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Precoding in wireless communication network

A wireless communication system and precoding technology, applied in the field of precoding, can solve problems such as not being able to guarantee good performance of the air channel, achieve good reception quality, and improve system performance

Inactive Publication Date: 2016-10-12
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even within a cell, the air channel is different for different user equipments, and neither of the above two approaches can guarantee good performance in all air channel conditions

Method used

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  • Precoding in wireless communication network
  • Precoding in wireless communication network
  • Precoding in wireless communication network

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Embodiment Construction

[0023] Specific details, such as specific examples, are set forth below for purposes of illustration and not limitation. However, it will be appreciated by those skilled in the art that other embodiments may be employed that vary from these specific details. In some instances, detailed descriptions of well-known methods, nodes, interfaces, circuits and devices are omitted so as not to obscure the description with unnecessary detail. Those skilled in the art will appreciate that the described functions may be implemented in one or more nodes using hardware circuitry (e.g., analog and / or discrete logic gates, ASICs, PLAs, etc., interconnected to perform a dedicated function) and / or Or implemented using data and software programs in conjunction with one or more digital microprocessors or general purpose computers. Nodes that communicate using the air interface also have appropriate radio communication circuitry. Furthermore, additionally, the technology can be considered fully ...

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Abstract

A method for performing precoding in a wireless communication system is disclosed. The method includes obtaining a parameter indicative of reception quality on a downlink channel from a base station to a user equipment (UE) served by the base station; comparing the parameter with a predetermined reception quality threshold; and based on the comparison result, selecting a precoding mechanism for use in communicating with the UE.

Description

technical field [0001] The present disclosure relates to wireless communications, and in particular to precoding in wireless communications networks. Background technique [0002] It is known that the use of multiple antennas at the transmitter and / or receiver in a wireless communication system can significantly improve the performance of the wireless system. Such antenna configurations have the potential to improve data rates, improve link reliability, and / or increase coverage. [0003] Precoding is a multi-antenna technique used to improve the performance of multi-antenna systems by transforming the information carrying the transmission vector so that it better suits the channel conditions. Precoding is often used in the transmitter to mitigate distortion introduced by the channel response. There are two common ways to achieve precoding, namely codebook based precoding or non-codebook based precoding. [0004] In codebook-based precoding, the transmitter and receiver ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/49
CPCH04L25/03898H04L25/03942H04B7/0417H04B7/0686H04B7/0623H04B7/0456H04B7/0632
Inventor 朱怀松汪剑锋王亥胡旸
Owner TELEFON AB LM ERICSSON (PUBL)
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