Conditional access terminal initiation of delayed handover

Patent metadata

Field	Value
Publication number	US-9155014-B2
Application number	US-61814209-A
Country	US
Kind code	B2
Filing date	Nov 13, 2009
Priority date	Nov 17, 2008
Publication date	Oct 6, 2015
Grant date	Oct 6, 2015

Abstract

The number of handover-related failures that occur in a communication system may be reduced by taking target access point conditions into account when declaring radio link failure and/or by delaying certain handover operations. In some aspects, criteria for radio link failure detection and access terminal-controlled mobility may take into account access point parameters related to neighboring cells that may be available as mobility targets. For example, filtering mechanisms for detecting radio link failure based on radio layer problem reports may also take into account the availability of various neighbor access points and their measured signal strengths. In addition, a handover command may be sent earlier than in conventional systems (e.g., the handover command may be sent even though the target access point is weaker than the source access point) and include an indication that instructs the access terminal to delay handover until a specified condition is met. For example, handover may be delayed until the target access point becomes stronger than the source access point.

First claim

What is claimed is:

1. A method of communication, comprising:
receiving a handover message at an access terminal, wherein the handover message identifies a plurality of access points that have been prepared for handover, and wherein the handover message comprises configuration information for the plurality of access points that have been prepared for handover;
receiving, prior to a determination of signal conditions indicating handover of the access terminal, an advance handover…

Assignees

• Tenny Nathan E
• Agashe Parag A
• Prakash Rajat
• Qualcomm Inc

Inventors

• Tenny Nathan E
• Agashe Parag A
• Prakash Rajat

Classifications

• H04W36/362

  Electricity · mapped topic

• H04W36/02

  Electricity · mapped topic

• H04W36/00833

  Electricity · mapped topic

• H04W36/08

  Electricity · mapped topic

• H04W36/302 Primary

  Electricity · mapped topic