Patent ID: 8644260
Filing Date: 2014-02-04
Classification: H04W

Abstract:
1. A method of changing a high speed data serving cell, comprising: making a first determination, at a mobile user equipment, to switch a high speed data link from a source serving cell to a first target serving cell; transmitting a first serving cell change request message indicating the first determination to switch to the first target serving cell; monitoring for a first serving cell change order from the first target serving cell for at least part of a first time period associated with a first timer; making a second determination, while monitoring for the first serving cell change order from the first target cell, to switch the high speed data link to a second target serving cell; transmitting a second serving cell change request message indicating the second determination to switch to the second target serving cell; and monitoring for a second serving cell change order from the second target serving cell for at least part of a second time period associated with a second timer, the second time period occurring during at least a portion of the first time period; storing data related to the first target serving cell and the second target serving cell in an HS-SCCH order monitored set; starting the first timer upon storing data related to the first target serving cell in the HS-SCCH order monitored set; starting the second timer upon storing data related to the second target serving cell in the HS-SCCH order monitored set; and removing data related to the first target serving cell or data related to the second target serving cell from the HS-SCCH order monitored set at least upon expiration of the first timer or the second timer, respectively.