Geocast

Geocast refers to the delivery of information to a group of destinations in a network identified by their geographical locations. It is a specialized form of multicast addressing used by some routing protocols for mobile ad hoc networks.

Geographic addressing
Routing schemes
Unicast

Broadcast

Multicast

Anycast

Geocast

A geographic destination address is expressed in three ways: point, circle (with center point and radius), and polygon (a list of points, e.g., P(1), P(2), …, P(n–1), P(n)). A geographic router (Geo Router) calculates its service area (geographic area it serves) as the union of the geographic areas covered by the networks attached to it. This service area is approximated by a single closed polygon. Geo Routers exchange service area polygons to build routing tables. The routers are organized in a hierarchy.

Applications

Geographic addressing and routing has many potential applications in geographic messaging, geographic advertising, delivery of geographically restricted services, and presence discovery of a service or mobile network participant in a limited geographic area (see Navas, Imieliński, 'GeoCast - Geographic Addressing and Routing'.[1])

gollark: Well, in this model, it is already too late, as they cannot make blood not go below 40% regardless of thing done.
gollark: This is not a great analogy. It's not like one person/group could just trivially fix climate change if they weren't terrible people, or something; it's a coordination problem.
gollark: They became sentient in late 2019. Most people haven't noticed.
gollark: Crimes are widely considered bad because they have bad effects on people/cause suffering. I don't agree with causing *more* of that.
gollark: That depends on how much people are committing crimes due to impulse things, and how salient that sort of thing actually is in decision-making wrt. criming crimes.

See also

References
  1. Navas, J.C.; Imieliński, T. (1997). "GeoCast - Geographic Addressing and Routing". Proceedings of the 3rd annual ACM/IEEE international conference on Mobile computing and networking: 66–76.
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