Radio communication apparatus, ad-hoc system and communication system
First Claim
1. A radio communication apparatus having ad-hoc communication means for building an ad-hoc network with other nearby radio communication apparatus and performing communication with the other radio communication apparatus by radio, wherein a radio communication apparatus that manages the entire ad-hoc network is a master and a radio communication apparatus that performs radio communication within the ad-hoc network under the management of the master is a slave, and wherein the ad-hoc communication means comprises:
- node type setting means for searching the ad-hoc network for the master and setting the node type of the radio communication apparatus to any of the master and slave on the basis of the search result;
set-up information acquisition means for, when the node type of the radio communication apparatus is set to the slave, transmitting and receiving control signals to and from the master to acquire set-up information required for communication with any of the master and slave in the ad-hoc network and storing the set-up information in storage means; and
data signal transmission means for directly transmitting and receiving data signals to and from any of the master and slave in the ad-hoc network in accordance with the set-up information acquired from the master.
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Accused Products
Abstract
An object of the present invention is to improve the network usage efficiency and economy. There is provided a radio communication apparatus (10) having ad-hoc communication means for building an ad-hoc network with other nearby radio communication apparatus and performing communication with the other radio communication apparatus by radio. The ad-hoc communication means comprises: node type setting means for searching the ad-hoc network for the master and setting the node type of the radio communication apparatus (10) to any of the master and slave on the basis of the search result; set-up information acquisition means for, when the node type of the radio communication apparatus (10) is set to the slave, transmitting and receiving control signals to and from the master to acquire set-up information required for communication with any of the master and slave in the ad-hoc network and storing the set-up information in storage means; and data signal transmission means for directly transmitting and receiving data signals to and from any of the master and slave in the ad-hoc network in accordance with the set-up information acquired from the master.
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Citations
19 Claims
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1. A radio communication apparatus having ad-hoc communication means for building an ad-hoc network with other nearby radio communication apparatus and performing communication with the other radio communication apparatus by radio,
wherein a radio communication apparatus that manages the entire ad-hoc network is a master and a radio communication apparatus that performs radio communication within the ad-hoc network under the management of the master is a slave, and wherein the ad-hoc communication means comprises: -
node type setting means for searching the ad-hoc network for the master and setting the node type of the radio communication apparatus to any of the master and slave on the basis of the search result;
set-up information acquisition means for, when the node type of the radio communication apparatus is set to the slave, transmitting and receiving control signals to and from the master to acquire set-up information required for communication with any of the master and slave in the ad-hoc network and storing the set-up information in storage means; and
data signal transmission means for directly transmitting and receiving data signals to and from any of the master and slave in the ad-hoc network in accordance with the set-up information acquired from the master. - View Dependent Claims (2, 3, 4, 18, 19)
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5. An ad-hoc system including a master and slaves, the master being a radio communication apparatus that manages an entire network and the slaves being radio communication apparatuses which perform radio communication under the management of the master,
wherein the master comprises: -
node information collecting means for collecting node information of each slave by transmitting and receiving control signals to and from each slave in the ad-hoc network;
network information updating means for updating network information concerning the ad-hoc network on the basis of the collected node information of each slave and storing the updated network information in storage means;
set-up information transmitting means for, in response to a communication request from a slave in the ad-hoc network, allocating network resources on the basis of the network information stored in the storage means and transmitting set-up information in which the allocation of the network resources is specified to the slave that has issued the communication request; and
network information delivery means for delivering the network information to each slave in the ad-hoc network, and wherein the slave comprises;
storage means for storing network information acquired from the master;
set-up information acquisition means for, when the slave intends to initiate communication with any of the master and other slave in the ad-hoc network, transmitting a communication request to the master to acquire the set-up information; and
data signal transmission means for transmitting and receiving data signals to and from any of the master and other slave in the ad-hoc network in accordance with the set-up information and the network information acquired from the master. - View Dependent Claims (6)
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7. A communication system in which TDD-CDMA system is used for communication between a base station of a mobile communications network and a radio communication apparatus that acts as a mobile station;
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wherein the radio communication apparatus has ad-hoc communication means for building an ad-hoc network with other nearby radio communication apparatus and performing communication with the other radio communication apparatus by radio, and uses the same TDD-CDMA system and the same frequency band that are used in the mobile communications network, and wherein the radio communication apparatus includes, as radio interfaces, a first interface for performing communication with the base station, a second interface for performing communication with other radio communication apparatus in the ad-hoc network, and a third interface for relaying communication between other radio communication apparatus in the ad-hoc network and the base station;
the radio communication apparatus is configured to be capable of connecting to an authentication server of an IP network as a client; and
the authentication server has an interface for performing communication with a home location register of the mobile communications network.
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8. A communication system comprising:
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a base station of a mobile communications network;
a radio communication apparatus which performs communication with the base station by using TDD-CDMA system;
a management equipment which, when the radio communication apparatus attempts to access the mobile communications network, receives user information of the radio communication apparatus via the base station and validates a user of the radio communication apparatus on the basis of the user information; and
an authentication server which is incorporated in an IP network;
wherein the radio communication apparatus comprises ad-hoc communication means for building an ad-hoc network with other nearby radio communication apparatus and performing communication with the other radio communication apparatus by radio, the ad-hoc communication means using, in communication with the other radio communication apparatus in the ad-hoc network, the same TDD-CDMA system and the same frequency band that are used in the mobile communications network and having the function of relaying communication between the other radio communication apparatus in the ad-hoc network and the base station;
the radio communication apparatus is configured to be capable of connecting to the authentication server as a client and, when connecting to the IP network through the authentication server, transmits the user information to the authentication server; and
the authentication server has an interface for connecting to the management equipment and, upon receiving the user information from the radio communication apparatus, validates the user in cooperation with the management equipment, and when the user is successfully authenticated as a result of the validation, permits the radio communication apparatus to connect to the IP network.
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9. A radio communication apparatus which builds an ad-hoc network with other nearby radio communication apparatus, performs communication with the other radio apparatus by using any of TDD-CDMA, TDD-TDMA, and TDD-OFDM communication systems, and performs communication with a base station of a mobile communications network by using the same communication system and the same frequency band that are used in the communication with the other radio communication apparatus in the ad-hoc network,
the radio communication apparatus comprising: -
relay means for relaying communication between the other radio communication apparatus in the ad-hoc network and the base station; and
radio interfaces including a first interface for performing communication with the base station, a second interface for performing communication with the other radio communication apparatus in the ad-hoc network, and a third interface for relaying communication between the other radio communication apparatus in the ad-hoc network and the base station. - View Dependent Claims (10, 11, 12)
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13. A communication system comprising:
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a base station of a mobile communications network;
a mobile station which performs communication with the base station by using TDD-CDMA system;
a management equipment which, when the mobile station attempts to access the mobile communications network, receives user information of the mobile station via the base station and validates a user of the mobile station on the basis of the user information; and
an authentication server of an IP network based on the TCP/IP, wherein the mobile station is configured to be capable of connecting to the authentication server as a client and, when connecting to the IP network through the authentication server, transmits the user information to the authentication server; and
the authentication server has an interface for connecting to the management equipment and, upon receiving the user information from the mobile station, validates the user in cooperation with the management equipment and, when the user is successfully authenticated as a result of the validation, permits the mobile station to connect to the IP network. - View Dependent Claims (14, 15, 16, 17)
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Specification