Digital baseband transport in telecommunications distribution systems
First Claim
1. A telecommunications system, comprising:
- a head end unit configured for communicating channelized digital baseband signals with remotely located units, wherein the channelized digital baseband signals include call information for wireless communication, the head end unit including;
channelizer circuitry configured for extracting, per channel, the channelized digital baseband signals, the channelizer circuitry including, per channel;
a channel filter;
an interpolator; and
a mixer associated with an oscillator; and
transport circuitry configured for formatting the channelized digital baseband signals for transport together to the remotely located units; and
a remotely located unit positionable remote from the head end unit, the remotely located unit being configured for wirelessly communicating with mobile devices, the remotely located unit comprising;
remote channelizer circuitry configured for providing, per channel, uplink channelized digital baseband signals, the remote channelizer circuitry including, per channel;
a remote channel filter;
a remote interpolator; and
a remote mixer associated with a remote oscillator; and
remote transport circuitry configured for formatting the uplink channelized digital baseband signals for transport together to the head end unit.
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Abstract
A telecommunications system is provided that includes a unit for communicating channelized digital baseband signals with remotely located units. The channelized digital baseband signals include call information for wireless communication. The unit includes a channelizer section and a transport section. The channelizer section can extract, per channel, the channelized digital baseband signals using channel filters and digital down-converters. The transport section can format the channelized digital baseband signals for transport together using a transport schedule unit for packetizing and packet scheduling the channelized digital baseband signals. A signal processing subsystem can control a gain of uplink digital baseband signals, independently, that are received from the remotely located units prior to summing the uplink digital baseband signals.
158 Citations
16 Claims
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1. A telecommunications system, comprising:
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a head end unit configured for communicating channelized digital baseband signals with remotely located units, wherein the channelized digital baseband signals include call information for wireless communication, the head end unit including; channelizer circuitry configured for extracting, per channel, the channelized digital baseband signals, the channelizer circuitry including, per channel; a channel filter; an interpolator; and a mixer associated with an oscillator; and transport circuitry configured for formatting the channelized digital baseband signals for transport together to the remotely located units; and a remotely located unit positionable remote from the head end unit, the remotely located unit being configured for wirelessly communicating with mobile devices, the remotely located unit comprising; remote channelizer circuitry configured for providing, per channel, uplink channelized digital baseband signals, the remote channelizer circuitry including, per channel; a remote channel filter; a remote interpolator; and a remote mixer associated with a remote oscillator; and remote transport circuitry configured for formatting the uplink channelized digital baseband signals for transport together to the head end unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A telecommunications system, comprising:
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a remote unit positionable remote from a head end unit and configured for communicating channelized digital baseband signals with the head end unit, the channelized digital baseband signals including call information for wireless communication, the remote unit comprising; channelizer circuitry configured for extracting, per channel, the channelized digital baseband signals, the channelizer circuitry including, per channel; a channel filter; an interpolator; and a mixer associated with an oscillator; and transport circuitry configured for formatting the channelized digital baseband signals for transport together to the head end unit, wherein the head end unit comprises; head end channelizer circuitry configured for providing, per channel, downlink channelized digital baseband signals to the remote unit and at least one other remote unit, the head end channelizer circuitry including, per channel; a head end channel filter; a head end interpolator; and a head end mixer associated with a head end oscillator; and head end transport circuitry configured for formatting the downlink channelized digital baseband signals for transport together to the remote unit. - View Dependent Claims (9, 10)
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11. A method, comprising:
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extracting channelized digital baseband signals, per channel, from digital signals using a channel filter, an interpolator, and a mixer associated with an oscillator, the channelized digital baseband signals including call information for wireless communication; communicating the digital baseband signals from a head end unit to remotely located units by formatting, using transport circuitry, the channelized digital baseband signals for transport together to the remotely located units; controlling, by signal processing circuitry that includes a summer and variable gain blocks, a gain of each of the uplink digital baseband signals independently, each of the variable gain blocks being associated with a signal envelope peak detector of a plurality of signal envelope peak detectors; digitally up-converting the uplink digital baseband signals, per channel, to produce uplink digital signals; summing the uplink digital signals to produce summed digital signals subsequent to controlling the gain of each of the uplink digital baseband signals. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification