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This paper considers dynamic wireless networks where messages arriving randomly (in time and space) are collected by a mobile receiver. The messages are transmitted to the mobile receiver according to a random access scheme and the receiver dynamically adjusts its position in order to receive these messages in the least amount of time. The authors study utilizing a combination of wireless transmission and controlled mobility to improve the delay performance in such networks. In particular, they analytically characterize the tradeoff between wireless transmission and physical movement of the mobile receiver. The authors derive a fundamental lower bound for the delay in the system and show how it's effected by different communication parameters.
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