Title:
CHANNEL PARAMETER ESTIMATION METHOD AND RELATED APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/058322
Kind Code:
A1
Abstract:
The present invention provides a channel parameter estimation method and a related apparatus. A CM obtains a second data frame through a downlink channel between the CM and a CMTS, the second data frame being generated in a manner in which a first data frame sent by the CMTS is modulated by using the downlink channel, a zero bit symbol of the first data frame does not comprise a valid code word and comprises a zero bit NCP and an idle code word identified by the zero bit NCP, and the idle code word has a data sequence for channel parameter evaluation; when the CM obtains a zero bit symbol of the second data frame from the second data frame, the CM can evaluate a channel parameter of the downlink channel according to a data sequence in the zero bit symbol of the second data frame and the data sequence in the zero bit symbol of the first data frame. The CM just needs to consume a time for obtaining a symbol from starting estimation of the channel parameter of the downlink channel to obtaining the channel parameter, and the time for channel parameter estimation is shortened, thereby improving the timeliness of bandwidth allocation.
Inventors:
WANG FAN (CN)
OUYANG TAO (CN)
ZHANG LI (CN)
ZHANG XIAOLONG (CN)
OUYANG TAO (CN)
ZHANG LI (CN)
ZHANG XIAOLONG (CN)
Application Number:
PCT/CN2016/100394
Publication Date:
April 05, 2018
Filing Date:
September 27, 2016
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L12/26
Foreign References:
| CN102255719A | 2011-11-23 | |||
| CN105009502A | 2015-10-28 | |||
| CN101702634A | 2010-05-05 | |||
| US20130028253A1 | 2013-01-31 | |||
| US20050052993A1 | 2005-03-10 |
Other References:
SAWYER, W.: "Management Information Base for Data Over Cable Service Interface Specification (DOCSIS) Cable Modem Termination Systems for Subscriber Management", IETF REQUEST FOR COMMENTS: 4036, 30 April 2005 (2005-04-30), XP055603693
"NGB broadband access system- Technical specification of C-DOCSIS", STATE ADMINISTRATION OF RADIO, FILM AND TV, 17 August 2012 (2012-08-17)
"NGB broadband access system- Technical specification of C-DOCSIS", STATE ADMINISTRATION OF RADIO, FILM AND TV, 17 August 2012 (2012-08-17)
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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