Resource determining method of special demodulation data reference signal

A technology for demodulating data and reference signals, which is applied in the field of reference signals in mobile communications, and can solve problems such as undetermined multiplexing methods

Inactive Publication Date: 2010-01-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although LTE-A and other systems have basically determined the overhead of the dedicated demodulation data reference signal, the RE position it occupies in an RB and the multiplexing method between different layers have not yet been determined.

Method used

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  • Resource determining method of special demodulation data reference signal
  • Resource determining method of special demodulation data reference signal
  • Resource determining method of special demodulation data reference signal

Examples

Experimental program
Comparison scheme
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no. 1 example

[0156] In this embodiment, the number of layers is divided into two categories, the total number of layers being 1 or 2 is the first category, and the total number of layers is greater than 2 is the second category.

[0157] FIG. 2(A) is a schematic diagram of the location of the first type of dedicated demodulation data reference signal in an RB. As shown in Figure 2(A), all dedicated demodulation data reference signals in the first category occupy 12 REs in one RB, and the positions of these 12 REs in one RB can be expressed in the form of coordinates (x, y) Expressed as:

[0158] (6,2) (7,2) (13,2) (14,2)

[0159] (6,6) (7,6) (13,6) (14,6)

[0160] (6,10) (7,10) (13,10) (14,10);

[0161] Wherein, x represents an OFDM symbol index in one RB, and y represents a subcarrier index in one RB. In the following embodiments, unless otherwise specified, the position of the RE in the RB is expressed in the form of coordinates (x, y).

[0162] Alternatively, the position of the fi...

no. 2 example

[0200] According to the number of layers, it is divided into 2 categories. The total number of layers is 1 or 2 for the first category, and the total number of layers is greater than 2 for the second category.

[0201] FIG. 3(A) is a schematic diagram of the location of the first type of dedicated demodulation data reference signal in the RB. As shown in Figure 3(A), all dedicated demodulation data reference signals in the first category occupy 12 REs in one RB, and the positions of these 12 REs in one RB can be expressed in the form of coordinates (x, y) Expressed as:

[0202] (6,1) (7,1) (13,1) (14,1)

[0203] (6,6) (7,6) (13,6) (14,6)

[0204] (6, 11) (7, 11) (13, 11) (14, 11).

[0205] Alternatively, the position of the first type of dedicated demodulation data reference signal in one RB can also be expressed as:

[0206] The first subcarriers of the sixth, seventh, thirteenth and fourteenth OFDM symbols;

[0207] the sixth subcarrier of the sixth, seventh, thirteenth...

no. 3 example

[0241] According to the number of layers, it is divided into 2 categories. The total number of layers is 1 or 2 for the first category, and the total number of layers is greater than 2 for the second category.

[0242]FIG. 4(A) is a schematic diagram of the location of the first type of dedicated demodulation data reference signal in the RB. As shown in Figure 4(A), all dedicated demodulation data reference signals in the first category occupy 12 REs in one RB, and the positions of these 12 REs in one RB can be expressed in the form of coordinates (x, y) Expressed as:

[0243] (6,2) (7,2) (13,2) (14,2)

[0244] (6,6) (7,6) (13,6) (14,6)

[0245] (6,10) (7,10) (13,10) (14,10);

[0246] Alternatively, the position of the first type of dedicated demodulation data reference signal in one RB can also be expressed as:

[0247] The second subcarrier of the sixth, seventh, thirteenth and fourteenth OFDM symbols;

[0248] the sixth subcarrier of the sixth, seventh, thirteenth and ...

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Abstract

The invention discloses a resource determining method of a special demodulation data reference signal, which is used for determining a position of a resource unit occupied by the special demodulation reference signal in a resource block. In the method, the special demodulation reference signal is carried on the resource unit of a non-public reference signal in the resource block and an orthogonal frequency division multiplexing symbol where a non-public reference signal is located. Compared with the prior art, the method uses less signaling and less modes, and is easy to realize hardware.

Description

technical field [0001] The present invention relates to reference signals in mobile communication, in particular to a resource determination method for dedicated demodulation data reference signals. 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 mobile communication. 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, thus allowing the spectrum of the sub-channels to overlap each other, so that the spectrum resources can be utilized to the greatest extent. [0003] Multiple-input multiple-output (MIMO...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04B7/26
CPCH04L5/0051H04L27/26
Inventor 郁光辉李儒岳孙云锋戴博张峻峰
Owner ZTE CORP
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