Patent application number | Description | Published |
20090037999 | Packet filtering/classification and/or policy control support from both visited and home networks - A method of supporting access to a selected Internet Protocol (IP) multimedia application via an IP Multimedia Subsystem (IMS) is provided for a roaming mobile node (MN)—i.e., user equipment (UE) ( | 02-05-2009 |
20090129296 | METHOD OF CALL CONFERENCING TO SUPPORT SESSION CONTINUITY FOR MULTI-MODE CLIENTS - The present invention provides methods of inter-technology handoff of a multi-mode mobile unit in a packet-switched communication system. One embodiment of the method includes establishing a call from a first application layer client in the first mobile unit using a first wireless communication link that operates according to a first wireless access technology. The method also includes sending, in response to detecting changing conditions of the first wireless communication link, a request to form a conference call including the first application layer client and inviting a second application layer client in the first mobile unit to join the conference call. The second application layer client uses a second wireless communication link that operates according to a second wireless access technology. The method further includes handing off the call from the first application layer client to the second application layer client. | 05-21-2009 |
20090141683 | METHOD OF BEST EFFORT HANDOFF TO MAINTAIN RADIO BEARER AND MIP SESSION CONTINUITY FOR MULTI-MODE MOBILE UNITS - The present invention provides a method of best effort hand off that is implemented in a mobile unit capable of communicating with a network according to multiple wireless access technologies. The method includes performing a handoff of the mobile unit from a first wireless communication link established according to a first wireless access technology to a second wireless communication link established according to a second wireless access technology. The method also includes transmitting, over the second wireless communication link, a de-registration message requesting de-registration of the first wireless communication link in response to performing the handoff. | 06-04-2009 |
20090175239 | METHOD OF SUPPORTING QUALITY-OF-SERVICE APPLICATION SESSION CONTINUITY DURING INTER-TECHNOLOGY HANDOVER USING A COMMON PACKET DATA FUNCTION - The present invention provides a method of handing off a mobile unit that supports multiple quality-of-service (QoS) application layer clients that operate according to multiple wireless access technologies in a packet-switched communication system. The method includes receiving information indicating a request to hand off the mobile unit from a first access network that operates according to a first wireless access technology to a second access network that operates according to a second wireless access technology. The mobile unit established a first session according to the first wireless access technology at a first QoS level. The method also includes establishing, concurrently with the first session and in response to receiving the handoff request, a second session according to the second wireless access technology at the first QoS level. The method further includes communicating with the mobile unit at the first QoS level using the first and second sessions. | 07-09-2009 |
20090209255 | METHOD OF PROVDING TRANSCODING DURING VOICE-OVER-INTERNET PROTOCOL HANDOFF - The present invention provides a method for supporting handoffs of a first mobile unit in a wireless communication system that supports multiple vocoder technologies. The method includes allocating, prior to completion of a handoff of the first mobile unit, a transcoder function to the first mobile unit. The method also includes detecting a change in a format of at least one packet received from the first mobile unit. The change indicates that the vocoder technology used by the first mobile unit to form packets has changed. The method also includes transcoding packets in response to detecting the change in the format. | 08-20-2009 |
20090264096 | ONLINE CHARGING FOR ROAMING USERS IN A PROXY ONLINE CHARGING SYSTEM OF A VISITED NETWORK - Communication networks and methods are disclosed for performing online charging credit control in a visited network when a user is roaming. The visited network which is providing service to a roaming user includes a proxy online charging system (OCS) that communicates with a home OCS in a home network of the user. The proxy OCS transmits an online charging request message to a home OCS in a home network for the roaming user requesting charging information for the roaming user. The proxy OCS receives an online charging response message from the home OCS that includes the charging information for the roaming user. The proxy OCS then processes the charging information to perform credit control for one or more network elements in the visited network that is serving the session. | 10-22-2009 |
20090264097 | CHARGING IN LTE/EPC COMMUNICATION NETWORKS - Communication networks and methods are disclosed for performing charging in LTE/EPC communication networks. In an LTE/EPC communication network, a PCRF stores charging rules for online and offline charging. To perform charging for a session, LTE network elements that are serving the session request charging rules from the PCRF. The PCRF identifies the charging rules, and assigns a unique LTE charging identifier for the session across all network elements in the LTE/EPC communication network. The LTE network elements receive the charging rules from the PCRF along with the LTE charging identifier for the session. The LTE network elements generate charging messages for the session, and insert the LTE charging identifier in the charging messages. The LTE network elements then transmit the charging messages to a charging system, such as an OCS or an OFCS. The OCS/OFCS may then correlate the charging messages for the session based on the LTE charging identifier. | 10-22-2009 |
20100128613 | Detection of bearer loss in an IP-based multimedia session - The present invention provides a method for detecting bearer loss in an IP-based multimedia session. A multimedia session is initiated by an access terminal. A Policy and Charging Rules Function (PCRF) communicates the Session setup information and the bearer characteristics to a Signaling Gateway (SGW). The SGW uses this information to adjust the dormancy timers on the originating side so that the originating access link remains active during the call setup. | 05-27-2010 |
20110090849 | Approach for QoS control on un-wanted services (e.g. VoIP or Multimedia) over wireless and wireless IP network - An apparatus in one example has: at least one access network operatively coupled to an access and data network; and a controller in the access and packet data network, the controller determining access of data flow from the access network through the access and data network. Embodiments allow access or packet data service providers to control which types of services are allowed over their respective access and packet data networks. | 04-21-2011 |
20120157041 | ONLINE CHARGING FOR ROAMING USERS IN A PROXY ONLINE CHARGING SYSTEM OF A VISITED NETWORK - Communication networks and methods are disclosed for performing online charging credit control in a visited network when a user is roaming. The visited network which is providing service to a roaming user includes a proxy online charging system (OCS) that communicates with a home OCS in a home network of the user. The proxy OCS transmits an online charging request message to a home OCS in a home network for the roaming user requesting charging information for the roaming user. The proxy OCS receives an online charging response message from the home OCS that includes the charging information for the roaming user. The proxy OCS then processes the charging information to perform credit control for one or more network elements in the visited network that is serving the session. | 06-21-2012 |