CELLULAR COMMUNICATION SYSTEM, APPARATUS AND METHOD FOR HANDOVER

• US 20120040679A1
• Filed: 10/26/2011
• Published: 02/16/2012
• Est. Priority Date: 06/21/2007
• Status: Active Grant

• Current Assignee: Sisvel International S.A. (Fineur International S.A.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: WORRALL, Chandrika K.
• Granted Patent: US 9,173,142 B2
• Time in Patent Office: Days
• US Class Current: 455/437
• CPC Class Codes: H04W 36/02 Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off

Abstract

A method for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network is described. The method comprises at the wireless subscriber communication unit receiving a handover command message from the first base station. At the first base station, the method comprises sending a scheduling request message to the second base station, in response to an acknowledgement message sent from the wireless subscriber communication unit. The method further comprises, at the second base station, scheduling, in response to the scheduling request message, at least one uplink scheduling resource (UL-SCH) for the wireless subscriber communication unit to transmit a handover (HO) confirmation message to the second base station; and receiving a handover confirmation message from the wireless subscriber communication unit on the at least one uplink scheduling resource (UL-SCH).

Claims

1. A method for handover of a wireless subscriber communication unit from a first base station to a second base station in a wireless network, the method comprising at the first base station:

receiving an acknowledgement message from the wireless subscriber communication unit that it is to be handed over to the second base station; and

sending a scheduling request message to the second base station, in response to the acknowledgement message to request a channel for a subsequent handover confirmation message to be sent from the wireless subscriber communication unit.