Low power wireless device discovery

• US 9,020,433 B2
• Filed: 10/05/2011
• Issued: 04/28/2015
• Est. Priority Date: 10/05/2011
• Status: Expired due to Fees

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Linde, Joakim
• Primary Examiner(s): Hanidu, Ganiyu A
• Application Number:
  US13/253,939
• Publication Number:
  US 20130090061A1
• Time in Patent Office: 1,301 Days
• Field of Search: 455/41.2, 455 411- 413, 455/414.1, 455/450, 455/574, 455/552.1, 455/39, 455/418
• US Class Current: 455/41.2
• CPC Class Codes: H04L 47/27 Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• 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

An efficient wireless connection protocol is described.

Claims

1. A method of processing signals, comprising:

performing by one or more processors and/or circuits in a Bluetooth low energy (BLE) device;

identifying a set of advertising packet issuance timing parameters;

issuing an advertising packet in accordance with the advertising packet issuance timing parameters; and

modifying the advertising packet issuance timing parameters when the BLE device does not receive a valid connection command in response to the issued advertising packet, the receiving of the packet enabling the BLE device to determine that a device that sent the connection command received and processed the advertising packet.

2. The method according to claim 1, wherein the modifying the advertising issuance timing parameters comprises:

modifying the advertising issuance timing parameters having a range in accordance with

3. The method according to claim 2, wherein the scanInterval and scanWindow are default values of the central device.

4. The method according to claim 2, wherein the scanInterval and scanWindow are updated in accordance with an operation state of the central device.

5. The method according to claim 4, wherein the advInterval value is modified in accordance with the updated values of scanInterval and scanWindow.

6. A wireless peripheral device, comprising:

a Bluetooth low energy (BLE) wireless interface; and

a processor coupled to the BLE wireless interface, the processor arranged to perform operations for;

identifying a set of advertising packet issuance timing parameters;

issuing an advertising packet in accordance with the advertising packet issuance timing parameters, and

modifying the advertising packet issuance timing parameters when the wireless peripheral device does not receive a valid connection command in response to the issued advertising packet, the receiving of the packet enabling the wireless peripheral device to determine that a device that sent the connection command received and processed the advertising packet.

7. The wireless peripheral device according to claim 6, wherein the modifying the advertising issuance timing parameters comprises:

modifying the advertising issuance timing parameters in accordance with

8. The wireless peripheral device according to claim 7, wherein the scanInterval and scanWindow are default values of the central device.

9. The wireless peripheral device according to claim 7, wherein the scanInterval and scanWindow are updated in accordance with an operation state of the central device.

10. The wireless peripheral device according to claim 9, wherein the advInterval value is modified in accordance with the updated values of scanInterval and scanWindow.

11. Non-transitory computer readable medium for storing computer code executable by a processor for processing signals, comprising:

computer code for performing by one or more processors and/or circuits in a Bluetooth low energy (BLE) device;

computer code for identifying a set of advertising packet issuance timing parameters;

computer code for issuing an advertising packet in accordance with the advertising packet issuance timing parameters; and

computer code for modifying the advertising packet issuance timing parameters when the BLE device does not receive a valid connection command in response to the issued advertising packet, the receiving of the packet enabling the wireless peripheral device to determine that a device that sent the connection command received and processed the advertising packet.

12. The computer readable medium according to claim 11, wherein the computer code for modifying the advertising issuance timing parameters comprises:

modifying the advertising issuance timing parameters in accordance with

13. The computer readable medium according to claim 12, wherein the scanInterval and scanWindow are default values of the central device.

14. The computer readable medium according to claim 12, wherein the scanInterval and scanWindow are updated in accordance with an operation state of the central device.

15. The computer readable medium according to claim 14, wherein the advInterval value is modified in accordance with the updated values of scanInterval and scanWindow.