Interference measurement signaling notification method, interference measurement method, feedback method and apparatuses thereof

A technology of interference measurement and interference channel, which is applied in the field of interference measurement, can solve the problem of not being able to accurately provide base stations with subframe interference information, and achieve the effect of improving data transmission efficiency

Inactive Publication Date: 2012-03-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] In view of this, the main purpose of the present invention is to provide a notification method and device for interference measurement signaling, an interference measurement method and

Method used

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  • Interference measurement signaling notification method, interference measurement method, feedback method and apparatuses thereof
  • Interference measurement signaling notification method, interference measurement method, feedback method and apparatuses thereof
  • Interference measurement signaling notification method, interference measurement method, feedback method and apparatuses thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0078] This embodiment describes how the base station uses signaling to notify the UE of information about M consecutive subframes included in the subframe set for interference measurement or the subframe set for channel quality measurement.

[0079] As shown in Table 2 below, 8 M values ​​can be identified by 8 status bits of 3 bits

[0080] 000 1 subframe 001 5 subframes 010 10 subframes 011 20 subframes 100 40 subframes 101 80 subframes 110 160 subframes 111 320 subframes

[0081] Table 2

[0082] Alternatively, as shown in Table 3, 4 status bits of 2 bits can be used to identify 4 M values:

[0083] 00 1 subframe 01 10 subframes 10 100 subframes 11 1000 subframes

[0084] table 3

[0085] In the present invention, the way of indicating M consecutive subframes included in the subframe set for interference measurement or the subframe set for channel quality ...

Embodiment 2

[0088] This embodiment describes two cases where the signaling carrying the information of the above M consecutive subframes is transmitted at the radio resource control (RRC, Radio Resource Control) layer or at the physical layer.

[0089] RRC signaling belongs to high-level signaling, and the base station can carry the 2-bit or 3-bit information described in Embodiment 1 and other bit information indicating the M value in the RRC layer signaling, and notify the UE. The RRC layer signaling will last for a long time after it takes effect, and before the RRC layer signaling is changed, the subframe set for interference measurement or the M consecutive subframes included in the channel quality measurement subframe set are determined according to the previously notified M information.

[0090] The base station may also notify the UE of the information of M through physical layer signaling. For example, the trigger signaling for triggering the aperiodic CSI feedback is carried in ...

Embodiment 3

[0094] This embodiment describes the UE interference measurement method.

[0095] The terminal obtains the information of M by receiving high layer or physical layer signaling, and further determines M consecutive subframes included in the subframe set for interference measurement or the subframe set for channel quality measurement.

[0096] The terminal can perform interference measurement according to the CRS (Common Reference resource), and subtract the estimated pilot signal from the received signal on the CRS to obtain the measured interference on the CRS. Taking M=10 as an example for illustration, assuming 10 subframes The interferences are I1, I2...I10, and the UE can assume that the interference of the current measurement subframe is the arithmetic mean interference:

[0097] I=(I1+I2+...+I10) / 10

[0098] It may also be a weighted average interference, such as I=(a1×I1+a2×I2 . . . +a10×I10) / (a1+a2, + . . . , +a10).

[0099] The terminal can perform interference meas...

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Abstract

The invention discloses an interference measurement signaling notification method which comprises the following steps: a network side notifies M subframes information contained in a subframe set of interference measurement or a channel quality measurement subframe set to a terminal. The invention discloses an interference measurement method which comprises the following steps: the terminal receives an notification of subframe set of interference measurement or channel quality measurement subframe set information sent by the network side, carries out interference measurement on each subframe in the subframe set of interference measurement or channel quality measurement subframe set, and calculates an average interference value; the terminal determines CQI (channels quality indication) information according to the average interference value, and sends the interference value back to a base station. The invention discloses a channel quality information feedback method which comprises the following steps: the terminal appoints a subframe to carry out interference measurement at the base station, determines CQI according to a measurement result, and sends the CQI back to the base station. The invention discloses apparatuses for realizing the above methods. In the invention, the base station can accurately determines a modulation coding mode of the terminal according to the interference measurement result, and data transmission efficiency is raised.

Description

technical field [0001] The present invention relates to interference measurement technology, in particular to a notification method and device for interference measurement signaling, an interference measurement method and device, and a feedback method and device for channel quality information. Background technique [0002] In the long-term evolution system (LTE, Long Term Evolution), the information (CSI, Channel State Information) reflecting the downlink physical channel state mainly includes the following three parameter information: channel quality indication (CQI, Channels Quality Indication), precoding matrix indication (PMI, Pre-coding Matrix Indicator) and rank indicator (RI, Rank Indicator). [0003] Among them, the CQI is an index to measure the quality of the downlink channel. In the 3GPP TS 36.213 protocol, the CQI index is represented by an integer value from 0 to 15, which represent different CQI levels. Different CQI levels correspond to their respective modu...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W68/00
CPCH04W24/10H04L5/0057H04W72/23H04L5/0092H04W24/08
Inventor 李儒岳陈艺戬郭森宝唐红
Owner ZTE CORP
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