Apparatus, system and method for efficient packet retransmission in a disaggregated GNB architecture

    公开(公告)号:US11575481B2

    公开(公告)日:2023-02-07

    申请号:US16994309

    申请日:2020-08-14

    Abstract: An apparatus of a Radio Access Network (RAN) node, a system, and a method. The apparatus includes one or more processors to generate a message including a downlink (DL) delivery data status (DDDS) frame including flags to indicate a presence of all associated optional information elements therein, the DDDS frame including information elements corresponding to an out-of-sequence delivery report for DL packet data convergence protocol (PDCP) protocol data units (PDUs) (PDCP PDUs) successfully delivered or delivered from the RAN node to a user equipment (UE); and cause transmission of the DDDS frame to a receiving node corresponding to the RAN node in a New Radio (NR) network, the receiving node hosting a NR packet data convergence protocol (PDCP) (NR PDCP) entity.

    APPARATUS, SYSTEM AND METHOD FOR EFFICIENT PACKET RETRANSMISSION IN A DISAGGREGATED GNB ARCHITECTURE

    公开(公告)号:US20200382254A1

    公开(公告)日:2020-12-03

    申请号:US16994309

    申请日:2020-08-14

    Abstract: An apparatus of a Radio Access Network (RAN) node, a system, and a method. The apparatus includes one or more processors to generate a message including a downlink (DL) delivery data status (DDDS) frame including flags to indicate a presence of all associated optional information elements therein, the DDDS frame including information elements corresponding to an out-of-sequence delivery report for DL packet data convergence protocol (PDCP) protocol data units (PDUs) (PDCP PDUs) successfully delivered or delivered from the RAN node to a user equipment (UE); and cause transmission of the DDDS frame to a receiving node corresponding to the RAN node in a New Radio (NR) network, the receiving node hosting a NR packet data convergence protocol (PDCP) (NR PDCP) entity.

    DYNAMIC RESOURCE SCALING AND VM MIGRATION IN NG-RAN

    公开(公告)号:US20190254090A1

    公开(公告)日:2019-08-15

    申请号:US16393709

    申请日:2019-04-24

    CPC classification number: H04W76/12 H04W24/04 H04W76/11 H04W76/22

    Abstract: Systems and methods of modifying the bearer context of a DRB of an E1 interface for a gNB are described. To modify the bearer context associated with a DRB for a particular UE, the gNB-CU-UP transmits a Bearer Context Modification Required message through the E1 interface and receives in response a Bearer Context Modification Confirm message that confirms the modification of the bearer context. The Bearer Context Modification Required message and Bearer Context Modification Confirm message both include the new GTP TEID and TNL address to be used after modification of the bearer context, a gNB-CU-CP UE E1AP ID that uniquely identifies a UE association over the E1 interface within the gNB-CU-CP, a gNB-CU-UP UE E1AP ID that uniquely identifies a UE association over the E1 interface within the gNB-CU-UP, and a DRB ID IE that uniquely identifies the DRB.

    DELAY MEASUREMENTS BETWEEN GNB-CU AND GNB-DU
    24.
    发明公开

    公开(公告)号:US20240357413A1

    公开(公告)日:2024-10-24

    申请号:US18580225

    申请日:2022-08-11

    Inventor: Jaemin Han Ziyi Li

    CPC classification number: H04W28/0236 H04L43/0852 H04W28/0268

    Abstract: A computer-readable storage medium stores instructions for execution by one or more processors of a base station. The instructions configure the base station for 5G-NR QoS monitoring and reporting and cause the base station to encode a Downlink User Data frame for transmission from a CU-UP to a DU of the base station. The Downlink User Data frame includes an indicator requesting a delivery status for a downlink data transmission. A Downlink Data Delivery Status frame is encoded for transmission from the DU to the CU-UP using an F1-U interface. The Downlink Data Delivery Status frame includes a feedback delay measured at the DU based on the indicator. The feedback delay indicates a time between reception of the Downlink User Data frame and transmission of the Downlink Data Delivery Status frame. A downlink or uplink delay associated with the F1-U interface is determined based on the feedback delay.

    TECHNOLOGIES TO REDUCE INTERRUPTION FOR NON-DUAL CONNECTIVITY (DC) BASED HANDOVER (HO)

    公开(公告)号:US20200374774A1

    公开(公告)日:2020-11-26

    申请号:US16993237

    申请日:2020-08-13

    Abstract: An apparatus of a Radio Access Network (RAN) node, a system, and a method. The apparatus includes one or more processors to, during a non-dual connectivity (non-DC) radio link control (RLC) acknowledged mode (AM) handover of a user equipment (UE) from a source RAN node to the RAN node: process a message including information on at least one of an uplink (UL) COUNT value, a downlink (DL) COUNT value, or a hyper frame number (HFN) corresponding to UL or DL packet data convergence protocol (PDCP) data units (DUs) communicated between the UE and the source RAN node; determine the at least one of the UL COUNT value, the DL COUNT value or the HFN from the message; and process the PDCP DUs based on the at least one of the UL COUNT value, the DL COUNT value.

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