公开(公告)号：US5448569A

公开(公告)日：1995-09-05

申请号：US226724

申请日：1994-04-12

申请人： Chia-Chi Huang ,  David F. Bantz ,  Frederic Bauchot ,  Kadathur S. Natarajan ,  Anand Narasimhan ,  Michele M. Wetterwald

发明人： Chia-Chi Huang ,  David F. Bantz ,  Frederic Bauchot ,  Kadathur S. Natarajan ,  Anand Narasimhan ,  Michele M. Wetterwald

IPC分类号： G06F13/00 ,  H04L12/28 ,  H04W24/00 ,  H04W36/08 ,  H04W36/30 ,  H04W84/12 ,  H04B7/216 ,  H04B7/26

CPC分类号： H04W36/30 ,  H04B1/713 ,  H04W24/00 ,  H04W36/08 ,  H04W84/12

摘要： Methods for handoff in a wireless communication network including a local area network connected to a plurality of base stations, each of which has a geographic area, defined as a cell, within which mobile stations can communicate with a base station, with each such base station being capable of performing bidirectional wireless communication with one or more of said mobile stations under control of a controller, with communication between base stations and mobile stations being performed by frequency hopping, with there being n available frequency hopping channels in a fixed frequency band, with each channel being of a same fixed duration and having a fixed frequency different than another channel. The handoff method employs structure and techniques for determining by a mobile station that the quality of transmission between itself and a current base station has degraded below a predetermined performance level, structure and technique for the mobile station to listen to each of successive frequency channels for a duration substantially less than the fixed duration of a channel until it senses a transmission from another base station, and structure and techniques for transferring control of the mobile station to another base station in response to the sensed transmission.

摘要翻译： 在包括连接到多个基站的局域网的无线通信网络中的切换的方法，每个基站具有被定义为小区的地理区域，移动台可以在其中与基站进行通信，每个这样的基站 能够在控制器的控制下与一个或多个所述移动台进行双向无线通信，基站和移动台之间的通信是通过跳频执行的，在固定频带中存在n个可用的跳频信道， 每个通道具有相同的固定持续时间并且具有与另一通道不同的固定频率。 切换方法采用结构和技术来确定移动台本身与当前基站之间的传输质量已经降低到低于预定性能水平的结构和技术，移动台用于监听每个连续频率信道的结构和技术 持续时间基本上小于信道的固定持续时间，直到其感测到来自另一个基站的传输，以及用于响应于所感测的传输将移动台的控制传送到另一个基站的结构和技术。

公开(公告)号：US5539824A

公开(公告)日：1996-07-23

申请号：US348656

申请日：1994-12-02

申请人： Ronald E. Bjorklund ,  Frederic Bauchot ,  Michele M. Wetterwald ,  Shay Kutten ,  Amir Herzberg

发明人： Ronald E. Bjorklund ,  Frederic Bauchot ,  Michele M. Wetterwald ,  Shay Kutten ,  Amir Herzberg

IPC分类号： G09C1/00 ,  H04L9/08 ,  H04L9/32 ,  H04N9/32

CPC分类号： H04L9/0836 ,  H04L9/321 ,  H04L2209/80

摘要： This invention deals with a safe key distribution and authentication in a data communication network (e.g. wireless LAN type of network).The network includes a network manager to which are connected, via a LAN wired circuit, one or more base stations. Individual remote stations are, in turn, wirelessly connected to an installed base station.One essential function for achieving security in such a network, is a mechanism to reliably authenticate the exchanges of data between communicating parties. This involves the establishment of session keys, which keys need to be distributed safely to the network components. An original and safe method is provided with this invention for key distribution and authentication during network installation, said method including using the first installed base station for generating a network key and a backbone key, and then using said first installed base station for subsequent remote station or additional base station installations while avoiding communicating said network key.

摘要翻译： 本发明涉及数据通信网络（例如，无线LAN类型的网络）中的安全密钥分发和认证。 该网络包括经由LAN有线电路连接到一个或多个基站的网络管理器。 反过来，各个远程站无线连接到已安装的基站。 在这种网络中实现安全性的一个基本功能是可靠地认证通信方之间数据交换的机制。 这涉及建立会话密钥，这些密钥需要安全地分发给网络组件。 本发明提供了一种用于网络安装期间的密钥分发和认证的原始和安全的方法，所述方法包括使用第一安装的基站生成网络密钥和骨干密钥，然后使用所述第一安装的基站用于后续的远程站 或附加的基站安装，同时避免通信所述网络密钥。