The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2014
Filed:
Dec. 20, 2012
Jin Wang, Lisle, IL (US);
Jin Wang, Lisle, IL (US);
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
A method and apparatus for reducing call setup latency in an LTE network is disclosed. Services in a 1xRTT network are provided for both single receiver (SRx) and Dual Receiver (DRx) User Equipment using CSFB (Circuit Switched Fall Back). When an idle UE requests a CSFB to 1xRTT service and related PS (packet service) Suspension in the LTE network, an eNB can reduce or eliminate the exchange of RCC (Radio Resource Control) messages with the UE before UE is redirected to 1xRTT for CSFB service. Eliminating unnecessary messages reduces call setup latency. The number of exchanged messages can be reduced when the eNB broadcasts an indicator that the eNB supports CSFB and an MME (Mobility Management Entity) sends a message to the eNB indicating that a UE is requesting CSFB.