公开(公告)号：US11115169B2

公开(公告)日：2021-09-07

申请号：US16163271

申请日：2018-10-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Fei Wang ,  Jin Zhang ,  Lifeng Zhao ,  Yajun Zhi ,  Zhijun Liu

IPC: H04L5/00 ,  H04L1/12 ,  H04W52/02 ,  H04W8/26 ,  H04W28/06 ,  H04W40/24 ,  H04W84/18 ,  H04L1/18 ,  H04W28/02 ,  H04W74/06

Abstract: An indirect data transmission method may include: calculating an estimated arrival time of a next poll data request of a terminal device according to a receipt time of a poll data request, after the poll data request is received from the terminal device; transmitting data for the terminal device to a cache of a Media Access Control (MAC) layer module at a time point which is a predetermined time length ahead of the estimated arrival time responsive to a determination that there is the data for the terminal device in a network layer module; and transmitting, to the terminal device, an acknowledgement packet indicating that there is the data to be transmitted in the cache of the MAC layer module and the data for the terminal device, responsive to receiving the next poll data request.

公开(公告)号：US12056381B2

公开(公告)日：2024-08-06

申请号：US17746719

申请日：2022-05-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kun Zhang ,  Zhao Chen ,  Kun Dou ,  Bei Qi ,  Zhijun Liu

IPC: G06F12/00 ,  G06F3/06

CPC classification number: G06F3/0643 ,  G06F3/0604 ,  G06F3/064 ,  G06F3/0659 ,  G06F3/0683

Abstract: A data processing method for a log structured merge (LSM) tree includes selecting SST files to be compressed and merged in a current layer and a next layer, sequentially reading the SST files to be compressed and merged in the current layer and the next layer from a first storage device and sequentially writing the SST files in a second storage device, randomly reading the SST files to be compressed and merged from the second storage device into a memory according to key sequence numbers of data blocks included in the SST files to be compressed and merged, and performing compression and merge processing on the SST files to be compressed and merged. Sequential and random read and write speed of the second storage device is higher than that of the first storage device.