| R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in vol. 3. Anchorage: IEEE, Apr. 2001. |
....These are typically contradicting factors. In [2] power control is adopted to reduce interference and improve throughput on the MAC layer. How to determine transmission power of each mobile host so as to determine the best network topology, or known as topology control, is addressed in [3] 4] [5]. How to increase network throughput by power adjustment for packet radio networks is addressed in [6] Power Aware Routing: Power aware routing protocols have been proposed based on various power cost functions [7] 8] 9] 10] 11] In [7] when a mobile host s battery level is below a ....
R. Wattenhofer, L. Li, P. Bahl, and Y. M. Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks, " IEEE INFOCOM, pp. 1388--1397, 2001.
....In Scheme 1 and Scheme 2, each mobile terminal also keeps a power history table as in PCMAC, and the table updating mechanism is also similar to that of PCMAC. We choose Scheme 1 and Scheme 2 as our references because they are adopted by many other power control algorithms [1] 2] 3] 4] 9] [10], which are designed for tackling the asymmetrical link problem. Same as the parameters used in [5] in our simulation we adopt ten transmission power levels: 1 mW, 2 mW, 3.45 mW, 4.8 mW, 7.25 mW, 10.6 mW, 15 mW, 36.6 mW, 75.8 mW, and 281.8 mW, which roughly correspond to the decoding range of 40 ....
R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks," Proc. INFOCOM'2001.
....battery resource that constrains the life of the network. Extensive research has been devoted to ad hoc sensor networks in this direction. Using power control to reduce interference and improve throughput is addressed in [4, 16] Topology control by tuning transmission powers is discussed in [3, 9, 14]. Power aware routing for ad hoc networks can be found in [1, 10, 11, 12] Both IEEE 802.11 and Bluetooth support low power modes [2, 15] How to design low power modes on 802.11based multi hop networks is addressed in [13] In this paper, we consider the topology control problem in an ad hoc ....
R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks. In IEEE INFOCOM, pages 1388--1397, 2001.
....to optimize performance. Ramanathan and Rosales Hain describe distributed algorithms that vary transmission power and attempt to maintain connectedness [19] Rodoplu and Meng give a distributed algorithm to produce minimum power routes by varying node transmission power [20] Wattenhofer et al. [25] describe a topology maintenance algorithm using similar underlying radio support, but their algorithm guarantees global connectedness using directional information. Span controls whether or not the receiver is powered on, rather than controlling the transmit power level. It also pays close ....
WATTENHOFER, R., LI, L., BAHL, P., AND WANG, Y.-M. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks. In Proceedings of IEEE INFOCOM (Anchorage, AK, 2001).
....graph version and a heuristic algorithm that is easy to distribute. Performance evaluation results are presented in Section 6. Finally in Section 7 we conclude. 2 Related work Minimizing the energy consumption of all wireless networks has received significant attention over the last few years [1, 24, 9, 14, 33, 15, 25, 12]. We were inspired by the exciting results related to the problem of minimum energy broadcasting in all wireless networks [26, 30, 5, 13, 19, 20] and in particular by the work of Wieselthier et al. 31, 32] In this work they introduce the node based multicast model for wireless networks upon ....
L. Li, V. Bahl, Y. Wang, and R. Wattenhofer. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks. In Proceedings of IEEE INFOCOM 2001.
....a much stronger connected network, it also performs in mean by 14 better than LMA. Moreover, the local algorithms are almost competitive with the global ones. IV. RELATED WORK In recent publications the problem of power control was addressed while assuming information on the angle of reception [8] or the nodes knowledge of its location [9] 10] In these publications more complicated algorithms than in this paper are used, but as they use additional information a comparison can only be made using the same metric. As there are similar approaches to solve the problem of power control as in ....
R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in vol. 3. Anchorage: IEEE, Apr. 2001.
....is not considered here. In this paper, the term strong connectivity is used to denote connectivity for . these algorithms are not scalable for large ad hoc networks where excessive amounts of information would need to be collected by a central entity. Distributed algorithms [4] 5] [6], on the other hand, are generally scalable and adaptive to mobility due to the fact that each node relies on local information collected from nearby nodes to autonomously compute its appropriate transmission power. Considering that the information each node obtains is limited, the major drawback ....
....to maintain multiple routing tables, one for each transmit power level. To select the optimum power level, the algorithm considers the smallest power level which results in a routing table with the same number of entries as the routing table obtained at the full transmit power. Finally, in [5] [6], a distributed topology control mechanism, termed Cone based Topology Control, is proposed where each node autonomously controls its transmission power so that at least one neighbor is found in any surrounding cone of a certain size. They show that is the upperbound cone size to ....
Roger Wattenhofer, Li Li, Paramvir Bahl, and Yi-Min Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks, " in Infocom 2001.
....from a collection of initially isolated devices. The well studied common power (CP) level model for constructing an ad hoc network[4] 5] assumes all devices transmit at the same power level. We introduce a an adaptive power (AP) level construction, which uses directional information, similar to [6]. This is an iterative scheme where each device sets its power individually and adaptively, using only local information. We directly compare the performance metrics of the CP and the AP schemes. For each instance, the AP construction has a more efficient topology (and hence a smaller value for # ....
....up over connected. They could operate at much lower power, be connected more sparsely, and yet still be connected to the entire remainder of the network. The sparser connectivity would also result in less interference between simultaneous transmissions. The adaptive power algorithm discussed in [6] is a distributed construction for locally setting power to be the minimum necessary at each node, while still ensuring full network connectivity. However, instead of optimizing with respect to power usage as in [6] we want to optimize the efficiency of the topology with respect to # , the ....
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R. Wattenhofer, L. Li, P. Bahl, and Y. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in Proceedings of IEEE INFOCOM, 2001.
....a target property (e.g. connectivity) of the resulting network topology is guar anteed, while the global energy consumption is reduced. A protocol that attempts to achieve this is called a topology control protocol. Several examples of topology control mechanisms have been recently introduced [1, 5, 10, 15, 16, 21, 23, 27]. In order to be easily implementable in a realistic scenario, a topology control protocol should be fully distributed, asynchronous, and localized (i.e. the computation at every node should be based on in formation concerning neighbor nodes only) These features in general ensure that the ....
....be implemented at a reasonable cost in many realistic scenarios. We have performed several simulations, which have shown that our protocol reduces energy consumption considerably with respect to the case where no topology control is used, and that it compares fa vorably with the CBTC protocol of [15, 27]. 2 Related work In [23] Rodoplu and Meng presented a distributed topology control algorithm that leverages on posi tion information (provided by low power GPS receivers) to build a topology that is proved to min imize the energy required to communicate with a given master node. ....
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R. Wattenhofer, L. Li, P. Bahl, Y. Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks", Proc. IEEE Infocorn 2001.
....shown demonstrative improvements on network capacity. There are two basic paradigms in power control for mobile ad hoc networks. In the first paradigm, all nodes have a common transmit range that is predetermined. In the second paradigm, each node adaptively adjusts its transmit power [15] 5] [13] based on some heuristics and local channel measurements. Since nodes can adjust and transmit just enough power to the intended destination as time evolves, these algorithms are potentially superior due to the reduced interference, increased frequency reuse and improved energy efficiency. However, ....
L. Li, V. Bahl, Y.M. Wang, and R. Wattenhofer. Distributed topology control for power efficient operation in multihop wireless ad hoc networks. In Proc. IEEE INFOCOM '01, April 2001.
....can take a more global approach based on topology or traffic characteristics. In this paper, we consider power management approaches that save energy by turning off the radios of nodes in the network. Other energy conservation mechanisms such as topology control and power controlled MAC protocols [8], 9] 10] are considered orthogonal and the benefits can be combined. Similar to ad hoc routing protocols, power management schemes range from proactive to reactive. The extreme of proactive can be defined as always on (i.e. all nodes are active all the time) and the extreme of reactive can be ....
R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in Proc. of IEEE INFOCOM, 2001.
....power so that its degree (number of one hop neighbors) is bounded. In [4] it is proposed to use transmit power control to optimize the average end to end network throughput by controlling the degree of a node. A distributed topology control algorithm using direction information is proposed in [5]. The second class of approaches could be called power aware routing. Most schemes use some shortest path algorithm with a power based metric, rather than a hop count based metric. Some suggestions for the metric in [6] include energy consumed per packet, time to network partition, variance in ....
R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in Proceedings of INFOCOM, 2001, pp. 1388--1397.
....a router. The result is a distributed multi hop network with a time varying topology. Ad hoc network nodes are typically portable and thus powered by limited capacity batteries. Not surprisingly, energy conservation in this type of environment is an area of active research. In [1] 9] 10] and [14], the problem of determining the optimal transmission radius for minimal interference and energy consumption is considered. In [11] 9] 2] 8] and [5] the problem of minimum energy routing is addressed. However, relatively little work has dealt with power consumption of nodes when they are ....
R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," Proc. IEEE INFOCOM, April 2001.
No context found.
R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks. In INFOCOM, 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks. In Proc. of the 20 Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM), 2001.
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P. Bahl R. Wattenhofer, L. Li and Y. Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks," in Proceedings of INFOCOM '01, 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks. In Proc. of the 20 Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM), 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks. In INFOCOM, 2001.
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R. Wattenhofer, P. Bahl L. Li, and Y. M. Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks," in Proceedings of INFOCOM, April 2001.
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R. Wattenhofer, L. Li, V. Bahl and Y. M. Wang. "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks," in Proc. IEEE INFOCOM, pages 1388-1397, April 2001.
No context found.
R. WATTENHOFER, L. LI, P. BAHL AND Y.M. WANG, Distributed topology control for power efficient operation in multihop wireless ad hoc networks, Proc. IEEE INFOCOM 2001.
....These are typically contradicting factors. In [2] power control is adopted to reduce interference and improve throughput on the MAC layer. How to determine transmission power of each mobile host so as to determine the best network topology, or known as topology control, is addressed in [3] 4] [5]. How to increase network throughput by power adjustment for packet radio networks is addressed in [6] Power Aware Routing: Power aware routing protocols have been proposed based on various power cost functions [7] 8] 9] 10] 11] In [7] when a mobile host s battery level is below a ....
R. Wattenhofer, L. Li, P. Bahl, and Y. M. Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks," IEEE INFOCOM, pp. 1388--1397, 2001.
....diversity, which increases per node throughput. In this work, we do not study the issue of delayed deliveries , i.e. increasing network capacity at the expense of end to end delay. The issue of topology control has been extensively addressed by previous work. As one example, Wattenhofer et al. [6] have proposed a fully distributed algorithm that only relies on directional information between nodes to decide the minimum transmission power required to ensure the connectivity of the network. However, the work does not consider other QoS parameters other than power efficiency and basic network ....
R. Wattenhofer, P. Bahl L. Li, and Y. M. Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks," in Proceedings of INFOCOM, April 2001.
....work, we do not consider network partitioning caused by changes in the node s transmission power. That is when the connectivity between network partitions relies on one or two bridging nodes; such connectivity can be restored using topology control either by adjusting the node s transmission power [4] or modifying the node s mobile trajectory [5] In comparison, a partitioned network caused by node movements, is strongly disconnected such that the partitions are separated by distance greater than the maximum transmission range. When the network partitions, those mobile users that are not in ....
R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks, " in Proceedings of IEEE INFOCOM, Anchorage, Alaska, April 2001.
....level. This requires that the algorithms need to be fully distributed to all nodes, rather than centralized to a small subset of nodes. Previous work on ad hoc networks has mainly focused on three aspects: general packet routing [2] 3] powerconserving routing and topology control, e.g. 4] [5]) and QoS routing [6] With respect to QoS guarantees, due to the lack of sufficiently accurate knowledge, both instantaneous and predictive, of the network states, even statistical QoS guarantees may be impossible if the nodes are highly mobile. In addition, scalability with respect to network ....
R. Wattenhofer, L. Li, P. Bahl, and Y. Wang, "Distributed Topology Control for Power-Efficient Operation in Multihop Wireless Ad Hoc Networks," in Proceedings of IEEE INFOCOM 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in vol. 3. Anchorage: IEEE, Apr. 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y. M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in Proc. IEEE Infocom, 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y. M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in Proc. IEEE Infocom, 2001.
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R. Wattenhofer, L. Li, P.Bahl, Y.M.Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks", Proc. IEEE Infocom 2001, pp. 1388-1397.
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Roger Wattenhofer, Li Li, Paramvir Bahl, Yi-Min Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks", IEEE INFOCOM, pp. 1388-1387, 2001.
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R. Wattenhofer, L. Li, P.Bahl, Y.M.Wang, "Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks", Proc. IEEE Infocom 2001, pp. 1388-1397.
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R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed topology control for power efficient operation in multihop wireless networks," in Proc. IEEE INFOCOM, pp. 1388--1397, 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y. M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," In Proc. IEEE Infocom, 2001.
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R. Wattenhofer, L. Li, P. Bahl and Y. Wang. Distributed Topology Control for Power Efficient Operation in Multihop Wireless Ad Hoc Networks. In Proceedings of the Twentieth Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM), Anchorage, Alaska, April 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y.-M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in Proc. IEEE INFOCOM, April 2001.
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R. Wattenhofer, L. Li, P. Bahl, and Y. M. Wang, "Distributed topology control for power efficient operation in multihop wireless ad hoc networks," in Proc. IEEE Infocom, 2001.
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