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Re-Routing Instability In IEEE 802.11 Multi-Hop Ad-Hoc Networks
White Papers TCP throughput instability is a well-known phenomenon in IEEE 802.11 multi-hop ad-hoc networks. In particular, it shows that the throughput instability is mainly induced by re-routing, not the binary exponential back-off of the IEEE 802.11 MAC...
[January 1, 1970, 0:59]
Towards The Performance Analysis Of IEEE 802.11 In Multi-Hop Ad-Hoc
White Papers A two dimensional markov chain based mathematic model for one hop network IEEE 802.11 protocol was introduced by Bianchi to analytically derive the saturated throughput. IEEE standard protocol 802.11 is widely used in wireless ad-hoc network.
[January 1, 1970, 0:59]
Towards The Performance Analysis Of IEEE 802.11 In Multi-Hop Ad-Hoc Networks
White Papers The performance of IEEE 802.11 in multi-hop wireless networks depends on the characteristics of the protocol itself, and on those of the upper layer routing protocol. Little work has been done on the analysis of the performance of IEEE 802.11...
[January 1, 1970, 0:59]
SSCH: Slotted Seeded Channel Hopping For Capacity Improvement In IEEE 802.11 Ad-Hoc Wireless Networks
White Papers Simulation results show that SSCH significantly increases network capacity in several multi-hop and single-hop wireless networking scenarios. This paper presents a link-layer protocol called Slotted Seeded Channel Hopping, or SSCH, that increases...
[January 1, 1970, 0:59]
Enhancements Of The IEEE 802.11, A MAC Protocol For Ad Hoc Network With History Of Power Adjustment
White Papers The protocol also achieves better spatial reuse of the spectrum thanks to the power control taking into consideration the number of neighbors in the one-hop neighborhood and the history of power changes.
[January 1, 1970, 0:59]
WLAN Technologies For Mobile Ad Hoc Networks
White Papers The IEEE 802.11 standard is a good platform to implement a single-hop ad hoc network because of its extreme simplicity. Furthermore, multi-hop networks covering areas of several square kilometers could be built by exploiting the IEEE 802.11...
[January 1, 1970, 0:59]
Architecture And Algorithms For An IEEE 802.11-Based Multi-Channel Wireless Mesh Network
White Papers Even though multiple non-overlapped channels exist in the 2.4GHz and 5GHz spectrum, most IEEE 802.11-based multi-hop ad hoc networks today use only a single channel. As a result, these networks rarely can fully exploit the aggregate bandwidth...
[January 1, 1970, 0:59]
On-Demand Formation Of Bluetooth Scatternet
White Papers Contention based MAC protocols like IEEE 802.11 have been shown to perform badly in multi-hop wireless ad hoc networks. The Bluetooth scatternet structure, integrating polling scheme and FHSS in its MAC layer, provides a contention-free environment...
[January 1, 1970, 0:59]
Real-Time Multiplayer Game Support Using QoS Mechanisms In Mobile Ad Hoc Networks
White Papers This paper analyzes and evaluates, via simulations, common QoS extensions, like backup route or priority queuing, and proposes some new ones, such as real-time neighbor aware rate control policies or hop-constrained queuing timeouts, to ad hoc...
[January 1, 1970, 0:59]
Performance Of Wireless LANs Based On IEEE 802.11 MAC Protocols
White Papers IEEE 802.11 MAC protocol has been the standard for Wireless LANs, and also adopted in many network simulation packages for wireless multi-hop ad hoc networks. However, it is well known that, as the traffic goes up, the performance of IEEE 802.11...
[January 1, 1970, 0:59]
Experimental Investigations Into TCP Performance Over Wireless Multihop Networks
White Papers The results of an extensive experimental study of the performance of the TCP protocol over wireless multi-hop ad hoc networks are presented. The investigations are performed in a real indoor environment over a network of laptops equipped with off...
[January 1, 1970, 0:59]
Performance Issues With IEEE 802.11 In Ad Hoc Networking
White Papers Thus, studies in wireless multi-hop networks, also called ad hoc networks often rely on the use of the IEEE 802.11 standard for the physical and MAC layers. But, since a couple of years, the use of 802.11 in ad hoc networks has been discussed.
[January 1, 1970, 0:59]
Extension Of Basic Service Set By Multihop Routing In IEEE 802.11 Wireless LAN Standard
White Papers Multihop extension preserves the traditional single-hop networks where the service infrastructure is constructed by many access points but it also adds the flexibility of ad hoc networks where wireless transfer through mobile stations is allowed...
[January 1, 1970, 0:59]
On The Scalability Of IEEE 802.11 Ad Hoc Networks
White Papers Synchronization is necessary for frequency hopping spread spectrum (FHSS) to ensure that all stations "hop" at the same time; it is also necessary for both FHSS and direct sequence spread spectrum (DSSS) to perform power management.
[January 1, 1970, 0:59]
An Experimental Study Of VoIP Multicast In 802.11b Ad-Hoc Networks
White Papers This paper studies the behavior of VoIP traffic in such networks in multi-hop scenarios with and without hidden stations. This paper presents experimental studies on the use of IEEE 802.11b wireless Ad Hoc networks for Multicast.
[January 1, 1970, 0:59]
WIANI: Wireless Infrastructure And Ad-Hoc Network Integration
White Papers If ad hoc mode is adopted in both the AP and mobile nodes, the one hop connections from AP can be extended to multiple hops. In traditional IEEE 802.11 wireless LANs, all users directly connect to an Access Point (AP) and all packets are forwarded...
[January 1, 1970, 0:59]
A Distributed Transmission Power Control Protocol For Mobile Ad Hoc Networks
White Papers The solution emphasizes the interplay between the MAC and network layers, whereby the MAC layer indirectly influences the selection of the next hop by properly adjusting the power of route request packets.
[January 1, 1970, 0:59]
MACA-P: A MAC Protocol To Improve Parallelism In Multi-Hop Wireless Networks
White Papers Several studies have shown that multi-hop networks using IEEE 802.11 wireless LANs, based on a RTS/CTS MAC, exhibit significant throughput degradation. This paper presents the design of MACA-P, a RTS/CTS based MAC protocol that supports...
[January 1, 1970, 0:59]
Throughput Persistence Of Scalable Mobile Ad-Hoc Networks: Evaluation And Enhancement
White Papers Vehicles participating in the network can act as the source or the sink of the road condition and other types of information, or as nodes taking part in routing a message towards its destination in a multi-hop fashion.
[January 1, 1970, 0:59]
On Setting TCP's Congestion Window Limit In Mobile Ad Hoc Networks
White Papers The paper first shows and proves that, independent of the MAC layer protocol being used, the BDP of a path in MANET cannot exceed the Round-Trip Hop-Count (RTHC) of the path. It further refines this upper bound based on the IEEE 802.11 MAC layer...
[January 1, 1970, 0:59]
