公开(公告)号：US20090213766A1

公开(公告)日：2009-08-27

申请号：US12035262

申请日：2008-02-21

申请人： Aik Chindapol ,  Andrea Bacioccola ,  Zexian Li ,  Roberto Albanese

发明人： Aik Chindapol ,  Andrea Bacioccola ,  Zexian Li ,  Roberto Albanese

IPC分类号： H04B7/005

CPC分类号： H04B7/2621 ,  H04W72/005

摘要： Various example embodiments are disclosed herein. According to an example embodiment, an apparatus may include a wireless interface, and a controller, the apparatus being configured to: transmit a downlink subframe of a frequency division duplex (FDD) frame to one or more mobile stations in a wireless network, each wireless station being assigned to one of a plurality of groups, such as, for example, one of group 1 or group 2, the downlink subframe including at least: a group 1 portion and a group 2 portion, wherein a group boundary between the group 1 portion and the group 2 portion of the downlink subframe is variable, at least one of the group 1 portion and the group 2 portion including a group boundary information identifying a location of the group boundary or a location of the group 2 portion in the downlink subframe.

摘要翻译： 本文公开了各种示例性实施例。 根据示例实施例，设备可以包括无线接口和控制器，所述设备被配置为：将频分双工（FDD）帧的下行链路子帧发送到无线网络中的一个或多个移动站，每个无线 站分配给多个组中的一个，例如组1或组2中的一个，下行链路子帧至少包括：组1部分和组2部分，其中组1之间的组边界 部分，下行子帧的组2部分是可变的，组1部分和组2部分中的至少一个部分包括识别组边界的位置的组边界信息或下行链路子帧中的组2部分的位置 。

公开(公告)号：US20090201984A1

公开(公告)日：2009-08-13

申请号：US12306270

申请日：2007-06-21

申请人： Yonggang Du

发明人： Yonggang Du

IPC分类号： H04B1/66 ,  H04L27/28

CPC分类号： H04B7/2621 ,  H04L5/0007 ,  H04L5/0046 ,  H04L25/0226 ,  H04L27/2605 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/265 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04W56/0005

摘要： The present invention relates to a bandwidth asymmetric communication system comprising at least one terminal having an uplink transmission unit (1) for transmitting radio frequency OFDM signals at a radio frequency and an access point having an uplink receiving unit (4) for receiving said radio frequency OFDM signals, said OFDM signals being Orthogonal Frequency Division Multiplex (OFDM) modulated. To reduce the implementation complexity and synchronization requirements a communication system is proposed in which the bandwidth of said uplink transmission unit and of the transmitted radio frequency OFDM signals is smaller than the bandwidth of said uplink receiving unit. Further, a communication system is proposed in which the bandwidth of a downlink transmission unit (7) of the access point is larger than the bandwidth of a downlink receiving unit (11) of the at least one terminal and in which the downlink transmission unit is adapted to generate and transmit radio frequency OFDM signals having a bandwidth that is smaller than the bandwidth of the downlink transmission unit and that is equal to the bandwidth of the downlink receiving unit. Still further, the present invention relates to a communication method, to a terminal and to an access point for use in such a communication system.

摘要翻译： 带宽非对称通信系统技术领域本发明涉及一种带宽非对称通信系统，包括至少一个终端，具有用于以射频发送射频OFDM信号的上行链路传输单元（1）和具有上行接收单元（4）的接入点，用于接收所述射频 OFDM信号，所述OFDM信号是正交频分复用（OFDM）调制的。 为了降低实施复杂度和同步要求，提出了一种通信系统，其中所述上行链路传输单元和发射的射频OFDM信号的带宽小于所述上行链路接收单元的带宽。 此外，提出了一种通信系统，其中接入点的下行链路传输单元（7）的带宽大于所述至少一个终端的下行链路接收单元（11）的带宽，并且其中下行链路传输单元 适于产生和发送具有比下行链路传输单元的带宽小的带宽的等于下行链路接收单元的带宽的射频OFDM信号。 另外，本发明涉及到在这种通信系统中使用的终端和接入点的通信方法。

公开(公告)号：US20090180406A1

公开(公告)日：2009-07-16

申请号：US12227771

申请日：2007-04-27

申请人： Volker Breuer ,  Michael Färber

发明人： Volker Breuer ,  Michael Färber

IPC分类号： H04J3/00 ,  H04J1/00

CPC分类号： H04L5/143 ,  H04B7/2621 ,  H04L5/023 ,  H04W16/14

摘要： Interference is reduced between two radio communication systems. A first radio communication system uses a first and a second frequency ranges which are separated by a duplex gap. A second radio communication system uses a third radio frequency range which forms part of the duplex gap. The first and second radio communication systems exchange information in order to establish an a priori knowledge about a connection on the network side. The a priori knowledge includes the radio transmission resources of the first frequency range provided on the radio communication system side and of the second frequency range and the radio transmission resources of the third frequency range (FB3) desired for call setup and completion. Radio transmission resources are selected depending on the a priori knowledge at the second radio communication system in order to reduce interferences between the first and second radio communication systems.

摘要翻译： 在两个无线电通信系统之间的干扰减少。 第一无线电通信系统使用由双工间隙隔开的第一和第二频率范围。 第二无线电通信系统使用构成双工间隙的一部分的第三射频范围。 第一和第二无线电通信系统交换信息以建立关于网络侧的连接的先验知识。 先验知识包括无线电通信系统侧提供的第一频率范围和第二频率范围的无线电传输资源以及呼叫建立和完成所期望的第三频率范围（FB3）的无线电传输资源。 根据第二无线电通信系统的先验知识来选择无线电传输资源，以便减少第一和第二无线电通信系统之间的干扰。

公开(公告)号：US07483407B2

公开(公告)日：2009-01-27

申请号：US11533888

申请日：2006-09-21

申请人： Daniel J. McDonald ,  Michael C. Petrie

发明人： Daniel J. McDonald ,  Michael C. Petrie

IPC分类号： H04B7/212 ,  H04J4/00

CPC分类号： H04B7/2621 ,  H04B7/2643 ,  H04W72/0446 ,  H04W76/10

摘要： A device receives a communication request for a time division multiple access (TDMA) communication. Upon receipt of the communication request, the device identifies a first communication channel that currently has at least one available TDMA slot and that is currently supporting a greatest number of active TDMA communications amongst a plurality of communication channels. Once the device identifies the first communication channel, the device allocates a first available TDMA slot for the TDMA communication on the first communication channel.

摘要翻译： 一种设备接收用于时分多址（TDMA）通信的通信请求。 在接收到通信请求后，设备识别当前具有至少一个可用TDMA时隙并且当前正在多个通信信道中支持最大数量的有效TDMA通信的第一通信信道。 一旦设备识别出第一通信信道，设备在第一通信信道上为TDMA通信分配第一可用TDMA时隙。

公开(公告)号：US20080240205A1

公开(公告)日：2008-10-02

申请号：US12052129

申请日：2008-03-20

申请人： Masaaki Wakizaka

发明人： Masaaki Wakizaka

IPC分类号： H04B1/713

CPC分类号： H04B7/2621 ,  H04B1/7143 ,  H04W16/14

摘要： A wireless device including a first radio communication portion configured to effect radio communication with a first external communication device while using frequency bands selected one after another from among a group of frequency bands, a field intensity measuring portion which is configured to measure a field intensity value for each of a plurality of frequency bands belonging to at least the group of frequency bands and which is provided in a portion different from the first radio communication portion, and an excluding portion configured to exclude each of the above-indicated plurality of frequency bands for which the measured field intensity value is higher than a predetermined threshold value, from the above-indicated group of frequency bands.

摘要翻译： 一种无线装置，包括第一无线通信部，被配置为在从一组频带中一个接一个地选择的频带的同时进行与第一外部通信装置的无线电通信;场强测量部，被配置为测量场强值 对于属于至少所述频带组的多个频带中的每一个，并且被提供在与所述第一无线电通信部分不同的部分中，并且排除部分被配置为将每个所述多个频带排除 测量的场强度值比预定的阈值高。

公开(公告)号：US20080144542A1

公开(公告)日：2008-06-19

申请号：US11969161

申请日：2008-01-03

申请人： Kenneth L. Stanwood ,  Israel Jay Klein

发明人： Kenneth L. Stanwood ,  Israel Jay Klein

IPC分类号： H04J3/00

CPC分类号： H04B7/2621 ,  H04B7/2656 ,  H04B7/2687

摘要： A method and system for using half-duplex base stations and half-duplex nodes in a Frequency Division Duplexing region to provide wireless connectivity between the half-duplex base stations and customers in multiple sectors of a cell. The method and system can use two physical channels to form two logical channels. Each logical channel shares both physical channels during alternating frames of time. The half-duplex nodes can include a millimeter-wave band frequency synthesizer configured to transmit and receive on different channels to and from the half-duplex base station. Re-use patterns of the physical channels are used for deployment of half-duplex base stations and half-duplex nodes in the FDD region to minimize co-channel interference and interference due to uncorrelated rain fade. Additional methods and systems utilize full-duplex base stations and smart antenna to communicate with the half-duplex nodes.

公开(公告)号：US20080107049A1

公开(公告)日：2008-05-08

申请号：US11969770

申请日：2008-01-04

申请人： Kenneth Stanwood ,  Israel Klein

发明人： Kenneth Stanwood ,  Israel Klein

IPC分类号： H04J3/00

CPC分类号： H04B7/2621 ,  H04B7/2656 ,  H04B7/2687

摘要： A method and system for using half-duplex base stations and half-duplex nodes in a Frequency Division Duplexing region to provide wireless connectivity between the half-duplex base stations and customers in multiple sectors of a cell. The method and system can use two physical channels to form two logical channels. Each logical channel shares both physical channels during alternating frames of time. The half-duplex nodes can include a millimeter-wave band frequency synthesizer configured to transmit and receive on different channels to and from the half-duplex base station. Re-use patterns of the physical channels are used for deployment of half-duplex base stations and half-duplex nodes in the FDD region to minimize co-channel interference and interference due to uncorrelated rain fade. Additional methods and systems utilize full-duplex base stations and smart antenna to communicate with the half-duplex nodes.

摘要翻译： 一种在频分双工区域中使用半双工基站和半双工节点的方法和系统，用于提供半双工基站与小区多个扇区中的客户之间的无线连接。 该方法和系统可以使用两个物理信道来形成两个逻辑信道。 每个逻辑信道在交替的时间帧期间共享物理信道。 半双工节点可以包括毫米波频率频率合成器，其被配置为在与半双工基站的不同信道上进行发送和接收。 物理信道的重用模式用于在FDD区域中部署半双工基站和半双工节点，以使由于不相关的降雨衰落引起的同信道干扰和干扰最小化。 其他方法和系统利用全双工基站和智能天线与半双工节点进行通信。

公开(公告)号：US07336694B2

公开(公告)日：2008-02-26

申请号：US10683891

申请日：2003-10-10

申请人： Arunabha Ghosh

发明人： Arunabha Ghosh

IPC分类号： H04B1/00

CPC分类号： H04B1/713 ,  H04B1/715 ,  H04B7/2621 ,  H04B7/2643 ,  H04B2001/7154 ,  H04N19/63

摘要： A first copy and a second copy of a signal, which comprises a plurality of TDMA frames, are transmitted from the same antenna. Relative to the first copy, the second copy of the signal has a fixed delay and a random phase. The random phase changes from one of the TDMA frames to another of the TDMA frames. A group of hopping carrier frequencies are partitioned into at least two sets of carrier frequencies. The first copy and the second copy of the signal are transmitted using a sequence of the hopping carrier frequencies, wherein consecutive pairs of the hopping carrier frequencies for consecutive pairs of the TDMA frames are not from the same one of the at least two sets.

摘要翻译： 从同一天线发送包括多个TDMA帧的信号的第一副本和第二副本。 相对于第一副本，信号的第二副本具有固定的延迟和随机相位。 随机相位从TDMA帧之一改变到TDMA帧中的另一个。 一组跳频载频被划分成至少两组载波频率。 使用跳频载波频率的序列来发送信号的第一拷贝和第二副本，其中连续的TDMA帧对的连续的跳频载波对不是来自至少两个集合中的相同的一个。

公开(公告)号：US07330703B2

公开(公告)日：2008-02-12

申请号：US10694953

申请日：2003-10-29

申请人： Rudi Verbist

发明人： Rudi Verbist

IPC分类号： H04B1/46

CPC分类号： H04B7/2621

摘要： The present invention relates to a transceiver for bidirectional frequency division multiplexed transmission, a communication system including one or more transceivers. Optionally, the communication system is a communication system for a digital subscriber line. The transceiver comprises transmission means with a voltage source output or a current source output for transmitting data in a transmission frequency range, receiving means for receiving data in a receiving frequency range, and a coupling impedance for connecting the transmission means and the receiving means to a transmission medium. The magnitude of the coupling impedance in the transmission frequency range is smaller than the magnitude of the coupling impedance in the receiving frequency range if the transmission means has a voltage source output and is higher than the magnitude of the coupling impedance in the receiving frequency range if the transmission means has a current source output.

摘要翻译： 本发明涉及一种用于双向频分复用传输的收发信机，包括一个或多个收发信机的通信系统。 可选地，通信系统是用于数字用户线路的通信系统。 收发器包括具有电压源输出的发送装置或用于在发送频率范围内发送数据的电流源输出，用于接收接收频率范围内的数据的接收装置和用于将发送装置和接收装置连接到一个 传输介质。 如果发送装置具有电压源输出并且高于接收频率范围内的耦合阻抗的大小，则传输频率范围内的耦合阻抗的大小小于接收频率范围内的耦合阻抗的大小，如果 传输装置具有电流源输出。

公开(公告)号：US20070189205A1

公开(公告)日：2007-08-16

申请号：US11669269

申请日：2007-01-31

申请人： Stephen Terry ,  Jin Wang ,  Arty Chandra ,  John Chen ,  Guodong Zhang

发明人： Stephen Terry ,  Jin Wang ,  Arty Chandra ,  John Chen ,  Guodong Zhang

IPC分类号： H04Q7/00

CPC分类号： H04W72/0413 ,  H04B7/2621 ,  H04L1/1812 ,  H04L5/0037 ,  H04W56/0045 ,  H04W72/1278 ,  H04W74/04

摘要： In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WRTUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.

摘要翻译： 在包括至少一个演进的节点B（eNB）和多个无线发射/接收单元（WRTU）的无线通信系统中，建立，维护和利用基于非竞争的（NCB）信道。 NCB信道被分配供在系统中的一个或多个WTRU使用以用于各种功能，并且该分配被传送到WTRU。 无线通信系统根据需要分析NCB信道的分配，根据需要重新分配NCB信道。