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11. 发明授权

US07339892B1 System and method for dynamic control of data packet fragmentation threshold in a wireless network 有权
标题翻译：无线网络数据包分片阈值的动态控制系统和方法
公开(公告)号：US07339892B1
公开(公告)日：2008-03-04
申请号：US09751332
申请日：2000-12-28
申请人： Darwin A. Engwer , Jonathan M. Zweig
发明人： Darwin A. Engwer , Jonathan M. Zweig
IPC分类号： H04J3/22 , H04L12/54
CPC分类号： H04L47/10 , H04L47/14 , H04L47/365
摘要： In a wireless network system having a wired backbone network, one or more access points (APs), and one or more wireless units (WUs), a technique wherein an AP automatically determines a factor indicative of the error(s) occurring in the transmissions of one or more data packets to associated WUs, and automatically adjust the fragmentation threshold in accordance with the transmission error factor. The AP adjusts the fragmentation threshold in a manner that the data throughput is increased. Since the AP automatically and periodically gauges the wireless medium for RF interference that can cause data transmission errors, the fragmentation threshold can be dynamically adjusted to respond to changes in the wireless medium, such as when a microwave oven is turned on, and/or when a Blue Tooth device is traversing the wireless medium, etc. This is much more effective than having a system administrator periodically gauge the wireless medium for the purpose of selecting the appropriate fragmentation threshold.
摘要翻译：在具有有线骨干网络，一个或多个接入点（AP）和一个或多个无线单元（WU）的无线网络系统中，一种AP自动地确定指示在传输中发生的错误的因素的技术的一个或多个数据分组到相关联的WU，并且根据传输误差因子自动调整分段阈值。 AP以增加数据吞吐量的方式调整分段阈值。由于AP自动并周期性地测量可能导致数据传输错误的RF干扰的无线介质，所以可以动态地调整分段阈值以响应无线介质中的变化，例如当微波炉被打开时和/或何时蓝牙设备正在穿过无线介质等。这比使系统管理员周期性地测量无线介质以选择适当的分段阈值的目的更有效。

12. 发明授权

US5444781A Method and apparatus for decryption using cache storage 失效
标题翻译：使用缓存存储解密的方法和装置
公开(公告)号：US5444781A
公开(公告)日：1995-08-22
申请号：US254774
申请日：1994-06-06
申请人： Kerry E. Lynn , Jonathan M. Zweig , Richard W. Mincher
发明人： Kerry E. Lynn , Jonathan M. Zweig , Richard W. Mincher
IPC分类号： H04L9/08 , H04L9/12 , H04L9/18 , H04L9/22 , H04L9/26
CPC分类号： H04L9/0662 , H04L9/0894 , H04L9/12 , H04L2209/12 , H04L2209/34
摘要： A method and apparatus for decryption using cache storage wherein imported ciphertext is decrypted to produce unencrypted plaintext data. As a communication sequence containing an initialization vector and a block of ciphertext is imported, the initialization vector is applied to a cache and to a decoder. The initialization vector is then compared with other initialization vectors stored in the cache to determine whether the specific initialization vector has previously been received and stored. If the specific initialization vector is found to be stored in the cache, then the PN sequence associated with that initialization vector is written to the decoder, and the stored PN sequence is used to decode the imported ciphertext.If a determination is made that the initialization vector has not been previously received, then the read cache signal instructs the multiplexer to connect the PN generator to the decoder, and the initialization vector is used to generate a new PN sequence. In order to improve the efficiency of future ciphertext decoding utilizing this specific initialization vector, the PN sequence associated with the initialization vector is then stored in the cache together with its corresponding initialization vector. When the next block of ciphertext is received using the same initialization vector, the PN sequence need not be regenerated by the PN generator, but rather may be read from the cache as a stored sequence.
摘要翻译：一种使用高速缓冲存储器进行解密的方法和装置，其中导入的密文被解密以产生未加密的明文数据。作为包含初始化向量和密文块的通信序列，将初始化向量应用于缓存和解码器。然后将初始化向量与存储在高速缓存中的其他初始化向量进行比较，以确定特定初始化向量是否先前已被接收和存储。如果发现特定的初始化向量被存储在高速缓存中，则将与该初始化向量相关联的PN序列写入解码器，并且使用存储的PN序列对导入的密文进行解码。如果确定先前没有接收到初始化向量，则读取的高速缓存信号指示多路复用器将PN发生器连接到解码器，并且使用初始化向量来生成新的PN序列。为了提高利用该特定初始化向量的未来密文解码的效率，与初始化向量相关联的PN序列与其对应的初始化向量一起存储在高速缓存中。当使用相同的初始化向量接收到下一个密文块时，PN序列不需要由PN发生器重新生成，而是可以作为存储的序列从高速缓存读取。

13. 发明授权

US07308279B1 Dynamic power level control on transmitted messages in a wireless LAN 有权
标题翻译：对无线局域网中传输的消息进行动态功率电平控制
公开(公告)号：US07308279B1
公开(公告)日：2007-12-11
申请号：US09753228
申请日：2000-12-28
申请人： Jonathan M. Zweig
发明人： Jonathan M. Zweig
IPC分类号： H04Q7/20
CPC分类号： H04W52/10 , H04W84/12
摘要： Briefly, in one embodiment, a method for enhancing aggregate data throughput for a number of wireless devices. First, a signal having a first level of effective isotropic radiated power is transmitted by a first wireless electronic device. In the event that a response to the signal is received by the first wireless electronic device, the level of effective isotropic radiated power is reduced to a second level of effective isotropic radiated power. In another embodiment, the aggregate amount of data throughput may be enhanced by monitoring a level of effective isotropic radiated power associated with at least one beacon produced by the first wireless electronic device on a first communication channel. The level of effective isotropic radiated power of the beacon is then reduced if the monitored level is greater than a predetermined power level threshold.
摘要翻译：简而言之，在一个实施例中，一种用于增强多个无线设备的聚合数据吞吐量的方法。首先，由第一无线电子设备发送具有第一级有效各向同性辐射功率的信号。在由第一无线电子设备接收到对信号的响应的情况下，有效各向同性辐射功率的电平被降低到有效各向同性辐射功率的第二水平。在另一个实施例中，可以通过监视与由第一无线电子设备在第一通信信道上产生的至少一个信标相关联的有效各向同性辐射功率的水平来增强数据吞吐量的总和。如果所监视的电平大于预定功率电平阈值，则信标的有效各向同性辐射功率的电平被降低。

14. 发明授权

US07039190B1 Wireless LAN WEP initialization vector partitioning scheme 失效
标题翻译：无线LAN WEP初始化向量分割方案
公开(公告)号：US07039190B1
公开(公告)日：2006-05-02
申请号：US09753229
申请日：2000-12-28
申请人： Darwin A. Engwer , Jonathan M. Zweig
发明人： Darwin A. Engwer , Jonathan M. Zweig
IPC分类号： H04K1/00
CPC分类号： H04L63/08 , H04L9/0662 , H04L9/3271 , H04L63/04 , H04L2209/80 , H04W12/06 , H04W84/12
摘要： In one embodiment, an authentication method features the generation of an initialization vector at a first electronic device and the determination at the first electronic device whether the initialization vector falls within a first group of initialization vectors. The first group includes a plurality of initialization vectors solely used in connection with an authentication sequence. Information is encrypted using in part the initialization vector for return to a second electronic device if the initialization vector falls within the first group.
摘要翻译：在一个实施例中，认证方法的特征在于在第一电子设备处生成初始化向量，以及在第一电子设备处确定初始化向量是否落入第一组初始化向量内。第一组包括仅与认证序列一起使用的多个初始化向量。如果初始化向量落在第一组内，则部分地使用初始化向量来加密信息以返回到第二电子设备。

15. 发明授权

US5345508A Method and apparatus for variable-overhead cached encryption 失效
标题翻译：用于可变开销缓存加密的方法和装置
公开(公告)号：US5345508A
公开(公告)日：1994-09-06
申请号：US110402
申请日：1993-08-23
申请人： Kerry E. Lynn , Jonathan M. Zweig , Richard W. Mincher
发明人： Kerry E. Lynn , Jonathan M. Zweig , Richard W. Mincher
IPC分类号： H04L9/08 , H04L9/12 , H04L9/18 , H04L9/22
CPC分类号： H04L9/0662 , H04L9/12 , H04L2209/12
摘要： A digital encryption structure allows the varying of the computational overhead by selectively reusing, according to the desired level of security, a pseudorandom encoding sequence at the transmitter end and by storing and reusing pseudorandom decoding sequences, associated with one or more transmitters at the receiver end. A public initialization vector is combined with a secret key to produce a deterministic sequence from a pseudorandom number generator. This pseudorandom sequence in turn, is used to convert plaintext to ciphertext. The sequence may be selectively reused by storing the sequence to a transmitter memory cache and iteratively reading the sequence from memory according to a counter which controls the level of security of the encryption system. The ciphertext is decrypted on the receiver end by invertibly combining the ciphertext with the same pseudorandom sequence used by the transmitter to originally encode the plaintext. The pseudorandom sequence is independently generated by the receiver end using the original key and initialization vector used in the transmitter end. Once generated in the receiver, the pseudorandom sequence is stored in a receiver cache for reuse with each iterative use of the stored transmitter pseudorandom sequence.
摘要翻译：数字加密结构允许通过根据期望的安全级别有选择地重用计算开销来改变发射机端的伪随机编码序列，并通过存储和重用与接收机端的一个或多个发射机相关联的伪随机解码序列。将公共初始化向量与秘密密钥组合以从伪随机数发生器产生确定性序列。这个伪随机序列依次用于将明文转换为密文。可以通过将序列存储到发送器存储器高速缓存中并且根据控制加密系统的安全级别的计数器从存储器迭代地读取序列来选择性地重新使用该序列。通过将密文与发射机使用的相同的伪随机序列可逆地组合以对原始的明文进行编码，在接收者端解密密文。伪随机序列由接收机端使用发射机端使用的原始密钥和初始化向量独立生成。一旦在接收机中产生，则伪随机序列被存储在接收器高速缓存中以便重复使用所存储的发射机伪随机序列的每个迭代使用。

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