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    • 3. 发明申请
    • METHOD AND APPARATUS FOR EFFICIENT SYSTEM ACCESS IN A DISPATCH SYSTEM
    • 用于在分配系统中有效的系统访问的方法和装置
    • WO1997050267A2
    • 1997-12-31
    • PCT/US1997010832
    • 1997-06-23
    • QUALCOMM INCORPORATED
    • QUALCOMM INCORPORATEDLEKVEN, Eric, J.YAO, Yu-DongGROB, Matthew, S.
    • H04Q07/28
    • H04W4/10H04W76/45
    • A method and apparatus to provide access to a dispatch system is disclosed. A communications manager (40) grants an exclusive system talker privilege to one remote unit (10) in the system at a time. After a remote unit (10) requests and is designated as the exclusive system talker, no other remote unit (20, 22) may transmit for a first pre-determined amount of time. After the first pre-determined time has elapsed, any other remote unit (20, 22) may request the exclusive system talker privilege and become the exclusive system talker. The exclusive system talker privilege is revoked by the communications manager (40) to any remote unit who retains the exclusive system talker privilege for more than a second pre-determined amount of time. The exclusive system talker privilege is also revoked upon the release of a push-to-talk button on a remote unit (10). Furthermore, a base station (44) in communication with a remote unit (10) designated as the exclusive system talker will generate a surrogate relinquishment request to the communications manager (40) if the exclusive system talker travels outside the coverage area of the system, loses power, or is destroyed.
    • 公开了一种提供对调度系统的访问的方法和装置。 通信管理器(40)一次向系统中的一个远程单元(10)授予独占系统讲话者特权。 在远程单元(10)请求并被指定为专用系统讲话者之后,没有其他远程单元(20,22)可以发送第一预定时间量。 在第一预定时间过去之后,任何其他远程单元(20,22)可以请求专用系统讲话者特权并成为专用系统讲话者。 通信管理器(40)将独占系统讲话者权限撤销到任何保留专用系统讲话者特权超过第二预定时间量的远程单元。 在远程单元(10)上释放按键通话按钮时,专用系统讲话者权限也被撤销。 此外,如果专用系统讲话者在系统的覆盖区域外行进,则与指定为专用系统讲话者的远程单元(10)通信的基站(44)将向通信管理器(40)生成替代放弃请求, 失去力量,或被毁灭。
    • 4. 发明申请
    • METHOD AND APPARATUS OF PROVIDING BIT COUNT INTEGRITY AND SYNCHRONOUS DATA TRANSFER OVER A CHANNEL WHICH DOES NOT PRESERVE SYNCHRONIZATION
    • 在不保存同步信道的情况下提供位计数完整性和同步数据传输的方法和装置
    • WO1997048205A1
    • 1997-12-18
    • PCT/US1997010283
    • 1997-06-11
    • QUALCOMM INCORPORATED
    • QUALCOMM INCORPORATEDGROB, Matthew, S.TIEDEMANN, Edward, G., Jr.KUDRIMOTI, Abhijit
    • H04L01/00
    • H04L7/0083H04J3/0632
    • Synchronization and bit count integrity of a synchronous data stream is preserved end to end even as it is transmitted via a medium which does not preserve the synchronous nature of the synchronous data stream. A terminal equipment unit (100) produces a constant rate bit stream which is provided to a communications unit (110). The communications unit (110) produces a first data frame comprising a first set of bits from the constant rate bit stream and a first length field value. A second data frame is produced which comprises a second set of bits from the constant rate bit stream and a second length field. A third data frame is produced which comprises a third set of bits from the constant rate bit stream and a third length field value. The first, second, and third data frames are transmitted to a base unit (118) which places the first set of bits from the first frame into a queue (150). A set of fill bits equal to the maximum number of bits contained in any frame is then placed into the queue (150). The base unit (118) then determines the number of bits in the second set of bits of the third data frame, based on the first length field value and the third length field value. The base unit (118) overwrites excess fill bits in the queue (150) with the third set of bits. The number of excess fill bits is equal to the difference between the maximum possible number of bits which may be contained in any frame and the number of bits in the second set of bits.
    • 即使通过不保持同步数据流的同步性质的介质来传输同步数据流的同步和位计数完整性也保持端到端。 终端设备单元(100)产生提供给通信单元(110)的恒定比特流。 通信单元(110)产生包括来自恒定比特流和第一长度字段值的第一组比特的第一数据帧。 产生第二数据帧,其包括来自恒定比特流和第二长度字段的第二组比特。 产生包括来自恒定比特流的第三组比特和第三长度字段值的第三数据帧。 第一,第二和第三数据帧被发送到将第一组位从第一帧放入队列(150)的基本单元(118)。 然后,将等于包含在任何帧中的最大位数的一组填充位置入队列(150)。 然后,基本单元(118)基于第一长度字段值和第三长度字段值来确定第三数据帧的第二组位中的位数。 基本单元(118)用第三组位覆盖队列(150)中的多余填充位。 多余填充位的数量等于可能包含在任何帧中的最大可能位数与第二组位中的位数之间的差。
    • 8. 发明申请
    • METHOD AND APPARATUS FOR PROVIDING A PRIVATE COMMUNICATION SYSTEM IN A PUBLIC SWITCHED TELEPHONE NETWORK
    • 在公共交换电话网络中提供私人通信系统的方法和装置
    • WO1997028658A2
    • 1997-08-07
    • PCT/US1997001521
    • 1997-01-29
    • QUALCOMM INCORPORATED
    • QUALCOMM INCORPORATEDLEKVEN, Eric, J.GROB, Matthew, S.YAFUSO, Byron, Y.ROGERS, Steven, L.
    • H04Q07/20
    • H04W84/16
    • A private communication network through which a plurality of member users communicate using the public switched telephone network (PSTN) (10) is disclosed herein. Each member user utilizes either a modified land line telephone (48) directly connected to PSTN (10), or uses a modified mobile telephone (22) operatively coupled to the PSTN through a wireless communication system (14). The private communication network includes network call manager (40) having a telephone network interface (92) for establishing a telephone connection with each of a plurality of telephone lines (44) of the PSTN (20). Each of the plurality of telephone lines (44) is associated with one of the plurality of member users. The network call manager (40) further includes a switch matrix (110), coupled to the telephone network interface, for providing an information signal received from an active member user over a selected telephone line to the remaining non-active member users.
    • 本文公开了使用公共交换电话网(PSTN)(10)多个成员用户进行通信的专用通信网络。 每个成员用户利用直接连接到PSTN(10)的经修改的陆线电话(48),或者使用通过无线通信系统(14)可操作地耦合到PSTN的经修改的移动电话(22)。 专用通信网络包括具有电话网络接口(92)的网络呼叫管理器(40),用于建立与PSTN(20)的多个电话线路(44)中的每个电话连接的电话连接。 多个电话线路(44)中的每一个与多个成员用户中的一个相关联。 网络呼叫管理器(40)还包括耦合到电话网络接口的交换矩阵(110),用于通过所选择的电话线路将活跃成员用户接收的信息信号提供给剩余的非活动成员用户。