WO2021012991A1 - Procédés d'accès aléatoire, d'envoi d'informations et de configuration de ressources, dispositif côté réseau, et terminal - Google Patents

Procédés d'accès aléatoire, d'envoi d'informations et de configuration de ressources, dispositif côté réseau, et terminal Download PDF

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Publication number
WO2021012991A1
WO2021012991A1 PCT/CN2020/101878 CN2020101878W WO2021012991A1 WO 2021012991 A1 WO2021012991 A1 WO 2021012991A1 CN 2020101878 W CN2020101878 W CN 2020101878W WO 2021012991 A1 WO2021012991 A1 WO 2021012991A1
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WO
WIPO (PCT)
Prior art keywords
random access
side device
terminal
network side
cell
Prior art date
Application number
PCT/CN2020/101878
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English (en)
Chinese (zh)
Inventor
李男
陈宁宇
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团有限公司
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Application filed by 中国移动通信有限公司研究院, 中国移动通信集团有限公司 filed Critical 中国移动通信有限公司研究院
Publication of WO2021012991A1 publication Critical patent/WO2021012991A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • 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

  • a 2-step RACH process is introduced.
  • the 2-step RACH combines MSG 1 and MSG 3 in the original 4-step RACH in one step, called MSG A; MSG 2 and MSG 4 are sent in one step. , Called MSG B.
  • MSG A MSG 1 and MSG 3 in the original 4-step RACH
  • MSG 2 and MSG 4 are sent in one step.
  • Called MSG B MSG 2 and MSG 4
  • the new cell the terminal accesses may not support two-step random access, which affects random access Access efficiency.
  • embodiments of the present disclosure provide a random access method for terminals supporting two-step random access, and the random access method includes:
  • a random access type determination strategy Determining a random access type when the terminal switches to the first network side device according to a random access type determination strategy, where the random access type determination strategy is at least related to whether the terminal supports two-step random access;
  • embodiments of the present disclosure provide a network-side device, where the network-side device is a first network-side device and includes a processor and a transceiver:
  • the first receiving module is configured to receive the first random access type support information sent by the terminal;
  • the terminal selects the first cell from the cell list for random access according to a cell selection strategy, and the cell selection strategy is at least related to whether the cell supports two-step random access.
  • the terminal determines the first cell according to the cell selection strategy, it considers whether the first cell supports two-step random access, so that the cell that supports two-step random access can be prioritized as the first cell to improve random access efficiency .
  • FIG. 10 is the second structural diagram of a network side device provided by an embodiment of the present disclosure.
  • the cell selection strategy may also be: if there is a cell that supports two-step random access in the cell list, the first cell is selected from the cells that support two-step random access. In other words, when there is a cell that supports two-step random access in the cell list, the terminal directly selects the first cell from the cells that support two-step random access to ensure that the first cell supports two-step random access to improve random access Access efficiency.
  • the cell selection strategy can be the selection strategy of the terminal during cell selection or cell reselection.
  • a system message is received, the system message carrying the random access type support information of the cell.
  • Step 201 Broadcast a system message, where the system message carries the random access type support information of the cell.
  • the first network side device configures resources for the two-step random access for the terminal.
  • the target base station configures the UE with contention-based two-step random access resources; if the UE supports non-contention-based two-step random access, the target base station configures the UE based on Non-competitive two-step random access resources.
  • cell selection strategy is specifically:
  • the second terminal 700 can implement each process implemented by the terminal in the method embodiment shown in FIG. 4, and to avoid repetition, details are not described herein again.
  • the processor 810 is configured to select the first cell from the cell list for random access according to a cell selection strategy, and the cell selection strategy is at least related to whether the cell supports two-step random access .
  • FIG. 9 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure.
  • the network side device 900 includes:

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

Abstract

La présente invention concerne des procédés d'accès aléatoire, d'envoi d'informations et de configuration de ressources, un dispositif côté réseau et un terminal. Le procédé d'accès aléatoire comprend l'étape suivante : un terminal sélectionne une première cellule parmi une liste de cellules, selon une politique de sélection de cellule, de façon à effectuer un accès aléatoire, la politique de sélection de cellule étant au moins liée à la question de savoir si une cellule prend en charge un accès aléatoire en deux étapes. Lors de la détermination de la première cellule, selon la politique de sélection de cellule, le terminal vérifie si la première cellule prend en charge un accès aléatoire en deux étapes afin d'établir un ordre de priorité en utilisant une cellule qui prend en charge un accès aléatoire en deux étapes, en tant que première cellule, de façon à augmenter l'efficacité d'accès aléatoire.
PCT/CN2020/101878 2019-07-19 2020-07-14 Procédés d'accès aléatoire, d'envoi d'informations et de configuration de ressources, dispositif côté réseau, et terminal WO2021012991A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910655326.0A CN112243276A (zh) 2019-07-19 2019-07-19 随机接入、信息发送、资源配置方法、网络侧设备及终端
CN201910655326.0 2019-07-19

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WO2021012991A1 true WO2021012991A1 (fr) 2021-01-28

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PCT/CN2020/101878 WO2021012991A1 (fr) 2019-07-19 2020-07-14 Procédés d'accès aléatoire, d'envoi d'informations et de configuration de ressources, dispositif côté réseau, et terminal

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CN (1) CN112243276A (fr)
WO (1) WO2021012991A1 (fr)

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN102118833A (zh) * 2011-03-04 2011-07-06 电信科学技术研究院 一种小区接入指示方法、小区选择方法和设备
CN106899964A (zh) * 2017-02-09 2017-06-27 北京小米移动软件有限公司 终端能力信息传递方法及装置
WO2017118210A1 (fr) * 2016-01-06 2017-07-13 中兴通讯股份有限公司 Procédé, dispositif et système de sélection de cellule
CN110012519A (zh) * 2018-01-05 2019-07-12 中国移动通信有限公司研究院 小区选择方法及终端

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US10142980B2 (en) * 2016-02-26 2018-11-27 Qualcomm Incorporated Discovery reference signal transmission window detection and discovery reference signal measurement configuration
US10433342B2 (en) * 2016-10-19 2019-10-01 Qualcomm Incorporated Enhanced random access channel (RACH) procedure
US10405342B2 (en) * 2016-11-01 2019-09-03 Qualcomm Incorporated Two step random access procedure
US11191108B2 (en) * 2016-11-14 2021-11-30 Qualcomm Incorporated Two step random-access channel (RACH) procedure in millimeter wave (MMW)
CN109246754B (zh) * 2017-01-04 2019-10-22 华为技术有限公司 一种通信方法及其终端设备、网络设备
CN108616922B (zh) * 2017-01-06 2021-07-20 华为技术有限公司 一种免授权资源分配的方法、用户设备以及网络设备
KR102505734B1 (ko) * 2017-01-13 2023-03-03 모토로라 모빌리티 엘엘씨 캐리어 주파수에서 경합 기반 랜덤 액세스를 수행하기 위한 방법 및 장치
US9949298B1 (en) * 2017-05-04 2018-04-17 At&T Intellectual Property I, L.P. Facilitating signaling and transmission protocols for enhanced beam management for initial access
CN109644326B (zh) * 2018-10-31 2023-01-10 北京小米移动软件有限公司 传输随机接入指示信息的方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102118833A (zh) * 2011-03-04 2011-07-06 电信科学技术研究院 一种小区接入指示方法、小区选择方法和设备
WO2017118210A1 (fr) * 2016-01-06 2017-07-13 中兴通讯股份有限公司 Procédé, dispositif et système de sélection de cellule
CN106899964A (zh) * 2017-02-09 2017-06-27 北京小米移动软件有限公司 终端能力信息传递方法及装置
CN110012519A (zh) * 2018-01-05 2019-07-12 中国移动通信有限公司研究院 小区选择方法及终端

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