Capacity and Stable Scheduling in Heterogeneous Wireless Networks

Stephen V. Hanly; Chunshan Liu; Phil Whiting

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arXiv · 1408.1764

Capacity and Stable Scheduling in Heterogeneous Wireless Networks

Stephen V. Hanly·Chunshan Liu·Phil Whiting

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Abstract

Heterogeneous wireless networks (HetNets) provide a means to increase network capacity by introducing small cells and adopting a layered architecture. HetNets allocate resources flexibly through time sharing and cell range expansion/contraction allowing a wide range of possible schedulers. In this paper we define the capacity of a HetNet down link in terms of the maximum number of downloads per second which can be achieved for a given offered traffic density. Given this definition we show that the capacity is determined via the solution to a continuous linear program (LP). If the solution is smaller than 1 then there is a scheduler such that the number of mobiles in the network has ergodic properties with finite mean waiting time. If the solution is greater than 1 then no such scheduler exists. The above results continue to hold if a more general class of schedulers is considered.

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Stephen V. Hanly, Chunshan Liu, Phil Whiting. 2014-08-08. Capacity and Stable Scheduling in Heterogeneous Wireless Networks. https://arxiv.org/abs/1408.1764

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