1. Inter-RAT Measurement Control Jungsoo Jung (jungsoo@samsung.com) Samsung Electronics Samsung Electronics grants a free, irrevocable license to 3GPP2 and its Organizational Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner's name any Organizational Partner's standards publication even though it may include all or portions of this contribution; and at the Organizational Partner's sole discretion to permit others to reproduce in whole or in part such contribution or the resulting Organizational Partner's standards publication. Samsung Electronics is also willing to grant licenses under such contributor copyrights to third parties on reasonable, non-discriminatory terms and conditions for purpose of practicing an Organizational Partner’s standard which incorporates this contribution. This document has been prepared by Samsung Electronics to assist the development of specifications by 3GPP2. It is proposed to the Committee as a basis for discussion and is not to be construed as a binding proposal on Samsung Electronics. Samsung Electronics specifically reserves the right to amend or modify the material contained herein and to any intellectual property of Samsung Electronics other than provided in the copyright statement above. Notice

2. Inter-RAT Measurement Issue Many operators are concerning possible battery impact due to frequent and uncontrollable inter-RAT measurement of dual mode AT/UE One typical scenario is a AT/UE staying in LTE coverage hole continuously scans LTE system A few companies already submitted their view on this issue in previous meetings C2K （ DO or 1x ） LTE LTE coverage hole A stationary AT/UE has the same RF environment u ntil it moves the other place, but continues scanning LTE system

3. Possible Solutions and Considerations Make the AT/UE adjust its measurement period if it stays in LTE coverage hole –LTE coverage hole can be defined as a place with LTE signal quality below a threshold –The measurement period adjustment can be either single step or multi step backoff, but we prefer single step –The backoff may delay acquisition of the target system, so the restriction on the measurement period should be restored quickly if the AT/UE moves out of the coverage hole

4. Make the AT/UE restore its inter-RAT measurement period to default value (i.e., no restriction) if it moves out of the coverage hole –This decision can be made based on location change in the source HRPD system E.g., change of serving AN is one clear example, but resolution of mobility seems too inaccurate in this case Further enhancement such as mobility detection based on serving AN signal quality change or other location service is FFS Allow some flexibility to the AT/UE –The AT/UE has best knowledge on the radio condition at its location –Control only the minimum measurement period