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with a neighboring transmitter. Consider an example of four nodes labeled R1, S1, S2, and R2, where the two receivers (R1, R2) are out of range of each other, yet the two transmitters (S1, S2) in the middle are in range of each other. Here, if a transmission between S1 and R1 is taking place, node
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mechanism helps to solve this problem only if the nodes are synchronized and packet sizes and data rates are the same for both the transmitting nodes. When a node hears an RTS from a neighboring node, but not the corresponding CTS, that node can deduce that it is an exposed node and is permitted to
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If the nodes are not synchronised (or if the packet sizes are different or the data rates are different) the problem may occur that the sender will not hear the CTS or the ACK during the transmission of data of the second sender.
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that it will interfere with the transmission by its neighbor S1. However note that R2 could still receive the transmission of S2 without interference because it is out of range of S1.
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119:. In the Proc. ACM SIGCOMM Conference (SIGCOMM '94), August 1994, pages 212-225.
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occurs when a node is prevented from sending packets to other nodes because of
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as the power and distance between cells is controlled to avoid it.
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S2 is prevented from transmitting to R2 as it concludes after
161:"Hidden vs. Exposed Terminal Problem in Ad hoc Networks"
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Multiple Access with
Collision Avoidance for Wireless
113:"MACAW: A Media Access Protocol for Wireless LAN's"
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65:The exposed node problem is not an issue in
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117:ACM SIGCOMM Computer Communication Review
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111:Bharghavan; et al. (1994-10-01).
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159:Jayasuriya; et al.
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18:Exposed station problem
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129:10.1145/190809.190334
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40:exposed node problem
181:Wireless networking
84:IEEE 802.11 RTS/CTS
79:Hidden node problem
55:IEEE 802.11 RTS/CTS
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67:cellular networks
36:wireless networks
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140:. Retrieved
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186:IEEE 802.11
175:Categories
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73:See also
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34:In
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103:^
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