Method for establishing connection between stations in wireless network

• US 20050163119A1
• Filed: 01/20/2005
• Published: 07/28/2005
• Est. Priority Date: 01/20/2004
• Status: Abandoned Application

• Current Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Original Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Inventors: Nishimura, Takuya, Ito, Yasuyuki
• Application Number:
  US11/040,737
• Publication Number:
  US 20050163119A1
• Time in Patent Office: Days
• US Class Current: 370/389
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A first station that supports both a long frame format and a short frame format becomes a parent station in order to communicate with a second station that supports only the long frame format. The first station uses two channels. The first station first transmits data in the short frame format over one of the two channels to initiate a communication with the second station, and waits for a response from the second station. Since the second station supports only a long frame format, the second station cannot recognize the frame and never responds to the first station. Thereafter, the first station transmits data in the long frame format over the other channel in order to establish a connection with the second station, and waits for a response from the second station. The second station can recognize the frame and, therefore, the connection can be established.

Claims

1. A connection method for establishing connection between a first station and a second station in a wireless network using different frame formats, the first station supporting both a first frame format and a second frame format, the second station supporting only the first frame format, the method comprising the steps of:

causing the first station to be a parent station for using two channels; and

transmitting, from the first station to the second station, data in the first frame format over one channel and transmitting data in the second frame format over the other channel so as to establish a connection with the second station.

4. A connection method according to claim 1 wherein the frame formats are of different lengths and wherein the first frame format is a short frame format and the second frame format is a long frame format.

2. A connection method for establishing connection between a first station and a second station in a wireless network using different frame formats, the first station supporting both a first frame format and a second frame format, the second station supporting only the first frame format, the method comprising the steps of:

causing the first station to be a parent station; and

transmitting, from the first station to the second station, data in the second frame format for a predetermined time period and thereafter transmitting data in the first frame format so as to establish a connection with the second station.

5. A connection method according to claim 2 wherein the different frame formats have different lengths and wherein the first frame format is a long frame format and the second frame format is a short frame format.

3. A connection method for establishing connection between a first station and a second station in a wireless network using different frame formats, the first station supporting both a first frame format and a second frame format, the second station supporting only the first frame format, the method comprising the steps of:

causing the first station to be a parent station;

transmitting, from the first station to the second station, data in the first frame format for a predetermined time period;

if the connection is unsuccessful, causing the first station to relinquish its role as the parent station so as to change to a listening mode;

causing the second station to be a parent station; and

transmitting, from the second station to the first station, data in the second frame format so as to establish a connection with the first station.

6. A connection method according to claim 3 wherein the different frame formats have different lengths and wherein the firs frame format is a short frame format and the second frame format is a long frame format.

7. A wireless network comprising a first station configured to support both a first frame format and a second frame format and a second station configured to support only one of said long or short frame formats the first station being further configured to be a parent station having two data channels such that the first station can transmit to the second station data in the first frame format over one channel and data in the second frame format over the other data channel so as to establish a connection with the second station.

8. A wireless network according to claim 7 wherein the first and second stations comprise PCs.

9. A wireless network according to claim 8 wherein the first frame format is a long frame format and the second frame format is a short frame format.