US 10,433,364 B2
Systems and methods for facilitating the transition of a wireless communication device (WCD) from a CELL_FACH state to a CELL_DCH state
Alessandro Caverni, Stockholm (SE); and Jose Luis Pradas, Stockholm (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 15/549,706
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Feb. 10, 2015, PCT No. PCT/SE2015/050159
§ 371(c)(1), (2) Date Aug. 9, 2017,
PCT Pub. No. WO2016/130057, PCT Pub. Date Aug. 18, 2016.
Prior Publication US 2018/0027607 A1, Jan. 25, 2018
Int. Cl. H04W 76/27 (2018.01); H04W 52/38 (2009.01); H04L 1/18 (2006.01); H04W 72/12 (2009.01)
CPC H04W 76/27 (2018.02) [H04L 1/1812 (2013.01); H04L 1/1887 (2013.01); H04W 52/38 (2013.01); H04W 72/1278 (2013.01)] 26 Claims
OG exemplary drawing
 
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the WCD to move a reception window, comprises a Move Receiving Window (MRW) super-field (SUFI) and/or contains outdated information about the reception window; and
iii) when the second configuration message contains outdated information, triggering a transmission of an acknowledgement (ACK), acknowledging a reception of the second configuration message and affecting the WCD to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.