Scheduling method applied to heterogeneous network enhancement mode interference coordination and optimization method thereof

A scheduling method and interference coordination technology, applied in network traffic/resource management, advanced technology, electrical components, etc., can solve problems such as unguaranteed and low speed, and achieve the effect of capacity and load balancing optimization

Inactive Publication Date: 2016-02-10
重庆信科设计有限公司
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Problems solved by technology

Generally, the signal-to-noise ratio (SNR) obtained by the user at the approximate blank subframe time is much higher than that obtained at the normal subframe time, and the edge users in the central area are only scheduled on the normal subframe. The signal-to-noise ratio is very small, and the rate obtained by users at the edge of the central area is very low, especially proportional

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  • Scheduling method applied to heterogeneous network enhancement mode interference coordination and optimization method thereof
  • Scheduling method applied to heterogeneous network enhancement mode interference coordination and optimization method thereof
  • Scheduling method applied to heterogeneous network enhancement mode interference coordination and optimization method thereof

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[0092] Example 1

[0093] Assuming that there are M users in a cell, and the scheduler is considered to have an infinite cache, during downlink scheduling, the packet scheduler will select a user within a short time interval and allocate resources to it. The basic execution process is as follows:

[0094] 1. At normal subframe time, the η-ECPF scheduling algorithm is a proportional fairness algorithm, and the priority of scheduling users is as follows,

[0095]

[0096] 2. In the approximate blank subframe period, while retaining the proportional fair scheduling algorithm, the expansion factor of the user is introduced To improve the proportional fair scheduling algorithm. definition and the obtained optimal scheduling user priority,

[0097]

[0098]

[0099] 3. Combining area expansion and η-ECPF scheduling algorithm to realize cell load balancing and capacity optimization. The process is as follows:

[0100] (1) The network will analyze the load difference b...

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Abstract

The invention discloses a scheduling method applied to heterogeneous network enhancement mode interference coordination and an optimization method thereof. The scheduling method comprises the steps of adjusting an area expansion and throughput target of a micro-base station through a [eta] parameter; and introducing an expansion factor [zeta]m,tn of a user to improve a proportional fairness scheduling algorithm during an approximate blank sub-frame period. Therefore, the proportional fairness scheduling algorithm in which the area expansion and throughput target of the micro-base station is adjusted through the [eta] parameter is proposed; a problem of distinguishing a central trap, which the proportional fairness scheduling algorithm faces, can be avoided through the improved proportional fairness scheduling algorithm; and a capacity and load balance optimization method is provided based on the algorithm. The result shows that the algorithm can increase resource utilization rate of base stations and can realize load balance among the base stations.

Description

technical field [0001] The invention relates to the field of wireless mobile communication, in particular to a scheduling method and an optimization method applied in heterogeneous network enhanced interference coordination. Background technique [0002] The traditional ICIC (Intercell Interference Coordination, interference coordination) scheme can no longer solve the interference in the LTE-A heterogeneous network interference scenario, so Rel-10 mainly coordinates the interference between the macro base station and the low-power node in the heterogeneous network, and proposes Enhanced inter-cell interference coordination. Enhanced interference coordination focuses on two techniques of cell area expansion and approximate blank subframe. The expansion of the cell area expands the coverage of the PeNB (PicoeNodeB, micro base station), offloads the users of the macro base station to the Pico node, and balances the load of the system; and the approximate blank subframe does n...

Claims

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Application Information

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IPC IPC(8): H04W28/08H04W72/12
CPCH04W28/08H04W72/54H04W72/566Y02D30/70
Inventor 文武刘敏廖新平李雯静卢彦博
Owner 重庆信科设计有限公司
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