公开(公告)号：JP2003143645A

公开(公告)日：2003-05-16

申请号：JP2002298526

申请日：2002-10-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DAS ARNAB ,  KHAN FAROOQ ULLAH ,  SAMPATH ASHWIN ,  SU HSUAN-JUNG

IPC: H04Q7/38 ,  H04B7/26 ,  H04J11/00 ,  H04L1/00 ,  H04L1/18

Abstract: PROBLEM TO BE SOLVED: To provide an adaptive incremental redundancy (hybrid ARQ) method for retransmitting information through a communication channel of a wireless communication system. SOLUTION: Code multiplexing is used within fixed length frames in order to change the number of codes, modulation, and coding on retransmissions to provide the desired redundancy for successful decoding. The operation of adaptive hybrid ARQ in the code domain also provided finer granularity in which to efficiently transmitting redundancy. A method for retransmitting information in a communication channel having a plurality of fixed length frames each divided into a plurality of time slots of equal duration includes the step of code multiplexing a retransmission of a previous transmission within one of the fixed length frames using one or more of a plurality of codes. The number of codes used for the retransmission is variable based on the condition of the communication channel.

公开(公告)号：JP2003209891A

公开(公告)日：2003-07-25

申请号：JP2002298532

申请日：2002-10-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DAS AMAB ,  KHAN FAROOQ ULLAH ,  SAMPATH ASHWIN ,  SU HSUAN-JUNG

IPC: H04L1/00 ,  H04Q7/38

Abstract: PROBLEM TO BE SOLVED: To provide a method for processing control information in a wireless communication system. SOLUTION: In this method, portions of the control information are separately encoded and decoded, so that transmission format information for a corresponding data transmission can be determined with a reduced set of decoded control information. The control information is convolutionally coded using either a single set of tail bits or by judiciously dispersing the tail bits among different portions of the encoded signaling information. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2002158714A

公开(公告)日：2002-05-31

申请号：JP2001286734

申请日：2001-09-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ABRAHAM SANTOSH P ,  CHUAH MOOI CHOO ,  MEDAPALLI KAMESWARA RAO ,  SAMPATH ASHWIN

IPC: H04B7/26 ,  H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08 ,  H04W28/18 ,  H04W28/24 ,  H04W84/04 ,  H04W92/12 ,  H04W99/00

Abstract: PROBLEM TO BE SOLVED: To provide a method that efficiently identifies a size of each DCH in a payload part of a data frame in a node of the UMTS UTRAN(Universal Mobile Telecommunications System-Universal Terrestrial Radio Access Network) to exchange data with other node in a UTRAN network. SOLUTION: In the UMTS UTRAN wireless system, a wireless network element (e.g. a base station) exchanges information with other wireless network element (e.g. a wireless network controller) via a data frame (uplink or down link). Each data frame includes the payload part including a header part and a QoS class indicator field. For example, an 8-bit spare extension field of an UTRAN data frame (uplink or down link) is used to carry a 4-bit payload type indicator and a 4-bit QoS class indicator.

公开(公告)号：JP2001292098A

公开(公告)日：2001-10-19

申请号：JP2001046369

申请日：2001-02-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MONOGIOUDIS PANTELIS ,  REGE KIRAN M ,  SAMPATH ASHWIN

IPC: H04L1/00 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00 ,  H04W52/12 ,  H04W52/20 ,  H04W52/22 ,  H04W52/24

Abstract: PROBLEM TO BE SOLVED: To realize a reverse-link outer loop power control(ROLPC) based on a bit error rate BER that has adaptive compensation with respect to a BER target and takes the difference between the mean value and the median of the BER into account in a wireless communication system. SOLUTION: In the case of carrying out the ROLPC based on a BER after decoding, a user metric target is changed as a function of the 'signature' of a communication channel. The base station utilizes the ROLPC system using the BER after decoding for the user metric target. The ROLPC system uses either of an instantaneous value of the BER and a value weakly filtered to compare the target SNR with the target BER for the adjustment. The target BER value is changed as a function of a secondary statistic of the received SNR (e.g. variance, standard deviation). The secondary statistic of the received SNR represents the signature of a communication channel.

公开(公告)号：DE60132288T2

公开(公告)日：2009-01-02

申请号：DE60132288

申请日：2001-05-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GOPALAKRISHNAN NANDU ,  HU TECK H ,  KHAN FAROOQ ULLAH ,  KOGIANTIS ACHILLES GEORGE ,  MONOGIOUDIS PANTELIS ,  SAMPATH ASHWIN

IPC: H04L1/18 ,  H04L1/00

Abstract: A transport channel multiplexing system provides improved use of wireless resources in a shared data channel system. For example, the transport channel system reduces the amount of transport format information required for using a shared data channel, such as the actual number of packet data units in a transport channel of the shared data channel. Additionally, by scheduling or multiplexing coded sub-blocks from one or more transport channels over the shared data channel, the transport channel multiplexing system can provide improved integration with other important features, such as incremental redundancy, fast adaptation to channel conditions and transport channel dependent quality of service (QOS) control, to provide improved system performance.

公开(公告)号：DE60219572D1

公开(公告)日：2007-05-31

申请号：DE60219572

申请日：2002-06-06

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DAS ARNAB ,  KHAN FAROOQ ULLAH ,  SAMPATH ASHWIN ,  SU HSUAN-JUNG

IPC: H04L1/00 ,  H04Q7/38

公开(公告)号：CA2356416C

公开(公告)日：2006-06-06

申请号：CA2356416

申请日：2001-08-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ABRAHAM SANTOSH P ,  MEDAPALLI KAMESWARA RAO ,  CHUAH MOOI CHOO ,  SAMPATH ASHWIN

IPC: H04L12/66 ,  H04B7/26 ,  H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08 ,  H04W28/18 ,  H04W28/24 ,  H04W84/04 ,  H04W92/12 ,  H04W99/00

Abstract: In a UMTS (universal mobile telecommunications system) Terrestrial Radio Access Network (UTRAN) based wireless system, a wireless network element (e.g., a base station) exchanges information with another wireless network element (e.g., a radio network controller) via data frames (uplink or downlink). Each data frame comprising a header portion and a payload portion, which comprises a QoS class indicator field. Illustratively, the eight bit spare extension field of a UTRAN data frame (uplink or downlink) is used to convey a four bi t payload type indicator and a four bit QoS class indicator.

公开(公告)号：DE60300713T2

公开(公告)日：2006-05-04

申请号：DE60300713

申请日：2003-03-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DAS ARNAB ,  KHAN FAROOQ ULLAH ,  SAMPATH ASHWIN ,  SU HSUAN-JUNG

IPC: H04L12/56 ,  H04W48/12 ,  H04W52/00

Abstract: In an embodiment, a composite signaling message part is formed to include at least two segments (500), each segment (500) including data identifying a different user equipment (UE). In another embodiment, a different portion of a composite signaling message part is transmitted over at least one same time slot in each of the shared control channels; the part including at least two segments (510, 530) and each segment (510, 530) including data identifying a different user equipment (UE). In these embodiments, the part further includes a cyclic redundancy code (550), (CRC) generated by jointly encoding the at least two segments (510, 530). In a further aspect of the method, more than one shared control channel jointly carrying a signaling message are power controlled such that each shared control channel carrying more data associated with one of the UEs is power controlled in accordance with that UE. In a still further embodiment, the channelized code information for a dedicated control channel is divided between first and second parts of the shared control signals.

公开(公告)号：DE60300679T2

公开(公告)日：2006-05-04

申请号：DE60300679

申请日：2003-03-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DAS ARNAB ,  KHAN ULLAH FAROOQ ,  SAMPATH ASHWIN ,  SU HSUAN-JUNG

IPC: H04L12/56 ,  H04W48/12 ,  H04W52/00

Abstract: In an embodiment, a composite signaling message part is formed to include at least two segments (500), each segment (500) including data identifying a different user equipment (UE). In another embodiment, a different portion of a composite signaling message part is transmitted over at least one same time slot in each of the shared control channels; the part including at least two segments (510, 530) and each segment (510, 530) including data identifying a different user equipment (UE). In these embodiments, the part further includes a cyclic redundancy code (550), (CRC) generated by jointly encoding the at least two segments (510, 530). In a further aspect of the method, more than one shared control channel jointly carrying a signaling message are power controlled such that each shared control channel carrying more data associated with one of the UEs is power controlled in accordance with that UE. In a still further embodiment, the channelized code information for a dedicated control channel is divided between first and second parts of the shared control signals.

公开(公告)号：CA2330267C

公开(公告)日：2006-03-14

申请号：CA2330267

申请日：2001-01-05

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MONOGIOUDIS PANTELIS ,  REGE KIRAN M ,  SAMPATH ASHWIN

IPC: H04B7/005 ,  H04L1/00 ,  H04B7/26 ,  H04J13/00 ,  H04W52/12 ,  H04W52/20 ,  H04W52/22 ,  H04W52/24

Abstract: In a wireless communications system, a base station employs a bit error rate (BER) based Reverse Outer Loop Power Control (ROLPC) technique. The ROLPC techniqu e uses either instantaneous or weakly filtered values of the BER for compariso n with a BER target value for adjusting a target signal-to-noise ratio (SNR). The BER target value is varied as a function of a second order statistic (e.g. variance, standard deviation) of the received SNR. In another embodiment, a symbol error count based ROLPC technique uses adaptive SER targets. In particular, a base station uses a 2nd order statistic, e.g., standard deviation (variance), to identify, or act as a signature of, a particular cellular (wireless) communications environment. The base station monitors the standar d deviation of the symbol error count of a received signal (transmitted from a mobile station). The target signal-to-noise ratio ((E b/N0)T) of this received signal is adjusted as a function of the value of the standard deviation and the adjusted (E b/N0)T target is used to provide power control.