Inter-network handoff method
AssigneeLG Electronics Inc.
InventorSera Kang
Life of this patent
Estimating the term…
Abstract
An inter-network handoff system and method are disclosed, and include determining, by a setting BS, whether or not there exists a pilot stronger than a threshold value according to a PSMM received from a mobile station (MS), selecting a BS of which pilot is stronger than the threshold value as a target BS, determining whether or not the MS can accommodate a packet data service provided by the target BS, configuring the MS so as to accommodate the packet data service of the target BS, starting communication between the MS and the target BS, and terminating communication between the MS and the serving BS. Accordingly, a soft handoff can be performed between two systems having different data rates.
Claims28
A method of performing an inter-network handoff, comprising:
- determining whether or not a handoff of a Mobile Station (MS) is required from a serving base station (BS) to a target BS by analyzing a Pilot Strength Measurement Message (PSMM) received from the MS where the serving BS provides a first data rate service to the MS and the target BS supports second data rate, the first date rate being higher than the second date rate;
- determining whether or not the MS can accommodate the lower data rate service of the target BS when it is determined that the handoff is required;
- and
- performing the handoff when the MS can accommodate the second data rate service of the target BS.
A mobile communication system, comprising:
- a first base station configured to provide data service to a mobile station at a first data rate;
- and
- a second base station configured to provide data service to the mobile station at a second data rate, the first data rate being greater than the second data rate, wherein a soft handoff between the first base station in the second base station is performed by retrieving supplemental channels assigned to the mobile station, determining whether the mobile station can accommodate the second data rate, sending service information regarding the second base station to the mobile station, and completing the handoff by resetting parameters of the mobile station in accordance with a service information of the second base station.
A mobile communication terminal configured to provide data service in a spread spectrum communication system, comprising:
- means for determining whether a handoff is required from a serving base station providing data set-vice at a first rate and a target base station configured to provide data service at a second rate, the first rate being greater than the second rate;
- means for receiving from the serving base station service configuration information, radio configuration information, and PN code information of the target base station if the mobile communication terminal can accommodate the second data rate;
- and
- means for resetting parameters of the mobile communication terminal in accordance with the received target base station information so as to perform a handoff from the serving base station to the target base station.
Dependencies are inferred from the claim text.