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Method and device in wireless communication

A wireless signal and signaling technology, applied in the direction of wireless communication, synchronization device, digital transmission system, etc., can solve the problem of high complexity of synchronization signal detection, and achieve the effect of low signaling overhead

Active Publication Date: 2020-07-31
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the above-mentioned synchronous signal detection complexity is too high, the present invention provides a design scheme

Method used

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  • Method and device in wireless communication
  • Method and device in wireless communication
  • Method and device in wireless communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] Embodiment 1 illustrates the flow chart of wireless signal downlink transmission, as shown in the attached figure 1 shown. attached figure 1 In , the base station N1 is the maintenance base station of the serving cell of the UE U2.

[0120] for base station N1 , in step S11, the first wireless signal is sent on the first time-frequency resource, in step S12, the first signaling is sent, and in step S13, the second wireless signal is sent on the second time-frequency resource.

[0121] for UE U2 , receiving a first wireless signal on a first time-frequency resource in step S21, receiving a first signaling in step S22, and receiving a second wireless signal on a second time-frequency resource in step S23.

[0122] In Embodiment 1, the first wireless signal is generated by a first sequence, and the first sequence is a complex sequence in a target sequence pair, and the target sequence pair is a candidate sequence pair among X candidate sequence pairs , the X is a po...

Embodiment 2

[0139] Embodiment 2 has illustrated the first sequence schematic diagram, as attached figure 2 shown. in the attached figure 2 In , the horizontal axis represents the index of the sequence, each vertical line represents a sequence, two vertical lines with the same end of the line represent the complex conjugate relationship between the two sequences, and the two complex conjugate sequences circled by the dotted line are the targets sequence pair.

[0140] In Embodiment 2, the first wireless signal is generated by a first sequence, and the first sequence is a complex sequence in a target sequence pair, and the target sequence pair is a candidate sequence pair among X candidate sequence pairs, so Said X is a positive integer, and each of said X candidate sequence pairs includes two conjugated complex sequences.

[0141] In sub-embodiment 1 of embodiment 2, the first sequence is a Zadoff-Chu sequence.

[0142] In sub-embodiment 2 of embodiment 2, the first sequence is a Zad...

Embodiment 3

[0151] Embodiment 3 illustrates a schematic diagram of the relationship between the first time-frequency resource and the second time-frequency resource, as shown in the attached image 3 shown. in the attached image 3 , the horizontal axis represents time, the vertical axis represents frequency, the rectangle filled with slashes represents the first time-frequency resource, the rectangle without filling represents the second time-frequency resource, and the rectangle without filling in the dotted line represents the possible second time-frequency resource .

[0152] In Embodiment 3, the first time-frequency resource and the second time-frequency resource are orthogonal, and the relative position relationship between the second time-frequency resource and the first time-frequency resource in the time-frequency domain belongs to A first type of relationship, where the first type of relationship is one of the two types of relative positional relationships. For a given one of...

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Abstract

The invention discloses a wireless communication method and device. The method includes the following step: user equipment receives a first wireless signal on a first time-frequency resource, and thenreceives a first signaling, wherein the first wireless signal is generated by a first sequence, the first sequence is one sequence in a target sequence pair, the target sequence pair is one of X candidate sequence pairs, and each sequence pair of the X candidate sequence pairs includes two complex sequences that are conjugate to each other; the first wireless signal is used to determine at leastone of {the position of the first time-frequency resource in a time domain and the position of the first time-frequency resource in a frequency domain}; the first wireless signal is in a broadcast mode; or the first wireless signal is in a multicast mode; and the first signaling is used to determine a first feature ID, wherein the first feature ID is a feature ID corresponding to a sender of the first wireless signal. According to the method disclosed by the invention, indication information can be provided without increasing the complexity of synchronization signal detection.

Description

technical field [0001] The present invention relates to a method and device for synchronization signal transmission in a wireless communication system. Background technique [0002] The application scenarios of future wireless communication systems are becoming more and more diversified, and different application scenarios put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, the new air interface technology (NR, New Radio) for research. [0003] In a wireless communication system, a user equipment (UE, User Equipment) needs to detect a base station device and synchronize with the base station device in time and frequency before performing subsequent operations. This signal detection and time and frequency synchronization are accomplished through the synchronization signal. The synchronization signal is generally divided into a primary synchronization signal (PSS, Primary Sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04W56/00
CPCH04L27/2671H04L27/2672H04W56/00
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD