PDCP stands for Packet Data Convergence Protocol . It is a layer of 5G NR radio protocol stack. It is placed top of the RLC Layer and below of the SDAP layer(for user plane) or RRC layer (for control plane) in the Radio Protocol Stack in 5G NR. Due to header compression functionality, it is called as convergence …5 Oca 2022
Read moreWhat is PDCP duplication?
Indicates whether or not uplink duplication status at the time of receiving this IE is configured and activated as specified in TS 38.323 [5]. The presence of this field indicates that duplication is configured. PDCP duplication is not configured for CA packet duplication of LTE RLC bearer.
Read moreWhat is PDCP PDU?
PDCP Header Compression : PDCP removes IP header (Minimum 20 bytes) from PDU, and adds Token of 1-4 bytes . Which provides a tremendous savings in the amount of header that would otherwise have to go over the air. RLC layer does segmentation of these SDUS to make the RLC PDUs.
Read moreWhat is ciphering and deciphering in LTE?
Encryption/Ciphering: It refers to the process of encryption/ciphering by a sender and deciphering or decryption by a receiver . The sender ciphers the message using its key and a certain algorithm and sends it to the receiver, who then decrypts it using the same key and algorithm.
Read moreWhat does PDCP do in LTE?
From UMTS, the main function of the PDCP layer has been the header compression of IP packets – this is the reason why it is called the Packet Data Convergence Protocol. In LTE, the PDCP layer has evolved to support a security function; that is, integrity protection and ciphering .
Read moreWhat is the difference between ciphering and integrity protection in LTE?
Ciphering is needed when you want that only authorized people can ACCESS TO SEE the data. Integrity is when authorized people can ACCESS TO MODIFY the data .
Read moreWhat is PDCP discard timer?
A PDCP layer sets a timer and discards a PDCP SDU upon expiration of the timer . The timer may be set upon receiving the PDCP SDU from an upper layer or upon submitting the PDCP SDU to a lower layer for transmission. The timer and a radio link control (RLC) discard timer may be coordinated.
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