Feedback for data transmissions
First Claim
1. A method for reducing a feedback delay over a forward link at a mobile station, comprising:
- receiving and decoding a first data packet wherein the first data packet is transmitted from a base station;
scheduling an acknowledgment signal for the first data packet over a first transmission slot and a re-transmission of the first data packet acknowledgment signal over a second slot;
receiving and decoding a second data packet wherein the second data packet is transmitted from the base station;
scheduling an acknowledgement signal for the second data packet over the second slot, wherein the acknowledgment signal for the second data packet overwrites the scheduled re-transmission of the first data packet acknowledgment signal; and
transmitting the acknowledgment for the first data packet over the first transmission slot and transmitting the acknowledgment for the second data packet over the second transmission slot.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatus are presented for dynamically controlling the re-transmission scheme of acknowledgment signals. A source transmits a first data packet over a slot s1. If channel conditions are favorable, source transmits a second data packet over slot s2, which precedes the reception of any acknowledgment signals. A destination receives first data packet over slot d1 and second data packet over slot d2. Destination decodes first data packet during slots d2 and d3, and second data packet over slots d3 and d4. Destination transmits an acknowledgment signal (ACK1) associated with first data packet during slot d4. Rather then transmitting the second ACK1 associated with first data packet over slot d5, destination preempts this slot with an acknowledgment signal ACK2, which is associated with second data packet transmitted by source. Hence, destination is configured to overwrite the repetition of a previous acknowledgment in order to transmit a new acknowledgment.
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Citations
20 Claims
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1. A method for reducing a feedback delay over a forward link at a mobile station, comprising:
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receiving and decoding a first data packet wherein the first data packet is transmitted from a base station; scheduling an acknowledgment signal for the first data packet over a first transmission slot and a re-transmission of the first data packet acknowledgment signal over a second slot; receiving and decoding a second data packet wherein the second data packet is transmitted from the base station; scheduling an acknowledgement signal for the second data packet over the second slot, wherein the acknowledgment signal for the second data packet overwrites the scheduled re-transmission of the first data packet acknowledgment signal; and transmitting the acknowledgment for the first data packet over the first transmission slot and transmitting the acknowledgment for the second data packet over the second transmission slot. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile station which reduces a feedback delay over a forward link for packet data communications, comprising:
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means for receiving and decoding a first data packet, wherein the first packet is transmitted from a base station; means for scheduling an acknowledgment signal for the first data packet over a first transmission slot and a re-transmission of the first data packet acknowledgment signal over a second slot; means for receiving and decoding a second data packet, wherein the second packet is transmitted from the base station; means for scheduling an acknowledgement signal for the second data packet over the second slot, wherein the acknowledgment signal for the second data packet overwrites the scheduled re-transmission of the first data packet acknowledgment signal; and means for transmitting the acknowledgment for the first data packet over the first transmission slot and transmitting the acknowledgment for the second data packet over the second transmission slot. - View Dependent Claims (7, 8, 9, 10)
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11. A mobile station which reduces feedback delay over a forward link for packet data communications, comprising;
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a memory element; and a processing element which executes a set of instructions stored within the memory element, wherein the set of instructions cause the mobile station to receive and decode a first data packet, wherein the first data packet is transmitted from a base station, schedule an acknowledgment signal for the first received data packet over a first transmission slot and are transmission of the first data packet acknowledgment signal over a second slot, receive and decode a second data packet, wherein the second data packet is transmitted from the base station, schedule an acknowledgement signal for the second data packet over the second slot, wherein the acknowledgment signal for the second data packet overwrites the scheduled re-transmission of the first data packet acknowledgment signal, and transmit the acknowledgment for the first data packet over the first transmission slot and transmitting the acknowledgment for the second data packet over the second transmission slot. - View Dependent Claims (12, 13, 14, 15)
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16. A computer readable media embodying instructions for reducing a feedback delay over a forward link at a mobile station, the instructions configured to perform a method which comprises:
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receiving and decoding a first data packet, wherein the first data packet is transmitted from a base station; scheduling an acknowledgment signal for the first data packet over a first transmission slot and a re-transmission of the first data packet acknowledgment signal over a second slot; receiving and decoding as second data packet, wherein the second data packet is transmitted from the base station; scheduling an acknowledgement signal for the second data packet over the second slot, wherein the acknowledgment signal for the second data packet overwrites the scheduled re-transmission of the first data packet acknowledgment signal; and transmitting the acknowledgment for the first data packet over the first transmission slot and transmitting the acknowledgment for the second data packet over the second transmission slot. - View Dependent Claims (17, 18, 19, 20)
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Specification