BLE Packet Header Service ID for AP Power Management

The AP alternates between awake mode and sleep mode in periodic cycles. During awake mode, the AP processes BLE packets and updates filtering information. During sleep mode, the AP conserves power while the low-power coprocessor handles basic BLE packet reception and filtering. This periodic switching resolves the contradiction by allowing the system to achieve both reliable data reception (during awake periods) and reduced power consumption (during sleep periods).

A coprocessor is introduced as an intermediary between the BLE radio and the AP. The coprocessor performs initial packet filtering and extracts filtering information during low-power operation, then transfers relevant data to the AP when it wakes up. This intermediary enables the AP to maintain reliability by receiving only necessary packets while minimizing its awake time, thus reducing power consumption.

The invention extracts filtering information from the packet payload and places it in the packet header instead. This extraction reduces the payload length and allows the information to be processed more efficiently by the receiving device's filter mechanism, which typically checks headers first. The same filtering information serves both as a header field for efficient filtering and as meaningful packet content, thus maintaining flexibility while improving transmission efficiency.

The filtering information written to the BLE packet serves multiple functions: it acts as a filter criterion for the receiving device to determine whether to process the packet, and simultaneously serves as meaningful content that can be used for device identification or service matching. This multi-functionality allows the same data to improve both adaptability (by enabling flexible filtering) and productivity (by reducing unnecessary packet processing).

The coprocessor acts as an intermediary that performs initial packet filtering and detection during low-power operation. It extracts filtering information from incoming packets and compares it against stored criteria, only waking the AP when a matching packet is detected. This intermediary approach maintains high packet detection accuracy (by thoroughly checking packets) while minimizing AP power consumption (by keeping it in sleep mode most of the time).

The system performs preliminary packet filtering and detection actions using the coprocessor before involving the power-hungry AP. The coprocessor pre-processes incoming packets, extracts relevant filtering information, and prepares data for potential AP processing. This preliminary action ensures accurate packet detection while allowing the AP to remain in low-power state, thus resolving the contradiction between detection accuracy and power consumption.