Method to manage downlink data delivery status
Systems, methods, and apparatus for reporting a Downlink Data Delivery Status (DDDS) are disclosed herein. An example method includes a network node generating a DDDS frame including an indicator that a highest transmitted Packet Data Convergence Protocol (PDCP) Packet Data Unit (PDU) sequence number is present in the DDDS frame, an indicator that a highest successfully delivered PDCP PDU sequence number delivered is present in the DDDS frame, a desired buffer size for a data bearer, the highest transmitted PDCP PDU sequence number, and the highest successfully delivered PDCP PDU sequence number. The network node provides the DDDS frame to a second network node.
1. A method performed by a network node for reporting a Downlink Data Delivery Status (DDDS), comprising:
generating a DDDS frame including:
an indicator that a highest transmitted Packet Data Convergence Protocol (PDCP) Packet Data Unit (PDU) sequence number is present in the DDDS frame;
an indicator that indicates a presence or an absence status of a highest successfully delivered PDCP PDU sequence number, wherein:
the indicator being set to a first value corresponds to the presence of the highest successfully delivered PDCP PDU sequence number in the DDDS frame; and
the indicator being set to a second value corresponds to the absence of the highest successfully delivered PDCP PDU sequence number in the DDDS frame;
a desired buffer size for a data bearer;
the highest transmitted PDCP PDU sequence number; and
the highest successfully delivered PDCP PDU sequence number; and
providing the DDDS frame to a second network node.
2. The method of claim 1 , further comprising:
providing the highest transmitted PDCP PDU sequence number based on operating in Radio Link Control Acknowledged Mode (RLC AM).
3. The method of claim 1 , wherein the DDDs frame facilitates the second network node to control downlink data flow.
4. The method of claim 1 , wherein the indicator that the highest transmitted PDCP PDU sequence number is present in the DDDS frame comprises:
a one bit value of 0 to indicate that the highest transmitted PDCP PDU sequence number is not present in the DDDS frame; or
a one bit value of 1 to indicate that the highest transmitted PDCP PDU sequence number is present in the DDDS frame.
5. The method of claim 1 , wherein the indicator of the highest successfully delivered PDCP PDU sequence number comprises a one bit value, wherein:
the one bit value set to 0 indicates that the highest successfully delivered PDCP PDU sequence number is absent in the DDDS frame; and
the one bit value set to 1 indicates that the highest successfully delivered PDCP PDU sequence number is present in the DDDS frame.
6. The method of claim 1 , further comprising:
receiving downlink data packets from the second network node; and
wirelessly transmitting the received downlink data packets to a user equipment (UE).
7. The method of claim 1 , wherein the highest transmitted PDCP PDU sequence number and the highest successfully delivered PDCP PDU sequence number comprise information elements (IEs).
8. A non-transitory computer readable memory comprising instructions which, when run on at least one processing circuit in a network node, cause the network node to perform operations comprising:
generating a Downlink Data Delivery Status (DDDS) frame including:
an indicator that a highest transmitted Packet Data Convergence Protocol (PDCP) Packet Data Unit (PDU) sequence number is present in the DDDS frame;
an indicator that indicates a presence or an absence of a highest successfully delivered PDCP PDU sequence number, wherein:
the indicator being set to a first value corresponds to the presence of the highest successfully delivered PDCP PDU sequence number in the DDDS frame; and
the indicator being set to a second value corresponds to the absence of the highest successfully delivered PDCP PDU sequence number in the DDDS frame;
a desired buffer size for a data bearer;
the highest transmitted PDCP PDU sequence number; and
the highest successfully delivered PDCP PDU sequence number; and
providing the DDDS frame to a second network node.
9. The non-transitory computer readable memory of claim 8 , the operations further comprising:
providing the highest transmitted PDCP PDU sequence number based on operating in Radio Link Control Acknowledged Mode (RLC AM).
10. The non-transitory computer readable memory of claim 8 , wherein the DDDs frame facilitates the second network node to control downlink data flow.
11. The non-transitory computer readable memory of claim 8 , wherein the indicator that the highest transmitted PDCP PDU sequence number is present in the DDDS frame comprises:
a one bit value of 0 to indicate that the highest transmitted PDCP PDU sequence number is not present in the DDDS frame; or
a one bit value of 1 to indicate that the highest transmitted PDCP PDU sequence number is present in the DDDS frame.
12. The non-transitory computer readable memory of claim 8 , wherein the indicator of the highest successfully delivered PDCP PDU sequence number comprises a one bit value, wherein:
the one bit value set to 0 indicates that the highest successfully delivered PDCP PDU sequence number is absent in the DDDS frame; and
the one bit value set to 1 indicates that the highest successfully delivered PDCP PDU sequence number is present in the DDDS frame.
13. The non-transitory computer readable memory of claim 8 , further comprising:
receiving downlink data packets from the second network node; and
wirelessly transmitting the received downlink data packets to a user equipment (UE).
14. The non-transitory computer readable memory of claim 8 , wherein the highest transmitted PDCP PDU sequence number and the highest successfully delivered PDCP PDU sequence number comprise information elements (IEs).
15. A network node comprising:
a memory; and
processing circuitry coupled to the memory and configured to read instructions from the memory to cause the network node to perform operations comprising:
generating a Downlink Data Delivery Status (DDDS) frame including:
an indicator that a highest transmitted Packet Data Convergence Protocol (PDCP) Packet Data Unit (PDU) sequence number is present in the DDDS frame;
an indicator that indicates a presence or an absence of a highest successfully delivered PDCP PDU sequence number, wherein:
the indicator being set to a first value corresponds to the presence of the highest successfully delivered PDCP PDU sequence number in the DDDS frame; and
the indicator being set to a second value corresponds to the absence of the highest successfully delivered PDCP PDU sequence number in the DDDS frame;
a desired buffer size for a data bearer;
the highest transmitted PDCP PDU sequence number; and
the highest successfully delivered PDCP PDU sequence number; and
providing the DDDS frame to a second network node.
16. The network node of claim 15 , the operations further comprising:
providing the highest transmitted PDCP PDU sequence number based on operating in Radio Link Control Acknowledged Mode (RLC AM).
17. The network node of claim 15 , wherein the DDDs frame facilitates the second network node to control downlink data flow.
18. The network node of claim 15 , wherein the indicator that the highest transmitted PDCP PDU sequence number is present in the DDDS frame comprises:
a one bit value of 0 to indicate that the highest transmitted PDCP PDU sequence number is not present in the DDDS frame; or
a one bit value of 1 to indicate that the highest transmitted PDCP PDU sequence number is present in the DDDS frame.
19. The network node of claim 15 , wherein the indicator that indicates the status of the highest successfully delivered PDCP PDU sequence number delivered comprises a one bit value, wherein:
the one bit value set to 0 indicates that the highest successfully delivered PDCP PDU sequence number is absent in the DDDS frame; and
the one bit value set to 1 indicates that the highest successfully delivered PDCP PDU sequence number is present in the DDDS frame.
20. The network node of claim 15 , the operations further comprising:
receiving downlink data packets from the second network node; and
wirelessly transmitting the received downlink data packets to a user equipment (UE).