Variables definitions :

*LTE stands for Long-Term Evolution. It is a 4G

wireless communication standard for mobile
networks, designed to provide high-speed data and
low latency for mobile phones and data terminals.

1. Date

The date on which the data or measurements were recorded.

2. eNodeB Name

"eNodeB" stands for Evolved Node B, which is the base station in a 4G/LTE
network. The name is an identifier for the eNodeB in the operator's network.

3. Frequency Band

Refers to the specific LTE frequency range the cell is operating on (e.g., Band 3,
Band 20). Different bands have different characteristics (e.g., higher bands = faster
speed, lower bands = better coverage).

4. Cell FDD/TDD Indication

Indicates whether the LTE cell uses:

●​ FDD (Frequency Division Duplex): Uplink and downlink operate on different

frequencies simultaneously.​

●​ TDD (Time Division Duplex): Uplink and downlink share the same frequency
but alternate in time.​
5. Cell Name

The specific name or ID of the LTE cell, typically defined by the operator for tracking
and network planning purposes.

6. Downlink EARFCN

EARFCN = E-UTRA Absolute Radio Frequency Channel Number. It's a number that
uniquely identifies the downlink frequency used by this cell.

7. Downlink Bandwidth

The size of the frequency band allocated for downlink transmissions (e.g., 5 MHz, 10
MHz, 20 MHz). Affects maximum throughput capacity.

8. LocalCell Id

An identifier for the LTE cell within the eNodeB (unique within the site but may repeat
across different eNodeBs).

9. Latitude

The geographical north-south coordinate of the cell site.

10. Longitude

The geographical east-west coordinate of the cell site.

11. Integrity

Usually refers to data consistency or correctness. In some reports, it may show the
reliability or confidence level in the collected data.
13. FT_AVERAGE NB OF USERS (UEs RRC CONNECTED)

Average number of UEs (User Equipments) that are RRC (Radio Resource
Control) connected.

●​ These are devices actively communicating (not idle).​

14. FT_PHYSICAL RESOURCE BLOCKS LOAD DL(%)

Percentage of physical resource blocks used in the downlink.

●​ Shows how busy the downlink is. Higher % = more network congestion.​

15. FT_PHYSICAL RESOURCE BLOCKS LOAD UL

Same as above, but for the uplink.

●​ Indicates how much of the cell’s upload capacity is being used.​

16. FT_4G/LTE DL TRAFFIC VOLUME (GBYTES)

Total amount of download data traffic handled by the LTE cell during the
measurement period.

●​ Expressed in gigabytes (GB).

17. FT_4G/LTE DL&UL TRAFFIC VOLUME (GBYTES)

The total download and upload traffic volume combined, measured in gigabytes
(GB), over the LTE network for a given cell or sector during the reporting period.

●​ Reflects the overall data load on the network.​

18. FT_4G/LTE UL TRAFFIC VOLUME (GBYTES)

The total uplink (UL) data traffic sent from users to the network, measured in
gigabytes (GB).

●​ Important for applications where users upload data frequently (e.g., cloud
backups, social media).​

19. FT_4G/LTE AVERAGE REPORTED CQI

The average Channel Quality Indicator (CQI) reported by all connected UEs.

●​ Values usually range from 1 (poor) to 15 (excellent).​

●​ Indicates the average radio link quality, which directly impacts achievable
throughput.​

20. FT_4G/LTE PAGING DISCARD RATE

The percentage of paging messages discarded before being delivered to UEs.

●​ Paging is used to reach idle UEs.​

●​ A high discard rate may result in missed calls or delayed data connections.​

21. FT_4G/LTE RADIO DOWNLINK DELAY (ms)

The average latency (delay) in milliseconds for downlink radio transmissions from
the eNodeB to the UE.

●​ Lower values represent better responsiveness and user experience.​

22. FT_AVE 4G/LTE DL THRPUT (ALL) (KBITS/SEC)

The average total downlink throughput across all UEs in the cell, measured in
kilobits per second (kbps).

●​ Indicates the overall performance and capacity usage of the downlink.​

23. FT_AVERAGE NB OF CA UEs RRC CONNECTED (number)

The average number of Carrier Aggregation (CA) capable UEs that are in RRC
connected mode.

●​ These UEs can use multiple frequency bands simultaneously for higher
throughput.​
​

24. FT_AVERAGE NUMBER OF UE QUEUED UL

The average number of UEs whose uplink data is waiting in queue.

●​ Often caused by lack of available UL resources or interference.​

25. FT_S1 SUCCESS RATE

The success rate of establishing or maintaining the S1 interface connection

between the eNodeB and the core network (MME/S-GW).

●​ High success rate means good network reliability and signaling efficiency.​

26. FT_UL.Interference

A measure of uplink interference, often expressed as a percentage or in dB.

●​ Higher values mean more noise and signal overlap, reducing uplink
performance.​
27. Average Nb of e-RAB per UE

Average number of Evolved Radio Access Bearers (e-RABs) per connected UE.

●​ e-RABs represent active data sessions, and multiple e-RABs per user may
indicate multitasking (e.g., voice + data simultaneously).

28. Average Nb of Used PRB for SRB

Average number of PRBs used for Signaling Radio Bearers (SRBs).

●​ SRBs are used for control signaling, not user data.​

●​ Important for maintaining RRC connections and handovers.​

29. FT_AVERAGE NUMBER OF UE SCHEDULED PER ACTIVE TTI DL

(FDD) (number)

The average number of UEs scheduled for downlink (DL) transmission during each
active TTI (Transmission Time Interval) in FDD mode.

●​ Gives insight into scheduling efficiency and network resource distribution.​

30. FT_AVERAGE NUMBER OF UE SCHEDULED PER ACTIVE TTI UL

(TDD)

Same as above, but for uplink (UL) in TDD mode.

●​ Reflects how many users are transmitting data in uplink per active time slot.​

31. FT_CS FALLBACK SUCCESS RATE (4G SIDE ONLY)

Success rate of Circuit-Switched (CS) fallback to legacy networks (e.g., 3G/2G)

when voice calls cannot be handled by LTE (e.g., no VoLTE support).
 ●​ "4G Side Only" means this value is calculated before the fallback attempt
leaves LTE.​

32. FT_CS FALLBACK TO WCDMA RATIO

The proportion of CS fallback attempts that are directed specifically to WCDMA (3G)
networks.

●​ Useful to analyze how fallback strategies are balanced between 2G and 3G.​

33. FT_ERAB SETUP SUCCESS RATE

The ratio of successfully established Evolved Radio Access Bearers (e-RABs) to

total setup attempts.

●​ A core metric for assessing data session accessibility in LTE.​

34. FT_ERAB SETUP SUCCESS RATE (ALL) (%)

Same as above, expressed as a percentage, and including all types of e-RABs

(initial and additional).

●​ Helps monitor the overall ability of the network to start new data sessions.​

35. FT_ERAB SETUP SUCCESS RATE (init)

e-RAB setup success rate for initial bearers, i.e., the very first data connection
established when a UE connects to the network.

●​ Critical for ensuring a smooth start to any user session.​

36. FT_RRC SUCCESS RATE

Percentage of successful Radio Resource Control (RRC) connection setups out of
total RRC setup requests.

●​ High RRC success rate indicates reliable initial access and UE connection
stability.​

37. Nb e-RAB Setup Fail

The total number of e-RAB setup attempts that failed.

●​ Indicates how often the network was unable to create a data session for UEs.​

38. Nb HO fail to GERAN

Number of handover failures to GERAN (2G).

●​ A high number could indicate poor inter-RAT (Radio Access Technology)

mobility between LTE and 2G.​

39. Nb HO fail to UTRA FDD

Number of failed handovers to UTRA FDD (3G WCDMA) networks.

●​ Useful for assessing 4G-to-3G mobility issues.​

40. Nb initial e-RAB Setup Fail

Number of failures in setting up the initial data bearer when a UE first connects.

●​ Impacts service accessibility for new users.​

41. Nb initial e-RAB Setup Succ

Number of successful initial e-RAB setups.

●​ A high number reflects proper session initiation capability.​

42. Nb initial e-RAB Success rate (%)

Success rate for initial e-RAB setup, calculated as:​

Success / (Success + Fail) * 100.

●​ High rates mean UEs are successfully starting sessions without retries or
fallback.​

43. Nb of HO over S1 for e-RAB Fail

Number of handover failures over the S1 interface (between eNodeB and core
network) where the e-RAB setup failed.

●​ Often reflects issues with inter-eNodeB or inter-region mobility.​

44. Nb of HO over S1 for e-RAB Req

Number of handover requests over S1 that required e-RAB setup.

●​ Indicates how many users moved between regions/sites, triggering data

session continuation.​

45. Nb of HO over S1 for e-RAB Succ

Number of successful handover completions over S1 where the e-RAB was

maintained.

●​ Reflects effective session continuity across eNodeBs not connected by X2.​

46. Nb of HO over X2 for e-RAB Fail

Number of failed handover attempts over the X2 interface (direct link between
neighboring eNodeBs), with e-RAB setup failure.

●​ High values may signal problems in intra-LTE mobility at the radio or

transport layer.

47. Nb of HO over X2 for e-RAB Succ

Number of successful handovers between LTE eNodeBs over the X2 interface,

where the e-RAB session was preserved.

●​ Reflects efficient intra-LTE mobility without involving the core network.​

48. Nb of RRC connection release

Total number of RRC (Radio Resource Control) connections that were released,
either normally (e.g., end of session) or abnormally (e.g., drop).

●​ A mix of normal user disconnections and network-driven releases.​

49. Nb S1 Add e-RAB Setup fail

Number of failures while trying to add additional e-RABs over the S1 interface
after the initial bearer is already active.

●​ Indicates issues with resource allocation or signaling between eNodeB and

the core.​

50. RRC Emergency SR

The number of RRC Service Requests initiated for emergency services.

 ●​ Shows how often the network is handling high-priority calls like emergency
(e.g., 112, 911).​

51. RRC High Priority SR (%)

The percentage of RRC service requests marked as high priority, including

emergency or special access classes (like VIP or critical services).

●​ Useful for analyzing how much of the traffic is mission-critical.​

52. RRC MOC SR (%)

The success rate of RRC connections initiated for Mobile Originated Calls (MOC)
– i.e., calls made by users.

●​ Expressed as a percentage of successful RRC setups for outgoing voice

sessions.​

53. RRC MTC SR (%)

The success rate of RRC setups for Mobile Terminated Calls (MTC) – i.e., calls
received by users.

●​ A key KPI for ensuring incoming call accessibility.​

54. RRC Succ rate (%)

Overall success rate for RRC connection setups, across all service types (data,
voice, emergency).

●​ High values mean users can consistently access the LTE network when
needed.​
55. CSFB failure rate (%)

The percentage of Circuit-Switched Fallback (CSFB) attempts that failed.

●​ CSFB is used when LTE users need to fall back to 3G/2G to make a voice
call.​

●​ High failure rates can lead to dropped or inaccessible calls.​

56. E-RAB Resource Congestion Rate (%)

Percentage of time the network was unable to allocate radio or transport

resources for e-RABs due to congestion.

●​ Directly impacts the user’s ability to start or maintain data sessions.​

57. RRC Resource Congestion Rate (%)

Percentage of RRC connection requests denied due to lack of resources, such as

control channel capacity or signaling congestion.

●​ High rates suggest network overload or dimensioning issues.​

58. AVE 4G/LTE UL USER THRPUT without Last TTI (Kbps)

The average uplink throughput per user, excluding the last TTI (to remove skew
from abrupt session endings), measured in kilobits per second.

●​ Represents true average UL speed per user, reflecting real upload

experience.