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Method and device for transmitting and receiving information

A technology for sending method and type information, which is applied in the field of communication, can solve problems such as performance degradation, open-loop MIMO precoding with large granularity, etc., and achieve the effect of improving performance

Active Publication Date: 2021-01-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The present invention provides a method and device for sending and receiving information, so as to at least solve the performance degradation problem of open-loop MIMO in the related art due to excessively large precoding granularity

Method used

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  • Method and device for transmitting and receiving information
  • Method and device for transmitting and receiving information
  • Method and device for transmitting and receiving information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Embodiment 1: Division of REGs based on cyclic prefix information of subframes

[0109] In a system including at least one sending end and at least one receiving end, the number of antennas / ports / array elements configured at each sending end is Nt, and the number of antennas / ports / array elements configured at the receiving end is Nr, where Nt is greater than A positive integer of 1, and Nr is a positive integer greater than 0. The bandwidth used by the system is Nb PRB pairs (ie system bandwidth), each PRB pair is a set S of resource elements RE including Nc subcarriers and Ns OFDM / OFDMA symbols, and it includes M REs. For example, under the normal cyclic prefix, in the case of 15K carrier spacing, the PRB pair of LTE / LTE A includes Nc=12 subcarriers, an area of ​​Ns=14 OFDM symbols, including 168 REs, in the extended cyclic prefix subframe or Under the TDD special subframe, the number of OFDM symbols may be different, and the number of subcarriers under different carr...

Embodiment 2

[0125] Embodiment 2 Divide REGs based on subframe type information

[0126]In a system including at least one sending end and at least one receiving end, the number of antennas / ports / array elements configured at each sending end is Nt, and the number of antennas / ports / array elements configured at the receiving end is Nr, where Nt is greater than A positive integer of 1, and Nr is a positive integer greater than 0. The bandwidth used by the system is Nb PRB pairs, and each PRB pair is a set S of resource elements RE including Nc subcarriers and Ns OFDM / OFDMA symbols, which includes M REs. For example, under the normal cyclic prefix, in the case of 15K carrier spacing, the PRB pair of LTE / LTE A includes Nc=12 subcarriers, an area of ​​Ns=14 OFDM symbols, including 168 REs, in the extended cyclic prefix subframe or Under the TDD special subframe, the number of OFDM symbols may be different, and the number of subcarriers under different carrier spacings may be different, but this...

Embodiment 3

[0146] Embodiment 3: divide REG based on channel state information

[0147] In a system including at least one sending end and at least one receiving end, the number of antennas / ports / array elements configured at each sending end is Nt, and the number of antennas / ports / array elements configured at the receiving end is Nr, where Nt is greater than A positive integer of 1, and Nr is a positive integer greater than 0. The bandwidth used by the system is Nb PRB pairs, and each PRB pair is a set S of resource elements RE including Nc subcarriers and Ns OFDM / OFDMA symbols, which includes M REs. For example, under the normal cyclic prefix, in the case of 15K carrier spacing, the PRB pair of LTE / LTE A includes Nc=12 subcarriers, an area of ​​Ns=14 OFDM symbols, including 168 REs, in the extended cyclic prefix subframe or Under the TDD special subframe, the number of OFDM symbols may be different, and the number of subcarriers under different carrier spacings may be different, but thi...

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Abstract

The present invention provides a method and device for sending and receiving information, wherein the method for sending information includes: dividing M PRB pairs into K REGs; using independent precoding to transmit information on the K REGs respectively. Through the present invention, when the granularity of precoding in open-loop MIMO is at least one PRB pair in the related art, M PRB pairs are divided into K REGs, and independent precoding is used to transmit information on the K REGs , the precoding granularity is divided into smaller ones, which solves the problem of open-loop MIMO performance degradation caused by excessive precoding granularity in the related art, and then achieves the effect of improving the performance of the open-loop MIMO.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for sending and receiving information. Background technique [0002] In a wireless communication system, the transmitting end and the receiving end generally use multiple antennas to transmit and receive to obtain a higher rate. One principle of multiple-input-multiple-output (MIMO) technology is to use some characteristics of the channel to form multi-layer transmission that matches the characteristics of the channel, so as to effectively improve system performance without increasing bandwidth and It is a very promising technology that is widely used in current systems to obtain significant performance improvement on the basis of power. For example, in Long Term Evolution (referred to as LTE) and its enhanced version (ie, enhanced Long Term Evolution-Advanced (referred to as LTE A) system, there are multiple multi-antenna technology transmission modes, tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/04H04B7/0456H04B7/06
CPCH04B7/0456H04B7/0486H04B7/0639H04L5/001H04W72/20H04L5/00
Inventor 肖华华陈艺戬李儒岳鲁照华吴昊蔡剑兴王瑜新李永
Owner ZTE CORP