Radio transmission apparatus, routing method, and routing program of radio network

2 The radio transmission apparatus according to claim 1,

• wherein, when said antenna system receives said routing packet from the node over said radio network, it detects the received direction and information associated with a received signal of said routing packet, and
• wherein said routing section updates said metric information, based on said detected received direction and information associated with said received signal.

3 The radio transmission apparatus according to claim 1,

• wherein, when said antenna system receives said routing packet from the node over said radio network, it detects the received direction and a received level of said routing packet, and
• wherein said routing section updates said metric information, based on said detected received direction and received level.

4 A radio transmission apparatus that is a node configuring a radio network, said radio transmission apparatus including:

• an antenna system for receiving a routing packet and information of a received signal from the node over said radio network to acquire a received direction of said routing packet;
• and
• a routing section for, in the event that said antenna system received the routing packet, acquiring an identifier of a transmission source node, metric information indicating a route cost, and an identifier of a route destination node from said routing packet, and in the event that it was judged that said route destination node was not its own node, updating said metric information, based on said received direction and information of said received signal, to record it in a metric storage section, to acquire the received direction of the node having minimum metric information from said metric storage section, and to control a direction of said antenna system.

5 The radio transmission apparatus according to claim 4, wherein said metric storage section comprising a table for filing said metric information updated by employing the identifier of the transmission source node, said received direction, and information of the received signal acquired from said routing packet, said node by said node.

6 A radio transmission apparatus that is a node configuring a radio network, said radio transmission apparatus comprising an antenna system for a routing packet, an antenna system for data transmission, a routing section, and a metric storage section,

• wherein said antenna system for a routing packet receives a routing packet, and acquires a received direction and information of a received signal of said routing packet, and
• wherein said routing section acquires an identifier of a transmission source node, metric information indicating a route cost, and an identifier of a route destination node from said routing packet, and in the event that said routing section judged that said route destination node was not its own node, it employs said received direction and information of said received signal, updates said acquired metric information, records it in said metric storage section, acquires the received direction of the node having minimum metric information from said metric storage section, and controls a direction of said antenna system for data transmission.

7 The radio transmission apparatus according to claim 6, said radio transmission apparatus comprising a service antenna storage section for, in controlling the direction for said antenna system for data transmission, recording the identifier of the node recorded responsive to said received direction in said metric storage section, and the identifier of the antenna for which the direction was controlled.

8 The radio transmission apparatus according to claim 6, wherein, in the event that said routing section received said routing packet, it records the received direction of the received signal of which a receiving state is better, based on information associated with the acquired received signal, in the event that the identifier of the transmission source node and the metric information of said routing packet have already been recorded in said metric storage section, and the detected received direction is different from the recorded received direction.

9 The radio transmission apparatus according to claim 6, wherein, in the event that said routing section judged that said metric information recorded in said metric storage section was sufficiently collected, it acquires the received direction of the node having minimum metric information from said metric storage section, and controls the direction of said antenna system for data transmission.

10 The radio transmission apparatus according to claim 6, wherein an antenna for transmission of said antenna system for a routing packet is configured of an antenna capable of radiating radio waves in all directions, and an antenna for reception thereof is configured of an array antenna or a directional antenna capable of specifying the received direction.

11 The radio transmission apparatus according to claim 6, wherein, in the event that said routing section received said routing packet, it acquires the received direction of the said routing packet, the identifier of the transmission source node, the metric information indicating the route cost, and the identifier of a route destination node that is a neighboring node of said transmission source node that is positioned upstream the route, and in the event that the identifier of said route destination node indicates its own node, said routing section takes control so as to match the direction of said antenna system for data transmission to said received direction.

12 The radio transmission apparatus according to claim 11, wherein said routing section records the identifier of said transmission source node, said received direction, and said metric information in a table of said metric storage section, selects the nodes equivalent to the number of the usable antennas of the antenna system for data transmission from said table, and takes control so as to match the direction of each antenna of the antenna system for data transmission to the received direction recorded responsive to said selected node.

13 The radio transmission apparatus according to claim 12, wherein said routing section records the identifier of said selected node, and the identifier of each antenna of the antenna system for data transmission, which is used for said selected node, in said service antenna storage section.

14 The radio transmission apparatus according to claim 11, wherein, in the event that said routing section judged that said metric information of said table was sufficiently collected, it selects the nodes equivalent to the number of the usable antennas from said table.

15 The radio transmission apparatus according to claim 7, wherein said routing section generates a routing table for specifying the route for a route destination of its own node from the identifier of a route destination node, and the identifier or the direction of the antenna stored in said service antenna storage section for a neighboring node, which is transmitted for communicating with said route destination node.

16 A routing method in a node configuring a radio network, said routing method including the steps of:

• in the event of having received a routing packet from the node over said radio network, acquiring and recording a received direction of said routing packet, an identifier of a transmission source node, metric information indicating a route cost, and an identifier of a route destination node;
• and
• in the event that said route destination node is not its own node, taking control so as to match a direction of an antenna system to said received direction of the node having minimum metric information out of said metric information.

17 The routing method according to claim 16, said routing method including the steps of:

• in the event of having received said routing packet, detecting a received direction and information associated with a received signal of said routing packet;
• and
• updating and recording the metric information indicating the route cost to said transmission source node, based on said received direction and information associated with said received signal, and taking control so as to match a direction of an antenna system to said received direction of the node having minimum metric information out of said metric information.

19 The routing method according to claim 16, said routing method including the steps of:

• in the event of having received said routing packet, acquiring the received direction of said routing packet, the identifier of the transmission source node, the metric information indicating the route cost, and the identifier of a route destination node that is a neighboring node of said transmission source node that is positioned upstream the route;
• and
• in the event that the identifier of said route destination node indicates its own node, taking control so as to match the direction of an antenna system for data transmission to said received direction.

20 A routing program for executing a routing in a node configuring a radio network, said routing program including the functions of:

• in the event of having received a routing packet from the node over said radio network, acquiring and recording a received direction of said routing packet, an identifier of a transmission source node, metric information indicating a route cost, and an identifier of a route destination node;
• and
• in the event that said route destination node is not its own node, taking control so as to match a direction of an antenna system to said received direction of the node having minimum metric information out of said recorded metric information.

21 The routing program according to claim 20, said routing program including a function of, in the event of having received said routing packet, detecting a received direction and information associated with a received signal of said routing packet to update and record the metric information indicating the route cost to said transmission source node, based on said received direction and information associated with said received signal, and taking control so as to match the direction of the antenna system to said received direction of the node having minimum metric information out of said metric information.

22 The routing program according to claim 20, said routing program including a function of acquiring the identifier of the transmission source node, the metric information indicating the route cost, and the identifier of a route destination node from the routing packet received in an antenna system for a routing packet, and in the event that it was judged that said route destination node was not its own node, employing said received direction and information of said received signal to update said acquired metric information, to record it in a metric storage section, to acquire the received direction of the node having minimum metric information from said metric storage section, and to control the direction of an antenna system for data transmission.

23 The routing program according to claim 22, said routing program including a function of, in controlling the direction for said antenna system for data transmission, recording the identifier of the node recorded responsive to said received direction in said metric storage section, and the identifier of an antenna, for which the direction was controlled, in a service antenna storage section.

24 The routing program according to claim 22, said routing program including a function of, in the event of having received said routing packet, recording the received direction of the received signal, of which a receiving state is better, based on information associated with the acquired received signal in the event that the identifier of the transmission source node and the metric information of said routing packet have already been recorded in said metric storage section, and the detected received direction is different from the recorded received direction.

25 The routing program according to claim 22, said routing program including a function of, in the event that it was judged that said metric information recorded in said metric storage section was sufficiently collected, acquiring the received direction of the node having minimum metric information from said metric storage section to control the direction of said antenna system for data transmission.

26 The routing program according to claim 21, said routing program including a function of, in the event of having received said routing packet, acquiring the received direction of said routing packet, the identifier of the transmission source node, the metric information indicating the route cost, and the identifier of a route destination node that is a neighboring node of said transmission source node that is positioned upstream the route, and in the event that the identifier of said route destination node indicates its own node, taking control so as to match the direction of said antenna system for data transmission to said received direction.

27 The routing program according to claim 26, said routing program including a function of recording the identifier of said transmission source node, said received direction, and said metric information in a table of said metric storage section to select the nodes equivalent to the number of the usable antennas of the antenna system for data transmission from said table, and to take control so as to match the direction of each antenna of the antenna system for data transmission to the received direction recorded responsive to said selected node.

28 The routing program according to claim 27, said routing program including a function of recording the identifier of said selected node, and the identifier of each antenna of the antenna system for data transmission to be used for said selected node in said service antenna storage section.

29 The routing program according to claim 26, said routing program including a function of, in the event that it was judged that said metric information of said table was sufficiently collected, selecting the nodes equivalent to the number of the usable antennas from said table.

30 The routing program according to claim 29, said routing program including a function of generating a routing table for specifying the route for a route destination of its own node from the identifier of the route destination node, and the identifier or the direction of the antenna stored in said service antenna storage section for a neighboring node, which is transmitted for communicating with said route destination node.