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Method and device for determining search space of E-PDCCH (Enhanced Physical Downlink Control Channel) of UE (User Equipment)

A technology for searching space and determining units, applied in the field of communication

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

This has adverse effects, e.g. for localized E-PDCCH, basically allocating candidates on the same PRB pair

Method used

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  • Method and device for determining search space of E-PDCCH (Enhanced Physical Downlink Control Channel) of UE (User Equipment)
  • Method and device for determining search space of E-PDCCH (Enhanced Physical Downlink Control Channel) of UE (User Equipment)
  • Method and device for determining search space of E-PDCCH (Enhanced Physical Downlink Control Channel) of UE (User Equipment)

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Embodiment Construction

[0022] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] figure 1 A wireless communication system is shown in which the present invention may be implemented.

[0024] Such as figure 1 As shown, the wireless communication system 100 includes a first base station 110 corresponding to a first cell, a second base station 120 corresponding to a second cell, and user equipment UEs 130 and 140 .

[0025] The first base station 110 provides a first coverage area 110-a and the second base station 120 provides a second coverage area 120-a.

[0026] Here, it is assumed that the user equipment 130 is within the first coverage area 110-a. Accordingly, the user equipment 130 communicates with the first base station 110 via the wireless link 150 . The user equipment 140 is within the second coverage area 120-a. Accordingly, the user equipment 140 communicates with the second base station 120 via the wireless link 160...

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Abstract

The invention discloses a method and a device for determining the search space of E-PDCCH (Enhanced Physical Downlink Control Channel) of UE (User Equipment). The method comprises the following steps of: firstly determining the distance among candidates of the search spaces of each aggregation level, and then determining the position of corresponding candidate of the search space of each aggregation level in the allocated ECCE (Enhanced Control Channel Element) at least according to the determined distance. According to the method, the candidates of the search space of each aggregation level can be uniformly positioned on the allocated ECCE.

Description

technical field [0001] The present invention relates to the field of communication. More specifically, the present invention relates to a method and an apparatus for determining a search space of an enhanced physical downlink control channel (E-PDCCH) of a user equipment UE. Background technique [0002] Designing the enhanced physical downlink control channel E-PDCCH is considered to be an effective method to expand the scheduling capability of the LTE-A system. [0003] E-PDCCH is implemented on one or more PRB pairs of a subframe. Each PRB is a resource, which includes time-domain resources occupied by half a time slot in a subframe in time, that is, 7 OFDM symbols, and frequency-domain resources occupied by 12 subcarriers in frequency, in each subcarrier In the case of 15kHZ, it occupies 180kHZ. And a PRB pair includes PRBs in two slots in one subframe. [0004] E-PDCCH is organized with resource unit ECCE (Enhanced Control Channel Element) as granularity. An ECCE m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04L5/0053H04L5/0091H04W72/23
Inventor 蒋琦刘铮马修·贝克黄晟峰
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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