Method for controlling access in a radio communications system

• US 20040017789A1
• Filed: 06/12/2003
• Published: 01/29/2004
• Est. Priority Date: 08/21/2000
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Traynard, Jean-Michel, Höynck, Andreas, Schniedenharn, J?ouml;rg, Schindler, J?uuml;rgen, Papoutsis, Georgios, Köhn, Reinhard
• Application Number:
  US10/362,225
• Publication Number:
  US 20040017789A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access

Abstract

Several subscriber stations transmit a respective access sequence to a base station of a radio communications systems on a channel for random access. Afterwards, the radio communications system confirms reception of the access sequences on another channel by a message which selects a subscriber station that can subsequently transmit additional sequences to the base station on a physical access channel.

Claims

1. A method for access control in a radio communications system, in which

a number of subscriber stations (MS1, MS2) transmit a respective access sequence (s1, s3) to a base station (BS) in the radio communications system using a random access channel (RACH),

the radio communications system acknowledges reception of the access sequences (s1, s3) by means of a message on a further channel (FPACH), and

in the message, a subscriber station (MS1) is selected, which can then transmit further sequences to the base station (BS) on a physical access channel (PRACH).

2. The method as claimed in claim 1, in which the subscriber station (MS1) is selected by signalling the access sequence (s1).

3. The method as claimed in claim 1 or 2, in which the reception and/or non-reception of the access sequences (s1, s3) is carried out by means of a binary state pointer (1, 0).