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Blind detection method and device for control channel

A control channel and blind detection technology, applied in wireless communication, electrical components, etc., can solve the problems of high detection times and long control channel blind detection time, and achieve the effect of improving blind detection efficiency and reducing blind detection times and time

Active Publication Date: 2015-03-11
CHINA MOBILE COMM GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The embodiment of the present invention provides a control channel blind detection method and its device, which are used to solve the existing problems of long control channel blind detection time and many detection times

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  • Blind detection method and device for control channel
  • Blind detection method and device for control channel

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Embodiment Construction

[0030] In view of the above-mentioned problems existing in the prior art, in order to reduce the complexity of blind detection of the control channel and reduce the time and times of blind detection, the embodiment of the present invention proposes to determine the order of the aggregation level according to the user's control channel quality conditions, and according to the order A technical solution for determining the search space for blind detection of control channels can improve the efficiency of blind detection of control channels, reduce the time or times of blind detection, save terminal power consumption, and reduce the complexity of blind detection.

[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 the present invention are clearly and completely described. Obviously, the embodiments described below are only a part of the ...

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Abstract

The invention discloses a blind detection method and device for a control channel. In the method, according to the detected channel quality of a control region, a user terminal determines an Aggregation level corresponding to the channel quality; according to the determined Aggregation level, the user terminal determines the blind detection sequence of the Aggregation level during the blind detection on the control channel; and the user terminal performs blind detection on the control channel according to the determined blind detection sequence of the Aggregation level. By utilizing the method and device disclosed by the invention, the efficiency of blind detection on the control channel can be improved, the frequency of blind detection is reduced, and the consumption of power of the user terminal can be reduced.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a control channel blind detection method 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 Hybrid ARQ Indicator Channel), RS (Reference Signal ) and some empty REs (Resource Element, res...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02
Inventor 姜大洁
Owner CHINA MOBILE COMM GRP CO LTD