User data compression method and apparatus for preventing data loss in wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorDonggun Kim
Life of this patent
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Abstract
A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) is provided. The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure provides a method and an apparatus for preventing data loss.
Claims18
A method performed by a transmitting device in a wireless communication system, the method comprising:
- receiving, from a receiving device, a packet data convergence protocol (PDCP) control protocol data unit (PDU) including information indicating a check sum failure;
- discarding a first PDCP PDU based on the information, wherein a PDCP processing is performed for the first PDCP PDU and the first PDCP PDU is not submitted to a lower layer;
- delivering a first indicator to the lower layer based on the information, the first indicator indicating a discard of data which was delivered to the lower layer;
- performing a first PDCP processing for a PDCP service data unit (SDU) corresponding to the discarded first PDCP PDU;
- and
- transmitting, to the receiving device, a second PDCP PDU generated based on the first PDCP processing.
A method performed by a receiving device in a wireless communication system, the method comprising:
- identifying that a check sum failure has occurred;
- transmitting, to a transmitting device, a packet data convergence protocol (PDCP) control protocol data unit (PDU) including information indicating the check sum failure;
- receiving, from the transmitting device, a first PDCP PDU after transmitting of the PDCP control PDU;
- discarding at least one PDCP PDU among the first PDCP PDU, wherein a PDCP header of the discarded at least one PDCP PDU does not include a first indicator indicating a reset of an uplink data compression (UDC) buffer of the transmitting device;
- and
- resetting a UDC buffer of the receiving device, based on the first indicator included in a remaining PDCP PDU among the first PDCP PDU.
A transmitting device in a wireless communication system, the transmitting device comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller configured to:
- receive, from a receiving device, a packet data convergence protocol (PDCP) control protocol data unit (PDU) including information indicating a check sum failure,
- discard a first PDCP PDU based on the information, wherein a PDCP processing is performed for the first PDCP PDU and the first PDCP PDU is not submitted to a lower layer,
- deliver a first indicator to the lower layer based on the information, the first indicator indicating a discard of data which was delivered to the lower layer,
- perform a first PDCP processing for a PDCP service data unit (SDU) corresponding to the discarded first PDCP PDU, and
- transmit, to the receiving device, a second PDCP PDU generated based on the first PDCP processing.
A receiving device in a wireless communication system, the receiving device comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller configured to:
- identify that a check sum failure has occurred,
- transmit, to a transmitting device, a packet data convergence protocol (PDCP) control protocol data unit (PDU) including information indicating the check sum failure,
- receive, from the transmitting device, a first PDCP PDU after transmitting of the PDCP control PDU,
- discard at least one PDCP PDU among the first PDCP PDU, wherein a PDCP header of the discarded at least one PDCP PDU does not include a first indicator indicating a reset of an uplink data compression (UDC) buffer of the transmitting device, and
- reset a UDC buffer of the receiving device, based on the first indicator included in a remaining PDCP PDU among the first PDCP PDU.
Dependencies are inferred from the claim text.