Wireless network system and connecting method thereof

• US 9,386,613 B2
• Filed: 01/17/2014
• Issued: 07/05/2016
• Est. Priority Date: 03/20/2013
• Status: Active Grant

• Current Assignee: Realtek Semiconductor Corp.
• Original Assignee: Realtek Semiconductor Corp.
• Inventors: Hsu, Chin-Yu, Yen, Kuang-Yu
• Primary Examiner(s): Alia, Curtis A
• Application Number:
  US14/158,243
• Publication Number:
  US 20140286323A1
• Time in Patent Office: 900 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/12 Detection or prevention of fraud
• CPC Class Codes: H04W 12/122 Counter-measures against attacks; Protection against rogue devices
• CPC Class Codes: H04W 12/73 Access point logical identity
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A wireless network system and a connecting method thereof are provided. The wireless network system includes a Wi-Fi apparatus and a communication apparatus. The Wi-Fi apparatus provides a Service Set Identifier (SSID). The SSID includes a first identifier value and a second identifier value, and the second identifier value is derived from the first identifier value by a hash function. After searching the SSID of the Wi-Fi apparatus, the communication apparatus determines that a value derived from the first identifier value of the SSID by the hash function is equal to the second identifier value, and then establishes a Wi-Fi authenticating connection with the Wi-Fi apparatus according to a connection password. The Wi-Fi apparatus establishes a data transmission connection with the communication apparatus after determining that the communication apparatus is legal according to the Wi-Fi authenticating connection.

Claims

1. A connecting method for use in a wireless network system, the wireless network system comprising a Wi-Fi apparatus and a communication apparatus, and the Wi-Fi apparatus possessing a connection password, the connecting method comprising the following steps of:

(a) enabling the Wi-Fi apparatus to provide a Service Set Identifier (SSID), wherein the SSID comprises a first identifier value and a second identifier value, and the second identifier value is derived from the first identifier value by a hash function;

(b) enabling the communication apparatus to search the SSID of the Wi-Fi apparatus;

(c) enabling the communication apparatus to determine that a value derived from the first identifier value of the SSID by the hash function is equal to the second identifier value;

(d) enabling the communication apparatus to generate the connection password and establish a Wi-Fi authenticating connection with the Wi-Fi apparatus according to the connection password;

(e) enabling the Wi-Fi apparatus to determine that the communication apparatus is legal according to the Wi-Fi authenticating connection; and

(f) enabling the communication apparatus to establish a data transmission connection with the Wi-Fi apparatus.

2. The connecting method as claimed in claim 1, further comprising the following steps after step (f):

(g) enabling the communication apparatus to transmit a configuration setting message to the Wi-Fi apparatus via the data transmission connection; and

(h) enabling the Wi-Fi apparatus to adjust a configuration setting of the Wi-Fi apparatus according to the configuration setting message.

3. The connecting method as claimed in claim 1, wherein step (d) further comprises the following step of:

(d1) enabling the communication apparatus to generate the connection password according to the SSID and a Media Access Control Address of the Wi-Fi apparatus.

4. The connecting method as claimed in claim 1, wherein step (d) further comprises the following steps of:

(d1) enabling the communication apparatus to receive a connection signal from the Wi-Fi apparatus;

(d2) enabling the communication apparatus to determine that the connection signal has a main signal strength;

(d3) enabling the communication apparatus to communicate with the Wi-Fi apparatus according to the main signal strength; and

(d4) enabling the communication apparatus to generate the connection password and establish the Wi-Fi authenticating connection with the Wi-Fi apparatus according to the connection password.

5. The connecting method as claimed in claim 1, wherein each of the first identifier value and the second identifier value is respectively independent and different from the connection password.

6. The connecting method as claimed in claim 1, wherein the first identifier value and the second identifier value are different in length.

7. A wireless network system, comprising:

a Wi-Fi apparatus, having a connection password and being configured to provide a Service Set Identifier (SSID), wherein the SSID comprises a first identifier value and a second identifier value, and the second identifier value is derived from the first identifier value by a hash function; and

a communication apparatus, being configured to search the SSID of the Wi-Fi apparatus and determine that a value derived from the first identifier value of the SSID by the hash function is equal to the second identifier value; and

wherein the communication apparatus is further configured to establish a Wi-Fi authenticating connection with the Wi-Fi apparatus according to a connection password after generating the connection password, and the Wi-Fi apparatus is further configured to establish a data transmission connection with the communication apparatus after determining that the communication apparatus is legal according to the Wi-Fi authenticating connection.

8. The wireless network system as claimed in claim 7, wherein the communication apparatus is further configured to transmit a configuration setting message to the Wi-Fi apparatus via the data transmission connection, and the Wi-Fi apparatus is further configured to adjust a configuration setting of the Wi-Fi apparatus according to the configuration setting message.

9. The wireless network system as claimed in claim 7, wherein the communication apparatus is further configured to generate the connection password according to the SSID and a Media Access Control Address of the Wi-Fi apparatus.

10. The wireless network system as claimed in claim 7, wherein the communication apparatus is further configured to receive a connection signal from the Wi-Fi apparatus and determine that the connection signal has a main signal strength, the communication apparatus is further configured to communicate with the Wi-Fi apparatus according to the main signal strength, and the communication apparatus is further configured to establish the Wi-Fi authenticating connection with the Wi-Fi apparatus according to the connection password after generating the connection password.

11. The wireless network system as claimed in claim 7, wherein each of the first identifier value and the second identifier value is respectively independent and different from the connection password.

12. The wireless network system as claimed in claim 7, wherein the first identifier value and the second identifier value are different in length.