US Patent No. 10,433,364

SYSTEMS AND METHODS FOR FACILITATING THE TRANSITION OF A WIRELESS COMMUNICATION DEVICE (WCD) FROM A CELL_FACH STATE TO A CELL_DCH STATE


Patent No. 10,433,364
Issue Date October 01, 2019
Title Systems And Methods For Facilitating The Transition Of A Wireless Communication Device (wcd) From A Cell_fach State To A Cell_dch State
Inventorship Alessandro Caverni, Stockholm (SE)
Jose Luis Pradas, Stockholm (SE)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,433,364

1. A method for facilitating the transition of a wireless communication device (WCD) from a CELL_FACH state to a CELL_DCH state, the method comprising:determining that the WCD should transition from the CELL_FACH to the CELL_DCH cell state; and
in response to determining that the WCD should transition from the CELL_FACH to the CELL_DCH cell state:
i) sending to the WCD a first configuration message for moving the WCD from the CELL_FACH state to the CELL_DCH state,
ii) sending to the WCD a second configuration message for forcing the WCD to obtain a common E-DCH resource or retain a previously obtained common E-DCH resource, wherein the second configuration message is a message for requesting the WCD to move a reception window, comprises a Move Receiving Window (MRW) super-field (SUFI) and/or contains outdated information about the reception window; and
iii) when the second configuration message contains outdated information, triggering a transmission of an acknowledgement (ACK), acknowledging a reception of the second configuration message and affecting the WCD to acquire a common E-DCH resource.