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31. 发明授权

US08305999B2 Resource allocation and mapping in a wireless communication system 有权
标题翻译：无线通信系统中的资源分配和映射
公开(公告)号：US08305999B2
公开(公告)日：2012-11-06
申请号：US11969200
申请日：2008-01-03
申请人： Ravi Palanki , Alexei Gorokhov , Aamod Khandekar , Naga Bhushan
发明人： Ravi Palanki , Alexei Gorokhov , Aamod Khandekar , Naga Bhushan
IPC分类号： H04B7/216
CPC分类号： H04W72/04 , H04B1/692 , H04B1/7143 , H04L5/0012 , H04L5/0023 , H04L5/0037 , H04L5/0055 , H04L27/0008
摘要： Techniques for allocating and mapping resources in a wireless communication system are described. The system may use hop-ports to facilitate allocation and use of subcarriers. In one aspect, the hop-ports may be partitioned into multiple subzones, with each subzone including a configurable number of hop-ports. The hop-ports within each subzone may be permuted or shuffled based on a permutation function. After permutation, the hop-ports in all subzones may be mapped to the subcarriers based on local or global hopping. In another aspect, a set of hop-ports may be mapped to a set of subcarriers. A hop-port may be mapped to an unavailable subcarrier and may then be remapped to another available subcarrier. In yet another aspect, a set of hop-ports may be mapped to a set of subcarriers distributed (e.g., evenly) across all subcarriers but avoiding subcarriers in a reserved zone.
摘要翻译：描述了用于在无线通信系统中分配和映射资源的技术。系统可以使用跳转端口来促进子载波的分配和使用。在一个方面，跳跃端口可以被划分成多个子区域，每个子区域包括可配置数量的跳接口。基于置换功能，每个子区域内的跳转口可以被排列或混洗。在排列之后，所有子区域中的跳跃端口可以基于本地或全局跳频映射到子载波。在另一方面，一组跳跃端口可以映射到一组子载波。跳跃端口可以被映射到不可用的子载波，然后可以重新映射到另一个可用的子载波。在另一方面，一组跳跃端口可以被映射到跨所有子载波分布（例如，均匀）但是避开保留区域中的子载波的一组子载波。

32. 发明授权

US08156390B2 Pruned bit-reversal interleaver 有权
标题翻译：修剪的位反转交织器
公开(公告)号：US08156390B2
公开(公告)日：2012-04-10
申请号：US12489431
申请日：2009-06-23
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： G06F11/00 , H03M13/03
CPC分类号： H03M13/2789 , H03M13/2757 , H03M13/276
摘要： A pruned bit-reversal interleaver supports different packet sizes and variable code rates and provides good spreading and puncturing properties. To interleave data, a packet of input data of a first size is received. The packet is extended to a second size that is a power of two, e.g., by appending padding or properly generating write addresses. The extended packet is interleaved in accordance with a bit-reversal interleaver of the second size, which reorders the bits in the extended packet based on their indices. A packet of interleaved data is formed by pruning the output of the bit-reversal interleaver, e.g., by removing the padding or properly generating read addresses. The pruned bit-reversal interleaver may be used in combination with various types of FEC codes such as a Turbo code, a convolutional code, or a low density parity check (LDPC) code.
摘要翻译：修剪的位反转交错器支持不同的分组大小和可变代码率，并提供良好的扩展和打孔属性。为了交织数据，接收到第一大小的输入数据的分组。例如，通过附加填充或适当地生成写入地址，将分组扩展到二次幂的第二大小。扩展分组根据第二大小的位反转交织器进行交织，根据它们的索引对扩展分组中的比特进行重新排序。通过例如通过去除填充或适当地生成读取地址来修剪比特反转交织器的输出来形成交织数据的分组。修剪的位反转交织器可以与诸如Turbo码，卷积码或低密度奇偶校验（LDPC）码的各种类型的FEC码组合使用。

33. 发明授权

US08156389B2 Pruned bit-reversal interleaver 有权
标题翻译：修剪的位反转交织器
公开(公告)号：US08156389B2
公开(公告)日：2012-04-10
申请号：US12371599
申请日：2009-02-14
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： G06F11/00
CPC分类号： H03M13/2789 , H03M13/2757 , H03M13/276
摘要： A pruned bit-reversal interleaver supports different packet sizes and variable code rates and provides good spreading and puncturing properties. To interleave data, a packet of input data of a first size is received. The packet is extended to a second size that is a power of two, e.g., by appending padding or properly generating write addresses. The extended packet is interleaved in accordance with a bit-reversal interleaver of the second size, which reorders the bits in the extended packet based on their indices. A packet of interleaved data is formed by pruning the output of the bit-reversal interleaver e.g., by removing the padding or properly generating read addresses. The pruned bit-reversal interleaver may be used in combination with various types of FEC codes such as a Turbo code, a convolutional code, or a low density parity check (LDPC) code.
摘要翻译：修剪的位反转交错器支持不同的分组大小和可变代码率，并提供良好的扩展和打孔属性。为了交织数据，接收到第一大小的输入数据的分组。例如，通过附加填充或适当地生成写入地址，将分组扩展到二次幂的第二大小。扩展分组根据第二大小的位反转交织器进行交织，根据它们的索引对扩展分组中的比特进行重新排序。通过修剪比特反转交织器的输出，例如通过去除填充或适当地生成读取地址来形成交织数据的分组。修剪的位反转交织器可以与诸如Turbo码，卷积码或低密度奇偶校验（LDPC）码的各种类型的FEC码组合使用。

34. 发明授权

US08098710B2 Methods and apparatus for flexible hopping in a multiple-access communication network 有权
标题翻译：多址通信网络中灵活跳频的方法和装置
公开(公告)号：US08098710B2
公开(公告)日：2012-01-17
申请号：US12947487
申请日：2010-11-16
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H04B1/00
CPC分类号： H04L5/0007 , H04B1/7143 , H04L5/0021 , H04L5/0048 , H04L9/0625 , H04L2209/08 , H04L2209/80
摘要： Techniques for efficiently designing random hopping patterns in a communications system are disclosed. The disclosed embodiments provide for methods and systems for generating random hopping patterns, updating the patterns frequently, generating different patterns for different cells/sectors, and generating patterns of nearby sub-carriers for block hopping.
摘要翻译：公开了在通信系统中有效设计随机跳频模式的技术。所公开的实施例提供用于生成随机跳频模式，频繁更新模式，为不同小区/扇区生成不同模式以及生成用于块跳跃的附近子载波的模式的方法和系统。

35. 发明申请

US20110216704A1 ENHANCED FREQUENCY DIVISION MULTIPLE ACCESS FOR WIRELESS COMMUNICATION 有权
标题翻译：无线通信的增强频段多路访问
公开(公告)号：US20110216704A1
公开(公告)日：2011-09-08
申请号：US13106990
申请日：2011-05-13
申请人： Aamod Khandekar , Ravi Palanki
发明人： Aamod Khandekar , Ravi Palanki
IPC分类号： H04W4/00
CPC分类号： H04L27/2618 , H04L5/0007 , H04L5/0039 , H04L5/0041 , H04L5/0046 , H04L25/0228 , H04L25/03159
摘要： Enhanced frequency division multiple access (EFDMA) is a multiplexing scheme that sends modulation symbols in the time domain and achieves a lower PAPR than OFDM. An EFDMA symbol occupies multiple subband groups that are spaced apart in a frequency band, with each subband group containing multiple adjacent subbands. To generate an EFDMA symbol, multiple modulation symbols are mapped onto a first sequence of symbols. A transform (e.g., a DFT) is performed on the first sequence to obtain a second sequence of values. The values in the second sequence corresponding to the subbands used for the EFDMA symbol are retained, and the remaining values are zeroed out to obtain a third sequence of values. An inverse transform (e.g., an IDFT) is performed on the third sequence to obtain a fourth sequence of samples. A phase ramp may be applied on the fourth sequence, and a cyclic prefix is appended to form the EFDMA symbol.
摘要翻译：增强型频分多址（EFDMA）是在时域中发送调制符号并实现比OFDM更低的PAPR的复用方式。 EFDMA符号占据在频带中间隔开的多个子带组，每个子带组包含多个相邻子带。为了产生EFDMA符号，将多个调制符号映射到第一符号序列上。对第一序列执行变换（例如，DFT）以获得第二值序列。对应于用于EFDMA符号的子带的第二序列中的值被保留，并且剩余的值被清零以获得第三值序列。对第三序列执行逆变换（例如，IDFT）以获得第四序列。可以在第四序列上施加相位斜坡，并且附加循环前缀以形成EFDMA符号。

36. 发明授权

US07864819B2 Method and apparatus for bit demultiplexing in a wireless communication systems 有权
标题翻译：用于无线通信系统中的位解复用的方法和装置
公开(公告)号：US07864819B2
公开(公告)日：2011-01-04
申请号：US12091628
申请日：2006-10-27
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H04J3/02
CPC分类号： H04L5/0041 , H03M13/2725 , H03M13/276 , H03M13/2789 , H03M13/2957 , H04B1/7143 , H04J13/00 , H04L1/0003 , H04L1/0026 , H04L1/0625 , H04L5/0007 , H04L5/0026 , H04L5/005 , H04L25/0228 , H04L27/2602 , H04W52/54
摘要： A method and apparatus of bit demultiplexing for a rate 1/3 convolutional encoder in a wireless communication system, the method comprising, receiving bits from the rate-1/3 convolutional encoder, demultiplexing the received bits by distributing the bits sequentially into 3 sequences denoted as V0, V1 and V2 such that the first bit is going to the V0 sequence, the second bit is going to the V1 sequence and the third bit is going to the V2 sequence and ordering the sequences such that V0 is the first sequence, V1 is the second sequence and V2 is the third sequence.
摘要翻译：一种用于无线通信系统中的速率1/3卷积编码器的比特解复用方法和装置，所述方法包括：从速率-1 / 3卷积编码器接收比特，通过将所述比特顺序地分配给3 作为V0，V1和V2使得第一位进入V0序列，第二位进入V1序列，第三位进入V2序列，并对序列进行排序，使得V0是第一序列，V1 是第二个序列，V2是第三个序列。

37. 发明申请

US20090154624A1 METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A TIMING CORRECTION MESSAGE IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：用于在无线通信系统中发送和接收定时校正消息的方法和装置
公开(公告)号：US20090154624A1
公开(公告)日：2009-06-18
申请号：US12091588
申请日：2006-10-27
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H04L7/00
CPC分类号： H04L5/0041 , H03M13/2725 , H03M13/276 , H03M13/2789 , H03M13/2957 , H04B1/7143 , H04J13/00 , H04L1/0003 , H04L1/0026 , H04L1/0625 , H04L5/0007 , H04L5/0026 , H04L5/005 , H04L25/0228 , H04L27/2602 , H04W52/54
摘要： A method for transmitting a timing correction message in a wireless communication system, the method comprising, Generating the timing correction message comprising a 8-bit MessageID field and a 2-bit NumSectors field wherein, the NumSectors field indicates the number of sector records in the message and a 16 bit TimingCorrection field wherein, the TimingCorrection indicates the timing correction on the sector and last 15 bits indicate the magnitude of timing correction in units of ⅛ chips and transmitting the timing correction message over a communication link.
摘要翻译：一种用于在无线通信系统中发送定时校正消息的方法，所述方法包括：生成包括8位MessageID字段和2位NumSectors字段的定时校正消息，其中NumSectors字段指示在消息和16位定时校正字段，其中，定时校正指示扇区上的定时校正，最后15位表示以1/8个码片为单位的定时校正的幅度，并且通过通信链路发送定时校正消息。

38. 发明申请

US20090075664A1 MULTIPLEXED BEACON SYMBOLS FOR A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于无线通信系统的多路标志符号
公开(公告)号：US20090075664A1
公开(公告)日：2009-03-19
申请号：US12206528
申请日：2008-09-08
申请人： Ravi Palanki , Avneesh Agrawal , Aamod Khandekar
发明人： Ravi Palanki , Avneesh Agrawal , Aamod Khandekar
IPC分类号： H04W40/00
CPC分类号： H04L25/4902 , H04L5/0023 , H04L5/0044 , H04L5/0053 , H04L27/2601
摘要： Techniques for transmitting information using beacon symbols are described. A transmitter may map first information to at least one subcarrier in a first set of subcarriers, with the first information being conveyed by the position of the at least one subcarrier. The transmitter may map second information to one or more subcarriers in a second set of subcarriers. The second information may be conveyed by one or more modulation symbols sent on the one or more subcarriers. The transmitter may generate at least one beacon symbol having the first information mapped to the at least one subcarrier in the first set and the second information mapped to the one or more subcarriers in the second set. In one design, the transmitter may frequency division multiplex the first information with the second information. In another design, the transmitter may puncture the second information on the at least one subcarrier with the first information.
摘要翻译：描述了使用信标符号发送信息的技术。发射机可以将第一信息映射到第一组子载波中的至少一个子载波，其中第一信息由至少一个子载波的位置传送。发射机可以将第二信息映射到第二组子载波中的一个或多个子载波。第二信息可以由在一个或多个子载波上发送的一个或多个调制符号传送。发射机可以生成具有映射到第一组中的至少一个子载波的第一信息和映射到第二组中的一个或多个子载波的第二信息的至少一个信标符号。在一种设计中，发射机可以将第一信息与第二信息进行频分复用。在另一种设计中，发射机可以利用第一信息来对该至少一个子载波的第二信息进行穿孔。

39. 发明申请

US20080168332A1 FEC CODE AND CODE RATE SELECTION BASED ON PACKET SIZE 有权
标题翻译：基于分组大小的FEC码和码率选择
公开(公告)号：US20080168332A1
公开(公告)日：2008-07-10
申请号：US11943172
申请日：2007-11-20
申请人： Ravi Palanki , Jeremy H. Lin , Aamod Khandekar , Alexei Gorokhov , Avneesh Agrawal
发明人： Ravi Palanki , Jeremy H. Lin , Aamod Khandekar , Alexei Gorokhov , Avneesh Agrawal
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H04L1/0007 , H04L1/0009 , H04L1/0021 , H04L1/0042 , H04L1/1812 , H04L1/1822
摘要： Techniques for encoding and decoding data are described. In an aspect, multiple code rates for a forward error correction (FEC) code may be supported, and a suitable code rate may be selected based on packet size. A transmitter may obtain at least one threshold to use for code rate selection, determine a packet size to use for data transmission, and select a code rate from among the multiple code rates based on the packet size and the at least one threshold. In another aspect, multiple FEC codes of different types (e.g., Turbo, LDPC, and convolutional codes) may be supported, and a suitable FEC code may be selected based on packet size. The transmitter may obtain at least one threshold to use for FEC code selection and may select an FEC code from among the multiple FEC codes based on the packet size and the at least one threshold.
摘要翻译：描述用于编码和解码数据的技术。在一方面，可以支持用于前向纠错（FEC）码的多个码率，并且可以基于分组大小来选择合适的码率。发射机可以获得用于码率选择的至少一个阈值，确定用于数据传输的分组大小，并且基于分组大小和至少一个阈值从多个码率中选择码率。在另一方面，可以支持不同类型的多个FEC码（例如，Turbo，LDPC和卷积码），并且可以基于分组大小来选择合适的FEC码。发射机可以获得用于FEC码选择的至少一个阈值，并且可以基于分组大小和至少一个阈值从多个FEC码中选择FEC码。

40. 发明申请

US20080043879A1 METHODS AND APPARATUS FOR MEASURING, COMMUNICATING AND/OR USING INTERFERENCE INFORMATION 有权
标题翻译：用于测量，通信和/或使用干扰信息的方法和装置
公开(公告)号：US20080043879A1
公开(公告)日：2008-02-21
申请号：US11766353
申请日：2007-06-21
申请人： Alexei Gorokhov , Aamod Khandekar , Ravi Palanki , Rajat Prakash
发明人： Alexei Gorokhov , Aamod Khandekar , Ravi Palanki , Rajat Prakash
IPC分类号： H04L25/03
CPC分类号： H04L27/2613 , H04B17/24 , H04B17/345 , H04B17/382 , H04L1/0026 , H04L5/0023 , H04L5/0053 , H04L5/0091 , H04W16/14 , H04W52/08 , H04W52/24 , H04W52/243 , H04W52/247 , H04W72/082
摘要： Wireless communications methods and apparatus are described. A communications apparatus, e.g., a base station, measures interference information, e.g., other sector interference information. The communications apparatus generates a preamble which includes a plurality of pilot symbols and at least one of the pilot symbols includes interference information. In some embodiments, the preamble is part of a superframe structure, e.g., a recurring superframe structure, including the preamble and a plurality of frames, at least some of the frames used to convey traffic data. The communications apparatus transmits the preamble, thus broadcasting the interference information to access terminals in the vicinity. An access terminal receives the preamble including a plurality of pilot signals, at least one of the pilot signals including interference information. The access terminal recovers the interference information from the received preamble and controls signal transmission based on the recovered interference information.
摘要翻译：描述了无线通信方法和装置。通信装置，例如基站，测量干扰信息，例如其他扇区干扰信息。通信装置生成包括多个导频符号的前导码，并且导频符号中的至少一个包括干扰信息。在一些实施例中，前导码是超帧结构的一部分，例如，包括前导码和多个帧的循环超帧结构，用于传送业务数据的至少一些帧。通信装置发送前导码，从而将干扰信息广播到附近的接入终端。接入终端接收包括多个导频信号的前导码，所述导频信号中的至少一个包括干扰信息。接入终端从接收到的前导码中恢复干扰信息，并根据恢复的干扰信息控制信号传输。

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