Method and apparatus for implementing diversity for a dual-mode communication unit

Patent 5999815 Issued on December 7, 1999. Estimated Expiration Date:

July 8, 2018. 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

Multi-mode radio telephone which executes handover between different system
Patent #: 5737703
Issued on: 04/07/1998
Inventor: Byrne

Mobile communication apparatus, fixed communicaton apparatus, communication system and communication method
Patent #: 5887260
Issued on: 03/23/1999
Inventor: Nakata

Dual mode subscriber terminal, single mode subscriber terminal and a handover procedure of the dual mode subscriber terminal and the single mode subscriber terminal in a mobile telecommunications network Patent #: 5930712
Issued on: 07/27/1999
Inventor: Byrne, et al.

Inventors

Assignee

Motorola, Inc.

Application

No. 111974 filed on 07/08/1998

US Classes:

455/436, Handoff455/426.1, Including other radio communication system (e.g., cordless telephone, paging, trunking, etc.)455/553.1Radiotelephone having plural transceivers (e.g., for analog and digital, trunking and cellular, etc.)

Examiners

Primary: Le, Thanh Cong

Attorney, Agent or Firm

Beladi; Sayed Hossain

International Class

H04Q 007/00

Abstract

The present invention provides a method for implementing diversity for a dual-mode communication unit in a communication system. The communication system includes a first transceiver utilizing a first air interface and a second transceiver utilizing a second air interface distinct from the first air interface. The system also includes a controller that includes a selector function. The dual-mode communication unit transmits a first copy of bearer data to the first transceiver utilizing the first air interface. The dual-mode communication unit transmits a second copy of the bearer data to the second transceiver utilizing the second air interface. The first transceiver and the second transceiver sending the copy of the bearer data to the controller. The first transceiver and the second transceiver also send a quality metric to the controller. The controller selects a preferred copy of the bearer data based at least in part upon the quality metrics.