Magnetic field communication method and apparatus capable of recognizing multiple nodes
First Claim
1. A magnetic field communication method performed by a coordinator of a magnetic field area network, the method comprising:
- (a) sending a request packet requesting at least one of;
association with the network, disassociation from the network, network association state checking, data transmission, or group address setting;
(b) receiving response packets from nodes which have received the request packet;
(c) selecting one or more response packets from among the response packets received at (b);
(d) sending a response acknowledgement packet to nodes corresponding to the response packets selected at (c);
(e) receiving response packets resent by nodes which have not received the response acknowledgement packet sent at (d);
(f) selecting one or more response packets from among the response packets received at (e); and
(g) sending a response acknowledgement packet to nodes corresponding to the response packets selected at (f).
2 Assignments
0 Petitions
Accused Products
Abstract
Magnetic field communication methods and apparatuses are performed by the coordinator and node of a magnetic field area network, respectively. The method which is performed by the coordinator includes: (a) sending a request packet requesting association with a network, disassociation from a network, network association state checking, data transmission, or group address setting, (b) receiving response packets, (c) selecting one or more response packets from among the received response packets, (d) sending a response acknowledgement packet to nodes corresponding to the selected response packets, (e) receiving response packets resent by nodes which have not received the sent response acknowledgement packet, (f) selecting one or more response packets from among the response packets received at (e), and (g) sending a response acknowledgement packet to nodes corresponding to the response packets selected at (f).
13 Citations
15 Claims
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1. A magnetic field communication method performed by a coordinator of a magnetic field area network, the method comprising:
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(a) sending a request packet requesting at least one of;
association with the network, disassociation from the network, network association state checking, data transmission, or group address setting;(b) receiving response packets from nodes which have received the request packet; (c) selecting one or more response packets from among the response packets received at (b); (d) sending a response acknowledgement packet to nodes corresponding to the response packets selected at (c); (e) receiving response packets resent by nodes which have not received the response acknowledgement packet sent at (d); (f) selecting one or more response packets from among the response packets received at (e); and (g) sending a response acknowledgement packet to nodes corresponding to the response packets selected at (f). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A magnetic field communication method performed by a node of a magnetic field area network, the method comprising:
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(a) receiving a request packet from a coordinator of the network; (b) sending to the coordinator a response packet corresponding to the request packet received at (a), for the response packet being at least one for;
association with the network, disassociation from the network, network association state checking, data transmission, and group address setting; and(c) resending the response packet to the coordinator if an acknowledgement packet has not been received from the coordinator, wherein (b) and (c) are performed in a response interval of a frame comprising; a request interval in which the coordinator sends the request packet; the response interval in which the node sends the response packet; and an inactive interval which starts when no node has sent a response packet in response to the request packet for a predetermined period of time. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification