利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

212 条记录 (耗时 0.032 秒)

    RAR WINDOW DEFINITION IN NTN
    4.
    发明公开
    RAR WINDOW DEFINITION IN NTN 审中-公开

    公开(公告)号：US20230292371A1

    公开(公告)日：2023-09-14

    申请号：US18019951

    申请日：2021-08-06

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Johan Rune ,  Björn Hofström ,  Xingqin Lin

    IPC分类号： H04W74/08 ,  H04W74/00

    CPC分类号： H04W74/0833 ,  H04W74/006 ,  H04W84/06

    摘要： Systems and methods for defining a Random Access Response (RAR) window for a Non-Terrestrial Network (NTN) are provided. In some embodiments, a method performed by a User Equipment (UE) comprises transmitting a first random access transmission in a Physical Random Access Channel (PRACH) occasion, the first random access transmission being either a random access preamble or a Msg A; determining a reference symbol for a start of a response window, the response window being either a RAR window or a MsgB response window; and monitoring for a response during the response window, the start of the monitoring response window being defined relative to the reference symbol. In this way, some embodiments herein eliminate the problems associated with the current RAR window timing definition, when applied in an NTN.

    RANDOM ACCESS PROCEDURES FOR SATELLITE COMMUNICATIONS
    6.
    发明公开
    RANDOM ACCESS PROCEDURES FOR SATELLITE COMMUNICATIONS 审中-公开

    公开(公告)号：US20230180306A1

    公开(公告)日：2023-06-08

    申请号：US17838576

    申请日：2022-06-13

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Xingqin Lin ,  Shiwei Gao ,  Helka-Liina Määttänen ,  Siva Muruganathan ,  Jonas Sedin ,  Hazhir Shokri Razaghi ,  Zhenhua Zou

    IPC分类号： H04W74/08 ,  H04W76/11 ,  H04W56/00

    CPC分类号： H04W74/0841 ,  H04W76/11 ,  H04W56/0075 ,  H04W84/06

    摘要： Systems and methods are disclosed for random access in a wireless communication system such as, e.g., a wireless communication system having a non-terrestrial (e.g., satellite-based) radio access network. Embodiments of a method performed by a wireless device and corresponding embodiments of a wireless device are disclosed. In some embodiments, a method performed by a wireless device for random access comprises performing an open-loop timing advance estimation procedure to thereby determine an open-loop timing advance estimate for an uplink between the wireless device and a base station. The method further comprises transmitting a random access preamble using the open-loop timing advance estimate. In this manner, random access can be performed even in the presence of a long propagation delay such as that present in a satellite-based radio access network. Embodiments of a method performed by a base station and corresponding embodiments of a base station are also disclosed.

    Beam Reconfiguration in a Wireless Communication Network
    7.
    发明公开
    Beam Reconfiguration in a Wireless Communication Network 审中-公开

    公开(公告)号：US20230155669A1

    公开(公告)日：2023-05-18

    申请号：US17917423

    申请日：2021-04-09

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Olof Liberg ,  Xingqin Lin ,  Fredrik Huss

    IPC分类号： H04B7/185

    CPC分类号： H04B7/18513 ,  H04B7/18519

    摘要： A wireless device (18) is configured for use in a wireless communication network (10), e.g., a non-terrestrial network. The wireless device (18) is configured to receive, from a network node (20) in the wireless communication network (10), signaling (22) that indicates reconfiguration of a beam (16) serving the wireless device (18). The wireless device (18) in some embodiments is also configured to, responsive to receiving the signaling (22), reacquire time and/or frequency synchronization for the beam (16), e.g., to account for the indicated reconfiguration of the beam (16).

    SERVICE LINK SWITCHING IN A WIRELESS COMMUNICATIONS NETWORK
    8.
    发明申请
    SERVICE LINK SWITCHING IN A WIRELESS COMMUNICATIONS NETWORK 有权

    公开(公告)号：US20230128255A1

    公开(公告)日：2023-04-27

    申请号：US17910874

    申请日：2021-03-10

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Olof Liberg ,  Xingqin Lin

    IPC分类号： H04B7/185 ,  H04W36/08 ,  H04W36/00

    摘要： A method performed by a first network entity associated with a first airborne or orbital communication node for enabling at least one wireless device in a wireless communications network to switch from being served by a first service link of the first airborne or orbital communication node to being served by a second service link of a second airborne or orbital communication node, is provided. The method comprises transmitting, to the at least one wireless device, information associated with a reference signal of a transmission beam transmitted over the second service link of the second airborne or orbital communication node, comprising information indicating the location over time of the second airborne or orbital communication node. A first network entity, a wireless device and method therein are also provided, as well as, computer programs and carriers.