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epdcch transmission method and device, base station, user equipment

The technology of a transmission method and a transmission device, which is applied in the field of communication, can solve the problems of low ePDCCH transmission efficiency and the like

Active Publication Date: 2019-04-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Aiming at the problem of relatively low ePDCCH transmission efficiency in the related art, the present invention provides an ePDCCH transmission method and device to at least solve this problem

Method used

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  • epdcch transmission method and device, base station, user equipment
  • epdcch transmission method and device, base station, user equipment
  • epdcch transmission method and device, base station, user equipment

Examples

Experimental program
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Embodiment 1

[0133] The invention discloses an ePDCCH transmission method. The method comprises: determining a candidate position of the ePDCCH according to the candidate starting position of the ePDCCH configured by signaling, and selecting a position from the candidate positions to transmit the ePDCCH.

[0134] Preferably, the ePDCCH candidate position selection method includes at least one of the following:

[0135] The ePDCCH candidate positions for continuous mapping first select L-eCCEs of different resource block pairs, and then select different L-eCCEs in repeated resource block pairs after all configured resource block pairs have been traversed; the candidate positions for discretely mapped ePDCCHs are determined by Consecutive D-eCCEs or D-eCCEs at equal intervals;

[0136] All the eCCEs included in the above-mentioned set are divided into T groups, and for a specific aggregation level, the eCCEs in the group are preferentially selected as ePDCCH candidate positions, and T is a p...

Embodiment 2

[0171] This preferred embodiment provides an ePDCCH transmission method. In this embodiment, a resource block pair set includes N resource block pairs, one resource block pair includes Y eREGs, and one resource block pair corresponds to X eCCEs.

[0172] In this preferred embodiment, for continuously mapped ePDCCHs, N*Y eREGs included in N resource block pairs are mapped to N*X L-eCCEs. This step can be achieved by the following methods:

[0173] Method 1: Divide Y eREGs included in a resource block pair into X L-eCCEs, wherein, for each eREG of each resource block pair, the eREGs are numbered independently, and the eREGs at intervals are mapped to one eCCE.

example 1

[0175] The L-eCCE index corresponding to eREG index #h is h mod X; assuming that Y is 16 and X is 4, then eREG#0, eREG#4, eREG#8, eREG#12 correspond to eCCE#0, eREG# 1. eREG#5, eREG#9, eREG#13 correspond to eCCE#1, eREG#2, eREG#6, eREG#10, eREG#14 correspond to eCCE#2, eREG#3, eREG#7, eREG# 11. eREG#15 corresponds to eCCE#3.

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PUM

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Abstract

Disclosed are an ePDCCH transmission method, device, base station, and user equipment. The method comprises: determining the candidate positions for an ePDCCH; selecting a position among the candidate positions, and transmitting the ePDCCH at the selected position. The present invention ensures the stability of ePDCCH transmission, and enhances the resource utilization rate as well as scheduling flexibility.

Description

technical field [0001] The present invention relates to the communication field, in particular to an enhanced physical downlink control channel (ePDCCH) transmission method and device, base station, and user equipment. Background technique [0002] There are two frame structures in the Long Term Evolution (LTE for short) system, and the frame structure type 1 is applicable to Frequency Division Duplex (FDD for short) and Frequency Division Half Duplex. Each wireless frame is 10ms long and consists of 20 time slots (slot), each time slot is 0.5ms, numbered from 0 to 19. Wherein, a subframe (subframe) is composed of two consecutive time slots, for example, subframe i is composed of two consecutive time slots 2i and 2i+1. [0003] The frame structure Type 2 is suitable for Time Division Duplex (TDD for short). A wireless frame is 10ms in length and consists of two half-frames of 5ms in length. A half frame consists of 5 subframes with a length of 1 ms. The special subframe ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L1/00
CPCH04W72/02H04W72/12
Inventor 戴博陈艺戬郭森宝石靖左志松
Owner ZTE CORP
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