公开(公告)号：US10524260B2

公开(公告)日：2019-12-31

申请号：US15977541

申请日：2018-05-11

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yunhai Yang ,  Hans C. Sowa ,  Daniel J. Mcdonald

IPC: H04W72/04 ,  H04W4/10 ,  H04W76/45 ,  H04W84/08

Abstract: A device, system and method for preventing audio loss is provided. A device receives scheduling data, for a plurality of timeslots, indicative of when different communication types are to occur in a present voicecall, the plurality of timeslots including at least one data timeslot for transmitting data on the present voicecall. When a state of the present voicecall associated with a potential collision with the data for transmission in the at least one data timeslot is determined, the device cancels transmission of the data in the at least one data timeslot.

公开(公告)号：US08781132B2

公开(公告)日：2014-07-15

申请号：US13678747

申请日：2012-11-16

Applicant: Motorola Solutions, Inc.

Inventor： Chris A. Kruegel ,  Thomas J. Senese ,  Hans C. Sowa

IPC: H04L9/08 ,  H04W12/04 ,  H04L29/06

CPC classification number: H04W12/04 ,  H04L63/065 ,  H04L63/068

Abstract: Disclosed is a radio system, method, and device for a mobile station to indicate to an authentication controller, in an authentication response message, which of a plurality of group key link layer encryption keys (GKEK)s it currently has in its possession, and to work with the authentication controller to more intelligently manage multiple GKEKs. The authentication controller can use the information obtained from the authentication response message to determine which of a plurality of GKEKs to advertise in a key announcement broadcast. Furthermore, individual requests for a future LLE key (LEK) to be used for link layer encryption (LLE) encrypting and decrypting inbound and outbound group communications between base station(s) and mobile station(s) are responded to with a broadcast GKEK-encrypted transmission including the future LEK. Only the requesting mobile station transmits an acknowledgment packet in response to the broadcast.

Abstract translation: 公开了一种无线电系统，方法和装置，用于移动台向认证控制器指示认证响应消息中当前拥有的多个组密钥链路层加密密钥（GKEK）中的哪一个，以及 使用认证控制器更智能地管理多个GKEK。 认证控制器可以使用从认证响应消息获得的信息来确定在密钥通告广播中广告的多个GKEK中的哪一个。 此外，用于对基站和移动台之间的入站和出站组通信进行加密和解密的链路层加密（LLE）的未来LLE密钥（LEK）的单独请求通过广播GKEK- 加密传输，包括未来的LEK。 只有请求移动台响应于广播才发送确认分组。

公开(公告)号：US08948378B2

公开(公告)日：2015-02-03

申请号：US13676612

申请日：2012-11-14

Applicant: Motorola Solutions, Inc.

Inventor： Hans C. Sowa ,  Thomas J. Senese

IPC: H04K1/10 ,  H04W12/04 ,  H04L29/06 ,  H04L9/30 ,  H04L9/08

CPC classification number: H04W12/04 ,  H04L9/0822 ,  H04L9/0891 ,  H04L9/30 ,  H04L29/06149 ,  H04L2463/062 ,  H04W12/02

Abstract: Disclosed is a method of rekeying radios for link layer encryption (LLE) in a radio network using a bifurcated crypto period. During a first portion of a first LLE crypto period during which a first LLE key (LEK) is used to LLE encrypt communications between a base station and mobile stations operating within a corresponding coverage area of the base station, a radio network communications device prevents individual ones of the mobile stations from requesting a second LEK to be used during a second LLE crypto period after the first LLE crypto period. During a second portion of the first LLE crypto period, the radio network communications device allows individual ones of the mobile stations to request the second LEK. A mobile station configured to operate in accordance with the bifurcated crypto period, and provide information regarding keys in its possession via an authentication response ISP, is also disclosed.

Abstract translation: 公开了一种使用分叉密码周期在无线电网络中对用于链路层加密（LLE）的无线电进行密钥校正的方法。 在第一LLE密码周期的第一部分期间，第一LLE密钥（LEK）用于LLE加密基站与在基站的相应覆盖区域内工作的移动站之间的通信，无线电网络通信设备防止个体 在第一LLE加密周期之后的第二个LLE加密期间，请求第二LEK的移动台中的一个移动台被使用。 在第一LLE密码周期的第二部分期间，无线电网络通信设备允许移动台中的各个请求第二LEK。 移动台被配置为根据分叉密码周期进行操作，并且通过认证响应ISP提供关于其拥有的密钥的信息。