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Contention resolution for CATV with reduced waiting time variance

A solved, message technology, applied in the field of systems that transmit multiple messages, can solve problems such as latency impact

Inactive Publication Date: 2005-01-19
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difference in latency to complete conflict resolution is an important quality characteristic that affects the quality of service perceived by users

Method used

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  • Contention resolution for CATV with reduced waiting time variance
  • Contention resolution for CATV with reduced waiting time variance
  • Contention resolution for CATV with reduced waiting time variance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] figure 1 The construction of cable TV broadband network is illustrated. Headend (H / E) 100 is connected to cable stations 102 to 114 via downstream communication channel 116 and upstream communication channel 118 . Each cable station 102-104 is physically connected to a digital communication channel through its cable modem (not shown). The cable modem does the actual data transmission. Thus, while the cable station is described as sending and receiving data, it is the cable modem that actually performs the transmission. The cable modem connects to the H / E100 through the same cable TV cable that is used to watch normal analog TV. Data transmission from cable stations 102-114 to H / E 100 occupies multiple frequency bands. Each such frequency band is called an uplink or return channel 118 . Data transmission from H / E 100 to cable stations 102-114 occupies a number of different frequency bands. Each such frequency band is referred to as a downlink communication channel ...

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PUM

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Abstract

A method and system of transmitting messages include requesting to submit a first request for transmitting a first message and to submit a second request for transmitting a second message until there is no first collision detected between the submitted first and second requests upon receipt of the submitted first and second requests. Before there is no first collision detected between the submitted first and second requests, it is requested to submit a third request for transmitting a third message and to submit a fourth request for transmitting a fourth message. However, requesting to re-submit the third request for transmitting the third message and to re-submit the fourth request for transmitting the fourth message if a second collision is detected between the submitted third and the second requests upon receipt thereof is delayed until there is no first collision detected between the submitted first and second requests.

Description

technical field [0001] The invention relates to a method of transmitting a plurality of messages, the plurality of messages being transmitted on a communication channel, the method comprising: [0002] Requesting to submit a first request for transmission of a first message of the plurality of messages and submitting a second request for transmission of a second message of the plurality of messages until the submitted first and second requests are received at the submitted No first conflict is detected between the first request and the submitted second request. [0003] Moreover, the invention also relates to a system for transmitting a plurality of messages over a communication channel, the system comprising: [0004] First requesting means for requesting submission of a first request for transmission of a first message of the plurality of messages and submission of a second request for transmission of a second message of the plurality of messages, until receiving the submit...

Claims

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Application Information

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IPC IPC(8): H04N7/10H04L12/28H04L12/825H04N5/00H04N7/173
CPCH04N21/26216H04L47/25H04N21/2385H04N7/17309H04N21/2393H04N21/2221H04N7/10
Inventor T·J·J·登特尼尔E·B·赫克斯特拉-诺瓦卡S·P·P·普伦克L·M·G·M·托休泽
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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