Method and apparatus for processing PDCP control data in system supporting high-reliability low-latency service
The disclosure relates to A communication method and system for converging a 5 th -Generation (5G) communication system for supporting higher data rates beyond a 4 th -Generation (4G) system with a technology for Internet of Things (IoT). 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. A method for efficiently processing PDCP control data of a PDCP layer device if a system supporting a high-reliability low-latency service employs a packet duplication transmission technology is provided.
1. A method performed by a terminal in a wireless communication system, the method comprising:
identifying whether a service data adaptation protocol (SDAP) header is configured and whether an Ethernet header compression (EHC) is configured;
and
performing EHC for data in a packet data convergence protocol (PDCP) layer, in case that the EHC is configured,
wherein an EHC header is located after the SDAP header, and
wherein a PDCP header and the SDAP header are not ciphered.
2. The method of claim 1 , wherein the EHC header, which is generated in the PDCP layer, is ciphered.
3. The method of claim 1 , wherein the EHC header is not generated for an SDAP control protocol data unit (PDU).
4. The method of claim 1 , wherein in case that both the EHC and a robust header compression (ROHC) are configured, an ROHC header is located after the EHC header.
5. A method performed by a base station in a wireless communication system, the method comprising:
identifying whether a service data adaptation protocol (SDAP) header is configured and whether an Ethernet header compression (EHC) is configured; and
performing EHC for data in a packet data convergence protocol (PDCP) layer, in case that the EHC is configured,
wherein an EHC header is located after the SDAP header, and
wherein a PDCP header and the SDAP header are not ciphered.
6. The method of claim 5 , wherein the EHC header, which is generated in the PDCP layer, is ciphered.
7. The method of claim 5 , wherein the EHC header is not generated for an SDAP control protocol data unit (PDU).
8. The method of claim 5 , wherein in case that both the EHC and a robust header compression (ROHC) are configured, an ROHC header is located after the EHC header.
9. A terminal comprising:
a transceiver capable of transmitting or receiving at least one signal: and
a controller coupled to the transceiver,
wherein the controller is configured to:
identify whether a service data adaptation protocol (SDAP) header is configured and whether an Ethernet header compression (EHC) is configured, and
perform EHC for data in a packet data convergence protocol (PDCP) layer, in case that the EHC is configured,
wherein an EHC header is located after the SDAP header, and
wherein a PDCP header and the SDAP header are not ciphered.
10. The terminal of claim 9 , wherein the EHC header, which is generated in the PDCP layer, is ciphered.
11. The terminal of claim 9 , wherein the EHC header is not generated for an SDAP control protocol data unit (PDU).
12. The terminal of claim 9 , wherein in case that both the EHC and a robust header compression (ROHC) are configured, an ROHC header is located after the EHC header.
13. A base station comprising:
a transceiver capable of transmitting or receiving at least one signal; and
a controller coupled to the transceiver,
wherein the controller is configured to:
identify whether a service data adaptation protocol (SDAP) header is configured and whether an Ethernet header compression (EHC) is configured, and
perform Ethernet header compression for data in a packet data convergence protocol (PDCP) layer, in case that the EHC is configured,
wherein an EHC header is located after the SDAP header, and
wherein a PDCP header and the SDAP header are not ciphered.
14. The base station of claim 13 , wherein the EHC header, which is generated in the PDCP layer, is ciphered.
15. The base station of claim 13 ,
wherein the EHC header is not generated for an SDAP control protocol data unit (PDU), and
wherein in case that both the EHC and a robust header compression (ROHC) are configured, an ROHC header is located after the EHC header.