id stringlengths 10 13 | Statement stringlengths 30 298 | Answer stringlengths 3 980 | verdict_reason stringlengths 57 253 |
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standard_183 | What is the enhancement described in the use case "Paging policy differentiation based on application characteristics"? | The enhancement allows the paging policy to be differentiated based on the application characteristics known to and trusted by the serving network. The network can identify the traffic's application characteristics and differentiate the paging policies accordingly. | Answer accurately describes the enhancement as paging policy differentiation based on application characteristics, is clear, specific, and factual. |
standard_767 | How many neighboring cells should be included in the measResultNeighCells field of the VarConnEstFailReport, and what should be included for each neighboring cell? | At most, 6 intra-frequency and 3 inter-frequency neighbors per frequency and 3 inter-RAT neighbors per frequency/set of frequencies (GERAN) per RAT should be included in measResultNeighCells. For each neighboring cell, the latest results of the available measurements as used for cell reselection evaluation, which are p... | Answer accurately specifies the maximum counts for intra-frequency, inter-frequency, and inter-RAT neighbors per frequency/set, and correctly describes the required measurement results per neighbor, referencing the relevant standard (TS 36.133). |
standard_2314 | In which scenarios can the RAN send ANBR recommending UE transmission at an uplink bitrate R1 greater than the current rate R0? | The RAN can send ANBR recommending UE transmission at an uplink bitrate R1 greater than the current rate R0 in the case of GBR bearer/GFBR flow and assuming GBR/GFBR < recommended bitrate < MBR/GFBR, or in the case of non-GBR bearer/non-GFBR flow. | Answer accurately describes ANBR usage for GBR/GFBR and non-GBR/non-GFBR flows per 3GPP TS 38.300/TS 38.413. |
standard_1205 | What is the maximum number of diversions permitted for each communication in the CD service and Communication Forwarding (CF) services? | The maximum number of diversions permitted for each communication is a network provider option for the CD service and a service provider option for the CF services. The service provider or network provider defines the upper limit of diversions, and when counting the number of diversions, all types of diversion are incl... | Answer accurately explains that maximum diversions are provider-defined for CD and CF services, includes all diversion types, and is clear and factual. |
standard_1820 | What is the purpose of the pre-established session between the MCPTT UE and the MCPTT server? | The pre-established session between the MCPTT UE and the MCPTT server is used to maintain the connection between the two, and it can be modified or removed by using the SIP procedures for session modification and terminating a SIP session. | Answer accurately describes the purpose of maintaining connection and references correct SIP procedures for modification/termination, aligning with 3GPP MCPTT standards. |
standard_558 | What does the abbreviation "IAB" stand for in the context of NR Integrated access and backhaul? | Integrated Access and Backhaul | Answer is accurate, clear, and matches the standard NR terminology. |
standard_1772 | What is the focus of the Enhanced Performance Requirements Type A - Single-layer Spatial Multiplexing with TM9 interference model (User-Specific Reference Symbols) test? | The focus of this test is to verify closed loop rank one performance on one of the antenna ports 7 or 8 without a simultaneous transmission on the other antenna port in the serving cell when the PDSCH transmission in the serving cell is interfered by PDSCH of one dominant interfering cell applying transmission mode 9 i... | Answer precisely matches 3GPP TS 36.143 test case focus, is clear, specific, and factual. |
standard_1901 | What is the purpose of the "Register" message in the context of 3GPP technical specifications? | The "Register" message is used to assign a new transaction identifier for call independent supplementary service control and to request or acknowledge a supplementary service. | Answer accurately describes the purpose of the Register message in 3GPP for supplementary service control, aligning with specifications like TS 24.080. |
standard_2302 | How does the NWDAF containing AnLF use the rate of untrusted AF data sources? | The NWDAF containing AnLF may use the rate of untrusted AF data sources as a criterion to calculate the confidence level of the respective analytics output. | Answer is accurate, specific to NWDAF/AnLF function, and aligns with 3GPP standards on analytics confidence. |
standard_1306 | What are the main functions of the RLC/MAC layer in the GPRS radio interface? | The RLC/MAC layer provides services for information transfer over the physical layer in the GPRS radio interface. It includes backward error correction procedures enabled by the selective retransmission of erroneous blocks and arbitrates access to the shared medium between multiple MSs and the Network. | Answer accurately describes RLC/MAC functions: data transfer, error correction via selective retransmission, and medium access arbitration, matching GPRS specifications. |
standard_2599 | What condition triggers the SS to terminate the dialogue in Option 3 of the test procedure? | The SS terminates the dialogue when the user ignores the location request by taking no action, allowing the verification process timer to time-out. | Answer is clear, specific, and factually consistent with typical telecom procedures for location request time-outs. |
standard_907 | What action should the RNC take when it receives a RESET RESOURCE message from the CN, indicating that the CN is releasing resources and references associated with the Iu signalling connection identifiers in the received message? | The RNC should release locally the resources and references associated to the Iu signalling connection identifiers indicated in the received message, and should return a RESET RESOURCE ACKNOWLEDGE message to the CN after all Iu-related resources and references have been released. | Answer accurately describes the RNC's required actions per 3GPP specifications for Iu interface reset procedure, is clear, specific, and factual. |
standard_482 | What does the UE occupied bandwidth refer to in 6.5G.1.3? | The UE occupied bandwidth is defined as the bandwidth containing 99 % of the total integrated mean power of the transmitted spectrum on the assigned channel at each transmit antenna connector. | Answer accurately defines UE occupied bandwidth per 3GPP standards, is clear, specific, and factual. |
standard_528 | What networks can be used for connectivity between the UAV and the USS/UTM? | A dedicated APN is used for UAV connectivity to USS/UTM in EPC, and may also be used for UAV3/UAV5 connectivity. In 5GS, connectivity is established via the UFES to the USS/UTM. | Answer accurately distinguishes between EPC and 5GS connectivity methods, using correct technical terms (APN, UFES) without ambiguity or hallucination. |
standard_1593 | What are the general requirements specified for the Service Enabler Architecture Layer (SEAL)? | The general requirements for SEAL specified in the Technical Specification include: supporting applications from one or more verticals, offering SEAL services as APIs to vertical applications, supporting notification mechanisms, and ensuring the API interactions between the vertical application server(s) and SEAL serve... | Answer accurately lists key SEAL requirements from 3GPP TS 23.434, including vertical support, API exposure, notifications, and CAPIF conformance, with clear and factual details. |
standard_1235 | What is the purpose of the limits on spurious emissions in the document, and when do they become mandatory? | The limits on spurious emissions in the document are used for the protection of systems operating in frequency ranges other than the BS downlink operating band. They become mandatory when set by local or regional regulation for an operating band or specific systems. | Answer accurately explains purpose (protection of other systems) and condition for mandatory application (local/regional regulation), matching typical telecom standards. |
standard_860 | What is the role of the Information Model in the Network Resource Model (NRM)? | The Information Model in the Network Resource Model (NRM) defines the semantics and behavior of information object class attributes and relations in a protocol and technology neutral way. | Answer accurately describes the role of the Information Model in NRM as defining semantics and behavior in a protocol-neutral manner, aligning with telecom standards. |
standard_2292 | What is the responsibility of the NSP OSS SML in this possible solution? | The NSP OSS SML receives the service order request from the NSP BSS, analyzes the NSC requirements for network slice management capabilities exposure, captures them in the form of NSC-specific access control data, and sends a service order response to the BSS. | Answer is clear, specific, and factually describes the NSP OSS SML's responsibilities in the solution context. |
standard_1379 | How is a deliveryMethod element related to a Session Description fragment in MBMS? | Each deliveryMethod instance in an instance of the userServiceDescription element must refer to one Session Description fragment. | Answer is accurate, clear, specific, and factually aligns with MBMS standards. |
standard_1711 | What happens if no packets were detected for the duration of the Summary Timer in the EPS bearer packet flow? | The Packet Data Summary Report shall not be sent. | Answer accurately reflects that no packet detection during the Summary Timer results in no report being sent, aligning with 3GPP TS 32.423 specifications. |
standard_110 | What does the 3GPP Technical Specification define in relation to Unstructured Supplementary Service Data (USSD)? | The 3GPP Technical Specification defines the requirements for handling USSD at the MS and network entities. It does not include specification of particular applications, nor does it specify how a particular application is selected. | Answer accurately reflects 3GPP TS 22.090 scope, stating USSD handling requirements without application specifics, matching the statement's focus. |
standard_832 | What are the guidelines for constructing the profile schema in 3GPP GUP? | The guidelines emphasize on modularity, extensibility, readability, easy support for versioning, and isolation of the schema components. | Answer accurately lists key 3GPP GUP profile schema guidelines (modularity, extensibility, readability, versioning support, isolation) as per standards, is clear and factual. |
standard_970 | What is the purpose of "Index of selected SCCPCH" in 3GPP TS 25.321? | The "Index of selected SCCPCH" identifies the selected SCCPCH with the PCH and the uniquely associated PICH to be used by the UE in 3GPP TS 25.321. It is selected based on "Initial UE Identity" as follows: "Index of selected SCCPCH" = "Initial UE Identity" mod K. | Answer accurately describes the purpose and selection method of the index as per 3GPP TS 25.321, with clear technical detail. |
standard_503 | What is the purpose of the detailed improvement analysis stage in the NM centralized SON function like CCO? | The purpose of the detailed improvement analysis stage is to do a more fine-grained assessment of the improvement possibility and its localization, which is done by using a fine-grained detection function/tool such as MDT with periodic measurements. | Answer accurately describes the detailed improvement analysis stage in centralized SON (CCO) as fine-grained assessment using tools like MDT, aligning with telecom standards. |
standard_228 | What is the definition of sensitivity RoAoA in the context of satellite communication? | Sensitivity RoAoA is the sensitivity Region of Arbitrary Angle of Arrival (RoAoA) within the OTA sensitivity directions declaration. It is the region within which the declared EIS(s) of an OSDD is intended to be achieved at any instance of time for a specific SAN direction setting. | Answer is precise, matches telecom terminology, and clearly defines RoAoA in satellite communication context. |
standard_1683 | What is one of the potential new requirements for 5G system to support secure clock signals to devices and application servers in a reliable manner? | The 5G system shall support a mechanism to verify authorization of a 3rd party application server to use a 5G timing resiliency service is one of the potential new requirements for 5G system to support secure clock signals to devices and application servers in a reliable manner. | Answer is specific, factual, and directly addresses the requirement for secure clock signals with authorization verification. |
standard_1746 | What is the meaning of "5G ProSe Direct Discovery" in the context of 3GPP technical specifications? | In 3GPP technical specifications, "5G ProSe Direct Discovery" refers to a function employed by a 5G ProSe-enabled UE to discover other 5G ProSe-enabled UEs in its vicinity based on direct radio transmissions between the two UEs with NR technology. | Answer accurately defines 5G ProSe Direct Discovery per 3GPP specs, is clear, specific, and factual. |
standard_1835 | What is the difference between the first digit's values in the version number of the 3GPP documents? | The first digit's value represents the stage of the document in the 3GPP standardization process. A version number with 'x' as the first digit is presented to the TSG for information, 'y' as the first digit is presented to the TSG for approval, and 'z' as the first digit is a TSG approved document under change control. | Answer accurately explains the meaning of the first digit in 3GPP version numbers, is clear, specific, and factual. |
standard_1545 | What is the purpose of Concurrent Features Activation with Bi-control (CFA-BC) in B-ISDN? | CFA-BC enables a call to be influenced by some features at two different points concurrently, with a pre-defined set of features controlled by its context with bi-control relationship. | Answer accurately describes CFA-BC's purpose in B-ISDN, focusing on concurrent feature activation and bi-control relationships, with clear and specific technical detail. |
standard_393 | What is the purpose of aligning channel model clusters with probe locations in an optimized chamber design? | The purpose of aligning channel model clusters with probe locations in an optimized chamber design is to emulate clusters from arbitrary angles if desired and to obtain a more precise Angle Spread for test signals. | Answer accurately explains alignment purpose for emulating clusters and improving Angle Spread precision, matching telecom OTA testing principles. |
standard_798 | What is the MC service server's role when switching from MBMS delivery to unicast delivery? | The MC service server decides to send the downlink data by unicast delivery instead of MBMS delivery to the MC service client when the MC application detects bad MBMS bearer condition through the MC MBMS API. | Answer accurately describes the MC service server's decision-making role in switching from MBMS to unicast based on bearer conditions, aligning with 3GPP specifications. |
standard_767 | What is the priority order for cell reselection when multiple RAT/frequency cells fulfill the cell reselection criteria? | Cell reselection to a higher priority RAT/frequency shall take precedence over a lower priority RAT/frequency if multiple cells of different priorities fulfill the cell reselection criteria. | Answer accurately states that higher priority RAT/frequency takes precedence, aligning with 3GPP specifications for cell reselection. |
standard_2440 | What must the MME include in the SECURITY MODE COMMAND message when it modifies the current EPS security context or takes a non-current native EPS security context into use? | The eKSI of the EPS security context to be modified and a new set of selected NAS security algorithms | Answer accurately specifies required elements: eKSI and new NAS security algorithms, aligning with 3GPP TS 24.301. |
standard_1322 | What is the default priority assigned to a location service request if the LCS Priority parameter is absent in a BSSMAP-LE Perform Location request? | If the LCS Priority parameter is absent in a BSSMAP-LE Perform Location request, the lowest priority shall be assumed. | Answer is accurate, specific, and aligns with telecom standards for default handling of missing LCS Priority. |
standard_1457 | What is the purpose of the Hosted SEPP providers using their own unique credentials for authentication? | The Hosted SEPP providers must use their own unique credentials for authentication to enable operators that receive signaling from a Hosted SEPP provider to verify that the Hosted SEPP provider has been authorized by the roaming partner. This helps to ensure the security and integrity of communication between different... | Answer accurately explains the purpose of unique credentials for authentication in Hosted SEPP, focusing on authorization verification and security between PLMNs, with clear and factual telecom-specific details. |
standard_913 | What is the focus of the enhanced FR2 HST requirements in 3GPP TS 38.854 v0.4.0? | The enhanced FR2 HST requirements in 3GPP TS 38.854 v0.4.0 focus on cell re-selection, RRC connection mobility control, gradual timing adjustment, SSB based radio link monitoring and beam failure detection, intra-frequency measurement, and L1-RSRP/SINR measurement for specific scenarios. Additionally, it specifies the ... | Answer accurately details specific technical requirements from the referenced 3GPP document, demonstrating clarity, specificity, and factual correctness without hallucination. |
standard_1926 | What is the purpose of the test procedure outlined in 9.3.1C.4.2? | The purpose of the test procedure outlined in 9.3.1C.4.2 is to verify that the reporting accuracy of the channel quality indicator (CQI) under AWGN (additive white Gaussian noise) propagation conditions with periodically varying radio conditions is within the specified limits. | Answer is specific, factual, and aligns with typical telecom testing standards for CQI reporting accuracy under defined conditions. |
standard_471 | Which method supports the creation of an Individual Application Session Context? | The POST method in 5.3.2.3.1 supports the creation of an Individual Application Session Context. | Answer is precise, references specific standard section, and is factually accurate. |
standard_1964 | What are the four requirements specified for the flexible layer one in the context of IMS services? | The four requirements specified for the flexible layer one in the context of IMS services are: (1) to fulfill most of the IMS requirements in terms of radio bearer service attributes, (2) to support the multiplexing of parallel flows onto a basic physical subchannel, (3) to provide an optimisation of spectral efficienc... | Answer is accurate, detailed, and aligns with technical specifications for flexible layer one in IMS. |
standard_2536 | What should the receiving side of an AM RLC entity do if it receives an AMD PDU with a sequence number (SN) outside of the receiving window? | The receiving side should discard the received AMD PDU. | Answer is accurate: AMD PDUs with SN outside the receiving window are discarded per 3GPP TS 36.322. |
standard_675 | What should the UE remove from the "equivalent PLMNs" list before it is stored in the mobile station? | Any PLMN code that is already in the "forbidden PLMN list" shall be removed from the "equivalent PLMNs" list before it is stored by the mobile station. | Answer is accurate, specific, and aligns with 3GPP TS 24.008 procedures for PLMN selection. |
standard_240 | What is the purpose of the IMS Voice Over PS Sessions Support Indicator? | The IMS Voice Over PS Sessions Support Indicator indicates whether IMS Voice Over PS Sessions is supported at the UE's current routing area. | Answer is accurate, clear, and specific to the indicator's purpose in telecom. |
standard_1116 | What should the SME do in the case where all automatic attempts fail in sending an SMS-SUBMIT? | If all automatic attempts fail, the user shall be informed and the failed message should be stored in the mobile in such a way that the user can request a retransmission using the same TP-MR value, without the need to re-enter any information. | Answer is clear, specific, and aligns with standard telecom procedures for handling SMS-SUBMIT failures, including user notification, storage, and retransmission with TP-MR. |
standard_2224 | What is the purpose of the propagation condition "Case 2" in the UTRA simulations? | The purpose of the propagation condition "Case 2" in the UTRA simulations is to test the receiver under high delay spread conditions, ensuring efficient support of repeaters and not exceeding reasonable complexity or performance impact on the receiver. | Answer is accurate, specific, and aligns with known UTRA simulation propagation conditions for testing receiver performance under high delay spread. |
standard_2196 | What is the purpose of Common access class control in the network? | Common access class control allows the network to restrict access for certain groups of mobile stations, also known as access classes, for access to both domains or to one domain only. | Answer accurately describes common access class control as a network mechanism for restricting mobile station access by class, with clear and factual detail. |
standard_2222 | What is an Integration Reference Point (IRP) in the context of 3GPP Technical Specification Group Services and System Aspects? | An IRP is a reference point that defines the interface between two functional entities in the 3GPP network, allowing them to interact and exchange information based on a common information model. | Answer accurately defines IRP as a reference point for interfaces between functional entities with a common information model, aligning with 3GPP TSG-SA specifications. |
standard_1309 | Under what circumstances should the UE insert a public GRUU value in the Contact header field? | The UE should insert the public GRUU value in the Contact header field if a public GRUU value has been saved associated with the public user identity from the P-Called-Party-ID header field, and the UE does not indicate privacy of the P-Asserted-Identity. | Answer accurately reflects IMS standards for GRUU usage, is clear, specific, and factual. |
standard_1353 | In the context of an MCPTT emergency group call, what indication should the MCPTT client display if the <emergency-ind> element is set to "true" in the SIP INVITE request? | The MCPTT client should display an indication that this is an MCPTT emergency group call, the MCPTT ID of the originator, the MCPTT group identity, and if the <alert-ind> element is set to "true", an MCPTT emergency alert and associated information. | Answer accurately reflects 3GPP TS 24.379 specifications for MCPTT emergency group call indications, including required elements and conditional alert information. |
standard_1364 | What is the objective of the 3rd Generation Partnership Project's LTE 450 MHz in Brazil work item? | The objective is to specify technical requirements for deploying LTE operation in the 450 MHz band in Brazil. | Answer is accurate, specific, and aligns with known 3GPP work on LTE in the 450 MHz band for Brazil. |
standard_262 | What must be taken into account regarding UE support of RAT 1 in Inter-RAT energy saving concepts? | It must be considered that if a UE does not support RAT 1, energy saving measures of RAT 2 may result in a loss of service for that UE. | Answer correctly identifies the key consideration for UE lacking RAT 1 support in Inter-RAT energy saving, focusing on service impact from RAT 2 measures, which is specific and factual. |
standard_1736 | How can the media key be retrieved for lawful interception purposes? | The media key can be retrieved from the KMS based on the identities of calling parties. If the terminal is roaming, the KMS in the visited network or the home network can be contacted to retrieve the media key. | Answer is factually accurate, clear, specific to lawful interception context, and correctly describes retrieval from KMS based on identities and roaming scenarios. |
standard_2670 | What does the abortMultipleCalls() method indicate to the application? | It indicates that a number of ongoing call sessions have aborted or terminated abnormally. | Answer is accurate, clear, and specific to the method's purpose in telecom signaling. |
standard_1092 | In what ways can Handover Optimization based on UE Load benefit the target eNB? | Handover Optimization based on UE Load can benefit the target eNB by providing knowledge about the projected UE load, including additional radio and virtual resources. This information can help the target eNB manage its resources more efficiently and handle handover requests more effectively, leading to improved networ... | Answer accurately explains benefits of UE Load-based Handover Optimization to target eNB, including load projection and resource management, with clear and factual telecom terminology. |
standard_1234 | What does the measurement "DL total available PRB" represent in the context of 5G? | The "DL total available PRB" measurement provides the total number of physical resource blocks (PRBs) available for downlink transmission in 5G. | Answer is accurate, clear, specific, and factually correct regarding 5G terminology. |
standard_2468 | In a FDD system, when will the Node B activate the inner loop DL power control for all RLs? | The Node B shall activate the inner loop DL power control for all RLs, if the received Inner Loop DL PC Status IE is set to "Active" in the RADIO LINK SETUP REQUEST message. | Answer is accurate, specific to 3GPP FDD procedures, and cites the correct signaling message and IE. |
standard_1502 | When should the UE populate the P-Access-Network-Info header field within a dialog? | During the dialog, the UE should populate the P-Access-Network-Info header field in any request or response within a dialog with the current point of attachment to the IP-CAN (e.g. the current cell information). | Answer accurately describes UE behavior for P-Access-Network-Info header in SIP dialogs, specifying timing and content per 3GPP standards. |
standard_2411 | What is the effect of the Implicit De-registration timer expiring before the UE contacts the network? | If the Implicit De-registration timer expires before the UE contacts the network, the AMF implicitly de-registers the UE. | Answer is accurate, clear, and specific to 5G core network procedures. |
standard_336 | What is the difference between UUAA-MM and UUAA-SM in 5G System? | UUAA-MM is performed at 5GS registration based on operator's policy and it is used to authenticate and authorize a UAV when registering with 5GS. Whereas UUAA-SM is performed at PDU session establishment and it is used to re-authenticate the UAV or to reauthorize at PDU session modification or EPS bearer modification i... | Answer accurately distinguishes UUAA-MM and UUAA-SM in 5G, specifying contexts (registration vs. PDU session), purposes, and conditions, with clear technical detail. |
standard_2213 | What should the MCX Service do if there is an imminent peril group communication? | The MCX Service shall be capable of requesting increased priority for all Participants of an Imminent Peril group communication, maintain knowledge of the Affiliated MCX Service Group Member(s) that initiated the Imminent Peril group communication, and maintain an In-progress Imminent Peril condition from the time the ... | Answer accurately reflects MCX service requirements for imminent peril group communications, is clear, specific, and factual. |
standard_903 | What is the aim of the present document (Technical Report in 3GPP's 3rd Generation Partnership Project) in supporting maritime communication services? | The present document aims to support maritime communication services between users ashore and at sea or between vessels at sea over the 3GPP system, targeting improved maritime safety, protection of the maritime environment, and promotion of shipping efficiency. Ultimately, it aims to narrow the information gap between... | Answer is accurate, specific, factual, and aligns with 3GPP technical report objectives for maritime communications. |
standard_482 | What is the purpose of sending uplink power control commands to the UE? | The purpose is to ensure that the UE output power at each antenna connector measured by the test system is within the Uplink power control window. | Answer is accurate, specific, and aligns with telecom standards for uplink power control. |
standard_946 | What is the role of the IRI-POI function in the 3GPP system? | The IRI-POI function is responsible for providing intercept capabilities in the 3GPP system. | Answer accurately identifies IRI-POI's role in lawful interception within 3GPP standards, is clear and factual. |
standard_2196 | What type of message is sent when the MS performs a combined GPRS attach and no valid TMSI is available? | The TMSI status information element (9.4.1.3) is included in the ATTACH REQUEST message when the MS performs a combined GPRS attach and no valid TMSI is available. | Answer correctly identifies the ATTACH REQUEST message and the TMSI status IE inclusion per 3GPP TS 24.008, with precise reference. |
standard_1818 | What is the purpose of hardening requirements in the described security problem definition? | Hardening requirements aim to reduce the attack surface and security vulnerability of the network product, ensuring that security functions cannot be bypassed and unneeded or insecure functionality is removed. | Answer accurately defines hardening requirements as reducing attack surface, preventing bypass, and removing insecure functionality, aligning with standard telecom security practices. |
standard_1598 | What should the PGW-C do when it receives a GTP error indication from a SGW-U for the default bearer? | The PGW-C shall delete all the Bearer contexts associated with the PDN connection with a delete session message to SGW-C and may notify the Operation and Maintenance network element. | Answer accurately describes PGW-C actions per 3GPP TS 29.244 for GTP error indication on default bearer, including context deletion and optional O&M notification. |
standard_890 | What are the potential security requirements related to "Security aspects of Data Channel usage in IMS network"? | The potential security requirements are: (1) communication over IMS data channel shall be confidentiality, integrity and replay protected, (2) the peers over IMS data channel shall be mutually authenticated, and (3) the path between IMS-AGW and external data server shall be confidentiality, integrity and replay protect... | Answer is accurate, specific, and aligns with IMS security standards for data channels, covering confidentiality, integrity, replay protection, mutual authentication, and path security. |
standard_1037 | What is the purpose of the "Spare extension" field in the error handling procedure? | The "Spare extension" field is included in the error handling procedure to allow for the addition of new fields or information in later versions of the document, without being interpreted by the receiver in the current version of the document. | Answer accurately explains the purpose of a spare extension field for future compatibility and non-interpretation in current versions, which is clear, specific, and factual. |
standard_2536 | In what circumstances should the UE abort the registration procedure for initial registration and re-initiate it immediately when changing into a new tracking area? | When the UE changes into a new tracking area before receiving the REGISTRATION ACCEPT message. | Answer accurately reflects 3GPP TS 24.501: UE aborts registration if tracking area changes before REGISTRATION ACCEPT and re-initiates immediately. |
standard_2146 | What is the format of the Operator Identifier based N3IWF FQDN? | "n3iwf.5gc.mnc<MNC>.mcc<MCC>.pub.3gppnetwork.org" | Answer matches 3GPP TS 23.003 format for N3IWF FQDN using operator identifier (MCC, MNC). |
standard_900 | How are minimum requirements determined for the purposes of testing? | The minimum requirements given in this specification make no allowance for measurement uncertainty. The test specifications define test tolerances, which are used to relax the minimum requirements in this specification to create test requirements. | Answer clearly explains that minimum requirements are strict, test tolerances account for uncertainty, and test requirements are derived by relaxing minimums with tolerances. |
standard_293 | What must the PCRF do in order to assure accurate reporting for uplink traffic if the TDF performs enforcement actions after the traffic passes through the PCEF? | The PCRF must provide all sdf templates which are part of active PCC Rules to the TDF, with an indication of their precedence following the precedence of the corresponding PCC Rules they belong to. The TDF must then perform the comparison of the sdf templates and the detected application's traffic in the same order as ... | Answer accurately describes PCRF's role in providing SDF templates with precedence to TDF for correct uplink traffic reporting, aligning with 3GPP standards. |
standard_685 | What actions are taken in a successful Write-Replace procedure? | In a successful Write-Replace procedure, the CN initiates the process by sending a WRITE-REPLACE message to the RNC, which then broadcasts a new message or replaces an existing one as requested in the Service Areas List IE. The RNC uniquely identifies the CBS message using the Message Identifier IE and the leftmost bit... | Answer accurately describes the Write-Replace procedure steps, including CN initiation, RNC actions, and specific IEs used for identification, with clear and factual telecom terminology. |
standard_270 | What is the range of values for the I bit in the ISDN access indicator? | The I bit in the ISDN access indicator can have a value of either 0 or 1, where 0 indicates an originating access non-ISDN and 1 indicates an originating access ISDN. | Answer is accurate, clear, specific, and matches standard ISDN definitions. |
standard_767 | What is the V2X Control Function's role in handling authorization for V2X communications over PC5 reference point? | The V2X Control Function in the HPLMN requests authorization information from the V2X Control Function of the serving PLMN, merges authorization information from home and serving PLMNs, and informs the UE of the final authorization information. It may revoke authorization at any time and notifies the V2X Control Functi... | Answer accurately describes V2X Control Function's authorization role per 3GPP specs, including HPLMN/VPLMN interaction, merging, revocation, and notification. |
standard_315 | What action should a receiving entity take when it receives a message with a syntactically incorrect conditional information element that is not required to be present or absent in the message? | The receiving entity should ignore that information element and treat the rest of the message. | Answer correctly states to ignore the syntactically incorrect conditional IE and process the rest, aligning with standard telecom protocol handling. |
standard_1335 | What should the SMF do if it determines that the DL NAS TRANSPORT message carrying the PDU SESSION MODIFICATION COMMAND message was not forwarded by the 5G access network due to a cause other than handover procedure in progress? | The SMF shall reject the UE-requested PDU session modification procedure with an appropriate 5GSM cause value in the PDU SESSION MODIFICATION REJECT message. | Answer accurately references 3GPP TS 24.501 procedure for SMF handling of undelivered DL NAS TRANSPORT, is clear and specific. |
standard_2298 | What is the role of the "source BSS" in the PS handover preparation phase? | The source BSS is responsible for requesting a PS handover for an MS with one or more PFCs subject to handover, and signalling radio resources and system information to the MS before it moves to the target cell. The source BSS also ensures that the target BSS/GANC reserves necessary resources for the active PFCs in the... | Answer accurately describes the source BSS's role in PS handover preparation, including request initiation, resource signaling, and coordination with target network, with clear and specific technical details. |
standard_1662 | What is the role of "Adjusted Segment Availability Start Time" (ASAST) for a Segment? | ASAST is used to determine the exact availability time of a Segment for a Representation, which can be derived from the MPD using the Segment availability start time minus the Segment duration announced in the MPD. The ASAST is used to calculate the start time of each Segment within a Represention, considering any offs... | Answer accurately defines ASAST's role in determining segment availability time, referencing MPD derivation and offsets, with clear and factual details. |
standard_286 | What is the role of the Session Management Function (SMF) in the MBS service context? | The Session Management Function (SMF) may receive the UE's MBS context message from the AMF, classify UEs into different MBS service groups, and associate each group with a QoS profile. | Answer accurately describes SMF's role in MBS context, including UE context handling, group classification, and QoS association, aligning with 3GPP standards. |
standard_767 | What information does the UE set when it receives the S-TMSI from upper layers in 3GPP TS 24.301, clause 5.6.1.3.3? | The UE sets the ue-Identity to the value received from upper layers. | Answer accurately references clause 5.6.1.3.3 in TS 24.301, stating UE sets ue-Identity from upper layers, which matches the standard's specification. |
standard_2689 | What audio-related information should be included in the SDP payload when the ICS UE proposes an audio stream over a circuit-switched bearer? | The ICS UE should include a "c=" line with the nettype portion set to "PSTN", a CS media "m=" line with the media portion set to "audio", and a=setup attribute set to "active". Additionally, it should add an a=cs-correlation attribute with the MSISDN of the ICS UE in the CS domain, in international E.164 number format. | Answer accurately specifies required SDP elements (c=, m=, a=setup, a=cs-correlation) per 3GPP TS 24.292 for ICS audio over CS bearer, with correct formats and attributes. |
standard_1150 | In Intermodulation response rejection testing, what measure is used to test the receiver's capability to receive a wanted signal on its assigned channel frequency in the presence of two or more interfering signals? | Intermodulation response rejection is a measure of the capability of a receiver to receive a desired signal on the assigned channel frequency in the presence of two or more interfering signals that have a specific frequency relationship to the wanted signal. | Answer accurately defines intermodulation response rejection, matches the statement's query, and is clear, specific, and factual. |
standard_1724 | How does a functional entity indicate support of a specific CAMEL phase 4 CSI? | To indicate support of a specific CAMEL phase 4 CSI, a functional entity shall have the ability to trigger on any initial service event possible for that CSI. For example, if a functional entity supports the CAMEL phase 4 O-CSI, it shall indicate this in its registration request to the HLR. | Answer accurately describes CAMEL phase 4 CSI support indication via registration and triggering, with a clear example. |
standard_446 | How are SRTP/SRTCP master keys derived in the group keying mechanism? | The GMK is used as the MIKEY Traffic Generating Key (TGK), and the GUK-ID is used as the MIKEY CSB ID. This results in a unique keystream for MCPTT Group communications. The keystream for MCPTT group communications differs across MCPTT groups, and where GUK-IDs differ, the SRTP Master Key and Master Salt will also diff... | Answer accurately describes SRTP/SRTCP master key derivation in group keying, referencing MIKEY, GMK, GUK-ID, and MKI with specific technical details, no hallucination. |
standard_2666 | What does the 3GPP Technical Specification Group produce in terms of mobile networks? | The 3GPP Technical Specification Group produces technical specifications for 3GPP (Third Generation Partnership Project) systems, including UTRAN, E-UTRAN, and Iu mode GERAN. | Answer accurately describes 3GPP TSG's role in producing technical specifications for mobile network systems, with specific examples. |
standard_700 | What should the IWF performing the participating role include in the SIP re-INVITE request when upgrading the MCPTT group session to an MCPTT emergency call? | If upgrading the MCPTT group session to an MCPTT emergency call, the IWF performing the participating role shall include an application/vnd.3gpp.mcptt-info+xml MIME body populated as specified in subclause~106.2.8.1.1 and a Resource-Priority header field, and comply with the procedures in subclause~106.2.8.1.2. | Answer is precise, references specific technical standards (3GPP MIME body and subclauses), and matches expected procedural detail for the scenario. |
standard_1760 | What is the Content-Format value that should be set in the MSGin5G procedure for indicating application/json format in the CoAP payload? | The Content-Format value that should be set in the MSGin5G procedure for indicating application/json format in the CoAP payload is 50. | Content-Format 50 is the correct IANA-assigned value for application/json in CoAP. |
standard_675 | When is the U-RNTI included as a MAC-c header to the MAC-d PDU for DCCH with the common H-RNTI in FDD and 1.28 Mcps TDD? | The U-RNTI is only included as a MAC-c header to the MAC-d PDU for DCCH (SRB#1) when using common H-RNTI in CELL_FACH state in FDD and 1.28 Mcps TDD. | Answer accurately specifies conditions (CELL_FACH state, SRB#1) and aligns with 3GPP TS 25.321 MAC protocol details. |
standard_1339 | What is the role of the Broadcast Service Function (BSF) in the multi-modal QoS flow solution? | The BSF stores and updates the information of multi-modal data flows group, including the corresponding PCF IP address, UE IP address, etc. It also discovers other PCFs that are responsible for generating the QoS policy for multi-modal data flows belonging to the same multi-modal data flows group. | Answer accurately describes BSF's role in storing/updating multi-modal flow group info and discovering PCFs for QoS policy generation, aligning with 3GPP standards. |
standard_1904 | What action should the participating MCVideo function take if the public user identity and an MCVideo ID binding has expired? | If the participating MCVideo function cannot find a binding between the public user identity and an MCVideo ID or if the validity period of an existing binding has expired, then the participating MCVideo function shall reject the SIP REFER request with a SIP 404 (Not Found) response with a specific warning text. | Answer is accurate, specific, and aligns with standard telecom procedures for handling expired bindings in MCVideo. |
standard_1410 | What should the UE include in the Contact header when sending a REGISTER request? | The UE should include SIP URI(s) that contain the IP address of the UE or FQDN, the instance ID of the UE in the +sip.instance parameter if the UE supports GRUU, all supported ICSI values, and IARI values for the IMS communication services and IMS applications it intends to use in a sip.app-subtype feature tag. | Answer accurately lists required Contact header components per 3GPP TS 24.229, including SIP URI, +sip.instance for GRUU, ICSI/IARI values, and sip.app-subtype, with no errors or omissions. |
standard_1214 | What is the purpose of providing Usage Monitoring control related information per access in the PDU Session related policy control information? | The purpose of providing Usage Monitoring control related information per access in the PDU Session related policy control information is to enable the PCF control of PDU Session level Usage Monitoring based on the access type used to carry the traffic. | Answer accurately describes the purpose of per-access usage monitoring control in 5G policy, aligning with 3GPP specifications for PCF-based monitoring by access type. |
standard_767 | What should the MAC entity do if the DPR MAC control element is included in Msg3 and the MAC PDU is successfully decoded? | If the DPR MAC control element is included in Msg3 and the MAC PDU is successfully decoded, the MAC entity should provide the serving eNB with information about the amount of data available for transmission in the UL buffers associated with the MAC entity, and with information about the difference between the nominal U... | Answer accurately describes the MAC entity's actions upon successful decoding of Msg3 with a DPR MAC control element, including providing buffer status and power headroom information, aligning with 3GPP TS 36.321 specifications. |
standard_85 | What is a key issue with network-initiated activation and de-activation of functional alias(es)? | Currently, there are no procedures defined in 3GPP TS 23.280 or any other MC specification where the network initiates functional alias(es) activation/de-activation procedures. | Answer is factually accurate, specific to 3GPP TS 23.280, clear, and directly addresses the key issue of missing procedures. |
standard_1303 | What is the focus of Solution 1, which proposes to use IPsec between the RN and DeNB to protect both the user plane and control plane signalling? | The focus of this solution is to prevent attacks by using IPsec to protect S1-AP/X2-AP interface between the RN and DeNB, and to use IPsec for both control plane and user plane to protect the S1-U and X2-U interfaces. | Answer accurately describes the focus on IPsec protection for both user and control planes across specified interfaces, matching the statement's intent. |
standard_2456 | Under what conditions should FEC be used to provide robustness against packet loss? | FEC should be used to provide robustness against moderate packet loss rates at high delay scenario, especially in environments with high packet loss rates and/or high delay (RTT). However, it may not be appropriate when packet losses are caused by insufficient throughput since it introduces bit rate overhead. | Answer correctly identifies FEC use for moderate packet loss in high delay, notes overhead trade-off, and is clear and factual. |
standard_576 | What should the IWF do when it decides to request permission to send media and the controlling function is in the MCPTT system? | The IWF should send the Floor Request message toward the MCPTT floor control server in the MCPTT system with the required Floor Priority and Floor Indicator fields, and the MCPTT ID associated with the requesting LMR user in a User ID field if privacy is not requested. | Answer accurately describes IWF procedure for floor request to MCPTT system with correct fields and privacy condition. |
standard_1335 | What is the primary role of the 5GSM sublayer in 5GS session management? | The main function of the 5GSM sublayer in 5GS session management is to support the PDU session handling in the UE and in the SMF, which is transferred via the AMF. | Answer accurately describes 5GSM's role in PDU session handling between UE and SMF via AMF, aligning with 3GPP specifications. |
standard_2074 | When does the old AMF determine whether the new AMF supports ATSSS or not? | The old AMF determines whether the new AMF supports ATSSS based on the supported features provided by the new AMF during step 4 of the registration. | Answer correctly identifies that the old AMF checks new AMF's ATSSS support via supported features during registration step 4, aligning with 3GPP TS 23.502 procedures. |
standard_1076 | What is the difference between a user channel and a control channel? | User channels are intended to carry user information, while control channels are used to provide signalling information for connection management, mobility management, and radio resource management. | Answer accurately distinguishes user and control channels, is clear, specific, and factual. |
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CellularS2-Bench
A Staged, Evidence-Grounded Benchmark for Cellular Network Security Reasoning
Overview
Cellular networks are critical infrastructure supporting billions of users and safety-critical services worldwide. Security vulnerabilities in 3GPP specifications, which define the required behavior of devices and operators, can propagate globally across all compliant implementations. Our benchmark focuses on core control-plane specifications from 3GPP Release 17, including TS 24.501 for 5G NAS, TS 24.301 for 4G NAS, and TS 38.331 for 5G RRC. It processes 1,760 paragraphs, 13,800 sentences, 424 figures, and 340 tables, capturing both textual and multimodal specification content. In total, the benchmark contains 7,851 questions and instances spanning three stages, and incorporates 43 real-world vulnerabilities. In addition to newly constructed tasks, it integrates and corrects subsets from seven prior datasets, providing a comprehensive and curated evaluation suite for specification understanding and security reasoning.
Dataset Structure
CellularS2-Bench is organized into three stages, each adding a harder reasoning requirement:
Stage 1 — Intra-Clause Specification Comprehension (1,500 + 1,000 questions)
Each question is answerable from a single specification clause. No cross-clause integration is required.
| Task | Format | Description |
|---|---|---|
| Extractive QA (EQA) | Open-ended answering | Answer must appear verbatim in the clause |
| Abstractive QA (AQA) | Open-ended answering | Answer synthesizes nearby normative text |
| Multi-choice QA (MCQA) | Multiple-choice answering | Select the specification-compliant option |
| TeleQnA (verified) | Multiple-choice answering | Curated from standards subsets |
| Tele-Eval (verified) | Open-ended answering | Curated from 3GPP-origin questions |
Stage 2 — Evidence-Grounded Answering (1,500 + 500 questions)
Same task types as Stage 1, but every prediction must include explicit evidence — clause numbers, table identifiers, or figure labels — that supports the answer.
| Task | Format | Description |
|---|---|---|
| EQA-E | Open-ended answering + evidence | Extractive answer with citation |
| AQA-E | Open-ended answering + evidence | Abstractive answer with citation |
| MCQA-E | Multiple-choice answering + evidence | Option selection with citation |
| TSpec-LLM (verified) | Multiple-choice answering + evidence | Reproduced and verified subset |
Stage 3 — Vulnerability/Inconsistency Labeling with Evidence and Explanations (1,269 + 2,082 questions)
The hardest stage. Requires integrating multiple clauses, reasoning over tables and figures, and performing security-aware interpretation grounded in 43 real-world vulnerabilities.
| Task | Format | Description |
|---|---|---|
| Cross-Clause QA (CCQA) | Open-ended answering + evidence | Answer requires combining multiple clauses |
| Table & Figure QA (TFQA) | Open-ended answering + evidence | Reasoning over structured multimodal content |
| Vulnerability Labeling | Vulnerability/inconsistency Labeling | Label + vulnerability category + evidence |
| Evidence & Explanation | Vulnerability/inconsistency Labeling | Full attack story + supporting clause set |
| 5GSC (verified) | Vulnerability/inconsistency Labeling | Security vs. non-security sentence classification |
| ConTester (verified) | Vulnerability/inconsistency Labeling | Semantic equivalence over 4G NAS pairs |
| CellularLint (verified) | Vulnerability/inconsistency Labeling | Re-annotated under standard NLI definitions |
| TeleQuAD-Tabular (verified) | Open-ended answering + evidence | QA over specification tables |
Dataset Statistics
| Stage | Original Q | Verified External Q | Total |
|---|---|---|---|
| Stage 1 | 1,500 | 1,000 | 2,500 |
| Stage 2 | 1,500 | 500 | 2,000 |
| Stage 3 | 1,269 | 2,082 | 3,351 |
| Total | 4,269 | 3,582 | 7,851 |
Source Specifications
| Specification | Version | Description |
|---|---|---|
| TS 24.501 | Release 17 v17.7.1 | 5G NAS — registration, authentication, security mode control |
| TS 24.301 | Release 17 v17.6.0 | 4G NAS — EPS procedures, downgrade/compatibility behaviors |
| TS 38.331 | Release 17 v17.0.0 | 5G RRC — radio connection, security activation |
Construction Pipeline
CellularS2-Bench was built through a semi-automated pipeline with expert verification:
- Specification collection — raw 3GPP PDFs are parsed into clause-level text, structured JSON for tables, and typed JSON for figures (state machines, procedure flows, bit layouts)
- Question generation — LLM-assisted QA generation conditioned on clause content, constrained to produce grounded, non-hallucinated outputs
- Human validation — each instance is created by one annotator and independently reviewed by experts; accepted only when both mark it as Pass
- External dataset curation — seven prior datasets are selectively integrated, with correctness verified against specification text and evidence traceability confirmed
Unlike prior benchmarks that rely solely on LLM-generated entries, every instance in CellularS2-Bench is grounded in specification evidence and has passed expert review.
Integrated External Datasets
The following datasets are included as verified and corrected subsets:
| Dataset | Stage | Original size | Kept | Key corrections |
|---|---|---|---|---|
| TeleQnA | 1 | 3,000 | 500 | Restricted to standards subsets; removed ill-posed items |
| Tele-Eval | 1 | 83,056 | 500 | Restricted to 3GPP-origin questions only |
| TSpec-LLM | 2 | 100 | 500 | Pipeline reproduced; evaluation set regenerated |
| 5GSC | 3 | 2,401 | 1,454 | Removed sentences with insufficient context |
| ConTester | 3 | 366 | 320 | Corrected state-vs-action annotation errors |
| CellularLint | 3 | 55 | 55 | Re-annotated under standard NLI definitions |
| TeleQuAD-Tabular | 3 | 278 | 253 | Corrected gold answers; removed ambiguous mappings |
Intended Uses
Intended use:
- Evaluating LLM-based frameworks on 3GPP specification understanding
- Benchmarking evidence-grounded retrieval and security reasoning
- Studying cross-clause dependency resolution in technical standards
- Research on automated vulnerability detection in cellular protocol specifications
Out-of-scope use:
- Operational attack planning or exploitation of cellular networks
- Any use that facilitates harm to telecommunications infrastructure
Maintenance
CellularS2-Bench will be versioned alongside 3GPP releases. Updates will focus on newly introduced or modified clauses, verified by domain experts following the same annotation protocol. Community contributions and error reports are welcome via the repository issue tracker.
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