Virtual clock: a new traffic control algorithm for packet switching networks
SIGCOMM '90 Proceedings of the ACM symposium on Communications architectures & protocols
IEEE/ACM Transactions on Networking (TON)
Adapting packet fair queueing algorithms to wireless networks
MobiCom '98 Proceedings of the 4th annual ACM/IEEE international conference on Mobile computing and networking
Fair scheduling in wireless packet networks
IEEE/ACM Transactions on Networking (TON)
Wcdma for Umts
Packet Scheduling with QoS Differentiation
Wireless Personal Communications: An International Journal
Code Placement and Replacement Strategies for Wideband CDMA OVSF Code Tree Management
IEEE Transactions on Mobile Computing
The Havana Framework for Supporting Application and Channel Dependent QOS in Wireless Networks
ICNP '99 Proceedings of the Seventh Annual International Conference on Network Protocols
Dynamic bandwidth allocation with fair scheduling for WCDMA systems
IEEE Wireless Communications
Wideband DS-CDMA for next-generation mobile communications systems
IEEE Communications Magazine
Dynamic assignment of orthogonal variable-spreading-factor codes in W-CDMA
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Supporting rate guarantee and fair access for bursty data traffic in W-CDMA
IEEE Journal on Selected Areas in Communications
Assignment and reassignment schemes for OVSF codes in WCDMA
Proceedings of the 2006 international conference on Wireless communications and mobile computing
OVSF code assignment strategies with minimal fragmentations for WCDMA systems
Computer Networks: The International Journal of Computer and Telecommunications Networking
An adaptive load balance allocation strategy for small antenna based wireless networks
WSEAS TRANSACTIONS on COMMUNICATIONS
A fair multi code OVSF design for 3G and beyond wireless networks
SoftCOM'09 Proceedings of the 17th international conference on Software, Telecommunications and Computer Networks
Fair Single Code and Multi Code Designs for 3G and Beyond CDMA Systems
Wireless Personal Communications: An International Journal
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Packet scheduling in a WCDMA system poses a new challenge due to its nature of variable bit rates and location-dependent, time-varying channel conditions. In this work, three new downlink scheduling algorithms for a WCDMA base station are proposed to support multimedia transmissions. Using a credit management and a compensation mechanism, our algorithms provide rate guarantee and fair access to mobile terminals. In particular, we propose to allow a user to simultaneously use multiple OVSF codes in a time-sharing manner, which we call a multicode, shared model. Using multiple codes allows us to compensate those users suffering from bad communication quality or even errors. The proposed schemes can tolerate a multistate link condition (compared to the typically assumed two-state, or good-or-bad, link condition) by adjusting the number of OVSF codes and the spreading factor of each code. Simulation results show that the proposed schemes do achieve higher bandwidth utilization while keeping transmission delay low.