公开(公告)号：US20070005908A1

公开(公告)日：2007-01-04

申请号：US11171155

申请日：2005-06-29

申请人： Sridhar Lakshmanamurthy ,  Mason Cabot ,  Sameer Nanavati ,  Mark Rosenbluth

发明人： Sridhar Lakshmanamurthy ,  Mason Cabot ,  Sameer Nanavati ,  Mark Rosenbluth

IPC分类号： G06F13/28

CPC分类号： G06F13/1663 ,  G06F12/0835

摘要： Method and apparatus to enable I/O agents to perform atomic operations in shared, coherent memory spaces. The apparatus includes an arbitration unit, a host interface unit, and a memory interface unit. The arbitration unit provides an interface to one or more I/O agents that issue atomic transactions to access and/or modify data stored in a shared memory space accessed via the memory interface unit. The host interface unit interfaces to a front-side bus (FSB) to which one or more processors may be coupled. In response to an atomic transaction issued by an I/O agent, the transaction is forked into two interdependent processes. Under one process, an inbound write transaction is injected into the host interface unit, which then drives the FSB to cause the processor(s) to perform a cache snoop. At the same time, an inbound read transaction is injected into the memory interface unit, which retrieves a copy of the data from the shared memory space. If the cache snoop identifies a modified cache line, a copy of that cache line is returned to the I/O agent; otherwise, the copy of the data retrieved from the shared memory space is returned.

摘要翻译： 使I / O代理能够在共享的，一致的存储器空间中执行原子操作的方法和装置。 该装置包括仲裁单元，主机接口单元和存储器接口单元。 仲裁单元向一个或多个发出原子事务的I / O代理提供接口以访问和/或修改存储在经由存储器接口单元访问的共享存储器空间中的数据。 主机接口单元连接到可以耦合一个或多个处理器的前端总线（FSB）。 为了响应由I / O代理发出的原子事务，事务被分成两个相互依赖的进程。 在一个过程中，入站写入事务被注入到主机接口单元中，然后驱动FSB使处理器执行缓存窥探。 同时，入站读取事务被注入到存储器接口单元中，该单元从共享存储器空间检索数据的副本。 如果缓存侦听器识别修改后的高速缓存行，则将该高速缓存行的副本返回给I / O代理; 否则，返回从共享存储空间检索的数据的副本。

公开(公告)号：US07360031B2

公开(公告)日：2008-04-15

申请号：US11171155

申请日：2005-06-29

申请人： Sridhar Lakshmanamurthy ,  Mason B. Cabot ,  Sameer Nanavati ,  Mark Rosenbluth

发明人： Sridhar Lakshmanamurthy ,  Mason B. Cabot ,  Sameer Nanavati ,  Mark Rosenbluth

IPC分类号： G06F12/02

CPC分类号： G06F13/1663 ,  G06F12/0835

摘要： Method and apparatus to enable I/O agents to perform atomic operations in shared, coherent memory spaces. The apparatus includes an arbitration unit, a host interface unit, and a memory interface unit. The arbitration unit provides an interface to one or more I/O agents that issue atomic transactions to access and/or modify data stored in a shared memory space accessed via the memory interface unit. The host interface unit interfaces to a front-side bus (FSB) to which one or more processors may be coupled. In response to an atomic transaction issued by an I/O agent, the transaction is forked into two interdependent processes. Under one process, an inbound write transaction is injected into the host interface unit, which then drives the FSB to cause the processor(s) to perform a cache snoop. At the same time, an inbound read transaction is injected into the memory interface unit, which retrieves a copy of the data from the shared memory space. If the cache snoop identifies a modified cache line, a copy of that cache line is returned to the I/O agent; otherwise, the copy of the data retrieved from the shared memory space is returned.

摘要翻译： 使I / O代理能够在共享的，一致的存储器空间中执行原子操作的方法和装置。 该装置包括仲裁单元，主机接口单元和存储器接口单元。 仲裁单元向一个或多个发出原子事务的I / O代理提供接口以访问和/或修改存储在经由存储器接口单元访问的共享存储器空间中的数据。 主机接口单元与一个或多个处理器可以耦合到的前端总线（FSB）相连接。 为了响应由I / O代理发出的原子事务，事务被分成两个相互依赖的进程。 在一个过程中，入站写入事务被注入到主机接口单元中，然后驱动FSB使处理器执行缓存窥探。 同时，入站读取事务被注入到存储器接口单元中，该单元从共享存储器空间检索数据的副本。 如果缓存侦听器识别修改后的高速缓存行，则将该高速缓存行的副本返回给I / O代理; 否则，返回从共享存储空间检索的数据的副本。

公开(公告)号：US08000411B2

公开(公告)日：2011-08-16

申请号：US11969857

申请日：2008-01-04

申请人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park ,  Chun Woo Lee ,  Tae Ryun Chang

发明人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park ,  Chun Woo Lee ,  Tae Ryun Chang

IPC分类号： H03K9/00 ,  H04L27/00

CPC分类号： H04L1/0054 ,  H04L1/006 ,  H04L1/0072

摘要： A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed. Multiple hypotheses, each corresponding to a different set of a-prior bit values may be evaluated, with the decoded data for a hypothesis selected based on the evaluation output for further processing.

摘要翻译： 提供了一种用于解码无线通信传输的编码数据位的方法和装置。 可以生成对应于编码数据位的已知位值的一组先验位值。 可以从可能的解码路径中去除对应于与先验比特值不一致的解码数据比特的解码路径，并且通过从可能的解码路径的剩余解码路径中选择解码路径来解码编码数据比特， 没有删除。 可以评估每个对应于先前比特值的不同集合的多个假设，其中基于用于进一步处理的评估输出选择的假设的解码数据。

公开(公告)号：US08132069B2

公开(公告)日：2012-03-06

申请号：US11956168

申请日：2007-12-13

申请人： Jong Hyeon Park ,  Je Woo Kim ,  Sameer Nanavati ,  James Y. Hurt

发明人： Jong Hyeon Park ,  Je Woo Kim ,  Sameer Nanavati ,  James Y. Hurt

IPC分类号： G08C25/02 ,  G08C25/00

CPC分类号： H04L1/1845 ,  H04L1/1812 ,  H04L5/0007

摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. The type of HARQ combiner used for a particular channel may depend on a number of selection criteria including the modulation order of the transmission, the number of bits needed for the combined signals, and the headroom in the HARQ buffer. For some embodiments, a combination of different types of HARQ combiners may be designed into a receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques.

摘要翻译： 提供了一种用于在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中的不同阶段组合重传的混合自动重传请求（HARQ）消息的方法和装置。 用于特定信道的HARQ组合器的类型可以取决于包括传输的调制阶数，组合信号所需的位数以及HARQ缓冲器中的余量的选择标准的数量。 对于一些实施例，可以将不同类型的HARQ组合器的组合设计成接收机并且在每个信道的基础上进行选择。 HARQ组合方案的正确选择可以减少所需的HARQ缓冲器大小，并且与常规HARQ组合技术相比可以提供增加的组合增益。

公开(公告)号：US20090175387A1

公开(公告)日：2009-07-09

申请号：US11969857

申请日：2008-01-04

申请人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park ,  Chun Woo Lee ,  Tae Ryun Chang

发明人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park ,  Chun Woo Lee ,  Tae Ryun Chang

IPC分类号： H04L27/06

CPC分类号： H04L1/0054 ,  H04L1/006 ,  H04L1/0072

摘要： A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed. Multiple hypotheses, each corresponding to a different set of a-prior bit values may be evaluated, with the decoded data for a hypothesis selected based on the evaluation output for further processing.

摘要翻译： 提供了一种用于解码无线通信传输的编码数据位的方法和装置。 可以生成对应于编码数据位的已知位值的一组先验位值。 可以从可能的解码路径中去除对应于与先验比特值不一致的解码数据比特的解码路径，并且通过从可能的解码路径的剩余解码路径中选择解码路径来解码编码数据比特， 没有删除。 可以评估每个对应于先前比特值的不同集合的多个假设，其中基于用于进一步处理的评估输出选择的假设的解码数据。

公开(公告)号：US08194588B2

公开(公告)日：2012-06-05

申请号：US11955645

申请日：2007-12-13

申请人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  James Y. Hurt

发明人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  James Y. Hurt

IPC分类号： H04W4/00

CPC分类号： H04L1/1845 ,  H04L1/1812

摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages divided into coding blocks in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. According to such a coding-block-based HARQ combining scheme, the quality of each coding block may be compared to a threshold to determine whether the decoded bits or the HARQ combined signal should be saved for each coding block for subsequent HARQ iterations. In addition to reducing the required HARQ buffer size while preserving the combining gain, coding-block-based HARQ combining may also provide fast decoding and reduced power consumption when compared to conventional HARQ combining techniques.

摘要翻译： 提供了一种用于组合在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中被划分为编码块的重传的混合自动重复请求（HARQ）消息的方法和装置。 根据这样的基于编码块的HARQ组合方案，可以将每个编码块的质量与阈值进行比较，以确定是否应为每个编码块保存解码比特或HARQ组合信号以用于后续HARQ迭代。 除了减少所需的HARQ缓冲器大小同时保持组合增益之外，与常规HARQ组合技术相比，基于编码块的HARQ组合还可以提供快速解码和降低的功耗。

公开(公告)号：US20090158110A1

公开(公告)日：2009-06-18

申请号：US11956278

申请日：2007-12-13

申请人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park

发明人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park

IPC分类号： H04L1/18 ,  G06F11/14

CPC分类号： H04L1/1845 ,  H04L1/1812

摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an OFDM/OFDMA receiver are provided. A combination of different types of HARQ combiners may be designed into the receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques. Furthermore, the HARQ combiner type may be dynamically selected through forward and reverse shifting between the different types of HARQ combining schemes in an effort to decrease the bit error ratio (BER) without saturating the HARQ buffer.

摘要翻译： 提供了一种用于在OFDM / OFDMA接收机中的不同阶段组合重传的混合自动重传请求（HARQ）消息的方法和装置。 可以将不同类型的HARQ组合器的组合设计到接收机中并且在每个信道的基础上进行选择。 HARQ组合方案的正确选择可以减少所需的HARQ缓冲器大小，并且与常规HARQ组合技术相比可以提供增加的组合增益。 此外，可以通过在不同类型的HARQ组合方案之间的正向和反向移位来动态地选择HARQ组合器类型，以努力降低误码率（BER）而不使HARQ缓冲器饱和。

公开(公告)号：US08161342B2

公开(公告)日：2012-04-17

申请号：US11956278

申请日：2007-12-13

申请人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park

发明人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park

IPC分类号： G08C25/02 ,  G08C25/00

CPC分类号： H04L1/1845 ,  H04L1/1812

摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an OFDM/OFDMA receiver are provided. A combination of different types of HARQ combiners may be designed into the receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques. Furthermore, the HARQ combiner type may be dynamically selected through forward and reverse shifting between the different types of HARQ combining schemes in an effort to decrease the bit error ratio (BER) without saturating the HARQ buffer.

摘要翻译： 提供了一种用于在OFDM / OFDMA接收机中的不同阶段组合重传的混合自动重传请求（HARQ）消息的方法和装置。 可以将不同类型的HARQ组合器的组合设计到接收机中并且在每个信道的基础上进行选择。 HARQ组合方案的正确选择可以减少所需的HARQ缓冲器大小，并且与常规HARQ组合技术相比可以提供增加的组合增益。 此外，可以通过在不同类型的HARQ组合方案之间的正向和反向移位来动态地选择HARQ组合器类型，以努力降低误码率（BER）而不使HARQ缓冲器饱和。

公开(公告)号：US20090158109A1

公开(公告)日：2009-06-18

申请号：US11956168

申请日：2007-12-13

申请人： Jong Hyeon Park ,  Je Woo Kim ,  Sameer Nanavati ,  James Y. Hurt

发明人： Jong Hyeon Park ,  Je Woo Kim ,  Sameer Nanavati ,  James Y. Hurt

IPC分类号： G08C25/02

CPC分类号： H04L1/1845 ,  H04L1/1812 ,  H04L5/0007

摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. The type of HARQ combiner used for a particular channel may depend on a number of selection criteria including the modulation order of the transmission, the number of bits needed for the combined signals, and the headroom in the HARQ buffer. For some embodiments, a combination of different types of HARQ combiners may be designed into a receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques.

摘要翻译： 提供了一种用于在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中的不同阶段组合重传的混合自动重传请求（HARQ）消息的方法和装置。 用于特定信道的HARQ组合器的类型可以取决于包括传输的调制阶数，组合信号所需的位数以及HARQ缓冲器中的余量的选择标准的数量。 对于一些实施例，可以将不同类型的HARQ组合器的组合设计成接收机并且在每个信道的基础上进行选择。 HARQ组合方案的正确选择可以减少所需的HARQ缓冲器大小，并且与常规HARQ组合技术相比可以提供增加的组合增益。

公开(公告)号：US20090154392A1

公开(公告)日：2009-06-18

申请号：US11955645

申请日：2007-12-13

申请人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  James Y. Hurt

发明人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  James Y. Hurt

IPC分类号： H04Q7/00

CPC分类号： H04L1/1845 ,  H04L1/1812

摘要： A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages divided into coding blocks in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. According to such a coding-block-based HARQ combining scheme, the quality of each coding block may be compared to a threshold to determine whether the decoded bits or the HARQ combined signal should be saved for each coding block for subsequent HARQ iterations. In addition to reducing the required HARQ buffer size while preserving the combining gain, coding-block-based HARQ combining may also provide fast decoding and reduced power consumption when compared to conventional HARQ combining techniques.

摘要翻译： 提供了一种用于组合在正交频分复用（OFDM）/正交频分多址（OFDMA）接收机中被划分为编码块的重传的混合自动重复请求（HARQ）消息的方法和装置。 根据这样的基于编码块的HARQ组合方案，可以将每个编码块的质量与阈值进行比较，以确定是否应为每个编码块保存解码比特或HARQ组合信号以用于后续HARQ迭代。 除了减少所需的HARQ缓冲器大小同时保持组合增益之外，与常规HARQ组合技术相比，基于编码块的HARQ组合还可以提供快速解码和降低的功耗。