Enhanced signal collision detection method in wireless communication system

• US 5,903,553 A
• Filed: 12/09/1996
• Issued: 05/11/1999
• Est. Priority Date: 12/08/1995
• Status: Expired due to Term

• Current Assignee: JVC Kenwood Corporation, NTT Data Communications Systems Corporation
• Original Assignee: Victor Company of Japan Limited (JVC Kenwood Corporation), NTT Data Communications Systems Corporation
• Inventors: Endo, Atsushi, Sakamoto, Atsushi
• Primary Examiner(s): Pham, Chi H.
• Assistant Examiner(s): Tran, Maikhanh
• Application Number:
  US08/762,124
• Time in Patent Office: 883 Days
• Field of Search: 370/286, 370/287, 370/445, 370/447, 370/338, 370/315, 340/147
• US Class Current: 370/338
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

A wireless communication system includes a repeater and a terminal device. The terminal device is connected to the repeater via a wireless communication channel. The terminal device includes a first section for converting a first electric signal into a first wireless signal, and transmitting the first wireless signal toward the repeater along the wireless communication channel. The terminal device includes a second section for receiving a second wireless signal from the repeater via the wireless communication channel, and converting the second wireless signal into a second electric signal. The terminal device includes a third section for deciding whether or not the first electric signal and the second electric signal are equal to each other to detect whether or not a signal collision occurs on the wireless communication channel.

Claims

1. A terminal device in a wireless communication system having a wireless communication channel, comprising:

first means for converting a first electric signal into a first wireless signal, and transmitting the first wireless signal along the wireless communication channel;

second means for receiving a second wireless signal along the wireless communication channel, and converting the second wireless signal into a second electric signal;

third means for deciding whether or not the first electric signal and the second electric signal are equal to each other to detect whether or not a signal collision occurs on the wireless communication channel;

fourth means for generating a third electric signal representative of occurrence of a signal collision on the wireless communication channel when the third means decides that the first electric signal and the second electric signal are not equal to each other; and

fifth means for generating the third electric signal from the first electric signal.

2. A wireless communication system comprising:

a repeater; and

a terminal device connected to the repeater via a wireless communication channel;

wherein the terminal device comprises;

a) first means for converting a first electric signal into a first wireless signal, and transmitting the first wireless signal toward the repeater along the wireless communication channel;

b) second means for receiving a second wireless signal from the repeater via the wireless communication channel, and converting the second wireless signal into a second electric signal; and

c) third means for deciding whether or not the first electric signal and the second electric signal are equal to each other to detect whether or not a signal collision occurs on the wireless communication channel;

d) fourth means for generating a third electric signal representative of occurrence of a signal collision on the wireless communication channel when the third means decides that the first electric signal and the second electric signal are not equal to each other; and

e) fifth means for generating the third electric signal from the first electric signal.

3. A wireless communication system comprising:

a repeater; and

a terminal device connected to the repeater via a wireless communication channel;

wherein the repeater comprises;

a) first means for receiving a first wireless signal from the terminal device via the wireless communication channel;

b) second means for converting an electric signal into a second wireless signal, and transmitting the second wireless signal toward the terminal device along the wireless communication channel;

c) third means for detecting whether or not the electric signal is present;

d) fourth means for disabling the second means, and repeating the first wireless signal and transmitting the first wireless signal toward the terminal device along the wireless communication channel when the third means detects that the electric signal is not present; and

e) fifth means for enabling the second means and inhibiting the fourth means from repeating the first wireless signal when the third means detects that the electric signal is present.