Multi-service mixed transmission implementing method in OFDM cooperation/relay system

Abstract

The invention provides a method for realizing multi-service hybrid transmission in orthogonal frequency division multiplexing OFDM synergy / relay system. The method comprises the following steps: firstly, the quality of an equivalent link is collectively estimated according to a mathematical model, then a corresponding feedback mechanism is adopted to obtain correlative parameters which are necessary for collectively estimating the quality of the link, and then on the basis of the link estimating method, aiming at the two different application scenes in the OFDM synergy / relay system: the point-to-point single user and the point-to-multipoint multiuser , and the respective methods for realizing the multi-service hybrid transmissions are put forwards. The method of the invention can effectively ensure the Qos demand of all services, improve the total throughput and the transmission speed of the system, and improve the total spectrum effectiveness and other systematical functions of the whole system. In addition, the operational procedure of the invention is simple and convenient, and is easy to implement, the whole operational process dispenses with highly complex search and cyclic iteration process, the complexities of the whole operational process are all linear complexities, and the demand of real-time data service transmission in future wireless communication can be completely met.

Description

technical field [0001] The invention relates to a method for realizing coordinated transmission in a wireless network, to be precise, a method for realizing multi-service mixed transmission in an OFDM cooperative / relay system, and belongs to the technical field of wireless communication. Background technique [0002] With the rapid development of wireless communication technology and the Internet, people's work and life are increasingly inseparable from Internet services. People hope to obtain high-speed and convenient Internet services at any place and any time. At the same time, the traditional wireless network architecture can no longer meet the application requirements of high-speed seamless coverage. Cooperative / Relay (Cooperative / Relay) technology is considered to be one of the key technologies of future wireless networks. At present, major standardization organizations at home and abroad, including the third-generation mobile communication project partner 3GPP, the I...

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Problems solved by technology

[0006] Therefore, facing future wireless communication, the issue of multi-service mixed transmission in OFDM cooperative / relay system has become a key issue: how to mix and transmit various services with different QoS in this system, which can effectively guarantee the quality of certain services. The minimum rate requirement, and at the same time, the overall throughput and capacity of the system can be improved as much as possible. This communication technology problem that needs to be solved urgently has become a focus of attention of scientific and technological personnel in the industry. However, no solution for this problem has been found so far. corresponding solution

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