Distributed channel hopping method in wireless ad-hoc network
First Claim
1. A distributed channel hopping method in a wireless ad-hoc network, the method comprising:
- at a node that is to access the wireless ad-hoc network, receiving beacons of a plurality of nodes included in the wireless ad-hoc network through a channel scanning process;
obtaining information from the received beacons about offset values used by a plurality of neighboring nodes of the first node within collision range;
determining a first offset value to be used by the first node based on the information about the offset values used by the plurality of neighboring nodes; and
transmitting a message including the first offset value to the plurality of neighboring nodes and determining whether any one of the plurality of neighboring nodes uses the first offset value.
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Abstract
A distributed channel hopping communication method in a low power wireless ad-hoc network. A beacon transmission and reception scheduling method using a distributed channel hopping method in a wireless ad-hoc network, the method includes: transmitting beacons using channel hopping, before establishing the wireless ad-hoc network including a plurality of nodes having a BP including at least one time slot, and receiving beacons of a plurality of neighboring nodes of each of the plurality of nodes; collecting information about the wireless ad-hoc network and information about the plurality of neighboring nodes from the received beacons; scheduling the receiving of the beacons that are transmitted from the plurality of neighboring nodes in the BP, using TDMA in each of the at least one time slot based on the information about the plurality of neighboring nodes; and scheduling transmitting of a beacon in each of the at least one time slot.
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Citations
16 Claims
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1. A distributed channel hopping method in a wireless ad-hoc network, the method comprising:
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at a node that is to access the wireless ad-hoc network, receiving beacons of a plurality of nodes included in the wireless ad-hoc network through a channel scanning process; obtaining information from the received beacons about offset values used by a plurality of neighboring nodes of the first node within collision range; determining a first offset value to be used by the first node based on the information about the offset values used by the plurality of neighboring nodes; and transmitting a message including the first offset value to the plurality of neighboring nodes and determining whether any one of the plurality of neighboring nodes uses the first offset value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A distributed channel hopping method in a wireless ad-hoc network using a plurality of channels, the wireless ad-hoc network comprising:
- a plurality of nodes each having a previously determined offset value based on information about offset values used by a plurality of neighboring nodes and changing channels according to a previously determined hopping pattern, the plurality of nodes including at least one time slot, using a beacon period (BP) in which beacons are transmitted, and the at least one time slot is used in a time division multiple access (TDMA) manner.
- View Dependent Claims (10, 11, 12, 13)
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14. A wireless ad-hoc network system using a distributed channel hopping method, the system comprising:
- a plurality of nodes each having a previously determined offset value based on information about offset values used by a plurality of neighboring nodes and changing channels according to a previously determined hopping pattern, the plurality of nodes including at least one time slot, using a beacon period (BP) in which beacons are transmitted, and the at least one time slot is used in a time division multiple access (TDMA manner).
- View Dependent Claims (15, 16)
Specification