WO2024007832A1 - Procédé et équipement utilisateur d'application de commande d'avance temporelle pour de multiples points de transmission-réception - Google Patents

Procédé et équipement utilisateur d'application de commande d'avance temporelle pour de multiples points de transmission-réception Download PDF

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Publication number
WO2024007832A1
WO2024007832A1 PCT/CN2023/100153 CN2023100153W WO2024007832A1 WO 2024007832 A1 WO2024007832 A1 WO 2024007832A1 CN 2023100153 W CN2023100153 W CN 2023100153W WO 2024007832 A1 WO2024007832 A1 WO 2024007832A1
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WO
WIPO (PCT)
Prior art keywords
tag
indication
coreset
coresetpoolindex
parameter
Prior art date
Application number
PCT/CN2023/100153
Other languages
English (en)
Inventor
Cheng-Rung Tsai
Din-Hwa Huang
Original Assignee
Mediatek Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mediatek Inc. filed Critical Mediatek Inc.
Publication of WO2024007832A1 publication Critical patent/WO2024007832A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the disclosed embodiments relate generally to wireless communication, and, more particularly, to method and user equipment for applying timing advance (TA) command for multiple transmission reception points (TRPs) .
  • TA timing advance
  • TRPs transmission reception points
  • the UE in order to synchronize with a base station (BS) and/or TRP (s) for uplink (UL) transmission, the UE can be configured with a TA value associated with one TA group (TAG) in one serving cell supporting multiple TRPs.
  • TAG TA group
  • a plurality of TAGs may be configured in one serving cell for the UE, and it is ambiguous for the UE that, in response to receiving a random access response (RAR) indicating one TA value from the BS and/or the TRP (s) , which TAG should be applied with the received TA value in the same serving cell.
  • RAR random access response
  • a UE can receive a configuration of a control resource set (CORESET) as well as an indication associated with a timing advance group (TAG) Identification (ID) . Then, the UE can receive a downlink control information (DCI) indicating a physical downlink control channel (PDCCH) order on the CORESET. Based on the PDCCH order, the UE can perform a physical random access channel (PRACH) transmission to a BS (or a TRP) , and the BS (or a TRP) can transmit a random access response (RAR) including a TA command in response to receiving the PRACH transmission from the UE. Accordingly, the UE can apply the TA command to a first TAG indicated by the TAG ID.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • PRACH physical random access channel
  • RAR random access response
  • the UE can apply the TA command to a first TAG indicated by the TAG ID.
  • Figure 1 illustrates an exemplary 5G NR network for a plurality of TRPs in accordance with aspects of the current invention.
  • FIG. 2 is a simplified block diagram of one TRP and the UE in accordance with aspects of the current invention.
  • Figure 3 illustrates one proposed scenario for a UE applying a TA command for one TRP in accordance with aspects of the current invention.
  • Figure 4 illustrates another proposed scenario for a UE applying a TA command for one TRP in accordance with aspects of the current invention.
  • Figure 5 is a flow chart of a method for a UE applying a TA command for a plurality of TRPs in accordance with aspects of the current invention.
  • Figure 6 is a flow chart of a method for a BS configuring a TA command for a plurality of TRPs in accordance with aspects of the current invention.
  • Figure 7 is a flow chart of a method for a UE applying an initial TA value for a plurality of TRPs in accordance with aspects of the current invention.
  • Figure 8 is a flow chart of another method for a UE applying an initial TA value for a plurality of TRPs in accordance with aspects of the current invention.
  • FIG. 1 illustrates an exemplary 5G NR network 100 for a plurality of TRPs in accordance with aspects of the current invention.
  • the 5G NR network 100 includes a cell 110 that covers at least one user equipment (UE) 130 communicatively connected to a plurality of transmission reception points (TRPs) 120.
  • Each TRP 120 may provide radio access using a Radio Access Technology (RAT) (e.g., the 5G NR technology) .
  • RAT Radio Access Technology
  • the UE 110 may be a smart phone, a wearable device, an Internet of Things (IoT) device, and a tablet, etc.
  • UE 110 may be a Notebook (NB) or Personal Computer (PC) inserted or installed with a data card which includes a modem and RF transceiver (s) to provide the functionality of wireless communication.
  • Each TRP 120 being functionally similar to the BS may provide communication coverage for a geographic coverage area in which communications with the UE 130 is supported via a communication link 131.
  • the communication links 131 shown in the 5G NR network 100 may respectively include uplink (UL) transmissions from the UE 130 to the TRPs 120 (e.g., on the Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH) ) or downlink (DL) transmissions from the TRPs 120 to the UE 130 (e.g., on the Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH) ) .
  • the TRPs 120 may communicate with each other via a communication link 121.
  • FIG. 2 is a simplified block diagram of one TRP 120 and the UE 130 in accordance with aspects of the current invention.
  • an antenna 197 transmits and receives radio signal.
  • a radio frequency (RF) transceiver module 196 coupled with the antenna, receives RF signals from the antenna, converts them to baseband signals and sends them to processor 193.
  • RF transceiver 196 also converts received baseband signals from the processor 193, converts them to RF signals, and sends out to antenna 197.
  • Processor 193 processes the received baseband signals and invokes different functional modules and circuits to perform features in the TRP 120.
  • Memory 192 stores program instructions and data 190 to control the operations of the TRP 120.
  • antenna 177 transmits and receives RF signals.
  • RF transceiver module 176 coupled with the antenna, receives RF signals from the antenna, converts them to baseband signals and sends them to processor 173.
  • the RF transceiver 176 also converts received baseband signals from the processor 173, converts them to RF signals, and sends out to antenna 177.
  • Processor 173 processes the received baseband signals and invokes different functional modules and circuits to perform features in the UE 130.
  • Memory 172 stores program instructions and data 170 to control the operations of the UE 130.
  • the TRP 120 and the UE 130 also include several functional modules and circuits that can be implemented and configured to perform embodiments of the present invention.
  • the TRP 120 includes a set of control functional modules and circuit 180.
  • Handling circuit 182 handles a TA command for multiple TRPs and associated with one TAG via a TAG identification (ID) .
  • Configuration and control circuit 181 provides different parameters to configure and control the UE 130.
  • the UE 130 includes a set of control functional modules and circuit 160.
  • Handling circuit 162 handles a TA command for multiple TRPs and associated with one TAG via a TAG ID.
  • Configuration and control circuit 161 handles configuration and control parameters from the TRPs 120.
  • the different functional modules and circuits can be implemented and configured by software, firmware, hardware, and any combination thereof.
  • the function modules and circuits when executed by the processors 193 and 173 (e.g., via executing program codes 190 and 170) , allow the TRPs 120 and the UE 130 to perform embodiments of the present invention.
  • FIG. 3 illustrates one proposed scenario 300 for a UE applying a TA command for one TRP in accordance with aspects of the current invention.
  • the UE is configured with a plurality of TAGs in a serving cell (i.e., one component carrier (CC) )
  • the TRP is functional as a wireless node and/or a BS to wirelessly communicate with the UE.
  • the serving cell supports a plurality of TRPs and the UE is configured with the plurality of TAGs, it is important for the UE to determine which TAG is applied with the received TA command (including an initial TA value) from one TRP for UL transmission in the same serving cell.
  • the proposed scenario 300 demonstrates the determination of the received TA command with which one of TAGs for the UE based on blocks 301 to blocks 304 below.
  • one TRP transmits a configuration of a CORESET (e.g., CORESET #a) to a UE. Then, the TRP transmits a first RRC message indicating a CORESETPoolIndex parameter (e.g., CORESETPoolIndex #a) for the CORESET (e.g., CORESET #a) to the UE, and transmits a second RRC message associating the CORESETPoolIndex parameter (e.g., CORESETPoolIndex #a) with a TAG-ID (e.g., TAG-ID #m) . As that, the UE is implicitly indicated with the TAG-ID (e.g., TAG-ID #m) .
  • TAG-ID e.g., TAG-ID #m
  • the UE receives a DCI (e.g., a DCI format 1_0) on the CORESET (e.g., CORESET #a) , and the DCI indicates a PDCCH order.
  • the UE is triggered to perform a PRACH transmission to the TRP.
  • the TRP transmits an RAR to the UE in response to receiving the PRACH transmission from the UE.
  • the RAR includes a TA command carried by a TA command medium access control (MAC) control element (CE) , and the UE obtains an initial TA value from the TA command.
  • TAG medium access control
  • Figure 4 illustrates another proposed scenario 400 for a UE applying a TA command for one TRP in accordance with aspects of the current invention. Similar to Figure 3, the UE is configured with the plurality of TAGs within the same serving cell for wireless communication. Based on demonstration of blocks 401 to blocks 405, it is proposed for the UE to determine which TAG is applied with the TA command including an initial TA value.
  • one TRP transmits a configuration of a CORESET (e.g., CORESET #a) to a UE.
  • the TRP transmits a plurality of TCI states to the UE, and each of the TCI states is associated with one TAG ID.
  • the TRP transmits an indication to the UE, where the indication indicates which one of the plurality of TCI states is selected/configured (e.g., TCI state #x) for the UE and the selected TCI state (e.g., TCI state #x) configures a QCL assumption for the CORESET (e.g., CORESET #a) .
  • the selected TCI state e.g., TCI state #x implicitly indicates a TAG-ID (e.g., TAG-ID #m) for the UE.
  • the UE receives a DCI (e.g., a DCI format 1_0) on the CORESET (e.g., CORESET #a) , and the DCI indicates a PDCCH order.
  • the UE is triggered to perform a PRACH transmission to the TRP.
  • the TRP transmits an RAR to the UE in response to receiving the PRACH transmission from the UE.
  • the RAR includes a TA command carried by a TA command medium access control (MAC) control element (CE) , and the UE obtains an initial TA value from the TA command.
  • the TRP can transmit indication (e.g., the CORESETPoolIndex parameter in Figure 3 or the selected TCI state in Figure 4) to the UE for implicitly indicating the TAG ID.
  • the TRP can explicitly transmit the TAG ID to the UE.
  • an advanced PDCCH order can carry the TAG ID from the TRP to the UE. Specifically, some of reserved bits or a new DCI field in the advanced PDCCH order can be utilized to indicate the TAG ID.
  • the UE while receiving the DCI configuring the PDCCH order on the CORESET to perform the PRACH transmission to the TRP, the UE can obtain the initial TA value via the RAR in response to performing the PRACH transmission. Accordingly, the UE can apply the initial TA value to the specific TAG by the explicit indication of the TAG ID.
  • one TCI state can be explicitly associated with one TAG ID
  • it is proposed to introduce one TCI activation command e.g., one MAC CE
  • RACH random access channel
  • the UE can initiate the RACH procedure and perform the PRACH transmission to the TRP by the TCI activation command.
  • the UE can obtain the initial TA value, and apply the initial TA value to the specific TAG being associated with the activated TCI state.
  • FIG. 5 is a flow chart of a method for a UE applying a TA command for a plurality of TRPs in accordance with aspects of the current invention.
  • a UE receives a configuration of a CORESET.
  • the UE receives a first indication indicating an association with a TAG ID.
  • the UE receives a DCI on the CORESET, wherein the DCI indicates a PDCCH order.
  • the UE performs a PRACH transmission triggered by the PDCCH order.
  • the UE receives an RAR in response to performing the PRACH transmission, wherein the RAR includes a TA command.
  • the UE applies the TA command to a first TAG indicated by the TAG ID.
  • the first indication includes a CORESETPoolIndex parameter or a TCI state.
  • the UE in an event that the first indication includes the CORESETPoolIndex parameter, the UE further receives a first RRC message indicating the CORESETPoolIndex parameter for the CORESET, and receives a second RRC message associating the CORESETPoolIndex parameter with the TAG ID.
  • the UE in an event that the first indication includes the TCI state, the UE further receives a plurality of TCI states, wherein each of the TCI states is associated with one TAG ID. In addition, the UE further receives a second indication indicating which one of the plurality of TCI states is selected, wherein the selected TCI state configures a QCL assumption for the CORESET.
  • the UE further receives the first indication via the PDCCH order to indicate the association with the TAG ID.
  • the DCI includes a DCI format 1_0 indicating the PDCCH order.
  • the UE is configured with a plurality of TAGs within a serving cell that supports a plurality of TRPs, and one of the plurality of TRPs is configured with the first TAG associating with an initial TA value.
  • FIG. 6 is a flow chart of a method for a BS configuring a TA command for a plurality of TRPs in accordance with aspects of the current invention.
  • a BS e.g., one of a plurality of TRPs transmits a configuration of a CORESET.
  • the BS transmits a first indication indicating an association with a TAG ID.
  • the BS transmits a DCI on the CORESET, wherein the DCI indicates a PDCCH order.
  • the BS receives a PRACH transmission triggered by the PDCCH order.
  • the BS transmits an RAR in response to receiving the PRACH transmission, wherein the RAR includes a TA command.
  • the BS configures the TA command to a first TAG indicated by the TAG ID.
  • the first indication includes a CORESETPoolIndex parameter or a TCI state.
  • the BS in an event that the first indication includes the CORESETPoolIndex parameter, the BS further transmits a first RRC message indicating the CORESETPoolIndex parameter for the CORESET, and transmits a second RRC message configuring the CORESETPoolIndex parameter with the TAG ID.
  • the BS in an event that the first indication includes the TCI state, the BS further transmits a plurality of TCI states, wherein each of the TCI states is associated with one TAG ID.
  • the BS further transmits a second indication indicating which one of the plurality of TCI states is selected, wherein the selected TCI state configures a QCL assumption for the CORESET.
  • the BS further transmits the first indication via the PDCCH order to indicate the association with the TAG ID.
  • the DCI includes a DCI format 1_0 indicating the PDCCH order
  • the BS configures a plurality of TAGs to a UE within a serving cell that supports a plurality of TRPs, and one of the plurality of TRPs is configured with the first TAG associating with the initial TA value.
  • FIG. 7 is a flow chart of a method for a UE applying an initial TA value for a plurality of TRPs in accordance with aspects of the current invention.
  • a UE receives a configuration of a CORESET.
  • the UE receives a first RRC message indicating a CORESETPoolIndex parameter for the CORESET.
  • the UE receives a second RRC message associating the CORESETPoolIndex parameter with a TAG ID.
  • the UE receives a DCI on the CORESET, wherein the DCI indicates a PDCCH order.
  • the UE performs a PRACH transmission triggered by the PDCCH order.
  • step 706 the UE receives an RAR in response to performing the PRACH transmission, wherein the RAR includes a TA command.
  • step 707 the UE applies an initial TA value of the TA command to a first TAG indicated by the TAG ID associated with the CORESETPoolIndex parameter.
  • FIG. 8 is a flow chart of another method for a UE applying an initial TA value for a plurality of TRPs in accordance with aspects of the current invention.
  • a UE receives a configuration of a CORESET.
  • the UE receives a plurality of TCI states, wherein each of the plurality of TCI states is associated with one TAG ID.
  • the UE receives an indication indicating which one of the plurality of TCI states is selected, wherein the selected TCI state configures a QCL assumption for the CORESET.
  • the UE receives a DCI on the CORESET, wherein the DCI indicates a PDCCH order.
  • step 805 the UE performs a PRACH transmission triggered by the PDCCH order.
  • step 806 the UE receives an RAR in response to performing the PRACH transmission, wherein the RAR includes a TA command.
  • step 807 the UE applies an initial TA value of the TA command to a first TAG indicated by the TAG ID of the selected TCI state.

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

Abstract

L'invention concerne des procédés d'UE et de BS d'application de commande de TA pour de multiples TRP. En particulier, un UE peut recevoir une configuration d'un CORESET ainsi qu'une indication associée à un ID de TAG. Ensuite, l'UE peut recevoir des DCI indiquant un ordre de PDCCH sur le CORESET. Sur la base de l'ordre de PDCCH, l'UE peut mettre en œuvre une transmission PRACH à une BS, et la BS peut transmettre une RAR comprenant une commande de TA en réponse à la réception de la transmission PRACH en provenance de l'UE. En conséquence, l'UE peut appliquer la commande de TA à un premier TAG indiquée par l'ID de TAG.
PCT/CN2023/100153 2022-07-06 2023-06-14 Procédé et équipement utilisateur d'application de commande d'avance temporelle pour de multiples points de transmission-réception WO2024007832A1 (fr)

Applications Claiming Priority (2)

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US202263367732P 2022-07-06 2022-07-06
US63/367,732 2022-07-06

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200100201A1 (en) * 2018-09-25 2020-03-26 Huawei Technologies Co., Ltd. Timing Advance in New Radio

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200100201A1 (en) * 2018-09-25 2020-03-26 Huawei Technologies Co., Ltd. Timing Advance in New Radio

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
CATT: "On Two TAs for UL multi-DCI for multi-TRP operation", 3GPP DRAFT; R1-2203442, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20220509 - 20220520, 29 April 2022 (2022-04-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052152974 *
INTEL CORPORATION: "Enhancements to Multi-Beam Operation", 3GPP DRAFT; R1-2103014, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210412 - 20210420, 7 April 2021 (2021-04-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052177822 *
QUALCOMM INCORPORATED: "Supporting two TAs for multi-DCI based mTRP", 3GPP DRAFT; R1-2205015, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20220509 - 20220520, 29 April 2022 (2022-04-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052191691 *
TAO CHEN, MEDIATEK INC.: "UL Tx Timing Management for MTRP Operation", 3GPP DRAFT; R1-2301581; TYPE DISCUSSION; NR_MIMO_EVO_DL_UL-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. 3GPP RAN 1, no. Athens, GR; 20230227 - 20230303, 17 February 2023 (2023-02-17), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052248711 *
VIVO: "Views on two TAs for multi-DCI-based multi-TRP operation", 3GPP DRAFT; R1-2203542, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20220509 - 20220520, 29 April 2022 (2022-04-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052153017 *

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