IEEE/ACM Transactions on Networking (TON)
Improving NFS Performance Over Wireless Links
IEEE Transactions on Computers - Special issue on mobile computing
An Update Algorithm for Replicated Signaling Databases in Wireless and Advanced Intelligent Networks
IEEE Transactions on Computers - Special issue on mobile computing
Broadcast protocols to support efficient retrieval from databases by mobile users
ACM Transactions on Database Systems (TODS)
Mobile Computing and Databases-A Survey
IEEE Transactions on Knowledge and Data Engineering
A Novel Channel-Adaptive Uplink Access Control Protocol for Nomadic Computing
ICPP '00 Proceedings of the Proceedings of the 2000 International Conference on Parallel Processing
A Design for File Access in a Mobile Environment
WMCSA '94 Proceedings of the 1994 First Workshop on Mobile Computing Systems and Applications
A Novel Channel-Adaptive Uplink Access Control Protocol for Nomadic Computing
ICPP '00 Proceedings of the Proceedings of the 2000 International Conference on Parallel Processing
| Hi-index | 0.00 |
We consider the uplink access control problem in a mobile computing system, which is based on a cellular phone network in that a user can use the mobile device to transmit voice or file data. This resource management problem is important because efficient solution to uplink access control is critical for supporting a large user population with a reasonable level of quality of service (QoS). While there are a number of recently proposed protocols for uplink access control, these protocols possess a common drawback in that they do not exploit well the burst error properties, which are inevitable in a wireless communication system. In this paper, we propose a novel TDMA-based uplink access protocol, which employs a channel state dependent allocation strategy. Our protocol is motivated by two observations: (1) when channel state is bad, the throughput is low due to large amount of FEC (forward error correction) or excessive ARQ (automatic repeated request) is needed; and (2) because of (1), much of the mobile device's energy is wasted. The proposed protocol works closely with the underlying physical layer in that through observing the channel state information (CSI) of each mobile user, the MAC protocol first segregates a set of users with good CSI from requests gathered in the request contention phase of an uplink frame. The protocol then judiciously allocates channel bandwidth to contending users based on their channel conditions. Simulation results indicate that the proposed protocol considerably outperforms five state-of-the-art protocols in terms of packet loss, delay, and throughput.