Hybrid communication method and system based on IEEE 802.15.4 and low power consumption Bluetooth dual protocol stacks
A low-power bluetooth, hybrid communication technology, applied in wireless communication, power management, energy reduction and other directions, can solve the problem of small data transmission, increase equipment cost, etc., to save equipment cost, high integration, small size Effect
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[0067] Example 1
[0068] Such as image 3 with Figure 4 As shown, a hybrid communication method based on IEEE 802.15.4 and Bluetooth low energy dual protocol stack is as follows:
[0069] Step 1: The device runs in the 802.15.4 transmission mode by default, and uses the sleep wake-up mechanism to reduce power consumption;
[0070] Step 2: During the wake-up period, the device listens to the channel. If it receives 802.15.4 data, or if there is 802.15.4 data to be sent, it will maintain the 802.15.4 mode for data transmission. According to whether the received data is a single packet or multiple packets, Judge whether the reception is complete; judge whether the transmission is complete according to whether the sent data is a single packet or multiple packets combined with the sending status register;
[0071] Step 3: In the wake-up period, when the 802.15.4 data transmission is completed, the device saves the 802.15.4 protocol stack and network parameters; the system calls the BLE p...
Example Embodiment
[0103] Example 2
[0104] A hybrid communication system based on IEEE 802.15.4 and Bluetooth low energy dual protocol stack. The device is applied to the method of the above-mentioned embodiment 1. It includes a processor and integrates the 802.15.4 protocol and the Bluetooth low energy protocol on the processor. , Protocol stack switching module; the processor communicates with the protocol stack switching module to realize the 802.15.4 transmission mode and the BLE transmission mode;
[0105] The protocol stack switching module is preset with a protocol stack switching cycle, which is in the 802.15.4 protocol stack by default; the protocol stack switching module releases the RAM memory of the original protocol stack according to the switching cycle when there is no data transmission in the current protocol stack mode, and then starts Apply for RAM memory for the new protocol stack, and start the new protocol stack by configuring the RF module registers, and the switching process ...
Example Embodiment
[0106] Example 3
[0107] A hybrid communication system based on IEEE 802.15.4 and Bluetooth low energy dual protocol stack. The device is applied to the method of the above-mentioned embodiment 1. In this embodiment, the wake-up time of the 802.15.4 device is set to 125 milliseconds, and the sleep time Set to 875 milliseconds; the time to transmit a data packet in the 802.15.4 protocol is about 8 milliseconds, while Bluetooth low energy can establish a connection, send data and disconnect within about 3 milliseconds; the 802.15.4 protocol stack and the BLE protocol The switching time of the stack is within the time range of microseconds; therefore, it is possible to switch from the 802.15.4 protocol stack to the BLE protocol stack during at least one 802.15.4 wake-up period, and then switch from the BLE protocol stack back to 802.15.4 Protocol stack is a complete set of protocol stack switching and mixed communication process.
[0108] working principle:
[0109] This embodiment p...
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