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Reference signal transmission method and device

A technology of a reference signal and a transmission method, applied in the field of reference signal transmission, can solve the problem of large blind detection overhead, and achieve the effects of reducing the number of blind detections and improving system performance.

Active Publication Date: 2018-07-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the maximum possible allocated bandwidth is 110 resource blocks (resource block, RB), and there are 35 different bandwidth allocation methods, it takes many times of blind detection to determine the interference reference signal, and the blind detection costs a lot

Method used

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  • Reference signal transmission method and device
  • Reference signal transmission method and device

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Embodiment Construction

[0041] The sending device and the receiving device in each embodiment of the present application may be any device on the sending end and the device on the receiving end that perform data transmission in a wireless manner. The sending device and the receiving device may be any device with wireless transceiver function, including but not limited to: base station NodeB, evolved base station eNodeB, base station in the fifth generation (the fifth generation, 5G) communication system, and base station in future communication system. A base station or network device, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and user equipment (user equipment, UE). The UE may also be referred to as a terminal, a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), or the like. The UE may communicate with one or more core networks via a radio access network (RAN), or may access the distributed network in an ad hoc or authorization-free...

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Abstract

The invention provides a reference signal transmission method and device. The method comprises the following steps: a sending device transforms a reference signal in a frequency domain into a time domain to generate a reference signal in the time domain, wherein the reference signal in the frequency domain comprises a reference signal sequence mapped on a frequency domain resource group, the reference signal sequence is related to the lengths of a Zadoff-Chu sequence and the reference signal sequence, and the length value of the Zadoff-Chu sequence is greater than the number of minimum time-frequency resource units contained in a maximum assignable frequency domain resource; and the sending device sends the reference signal in the time domain. By adoption of the reference signal transmission method provided by the invention, the PAPR / RCM of the reference signal can meet the performance requirements, meanwhile, the number of blind detections of the reference signal can be reduced, and the system performance can be improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communications, and in particular, to a method and device for transmitting a reference signal in a wireless communication system. Background technique [0002] In a wireless communication system, a reference signal (Reference Signal, RS), also called a pilot signal, is a predefined signal sent by a sending device to a receiving device on predefined resources. The receiving device can obtain channel-related information according to the received reference signal, and complete channel estimation or channel measurement. The channel measurement results can be used for resource scheduling and link adaptation, and the channel estimation results can be used by the receiving device to demodulate data. In general, in order to obtain channel-related information accurately, different reference signals need to be orthogonal. Usually, multiple reference signals that are orthogonal to each other can be pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L25/02
CPCH04L5/0048H04L25/0202H04L25/0238H04L27/2614H04L5/0007H04L27/26025H04J13/0062H04J13/10H04L1/0038H04L5/0051H04W72/0453
Inventor 胡远洲丁梦颖董朋朋王宗杰
Owner HUAWEI TECH CO LTD
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