公开(公告)号：US07904093B2

公开(公告)日：2011-03-08

申请号：US10582478

申请日：2004-12-01

申请人： Johan Nyström ,  Pål Frenger ,  Erik Dahlman ,  Svante Signell ,  Göran Klang

发明人： Johan Nyström ,  Pål Frenger ,  Erik Dahlman ,  Svante Signell ,  Göran Klang

IPC分类号： H04W72/00

CPC分类号： H04L5/0048 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/006 ,  H04L25/0226 ,  H04W16/02 ,  H04W16/10 ,  H04W16/12 ,  H04W52/325 ,  H04W72/08

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。

公开(公告)号：US08843144B2

公开(公告)日：2014-09-23

申请号：US12926511

申请日：2010-11-23

申请人： Johan Nyström ,  Pál Frenger ,  Erik Dahlman ,  Svante Signell ,  Göran Klang

发明人： Johan Nyström ,  Pál Frenger ,  Erik Dahlman ,  Svante Signell ,  Göran Klang

IPC分类号： H04W72/00 ,  H04W16/12 ,  H04L25/02 ,  H04W16/02 ,  H04L5/00 ,  H04W72/08 ,  H04W52/32 ,  H04W16/10 ,  H04L1/00

CPC分类号： H04L5/0048 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/006 ,  H04L25/0226 ,  H04W16/02 ,  H04W16/10 ,  H04W16/12 ,  H04W52/325 ,  H04W72/08

摘要： A set of different pilot structures are designed for use in different environments and/or different user behaviors 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。

公开(公告)号：US20110075625A1

公开(公告)日：2011-03-31

申请号：US12926511

申请日：2010-11-23

申请人： Johan Nyström ,  Pàl Frenger ,  Erik Dahlman ,  Svante Signell ,  Göran Klang

发明人： Johan Nyström ,  Pàl Frenger ,  Erik Dahlman ,  Svante Signell ,  Göran Klang

IPC分类号： H04W4/00

CPC分类号： H04L5/0048 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/006 ,  H04L25/0226 ,  H04W16/02 ,  H04W16/10 ,  H04W16/12 ,  H04W52/325 ,  H04W72/08

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。

公开(公告)号：US20110136496A1

公开(公告)日：2011-06-09

申请号：US13026724

申请日：2011-02-14

申请人： Göran KLANG ,  Pål Frenger ,  Stefan Parkvall ,  Johan Nyström

发明人： Göran KLANG ,  Pål Frenger ,  Stefan Parkvall ,  Johan Nyström

IPC分类号： H04W72/08 ,  H04W24/00

CPC分类号： H04W16/10 ,  H04W72/08

摘要： Radio resources are allocated to communication between a mobile station and a base station. The available set of radio resources may comprise radio resources primarily assigned to a neighboring cell if the 5 mobile station experience an instantaneous low level of co-channel interference from such neighboring cells. The existence of interference is preferably deduced from signal quality measurements of pilot signals. The allocation may concern uplink and/or downlink communication. Devices for performing the measurements are located in the mobile station, while devices for performing the evaluation, selection and actual allocation can be placed in different parts of the communications system-in the mobile station, in a base station or in a core network node, or as a distributed means.

摘要翻译： 无线资源分配给移动台与基站之间的通信。 如果5个移动站体验到来自这些相邻小区的同信道干扰的瞬时低电平，则可用的无线电资源集合可以包括主要分配给相邻小区的无线电资源。 干扰的存在优先从导频信号的信号质量测量推导出来。 该分配可以涉及上行链路和/或下行链路通信。 用于执行测量的设备位于移动站中，而用于执行评估，选择和实际分配的设备可以放置在移动站，基站或核心网络节点中的通信系统的不同部分中， 或作为分布式手段。

公开(公告)号：US07912475B2

公开(公告)日：2011-03-22

申请号：US11578515

申请日：2005-03-29

申请人： Göran Klang ,  Pål Frenger ,  Stefan Parkvall ,  Johan Nyström

发明人： Göran Klang ,  Pål Frenger ,  Stefan Parkvall ,  Johan Nyström

IPC分类号： H04W72/00

CPC分类号： H04W16/10 ,  H04W72/08

摘要： Radio resources are allocated to communication between a mobile station and a base station. The available set of radio resources may comprise radio resources primarily assigned to a neighboring cell if the 5 mobile station experience an instantaneous low level of co-channel interference from such neighboring cells. The existence of interference is preferably deduced from signal quality measurements of pilot signals. The allocation may concern uplink and/or downlink communication. Devices for performing the measurements are located in the mobile station, while devices for performing the evaluation, selection and actual allocation can be placed in different parts of the communications system—in the mobile station, in a base station or in a core network node, or as a distributed means.

摘要翻译： 无线资源分配给移动台与基站之间的通信。 如果5个移动站体验到来自这些相邻小区的同信道干扰的瞬时低电平，则可用的无线电资源组可以包括主要分配给相邻小区的无线电资源。 干扰的存在优先从导频信号的信号质量测量推导出来。 该分配可以涉及上行链路和/或下行链路通信。 用于执行测量的设备位于移动站中，而用于执行评估，选择和实际分配的设备可以放置在移动站，基站或核心网络节点中的通信系统的不同部分中， 或作为分布式手段。

公开(公告)号：US07616556B2

公开(公告)日：2009-11-10

申请号：US10581995

申请日：2004-12-01

申请人： Johan Nyström ,  Pål Frenger ,  Erik Dahlman

发明人： Johan Nyström ,  Pål Frenger ,  Erik Dahlman

IPC分类号： H04J11/00

CPC分类号： H04L27/30 ,  H04L5/0053 ,  H04L5/0091 ,  H04L27/2626 ,  H04L27/2647

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。

公开(公告)号：US07881260B2

公开(公告)日：2011-02-01

申请号：US10582688

申请日：2003-12-19

申请人： Johan Nyström ,  Göran Klang ,  Pal Frenger

发明人： Johan Nyström ,  Göran Klang ,  Pal Frenger

IPC分类号： H04J11/00 ,  H04W72/00

CPC分类号： H04L5/0044 ,  H04L5/0007 ,  H04L27/261 ,  H04W16/00 ,  H04W16/12

摘要： A method for use in a cellular, FFT based multi-carrier communications system comprising N subcarriers, for allocating a set P of sub-carriers to be reserved for potential use as carriers of specific information. A number M indicating the number of sub-carriers to be allocated to a set P of sub-carriers, such that L=N/M is an integer. At least two subcarriers of the set P={(n0+m*L) mod N : 0≦m

摘要翻译： 一种在基于FFT的多载波通信系统中使用的方法，其包括N个子载波，用于分配待保留用于潜在用途的子载波的集合P作为特定信息的载体。 指示要分配给子载波的集合P的子载波的数量的数字M，使得L = N / M是整数。 对于特定信息，集合P = {（n0 + m * L）mod N：0＆nlE; m

公开(公告)号：US08559343B2

公开(公告)日：2013-10-15

申请号：US12816821

申请日：2010-06-16

申请人： Stefan Parkvall ,  David Astely ,  Erik Dahlman ,  Johan Nyström ,  Muhammad Imadur Rahman ,  Yngve Selén ,  Johan Sköld

发明人： Stefan Parkvall ,  David Astely ,  Erik Dahlman ,  Johan Nyström ,  Muhammad Imadur Rahman ,  Yngve Selén ,  Johan Sköld

IPC分类号： H04J3/00 ,  H04W4/00

CPC分类号： H04W72/0446 ,  H04B7/2643 ,  H04B7/2656 ,  H04L5/14 ,  H04W72/0406

摘要： The technology disclosed provides the ability for a subframe to be configured as a “flexible” subframe. As a result, at least three different types of subframes in a TDD system may be configured: a downlink (“DL”) subframe, an uplink (“UL”) subframe, and a “flexible” subframe. While the DL and UL subframes are preconfigured for each frame instance, the flexible subframes are dynamically allocated to be an uplink subframe in one instance of a frame and a downlink subframe in another instance of the frame.

摘要翻译： 所公开的技术提供了将子帧配置为“灵活”子帧的能力。 结果，可以配置TDD系统中的至少三种不同类型的子帧：下行链路（“DL”）子帧，上行链路（“UL”）子帧和“灵活”子帧。 虽然对于每个帧实例预先配置了DL和UL子帧，但是在帧的另一个实例中，灵活子帧被动态地分配为帧的一个实例中的上行链路子帧和下行链路子帧。

公开(公告)号：US20090258639A1

公开(公告)日：2009-10-15

申请号：US10583452

申请日：2004-12-02

申请人： Johan Nyström ,  Pal Frenger ,  Erik Dahlman ,  Stefan Parkvall

发明人： Johan Nyström ,  Pal Frenger ,  Erik Dahlman ,  Stefan Parkvall

IPC分类号： H04W40/00

CPC分类号： H04W76/15 ,  H04B7/2606 ,  H04W76/14 ,  H04W88/04

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。

公开(公告)号：US06535547B1

公开(公告)日：2003-03-18

申请号：US09324372

申请日：1999-06-02

申请人： Bo Lyckegård ,  Riaz Esmailzadeh ,  Johan Nyström ,  Erik Dahlman ,  Sandeep Chennakeshu ,  Karim Jamal

发明人： Bo Lyckegård ,  Riaz Esmailzadeh ,  Johan Nyström ,  Erik Dahlman ,  Sandeep Chennakeshu ,  Karim Jamal

IPC分类号： H04L2730

CPC分类号： H04W74/004 ,  H04J13/004 ,  H04W74/0833

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。