terminal is located after all RRC connections are suspended.
  • the RRC connection recovery request message carries the first indication information, where the first indication information is used to indicate that the network side initiates the RRC connection recovery.
  • the first receiving unit 501 receives an RRC connection recovery request message sent by the terminal;
  • the second node If the downlink data reaches the second node, the second node notifies the first node to initiate paging to the terminal; if the downlink data reaches the first node, the first node initiates Paging the terminal; the paging is used to trigger the terminal to initiate an RRC connection recovery process.
  • the first receiving unit 501 receives an RRC connection recovery request message sent by the terminal.
  • the UE context obtaining unit 502 is configured to send a UE context request message to the first node, so that after the first node receives the UE context request message, the UE context is used.
  • the request message is subjected to integrity protection verification, and after the verification is passed, the second UE context of the second node side is obtained from the second node of the terminal service; and the first node side sent by the first node is received.
  • the first UE context and the second UE context on the second node side.
  • the RRC connection recovery request message carries a first PCI
  • the first PCI is an identifier of a Pscell of the second node suggested by the terminal.
  • the RRC connection recovery request message carries the second indication information, where the second indication information is used by the first node whether the resource of the SCG part needs to be restored.
  • the device further includes:
  • the second receiving unit 504 is configured to receive an RRC connection recovery complete message sent by the terminal after the terminal resumes completing the RRC connection.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a secondary node in a multi-connection network.
  • the implementation functions of the units in the RRC connected apparatus shown in FIG. 5 can be understood by referring to the related description of the foregoing method for restoring the RRC connection.
  • the functions of the units in the device for restoring the RRC connection shown in FIG. 5 can be implemented by a program running on the processor, or can be realized by a specific logic circuit.
  • FIG. 6 is a schematic structural diagram of the structure of an apparatus for restoring an RRC connection according to an embodiment of the present invention. As shown in FIG. 6, the apparatus for restoring an RRC connection includes:
  • the first sending unit 601 is configured to send an RRC connection recovery request message to the target base station, so that the target base station determines, according to the UE identifier in the RRC connection recovery request message, the first node of the terminal service, and the The first node acquires a UE context, where the UE context includes a first UE context on the first node side and a second UE context on the second node side;
  • the receiving unit 602 is configured to receive an RRC connection recovery message sent by the target base station;
  • the recovery unit 603 is configured to restore the RRC connection.
  • the terminal is a terminal in a first RRC inactive state
  • the first RRC inactive state refers to a state in which the terminal is located after all RRC connections are suspended.
  • the RRC connection recovery request message carries the first indication information, where the first indication information is used to indicate that the network side initiates the RRC connection recovery.
  • the first sending unit 601 sends an RRC connection recovery request message to the target base station;
  • the second node If the downlink data reaches the second node, the second node notifies the first node to initiate paging to the terminal; if the downlink data reaches the first node, the first node initiates Paging the terminal; the paging is used to trigger the terminal to initiate an RRC connection recovery process.
  • the first sending unit 601 if the uplink data arrives at the terminal, the first sending unit 601 sends an RRC connection recovery request message to the target base station.
  • the RRC connection recovery request message carries a first PCI
  • the first PCI is an identifier of a Pscell of the second node suggested by the terminal.
  • the RRC connection recovery request message carries the second indication information, where the second indication information is used by the first node whether the resource of the SCG part needs to be restored.
  • the device further includes:
  • the second sending unit 604 is configured to send an RRC connection recovery complete message to the target base station after the RRC connection is restored.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a secondary node in a multi-connection network.
  • FIG. 7 is a schematic structural diagram of a structure of an apparatus for restoring an RRC connection according to an embodiment of the present invention. As shown in FIG. 7, the apparatus for restoring an RRC connection includes:
  • a determining unit 701 configured to determine a target second node
  • a first sending unit 702 configured to send SCG configuration information to the target second node
  • a configuration unit 703, configured to configure a new first calculation input parameter for calculating a key on the target second node side;
  • the obtaining unit 704 is configured to acquire, by acquiring, the first dedicated RACH resource of the target second node side of the target second node configuration;
  • a second sending unit 705 configured to send, to the terminal, the first dedicated RACH resource and the first calculated input parameter, so that the terminal is based on the first dedicated RACH resource and the first calculated input parameter,
  • the target second node side initiates a random access procedure.
  • the terminal is a terminal in a second RRC inactive state
  • the second RRC inactive state refers to a state in which the terminal is in a suspended part after the RRC connection, the hanging part
  • the RRC connection refers to the resources that hang the SCG part.
  • the device further includes:
  • the first receiving unit 706 is configured to receive a notification message that is sent by the second node, where the notification message is used to notify the first node that the downlink data reaches the second node side, and the downlink data corresponds to the DRB identifier of the bearer.
  • the device further includes:
  • the second receiving unit 707 is configured to receive the indication information sent by the terminal, where the indication information is used to request the first node to initiate recovery of the SCG side resource.
  • the second receiving unit 707 is configured to receive the indication information sent by the terminal by using at least RRC signaling or a MAC CE.
  • the indication information further carries set information or measurement result information of the second node side cell.
  • the determining unit 701 is configured to determine the target second node based on the measurement result reported by the terminal.
  • the second sending unit 705 is configured to send, by using signaling or a MAC CE or a PDCCH order, the first dedicated RACH resource and the first calculated input parameter to the terminal.
  • the acquiring unit 704 when the acquiring unit 704 acquires the first dedicated RACH resource of the target second node side configured by the target second node, the acquiring unit 704 further acquires the target second configured by the target second node. System broadcast information on the node side.
  • the device further includes:
  • the third sending unit 708 is configured to send the system broadcast information of the target second node side to the terminal by using RRC signaling.
  • the terminal needs to read the system first. After the information is broadcast, the random access procedure on the second node side of the target is triggered.
  • the first node is a dual-connected network or a primary node in a multi-connection network
  • the second node is a dual-connected network or a source secondary node in a multi-connection network
  • the target second node is A dual-connected network or a target secondary node in a multi-connection network.
  • the implementation functions of the units in the RRC connected device shown in FIG. 7 can be understood by referring to the related description of the foregoing method for restoring the RRC connection.
  • the functions of the units in the device for restoring the RRC connection shown in FIG. 7 can be implemented by a program running on the processor, or can be realized by a specific logic circuit.
  • the device for restoring the RRC connection may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a separate product.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • program codes such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer executable instructions are stored, and the computer executable instructions are executed by the processor to implement the foregoing method for restoring an RRC connection according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
  • the computer device may be a terminal or a network device.
  • computer device 100 may include one or more (only one shown) processor 1002 (processor 1002 may include, but is not limited to, a Micro Controller Unit (MCU) or a programmable logic device.
  • a processing device such as an FPGA (Field Programmable Gate Array), a memory 1004 for storing data, and a transmission device 1006 for a communication function.
  • FPGA Field Programmable Gate Array
  • FIG. 8 is merely illustrative and does not limit the structure of the above electronic device.
  • computer device 100 may also include more or fewer components than shown in FIG. 8, or have a different configuration than that shown in FIG.
  • the memory 1004 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the method in the embodiment of the present invention, and the processor 1002 executes various functional applications by running software programs and modules stored in the memory 1004. And data processing, that is, to achieve the above method.
  • Memory 1004 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 1004 can further include memory remotely located relative to processor 1002, which can be connected to computer device 100 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 1006 is for receiving or transmitting data via a network.
  • the network specific examples described above may include a wireless network provided by a communication provider of computer device 100.
  • the transmission device 1006 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 1006 can be a radio frequency (RF) module for communicating with the Internet wirelessly.
  • NIC Network Interface Controller
  • RF radio frequency
  • the disclosed method and smart device may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one second processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit;
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

Abstract

本发明公开了一种恢复RRC连接的方法及装置、计算机存储介质,所述方法包括:目标基站接收终端发送的RRC连接恢复请求消息;所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;所述目标基站向所述终端发送RRC连接恢复消息,以使所述终端恢复RRC连接。

Description

一种恢复RRC连接的方法及装置、计算机存储介质 技术领域
本发明涉及无线通信技术领域,尤其涉及一种恢复无线资源控制(RRC,Radio Resource Control)连接的方法及装置、计算机存储介质。
背景技术
为了满足人们对业务的速率、延迟、高速移动性、能效的追求,以及未来生活中业务的多样性、复杂性,第三代合作伙伴计划(3GPP,3rd Generation Partnership Project)国际标准组织开始研发第五代(5G,5 th Generation)移动通信技术。
5G移动通信技术的主要应用场景为:增强型移动宽带(eMBB,Enhance Mobile Broadband)、低时延高可靠通信(URLLC,Ultra Reliable Low Latency Communication)、大规模机器类通信(mMTC,massive Machine Type Communication)。
在5G网络环境中,为了降低空口信令和快速恢复无线连接,快速恢复数据业务的目的,定义一个新的RRC状态,即RRC非激活(RRC_INACTIVE)状态。这种状态有别于RRC空闲(RRC_IDLE)状态和RRC连接(RRC_CONNECTED)状态。
当用户设备(UE,User Equipment)处于RRC_INACTIVE状态时,网络侧会通过专用信令给UE配置无线接入网(RAN,Radio Access Network)的寻呼区域,该RAN寻呼区域可以是一个小区或者多个小区。当UE在该区域内移动时不用通知网络侧,遵循空闲(idle)下移动性行为,即小区选择重选原则。当UE移动出RAN配置的寻呼区域时,会触发UE恢复RRC连接并重新获取RAN配置的寻呼区域。当UE有下行数据到达时,为UE保持RAN和核心网(CN,Core Network)之间连接的基站(如gNB)会触发RAN寻呼区域内的所有小区发送寻呼消息给UE,使得INACTIVCE状态的UE能够恢复RRC连接,进行数据接收。
所以UE从INACTIVE状态进入RRC连接状态,有三种情况:
一是,UE有下行数据到达,网络侧发起RAN侧的寻呼,促使UE进入连接状态;
二是,UE自身发起RAN位置区域更新,例如周期性RAN位置更新或者跨区域位置更新;
三是,UE有上行数据发送需求,促使UE进入连接状态。
为了支持更高的业务速率需求,网络侧支持双连接(DC,Dual Connectivity)或者多连接(MC,Multiple Connectivity)。对于DC/MC连接方式的UE也需要支持INACTIVE状态,DC/MC连接方式下的处于INACTIVE状态的UE如何准确恢复RRC连接是需要解决的问题。
发明内容
为解决上述技术问题,本发明实施例提供了一种恢复RRC连接的方法及装置、计算机存储介质。
本发明实施例提供的恢复RRC连接的方法,包括:
目标基站接收终端发送的RRC连接恢复请求消息;
所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
所述目标基站向所述终端发送RRC连接恢复消息,以使所述终端恢复RRC连接。
在本发明一实施方式中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
在本发明一实施方式中,所述终端接收到第一节点发送的寻呼消息后,所述目标基站接收所述终端发送的RRC连接恢复请求消息;
其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
在本发明一实施方式中,如果上行数据到达所述终端,则所述目标基站接收所述终端发送的RRC连接恢复请求消息。
在本发明一实施方式中,所述从所述第一节点获取UE上下文,包括:
所述目标基站向所述第一节点发送UE上下文请求消息,以使所述第一节点接收到所述UE上下文请求消息后,对所述UE上下文请求消息进行完整性保护验证,并在验证通过后从所述终端服务的第二节点获取所述第二节点侧的第二UE上下文;
所述目标基站接收所述第一节点发送的所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第一物理小区标识(PCI,Physical Cell Identifier),所述第一PCI为所述终端建议的第二节点的物理辅小区(Pscell,Physical secondary cell)的标识。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复辅小区组(SCG,Secondary Cell Group)部分的资源。
在本发明一实施方式中,所述方法还包括:
所述终端恢复完成RRC连接后,所述目标基站接收所述终端发送的RRC连接恢复完成消息。
在本发明一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
本发明实施例提供的恢复RRC连接的方法,包括:
终端向目标基站发送RRC连接恢复请求消息,以使所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
所述终端接收所述目标基站发送的RRC连接恢复消息后,恢复RRC连接。
在本发明一实施方式中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
在本发明一实施方式中,所述终端接收到第一节点发送的寻呼消息后,向所述目标基站发送RRC连接恢复请求消息;
其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
在本发明一实施方式中,如果上行数据到达所述终端,则所述终端向所述目标基站发送RRC连接恢复请求消息。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
在本发明一实施方式中,所述方法还包括:
所述终端恢复完成RRC连接后,向所述目标基站发送RRC连接恢复完成消息。
在本发明一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
本发明实施例提供的恢复RRC连接的方法,包括:
第一节点确定目标第二节点后,将SCG配置信息发送给所述目标第二节点,并配置新的所述目标第二节点侧的用于计算密钥的第一计算输入参数;
所述第一节点获取所述目标第二节点配置的所述目标第二节点侧的第一专用随机接入信道(RACH,Random Access Channel)资源后,向终端发送第一专用RACH资源和所述第一计算输入参数,以使所述终端基于所述第一专用RACH资源和所述第一计算输入参数,在所述目标第二节点侧发起随机接入过程。
在本发明一实施方式中,所述终端为处于第二种RRC非激活状态下的终端,所述第二种RRC非激活状态是指悬挂部分RRC连接后所述终端所处的状态,所述悬挂部分RRC连接是指悬挂SCG部分的资源。
在本发明一实施方式中,对于下行数据到达第二节点侧的情况,所述方法还包括:
所述第一节点接收第二节点发送的通知消息,所述通知消息用于通知所述第一节点有下行数据达到所述第二节点侧,以及所述下行数据对应承载的数据承载(DRB)标识信息;
所述第一节点接收所述第二节点发送的所述第二节点侧的第二UE上下文;其中,所述SCG配置信息至少包括所述第二节点侧的第二UE上下文。
在本发明一实施方式中,对于SCG承载对应的上行数据到达终端的情况,所述方法还包括:
所述第一节点接收所述终端发送的指示信息,所述指示信息用于向所述第一节点请求发起SCG侧资源的恢复。
在本发明一实施方式中,所述第一节点接收所述终端发送的指示信息,包括:
所述第一节点至少通过RRC信令、或者媒体接入控制控制元素(MAC CE),接收所述终端发送的指示信息。
在本发明一实施方式中,所述指示信息还携带所述第二节点侧小区的集合信息或者测量结果信息。
在本发明一实施方式中,所述第一节点确定目标第二节点,包括:
所述第一节点基于所述终端上报的测量结果,确定所述目标第二节点。
在本发明一实施方式中,所述向终端发送第一专用RACH资源和所述第一计算输入参数,包括:
通过信令或者MAC CE或者PDCCH order向所述终端发送第一专用RACH资源和所述第一计算输入参数。
在本发明一实施方式中,所述第一节点获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源时,还获取所述目标第二节点配置的所述目标第二节点侧的系统广播信息。
在本发明一实施方式中,所述方法还包括:
所述第一节点通过RRC信令向所述终端发送所述目标第二节点侧的系统广播信息。
在本发明一实施方式中,如果所述目标第二节点不配置所述目标第二节点侧的系统广播信息,且所述目标第二节点不是所述第二节点,则所述终端需要先读取系统广播信息后,再触发所述目标第二节点侧的随机接入过程。
在本发明一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的源辅节点,所述目标第二节点为双连接网络或者多连接网络中的目标辅节点。
本发明实施例提供的恢复RRC连接的装置,包括:
第一接收单元,用于接收终端发送的RRC连接恢复请求消息;
UE上下文获取单元,用于根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
发送单元,用于向所述终端发送RRC连接恢复消息,以使所述终端恢复RRC连接。
在本发明一实施方式中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
在本发明一实施方式中,所述终端接收到第一节点发送的寻呼消息后,所述第一接收单元接收所述终端发送的RRC连接恢复请求消息;
其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
在本发明一实施方式中,如果上行数据到达所述终端,则所述第一接收单元接收所述终端发送的RRC连接恢复请求消息。
在本发明一实施方式中,所述UE上下文获取单元,用于向所述第一节点发送UE上下文请求消息,以使所述第一节点接收到所述UE上下文请求消息后,对所述UE上下文请求消息进行完整性保护验证,并在验证通过后从所述终端服务的第二节点获取所述第二节点侧的第二UE上下文;接收所述第一节点发送的所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第一物理小区标识PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
在本发明一实施方式中,所述装置还包括:
第二接收单元,用于在所述终端恢复完成RRC连接后,接收所述终端发送的RRC连接恢复完成消息。
在本发明一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
本发明实施例提供的恢复RRC连接的装置,包括:
第一发送单元,用于向目标基站发送RRC连接恢复请求消息,以使所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
接收单元,用于接收所述目标基站发送的RRC连接恢复消息;
恢复单元,用于恢复RRC连接。
在本发明一实施方式中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
在本发明一实施方式中,所述终端接收到第一节点发送的寻呼消息后,所述第一发送单元向所述目标基站发送RRC连接恢复请求消息;
其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
在本发明一实施方式中,如果上行数据到达所述终端,则所述第一发送单元向所述目标基站发送RRC连接恢复请求消息。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。
在本发明一实施方式中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
在本发明一实施方式中,所述装置还包括:
第二发送单元,用于在恢复完成RRC连接后,向所述目标基站发送RRC连接恢复完成消息。
在本发明一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
本发明实施例提供的恢复RRC连接的装置,包括:
确定单元,用于确定目标第二节点;
第一发送单元,用于将SCG配置信息发送给所述目标第二节点;
配置单元,用于配置新的所述目标第二节点侧的用于计算密钥的第一计算输入参数;
获取单元,用于获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源;
第二发送单元,用于向终端发送第一专用RACH资源和所述第一计算输入参数,以使所述终端基于所述第一专用RACH资源和所述第一计算输入参数,在所述目标第二节点侧发起随机接入过程。
在本发明一实施方式中,所述终端为处于第二种RRC非激活状态下的终端,所述第二种RRC非激活状态是指悬挂部分RRC连接后所述终端所处的状态,所述悬挂部分RRC连接是指悬挂SCG部分的资源。
在本发明一实施方式中,对于下行数据到达第二节点侧的情况,所述装置还包括:
第一接收单元,用于接收第二节点发送的通知消息,所述通知消息用于通知所述第一节点有下行数据达到所述第二节点侧,以及所述下行数据对应承载的DRB标识信息;接收所述第二节点发送的所述第二节点侧的第二UE上下文;其中,所述SCG配置信息至少包括所述第二节点侧的第二UE上下文。
在本发明一实施方式中,对于SCG承载对应的上行数据到达终端的情况,所述装置还包括:
第二接收单元,用于接收所述终端发送的指示信息,所述指示信息用于向所述第一节点请求发起SCG侧资源的恢复。
在本发明一实施方式中,所述第二接收单元,用于至少通过RRC信令、或者MAC CE,接收所述终端发送的指示信息。
在本发明一实施方式中,所述指示信息还携带所述第二节点侧小区的集合信息或者测量结果信息。
在本发明一实施方式中,所述确定单元,用于基于所述终端上报的测量结果,确定所述目标第二节点。
在本发明一实施方式中,所述第二发送单元,用于通过信令或者MAC CE或者PDCCH order向所述终端发送第一专用RACH资源和所述第一计算输入参数。
在本发明一实施方式中,所述获取单元获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源时,还获取所述目标第二节点配置的所述目标第二节点侧的系统广播信息。
在本发明一实施方式中,,所述装置还包括:
第三发送单元,用于通过RRC信令向所述终端发送所述目标第二节点侧的系统广播信息。
在本发明一实施方式中,如果所述目标第二节点不配置所述目标第二节点侧的系统广播信息,且所述目标第二节点不是所述第二节点,则所述终端需要先读取系统广播信息后,再触发所述目标第二节点侧的随机接入过程。
在本发明一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的源辅节点,所述目标第二节点为双连接网络或者多连接网络中的目标辅节点。
本发明实施例提供的计算机存储介质,其上存储有计算机可执行指令,该计算机可执行指令被处理器执行时实现上述的恢复RRC连接的方法。
本发明实施例的技术方案中,1)目标基站接收终端发送的RRC连接恢复请求消息;所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;所述目标基站向所述终端发送RRC连接恢复消息,以使所述终端恢复RRC连接。2)第一节点确定目标第二节点后,将SCG配置信息发送给所述目标第二节点,并配置新的所述目标第二节点侧的用于计算密钥的第一计算输入参数;所述第一节点获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源后,向终端发送第一专用RACH资源和所述第一计算输入参数,以使所述终端基于所述第一专用RACH资源和所述第一计算输入参数,在所述目标第二节点侧发起随机接入过程。采用本发明实施例的技术方案,
支持UE进入完全RRC INACTIVE状态(本发明实施例称为第一种RRC非激活状态)和部分RRC INACTIVE状态(本发明实施例称为第二种RRC非激活状态),实现了
在两种RRC非激活状态下的RRC连接恢复过程,此外,实现了UE辅助网络侧快速准确选择SN的目的。
附图说明
此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1为RRC连接恢复过程的示意图;
图2为本发明实施例的恢复RRC连接的方法的流程示意图一;
图3为本发明实施例的恢复RRC连接的方法的流程示意图二;
图4为本发明实施例的恢复RRC连接的方法的流程示意图三;
图5为本发明实施例的恢复RRC连接的装置的结构组成示意图一;
图6为本发明实施例的恢复RRC连接的装置的结构组成示意图二;
图7为本发明实施例的恢复RRC连接的装置的结构组成示意图三;
图8为本发明实施例的计算机设备的结构组成示意图。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
本发明实施例的技术方案主要应用于5G移动通信系统,当然,本发明实施例的技术方案并不局限于5G移动通信系统,还可以应用于其他类型的移动通信系统。以下对5G移动通信系统中的主要应用场景进行说明:
1)eMBB场景:eMBB以用户获得多媒体内容、服务和数据为目标,其业务需求增长十分迅速。由于eMBB可能部署在不同的场景中,例如室内、市区、农村等,其业务能力和需求的差别也比较大,所以必须结合具体的部署场景对业务进行分析。
2)URLLC场景:URLLC的典型应用包括:工业自动化、电力自动化、远程医疗操作、交通安全保障等。
3)mMTC场景:URLLC的典型特点包括:高连接密度、小数据量、时延不敏感业务、模块的低成本和长使用寿命等。
以下对5G网络环境中的三种RRC状态进行说明:
1)RRC_IDLE状态:移动性为基于UE的小区选择重选,寻呼由CN发起,寻呼区域由CN配置。基站侧不存在UE AS上下文。不存在RRC连接。
2)RRC_CONNECTED状态:存在RRC连接,基站和UE存在UE AS上下文。网络侧知道UE的位置是具体小区级别的。移动性是网络侧控制的移动性。UE和基站之间可以传输单播数据。
3)RRC_INACTIVE状态:移动性为基于UE的小区选择重选,存在CN和RAN之间的连接,UE AS上下文存在某个基站上,寻呼由RAN触发,基于RAN的寻呼区域由RAN管理,网络侧知道UE的位置是基于RAN的寻呼区域级别的。
图1为RRC连接恢复过程的示意图,如图1所示,RRC连接恢复过程包括以下流程:
步骤101:UE处于INACTIVE状态,要恢复RRC连接。
步骤102:UE向gNB发送前导码(preamble)。
步骤103:gNB向UE发送随机接入响应(RAR,Random Access Response)。
步骤104:UE向gNB发送RRC恢复请求消息(RRC Connection Resume Request)。
步骤105:gNB向锚gNB(anchor gNB)索要UE上下文信息。
步骤106:gNB向UE发送RRC连接恢复消息(RRC Connection Resume)。
步骤107:UE进入RRC连接(RRC_CONNECTED)状态。
步骤108:UE向gNB发送RRC连接恢复完成消息(RRC Connection Resume Complete)。
本发明实施例的技术方案,定义了完全RRC连接悬挂以及部分RRC连接悬挂两个新概念,并使得网络侧和UE侧可以支持INACTIVE状态。值得说明的是,完全RRC 连接悬挂是指悬挂全部RRC连接,部分RRC连接悬挂是指悬挂部分RRC连接,进一步,所述悬挂部分RRC连接是指悬挂SCG部分的资源。相应地,执行完成悬挂全部RRC连接后,UE进入完全RRC INACTIVE状态(也可以称为第一INACTIVE状态),执行完成悬挂部分RRC连接后,UE进入部分RRC INACTIVE状态(也可以称为第二INACTIVE状态)。
图2为本发明实施例的恢复RRC连接的方法的流程示意图一,如图2所示,所述恢复RRC连接的方法包括以下步骤:
步骤201:目标基站接收终端发送的RRC连接恢复请求消息。
本发明实施例中,所述终端为处于第一种RRC非激活状态(也即完全RRC INACTIVE状态)下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
本发明实施例中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
本发明实施例中,终端发起RRC连接恢复过程的触发,可以通过以下方式:
方式一:所述终端接收到第一节点发送的寻呼消息后,所述目标基站接收所述终端发送的RRC连接恢复请求消息;其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
方式二:如果上行数据到达所述终端,则所述目标基站接收所述终端发送的RRC连接恢复请求消息。
在一实施方式中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
为了辅助目标基站准确快速决定第二节点,在一实施方式中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。在另一实施方式中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
步骤202:所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文。
本发明实施例中,所述从所述第一节点获取UE上下文,包括:
所述目标基站向所述第一节点发送UE上下文请求消息,以使所述第一节点接收到所述UE上下文请求消息后,对所述UE上下文请求消息进行完整性保护验证,并在验证通过后从所述终端服务的第二节点获取所述第二节点侧的第二UE上下文;
所述目标基站接收所述第一节点发送的所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文。
步骤203:所述目标基站向所述终端发送RRC连接恢复消息,以使所述终端恢复RRC连接。
本发明实施例中,所述终端恢复完成RRC连接后,所述目标基站接收所述终端发送的RRC连接恢复完成消息。
以下结合具体应用示例对本发明实施例的完全RRC INACTIVE状态下UE的恢复过程进行描述,以下实施例中,SN为第二节点,MN为第一节点。
1)如果是下行数据达到SN侧,则SN通知MN发起对于目标UE的寻呼过程;如果是下行数据达到MN侧,则MN会发起对于目标UE的寻呼过程;寻呼触发UE发起 RRC连接恢复过程。如果上行数据到达UE侧,则UE发起RRC连接恢复过程。
2)UE向目标基站发起RRC连接恢复请求消息(MSG3),可选的MSG3中可以携带一个指示,指示网络侧发起RRC恢复的原因,例如信令原因,上行数据到达,以及上行数据到达的DRB id信息。目标基站根据MSG3中的UE标识寻址服务的MN节点,并向服务的MN节点发送索要UE上下文请求的过程。MN收到该请求后,首先执行对于MSG3的完整性保护验证,验证通过后发起向服务的SN节点索要SN侧的UE上下文,并将MN和SN侧的UE上下文都发给目标基站。
3)为了辅助目标基站准确快速决定SN节点,则:
方式1:UE在MSG3中携带一个PCI,该PCI为UE建议的SN节点的Pscell.
方式2:UE在MSG3中携带一个指示,该指示用于指示MN是否需要恢复SCG部分的承载和资源。
4)目标基站发送RRC连接恢复消息(MSG4)给UE恢复RRC连接。同时MN向新的SN节点发送新密钥S-KgNB。
5)UE恢复完RRC连接后,发送RRC连接恢复完成消息。
图3为本发明实施例的恢复RRC连接的方法的流程示意图二,如图3所示,所述恢复RRC连接的方法包括以下步骤:
步骤301:终端向目标基站发送RRC连接恢复请求消息,以使所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文。
本发明实施例中,所述终端为处于第一种RRC非激活状态(也即完全RRC INACTIVE状态)下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
本发明实施例中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
本发明实施例中,终端发起RRC连接恢复过程的触发,可以通过以下方式:
方式一:所述终端接收到第一节点发送的寻呼消息后,向所述目标基站发送RRC连接恢复请求消息;其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
方式二:如果上行数据到达所述终端,则所述终端向所述目标基站发送RRC连接恢复请求消息。
在一实施方式中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
为了辅助目标基站准确快速决定第二节点,在一实施方式中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。在另一实施方式中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
步骤302:所述终端接收所述目标基站发送的RRC连接恢复消息后,恢复RRC连接。
本发明实施例中,所述终端恢复完成RRC连接后,向所述目标基站发送RRC连接恢复完成消息。
图4为本发明实施例的恢复RRC连接的方法的流程示意图三,如图4所示,所述恢复RRC连接的方法包括以下步骤:
步骤401:第一节点确定目标第二节点后,将SCG配置信息发送给所述目标第二节点,并配置新的所述目标第二节点侧的用于计算密钥的第一计算输入参数。
本发明实施例中,所述终端为处于第二种RRC非激活状态(也即部分RRC INACTIVE状态)下的终端,所述第二种RRC非激活状态是指悬挂部分RRC连接后所述终端所处的状态,所述悬挂部分RRC连接是指悬挂SCG部分的资源。
本发明以下实施例中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的源辅节点,所述目标第二节点为双连接网络或者多连接网络中的目标辅节点。
本发明实施例的方案可以分为如下两种场景:
场景一:对于下行数据到达第二节点侧的情况
所述第一节点接收第二节点发送的通知消息,所述通知消息用于通知所述第一节点有下行数据达到所述第二节点侧,以及所述下行数据对应承载的DRB标识信息;所述第一节点接收所述第二节点发送的所述第二节点侧的第二UE上下文;其中,所述SCG配置信息至少包括所述第二节点侧的第二UE上下文。
场景二:对于SCG承载对应的上行数据到达终端的情况
所述第一节点接收所述终端发送的指示信息,所述指示信息用于向所述第一节点请求发起SCG侧资源的恢复。
进一步,所述第一节点至少通过RRC信令、或者MAC CE,接收所述终端发送的指示信息。
在一实施方式中,所述指示信息还携带所述第二节点侧小区的集合信息或者测量结果信息。
本发明实施例中,所述第一节点基于所述终端上报的测量结果,确定所述目标第二节点。
步骤402:所述第一节点获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源后,向终端发送第一专用RACH资源和所述第一计算输入参数,以使所述终端基于所述第一专用RACH资源和所述第一计算输入参数,在所述目标第二节点侧发起随机接入过程。
本发明实施例中,所述第一节点通过信令或者MAC CE或者PDCCH order向所述终端发送第一专用RACH资源和所述第一计算输入参数。
在一实施方式中,所述第一节点获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源时,还获取所述目标第二节点配置的所述目标第二节点侧的系统广播信息。
基于此,所述第一节点通过RRC信令向所述终端发送所述目标第二节点侧的系统广播信息。
这里,如果所述目标第二节点不配置所述目标第二节点侧的系统广播信息,且所述目标第二节点不是所述第二节点,则所述终端需要先读取系统广播信息后,再触发所述目标第二节点侧的随机接入过程。
以下结合具体应用示例对本发明实施例的部分RRC INACTIVE状态下UE的恢复过程进行描述,以下实施例中,SN为第二节点,MN为第一节点,目标SN为目标第二节点。
场景一:下行数据到达SN侧
1)SN通知MN侧关于下行数据到达SN侧,并通知数据到达对应承载的DRB ID信息。同时SN会转发该UE在该SN侧的UE上下文信息给MN。
2)MN侧根据UE的测量上报结果,判决目标SN。MN会将SCG配置信息发送给 目标SN。同时MN配置新的目标SN侧用于计算密钥的计算输入参数counter给目标SN。3)目标SN同时配置目标SN侧小区的系统广播信息,以及配置Pscell上专用RACH资源给MN,用于MN配置给UE在目标SN侧进行随机接入过程。如果目标SN不配置息系统广播信息,且目标SN不是原来的SN,则需要UE首先读取系统广播信息然后再触发在目标SN侧的随机接入过程。
4)MN下发信令或者MAC CE或者PDCCH order配置UE在目标SN侧进行随机接入过程的专用RACH资源和目标SN侧用于密钥计算的输入参数counter。MN通过RRC信令配置目标SN的系统广播信息给UE。如果没有配置系统广播信息,则需要UE首先读取系统广播信息然后再触发在目标SN侧的随机接入过程。
5)UE在目标SN侧发起随机接入过程恢复SCG侧资源和SRB3。
场景二:SCG承载对应的上行数据到达UE侧
1)UE发送一个指示给MN侧关于发起SCG侧资源恢复的请求,该指示可以携带在RRC信令,或者MAC CE或者其他的信号。消息中还可以携带可选的SN侧小区的集合信息或者测量结果信息给MN侧。
2)MN侧根据UE的上报结果,判决目标SN。MN会将SCG配置信息发送给目标SN。同时MN配置新的目标SN侧用于计算密钥的计算输入参数counter给目标SN。
3)目标SN同时配置目标SN侧小区的系统广播信息,以及配置Pscell上专用RACH资源给MN,用于MN配置给UE在目标SN侧进行随机接入过程。如果目标SN不配置息系统广播信息,且目标SN不是原来的SN,则需要UE首先读取系统广播信息然后再触发在目标侧的随机接入过程。
4)MN下发信令或者MAC CE或者PDCCH order配置UE在目标SN侧进行随机接入过程的专用RACH资源和目标SN侧用于密钥计算的输入参数counter。MN通过RRC信令配置目标SN的系统广播信息给UE。如果没有配置系统广播信息,则需要UE首先读取系统广播信息然后再触发在目标侧的随机接入过程。
5)UE在目标SN侧发起随机接入过程恢复SCG侧资源和SRB3。
图5为本发明实施例的恢复RRC连接的装置的结构组成示意图一,如图5所示,所述恢复RRC连接的装置包括:
第一接收单元501,用于接收终端发送的RRC连接恢复请求消息;
UE上下文获取单元502,用于根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
发送单元503,用于向所述终端发送RRC连接恢复消息,以使所述终端恢复RRC连接。
在一实施方式中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
在一实施方式中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
在一实施方式中,所述终端接收到第一节点发送的寻呼消息后,所述第一接收单元501接收所述终端发送的RRC连接恢复请求消息;
其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
在一实施方式中,如果上行数据到达所述终端,则所述第一接收单元501接收所述终端发送的RRC连接恢复请求消息。
在一实施方式中,所述UE上下文获取单元502,用于向所述第一节点发送UE上下文请求消息,以使所述第一节点接收到所述UE上下文请求消息后,对所述UE上下文请求消息进行完整性保护验证,并在验证通过后从所述终端服务的第二节点获取所述第二节点侧的第二UE上下文;接收所述第一节点发送的所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文。
在一实施方式中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。
在一实施方式中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
在一实施方式中,所述装置还包括:
第二接收单元504,用于在所述终端恢复完成RRC连接后,接收所述终端发送的RRC连接恢复完成消息。
在一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
本领域技术人员应当理解,图5所示的恢复RRC连接的装置中的各单元的实现功能可参照前述恢复RRC连接的方法的相关描述而理解。图5所示的恢复RRC连接的装置中的各单元的功能可通过运行于处理器上的程序而实现,也可通过具体的逻辑电路而实现。
图6为本发明实施例的恢复RRC连接的装置的结构组成示意图二,如图6所示,所述恢复RRC连接的装置包括:
第一发送单元601,用于向目标基站发送RRC连接恢复请求消息,以使所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
接收单元602,用于接收所述目标基站发送的RRC连接恢复消息;
恢复单元603,用于恢复RRC连接。
在一实施方式中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
在一实施方式中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
在一实施方式中,所述终端接收到第一节点发送的寻呼消息后,所述第一发送单元601向所述目标基站发送RRC连接恢复请求消息;
其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
在一实施方式中,如果上行数据到达所述终端,则所述第一发送单元601向所述目标基站发送RRC连接恢复请求消息。
在一实施方式中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。
在一实施方式中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
在一实施方式中,所述装置还包括:
第二发送单元604,用于在恢复完成RRC连接后,向所述目标基站发送RRC连接恢复完成消息。
在一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
本领域技术人员应当理解,图6所示的恢复RRC连接的装置中的各单元的实现功能可参照前述恢复RRC连接的方法的相关描述而理解。图6所示的恢复RRC连接的装置中的各单元的功能可通过运行于处理器上的程序而实现,也可通过具体的逻辑电路而实现。
图7为本发明实施例的恢复RRC连接的装置的结构组成示意图三,如图7所示,所述恢复RRC连接的装置包括:
确定单元701,用于确定目标第二节点;
第一发送单元702,用于将SCG配置信息发送给所述目标第二节点;
配置单元703,用于配置新的所述目标第二节点侧的用于计算密钥的第一计算输入参数;
获取单元704,用于获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源;
第二发送单元705,用于向终端发送第一专用RACH资源和所述第一计算输入参数,以使所述终端基于所述第一专用RACH资源和所述第一计算输入参数,在所述目标第二节点侧发起随机接入过程。
在一实施方式中,所述终端为处于第二种RRC非激活状态下的终端,所述第二种RRC非激活状态是指悬挂部分RRC连接后所述终端所处的状态,所述悬挂部分RRC连接是指悬挂SCG部分的资源。
在一实施方式中,对于下行数据到达第二节点侧的情况,所述装置还包括:
第一接收单元706,用于接收第二节点发送的通知消息,所述通知消息用于通知所述第一节点有下行数据达到所述第二节点侧,以及所述下行数据对应承载的DRB标识信息;接收所述第二节点发送的所述第二节点侧的第二UE上下文;其中,所述SCG配置信息至少包括所述第二节点侧的第二UE上下文。
在一实施方式中,对于SCG承载对应的上行数据到达终端的情况,所述装置还包括:
第二接收单元707,用于接收所述终端发送的指示信息,所述指示信息用于向所述第一节点请求发起SCG侧资源的恢复。
在一实施方式中,所述第二接收单元707,用于至少通过RRC信令、或者MAC CE,接收所述终端发送的指示信息。
在一实施方式中,所述指示信息还携带所述第二节点侧小区的集合信息或者测量结果信息。
在一实施方式中,所述确定单元701,用于基于所述终端上报的测量结果,确定所述目标第二节点。
在一实施方式中,所述第二发送单元705,用于通过信令或者MAC CE或者PDCCH order向所述终端发送第一专用RACH资源和所述第一计算输入参数。
在一实施方式中,所述获取单元704获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源时,还获取所述目标第二节点配置的所述目标第二节点侧的系统广播信息。
在一实施方式中,所述装置还包括:
第三发送单元708,用于通过RRC信令向所述终端发送所述目标第二节点侧的系统广播信息。
在一实施方式中,如果所述目标第二节点不配置所述目标第二节点侧的系统广播信 息,且所述目标第二节点不是所述第二节点,则所述终端需要先读取系统广播信息后,再触发所述目标第二节点侧的随机接入过程。
在一实施方式中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的源辅节点,所述目标第二节点为双连接网络或者多连接网络中的目标辅节点。
本领域技术人员应当理解,图7所示的恢复RRC连接的装置中的各单元的实现功能可参照前述恢复RRC连接的方法的相关描述而理解。图7所示的恢复RRC连接的装置中的各单元的功能可通过运行于处理器上的程序而实现,也可通过具体的逻辑电路而实现。
本发明实施例上述恢复RRC连接的装置如果以软件功能模块的形式实现并作为独立的产品销售或使用时,也可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read Only Memory)、磁碟或者光盘等各种可以存储程序代码的介质。这样,本发明实施例不限制于任何特定的硬件和软件结合。
相应地,本发明实施例还提供一种计算机存储介质,其中存储有计算机可执行指令,该计算机可执行指令被处理器执行时实现本发明实施例的上述恢复RRC连接的方法。
图8为本发明实施例的计算机设备的结构组成示意图,该计算机设备可以是终端,也可以是网络设备。如图8所示,计算机设备100可以包括一个或多个(图中仅示出一个)处理器1002(处理器1002可以包括但不限于微处理器(MCU,Micro Controller Unit)或可编程逻辑器件(FPGA,Field Programmable Gate Array)等的处理装置)、用于存储数据的存储器1004、以及用于通信功能的传输装置1006。本领域普通技术人员可以理解,图8所示的结构仅为示意,其并不对上述电子装置的结构造成限定。例如,计算机设备100还可包括比图8中所示更多或者更少的组件,或者具有与图8所示不同的配置。
存储器1004可用于存储应用软件的软件程序以及模块,如本发明实施例中的方法对应的程序指令/模块,处理器1002通过运行存储在存储器1004内的软件程序以及模块,从而执行各种功能应用以及数据处理,即实现上述的方法。存储器1004可包括高速随机存储器,还可包括非易失性存储器,如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中,存储器1004可进一步包括相对于处理器1002远程设置的存储器,这些远程存储器可以通过网络连接至计算机设备100。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置1006用于经由一个网络接收或者发送数据。上述的网络具体实例可包括计算机设备100的通信供应商提供的无线网络。在一个实例中,传输装置1006包括一个网络适配器(NIC,Network Interface Controller),其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中,传输装置1006可以为射频(RF,Radio Frequency)模块,其用于通过无线方式与互联网进行通讯。
本发明实施例所记载的技术方案之间,在不冲突的情况下,可以任意组合。
在本发明所提供的几个实施例中,应该理解到,所揭露的方法和智能设备,可以通过其它的方式实现。以上所描述的设备实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,如:多个单元或组件可以结合,或可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,所显示或讨论的各组成部分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口,设 备或单元的间接耦合或通信连接,可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的,作为单元显示的部件可以是、或也可以不是物理单元,即可以位于一个地方,也可以分布到多个网络单元上;可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外,在本发明各实施例中的各功能单元可以全部集成在一个第二处理单元中,也可以是各单元分别单独作为一个单元,也可以两个或两个以上单元集成在一个单元中;上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能单元的形式实现。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。

Claims (63)

  1. 一种恢复无线资源控制RRC连接的方法,所述方法包括:
    目标基站接收终端发送的RRC连接恢复请求消息;
    所述目标基站根据所述RRC连接恢复请求消息中的用户设备UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
    所述目标基站向所述终端发送RRC连接恢复消息,以使所述终端恢复RRC连接。
  2. 根据权利要求1所述的方法,其中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
  3. 根据权利要求1或2所述的方法,其中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
  4. 根据权利要求1至3任一项所述的方法,其中,所述终端接收到第一节点发送的寻呼消息后,所述目标基站接收所述终端发送的RRC连接恢复请求消息;
    其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
  5. 根据权利要求1至3任一项所述的方法,其中,如果上行数据到达所述终端,则所述目标基站接收所述终端发送的RRC连接恢复请求消息。
  6. 根据权利要求1至5任一项所述的方法,其中,所述从所述第一节点获取UE上下文,包括:
    所述目标基站向所述第一节点发送UE上下文请求消息,以使所述第一节点接收到所述UE上下文请求消息后,对所述UE上下文请求消息进行完整性保护验证,并在验证通过后从所述终端服务的第二节点获取所述第二节点侧的第二UE上下文;
    所述目标基站接收所述第一节点发送的所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文。
  7. 根据权利要求1至6任一项所述的方法,其中,所述RRC连接恢复请求消息中携带第一物理小区标识PCI,所述第一PCI为所述终端建议的第二节点的物理辅小区Pscell的标识。
  8. 根据权利要求1至7任一项所述的方法,其中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复辅小区组SCG部分的资源。
  9. 根据权利要求1至8任一项所述的方法,其中,所述方法还包括:
    所述终端恢复完成RRC连接后,所述目标基站接收所述终端发送的RRC连接恢复完成消息。
  10. 根据权利要求1至9任一项所述的方法,其中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
  11. 一种恢复RRC连接的方法,所述方法包括:
    终端向目标基站发送RRC连接恢复请求消息,以使所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
    所述终端接收所述目标基站发送的RRC连接恢复消息后,恢复RRC连接。
  12. 根据权利要求11所述的方法,其中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
  13. 根据权利要求11或12所述的方法,其中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
  14. 根据权利要求11至13任一项所述的方法,其中,所述终端接收到第一节点发送的寻呼消息后,向所述目标基站发送RRC连接恢复请求消息;
    其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
  15. 根据权利要求11至13任一项所述的方法,其中,如果上行数据到达所述终端,则所述终端向所述目标基站发送RRC连接恢复请求消息。
  16. 根据权利要求11至15任一项所述的方法,其中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。
  17. 根据权利要求11至16任一项所述的方法,其中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
  18. 根据权利要求11至17任一项所述的方法,其中,所述方法还包括:
    所述终端恢复完成RRC连接后,向所述目标基站发送RRC连接恢复完成消息。
  19. 根据权利要求11至18任一项所述的方法,其中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
  20. 一种恢复RRC连接的方法,所述方法包括:
    第一节点确定目标第二节点后,将SCG配置信息发送给所述目标第二节点,并配置新的所述目标第二节点侧的用于计算密钥的第一计算输入参数;
    所述第一节点获取所述目标第二节点配置的所述目标第二节点侧的第一专用随机接入信道RACH资源后,向终端发送第一专用RACH资源和所述第一计算输入参数,以使所述终端基于所述第一专用RACH资源和所述第一计算输入参数,在所述目标第二节点侧发起随机接入过程。
  21. 根据权利要求20所述的方法,其中,所述终端为处于第二种RRC非激活状态下的终端,所述第二种RRC非激活状态是指悬挂部分RRC连接后所述终端所处的状态,所述悬挂部分RRC连接是指悬挂SCG部分的资源。
  22. 根据权利要求20或21所述的方法,其中,对于下行数据到达第二节点侧的情况,所述方法还包括:
    所述第一节点接收第二节点发送的通知消息,所述通知消息用于通知所述第一节点有下行数据达到所述第二节点侧,以及所述下行数据对应承载的数据承载DRB标识信息;
    所述第一节点接收所述第二节点发送的所述第二节点侧的第二UE上下文;其中,所述SCG配置信息至少包括所述第二节点侧的第二UE上下文。
  23. 根据权利要求20或21所述的方法,其中,对于SCG承载对应的上行数据到达终端的情况,所述方法还包括:
    所述第一节点接收所述终端发送的指示信息,所述指示信息用于向所述第一节点请求发起SCG侧资源的恢复。
  24. 根据权利要求23所述的方法,其中,所述第一节点接收所述终端发送的指示信息,包括:
    所述第一节点至少通过RRC信令、或者媒体访问控制控制元素MAC CE,接收所述终端发送的指示信息。
  25. 根据权利要求23或24所述的方法,其中,所述指示信息还携带所述第二节点侧小区的集合信息或者测量结果信息。
  26. 根据权利要求20至25任一项所述的方法,其中,所述第一节点确定目标第二节点,包括:
    所述第一节点基于所述终端上报的测量结果,确定所述目标第二节点。
  27. 根据权利要求20至26任一项所述的方法,其中,所述向终端发送第一专用RACH资源和所述第一计算输入参数,包括:
    通过信令或者MAC CE或者PDCCH order向所述终端发送第一专用RACH资源和所述第一计算输入参数。
  28. 根据权利要求20至27任一项所述的方法,其中,所述第一节点获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源时,还获取所述目标第二节点配置的所述目标第二节点侧的系统广播信息。
  29. 根据权利要求28所述的方法,其中,所述方法还包括:
    所述第一节点通过RRC信令向所述终端发送所述目标第二节点侧的系统广播信息。
  30. 根据权利要求20至27任一项所述的方法,其中,如果所述目标第二节点不配置所述目标第二节点侧的系统广播信息,且所述目标第二节点不是所述第二节点,则所述终端需要先读取系统广播信息后,再触发所述目标第二节点侧的随机接入过程。
  31. 根据权利要求20至30任一项所述的方法,其中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的源辅节点,所述目标第二节点为双连接网络或者多连接网络中的目标辅节点。
  32. 一种恢复RRC连接的装置,所述装置包括:
    第一接收单元,用于接收终端发送的RRC连接恢复请求消息;
    UE上下文获取单元,用于根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
    发送单元,用于向所述终端发送RRC连接恢复消息,以使所述终端恢复RRC连接。
  33. 根据权利要求32所述的装置,其中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
  34. 根据权利要求32或33所述的装置,其中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
  35. 根据权利要求32至34任一项所述的装置,其中,所述终端接收到第一节点发送的寻呼消息后,所述第一接收单元接收所述终端发送的RRC连接恢复请求消息;
    其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
  36. 根据权利要求32至34任一项所述的装置,其中,如果上行数据到达所述终 端,则所述第一接收单元接收所述终端发送的RRC连接恢复请求消息。
  37. 根据权利要求32至36任一项所述的装置,其中,所述UE上下文获取单元,用于向所述第一节点发送UE上下文请求消息,以使所述第一节点接收到所述UE上下文请求消息后,对所述UE上下文请求消息进行完整性保护验证,并在验证通过后从所述终端服务的第二节点获取所述第二节点侧的第二UE上下文;接收所述第一节点发送的所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文。
  38. 根据权利要求32至37任一项所述的装置,其中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。
  39. 根据权利要求32至38任一项所述的装置,其中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
  40. 根据权利要求32至39任一项所述的装置,其中,所述装置还包括:
    第二接收单元,用于在所述终端恢复完成RRC连接后,接收所述终端发送的RRC连接恢复完成消息。
  41. 根据权利要求32至40任一项所述的装置,其中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
  42. 一种恢复RRC连接的装置,所述装置包括:
    第一发送单元,用于向目标基站发送RRC连接恢复请求消息,以使所述目标基站根据所述RRC连接恢复请求消息中的UE标识,确定所述终端服务的第一节点,并从所述第一节点获取UE上下文,所述UE上下文包括所述第一节点侧的第一UE上下文和第二节点侧的第二UE上下文;
    接收单元,用于接收所述目标基站发送的RRC连接恢复消息;
    恢复单元,用于恢复RRC连接。
  43. 根据权利要求42所述的装置,其中,所述终端为处于第一种RRC非激活状态下的终端,所述第一种RRC非激活状态是指悬挂全部RRC连接后所述终端所处的状态。
  44. 根据权利要求42或43所述的装置,其中,所述RRC连接恢复请求消息中携带第一指示信息,所述第一指示信息用于指示网络侧发起RRC连接恢复的原因。
  45. 根据权利要求42至44任一项所述的装置,其中,所述终端接收到第一节点发送的寻呼消息后,所述第一发送单元向所述目标基站发送RRC连接恢复请求消息;
    其中,如果下行数据达到所述第二节点,则所述第二节点通知所述第一节点发起对所述终端的寻呼;如果下行数据达到所述第一节点,则所述第一节点发起对所述终端的寻呼;所述寻呼用于触发所述终端发起RRC连接恢复过程。
  46. 根据权利要求42至44任一项所述的装置,其中,如果上行数据到达所述终端,则所述第一发送单元向所述目标基站发送RRC连接恢复请求消息。
  47. 根据权利要求42至46任一项所述的装置,其中,所述RRC连接恢复请求消息中携带第一PCI,所述第一PCI为所述终端建议的第二节点的Pscell的标识。
  48. 根据权利要求42至47任一项所述的装置,其中,所述RRC连接恢复请求消息中携带第二指示信息,所述第二指示信息用于所述第一节点是否需要恢复SCG部分的资源。
  49. 根据权利要求42至48任一项所述的装置,其中,所述装置还包括:
    第二发送单元,用于在恢复完成RRC连接后,向所述目标基站发送RRC连接恢复完成消息。
  50. 根据权利要求42至49任一项所述的装置,其中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的辅节点。
  51. 一种恢复RRC连接的装置,所述装置包括:
    确定单元,用于确定目标第二节点;
    第一发送单元,用于将SCG配置信息发送给所述目标第二节点;
    配置单元,用于配置新的所述目标第二节点侧的用于计算密钥的第一计算输入参数;
    获取单元,用于获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源;
    第二发送单元,用于向终端发送第一专用RACH资源和所述第一计算输入参数,以使所述终端基于所述第一专用RACH资源和所述第一计算输入参数,在所述目标第二节点侧发起随机接入过程。
  52. 根据权利要求51所述的装置,其中,所述终端为处于第二种RRC非激活状态下的终端,所述第二种RRC非激活状态是指悬挂部分RRC连接后所述终端所处的状态,所述悬挂部分RRC连接是指悬挂SCG部分的资源。
  53. 根据权利要求51或52所述的装置,其中,对于下行数据到达第二节点侧的情况,所述装置还包括:
    第一接收单元,用于接收第二节点发送的通知消息,所述通知消息用于通知所述第一节点有下行数据达到所述第二节点侧,以及所述下行数据对应承载的DRB标识信息;接收所述第二节点发送的所述第二节点侧的第二UE上下文;其中,所述SCG配置信息至少包括所述第二节点侧的第二UE上下文。
  54. 根据权利要求51或52所述的装置,其中,对于SCG承载对应的上行数据到达终端的情况,所述装置还包括:
    第二接收单元,用于接收所述终端发送的指示信息,所述指示信息用于向所述第一节点请求发起SCG侧资源的恢复。
  55. 根据权利要求54所述的装置,其中,所述第二接收单元,用于至少通过RRC信令、或者MAC CE,接收所述终端发送的指示信息。
  56. 根据权利要求54或55所述的装置,其中,所述指示信息还携带所述第二节点侧小区的集合信息或者测量结果信息。
  57. 根据权利要求51至56任一项所述的装置,其中,所述确定单元,用于基于所述终端上报的测量结果,确定所述目标第二节点。
  58. 根据权利要求51至57任一项所述的装置,其中,所述第二发送单元,用于通过信令或者MAC CE或者PDCCH order向所述终端发送第一专用RACH资源和所述第一计算输入参数。
  59. 根据权利要求51至58任一项所述的装置,其中,所述获取单元获取所述目标第二节点配置的所述目标第二节点侧的第一专用RACH资源时,还获取所述目标第二节点配置的所述目标第二节点侧的系统广播信息。
  60. 根据权利要求59所述的装置,其中,所述装置还包括:
    第三发送单元,用于通过RRC信令向所述终端发送所述目标第二节点侧的系统广播信息。
  61. 根据权利要求51至58任一项所述的装置,其中,如果所述目标第二节点不配置所述目标第二节点侧的系统广播信息,且所述目标第二节点不是所述第二节点,则所述终端需要先读取系统广播信息后,再触发所述目标第二节点侧的随机接入过 程。
  62. 根据权利要求51至61任一项所述的装置,其中,所述第一节点为双连接网络或者多连接网络中的主节点,所述第二节点为双连接网络或者多连接网络中的源辅节点,所述目标第二节点为双连接网络或者多连接网络中的目标辅节点。
  63. 一种计算机存储介质,其上存储有计算机可执行指令,该计算机可执行指令被处理器执行时实现权利要求1至10任一项所述的方法步骤,或者权利要求11至19任一项所述的方法步骤,权利要求20至31任一项所述的方法步骤。
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JP7128897B6 (ja) 2022-10-04
AU2018422296A1 (en) 2020-10-01
CN112040567B (zh) 2023-05-09
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US20230309000A1 (en) 2023-09-28
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CA3093484A1 (en) 2019-11-14
US20200396675A1 (en) 2020-12-17
BR112020018971A2 (pt) 2021-01-19
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