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WO2022141332A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2022141332A1
WO2022141332A1 PCT/CN2020/141895 CN2020141895W WO2022141332A1 WO 2022141332 A1 WO2022141332 A1 WO 2022141332A1 CN 2020141895 W CN2020141895 W CN 2020141895W WO 2022141332 A1 WO2022141332 A1 WO 2022141332A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
resource
uplink data
message
network device
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2020/141895
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English (en)
Chinese (zh)
Inventor
酉春华
徐小英
郭英昊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies 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.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2020/141895 priority Critical patent/WO2022141332A1/fr
Publication of WO2022141332A1 publication Critical patent/WO2022141332A1/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
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a communication method and apparatus.
  • the access network device can configure one or more configuration grants (CG) for the terminal device in the radio resource control (RRC) connection state.
  • CG configuration grants
  • RRC radio resource control
  • the terminal device can send uplink information on the CG resource configured by the access network device.
  • the present application provides a communication method and apparatus for implementing CG transmission in an RRC inactive state.
  • an embodiment of the present application provides a communication method, and the method can be executed by a terminal device or by a component (for example, a chip or a circuit) configured in the terminal device.
  • the method includes: the terminal device receives first indication information from the network device, where the first indication information is used to indicate that the CG resource is a shared resource or a dedicated resource, or the first indication information is used to indicate whether the CG resource allows the RRC message and uplink
  • the data is multiplexed, and the CG resource is used for the terminal equipment to perform uplink transmission in the RRC inactive state; if the CG resource is a shared resource, or if the CG resource allows the multiplexing of RRC messages and uplink data, the terminal equipment sends the CG resource to the uplink data.
  • the network device sends a first message and first uplink data, where the first message is used to request to resume the RRC connection suspended by the terminal device.
  • the network device sends the first indication information to the terminal device, indicating whether the CG resource is a shared resource, or whether the CG resource allows the RRC message to be multiplexed with the uplink data, so that the terminal device can be informed that the RRC is in the inactive state.
  • the next step is to send the first message and the first uplink data, or to send only the first uplink data (without the first message), so as to realize the CG transmission of the terminal device in the RRC inactive state.
  • the terminal device may send the first message and the first uplink data to the network device on the CG resource, so that the network device can send the first message and the first uplink data to the network device according to the first message. Identify the identity of the terminal device, parse and process the first uplink data sent by the terminal device, and decide whether to resume the RRC connection suspended by the terminal device.
  • the first message and the first uplink data are carried in different MAC SDUs.
  • the first message includes one or more of the following information: I-RNTI, short MAC-I, and RRC connection recovery reason.
  • the I-RNTI in the first message can be used by the network device to obtain the context of the terminal device
  • the short MAC-I can be used by the network device to verify the identity of the terminal device
  • the RRC connection recovery reason can be used by the network device to determine whether to restore the terminal.
  • Device pending RRC connection the network device can check whether the terminal device is a legitimate terminal device according to the short MAC-I in the first message, obtain the context of the terminal device according to the I-RNTI in the first message, and Determine whether to resume the RRC connection suspended by the terminal device according to the reason for the restoration of the RRC connection.
  • the method further includes: if the CG resource is a dedicated resource, or if the CG resource does not allow multiplexing of the RRC message with the uplink data, the terminal device sends the first uplink data to the network device on the CG resource.
  • the terminal device when the CG resource is a dedicated resource, and the CG resource does not allow multiplexing of RRC messages with uplink data, the terminal device does not send the first message on the CG resource, and all the CG resources can be used to send the terminal device.
  • the uplink data can effectively improve resource utilization.
  • the method further includes: the terminal device sends the first RLC configuration to the network device, where the first uplink data is obtained by the terminal device after processing according to the first RLC configuration.
  • the terminal device uses the first RLC configuration to process the second uplink data to obtain the first uplink data.
  • both the first uplink data and the second uplink data refer to the data to be sent by the terminal device
  • the second uplink data refers to the data (for example, RLC SDU) before processing by the RLC layer
  • the first uplink data refers to the data processed by the RLC layer.
  • data (such as RLC PDUs).
  • the above-mentioned first RLC configuration may include at least one of RLC AM configuration, RLC UM configuration, and RLC TM configuration.
  • the terminal device sends the first RLC configuration to the network device, so that the DU of the network device can be informed of the configuration adopted by the terminal device.
  • the first RLC configuration is used to timely and accurately parse and process the received first uplink data.
  • the method further includes: the terminal device determines to transmit the first uplink data in the RRC inactive state according to the expected transmission times or DRB information corresponding to the first uplink data; or, the terminal device transmits the first uplink data on the CG resource. Send the expected number of transfers to the network device.
  • the terminal device can decide which RRC connection recovery process to initiate according to the expected number of transmissions or the DRB information corresponding to the first uplink data.
  • the terminal device can transmit the first uplink data in the RRC inactive state.
  • the terminal device may send the expected number of transmissions to the network device, so that the network device decides whether to resume the RRC connection suspended by the terminal device according to the expected number of transmissions.
  • the method further includes: the terminal device receives second indication information from the network device, where the second indication information is used to indicate the first search space type; and the terminal device receives information from the first search space type according to the first search space type.
  • the network device can indicate to the terminal device the manner of receiving the response message. Specifically, if the second indication information indicates the first search space type, the terminal device may detect the response message from the network device in the search space corresponding to the first search space type.
  • the response message if the response message is sent by multicast, the response message includes the HARQ feedback of the network device for the first uplink data; if the response message is sent by unicast, the response message is used to notify the terminal device to keep In the RRC inactive state.
  • an embodiment of the present application provides a communication method, and the method can be executed by a network device or by a component (for example, a chip or a circuit) configured in the network device.
  • the method includes: the network device sends first indication information to the terminal device, where the first indication information is used to indicate that the CG resource is a shared resource or a dedicated resource, or the first indication information is used to indicate whether the CG resource allows RRC messages and uplink data
  • the CG resource is used for the terminal equipment to perform uplink transmission in the RRC inactive state; if the CG resource is a shared resource, or if the CG resource allows RRC messages to be multiplexed with uplink data, the network device receives data from the CG resource on the CG resource.
  • the first message and the first uplink data of the terminal device where the first message is used to request to resume the RRC connection suspended by the terminal device.
  • the first message and the first uplink data are carried in different MAC SDUs.
  • the first message includes one or more of the following information: I-RNTI, short MAC-I, and RRC connection recovery reason.
  • the method further includes: if the CG resource is a dedicated resource, or if the CG resource does not allow multiplexing of the RRC message with the uplink data, the network device receives the first uplink data from the terminal device on the CG resource .
  • the network device includes a CU and a DU; the network device receiving the first uplink data from the terminal device includes: the DU receiving the first uplink data from the terminal device; the method further includes: the DU sends the first uplink data to the CU A request message, the first request message is used to request the first RLC configuration used by the terminal device; the CU sends a first response message to the DU, the first response message is used to indicate the first RLC configuration used by the terminal device; An RLC configuration processes the first uplink data, obtains the second uplink data, and sends the second uplink data to the CU.
  • the first RLC configuration includes at least one of RLC AM configuration, RLC UM configuration, and RLC TM configuration.
  • the DU of the network device may request the CU for the first RLC configuration used by the terminal device, and then use the first RLC. Configure to parse and process the received first uplink data in a timely and accurate manner.
  • the method further includes: the network device receives the expected number of transmissions from the terminal device on the CG resource; the network device determines whether to resume the RRC connection suspended by the terminal device according to the expected number of transmissions.
  • the method further includes: the network device sends second indication information to the terminal device, where the second indication information indicates a first search space type, and the first search space type is used by the terminal device to receive information from the network device.
  • a response message the network device sends a response message to the terminal device, where the response message includes the network device's feedback on the first message or the first uplink data.
  • the method further includes: the network device sends a response message through multicast, where the response message includes the HARQ feedback of the first uplink data by the network device; or, the network device sends the response message through unicast , the response message is used to notify the terminal equipment to remain in the RRC inactive state.
  • an embodiment of the present application provides a communication device, the communication device has the functions of implementing the terminal equipment in the above aspects, and the communication device may be a terminal device or a chip included in the terminal device.
  • the communication device may also have the function of implementing the network device in the above aspects, and the communication device may be a network device or a chip included in the network device.
  • the functions of the above communication apparatus may be implemented by hardware, or by executing corresponding software in hardware, and the hardware or software includes one or more modules or units or means corresponding to the above functions.
  • the structure of the communication apparatus includes a processing module and a transceiver module, wherein the processing module is configured to support the apparatus to perform the corresponding functions of the terminal equipment in the above aspects, or perform the network equipment in the above aspects. corresponding function.
  • the transceiver module is used to support the communication between the communication device and other communication devices. For example, when the communication device is a terminal device, it can receive the first indication information from the network device.
  • the communication device may further include a storage module, which is coupled with the processing module and stores necessary program instructions and data of the communication device.
  • the processing module may be a processor
  • the communication module may be a transceiver
  • the storage module may be a memory
  • the memory may be integrated with the processor, or may be provided separately from the processor.
  • the structure of the communication device includes a processor, and may also include a memory.
  • the processor is coupled to the memory and operable to execute computer program instructions stored in the memory to cause the communication apparatus to perform the methods of the above-described aspects.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface can be a transceiver or an input/output interface; when the communication device is a chip included in the terminal device or a chip included in the network device, the communication interface can be a chip input/output interface.
  • the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.
  • an embodiment of the present application provides a chip system, including: a processor, where the processor is coupled to a memory, and the memory is used to store a program or an instruction, when the program or instruction is executed by the processor , so that the chip system implements the methods in the above aspects.
  • the chip system further includes an interface circuit, and the interface circuit is used to exchange code instructions to the processor.
  • processors in the chip system, and the processors may be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor implemented by reading software codes stored in memory.
  • the memory can be integrated with the processor, or can be provided separately from the processor.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be provided on different chips.
  • the embodiments of the present application provide a computer-readable storage medium on which a computer program or instruction is stored, and when the computer program or instruction is executed, the communication device is made to perform the above aspects or any one of the aspects. possible design methods.
  • an embodiment of the present application provides a computer program product that, when a communication device executes the computer program product, causes the communication device to execute the above aspects or the methods in any possible designs of the various aspects.
  • an embodiment of the present application provides a communication system, where the communication system includes a network device and at least one terminal device.
  • the communication system may further include core network equipment.
  • FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of the application is applicable;
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of multiplexing a first message and first uplink data in an embodiment of the present application
  • FIG. 4 is a schematic diagram of a CU node and a DU node in a network device in an embodiment of the present application cooperating to receive first uplink data;
  • FIG. 5 is a schematic diagram of two processes that can be initiated when a terminal device has uplink data to be transmitted in an embodiment of the present application
  • FIG. 6 is a schematic diagram of a terminal device receiving a response message in an embodiment of the present application.
  • FIG. 7 , FIG. 8 , and FIG. 9 are schematic structural diagrams of a communication apparatus according to an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • 5G fifth generation mobile communication systems or new radio (NR) systems
  • NR new radio
  • FIG. 1 is a schematic diagram of a network architecture of a communication system provided by the present application.
  • the communication system includes a core network device 110, a radio access network device 120 and at least one terminal device (such as the terminal device 130 and the terminal device 140 in FIG. 1).
  • the terminal equipment is wirelessly connected to the wireless access network equipment, and the wireless access network equipment is wirelessly or wiredly connected to the core network equipment.
  • the core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or they can be one physical device. It integrates the functions of some core network equipment and some functions of the wireless access network equipment.
  • Terminal equipment can be fixed or movable.
  • FIG. 1 is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .
  • the embodiments of the present application do not limit the number of core network devices, wireless access network devices, terminal devices, and other network devices included in the communication system.
  • the radio access network devices in the embodiments of the present application may correspond to different devices in communication systems of different types or standards.
  • they correspond to the access network devices in 5G, such as gNB or ng-eNB
  • the 4G system Corresponds to access network equipment in 4G, such as eNB or en-gNB.
  • the radio access network device and the terminal device can communicate through licensed spectrum, communicate through unlicensed spectrum, or communicate through licensed spectrum and unlicensed spectrum at the same time.
  • the wireless access network equipment and the terminal equipment can communicate through the frequency spectrum below 6 GHz (gigahertz, GHz), and can also communicate through the frequency spectrum above 6 GHz, and can also use the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz at the same time. communication.
  • This embodiment of the present application does not limit the spectrum resources used between the network device and the terminal device.
  • the radio access network equipment and terminal equipment in the embodiments of the present application can be deployed on land, including indoors or outdoors, handheld or vehicle mounted; can also be deployed on water; and can also be deployed on airplanes, balloons, and artificial satellites in the air.
  • the embodiments of the present application do not limit the application scenarios of the network device and the terminal device.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It can be seen that, with the evolution of the communication network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the terminal device involved in the embodiments of this application is a device with a wireless transceiver function.
  • the terminal equipment is wirelessly connected to the wireless access network equipment, so as to be connected to the communication system.
  • a terminal device may also be referred to as a terminal, user equipment (UE), a mobile station, a mobile terminal, and the like.
  • the terminal equipment can be mobile phone, tablet computer, computer with wireless transceiver function, virtual reality terminal equipment, augmented reality terminal equipment, wireless terminal in industrial control, wireless terminal in unmanned driving, wireless terminal in remote surgery, smart grid wireless terminals in transportation security, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. Wait.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • Use such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the terminal device may also be an on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle passes the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit.
  • a unit may implement the methods of the present application.
  • the wireless access network device involved in the embodiments of the present application is a device in the network for connecting a terminal device to a wireless network.
  • a radio access network device is a node in a radio access network (radio access network, RAN), which may also be referred to as a base station, and may also be referred to as a RAN node (or device).
  • RAN radio access network
  • wireless access network equipment may be referred to as access network equipment or network equipment for short. Unless otherwise specified, the following access network equipment or network equipment refers to wireless access network equipment.
  • the radio access network equipment may be a base station (base station), an evolved base station (evolved NodeB, eNodeB) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-A), a next-generation base station ( next generation NodeB (gNB), transmission reception point (TRP), base band unit (BBU), WiFi access point (AP), base station in future mobile communication system or WiFi system access node, etc.
  • the radio access network device may also be a module or unit that completes some functions of the base station, for example, may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU).
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device.
  • the radio access network device may be a CU node, a DU node, or an access network device including a CU node and a DU node.
  • the CU node can support functions of radio resource control (RRC), packet data convergence protocol (PDCP), and service data adaptation protocol (SDAP);
  • DU nodes can It supports the functions of radio link control (RLC) layer protocol, medium access control (MAC) layer protocol and physical layer protocol.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • SDAP service data adaptation protocol
  • RLC radio link control
  • MAC medium access control
  • the core network equipment involved in the embodiments of this application refers to equipment in a core network (core network, CN) that provides service support for terminal equipment.
  • the core network equipment may include entities such as an access and mobility management function (AMF), a session management function (SMF), and a user plane function (UPF).
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • AMF access management and mobility management of terminal equipment
  • SMF is used for session management, such as user session establishment
  • UPF is a functional entity of the user plane, mainly responsible for connecting to external networks.
  • AMF entities may also be referred to as AMF network elements or AMF functional entities
  • SMF entities may also be referred to as SMF network elements or SMF functional entities
  • the core network device may refer to the AMF.
  • “Plurality” refers to two or more than two, and in view of this, “plurality” may also be understood as “at least two” in the embodiments of the present application.
  • “At least one” can be understood as one or more, such as one, two or more. For example, including at least one means including one, two or more, and does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C may be included. Similarly, the understanding of descriptions such as “at least one” is similar.
  • ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority, or importance of multiple objects. Moreover, the description of “first” and “second” does not limit the objects to be necessarily different.
  • the RRC states of the terminal equipment may include three types: RRC idle state (RRC_IDLE), RRC inactive state (RRC_INACTIVE) and RRC connected state (RRC_CONNECTED).
  • RRC idle state may be referred to as idle state for short
  • RRC inactive state may be referred to as inactive state or the third state for short
  • RRC connected state may be referred to as connected state for short.
  • the access network device When the terminal equipment is in the RRC connection state, there is a dedicated RRC connection between the terminal equipment and the access network equipment. At this time, the access network device directly configures the serving cell for the terminal device, so as to provide the service of data transmission.
  • the access network device can know the signal quality of the serving cell of the terminal device in real time, for example, whether the terminal device is still within the coverage of the serving cell.
  • the core network knows the access network device corresponding to the serving cell of the terminal device.
  • the dedicated RRC connection between the terminal device and the access network device is suspended (or suspended), and can enter the RRC connected state and resume the RRC connection through the RRC recovery process.
  • Both the terminal equipment and the former serving access network equipment maintain the context of the terminal equipment.
  • the terminal equipment chooses to camp on a cell according to the rules of cell selection or cell reselection.
  • the core network device directly sends the downlink data to the former serving access network device, but the former serving access network device may not know the current cell where the terminal device resides, and needs to pass the
  • the paging of the radio access network (RAN paging) learns the current camping cell of the terminal device.
  • the terminal device may receive a paging message, a synchronization signal, a broadcast message, and/or system information and the like from the access network device.
  • the terminal device When the terminal device is in the RRC idle state, there is no dedicated RRC connection between the terminal device and the access network device, and there is no dedicated connection between the terminal device and the core network device. Neither the terminal device nor the access network device saves the context of the terminal device.
  • the terminal equipment chooses to camp on a cell according to the rules of cell selection or cell reselection.
  • the core network equipment may not know the current camping cell of the terminal equipment. access network equipment. After learning that the current camping cell of the terminal device corresponds to the access network device, the core network device sends the downlink data from the core network device to the access network device, and then the access network device sends it to the terminal device.
  • the terminal device When the terminal device is in the RRC idle state, the terminal device may receive paging messages, synchronization signals, broadcast messages, and/or system information, etc. from the access network device.
  • Non-dynamic scheduling may also be called configuration scheduling.
  • DCI downlink control information
  • the access network device may pre-configure the terminal device with CG resources that can be used for multiple transmissions, and the terminal device may perform uplink transmission on the CG resources.
  • the CG resource may include two types, namely type 1 (type 1) and type 2 (type 2).
  • type 1 CG resources the access network device can send the CG configuration information (such as configuredGrantConfig) to the terminal device, and the CG configuration information can include the period of the resource, the time domain location and the frequency domain location of the resource, etc.
  • the configuration information of the CG may also include a modulation and coding scheme (modulation and coding scheme, MCS) corresponding to the resource.
  • MCS modulation and coding scheme
  • the configuration information of the CG may also include one or more of the following parameters: open-loop power control related parameters, waveform, redundancy version, redundancy version sequence, repetition times, frequency hopping mode, resource allocation type, Number of hybrid automatic repeat request (HARQ) processes, parameters related to demodulation reference signal (DMRS), and resource block group (RBG) size.
  • open-loop power control related parameters waveform, redundancy version, redundancy version sequence, repetition times, frequency hopping mode, resource allocation type, Number of hybrid automatic repeat request (HARQ) processes, parameters related to demodulation reference signal (DMRS), and resource block group (RBG) size.
  • the access network device may send configuration information of the CG to the terminal device, and the configuration information of the CG may include the period of the resource.
  • the configuration information of the CG may also include one or more of the following parameters: open-loop power control related parameters, waveform, redundancy version, redundancy version sequence, repetition times, frequency hopping mode, resource allocation type, DMRS related parameters and the number of HARQ processes.
  • the access network device may also send DCI to the terminal device to activate the resource.
  • the DCI may include one or more of the following parameters: the time domain location of the resource, the frequency domain location of the resource, and the MCS corresponding to the resource.
  • the configuration information of the CG is encapsulated in an RRC message, and the access network device may send an RRC message including the configuration information of the CG to the terminal device, notifying the terminal device of the configuration information of the CG.
  • the configuration information of the CG may also include other possible information, such as the identification information of the CG, which is not specifically limited.
  • the CG resources in the RRC connected state are all dedicated CG resources, which means that the CG resources are dedicated to a certain terminal device.
  • the CG resources in the RRC inactive state may be dedicated CG resources or shared CG resources, indicating that the CG resources may be dedicated to a terminal device or shared by multiple terminal devices.
  • the access network device can configure multiple CG resources for the terminal device.
  • the terminal equipment in the RRC inactive state may need to support both dedicated CG resources and shared CG resources.
  • the embodiment of the present application provides a communication method.
  • FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • the method includes:
  • Step S201 the network device sends first indication information to the terminal device.
  • the terminal device receives the first indication information from the network device.
  • the first indication information is used to indicate that the CG resource is a shared resource or a dedicated resource. In another embodiment, the first indication information is used to indicate whether the CG resource allows multiplexing of RRC messages and uplink data (or is used to indicate whether to allow multiplexing of RRC messages and uplink data on the CG resources).
  • the CG resource is used for the terminal equipment to perform uplink transmission in the RRC inactive state.
  • the network device is an access network device, and specifically refers to an access network device currently serving a terminal device.
  • Shared resources refer to resources that can be used by multiple terminal devices, and network devices cannot identify the identity of the terminal devices through the shared resources.
  • Dedicated resources refer to resources dedicated to a certain terminal device allocated by the network device and cannot be used by other terminal devices. Dedicated resources may also be called non-shared resources.
  • the network device can identify the identity of the terminal device through the dedicated resource, the dedicated resource can uniquely identify the terminal device within the cell, and different terminal devices can be assigned different time-frequency resources and/or DMRS configurations (such as DMRS ports and sequences) to Distinguish end devices.
  • the first indication information may be included in the configuration information of the CG. Except for the first indication information, for other content included in the configuration information of the CG, reference may be made to the above description, and details are not repeated here.
  • sending the first indication information by the network device to the terminal device may be: the network device sends the configuration information of the CG to the terminal device, where the configuration information of the CG includes the first indication information.
  • the terminal device receives the configuration information of the CG from the network device, and obtains the first indication information from the configuration information of the CG.
  • the configuration information of the above CG may be carried in an RRC release (release) message or an RRC reconfiguration (reconfiguration) message.
  • the terminal equipment in the RRC inactive state continues to remain in the RRC inactive state.
  • the terminal equipment in the RRC connected state enters the RRC inactive state.
  • the RRC release message may include a suspend configuration.
  • the terminal device may enter the RRC inactive state according to the suspend configuration therein, and suspend (or suspend) its relationship with the network device. RRC connection between.
  • Step S202 if the CG resource is a shared resource, or the CG resource allows multiplexing of the RRC message and the uplink data, the terminal device sends the first message and the first uplink data to the network device on the CG resource, and the first message can be used to Request to resume the RRC connection suspended by the end device.
  • the network device receives the first message and the first uplink data from the terminal device on the CG resource.
  • the terminal device may send the first uplink data to the network device on the CG resource.
  • the network device receives the first uplink data from the terminal device on the CG resource.
  • the CG resource is used for the terminal equipment to perform uplink transmission in the RRC inactive state. It can be understood that different types of CG resources (shared resources or dedicated resources) correspond to different uplink transmission contents.
  • the content of the uplink transmission may include the first message and the first uplink data, or may only include the first uplink data (without the first message).
  • the first message includes identification information of the terminal device.
  • the first message may include a deactivated wireless network temporary identification (inactive radio network temporary identification, I-RNTI) of the terminal device, a short (short) message integrity verification code (message authentication code for integrity, MAC-I ) or one or more pieces of information in the RRC connection resume cause (resume cause).
  • I-RNTI active radio network temporary identification
  • MAC-I message integrity verification code
  • RRC connection restoration reason is used to describe the reason why the terminal device requests to restore the RRC connection, for example, the first uplink data is high priority priority (such as short-latency needs) or low priority (such as long-latency needs).
  • the network device stores contexts of multiple terminal devices, and the context of each terminal device is assigned a unique identifier (I-RNTI). In this way, after receiving the first message, the network device can determine the context of the terminal device according to the I-RNTI in the first message, and check whether the terminal device is a legitimate terminal device according to the short MAC-I in the first message, And decide whether to resume the RRC connection suspended by the terminal device according to the RRC connection recovery reason.
  • I-RNTI unique identifier
  • the first message may be an RRC resume request message, which is used to request to resume the RRC connection suspended by the terminal device.
  • the RRC recovery request message may include one or more of the I-RNTI, short MAC-I and RRC connection recovery reason of the terminal device.
  • the network device can make the terminal device know that the first message is sent in the RRC inactive state. and the first uplink data, or only send the first uplink data (without the first message).
  • the terminal device can send the first message and the first uplink data to the network device on the CG resource, so that the network device can
  • the short MAC-I in the message performs identity authentication and verification on the terminal device, and obtains the context of the terminal device from the former serving network device of the terminal device according to the I-RNTI in the first message.
  • the network device may perform parsing processing on the first uplink data according to the context of the terminal device.
  • the terminal device does not send the first message on the CG resources, and the CG resources can all be used to send the uplink data of the terminal device. Thereby effectively improving resource utilization.
  • the multiplexing of the first message and the first uplink data may be as shown in (a) in FIG. 3 , the first message and the first uplink data are carried in the same protocol data.
  • the unit includes different MAC service data units (service data unit, SDU), such as MAC SDU1 and MAC SDU2 in the figure.
  • SDU service data unit
  • the PDU only includes the MAC SDU where the first uplink data is located.
  • the embodiments of the present application are also applicable to a scenario where a network device adopts a distributed architecture of CU-DU.
  • the following describes how the CU node and the DU node of the network device cooperate to receive the first uplink data from the terminal device in this scenario.
  • step S400 after the terminal device enters the RRC inactive state, if the second uplink data arrives, in step S401, the terminal device determines to use the first RLC configuration to send the second uplink data After the processing of the square, the first uplink data is obtained.
  • the terminal device can use the first RLC configuration to add an RLC header to the second uplink data, and set the RLC sequence number (sequence number, SN) and other sender's processing to obtain the first uplink data, the first uplink data.
  • the data can be RLC PDUs.
  • both the first uplink data and the second uplink data refer to data to be sent by the terminal device, and the terminal device obtains the first uplink data by performing RLC processing on the second uplink data.
  • the second uplink data refers to data (for example, RLC SDUs) before processing by the RLC layer
  • the first uplink data refers to data (for example, RLC PDUs) after RLC processing.
  • the terminal device receives the data to be sent from the application layer, it will perform a series of protocol layer processing on the data, and finally obtain the data sent to the network device through the air interface.
  • the terminal device can perform RLC layer processing on the RLC SDU to obtain an RLC PDU, and then send it to the MAC layer through a logical channel, perform MAC layer processing, obtain a MAC PDU, and then hand it over to the physical layer for physical layer processing, and finally pass the air interface. sent to the network device.
  • the first RLC configuration may include any one of an RLC acknowledged mode (acknowledged mode, AM) configuration, an RLC unacknowledged mode (unacknowledged mode, UM) configuration, and an RLC transparent mode (transparent mode, TM) configuration.
  • AM acknowledged mode
  • UM unacknowledged mode
  • TM transparent mode
  • the RLC AM mode requires the confirmation of the receiver, and supports the following functions: data packet number, automatic repeat request (automatic repeat request, ARQ) error correction (error correction through ARQ), reassembly, segmentation, duplicate packet detection, Protocol error detection.
  • RLC UM mode does not require acknowledgment from the receiver and supports the following functions: packet numbering, reassembly, fragmentation.
  • RLC TM mode does not require confirmation from the receiver, and supports the following functions: RLC transparent transmission, no processing.
  • the first RLC configuration may be a default RLC configuration
  • the default RLC configuration refers to a configuration pre-specified by a protocol, a configuration that can be directly used by a terminal device, and does not require special configuration by a network device.
  • the terminal device sends the first uplink data to the DU node of the network device.
  • the DU node of the network device receives the first uplink data from the terminal device.
  • the first uplink data may be multiplexed with the first message in the same MAC PDU and transmitted together (corresponding to the case where the CG resource is a shared resource), or may not be multiplexed with the first message in the same MAC PDU and transmitted together ( Corresponding to the case where the CG resource is a dedicated resource), it is not limited.
  • the DU node may temporarily buffer the first uplink data in the DU node.
  • the DU node saves multiple RLC configurations, but since the DU node does not know which RLC configuration the terminal device uses to perform sender processing on the first uplink data, the first uplink data cannot be processed by the DU node.
  • the receiver processes, for example, the first RLC configuration used by the terminal device may be the default RLC configuration, but the DU node does not know which of the default RLC AM configuration, default RLC UM configuration, and default RLC TM configuration the default RLC configuration used by the terminal device is.
  • the DU node does not know which RLC configuration the terminal device uses. For example, the length information of the sequence number corresponding to the first uplink data is not clear, and the format information corresponding to the first uplink data is not clear.
  • the DU node sends a first request message to the CU node, where the first request message is used to request the first RLC configuration used by the terminal device.
  • the first request message may also be used to notify the CU node that the first uplink data of the terminal device arrives at the DU node.
  • the first request message may carry a logical channel identifier corresponding to the first uplink data, so that the CU node knows which RLC configuration is used to parse the first uplink data to obtain the second uplink data.
  • the terminal device may also send the logical channel identifier corresponding to the first uplink data.
  • the DU node may also carry the first request message when sending the first request message to the CU node.
  • Logical channel identifier corresponding to uplink data may be configured with a mapping relationship between the logical channel identifier and the RLC configuration, so that the CU node can determine the first RLC configuration used by the terminal device according to the logical channel identifier corresponding to the first uplink data.
  • the CU node sends a first response message to the DU node, where the first response message includes information used to indicate the first RLC configuration used by the terminal device.
  • the first response message may include type information of the first RLC configuration, and the type information is used to indicate the RLC AM configuration or the RLC UM configuration or the RLC TM configuration. Therefore, the DU node can configure the type information according to the first RLC configuration.
  • a first RLC configuration is determined.
  • the DU node stores multiple RLC configurations (such as RLC AM configuration, RLC UM configuration, and RLC TM configuration), and the DU node can determine the first RLC configuration from the stored multiple RLC configurations according to the type information of the first RLC configuration.
  • An RLC configuration is which RLC configuration among RLC AM configuration, RLC UM configuration, and RLC TM configuration.
  • the terminal device can obtain the first uplink data after processing the second uplink data by using the first RLC configuration, and use it to indicate the first uplink data.
  • Both information of an RLC configuration and the first uplink data are sent to the DU node of the network device, so that the DU node determines the first RLC configuration, and after receiving the first uplink data, according to the first RLC It is configured to perform processing such as parsing on the first uplink data, so as to obtain the second uplink data.
  • the information of the first RLC configuration and the first uplink data may be sent in the same transmission, or may be sent in different transmissions, which is not limited here.
  • the information used for the first RLC configuration may be the type information of the RLC configuration, and the type information is used to indicate the RLC AM configuration or the RLC UM configuration or the RLC TM configuration, so that the DU node of the network device determines according to the type information.
  • the first RLC configuration may be the type information of the RLC configuration, and the type information is used to indicate the RLC AM configuration or the RLC UM configuration or the RLC TM configuration, so that the DU node of the network device determines according to the type information.
  • step S405 the DU node performs receiver processing on the first uplink data according to the first RLC configuration, such as removing the RLC header, to obtain the second uplink data.
  • the DU node may send the second uplink data to the CU node.
  • the terminal device when the terminal device has uplink data to be transmitted in the RRC active state, the terminal device can initiate two processes as shown in Figure 5.
  • Process 1 refers to the scenario of transmitting user plane data in the RRC connection state, which specifically includes: step S501-a, the terminal device sends an RRC resume request message to the network device to request to resume the RRC connection suspended by the terminal device and enter the RRC connection state.
  • Step S502-a if the network device decides to restore the RRC connection of the terminal device, it sends an RRC recovery message to the terminal device to notify the terminal device to restore the RRC connection and enter the RRC connection state.
  • Step S503-a after the RRC connection of the terminal device is recovered, the terminal device sends an RRC recovery complete message to the network device, notifying the network device that its RRC connection recovery is completed, and enters the RRC connection state.
  • Step S504-a the terminal device sends uplink data to the network device in the RRC connection state.
  • Process 2 refers to a scenario in which user plane data is transmitted in an RRC inactive state, and specifically includes step S501-b, the terminal device sends an RRC recovery request message and uplink data to the network device.
  • Step S502-b the network device sends an RRC recovery message or an RRC release message to the terminal device, wherein the RRC recovery message is used to recover the RRC connection of the terminal device, and the RRC release message is used to instruct the terminal device to remain in the RRC inactive state. state.
  • the RRC recovery request message and uplink data in step S501-b can be omitted.
  • the terminal device may decide which process to specifically initiate according to the current data to be transmitted and related configurations. Specifically, the terminal device may determine whether to initiate process 1 or process 2 according to the expected number of transmissions or data radio bearer (DRB) information corresponding to the first uplink data. If the terminal device chooses to initiate process 1, the terminal device can transmit uplink data after entering the RRC connection state. If the terminal device chooses to initiate process 2, the terminal device can transmit uplink data in the RRC inactive state. For example, the terminal device may send uplink data to the network device on the CG resource.
  • DRB data radio bearer
  • the terminal device can select the initiation process 2 according to the expected number of transmissions or the DRB information corresponding to the first uplink data, indicating that the terminal device determines that the RRC is in the inactive state.
  • the first uplink data is transmitted through the CG resource.
  • the terminal device may also send uplink data to the network device when performing random access (random access, RA).
  • the expected number of transmissions is determined by the terminal device, for example, according to the current data to be transmitted or the characteristics of the interaction between the server and the client process, and it refers to the expected number of transmissions of the data to be transmitted by the terminal device. It should be noted that the expected number of transmissions may include the expected number of transmissions for uplink transmissions, and/or the expected number of transmissions for downlink transmissions. That is to say, the data to be transmitted by the terminal device here may include uplink data and/or downlink data to be transmitted, which is not limited.
  • the terminal device can send the first transmission through RA or CG, and then the terminal device can use dynamic scheduling for subsequent transmissions. If the terminal equipment undergoes cell reselection, the terminal equipment continues to remain in the RRC inactive state, and then the terminal equipment needs to stop the current RRC recovery process carrying user data and re-initiate the RRC recovery process carrying user data.
  • the DRB information of the first uplink data means that the network device can configure the corresponding relationship between each DRB and whether the data can be transmitted in the RRC inactive state for the terminal device. For example, the data of the first DRB can be transmitted in the RRC inactive state. However, the data of the second DRB cannot be transmitted in the RRC inactive state, but can only be transmitted in the RRC connected state. Therefore, the terminal device can judge whether the first uplink data can pass through the DRB information of the first uplink data. Transmission in the inactive state of RRC.
  • the terminal device may select process 1 to request to enter the RRC connected state, so as to transmit the first uplink data in the RRC connected state. Otherwise, if the expected number of transmissions is less than or equal to the corresponding threshold value, the terminal device may select process 2 to transmit the first uplink data in the RRC inactive state.
  • the terminal device may select process 1. , request to enter the RRC connected state, so as to transmit the first uplink data in the RRC connected state. Otherwise, if the first uplink data does not include the data of the second DRB and the data of other DRBs that cannot be transmitted in the RRC inactive state, the terminal device can select process 2 to transmit the first uplink in the RRC inactive state. data.
  • the terminal device may also send the expected number of transmissions to the network device on the CG resource or during the random access process.
  • the network device can decide whether to resume the RRC connection suspended by the terminal device according to the expected number of transmissions, so that the terminal device enters the RRC connected state from the RRC inactive state. For example, if the expected number of transmissions is large, the network device may choose to restore the RRC connection of the terminal device, so that the terminal device performs data transmission in the RRC connection state, thereby improving data transmission efficiency.
  • the network device can send the expected number of transmissions to the former serving network device of the terminal device.
  • the network device here refers to the network device that the terminal device currently initiates the RRC recovery process.
  • the former serving network device is the network device that initiated the RRC recovery process last time by the terminal device, and the former serving network device saves the context of the terminal device.
  • the former serving network device may decide whether to send the context of the terminal device to the network device according to the expected number of transmissions. For example, when the expected number of transmissions is large, the former serving network device can send the context of the terminal device to the network device to perform anchor relocation.
  • the network device After receiving the context of the terminal device, the network device decides to let the terminal device enter the RRC connection. state, and send an RRC recovery message to the terminal device to notify the terminal device to enter the RRC connected state.
  • the former serving network device does not send the context of the terminal device to the network device, and does not perform anchor point transfer.
  • the network device After receiving the first uplink data, the network device sends the first uplink data to the former serving network device.
  • the serving network device sends the first uplink data to the gateway.
  • the network device may send the first uplink data to the terminal device. response message.
  • the network device may give corresponding instructions on how the terminal device receives the response message in advance.
  • the network device sends second indication information to the terminal device, where the second indication information is used to indicate the first search space type.
  • the terminal device may receive the second indication information from the network device.
  • the second indication information may be included in the configuration information of the CG.
  • step S602 the terminal device sends the first uplink data to the network device.
  • the first uplink data may be multiplexed and transmitted together with the first message, or may be transmitted independently, which is not limited.
  • step S603 the network device sends a response message to the terminal device, where the response message includes the network device's feedback on the first message or the first uplink data.
  • the terminal device receives a response message from the network device according to the first search space type.
  • the terminal device may determine the search space according to the first search space type, and then detect the response message from the network device in the determined search space.
  • the search space is also called a physical downlink control channel (physical downlink control channel, PDCCH) search space, and refers to an area where DCI is transmitted, such as a time domain location.
  • PDCCH physical downlink control channel
  • the network device may send the response message in a multicast manner, or may send the response message in a unicast manner, which is not limited.
  • the first search space type indicated by the network device is related to the manner in which the network device sends the response message. That is, the network device can indicate different search space types to the response message sent by multicast and the response message sent by unicast, and different search space types will correspond to different search spaces. For example, if a network device sends a response message by multicast, the network device may indicate search space type 1, and the search space corresponding to search space type 1 is used to receive response messages from multiple terminal devices sent by multicast. The response messages of each terminal device are contained in the same PDU.
  • the network device may indicate search space type 2, and the search space corresponding to search space type 2 is used to receive a response message from a terminal device sent by unicast, and the PDU only includes this A response message from an end device.
  • the terminal device can detect response messages sent by the network device in different ways in different types of search spaces.
  • the terminal device may determine, according to the first search space type indicated by the second indication information, the manner in which the network device sends the response message, that is, sending in a multicast manner or in a unicast manner.
  • the content of the response messages sent in different ways may also be different.
  • the response message may include a hybrid automatic repeat request acknowledgment (HARQ) feedback of the network device to the first uplink data.
  • HARQ hybrid automatic repeat request acknowledgment
  • the response message may be used to notify the terminal device to keep the RRC inactive state, and optionally, the response message may be an RRC release message.
  • FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 700 includes a transceiver module 710 and a processing module 720 .
  • the communication apparatus can be used to implement the functions related to the terminal device in any of the foregoing method embodiments.
  • the communication device may be a terminal device, such as a handheld terminal device or a vehicle-mounted terminal device; the communication device may also be a chip or circuit included in the terminal device, or a device including the terminal device, such as various types of vehicles.
  • the communication apparatus may be used to implement the functions related to the network device in any of the foregoing method embodiments.
  • the communication apparatus may be a network device or a chip or circuit included in the network device.
  • the transceiver module 710 is configured to receive the first indication information from the network equipment, and the first indication information uses To indicate that the CG resource is a shared resource or a dedicated resource, or the first indication information is used to indicate whether the CG resource allows the RRC message to be multiplexed with uplink data, and the CG resource is used for the terminal device to perform uplink transmission in the RRC inactive state;
  • the processing module 720 is configured to, if the CG resource is a shared resource, or if the CG resource allows multiplexing of the RRC message and uplink data, send the first message and the first uplink data to the network device on the CG resource through the transceiver module 710, and the first message and the first uplink data are sent to the network device on the CG resource.
  • a message is used to request to resume the RRC connection suspended by the terminal equipment.
  • the transceiver module 710 is configured to send first indication information to the terminal device, where the first indication information is used to indicate that the CG resource is a Shared resources or dedicated resources, or the first indication information is used to indicate whether the CG resources allow RRC messages to be multiplexed with uplink data, and the CG resources are used for the terminal equipment to perform uplink transmission in the RRC inactive state; the processing module 720 is used for , if the CG resource is a shared resource, or if the CG resource allows multiplexing of RRC messages and uplink data, the transceiver module 710 receives the first message and the first uplink data from the terminal device on the CG resource, and the first message is used for Request to resume the RRC connection suspended by the end device.
  • the first indication information is used to indicate that the CG resource is a Shared resources or dedicated resources, or the first indication information is used to indicate whether the CG resources allow RRC messages to be multiplexed with uplink data, and the CG resources are used for the terminal equipment to
  • the processing module 720 involved in the communication apparatus may be implemented by at least one processor or a processor-related circuit component, and the transceiver module 710 may be implemented by at least one transceiver or a transceiver-related circuit component or a communication interface.
  • the operations and/or functions of each module in the communication device are respectively in order to realize the corresponding flow of the method shown in FIG. 2 , FIG. 4 , FIG. 5 , or FIG. 6 , and are not repeated here for brevity.
  • the communication device may further include a storage module, which may be used to store data and/or instructions, and the transceiver module 710 and/or the processing module 720 may read the data and/or instructions in the access module, Thereby, the communication device can implement the corresponding method.
  • the memory module can be implemented, for example, by at least one memory.
  • the above-mentioned storage module, processing module, and transceiver module may exist separately, or all or part of the modules may be integrated, for example, the storage module and the processing module are integrated, or the processing module and the transceiver module are integrated.
  • the communication device may be a terminal device, and the communication device may be used to implement the functions related to the terminal device in any of the foregoing method embodiments.
  • the terminal device takes a mobile phone as an example.
  • the terminal device includes a processor, may also include a memory, and of course, may also include a radio frequency circuit, an antenna, an input and output device, and the like.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, and process data of software programs.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 8 only one memory and processor are shown in FIG. 8 . In an actual end product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with a transceiver function may be regarded as a transceiver unit of the terminal device, and the processor with a processing function may be regarded as a processing unit of the terminal device.
  • the terminal device includes a transceiver unit 810 and a processing unit 820 .
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like.
  • the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the transceiver unit 810 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 810 may be regarded as a transmitting unit, that is, the transceiver unit 810 includes a receiving unit and a transmitting unit.
  • the transceiver unit may also sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like. It should be understood that the transceiving unit 810 is configured to perform the sending and receiving operations on the terminal side in the above method embodiments, and the processing unit 820 is configured to perform other operations on the terminal except the transceiving operations in the above method embodiments.
  • FIG. 9 is another schematic structural diagram of a communication apparatus provided in an embodiment of the present application.
  • the communication apparatus may specifically be a network device, such as a base station, for implementing the functions related to the network device in any of the foregoing method embodiments.
  • the network device 900 includes: one or more DUs 901 and one or more CUs 902.
  • the DU 901 may include at least one antenna 9011, at least one radio frequency unit 9012, at least one processor 9013 and at least one memory 9014.
  • the DU 901 is mainly used for transmitting and receiving radio frequency signals, converting radio frequency signals to baseband signals, and part of baseband processing.
  • the CU 902 may include at least one processor 9022 and at least one memory 9021.
  • the CU 902 is mainly used to perform baseband processing, control the base station, and the like.
  • the CU 902 is the control center of the base station, and may also be referred to as a processing unit.
  • the CU 902 may be used to control the base station to perform the operations or steps corresponding to the network device in the method shown in the above-mentioned FIG. 2 , FIG. 4 , FIG. 5 or FIG. 6 .
  • the CU 902 and the DU 901 can communicate through an interface, wherein the control plane (CP) interface can be Fs-C, such as F1-C, the user plane (UP) interface can be Fs-U, Such as F1-U.
  • the DU 901 and the CU 902 may be physically set together, or may be physically set apart (ie, distributed base stations), which is not limited.
  • the baseband processing on the CU and DU can be divided according to the protocol layers of the wireless network.
  • the functions of the PDCP layer and the above protocol layers are set in the CU, and the function settings of the protocol layers below the PDCP layer (such as the RLC layer and the MAC layer, etc.) are set. in DU.
  • the CU implements the functions of the RRC and PDCP layers
  • the DU implements the functions of the RLC, MAC, and physical (physical, PHY) layers.
  • the network device 900 may include one or more radio frequency units (RUs), one or more DUs and one or more CUs.
  • the DU may include at least one processor 9013 and at least one memory 9014
  • the RU may include at least one antenna 9011 and at least one radio frequency unit 9012
  • the CU may include at least one processor 9022 and at least one memory 9021 .
  • the CU 902 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network (such as a 5G network) with a single access indication, or may support different access standards respectively wireless access network (such as LTE network, 5G network or other networks).
  • the memory 9021 and the processor 9022 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • the DU 901 can be composed of one or more single boards, and multiple single boards can jointly support a wireless access network (such as a 5G network) with a single access indication, or can respectively support a wireless access network with different access standards (such as LTE network, 5G network or other network).
  • the memory 9014 and processor 9013 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • An embodiment of the present application further provides a chip system, including: a processor, where the processor is coupled with a memory, the memory is used to store a program or an instruction, and when the program or instruction is executed by the processor, the The chip system implements a method corresponding to a terminal device or a method corresponding to a network device in any of the foregoing method embodiments.
  • the number of processors in the chip system may be one or more.
  • the processor can be implemented by hardware or by software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor implemented by reading software codes stored in memory.
  • the memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated with the processor on the same chip, or can be provided on different chips.
  • the setting method of the processor is not particularly limited.
  • the system-on-chip may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC), It can also be a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller).
  • controller unit, MCU it can also be a programmable logic device (PLD) or other integrated chips.
  • each step in the above method embodiments may be implemented by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the method steps disclosed in conjunction with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • Embodiments of the present application further provide a computer-readable storage medium, where computer-readable instructions are stored in the computer storage medium, and when the computer reads and executes the computer-readable instructions, the computer is made to execute any of the foregoing method embodiments method in .
  • Embodiments of the present application further provide a computer program product, which, when the computer reads and executes the computer program product, causes the computer to execute the method in any of the above method embodiments.
  • An embodiment of the present application further provides a communication system, where the communication system includes a network device and at least one terminal device.
  • the communication system may further include core network equipment.
  • processors mentioned in the embodiments of the present application may be a CPU, other general-purpose processors, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • many forms of RAM are available, such as static random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, enhanced synchronous dynamic random access memory Random Access Memory, Synchronous Attached Dynamic Random Access Memory, and Direct Memory Bus Random Access Memory.
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module
  • memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be 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 in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums that can store program codes.

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

Abstract

La présente invention concerne un procédé et un appareil de communication. Le procédé comprend : l'envoi, par un dispositif de réseau, de premières informations d'indication à un dispositif de terminal, les premières informations d'indication étant utilisées pour indiquer qu'une ressource CG est une ressource partagée ou une ressource dédiée, ou étant utilisées pour indiquer si la ressource CG permet le multiplexage d'un message RRC avec des données de liaison montante, et la ressource CG étant utilisée pour que le dispositif de terminal réalise une transmission de liaison montante dans un état RRC inactif ; et si la ressource CG est une ressource partagée ou la ressource CG permet le multiplexage d'un message RRC avec des données de liaison montante, l'envoi, par le dispositif de terminal, d'un premier message et de premières données de liaison montante au dispositif de réseau sur la ressource CG, ce qui permet au dispositif de terminal d'accomplir une transmission CG dans un état RRC inactif. Le premier message est utilisé pour demander la restauration d'une connexion RRC suspendue par le dispositif de terminal, et le dispositif de réseau peut, sur la base du premier message, identifier l'identité du dispositif de terminal, analyser les premières données de liaison montante envoyées par le dispositif de terminal et déterminer s'il faut restaurer la connexion RRC suspendue par le dispositif de terminal.
PCT/CN2020/141895 2020-12-31 2020-12-31 Procédé et appareil de communication Ceased WO2022141332A1 (fr)

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