Method for base station compressing and transmitting high speed data
First Claim
1. In a telecommunication base station, a method of receiving a plurality of telephone signals and for transmitting each of the telephone signals on a respective communication channel, wherein each communication channel is formed on at least one transmit radio frequency (RF) carrier, each RF carrier having a plurality of information slots and at least one of the information slots is assigned to one of the telephone signals so that the one of the telephone signals is modulated on the RF carrier;
- the method comprising the steps of;
a) receiving and monitoring each of the telephone signals to detect a data signal in one of the telephone signals, wherein at least one of said telephone signal is a reconstructed telephone signal having a response data signal from a received RF carrier, each reconstructed telephone signal and each respective telephone signal being a channel pair; and
the data signal has a corresponding data signal identification of a first type, and the response data signal has a corresponding data signal identification of a second type;
b) encoding the data signal to generate a coded signal;
c) checking an assignment status of the information slots responsive to detection of the data signal, the assignment status indicating whether each carrier and each information slot is unassigned or assigned to another one of the telephone signals;
d) locating a predetermined number of unassigned sequential information slots;
e) forming the communication channel from the unassigned sequential information slots; and
f) modulating the coded signal on the communication channel;
whereby the receiving and monitoring step a) further includes inhibiting the data signal identification of the first type until the forming step e) forms the communication channel.
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Abstract
Two related voiceband compression techniques are employed in order to enable an RF telecommunications base station to accommodate data signals of high speed voiceband modems and FAX machines. A High Speed Codec enables the base station to pass voiceband modem and FAX transmissions at up to 9.6 kb/s. An Ultra-High Speed Codec supports voiceband modem and FAX transmissions up to 14.4 kb/s. The High Speed Codec operates using three 16-phase RF slots or four 8-phase RF slots, and the Ultra-High Speed Codec operates using four 16-phase RF slots. Because these codecs transmit information over several RF slots which can be contiguous, the slots within RF communication channels are dynamically allocated. The Dynamic Time slot/Bandwidth Allocation feature detects and monitors the data transmission and forms a data channel from the necessary number of slots.
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Citations
10 Claims
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1. In a telecommunication base station, a method of receiving a plurality of telephone signals and for transmitting each of the telephone signals on a respective communication channel, wherein each communication channel is formed on at least one transmit radio frequency (RF) carrier, each RF carrier having a plurality of information slots and at least one of the information slots is assigned to one of the telephone signals so that the one of the telephone signals is modulated on the RF carrier;
- the method comprising the steps of;
a) receiving and monitoring each of the telephone signals to detect a data signal in one of the telephone signals, wherein at least one of said telephone signal is a reconstructed telephone signal having a response data signal from a received RF carrier, each reconstructed telephone signal and each respective telephone signal being a channel pair; and
the data signal has a corresponding data signal identification of a first type, and the response data signal has a corresponding data signal identification of a second type;
b) encoding the data signal to generate a coded signal;
c) checking an assignment status of the information slots responsive to detection of the data signal, the assignment status indicating whether each carrier and each information slot is unassigned or assigned to another one of the telephone signals;
d) locating a predetermined number of unassigned sequential information slots;
e) forming the communication channel from the unassigned sequential information slots; and
f) modulating the coded signal on the communication channel;
whereby the receiving and monitoring step a) further includes inhibiting the data signal identification of the first type until the forming step e) forms the communication channel. - View Dependent Claims (2, 3)
- the method comprising the steps of;
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4. In a telecommunications base station, a method of receiving a plurality of telephone signals and for transmitting each of the telephone signals on a respective communication channel, wherein each communication channel is formed on at least one transmit radio frequency (RF) carrier, each RF carrier having a plurality of information slots and at least one of the information slots is assigned to one of the telephone signals so that one of the telephone signals is modulated on the RF carrier whereby the telephone signals may include a data signal of a low speed type, a high speed type or an ultra high speed type;
- the method comprising the steps of;
a) receiving and monitoring each of the telephone signals to detect a data signal in one of the telephone signals and determine the speed type of the data signal;
b) encoding the data signal to generate a coded signal;
c) checking an assignment status of the information slots responsive to detection of the data signal, the assignment status indicating whether each carrier and each information slot is unassigned or assigned to another one of the telephone signals;
d) locating a predetermined number of unassigned sequential information slots, the predetermined number being a first number for a low speed type, a second number for a high speed type and a third number for an ultra high speed type;
e) forming the communication channel from the unassigned sequential information slots; and
f) modulating the coded signal on the communication channel. - View Dependent Claims (5, 6, 7)
- the method comprising the steps of;
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8. In a telecommunications base station, a method for processing a plurality of telephone signals on a respective communication channel, wherein each communication channel is formed from at least one of a plurality of information slots on a radio frequency (RF) carrier;
- the method comprising the steps of;
a) receiving and monitoring each of the telephone signals to detect a data signal in one of the telephone signals, wherein at least one of said telephone signals is a reconstructed telephone signal having a response data signal from a received RF carrier, each reconstructed telephone signal and each respective telephone signal being a channel pair; and
the data signal has a corresponding data signal identification of a first type, and the response data signal has a corresponding data signal identification of a second type;
b) encoding the data signal to generate a coded signal;
c) assigning an assignment status of to each carrier and each information slot with respect to a telephone signal;
d) selecting a predetermined number of unassigned sequential information slots;
e) forming the communication channel from the unassigned sequential information slots; and
f) modulating the coded signal on the communication channel;
whereby the receiving and monitoring step a) further includes inhibiting the data signal identification of the first type until the forming step e) forms the communication channel. - View Dependent Claims (9, 10)
- the method comprising the steps of;
Specification