WO2023039809A1 - Sr触发方法、随机接入方法、装置、设备及存储介质 - Google Patents

Sr触发方法、随机接入方法、装置、设备及存储介质 Download PDF

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Publication number
WO2023039809A1
WO2023039809A1 PCT/CN2021/118880 CN2021118880W WO2023039809A1 WO 2023039809 A1 WO2023039809 A1 WO 2023039809A1 CN 2021118880 W CN2021118880 W CN 2021118880W WO 2023039809 A1 WO2023039809 A1 WO 2023039809A1
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Prior art keywords
terminal
offset
threshold
random access
uplink
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PCT/CN2021/118880
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English (en)
French (fr)
Inventor
胡奕
李海涛
于新磊
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Oppo广东移动通信有限公司
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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 CN202180099923.5A priority Critical patent/CN117561756A/zh
Priority to PCT/CN2021/118880 priority patent/WO2023039809A1/zh
Publication of WO2023039809A1 publication Critical patent/WO2023039809A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present application relates to the field of mobile communications, and in particular to a scheduling request (Scheduling Request, SR) triggering method, random access method, device, equipment and storage medium.
  • SR scheduling request
  • a New Radio (NR) system in order to ensure the orthogonality of uplink transmission, network equipment requires that signals from different terminals at the same time but with different frequency domain resources reach the network equipment at basically the same time.
  • the NR system supports an uplink timing advance (Timing Advance, TA) mechanism.
  • Timing Advance, TA uplink timing advance
  • NTN Non Terrestrial Network
  • the signal transmission delay between the UE and the network is greatly increased.
  • the timing relationship of the NTN system is enhanced compared to the NR system.
  • an offset parameter K offset is introduced into its timing relationship, and the value of this parameter is configured by the network.
  • the network device mainly uses the TA value to configure the value of the offset parameter k offset .
  • the terminal can assist the network device to configure the offset parameter k offset for the terminal by reporting the TA.
  • the TA value actually used by the terminal may be greater than the offset parameter k offset configured by the network device, resulting in the terminal being unable to The resource allocation instruction of the network device for uplink transmission performs normal uplink transmission.
  • RRC Radio Resource Control
  • the embodiment of the present application provides an SR triggering method, random access method, device, device and storage medium, so that the terminal can report TA to the network device in time, and then assist the network device to configure an appropriate k offset for the terminal.
  • an SR triggering method is provided, which is applied to a terminal in an RRC connected state, and the method includes:
  • Trigger SR when TA report is triggered but the uplink resource meets the unavailable condition
  • the uplink resource is a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) resource used for uplink new transmission.
  • PUSCH Physical Uplink Shared Channel
  • a random access method which is applied to a terminal in an RRC connected state, and the method includes:
  • the trigger condition includes: the TA of the terminal exceeds an offset parameter k offset , or the difference between the k offset and the TA is less than or equal to a fourth threshold.
  • an information configuration method which is applied to a network device, and the method includes:
  • an SR trigger device comprising:
  • a triggering module configured to trigger SR when triggering TA reporting but uplink resources meet unavailable conditions
  • the uplink resources are PUSCH resources used for uplink new transmission.
  • a random access device includes:
  • An access module configured to trigger a random access process when a trigger condition is met
  • the trigger condition includes: the TA of the terminal exceeds an offset parameter k offset , or the difference between the offset parameter k offset and the TA is less than or equal to a fourth threshold.
  • an information configuration device comprising:
  • the sending module is configured to send the SR configuration to the terminal, and the SR configuration is used to configure the TA of the terminal to report the corresponding SR configuration.
  • a terminal includes a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor, the processor is configured To load and execute the executable instructions to implement the above-mentioned SR triggering method, or the above-mentioned random access method.
  • a network device includes a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor; wherein, the The processor is configured to load and execute the executable instructions to implement the above-mentioned SR triggering method, or the above-mentioned random access method, or the above-mentioned information configuration method.
  • a computer-readable storage medium wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by the processor to implement the above-mentioned SR
  • the terminal When the TA report is triggered but the uplink resource meets the unavailable condition, the terminal triggers SR to inform the network device to schedule the uplink resource for the TA report to the terminal, so that the terminal can report the TA in a timely manner, avoiding the occurrence of TA greater than k offset value, so as to ensure that the terminal can perform normal uplink transmission.
  • FIG. 1 is a network architecture diagram of a transparent transmission load NTN provided by an exemplary embodiment of the present application
  • FIG. 2 is a network architecture diagram of a regenerative load NTN provided by an exemplary embodiment of the present application
  • Fig. 3 is the timing relationship of the NTN system provided by an exemplary embodiment of the present application.
  • Fig. 4 is the timing relationship of the NTN system provided by an exemplary embodiment of the present application.
  • FIG. 5 is a flowchart of an SR triggering method provided by an exemplary embodiment of the present application.
  • FIG. 6 is a flowchart of an SR triggering method provided by an exemplary embodiment of the present application.
  • FIG. 7 is a flowchart of an SR triggering method provided by an exemplary embodiment of the present application.
  • FIG. 8 is a flowchart of a random access method provided by an exemplary embodiment of the present application.
  • FIG. 9 is a flowchart of a random access method provided in an exemplary embodiment of the present application.
  • FIG. 10 is a flowchart of an SR triggering method provided by an exemplary embodiment of the present application.
  • FIG. 11 is a flowchart of a random access method provided in an exemplary embodiment of the present application.
  • Fig. 12 is a flowchart of an information configuration method provided by an exemplary embodiment of the present application.
  • Fig. 13 is a flowchart of an information configuration method provided by an exemplary embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of an SR trigger device provided by an exemplary embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a random access device provided by an exemplary embodiment of the present application.
  • Fig. 16 is a schematic structural diagram of an information configuration device provided by an exemplary embodiment of the present application.
  • Fig. 17 is a block diagram of a communication device shown in an exemplary embodiment of the present application.
  • Satellite communication is not restricted by the user's region. For example, general land communication cannot cover areas such as oceans, mountains, deserts, etc. that cannot be equipped with communication equipment or are not covered by communication due to sparse population. For satellite communication, due to a Satellites can cover a large area of the ground, and satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has great social value.
  • Satellite communication can be covered at a lower cost in remote mountainous areas, poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed regions and promoting development of these areas.
  • the distance of satellite communication is long, and the cost of communication does not increase significantly with the increase of communication distance; finally, the stability of satellite communication is high, and it is not limited by natural disasters.
  • LEO Low-Earth Orbit
  • MEO Medium-Earth Orbit
  • GEO Geostationary Earth Orbit
  • HEO High Elliptical Orbit
  • the altitude range of low-orbit satellites is 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is generally less than 20ms.
  • the maximum satellite visible time is 20 minutes.
  • the signal propagation distance is short, the link loss is small, and the requirements for the transmission power of the user terminal are not high.
  • Satellites in geosynchronous orbit have an orbital altitude of 35786km and a period of 24 hours around the earth.
  • the signal propagation delay of single-hop communication between users is generally 250ms.
  • satellites use multi-beams to cover the ground.
  • a satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. ground area.
  • Fig. 1 shows the scenario of transparently transmitting the NTN payload
  • Fig. 2 shows the scenario of regenerating the NTN payload.
  • the NTN network consists of the following network elements:
  • ⁇ 1 or more gateways used to connect satellites and terrestrial public networks.
  • Feeder link The link used for communication between the gateway and the satellite.
  • Service link a link used for communication between the terminal and the satellite.
  • ⁇ Satellite From the functions it provides, it can be divided into two types: transparent transmission load and regenerative load.
  • Transparent transmission load only provide the functions of radio frequency filtering, frequency conversion and amplification. It only provides transparent forwarding of signals, and will not change the waveform signal it forwards.
  • Regenerative load In addition to providing radio frequency filtering, frequency conversion and amplification functions, it can also provide demodulation/decoding, routing/conversion, encoding/modulation functions. It has some or all functions of network equipment.
  • Inter-satellite links Exist in regenerative load scenarios.
  • the network device 16 may be a base station, and a base station is a device for providing wireless communication functions for terminals.
  • the base station may include various forms of macro base stations, micro base stations, relay stations, access points and so on.
  • the names of devices with base station functions may be different.
  • eNodeB or eNB In LTE systems, they are called eNodeB or eNB; in 5G NR-U systems, they are called gNodeB or gNB.
  • the description "base station" may change.
  • the above-mentioned devices that provide the wireless communication function for the terminal 14 are collectively referred to as network devices.
  • the random access process refers to the process from when the terminal sends a random access preamble and starts trying to access the network to establishing a basic signaling connection with the network.
  • the random access process is used to establish data communication between the terminal and the network side.
  • two types of random access procedures are mainly supported, namely type 1 random access procedure and type 2 random access procedure.
  • Type 1 random access process (four-step random access process).
  • the random access process of type 1 mainly includes the following steps:
  • Step 1 the terminal sends a message 1 (msg1) to the network device: a random access preamble (preamble).
  • the terminal sends the selected random access preamble on the time-frequency resource of the selected physical random access channel (Physical Random Access Channel, PRACH).
  • the network device can estimate the uplink delay (Timing) based on the random access preamble, and the terminal Grant size required to transmit message 3.
  • Step 2 the network device sends message 2 (msg2) to the terminal: Random Access Response (Random Access Response, RAR).
  • RAR Random Access Response
  • the terminal After the terminal sends the message 1 (msg1), it opens a random access response window (RAR window), and monitors the physical downlink control channel (Physical Downlink Control Channel, PDCCH) in the random access response window.
  • the PDCCH is a PDCCH scrambled with a Random Access Radio Network Temporary Identifier (RA-RNTI).
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • the terminal After successfully monitoring the PDCCH scrambled by the RA-RNTI, the terminal can obtain the Physical Downlink Share Channel (PDSCH) scheduled by the PDCCH, and the PDSCH includes the RAR.
  • PDSCH Physical Downlink Share Channel
  • RAR contains: Backoff Indicator (Backoff Indicator, BI), used to indicate the backoff time of retransmission message 1; Random Access Preamble Identifier (Radom Access Preamble Identifier, RAPID), used to indicate random access preamble; timing Time Advance Group (TAG), used to adjust the uplink timing; Uplink grant (UL grant), used to indicate the uplink resource of scheduling message 3; Temporary Cell-Radio Network Temporary Identity, Temporary C - RNTI) for PDCCH (initial access) for scrambling message 4.
  • Backoff Indicator Backoff Indicator, BI
  • Random Access Preamble Identifier Random Access Preamble Identifier
  • TAG Tim Advance Group
  • UL grant Uplink grant
  • Temporary Cell-Radio Network Temporary Identity Temporary C - RNTI
  • Step 3 the terminal sends a message 3 (msg3) to the network device: scheduling transmission.
  • Message 3 is mainly used to notify the network device of the event that triggers the random access procedure. Exemplarily, if the event is an initial access random process, message 3 will carry the UE ID and establishment cause; if the event is RRC reestablishment, it will carry the connection state UE identity and establishment cause (establishment cause) .
  • Step 4 the network device sends a message 4 (msg4): a contention resolution message to the terminal.
  • Message 4 is used for conflict resolution.
  • Step 5 the terminal sends a message 5 (msg5) to the network device: the connection establishment is complete (complete).
  • Message 5 is mainly used to notify the network device that the connection establishment of the random access is completed.
  • Type 2 random access process (two-step random access process).
  • the 4-step (4-step) random access process can be combined into a 2-step (2-step) random access process.
  • the combined 2-step random access process includes message A and message B, and the relevant steps include:
  • Step 1 the terminal sends a message A (msgA) to the network device.
  • Step 2 After receiving the message A sent by the terminal, the network device sends a message B (msgB) to the terminal.
  • msgB message B
  • message A includes the contents of message 1 and message 3, that is, message A includes: random access preamble and UE ID, UE ID can be: C-RNTI, temporary C-RNTI, RA-RNTI, contactless One of the Non-Access Stratum (NAS) UE IDs.
  • message B includes the content of message 2 and message 4, that is, message B includes: a random access response and a contention resolution message.
  • the network device determines the TA value of each terminal by measuring the uplink transmission of the terminal.
  • the network device sends a timing advance command (Timing Advance Command, TAC) to the terminal through at least one of the following methods, which is used to notify the terminal of the amount of time it needs to advance the uplink transmission.
  • TAC Timing Advance Command
  • the network device determines the TA value by measuring the received preamble, and sends it to the terminal through the TAC field of the random access response (Random Access Response, RAR).
  • RAR Random Access Response
  • Adjustment of terminal TA in RRC connection state Although during the random access process, the terminal and the network device have achieved uplink synchronization, but the timing of the uplink signal arriving at the network device may change with time, so the terminal needs to be constantly updated TA to maintain uplink synchronization. If the TA of a certain terminal needs to be corrected, the network device will send a TAC to the terminal, requiring it to adjust the TA.
  • the TAC is sent to the terminal in the form of a Medium Access Control Control Element (MAC CE).
  • MAC CE Medium Access Control Control Element
  • the terminal needs to consider the impact of the TA when performing uplink transmission. Since the propagation delay in the system is relatively large, the range of the TA value is also relatively large.
  • the terminal When the terminal is scheduled to perform uplink transmission in time slot n, the terminal considers the round-trip propagation delay and transmits in advance during uplink transmission, so that when the signal arrives at the network device side, it is on the uplink time slot n of the network device side.
  • the timing relationship in the NTN system may include two situations, as shown in Fig. 3 and Fig. 4 below respectively.
  • Situation 1 is shown in FIG. 3 .
  • the downlink time slots and uplink time slots on the network device side are aligned.
  • the terminal in order to align the uplink transmission of the terminal with the uplink time slot of the network device side, the terminal needs to use a larger TA value.
  • it is also necessary to introduce a relatively large offset parameter k offset .
  • Case 2 is shown in FIG. 4 , there is an offset value between the downlink time slot and the uplink time slot on the network device side.
  • the terminal if it is desired to align the uplink transmission of the terminal with the uplink time slot of the network device side, the terminal only needs to use a smaller TA value.
  • the network device may need additional scheduling complexity to handle the corresponding scheduling timing.
  • All terminals in the NTN scenario have the Global Navigation Satellite System (GNSS) positioning capability and TA pre-compensation capability, that is, the terminal can determine the TA corresponding to the service link based on the GNSS positioning capability and the ephemeris information of the serving satellite .
  • the terminal may determine TA based on the following formula:
  • T TA (N TA +N TA,UE-Specific +N TA,common +N TA,offset ) ⁇ T C
  • N TA is updated based on the TAC issued by the network;
  • N TA UE-Specific is the TA corresponding to the service link estimated by the terminal (User Equipment, UE);
  • N TA common is the public TA broadcast by the network;
  • TA offset is a fixed offset value.
  • the DCI includes the indication information of K 0 , and the K 0 is used for Determine the time slot for transmitting the PDSCH. For example, if the scheduling DCI is received on slot n, the slot allocated for PDSCH transmission is slot
  • K 0 is determined according to the subcarrier spacing of the PDSCH
  • the ⁇ PDSCH and ⁇ PDCCH are respectively used to determine the subcarrier spacing configured for the PDSCH and the Physical Uplink Control Channel (PDCCH).
  • the value range of K 0 is 0 to 32.
  • Transmission timing of the PUSCH scheduled by the DCI when the terminal is scheduled by the DCI to transmit the PUSCH, the DCI includes indication information of K 2 , and the K 2 is used to determine the time slot for transmitting the PUSCH. For example, if the scheduling DCI is received on slot n, the slot allocated for PUSCH transmission is slot Wherein, K 2 is determined according to the subcarrier spacing of the PDSCH, and ⁇ PDSCH and ⁇ PDCCH are respectively used to determine the subcarrier spacing configured for the PUSCH and PDCCH. The value range of K 2 is 0 to 32.
  • Transmission timing of PUSCH scheduled by RAR For the time slots scheduled by RAR for PUSCH transmission, if the terminal initiates physical random access channel (Physical Random Access Channel, PRACH) transmission, the terminal receives the corresponding RAR grant message The end position of the PDSCH is in time slot n, then the terminal transmits the PUSCH in time slot n+K 2 + ⁇ , where K 2 and ⁇ are stipulated in the protocol.
  • PRACH Physical Random Access Channel
  • Hybrid Automatic Repeat request Acknowledge character (HARQ-ACK) on PUCCH: For the time slot of PUCCH transmission, if the end position of a PDSCH reception is in time slot n or a PDCCH indicating SPS PDSCH release The end position of the reception is time slot n, and the terminal should transmit the corresponding HARQ-ACK information on the PUCCH resource in time slot n+K 1 , where K 1 is the number of time slots and the timing from PDSCH to HARQ in the DCI format Indicated by the PDSCH-to-HARQ-timing-indicator (PDSCH-to-HARQ-timing-indicator) information field, or provided through the dl-DataToUL-ACK parameter.
  • K 1 0 corresponds to the last time slot of PUCCH transmission overlapping with the time slot of PDSCH reception or PDCCH reception indicating SPS PDSCH release.
  • MAC CE activation sequence When the HARQ-ACK information corresponding to the PDSCH including the MAC CE command is transmitted on time slot n, the corresponding behavior indicated by the MAC CE command and the downlink configuration assumed by the terminal should start from the time slot After the first time slot comes into effect, where, Indicates the number of time slots included in each subframe under the subcarrier spacing configuration ⁇ .
  • CSI transmission timing on PUSCH The transmission timing of CSI on PUSCH is the same as the transmission timing of DCI scheduling PUSCH transmission under normal circumstances.
  • the CSI reference resource for reporting CSI on the uplink time slot n' is determined according to a single downlink time slot nn CSI_ref , where, ⁇ DL and ⁇ UL are respectively downlink and uplink subcarrier spacing configurations. n
  • CSI_ref The value of CSI_ref depends on the type of CSI report.
  • Aperiodic SRS transmission timing If the terminal receives DCI on time slot n and triggers the transmission of aperiodic SRS, the UE transmit the aperiodic SRS in each triggered SRS resource set, where k is configured by the high layer parameter SlotOffset in each triggered SRS resource set and is determined according to the subcarrier spacing corresponding to the triggered SRS transmission , ⁇ SRS and ⁇ PDCCH are the subcarrier spacing configurations of the triggered SRS transmission and the PDCCH carrying the trigger command, respectively.
  • the PDSCH reception timing in the NR system is only affected by the timing of the downlink receiving side, and is not affected by the large round-trip transmission delay in the NTN system, so the NTN system can reuse the PDSCH reception timing in the NR system.
  • timing relationship For other timings affected by the interaction of downlink reception and uplink transmission, in order to work normally in the NTN system, or in other words, to overcome the large transmission delay in the NTN system, the timing relationship needs to be enhanced.
  • a simple solution is to introduce an offset parameter k offset into the system and apply this parameter to the relevant timing relationship.
  • the transmission timing of the PUSCH scheduled by the RAR for the time slot scheduled by the RAR for PUSCH transmission, the terminal transmits the PUSCH on the time slot n+K 2 + ⁇ +k offset .
  • the transmission timing of HARQ-ACK transmission on PUCCH For the time slot of PUCCH transmission, the UE should transmit the corresponding HARQ-ACK information on the PUCCH resource within the time slot n+K 1 +k offset .
  • MAC CE activation sequence When the HARQ-ACK information corresponding to the PDSCH including the MAC CE command is transmitted on time slot n, the corresponding behavior indicated by the MAC CE command and the downlink configuration assumed by the UE should start from the time slot
  • the first time slot after is effective, where X may be determined by the terminal capability of the NTN, and the value may not be 3.
  • the CSI reference resource for reporting CSI on the uplink time slot n' is determined according to a single downlink time slot nn CSIref -k offset .
  • Aperiodic SRS transmission timing If the terminal receives DCI on time slot n and triggers the transmission of aperiodic SRS, the UE The aperiodic SRS in each triggered SRS resource set is transmitted above.
  • the timing of uplink transmission is enhanced by introducing k offset .
  • the network device may configure cell-level k offset or satellite beam-level k offset by broadcasting.
  • the network device may configure a dedicated k offset for the terminal through radio resource control layer (Radio Resource Control, RRC) signaling or MAC.
  • RRC Radio Resource Control
  • the terminal uses the k offset configured in a broadcast manner.
  • Fig. 5 shows a flowchart of an SR triggering method provided by an exemplary embodiment of the present application. This embodiment applies this method to a terminal in an RRC connected state.
  • the terminal is a terminal supporting NTN.
  • the method includes:
  • Step 502 Trigger SR when TA reporting is triggered but the uplink resource meets the unavailable condition.
  • the terminal when a terminal in the RRC connection state triggers a TA report but the uplink resource meets the unavailable condition, the terminal triggers an SR. After the terminal triggers an SR, the SR is in a pending state (pending).
  • the uplink resource refers to the PUSCH resource used for new transmission.
  • the PUSCH resource is used to transmit data and at least one of the MAC CE reported by the TA, which is not limited in this application.
  • the situation reported by the TA includes at least one of the following situations:
  • ⁇ TA report based on network request.
  • the uplink resource meeting the unavailable condition includes at least one of the following situations:
  • the uplink resource meets the first condition
  • the uplink resource satisfies the second condition.
  • the first condition includes that there is no first uplink resource for new transmission; the second condition includes that there is a second uplink resource for new transmission, but the second uplink resource cannot accommodate the MAC CE reported by the TA.
  • the terminal triggers TA reporting, and when the terminal has no PUSCH resource for new transmission, the terminal triggers SR.
  • the terminal triggers TA to report, and when the terminal has PUSCH resources for new transmission, but the PUSCH resources cannot accommodate the MAC CE reported by TA, the terminal triggers SR.
  • the above SR is used to request scheduling of uplink resources used for TA reporting, or in other words, the above SR is used to request scheduling of PUSCH resources used for new transmission.
  • the terminal When an SR is triggered and there is a PUCCH resource available for transmitting the SR, the terminal sends the SR to the network device.
  • the network device receives the SR, the network device schedules PUSCH resources for new transmission to the terminal for the terminal to report TA.
  • the terminal in the RRC connection state triggers the SR when the TA report is triggered but the PUSCH resource meets the unavailable condition; this embodiment triggers the SR and there is an available PUCCH resources, the terminal sends an SR to the network device, and when the network device receives the SR, the network device schedules the PUSCH resource for the new transmission to the terminal, so that the terminal can report the TA in time, avoiding the occurrence of TA being greater than the offset parameter k offset value, so as to ensure that the terminal can perform normal uplink transmission.
  • Fig. 6 shows a flowchart of an SR triggering method provided by an exemplary embodiment of the present application. This embodiment applies this method to a terminal in an RRC connected state.
  • the terminal is a terminal supporting NTN.
  • the method includes:
  • Step 602 Trigger SR when TA reporting is triggered, the uplink resource meets the unavailable condition and the third condition is met.
  • the terminal triggers SR when the TA report is triggered, the uplink resource meets the unavailable condition and the third condition is met; wherein, the third condition includes that the difference between K offset and TA is less than or equal to the first threshold, and k offset is used Based on the offset parameter introduced by the enhanced scheduling relationship, TA is the TA currently used by the terminal.
  • the first threshold is configured by the network device to the terminal through system broadcast; or, the first threshold is configured by the network device to the terminal through dedicated signaling; or, the first threshold is predefined by the communication protocol; this application The embodiment does not limit this, and the value of the first threshold is greater than zero.
  • the dedicated signaling is the signaling that only the terminal (or terminal group) can correctly decode and receive.
  • the uplink resource refers to the PUSCH resource used for new transmission.
  • the PUSCH resource is used to transmit data and at least one of the MAC CE reported by the TA, which is not limited in this application.
  • the situation reported by the TA includes at least one of the following situations:
  • the uplink resource meeting the unavailable condition includes at least one of the following situations:
  • the uplink resource satisfies the second condition.
  • the first condition includes that there is no first uplink resource for new transmission; the second condition includes that there is a second uplink resource for new transmission, but the second uplink resource cannot accommodate the MAC CE reported by the TA.
  • the terminal when the terminal triggers TA reporting, the terminal has no PUSCH resources for new transmission and the terminal satisfies the third condition, the terminal triggers SR.
  • the terminal triggers TA reporting, and the terminal has PUSCH resources for new transmission, but the PUSCH resources cannot accommodate the MAC CE reported by TA and the terminal triggers SR when the terminal meets the third condition.
  • the terminal When an SR is triggered and there is a PUCCH resource available for transmitting the SR, the terminal sends the SR to the network device.
  • the network device When the network device receives the SR, the network device may schedule PUSCH resources for new transmission to the terminal for the terminal to report TA.
  • the terminal in the RRC connection state triggers TA reporting, the uplink resource meets the unavailable condition and the third condition is met, the SR is triggered.
  • the terminal sends the SR to the network device, and when the network device receives the SR, the network device schedules the PUSCH resources for the new transmission to the terminal, so that the terminal can report the TA in time, avoiding the occurrence of TA being greater than the partial Shift the value of the parameter k offset , so as to ensure that the terminal can perform normal uplink transmission.
  • Fig. 7 shows a flowchart of an SR triggering method provided by an exemplary embodiment of the present application. The method includes:
  • Step 701 The terminal receives configuration information.
  • the terminal receives the first configuration information, and the first configuration information is used to configure the corresponding SR ID reported by the TA, where the SR ID is an ID corresponding to the SR configuration.
  • the network device can configure the SR configuration corresponding to the TA report for the terminal, that is, in this configuration mode, the TA report corresponds to a dedicated SR configuration.
  • the network device configures the TA for the terminal to report the corresponding SR ID, and the SR ID corresponds to an SR configuration.
  • the terminal receives second configuration information, where the second configuration information is used to configure the SR configuration.
  • the second configuration information is used to configure the SR configuration.
  • any SR configuration that is, the second configuration information
  • This step 701 is an optional step.
  • the network device may configure TA for the terminal to report the corresponding SR configuration or general SR configuration, or the network device may not configure TA for the terminal to report the corresponding SR configuration or general SR configuration.
  • Step 702 Trigger SR when the TA report is triggered but the PUSCH resource used to transmit the TA report satisfies the unavailable condition.
  • the terminal in the RRC connected state triggers the SR when the TA report is triggered but the PUSCH resource used to transmit the TA report satisfies the unavailable condition.
  • the terminal in the RRC connected state triggers the SR when the TA report is triggered, the uplink resource meets the unavailable condition and the third condition is met.
  • the SR is in a pending state.
  • Step 703 When the SR is in the pending state, if the cancellation condition is met, cancel the SR.
  • the terminal cancels the SR when the cancellation condition is met.
  • the SR is canceled when the SR is in a pending state and the terminal meets the cancellation condition.
  • canceling the cancellation condition in the SR includes at least one of the following conditions:
  • the terminal When the terminal completes the TA reporting, that is, the terminal transmits a Medium Access Control Protocol Data Unit (MAC PDU), the MAC PDU includes the TA reporting MAC CE, after the terminal completes the TA reporting, The terminal cancels the SR; or, when the terminal receives the reconfiguration signaling for reconfiguring k offset , the terminal cancels the SR; or, the terminal receives the reconfiguration signaling for reconfiguring k offset , and the reconfigured k offset If the difference with the TA is greater than or equal to the second threshold, the terminal cancels the SR.
  • MAC PDU Medium Access Control Protocol Data Unit
  • the second threshold is configured by the network device to the terminal through system broadcast; or, the second threshold is configured by the network device to the terminal through dedicated signaling; or, the second threshold is predefined by the communication protocol; this application The embodiment does not limit this, and the value of the second threshold is greater than zero or equal to zero.
  • Step 704 When the SR is in the pending state, if the trigger condition is met, trigger the random access procedure.
  • the terminal When the SR is in the pending state, the terminal triggers a random access procedure when the trigger condition is met. After the random access procedure is triggered, the terminal may reuse the common K offset broadcast by the network, or the network device may enable the terminal to complete TA reporting through the random access procedure.
  • the SR is in a pending state, and the random access process is triggered when the terminal meets the trigger condition.
  • the SR is in a pending state, and when the trigger condition is met, the terminal triggers the random access process.
  • the trigger condition includes at least one of the following conditions:
  • the terminal has no PUCCH resource for transmitting the SR;
  • the terminal receives first configuration information, the first configuration information is used to configure the SR ID corresponding to the TA report, and the SR ID is the ID corresponding to the SR configuration. Based on the SR configuration corresponding to the SR ID reported by the TA, determine the PUCCH resource used to transmit the SR; and send the SR through the PUCCH resource. In the case that the corresponding SR ID is not configured for the TA to report, it is determined that there is no PUCCH resource for transmitting the SR.
  • the network device can configure the SR ID corresponding to the TA report for the terminal, that is, in this configuration mode, the TA report corresponds to a dedicated SR configuration.
  • the network device configures the TA for the terminal to report the corresponding SR ID, and the SR ID corresponds to an SR configuration.
  • the PUCCH resource in the SR configuration corresponding to the SR ID is determined as the PUCCH resource used to transmit the SR, and the terminal sends the SR through the PUCCH resource.
  • the network device When the network device does not configure the TA to report the corresponding SR ID for the terminal, it is determined that there is no PUCCH resource for transmitting SR.
  • the TA report of the terminal triggers the SR, the random access process is triggered.
  • the random access process is Triggered when there is no uplink resource for SR transmission.
  • step 701 the terminal receives second configuration information, where the second configuration information is used to configure an SR configuration. Based on the SR configuration, determine the PUCCH resource used to transmit the SR; send the SR through the PUCCH resource. If no SR configuration is configured, it is determined that there is no PUCCH resource for transmitting SR.
  • the network device configures the SR configuration for the terminal.
  • the PUCCH resource used to transmit the SR is determined based on the SR configuration, and the terminal sends the SR through the PUCCH resource.
  • the number of SR transmissions corresponding to the SR has reached the maximum number of SR transmissions, and the terminal triggers a random access process.
  • the maximum number of SR transmissions can use a default value or network configuration. Not limited.
  • Step 705 Before the end of the random access process, if the stop condition is satisfied, stop the random access process.
  • the terminal triggers the random access procedure when there is no PUCCH resource for transmitting the SR, and the terminal stops the random access procedure when the stop condition is satisfied.
  • the stop conditions met by the terminal to stop the random access process include at least one of the following conditions:
  • the terminal receives the uplink scheduling grant, and uses the uplink resource scheduled by the uplink scheduling grant to transmit the TA report, and the terminal stops the random access process;
  • the terminal receives the uplink scheduling grant, and the uplink scheduling grant is not indicated in message 2 or message B, the terminal uses the uplink scheduling grant to transmit a MAC PDU, and the MAC PDU includes the MAC CE reported by the TA, then the terminal Stop the random access procedure. Or, the terminal receives reconfiguration signaling for reconfiguring k offset , and the terminal stops the random access process; or, the terminal receives reconfiguration signaling for reconfiguring k offset , and the distance between k offset and TA If the difference is greater than or equal to the third threshold, the terminal stops the random access process.
  • the third threshold is configured by the network device to the terminal through system broadcast; or, the third threshold is configured by the network device to the terminal through dedicated signaling; or, the third threshold is predefined by the communication protocol; this application The embodiment does not limit this, and the value of the third threshold is greater than zero or equal to zero.
  • a terminal in the RRC connection state triggers a TA report but has no PUSCH resources for new transmissions, or the terminal has PUSCH resources for new transmissions, but the PUSCH resources cannot accommodate the MAC reported by TA.
  • the terminal has no PUSCH resources for new transmission and the difference between k offset and TA is less than or equal to the first threshold, or, the terminal has PUSCH resources for new transmission, but the
  • the terminal triggers an SR, and the terminal applies to the network device for a new PUSCH resource by sending the SR, for The terminal performs TA reporting.
  • the terminal When the SR is in the pending state, when the terminal completes the TA report, or, when the terminal receives the reconfiguration signaling for reconfiguring k offset , or, when the terminal receives the reconfiguration signaling k offset reconfiguration signaling and the terminal cancels the SR when the difference between the reconfigured k offset and TA is greater than or equal to the second threshold.
  • the terminal When the SR is in the pending state, the terminal triggers a random access procedure when there is no PUCCH resource for transmitting the SR, or when the number of SR transmissions corresponding to the SR has reached the maximum number of SR transmissions.
  • the terminal When the terminal receives the uplink scheduling grant and uses the uplink resource scheduled by the uplink scheduling grant to transmit the TA report, or the terminal receives the reconfiguration signaling for reconfiguring k offset , or the terminal receives the reconfiguration signaling for reconfiguration
  • the reconfiguration signaling of k offset is configured, and when the difference between k offset and TA is greater than or equal to the third threshold, the random access process is stopped.
  • the SR is triggered and the PUCCH resource in the terminal is used to send the SR to the network device.
  • the network device schedules the PUSCH resource for the new transmission to the terminal, so that the terminal can report the SR in a timely manner.
  • TA so as to ensure that the terminal can perform normal uplink transmission.
  • Fig. 8 shows a flowchart of a random access method provided by an exemplary embodiment of the present application. This embodiment applies this method to a terminal in an RRC connected state.
  • the terminal is a terminal supporting NTN.
  • the method includes:
  • Step 802 Trigger a random access procedure if the trigger condition is met.
  • a terminal in the RRC connection state triggers a random access process when the trigger condition is met.
  • the trigger condition includes at least one of the following:
  • the TA of the terminal exceeds k offset ;
  • the terminal receives the k offset configured by the network device.
  • the terminal compares the currently used TA value with the currently used k offset , and when the currently used TA value of the terminal is less than or equal to the k offset currently used by the terminal, the terminal can indicate normal uplink transmission for resource allocation for uplink transmission.
  • the terminal uses the public k offset to send message 3 during the random access process;
  • the public k offset is the cell-level public k offset or the beam-level public k offset of the network broadcast.
  • the terminal Before the terminal receives the dedicated k offset configured by the network device for the terminal, the terminal always uses the public k offset , that is, the terminal always uses the network broadcast The common k offset at the cell level or the common k offset at the beam level.
  • the terminal compares the currently used TA value with the currently used k offset , and when the difference between the currently used k offset of the terminal and the currently used TA is less than or equal to the fourth threshold Next, the terminal triggers a random access procedure.
  • the fourth threshold is configured by the network device to the terminal through system broadcast; or, the fourth threshold is configured by the network device to the terminal through dedicated signaling; or, the fourth threshold is predefined by the communication protocol; this application The embodiment does not limit this, and the value of the fourth threshold is greater than zero or equal to zero.
  • the terminal in the RRC connection state triggers the random access process when the trigger condition is met; this embodiment triggers the random access process so that the terminal can reuse the valid and available k offset , thereby ensuring that the terminal can perform Normal uplink transmission.
  • Fig. 9 shows a flowchart of a random access method provided by an exemplary embodiment of the present application. This embodiment applies this method to a terminal in an RRC connected state.
  • the terminal is a terminal supporting NTN.
  • the method includes:
  • Step 902 Trigger a random access procedure if the trigger condition is met.
  • the terminal in the RRC connection state triggers the random access process when the trigger condition is met;
  • the trigger condition includes: the TA of the terminal exceeds k offset , or the difference between k offset and TA is less than or equal to the fourth threshold.
  • the terminal receives the k offset configured by the network device.
  • the terminal compares the currently used TA value with the currently used k offset , and when the currently used TA value of the terminal is less than or equal to the k offset currently used by the terminal, the terminal can indicate normal uplink transmission for resource allocation for uplink transmission.
  • the terminal compares the currently used TA value with the currently used k offset , and when the difference between the currently used k offset of the terminal and the currently used TA is less than or equal to the fourth threshold Next, the terminal triggers a random access procedure.
  • Step 904 Stop the random access process if the stopping condition is met.
  • the terminal stops the random access process when a stop condition is met.
  • the stop conditions met by the terminal to stop the random access process include at least one of the following conditions:
  • the terminal receives the uplink scheduling grant, and uses the uplink resource scheduled by the uplink scheduling grant to transmit the TA report, and the terminal stops the random access process;
  • the terminal receives the uplink scheduling grant, and the uplink scheduling grant is not indicated in message 2 or message B, the terminal uses the uplink scheduling grant to transmit a MAC PDU, and the MAC PDU includes the MAC CE reported by the TA, then the terminal Stop the random access procedure. Or, the terminal receives reconfiguration signaling for reconfiguring k offset , and the terminal stops the random access process; or, the terminal receives reconfiguration signaling for reconfiguring k offset , and the distance between k offset and TA If the difference is greater than or equal to the fifth threshold, the terminal stops the random access process.
  • the fifth threshold is configured by the network device to the terminal through system broadcast; or, the fifth threshold is configured by the network device to the terminal through dedicated signaling; or, the fifth threshold is predefined by the communication protocol; this application The embodiment does not limit this, and the value of the fifth threshold is greater than zero or equal to zero.
  • the terminal in the RRC connection state triggers the random access process when the trigger condition is met; before the end of the random access process, the terminal stops the random access process when the stop condition is met.
  • the terminal can reuse the effective K offset to avoid the value of TA greater than k offset , thereby ensuring that the terminal can perform normal uplink transmission.
  • Fig. 10 shows a flowchart of an SR triggering method provided by an exemplary embodiment of the present application. This embodiment applies this method to a terminal in an RRC connected state.
  • the terminal is a terminal supporting NTN.
  • the method comprises the steps of:
  • Step 1001 The terminal receives the configuration information sent by the network device.
  • Step 1002 the terminal triggers TA reporting.
  • the terminal receives the network device configuration information, and based on the network device configuration information, the terminal triggers the TA to report.
  • the situation reported by TA includes at least one of the following situations:
  • Step 1003 judging whether the uplink resource satisfies the unavailable condition or whether the uplink resource satisfies the unavailable condition and whether the third condition is satisfied at the same time.
  • the terminal triggers the TA report, and when the uplink resource meets the available condition, execute step 1004; when the terminal triggers the TA report, the uplink resource meets the unavailable condition and satisfies the third condition, execute step 1005; wherein, the third condition includes k
  • the difference between offset and TA is less than or equal to the first threshold, k offset is an offset parameter introduced for enhancing the scheduling relationship, and TA is the TA currently used by the terminal.
  • Uplink resources refer to PUSCH resources used for new transmission.
  • Step 1004 Complete TA reporting.
  • the terminal triggers the TA report, and completes the TA report when the PUSCH resources meet the available conditions.
  • Step 1005 Trigger a scheduling request SR.
  • the terminal When the terminal triggers TA reporting, the PUSCH resource meets the unavailable condition and the third condition is met, the terminal triggers SR.
  • Step 1006 the terminal judges whether there is uplink resource for transmitting SR.
  • the terminal It is judged whether the terminal has uplink resources for transmitting SR, and the uplink resources for transmitting SR refer to PUCCH resources for transmitting SR. If the terminal has PUCCH resources for transmitting SR, perform step 1007; if the terminal does not have PUCCH resources for transmitting SR, perform step 1010.
  • Step 1007 The number of SR transmissions does not reach the maximum number of SR transmissions.
  • step 1010 When the terminal has PUCCH resources for transmitting SR, it is judged whether the number of SR transmissions reaches the maximum number of SR transmissions, and if the number of SR transmissions reaches the maximum number of SR transmissions, step 1010 is performed; When the maximum number of SR transmissions is reached, step 1008 is executed.
  • Step 1008 Send SR.
  • the terminal When the terminal has PUCCH resources for transmitting SR and the number of SR transmissions does not reach the maximum number of SR transmissions, the terminal sends SR.
  • Step 1009 Cancel the triggered SR if the cancellation condition is met.
  • the terminal After the terminal sends the SR, the terminal cancels the triggered SR when the cancellation condition is satisfied.
  • Cancellation conditions in the triggered SR include at least one of the following conditions:
  • the terminal When the terminal completes the TA report, that is, the terminal transmits a MAC PDU, which includes the TA report MAC CE, after the terminal completes the TA report, the terminal cancels the SR; or, when the terminal receives the k offset for reconfiguration The terminal cancels the SR; or, when the terminal receives the reconfiguration signaling for reconfiguring k offset , and the difference between the reconfigured k offset and TA is greater than or equal to the second threshold of the terminal, the terminal cancels the SR Sr.
  • a MAC PDU which includes the TA report MAC CE
  • Step 1010 Trigger a random access procedure.
  • the terminal When the terminal has no PUCCH resource for transmitting SR, or when the number of SR transmissions reaches the maximum number of SR transmissions, the terminal triggers a random access procedure.
  • Step 1011 Stop the ongoing random access process if the stop condition is met.
  • the terminal Before the end of the random access process, the terminal stops the random access process when the stop condition is met.
  • the random access is triggered because the terminal does not have valid PUCCH resources for transmitting the SR.
  • the stop conditions met by the terminal to stop the random access process include at least one of the following conditions:
  • the terminal receives the uplink scheduling grant, and uses the uplink resource scheduled by the uplink scheduling grant to transmit the TA report, and the terminal stops the random access process;
  • the terminal receives the uplink scheduling grant, and the uplink scheduling grant is not indicated in message 2 or message B, the terminal uses the uplink scheduling grant to transmit a MAC PDU, and the MAC PDU includes the MAC CE reported by the TA, then the terminal Stop the random access procedure. Or, the terminal receives reconfiguration signaling for reconfiguring k offset , and the terminal stops the random access process; or, the terminal receives reconfiguration signaling for reconfiguring k offset , and the distance between k offset and TA If the difference is greater than or equal to the third threshold, the terminal stops the random access process.
  • the third threshold is configured by the network device to the terminal through system broadcast; or, the third threshold is configured by the network device to the terminal through dedicated signaling; or, the third threshold is predefined by the communication protocol; this application The embodiment does not limit this, and the value of the third threshold is greater than zero or equal to zero.
  • the second threshold and the third threshold may be the same configuration parameter, which is not limited in this embodiment of the present application.
  • the terminal when a terminal in the RRC connection state receives network device configuration information, the terminal triggers TA reporting but triggers SR when the PUSCH resource used for new transmission meets the unavailable condition; In the case of PUCCH resources, or when the number of SR transmissions reaches the maximum number of SR transmissions, a random access process is triggered; when the stop condition is met, the terminal stops the random access process.
  • the terminal by sending an SR, the terminal can report the TA in time, thereby ensuring that the terminal can perform normal uplink transmission.
  • Fig. 11 shows a flowchart of a random access method provided by an exemplary embodiment of the present application. This embodiment applies this method to a terminal in an RRC connected state.
  • the terminal is a terminal supporting NTN.
  • the method comprises the steps of:
  • Step 1101 The terminal receives the offset parameter configured by the network device.
  • the terminal receives k offset configured by the network device.
  • Step 1102 The terminal compares the currently used k offset based on the current TA.
  • the terminal compares the currently used TA value with the currently used k offset , and when the currently used TA value of the terminal is less than or equal to the k offset currently used by the terminal, the terminal can indicate normal uplink transmission for resource allocation for uplink transmission.
  • Step 1103 Trigger a random access procedure if the trigger condition is met.
  • the trigger condition includes: the TA of the terminal exceeds k offset , or the difference between k offset and TA is less than or equal to the fourth threshold.
  • the terminal compares the currently used TA value with the currently used k offset , and when the difference between the currently used k offset and the currently used TA is less than or equal to the fourth threshold, the terminal triggers a random access procedure.
  • the fourth threshold is configured by the network device to the terminal through system broadcast; or, the fourth threshold is configured by the network device to the terminal through dedicated signaling; or, the fourth threshold is predefined by the communication protocol; this application The embodiment does not limit this, and the value of the fourth threshold is greater than zero or equal to zero.
  • Step 1104 Stop the ongoing random access process if the stop condition is met.
  • the terminal Before the end of the random access process, the terminal stops the ongoing random access process when the stop condition is met.
  • the stop conditions met by the terminal to stop the random access process include at least one of the following conditions:
  • the terminal receives the uplink scheduling grant, and uses the uplink resource scheduled by the uplink scheduling grant to transmit the TA report, and the terminal stops the random access process;
  • the terminal receives the uplink scheduling grant, and the uplink scheduling grant is not indicated in message 2 or message B, the terminal uses the uplink scheduling grant to transmit a MAC PDU, and the MAC PDU includes the MAC CE reported by the TA, then the terminal Stop the random access procedure. Or, the terminal receives reconfiguration signaling for reconfiguring k offset , and the terminal stops the random access process; or, the terminal receives reconfiguration signaling for reconfiguring k offset , and the distance between k offset and TA If the difference is greater than or equal to the fifth threshold, the terminal stops the random access process.
  • the third threshold and the fifth threshold may be the same configuration parameter, which is not limited in this embodiment of the present application.
  • the terminal in the RRC connection state compares the currently used TA value with the currently used k offset , and triggers the random access process if the trigger condition is met; before the end of the random access process, the terminal When the stopping condition is met, the random access process is stopped.
  • the terminal can reuse the valid and available k offset , thereby ensuring that the terminal can perform normal uplink transmission.
  • Fig. 12 shows a flowchart of an information configuration method provided by an exemplary embodiment of the present application.
  • this method is applied to network equipment.
  • the network device is a network device supporting NTN.
  • the method comprises the steps of:
  • Step 1202 Send the SR configuration to the terminal, and the SR configuration is used to configure the TA of the terminal to report the corresponding SR configuration.
  • the network device sends the SR configuration to the terminal, and the SR configuration is used to configure the TA of the terminal to report the corresponding SR configuration.
  • the network device sends the first configuration information to the terminal, where the first configuration information is used to configure the TA to report a corresponding SRID, and the SRID is an ID corresponding to the SR configuration.
  • the network device configures the SR configuration corresponding to the TA report for the terminal, that is, in this configuration mode, the TA report corresponds to a dedicated SR configuration.
  • the network device configures the TA to report the corresponding SR ID for the terminal, and the SR ID corresponds to an SR configuration.
  • the network device sends second configuration information to the terminal, where the second configuration information is used to configure the SR configuration.
  • the second configuration information is used to configure the SR configuration.
  • the network device sends the SR configuration to the terminal, and the SR configuration is used to configure the TA of the terminal to report the corresponding SR configuration.
  • the network device sends the SR configuration to the terminal, and when the network device sends the first configuration information to the terminal, based on the SR configuration corresponding to the SR ID reported by the TA, determine the PUCCH resource used to transmit the SR; and send the SR through the PUCCH resource.
  • the network device sends the second configuration information to the terminal, based on the SR configuration, determine the PUCCH resource used to transmit the SR; and send the SR through the PUCCH resource.
  • the terminal can report the TA in time, thereby ensuring that the terminal can perform normal uplink transmission.
  • Fig. 13 shows a flowchart of an information configuration method provided by an exemplary embodiment of the present application.
  • this method is applied to network equipment.
  • the network device is a network device supporting NTN.
  • the method comprises the steps of:
  • Step 1302 Send the threshold to the terminal.
  • the network device configures the first threshold for the terminal.
  • the network device configures the first threshold to the terminal through system broadcast; or, the network device configures the first threshold to the terminal through dedicated signaling;
  • the first threshold is the difference threshold between the offset parameter k offset and TA used to trigger SR when the uplink resource meets the unavailable condition after the terminal triggers TA reporting, the first threshold is used to trigger SR, k offset is an offset parameter introduced to enhance the scheduling relationship, and TA is the TA currently used by the terminal.
  • the terminal triggers the TA report the uplink resource meets the unavailable condition and the difference between the offset parameter k offset and the TA is less than or equal to the first threshold, the terminal triggers the SR.
  • This embodiment of the present application does not limit this, and the value of the first threshold is greater than zero.
  • the network device configures the second threshold for the terminal.
  • the network device configures the second threshold to the terminal through system broadcast; or, the network device configures the second threshold to the terminal through dedicated signaling;
  • the second threshold is the difference threshold between the offset parameter k offset and TA, the second threshold is used to cancel the SR, k offset is the offset parameter introduced for enhancing the scheduling relationship, and TA is the terminal currently used TA, when the terminal receives reconfiguration signaling for reconfiguring the offset parameter k offset , and the difference between the offset parameter k offset and TA is greater than or equal to the second threshold, the terminal cancels the SR.
  • the network device configures the third threshold for the terminal.
  • the network device configures the third threshold to the terminal through system broadcast; or, the network device configures the third threshold to the terminal through dedicated signaling;
  • the third threshold is the difference threshold between the offset parameter k offset and TA, and the third threshold is used to stop the first random access procedure.
  • the first random access procedure is triggered when the pending SR meets the trigger condition , k offset is the offset parameter introduced to enhance the scheduling relationship, TA is the TA currently used by the terminal, and the terminal receives the reconfiguration signaling for reconfiguring the offset parameter k offset , and the offset
  • the terminal stops the first random access procedure.
  • the network device configures the fourth threshold for the terminal.
  • the network device configures the fourth threshold to the terminal through system broadcast; or, the network device configures the fourth threshold to the terminal through dedicated signaling;
  • the fourth threshold is the difference threshold between the offset parameter k offset and TA, the fourth threshold is used to trigger the second random access procedure, k offset is the offset parameter introduced for enhancing the scheduling relationship, and TA is the The TA currently used by the terminal, when TA exceeds k offset , or the difference between k offset and TA is less than or equal to the fourth threshold, the terminal triggers the second random access procedure.
  • the network device configures the fifth threshold for the terminal.
  • the network device configures the fifth threshold to the terminal through system broadcast; or, the network device configures the fifth threshold to the terminal through dedicated signaling;
  • the fifth threshold is the difference threshold between the offset parameter k offset and TA, the fifth threshold is used to stop the second random access process, k offset is used to enhance the offset parameter introduced by the scheduling relationship, and TA is the The TA currently used by the terminal, when TA exceeds k offset , or the difference between k offset and TA is greater than or equal to the fifth threshold, the terminal stops the second random access process.
  • the second threshold and the third threshold may be the same configuration parameter; the third threshold and the fifth threshold may also be the same configuration parameter, which is not limited in this embodiment of the present application.
  • the configuration process of the second threshold and the third threshold in this embodiment may be combined into one configuration process.
  • the configuration process of the third threshold and the fifth threshold in this embodiment may be combined into one configuration process.
  • the network device configures the first threshold to the terminal through system broadcast or dedicated signaling, and the terminal triggers TA reporting, the uplink resource meets the unavailable condition, and the difference between the offset parameter k offset and TA is less than or equal to the first threshold, the terminal triggers SR.
  • the network device configures the second threshold to the terminal through system broadcast or dedicated signaling, and the terminal receives the reconfiguration signaling for reconfiguring the offset parameter k offset , and the difference between the offset parameter k offset and TA When the value is greater than or equal to the second threshold, the terminal cancels the SR.
  • the network device configures the third threshold to the terminal through system broadcast or dedicated signaling, and the terminal receives the reconfiguration signaling for reconfiguring the offset parameter k offset , and the difference between the offset parameter k offset and TA
  • the terminal stops the first random access procedure.
  • the network device configures the fourth threshold to the terminal through system broadcast or dedicated signaling.
  • TA exceeds k offset or the difference between k offset and TA is less than or equal to the fourth threshold
  • the terminal triggers the second random access process.
  • the network device configures the fifth threshold to the terminal through system broadcast or dedicated signaling.
  • the terminal stops the second random access process.
  • an embodiment of the present application provides an SR triggering device, which can be implemented as all or part of a terminal. Or can be applied in the terminal.
  • the terminal may be a terminal supporting NTN.
  • the unit includes:
  • the triggering module 1402 is configured to trigger a scheduling request SR when the TA report is triggered but the uplink resource meets the unavailable condition; wherein, the uplink resource is a PUSCH resource for uplink new transmission.
  • the TA reporting includes at least one of the following:
  • the uplink resource meeting the unavailable condition includes:
  • the uplink resource satisfies the first condition; or, the uplink resource satisfies the second condition;
  • the first condition includes that there is no first uplink resource for new transmission; the second condition includes that there is a second uplink resource for new transmission, but the second uplink resource cannot accommodate the MAC CE reported by the TA.
  • the triggering module 1402 is further configured to trigger SR when triggering TA reporting, uplink resources satisfying the unavailable condition and satisfying the third condition;
  • the third condition includes that the difference between k offset and TA is less than or equal to the first threshold, k offset is an offset parameter introduced for enhancing the scheduling relationship, and TA is the TA currently used by the terminal.
  • the first threshold is configured by the network device to the terminal through system broadcast; or, the first threshold is configured by the network device to the terminal through dedicated signaling; or, the first threshold is configured by the communication protocol Defined.
  • the triggering module 1402 when the SR is in a pending state, is configured to cancel the SR when a cancellation condition is met.
  • the cancellation conditions include:
  • TA reporting is completed; or, the reconfiguration signaling for reconfiguring k offset is received; or, the reconfiguration signaling for reconfiguring k offset is received, and the difference between k offset and TA is greater than or equal to the first Two thresholds.
  • the second threshold is configured by the network device to the terminal through system broadcast; or, the second threshold is configured by the network device to the terminal through dedicated signaling; or, the second threshold is configured by the communication protocol Defined.
  • the triggering module 1402 is further configured to trigger a random access procedure when a trigger condition is met.
  • the trigger condition includes: there is no PUCCH resource for transmitting the SR; or, the number of SR transmissions corresponding to the SR has reached the maximum number of SR transmissions.
  • the triggering module is further configured to receive first configuration information, where the first configuration information is used to configure the corresponding SR ID reported by the TA, and the SR ID is an ID corresponding to the SR configuration.
  • the triggering module 1402 is also configured to determine the PUCCH resource used to transmit the SR based on the SR configuration corresponding to the SR ID reported by the TA;
  • SR is sent through PUCCH resource.
  • the triggering module 1402 is further configured to determine that there is no PUCCH resource for transmitting the SR when the TA is not configured to report the corresponding SR ID.
  • the triggering module 1402 is further configured to receive second configuration information, where the second configuration information is used to configure the SR configuration.
  • the triggering module 1402 is also configured to determine the PUCCH resource used for transmitting the SR based on the SR configuration;
  • SR is sent through PUCCH resource.
  • the triggering module 1402 is further configured to determine that there is no PUCCH resource for transmitting an SR when no SR configuration is configured.
  • the triggering module 1402 is further configured to stop the random access process when the stop condition is met.
  • the random access procedure is triggered when there is no PUCCH resource for transmitting SR.
  • the stopping conditions include:
  • the uplink scheduling grant is received, and the uplink resources scheduled by the uplink scheduling grant are used to transmit the TA report; or, the reconfiguration signaling for reconfiguring k offset is received; or, the reconfiguration signaling for reconfiguring k offset is received , and the difference between k offset and TA is greater than or equal to the third threshold.
  • the uplink scheduling grant is received and the TA report is transmitted using the uplink resource scheduled by the uplink scheduling grant, including:
  • An uplink scheduling grant is received, and the uplink scheduling grant is not indicated in message 2 or message B; the terminal uses the uplink scheduling grant to transmit a MAC PDU, and the MAC PDU includes the MAC CE reported by the TA.
  • the third threshold is configured by the network device through the system broadcast terminal; or, the third threshold is configured by the network device to the terminal through dedicated signaling; or, the third threshold is predefined by the communication protocol of.
  • the apparatus is applied to an NTN scenario.
  • an embodiment of the present application provides a random access device, which can be implemented as all or part of a terminal. Or can be applied in the terminal.
  • the terminal may be a terminal supporting NTN.
  • the unit includes:
  • An access module 1502 configured to trigger a random access process when the trigger condition is met
  • the trigger condition includes: the TA of the terminal exceeds k offset , or the difference between k offset and TA is less than or equal to the fourth threshold.
  • triggering a random access process includes:
  • the public k offset is a cell-level public k offset or a beam-level public k offset broadcast by the network.
  • the fourth threshold is configured by the network device to the terminal through system broadcast; or, the fourth threshold is configured by the network device to the terminal through dedicated signaling; or, the fourth threshold is configured by the communication protocol Defined.
  • the access module 1502 is further configured to stop the random access process when the stop condition is met.
  • the stopping conditions include:
  • the uplink scheduling grant is received, and the uplink resource scheduled by the uplink scheduling grant is used to transmit the TA report data; or, the reconfiguration signaling for reconfiguring k offset is received; or, the reconfiguration for reconfiguring k offset is received signaling, and the difference between k offset and TA is greater than or equal to the fifth threshold.
  • the uplink scheduling grant is received and the TA report is transmitted using the uplink resource scheduled by the uplink scheduling grant, including:
  • An uplink scheduling grant is received, and the uplink scheduling grant is not indicated in message 2 or message B; the terminal uses the uplink scheduling grant to transmit a MAC PDU, and the MAC PDU includes the MAC CE reported by the TA.
  • the apparatus is applied to an NTN scenario.
  • an embodiment of the present application provides an information configuration device, which can be implemented as all or part of a network device. Or it can be applied in network equipment.
  • the network device may be a network device supporting NTN.
  • the unit includes:
  • the sending module is configured to send the SR configuration to the terminal, and the SR configuration is used to configure the timing of the terminal to report the corresponding SR configuration in advance of the TA.
  • the sending module 1602 is further configured to configure first configuration information, where the first configuration information is used to configure the SR ID corresponding to the TA report, and the SR ID is an ID corresponding to the SR configuration.
  • the sending module 1602 is further configured to send first configuration information, where the first configuration information is used to configure the SR ID corresponding to the TA report, and the SR ID is an ID corresponding to the SR configuration.
  • the sending module 1602 is further configured to configure the first threshold to the terminal through system broadcast; or configure the first threshold to the terminal through dedicated signaling;
  • the first threshold is the difference threshold between the offset parameter k offset and TA for triggering SR, the first threshold is used for triggering SR, and the k offset is used to enhance the offset introduced by the scheduling relationship shift parameter, the TA is the TA currently used by the terminal.
  • the sending module 1602 is further configured to configure the second threshold to the terminal through system broadcast; or configure the second threshold to the terminal through dedicated signaling;
  • the second threshold is the difference threshold between the offset parameter k offset and TA, the second threshold is used to cancel SR, the k offset is an offset parameter introduced for enhancing the scheduling relationship, the TA is the TA currently used by the terminal.
  • the sending module 1602 is further configured to configure the third threshold to the terminal through system broadcast; or configure the third threshold to the terminal through dedicated signaling;
  • the third threshold is the difference threshold between the offset parameter k offset and TA, the third threshold is used to stop the first random access procedure, the first random access procedure is in the pending state Triggered when the SR satisfies the trigger condition, the k offset is an offset parameter introduced to enhance the scheduling relationship, and the TA is the TA currently used by the terminal.
  • the sending module 1602 is further configured to configure the fourth threshold to the terminal through system broadcast; or configure the fourth threshold to the terminal through dedicated signaling;
  • the fourth threshold is the difference threshold between the offset parameter k offset and TA, the fourth threshold is used to trigger the second random access procedure, and the k offset is used to enhance the offset introduced by the scheduling relationship shift parameter, the TA is the TA currently used by the terminal.
  • the sending module 1602 is further configured to configure the fifth threshold to the terminal through system broadcast; or configure the fifth threshold to the terminal through dedicated signaling;
  • the fifth threshold is the difference threshold between the offset parameter k offset and TA, the fifth threshold is used to stop the second random access process, k offset is the offset parameter introduced for enhancing the scheduling relationship, and TA is the terminal The currently used TA.
  • FIG. 17 shows a schematic structural diagram of a communication device (terminal or network device) provided by an exemplary embodiment of the present application.
  • the communication device includes: a processor 1701 , a receiver 1702 , a transmitter 1703 , a memory 1704 and a bus 1705 .
  • the processor 1701 includes one or more processing cores, and the processor 1701 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1702 and the transmitter 1703 can be realized as a communication component, and the communication component can be a communication chip.
  • the memory 1704 is connected to the processor 1701 through a bus 1705 .
  • the memory 1704 may be used to store at least one instruction, and the processor 1701 is used to execute the at least one instruction, so as to realize various steps of the reporting method and receiving method of timing advance in NTN mentioned in the above method embodiments.
  • volatile or non-volatile storage devices include but not limited to: magnetic or optical disks, electrically erasable and programmable Electrically-Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random Access Memory (SRAM), Read-Only Memory (Read-Only Memory, ROM), magnetic memory, flash memory, programmable read-only memory (Programmable Read-Only Memory, PROM).
  • EEPROM Electrically-Erasable Programmable Read Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • SRAM Static Random Access Memory
  • Read-Only Memory Read-Only Memory
  • PROM Programmable Read-Only Memory
  • a terminal includes a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor, the processor is configured to load and execute the executable instructions To implement the above-mentioned SR triggering method, or the above-mentioned random access method.
  • a network device includes a processor, a transceiver connected to the processor, and a memory for storing executable instructions of the processor.
  • the processor is configured to load and execute executable instructions to implement the above-mentioned SR triggering method, or the above-mentioned random access method, or the above-mentioned information configuration method.
  • a chip is provided, the chip includes a programmable logic circuit or program, and the chip is used to implement the above-mentioned SR triggering method, or, the above-mentioned random access method, or, as above The information configuration method described above.
  • a computer-readable storage medium is also provided, wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by the processor to implement The above-mentioned SR triggering method, or, the above-mentioned random access method, or, the above-mentioned information configuration method.
  • the program can be stored in a computer-readable storage medium.
  • the above-mentioned The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, and the like.

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Abstract

本申请公开了一种SR触发方法、随机接入方法、装置、设备及存储介质，涉及移动通信领域。所述SR触发方法，包括：在触发定时提前TA上报但上行资源满足不可用条件的情况下，触发SR；其中，上行资源是用于上行新传的物理上行共享信道PUSCH资源。本申请提供的SR触发方法，使得终端可以及时地上报TA，避免出现TA大于偏移参数k offset的取值，从而保证终端能够进行正常的上行传输。

Description

SR触发方法、随机接入方法、装置、设备及存储介质 技术领域
本申请涉及移动通信领域，特别涉及一种调度请求(Scheduling Request，SR)触发方法、随机接入方法、装置、设备及存储介质。
背景技术
在新空口(New Radio，NR)系统中，为保证上行传输的正交性，网络设备要求来自同一时刻但不同频域资源的不同终端的信号达到网络设备的时间基本上是对齐的。为保证网络设备侧的时间同步，新空口系统中支持上行定时提前(Timing Advance，TA)的机制。在非地面通信网络(Non Terrestrial Network，NTN)中，UE和网络之间的信号传输时延大幅度增加，为了处理比较大的传播时延，NTN系统的定时关系相对于NR系统做了增强，对于受下行接收和上行发送交互影响的时序，在其定时关系中引入一个偏移参数K offset，该参数取值由网络配置。网络设备主要TA值来配置偏移参数k offset的取值。
由于具有定位能力的终端通常可以通过终端位置信息和星历信息等来估计服务链路对应的TA值，并使用该TA值进行TA预补偿来进行上行传输，但网络设备无法获取终端的具体位置和终端采用的TA预补偿值。相关技术中，终端可以通过上报TA的方式辅助网络设备对终端进行偏移参数k offset配置。
但是，对于处于无线资源控制(Radio Resource Control，RRC)连接态的终端，在某些场景下，可能出现终端实际使用的TA值大于网络设备配置的偏移参数k offset的情况，导致终端不能基于网络设备针对上行传输的资源分配指示进行正常上行传输。
发明内容
本申请实施例提供了一种SR触发方法、随机接入方法、装置、设备及存储介质，使得终端可以及时向网络设备上报TA，进而辅助网络设备为终端配置合适的k offset。
根据本申请的一个方面，提供了一种SR触发方法，应用于处于RRC连接态的终端中，所述方法包括：
在触发TA上报但上行资源满足不可用条件的情况下，触发SR；
其中，所述上行资源是用于上行新传的物理上行共享信道(Physical Uplink Shared Channel，PUSCH)资源。
根据本申请的一个方面，提供了一种随机接入方法，应用于处于RRC连接态的终端中，所述方法包括：
在满足触发条件的情况下，触发随机接入过程；
其中，所述触发条件包括：所述终端的TA超过偏移参数k offset，或，所述k offset与所述TA之间的差值小于或等于第四阈值。
根据本申请的一个方面，提供了一种信息配置方法，应用于网络设备，所述方法包括：
向终端发送SR配置，所述SR配置用于配置终端的TA上报对应的SR配置。
根据本申请的一个方面，提供了一种SR触发装置，所述装置包括：
触发模块，用于在触发TA上报但上行资源满足不可用条件的情况下，触发SR；
其中，所述上行资源是用于上行新传的PUSCH资源。
根据本申请的一个方面，提供了一种随机接入装置，所述装置包括：
接入模块，用于在满足触发条件的情况下，触发随机接入过程；
其中，所述触发条件包括：所述终端的TA超过偏移参数k offset，或，所述偏移参数k offset与所述TA之间的差值小于或等于第四阈值。
根据本申请的一个方面，提供了一种信息配置装置，所述装置包括：
发送模块，用于向终端发送SR配置，所述SR配置用于配置终端的TA上报对应的SR配置。
根据本申请的一个方面，提供了一种终端，所述终端包括处理器、与所述处理器相连的收发器和用于存储所述处理器的可执行指令的存储器，所述处理器被配置为加载并执行所述可执行指令以实现如上所述的SR触发方法，或，如上所述的随机接入方法。
根据本申请的一个方面，提供了一种网络设备，所述网络设备包括处理器，与所述处理器相连的收发器和用于存储所述处理器的可执行指令的存储器；其中，所述处理器被配置为加载并执行所述可执行指令以实现如上所述的SR触发方法，或，如上所述的随机接入方法，或，如上所述的信息配置方法。
根据本申请的一个方面，提供了一种计算机可读存储介质，所述可读存储介质中存储有可执行指令， 所述可执行指令由所述处理器加载并执行以实现如上所述的SR触发方法，或，如上所述的随机接入方法，或，如上所述的信息配置方法。
本申请实施例提供的技术方案至少包括如下有益效果：
在触发TA上报但上行资源满足不可用条件的情况下，终端触发SR，以告知网络设备向终端调度用于TA上报的上行资源，使得终端可以及时地上报TA，避免出现TA大于k offset的取值，从而保证终端能够进行正常的上行传输。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请一个示例性实施例提供的透传载荷NTN的网络架构图；
图2是本申请一个示例性实施例提供的再生载荷NTN的网络架构图；
图3是本申请一个示例性实施例提供的NTN系统的定时关系；
图4是本申请一个示例性实施例提供的NTN系统的定时关系；
图5是本申请一个示例性实施例提供的SR触发方法的流程图；
图6是本申请一个示例性实施例提供的SR触发方法的流程图；
图7是本申请一个示例性实施例提供的SR触发方法的流程图；
图8是本申请一个示例性实施例提供的随机接入方法的流程图；
图9是本申请一个示例性实施例提供的随机接入方法的流程图；
图10是本申请一个示例性实施例提供的SR触发方法的流程图；
图11是本申请一个示例性实施例提供的随机接入方法的流程图；
图12是本申请一个示例性实施例提供的信息配置方法的流程图；
图13是本申请一个示例性实施例提供的信息配置方法的流程图；
图14是本申请一个示例性实施例提供的SR触发装置的结构示意图；
图15是本申请一个示例性实施例提供的随机接入装置的结构示意图；
图16是本申请一个示例性实施例提供的信息配置装置的结构示意图；
图17是本申请一个示例性实施例示出的通信设备的框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
目前第三代合作伙伴项目(Third Generation Partnership Project，3GPP)正在研究NTN技术，NTN技术一般采用卫星通信的方式向地面用户提供通信服务。相比地面蜂窝网通信，卫星通信具有很多独特的优点。首先，卫星通信不受用户地域的限制，例如一般的陆地通信不能覆盖海洋、高山、沙漠等无法搭设通信设备或由于人口稀少而不做通信覆盖的区域，而对于卫星通信来说，由于一颗卫星即可以覆盖较大的地面，加之卫星可以围绕地球做轨道运动，因此理论上地球上每一个角落都可以被卫星通信覆盖。其次，卫星通信有较大的社会价值。卫星通信在边远山区、贫穷落后的国家或地区都可以以较低的成本覆盖到，从而使这些地区的人们享受到先进的语音通信和移动互联网技术，有利于缩小与发达地区的数字鸿沟，促进这些地区的发展。再次，卫星通信距离远，且通信距离增大通讯的成本没有明显增加；最后，卫星通信的稳定性高，不受自然灾害的限制。
通信卫星按照轨道高度的不同分为低地球轨道(Low-Earth Orbit，LEO)卫星、中地球轨道(Medium-Earth Orbit，MEO)卫星、地球同步轨道(Geostationary Earth Orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等等。目前阶段主要研究的是LEO和GEO。
1.LEO
低轨道卫星高度范围为500km～1500km，相应轨道周期约为1.5小时～2小时。用户间单跳通信的信号传播延迟一般小于20ms。最大卫星可视时间20分钟。信号传播距离短，链路损耗少，对用户终端的发射功率要求不高。
2.GEO
地球同步轨道卫星，轨道高度为35786km，围绕地球旋转周期为24小时。用户间单跳通信的信号传播延迟一般为250ms。
为了保证卫星的覆盖以及提升整个卫星通信系统的系统容量，卫星采用多波束覆盖地面，一颗卫星可 以形成几十甚至数百个波束来覆盖地面；一个卫星波束可以覆盖直径几十至上百公里的地面区域。
存在至少两种NTN场景：透传载荷NTN和再生载荷NTN。图1示出了透传载荷NTN的场景，图2示出了再生载荷NTN的场景。
NTN网络由以下网元组成:
·1个或者多个网关，用于连接卫星和地面公共网络。
·馈线链路：用于网关和卫星之间通信的链路。
·服务链路：用于终端和卫星之间通信的链路。
·卫星：从其提供的功能上可以分为透传载荷和再生载荷这两种。
·透传载荷：只提供无线频率滤波，频率转换和放大的功能。只提供信号的透明转发，不会改变其转发的波形信号。
·再生载荷：除了提供无线频率滤波，频率转换和放大的功能，还可以提供解调/解码，路由/转换，编码/调制的功能。其具有网络设备的部分或者全部功能。
·星间链路(Inter-satellite links，ISL)：存在于再生载荷场景下。
示意性的如图1和图2所示，NTN的两种场景下，网络设备16可以是基站，基站是一种用于为终端提供无线通信功能的装置。基站可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在LTE系统中，称为eNodeB或者eNB；在5G NR-U系统中，称为gNodeB或者gNB。随着通信技术的演进，“基站”这一描述可能会变化。本申请实施例中，上述为终端14提供无线通信功能的装置统称为网络设备。
随机接入过程是指从终端发送随机接入前导码开始尝试接入网络到与网络间建立起基本的信令连接之前的过程，随机接入过程用于使终端与网络侧建立数据通信。在NR中，主要支持两种类型的随机接入过程，分别是类型1的随机接入过程和类型2的随机接入过程。
一、类型1的随机接入过程(四步随机接入过程)。
类型1的随机接入过程主要包括如下步骤：
步骤1，终端向网络设备发送消息1(msg1)：随机接入前导码(preamble)。
终端在选择的物理随机接入信道(Physical Random Access Channel，PRACH)的时频资源上发送选择的随机接入前导码，网络设备基于随机接入前导码可以估计上行时延(Timing)，和终端传输消息3所需要的授权(grant)大小。
步骤2，网络设备向终端发送消息2(msg2)：随机接入响应(Random Access Response，RAR)。
终端发送消息1(msg1)之后,开启一个随机接入响应窗口(RAR window)，在该随机接入响应窗口内监测物理下行控制信道(Physical Downlink Control Channel，PDCCH)。该PDCCH是用随机接入无线网络临时标识符(Random Access Radio Network Temporary Identifier，RA-RNTI)加扰的PDCCH。
成功监测到RA-RNTI加扰的PDCCH之后，终端能够获得该PDCCH调度的物理下行共享信道(Physical Downlink Share Channel，PDSCH)，PDSCH中包含RAR。
RAR中包含：回退指示(Backoff Indicator，BI)，用于指示重传消息1的回退时间；随机接入前导标识(Radom Access Preamble Identifier，RAPID)，用于指示随机接入前导码；定时提前组(Time Advance Group，TAG)，用于调整上行时序；上行授权(UL grant)，用于调度消息3的上行资源指示；临时小区无线网络临时标识(Temporary Cell-Radio Network Temporary Identity，Temporary C-RNTI)，用于加扰消息4的PDCCH(初始接入)。
步骤3，终端向网络设备发送消息3(msg3)：调度传输。
消息3主要用于通知网络设备触发该随机接入过程的事件。示例性的，如果事件是初始接入随机过程，则在消息3中会携带UE ID和建立原因(establishment cause)；如果事件是RRC重建，则会携带连接态UE标识和建立原因(establishment cause)。
步骤4，网络设备向终端发送消息4(msg4)：竞争解决消息。消息4用于冲突解决。
步骤5，终端向网络设备发送消息5(msg5)：连接建立完成(complete)。
消息5主要用于通知网络设备随机接入的连接建立完成。
二、类型2的随机接入过程(两步随机接入过程)。
在基于竞争的随机接入过程中，可以将4步(4-step)的随机接入过程合并成2步(2-step)的随机接入过程。合并后的2步随机接入过程包括消息A和消息B，相关步骤包括：
步骤1，终端向网络设备发送消息A(msgA)。
步骤2，网络设备接收到终端发送的消息A后，向终端发送消息B(msgB)。
可选地，消息A包括消息1和消息3的内容，也即消息A包括：随机接入前导码和UE ID，UE ID可以是：C-RNTI、临时C-RNTI、RA-RNTI、非接入层(Non-Access Stratum，NAS)UE ID中的一种。可 选地，消息B包括消息2和消息4的内容，也即消息B包括：随机接入响应和竞争解决消息。
网络设备通过测量终端的上行传输来确定每个终端的TA值。网络设备通过如下方式中的至少一种向终端发送定时提前命令(Timing Advance Command，TAC)，用于通知终端其需要提前上行传输的时间量。
·初始化TA的获取：在随机接入过程中，网络设备通过测量接收到的前导码(preamble)来确定TA值，并通过随机接入响应(Random Access Response，RAR)的TAC字段发送给终端。
·RRC连接态的终端TA的调整：虽然在随机接入过程中，终端与网络设备取得了上行同步，但上行信号到达网络设备的定时可能会随着时间发生变化，因此，终端需要不断地更新TA，以保持上行同步。如果某个终端的TA需要校正，则网络设备会发送一个TAC给该终端，要求其调整TA。该TAC是通过媒体访问控制控制单元(Medium Access Control Control Element，MAC CE)形式发送给终端。
在NTN系统中，终端在进行上行传输时需要考虑TA的影响。由于系统中的传播时延较大，因此TA值的范围也比较大。当终端被调度在时隙n进行上行传输时，该终端考虑往返传播时延，在上行传输时提前传输，从而可以使得信号到达网络设备侧时，在网络设备侧上行的时隙n上。具体地，NTN系统中的定时关系可能包括两种情况，分别如下图3和图4所示。
情况1如图3所示，和新空口(New Radio，NR)地面网络一样，网络设备侧的下行时隙和上行时隙是对齐的。相应地，为了使终端的上行传输和网络设备侧的上行时隙对齐，终端需要使用一个较大的TA值。在进行上行传输时，也需要引入一个较大的偏移参数k offset。
情况2如图4所示，网络设备侧的下行时隙和上行时隙之间有一个偏移值。在这种情况下，如果想要使终端的上行传输和网络设备侧的上行时隙对齐，终端只需要使用一个较小的TA值。但是，该情况下网络设备可能需要额外的调度复杂度来处理相应的调度时序。
在NTN场景中的终端都具备全球导航卫星系统(Global Navigation Satellite System，GNSS)定位能力并具有TA预补偿能力，即终端可以基于GNSS定位能力和服务卫星的星历信息确定服务链路对应的TA。终端可以基于以下公式确定TA：
T TA＝(N TA+N TA,UE-Specific+N TA,common+N TA,offset)×T C
式中：N TA基于网络下发的TAC进行更新；N TA,UE-Specific为终端(User Equipment，UE)自身估计的服务链路对应的TA；N TA,common为网络广播的公共TA；N TA,offset为一个固定的偏移值。
现有NR系统中的时序关系如下：
物理下行共享信道(Physical Downlink Shared Channel，PDSCH)接收时序：当终端被数字版权唯一标识符(Digital Copyright Identifier，DCI)调度接收PDSCH时，该DCI中包括K 0的指示信息，该K 0用于确定传输该PDSCH的时隙。例如，如果在时隙n上收到该调度DCI，那么被分配用于PDSCH传输的时隙为时隙
Figure PCTCN2021118880-appb-000001
其中，K 0是根据PDSCH的子载波间隔确定的，μ PDSCH和μ PDCCH分别用于确定为PDSCH和物理上行链路控制信道(Physical Uplink Control Channel，PDCCH)配置的子载波间隔。K 0的取值范围是0到32。
DCI调度的PUSCH的传输时序：当终端被DCI调度发送PUSCH时，该DCI中包括K 2的指示信息，该K 2用于确定传输该PUSCH的时隙。例如，如果在时隙n上收到该调度DCI，那么被分配用于PUSCH传输的时隙为时隙
Figure PCTCN2021118880-appb-000002
其中，K 2是根据PDSCH的子载波间隔确定的，μ PDSCH和μ PDCCH分别用于确定为PUSCH和PDCCH配置的子载波间隔。K 2的取值范围是0到32。
RAR授予调度的PUSCH的传输时序：对于被RAR授予调度进行PUSCH传输的时隙，如果终端发起物理随机接入信道(Physical Random Access Channel，PRACH)传输后，该终端收到包括该对应RAR授予消息的PDSCH的结束位置在时隙n，那么终端在时隙n+K 2+Δ上传输该PUSCH，其中，K 2和Δ是协议约定的。
PUCCH上传输混合自动重传请求(Hybrid Automatic Repeat request Acknowledge character，HARQ-ACK)的传输时序：对于PUCCH传输的时隙，如果一个PDSCH接收的结束位置在时隙n或一个指示SPS PDSCH释放的PDCCH接收的结束位置在时隙n，终端应在时隙n+K 1内的PUCCH资源上传输对应的HARQ-ACK信息，其中K 1是时隙个数并且是通过DCI格式中PDSCH到HARQ的定时器(PDSCH-to-HARQ-timing-indicator)信息域来指示的，或是通过dl-DataToUL-ACK参数提供的。K 1＝0对应PUCCH传输的最后一个时隙与PDSCH接收或指示SPS PDSCH释放的PDCCH接收的时隙重叠。
MAC CE激活时序：当包括MAC CE命令的PDSCH对应的HARQ-ACK信息在时隙n上传输，该MAC CE命令指示的对应行为以及终端假设的下行配置应从时隙
Figure PCTCN2021118880-appb-000003
后的第一个时隙开始生效，其中，
Figure PCTCN2021118880-appb-000004
表示子载波间隔配置μ下每个子帧包括的时隙个数。
PUSCH上的信道状态信息(Channel State Information，CSI)传输时序：PUSCH上的CSI传输时序和一般情况下DCI调度PUSCH传输的传输时序相同。
CSI参考资源时序：对于在上行时隙n'上上报CSI的CSI参考资源是根据单个下行时隙n-n CSI_ref确定的，其中，
Figure PCTCN2021118880-appb-000005
μ DL和μ UL分别是下行和上行的子载波间隔配置。n CSI_ref的取值取决于CSI上报的类型。
非周期SRS传输时序：如果终端在时隙n上收到DCI触发传输非周期SRS，该UE在时隙
Figure PCTCN2021118880-appb-000006
上传输每个被触发的SRS资源集合中的非周期SRS，其中k是通过每个被触发的SRS资源集合中的高层参数SlotOffset配置的并且是根据被触发的SRS传输对应的子载波间隔确定的，μ SRS和μ PDCCH分别是被触发的SRS传输和携带触发命令的PDCCH的子载波间隔配置。
NTN系统的时序增强：
NR系统中的PDSCH接收时序只受下行接收侧的时序影响，不受NTN系统中的大传输往返时延的影响，因此NTN系统可以重用NR系统中的PDSCH接收时序。
对于其他受下行接收和上行发送交互影响的时序，为了能在NTN系统中正常工作，或者说，为了克服NTN系统中的大传输时延，时序关系需要增强。一个简单的方案是在系统中引入一个偏移参数k offset，并将该参数应用到相关的时序关系中。
DCI调度的PUSCH(包括PUSCH上传输的CSI)的传输时序：如果在时隙n上收到该调度DCI，那么被分配用于PUSCH传输的时隙为时隙
Figure PCTCN2021118880-appb-000007
RAR授予调度的PUSCH的传输时序：对于被RAR授予调度进行PUSCH传输的时隙，终端在时隙n+K 2+Δ+k offset上传输该PUSCH。
PUCCH上传输HARQ-ACK的传输时序：对于PUCCH传输的时隙，UE应在时隙n+K 1+k offset内的PUCCH资源上传输对应的HARQ-ACK信息。
MAC CE激活时序：当包括MAC CE命令的PDSCH对应的HARQ-ACK信息在时隙n上传输，该MAC CE命令指示的对应行为以及UE假设的下行配置应从时隙
Figure PCTCN2021118880-appb-000008
后的第一个时隙开始生效，其中，X可能由NTN的终端能力确定，取值可以不为3。
CSI参考资源时序：对于在上行时隙n'上上报CSI的CSI参考资源是根据单个下行时隙n-n CSIref-k offset确定的。
非周期SRS传输时序：如果终端在时隙n上收到DCI触发传输非周期SRS，该UE在时隙
Figure PCTCN2021118880-appb-000009
上传输每个被触发的SRS资源集合中的非周期SRS。
在NTN系统中，通过引入k offset来增强上行传输的时序。
对于初始随机接入过程，网络设备可以通过广播的方式配置小区级的k offset或者卫星波束级别的k offset。
对于连接态的终端,网络设备可以通过无线资源控制层(Radio Resource Control，RRC)信令或者MAC为终端配置专属的k offset。
如果网络设备没有配置终端专属的k offset，则终端使用广播方式配置的k offset。
图5示出了本申请一个示例性实施例提供的SR触发方法的流程图。本实施例以该方法应用于处于RRC连接态的终端。可选地，终端是支持NTN的终端。该方法包括：
步骤502：在触发TA上报但上行资源满足不可用条件的情况下，触发SR。
在NTN场景中，处于RRC连接态的终端在触发TA上报但上行资源满足不可用条件的情况下，终端触发SR，当终端触发一个SR之后，该SR处于未决状态(pending)。
上行资源是指用于新传的PUSCH资源，示意性地，该PUSCH资源用于传输数据、TA上报的MAC CE中的至少一种，本申请对此不作限定。
可选地，TA上报的情况包括如下情况中的至少一种：
·基于周期性的TA上报；
·基于事件触发的TA上报；
·基于网络请求的TA上报。
可选地，上行资源满足不可用条件包括如下情况中的至少一种：
·上行资源满足第一条件；
·上行资源满足第二条件。
其中，第一条件包括没有用于新传的第一上行资源；第二条件包括存在用于新传的第二上行资源，但第二上行资源不能容纳TA上报的MAC CE。
示例性地，终端触发TA上报，在终端没有用于新传的PUSCH资源的情况下，终端触发SR。
示例性地，终端触发TA上报，在终端有用于新传的PUSCH资源，但该PUSCH资源不能容纳TA上 报的MAC CE的情况下，终端触发SR。
上述SR用于请求调度用于TA上报的上行资源，或者说，上述SR用于请求调度用于新传的PUSCH资源。
在触发SR且存在可用于传输SR的PUCCH资源的情况下，终端向网络设备发送SR。在网络设备接收到SR的情况下，网络设备向终端调度用于新传的PUSCH资源，供终端进行TA上报。
综上所述，在本实施例提供的方法中，通过处于RRC连接态的终端在触发TA上报但PUSCH资源满足不可用条件的情况下，触发SR；本实施例通过触发SR以及存在可用的PUCCH资源时，终端向网络设备发送SR，在网络设备接收到SR的情况下，网络设备向终端调度用于新传的PUSCH资源，使得终端可以及时地上报TA，避免出现TA大于偏移参数k offset的取值，从而保证终端能够进行正常的上行传输。
图6示出了本申请一个示例性实施例提供的SR触发方法的流程图。本实施例以该方法应用于处于RRC连接态的终端。可选地，终端是支持NTN的终端。该方法包括：
步骤602：在触发TA上报、上行资源满足不可用条件且满足第三条件的情况下，触发SR。
终端在触发TA上报、上行资源满足不可用条件且满足第三条件的情况下，触发SR；其中，第三条件包括K offset和TA之间的差值小于或等于第一阈值，k offset是用于增强调度时序关系所引入的偏移参数，TA是终端当前使用的TA。
可选地，第一阈值是网络设备通过系统广播向终端配置的；或，第一阈值是网络设备通过专有信令向终端配置的；或，第一阈值是通信协议预定义的；本申请实施例对此不作限定，第一阈值的取值大于零。示例性的，专用信令是只有该终端(或终端组)可正确解码接收的信令。
上行资源是指用于新传的PUSCH资源，示意性地，该PUSCH资源用于传输数据、TA上报的MAC CE中的至少一种，本申请对此不作限定。
可选地，TA上报的情况包括如下情况中的至少一种：
基于周期性的TA上报；
基于事件触发的TA上报；
基于网络请求的TA上报。
可选地，上行资源满足不可用条件包括如下情况中的至少一种：
上行资源满足第一条件；
上行资源满足第二条件。
其中，第一条件包括没有用于新传的第一上行资源；第二条件包括存在用于新传的第二上行资源，但第二上行资源不能容纳TA上报的MAC CE。
在一种可能的实现方式中，终端触发TA上报、终端没有用于新传的PUSCH资源且在终端满足第三条件的情况下，终端触发SR。
在一种可能的实现方式中，终端触发TA上报、终端有用于新传的PUSCH资源，但该PUSCH资源不能容纳TA上报的MAC CE且在终端满足第三条件的情况下，终端触发SR。
在触发SR且存在可用于传输SR的PUCCH资源的情况下，终端向网络设备发送SR。在网络设备接收到SR的情况下，网络设备可向终端调度用于新传的PUSCH资源，供终端进行TA上报。
综上所述，处于RRC连接态的终端在触发TA上报、上行资源满足不可用条件且满足第三条件的情况下，触发SR。本实施例通过触发SR，终端向网络设备发送SR，在网络设备接收到SR的情况下，网络设备向终端调度用于新传的PUSCH资源，使得终端可以及时地上报TA，避免出现TA大于偏移参数k offset的取值，从而保证终端能够进行正常的上行传输。
根据图5、图6中所述内容，处于RRC连接态的终端在满足SR触发条件的情况下，触发SR。图7示出了本申请一个示例性实施例提供的SR触发方法的流程图。该方法包括：
步骤701：终端接收配置信息。
在一种可能的实现方式中，终端接收第一配置信息，第一配置信息用于配置TA上报对应的SR ID，SR ID是SR配置对应的ID。
网络设备可以为终端配置TA上报对应的SR配置，即在该配置方式下，TA上报对应有专属的SR配置。网络设备为终端配置TA上报对应的SR ID，所述SR ID对应一个SR配置。
在一种可能的实现方式中，终端接收第二配置信息，第二配置信息用于配置SR配置。该方式下，不需要显式配置TA上报对应的SR ID，任何一个SR配置(即第二配置信息)都可以用于TA上报触发的SR的发送。
该步骤701为可选步骤，网络设备可以为终端配置TA上报对应的SR配置或通用SR配置，网络设备也可以不为终端配置TA上报对应的SR配置或通用SR配置。
步骤702：在触发TA上报但用于传输TA上报的PUSCH资源满足不可用条件的情况下，触发SR。
示例性地，处于RRC连接态的终端在触发TA上报但用于传输TA上报的PUSCH资源满足不可用条件的情况下，触发SR。
示例性地，处于RRC连接态的终端在触发TA上报、上行资源满足不可用条件且满足第三条件的情况下，触发SR。
在终端触发SR后，SR处于未决状态。
步骤703：在SR处于未决状态的过程中，在满足取消条件的情况下，取消SR。
在SR处于未决状态的过程中，终端在满足取消条件的情况下，取消SR。
在一种可能的实现方式中，在SR处于未决状态且终端满足取消条件的情况下，取消SR。
可选地，终端在满足取消条件的情况下，取消SR中的取消条件包括如下条件中的至少一种：
在终端完成TA上报的情况下，即终端传输了一个媒体接入控制协议数据单元(Medium Access Control Protocol Data Unit，MAC PDU)，该MAC PDU中包括TA上报MAC CE，在终端完成TA上报后，终端取消SR；或，在终端接收到用于重配置k offset的重配置信令，终端取消SR；或，在终端接收到用于重配置k offset的重配置信令，且重新配置的k offset与TA的差值大于或等于第二阈值，终端取消SR。
可选地，第二阈值是网络设备通过系统广播向终端配置的；或，第二阈值是网络设备通过专有信令向终端配置的；或，第二阈值是通信协议预定义的；本申请实施例对此不作限定，第二阈值的取值大于零或等于零。
步骤704：在SR处于未决状态的过程中，在满足触发条件的情况下，触发随机接入过程。
在SR处于未决状态的过程中，终端在满足触发条件的情况下，触发随机接入过程。在触发随机接入过程后，终端可以重新使用网络广播的共同K offset，或者，网络设备可通过随机接入过程使得终端完成TA上报。
在一种可能的实现方式中，SR处于未决状态，在终端满足触发条件的情况下，触发随机接入过程。
可选地，SR处于未决状态，终端在满足触发条件的情况下，触发随机接入过程中的触发条件包括如下条件中的至少一种：
·终端没有用于传输所述SR的PUCCH资源；
在一种可能的实现方式中，在步骤701中，终端接收第一配置信息，第一配置信息用于配置TA上报对应的SR ID，SR ID是SR配置对应的ID。基于TA上报的SR ID对应的SR配置，确定用于传输所述SR的PUCCH资源；通过PUCCH资源发送SR。在未配置用于TA上报对应的SR ID的情况下，确定没有用于传输所述SR的PUCCH资源。
网络设备可以为终端配置TA上报对应的SR ID，即在该配置方式下，TA上报对应有专属的SR配置。网络设备为终端配置TA上报对应的SR ID，所述SR ID对应一个SR配置。在网络设备为终端配置有TA上报对应的SR ID的情况下，将该SR ID对应的SR配置中的PUCCH资源，确定为用于传输所述SR的PUCCH资源，终端通过PUCCH资源发送SR。
在网络设备没有为终端配置TA上报对应的SR ID的情况下，确定没有用于传输SR的PUCCH资源，在终端的TA上报触发了SR的情况下，触发随机接入过程，随机接入过程是在没有用于传输SR的上行资源的情况下触发的。
在一种可能的实现方式中，在步骤701中，终端接收第二配置信息，第二配置信息用于配置SR配置。基于SR配置，确定用于传输SR的PUCCH资源；通过PUCCH资源发送SR。在未配置任何SR配置的情况下，确定没有用于传输SR的PUCCH资源。
网络设备为终端配置SR配置，在该配置方式下，在终端的TA上报触发了SR的情况下，基于SR配置确定用于传输所述SR的PUCCH资源，终端通过PUCCH资源发送SR。
在未配置有任何SR配置的情况下，在终端的TA上报触发了SR的情况下，确定没有用于传输SR的PUCCH资源，触发随机接入过程，随机接入过程是在没有用于传输SR的上行资源的情况下触发的。任何SR配置均可作为TA上报触发的SR。
·SR对应的SR传输次数已达到最大SR传输次数。
在一种可能的实现方式中，SR对应的SR传输次数已达到最大SR传输次数，终端触发随机接入过程，本实施例中最大SR传输次数可采用默认值或网络配置，本实施例对此不加以限定。
步骤705：在随机接入过程结束前，在满足停止条件的情况下，停止随机接入过程。
在一种可能的实现方式中，终端在没有用于传输SR的PUCCH资源的情况下触发的随机接入过程，终端在满足停止条件的情况下，停止随机接入过程。
可选地，终端停止随机接入过程满足的停止条件包括如下条件中的至少一种：
终端接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报，终端停止该随机接入过程；
示例性地，终端接收到上行调度授权，且上行调度授权不是在消息2或消息B中指示的，终端利用该上行调度授权传输了一个MAC PDU，且MAC PDU包括TA上报的MAC CE，则终端停止该随机接入过程。或，终端接收到用于重配置k offset的重配置信令，终端停止该随机接入过程；或，终端接收到用于重配置k offset的重配置信令，且k offset和TA之间的差值大于或等于第三阈值，终端停止该随机接入过程。
可选地，第三阈值是网络设备通过系统广播向终端配置的；或，第三阈值是网络设备通过专有信令向终端配置的；或，第三阈值是通信协议预定义的；本申请实施例对此不作限定，第三阈值的取值大于零或等于零。
综上所述，处于RRC连接态的终端在触发TA上报但没有用于新传的PUSCH资源的情况下，或，在终端有用于新传的PUSCH资源，但该PUSCH资源不能容纳TA上报的MAC CE的情况下，或，终端没有用于新传的PUSCH资源且k offset和TA之间的差值小于或等于第一阈值的情况下，或，在终端有用于新传的PUSCH资源，但该PUSCH资源不能容纳TA上报的MAC CE且k offset和TA之间的差值小于或等于第一阈值的情况下，终端触发SR，终端通过发送SR向网络设备申请用于新传的PUSCH资源，供终端进行TA上报。
在SR处于未决状态的过程中，在终端完成TA上报的情况下，或，在终端接收到用于重配置k offset的重配置信令的情况下，或，在终端接收到用于重配置k offset的重配置信令且重新配置的k offset与TA的差值大于或等于第二阈值的情况下终端取消SR。
在SR处于未决状态的过程中，终端在没有用于传输SR的PUCCH资源的情况下，或，SR对应的SR传输次数已达到最大SR传输次数的情况下，触发随机接入过程。
在终端接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报的情况下，或，终端接收到用于重配置k offset的重配置信令，或，终端接收到用于重配置k offset的重配置信令，且k offset和TA之间的差值大于或等于第三阈值的情况下，停止随机接入过程。
本实施例通过触发SR，并利用终端中的PUCCH资源将SR发送至网络设备，在网络设备接收到SR的情况下，网络设备向终端调度用于新传的PUSCH资源，使得终端可以及时地上报TA，从而保证终端能够进行正常的上行传输。
图8示出了本申请一个示例性实施例提供的随机接入方法的流程图。本实施例以该方法应用于处于RRC连接态的终端。可选地，终端是支持NTN的终端。该方法包括：
步骤802：在满足触发条件的情况下，触发随机接入过程。
在NTN场景中，RRC连接态的终端在满足触发条件的情况下，触发随机接入过程。
其中，触发条件包括如下至少一种：
·终端的TA超过k offset；
·k offset与TA之间的差值小于或等于第四阈值。
在一种可能的实现方式中，终端接收网络设备配置的k offset。终端基于当前使用的TA值与当前使用的k offset进行比较，在终端当前使用的TA值小于或等于终端当前使用的k offset的情况下，终端能够针对上行传输的资源分配指示正常进行上行传输。
在终端当前使用的TA值大于或等于终端当前使用的k offset的情况下，即终端TA>k offset或者TA＝k offset的情况下，终端触发随机接入过程。
在随机接入过程中，终端使用公共k offset发送随机接入过程中的消息3；
其中，公共k offset是网络广播的小区级公共k offset或波束级公共k offset，在终端接收到网络设备针对该终端配置的专属k offset之前，终端一直使用公共k offset，即终端一直使用网络广播的小区级公共k offset或波束级公共k offset。
在一种可能的实现方式中，终端基于当前使用的TA值与当前使用的k offset进行比较，在终端当前使用的k offset与当前使用的TA之间的差值小于或等于第四阈值的情况下，终端触发随机接入过程。
可选地，第四阈值是网络设备通过系统广播向终端配置的；或，第四阈值是网络设备通过专有信令向终端配置的；或，第四阈值是通信协议预定义的；本申请实施例对此不作限定，第四阈值的取值大于零或等于零。
综上所述，RRC连接态的终端在满足触发条件的情况下，触发随机接入过程；本实施例通过触发随机接入过程，使得终端可以重新使用有效可用的k offset，从而保证终端能够进行正常的上行传输。
图9示出了本申请一个示例性实施例提供的随机接入方法的流程图。本实施例以该方法应用于处于RRC连接态的终端。可选地，终端是支持NTN的终端。该方法包括：
步骤902：在满足触发条件的情况下，触发随机接入过程。
在NTN场景中，RRC连接态的终端在满足触发条件的情况下，触发随机接入过程；
其中，触发条件包括：终端的TA超过k offset，或，k offset与TA之间的差值小于或等于第四阈值。
在一种可能的实现方式中，终端接收网络设备配置的k offset。终端基于当前使用的TA值与当前使用的k offset进行比较，在终端当前使用的TA值小于或等于终端当前使用的k offset的情况下，终端能够针对上行传输的资源分配指示正常进行上行传输。
在终端当前使用的TA值大于或等于终端当前使用的k offset的情况下，即终端TA>k offset或者TA＝k offset的情况下，终端触发随机接入过程。
在一种可能的实现方式中，终端基于当前使用的TA值与当前使用的k offset进行比较，在终端当前使用的k offset与当前使用的TA之间的差值小于或等于第四阈值的情况下，终端触发随机接入过程。
步骤904：在满足停止条件的情况下，停止随机接入过程。
在一种可能的实现方式中，在随机接入过程完成前，终端在满足停止条件的情况下，停止随机接入过程。
可选地，终端停止随机接入过程满足的停止条件包括如下条件中的至少一种：
终端接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报，终端停止该随机接入过程；
示例性地，终端接收到上行调度授权，且上行调度授权不是在消息2或消息B中指示的，终端利用该上行调度授权传输了一个MAC PDU，且MAC PDU包括TA上报的MAC CE，则终端停止该随机接入过程。或，终端接收到用于重配置k offset的重配置信令，终端停止该随机接入过程；或，终端接收到用于重配置k offset的重配置信令，且k offset和TA之间的差值大于或等于第五阈值，终端停止该随机接入过程。
可选地，第五阈值是网络设备通过系统广播向终端配置的；或，第五阈值是网络设备通过专有信令向终端配置的；或，第五阈值是通信协议预定义的；本申请实施例对此不作限定，第五阈值的取值大于零或等于零。
综上所述，处于RRC连接态的终端在满足触发条件的情况下，触发随机接入过程；在随机接入过程结束前，终端在满足停止条件的情况下，停止随机接入过程。本实施例通过触发随机接入过程使得终端可以重新使用有效的K offset，避免出现TA大于k offset的取值，从而保证终端能够进行正常的上行传输。
图10示出了本申请一个示例性实施例提供的SR触发方法的流程图。本实施例以该方法应用于处于RRC连接态的终端。可选地，终端是支持NTN的终端。该方法包括如下步骤：
步骤1001：终端接收网络设备发送的配置信息。
步骤1002：终端触发TA上报。
终端接收网络设备配置信息，基于网络设备配置信息，终端触发TA上报。TA上报的情况包括如下情况中的至少一种：
基于周期性的TA上报；
基于事件触发的TA上报；
基于网络请求的TA上报。
步骤1003：判断上行资源是否满足不可用条件或上行资源在满足不可用条件的情况下，是否同时满足第三条件。
终端触发TA上报，在上行资源满足可用条件的情况下，执行步骤1004；终端触发TA上报、上行资源满足不可用条件且满足第三条件的情况下，执行步骤1005；其中，第三条件包括k offset和TA之间的差值小于或等于第一阈值，k offset是用于增强调度时序关系所引入的偏移参数，TA是终端当前使用的TA。上行资源是指用于新传的PUSCH资源。
步骤1004：完成TA上报。
在终端触发TA上报，在PUSCH资源满足可用条件的情况下，完成TA的上报。
步骤1005：触发调度请求SR。
在终端触发TA上报、PUSCH资源满足不可用条件且满足第三条件的情况下，终端触发SR。
步骤1006：终端判断是否有用于传输SR的上行资源。
判断终端是否有用于传输SR的上行资源，传输SR的上行资源是指用于传输SR的PUCCH资源。在终端具有用于传输SR的PUCCH资源的情况下，执行步骤1007；在终端没有用于传输SR的PUCCH资源的情况下，执行步骤1010。
步骤1007：SR传输次数未达到最大SR传输次数。
在终端具有用于传输SR的PUCCH资源的情况下，判断SR的传输次数是否达到最大SR传输次数，在SR的传输次数达到最大SR传输次数的情况下，执行步骤1010；在SR的传输次数未达到最大SR传输次数的情况下，执行步骤1008。
步骤1008：发送SR。
在终端具有用于传输SR的PUCCH资源且SR的传输次数未达到最大SR传输次数的情况下，终端发送SR。
步骤1009：在满足取消条件的情况下，取消触发的SR。
在终端发送SR后，终端在满足取消条件的情况下，取消触发的SR。
取消触发的SR中的取消条件包括如下条件中的至少一种：
在终端完成TA上报的情况下，即终端传输了一个MAC PDU，该MAC PDU中包括TA上报MAC CE，在终端完成TA上报后，终端取消SR；或，在终端接收到用于重配置k offset的重配置信令，终端取消SR；或，在终端接收到用于重配置k offset的重配置信令，且重新配置的k offset与TA的差值大于或等于终端的第二阈值，终端取消SR。
步骤1010：触发随机接入过程。
在终端没有用于传输SR的PUCCH资源的情况下，或，在SR的传输次数达到最大SR传输次数的情况下，终端触发随机接入过程。
步骤1011：在满足停止条件的情况下，停止正在进行的随机接入过程。
在随机接入过程结束前，终端在满足停止条件的情况下，停止随机接入过程。
可选地，所述随机接入是由于终端没有用于传输所述SR的有效PUCCH资源而触发的。
终端停止随机接入过程满足的停止条件包括如下条件中的至少一种：
终端接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报，终端停止该随机接入过程；
示例性地，终端接收到上行调度授权，且上行调度授权不是在消息2或消息B中指示的，终端利用该上行调度授权传输了一个MAC PDU，且MAC PDU包括TA上报的MAC CE，则终端停止该随机接入过程。或，终端接收到用于重配置k offset的重配置信令，终端停止该随机接入过程；或，终端接收到用于重配置k offset的重配置信令，且k offset和TA之间的差值大于或等于第三阈值，终端停止该随机接入过程。
可选地，第三阈值是网络设备通过系统广播向终端配置的；或，第三阈值是网络设备通过专有信令向终端配置的；或，第三阈值是通信协议预定义的；本申请实施例对此不作限定，第三阈值的取值大于零或等于零。
需要说明的是，上述第二阈值与第三阈值可以是同一配置参数，本申请实施例对此不作限定。
综上所述，处于RRC连接态的终端接收网络设备配置信息，终端在触发TA上报但在用于新传的PUSCH资源满足不可用条件的情况下，触发SR；终端在没有用于传输SR的PUCCH资源的情况下，或，SR的传输次数达到最大SR传输次数的情况下，触发随机接入过程；终端在满足停止条件的情况下，停止随机接入过程。本实施例通过发送SR使得终端可以及时地上报TA，从而保证终端能够进行正常的上行传输。
图11示出了本申请一个示例性实施例提供的随机接入方法的流程图。本实施例以该方法应用于处于RRC连接态的终端。可选地，终端是支持NTN的终端。该方法包括如下步骤：
步骤1101：终端接收网络设备配置的偏移参数。
终端接收网络设备配置的k offset。
步骤1102：终端基于当前的TA与当前使用的k offset进行比较。
终端基于当前使用的TA值与当前使用的k offset进行比较，在终端当前使用的TA值小于或等于终端当前使用的k offset的情况下，终端能够针对上行传输的资源分配指示正常进行上行传输。
步骤1103：在满足触发条件的情况下，触发随机接入过程。
触发条件包括：终端的TA超过k offset，或，k offset与TA之间的差值小于或等于第四阈值。
终端基于当前使用的TA值与当前使用的k offset进行比较，在终端当前使用的TA值大于或等于终端当前使用的k offset的情况下，即终端TA>k offset或者TA＝k offset的情况下，终端触发随机接入过程。
终端基于当前使用的TA值与当前使用的k offset进行比较，在终端当前使用的k offset与当前使用的TA之间的差值小于或等于第四阈值的情况下，终端触发随机接入过程。
可选地，第四阈值是网络设备通过系统广播向终端配置的；或，第四阈值是网络设备通过专有信令向终端配置的；或，第四阈值是通信协议预定义的；本申请实施例对此不作限定，第四阈值的取值大于零或等于零。
步骤1104：在满足停止条件的情况下，停止正在进行的随机接入过程。
在随机接入过程结束前，终端在满足停止条件的情况下，停止正在进行的随机接入过程。
可选地，终端停止随机接入过程满足的停止条件包括如下条件中的至少一种：
终端接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报，终端停止该随机接入过程；
示例性地，终端接收到上行调度授权，且上行调度授权不是在消息2或消息B中指示的，终端利用该上行调度授权传输了一个MAC PDU，且MAC PDU包括TA上报的MAC CE，则终端停止该随机接入过程。或，终端接收到用于重配置k offset的重配置信令，终端停止该随机接入过程；或，终端接收到用于重配置k offset的重配置信令，且k offset和TA之间的差值大于或等于第五阈值，终端停止该随机接入过程。
需要说明的是，上述第三阈值与第五阈值可以是同一配置参数，本申请实施例对此不作限定。
综上所述，处于RRC连接态的终端基于当前使用的TA值与当前使用的k offset进行比较，在满足触发条件的情况下，触发随机接入过程；在随机接入过程结束前，终端在满足停止条件的情况下，停止随机接入过程。本实施例通过触发随机接入过程，使得终端可以重新使用有效可用的k offset，从而保证终端能够进行正常的上行传输。
图12示出了本申请一个示例性实施例提供的信息配置方法的流程图。本实施例以该方法应用于网络设备。可选地，网络设备是支持NTN的网络设备。该方法包括如下步骤：
步骤1202：向终端发送SR配置，SR配置用于配置终端的TA上报对应的SR配置。
在NTN场景中，网络设备向终端发送SR配置，SR配置用于配置终端的TA上报对应的SR配置。
可选地，网络设备向终端发送第一配置信息，第一配置信息用于配置TA上报对应的SRID，SRID是SR配置对应的ID。
网络设备为终端配置TA上报对应的SR配置，即在该配置方式下，TA上报对应有专属的SR配置。网络设备为终端配置TA上报对应的SR ID，该SR ID对应一个SR配置。
可选地，网络设备向终端发送第二配置信息，第二配置信息用于配置SR配置。该方式下，不需要显式配置TA上报对应的SR ID，任何一个SR配置都可以用于TA上报触发的SR的发送。
结合上述终端侧的方法实施例可知，网络设备向终端发送SR配置，SR配置用于配置终端的TA上报对应的SR配置。网络设备向终端发送SR配置，在网络设备向终端发送第一配置信息的情况下，基于TA上报的SR ID对应的SR配置，确定用于传输该SR的PUCCH资源；通过PUCCH资源发送SR。在网络设备向终端发送第二配置信息的情况下，基于SR配置，确定用于传输SR的PUCCH资源；通过PUCCH资源发送SR。本实施例通过发送SR使得终端可以及时地上报TA，从而保证终端能够进行正常的上行传输。
图13示出了本申请一个示例性实施例提供的信息配置方法的流程图。本实施例以该方法应用于网络设备。可选地，网络设备是支持NTN的网络设备。该方法包括如下步骤：
步骤1302：向终端发送阈值。
在一种可能的实现方式中，网络设备向终端配置第一阈值。
可选地，网络设备通过系统广播向终端配置第一阈值；或，网络设备通过专有信令向终端配置第一阈值；
第一阈值是在终端触发了TA上报之后，在上行资源满足不可用条件的情况下用于触发SR的偏移参数k offset和TA之间的差值阈值，第一阈值用于触发SR，k offset是用于增强调度时序关系所引入的偏移参数，TA是所述终端当前使用的TA。终端在触发TA上报、上行资源满足不可用条件且满足偏移参数k offset和TA之间的差值小于或等于第一阈值的情况下，终端触发SR。本申请实施例对此不作限定，第一阈值的取值大于零。
在一种可能的实现方式中，网络设备向终端配置第二阈值。
可选地，网络设备通过系统广播向终端配置第二阈值；或，网络设备通过专有信令向终端配置第二阈值；
第二阈值是偏移参数k offset和TA之间的差值阈值，第二阈值用于取消SR，k offset是用于增强调度时序关系所引入的偏移参数，TA是所述终端当前使用的TA，在终端接收到用于重配置偏移参数k offset的重配置信令，且偏移参数k offset和TA之间的差值大于或等于第二阈值的情况下，终端取消SR。
在一种可能的实现方式中，网络设备向终端配置第三阈值。
可选地，网络设备通过系统广播向终端配置第三阈值；或，网络设备通过专有信令向终端配置第三阈值；
第三阈值是偏移参数k offset和TA之间的差值阈值，第三阈值用于停止第一随机接入过程，第一随机接入过程是在处于未决状态的SR满足触发条件时触发的，k offset是用于增强调度时序关系所引入的偏移参数，TA是所述终端当前使用的TA，在终端接收到用于重配置偏移参数k offset的重配置信令，且偏移参数k offset和TA之间的差值大于或等于第三阈值的情况下，终端停止第一随机接入过程。
在一种可能的实现方式中，网络设备向终端配置第四阈值。
可选地，网络设备通过系统广播向终端配置第四阈值；或，网络设备通过专有信令向终端配置第四阈值；
第四阈值是偏移参数k offset和TA之间的差值阈值，第四阈值用于触发第二随机接入过程，k offset是用于增强调度时序关系所引入的偏移参数，TA是所述终端当前使用的TA，在TA超过k offset，或，k offset与TA之间的差值小于或等于第四阈值的情况下，终端触发第二随机接入过程。
在一种可能的实现方式中，网络设备向终端配置第五阈值。
可选地，网络设备通过系统广播向终端配置第五阈值；或，网络设备通过专有信令向终端配置第五阈值；
第五阈值是偏移参数k offset和TA之间的差值阈值，第五阈值用于停止第二随机接入过程，k offset是用于增强调度时序关系所引入的偏移参数，TA是所述终端当前使用的TA，在TA超过k offset，或，k offset与TA之间的差值大于或等于第五阈值的情况下，终端停止第二随机接入过程。
需要说明的是，上述第二阈值与第三阈值可以是同一配置参数；上述第三阈值与第五阈值也可以是同一配置参数，本申请实施例对此不作限定。在第二阈值和第三阈值是同一配置参数的情况下，本实施例中的第二阈值和第三阈值的配置过程可合并为一次配置过程。同理，在第三阈值和第五阈值是同一配置参数的情况下，本实施例中的第三阈值和第五阈值的配置过程可合并为一次配置过程。
综上所述，网络设备通过系统广播，或，专有信令向终端配置第一阈值，终端在触发TA上报、上行资源满足不可用条件且偏移参数k offset和TA之间的差值小于或等于第一阈值的情况下，终端触发SR。网络设备通过系统广播，或，专有信令向终端配置第二阈值，在终端接收到用于重配置偏移参数k offset的重配置信令，且偏移参数k offset和TA之间的差值大于或等于第二阈值的情况下，终端取消SR。网络设备通过系统广播，或，专有信令向终端配置第三阈值，在终端接收到用于重配置偏移参数k offset的重配置信令，且偏移参数k offset和TA之间的差值大于或等于第三阈值的情况下，终端停止第一随机接入过程。网络设备通过系统广播，或，专有信令向终端配置第四阈值，在TA超过k offset，或，k offset与TA之间的差值小于或等于第四阈值的情况下，终端触发第二随机接入过程。网络设备通过系统广播，或，专有信令向终端配置第五阈值，在TA超过k offset，或，k offset与TA之间的差值大于或等于第五阈值的情况下，终端停止第二随机接入过程。
示意性如图14所示，本申请实施例提供了一种SR触发装置，该装置可以实现成为终端的全部或一部分。或可以应用在终端中。该终端可以是支持NTN的终端。该装置包括：
触发模块1402，用于在触发TA上报但上行资源满足不可用条件的情况下，触发调度请求SR；其中，上行资源是用于上行新传的PUSCH资源。
在一种可能的实现方式中，TA上报包括如下至少一种：
基于周期性的TA上报；
基于事件触发的TA上报；
基于网络请求的TA上报。
在一种可能的实现方式中，上行资源满足不可用条件包括：
上行资源满足第一条件；或，上行资源满足第二条件；
其中，第一条件包括没有用于新传的第一上行资源；第二条件包括存在用于新传的第二上行资源，但第二上行资源不能容纳TA上报的MAC CE。
在一种可能的实现方式中，触发模块1402，还用于在触发TA上报、上行资源满足不可用条件且满足第三条件的情况下，触发SR；
其中，第三条件包括k offset和TA之间的差值小于或等于第一阈值，k offset是用于增强调度时序关系所引入的偏移参数，TA是终端当前使用的TA。
在一种可能的实现方式中，第一阈值是网络设备通过系统广播向终端配置的；或，第一阈值是网络设备通过专有信令向终端配置的；或，第一阈值是通信协议预定义的。
在一种可能的实现方式中，在SR处于未决状态的过程中，触发模块1402用于在满足取消条件的情况下，取消SR。
在一种可能的实现方式中，取消条件包括：
完成TA上报；或，接收到用于重配置k offset的重配置信令；或，接收到用于重配置k offset的重配置信令，且k offset和TA之间的差值大于或等于第二阈值。
在一种可能的实现方式中，第二阈值是网络设备通过系统广播向终端配置的；或，第二阈值是网络设备通过专有信令向终端配置的；或，第二阈值是通信协议预定义的。
在一种可能的实现方式中，在SR处于未决状态的过程中，触发模块1402还用于在满足触发条件的情况下，触发随机接入过程。
在一种可能的实现方式中，触发条件包括：没有用于传输SR的PUCCH资源；或，SR对应的SR传输次数已达到最大SR传输次数。
在一种可能的实现方式中，触发模块还用于接收第一配置信息，第一配置信息用于配置TA上报对应的SR ID，SR ID是SR配置对应的ID。
在一种可能的实现方式中，触发模块1402还用于基于TA上报的SR ID对应的SR配置，确定用于传输SR的PUCCH资源；
通过PUCCH资源发送SR。
在一种可能的实现方式中，触发模块1402还用于在未配置用于TA上报对应的SR ID的情况下，确定没有用于传输SR的PUCCH资源。
在一种可能的实现方式中，触发模块1402还用于接收第二配置信息，第二配置信息用于配置SR配置。
在一种可能的实现方式中，触发模块1402还用于基于SR配置，确定用于传输SR的PUCCH资源；
通过PUCCH资源发送SR。
在一种可能的实现方式中，触发模块1402还用于在未配置任何SR配置的情况下，确定没有用于传输SR的PUCCH资源。
在一种可能的实现方式中，在随机接入过程结束前，触发模块1402还用于在满足停止条件的情况下，停止随机接入过程。
在一种可能的实现方式中，随机接入过程是在没有用于传输SR的PUCCH资源的情况下触发的。
在一种可能的实现方式中，停止条件包括：
接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报；或，接收到用于重配置k offset的重配置信令；或，接收到用于重配置k offset的重配置信令，且k offset和TA之间的差值大于或等于第三阈值。
在一种可能的实现方式中，接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报，包括：
接收到一个上行调度授权，且上行调度授权不是在消息2或消息B中指示的；终端使用上行调度授权传输了一个MAC PDU，且MAC PDU包括TA上报的MAC CE。
在一种可能的实现方式中，第三阈值是网络设备通过系统广播终端配置的；或，第三阈值是网络设备通过专有信令向终端配置的；或，第三阈值是通信协议预定义的。
在一种可能的实现方式中，该装置应用于NTN场景。
示意性如图15所示，本申请实施例提供了一种随机接入装置，该装置可以实现成为终端的全部或一部分。或可以应用在终端中。该终端可以是支持NTN的终端。该装置包括：
接入模块1502，用于在满足触发条件的情况下，触发随机接入过程；
其中，触发条件包括：终端的TA超过k offset，或，k offset与TA之间的差值小于或等于第四阈值。
在一种可能的实现方式中，触发随机接入过程，包括：
使用公共k offset发送随机接入过程中的消息3；
其中，公共k offset是网络广播的小区级公共k offset或波束级公共k offset。
在一种可能的实现方式中，第四阈值是网络设备通过系统广播向终端配置的；或，第四阈值是网络设备通过专有信令向终端配置的；或，第四阈值是通信协议预定义的。
在一种可能的实现方式中，在随机接入过程结束前，接入模块1502还用于在满足停止条件的情况下，停止随机接入过程。
在一种可能的实现方式中，停止条件包括：
接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报数据；或，接收到用于重配置k offset的重配置信令；或，接收到用于重配置k offset的重配置信令，且k offset和TA之间的差值大于或等于第五阈值。
在一种可能的实现方式中，接收到上行调度授权，且使用上行调度授权调度的上行资源传输了TA上报，包括：
接收到一个上行调度授权，且上行调度授权不是在消息2或消息B中指示的；终端使用上行调度授权传输了一个MAC PDU，且MAC PDU包括TA上报的MAC CE。
在一种可能的实现方式中，该装置应用于NTN场景。
示意性如图16所示，本申请实施例提供了一种信息配置装置，该装置可以实现成为网络设备的全部或一部分。或可以应用在网络设备中。该网络设备可以是支持NTN的网络设备。该装置包括：
发送模块，用于向终端发送SR配置，SR配置用于配置终端的定时提前TA上报对应的SR配置。
在一种可能的实现方式中，发送模块1602，还用于配置第一配置信息，第一配置信息用于配置所述TA上报对应的SR ID，SR ID是SR配置对应的ID。
在一种可能的实现方式中，发送模块1602，还用于发送第一配置信息，第一配置信息用于配置TA上报对应的SR ID，SR ID是SR配置对应的ID。
在一种可能的实现方式中，发送模块1602，还用于通过系统广播向所述终端配置第一阈值；或，通过专有信令向所述终端配置所述第一阈值；
所述第一阈值是偏移参数k offset和TA之间的用于触发SR的差值阈值，所述第一阈值用于触发SR，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
在一种可能的实现方式中，发送模块1602，还用于通过系统广播向所述终端配置第二阈值；或，通过专有信令向所述终端配置所述第二阈值；
所述第二阈值是偏移参数k offset和TA之间的差值阈值，所述第二阈值用于取消SR，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
在一种可能的实现方式中，发送模块1602，还用于通过系统广播向所述终端配置第三阈值；或，通过专有信令向所述终端配置所述第三阈值；
所述第三阈值是偏移参数k offset和TA之间的差值阈值，所述第三阈值用于停止第一随机接入过程，所述第一随机接入过程是在处于未决状态的SR满足触发条件时触发的，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
在一种可能的实现方式中，发送模块1602，还用于通过系统广播向所述终端配置第四阈值；或，通过专有信令向所述终端配置所述第四阈值；
所述第四阈值是偏移参数k offset和TA之间的差值阈值，所述第四阈值用于触发第二随机接入过程，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
在一种可能的实现方式中，发送模块1602，还用于通过系统广播向终端配置第五阈值；或，通过专有信令向所述终端配置第五阈值；
第五阈值是偏移参数k offset和TA之间的差值阈值，第五阈值用于停止第二随机接入过程，k offset是用于增强调度时序关系所引入的偏移参数，TA是终端当前使用的TA。
图17示出了本申请一个示例性实施例提供的通信设备(终端或网络设备)的结构示意图，该通信设备包括：处理器1701、接收器1702、发射器1703、存储器1704和总线1705。
处理器1701包括一个或者一个以上处理核心，处理器1701通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器1702和发射器1703可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器1704通过总线1705与处理器1701相连。
存储器1704可用于存储至少一个指令，处理器1701用于执行该至少一个指令，以实现上述方法实施例中提到的NTN中定时提前的上报方法和接收方法的各个步骤。
此外，存储器1704可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(Electrically-Erasable Programmable Read Only Memory，EEPROM)，可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)，静态随时存取存储器(Static Random Access Memory，SRAM)，只读存储器(Read-Only Memory，ROM)，磁存储器，快闪存储器，可编程只读存储器(Programmable Read-Only Memory，PROM)。
根据本申请的一个方面，提供了一种终端，该终端包括处理器、与处理器相连的收发器和用于存储处理器的可执行指令的存储器，处理器被配置为加载并执行可执行指令以实现如上所述的SR触发方法，或，如上所述的随机接入方法。
根据本申请的一个方面，提供了一种网络设备，该网络设备包括处理器，与处理器相连的收发器和用于存储处理器的可执行指令的存储器。其中，处理器被配置为加载并执行可执行指令以实现如上所述的SR触发方法，或，如上所述的随机接入方法，或，如上所述的信息配置方法。
根据本申请的一个方面，提供了一种芯片，该芯片包括可编程逻辑电路或程序，该芯片用于实现如上所述的SR触发方法，或，如上所述的随机接入方法，或，如上所述的信息配置方法。
在本申请的一个示例性实施例中，还提供了一种计算机可读存储介质，所述可读存储介质中存储有可执行指令，所述可执行指令由所述处理器加载并执行以实现如上所述的SR触发方法，或，如上所述的随机接入方法，或，如上所述的信息配置方法。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程 序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (41)

  1. 一种调度请求SR触发方法，其特征在于，所述方法用于处于无线资源控制RRC连接态的终端，所述方法包括：
    在触发定时提前TA上报但上行资源满足不可用条件的情况下，触发所述SR；
    其中，所述上行资源是用于上行新传的物理上行共享信道PUSCH资源。
  2. 根据权利要求1所述的方法，其特征在于，所述TA上报包括如下至少一种：
    基于周期性的TA上报；
    基于事件触发的TA上报；
    基于网络请求的TA上报。
  3. 根据权利要求1所述的方法，其特征在于，所述上行资源满足不可用条件包括：
    所述上行资源满足第一条件；
    或，
    所述上行资源满足第二条件；
    其中，所述第一条件包括没有用于新传的第一上行资源；所述第二条件包括存在用于新传的第二上行资源，但所述第二上行资源不能容纳所述TA上报的媒体访问控制控制单元MAC CE。
  4. 根据权利要求1所述的方法，其特征在于，所述在触发TA上报但上行资源满足不可用条件的情况下，触发所述SR，包括：
    在触发TA上报、所述上行资源满足不可用条件且满足第三条件的情况下，触发所述SR；
    其中，所述第三条件包括偏移参数k offset和TA之间的差值小于或等于第一阈值，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
  5. 根据权利要求4所述的方法，其特征在于，
    所述第一阈值是网络设备通过系统广播向所述终端配置的；
    或，
    所述第一阈值是网络设备通过专有信令向所述终端配置的；
    或，
    所述第一阈值是通信协议预定义的。
  6. 根据权利要求1所述的方法，其特征在于，在所述SR处于未决状态的过程中，所述方法还包括：
    在满足取消条件的情况下，取消所述SR。
  7. 根据权利要求6所述的方法，其特征在于，所述取消条件包括：
    完成所述TA上报；
    或，
    接收到用于重配置偏移参数K offset的重配置信令；
    或，
    接收到用于重配置偏移参数k offset的重配置信令，且所述偏移参数k offset和TA之间的差值大于或等于第二阈值。
  8. 根据权利要求7所述的方法，其特征在于，
    所述第二阈值是网络设备通过系统广播向所述终端配置的；
    或，
    所述第二阈值是网络设备通过专有信令向所述终端配置的；
    或，
    所述第二阈值是通信协议预定义的。
  9. 根据权利要求1所述的方法，其特征在于，在所述SR处于未决状态的过程中，所述方法还包括：
    在满足触发条件的情况下，触发随机接入过程。
  10. 根据权利要求9所述的方法，其特征在于，所述触发条件包括：
    没有用于传输所述SR的物理上行控制信道PUCCH资源；
    或，
    所述SR对应的SR传输次数已达到最大SR传输次数。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    接收第一配置信息，所述第一配置信息用于配置所述TA上报对应的调度请求标识SR ID，所述SR ID是SR配置对应的ID。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    基于所述TA上报的SR ID对应的SR配置，确定用于传输所述SR的PUCCH资源；
    通过所述PUCCH资源发送所述SR。
  13. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    在未配置用于所述TA上报对应的SR ID的情况下，确定没有用于传输所述SR的PUCCH资源。
  14. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    接收第二配置信息，所述第二配置信息用于配置SR配置。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    基于所述SR配置，确定用于传输所述SR的PUCCH资源；
    通过所述PUCCH资源发送所述SR。
  16. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    在未配置任何SR配置的情况下，确定没有用于传输所述SR的PUCCH资源。
  17. 根据权利要求13或16所述的方法，其特征在于，在所述随机接入过程结束前，所述方法还包括：
    在满足停止条件的情况下，停止所述随机接入过程。
  18. 根据权利要求17所述的方法，其特征在于，所述随机接入过程是在没有用于传输所述SR的PUCCH资源的情况下触发的。
  19. 根据权利要求17所述的方法，其特征在于，所述停止条件包括：
    接收到上行调度授权，且使用所述上行调度授权调度的上行资源传输了所述TA上报；
    或，
    接收到用于重配置偏移参数k offset的重配置信令；
    或，
    接收到用于重配置偏移参数k offset的重配置信令，且所述偏移参数k offset和TA之间的差值大于或等于第三阈值。
  20. 根据权利要求19所述的方法，其特征在于，所述接收到上行调度授权，且使用所述上行调度授权调度的上行资源传输了所述TA上报，包括：
    接收到一个上行调度授权，且所述上行调度授权不是在消息2或消息B中指示的；所述终端使用所述上行调度授权传输了一个媒体访问控制协议数据单元MAC PDU，且所述MAC PDU包括所述TA上报的MAC CE。
  21. 根据权利要求19所述的方法，其特征在于，
    所述第三阈值是网络设备通过系统广播向所述终端配置的；
    或，
    所述第三阈值是网络设备通过专有信令向所述终端配置的；
    或，
    所述第三阈值是通信协议预定义的。
  22. 根据权利要求1所述的方法，其特征在于，所述方法应用于非地面通信NTN场景。
  23. 一种随机接入方法，其特征在于，所述方法用于处于无线资源控制RRC连接态的终端，所述方法包括：
    在满足触发条件的情况下，触发随机接入过程；
    其中，所述触发条件包括：所述终端的定时提前TA超过偏移参数k offset，或，所述偏移参数k offset与所述定时提前TA之间的差值小于或等于第四阈值。
  24. 根据权利要求23所述的方法，其特征在于，所述触发随机接入过程，包括：
    使用公共k offset发送所述随机接入过程中的消息3；
    其中，所述公共k offset是网络广播的小区级公共k offset或波束级公共k offset。
  25. 根据权利要求23所述的方法，其特征在于，
    所述第四阈值是网络设备通过系统广播向所述终端配置的；
    或，
    所述第四阈值是网络设备通过专有信令向所述终端配置的；
    或，
    所述第四阈值是通信协议预定义的。
  26. 根据权利要求23所述的方法，其特征在于，所述在所述随机接入过程结束前，所述方法还包括：
    在满足停止条件的情况下，停止所述随机接入过程。
  27. 根据权利要求26所述的方法，其特征在于，所述停止条件包括：
    接收到上行调度授权，且使用所述上行调度授权调度的上行资源传输了所述TA上报数据；
    或，
    接收到用于重配置偏移参数k offset的重配置信令；
    或，
    接收到用于重配置偏移参数k offset的重配置信令，且所述偏移参数k offset和TA之间的差值大于或等于第五阈值。
  28. 根据权利要求27所述的方法，其特征在于，所述接收到上行调度授权，且使用所述上行调度授权调度的上行资源传输了所述TA上报，包括：
    接收到一个上行调度授权，且所述上行调度授权不是在消息2或消息B中指示的；所述终端使用所述上行调度授权传输了一个媒体访问控制协议数据单元MAC PDU，且所述MAC PDU包括所述TA上报的MAC CE。
  29. 根据权利要求23所述的方法，其特征在于，所述方法应用于非地面通信NTN场景。
  30. 一种信息配置方法，其特征在于，所述方法用于网络设备，所述方法包括：
    向终端发送调度请求SR配置，所述SR配置用于配置所述终端的定时提前TA上报对应的所述SR配置。
  31. 根据权利要求30所述的方法，其特征在于，所述向终端发送SR配置包括：
    发送第一配置信息，所述第一配置信息用于配置所述TA上报对应的SR ID，所述SR ID是所述SR配置对应的ID。
  32. 根据权利要求30所述的方法，其特征在于，所述方法还包括：
    通过系统广播向所述终端配置第一阈值；
    或，
    通过专有信令向所述终端配置所述第一阈值；
    所述第一阈值是偏移参数k offset和TA之间的用于触发SR的差值阈值，所述第一阈值用于触发SR，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
  33. 根据权利要求30所述的方法，其特征在于，所述方法还包括：
    通过系统广播向所述终端配置第二阈值；
    或，
    通过专有信令向所述终端配置所述第二阈值；
    所述第二阈值是偏移参数k offset和TA之间的差值阈值，所述第二阈值用于取消SR，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
  34. 根据权利要求30所述的方法，其特征在于，所述方法还包括：
    通过系统广播向所述终端配置第三阈值；
    或，
    通过专有信令向所述终端配置所述第三阈值；
    所述第三阈值是偏移参数k offset和TA之间的差值阈值，所述第三阈值用于停止第一随机接入过程，所述第一随机接入过程是在处于未决状态的SR满足触发条件时触发的，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
  35. 根据权利要求30所述的方法，其特征在于，所述方法还包括：
    通过系统广播向所述终端配置第四阈值；
    或，
    通过专有信令向所述终端配置所述第四阈值；
    所述第四阈值是偏移参数k offset和TA之间的差值阈值，所述第四阈值用于触发第二随机接入过程，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
  36. 根据权利要求30所述的方法，其特征在于，所述方法还包括：
    通过系统广播向所述终端配置第五阈值；
    或，
    通过专有信令向所述终端配置所述第五阈值；
    所述第五阈值是偏移参数k offset和TA之间的差值阈值，所述第五阈值用于停止第二随机接入过程，所述k offset是用于增强调度时序关系所引入的偏移参数，所述TA是所述终端当前使用的TA。
  37. 一种调度请求SR触发装置，其特征在于，所述装置包括：
    触发模块，用于在触发定时提前TA上报但上行资源满足不可用条件的情况下，触发所述SR；
    其中，所述上行资源是用于上行新传的物理上行共享信道PUSCH资源。
  38. 一种随机接入装置，其特征在于，所述装置包括：
    接入模块，用于在满足触发条件的情况下，触发随机接入过程；
    其中，所述触发条件包括：所述终端的定时提前TA超过偏移参数k offset，或，所述偏移参数k offset与所述TA之间的差值小于或等于第四阈值。
  39. 一种信息配置装置，其特征在于，所述装置包括：
    发送模块，用于向终端发送调度请求SR配置，所述SR用于配置终端的定时提前TA上报对应的SR配置。
  40. 一种终端，其特征在于，所述终端包括处理器、与所述处理器相连的收发器和用于存储所述处理器的可执行指令的存储器，所述处理器被配置为加载并执行所述可执行指令以实现如权利要求1至22任一所述的调度请求SR触发方法，或，如权利要求23至29任一所述的随机接入方法，或，如权利要求30至36任一所述的信息配置方法。
  41. 一种计算机可读存储介质，其特征在于，所述可读存储介质中存储有可执行指令，所述可执行指令由所述处理器加载并执行以实现如权利要求1至22任一所述的调度请求SR触发方法，或，如权利要求23至29任一所述的随机接入方法，或，如权利要求30至36任一所述的信息配置方法。
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CN111630908A (zh) * 2017-11-17 2020-09-04 瑞典爱立信有限公司 在nr中信令发送ta偏移
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