Method and apparatus for transmitting data in packet data communication system
    1.
    发明专利
    Method and apparatus for transmitting data in packet data communication system 审中-公开
    用于在分组数据通信系统中传输数据的方法和装置

    公开(公告)号:JP2007124672A

    公开(公告)日:2007-05-17

    申请号:JP2006302722

    申请日:2006-11-08

    Abstract: PROBLEM TO BE SOLVED: To reduce a jitter buffer delay while reducing interference to other communication.
    SOLUTION: A wireless communication system transmits data over a first link from a first mobile station to an infrastructure at a first speaker link power level, and over a second link from the infrastructure to a second MS at a first listener link power level, during a first time period. Each of the first power levels is designed to avoid the need for retransmissions of erroneously received data. Upon expiration of the first time period, data is transmitted over the first and second links at reduced power levels and retransmissions of erroneously received data can be made. Error rate targets may be adjusted after expiration of the first time period. In addition, the power levels and error rate targets may be individually adjusted on a link-by-link basis based on the RF loading of each link or based on error measurement criteria determined for each link.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:减少抖动缓冲延迟,同时减少对其他通信的干扰。 解决方案:无线通信系统通过第一链路将数据从第一移动站发送到基础设施,以第一扬声器链路功率电平,并且在第一链路功率级上从基础设施到第二MS的第二链路 ,在第一个时期。 第一功率电平中的每一个被设计为避免需要重传错误接收的数据。 在第一时间段到期时,以降低的功率电平在第一和第二链路上发送数据,并且可以进行错误接收的数据的重传。 错误率目标可能会在第一个时间段到期后进行调整。 此外,可以基于每个链路的RF加载或基于为每个链路确定的误差测量标准,在逐个链路的基础上单独地调整功率电平和错误率目标。 版权所有(C)2007,JPO&INPIT

    IMPROVED SIMULCAST BROADCASTING SYSTEM AND METHOD.
    2.
    发明公开
    IMPROVED SIMULCAST BROADCASTING SYSTEM AND METHOD. 失效
    SAME波广播系统和方法。

    公开(公告)号:EP0439515A1

    公开(公告)日:1991-08-07

    申请号:EP89912074

    申请日:1989-09-22

    Applicant: MOTOROLA INC

    CPC classification number: H04H20/67 H04B7/2625

    Abstract: L'invention concerne un système de radiodiffusion d'émission relayée dans lequel deux signaux (103 et 106) destinés à une radiodiffuison simultanée sont transmis à partir d'un site de source (100) à des sites éloignés (200) discrets les uns par rapport aux autres. Les deux signaux sont traités séparément au niveau des sites éloignés, y compris l'introduction d'une temporisation appropriée (305 et 312), avant d'être combinés pour être radiodiffusés conjointement avec d'autres sites éloignés. On peut aussi prévoir un ou plusieurs sites de contrôle (400) afin de contrôler la cohérence de la réception dans le système et afin de produire des informations de mesure de fonctionnement et permettre la commande automatique de divers paramètres de systèmes d'émission relayée, y compris la temporisation.

    3.
    发明专利
    未知

    公开(公告)号:BR0305209A

    公开(公告)日:2004-07-27

    申请号:BR0305209

    申请日:2003-05-05

    Applicant: MOTOROLA INC

    Abstract: To address the need to provide interurban dispatch services, embodiments supporting an interurban dispatch group call service are disclosed. Call control in the controlling network equipment (e.g., 110-131) manages the dispatch service in both the local urban area (101) and the remote urban areas (151). Call flow embodiments that enable this management of group call service across urban area boundaries are described in detail.

    Method and apparatus for supporting at least two communication services in a communication system

    公开(公告)号:GB2299246B

    公开(公告)日:1998-02-11

    申请号:GB9608690

    申请日:1994-08-18

    Applicant: MOTOROLA INC

    Abstract: Apparatus and method for enabling a single communication system (100) to support at least two communication services. For example, one can support both cellular telephone services and trunked dispatch services by sharing some, but not all, of the system infrastructure. Access control gateways (201) and base stations (203) comprise common infrastructure elements, while two separate processors provide control for each service, these being a communication agent processor (104) to support telephone services, and a dispatch call processor (106) to support dispatch call services. These two independent processors each include a data base (303 and 307) that includes information concerning communication units (204-206) operating within the system. During a call set-up sequence, the access control gateway (201) receives a call request from a communication unit via a base station, and passes the request to the appropriate processor, which uses its corresponding database to support the requested service.

    5.
    发明专利
    未知

    公开(公告)号:FR2741772A1

    公开(公告)日:1997-05-30

    申请号:FR9614520

    申请日:1996-11-27

    Applicant: MOTOROLA INC

    Abstract: A radio communication system (200) employs a method (400) and system (200) for establishing a communication between communication units (212-217) using geographically distributed packet duplicators (203-205). The communication system (200) includes a system controller (201), a plurality of packet duplicators (203-205), a plurality of base sites (207-210), and a plurality of communication units (212-217). The packet duplicators (203-205), which provide interconnectivity between the base sites (207-210), are distributed throughout geographic regions (233-234) of the system (200). When the system controller (201) receives a request to communicate from one communication unit (e.g., 212) in a group of communication units (e.g., 212-215), the system controller (201) selects a packet duplicator (e.g., 203) serving a geographic region (e.g., 233) containing at least one communication unit in the group and uses the selected packet duplicator (203) to establish the group communication.

    ANTENNA SAMPLING SYSTEM
    7.
    发明专利

    公开(公告)号:CA1110329A

    公开(公告)日:1981-10-06

    申请号:CA299314

    申请日:1978-03-20

    Applicant: MOTOROLA INC

    Abstract: ANTENNA SAMPLING SYSTEM Each of a plurality of antenna sectors is sequentially coupled to a receiver via an antenna switch. The switch is operated by control logic circuitry which monitors the peak signal levels of the signals received by each sector. Unique circuitry is implemented which prevents the control logic from responding to spurious transient signals processed by the receiver's tuned circuits following each instance of antenna switching.

    8.
    发明专利
    未知

    公开(公告)号:AT494742T

    公开(公告)日:2011-01-15

    申请号:AT03763025

    申请日:2003-06-26

    Applicant: MOTOROLA INC

    Abstract: A wireless communication system that includes an MS that is a member of multiple talkgroups provides for a prioritization of the multiple talkgroups. A database included in the system maintains an MS identifier associated with the MS and maintains multiple talkgroup identifiers in association with the MS identifier, wherein each talkgroup identifier of the multiple talkgroup identifiers corresponds to a talkgroup of the multiple talkgroups. The database further maintains a prioritization associated with at least one talkgroup of the multiple talkgroups. In one embodiment of the invention, the MS may dynamically prioritize the multiple talkgroups to which it belongs. In another embodiment of the present invention, the prioritization may be statically maintained. In still another embodiment of the invention, the system utilizes the maintained prioritizations to determine whether to interrupt the MS when the MS is involved in a multi-party communication session.

    10.
    发明专利
    未知

    公开(公告)号:DE4497511T1

    公开(公告)日:1997-07-31

    申请号:DE4497511

    申请日:1994-08-18

    Applicant: MOTOROLA INC

    Abstract: Apparatus and method for enabling a single communication system (100) to support at least two communication services. For example, one can support both cellular telephone services and trunked dispatch services by sharing some, but not all, of the system infrastructure. Access control gateways (201) and base stations (203) comprise common infrastructure elements, while two separate processors provide control for each service, these being a communication agent processor (104) to support telephone services, and a dispatch call processor (106) to support dispatch call services. These two independent processors each include a data base (303 and 307) that includes information concerning communication units (204-206) operating within the system. During a call set-up sequence, the access control gateway (201) receives a call request from a communication unit via a base station, and passes the request to the appropriate processor, which uses its corresponding database to support the requested service.

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