Communication system, apparatus, method, and recording medium for mobile communication

• US 6,618,596 B1
• Filed: 06/25/1999
• Issued: 09/09/2003
• Est. Priority Date: 06/29/1998
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Uchida, Wataru
• Primary Examiner(s): VUONG, QUOCHIEN B
• Application Number:
  US09/344,080
• Time in Patent Office: 1,537 Days
• Field of Search: 455/12.1, 455/13.1, 455/13.4, 455/427, 455/522, 455/67.3, 455/345, 370/252, 370/468
• US Class Current: 455/522
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate

Abstract

A mobile communication system in which communication is performed between a base station and a mobile communication terminal apparatus includes a transmission/reception section, a mobile communication terminal apparatus, and a base station. The mobile communication terminal apparatus has a transmission/reception section for transmitting/receiving data between the base station and the mobile communication terminal apparatus, a measuring section for measuring the moving speed of the mobile communication terminal apparatus, and a data transfer rate designation section for instructing the base station to change the data transfer rate in communication in accordance with the moving speed of the mobile communication terminal apparatus which is measured by the measuring section. The base station controls the data transfer rate to perform communication at the data transfer rate designated by the mobile communication terminal apparatus.

Claims

1. A mobile communication system in which communication is performed between a base station and a mobile communication terminal apparatus, comprising:

a mobile communication terminal apparatus having a transmission/reception section for transmitting/receiving data between said base station and said mobile communication terminal apparatus, a measuring section for measuring a moving speed of said mobile communication terminal apparatus, and a data transfer rate designation section for instructing said base station to change a data transfer rate in communication in accordance with a moving speed of said mobile communication terminal apparatus which is measured by said measuring section; and

a base station for controlling the data transfer rate to perform communication at the data transfer rate designated by said mobile communication terminal apparatus.

2. A mobile communication apparatus for a mobile communication terminal apparatus for performing communication through a base station, comprising:

a transmission/reception section for transmitting/receiving data between said base station and said mobile communication terminal apparatus;

a measuring section for measuring a moving speed of said mobile communication terminal apparatus; and

a data transfer rate designation section for instructing said base station to change a data transfer rate in communication in accordance with a moving speed of said mobile communication terminal apparatus which is measured by said measuring section,

wherein communication with said base station is performed at a data transfer rate permitted in accordance with the moving speed of said mobile communication terminal apparatus.

3. An apparatus according to claim 2, wherein said apparatus further comprises a satellite reception section for receiving electric waves from a plurality of measurement satellites, and said measuring section calculates a current position of said mobile communication terminal apparatus at predetermined time intervals from the electric waves received by said satellite reception section, and measures the moving speed of said mobile communication terminal apparatus on the basis of changes in calculated current position over time.

4. An apparatus according to claim 2, wherein said apparatus further comprises a storage section storing a table in which the moving speed of said mobile communication terminal apparatus which is measured by said measuring section is stored in correspondence with a maximum data transfer rate permitted in accordance with the moving speed, reads out a permitted maximum data transfer rate corresponding to the moving speed measured by said measuring section from said storage section, and instructs said base station through said data transfer rate designation section to perform communication at the permitted maximum data transfer rate.

5. An apparatus according to claim 2, wherein said apparatus further comprises an input section for inputting a data transfer rate, and instructs said base station through said data transfer rate designation section to make a change to the data transfer rate input by said input section when the data transfer rate input by said input section is lower than a permitted maximum data transfer rate corresponding to the moving speed measured by said measuring section.

6. An apparatus according to claim 2, wherein said mobile communication terminal apparatus comprises:

a global positioning system reception section for receiving electric waves from measurement satellites;

a position measuring section for measuring a current position of said mobile communication terminal apparatus at predetermined time intervals on the basis of the received satellite electric waves; and

a moving speed calculation section/storage section for calculating a moving speed of said mobile communication terminal apparatus from changes in position measured by said position measuring section over time, and storing the moving speed.

7. A communication method of performing communication between a base station and a mobile communication terminal apparatus, comprising:

the transmission/reception step of transmitting/receiving data between said base station and said mobile communication terminal apparatus;

the measuring step of measuring a moving speed of said mobile communication terminal apparatus;

the data transfer rate designation step of instructing said base station to change a data transfer rate in communication in accordance with the moving speed of said mobile communication terminal apparatus which is measured in the measuring step; and

the communication step of performing communication at a data transfer rate permitted in accordance with the moving speed of said mobile communication terminal apparatus.

8. A recording medium on which a program for executing a communication method is recorded, the method comprising:

the transmission/reception step of transmitting/receiving data between said base station and said mobile communication terminal apparatus;

the measuring step of measuring a moving speed of said mobile communication terminal apparatus;

the data transfer rate designation step of instructing said base station to change a data transfer rate in communication in accordance with the moving speed of said mobile communication terminal apparatus which is measured in the measuring step; and

the communication step of performing communication at a data transfer rate permitted in accordance with the moving speed of said mobile communication terminal apparatus.

9. A mobile communication apparatus for a mobile communication terminal for performing communication through a base station, wherein said mobile communication terminal apparatus comprises;

a transmission/reception section for transmitting/receiving data between said base station and said mobile communication terminal apparatus;

a measuring section for measuring a moving speed of said mobile communication terminal apparatus;

a data transfer rate designation section for instructing said base station to change a data transfer rate in communication in accordance with a moving speed of said mobile communication terminal apparatus which is measured by said measuring section;

wherein communication with said base station is performed at a data transfer rate permitted in accordance with the moving speed of said mobile communication terminal apparatus;

a global positioning system reception section for receiving electric waves from measurement satellites;

a position measuring section for measuring a current position of said mobile communication terminal apparatus at predetermined time intervals on the basis of the received satellite electric waves;

a moving speed calculation section/storage section for calculating a moving speed of said mobile communication terminal apparatus from changes in position calculated by said position measuring section over time;

a data transfer rate input section for inputting a desired data transfer rate;

a moving speed/maximum data transfer rate correspondence table in which the moving speed of said mobile communication terminal apparatus is made to correspond to a maximum data transfer rate permitted in accordance with the moving speed;

a comparing section for reading out the moving speed of said mobile communication terminal apparatus from said moving speed calculation section/storage section, reading out a maximum data transfer rate in an air zone which corresponds to the current moving speed of said mobile communication terminal apparatus from said moving speed/maximum data transfer rate correspondence table, comparing the maximum data transfer rate correspondence table, comparing the maximum data transfer rate with the desired data transfer rate input from said data transfer rate input section, and outputting a lower data transfer rate;

an origination request section for requesting an outgoing call upon multiplexing the data transfer rate output from said comparing section on a data transfer rate designation field of a signal format as an origination request message; and

a transmission/section section for transmitting the origination request message from said origination request section through an antenna;

wherein communication with said base station is performed at a data transfer rate permitted in accordance with the moving speed of said mobile communication terminal apparatus.