@misc{GeerdesKarl, author = {Geerdes, Hans-Florian and Karl, Holger}, title = {The Potential of Relaying in Cellular Networks}, url = {http://nbn-resolving.de/urn:nbn:de:0297-zib-7641}, number = {03-42}, abstract = {Relaying is a protocol extension for cellular wireless computer networks; in order to utilize radio resources more efficiently, several hops are allowed within one cell. This paper investigates the principle potential of relaying by casting transmission scheduling as a mathematical optimization problem, namely, a linear program. We analyze the throughput gains showing that, irrespective of the concrete scheduling algorithm, performance gains of up to 30\\% on average for concrete example networks are achievable.}, language = {en} } @misc{Geerdes, author = {Geerdes, Hans-Florian}, title = {Assessing Capacity Improvements by Relaying in Cellular Networks}, url = {http://nbn-resolving.de/urn:nbn:de:0297-zib-7651}, number = {03-43}, abstract = {Relaying -- allowing multiple wireless hops -- is a protocol extension for cellular networks conceived to improve data throughput. Its benefits have only been quantified for small example networks. For assessing its general potential, we define a complex resource allocation\slash{}scheduling problem. Several mathematical models are presented for this problem; while a time-expanded MIP approach turns out intractable, a sophisticated column generation scheme leads to good computational results. We thereby show that for selected cases relaying can increase data throughput by 30\\% on the average.}, language = {en} }