Systems, devices, and methods for wireless communications in analyte monitoring systems

An in vivo analyte monitoring system, comprising:

• a handheld relay device, comprising wireless communication circuitry adapted to receive, according to a Bluetooth or Bluetooth Low Energy (BTLE) protocol, data indicative of a sensed analyte level from a sensor control device and transmit, according to the Bluetooth or BTLE protocol, the data indicative of the sensed analyte level to a reader device;
• and
• the reader device comprising wireless communication circuitry adapted to receive, according to the Bluetooth or BTLE protocol, the data indicative of the sensed analyte level from the handheld relay device, wherein the handheld relay device is configured to monitor its operation for an occurrence
• of one or more predetermined failure conditions and transmit a command to the reader device to output an alarm on the reader device.

A method of communicating data within an in vivo analyte monitoring system, the method comprising:

• wirelessly receiving at a handheld relay device, according to a Bluetooth or Bluetooth Low Energy (BTLE) protocol, data from a sensor control device, wherein the data is indicative of an analyte level sensed within a human body;
• monitoring, by the handheld relay device, operation of the handheld relay device for an occurrence of one or more predetermined failure conditions;
• and
• wirelessly transmitting a command from the handheld relay device to a reader device to output an alarm on the reader device according to the Bluetooth or BTLE protocol.