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Management system and method for managing time division duplex (tdd) transmission over copper

A data communication system and time slot technology, applied in the field of data transmission, can solve the problems of idle height and underutilization of broadband data communication systems

Inactive Publication Date: 2018-09-21
ADAPTIVE SPECTRUM & SIGNAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Broadband data communication systems are often idle or highly underutilized, and current practice is often to transmit idle codes at full power when there is no data traffic

Method used

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  • Management system and method for managing time division duplex (tdd) transmission over copper
  • Management system and method for managing time division duplex (tdd) transmission over copper
  • Management system and method for managing time division duplex (tdd) transmission over copper

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Embodiment Construction

[0022] Embodiments of the present invention may provide a management system for systems utilizing time division duplex (TDD) transmission over cables. The management system receives input data regarding service levels, traffic, power, and other requirements. TDD slot allocation, idle time, and asymmetry are then determined for optimal performance, minimum traffic delay, and minimum power usage. Each TDD frame is flexible and does not need to follow a fixed pattern.

[0023] One way to avoid self-NEXT is to synchronize the transmissions on the two lines so that one line does not transmit downstream while the other line is transmitting upstream. This is especially important for TDD systems with multiple channels using the same multiple pairs of cable connectors.

[0024] Figure 4 is showing two different channels (line 1 ,line 2 ) on a TDD frame (frame 1 ,frame 2 ), two different channels are close enough to create a NEXT 41, 42 in each other's lines. Frames are shown a...

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Abstract

Manages time-division multiplexed transmissions on copper physical channels. In an example, uplink time slots in the first physical channel are scheduled for uplink transmission, and downlink time slots in the second physical channel are scheduled for downlink transmission. Transmissions in the uplink time slots are substantially out of time with transmissions in the downlink time slots.

Description

technical field [0001] The present invention description relates to the field of data transmission in channels subject to crosstalk and, in particular, to the allocation of scheduled time slots for such channels. Background technique [0002] TDD (Time Division Duplex) system transmits downlink (network to user) data and uplink (user to network) data in different time slots of the same physical channel. In addition, there is usually a short guard time between different time slots to ensure that data does not overlap. A new TDD system called "G.fast" is currently in the standardization process of the ITU-T (International Telecommunication Union-Telecommunications Standardization Organization). G.fast is used for transmission on relatively short (<250m) copper telephone loops and integrated wiring. [0003] figure 1 It is a time slot diagram on the horizontal time axis of a typical TDD system. In different uplink (Down) and downlink (Up) TDD time slots, the downlink tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M11/06H04B3/32
CPCH04M11/062H04B3/32H04B3/487H04J3/10H04L5/14
Inventor 肯尼斯·凯佩乔治斯·吉尼斯马克·戈尔德堡阿尔达瓦尼斯·马利基·德黑兰尼
Owner ADAPTIVE SPECTRUM & SIGNAL