Detection of early inter-radio access technology (IRAT) handover triggering

Patent metadata

Field	Value
Publication number	US-9155018-B2
Application number	US-201313792769-A
Country	US
Kind code	B2
Filing date	Mar 11, 2013
Priority date	Apr 23, 2010
Publication date	Oct 6, 2015
Grant date	Oct 6, 2015

Abstract

A device detects poor coverage associated with a source radio access technology (RAT) with which the device is connected, and connects to a target RAT. The device also measures the source RAT for a time period after connecting to the target RAT, and sends, based on the measurements, one or more measurement reports to the target RAT, where the target RAT forwards the one or more measurement reports to the source RAT. Alternatively, or additionally, the target RAT may detect that the handover was triggered too early and may inform the source RAT or command the UE to return to the source RAT. The device further stops the measuring and the sending when the time period expires. In this way, IRAT handover parameters may be automatically or manually tuned to minimize the number of handovers triggered too early, which may result in a more efficient cell configuration.

First claim

What is claimed is:

1. A method in a target radio access technology (RAT) network node for detecting a too early triggered inter-RAT handover of a user equipment from a source RAT to a target RAT, the method comprising the steps of:
instructing the user equipment to measure the source RAT during a period of time while being connected to the target RAT;
instructing the user equipment to send, based on the measurements, one or more measurement reports to the target RAT node;
eva…

Assignees

• Ericsson Telefon Ab L M

Inventors

• Alonso-Rubio Jose
• Zetterberg Kristina

Classifications

• H04W88/06

  Electricity · mapped topic

• H04W36/0005 Primary

  Electricity · mapped topic

• H04W36/32 Primary

  Electricity · mapped topic

• H04W24/10

  Electricity · mapped topic

• H04W36/302

  Electricity · mapped topic