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公开(公告)号：DE60300255T2
公开(公告)日：2005-12-08
申请号：DE60300255
申请日：2003-03-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOGIANTIS ACHILLES GEORGE , RUDRAPATNA ASHOK N , SHARMA NARESH
Abstract: A method for allocating data rate to a stream of information to be transmitted over a communication channel of a communication system is provided. Modified union bounds are used to determine the channel characteristic experienced by each of the streams to select their respective data rates from an MCS that can be handled by the communication channel of the communication system. A method for allocating data rate to a stream of information to be transmitted over a communication channel of a communication system is provided. Modified union bounds are used to determine the channel characteristic experienced by each of the streams to select their respective data rates from an MCS that can be handled by the communication channel of the communication system.
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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：BR0103152A
公开(公告)日：2002-04-02
申请号：BR0103152
申请日：2001-07-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N , ZEGER LINDA MARLENE
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Patent Agency Ranking
公开(公告)号：BR0103287A
公开(公告)日：2002-03-26
申请号：BR0103287
申请日：2001-08-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N
Abstract: A system is provided for adapting and customizing a reverse link beam and a forward link beam that couple a particular mobile unit with a base station for transmitting/receiving data. The forward and reverse links may be dynamically customized for changing data rate requirements, changing position of the mobile unit relative to the base station, and changing SNR. According to one aspect of the invention, a plurality of adaptive antenna elements for the forward and reverse links are located at the base station. In addition to conventional beam forming hardware, the beam forming circuitry of each antenna are coupled to a mobile location detector for detecting the location of a mobile unit with which the base station is communicating. Once the location of the mobile unit has been determined, the beamformer steers a customized narrow, high gain beam toward that mobile unit to form the desired link.
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27.发明专利
公开(公告)号：CA2342282A1
公开(公告)日：2001-11-11
申请号：CA2342282
申请日：2001-03-26
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N , ZHU PENGFEI , LU MING
Abstract: A method and apparatus are provided for dynamically controlling a high speed wireless communication system to optimize utilization of system resources and thereby increase system throughput. The invention operates to determine an allocation of wireless transmission resources to each user application serve d by the wireless system in a manner to optimize transmission resources while meeting required QoS criteria for they served user application. After all user applications have been provided a transmission resource allocation in this manner, the total transmission resources so allocated are determined and compared with a ceili ng transmission resource level for the wireless system. A portion of the difference between the ceiling and currently allocated transmission resource levels is then made available, according to the invention, to the served user applications in proportion to the initial allocation provided each user application.
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公开(公告)号：DE60111343D1
公开(公告)日：2005-07-14
申请号：DE60111343
申请日：2001-12-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RUDRAPATNA ASHOK N
Abstract: An antenna array comprises at least two groups (101,103) of antennas where each group comprises at least two pairs of antennas (102, 104; 106, 108). Each of the pairs in a group contains orthogonally polarized antennas (102, 104) and at least one antenna (102) in a pair is similarly polarized to one antenna (106) in at least another pair in the group. The antenna array further comprises circuitry (120 - 128) coupled to the antenna groups to select and activate certain antennas in a group to enable the antenna array to operate in either a beam forming/steering mode, a diversity mode or a MIMO mode or any combination thereof. The antennas in the groups are activated based on the characteristics of the signals being transmitted or received by the antenna array.
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公开(公告)号：DE60111189D1
公开(公告)日：2005-07-07
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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公开(公告)号：DE60008701T2
公开(公告)日：2005-02-10
申请号：DE60008701
申请日：2000-12-12
Applicant: LUCENT TECHNOLOGIES INC
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