US 7,489,929 C1 (12,301st)
Hard handoff procedure for dedicated and high speed shared channels
Suman Das, Scotch Plains, NJ (US); Ali Masoomzadeh-Fard, Marlboro, NJ (US); Martin H. Meyers, Montclair, NJ (US); and Harish Viswanathan, Morristown, NJ (US)
Filed by Suman Das, Scotch Plains, NJ (US); Ali Masoomzadeh-Fard, Marlboro, NJ (US); Martin H. Meyers, Montclair, NJ (US); and Harish Viswanathan, Morristown, NJ (US)
Assigned to WSOU INVESTMENTS, LLC, Los Angeles, CA (US)
Reexamination Request No. 90/015,029, May 13, 2022.
Reexamination Certificate for Patent 7,489,929, issued Feb. 10, 2009, Appl. No. 11/095,043, Mar. 31, 2005.
Ex Parte Reexamination Certificate issued on May 19, 2023.
Int. Cl. H04W 36/00 (2009.01); H04W 36/18 (2009.01); H04W 36/12 (2009.01)
CPC H04W 36/18 (2013.01) [H04W 36/12 (2013.01)]
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
The patentability of claims 1-15 is confirmed.
1. A method of communicating between a mobile station, a serving base station and a target base station comprising:
establishing a new link between the target base station and the mobile station before releasing an existing link between the mobile station and the serving base station while having only the existing link in an active set for the mobile station before releasing the existing link by
(A) determining if a handoff is desired between the serving base station and the target base station;
(B) initiating the new link between the mobile station and the target base station;
(C) transmitting an active set update message to the mobile station using the existing link between the sensing base station and the mobile station;
(D) achieving uplink synchronization for the target base station to communicate with the mobile station;
(E) receiving at least one signal over the new link indicating that the mobile station has processed the transmitted active set update message; and
(F) releasing the existing link responsive to the at least one signal of step (E).