[go: up one dir, main page]

WO2025175520A1 - Procédé de communication sans fil et dispositif de communication - Google Patents

Procédé de communication sans fil et dispositif de communication

Info

Publication number
WO2025175520A1
WO2025175520A1 PCT/CN2024/078116 CN2024078116W WO2025175520A1 WO 2025175520 A1 WO2025175520 A1 WO 2025175520A1 CN 2024078116 W CN2024078116 W CN 2024078116W WO 2025175520 A1 WO2025175520 A1 WO 2025175520A1
Authority
WO
WIPO (PCT)
Prior art keywords
message
terminal device
transmission
information
configuration information
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.)
Pending
Application number
PCT/CN2024/078116
Other languages
English (en)
Chinese (zh)
Inventor
胡奕
李海涛
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
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp 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 Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2024/078116 priority Critical patent/WO2025175520A1/fr
Priority to PCT/CN2024/090457 priority patent/WO2025175638A1/fr
Publication of WO2025175520A1 publication Critical patent/WO2025175520A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0836—Random access procedures, e.g. with 4-step access with 2-step access

Definitions

  • a terminal device In a communication system, a terminal device often needs to perform a random access process to perform uplink synchronization and/or data transmission with a network device.
  • the traditional random access process has the problem of high signaling overhead.
  • the present application provides a wireless communication method and a communication device.
  • the following introduces various aspects involved in the present application.
  • a wireless communication method including: a first terminal device initiating a first process; wherein, in the first process, the first terminal device transmits message 3 without transmitting message 1 and/or receiving a random access response message.
  • a wireless communication method including: a network device receives a message 3 sent by a first terminal device through a first process; wherein, in the first process, the first terminal device transmits message 3 without transmitting message 1 and/or receiving a random access response message.
  • a communication device which is a first terminal device, and includes: a processing unit for initiating a first process; wherein, in the first process, the first terminal device transmits message 3 without transmitting message 1 and/or receiving a random access response message.
  • a communication device which is a network device, and the communication device includes: a receiving unit for receiving a message 3 sent by a first terminal device through a first process; wherein, in the first process, the first terminal device transmits message 3 without transmitting message 1 and/or receiving a random access response message.
  • a communication device comprising a transceiver, a memory, and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the communication device executes the method described in the first aspect or the second aspect.
  • a device comprising a processor for calling a program from a memory so that the device executes the method as described in the first aspect or the second aspect.
  • a chip comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method as described in the first aspect or the second aspect.
  • a computer-readable storage medium on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.
  • a computer program product comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.
  • a computer program which enables a computer to execute the method as described in the first aspect or the second aspect.
  • the embodiment of the present application directly transmits message 3 without transmitting message 1 and message 2, which can reduce the signaling overhead of the random access process.
  • FIG. 2A-FIG . 2B are schematic diagrams of a random access process applicable to an embodiment of the present application.
  • FIG3 is a schematic diagram of a data transmission flow of EDT according to an embodiment of the present application.
  • FIG4 is a flow chart of a wireless communication method according to an embodiment of the present application.
  • FIG5 is a schematic flow chart of a wireless communication method according to another embodiment of the present application.
  • FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG7 is a schematic structural diagram of a communication device according to another embodiment of the present application.
  • FIG8 is a schematic diagram of the structure of the device provided in an embodiment of the present application.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE-A advanced long term evolution
  • NR new radio
  • LTE-based access to unlicensed spectrum (LTE-U) system LTE-based access to unlicensed spectrum (LTE-U) system
  • NR-based access to unlicensed spectrum (NR-U) system on unlicensed spectrum NTN
  • NTN non-terrestrial network
  • UMTS universal mobile telecommunication system
  • WLAN wireless local area networks
  • WiFi wireless fidelity
  • 5G fifth-generation
  • future communication systems such as sixth-generation mobile communication systems, and satellite communication systems.
  • D2D device-to-device
  • M2M machine-to-machine
  • MTC machine-type communication
  • V2V vehicle-to-vehicle
  • V2X vehicle-to-everything
  • CA carrier aggregation
  • DC dual connectivity
  • SA standalone
  • the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as a dedicated spectrum.
  • NTN systems as well as terrestrial networks (TN) systems.
  • TN systems include NR-based NTN systems and IoT-based NTN systems.
  • the terminal device may be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future-evolved public land mobile network (PLMN) network, etc.
  • STATION station
  • WLAN Wireless Local Area Network
  • a terminal device may be a device that provides voice and/or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device or vehicle-mounted device with wireless connection capabilities.
  • the terminal device in the embodiments of the present application may be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grids, a wireless terminal in transportation safety, a wireless terminal in smart cities, a wireless terminal in smart homes, etc.
  • MID mobile internet device
  • VR virtual reality
  • AR augmented reality
  • the terminal device may be used to act as a base station.
  • a terminal device can act as a dispatching entity, providing sidelink signals between terminal devices in V2X or D2D.
  • a cell phone and a car can communicate with each other using sidelink signals.
  • a cell phone and a smart home device can also communicate with each other without relaying the communication signal through a base station.
  • the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).
  • the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical care, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home.
  • VR virtual reality
  • AR augmented reality
  • the terminal device involved in the embodiments of the present application may also be referred to as a terminal, user equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal device, mobile device, UE, wireless communication device, UE agent, or UE device.
  • the terminal device may also be fixed or mobile.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses.
  • Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • the network device in the embodiments of the present application may be a device for communicating with a terminal device.
  • the network device may also be referred to as an access network device or a radio access network device.
  • the network device may be a base station.
  • the network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network.
  • RAN radio access network
  • base station can broadly cover the following various names or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc.
  • the base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof.
  • the base station can also refer to a communication module, a modem or a chip for being provided in the aforementioned device or apparatus.
  • the base station can also be a mobile switching center and a device to device D2D, vehicle-to-everything (V2X), a device that performs the base station function in machine-to-machine (M2M) communications, a network side device in a 6G network, a device that performs the base station function in a future communication system, and the like.
  • the base station can support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment.
  • Base stations can be fixed or mobile.
  • a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station.
  • a helicopter or drone can be configured to act as a device that communicates with another base station.
  • the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU.
  • the gNB may also include an AAU.
  • the network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites.
  • the embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.
  • a network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network device may be a satellite or a balloon station.
  • the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc.
  • the network device may also be a base station set up in a location such as land or water.
  • a network device may provide services for a cell, and a terminal device may communicate with the network device through the transmission resources used by the cell (e.g., frequency domain resources, or spectrum resources).
  • the cell may be a cell corresponding to a network device (e.g., a base station).
  • the cell may belong to a macro base station or a base station corresponding to a small cell.
  • the small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • Figure 1A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or also referred to as 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 within the coverage area.
  • Figure 1A exemplarily shows a network device and two terminal devices.
  • the communication system 100 may include multiple network devices and each network device may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.
  • FIG1B is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application.
  • a terminal device 1101 and a satellite 1102 are included, and wireless communication can be performed between the terminal device 1101 and the satellite 1102.
  • the network formed between the terminal device 1101 and the satellite 1102 can also be referred to as an NTN.
  • the satellite 1102 can have the function of a base station, and the terminal device 1101 and the satellite 1102 can communicate directly.
  • the satellite 1102 can be referred to as a network device.
  • the communication system may include multiple network devices 1102, and each network device 1102 may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.
  • FIG1C is a schematic diagram of the architecture of another communication system provided by an embodiment of the present application.
  • the system includes a terminal device 1201, a satellite 1202, and a base station 1203.
  • the terminal device 1201 and the satellite 1202 can communicate wirelessly.
  • the satellite 1202 and the base station 1203 can communicate wirelessly.
  • Stations 1203 can communicate with each other.
  • the network formed between the terminal device 1201, the satellite 1202 and the base station 1203 can also be referred to as an NTN.
  • the satellite 1202 may not have the function of a base station, and the communication between the terminal device 1201 and the base station 1203 needs to be relayed by the satellite 1202.
  • the base station 1203 can be referred to as a network device.
  • the communication system may include multiple network devices 1203, and each network device 1203 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.
  • Figures 1A-1C are only examples of the system to which this application is applicable.
  • the method shown in the embodiment of this application can also be applied to other systems, such as 5G communication systems, LTE communication systems, etc., and the embodiment of this application does not make specific limitations on this.
  • the wireless communication system shown in Figures 1A-1C may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but the embodiments of the present application are not limited to this.
  • MME mobility management entity
  • AMF access and mobility management function
  • a device having a communication function in a network/system may be referred to as a communication device.
  • the communication device may include a network device 110 and a terminal device 120 having a communication function.
  • the network device 110 and the terminal device 120 may be the specific devices described above and will not be described in detail here.
  • the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.
  • indication can be a direct indication, an indirect indication, or an indication of an association.
  • “A indicates B” can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.
  • corresponding may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.
  • the “configuration” in the embodiments of the present application may include configuration through at least one of system messages, radio resource control (RRC) signaling and media access control element (MAC CE).
  • RRC radio resource control
  • MAC CE media access control element
  • predefined may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device or a network device).
  • a device e.g., a terminal device or a network device.
  • predefined may refer to information defined in a protocol.
  • the "protocol” may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and this application does not limit this.
  • Random access process is essential for a terminal device to initially access a network. Random access can be categorized into two types: contention-based random access (CBRA) and contention-free random access (CFRA). The following describes the random access process in detail, using the LTE network as an example.
  • CBRA contention-based random access
  • CFRA contention-free random access
  • the random access process is mainly triggered by one or more of the following events: establishing a wireless connection when the terminal device initially accesses, such as when the terminal device changes from the RRC_IDLE state to the RRC_CONNECTED state; RRC connection reestablishment process: so that the terminal device can reestablish the wireless connection after the radio link fails; cell handover: the terminal device needs to establish uplink synchronization with the new cell;
  • RRC_CONNECTED In the RRC_CONNECTED state, DL (downlink) data arrives while the UL (uplink) is out of sync. In the RRC_CONNECTED state, UL data arrives while the UL is out of sync or there are no PUCCH resources available to send a scheduling request (SR). SR failure. Synchronization reconfiguration request from RRC.
  • the contention-based random access process may include the following steps:
  • Step S201 The terminal device sends message 1 (message1, Msg1) to the network device.
  • the terminal device can send Msg1 on the physical random access channel (PRACH), and Msg1 includes a random access preamble (random access preamble).
  • PRACH physical random access channel
  • the terminal device selects a preamble from the preset 64 preambles and determines a random access resource for sending the preamble.
  • the terminal device sends Msg1 including the preamble to the base station on the determined random access resource.
  • the network device can estimate the uplink timing and the grant size required for the terminal device to transmit Msg3.
  • Step S202 The network device sends message 2 (message2, Msg2) to the terminal device.
  • Msg2 can be called a random access response (RAR).
  • the terminal device After the terminal device sends Msg1, it opens a random access response time window (ra-ResponseWindow) and monitors the PDCCH scrambled with the random access radio access network temporary identifier (RA-RNTI) within this window.
  • ra-ResponseWindow a random access response time window
  • RA-RNTI random access radio access network temporary identifier
  • RA-RNTI 1 + t_id + 10 * f_id
  • t_id is the first subframe index of PRACH transmission (0 ⁇ t_id ⁇ 10)
  • f_id is the corresponding subframe of PRACH on this subframe.
  • Frequency domain index (0 ⁇ f_id ⁇ 6), where PRACH resources are numbered in ascending order in the frequency domain.
  • RA-RNTI For enhanced machine-type communication (eMTC), the RA-RNTI is calculated as follows:
  • RA-RNTI 1+t_id+10*f_id+60*(SFN_id mod(Wmax/10))
  • t_id is the first subframe index of the PRACH transmission (0 ⁇ t_id ⁇ 10)
  • f_id is the frequency domain index corresponding to the PRACH in that subframe (0 ⁇ f_id ⁇ 6)
  • PRACH resources are numbered sequentially in the frequency domain from low to high.
  • SFN_id is the first SFN index of the PRACH transmission
  • Wmax is the maximum PRACH window length supported by eMTC, which is 400 subframes.
  • RA-RNTI For narrowband internet of things (NB-IoT) UEs, the RA-RNTI is calculated as follows:
  • RA-RNTI 1+floor(SFN_id/4)+256*carrier_id
  • SFN_id is the first SFN index of the PRACH transmission
  • carrier_id is the UL carrier index corresponding to the PRACH transmission.
  • the carrier_id corresponding to the anchor carrier is 0.
  • the RA-RNTI is calculated as follows:
  • RA-RNTI 1+floor(SFN_id/4)+256*(H-SFN mod 2)
  • SFN_id is the first SFN index transmitted by PRACH
  • H-SFN is the first H-SFN transmitted by PRACH.
  • RA-RNTI is related to the PRACH time-frequency resources used by the UE to send Msg1.
  • a terminal After a terminal successfully receives the RA-RNTI-scrambled physical downlink control channel (PDCCH), it can obtain the physical downlink shared channel (PDSCH) scheduled by the PDCCH, which contains the random access response (RAR).
  • the RAR can contain multiple pieces of information.
  • the subheader of RAR may include a backoff indicator (BI), which can be used to indicate the backoff time for retransmitting MSG1; the random access preamble identification (RAPID) in RAR indicates the preamble index to which the network device responds; the payload in RAR may include a timing advance group (TAG), which can be used to adjust the uplink timing; RAR may also include an uplink grant (UL grant), which is used to indicate the uplink resources for scheduling MSG3; RAR may also include a cell-radio network temporary identifier (C-RNTI). For a terminal device that initially accesses, the terminal device can use the temporary C-RNTI to decode the PDCCH of MSG4.
  • BI backoff indicator
  • RAPID random access preamble identification
  • RAR indicates the preamble index to which the network device responds
  • the payload in RAR may include a timing advance group (TAG), which can be used to adjust the uplink timing
  • RAR may also include an uplink grant (UL
  • the terminal If the terminal receives a PDCCH scrambled with RA-RNTI and the RAR contains the preamble index sent by itself, the terminal considers that the random access response has been successfully received.
  • Step S203 The terminal device sends message 3 (message3, Msg3) to the network device.
  • Msg3 can also be called scheduled transmission.
  • Msg3 is primarily used to inform the network of the event that triggered the PRACH process. For example, if it is an initial access randomization process, the Msg3 will carry the terminal device identifier (UE ID) and the trigger establishment cause; if it is an RRC reestablishment process, it will carry the connected terminal device identifier and the trigger establishment cause.
  • UE ID terminal device identifier
  • RRC reestablishment process it will carry the connected terminal device identifier and the trigger establishment cause.
  • Step S204 The network device sends message 4 (Msg4) to the terminal device.
  • Msg4 can be called a contention resolution message.
  • Msg4 has two functions: one is for contention resolution, and the second is for the network to transmit RRC configuration messages to the terminal. There are two ways to resolve contention conflicts: one is that if the UE carries the C-RNTI in Msg3, Msg4 is scheduled using the PDCCH scrambled with the C-RNTI. The other is that if the UE does not carry the C-RNTI in Msg3, such as for initial access, Msg4 is scheduled using the PDCCH scrambled with the temporary cell-radio network temporary identifier (C-RNTI). The conflict is resolved by the UE receiving the PDSCH in Msg4 and matching the CCCH SDU in the PDSCH.
  • C-RNTI temporary cell-radio network temporary identifier
  • the process of non-contention-based random access may include the following steps:
  • Step S211 The network device sends random access preamble assignment information (RA preamble assignment) to the terminal device.
  • RA preamble assignment random access preamble assignment information
  • Step S212 The terminal device sends a random access preamble to the network device. This corresponds to step S201 in FIG2A , and will not be described in detail here.
  • PRACH resources and preamble may be specified by the network device.
  • Step S213 The network device sends a random access response to the terminal device, which corresponds to step S202 in FIG. 2A and will not be described in detail here.
  • the random access process ends after the terminal successfully receives Msg2.
  • the terminal successfully receives Msg2 it needs to continue to transmit Msg3 and receive Msg4.
  • the primary purpose of random access is to achieve uplink synchronization between the terminal device and the cell.
  • the network device determines the time when the terminal device transmits the preamble based on the PRACH time-frequency resources used to receive the preamble from the terminal device. Based on the preamble's transmission and reception times, the network device determines the terminal's initial timing advance (TA) and notifies the terminal device via the RAR.
  • TA initial timing advance
  • a terminal device in the RRC IDLE state if a terminal device in the RRC IDLE state has uplink data to transmit, it must first initiate an RRC connection through a random access process. Only after establishing an RRC connection with the network can it transmit data to the network.
  • 3GPP introduced the EDT mechanism in R15 for Narrow-Band Internet of Things (NB-IoT) and enhanced Machine-Type Communication (eMTC). This feature allows terminal devices in the RRC IDLE state to transmit uplink data through Msg3 during the random access process. After receiving a successful reception response from the base station, the random access process terminates, and the terminal device continues to remain in the RRC IDLE state without entering the RRC connected state.
  • NB-IoT Narrow-Band Internet of Things
  • eMTC enhanced Machine-Type Communication
  • the base station configures a separate NPRACH (narrowband physical random access channel) resource for EDT.
  • NPRACH narrowband physical random access channel
  • the EDT data transmission process is shown in Figure 3 and includes the following steps:
  • the terminal device (UE) sends a random access preamble to the base station (eNB);
  • eNB sends a random access response (Random Access Response) to the UE.
  • RRC connection resumption request RRC contention resume request
  • the RRC Connection resume request carries the resume ID, resume case, authentication token (shortResumeMAC-I) and uplink data (Uplink Data).
  • eNB sends a UE context resume request (Context resume request) to the Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • S305 modify the bearer between MME and serving gateway (S-GW).
  • MME sends a context resume response (Context resume response) to the UE.
  • S307 The UE sends uplink data to the S-GW.
  • the S-GW sends downlink data to the base station.
  • S309 The eNB and the MME perform a suspension process, and the bearer is modified between the MME and the S-GW.
  • eNB sends an RRC connection release notification (RRC contention release) to UE.
  • RRC contention release RRC contention release
  • RRC Connection Release carries the release case, resume ID, next-hop chaining count (NCC) and downlink data.
  • PUR Preconfigured uplink resources
  • the terminal device needs to verify the validity of the TA.
  • the judgment of the validity of the TA is based on one or more of the following conditions: whether the serving cell changes; whether the timing advance timer (TAT) times out; and changes in the reference signal receiving power (RSRP) of the terminal device.
  • TAT timing advance timer
  • RSRP reference signal receiving power
  • the network when the network configures the PUR for a terminal device, it may also configure a cyclic shift of the demodulation reference signal (DMRS).
  • DMRS demodulation reference signal
  • the first terminal device initiates the first process.
  • the first terminal device transmits message 3 without transmitting message 1 and/or receiving a random access response message, thereby helping to reduce signaling overhead.
  • the first process may refer to an EDT-related process. Unlike traditional EDT, the first process mentioned in the embodiment of the present application may not transmit message 1 and a random access response message. Therefore, the first process may be called PRACH-less EDT.
  • the first process may refer to a PUR-related process.
  • the preconfigured uplink resources used to transmit message 3 in the first process provided in the embodiment of the present application are contention-based (see the description below for details). Therefore, the first process may also be called contention-based preconfigured uplink resources (CB-PUR).
  • the process further includes: the first terminal device receives configuration information sent by the network device, the configuration information can be used to transmit message 3 and/or receive message 4, the configuration information includes public configuration information and/or first Exclusive configuration information of the terminal device.
  • public configuration information is sent to the first terminal device through a network device, so that the first terminal device and other terminal devices can share the public configuration information to transmit message 3 and/or receive message 4, thereby helping to improve the utilization rate of Msg3 uplink resources and/or Msg4 downlink resources, and further helping to improve system capacity.
  • the embodiments of the present application do not specifically limit the content of the public configuration information and the exclusive configuration information of the first terminal device, and may include any type of information that helps the terminal device transmit message 3 and/or receive message 4.
  • the contents of the public configuration information and the exclusive configuration information are described in detail below with examples.
  • the public configuration information may include one or more of the following information: first information, used to transmit message 3; second information, used to receive message 4; third information, used by the terminal device to determine the validity of the TA in the RRC non-connected state.
  • the first information may include one or more of the following: one or more first resource pools used to transmit message 3; a power control parameter of message 3.
  • the first resource pool (or each resource pool used to transmit Message 3) may include one or more of the following resources: time domain resources, frequency domain resources, and code domain resources.
  • the first resource pool may include time domain resources and frequency domain resources, and thus the first resource pool may also be referred to as the Msg3 time-frequency resource pool.
  • the first resource pool may include time domain resources, frequency domain resources, and code domain resources, and thus the first resource pool may also be referred to as the Msg3 time-frequency-code resource pool.
  • the first resource pool (or each resource pool used to transmit message 3) can correspond to a semi-persistent scheduling (SPS) configuration.
  • SPS semi-persistent scheduling
  • the first resource pool (or each resource pool used to transmit Message 3) is configured for one or more of: enhanced coverage level (CE level); carrier; subcarrier space; transmission block size of Message 3; and number of subcarriers (tone number) used for transmission of Message 3.
  • the first resource pool (or each resource pool used to transmit message 3) may be configured based on an enhanced coverage level.
  • the first resource pool (or each resource pool used to transmit message 3) may be configured based on a carrier.
  • the carrier-based configuration of the first resource pool (or each resource pool used to transmit message 3) may include one or more of the following: configuring the first resource pool for an anchor carrier; or configuring the first resource pool for a non-anchor carrier.
  • a Msg3 time-frequency resource pool or a Msg3 time-frequency code resource pool can be configured on the anchor carrier and/or non-anchor carrier, that is, each Msg3 time-frequency resource pool or Msg3 time-frequency code resource pool corresponds to an anchor carrier or a non-anchor carrier.
  • the first resource pool (or each resource pool used to transmit message 3) can be configured based on the transport block size (TBS) of message 3.
  • TBS transport block size
  • the configuration based on the transport block size of message 3 may include one of the following: the first resource pool (or each resource pool used to transmit message 3) corresponds to a transport block size of message 3; the first resource pool (or each resource pool used to transmit message 3) corresponds to a maximum value of the transport block size of message 3.
  • each Msg3 time-frequency resource pool or Msg3 time-frequency code resource pool corresponds to one Msg3TBS (i.e., the resource size or number is fixed, and the modulation and coding scheme (MCS) is fixed), and different Msg3 time-frequency resource pools or Msg3 time-frequency code resource pools can correspond to different Msg3TBSs.
  • MCS modulation and coding scheme
  • each Msg3 time-frequency resource pool or Msg3 time-frequency code resource pool corresponds to a maximum Msg3TBS (i.e., the resource size or number is fixed, and corresponds to a maximum MCS).
  • the first terminal device can adjust the actual Msg3TBS according to the number of bits to be transmitted, but the resource size or number remains unchanged, and the actual MCS is lower than the maximum MCS.
  • the first resource pool (or each resource pool used to transmit message 3) can be configured based on the number of subcarriers (single-tone or multi-tone) used for transmitting message 3.
  • a first resource pool (such as an Msg3 time-frequency resource pool or an Msg3 time-frequency code resource pool) is configured for single-tone and multi-tone, respectively. That is, each Msg3 time-frequency resource pool or Msg3 time-frequency code resource pool corresponding to a subcarrier spacing of 15 kHz corresponds to single-tone or multi-tone. It should be understood that if the Msg3 time-frequency resource pool or the Msg3 time-frequency code resource pool corresponds to multi-tone, then the Msg3 time-frequency resource pool or the Msg3 time-frequency code resource pool corresponds to one tone in multi-tone.
  • the second information includes one or more of the following: PDCCH configuration information, PDCCH used for scheduling Receipt of message 4; length of contention resolution timer.
  • the PDCCH configuration information can be configured for enhanced coverage levels. That is, each PDCCH configuration information corresponds to a CE level.
  • the duration of the contention resolution timer can be configured for the enhanced coverage level. That is, the duration of each contention resolution timer corresponds to a CE level.
  • the third information includes one or more of the following: the duration of the time alignment timer; the RSRP change threshold.
  • the RSRP change threshold can also be used to evaluate the effectiveness of the TA when the terminal device is in the RRC non-connected state.
  • the exclusive configuration information received by the first terminal device may be carried in the exclusive signaling of the first terminal device, which may be, for example, an RRC message (such as an RRC connection release message, an RRC early data completion message), MAC CE, PDCCH, etc.
  • RRC message such as an RRC connection release message, an RRC early data completion message
  • MAC CE such as an RRC CE
  • PDCCH Physical Downlink Control Channel
  • the above-mentioned exclusive configuration information includes one or more of the following: fourth information, used to indicate whether the first terminal device is allowed to initiate the first process in the RRC non-connected state; fifth information, used for the first terminal device to determine the validity of the TA in the RRC non-connected state; sixth information, used to indicate the corresponding carrier for the transmission of message 3 and/or the reception of message 4; seventh information, used to indicate the subcarrier spacing corresponding to the transmission of message 3; eighth information, used to indicate the number of subcarriers corresponding to the transmission of message 3; ninth information, used to indicate the power control parameters of message 3.
  • fourth information used to indicate whether the first terminal device is allowed to initiate the first process in the RRC non-connected state
  • fifth information used for the first terminal device to determine the validity of the TA in the RRC non-connected state
  • sixth information used to indicate the corresponding carrier for the transmission of message 3 and/or the reception of message 4
  • seventh information used to indicate the subcarrier spacing corresponding to the transmission of message 3
  • eighth information used
  • the fourth information may indicate explicitly or implicitly whether the first terminal device is allowed to initiate the first process in the RRC non-connected state.
  • the fourth information may include a first field (such as 1 bit) indicating whether the first terminal device is allowed to initiate the first process in the RRC non-connected state, such as 1 for allowing and 0 for not allowing.
  • the fourth information may include terminal device-specific configuration information related to the first process, implicitly indicating whether the first terminal device is allowed to initiate the first process in the RRC non-connected state.
  • the fifth information may include an RSRP change threshold, which can be used by the first terminal device to determine the validity of the TA in the RRC non-connected state.
  • the RSRP change threshold and the RSRP change threshold for the PUR can be the same configuration parameter or independent configuration parameters.
  • the RSRP change threshold can also be obtained through the above-mentioned public configuration information.
  • the sixth information can be used to indicate the carrier used by the first terminal device for transmission and/or reception after the first terminal device initiates the first process, that is, the carrier corresponding to the transmission of message 3 and/or the reception of message 4.
  • the transmission resources of message 3 are determined based on one or more of: configuration information of the network device; the capabilities of the first terminal device; the channel quality of the service cell of the first terminal device; the amount of data to be transmitted by the first terminal device; the coverage enhancement level of the first terminal device; the carrier corresponding to the transmission of message 3; the subcarrier spacing corresponding to the transmission of message 3; the number of subcarriers corresponding to the transmission of message 3; the transmission block size of message 3; and the maximum value of the transmission block size of message 3.
  • the first terminal device when the first terminal device receives the RRC connection release message or the RRC early data completion message for the last time, the first terminal device is at the first CE level, and the first terminal device uses the first CE level as the current (initial) CE level.
  • the first terminal device determines the (initial) CE level based on the RSRP measurement result of the current serving cell, where the RSRP threshold corresponding to each CE level is configured by the network.
  • the method for determining the CE level during the random access process in the related art can also be reused.
  • the carrier corresponding to the transmission of message 3 is determined based on a network device configuration, or based on a selection probability factor corresponding to one or more carriers.
  • the first terminal device may randomly select a carrier from multiple carriers based on a selection probability factor corresponding to one or more carriers.
  • the network device configures a selection probability factor alpha_i, and the first terminal device randomly selects a carrier from multiple carriers in the Msg3 transmission resource pool configured with the first procedure based on the selection probability factor.
  • i is a positive integer.
  • the network device may configure a selection probability factor alpha_anchor for the anchor carrier.
  • the probability of the first terminal device selecting the anchor carrier is alpha_anchor.
  • the probability of the first terminal device selecting each non-anchor carrier is the same, which is (1-alpha_anchor)/N, where N is the number of non-anchor carriers in the Msg3 transmission resource pool configured for the first process (such as RACH-less EDT or CB-PUR) for the CE level, and N is a positive integer.
  • alpha_anchor can reuse the selection probability factor used by the terminal device to select the carrier during the random access process in the related art, or it can be a selection probability factor introduced separately for RACH-less EDT or CB-PUR.
  • the subcarrier spacing corresponding to the transmission of message 3 is determined based on the network device configuration or based on the capabilities of the first terminal device.
  • the subcarrier spacing corresponding to the transmission of message 3 can be configured to the first terminal device by the network device through terminal device-specific signaling (such as RRC connection release message, RRC early data completion).
  • terminal device-specific signaling such as RRC connection release message, RRC early data completion.
  • the first terminal device may also select and determine the subcarrier spacing corresponding to the transmission of message 3 according to its own capabilities.
  • the number of subcarriers corresponding to the transmission of message 3 is determined based on the network device configuration or based on the capabilities of the first terminal device.
  • the number of subcarriers corresponding to the transmission of message 3 can be configured to the first terminal device by the network device through terminal device-specific signaling (such as RRC connection release message, RRC early data completion).
  • terminal device-specific signaling such as RRC connection release message, RRC early data completion.
  • the first terminal device may also select and determine the number of subcarriers corresponding to the transmission of message 3 according to its own capabilities.
  • the transport block size or the maximum transport block size of Message 3 is based on a network device configuration.
  • the transport block size of message 3 or the maximum transport block size may be configured by the network device to the first terminal device through terminal device-specific signaling (such as RRC connection release message, RRC early data completion).
  • terminal device-specific signaling such as RRC connection release message, RRC early data completion.
  • the first terminal device may select a (maximum) TBS that is not less than the current amount of data to be transmitted by the terminal device as the (maximum) Msg3TBS according to the current amount of data to be transmitted.
  • the first process mentioned above can be triggered by the terminal device actively or under certain conditions.
  • the following is a detailed description of possible triggering conditions of the first process.
  • the first process is triggered based on a first condition, and the first condition includes one or more of the following: the first terminal device receives an RRC connection establishment or RRC connection recovery request; the TA of the first terminal device is valid; the RSRP of the current cell of the first terminal device is greater than or equal to the first threshold; the current cell of the first terminal device belongs to the target cell that allows the first process.
  • the first terminal device currently has a valid TA, including whether the time alignment timer is running and/or whether the RSRP change of the first terminal device on the serving cell exceeds the threshold value configured by the network device.
  • the RSRP of the first terminal device in the current serving cell is greater than or equal to a first RSRP threshold.
  • the first RSRP threshold is configured by the network device, and the network device configures the first RSRP threshold for different CE levels.
  • the first RSRP threshold is different from the RSRP threshold used by the UE to determine the (initial) CE level. It should be understood that, for each CE level, the first RSRP threshold is greater than or equal to the RSRP threshold corresponding to the (initial) CE level.
  • the first terminal device initiates the first process (PRACH-less EDT or CB-PUR)
  • the first process PRACH-less EDT or CB-PUR
  • the first process can only be initiated (also called using the first process) on a target cell that meets the requirements.
  • the first terminal device can only use PRACH-less EDT or CB-PUR on the target cell of the terminal device-specific configuration related to the most recent reception of the first process (such as PRACH-less EDT or CB-PUR).
  • the first terminal device may use PRACH-less EDT or CB-PUR on any target cell that supports the first process (such as PRACH-less EDT or CB-PUR).
  • the network device when providing a first terminal device with a terminal-specific configuration related to PRACH-less EDT or CB-PUR, the network device also indicates whether the first terminal device is permitted to use PRACH-less EDT or CB-PUR in cells other than the current cell. It should be understood that, if permitted, the network device may also provide a list of cells permitted to use PRACH-less EDT or CB-PUR.
  • the first terminal device can confirm the transmission resources of Msg3 based on one or more confirmation methods of the Msg3 transmission resources mentioned above.
  • a first terminal device receives public configuration information related to a first process (PRACH-free EDT or CB-PUR) broadcast from a network device.
  • This public configuration information corresponds to the public configuration information described above and is not further described here.
  • step S520 the first terminal device performs a capability report.
  • the capability report includes reporting to the network device whether the UE has PRACH-free EDT or CB-PUR capabilities (this step is optional).
  • step S540 the first terminal device evaluates whether the PRACH-free EDT or CB-PUR triggering criteria are met in the RRC non-connected state (such as the RRC IDLE state).
  • step S550 the first terminal device selects the Msg3 resource and sends the Msg3 to the network device;
  • step S560 the first terminal device receives a confirmation/contention resolution response from the network device. It should be understood that the first terminal device may return to the RRC IDLE state or enter the RRC CONNECTED state according to the instructions of the network device.
  • step S520 and step S530 in FIG5 are optional.
  • FIG6 is a schematic diagram of the structure of a communication device according to an embodiment of the present application.
  • the communication device shown in FIG6 is a first terminal device, and the communication device 600 includes a processing unit 610.
  • the processing unit 610 is configured to initiate a first process; wherein, in the first process, the first terminal device transmits a message 3 without transmitting a message 1 and/or receiving a random access response message.
  • the communication device further includes: a receiving unit for receiving configuration information sent by a network device before the first terminal device initiates the first process, the configuration information being used to transmit message 3 and/or receive message 4, the configuration information including public configuration information and/or exclusive configuration information of the first terminal device.
  • the public configuration information includes one or more of the following information: first information, used to transmit message 3; second information, used to receive message 4; and third information, used by the terminal device to determine the validity of the timing advance TA in the non-connected state of the radio resource control RRC.
  • the first information includes one or more of the following: one or more first resource pools for transmitting message 3; and a power control parameter of message 3.
  • the first resource pool is configured for one or more of: enhanced coverage level; carrier; subcarrier spacing; transport block size of message 3; and number of subcarriers used for message 3 transmission.
  • the first resource pool is configured for a carrier, including one or more of the following: the first resource pool is configured for an anchor carrier; the first resource pool is configured for a non-anchor carrier.
  • the first resource pool is configured for the transmission block size of message 3, including one of the following: the first resource pool corresponds to a transmission block size of message 3; the first resource pool corresponds to a maximum value of the transmission block size of message 3.
  • the second information includes one or more of the following: configuration information of a physical downlink control channel PDCCH, where the PDCCH is used to schedule reception of message 4; and a duration of a contention resolution timer.
  • the configuration information of the PDCCH is configured for the enhanced coverage level; and/or the duration of the contention resolution timer is configured for the enhanced coverage level.
  • the exclusive configuration information includes one or more of the following: fourth information, used to indicate whether the first terminal device is allowed to initiate the first process in the RRC non-connected state; fifth information, used for the first terminal device to determine the validity of the TA in the RRC non-connected state; sixth information, used to indicate the corresponding carrier for the transmission of message 3 and/or the reception of message 4; seventh information, used to indicate the subcarrier spacing corresponding to the transmission of message 3; eighth information, used to indicate the number of subcarriers corresponding to the transmission of message 3; and ninth information, used to indicate the power control parameters of message 3.
  • fourth information used to indicate whether the first terminal device is allowed to initiate the first process in the RRC non-connected state
  • fifth information used for the first terminal device to determine the validity of the TA in the RRC non-connected state
  • sixth information used to indicate the corresponding carrier for the transmission of message 3 and/or the reception of message 4
  • seventh information used to indicate the subcarrier spacing corresponding to the transmission of message 3
  • eighth information used to indicate the number of
  • the fifth information includes one or more of the following: a duration of a time alignment timer; and a RSRP change threshold.
  • the transmission resources of the message 3 are determined based on one or more of the following: configuration information of the network device; the capabilities of the first terminal device; the channel quality of the service cell of the first terminal device; the amount of data to be transmitted by the first terminal device; the coverage enhancement level of the first terminal device; the carrier corresponding to the transmission of the message 3; the subcarrier spacing corresponding to the transmission of the message 3; the number of subcarriers corresponding to the transmission of the message 3; the transmission block size of the message 3; and the maximum value of the transmission block size of the message 3.
  • the coverage enhancement level of the first terminal device is determined based on one or more of the following: the coverage enhancement level of the first terminal device when it last received an RRC connection release message or an RRC early data completion message; and the measurement result of the RSRP of the first terminal device on the serving cell.
  • the carrier corresponding to the transmission of the message 3 is determined based on a network device configuration, or based on a selection probability factor corresponding to one or more carriers.
  • the one or more carriers have respective corresponding selection probability factors; or an anchor carrier among the one or more carriers corresponds to a first selection probability factor, and each non-anchor carrier among the one or more carriers corresponds to a second selection probability factor, and the first selection probability factor is different from the second selection probability factor.
  • the subcarrier spacing corresponding to the transmission of the message 3 is determined based on the network device configuration or based on the capabilities of the first terminal device.
  • the transmission block size or the maximum transmission block size of the message 3 is based on the network device configuration; or, the transmission block size or the maximum transmission block size of the message 3 is determined by the amount of data to be transmitted by the first terminal device.
  • the first process is triggered based on a first condition, and the first condition includes one or more of the following: the first terminal device receives an RRC connection establishment or RRC connection recovery request; the TA of the first terminal device is valid; the RSRP of the current cell of the first terminal device is greater than or equal to a first threshold; the current cell of the first terminal device belongs to the target cell that allows the first process.
  • the target cell satisfies one of the following: the target cell is the cell where the first terminal device is located when receiving the exclusive configuration information; the target cell is a cell that supports the first process; the target cell is the cell indicated when the network device sends the exclusive configuration information to the first terminal device; wherein the exclusive configuration information is used to configure the first process.
  • FIG7 is a schematic diagram of the structure of a communication device according to an embodiment of the present application.
  • the communication device shown in FIG7 is a network device, and the communication device 700 includes a receiving unit 710.
  • the receiving unit 710 is configured to receive a message 3 sent by a first terminal device through a first process; wherein, in the first process, the first terminal device transmits the message 3 without transmitting the message 1 and/or receiving the random access response message.
  • the communication device further includes: a sending unit for sending configuration information to the first terminal device before the network device receives a message 3 sent by the first terminal device through a first process, the configuration information being used to transmit message 3 and/or receive message 4, the configuration information including public configuration information and/or exclusive configuration information of the first terminal device.
  • the first information includes one or more of the following: one or more first resource pools for transmitting message 3; and a power control parameter of message 3.
  • the first resource pool is configured for one or more of: enhanced coverage level; carrier; subcarrier spacing; transport block size of message 3; and number of subcarriers used for message 3 transmission.
  • the first resource pool is configured for a carrier, including one or more of the following: the first resource pool is configured for an anchor carrier; the first resource pool is configured for a non-anchor carrier.
  • the first resource pool is configured for the transmission block size of message 3, including one of the following: the first resource pool corresponds to a transmission block size of message 3; the first resource pool corresponds to a maximum value of the transmission block size of message 3.
  • the second information includes one or more of the following: configuration information of a physical downlink control channel PDCCH, where the PDCCH is used to schedule reception of message 4; and a duration of a contention resolution timer.
  • the third information includes one or more of the following: a duration of a time alignment timer; and a change threshold of a reference signal received power RSRP.
  • the exclusive configuration information includes one or more of the following: fourth information, used to indicate whether the first terminal device is allowed to initiate the first process in the RRC non-connected state; fifth information, used for the first terminal device to determine the validity of the TA in the RRC non-connected state; sixth information, used to indicate the corresponding carrier for the transmission of message 3 and/or the reception of message 4; seventh information, used to indicate the subcarrier spacing corresponding to the transmission of message 3; eighth information, used to indicate the number of subcarriers corresponding to the transmission of message 3; and ninth information, used to indicate the power control parameters of message 3.
  • fourth information used to indicate whether the first terminal device is allowed to initiate the first process in the RRC non-connected state
  • fifth information used for the first terminal device to determine the validity of the TA in the RRC non-connected state
  • sixth information used to indicate the corresponding carrier for the transmission of message 3 and/or the reception of message 4
  • seventh information used to indicate the subcarrier spacing corresponding to the transmission of message 3
  • eighth information used to indicate the number of
  • the fifth information includes one or more of the following: a duration of a time alignment timer; and a RSRP change threshold.
  • the transmission resources of the message 3 are determined based on one or more of the following: configuration information of the network device; the capabilities of the first terminal device; the channel quality of the service cell of the first terminal device; the amount of data to be transmitted by the first terminal device; the coverage enhancement level of the first terminal device; the carrier corresponding to the transmission of the message 3; the subcarrier spacing corresponding to the transmission of the message 3; the number of subcarriers corresponding to the transmission of the message 3; the transmission block size of the message 3; and the maximum value of the transmission block size of the message 3.
  • the coverage enhancement level of the first terminal device is determined based on one or more of the following: the coverage enhancement level of the first terminal device when it last received an RRC connection release message or an RRC early data completion message; and the measurement result of the RSRP of the first terminal device on the serving cell.
  • the carrier corresponding to the transmission of the message 3 is determined based on a network device configuration, or based on a selection probability factor corresponding to one or more carriers.
  • the one or more carriers have respective corresponding selection probability factors; or an anchor carrier among the one or more carriers corresponds to a first selection probability factor, and each non-anchor carrier among the one or more carriers corresponds to a second selection probability factor, and the first selection probability factor is different from the second selection probability factor.
  • the subcarrier spacing corresponding to the transmission of the message 3 is determined based on the network device configuration or based on the capabilities of the first terminal device.
  • the transmission block size or the maximum transmission block size of the message 3 is based on the network device configuration; or, the transmission block size or the maximum transmission block size of the message 3 is determined by the amount of data to be transmitted by the first terminal device.
  • the first process is triggered based on a first condition, and the first condition includes one or more of the following: the first terminal device receives an RRC connection establishment or RRC connection recovery request; the TA of the first terminal device is valid; the RSRP of the current cell of the first terminal device is greater than or equal to a first threshold; the current cell of the first terminal device belongs to the target cell that allows the first process.
  • the target cell satisfies one of the following: the target cell is the cell where the first terminal device is located when receiving the exclusive configuration information; the target cell is a cell that supports the first process; the target cell is the cell indicated when the network device sends the exclusive configuration information to the first terminal device; wherein the exclusive configuration information is used to configure the first process.
  • FIG8 is a schematic block diagram of a communication device to which embodiments of the present application may be applied.
  • the dashed lines in FIG8 indicate that the unit or module is optional.
  • the device 800 may be used to implement the method described in the above method embodiment.
  • the device 800 may be a chip or a communication device.
  • the device 800 may include one or more processors 810.
  • the processor 810 may support the device 800 to implement the method described in the above method embodiment.
  • the processor 810 may be a general-purpose processor or a special-purpose processor.
  • the processor may be a central processing unit (CPU).
  • the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the apparatus 800 may further include one or more memories 820.
  • the memories 820 store programs that can be executed by the processor 810, causing the processor 810 to perform the methods described in the above method embodiments.
  • the memories 820 may be independent of the processor 810 or integrated into the processor 810.
  • the apparatus 800 may further include a transceiver 830.
  • the processor 810 may communicate with other devices or chips via the transceiver 830.
  • the processor 810 may transmit and receive data with other devices or chips via the transceiver 830.
  • B corresponding to A means that B is associated with A and B can be determined based on A.
  • determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and/or other information.
  • the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.
  • pre-definition or “pre-configuration” may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device).
  • a device e.g., a terminal device and a network device.
  • pre-definition may refer to information defined in a protocol.
  • the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.
  • the term "and/or” is simply a description of the association relationship between related objects, indicating that three relationships can exist.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this document generally indicates that the related objects are in an "or” relationship.
  • the size of the serial numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are merely schematic.
  • the division of the units is merely a logical function division.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.

Landscapes

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

Abstract

La présente demande propose un procédé de communication sans fil et un dispositif de communication. Le procédé de communication sans fil comprend les étapes suivantes : un premier dispositif terminal lance un premier processus, dans le premier processus, le premier dispositif terminal transmettant un message 3 sans transmettre un message 1 et/ou recevant un message de réponse d'accès aléatoire.
PCT/CN2024/078116 2024-02-22 2024-02-22 Procédé de communication sans fil et dispositif de communication Pending WO2025175520A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2024/078116 WO2025175520A1 (fr) 2024-02-22 2024-02-22 Procédé de communication sans fil et dispositif de communication
PCT/CN2024/090457 WO2025175638A1 (fr) 2024-02-22 2024-04-28 Procédé de communication sans fil et dispositif de communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/078116 WO2025175520A1 (fr) 2024-02-22 2024-02-22 Procédé de communication sans fil et dispositif de communication

Publications (1)

Publication Number Publication Date
WO2025175520A1 true WO2025175520A1 (fr) 2025-08-28

Family

ID=96846203

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/CN2024/078116 Pending WO2025175520A1 (fr) 2024-02-22 2024-02-22 Procédé de communication sans fil et dispositif de communication
PCT/CN2024/090457 Pending WO2025175638A1 (fr) 2024-02-22 2024-04-28 Procédé de communication sans fil et dispositif de communication

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/090457 Pending WO2025175638A1 (fr) 2024-02-22 2024-04-28 Procédé de communication sans fil et dispositif de communication

Country Status (1)

Country Link
WO (2) WO2025175520A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020067818A1 (fr) * 2018-09-27 2020-04-02 엘지전자 주식회사 Procédé et appareil pour la transmission ou la réception de données ul sur une pur en mode veille dans un système de communication sans fil
CN112153750A (zh) * 2019-06-28 2020-12-29 华为技术有限公司 一种随机接入的方法及通信装置
KR20220124026A (ko) * 2021-03-02 2022-09-13 한국전자통신연구원 통신 시스템에서 데이터의 예약 전송 방법 및 장치
CN117223318A (zh) * 2023-08-02 2023-12-12 北京小米移动软件有限公司 用于配置定时器的方法及装置、存储介质

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019192022A1 (fr) * 2018-04-06 2019-10-10 Oppo广东移动通信有限公司 Procédé de communication sans fil, terminal et dispositif de réseau
CN110536472B (zh) * 2019-08-08 2025-02-28 中兴通讯股份有限公司 一种数据传输方法、装置及计算机可读存储介质
CN116471687A (zh) * 2022-01-11 2023-07-21 华为技术有限公司 一种传输数据的方法和装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020067818A1 (fr) * 2018-09-27 2020-04-02 엘지전자 주식회사 Procédé et appareil pour la transmission ou la réception de données ul sur une pur en mode veille dans un système de communication sans fil
CN112153750A (zh) * 2019-06-28 2020-12-29 华为技术有限公司 一种随机接入的方法及通信装置
KR20220124026A (ko) * 2021-03-02 2022-09-13 한국전자통신연구원 통신 시스템에서 데이터의 예약 전송 방법 및 장치
CN117223318A (zh) * 2023-08-02 2023-12-12 北京小米移动软件有限公司 用于配置定时器的方法及装置、存储介质

Also Published As

Publication number Publication date
WO2025175638A1 (fr) 2025-08-28

Similar Documents

Publication Publication Date Title
CN116074970B (zh) 无线通信的方法及装置
CN116458251B (zh) 随机接入方法和终端设备
WO2022067779A1 (fr) Procédé de traitement d'informations de découpage réseau, dispositif terminal et dispositif réseau
WO2015064419A1 (fr) Procédé de commande de communication, station de base et terminal utilisateur
US11617209B2 (en) Timer control in early data transmission
WO2023004619A1 (fr) Procédé de transmission d'informations, dispositif, et support de stockage
US20250193927A1 (en) Communication control method and user equipment
CN116647932A (zh) 物理上行控制信道传输的方法、终端设备和网络设备
WO2022247578A1 (fr) Procédé de transmission de données et appareil de communication
JP2018046586A (ja) 装置及び方法
CN118158831A (zh) 随机接入方法和装置
CN116803141A (zh) 无线通信的方法、终端设备和网络设备
WO2022067614A1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif de réseau
CN115669186A (zh) 无线通信方法、终端设备和网络设备
CN111246591A (zh) 一种信息传输方法、装置及相关设备
WO2025175520A1 (fr) Procédé de communication sans fil et dispositif de communication
CN112825584B (zh) 一种空闲态终端设备检测方法以及相关设备
CN117413547A (zh) 信息指示方法、终端设备、网络设备、芯片和存储介质
EP4651614A1 (fr) Procédé et appareil de communication sans fil
RU2791244C1 (ru) Способ и устройство произвольного доступа
CN115669166B (zh) 检测控制信息的方法、传输控制信息的方法、终端设备和网络设备
WO2025199964A1 (fr) Procédé et appareil d'envoi d'informations, procédé et appareil de réception d'informations, terminal, dispositif de réseau et support de stockage
WO2025118111A1 (fr) Procédés et appareils de communication sans fil
WO2024148452A1 (fr) Procédé de communication sans fil et dispositif terminal
WO2024098212A1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif réseau

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24925272

Country of ref document: EP

Kind code of ref document: A1