Method and apparatus for frequency selection at start of...

Details Method and apparatus for frequency selection at start of... Method and apparatus for frequency selection at start of...

2011-08-16

2011-08-16

Afshar, Kamran (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S328000, C370S329000, C370S341000, C370S312000, C455S434000, C455S450000, C455S447000

Reexamination Certificate

active

08000303

ABSTRACT:
A method and an apparatus are disclosed for applying frequency layer convergence (FLC) to connected mode user equipments (UE) having no dedicated channel for a multimedia broadcast/multicast service (MBMS) service in a mobile communication system employing a Code Division Multiple Access (CDMA) scheme. The method and apparatus prevent uplink signaling congestion which may occur when the UEs located in non preferred frequency layers (NPL) of the MBMS service move to a preferred frequency layers (PL) when a MBMS service session starts. If the MBMS service session starts in a situation of applying the FLC, a radio network controller (RNC) notifies the UEs desiring to receive the MBMS service and located in NPLs for the MBMS service of FLC information including a PF value and a timer value, with reference to the number of the NPL UEs joining the MBMS service. The UEs performs a PF test according to the PF and timer values, thereby maintaining the degree of congestion and signal transmission load at appropriate levels.

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3GPP TSG RAN WG2#41 “Tracing and MBMS Bearer Establishment for UEs in URQA-PCH” Malaga, Spain; Feb. 16-20, 2004; XP-002337462.
Universal Mobile Telecommunications System (UMTS); Introduction of Multimedia Broadcast/Multicast Service (MBMS) In the Radio Access Network (RAN); Stage 2 (3GPP TS 25.346 Version 6.0.0 Release 6), Mar. 31, 2004; pp. 1-51; XP002367431; Retrieved from the Internet: URL:http://webapp.etsi.org/exchangefolder/ts-125346v060000p.pdf 'retrieved on Feb. 1, 2006.

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