Method and system for multi-channel data transmission to a plurality of subscribers in a bluetooth network
First Claim
1. Method for data transmission, in particular on the basis of the Bluetooth standard, in which data packets can be interchanged by radio by using time slots, the method comprising:
- establishing a first communication channel between a master subscriber and a first slave subscriber;
operating the first communication channel to perform data exchange during a first time slot followed by a first subsequent time slot in which no data exchange occurs;
establishing a second communication channel between the master subscriber and a second slave subscriber;
operating the second communication channel to perform data exchange during a second time slot followed by a second subsequent time slot in which no data exchange occurs, operating the second communication channel including synchronizing the second communication channel to the first communication channel;
wherein synchronizing the second communication channel includes causing data exchange during a specified time slot, the specified time slot determined based upon a time slot in which data exchange occurs in the first communication channel; and
determining a synchronization parameter for synchronization of the second communication channel, the synchronization parameter defining a phase offset between a first data interchange and a second data interchange, the first data interchange between the master subscriber and the first slave subscriber via the first communication channel and the second data interchange between the master subscriber and the second slave subscriber via the second communication channel.
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Abstract
The invention relates to a method for data transmission, in particular on the basis of the Bluetooth standard, in which data packets can be interchanged by radio by means of a timeslot method, in which communication channels are set up between a master subscriber and at least one slave subscriber, at least two communication channels are operated with reduced activity in a first operating mode, such that the data interchange takes place periodically during first time slots which are then followed by second time slots during which no data interchange is intended, a first communication channel, which can be operated in the first operating mode, is synchronized to at least one second communication channel which can be operated in the first operating mode. The invention also relates to a data transmission system which operates on the basis of the Bluetooth method, in particular for carrying out the method according to the invention.
36 Citations
19 Claims
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1. Method for data transmission, in particular on the basis of the Bluetooth standard, in which data packets can be interchanged by radio by using time slots, the method comprising:
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establishing a first communication channel between a master subscriber and a first slave subscriber; operating the first communication channel to perform data exchange during a first time slot followed by a first subsequent time slot in which no data exchange occurs; establishing a second communication channel between the master subscriber and a second slave subscriber; operating the second communication channel to perform data exchange during a second time slot followed by a second subsequent time slot in which no data exchange occurs, operating the second communication channel including synchronizing the second communication channel to the first communication channel; wherein synchronizing the second communication channel includes causing data exchange during a specified time slot, the specified time slot determined based upon a time slot in which data exchange occurs in the first communication channel; and determining a synchronization parameter for synchronization of the second communication channel, the synchronization parameter defining a phase offset between a first data interchange and a second data interchange, the first data interchange between the master subscriber and the first slave subscriber via the first communication channel and the second data interchange between the master subscriber and the second slave subscriber via the second communication channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A data transmission system which is based on the Bluetooth standard, comprising:
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a master subscriber; first and second slave subscribers operable to communicate data packets with the master subscriber by radio using time slots; a first communication channel providing data interchange between the master subscriber and the first slave subscriber; a second communication channel providing data interchange between the master subscriber and the second slave subscriber, the second communication channel performing data exchange during a specified time slot, the specified time slot determined based upon a time slot in which data exchange occurs in the first communication channel; a control device operable to control a setting up of the first and second communication channels as well as a timing of the data interchange between the master subscriber and each of the first and second slave subscribers, the control device being configured to determine synchronization parameters for synchronization of the second communication channel, the synchronization parameters defining a phase offset between a first data interchange and a second data interchange, the first data interchange between the master subscriber and the first slave subscriber via the fist communication channel and the second data interchange between the master subscriber and the second slave subscriber via the second communication channel. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification