Radio node apparatus, multi-hop radio system, and multi-hop radio system constructing method
First Claim
1. A radio node apparatus for use in a tree-structured multi-hop radio system including a plurality of radio node apparatus, at least a portion of which is used as a repeater for carrying out multi-hop communication at layer 2, comprising:
- a storage unit for storing state information, used for constructing said multi-hop radio system, including information for specifying a root radio node apparatus positioned at a summit of said multi-hop radio system, with said radio node apparatus has a connection, and the number of hops from said root ratio node apparatus;
a collection unit for collecting state information transmitted from, of said plurality of radio node apparatus, surrounding radio node apparatus around said radio node apparatus; and
a selection unit for selecting a host connection-accepting radio node apparatus on the basis of the information for specifying said root radio node apparatus and the number of hops included in the collected state information.
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Accused Products
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
28 Claims
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1. A radio node apparatus for use in a tree-structured multi-hop radio system including a plurality of radio node apparatus, at least a portion of which is used as a repeater for carrying out multi-hop communication at layer 2, comprising:
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a storage unit for storing state information, used for constructing said multi-hop radio system, including information for specifying a root radio node apparatus positioned at a summit of said multi-hop radio system, with said radio node apparatus has a connection, and the number of hops from said root ratio node apparatus;
a collection unit for collecting state information transmitted from, of said plurality of radio node apparatus, surrounding radio node apparatus around said radio node apparatus; and
a selection unit for selecting a host connection-accepting radio node apparatus on the basis of the information for specifying said root radio node apparatus and the number of hops included in the collected state information. - View Dependent Claims (2, 3, 4, 5)
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- 6. A tree-structured multi-hop radio system including a plurality of radio node apparatus, at least a portion of which is used as a repeater for carrying out multi-hop communication at layer 2, wherein each of said radio node apparatus stores, in a predetermined storage region, state information, used for constructing said multi-hop radio system, including information for specifying a root radio node apparatus positioned at a summit of said multi-hop radio system, with which it has a connection, and the number of hops from said root ratio node apparatus, and collects state information transmitted from surrounding radio node apparatus around it, and selects a host connection-accepting radio node apparatus on the basis of the information for specifying said root radio node apparatus and the number of hops included in the collected state information.
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11. A method of constructing a tree-structured multi-hop radio system including a plurality of radio node apparatus, at least a portion of which is used as a repeater for carrying out multi-hop communication at layer 2, comprising:
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a step in which, for selecting a host connection-accepting radio node, an arbitrary radio node apparatus of said plurality of radio node apparatus broadcasts a state information acquiring request to said plurality of radio node apparatus, other than said arbitrary radio node apparatus, each of which has state information including the total number of radio node apparatus connected to a tree-structured group with which each of the plurality of radio node apparatus has a connection, the number of hops from a root node positioned at a summit of said tree-structured group, identification information on said root node and its own identification information;
a step in which said arbitrary radio node apparatus of said plurality of radio node apparatus receives said state information from said plurality of radio node apparatus other than said arbitrary radio node apparatus; and
a step in which said arbitrary radio node apparatus of said plurality of radio node apparatus makes a comparison between the total number of radio node apparatus included in the received state information and the total number of radio node apparatus included in its own state information to select the radio node apparatus having said state information including the total number of radio node apparatus larger than the total number of radio node apparatus included in its own state information for selecting and connecting, of the selected radio node apparatus, the radio node apparatus having the smallest number of hops included in said state information as said host connection-accepting radio node apparatus. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A radio node apparatus for use in a tree-structured multi-hop radio system including a plurality of radio node apparatus, at least a portion of which is used as a repeater for carrying out multi-hop communication at layer 2, said radio node apparatus comprising:
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a transmission unit for broadcasting a state information acquiring request, used for section of a host connection-accepting radio node apparatus, to said plurality of radio node apparatus, other than said radio node apparatus, each of which has state information including the total number of radio node apparatus connected to a tree-structured group with which each of said plurality of radio node apparatus has a connection, the number of hops from a root node positioned at a summit of said tree-structured group, identification information on said root node and its own identification information;
a reception unit for receiving the state information from said plurality of radio node apparatus other than it; and
a control unit for making a comparison between the total number of radio node apparatus included in the received state information and the total number of radio node apparatus included in its own state information to select the radio node apparatus having the state information including the total number of the radio node apparatus larger than the total number of radio node apparatus included in its own state information and further to select and connect, of the selected radio node apparatus, the radio node apparatus having the smallest number of hops included in the state information as said host connection-accepting radio node apparatus. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification