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User device and base station device

A technology for user equipment and base stations, which is applied to the separation device of transmission path, multiple use of transmission path, wireless communication, etc.

Pending Publication Date: 2021-09-03
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2-step random access procedure In order to perform a contention-based random access procedure, contention resolution needs to be performed

Method used

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  • User device and base station device
  • User device and base station device
  • User device and base station device

Examples

Experimental program
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Embodiment Construction

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the embodiment described below is an example, and the embodiment to which this invention is applied is not limited to the following embodiment.

[0027] When performing the operation of the wireless communication system according to the embodiment of the present invention, existing technologies are appropriately used. Wherein, the existing technology is, for example, the existing LTE, but is not limited to the existing LTE. In addition, the term "LTE" used in this specification is assumed to have a broad meaning including LTE-Advanced and LTE-Advanced and subsequent schemes (eg, NR) unless otherwise specified.

[0028] In addition, in the embodiment of the present invention described below, SS (Synchronization signal (Synchronization signal)), PSS (Primary synchronization signal (Primary SS)), SSS (Secondary synchronization signal (Synchronization signal) S...

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Abstract

This user device is provided with: a transmission unit that transmits, to a base station device, a random access preamble or an identifier of the user device itself, in a two-step random access procedure; a reception unit that receives, from the base station device, a response signal corresponding to at least one of the random access preamble and the identifier of the user device itself; and a control unit that executes collision resolution on the basis of the response signal.

Description

technical field [0001] The present invention relates to user equipment and base station equipment in a wireless communication system. Background technique [0002] NR (New Radio) (also referred to as "5G"), the successor system of LTE (Long Term Evolution), is studying a system that satisfies large capacity and high-speed data transmission as requirements. Technologies for speed, low delay, simultaneous connection of multiple terminals, low cost, power saving, etc. (for example, Non-Patent Document 1). [0003] In NR, as in LTE, random access is performed to establish synchronization between a user equipment and a base station or to request scheduling. The random access process includes a contention-based random access process (contention based random access (CBRA: Contention based random access)) and a non-contention type random access (contention free random access (CFRA: Contention free random access)) These two (for example, Non-Patent Document 2). [0004] prior art ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08
CPCH04W74/0833H04W74/006H04W74/004H04W74/002H04W76/28H04W74/085H04L5/0048H04L5/001H04L5/0091H04L5/0023H04W72/23H04W74/0841H04W88/02H04W88/08H04W74/0866
Inventor 内野彻高桥秀明
Owner NTT DOCOMO INC