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Feedback period of channel quality indication information and transmission method of sub-frame offset

A technology for channel quality indication and information feedback, which is applied in the field of wireless communication and can solve the problems of different processing in different systems, large signaling overhead, etc.

Active Publication Date: 2012-05-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing CQI information feedback cycle (N P ) and the offset of the CQI subframe (N OFFSET ) coding method is improved to solve the problem that its signaling overhead is large and it cannot be processed differently for different systems

Method used

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  • Feedback period of channel quality indication information and transmission method of sub-frame offset
  • Feedback period of channel quality indication information and transmission method of sub-frame offset
  • Feedback period of channel quality indication information and transmission method of sub-frame offset

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0073] For the TDD system, according to the value ranges of the CQI information feedback period and the CQI subframe offset, all combinations of the CQI information feedback period and the CQI subframe offset are determined as shown in Table 2.

[0074] Table 2 All combinations of TDD system CQI information feedback period and CQI subframe offset

[0075] feedback cycle Offset Feedback Period - Offset Combination 2ms 0、1、2 {2，(0，1)}，{2，(0，2)}，{2，(1，2)}； 5ms 0、1、2 {5，0}，{5，1}，{5，2}；

10ms

0～5

{10，0}，{10，1}，{10，2}，{10，3}，{10，4}，

{10，5}；

20ms

0～11

{20，0}，{20，1}，{20，2}，{20，3}，{20，4}，{20，

5}，{20，6}，{20，7}，{20，8}，{20，9}，{20，10}，

{20，11}； 40ms

0～23

{40，0}，{40，1}，{40，2}，{40，3}，{40，4}，{40，

5}，{40，6}，{40，7}，{40，8}，{40，9}，{40，10}，

[0076]

{40，11}，{40，12}，{40，13}，{40，14}，{40，15}，

{40，16}，{40，17}，{40，18}，{40，19}，{40，20}，

{40，21}，{40，22}，{40，23}；

80ms...

no. 2 example

[0087] In this embodiment, for the TDD system, all combinations of the CQI information feedback period and the CQI subframe offset are determined according to the value ranges of the CQI information feedback period and the CQI subframe offset, as shown in Table 4.

[0088] Table 4 All combinations of TDD system CQI information feedback period and CQI subframe offset

[0089] feedback cycle Offset Feedback Period - Offset Combination 1ms 0 {1，0}； 2ms 0，2 {2，(0，2)}； 5ms 0、1、2 {5，0}，{5，1}，{5，2}；

10ms

0～5

{10，0}，{10，1}，{10，2}，{10，3}，{10，4}，

{10，5}；

20ms

0～11

{20，0}，{20，1}，{20，2}，{20，3}，{20，4}，{20，

5}，{20，6}，{20，7}，{20，8}，{20，9}，{20，10}，

{20，11}；

40ms

0～23

{40，0}，{40，1}，{40，2}，{40，3}，{40，4}，{40，

5}，{40，6}，{40，7}，{40，8}，{40，9}，{40，10}，

{40，11}，{40，12}，{40，13}，{40，14}，{40，15}，

{40，16}，{40，17}，{40，18}，{40，19}，{40，20}，

{40，21}，{40，22}，{40，23}；

80ms

...

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Abstract

A transmission method for a channel quality instruction information cycle and a subframe offset is disclosed, which is applied to an LTE system for a long term evaluation. The method of the invention comprises the steps: channel quality instruction information, namely, all combinations of a CQI information feedback cycle and a CQI subframe offset in a system is determined; the corresponding relationship between the combination of the COI information feedback cycle and the CQI subframe offset and the index value are stored in a base station and a terminal; after configuring the COI informationfeedback cycle and the CQI subframe offset for the terminal, the base station finds the index value corresponding to the COI information feedback cycle and the CQI subframe offset according to the stored corresponding relationship, and then the index value is sent to the terminal. The method of the invention can save the expenses for transmitting signaling.

Description

technical field [0001] The present invention relates to a transmission method of channel information feedback parameters in the field of wireless communication, in particular to a channel quality indicator (CQI, Channel Quality Indicator) information feedback period (also referred to as the feedback period in the text) and a CQI subframe offset (also referred to as the CQI subframe offset in the text) offset) transfer method. Background technique [0002] The channel quality indication information is a measurement standard of the communication quality of the wireless channel. CQI is an indicator (or indicators) that represents a measure of the communication quality of a given channel. Usually, a high value of CQI indicates that a channel has a high quality standard, and vice versa. The CQI of a channel can be calculated through some performance indicators, for example, through channel performance indicators such as signal-to-noise ratio, signal-to-interference-plus-noise r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04B17/00H04B17/309
Inventor 戴博梁春丽郁光辉郝鹏
Owner ZTE CORP
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