Enhanced data rate low energy wireless communications
In some aspects, the disclosure is directed to methods and systems for an enhanced data rate, low energy wireless communication. Devices may communicate over predetermined wireless bands such as the 2.4 GHz and 5 GHz ISM bands, using π/4-differential quadrature phase shift keying, with physical layer rates of 1, 2, 4, 8 Mbps or higher. Symbol timing may be at any frequency, and may be 256 ns in some implementations. In some implementations, to extend device battery life, devices may use a low latency reconnect mechanism allowing frequent hibernation or shutdown of transmitters and/or carriers.
1. A system for wireless communications, comprising:
a first device comprising wireless communications circuitry configured to:
in a first state, broadcast a first triggering command, the first triggering command instructing a second device to broadcast a first connection advertisement response for establishing first data communications with the second device and monitor a wireless communication medium for the first connection advertisement response from the second device;
in response to receiving the first connection advertisement response from the second device within a predetermined time period, initiate the first data communications with the second device according to the first connection advertisement response; and
in response to not receiving the first connection advertisement response from the second device within the predetermined time period, in a second state, monitor the wireless communication medium for a second triggering command broadcast by another device, the second triggering command instructing the first device to broadcast a second connection advertisement response for establishing second data communications with the first device.
2. The system of claim 1 , wherein the wireless communications circuitry is further configured to, in response to receiving the first connection advertisement response from the second device within the predetermined time period, initiate the first data communications with the second device by performing a connection establishment protocol via the wireless communication medium, according to the first connection advertisement response.
3. The system of claim 1 , wherein the wireless communications circuitry is further configured to, in response to receiving the first connection advertisement response from the second device within the predetermined time period, initiate the first data communications with the second device by monitoring the wireless communication medium for a connectionless data transmission, according to the first connection advertisement response.
4. The system of claim 3 , wherein the wireless communications circuitry is further configured to receive the connectionless data transmission without transmitting an acknowledgement via the wireless communication medium.
5. The system of claim 1 ,
wherein, in the first state, the first device is a master of the first data communications and the second device is a slave of the first data communications, and
wherein, in the second state, the first device is a slave of the second data communications and the other device is a master of the second data communications.
6. The system of claim 1 , wherein the wireless communications circuitry further comprises a bitstream processor configured to transmit data via a π/4-differential quadrature phase shift keying.
7. The system of claim 6 , wherein the bitstream processor comprises a first forward error correction encoder configured to perform forward error correction on an input data stream, and a pattern mapper configured to map an output of the forward error correction from the first forward error correction encoder to a patterned mapped bitstream according to a predetermined pattern.
8. The system of claim 7 , wherein the bitstream processor further comprises a second forward error correction encoder configured to receive the pattern mapped bitstream, and provide a packet comprising two forward error correction blocks.
9. A method for wireless communications, comprising:
broadcasting, by wireless communication circuitry of a first device, a first triggering command via a wireless communication medium, the first triggering command instructing a second device to broadcast a first connection advertisement response for establishing first data communications with the second device;
monitoring, by the wireless communication circuitry, the wireless communication medium for the first connection advertisement response from the second device;
in response to receiving the first connection advertisement response from the second device within a predetermined time period, initiating the first data communications, by the wireless communication circuitry, with the second device according to the first connection advertisement response; and
in response to not receiving the first connection advertisement response from the second device within the predetermined time period, monitoring, by the wireless communication circuitry, the wireless communication medium for a second triggering command broadcast by another device, the second triggering command instructing the first device to broadcast a second connection advertisement response for establishing second data communications with the first device.
10. The method of claim 9 , wherein initiating the first data communications with the second device further comprises performing a connection establishment protocol via the wireless communication medium according to the first connection advertisement response, in response to receiving the first connection advertisement response from the second device within the predetermined time period.
11. The method of claim 9 , wherein initiating the first data communications with the second device further comprises monitoring the wireless communication medium for a connectionless data transmission according to the first connection advertisement response, in response to receiving the first connection advertisement response from the second device within the predetermined time period.
12. The method of claim 11 , wherein monitoring the wireless communication medium for the connectionless data transmission further comprises receiving the connectionless data transmission without transmitting an acknowledgement via the wireless communication medium.
13. The method of claim 9 , further comprising:
receiving the second triggering command broadcast by the other device; and
responsive to receipt of the second triggering command, broadcasting the second connection advertisement response for establishing second data communications via the wireless communication medium.
14. The method of claim 9 , further comprising transmitting, by a bitstream processor of the first device, data via a π/4-differential quadrature phase shift keying.
15. The method of claim 14 , further comprising performing forward error correction, by the bitstream processor, on an input data stream; and mapping, by the bitstream processor, an output of the forward error correction to a patterned mapped bitstream according to a predetermined output pattern.
16. The method of claim 15 , further comprising performing a second forward error correction on the patterned mapped bitstream to generate a packet comprising two forward error correction blocks.
17. A system for wireless communications, comprising:
a first device comprising wireless communications circuitry configured to:
in a first state, monitor a wireless communication medium for a first triggering command transmitted by a second device, the first triggering command instructing the first device to transmit a first connection advertisement response for establishing first data communications with the first device;
responsive to receipt of the first triggering command within a predetermined time period, transmit the first connection advertisement response to a second device via the wireless communication medium, receipt of the first connection advertisement response causing the second device to initiate the first data communications with the first device according to the first connection advertisement response; and
responsive to not receiving the first triggering command within the predetermined time period, broadcast a second triggering command instructing another device to broadcast a second connection advertisement response for establishing second data communications with the other device.
18. The system of claim 17 , wherein the wireless communications circuitry is further configured to utilize π/4-differential quadrature phase shift keying for the first data communications with the second device.
19. The system of claim 17 , wherein the wireless communications circuitry is further configured to transmit data in a connectionless state to the second device.
20. The system of claim 19 , wherein the wireless communications circuitry is further configured to transmit data in the connectionless state, responsive to not receiving a connection establishment request from the second device within a predetermined period.