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Reference signal transmission method and equipment

A reference signal and transmission method technology, applied in the field of reference signal transmission, can solve the problems of reducing measurement accuracy and data transmission performance

Active Publication Date: 2018-07-13
HUAWEI TECH CO LTD
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Problems solved by technology

[0003] In the existing LTE system, for each fixed-length reference signal sequence, 30 or 60 signal sequences are defined considering the requirements of network deployment. Some of these signal sequences will cause cell edge users to be limited in transmission power. When , the accuracy of the receiving device's measurement of channel-related information is reduced, and the data transmission performance is reduced

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  • Reference signal transmission method and equipment
  • Reference signal transmission method and equipment
  • Reference signal transmission method and equipment

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Embodiment Construction

[0070] The sending device and the receiving device in each embodiment of the present application may be any kind of sending-end device and receiving-end device that perform data transmission in a wireless manner. The sending device and the receiving device can be any kind of 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, future communication system A base station or a network device, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and a user equipment (user equipment, UE). Wherein, the UE may also be called a terminal terminal, a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT) and so on. The UE can communicate with one or more core networks via the radio access network (RAN), or access the distributed network in an ad hoc or authorization-free manner, and t...

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Abstract

The invention provides a reference signal transmission method and equipment. The method comprises the steps that a sending device transforms reference signals of a frequency domain into a time domain,thereby generating the reference signals of the time domain, wherein the reference signals of the frequency domain comprise a reference signal sequence mapped on a frequency domain resource, the reference signal sequence is determined by a Zadoff-Chu sequence, and a length value of the Zadoff-Chu sequence is selected from at least two length values; and the sending device sends the reference signals of the time domain. According to the reference signal transmission method provided by the invention, the ZC (Zadoff-Chu) sequence is selected from at least two ZC sequences with different lengthsand is used for generating the reference signal sequence, so the generated reference signal sequence has the characteristic of low PRPR (peak-to-average power ratio) and low RCM (Raw Cubic Metric). According to the reference signals generated by the reference signal sequence, the data transmission performance can be improved.

Description

technical field [0001] The present application relates to the field of communication, and in particular to a method and device for transmitting reference signals 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 a predefined resource. The receiving device can obtain channel-related information according to the received reference signal, and complete channel estimation or channel measurement. The channel measurement result can be used for resource scheduling and link adaptation, and the channel estimation result can be used for the receiving device to demodulate the data. Generally, in order to accurately obtain channel related information, different reference signals need to be orthogonal. Usually, multiple reference signals that are orthogonal to each other can be provided by mea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0048H04L27/2613H04L5/00H04J13/0062H04J13/0074H04L5/0005
Inventor 胡远洲丁梦颖王宗杰
Owner HUAWEI TECH CO LTD
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