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    • 1. 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。
    • 2. 发明申请
    • SYSTEM AND METHOD FOR BROADCASTING OVERHEAD PARAMETERS IN POOR COVERAGE REGIONS
    • 在覆盖范围广泛的覆盖参数的系统和方法
    • US20080279168A1
    • 2008-11-13
    • 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。
    • 3. 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。
    • 4. 发明申请
    • SYSTEM AND METHOD FOR BROADCASTING PAGE MESSAGES IN POOR COVERAGE REGIONS
    • 在广泛覆盖地区广播信息的系统和方法
    • US20080280630A1
    • 2008-11-13
    • US11746532
    • 2007-05-09
    • Amit KALHANHenry ChangTimothy ThomeDoug Dunn
    • Amit KALHANHenry ChangTimothy ThomeDoug Dunn
    • H04Q7/38
    • H04W68/02H04L1/0004H04L1/0071H04L1/1607H04L1/1867
    • A system and method for paging wireless mobile devices selectively varies the effective modulation order of a paging channel to achieve improved coverage in a wireless wide area network (WWAN) cell. In one embodiment, the paging channel modulation order is selected based on a measured signal strength and/or common channel error rate. The selected modulation order is directly related to the quality of the channel environment. In another embodiment, a page message is segregated into base and extended components that are layer modulated. With layered modulation, wireless mobile devices in good coverage regions can successfully demodulate both the base and extended components to recover the entire page message. Wireless mobile devices in poor coverage regions can successfully demodulate the base component of the page message, and then request that the extended component of the page message be re-broadcast as a base component to thereby recover the entire page message.
    • 用于寻呼无线移动设备的系统和方法选择性地改变寻呼信道的有效调制阶数以在无线广域网(WWAN)小区中实现改进的覆盖。 在一个实施例中,基于测量的信号强度和/或公共信道错误率来选择寻呼信道调制阶数。 选择的调制顺序与通道环境的质量直接相关。 在另一个实施例中,页面消息被分离成被层调制的基本和扩展组件。 通过分层调制,良好覆盖区域中的无线移动设备可以成功地解调基本和扩展组件,以恢复整个页面消息。 不良覆盖区域中的无线移动设备可以成功地解调页面消息的基本组件,然后请求将页面消息的扩展组件重新广播为基础组件,从而恢复整个页面消息。
    • 9. 发明申请
    • Wireless communication coding and transmission systems and methods
    • 无线通信编码和传输系统及方法
    • US20070097980A1
    • 2007-05-03
    • 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。