公开(公告)号：US11546929B2

公开(公告)日：2023-01-03

申请号：US15830928

申请日：2017-12-04

申请人： Yu Cao ,  Liqing Zhang ,  Jianglei Ma

发明人： Yu Cao ,  Liqing Zhang ,  Jianglei Ma

IPC分类号： H04W72/12 ,  H04L1/18 ,  H04W28/04 ,  H04W72/14 ,  H04W74/00 ,  H04L5/00 ,  H04W72/04 ,  H04L1/00

摘要： Methods and systems are provided for signaling for semi-static configuration in grant free uplink transmissions. Radio resource control (RRC) signaling is used to provide information from a base station to a user equipment (UE) that configure the grant free transmission resource to be used by the UE. In some implementations, the RRC signaling may be used in conjunction with system information that is transmitted to all UEs and/or Downlink Control Information (DCI) that the UE needs to access subsequent to the RRC signaling. In some implementations, the DCI includes an activation or deactivation indicator that the UE monitors to determine when the UE is allowed to transmit to the BS or should stop transmitting. Implementations allow for grant free transmission resources to be configured on an individual user based and a group basis.

公开(公告)号：US10673593B2

公开(公告)日：2020-06-02

申请号：US15799157

申请日：2017-10-31

申请人： Yu Cao ,  Liqing Zhang ,  Jianglei Ma

发明人： Yu Cao ,  Liqing Zhang ,  Jianglei Ma

IPC分类号： H04L5/00 ,  H04L1/18 ,  H04L1/16 ,  H04W72/04

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：US10382169B2

公开(公告)日：2019-08-13

申请号：US15470455

申请日：2017-03-27

申请人： Yu Cao ,  Liqing Zhang

发明人： Yu Cao ,  Liqing Zhang

IPC分类号： H04L1/08 ,  H04L1/18 ,  H04L1/00

摘要： Systems and methods are disclosed for performing hybrid automatic repeat request (HARQ) for grant-free uplink transmissions. Some of the systems and methods disclosed herein may address problems such as how to perform acknowledgement (ACK) and/or negative acknowledgement (NACK), how to determine and signal retransmission timing, how to determine the transmission/retransmission attempt and the redundancy version (RV), and/or how to perform the HARQ combining.

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：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：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：US10826655B2

公开(公告)日：2020-11-03

申请号：US16533994

申请日：2019-08-07

申请人： Yu Cao ,  Liqing Zhang

发明人： Yu Cao ,  Liqing Zhang

IPC分类号： H04L1/18 ,  H04L1/00

摘要： Systems and methods are disclosed for performing hybrid automatic repeat request (HARQ) for grant-free uplink transmissions. Some of the systems and methods disclosed herein may address problems such as how to perform acknowledgement (ACK) and/or negative acknowledgement (NACK), how to determine and signal retransmission timing, how to determine the transmission/retransmission attempt and the redundancy version (RV), and/or how to perform the HARQ combining.

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.