Synchronizing physiological measurement data streams

A method in a peripheral device of a physiological performance measurement system, the method comprising:

• initiating detection of timing signals on a predetermined radio channel, wherein the peripheral device is configured to perform measurements with respect to a user and to transmit physiological measurement data on the user to a collector device;
• in response to detecting a timing signal broadcasted by the collector device, including an information element, indicative of a clock value of the peripheral device at a time instant at which the broadcasted timing signal has been detected by the peripheral device, into a data packet to be transmitted during a transmission window;
• and
• transmitting the data packet to the collector device during the transmission window, the data packet comprising the physiological measurement data and a time stamp indicating timing of the physiological measurement data.

A collector device of a physiological performance measurement system, the collector device comprising:

• a control circuitry;
• and
• a wireless communication circuitry, wherein the control circuitry is configured, together with the wireless communication circuitry, to perform operations comprising:
• broadcasting a timing signal on a predetermined radio channel;
• receiving a data packet from each of a plurality of peripheral devices configured to perform measurements with respect to one or more users and to transmit physiological measurement data on the one or more users to the collector device, wherein the data packet indicates a clock value of the respective peripheral device, the clock value indicating a time instant at which the broadcasted timing signal has been detected by the respective peripheral device, and wherein the data packet further comprises a time stamp indicating timing of the physiological measurement data;
• and
• synchronizing data streams from the plurality of peripheral devices with each other based on the indicated clock values.

A peripheral device of a physiological performance measurement system, the peripheral device comprising:

• a control circuitry;
• and
• a wireless communication circuitry, wherein the control circuitry is configured, together with the wireless communication circuitry, to perform measurements with respect to a user and to transmit physiological measurement data on the user to a collector device, and to perform operations comprising:
• initiating detection of timing signals on a predetermined radio channel;
• in response to detecting a timing signal broadcasted by the collector device, including an information element, indicative of a clock value of the peripheral device at a time instant at which the broadcasted timing signal has been detected by the peripheral device, into a data packet to be transmitted during a transmission window;
• and
• transmitting the data packet to the collector device during the transmission window, the data packet comprising the physiological measurement data and a time stamp indicating timing of the physiological measurement data.