System and method for communicating biological signal data

A method for communicating biological signal data between a measurement apparatus and a receiver apparatus which are communicatively connected in a wireless manner, the method comprising:

• obtaining the biological signal data from a detector attached on a living body;
• preparing a data packet from the biological signal data;
• calculating a first cyclic redundancy check of the biological signal data;
• appending the first cyclic redundancy check to the data packet;
• transmitting periodically the data packet with the first cyclic redundancy check from the measurement apparatus to the receiver apparatus;
• receiving the data packet at the receiver apparatus;
• calculating a second cyclic redundancy check of the received data packet;
• verifying the received data packet when the second cyclic redundancy check is coincident with the first cyclic redundancy check;
• transmitting acknowledgement data from the receiver apparatus to the measurement apparatus when the received data packet is verified;
• retransmitting the data packet from the measurement apparatus to the receiver apparatus when the acknowledgement data is not received at the measurement apparatus within a prescribed time period from a previous transmission of the data packet;
• checking to determine if the number of transmissions exceed a prescribed value;
• storing the data packet in a storage when the number of retransmission of the data packet exceeds a prescribed value.

A measurement apparatus, communicatively connected to a receiver apparatus in a wireless manner, comprising:

• a detector that is adapted to be attached on a living body to obtain biological signal data;
• a storage;
• a communicator that periodically transmits the biological signal data as a data packet to the receiver apparatus and that receives , from the receiver apparatus, acknowledgement data indicative of a receipt of the data packet at the receiver apparatus;
• an appender that calculates a cyclic redundancy check of the biological signal data and appends the cyclic redundancy check to the data packet;
• and
• a controller that causes the communicator to retransmit the data packet when the communicator does not receive the acknowledgement data within a prescribed time period from a previous transmission of the data packet, and stores the data packet in the storage when the number of retransmission of the data packet exceeds a prescribed value.

A system for communicating biological signal data, comprising:

• at least one measurement apparatus, comprising a detector, adapted to be attached on a living body to obtain the biological signal data;
• and
• a receiver apparatus, communicatively connected to the at least one measurement apparatus in a wireless manner, wherein:
• the measurement apparatus further comprises:
• a storage;
• first communication means for periodically transmitting the biological signal data as a data packet to the receiver apparatus, and for receiving acknowledgement data from the receiver apparatus;
• and
• first calculation means for calculating a first cyclic redundancy check of the biological signal data and appends the first cyclic redundancy check to the data packet;
• the receiver apparatus comprises:
• second communication means for receiving the data packet from the measurement apparatus, and for transmitting, to the measurement apparatus, acknowledgement data indicative of a receipt of the data packet;
• second calculation means for calculating a second cyclic redundancy check of one of the data packet received by the second communication means to verify the data packet when the second calculated cyclic redundancy check is coincident with the first cyclic redundancy check of the data packet;
• and
• first control means for causing the second communication means to transmit the acknowledgement data to the measurement apparatus when the data packet is verified,
• the measurement apparatus further comprises:
• second control means for causing the first communication means to retransmit the data packet when the first communication means does not receive the acknowledgement data within a prescribed time period from a previous transmission of the one of the data packets, and for checking to determine if the number of transmissions exceed a prescribed value and for storing the data packet in the storage when the number of retransmission of the data packet exceeds a prescribed value.

A measurement apparatus, communicatively connected to a receiver apparatus in a wireless manner, comprising:

• a detector, adapted to be attached on a living body to obtain biological signal data;
• a storage;
• communication means for periodically transmitting the biological signal data as a data packet to the receiver apparatus, and for receiving, from the receiver apparatus, acknowledgement data indicative of a receipt of the data packet at the receiver apparatus;
• calculation means for calculating a cyclic redundancy check of the biological signal data and appends the cyclic redundancy check to the data packet;
• and
• control means for causing the communication means to retransmit the data packet when the communication means does not receive the acknowledgement data within a prescribed time period from a previous transmission of the data packet, and for checking to determine if the number of transmissions exceed a prescribed value and storing the data packet in the storage when the number of retransmission of the data packet exceeds a prescribed value.