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Method for location area update in multi-rat environment and method for transmitting/receiving paging information

  • US 10,356,705 B2
  • Filed: 08/25/2014
  • Issued: 07/16/2019
  • Est. Priority Date: 09/04/2013
  • Status: Active Grant
First Claim
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1. A method for transmitting a tracking area update (TAU) by a user equipment (UE), the method comprising:

  • receiving system information (SI) through a cellular interface from a multi-radio access technology radio entity (multi-RAT RE),wherein the SI includes a tracking area code (TAC) of the multi-RAT RE, andwherein the TAU is not performed through the cellular interface when a TAC of the UE is different from the TAC of the multi-RAT RE;

    receiving wireless local area network (WLAN) type information from an access point (AP);

    determining one of a first to third WLAN type on which the UE can perform the TAU based on the WLAN type information,wherein the WLAN type information for the first WLAN type includes information identifying whether the AP is physically collocated with the multi-RAT RE, wherein the WLAN type information for the second WLAN type includes information identifying whether the AP is physically connected to the multi-RAT RE, and wherein the WLAN type information for the third WLAN type includes information identifying whether the AP is physically collocated with the multi-RAT RE and physically connected to the multi-RAT RE; and

    performing the TAU through a WLAN interface based on the determined WLAN type.

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