公开(公告)号：US09648558B2

公开(公告)日：2017-05-09

申请号：US13608653

申请日：2012-09-10

申请人： Liqing Zhang ,  Jianglei Ma ,  Kelvin Au ,  Zhihang Yi

发明人： Liqing Zhang ,  Jianglei Ma ,  Kelvin Au ,  Zhihang Yi

IPC分类号： H04M1/66 ,  H04W48/20 ,  H04W74/00 ,  H04L5/00 ,  H04W12/06

CPC分类号： H04W36/0027 ,  H04L5/0016 ,  H04W12/06 ,  H04W48/20 ,  H04W72/048 ,  H04W74/00 ,  H04W76/11

摘要： A network for facilitating wireless radio communication. The network includes a first access area, wherein the access area includes one or more transmission/receive points. At least one transmission/receive point includes a base station that supports wireless communication between a network and user equipment (UE), such as, a mobile device. The network includes a dedicated connection signature (DCS) that is assigned to a UE. The DCS provides for and is used by the UE to maintain active, unified access to the wireless network. More particularly, the DCS provides for active, contention free, and fast access for the UE to the network through transmission/receive points within the first access area, which is of significance to present and future UE centric virtual radio access networks having high densities of mobile and non-mobile users and with high populations of different types of traffic patterns and applications.

公开(公告)号：US20140071954A1

公开(公告)日：2014-03-13

申请号：US13611823

申请日：2012-09-12

申请人： Kelvin Kar Kin Au ,  Jianglei Ma ,  Liqing Zhang ,  Zhihang Yi ,  Hosein Nikopour

发明人： Kelvin Kar Kin Au ,  Jianglei Ma ,  Liqing Zhang ,  Zhihang Yi ,  Hosein Nikopour

IPC分类号： H04W72/04

CPC分类号： H04W72/0446 ,  H04W28/0205 ,  H04W72/042 ,  H04W88/08

摘要： Methods and devices are provided for communicating data in a wireless channel. In one example, a method includes adapting the transmission time interval (TTI) length of transport container for transmitting data in accordance with a criteria. The criteria may include (but is not limited to) a latency requirement of the data, a buffer size associated with the data, a mobility characteristic of a device that will receive the data. The TTI lengths may be manipulated for a variety of reasons, such as for reducing overhead, satisfy quality of service (QoS) requirements, maximize network throughput, etc. In some embodiments, TTIs having different TTI lengths may be carried in a common radio frame. In other embodiments, the wireless channel may partitioned into multiple bands each of which carrying (exclusively or otherwise) TTIs having a certain TTI length.

摘要翻译： 提供了用于在无线信道中传送数据的方法和设备。 在一个示例中，一种方法包括根据标准调整用于传输数据的传输容器的传输时间间隔（TTI）长度。 标准可以包括（但不限于）数据的等待时间要求，与数据相关联的缓冲器大小，将接收数据的设备的移动特性。 TTI长度可以由于各种原因被操纵，例如用于减少开销，满足服务质量（QoS）要求，最大化网络吞吐量等。在一些实施例中，具有不同TTI长度的TTI可以在公共无线电帧 。 在其他实施例中，无线信道可以被划分成多个带，每个频带承载具有一定TTI长度的（专门或另外）TTI。

公开(公告)号：US11690060B2

公开(公告)日：2023-06-27

申请号：US17182347

申请日：2021-02-23

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： H04W72/044 ,  H04W72/12 ,  H04L5/00 ,  H04L27/26

CPC分类号： H04W72/12 ,  H04L5/0044 ,  H04L5/0092 ,  H04L27/26025 ,  H04W72/044 ,  H04L5/0007

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：US11658788B2

公开(公告)日：2023-05-23

申请号：US16859334

申请日：2020-04-27

申请人： Yu Cao ,  Liqing Zhang ,  Jianglei Ma

发明人： Yu Cao ,  Liqing Zhang ,  Jianglei Ma

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04L1/16 ,  H04L1/1812 ,  H04L1/1822 ,  H04L1/1607 ,  H04L1/1867 ,  H04L1/1829

CPC分类号： H04L5/0055 ,  H04L1/1614 ,  H04L1/1671 ,  H04L1/1819 ,  H04L1/1822 ,  H04L1/1861 ,  H04L1/1893 ,  H04L1/1896 ,  H04L1/1854 ,  H04L5/0044 ,  H04L5/0048 ,  H04W72/0413

摘要： In a wireless communication system, a grant-free uplink transmission is an uplink transmission sent from a user equipment (UE) to a base station that does not need a dynamic and explicit scheduling grant from the base station. Systems and methods are disclosed for performing hybrid automatic repeat request (HARQ) for grant-free uplink transmissions. Signaling relating to the ACK/NACK for the HARQ, as well as signaling relating to configuring the UE for grant-free uplink transmission, is also disclosed.

公开(公告)号：US11606173B2

公开(公告)日：2023-03-14

申请号：US17410486

申请日：2021-08-24

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

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

IPC分类号： H04L5/00 ,  H04L27/26

摘要： For a wireless communications system, scalable orthogonal frequency division multiplexing (OFDM) numerology is incorporated in a manner that can apply to radio link transmissions in future wireless network for frequency division duplex (FDD) and time division duplex (TDD) communications.

公开(公告)号：US11510237B2

公开(公告)日：2022-11-22

申请号：US17119235

申请日：2020-12-11

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：US11284450B2

公开(公告)日：2022-03-22

申请号：US16907876

申请日：2020-06-22

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： H04W74/08 ,  H04W72/04 ,  H04L1/18

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：US11265896B2

公开(公告)日：2022-03-01

申请号：US15871529

申请日：2018-01-15

申请人： Yu Cao ,  Jianglei Ma ,  Liqing Zhang

发明人： Yu Cao ,  Jianglei Ma ,  Liqing Zhang

IPC分类号： H04W72/12 ,  H04W48/16 ,  H04W76/28 ,  H04W74/08 ,  H04W56/00 ,  H04W72/04 ,  H04W28/02

摘要： A user equipment in a wireless communication system may operate in different states, e.g. an idle state, an active/connected state, or an inactive state. Depending upon the state the UE is in, the UE may or may not have its uplink transmission synchronized with the uplink transmissions of other UEs. Mechanisms are disclosed for the UE to send a grant-free uplink transmission, even when the UE does not have its uplink transmission synchronized with the uplink transmissions from other UEs.

公开(公告)号：US11122609B2

公开(公告)日：2021-09-14

申请号：US16818248

申请日：2020-03-13

申请人： Jianglei Ma ,  Liqing Zhang ,  Yu Cao

发明人： Jianglei Ma ,  Liqing Zhang ,  Yu Cao

IPC分类号： H04W72/12 ,  H04W72/04 ,  H04L1/18 ,  H04W72/14

摘要： Systems and methods are disclosed for performing combined grant-free and grant-based UL resource allocation. In a particular embodiment, a network entity sends a first type of UL transmission resource assignment selected from two types of UL transmission resource assignment mechanisms to a UE for grant-free transmission and a second type of UL transmission resource assignment from two types of UL transmission resource assignment mechanism to a UE for grant based transmission. The network entity then receives a first data transmission from the UE for grant free transmission using an assigned transmission resource and a second data transmission from the UE for grant based transmission using an assigned transmission resources. Other embodiments pertain to changing the resource allocation scheme from grant free to grant based for a UE, or vice versa. Examples reasons for doing so may include HARQ re-transmisisons.

公开(公告)号：US20190058566A1

公开(公告)日：2019-02-21

申请号：US16165780

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.