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Signal to interference and noise ratio measuring method and apparatus thereof

An interference-to-noise ratio and interference-to-noise technology, applied in the field of communications, can solve the problems of low SRS signal density, low Ruu matrix measurement accuracy of SRS signals, and low SINR measurement accuracy, and achieve the effect of improving measurement accuracy

Active Publication Date: 2014-05-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the process of realizing the present invention, the inventors have found that the above-mentioned prior art has at least the following disadvantages: the density of SRS signals is low, and not every subframe contains SRS signals, such as the UE sends SRS signals at intervals; therefore, It will lead to low measurement accuracy of Ruu matrix of SRS signal, which will lead to low measurement accuracy of SINR

Method used

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  • Signal to interference and noise ratio measuring method and apparatus thereof
  • Signal to interference and noise ratio measuring method and apparatus thereof
  • Signal to interference and noise ratio measuring method and apparatus thereof

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Embodiment 1

[0028] see figure 1 , the present embodiment provides a method for measuring a signal-to-interference-to-noise ratio, including:

[0029] 101: Obtain a signal received by the serving cell on the demodulation reference signal DMRS resource, perform channel estimation on the received signal, and obtain a channel estimation result of the serving cell;

[0030] 102: Receive the SRS signal sent by the user in the serving cell, and determine the cooperating set to which the user belongs, and the cooperating set consists of the serving cell and neighboring cells;

[0031] 103: Obtain a channel estimation result of the adjacent cell;

[0032] 104: Calculate the interference noise covariance matrix of the cooperating set according to the channel estimation result of the serving cell and the channel estimation result of the neighboring cell;

[0033] 105: Calculate the SINR according to the interference noise covariance matrix.

[0034] The foregoing method provided in this embodimen...

Embodiment 2

[0045] see image 3 , the present embodiment provides a method for measuring a signal-to-interference-to-noise ratio, including:

[0046] 301: Obtain signals received by all receiving antennas of the serving cell on the DMRS resources in the probing subframe.

[0047] In this embodiment, the serving cell may be any one of the three cells served by a certain base station. There are multiple receiving antennas in the serving cell, such as 2 receiving antennas, then in this step, the signals received by the 2 receiving antennas in the serving cell are specifically obtained.

[0048] In this embodiment, the signal received on the DMRS resource may be a DMRS signal, or an interference-plus-noise signal.

[0049] see Figure 4 , is a schematic diagram of mapping resources of an LTE uplink reference signal, the horizontal direction represents time, and the vertical direction represents frequency. The subframe includes DMRS signals and SRS signals. In the figure, the oblique hatc...

Embodiment 3

[0065] see Figure 5 , the present embodiment provides a signal-to-interference-noise ratio measuring device, comprising:

[0066] The first acquiring module 501 is configured to acquire signals received by the serving cell on demodulation reference signal DMRS resources;

[0067] A channel estimation module 502, configured to perform channel estimation on the received signal to obtain a channel estimation result of the serving cell;

[0068] The determining module 503 is configured to receive a sounding reference signal sent by a user in the serving cell, and determine a cooperating set to which the user belongs, and the cooperating set is composed of the serving cell and neighboring cells;

[0069] The second acquiring module 504 is configured to acquire the channel estimation result of the adjacent cell;

[0070] The calculation module 505 is configured to calculate the interference and noise covariance matrix of the cooperating set according to the channel estimation res...

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Abstract

The invention discloses a signal to interference and noise ratio measuring method and an apparatus thereof, belonging to the communication technology field. The method comprises the following steps: acquiring a received signal of a present service cell on DMRS (demodulated reference signal) resource and carrying out channel estimation; receiving a detection reference signal sent by a user in the present service cell, determining a cooperation set to which the user belongs, and acquiring a channel estimation result of an adjacent cell; according to a channel estimation result of the present service cell and the channel estimation result of the adjacent cell, calculating an interference noise covariance matrix; calculating an SINR (signal to interference and noise ratio) according to the interference noise covariance matrix. The apparatus comprises a first obtaining module, a channel estimation module, a determination module, a second obtaining module and a calculation module. According to the method and the apparatus in the invention, measuring precision of the SINR is raised.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for measuring the signal-to-interference-noise ratio. Background technique [0002] CoMP (Coordinated Multi-Point transmission / reception, coordinated multi-point transmission) is one of the key technologies of LTE-A (Long Term Evolution advanced, subsequent long-term evolution), which is used to expand the coverage of high data rates and improve the average throughput of the system rate, especially to improve the performance of cell edge users. For UL-CoMP (Uplink Coordinated Multi-Point transmission / reception, uplink multi-point coordinated transmission), the joint reception mechanism of multiple cells can be used, such as scheduling coordination between base stations to avoid interference or joint reception can be used to obtain CoMP Gain, and does not require protocol support, it is easy to implement. [0003] In UL-CoMP technology, based on requir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04B17/00H04W24/00H04B17/309H04B17/345
Inventor 马霓杨春明彭晶波刘敬全杨晓倪观军
Owner HUAWEI TECH CO LTD