The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2009
Filed:
Nov. 29, 2005
Ajoy K. Singh, Round Lake, IL (US);
Yogesh B. Bhatt, Schaumburg, IL (US);
Ajoy K. Singh, Round Lake, IL (US);
Yogesh B. Bhatt, Schaumburg, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Various embodiments are described to address the need for an apparatus and method that improves link layer handoff by addressing the packet-loss problem existing today. An intermediate buffer management layer (IBML) () is introduced below layerof an OSI-based communications interface. The IBML buffers copies of OSI layerpackets being transmitted via lower layers () of the interface and manages the buffer contents using indications the IBML receives from one or more of the lower layers. When the IBML receives an indication that a link layer hard handoff is proceeding, the IBML transfers the presently buffered packets to a corresponding IBML () in the target communications interface. This sub-layerbuffer transfer enables the target communications interface to reduce packet-loss associated with the hard handoff.