公开(公告)号：JP2000152343A

公开(公告)日：2000-05-30

申请号：JP31972399

申请日：1999-11-10

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MEYERS MARTIN HOWARD ,  NALLEPILI S RAMESH ,  WANG JIAN-REN ,  WU XIAO CHENG

IPC: H04B7/005 ,  H04L12/28 ,  H04W52/50 ,  H04W74/08 ,  H04Q7/38 ,  H04Q7/22 ,  H04Q7/28

Abstract: PROBLEM TO BE SOLVED: To provide a method for reducing the collision amount of access messages on a random access channel(RACH) in an opposite direction by a plurality of mobile stations which are about to obtain simultaneous accesses in the wireless communications system. SOLUTION: A probe message, shorter than an access message in place of the access message, is transmitted through a RACH. The period of use for the RACH by the transmission of the probe message is shorter than that by the transmission of the access message, and the chances for collision with other probe messages can be reduced. Then the access message is sent through a traffic channel or a control channel designated by a base station receiving the probe signal. Alternative method offer data burst being transmitted trough a designated traffic channel or control channel.

公开(公告)号：ID25748A

公开(公告)日：2000-11-02

申请号：ID991040

申请日：1999-11-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MEYERS MARTIN HOWARD ,  NALLEPILI S RAMESH ,  WANG JIAN-REN ,  WU XIAO CHENG

IPC: H04B7/005 ,  H04L12/28 ,  H04W52/50 ,  H04W74/08 ,  H04B7/00

Abstract: Disclosed is a method for significantly reducing the amount of collisions of access messages on reverse link Random Access Channels (RACH) by multiple mobile-stations attempting to gain system access concurrently, thereby greatly improving access performance in wireless communications system using existing multiple access schemes. The improvement is achieved by transmitting a probe message instead of an access message over the RACH, wherein the probe message is shorter in length than the access message. Transmission of the probe messages utilizes less of the RACH than the longer access messages, thereby reducing the chance of collisions with other probe messages. The access message is subsequently sent on a traffic channel or a control channel designated by a base station receiving the probe message. Alternately, a data burst is transmitted over the designated traffic channel or control channel.

公开(公告)号：AU5830599A

公开(公告)日：2000-05-18

申请号：AU5830599

申请日：1999-11-05

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MEYERS MARTIN HOWARD ,  NALLEPILI S RAMESH ,  WANG JIAN-REN ,  WU XIAO CHENG

IPC: H04B7/005 ,  H04L12/28 ,  H04W52/50 ,  H04W74/08 ,  H04Q7/38

Abstract: Disclosed is a method for significantly reducing the amount of collisions of access messages on reverse link Random Access Channels (RACH) by multiple mobile-stations attempting to gain system access concurrently, thereby greatly improving access performance in wireless communications system using existing multiple access schemes. The improvement is achieved by transmitting a probe message instead of an access message over the RACH, wherein the probe message is shorter in length than the access message. Transmission of the probe messages utilizes less of the RACH than the longer access messages, thereby reducing the chance of collisions with other probe messages. The access message is subsequently sent on a traffic channel or a control channel designated by a base station receiving the probe message. Alternately, a data burst is transmitted over the designated traffic channel or control channel.