A Wireless Sensors Network (WSN) is an ad-hoc network populated by small hand-held commodity\ndevices, running on batteries called stations or sensors. Often used in hostiles and sometimes\nunreachable environments, stations are subject to energetic constraints which can significantly\ndecrease the network life time. Permutation routing problem is mainly found in the literature of\nWSN. This problem occurs when some stations have items that belong either or not to them. The\ngoal is to send each item to its receiver. To solve this problem, several works are presented in the\nliterature. In this paper, we present a new permutation routing protocol for multi-hop wireless\nsensors network that, compared to recent work in the field is more efficient in terms of conservation\nof sensors� energy, which results in a longer life time of the network. Also, contrary to some\nother routing protocols which assume that the memory of the sensors is infinite, we show that the\nmemory size of the sensors is limited, which in our opinion is more realistic.
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