Method for connecting mobile stations to base station in radio communication system

• US 6,188,910 B1
• Filed: 09/14/1998
• Issued: 02/13/2001
• Est. Priority Date: 09/13/1997
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jeong, Joong-Ho, Park, Su-Won
• Primary Examiner(s): Maung, Nay
• Assistant Examiner(s): Vuong, Quochien B.
• Application Number:
  US09/152,562
• Time in Patent Office: 883 Days
• Field of Search: 455/509, 455/434, 455/515, 455/166.1, 455/528, 455/343, 455/510, 370/335, 370/342, 370/445
• US Class Current: 455/509
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access

Abstract

A method for preventing a collision among access requests made from a plurality of mobile stations requesting access to a base station in a radio communication system having a plurality of forward link and reverse link access channels. The base station allocates one of the forward link channels as a broadcast channel and transmits channel information about currently available reverse link access channels to the mobile stations via the broadcast channel. Based on the channel information received via the broadcast channel, one or more of the mobile stations transmits an access request signal to the base station via a selected one of the currently unoccupied reverse link access channels. Upon receipt of an access approval signal from the base station, the access requested mobile station accesses the base station via the selected unoccupied access channel.

Claims

1. A method for accessing a base station in a radio communication system, comprising the steps of:

(a) allocating, at said base station, one of a plurality of forward link channels as a broadcast channel, and transmitting channel information about currently available reverse link access channels to at least one mobile station via said broadcast channel;

(b) analyzing said channel information by said mobile station, and transmitting an access request signal to said base station via a selected one of unoccupied reverse link access channels based on said analyzed channel information;

(c) determining whether a collision occurs between said access request signal and another access request signal transmitted on said selected unoccupied reverse link access channel within a first predetermined time period;

(d) transmitting an access approval signal from said base station to said access requested mobile station when it is determined that no collision occurs within the first predetermined time period;

(e) establishing communication between said access requested mobile station and said base station upon receipt of said access approval signal; and

(f) returning to step (b) after a second predetermined time period has elapsed when said access approval signal is not received during the first predetermined time period.