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公开(公告)号：WO0251059A3
公开(公告)日：2002-11-14
申请号：PCT/EP0115025
申请日：2001-12-17
Applicant: MOTOROLA INC , AFTELAK ANDREW JOHN
Inventor： AFTELAK ANDREW JOHN
IPC: H04L1/20
Abstract: A method of estimating signal quality, the method including a) taking a plurality of complex samples of a decoded signal at its symbol rate for a plurality of slots, for each of the slots b) partitioning the samples into a plurality of partitioned sample sets, for each of the partitioned sample sets c) deriving data symbols from the samples, d) re-encoding the data symbols into a re-encoded symbol set, e) forming a vector of length L that is orthogonal to a set of vectors formed from L consecutive samples of the re-encoded symbol set, where L is an integer less than or equal to the number of samples in the partitioned set, and f) forming an estimate of the singal quality from the pluarlity of complex samples for the plurality of slots using at least one of the orthogonal vectos.
Abstract translation: 一种估计信号质量的方法，该方法包括：a）对于多个时隙中的每一个时隙，以多个时隙的码元速率对解码信号进行多个复数样本; b）将样本分成多个分区样本集合， 对于每个分割样本集合c）从样本导出数据符号，d）将数据符号重新编码成重新编码的符号集合，e）形成长度为L的矢量，该矢量与从 L个重新编码符号集合的连续样本，其中L是小于或等于分割集合中样本数量的整数，以及f）根据多个复杂样本的多个样本形成信号质量的估计 使用至少一个正交矢量的时隙。
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公开(公告)号：AU2002235796B2
公开(公告)日：2005-11-10
申请号：AU2002235796
申请日：2001-12-17
Applicant: MOTOROLA INC
Inventor： AFTELAK ANDREW JOHN
IPC: H04L1/20 , H04L001/00
Abstract: A method of estimating signal quality, the method including a) taking a plurality of complex samples of a decoded signal at its symbol rate for a plurality of slots, for each of the slots b) partitioning the samples into a plurality of partitioned sample sets, for each of the partitioned sample sets c) deriving data symbols from the samples, d) re-encoding the data symbols into a re-encoded symbol set, e) forming a vector of length L that is orthogonal to a set of vectors formed from L consecutive samples of the re-encoded symbol set, where L is an integer less than or equal to the number of samples in the partitioned set, and f) forming an estimate of the signal quality from the plurality of complex samples for the plurality of slots using at least one of the orthogonal vectors.
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公开(公告)号：GB2374762A
公开(公告)日：2002-10-23
申请号：GB0109539
申请日：2001-04-18
Applicant: MOTOROLA INC
Inventor： GIBBS JONATHAN ALASTAIR , AFTELAK ANDREW JOHN , LUCAS RICHARD CHARLES , CRISLER KENNETH JAMES , WRIGHT CHRISTOPHER WARREN
Abstract: In a radio communication system a method of directing a communicating unit to utilise a communication resource includes the step of: informing a receiving communication unit, on a first channel or frequency, of at least one alternative channel or frequency (200) that is to be used for a communication if the first channel or frequency is used for a call. The at least one alternative frequency or channel (200) includes a single favourite frequency or channel (210) and a cyclically transmitted list of secondary frequencies or channels (212). This mechanism allows a base transceiver station (BTS) to indicate to a fleet of mobile stations (MSs) that are serviced by the BTS, a set of frequencies that will be used in the event that the current monitoring frequency ceases to remain available.
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公开(公告)号：DE60131678T2
公开(公告)日：2008-04-10
申请号：DE60131678
申请日：2001-12-17
Applicant: MOTOROLA INC
Inventor： AFTELAK ANDREW JOHN
Abstract: A method of estimating signal quality, the method including a) taking a plurality of complex samples of a decoded signal at its symbol rate for a plurality of slots, for each of the slots b) partitioning the samples into a plurality of partitioned sample sets, for each of the partitioned sample sets c) deriving data symbols from the samples, d) re-encoding the data symbols into a re-encoded symbol set, e) forming a vector of length L that is orthogonal to a set of vectors formed from L consecutive samples of the re-encoded symbol set, where L is an integer less than or equal to the number of samples in the partitioned set, and f) forming an estimate of the signal quality from the plurality of complex samples for the plurality of slots using at least one of the orthogonal vectors.
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公开(公告)号：GB2374761A
公开(公告)日：2002-10-23
申请号：GB0109538
申请日：2001-04-18
Applicant: MOTOROLA INC
Inventor： GIBBS JONATHAN ALASTAIR , AFTELAK ANDREW JOHN , LUCAS RICHARD CHARLES , CRISLER KENNETH JAMES , WRIGHT CHRISTOPHER WARREN
Abstract: A self-organising wireless communication system (10) includes a plurality of wireless serving communication units (24-30) serving a plurality of mobile stations (12-16) with a limited communication resource (18-22). At least one wireless serving communication unit (24-30) includes a transmitter transmitting a wireless transmission message (190) including at least a yoohoo message portion (198). The yoohoo message portion (198) identifies whether transmissions from other wireless serving communication units can be received by the at least one wireless serving communication unit (24-30). This enables several BTSs or repeaters to share simultaneously a single frequency and to indicate to their respective fleets of MS's which frequency they are currently permitted to use and need to monitor for their transmissions. This is achieved partly through the concept of a 'map' of other transmissions to allow access and coordination. It also allows collisions to be detected and resolved when they are likely to occur.
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Patent Agency Ranking
公开(公告)号：AU3579602A
公开(公告)日：2002-07-01
申请号：AU3579602
申请日：2001-12-17
Applicant: MOTOROLA INC
Inventor： AFTELAK ANDREW JOHN
Abstract: A method of estimating signal quality, the method including a) taking a plurality of complex samples of a decoded signal at its symbol rate for a plurality of slots, for each of the slots b) partitioning the samples into a plurality of partitioned sample sets, for each of the partitioned sample sets c) deriving data symbols from the samples, d) re-encoding the data symbols into a re-encoded symbol set, e) forming a vector of length L that is orthogonal to a set of vectors formed from L consecutive samples of the re-encoded symbol set, where L is an integer less than or equal to the number of samples in the partitioned set, and f) forming an estimate of the signal quality from the plurality of complex samples for the plurality of slots using at least one of the orthogonal vectors.
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公开(公告)号：AT448663T
公开(公告)日：2009-11-15
申请号：AT02007494
申请日：2002-04-02
Applicant: MOTOROLA INC
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公开(公告)号：GB2374761B
公开(公告)日：2004-10-06
申请号：GB0109538
申请日：2001-04-18
Applicant: MOTOROLA INC
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公开(公告)号：GB2367221A
公开(公告)日：2002-03-27
申请号：GB0023547
申请日：2000-09-26
Applicant: MOTOROLA INC
Inventor： AFTELAK ANDREW JOHN
Abstract: A method of estimating signal quality includes taking complex samples 110 of a decoded signal, mapping 130 each of the samples by expressing its phase modulo f /n where n is an integer equal to the number of points in the constellation divided by 2 (where all the constellation points have the same amplitude) and rotating 140 each of the modulo f /n samples by - f /2n. For example, for quadrature phase shift keying (QPSK) where n=2, each of the samples is mapped to the upper right QPSK quadrant. The ratio 150 of the imaginary part of each of the rotated samples to its real part is then taken to provide an instantaneous square root of an interference to signal (I/C) ratio. A variance associated with several I/C ratios is calculated 170 to provide an estimate of the signal quality. Application is to TETRA radio communication systems.
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公开(公告)号：GB2362069A
公开(公告)日：2001-11-07
申请号：GB0010598
申请日：2000-05-03
Applicant: MOTOROLA INC
Inventor： FENTON SHAUN RICHARD , PHILLIPS CHRISTOPHER FRANK , WRIGHT CHRISTOPHER , AFTELAK ANDREW JOHN , TOTTLE PHILIP ALAN
Abstract: A system for, and method of, optimising communication on one or more wireless communications systems, wherein, a transmission procedure is determined in accordance with information about the environment in which a mobile station (MS) wishing to transmit is located. The mobile station may gain information about the environment by communication with other mobile stations (MS). Determining the transmission procedure comprises choosing either a wireless/ radio channel or an access method for the transmission from a mobile station.
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