公开(公告)号：JP2001268156A

公开(公告)日：2001-09-28

申请号：JP2001039293

申请日：2001-02-16

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DEMETRESCU CHRISTIAN ,  SAMARAS CONSTANTINOS ,  SAMUEL LOUIS GWYN ,  TATESH SAID ,  WU JIAN JUN

IPC: H04B7/26 ,  H04L1/00 ,  H04L1/16 ,  H04L29/06

Abstract: PROBLEM TO BE SOLVED: To provide link adaptation technology suitable for a packet exchange type mobile communication system. SOLUTION: A transmitting CODEC having plural operating modes is provided, the state of a received signal is monitored and corresponding to a change in the state of the received signal, a command for changing the operating mode of the transmitting CODEC is transferred.

公开(公告)号：JP2001217799A

公开(公告)日：2001-08-10

申请号：JP2000373756

申请日：2000-12-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BALACHANDRAN KRISHNA ,  NANDA SANJIV ,  SAMARAS CONSTANTINOS

IPC: H04J3/16 ,  H04B7/26 ,  H04Q7/36

Abstract: PROBLEM TO BE SOLVED: To efficiently and flexibly multiplex both a real time service and a non-real time service on a remote wireless data communication system. SOLUTION: A method and a system for reducing delay in radio communication are provided by using a system for a burst base access and assignment. A method for setting a communication channel uses a short burst (basically the slot of a time frame). Time is saved by flexibly and mutually independently maintaining uplink and downlink channels. Thus, time to be used for the purpose of trying to match all requests and responses with limited choices in previous protocols is reduced. As a result, delay to the mobile user is reduced and consistency in the use of the wireless service provider is improved.

公开(公告)号：JP2001103534A

公开(公告)日：2001-04-13

申请号：JP2000248126

申请日：2000-08-18

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DEMETRESCU CHRISTIAN ,  ILAS CONSTANTIN ,  SAMARAS CONSTANTINOS ,  SAMUEL LOUIS GWYN ,  SOMERVILLE FIONA CLARE A ,  WU JIAN JUN ,  YAN RAN-HONG

IPC: H04J3/00 ,  H04B7/26 ,  H04L12/56 ,  H04W36/34 ,  H04Q7/22

Abstract: PROBLEM TO BE SOLVED: To provide a packet exchange cellular radio communication hand-over system that can provide excellent QoS to RT transmission during hand-over in a GPRS and an EGPRS. SOLUTION: A cellular wireless communication system realizes hand-over of wireless transmission between a mobile station 32 and a cell of a network into wireless transmission between the cell of the network and other cell. The mobile station 32 has operation modes relating to the network as follows (a); a mobile station control autonomous re-selection mode where no measurement result is reported to the network, (b); mobile station control autonomous cell re-selection mode where the report of measurement result is transmitted to the network, (c); a network control cell re-selection mode where the mobile station reports the measurement result to the network, and (d); a network control real time cell selection mode where the mobile station reports the measurement result to the network. In the mode (c), the mobile station 32 can transmit a packet cell revision request message to the network in response to a local standard.