Multi-service multi-antenna broadcast channel scheduling method based on fuzzy satisfactory degree

Abstract

The invention discloses a multiservice and multiaerial broadcast channel scheduling method based on an indistinct satisfaction degree factor, which is characterized in that the influence of the variation tendency of the time delay and the speed of different services to the satisfaction degree and the schedule of a user is considered, the user is scheduled by maximizing the channel quality using the indistinct satisfaction degree as the weighing, thereby the influence of the lag error to the schedule is avoided. The invention can better measure the satisfaction degree of the user and avoid the lag error. The simulation result indicates that compared with other scheduling methods based on the measure criteria of the satisfaction degree, the scheduling method of the invention more reasonably considers the satisfaction degree of the user under different time delays and speeds and the variation tendency thereof, better utilizes the frequency spectrum resources, ensures the justification of the user under the premise that the throughput rate is not lowered, more effectively ensures the service quality demands of the user, and maximizes the satisfaction degree of the system.

Description

technical field [0001] The invention belongs to the technical field of multiple-input multiple-output (MIMO) mobile communication, and in particular relates to a multi-service multi-antenna scheduling method in a downlink multiple-input multiple-output communication system. Background technique [0002] Wireless communication is developing in the direction of broadbandization, business diversification, and increase in the number of users. Due to the scarcity of wireless network resources, the interference of wireless channels, and delays, there are many challenges in ensuring the quality of service provided in a wireless environment. Multi-user scheduling is one of the key technologies to support quality of service (QoS) guarantee for mixed services in wireless networks. [0003] "International Institute of Electronics and Electrical Engineers International Conference on Communication" (IEEE International Conference on Communication 2008, Volume.1, pp.542-546, 2005) propose...

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Problems solved by technology

For services with different quality of service requirements, the same bandwidth obtained through scheduling may correspond to different degrees of satisfaction

[0005] "International Institute of Electronics and Electrical Engineers Wireless Communications Journal" (IEEE Transactions on Wireless Communications, Volume.6, Issue 2, pp.423-428, Feb.2007) defines the user satisfaction factor, "International Institute of Electronics and Electrical Engineers International Communications Conference" (IEEE International Conference on Communication2008, pp.4250-4254, May 2008) defines the service satisfaction factor, and schedules users based on the satisfaction factor, but this method uses the channel state information at the current moment to schedule the next moment users will introduce lag error

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