Method for providing quality of service in a multiuser orthogonal frequency division multiplex (OFDM) system

摘要

A method that provides quality of service in a multiuser orthogonal frequency division multiplex system. The method assures quality of service at application level, which directly affects user's satisfaction with the service for interactive applications, such as web browsing, and real-time applications. The method uses advanced dynamic resource allocation to achieve a common subjective user state and/or dynamic resource allocation to optimize the throughput of the system while increasing the quality of service at application level. The method takes advantages of the information of the instantaneous channel gain and information of the objective technical parameters of the system and applications. With the incorporation of the technical parameters of the system and applications into the subcarrier allocation, the method may provide quality of service at application level, allow explicit control of system resources, ensure fairness in resource allocation and achieve the optimal throughput of the multiuser orthogonal frequency division multiplex system.

主权项

1. A method for providing quality of service (QoS) in a multiuser orthogonal frequency division multiplex (OFDM) system using advanced dynamic subcarrier allocation to achieve a common subjective user state, comprising:
a) calculating the user's required capacities for different subjective user states; b) finding the user with the lowest previous subjective user state; c) allocating the subcarrier to the user with the lowest previous user state; d) updating the user's assigned capacity, the number of available subcarriers and the previous subjective user state; e) verifying the user's assigned capacity; f) eliminating the user from additional subcarrier allocation for the common subjective user state; g) continuing the method with the method that optimizes the throughput of the system and increases the quality of service at application level.