System and method for coexistence of grant-free and grant-based uplink traffic
First Claim
Patent Images
1. A method in a network element, the method comprising:
- scheduling uplink grant-based traffic in a first frequency partition that is not used for uplink grant-free traffic;
mapping a plurality of UEs for uplink grant-free transmission to a corresponding plurality of 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 of the second frequency partition;
scheduling uplink grant-based traffic in at least one time-frequency region of the second frequency partition, such that;
for a 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, the time-frequency region corresponding to each of at least one of the uplink grant-free transmissions configured for the UE overlaps with the at least one time-frequency region of the second frequency partition in which uplink grant-based traffic has been scheduled, and the time-frequency region corresponding to each of at least one of the uplink grant-free transmissions configured for the UE does not overlap with the at least one time-frequency region of the second frequency partition in which uplink grant-based traffic has been scheduled;
said scheduling comprising transmitting scheduling information to at least one UE in order to schedule the uplink grant-based traffic in the first frequency partition and in the second frequency partition;
receiving grant-based traffic from said at least one UE based on said scheduling in the first frequency partition and the second frequency partition;
receiving grant-free traffic based on said mapping from at least one UE of said plurality of UEs.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
21 Claims
-
1. A method in a network element, the method comprising:
-
scheduling uplink grant-based traffic in a first frequency partition that is not used for uplink grant-free traffic; mapping a plurality of UEs for uplink grant-free transmission to a corresponding plurality of 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 of the second frequency partition; scheduling uplink grant-based traffic in at least one time-frequency region of the second frequency partition, such that;
for a 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, the time-frequency region corresponding to each of at least one of the uplink grant-free transmissions configured for the UE overlaps with the at least one time-frequency region of the second frequency partition in which uplink grant-based traffic has been scheduled, and the time-frequency region corresponding to each of at least one of the uplink grant-free transmissions configured for the UE does not overlap with the at least one time-frequency region of the second frequency partition in which uplink grant-based traffic has been scheduled;said scheduling comprising transmitting scheduling information to at least one UE in order to schedule the uplink grant-based traffic in the first frequency partition and in the second frequency partition; receiving grant-based traffic from said at least one UE based on said scheduling in the first frequency partition and the second frequency partition; receiving grant-free traffic based on said mapping from at least one UE of said plurality of UEs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method in a network element, the method comprising:
-
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 and that is not used for grant-based traffic; mapping the UE for an uplink grant-free retransmission corresponding to said initial uplink grant-free transmission in at least one portion of the first frequency partition, such that; 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 first frequency partition, the second TTU duration being shorter than the first TTU duration; the at least one portion is spread in frequency across the first frequency partition and the at least one portion is within a time period having the second TTI duration; said scheduling comprising transmitting scheduling information to at least one UE to schedule the uplink grant-based traffic in the first frequency partition; receiving grant-based traffic from said at least one UE based on said scheduling in the first frequency partition; receiving grant-free traffic based on said mapping from at least one of UE of said plurality of UEs.
-
-
13. A network element comprising:
-
a scheduler for scheduling uplink grant-based traffic in a first frequency partition that is not used for uplink grant-free traffic; a mapper for mapping a plurality of UEs for uplink grant-free transmission to a corresponding plurality of 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 of the second frequency partition; wherein the scheduler is further configured to schedule uplink grant-based traffic in at least one time-frequency region of the second frequency partition, such that; for 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, the time-frequency region corresponding to each of at least one of the uplink grant-free transmissions configured for the UE overlaps with the at least one time-frequency region of the second frequency partition in which grant-based traffic has been scheduled, and the time-frequency region corresponding to each of at least one of the uplink grant-free transmissions configured for the UE does not overlap with the at least one time frequency region of the second frequency partition in which uplink grant-based traffic has been scheduled; a transmitter for transmitting scheduling information to at least one UE to schedule the uplink grant-based traffic in the first frequency partition and in the second frequency partition; a receiver for receiving grant-based traffic from said at least one UE based on said scheduling in the first frequency partition and the second frequency partition, and for receiving grant-free traffic based on said mapping from at least one UE of said plurality of UEs. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A network element comprising:
-
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 that is not used for grant-based traffic; and maps the UE for an uplink grant-free retransmission corresponding to said initial uplink grant-free transmission in at least one portion of the first frequency partition, such that; 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 first frequency partition, the second TTU duration being shorter than the first TTU duration; the at least one portion is spread in frequency across the first frequency partition, and the at least one portion is within a time period having the second TTI duration; a transmitter for transmitting scheduling information to at least one UE to schedule the uplink grant-based traffic in the first frequency partition; a receiver for receiving grant-based traffic from at least one UE based on said scheduling in the first frequency partition and for receiving grant-free traffic based on said mapping from said at least one UE.
-
Specification