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Method, system and device for configuring backhaul link resources of relay system

A backhaul link and resource allocation technology, which is applied in the field of resource allocation of the relay system backhaul link, can solve problems such as R-PDCCH resource mapping inconsistency, and achieve the effects of reducing complexity, improving performance, and improving accuracy

Active Publication Date: 2014-04-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to at least solve one of the above-mentioned technical problems, especially solve the problem of inconsistency in R-PDCCH resource mapping due to changes in the number of DMRS ports

Method used

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  • Method, system and device for configuring backhaul link resources of relay system
  • Method, system and device for configuring backhaul link resources of relay system
  • Method, system and device for configuring backhaul link resources of relay system

Examples

Experimental program
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Embodiment 1

[0050] like Figure 5 As shown, it is the allocation situation when there are 3 REs in one OFDM symbol in the case of FDM+TDM multiplexing according to the embodiment of the present invention. As shown in the figure, the allocation of 4 consecutive PRBs is shown.

Embodiment 2

[0052] like Image 6 As shown, it is the allocation situation when there are 6 REs in one OFDM symbol under the multiplexing condition of FDM+TDM according to the embodiment of the present invention. As shown in the figure, the allocation situation of 2 consecutive PRBs is shown.

Embodiment 3

[0054] like Figure 7 Shown is the allocation situation when there are 3 REs in one OFDM symbol in the case of FDM multiplexing in the embodiment of the present invention. As shown in the figure, the allocation of 4 consecutive PRBs is shown.

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Abstract

The invention provides a method for configuring backhaul link resources of a relay system. The method comprises the following steps: an evolved NodeB (eNB) configures N continuous physical resource blocks (PRBs) according to the number of demodulation pilot frequency (DMRS) ports, and performs control channel configuration by taking the N continuous PRBs as a basic resource unit; the eNB informs a relay node (RN) of the DMRS port number and the configuration number N, and sends an R-PDCCH (reverse packet data control channel) to the RN; and the RN detects the R-PDCCH according to the number of the DMRS ports and the configuration number N. The embodiment of the invention can ensure that the inner resource units of the R-PDCCH dynamically change along with the number of the DMRS ports and the current R8 resource mapping mode can be reused for performing REG (range extender with gain) mapping.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a resource configuration method, system and device for a backhaul link of a relay system. Background technique [0002] like figure 1 Shown is a schematic diagram of the network structure of the LTE-A system. In the figure, eNB (evolved base station) is connected to the core network through a wireless interface, RN (Relay Node, relay node) is connected to eNB through a wireless interface, UE (user terminal) is connected to RN or eNB through a wireless interface; RN to eNB The link from the RN is the backhaul link, and the link from the RN to the UE is the access link. [0003] Currently, there are two types of backhaul links, namely, the backhaul link (backhaul link) from RN to eNB and the access link from RN to UE. The area is defined as the control channel (R-PDCCH) sent by the eNB to the RN on the backhaul link, and the physical shared channel (R-PDSCH)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04W72/04
Inventor 王立波潘学明肖国军张文健
Owner DATANG MOBILE COMM EQUIP CO LTD
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