A. Nasipuri and S. R. Das. Multichannel CSMA with Signal Power-Based Channel Selection for Multihop Wireless Networks. In IEEE Vehicular Technology Conference (VTC) 2000.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....hosts located in other directions can communicate concurrently without interfering each other. These two approaches improve the throughput by increasing spatial reuse, but still they use only a single channel. The approach in this paper, is to achieve improved performance using multiple channels [6], 7] 8] 9] 10] Data transmitted in different channels do not interfere with each other, thus can take place in the same region simultaneously. So the throughput can increase significantly, proportional to number of channels in ideal case. Although not studied in this paper, having multiple ....

....If there are N channels, the protocol assumes that each host can listen to all N channels concurrently. A host wanting to transmit a packet searches for an idle channel and transmits on that idle channel. Among the idle channels, one that was used for last successful transmission is preferred. In [6] the protocol is extended to select the best channel based on signal power observed at the sender side. Wu et al. 9] propose a protocol that assigns channels dynamically, in an on demand style. In this protocol, called Dynamic Channel Assignment (DCA) they maintain one dedicated channel for ....

A. Nasipuri and S. R. Das, "Multichannel CSMA with Signal Power-based Channel Selection for Multihop Wireless Networks," in IEEE Vehicular Technology Conference (VTC), September 2000.

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A. Nasipuri and S. R. Das. Multichannel CSMA with signal power-based channel selection for multihop wireless networks. Proc. of IEEE Fall Vehicular Technology Conference (VTC 2000.

....However, the difference between cases with 10 and 20 bandwidth alloted to the control channel is very small. Hence, for our simulations we have fixed the # # to be 10 of the total bandwidth # . 4. 4 Optimum Number of Channels Our earlier experience with various multichannel MAC protocols [9, 8] has indicated that with an increasing num 0 2 4 6 8 10 6 8 10 12 14 16 18 20 Throughput (Mb s) Control Channel Bandwidth Fraction ( N=1 RBCS N=2 RBCS N=4 RBCS N=6 RBCS Figure 5: Variation of the peak throughput of an ad hoc network with 100 nodes with different percentage ....

....channel selection methods in wireless random access was previously presented by Nasipuri et al. in [9] where a soft channel reservation protocol was studied. The protocol gave preference to the channel that was used for the last successful transmission. In a more recent work, Nasipuri and Das [8] extended the idea of multichannel CSMA by using interference power measurements on various channels on the sender side as the selection criteria. In both the papers, the authors have evaluated the multichannel MAC over the basic CSMA protocol for only static networks. RTS CTS handshaking was ....

A. Nasipuri and S. R. Das. Multichannel CSMA with signal power-based channel selection for multihop wireless networks. Proc. of IEEE Fall Vehicular Technology Conference (VTC 2000), Sept. 2000.

....hidden terminal effect, but since these packets are short, the scheme benefits from avoiding the loss of the larger data packets. The RTS CTS exchange does not solve the exposed terminal problem. It also suffers from other ill, especially under heavy traffic loads and or highly mobile scenarios [13]. We focus on the importance of reducing the interference as a key factor that can improve the performance of a MAC protocol for ad hoc networks. This motivates the use of directional antennas and the development of appropriate protocols for using them. 3 DIRECTIONAL ANTENNAS IN AD HOC NETWORKS ....

Asis Nasipuri and Samir R. Das, "Multichannel CSMA with signal power-based channel selection for multihop wireless networks" (to appear), Proc. IEEE Fall Vehicular Technology Conference, Sept. 2000.

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A. Nasipuri and S. R. Das. Multichannel CSMA with Signal Power-Based Channel Selection for Multihop Wireless Networks. In IEEE Vehicular Technology Conference (VTC) 2000.

No context found.

A. Nasipuri and S. R. Das. Multichannel CSMA with Signal Power-Based Channel Selection for Multihop Wireless Networks. In IEEE Vehicular Technology Conference (VTC) 2000.

No context found.

A. Nasipuri and S. R. Das, "Multichannel CSMA with Signal PowerBased Channel Selection for Multihop Wireless Networks," in IEEE Vehicular Technology Conference (VTC), September 2000.

No context found.

Asis Nasipuri, and Samir R. Das, Multichannel CSMA with Signal Power-Based Channel Selection for Multihop Wireless Networks, Proceedings of the IEEE Fall Vehicular Technology Conference (VTC 2000.

No context found.

A. Nasipuri and S. R. Das, "Multichannel CSMA with Signal PowerBased Channel Selection for Multihop Wireless Networks," in IEEE Vehicular Technology Conference (VTC), September 2000.

No context found.

A. Nasipuri and S. R. Das. Multichannel CSMA with signal power-based channel selection for multihop wireless networks. In Proceedings of IEEE VTC, pages 211--218, Boston, MA, Sept. 2000.

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