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

A technology of carrier aggregation and resource scheduling, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as low spectrum efficiency and high scheduling complexity, and achieve improved system performance, fairness, and optimization The effect of distribution

Inactive Publication Date: 2012-07-25
XI AN JIAOTONG UNIV
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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

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

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Embodiment Construction

[0048] The uplink cross-layer resource scheduling method in the LTE-Advanced system provided by the present invention is in the radio access network E-UTRAN (Evolution-Universal Terrestrial Radio Access Network) of the LTE-Advanced system, without additional signaling overhead And without increasing the complexity of the system, the uplink scheduler is informed of the user's QoS information by quantifying the QoS reporting method. At the same time, at the RRC (Radio Resource Control) layer of the eNB, the method of SPF: Similar Proportional Fairness (SPF: Similar Proportional Fairness) that takes into account both efficiency and fairness is used to select the component carrier CC, and then the scheduling is divided into time domain scheduling and frequency domain scheduling at the MAC layer. Domain scheduling, in which the priority of users to be scheduled is calculated based on perceived QoS and queue status information in time domain scheduling, wireless resource allocation i...

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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 ...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04W72/12
Inventor 曲桦赵继红李慧
Owner XI AN JIAOTONG UNIV
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