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Method and device for transmitting sounding reference signal in unlicensed frequency band

A technology for sounding reference signals and unlicensed frequency bands, which is applied in the field of communications and can solve problems such as the inability to flexibly transmit SRS and the increase in the number of SRS resourcesets.

Active Publication Date: 2022-04-15
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the unlicensed frequency band already supports configuring the start position (startPosition) in resource mapping (resourceMapping) to any one of (0, 13), it is still not possible to flexibly transmit SRS of any symbol length
Even though multiple SRS resource sets (resource sets) are configured so that the SRS resources (resources) in each set (set) are of different lengths, an SRS of one length may correspond to multiple different starting positions, resulting in the need to configure SRS The number of resource sets has increased dramatically

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  • Method and device for transmitting sounding reference signal in unlicensed frequency band
  • Method and device for transmitting sounding reference signal in unlicensed frequency band
  • Method and device for transmitting sounding reference signal in unlicensed frequency band

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] The technical scheme of the present invention can be applied to various communication systems, such as: Global System of Mobile Communication (GlobalSystem of Mobile communication, GSM), Code Division Multiple Access (Code Division Multiple Access, CDMA) system, Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA), General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term E...

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Abstract

The invention discloses a method and device for transmitting sounding reference signals in an unlicensed frequency band. The method includes: sending a first start position of a sounding reference signal SRS, wherein the first start position of the SRS is carried in downlink control information DCI , the SRS sent by the user equipment is received, wherein the SRS is sent by the user equipment according to the first start position. According to the method and device for transmitting sounding reference signals in an unlicensed frequency band disclosed in the present invention, SRS of any symbol length can be flexibly transmitted without increasing the number of sounding reference signal resource groups.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for transmitting a sounding reference signal in an unlicensed frequency band. Background technique [0002] In a future communication system, an unlicensed frequency band (unlicensed band) can be used as a supplement to a licensed frequency band (licensed band) to help operators expand service capacity. In order to keep the deployment consistent in the New Radio (NR) system and maximize the unlicensed access based on the NR system as much as possible, the unlicensed frequency band can work in the 5GHz, 37GHz and 60GHz frequency bands. The large bandwidth (80MHz or 100MHz) of the unlicensed frequency band can reduce the implementation complexity of the base station and the terminal (User Equipment, UE), but since the unlicensed frequency band is shared by multiple radio access technologies (Radio Access Technology, RAT), such as wireless True WiFi, radar,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0048H04L5/0067H04W72/23
Inventor 姜蕾孙晓东
Owner VIVO MOBILE COMM CO LTD