公开(公告)号：AU4104799A

公开(公告)日：2000-02-17

申请号：AU4104799

申请日：1999-07-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KUMAR SARATH ,  VITEBSKIY STANISLAV ,  NANDA SANJIV

IPC: H04B1/707 ,  H04L12/56 ,  H04W28/04 ,  H04W28/20 ,  H04W72/04 ,  H04W74/00 ,  H04W74/04 ,  H04W84/04 ,  H04Q7/22

Abstract: Bursts of additional bandwidth (e.g., one or more supplemental channels or a channel having variable bandwidth) is assigned to users (e.g., high-speed data users) in a cellular telecommunication system. A request for assignment of additional bandwidth may be an initial request, a continuation request for an on-going burst, or a retry requests after a previously rejected request. In any case, it is determined whether to grant or reject the request. If the request is rejected, instructions are given to submit a retry request after a specified back-off time. The present invention may be implemented using either an asynchronous approach or a synchronous approach. According to the asynchronous approach, all requests are handled asynchronously. According to the synchronous approach, initial requests are handled asynchronously, but continuation requests and retry requests are handled synchronously at epoch times that coincide with specific time slots.

公开(公告)号：BR9902728A

公开(公告)日：2000-01-18

申请号：BR9902728

申请日：1999-07-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KUMAR SARATH ,  NANDA SANJIV ,  VITEBSKIY SANISLAV

IPC: H04B1/707 ,  H04L12/56 ,  H04W28/04 ,  H04W28/20 ,  H04W72/04 ,  H04W74/00 ,  H04W74/04 ,  H04W84/04 ,  H04Q7/22

Abstract: Bursts of additional bandwidth (e.g., one or more supplemental channels or a channel having variable bandwidth) is assigned to users (e.g., high-speed data users) in a cellular telecommunication system. A request for assignment of additional bandwidth may be an initial request, a continuation request for an on-going burst, or a retry requests after a previously rejected request. In any case, it is determined whether to grant or reject the request. If the request is rejected, instructions are given to submit a retry request after a specified back-off time. The present invention may be implemented using either an asynchronous approach or a synchronous approach. According to the asynchronous approach, all requests are handled asynchronously. According to the synchronous approach, initial requests are handled asynchronously, but continuation requests and retry requests are handled synchronously at epoch times that coincide with specific time slots.

公开(公告)号：BR9803199A

公开(公告)日：1999-11-03

申请号：BR9803199

申请日：1998-08-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KUMAR SARATH ,  REGE KIRAN M ,  KUO WEN-YI

IPC: H04W36/18 ,  H04Q7/36

Abstract: The present invention increases the success rate of soft handoffs by enhancing the ability of a mobile-telephone to receive a handoff direction message that identifies the traffic channel being assigned to enable a candidate base station to communicate with the mobile-telephone. Specifically, the aforementioned ability of the mobile-telephone is enhanced by using the candidate base station to transmit the handoff direction message on a communication channel belonging to the candidate base station and being listened to by the mobile-telephone. In situations where signals transmitted from active set base stations have a low signal-to-noise ratio at the mobile-telephone, signals transmitted from the candidate base station may have a higher signal-to-noise ratio at the mobile-telephone. In these situations, the transmission of the HD messages from the candidate base station increases the likelihood that a copy of the handoff direction message will be successfully received by the mobile-telephone, thereby enhancing the success rate of soft handoffs.