Method and apparatus for sub-slot packets in wireless communication
First Claim
1. An apparatus for sub-slot packet communication comprising:
- a receiver to receive channel information from a remote station, the channel information including ACK/NACK (acknowledgement/negative acknowledgement) information;
at least one processor configured to;
generate an output waveform comprising at least one slot, each slot segmented into two half-slots, wherein at least one half-slot includes at least a portion of a packet; and
interpret the ACK/NACK information to determine if the packet should be resent to the remote station;
wherein the output waveform is compatible with that of a legacy system based on transmissions on full slots, and wherein at least one half-slot of the output waveform comprises;
(A) at least one traffic segment, at a center of the half-slot, that carries an integer number of orthogonal frequency division multiplexing (OFDM) data symbols; and
(B) at least one overhead segment, at the center of the half-slot, that has a duration equal to a duration of said traffic segment and includes a pilot segment;
a memory coupled to the at least one processor; and
a transmitter configured for transmitting the output waveform.
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Accused Products
Abstract
Techniques for efficiently sending and receiving data in a wireless communication system are described herein. The techniques utilize a slot structure that is backward compatible with existing design. The techniques include sending and receiving forward link packets that occupy less than a full slot of the slot structure. An output waveform, which includes at least one slot, is generated at an access point. Each slot is segmented into two half-slots, wherein at least one half-slot includes a data unit of a packet. At a terminal, the output waveform is received and processed to extract the data unit and the data unit is processed to determine whether it is accurate. The terminal also generates ACK/NACK information in response to the results of processing the data unit and transmits channel information including the ACK/NACK information. The access point interprets the ACK/NACK information to determine if the data unit should be resent.
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Citations
53 Claims
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1. An apparatus for sub-slot packet communication comprising:
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a receiver to receive channel information from a remote station, the channel information including ACK/NACK (acknowledgement/negative acknowledgement) information; at least one processor configured to; generate an output waveform comprising at least one slot, each slot segmented into two half-slots, wherein at least one half-slot includes at least a portion of a packet; and interpret the ACK/NACK information to determine if the packet should be resent to the remote station; wherein the output waveform is compatible with that of a legacy system based on transmissions on full slots, and wherein at least one half-slot of the output waveform comprises; (A) at least one traffic segment, at a center of the half-slot, that carries an integer number of orthogonal frequency division multiplexing (OFDM) data symbols; and (B) at least one overhead segment, at the center of the half-slot, that has a duration equal to a duration of said traffic segment and includes a pilot segment; a memory coupled to the at least one processor; and a transmitter configured for transmitting the output waveform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 46, 47, 48, 52)
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14. A method for sub-slot packet communication comprising:
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receiving channel information from a remote station, the channel information including ACK/NACK (acknowledgement/negative acknowledgement) information; generating an output waveform comprising at least one slot, each slot segmented into two half-slots, wherein at least one half-slot includes at least a portion of a packet; interpreting the ACK/NACK information to determine if the packet should be resent to the remote station; and transmitting the output waveform, wherein the output waveform is compatible with that of a legacy system based on transmissions on full slots, and wherein at least one half-slot of the output waveform comprises; (A) at least one traffic segment, at a center of the half-slot, that carries an integer number of orthogonal frequency division multiplexing (OFDM) data symbols; and (B) at least one overhead segment, at the center of the half-slot, that has a duration equal to a duration of said traffic segment and includes a pilot segment. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 49, 50, 51, 53)
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27. An apparatus for sub-slot packet communication comprising:
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means for receiving channel information from a remote station, the channel information including ACK/NACK (acknowledgement/negative acknowledgement) information; means for generating an output waveform comprising at least one slot, each slot segmented into two half-slots, wherein at least one half-slot includes at least a portion of a packet; means for interpreting the ACK/NACK information to determine if the packet should be resent to the remote station; and means for transmitting the output waveform, wherein the output waveform is compatible with that of a legacy system based on transmissions on full slots, and wherein at least one half-slot of the output waveform comprises; (A) at least one traffic segment, at a center of the half-slot, that carries an integer number of orthogonal frequency division multiplexing (OFDM) data symbols; and (B) at least one overhead segment, at the center of the half-slot, that has a duration equal to a duration of said traffic segment and includes a pilot segment. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A computer program product embodied on a non-transitory computer-readable storage medium and comprising code that, when executed, causes a computer to perform the following:
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receiving channel information from a remote station, the channel information including ACK/NACK (acknowledgement/negative acknowledgement) information; generating an output waveform comprising at least one slot, each slot segmented into two half-slots, wherein at least one half-slot includes at least a portion of a packet; interpreting the ACK/NACK information to determine if the packet should be resent to the remote station; and transmitting the output waveform, wherein the output waveform is compatible with that of a legacy system based on transmissions on full slots, and wherein at least one half-slot of the output waveform comprises; (A) at least one traffic segment, at a center of the half-slot, that carries an integer number of orthogonal frequency division multiplexing (OFDM) data symbols; and (B) at least one overhead segment, at the center of the half-slot, that has a duration equal to a duration of said traffic segment and includes a pilot segment. - View Dependent Claims (41, 42, 43, 44, 45)
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Specification