Radio node apparatus, multi-hop radio system, and multi-hop radio system constructing method
First Claim
1. A method of constructing a multi-hop radio system including a plurality of radio nodes among which are ad-hoc connected in a tree structure and carry out multi-hop communication, wherein:
- a first radio node among the plurality of radio nodes acquires, from at least two second radio nodes in the plurality of radio nodes, state information including identification information of a root node of a group to which each of the second radio nodes is ad-hoc connected;
the first radio node selects a radio node from the second radio nodes as a first connection-accepting radio node based on a predetermined condition and connects to the first connection-accepting radio node; and
in the case where the first radio node reselects a radio node to be a second connection-accepting radio node after the connection between the first radio node and the first connection-accepting radio node is disconnected, the first node selects a radio node as the second connection-accepting radio node, whose identification information of the root node included in the state information acquired from the radio node is the same as identification information of a root node of a group to which the first radio node is ad-hoc connected and connects to the second connection-accepting radio node.
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Abstract
The present invention provides a radio node apparatus, a multi-hop radio system and a multi-hop radio system constructing method, capable of constructing a tree type multi-hop radio system in which mutual radio nodes determine a radio node which becomes a root node of a tree in an autonomous manner and the root node is set as a root in an autonomous manner. The radio node apparatus includes a storage unit for storing state information, used for constructing a multi-hop radio system, including information for specifying a root radio node apparatus positioned at a summit of the multi-hop radio system, with the radio node apparatus has a connection, and the number of hops from the root ratio node apparatus, a collection unit for collecting state information transmitted from surrounding radio node apparatus, and a selection unit for selecting a host connection-accepting radio node apparatus on the basis of the information for specifying the root radio node apparatus and the number of hops included in the collected state information.
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Citations
6 Claims
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1. A method of constructing a multi-hop radio system including a plurality of radio nodes among which are ad-hoc connected in a tree structure and carry out multi-hop communication, wherein:
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a first radio node among the plurality of radio nodes acquires, from at least two second radio nodes in the plurality of radio nodes, state information including identification information of a root node of a group to which each of the second radio nodes is ad-hoc connected; the first radio node selects a radio node from the second radio nodes as a first connection-accepting radio node based on a predetermined condition and connects to the first connection-accepting radio node; and in the case where the first radio node reselects a radio node to be a second connection-accepting radio node after the connection between the first radio node and the first connection-accepting radio node is disconnected, the first node selects a radio node as the second connection-accepting radio node, whose identification information of the root node included in the state information acquired from the radio node is the same as identification information of a root node of a group to which the first radio node is ad-hoc connected and connects to the second connection-accepting radio node. - View Dependent Claims (2, 3)
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4. A radio node apparatus in a multi-hop radio system including a plurality of radio nodes among which are ad-hoc connected in a tree structure and carry out multi-hop communication, the radio node apparatus comprising:
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a transmission unit that transmits a request of acquiring state information including identification information of a root node of a group to which each of other radio nodes is ad-hoc connected from the other radio nodes other than a subject node as the radio node apparatus among the plurality of radio nodes; a reception unit that receives the state information from the other radio nodes; a control unit that selects a radio node from the other radio nodes as a first connection-accepting radio node based on a predetermined condition and connects to the first connection-accepting radio node and, in the case of reselecting a radio node to be a second connection-accepting radio node after the connection between the subject node and the first connection-accepting radio node is disconnected, selects a radio node as the second connection-accepting radio node, whose identification information of the root node included in the state information acquired from the radio node is the same as identification information of a root node of a group to which the subject node is ad-hoc connected and connects to the second connection-accepting radio node. - View Dependent Claims (5, 6)
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Specification