Low Energy Sensor Advertisement Packet Segmentation
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Solution Overview
Problem
Bluetooth Low Energy (BLE) devices face limitations in data transmission due to the small payload size of advertisement packets, which restricts the amount of substantive information that can be broadcasted without pairing, and older devices cannot discover extended advertisements, making it necessary to utilize the existing 31-byte architecture for legacy compatibility.
Innovation Solution
A method for low-energy sensing that involves placing a sensor in a listening mode, receiving a wake-up request, detecting parameters, generating and broadcasting advertisement packets with enhanced data capacity using a scheme that allocates bytes for unique IDs and sensor data, and alternating between 'even' and 'odd' packets to maximize data transfer without requiring pairing or upgrading to Bluetooth 5.0 compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If advertisement packet size is limited to 37 bytes as in Bluetooth 4.0, then backward compatibility with legacy devices is maintained, but the amount of substantive data that can be transmitted is insufficient
Solution Approach 1:
The patent segments the advertisement packet into multiple 37-byte packets, where each packet contains a portion of the substantive data. The first packet includes a counter field indicating the total number of packets, and subsequent packets continue the data transmission. This segmentation allows legacy devices to receive the first packet (maintaining compatibility) while newer devices can receive and reassemble multiple packets to obtain the complete data set (increasing transmission capacity).
Solution Approach 2:
The patent introduces dynamic packet counting and data assembly mechanisms where the receiving device can determine whether to continue receiving additional packets based on the counter field in the first packet. This dynamic approach allows the system to adapt between transmitting minimal data (for legacy compatibility) and transmitting extensive data (for enhanced capability devices) based on the receiver's abilities.
2Quantity of substance
If pairing or connection is established to transmit substantive data, then data transmission capacity is sufficient, but power consumption increases
Solution Approach 1:
The patent enables partial data transmission through advertisement packets without requiring full pairing or connection establishment. By transmitting substantive data (exceeding the traditional advertising purpose) directly in the advertisement packet, the system achieves sufficient data transmission capacity while avoiding the high power consumption associated with complete pairing procedures. The counter field mechanism allows receivers to know when complete data has been transmitted without requiring ongoing connected communication.
3Productivity
If advertising packets are broadcast frequently to transmit more data, then data transmission rate increases, but power consumption increases
Solution Approach 1:
The patent uses periodic advertising intervals to broadcast segmented data packets rather than continuous transmission. Each advertisement packet includes counter information allowing receivers to track data receipt. This periodic approach maintains data transmission rate by systematically delivering data in manageable segments while significantly reducing power consumption compared to continuous broadcasting, as the sensor can enter low-power states between advertisement intervals.
Data Source
AI summary
A low energy sensor and method to implement thereof are provided. The sensor may be a Bluetooth Low Energy (BLE) compatible sensor. The sensor may include a processor coupled to a communicator and a memory. The processor may be configured to place the sensor in a listening mode such that while in the listening mode, the sensor does not transmit or broadcast any data unless the sensor receives a wake-up request. Upon receiving the wake-up request, the sensor may be configured to detect a first parameter, generate an advertisement packet including the first parameter, broadcast the advertisement packet, and broadcast the wake-up request to any additional devices or sensors that may be in a vicinity of the sensor.