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Method and system for sending SRS (survey reference signal)

A transmission method and technology of a transmission system, which are applied in the field of SRS transmission methods and systems, and can solve problems such as a decrease in the number of UEs

Inactive Publication Date: 2011-10-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, when the UE uses multiple antennas to transmit non-precoded SRS, the SRS resources required by each UE will increase, which will result in a decrease in the number of UEs that can be multiplexed simultaneously in the system.

Method used

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  • Method and system for sending SRS (survey reference signal)
  • Method and system for sending SRS (survey reference signal)
  • Method and system for sending SRS (survey reference signal)

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Embodiment Construction

[0069] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0070] The method for sending the SRS provided by the embodiment of the present invention, such as Figure 5 shown, including:

[0071] The UE sends SRS to the base station on time-domain resources, frequency-domain resources and / or code-domain resources; where the time-domain resources include: the last time-domain symbol, or the first time-domain symbol, or the reciprocal of the subframe where the SRS period is located The second time domain symbol; the frequency domain resource includes: the frequency domain position of the SRS or the transmission frequency comb of the SRS; the code domain resource is obtained in the following way: the UE generates the The SRS sequence-group number (SRS sequence-group number), and determine the code domain resources required for sending the SRS according to the generated SRS sequ...

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Abstract

The invention discloses a method and a system for sending an SRS (survey reference signal); the method comprises the following steps: user equipment (UE) transmits the SRS to a base station on a time domain resource, a frequency domain resource and / or a code domain resource, wherein the time domain resource comprises the last time domain sign, the first time domain sign or the last but one time domain sign of a sub-frame of an SRS cycle; the frequency domain resource comprises a frequency domain location of the SRS or a sending frequency comb of the SRS, the code domain resource is obtained by the following method: a sequence group number of the SRS is generated by the UE according to a parameter which is configured for the UE by the base station through a high level signaling and is proprietary by users, and the code domain resource which is needed for sending the SRS is determined according to the generated sequence group number of the SRS. The available resource of the SRS is increased, the user multiplexing capacity of the SRS is improved, and the channel estimation quality of the base station to the SRS is improved, therefore, the application of the coordinated multi-point transmission technology to the system is supported effectively.

Description

technical field [0001] The present invention relates to LTE-Advanced (LTE-A) measurement reference signal (SRS) related technologies, and in particular to a method and system for sending SRS. Background technique [0002] The uplink physical channels of the Long Term Evolution (LTE, Long Term Evolution) system include Physical Random Access Channel (PRACH, Physical Random Access Channel), Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel), Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel). Among them, PUSCH has two different cyclic prefix (CP, Cyclic Prefix) lengths, which are normal cyclic prefix (Normal CP, Normal Cyclic Prefix) and extended cyclic prefix (Extended CP, Extended Cyclic Prefix). Each transmission subframe (Subframe) of the PUSCH is composed of two time slots (Slot). For different cyclic prefix lengths, the position of the demodulation reference signal (DMRS, Demodulation Reference Signal) in the subframe will be di...

Claims

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Application Information

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IPC IPC(8): H04W72/12
CPCH04W8/005H04L5/0051H04L27/2613H04J13/16
Inventor 王瑜新陈艺戬戴博喻斌
Owner ZTE CORP
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