Personal digital assistant, wireless communication system and method of link establishment

• US 20030134659A1
• Filed: 11/20/2002
• Published: 07/17/2003
• Est. Priority Date: 03/30/2001
• Status: Abandoned Application

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Morimoto, Hiroyuki
• Application Number:
  US10/275,989
• Publication Number:
  US 20030134659A1
• Time in Patent Office: Days
• US Class Current: 455/556.1
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 48/14 using user query or user detection
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A transmitting/receiving part detects the current position of a portable telephone and sends the positional information to an access point management device, whereas when the access point management device receives the positional information and sends back the device address BD_ADDR of a stationary terminal present in the vicinity of the portable telephone, the transmitting/receiving part receives the device address BD_ADDR.

Claims

1. A personal digital assistant comprising:

transmitting means for detecting the current position of the personal digital assistant and for transmitting the positional information to an access point management device;

receiving means for receiving the device address of an access point near the personal digital assistant sent from the access point management device after it has received the positional information; and

link establishing means for establishing a bluetooth link with the access point by the use of the device address received by the receiving means.

2. The personal digital assistant according to claim 1, the link establishing means establishes the bluetooth link with the access point by performing a page sequence defined in the Bluetooth specifications.

3. A radio communication system comprising:

an access point management device that, based on positional information, retrieves the device address of an access point near a personal digital assistant; and

a personal digital assistant provided with transmitting means for detecting the current position of the personal digital assistant and for transmitting the positional information to the access point management device, receiving means for receiving therefrom the device address of the access point sent from the access point management device after it has received the positional information, and link establishing means for establishing a bluetooth link with the access point by the use of the device address received by the receiving means.

4. The radio communication system according to claim 3, the access point is a stationary terminal.

5. The radio communication system according to claim 3, the access point is a personal digital assistant.

6. A method of establishing link comprising the steps of:

detecting the current position of a personal digital assistant;

transmitting the information about the detected position to an access point management device;

receiving the device address of an access point near the personal digital assistant sent from the access point management device in response to the positional information; and

establishing a bluetooth link with the access point by the use of the device address.