Method for uploading channel quality indication report by terminal

A channel quality indication and channel quality technology, which is applied in the field of channel quality indication reporting by terminals, and can solve problems such as unsatisfactory methods

Active Publication Date: 2009-05-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for the terminal to report the channel quality ...

Method used

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  • Method for uploading channel quality indication report by terminal
  • Method for uploading channel quality indication report by terminal
  • Method for uploading channel quality indication report by terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Channel quality indication reporting method procedure.

[0049] After receiving the message that needs to feedback the link channel quality indicator, the UE first judges the periodicity of the report. The report may be periodic or aperiodic. Aperiodic reports are usually triggered by events and used for timely Learn link channel quality information. Then judge the CQI reporting method of LTE-A according to the message (physical layer signaling or high-level signaling). The basic unit of the report can be component carrier frequency level or subband level, and component carrier frequency level is reported based on component carrier frequency For basic unit reporting, the sub-band level method is to divide the used component carrier frequency into sub-bands in sequence according to the sequence number of the resource block, and use the sub-band as the basic unit of reporting for CQI feedback. The reporting method can be full-bandwidth reporting , or reported by the UE s...

Embodiment 2

[0052] A full-bandwidth channel quality reporting method.

[0053] This LTE-A CQI reporting method is a method for the UE to report the channel quality of the entire frequency spectrum according to the used component carrier frequency. Under this method, there are two types of report types: CQI average value of all component carriers and CQI value of each component carrier;

[0054] scene one

[0055] Report the average CQI of all component carriers used by the UE;

[0056] method one

[0057] The UE measures and collects the CQI value of each component carrier frequency of the used bandwidth, performs corresponding arithmetic mean or weighted average to obtain a CQI value of the whole spectrum, and then reports the result to the eNB in ​​a signaling manner.

[0058] Method Two

[0059] According to the channel conditions of the used bandwidth, the UE selects a similar value according to the table lookup method, and feeds back its index to the eNB in ​​the form of signalin...

Embodiment 3

[0072] The channel quality reporting method selected by the UE.

[0073] The CQI reporting method of LTE-A is a method in which the UE selects the component carrier frequency or subband with the best channel quality according to the channel quality situation corresponding to the component carrier frequency for reporting.

[0074] scene one

[0075] Select I component carrier frequencies with the best channel quality and report them;

[0076] method one

[0077] Report the CQI value of the full bandwidth of the component carrier frequency on the best component carrier frequency;

[0078] According to the channel quality in the component carrier frequency, obtain the CQI value of the full bandwidth of each component carrier frequency, compare the CQI value of the full bandwidth of each component carrier frequency, select the best CQI value and the serial number of the component carrier frequency, and send feedback to the eNB in ​​the form of signaling ;

[0079] The componen...

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Abstract

The present invention discloses a method for reporting channel quality indication report by terminal, wherein the method comprises the following procedures: selecting one or a plurality of modes from a full-bandwidth reporting mode, a terminal selection reporting mode and a high-level collocation reporting mode; selecting a reporting unit according to the selected reporting mode; transmitting the channel quality indication report by the terminal to a base station with the selected reporting mode and the selected reporting unit; wherein the full-bandwidth reporting mode is a mode that the terminal reports a whole channel quality condition of one period of continuous bandwidth. The terminal selection reporting mode is a mode that the terminal selects a component carrier frequency or sub-band with best channel quality for reporting according to the channel quality condition of component carrier frequency in the used component carrier frequency. The high-level collocation reporting mode is a mode that the terminal feeds back the channel quality condition of component carrier frequency or sub-band which is requested for being fed back by the base station collocation. The application of the method according to the invention settles the problem that the method of traditional CQI report in the condition of large bandwidth of LTE-A, etc can not be satisfied.

Description

technical field [0001] The invention relates to the field of mobile wireless communication, in particular to a method for a terminal to report a channel quality indication report. Background technique [0002] LTE-A (Further Advancements for E-UTRA) is an evolved version of LTE (Long Term Evolution) Release-8. Except meeting or exceeding 3GPP TR 25.913: "Requirements for EvolvedUTRA (E-UTRA, Evolved-Universal Terrestrial Radio Access, Evolved Universal Terrestrial Radio Access) and Evolved UTRAN (E-UTRAN, Evolved Universal Terrestrial Radio Access Network)" In addition to all relevant requirements, it must also meet or exceed the requirements of the IMT-Advanced (Advanced International Mobile Telecommunications) system proposed by ITU-R. Among them, the requirement of backward compatibility with LTE Release-8 means that: LTE Release-8 terminals can work in the LTE-Advanced network; LTE-Advanced terminals can work in the LTE Release-8 network. Six bandwidths are defined in ...

Claims

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Application Information

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IPC IPC(8): H04W24/10H04W72/08
CPCH04W24/10
Inventor 罗宇民戴博郁光辉李卫军
Owner ZTE CORP
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