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Method and equipment for PDCCH (Physical Downlink Control Channel) blind detection

A technology of physical downlink control and control channel unit, which is applied in the field of blind detection of physical downlink control channel PDCCH, which can solve the problems of occupying PDCCH, affecting the reliability of PDCCH, and failing to meet the above requirements, and achieve the effect of reducing the probability of PDCCH blocking

Active Publication Date: 2014-12-17
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0022] In the format scheme indicating the current DCI, the decoding of FI and DCI is a two-step decoding process. At the same time, FI needs to occupy PDCCH resources, which will affect the reliability of PDCCH to a certain extent; DCI padding (filling) In the way, additional signaling overhead is required for DCI padding
In addition, in the scenario where LTE terminals can support carrier aggregation within 20MHz through software upgrades, a continuous 20MHz carrier can be divided into two continuously aggregated 10MHz component carriers. Considering the hardware capabilities of LTE terminals, in this scenario The number of blind detections of the terminal should be roughly similar to the number of blind detections of a PDCCH of a 20MHz carrier (about 44 blind detections), but none of the technical solutions proposed in the prior art can meet the above requirements of this scenario

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  • Method and equipment for PDCCH (Physical Downlink Control Channel) blind detection
  • Method and equipment for PDCCH (Physical Downlink Control Channel) blind detection
  • Method and equipment for PDCCH (Physical Downlink Control Channel) blind detection

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Embodiment Construction

[0054] In the technical solution provided by the embodiments of the present invention, the number of candidate PDCCHs to be monitored on each PDCCH CC is configured for the UE according to the blind detection capability information of the UE, so that the UE performs PDCCH blind detection according to the number of candidate PDCCHs.

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0056] Such as Figure 7 As shown, it is a flowchart of a method for PDCCH blind detection in Embodiment 1 of the presen...

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Abstract

The embodiment of the invention discloses a method and equipment for PDCCH(Physical Downlink Control Channel) blind detection. The method comprises the following steps: a UE(User Equipment) acquires candidate PDDCH configuration information of the user equipment from base station equipment; the user equipment performs the PDCCH blind detection according to the candidate PDCCH configure information. The invention embodiment can reduce the complexity of the PDCCH blind detection.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and equipment for blind detection of a physical downlink control channel PDCCH. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the terminal needs to perform blind detection on the PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) in the public PDCCH search space and the UE-specific PDCCH search space at the same time, wherein a UE-specific The PDCCH search space is associated with a CCE aggregation level, and refers to the number of PDCCHs that need to be blindly detected under a CCE aggregation level. The CCE (Control Channel Element, control channel element) aggregation level of the PDCCH may be 1, 2, 4 and 8. Specifically, in the public PDCCH search space, the CCE aggregation levels can only be 4 and 8, and correspondingly, the numbers of candidate PDCCHs in the public PDCCH search s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04L1/00
Inventor 赵锐沈祖康潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD
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