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1. WO2020109892 - METHODS FOR SEPARATING REFERENCE SYMBOLS AND USER DATA IN A LOWER LAYER SPLIT

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

Claims:

1. A method of operating a radio unit, RU, in a network node of a wireless communication system, comprising:

receiving (902), at the radio unit and from a lower-layer split central unit, LLS-CU, a plurality of downlink signals that include reference symbols, RS, and user data downlink, UD-DL, messages to be transmitted to a user equipment, UE, over a wireless interface;

accumulating (904) received data corresponding to the plurality of downlink signals into a concentrated data format; and

receiving (900) a data-associated control information, DACI, message including a section description associated with the plurality of downlink signals, the DACI message including an indication of how to perform the accumulating data operation.

2. The method of Claim 1 , wherein the plurality of downlink signals that include the RS and UD-DL messages comprise independent ranges in time and/or frequency, the method further comprising determining a signaling priority of overlapping resource elements, RE, samples and/or overlapping beam forming commands.

3. The method of any of Claims 1 -2, further comprising multiplexing (906) the RS and the UD-DL in the RU.

4. The method of any of Claims 2-3, further comprising mapping (908) the RE samples to a plurality of RU ports and generating a beam vector that includes a plurality of RE beam weights that correspond to respective ones of the plurality of RU ports.

5. The method of any of Claims 1 -4, wherein the DACI message comprises a field that indicates which REs are omitted from a user plane UD-DL, wherein the field comprises a combination of a RE mask that indicates which of the RE’s a user is using and a symbol mask that indicates symbols in which the RE mask is valid.

6. The method of any of Claims 1 -5, wherein the DACI message comprises a field that indicates a priority of a section of the PRB, wherein the indication includes information that the section over-rules a previous section.

7. The method of any of Claims 1 -6, wherein the DACI message comprises a field that indicates which of a plurality of RE’s is not included in the UD-DL message.

8. The method of any of Claims 1 -7, wherein the DACI message comprises a field that indicates a priority of a RE sample, wherein a priority RE sample will not be overwritten by a subsequent UD-DL message.

9. The method of any of Claims 1 -8, wherein the DACI message includes data regarding which direction a given one of a plurality of RU ports will transmit in.

10. A radio unit, RU, in a network node of a wireless communication system, comprising:

a processor circuit;

a transceiver that is coupled to the processor circuit and that is configured to communicate with a lower-layer split central unit, LLS-CU; and

a memory that is coupled to the processor circuit, the memory comprising machine readable program instructions that, when executed by the processor circuit, cause the RU to perform operations comprising:

receiving (902), at the RU and from the LLS-CU, a plurality of downlink symbols and downlink user data to be transmitted to a user equipment, UE, over a wireless interface;

accumulating (904) data corresponding to the plurality of downlink symbols into a concentrated data format;

receiving (900) a data-associated control information, DACI, message including a section description associated with the plurality of downlink signals, the DACI message including an indication of how to perform the accumulating data operation;

multiplexing (906) the plurality of downlink symbols and/or the plurality of user data messages in the RU; and

mapping (908) RE samples in the plurality of downlink symbols and/or downlink user data to be transmitted to the UE, to a plurality of RU ports.

1 1. The network node of Claim 10, wherein the DACI message comprises a field that indicates which REs are omitted from a user plane UD-DL,

wherein the field comprises a combination of a RE mask that indicates which of the RE’s a user is using and a symbol mask that indicates symbols in which the RE mask is valid.

12. The network node of any of Claims 10-1 1 , wherein the DACI message comprises a field that indicates a priority of a section of the PRB,

wherein the indication includes information that the section over-rules a previous section.

13. The network node of any of Claims 10-12, wherein the RS and the UD-DL data to be transmitted to the user equipment are received in a user data down link UD-DL message, and

wherein the DACI message comprises a field that indicates which of a plurality of RE’s is not included in the UD-DL message.

14. The network node of any of Claims 10-13, wherein the DACI message comprises a field that indicates a priority of a RE sample,

wherein a priority RE sample will not be overwritten by a subsequent UD-DL message.

15. The network node of any of Claims 10-14, wherein the DACI message includes data regarding which direction a given one of a plurality of RU ports will transmit in.

16. A non-transitory computer-readable medium having instructions stored therein that are executable by a processor circuit of a radio unit, RU, in a network node of a wireless communication system for causing the RU to perform operations comprising:

receiving (902), at the radio unit and from a lower-layer split central unit, LLS-CU, a plurality of downlink signals that include reference symbols, RS, and user data downlink, UD-DL, messages to be transmitted to a user equipment, UE, over a wireless interface;

accumulating (904) received data corresponding to the plurality of downlink signals into a concentrated data format; and

receiving (900) a data-associated control information, DACI, message including a section description associated with the plurality of downlink signals, the DACI message including an indication of how to perform the accumulating data operation.

17. The non-transitory computer-readable medium of Claim 16, wherein the instructions are further executable by the processor circuit for causing the RU to perform the operations of any of Claims 2-9.

18. A method of operating lower-layer split central unit, LLS-CU, in a network node of a wireless communication system, comprising:

sending (1002), without accumulating or multiplexing, to a radio unit, RU, a plurality of downlink signals that include reference symbols, RS, and user data downlink, UD-DL, messages to be transmitted to a user equipment, UE, over a wireless interface; and

sending (1000), to the RU, a data-associated control information, DACI, message including a section description that instructs the RU how to accumulate the plurality of downlink signals.

19. The method of Claim 18, wherein the plurality of downlink signals comprise independent ranges in time and/or frequency.

20. The method of any of Claims 18-19, wherein the DACI message comprises a field that indicates which REs are omitted from a user plane UD-DL,

wherein the field comprises a combination of a RE mask that indicates which of the RE’s a user is using and a symbol mask that indicates symbols in which the RE mask is valid.

21. The method of any of Claims 18-20, wherein the DACI message comprises a field that indicates a priority of a section of the PRB,

wherein the indication includes information that the section over-rules a previous section.

22. The method of any of Claims 18-21 , wherein the RS and the UD-DL data to be transmitted to the user equipment are received in a user data down link UD-DL message, and

wherein the DACI message comprises a field that indicates which of a plurality of RE’s is not included in the UD-DL message.

23. The method of any of Claims 18-22, wherein the DACI message comprises a field that indicates a priority of a RE sample,

wherein a priority RE sample will not be overwritten by a subsequent UD-DL message.

24. The method of any of Claims 18-23, wherein the DACI message includes data regarding which direction a given one of a plurality of RU ports will transmit in.

25. A lower-layer split central unit, LLS-CU, in a network node of a wireless communication system, comprising:

a processor circuit;

a transceiver that is coupled to the processor circuit and that is configured to communicate with the LLS-CU; and

a memory that is coupled to the processor circuit, the memory comprising machine readable program instructions that, when executed by the processor circuit, cause the LLS-CU to perform operations comprising:

sending (1002), without accumulating or multiplexing, to a radio unit, RU, a plurality of downlink signals that include reference symbols, RS, and user

data downlink, UD-DL, messages to be transmitted to a user equipment, UE, over a wireless interface; and

sending (1000), to the RU, a data-associated control information, DACI, message including a section description that instructs the RU how to accumulate the plurality of downlink signals.

26. The network node of Claim 25, wherein the DACI message comprises a field that indicates which REs are omitted from a user plane UD-DL,

wherein the field comprises a combination of a RE mask that indicates which of the RE’s a user is using and a symbol mask that indicates symbols in which the RE mask is valid.

27. The network node of any of Claims 25-26, wherein the DACI message comprises a field that indicates a priority of a section of the PRB,

wherein the indication includes information that the section over-rules a previous section.

28. The network node of any of Claims 25-27, wherein the RS and the UD-DL data to be transmitted to the user equipment are received in a user data down link UD-DL message, and

wherein the DACI message comprises a field that indicates which of a plurality of RE’s is not included in the UD-DL message.

29. The network node of any of Claims 25-28, wherein the DACI message comprises a field that indicates a priority of a RE sample,

wherein a priority RE sample will not be overwritten by a subsequent UD-DL message.

30. The network node of any of Claims 25-29, wherein the DACI message includes data regarding which direction a given one of a plurality of RU ports will transmit in.

31. A non-transitory computer-readable medium having instructions stored therein that are executable by a processor circuit of a lower-layer split central unit, LLS-CU, in a network node of a wireless communication system for causing the LLS-CU to perform operations comprising:

sending (1002), without accumulating or multiplexing, to a radio unit, RU, a plurality of downlink signals that include reference symbols, RS, and user data downlink, UD-DL, messages to be transmitted to a user equipment, UE, over a wireless interface; and

sending (1000), to the RU, a data-associated control information, DACI, message including a section description that instructs the RU how to accumulate the plurality of downlink signals.

32. The non-transitory computer-readable medium of Claim 31 , wherein the instructions are further executable by the processor circuit for causing the LLS-CU to perform the operations of any of Claims 19-24.