Frame structures for a wireless communication system with multiple radio technologies
    51.
    发明授权
    Frame structures for a wireless communication system with multiple radio technologies 有权
    具有多种无线电技术的无线通信系统的帧结构

    公开(公告)号:US07920884B2

    公开(公告)日:2011-04-05

    申请号:US11144208

    申请日:2005-06-02

    IPC分类号: H04Q7/20 H04Q7/00

    摘要: Frame structures and transmission techniques for a wireless communication system are described. In one frame structure, a super-frame includes multiple outer-frames, and each outer-frame includes multiple frames, and each frame includes multiple time slots. The time slots in each super-frame are allocated for downlink and uplink and for different radio technologies (e.g., W-CDMA and OFDM) based on loading. Each physical channel is allocated at least one time slot in at least one frame of each outer-frame in the super-frame. An OFDM waveform is generated for each downlink OFDM slot and multiplexed onto the slot. A W-CDMA waveform is generated for each downlink W-CDMA slot and multiplexed onto the slot. A modulated signal is generated for the multiplexed W-CDMA and OFDM waveforms and transmitted on the downlink. Each physical channel is transmitted in bursts. The slot allocation and coding and modulation for each physical channel can change for each super-frame.

    摘要翻译: 描述了用于无线通信系统的帧结构和传输技术。 在一帧结构中,超帧包括多个外帧,并且每个外帧包括多个帧,并且每个帧包括多个时隙。 基于加载,为每个超帧中的时隙分配给下行链路和上行链路以及不同的无线电技术(例如,W-CDMA和OFDM)。 每个物理信道在超帧中的每个外帧的至少一个帧中分配至少一个时隙。 为每个下行OFDM时隙生成OFDM波形并复用到时隙上。 为每个下行链路W-CDMA时隙产生W-CDMA波形并复用到该时隙上。 为多路复用的W-CDMA和OFDM波形生成调制信号并在下行链路上发送。 每个物理信道以突发方式传输。 每个物理信道的时隙分配和编码和调制可以针对每个超帧而改变。

    TIME OF ARRIVAL (TOA) ESTIMATION FOR POSITIONING IN A WIRELESS COMMUNICATION NETWORK
    52.
    发明申请
    TIME OF ARRIVAL (TOA) ESTIMATION FOR POSITIONING IN A WIRELESS COMMUNICATION NETWORK 有权
    到达时间(TOA)无线通信网络中的定位估计

    公开(公告)号:US20100279707A1

    公开(公告)日:2010-11-04

    申请号:US12606037

    申请日:2009-10-26

    IPC分类号: H04W24/00 H04B17/00

    摘要: Techniques for determining time of arrivals (TOAs) of signals in a wireless communication network are described. Each cell may transmit (i) synchronization signals on a set of contiguous subcarriers in the center portion of the system bandwidth and (ii) reference signals on different sets of non-contiguous subcarriers distributed across the system bandwidth. A UE may determine TOA for a cell based on multiple signals transmitted on different sets of subcarriers. The UE may perform correlation for a first signal (e.g., a synchronization signal) from the cell to obtain first correlation results for different time offsets. The UE may perform correlation for a second signal (e.g., a reference signal) from the cell to obtain second correlation results for different time offsets. The UE may combine the first and second correlation results and may determine the TOA for the cell based on the combined correlation results.

    摘要翻译: 描述了用于确定无线通信网络中的信号的到达时间(TOAs)的技术。 每个小区可以在系统带宽的中心部分中的一组连续子载波上发送(i)同步信号,以及(ii)分布在系统带宽上的不连续子载波的不同集合上的参考信号。 UE可以基于在不同的子载波集合上发送的多个信号来确定小区的TOA。 UE可以对来自小区的第一信号(例如,同步信号)执行相关性,以获得用于不同时间偏移的第一相关结果。 UE可以对来自小区的第二信号(例如,参考信号)执行相关性,以获得用于不同时间偏移的第二相关结果。 UE可以组合第一和第二相关结果,并且可以基于组合的相关结果来确定小区的TOA。

    HIERARCHICAL CODING WITH MULTIPLE ANTENNAS IN A WIRELESS COMMUNICATION SYSTEM
    53.
    发明申请
    HIERARCHICAL CODING WITH MULTIPLE ANTENNAS IN A WIRELESS COMMUNICATION SYSTEM 有权
    在无线通信系统中具有多个天线的分层编码

    公开(公告)号:US20100220708A1

    公开(公告)日:2010-09-02

    申请号:US12777518

    申请日:2010-05-11

    IPC分类号: H04J3/00 H04J1/00

    摘要: Techniques are provided for performing hierarchical coding in a multi-antenna communication system (e.g., a SIMO, MISO, or MIMO system). At a transmitter, a base stream and an enhancement stream are coded and modulated separately to obtain first and second data symbol streams, respectively. The first data symbol stream is processed in accordance with a first spatial processing scheme (e.g., a transmit diversity or a spatial multiplexing scheme) to obtain a first set of symbol substreams. The second data symbol stream is processed in accordance with a second spatial processing scheme (e.g., transmit diversity or spatial multiplexing) to obtain a second set of symbol substreams. The first set of symbol substreams is combined (e.g., using time division multiplexing or superposition) with the second set of symbol substreams to obtain multiple transmit symbol streams for transmission from multiple transmit antennas. A receiver performs complementary processing to recover the base stream and enhancement stream.

    摘要翻译: 提供了用于在多天线通信系统(例如,SIMO,MISO或MIMO系统)中执行分级编码的技术。 在发射机处,分别对基本流和增强流进行编码和调制,以分别获得第一和第二数据符号流。 根据第一空间处理方案(例如,发射分集或空间复用方案)来处理第一数据符号流,以获得第一组符号子流。 根据第二空间处理方案(例如,发射分集或空间复用)处理第二数据符号流,以获得第二组符号子流。 第一组符号子流组合(例如,使用时分复用或叠加)与第二组符号子流,以获得用于从多个发射天线发射的多个发射符号流。 接收机执行补充处理以恢复基流和增强流。

    INTERFERENCE MANAGEMENT WITH REDUCE INTERFERENCE REQUESTS AND INTERFERENCE INDICATORS
    54.
    发明申请
    INTERFERENCE MANAGEMENT WITH REDUCE INTERFERENCE REQUESTS AND INTERFERENCE INDICATORS 失效
    干扰管理减少了干扰要求和干扰指标

    公开(公告)号:US20100099449A1

    公开(公告)日:2010-04-22

    申请号:US12425302

    申请日:2009-04-16

    IPC分类号: H04B15/00 H04B7/00

    CPC分类号: H04W52/243 H04W72/08

    摘要: Techniques for managing interference in a wireless network are described. In an aspect, reduce interference requests and interference indicators may be used for interference management to enable operation in scenarios with dominant interferers. In one design, a terminal may receive a reduce interference request from a first base station requesting lower interference on specified time-frequency resources. The terminal may also receive an interference indicator conveying the interference observed by a second base station. The terminal may determine its transmit power based on the reduce interference request and the interference indicator. For example, the terminal may determine an initial transmit power based on the reduce interference request (or the interference indicator) and may adjust the initial transmit power based on the interference indicator (or the reduce interference request) to obtain its transmit power. The terminal may transmit data to a serving base station at the determined transmit power.

    摘要翻译: 描述了用于管理无线网络中的干扰的技术。 在一个方面,减少干扰请求和干扰指示符可以用于干扰管理,以使得能够在具有主要干扰源的情况下进行操作。 在一种设计中,终端可以从指定的时间 - 频率资源上请求较低干扰的第一基站接收减少干扰请求。 终端还可以接收传达由第二基站观测到的干扰的干扰指示符。 终端可以基于减少干扰请求和干扰指示符来确定其发射功率。 例如,终端可以基于减少干扰请求(或干扰指示符)来确定初始发射功率,并且可以基于干扰指示符(或减少干扰请求)来调整初始发射功率以获得其发射功率。 终端可以以所确定的发射功率向服务基站发送数据。

    NULL PILOTS FOR INTERFERENCE ESTIMATION IN A WIRELESS COMMUNICATION NETWORK
    55.
    发明申请
    NULL PILOTS FOR INTERFERENCE ESTIMATION IN A WIRELESS COMMUNICATION NETWORK 有权
    用于无线通信网络干扰估计的空值

    公开(公告)号:US20100099428A1

    公开(公告)日:2010-04-22

    申请号:US12425243

    申请日:2009-04-16

    IPC分类号: H04W72/00 H04B15/00

    摘要: Techniques for transmitting null pilots to support interference estimation in a wireless network are described. A null pilot is non-transmission on designated time-frequency resources by a cell or a cluster of cells supporting cooperative transmission to a UE. The received power of the null pilot from the cell or cluster of cells may be indicative of interference from other cells. In one design, a cell in the cluster may determine resources for sending a null pilot by the cell. The cell may transmit the null pilot (i.e., send no transmissions) on the resources to allow UEs to estimate out-of-cluster interference. Some or all cells in the cluster may transmit null pilots on the same resources. The cell may receive interference and channel information from the UE and may send data transmission to the UE based on the interference and/or channel information. Remaining cells in the cluster may reduce interference to the UE.

    摘要翻译: 描述了用于发送空导频以支持无线网络中的干扰估计的技术。 空导频是通过支持向UE的协作传输的小区或小区集群在指定的时间 - 频率资源上进行非传输。 来自小区或小区簇的空导频的接收功率可以指示来自其他小区的干扰。 在一种设计中,集群中的小区可以确定用于由小区发送空导频的资源。 小区可以在资源上发送空导频(即,不发送传输),以允许UE估计簇外干扰。 集群中的一些或所有单元可以在相同的资源上传输空导频。 小区可以从UE接收干扰和信道信息,并且可以基于干扰和/或信道信息向UE发送数据传输。 群集中的剩余小区可以减少对UE的干扰。

    Method and System for LLR Buffer Reduction in a Wireless Communication Modem
    56.
    发明申请
    Method and System for LLR Buffer Reduction in a Wireless Communication Modem 有权
    无线通信调制解调器中LLR缓冲区减少的方法和系统

    公开(公告)号:US20100067598A1

    公开(公告)日:2010-03-18

    申请号:US12405649

    申请日:2009-03-17

    IPC分类号: H04L5/12 H04L27/06

    摘要: A system involves a transmitting device (for example, a first wireless communication device) and a receiving device (for example, a second wireless communication device). In the receiving device, LLR (Log-Likelihood Ratio) values are stored into an LLR buffer. LLR bit width is adjusted as a function of packet size of an incoming transmission to reduce the LLR buffer size required and/or to prevent LLR buffer capacity from being exceeded. The receiver may use a higher performance demodulator in order to maintain performance despite smaller LLR bit width. In the transmitting device, encoder code rate is adjusted as a function of receiver LLR buffer capacity and packet size of the outgoing transmission such that receiver LLR buffer capacity is not exceeded. Any combination of receiver LLR bit width adjustment, demodulator selection, and encoder code rate adjustment can be practiced to reduce LLR buffer size required while maintaining performance.

    摘要翻译: 系统涉及发送设备(例如,第一无线通信设备)和接收设备(例如,第二无线通信设备)。 在接收设备中,将LLR(对数似然比)值存储到LLR缓冲器中。 根据输入传输的分组大小调整LLR比特宽度,以减少所需的LLR缓冲区大小和/或防止超出LLR缓冲区容量。 接收机可以使用更高性能的解调器,以便尽管较小的LLR位宽度来保持性能。 在发送设备中,根据接收机LLR缓冲器容量和输出传输的分组大小调节编码器码率,使得接收机LLR缓冲器容量不被超过。 可以实现接收机LLR位宽度调整,解调器选择和编码器码率调整的任何组合,以在保持性能的同时减少所需的LLR缓冲区大小。

    INTRA-CELL COMMON REUSE FOR A WIRELESS COMMUNICATION SYSTEM
    57.
    发明申请
    INTRA-CELL COMMON REUSE FOR A WIRELESS COMMUNICATION SYSTEM 有权
    无线通信系统的内部常见重用

    公开(公告)号:US20100061341A1

    公开(公告)日:2010-03-11

    申请号:US12617549

    申请日:2009-11-12

    IPC分类号: H04W4/00 H04B1/713

    摘要: To avoid or reduce intra-cell interference, each sector of a cell is associated with a sector-specific set of system resources (e.g., subbands) and at least one non-overlapping common set of system resources. Each common set for each sector includes system resources observing little or no interference from at least one other sector in the cell. The channel condition for a terminal in a given sector x is ascertained based on forward and/or reverse link measurements for the terminal. The terminal is assigned system resources from a common set or a sector-specific set for sector x based on the terminal's channel condition. For example, if the terminal observes high interference from another sector y, then the terminal is assigned system resources from a common set that observes little or no interference from sector y. The techniques may be used for an OFDMA system that uses frequency hopping.

    摘要翻译: 为了避免或减少小区内干扰,小区的每个扇区与系统资源(例如子带)的扇区特定集合和至少一个不重叠的公共系统资源集合相关联。 每个扇区的每个公共集合包括观察到小区中至少一个其他扇区几乎或不受干扰的系统资源。 基于终端的前向和/或反向链路测量来确定给定扇区x中的终端的信道条件。 基于终端的信道条件,从通用集或针对扇区x的扇区特定集分配终端。 例如,如果终端观察到来自另一个扇区y的高干扰,则终端从公共集分配系统资源,其观察到来自扇区y的很少或没有干扰。 这些技术可以用于使用跳频的OFDMA系统。

    SYSTEMS AND METHODS THAT UTILIZE A CAPACITY-BASED SIGNAL-TO-NOISE RATIO TO PREDICT AND IMPROVE MOBILE COMMUNICATION
    58.
    发明申请
    SYSTEMS AND METHODS THAT UTILIZE A CAPACITY-BASED SIGNAL-TO-NOISE RATIO TO PREDICT AND IMPROVE MOBILE COMMUNICATION 审中-公开
    利用基于能力的信号与噪声比进行预测和改进移动通信的系统和方法

    公开(公告)号:US20100029265A1

    公开(公告)日:2010-02-04

    申请号:US12577659

    申请日:2009-10-12

    IPC分类号: H04W24/00

    摘要: Techniques for utilizing a capacity-based effective signal-to-noise ratio (SNR) to improve wireless communication are described herein. In an embodiment, a mobile terminal can determine the effective SNR from a forward link channel using pilot/data symbols. The mobile terminal can convey the effective SNR to a base station. In order to minimize transmission overhead, the mobile terminal can quantize the effective SNR prior to transmitting it to the base station. In another embodiment, the base station can determine the effective SNR from a reverse link. The base station can utilize the effective SNR to facilitate scheduling transmissions from the mobile terminal, transmitting power control commands to the mobile terminal, and determining a supporting data rate for the mobile terminal, for example. Suitable SNRs include constrained, unconstrained, average, and/or approximated effective SNRs. In addition, various filters, such as an averaging filter, can be utilized to further process the effective SNR.

    摘要翻译: 这里描述了利用基于容量的有效信噪比(SNR)来改善无线通信的技术。 在一个实施例中,移动终端可以使用导频/数据符号从前向链路信道确定有效SNR。 移动终端可以将有效SNR传送给基站。 为了最小化传输开销,移动终端可以在将其发送到基站之前量化有效SNR。 在另一个实施例中,基站可以从反向链路确定有效SNR。 基站可以利用有效SNR来促进调度来自移动终端的传输,向移动终端发送功率控制命令,以及确定移动终端的支持数据速率。 合适的SNR包括约束的,无约束的,平均的和/或近似的有效SNR。 此外,可以使用诸如平均滤波器的各种滤波器来进一步处理有效SNR。

    ACCESS POINT IDENTIFIER CONFIGURATION PROCEDURE
    59.
    发明申请
    ACCESS POINT IDENTIFIER CONFIGURATION PROCEDURE 有权
    访问点识别器配置程序

    公开(公告)号:US20100008258A1

    公开(公告)日:2010-01-14

    申请号:US12499438

    申请日:2009-07-08

    IPC分类号: H04L12/28

    CPC分类号: H04W8/26 H04W84/005

    摘要: In an access point identifier configuration scheme, different procedures are used for configuring (e.g., updating) different types of access points. For example, the criteria used to determine which identifiers are to be assigned to mobile access points may be different than the criteria used to determine which identifiers are to be assigned to stationary access points.

    摘要翻译: 在接入点标识符配置方案中,使用不同的过程来配置(例如,更新)不同类型的接入点。 例如,用于确定哪些标识符被分配给移动接入点的标准可以不同于用于确定哪些标识符被分配给固定接入点的标准。

    ACCESS MECHANISMS FOR BASE STATIONS IN HETEROGENEOUS ACCESS POINT NETWORKS
    60.
    发明申请
    ACCESS MECHANISMS FOR BASE STATIONS IN HETEROGENEOUS ACCESS POINT NETWORKS 有权
    异构访问点网络基站的访问机制

    公开(公告)号:US20100008230A1

    公开(公告)日:2010-01-14

    申请号:US12498593

    申请日:2009-07-07

    IPC分类号: H04W48/02 G08C17/02 H04L1/24

    摘要: Providing for improved access communication for wireless systems is described herein. By way of example, wireless devices can employ wireless resource re-use in selecting a subset of access communication resources, to mitigate interference on uplink access requests. Re-use can be based on current network conditions, or on a type of base station facilitating the wireless communication. In some aspects, planned resource re-use can be facilitated by an access terminal. The access terminal requests neighboring or interfering network access points to reserve a set of resources for a serving access point. Reserved resources can be conveyed to the serving access point with an uplink access probe, to further mitigate interference.

    摘要翻译: 这里描述了为无线系统提供改进的接入通信。 作为示例,无线设备可以在选择接入通信资源的子集时采用无线资源重用,以减轻对上行链路接入请求的干扰。 重新使用可以基于当前网络条件,或者基于促进无线通信的基站类型。 在一些方面,接入终端可以促进计划的资源重用。 接入终端请求相邻或干扰的网络接入点来为服务接入点预留一组资源。 可以利用上行链路接入探测器将保留的资源传送到服务接入点,以进一步减轻干扰。