Packet mode telecommunications method and system in which calls can be handed over from one path to another

Patent 6690935 Issued on February 10, 2004. Estimated Expiration Date:

December 10, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Device for transmitting packets in an asynchronous time-division network, and method of encoding silences
Patent #: 4701912
Issued on: 10/20/1987
Inventor: Bueno , et al.

Handoff method and apparatus for mobile wireless workstation
Patent #: 5181200
Issued on: 01/19/1993
Inventor: Harrison

Method and apparatus for performing handoff in a packet data communication system
Patent #: 5530693
Issued on: 06/25/1996
Inventor: Averbuch, et al.

Optimized method of data communication and system employing same
Patent #: 5933435
Issued on: 08/03/1999
Inventor: Shah, et al.

Telecommunication system, and data-packets switch, and method
Patent #: 5974035
Issued on: 10/26/1999
Inventor: Norp

Multi-channel automatic retransmission query (ARQ) method
Patent #: 6021124
Issued on: 02/01/2000
Inventor: Haartsen

System for placing packets on network for transmission from sending endnode to receiving endnode at times which are determined by window size and metering interval
Patent #: 6105064
Issued on: 08/15/2000
Inventor: Davis, et al.

Method of combining cell streams in a radio communications system
Patent #: 6128287
Issued on: 10/03/2000
Inventor: Freeburg, et al.

Method and device for data transmission and reception using transmission pause state as reception timing
Patent #: 6205156
Issued on: 03/20/2001
Inventor: Watanabe, et al.

Data transfer method for wire real-time communications Patent #: 6496481
Issued on: 12/17/2002
Inventor: Wu, et al.

Inventors

Assignee

Alcatel

Application

No. 09/458072 filed on 12/10/1999

US Classes:

455/436, Handoff455/439Handoff initiated by another source (e.g., target, user initiated, mobile switching center (MSC), or mobile telephone switching office (MTSO), etc.)

Examiners

Primary: Bost, Dwayne D.
Assistant: Gelin, Jean A

Attorney, Agent or Firm

Sughrue Mion, PLLC

International Classes

H04L 12/56 (20060101)
H04Q 7/38 (20060101)
H04B 7/185 (20060101)
H04Q 7/22 (20060101)

Foreign Application Priority Data

1999-09-16 FR

Abstract

The invention concerns a method of transmitting non-dated digital data between a transmitter and a receiver in which the data can take at least two different paths between the transmitter and the receiver and handover from one path to another occurs during transmission. In the transmitter, packets intended for the second path are transmitted only after the last packet intended for the first path has been transmitted and in the transmitter and in the receiver packets on the first or second path are delayed in order for packets on the second path to arrive after packets on the first path. It is therefore not necessary to transmit signaling to differentiate the two paths at the receiver, which can include a single demodulator.

Other References

Karagiannis, G. et al.: "Handover Mechanisms in ATM-based Mobile Systems" IEEE Global Telecommunications Conference, US, New York, NY: IEEE. 1998, pp. 2572-2579, XP000801515, ISBN: 0-7803-4985-7