Communications and communication protocols play an important role in mobile robot systems. They enable the latter to address many real world applications. Since the advent of highperformance wireless local area network (WLAN) and ad hoc networking technology at relatively low cost, their use for wireless communications among mobile robots has become a practical proposition. However, in a large system with manymobile robots, it becomes difficult for all robots to exchange information at a time because of their limited communication capacities. In this case, an ad-hoc robot networking scheme is more promising. This paper focuses on this scheme by presenting the background of mobile ad hoc networks, ad-hoc robot wireless communications, and their applications. It serves readers with a comprehensive review of adhoc robot wireless communications and indication of the future research issues.
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