TTI bundling

Patent metadata

Field	Value
Publication number	US-9282567-B2
Application number	US-201314373012-A
Country	US
Kind code	B2
Filing date	Feb 14, 2013
Priority date	Feb 29, 2012
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

The present invention relates to transmitting and receiving data in a multicarrier communication system in which the transmission and reception is performed on a transmission time interval basis. In particular, dynamic bundling of transmission time intervals is dynamically configurable for each scheduling assignment. The dynamic bundling may be applied in uplink and/or in downlink transmission between a terminal and a network node.

First claim

The invention claimed is:

1. An apparatus for transmitting data in a multicarrier communications system, transmission of data being performed in transmission time intervals, the apparatus comprising:
a control information receiver which, in operation, receives scheduling information indicating resources on which the apparatus is scheduled to transmit data and including a bundling indication for indicating whether the scheduled transmission is to be performed in one or more transmission time intervals and an inter transmission time interval indicating a delay between transmission time intervals belonging to a same TTI bundle; and
a transmitter which, in operation, transmits the data in the scheduled resources in accordance with the received bundling indication.

2. An apparatus for receiving data in a multicarrier communications system, reception of data being performed in transmission time intervals, the apparatus comprising:
a control information receiver which, in operation, receives scheduling information indicating resources on which the apparatus is scheduled to receive of data and including a bundling indication for indicating whether the scheduled reception is to be performed in one or more transmission time intervals and a modulation indicator consisting of a plurality of bits; and
a data receiver which, in operation, receives the data in the scheduled resources in accordance with the received bundling indication; and
wherein the modulation indicator takes a plurality of values, each indicating a modulation scheme and/or size of coded data to be employed for the scheduled transmission or reception in a single transmission time interval, and at least one value indicates that the scheduled transmission or reception is to be performed in a plurality of transmission time intervals.

3. The apparatus according to claim 1 , wherein a delay between the one or more bundled transmission time intervals corresponds in its length to a time interval between two transmissions or receptions of data of a same ARQ process.

4. The apparatus according to claim 1 , wherein the scheduling information includes a modulation indicator consisting of a plurality of bits and is defined to be capable of taking:
a plurality of values, each indicating a modulation scheme and/or size of coded data to be employed for the scheduled transmission or reception in a single transmission time interval; and
at least one value indicating that the scheduled transmission or reception is to be performed in a plurality of transmission time intervals.

5. The apparatus according to claim 1 , wherein the bundling indication includes a number of transmission time intervals in which the scheduled transmission or reception is to be performed.

6. The apparatus according to claim 1 , wherein the apparatus determines the size of the data for the scheduled transmission or reception based on a number of transmission time intervals in which the data is to be transmitted or received and based on a number of frequency resources effectively used for the scheduled transmission or reception.

7. The apparatus according to claim 1 , wherein the scheduling information further includes
a redundancy version indicator for indicating a value that is used for rate matching an output of a forward error correction encoder such as a turbo or convolutional encoder, or
a process number indication which indicates a number of an addressed ARQ process and at a same time the bundling indication.

8. A method for transmitting data in a multicarrier communications system, transmission of data being performed in transmission time intervals, the method comprising:
receiving scheduling information indicating resources on which a terminal is scheduled to transmit data and including a bundling indication for indicating whether the scheduled transmission is to be performed in one or more transmission time intervals and a modulation indicator consisting of a plurality of bits, wherein the modulation indicator takes a plurality of values, each indicating a modulation scheme and/or size of coded data to be employed for the scheduled transmission or reception in a single transmission time interval, and at least one value indicates that the scheduled transmission or reception is to be performed in a plurality of transmission time intervals; and
transmitting the data in the scheduled resources in accordance with the received bundling indication.

9. A method for receiving data in a multicarrier communications system, reception of data being performed in transmission time intervals, the method comprising:
receiving scheduling information indicating resources on which a terminal is scheduled to receive of data and including a bundling indication for indicating whether the scheduled reception is to be performed in one or more transmission time intervals and an inter transmission time interval indicating a delay between transmission time intervals belonging to a same TTI bundle; and
receiving the data in the scheduled resources in accordance with the received bundling indication.

10. The method according to claim 8 , wherein the scheduling information further includes an inter transmission time interval indicating a delay between transmission time intervals belonging to a same TTI bundle.

11. The method according to claim 8 , wherein a delay between the one or more bundled transmission time intervals corresponds in its length to a time interval between two transmissions or receptions of data of a same ARQ process.

12. The method according to claim 8 , wherein the bundling indication includes a number of transmission time intervals in which the scheduled transmission or reception is to be performed.

13. The method according to claim 8 , further comprising a step of determining the size of the data for the scheduled transmission or reception based on a number of transmission time intervals in which the data is to be transmitted or received and based on a number of frequency resources effectively used for the scheduled transmission or reception.

14. The apparatus according to claim 2 , wherein the scheduling information further includes an inter transmission time interval indicating a delay between transmission time intervals belonging to a same TTI bundle.

15. The apparatus according to claim 2 , wherein a delay between the one or more bundled transmission time intervals corresponds in its length to a time interval between two transmissions or receptions of data of a same ARQ process.

16. The apparatus according to claim 2 , wherein the scheduling information further includes
a redundancy version indicator for indicating a value that is used for rate matching an output of a forward error correction encoder such as a turbo or convolutional encoder, or
a process number indication which indicates a number of an addressed ARQ process and at a same time the bundling indication.

17. The method according to claim 9 , wherein the scheduling information further includes an inter transmission time interval indicating a delay between transmission time intervals belonging to a same TTI bundle.

18. The method according to claim 9 , wherein a delay between the one or more bundled transmission time intervals corresponds in its length to a time interval between two transmissions or receptions of data of a same ARQ process.

19. The method according to claim 9 , wherein the scheduling information includes a modulation indicator consisting of a plurality of bits and is defined to be capable of taking:
a plurality of values, each indicating

Assignees

• Panasonic Ip Corp America

Inventors

• Golitschek Edler Von Elbwart Alexander
• Wengerter Christian
• Suzuki Hidetoshi

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L1/1812

  Hybrid protocols; Hybrid automatic repeat request [HARQ] · CPC title

• H04W72/12 Primary

  Wireless traffic scheduling · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title