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    RETRANSMISSION IN A CELLULAR COMMUNICATION SYSTEM
    11.
    发明申请
    RETRANSMISSION IN A CELLULAR COMMUNICATION SYSTEM 审中-公开
    细胞通信系统中的重新定位

    公开(公告)号：WO2007053616A3

    公开(公告)日：2007-11-08

    申请号：PCT/US2006042462

    申请日：2006-10-31

    Applicant: MOTOROLA INC ,  WHINNETT NICK W

    Inventor： WHINNETT NICK W

    IPC: H04J1/00 ,  G06F15/16 ,  H04B1/10 ,  H04B7/216

    CPC classification number: H04B1/1027 ,  H04L1/1692 ,  H04L2001/125

    Abstract: An apparatus comprises a detection processor (203) for detecting retransmission feedback messages in response to a detection threshold. A threshold processor (207) determines the detection threshold in response to a noise estimate generated by a noise processor (209). The noise processor comprises a sub-symbol generator (211) which divides a retransmission feedback symbol into a plurality of sub-symbols. Each of the sub-symbols is despread by a spreading code with a lower spreading factor than a spreading factor of the retransmission feedback symbol. A difference generator (213) then generates difference symbol values between the plurality of sub-symbols and a noise estimator (215) generates the noise estimate in response to the difference symbol values, for example by determining the variance of the difference symbol values. An improved noise estimate may be determined resulting in improved detection performance and thus improved retransmission performance.

    Abstract translation: 一种装置，包括：检测处理器（203），用于响应于检测阈值检测重发反馈消息。 阈值处理器（207）响应于由噪声处理器（209）产生的噪声估计来确定检测阈值。 噪声处理器包括将重发反馈符号划分成多个子符号的子符号发生器（211）。 每个子符号被具有比重传反馈符号的扩展因子更低的扩展因子的扩展码解扩。 差分发生器（213）然后在多个子符号之间生成差分符号值，并且噪声估计器（215）例如通过确定差分符号值的方差来响应差值符号值产生噪声估计。 可以确定改进的噪声估计，从而提高检测性能，从而改善重传性能。

    Method and apparatus for determining beamforming weights for an antenna array
    14.
    发明专利
    Method and apparatus for determining beamforming weights for an antenna array 未知

    公开(公告)号：GB2450522A

    公开(公告)日：2008-12-31

    申请号：GB0712533

    申请日：2007-06-29

    Applicant: MOTOROLA INC

    Inventor： WHINNETT NICK W

    IPC: H04B7/06 ,  H04B7/185 ,  H04L1/06

    Abstract: A beamforming processor (133) determines responses for transmit elements (109-115) and receive elements (125-131) for each antenna elements (101-107) of an antenna array. A channel response processor (205) estimates a channel response for each propagation channel between one of the plurality of antenna elements (101-107) and a remote station in response to a signal received from the remote station. A receive compensation processor (207) compensates the channel responses for the receive elements (125-131) but not the transmit elements (109-115). An Eigen beamforming processor (209) then executes an Eigen beamforming algorithm based on the compensated channel responses. The resulting beamform weights are then compensated for the response of the transmit elements (109-115) in a transmit compensation processor (211). By using a separated two stage compensation for responses of the receive elements (125-131) and the transmit elements (109-115), improved beamforming based on Eigen beamforming can be achieved.

    15.
    发明专利
    未知

    公开(公告)号：DE112006002491T5

    公开(公告)日：2008-07-10

    申请号：DE112006002491

    申请日：2006-06-30

    Applicant: MOTOROLA INC

    Inventor： WANG FAN ,  GHOSH AMITAVA ,  RATASUK RAPEEPAT ,  WHINNETT NICK W ,  XIAO WEIMIN

    IPC: H04L12/26

    Abstract: A method to provide a nominal best effort data rate based on a Quality of Service (QoS) requirement of a user data connection, the method comprising assigning ( 105 ) a service priority based on the QoS requirement, and assigning ( 110 ) the nominal best effort data rate for the service priority using a predetermined function. Further, it comprises of a method to determine a scheduling priority value for a user data connection by providing a relative fairness. Furthermore, the method comprises a method to satisfy a delay requirement for a delay sensitive data connection through a scheduling.

    A transmitter, cellular communication system and method of transmitting therefor
    16.
    发明专利
    A transmitter, cellular communication system and method of transmitting therefor 未知

    公开(公告)号：GB2430844B

    公开(公告)日：2008-01-02

    申请号：GB0520099

    申请日：2005-10-03

    Applicant: MOTOROLA INC

    Inventor： WHINNETT NICK W

    IPC: H04L27/26 ,  H04J11/00

    Abstract: In a Discrete Fourier Transform-Spread Orthogonal Frequency Division Multiplex (DFT-SOFDM) transmitter for Evolved-UMTS Terrestrial Radio Access (E-UTRA) signals, each of two cascaded phase rotators 203 and 205 multiply an incoming complex Binary Phase Shift Keyed (BPSK) symbol by some complex value in accordance with different phase rotation constraints in order to prevent transmitters aligning in the In phase/Quadrature (IQ) domain. For example, 203 could output a pi/2 BPSK modulated signal by multiplying by a j, 1, j, 1, ... sequence, which 205 then multiplied by a j, j, j, 1, 1, 1, -1, -1, -1 ... scrambling code, reducing alignment interference and the required amplifier back-off. The symbols are then converted to groups (101) and directly coupled to an M-point DFT (105), without being mapped to constellation as in prior art (103), before entering an N>M-point inverse DFT (107) to retrieve a time domain signal.

    Air interface technique for E-UTRA transmissions
    17.
    发明专利
    Air interface technique for E-UTRA transmissions 未知

    公开(公告)号：GB2430844A

    公开(公告)日：2007-04-04

    申请号：GB0520099

    申请日：2005-10-03

    Applicant: MOTOROLA INC

    Inventor： WHINNETT NICK W

    IPC: H04L27/26 ,  H04J11/00

    Abstract: In a Discrete Fourier Transform-Spread Orthogonal Frequency Division Multiplex (DFT-SOFDM) transmitter for Evolved-UMTS Terrestrial Radio Access (E-UTRA) signals, each of two cascaded phase rotators 203 and 205 multiply an incoming complex Binary Phase Shift Keyed (BPSK) symbol by some complex value in accordance with different phase rotation constraints in order to prevent transmitters aligning in the In phase/Quadrature (IQ) domain. For example, 203 could output a pi/2 BPSK modulated signal by multiplying by a j, 1, j, 1, ... sequence, which 205 then multiplied by a j, j, j, 1, 1, 1, -1, -1, -1 ... scrambling code, reducing alignment interference and the required amplifier back-off. The symbols are then converted to groups (101) and directly coupled to an M-point DFT (105), without being mapped to constellation as in prior art (103), before entering an N>M-point inverse DFT (107) to retrieve a time domain signal.

    RANDOM ACCESS COMMUNICATION OPPORTUNITY METHOD
    18.
    发明专利
    RANDOM ACCESS COMMUNICATION OPPORTUNITY METHOD 未知

    公开(公告)号：CA2535424A1

    公开(公告)日：2005-03-10

    申请号：CA2535424

    申请日：2004-08-23

    Applicant: MOTOROLA INC

    Inventor： LOVE ROBERT T ,  GHOSH AMITAVA ,  WHINNETT NICK W

    IPC: H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04W36/16 ,  H04W88/06 ,  H04W88/10

    Abstract: During a random access communication opportunity (12), user equipment (20) utilizes either or both of an adaptive modulation and coding-based communication protocol (26) and an HARQ-based communication protocol (27) to achieve improved performance. This can avoid the need to establish dedicated channels (13) to support the required communications. In one embodiment, a plurality of adaptive modulation and coding-based communication protocols ar e provided with a given protocol being selected as a function of one or more governing criteria. For example, the protocol can be selected as a function of a quality condition of the communication path, as a function of a memory buffer, and so forth.

    Determining a scheduling priority value for a user data connection
    19.
    发明专利
    Determining a scheduling priority value for a user data connection 未知

    公开(公告)号：GB2465926A

    公开(公告)日：2010-06-09

    申请号：GB201004967

    申请日：2006-06-30

    Applicant: MOTOROLA INC

    Inventor： WHINNETT NICK W ,  XIAO WEIMIN ,  WANG FAN ,  GHOSH AMITAVA ,  RATASUK RAPEEPAT

    IPC: H04L12/56 ,  H04L12/26

    Abstract: A method to determine a scheduling priority value for a user data connection, the method comprising: determining an instantaneous data rate achievable for the user data connection based on a channel quality; determining a normalized average throughput for the user data connection, the normalized average throughput being a first ratio of an average throughput of the user data connection, with respect to a nominal best effort data rate assigned to the user data connection; calculating the scheduling priority value being a second ratio of the instantaneous data rate controlled by a first mathematical index, with the normalized average throughput controlled by a second mathematical index, the first mathematical index and the second mathematical index being used to control a scheduling fairness.

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