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Channel mapping and demodulation method and device

A channel and resource mapping technology, applied in the field of channel mapping and demodulation methods and devices, can solve problems such as control area interference between downlink cells

Active Publication Date: 2018-02-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a channel mapping and demodulation method and device to solve the problem of relatively serious interference in the control area between downlink cells in LTE in the prior art

Method used

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  • Channel mapping and demodulation method and device
  • Channel mapping and demodulation method and device

Examples

Experimental program
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Embodiment 1

[0054] According to an embodiment of the present invention, a resource mapping method for ePDCCH is provided, image 3 It is a flow chart of the ePDCCH resource mapping method of the embodiment of the present invention, such as image 3 As shown, the ePDCCH resource mapping method according to the embodiment of the present invention includes the following processing:

[0055] Step 301, dividing the total ePDCCH resource set of the base station into several ePDCCH resource subspaces, and determining the ePDCCH area type corresponding to each ePDCCH resource subspace in each cell, wherein the same ePDCCH area type in different cells corresponds to different ePDCCH resource subspaces;

[0056] In step 301, the total set of ePDCCH resources of the base station is divided into several ePDCCH resource subspaces, and the ePDCCH region type corresponding to each ePDCCH resource subspace in each cell is determined, specifically including the following processing:

[0057] 1. After the...

Embodiment 2

[0084] According to an embodiment of the present invention, a resource demodulation method of ePDCCH is provided, Image 6 It is a flow chart of the ePDCCH resource demodulation method in the embodiment of the present invention, such as Image 6 As shown, after executing the image 3 After the processing shown, the ePDCCH resource demodulation method according to the embodiment of the present invention includes the following processing:

[0085] Step 601, the UE obtains the network temporary code sent by the base station, and obtains the Cell-ID of the cell where it is currently located;

[0086] Step 602, obtain the ePDCCH resource mapping type of the cell currently located, and obtain the UE category to which it belongs according to the network temporary code and the correspondence table between the UE category and the network temporary code, where N is the number of types of ePDCCH area division of the cell ;

[0087] In step 602, obtaining the ePDCCH resource mapping ty...

example 1

[0092] Example 1, ePDCCH base station mapping and UE demodulation process, where Type-1, N=3, that is, 3 modes:

[0093] Step 1. The cells are numbered with different and continuous positive integers. The cell takes a modulo of 3 for its own Cell-ID, determines its own ePDCCH resource mapping type according to the result, and divides its own ePDCCH area into Near- by Users Area, Middle Users Area, and Cell-edge Users Area. The specific ePDCCH resource mapping locations are shown in Table 1 and Figure 4 shown. In this example, the Cell-ID of cell A is 25, and its corresponding ePDCCH resource mapping type is: 25mod3=1, corresponding to Figure 4 Type-1 in.

[0094] The base station first numbers the ePDCCH area of ​​the base station in units of PRBs, and obtains a total set of ePDCCH resources: RESOURCE_ePDCCH={PRB_1, PRB_2...PRB_99}. The RESOURCE_ePDCCH is equally divided into three subsets as follows: RESOURCE_1 = {PRB_1, ..., PRB_33}, RESOURCE_2 = {PRB_34, ..., PRB_66}, ...

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Abstract

The invention discloses a channel mapping and demodulation method and device. The method includes: dividing the total set of ePDCCH resources of the base station into several ePDCCH resource subspaces, and determining the ePDCCH area type corresponding to each ePDCCH resource subspace in each cell, wherein the same ePDCCH area type of different cells corresponds to different ePDCCH resource subspaces ; Determine the UE category of the user equipment UE; according to the correspondence between the UE category of the UE and the ePDCCH area type, map the ePDCCH of the UE to the corresponding ePDCCH area type in the ePDCCH resource subspace corresponding to the cell where the UE is located. With the help of the technical solution of the present invention, the problem of relatively serious interference in the control area between downlink cells existing in LTE in the prior art is solved, resource expenditure can be saved, and system efficiency can be improved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a channel mapping and demodulation method and device. Background technique [0002] Long Term Evolution (LTE for short) based on Universal Mobile Telecommunication System (UMTS) technology is the largest project launched by the 3rd Generation Partnership Project (3GPP) in recent years. This technology can be regarded as "quasi-4G technology". Evolved LTE (LTE-Advanced, referred to as LTE-A) is the follow-up evolution of LTE. 3GPP completed the LTE-A technical requirements report in 2008, and proposed the minimum requirements for LTE-A: the peak downlink rate is 1Gbps, and the peak uplink rate is 1Gbps. The rate is 500Mbps, and the peak spectrum utilization rate of uplink and downlink reaches 15Mbps / Hz and 30Mbps / Hz respectively. A Physical Downlink Control Channel (PDCCH for short) carries downlink control information (Downlink Control Information, DCI for short), including ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
CPCH04L5/0053H04W72/51
Inventor 马志锋张禹强崔琪楣韩江薛飞
Owner ZTE CORP