公开(公告)号：WO2004109989A3

公开(公告)日：2005-03-31

申请号：PCT/EP2004050399

申请日：2004-03-31

Applicant: MOTOROLA INC ,  MOTOROLA LTD ,  BARRETT STEPHEN ,  VILLIER ERIC ,  LEGG PETER

Inventor： BARRETT STEPHEN ,  VILLIER ERIC ,  LEGG PETER

IPC: H04L12/54 ,  H04L12/801 ,  H04L12/56

CPC classification number: H04L47/14 ,  H04L47/50

Abstract: A method (200) for scheduling one or more data packets in a code division multiple access (CDMA) communication system (100) comprises the steps of measuring power by the one or more base sites (122-132) and computing an amount of downlink power resource needed to transmit one or more data packets using measurements made in the one or more of the base sites (122-132); and/or an amount of power resource availability into which one or more data packets can be scheduled. The method also comprises scheduling the one or more data packets based on the computed amount of power. In this manner, a CDMA communication system is able to determine whether sufficient power resource exists in order to schedule one or more data packets, thereby improving scheduling efficiency in scenarios where transmit power in the communication system is highly variable.

Abstract translation: 一种用于在码分多址（CDMA）通信系统（100）中调度一个或多个数据分组的方法（200）包括以下步骤：测量所述一个或多个基站（122-132）的功率并计算下行链路量 使用在一个或多个基站（122-132）中进行的测量来发送一个或多个数据分组所需的电力资源; 和/或可以调度一个或多个数据分组的功率资源可用性的量。 该方法还包括基于计算出的功率量来调度一个或多个数据分组。 以这种方式，CDMA通信系统能够确定是否存在足够的功率资源以便调度一个或多个数据分组，从而在通信系统中的发射功率高度可变的情况下提高调度效率。

公开(公告)号：GB2446193A

公开(公告)日：2008-08-06

申请号：GB0701730

申请日：2007-01-30

Applicant: MOTOROLA INC

Inventor： FOSTER GERARD ,  BARRETT STEPHEN ,  PADFIELD DAVID

IPC: H04W36/00

Abstract: A Code Division Multiple Access cellular communication system comprises a base station (101) supporting a remote station (117) making uplink transmissions using an uplink scrambling code in a first cell. A controller (119) determines a first set of uplink scrambling codes from an identity of the first remote station (117) and selects the used code therefrom. The first set has a unique dependency upon the identity. An access point (111) comprises a group processor (203) which determines the group of remote stations registered at the access point (including the first remote station (117)). A measurement code processor (205) determines the uplink scrambling codes potentially used by the registered remote stations. A measurement unit (207, 209) then monitors for received signals using these codes and a handover detection processor (211) generates a potential handover detection for the first remote station (117) in response to a detection of a received signal using the uplink scrambling code of the first remote station (117).

公开(公告)号：GB2437586A

公开(公告)日：2007-10-31

申请号：GB0608539

申请日：2006-04-27

Applicant: MOTOROLA INC

Inventor： BARRETT STEPHEN

IPC: H04L12/56 ,  H04Q11/04 ,  H04W36/18 ,  H04W72/04 ,  H04W76/04 ,  H04W88/02 ,  H04W92/12

Abstract: A cellular communication system supports High Speed Downlink Packet Access (HSDPA) services. A first transceiver (201) transmits HSDPA downlink packet data in a first cell and a second transceiver (203) transmits HSDPA downlink packet data in a second cell. A cell overlap processor (205) can determine that a remote station (101) is in a cell overlap region between the first cell and the second cell. A macro-diversity controller (207) causes the first transceiver (201) to transmit first HSDPA data to the remote station (101) as a first signal in the first cell and the second transceiver (203) to transmit the first HSDPA data to the remote station (101) as a second signal in the second cell. The first and second signals are macro-diversity signals. The remote station (101) comprises a macro-diversity combiner (303) which receives the first downlink HSDPA packet data by combining the first signal and the second signal. The invention may allow improved support of HSDPA services in cell overlap areas.

公开(公告)号：GB2360909A

公开(公告)日：2001-10-03

申请号：GB0007848

申请日：2000-03-31

Applicant: MOTOROLA INC

Inventor： LEGG PETER JONATHON ,  BARRETT STEPHEN ,  HILL STEPHEN

IPC: H04B7/005 ,  H04L12/28 ,  H04L12/56 ,  H04Q7/22

Abstract: In a CDMA cellular communication network, packet data may be broadcast at a discontinuous rate using a packet scheduler (7) which utilises available communication resources in each cell more efficiently than for continuous transmission. To maintain quality of service requirements, each packet scheduler is associated a power bin (9,10,11) which represents the total power available for transmission and reception in the cell. If a base station is experiencing a higher level of traffic than its neighbours, the power bin for that cell may be increased with quality of service requirements being maintained by decreasing the power bins of neighbouring cells. Reducing the maximum transmission value for an under utilized base station, decreases intercell interference in neighbouring cells. This means that more packets can be scheduled to an overloaded cell (1) without increasing transmission power, whilst maintaining a target signal to interference ratio at a receiver. (4,5).

公开(公告)号：WO2009055167A3

公开(公告)日：2009-06-18

申请号：PCT/US2008076777

申请日：2008-09-18

Applicant: MOTOROLA INC ,  BARRETT STEPHEN

Inventor： BARRETT STEPHEN

IPC: H04B7/26 ,  H04L12/56

CPC classification number: H04W72/1221 ,  H04W72/0473

Abstract: A scheduler (105) for scheduling data packets over an air interface of a cellular communication system comprises a coherence time processor (213) which determines a coherence time for a user equipment (101, 103). A scheduling unit (205) then schedules at least a first data packet for the user equipment (101, 103) in response to the coherence time. In some embodiments, the system may use a retransmission scheme and a scheduling which depends on a time varying propagation characteristic. In such embodiments, an available delay may be allocated to retransmissions or propagation dependent scheduling dependent on the coherence time. The scheduler may e.g. be implemented in a base station.

Abstract translation: 用于通过蜂窝通信系统的空中接口调度数据分组的调度器（105）包括确定用户设备（101,103）的相干时间的相干时间处理器（213）。 调度单元（205）然后响应于相干时间为用户设备（101,103）调度至少第一数据分组。 在一些实施例中，系统可以使用取决于时变传播特性的重传方案和调度。 在这样的实施例中，可以将可用延迟分配给依赖于相干时间的重传或依赖于传播的调度。 调度器可以例如 在基站中实施。

公开(公告)号：GB2453979B

公开(公告)日：2010-01-06

申请号：GB0720876

申请日：2007-10-24

Applicant: MOTOROLA INC

Inventor： BARRETT STEPHEN

IPC: H04W72/12

Abstract: A scheduler (105) for scheduling data packets over an air interface of a cellular communication system comprises a coherence time processor (213) which determines a coherence time for a user equipment (101, 103). A scheduling unit (205) then schedules at least a first data packet for the user equipment (101, 103) in response to the coherence time. In some embodiments, the system may use a retransmission scheme and a scheduling which depends on a time varying propagation characteristic. In such embodiments, an available delay may be allocated to retransmissions or propagation dependent scheduling dependent on the coherence time. The scheduler may e.g. be implemented in a base station.

公开(公告)号：GB2402580B

公开(公告)日：2005-07-27

申请号：GB0313099

申请日：2003-06-06

Applicant: MOTOROLA INC

Inventor： BARRETT STEPHEN ,  VILLIER ERIC ,  LEGG PETER

IPC: H04L12/54 ,  H04L12/801 ,  H04L12/56

公开(公告)号：AU2003247290A1

公开(公告)日：2004-04-19

申请号：AU2003247290

申请日：2003-05-23

Applicant: MOTOROLA INC

Inventor： KORALE ASOKA ,  BARRETT STEPHEN

IPC: H04W28/24 ,  H04W48/18 ,  H04Q7/38

公开(公告)号：GB2372406A

公开(公告)日：2002-08-21

申请号：GB0104171

申请日：2001-02-20

Applicant: MOTOROLA INC

Inventor： BARRETT STEPHEN ,  MARTINEZ GEORGES

IPC: H04W28/24 ,  H04W36/08 ,  H04W36/14 ,  H04Q7/38

Abstract: Apparatus for, and a method of operating, a communication system, for example a UMTS or GPRS cellular communication system, are described. A communication link is provided between two terminals, one of which is a mobile terminal. The communication system employs a congestion reduction protocol, such as Transmission Control protocol (TCP), which provides a congestion reduction mechanism by modifying transmission rates. When handover is to occur such that a first radio link will be replaced by a second radio link, the bit-rates of each radio link are determined compared, and a current value of a transmission characteristic which influences the congestion reduction protocol is adjusted over time to prepare for handover. The transmission characteristic may for example be bit-rate or TCP acknowledgement delay. False invoking of congestion procedure by the congestion reduction protocol is thereby alleviated.

公开(公告)号：GB2453979A

公开(公告)日：2009-04-29

申请号：GB0720876

申请日：2007-10-24

Applicant: MOTOROLA INC

Inventor： BARRETT STEPHEN

IPC: H04L12/56

Abstract: A scheduler (105) for scheduling data packets over an air interface of a cellular communication system comprises a coherence time processor (213) which determines a coherence time for a user equipment (101, 103) . A scheduling unit (205) then schedules at least a first data packet for the user equipment (101, 103) in response to the coherence time. In some embodiments, the system may use a retransmission scheme and a scheduling which depends on a time varying propagation characteristic. In such embodiments, an available delay may be allocated to retransmissions or propagation dependent scheduling dependent on the coherence time. The scheduler may e.g. be implemented in a base station. The coherence time reflects a speed or rate of change of the channel quality and is calculated form CQI measurements reported from user equipment. Coherence time may also be determined in response to or represented by a speed of a user equipment.