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Signal forwarding method and device of transparent relay station

A technology of a forwarding device and a forwarding method, applied in the directions of radio relay systems, radio transmission systems, electrical components, etc., can solve the problem that the demodulation and reception of forwarding signals cannot be guaranteed, the transparent relay station does not have pilot frequency transmission, and the transparent relay signal reception Poor quality and other problems, to avoid excessive resource overhead, avoid mutual interference, and ensure accuracy

Active Publication Date: 2009-01-14
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0013] However, in the pilot transmission scheme of the current mobile communication system, only the downlink pilot transmission scheme when transmitting signals between the base station and the terminal is disclosed, and the transparent relay station does not yet have the function of pilot transmission. Therefore, in the prior art , because the transparent relay station does not have a pilot frequency, the terminal cannot guarantee the correct demodulation and reception of the signal forwarded by the transparent relay station, the reception quality of the transparent relay signal by the terminal is poor, and the system capacity is low

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  • Signal forwarding method and device of transparent relay station
  • Signal forwarding method and device of transparent relay station
  • Signal forwarding method and device of transparent relay station

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[0054] In the present invention, there are two specific implementation modes for the transparent relay station to send the dedicated pilot symbol. In the above step 503, a judgment step can be further included: the transparent relay station judges whether the signal from the base station is within each transmission time interval (TTI) There is a common pilot symbol; if yes, execute the first embodiment, otherwise execute the second embodiment. The following are respectively explained:

[0055] The first implementation mode: a mode of coexistence of common pilot symbols and dedicated pilot symbols.

[0056] In the first implementation manner, the transparent relay station occupies corresponding basic time-frequency domain resource units in the time-frequency domain resource blocks occupied by the transparent relay station to send the dedicated pilot symbols. At this time, the base station still sends the common pilot symbol in each resource block, and needs to send the common ...

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Abstract

The invention discloses a signal relay method of transparent relay station comprising steps of receiving signal from base station, demodulating signal, recoding and modulating signal using set format of present transparent relay station, transmitting coded and modulated signal by accessing link, transmitting dedicated pilot symbol using dedicated time frequency domain resource block occupied by relay signal. The invention also discloses signal relay device of a transparent relay station comprising receiving and demodulating module, for receiving and demodulating signal of base station; coding and modulating module, for coding and modulating signal the receiving and demodulating module output; transmitting module, for relaying code modulated signal to terminal by link and simultaneously transmitting dedicated pilot symbol utilizing dedicated time frequency domain resource block occupied by relay signal. In the invention, signal relayed by transparent relay can be correctly demodulated and received.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a signal forwarding method of a transparent relay station in a mobile communication system and a corresponding signal forwarding device. Background technique [0002] In the forthcoming fourth-generation (4G) broadband wireless mobile communication system, relay and pilot technology, as an important application technology, has received extensive attention and has become a research hotspot in the field of mobile communication. [0003] Through the relay technology, the coverage of the cellular system can be expanded, or the system capacity can be increased. For the convenience of distinction, the relay method for extending the coverage is usually called a non-transparent relay method, and the relay method for improving the cell capacity is called a transparent relay method. [0004] figure 1 It is a schematic diagram of the system structure of the non-transparent relay ...

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Application Information

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IPC IPC(8): H04B7/14H04L27/26
CPCH04B7/155
Inventor 孙韶辉张光辉谢永斌王映民
Owner DATANG MOBILE COMM EQUIP CO LTD
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