公开(公告)号：US20190104436A1

公开(公告)日：2019-04-04

申请号：US15865838

申请日：2018-01-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoo Seung SONG ,  Do Wook KANG ,  Hyun Seo OH ,  Shin Kyung LEE ,  Jeong Woo LEE ,  Hyun Kyun CHOI

IPC: H04W28/02 ,  H04W72/12 ,  H04W4/46 ,  H04W28/04

Abstract: Provided is a packet transmission method of a communication device. The packet transmission method includes randomly determining a first packet transmission time of a first packet which is to be transmitted in an nth beacon interval, generating the first packet, and transmitting the first packet at the first packet transmission time.

公开(公告)号：US20200178352A1

公开(公告)日：2020-06-04

申请号：US16700786

申请日：2019-12-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Han Byeog CHO ,  Hyun Seo OH ,  Ho Kyom KIM ,  Nak Seon SEONG ,  Byung Tae JANG

IPC: H04W88/06 ,  H04L12/24

Abstract: Provided are a system and method for multi-mode integrated management for a multi-radio communication environment. The system includes a receiver configured to receive radio channel state information, a memory in which a program for operating an access point division in consideration of the radio channel state information is stored, and a processor configured to execute the program, wherein the processor manages an interface between a cellular base station and a radio access control device.

公开(公告)号：US20190254004A1

公开(公告)日：2019-08-15

申请号：US16258073

申请日：2019-01-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoo Seung SONG ,  Do Wook KANG ,  Shin Kyung LEE ,  Jeong Woo LEE ,  Hyun Seo OH

IPC: H04W72/02 ,  H04W72/08 ,  H04W28/02 ,  H04W28/06

CPC classification number: H04W72/02 ,  H04W28/0289 ,  H04W28/06 ,  H04W72/085 ,  H04W72/087

Abstract: Provided are a system and method for collaboratively selecting resources in which the reliability of transmission data is ensured and the efficiency of a transmission channel is maximized. The system for collaboratively selecting resources includes a packet generator, a selector configured to select resources in consideration of a determinant including at least one of information on a packet and transmission environment information of the packet, and a packet transmitter configured to transmit the packet through the selected resources.

公开(公告)号：US20190281603A1

公开(公告)日：2019-09-12

申请号：US16138320

申请日：2018-09-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Seo OH ,  Do Wook KANG

IPC: H04W72/04 ,  H04W72/08 ,  H04W4/40 ,  H04B17/382 ,  H04B17/318 ,  H04B17/336 ,  H04B17/364

Abstract: A channel control method and apparatus for improving the transmission capacity of packet data and communications reliability in V2X vehicle packet communications. In V2X wireless communications, the number and bandwidths of transmission channels are predetermined. The control method monitors signal levels received between transceivers and the frequency of channel usage, and based on the result. of the monitoring, varies at least one of the bandwidth of frequency channels and the number of transmission channels. The control method is adaptive to wireless channels. The bandwidth of a transmission channel is variably assigned to, depending on whether the channel status for signal reception is good or bad. The number of transmission channels is variably assigned to, depending on whether the usage frequency of a reception channel is low or high.