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Reference signal received power measurement method, device and terminal

A technology of reference signal and received power, applied in the field of communication

Inactive Publication Date: 2014-05-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similarly, in other communication systems, there is also the problem of improving the accuracy of pilot power measurement, and new estimation algorithms need to be continuously explored

Method used

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  • Reference signal received power measurement method, device and terminal
  • Reference signal received power measurement method, device and terminal
  • Reference signal received power measurement method, device and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] This embodiment introduces a measurement device for Reference Signal Received Power (RSRP), such as figure 1 As shown, it includes a data sequence acquisition unit 101, a total power calculation unit 102, a data sequence N-order processing unit 103, a noise power calculation unit 104 and an RSRP calculation unit 105, wherein:

[0113] The data sequence obtaining unit 101 is used to obtain M columns of data sequence y containing pilot information m (k), where k is 1 to K m The integer serial number of K m is the data sequence y m (k) length; m is an integer sequence number from 1 to M, and M is the number of data sequences;

[0114] The total power calculation unit 102 is configured to calculate the total power Power_Total of the reference signal and noise based on the data sequence;

[0115] The data sequence N-level processing unit 103 is configured to perform N-level processing on the data sequence, where N is a positive integer;

[0116] The noise power calculat...

Embodiment 2

[0149] This embodiment introduces a RSRP measurement method, such as figure 2 shown, including:

[0150] Step 201, obtain M columns of data sequence y containing pilot information m (k), where k is 1 to K m The integer serial number of K m is the data sequence y m (k) length; m is an integer sequence number from 1 to M, and M is the number of data sequences;

[0151] Preferably, in the M column data sequence, the same column y m (k) Contains pilot information of the same transmit antenna port;

[0152] same column y m (k) Pilot information containing the same transmit antenna port refers to: the same column y m (k) is obtained after processing the information sequence received on the pilot time-frequency resource sequence of the same transmitting antenna port.

[0153] Get M columns of data sequence y containing pilot information m (k), including: acquiring M columns of data sequence y containing pilot information in the same subframe m (k); Or, obtain M column and ...

application example 1

[0175] image 3 It is the CRS time-frequency resource diagram of the LTE downlink transmission mode. The direction of the abscissa is the direction of the time domain. The length of each small square represents the length of an OFDM symbol. The figure only shows the length of one subframe (a subframe contains There are 14 OFDM symbols); the ordinate direction is the frequency domain direction, the length of each small square represents the length of a subcarrier, and the figure only shows the length of a PRB (a PRB contains 12 subcarriers); each A grid represents a RE time-frequency resource.

[0176] image 3 , marked with "R 0 The time-frequency resource of " is the position where the pilot information transmitted by the antenna with the port number "0" is located. This time-frequency resource is called the pilot time-frequency resource. In this paper, the pilot time-frequency resource refers to the transmission Information time-frequency resources. Pilot signals are also...

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Abstract

The invention discloses a reference signal received power measurement method, device and terminal and can improve reference signal received power (RSRP) measurement accuracy. The method includes acquiring M data sequences ym(k) containing pilot frequency information; calculating the main power of a reference signal and noise based on the data sequences; conducting N-stage processing on the data sequences; calculating noise power based on the data sequences subjected to the N-stage processing and calculating an RSRP value based on the main power and the noise power. The device comprises a data sequence acquiring unit, a main power calculating unit, a data sequence N-stage processing unit, a noise power calculation unit and an RSRP calculation unit. The method has the advantages of being simple in operation, small in terminal power consumption, high in noise restraining capability and high in RSRP estimation accuracy under the condition that the signal to noise ratio is low.

Description

technical field [0001] The present invention relates to the communication field, in particular to a reference signal received power (Reference signal received power, referred to as RSRP) measurement method, device and terminal. Background technique [0002] LTE (Long Term Evolution, long-term evolution) is a wireless cellular communication technology of 4G (Fourth Generation, fourth generation). In LTE Release-8, the terminal needs to measure the signal power of the received cell reference signal (reference signal can also be called pilot signal) CRS (Cell-specific reference signal), and then report to the base station after meeting the criteria configured by the base station . The power of the received CRS signal is RSRP, which is defined as the average value of the linear power at the resource positions carrying the CRS signal within the measurement bandwidth. [0003] The base station may select the cell with the largest RSRP value as the serving cell of the terminal ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04L27/26
Inventor 辛雨倪佳
Owner ZTE CORP
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