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Multi-carrier-based method for mapping resource

A resource mapping and multi-carrier technology, applied in the field of multi-carrier-based resource mapping, can solve problems such as not being able to meet needs

Inactive Publication Date: 2010-06-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the resource mapping process of wireless communication systems based on TDMA and CDMA technology, which uses time slots or codewords as resource units, can no longer meet the needs of wireless communication systems based on OFDMA technology. In order to ensure the spectrum efficiency of OFDMA systems, it is necessary to design a A Radio Resource Mapping Mechanism Suitable for OFDMA Systems

Method used

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  • Multi-carrier-based method for mapping resource

Examples

Experimental program
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Effect test

Embodiment 1

[0041] In this embodiment, a resource mapping method is provided. Figure 4 A schematic diagram of the implementation process of the method is given, such as Figure 4 As shown, it can be roughly achieved by the following operations:

[0042] Step 402, perform a first permutation operation on the n physical resource units included in the available subcarriers in units of n1 physical resource units; taking the first permutation operation using uniform extraction permutation as an example, when performing the permutation operation, will be The n1 physical resource units are used as a unit to extract physical resource units from the n physical resource units at equal intervals.

[0043] Step 404: Map the n physical resource units after the first permutation operation to multiple frequency partitions according to the frequency partition configuration information, specifically, the frequency partition configuration information here is the number of frequency partitions and the phy...

example 1

[0048] In this example, the frequency partition configuration information is as follows: (1) divide the subframe into 3 frequency partitions, that is, the number of frequency partitions is 3, (2) frequency partition 1 includes a centralized resource group and a distributed resource group The centralized resource group and the distributed resource group respectively contain 4 physical resource units; frequency partition 2 includes a centralized resource group and a distributed resource group, wherein the centralized resource group contains 10 physical resource units, and the distributed The centralized resource group contains 2 physical resource units; the frequency partition 3 only includes a centralized resource group, and the centralized resource group contains 4 physical resource units; (3) the centralized resource groups in frequency partition 2 and frequency partition 3 are both It is required to contain 4 consecutive physical resource units.

[0049] Figure 5 The resou...

example 2

[0057] In this example, the frequency partition configuration information is as follows: (1) divide the subframe into 3 frequency partitions, that is, the number of frequency partitions is 3; (2) frequency partitions 1, 2, and 3 respectively include a centralized resource group and A distributed resource group, the centralized resource group and the distributed resource group respectively contain 8 physical resource units; (3) The centralized resource groups in frequency partitions 1, 2, and 3 are required to contain 4 consecutive physical resource units .

[0058] Image 6 The resource mapping process of the 10MHz wireless communication system in the embodiment of the present invention is described. In combination with the above-mentioned frequency partition configuration information, the Image 6 The process shown is described. Among them, the number of FFT points of the 10MHz system is 1024, and the number of available subcarriers in the subframe is 864, which is divided ...

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Abstract

The invention discloses a multi-carrier-based method for mapping a frequency resource. In a mapping method, an available subcarrier is divided into n physical resource units, and a first displacement operation is carried out on the n physical resource units, wherein the first displacement operation takes n1 physical resource units as a unit; the n physical resource units after the first displacement operation are mapped into a plurality of frequency partitions according to frequency partition configuration information; a second displacement operation is carried out on part of or total physical resource units in each frequency partition, wherein the second displacement operation takes n2 physical resource units as a unit; the physical resource units after the second displacement operation are mapped into logic resource units; and n, n1 n2 are integers more than or equal to 1, and n is more than or equal to n1 and n2. The method can ensure the spectrum efficiency of a multi-carrier technology-based wireless communication system.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a multi-carrier-based resource mapping method. Background technique [0002] In a wireless communication system, a base station refers to a device that provides services for a terminal, and communicates with the terminal through an uplink / downlink, wherein the downlink refers to the direction from the base station to the terminal, and the uplink refers to the direction from the terminal to the base station. As far as data transmission is concerned, multiple terminals can simultaneously send data to the base station through the uplink, and can also receive data from the base station through the downlink at the same time. In a wireless communication system that uses a base station to implement wireless resource scheduling control, the scheduling and allocation of system wireless resources is completed by the base station. For example, the base station provides downlin...

Claims

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Application Information

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IPC IPC(8): H04W72/12
Inventor 关艳峰刘向宇鲁照华刘颖方惠英
Owner ZTE CORP
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