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WO2021081875A1 - Procédé et dispositif de commande d'état de connexion rrc, et support de stockage - Google Patents

Procédé et dispositif de commande d'état de connexion rrc, et support de stockage Download PDF

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Publication number
WO2021081875A1
WO2021081875A1 PCT/CN2019/114643 CN2019114643W WO2021081875A1 WO 2021081875 A1 WO2021081875 A1 WO 2021081875A1 CN 2019114643 W CN2019114643 W CN 2019114643W WO 2021081875 A1 WO2021081875 A1 WO 2021081875A1
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WO
WIPO (PCT)
Prior art keywords
sidelink
terminal
timer
destination identifier
base station
Prior art date
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Ceased
Application number
PCT/CN2019/114643
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English (en)
Chinese (zh)
Inventor
杨星
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Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2019/114643 priority Critical patent/WO2021081875A1/fr
Priority to CN201980002766.4A priority patent/CN110945959B/zh
Publication of WO2021081875A1 publication Critical patent/WO2021081875A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Definitions

  • the present disclosure relates to the field of wireless communication technology, and in particular to a method, device and storage medium for controlling an RRC connection state.
  • RRC Radio Resource Control
  • RRC connections there are two main methods for releasing RRC connections.
  • One is that the network sends an RRC connection release message to the terminal to trigger the terminal to release the RRC connection.
  • the other is that the terminal starts an inactivity timer. When the timeout expires, the RRC connection is automatically released.
  • the present disclosure provides an RRC connection state control method, device and storage medium.
  • the technical solution is as follows:
  • an RRC connection state control method the method is executed by a terminal, and the method includes:
  • the sidelink state is the first state
  • the RRC connection between the terminal and the base station is released;
  • the first state means that there is no sidelink destination identifier in the terminal, or the terminal sends to the terminal last time There is no sidelink destination identifier in the sidelinkUEInformation of the base station.
  • the method further includes:
  • the second state refers to the presence of a sidelink destination identifier in the terminal, or the presence of a sidelink destination identifier in the directly connected communication terminal information sidelinkUEInformation that the terminal sends to the base station last time.
  • the method before the obtaining the direct communication sidelink status of the terminal, the method further includes:
  • the sidelink UEInformation used to instruct to delete the sidelink destination identifier in the terminal is sent to the base station; the sidelink UEInformation used to instruct to delete the sidelink destination identifier in the terminal does not have a sidelink destination identifier.
  • the sidelink timer runs in the access layer of the terminal and is triggered when the terminal sends a sidelink MAC layer protocol data unit PDU or a sidelink MAC layer SDU.
  • deleting the sidelink destination identifier in the terminal includes:
  • the method further includes:
  • the access layer starts or updates the sidelink timer according to the sidelink timer configuration information.
  • the obtaining sidelink timer configuration information includes:
  • RRC signaling includes dedicated signaling and broadcast messages.
  • the sidelink timer is a timer that runs in a higher layer of the terminal and is triggered to start or restart when the higher layer sends sidelink data;
  • deleting the sidelink destination identifier in the terminal includes:
  • the higher layer determines whether to delete the sidelink destination identifier in the terminal according to the service attribute of the sidelink service in the terminal;
  • the sidelink destination identifier in the terminal is deleted according to the deletion instruction.
  • the method before the detecting by the higher layer whether the sidelink timer expires, the method further includes:
  • the high layer When the high layer sends sidelink data, the high layer starts or updates the sidelink timer according to the sidelink timer configuration information.
  • an RRC connection state control device the device is used in a terminal, and the device includes:
  • a status acquisition module configured to acquire the direct communication sidelink status of the terminal if the inactivity timer in the terminal expires
  • the connection release module is configured to release the RRC connection between the terminal and the base station when the sidelink state is the first state; the first state means that there is no sidelink destination identifier in the terminal, or the There is no sidelink destination identifier in the sidelinkUEInformation sent by the terminal to the base station last time.
  • the device further includes:
  • a connection maintaining module configured to maintain the RRC connection between the terminal and the base station when the sidelink state is the second state
  • the second state refers to the presence of a sidelink destination identifier in the terminal, or the presence of a sidelink destination identifier in the directly connected communication terminal information sidelinkUEInformation that the terminal sends to the base station last time.
  • the device further includes:
  • An identifier deletion module configured to delete the sidelink destination identifier in the terminal if the sidelink timer expires before acquiring the direct communication sidelink status of the terminal;
  • the message sending module is configured to send the sidelink UEInformation for instructing to delete the sidelink destination identifier in the terminal to the base station; the sidelink UEInformation for instructing to delete the sidelink destination identifier in the terminal does not have the sidelink destination identifier.
  • the identifier deletion module includes:
  • the first timeout detection submodule is used to trigger the start or restart when the sidelink timer is running in the access layer of the terminal and the terminal sends a sidelink MAC layer protocol data unit PDU or a sidelink MAC layer SDU The timer; through the access layer to detect whether the sidelink timer expires;
  • the first identifier deletion submodule is configured to delete the sidelink destination identifier in the terminal through the access layer if the sidelink timer expires.
  • the device further includes:
  • Configuration information obtaining module used to obtain sidelink timer configuration information
  • the timer starting module is used to start or update the sidelink timer according to the sidelink timer configuration information through the access layer when the terminal sends the sidelink MAC layer PDU or the sidelink MAC layer SDU.
  • the configuration information acquisition module is used to:
  • RRC signaling includes dedicated signaling and broadcast messages.
  • the identifier deletion module includes:
  • the second timeout detection sub-module is configured to detect the sidelink by the higher layer when the sidelink timer is running in the upper layer of the terminal, and when the higher layer sends the sidelink data, the start or restart timer is triggered. Whether the timer expires;
  • the deletion confirmation sub-module is configured to determine whether to delete the sidelink destination identifier in the terminal according to the service attribute of the sidelink service in the terminal through the high layer if the sidelink timer expires;
  • An instruction sending submodule which is used to send a deletion instruction to the access layer through the higher layer when it is determined to delete the sidelink destination identifier in the terminal;
  • the second identifier deletion submodule is configured to delete the sidelink destination identifier in the terminal according to the deletion instruction through the access layer.
  • the identifier deletion module includes:
  • the configuration information sending submodule is configured to send sidelink timer configuration information to the higher layer through the terminal's access layer;
  • the timer start submodule is used to start or update the sidelink timer by the higher layer according to the sidelink timer configuration information when the higher layer sends sidelink data.
  • an RRC connection state control device the device is used in a terminal, and the device includes:
  • a memory for storing executable instructions of the processor
  • the processor is configured to:
  • the sidelink state is the first state
  • the RRC connection between the terminal and the base station is released;
  • the first state means that there is no sidelink destination identifier in the terminal, or the terminal sends to the terminal last time There is no sidelink destination identifier in the sidelinkUEInformation of the base station.
  • a computer-readable storage medium contains executable instructions, and a processor in a terminal invokes the executable instructions to implement the above-mentioned first aspect Or the RRC connection state control method described in any optional implementation manner of the first aspect.
  • the direct communication sidelink state of the terminal is acquired, where the sidelink state includes the first state or the second state, and the first state means that there is no sidelink destination identifier in the terminal, or There is no sidelink destination identifier in the sidelinkUEInformation sent to the base station at one time; the second state refers to the presence of the sidelink destination identifier in the terminal, or the direct communication terminal information sidelink UEInformation that the terminal sends to the base station last time contains the sidelink destination identifier, when the sidelink status is In the first state, the RRC connection between the terminal and the base station is released.
  • the RRC connection status can be stably maintained during the sidelink data transmission and reception process, avoiding repeated RRC connection establishment and release, and improving the efficiency of data transmission .
  • FIG. 1 is a schematic diagram of an implementation environment provided by an embodiment of the present disclosure
  • FIG. 2 is a method flowchart of a method for controlling an RRC connection state provided by an embodiment of the present disclosure
  • FIG. 3 is a method flowchart of an RRC connection state control method provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of an RRC keeping connection involved in the embodiment shown in FIG. 3;
  • FIG. 5 is a schematic diagram of an RRC connection release involved in the embodiment shown in FIG. 3;
  • Fig. 6 is a block diagram of an RRC connection state control device provided by an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure.
  • Radio Resource Control Radio Resource Control
  • RRC handles the third layer information of the control plane between the terminal and the radio access network.
  • RRC is mainly used to establish a signaling link between the terminal and the wireless access network, and allocate and manage wireless resources.
  • the terminal To communicate with the wireless access network, the terminal first needs to establish an RRC link, and then can transmit non-access layer signaling.
  • RRC connection release message to the network.
  • the terminal can release the RRC connection after receiving the message.
  • the other is that the base station configures an inactivity timer for the terminal. When the timer expires, the terminal automatically releases the RRC connection.
  • the inactivity timer In the configured duration of the inactivity timer, if the inactivity timer is not triggered to restart, the inactivity timer expires. In other words, if no data or control signaling is sent for a period of time, the terminal will automatically release the RRC connection.
  • Sidelink technology is a near field communication technology in which terminals directly connect information through a wireless interface between each other.
  • a base station can have multiple cells and control the sidelink radio resources of multiple cells.
  • the base station can configure the corresponding sidelink resource pool for the terminal according to the cell where the terminal is located.
  • the base station dynamic scheduling method and the method independently selected by the terminal can be adopted.
  • the terminal in the base station dynamic scheduling mode, the terminal can report its own buffer data to the base station where it is located, and the base station dynamically allocates available sidelink radio resources to the terminal according to the report buffer data of the terminal. In this way, the terminal needs to always maintain a connection with the base station.
  • FIG. 1 shows a schematic diagram of an implementation environment provided by an embodiment of the present disclosure.
  • the implementation environment may include a base station 110 and a terminal 120.
  • the terminal 120 may be a wireless communication device that supports multiple wireless access technologies for sidelink transmission.
  • the terminal 120 can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the terminals 120 can communicate directly with each other, and the terminal 120 can be an Internet of Things terminal, such as a sensor device or a mobile device.
  • Telephones (or "cellular" phones) and computers with Internet of Things terminals, for example, can be fixed, portable, pocket-sized, handheld, computer built-in or vehicle-mounted devices.
  • station Station, STA
  • subscriber unit Subscriber unit
  • Subscriber station Subscriber Station
  • mobile station Mobile Station
  • Mobile mobile station
  • Remote station Remote Terminal
  • Access Terminal User Terminal
  • User Agent User Device
  • UE User Equipment
  • the terminal 120 may also be a device of an unmanned aerial vehicle.
  • the base station 110 may be a network side device in a wireless communication system.
  • the wireless communication system may be a 5G system, also known as a New Radio (NR) system.
  • the wireless communication system may also be the next-generation system of the 5G system.
  • the base station 120 may be a base station (gNB) adopting a centralized and distributed architecture in the 5G system.
  • the base station 120 adopts a centralized distributed architecture it usually includes a centralized unit (Central Unit, CU) and at least two distributed units (Distributed Unit, DU).
  • the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a media access control (Media Access Control, MAC) layer protocol stack; distribution
  • the unit is provided with a physical (Physical, PHY) layer protocol stack, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 110.
  • a wireless connection can be established between the base station 110 and the terminal 120 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or, the wireless air interface can also be a next-generation mobile based on 5G.
  • 5G fifth-generation mobile communication network technology
  • the wireless air interface of the communication network technology standard is a wireless air interface based on the fifth-generation mobile communication network technology standard.
  • the embodiment of the present disclosure provides an RRC connection state control method. Please refer to FIG. 2, which shows a method flowchart of an RRC connection state control method provided by an embodiment of the present disclosure.
  • the RRC connection state control method may be applied to the implementation environment shown in FIG. 1 and executed by the terminal in FIG. 1.
  • the method may include the following steps.
  • step 201 if the inactivity timer in the terminal expires, obtain the direct communication sidelink status of the terminal.
  • step 202 when the sidelink state is the first state, the RRC connection between the terminal and the base station is released; the first state means that there is no sidelink destination identifier in the terminal, or the terminal sent to the terminal last time There is no sidelink destination identifier in the sidelinkUEInformation of the base station.
  • the method further includes:
  • the second state refers to the presence of the sidelink destination identifier in the terminal, or the presence of the sidelink destination identifier in the directly connected communication terminal information sidelinkUEInformation that the terminal sent to the base station last time.
  • the method before acquiring the direct communication sidelink status of the terminal, the method further includes:
  • the sidelink UEInformation used to indicate the deletion of the sidelink destination identifier in the terminal is sent to the base station; the sidelink UEInformation used to indicate the deletion of the sidelink destination identifier in the terminal does not have the sidelink destination identifier.
  • the sidelink timer is a timer that runs in the access layer of the terminal and is triggered to start or restart when the terminal sends a sidelink MAC layer protocol data unit PDU or a sidelink MAC layer SDU;
  • the sidelink destination identifier in the terminal is deleted through the access layer.
  • the method further includes:
  • the access layer starts or updates the sidelink timer according to the sidelink timer configuration information.
  • the obtaining sidelink timer configuration information includes:
  • the RRC signaling includes dedicated signaling and broadcast messages.
  • the sidelink timer is a timer that runs in a higher layer of the terminal, and the start or restart is triggered when the higher layer sends sidelink data;
  • the higher layer determines whether to delete the sidelink destination identifier in the terminal according to the service attributes of the sidelink service in the terminal;
  • the sidelink destination identifier in the terminal is deleted according to the deletion instruction.
  • the method before the higher layer detects whether the sidelink timer expires, the method further includes:
  • the high layer When the high layer sends sidelink data, the high layer starts or updates the sidelink timer according to the sidelink timer configuration information.
  • the inactivity timer in the terminal expires, obtain the terminal's direct communication sidelink state, and when the sidelink state is the first state, release the RRC connection between the terminal and the base station.
  • the first state refers to the terminal
  • the sidelink destination identifier does not exist in the terminal, or the sidelink destination identifier does not exist in the sidelinkUEInformation sent by the terminal to the base station last time.
  • the RRC connection release between the terminal and the base station is determined by judging the sidelink status, so that the RRC connection status can be stably maintained during the sidelink data transmission and reception process, avoiding repeated RRC connection establishment and release, and improving the efficiency of data transmission.
  • FIG. 3 shows a method flowchart of an RRC connection state control method provided by an embodiment of the present disclosure.
  • the RRC connection state control method can be applied to the implementation environment shown in FIG. Executed by the terminal, the method may include the following steps.
  • step 301 the terminal obtains sidelink timer configuration information.
  • the sidelink timer configuration information may include time value information of the sidelink timer.
  • the sidelink timer configuration information can be obtained by the access layer of the terminal, the access layer of the terminal can obtain the sidelink timer configuration information configured in the terminal through the protocol, and the access layer of the terminal can also receive the information passed by the base station.
  • RRC signaling includes dedicated signaling and broadcast messages.
  • the sidelink timer configuration information configured by the standard protocol can be stored in the terminal, and the terminal can directly configure the sidelink timer according to the time value information corresponding to the sidelink timer configuration information configured by the standard protocol.
  • the standard protocol stipulates that the sidelink timer configuration information has a duration of 1 minute, and the terminal directly follows the standard protocol to enable the terminal's access layer to obtain a sidelink timer configuration information with a duration of 1 minute.
  • the base station in the process of sidelink resource allocation, can send the sidelink timer configuration information to the access layer of the corresponding terminal that needs to configure the sidelink timer through a broadcast message or dedicated signaling.
  • the access layer of the terminal obtains sidelink timer configuration information.
  • the base station sends configuration information with a duration of 1 minute to the access layer of the corresponding terminal that needs to configure the sidelink timer through a broadcast message or dedicated signaling, and the access layer of the corresponding terminal obtains the sidelink timer configuration information.
  • the access layer of the terminal obtains the sidelink timer configuration information
  • the sidelink timer configuration information is sent to the upper layer of the terminal (such as the sidelink application layer) through the access layer of the terminal, and the sidelink timer is run in the upper layer of the terminal.
  • the sidelink timer may be a timer that runs in the upper layer of the terminal and is triggered to start or restart when the upper layer sends sidelink data. For example, when the high layer sends sidelink data, the high layer starts or updates the sidelink timer according to the sidelink timer configuration information.
  • the terminal's access layer After the terminal's access layer receives the sidelink timer configuration information, it directly runs the sidelink timer in the terminal's access layer according to the sidelink timer configuration information.
  • the sidelink timer may be a timer that runs in the access layer of the terminal and is triggered to start or restart when the terminal sends a sidelink MAC layer protocol data unit PDU or a sidelink MAC layer SDU.
  • the sidelink timer is started or updated through the access layer according to the sidelink timer configuration information.
  • the Protocol Data Unit (PDU) in the MAC is composed of character strings arranged in bytes.
  • a Service Data Unit (SDU) starts from the first bit and is assembled into a MAC PDU in ascending order of bits.
  • the sidelink timer in the terminal access layer can be started or restarted to start timing.
  • step 302 if the sidelink timer expires, delete the sidelink destination identifier in the terminal.
  • the sidelink timer can be divided into two cases according to the different running positions of the sidelink timer, and the sidelink destination identifier in the terminal is deleted.
  • the terminal's access layer detects whether the sidelink timer has expired, and if the sidelink timer expires, the terminal is deleted through the terminal's access layer The sidelink purpose identifier in.
  • the basis for judging the timeout is based on the sidelink timer configuration information. Within the timing duration of the sidelink timer, if the sidelink timer is not triggered to restart, it can be judged as a timeout.
  • the upper layer of the terminal detects whether the sidelink timer has expired. If the sidelink timer expires, the upper layer of the terminal passes the upper layer of the terminal according to the sidelink service in the terminal.
  • the service attribute determines whether to delete the sidelink destination identifier in the terminal.
  • the upper layer sends a deletion instruction to the access layer, and the access layer deletes the sidelink according to the deletion instruction.
  • the sidelink destination identifier in the terminal is determined to delete the sidelink destination identifier in the terminal.
  • the access layer of the terminal obtains the sidelink timer configuration information sent by the base station, or after obtaining the sidelink timer configuration information specified by the standard protocol stored in the terminal, the access layer sends the sidelink timer configuration information
  • the upper layer starts or restarts the sidelink timer according to the sidelink data sent.
  • the upper layer determines whether to delete the sidelink destination identifier in the terminal according to the service attributes of the sidelink service in the terminal.
  • the service attribute of the sidelink service in the terminal can be any attribute related to the sidelink service including the cycle of the sidelink service, the priority of the sidelink service, and the delay of the sidelink service.
  • the upper layer can determine whether to delete the sidelink destination identifier in the terminal by judging whether the period of the sidelink service is greater than the duration configured by the sidelink timer according to the period of the sidelink service in the terminal. For example, when the upper layer determines that the period of the sidelink service is greater than the duration configured by the sidelink timer, it determines not to delete the sidelink destination identifier in the terminal; when the upper layer determines that the period of the sidelink service is not greater than the duration configured by the sidelink timer, it determines Delete the sidelink destination identifier in the terminal.
  • the embodiment of this application only takes the service attribute of the sidelink service including the period of the sidelink service as an example for illustration.
  • the terminal can also determine whether to delete the sidelink destination identifier in the terminal through other types of service attributes.
  • the embodiment of this application is for determining whether to delete the terminal.
  • the type of business attribute used by the sidelink purpose identifier and the determination rule are not limited.
  • step 303 the access layer of the terminal sends to the base station sidelinkUEInformation for instructing to delete the sidelink destination identifier in the terminal.
  • the access layer of the terminal when confirming to delete the sidelink destination identifier in the terminal, sends to the base station sidelinkUEInformation for instructing to delete the sidelink destination identifier in the terminal.
  • step 304 if the inactivity timer in the terminal expires, the direct communication sidelink status of the terminal is acquired.
  • the direct communication sidelink state of the terminal includes a first state or a second state, where the first state is used to indicate that there is no sidelink destination identifier in the terminal, or that the terminal sent to The sidelink destination identifier does not exist in the sidelinkUEInformation of the base station; the second state is used to indicate that the sidelink destination identifier exists in the terminal, or the sidelink destination identifier is present in the directly connected communication terminal information sidelinkUEInformation that the terminal sends to the base station last time.
  • the inactivity timer is a timer that is triggered to start or restart by the MAC layer SDU sent between the terminal and the base station.
  • the MAC layer of the terminal receives the MAC SDU transmitted by the Dedicated Transmission Channel (DTCH), Dedicated Control Channel (DCCH), Common Control Channel (CCCH), or the MAC layer of the terminal
  • the inactivity timer is triggered to start or restart.
  • the terminal when the terminal detects that the inactivity timer expires, it determines whether the sidelink status of the terminal is the first state or not by detecting whether there is a sidelink destination identifier stored in the terminal or whether there is a sidelink destination identifier in the sidelink UEInformation sent to the base station in step 303.
  • the second state When there is no sidelink destination identifier, it is determined that the sidelink state of the terminal is the first state; when there is a sidelink destination identifier, it is determined that the sidelink state of the terminal is the second state.
  • Step 305 When the sidelink state is the first state, release the RRC connection between the terminal and the base station.
  • the RRC connection between the terminal and the base station is disconnected, so that the terminal leaves the connected state and remains in the idle state.
  • Step 306 When the sidelink state is the second state, maintain the RRC connection between the terminal and the base station.
  • the RRC connection between the terminal and the base station is maintained or established, so that the terminal is kept in the connected state.
  • FIG. 4 shows a schematic diagram of an RRC keeping connection involved in an embodiment of the present application.
  • the RRC keep-alive procedure can be as follows:
  • the duration of the inactivity timer configured by the base station for the terminal is 1 minute, and the duration of the sidelink timer configured by the base station for the terminal is 1 minute.
  • the base station sends the configuration information of the inactivity timer and the sidelink timer with a duration of 1 minute to the access layer of the terminal.
  • the access layer of the terminal sends the configuration information of the sidelink timer of 1 minute to the upper layer of the sidelink of the terminal.
  • the terminal sends a SidelinkUEinformation message to the base station through the access layer.
  • the SidelinkUEinformation message carries the sidelink purpose identifier and the three types of sidelink services.
  • the sidelink purpose identifiers are a, b, and c, respectively.
  • FIG. 5 shows a schematic diagram of RRC connection release related to an embodiment of the present application.
  • the RRC connection release process can be as follows:
  • the duration of the inactivity timer configured by the base station for the terminal is 1 minute
  • the duration of the sidelink timer configured by the base station for the terminal is 1 minute.
  • the base station sends the configuration information of the inactivity timer and the sidelink timer with a duration of 1 minute to the access layer of the terminal.
  • the access layer of the terminal sends the configuration information of the sidelink timer of 1 minute to the upper layer of the sidelink of the terminal.
  • S53 It is detected that there are three sidelink services in the terminal.
  • the periods of the three sidelink services are 10s, 20s, and 30s respectively.
  • the terminal sends a SidelinkUEinformation message to the base station through the access layer.
  • the SidelinkUEinformation message carries the sidelink purpose identifier and the three types of sidelink services.
  • the sidelink purpose identifiers are a, b, and c, respectively.
  • the access layer deletes all sidelink destination identifiers in the terminal according to the delete instruction sent by the higher layer, and sends SidelinkUEInformation to the base station to instruct to delete all sidelink destination identifiers.
  • the direct communication sidelink state of the terminal is acquired, where the sidelink state includes the first state or the second state, and the first state It means that there is no sidelink destination identifier in the terminal, or there is no sidelink destination identifier in the sidelink UEInformation that the terminal sent to the base station last time; the second state refers to the presence of the sidelink destination identifier in the terminal, or the terminal directly connected to the base station last time The sidelink destination identifier exists in the sidelinkUEInformation of the communication terminal information.
  • the sidelink state is the first state, the RRC connection between the terminal and the base station is released.
  • the RRC connection status can be stably maintained during the sidelink data transmission and reception process, avoiding repeated RRC connection establishment and release, and improving the efficiency of data transmission .
  • Fig. 6 is a block diagram of an RRC connection state control device provided by an embodiment of the present disclosure. As shown in Fig. 6, the RRC connection state control device can be implemented in the implementation environment shown in Fig. 1 through hardware or a combination of software and hardware. All or part of the terminal to perform the steps executed by the terminal in any one of the embodiments shown in FIG. 2 or FIG. 3.
  • the RRC connection state control device may include:
  • the status acquiring module 601 if the inactivity timer in the terminal expires, acquires the direct communication sidelink status of the terminal.
  • the connection release module 602 is configured to release the RRC connection between the terminal and the base station when the sidelink state is the first state; the first state means that there is no sidelink destination identifier in the terminal, or There is no sidelink destination identifier in the sidelinkUEInformation sent by the terminal to the base station last time.
  • the device further includes:
  • a connection maintaining module configured to maintain the RRC connection between the terminal and the base station when the sidelink state is the second state
  • the second state refers to the presence of a sidelink destination identifier in the terminal, or the presence of a sidelink destination identifier in the directly connected communication terminal information sidelinkUEInformation that the terminal sends to the base station last time.
  • the device further includes:
  • An identifier deletion module configured to delete the sidelink destination identifier in the terminal if the sidelink timer expires before acquiring the direct communication sidelink status of the terminal;
  • the message sending module is configured to send the sidelink UEInformation for instructing to delete the sidelink destination identifier in the terminal to the base station; the sidelink UEInformation for instructing to delete the sidelink destination identifier in the terminal does not have the sidelink destination identifier.
  • the identifier deletion module includes:
  • the first timeout detection submodule is used to trigger the start or restart when the sidelink timer is running in the access layer of the terminal and the terminal sends a sidelink MAC layer protocol data unit PDU or a sidelink MAC layer SDU The timer; through the access layer to detect whether the sidelink timer expires;
  • the first identifier deletion submodule is configured to delete the sidelink destination identifier in the terminal through the access layer if the sidelink timer expires.
  • the device further includes:
  • Configuration information obtaining module used to obtain sidelink timer configuration information
  • the timer starting module is used to start or update the sidelink timer according to the sidelink timer configuration information through the access layer when the terminal sends the sidelink MAC layer PDU or the sidelink MAC layer SDU.
  • the configuration information acquisition module is used to:
  • RRC signaling includes dedicated signaling and broadcast messages.
  • the identifier deletion module includes:
  • the second timeout detection sub-module is configured to detect the sidelink by the higher layer when the sidelink timer is running in the upper layer of the terminal, and when the higher layer sends the sidelink data, the start or restart timer is triggered. Whether the timer expires;
  • the deletion confirmation sub-module is configured to determine whether to delete the sidelink destination identifier in the terminal according to the service attribute of the sidelink service in the terminal through the high layer if the sidelink timer expires;
  • An instruction sending submodule which is used to send a deletion instruction to the access layer through the higher layer when it is determined to delete the sidelink destination identifier in the terminal;
  • the second identifier deletion submodule is configured to delete the sidelink destination identifier in the terminal according to the deletion instruction through the access layer.
  • the identifier deletion module includes:
  • the configuration information sending submodule is configured to send sidelink timer configuration information to the upper layer through the terminal's access layer;
  • the timer start submodule is used to start or update the sidelink timer by the higher layer according to the sidelink timer configuration information when the higher layer sends sidelink data.
  • the direct communication sidelink state of the terminal is acquired, where the sidelink state includes the first state or the second state, and the first state It means that there is no sidelink destination identifier in the terminal, or there is no sidelink destination identifier in the sidelink UEInformation that the terminal sent to the base station last time; the second state refers to the presence of the sidelink destination identifier in the terminal, or the terminal directly connected to the base station last time The sidelink destination identifier exists in the sidelinkUEInformation of the communication terminal information.
  • the sidelink state is the first state, the RRC connection between the terminal and the base station is released.
  • the RRC connection status can be stably maintained during the sidelink data transmission and reception process, avoiding repeated RRC connection establishment and release, and improving the efficiency of data transmission .
  • the device provided in the above embodiment realizes its functions, only the division of the above-mentioned functional modules is used as an example for illustration. In actual applications, the above-mentioned functions can be allocated by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • An exemplary embodiment of the present disclosure provides an RRC connection state control device that can implement all or part of the steps performed by a base station in the embodiment shown in FIG. 2 or FIG. 3 of the present disclosure.
  • the RRC connection state control device includes: processing A memory for storing executable instructions of the processor;
  • the processor is configured to:
  • the sidelink state is the first state
  • the RRC connection between the terminal and the base station is released;
  • the first state means that there is no sidelink destination identifier in the terminal, or the terminal sends to the terminal last time There is no sidelink destination identifier in the sidelinkUEInformation of the base station.
  • the method further includes:
  • the second state refers to the presence of a sidelink destination identifier in the terminal, or the presence of a sidelink destination identifier in the directly connected communication terminal information sidelinkUEInformation that the terminal sends to the base station last time.
  • the method before the obtaining the direct communication sidelink status of the terminal, the method further includes:
  • the sidelink UEInformation used to instruct to delete the sidelink destination identifier in the terminal is sent to the base station; the sidelink UEInformation used to instruct to delete the sidelink destination identifier in the terminal does not have a sidelink destination identifier.
  • the sidelink timer runs in the access layer of the terminal and is triggered when the terminal sends a sidelink MAC layer protocol data unit PDU or a sidelink MAC layer SDU.
  • deleting the sidelink destination identifier in the terminal includes:
  • the method further includes:
  • the access layer starts or updates the sidelink timer according to the sidelink timer configuration information.
  • the obtaining sidelink timer configuration information includes:
  • RRC signaling includes dedicated signaling and broadcast messages.
  • the sidelink timer is a timer that runs in a higher layer of the terminal and is triggered to start or restart when the higher layer sends sidelink data;
  • deleting the sidelink destination identifier in the terminal includes:
  • the higher layer determines whether to delete the sidelink destination identifier in the terminal according to the service attribute of the sidelink service in the terminal;
  • the sidelink destination identifier in the terminal is deleted according to the deletion instruction.
  • the method before the detecting by the higher layer whether the sidelink timer expires, the method further includes:
  • the high layer When the high layer sends sidelink data, the high layer starts or updates the sidelink timer according to the sidelink timer configuration information.
  • the direct communication sidelink state of the terminal is acquired, where the sidelink state includes the first state or the second state, and the first state It means that there is no sidelink destination identifier in the terminal, or there is no sidelink destination identifier in the sidelink UEInformation that the terminal sent to the base station last time; the second state refers to the presence of the sidelink destination identifier in the terminal, or the terminal directly connected to the base station last time The sidelink destination identifier exists in the sidelinkUEInformation of the communication terminal information.
  • the sidelink state is the first state, the RRC connection between the terminal and the base station is released.
  • the RRC connection status can be stably maintained during the sidelink data transmission and reception process, avoiding repeated RRC connection establishment and release, and improving the efficiency of data transmission .
  • the terminal includes hardware structures and/or software modules corresponding to each function.
  • the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. As shown in Figure 7:
  • the terminal 700 includes a communication unit 704 and a processor 702.
  • the processor 702 may also be a controller, which is represented as "controller/processor 702" in FIG. 7.
  • the communication unit 704 is used to support the terminal to communicate with other network devices (for example, base stations, etc.).
  • the terminal 700 may further include a memory 703, and the memory 703 is used to store program codes and data of the terminal 700.
  • FIG. 7 only shows a simplified design of the terminal 700.
  • the terminal 700 may include any number of processors, controllers, memories, communication units, etc., and all terminals that can implement the embodiments of the present disclosure are within the protection scope of the embodiments of the present disclosure.
  • the functions described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, or any combination thereof.
  • these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium.
  • the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another.
  • the storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.
  • the embodiment of the present disclosure also provides a computer storage medium, the readable storage medium contains executable instructions, and the executable instructions are invoked and executed by a processor in a terminal, so as to implement the above-mentioned various method embodiments executed by the terminal Data transmission method; or, the executable instruction is invoked and executed by the processor in the base station, so as to implement the RRC connection state control method executed by the terminal in the foregoing method embodiments.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un procédé et un dispositif de commande d'état de connexion RRC, et un support de stockage, se rapportant au domaine technique des communications sans fil, sont divulgués. Ledit procédé est exécuté par un terminal et comprend : si un temporisateur d'inactivité dans le terminal expire, l'acquisition d'un état de liaison latérale du terminal ; lorsque l'état de liaison latérale est un premier état, la libération d'une connexion RRC entre le terminal et une station de base, le premier état indiquant qu'il n'y a pas d'identifiant de destination de liaison latérale dans le terminal ou qu'il n'y a pas d'identifiant de destination de liaison latérale dans des informations d'UE de liaison latérale envoyées précédemment par le terminal à la station de base. Ainsi, l'état de connexion RRC est maintenu de manière stable dans le processus de transmission et de réception de données de liaison latérale, évitant les cas où la connexion RRC est établie de manière continue et répétée et libérée, et améliore l'efficacité de transmission de données.
PCT/CN2019/114643 2019-10-31 2019-10-31 Procédé et dispositif de commande d'état de connexion rrc, et support de stockage Ceased WO2021081875A1 (fr)

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CN201980002766.4A CN110945959B (zh) 2019-10-31 2019-10-31 Rrc连接状态控制方法、装置及存储介质

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KR102769122B1 (ko) 2020-01-21 2025-02-18 아서스테크 컴퓨터 인코포레이션 무선 통신 시스템에서 사이드링크 불연속 수신과 관련된 논리적 채널 우선 순위를 처리하기 위한 방법 및 장치
CN121000347A (zh) * 2020-05-11 2025-11-21 联想（新加坡）私人有限公司 用于传输指示无侧行链路数据的侧行链路控制信息的方法和设备
CN115669203B (zh) * 2020-05-18 2024-10-01 日本电气株式会社 用于通信的方法、设备和计算机可读介质
CN113873580B (zh) * 2020-06-30 2024-11-22 华为技术有限公司 通信的方法和装置
CN114071795B (zh) * 2020-07-31 2024-08-02 大唐移动通信设备有限公司 一种单播连接控制方法及装置

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