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Method and device for distributing bandwidth of uplink sounding reference signal

A technology for sounding reference signal and bandwidth, applied in the field of mobile communication, can solve the problems of limited power, not very good, affecting system scheduling performance, etc., to achieve the effects of reasonable allocation, improved accuracy, and improved scheduling performance

Active Publication Date: 2010-02-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Description
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AI Technical Summary

Problems solved by technology

[0006] Terminal power is limited. If a large SRS bandwidth is allocated to users with poor channel conditions based on the above scheduling bandwidth, it will not be possible to accurately measure channel information and affect the scheduling performance of the entire system. Therefore, when allocating SRS bandwidth for UEs, the terminal must also be considered. Power-limited factors; but currently there is no good way to judge whether the terminal will reach the power limit when transmitting SRS of a certain bandwidth level

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  • Method and device for distributing bandwidth of uplink sounding reference signal
  • Method and device for distributing bandwidth of uplink sounding reference signal
  • Method and device for distributing bandwidth of uplink sounding reference signal

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Embodiment Construction

[0021] The basic idea of ​​the embodiment of the present invention is to use known parameters to determine the SRS signal transmission power margin, and compare the power margin with the preset threshold value to determine whether the current SRS bandwidth level causes power limitation , so that the allocation of SRS bandwidth is more reasonable, the accuracy of user channel detection can be improved, and the scheduling performance of the entire system can be improved.

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present in...

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Abstract

The invention discloses a method for distributing the bandwidth of an uplink sounding reference signal, which comprises the steps of: determining the bandwidth grade of the current sounding referencesignal (SRS) according to scheduling bandwidth; determining SRS transmission power margin corresponding to the current SRS bandwidth grade; utilizing the SRS transmission power margin to judge whetherthe bandwidth corresponding to the current bandwidth grade is power limited; if so, reducing one bandwidth grade to re-determine the SRS transmission power margin; otherwise, distributing the bandwidth corresponding to the current bandwidth grade for a user terminal. The embodiment of the invention also provides a device for distributing the bandwidth of the uplink sounding reference signal. Theadoption of the method and the device can ensure that the distribution of SRS bandwidth is more reasonable, can improve the accuracy of the sounding of user channels, and further promote the scheduling performance of the whole system.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and device for allocating uplink sounding reference signal bandwidth. Background technique [0002] For the existing LTE system, the most important limitation on the transmission of uplink SRS (Sounding Reference Signal, Sounding Reference Signal) in the current specification is the regulation related to the allocation of transmission bandwidth: [0003] Among them, it is stipulated that the base station allocates bandwidth for sending SRS signals to each user, and the bandwidth is divided into multiple levels; specifically, there are four different bandwidth levels under each bandwidth configuration, and the base station allocates each user and passes the RRC signal. order to notify the user. [0004] At present, the factors that need to be considered for the allocation of SRS bandwidth include: UE scheduling bandwidth and terminal power. First fac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W72/08H04W72/12H04B1/707H04W72/54
CPCY02D30/70
Inventor 潘学明索士强肖国军
Owner DATANG MOBILE COMM EQUIP CO LTD
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