S. Cheshire, M. Baker, "A Wireless Network in MosquitoNet" IEEE Micro, February 1996  Home/Search   Document Not in Database   Summary   Related Articles   Check

....switching between arbitrary network systems. In contrast to our work, the Overlay IP mechanism described in BARWAN project (see above) is used for switching between the two networks. 2.2. MosquitoNet The integration of wireline and wireless access was also an idea behind the MosquitoNet project [4]. The basic approach in this project was a modification of Mobile IP in a way that the mobile node in the foreign network has a temporal and topological correct IP address, which is assigned by, e.g. DHCP [5] Therefore, no foreign agent is needed and the mobile node is responsible for signaling ....

S. Cheshire, M. Baker, "A Wireless Network in MosquitoNet" IEEE Micro, February 1996

....high delay or loss. Most automated solutions to flash crowds are expensive and available to large enterprises rather than individuals. Automated approaches to handling network hot spots are either based on CDN approaches (useful for one way data distribution) proprietary networks (e.g. Metricom [3]) single user solutions (e.g. RON [1] or are mostly ad hoc and similarly limited in reaction time (e.g. BGP based solutions [15] We expect that as the network grows in scale and scope, wide area disconnections and poor performance will become more common. Today, many faults and performance ....

.... to route around failures, including BGP [15] In particular, the same fault resilience approach can be applied to other self organizing, scalable overlay network [9, 13, 17, 21] It is also important to observe that while FRLS and protocols similar to it are useful for routing around congestion [3], the simple UDP measurement scheme was designed to most effectively deal with link connectivity loss, and not congestion measurement. FRLS focuses on simplicity and low computational overhead, however, we are evaluating algorithms that compare link conditions with finer granularity and make ....

CHESHIRE, S., AND BAKER, M. A wireless network in mosquitonet. IEEE Micro 16, 1 (February 1996), 44--52.

....network technologies can be adapted for enabling wireless access for palmtop devices, none of the technologies pro vide a cost effective solution. Wide area solutions such as CDPD, ARDIS, RAM are not suitable for indoor use. Metricom s Richochet wireless modem design is an attractive alternative [3, 8]. However, such solutions are intended to be a wide area wireless service, not a plug n play, build your own kind of a wireless system. They also consume approximately 100 time more power than any PDA device, are twice as expensive as any PDA, and do not provide any low cost method of connecting a ....

S. Cheshire and M. Baker. A Wireless Network in MosquitoNet. IEEE Micro, 16(1):44-52, February 1996.

....network technologies can be adapted for enabling wireless access for palmtop devices, none of the technologies provide a cost e ective solution. Wide area solutions such as CDPD, ARDIS, RAM are not suitable for indoor use. Metricom s Richochet wireless modem design is an attractive alternative [3, 8]. However, such solutions are intended to be a wide area wireless service, not a plug n play, build your own kind of a wireless system. They also consume approximately 100 time more power than any PDA device, are twice as expensive as any PDA, and do not provide any low cost method of connecting a ....

S. Cheshire and M. Baker. A Wireless Network in MosquitoNet. IEEE Micro, 16(1):44-52, February 1996.

....such a network and the wireless cable modem network we consider in this study is that the former has a much larger bandwidth delay product, which could be the dominating factor in performance. Finally, some basic performance measurements of Metricom s Ricochet packet radio network are presented in [7]. While the results and analysis in [15] and [18] are very useful, the set of problems is far from being understood or solved. In addition to proposing and evaluating other schemes to alleviate the adverse effects of bandwidth asymmetry, we also characterize other types of asymmetry that occur in ....

S. Cheshire and M. Baker. A Wireless Network in MosquitoNet. IEEE Micro, Feb 1996.

....such a network and the wireless cable modem network we consider in this study is that the former has a much larger bandwidth delay product, which could be the dominating factor in performance. Finally, some basic performance measurements of Metricom s Ricochet packet radio network are presented in [5], such as oneway transmission delays of unidirectional traffic. While the results and analysis in [13] and [16] are very useful, the set of problems is far from being understood or solved. In addition to proposing and evaluating other schemes to alleviate the adverse effects of bandwidth ....

....in the packet radio network, we implicitly assume that the Web requests use pipelining [19] and that one 500 byte request results in 4 downloads. We vary the number of hosts from 1 to 50 in the simulations. Hosts make requests independent of each other at a time uniformly distributed in [0,5] seconds. We measure the mean and standard deviation of the completion time for the entire Web transaction (i.e. all 4 connections) Figure 14 shows the mean completion time for a transaction as the number of hosts varies, for TCP Reno, Reno with ACC (Section 4.3.1) and Reno with AF (Section ....

S. Cheshire and M. Baker. A Wireless Network in MosquitoNet. IEEE Micro, Feb 1996.

....analysis is divided into two parts: overall network behavior and radio mobility. 2. BACKGROUND In this section, we describe the network traced, how the data was collected, and some issues that arose in the data analysis. 2. 1 Data Collection The traces we study here were obtained from Metricom [1][5] Metricom has installed a Ricochet packet radio network infrastructure in three major metropolitan areas (San Francisco Bay Area, Washington D.C. and Seattle) as well as in some airports, hotels, and college campuses scattered across the United States. This infrastructure consists of ....

....Queries are usually made when a radio makes a new connection, although some radios are used as part of Metricom s diagnostic utilities and make many more queries than are normal. Note that a query is made regardless of whether the user is using the radio in modem mode or StarMode (or packet mode) [1]. If the radio is being used in StarMode, the radio could have multiple outstanding connections at a time. Since we do not have information about the end of a connection, we do not account for Number of Locations Number of Radios ( Average Distance Median Distance Number of Locations ....

Cheshire, S. and Baker, M. A Wireless Network in MosquitoNet. IEEE Micro, February 1996, 44-52.

....radio mobility. 6 CHAPTER 2. ANALYZING A METROPOLITAN AREA WIRELESS NETWORK 7 2.1 Background In this section, we describe the network traced, how the data was collected, and some issues that arose in the data analysis. 2.1. 1 Data Collection The traces we study here were obtained from Metricom [12][41] Metricom has installed a Ricochet TM packet radio network infrastructure in three major metropolitan areas (San Francisco Bay Area, Washington D.C. and Seattle) as well as in some airports, hotels, and college campuses scattered across the United States. This infrastructure consists of ....

....made when a radio makes a new connection, although some radios are used as part of Metricom s diagnostic utilities and make many more queries than are normal. Note that a query is made regardless of whether the user is using the radio in modem mode (connection based mode) or StarMode (packet mode) [12]. If the radio is being used in StarMode, the radio could have multiple outstanding connections at a time. Since we do not have information about the end of a connection, we do not account for this situation. Using the radios in modem mode is prevalent, however. Because very few radios are used ....

Cheshire, S. and Baker, M. A Wireless Network in MosquitoNet. IEEE Micro, February 1996, 44-52.

....analysis is divided into two parts: overall network behavior and radio mobility. 2. Background In this section, we describe the network traced, how the data was collected, and some issues that arose in the data analysis. 2.1. Data Collection The traces we study here were obtained from Metricom [2][6] Metricom has installed a Ricochet TM packet radio network infrastructure in three major metropolitan areas (San Francisco Bay Area, Washington D.C. and Seattle) as well as in some airports, hotels, and college campuses scattered across the United States. This infrastructure consists of ....

....Fraction of Queries Figure 14. Cumulative histogram of the number of times a certain number of registrations occur before a query. Note that to show the detail, we cut o# the tail of the graph which extends to 7,948 registrations between queries. dio in modem mode or StarMode (or packet mode) [2]. If the radio is being used in StarMode, the radio could have multiple outstanding connections at a time. Since we do not have information about the end of a connection, we do not account for this situation. Using the radios in modem mode is prevalent, however. Because very few radios are used ....

Cheshire, S. and Baker, M. A Wireless Network in MosquitoNet. IEEE Micro, February 1996, 44-52.

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Stuart Cheshire and Mary Baker, A Wireless Network in MosquitoNet, IEEE Micro, February 1996.

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