Method and apparatus for performing flow control in a wireless communications system
    1.
    发明授权
    Method and apparatus for performing flow control in a wireless communications system 失效
    一种用于在无线通信系统中执行流量控制的方法和装置

    公开(公告)号:US06192029B1

    公开(公告)日:2001-02-20

    申请号:US09015690

    申请日:1998-01-29

    IPC分类号: G01R3108

    摘要: A data communications system includes a server router (102), such as an access controller gateway, operably coupled to at least one client router (104), such as a base radio controller, by an asynchronous link, such as a LAN (106). The client router forwards data received from the server router and stored in the client router's outbound queue (110) synchronously to a device, such as a mobile station (202). The client router's outbound queue is maintained between a lower queue limit and an upper queue limit so as to both reduce the occurrence of data starvation and reduce the amount of data lost should the mobile station hand off to a new serving site. The server router calculates an optimum average send rate and transmits data in bursts at regular intervals, and adjusts the average send rate in response to changes in the outbound rate of the client router. The client router is state machine driven, and sends flow control messages only when entering a new state so as to reduce the amount of flow control messaging.

    摘要翻译: 数据通信系统包括诸如接入控制器网关的服务器路由器(102),其通过诸如LAN(106)的异步链路可操作地耦合到诸如基站无线电控制器的至少一个客户端路由器(104) 。 客户端路由器将从服务器路由器接收的数据转发并存储在客户端路由器的出站队列(110)中,同步到诸如移动台(202)的设备。 客户端路由器的出站队列保持在较低队列限制和上限队列限制之间,以便减少数据饥饿的发生,并减少移动台切换到新服务站点时丢失的数据量。 服务器路由器计算最佳平均发送速率,并以规则的间隔发送突发数据,并根据客户端路由器出站速率的变化调整平均发送速率。 客户端路由器是状态机驱动的,仅在进入新状态时才发送流控制消息,以减少流量控制消息传递的数量。

    Method to indicate status of channels assigned to a talkgroup in a multi-site conventional communication system
    2.
    发明授权
    Method to indicate status of channels assigned to a talkgroup in a multi-site conventional communication system 有权
    指示分配给多站点常规通信系统中的通话组的信道的状态的方法

    公开(公告)号:US08116798B2

    公开(公告)日:2012-02-14

    申请号:US12344932

    申请日:2008-12-29

    IPC分类号: H04W4/06

    摘要: A method for indicating the status of communication channels assigned to a talkgroup includes: determining the channels in various sites in a conventional communication system that service a talkgroup for media transmissions between subscribers of the talkgroup; receiving notification of the status of transmission activity on the channels; and based on the notification, providing an indication of the status of the channels assigned to the talkgroup so that the talkgroup or subscribers of the talkgroup can choose to proceed with a talkgroup communication. The notification may be received by an infrastructure device in an RF site or a central controlling entity. The indication may be that the channel is free for transmissions or is busy.

    摘要翻译: 一种用于指示分配给通话组的通信信道的状态的方法包括:确定服务于话音组的常规通信系统中的各个站点中的信道,用于在通话组的用户之间进行媒体传输; 接收通道上传输活动状态的通知; 并且基于该通知,提供分配给该通话组的频道的状态的指示,使得该通话组或该通话组的用户可以选择进行通话组通信。 该通知可以由RF站点或中央控制实体中的基础设施设备接收。 该指示可以是信道是空闲的或正在忙碌。

    Method for selecting a channel in a multi-channel communication system
    4.
    发明授权
    Method for selecting a channel in a multi-channel communication system 有权
    用于在多声道通信系统中选择频道的方法

    公开(公告)号:US08427996B2

    公开(公告)日:2013-04-23

    申请号:US12344729

    申请日:2008-12-29

    IPC分类号: H04W48/16

    摘要: A method for selecting a channel for group communications in a conventional multi-channel communication system comprises receiving, for a plurality of channels in the multi-channel communication system, a talkgroup assignment list for the channels that identifies a set of talkgroups assigned to use the corresponding channels. A subscriber unit receives talkgroup assignment lists for multiple different channels, determines a desired talkgroup, and selects a channel assigned to the desired talkgroup using the received talkgroup assignment. The talkgroup assignment list is developed for at least one channel in the multi-channel communication system and identifies a set of talkgroups assigned to use the corresponding channel. The list is transmitted for the channel to a subscriber unit and is used by the subscriber unit to register with the system and affiliate with a talkgroup supported by the channel in the conventional multi-channel communication system.

    摘要翻译: 一种用于在常规多声道通信系统中选择用于组通信的频道的方法包括:对于多声道通信系统中的多个频道,接收用于标识被分配用于使用该通道的一组通话组的频道的通话组分配列表 相应渠道。 订户单元接收用于多个不同频道的通话组分配列表,确定所需的通话组,并且使用所接收的通话组分配来选择分配给所需通话组的频道。 通话组分配列表被开发用于多声道通信系统中的至少一个频道,并且识别分配用于使用相应频道的一组通话组。 将该列表发送给用户单元,并由用户单元用于向系统注册,并与常规多信道通信系统中的信道支持的通话组联系。

    Method and apparatus for moving primary control of a call in a multiple
site communication system
    6.
    发明授权
    Method and apparatus for moving primary control of a call in a multiple site communication system 失效
    用于移动多站点通信系统中的呼叫的主要控制的方法和装置

    公开(公告)号:US5535426A

    公开(公告)日:1996-07-09

    申请号:US166586

    申请日:1993-12-13

    IPC分类号: H04W4/06 H04Q7/00

    CPC分类号: H04W72/005

    摘要: Resource controllers (14) within a multisite communication system (20) selectively and automatically assume primary (45) and secondary (53) control modes of operation in order to ensure that adequate communication resources are assigned throughout the system at necessary sites in order to include talk group members that are dispersed throughout the system.

    摘要翻译: 多站点通信系统(20)内的资源控制器(14)有选择地并且自动地采用主要(45)和次要(53)控制操作模式,以便确保在整个系统中在必要的位置分配足够的通信资源,以便包括 讲话组成员分散在整个系统中。

    Role-Based Operational Communications Directory
    9.
    发明申请
    Role-Based Operational Communications Directory 有权
    基于角色的操作通信目录

    公开(公告)号:US20090276461A1

    公开(公告)日:2009-11-05

    申请号:US12115358

    申请日:2008-05-05

    IPC分类号: G06F17/30

    摘要: A role-based operational directory capable of facilitating identification of and communication with key contact personnel during an operation is disclosed. Role-specific directory instances are created in the directory. The role-specific instances are created by a system operator and list the roles involved in an operation and the associations between the roles. The role-specific directory instance is advertised to a selected user, and the selected user associates with the role-specific directory instance. If the user is a key contact for the operation or is otherwise required or allowed to be associated with a role in the operation, the user also associates with a role from the list of roles in the role-specific directory instance. The directory instance is dynamically updated, modified, and tailored as necessary, and transmitted to the communication devices of the selected users of the role-specific directory instance.

    摘要翻译: 公开了一种基于角色的操作目录,其能够在操作期间促进与关键接触人员的识别和通信。 在目录中创建特定于角色的目录实例。 特定于角色的实例由系统操作员创建,并列出操作中涉及的角色以及角色之间的关联。 角色特定的目录实例被通告给选定的用户,并且所选择的用户与特定于角色的目录实例相关联。 如果用户是操作的关键联系人,或者否则需要或允许与操作中的角色相关联,则用户还可以从角色特定目录实例中的角色列表中与角色进行关联。 目录实例根据需要动态更新,修改和量身定制,并发送到角色特定目录实例的所选用户的通信设备。