LTE;. Evolved Universal Terrestrial Radio Access (E-UTRA);. Packet Data Convergence Protocol (PDCP) specification. (3GPP TS version Release. PDCP is an abbreviation for Packet Data Convergence Protocol. This protocol is specified by 3GPP in TS for UMTS, TS for LTE and TS for 5G New Radio [NR). The PDCP is located in the Radio Protocol Stack in the UMTS/LTE/5G Air 3GPP TS Packet Data Convergence Protocol (PDCP ) specification. Packet Data Convergence Protocol (PDCP) specification. (Release 8). The present document has been developed within the 3rd Generation Partnership Project.

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Hi Srini which wired connection u r talking? However, this layer can be pretty busy stack if you enables various additional features like Integrity, Ciphering and Header Compression.

For example, the method of the present invention can be implemented as codes or commands of a software program that can be executed by a processor, and can be saved in a storage medium e. Note that in LTE, both voice and data use packet switching.

Posted by Srini at These are configured by Higher Layer Signaling message i. The method of the present invention explained thus far can be implemented in software, hardware, or a combination thereof. As illustrated in FIG.

A physical channel e.

It is a successor of 2G and 3G families of standards. In addition to the integrity protection function, the security handling unit also has a ciphering function that maintains data security, and such ciphering function applies to both U-plane data and C-plane data. Integrity Information is not valid for DRB packets. This only happens during PDCP reestablishment time. An interface for transmitting user traffic or control traffic may be used between the eNBs Also, certain aspects of spfc related or conventional art, which may be a basis for the present invention, may have not been explained but could be understood by those skilled in the art.


The invention claimed is: ROHC context is reset if it is applicable. Lte was the first and only technology recognized by.

Pdf this chapter provides a short introduction to the sec over longterm evolution volte. The main services and functions of the pdcp sublayer for the user plane include. Interface to inform SRB data indications: Then you may ask ‘how we can configure PDCP operation? The method of the present invention explained thus far can be implemented in software, hardware, or a combination thereof. Lte a is primarily designed to help support and accelerate the overall development and test program.

I have a feeling control plane does not delete each one of them. Pddp there are any pending DL packets, they get retransmitted with new cipher context.

US20130170496A1 – Pdcp packet transmission method – Google Patents

Last packet is expected to be indicated explicitly. The features described herein can be applied to the so-called LTE Long Term Evolution technologies, which are being developed after 3G mobile communications in anticipation of rapidly increasing data traffic. If ciphering spex properly performed, no data loss occurs.

You will refer to this table a lot when you try to decode PDCP data yourself. An interface for transmitting user traffic or control traffic may be used between the eNBs LTE Long Term Evolution is one of the 4th generation wireless standards designed to increase the capacity and speed of mobile telephone networks.

But putting all together the following diagram from 3GPP Method and apparatus for performing handover using packet data convergence protocol pdcp reordering in mobile pdco system.


Namely, the function of the header compressor is applied only for the U-plane data, and the integrity protection function among the functions of the security handling unit is applied only for the C-plane data.

US8804742B2 – PDCP packet transmission method – Google Patents

Determination of acceptable sequence number ranges in a communications protocol. In regards to Status message over X2AP: The NAS control protocol may use three different states. Please click button to get lte and the evolution to 4g wireless book now.

Normally it is active. So for any process, I usually tries to define what is the inputs and lfe is the final outputs.

Packet Data Convergence Protocol .pdf

If somebody finds any inconsistency or if i had made any mistakes, please drop a comment or send an email. It helps control plane to corelate its context easily. Fourth-generation mobile communication is the fourth generation of wireless mobile communications standards. I thought remote peer waits on the packet sequence number endlessly.

If PDCP layer receives duplicate packets packets with same sequence numberthe it discards them and does not send them to upper layers. The header compression function allows efficient transmission of Internet protocol IP packet, such as an IPv4 or IPv6 packet through a radio interface that has a relatively narrow bandwidth. The method of claim 1wherein the predetermined number is based on the size of a reordering window.

One thing to note is that these procedures are described from UE context.