WO2021207902A1 - Procédé et appareil de transmission de données - Google Patents

Procédé et appareil de transmission de données Download PDF

Info

Publication number
WO2021207902A1
WO2021207902A1 PCT/CN2020/084563 CN2020084563W WO2021207902A1 WO 2021207902 A1 WO2021207902 A1 WO 2021207902A1 CN 2020084563 W CN2020084563 W CN 2020084563W WO 2021207902 A1 WO2021207902 A1 WO 2021207902A1
Authority
WO
WIPO (PCT)
Prior art keywords
data transmission
transmission mode
data
random access
terminal device
Prior art date
Application number
PCT/CN2020/084563
Other languages
English (en)
Chinese (zh)
Inventor
林雪
石聪
李海涛
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/084563 priority Critical patent/WO2021207902A1/fr
Priority to CN202080097263.2A priority patent/CN115136645A/zh
Publication of WO2021207902A1 publication Critical patent/WO2021207902A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications

Definitions

  • This application relates to the field of communication technology, and in particular to a data transmission method and device.
  • the unlimited resource control (radio resource control, referred to as RRC) state of the terminal equipment includes three types, namely the idle state, the inactive state and the connected (connected) state. )state.
  • the inactive state is a state introduced by the 5G system from the perspective of energy saving.
  • the terminal device in the inactive state its radio bearer and all radio resources will be released, but the terminal device side and the network device side retain the terminal device access context , In order to quickly restore the RRC connection.
  • network devices usually keep terminal devices with infrequent data transmissions in an inactive state, while terminal devices that are currently in an inactive state do not support data transmission.
  • the terminal device needs to restore the RRC connection with the network device, switch from the inactive state to the connected state, and release to the inactive state after the data transmission is completed.
  • it is necessary to switch between the connected state and the inactive state each time the data is transmitted, which results in unnecessary power consumption and signaling overhead.
  • the embodiments of the present application provide a data transmission method and device to reduce power consumption and signaling overhead when a terminal device transmits uplink data.
  • an embodiment of the present application provides a data transmission method, which is applied to a terminal device, and includes:
  • uplink data is sent to the network device.
  • an embodiment of the present application provides a data transmission method, which is applied to a network device, and includes:
  • the uplink data sent by the terminal device is received, wherein the first data transmission mode is the data transmission mode supported by the terminal device through the network device when the terminal device is in the inactive state and The data transmission mode supported when the terminal device is in the inactive state is determined.
  • an embodiment of the present application provides a data transmission device, which is applied to a terminal device, and includes:
  • the selection module is configured to determine the first data transmission mode according to the data transmission mode supported by the network device and the data transmission mode supported by the terminal device when the terminal device is in the inactive state;
  • the sending module is configured to send uplink data to the network device according to the first data transmission mode.
  • an embodiment of the present application provides a data transmission device, which is applied to a network device, and includes:
  • the receiving module is configured to receive the uplink data sent by the terminal device according to the first data transmission mode, where the first data transmission mode is that the terminal device supports the terminal device through the network device when the terminal device is in an inactive state
  • the data transmission mode and the data transmission mode supported when the terminal device is in the inactive state are determined.
  • an embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
  • the memory stores computer execution instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the data transmission method according to any one of the first aspect.
  • an embodiment of the present application provides a network device, including: a transceiver, a processor, and a memory;
  • the memory stores computer execution instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the data transmission method according to any one of the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium having computer-executable instructions stored in the computer-readable storage medium.
  • the computer-executable instructions are executed by a processor, the The data transmission method described in one item.
  • an embodiment of the present application provides a computer-readable storage medium having computer-executable instructions stored in the computer-readable storage medium.
  • the computer-executable instructions are executed by a processor, the The data transmission method described in one item.
  • the first data transmission method is determined according to the data transmission method supported by the network device and the data transmission method supported by the terminal device when the terminal device is in the inactive state, and then the terminal device determines the first data transmission method according to the first data transmission method.
  • Data transmission method sending uplink data to network equipment.
  • the determined first data transmission method may be the data transmission method when the terminal device is in the inactive state, or may be the data transmission method based on the connected state.
  • the transmission of uplink data can be completed when the terminal device is in the inactive state, without switching between the connected state and the inactive state, thereby reducing the connection between the terminal device and the network settings.
  • the signalling overhead of the power consumption is the terminal device
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application
  • Figure 2 is a schematic diagram of a PUR configuration provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of PUR data transmission under the EPS cellular Internet of Things provided by an embodiment of the application;
  • Fig. 5 is a schematic diagram of EDT provided by an embodiment of the application.
  • FIG. 6 is a schematic flowchart of a data transmission method provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram 1 of the first data transmission mode selection provided by an embodiment of this application.
  • FIG. 8 is a second schematic diagram of the selection of the first data transmission mode provided by an embodiment of the application.
  • FIG. 9 is a third schematic diagram of selection of the first data transmission mode provided by an embodiment of the application.
  • FIG. 10 is a fourth schematic diagram of the selection of the first data transmission mode provided by an embodiment of this application.
  • FIG. 11 is a schematic diagram of a four-step random access process provided by an embodiment of this application.
  • FIG. 12 is a schematic diagram of a two-step random access process provided by an embodiment of this application.
  • FIG. 13 is a fifth schematic diagram of the first data transmission mode selection provided by an embodiment of the application.
  • FIG. 14 is a sixth schematic diagram of the selection of the first data transmission mode provided by an embodiment of the application.
  • FIG. 15 is a seventh schematic diagram of the selection of the first data transmission mode provided by an embodiment of this application.
  • FIG. 16 is an eighth schematic diagram of the first data transmission mode selection provided by an embodiment of this application.
  • FIG. 17a is a schematic diagram 1 of determining a data transmission mode for random access according to an embodiment of the application
  • FIG. 17b is a second schematic diagram of determining a data transmission mode for random access according to an embodiment of the application.
  • FIG. 18 is a schematic structural diagram of a data transmission device provided by an embodiment of the application.
  • FIG. 19 is a schematic structural diagram of a data transmission device provided by an embodiment of the application.
  • FIG. 20 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • FIG. 21 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • Terminal equipment usually has a wireless transceiver function, terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water (such as ships, etc.); can also be deployed in the air (such as airplanes, balloons, etc.) And satellite class).
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self-driving (self-driving), wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, Wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, wearable terminal equipment, etc.
  • VR virtual reality
  • AR augmented reality
  • the terminal equipment involved in the embodiments of the present application may also be referred to as a terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station , Remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc.
  • the terminal device can also be fixed or mobile.
  • Network equipment usually has a wireless transceiver function, the network equipment may have mobile characteristics, for example, the network equipment may be a mobile device.
  • the network equipment can 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, or a high elliptical orbit (High Elliptical Orbit, HEO). ) Satellite etc.
  • LEO low earth orbit
  • MEO medium earth orbit
  • GEO geostationary earth orbit
  • HEO high elliptical orbit
  • the orbital height range of LEO satellites is usually 500km to 1500km, and the orbital period (the period of rotation around the earth) is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is about 20ms.
  • the single-hop communication delay between users refers to the transmission delay between the terminal device and the network device, or the delay between the network device and the transmission device.
  • the maximum visible time of the satellite is about 20 minutes.
  • the maximum visible time refers to the longest time that the beam of the satellite covers a certain area of the ground.
  • LEO satellites move relative to the ground. As the satellite moves, the ground area covered by it is also Changing.
  • the signal propagation distance of the LEO satellite is short, the link loss is small, and the requirement for the transmission power of the terminal equipment is not high.
  • the orbital height of GEO satellites is usually 35786km, and the orbital period is 24 hours.
  • the signal propagation delay of single-hop communication between users is about 250ms.
  • satellites can use multiple beams to cover the ground.
  • a satellite can form dozens or hundreds of beams to cover the ground, and one beam can cover dozens to hundreds of kilometers in diameter.
  • Ground area can also be a base station set up in land, water, etc., for example, the network equipment can be a next generation NodeB (gNB) or a next generation-evolved NodeB (ng-eNB) .
  • gNB provides UE with new radio (NR) user plane functions and control plane functions
  • ng-eNB provides UE with evolved universal terrestrial radio access (E-UTRA) user plane Functions and control plane functions.
  • NR new radio
  • E-UTRA evolved universal terrestrial radio access
  • the network equipment can also be a base transceiver station (BTS) in a GSM system or a CDMA system, a base station (nodeB, NB) in a WCDMA system, or an evolutional node B (evolutional node B) in an LTE system. eNB or eNodeB).
  • BTS base transceiver station
  • nodeB, NB base station
  • evolutional node B evolutional node B
  • the network equipment may also be relay stations, access points, in-vehicle equipment, wearable equipment, and network side equipment in the network after 5G or network equipment in the future evolved PLMN network, road site unit (RSU) )Wait.
  • RSU road site unit
  • RRC status Terminal equipment and network equipment communicate with each other through wireless channels and exchange information with each other. Therefore, a control mechanism is needed between terminal equipment and network equipment to exchange information and reach agreement.
  • This control mechanism is RRC.
  • the RRC state includes the RRC idle state and the RRC connected state.
  • the RRC inactive state is also introduced. In the RRC inactive state, the terminal device and the network device are in a non-connected state, but the context of the terminal device is still partially retained. At the same time, in the RRC inactive state, the terminal device can quickly switch to the RRC connected state through paging messages, etc. .
  • Random access refers to the process before the terminal device transmits a random access preamble to establish a basic signaling connection with the network device, and refers to the process in which the terminal device establishes a wireless link with the network device to obtain or restore uplink synchronization. Random access is a key step in a mobile communication system, making it possible for terminal equipment and network equipment to establish a communication connection. Terminal equipment exchanges information with network equipment through random access, and can also achieve uplink synchronization through random access. In the actual application process, the terminal device can initiate random access in a variety of possible scenarios.
  • the multiple possible scenarios can include at least one of the following scenarios: (1) The state of the terminal device is controlled from the radio resource ( Radio resource control, RRC) After the idle state is switched to the RRC connected state, the terminal device initiates random access during the process of establishing a wireless link with the network device. (2) After the wireless link between the terminal device and the network device fails, the terminal device and the network device initiate random access when the RRC connection is re-established. (3) When a terminal device needs to establish uplink synchronization with a new cell, it initiates random access. (4) When the terminal device is in the RRC connected state and the uplink is not synchronized, if uplink or downlink data arrives, random access is initiated.
  • RRC Radio resource control
  • Random access is initiated when the terminal device is in the RRC connected state but has not yet been configured with dedicated resources for sending scheduling requests on the physical uplink control channel (PUCCH).
  • PUCCH physical uplink control channel
  • Random access is initiated when the scheduling request fails.
  • Random access is initiated when RRC requests during synchronous reconfiguration.
  • Random access is initiated when the state of the terminal device switches from the RRC inactive state to the RRC connected state.
  • Random access is initiated when time alignment is established when adding a second cell.
  • Random access is initiated when requesting other system information except for the master information block (MIB) and system information block (SIB).
  • MIB master information block
  • SIB system information block
  • Preamble is a series of sequences sent by terminal equipment to apply for access to the network, including but not limited to gold sequence, m sequence, ZC sequence, etc.
  • the composition of the preamble may also include a cyclic prefix and guard time.
  • RSRP reference signal receiving power, reference signal receiving power.
  • the data transmission methods involved in the embodiments of this application mainly include three types, namely, a data transmission method based on pre-configured resources, a data transmission method based on random access, and a data transmission method based on a connection state.
  • Both the data transmission method based on pre-configured resources and the data transmission method based on random access are the data transmission methods of the terminal device in the inactive state, and the data transmission method based on the pre-configured resource is pre-allocated for the terminal device according to the network device
  • Pre-configured resources are used to complete uplink data transmission.
  • the random access-based data transmission method is a method for terminal equipment to complete uplink data transmission through information exchange during the process of establishing a connection with the network device through random access.
  • the data transmission method based on the connected state is a data transmission method after the terminal device establishes a connection with the network device. For example, after the terminal device establishes a connection with the network device through random access, the terminal device performs uplink data transmission when the terminal device is in the connected state.
  • Suspend state In the suspended state, the context of the terminal device in the suspend state is stored in the RAN and the UE, so that the UE can quickly switch to the connected state.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application.
  • the network including the network device 101 and the terminal device 102 can also be called a non-terrestrial communication network (Non-Terrestrial Network, NTN), where NTN refers to the communication between the terminal device and the satellite (also called the network device) The internet.
  • NTN non-terrestrial communication network
  • NR New Radio
  • NR refers to a new generation of wireless access network technology, which can be applied to future evolution networks, such as the fifth generation of the future.
  • 5G the 5th Generation Mobile Communication
  • the solutions in the embodiments of this application can also be applied to other wireless communication networks such as Wireless Fidelity (WIFI) and Long Term Evolution (LTE), and the corresponding names can also be used in other wireless communication networks. The name of the function is substituted.
  • WIFI Wireless Fidelity
  • LTE Long Term Evolution
  • FIG. 2 is a schematic diagram of the PUR configuration provided by an embodiment of the application, as shown in Figure 2, including:
  • the UE sends a PUR configuration request (PURConfigurationRequest) to the ng-eNB.
  • PURConfigurationRequest PURConfigurationRequest
  • the UE can send a PUR configuration request to the ng-eNB in the connected state, thereby requesting PUR from the ng-eNB.
  • the PUR configuration request can optionally include the requested PUR period, TBS, PUR The number, etc., may not include the above information.
  • the ng-eNB can allocate PUR to the UE.
  • the ng-eNB sends an RRC connection release (RRCConnectionRelease) message to the UE.
  • RRC connection release RRCConnectionRelease
  • the ng-eNB configures the PUR for the UE by including the PUR configuration (PUR-Configuration) field in the RRC connection release information message, and releases the UE to the idle state at the same time.
  • the PUR configuration is determined by the ng-eNB, which may be based on the UE's request, UE registration information and/or local policy, or may be based on the ng-eNB's own capabilities.
  • the UE in the idle state needs to meet the following prerequisites before using PUR for data transmission:
  • TA timing advance
  • the first condition is that the TA timer (TA timer) does not expire.
  • the media access control (MAC) layer starts the TA timer after receiving the instruction from the higher layer.
  • the higher layer determines the validity of the TA, it can confirm to the MAC layer whether the TA timer is in the running period.
  • the MAC layer needs to feed back to the upper layer.
  • the second condition is that the change (increase or decrease) of RSRP is less than or equal to the set threshold. If the change of RSRP is greater than the set threshold, the TA is considered invalid.
  • NCC NextHopChainingCount
  • NCC is included in the RRC connection release message. It is a parameter related to the integrity protection and encryption of RRC. It is used for the derivation of a new key. When the UE is switching and reconnecting, A new key needs to be calculated by the NCC to perform encryption operations.
  • Effective PUR can be considered to be the PUR that meets the transmission requirements of the UE's uplink data.
  • the effectiveness of the PUR can be comprehensively judged from several aspects such as the PUR cycle, TBS, and the number of PURs.
  • the UE in the idle state can use PUR for data transmission.
  • Fig. 3 is a schematic diagram of PUR data transmission under the EPS cellular Internet of Things provided by an embodiment of the application, as shown in Fig. 3, including:
  • the UE sends an RRC connection recovery request message (RRCConnectionResumeRequest) to the eNB.
  • RRCConnectionResumeRequest an RRC connection recovery request message
  • the UE sends an RRC connection recovery request message to the eNB, including Resume ID/I-RNTI, RRC establishment cause, shortResumeMAC-I, where the Resume ID/IRNTI is used by the eNB to identify the context of the UE in the suspended state, shortResumeMAC-I Used for authentication.
  • the UE recovers all unlimited resource bearer (signaling radio bearer, SRB) and data radio bearer (DRB), and uses the NCC contained in the last connected RRC connection release message to derive a new key, and user data is in a dedicated transmission channel Encryption and transmission on the dedicated transmission channel (DTCH), and multiplexed with the RRC connection recovery request on the common control channel (CCCH).
  • SRB signal radio bearer
  • DRB data radio bearer
  • S32-S37 is the MO-EDT (mobile-originating EDT) transmission process under the EPS cellular IoT user plane function optimization scheme, including eNB, mobility management entity (mobility management entity, MME), and service The interaction between gateways (Serving GateWay, S-GW), etc., will not be described in detail here.
  • MO-EDT mobile-originating EDT
  • MME mobility management entity
  • S-GW Serving GateWay
  • the eNB sends an RRC connection release message to the UE.
  • the eNB After the eNB submits the user data to the core network, it keeps the UE in the idle state through the RRC connection release information message.
  • the RRC connection release information contains the following information: a) RRC release cause (releaseCause) is set to RRC-suspend; b) resume ID /I-RNTI; c) NCC; d) DRB-ContinueROHC. If the network device has downlink data to send, it is encrypted and transmitted through DTCH, and multiplexed with the RRC connection release message on the DCCH.
  • Fig. 4 is a schematic diagram of PUR data transmission under the 5GS cellular Internet of Things provided by an embodiment of the application, as shown in Fig. 4, including:
  • S41 The UE sends an RRC connection recovery request message to the eNB.
  • S42-S47 is the MO-EDT transmission process under the 5GS cellular IoT user plane function optimization solution, including ng-eNB, access and mobility management entity (Access and Mobility Management Function, AMF), session management function entity (Session The interaction between Management Function (SMF)/User Plane Function (UPF), etc., will not be described in detail here.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • the ng-eNB sends an RRC connection release message to the UE.
  • the PUR data transmission mode illustrated in FIG. 4 is similar to the PUR data transmission mode illustrated in FIG.
  • FIGS 2 to 4 illustrate one way of data transmission in LTE, that is, the PUR-based data transmission method.
  • the following will introduce another data transmission method in LTE, early data transmission (EDT).
  • EDT early data transmission
  • FIG. 5 is a schematic diagram of EDT provided by an embodiment of the application. As shown in Figure 5, the UE selects one of the preamble groups used to indicate EDT and sends it to the eNB to initiate the EDT transmission process. After receiving the corresponding preamble, the eNB passes RAR configures uplink resources and TA for EDT for UE, and the method includes:
  • the UE sends an RRC Connection Resume Request (RRCConnectionResumeRequest) message to the eNB.
  • RRC Connection Resume Request RRCConnectionResumeRequest
  • the RRC connection recovery request message contains Resume ID, establishment cause, and shortResumeMAC-I.
  • the UE side restores all SRBs and DRBs, and derives a new key through the NCC contained in the last connection release message.
  • User data is encrypted and transmitted on the DTCH and multiplexed with the RRC connection recovery request message.
  • S52 The eNB sends a context recovery request message to the MME, requesting to initiate a context recovery procedure and reactivate the bearer between S1-U.
  • the MME initiates a request to the S-GW to reactivate the bearer between the UE and S1-U for subsequent user data delivery to the S-GW.
  • S54 The S-GW reactivates the bearer between the UE and S1-U.
  • the MME sends a context recovery response to the eNB to confirm the recovery of the UE context.
  • the eNB sends uplink data to the S-GW.
  • the S-GW sends downlink data to the e-NB. If the S-GW has downlink data to send at this time, the S-GW will deliver the downlink data to the eNB.
  • the eNB suspends the S1 connection, and the MME deactivates the bearer between the UE and S1-U.
  • the eNB sends an RRC connection release (RRCConnectionRelease) message to the UE to keep the UE in the suspend state.
  • RRC connection release RRCConnectionRelease
  • the UE has completed the transmission of the small data packet without actually entering the connected state.
  • the network will configure a maximum TBS that the current network allows to transmit on SIB2.
  • the UE judges the amount of data to be transmitted. If it is less than the maximum TBS broadcast, the UE can initiate EDT transmission; otherwise, the UE uses the normal connection establishment process to enter the connected state to transmit data.
  • the RRC state is divided into three types, namely RRC idle state, RRC inactive state and RRC connected state.
  • the RRC inactive state is a new state introduced by the 5G system from the perspective of energy saving.
  • the network usually keeps the UE with infrequent data transmission in the RRC inactive state.
  • the UE in the RRC inactive state did not support data transmission.
  • the small data transmission mode of the UE in the inactive state in the NR system can be based on the data transmission of the UE in the non-connected state in the LTE system, which is divided into small data transmission based on pre-configured resources and small data transmission based on random access.
  • Rel-16 introduces a two-step random access process. Therefore, small data transmission based on random access can be further divided into small data transmission based on four-step random access and small data transmission based on two-step random access. Based on this, this application proposes a solution for determining the small data transmission mode for the UE in the RRC inactive state.
  • the data introduced in the following solutions may include small packet data less than a certain threshold on the UE side, that is, small data.
  • the data transmission method includes the data transmission method when the terminal device is in the inactive state and the data transmission method based on the connected state, and the data transmission method when the terminal device is in the inactive state includes data based on pre-configured resources.
  • FIG. 6 is a schematic flowchart of a data transmission method provided by an embodiment of the application. As shown in FIG. 6, the method may include:
  • the terminal device determines the first data transmission mode according to the data transmission mode supported by the network device and the data transmission mode supported by the terminal device when the terminal device is in the inactive state.
  • S62 The terminal device sends uplink data to the network device according to the first data transmission mode.
  • the network device receives the uplink data according to the first data transmission mode.
  • the first data transmission mode can be determined by the data transmission mode supported by the network device and the terminal device when the terminal device is in the inactive state.
  • the network device can inform the terminal device through configuration information of the data transmission mode supported by the network device when the terminal device is in an inactive state.
  • the configuration information may also include data transmission resources.
  • the configuration information may include information such as the period of the pre-configured resources, TBS, and so on.
  • the configuration information may include random access-based data transmission resources, thresholds, and so on.
  • the first data transmission method is determined according to the data transmission method supported by the network device and the data transmission method supported by the terminal device when the terminal device is in the inactive state, and then the terminal device transmits the data according to the first data transmission method. Way to send uplink data to the network device.
  • the determined first data transmission method may be the data transmission method when the terminal device is in the inactive state, or may be the data transmission method based on the connected state.
  • the uplink data transmission can be completed when the terminal device is in the inactive state, without switching between the connected state and the inactive state, thereby reducing the difference between the terminal device and the network settings. Signaling overhead for power consumption.
  • the data transmission mode supported by the network device includes at least one of the data transmission mode based on random access and the data transmission mode based on pre-configured resources.
  • the data transmission mode supported by the terminal device includes: At least one of a random access data transmission method and a data transmission method based on pre-configured resources.
  • the data transmission mode supported by the network device and the terminal device can be any one or both of the data transmission mode based on random access and the data transmission mode based on pre-configured resources.
  • the first data transmission method finally determined by the terminal device may be a data transmission method based on random access, a data transmission method based on pre-configured resources, or a data transmission method based on a connected state.
  • the first data transmission method finally determined by the terminal device needs to be comprehensively determined according to the data transmission method supported by the network device and the terminal device when the terminal device is in the inactive state, as well as the terminal device's own capabilities, the uplink data that needs to be transmitted, etc. .
  • the process for the terminal device to select the first data transmission mode under different situations will be described.
  • the process of selecting between the data transmission method based on random access and the data transmission method based on pre-configured resources is introduced for the terminal device.
  • FIG. 7 is a schematic diagram 1 of the first data transmission mode selection provided by an embodiment of the application. As shown in FIG. 7, it shows that when the terminal device is in an inactive state, the data transmission mode supported by the network device is data transmission based on random access. Way of the situation.
  • the first data transmission mode may be a data transmission mode based on random access, or a data transmission mode based on the connection state, depending on the terminal device.
  • the first data transmission The method is a data transmission method based on random access.
  • the maximum data threshold refers to the maximum amount of data that can be transmitted based on the random access data transmission method. If the size of the uplink data exceeds the maximum data threshold, the uplink data cannot be transmitted through the data transmission method based on random access.
  • the maximum data threshold can be obtained by the terminal device through a message broadcast by the network device or determined by a data transmission resource based on random access.
  • the first data transmission mode is connection-based Mode of data transmission.
  • the data transmission mode supported by the terminal equipment includes the data transmission mode based on random access means that the data transmission mode supported by the terminal equipment is the data transmission mode based on random access, or the data transmission mode supported by the terminal equipment includes the data transmission mode based on random access. Incoming data transmission method and data transmission method based on pre-configured resources.
  • FIG. 8 is a schematic diagram of the second data transmission mode selection provided by an embodiment of the application. As shown in FIG. 8, it shows that when the terminal device is in an inactive state, the data transmission mode supported by the network device is data transmission based on pre-configured resources. Way of the situation.
  • the first data transmission mode may be a data transmission mode based on pre-configured resources, or a data transmission mode based on the connection state, depending on the terminal device.
  • the first data transmission mode supported by the terminal device includes a data transmission mode based on pre-configured resources, there are pre-configured resources allocated to the terminal device, and the pre-configured resources meet the transmission requirements of uplink data, then the first data transmission mode is based on Data transmission mode of pre-configured resources;
  • the first data transmission mode is a data transmission mode based on the connection state.
  • the pre-configured resource is a periodic uplink physical shared channel (PUSCH) resource allocated by the network device to the terminal device, including parameter configuration information such as period and TBS.
  • PUSCH physical shared channel
  • the pre-configured resource meeting the transmission requirement of the uplink data means that the pre-configured resource allocated by the network device to the terminal device can enable the terminal device to complete the transmission of the uplink data according to the pre-configured resource.
  • the pre-configured resources do not meet the transmission requirements of the uplink data; for example, when the size of the uplink data exceeds the preset
  • the pre-configured resources at this time also do not meet the uplink data transmission requirements; for example, when the allocated pre-configured resources instruct the terminal device to transmit the uplink data after 10ms, and the terminal device needs to complete the uplink within 5ms
  • the pre-configured resources at this time also do not meet the transmission demand of uplink data. There may be many reasons why the pre-configured resources do not meet the transmission requirements of the uplink data.
  • the network equipment allocates pre-configured resources according to its own state, but does not allocate according to the transmission requirements of the terminal equipment, then the pre-configured resources are possible at this time Does not meet the transmission requirements of uplink data.
  • the terminal device may choose the data transmission mode based on the pre-configured resource to transmit the uplink data to the network device. Among them, the terminal device may obtain the pre-configured resource from the configuration information sent by the network device to the terminal device.
  • the data transmission method supported by the terminal device includes the data transmission method based on pre-configured resources means that the data transmission method supported by the terminal device is the data transmission method based on pre-configured resources, or the data transmission method supported by the terminal device includes the data transmission method based on random access. Incoming data transmission method and data transmission method based on pre-configured resources.
  • Fig. 9 is a schematic diagram of the third selection of the first data transmission mode provided by the embodiment of the application. As shown in Fig. 9, it shows that when the terminal device is in the inactive state, the data transmission mode supported by the network device includes data transmission based on random access. And data transmission methods based on pre-configured resources.
  • Case 1 If the data transmission method supported by the terminal device is a data transmission method based on random access, the first data transmission method is a data transmission method based on random access or a data transmission method based on a connected state.
  • the terminal device selects the data transmission method based on random access or the data transmission method based on the connected state is similar to the selection scheme illustrated in FIG. 10. That is, if the size of the uplink data is less than or equal to the maximum data threshold supported by the data transmission mode based on random access, the first data transmission mode is the data transmission mode based on random access;
  • the first data transmission method is a data transmission method based on the connection state.
  • Case 2 If the data transmission mode supported by the terminal device is a data transmission mode based on pre-configured resources, the first data transmission mode is a data transmission mode based on pre-configured resources or a data transmission mode based on a connection state.
  • the terminal device selects the data transmission mode based on the pre-configured resource or the data transmission mode based on the connected state is similar to the selection solution illustrated in FIG. 11. That is, if there are pre-configured resources allocated to the terminal device, and the pre-configured resources meet the transmission demand of uplink data, the first data transmission mode is a data transmission mode based on the pre-configured resources;
  • the first data transmission method is a data transmission method based on the connection state.
  • the first data transmission method is a data transmission method based on random access, or a data transmission method based on pre-configured resources. Configure the data transmission method of the resource, or the data transmission method based on the connection state. This situation will be described below with reference to FIG. 10.
  • FIG. 10 is a schematic diagram four of the first data transmission mode selection provided by an embodiment of the application. As shown in FIG. 10, it illustrates the data transmission mode supported by the network device and the data transmission mode supported by the terminal device when the terminal device is in an inactive state Both include data transmission methods based on random access and data transmission methods based on pre-configured resources.
  • the first data transmission mode is the random access-based data transmission mode, or, The data transmission method based on the pre-configured resource, or the data transmission method based on the connection state.
  • the first data transmission method is based on random The access data transmission method, or the data transmission method based on pre-configured resources, or the data transmission method based on the connected state; if the pre-configured resources do not meet the transmission requirements of the uplink data, the first data transmission method is based on Random access data transmission method, or data transmission method based on connected state.
  • the first data transmission The method is a data transmission method based on random access; otherwise, the first data transmission method is a data transmission method based on a connected state.
  • the first data transmission mode It is a data transmission method based on pre-configured resources; if the pre-configured resources do not meet the transmission requirements of uplink data and other data, and the size of other data is less than or equal to the maximum data threshold supported by the data transmission method based on random access, the first The data transmission method is a data transmission method based on random access; otherwise, the first data transmission method is a data transmission method based on a connected state.
  • the conditions under which pre-configured resources meet the transmission requirements of uplink data are introduced.
  • the meaning of pre-configured resources meeting the transmission requirements of uplink data and other data is the same as in the foregoing embodiment.
  • the meaning of the pre-configured resources meeting the transmission requirements of the uplink data is similar, except that the data that needs to be transmitted at this time includes the original uplink data and other data.
  • the uplink data and other data transmitted together means that other data is transmitted to the network device together with one of the multiple periodically transmitted data, and the other periodically transmitted data The data remains unchanged. If in this case, the pre-configured resource meets the transmission requirements of uplink data and other data, a data transmission method based on the pre-configured resource can be adopted.
  • the terminal device cannot use the data transmission method based on the pre-configured resources to send the uplink data to the network device.
  • the network device can be instructed to release and/or reconfigure the pre-configured resources.
  • the terminal device may send the first instruction information to the network device. After receiving the first instruction information, the network device releases the pre-configured resource according to the first instruction information, and/or requests a new pre-configured resource, and/or sends Resource information of the terminal device.
  • the first data transmission method is a random access-based data transmission method or a connected state-based data transmission method .
  • the terminal device may also instruct the network device to release the pre-configured resources. For example, the terminal device may send the second instruction information to the network device, and the network device releases the pre-configured resource according to the second instruction information.
  • the network device may notify the supported data transmission mode and corresponding data resources by sending configuration information to the terminal device.
  • the configuration information can include pre-configured resources.
  • the configuration information can include a maximum data threshold and a data transmission method based on random access. Access to the resources of the data transmission method.
  • the above embodiments describe that when the terminal device is in an inactive state, according to the different data transmission modes supported by the network device and the terminal device, the terminal device is between the data transmission mode based on random access and the data transmission mode based on pre-configuration.
  • the random access involved in the embodiments of this application may include four-step random access (also referred to as four-step random access channel, or simply referred to as 4-step RACH) and two-step random access (also referred to as 4-step RACH). It is a two-step random access channel, or 2-step RACH for short).
  • data transmission methods based on random access it includes data transmission methods based on two-step random access and data transmission methods based on four-step random access.
  • FIG. 11 is a schematic diagram of a four-step random access process provided by an embodiment of this application.
  • the 4-step RACH has been defined in detail in the existing protocol TS38.300, and this application only briefly describes it. Referring to Figure 11, the method may include:
  • the terminal device sends Msg1 to the network device.
  • Msg1 can also be referred to as msg1 or MSG1, and Msg1 is used to transmit a random access preamble, and the random access preamble can also be referred to as a random access preamble sequence, or preamble, or preamble sequence.
  • the terminal device can select a PRACH resource, select a preamble, and send the selected preamble on the selected PRACH resource. If the random access method is based on non-contention random access, the base station can specify the PRACH resource and preamble, and the base station can estimate the timing advance (TA) based on the preamble sent by the terminal device, and the terminal device transmits Msg3. The required uplink grant size.
  • TA timing advance
  • the network device sends Msg2 to the terminal device.
  • Msg2 can also be referred to as msg2 or MSG2.
  • Msg2 includes the time-frequency resource that the network device determines to the terminal device to send the payload (payload). After the terminal device sends Msg1, it can open a random access response time window (ra-Response Window), and monitor the random access radio network temporary identifier (RA-RNTI) within the random access response time window. ) Scrambled physical downlink control channel (physical downlink control channel, PDCCH).
  • PDCCH physical downlink control channel
  • RAR random access response
  • the subheader of RAR contains a back-off indicator (BI), which is used to indicate the back-off time of retransmitting Msg1;
  • RAPID in RAR the preamble index received in the network response; in the payload of RAR Including the timing advance group (TAG), which is used to adjust the uplink timing;
  • TAG timing advance group
  • the uplink (uplink, UL) grant the uplink resource indication used to schedule Msg3; the temporary cell radio network temporary identifier (cell radio network temporary) identifier, C-RNTI): PDCCH used to scramble Msg4. If the terminal receives the PDCCH scrambled by the RA-RNTI and the preamble index sent by itself is included in the RAR, the terminal considers that it has successfully received the random access response.
  • the terminal device sends Msg3 to the network device.
  • Msg3 can also be referred to as msg3 or MSG3.
  • Msg3 is the first scheduled transmission in the random access process and sends a payload, such as an RRC connection request message, a tracking area update message, and so on.
  • Msg3 can notify the network device of what event triggered the RACH process. For example, if it is an initial access random process, Msg3 will carry the UE ID and connection establishment cause; if it is RRC reestablishment, it will carry the connected UE identifier and the connection establishment cause. It should be noted that if different terminal devices select the same preamble in S1101 and send the preamble on the same time-frequency resource, the different terminal devices send the payload on the same time-frequency resource, resulting in resource Use conflict.
  • the network device sends Msg4 to the terminal device.
  • Msg4 can also be called msg4 or MSG4, which is used to indicate whether the terminal device has successfully accessed the network device.
  • Msg4 can have the following two functions: one is to resolve competition conflicts. The other is that the network device transmits the RRC configuration message to the terminal device. There are two ways to resolve the contention conflict: one is that if the terminal device carries the C-RNTI in the Msg3, the Msg4 uses the C-RNTI scrambled PDCCH scheduling. The other is that if the terminal device does not carry C-RNTI in Msg3, such as initial access, Msg4 uses TC-RNTI scrambled PDCCH scheduling. The conflict resolution is that the terminal device receives the PDSCH of Msg4 and matches the PDSCH in the PDSCH.
  • Common control channel common control channel, CCCH
  • SDU service data unit
  • FIG. 12 is a schematic diagram of a two-step random access process provided by an embodiment of this application. Referring to Figure 12, the method may include:
  • the terminal device sends an MsgA to the network device.
  • MsgA may also be referred to as msgA or MSGA.
  • the msgA includes a preamble and a payload (for example, an RRC connection request message, a tracking area update message, etc.).
  • the network device sends the msgB to the terminal device.
  • msgB can also be called MsgB, or MSGB, and is used to indicate whether the terminal device has successfully accessed the network device.
  • the data transmission method based on random access includes the data transmission method based on four-step random access and the data transmission method based on two-step random access.
  • the data transmission method based on four-step random access refers to the method in which the terminal device completes uplink data transmission through the four-step random access process
  • the data transmission method based on two-step random access refers to It is a way to complete uplink data transmission in the terminal equipment through a two-step random access process.
  • the random access process is a process in which a terminal device and a network device establish a connection state. Before a connection is established, the terminal device is in an inactive state.
  • the uplink data Before a connection is established between the terminal device and the network device, the uplink data has been transmitted. After the uplink data transmission is completed, the terminal device is still restored to the inactive state, so the data transmission method based on four-step random access and the data transmission method based on two-step random access are both the data transmission method when the terminal device is in the inactive state. .
  • the choice between these two data transmission methods is introduced below.
  • the data transmission method supported by the network equipment includes the data transmission method based on random access, and the data transmission method supported by the terminal equipment is the data transmission method based on random access; or, the data transmission method supported by the network equipment is the data transmission method based on random access.
  • the first data transmission mode when the data transmission mode supported by the terminal device includes a data transmission mode based on random access, the first data transmission mode may be a data transmission mode based on random access or a data transmission mode based on a connection state.
  • data transmission methods based on random access include data transmission methods based on two-step random access and data transmission methods based on four-step random access.
  • the data transmission methods supported by network equipment include data transmission based on two-step random access. At least one of the data transmission method and the data transmission method based on four-step random access.
  • the data transmission method supported by the terminal device includes at least one of the data transmission method based on two-step random access and the data transmission method based on four-step random access. A sort of.
  • FIG. 13 is a schematic diagram five of the first data transmission mode selection provided by an embodiment of the application. As shown in FIG. 13, it shows that when the terminal device is in an inactive state, the data transmission mode supported by the network device is based on two-step random access. The situation of the data transmission method.
  • the first data transmission mode may be a data transmission mode based on two-step random access, or it may be a data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device and the uplink data that the terminal device needs to upload are comprehensively determined.
  • the first data transmission mode supported by the terminal device includes a data transmission mode based on two-step random access, and the size of the uplink data is less than or equal to the first data threshold, the first data transmission mode is based on two-step random access.
  • the first data threshold value is the maximum data value of the data transmission method based on two-step random access supported by the network device.
  • the first data threshold value can be obtained by the network device broadcast message or configured through the network.
  • Data transmission resource determination based on random access if the data transmission mode supported by the terminal device does not include the data transmission mode based on two-step random access, or the size of the uplink data is greater than the first data threshold, then the first data transmission mode It is a data transmission method based on the connection state.
  • FIG. 14 is a schematic diagram 6 of the first data transmission mode selection provided by an embodiment of the application. As shown in FIG. 14, it shows that when the terminal device is in the inactive state, the data transmission mode supported by the network device is based on four-step random access. The situation of the data transmission method.
  • the first data transmission mode may be a data transmission mode based on four-step random access, or it may be a data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device and the uplink data that the terminal device needs to upload are comprehensively determined.
  • the first data transmission mode is based on four-step random access.
  • the second data threshold is the maximum data value of the data transmission mode based on four-step random access supported by the network device, and the second data threshold can be obtained by the network device broadcast message;
  • the first data transmission mode is the data transmission mode based on the connection state.
  • FIG. 15 is a schematic diagram seven of the first data transmission mode selection provided by the embodiment of the application. As shown in FIG. 15, it shows that when the terminal device is in the inactive state, the data transmission mode supported by the network device includes the data transmission mode based on two-step random access. Data transmission method and data transmission method based on four-step random access.
  • the first data transmission method is a data transmission method based on two-step random access or a data transmission method based on a connected state.
  • the terminal device selects the data transmission mode based on two-step random access or the data transmission mode based on the connected state is similar to the selection scheme illustrated in FIG. 14. That is, if the size of the uplink data is less than or equal to the first data threshold, the first data transmission mode is the data transmission mode based on two-step random access, and the first data threshold is The maximum data value of the data transmission mode based on two-step random access supported by the network device;
  • the first data transmission mode is the data transmission mode based on the connection state.
  • Case 5 If the data transmission method supported by the terminal device is a data transmission method based on four-step random access, the first data transmission method is a data transmission method based on four-step random access or a data transmission method based on a connected state.
  • the terminal device selects the data transmission mode based on four-step random access or the data transmission mode based on the connected state is similar to the selection scheme illustrated in FIG. 15. That is, if the size of the uplink data is less than or equal to the second data threshold, the first data transmission mode is the data transmission mode based on four-step random access, and the second data threshold is The maximum data value of the data transmission mode based on four-step random access supported by the network device;
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the first data transmission method is the data transmission method based on two-step random access , Or, the data transmission method based on four-step random access, or the data transmission method based on the connected state.
  • the selection of the data transmission mode in this case will be described below in conjunction with FIG. 16.
  • FIG. 16 is a schematic diagram eight of the first data transmission mode selection provided by an embodiment of this application. As shown in FIG. 16, it illustrates the data transmission mode supported by the network device and the data transmission mode supported by the terminal device when the terminal device is in the inactive state. Both include data transmission methods based on two-step random access and data transmission methods based on four-step random access.
  • the first data threshold is the maximum data value of the data transmission method based on two-step random access supported by the network device.
  • the accessed data transmission method sends uplink data to the network device.
  • the second data threshold is the maximum data value of the data transmission method based on four-step random access supported by the network device.
  • the terminal device cannot pass the four-step random access
  • the data transmission method sends uplink data to the network device.
  • the first data transmission mode is a data transmission mode based on two-step random access; if the uplink data size is less than or Equal to the second data threshold and greater than the first data threshold, the first data transmission mode is a data transmission mode based on four-step random access; if the size of the uplink data is greater than the first data threshold and greater than the second Data threshold value, the first data transmission method is a data transmission method based on the connection state; if the size of the uplink data is less than or equal to the first data threshold value and less than or equal to the second data threshold value, then the first data transmission method The method is a data transmission method based on two-step random access or a data transmission method based on four-step random access;
  • Figure 17a is a schematic diagram 1 of determining a data transmission mode for random access provided by an embodiment of the application. As shown in Figure 17a, it illustrates the data transmission mode supported by the network device and the data transmission mode supported by the terminal device when the terminal device is in an inactive state.
  • Data transmission methods include data transmission methods based on two-step random access and data transmission methods based on four-step random access, and the size of the uplink data is less than or equal to the first data threshold and less than or equal to the second data threshold Value situation.
  • one can be selected as the first between the data transmission method based on two-step random access and the data transmission method based on four-step random access according to the reference signal received power between the terminal device and the network device.
  • the reference signal received power between the terminal device and the network device can be acquired. If the reference signal received power between the terminal device and the network device is less than or equal to the preset threshold, the first data transmission method is a data transmission method based on four-step random access; if the reference signal between the terminal device and the network device is received If the power is greater than the preset threshold, the first data transmission method is a data transmission method based on two-step random access.
  • Figure 17b is a second schematic diagram of determining the data transmission mode for random access provided by an embodiment of the application. As shown in Figure 17b, it illustrates the data transmission mode supported by the network device and the data transmission mode supported by the terminal device when the terminal device is in an inactive state.
  • Data transmission methods include data transmission methods based on two-step random access and data transmission methods based on four-step random access, and the size of the uplink data is less than or equal to the first data threshold and less than or equal to the second data threshold Value situation.
  • the data transmission method based on the two-step random access and the data transmission method based on the four-step random access can be used. Choose one of the data transmission modes as the first data transmission mode.
  • the reference signal received power between the terminal device and the network device can be acquired.
  • the first data transmission mode is a data transmission mode based on four-step random access. If the reference signal received power between the terminal device and the network device is greater than the preset threshold, compare the TBS of the two data transmission modes with the uplink data. If the difference between the transmission block size TBS of the data transmission method based on two-step random access and the uplink data is less than or equal to the difference between the TBS of the data transmission method based on four-step random access and the uplink data, then the first data The transmission mode is a data transmission mode based on two-step random access; otherwise, the first data transmission mode is a data transmission mode based on four-step random access.
  • a data transmission method based on four-step random access supports a TBS of 1000 bits
  • a data transmission method based on two-step random access supports a TBS of 1500 bits
  • the size of uplink data is 800 bits.
  • the terminal device can choose to be based on four steps Random access data transmission mode; otherwise, the terminal equipment still chooses the data transmission mode based on two-step random access.
  • the network device may notify the supported data transmission mode and corresponding data resources by sending configuration information to the terminal device.
  • the configuration information can include the first data threshold value, which is used for the resources of the data transmission method based on the two-step random access; the network device supports the data transmission method based on the four-step random access.
  • the configuration information can include the second data threshold value, which is used for the resources of the data transmission mode based on four-step random access; the network device supports the data transmission mode based on two-step random access and the data transmission mode based on In the four-step random access data transmission mode, the configuration information may include the first data threshold value, which is used for the resources of the data transmission mode based on two-step random access, and the second data threshold value and the data transmission method based on the four-step random access. In addition to the resources of the random access data transmission mode, it may also include the reference signal received power threshold.
  • FIG. 18 is a schematic structural diagram of a data transmission device provided by an embodiment of the application. As shown in FIG. 18, the data transmission device 180 includes:
  • the selection module 181 is configured to determine the first data transmission mode according to the data transmission mode supported by the network device and the data transmission mode supported by the terminal device when the terminal device is in the inactive state;
  • the sending module 182 is configured to send uplink data to the network device according to the first data transmission mode.
  • the data transmission mode supported by the network device includes: at least one of a data transmission mode based on random access and a data transmission mode based on pre-configured resources;
  • the data transmission mode supported by the terminal device includes: at least one of the data transmission mode based on random access and the data transmission mode based on pre-configured resources.
  • the first data transmission manner is one of the following data transmission manners:
  • a data transmission method based on random access a data transmission method based on pre-configured resources; a data transmission method based on a connected state, wherein the data transmission method based on a connected state is to establish a connection between the terminal device and the network device The method of data transmission afterwards.
  • the data transmission mode supported by the network device includes a data transmission mode based on random access and a data transmission mode based on pre-configured resources;
  • the first data transmission mode is the random access-based data transmission mode or the connected state-based data transmission mode
  • the first data transmission method is the data transmission method based on pre-configured resources or the data transmission method based on the connection state Way.
  • the first data transmission mode is the data transmission mode based on random access The transmission method, or the data transmission method based on pre-configured resources, or the data transmission method based on the connection state.
  • the data transmission mode supported by the terminal device includes the data transmission mode based on random access and the data transmission mode based on pre-configured resources;
  • the first data transmission mode is the random access-based data transmission mode, or, The data transmission method based on the pre-configured resource, or the data transmission method based on the connection state;
  • the first data transmission mode is the random access-based data transmission mode Or the data transmission method based on the connection state.
  • the uplink data includes a plurality of periodically transmitted data
  • the first data transmission mode is the random access-based data transmission mode, or the pre-configured resource-based data transmission mode, or, The data transmission method based on the connection state;
  • the first data transmission mode is the random access-based data transmission mode or the connected state-based data transmission mode.
  • the pre-configured resource meets the transmission demand of the uplink data, and the timing advance TA timer expires;
  • the first data transmission mode is the random access-based data transmission mode; otherwise, the The first data transmission method is the data transmission method based on the connection state.
  • the pre-configured resource meets the transmission demand of the uplink data, and the terminal device includes other data except the multiple periodically transmitted data;
  • the first data transmission mode is the data transmission mode based on the pre-configured resource
  • the first data transmission mode is the data transmission mode based on random access
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the pre-configured resource does not meet the transmission requirement of the uplink data
  • the sending module is further configured to:
  • the uplink data does not include multiple periodically transmitted data; the sending module is further configured to:
  • the data transmission mode supported by the network device is a data transmission mode based on random access
  • the first data transmission mode is the data transmission mode based on random access
  • the first data transmission mode is a data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device is the data transmission mode based on random access
  • the first data transmission mode is the random access-based data transmission mode
  • the first data transmission mode is a data transmission mode based on the connection state.
  • the data transmission mode supported by the network device is a data transmission mode based on pre-configured resources
  • the first data transmission method is the data transmission method based on the pre-configured resource; otherwise, the first data transmission method is the data transmission method based on the connection state.
  • the data transmission mode supported by the terminal device is the data transmission mode based on pre-configured resources
  • the first data transmission mode is the data transmission mode based on the pre-configured resource
  • the first data transmission mode is a data transmission mode based on the connection state.
  • the data transmission mode supported by the network device includes a data transmission mode based on random access, and the data transmission mode supported by the terminal device is the data transmission mode based on random access; or
  • the data transmission mode supported by the network device is the data transmission mode based on random access, and the data transmission mode supported by the terminal device includes the data transmission mode based on random access.
  • the data transmission method based on random access includes a data transmission method based on two-step random access and a data transmission method based on four-step random access;
  • the data transmission mode supported by the network device includes at least one of the data transmission mode based on two-step random access and the data transmission mode based on four-step random access; the data transmission mode supported by the terminal device It includes at least one of the data transmission method based on two-step random access and the data transmission method based on four-step random access.
  • the data transmission mode supported by the network device is the data transmission mode based on two-step random access
  • the first data transmission mode supported by the terminal device includes the data transmission mode based on two-step random access, and the size of the uplink data is less than or equal to the first data threshold, the first data transmission mode is In the data transmission mode based on two-step random access, the first data threshold is the maximum data value of the data transmission mode based on the two-step random access supported by the network device;
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the data transmission mode supported by the network device is the data transmission mode based on four-step random access
  • the first data transmission mode is In the data transmission mode based on four-step random access
  • the second data threshold is the maximum data value of the data transmission mode based on four-step random access supported by the network device
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the data transmission mode supported by the network device includes the data transmission mode based on two-step random access and the data transmission mode based on four-step random access;
  • the first data transmission mode is the data transmission mode based on two-step random access or the connection-based data transmission mode Mode of data transmission;
  • the first data transmission mode is the four-step random access-based data transmission mode or the connection-based data transmission mode Mode of data transmission;
  • the first data transmission mode is the two-step random access-based data transmission mode.
  • the data transmission mode supported by the terminal device is the data transmission mode based on two-step random access
  • the first data transmission mode is the data transmission mode based on two-step random access
  • the first data threshold is the The maximum data value of the data transmission method based on two-step random access supported by the network device
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device is the data transmission mode based on four-step random access
  • the first data transmission mode is the data transmission mode based on four-step random access
  • the second data threshold is the The maximum data value of the data transmission method based on four-step random access supported by the network device
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device includes the data transmission mode based on two random access and the data transmission mode based on four-step random access;
  • the first data transmission mode is the data transmission mode based on two-step random access ;
  • the first data transmission mode is the data transmission mode based on four-step random access ;
  • the first data transmission mode is the data transmission mode based on the connection state
  • the first data transmission mode is the data based on two-step random access Transmission mode or the data transmission mode based on four-step random access;
  • the first data threshold value is the maximum data value of the data transmission mode based on two-step random access supported by the network device
  • the second data threshold value is the four-step data transmission method supported by the network device. The maximum data value of the random access data transmission method.
  • the size of the uplink data is less than or equal to the first data threshold and less than or equal to the second data threshold;
  • the first data transmission mode is the data transmission mode based on four-step random access
  • the first data transmission method is the data transmission method based on two-step random access or the data transmission method based on four steps. Step random access data transmission method.
  • the reference signal received power is greater than the preset threshold
  • the first data transmission mode is the data transmission mode based on two-step random access.
  • the reference signal received power is greater than the preset threshold
  • the first data transmission mode is the data transmission mode based on two-step random access
  • the first data transmission mode is the data transmission mode based on four-step random access.
  • the data transmission device provided in the embodiments of the present application can execute the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects are similar, and details are not described herein again.
  • FIG. 19 is a schematic structural diagram of a data transmission device provided by an embodiment of the application. As shown in FIG. 19, the data transmission device 190 includes:
  • the receiving module 191 is configured to receive the uplink data sent by the terminal device according to the first data transmission mode, where the first data transmission mode is that the terminal device supports the terminal device through the network device when the terminal device is in an inactive state.
  • the data transmission mode and the data transmission mode supported when the terminal device is in the inactive state are determined.
  • the data transmission mode supported by the network device includes: at least one of a data transmission mode based on random access and a data transmission mode based on pre-configured resources;
  • the data transmission mode supported by the terminal device includes: at least one of the data transmission mode based on random access and the data transmission mode based on pre-configured resources.
  • the first data transmission manner is one of the following data transmission manners:
  • a data transmission method based on random access a data transmission method based on pre-configured resources; a data transmission method based on a connected state, wherein the data transmission method based on a connected state is to establish a connection between the terminal device and the network device The method of data transmission afterwards.
  • the data transmission mode supported by the network device includes a data transmission mode based on random access and a data transmission mode based on pre-configured resources;
  • the first data transmission mode is the random access-based data transmission mode or the connected state-based data transmission mode
  • the first data transmission method is the data transmission method based on pre-configured resources or the data transmission method based on the connection state Way.
  • the first data transmission mode is the data transmission mode based on random access The transmission method, or the data transmission method based on pre-configured resources, or the data transmission method based on the connection state.
  • the data transmission mode supported by the terminal device includes the data transmission mode based on random access and the data transmission mode based on pre-configured resources;
  • the first data transmission mode is the random access-based data transmission mode, or, The data transmission method based on the pre-configured resource, or the data transmission method based on the connection state;
  • the first data transmission mode is the random access-based data transmission mode Or the data transmission method based on the connection state.
  • the uplink data includes a plurality of periodically transmitted data
  • the first data transmission mode is the random access-based data transmission mode, or the pre-configured resource-based data transmission mode, or, The data transmission method based on the connection state;
  • the first data transmission mode is the random access-based data transmission mode or the connected state-based data transmission mode.
  • the pre-configured resource meets the transmission demand of the uplink data, and the timing advance TA timer expires;
  • the first data transmission mode is the random access-based data transmission mode; otherwise, the The first data transmission method is the data transmission method based on the connection state.
  • the pre-configured resource meets the transmission demand of the uplink data, and the terminal device includes other data except the multiple periodically transmitted data;
  • the first A data transmission method is the data transmission method based on pre-configured resources
  • the first data transmission mode is the random access-based data transmission mode; otherwise, the first data transmission mode This is the data transmission method based on the connection state.
  • the pre-configured resource does not meet the transmission requirement of the uplink data
  • the receiving module is further configured to:
  • the uplink data does not include multiple periodically transmitted data; the receiving module is further configured to:
  • the data transmission mode supported by the network device is a data transmission mode based on random access
  • the first data transmission mode is the data transmission mode based on random access
  • the first data transmission mode is a data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device is the data transmission mode based on random access
  • the first data transmission mode is the random access-based data transmission mode
  • the first data transmission mode is a data transmission mode based on the connection state.
  • the data transmission mode supported by the network device is a data transmission mode based on pre-configured resources
  • the first data transmission mode is the data transmission mode based on pre-configured resources
  • the first data transmission mode is a data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device is the data transmission mode based on pre-configured resources
  • the first data transmission mode is the data transmission mode based on the pre-configured resource
  • the first data transmission mode is a data transmission mode based on the connection state.
  • the data transmission mode supported by the network device includes a data transmission mode based on random access, and the data transmission mode supported by the terminal device is the data transmission mode based on random access; or ,
  • the data transmission mode supported by the network device is the data transmission mode based on random access
  • the data transmission mode supported by the terminal device includes the data transmission mode based on random access.
  • the data transmission method based on random access includes a data transmission method based on two-step random access and a data transmission method based on four-step random access;
  • the data transmission mode supported by the network device includes at least one of the data transmission mode based on two-step random access and the data transmission mode based on four-step random access;
  • the data transmission mode supported by the terminal device includes at least one of the data transmission mode based on two-step random access and the data transmission mode based on four-step random access.
  • the data transmission mode supported by the network device is the data transmission mode based on two-step random access
  • the first data transmission mode supported by the terminal device includes the data transmission mode based on two-step random access, and the size of the uplink data is less than or equal to the first data threshold, the first data transmission mode is In the data transmission mode based on two-step random access, the first data threshold is the maximum data value of the data transmission mode based on the two-step random access supported by the network device;
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the data transmission mode supported by the network device is the data transmission mode based on four-step random access
  • the first data transmission mode is In the data transmission mode based on four-step random access
  • the second data threshold is the maximum data value of the data transmission mode based on four-step random access supported by the network device
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the data transmission mode supported by the network device includes the data transmission mode based on two-step random access and the data transmission mode based on four-step random access;
  • the first data transmission mode is the data transmission mode based on two-step random access or the connection-based data transmission mode Mode of data transmission;
  • the first data transmission mode is the four-step random access-based data transmission mode or the connection-based data transmission mode Mode of data transmission;
  • the first data transmission mode is the two-step random access-based data transmission mode.
  • the data transmission mode supported by the terminal device is the data transmission mode based on two-step random access
  • the first data transmission mode is the data transmission mode based on two-step random access
  • the first data threshold is the The maximum data value of the data transmission method based on two-step random access supported by the network device
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device is the data transmission mode based on four-step random access
  • the first data transmission mode is the data transmission mode based on four-step random access
  • the second data threshold is the The maximum data value of the data transmission method based on four-step random access supported by the network device
  • the first data transmission mode is the data transmission mode based on the connection state.
  • the data transmission mode supported by the terminal device includes the data transmission mode based on two random access and the data transmission mode based on four-step random access;
  • the first data transmission mode is the data transmission mode based on two-step random access ;
  • the first data transmission mode is the data transmission mode based on four-step random access ;
  • the first data transmission mode is the data transmission mode based on the connection state
  • the first data transmission mode is the data based on two-step random access Transmission mode or the data transmission mode based on four-step random access;
  • the first data threshold value is the maximum data value of the data transmission mode based on two-step random access supported by the network device
  • the second data threshold value is the four-step data transmission method supported by the network device. The maximum data value of the random access data transmission method.
  • the size of the uplink data is less than or equal to the first data threshold and less than or equal to the second data threshold;
  • the first data transmission mode is the data transmission mode based on four-step random access
  • the first data transmission method is the data transmission method based on two-step random access or the data transmission method based on four steps. Step random access data transmission method.
  • the reference signal received power is greater than the preset threshold
  • the first data transmission mode is the data transmission mode based on two-step random access.
  • the reference signal received power is greater than the preset threshold
  • the first data transmission mode is the data transmission mode based on two-step random access
  • the first data transmission mode is the data transmission mode based on four-step random access.
  • the data transmission device provided in the embodiments of the present application can execute the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects are similar, and details are not described herein again.
  • FIG. 20 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
  • the terminal device 200 may include: a transceiver 201, a memory 202, and a processor 203.
  • the transceiver 201 may include: a transmitter and/or a receiver.
  • the transmitter can also be referred to as a transmitter, a transmitter, a transmitting port, or a transmitting interface
  • the receiver can also be referred to as a receiver, a receiver, a receiving port, or a receiving interface, and other similar descriptions.
  • the transceiver 201, the memory 202, and the processor 203 are connected to each other through a bus 204.
  • the memory 202 is used to store program instructions
  • the processor 203 is configured to execute program instructions stored in the memory, so as to enable the terminal device 200 to execute any of the above-mentioned data transmission methods.
  • the receiver of the transceiver 201 can be used to perform the receiving function of the terminal device in the above-mentioned data transmission method.
  • FIG. 21 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • the network device 210 may include: a transceiver 211, a memory 212, and a processor 213.
  • the transceiver 211 may include a transmitter and/or a receiver.
  • the transmitter can also be referred to as a transmitter, a transmitter, a transmitting port, or a transmitting interface
  • the receiver can also be referred to as a receiver, a receiver, a receiving port, or a receiving interface, and other similar descriptions.
  • the transceiver 211, the memory 212, and the processor 213 are connected to each other through a bus 214.
  • the memory 212 is used to store program instructions
  • the processor 213 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 210 to execute any of the above-mentioned data transmission methods.
  • the receiver of the transceiver 211 can be used to perform the receiving function of the terminal device in the above-mentioned data transmission method.
  • An embodiment of the present application provides a computer-readable storage medium that stores a computer-executable instruction, and when the computer-executable instruction is executed by a processor, it is used to implement the above-mentioned data transmission method.
  • the embodiments of the present application may also provide a computer program product, which can be executed by a processor, and when the computer program product is executed, it can implement the data transmission method executed by any of the above-mentioned terminal devices.
  • the data transmission device, computer-readable storage medium, and computer program product of the embodiments of the present application can execute the data transmission method executed by the above-mentioned terminal device.
  • the specific implementation process and beneficial effects refer to the above, and will not be repeated here.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the aforementioned computer program can be stored in a computer readable storage medium.
  • the computer program When the computer program is executed by the processor, it realizes the steps including the foregoing method embodiments; and the foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disk and other media that can store program codes.

Landscapes

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

Abstract

Un procédé et un appareil de transmission de données sont divulgués. Le procédé comprend : la détermination d'un premier mode de transmission de données selon un mode de transmission de données pris en charge par un dispositif de réseau et un mode de transmission de données pris en charge par un équipement terminal lorsque l'équipement terminal est dans un état inactif ; et l'envoi de données de liaison montante au dispositif de réseau selon le premier mode de transmission de données. La consommation d'énergie et le surdébit de signalisation lorsqu'un équipement terminal transmet des données de liaison montante peuvent être réduits.
PCT/CN2020/084563 2020-04-13 2020-04-13 Procédé et appareil de transmission de données WO2021207902A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/084563 WO2021207902A1 (fr) 2020-04-13 2020-04-13 Procédé et appareil de transmission de données
CN202080097263.2A CN115136645A (zh) 2020-04-13 2020-04-13 数据传输方法及装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/084563 WO2021207902A1 (fr) 2020-04-13 2020-04-13 Procédé et appareil de transmission de données

Publications (1)

Publication Number Publication Date
WO2021207902A1 true WO2021207902A1 (fr) 2021-10-21

Family

ID=78083626

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/084563 WO2021207902A1 (fr) 2020-04-13 2020-04-13 Procédé et appareil de transmission de données

Country Status (2)

Country Link
CN (1) CN115136645A (fr)
WO (1) WO2021207902A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023202164A1 (fr) * 2022-04-22 2023-10-26 荣耀终端有限公司 Procédé de communication, appareil de communication et système de communication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106793170A (zh) * 2016-09-29 2017-05-31 展讯通信（上海）有限公司 用户终端及数据的传输方法
CN108184214A (zh) * 2016-12-08 2018-06-19 中兴通讯股份有限公司 一种确定数据发送方式的方法及装置
CN108834090A (zh) * 2017-05-05 2018-11-16 电信科学技术研究院 一种辅助信息传输方法及装置
CN110022594A (zh) * 2018-01-09 2019-07-16 维沃移动通信有限公司 一种小区选择方法、终端及网络设备
US10582560B2 (en) * 2017-03-17 2020-03-03 Ofinno, Llc Radio access network notification area update failure

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107371264B (zh) * 2016-05-12 2019-08-16 电信科学技术研究院 一种上行数据传输的方法及设备
KR102320402B1 (ko) * 2016-08-12 2021-11-02 한국전자통신연구원 통신 시스템에서 랜덤 액세스 절차에 기초한 상태 천이 방법
JP6773224B2 (ja) * 2016-12-23 2020-10-21 富士通株式会社 データ送信／受信装置、方法及び通信システム
CN111541513B (zh) * 2017-01-05 2024-04-09 华为技术有限公司 数据的传输方法和装置
CN108282816A (zh) * 2017-01-05 2018-07-13 中兴通讯股份有限公司 一种接入方法及接入装置
AU2017429654A1 (en) * 2017-08-28 2019-12-05 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Data transmission method, network device, and terminal device
EP3841824B1 (fr) * 2018-09-21 2023-11-01 Samsung Electronics Co., Ltd. Procédé et appareil pour exécuter une procédure d'accès aléatoire en deux étapes ou en quattre étapes
US10856257B2 (en) * 2018-09-28 2020-12-01 Lg Electronics Inc. Timing advance command for uplink transmission
CN112470546B (zh) * 2018-09-28 2023-08-29 Lg 电子株式会社 无线通信系统中确定是在随机接入还是配置的许可上执行传输的方法和装置
CN110856276B (zh) * 2019-11-15 2022-03-22 展讯通信（上海）有限公司 非连接态ue的数据传输、接收方法及装置、终端、基站

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106793170A (zh) * 2016-09-29 2017-05-31 展讯通信（上海）有限公司 用户终端及数据的传输方法
CN108184214A (zh) * 2016-12-08 2018-06-19 中兴通讯股份有限公司 一种确定数据发送方式的方法及装置
US10582560B2 (en) * 2017-03-17 2020-03-03 Ofinno, Llc Radio access network notification area update failure
CN108834090A (zh) * 2017-05-05 2018-11-16 电信科学技术研究院 一种辅助信息传输方法及装置
CN110022594A (zh) * 2018-01-09 2019-07-16 维沃移动通信有限公司 一种小区选择方法、终端及网络设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "RRC state transition", 3GPP DRAFT; R2-1701791 RRC STATE TRANSITION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Athens, Greece; 20170213 - 20170217, 12 February 2017 (2017-02-12), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051212357 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023202164A1 (fr) * 2022-04-22 2023-10-26 荣耀终端有限公司 Procédé de communication, appareil de communication et système de communication

Also Published As

Publication number Publication date
CN115136645A (zh) 2022-09-30

Similar Documents

Publication Publication Date Title
US10149339B2 (en) Base station, user equipment and methods for random access
CN110351879B (zh) 一种通信方法及装置
CN113453343B (zh) 业务的请求方法及装置
CN109644500B (zh) 用于单随机接入过程的多随机接入前导传输
CN113597794B (zh) 随机接入的方法和设备
WO2021253431A1 (fr) Procédé et appareil de surveillance d'un canal physique de commande de liaison descendante (pdcch)
US20220124824A1 (en) Method for random access and communication device
WO2021207902A1 (fr) Procédé et appareil de transmission de données
CN117480815A (zh) 用于非地面网络卫星切换的方法、终端设备及网络设备
WO2022116099A1 (fr) Procédé et appareil de commande de déclenchement pour un accès aléatoire, dispositif, et support de stockage
WO2022067614A1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif de réseau
WO2021062837A1 (fr) Procédé et dispositif de communication
JP2023519396A (ja) 端末デバイスによって実行される方法、及び端末デバイス
CN116074977A (zh) 通信方法、装置及系统
WO2023082114A1 (fr) Procédé et appareil de communication
WO2022236504A1 (fr) Procédé et appareil de communication
WO2024119496A1 (fr) Procédés et appareils de communication, et dispositif, support d'enregistrement, puce, produit et programme
WO2023097504A1 (fr) Procédés et appareils de communication, dispositif de communication, support de stockage, puce, produit et programme
WO2022006915A1 (fr) Procédé et appareil de transmission de données de liaison montante, terminal et support de stockage
US20220353907A1 (en) Method and apparatus for random access type selection
WO2023137643A1 (fr) Procédé et appareil de demande de transmission répétée, dispositif, système, puce et support de stockage
WO2022116093A1 (fr) Procédés et dispositifs de communication sans fil
US20240155692A1 (en) Communication method, terminal device and network device
WO2024119317A1 (fr) Procédé de communication sans fil et dispositif terminal
WO2024098579A1 (fr) Procédé pour commutation de cellule à activation couche 1/couche 2 et acquisition d'avance temporelle dans un système de communication sans fil

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: 20931285

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20931285

Country of ref document: EP

Kind code of ref document: A1