Resource allocation method for downlink transmission in a multicarrier-based CDMA communication system

A technology of resource allocation and communication system, applied in the field of wireless communication system, can solve the problem of providing detailed and effective implementation methods without management of wireless resources, etc.

Inactive Publication Date: 2006-01-11
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these techniques have physical layer advantages by applying CDMA in the channel, these techniques do not provide detailed and efficient implementation methods for the management of radio resources

Method used

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  • Resource allocation method for downlink transmission in a multicarrier-based CDMA communication system
  • Resource allocation method for downlink transmission in a multicarrier-based CDMA communication system
  • Resource allocation method for downlink transmission in a multicarrier-based CDMA communication system

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Embodiment Construction

[0031] Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0032] FIG. 1 is a block diagram showing an Orthogonal Frequency Division Multiplexing Code Division Multiple Access (OFDM-CDMA) system to which a resource allocation method according to a preferred embodiment of the present invention is applied.

[0033] As shown in Figure 1, the OFDM-CDMA system includes: a transmitter comprising a serial / parallel (S / P) converter 11, an expander 12, an adder 13, an OFDM modulating unit 15; and comprising an OFDM demodulating unit 17 and a parallel / serial converter 19 receiver. Each S / P converter 11 performs serial / parallel conversion of each user's input information. Each spreader 12 multiplies each S / P converted signal output from the S / P converter 11 by a spreading code corresponding to the user. Each adder 13 adds the spread signals of different users output from the spreader 12 . The OFDM modulation un...

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Abstract

In a resource allocation method in a multicarrier-based mobile communication system that includes base stations and supports multiple access of a plurality of terminals identified using codes, the service area of each base station is divided into at least two virtual cells having different radii about the base station, and resources are actively allocated to terminals located in the service area according to distribution of the terminals in the virtual cells. The service area is divided into two virtual cells based on received signal strengths of the terminals for a specific subchannel, and the specific subchannel is allocated to one terminal or at most two terminals according to distribution of the terminals in the virtual cells.

Description

[0001] priority [0002] This application claims priority to Application Serial No. 2004-53813, filed with the Korean Intellectual Property Office on July 10, 2004, and entitled "RESOURCE ALLOCATION METHOD FOR DOWNLINKTRANSMISSION IN MULTICARRIER-BASED CDMA COMMUNICATION SYSTEM," the entire contents of which are incorporated by reference merged here. technical field [0003] The present invention relates to a wireless communication system, and more particularly to a resource allocation method for downlink transmission in a multi-carrier-based Code Division Multiple Access (CDMA) communication system. Background technique [0004] With the increase in the use of personal mobile communication, the demand for high-speed data transmission and multiple access technology is rising, which has led to a surge in the development of industries based on mobile communication. To meet this need, new synthesis techniques for combining wireless digital modulation multiple access have recen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/36
CPCH04L5/0044H04L5/0021H04L5/006H04W72/0453
Inventor 金圣伦尹相普李炼雨朴元亨
Owner SAMSUNG ELECTRONICS CO LTD
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