SYSTEM AND METHOD FOR COEXISTENCE OF GRANT-FREE AND GRANT-BASED UPLINK TRAFFIC
First Claim
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1. A method comprising:
- scheduling uplink grant-based traffic in a first frequency partition;
mapping a plurality of UEs for uplink grant-free transmission to time-frequency regions of a second frequency partition that does not overlap with the first frequency partition by mapping each UE to a respective plurality of time-frequency regions;
scheduling uplink grant-based traffic in at least one portion of the second frequency partition, such that;
for at least one UE of said plurality of UEs configured for a plurality of uplink grant-free transmissions that includes an initial grant-free transmission and at least one grant-free retransmission using time-frequency regions indicated by said mapping, at least one of the uplink grant-free transmissions overlaps with the at least one portion of the second frequency partition, and at least one of the uplink grant-free transmissions does not overlap with the at least one portion of the second frequency partition.
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Abstract
Systems and methods of scheduling grant-based traffic and mapping resources for grant-free traffic are provided. Grant-based traffic is scheduled in a first frequency partition, and grant-free traffic is mapped in a second frequency partition. In a first option, grant-based traffic is also scheduled in part of the first partition, but in a limited manner that ensures a given device'"'"'s transmission and retransmissions do not all experience interference with the grant-based traffic. In another option, some grant-free traffic is mapped to part of the second partition and is spread in frequency across the second partition.
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Citations
21 Claims
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1. A method comprising:
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scheduling uplink grant-based traffic in a first frequency partition; mapping a plurality of UEs for uplink grant-free transmission to time-frequency regions of a second frequency partition that does not overlap with the first frequency partition by mapping each UE to a respective plurality of time-frequency regions; scheduling uplink grant-based traffic in at least one portion of the second frequency partition, such that; for at least one UE of said plurality of UEs configured for a plurality of uplink grant-free transmissions that includes an initial grant-free transmission and at least one grant-free retransmission using time-frequency regions indicated by said mapping, at least one of the uplink grant-free transmissions overlaps with the at least one portion of the second frequency partition, and at least one of the uplink grant-free transmissions does not overlap with the at least one portion of the second frequency partition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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scheduling uplink grant-based traffic in a first frequency partition; mapping a UE for an initial uplink grant-free transmission to a time-frequency region of a second frequency partition that does not overlap with the first frequency partition; mapping the UE for an uplink grant-free retransmission in at least one portion of the first frequency partition, such that; the at least one portion is spread across the first frequency partition; a first TTU duration is used for grant-based traffic in the first frequency partition, and a second TTU duration is used for grant-free transmission in the second frequency partition, and for grant-free transmission in the at least one portion of the second frequency partition, the second TTU duration being shorter than the first TTU duration.
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13. A network element comprising:
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a scheduler for scheduling uplink grant-based traffic in a first frequency partition; a mapper for mapping a plurality of UEs for uplink grant-free transmission to time-frequency regions of a second frequency partition that does not overlap with the first frequency partition by mapping each UE to a respective plurality of time-frequency regions; wherein the scheduler is further configured to schedule uplink grant-based traffic in at least one portion of the second frequency partition, such that; for at least one UE of said plurality of UEs configured for a plurality of uplink grant-free transmissions that includes an initial grant-free transmission and at least one grant-free retransmission using time-frequency regions indicated by said mapping, at least one of the uplink grant-free transmissions overlaps with the at least one portion of the second frequency partition, and at least one of the uplink grant-free transmissions does not overlap with the at least one portion of the second frequency partition. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A network element comprising:
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a scheduler for scheduling uplink grant-based traffic in a first frequency partition; and a mapper that; maps a UE for an initial uplink grant-free transmission to a time-frequency region of a second frequency partition that does not overlap with the first frequency partition; and maps the UE for an uplink grant-free retransmission in at least one portion of the first frequency partition, such that; the at least one portion is spread across the first frequency partition; and a first TTU duration is used for grant-based traffic in the first frequency partition, and a second TTU duration is used for grant-free transmission in the second frequency partition, and for grant-free transmission in the at least one portion of the second frequency partition, the second TTU duration being shorter than the first TTU duration.
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Specification