Communication between devices using a wireless communication protocol
A first communication device may communicate wirelessly with a second communication device. The first communication device may include a wireless communication integrated circuit (IC) configured to (i) receive application data from an application controller, (ii) encapsulate the application data in data packets, and (iii) use an antenna to transmit the data packets. In some embodiments, the first and second communication devices may agree on a length of connection intervals, and the first communication device may transmit two or more of the data packets to the second communication device during each of one or more of the connection intervals. In some embodiments, during periods when there is no application data to encapsulate and transmit to the second communication device, the first communication device may transmit a message to the second communication device, and transmitting the message may keep a wireless link between the first and second communication devices active.
1. A first communication device for communicating wirelessly with a second communication device during connection intervals having a length agreed upon by the first and second communication devices, the first communication device comprising:
an application controller configured to generate application data;
an antenna; and
a wireless communication integrated circuit (IC) configured to (i) receive the application data from the application controller, (ii) encapsulate the application data in data packets, (iii) use the antenna to transmit two or more of the data packets to the second communication device during each of one or more of the connection intervals, and (iv) in response to using the antenna to receive from the second communication device an indication that an application being executed by the second communication device is going to the background, use the antenna to transmit to the second communication device a request for an increased connection interval to decrease the data rate, and (v) in response to using the antenna to receive from the second communication device an indication that the application is going to the foreground, use the antenna to transmit a request for a decreased connection interval to increase the data rate.
2. The first communication device of claim 1 , wherein the wireless communication IC is configured to use the antenna to transmit the two or more data packets to the second communication device during each of the one or more connection intervals without waiting for a response that a first of the two or more data packets was received.
3. The first communication device of claim 1 , wherein the wireless communication IC is further configured to use the antenna to transmit a request for a change to the length of the connection intervals to the second communication device.
4. The first communication device of claim 1 , wherein the application controller is further configured to receive one or more raw signals from an analyte sensor and use the one or more raw signals to calculate one or more analyte concentrations, wherein the application data comprises the one or more analyte concentrations.
5. The first communication device of claim 4 , wherein the one or more raw signals include one or one or more analyte measurements and one or more temperature measurements.
6. The first communication device of claim 1 , wherein the wireless communication IC is further configured to, during periods when there is no application data for the wireless communication IC to encapsulate and transmit to the second communication device, use the antenna to transmit a message to the second communication device, and transmitting the message keeps the wireless link between the first and second communication devices active.
7. The first communication device of claim 1 , wherein the wireless communication IC is further configured to use the antenna to transmit to the second communication device a request that the length of the connection intervals be the minimum connection interval permitted by the second communication device.
8. The first communication device of claim 1 , wherein the length of the connection intervals agreed upon by the first and second communication devices is the minimum connection interval permitted by the second communication device.
9. The first communication device of claim 1 , wherein the length of the connection intervals agreed upon by the first and second communication devices is 18.75 ms.
10. The first communication device of claim 1 , wherein the wireless communication IC is further configured to power down wireless communication with the second communication device outside of a period at the start of each connection interval.
11. The first communication device of claim 1 , wherein the wireless communication IC is configured to use the antenna to transmit the two or more of the data packets to the second communication device during a period at the start of each of one or more of the connection intervals.
12. A method for wireless communication between first and second communication devices during connection intervals having a length agreed upon by the first and second communication devices, the method comprising:
using the first communication device to generate application data;
using the first communication device to encapsulate the application data in data packets;
using an antenna of the first communication device to transmit two or more of the data packets during each of one or more of the connection intervals;
using the antenna of the first communication device to receive from the second communication device an indication that an application being executed by the second communication is going to the background;
in response to receiving the indication that the application being executed by the second communication device is going to the background, using the antenna of the first communication device to transmit to the second communication device a request for an increased connection interval to decrease the data rate;
using the antenna of the first communication device to receive from the second communication device an indication that the application being executed by the second communication is going to the foreground; and
in response to receiving the indication that the application being executed by the second communication device is going to the foreground, using the antenna of the first communication device to transmit to the second communication device a request for a decreased connection interval to increase the data rate.
13. The method of claim 12 , further comprising using the antenna of the first communication device to transmit to the second communication device a request that the length of the connection intervals be the minimum connection interval permitted by the second communication device.
14. The method of claim 12 , wherein the length of the connection intervals agreed upon by the first and second communication devices is the minimum connection interval permitted by the second communication device.
15. The method of claim 12 , wherein the length of the connection intervals agreed upon by the first and second communication devices is 18.75 ms.
16. The method of claim 12 , further comprising powering down wireless communication with the second communication device outside of a period at the start of each connection interval.
17. The method of claim 12 , further comprising using the antenna of the first communication device to transmit the two or more of the data packets to the second communication device during a period at the start of each of one or more of the connection intervals.