—The IEEE 802.11 standard provides fast recovery from frame losses using a rapid link level positive acknowledgment scheme. However, the adoption of positive acknowledgment leads to inefficient frame transmission. To improve efficiency of the acknowledgments mechanism in IEEE 802.11, we propose a novel link layer protocol for wireless LANs. The proposed protocol is an adaptation of an ATM-based...

The transmission of multimedia data over networks has increased steadily over the past few years and this increase is projected to accelerate in the future. However, virtually all current products and research for multimedia traffic over networks have concentrated solely on transmission of multimedia applications to and from wired terminals. Excluding mobile terminals from multimedia applicatio...

In this paper, we propose a new, e cient, fast retransmission scheme for wireless LANs. Wireless LANs are becoming popular and providing an e cient protocol over a wireless link is important. In our experiments with 2.4 GHz WaveLAN, the poor TCP performance observed was attributed to frequent expiration of the retransmission timer. To avoid unnecessary expiration of the retransmission timer, we...

— Ad hoc networks formed without the aid of any established infrastructure are typically multi-hop networks. Location dependent contention and " hidden terminal " problem make priority scheduling in multi-hop networks significantly different from that in wireless LANs. Most of the prior work related to priority scheduling addresses issues in wireless LANs. In this paper, priority scheduling in ...

The availability and low cost of 802.11b wireless networking products have encouraged a rapid growth in deployments of wireless LANs. As the use of powerful portable computing devices (laptops, PDAs) with WLAN adapters becomes a common expectation, the ability of wireless LANs to cater for large numbers of users with high bandwidth requirements is an increasingly important design consideration....

The increasing amount of roaming Internet users in combination with the evolution of IP-based applications has created a strong demand for wide-area, broadband access to a number of IP multimedia services. Wireless LANs can complement the next-generation cellular networks, by offering a cost-efficient, wireless broadband data solution for hot spot areas. By combining the wide coverage of next-g...