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公开(公告)号：US20210307001A1
公开(公告)日：2021-09-30
申请号：US17135393
申请日：2020-12-28
摘要： A method for communicating over a wireless backhaul channel comprising generating a radio frame comprising a plurality of time slots, wherein each time slot comprises a plurality of symbols in time and a plurality of sub-carriers in a system bandwidth, broadcasting a broadcast channel signal comprising a transmission schedule to a plurality of remote units in a number of consecutive sub-carriers centered about a direct current (DC) sub-carrier in at least one of the time slots in the radio frame regardless of the system bandwidth, and transmitting a downlink (DL) control channel signal and a DL data channel signal to a first of the remote units, wherein the DL data channel signal is transmitted by employing a single carrier block transmission scheme comprising a Discrete Fourier Transform (DFT) spreading for frequency diversity.
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公开(公告)号：US10334569B2
公开(公告)日：2019-06-25
申请号：US14297145
申请日：2014-06-05
摘要： A method for communicating over a wireless backhaul channel comprising generating a radio frame comprising a plurality of time slots, wherein each time slot comprises a plurality of symbols in time and a plurality of sub-carriers in a system bandwidth, broadcasting a broadcast channel signal comprising a transmission schedule to a plurality of remote units in a number of consecutive sub-carriers centered about a direct current (DC) sub-carrier in at least one of the time slots in the radio frame regardless of the system bandwidth, and transmitting a downlink (DL) control channel signal and a DL data channel signal to a first of the remote units, wherein the DL data channel signal is transmitted by employing a single carrier block transmission scheme comprising a Discrete Fourier Transform (DFT) spreading for frequency diversity.
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公开(公告)号：US10136418B2
公开(公告)日：2018-11-20
申请号：US15236276
申请日：2016-08-12
摘要： A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
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公开(公告)号：US20160353433A1
公开(公告)日：2016-12-01
申请号：US15236276
申请日：2016-08-12
CPC分类号： H04W72/0413 , H03M13/1515 , H03M13/2966 , H03M13/611 , H03M13/618 , H03M13/635 , H04H20/38 , H04L1/0041 , H04L1/0057 , H04L1/0061 , H04L1/0064 , H04L1/0071 , H04L1/0076 , H04L1/1812 , H04W72/0446
摘要： A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
摘要翻译： 一种在无线接入网络中的无线回程远程单元处的上行链路（UL）无线回程通信的方法，包括通过下行链路（DL）物理层广播信道接收无线电帧的配置和传输调度，其中所述传输调度包括传输 生成UL数据帧的UL数据帧的生成包括对数据比特流执行前向纠错（FEC）编码以生成多个FEC码字，其中执行FEC编码包括执行Reed Solomon（ RS）编码以产生多个RS码字，在RS码字上执行字节交织，并对字节交织的RS码字执行Turbo编码，以生成一个或多个Turbo码字，其中每个Turbo码字从更多的编码 而不是一个RS码字，并且根据传输分配来发送UL数据帧。
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5.发明授权公开(公告)号：US09059881B2
公开(公告)日：2015-06-16
申请号：US14051194
申请日：2013-10-10
CPC分类号： H04L25/067 , H04L27/3411 , H04L27/38
摘要： Embodiments of the invention provide a method of decoding of hexagonal constellations. The decoding methods exploit the inherent structure of the hexagonal grid to eliminate/minimize the requirements for distance computations. A constellation which has unused constellation points is received. A plurality of lookup tables is used for indicating whether a particular constellation point is used. The lookup tables are indexed using the two integers u and v. An initial estimate ū and v is found. The Euclidean distance to the immediate neighbors resulting in the immediate upper and lower integers for ū and v is computed. From the distance to the nearest neighbor, the log-likelihood ratio value is computed.
摘要翻译： 本发明的实施例提供了一种对六角形星座进行解码的方法。 解码方法利用六角网格的固有结构来消除/最小化距离计算的要求。 接收到具有未使用的星座点的星座。 多个查找表用于指示是否使用特定的星座点。 查找表使用两个整数u和v进行索引，找到初始估计ū和v。 计算与直接邻居的欧几里德距离，导致ū和v的立即上下整数。 从距离到最近的邻居，计算对数似然比值。
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6.发明授权Methods for assigning codewoods to points in hexagonal constellations in digital communication systems 有权将码字分配给数字通信系统中的六角形星座中的点的方法公开(公告)号：US08787477B2
公开(公告)日：2014-07-22
申请号：US14030338
申请日：2013-09-18
CPC分类号： H04L1/0054 , H04L27/3405 , H04L27/38
摘要： Embodiments of the invention provide a methods for the assignment of codewords to the available constellation points to minimize the Hamming distance between adjacent codewords. An hexagonal constellation is modeled as a two-dimensional trellis with an horizontal axis varying across a plurality of constellation points and a vertical axis varying across a plurality of codewords [0, 1, . . . , N−1]. A best path through the trellis is found to select a single constellation point per each codeword where a codeword is to be assigned. A each state in the transition across the trellis diagram, a current score and the best path that leads to the state is stored in a memory. Each codeword is assigned to the selected constellation point. The hexagonal constellation is used for transmitting data in a communication system.
摘要翻译： 本发明的实施例提供了一种用于将码字分配给可用的星座点以使相邻码字之间的汉明距离最小化的方法。 六边形星座被建模为具有在多个星座点上变化的水平轴和在多个码字[0,1]上变化的垂直轴线）的二维网格。 。 。 ，N-1]。 发现通过网格的最佳路径是为每个码字选择一个单一的星座点，其中要分配码字。 跨越格状图的过渡中的每个状态，当前分数和导致状态的最佳路径被存储在存储器中。 每个码字被分配给所选择的星座点。 六边形星座用于在通信系统中传输数据。
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公开(公告)号：US11438882B2
公开(公告)日：2022-09-06
申请号：US16872135
申请日：2020-05-11
摘要： A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
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公开(公告)号：US20190053224A1
公开(公告)日：2019-02-14
申请号：US16156153
申请日：2018-10-10
摘要： A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
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9.发明授权公开(公告)号：US09955300B2
公开(公告)日：2018-04-24
申请号：US13901777
申请日：2013-05-24
摘要： A method for incorporating invisible APs for RSSI based indoor positioning is presented. An empirical estimate of the probability of invisible APs versus distance is computed. An estimated position of the receiver can be computed using any statistical estimator based on the probability. In one embodiment, an estimate of the probability is computed by combining the probability over a set of visible APs and the probability over a set of invisible APs with the probability of individual contribution. In one embodiment a dynamic procedure is used to update the invisible probability that is computed using an AP dictionary built on the fly as new APs are detected. Incorporating invisible APs for estimating user position from the RSSI measurements for indoor positioning provides a better positioning accuracy as compared to typical estimators which rely only on the visible APs.
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10.发明申请公开(公告)号：US20170346715A1
公开(公告)日：2017-11-30
申请号：US15169074
申请日：2016-05-31
IPC分类号： H04L12/751 , H04L12/733
摘要： The breadth-first search (BFS) starts with a root node. In the first stage, all neighbors of the root node are discovered and added to the nodes frontier. In the following stages, unvisited nodes from the neighbors of the frontier nodes are discovered and added to the frontier. To improve the parallelization of the BFS, the bottom-up search iterates over all unvisited nodes, where each unvisited node searches for its visited neighbors. Communication between nodes and clusters is pipelined with the execution of the BFS.
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