Carrier-aggregation-based method for scheduling upstream cross-layer resources in LTE-Advanced system

Abstract

The invention discloses a carrier-aggregation-based method for scheduling upstream cross-layer resources in an LTE-Advanced system, wherein the QoS (quality of service) information of a user is obtained by an upstream scheduler by adopting the method of reporting quantized QoS under the condition of not bringing additional signaling expenditure and increasing the system complexity. Meanwhile, the selection of CC (component carrier) is carried out by adopting the method of class proportional fair of taking account of both efficiency and fairness on an RRC (radio resource control) layer of eNB, then the scheduling is divided into time domain scheduling and frequency domain scheduling, wherein the time domain scheduling is used for calculating the optimization of a user to be scheduled by sensing the QoS and the queue status information, and the distribution of the radio resources are carried out in the frequency domain scheduling by sensing the channel information, and finally the optimization of the distribution of the radio resources is realized. While the system performance is improved, the fairness of the distribution of the resources is guaranteed, and the requirement of the minimum QoS of the user is met.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to an uplink cross-layer resource scheduling mechanism in wireless resource management of an LTE-Advanced system, in particular to an uplink cross-layer resource scheduling method in a carrier aggregation-based LTE-Advanced system. Background technique [0002] In wireless communication systems, the shortage of spectrum resources has always been a bottleneck problem affecting system performance improvement. For a long time, there are two main aspects to solve this problem: one is to increase the bandwidth of the system as much as possible to meet the needs of these high-bandwidth services such as multimedia; the other is to continuously optimize the wireless resource scheduling mechanism of the system to In a reasonable way, resources are allocated on the basis of ensuring business QoS (Quality of Service) requirements to maximize system performance. [0003] LTE-Advanced (Long ...

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Problems solved by technology

[0015] The above two methods have the following disadvantages: a. The first method has the highest spectrum efficiency, but as the number of CCs increases, the scheduling complexity will become very high; b. The second method is simple to schedule, but the spectrum efficiency is not High; c. These two methods are based on continuous carrier aggregation, but in order to ensure cell coverage and good system performance, it is necessary to aggregate component carriers located in different frequency bands

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