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Blind detection method, device and system

A blind detection and unified technology, applied in transmission systems, digital transmission systems, baseband system components, etc., can solve the problems of many blind detection errors, increased number of UE blind detections, and high power consumption

Inactive Publication Date: 2010-06-09
HUAWEI TECH CO LTD
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  • Description
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Problems solved by technology

Therefore, in the LTE-A system, the UE needs to perform the blind detection process of the control channel on each carrier to obtain the control channel parameters or confirm that there is no control channel of the UE, which leads to a large increase in the number of times the UE performs blind detection. Increase
However, the increase in the number of blind detections performed by the UE will cause problems such as excessive power consumption and excessive blind detection errors.

Method used

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  • Blind detection method, device and system
  • Blind detection method, device and system

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] In the following embodiments, the wireless communication system takes the LTE-A system as an example, but it can be generally applied to other wireless communication systems, such as WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) system and LTE system . Moreover, in the following embodiments, the UE can be implemented in various ways, such as a mobile phone, a computer, a personal digital assistant (PDA, Personal Digital Assistant), etc.; a physical downlink control channel (Physical Downlink Control Channel, PDCCH) is only used to control An example of a channel may also be other control channels, and downlink control information (Downlink Control Information, DCI) is only an example of control signaling, and is also...

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Abstract

The invention discloses a blind detection method, a user device blindly detects a control channel on a branch carrier in a first branch carrier set in a time transmission unit that needs to carry out control channel blind detection, wherein the first branch carrier set comprises a branch carrier selected from each type of branch carrier; and when the first branch carrier set includes at least one branch carrier which detects the control channel of the user device, the user device acquires control channel parameters of the control channel of the branch carrier which corresponds to the branch carrier that detects the control channel according to the control channel parameters and the control channel parameter mapping relation and carries out the blind detection on the control channel on the corresponding branch carrier according to the acquired control channel parameters. The invention simultaneously discloses blind detection device and system. The invention can realize the reduction of the blind detection frequency by narrowing the possible range of the blind detection.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a blind detection method, device and system. Background technique [0002] In the "Long Term Evolution" (LTE, Long Term Evolution) system, various bandwidths variable from 1.44M (6 resource blocks) to 20M (100 resource blocks) are supported. The control channel in the LTE system occupies certain resources in both the time domain and the frequency domain. In each subframe (time transmission unit), all time-frequency resources allocated to the control channel are divided into multiple control channel elements (CCE, ControlChannel Element). [0003] The control channel can have 4 aggregation levels, occupying 1, 2, 4 and 8 CCEs respectively. The amount of time-frequency resources occupied by the control channels of the four aggregation levels is quite different, and the adjacent control channels of the latter aggregation level occupy twice the time-frequency resourc...

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Application Information

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IPC IPC(8): H04L25/02H04L1/00
Inventor 刘德平曲秉玉
Owner HUAWEI TECH CO LTD
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