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    • 1. 发明申请
    • Reducing Security Protocol Overhead In Low Data Rate Applications Over A Wireless Link
    • 通过无线链路降低低数据速率应用中的安全协议开销
    • US20080044012A1
    • 2008-02-21
    • US11464626
    • 2006-08-15
    • Jan-Erik EkbergAntti Lappetelainen
    • Jan-Erik EkbergAntti Lappetelainen
    • H04L9/30
    • H04L9/065H04L63/162H04L2209/08H04L2209/80H04W12/0013
    • A wireless communication module to provide security at a baseband layer is disclosed. A payload of plaintext may be divided into partitions. The module may use a block cipher such as the Advanced Encryption Standard (AES) algorithm to process a unique initiation vector (IV) for each partition so that each partition may be XORed with a key stream based on a respective IV, the result providing ciphertext. The IV may include a nonce, an upper level packet counter, a packet counter and a block counter. The state of the counters may be incremented in a predetermined pattern so as to provide a unique IV for use with each partition. The ciphertext may be transmitted in a packet with a security bit indicating that the payload is encrypted but omitting the nonce. Encrypted packets may include an integrity check value (ICV) to provide for integrity of the encrypted message.
    • 公开了一种在基带层提供安全性的无线通信模块。 明文的有效载荷可以划分为分区。 模块可以使用诸如高级加密标准(AES)算法的分组密码来处理每个分区的唯一的初始向量(IV),使得每个分区可以基于相应的IV与密钥流进行异或,提供密文的结果 。 IV可以包括随机数,高级分组计数器,分组计数器和块计数器。 计数器的状态可以以预定模式递增,以便提供与每个分区一起使用的唯一IV。 密文可以在具有指示有效载荷被加密但省略随机数的安全位的分组中传送。 加密分组可以包括完整性校验值(ICV),以提供加密消息的完整性。
    • 3. 发明申请
    • CARRIER SENSING MULTIPLE ACCESS WITH COLLISION AVOIDANCE SCHEME OPTIMIZED FOR A PRIORI KNOWN CARRIER USAGE FOR LOW DUTY CYCLE SYSTEMS
    • 携带者感知具有冲突避免方案的多路访问优化用于低占空比系统的先行运动载体
    • US20070116033A1
    • 2007-05-24
    • US11623603
    • 2007-01-16
    • Jukka ReunamakiJuha SalokannelAntti LappetelainenVisa Smolander
    • Jukka ReunamakiJuha SalokannelAntti LappetelainenVisa Smolander
    • H04L12/413
    • H04W16/14H04L1/16H04W24/00H04W48/08H04W74/00H04W84/10Y02D70/142Y02D70/144
    • Systems and methods for a communication system implementing a short range communication link between devices advertising available information and services, and user devices which may initiate a request for further information or services. The communication system provides a low power solution utilizing an optimized combination of a carrier sensing and frequency division multiple access to avoid collisions. The optimization involves the use of a random mean zero value offset appended to the advertising devices' transmission frames. The offset increases the likelihood that a first advertising device will recognize the transmissions of another advertiser's transmissions (i.e., determining that a channel is busy) and avoid unnecessary transmissions that will result in collisions. Upon recognition, the first advertiser may shift its transmission frame accordingly, thereby avoiding transmission collisions between advertisers. The communication system may be implemented in either a StandAlone LowRate system, or in a device with a pre-existing operational Bluetooth implementation.
    • 用于实现广告可用信息和服务的设备之间的短距离通信链路的通信系统的系统和方法,以及可以发起对更多信息或服务的请求的用户设备。 通信系统利用载波感测和频分多址接入的优化组合来提供低功率解决方案,以避免碰撞。 优化包括使用附加到广告设备的传输帧的随机均值零值偏移。 该偏移增加了第一广告设备将识别另一广告商的传输(即,确定频道正忙)的传输的可能性,并避免将导致冲突的不必要的传输。 一旦识别,第一广告商可以相应地改变其传输帧,从而避免广告商之间的传输冲突。 通信系统可以在StandAlone LowRate系统中或在具有预先存在的操作蓝牙实现的设备中实现。
    • 4. 发明申请
    • Transmitting of cell management information in a cellular communication network
    • 在蜂窝通信网络中传送小区管理信息
    • US20060009210A1
    • 2006-01-12
    • US10937296
    • 2004-09-10
    • Mikko RinneAntti LappetelainenJussi Ojala
    • Mikko RinneAntti LappetelainenJussi Ojala
    • H04Q7/20
    • H04W52/343H04B17/391H04W36/18H04W48/12
    • A method, system, and functional elements for transmitting cell management information in a cellular communication network, in which each cell comprises a base station communicating using at least one frequency and is defined by a radio coverage area of its base station, wherein a communication between a mobile station and a base station is based on a time frame structure comprising a plurality of time slots, in which transmitting time slots in the time frame structures of neighboring base stations, in which time slots cell management information relating to the respective cell is to be transmitted, are shifted against each other on a time basis. The transmitting of cell management information can be based on a predetermined transmission parameter, the value of which is representative of the radio coverage area of a base station.
    • 一种用于在蜂窝通信网络中发送小区管理信息的方法,系统和功能元件,其中每个小区包括使用至少一个频率进行通信的基站,并由其基站的无线电覆盖区域定义,其中, 移动台和基站是基于包括多个时隙的时帧结构,其中相邻基站的时隙结构中的发送时隙,其中与各个小区有关的时隙小区管理信息为 被传输,在时间基础上相互偏移。 小区管理信息的发送可以基于其值代表基站的无线电覆盖区域的预定传输参数。
    • 10. 发明申请
    • Power control method of discontinuous transmission
    • 不连续传输的功率控制方法
    • US20050107108A1
    • 2005-05-19
    • US11025014
    • 2004-12-30
    • Seppo HamalainenAntti Lappetelainen
    • Seppo HamalainenAntti Lappetelainen
    • H04B7/26H04B7/005H04W52/26H04W52/44H04W52/60H04B7/00
    • H04W52/267H04W52/44H04W52/60
    • According to the proposed method, the frequency of power control commands transmitted on a power control channel is changed according to the traffic. When the traffic becomes slower in at least one direction due to a DTX state, a slower transfer rate, asymmetric data transfer or for any other reason, the frequency of power control commands is lowered. Both the base station and the personal station may lower the frequency of the commands which they send. An alternative to changing the frequency of power control commands is to change the energy of power control bits. The duration of power control bits must hereby be extended, if a standard bit error ration is desired. If the system is frequency-divided and/or time-divided and uses frequency control command of several bits, the length of the command word may be shortened in addition to or as an alternative to the change in frequency. The power control algorithm may be changed several times during a traffic connection.
    • 根据所提出的方法,在功率控制信道上发送的功率控制命令的频率根据流量而改变。 当由于DTX状态,较慢的传输速率,不对称数据传输或由于任何其他原因,当至少一个方向的业务变得较慢时,功率控制命令的频率降低。 基站和个人站都可能降低发送命令的频率。 改变功率控制命令频率的替代方案是改变功率控制位的能量。 必须延长功率控制位的持续时间,如果需要标准误码率。 如果系统被分频和/或分时,并且使用几位的频率控制命令,除了频率变化之外或作为频率变化的替代,可以缩短命令字的长度。 功率控制算法可能在流量连接期间被改变多次。