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
CN102064929AActive Publication Date: 2011-05-18DATANG MOBILE COMM EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
DATANG MOBILE COMM EQUIP CO LTD
Publication Date
2011-05-18

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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).
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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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