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Method, device and system for receiving channel state information

A channel state information, state information technology, applied in wireless communication, error prevention/detection using return channel, electrical components, etc., to reduce bit overhead

Active Publication Date: 2011-12-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering that the bit overhead of channel state information increases linearly with the number of component carriers, when the user equipment aggregates a large number of component carriers, feeding back the channel state information of multiple component carriers will cause a large bit overhead of channel state information

Method used

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  • Method, device and system for receiving channel state information
  • Method, device and system for receiving channel state information
  • Method, device and system for receiving channel state information

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] For a method for receiving channel state information provided by an embodiment of the present invention, see figure 1 , the method includes:

[0031] Step 101, assign channel state information feedback granularity to the user equipment, wherein the feedback granularity includes a frequency band segment (Bandwidth Part, BP), and the length of the BP is greater than the length of the sub-band (Sub-band, SB);

[0032] The BP and SB are divided according to the...

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Abstract

The embodiment of the invention discloses a channel state information receiving method, a channel state information receiving device and a channel state information receiving system. The method comprises the following steps of: allocating a channel state information feedback particle size to user equipment, wherein the feedback particle size comprises a band part (BP) with a length greater than that of a sub-band (SB); and receiving channel state information fed back by the user equipment, wherein the channel state information is obtained according to the feedback particle size. By the technology provided by the embodiment of the invention, the channel state information bit overhead of the component aggregation user equipment in a long term evolution (LTE) system on an LTE-advanced (LTE-A) system can be reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method, device and system for receiving channel state information. Background technique [0002] In the uplink direction of the wireless communication system, the user equipment needs to feed back channel quality indication (Channel Quality Indication, CQI) information to the base station. The base station can know the downlink channel quality status perceived by the user equipment through the CQI information fed back by the user equipment, so as to help the base station perform frequency selective scheduling. CQI information is necessary for link adaptation techniques. [0003] The 3GPP Evolved Universal Terrestrial Radio Access (E-UTRA) system is also called the Long Term Evolution (LTE) system, in which the downlink direction adopts OFDMA technology and multiple input multiple output (Multiple Input Multiple Output, MIMO) technology to increase the downlink p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L1/16
Inventor 陈小波
Owner HUAWEI TECH CO LTD
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