Patents Assigned to SK Telecom Company, Ltd.
  • Integration of 802.21 media independent handover functionality to radio interface layer and telephony server
    Patent number: 8134978
    Abstract: A radio interface layer media independent handover (RIL MIH) client functionality enables transparent inter-system handover of a wireless transmit/receive unit (WTRU) between different radio access technologies (RATs), without user intervention. The RIL MIH client interacts with RIL drivers and proxies, informs the RIL proxies of the handover status, then the proxies interact with a new driver in use. A WTRU is modified to add MIH functionality to a telephony server to support inter-system handover.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: March 13, 2012
    Assignees: InterDigital Technology Corporation, SK Telecom Company, Ltd.
    Inventors: Debashish Purkayastha, Michelle Perras, Shamim Akbar Rahman, Ulises Olvera-Hernandez, Alan G. Carlton, Samian Kaur
  • INTEGRATION OF 802.21 MEDIA INDEPENDENT HANDOVER FUNCTIONALITY TO RADIO INTERFACE LAYER AND TELEPHONY SERVER
    Publication number: 20090201879
    Abstract: A radio interface layer media independent handover (RIL MIH) client functionality enables transparent inter-system handover of a wireless transmit/receive unit (WTRU) between different radio access technologies (RATs), without user intervention. The RIL MIH client interacts with RIL drivers and proxies, informs the RIL proxies of the handover status, then the proxies interact with a new driver in use. A WTRU is modified to add MIH functionality to a telephony server to support inter-system handover.
    Type: Application
    Filed: October 28, 2008
    Publication date: August 13, 2009
    Applicants: INTERDIGITAL TECHNOLOGY CORPORATION, SK TELECOM COMPANY, LTD
    Inventors: Debashish Purkayastha, Michelle Perras, Shamim Akbar Rahman, Ulises Olvera-Hernandez, Alan G. Carlton, Samian Kaur