公开(公告)号：US07054346B2

公开(公告)日：2006-05-30

申请号：US09850124

申请日：2001-05-07

申请人： Krishna Balachandran ,  Joseph H Kang ,  Kumud K Sanwal ,  James Paul Seymour

发明人： Krishna Balachandran ,  Joseph H Kang ,  Kumud K Sanwal ,  James Paul Seymour

IPC分类号： H04B1/69

CPC分类号： H04B1/7143 ,  H04B2001/7154

摘要： A wireless endpoint employs frequency hopping for communicating signals in a wireless communications system. Over a time period T, the wireless endpoint performs pseudo-random selection of a frequency from a hopping set of N frequencies such that over at least a portion of the time period T, the frequency selection is constrained to less than the N frequencies.

公开(公告)号：US07372823B2

公开(公告)日：2008-05-13

申请号：US10805701

申请日：2004-03-22

申请人： Krishna Balachandran ,  Kenneth C Budka ,  Arnab Das ,  Joseph H Kang

发明人： Krishna Balachandran ,  Kenneth C Budka ,  Arnab Das ,  Joseph H Kang

IPC分类号： H04H1/00

CPC分类号： H04W28/06 ,  H04W4/06

摘要： Rather than transmitting a large full Broadcast-Multicast Services (BCMC) Parameters Message (BSPM) containing a full set of BSPM parameters pertaining to all active BCMC flows within a sector on an infrequent basis, smaller-sized differential or partial BSPMs are instead transmitted. Differential BSPMs contain updated information for existing flows or information for new flows, and because of their smaller size, can be transmitted more frequently than full BSPMs. A mobile terminal receiving a differential BSPM updates the flows with the information contained within the differential BSPM or adds the information contained within the differential BSPM for a new flow. Partial BSPMs divide the flow information contained in a large full BSPM over a plurality of smaller-sized partial BSPMs, which are separately and sequentially transmitted at different times. A mobile terminal receiving these partial BSPMs then reconstructs the full BSPM from a collection of received partial BSPMs.

摘要翻译： 而不是发送一个大量的完整的广播 - 组播服务（BCMC）参数消息（BSPM），其中包含与不频繁的扇区内的所有活动BCMC流有关的全套BSPM参数，更小尺寸的差分或部分BSPM被传输。 差分BSPM包含用于新流的现有流或信息的更新信息，并且由于其较小的尺寸可以比全BSPM更频繁地传输。 接收差分BSPM的移动终端用包含在差分BSPM内的信息更新流，或者添加包含在差分BSPM中的信息用于新流。 部分BSPM将多个较小尺寸的部分BSPM中的大型完整BSPM中包含的流信息进行划分，这些BSPM在不同时间是单独依次发送的。 接收这些部分BSPM的移动终端然后从接收的部分BSPM的集合中重构完整BSPM。

公开(公告)号：US08243779B2

公开(公告)日：2012-08-14

申请号：US11118816

申请日：2005-04-29

申请人： Krishna Balachandran ,  Joseph H Kang

发明人： Krishna Balachandran ,  Joseph H Kang

IPC分类号： H04B1/00

CPC分类号： H04B1/715 ,  H04B1/7143

摘要： In a wireless communications system which hops from frequency to frequency, rather than hopping according to a fixed dwell interval and a pre-determined pseudo-random hop sequence, a quality-based frequency hopping methodology is defined in which a new frequency is hopped to when the channel quality on the current frequency degrades based on the measured value or values of one or more predetermined metrics that are associated with channel quality. When triggered to hop to a next frequency, the hop-to-frequency may be the next frequency in the pseudo-random hop sequence known to both the transmitter and receiver or, in order to improve the reliability of communications, may be determined based on channel quality measurements on different potential hop-to-frequencies.

摘要翻译： 在从频率跳频而不是根据固定的驻留间隔跳频和预定义的伪随机跳频序列的无线通信系统中，定义了基于质量的跳频方法，其中跳频到新的频率 基于与信道质量相关联的一个或多个预定度量的测量值或值，当前频率上的信道质量下降。 当被触发跳到下一个频率时，跳到频率可以是发射机和接收机都已知的伪随机跳序列中的下一个频率，或者为了提高通信的可靠性，可以基于 信道质量测量在不同的潜在跳到频率。

公开(公告)号：US08023552B2

公开(公告)日：2011-09-20

申请号：US11525495

申请日：2006-09-22

申请人： Krishna Balachandran ,  Joseph H Kang

发明人： Krishna Balachandran ,  Joseph H Kang

IPC分类号： H04B1/713

CPC分类号： H04W8/005 ,  H04B1/7143 ,  H04B1/715 ,  H04W84/18

摘要： In an ad hoc wireless network, for purposes of neighbor discovery, a transmitting node transmits a beacon within a timeslot and at a frequency that varies from timeslot-to-timeslot according to one or more associated and known pseudo-random or cyclical frequency hopping sequences. When, during a timeslot, the frequency hopping sequence would select a beacon frequency that if transmitted would violate spectrum policy that is in place during that timeslot, then, during that timeslot, a beacon is not transmitted during that timeslot. During each timeslot, a neighbor receiving node attempts to detect and decode a transmitted beacon at a frequency specified by the frequency hopping sequence that it expects a transmitting node to be using. When a receiving node successfully detects and decodes a beacon transmitted by a transmitting node, neighbor discovery between the transmitting and receiving nodes is achieved.

摘要翻译： 在自组织无线网络中，为了邻居发现的目的，发射节点根据一个或多个相关联和已知的伪随机或循环跳频序列在时隙内和频率上发射信标，时隙到时隙变化 。 当在时隙期间跳频序列将选择一个信标频率，如果传输的信号频率将违反在该时隙期间就位的频谱策略，则在该时隙期间，在该时隙期间不发送信标。 在每个时隙期间，邻居接收节点尝试以期望发射节点正在使用的跳频序列指定的频率来检测和解码所发送的信标。 当接收节点成功地检测并解码由发送节点发送的信标时，实现发送节点与接收节点之间的邻居发现。