Abstract
A method and apparatus are described for a User Equipment (UE) to transmit in a control channel ACKnowledgement signals associated with a Hybrid Automatic Repeat reQuest process (HARQ-ACK signals) in response to receiving Transport Blocks (TBs) transmitted from a base station. The UE conveys the HARQ-ACK information by selecting one resource from multiple resources in the control channel and by selecting a constellation point of the modulation scheme for the HARQ-ACK signal. Transmission diversity is supported using different control channel resources that are already available to the UE without configuring additional resources. Design principles are described to optimally map the HARQ-ACK information to control channel resources and modulation constellation points for a Time Division Duplex (TDD) system and for a Frequency Division Duplex (FDD) system.
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4G | 24/10/2011 | ISLD-201110-007 | SAMSUNG | No | Family Member | ||||
4G | 20/01/2015 | ISLD-201501-011 | SAMSUNG | No | Family Member | ||||
5G | 25/04/2018 | ISLD-201804-027 | SAMSUNG | Yes | Basis Patent |
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Technologies
Product
User Equipment (UE/Terminal)
Use Cases
Services
Claim
1. A method for a user equipment (UE) to transmit to a base station acknowledgement information for a physical downlink shared channel (PDSCH), the method comprising:
identifying a first uplink control channel resource based on a first control channel element (CCE) used to transmit a physical downlink control channel (PDCCH) corresponding to the PDSCH;
identifying a second uplink control channel resource based on the first CCE+1, for a transmission mode that supports up to two transport blocks (TBs); and
transmitting the acknowledgement information on one of the first uplink control channel resource and the second uplink control channel resource,
wherein the first uplink control channel resource and the second uplink control channel resource are associated with a first cell.
2. The method of claim 1, wherein the one of the first uplink control channel resource and the second uplink control channel resource is selected based on the acknowledgement information.
3. The method of claim 1, wherein if the UE is configured with multiple cells, a third uplink control channel resource and a fourth uplink control channel resource are determined for a second cell having a transmission mode that supports up to two TBs.
4. A user equipment (UE) for transmitting acknowledgement information for a physical downlink shared channel (PDSCH) to a base station, the UE comprising:
a selector for identifying, a first uplink control channel resource based on a first control channel element (CCE) used to transmit a physical downlink control channel (PDCCH) corresponding to the PDSCH, and for identifying a second uplink control channel resource based on the first CCE+1, for a transmission mode that supports up to two transport blocks (TBs); and
a transmitter for transmitting the acknowledgement information on one of the first uplink control channel resource and the second uplink control channel resource,
wherein the first uplink control channel resource and the second uplink control channel resource are associated with a first cell.
5. The UE of claim 4, wherein the one of the first uplink control channel resource and the second uplink control channel resource is selected based on the acknowledgement information.
6. The UE of claim 4, wherein if the UE is configured with multiple cells, a third uplink control channel resource and a fourth uplink control channel resource are determined for a second cell having a transmission mode that supports up to two TBs.
7. A method for a base station to receive acknowledgement information, the method comprising:
determining a first uplink control channel resource based on a first control channel element (CCE) used to transmit a physical downlink control channel (PDCCH) corresponding to a physical downlink shared channel (PDSCH);
determining a second uplink control channel resource based on the first CCE+1, for a transmission mode that supports up to two transport blocks (TBs); and
receiving the acknowledgement information on one of the first uplink control channel resource and the second uplink control channel resource,
wherein the first uplink control channel resource and the second uplink control channel resource are associated with a first cell.
8. The method of claim 7, wherein the one of the first uplink control channel resource and the second uplink control channel resource is selected based on the acknowledgement information.
9. The method of claim 7, wherein if the UE is configured with multiple cells, a third uplink control channel resource and a fourth uplink control channel resource are determined for a second cell having a transmission mode that supports up to two TBs.
10. An apparatus for receiving acknowledgement information in a communication system, the apparatus comprising:
a transmitter configured to transmit a physical downlink control channel (PDCCH) corresponding to a physical downlink shared channel (PDSCH); and
a receiver configured to receive acknowledgement information,
wherein acknowledgement information is received on one of a first uplink control channel resource and a second uplink control channel resource, the first uplink control channel resource is acquired based on a first control channel element (CCE) used to transmit the PDCCH, for a transmission mode that supports up to two transport blocks (TBs), the second uplink control channel resource is acquired based on the first CCE+1,
wherein the first uplink control channel resource and the second uplink control channel resource are associated with a first cell.
11. The apparatus of claim 10, wherein the one of the first uplink control channel resource and the second uplink control channel resource is selected based on the acknowledgement information.
12. The apparatus of claim 10, wherein if the UE is configured with multiple cells, a third uplink control channel resource and a fourth uplink control channel resource are determined for a second cell having a transmission mode that supports up to two TBs.
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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.
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