公开(公告)号：US20190132169A1

公开(公告)日：2019-05-02

申请号：US16234129

申请日：2018-12-27

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： H04L27/26 ,  H04L5/00

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：US20180343153A1

公开(公告)日：2018-11-29

申请号：US16036569

申请日：2018-07-16

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： H04L27/26 ,  H04L5/00

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：US09736774B2

公开(公告)日：2017-08-15

申请号：US14609707

申请日：2015-01-30

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

CPC分类号： H04W52/0209 ,  H04W52/0216 ,  H04W52/0229 ,  H04W68/00 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/146 ,  Y02D70/164

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.

公开(公告)号：US11751189B2

公开(公告)日：2023-09-05

申请号：US17896550

申请日：2022-08-26

申请人： Liqing Zhang ,  Jianglei Ma ,  Hua Xu

发明人： Liqing Zhang ,  Jianglei Ma ,  Hua Xu

IPC分类号： H04W72/044 ,  H04W76/11 ,  H04W76/14 ,  H04W76/40 ,  H04W72/20 ,  H04W92/18 ,  H04W88/04

CPC分类号： H04W72/0466 ,  H04W72/20 ,  H04W76/11 ,  H04W76/14 ,  H04W76/40 ,  H04W88/04 ,  H04W92/18

摘要： Systems and methods are provided to achieve data scrambling and transmission identification in the SL for UE cooperation (UC), in which one or more cooperating UEs help with a transmission to a target UE. Corresponding configuration schemes are also provided. In addition, systems and methods are provided to achieve data DMRS sequence generation and transmission identification in SL for UC, in which one or more cooperating UEs help with a transmission to a target UE. Corresponding configuration schemes are also provided. Furthermore, systems and methods of SL control channel scrambling and identification for UE cooperation are provided.

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：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：US11477849B2

公开(公告)日：2022-10-18

申请号：US16939672

申请日：2020-07-27

申请人： Hua Xu ,  Jianglei Ma ,  Liqing Zhang

发明人： Hua Xu ,  Jianglei Ma ,  Liqing Zhang

IPC分类号： H04B7/026 ,  H04W88/04 ,  H04W72/12 ,  H04W92/18 ,  H04W92/10

摘要： Methods and apparatuses are described for cooperation of two or more devices to improve the transmissions over a Uu interface. A source receives or transmits an indicator indicating a first mode of two modes of cooperation between the source apparatus and at least a first cooperating device. The two modes of cooperation includes a joint communication mode and a relay mode of cooperation. If the first mode is the joint communication mode, at least a portion of the data, intended for the intended recipient, is transmitted to at least the first cooperating device to be further transmitted by the first cooperating device to the intended recipient. A same or different portion of the data is transmitted to the intended recipient or to a second cooperating device to be further transmitted by the second cooperating device to the intended recipient.

公开(公告)号：US11432291B2

公开(公告)日：2022-08-30

申请号：US16906334

申请日：2020-06-19

申请人： Liqing Zhang ,  Jianglei Ma ,  Hua Xu

发明人： Liqing Zhang ,  Jianglei Ma ,  Hua Xu

IPC分类号： H04W72/04 ,  H04W76/11 ,  H04W76/14 ,  H04W76/40 ,  H04W92/18 ,  H04W88/04

摘要： Systems and methods are provided to achieve data scrambling and transmission identification in the SL for UE cooperation (UC), in which one or more cooperating UEs help with a transmission to a target UE. Corresponding configuration schemes are also provided. In addition, systems and methods are provided to achieve data DMRS sequence generation and transmission identification in SL for UC, in which one or more cooperating UEs help with a transmission to a target UE. Corresponding configuration schemes are also provided. Furthermore, systems and methods of SL control channel scrambling and identification for UE cooperation are provided.

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：US20180279385A1

公开(公告)日：2018-09-27

申请号：US15989810

申请日：2018-05-25

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

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.