Method for bluetooth on-demand routing and network formation, and communication method in bluetooth group ad hoc network
First Claim
1. A method for routing and network formation of a network system having a source node, a destination node, and a plurality of independent nodes, the method comprising the steps of:
- setting multi forward paths from the source node towards the destination node to which the source node sends out a route request message;
setting a backward path in which the destination node in receipt of the route request message sends out a route reply message to the source node along one of the set multi forward paths, wherein a route is formed as a most suitable path between the source node and the destination node by a master-slave switching through the set backward path; and
confirming the one of the set multi-forward paths within a predetermined time period,wherein the master-slave switching switches a master node to a slave node,wherein when the one of the multi forward paths are not confirmed within the predetermined time period, links on unselected forward paths are parked,wherein the route request message is a routing trigger that initiates an Inquiry operation in the source node to find and connect neighboring nodes, and wherein the Inquiry operation depends upon a generated random number.
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Abstract
A method for Bluetooth on-demand routing, and network formation, and a communication method of a Bluetooth group ad hoc network. With respect to a Bluetooth network system that has a source node, a destination node and a plurality of independent nodes, the method includes the forward and the backward path set-up steps. In the forward path set-up step, the source node sends out a route request message, thus setting up multi forward paths towards the source node and the destination node. In the backward path set-up step, the destination node in receipt of the route request message sends out a route reply message to the source node through one of the set forward paths, thus setting up a backward path. Through the set backward path, a route is formed as the most suitable path between the source node and the destination node to save battery power and provide broader bandwidth.
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Citations
17 Claims
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1. A method for routing and network formation of a network system having a source node, a destination node, and a plurality of independent nodes, the method comprising the steps of:
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setting multi forward paths from the source node towards the destination node to which the source node sends out a route request message; setting a backward path in which the destination node in receipt of the route request message sends out a route reply message to the source node along one of the set multi forward paths, wherein a route is formed as a most suitable path between the source node and the destination node by a master-slave switching through the set backward path; and confirming the one of the set multi-forward paths within a predetermined time period, wherein the master-slave switching switches a master node to a slave node, wherein when the one of the multi forward paths are not confirmed within the predetermined time period, links on unselected forward paths are parked, wherein the route request message is a routing trigger that initiates an Inquiry operation in the source node to find and connect neighboring nodes, and wherein the Inquiry operation depends upon a generated random number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication method of a Bluetooth group ad hoc network that comprises a plurality of adjacent wireless communication devices, the communication method comprising the steps of:
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forming a network that comprises a plurality of piconets comprising a slave node operating as a slave in only one piconet, a master node operating as a master in only one piconet, a slave-slave joint node operating as a slave in two piconets, and a master-slave joint node operating as a slave in one piconet while operating as a master in another piconet, and at least two piconets are connected by the slave-slave joint node; and with a reception of a routing trigger at a joint node, the joint node bridging the piconets belonging to the formed network, wherein the slave node performs an Inquiry Scan at a regular basis to be found by a new master, and with a reception of the routing trigger, performs an Inquiry to find a nearby network, wherein the routing trigger initiates stopping of the inquiry in progress and reforming of the network along a backward path, wherein the routing trigger is a signal generated from one of a routing protocol and a management entity, and at least one of a route request (RREQ), route reply (RREP), and route error (RERR), and wherein the Inquiry Scan depends upon a generated random number. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for routing formation of a source node, the method comprising the steps of:
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setting multiple paths towards a destination node by transmitting a route request message; receiving a route reply message through one of the set multiple paths from the destination node in receipt of the route request message, and using a most suitable route if the most suitable route is formed between the source node and the destination node through the one set path by a master-slave switching which switches a master node to a slave node; and confirming the one of the set multi-forward paths within a predetermined time period, wherein when the one of the set multi forward paths are not confirmed within the predetermined time period, links on unselected forward paths are parked, wherein the route request message is a routing trigger that initiates an Inquiry operation in the source node to find and connect neighboring nodes, wherein the Inquiry operation depends upon a generated random number.
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17. A method for routing formation of a destination node, the method comprising the steps of:
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sending a route reply message through one of multiple paths set in accordance with a route request message sent out from a source node; using a most suitable route if the most suitable route is formed between the source node and the destination node through one of the set paths by a master-slave switching which switches a master node to a slave node; and confirming the one of the set paths within a predetermined time period, wherein when the one of the set paths are not confirmed within the predetermined time period, links on unselected forward paths are parked, wherein the route request message is a routing trigger that initiates an Inquiry operation in the source node to find and connect neighboring nodes, wherein the Inquiry operation depends upon a generated random number.
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Specification