Link dependent scheduling request format for URLLC
AssigneeQUALCOMM Incorporated
InventorsJing Jiang, Wanshi Chen, Chong Li
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Abstract
Certain aspects of the present disclosure relate to wireless communication systems, and more particularly, to link-dependent scheduling request (SR) formats for ultra-reliable low-latency communications (URLLC) in communication systems operating according to new radio (NR) technologies. A method is provided, that may be performed by a base station (BS) for wireless communications. The method includes determining one or more channel conditions for a link between the BS and a user equipment (UE). The BS assigns a SR format to the UE based on the one or more channel conditions. The UE receives the SR format assignment and transmits one or more SR transmissions to the BS according to the assigned SR format.
Claims22
A method for wireless communications by a base station (BS), comprising:
- configuring a user equipment (UE) with a plurality of scheduling request (SR) formats, each of the SR formats defining a payload size, a sequence length, a multiplexing level, a cyclic prefix (CP) length, and a sequence type for transmitting a SR for ultra-reliable low-latency communication (URLLC) when a buffer status report (BSR) is triggered at the UE without waiting for a periodic SR resource;
- determining one or more channel conditions for a link between the BS and the UE;
- and
- assigning one of the plurality of configured SR formats to the UE based on the determined one or more channel conditions.
A method for wireless communications by a user equipment (UE), comprising:
- receiving, from a base station (BS), an assignment of one of a plurality of scheduling request (SR) formats, each of the SR formats defining a payload size, a sequence length, a multiplexing level, a cyclic prefix (CP) length, and a sequence type for transmitting a SR for ultra-reliable low-latency communication (URLLC), and the assignment of the one of the plurality of SR formats being based on one or more channel conditions for a link between the UE and the BS;
- determining a buffer status report (BSR) is triggered at the UE;
- and
- transmitting one or more SRs to the BS according to the assigned SR format when the BSR is triggered at the UE and without waiting for a periodic SR resource.
An apparatus for wireless communications, comprising:
- means for configuring a user equipment (UE) with a plurality of scheduling request (SR) formats, each of the SR formats defining a payload size, a sequence length, a multiplexing level, a cyclic prefix (CP) length, and a sequence type for transmitting a SR for ultra-reliable low-latency communication (URLLC) when a buffer status report (BSR) is triggered at the UE without waiting for a periodic SR resource;
- means for determining one or more channel conditions for a link between the apparatus and the UE;
- and
- means for assigning one of the plurality of configured SR formats to the UE based on the one or more channel conditions.
An apparatus for wireless communications, comprising:
- means for receiving, from a base station (BS), an assignment of one of a plurality of scheduling request (SR) formats, each of the SR formats defining a payload size, a sequence length, a multiplexing level, a cyclic prefix (CP) length, and a sequence type for transmitting a SR for ultra-reliable low-latency communication (URLLC), and the assignment of the one of the plurality of SR formats being based on one or more channel conditions for a link between the apparatus and the BS;
- means for determining a buffer status report (BSR) is triggered at the apparatus;
- and
- means for transmitting one or more SRs to the BS according to the assignment of the assignment of the one of the plurality of SR formats when the BSR is triggered at the apparatus and without waiting for a periodic SR resource.
Dependencies are inferred from the claim text.