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US 12,225,423 B2Granted
Method to avoid bad user experience by using rapid initial IMS registration
AssigneeMediatek Inc.
InventorsRohit Naik, Hsin-Jun Tang
Life of this patent
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Abstract
A method of improving user experience for initial IP Multimedia Subsystem (IMS) registration is proposed. When a UE boots up or leaves flight mode, the processor of the UE determines a period Tn of time for IMS PDN initial setup on a single Access-Stratum Network, starting from sending IMS PDN setup request. Upon expiration of Tn, the UE aborts the IMS PDN set up request, and performs IMS PDN set up on another Access-Stratum Network. As a result, it allows the UE to rapidly use IMS service when boots up or leaves flight mode.
Claims16
A method, comprising:
- initiating an IP Multimedia Subsystem (IMS) registration procedure by a user equipment (UE) in a mobile communication network, wherein the UE sends an initial IMS registration request to an IMS server over a first radio access type (RAT);
- starting a guard timer upon sending the initial IMS registration request;
- aborting the IMS registration procedure over the first RAT upon the guard timer expiry;
- and
- transmitting another initial IMS registration request to the IMS server over a second RAT, wherein the UE establishes a connection with the network upon successful IMS registration over the second RAT, wherein the first RAT is a UE-preferred RAT, or the first RAT has a better radio signal strength or quality than the second RAT, and wherein the UE continues to handover the established connection to the first RAT in background.
2 more elements
A User Equipment (UE), comprising:
- an IP Multimedia Subsystem (IMS) handling circuit that initiates an IMS registration procedure in a mobile communication network, wherein the UE sends an initial IMS registration request to an IMS server over a first radio access type (RAT);
- a guard timer that is started upon sending the initial IMS registration request, wherein the UE aborts the IMS registration procedure over the first RAT upon the guard timer expiry;
- and
- a transmitter that transmits another initial IMS registration request to the IMS server over a second RAT, wherein the UE establishes a connection with the network upon successful IMS registration over the second RAT, wherein the first RAT is a UE-preferred RAT, or the first RAT has a better radio signal strength or quality than the second RAT, and wherein the UE continues to handover the established connection to the first RAT in background.
1 more element
Dependencies are inferred from the claim text.