TY - JOUR
T1 - Carrier Load Balancing and Packet Scheduling for Multi-Carrier Systems
AU - Wang, Yuanye
AU - Pedersen, Klaus
AU - Sørensen, Troels Bundgaard
AU - Mogensen, Preben
PY - 2010/5
Y1 - 2010/5
N2 - Abstract-In this paper we focus on resource allocation for next generation wireless communication systems with aggregation of multiple Component Carriers (CCs), i.e., how to assign the CCs to each user, and how to multiplex multiple users in each CC. We first investigate two carrier load balancing methods for allocating the CCs to the users- Round Robin (RR) and Mobile Hashing (MH) balancing by means of a simple theoretical formulation, as well as system level simulations. At Layer-2 we propose a simple cross-CC packet scheduling algorithm that improves the coverage performance and the resource allocation fairness among users, as compared to independent scheduling per CC. The Long Term Evolution (LTE)-Advanced is selected for the case study of a multi-carrier system. In such a system, RR provides better performance than MH balancing, and the proposed simple scheduling algorithm is shown to be effective in providing up to 90% coverage gain with no loss of the overall cell throughput, as compared to independent scheduling per CC.
AB - Abstract-In this paper we focus on resource allocation for next generation wireless communication systems with aggregation of multiple Component Carriers (CCs), i.e., how to assign the CCs to each user, and how to multiplex multiple users in each CC. We first investigate two carrier load balancing methods for allocating the CCs to the users- Round Robin (RR) and Mobile Hashing (MH) balancing by means of a simple theoretical formulation, as well as system level simulations. At Layer-2 we propose a simple cross-CC packet scheduling algorithm that improves the coverage performance and the resource allocation fairness among users, as compared to independent scheduling per CC. The Long Term Evolution (LTE)-Advanced is selected for the case study of a multi-carrier system. In such a system, RR provides better performance than MH balancing, and the proposed simple scheduling algorithm is shown to be effective in providing up to 90% coverage gain with no loss of the overall cell throughput, as compared to independent scheduling per CC.
KW - carrier aggregation
KW - packet scheduling
KW - load balancing
KW - backwards compatible
KW - LTE-Advanced
U2 - 10.1109/TWC.2010.05.091310
DO - 10.1109/TWC.2010.05.091310
M3 - Journal article
SN - 1536-1284
VL - 9
SP - 1780
EP - 1789
JO - IEEE Wireless Communications
JF - IEEE Wireless Communications
IS - 5
ER -