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    • 32. 发明申请
    • MEDIA STREAMING WITH HIGH RATE AVAILABILITY
    • 具有高速率可用性的媒体流
    • WO2015186050A1
    • 2015-12-10
    • PCT/IB2015/054153
    • 2015-06-01
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    • KHAYRALLAH, Ali S.
    • H04L29/06H04W36/00
    • H04W28/0268H04L9/06H04L9/16H04L63/045H04L63/107H04L65/1083H04L65/60H04L65/80H04L2209/60H04L2209/80H04W12/02H04W12/04H04W36/00H04W36/04H04W36/26
    • A system (26) and method (40) for media streaming In a scenario where very high bitrate wireless service is available within a macro cell (10) through small cells (12, 14). When a mobile device (22) is in a small cell, a base station (20) may download the multimedia content onto the mobile device at the high bitrate instead of streaming the content at a low bitrate. The mobile device cannot misuse the content made available Through the download because its ability to de-scramble the downloaded information is made time dependent by a two-stage scrambling process at the base station that keeps the information scrambled until it is ready to be consumed. The base station withholds from the mobile device information related to de-scrambling of the received content until the appropriate time. Such withheld information includes time-varying decryption keys, which control the timing of decryption and are supplied to the mobile device in a temporally sequential maimer.
    • 用于媒体流的系统(26)和方法(40)在通过小小区(12,14)在宏小区(10)内可用非常高的比特率无线服务的场景中, 当移动设备(22)在小小区中时,基站(20)可以以高比特率将多媒体内容下载到移动设备上,而不是以低比特率流式传输内容。 移动设备不能滥用可用的内容通过下载,因为其将下载的信息解密的能力与基站处的两级加扰处理时间相关,从而保持信息被加扰,直到其准备好被消费。 该基站从移动设备保留与所接收的内容的去加扰有关的信息,直到适当的时间。 这种保留信息包括随时间变化的解密密钥,其控制解密的定时,并且在时间上依赖于maimer提供给移动设备。
    • 33. 发明申请
    • CDMA RECEIVERS FOR THE GOLDEN CODE
    • CDMA接收器用于黄金代码
    • WO2009120135A1
    • 2009-10-01
    • PCT/SE2009/050268
    • 2009-03-17
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    • WANG, Yi-Pin EricKHAYRALLAH, Ali S.
    • H04B1/707H04L1/06
    • H04B1/712H04B2201/709727H04L1/0631H04L1/0643
    • A Generalized Rake (G-Rake) receiver (100, 200) is adapted for Golden code reception in a CDMA system. Signals transmitted by two or more transmit antennas are received at two or more receiver antennas (102, 104, 202, 204). The signal from each receiver antenna (102, 104, 202, 204) is despread, and channel estimation is performed for each transmit antenna. G- Rake combining weights are calculated based on impairment correlation across G-Rake fingers and channel coefficients corresponding to each transmit antenna. The despread values from each symbol period are combined over a plurality of symbol periods based on the combining weights. The combined values are processed using coefficients derived from the Golden number to generate a set of decision variables, and the Golden encoded symbols are jointly detected from the decision variables. In some embodiments, spherical decoding and triangularization significantly simplify the decoding problem formulation.
    • 广义耙(G-Rake)接收器(100,200)适用于CDMA系统中的金码接收。 由两个或多个发射天线发射的信号在两个或更多个接收机天线(102,104,202,204)处被接收。 来自每个接收机天线(102,104,202,204)的信号被解扩展,并且对于每个发射天线执行信道估计。 基于G-Rake指的损伤相关性和对应于每个发射天线的信道系数来计算G-耙组合权重。 基于组合权重,从多个符号周期组合来自每个符号周期的解扩值。 使用从黄金数字导出的系数来处理组合值以生成一组决策变量,并且从决策变量共同检测到黄金编码符号。 在一些实施例中,球面解码和三角化显着简化了解码问题公式。
    • 36. 发明申请
    • EQUALIZATION WITH NOISY CHANNEL STATE INFORMATION
    • 与噪声通道状态信息的均衡
    • WO2015189724A1
    • 2015-12-17
    • PCT/IB2015/053343
    • 2015-05-07
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    • KHAYRALLAH, Ali S.
    • H04L25/03
    • H04L25/03961H04L25/0242H04L25/03197
    • Systems and methods related to improved coherent demodulation and, in particular, improved channel equalization that accounts for variation in an effective channel estimation error with transmitted symbols are disclosed. In one embodiment, a wireless node (16) includes a receiver front-end (18), a channel estimator (24), and an equalizer (26). The receiver front-end (18) is adapted to output samples of a received signal. The channel estimator (24) is adapted to estimate a channel between a transmitter of the received signal and the wireless node (16) based on the samples of the received signal. The equalizer (26) is adapted to process the samples of the received signal according to a modified equalization scheme that compensates for variation in an effective channel estimation error with transmitted symbols to thereby provide corresponding bit or symbol decisions. In this manner, channel equalization is improved, particularly for a wireless system that utilizes a modulation scheme with varying amplitude.
    • 公开了与改进的相干解调有关的系统和方法,特别是改进的信道均衡,其考虑了传输符号的有效信道估计误差的变化。 在一个实施例中,无线节点(16)包括接收机前端(18),信道估计器(24)和均衡器(26)。 接收器前端(18)适于输出接收信号的采样。 信道估计器(24)适于基于接收信号的样本来估计接收信号的发射机与无线节点(16)之间的信道。 均衡器(26)适于根据经修正的均衡方案来处理接收信号的采样,该均衡方案用传输符号补偿有效信道估计误差的变化,从而提供相应的位或符号决定。 以这种方式,改善了信道均衡,特别是对于利用具有变化幅度的调制方案的无线系统。