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公开(公告)号：JP2002218004A
公开(公告)日：2002-08-02
申请号：JP2001112621
申请日：2001-04-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BALACHANDRAN KRISHNA , CHANG KIRK K , EJZAK RICHARD PAUL , LUO WEI , NANDA SANJIV
Abstract: PROBLEM TO BE SOLVED: To provide a method and device for communicating a message constituted of a data block through wireless communication in an incomplete transmission/reception channel state. SOLUTION: This method and device is based on the delay of a PDU and a packet in a much higher layer. Thus, it is possible to reduce the delay by automatically adopting modulation and encoding schemes for maximizing the mean value of the throughput of a data block.
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公开(公告)号：JP2001217799A
公开(公告)日：2001-08-10
申请号：JP2000373756
申请日：2000-12-08
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BALACHANDRAN KRISHNA , NANDA SANJIV , SAMARAS CONSTANTINOS
Abstract: PROBLEM TO BE SOLVED: To efficiently and flexibly multiplex both a real time service and a non-real time service on a remote wireless data communication system. SOLUTION: A method and a system for reducing delay in radio communication are provided by using a system for a burst base access and assignment. A method for setting a communication channel uses a short burst (basically the slot of a time frame). Time is saved by flexibly and mutually independently maintaining uplink and downlink channels. Thus, time to be used for the purpose of trying to match all requests and responses with limited choices in previous protocols is reduced. As a result, delay to the mobile user is reduced and consistency in the use of the wireless service provider is improved.
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公开(公告)号：JP2001036942A
公开(公告)日：2001-02-09
申请号：JP2000174769
申请日：2000-06-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUMAR SARATH , NANDA SANJIV , RUBIN HARVEY , VITEBSKY STANLEY
IPC: H04B7/005 , H04B7/26 , H04W36/18 , H04W52/12 , H04W52/54 , H04Q7/22 , H04J13/00 , H04L12/28 , H04Q7/28 , H04Q7/36
Abstract: PROBLEM TO BE SOLVED: To remarkably reduce reaction delay by determining whether or not each backward link data packet received from a first base station is to be contained in the reconstituted frame of backward link data through a data selecting function part on the basis of at least one of assigned time lag and assigned sequence number. SOLUTION: A forward link RLP transfer function is executed by a method distributed to a forward link RLP (BE/RLP) in the base station and a forward link RLP transfer function (FS/RLP) in a selective frame distributing function element. The FS/RLP function element divides incoming forward link data into RLP data unit size and assigns serial original RLP numbers to each segment. Continuously, the FS/RLP function element transfers the forward link data to the BS/RLP function element together with this serial number information. Physical layer framing is performed by the BS/RLP function element.
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公开(公告)号：JP2001007789A
公开(公告)日：2001-01-12
申请号：JP2000153294
申请日：2000-05-24
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CLOUTIER JOSEPH E , KNISELY DOUGLAS N , KUMAR SARATH , NANDA SANJIV
Abstract: PROBLEM TO BE SOLVED: To shorten the time for retransmitting an error information block (e.g. deteriorated frame) and to improve the throughput of a communication channel where information is transported by applying a data puncture operation to information transmitted by a communication system, based on information on a received signal. SOLUTION: A receiver 109 of a user device 106 receives an information block via a forward link 102. Feedback or error restoration data extracted by a processor 111 is contained in the received information block and it is decided whether previous information transmitted by the user device 106 is to be retransmitted. The user device 106 transmits appropriate decoding status data to information which is transmitted at present and time, when the information block is retransmitted is reduced. The insertion of decoding status data into transmitted information is called data puncture.
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公开(公告)号：JP2001007788A
公开(公告)日：2001-01-12
申请号：JP2000142465
申请日：2000-05-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KHAN FAROOQ ULLAH , KNISELY DOUGLAS N , KUMAR SARATH , MEDAPALLI KAMESWARA RAO , NANDA SANJIV
Abstract: PROBLEM TO BE SOLVED: To efficiently perform an automatic repetition request by making an identification number correspond to at least one unit of data to be transmitted. SOLUTION: On a receiver side, variables V(N) and V(R) are monitored. The variable V(N) shows a maximum sequence number, by which all the bytes of previous data are received without errors. V(R) shows the sequence number of subsequently new data byte, which is expected to be received from a transmitter. A variable VT(N) is a value of V(N), which is received the latest from the receiver in a control message sent from the receiver to the transmitter. A variable VT(R) is the latest value of the variable V(R) transmitted to the transmitter from the receiver in the control message. The variable V(S) is the sequence number allocated to the byte of next data, which is to be transmitted to the receiver from the transmitter.
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Patent Agency Ranking
公开(公告)号：JP2000236366A
公开(公告)日：2000-08-29
申请号：JP4487099
申请日：1999-02-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BALACHANDRAN KRISHNA , EJZAK RICHARD PAUL , NANDA SANJIV
Abstract: PROBLEM TO BE SOLVED: To obtain the device with increment redundancy which uses a time slot channel by generating a header having the sequence number of a data block signal of size fit to a subslot of a time slot signal and identifying the number of successively transmitted data block signals. SOLUTION: The transmission and communication system includes a flag marker (time slot signal generator) 150 which generates a byte stream (time slot signal) 155 having at least one subslot of fixed size, a rate 1/2 systematic vortex encoder (data block signal generator) 165 which generates a data block signal 170 of size fit to the time slot, and a header adder 210 which generates a header having the data block signal sequence number in a header for the time slot signal 155. A receiver 130 identifies the number of successively transmitted data block signals 170 by the header for the time slot signal 155.
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公开(公告)号：JP2000224665A
公开(公告)日：2000-08-11
申请号：JP2000015648
申请日：2000-01-25
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BUDKA KENNETH C , NANDA SANJIV , SCHEFCZIK HANS-PETER
Abstract: PROBLEM TO BE SOLVED: To provide a communication system, especially, radio communication system to use the strongest coding/modulating system to the quantity of applied payload bits. SOLUTION: Concerning this system, the quantity of payload bits applied in channel quality index (CQM) and block is considered. A transmitter uses one of (k) kinds of coding/modulating systems in the case of transmitting data on a radio data network. First of all, the transmitter selects a coding/modulating system C, for example, as a C/I measuring function (215). Continuously, the transmitter calculates the number B of blocks required for transmitting a data packet group D while using the coding/modulating system C (220). Besides, the transmitter calculates the number of blocks required for transmitting the data packet group D to each coding/modulating system stronger than the selected coding/modulating system C.
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公开(公告)号：JP2000049866A
公开(公告)日：2000-02-18
申请号：JP13591499
申请日：1999-05-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BALACHANDRAN KRISHNA , EJZAK RICHARD PAUL , NANDA SANJIV , SIV MOHAN SETH , SATONISLAV VITEBSKI , WILLIAM WAUN
Abstract: PROBLEM TO BE SOLVED: To suppress the probability of vagueness in the case of performing intermittent packet processing by performing medium access control layer processing corresponding to the start protocol data unit transmission of a receiver. SOLUTION: A medium access control layer controller MLC 190 determines the data back logs of buffers TXB0 and TXB1 and transmits a start protocol data unit(PDU) to a receiver 167. Further, the medium access control layer processing is executed as well corresponding to the transmission of the start PDU. Besides, the determined data back log is displayed on a medium access controller by a network layer 160. After the start PDU is transmitted, data transmission is stopped and a reception notice message from the receiver 167 is waited. At such a time, the reception notice message from the receiver 167 is controlled by a sub channel controller 185. Thus, wireless link protocol and dynamic partial echo management is executed to a processing orineted packet data communication system.
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公开(公告)号：JP2001211117A
公开(公告)日：2001-08-03
申请号：JP2000373762
申请日：2000-12-08
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BALACHANDRAN KRISHNA , DEMETRESCU CHRISTIAN , EJZAK RICHARD PAUL , NANDA SANJIV , XIE HONG
Abstract: PROBLEM TO BE SOLVED: To efficiently and flexibly multiplex both real-time service and non- real-time service on a radio data remote communication system. SOLUTION: A system for statistical multiplexing for conversation, other real-time data service, and non-real-time data service for fixed communication and one-to-many-point communication is provided. This system has high-speed access and an allocating procedure which enable the real-time multiplexing of delay-critical data service and non-real-time data service. For signal measurement reporting, channel quality feedback, and the carrying of 'pleasant' noise information, the continuity of a periodic control channel is maintained for the conversation talk spurt and voiceless period of a conversation voice.
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公开(公告)号：JP2001103004A
公开(公告)日：2001-04-13
申请号：JP2000270154
申请日：2000-09-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： NANDA SANJIV , REGE KIRAN M , WEAVER CARL FRANCIS
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device which control signal power in a radio communication system. SOLUTION: An Eb/N0 detector 330 measures the quality measured value (Eb/N0) of a signal received by a receiver 320 in the base station 210 of the radio communication system, a processor 350 calculates an effective signal quality measured value for a certain time length, a 1st comparator 360 compares a model target signal quality measured value with the effective signal quality measured value, and an aggregating device 370 increases a target quality measured value only by one step-up size, when the effective signal quality measured value is smaller than the model target quality measured value or reduces the target quality measured value only by one step-down size, when the effective quality measured value is larger than the model target quality measured value to adjust the target signal quality measured value, while corresponding to a fact that the effective signal quality measured value is different from the model target signal quality measured value. A 2nd comparator compares the target signal quality measured value with a received signal quality measured value and sends the adjustment request of the signal power from a mobile terminal to the mobile terminal.
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