公开(公告)号：US20130178218A1

公开(公告)日：2013-07-11

申请号：US13343761

申请日：2012-01-05

申请人： LESLIE G. GUSTAFSON ,  NATHANAEL P. KUEHNER ,  FRANK D. PANZICA ,  MARK SHAHAF

发明人： LESLIE G. GUSTAFSON ,  NATHANAEL P. KUEHNER ,  FRANK D. PANZICA ,  MARK SHAHAF

IPC分类号： H04W76/02

CPC分类号： H04W72/005 ,  H04W64/00 ,  H04W76/45

摘要： A method and apparatus for simulcasting within a communication system is provided herein. During operation, each base site will be equipped with a plurality of radios capable of transmitting on various frequencies. Base sites within the communication system will be capable of communicating on a predetermined number of channels, which may differ among base sites. A number of channels will be shared by the base sites. When a simulcast is desired, the participants are located, and a common channel is determined for communication. Thus, call participant location information is used to determine the best channel to use to meet the group's coverage needs.

摘要翻译： 本文提供了一种在通信系统内同时广播的方法和装置。 在操作期间，每个基站将配备有能够在各种频率上发射的多个无线电装置。 通信系统内的基站将能够在基站之间可能不同的预定数量的信道上进行通信。 基站将共享一些频道。 当需要同时播放时，参与者被定位，并且确定通信的公共信道。 因此，呼叫参与者位置信息用于确定用于满足组的覆盖需求的最佳信道。

公开(公告)号：US20100165904A1

公开(公告)日：2010-07-01

申请号：US12344729

申请日：2008-12-29

申请人： TIMOTHY G. WOODWARD ,  GERALD R. DROBKA ,  JAMES E. EASTWOOD ,  NATHANAEL P. KUEHNER ,  JOHN G. LAMBROU ,  TODD A. LEIGH

发明人： TIMOTHY G. WOODWARD ,  GERALD R. DROBKA ,  JAMES E. EASTWOOD ,  NATHANAEL P. KUEHNER ,  JOHN G. LAMBROU ,  TODD A. LEIGH

IPC分类号： H04H20/71

CPC分类号： H04W72/005 ,  H04W48/16 ,  H04W72/02

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。

公开(公告)号：US20100167774A1

公开(公告)日：2010-07-01

申请号：US12344932

申请日：2008-12-29

申请人： NATHANAEL P. KUEHNER ,  GERALD R. DROBKA ,  JAMES E. EASTWOOD ,  TODD A. LEIGH ,  TIMOTHY G. WOODWARD

发明人： NATHANAEL P. KUEHNER ,  GERALD R. DROBKA ,  JAMES E. EASTWOOD ,  TODD A. LEIGH ,  TIMOTHY G. WOODWARD

IPC分类号： H04B7/00

CPC分类号： H04W72/005 ,  H04W48/08 ,  H04W48/16 ,  H04W72/00 ,  H04W84/08

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。

公开(公告)号：US20080008156A1

公开(公告)日：2008-01-10

申请号：US11456375

申请日：2006-07-10

申请人： NATHANAEL P. KUEHNER

发明人： NATHANAEL P. KUEHNER

IPC分类号： H04J3/06

CPC分类号： H04B7/2687

摘要： A method and apparatus for frame synchronization in a communication network is provided. The communication network includes a plurality of base stations. The method includes determining the start time of reception of a downlink frame received from each of at least a second base station. The method also includes determining the radio frequency propagation delay associated with the downlink frame received from the each of at least a second base station. Further, the method includes determining the reference downlink frame transmission time at the first base station, based on the reception start time of the downlink frame and the radio frequency propagation delay associated with one of the at least a second base station.

摘要翻译： 提供了一种在通信网络中进行帧同步的方法和装置。 通信网络包括多个基站。 该方法包括确定从至少第二基站中的每一个接收的下行链路帧的接收的开始时间。 该方法还包括确定与从至少第二基站中的每一个接收的下行链路帧相关联的射频传播延迟。 此外，该方法包括基于下行链路帧的接收开始时间和与至少第二基站中的一个基站相关联的射频传播延迟来确定第一基站处的参考下行链路帧传输时间。