초록 ▼

The invention relates to an apparatus including: at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: obtain a channel quality indicator

The invention relates to an apparatus including: at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: obtain a channel quality indicator comprising a detector class indicator informing transmitter's capability to a high order modulation, and substitute the modulation, coding and rank scheme utilizing the high order modulation with a modulation, coding and rank scheme utilizing a lower order modulation and providing nearest similar performance, if the high order modulation is not supported by a receiver.

대표청구항 ▼

1. An apparatus comprising: at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:obtain from a user device a channel quality indicator co

1. An apparatus comprising: at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:obtain from a user device a channel quality indicator comprising a detector class indicator informing of the user device's capability to a high order modulation, andsubstitute the modulation, coding and rank scheme utilizing the high order modulation with a modulation, coding and rank scheme utilizing a lower order modulation and providing nearest similar performance, if the detector class indictor informs that the high order modulation is not supported by a receiver of the user device. 2. The apparatus of claim 1, further comprising causing the apparatus to: obtain a rank indicator from the user device. 3. The apparatus of claim 1, wherein the detector class indicator consists of one bit. 4. The apparatus of claim 1, wherein the substituting of the modulation, coding and rank scheme utilizing the high order modulation is carried out by modifying a modulation, coding and rank scheme table to contain only fields with at least one lower order modulation, ordetermining a second table wherein the modulation, coding and rank scheme utilizing the high order modulation is replaced with a modulation, coding and rank scheme using the at least one lower order modulation. 5. The apparatus of claim 1, wherein the high order modulation is 64-quadrature amplitude modulation. 6. The apparatus according to claim 5, wherein the high order modulation excludes quadrature phase shift keying (QPSK) and 16-quadrature amplitude modulation (16-QAM). 7. The apparatus of claim 1, the apparatus comprising a host, radio access node or server. 8. A method comprising: obtaining from a user device a channel quality indicator comprising a detector class indicator informing of the transmitter's capability to a high order modulation, andif the detector class indictor informs that the high order modulation is not supported by a receiver of the user device, substituting the modulation, coding and rank scheme utilizing the high order modulation with a modulation, coding and rank scheme utilizing a lower order modulation and providing nearest similar performance. 9. The method of claim 8, further comprising: obtaining a rank indicator from the user device. 10. The method of claim 8, wherein the detector class indicator consists of one bit. 11. The method of claim 8, wherein the substituting of the modulation, coding and rank scheme utilizing the high order modulation is carried out by modifying a modulation, coding and rank scheme table to contain only fields with at least one lower order modulation ordetermining a second table wherein the modulation, coding and rank scheme utilizing the high order modulation is replaced with a modulation, coding and rank scheme using the at least one lower order modulation. 12. The method of claim 8, wherein the high order modulation is 64-quadrature amplitude modulation. 13. The method according to claim 12, wherein the high order modulation excludes quadrature phase shift keying (QPSK) and 16-quadrature amplitude modulation (16-QAM). 14. An apparatus comprising means for carrying out the method according to claim 8. 15. A non-transitory computer readable memory tangibly storing a computer program comprising program code for controlling an apparatus to execute a process, the process comprising: obtaining from a user device a channel quality indicator comprising a detector class indicator informing of the user device's capability to a high order modulation, andif the high order modulation is not supported by a receiver of the user device, substituting the modulation, coding and rank scheme utilizing the high order modulation with a modulation, coding and rank scheme utilizing a lower order modulation and providing nearest similar performance. 16. The memory according to claim 15, the process further comprising: obtaining a rank indicator from the user device. 17. The memory according to claim 15, wherein the detector class indicator consists of one bit. 18. The memory according to claim 15, wherein the substituting of the modulation, coding and rank scheme utilizing the high order modulation is carried out by: modifying a modulation, coding and rank scheme table to contain only fields with at least one lower order modulation, ordetermining a second table wherein the modulation, coding and rank scheme utilizing the high order modulation is replaced with a modulation, coding and rank scheme using the at least one lower order modulation. 19. The memory according to claim 15, wherein the high order modulation is 64-quadrature amplitude modulation (64-QAM). 20. The memory according to claim 19, wherein the high order modulation excludes quadrature phase shift keying (QPSK) and 16-quadrature amplitude modulation (16-QAM).