Performance Guarantees of Cellular Networks with Hardcore Regulation and Scheduling

TL;DR

This paper investigates how hardcore spatial regulation and scheduling of base stations affect performance guarantees in cellular networks, providing bounds on interference and insights into optimal regulation and scheduling strategies.

Contribution

It introduces a framework combining hardcore spatial regulation with scheduling to analyze interference and performance guarantees in cellular networks.

Findings

Upper bound on total interference power under spatial regulation

Scheduling improves link-level rate guarantees in certain regimes

Insights into regulation and scheduling trade-offs for performance and power efficiency

Abstract

Providing performance guarantees is one of the critical objectives of recent and future communication networks, toward which regulations, i.e., constraints on key system parameters, have played an indispensable role. This is the case for large wireless communication networks, where spatial regulations (e.g., constraints on intercell distance) have recently been shown, through a spatial network calculus, to be essential for establishing provable wireless link-level guarantees. In this work, we focus on performance guarantees for the downlink of cellular networks where we impose a hardcore (spatial) regulation on base station (BS) locations and evaluate how BS scheduling (which controls which BSs can transmit at a given time) impacts performance. Hardcore regulation is the simplest form of spatial regulation that enforces a minimal distance between any pair of transmitters in the network. Within this framework of spatial network calculus, we first provide an upper bound on the power of total interference for a spatially regulated cellular network, and then, identify the regimes where scheduling BSs yields better link-level rate guarantees compared to scenarios where base stations are always active. The hexagonal cellular network is analyzed as a special case. The results offer insights into what spatial regulations are needed, when to choose scheduling, and how to potentially reduce the network power consumption to provide a certain target performance guarantee.