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Method and equipment for transmitting non-periodic SRS (Sounding Reference Signal)

A transmission method and aperiodic technology, applied in the field of communication, can solve the problems of increasing PDCCH resource overhead, unbearable PDCCH, waste of configuration bit resources, etc., and achieve the effects of reducing signaling overhead, low delay, and large detection bandwidth

Active Publication Date: 2011-06-01
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0006] In the prior art, configuring the aperiodic SRS by introducing the SRS-specific DCI format will greatly increase the resource overhead of the PDCCH, and at the same time, a certain amount of resource waste may be caused due to fewer configuration bits.
If there are many active users, the resource overhead will be very large, making the PDCCH unbearable

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Embodiment Construction

[0027] In the LTE-A system, due to the introduction of multi-antenna transmission, a periodic SRS (Sounding Reference Signal, sounding reference signal) 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.

[0028] How to perform resource scheduling of the aperiodic SRS, and how the terminal sends the aperiodic SRS after receiving the signaling from the base station are all problems to be solved.

[0029] The embodiment of the present invention proposes an aperiodic SRS transmission method. The base station configures aperiodic SRS parameters through high-level signaling, and the terminal performs SRS transmission according to the configuration, which can reasonably and effectively perform aperiodic SRS resource scheduling and transmission.

[0030] In order to solve the problems existin...

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Abstract

The embodiment of the invention discloses a method and equipment for a non-periodic SRS (Sounding Reference Signal). By implementing the technical scheme provided by the embodiment of the invention, a base station carries out non-periodic SRS quasistatic configuration on a mobile terminal so as to reduce signaling overhead; one the one hand, different or same CS (Cycle Shift) and resource positions can be configured for different sub-frames so as to improve the flexibility of system configuration; and on the other hand, the non-periodic SRS can be transmitted in a plurality of sub frames so as to reduce the system delay and increase the detection band width; and a more flexible timing manner is set in the mobile without generating excess limitation on scheduling.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and equipment for transmitting an aperiodic SRS. Background technique [0002] In the existing system, the detection of the uplink channel is completed through the 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 and measurement for uplink transmission, including RI / PMI / CQI measurement. 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 parameters of the periodic SRS are all configured through the high layer, including CS (Cycle Shift, cyclic shift) of the SRS, bandwidth, frequency hopping parameters, period, and sending subframe position. [0003] Due to the long scheduling period and low s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/12
CPCH04W28/18H04W28/06H04W88/08H04W24/00H04W48/08H04W72/042H04W72/23
Inventor 陈文洪缪德山潘学明孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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