Journal
IEEE WIRELESS COMMUNICATIONS LETTERS
Volume 3, Issue 1, Pages 42-45Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/WCL.2013.110713.130709
Keywords
Heterogeneous cellular networks; cell selection; load balancing; shadowing; downlink rate distribution
Categories
Funding
- NSF [CIF-1016649]
- Direct For Computer & Info Scie & Enginr
- Division of Computing and Communication Foundations [1016649] Funding Source: National Science Foundation
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Considering both small-scale fading and long-term shadowing, we characterize the downlink rate distribution at a typical user equipment (UE) in a heterogeneous cellular network (HetNet), where shadowing, following any general distribution, impacts cell selection while fading does not. Most prior work either ignores the impact of channel randomness on cell selection or lumps all the sources of randomness into a single variable, with cell selection based on the instantaneous signal strength, which is unrealistic. As an application of the results, we study the impact of shadowing on load balancing in terms of the optimal per-tier selection bias needed for rate maximization.
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