公开(公告)号：US08964703B2

公开(公告)日：2015-02-24

申请号：US12443978

申请日：2007-11-01

申请人： Wanshi Chen ,  Xiaoxia Zhang ,  Durga Prasad Malladi ,  Xiliang Luo

发明人： Wanshi Chen ,  Xiaoxia Zhang ,  Durga Prasad Malladi ,  Xiliang Luo

IPC分类号： H04W4/00 ,  H04B7/216 ,  H04W52/34 ,  H04L5/00 ,  H04W52/24 ,  H04W72/04

CPC分类号： H04W72/0486 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0092 ,  H04W52/248 ,  H04W52/34

摘要： A system and method for facilitating resource management in OFDM systems is provided. The system permits different and flexible resource cell metric operations levels (e.g. uplink load management, admission control, congestion control, signal handoff control) for different sub-bands. For the uplink load management, there are multiple distinct load operation points (e.g. IoT, RoT) per sub-band group instead of the same operation level across the entire available band. The sub-band groups encompass the entire band. The facilitation system also comprises a variety of transmitting protocols, command increment variable stepsize methods and robust command response methods. The system thus provides more flexible reverse link resource management and more efficient utilization of the bandwidth.

公开(公告)号：US08345620B2

公开(公告)日：2013-01-01

申请号：US12025174

申请日：2008-02-04

申请人： Wanshi Chen ,  Durga Prasad Malladi

发明人： Wanshi Chen ,  Durga Prasad Malladi

IPC分类号： H04W4/00

CPC分类号： H04L5/023 ,  H04B1/7143 ,  H04B7/12 ,  H04B7/2615 ,  H04B2001/7154 ,  H04L1/0071 ,  H04L1/1614 ,  H04L1/1812 ,  H04W52/38 ,  H04W52/42

摘要： A method and apparatus for a wireless communication system, for frequency hopping using frequency fraction reuse scheme. The frequency hopping pattern is generated by dividing a portion of frequency into plurality of sub-bands, dividing a portion of time into plurality of sectors, each sector comprising the divided sub-bands, designating one of the divided sub-band within one of the sectors as the restricted sub-band, and allocating a location the designated sub-band as a restricted sub-band.

摘要翻译： 一种用于无线通信系统的方法和装置，用于使用频率分数重用方案进行跳频。 通过将频率的一部分划分成多个子带，将一部分时间划分为多个扇区，每个扇区包括被划分的子带，从而指定一个分割子带，从而生成跳频图案 扇区作为受限子带，并且将指定子带的位置分配为受限子带。

公开(公告)号：US09125072B2

公开(公告)日：2015-09-01

申请号：US13085151

申请日：2011-04-12

申请人： Tingfang Ji ,  Osok Song ,  Aleksandar Damnjanovic ,  Peter Gaal ,  Tao Luo ,  Durga Prasad Malladi

发明人： Tingfang Ji ,  Osok Song ,  Aleksandar Damnjanovic ,  Peter Gaal ,  Tao Luo ,  Durga Prasad Malladi

IPC分类号： H04W72/00 ,  H04W24/02 ,  H04L1/00 ,  H04W16/14 ,  H04W72/08 ,  H04J11/00 ,  H04W16/02 ,  H04W28/04 ,  H04W84/04 ,  H04W24/10 ,  H04W36/00

CPC分类号： H04W24/02 ,  H04J11/0023 ,  H04J11/005 ,  H04L1/0027 ,  H04W16/02 ,  H04W16/14 ,  H04W24/10 ,  H04W28/04 ,  H04W36/0088 ,  H04W72/085 ,  H04W84/045 ,  H04W84/047

摘要： Methods and apparatus for performing radio resource management (RRM) measurements in a heterogeneous network (HetNet) are provided in an effort to prevent failure of RRM measurement procedures in a dominant interference scenario. Several alternatives are provided for determining particular resources (e.g., subframes) to use for performing the RRM measurements, wherein the particular resources are based on cooperative resource partitioning between cells of the HetNet, wherein the cells may be of different types (e.g., macro, pico, or femto cells). These alternatives include, for example: (1) intra-frequency or intra-RAT (radio access technology) alternatives, which may involve transmitting resource partitioning information (RPI) in or deriving non-serving cell RPI based on the serving cell's RPI, as well as (2) inter-frequency or inter-RAT alternatives, where the RRM measurements may be performed during a measurement gap.

摘要翻译： 提供用于在异构网络（HetNet）中执行无线电资源管理（RRM）测量的方法和装置，以便在主导干扰情况下防止RRM测量过程的故障。 提供了几种用于确定用于执行RRM测量的特定资源（例如，子帧）的替代方案，其中特定资源基于HetNet的小区之间的协作资源划分，其中小区可以是不同类型（例如，宏， 微微或毫微微小区）。 这些替代方案包括例如：（1）频率内或RAT内（无线电接入技术）替代方案，其可以涉及基于服务小区的RPI在其中发送资源划分信息（RPI）或导出非服务小区RPI，作为 以及（2）频率间或RAT间的替代方案，其中可以在测量间隙期间执行RRM测量。

公开(公告)号：US09119132B2

公开(公告)日：2015-08-25

申请号：US12248303

申请日：2008-10-09

申请人： Tao Luo ,  Durga Prasad Malladi ,  Juan Montojo ,  Peter Gaal ,  Sandip Sarkar

发明人： Tao Luo ,  Durga Prasad Malladi ,  Juan Montojo ,  Peter Gaal ,  Sandip Sarkar

IPC分类号： H04J3/06 ,  H04W48/12 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04W48/12 ,  H04J11/0069 ,  H04L27/2602 ,  H04W56/001

摘要： Systems and methodologies are described that facilitate efficiently indicating parameter(s) associated with a base station utilizing synchronization signals in a wireless communication environment. For instance, relative locations of a PSC and a SSC in a radio frame can be a function of a parameter. Further, a PSC sequence utilized to generate PSCs can be selected based upon a parameter. Moreover, inclusion or exclusion of PSCs from a radio frame can be a function of a parameter. Additionally or alternatively, pseudo random sequence mappings (e.g., to cell IDs, tone locations) can be a function of a parameter. Example parameters can be whether the base station is part of a TDD or a FDD system, whether the radio frame employs FS1 or FS2, whether the base station is associated with a macro or a femto cell, or whether the base station is associated with a unicast or a multicast system.

摘要翻译： 描述了在无线通信环境中利用同步信号有助于有效地指示与基站相关联的参数的系统和方法。 例如，无线电帧中的PSC和SSC的相对位置可以是参数的函数。 此外，可以基于参数来选择用于生成PSC的PSC序列。 此外，从无线电帧中包含或排除PSC可以是参数的函数。 另外或替代地，伪随机序列映射（例如，到小区ID，音调位置）可以是参数的函数。 示例性参数可以是基站是TDD或FDD系统的一部分，无线电帧是使用FS1还是FS2，基站是与宏还是毫微微小区相关联，还是基站是否与 单播或多播系统。

公开(公告)号：US08861452B2

公开(公告)日：2014-10-14

申请号：US13210341

申请日：2011-08-15

申请人： Alan Barbieri ,  Durga Prasad Malladi ,  Yongbin Wei ,  Naga Bhushan ,  Peter Gaal

发明人： Alan Barbieri ,  Durga Prasad Malladi ,  Yongbin Wei ,  Naga Bhushan ,  Peter Gaal

IPC分类号： H04W4/00 ,  H04W48/10 ,  H04W74/08 ,  H04W88/06 ,  H04W72/04 ,  H04W16/14

CPC分类号： H04W48/10 ,  H04W16/14 ,  H04W72/0406 ,  H04W74/0833 ,  H04W88/06

摘要： Techniques are provided for control signaling and channel selection in cognitive Long Term Evolution (LTE). In one example, there is provided a method, operable by a mobile entity, that involves receiving, on a licensed channel, broadcasted channel usage information regarding at least one unlicensed channel used by one or more network nodes. The method further involves: performing a cell search procedure based at least in part on the channel usage information to select a given network node among the one or more network nodes; determining at least one random access parameter to be used in establishing wireless communication with the given network node, the at least one random access parameter being associated with a characteristic of the user device and determining a preferred downlink channel.

摘要翻译： 提供技术用于认知长期演进（LTE）中的控制信令和信道选择。 在一个示例中，提供了一种由移动实体操作的方法，其涉及在许可频道上接收关于由一个或多个网络节点使用的至少一个非许可信道的广播信道使用信息。 所述方法还包括：至少部分地基于所述信道使用信息来执行小区搜索过程，以选择所述一个或多个网络节点中的给定网络节点; 确定要用于建立与所述给定网络节点的无线通信中的至少一个随机接入参数，所述至少一个随机接入参数与所述用户设备的特性相关联并且确定优选下行链路信道。

公开(公告)号：US20120088516A1

公开(公告)日：2012-04-12

申请号：US13085151

申请日：2011-04-12

申请人： Tingfang Ji ,  Osok Song ,  Aleksandar Damnjanovic ,  Peter Gaal ,  Tao Luo ,  Durga Prasad Malladi

发明人： Tingfang Ji ,  Osok Song ,  Aleksandar Damnjanovic ,  Peter Gaal ,  Tao Luo ,  Durga Prasad Malladi

IPC分类号： H04W72/04

CPC分类号： H04W24/02 ,  H04J11/0023 ,  H04J11/005 ,  H04L1/0027 ,  H04W16/02 ,  H04W16/14 ,  H04W24/10 ,  H04W28/04 ,  H04W36/0088 ,  H04W72/085 ,  H04W84/045 ,  H04W84/047

摘要： Methods and apparatus for performing radio resource management (RRM) measurements in a heterogeneous network (HetNet) are provided in an effort to prevent failure of RRM measurement procedures in a dominant interference scenario. Several alternatives are provided for determining particular resources (e.g., subframes) to use for performing the RRM measurements, wherein the particular resources are based on cooperative resource partitioning between cells of the HetNet, wherein the cells may be of different types (e.g., macro, pico, or femto cells). These alternatives include, for example: (1) intra-frequency or intra-RAT (radio access technology) alternatives, which may involve transmitting resource partitioning information (RPI) in or deriving non-serving cell RPI based on the serving cell's RPI, as well as (2) inter-frequency or inter-RAT alternatives, where the RRM measurements may be performed during a measurement gap.

摘要翻译： 提供用于在异构网络（HetNet）中执行无线电资源管理（RRM）测量的方法和装置，以便在主导干扰情况下防止RRM测量过程的故障。 提供了几种用于确定用于执行RRM测量的特定资源（例如，子帧）的替代方案，其中特定资源基于HetNet的小区之间的协作资源划分，其中小区可以是不同类型（例如，宏， 微微或毫微微小区）。 这些替代方案包括例如：（1）频率内或RAT内（无线电接入技术）替代方案，其可以涉及基于服务小区的RPI在其中发送资源划分信息（RPI）或导出非服务小区RPI，作为 以及（2）频率间或RAT间的替代方案，其中可以在测量间隙期间执行RRM测量。

公开(公告)号：US20110176498A1

公开(公告)日：2011-07-21

申请号：US12841050

申请日：2010-07-21

申请人： Juan Montojo ,  Peter Gaal ,  Durga Prasad Malladi

发明人： Juan Montojo ,  Peter Gaal ,  Durga Prasad Malladi

IPC分类号： H04W72/04

CPC分类号： H04W72/1242 ,  H04L5/0044 ,  H04L5/0053 ,  H04W52/146 ,  H04W52/16 ,  H04W52/281 ,  H04W52/325 ,  H04W52/367 ,  H04W72/02 ,  H04W72/048 ,  H04W72/1284

摘要： Providing for mixed single carrier and multi-carrier uplink transmission in a wireless communication environment is described herein. By way of example, a network is provided that can identify uplink capabilities or restrictions of respective devices of a mixed population of mobile devices, and schedule single carrier or multi-carrier transmissions accordingly. In some aspects, different subsets of multi-carrier transmission can be given priority over other subsets. Based on the priority, the network can schedule/modify relative transmit powers for respective subsets, accommodate power constraints of higher level networking protocols, and optionally give priority to one or more of the distinct transmissions. In addition, priority can be given to respective subsets of the multi-carrier transmission, to ensure high quality or reliability for important transmissions. Thus, provided is an integrated network that accommodates a powerful mix of single carrier and multi-carrier services for a mixed population of mobile devices.

摘要翻译： 本文描述了在无线通信环境中提供混合单载波和多载波上行链路传输。 作为示例，提供了可以识别移动设备的混合群体的相应设备的上行链路能力或限制的网络，并且相应地调度单载波或多载波传输。 在一些方面，可以将不同的多载波传输子集优先于其他子集。 基于优先级，网络可以调度/修改相应子集的相对发射功率，适应较高级联网协议的功率约束，并且可选地优先考虑一个或多个不同传输。 此外，可以优先考虑多载波传输的各个子集，以确保重要传输的高质量或可靠性。 因此，提供了一种综合网络，其适应于移动设备的混合群体的单载波和多载波服务的强大组合。

公开(公告)号：US20090181692A1

公开(公告)日：2009-07-16

申请号：US12352746

申请日：2009-01-13

申请人： Peter Gaal ,  Durga Prasad Malladi ,  Xiaoxia Zhang

发明人： Peter Gaal ,  Durga Prasad Malladi ,  Xiaoxia Zhang

IPC分类号： H04W72/08 ,  H04W72/00 ,  H04W72/04

CPC分类号： H04J13/16 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0053 ,  H04L27/2613 ,  H04W72/082

摘要： Different sequence resources can be allocated to a mobile device where the mobile device can exclusively uses the sequence resource with regard to a base station during a communication session. However, if another mobile device using another base station is assigned a matching sequence resource, then there can be interference if the mobile devices are relatively close enough together. Therefore, randomization of the sequence resources can take place—moreover, a cyclic shift result can be employed in sequence resource allocation to attempt to minimize interference.

摘要翻译： 可以向移动设备分配不同的序列资源，其中移动设备可以在通信会话期间专门地使用关于基站的序列资源。 然而，如果使用另一个基站的另一个移动设备被分配了匹配的序列资源，则如果移动设备在一起相对足够接近，则可能存在干扰。 因此，可以发生序列资源的随机化，此外，可以在序列资源分配中采用循环移位结果来尝试最小化干扰。

公开(公告)号：US08374072B2

公开(公告)日：2013-02-12

申请号：US12755998

申请日：2010-04-07

申请人： Peter Gaal ,  Robert J. Fuchs ,  Yongbin Wei ,  Ke Liu ,  Hanfang Pan ,  Durga Prasad Malladi ,  Daniel T. Macek

发明人： Peter Gaal ,  Robert J. Fuchs ,  Yongbin Wei ,  Ke Liu ,  Hanfang Pan ,  Durga Prasad Malladi ,  Daniel T. Macek

IPC分类号： H04J11/00 ,  H04W4/00

CPC分类号： H04J13/0059 ,  H04J13/14

摘要： Efficient apparatus and method for Zadoff-Chu (“Chu”) sequence generation avoids additional processing and hardware complexity of conventional quadratic generating formula followed by Discrete Fourier Transform (DFT) with a reference signal generator that produces both a Zadoff-Chu sequence and its DFT. In the wireless communication system (e.g., Long Term Evolution (LTE) system), Chu sequences are extensively used, especially in the uplink (UL). Because of the single carrier operating mode, transmitting a Chu sequence in principle involves a succession of generating that sequence, performing a DFT operation and then an IFFT operation. Assuming that the sequence length is N, the initial sequence generation requires 2N multiplications and the DFT requires more than N log 2(N) multiplications. Given the frequent processing of Chu sequences, this would represent a complexity burden. The invention makes it possible to perform the sequence generation and DFT steps without any multiplication operation, except for possibly calculating certain initial parameters.

摘要翻译： 用于Zadoff-Chu（Chu）序列生成的高效装置和方法避免了常规二次生成公式的附加处理和硬件复杂性，随后是具有产生Zadoff-Chu序列及其DFT的参考信号发生器的离散傅里叶变换（DFT）。 在无线通信系统（例如，长期演进（Long Term Evolution，LTE）系统）中，尤其在上行链路（UL）中广泛使用了Chu序列。 由于单载波操作模式，原则上发送Chu序列涉及一系列生成该序列，执行DFT操作，然后进行IFFT操作。 假设序列长度为N，则初始序列生成需要2N次乘法，并且DFT需要多于N个log 2（N）乘法。 鉴于Chu序列的频繁处理，这将代表一个复杂的负担。 除了可能计算某些初始参数之外，本发明使得可以执行没有任何乘法运算的序列生成和DFT步骤。

公开(公告)号：US20100202414A1

公开(公告)日：2010-08-12

申请号：US12768492

申请日：2010-04-27

申请人： Durga Prasad Malladi ,  Peter Gaal ,  Yongbin Wei

发明人： Durga Prasad Malladi ,  Peter Gaal ,  Yongbin Wei

IPC分类号： H04W72/04 ,  G06F11/08 ,  H03M13/00

CPC分类号： H04L1/0029 ,  H04L1/0003 ,  H04L1/0025

摘要： In a wireless network (100) with HSDPA-enabled user equipment devices (130), the base transceiver station (120) transmits to each HSDPA-enabled UE information regarding allocation of HSDPA codes and associated modulation techniques for other HSDPA-enabled UEs. Using this additional control information, each UE configures decision feedback filter of its equalizer to reduce inter-user interference. The additional control information may be transmitted in a packet (300) that includes a CRC portion (310) with the packet's CRC masked by a common ID, which is known to the HSDPA-enabled UEs. To reduce the number of bits needed to transmit the additional control information, the HSDPA codes used with a particular modulation technique are allocated consecutively. For each modulation technique, only the beginning code and the total number of codes need be known to the UEs. The number of codes used with each modulation technique may be allowed to change once in several TTIs.

摘要翻译： 在具有支持HSDPA的用户设备（130）的无线网络（100）中，基站收发器（120）向每个支持HSDPA的UE发送关于其他支持HSDPA的UE的HSDPA代码分配和相关调制技术的信息。 使用该附加控制信息，每个UE配置其均衡器的判决反馈滤波器以减少用户间干扰。 附加控制信息可以在包括CRC部分（310）的分组（300）中发送，其中分组的CRC被公共ID掩蔽，这是启用HSDPA的UE已知的。 为了减少发送附加控制信息所需的位数，连续分配与特定调制技术一起使用的HSDPA码。 对于每个调制技术，只有起始码和代码总数需要为UE所知。 可以允许每个调制技术使用的代码数量在几个TTI中改变一次。