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Sending and using method of measure-reference signals

A technology for measuring reference signals and reference signals, applied in the field of communications, can solve the problem of no LTE-Advanced measurement reference signal transmission method, etc., and achieve the effects of improving overall performance, reducing reference signal overhead, and ensuring performance

Active Publication Date: 2009-09-23
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Currently, there is no LTE-Advanced method for transmitting measurement reference signals for channel state information measurement

Method used

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  • Sending and using method of measure-reference signals
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  • Sending and using method of measure-reference signals

Examples

Experimental program
Comparison scheme
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no. 1 example

[0082] Fig. 2 is a schematic diagram of positions of measurement reference signals in physical resource blocks according to the first embodiment of the present invention. In the case where the cyclic prefix is ​​a regular cyclic prefix, the position of the measurement reference signal in the physical resource block is as follows Figure 2a As shown, in the case where the cyclic prefix is ​​an extended cyclic prefix, the position of the measurement reference signal in the physical resource block is as follows Figure 2b shown.

[0083] In this embodiment, assuming that the number of newly added measurement reference signals is 8, the measurement reference signals are divided into K=8 reference signal groups, and each reference signal group includes measurement reference signals of one antenna logic port. The eight reference signal groups are recorded as: {#0}, {#1}, {#2}, {#3}, {#4}, {#5}, {#6}, {#7}.

[0084] In addition, in this example, P 1 =P 2 =...=P K =P=P max .

...

no. 2 example

[0092] Fig. 3 is a schematic diagram of positions of measurement reference signals in physical resource blocks according to the second embodiment of the present invention. In the case where the cyclic prefix is ​​a regular cyclic prefix, the position of the measurement reference signal in the physical resource block is as follows Figure 3a As shown, in the case where the cyclic prefix is ​​an extended cyclic prefix, the position of the measurement reference signal in the physical resource block is as follows Figure 3b shown.

[0093] In this embodiment, assuming that the number of newly added measurement reference signals is 8, the measurement reference signals are divided into K=4 reference signal groups, and each reference signal group contains measurement reference signals of two antenna logic ports; the 4 The reference signal groups are recorded as: {#0, #1}, {#2, #3}, {#4, #5}, {#6, #7}.

[0094] In addition, in this example, P 1 =P 2 =...=P K =P=P max .

[0095]...

no. 3 example

[0102] Fig. 4 is a schematic diagram of positions of measurement reference signals in physical resource blocks according to the third embodiment of the present invention. In the case where the cyclic prefix is ​​a regular cyclic prefix, the position of the measurement reference signal in the physical resource block is as follows Figure 4a As shown, in the case where the cyclic prefix is ​​an extended cyclic prefix, the position of the measurement reference signal in the physical resource block is as follows Figure 4b shown.

[0103] In this embodiment, assuming that the number of newly added measurement reference signals is 8, the measurement reference signals are divided into K=4 reference signal groups, and each reference signal group contains measurement reference signals of two antenna logic ports; the 4 The reference signal groups are recorded as: {#0, #1}, {#2, #3}, {#4, #5}, {#6, #7}.

[0104] In addition, in this example, P 1 =P 2 =...=P K =P=P max .

[0105] ...

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Abstract

A sending and using method of measure-reference signals comprises the steps of: bearing the measure-reference signals of the same reference signal group into the same resource block to send and respectively bearing the measure-reference signals of different reference signal groups into different resource blocks to send, wherein the reference signal group of number i contains Ni measure-reference signals used for the measure of channel state information, each reference signal group contains different measure-reference signals, Ni is not less than 1, i is equal to 1 to K, and K is a positive integer. The adoption of the method guarantees transmission property simultaneously when ensuring less reference signal expenses as much as possible, and can be compatible with the existing LTE system well, thus realizing high-order MIMO transmission and improving the overall performance of the system.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for sending and using a measurement reference signal. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) technology is essentially a multi-carrier modulation communication technology, which is one of the core technologies in the fourth generation (4G) mobile communication system. In the frequency domain, the OFDM multipath channel exhibits frequency-selective fading characteristics. In order to overcome this fading, the channel is divided into multiple sub-channels in the frequency domain. The spectral characteristics of each sub-channel are approximately flat, and each sub-channel of OFDM The channels are orthogonal to each other, so the spectrums of the sub-channels are allowed to overlap each other, so that the spectrum resources can be utilized to the greatest extent. [0003] MIMO (Multiple Input and Multiple Output) technology can increase sy...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12H04L27/26H04B7/04
CPCH04W72/08H04W72/54
Inventor 戴博郁光辉陈艺戬李卫军
Owner ZTE CORP
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