METHOD AND NODE FOR PREVENTING COLLISION BETWEEN NETWORKS COMMUNICATING BASED ON CSMA/CA
First Claim
1. A method of preventing collision between networks communicating based on a carrier sense multiple access/collision avoidance (CSMA/CA) scheme, the method comprising:
- synchronizing an object network with a neighboring network;
allocating, to the object network, a slot index based on a number of the networks, and a contention window (CW) size;
setting, for the object network, a back-off counter value based on the CW size;
reducing the back-off counter value based on a channel state of the object network, and the slot index; and
transmitting data related to the neighboring network based on the back-off counter value.
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Abstract
A method and a target node for preventing collisions between networks communicating based on a carrier sense multiple access/collision avoidance (CSMA/CA) scheme, are provided. The method includes synchronizing an object network with a neighboring network. The method further includes allocating, to the object network, a slot index based on a number of the networks, and a contention window (CW) size. The method further includes setting, for the object network, a back-off counter value based on the CW size. The method further includes reducing the back-off counter value based on a channel state of the object network, and the slot index. The method further includes transmitting data related to the neighboring network based on the back-off counter value.
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Citations
27 Claims
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1. A method of preventing collision between networks communicating based on a carrier sense multiple access/collision avoidance (CSMA/CA) scheme, the method comprising:
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synchronizing an object network with a neighboring network; allocating, to the object network, a slot index based on a number of the networks, and a contention window (CW) size; setting, for the object network, a back-off counter value based on the CW size; reducing the back-off counter value based on a channel state of the object network, and the slot index; and transmitting data related to the neighboring network based on the back-off counter value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of preventing collision between networks communicating based on a carrier sense multiple access/collision avoidance (CSMA/CA) scheme, the method comprising:
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synchronizing an object network with a neighboring network; allocating, to the object network, a slot index based on a number of the networks, and a contention window (CW) size; setting, for the object network, a back-off counter value based on the CW size; reducing the back-off counter value based on a channel state of the object network; and transmitting data related to the neighboring network based on the back-off counter value, the slot index, and the channel state. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A target node configured to prevent collision between networks communicating based on a carrier sense multiple access/collision avoidance (CSMA/CA) scheme, the target node comprising:
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a synchronization unit configured to synchronize the target node with a neighboring node; an allocation unit configured to allocate, to the target node, a slot index based on a number of the networks, and a contention window (CW) size; a set unit configured to set, for the target node, a back-off counter value based on the CW size; a reduction unit configured to reduce the back-off counter value based on a channel state of the target node, and the slot index; and a transmission unit configured to transmit data related to the neighboring node based on the back-off counter value. - View Dependent Claims (19, 20, 21, 22)
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23. A target node configured to prevent collision between networks communicating based on a carrier sense multiple access/collision avoidance (CSMA/CA) scheme, the target node comprising:
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a synchronization unit configured to synchronize the target node with a neighboring node; an allocation unit configured to allocate, to the target node, a slot index based on a number of the networks, and a contention window (CW) size; a set unit configured to set, for the target node, a back-off counter value based on the CW size; a reduction unit configured to reduce the back-off counter value based on a channel state of the target node; and a transmission unit configured to transmit data related to the neighboring node based on the back-off counter value, the slot index, and the channel state. - View Dependent Claims (24, 25, 26, 27)
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Specification