Method and Arrangement in a Communication System
1 Assignment
0 Petitions
Accused Products
Abstract
Method and arrangement in a terminal for receiving data packets from a base station and providing feedback to the base station. The feedback concerns the reception status of the received data packets and may comprise an ACK/NAK. The method comprises receiving and decoding data packets from the base station in a sub-frame. It is further established whether any data packet within the received subframe is not correctly received and detected whether any subframe, expected to be received, has been missed. Further, acknowledgement information ACK/NAK is generated, a scrambling code selected with which the ACK/NAK is scrambled. The scrambled ACK/NAK is then sent to the base station, concerning the reception status of the data packets within the received subframes.
92 Citations
33 Claims
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1-13. -13. (canceled)
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14. A method in a terminal for providing acknowledgement or non-acknowledgement (ACK/NACK) information to a base station concerning the reception status of one or more data packets received in one or more subframes from the base station, the method comprising:
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generating ACK/NACK information to be sent to the base station, selecting a scrambling code, scrambling the generated ACK/NACK information with the selected scrambling code, and sending the scrambled ACK/NACK information to the base station. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An arrangement in a terminal for providing acknowledgement or non-acknowledgement (ACK/NAK) information to a base station concerning the reception status of data packets received in a subframe from the base station, the arrangement comprising:
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a generating unit configured to generate ACK/NACK information to be sent to the base station, a selecting unit configured to select a scrambling code, a scrambling unit configured to scramble the generated ACK/NACK information with the selected scrambling code, and a sending unit configured to send the scrambled ACK/NACK information to the base station. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. A method in a base station for receiving acknowledgement information or non-acknowledgement information from a terminal concerning the reception status of one or more data packets previously sent in one or more subframes to the terminal, the method comprising:
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receiving from the mobile terminal scrambled information comprising acknowledgement or non-acknowledgement (ACK/NACK) information, selecting a scrambling code, descrambling the received scrambled ACK/NACK information using the selected scrambling code, determining if the descrambled ACK/NACK information comprises acknowledgement information, confirming that all data packets within the sent subframes have been correctly received by the terminal and that no subframe, expected to be received by the terminal, has been missed, and if the descrambled ACK/NACK information does not comprise acknowledgement information, resending the data packets associated with said descrambled information.
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33. An arrangement in a base station for receiving acknowledgement information or non-acknowledgement (ACK/NACK) information from a terminal concerning the reception status of one or more data packets previously sent in one or more subframes to the terminal, the arrangement comprising:
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a receiving unit configured to receive from the mobile terminal scrambled ACK/NACK information comprising either acknowledgement information or non-acknowledgement information, a selecting unit configured to select a scrambling code, a descrambler configured to descramble the received scrambled ACK/NACK information using the selected scrambling code, a determination unit configured to determine if the descrambled ACK/NACK information comprises acknowledgement information, confirming that all data packets within the sent subframes have been correctly received by the terminal and that no subframe, expected to be received by the terminal, has been missed, and a sending unit configured to resend data packets associated with said descrambled ACK/NACK information to the terminal, if the descrambled ACK/NACK information does not comprise acknowledgement information.
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Specification