EP 0983694 A1 20000308 - BOUNDARY SECTOR HARD HANDOFF TRIGGER
Title (en)
BOUNDARY SECTOR HARD HANDOFF TRIGGER
Title (de)
AUSLÖSER VON HARTEM WEITERREICHEN AN DER SEKTORGRENZE
Title (fr)
DECLENCHEUR DE TRANSFERT INTERCELLULAIRE A SOLUTION DE CONTINUITE DANS LES SECTEURS LIMITROPHES
Publication
Application
Priority
- US 9809132 W 19980505
- US 85859397 A 19970519
Abstract (en)
[origin: WO9853620A1] A method and system for triggering hard handoff of a call from a CDMA network cell operating on a first frequency to a cell operating on at least one second frequency or in an AMPS network are disclosed. In a departure from the art, a boundary sector handoff trigger is implemented in two stages. The first stage of the trigger occurs when the active set of a mobile unit consists only of pilots identified as boundary pilots; that is, the active set comprises a "boundary active set." Once the requirements for the first stage are satisfied, a second stage of the boundary sector trigger of the present invention is enabled. During the second stage, a round-trip delay ("RTD") of communications between the mobile unit and the BTS to which it is nearest is monitored and once the RTD exceeds a predetermined threshold, the trigger is complete and handoff processing continues with target selection and handoff execution.
IPC 1-7
IPC 8 full level
H04W 36/14 (2009.01)
CPC (source: EP)
H04W 36/32 (2013.01); H04W 36/14 (2013.01)
Citation (third parties)
Third party :
US 5828661 A 19981027 - WEAVER JR LINDSAY A [US], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9853620 A1 19981126; AU 7285598 A 19981211; AU 735575 B2 20010712; CA 2290517 A1 19981126; CN 1265253 A 20000830; EP 0983694 A1 20000308; EP 0983694 A4 20020123
DOCDB simple family (application)
US 9809132 W 19980505; AU 7285598 A 19980505; CA 2290517 A 19980505; CN 98805293 A 19980505; EP 98920236 A 19980505