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Resource mapping method and device for relay link downlink control channel

A relay link and control channel technology, applied in the direction of multi-frequency code system, etc., can solve the problem that the downlink control channel of the relay link cannot use resource mapping and other problems

Active Publication Date: 2013-09-25
HUAWEI TECH CO LTD
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Problems solved by technology

In the relay link resources, only the common reference signal (CRS) in Release 8 (Rel 8) of the 3GPP LTE system occupies part of the resources. However, when the relay link uses the common reference signal of REL 8 When the pilot pattern is other than the pilot pattern, the downlink control channel of the relay link cannot use the existing mechanism for resource mapping

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  • Resource mapping method and device for relay link downlink control channel
  • Resource mapping method and device for relay link downlink control channel
  • Resource mapping method and device for relay link downlink control channel

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Embodiment Construction

[0020] In order to make the specific technical solution and the purpose of the invention clearer, further description will be made below in conjunction with specific implementation methods and accompanying drawings.

[0021] Such as figure 1 As shown, an embodiment of the present invention provides a resource mapping method for a relay link downlink control channel, including:

[0022] Step 101: Select an Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol and at least one OFDM symbol in a blank OFDM symbol in a physical resource block, which contains 14 OFDM symbols , the CRS pattern pilot is located on the 3rd, 6th, 9th and 12th subcarriers of the OFDM symbol to which the CRS pattern pilot is mapped; the selected OFDM symbol does not include the 1st and 2nd OFDM symbols in the physical resource block.

[0023] Step 102: Map the downlink control channel of the relay link in the selected OFDM symbol.

[0024] According to the ...

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Abstract

The invention relates to the technical field of wireless communication, and discloses a resource mapping method for a relay link downlink control channel, which comprises the following steps of: selecting at least one of orthogonal frequency division multiplexing (OFDM) symbols and blank OFDM symbols for mapping common reference signal (CRS) mode reference signals in a physical resource block, wherein the physical resource block comprises 14 OFDM symbols, each OFDM symbol comprises 12 sub-carriers, the CRS mode reference signals are positioned on the third, sixth, ninth and twelfth sub-carriers of the OFDM symbols for mapping the CRS mode reference signals, and the selected OFDM symbols do not comprise the first and second OFDM symbols in the physical resource blocks; and mapping the relay link downlink control channel in the selected OFDM symbols. The invention also discloses a communication device. By the scheme provided by the invention, conventional resource unit group allocation granularity and a conventional mapping mechanism can be used in the mapping of the relay link downlink control channel.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a resource mapping method and device for a downlink control channel of a relay link. Background technique [0002] With the rapid development of wireless communication services, future networks need to consider low-cost layout design to support wireless communication and provide better coverage or system throughput. The relay technology can expand the coverage of the cell or increase the capacity of the cell. The advantages of relatively flexible and low-cost deployment make the relay technology attract more and more attention. [0003] In the Long Term Evaluation-Advanced (LTE-A) standard of the third generation partnership project (The third Generation Partner Project, 3GPP), the relay technology has become an enhanced technology. In a relay system, a physical resource block usually includes three kinds of physical channel resources, namely, a physical d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 龚政委
Owner HUAWEI TECH CO LTD
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