Method and device for determining distribution of EPDCCH (Enhanced Physical Downlink Control Channel) candidates

A distributed and quantitative technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems affecting blind detection performance, etc.

Inactive Publication Date: 2014-05-21
ALCATEL LUCENT SHANGHAI BELL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Correspondingly, the distribution of EPDCCH candidates in each EPDCCH set and each aggregation level, that is, the number of EPDCCH candidates of each aggregation level in each EPDCCH set, will affect the performance of blind detection

Method used

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  • Method and device for determining distribution of EPDCCH (Enhanced Physical Downlink Control Channel) candidates
  • Method and device for determining distribution of EPDCCH (Enhanced Physical Downlink Control Channel) candidates
  • Method and device for determining distribution of EPDCCH (Enhanced Physical Downlink Control Channel) candidates

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Embodiment Construction

[0054] According to a specific embodiment of the present invention, a method for determining the distribution of EPDCCH candidates in one or more enhanced physical downlink control channel EPDCCH sets is provided.

[0055] According to another specific embodiment of the present invention, an apparatus for determining the distribution of EPDCCH candidates in one or more enhanced physical downlink control channel EPDCCH sets is provided, which includes an acquiring unit and a determining unit.

[0056] figure 2 A flowchart of a method according to a specific embodiment of the present invention is shown.

[0057] refer to figure 2 , in step S201, the obtaining unit obtains EPDCCH configuration and subframe structure, and the EPDCCH configuration includes KD, KL, ND i , NL j , i=1...KD, j=1...KL, where KD is the number of distributed EPDCCH sets in the one or more EPDCCHs, and KL is the centralized EPDCCH set in the one or more EPDCCHs number of ND i is the number of physic...

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Abstract

The invention relates to a method and a device for determining the distribution of EPDCCH (Enhanced Physical Downlink Control Channel) candidates in one or more EPDCCH sets. The method comprises the steps of: A, obtaining EPDCCH configuration and a subframe structure, wherein the EPDCCH configuration comprises KD, KL, NDi, NLj, i is equal to 1...KD, j is equal to 1... KL, KD and KL respectively are the quantities of distributed EPDCCH sets and localised EPDCCH sets, NDi and NLj respectively are the quantity of PRB (Physical Resource Block) pairs included in the i-th distributed EPDCCH set and the j-th localised EPDCCH set; B, according to the EPDCCH configuration, the subframe structure and correspondence between each of the EPDCCH configuration and the subframe structure and the distribution of the EPDCCH candidates, determining the distribution of EPDCCH candidate and q is equal to 1...Q, wherein Q is the quantity of available aggregation levels corresponding to the subframe structure, and the quantity of EPDCCH candidates with the aggregation level of ALq in the i-th distributed EPDCCH set and the j-th localised EPDCCH set, ALq is the q-th aggregation level in the available aggregation levels, and the sum is the nonnegative positive integer power of 0 or 2.

Description

technical field [0001] The present invention relates to a physical downlink control channel (Physical Downlink Control Channel, PDCCH) in a wireless communication network, in particular to a method and device for determining the distribution of enhanced physical downlink control channel (Enhanced PDCCH, EPDCCH) candidates. Background technique [0002] In 3GPP-LTE (the 3 rd In Generation Partnership Project Long Term Evolution) Release 11, EPDCCH is introduced. Compared with traditional PDCCH, EPDCCH aims to obtain greater scheduling capability and higher spectrum efficiency. Similar to the traditional PDCCH, the basic resource element of the EPDCCH is defined as an enhanced control channel element (Enhanced Control Channel Element, ECCE). Multiple ECCEs can be aggregated according to different aggregation levels (Aggregation Level, AL) to support link adaptation (Link Adaptation) transmission of downlink control information (Downlink Control Information, DCI). For the E...

Claims

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Application Information

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IPC IPC(8): H04W28/16
Inventor 刘铮蒋琦马修·贝克黄晟峰
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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