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Transmission indication, transmission method and equipment of aperiodic sounding reference signal

A technology for detecting reference signals and transmission methods, which is applied in the field of wireless communication, can solve the problems of increasing the signaling overhead of the communication system, and achieve the effects of less signaling overhead and simple signaling instructions

Active Publication Date: 2016-08-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] At present, there are too many signalings indicating the aperiodic SRS transmission of the terminal, which increases the additional signaling overhead of the communication system

Method used

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  • Transmission indication, transmission method and equipment of aperiodic sounding reference signal
  • Transmission indication, transmission method and equipment of aperiodic sounding reference signal
  • Transmission indication, transmission method and equipment of aperiodic sounding reference signal

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Embodiment Construction

[0026] The inventor noticed during the invention that:

[0027] In the LTE-A (Long Term Evolution-Advanced, long-term evolution upgrade) system, due to the introduction of multi-antenna transmission, the periodic SRS needs to occupy more physical resources. In order to improve the utilization rate of SRS resources and reduce the overhead of SRS resources, LTE-A introduces aperiodic SRS transmission, and activates non-persistent sounding through dynamic scheduling. According to current conclusions, the aperiodic SRS can be transmitted in a single-antenna port mode, and can also be transmitted in a multi-port mode without precoding. Therefore, how to instruct the terminal on the aperiodic SRS transmission mode is a problem that needs to be solved.

[0028] In the prior art, the number of ports used by the aperiodic SRS is related to whether it is triggered or not and the number of transmit antennas of the UE, and indicating the number of ports used by the terminal aperiodic SRS ...

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Abstract

The invention discloses a transmission instruction, transmission method and equipment of an aperiodic sounding reference signal, comprising: a base station determines the transmission mode that a terminal needs to adopt when transmitting an aperiodic sounding reference signal; the base station instructs the terminal to transmit an aperiodic sounding reference signal The transmission method used. The terminal determines the transmission mode used when transmitting the aperiodic sounding reference signal; the terminal transmits the aperiodic sounding reference signal according to the determined transmission mode. The present invention does not conflict with other signaling; and the signaling instruction is simple, and the signaling overhead is small.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to an aperiodic SRS (Sounding Reference Signal, sounding reference signal) transmission instruction, transmission method and equipment. Background technique [0002] In the existing LTE (Long Term Evolution, Long Term Evolution) system, the detection of the uplink channel is completed through a sounding (sounding) signal. By sending the sounding signal at the last symbol of the SRS subframe, the base station can obtain uplink channel information, thereby performing resource scheduling for uplink transmission and measurement of various transmission parameters. The SRS in the LTE system is sent periodically, that is, the terminal will continue to send the sounding signal at a certain period until it enters a state of no data transmission. The transmission parameters of the periodic SRS are all configured through the high layer, including the CS (CycleShift, cyclic shift) o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04L1/00
Inventor 陈文洪拉盖施
Owner DATANG MOBILE COMM EQUIP CO LTD
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