WO2018094884A1 - Procédé de contrôle de communication, unité de commande sans fil, terminal d'utilisateur, et contrôleur de réseau central - Google Patents

Procédé de contrôle de communication, unité de commande sans fil, terminal d'utilisateur, et contrôleur de réseau central Download PDF

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Publication number
WO2018094884A1
WO2018094884A1 PCT/CN2017/074548 CN2017074548W WO2018094884A1 WO 2018094884 A1 WO2018094884 A1 WO 2018094884A1 CN 2017074548 W CN2017074548 W CN 2017074548W WO 2018094884 A1 WO2018094884 A1 WO 2018094884A1
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WIPO (PCT)
Prior art keywords
user terminal
state
protocol layer
layer state
indication information
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PCT/CN2017/074548
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English (en)
Chinese (zh)
Inventor
庄宏成
王键
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华为技术有限公司
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Priority to CN201780066395.7A priority Critical patent/CN109892004B/zh
Publication of WO2018094884A1 publication Critical patent/WO2018094884A1/fr

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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
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/25—Maintenance of established connections

Definitions

  • the present application relates to the field of communications, and in particular, to a communication control method, a wireless control unit, a user terminal, and a core network controller.
  • the next-generation wireless network needs to support a variety of scenarios and services, and different scenarios and services have different requirements. For example, some services require higher data rates, some services require higher data rates, and some services require a large number of connections. Low latency and high reliability may be required, but both require a good user experience, such as permanent online.
  • the permanent online service can ensure that the service availability of the user equipment (User Equipment, UE) is as low as possible, or even “zero waiting”.
  • RRC idle state RRC idle state
  • RRC connected state RRC connected state
  • the existing permanent online technology can improve the user experience.
  • the UE is in the RRC connection state as much as possible, but the UE consumes a large amount of energy and wastes resources.
  • the present application provides a communication control method, a wireless control unit, a user terminal, and a core network controller, and aims to solve the technical problem that the UE permanently consumes a large amount of energy and wastes resources.
  • a first aspect of the present application provides a communication control method, applicable to an RCU, including the steps of: determining a second protocol layer state when a user terminal leaves a first protocol layer state, and transmitting a first indication of a second protocol layer state The information is sent to the user terminal, so that the user terminal performs corresponding operations based on the first indication information when in the second protocol layer state.
  • the present invention introduces a new protocol layer state in the user terminal, and indicates that the user terminal is new. The corresponding operation is performed in the protocol layer state, and the connection state can be restored in real time to achieve a permanent online experience.
  • a fourth aspect of the present application provides a communication control unit, which may include the following structures: a memory and a processor for storing data generated by an application and an application running, and the processor implements the function by executing the application. Determining a second protocol layer state when the user terminal leaves the first protocol layer state; sending the first indication information of the second protocol layer state to the user terminal, to indicate that the user terminal is in the second protocol The layer state is performed based on the first indication information. It can be seen that, in order to avoid the signaling overhead caused by the user terminal directly entering the RRC idle state and the delay of re-accessing the connection state of the user terminal, the present invention introduces a new protocol layer state in the user terminal, and indicates that the user terminal is new. The corresponding operation is performed in the protocol layer state, and the connection state can be restored in real time to achieve a permanent online experience.
  • a fifth aspect of the present application provides a user terminal, which may include the following structure: a memory and a processor that store an application and an application to generate data generated by the processor, and the processor implements the function to implement the function: receiving the RCU Sending first indication information, where the first indication information is generated by the RCU when determining a second protocol layer state when the user terminal leaves a first protocol layer state; entering the second protocol layer state; In the second protocol layer state, a corresponding operation is performed based on the first indication information.
  • a sixth aspect of the present application provides a core network controller, which may include the following structures: a memory and a processor for storing data generated by an application and an application, and the processor is configured to execute the application, To implement a function: receiving second indication information sent by the RCU, where the second indication information is generated by the RCU when determining a second protocol layer state when the user terminal leaves a first protocol layer state, the second protocol The layer state is an online idle state; and a corresponding operation is performed based on the second indication information.
  • the first indication information includes: a user
  • the terminal is configured to send configuration information of the uplink beacon, and the context information indicating that the user terminal retains the state of the first protocol layer. Therefore, the user terminal does not notify the core network controller when in the online active state, but the user terminal sends the uplink beacon to the RCU based on the first indication information and retains the context of the first protocol layer state, so that when the data is sent and received
  • the data link established by sending the uplink beacon and the context information of the reserved first protocol layer state can be restored to the RRC connected state in real time, and the data transmission is performed, which not only improves the permanent online experience of the user terminal, but also maintains the RRC operation. Consistency.
  • the configuration parameter includes: a sending manner in which the user terminal sends an uplink beacon and a resource used to send an uplink beacon. Therefore, the user terminal does not notify the core network when in the second protocol layer state, but the user terminal sends an uplink beacon to the RCU based on the first indication information and retains the context of the first protocol layer state, so that when the data is transmitted and received
  • the data link established by sending the uplink beacon and the context of the reserved first protocol layer state can be restored to the RRC connected state in real time to perform data transmission, which not only improves the permanent online experience of the user terminal, but also maintains the RRC operation. consistency.
  • the core network controller is notified, and the user terminal and the core network controller perform corresponding operations based on the received indication information, so that when the data is sent and received, the recovery identifier and the first protocol can be utilized.
  • the context of the layer state quickly enters the RRC connection state and performs data transmission, which not only improves the permanent online experience of the user terminal, but also maintains the consistency of the RRC operation.
  • the RCU may obtain a terminal type and a service requirement parameter when the user terminal leaves the first protocol layer state, and then The second protocol layer state when the user terminal leaves the first protocol layer state is determined based on the terminal type and the service requirement parameter.
  • the user equipment when the user terminal is in an online active state, the user equipment sends an uplink beacon to the RCU to update the data link, and keeps the uplink beacon based on the sending manner of the uplink beacon and the resource for sending the uplink beacon.
  • the L3 context of the first protocol layer state is used to enter a connection state; and the uplink data is sent. It can be seen that when the user terminal is in the online idle state and performs data transmission, the context of the first protocol layer state can be restored to the RRC connection state in real time, and the uplink data is sent, which not only improves the permanent online experience of the user terminal, but also maintains the RRC. Consistency of operation.
  • An eighth aspect of the present application provides a method for a user terminal to be permanently online, which may include the following steps: the user terminal receives a second protocol layer status indication message sent by the network and leaves the first protocol layer connection state, and then the user terminal sends and receives data.
  • the second protocol layer state is entered according to the second protocol layer status indication message.
  • the second protocol layer status of the user terminal includes: (permanent online) active state and (permanent online) idle state.
  • the user terminal sends the UL Beacon signal according to the preset uplink resource in the second protocol layer status indication message, if the second protocol of the user terminal When the layer status is permanently online, when there is uplink data, the data is sent according to the preset uplink resource or the scheduling request SR.
  • FIG. 3 is a schematic diagram of switching between states after a user terminal introduces a new RRC state in the prior art
  • FIG. 5 is a schematic diagram of signaling flow of a UE entering an AOA state from an RRC connected state and then restoring an RRC connected state in the present application;
  • FIG. 6 is a schematic diagram of another signaling process of the UE entering the AOA state from the RRC connected state and then restoring the RRC connected state in the present application;
  • FIG. 10 is a schematic structural diagram of a UE in the present application.
  • the UE in the RRC idle state will camp on one cell, and due to the mobility of the UE, cell reselection is performed to change the camped cell;
  • the UE in the RRC idle state will receive a possible paging message at its own paging occasion.
  • the S-GW Serving GateWay, Serving Gateway
  • the MME Mobility Management Entity, network node
  • the MME triggers a paging message to the eNB
  • the paging message carries the UE's UE Identity Index value, Paging DRX, and UE Paging Identity, the former two are used to determine the paging occasion of the UE, and the latter
  • the eNB sends a paging message (carrying the UE Paging Identity) on the air interface at the paging occasion of the UE, and after receiving the paging message, the UE initiates a new RRC connection establishment process on the currently camped cell.
  • initiate a new RRC connection establishment process on the currently camped cell.
  • Figure 2 shows a schematic diagram of the network architecture in which the control plane and the data plane are separated in the wireless network:
  • the function of the control plane of the wireless network in particular the RRC, is implemented in the radio control unit RCU, and the function of the data plane is implemented in the radio distribution unit RDU.
  • Each RDU can carry multiple TRPs (transmission and reception points). Therefore, the delay of the UE increases from the RRC idle state to the RRC connected state. Therefore, it is necessary to study the control plane and the data plane.
  • the UE and the base station reserve the context of the UE;
  • the core network controller when the UE enters or leaves the RRC connected inactive state, the core network controller is not notified, that is, the UE is in the RRC connected inactive state to the core network controller. Transparent, the core network controller does not know whether the UE is in the RRC connected state or the RRCconnected inactive state;
  • the present application redefines the state of the user terminal and proposes two new states, namely, introducing a permanent online AOA (Always-on active) at the user terminal.
  • the online active state can enter the RRC connection state in real time, reduce the delay, improve the performance of the access delay, and reduce the signaling overhead of the RRC signaling and the S1-application protocol (S1 application protocol);
  • the AOI (Always-on idle state) state of the OLI can be quickly entered in the user terminal, and the RRC connection state can be quickly entered, and the energy consumption is reduced.
  • a fast state transition can be performed based on the context of the control plane and the context of the data plane, which can improve the access performance of the user terminal and achieve a permanent online experience.
  • the UE is defined in the first protocol layer state, such as the RRC connected state or the RRC idle state, before the state change, and the UE is defined to be in the second protocol layer state, such as the AOA state or the AOI state, after the state change.
  • the purpose of the present application is to implement the state change process of the UE between the RRC connected state or the RRC idle state and the AOA state or the AOA state.
  • the RCU monitors the data transmission and reception parameters of the user terminal in real time, generates a state change command based on the data transmission and reception parameters, and transmits the state change command to the user terminal to trigger the user terminal to leave the first protocol layer state. For example, the RCU monitors whether the user terminal in the RRC connected state does not send and receive data within a certain period of time, such as the RRC inactivation timer timeout, and if so, the RCU triggers the UE to leave the RRC connected state; or, the RCU monitors whether the user terminal in the AOA state is in the AOA state. The data is sent in a certain period of time, and no downlink data is received. If the AOA inactivation time expires in the AOA state, the RCU triggers the user terminal to leave the AOA state.
  • a certain period of time such as the RRC inactivation timer timeout
  • the RCU can also monitor whether the user terminal in the RRC idle state needs to send uplink data or receive downlink data. If yes, the RCU triggers the UE to leave the RRC idle state; or the RCU can also monitor whether the user terminal in the AOI state needs to send the uplink. The data either receives downlink data, and if so, the RCU triggers the UE to leave the AOI state.
  • the state change command generated by the RCU can also be used to indicate the state of the second protocol layer that the user terminal enters, for example, whether the user terminal enters the AOA state or the AOI state.
  • the second protocol layer state when the user terminal leaves the first protocol layer state may be determined by acquiring the terminal type and the service requirement parameter when the user terminal leaves the first protocol layer state. For example, the RCU judges whether the user terminal is a relay (relay) terminal, the relay requirement exists, the service access delay requirement of the user terminal and the preset threshold, and whether the user terminal is a high frequency access. Further, it is determined whether the second protocol layer state of the user terminal is an AOA state or an AOI state.
  • the RCU After determining the second protocol layer state when the user terminal leaves the first protocol layer state, the RCU sends the first indication information of the second protocol layer state to the user terminal, where the first indication information is used to indicate that the user terminal is in the second protocol. The corresponding operation is performed when the layer is in the state.
  • the RCU determines the configuration parameter used by the user terminal to send the uplink beacon, that is, the UL Beacon, or the RCU notifies the RDU or the TRP, and then the RDU or the TRP determines the configuration parameter used by the user terminal to send the UL Beacon, where the configuration parameters include The UL Beacon transmission mode and the resource for transmitting the UL Beacon, and the RCU generates information indicating that the user terminal retains the context when it is in the first protocol layer state, including Layer 3 (Layer 3, L3) context and Layer 2 (Layer 2 L2) Context, finally, the RCU sends the configuration parameters of the UL Beacon and the information indicating that the user terminal retains the L3 context and the L2 context as the first indication information to the user terminal.
  • the configuration parameters include The UL Beacon transmission mode and the resource for transmitting the UL Beacon
  • the RCU generates information indicating that the user terminal retains the context when it is in the first protocol layer state, including Layer 3 (Layer
  • the first indication information includes: a configuration parameter used by the user terminal to send the UL Beacon, and an L3 context and L2 indicating that the user terminal retains the state in the first protocol layer. Contextual information.
  • the user terminal entering the AOA state sends a UL Beacon to the RCU based on the first indication information to update the data link, including creating a new data link or reestablishing the data link, and retaining the first protocol. L3 context and L2 context at layer state.
  • the user terminal transmits the uplink data or the SR (Scheduling Request) to the RCU by using the resource used by the user terminal to transmit the UL Beacon, and the uplink grant authorization, that is, the UL grant, is allocated by the RCU.
  • the uplink grant authorization that is, the UL grant
  • the terminal After receiving the UL grant returned by the RCU, the terminal enters an RRC connected state based on the UL grant, and then establishes a data connection with the core network controller, and uses the data connection to send uplink data; and when the user terminal has downlink data to receive,
  • the data link and the reserved L3 context based on the UL Beacon update may be used to enter the RRC connection state, thereby establishing a data connection with the core network controller and receiving downlink data.
  • the uplink beacon UL Beacon is stopped.
  • the first indication information includes: a recovery identifier used by the user terminal to restore the state of the first protocol layer, such as a Resume ID, and an L3 indicating that the user terminal retains the state in the first protocol layer state. Contextual information.
  • the RCU sends a second indication information to the core network controller, where the second indication information includes: information that informs the core network controller user terminal to enter the second protocol layer state, and instructs the core network controller to reserve the user terminal. Information about the L3 context when in the first protocol layer state. Thereafter, after receiving the first indication information, the user terminal entering the AOI state retains its L3 context in the first protocol layer state based on the first indication information.
  • the user terminal when the user terminal needs to send the uplink data, the user enters the RRC connection state by using the L3 context, thereby establishing a data connection with the core network, and transmitting the uplink data; the user terminal needs to receive the downlink data, and uses the UL in the paging information. Grant, corresponding to the paging information, enters the RRC connected state, Thereby establishing a data connection with the core network and receiving downlink data.
  • the present application introduces two new states at the UE end, including: an AOA state and an AOI state, where operations of the two states respectively correspond to operations of the RRC connected state and the RRC idle state of the UE, whereby the UE is still at the CN controller end.
  • the original RRC connected state and the RRC idle state are also included in the UE end.
  • the RCU When the UE enters the AOI state, the RCU notifies the UE to reserve the L3 context of the UE and the recovery identifier Resume ID for restoring the RRC connected state, and notifies the CN controller that the UE is in the RRC idle state and reserves the L3 context.
  • the AOI state corresponds to the RRC idle state.
  • the UE and the CN For the downlink data, the UE and the CN perform communication operations according to the rule that the UE is in the RRC idle state, for example, the UE listens to the paging signal of the CN or the RCU; for the uplink data, the UE uses the Resume ID to quickly recover the RRC.
  • the communication operation In the connected state, the communication operation is performed with the CN according to the rule that the UE is in the RRC connected state.
  • the UE sends an uplink Beacon signal (UL Beacon) to the RCU on the network side, and the RCU on the network side updates the data link with the UE accordingly to avoid handover. Since the UL Beacon signal has an impact on the power consumption of the UE, in the AOA state, if the UE does not receive data for a long time and does not receive downlink data, the UE notifies the RCU that the RCU responds and notifies the UE of the resume ID, and notifies the CN. The controller enters the AOI state and stops transmitting the UL Beacon.
  • UL Beacon uplink Beacon signal
  • the UE When the UE leaves the RRC-connected state, it determines whether the UE enters the AOA state or the AOI state according to the capabilities of the UE and the service demand.
  • the network element involved in this embodiment includes: a controller such as an RCU and an RDU, a base station such as a TRP, and a user terminal UE.
  • FIG. 5 is a schematic diagram of a signaling flow of a UE entering an AOA state from an RRC connected state and then restoring an RRC connected state:
  • the RCU triggers the UE to leave the RRC connected state. If the UE enters the AOA state, the following steps are performed:
  • Step 1 The RCU determines that the UE enters the AOA state and commands the UE to enter the AOA state, and notifies the UE to use
  • the configuration parameters of the UL Beacon are sent and the L3 context and L2 context are reserved, ie the control plane context and the data plane context.
  • the RCU can determine the configuration parameters used by the UE to send the UL Beacon, including the sending manner of the UL Beacon sent by the UE and the resource used by the UE to send the UL Beacon, such as the sending manner of the UL Beacon periodically sent by the UE; or, the RCU only informs The RDU or the TRP of the service determines the manner in which the UE sends the UL Beacon and the resource used to transmit the UL Beacon by the RDU or the TRP. After that, the RCU sends the UL Beacon to the UE determined by the RDU or the TRP and the method for transmitting the UL Beacon. The resource and the information indicating that the UE retains the context of the L3 context and L2 are notified to the UE.
  • Step 2 After receiving the indication of entering the AOA state, the UE is configured to send the configuration parameters of the UL Beacon and the indications of the L3 and L2 contexts, and then enter the AOA state, and according to the received resources of the UL Beacon, to the network side.
  • the base station sends a UL Beacon such as TRP1 or TRP2;
  • Step 3 When the UE moves, and the TRP of the service changes, for example, when the TRP1 is changed to the TRP2, the new TRP, that is, the TRP2, notifies the UE to send a new configuration parameter of the UL Beacon. At this time, the UE sends the UL Beacon to the TRP2.
  • Step 5 When the UE has downlink data, the L3 context reserved by the UE between the UE and the CN controller, and the data link updated based on the UL beacon (reestablishing the disconnected existing data link or the newly established data link) Data transfer.
  • the UE stops transmitting the UL beacon.
  • the AOA state introduced in the first embodiment regardless of whether it is a new RRC state, but the UE performs a data transmission operation according to the operation of the RRC connected state, maintaining the consistency of the RRC operation of the UE and the CN, and real-time Perform service data transmission and avoid TRP handover signaling, reducing signaling overhead.
  • FIG. 6 is a schematic diagram of another signaling flow of a UE entering an AOA state from an RRC connected state and then restoring an RRC connected state:
  • the RCU triggers the UE to leave the RRC connected state. If the UE is determined to enter the AOA state, the following steps are performed:
  • Step 1 The RCU determines that the UE enters the AOA state and commands the UE to enter the AOA state, and notifies the UE to send the UL Beacon resource and reserve the L3 context and the L2 context.
  • the RCU can determine the configuration parameters used by the UE to send the UL Beacon, including the sending manner of the UL Beacon sent by the UE and the resource used by the UE to send the UL Beacon, such as the sending manner of the UL Beacon sent by the UE periodically; or, the RCU only notifies the service.
  • RDU or TRP the RDU or TRP determines the manner in which the UE sends the UL Beacon and the resource used to transmit the UL Beacon, after which the RCU or RRP will be used by the RCU.
  • the determined manner in which the UE transmits the UL Beacon and the resource used to transmit the UL Beacon and the information indicating that the UE retains the L3 context and the context of L2 are notified to the UE.
  • Step 2 After receiving the indication of entering the AOA state, the UE enters the AOA state, and sends a UL Beacon to the base station on the network side according to the configuration parameters of the UL Beacon.
  • Step 4 The RCU updates the L2 context of the UE
  • Step 6 when the UE has downlink data, the UE and the CN controller perform according to the L3 context reserved by the UE, and the data link (reestablished disconnected existing data link or newly created data link) based on the UL beacon update. data transmission.
  • the UE maintains the context of the data plane, that is, the L2 context in the text, in the AOA state, and avoids the instruction overhead caused by the TRP switching instruction and the RDU switching instruction;
  • the service request is sent by using the resource that sends the UL Beacon, and when the service has the downlink data transmission as described above, the RRC connection state is entered in real time, which improves the permanent online experience of the user terminal.
  • both the UE and the CN operate according to the RRC connected state, and the consistency of the RRC operation is maintained.
  • FIG. 7 is a schematic diagram of a signaling flow of a UE entering an AOI state from an RRC connected state to an RRC connected state:
  • the RCU triggers the UE to leave the RRC connected state. If the UE determines that the UE should enter the AOI state, the specific steps are as follows:
  • Step 2 The RCU determines whether it needs to page the UE by itself. If the RCU itself pages the UE, it sends a paging message to the UE, that is, paging, and instructs the CN controller to advertise prohibit, that is, prohibit paging;
  • Step 3 When the UE has downlink data, the CN controller does not page the UE if it receives the paging prohibit indication of the UE, and directly uses the reserved L3 context for data transmission; if the CN controller does not receive the paging prohibit indication, the CN controls The device itself pages the UE, similar to the operation of the RRC idle state;
  • Step 4 The RCU is based on paging of the CN controller or paging the UE by itself, and carries the UL grant resource;
  • Step 5 The UE uses the UL grant resource to respond to the paging, that is, the paging response, thereby receiving the downlink number. According to (through existing data links or new data links).
  • the UE is in the AOA state. If the UE does not receive data for a long time and does not receive downlink data, for example, if the AOA inactivation time expires in the AOA state, the UE notifies the RCU that the UE directly enters the AOI state and stops transmitting the UL Beacon; or, the UE When converting from the AOA state to the AOI state, it can also be triggered by the RCU, as shown in FIG.
  • the UE after the UE enters the AOI state, the UE is prevented from transmitting the UL Beacon, thereby saving energy consumption of the UE.
  • the RCU When the UE leaves the RRC connected state, the RCU needs to determine whether the UE enters the AOA state or the AOI state. Specifically, in this embodiment, the UE determines the type, capability, and service status of the user terminal, as shown in FIG. 9 :
  • the service access delay requirement of the UE such as the maximum allowed delay of the service access
  • a preset threshold 1 if yes, the UE is determined to enter the AOA state; or if the UE is allowed to access the service at the maximum If the delay is lower than the preset threshold 2, and the UE is in the high frequency access, it is determined that the UE enters the AOA state;
  • the UE enters the AOI state.
  • the structure of the UE in FIG. 2 may be as shown in FIG. 10, and the user terminal may include the following structure:
  • a memory 1001 configured to store data generated by an application and an application running
  • the processor 1002 is configured to execute the application, to implement a function: receiving first indication information sent by the RCU, where the first indication information is determined by the RCU when determining that the user terminal leaves the first protocol layer state When the second protocol layer state is generated; entering the second protocol layer state; and when in the second protocol layer state, performing a corresponding operation based on the first indication information.
  • the CN controller of the CN in FIG. 2 can implement the corresponding functions in the above FIG. 5 to FIG. 9, specifically for: Receiving, by the RCU, the second indication information that is sent by the RCU, where the second indication information is generated by the RCU when determining that the user terminal leaves the first protocol layer state, where the second protocol layer state is online. An idle state; performing a corresponding operation based on the second indication information.

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Abstract

L'invention concerne un procédé de contrôle de communication, une unité de commande sans fil, un terminal d'utilisateur, et un contrôleur de réseau central, le procédé de commande de communication étant appliqué à une RCU. Le procédé consiste à : déterminer un second état de couche de protocole lorsqu'un terminal d'utilisateur sort d'un premier état de couche de protocole ; et envoyer des premières informations d'indication concernant le second état de couche de protocole au terminal d'utilisateur, les premières informations d'indication étant utilisées pour commander au terminal d'utilisateur d'exécuter des opérations correspondantes lorsqu'il se trouve dans le second état de couche de protocole, de sorte que le terminal d'utilisateur exécute des opérations correspondantes sur la base des premières informations d'indication lorsqu'il se trouve dans le second état de couche de protocole. Par conséquent, afin d'éviter le surdébit de signalisation provoqué par l'entrée directe d'un terminal d'utilisateur dans un état de veille RRC, et réduire le retard du terminal d'utilisateur lorsqu'il ré-accède à un état connecté, la présente invention introduit un nouvel état de couche de protocole au terminal d'utilisateur et commande au terminal d'utilisateur d'exécuter des opérations correspondantes dans le nouvel état de couche de protocole, ce qui permet de revenir à un état connecté en temps réel et de rester en permanence en ligne.
PCT/CN2017/074548 2016-11-25 2017-02-23 Procédé de contrôle de communication, unité de commande sans fil, terminal d'utilisateur, et contrôleur de réseau central WO2018094884A1 (fr)

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