Spreader architecture for direct sequence spread spectrum communications
    1.
    发明授权
    Spreader architecture for direct sequence spread spectrum communications 有权
    用于直接序列扩频通信的扩展器架构

    公开(公告)号:US06366600B1

    公开(公告)日:2002-04-02

    申请号:US09211989

    申请日:1998-12-14

    IPC分类号: H04B169

    CPC分类号: H04L27/0008 H04B1/707

    摘要: A spreader architecture for direct sequence spread spectrum communications is disclosed. This single architecture can perform OOK, BPSK, or QPSK spreading modulation of a carrier. In the QPSK and BPSK modes, input data is spread by pseudonoise signals to produce digital representations of phase-modulated baseband in-phase and quadrature components. In the OOK mode, the spectrum of the baseband components is selectively spread according to the input data. In an exemplary application, the various modulation modes are used to encode the control and traffic channels of a code-division multiple-access cellular telephone system.

    摘要翻译: 公开了一种用于直接序列扩频通信的扩展器架构。 该单一架构可以执行载波的OOK,BPSK或QPSK扩展调制。 在QPSK和BPSK模式中,输入数据通过伪噪声信号进行扩展,以产生相位调制的基带同相和正交分量的数字表示。 在OOK模式中,根据输入数据选择性地扩展基带分量的频谱。 在示例性应用中,各种调制模式用于对码分多址蜂窝电话系统的控制和业务信道进行编码。

    Coherent demodulator for use in the presence of phase discontinuities
    2.
    发明授权
    Coherent demodulator for use in the presence of phase discontinuities 有权
    用于存在相位不连续性的相干解调器

    公开(公告)号:US06594303B1

    公开(公告)日:2003-07-15

    申请号:US09228470

    申请日:1999-01-11

    IPC分类号: H04B169

    CPC分类号: H04B1/707 H04B2201/70701

    摘要: Techniques for coherent demodulation in the presence of phase discontinuities is described. In the exemplary embodiment, times when phase discontinuities occur are known apriori by a receiver in which demodulation is being performed. In an alternate embodiment, the discontinuity location is signaled to the receiver in advance by the transmitter which generates the signals being demodulated. A pilot signal is prepared for optimal coherent demodulation by the use of two filters: one capable of withstanding the effects of phase discontinuity; a second providing superior filtering performance than the first so long as phase discontinuities are not present. Both filters are simultaneously operated. However, the superior performing filter is selected for use in demodulation whenever possible.

    摘要翻译: 描述了存在相位不连续性的相干解调技术。 在示例性实施例中,发生相位不连续性的时间是正在执行解调的接收机所知道的。 在替代实施例中,不连续位置由产生被解调的信号的发射机预先发送给接收机。 通过使用两个滤波器来准备导频信号以实现最佳相干解调:一个能够承受相位不连续性的影响; 只要不存在相位不连续性,第二个提供比第一个优越的滤波性能。 两个过滤器同时运行。 然而,优选执行滤波器被选择用于解调,只要可能。

    Radio link protocols for enhancing efficiency of multi-link communication systems
    4.
    发明授权
    Radio link protocols for enhancing efficiency of multi-link communication systems 有权
    用于提高多链路通信系统效率的无线链路协议

    公开(公告)号:US08755407B2

    公开(公告)日:2014-06-17

    申请号:US11355700

    申请日:2006-02-15

    IPC分类号: H04J3/24

    摘要: Embodiments disclosed herein relate to a new set of radio link protocols (RLPs) configured to provide for efficient data transmission in a multi-link communication system. In an embodiment, an upper-layer packet is segmented into link-layer packets to be transmitted over a plurality of communication links, each including a first sequence number in accordance with a predetermined order. A second sequence number is further added to each link-layer packet to be transmitted for the first time. The second sequence number is configured to be in a sequence space associated with a particular communication link, and may be used for detection of missing packets.

    摘要翻译: 本文公开的实施例涉及被配置为在多链路通信系统中提供有效的数据传输的新的无线电链路协议集合(RLP)。 在一个实施例中,上层分组被分割成要在多个通信链路上发送的链路层分组,每个通信链路包括根据预定顺序的第一序列号。 第二序列号进一步添加到要首次发送的每个链路层分组。 第二序列号被配置为与特定通信链路相关联的序列空间中,并且可以用于检测丢失的分组。

    Distributed infrastructure for wireless data communications
    5.
    发明授权
    Distributed infrastructure for wireless data communications 有权
    用于无线数据通信的分布式基础设施

    公开(公告)号:US08274948B2

    公开(公告)日:2012-09-25

    申请号:US12778005

    申请日:2010-05-11

    IPC分类号: H04W4/00

    摘要: A mobile user terminal 402 accesses a packet data network 450 through one or more of several network access points 404-412. One or more control points 432-440 determines which network access point or points the user terminal is to access. Control may be retained in the current control point, or transferred to another control point, whenever it is convenient. There are preferably several routers, each having an associated home agent 418-420 which determines which foreign agents need to be accessed on behalf of each user terminal. There are several foreign agents 422-430, which forward packets received from a user terminal's home agent to the control point currently controlling communications with the user terminal.

    摘要翻译: 移动用户终端402通过多个网络接入点404-412中的一个或多个来访问分组数据网络450。 一个或多个控制点432-440确定用户终端要访问的哪个网络接入点或点。 控制可以保留在当前控制点,或者在方便时转移到另一个控制点。 优选地,几个路由器,每个具有相关联的归属代理418-420,其确定代表每个用户终端需要访问哪些外部代理。 存在若干外来代理422-430,其将从用户终端的归属代理接收的分组转发到当前控制与用户终端的通信的控制点。

    Efficient over the air address methods and apparatus
    6.
    发明授权
    Efficient over the air address methods and apparatus 有权
    高效的空中地址方法和设备

    公开(公告)号:US08259702B2

    公开(公告)日:2012-09-04

    申请号:US11759910

    申请日:2007-06-07

    IPC分类号: H04L12/28

    摘要: Addressing methods and apparatus which use airlink resources in an efficient manner are described. In order to use airlink resources efficiently, a variety of address types are supported. The number of bits in the address may vary depending on the type. In order to support a variety of different address types, of different lengths, in one embodiment, an address used for communications over an airlink is constructed by including in the address an address type field used to communicate an address type indicator and, optionally, an address field used to communicate an address value. The address field is variable in length and may be null, requiring the communication of no bits in this field, for certain types of addresses. Four types of addresses which may be supported include: i) an Access Terminal assisted address, ii) a Network assisted address, 3) a Pilot PN based address; and 4) a reserved address.

    摘要翻译: 描述了以有效的方式使用空中链路资源的寻址方法和装置。 为了有效地使用空中链路资源,支持各种地址类型。 地址中的位数可能会根据类型而有所不同。 为了支持不同长度的不同地址类型,在一个实施例中,通过在地址中包括用于通信地址类型指示符的地址类型字段,并且可选地, 地址字段用于传达地址值。 地址字段的长度是可变的,并且可以是空的,对于某些类型的地址,需要在该字段中的任何位的通信。 可以支持的四种类型的地址包括:i)接入终端辅助地址,ii)网络辅助地址,3)基于PN的导频地址; 和4)保留地址。

    Method and apparatus for the discovery of radio access network elements and exchange of capability and data attributes between those elements
    7.
    发明授权
    Method and apparatus for the discovery of radio access network elements and exchange of capability and data attributes between those elements 有权
    用于发现无线接入网元的方法和装置,以及这些元件之间的能力和数据属性的交换

    公开(公告)号:US08204495B2

    公开(公告)日:2012-06-19

    申请号:US12615362

    申请日:2009-11-10

    IPC分类号: H04W4/00

    CPC分类号: H04W8/005

    摘要: The present apparatus comprises a radio access network element having at least one processor, and at least one memory operably connected to the at least one processor, whereby the radio access network element is adapted to execute instructions stored in the memory comprising discovery of at least one other element in a radio access network. The radio access element further comprises instructions for removal or addition of network elements, instructions for determining a paging area and instructions for forwarding messages from a mobile to a controller in another domain.

    摘要翻译: 本装置包括具有至少一个处理器的无线电接入网络元件和可操作地连接到至少一个处理器的至少一个存储器,由此无线电接入网络元件适于执行存储在存储器中的指令,包括发现至少一个 无线电接入网络中的其他元素。 无线电接入元件还包括用于去除或添加网络元件的指令,用于确定寻呼区域的指令和用于将消息从移动台转发到另一个域中的控制器的指令。

    Method and apparatus for using short addresses in a communication system
    9.
    发明授权
    Method and apparatus for using short addresses in a communication system 有权
    在通信系统中使用短地址的方法和装置

    公开(公告)号:US08098662B2

    公开(公告)日:2012-01-17

    申请号:US11759858

    申请日:2007-06-07

    IPC分类号: H04L12/28 H04L12/56

    摘要: Methods and apparatus for communicating between an access terminal (AT) and remote device via an access point (AP) are described. For communications over the air link, between an AP and an AT, a short address corresponding to the remote device is used for routing packets to/from the remote device. This conserves air link resources. However, for communicating between the AP and the remote device a longer address, e.g., a full IP address corresponding to the remote device, is used. The AT converts between the long and short addresses as information, e.g., packets, is communicated between the remote device and the AT. The long address may be, for example, an IP address corresponding to the remote device used to route packets through a Layer 2 tunnel between the remote device and the AP. In some embodiments the remote device is a remote access point.

    摘要翻译: 描述了通过接入点(AP)在接入终端(AT)和远程设备之间进行通信的方法和装置。 对于通过空中链路的通信,在AP和AT之间,与远程设备相对应的短地址用于将数据包路由到/从远程设备进行路由。 这节省了空中链路资源。 然而,为了在AP和远程设备之间进行通信,使用较长的地址,例如对应于远程设备的完整IP地址。 在远程设备和AT之间传送信息(例如,分组)时,AT在长地址和短地址之间进行转换。 长地址可以是例如与用于通过远程设备和AP之间的二层隧道路由分组的远程设备相对应的IP地址。 在一些实施例中,远程设备是远程接入点。