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Signal-to-noise ratio measuring method and device for PUCCH (Physical Uplink Control Channel)

A signal-to-noise ratio and signal technology, applied in the field of communications, can solve the problems of being susceptible to noise interference, large fluctuations in noise power, and large fluctuations in the estimated value of signal power.

Active Publication Date: 2013-01-23
如东县东广物流有限公司
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Problems solved by technology

This method has the following problems: 1) only the data part of the signal sent by the UE is used to estimate the signal power, which leads to large fluctuations in the estimated value of the signal power, and is easily affected by noise interference; 2) only one noise interference code channel is used to estimate noise power, such that the estimated noise power fluctuates wildly
The signal-to-noise ratio obtained using this method is not very accurate

Method used

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  • Signal-to-noise ratio measuring method and device for PUCCH (Physical Uplink Control Channel)
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  • Signal-to-noise ratio measuring method and device for PUCCH (Physical Uplink Control Channel)

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[0072] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0073] The present invention is applicable to the situation that the PUCCH format is 1, 1a, 1b.

[0074] In the present invention, the time-frequency resource of one PUCCH is one RB, including two time slots. For the PUCCH with a common prefix, one RB includes 14 symbols in the time domain, and each symbol includes 12 subcarriers; for the PUCCH with the extended prefix, one RB includes 12 symbols in the time domain, and each symbol includes 12 subcarriers.

[0075] For PUCCH with common prefix and formats 1, 1a and 1b, 12 cyclic shift values ​​and 3 or...

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Abstract

The invention relates to a signal-to-noise ratio measuring method and device for a PUCCH (Physical Uplink Control Channel). The signal-to-noise ratio measuring method for the PUCCH comprises the following steps of: calculating a signal power P of UE (User Equipment) through both a data part and a pilot signal part of each UE on the PUCCH in the format of 1, 1a and 1b, and calculating a noise interference power Pn through interference codes increased due to the introduction of an orthogonal sequence Wd3, thereby obtaining a signal-to-noise ratio of the UE. The signal-to-noise ratio measuring device comprises a receiving signal processing module, an extracting module, a signal power calculating module, a noise interference power calculating module and a signal-to-noise ratio calculating module. According to the signal-to-noise ratio measuring method and device for the PUCCH provided by the invention, the accuracy of signal-to-noise ratio of the UE is increased, and performances of a system are improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for measuring the signal-to-noise ratio of a PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel). Background technique [0002] LTE (Long Term Evolution, long-term evolution) is the mainstream technology for the evolution of the third-generation mobile communication (3G) system to 4G. It improves and enhances the air access technology of the 3G system, and adopts OFDM (Orthogonal frequency-division multiplexing, orthogonal frequency division multiplexing) and multiple-input multiple-output (MIMO) as the only standards for its wireless network evolution. It can provide downlink 100Mbit / s and uplink peak rate of 50Mbit / s under 20MHz spectrum bandwidth, which improves the performance of cell edge users, improves cell capacity and reduces system delay. [0003] In an LTE system, a UE (User Equipment, user equipment) uses a PUCC...

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Application Information

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IPC IPC(8): H04W24/08
Inventor 余秋星李卓韩露佳
Owner 如东县东广物流有限公司
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