Fast method of initializing a call for an application of PTT type on an IP-WAN cellular network
First Claim
1. A method for initialising a call for a mobile terminal comprising applications of the push-to-talk (PTT) type for a PTT communication with a PTT server on an IP-WAN cellular network, said mobile terminal having both a PTT client and an IP-WAN modem that form a PTT over cellular (PoC) mobile terminal, said method comprising, for each user of said PoC mobile terminal connected to the IP-WAN modem intended to register for a group call:
- a step, which is triggered on starting up the IP-WAN modem, during which is performed a procedure for connecting to the IP-WAN cellular network;
a step in which, when the PTT client is active, and when the PTT client has obtained an IP address of the PTT server, the PTT client instigates a procedure for registering a session initiation protocol (SIP) with the PTT server on a default IP-WAN carrier;
a step in which, the PTT client proceeds to a procedure for affiliation to a call group with the PTT server on the default IP-WAN carrier;
a step in which, as soon as the procedure for affiliation to the call group is performed, an “
INVITE”
SIP procedure is executed to reserve RTP resources at an application level on a PTT server side and on the PTT client side, in such a way as to allow the establishment of the RTP session immediately after the procedure of affiliation of the PTT client to the group, wherein in order to perform the “
INVITE”
SIP procedure, the PTT client sends a “
SIP INVITE”
invitation message to the PTT server to request the initialisation of the RTP session for voice media, and wherein the RTP session is established immediately after the procedure of affiliation of the PTT client to the group without initializing a dedicated carrier on the IP-WAN cellular network to support the voice media for the PTT communication with said group, anda step in which, after the RTP session has been established immediately after the procedure of affiliation of the PTT client to the group without initializing a dedicated carrier to support the voice media for the PTT communication with said group, the PTT client initiates a PTT request to the PTT server for establishing the PTT communication with said group over the IP-WAN cellular network, said step of initiating, by the PTT client, the PTT request to the PTT server being carried out without performing another “
INVITE”
SIP procedure and including a step of initializing the dedicated carrier on the IP-WAN cellular network.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for initializing a call for a mobile terminal including PTT applications on an IP-WAN cellular network, the method including, for each user of the mobile terminal connected to an IP-WAN modem intended to register for a group call: upon starting up the IP-WAN modem, connecting the mobile terminal to the IP-WAN cellular network; when a PTT client is active and has obtained an IP address of a PTT server, initiating by the PTT client a procedure for registering a SIP with the PTT server on a default IP-WAN carrier; performing by the PTT client a procedure for affiliation to a call group with the PTT server on the default IP-WAN carrier, and as soon as the procedure for affiliation to the call group is performed, executing an “INVITE” (SIP) procedure to RTP resources at an application level on a PTT side and on the PTT client side, to allow the establishment of the RTP session after the affiliation of the PTT client to the group.
10 Citations
13 Claims
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1. A method for initialising a call for a mobile terminal comprising applications of the push-to-talk (PTT) type for a PTT communication with a PTT server on an IP-WAN cellular network, said mobile terminal having both a PTT client and an IP-WAN modem that form a PTT over cellular (PoC) mobile terminal, said method comprising, for each user of said PoC mobile terminal connected to the IP-WAN modem intended to register for a group call:
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a step, which is triggered on starting up the IP-WAN modem, during which is performed a procedure for connecting to the IP-WAN cellular network; a step in which, when the PTT client is active, and when the PTT client has obtained an IP address of the PTT server, the PTT client instigates a procedure for registering a session initiation protocol (SIP) with the PTT server on a default IP-WAN carrier; a step in which, the PTT client proceeds to a procedure for affiliation to a call group with the PTT server on the default IP-WAN carrier; a step in which, as soon as the procedure for affiliation to the call group is performed, an “
INVITE”
SIP procedure is executed to reserve RTP resources at an application level on a PTT server side and on the PTT client side, in such a way as to allow the establishment of the RTP session immediately after the procedure of affiliation of the PTT client to the group, wherein in order to perform the “
INVITE”
SIP procedure, the PTT client sends a “
SIP INVITE”
invitation message to the PTT server to request the initialisation of the RTP session for voice media, and wherein the RTP session is established immediately after the procedure of affiliation of the PTT client to the group without initializing a dedicated carrier on the IP-WAN cellular network to support the voice media for the PTT communication with said group, anda step in which, after the RTP session has been established immediately after the procedure of affiliation of the PTT client to the group without initializing a dedicated carrier to support the voice media for the PTT communication with said group, the PTT client initiates a PTT request to the PTT server for establishing the PTT communication with said group over the IP-WAN cellular network, said step of initiating, by the PTT client, the PTT request to the PTT server being carried out without performing another “
INVITE”
SIP procedure and including a step of initializing the dedicated carrier on the IP-WAN cellular network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for initialising a call for a mobile terminal comprising push to talk or press to transmit, or both, (PTT) applications for a PTT communication with a PTT server on an IP wide area network (IP-WAN) cellular network, said mobile terminal having both a PTT client and an IP-WAN modem that form a PTT over cellular (PoC) mobile terminal, said method comprising, for each user of said PoC mobile terminal connected to an IP-WAN modem intended to register for a group call:
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upon starting up the IP-WAN modem, connecting the PoC mobile terminal to the IP-WAN cellular network; when the PTT client is active and has obtained an IP address of the PTT server, initiating by the PTT client a procedure for registering a session initiation protocol (SIP) with the PTT server on a default IP-WAN carrier; performing by the PTT client a procedure for affiliation to a call group with the PTT server on the default IP-WAN carrier; as soon as the procedure for affiliation to the call group is performed, executing an “
INVITE”
session initiation protocol (SIP) procedure to reserve real time protocol (RTP) resources at an application level on a PTT server side and on the PTT client side, in such a way as to allow the establishment of the RTP session immediately after the procedure of affiliation of the PTT client to the group, wherein executing the “
INVITE”
SIP procedure includes sending by, the PTT client a “
SIP INVITE”
invitation message to the PTT server to request the initialisation of the RTP session for voice media, and wherein the RTP session is established immediately after the procedure of affiliation of the PTT client to the group without initializing a dedicated carrier on the IP-WAN cellular network to support the voice media for the PTT communication with said group, andafter the RTP session has been established immediately after the procedure of affiliation of the PTT client to the group without initializing a dedicated carrier to support the voice media for the PTT communication with said group, initiating by the PTT client a PTT request to the PTT server for establishing the PTT communication with said group over the IP-WAN cellular network, said initiating being carried out without performing another “
INVITE”
SIP procedure and including a step of initializing the dedicated carrier on the IP-WAN cellular network. - View Dependent Claims (13)
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Specification