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公开(公告)号：DE60104322D1
公开(公告)日：2004-08-19
申请号：DE60104322
申请日：2001-03-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU , JOSHI NIRANJAN SUDHIR , KADABA SRINIVAS R , KOGIANTIS ACHILLES GEORGE , RUDRAPATNA ASHOK N , SUNAY MEHMET OGUZ , SUNDARAM GANAPATHY SUBRAMANIAN , VITEBSKY STANLEY
Abstract: Disclosed is a method of integrating voice and data services onto a same frequency channel using available transmit power information to determine data rates, wherein the available transmit power information indicates an amount of transmit power available for future data transmissions over one or more data channels. In a "distributed" embodiment, a transmitter or base station transmits, via a forward link, an available power message to a receiver or mobile-telephone indicating an amount of available transmit power at some future time t+z. The mobile-telephone performs signal-to-interference measurements corresponding to the received forward link and received interference, and uses such signal-to-interference measurements and the available power message to determine a data rate that can be supported by the mobile-telephone. Preferably, the determined data rate corresponds to a maximum data rate at which a minimum level of quality of service can be achieved at the mobile-telephone. In a "centralized" embodiment, the mobile-telephone transmits the signal-to-interference measurements to the base station, and the base station determines the data rate based on the available transmit power at future time t+z.
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公开(公告)号：DE60008701D1
公开(公告)日：2004-04-08
申请号：DE60008701
申请日：2000-12-12
Applicant: LUCENT TECHNOLOGIES INC
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公开(公告)号：DE60101769D1
公开(公告)日：2004-02-19
申请号：DE60101769
申请日：2001-03-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU , JOSHI NIRANJAN SUDHIR , KADABA SRINIVAS , KOGIANTIS ACHILLES GEORGE , RUDRAPATNA ASHOK N , SUNAY MEHMET OGUZ , SUNDARAM GANAPATHY SUBRAMANIAN , VITEBSKY STANLEY
Abstract: Disclosed is a method of integrating voice and data services onto a same frequency channel using available transmit power information to determine data rates, wherein the available transmit power information indicates an amount of transmit power available for future data transmissions over one or more data channels. In a "distributed" embodiment, a transmitter or base station transmits, via a forward link, an available power message to a receiver or mobile-telephone indicating an amount of available transmit power at some future time t+z. The mobile-telephone performs signal-to-interference measurements corresponding to the received forward link and received interference, and uses such signal-to-interference measurements and the available power message to determine a data rate that can be supported by the mobile-telephone. Preferably, the determined data rate corresponds to a maximum data rate at which a minimum level of quality of service can be achieved at the mobile-telephone. In a "centralized" embodiment, the mobile-telephone transmits the signal-to-interference measurements to the base station, and the base station determines the data rate based on the available transmit power at future time t+z.
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公开(公告)号：DE60100981D1
公开(公告)日：2003-11-20
申请号：DE60100981
申请日：2001-06-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU , KADABA SRINIVAS R , ULLAH KHAN FAROOQ , NANDA SANJIV , SUNAY MEHMET OGUZ , SUNDARAM GANAPATHY SUBRAMANIAN
Abstract: Data rate determination is provided in a system where the available power fraction and available Walsh codes in each active leg are dynamically changing over time. This method adapts the rate (modulation and coding) based on the combined resource (power & code space) levels seen at each cell. The method results in maximization of the rate supportable by each cell given their resource constrained situation while meeting the constraints of target packet or frame error rate and orthogonality. Furthermore, improved fast cell selection by the mobile results due to this approach that is based on knowledge of combined resource (power & code space) levels across the cells in the active set.
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公开(公告)号：DE60104203T2
公开(公告)日：2005-07-28
申请号：DE60104203
申请日：2001-11-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DAS ARNAB , GOPALAKRISHNAN NANDU , KHAN FAROOQ ULLAH
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Patent Agency Ranking
公开(公告)号：ES2236141T3
公开(公告)日：2005-07-16
申请号：ES01304723
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
Abstract: Un método para determinar una tasa de datos para un canal de comunicaciones de enlace descendente compartido por una pluralidad de unidades inalámbricas (AT) para comunicación con una estación base (BS), en el que se adapta dicha tasa de datos (R1-R3 en 22a-q) basándose en información de realimentación (R1-R3 en 20a- e) de al menos una de las unidades inalámbricas (AT), caracterizándose dicho método por: recibir, a una tasa de realimentación, información de realimentación (R1-R3 en 20a-e) de al menos una unidad inalámbrica dada para calcular la tasa de datos (R1-R3 en 22a-q); y adaptar, a una tasa de adaptación diferente de la tasa de realimentación, dicha tasa de datos basándose en dicha información de realimentación, para que al menos la unidad inalámbrica dada la use en dicho canal de comunicaciones de enlace descendente.
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公开(公告)号：DE60100981T2
公开(公告)日：2004-08-12
申请号：DE60100981
申请日：2001-06-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU , KADABA SRINIVAS R , ULLAH KHAN FAROOQ , NANDA SANJIV , SUNAY MEHMET OGUZ , SUNDARAM GANAPATHY SUBRAMANIAN
Abstract: Data rate determination is provided in a system where the available power fraction and available Walsh codes in each active leg are dynamically changing over time. This method adapts the rate (modulation and coding) based on the combined resource (power & code space) levels seen at each cell. The method results in maximization of the rate supportable by each cell given their resource constrained situation while meeting the constraints of target packet or frame error rate and orthogonality. Furthermore, improved fast cell selection by the mobile results due to this approach that is based on knowledge of combined resource (power & code space) levels across the cells in the active set.
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公开(公告)号：DE60307165T2
公开(公告)日：2007-07-05
申请号：DE60307165
申请日：2003-03-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU
Abstract: A method of generating coded user ID information that is combined with CRC codes and the result is appended to signaling information. The CRC codes are generated from the signaling information. The resulting codeword is transmitted over shared signaling channels to various users of a communication system. The resulting codeword is such that the likelihood of users attempting to decode codewords not intended for them is significantly reduced.
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公开(公告)号：DE60307165D1
公开(公告)日：2006-09-14
申请号：DE60307165
申请日：2003-03-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU
Abstract: A method of generating coded user ID information that is combined with CRC codes and the result is appended to signaling information. The CRC codes are generated from the signaling information. The resulting codeword is transmitted over shared signaling channels to various users of a communication system. The resulting codeword is such that the likelihood of users attempting to decode codewords not intended for them is significantly reduced.
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公开(公告)号：DE60111189T2
公开(公告)日：2006-03-23
申请号：DE60111189
申请日：2001-11-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GOPALAKRISHNAN NANDU , KADABA SRINIVAS R , RUDRAPATNA ASHOK N , SUNDARAM GANAPATHY SUBRAMANIAN
Abstract: Efficient data communication in wireless communication system is provided by using centralized control of data communications, such as packet switched services, over the uplink channel (mobile station (MS) to base station (BS)). A multiple access protocol is used where packet data mobile stations make requests for uplink channel resources. The request messages transmitted by the MSs inform the BS of service parameters. Examples of such service parameters are available transmit power at the MS, the amount of data to transmit and Quality of Service (QoS). The BS then processes the received request messages and performs interference management calculations to determine the portion of the BS's receive power budget that can be allocated to the data user requesting service. These calculations are used to control the amount of interference seen at the base station, to assign a data rate to the user and to aid scheduling algorithms in computing service order priorities. Any scheduling algorithm may be used; for example, scheduling may be based on the amount of data to be transmitted, the age of the data or the service priority associated with the mobile station. The interference control is used to prevent the occurrence of catastrophic levels of interference while maximizing the utilization of resources on the uplink.
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