Method, device and system for transmitting pilot of backhaul link

A technology of backhaul link and transmission method, which is applied in the field of transmission backhaul link pilot, which can solve the problems of low density and inability to guarantee demodulation performance, and achieve the effect of ensuring demodulation performance

Active Publication Date: 2011-05-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] When the base station uses four antenna ports for downlink transmission, the R-PDCCH area can only receive a column of CRS of ports 2 and 3, the density is small, and the demodulation performance cannot be guaranteed

Method used

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  • Method, device and system for transmitting pilot of backhaul link
  • Method, device and system for transmitting pilot of backhaul link
  • Method, device and system for transmitting pilot of backhaul link

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Embodiment Construction

[0077] The embodiment of the present invention aims at the transmission of the common pilot on the backhaul link, and designs the CRS transmission scheme on the antenna ports 2 and 3, and in the RN downlink control transmission area and / or the RN downlink data transmission area, the antenna ports 2 and 3 are added A list of common pilots.

[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0079] Such as Figure 8 As shown, it is a flowchart of a method for transmitting a backhaul link pilot in Embod...

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Abstract

The embodiment of the invention discloses a method, a device and a system for transmitting pilot of a backhaul link. The method comprises the following steps that: base station equipment configures the pilot density according to channel conditions in a downlink transmission area of a relay node; and the base station equipment transmits the pilot to the relay node through the downlink transmissionarea of the relay node according to the configured pilot density, wherein the base station equipment determines the downlink transmission area of the relay node, and configures different pilot densities according to different channel conditions; and the pilot is not limited to a communal reference signal (CRS) and also can be applied to a demodulation reference signal (DMRS). The pilot which is transmitted by the base station equipment to the relay node through the downlink transmission area of the relay node comprises the CRS and the DMRS, a relay node-physical downlink control channel (R-PDCCH) is divided into a frequency division multiplexing (FDM) mode and a time division multiplex (TDM) +FDM mode, and the relay node receives and detect the pilot and demodulates the pilot. The embodiment of the invention improves the demodulation performance of the R-PDCCH and / or a relay node-physical downlink shared channel (R-PDSCH).

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method, device and system for transmitting backhaul link pilot frequency. Background technique [0002] With the commercialization of 3G (the 3rd Generation, third-generation mobile communication) technology, the LTE (Long Term Evolution, Long Term Evolution System) standard is nearly completed, and the LTE-A (Long Term Evolution Advanced , Advanced Long-Term Evolution System) standardization work is also in full swing. [0003] LTE-A is a backward compatible technology and is fully compatible with LTE. Among them, the relay (Relay) technology is one of the new technologies introduced by LTE-A, which is used to improve system throughput and increase network coverage. In order to realize the relay technology, an RN (Relay Node, relay node) is correspondingly introduced into the mobile communication system. Such as figure 1 As shown, it is a schematic dia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L5/26H04B7/26
Inventor 刘美沈祖康张文健潘学明王立波
Owner DATANG MOBILE COMM EQUIP CO LTD
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