A concept of communication distance and its application to six situations in mobile environments

Abstract

Abstract-Wireless networks combined with location technology create new problems and call for new decision aids. As a precursor to the development of these decision aids, a concept of communication distance is developed and applied to six situations. This concept allows travel time and bandwidth to be combined in a single measure so that many problems can be mapped onto a weighted graph and solved through shortest path algorithms. The paper looks at the problem of intercepting an out-of-communication team member and describes ways of using planning to reduce communication distance in anticipation of a break in connection. The concept is also applied to ad hoc radio networks. A way of performing route planning using a bandwidth map is developed and analyzed. The general implications of the work to transportation planning are discussed.

40 Gb/s wavelength division multiplexing-passive optical network (WDM-PON) for undersea wireless optical communication

“…A related (but unimplemented) solution given by Nickerson [173] involves setting the routing metric to be f (e) = t(e) − b(e) bmax t(e). The aim is to transfer a given quota of data in the least possible time.…”

Attention and Communication: Decision Scenarios for Teleoperating Robots

“…How can we more formally describe this? In a concurrent paper, we describe a metric we call communication distance, which is essentially a view of latency which is expanded to include the travel time it may take to establish communication [24]. In figure 8a, the communication is through radio, and is practically instant, and so is labeled with epsilon.…”

“…For example, in order to negotiate a traffic circle, an operator may require a high throughput link to see a real-time video feed, and require the latency of the link to be low so that avoidance and braking maneuvers don't lag. Ways these more complex requirements can change route planning have been discussed in [24].…”

Robots and humans reconvening

“…How can we formalize this? In a concurrent paper, we have discussed a concept called communication distance, which is latency redefined to include the amount of time it takes to move into a position to establish a connection [15].…”

“…Our parallel paper also alludes to a more general situation, in which we might not need to get all members of a collection back into contact, but just need some portion of the team back together again [15]. For example, it may be that a rescue team can still perform rescues if 30% of them can reconvene.…”