IP communication system for wireless terminal and communication method for wireless terminal

• US 20050094616A1
• Filed: 11/29/2004
• Published: 05/05/2005
• Est. Priority Date: 07/03/2000
• Status: Abandoned Application

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Sakakura, Takashi
• Application Number:
  US10/997,991
• Publication Number:
  US 20050094616A1
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04L 61/4552 Lookup mechanisms between a plurality of directories; Synchronisation of directories, e.g. metadirectories
• CPC Class Codes: H04L 61/5084 Providing for device mobility network addressing or numbering for mobility support in wireless networks H04W8/26; mobile IP H04W80/04
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/0019 adapted for mobile IP [MIP]
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 80/02 Data link layer protocols
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

An IP communication system for wireless terminal which eliminates extra traffic to be used for data transfer so as to improve communication latency. The IP communication system for wireless terminal includes a control center, which controls a plurality of wireless terminals by way of a base station for communicating with an internet terminal over the Internet. The control center controls a plurality of IP addresses. The control center is provided with a database for storing the MAC addresses of wireless terminals controlled, the operating status of the respective wireless terminals controlled, and the identification of the respective base stations. The control center allocates one of the IP addresses available to a wireless terminal in the database in response to a request for communication between the wireless terminal and the internet terminal. The wireless terminal communicates with the internet terminal based on this IP address allocated.

Claims

1. (Cancelled)

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9. A communication method for wireless terminal, in which a wireless terminal communicates with a plurality of wireless terminals, the communication method for wireless terminal comprising:

transmitting a request for a broadcast communication on a channel;

receiving a ready message for a wireless terminal in the group in response to the request;

starting the broadcast communication upon reception of the ready message from the wireless terminal in the group; and

prohibiting other wireless terminals from accessing the channel during the broadcast communication.

10. A communication method for wireless terminal, in which a wireless terminal makes a communication with another wireless terminal, the communication method for wireless terminal comprising:

transmitting a request for continuing the communication on a channel for at least one given transmission period;

receiving an acknowledge message upon reception of the request for continuing the communication; and

prohibiting other wireless terminals form accessing the channel during the at least a given period.

11. A communication method for wireless terminal, in which a wireless terminal communicates with another wireless terminal, the communication method for wireless terminal comprising:

transmitting a request for occupying a plurality of channels by a wireless terminal;

allocating the plurality of channels to the wireless terminal; and

using the plurality of channels allocated in the allocating step.

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