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公开(公告)号：CA2307485A1
公开(公告)日：2000-11-14
申请号：CA2307485
申请日：2000-05-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KNISELY DOUGLAS N , KHAN FAROOQ ULLAH , MEDAPALLI KAMESWARA RAO , KUMAR SARATH , NANDA SANJIV
Abstract: A variable length sequence number is used to identify data units in a communication channel. The sequence number associated with the most recent data that has been received successfully and the sequence number expected with the next new data message to be received are examined to determine the minimum size sequence number necessary to unambiguously identify to the transmitter incorrectly received data that must be retransmitted in a later message. The receiver provides the transmitter with the sequence number associated with the last successfully received byte of data and the sequence number associated with the next expected byte of data. The receiver communicates this information to the transmitter using a NAK control message. The transmitter then uses the sequence number of the next byte of data to be transmitted and the information received in the control message from the receiver to determine the smallest number of bits necessary to represent the sequence numbers for both data transmissions and the retransmission of data that was not received properly by the receiver.
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公开(公告)号：DE60129658T2
公开(公告)日：2008-05-21
申请号：DE60129658
申请日：2001-06-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DAS ARNAB , KHAN FAROOQ ULLAH , NANDA SANJIV
Abstract: Disclosed is a method of sub-packet adaptation based on data rate. Specifically, the size of a sub-packet is adapted to a data rate at which the sub-packet is to be transmitted. In one embodiment, the sub-packet is size adapted to the data rate in a format that would allow such size adapted sub-packet to be soft combined with another sub-packet of a same or different size. The size adapted sub-packet may be transmitted prior to or after the other sub-packet.
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63.发明专利
公开(公告)号：ES2280320T3
公开(公告)日：2007-09-16
申请号：ES01307285
申请日：2001-08-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KHAN FAROOQ ULLAH , NANDA SANJIV
Abstract: Un método para la transmisión asíncrona de paquetes en una pluralidad de sub-paquetes, comprendiendo cada sub-paquete un señalizador del estado de la información, comprendiendo el método los siguientes pasos para cada paquete: (a) codificar y segmentar el paquete en una pluralidad de sub-paquetes, estando asociado cada sub-paquete con un señalizador (104) del estado de la información; (b) seleccionar el primer sub-paquete fijando el señalizador del estado de la información del primer sub-paquete en NUEVO definido como el comienzo de la información que se transmite por primera vez (106); (c) aplicar el sub-paquete seleccionado del paquete a transmitir a un algoritmo de programación, donde el algoritmo de programación determina el tamaño de cada sub-paquete a transmitir; (d) esperar a recibir una interrupción del algoritmo de programación, o una señal ACK (108); (e) al recibir la señal ACK, descartar los sub-paquetes restantes asociados con el paquete que se está transmitiendo, y pasar a un paquete subsiguiente, si lo hay (112); y (f) al recibir una interrupción del algoritmo de programación, transmitir el sub-paquete seleccionado, seleccionar otro sub-paquete (118), fijar el señalizador del estado de la información del sub-paquete seleccionado como CONTINUADO, definido como la continuación de la información transmitida anteriormente o la retransmisión de la información transmitida anteriormente que fue descodificada sin éxito (120), remitiendo el sub-paquete seleccionado al algoritmo de programación, y continuando en el paso c.
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公开(公告)号：DE69931107D1
公开(公告)日：2006-06-08
申请号：DE69931107
申请日：1999-07-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUMAR SARATH , NANDA SANJIV , VITEBSKY STANLEY
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.
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公开(公告)号：CA2341917C
公开(公告)日：2005-01-11
申请号：CA2341917
申请日：2001-03-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： NANDA SANJIV , CHANG KIRK K , LUO WEI , EJZAK RICHARD PAUL , BALACHANDRAN KRISHNA
Abstract: Unlike earlier methods and systems in which Radio Link Control (RLC) performance was characterized in terms of the throughput, and the size of th e higher layer Protocol Data Units (PDUs) or packets to be transferred was ignored, a method and apparatus is provided that is based on the delay of a higher layer PDU o r packet. A method and apparatus so based have less delay than a method and apparatus based on employing adaptive coding and modulation to achieve the greatest mean throughput of a data block.
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Patent Agency Ranking
公开(公告)号：DE69905649T2
公开(公告)日：2003-12-18
申请号：DE69905649
申请日：1999-05-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BALACHANDRAN KRISHNA , EJZAK RICHARD PAUL , NANDA SANJIV , SETH SHIV MOHAN , VITEBSKIY STANISLAV , WAUNG WILLIAM
Abstract: A system and method of implementing a radio link protocol completion oriented packet data communication system. A data backlog is described with a media access control layer controller and transmitting a BEGIN protocol data unit containing a flag transmitted to a receiver. A media access control layer transaction is initiated in response to the transmitting of the BEGIN protocol data unit.
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公开(公告)号：DE60006315D1
公开(公告)日：2003-12-11
申请号：DE60006315
申请日：2000-06-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUMAR SARATH , NANDA SANJIV , RUBIN HARVEY , VITEBSKY STANLEY
Abstract: A back haul architecture effectively reduces the reactivation times for both forward-link and reverse-link data transmissions over CDMA wireless communications systems, by relying on packet-mode transmissions over the back haul between a frame selection/distribution (FSD) function and the appropriate base stations for both forward-link data and reverse-link data. In particular, for the forward direction, the FSD function transmits forward-link data only to one base station (i.e., the primary base station), which is solely responsible for controlling the forward-link air interface with the corresponding mobile unit. As such, the forward link always operates in simplex mode for data transmissions, independent of how many base stations are operating in soft handoff for the reverse link with the same mobile unit. For the reverse direction, each base station that receives frames of reverse-link data from the mobile unit, assigns a time tag to the frame, divides the frame into one or more data packets, assigns a different sequence number to each data packet, and transmits the data packets to the FSD function over the back haul, all without first synchronizing time with any other base station that is also operating in reverse-link soft hand-off with that mobile unit. The FSD function (or preferably the radio link protocol (RLP) function) is then responsible for selecting packets of reverse-link data for subsequent processing (e.g., transmission to the network end of the connection). By limiting forward-link data transmissions to simplex mode and using packet-mode transmissions for reverse-link data, the need to first synchronize timing between the various base stations is eliminated for both forward-link and reverse-link data transmissions. As a result, reactivation delays are greatly reduced.
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公开(公告)号：DE69904113T2
公开(公告)日：2003-07-10
申请号：DE69904113
申请日：1999-05-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BALACHANDRAN KRISHNA , EJZAK RICHARD PAUL , NANDA SANJIV , SETH SHIV MOHAN , VITEBSKIY STANISLAV , WAUNG WILLIAM
Abstract: A system and method of implementing a radio link protocol and dynamic partial echo management for a transaction oriented packet data communication system. A data backlog is described with a media access control layer controller and transmitting a BEGIN protocol data unit transmitted to a receiver. A media access control layer transaction is initiated in response to the transmitting of the BEGIN frame.
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公开(公告)号：DE69904113D1
公开(公告)日：2003-01-09
申请号：DE69904113
申请日：1999-05-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BALACHANDRAN KRISHNA , EJZAK RICHARD PAUL , NANDA SANJIV , SETH SHIV MOHAN , VITEBSKIY STANISLAV , WAUNG WILLIAM
Abstract: A system and method of implementing a radio link protocol and dynamic partial echo management for a transaction oriented packet data communication system. A data backlog is described with a media access control layer controller and transmitting a BEGIN protocol data unit transmitted to a receiver. A media access control layer transaction is initiated in response to the transmitting of the BEGIN frame.
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公开(公告)号：AU748181B2
公开(公告)日：2002-05-30
申请号：AU4104799
申请日：1999-07-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUMAR SARATH , NANDA SANJIV , VITEBSKIY STANISLAV
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.
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