DISTRIBUTED BASE STATION WITH ROBUST PACKET INTERFACE
First Claim
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1. A method implemented in a control node of a base station in a mobile communication network, the method comprising:
- mapping modulation symbols to respective resource elements of an OFDM signal to generate an ordered set of frequency domain data;
scrambling the frequency domain data to generate scrambled frequency domain data;
assembling the frequency domain data into two or more data packets; and
transmitting the data packets containing the frequency domain data from the control node to a transmitting node over a packet data network.
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Abstract
In an OFDM system, frequency domain processing is carried out by the control node. The frequency domain data is scrambled and transmitted over a packet-based interface to a transmitting node. The transmitting node unscrambles the frequency domain data and converts the frequency domain data to time domain data. The time domain data is used to modulate an RF carrier to generate a transmit signal for transmission over a wireless communication link to one or more mobile terminals.
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Citations
24 Claims
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1. A method implemented in a control node of a base station in a mobile communication network, the method comprising:
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mapping modulation symbols to respective resource elements of an OFDM signal to generate an ordered set of frequency domain data; scrambling the frequency domain data to generate scrambled frequency domain data; assembling the frequency domain data into two or more data packets; and transmitting the data packets containing the frequency domain data from the control node to a transmitting node over a packet data network. - View Dependent Claims (2, 3, 4)
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5. A control node in a mobile communication network, the control node comprising:
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a mapper to map modulation symbols to respective resource elements in an OFDM signal to generate an ordered set of frequency domain data; a scrambler to scramble the frequency domain data to generate scrambled frequency domain data; a packetizer to assemble the frequency domain data into two or more data packets; and an interface for transmitting the data packets from the control node to a transmitting node over a packet data network. - View Dependent Claims (6, 7, 8)
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9. A method implemented by a transmitting node in a mobile communication network, the method comprising:
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receiving, from a control node over a packet data network, scrambled frequency domain data encapsulated in two or more data packets; decapsulating the frequency domain data from said data packets; descrambling the scrambled frequency domain data to obtain an ordered set of frequency domain data mapped to respective resource elements in an OFDM signal; converting the descrambled frequency domain data to time domain data; and transmitting the time domain data over a wireless communication link to a receiving node. - View Dependent Claims (10, 11, 12)
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13. A transmitting node in a communication network, the transmitting node comprising:
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a packet interface for receiving data packets from a control node over a packet data network, said data packets containing scrambled frequency domain data; a depacketizer to decapsulate the received frequency domain data; a descrambler to descramble the scrambled frequency domain data to obtain an ordered set of modulation symbols mapped to respective resource elements in an OFDM signal; a transform processor to convert the descrambled frequency domain data to a time domain signal; and a transmitter to transmit the time domain signal over the communication network to a receiving node. - View Dependent Claims (14, 15, 16)
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17. A method implemented by a distributed base station in a mobile communication network, the method comprising:
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mapping, by a control node, modulation symbols to respective resource elements of an OFDM signal to generate an ordered set of frequency domain data; scrambling, by the control node, the frequency domain data to generate scrambled frequency domain data; transmitting the frequency domain data from the control node to a transmitting node in one or more data packets over a packet data network; descrambling, by the transmitting node, the scrambled frequency domain data to obtain an ordered set of frequency domain data mapped to respective resource elements in an OFDM signal; converting, by the transmitting node, the descrambled frequency domain data to time domain data; and transmitting, by the transmitting node, the time domain data over a wireless communication link to a receiving node. - View Dependent Claims (18, 19, 20)
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21. A base station in a mobile communication network, the base station comprising:
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a control node including; a mapper to map modulation symbols to respective resource elements in an OFDM signal to generate an ordered set of frequency domain data; a scrambler to scramble the frequency domain data to generate scrambled frequency domain data; a packet interface for transmitting the frequency domain data from the control node to a transmitting node in one or more data packets over a packet data network; and a transmitting node including; a packet interface for receiving data packets from a control node over a packet data network, said data packets containing scrambled frequency domain data; a descrambler to descramble the scrambled frequency domain data to obtain an ordered set of modulation symbols mapped to respective resource elements in an OFDM signal; a transform processor to convert the descrambled frequency domain data to a time domain signal; and a transmitter to transmit the time domain signal over the communication network to a receiving node. - View Dependent Claims (22, 23, 24)
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Specification