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Mapping method of reference signal and physical resource block

A technology of physical resource blocks and reference signals, applied in communication between multiple stations, multi-frequency code system, etc., can solve the problems of high complexity in the implementation of mapping methods

Active Publication Date: 2017-02-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for mapping reference signals and physical resource blocks to solve the problem of high complexity in the implementation of the mapping method in the related art

Method used

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  • Mapping method of reference signal and physical resource block
  • Mapping method of reference signal and physical resource block
  • Mapping method of reference signal and physical resource block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 7

[0060] Optional embodiment 7, there are 8 channels of multiple reference signals, mapping the 8 channels of reference signals to 4 OFDM symbols of the physical resource block, and mapping each channel of reference signals to M subcarriers on the OFDM symbols specifically includes the following At least one method:

[0061] Method 1: Map multiple reference signals in the first reference signal to the following time-frequency positions: subcarrier A, subcarrier A+4, and subcarrier (A+8) of the first OFDM symbol of the 4 OFDM symbols mod 12; multiple reference signals in the second reference signal are mapped to the following time-frequency positions: subcarrier A, subcarrier A+4, subcarrier (A+8) of the second OFDM symbol of 4 OFDM symbols mod 12; multiple reference signals in the third reference signal are mapped to the following time-frequency positions: subcarrier A+B, subcarrier A+4+B, subcarrier ( A+8+B) mod12; multiple reference signals in the fourth reference signal are ...

Embodiment 8

[0065] Optional embodiment 8, the multi-channel reference signal is 8 channels, mapping the 8-channel reference signal to 2 OFDM symbols of the physical resource block, and mapping each channel of reference signal to M subcarriers on the OFDM symbol specifically includes: Multiple reference signals in the first path of reference signals are mapped to subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12 of the first OFDM symbol of two OFDM symbols; the second path of reference Multiple reference signals in the signal are mapped to subcarrier A+2, subcarrier A+6, and subcarrier (A+10) mod 12 of the second OFDM symbol of the two OFDM symbols; Multiple reference signals are mapped to subcarrier A+1, subcarrier A+5, and subcarrier (A+9) mod12 of the first OFDM symbol of two OFDM symbols; the multiple reference signals in the fourth path reference signal Map the second OFDM symbol of the two OFDM symbols to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12; map multiple refe...

example 1

[0082] This example describes the mapping of physical resource blocks for transmitting layer-1 reference signals in a subframe.

[0083] Figure 5a is a schematic diagram of the position of the reference signal in the physical resource block when the subframe adopts a conventional cyclic prefix, as shown in Figure 5a As shown, the reference signal #0 of layer 1 is included, and the physical resource block includes 12 subcarriers in the frequency domain and 14 OFDM symbols in the time domain, and A=0.

[0084] Map the reference signal #0 of layer 1 to the following time-frequency positions of the above physical resource block: subcarrier #0, subcarrier #4, subcarrier #8 of the fourth OFDM symbol, subcarrier # of the seventh OFDM symbol 2. Subcarrier #6, subcarrier #10, subcarrier #0, subcarrier #4, subcarrier #8 of the 10th OFDM symbol, subcarrier #2, subcarrier #6, subcarrier of the 13th OFDM symbol Carrier #10.

[0085] Figure 5b is a schematic diagram of the position o...

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Abstract

The invention provides a mapping method for reference signals and a physical resource block, which is used for mapping one-path or multi-path reference signals to the physical resource block of a long-term evolution system, wherein the physical resource block comprises 12 subcarriers on a frequency domain and comprises two continuous time slots with equal time domain lengths, and each path of reference signal comprises a plurality of reference signals. The method comprises the following steps: mapping the one-path or multi-path reference signals to N orthogonal frequency division multiplexing (OFDM) symbols of the physical resource block, wherein N is selected from one of 2, 3 and 4; and mapping each path of reference signals to M subcarriers on the OFDM symbols, wherein M is selected from one of 1, 2, 3 and 4. By defining the position of each reference signal in the physical resource block based on lamination, the method is comparatively simple to realize, improves the performance of an LTE system, is favorable for expanding to the design of the reference signals of high-order MIMO, and has good forward compatibility.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for mapping reference signals and physical resource blocks. Background technique [0002] The Long Term Evolution (LTE for short) system is an important plan of the third generation partnership organization. When the LTE system adopts the conventional cyclic prefix, one time slot contains 7 lengths of uplink / downlink symbols, and when the LTE system adopts the extended cyclic prefix, one time slot contains 6 lengths of uplink / downlink symbols. figure 1 is a schematic diagram of the structure of the physical resource block when the system bandwidth of the LTE system is 5MHz, such as figure 1 As shown, a resource element (ResourceElement, referred to as RE) is a subcarrier in an OFDM symbol, and a downlink resource block (Resource Block, referred to as RB) consists of 12 consecutive subcarriers and 7 consecutive (extended cycle The prefix is ​​composed of 6) OFDM symbol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04B7/26
Inventor 戴博孙云锋郁光辉杨勋
Owner ZTE CORP
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