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ePDCCH (enhanced Physical Downlink Control Channel) sending and receiving methods, base station, and user equipment

A technology of a sending method and a receiving method, applied in the field of communication, can solve problems such as no solution proposed, and achieve the effects of improving resource utilization and stable transmission performance

Active Publication Date: 2014-05-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] For the transmission and reception of ePDCCH, no effective solution has been proposed so far

Method used

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  • ePDCCH (enhanced Physical Downlink Control Channel) sending and receiving methods, base station, and user equipment
  • ePDCCH (enhanced Physical Downlink Control Channel) sending and receiving methods, base station, and user equipment
  • ePDCCH (enhanced Physical Downlink Control Channel) sending and receiving methods, base station, and user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0069] The difference from Embodiment 1 is that the (eREG) index is determined according to the following formula:

[0070] PRBIndex = mod(eREGIndex, N);

[0071] eREGIndexInPRB=mod(floor(eCCEIndex / N)+mod(eCCEIndex, N)*M+eREGIndex*M, k);

[0072] In addition, mod means to find the remainder, and floor means to round down, the same below.

[0073] Among them, eCCEIndex is the D-eCCE index, eREGIndex is the eREG index corresponding to D-eCCE, N is the number of resource blocks corresponding to one ePDCCH resource set, M is the number of eCCEs corresponding to one resource block, and K is one resource block The number of eREGs included in .

[0074] It should be noted that, the method in this embodiment also makes the mapping relationship between eCCE index and eREG index as follows: the ePDCCH resource set includes k D-eCCE groups divided according to the order of D-eCCE index, in the same D-eCCE group, Each D-eCCE is mapped to the same eREG index group, each eREG index group...

Embodiment 3

[0099] The difference between Embodiment 3 and Embodiment 1 is that the eCCE is a discretely mapped eCCE (D-eCCE). When the number of resource blocks corresponding to one ePDCCH resource set is 8, the corresponding number of eCCEs in one resource block is 4. When 1 eCCE corresponds to 4 eREGs, the mapping relationship between eCCE index and eREG index is as follows: 1 resource set includes 16 D-eCCE groups, and the D-eCCE groups are in the order of D-eCCE index, each Two D-eCCEs are obtained by dividing one group, wherein each group of D-eCCEs is mapped to 8 eREGs of 8 resource blocks.

[0100] The eREG corresponding to the D-eCCE group is one of the following:

[0101] {0, 2, 4, 6, 8, 10, 12, 14};

[0102] {1, 3, 5, 7, 9, 11, 13, 15};

[0103] {0, 4, 8, 12};

[0104] {1, 5, 9, 13};

[0105] {2, 6, 10, 14};

[0106] {3, 7, 11, 15};

[0107] Preferably, the above mapping relationship can be implemented using any one of the following three sets of formulas:

[0108] The f...

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Abstract

The invention relates to ePDCCH sending and receiving methods, a base station and user equipment. The sending method comprises that the base station determines an index of candidate eCCE (enhanced Control Channel Element), which send an ePDCCH, in an ePDCCH resource set; the base station determines an eREG (enhanced Resource Element Group) index mapping the index of candidate eCCE; and the base station sends the ePDCCH to a terminal according to determination results. Thus, an effective ePDCCH scheme is provided.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for sending and receiving an enhanced physical downlink control channel (ePDCCH), a 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 suitable for 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 with a length of 5ms. A half frame consists of 5 subframes with a length of 1 ms. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/18
CPCH04L5/0053H04L5/0023H04L5/0041H04W72/23
Inventor 戴博陈艺戬左志松
Owner ZTE CORP
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