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DBA (dynamic bandwidth allocation) method of TDMA (time division multiple address) in EOC system realizing C-HPAV standard

A C-HPAV, standard technology, applied in electrical components, wireless communication and other directions, can solve the problems of unreasonable allocation and low bandwidth utilization, achieve timely and effective allocation, improve system data throughput and network bandwidth utilization. Effect

Inactive Publication Date: 2014-01-29
BEIJING GAN TONG TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The main purpose of the present invention is to provide a method for implementing DBA based on network traffic prediction, solve the problems of low bandwidth utilization and unreasonable allocation, and improve the system data throughput and bandwidth utilization

Method used

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  • DBA (dynamic bandwidth allocation) method of TDMA (time division multiple address) in EOC system realizing C-HPAV standard
  • DBA (dynamic bandwidth allocation) method of TDMA (time division multiple address) in EOC system realizing C-HPAV standard

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Embodiment Construction

[0015]

[0016] Step 1:

[0017] When the CLT allocates TDMA time slots to each CNU in the EOC network, the CLT establishes a statistics table for recording the number of PBs sent in each cycle of N consecutive communication cycles for each CNU. The CLT monitors the number of PBs sent and received by each CNU in each cycle, and records them in the statistical table.

[0018]

[0019] Step 2:

[0020] At the starting point of each communication cycle, CLT checks the statistical table of each CNU, performs weighted average calculation on the recorded values ​​in the table, and obtains the predicted value of the PB bibliography sent by the CNU in the next communication cycle. Taking K communication cycles as the time length for statistical prediction as an example, the specific steps are as follows:

[0021] The number of PBs sent by the CNU in the first K communication cycles are: N 1 , N 2 ,…N K , take K weighting coefficients as: f 1 , f 2 ,… f K ,The following condi...

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Abstract

The invention discloses a DBA (dynamic bandwidth allocation) algorithm for realizing TDMA (time division multiple address) access in a C-HPAV network communication system realizing the community antenna television broadband access EOC standard of the State Administration of Radio, Film and Television through a cross-layer network flow predicting method. The method includes that on the basis of a C-HPAV system architecture, during TDMA time slot DBA, in a CLT (coax line terminal), and for each CNU (coax network unit), namely an EOC terminal, an MAC layer records the number of physical layer PBs sent by uplink and downlink of each period of the CNU in continuous N communication periods, a sequence of the number of the physical layer PBs counted by the MAC layer in first N communication periods is taken as a sample, the sequence is subjected to weighted averaging to acquire a prediction value of the number of the physical layer PBs sent by the CNU in the N+1th communication period, the prediction value is taken as a basis for bandwidth allocation of the MAC layer, and self-adaptive dynamic bandwidth allocation is realized.

Description

technical field [0001] The present invention relates to the field of EOC communication of cable TV network broadband access, in particular to the DBA method of EOC system TDMA based on Chinese cable TV broadband access C-HPAV standard; Background technique [0002] With the rapid development of people's demand for networks and the increasingly rich services and applications carried on the network, strengthening the cable TV two-way network construction is a problem that cable TV operators urgently need to solve for the next generation broadcast network (NGB). The core key technology of NGB is the two-way cable TV network, that is, the broadband access technology for home users based on the cable TV network - EOC. EOC is a broadband network access technology that transmits the last 100 meters of Ethernet data signals through cable television coaxial cables. Through EOC technology, the coaxial cable can transmit Ethernet data while transmitting CATV analog TV and digital TV s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/12H04W74/08H04W72/54
Inventor 杨振杨佳杨云隆
Owner BEIJING GAN TONG TECH
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