WO2023155594A1 - Procédé et appareil d'envoi de message msg3, procédé et appareil de réception de message msg3, dispositif et support de stockage lisible - Google Patents

Procédé et appareil d'envoi de message msg3, procédé et appareil de réception de message msg3, dispositif et support de stockage lisible Download PDF

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Publication number
WO2023155594A1
WO2023155594A1 PCT/CN2022/141057 CN2022141057W WO2023155594A1 WO 2023155594 A1 WO2023155594 A1 WO 2023155594A1 CN 2022141057 W CN2022141057 W CN 2022141057W WO 2023155594 A1 WO2023155594 A1 WO 2023155594A1
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WO
WIPO (PCT)
Prior art keywords
msg3
retransmission
initial transmission
uplink beam
transmission
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PCT/CN2022/141057
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English (en)
Chinese (zh)
Inventor
费永强
高雪娟
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大唐移动通信设备有限公司
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Publication of WO2023155594A1 publication Critical patent/WO2023155594A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the base station may instruct/schedule the terminal to repeatedly send a physical random access channel (Physical Random Access Channel, PRACH).
  • PRACH Physical Random Access Channel
  • the beams for repeatedly sending the PRACH may be the same or different.
  • the base station may also instruct/schedule the terminal to repeatedly send the Msg3 physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).
  • Msg3 bears the RRC establishment request message, and its coverage performance directly affects the success probability of random access.
  • the number of repetitions of PRACH and the number of repetitions of Msg3 PUSCH may be the same or different.
  • the determining the uplink beam for retransmitting Msg3 according to the uplink beam for initially transmitting Msg3 includes:
  • the indication of the network equipment includes one or more of the following:
  • RAR information is used to indicate any of the following:
  • the instruction of the network device includes DCI scrambled by the temporarily used cell radio network temporary identity TC-RNTI;
  • the predefined rules include one or more of the following:
  • the uplink beam for the initial transmission of Msg3 or the retransmission of Msg3 is determined according to the SSB selected when the terminal initiates random access;
  • the initial transmission of Msg3 or retransmission of Msg3 is non-repetitive transmission
  • the initial transmission of Msg3 or retransmission of Msg3 is the same;
  • the uplink beams of the initially transmitted Msg3 are at least partly different, according to the determination method of the initially transmitted Msg3 uplink beam, determine the retransmitted Msg3 uplink beam
  • the uplink beam for the initial transmission of the Msg3 or the retransmission of the Msg3 is determined according to the physical random access channel PRACH sent when the terminal initiates random access.
  • the uplink beam for the initial transmission of Msg3 or the retransmission of Msg3 is determined according to the SSB selected when the terminal initiates random access, including:
  • the initial transmission Msg3 or retransmission Msg3 is non-repeated transmission
  • the initial transmission Msg3 or retransmission The uplink beam for transmitting Msg3 is the same as the predefined PRACH uplink beam
  • the uplink beam of the initial transmission Msg3 or the retransmission Msg3 is determined according to the SSB selected when the terminal initiates random access ;
  • Rule 1-b2-1 According to one or more items of the SSB selected when the terminal initiates random access, and the cyclic order of the SSB actually sent by the network device, determine the initial transmission Msg3 or the retransmission Msg3 corresponding to SSB, and then according to the SSB corresponding to the repeated transmission of the initial transmission Msg3 or the retransmission Msg3, determine the uplink beam of the repeated transmission of the initial transmission Msg3 or the retransmission Msg3;
  • the uplink beams of the PRACHs that are repeatedly transmitted are at least partially different, including but not limited to, the uplink beams of any one PRACH are different from the uplink beams of other PRACHs.
  • the determining the uplink beam for retransmitting Msg3 according to the uplink beam for initially transmitting Msg3 includes one of the following:
  • the method for determining the uplink beam for the retransmission of Msg3 may be the same as the method for determining the uplink beam for the initial transmission of Msg3.
  • DCI Downlink Control Information
  • Step 402 Receive the initial transmission Msg3, or receive the retransmission Msg3.
  • the uplink beam for the initial transmission of Msg3 or the retransmission of Msg3 is determined according to the SSB selected when the terminal initiates random access;
  • the uplink beam of the initial transmission Msg3 or the retransmission Msg3 is determined according to the SSB selected when the terminal initiates random access and the SSB actually sent by the network device, including:
  • the cyclic order of the SSBs actually sent by the network device determines the SSB corresponding to the initial transmission Msg3 or the retransmission Msg3 of the repeated transmission, and then determine the repeated transmission of the initial transmission Msg3 according to the SSB corresponding to the repeated transmission of the initial transmission Msg3 or the retransmission Msg3 Or retransmit the uplink beam of Msg3.
  • the determining the uplink beam for retransmitting Msg3 according to the uplink beam for initially transmitting Msg3 includes:
  • indicating to the terminal the uplink beam of the initial transmission of Msg3 includes:
  • Embodiments of the present disclosure are described below through Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment 4.
  • Case 1-1 The initial transmission of Msg3 is a non-repeated transmission.
  • the best beam for receiving the SSB may be used as the uplink beam for sending the initial transmission Msg3.
  • Method 2 According to one or more of the SSB selected when the UE initiates random access and the SSB actually sent by the base station, determine the uplink beam for the initial transmission of Msg3 for repeated transmission;
  • sequence of the cyclic index of the SSB actually sent by the base station may represent the cyclic sequence of the SSB actually sent by the network device.
  • the uplink beam of the initial transmission Msg3 that is repeatedly transmitted can be determined according to the SSB actually sent by the base station, and the sequence of the cyclic index for the SSB actually sent by the base station is 0-1-2-3-0-1-2-3..., then
  • the 1st, 2nd...K initial transmission Msg3 determines the uplink beam according to the 1st, 2nd...K indexes of the cyclic index sequence 0-1-2-3-0-1-2-3...; that is, the first The initial transmission Msg3 determines the uplink beam according to SSB0, the second initial transmission Msg3 determines the uplink beam according to SSB1, ..., and so on.
  • Method 3 Determine multiple repeated transmissions according to one or more of the SSB selected when the UE initiates random access, the SSB actually sent by the base station, the number of SSBs actually sent by the base station, and the number of repetitions of the initial Msg3 transmission The uplink beam of the initial transmission of Msg3.
  • SSB0 in the figure corresponds to Msg3 4 and Msg3 5
  • SSB1 corresponds to Msg3 0 and Msg3 1
  • SSB2 corresponds to Msg3 2 and Msg3 3.
  • the uplink beam for Msg3 corresponding to different SSBs may also be different. If one Msg3 corresponds to multiple SSBs above, the UE may select one of the corresponding multiple SSBs to determine the uplink beam when sending the Msg3.
  • the second type of method in this embodiment is mainly related to PRACH.
  • the uplink beam for initially transmitting Msg3 is determined according to the uplink beam of the PRACH sent by the UE and a predefined rule.
  • Case 2-1 The PRACH is non-repeated transmission, or the PRACH is repeated transmission and the uplink beams of each PRACH are the same.
  • the uplink beams for the repeated transmission of the PRACHs are different, and it can also be considered that each PRACH corresponds to a different SSB.
  • the uplink beam of the initial transmission of Msg3 is the same as the uplink beam of a predefined PRACH.
  • the first indication information may indicate one of several association patterns.
  • the associated pattern refers to the pattern of the retransmitted initial Msg3 and its associated PRACH.
  • the association style can be predefined, or indicated by the base station through system information broadcast. For example, suppose a Msg3 is repeatedly transmitted 3 times, and there are 4 PRACHs (PRACH0, PRACH1, PRACH2, PRACH3) and several association patterns can be predefined:
  • the three initial transmission Msg3 that are repeatedly transmitted are associated with PRACH1, PRACH2, and PRACH3 in sequence, and each initial transmission Msg3 can determine an uplink beam according to its associated PRACH.
  • Embodiment 3 the uplink beams for retransmitting Msg3 and the uplink beams for initial transmission of Msg3 may be different and independent of each other.
  • the uplink beam for retransmitting Msg3 is associated with the uplink beam for initial transmission of Msg3. More precisely, the uplink beam for retransmitting Msg3 is the same as the uplink beam for initially transmitting Msg3, or the method for determining the uplink beam for retransmitting Msg3 may be the same as the method for determining the uplink beam for initially transmitting Msg3.
  • the uplink beam of (each retransmission) Msg3 is the same as the uplink beam of the initial transmission of Msg3.
  • the uplink beam it uses is the same as the uplink beam used when the UE initially transmits the Msg3.
  • This design is simple to implement, and is especially suitable for scenarios where the UE moves slowly.
  • the UE has used the optimal uplink beam when initially transmitting Msg3, and when the base station schedules the UE to retransmit Msg3, because the UE moves slowly and its position is basically unchanged, the optimal beam may also be It has not changed.
  • better performance can still be obtained by using the uplink beam for the initial transmission of Msg3 as the uplink beam for retransmission of Msg3.
  • multiple repeatedly transmitted Msg3 of retransmitting Msg3 may correspond to different SSBs (for example, through the method in Embodiment 1) or correspond to different PRACHs, so the uplink beams may also be different.
  • the "determining method" of the uplink beam for the retransmission of Msg3 is the same as the "determining method" of the uplink beam for the initial transmission of Msg3.
  • the initial transmission of Msg3 is repeated transmission, and multiple uplink beams of Msg3 are determined according to the second method of case 1-2 of Embodiment 1, and each uplink beam may be different;
  • method 2 determines multiple uplink beams for retransmitting Msg3, and each uplink beam may be different. It should be noted that in this case, only the “determination method” is the same, and it does not mean that the "number of repetitions" is the same. The number of repetitions can be the same or different.
  • the base station can use the optimal beam for reception and demodulation respectively, and can obtain beam diversity gain and improve coverage performance when the channel changes rapidly.
  • the second indication information can be The bearer is sent in the DCI scrambled by the TC-RNTI (not the RAR message, or the DCI that schedules the RAR).
  • the uplink beam for retransmitting Msg3 is associated with the uplink beam for initial transmission of Msg3. More precisely, it uses an explicit indication information, which is recorded as the second indication information, which indicates one or more indexes of the reference initial transmission Msg3; the uplink beam of the retransmission Msg3 is based on the reference initial transmission indicated by the second indication information. The uplink beam of Msg3 is determined.
  • the second indication information may indicate one of several association patterns.
  • the associated style refers to the style of the retransmitted Msg3 that is repeatedly transmitted and its associated initial transmitted Msg3.
  • the association style can be predefined, or indicated by the base station through system information broadcast. For example, suppose a retransmission Msg3 is repeated 3 times, and there are 4 initial Msg3 PUSCHs (first Msg3 PUSCH 0, first Msg3 PUSCH 1, first Msg3 PUSCH 2, first Msg3 PUSCH 3), which can be predefined Several associated styles:
  • the network device can flexibly instruct the UE to transmit the uplink beam when retransmitting Msg3 according to requirements, so that the most suitable receiving strategy can be selected when receiving retransmission Msg3, such as combining or joint detection, or boosting the beam Diversity gain, thereby improving the coverage performance of Msg3.
  • the method of this embodiment can also be considered to determine the uplink beam of the PRACH through the combination of "predefined rules” and “instructions from network devices", that is, through “predefined rules and network device instructions”. Indicate” to determine the uplink beam for retransmitting Msg3.
  • an embodiment of the present disclosure provides an apparatus for sending Msg3, which is applied to a terminal.
  • the apparatus 1000 includes:
  • the first processing module 1001 is configured to determine an uplink beam for initial transmission of Msg3 or retransmission of Msg3 according to predefined rules and/or instructions of network equipment;
  • the first sending module 1002 is configured to send the initial transmission Msg3 through the uplink beam of the initial transmission Msg3, or send the retransmission Msg3 through the uplink beam of the retransmission Msg3.
  • the terminal can determine the uplink beam for initial transmission of Msg3 or retransmission of Msg3 according to predefined rules and/or instructions of network equipment (explicit signaling or implicit signaling), and the network equipment can also An appropriate detection scheme is selected according to the determined uplink beam of the Msg3, thereby improving the detection performance of the Msg3, and further improving the coverage performance of the network device.
  • the predefined rules include one or more of the following:
  • the uplink beam for the initial transmission of Msg3 or the retransmission of Msg3 is determined according to the PRACH sent when the terminal initiates random access.
  • the above rule 1 includes at least one of the following methods:
  • the uplink beam of the initial transmission Msg3 or the retransmission Msg3 is determined according to the SSB selected when the terminal initiates random access ;
  • the uplink beam of the initial transmission Msg3 or the retransmission Msg3 is determined according to the SSB selected when the terminal initiates random access, And the uplink beams of the initial transmission Msg3 or the retransmission Msg3 of all repeated transmissions are the same;
  • the uplink beam of the initial transmission Msg3 or the retransmission Msg3 of the repeated transmission is based on the SSB selected when the terminal initiates random access , and one or more of the SSB actually sent by the network device, and the uplink beams of the initial transmission Msg3 or the retransmission Msg3 of the repeated transmission are all the same or at least partly different.
  • the uplink beams of the initial transmission Msg3 or the retransmission Msg3 of the repeated transmission may be different; according to the SSB selected when the UE initiates random access and the SSB actually sent by the network device, determine the multiple repeated transmissions of the initial transmission Msg3 or Msg3 Retransmit the uplink beam of Msg3.
  • the PRACH is repeated transmission and the PRACH uplink beams of each repeated transmission are at least partially different, and the uplink beam of the initial transmission Msg3 or the retransmission Msg3 of the non-repeated transmission is the same as the uplink beam of the predefined PRACH (such as the first PRACH).
  • Rule 2-c-1) Determine the PRACH corresponding to the initial transmission Msg3 or the retransmission Msg3 according to the cyclic sequence of the uplink beams of the repeated transmission of the PRACH, and then determine the PRACH corresponding to the repeated transmission of the initial transmission Msg3 or the retransmission Msg3 , determining the uplink beam of the initial transmission Msg3 or the retransmission Msg3 for repeated transmission;
  • Rule 2-c-2 According to one or more of the relationship between the cyclic order of the uplink beams of the PRACH for repeated transmission and the number of PRACHs and the number of repetitions of the initial transmission Msg3 or retransmission Msg3, determine the repeated transmission The PRACH corresponding to the initial transmission Msg3 or the retransmission Msg3, and then according to the PRACH corresponding to the repeated transmission of the initial transmission Msg3 or the retransmission Msg3, determine the uplink beam of the repeated transmission of the initial transmission Msg3 or the retransmission Msg3.
  • the determination of the uplink beam for retransmitting Msg3 according to predefined rules and/or network equipment instructions includes:
  • the method for determining the uplink beam for the retransmission of Msg3 may be the same as the method for determining the uplink beam for the initial transmission of Msg3.
  • the RAR information, DCI or system message for scheduling RAR is used to indicate any of the following:
  • the instruction of the network device when the uplink beam for retransmitting Msg3 is determined according to the instruction of the network device, the instruction of the network device includes DCI scrambled by the TC-RNTI.
  • an embodiment of the present disclosure provides an apparatus for receiving Msg3, which is applied to a network device.
  • the apparatus 1100 includes:
  • the uplink beam of the initial transmission of Msg3 or retransmission of Msg3 is determined according to the SSB selected when the terminal initiates random access, and all repeated transmissions
  • the uplink beams of the initial transmission or retransmission of Msg3 are the same;
  • the repeated transmission of the initial transmission Msg3 or the retransmission Msg3 is repeated transmission
  • the repeated transmission of the initial transmission Msg3 or the retransmission Msg3 The uplink beam is based on the repetition
  • the uplink beam of the transmitted PRACH is determined, and the uplink beams of the initial transmission Msg3 or the retransmission Msg3 of each repeated transmission are the same or at least partly different.
  • the uplink beam of the initial transmission Msg3 or the retransmission Msg3 is determined according to the uplink beam of the PRACH for repeated transmission, including:

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

Abstract

La présente divulgation concerne un procédé et un appareil d'envoi de message Msg3, un procédé et un appareil de réception de message Msg3, un dispositif et un support de stockage lisible. Le procédé d'envoi de message Msg3 comprend : selon une règle prédéfinie et/ou une indication d'un dispositif de réseau, la détermination d'un faisceau de liaison montante d'un message Msg3 initialement transmis ou d'un message Msg3 retransmis ; et l'envoi du message Msg3 initialement transmis au moyen du faisceau de liaison montante du message Msg3 initialement transmis, ou l'envoi du message Msg3 retransmis au moyen du faisceau de liaison montante du message Msg3 retransmis.
PCT/CN2022/141057 2022-02-18 2022-12-22 Procédé et appareil d'envoi de message msg3, procédé et appareil de réception de message msg3, dispositif et support de stockage lisible WO2023155594A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210149584.3 2022-02-18
CN202210149584.3A CN116684043A (zh) 2022-02-18 2022-02-18 Msg3发送方法、Msg3接收方法、装置、设备及可读存储介质

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109089322A (zh) * 2017-06-14 2018-12-25 维沃移动通信有限公司 一种上行多波束传输方法、终端及网络设备
CN110809901A (zh) * 2018-02-14 2020-02-18 Oppo广东移动通信有限公司 物理上行共享信道传输方法和终端设备
CN110838861A (zh) * 2018-08-17 2020-02-25 电信科学技术研究院有限公司 信号传输方法、波束确定方法及其装置
WO2021088692A1 (fr) * 2019-11-08 2021-05-14 华为技术有限公司 Procédé et appareil d'établissement de faisceau
CN113395780A (zh) * 2020-03-13 2021-09-14 大唐移动通信设备有限公司 上行信道传输方法、装置、基站、终端及存储介质

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109089322A (zh) * 2017-06-14 2018-12-25 维沃移动通信有限公司 一种上行多波束传输方法、终端及网络设备
CN110809901A (zh) * 2018-02-14 2020-02-18 Oppo广东移动通信有限公司 物理上行共享信道传输方法和终端设备
CN110838861A (zh) * 2018-08-17 2020-02-25 电信科学技术研究院有限公司 信号传输方法、波束确定方法及其装置
WO2021088692A1 (fr) * 2019-11-08 2021-05-14 华为技术有限公司 Procédé et appareil d'établissement de faisceau
CN113395780A (zh) * 2020-03-13 2021-09-14 大唐移动通信设备有限公司 上行信道传输方法、装置、基站、终端及存储介质

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