To optimize the network utility in 3GPP Long Term Evolution-Advanced (LTE-A) heterogeneous networks (HetNets), it is necessary to jointly consider inter-cell interference mitigation and user attachment. Based on potential game formulation, we optimize almost blank subframe (ABS) and/or cell selection bias (CSB) settings for both macrocells and picocells in a distributed manner. We demonstrate the need of joint ABS and CSB optimization via simulation case studies. Extensive simulations confirm that joint ABS and CSB optimizations can lead to a 20% improvement in spectral efficiency and a 46% improvement in energy efficiency while increasing the fairness of the achieved rates of users.
|Title of host publication||13th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)|
|Number of pages||8|
|Publication status||Published - 9 Jul 2015|
|Event||13th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks - Mumbai, India|
Duration: 25 May 2015 → 28 May 2015
|Conference||13th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks|
|Abbreviated title||WiOpt 2015|
|Period||25/05/15 → 28/05/15|
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- Macrocell networks
- Resource management
Liu, Y., Chen, C. S., & Sung, C. W. (2015). Joint optimization on inter-cell interference management and user attachment in LTE-A HetNets. In 13th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) (pp. 62-69). IEEE. https://doi.org/10.1109/WIOPT.2015.7151054