公开(公告)号：US20230284123A1

公开(公告)日：2023-09-07

申请号：US18178402

申请日：2023-03-03

Applicant: Nokia Solutions and Networks Oy

Inventor： Shang Bin GE ,  Jun Jun Chen ,  Gang Cheng

IPC: H04W48/16 ,  H04L5/00 ,  H04B7/22 ,  H04W72/0446

CPC classification number: H04W48/16 ,  H04L5/0048 ,  H04B7/22 ,  H04W72/0446

Abstract: The objective of the embodiments of the present disclosure is to provide a method, device and system for backscatter communication based on Wi-Fi signals. Wherein, a Wi-Fi signal reader device broadcasts periodically a device query message to instruct backscatter communication devices upon receiving the device query message to report their respective device ID information; said backscatter communication devices report their device ID information to said Wi-Fi signal reader device in response to said device query message; said Wi-Fi signal reader device counts the number of the backscatter communication devices that have reported their respective device ID information, and allocates to them the corresponding time slot information.

公开(公告)号：US11343585B2

公开(公告)日：2022-05-24

申请号：US16886267

申请日：2020-05-28

Applicant: Nokia Solutions and Networks Oy

Inventor： Gang Cheng ,  Dingjun He ,  Junkui Li

IPC: H04N21/64 ,  H04N21/6405 ,  H04L65/60 ,  H04N21/6408 ,  H04N21/24 ,  H04L69/324 ,  H04N21/845 ,  H04L69/329 ,  H04W84/18 ,  H04W84/12

Abstract: The present disclosure provides a technical scheme for transmitting video streams in WiFi mesh networks, including a method for transmitting multicast video in an access points in a WiFi mesh network, wherein the method includes: receiving a video stream and determining the node(s) to which the video stream needs to be transmitted, wherein the video stream includes a multicast address; determining dynamically a transmission mode of the video stream and transmitting corresponding video stream to multiple stations using the transmission mode when the nodes are the multiple stations corresponding to the multicast address; transmitting corresponding video stream to a next access point using unicast mode when the node is the next access point.