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    • 1. 发明授权
    • System selection method and arrangement for mobile wireless communication devices
    • 移动无线通信设备的系统选择方法和布置
    • US08391865B2
    • 2013-03-05
    • US11691170
    • 2007-03-26
    • Doug DunnAmit KalhanTimothy ThomeHenry Chang
    • Doug DunnAmit KalhanTimothy ThomeHenry Chang
    • H04W4/00
    • H04W48/18H04W48/16H04W60/04H04W88/06
    • An exemplary method for selecting one of a plurality of systems on a multi-mode device capable of communicating on a first air interface technology and a second air interface technology is disclosed. Initially, a carrier input associated with one of the first and second air interface technologies is received. The carrier input typically defines at least one system selection event. Next, a first network acquisition attempt of the other one of the first and second air interface technologies is triggered responsive to the system selection event. The results of the first network acquisition attempt are determined and stored, and subsequently used for subsequent system selection determinations between the first and second air interface technologies.
    • 公开了一种用于在能够在第一空中接口技术和第二空中接口技术上通信的多模式设备上选择多个系统中的一个的示例性方法。 首先,接收与第一和第二空中接口技术之一相关联的载波输入。 载波输入通常定义至少一个系统选择事件。 接下来,响应于系统选择事件触发第一和第二空中接口技术中的另一个的第一网络获取尝试。 确定并存储第一次网络获取尝试的结果,随后用于第一和第二空中接口技术之间的后续系统选择确定。
    • 2. 发明授权
    • System and method for broadcasting overhead parameters in poor coverage regions
    • 不良覆盖地区广播开销参数的系统和方法
    • US08792468B2
    • 2014-07-29
    • US11746501
    • 2007-05-09
    • Amit KalhanHenry ChangTimothy ThomeDoug Dunn
    • Amit KalhanHenry ChangTimothy ThomeDoug Dunn
    • H04B7/216
    • H04W48/12
    • To improve WWAN coverage, an access node broadcasts overhead messages on a first channel covering a first channel environment and a second channel covering a second channel environment within a coverage region. The overhead messages carry network overhead parameters for allowing wireless mobile devices to acquire and maintain traffic channels within the cellular system. The overhead message channels are configured so that a user perceives uninterrupted wireless services while moving through different channel environments in the coverage region. In one embodiment, the overhead message channels are separate physical channels configured with different broadcast parameters to provide coverage in different environments. In another embodiment, the overhead parameter information is segregated into base and extended components that are encoded and layer modulated onto separate logical channels. Using layered modulation, wireless mobile devices can receive base components in poor coverage regions. The base components include overhead parameters for acquiring a WWAN channel.
    • 为了改善WWAN覆盖,接入节点在覆盖第一信道环境的第一信道和覆盖覆盖区域内的第二信道环境的第二信道上广播开销消息。 开销消息携带网络开销参数,以允许无线移动设备获取和维护蜂窝系统内的业务信道。 开销消息信道被配置为使得用户在移动通过覆盖区域中的不同信道环境时感知不间断的无线服务。 在一个实施例中,开销消息信道是配置有不同广播参数的分离物理信道,以在不同环境中提供覆盖。 在另一个实施例中,开销参数信息被分离成基本和扩展组件,其被编码和层调制到单独的逻辑信道上。 使用分层调制,无线移动设备可以在较差的覆盖区域中接收基本组件。 基本组件包括用于获取WWAN通道的开销参数。
    • 4. 发明授权
    • Apparatus, system, and method for location information management in a portable communication device
    • 用于便携式通信设备中的位置信息管理的装置,系统和方法
    • US08165606B2
    • 2012-04-24
    • US11317406
    • 2005-12-22
    • Doug DunnAmit KalhanHenry Chang
    • Doug DunnAmit KalhanHenry Chang
    • H04W24/00
    • H04W4/02H04L67/18H04W4/90H04W36/14H04W64/00H04W76/50H04W84/12H04W88/06
    • An apparatus, system, and method for managing geographical location information of a portable communication device by determining and storing the geographic location information while registered on a cellular communication system in response to detecting an available wireless local area network (WLAN) system. When the portable communication device is communicating on the cellular communication system and a WLAN access point is detected, a location determination procedure is performed and the resulting geographical location information is stored at the portable communication device. When the portable communication device is communicating with a wireless access point of a WLAN system, and a second access point is detected, the portable communication device registers to the cellular communication network, if not already registered, and performs the geographical location determination procedure. Geographical location information is transmitted to a public safety answering point (PSAP) or network entity when an emergency call is executed.
    • 响应于检测到可用的无线局域网(WLAN)系统,通过在蜂窝通信系统上注册而确定并存储地理位置信息来管理便携式通信设备的地理位置信息的装置,系统和方法。 当便携式通信设备在蜂窝通信系统上进行通信并且检测到WLAN接入点时,执行位置确定过程,并将得到的地理位置信息存储在便携式通信设备中。 当便携式通信设备正在与WLAN系统的无线接入点通信,并且检测到第二接入点时,便携式通信设备如果尚未注册,则向蜂窝通信网络注册,并且执行地理位置确定过程。 当执行紧急呼叫时,地理位置信息被传送到公共安全应答点(PSAP)或网络实体。
    • 5. 发明授权
    • Wireless communication coding and transmission systems and methods
    • 无线通信编码和传输系统及方法
    • US07508791B2
    • 2009-03-24
    • US11263893
    • 2005-10-31
    • Amit KalhanDoug DunnHenry ChangRamon Khalona
    • Amit KalhanDoug DunnHenry ChangRamon Khalona
    • H04L12/56
    • H04L1/0041H04L1/0001H04L1/08H04L1/1819
    • In a wireless communication system, data is encoded by packet indifferent (PI) coding and some packets are transmitted omnidirectionally while supplemental packets are transmitted directionally to a user with a poor air link. PI encoding is defined herein as encoding in which the source data can be recovered from any K of the encoded packets, regardless of which of the encoded packets are received, where K=N+A. N is equal to the number of packets in the source data and A is the number of additional packets required due to the PI encoding. A subset of M data packets can be sent to one or many users from an omnidirectional antenna, where M is greater than or equal to K. If less than K data packets are received by at least one user, then the data block is not successfully received by that user. A number R of supplemental packets can be sent to users that did not receive K data packets successfully. The supplemental packets can be sent by a directional antenna to the specific user or users that did not receive K data packets.
    • 在无线通信系统中,通过分组无关(PI)编码对数据进行编码,并且一些分组被全向传输,而补充分组被定向地传送给具有差的空中链路的用户。 PI编码在这里被定义为可以从任何K个编码分组恢复源数据的编码,而不管接收到哪个编码分组,其中K = N + A。 N等于源数据中的数据包数,A是由于PI编码而需要的附加数据包的数量。 M数据分组的子集可以从全向天线发送给一个或多个用户,其中M大于或等于K.如果少于K个数据分组被至少一个用户接收,则数据块不成功 由该用户接收。 补充数据包R可以发送给没有成功接收K个数据包的用户。 可以通过定向天线将补充分组发送给不接收K个数据分组的特定用户或用户。