Invention Application
- Patent Title: NODE UNIT CAPABLE OF MEASURING AND COMPENSATING TRANSMISSION DELAY AND DISTRIBUTED ANTENNA SYSTEM INCLUDING THE SAME
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Application No.: US15540651Application Date: 2014-12-31
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Publication No.: US20170367061A1Publication Date: 2017-12-21
- Inventor: Doyoon KIM , Hyoungho KIM
- Applicant: SOLiD, INC.
- Applicant Address: KR Seongnam-si, Gyeonggi-do
- Assignee: SOLiD, INC.
- Current Assignee: SOLiD, INC.
- Current Assignee Address: KR Seongnam-si, Gyeonggi-do
- Priority: KR10-2014-0194361 20141230
- International Application: PCT/KR2014/013102 WO 20141231
- Main IPC: H04W56/00
- IPC: H04W56/00 ; H04L7/00 ; H04W88/08
Abstract:
Provided is a node unit which is branch-connected to another communication node via a transport medium, the node unit comprising: a delay measurement unit which transmits a test signal for measuring a delay to an adjacent node unit of the branch-connected upper stage via the transport medium and detects a loopback signal to which the test signal is looped back via the adjacent node unit of the upper stage, thereby measuring an upper stage transmission delay between the adjacent node unit of the upper stage and the node unit; a delay summation unit which, when an adjacent node unit of the branch-connected lower stage exists, receives a lower stage transmission delay transmitted from the adjacent node unit of the lower stage, and calculates a summed transmission delay by summing the upper stage transmission delay and the lower stage transmission delay; and a control unit which transmits the summed transmission delay to the adjacent node unit of the upper stage.
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