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Method, terminal and base station for triggering terminal to transmit measurement reference signals

A technology for measuring reference signals and sending by terminals, applied in the field of communication, can solve the problems of resource waste, inflexibility, and high measurement delay, and achieve the effect of meeting different measurement needs, avoiding high overhead, and flexible matching resources

Active Publication Date: 2011-04-13
SNAPTRACK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the second method can reduce the load of PDCCH, it is not flexible enough. For example, if the bandwidth in the preset resource pattern is very narrow, when measuring a wider frequency band, it needs to send SRS multiple times to cover it. The frequency band that needs to be measured will cause large PDCCH overhead and high measurement delay; and if the bandwidth in the preset resource pattern is very wide, when a narrower frequency band is measured, the frequency band that does not need to be measured will also be Overwritten by the sent SRS, resulting in waste of resources

Method used

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  • Method, terminal and base station for triggering terminal to transmit measurement reference signals
  • Method, terminal and base station for triggering terminal to transmit measurement reference signals
  • Method, terminal and base station for triggering terminal to transmit measurement reference signals

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Embodiment 1

[0039] This embodiment will be described from the perspective of a base station, and the base station may specifically be an evolved base station, or other entities with similar functions.

[0040] A triggering method, comprising: acquiring measured demand information; selecting resources for a terminal that needs to be triggered in a preset resource pattern according to the acquired demand information, wherein resources corresponding to various demand information are preset in the resource pattern Information; use the selected resource to trigger the terminal to send SRS.

[0041] see figure 1 , the specific process can be as follows:

[0042] 101. Obtain measurement requirement information; wherein, the requirement information may specifically include the location and bandwidth of the frequency band to be measured, and optionally, may also include the time delay of the measurement, the number of PDCCHs that need to be triggered, and the quality requirements of the measureme...

Embodiment 2

[0057] On the basis of Embodiment 1, in addition to presetting at least one resource pattern on the base station, it is also necessary to configure these resource patterns to the terminal. Specifically, the configuration can be performed by the user directly on the terminal, or by the base station through high-level signaling Configure on the terminal, that is, before triggering the terminal, the trigger method can also include:

[0058] Configure at least one preset resource pattern to the terminal through high-level signaling.

[0059] In this way, after the terminal is triggered by the base station, it can determine the required resource pattern among multiple resource patterns according to the trigger time, determine the resource in the resource pattern, and then use the determined resource to send the SRS.

[0060] Among them, resource information corresponding to various demand information is preset in these resource patterns, that is, different demand information is con...

Embodiment 3

[0070] This embodiment will be described from the perspective of a terminal.

[0071] A triggering method, comprising: receiving a trigger from a base station, selecting a resource in a preset resource pattern according to the trigger, and sending an SRS according to the selected resource, wherein the resource patterns are preset with multiple bandwidths and the corresponding bandwidths of the various bandwidths resource information.

[0072] see figure 2 , the specific process can be as follows:

[0073] 301. Receive a trigger from a base station;

[0074] 302. Select resources from preset resource patterns according to the trigger in step 301;

[0075] For example, the subframe number can be determined according to the trigger in step 301, a resource pattern can be determined among multiple preset resource patterns according to the determined subframe number, and then a resource can be selected in the determined resource pattern.

[0076] Among them, resource informatio...

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Abstract

Embodiments of the present invention disclose triggering method, terminal and base station. The method comprises the following steps: obtaining the requirement information of measurement, wherein the requirement information comprises position and bandwidth of a frequency range to be measured; selecting resources from at least two predetermined resource patterns for the terminal according to the requirement information, wherein each of at least two predetermined resource patterns is respectively provided with a plurality of resource information in advance for indicating the resources; triggering the terminal to transmit a measurement reference signal by using the selected resources. In the technical scheme, different measurement requirements have the corresponding resource information, so the resources are matched flexibly; different measurement requirements can be satisfied; the phenomenon of high PDCCH expense or resource waste in the prior art is avoided.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201010228436.8 and the title of the invention "a trigger method, terminal and base station" submitted to the China Patent Office on July 13, 2010, the entire contents of which are incorporated in this application by reference middle. technical field [0002] The present invention relates to the field of communication technology, in particular to a method for triggering a terminal to send a measurement reference signal, a terminal and a base station. Background technique [0003] In the further long-term evolution (LTE-A, Long Term Evolution Advanced) communication system, the terminal needs to transmit a measurement reference signal (SRS, Sounding Reference Signal) to the evolved base station (eNB, E-UTRANNodeB) to help the evolved base station obtain uplink channel information , so as to realize functions such as frequency selective scheduling and link adaptation. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04B17/00H04W72/54
CPCH04L5/0048H04W72/042H04L5/0092H04L5/0051H04W72/04H04L5/0058H04W72/23
Inventor 李强大卫·马瑞泽
Owner SNAPTRACK
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