Method and apparatus for multiplexing fixed length message data and variably coded speech

    公开(公告)号:GB2285372B

    公开(公告)日:1998-02-11

    申请号:GB9505584

    申请日:1994-07-05

    Applicant: MOTOROLA INC

    Abstract: Speech of an unknown amount and control message data (150) of known amount are multiplexed so that the coded voice data is transmitted before the elapse of a predetermined number of frames. A variable rate vocoder (110) receives and codes the speech of an unknown amount at one of full and less than full rates to produce the coded voice data. A multiplexer (120) receives the coded voice data from the variable rate vocoder (110) and sends frames containing the coded voice data when the variable rate vocoder operates at a full rate. When the variable rate vocoder (110) operates at a less than full rate, the multiplexer (120) sends frames containing portions of the message data together with the coded voice data. However, when the number of frames remaining before a predetermined number of flames has been sent is the minimum number of frames necessary to send remaining of the control message data (150) together with the coded voice data at less than full rate, the variable rate vocoder (110) is forced to a voice coding rate lower than full rate. The lower than full rate voice coding of the variable rate vocoder (110) reduces the amount of coded voice data to send in a frame and makes space in the frame to send remaining of the control message data (150) together with the coded voice data.

    Changing a service option in a cdma communication system

    公开(公告)号:GB2306277A

    公开(公告)日:1997-04-30

    申请号:GB9702497

    申请日:1996-04-17

    Applicant: MOTOROLA INC

    Abstract: A code division multiple access (CDMA) communication system (100) implements a service option change in a mobile station (106) by including data representing the service option to be employed in a handoff message (500) transmitted from a base station (102) to the mobile station (106). Use of the handoff message (500) as a medium to change a service option eliminates the cumbersome negotiation technique currently required to perform a service option change prior to handoff of the mobile station (106) from a first coverage area (104) to a second coverage area (110) or from a first channel to a second channel within a given coverage area (104).

    Method and apparatus for multiplexing fixed length message data and variably coded speech

    公开(公告)号:GB2285372A

    公开(公告)日:1995-07-05

    申请号:GB9505584

    申请日:1994-07-05

    Applicant: MOTOROLA INC

    Abstract: Speech of an unknown amount and control message data (150) of known amount are multiplexed so that the coded voice data is transmitted before the elapse of a predetermined number of frames. A variable rate vocoder (110) receives and codes the speech of an unknown amount at one of full and less than full rates to produce the coded data. A multiplexer (120) receives the coded voice data from the variable rate vocoder (110) and sends frames containing the coded voice data when the variable rate vocoder operates at a full rate. When the variable rate vocoder (110) operates at less than full rate, the multiplexer (120) sends frames containing portions of the message data together with the coded voice data. However, when the number of frames remaining before a predetermined number of frames necessary to send the remaining of the control message data (150) together with the coded voice data at less than full rate, the variable rate vocoder (110) is forced to a voice coding rate lower than full rate.

    TDMA TRANSCEIVER CONTROLLER METHOD AND APPARATUS

    公开(公告)号:CA2071556A1

    公开(公告)日:1992-06-21

    申请号:CA2071556

    申请日:1991-12-18

    Applicant: MOTOROLA INC

    Abstract: A radio transceiver (119) including a transmitter (111), a receiver (107), and a controller (113). The controller (113) creates a fixed period reference signal (201) and a second reference signal (203) which has a variable delay in time from the fixed period reference signal (201). In addition the controller (113) creates a plurality of control signals used to control parts of the transceiver (119) and which are time dependant upon the second reference signal 203). Therefore, the adjusting of the variable delay of the second signal subsequently adjusts the plurality of control signals.

    IN-VEHICLE PICO-CELL SYSTEM AND METHODS THEREFOR
    18.
    发明申请
    IN-VEHICLE PICO-CELL SYSTEM AND METHODS THEREFOR 审中-公开
    车载PICO电池系统及其方法

    公开(公告)号:WO2007079329A2

    公开(公告)日:2007-07-12

    申请号:PCT/US2006061981

    申请日:2006-12-13

    CPC classification number: H04W48/18 H04B7/18508 H04W84/005 H04W88/06

    Abstract: An apparatus (100) generates a preferred roaming list (108) for a wireless mobile station (404) that includes area identification data (such as GEO GROUP ID) (200) corresponding to an area serviced by at least one wireless wide area network, such as a ground based CDMA system and an area services by at least one in-vehicle wireless pico-cell (402), such as a wireless CDMA pico-cell located on an aircraft or any other suitable vehicle. The area identification data (200) is associated with a wireless in-vehicle pico-cell system identification data (205) and in the case of a CDMA pico cell system, a system identification data SID) and network identification (NID) data pair (206) associated with the in-vehicle wireless pico-cell (402).

    Abstract translation: 一种装置(100)为包括对应于由至少一个无线广域网服务的区域的区域识别数据(例如GEO GROUP ID)(200))的无线移动台(404)生成优选漫游列表(108) 例如基于地面的CDMA系统以及由至少一个车载无线微微小区(402)(诸如位于飞机上的无线CDMA微微小区或任何其它合适的车辆)的区域服务。 区域识别数据(200)与无线车载微微小区系统识别数据(205)相关联,并且在CDMA微微小区系统的情况下,系统识别数据SID和网络标识(NID)数据对(NID) 206)与车载无线微微小区(402)相关联。

    METHOD AND APPARATUS FOR FREEING A FRAME TO AID IN HANDOFF DETERMINATION IN A CODE DIVISION MULTIPLE ACCESS COMMUNICATION SYSTEM
    19.
    发明公开
    METHOD AND APPARATUS FOR FREEING A FRAME TO AID IN HANDOFF DETERMINATION IN A CODE DIVISION MULTIPLE ACCESS COMMUNICATION SYSTEM 失效
    程序对UNG单元框架救济便于在通信系统中的控制传输与多个接入BY KODEVERSCHACHTELUNG

    公开(公告)号:EP0974206A4

    公开(公告)日:2002-01-16

    申请号:EP98906535

    申请日:1998-02-18

    Applicant: MOTOROLA INC

    CPC classification number: H04W36/0094

    Abstract: A mobile station (106) in a code division multiple access (CDMA) communication system (100) implements scanning of pilot channels on a different frequency by reserving a periodic frame on the forward channel to allow the mobile station (106) to change frequencies and scan for other pilot channels. To preserve some aspects of voice quality, both the base station (102) and mobile station (106) voice encode speech at a maximum of half rate and transmit the information as secondary traffic prior to the frame where the mobile station (106) scans the alternate frequency. To maximize the trade-off between voice quality and frequency of the scan, the base station (102) indicates to the mobile station (106) the period between other frequency scans via messaging. To ensure compatibility, this method can be negotiated via known service configuration negotiation techniques.

    METHOD AND APPARATUS FOR PREVENTING DENIAL OF SERVICE ATTACKS ON CELLULAR INFRASTRUCTURE ACCESS CHANNELS
    20.
    发明申请
    METHOD AND APPARATUS FOR PREVENTING DENIAL OF SERVICE ATTACKS ON CELLULAR INFRASTRUCTURE ACCESS CHANNELS 审中-公开
    防止细胞基础设施访问通道服务攻击的方法和装置

    公开(公告)号:WO2007103730A3

    公开(公告)日:2008-12-24

    申请号:PCT/US2007063074

    申请日:2007-03-01

    Abstract: In the various embodiments, base station (103), or base station controller (101), will determine whether mobile station (107) is sending access requests beyond a limit predetermined to represent normal mobile station behavior. If the mobile station exceeds this limit, the network, via base station (103) or other base stations such as base station (105), will send a maintenance message to the mobile station (107) for the purpose of limiting its access requests. The maintenance message may comprise a parameter that specifies a limited number of access requests (109), (111) the mobile station (107) may make within a given time period. The mobile station (107) may still be allowed to send access requests (109) for the purpose of making an emergency call, and may further be limited to sending access requests only if the emergency call is placed from the mobile station (107) keypad.

    Abstract translation: 在各种实施例中,基站(103)或基站控制器(101)将确定移动台(107)是否发送超出预定的限制以代表正常移动台行为的接入请求。 如果移动站超过该限制,则为了限制其访问请求,经由基站(103)或其他基站(例如基站(105))的网络将向移动台(107)发送维护消息。 维护消息可以包括指定移动台(107)在给定时间段内可能进行的有限数量的访问请求(109),(111)的参数。 仍然可以允许移动台(107)发送用于进行紧急呼叫的接入请求(109),并且可以进一步限于仅当从移动台(107)键盘发出紧急呼叫时发送接入请求 。

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