Rate control for multi-channel communication systems
    1.
    发明授权
    Rate control for multi-channel communication systems 有权
    多通道通讯系统的速率控制

    公开(公告)号:US08428156B2

    公开(公告)日:2013-04-23

    申请号:US11688235

    申请日:2007-03-19

    IPC分类号: H04K1/10 H04L27/28

    摘要: Various methods and systems for determining reverse-link data rates in a multi-user communication system are disclosed. For example, an apparatus for controlling a data rate of at least a first UE in a multi-user communication system is disclosed. The apparatus may include a channel estimation device configured to determine channel estimates for a plurality of different reverse-link signals to produce a plurality of channel estimates, a demodulation device configured to determine a first signal-to-noise (SNR) ratio for the first UE using the plurality of different channels estimates, and a data rate determining device configured to determine a first reverse-link data rate for the first UE using the first SNR.

    摘要翻译: 公开了用于在多用户通信系统中确定反向链路数据速率的各种方法和系统。 例如,公开了一种用于在多用户通信系统中控制至少第一UE的数据速率的装置。 该装置可以包括:信道估计装置,被配置为确定多个不同反向链路信号的信道估计以产生多个信道估计;解调装置,被配置为确定第一信道估计的第一信噪比 UE使用多个不同信道估计,以及数据速率确定装置,被配置为使用第一SNR确定第一UE的第一反向链路数据速率。

    Uplink channel estimation using a signaling channel
    2.
    发明授权
    Uplink channel estimation using a signaling channel 有权
    使用信令信道的上行链路信道估计

    公开(公告)号:US09130791B2

    公开(公告)日:2015-09-08

    申请号:US11687645

    申请日:2007-03-17

    摘要: Techniques for efficiently deriving uplink channel estimates without consuming much additional uplink resources are described. A user equipment (UE) may send a request for uplink resources on a request channel (REQCH) whenever the UE desires to transmit data on the uplink. The UE may send the REQCH on a set of subcarriers and from multiple antennas, e.g., send REQCH data on data subcarriers and pilot on pilot subcarriers. A node B may receive the request, estimate the complex channel gains for the pilot subcarriers based on received pilot symbols, and coherently demodulate received data symbols based on the channel gain estimates. The Node B may estimate the complex channel gains for the data subcarriers based on demodulated data symbols and derive a channel estimate for each UE antenna based on the channel gain estimates for the pilot and data subcarriers. The Node B may use the channel estimates for MIMO scheduling, subband scheduling, and rate selection.

    摘要翻译: 描述了在不消耗大量附加上行链路资源的情况下有效地导出上行链路信道估计的技术。 每当UE希望在上行链路上发送数据时,用户设备(UE)可以在请求信道(REQCH)上发送上行链路资源的请求。 UE可以在一组子载波上从多个天线发送REQCH,例如在数据子载波上发送REQCH数据,并在导频子载波上导频。 节点B可以接收该请求,基于接收到的导频符号估计导频子载波的复信道增益,并且基于信道增益估计来相干地解调所接收的数据符号。 节点B可以基于解调的数据符号估计数据子载波的复信道增益,并且基于导频和数据子载波的信道增益估计导出每个UE天线的信道估计。 节点B可以使用用于MIMO调度,子带调度和速率选择的信道估计。

    Method and apparatus for selection mechanism between OFDM-MIMO and LFDM-SIMO
    3.
    发明授权
    Method and apparatus for selection mechanism between OFDM-MIMO and LFDM-SIMO 有权
    OFDM-MIMO与LFDM-SIMO之间的选择机制的方法和装置

    公开(公告)号:US08081698B2

    公开(公告)日:2011-12-20

    申请号:US11770600

    申请日:2007-06-28

    IPC分类号: H04B7/02

    摘要: Systems and methodologies are described that facilitate switching between various combinations of MIMO, SIMO, SISO and OFDM, LFDM and IFDM. According to various aspects, a method for a wireless communication network is provided that includes: receiving a first set of data information, wherein the first set of information comprising a first value, determining if the first value is above a threshold and transmitting an indication to switch to using a first transmission technique if determined that the first value is above the threshold.

    摘要翻译: 描述了促进MIMO,SIMO,SISO和OFDM,LFDM和IFDM的各种组合之间的切换的系统和方法。 根据各方面,提供了一种用于无线通信网络的方法,包括:接收第一组数据信息,其中所述第一组信息包括第一值,确定所述第一值是否高于阈值,并将指示发送到 如果确定第一值高于阈值,则切换到使用第一传输技术。

    Bundled frequency division multiplexing structure in wireless communications
    6.
    发明授权
    Bundled frequency division multiplexing structure in wireless communications 有权
    无线通信中捆绑的频分复用结构

    公开(公告)号:US08855064B2

    公开(公告)日:2014-10-07

    申请号:US13004614

    申请日:2011-01-11

    IPC分类号: H04W4/00 H04W72/04 H04L5/00

    摘要: Methods and apparatuses are provided that facilitate allocating a portion of a resource block to a power-limited device for communicating therewith. The power-limited device may not be capable of transmitting over an entire resource block due to power limitations; thus, a portion of the resource block can be assigned thereto, allowing for allocating at least a different portion of the resource block to at least one different device to optimize communications over the resource block. In addition, the portion of the resource block can be allocated across one or more bundled time transmit intervals (TTI) to allow for effective communication of time-sensitive data, such as voice over internet protocol (VoIP).

    摘要翻译: 提供的方法和装置有助于将资源块的一部分分配给功率受限设备以与之通信。 由于功率限制,功率受限设备可能不能在整个资源块上传输; 因此,资源块的一部分可以被分配给它,允许将资源块的至少不同部分分配给至少一个不同的设备以优化资源块上的通信。 此外,可以通过一个或多个捆绑的时间发送间隔(TTI)来分配资源块的部分,以允许诸如网络协议(VoIP)之类的时间敏感数据的有效通信。

    Methods and apparatus for power allocation and/or rate selection for UL MIMO/SIMO operations with PAR considerations
    8.
    发明授权
    Methods and apparatus for power allocation and/or rate selection for UL MIMO/SIMO operations with PAR considerations 有权
    用于具有PAR考虑的UL MIMO / SIMO操作的功率分配和/或速率选择的方法和装置

    公开(公告)号:US08655396B2

    公开(公告)日:2014-02-18

    申请号:US12444575

    申请日:2007-11-06

    IPC分类号: H04B7/00 H04L23/02

    摘要: A method for a wireless communication includes receiving or storing a peak to average (PAR) back off value; and applying the PAR back off value to determine the transmission power and rate for SIMO and MIMO transmissions. In one aspect, the PAR back off value is at least partially based on modulation type. In another aspect, the PAR back off value is more for higher order QAM than for QPSK. The power allocation algorithm for different UL MIMO schemes is described as follows. For MIMO without antenna permutation (e.g. per antenna rate control), different PAR back off values are considered for different data streams. For MIMO with antenna permutation or other unitary transformation such as virtual antenna mapping or precoding, the PAR back off are determined based on combined channel. The transmission data rate depends on power and also the receiver algorithms such as a MMSE receiver or MMSE-SIC receiver.

    摘要翻译: 一种用于无线通信的方法包括:接收或存储峰值平均值(PAR)回退值; 以及应用PAR回退值来确定SIMO和MIMO传输的传输功率和速率。 在一个方面,PAR回退值至少部分地基于调制类型。 在另一方面,对于高阶QAM而言,PAR倒退值比对于QPSK更多。 不同UL MIMO方案的功率分配算法如下。 对于没有天线排列的MIMO(例如,每个天线速率控制),对不同的数据流考虑不同的PAR后退值。 对于具有天线置换或诸如虚拟天线映射或预编码的其它单位变换的MIMO,基于组合信道确定PAR退避。 传输数据速率取决于功率,还有接收机算法,如MMSE接收机或MMSE-SIC接收机。

    Method and apparatus for multiplexing CDM pilot and FDM data
    9.
    发明授权
    Method and apparatus for multiplexing CDM pilot and FDM data 有权
    CDM导频和FDM数据的复用方法和装置

    公开(公告)号:US08369299B2

    公开(公告)日:2013-02-05

    申请号:US12116081

    申请日:2008-05-06

    IPC分类号: H04J1/00

    摘要: Techniques for sending control information in a wireless communication system are described. In an aspect, a user equipment (UE) may send data for control information in a resource block with frequency division multiplexing (FDM) and may send pilot in the resource block with frequency-domain code division multiplexing (CDM). The UE may determine multiple groups of subcarriers to use to send data in multiple symbol periods of the resource block based on a predetermined pattern or a pseudo-random hopping pattern. Each group may include consecutive subcarriers to support localized FDM. The multiple groups may include different subcarriers to provide frequency diversity and possibly interference averaging. The UE may send modulation symbols for data (e.g., in the time domain) on the multiple groups of subcarriers in the multiple symbol periods. The UE may send a reference signal sequence for pilot on multiple subcarriers in each symbol period for pilot.

    摘要翻译: 描述用于在无线通信系统中发送控制信息的技术。 在一方面,用户设备(UE)可以通过频分复用(FDM)在资源块中发送用于控制信息的数据,并且可以在资源块中使用频域码分复用(CDM)发送导频。 UE可以基于预定模式或伪随机跳频模式来确定用于在资源块的多个符号周期中发送数据的多个子载波组。 每个组可以包括连续的子载波以支持本地化的FDM。 多个组可以包括不同的子载波以提供频率分集和可能的干扰平均。 UE可以在多个符号周期中的多个子载波组上发送用于数据(例如,在时域中)的调制符号。 UE可以在用于导频的每个符号周期中在多个子载波上发送用于导频的参考信号序列。

    DETERMINING AN UPLINK CONTROL PATH WITH BLIND DECODING
    10.
    发明申请
    DETERMINING AN UPLINK CONTROL PATH WITH BLIND DECODING 有权
    确定具有盲解码功能的上拉式控制路径

    公开(公告)号:US20120184314A1

    公开(公告)日:2012-07-19

    申请号:US13306690

    申请日:2011-11-29

    IPC分类号: H04W72/04

    摘要: In an aspect, a method assists with blind decoding of uplink control signals on a Physical Uplink Shared Channel (PUSCH) and Physical Uplink Control Channel (PUCCH). The method assists in determining the uplink control path in the event a user equipment (UE) misses an uplink grant and blind decoding occurs. It is determined whether an uplink acknowledgement, rank indicator, and/or channel quality indicator are found on a PUSCH. If not, it is determined whether a scheduling request is expected and whether special handling for the scheduling request is indicated. Depending on those determinations, and whether any decoding attempts for uplink signals are successful, either the PUSCH or PUCCH is selected as the uplink control path.

    摘要翻译: 一方面,一种方法有助于物理上行链路共享信道(PUSCH)和物理上行链路控制信道(PUCCH)上的上行链路控制信号的盲解码。 该方法有助于在用户设备(UE)错过上行链路许可并发生盲解码的情况下确定上行链路控制路径。 确定在PUSCH上是否找到上行链路确认,秩指示符和/或信道质量指示符。 如果不是,则确定是否期望调度请求,以及是否指示对于调度请求的特殊处理。 根据这些确定,以及对于上行链路信号的任何解码尝试是否成功,选择PUSCH或PUCCH作为上行链路控制路径。