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Sounding reference signal transmitting method and device, sounding reference signal receiving method and device, UE and base station

A technology of sounding reference signal and transmission method, which is applied in the field of receiving method, device, sounding reference signal transmission, UE and base station, and can solve the problem of few SRS transmission opportunities

Inactive Publication Date: 2017-10-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The present invention provides a sounding reference signal sending and receiving method, device, UE and base station to at least solve the problem of few transmission opportunities in the transmission of SRS on unlicensed carriers in related technologies

Method used

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  • Sounding reference signal transmitting method and device, sounding reference signal receiving method and device, UE and base station
  • Sounding reference signal transmitting method and device, sounding reference signal receiving method and device, UE and base station
  • Sounding reference signal transmitting method and device, sounding reference signal receiving method and device, UE and base station

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Embodiment 1

[0165] In this embodiment, a transmission method of a periodic sounding reference signal SRS on an unlicensed carrier is provided. It is assumed that the SRS parameter or parameter set is the same as that in the existing LTE protocol. The SRS parameter set includes at least one of the following: cell-level bandwidth C SRS , cell subframe configuration I SRS , UE-level bandwidth B SRS , frequency hopping bandwidth b hop , frequency domain position n RRC , duration, UE level I SRS Logo (corresponding to cycle T SRS and the subframe offset T within the period offset ), transmission comb cyclic shift Transmission comb number K TC , the number of antenna ports N ap .

[0166] For LAA, under frame structure 3 (the default is downlink subframe in a wireless frame, and uplink transmission can only be performed after the terminal receives the corresponding instruction or signaling), due to the difference in uplink and / or downlink traffic, As a result of LBT, the position ...

Embodiment 2

[0187] In this embodiment, a transmission method of an aperiodic sounding reference signal SRS on an unlicensed carrier is provided.

[0188] It is assumed that the SRS parameter or parameter set is the same as that in the existing LTE protocol. The SRS parameter set includes at least one of the following: cell-level bandwidth C SRS , cell subframe configuration I SRS , UE-level bandwidth B SRS , frequency hopping bandwidth b hop , frequency domain position n RRC , duration, UE level I SRS Logo (corresponding to cycle T SRS and the subframe offset T within the period offset ), transmission comb cyclic shift Transmission comb number K TC , the number of antenna ports N ap .

[0189] The difference between Embodiment 2 and Embodiment 1 is that the terminal can perform SRS transmission according to the four situations in Embodiment 1 above only after receiving the aperiodic SRS trigger signaling sent by the base station. Wherein, triggering the aperiodic SRS transmi...

Embodiment 3

[0207] In this embodiment, a method for determining the time-domain transmission position of the Sounding Reference Signal SRS is provided.

[0208] Based on Embodiments 1 and 2, according to the SRS parameter configuration in the existing protocol, the SRS transmission opportunity is limited to a certain extent in the LAA. Therefore, in this embodiment, a new SRS parameter set is designed for LAA. Specifically, how to determine the location of the SRS transmission on the unlicensed carrier.

[0209] The time-domain transmission location of the sounding reference signal SRS can be determined by one of the following methods:

[0210] Way 1: The period in the SRS parameter set and the subframe offset within the period are determined.

[0211] The elements in the SRS parameter set include at least one of the following: cell-level bandwidth, cell subframe configuration, UE-level bandwidth, frequency hopping bandwidth, frequency domain position, UE-level subframe configuration (c...

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Abstract

The invention discloses a sounding reference signal transmitting method and device, a sounding reference signal receiving method and device, UE and a base station. The sounding reference signal transmitting method comprises the steps of determining a resource used for transmitting sounding reference signals (SRS) on an unlicensed carrier; and transmitting the SRS according to the determined resource. According to the invention, a problem of little transmission opportunity for transmitting the SRS on the unlicensed carrier in related technologies is solved, and thus the effect of improving the opportunity for transmitting the SRS on the unlicensed carrier is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a sounding reference signal sending and receiving method, device, UE and base station. Background technique [0002] With the rapid growth of data services, the pressure of data transmission on the carrier of the licensed spectrum is also increasing. Therefore, using unlicensed spectrum carriers to share the data traffic in licensed carriers becomes an important evolution direction in the subsequent development of Long Term Evolution (LTE for short). Among them: the unlicensed spectrum has the following characteristics: free / low cost; low access requirements; low cost; large available bandwidth; resource sharing; and so on. [0003] The Rel-13 version of the LTE system started research in September 2014, and one of the important research topics is that the LTE system uses unlicensed spectrum or carrier to work. This technology will enable the LTE system to use the existing un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0048H04L5/005H04W74/0816H04W76/27H04L5/0051H04L5/0053H04W72/0446H04W74/002H04W16/14H04W74/0808H04W72/23
Inventor 杨玲苟伟赵亚军彭佛才毕峰
Owner ZTE CORP
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