Method for controlling data transmission in a radio communications system
First Claim
1. A method for controlling transmission of data in a radio communication system comprising:
- generating a response signal which includes first information indicating whether an error is present in the data of a radio frame as received by a receiver and a second information indication of reception quality of the data of a radio frame, and transmitting the response signal from the receiver to a transmitter which transmitted the data.
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Accused Products
Abstract
A method for controlling the transmission of data in a radio communications system transmits response signals from a receiver which includes information that reflects received signal quality, as well as information indicating whether an error has occurred in the data transmission. In one case, acknowledgment signals or negative acknowledgment signals may be regarded as no reply and not forwarded to a transmitter. In another case, the signals could be recognized as an acknowledgment or retransmission request by a receiver. Preferably, the signals transmitted from the receiver to the transmitter are composed of more than 2-bit multiplexed information. By transmitting response signals of this type, the transmission efficiency of packet data may be increased, and the automatic repeat request (ARQ) performance by the system may be greatly improved.
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Citations
47 Claims
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1. A method for controlling transmission of data in a radio communication system comprising:
- generating a response signal which includes first information indicating whether an error is present in the data of a radio frame as received by a receiver and a second information indication of reception quality of the data of a radio frame, and transmitting the response signal from the receiver to a transmitter which transmitted the data.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20)
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13. A method for controlling data transmission in a radio communication system comprising:
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receiving packet data;
if an error is determined to exist in the packet data, then determining reception quality of the packet data;
comparing the reception quality with a predetermined reception quality; and
transmitting a negative acknowledgment (NAK) signal in accordance with a result of the comparing step.
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21. A method for controlling data transmission in a radio communication system comprising:
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determining whether received packet data has an error;
processing an acknowledgment signal as no reply if the packet data does not have an error;
comparing a reception quality of the packet data with a predetermined reception quality if the packet data has an error; and
transmitting an negative acknowledgment (NAK) signal with information indicating the reception quality. - View Dependent Claims (22, 23, 24, 25, 26, 28, 29, 30)
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27. A method for controlling data transmission in a radio communication system determining, in a transmitter, whether a receiver of packet data has transmitted a response signal;
- if no response signal is received from the receiver for a certain amount of time, recognizing the failure to receive the response signal in the transmitter as one of an acknowledgment (ACK) and a negative acknowledgment (NAK) signal, but if the response signal is received, the transmitter recognizes the response signal as a NAK signal including information indicating a reception quality situation.
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31. A method for controlling data transmission in a radio communication system, comprising:
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processing an acknowledgment signal (ACK) as no reply if no error is found in transmitted packet data received by a receiver;
determining a degree of a reception quality if the packet data is determined to have an error;
transmitting a negative acknowledgment (NAK) signal if the reception quality is in a good condition;
transmitting a NAK signal including information indicative of the reception quality if the reception quality is determined to be in a poor condition; and
transmitting packet data reflecting each signal from the transmitter. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39)
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32. A method for controlling data transmission in a radio communication system, comprising:
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processing an acknowledgment signal (ACK) as no reply if no error is found in transmitted packet data received by a receiver;
determining a degree of a reception quality if the packet data is determined to have error;
transmitting a negative acknowledgment (NAK) signal if the reception quality is determined to be in a poor condition;
transmitting a NAK signal including information indicative of the reception quality if the reception quality is in a good condition; and
transmitting packet data reflecting each signal at the transmitter.
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40. A method for controlling data transmission in a radio communication system, comprising:
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transmitting an acknowledgment (ACK) signal if no error is found in transmitted packet data received by a receiver;
determining a degree of a reception quality if the packet data is determined to have an error;
processing a negative acknowledgment (NAK) signal as no reply if the reception quality is in a good condition;
transmitting, at the receiver, a negative acknowledgment (NAK) signal including information indicative of the reception quality if the reception quality is in a poor condition; and
transmitting the packet data reflecting each signal at the transmitter.
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41. A data retransmission feedback method in a retransmission feedback system comprising:
- determining whether packet data received by a receiver has an error;
if the packet data has an error, and sending a negative acknowledgment (NAK) signal from the receiver to the transmitter which transmitted the packet data to request retransmission of the packet data, wherein the negative acknowledgment signal includes multiplexed information based on degree of a reception quality. - View Dependent Claims (42, 43, 44, 45, 46)
- determining whether packet data received by a receiver has an error;
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47. A terminal, comprising:
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means for sending or receiving information through a physical layer; and
means for sending or receiving information though a protocol layer;
wherein said means for sending or receiving information through the protocol layer carries information indicative of a reception quality of a transmitted signal.
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Specification