WIRELESS DATA COMMUNICATION METHOD AND WIRELESS DATA COMMUNICATION SYSTEM

• US 20090290525A1
• Filed: 05/21/2008
• Published: 11/26/2009
• Est. Priority Date: 05/21/2008
• Status: Active Grant

• Current Assignee: Wristop Technologies Oy
• Original Assignee: Wristop Technologies Oy
• Inventors: Kaltto, Mikko, KORHONEN, OSSI, KEKALAINEN, PANU
• Granted Patent: US 8,102,796 B2
• Time in Patent Office: Days
• US Class Current: 370/313
• CPC Class Codes: A61M 2205/3523 using telemetric means
• CPC Class Codes: A61M 2205/3561 local, e.g. within room or hospital
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2205/8212 with means or measures taken for minimising energy consumption
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: G16H 40/67 for remote operation
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The invention relates to a method for transmitting and receiving data packets between a master device (31) and at least one slave device (32, 33, 34, 35) using a synchronized data communication protocol. In the method, a time period to be used between consecutive packets to be transmitted to the master device (31) is defined, on the basis of the calculated number of data packets received by the master device (31) in a predetermined time period. The invention further relates to a wireless data communication system, a master device (31), and a slave device (32, 33, 34, 35), comprising wireless data communication means (22) for transmitting and receiving data packets between the devices (31,32, 33, 34, 35) using a synchronized data communication protocol. In the protocol, the time period to be used between consecutive packets to be transmitted is defined on the basis of the calculated number of data packets received by the master device (31) in a predetermined time period.

Claims

1. A wireless data communication system comprising:

a master device comprising wireless data communication means for transmitting and receiving data packets between the master device and at least one slave device using a synchronized data communication protocol,

at least one slave device comprising wireless data communication means for transmitting and receiving data packets between the master device and at least one slave device using the synchronized data communication protocol,

characterised in that the system comprises means for

defining a first time period between consecutive packets to be transmitted,

defining a second time period for calculating the number of packets received by the master device during the second time period,

calculating the number of data packets received by the master device in the predetermined second time period, wherein

if the calculated number of packets is smaller than a first threshold value the first time period is decreased, and

if the calculated number of packets is larger than a second threshold value the first time period is increased.

2. The wireless data communication system according to claim 1, characterised in that the master device is a controlled device or a measuring device.

3. The wireless data communication system according to claim 1, characterised in that the slave device is a controlled device or a measuring device.

4. The wireless data communication system according to claim 1, characterised in that the master device defines communication times for the transmission of the data packets.

5. The wireless data communication system according to claim 1, characterised in that the first threshold value is a determined number of packets to be received by the master device in the predetermined second time period.

6. The wireless data communication system according to claim 1, characterised in that the second threshold value is a determined number of packets to be received by the master device in the predetermined second time period.

7. The wireless data communication system according to claim 1, characterised in that a large data packet is divided into smaller packets and be transmitted by using a time period shorter than the first time period.

8. The wireless data communication system according to claim 1, characterised in that the slave device is defined to be the master device.

9. A master device comprising:

wireless data communication means for transmitting and receiving data packets between the master device and at least one slave device using a synchronized data communication protocol,

characterised in that the master device comprises means for

defining a first time period between consecutive packets to be transmitted to the master device,

transmitting information on the first time period to the slave device,

defining a second time period for calculating the number of packets received by the master device during the second time period,

defining of the number of data packets to be received by the master device in the predetermined second time period,

calculating the number of data packets received by the master device in the predetermined second time period, wherein

if the calculated number of packets is smaller than a first threshold value the first time period is decreased, and

if the calculated number of packets is larger than a second threshold value the first time period is increased, and

transmitting the information on the first time period to the slave device if the first time period is changed.

10. The master device according to claim 9, characterised in that the master device is a controlled device or a measuring device.

11. The master device according to claim 9, characterised in that the master device defines communication times for the transmission of the data packets.

12. The master device according to claim 9, characterised in that the first threshold value is a defined number of packets to be received by the master device in the predetermined second time period.

13. The master device according to claim 9, characterised in that the second threshold value is the defined number of packets to be received by the master device in the predetermined second time period.

14. A slave device comprising:

wireless data communication means for transmitting and receiving data packets between a master device and a slave device using a synchronized data communication protocol,

characterised in that the slave device comprises means for

receiving information on a first time period between consecutive data packets to be transmitted to the master device from the slave device, and

adjusting the transmission period of consecutive data packets on the basis of the information on the first time period.

15. The slave device according to claim 14, characterised in that the slave device is a controlled device or a measuring device.

16. A method for a wireless data communication comprising:

transmitting and receiving data between a master device and at least one slave device using a synchronized data communication protocol,

characterised in that the method further comprises;

defining a first time period between consecutive packets to be transmitted to the master device,

defining a second time period for calculating the number of packets received by the master device during the second time period,

calculating the number of data packets received by the master device in the predetermined second time period, wherein

if the calculated number of packets is smaller than a first threshold value the first time period is decreased, and

if the calculated number of packets is larger than a second threshold value the first time period is increased.

17. The method for a wireless data communication according to claim 16, characterised in that the master device is a controlled device or a measuring device.

18. The method for a wireless data communication according to claim 16, characterised in that the slave device is a controlled device or a measuring device.

19. The method for a wireless data communication according to claim 16, characterised in that the master device defines communication times for the transmission of the data packets.

20. The method for a wireless data communication according to claim 16, characterised in that the first threshold value is a determined number of packets to be received by the master device in the predetermined second time period.

21. The method for a wireless data communication according to claim 16, characterised in that the second threshold value is a determined number of packets to be received by the master device in the predetermined second time period.

22. The method for a wireless data communication according to claim 16, characterised in that a large data packet is divided into smaller packets and transmitted by using a time period shorter than the first time period.

23. A method for a master device comprising:

transmitting and receiving data between the master device and at least one slave device using a synchronized data communication protocol,

characterised in that the method further comprises;

defining a first time period between consecutive packets to be transmitted to the master device,

defining a second time period for calculating the number of packets received by the master device during the second time period,

calculating the number of data packets received by the master device in the predetermined second time period, wherein

if the calculated number of packets is smaller than a first threshold value the first time period is decreased, and

if the calculated number of packets is larger than a second threshold value the first time period is increased.

transmitting the information on the first time period to the slave device if the first time period is changed.

24. The method for a master device according to claim 23, characterised in that the master device is a controlled device or a measuring device.

25. The method for a master device according to claim 23, characterised in that the slave device is a controlled device or a measuring device.

26. The method for a master device according to claim 23, characterised in that the master device defines communication times for the transmission of the data packets.

27. The method for a master device according to claim 23, characterised in that the first threshold value is a determined number of packets to be received by the master device in the predetermined second time period.

28. The method for a master device according to claim 23, characterised in that the second threshold value is a determined number of packets to be received by the master device in the predetermined second time period.

29. A method for a slave device comprising:

transmitting and receiving data between a master device and the slave device using a synchronized data communication protocol,

characterised in that the method further comprises;

receiving information on a first time period between consecutive data packets to be transmitted to the master device, and

adjusting the transmission period of consecutive data packets on the basis of the information on the first time period.

30. The method for a master device according to claim 29, characterised in that the slave device is a controlled device or a measuring device.