Node structure information management method and radio network system
First Claim
1. A method of managing the node configuration in a wireless network comprising a hub station and a plurality of nodes, whereinthe hub station comprises a hub station management table for managing unique information about each of the nodes, wherein the updating of the hub station management table is managed by first update timing information that is transmitted to all of the nodes periodically, wherein if the hub station management table is modified, modification information is transmitted to all of the nodes together with the first update timing information, whereineach node has a node management table for managing the unique information about the node, wherein the node receives the first update timing information and the update information, compares first update timing information in its own management table with the first update timing information transmitted from the hub station, and rewrites its own management table based on the update information if its own update timing information is older.
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Accused Products
Abstract
A node configuration information management method and a wireless network system whereby node configuration information about a wireless bus comprising a hub station and a plurality of nodes is managed by the hub station in a centralized manner so that the hub station can share the latest node configuration information with all of the nodes. According to the node configuration information management method, when the node information in the wireless bus 11 is modified, a node notifies the hub station of the modification via a modification notifying packet. Further, 1) Each node and the hub station store the node configuration information about each node in a node configuration information table, and the hub station has a counter for managing the updating of the node configuration information table as a whole and transmits a count in each frame; 2) The hub station, upon reception of the node configuration modification notification from the node, updates its own node configuration information table, and broadcasts update information to all of the nodes; 3) The node receives the modification information and updates its own node configuration information table, while receiving the count transmitted in each frame, determining if there is updating on the part of the hub station, requesting retransmission of differential information concerning the difference, if any, from its own node configuration information table, and updating its own node configuration information table.
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Citations
12 Claims
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1. A method of managing the node configuration in a wireless network comprising a hub station and a plurality of nodes, wherein
the hub station comprises a hub station management table for managing unique information about each of the nodes, wherein the updating of the hub station management table is managed by first update timing information that is transmitted to all of the nodes periodically, wherein if the hub station management table is modified, modification information is transmitted to all of the nodes together with the first update timing information, wherein each node has a node management table for managing the unique information about the node, wherein the node receives the first update timing information and the update information, compares first update timing information in its own management table with the first update timing information transmitted from the hub station, and rewrites its own management table based on the update information if its own update timing information is older.
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2. A method of managing the node configuration in a wireless network comprising a hub station and a plurality of nodes, wherein
the hub station has a hub station management table for managing unique information about each of the nodes, wherein updating of the hub station management table is managed based on first update timing information that is transmitted to all of the nodes periodically, wherein each node has a node management table for managing the unique information about the node, wherein the node receives the first update timing information and compares first update timing information in its own management table with the first update timing information transmitted from the hub station, wherein the node requests the transmission of the unique information data if its own update timing information is old, and rewrites its own management table based on the unique information data transmitted from the hub station in response to the request.
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5. A method of managing the node configuration in a wireless network comprising a hub station and a plurality of nodes, wherein
the hub station has a hub station management table for managing unique information about each node, wherein updating of the hub station management table is managed based on first update timing information, wherein each node has a node management table for managing the unique information about each node, wherein the updating of the node management table is managed based on the first update timing information, the node periodically transmitting the first update timing information that it manages to the hub station, wherein the hub station compares its own first update timing information with the first update timing information transmitted from each node periodically, the hub station creating the unique information data if the two items of information are different and transmitting it to the corresponding node, wherein the node rewrites its own management table based on the data transmitted from the hub station.
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11. A wireless network system comprising a hub station and a plurality of nodes, wherein
the hub station comprises a hub station management table for managing unique information about each node based on first update timing information, a detection means for detecting a modification in the node configuration, an update means for updating the hub station management table in accordance with the result of detection by the detection means, and a transmitter for transmitting, if there is a modification in the hub station management table, modification information to all of the nodes together with the first update timing information, as well as transmitting the first update timing information to all of the nodes periodically, wherein each node comprises a node management table for managing the unique information about the node based on the first update timing information, a receiver for receiving the first update timing information, and an update means for comparing the first update timing information in the node management table of the node with the first update timing information transmitted from the hub station and for updating, if the update timing information of the node is old, its own node management table based on the modification information.
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12. A wireless network system comprising a hub station and a plurality of nodes, wherein
the hub station comprises a hub station management table for managing unique information about each node based on first update timing information, a detection means for detecting a modification in the node configuration, an update means for updating the hub station management table in accordance with the result of detection by the detection means, and a transmitter for transmitting the first update timing information to all of the nodes periodically, wherein each node comprises a node management table for managing the unique information about the node based on the first update timing information, a receiver for receiving the first update timing information, a data transmission request means for comparing the first update timing information in the node management table of the node with the first update timing information transmitted from the hub station and for requesting, if the update timing information of the node is old, the transmission of the unique information data, and an update means for updating its own node management table based on the unique information data transmitted from the hub station in accordance with the request.
Specification