Communication system, a communication device and a method for performing communication
First Claim
1. A communication system comprising devices having means for short range communication using a certain frequency band, which is divided into communication channels, wherein some of said communication channels are predefined for establishment of the connection and other communication channels are predefined for data transfer between at least two devices, wherein for informing the services of the devices to the communication system the devices comprise means to transmit at intervals in a communication channel for the establishment of the connection, and that each transmission is proceeded by a receiving period during which the device can be connected to the communication system.
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Abstract
The present invention relates to a communication system comprising devices (2a-2d) having means for short range communication using a certain frequency band. The frequency band is divided into communication channels. In the communication system some of said communication channels are predefined for establishment of the connection and other communication channels are predefined for data transfer between at least two devices. The present invention also relates to a communication device for communication in a communication system, the device having means for short range communication using a certain frequency band, which is divided into communication channels. The present invention further relates to a method for performing communication in a communication system comprising devices, which have means for short range communication using a certain frequency band, which is divided into communication channels.
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Citations
15 Claims
- 1. A communication system comprising devices having means for short range communication using a certain frequency band, which is divided into communication channels, wherein some of said communication channels are predefined for establishment of the connection and other communication channels are predefined for data transfer between at least two devices, wherein for informing the services of the devices to the communication system the devices comprise means to transmit at intervals in a communication channel for the establishment of the connection, and that each transmission is proceeded by a receiving period during which the device can be connected to the communication system.
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10. A communication device for communication in a communication system, the device having means for short range communication using a certain frequency band, which is divided into communication channels, wherein some of said communication channels are predefined for establishment of the connection and other communication channels are predefined for data transfer between at least two devices, wherein the device comprises means to use a predefined establishment communication channel for establishment of the connection, and a predefined data transfer communication channel for transferring data between said device and another device wherein for informing the services of the devices to the communication system the devices comprise means to transmit at intervals in a communication channel for the establishment of the connection, and that each transmission is proceeded by a receiving period during which the device can be connected to the communication system.
- 11. A method for performing communication in a communication system comprising devices, which have means for short range communication using a certain frequency band, which is divided into communication channels, wherein some of said communication channels are predefined for establishment of the connection and other communication channels are predefined for data transfer between at least two devices, wherein for informing the services of the devices to the communication system a transmission is performed at intervals in a communication channel for the establishment of the connection, and that each transmission is proceeded by a receiving period during which the device can be connected to the communication system.
Specification