Abstract
Base station cooperation (BSC) has been identified as a key radio access technology for next-generation cellular networks such as LTE-Advanced. BSC impacts cell planning, which is the methodical selection of base station (BS) sites, and BS equipment configuration for cost-effective cellular networks. In this paper, the impact of BSC on cell plan parameters (coverage, traffic, handover, and cost), as well as additional cell planning steps required for BSC are discussed. Results show that BSC maximizes its gains over noncooperation (NC) in a network wherein interference from cooperating BSs is the main limitation. Locations exist where NC may produce higher throughputs, therefore dynamic or semistatic switching between BSC and NC, called fractional BSC, is recommended. Because of interference from noncooperating BSs, the gains of BSC over NC are upper bounded, and diminishes at greater intersite distances because of noise. This encourages smaller cell sizes, higher transmit powers, and dynamic clustering of cooperative BSs.
Highlights
Base station cooperation (BSC) is the dynamic coordination of cellular base stations (BSs), where BSs perform cooperative transmission (CT) to user equipments (UEs) in the downlink or cooperative reception (CR) in the uplink
Under the 3GPP technical specification [10], BSC is a category of coordinated multipoint transmission (CoMP), which is defined as the dynamic coordination among multiple geographically separated transmission points
To estimate the performance of a BSC network, the spectral efficiency of a UE was estimated based on the received signal strength ratios of the local BS, cooperative BSs, and uncooperative BSs
Summary
Base station cooperation (BSC) is the dynamic coordination of cellular base stations (BSs), where BSs perform cooperative transmission (CT) to user equipments (UEs) in the downlink or cooperative reception (CR) in the uplink. In cell planning of non-cooperative transmission, coverage is determined based on the area at which the required Eb/No to support a target service is met. This Eb/No is derived directly from the SINR experienced at the demodulation-decoding block of the receiver, where the interference power is taken from the sum of the in-cell interference and the total receive power from all other cells.
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