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Resource configuration method and relevant device special for demodulation reference signal (DMRS)

A technology for demodulation reference signal and resource allocation, applied in the field of resource allocation of dedicated demodulation reference signal, can solve problems such as increasing the complexity of protocol definition, and achieve the effect of improving DMRS interference, standardization and system implementation, and simplifying complexity

Active Publication Date: 2013-07-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] During the research and practice of the existing technology, the inventors found that in the existing DMRS resource configuration mode, the combined configuration items of CS and OCC sequence resources corresponding to different Rank value settings are independent of each other, to a certain extent Increased complexity of protocol definition

Method used

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  • Resource configuration method and relevant device special for demodulation reference signal (DMRS)
  • Resource configuration method and relevant device special for demodulation reference signal (DMRS)
  • Resource configuration method and relevant device special for demodulation reference signal (DMRS)

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Embodiment 1

[0040] From the perspective of access network equipment, an embodiment of the resource configuration method for dedicated demodulation reference signals in the present invention is described below, which may include: determining the number of transmission layers for UE to transmit uplink data; according to the determined number of transmission layers, in One of the multiple combination configuration items of the CS and OCC sequence resources that can be used to generate the DMRS sequences of each transmission layer that are preset for the maximum number of transmission layers supported by the system is selected. The combined configuration of CS and OCC sequence resources that needs to be used to generate the DMRS sequence of each transmission layer for the UE to transmit uplink data above; wherein, the various preset combination configuration items satisfy the first optimal allocation condition, and the first optimal allocation condition includes : Each combined configuration i...

Embodiment 2

[0062] The following describes another embodiment of the resource allocation method for dedicated demodulation reference signals in the present invention from the perspective of user equipment, which may include:

[0063] Receive the control signaling containing the configuration indication information issued by the access network device, the configuration indication information is used to instruct the access network device to use the preset number of transmission layers supported by the system according to the determined number of transmission layers for the UE to transmit uplink data The maximum number of transmission layers is set to generate the DMRS sequence of each transmission layer. It is selected from one of the various combination configuration items of CS and OCC sequence resources that can be used to generate the DMRS sequence of each transmission layer. Generate the above-mentioned UE transmission uplink data The combined configuration of CS and OCC sequence resour...

Embodiment 3

[0069] In order to better understand the technical solutions of the embodiments of the present invention, the following introduces the maximum number of transmission layers supported by the system, and the preset combination configuration items of CS and OCC resources that can be used to generate DMRS sequences of each transmission layer . In addition, the combination configuration of CS and OCC sequence resources to be used by the DMRS sequences of each transmission layer of the UE is a configuration subset of a preset combination configuration item.

[0070] For example, the maximum number of transport layers currently supported by the system is 4, that is, the maximum rank value is 4, the value range of CS resources is 0 to 11, and the available OCC sequences are {1, 1}, {1, -1 }. For the maximum number of transmission layers supported by the system preset in the access network device and the UE, the combined configuration items of the CS and OCC sequence resources that are...

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Abstract

The embodiment of the invention discloses a resource configuration method and a relevant device special for a demodulation reference signal (DMRS). According to one embodiment, the method can comprise the following steps of: determining the number of transmission layers on which user equipment (UE) transmits uplink data; according to the determined number of the transmission layers, selecting a combined configuration item of cyclic shift (CS) and orthogonal cover code (OCC) sequence resources required to be adopted by DMRS sequences for generating the transmission layers on which the UE transmits the uplink data from a plurality of preset combined configuration items, which are set aiming at the maximum transmission layer number supported by a system, of the CS and OCC sequence resources which can be adopted by the DMRS sequences for generating the transmission layers on which the UE transmits the uplink data; and generating and issuing a control signal involving configuration instruction information. By the technical scheme, the complexity of describing DMRS resource configuration in a protocol can be reduced, and DMRS interference among code words can be avoided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a resource configuration method and a related device for a dedicated demodulation reference signal. Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) system of the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project), uplink data transmission usually uses a dedicated demodulation reference signal (DMRS, Demodulation Reference Signal) for channel estimation. [0003] The base station allocates a physical resource block (PRB, Physical Resource Block) for each user equipment (UE, User Equipment) that needs to transmit uplink data, and the minimum granularity of resource mapping is called a resource unit (RE, Resource Element), the resource bearing the DMRS is located in the PRB allocated by the base station for the UE to transmit uplink data. For example, the pilot structure of the uplink DMRS of LTE Rel-8 ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
Inventor 李洋周明宇夏媛
Owner HUAWEI TECH CO LTD
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