# US 2019/0173797 A1 · Method and apparatus for effective wireless lan selection

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- Number: US 2019/0173797 A1
- Document ID: US20190173797A1
- Status: Published application
- Kind: A1
- Application number: 16/266,300
- Filed: 2019-02-04
- Published: 2019-06-06
- Earliest claimed: 2013-05-20
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Sangsoo Jeong; Songyean Cho; Beomsik Bae
- Web page: https://patentgrep.com/patent/US20190173797A1

## CPC

- H04L 47/125: by balancing the load, e.g. traffic engineering
- H04W 40/02: Communication route or path selection, e.g. power-based or shortest path routing
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 48/18: Selecting a network or a communication service
- H04W 36/22: for handling the traffic
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method for selecting an access network in a terminal of a mobile communication system according to one embodiment of the present specification comprises the steps of: if traffic is generated in the terminal, selecting an access network according to the characteristics of the generated traffic and network selection policy information; and transmitting and receiving the generated traffic via the selected access network. According to the embodiment, the present invention adjusts priorities of accesses given to users and applications in a wireless communication system including heterogenerous networks, thereby reducing processes for reselecting an access network of a user terminal, and reducing the cases of unnecessarily accessing a network having a low priority or requiring high costs for a long time. Therefore, the present invention can enhance user convenience and improve communication efficiency.

## Claims

### Claim 1

A method for a terminal in a wireless communication system, the method comprising:
selecting a wireless local area network (WLAN) from at least one WLAN access network based on a first policy;
identifying whether a priority of the selected WLAN is higher than a priority of a cellular network for a packet data network (PDN) connection based on a second policy;
establishing the PDN connection over the selected WLAN or the cellular network based on a result of the identification; and
identifying, when the PDN connection is established over the selected WLAN, whether the selected WLAN meets a valid selection criteria in the first policy;
wherein selecting the WLAN comprises:
selecting, when it is identified that a connection over a WLAN associated with an S2a procedure is preferred by an operator related to the terminal based on the first policy, the WLAN supporting S2a connectivity from the at least one WLAN access network.