公开(公告)号：US09750056B2

公开(公告)日：2017-08-29

申请号：US14606665

申请日：2015-01-27

申请人： Kelvin Kar Kin Au ,  Liqing Zhang ,  Jianglei Ma

发明人： Kelvin Kar Kin Au ,  Liqing Zhang ,  Jianglei Ma

IPC分类号： H04J3/00 ,  H04W74/08 ,  H04W72/04 ,  H04L1/18

CPC分类号： H04W74/0841 ,  H04L1/1861 ,  H04W72/04

摘要： A system and method includes implementing, by a base station (BS), a reliable ultra-low latency transmission mechanism in a grant-free uplink transmission scheme having defined therein contention transmission unit (CTU) access regions and a plurality of CTUs. Implementing the reliable ultra-low latency transmission mechanism includes defining a reliable ultra-low latency CTU (RULL-CTU) access region from a portion of the CTU access regions of the grant-free transmission scheme, defining an RULL-CTU mapping scheme by mapping at least a portion of plurality of CTUs to the RULL-CTU access region to define a plurality of RULL-CTUs, defining a reliable ultra-low latency user equipment (RULL-UE) mapping scheme by defining rules for mapping a plurality of RULL-UEs to the plurality of RULL-CTUs in an initial pattern for initial transmissions in a first transmission time interval (TTI), and a regrouped pattern for redundant transmissions in a second TTI subsequent to the first TTI.

公开(公告)号：US09585024B2

公开(公告)日：2017-02-28

申请号：US13106598

申请日：2011-05-12

申请人： Liqing Zhang ,  Jianglei Ma ,  Zhijun Chao

发明人： Liqing Zhang ,  Jianglei Ma ,  Zhijun Chao

IPC分类号： H04W28/02 ,  H04W16/14 ,  H04W24/10 ,  H04W72/04 ,  H04W72/08 ,  H04W92/12

CPC分类号： H04W16/14 ,  H04W24/10 ,  H04W72/0433 ,  H04W72/082 ,  H04W92/12

摘要： A system and method for self-organized inter-cell interference coordination are provided. A method for controller operations includes receiving signal power measurements at a controller, determining an interference level based on the signal power measurements, generating relationship information based on the interference level, and determining frequency reuse modes for communications controllers controlled by the controller based on the relationship information.

摘要翻译： 提供了一种用于自组织小区间干扰协调的系统和方法。 一种用于控制器操作的方法包括在控制器处接收信号功率测量，基于信号功率测量确定干扰电平，基于干扰电平产生关系信息，以及基于该关系确定由控制器控制的通信控制器的频率重用模式 信息。

公开(公告)号：US20120028664A1

公开(公告)日：2012-02-02

申请号：US13118239

申请日：2011-05-27

申请人： Liqing Zhang ,  Jianglei Ma ,  Zhijun Chao

发明人： Liqing Zhang ,  Jianglei Ma ,  Zhijun Chao

IPC分类号： H04W72/04

CPC分类号： H04W16/14 ,  H04W24/10 ,  H04W72/0433 ,  H04W72/082 ,  H04W92/12

摘要： A system and method for automatic fractional frequency reuse (FFR) planning are provided. A method for controller operations includes determining a group of frequency reuse modes, assigning at least one frequency reuse mode to a controller based on mutual relationship information, where the at least one frequency reuse mode is from the group of frequency reuse modes, and sharing the at least one frequency reuse mode with communications controllers coupled to the controller.

摘要翻译： 提供了一种用于自动分数频率复用（FFR）规划的系统和方法。 一种用于控制器操作的方法包括：确定一组频率复用模式，基于相互关系信息将至少一个频率复用模式分配给控制器，其中所述至少一个频率复用模式来自所述频率复用模式组，并且共享 具有耦合到控制器的通信控制器的至少一个频率重用模式。

公开(公告)号：US11476899B2

公开(公告)日：2022-10-18

申请号：US16844233

申请日：2020-04-09

申请人： Jianglei Ma ,  Hua Xu ,  Liqing Zhang ,  Peiying Zhu

发明人： Jianglei Ma ,  Hua Xu ,  Liqing Zhang ,  Peiying Zhu

IPC分类号： H04B7/026 ,  H04B7/0413

摘要： The present disclosure relates to uplink cooperative multi-User Equipment (UE) cooperative transmission such as Multiple-Input Multiple-Output (MIMO) transmission. Source data of a source UE that is to be transmitted via uplink cooperative transmission by multiple UEs, is transmitted to at least one cooperative UE over an SL. The source data is associated with an identifier for identifying the UE to the network equipment as a source of the source data. The multiple UEs transmit the source data and the identifier in an uplink direction to the network equipment. The network equipment receives the source data from the multiple UEs in a cooperative transmission such as cooperative MIMO transmission, and obtains the identifier for identifying the source UE as the source of the source data.

公开(公告)号：US11412513B2

公开(公告)日：2022-08-09

申请号：US16952315

申请日：2020-11-19

申请人： Liqing Zhang ,  Jianglei Ma ,  Yongxia Lyu ,  Peiying Zhu

发明人： Liqing Zhang ,  Jianglei Ma ,  Yongxia Lyu ,  Peiying Zhu

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L27/26

摘要： By defining more SCS options and Discrete Fourier Transform (“DFT”) options for transmissions in future networks, there arises cause to select from among the options, with aspects of the channel as guidance for the selection. In addition, new CP designs may be defined for use with the new SCS options and the new DFT options along with methods of selecting a CP design appropriate to a particular situation. The new CP designs may be shown to have smaller CP overhead when compared to the known CP designs used for known combinations of an SCS option with an FFT size option. New sampling frequency design options and new system basic timing options may also be defined, along with methods of making appropriate selections from among these options. Control signaling using higher layers may be used to distribute configuration options that include multiple SCS options, CP duration options, sampling frequency options and DFT size options per sub-band. Later, layer 1 signaling may be used to specify a particular option from among the multiple options.

公开(公告)号：US10945274B2

公开(公告)日：2021-03-09

申请号：US15454758

申请日：2017-03-09

申请人： Liqing Zhang ,  Jianglei Ma ,  Kelvin Kar Kin Au ,  Wen Tong

发明人： Liqing Zhang ,  Jianglei Ma ,  Kelvin Kar Kin Au ,  Wen Tong

IPC分类号： H04W72/12 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04

摘要： Methods of bandwidth utilization are provided. Within a scheduling bandwidth, which may be an entire carrier bandwidth or a sub-band, scheduling is used to reserve a guard zone at the edge of the scheduled bandwidth. This can be based on the frequency localization capabilities of a transmitter that is to be scheduled. The guard zone may be defined to a resolution that is the same as the scheduling resolution in which case the guard zone is defined entirely through scheduling. Alternatively, the guard zone may be defined to a resolution smaller than the scheduling resolution in which case scheduling and further signaling may be employed to define the guard zone.

公开(公告)号：US10779321B2

公开(公告)日：2020-09-15

申请号：US16193365

申请日：2018-11-16

申请人： Yu Cao ,  Liqing Zhang ,  Jianglei Ma

发明人： Yu Cao ,  Liqing Zhang ,  Jianglei Ma

IPC分类号： H04W72/14 ,  H04L1/16 ,  H04W74/02 ,  H04L1/18 ,  H04W72/12 ,  H04W88/02 ,  H04W88/08

摘要： There may be situations in which it is beneficial for a user equipment to switch between grant-free uplink wireless transmissions and grant-based uplink wireless transmissions. Systems and methods are disclosed that help facilitate grant-based and grant-free uplink wireless communications, and the switching between the two. For example, systems and methods for mitigating collision between a granted uplink wireless transmission and a grant-free uplink wireless transmission are disclosed herein.

公开(公告)号：US20190052431A1

公开(公告)日：2019-02-14

申请号：US16165450

申请日：2018-10-19

申请人： Kelvin Kar Kin Au ,  Liqing Zhang ,  Mohammadhadi Baligh ,  Jianglei Ma ,  Wen Tong

发明人： Kelvin Kar Kin Au ,  Liqing Zhang ,  Mohammadhadi Baligh ,  Jianglei Ma ,  Wen Tong

IPC分类号： H04L5/00 ,  H04W74/00

摘要： A method and system for operating a user equipment (UE) wherein a first set of radio access procedures are supported when the UE is in a first operating state, and a second set of radio access procedures are supported when the UE is in a second operating state.

公开(公告)号：US20190052430A1

公开(公告)日：2019-02-14

申请号：US16165378

申请日：2018-10-19

申请人： Kelvin Kar Kin Au ,  Liqing Zhang ,  Mohammadhadi Baligh ,  Jianglei Ma ,  Wen Tong

发明人： Kelvin Kar Kin Au ,  Liqing Zhang ,  Mohammadhadi Baligh ,  Jianglei Ma ,  Wen Tong

IPC分类号： H04L5/00 ,  H04W74/00

摘要： A method and system for operating a user equipment (UE) wherein a first set of radio access procedures are supported when the UE is in a first operating state, and a second set of radio access procedures are supported when the UE is in a second operating state.

公开(公告)号：US10142929B2

公开(公告)日：2018-11-27

申请号：US15649995

申请日：2017-07-14

申请人： Kelvin Kar Kin Au ,  Liqing Zhang ,  Jianglei Ma

发明人： Kelvin Kar Kin Au ,  Liqing Zhang ,  Jianglei Ma

IPC分类号： H04W52/02 ,  H04W68/00

摘要： An apparatus and method for a wireless device to receive data in an eco state is provided. According to an embodiment of the disclosure, upon determining that data is to be transmitted to the wireless device in the eco state, a network node operates to transmit a unicast notification message to the wireless device in order to inform the wireless device of the impending data transmission. According to another embodiment of the disclosure, in response to receiving the unicast notification message, the wireless device operates to receive the data in accordance with the unicast notification message. To this end, the wireless device might for example try to receive data for a time period following the unicast notification message. Meanwhile, the wireless device may remain in the eco state.