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Blind detection method and device of carrier aggregation

A carrier aggregation and blind detection technology, which is applied to receiver-specific devices, allocation between users/terminals, transmission modification based on link quality, etc., can solve the problem of excessive blind detection times, reduce blind detection times, Issues such as increased terminal power consumption

Active Publication Date: 2017-01-04
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

[0012] The purpose of the present invention is to provide a method and device for blind detection of aggregated carriers, which solves the problem of increased terminal power consumption caused by too many blind detection times, reduces the complexity of blind detection, thereby greatly reducing the number of blind detection times and reducing the power consumption of the terminal. power consumption

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  • Blind detection method and device of carrier aggregation
  • Blind detection method and device of carrier aggregation
  • Blind detection method and device of carrier aggregation

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Embodiment Construction

[0093] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0094] Aiming at the problems of high blind detection complexity in the prior art and increased terminal complexity and power consumption caused by too many blind detection times, the present invention provides a blind detection method and device for an aggregated carrier, by establishing different component carriers of the aggregated carrier The relationship between the CCE numbers of the carried PDCCHs. The user only needs to perform blind detection on some component carriers to determine the CCE numbers of the PDCCHs of other component carriers. This can greatly reduce the number of blind detections and reduce user power consumption. The purpose of complexity; or by setting the blind detection candidate resources of some component carriers by default, ...

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Abstract

The invention provides a blind detection method and device of carrier aggregation. The blind detection method applied to a base station side comprises that a first control channel element (CCE) number, in which a physical download control channel (PDCCH) in a present member carrier wave in carrier aggregation is positioned, is determined; according to the CCE number, the correspondence between a second CCE number, in which PDCCHs of other member carriers in carrier aggregation are positioned, and the first CCE number is determined, so that user equipment determines the second CCE number in which PDCCHs of other member carriers in carrier aggregation are positioned according to the correspondence and the first CCE number obtained by blind detection, and the user equipment detects carriers of the corresponding members according to the second CCE number. The blind detection method can be used to reduce the frequency of blind detection greatly, and reduces complexity and power consumption of terminals.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for blind detection of aggregated carriers. Background technique [0002] The function of the downlink control channel is to transmit physical layer control signaling to a certain user or some users. In order to improve the effectiveness of resource utilization and ensure the reliability of control information transmission, the control channel in the LTE system also adds a simple link automatic adaptive function. This function is realized by defining different aggregation levels. The traditional PDCCH (Physical Downlink Control Channel) supports 4 formats (formats), corresponding to 4 physical resource levels for transmission. As shown in Table 1, due to the carried DCI (Downlink control information) The number of bits is constant, so as the PDCCH format changes, the code rate for encoding DCI information will decrease, thereby reducing...

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Application Information

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IPC IPC(8): H04L1/00H04L5/00
CPCH04L1/0038H04L5/0037H04L5/0053H04L1/0091H04W72/23
Inventor 胡丽洁沈晓冬侯雪颖
Owner CHINA MOBILE COMM GRP CO LTD
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