Abstract
A method device and computer program product for transmitting data blocks in an LTE or similar wireless communication system supporting HARQ and TTI bundling with dynamic TTI bundle sizing is provided. Each TTI bundle includes a number of redundancy versions of a data block for example differently encoded versions of the data block which can be combined together in accordance with Type-II HARQ. Plural TTI bundles can be transmitted as necessary in accordance with HARQ for example in response to a NACK. The present technology involves adjusting the TTI bundle size for a given HARQ process wherein at least two TTI bundles have different sizes. In various embodiments the TTI bundle size progressively decreases with retransmissions so that the last TTI bundle is not excessively large thereby reducing resource waste. TTI bundle size adjustment may be implemented in the uplink downlink or both.
Technologies
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Product
Use Cases
Wireless communication
Services
Claim
1. A method for transmitting a block of data from a transmitter to a receiver in a wireless communication system supporting HARQ and TTI bundling, the method comprising:', 'a) transmitting a TTI bundle from the transmitter to the receiver, the ΤÎx89 bundle comprising a first number of redundancy versions indicative of the block of data as encoded using HARQ; and', 'b) following a determination at the transmitter that transmission of the ΤÎx89 bundle failed to result in successful decoding of the block of data at the receiver, transmitting a second ΤÎx89 bundle from the transmitter to the receiver, the second ΤÎx89 bundle comprising a second number of redundancy versions indicative of the block of data as encoded using HARQ, the second number different from the first number.
2. The method according to claim 1, wherein the second number of redundancy versions is less than the first number of redundancy versions.
3. The method according to claim 1, wherein the second number of redundancy versions is about half of the first number of redundancy versions.
4. The method according to claim 1, wherein the number of redundancy versions in successive ΤÎx89 bundles is adjusted over time in accordance with a bundle size adjustment schedule.
5. The method according to claim 1, wherein the bundle size adjustment schedule causes the TTI bundle size to decrease monotonically over time.
6. The method according to claim 1, wherein the ΤÎx89 bundle corresponds to an initial attempt to transmit the data block or a subsequent attempt to transmit the data block.
7. The method according to claim 1, further comprising following a determination at the transmitter that transmission of the second TTI bundle failed to result in successful decoding of the block of data at the receiver, transmitting a third ΤÎx89 bundle from the transmitter to the receiver, the third TTI bundle comprising a third number of redundancy versions indicative of the block of data as encoded
using HARQ, the third number different from the first number, the second number, or both.', 'The method according to claim 1, wherein an initial bundle size indicative of the block of data is configured based at least in part on channel quality measurements, latency requirements, or both.', 'A communication device in a wireless communication system supporting HARQ and TTI bundling, the communication device configured to transmit a block of data to a receiver, the communication device comprising:', 'a) a transmission module configured to transmit at least a ΤÎx89 bundle and a second TTI bundle from the transmitter to the receiver, the TTI bundle comprising a first number of redundancy versions indicative of the block of data as encoded using HARQ, the second TTI bundle comprising a second number of redundancy versions indicative of the block of data as encoded using HARQ;', 'b) a monitoring module configured to determine whether transmission of the TTI bundle failed to result in successful decoding of the block of data at the receiver, wherein the transmission module is configured to transmit the second TTI bundle in response to a determination that transmission of the TTI bundle has failed to result in successful decoding of the block of data at the receiver; and', 'c) a bundle size adjustment module configured to cause the second number of redundancy versions to be different from the first number of redundancy versions.', 'The communication device according to claim 9, wherein the communication device is a wireless subscriber terminal.', 'The communication device according to claim 9, wherein the communication device is a base station or eNB.', 'A computer program product comprising a computer readable medium storing computer executable statements and instructions thereon that, when executed by a computer, perform operations for transmitting a block of data from a transmitter to
a receiver in a wireless communication system supporting HARQ and TTI bundling, the operations comprising:', 'a) transmitting a TTI bundle from the transmitter to the receiver, the ΤÎx89 bundle comprising a first number of redundancy versions indicative of the block of data as encoded using HARQ; and', 'b) following a determination at the transmitter that transmission of the ΤÎx89 bundle failed to result in successful decoding of the block of data at the receiver, transmitting a second ΤÎx89 bundle from the transmitter to the receiver, the second ΤÎx89 bundle comprising a second number of redundancy versions indicative of the block of data as encoded using HARQ, the second number different from the first number.', 'The computer program product according to claim 12, wherein the second number of redundancy versions is less than the first number of redundancy versions.', 'The computer program product according to claim 12, wherein the second number of redundancy versions is about half of the first number of redundancy versions.', 'The computer program product according to claim 12, wherein the number of redundancy versions in successive TTI bundles is adjusted over time in accordance with a bundle size adjustment schedule.', 'The computer program product according to claim 12, wherein the bundle size adjustment schedule causes the ΤÎx89 bundle size to decrease monotonically over time.', 'The computer program product according to claim 12, wherein the ΤÎx89 bundle corresponds to an initial attempt to transmit the data block or a subsequent attempt to transmit the data block.', 'The computer program product according to claim 12, further comprising following a determination at the transmitter that transmission of the second ΤÎx89 bundle failed to result in successful decoding of the block of data at the receiver, transmitting a third TTI bundle from the transmitter to the receiver, the third ΤÎx89 bundle comprising a third number of redundancy versions indicative of the block
of data as encoded using HARQ, the third number different from the first number, the second number, or both.', 'The computer program product according to claim 12, wherein an initial bundle size indicative of the block of data is configured based at least in part on channel quality measurements, latency requirements, or both.']
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SUMMARY
ClaimChart-WO2015013816A1-STO
Patent number:WO2015013816A1
Claim Chart Type : SEP Claim Chart
Price: 200 €
Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.