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Method for transmitting sounding reference signal (SRS), apparatus and system

A technology for measuring reference signals and sending methods, applied in the field of communication

Active Publication Date: 2016-10-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no effective solution for the above-mentioned problems in related technologies

Method used

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  • Method for transmitting sounding reference signal (SRS), apparatus and system
  • Method for transmitting sounding reference signal (SRS), apparatus and system
  • Method for transmitting sounding reference signal (SRS), apparatus and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0155] In this embodiment, the base station sends SRS configuration information to the user terminal, where the configuration information includes: precoding enabling indication information for indicating whether to perform precoding on the SRS; where the downlink transmission mode and precoding The enabling indication information is related, that is, the precoding enabling indication information includes a downlink transmission mode.

[0156] When the base station configures the terminal device to be in the downlink transmission mode, set the SRS sent by the terminal device to be a precoded SRS; when the base station configures the terminal device to be in the uplink transmission mode, set the SRS sent by the terminal device to be a non-precoded SRS;

[0157] Alternatively, when the base station configures the terminal device to be in downlink transmission mode 8, or downlink transmission mode 9, or downlink transmission mode 10, or downlink transmission mode 11, the SRS sent ...

Embodiment 2

[0162] The method for sending a measurement reference signal provided in this embodiment is implemented by a system including a base station and a user terminal. in,

[0163] The base station is configured to trigger the user terminal to send a measurement reference signal, and send configuration information for sending the measurement reference signal to the user terminal;

[0164] The above configuration information includes one or more of the following indication information: precoding enabling indication information of the measurement reference signal, and precoding information of the measurement reference signal.

[0165] The user terminal is configured to send a measurement reference signal to the base station according to the obtained configuration information.

[0166] In this embodiment, the base station sends configuration information for sending measurement reference signals to the user terminal according to Figure 6 Configure as shown:

[0167] For aperiodic SR...

Embodiment 3

[0173] In this embodiment, the base station sends SRS configuration information to the user terminal, where the configuration information includes: precoding enabling indication information used to indicate whether the terminal device precodes the SRS, and the precoding The enabling indication information includes: information indicating the period and subframe offset of the precoded SRS, and the base station sets the information about the period and subframe offset of the precoded SRS for the terminal device through high layer RRC signaling.

[0174] On the subframe for sending SRS set by the base station, when the subframe index satisfies the relationship between the precoded SRS period and the subframe offset, for example: (10 n f +k SRS -T offset ) modT SRS = 0, or satisfy (k SRS -T offset,1 ) mod5=0, the terminal device sends a precoded SRS; otherwise, sends a non-precoded SRS.

[0175] Among them, n f is the system frame number, k SRS is the subframe index number ...

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Abstract

The invention provides a method for transmitting sounding reference signals (SRS). The method includes the following steps that: a base station sets the configuration information of the sounding reference signals (SRS) and issues the configuration information of the sounding reference signals (SRS) to a terminal device, wherein the configuration information contains precoding enabling indication information used for indicting the terminal device whether to pre-code the SRS or not, wherein the precoding enabling indication information contains a downlink transmission mode, or a downlink control signaling format, or the number of the transmission blocks of the terminal device, or the joint indication information of an antenna port, an scrambling ID and the number of layers. The invention also provides an apparatus for realizing the method and a system.

Description

technical field [0001] The present invention relates to a measurement reference signal (Sounding Reference Signal, SRS for short) transmission technology in the communication field, and in particular to a method, device and system for sending an SRS. Background technique [0002] The SRS is a signal used to measure wireless channel information (Channel State Information, CSI for short) between a terminal device and a base station. In the Long Term Evolution system, the UE regularly sends the uplink SRS on the last data symbol of the sending subframe according to the bandwidth, frequency domain position, sequence cyclic shift, period and subframe offset and other parameters indicated by the eNB. The eNB judges the uplink CSI of the UE according to the received SRS, and performs operations such as frequency domain selective scheduling and closed-loop power control according to the obtained CSI. [0003] In the existing research on LTE-A Release 10 (LTE-A Release 10), it is pr...

Claims

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Application Information

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IPC IPC(8): H04L5/00
CPCH04L1/00
Inventor 王瑜新李劲菊陈艺戬鲁照华李儒岳
Owner ZTE CORP
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