MODULATION CODING SCHEME (MCS) INDICATION IN LTE UPLINK

摘要

Methods, systems, and devices for indicating a modulation coding scheme (MCS) in LTE are described. A user equipment (UE) may receive downlink control information (DCI) from an evolved Node B (eNB) that includes an uplink grant of resources. The DCI may be configured and have a format that conveys an MCS table reference. The UE may identify the MCS table reference and, based on the reference, identify a legacy MCS table or a non-legacy MCS table. The legacy MCS table may be associated with quadrature amplitude modulation (QAM) up to a first order, and the non-legacy MCS table may be associated with QAM up to a second order, the second order being higher than the first order. The UE may modulate and code information for uplink transmissions using the identified MCS table.

主权项

1. A method for wireless communications, comprising:
receiving, by a user equipment (UE), downlink control information (DCI) comprising an uplink (UL) grant of resources for the UE, the DCI having a DCI format and configured to convey a modulation coding scheme (MCS) table reference; identifying an MCS table from a plurality of MCS tables based on the MCS table reference conveyed in the DCI, wherein the MCS table defines modulation and coding to be utilized for UL transmissions on the resources granted in the UL grant; and sending one or more UL transmissions modulated and coded according to the MCS table.