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Method for reporting channel quality of control area and method and device for configuring control channel

A technology for controlling channels and channel quality, which is applied in the field of methods and devices for reporting channel quality in control regions, can solve problems such as inability to guarantee PDCCH transmission reliability, and achieves the effect of taking into account system resource utilization and ensuring transmission performance

Active Publication Date: 2011-11-09
CHINA MOBILE COMM GRP CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, there are currently no relevant solutions and regulations on how to select the number of CCEs when the base station configures PDCCH for users. Therefore, the reliability of PDCCH transmission cannot be guaranteed.

Method used

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  • Method for reporting channel quality of control area and method and device for configuring control channel
  • Method for reporting channel quality of control area and method and device for configuring control channel

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Embodiment Construction

[0029] In view of the above-mentioned problems existing in the existing representation technology, in order to ensure the reliability of control channel transmission, the embodiment of the present invention proposes a technical solution for adaptively configuring the number of CCEs of the user's control channel according to the user's control channel quality conditions, thereby improving the control channel Transmission reliability.

[0030] In the embodiment of the present invention, on the one hand, the terminal has the ability to measure and report the channel quality of the control area; on the other hand, the base station can adaptively select the number of CCEs of the control channel for the terminal according to the channel quality of the control area reported by the terminal.

[0031] Taking the 3GPP LTE Release 8 system as an example below, combined with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of...

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Abstract

The invention discloses a method for reporting channel quality of a control area and a method and device for configuring a control channel, wherein the method for reporting the channel quality of the control area comprises the steps of: measuring the channel quality of the control area; and reporting the measured result of the channel quality to a network side, or reporting the number of control channel elements (CCE) used by a control channel, wherein the number is obtained through mapping according to the measured result. The method for configuring the control channel comprises the steps of: receiving the measured result information of the channel quality of the control area or the number information of the CCE, reported by a terminal; and according to the received measured result information of the channel quality of the control area or the number of the CCE, allocating CCEs with a required use number for the control channel of the terminal. According to the invention, the transmission reliability of the control channel can be improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for reporting channel quality in a control area and a device thereof, as well as a method for configuring a control channel and a device thereof. Background technique [0002] In the 3GPP LTE Release 8 system, the length of a downlink subframe (subframe) is 1ms (when the normal cyclic prefix is ​​used, it contains 14 OFDM symbols, where OFDM is the English abbreviation of Orthogonal Frequency Division Multiplexing, that is, Orthogonal Frequency Division Multiplexing technology), including the control region (PDCCH, namely the physical downlink control channel) and the data region (PDSCH, namely the physical downlink shared channel), its structure is as follows figure 1 shown. [0003] The first N (N can be 1, 2, 3 or 4) symbols of each subframe can be used as the control area, including PCFICH (Physical Control Format Indicator Channel), PDCCH, PHICH (Physical Hybr...

Claims

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Application Information

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IPC IPC(8): H04W24/10
Inventor 姜大洁
Owner CHINA MOBILE COMM GRP CO LTD
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