Abstract
A method and apparatus for allocating and signaling ACK/NACK resources in a wireless communication system are provided in which a Node B determines to use ACK/NACK resources within a predetermined fixed-size first resource group for ACK/NACK transmission for non-persistently scheduled data channels the ACK/NACK resources being implicitly mapped to SCCHs carrying scheduling information about the non-persistently scheduled data channels and allocates ACK/NACK resources within a predetermined flexible-size second resource group for ACK/NACK transmission for persistently scheduled data channels and transmits resource indication information explicitly indicating the allocated ACK/NACK resources to at least one UE.
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Specification Information
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Technologies
Resource configuration Feedback
Product
Base Station (eNB/gNB)User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
UCI transmission
Claim
1. A method for allocating (ACK/NACK) resources in a wireless communication system, comprising:
determining whether a scheduling type of a data channel is persistent or non-persistent;
selecting between a first ACK/NACK resource allocation scheme and a second ACK/NACK resource allocation scheme based on the determined scheduling type of the data channel, wherein the first ACK/NACK resource allocation scheme is different than the second ACK/NACK resource allocation scheme; and
allocating resources for transmission of an ACK/NACK based on the selected one of the first ACK/NACK resource allocation scheme and the second ACK/NACK resource allocation scheme.', 'determining whether a scheduling type of a data channel is persistent or non-persistent;', 'selecting between a first ACK/NACK resource allocation scheme and a second ACK/NACK resource allocation scheme based on the determined scheduling type of the data channel, wherein the first ACK/NACK resource allocation scheme is different than the second ACK/NACK resource allocation scheme; and', 'allocating resources for transmission of an ACK/NACK based on the selected one of the first ACK/NACK resource allocation scheme and the second ACK/NACK resource allocation scheme.
2. The method of claim 1, wherein:
when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on a Control Channel Element (CCE) index; and
when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on information configured by higher layers.', 'when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on a Control Channel Element (CCE) index; and', 'when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on information configured by higher layers.
3. The method of claim 1, wherein:
when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on a Scheduling Control CHannel (SCCH) index, wherein an SCCH includes one or more Control Channel Elements (CCEs); and
when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on information configured by higher layers.', 'when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on a Scheduling Control CHannel (SCCH) index, wherein an SCCH includes one or more Control Channel Elements (CCEs); and', 'when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on information configured by higher layers.
4. The method of claim 1, wherein:
when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated within a first resource group of a fixed size; and
when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated within a second resource group of a flexible size.', 'when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated within a first resource group of a fixed size; and', 'when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated within a second resource group of a flexible size.
5. The method of claim 1, further comprising:
when initial data is transmitted via the data channel, allocating resources for transmitting the ACK/NACK based on information configured by higher layers; and
when the data is retransmitted via the data channel, allocating resources for transmitting the ACK/NACK based on an SCCH index or a CCE index.', 'when initial data is transmitted via the data channel, allocating resources for transmitting the ACK/NACK based on information configured by higher layers; and', 'when the data is retransmitted via the data channel, allocating resources for transmitting the ACK/NACK based on an SCCH index or a CCE index.
6. The method of claim 1, further comprising:
when initial data is transmitted via the data channel, allocating resources for transmitting the ACK/NACK based on an SCCH index or a CCE index; and
when the data is retransmitted via the data channel, allocating resources for transmitting the ACK/NACK based on information configured by higher layers.', 'when initial data is transmitted via the data channel, allocating resources for transmitting the ACK/NACK based on an SCCH index or a CCE index; and', 'when the data is retransmitted via the data channel, allocating resources for transmitting the ACK/NACK based on information configured by higher layers.
7. The method of claim 1, wherein the allocating step comprises:
allocating resources for transmitting the ACK/NACK and Channel Quality Information (CQI) within a predetermined shared resource based on the selected ACK/NACK resource allocation scheme, the shared resource having a shiftable resource boundary.', 'allocating resources for transmitting the ACK/NACK and Channel Quality Information (CQI) within a predetermined shared resource based on the selected ACK/NACK resource allocation scheme, the shared resource having a shiftable resource boundary.
8. The method of claim 1, further comprising:
when a Multi-CodeWord Multiple Input Multiple Output (MCW-MIMO) data channel is scheduled non-persistently, allocating resources for transmitting the ACK/NACK, for one or more codewords on the MCW-MIMO data channel, based on an SCCH index or a CCE index; and
allocating resources for transmitting the ACK/NACK, for other codewords, based on information configured by higher layers.', 'when a Multi-CodeWord Multiple Input Multiple Output (MCW-MIMO) data channel is scheduled non-persistently, allocating resources for transmitting the ACK/NACK, for one or more codewords on the MCW-MIMO data channel, based on an SCCH index or a CCE index; and', 'allocating resources for transmitting the ACK/NACK, for other codewords, based on information configured by higher layers.
9. The method of claim 4,
wherein the second resource group is divided into a third resource group having a transmission duration of 0.5 ms and a fourth resource group having a transmission duration of 1 ms.', 'wherein the second resource group is divided into a third resource group having a transmission duration of 0.5 ms and a fourth resource group having a transmission duration of 1 ms
10. The method of claim 4, wherein, when the data channel is scheduled persistently, remaining resources are allocated within the first resource group for transmitting the ACK/NACK
11. A method for allocating ACKnowledgment/Negative ACKnowledgment (ACK/NACK) resources in a wireless communication system, comprising:
determining whether a data channel is scheduled persistently or non-persistently;
transmitting the ACK/NACK resource allocation information using L1/L2 signaling or high layer signaling, when the data channel is scheduled persistently; and
transmitting data channel scheduling information having ACK/NACK resource allocation information, when the data channel is scheduled non-persistently.', 'determining whether a data channel is scheduled persistently or non-persistently;', 'transmitting the ACK/NACK resource allocation information using L1/L2 signaling or high layer signaling, when the data channel is scheduled persistently; and', 'transmitting data channel scheduling information having ACK/NACK resource allocation information, when the data channel is scheduled non-persistently.12. The method of claim 11, wherein the
ACK/NACK resource allocation information is transmitted with data channel scheduling information, when the data channel is scheduled persistently.', 'ACK/NACK resource allocation information is transmitted with data channel scheduling information, when the data channel is scheduled persistently.13. An apparatus for allocating ACKnowledgment/Negative ACKnowledgment (ACK/NACK) resources in a wireless communication system, comprising:
a decoder for decoding scheduling information;
a controller for determining whether a scheduling type of a data channel is persistent or non-persistent, and selecting between a first ACK/NACK resource allocation scheme and a second ACK/NACK resource allocation scheme based on the determined scheduling type of the data channel, wherein the first ACK/NACK resource allocation scheme is different than the second ACK/NACK resource allocation scheme; and
an ACK/NACK mapper for allocating resources for transmission of an ACK/NACK based on the selected one of the first ACK/NACK resource allocation scheme and the second ACK/NACK resource allocation scheme.', 'a decoder for decoding scheduling information;', 'a controller for determining whether a scheduling type of a data channel is persistent or non-persistent, and selecting between a first ACK/NACK resource allocation scheme and a second ACK/NACK resource allocation scheme based on the determined scheduling type of the data channel, wherein the first ACK/NACK resource allocation scheme is different than the second ACK/NACK resource allocation scheme; and', 'an ACK/NACK mapper for allocating resources for transmission of an ACK/NACK based on the selected one of the first ACK/NACK resource allocation scheme and the second ACK/NACK resource allocation scheme.14. The apparatus of claim 13, wherein
when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on a Control Channel Element (CCE) index; and
when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on information configured by higher layers.', 'when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on a Control Channel Element (CCE) index; and', 'when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on information configured by higher layers.15. The apparatus of claim 13, wherein
when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on a Scheduling Control CHannel (SCCH) index, wherein an SCCH includes one or more Control Channel Elements (CCEs); and
when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on information configured by higher layers.', 'when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on a Scheduling Control CHannel (SCCH) index, wherein an SCCH includes one or more Control Channel Elements (CCEs); and', 'when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated based on information configured by higher layers.16. The apparatus of claim 13, wherein
when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated within a first resource group of a fixed size; and
when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated within a second resource group of a flexible size.', 'when the data channel is scheduled non-persistently, the first ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated within a first resource group of a fixed size; and', 'when the data channel is scheduled persistently, the second ACK/NACK resource allocation scheme is selected and resources for transmitting the ACK/NACK are allocated within a second resource group of a flexible size.17. The apparatus of claim 13, wherein
when initial data is transmitted via the data channel, resources are allocated for transmitting the ACK/NACK based on information configured by higher layers; and
when the data is retransmitted via the data channel, resources are allocated for transmitting the ACK/NACK based on an SCCH index or a CCE index.', 'when initial data is transmitted via the data channel, resources are allocated for transmitting the ACK/NACK based on information configured by higher layers; and', 'when the data is retransmitted via the data channel, resources are allocated for transmitting the ACK/NACK based on an SCCH index or a CCE index.18. The apparatus of claim 13, wherein
when initial data is transmitted via the data channel, resources are allocated for transmitting the ACK/NACK based on an SCCH index or a CCE index; and
when the data is retransmitted via the data channel, resources are allocated for transmitting the ACK/NACK based on information configured by higher layers.', 'when initial data is transmitted via the data channel, resources are allocated for transmitting the ACK/NACK based on an SCCH index or a CCE index; and', 'when the data is retransmitted via the data channel, resources are allocated for transmitting the ACK/NACK based on information configured by higher layers.19. The apparatus of claim 13, wherein resources for transmitting the ACK/NACK and Channel Quality Information (CQI) are allocated within a predetermined shared resource based on the determined scheduling type, and wherein the shared resource has a shiftable resource boundary.
20. The apparatus of claim 13, wherein
when a Multi-CodeWord Multiple Input Multiple Output (MCW-MIMO) data channel is scheduled non-persistently, resources are allocated for transmitting the ACK/NACK, for one of more codewords on the MCW-MIMO data channel, based on an SCCH index or a CCE index; and
resources are allocated for transmitting the ACK/NACK, for other codewords, based on information configured by higher layers.', 'when a Multi-CodeWord Multiple Input Multiple Output (MCW-MIMO) data channel is scheduled non-persistently, resources are allocated for transmitting the ACK/NACK, for one of more codewords on the MCW-MIMO data channel, based on an SCCH index or a CCE index; and', 'resources are allocated for transmitting the ACK/NACK, for other codewords, based on information configured by higher layers.
21. The apparatus of claim 16,
wherein the second resource group is divided into a third resource group having a transmission duration of 0.5 ms and a fourth resource group having a transmission duration of 1 ms.', 'wherein the second resource group is divided into a third resource group having a transmission duration of 0.5 ms and a fourth resource group having a transmission duration of 1 ms.
22. The apparatus of claim 16, wherein, when the data channel is scheduled persistently, remaining resources for transmitting the ACK/NACK are allocated within the first resource group.
23. An apparatus for allocating ACKnowledgment/Negative ACKnowledgment (ACK/NACK) resources in a wireless communication system, comprising:
a controller for determining whether a data channel is scheduled persistently or non-persistently;
a scheduler for scheduling an ACK/NACK channel, when the data channel is scheduled persistently;
an ACK/NACK resource allocation information generator for generating ACK/NACK resource allocation information.
a data scheduler for scheduling the data channel;
a data scheduling information generator for generating scheduling information; and
a control channel generator for transmitting the ACK/NACK resource allocation information using L1/L2 signaling or high-layer signaling when the data channel is scheduled persistently, and transmitting the scheduling information having the ACK/NACK resource allocation information when the data channel is scheduled non-persistently.', 'a controller for determining whether a data channel is scheduled persistently or non-persistently;', 'a scheduler for scheduling an ACK/NACK channel, when the data channel is scheduled persistently;', 'an ACK/NACK resource allocation information generator for generating ACK/NACK resource allocation information.', 'a data scheduler for scheduling the data channel;', 'a data scheduling information generator for generating scheduling information; and', 'a control channel generator for transmitting the ACK/NACK resource allocation information using L1/L2 signaling or high-layer signaling when the data channel is scheduled persistently, and transmitting the scheduling information having the ACK/NACK resource allocation information when the data channel is scheduled non-persistently.
24. A method for allocating ACKnowledgment/Negative ACKnowledgment (ACK/NACK) resources at a User Equipment (UE) in a wireless communication system, the method comprising the steps of:
determining whether a control channel is detected that indicates a transmission on a corresponding data channel for a corresponding time interval;
selecting between a first ACK/NACK resource allocation scheme and a second ACK/NACK resource allocation scheme based on whether the control channel is received, wherein the first ACK/NACK resource allocation scheme is different than the second ACK/NACK resource allocation scheme; and
determining a resource for transmission of an ACK/NACK according to the selected one of the first ACK/NACK resource allocation scheme and the second ACK/NACK resource allocation scheme.', 'determining whether a control channel is detected that indicates a transmission on a corresponding data channel for a corresponding time interval;', 'selecting between a first ACK/NACK resource allocation scheme and a second ACK/NACK resource allocation scheme based on whether the control channel is received, wherein the first ACK/NACK resource allocation scheme is different than the second ACK/NACK resource allocation scheme; and', 'determining a resource for transmission of an ACK/NACK according to the selected one of the first ACK/NACK resource allocation scheme and the second ACK/NACK resource allocation scheme.
25. The method of claim 24, wherein:
the resource for transmission of the ACK/NACK is determined based on an index of a Control Channel Element (CCE) used for transmission of allocation information for the data channel, when the control channel is detected and the first ACK/NACK resource allocation scheme is selected; and
the resource for transmission of the ACK/NACK is determined based on information configured by higher layers, when the control channel is not detected and the second ACK/NACK resource allocation scheme is selected.', 'the resource for transmission of the ACK/NACK is determined based on an index of a Control Channel Element (CCE) used for transmission of allocation information for the data channel, when the control channel is detected and the first ACK/NACK resource allocation scheme is selected; and', 'the resource for transmission of the ACK/NACK is determined based on information configured by higher layers, when the control channel is not detected and the second ACK/NACK resource allocation scheme is selected.
26. An apparatus for allocating ACKnowledgment/Negative ACKnowledgment (ACK/NACK) resources in a wireless communication system, the apparatus comprising:
a controller for determining whether a control channel is received that indicates a transmission on a corresponding data channel for a corresponding time interval, selecting between a first ACK/NACK resource allocation scheme and a second ACK/NACK resource allocation scheme based on whether the control channel is received, and determining a resource for transmission of an ACK/NACK according to the selected one of the first ACK/NACK resource allocation scheme and the second ACK/NACK resource allocation scheme, wherein the first ACK/NACK resource allocation scheme is different than the second ACK/NACK resource allocation scheme; and
an ACK/NACK mapper for allocating the determined resource to transmit the ACK/NACK.', 'a controller for determining whether a control channel is received that indicates a transmission on a corresponding data channel for a corresponding time interval, selecting between a first ACK/NACK resource allocation scheme and a second ACK/NACK resource allocation scheme based on whether the control channel is received, and determining a resource for transmission of an ACK/NACK according to the selected one of the first ACK/NACK resource allocation scheme and the second ACK/NACK resource allocation scheme, wherein the first ACK/NACK resource allocation scheme is different than the second ACK/NACK resource allocation scheme; and', 'an ACK/NACK mapper for allocating the determined resource to transmit the ACK/NACK.
27. The apparatus of claim 26, wherein:
the controller determines the resource for transmission of the ACK/NACK based on an index of a Control Channel Element (CCE) used for transmission of allocation information for the data channel, when the control channel is detected and the first ACK/NACK resource allocation scheme is selected; and
the controller determines the resource for transmission of the ACK/NACK based on information configured by higher layers, when the control channel is not detected and the second ACK/NACK resource allocation scheme is selected.', 'the controller determines the resource for transmission of the ACK/NACK based on an index of a Control Channel Element (CCE) used for transmission of allocation information for the data channel, when the control channel is detected and the first ACK/NACK resource allocation scheme is selected; and', 'the controller determines the resource for transmission of the ACK/NACK based on information configured by higher layers, when the control channel is not detected and the second ACK/NACK resource allocation scheme is selected.']
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