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Channel information feedback method and device

A channel information feedback and channel information technology, applied in the field of channel information feedback methods and devices, can solve the problems of low system throughput and inaccurate channel information, and achieve the effect of improving system throughput

Inactive Publication Date: 2012-09-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a channel information feedback method and device to at least solve the problem of relatively low system throughput due to inaccurate channel information fed back in the channel information feedback method in the above-mentioned related art

Method used

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  • Channel information feedback method and device
  • Channel information feedback method and device

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Experimental program
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Effect test

Embodiment approach

[0033] Method 1: Determine the channel information segment S corresponding to the nth frequency unit of N frequency units for channel information feedback according to the following formula: S=N*(m-1)+n, where m is the nth frequency unit The total number of channel information segments; the channel information on the nth frequency unit is fed back on the channel information segment S after the determination operation.

[0034] Preferably, the channel information segments included in the N frequency units are the same.

[0035] Method 2: Determine the channel information segment S corresponding to the channel information feedback of the first frequency unit as M1, where M1 is the number of channel information segments included in the first frequency unit; determine the Nth frequency unit according to the following formula The channel information segment S corresponding to the nth frequency unit for channel information feedback: M1+...+M n-1 +1≤S≤M1+…+M n-1 +M n , where M n ...

Embodiment 1

[0041] This embodiment provides a method for channel information feedback. This embodiment combines the above embodiments and preferred implementation modes therein. The method includes:

[0042] When transmitting in a wireless communication system, any bandwidth can be composed of N frequency components, and the channel information of the first frequency component, such as MCS, SNR and channel state information, is at (N*(m-1))+ 1 segment feedback; the channel information of the second frequency component unit is fed back to the (N*(m-1))+2 segment, ..., the channel information of the nth frequency component unit, Feedback of the (N*(m-1))+n segment, ..., feed back the channel information of the Nth frequency component unit to the (N*(m-1))+N segment , where m=1, 2, ..., M, M is the total number of channel information feedback segments for each frequency component unit.

[0043] Preferably, in this embodiment, the total number of channel information segments of the frequency...

Embodiment 2

[0046] This embodiment provides a method for channel information feedback. This embodiment combines the above embodiments and preferred implementation modes therein. The method includes:

[0047] When transmitting in a wireless communication system, any bandwidth can be composed of N frequency components, and the channel information of the first frequency component, such as MCS, SNR and channel state information, is placed in the first M 1 segment feedback, M1 is the number of feedback segments of the frequency component unit 1; the channel information of the second frequency component unit, at the M 1 +1 to Mth 1 +M 2 Segmented feedback, M2 is the number of feedback segments of the frequency component unit 2, ..., the channel information of the nth frequency component unit, at the (M 1 +M 2 +...+M n-1 +1)th to (M 1 +M 2 +...+M n-1 +M n ) segment feedback, M n is the number of feedback segments of the frequency component n; ..., the channel information of the Nth freq...

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Abstract

The invention discloses a channel information feedback method and a channel information feedback device. The method comprises the following steps: dividing the bandwidth of a wireless communication system into N frequency units; wherein the N frequency units comprise one or a plurality of channel information sections; back feeding the channel information of the N frequency units on the channel information sections according to a first scheduled rule; or back feeding the channel information of the N frequency units on the bandwidth according to a second scheduled rule. wherein the channel information comprises MSC(mobile switching center), SNR (signal noise ratio) or channel state information. According to the channel information feedback method and the channel information feedback device, the accuracy of the channel information feedback is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a channel information feedback method and device. Background technique [0002] Wireless Local Area Networks (WLAN for short) is the application of wireless communication technology to interconnect computer equipment to form a network system that can communicate with each other and realize resource sharing. The essential feature of WLAN is that it no longer uses communication cables to connect computers to the network, but connects them wirelessly, so that the construction of the network and the movement of terminals are more flexible. Institute for Electrical and Electronic Engineers (Institute for Electrical and Electronic Engineers, referred to as IEEE) 802.11 is one of the mainstream technologies of wireless local area network at present, and this protocol mainly stipulates physical layer (PHY) and media access control (MAC) layer specifications. With the development of mob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04W72/04
CPCH04L1/0028H04W72/00H04W28/04H04L1/0026
Inventor 姜静田开波吕开颖孙波
Owner ZTE CORP
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