公开(公告)号：BR0005403A

公开(公告)日：2001-08-07

申请号：BR0005403

申请日：2000-11-16

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BHATOOLAUL DAVID LAHIRI ,  CAO QIANG ,  CHARRIERE PATRICK ,  LIM SEAU SIAN

IPC: H04L12/70 ,  H04L12/933 ,  H04Q11/04 ,  H04W28/02 ,  H04W88/18 ,  H04W92/04 ,  H04Q7/22

Abstract: In a data packet, e.g. a PDU of the UMTS, a length indicator field (16) of variable granularity is created, depending on the exact length of the payload to be transmitted. An additional field (14) is provided, a single bit in length, to indicate the granularity of the length indicator field. This increases the resolution of the header, whilst keeping low an overhead of extra field bits. The method of the invention comprises: a. assessing (32, 34) the length of the data to determine the appropriate units, from a plurality of possible units, in which the length should be expressed; b. setting (36, 40) a granularity field to define said appropriate units in which the length of the data is to be indicated; and c. setting (38, 42) the length indicator field to indicate the data length.

公开(公告)号：AU724463B2

公开(公告)日：2000-09-21

申请号：AU1849999

申请日：1999-03-01

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ALLPRESS STEPHEN ALAN ,  CAO QIANG ,  FREIBERG LORENZ FRED ,  LIN JIE ,  WOOD STEVEN ANDREW

IPC: H04J3/00 ,  H04B7/26 ,  H04J3/16 ,  H04W36/00 ,  H04W48/12 ,  H04W72/14 ,  H04B7/212

Abstract: A time division multiple access communication system is disclosed, in which down link data are transmitted over a data channel in repeated time frames each containing a plurality of time slots. Down link set up information is transmitted over a control channel to indicate from which time slot a user terminal should extract data. Each frame on the data channel includes a user packet flag to indicate whether or not each time slot in the frame contains data. Each user terminal is responsive to the set up information and to the user packet flags to extract data from its assigned time slot in those frames which the slot is indicated to contain data.

公开(公告)号：CA2261548A1

公开(公告)日：1999-09-06

申请号：CA2261548

申请日：1999-02-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ALLPRESS STEPHEN ALAN ,  CAO QIANG ,  LIN JIE ,  FREIBERG LORENZ FRED ,  WOOD STEVEN ANDREW

IPC: H04J3/00 ,  H04B7/26 ,  H04J3/16 ,  H04W36/00 ,  H04W48/12 ,  H04W72/14 ,  H04L5/22

Abstract: A time division multiple access communication system is disclosed, in which down link data are transmitted over a data channel in repeated time frames each containing a plurality of time slots. Down link set up information is transmitted over a control channel to indicate from which time slot a user terminal should extract data. Each frame on the data channel includes a user packet flag to indicate whether or not each time slot in the frame contains data. Each user terminal is responsive to the set up information and to the user packet flags to extract data from its assigned time slot in those frames which the slot is indicated to contain data.

公开(公告)号：AU8958498A

公开(公告)日：1999-06-03

申请号：AU8958498

申请日：1998-10-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  FREIDBERG LORENZ FRED ,  READER DAVID JONATHON

IPC: H04B7/26 ,  H04B7/005

Abstract: Power control mechanisms control signal strength in a mobile wireless communication systems which communicate, at least initially, over different channels. By measuring the Signal-to-Interference ratio in signals received by a receiving station and returning that information to the transmitting station, an indication of appropriate power levels at which to transmit subsequent signals is given.

公开(公告)号：DE60132564D1

公开(公告)日：2008-03-13

申请号：DE60132564

申请日：2001-05-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  CHARRIERE PATRICK ,  DAVIES RICHARD LLEWELYN

IPC: H04B7/005 ,  H04B7/26

Abstract: A telecommunications network comprising a first unit and a second unit. The second unit measures the accuracy with which it receives data and transmits a value representing that accuracy to the first unit. The first unit adjusts its maximum transmission power to the second unit dependent upon said value.

公开(公告)号：DE69936401T2

公开(公告)日：2008-03-06

申请号：DE69936401

申请日：1999-12-10

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BHATOOLAUL DAVID LAHIRI ,  LIM SEAU SIAN ,  CAO QIANG

IPC: H04L29/08 ,  H04B7/005 ,  H04L1/16 ,  H04W28/04 ,  H04W52/48 ,  H04W52/50 ,  H04W74/08

Abstract: In a UMTS, the AICH is arranged to send, in addition to a signal acknowledging that a preamble from a mobile is at an acceptable strength, an additional signal indicating that the mobile is not currently permitted to send its message; this may apply when the BTS does not have hardware resources available. If the BTS can predict when the hardware will become available, the additional signal can include a time out (T) after which the mobile system can send its message signal.

公开(公告)号：DE60219276T2

公开(公告)日：2008-01-03

申请号：DE60219276

申请日：2002-01-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BERNHARD URS PETER ,  CAO QIANG ,  MUECKENHEIM JENS

IPC: H04L12/54 ,  H04L12/801 ,  H04L12/911 ,  H04W28/02 ,  H04W74/08

Abstract: The invention relates to random access packet transmission in a packet switched mobile network. It is an object to provide a new and improved approach to avoid problems of overload handling for a random access packet transmission in packet switched mobile networks and in particular, to limit the transmit delay of at least some selected data flows even in case of a long-term overload situation. It is suggested to employ on a respective random access packet transmission channel an admission control functionality (1a, 2a, 3a, 4a, 5a) depending on a request for the adding of a new data flow and/or to employ on the respective random access packet transmission channel a congestion control functionality (1c, 2c, 3c) depending on varying environments.

公开(公告)号：DE60033870D1

公开(公告)日：2007-04-19

申请号：DE60033870

申请日：2000-01-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  LIN JIE ,  MUECKENHEIM JENS ,  SOELLNER MICHAEL

IPC: H04Q7/38

公开(公告)号：DE602004000324T2

公开(公告)日：2006-08-10

申请号：DE602004000324

申请日：2004-06-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  CHARRIERE PATRICK G V ,  LIM SEAU SIAN ,  SAPIANO PHILIP C

IPC: H04L12/56 ,  H04L1/18

Abstract: A method is provided of transmission of a data frame from a first station to a second station, in a code division multiple access (CDMA) telecommunications network. The network operates according to a hierarchical series of protocol processes including a physical layer process under the control of a radio link control (RLC) process. An indication of when a data frame is passed to the physical layer process for transmission to the second station is sent to the RLC process in the first station. Upon receipt of the indication the RLC process, a timer is started to time a predetermined period before again passing the data frame to the physical layer process for retransmission to the second station unless an acknowledgement of receipt from the second station is received.

公开(公告)号：DE69829537T2

公开(公告)日：2006-02-16

申请号：DE69829537

申请日：1998-10-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  FREIBERG LORENZ FRED ,  READER DAVID JONATHAN

IPC: H04L12/56 ,  H04Q7/38