Recent posts under tag pdcp

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What is reordering and in-order delivery, out-of-order delivery in pdcp

posted Jan 13, 2022 by Panyam Jagdeesh

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what is lossless data delivery in pdcp?

posted Jan 13, 2022 by Panyam Jagdeesh

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What are all the scenario for the ROHC failure?

posted Mar 9, 2020 by Himani

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Can we apply ROHC to other IP packets?Such as FTP downloading?

posted Feb 14, 2020 by Rohit Verma

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Can we activate PDCP duplication using PDCP control PDU?

posted Nov 8, 2019 by Jaganathan

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How PDCP duplication works in NR?

posted Oct 30, 2019 by Himani

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What is PDCP aggregation in NR?

posted Sep 24, 2019 by Debasis Mohapatra

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Why there is PDCP sequences number even though RLC has? .

posted Aug 14, 2019 by Debasis Mohapatra

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why Ciphering is done for both user plane and control plane data, why not integrity done for both data in PDCP protocol

posted Jun 15, 2019 by Srujan Kumar

+2 votes

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Why in RLC layer Seq. numbering is given to RLC SDU's and not to RLC PDU's?

posted Sep 21, 2018 by Mayur Jivanrao Nakade

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LTE security , ciphering activation time

posted Aug 24, 2018 by Pdk

+1 vote

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What are all the scenario ROHC will be disabled after enabling?

posted Aug 21, 2018 by Jaganathan

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LTE: How does up-link traffic flow template work at UE side ?

posted Aug 9, 2018 by Harshita

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LTE: What is the significance of different RoHC modes such as U-Mode O-Mode and R-Mode ?

posted Jul 27, 2018 by Harshita

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While handover will PDCP SN change at target ENB?

posted Dec 6, 2017 by Jaganathan

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how the pdcp routes the different packets belongs to different services to different DRBs?

posted Jul 31, 2017 by anonymous

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Why do we have sequence number in RLC and PDCP?

posted Jul 20, 2017 by Himani

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LTE: When RLC 15-bit LI value is used in AM mode ??? Based on what condition.

posted Jun 28, 2017 by Hamesh Raja M A

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Why do we have different SN range in PDCP&RLC?

posted Jun 6, 2017 by Karan Patel

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LTE:what is the advantage and disadvantage of setting 12 bits instead of 7 bits? PDCP SN

posted May 21, 2017 by anonymous

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What is PDCP in-sequence delivery & duplicate detection at re-establishment?

posted May 17, 2017 by Bharat Kumar

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How eNodeB PDCP layer aggregates data if RLC layer sends incorrect sequence in case of LTE-Wifi Aggregation?

posted Mar 7, 2017 by Gnanendra Reddy

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If there are multiple DRB's with LWA enabled,how does the UE distinguish received data from Wifi between these bearers?

posted Feb 28, 2017 by Gnanendra Reddy

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LTE: When a PDCP entity is configured with the larger length of SN for DRBs ?

posted Nov 26, 2016 by Ganesh Kumar

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How DL data transfer algorithm works for DRBs mapped to RLC AM in PDCP ? (36.323 5.1.2.1.2)

posted Nov 25, 2016 by Shruti Pujari

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Why RLC TM data does not go through PDCP layer, any pointer on how to proceed?

posted Nov 15, 2016 by anonymous

+2 votes

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Can anyone please explain briefly PDCP re-establishment support & retransmission of PDCP SDU at handover in RLC AM mode?

posted Oct 4, 2016 by Bhagyashree R

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LTE: Due to which parameter or protocol layer, LTE puts restriction of having maximum 8 bearers per UE ?

posted Sep 17, 2016 by Harshita

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LTE: What is time based discarding at PDCP layer and why it is used ?

posted Jun 19, 2016 by Neeraj Mishra

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Why security algorithms are implemented in PDCP layer and why not in other layers like RLC/MAC/RRC ?

posted May 4, 2016 by anonymous

+6 votes

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What is concept of Loss Handover and Lossless Handover in PDCP?

posted Mar 31, 2015 by anonymous

+2 votes

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Why the value of "Last_submitted_PDCP_RX_SN" variable set to 4095 at the time of PDCP entity establishment ?

posted Mar 26, 2015 by Harshita

+3 votes

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What is FMS and BITMAP fields in PDCP status PDU?

posted Oct 24, 2014 by Vasu

+4 votes

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How does PDCP layer detect duplicate SDU receive from lower layer at the time of re-establishment?

posted Oct 13, 2014 by anonymous

+1 vote

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LTE : Data forwarding over X2ap during handover ?

posted Sep 23, 2014 by Bheemappa G

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Why RRC integrity function is in PDCP?

posted Jun 16, 2014 by anonymous

+4 votes

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Which algorithm is used by PDCP layer to compress the IP header in to Token?

posted Jun 9, 2014 by Hiteshwar Thakur

+3 votes

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Why is PDCP SDU size maximum kept as 8188 octets?

posted Dec 22, 2013 by anonymous

+2 votes

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LTE: How does integrity verification is performed by receiving PDCP entity ?

posted Dec 18, 2013 by Harshita

+1 vote

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LTE: What does mean by ROHC segmentation ?

posted Dec 18, 2013 by Harshita

+2 votes

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LTE: What type of logical channels served by PDCP entity ?

posted Dec 16, 2013 by Harshita

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LTE: In what scenarios PDCP receiver entity may receive duplicate packets from peer entity ?

posted Dec 16, 2013 by Harshita

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LTE: What value of the discard timer used for default bearer setup ?

posted Dec 16, 2013 by Harshita

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LTE: What is maxCID ?

posted Dec 14, 2013 by Harshita

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LTE: Does discard timer applicable for UM mapped DRB's or both (UM and AM) ?

posted Dec 13, 2013 by Neeraj Mishra

+4 votes

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LTE: What does mean by Timer based discard and how it works ?

posted Nov 30, 2013 by Harshita

+4 votes

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LTE: What factors derive the maximum supported size of PDCP SDU ?

posted Nov 30, 2013 by Harshita

+4 votes

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LTE: Why Last_Submitted_PDCP_RX_SN state variable is initialized to 4096 ?

posted Nov 28, 2013 by Vikram Singh

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LTE: Why User plane PDCP Data PDU has D/C bit in the packet header ?

posted Nov 28, 2013 by Harshita

+3 votes

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LTE: What is the functionality of PDCP layer ?

posted Nov 27, 2013 by Harshita