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WO2021174467A1 - Procédé de transmission de données, dispositif électronique et support de stockage - Google Patents

Procédé de transmission de données, dispositif électronique et support de stockage Download PDF

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Publication number
WO2021174467A1
WO2021174467A1 PCT/CN2020/077856 CN2020077856W WO2021174467A1 WO 2021174467 A1 WO2021174467 A1 WO 2021174467A1 CN 2020077856 W CN2020077856 W CN 2020077856W WO 2021174467 A1 WO2021174467 A1 WO 2021174467A1
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WIPO (PCT)
Prior art keywords
small data
indication information
terminal device
data
pusch
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Ceased
Application number
PCT/CN2020/077856
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English (en)
Chinese (zh)
Inventor
李海涛
石聪
林雪
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.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2020/077856 priority Critical patent/WO2021174467A1/fr
Priority to CN202080093620.8A priority patent/CN114982336B/zh
Publication of WO2021174467A1 publication Critical patent/WO2021174467A1/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
    • H04W28/00—Network traffic management; Network resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a data transmission method, electronic equipment, and storage medium.
  • RACH Random Access Channel
  • embodiments of the present application provide a data transmission method, electronic device, and storage medium, which can effectively utilize network resources.
  • the embodiments of this application provide a data transmission method, including: a terminal device transmits small data or transmits small data based on the maximum transmission block size of the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) in the first type of random access Small data instructions.
  • a terminal device transmits small data or transmits small data based on the maximum transmission block size of the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) in the first type of random access Small data instructions.
  • PUSCH Physical Uplink Shared Channel
  • an embodiment of the present application provides a data transmission method, including: a network device receives small data indication information, where the size of the small data to be transmitted by the terminal device is smaller than the PUSCH in the first type of random access In the case of the maximum transfer block size.
  • an embodiment of the present application provides a terminal device, and the terminal device includes:
  • the first sending unit is configured to transmit small data or transmit small data indication information based on the maximum transmission block size of the physical uplink shared channel PUSCH in the first type of random access.
  • an embodiment of the present application provides a network device, including: a fourth receiving unit configured to receive small data indication information, where the small data indication information is smaller than the size of the small data to be transmitted on the terminal device. It is transmitted in the case of the maximum transport block size of the physical uplink shared channel PUSCH during access.
  • an embodiment of the present application provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal when the computer program is running. The steps of the data transmission method performed by the device.
  • an embodiment of the present application provides a network device, including a processor and a memory configured to store a computer program that can run on the processor, wherein the processor is configured to execute the above-mentioned network when the computer program is running. The steps of the data transmission method performed by the device.
  • an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the data transmission method performed by the terminal device.
  • an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the data transmission method performed by the above-mentioned network device.
  • an embodiment of the present application provides a storage medium that stores an executable program, and when the executable program is executed by a processor, the above-mentioned data transmission method executed by the terminal device is implemented.
  • an embodiment of the present application provides a storage medium that stores an executable program, and when the executable program is executed by a processor, it implements the data transmission method executed by the aforementioned network device.
  • an embodiment of the present application provides a computer program product, including computer program instructions, which cause a computer to execute the above-mentioned data transmission method executed by the terminal device.
  • an embodiment of the present application provides a computer program product, including computer program instructions, which cause a computer to execute the data transmission method performed by the aforementioned network device.
  • an embodiment of the present application provides a computer program that enables a computer to execute the data transmission method executed by the above-mentioned terminal device.
  • an embodiment of the present application provides a computer program that enables a computer to execute the data transmission method executed by the aforementioned network device.
  • the data transmission method provided by the embodiment of the present application includes: the terminal device transmits small data or transmits small data indication information based on the maximum transmission block size of the physical uplink shared channel PUSCH in the first type of random access. If the size of the small data to be transmitted by the terminal device is less than the maximum transmission block size of the PUSCH, the terminal device can directly transmit the small data, which improves the efficiency of data transmission. If the size of the small data to be transmitted by the terminal device is less than the maximum transmission block size of the PUSCH, the terminal device can report small data indication information to the network device, such as reporting the size of the small data, for the network device to subsequently dynamically schedule the transmission of small data , Which in turn can save network equipment resources.
  • Figure 1 is a schematic diagram of the processing flow of the application for small data transmission
  • FIG. 2 is a schematic diagram of the processing flow of the second type of random access in this application.
  • FIG. 3 is a schematic diagram of the processing flow of the first type of random access in this application
  • FIG. 4 is a schematic diagram of the composition structure of a communication system according to an embodiment of the application.
  • FIG. 5 is a schematic diagram of an optional processing flow of a data transmission method provided by an embodiment of the application.
  • FIG. 6 is a schematic diagram of another optional processing flow of the data transmission method provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of the composition structure of a terminal device provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of the composition structure of a network device provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of the hardware composition structure of an electronic device according to an embodiment of the application.
  • 5G Enhance Mobile Broadband
  • URLLC Ultra Reliable Low Latency Communications
  • mMTC Massive Machine Type Communication
  • eMBB still aims for users to obtain multimedia content, services and data, and its demand is growing very rapidly. Since eMBB may be deployed in different scenarios, such as indoors, urban areas, rural areas, etc., the capabilities and requirements of eMBB vary greatly in different scenarios. Therefore, it cannot be generalized and must be analyzed in detail in conjunction with specific deployment scenarios.
  • Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery) and traffic safety assurance.
  • Typical features of mMTC include: high connection density, small data volume, delay-insensitive services, low-cost modules and long service life.
  • NR New Radio
  • the typical network coverage is wide-area LTE coverage and NR island coverage mode.
  • LTE systems are deployed in the frequency spectrum below 6GHz, there is very little spectrum below 6GHz that can be used for NR systems; therefore, NR systems must study spectrum applications above 6GHz.
  • high-frequency spectrum has limited coverage and signal Disadvantages of fast fading.
  • the NR system can also work independently.
  • the maximum channel bandwidth can be 400MHZ (wideband carrier). Compared with the maximum 20M bandwidth of the LTE system, the bandwidth of the NR system is very large.
  • EDT Early Data Transmission
  • the terminal device may always remain in an idle state, a suspend state, or an inactive state.
  • step a to step h the terminal device and the network
  • step e and step f the transmission of the uplink and/or downlink small data packets is completed between the network device and the serving gateway.
  • step e and step f the transmission of the uplink and/or downlink small data packets is completed between the network device and the serving gateway.
  • the terminal device completes the transmission of small data without entering the connected state; the transmission of small data is different from the terminal device entering the connected state to transmit MBB services.
  • the network device will configure a maximum transport block (TB) size (size) that the current network device allows to transmit on SIB2.
  • TB transport block
  • size size
  • the terminal device determines that the amount of data to be transmitted is less than the maximum TB size, then the terminal device EDT can be initiated; otherwise, the terminal device triggers the connection establishment process and enters the connected state to transmit data.
  • RACH includes: the first type of random access and the second type of random access.
  • the first type of random access two information exchanges are required between the terminal device and the network device. Therefore, the first type of random access is also called two-step random access (2-steps RACH).
  • the second type of random access the terminal device and the network device need to perform 4 information exchanges; therefore, the second type of random access is also called 4-steps RACH.
  • random access includes contention-based random access and non-contention-based random access.
  • random access includes the first type of random access and the second type of random access. The following briefly describes the first type of random access and the second type of random access.
  • the processing flow of the second type of random access includes the following four steps:
  • Step S101 The terminal device sends a random access preamble (Preamble) to the network device through Msg1.
  • Preamble a random access preamble
  • the terminal device sends the selected Preamble on the selected PRACH time domain resource; the network device can estimate the uplink Timing and the size of the uplink authorization required for the terminal device to transmit Msg3 based on the Preamble.
  • Step S102 After detecting that a terminal device sends a Preamble, the network device sends a random access response (Random Access Response, RAR) message to the terminal device through Msg2 to inform the terminal device of the uplink resource information that can be used when sending Msg3.
  • RAR Random Access Response
  • the equipment allocates a temporary radio network temporary identity (RNTI) to provide time advance command for terminal equipment.
  • RNTI temporary radio network temporary identity
  • Step S103 After receiving the RAR message, the terminal device sends Msg3 in the uplink resource specified by the RAR message.
  • the message of Msg3 is mainly used to notify the network device of what event triggered the RACH process. For example, if it is an initial random access event, the terminal device ID and establishment cause will be carried in Msg3; if it is an RRC reestablishment event, the connected terminal device identification and establishment cause will be carried in Msg3.
  • Step S104 The network device sends Msg4 to the terminal device, and Msg4 includes a contention resolution message, and at the same time allocates uplink transmission resources for the terminal device.
  • the terminal device When the terminal device receives the Msg4 sent by the network device, it will detect whether the terminal device specific temporary identifier sent by the terminal device in Msg3 is included in the contention resolution message sent by the base station. If it is included, it indicates that the random access process of the terminal device is successful, otherwise it is considered random If the process fails, the terminal device needs to initiate the random access process again from the first step.
  • Msg4 Another function of Msg4 is to send a radio resource control (Radio Resource Control, RRC) configuration message to the terminal device.
  • RRC Radio Resource Control
  • the above-mentioned RACH process requires four times of information exchange between the network equipment and the terminal equipment, resulting in the time extension of the RACH process; in order to solve the problem of the time extension of the RACH process, the first type of random access and the first type of random access processing are proposed.
  • the process as shown in Figure 3, includes the following steps:
  • Step S201 The terminal device sends MsgA to the network device.
  • MsgA is composed of Preamble and payload.
  • the preamble is the same as the preamble in the second type of random access, and the preamble is transmitted on the PRACH resource;
  • the information carried in the payload is the same as the information in the Msg3 in the second type of random access, for example, when the RRC is in an idle state
  • the payload can be transmitted by the Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the results of the network device receiving MsgA may include the following two types: the first type, the network device successfully decodes one or more preambles; the second type, the network device successfully decodes one or more preambles and one or more payloads.
  • Step S202 The terminal device receives the MsgB sent by the network device.
  • MsgB includes the content of Msg2 and Msg4 in the second type of random access.
  • PUSCH resources are pre-configured through broadcast messages, and PUSCH resources are used to carry RRC messages to be sent by terminal equipment; because the RRC messages at the initial establishment are of a fixed size, the PUSCH resources are The size is also fixed.
  • the PUSCH of the first type of random access needs to carry small data, so that the size of the pre-configured PUSCH resource also needs to be increased accordingly.
  • the network device is not sure when the terminal device initiates small data transmission, blindly increasing the size of the PUSCH resource will cause a waste of network resources. Therefore, how to perform reasonable and effective small data transmission in the first type of random access has not yet been clarified.
  • this application provides a data transmission method.
  • the technical solutions of the embodiments of this application can be applied to various communication systems, such as the global system of mobile communication (GSM) system, code division multiple access (code division multiple access, GSM) system, etc.
  • GSM global system of mobile communication
  • code division multiple access code division multiple access
  • CDMA compact code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • TDD LTE time division duplex
  • LTE-A advanced long term evolution
  • NR new radio
  • WiMAX worldwide interoperability for microwave access
  • WLAN wireless local area networks
  • WiFi wireless fidelity
  • WiFi Next-generation communication systems or other communication systems, etc.
  • the network equipment involved in the embodiments of this application may be a common base station (such as NodeB or eNB or gNB), a new radio controller (NR controller), a centralized network element (centralized unit), a new radio base station, Radio remote module, micro base station, relay, distributed unit, reception point (transmission reception point, TRP), transmission point (transmission point, TP), or any other equipment.
  • a common base station such as NodeB or eNB or gNB
  • NR controller new radio controller
  • a centralized network element centralized unit
  • a new radio base station Radio remote module
  • micro base station relay, distributed unit, reception point (transmission reception point, TRP), transmission point (transmission point, TP), or any other equipment.
  • TRP transmission reception point
  • TP transmission point
  • the terminal device may be any terminal.
  • the terminal device may be a user equipment for machine-type communication. That is to say, the terminal equipment can also be referred to as user equipment UE, mobile station (mobile station, MS), mobile terminal (mobile terminal), terminal (terminal), etc., and the terminal device can be accessed via a radio access network.
  • network, RAN communicates with one or more core networks.
  • the terminal device can be a mobile phone (or called a "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal device can also be a portable or pocket-sized , Handheld, computer built-in or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
  • the terminal device may be a user equipment for machine-type communication. That is to say, the terminal equipment can also be referred to as user equipment UE, mobile station (mobile station, MS), mobile terminal (mobile terminal), terminal (terminal), etc., and the terminal device can be accessed via a radio access network.
  • network, RAN
  • network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
  • communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through licensed spectrum, or through unlicensed spectrum, or through licensed spectrum and terminal equipment at the same time. Unlicensed spectrum for communication.
  • Between network equipment and terminal equipment and between terminal equipment and terminal equipment can communicate through the frequency spectrum below 7 gigahertz (gigahertz, GHz), can also communicate through the frequency spectrum above 7 GHz, and can also use the frequency spectrum below 7 GHz and Communication is performed in the frequency spectrum above 7GHz.
  • the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
  • D2D device to device
  • M2M machine to machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 4.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN wireless local area networks
  • IoT Internet of Things
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal devices 120 may perform direct terminal connection (Device to Device, D2D) communication.
  • D2D Direct terminal connection
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • Figure 4 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiment of the present application.
  • An optional processing procedure of the data transmission method provided in the embodiment of the present application, as shown in FIG. 5, includes the following steps:
  • Step S301 The terminal device transmits small data or transmits small data indication information based on the maximum transmission block size of the PUSCH in the first type of random access.
  • the network device in the first type of random access (2-step RACH), can configure the terminal device with 2-step RACH resources through system broadcast messages, such as random access opportunity (RACH Occasion, RO) and PUSCH resource.
  • RACH Occasion, RO random access opportunity
  • PUSCH resource indicates the maximum transport block (Transport Block, TB) size (size) that can be transmitted by the PUSCH.
  • the small data that the terminal device needs to transmit may be data in the EDT.
  • the terminal device may compare the size of the small data to be transmitted with the size of the TB size of the PUSCH; transmit the small data or transmit the small data indication information according to the size relationship between the two.
  • the following describes the data transmission method in the embodiment of the present application based on the different relationship between the size of the small data to be transmitted and the size of the TB size of the PUSCH.
  • the terminal device When the size of the small data to be transmitted by the terminal device is less than or equal to the maximum transmission block size, the terminal device transmits the small data.
  • the terminal device may only transmit the small data in the PUSCH.
  • the size of the data transmitted on the PUSCH is the size of the small data; that is, the resource in the 2-step RACH is a resource dedicated to the terminal device, and the resource may be configured by the network device to the terminal device when the connection is released.
  • the terminal device may transmit the small data and the radio resource control message through the PUSCH; that is, the small data and the radio resource control message are multiplexed on the PUSCH for transmission.
  • the size of the data transmitted on the PUSCH is the sum of the size of the small data and the size of the radio resource control message.
  • the radio resource control message may be a radio resource control resume request (RRC Resume Request) message.
  • the terminal device needs to further determine whether the small data to be transmitted is different from the indication information for transmitting the small data based on the first type of random access.
  • the size of the small data to be transmitted by the terminal device is greater than the maximum transmission block size, the size of the small data is not greater than the maximum amount of data that can be transmitted when the small data indication information is transmitted based on the first type of random access, And when the maximum transmission block size can accommodate the size of the small data indication information, the terminal device transmits the small data indication information.
  • the size of the small data to be transmitted is 1500 kb
  • the maximum transmission block size of PUSCH is 1000 kb
  • the size of the maximum amount of data that can be transmitted when the small data indication information is transmitted based on the first type of random access is 2000 kb ; That is, the size of the small data to be transmitted by the terminal device is greater than the maximum transmission block size, and the size of the small data is not greater than the maximum data that can be transmitted when the small data indication information is transmitted based on the first type of random access If the maximum transmission block size of the PUSCH can accommodate the size of the small data indication information, the terminal device transmits the small data indication information.
  • the terminal device only transmits the small data indication information through the PUSCH; in this scenario, the size of the data transmitted on the PUSCH is the size of the small data indication information. That is, the resources in the 2-step RACH are resources dedicated to the terminal equipment, and the resources may be configured by the network equipment to the terminal equipment when the connection is released.
  • the terminal device may transmit the small data indication information and the radio resource control message through the PUSCH; that is, the small data indication information and the radio resource control message are multiplexed on the PUSCH for transmission.
  • the size of the data transmitted on the PUSCH is the sum of the size of the small data indication information and the size of the radio resource control message.
  • the radio resource control message may be a radio resource control resume request (RRC Resume Request) message.
  • the terminal device transmits the small data indication information and part of the small data through the PUSCH; that is, the small data indication information and part of the data to be transmitted are multiplexed on the PUSCH for transmission.
  • the small data indication information may further indicate the size of the remaining data to be transmitted; so that after receiving the PUSCH, the network device can schedule the data through MsgB/RAR according to the small data size information indicated in the small data indication information.
  • the terminal equipment transmits small data on the PUSCH. Therefore, the terminal device may receive scheduling information sent by the network device, where the scheduling information is used to schedule the terminal device to transmit the remaining data to be transmitted.
  • the small data indication information may include: first indication information used to indicate small data, and/or second indication information used to indicate the size of the small data.
  • the first indication information indicates that the data to be transmitted by the terminal device is small data, and the first indication information may be only 1 bit.
  • the second indication information may be carried in the first MAC CE, or carried in the buffer status report (Buffer Status Report, BSR) MAC CE.
  • the first MAC CE is a new MAC CE that is different from the existing MAC CE; for example, the first MAC CE has a different form from the existing MAC CE, or carries different information content.
  • the data transmission method may further include:
  • Step S300 The terminal device receives third indication information, where the third indication information is used to indicate whether the terminal device is allowed to use the PUSCH to transmit the small data.
  • the third indication information may be sent by a network device. Only when the indication information is used to indicate that the terminal device is allowed to use the PUSCH to transmit the small data, the terminal device may be based on In the first type of random access, the maximum transmission block size of the PUSCH transmits the small data.
  • the data transmission method may further include:
  • step S300' the terminal device receives fourth indication information, where the fourth indication information is used to indicate the maximum amount of data that can be transmitted when the small data indication information is transmitted based on the first type of random access.
  • the foregoing is directed to scenarios where the size of small data is less than or equal to the maximum transmission block size, and the size of the small data is greater than the maximum transmission block size, and the size of the small data is not greater than that based on the first type of random access
  • the scenario of the maximum amount of data that can be transmitted when transmitting the small data indication information describes the data transmission method provided in the embodiment of the present application.
  • the network device does not allow the terminal device to use the PUSCH to transmit the small data, or the size of the small data to be transmitted by the terminal device is larger than the small data indication information that can be transmitted based on the first type of random access
  • the terminal device uses the first type of random access to establish a radio resource control connection; when the terminal device enters the connected state, the small data is transmitted.
  • Another optional processing procedure of the data transmission method provided by the embodiment of the present application, as shown in FIG. 6, includes the following steps:
  • Step S401 The network device receives small data or small data indication information through the PUSCH in the first type of random access.
  • the network device receives the small data when the size of the small data is less than or equal to the maximum transport block size of the PUSCH in the first type of random access.
  • the network device may only receive the small data through the PUSCH; or, the network device may receive and transmit the small data and the radio resource control message through the PUSCH.
  • the network device receives the small data indication information.
  • the small data indication information may include: first indication information used to indicate small data, and/or second indication information used to indicate a size of the small data.
  • the first indication information indicates that the data to be transmitted by the terminal device is small data, and the first indication information may be only 1 bit.
  • the second indication information may be carried in the first MAC CE, or carried in the BSR MAC CE.
  • the first MAC CE is a new MAC CE that is different from the existing MAC CE; for example, the first MAC CE has a different form from the existing MAC CE, or carries different information content.
  • the network device receiving small data indication information includes: the network device receives only the small data indication information through the PUSCH; or, the network device receives the small data indication through the PUSCH Information and radio resource control messages; or, the network device receives the small data indication information and part of the small data through the PUSCH.
  • the small indication information is also used to indicate the size of the remaining data to be transmitted in the small data .
  • the method may further include:
  • Step S402 The network device sends scheduling information, where the scheduling information is used to schedule the terminal device to transmit the remaining data to be transmitted.
  • the method may further include:
  • Step S400 The network device sends third indication information, where the third indication information is used to indicate whether the terminal device is allowed to use the PUSCH to transmit the small data.
  • the method may further include:
  • Step S400' the network device sends fourth indication information, where the fourth indication information is used to indicate the maximum amount of data that can be transmitted when the small data indication information is transmitted based on the first type of random access.
  • the first type of random access may be 2-step random access.
  • small data can be transmitted in a 2-step RACH. Specifically, if the size of the small data to be transmitted by the terminal device is less than the maximum TB size of the PUSCH, the terminal device can directly use MsgA for small data transmission; if the size of the small data to be transmitted by the terminal device is less than the maximum TB size of the PUSCH, then The terminal device can report small data indication information through MsgA, such as the size of the small data, so that the network device can subsequently dynamically schedule the transmission of the small data, thereby saving the resources of the network device.
  • MsgA such as the size of the small data
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • an embodiment of the present application further provides a terminal device.
  • the composition structure of the terminal device is as shown in FIG. 7, and the terminal device 500 includes:
  • the first sending unit 501 is configured to transmit small data or transmit small data indication information based on the maximum transmission block size of the PUSCH in the first type of random access.
  • the small data indication information includes: first indication information used to indicate the small data, and/or second indication information used to indicate the size of the small data.
  • the second indication information is carried in a first MAC CE or BSR MAC CE; the first MAC CE is different from the BSR MAC CE.
  • the terminal device 500 further includes:
  • the first receiving unit 502 is configured to receive third indication information, where the third indication information is used to indicate whether the terminal device is allowed to use the PUSCH to transmit the small data.
  • the terminal device 500 further includes:
  • the second receiving unit 503 is configured to receive fourth indication information, where the fourth indication information is used to indicate the maximum amount of data that can be transmitted when the small data indication information is transmitted based on the first type of random access.
  • the first sending unit 501 is configured to transmit the small data when the size of the small data is less than or equal to the maximum transmission block size.
  • the first sending unit 501 is configured to transmit only the small data through the PUSCH; or, to transmit the small data and the radio resource control message through the PUSCH.
  • the first sending unit 501 is configured to: when the size of the small data is greater than the maximum transmission block size, and the size of the small data is not greater than that based on the first type of random access transmission When the small data indicates the maximum amount of data that can be transmitted and the maximum transmission block size can accommodate the size of the small data indication information, the small data indication information is transmitted.
  • the first sending unit 501 is configured to transmit only the small data indication information through the PUSCH; or, transmit the small data indication information and the radio resource control message through the PUSCH.
  • the first sending unit 501 is configured to transmit the small data indication information and part of the small data through the PUSCH.
  • the small data indication information is also used to indicate the size of the remaining data to be transmitted in the small data.
  • the terminal device 500 further includes: a third receiving unit 504 configured to receive scheduling information, where the scheduling information is used to schedule the terminal device to transmit the remaining data to be transmitted.
  • the first sending unit 501 is further configured to allow the terminal device to use the PUSCH to transmit the small data in the network device, or the size of the small data is larger than the first In the case of the maximum amount of data that can be transmitted when the small data indication information is transmitted through random access, the first type of random access is used to establish a radio resource control connection; in the case of entering the connected state, the small data is transmitted .
  • the first type of random access includes: 2-step random access.
  • an embodiment of the present application also provides a network device.
  • the composition structure of the network device is as shown in FIG. 8, and the network device 600 includes:
  • the fourth receiving unit 601 is configured to receive small data or small data indication information through the PUSCH in the first type of random access.
  • the small data indication information includes: first indication information used to indicate the small data, and/or second indication information used to indicate the size of the small data.
  • the second indication information is carried in a first MAC CE or BSR MAC CE; the first MAC CE is different from the BSR MAC CE.
  • the network device 600 further includes: a second sending unit 602 configured to send third indication information, where the third indication information is used to indicate whether the terminal device is allowed to use the PUSCH to transmit the Small data.
  • the network device 600 further includes: a third sending unit 603 configured to send fourth indication information, where the fourth indication information is used to indicate that the small number is transmitted based on the first type of random access. The maximum amount of data that can be transmitted when the data indicates information.
  • the fourth receiving unit 601 is configured to receive the small data when the size of the small data is less than or equal to the maximum transport block size of the PUSCH in the first type of random access.
  • the fourth receiving unit 601 is configured to receive only the small data through the PUSCH; or, to receive and transmit the small data and the radio resource control message through the PUSCH.
  • the fourth receiving unit 601 is configured to: when the size of the small data is greater than the maximum transmission block size, and the size of the small data is not greater than that based on the first type of random access transmission When the small data indicates the maximum amount of data that can be transmitted and the maximum transmission block size can accommodate the size of the small data indication information, the small data indication information is received.
  • the fourth receiving unit 601 is configured to receive only the small data indication information through the PUSCH; or, to receive the small data indication information and the radio resource control message through the PUSCH.
  • the fourth receiving unit 601 is configured to receive the small data indication information and part of the small data through the PUSCH.
  • the small data indication information is also used to indicate the size of the remaining data to be transmitted in the small data.
  • the network device 600 further includes: a fourth sending unit 604 configured to send scheduling information, where the scheduling information is used to schedule the terminal device to transmit the remaining data to be transmitted.
  • the first type of random access includes: 2-step random access.
  • An embodiment of the present application also provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal device when the computer program is running.
  • the steps of the data transfer method are described in detail below.
  • An embodiment of the present application also provides a network device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to execute the above-mentioned network device when the computer program is running. The steps of the data transfer method.
  • An embodiment of the present application also provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the data transmission method performed by the terminal device.
  • An embodiment of the present application also provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the data transmission method performed by the above-mentioned network device.
  • the embodiment of the present application further provides a storage medium storing an executable program, and the executable program is executed by a processor to implement the data transmission method executed by the terminal device.
  • the embodiment of the present application also provides a storage medium storing an executable program, and the executable program is executed by a processor to implement the data transmission method executed by the above-mentioned network device.
  • the embodiments of the present application also provide a computer program product, including computer program instructions, which cause a computer to execute the data transmission method executed by the above-mentioned terminal device.
  • the embodiments of the present application also provide a computer program product, including computer program instructions, which cause a computer to execute the data transmission method executed by the above-mentioned network device.
  • An embodiment of the present application also provides a computer program that enables a computer to execute the data transmission method executed by the above-mentioned terminal device.
  • An embodiment of the present application also provides a computer program that enables a computer to execute the data transmission method executed by the above-mentioned network device.
  • FIG. 9 is a schematic diagram of the hardware composition structure of an electronic device (terminal device and network device) according to an embodiment of the present application.
  • the electronic device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704.
  • the various components in the electronic device 700 are coupled together through the bus system 705.
  • the bus system 705 is used to implement connection and communication between these components.
  • the bus system 705 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 705 in FIG. 9.
  • the memory 702 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
  • non-volatile memory can be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electrically erasable Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disk, or CD-ROM (CD) -ROM, Compact Disc Read-Only Memory); Magnetic surface memory can be disk storage or tape storage.
  • the volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • SSRAM synchronous static random access memory
  • Synchronous Static Random Access Memory Synchronous Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM synchronous connection dynamic random access memory
  • DRRAM Direct Rambus Random Access Memory
  • the memory 702 described in the embodiment of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 702 in the embodiment of the present application is used to store various types of data to support the operation of the electronic device 700.
  • Examples of such data include: any computer program used to operate on the electronic device 700, such as the application program 7022.
  • the program for implementing the method of the embodiment of the present application may be included in the application program 7022.
  • the method disclosed in the foregoing embodiment of the present application may be applied to the processor 701 or implemented by the processor 701.
  • the processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 701 or instructions in the form of software.
  • the aforementioned processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the processor 701 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 702.
  • the processor 701 reads the information in the memory 702 and completes the steps of the foregoing method in combination with its hardware.
  • the electronic device 700 may be used by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), and Complex Programmable Logic Device (CPLD). , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components to implement the foregoing method.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal processor
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • FPGA Complex Programmable Logic Device
  • controller MCU
  • MPU or other electronic components to implement the foregoing method.
  • the embodiment of the present application also provides a storage medium for storing computer programs.
  • the storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present application.
  • the storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present application.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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

Abstract

L'invention concerne un procédé de transmission de données selon lequel : un dispositif terminal transmet de petites données ou transmet des informations d'Indication de petites données sur la base de la taille de bloc de transmission maximale d'un canal partagé de liaison montante physique (PUSCH) dans un accès aléatoire de premier type. L'invention porte en outre sur un autre procédé de transmission de données, sur un dispositif terminal, sur un dispositif de réseau et sur un support de stockage.
PCT/CN2020/077856 2020-03-04 2020-03-04 Procédé de transmission de données, dispositif électronique et support de stockage Ceased WO2021174467A1 (fr)

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CN202080093620.8A CN114982336B (zh) 2020-03-04 2020-03-04 一种数据传输方法、电子设备及存储介质

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