A distributed, load-aware, power and frequency bargaining protocol for LTE-based networks
2012 (English)In: 2012 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), Piscataway, NJ, USA: IEEE , 2012, 6525-6529 p.Conference paper (Refereed)
A distributed, load-aware, joint power and frequency allocation protocol is introduced for LTE-based cellular networks, and system-level simulations are performed. Our proposed scheme aims to cooperatively limit the impact of Fractional Frequency Reuse (FFR) on the center users throughput compared to the Reuse 1 scheme, while providing sufficient throughput for the edge users. This is achieved through an asynchronous, lightweight scheme of local message exchange between neighboring LTE eNodeBs. The proposed scheme facilitates a type of "bargain" where an overloaded sector requests permission to utilize its neighbors edge bands for its center users at a limited set of transmit power levels. Grants are generated at each neighbor by solving a small-scale optimization problem. Using an LTE simulator we evaluate our scheme on a network with 21 sectors of varying load patterns. The proposed schemes performance for center users is consistently improved with respect to FFR-3, while for edge users the performance degradation is controlled by a parameter we set in the optimization problems definitions; compared to Reuse 1 edge users still have gains. Specifically, we observed up to a 46% gain in the sectors center throughput with a cost below 9% at the edges when compared to the classic FFR scheme, while the overall system throughput goes up by up to 26% in heavily loaded scenarios.
Place, publisher, year, edition, pages
Piscataway, NJ, USA: IEEE , 2012. 6525-6529 p.
, IEEE International Conference on Communications, ISSN 1550-3607
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-96554DOI: 10.1109/ICC.2012.6364818ISI: 000312855706156ISBN: 978-1-4577-2052-9 (print)ISBN: 978-1-4577-2051-2 (e-ISBN)OAI: oai:DiVA.org:liu-96554DiVA: diva2:642259
IEEE International Conference on Communications (ICC), Ottawa, ON, Canada, 10-15 June 2012