| Summary: | 碩士 === 國立中山大學 === 資訊工程學系研究所 === 103 === Base station deployment is critical for a cellular communication system because it
determines the system construction cost and service quality to users. Conventional 2G and
3G systems assume that base stations are identical in the sense that they have the
similar coverage range. For 4G systems, LTE introduces the concept of heterogeneous base
stations (also called eNBs), which can provide different sizes of coverage range.
Given the user distribution in a service area, the problem of deploying heterogeneous
eNBs is NP-hard. Therefore, we propose a four-stage eNB deployment strategy to
efficiently solve this problem. Our strategy first employs a geometric approach to
provide the basic coverage to the service area and then adjusts the cell range in order
to meet the power and bandwidth constraints on each eNB. Simulation results verify that
the proposed strategy can significantly save the system construction cost while balancing
the loads of deployed eNBs.
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