Cellular broadcast enhancements for inter-system mobility
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United States of America Patent
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Jun 21, 2016
Grant Date -
Feb 5, 2015
app pub date -
Jul 16, 2014
filing date -
Jul 31, 2013
priority date (Note) -
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Abstract
Methodologies and apparatus to support interworking operations between a cellular radio area network (RAN) and a wireless local area network (WLAN) utilizing broadcast RAN assistance information. In various embodiments, a RAN (such as a LTE/LTE-advanced RAN) transmits RAN assistance information to a multimode user equipment (UE) for use in network selection and traffic steering operations. Certain parameters, such as RAN load assistance information, may be transmitted in a first format or a second, less granular format that changes relatively infrequently over time as compared to the first format. A system information broadcast procedure utilizing a paging message is employed to transmit information in the second format. The paging message may include a change notification flag that triggers a UE to initiate a system information acquisition procedure to a retrieve system information message(s) including the relevant interworking parameters.
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