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PDCCH information transmission method and device thereof

A transmission method and technology of terminal equipment, applied in the field of communication, can solve the problems of reduction, unclear definition of PDCCH search space, affecting the blocking rate of PDCCH, etc., and achieve the effect of reducing blocking probability and improving reliability.

Active Publication Date: 2012-03-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0027] Embodiments of the present invention provide a method and device for transmitting PDCCH information, which solves the problem that the existing PDCCH search space is not clearly defined and affects the effect of reducing the PDCCH blocking rate

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  • PDCCH information transmission method and device thereof
  • PDCCH information transmission method and device thereof
  • PDCCH information transmission method and device thereof

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Embodiment Construction

[0051] As mentioned in the background, since the 3GPP discussion has determined that for different PDSCH / PUSCH CCs, there are different PDCCH search spaces on the PDCCH CC, but the existing PDCCH search space determination method does not take this situation into consideration. Therefore, the definition of the PDCCH search space is not clear, which affects the effect of reducing the PDCCH blocking rate of the PDCCH search space determined in this way.

[0052]In order to solve the above problems, the embodiment of the present invention provides a technical solution for determining the PDCCH search space through the offset value information. The main technical idea of ​​the technical solution is: preset the offset value information on the base station and the terminal equipment, The base station determines the PDCCH search space dedicated to the terminal device according to the offset value information, and sends PDCCH information to the terminal device through the PDCCH search ...

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PUM

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Abstract

An embodiment of the invention discloses a PDCCH (physical downlink control channel) information transmission method and a device thereof. Through applying a technical scheme of the embodiment, a base station determines exclusive PDCCH search space of a terminal device according to deviation value information, and sends PDCCH information to the terminal device. The terminal device also determines the exclusive PDCCH search space of a terminal device according to the deviation value information, and acquires corresponding PDCCH information through the PDCCH search space. Thus, a blocking probability in a PDCCH scheduling process is reduced, and reliability of PDCCH transmission is raised.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and equipment for transmitting PDCCH information. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the terminal needs to simultaneously perform blind detection on the PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) of the public search space and the UE (User Equipment, user equipment)-specific search space, and the PDCCH The CCE (Control Channel Elements, control channel element) aggregation level (Aggregation Level, AL) can be 1, 2, 4, 8. In the common search space, its CCE aggregation levels can only be 4 and 8, and the corresponding numbers of candidate PDCCHs in the common search space are 4 and 2 respectively. In the UE-specific search space, under each CCE aggregation level, the number of candidate PDCCHs that require blind detection is different, as shown in Table 1: [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16H04W72/12
Inventor 赵锐沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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