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公开(公告)号：JP2002027562A
公开(公告)日：2002-01-25
申请号：JP2001141476
申请日：2001-05-11
Applicant: LUCENT TECHNOLOGIES INC
Abstract: PROBLEM TO BE SOLVED: To provide improved scheduling of radio data communication. SOLUTION: On the basis of a channel condition or a data rate which are related to each mobile station, scheduling precedence is established for transmission of data to the mobile station in a cellular communication system. Each of the mobile stations can have different channel condition or data rate. The channel condition and the data rate which are related to each of the mobile stations may be set when the mobile station is firstly added to a mobile station list, or may be recalculated during a transmission period.
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2.发明专利
公开(公告)号：JP2002152849A
公开(公告)日：2002-05-24
申请号：JP2001274702
申请日：2001-09-11
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
IPC: H04B7/005 , H04B7/26 , H04W52/22 , H04W52/24 , H04W52/26 , H04W52/34 , H04W52/54 , H04Q7/38 , H04J13/00
Abstract: PROBLEM TO BE SOLVED: To disclose a method that uses transmission power information so as to decide a data rate thereby integrating a voice service and a data service on a same frequency channel in which the available transmission power information indicates an amount of transmission power available for future data transmission on one data channel or more. SOLUTION: A transmitter or a base station transmits an available power message denoting a quantity of available transmission power to a mobile phone for a prescribed future time via a forward link. The mobile phone performs signal-to-interference measurement corresponding to the received forward link and the received interference and decides a data rate supported by the mobile phone by using the signal to interference wave and the available power message. The decided data rate corresponds to a maximum data rate at which a minimum level of quality of service can be achieved at the mobile phone.
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公开(公告)号：JP2002044014A
公开(公告)日：2002-02-08
申请号：JP2001169185
申请日：2001-06-05
Applicant: LUCENT TECHNOLOGIES INC
Abstract: PROBLEM TO BE SOLVED: To identify a message group which can be used for transmitting by using previous messages. SOLUTION: As a message group contains the different number of messages, as a result, the messages from a smaller group can be expressed by using smaller bits than in the messages from a greater group. As the smallest group contains the messages accompanied by the highest possibility to be transmitted, the possibility of using the messages expressed by the smaller number of bits is maximized. The messages from the different groups are transmitted at different power level, and a receiver can determine the message group. As this result, the receiver identifies the messages by using previous messages, the power levels relating to the received messages, and the received message bits.
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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：AU5361099A
公开(公告)日：2000-05-04
申请号：AU5361099
申请日：1999-10-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： PATEL SARVAR , RAMZAN ZULFIKAR AMIN , SUNDARAM GANAPATHY SUBRAMANIAN
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Patent Agency Ranking
公开(公告)号：CA2282051A1
公开(公告)日：2000-04-20
申请号：CA2282051
申请日：1999-08-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： SUNDARAM GANAPATHY SUBRAMANIAN , PATEL SARVAR , RAMZAN ZULFIKAR AMIN
Abstract: The present invention solves the aforementioned inefficiencies by providing an encryption or cipher method that uses the same pseudorandom function twice rather than different pseudorandom functions. Additionally, the present invention uses hashing functions that are highly efficient. The hashing functions of the present invention are square hashing functions that square a sum of a key and a data string rather than using a multiplication. As a result the hashing operation only requires operations rather than the w2 operations required by the inefficient hashing functions used in the prior art.. Additionally, the present invention replaces the exclusive ORed operations of the prior art with modular "n" summing operations.
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公开(公告)号：DE602004002883D1
公开(公告)日：2006-12-07
申请号：DE602004002883
申请日：2004-02-20
Applicant: LUCENT TECHNOLOGIES INC
Abstract: The capacity of a reverse link is improved by realizing a scheme to effect sharp changes in pilot channel transmit power (PCTP) and data channel to pilot power ratio (DCPR), coordinated with the start of the data channel transmission. The change in pilot power and data channel to pilot power ratio is also applicable to mobiles that use multiple pilots and/or multiple antennas at the transmitter and/or receiver.
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公开(公告)号：DE60014855D1
公开(公告)日：2004-11-18
申请号：DE60014855
申请日：2000-11-20
Applicant: LUCENT TECHNOLOGIES INC
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公开(公告)号：CA2260683C
公开(公告)日：2003-03-18
申请号：CA2260683
申请日：1999-02-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： SUNDARAM GANAPATHY SUBRAMANIAN , PATEL SARVAR
Abstract: The present invention is a method for outputting larger bit size pseudo-rand om number z; that is cryptographically secure. Since larger bit size pseudo- random numbers are being outputted, larger bit size segments of messages may be encrypted resulting in a speedier encryption process than encryption processes of the prior art. In one embodiment, the present invention is a pseudo-random number generator defined by a modular exponenti al function xi = g xt-i mod p . The output of the pseudo-random number generator being a pseudo-random number zi comprising a j-1 bit size segment of xi. The value of j being less than or equal to m-2c (i.e., j~m-2c). In an embodiment of the present invention, the pseudo-random number zi includes the j least significant bits of xi excluding the least significant bit of xi .
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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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