Method of creating and managing session between wireless universal serial bus host and wireless universal serial bus device and providing wireless universal serial bus host and wireless universal serial bus device

• US 8,601,137 B2
• Filed: 12/04/2007
• Issued: 12/03/2013
• Est. Priority Date: 12/28/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kong, Ji-young, Ye, Kyung-wook, Chae, Jong-woo, Kim, Min-soo, Kim, Hyeong-seok, Kim, Jung-wook
• Primary Examiner(s): HOANG, HIEU T
• Application Number:
  US11/949,910
• Publication Number:
  US 20080162742A1
• Time in Patent Office: 2,191 Days
• Field of Search: 709/227, 709/228, 709/223, 709/224
• US Class Current: 709/228
• CPC Class Codes: H04L 41/06 Management of faults, events, alarms or notifications
• CPC Class Codes: H04L 41/22 comprising specially adapted graphical user interfaces [GUI]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/145 avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
• CPC Class Codes: H04L 67/146 Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Provided is a session management method of managing a session created between a wireless universal serial bus (USB) host and a wireless USB device through a wireless network, the session management method including: receiving session status messages periodically transmitted for checking a status of the created session; counting a number of continuous reception failures representing a number of the session status messages that are not received; and if the number of the continuous reception failures of session status messages is greater than a reference number, changing the current status of the session to a suspended status if the current status of the session is a connected status, and closing the created session if the current status of the session is a suspended status.

Claims

1. A session management method of managing a session created between a wireless Universal Serial Bus (USB) host and a wireless USB device through a wireless network, the session management method comprising:

receiving session status messages periodically to check a status of the created session, wherein the session status messages indicate whether the created session is active;

changing a current status of the created session from a connected status to a suspended status if the current status of the created session is the connected status when a number of continuous reception failures corresponding to a number of the session status messages that are not received reaches a first reference number; and

terminating the created session if the current status of the created session is the suspended status when the number of the continuous reception failures reaches a second reference number,

wherein the created session is a wireless USB session;

wherein the session status messages are received periodically to check the status during the entire created session; and

wherein the suspended status allows a session to be restarted without creating a new session.

2. The session management method as claimed in claim 1, further comprising terminating the created session when a session close message including an instruction to close the created session is received.

3. The session management method as claimed in claim 1, further comprising changing the current status of the created session from the suspended status to the connected status when one of the session status messages is received while the current status of the created session is the suspended status.

4. The session management method as claimed in claim 1, further comprising deleting session information about the created session when the created session is closed.

5. The session management method as claimed in claim 4, wherein the session information comprises a session identification (ID), or an Internet Protocol (IP) address, or the current status of the created session, or any combination thereof.

6. The session management method as claimed in claim 1, further comprising transmitting a session close message including an instruction to close the created session when the created session is desired to be closed.

7. The session management method as claimed in claim 1, wherein the wireless network is a mobile ad hoc network.

8. The session management method as claimed in claim 1, wherein the USB device receives the session status messages, changes the current status, and closes the created session.

9. The session management method as claimed in claim 1, wherein the USB host receives the session status messages, changes the current status, and closes the created session.

10. The session management method as claimed in claim 1, wherein the first reference number is N and the second reference number is 2N.

11. A non-transitory computer-readable recording medium encoded with instructions for controlling a computer to perform the method of claim 1.

12. The session management method as claimed in claim 1, wherein each of the session status messages comprises session status information indicating whether the created session is active.

13. The session management method as claimed in claim 1, wherein each of the session status messages comprises a session status bitmap comprising a bit indicating whether the created session is active.

14. The session management method as claimed in claim 1, wherein the session status messages are periodically transmitted after the session is created.

15. The session management method as claimed in claim 1, wherein the session status messages that are not received when the current status of the created session is the connected status indicate that the created session is active;

and

the session status messages that are not received when the current status of the created session is the suspended status indicate that the created session is inactive.

16. The session management method as claimed in claim 1, wherein the status of the created session is checked when the created session is active.

17. A wireless USB host for managing a session created with a wireless USB device through a wireless network, the wireless USB host comprising:

a message generating unit to generate a session status message for checking a status of the created session, wherein the session status message generated by the message generating unit indicates whether the created session is active;

a wireless transceiving unit to periodically transmit the generated session status message to the wireless USB device through the wireless network and to receive a session status message from the wireless USB device through the wireless network, wherein the session status message received from the wireless USB device indicates whether the created session is active;

a counter to count a number of continuous reception failures corresponding to a number of the session status messages that are not received from the wireless USB device; and

a session creation management unit to change a current status of the created session from a connected status to a suspended status if the current status of the created session is the connected status when the number of the continuous reception failures reaches a first reference number, and to terminate the created session if the current status is the suspended status when the number of the continuous reception failures reaches a second reference number,

wherein the generated session status message is periodically transmitted to check the status during the entire created session; and

wherein the suspended status allows a session to be restarted without creating a new session.

18. The wireless USB host as claimed in claim 17, further comprising a session information storage unit to store session information including the status of the created session.

19. The wireless USB host as claimed in claim 17, wherein the session creation management unit terminates the created session when a session close message including an instruction to terminate the created session is received.

20. The wireless USB host as claimed in claim 17, wherein the session creation management unit changes the current status of the created session to the connected status when one of session status messages is received while the current status of the created session is the suspended status.

21. The wireless USB host of claim 18, wherein the session creation management unit deletes the session information on the created session when the created session is terminated.

22. The wireless USB host as claimed in claim 18, wherein the session information comprises a session identification (ID), or an Internet Protocol (IP) address, or the current status of the created session, or any combination thereof.

23. The wireless USB host as claimed in claim 17, wherein the session creation management unit transmits a session close message including an instruction to terminate the created session when the created session is desired to be terminated.

24. The wireless USB host as claimed in claim 17, wherein the wireless network is a mobile ad hoc network.

25. The wireless USB host as claimed in claim 17, wherein the first reference number is N and the second reference number is 2N.

26. The wireless USB host as claimed in claim 17, wherein each of the session status messages comprises session status information indicating whether the created session is active.

27. The wireless USB host as claimed in claim 17, wherein each of the session status messages comprises a session status bitmap comprising a bit indicating whether the created session is active.

28. The wireless USB host as claimed in claim 17, wherein the session status messages are periodically transmitted after the session is created.

29. The wireless USB host as claimed in claim 17, wherein the session status messages that are not received when the current status of the created session is the connected status indicate that the created session is active;

and

the session status messages that are not received when the current status of the created session is the suspended status indicate that the created session is inactive.

30. A wireless USB device for managing a session created with a wireless USB host through a wireless network, the wireless USB device comprising:

a wireless transceiving unit to receive through the wireless network a session status message, periodically transmitted from the wireless USB host through the wireless network, indicating a status of the created session, wherein the session status message indicates whether the created session is active;

a counter to count a number of continuous reception failures corresponding to a number of the session status messages that are not received from the wireless USB host; and

a session creation management unit to change a current status of the created session from a connected status to a suspended status if the current status of the created session is the connected status when the number of the continuous reception failures is greater than a first reference number, and to close the created session if the current status is the suspended status when the number of the continuous reception failures is greater than a second reference number,

wherein the session status message is periodically transmitted to indicate the status during the entire created session; and

wherein the suspended status allows a session to be restarted without creating a new session.

31. The wireless USB device as claimed in claim 30, wherein each of the session status messages comprises session status information indicating whether the created session is active.

32. The wireless USB device as claimed in claim 30, wherein each of the session status messages comprises a session status bitmap comprising a bit indicating whether the created session is active.

33. The wireless USB device as claimed in claim 30, wherein the session status messages are periodically transmitted after the session is created.

34. The wireless USB device as claimed in claim 30, wherein the session status messages that are not received when the current status of the created session is the connected status indicate that the created session is active;

and

the session status messages that are not received when the current status of the created session is the suspended status indicate that the created session is inactive.

35. A wireless USB host for managing a session created with a wireless USB device through a wireless network, the wireless USB host comprising:

a wireless transceiving unit to receive through the wireless network a session status message, periodically transmitted from the wireless USB device through the wireless network, indicating a status of the created session, wherein the session status message indicates whether the created session is active;

a counter to count a number of continuous reception failures corresponding to a number of the session status messages that are not received from the wireless USB device; and

a session creation management unit to change a current status of the created session from a connected status to a suspended status if the current status of the created session is the connected status when the number of the continuous reception failures reaches a first reference number, and to close the created session if the current status is the suspended status when the number of the continuous reception failures reaches a second reference number,

wherein the session status message is periodically transmitted to indicate the status during the entire created session; and

wherein the suspended status allows a session to be restarted without creating a new session.

36. The wireless USB host as claimed in claim 35, wherein each of the session status messages comprises session status information indicating whether the created session is active.

37. The wireless USB host as claimed in claim 35, wherein each of the session status messages comprises a session status bitmap comprising a bit indicating whether the created session is active.

38. The wireless USB host as claimed in claim 35, wherein the session status messages are periodically transmitted after the session is created.

39. The wireless USB host as claimed in claim 35, wherein the session status messages that are not received when the current status of the created session is the connected status indicate that the created session is active;

and

the session status messages that are not received when the current status of the created session is the suspended status indicate that the created session is inactive.