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HFC network downlink data multi-channel packaging and transmitting method

A technology of downlink data and transmission method, applied in the field of network communication, can solve problems such as inability to support multi-channel parallel transmission, and achieve the effects of improving resource utilization, expanding access bandwidth, and reducing computational complexity

Inactive Publication Date: 2014-07-09
INST OF ACOUSTICS CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defect that the existing method cannot support multi-channel parallel transmission, thereby providing a method capable of realizing multi-channel transmission of downlink data

Method used

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  • HFC network downlink data multi-channel packaging and transmitting method
  • HFC network downlink data multi-channel packaging and transmitting method
  • HFC network downlink data multi-channel packaging and transmitting method

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Embodiment Construction

[0034] The present invention will now be further described with reference to the accompanying drawings.

[0035] The multi-channel encapsulation and transmission method of downlink data applied to IP over DVB of the present invention is extended on the basis of the existing IP over DVB encapsulation protocol. It is known that encapsulation methods such as ULE, MPE, and GSE are protocols that encapsulate IP, such as figure 1 As shown, the method of the present invention adds a multi-channel transmission control layer to the head of the IP packet, and then uses MPE, ULE or GSE for encapsulation, which is suitable for any encapsulation protocol among ULE, MPE and GSE. In the following examples, the method of the present invention will be described in detail by taking the MPE encapsulation protocol as an example.

[0036] figure 2 It is a schematic diagram of a two-way HFC network that can be applied to the method of the present invention. A part of the frequency of the two-way...

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Abstract

The invention relates to an HFC network downlink data multi-channel packaging and transmitting method used for an HFC network which comprises an IP two-way channel and multiple QAM one-way channels. The method includes the steps that a sending end sends information of the assigned QAM channels to a receiving end before sending data requested by a user to the receiving end; the sending end distributes data packets in the data requested by the user to the assigned QAM channels to be packaged; the assigned QAM channels transmit the packaged data packets in parallel; the receiving end receives the data on the assigned QAM channels in parallel, and sequence recovery of the data packets is achieved according to service flow identification fields and service data packet serial number fields.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a multi-channel encapsulation and transmission method of downlink data in an HFC network. Background technique [0002] In the field of IP communication, SCTP (Stream Control Transmission Protocol) is a transport layer method defined by the IETF. Through the functions of Multi-homing and Multi-streaming, between two endpoints Provide stable and orderly data delivery services. The standard SCTP method only supports multi-channel coordinated transmission in the active / standby mode, and does not support multi-channel parallel transmission, nor does it fully utilize the advantages of multiple channels. Many scholars have modified the standard SCTP method to support multi-channel parallel transmission. mechanisms, such as CMT-SCTP, LS-SCTP, etc. [0003] In the field of HFC network communication, DOCSIS (Data Over Cable Service Interface Specification, Data Over Cable Service In...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L1/16
Inventor 王劲林杨中臻郑艳伟刘学刘磊王献冠
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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