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Method and device for uplink data transmission in random access process

A technology of random access process and data transmission method, applied in digital transmission systems, transmission systems, error prevention/detection using return channels, etc., can solve the problems of high collision probability, low transmission efficiency, and no support for PUSCH retransmission. , to achieve the effect of improving transmission efficiency, improving transmission reliability, and reducing transmission collision probability

Active Publication Date: 2022-04-22
CHINA ACADEMY OF INFORMATION & COMM
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Problems solved by technology

[0003] This application proposes a method and device for uplink data transmission in the process of random access, which solves the problems of low transmission efficiency, high collision probability, and non-support of PUSCH retransmission in the process of random access in the existing method, and is especially suitable for mobile communication systems 4-step RACH (Random Access Channel, random access channel) technology

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  • Method and device for uplink data transmission in random access process
  • Method and device for uplink data transmission in random access process
  • Method and device for uplink data transmission in random access process

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Embodiment Construction

[0038] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0039]In mobile communication systems, such as 4G LTE and 5G systems, random access technologies including 4-step RACH (Random Access Channel, Random Access Channel) technology are used, and 5 information exchanges between the terminal and the base station are required to complete random access. The entry process is as follows: 1) the terminal sends a...

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Abstract

This application discloses an uplink data transmission method in the random access process, including the following steps: obtain configuration information, get n PUSCH transmission resources and its format;And currently support the maximum transmission block S, get the actual transmission block M, and determine the actual PUSCH transmission resource format from the configured PUSCH transmission resource format, m = min (r, s, k);In order to schedule the number of pussch transmission resources based on RAR, for an integer greater than or equal to 1, n is equal to the duplicate transmission polymerization parameters contained in the configuration information, and R ≤ N, which is the actual effective PUSCH transmission resource.This application also contains the device described as described.This application solves the problem of low transmission efficiency, high collision probability, and no PUSCH transmission problem during the random access process, especially suitable for 4‑Sttep Rach technology with mobile communication systems.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to an uplink data transmission method and device in a random access process. Background technique [0002] In mobile communication systems, such as 4G LTE and 5G systems, random access technologies including 4-step RACH (Random Access Channel, Random Access Channel) technology are used, and 5 information exchanges between the terminal and the base station are required to complete random access. into the process. In the existing 4-step RACH, on the one hand, the amount of data that can be transmitted by the uplink shared channel (PUSCH) resource for Msg3 transmission in the current standard is limited by the default PUSCH resource list in the standard (such as the PUSCH transmission resource list defaultA in 38.213 ) or the public PUSCH resource list configured by the high-level, it is likely that the amount of data that the allocated PUSCH can support is ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08H04W74/00H04L1/18
CPCH04W74/0833H04W74/004H04W74/006H04L1/1867H04L1/1829
Inventor 沈霞杜滢闫志宇焦慧颖刘晓峰魏贵明徐菲
Owner CHINA ACADEMY OF INFORMATION & COMM