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Transmission method and equipment of non-periodic SRS (Stimulated Raman scattering) in TDD (Time Division Duplexing) system

A transmission method, aperiodic technology, applied in the field of communication, to achieve the effect of small changes

Active Publication Date: 2012-04-04
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Embodiments of the present invention provide a method and device for aperiodic SRS transmission in a TDD system, and solve the aperiodic SRS transmission in a special subframe of a TDD system by specifying symbols for transmitting aperiodic SRS in a special subframe in a TDD system question

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  • Transmission method and equipment of non-periodic SRS (Stimulated Raman scattering) in TDD (Time Division Duplexing) system
  • Transmission method and equipment of non-periodic SRS (Stimulated Raman scattering) in TDD (Time Division Duplexing) system
  • Transmission method and equipment of non-periodic SRS (Stimulated Raman scattering) in TDD (Time Division Duplexing) system

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Embodiment Construction

[0030] In the LTE-A 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 one-time sounding through dynamic scheduling.

[0031] But for the TDD system, due to the existence of special subframes, and there may be two symbols in the UpPTS in the special subframes that can be used for sounding, that is, sending aperiodic SRS, so how to determine in which symbol to perform aperiodic SRS transmission , has become an urgent problem to be solved.

[0032] The embodiment of the present invention proposes an aperiodic SRS transmission method in a TDD system. When aperiodic SRS transmission needs to be performed in a special subframe, the terminal device and the network side device determine the symbol for transmitting the aperiodic SRS through a corresponding str...

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Abstract

The embodiment of the invention discloses a transmission method and equipment of non-periodic SRS (signal reference structure) in a TDD (Time Division Duplexing) system. By adopting the technical scheme of the embodiment of the invention and defining the sign of non-periodic SRS transmission in a special sub-frame of the TDD system, the condition that the transmission position cannot be determined when a plurality of signs which can be used for non-periodic SRS transmission exist in an uplink pilot frequency timeslot is avoided, the non-periodic SRS transmission problem in the special sub-frame of the TDD system is solved, and the modification on corresponding indication information is little, and no excessive system resource is occupied.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a transmission method and equipment of an aperiodic SRS in a TDD system. Background technique [0002] In an existing LTE (Long Term Evolution, long-term evolution) system, detection of an uplink channel is accomplished through a sounding (detection) signal. By sending the sounding signal at the last symbol of the SRS (Sounding Reference Signal, Sounding Reference Signal) subframe, the base station can obtain uplink channel information, so as to perform resource scheduling and measurement for uplink transmission, including RI (Rank Indication, level indication) / PMI (Precoding Matrix Indicator, precoding matrix indication) / CQI (Channel Quality Indication, channel quality indication) measurement, etc. 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...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/16H04L5/00
CPCH04L5/00H04L5/1469H04L1/16H04J3/1694H04L1/00H04L5/0078H04L5/0048
Inventor 陈文洪潘学明高秋彬丁昱
Owner DATANG MOBILE COMM EQUIP CO LTD
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