Session invitation method and system

• US 20060067287A1
• Filed: 09/20/2005
• Published: 03/30/2006
• Est. Priority Date: 09/20/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yoon, Kyung-Ae, Han, Kyu-Sung, Kim, Jong-Sook, Choi, Sung-Bum, Huh, Kang-Suk, Kim, Young-Ae
• Granted Patent: US 7,817,649 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/4061 Push-to services, e.g. push-to-talk or push-to-video
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]

Abstract

Session invitation method and system in a PTx communication system are disclosed. For session invitation, an inviting terminal adds first media information corresponding to session information in an invitation message and transmits it or transmits it through an RTP. Then, the first media information received by an invited terminal is checked and an invitee determines whether to accept the invitation before joining the session. When the invitation is rejected, the invited terminal adds second media information corresponding to a reason for rejection in a reject message and transmits it, or transmits it through the RTP.

Claims

1. A session invitation system comprising:

a first terminal for transmitting an invitation message including first media information for session invitation; and

a second terminal for checking the first media information included in the invitation message and determining whether to accept the invitation.

2. The system of claim 1, wherein when the invitation is rejected, the second terminal transmits a reject message including second media information corresponding to a reason for rejection.

3. The system of claim 1, wherein the first terminal checks the second media information included in the received reject message and recognizes the reason for rejection to its invitation.

4. The system of claim 1, further comprising:

a server for controlling session setup, message transmission and transmission of the first media information between the first and second terminals.

5. The system of claim 1, wherein the first and second terminals are PTx terminals, respectively.

6. The system of claim 2, wherein the first and second terminals comprises, respectively;

a transmission/reception unit for performing transmission and reception of a message;

an Session Initiation Protocol system for setting up or releasing a session, transmitting an invitation message including the first media information to the transmission/reception unit in case of inviting to a session, and checking the first media information included in the received invitation message and determining whether to accept the invitation in case of being invited to the session;

a media output unit for outputting the first and/or second media information; and

a media information database for storing the first and/or second media information.

7. The system of claim 6, wherein the SIP system transmits a reject message including the second media information to the transmission/reception unit when the session invitation is rejected.

8. The system of claim 7, wherein the SIP system comprises:

an SIP connection setup/release unit for setting up/releasing a session, adding the first media information in the invitation message and transmitting the invitation message, and adding the second media information in the reject message and transmitting the reject message.

9. The system of claim 8, wherein the RTP/RTCP transmitting unit transmits the first media information by using an RTP, separately from the invitation message.

10. The system of claim 9, wherein the RTP/RTCP transmitting unit transmits a reception ACK message when it receives the first media information.

11. The system of claim 6, further comprising:

a media information transcoding unit for transcoding a format of the received first or second media information into a media information format that can be supported by the terminal.

12. The system of claim 1, wherein the first media information includes session information containing at least one or more of a reason for invitation, information on an inviter, the number of the invited, and information on an invitee or invitees.

13. The system of claim 1, wherein the first media information includes session information containing at least one or more of a reason for invitation, information on an inviter, the number of the invited, information on an invitee or invitees, the number of participants and information on the participants.

14. The system of claim 1, wherein the first media information includes at least one or more of text, an image, video and audio.

15. The system of claim 1, wherein the first media information includes at least one or more of media content corresponding to session information and a reference to the media content.

16. The system of claim 15, wherein the reference is a Uniform Resource Locator or a Uniform Resource Identifier.

17. The system of claim 2, wherein the second media information includes at least one or more of text, an image, video or audio.

18. The system of claim 2, wherein the second media information includes at least one or more of media content, namely, information on a reason for rejection and a reference to the media content.

19. The system of claim 18, wherein the address is a Uniform Resource Locator or a Uniform Resource Identifier.

20. A session invitation system comprising:

a server for receiving a session invitation message or a reject message including a media component from a terminal, storing media content of the media component, adding a reference to the media content in the session invitation message or in the reject message, and transmitting it to a receiving side.

21. The system of claim 20, wherein the server comprises:

a transmission/reception unit for transmitting/receiving a message to/from one or more terminals;

a database for storing the media content; and

an Session Initiation Protocol system for checking a reference to the media content, adds the reference to the media content in the session invitation message or reject message, and transmitting the session invitation message or reject message to the transmission/reception unit.

22. The system of claim 21, wherein the SIP system comprises:

an SIP connection setup/release unit for setting up/releasing a session, checking a reference to the media content, and changing the media content included in the session invitation message or the reject message to the checked reference or adding the checked reference in the session invitation message or the reject message; and

an RTP/RTCP transmission unit for controlling transmission/reception of RTP data among participants of the session.

23. The system of claim 20, wherein the reference is a Uniform Resource Locator or a Uniform Resource Identifier.

24. The system of claim 20, wherein the media component contained in the session invitation message includes at least one or more of media content corresponding to information of the invitation session and the reference to the media content.

25. The system of claim 24, wherein when the session begins, the session information includes at least one or more of a reason for invitation, information on an inviter, the number of the invited, and information on an invitee or invitees.

26. The system of claim 24, wherein when the session has been already established, the session information includes at least one or more of a reason for invitation, information on an inviter, the number of the invited, information on an invitee or invitees, the number of participants and information on the participants.

27. The system of claim 20, wherein the media component included in the reject message includes at least one or more of the media content corresponding to a reason for rejection and a reference to the media content.

28. The system of claim 20, wherein the media component includes at least one or more of text, an image, video and audio.

29. A session invitation method comprising:

transmitting by an inviting terminal first media information corresponding to information on a session for session invitation; and

receiving the first media information and transmitting a response information determining whether to accept the invitation, by an invited terminal.

30. The method of claim 29, wherein the first media information is included in the invitation message, namely, an SIP message, and transmitted.

31. The method of claim 29, wherein the first media information is transmitted through an RTP, separately from the invitation message.

32. The method of claim 29, wherein the first media information includes at least one or more of text, an image, video and audio.

33. The method of claim 29, wherein the first media information includes at least one or more of media content and a reference to the media content.

34. The method of claim 33, wherein the reference is a Uniform Resource Locator or a Uniform Resource Identifier.

35. The method of claim 29, wherein the session information includes session information containing at least one or more of a reason for invitation, information on an inviter, the number of the invited, and information on an invitee or invitees.

36. The method of claim 29, wherein the session information includes session information containing at least one or more of a reason for invitation, information on an inviter, the number of the invited, information on an invitee or invitees, the number of participants of the session and information on the participants.

37. The method of claim 29, wherein the response information is an accept message when the session invitation is accepted.

38. The method of claim 29, wherein the response information is a second media information corresponding to a reason for rejection to the invitation if the invitee rejects the invitation.

39. The method of claim 38, wherein the second media information is included in a reject message, namely, an SIP message, and transmitted.

40. The method of claim 38, wherein the second media information is transmitted through an RTP.

41. The method of claim 29, wherein the second media information includes at least one or more of text, an image, video and audio.

42. The method of claim 38, wherein the second media information includes at least one or more of media content and a reference to the media content.

43. The method of claim 42, wherein the reference is a Uniform Resource Locator or a Uniform Resource Identifier.

44. A session invitation method comprising:

receiving by a server a media component from a transmission terminal; and

storing media content of the media component and transmitting a reference to the media content to a reception terminal, by the server.

45. The method of claim 44, wherein the media component is included in an invitation message for session invitation and received.

46. The method of claim 44, wherein the media component is received through an RTP from the transmission terminal.

47. The method of claim 44, wherein the media component includes information of invitation session.

48. The method of claim 47, wherein the invitation session information includes at least one or more of a reason for invitation, information on an inviter, the number of the invited, and information on an invitee or invitees.

49. The method of claim 47, wherein when the session has been already established, the session information includes at least one or more of a reason for invitation, information on an inviter, the number of the invited, information on an invitee or invitees, the number of participants of the session and information on the participants.

50. The method of claim 44, wherein the media component is included in a reject message for rejecting the session invitation and received.

51. The method of claim 44, wherein the media component includes a reason for rejection to the invitation.

52. The method of claim 44, wherein the media component includes at least one or more of text, an image, video and audio.

53. The method of claim 44, wherein the server stores the media content of the media component in its database or in an external storage unit.

54. The method of claim 44, wherein the reference is a Uniform Resource Locator or a Uniform Resource Identifier.

55. The method of claim 44, wherein the reception terminal is connected with the reference to the media content and checks the media content.

56. The method of claim 44, wherein the server changes the media content of the media component to the reference to the media content or adds the reference to the media content in the media component.

57. A session invitation method comprising:

transmitting by an inviting terminal a message for session invitation containing first media information to a server;

transmitting by the server the invitation message to an invited terminal;

outputting by the invited terminal first media information contained in the invitation message;

inputting by an invited terminal whether to accept the invitation to a session; and

transmitting by the invited terminal an accept message if the session invitation is accepted.

58. The method of claim 57, wherein the invitation message is an Session Initiation Protocol message.

59. The method of claim 57, wherein the reject message is an Session Initiation Protocol message.

60. The method of claim 57, further comprising:

setting up a session between the inviting terminal and the invited terminal; and

transmitting by the inviting terminal Real-time Transport Protocol data to the invited terminal through the session.

61. The method of claim 57, wherein the accept message is an Session Initiation Protocol message.

62. The method of claim 57, wherein when the session begins, the first media information includes session information containing at least one or more of a reason for invitation, information on an inviter, the number of the invited, and information on an invitee or invitees.

63. The method of claim 57, wherein when the session has been already established, the first media information includes session information containing at least one or more of a reason for invitation, information on an inviter, the number of the invited, information on an invitee or invitees, the number of participants and information on the participants.

64. The method of claim 57, wherein the first media information includes at least one or more of text, an image, video and audio.

65. The method of claim 57, wherein the first media information includes at least one or more of media content corresponding to the session information content and a reference to the media content.

66. The method of claim 65, wherein the reference is a Uniform Resource Locator or a Uniform Resource Identifier.

67. The method of claim 57, further comprising:

transmitting by the invited terminal a reject message if the session invitation is rejected.

68. The method of claim 67, wherein, in the step of transmitting the reject message, the invited terminal transmits the reject message containing second media information corresponding to a reason for rejection.

69. The method of claim 68, wherein the second media information includes at least one or more of media content, namely, content of a reason for rejection, and a reference to the media content.

70. The method of claim 69, wherein the reference is a Uniform Resource Locator or a Uniform Resource Identifier.

71. The method of claim 67, wherein the step of transmitting the reject message comprises:

transmitting a ‘

provisional decline’

message indicating that a reason for rejection to the session invitation will be transmitted within a certain time; and

transmitting a Session Initiation Protocol message containing the reason for rejection within the certain time.

72. The method of claim 71, wherein the Session Initiation Protocol message is one of a ‘

486 Busy Here’

message and a ‘

602 Decline’

message.

73. A session invitation method comprising:

transmitting by an inviting terminal an invitation message for session invitation to a server;

transmitting by the server the invitation message to an invited terminal;

transmitting by the invited terminal a response message with respect to the invitation message and setting a media session with the inviting terminal;

transmitting by the inviting terminal first media information to the server through a Real-time Transport Protocol;

transmitting by the server the first media information to the invited terminal;

outputting by the invited terminal the first media information;

inputting by an invitee whether or not to accept the session invitation to the invited terminal;

transmitting by the invited terminal an accept message if the session invitation is accepted; and

setting up a session by the inviting terminal and the invited terminal.

74. The method of claim 73, further comprising:

transmitting by the invited terminal a reject message if the session invitation is rejected.

75. The method of claim 74, wherein, in the step of transmitting the reject message, the invited terminal transmits the reject message including the second media information corresponding to a reason for rejection.

76. The method of claim 74, wherein the step of transmitting the reject message comprises:

transmitting a ‘

Provisional Decline’

message indicating that a reason for rejection will be transmitted within a certain time; and

transmitting a Session Initiation Protocol message containing the second media information corresponding to the reason for rejection within the certain time.

77. The method of claim 76, wherein the Session Initiation Protocol message is one of a ‘

486 Busy Here’

message and a ‘

602 Decline’

message.

78. The method of claim 74, wherein the step of transmitting the reject message comprises:

transmitting a ‘

provisional decline’

message indicating that a reason for rejection will be transmitted within a certain time;

transmitting the reason for rejection by using a Real-time Transport Protocol within a certain time; and

transmitting a media transmission completion message after transmission of the reason for rejection.

79. The method of claim 73, wherein the first media information includes at least one or more of media content, namely, session information containing a reason for invitation and a reference to the media content.

80. The method of claim 79, wherein the reference to the media content is a Uniform Resource Locator or a Uniform Resource Identifier.

81. The method of claim 73, wherein the first media information includes at least one or more of text, an image, video and audio.

82. The method of claim 75, wherein the second media information includes at least one or more of the media content, namely, a reason for rejection, and a reference to the media content.

83. The method of claim 82, wherein the reference to the media content is a Uniform Resource Locator or a Uniform Resource Identifier.

84. The method of claim 75, wherein the second media information includes at least one or more of text, an image, video and audio.

85. A group communications terminal, comprising:

a transceiver to send and receive data to and from other users via a group communications network;

a memory to store the data; and

a processor cooperating with the transceiver and the memory to perform the steps of,

sending a session invitation message to one or more users via the group communications network, the message including media components indicating a reason for invitation and information about one or more participants of the session; and

receiving an acceptance or a rejection to the session invitation, the rejection including one or more reasons for rejection.

86. A group communications terminal, comprising:

a transceiver to send and receive data to and from other users via a group communications network;

a memory to store the data; and

a processor cooperating with the transceiver and the memory to perform the steps of,

receiving a session invitation message from a user via the group communications network, the message including media components indicating a reason for invitation and information about one or more participants of the session;

checking the reason for invitation and information about one or more participants to determine whether to accept or reject the session invitation; and

sending an acceptance or a rejection to the session invitation, the rejection including one or more reasons for rejection.

87. A session invitation method, comprising:

transmitting by a first terminal a reference to a media content for session invitation;

receiving the reference to the media content by a second terminal; and

transmitting a response information from the second terminal to the first terminal.

88. The method of claim 87, wherein the transmitting the reference to the media content, comprising:

storing by the first terminal the media content in its database or in an external storage unit;

obtaining by the first terminal the reference to the media content; and

transmitting by the first terminal the reference to the media content.

89. The method of claim 87, wherein the transmitting the response information comprising:

accessing by the second terminal the reference to media content;

checking by the second terminal the media content;

determining by the second terminal whether to accept the session invitation; and

transmitting by the second terminal the response information to the first terminal.

90. The method of claim 87, wherein the media content includes session information containing at least one or more of a reason for invitation, information on an inviter, the number of the invited, and information on an invitee or invitees.

91. The method of claim 87, wherein the media content includes session information containing at least one or more of a reason for invitation, information on an inviter, the number of the invited, information on an invitee or invitees, the number of participants and information on the participants.

92. The method of claim 87, wherein the media content includes at least one or more of text, an image, video and audio.

93. The method of claim 87, wherein the response information is an accept message when the session invitation is accepted.

94. The method of claim 87, wherein the response information is media information corresponding to a reason for rejection to the invitation if the invitation to the session is rejected.

95. The method of claim 94, wherein the media information is included in a reject message, and transmitted, and wherein the reject message is an SIP message.

96. The method of claim 94, wherein the media information is transmitted through an RTP.

97. The method of claim 94, wherein the media information includes at least one or more of text, an image, video and audio.

98. The method of claim 94, wherein the media information includes at least one or more of media content and a reference to the media content, and wherein the media content indicates the reason for rejection to the invitation.

99. The method of claim 87, wherein the reference is a Uniform Resource Locator or a Uniform Resource Identifier.