Unlock instant, AI-driven research and patent intelligence for your innovation.

A method and device for sending and receiving a preamble sequence of a physical random access channel

A physical random access and preamble technology, which is applied in the field of sending and receiving physical random access channel preamble sequences, can solve problems such as multi-user detection ambiguity, and achieve the effect of ensuring reliability and performance

Active Publication Date: 2019-09-17
DATANG MOBILE COMM EQUIP CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a method and device for sending and receiving a physical random access channel preamble sequence to solve the problem of multi-user detection ambiguity existing in the M-stage (multi-stage) preamble sequence of NRPRACH

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method and device for sending and receiving a preamble sequence of a physical random access channel
  • A method and device for sending and receiving a preamble sequence of a physical random access channel
  • A method and device for sending and receiving a preamble sequence of a physical random access channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The inventor noticed during the invention process:

[0045]The disadvantage of the existing technology is that under the condition that multiple users (UEs) select the same time-frequency resource for transmission, the current M-order preamble sequence scheme has the problem of fuzzy preamble sequence detection. In the following, M=2 is taken as an example for description.

[0046] Assume that there are two UEs in the system that send the 2nd order preamble sequence on the same time-frequency resource. UE 1 selects the 2-stage preamble sequence (a, b), where a and b are the preamble subsequences of the first stage (stage-one) and the second stage (stage-two) respectively; UE 2 selects the 2-stage preamble sequence Preamble sequence (c, d), where c and d are preamble subsequences of stage-one and stage-two respectively. The network will detect two preamble subsequences a and c at stage-one and two preamble subsequences b and d at stage-two. At this time, four possible...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and device for sending and receiving a preamble sequence of a physical random access channel, comprising: sending the preamble subsequence after scrambling, and the preamble subsequence is a cycle of the preamble subsequence sent in the previous stage The shift value is scrambled. When receiving, the descrambling operation is performed according to the cyclic shift value of the preamble subsequence received in the previous stage; the preamble subsequence detected after the descrambling operation is determined to belong to the same preamble sequence as the preamble subsequence received in the previous stage stage received preamble subsequence. By adopting the present invention, it can be accurately judged whether each preamble subsequence belongs to the same preamble sequence. Therefore, it solves the problem of ambiguity in the M-order preamble sequence scheme of the next-generation wireless communication physical random access channel under the condition that multiple users select the same time-frequency resource for transmission, and can effectively guarantee the reliability and performance of the preamble sequence scheme. .

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for sending and receiving a preamble sequence of a physical random access channel. Background technique [0002] In the research of NR (Next generation Radio, next-generation wireless communication) PRACH (Physical Random Access Channel, Physical Random Access Channel) preamble sequence, in order to further improve the detection performance of the preamble and reduce the collision probability of the short preamble sequence, it is proposed A multi-stage (M order) preamble sequence design scheme is proposed. Wherein, an M-order preamble sequence is composed of combinations of M preamble subsequences, and is used for a random access Msg1 transmission. A UE (User Equipment, user equipment) selects an M-order preamble sequence from a predefined or network-configured M-order preamble sequence set, and transmits it on a single time-frequency r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W74/08H04J13/00
CPCH04J13/0062H04W72/0466H04W74/0866H04L27/2613H04W74/0833H04L5/0016H04J13/0022H04L5/0048H04L27/2607H04L25/03866H04W74/002
Inventor 任斌达人郑方政托尼
Owner DATANG MOBILE COMM EQUIP CO LTD