ACK/NACK TRANSMISSION ON PUCCH IN LTE-ATDD WITH NXPDCCH STRUCTURE
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Abstract
Systems and methods are provided for enabling different “bundling” methods for downlink transmissions and provide different interpretations of the acknowledgement/negative-acknowledgement bit. A user equipment is configured so that it commonly acknowledges all downlink transmission time intervals within a bundle so that if one packet is determined to be erroneous, all packets in that bundle will be retransmitted. Additionally, the systems and methods are implemented by allowing an interpretation to be applied to the uplink acknowledgement/negative-acknowledgement field such that the user equipment is able to divide bundled downlink packets into smaller windows in Long Term Evolution (LTE) Release 8 time division duplex (TDD) mode. In LTE Advanced (LTE-A) TDD mode, various embodiments provide bundling within the time domain, within the frequency domain, and within a hybrid time-frequency domain. Furthermore, enhanced channel selection methods are also provided in support of the above-mentioned bundling methods in accordance with various embodiments.
95 Citations
68 Claims
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1-48. -48. (canceled)
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49. A method of signaling, comprising:
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determining a type of a received transmission stream; receiving information to use one of two acknowledgment/negative-acknowledgment fields and a single acknowledgment/negative-acknowledgment field for the received transmission stream; upon receiving the information to use the two acknowledgment/negative-acknowledgment fields, determining whether to divide the received transmission stream; and sending the two acknowledgment/negative-acknowledgment fields for the received transmission stream. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58)
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59. An apparatus, comprising:
a processor configured to; determine a type of a received transmission stream, wherein the received transmission stream includes at least one of a plurality of bundled subframes and a plurality of bundled chunks; determine an acknowledgement/negative-acknowledgement channel selected for transmission of at least one acknowledgement/negative-acknowledgement in response to the at least one of the plurality of bundled subframes and the plurality of bundled chunks, wherein the channel is selected based upon at least one of a mapping table, a chunk number, and a subframe number; and generate the at least one acknowledgement/negative-acknowledgement. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68)
Specification