Method and apparatus of performing frequency transitions in user equipment
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsJohan Rosenquist, Hakan Henningsson
Life of this patent
Estimating the term…
Abstract
A method and apparatus adapted to permit an internal handover from 1900 MHz to 900 MHz under controlled circumstances. Using the method of the present invention, the amount of time needed to disconnect a call of a user equipment (UE) under test, remove the 1800 MHz cell and setup a GSM 1900 MHz cell, allow the UE to perform a search for the 1900 MHz cell, register and establish a new call and then perform tests on GSM 1900 MHz is reduced by several seconds. On a production line in which millions of UEs are manufactured, the time saved by the present invention allows for significant savings in production costs.
Claims11
A method for testing a User Equipment (UE) operable in a plurality of bands, in a controlled environment, comprising the steps of:
- activating a call on the 1900 MHz band:
- and moving to the 900 MHZ band if protective conditions are met.
A method of testing a quad band user equipment (UE), comprising the steps of:
- activating a call on the UE in WCDMA 2100 and performing validation tests in the 2100 MHz band;
- performing a handover of the call to GSM 1900 and performing validation tests in the 1900 MHz band;
- performing a non-standard GSM handover from 1900 MHz band to the 900 MHz band and performing validation tests in 900 MHz band;
- and
- performing an internal GSM handover from the 900 MHz band to the 1800 MHz band and perform validation tests in the 1800 MHz band.
A quad band user equipment (UE), having a mobile platform, comprising:
- means for activating a call on the UE in WCDMA 2100 so that validation tests can be performed on the UE in the 2100 MHz band;
- means for performing a handover of the call to GSM 1900 so that validation tests can be performed in the 1900 MHz band;
- means for performing a non-standard GSM handover from 1900 MHz band to the 900 MHz band such that validation tests can be performed in 900 MHz band;
- and
- means for performing an internal GSM handover from the 900 MHz band to the 1800 MHz band such that validation tests can be performed in the 1800 MHz band.
A mobile platform adapted to be installed and executed by a user equipment, (UE) comprising computer code adapted to:
- activate a call on the UE in WCDMA 2100 so that validation tests can be performed on the UE in the 2100 MHz band;
- perform a handover of the call to GSM 1900 so that validation tests can be performed in the 1900 MHz band;
- perform a non-standard GSM handover from 1900 MHz band to the 900 MHz band such that validation tests can be performed in 900 MHz band;
- and
- perform an internal GSM handover from the 900 MHz band to the 1800 MHz band such that validation tests can be performed in the 1800 MHz band.
Dependencies are inferred from the claim text.