公开(公告)号：EP2471244B1

公开(公告)日：2016-04-06

申请号：EP10747117.9

申请日：2010-08-11

申请人： QUALCOMM Incorporated

发明人： MICHAELIS, Oliver ,  WALTON, J. Rodney ,  KETCHUM, John W.

IPC分类号： H04L29/08 ,  H04W88/04 ,  H04W88/18 ,  H04W8/00

CPC分类号： H04L29/06326 ,  H04L67/04 ,  H04L67/16 ,  H04L67/18 ,  H04W4/00 ,  H04W48/08 ,  H04W48/16 ,  H04W76/20 ,  H04W92/18

摘要： Certain embodiments of the present disclosure relate to a method and an apparatus for managing and optimizing service discovery in a peer-to-peer (P 2 P) wireless network. Nodes of the P 2 P network advertise their capabilities to their peers in the form of services. Efficient propagation and management of node's services to other nodes is proposed in the present disclosure. An embodiment relates in particular to a method for wireless node in a peer-to-peer (P 2 P) network, comprising: receiving one or more advertisements of services offered by one or more other wireless nodes in the P 2 P network; generating a prioritized list of services, based on one or more services offered by the wireless node and services listed in the received advertisements of services; and distributing the prioritized list of services to other wireless nodes in the P 2 P network.

公开(公告)号：EP1680892B1

公开(公告)日：2013-05-15

申请号：EP04795421.9

申请日：2004-10-15

申请人： QUALCOMM INCORPORATED

发明人： KETCHUM, John W. ,  WALTON, J. Rodney ,  NANDA, Sanjiv

IPC分类号： H04L12/66

CPC分类号： H04W72/1273 ,  H04L29/06 ,  H04L69/08 ,  H04L69/24 ,  H04W28/065

公开(公告)号：EP2025101A2

公开(公告)日：2009-02-18

申请号：EP07784219.3

申请日：2007-05-30

申请人： Qualcomm Incorporated

发明人： SURINENI, Shravan K. ,  WALTON, J. Rodney ,  WALLACE, Mark ,  HOWARD, Steven J.

IPC分类号： H04L12/28 ,  H04B7/06 ,  H04L12/56 ,  H04L1/16

CPC分类号： H04B7/0636 ,  H04B7/0417 ,  H04B7/0634 ,  H04L1/1671

摘要： Techniques for quickly sending feedback information for beamforming are described. A transmitter/initiator sends a first frame comprising training symbols. A receiver/responder receives the first frame, determines the amount of time to generate feedback information, and determines the amount of time to send the feedback information. The receiver then determines the length of a second frame carrying the feedback information based on the amounts of time to generate and send the feedback information. The receiver sends the second frame after waiting a short interframe space (SIFS) period from the end of the first frame, without performing channel access. The receiver generates the feedback information based on the training symbols and sends the information in the second frame when ready. The transmitter receives the second frame, derives at least one steering matrix based on the feedback information, and sends a third frame with the at least one steering matrix.

摘要翻译： 对于快速发送波束形成反馈信息的技术。 的发射机/发起者发送的第一帧包括训练符号。 的接收器/应答器接收第一帧，确定性地雷的时间来生成反馈信息的数量，和确定的地雷的时间来发送所述反馈信息的量。 然后，接收机确定性地雷的第二帧承载基于时间生成并发送的反馈信息的量的反馈信息的长度。 所述接收器从所述第一帧的末尾等待一个短帧间空间（SIFS）期间，不进行信道接入之后发送所述第二帧。 该接收机基因费率基于所述锻炼符号的反馈信息，并发送在第二帧中的信息时，准备好了。 发射机接收第二帧，导出基于所述反馈信息中的至少一个导引矩阵，并发送与所述至少一个导引矩阵的第三帧。

公开(公告)号：EP1829255A2

公开(公告)日：2007-09-05

申请号：EP05824377.5

申请日：2005-11-15

申请人： Qualcomm Incorporated

发明人： WALTON, J. Rodney ,  SURINENI, Shravan K. ,  MEYLAN, Arnaud ,  NANDA, Sanjiv

IPC分类号： H04B17/00 ,  H04L1/00

CPC分类号： H04L1/0015 ,  H04B17/309 ,  H04L1/0002 ,  H04L1/1607 ,  Y02D50/10

摘要： A method for wireless communications, comprising receiving, via a second communication link, feedback for packets sent in a first data transmission via a first communication link; estimating signal-to-noise-and-interference ratio (SNR) of the first communication link based on an estimated SNR of the second communication link, an asymmetric parameter indicating a difference in channel quality between the first and second communication links, and at least one back-off factor used to used to reduce the SNR estimate from an average SNR; adjusting at least one back-off factor based on the received feedback; and selecting a rate for a second data transmission based on the estimated channel quality of the first communication link as well as a corresponding apparatus.

公开(公告)号：EP2494767A1

公开(公告)日：2012-09-05

申请号：EP10778768.1

申请日：2010-10-30

申请人： Qualcomm Incorporated

发明人： WALTON, J. Rodney ,  KETCHUM, John W.

IPC分类号： H04L29/08 ,  H04W48/16 ,  H04W84/18

CPC分类号： H04W48/16 ,  H04L67/104 ,  H04L67/1068 ,  H04L67/16 ,  H04W8/005 ,  H04W84/18

摘要： Certain embodiments of the present disclosure relate to a method for improving the effective coverage of nodes within a peer-to-peer (P2P) wireless network. Collection of nodes of the P2P network can have a larger aggregate coverage footprint than any given single node. This inherent multi-site property of P2P wireless networks can be exploited to provide each node with benefits of multi-user diversity, thus improving discovery of devices in the P2P network.

摘要翻译： 本公开的某些实施例涉及用于改善对等（P2P）无线网络内的节点的有效覆盖的方法。 P2P网络节点的集合可以具有比任何给定的单个节点更大的聚合覆盖范围。 可以利用P2P无线网络的固有多站点属性为每个节点提供多用户分集的优点，从而改善P2P网络中设备的发现。

公开(公告)号：EP2486756A1

公开(公告)日：2012-08-15

申请号：EP10766445.0

申请日：2010-10-06

申请人： Qualcomm Incorporated

发明人： MICHAELIS, Oliver ,  WALTON, J. Rodney ,  KETCHUM, John W.

IPC分类号： H04W48/16

CPC分类号： H04W48/16

摘要： Certain embodiments of the present disclosure relate to a method and an apparatus for registration and service announcements in peer-to-peer wireless networks to increase capacity of such networks. The present disclosure proposes a hybrid registration mechanism allowing a peer-to-peer node to leverage an administrative architecture of a neighboring cellular system.

公开(公告)号：EP1556980B1

公开(公告)日：2012-07-11

申请号：EP03781558.6

申请日：2003-10-24

申请人： QUALCOMM INCORPORATED

发明人： WALTON, J. Rodney ,  KETCHUM, John W. ,  WALLACE, Mark S. ,  HOWARD, Steven J.

IPC分类号： H04L1/00

CPC分类号： H04L5/0048 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0628 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0854 ,  H04B7/0871 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/006 ,  H04L25/0226 ,  H04L25/0248 ,  H04L25/0256 ,  H04L25/03955 ,  H04L25/03968 ,  H04W16/28 ,  H04W52/50

摘要： A user terminal supports multiple spatial multiplexing (SM) modes such as a steered mode and a non-steered mode. For data transmission, multiple data streams are coded and modulated in accordance with their selected rates to obtain multiple data symbol streams. These streams are then spatially processed in accordance with a selected SM mode (e.g., with a matrix of steering vectors for the steered mode and with the identity matrix for the non-steered mode) to obtain multiple transmit symbol streams for transmission from multiple antennas. For data reception, multiple received symbol streams are spatially processed in accordance with the selected SM mode (e.g., with a matrix of eigenvectors for the steered mode and with a spatial filter matrix for the non-steered mode) to obtain multiple recovered data symbol streams. These streams are demodulated and decoded in accordance with their selected rates to obtain multiple decoded data streams.

公开(公告)号：EP1557003A2

公开(公告)日：2005-07-27

申请号：EP03781527.1

申请日：2003-10-24

申请人： Qualcomm, Incorporated

发明人： WALTON, J. Rodney ,  KETCHUM, John W. ,  WALLACE, Mark ,  HOWARD, Steven J.

IPC分类号： H04L12/28 ,  H04Q7/38

CPC分类号： H04W74/0833 ,  H04B7/0413 ,  H04B7/043 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0854 ,  H04L1/0001 ,  H04L1/0009 ,  H04L1/0017 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/0618 ,  H04L1/08 ,  H04L1/16 ,  H04L25/0224 ,  H04L25/0226 ,  H04L25/0242 ,  H04L25/03343 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/261 ,  H04L27/2647 ,  H04L2001/0093 ,  H04W28/20 ,  H04W52/50 ,  H04W74/002 ,  H04W74/08 ,  H04W74/0866 ,  H04W88/06

摘要： Techniques for facilitating random access in wireless multiple-access communication systems. A random access channel (RACH) is defined to comprise a 'fast' RACH (F-RACH) and a 'slow' RACH (S-RACH). The F-RACH and S-RACH can efficiently support user terminals in different operating states and employ different designs. The F-RACH can be used to quickly access the system, and the S-RACH is more robust and can support user terminals in various operating states and conditions. The F-RACH may be used by user terminals that have registered with the system and can compensate for their round trip delays (RTDs) by properly advancing their transmit timing. The S-RACH may be used by user terminals that may or may not have registered with the system, and may or may not be able to compensate for their RTDs. The user terminals may use the F-RACH or S-RACH, or both, to gain access to the system.

公开(公告)号：EP1556984A2

公开(公告)日：2005-07-27

申请号：EP03779427.8

申请日：2003-10-24

申请人： QUALCOMM Incorporated

发明人： WALTON, J. Rodney ,  WALLACE, Mark S.

IPC分类号： H04L1/06 ,  H04L27/00 ,  H04L27/26

CPC分类号： H04L27/261 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0854 ,  H04L1/0017 ,  H04L1/0056 ,  H04L1/0071 ,  H04L25/0224 ,  H04L25/0226 ,  H04L25/0242 ,  H04L25/03343 ,  H04L27/0012 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2647 ,  H04W28/20 ,  H04W52/50

摘要： Techniques for detecting and demodulating data transmissions in wireless communication systems. In one aspect, a decision-directed detector detects for data transmissions in a received signal by utilizing received data symbols as well as received pilot symbols. The decision-directed detector may be designed to perform differential detection in the frequency domain or coherent detection in the time domain, and may be used with multi-carrier modulation (e.g., OFDM). In another aspect, an adaptive threshold is used to perform detection of received data transmissions. A threshold may be determined for each data transmission hypothesized to have been received. The threshold may be computed, for example, based on the signal plus noise energy of the hypothesized data transmission.

公开(公告)号：EP1692829B1

公开(公告)日：2016-05-25

申请号：EP04812250.1

申请日：2004-11-24

申请人： QUALCOMM INCORPORATED

发明人： WALTON, J. Rodney ,  NANDA, Sanjiv

IPC分类号： H04L12/54 ,  H04W8/18 ,  H04W28/18 ,  H04L12/801 ,  H04L12/851 ,  H04L12/859 ,  H04L12/875 ,  H04L12/869 ,  H04L12/911 ,  H04L12/927 ,  H04L12/919 ,  H04L12/813 ,  H04L12/835 ,  H04W72/12

CPC分类号： H04L47/72 ,  H04L47/10 ,  H04L47/14 ,  H04L47/20 ,  H04L47/245 ,  H04L47/2475 ,  H04L47/30 ,  H04L47/50 ,  H04L47/564 ,  H04L47/568 ,  H04L47/60 ,  H04L47/70 ,  H04L47/765 ,  H04L47/803 ,  H04L47/805 ,  H04L47/808 ,  H04L47/824 ,  H04L47/826 ,  H04W8/18 ,  H04W28/18 ,  H04W72/1236