Dynamic Transmission Set Indication

• US 20130279344A1
• Filed: 01/10/2011
• Published: 10/24/2013
• Est. Priority Date: 01/10/2011
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Wang, Xiao Yi, Lunttila, Timo Erkki, Skov, Peter
• Granted Patent: US 9,713,126 B2
• Time in Patent Office: Days
• US Class Current: 370/241
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

The present invention proposes methods and apparatuses and computer program products for dynamic transmission set indication in scenarios in which a terminal is enabled for single cell transmission SiC as well as for coordinated multipoint transmission CoMP. To this extent, appropriate information is being fed back from the terminal to the base station via feedback signaling channels. The decision on which transmission mode defined by respective transmission set definitions is used can be taken by the terminal or, in a modified scenario, by the base station, based on the information fed back.

Claims

1. A method, comprising:

performing communication transmission between at least one radio transceiver and a terminal in a cellular network based on one of at least two transmission set definitions for the communication, wherein a respective transmission set definition defines at least the number of cells from which the user equipment receives data transmissions,

measuring, for each of the transmission set definitions, a transmission state (CSI) for the user equipment,

selecting, based on the transmission state, at least one transmission set definition to be used for communication between the at least one radio transceiver (1) and the terminal, and

feeding back the at least one selected transmission set definition to the radio transceiver device for dynamic transmission set assignment.

3. The method according to claim 1, wherein the at least two transmission set definitions define whether the terminal is involved in a single cell transmission or a multi-cell transmission.

4. The method according to claim 3, wherein a transmission set definition identifies a respective individual cell of a transmission set consisting of one or more cells.

5. The method according to claim 1, wherein the at least two transmission set definitions are configured based on long term information exchanged in radio resource control signaling between the terminal and the at least one radio transceiver.

6. The method according to claim 1, wherein the feeding back and/or receiving is performed periodically.

7. The method according to claim 1, wherein the feeding back and/or receiving is performed aperiodically.

8. The method according to claim 1, wherein the information fed back and/or received comprises at least one of:

a transmission set indicator, TSI, a rank indicator, RI, and a channel quality indicator, CQI, and a precoding matrix indicator, PMI, associated to the TSI/RI values.

9. The method according to claim 6, wherein the feeding back and/or receiving uses a physical uplink control channel, PUCCH, from the user equipment to the radio transceiver device.

10. The method according to claim 7, wherein the feeding back and/or receiving uses a physical uplink signaling channel, PUCCH, from the user equipment to the radio transceiver device.

21. A computer program product comprising computer-executable components which perform, when the program is run on a computer, the method according to claim 1.

23. The computer program product according to claim 21, embodied as a computer-readable storage medium.

2. A method, comprising:

performing communication transmission between at least one radio transceiver and a terminal in a cellular network based on one of at least two transmission set definitions for the communication, wherein a respective transmission set definition defines at least the number of cells from which the user equipment receives data transmissions,

receiving, from the terminal, at least one transmission set definition at the radio transceiver device, and

assigning the received transmission set definition for further communication.

22. A computer program product comprising computer-executable components which perform, when the program is run on a computer, the method according to claim 2.

11. An apparatus, comprising:

transceiver means configured to perform communication transmission between at least one radio transceiver and a terminal in a cellular network based on one of at least two transmission set definitions for the communication, wherein a respective transmission set definition defines at least the number of cells from which the user equipment receives data transmissions,

measurement means configured to measure, for each of the transmission set definitions, a transmission state (CSI) for the user equipment,

control means configured to select, based on the transmission state, at least one transmission set definition to be used for communication between the at least one radio transceiver and the terminal, and

wherein the transceiver means is configured to feed back the at least one selected transmission set definition to the radio transceiver device for dynamic transmission set assignment.

13. The apparatus according to claim 11, wherein the at least two transmission set definitions define whether the terminal is involved in a single cell transmission or a multi-cell transmission.

14. The apparatus according to claim 13, wherein a transmission set definition identifies a respective individual cell of a transmission set consisting of one or more cells.

15. The apparatus according to claim 11, wherein the at least two transmission set definitions are configured based on long term information exchanged in radio resource control signaling between the terminal and the at least one radio transceiver.

16. The apparatus according to claim 11, wherein the transceiver means is configured to feed back and/or to receive periodically.

17. The apparatus according to claim 11, wherein the transceiver means is configured to feed back and/or to receive aperiodically.

18. The apparatus according to claim 11, wherein the information fed back and/or received comprises at least one of:

a transmission set indicator, TSI, a rank indicator, RI, and a channel quality indicator, CQI, and a precoding matrix indicator, PMI, associated to the TSI/RI values.

19. The apparatus according to claim 16, wherein transceiver means is configured to use, for feedback and/or reception, a physical uplink control channel, PUCCH, from the user equipment to the radio transceiver device.

20. The apparatus according to claim 17, wherein the transceiver means is configured to use, for feedback and/or reception, a physical uplink signaling channel, PUSCH, from the user equipment to the radio transceiver device.

12. An apparatus, comprising:

transceiver means configured to perform communication transmission between at least one radio transceiver and a terminal in a cellular network based on one of at least two transmission set definitions for the communication, wherein a respective transmission set definition defines at least the number of cells from which the user equipment receives data transmissions,

wherein the transceiver means is configured to receive, from the terminal, at least one transmission set definition at the radio transceiver device, and

control means configured to assign the received transmission set definition for further communication.