Method and radio node for enabling use of high order modulation in a radio communication with a user equipment

摘要

A method and radio node (500) for enabling higher-order modulation in a radio communication with a first UE (502). A first table configuration comprises at least one of a first Modulation and Coding Scheme, MCS, table and a first Channel Quality Indicator, CQI, table which tables support a certain maximum modulation order. When the radio node (500) detects that a modulation order higher than the maximum modulation order of the first table configuration is potentially possible to use in the radio communication, the radio node (500) instructs the first UE (502) to apply a second table configuration which comprises at least one of a second MCS table and a second CQI table which second tables support the higher modulation order. At least one entry for at least one modulation order in the tables of the first table configuration is maintained in the tables of the second table configuration as a fall-back in case it is desirable to use the at least one modulation order of the first table configuration when the second table configuration is applied. Thereby, a higher data rate can be achieved in the radio communication.

主权项

1. A method performed by a radio node of a cellular network, the radio node being operable to apply a first table configuration in radio communications with User Equipments (UEs), the first table configuration comprising at least one of a first Modulation and Coding Scheme (MCS) table and a first Channel Quality Indicator (CQI) table, wherein the at least one of the first MCS table and the first CQI table support a certain maximum modulation order, the method comprising:
detecting that a higher modulation order, which is higher than the maximum modulation order of the first table configuration, is potentially possible to use in a radio communication between the radio node and a first UE; and instructing the first UE to apply a second table configuration in the radio communication, the second table configuration comprising at least one of a second MCS table and a second CQI table, wherein the at least one of the second MCS table and the second CQI table support the higher modulation order, wherein at least one entry for at least one modulation order in the at least one of the first MCS table and the first CQI table is maintained in the at least one of the second MCS table and the second CQI table as a fallback in case it is desirable to use the at least one modulation order in the at least one of the first MCS table and the first CQI table when the second table configuration is applied; and wherein the at least one modulation order in the at least one of the first MCS table and the first CQI table comprises a lowest modulation order of the first table configuration, and wherein the first entry for the lowest modulation order in the first MCS table is maintained in the second MCS table as the fallback, and an entry for the lowest coding rate of the lowest modulation order in the first CQI table is maintained in the second CQI table as the fallback.