Method and system for multi-terminal to multi-terminal communication based on bluetooth

Abstract

The invention provides a method and system for Bluetooth-based multi-end-to-multi-end communication, including: obtaining, through a short-term connection-oriented communication, a UUID of a device that needs to receive private data, corresponding the UUID to a private label according to a private label allocation table and storing the UUID in a mapping table within a broadcast host; and looking-up the mapping table, if data to be sent contains private information targeted for a specific receiving object group, then determining whether encryption is required; if encryption is required, then performing dynamical encryption based on the private label and proceeding to a step of Bluetooth broadcast payload sending; and performing corresponding non-private data hosting encapsulation or private data hosting encapsulation for the data to be sent and broadcasting the data. The invention not only satisfies the Bluetooth low energy specification, but also achieves many-to-many real-time communication, and includes a highly reliable encryption method.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and system for multi-terminal to multi-terminal communication based on bluetooth. In particular, a method and system for multi-terminal to multi-terminal high-reliability communication based on low-power bluetooth. Background technique [0002] At present, low-power Bluetooth on the market is mainly used in one-to-one (referred to as one-to-one) or one-to-many (referred to as one-to-many) communication scenarios between master and slave nodes, but when multi-terminal to many-terminal communication is required (referred to as Many-to-many), you need to use time-sharing one-to-one intermittent polling short-term connection, or combined with active one-to-many (such as GATT protocol) improved intermittent polling short-term connection method to achieve many-to-many communication at the business level And follow the low power consumption design. There are als...

AI Technical Summary

Problems solved by technology

Although the connection-oriented communication method will monopolize the channel with high security, the overhead of this connection and disconnection operation is not only time-consuming, but also brings higher system power consumption overhead.

The simple broadcast communication trigger notification is to trigger a single associated one-way data by associating the ID of the registered broadcast, and there is no substantial load to continuously generate new information transmission, that is, it is not continuous communication in the true sense.

[0004] The more serious defect is that in continuous and disordered many-to-many communication, time-sharing polling cannot efficiently associate pieces of information to be sent with connected and unconnected peer nodes, although theoretically by establishing Send the mapping table to record the successful history of sending and receiving. Considering the variability of the relative displacement between wireless communication nodes and the range of incoming and outgoing signals, this implementation is implemented in the topological structure of five master-slave nodes and above. The more nodes, the more information pieces are sent and received. Continuity, sequence and integrity are worse

The effect of directly initiating payload information transmission through Bluetooth broadcasting is that the broadcasting is extensively sent to all objects within the signal range, and there is no distinction between different receivers and the payload information to be sent.

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