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1. 发明授权

US5963860A Method and system for transmitting a data communication from a calling communication unit associated with a wireless communication system to a called communication unit 失效
标题翻译：用于从与无线通信系统相关联的主叫通信单元向被叫通信单元发送数据通信的方法和系统
公开(公告)号：US5963860A
公开(公告)日：1999-10-05
申请号：US954345
申请日：1997-10-17
申请人： Timothy J. Muths , Steven T. Barrett
发明人： Timothy J. Muths , Steven T. Barrett
IPC分类号： H04W80/00 , H04M11/10 , H04M1/00
CPC分类号： H04W76/025 , H04W80/00
摘要： The method includes establishing a first data channel (16) between the calling communication unit (44) and the wireless communication system (40), the first data channel configured to receive and transmit the data communication (21); after establishing the first data channel and before a second data channel (22) has been established between the wireless communication system and the called communication unit (84), receiving by the calling communication unit a message (19), the message indicating that the second data channel has been established; and based on the message, the calling unit transmitting the data communication via the first data channel.
摘要翻译：该方法包括在主叫通信单元（44）和无线通信系统（40）之间建立第一数据信道（16），第一数据信道被配置为接收和发送数据通信（21）; 在建立第一数据信道之后并且在无线通信系统和被叫通信单元（84）之间建立第二数据信道（22）之前，由呼叫通信单元接收消息（19），指示第二数据信道数据通道已建立; 并且基于该消息，所述呼叫单元经由所述第一数据信道发送所述数据通信。

2. 发明授权

US5222137A Dynamic encryption key selection for encrypted radio transmissions 失效
标题翻译：加密无线电传输的动态加密关键选择
公开(公告)号：US5222137A
公开(公告)日：1993-06-22
申请号：US680188
申请日：1991-04-03
申请人： Steven T. Barrett , Kevin M. Laird , Richard E. Murray , James M. O'Connor
发明人： Steven T. Barrett , Kevin M. Laird , Richard E. Murray , James M. O'Connor
IPC分类号： H04Q7/38 , H04K1/00 , H04L9/06 , H04L9/08 , H04L9/14 , H04L9/16
CPC分类号： H04L9/0894 , H04L9/16 , H04L2209/80
摘要： A radio (100) transmits and receives encrypted signals having unencrypted key identifiers, allowing other radios having the corresponding key identifiers and encryption keys to communicate with radio (100). Prior to transmitting an encrypted message, radio (100) selects a unique key identifier automatically and uses the corresponding encryption key to encrypt the message that will be transmitted. Radio (100) transmits the key identifier in an unencrypted format with the encrypted message in order to allow other radios to determine the encryption key used in encrypting the message. When receiving an encrypted message, radio (100) uses the predetermined process stored in the radio (100) to properly select the proper encryption key for use in decrypting the incoming message.
摘要翻译：无线电（100）发送和接收具有未加密密钥标识符的加密信号，允许具有相应密钥标识符和加密密钥的其他无线电与无线电（100）通信。在发送加密消息之前，无线电装置（100）自动选择一个唯一的密钥标识符，并使用对应的加密密钥加密将被发送的消息。无线电（100）以加密的消息将密钥标识符以未加密的格式发送，以允许其他无线电确定用于加密消息的加密密钥。当接收到加密消息时，无线电设备（100）使用存储在无线电设备（100）中的预定过程来适当地选择用于解密传入消息的适当加密密钥。

3. 发明授权

US5185797A Encrypted trunked control channel system 失效
标题翻译：加密中继控制通道系统
公开(公告)号：US5185797A
公开(公告)日：1993-02-09
申请号：US676019
申请日：1991-03-27
申请人： Steven T. Barrett , Kevin M. Laird , Richard E. Murray , James M. O'Connor
发明人： Steven T. Barrett , Kevin M. Laird , Richard E. Murray , James M. O'Connor
IPC分类号： H04K1/00 , H04L9/00
CPC分类号： H04K1/00 , H04L9/0891 , H04L9/16 , H04L2209/80
摘要： A trunked communication system (400) transmits and receives encrypted signals over the system control channel (402). The trunked system (b 400) includes a plurality of radios (300) which can communicate with the communication system via control channel (402). By using control information signals and system information signals radios (300) can determine if it they are capable of decrypting the encrypted control information signals sent over the control channel (402). This is done by first determining if the encryption identification field found in the unencrypted system information signal matches an encryption identification field found in radio (300). If a match is found between the radio's encryption identification and the encryption identification field in the system identification signal radio (300) loads the encryption into the encryption circuitry in order to successfully decrypt the control information signals.
摘要翻译：集群通信系统（400）通过系统控制信道（402）发送和接收加密的信号。集群系统（b 400）包括可以经由控制信道（402）与通信系统通信的多个无线电设备（300）。通过使用控制信息信号和系统信息信号，无线电装置（300）可以确定它们是否能够对通过控制信道（402）发送的加密的控制信息信号进行解密。这通过首先确定在未加密的系统信息信号中发现的加密识别字段是否匹配在无线电（300）中找到的加密识别字段来完成。如果在无线电装置的加密识别和系统识别信号无线电装置（300）中的加密识别字段之间找到匹配，则将加密加密到加密电路中，以成功解密控制信息信号。

4. 发明授权

US6081706A Method and system for transmitting data to a mobile communication unit 失效
标题翻译：用于向移动通信单元发送数据的方法和系统
公开(公告)号：US6081706A
公开(公告)日：2000-06-27
申请号：US953125
申请日：1997-10-17
申请人： Timothy J. Muths , Steven T. Barrett
发明人： Timothy J. Muths , Steven T. Barrett
IPC分类号： H04N1/32 , H04M11/00 , H04N1/00 , H04Q7/38 , H04M11/10
CPC分类号： H04N1/001
摘要： The system includes a first data channel established between the mobile communication unit and a wireless communication system. The first data channel is configured to receive the data communication. A second data channel is established between the wireless communication system and another communication system. The second data channel is configured to receive the data communication. An interworking unit is responsive to the first data channel and the second data channel. The interworking unit receives the data communication from the second data channel and queues the data communication when the first data channel cannot receive the data communication.
摘要翻译：该系统包括在移动通信单元和无线通信系统之间建立的第一数据信道。第一数据信道被配置为接收数据通信。在无线通信系统和另一通信系统之间建立第二数据信道。第二数据通道被配置为接收数据通信。互通单元响应于第一数据信道和第二数据信道。互通单元从第二数据信道接收数据通信，并且当第一数据信道不能接收数据通信时对数据通信进行排队。

5. 发明授权

US5199069A Automatic encryption selector 失效
标题翻译：自动加密选择器
公开(公告)号：US5199069A
公开(公告)日：1993-03-30
申请号：US660186
申请日：1991-02-25
申请人： Steven T. Barrett , Bruce D. Oberlies
发明人： Steven T. Barrett , Bruce D. Oberlies
IPC分类号： H04K1/00 , H04L9/00
CPC分类号： H04K1/00 , H04L9/12 , H04L9/16 , H04L2209/80
摘要： A radio (100) capable of automatically selecting an encryption algorithm from among a plurality of algorithms (122 and 124) is disclosed. The method for automatically selecting the proper encryption hybrid includes the steps of: attempting to decrypt the encrypted signal with one of the plurality of encryption algorithms; determining if the encryption algorithm used to decrypt the encrypted signal matches the encryption algorithm used by the encrypted signal; and developing a control signal upon the proper matching of the encryption algorithms.
摘要翻译：公开了能够从多个算法（122和124）中自动选择加密算法的无线电（100）。用于自动选择适当的加密混合的方法包括以下步骤：尝试用所述多个加密算法之一对所述加密信号进行解密; 确定用于解密加密信号的加密算法是否与加密信号使用的加密算法相匹配; 以及在加密算法的适当匹配之后开发控制信号。

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