Techniques for managing transmissions in an unlicensed radio frequency spectrum band
A first method for wireless communications may comprise determining sizes of payloads of user equipments (UEs), determining whether to multiplex the payloads of the UEs based on the sizes of the payloads, and allocating codes or cyclic shifts to the UEs to transmit the payloads on a single interlace of resources. A second method for wireless communications may comprise determining a first code or a first cyclic shift used for a first transmission using an interlace of resources, and allocating second codes or second cyclic shifts to UEs for a second transmission, where the second transmission may be multiplexed with the first transmission on the interlace of resources. A third method for wireless communications may comprise allocating a first interlace of resources for a first transmission for occupying an unlicensed radio frequency spectrum band, and allocating a second interlace of resources, occupied by a base station, for a second transmission.
1. A method for wireless communications, comprising:
transmitting, to a base station from a first user equipment (UE), a scheduling request for uplink resources to transmit a first payload, wherein the scheduling request indicates a size of the first payload;
receiving, from the base station, an indication of an allocation of one or more codes or one or more cyclic shifts to transmit the first payload on a single interlace of resources, wherein the allocation is based at least in part on whether the first payload is to be multiplexed with a second payload of a second UE on the single interlace of resources, and wherein the allocation is based at least in part on the size of the first payload and a size of the second payload; and
transmitting, to the base station, the first payload on the single interlace of resources according to the one or more codes or the one or more cyclic shifts.
2. The method of claim 1 , wherein receiving the one or more codes or the one or more cyclic shifts to transmit the first payload comprises:
receiving at least two codes or cyclic shifts to transmit the first payload in a first transmission, and one or more additional payloads in a second transmission, wherein a first code or cyclic shift of the at least two codes or cyclic shifts is used for the first transmission, and a second code or cyclic shift of the at least two codes or cyclic shifts is used for the second transmission.
3. The method of claim 2 , wherein the first payload and the one or more additional payloads are multiplexed on the single interlace of resources using at least two cyclic shifts of the one or more cyclic shifts, or code division multiplexed on the single interlace of resources using at least two codes of the one or more codes.
4. The method of claim 1 , wherein the single interlace of resources comprise a plurality of uplink resources that are structured to allow the first UE to transmit bits in the single interlace of resources, using the at least one of the one or more codes or the one or more cyclic shifts.
5. The method of claim 1 , wherein the one or more codes are one or more Walsh codes.
6. The method of claim 1 , wherein the single interlace of resources comprise a plurality of uplink resources that are structured using physical uplink control channel (PUCCH) format 2.
7. The method of claim 1 , wherein the single interlace of resources comprise a plurality of uplink resources that are structured using physical uplink control channel (PUCCH) format 3.
8. The method of claim 1 , further comprising:
receiving, from the base station, an instruction to the transmit the first payload on the single interlace of resources via a radio resource control (RRC) signal, or a downlink grant.
9. The method of claim 1 , wherein the single interlace of resources is included in a channel of an unlicensed spectrum or in a channel associated with a long term evolution (LTE) network.
10. The method of claim 1 , wherein the size of the first payload is less than a payload size threshold.
11. An apparatus for wireless communication, comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
transmit, to a base station from a first user equipment (UE), a scheduling request for uplink resources to transmit a first payload, wherein the scheduling request indicates a size of the first payload;
receive, from the base station, an indication of an allocation of one or more codes or one or more cyclic shifts to transmit the first payload on a single interlace of resources, wherein the allocation is based at least in part on whether the first payload is to be multiplexed with a second payload of a second UE on the single interlace of resources, and wherein the allocation is based at least in part on the size of the first payload and a size of the second payload; and
transmit, to the base station, the first payload on the single interlace of resources according to the one or more codes or the one or more cyclic shifts.
12. The apparatus of claim 11 , wherein the instructions for receiving the one or more codes or the one or more cyclic shifts to transmit the first payload are executable by the processor to cause the apparatus to:
receive at least two codes or cyclic shifts to transmit the first payload in a first transmission, and one or more additional payloads in a second transmission, wherein a first code or cyclic shift of the at least two codes or cyclic shifts is used for the first transmission, and a second code or cyclic shift of the at least two codes or cyclic shifts is used for the second transmission.
13. The apparatus of claim 12 , wherein the first payload and the one or more additional payloads are multiplexed on the single interlace of resources using at least two cyclic shifts of the one or more cyclic shifts, or code division multiplexed on the single interlace of resources using at least two codes of the one or more codes.
14. The method of claim 11 , wherein the single interlace of resources comprise a plurality of uplink resources that are structured to allow the first UE to transmit bits in the single interlace of resources, using the at least one of the one or more codes or the one or more cyclic shifts.
15. The method of claim 11 , wherein the one or more codes are one or more Walsh codes.
16. The method of claim 11 , wherein the single interlace of resources comprise a plurality of uplink resources that are structured using physical uplink control channel (PUCCH) format 2, PUCCH format 3, or a combination thereof.
17. The apparatus of claim 11 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the base station, an instruction to the transmit the first payload on the single interlace of resources via a radio resource control (RRC) signal, or a downlink grant.