Method and system for configuration of measurement reference signals in LTE-A system

A technology for measuring reference signals and LTE-A, which is applied in the field of communication, can solve problems such as not being able to meet the needs of channel measurement, achieve the effect of meeting the requirements of channel measurement, increasing the frequency of channel measurement, and avoiding influence and conflict

Active Publication Date: 2010-08-18
ZTE CORP
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Problems solved by technology

However, the current periodic SRS cannot meet the needs of channel measurement

Method used

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  • Method and system for configuration of measurement reference signals in LTE-A system
  • Method and system for configuration of measurement reference signals in LTE-A system
  • Method and system for configuration of measurement reference signals in LTE-A system

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Embodiment Construction

[0083] In order to meet the channel measurement needs of the LTE-Advanced system, the present invention proposes an aperiodic SRS configuration mechanism so that the base station can trigger the UE to send the SRS signal at any time (when it thinks it is necessary) to measure the channel at any time. In this text, the resource for sending periodic SRS is called periodic SRS resource, and the resource for sending aperiodic SRS is called aperiodic SRS resource.

[0084] The inventive concept of the present invention is that the base station triggers one or more UEs to send aperiodic SRS on one or more uplink subframes through downlink control signaling.

[0085] After receiving the downlink control signaling sent by the base station, the UE uses the aperiodic SRS resource to send the aperiodic SRS on the uplink subframe according to the trigger of the base station.

[0086] The number of the uplink subframes is notified to the UE by the base station through high-level signaling or phys...

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Abstract

The invention discloses a method and a system for configuration of measurement reference signals in an LTE-A system, thereby leading a base station to be convenient to trigger a UE to send SRS signals at any time and measuring a channel at any time. The configuration method comprises the following steps: leading the base station to trigger one or more user equipment (UE) to send non-periodic measurement reference signals (SRS) on one or more uplink sub-frames through downlink control signaling. The adoption of the non-periodic SRS configuration method and the system can determine resources used by the non-periodic SRS, improve the UE channel measurement efficiency and better meet the requirements on the channel measurement of the LTE-A system. In addition, the impacts and the conflicts of periodic and non-periodic SRS in the LTE-A system can be effectively avoided by reserving the non-periodic SRS resources.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular to a method and system for configuring a measurement reference signal (SRS) in an LTE-A system. Background technique [0002] In the Long Term Evolution (LTE) system, user equipment (User Equipment, UE) transmits according to the configuration information of the base station (e-node-B, eNB) at a certain time and frequency position using a certain resource period Measurement reference signal (Sounding Reference Signal, SRS). The eNB measures wireless channel information (channel state information, CSI) according to the received SRS signal, and performs operations such as scheduling, power control, and resource allocation according to the obtained CSI. [0003] LTE system FDD (Frequency Division Duplex, frequency division duplex) mode frame structure (also known as the first type of frame structure, namely frame structure type 2) and TDD (Time Division Duplex, time division duplex)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04B1/707
CPCH04L5/0082H04L5/0094H04W88/08H04L5/0051H04W88/02H04W72/1289H04W72/085H04L5/0092H04L5/0048
Inventor 郝鹏喻斌
Owner ZTE CORP
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