Method and apparatus for interference mitigation via successive cancellation in heterogeneous networks
First Claim
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1. A method comprising:
- obtaining, at a WTRU, demodulation information associated with a private part, a first common part and a second common part, the private part encoded at a rate that the WTRU is capable of decoding and other WTRUs are incapable of decoding, the first common part encoded at a rate that the WTRU and the other WTRUs are capable of decoding, and the second common part encoded at a rate that the WTRUS are capable of decoding;
processing a received signal, according to the demodulation information, including at least the first common part received from a first base station, the second common part received from a second base station, and the private part received from the first base station; and
,transmitting a multipart hybrid automatic repeat request (HARQ) message indicating a combination of acknowledgements and/or non-acknowledgements (ACK/NACK) for the first common part, second common part, and private part.
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Abstract
Techniques for inter-cell interference cancellation are disclosed. At each transmitter, the data (message) may split into two or more layers, (e.g., common and private parts), and may be encoded in different rates, allocated with different powers, possibly beamformed using different precoders, and transmitted through the same physical channels. The common part is to be decoded at both the intended and unintended users, while the private part is to be decoded at the intended user.
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Citations
19 Claims
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1. A method comprising:
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obtaining, at a WTRU, demodulation information associated with a private part, a first common part and a second common part, the private part encoded at a rate that the WTRU is capable of decoding and other WTRUs are incapable of decoding, the first common part encoded at a rate that the WTRU and the other WTRUs are capable of decoding, and the second common part encoded at a rate that the WTRUS are capable of decoding; processing a received signal, according to the demodulation information, including at least the first common part received from a first base station, the second common part received from a second base station, and the private part received from the first base station; and
,transmitting a multipart hybrid automatic repeat request (HARQ) message indicating a combination of acknowledgements and/or non-acknowledgements (ACK/NACK) for the first common part, second common part, and private part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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a WTRU including a processor, configured to; obtain demodulation information associated with a private part, a first common part and a second common part, the private part encoded at a rate that the WTRU is capable of decoding and other WTRUs are incapable of decoding, the first common part encoded at a rate that the WTRU and the other WTRUs are capable of decoding, and the second common part encoded at a rate that the WTRUS are capable of decoding; process a received signal, according to the demodulation information, including at least the first common part received from a first base station, the second common part received from a second base station, and the private part received from the first base station; and
,control a HARQ process and generate a multipart HARQ message indicating a combination of acknowledgements and/or non-acknowledgements (ACK/NACK) for the first common part, second common part, and private part; and
,a transceiver configured to transmit the multipart HARQ message. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification