[srslte-users] measConfig IE in RRC connection reconfiguration

[Swaroop Kalyan]

Hi Roberto, 

Thank you for your email. 
But I do not see the pack() function being used in your code to pack the IE that you are adding. 
I thought pack () function is needed to pack the IE in ASN format. 
Could you please share your thoughts on this. 

Many thanks in advance 

/Swaroop 


From: "Roberto Riggio" <rriggio at fbk.eu> 
To: "Swaroop Kalyan" <swkaxa at syntronic.com> 
Cc: "srslte-users" <srslte-users at lists.softwareradiosystems.com> 
Sent: Tuesday, June 9, 2020 4:55:27 AM 
Subject: Re: [srslte-users] measConfig IE in RRC connection reconfiguration 

Hi, 
I am implementing similar features but to track rsrp and rsrw of the serving cell. You can check my code here [1], maybe it could give you some idea. The code seems to work properly and reports the measurements at the periodicity requested. However I could only test it with a Nexus 5. 

[1] [ https://github.com/5g-empower/srsLTE-20.04/blob/master/srsenb/src/stack/rrc/rrc.cc#L1894 | https://github.com/5g-empower/srsLTE-20.04/blob/master/srsenb/src/stack/rrc/rrc.cc#L1894 ] 

R. 

On Tue, Jun 9, 2020 at 10:27 AM Swaroop Kalyan < [ mailto:swkaxa at syntronic.com | swkaxa at syntronic.com ] > wrote: 



Dear users, 
I just subscribed to the user list. 


I am trying to add measConfig IE to RRC connection reconfiguration to Ue. 
The intention is to send gap offset gp0 0 ( 40 ms MG repetition period) to ue in RRC connection reconfiguration. 

I'm changing rrr.cc like below 
void rrc::ue::send_connection_reconf(srslte::unique_byte_buffer_t pdu) 

{ 

conn_reconf->meas_cfg_present = true; 
conn_reconf->meas_cfg.meas_gap_cfg_present = true; 
meas_gap_cfg_c* meas_gap_cfg = &conn_reconf->meas_cfg.meas_gap_cfg; 
meas_gap_cfg->setup(); 
meas_gap_cfg->set(); 
asn1::bit_ref bref(pdu->msg, pdu->get_tailroom()); 
meas_gap_cfg->pack(bref); 
meas_gap_cfg->set_setup().gap_offset.set(); 
meas_gap_cfg->set_setup().gap_offset.set_gp0(); 
meas_gap_cfg->set_setup().gap_offset.gp0(); 

//should I have to call pack() once again? 
meas_gap_cfg->pack(bref); 


} 

Could anyone please review my approach and suggest if I am going in right direction. 

Also, I'm not sure how can I do unit testing on this code change, could anyone please advice. 

Many thanks for your time. 

Regards 
Swaroop 

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