Orthogonal cover codes for uplink transmissions
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration associated with an orthogonal cover code (OCC), wherein the configuration indicates a multiplexing order, an OCC codeword for multiplexing, and a type of OCC, and the type of OCC is one of: frequency domain OCC (FD-OCC), time domain OCC (TD-OCC), sub physical resource block (sub-PRB) OCC, or sub-slot OCC. The UE may apply, based at least in part on the configuration, the OCC to an uplink transmission. The UE may transmit the uplink transmission with the OCC applied based at least in part on the configuration. Numerous other aspects are described.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories; and
one or more processors coupled with the one or more memories and configured to cause the UE to:
receive a configuration associated with an orthogonal cover code (OCC), wherein the configuration indicates a multiplexing order, an OCC codeword for multiplexing, and a type of OCC, the type of OCC being a sub physical resource block (sub-PRB) OCC;
apply, based at least in part on the configuration, the sub-PRB OCC to an uplink transmission in a frequency domain such that an allocated subcarrier power is boosted by a factor and some subcarriers are left empty, wherein the factor is associated with a number of multiplexed UEs; and
transmit the uplink transmission with the sub-PRB OCC applied based at least in part on the configuration.
2 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:
transmit capability signaling that indicates whether the UE is capable of supporting multiplexing, wherein a capability for multiplexing is based at least in part on a phase coherence capability associated with the UE, and the configuration is received based at least in part on the capability signaling.
3 . The apparatus of claim 1 , wherein the multiplexing order is associated with a number of UEs multiplexed by OCC, and a set of resources are shared simultaneously by the number of UEs.
4 . The apparatus of claim 1 , wherein the OCC is associated with transport blocks over multiple slots (TBoMS) or a repetition-based transmission, or the OCC is associated with a non-repetition-based transmission.
5 . The apparatus of claim 1 ,
wherein the sub-PRB OCC is applied within a PRB or across PRBs, or multiplexed UEs are allocated on some sub-carriers within the PRB based at least in part on the sub-PRB OCC.
6 . The apparatus of claim 1 , wherein the uplink transmission is a data transmission or a reference signal transmission.
7 . The apparatus of claim 1 , wherein the OCC is associated with an orthogonal matrix.
8 . The apparatus of claim 1 , wherein a transport block size (TBS) or a number of information bits is based at least in part on the multiplexing order.
9 . An apparatus for wireless communication at a network node, comprising:
one or more memories; and
one or more processors coupled with the one or more memories and configured to cause the network node to:
transmit a configuration associated with an orthogonal cover code (OCC), wherein the configuration indicates a multiplexing order, an OCC codeword for multiplexing, and a type of OCC, the type of OCC being a sub physical resource block (sub-PRB) OCC; and
receive an uplink transmission with the sub-PRB OCC applied to the uplink transmission in a frequency domain such that an allocated subcarrier power is boosted by a factor and some subcarriers are left empty, wherein the factor is associated with a number of multiplexed UEs, based at least in part on the configuration.
10 . The apparatus of claim 9 , wherein the one or more processors are further configured to cause the network node to:
receive capability signaling that indicates whether a user equipment (UE) is capable of supporting multiplexing, wherein a capability for multiplexing is based at least in part on a phase coherence capability associated with the UE, and the configuration is transmitted based at least in part on the capability signaling.
11 . The apparatus of claim 9 , wherein the multiplexing order is associated with a number of user equipments (UEs) multiplexed by OCC, and a set of resources are shared simultaneously by the number of UEs.
12 . The apparatus of claim 9 , wherein the OCC is associated with transport blocks over multiple slots (TBoMS) or a repetition-based transmission, or the OCC is associated with a non-repetition-based transmission.
13 . The apparatus of claim 9 , wherein the sub-PRB OCC is applied within a PRB or across PRBs, or multiplexed UEs are allocated on some sub-carriers within the PRB based at least in part on the sub-PRB OCC.
14 . The apparatus of claim 9 , wherein the uplink transmission is a data transmission or a reference signal transmission.
15 . The apparatus of claim 9 , wherein the OCC is associated with an orthogonal matrix.
16 . The apparatus of claim 9 , wherein a transport block size (TBS) or a number of information bits is based at least in part on the multiplexing order.
17 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving a configuration associated with an orthogonal cover code (OCC), wherein the configuration indicates a multiplexing order, an OCC codeword for multiplexing, and a type of OCC, the type of OCC being a sub physical resource block (sub-PRB) OCC;
applying, based at least in part on the configuration, the sub-PRB OCC to an uplink transmission in a frequency domain such that an allocated subcarrier power is boosted by a factor and some subcarriers are left empty, wherein the factor is associated with a number of multiplexed UEs; and
transmitting the uplink transmission with the sub-PRB OCC applied based at least in part on the configuration.
18 . The method of claim 17 , further comprising: transmitting capability signaling that indicates whether the UE is capable of supporting multiplexing, wherein a capability for multiplexing is based at least in part on a phase coherence capability associated with the UE, and the configuration is received based at least in part on the capability signaling.
19 . The method of claim 17 , wherein: the sub-PRB OCC is applied within a PRB or across PRBs, or multiplexed UEs are allocated on some sub-carriers within the PRB based at least in part on the sub-PRB OCC.
20 . The method of claim 17 , wherein the multiplexing order is associated with a number of UEs multiplexed by OCC, and a set of resources are shared simultaneously by the number of UEs.
21 . The method of claim 17 , wherein the OCC is associated with transport blocks over multiple slots (TBoMS) or a repetition-based transmission, or the OCC is associated with a non-repetition-based transmission.
22 . The method of claim 17 , wherein the uplink transmission is a data transmission or a reference signal transmission.
23 . The method of claim 17 , wherein the OCC is associated with an orthogonal matrix.
24 . A method of wireless communication performed by a network node, comprising:
transmitting a configuration associated with an orthogonal cover code (OCC), wherein the configuration indicates a multiplexing order, an OCC codeword for multiplexing, and a type of OCC, the type of OCC being a sub physical resource block (sub-PRB) OCC; and
receiving an uplink transmission with the sub-PRB OCC applied to the uplink transmission in a frequency domain such that an allocated subcarrier power is boosted by a factor and some subcarriers are left empty, wherein the factor is associated with a number of multiplexed UEs, based at least in part on the configuration.
25 . The method of claim 24 , further comprising: receiving capability signaling that indicates whether a user equipment (UE) is capable of supporting multiplexing, wherein a capability for multiplexing is based at least in part on a phase coherence capability associated with the UE, and the configuration is transmitted based at least in part on the capability signaling.
26 . The method of claim 24 , wherein: the sub-PRB OCC is applied within a PRB or across PRBs, or multiplexed UEs are allocated on some sub-carriers within the PRB based at least in part on the sub-PRB OCC.
27 . The method of claim 24 , wherein the multiplexing order is associated with a number of UEs multiplexed by OCC, and a set of resources are shared simultaneously by the number of UEs.
28 . The method of claim 24 , wherein the OCC is associated with transport blocks over multiple slots (TBoMS) or a repetition-based transmission, or the OCC is associated with a non-repetition-based transmission.
29 . The method of claim 24 , wherein the uplink transmission is a data transmission or a reference signal transmission.
30 . The method of claim 24 , wherein the OCC is associated with an orthogonal matrix.