Abstract
A method and a wireless communication system for providing downlink (DL) control signalling for a communication apparatus are provided. In the method at least two scheduling cells are configured for providing DL control signalling and the DL control signalling is provided on one or more of the at least two scheduling cells for a scheduled cell.
Technologies
Scheduling
Product
Use Cases
Wireless communication
Services
Claim
1. A method for providing downlink (DL) control signalling for a communication apparatus, adapted to a base station, comprising:
configuring at least two scheduling cells for providing DL control signalling; and
providing the DL control signalling on one or more of the at least two scheduling cells for a scheduled cell, switching to provide DL control signaling on an another scheduling cell of the at least two scheduling cells for the scheduled cell at another subframe,
wherein the step of providing the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell comprises:
providing the DL control signalling on the scheduling cell with a highest priority for the scheduled cell, wherein the priority of the at least two scheduling cells is determined according to a configured priority, an index value of the scheduling cell, a number of DL subframes configured to the scheduling cell, an order of the scheduling cell in an UL-DL configuration index or channel quality of the scheduling cell.
2. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein the step of configuring the at least two scheduling cells for providing DL control signalling comprises:
configuring a scheduling pattern for the at least two scheduling cells, wherein the scheduling pattern indicates the scheduling cell configured for providing DL control signalling of each subframe of the scheduled cell.
3. The method for providing DL control signalling for a communication apparatus according to claim 2, wherein the scheduling pattern is configured as a bitmap.
4. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein in the step of providing the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell, the at least two scheduling cells provide the DL control signalling for allocating a same portion or different portions of radio resources of a same subframe of the scheduled cell.
5. The method for providing DL control signalling according to claim 1, wherein in the step of providing the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell, the at least two scheduling cells provide the DL control signalling for different subframes of the scheduled cell.
6. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein in the step of providing the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell, one of the at least two scheduling cells provide resource allocation information while another one of the at least two scheduling cells provide an ACK/NACK feedback.
7. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein before the step of providing the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell, the method further comprises:
sending a message to the communication apparatus to activate the scheduled cell; and
sending the message to activate the one or more of the at least two scheduling cells.
8. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein after the step of providing the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell, the method further comprises:
switching to transmit an ACK/NACK feedback on another scheduling cell based on whether the scheduling cell is at an UL subframe, deactivated or de-configured.
9. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein the at least two scheduling cells are configured with different TDD UL-DL configuration.
10. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein frame boundaries of the at least two scheduling cells and the scheduled cell are not aligned while subframe boundaries of the at least two scheduling cells and the scheduled cell are aligned.
11. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein the at least two scheduling cells adopt time division duplex (TDD) systems and the scheduled cell adopts frequency division duplex (FDD) system.
12. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein the at least two scheduling cell comprises the scheduled cell itself.
13. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein the DL control signalling comprises DL and/or UL grant resource assignment information, HARQ ACK/NACK feedbacks, a synchronization channel for DL timing synchronization, system information, a reference signalling, or a combination thereof.
14. The method for providing DL control signalling for a communication apparatus according to claim 1, wherein the step of providing the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell comprises:
providing DL control signalling on one of the at least two scheduling cells for the scheduled cell at a subframe; and
switching to provide DL control signalling on an another scheduling cell of the at least two scheduling cells for the scheduled cell at another subframe.
15. The method for providing DL control signalling for a communication apparatus according to claim 14, wherein the step of providing the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell comprises:
providing the DL control signalling for the scheduled cell only when the scheduled cell is at a DL subframe based on a UL-DL configuration configured to the scheduled cell.
16. The method for providing DL control signalling for a communication apparatus according to claim 14, wherein the step of switching to provide the DL control signalling on the another scheduling cell of the at least two scheduling cells for the scheduled cell comprises:
switching the scheduling cell providing the DL control signalling among the at least two scheduling cells based on whether the scheduling cell is at an uplink (UL) subframe, deactivated or de-configured.
17. A method for receiving downlink (DL) control signalling from a base station, adapted to a communication apparatus, comprising:
being configured at least two scheduling cells for receiving DL control signalling from the base station; and receiving the DL control signalling on one or more of the at least two scheduling cells for a scheduled cell, switching to provide DL control signaling on an another scheduling cell of the at least two scheduling cells for the scheduled cell at another subframe, wherein the step of receiving the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell comprises:
monitoring the DL control signalling on the scheduling cell with a highest priority for the scheduled cell, wherein the priority of the at least two scheduling cells is determined according to a configured priority, an index value of the scheduling cell, a number of DL subframes configured to the scheduling cell, an order of the scheduling cell in an UL-DL configuration index or channel quality of the scheduling cell.
18. The method for receiving DL control signalling from a base station according to claim 17, wherein the step of receiving the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell comprises:
receiving a control signalling on the scheduling cell; and
restarting an activation/deactivation timer associated with the scheduled cell, associated with the scheduling cell from which the control signalling is received, or associated with all activated scheduling cells of the scheduled cell if the control signalling indicates an UL grant or DL assignment for the scheduled cell.
19. The method for receiving DL control signalling from a base station according to claim 17, wherein after the step of receiving the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell, the method further comprises:
switching to receive an ACK/NACK feedback from another scheduling cell based on whether the scheduling cell is at an UL subframe, deactivated or de-configured.
20. The method for receiving DL control signalling from a base station according to claim 17, wherein in the step of receiving the DL control signalling on the one or more of the at least two scheduling cells for the scheduled cell, the method further comprises:
monitoring the DL control signalling from one of the at least two scheduling cells for the scheduled cell at a subframe; and
switching to monitor the DL control signalling from another one of the at least two scheduling cells for the scheduled cell at another subframe.
21. The method for receiving DL control signalling from a base station according to claim 20, wherein the step of monitoring the scheduling cell providing the DL control signalling comprises:
monitoring the DL control signalling for the scheduled cell only when the scheduled cell is at a DL subframe based on a UL-DL configuration configured to the scheduled cell.
22. The method for receiving DL control signalling from a base station according to claim 20, wherein the step of switching to monitor another scheduling cell providing the DL control signalling comprises:
switching to monitor the DL control signalling among the at least two scheduling cells based on whether the scheduling cell is at an UL subframe, deactivated or de-configured.
23. A wireless communication system for providing DL control signalling, comprising:
a communication apparatus; and a base station, configured to configure at least two scheduling cells for providing DL control signalling to the communication apparatus, and provide the DL control signalling on one or more of the at least two scheduling cells for a scheduled cell, switching to provide DL control signaling on an another scheduling cell of the at least two scheduling cells for the scheduled cell at another subframe,
wherein the scheduling cell having a highest priority provides the DL control signalling for the scheduled cell, wherein the priority of the at least two scheduling cells is determined according to a configured priority, an index value of the scheduling cell, a number of DL subframes configured to the scheduling cell, an order of the scheduling cell in an UL-DL configuration index or channel quality of the scheduling cell.
24. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the base station configures a scheduling pattern for the at least two scheduling cells, wherein the scheduling pattern indicates the scheduling cell configured for providing DL control signalling of each subframe of the scheduled cell.
25. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 24, wherein the scheduling pattern is configured as a bitmap.
26. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the at least two scheduling cells provide the DL control signalling for allocating a same portion or different portions of radio resources of a same subframe of the scheduled cell.
27. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the at least two scheduling cells provide the DL control signalling for different subframes of the scheduled cell.
28. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein one of the at least two scheduling cells provide resource allocation information for a subframe of the scheduled cell while another one of the at least two scheduling cells provide an ACK/NACK feedback.
29. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the base station sends a message to the communication apparatus to activate the scheduled cell and the one or more of the at least two scheduling cells.
30. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the communication apparatus receiving a control signalling on the scheduling cell, and restarts an activation/deactivation timer associated with the scheduled cell, associated with the scheduling cell from which the control signalling is received, or associated with all activated scheduling cells of the scheduled cell if the control signalling indicates an UL grant or DL assignment for the scheduled cell.
31. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the communication apparatus switches to receive an ACK/NACK feedback from another scheduling cell based on whether the scheduling cell is at an UL subframe, deactivated or de-configured.
32. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the at least two scheduling cells are configured with different TDD UL-DL configuration.
33. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein frame boundaries of the at least two scheduling cells and the scheduled cell are not aligned while subframe boundaries of the at least two scheduling cells and the scheduled cell are aligned.
34. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the at least two scheduling cells adopt TDD systems and the scheduled cell adopts FDD system.
35. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the at least two scheduling cell comprises the scheduled cell itself.
36. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the DL control signalling comprises DL and/or UL grant resource assignment information, HARQ ACK/NACK feedbacks, a synchronization channel for DL timing synchronization, system information, a reference signalling, or a combination thereof.
37. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 23, wherein the communication apparatus monitors the DL control signalling from one of the at least two scheduling cells for the scheduled cell at a subframe, and switches to monitor the DL control signalling from another one of the at least two scheduling cells for the scheduled cell at another subframe.
38. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 37, wherein the communication apparatus monitors the DL control signalling for the scheduled cell only when the scheduled cell is at a DL subframe based on a UL-DL configuration configured to the scheduled cell.
39. The wireless communication system for providing DL control signalling for a communication apparatus according to claim 37, wherein the communication apparatus switches to monitor the DL control signalling among the at least two scheduling cells based on whether the scheduling cell is at an UL subframe, deactivated or de-configured.
Associated Portfolios
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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.