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US-12627455-B2 - Method for data transmission processing based on transmission configuration indicator and timing advance and related apparatus

US12627455B2US 12627455 B2US12627455 B2US 12627455B2US-12627455-B2

Abstract

Disclosed are a method for data transmission processing and related apparatuses, the method for data transmission processing and related apparatuses are applied to a user equipment (UE). The method includes: determining validity of a transmission configuration indicator (TCI) and a timing advance (TA).

Inventors

  • Huayu Zhou
  • Sicong Zhao
  • Zhenzhu LEI
  • Zhengang Pan

Assignees

  • SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.

Dates

Publication Date
20260512
Application Date
20211013
Priority Date
20201016

Claims (17)

  1. 1 . A method for data transmission processing, comprising: determining validity of a transmission configuration indicator (TCI) and/or a timing advance (TA), wherein the validity of the TCI is determined by: determining a signal strength of a reference signal, the reference signal being a signal quasi-co-located (QCLed) with a type-1 physical downlink control channel (PDCCH) or a signal associated with a predefined uplink resource (PUR); determining that the TCI is valid, if the signal strength of the reference signal is less than or equal to a first threshold; and determining that the TCI is invalid, if the signal strength of the reference signal is greater than the first threshold; or determining a signal strength of a reference signal, the reference signal being a signal QCLed with the type-1 PDCCH or a signal associated with the PUR; calculating a difference between the signal strength of the reference signal and a signal strength of a candidate reference signal; determining that the TCI is valid, if the difference is greater than or equal to a second threshold; and determining that the TCI is invalid, if the difference is less than the second threshold.
  2. 2 . The method according to claim 1 , further comprising: falling back to a random access process or a small data packet transmission process, if the TCI or the TA is determined to be invalid.
  3. 3 . The method according to claim 1 , further comprising: terminating monitoring the type-1 PDCCH, if the TCI or the TA is determined to be invalid.
  4. 4 . The method according to claim 1 , further comprising: terminating data transmission on the PUR, if the TCI or the TA is determined to be invalid.
  5. 5 . The method according to claim 1 , wherein the validity of the TA is determined by: determining a signal strength of a reference signal, the reference signal being a signal QCLed with the type-1 PDCCH or a signal associated with the PUR; calculating a change rate of the signal strength of the reference signal; determining that the TA is valid, if the change rate is greater than or equal to a third threshold; and determining that the TA is invalid, if the change rate is less than the third threshold.
  6. 6 . The method according to claim 1 , wherein the reference signal is a synchronization signal block (SSB), and the signal strength of the reference signal is reference signal receiving power (RSPP) of the reference signal.
  7. 7 . The method according to claim 1 , wherein a control resource set corresponding to the type-1 PDCCH is in an initial active downlink bandwidth part (BWP) or in a BWP with index 0.
  8. 8 . The method according to claim 1 , wherein the PUR is in an initial active uplink BWP or in a BWP with index 0.
  9. 9 . The method according to claim 1 , wherein before determining the validity of a current TCI or a current TA, the method further comprises: determining that an active BWP in a connected state comprises an initial active BWP or a BWP with index 0 in a frequency domain resource.
  10. 10 . A user equipment (UE), comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the one or more programs comprise instructions configured to: determine validity of a transmission configuration indicator (TCI) and/or a timing advance (TA), wherein in terms of determining the validity of the TA, the one or more programs comprise instructions configured to: determine a signal strength of a reference signal, the reference signal being a signal QCLed with a type-1 physical downlink control channel (PDCCH) or a signal associated with a predefined uplink resource (PUR); calculate a change rate of the signal strength of the reference signal; determine that the TA is valid, if the change rate is greater than or equal to a third threshold; and determine that the TA is invalid, if the change rate is less than the third threshold.
  11. 11 . A non-transitory computer-readable storage medium storing computer programs for electronic data interchange (EDI), wherein the computer programs are operable with a computer to: determine validity of a transmission configuration indicator (TCI) and/or a timing advance (TA), wherein in terms of determining the validity of the TCI, the computer programs are operable with the computer to: determine a signal strength of a reference signal, the reference signal being a signal quasi-co-located (QCLed) with a type-1 physical downlink control channel (PDCCH) or a signal associated with a predefined uplink resource (PUR); determine that the TCI is valid, if the signal strength of the reference signal is less than or equal to a first threshold; and determine that the TCI is invalid, if the signal strength of the reference signal is greater than the first threshold; or determine a signal strength of a reference signal, the reference signal being a signal QCLed with the type-1 PDCCH or a signal associated with the PUR; calculating a difference between the signal strength of the reference signal and a signal strength of a candidate reference signal; determine that the TCI is valid, if the difference is greater than or equal to a second threshold; and determine that the TCI is invalid, if the difference is less than the second threshold.
  12. 12 . The method according to claim 1 , further comprising: monitoring the type-1 PDCCH or transmitting data on the PUR, if the TCI and the TA are determined to be valid.
  13. 13 . The method according to claim 5 , wherein the reference signal is an SSB, and the signal strength of the reference signal is RSPP of the reference signal.
  14. 14 . The UE according to claim 10 , wherein the one or more programs further comprise instructions configured to: monitor the type-1 PDCCH or transmitting data on the PUR, if the TCI and the TA are determined to be valid.
  15. 15 . The UE according to claim 10 , wherein the one or more programs further comprise instructions configured to: fall back to a random access process or a small data packet transmission process, if the TCI or the TA is determined to be invalid.
  16. 16 . The non-transitory according to claim 11 , wherein the computer programs are operable with the computer to: monitor the type-1 PDCCH or transmitting data on the PUR, if the TCI and the TA are determined to be valid.
  17. 17 . The non-transitory according to claim 11 , wherein the computer programs are operable with the computer to: fall back to a random access process or a small data packet transmission process, if the TCI or the TA is determined to be invalid.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is a National Stage of International Application No. PCT/CN2021/123444, field Oct. 13, 2021, which claims priority to Chinese Patent Application No. 202011111989.5, filed Oct. 16, 2020, the entire disclosure of which are hereby incorporated by reference. TECHNICAL FIELD This disclosure relates to the field of communication technology, and in particular, to a method for data transmission processing and related apparatuses. BACKGROUND Heartbeat traffics generally mean that clients transmit application-layer messages to servers to indicate to the servers that current services are active. Generally speaking, the heartbeat traffic is a small data packet service with a long period, where the long period means that the message transmission can be performed once every few minutes, and the small data packet means that a data packet transmitted once is relatively small, such as hundreds or thousands of bytes. In the internet of things (IOT) or some wearable-device scenarios, the heartbeat traffic is a relatively common service for the sake of power saving and typical application requirements. Since the heartbeat traffic is a small data packet service with a long period, the user equipment (UE) does not need to transmit a scheduling request (SR) to apply for uplink grant from the network, and the UE obtains the uplink grant by monitoring a physical downlink control channel (PDCCH) on a configured PDCCH monitoring occasion (MO), so that the SR can be omitted, and power consumption of the UE can be reduced. Generally, the UE in a connected state needs to monitor a PDCCH for a heartbeat traffic. In an idle state or an inactive state, data of the heartbeat traffic may be implemented by reserving a PDCCH configuration for the heartbeat traffic in the connected stat. In other words, the UE still monitors, in the idle state or the inactive state, the PDCCH for the heartbeat traffic configured in the connected state, so that the UE may receive an uplink grant and transmit uplink data. When the UE is in the connected state, the network may indicate beam information through unicast signaling, that is, the network can ensure transmission reliability through a transmission configuration indicator (TCI) or a timing advance (TA). However, when the UE falls back to the idle state or the inactive state, it is difficult for the network to ensure transmission reliability through the TCI or the TA. Therefore, the UE needs to determine whether the current TCI and TA are valid. SUMMARY In a first aspect, a method for data transmission processing is provided in implementations of the disclosure. The method is applicable to the UE and the method includes: determining validity of a TCI and/or a TA. In a second aspect, a UE is provided in implementations of the disclosure. The UE includes a processor, a memory, a communication interface, and one or more programs. The one or more programs are stored in the memory. The one or more programs are configured to be executed by the processor and include instructions configured to perform the operations in the first aspect of implementations of the disclosure. In a third aspect, a non-transitory computer-readable storage medium is provided in implementations of the disclosure. The computer-readable storage medium stores computer programs for electronic data interchange (EDI), where the computer programs are operable with a computer to perform part or all of the operations described in the first aspect of implementations of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS To describe technical solutions in implementations of the disclosure or the related art more clearly, the following will give a brief introduction to accompanying drawings required for describing implementations or the related art. Apparently, the accompanying drawings hereinafter described are merely some implementations of the disclosure. Based on these accompanying drawings, those of ordinary skill in the art can also obtain other drawings without creative effort. FIG. 1 is a schematic flowchart illustrating a method for data transmission processing provided in implementations of the disclosure. FIG. 2 is a schematic structural diagram of a user equipment (UE) provided in implementations of the disclosure. FIG. 3 is a schematic block diagram of functional units of an apparatus for data transmission processing provided in implementations of the disclosure. DETAILED DESCRIPTION The terms “first”, “second”, and the like used in the specification, the claims, and the accompany drawings of the disclosure are used to distinguish different objects rather than describe a particular order. The terms “include”, “comprise”, and “have” as well as variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus including a series of steps or units is not limited to the listed steps or units, it can optionally include other