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41.发明申请公开(公告)号：US20050157805A1
公开(公告)日：2005-07-21
申请号：US11009200
申请日：2004-12-09
申请人： Jay Walton , John Ketchum , Mark Wallace , Steven Howard
发明人： Jay Walton , John Ketchum , Mark Wallace , Steven Howard
CPC分类号： H04J11/003 , C07K2317/22 , C07K2317/622 , H04B7/0417 , H04B7/0626 , H04L1/0026 , H04L1/06
摘要： For data transmission with spatial spreading, a transmitting entity (1) encodes and modulates each data packet to obtain a corresponding data symbol block, (2) multiplexes data symbol blocks onto NS data symbol streams for transmission on NS transmission channels of a MIMO channel, (3) spatially spreads the NS data symbol streams with steering matrices, and (4) spatially processes NS spread symbol streams for full-CSI transmission on NS eigenmodes or partial-CSI transmission on NS spatial channels of the MIMO channel. A receiving entity (1) obtains NR received symbol streams via NR receive antennas, (2) performs receiver spatial processing for full-CSI or partial-CSI transmission to obtain NS detected symbol streams, (3) spatially despreads the NS detected symbol streams with the same steering matrices used by the transmitting entity to obtain NS recovered symbol streams, and (4) demodulates and decodes each recovered symbol block to obtain a corresponding decoded data packet.
摘要翻译： 对于具有空间扩展的数据传输，发送实体（1）对每个数据分组进行编码和调制，以获得相应的数据符号块，（2）将数据符号块复用到N个S / S数据符号流上以便传输 （3）用导向矩阵空间扩展N S S个数据符号流，并且（4）空间地处理N S S个数据符号流， / SUB>扩展符号流，用于N信道本征模式上的全CSI传输或MIMO信道的N SUB空间信道上的部分CSI传输。 接收实体（1）通过N个N个接收天线获得接收到的N N个符号流，（2）执行用于全CSI或部分CSI传输的接收机空间处理，以获得 （3）使用发送实体使用的相同导向矩阵空间地解扩N N S S个检测到的符号流，以获得N N个S＆lt; S＆lt; S＆lt; （4）对每个恢复的符号块进行解调和解码以获得对应的解码数据分组。
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42.发明申请Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information 有权利用信道状态信息在多输入多输出（MIMO）通信系统中处理数据的方法和装置公开(公告)号：US20050002468A1
公开(公告)日：2005-01-06
申请号：US10903813
申请日：2004-07-29
申请人： Jay Walton , Mark Wallace , John Ketchum , Steven Howard
发明人： Jay Walton , Mark Wallace , John Ketchum , Steven Howard
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0689 , H04B7/0697 , H04B7/0854 , H04B7/10 , H04B7/12 , H04L1/0009 , H04L1/0026 , H04L1/0048 , H04L1/005 , H04L1/0071
摘要： Techniques to “successively” process received signals at a receiver unit in a MIMO system to recover transmitted data, and to “adaptively” process data at a transmitter unit based on channel state information available for the MIMO channel. A successive cancellation receiver processing technique is used to process the received signals and performs a number of iterations to provide decoded data streams. For each iteration, input (e.g., received) signals for the iteration are processed to provide one or more symbol streams. One of the symbol streams is selected and processed to provide a decoded data stream. The interference due to the decoded data stream is approximately removed (i.e., canceled) from the input signals provided to the next iteration. The channel characteristics are estimated and reported back to the transmitter system and used to adjust (i.e., adapt) the processing (e.g., coding, modulation, and so on) of data prior to transmission.
摘要翻译： 在MIMO系统的接收机单元处“接收”处理接收信号以恢复所发送的数据，并且基于可用于MIMO信道的信道状态信息“自适应地”处理发射机单元处的数据的技术。 使用连续的取消接收器处理技术来处理所接收的信号并执行多次迭代以提供解码的数据流。 对于每次迭代，处理用于迭代的输入（例如，接收的）信号以提供一个或多个符号流。 选择并处理符号流中的一个以提供解码的数据流。 从解码的数据流引起的干扰从提供给下一次迭代的输入信号中大致去除（即，取消）。 信道特性被估计并报告给发射机系统，并用于在传输之前调整（即，适应）数据的处理（例如，编码，调制等）。
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公开(公告)号：US20060063494A1
公开(公告)日：2006-03-23
申请号：US11075005
申请日：2005-03-07
申请人： Xiangdon Zhang , Jay Walton
发明人： Xiangdon Zhang , Jay Walton
摘要： A multi-antenna station has multiple remote front-ends coupled to multiple antennas. Each remote front-end includes a power amplifier (PA), a low noise amplifier (LNA), and first and second coupling units. On the transmit path, a first RF signal is received via a first port, routed by the first coupling unit to the power amplifier, amplified to obtain the desired output power level, and routed by the second coupling unit to a second port for transmission via the antenna. On the receive path, a second RF signal is received via the second port, routed by the second coupling unit to the LNA, amplified to obtain a higher signal level, and routed by the first coupling unit to the first port for transmission to the transceiver.
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公开(公告)号：US20050192037A1
公开(公告)日：2005-09-01
申请号：US11044539
申请日：2005-01-26
申请人： Sanjiv Nanda , Jay Walton
发明人： Sanjiv Nanda , Jay Walton
CPC分类号： H04W74/04 , H04W72/1231 , H04W72/1278 , H04W84/18
摘要： An ad hoc network with distributed hierarchical scheduling is disclosed. In one aspect, stations in a network mesh detect interfering neighbor stations and form interference lists. Stations transmit their interference lists. Scheduling stations schedule allocations for child stations in response to interference lists, received remote allocations, or a combination thereof. Coordination messages are transmitted including frame structure, allocations, and interference lists, among others. In another aspect, an ad hoc mesh network may be organized into a tree topology. In an example wireless backhaul network, this matches traffic flow. Distributed, hierarchical scheduling is provided where parents schedule communication with children while respecting already scheduled transmissions to/from interferers and to/from interferers of their respective children. Procedures to construct interference constraints for distributed, hierarchical scheduling are described, resulting in efficient scheduling and reuse in an ad hoc wireless network, without centralized scheduling. Various other aspects are also disclosed.
摘要翻译： 公开了一种具有分布式分层调度的自组织网络。 在一个方面，网络网络中的站检测干扰相邻站并形成干扰列表。 车站发送干扰列表。 调度站响应于干扰列表，接收的远程分配或其组合来调度子站的分配。 发送协调消息，包括帧结构，分配和干扰列表等。 在另一方面，可以将自组织网状网络组织成树形拓扑。 在无线回程网络的示例中，这匹配了流量。 提供了分布式的分层调度，其中父母调度与孩子的通信，同时尊重已经调度的传输到/来自干扰源和/或来自其相应子项的干扰。 描述了为分布式分层调度构建干扰约束的过程，从而在ad hoc无线网络中进行有效的调度和重用，而无需集中调度。 还公开了各种其它方面。
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公开(公告)号：US20050157811A1
公开(公告)日：2005-07-21
申请号：US11081260
申请日：2005-03-15
申请人： Bjorn Bjerke , John Ketchum , Jay Walton
发明人： Bjorn Bjerke , John Ketchum , Jay Walton
CPC分类号： H04L1/005 , H04B7/0413 , H04B7/0854 , H04L1/0003 , H04L1/0009 , H04L1/0059 , H04L1/0066 , H04L1/0071 , H04L1/06 , H04L5/0023 , H04L25/03171 , H04L25/03305 , H04L25/03891 , H04L25/067 , H04L27/2647
摘要： Techniques to iteratively detect and decode data transmitted in a wireless (e.g., MIMO-OFDM) communication system. The iterative detection and decoding is performed by iteratively passing soft (multi-bit) “a priori” information between a detector and a decoder. The detector receives modulation symbols, performs a detection function that is complementary to the symbol mapping performed at the transmitter, and provides soft-decision symbols for transmitted coded bits. “Extrinsic information” in the soft-decision symbols is then decoded by the decoder to provide its extrinsic information, which comprises the a priori information used by the detector in the detection process. The detection and decoding may be iterated a number of times. The soft-decision symbols and the a priori information may be represented using log-likelihood ratios (LLRs). Techniques are provided to reduce the computational complexity associated with deriving the LLRs, including interference nulling to isolate each transmitted signal and “dual-maxima” approximation.
摘要翻译： 用于迭代地检测和解码在无线（例如，MIMO-OFDM）通信系统中发送的数据的技术。 迭代检测和解码通过在检测器和解码器之间迭代地传递软（多位）“先验”信息来执行。 检测器接收调制符号，执行与在发射机处执行的符号映射互补的检测功能，并为发送的编码比特提供软判决符号。 软判决符号中的“外在信息”然后由解码器解码以提供其外在信息，其包括检测器在检测过程中使用的先验信息。 可以重复检测和解码多次。 可以使用对数似然比（LLR）来表示软判决符号和先验信息。 提供技术以减少与导出LLR相关联的计算复杂度，包括干扰归零以隔离每个发射信号和“双最大值”近似。
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公开(公告)号：US20050135284A1
公开(公告)日：2005-06-23
申请号：US10964321
申请日：2004-10-13
申请人： Sanjiv Nanda , Arnaud Meylan , Jay Walton
发明人： Sanjiv Nanda , Arnaud Meylan , Jay Walton
CPC分类号： H04L29/06068 , H04L1/0025 , H04L1/0073 , H04L1/0078 , H04L1/0618 , H04L1/1621 , H04L1/1671 , H04L12/403 , H04L12/4633 , H04L29/06 , H04L69/08 , H04L69/24 , H04W28/04 , H04W28/06 , H04W48/08 , H04W52/383 , H04W74/06
摘要： Embodiments disclosed herein for MAC processing for efficient use of high throughput systems and that may be backward compatible with various types of legacy systems. In one aspect, a data transmission structure comprises a consolidated poll and one or more frames transmitted in accordance with the consolidated poll. In another aspect, a Time Division Duplexing (TDD) data transmission structure comprises a pilot, a consolidated poll, and zero or more access point to remote station frames in accordance with the consolidated poll. In one aspect, frames are transmitted sequentially with no or substantially reduced interframe spacing. In another aspect, a guard interframe spacing may be introduced between frames transmitted from different sources, or with substantially different power levels. In another aspect, a single preamble is transmitted in association with one or more frames. In another aspect, a block acknowledgement is transmitted subsequent to the transmission of one or more sequential frames.
摘要翻译： 本文公开的用于MAC处理的实施例用于高吞吐量系统的有效使用并且可以向后兼容各种类型的传统系统。 一方面，数据传输结构包括合并轮询和根据综合民意调查发送的一个或多个帧。 另一方面，根据综合民意调查，时分双工（TDD）数据传输结构包括导频，综合轮询以及到远程站帧的零个或多个接入点。 在一个方面，帧以没有或基本上减小的帧间间隔顺序传送。 在另一方面，可以在从不同源发送的帧之间或具有基本上不同的功率电平的情况下引入保护帧间间隔。 在另一方面，与一个或多个帧相关联地发送单个前同步码。 在另一方面，在发送一个或多个顺序帧之后发送块确认。
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47.发明申请Forward link handoff for wireless communication systems with OFDM forward link and CDMA reverse link 有权具有OFDM正向链路和CDMA反向链路的无线通信系统的前向链路切换公开(公告)号：US20050083888A1
公开(公告)日：2005-04-21
申请号：US10744373
申请日：2003-12-22
申请人： John Smee , Jay Walton , Durga Malladi , Serge Willenegger
发明人： John Smee , Jay Walton , Durga Malladi , Serge Willenegger
CPC分类号： H04W36/30
摘要： A method and apparatus for performing handoff in a wireless communication system with multi-carrier modulation (MCM) for a forward link and CDMA for a reverse link. In one embodiment, a method of performing handoff on the forward link for a terminal is provided in which signal quality of pilots received by the terminal from a plurality of base stations in the system is determined. A particular base station for subsequent data transmission on the forward link to the terminal is selected based on the signal quality determined for the plurality of base stations. A request to be handed off to the particular base station is initiated if the particular base station is different than a currently selected base station.
摘要翻译： 一种用于在用于前向链路的多载波调制（MCM）和用于反向链路的CDMA的无线通信系统中执行切换的方法和装置。 在一个实施例中，提供了一种在终端的前向链路上执行切换的方法，其中终端从系统中的多个基站接收的导频的信号质量被确定。 基于为多个基站确定的信号质量来选择用于在到终端的前向链路上的后续数据传输的特定基站。 如果特定基站不同于当前选择的基站，则启动要切换到特定基站的请求。
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48.发明申请公开(公告)号：US20070037603A1
公开(公告)日：2007-02-15
申请号：US11502091
申请日：2006-08-09
IPC分类号： H04M1/00
摘要： A wireless communication method, apparatus, and system for simultaneous communication of a wide area network with a wireless local area network. The system having the wide area network configured to transmit control signals, the wireless local area network configured to transmit data signals, and a mobile station configured to receive control signals from the wide area network and data signals from the wireless local area network.
摘要翻译： 一种用于同时通信广域网与无线局域网的无线通信方法，装置和系统。 具有被配置为发送控制信号的广域网的系统，被配置为发送数据信号的无线局域网，以及被配置为从广域网接收控制信号的移动站和来自无线局域网的数据信号。
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公开(公告)号：US20060227801A1
公开(公告)日：2006-10-12
申请号：US11088382
申请日：2005-03-23
申请人： Sanjiv Nanda , Jay Walton
发明人： Sanjiv Nanda , Jay Walton
IPC分类号： H04L12/413 , H04J3/02
摘要： An IBSS that allows token passing for round-robin service of QoS flows is disclosed (an RRBSS). The RRBSS permits low-latency, reduced contention, distributed scheduling useful in any ad hoc network, but particularly suitable for high data rates. Distributed scheduled access is provided for flows through a round-robin token passing service discipline. STAs follow a round-robin order, or list, and are able to communicate with round-robin transmit opportunities during a defined period. Each STA in the list transmits a respective token to transfer access to the shared medium to the next STA in the RR List. The sequence is terminated with an end token. STAs maintain station identifiers and list updates are maintained with a sequence identifier. Techniques are disclosed to add and remove STAs to the sequence;s establish connectivity lists (receive and forward), and maintain other sequence parameters such as bandwidth management and TXOP duration. Various other aspects are also disclosed.
摘要翻译： 公开了一种允许令牌通过QoS流的循环服务的IBSS（RRBSS）。 RRBSS允许低延迟，减少的争用，在任何自组织网络中有用的分布式调度，但特别适用于高数据速率。 通过循环令牌传递服务规则为流提供分布式调度访问。 STA按照循环顺序或列表进行操作，并能够在定义的时间段内与循环发送机会进行通信。 列表中的每个STA发送相应的令牌以将对共享介质的访问传送到RR列表中的下一个STA。 该序列以终止令牌终止。 STA维护站标识符，列表更新使用序列标识符进行维护。 披露技术来添加和删除STA的序列;建立连接列表（接收和转发），并保持其他序列参数，如带宽管理和TXOP持续时间。 还公开了各种其它方面。
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公开(公告)号：US20060159003A1
公开(公告)日：2006-07-20
申请号：US11253358
申请日：2005-10-18
申请人： Sanjiv Nanda , Shravan Surineni , Jay Walton
发明人： Sanjiv Nanda , Shravan Surineni , Jay Walton
IPC分类号： H04J11/00
摘要： Embodiments for bandwidth allocation methods, detecting interference with other systems, and/or redeploying in alternate bandwidth are described. Higher bandwidth channels may be deployed at channel boundaries, which are a subset of those for lower bandwidth channels, and may be restricted from overlapping. Interference may be detected on primary, secondary, or a combination of channels, and may be detected in response to energy measurements of the various channels. When interference is detected, a higher bandwidth Basic Service Set (BSS) may be relocated to an alternate channel, or may have its bandwidth reduced to avoid interference. Interference may be detected based on energy measured on the primary or secondary channel, and/or a difference between the two. An FFT may be used in energy measurement in either or both of the primary and secondary channels. Stations may also monitor messages from alternate systems to make channel allocation decisions. Various other aspects are also presented.
摘要翻译： 描述带宽分配方法的实施例，检测与其他系统的干扰和/或以备用带宽重新部署。 较高带宽信道可以部署在信道边界，其是用于较低带宽信道的子集，并且可以被限制为重叠。 可以在主要，次要或信道的组合上检测干扰，并且可以响应于各种信道的能量测量来检测干扰。 当检测到干扰时，较高带宽的基本业务集（BSS）可以被重定位到备用信道，或者可以减少其带宽以避免干扰。 可以基于在主要或次要信道上测量的能量和/或两者之间的差异来检测干扰。 可以在主要和次要信道中的一个或两个中的能量测量中使用FFT。 站点还可以监视来自备用系统的消息以进行信道分配决定。 还提出了各种其他方面。
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