Method and apparatus for allocating a pilot signal adapted to the channel characteristics
    1.
    发明申请
    Method and apparatus for allocating a pilot signal adapted to the channel characteristics 有权
    用于分配适合于信道特性的导频信号的方法和装置

    公开(公告)号:US20110075625A1

    公开(公告)日:2011-03-31

    申请号:US12926511

    申请日:2010-11-23

    IPC分类号: H04W4/00

    摘要: A set of different pilot structures are designed for use in different environments and/or different user behaviours that are expected to occur in a cell. The radio conditions for a user are estimated. Each user is then assigned an area (108A-E) in resource space for its communication, which has a suitable pilot configuration. In one embodiment, the entire resource space is provided with different pilot structures in different parts (110A-D) In advance and allocation of resources to the users are then performed in order to match estimated radio conditions to the provided pilot structure. In another embodiment, allocation is performed first, and then the actual pilot structure is adapted within the allocated resource space area to suit the environmental conditions.

    摘要翻译: 一组不同的导频结构被设计用于不同环境和/或预期在小区中发生的不同用户行为。 估计用户的无线电条件。 然后,在用于其通信的资源空间中为每个用户分配一个区域(108A-E),该区域具有合适的导频配置。 在一个实施例中,预先为不同部分(110A-D)提供不同的导频结构,然后执行向用户的资源分配,以将估计的无线电条件与所提供的导频结构相匹配。 在另一个实施例中,首先执行分配,然后在所分配的资源空间区域内适配实际的导频结构以适应环境条件。

    Method and apparatus for allocating a pilot signal adapted to the channel characteristics
    2.
    发明授权
    Method and apparatus for allocating a pilot signal adapted to the channel characteristics 有权
    用于分配适合于信道特性的导频信号的方法和装置

    公开(公告)号:US07904093B2

    公开(公告)日:2011-03-08

    申请号:US10582478

    申请日:2004-12-01

    IPC分类号: H04W72/00

    摘要: A set of different pilot structures are designed for use in different environments and/or different user behaviours that are expected to occur in a cell. The radio conditions for a user are estimated. Each user is then assigned an area (108A-E) in resource space for its communication, which has a suitable pilot configuration. In one embodiment, the entire resource space is provided with different pilot structures in different parts (110A-D) In advance and allocation of resources to the users are then performed in order to match estimated radio conditions to the provided pilot structure. In another embodiment, allocation is performed first, and then the actual pilot structure is adapted within the allocated resource space area to suit the environmental conditions.

    摘要翻译: 一组不同的导频结构被设计用于不同环境和/或预期在小区中发生的不同用户行为。 估计用户的无线电条件。 然后,在用于其通信的资源空间中为每个用户分配一个区域(108A-E),该区域具有合适的导频配置。 在一个实施例中,整个资源空间在不同部分(110A-D)中设置有不同的导频结构。 然后提前向用户分配资源,以便将估计的无线电条件与所提供的导频结构相匹配。 在另一个实施例中,首先执行分配,然后在所分配的资源空间区域内适配实际的导频结构以适应环境条件。

    Method and apparatus for allocating a pilot signal adapted to the channel characteristics
    4.
    发明申请
    Method and apparatus for allocating a pilot signal adapted to the channel characteristics 有权
    用于分配适合于信道特性的导频信号的方法和装置

    公开(公告)号:US20070104174A1

    公开(公告)日:2007-05-10

    申请号:US10582478

    申请日:2004-12-01

    IPC分类号: H04J1/00

    摘要: A set of different pilot structures are designed for use in different environments and/or different user behaviours that are expected to occur in a cell. The radio conditions for a user are estimated. Each user is then assigned an area (108A-E) in resource space for its communication, which has a suitable pilot configuration. In one embodiment, the entire resource space is provided with different pilot structures in different parts (110A-D) In advance and allocation of resources to the users are then performed in order to match estimated radio conditions to the provided pilot structure. In another embodiment, allocation is performed first, and then the actual pilot structure is adapted within the allocated resource space area to suit the environmental conditions.

    摘要翻译: 一组不同的导频结构被设计用于不同环境和/或预期在小区中发生的不同用户行为。 估计用户的无线电条件。 然后,在用于其通信的资源空间中为每个用户分配一个区域(108A-E),其具有合适的导频配置。 在一个实施例中,整个资源空间在不同部分(110A-D)中设置有不同的导频结构。 然后提前向用户分配资源,以便将估计的无线电条件与所提供的导频结构相匹配。 在另一个实施例中,首先执行分配,然后在所分配的资源空间区域内适配实际的导频结构以适应环境条件。

    Method, system and device for providing a robust wireless connection
    6.
    发明申请
    Method, system and device for providing a robust wireless connection 审中-公开
    用于提供鲁棒无线连接的方法,系统和设备

    公开(公告)号:US20090258639A1

    公开(公告)日:2009-10-15

    申请号:US10583452

    申请日:2004-12-02

    IPC分类号: H04W40/00

    摘要: A system and a method for wireless linking in a cellular communication system are disclosed such that a mobile station is maintained in simultaneous communication with at least a first node and a second node for access to the cellular communication system. Information going to and from the first node is not identical to the information going to and from the second node. In one embodiment the second node, or secondary access point is a relay node forwarding received information to and from the first node, or primary access point. In another embodiment the second node is another mobile station performing a direct mobile-to-mobile communication (MS-to-MS). In still an embodiment a first wireless link to the first node is for control information only. In still a further embodiment a second wireless link to the second node is only for communication of information from the mobile station or only for communication of information to the mobile station.

    摘要翻译: 公开了一种用于蜂窝通信系统中的无线链接的系统和方法,使得移动台与至少第一节点和第二节点保持同时通信以访问蜂窝通信系统。 进出第一个节点的信息与进入第二个节点的信息不同。 在一个实施例中,第二节点或辅助接入点是将接收的信息转发到第一节点或主接入点的中继节点。 在另一个实施例中,第二节点是执行直接移动到移动通信(MS到MS)的另一个移动站。 在另一实施例中,到第一节点的第一无线链路仅用于控制信息。 在又一个实施例中,到第二节点的第二无线链路仅用于来自移动台的信息的通信,或仅用于向移动台通信信息。

    Random access in a mobile telecommunications system
    7.
    发明授权
    Random access in a mobile telecommunications system 有权
    移动电信系统中的随机接入

    公开(公告)号:US06535547B1

    公开(公告)日:2003-03-18

    申请号:US09324372

    申请日:1999-06-02

    IPC分类号: H04L2730

    摘要: A method for improving the performance of a random access communications system in a variable radio environment is disclosed, whereby at least one valid set of burst signatures is used for transmission by one or more mobile stations. Each set includes at least one signature with a different signature-length than the signatures in other sets. The different signature-lengths can be optimized for the operational environments involved (e.g., longer signatures for slower-moving mobile stations, and shorter signatures for high-speed mobile stations). Alternatively, at least one differentially-encoded signature is used for random access transmissions, in order to reduce the radio channel's sensitivity to large doppler spreads and frequency errors.

    摘要翻译: 公开了一种用于在可变无线电环境中改善随机接入通信系统的性能的方法,由此至少一个有效的突发特征集合被一个或多个移动台用于传输。 每个集合包括与其他集合中的签名不同的签名长度的至少一个签名。 不同的签名长度可以针对所涉及的操作环境进行优化(例如,较慢移动的移动站的签名较长,以及用于高速移动站的较短的签名)。 或者,至少一个差分编码的签名用于随机接入传输,以便减少无线电信道对大多普勒扩展和频率误差的敏感性。

    Wireless multicarrier system with subcarriers reserved for communication between unsynchronized nodes
    8.
    发明授权
    Wireless multicarrier system with subcarriers reserved for communication between unsynchronized nodes 失效
    具有保留用于在不同步节点之间通信的副载波的无线多载波系统

    公开(公告)号:US07616556B2

    公开(公告)日:2009-11-10

    申请号:US10581995

    申请日:2004-12-01

    IPC分类号: H04J11/00

    摘要: In a system applying orthogonal frequency division multiplexing, OFDM, a number of carriers are reserved for communication between unsynchronized nodes (N1, N2). At least one such reserved carrier is assigned to each base station. A sinusoidal signal is transmitted on this reserved carrier during a time period at least equal to two consecutive OFDM symbols. The unsynchronized receiver detects the sinusoidal signal during one of two consecutive OFDM symbol time periods. The existence, the frequency and the signal power of the signal give information about the existence and identity of the transmitter. Also, estimates of relative velocities and distances can be deduced. In preferred embodiments, the sinusoidal signal can also be used to transmit further information by using signal modulation or coding that is independent of the absolute signal phase.

    摘要翻译: 在应用正交频分复用的OFDM系统中,为了在不同步节点(N1,N2)之间进行通信,保留了多个载波。 至少一个这样的预留载体被分配给每个基站。 在至少等于两个连续OFDM符号的时间周期内,在该保留载波上发送正弦信号。 在两个连续的OFDM符号时间段之一期间,非同步接收机检测正弦信号。 信号的存在,频率和信号功率给出关于发射机的存在和身份的信息。 此外,可以推导出相对速度和距离的估计。 在优选实施例中,正弦信号还可以用于通过使用独立于绝对信号相位的信号调制或编码来发送进一步的信息。

    Subcarrier spacing identification
    9.
    发明授权
    Subcarrier spacing identification 有权
    副载波间距识别

    公开(公告)号:US09137075B2

    公开(公告)日:2015-09-15

    申请号:US11943440

    申请日:2007-11-20

    摘要: A cellular communications system that utilizes OFDM in its radio interface is capable of utilizing either a first subcarrier spacing or a second subcarrier spacing. Which of these is presently in use is indicated by generating a first type of synchronization signal in response to the first subcarrier spacing presently being in use, and generating a second type of synchronization signal in response to the second subcarrier spacing presently being in use. Whichever of the first type of synchronization signal and the second type of synchronization signal was generated is transmitted. To distinguish between the first and second types of synchronization signals, a time domain representation of the second type of synchronization signal includes a plurality of instances of the first type of synchronization signal.

    摘要翻译: 在其无线电接口中利用OFDM的蜂窝通信系统能够利用第一子载波间隔或第二子载波间隔。 当前正在使用中的哪一个当前正在使用时响应于当前正在使用的第一子载波间隔产生第一类型的同步信号,并且响应于当前正在使用的第二子载波间隔而产生第二类型的同步信号来指示。 发送第一类型的同步信号和第二类型的同步信号中的任何一个。 为了区分第一类型和第二类型的同步信号,第二类型的同步信号的时域表示包括第一类型的同步信号的多个实例。

    Secondary synchronization sequences for cell group detection in a cellular communications system
    10.
    发明授权
    Secondary synchronization sequences for cell group detection in a cellular communications system 有权
    用于蜂窝通信系统中的小区组检测的辅同步序列

    公开(公告)号:US09094146B2

    公开(公告)日:2015-07-28

    申请号:US13159017

    申请日:2011-06-13

    IPC分类号: H04J11/00 H04W28/18 H04W48/08

    摘要: Timing parameters and an identity of a particular one of a number of cell groups are indicated in a signal transmitted in a cellular communication system having a radio frame in a physical layer, the radio frame comprising a number of time slots. In a known one of the time slots, a synchronization signal, S1, is transmitted that comprises a pair of sequences, Si%,Sj% (Si%≠Sj% arranged in a first ordering. In another known one of the time slots, a synchronization signal, S2 is transmitted that comprises the pair of sequences, Si%,Sj% arranged in a second ordering. The selected pair of sequences is uniquely identified with the particular cell group, and the first ordering of the sequences is used only for transmission in the known one of the time slots, and the second ordering of the sequences is used only for transmission in said another known one of the time slots.

    摘要翻译: 在具有物理层中的无线电帧的蜂窝通信系统中发送的信号中指示多个小区组中的特定一个小区的定时参数和身份,该无线帧包括多个时隙。 在已知的一个时隙中,发送同步信号S1,该同步信号S1包括一对序列,Si%,Sj%(以第一次排序排列的Si%≠Sj%),在另一个已知的时隙中, 发送同步信号S2,其包括按照第二排序排列的一对序列Si%,Sj%,所选择的一对序列由特定小区组唯一地标识,序列的第一个排序仅用于 已知的一个时隙中的传输,并且序列的第二排序仅用于在所述另一个已知的时隙中的传输。