Radio communication system, and apparatus, method, and computer program for said radio communication system
First Claim
1. An apparatus for radio communication that operates in a wireless network environment in which there coexist a plurality of wireless networks that use different signal systems, said apparatus for radio communication comprisingcommon signal reception means to receive control information transmitted from one wireless network of said plurality of wireless networks by using a signal system common with a signal system of another wireless network,competition solving means to solve competition with said one wireless network based on control information from said another wireless network that has been received by said common signal reception means,control information generating means to generate the control information of said one network in accordance with a result of a competition solution achieved by said competition solving means, andcommon signal transmission means to transmit the control information in said one network by using a signal system common with a signal system of said another network.
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Abstract
A communication system that permits the coexistent of a plurality of ultrawide band (UWB) radio communication networks that use different signal systems is achieved by using the same beacon signal and specifying the format of part of the control command among a plurality of UWB radio communication networks that use different signal systems, as defined, for example, by impulse period, impulse width, spreading ratio, and spreading code. When one UWB network receives a beacon signal from another UWB network, it grasps, judging from the received beacon signal, the transmission parameter that is used by another party and performs time-division on the transmission frame period for its own system.
58 Citations
9 Claims
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1. An apparatus for radio communication that operates in a wireless network environment in which there coexist a plurality of wireless networks that use different signal systems, said apparatus for radio communication comprising
common signal reception means to receive control information transmitted from one wireless network of said plurality of wireless networks by using a signal system common with a signal system of another wireless network, competition solving means to solve competition with said one wireless network based on control information from said another wireless network that has been received by said common signal reception means, control information generating means to generate the control information of said one network in accordance with a result of a competition solution achieved by said competition solving means, and common signal transmission means to transmit the control information in said one network by using a signal system common with a signal system of said another network.
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6. A method for radio communication that works in a wireless network environment in which there coexist a plurality of wireless networks that use different signal systems, said method for radio communication comprising
a common signal reception step to receive control information transmitted from one wireless network of said plurality of networks by using a signal system common with a signal system of another wireless network, a competition solving step to solve competition with one network based on the control information from said another network that has been received by said common signal reception step, a control information generating step to generate control information of one network in accordance with a result of a competition solution achieved by said competition solving step, and a common signal transmission step to transmit the control information in said one wireless network by using a signal system common with a signal system of said another wireless network.
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7. An apparatus for radio communication that operates in a wireless network environment in which there coexist a plurality of wireless networks that use different signal systems, said apparatus for radio communication comprising
common signal reception means to receive control information transmitted from one wireless network of said plurality of wireless networks by using a signal system common with a signal system of another wireless network of said plurality of wireless networks, radio transmission/reception means to exchange information with another radio communication apparatus within said one wireless network by using the signal system that is used within said one wireless network, and radio transmission/reception control means to control an action for information transmission within said one wireless network based on control information of said another wireless network that has been received by said common signal reception means.
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9. A computer readable memory having stored therein a program written in a computer-readable format to be executed on a computer system that does processing for operation in a wireless network environment in which there coexist a plurality of wireless networks that use different signal systems, said program comprising
a common signal reception step to receive control information transmitted from one wireless network of said plurality of wireless networks by means of a signal system common with a signal system of another wireless network of said plurality of wireless networks, a competition solving step to solve competition with one network based on the control information from said another network that has been received in said common signal reception step, a control information generating step to generate control information of said one network in accordance with a result of a competition solution achieved in said competition solving step, and a common signal transmission step to transmit the control information in said one wireless network by using a signal system common with a signal system of said another wireless network.
Specification