Invention Grant
- Patent Title: Method and system for hard handoff in HRPD
- Patent Title (中): HRPD硬切换的方法和系统
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Application No.: US13673665Application Date: 2012-11-09
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Publication No.: US09049621B2Publication Date: 2015-06-02
- Inventor: Mohamed Khalil , Haseeb Akhtar
- Applicant: Mohamed Khalil , Haseeb Akhtar
- Applicant Address: US WA Redmond
- Assignee: Microsoft Technology Licensing, LLC
- Current Assignee: Microsoft Technology Licensing, LLC
- Current Assignee Address: US WA Redmond
- Agent Brandon Roper; Judy Yee; Micky Minhas
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W36/14

Abstract:
Various embodiments are described to assist in reducing handoff delays and the blackout period(s) associated with inter AN (access network) hard handoffs. The hard handoff procedure of method disclosed herein establishes or initiates a connection (A10-type connection) between a target AN and a packet data serving node (PDSN), unlike known hard handoff approaches that wait until traffic channel assignment to establish or initiate such connection. The PDSN may optionally bicast data packets to both the source and target ANs since each is communicatively coupled to the PDSN during a given time period. In the event bicasting is unavailable or unused, a communication tunnel between the source and target ANs may be created and used to transmit data packets between them.
Public/Granted literature
- US20140079019A1 METHOD AND SYSTEM FOR HARD HANDOFF IN HRPD Public/Granted day:2014-03-20
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