Downlink coverage enhancement method and device, equipment and storage medium

A technology of coverage enhancement and direction angle, applied in the field of communication, can solve the problems of high reliability and low delay of 5G communication system, and achieve the effects of simplifying calculation, increasing coverage radius, and quickly and efficiently determining beams

Active Publication Date: 2019-08-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a downlink coverage enhancement method, device and equipment, and a computer-readable storage medium to solve the problems of low delay and high reliability of the 5G communication system

Method used

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  • Downlink coverage enhancement method and device, equipment and storage medium
  • Downlink coverage enhancement method and device, equipment and storage medium
  • Downlink coverage enhancement method and device, equipment and storage medium

Examples

Experimental program
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no. 1 example

[0036] Before setting forth this embodiment, the existing solutions and existing problems are described below:

[0037] The solution given by the 3GPP (3rd Generation Partnership Project, Third Generation Partnership Project) standard organization is to pass the wide beam of SS (Synchronization Signal, synchronization signal) / PBCH (Physical Broadcast Channel, physical broadcast channel) block (block) Reference attached figure 2 shown) repeated transmission (up to 8 times) or narrow beam (please refer to the attached image 3 shown) to enhance downlink coverage.

[0038] In the time domain, one SS / PBCH block is composed of four OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols, and the symbols in the SS / PBCH block are numbered from 0 to 3 in increasing order, where PSS (Primary Synchronization Signal (Primary Synchronization Signal), SSS (Secondary Synchronization Signal, Secondary Synchronization Signal), PBCH, and DM-RS (...

no. 2 example

[0082] Such as Figure 11 As shown, the second embodiment of the present invention provides a downlink coverage enhancement device, which includes a sending module 21, a steering vector estimation module 22, a determination module 23, and a beam control module 24;

[0083] The sending module 21 is configured to use multiple narrow beams to send the synchronization signal physical broadcast channel resource block SS / PBCH Block; wherein, the multiple narrow beams use different narrow beam weights.

[0084] In this embodiment, multiple SS / PBCH blocks can be sent within 10 ms according to 3GPP38.211. Assuming that PSS / PBCH blocks are sent, the 120° sector can be divided into N sectors. In order to achieve the effect of enhancing coverage, the The original wide beam is converted into a narrow beam for transmission, and the 120° sector can be divided into N parts on average, and N groups of different weights are used to record it as [BC 1 BC 2 …BC N ] 1xN to send. The coverage ...

no. 3 example

[0136] Such as Figure 16As shown, the third embodiment of the present invention provides a downlink coverage enhancement device, which includes: a memory 31, a processor 32, and a downlink coverage enhancement method stored in the memory 31 and operable on the processor 32. Program, when the downlink coverage enhancement program is executed by the processor 32, it is used to realize the steps of the downlink coverage enhancement method described below:

[0137] Using multiple narrow beams to send the synchronization signal physical broadcast channel resource block SS / PBCH Block; wherein, the multiple narrow beams use different narrow beam weights;

[0138] Estimating the steering vector based on the uplink channel of the terminal to obtain a unit steering vector;

[0139] determining the narrow beam position where the terminal is located according to the unit steering vector;

[0140] Control the downlink physical channel and data of the terminal according to the narrow bea...

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Abstract

The invention discloses a downlink coverage enhancement method and device, equipment and a computer readable storage medium. The downlink coverage enhancement method comprises the following steps of:sending SS/PBCH Block by adopting a plurality of narrow beams; performing steering vector estimation based on the uplink channel of the terminal to obtain a unit steering vector; determining the position of a narrow beam where the terminal is located; and controlling the downlink physical channel and the data of the terminal. According to the method, SS/PBCH Block is sent through a plurality of narrow beams and different narrow beam weights, and the position of the narrow beam where the terminal is located is calculated and determined; the coverage enhancement effect can be achieved on the premise that the signaling overhead is not increased; calculation of the position of the terminal is simplified, and wave beams can be determined more rapidly and efficiently. Not only is the 5G coverageradius improved, but also no burden is caused to the system delay.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a downlink coverage enhancement method, device and equipment, and a computer-readable storage medium. Background technique [0002] In the 5G (5th-Generation, fifth-generation mobile communication) communication system, it is clearly stated that 5G needs to achieve low latency and high reliability. Such as figure 1 As shown, since the loss of wireless electromagnetic waves propagating in the air increases with the increase of frequency, and the frequency of 5G is higher than that of 2G / 3G and LTE, the coverage radius will inevitably become smaller. [0003] For 5G communication systems, the reduction of the coverage radius will lead to a decrease in the spectral efficiency of the base station, and operators need more base stations to achieve the same coverage radius, which will greatly increase the equipment cost and maintenance cost of the operator, affecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W72/04
CPCH04W24/02H04W72/046
Inventor 王继彪刘燕武吴昊
Owner ZTE CORP
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