Documentation update

# <a name="EtsiTs103759AsrCam"></a>ASN.1 module EtsiTs103759AsrCam

OID: _{itu-t(0) identified-organization(4) etsi(0) itsDomain(5) wg5(5) ts(103759) aid-specific(2) cam(36) major-version-1(1) minor-version-1(1)}_

OID: _{itu-t(0) identified-organization(4) etsi(0) itsDomain(5) wg5(5) ts(103759) aid-specific(2) cam(36) major-version-1(1) minor-version-2(2)}_

## Imports:

* **[EtsiTs103759BaseTypes](EtsiTs103759BaseTypes.md)** *{itu-t(0) identified-organization(4) etsi(0) itsDomain(5) wg5(5) ts(103759) general(1) base-types(3) major-version-1(1) minor-version-1 (1)} WITH SUCCESSORS*<br/>

```

### <a name="IdCamTgt"></a>IdCamTgt

This data type is for identifying target classes for CAM.

```asn1

IdCamTgt ::= Uint8

```

```

### <a name="SetMbObsCamBeacon"></a>SetMbObsCamBeacon

This is a set of observations for the target class c-CamTgt-BeaconCommon,

 where the trigger conditions for different observations are as follows.

* Beacon-IntervalTooSmall<br>

  The difference between the generation 

   time of two consecutive CAMs is less than 80% of the value specified in TS

   103 900 v2.0.0 section 6.1.3. The difference is calculated as the difference 

   between the two values of generationDeltaTime. The two CAMs presented 

   shall have the difference in the generationTime from the security 

   headerInfo be less than 65,535 milliseconds, and the generationTime in the 

   second CAM greater than the generationTime in the first. If the 

   generationDeltaTime value in the second CAM is less than the 

   generationDeltaTime in the first, 65,536 milliseconds shall be added to 

   the value in the second for purposes of determining the difference between 

   the two generationDeltaTime values.  

```asn1

SetMbObsCamBeacon C-ASR-SINGLE-OBS ::= {

  obs-Beacon-IntervalTooSmall,

```

### <a name="SetMbObsCamStatic"></a>SetMbObsCamStatic

This is a set of observations for the target class c-CamTgt-StaticCommon,

 where the trigger conditions for different observations are as follows.

* Static-Change<br>

  Any change in the values of one or more of the 

   following fields: performanceClass, specialTransportType, stationType, 

   vehicleLength, vehicleRole, vehicleWidth. 

   **Semantics of the BIT STRING**: performanceClass(0), 

   specialTransportType(1), stationType(2), vehicleLength(3), vehicleRole(4), 

   vehicleWidth(5).

```asn1

SetMbObsCamStatic C-ASR-SINGLE-OBS ::= {

  obs-Static-Change,

```

### <a name="SetMbObsCamSecurity"></a>SetMbObsCamSecurity

This is a set of observations for the target class c-CamTgt-SecurityCommon,

 where the trigger conditions for different observations are as follows.

Values:

* **obs-Security-MessageIdIncWithHeaderInfo** |<br>

* **obs-Security-MessageIncWithSsp** |<br>

* **obs-Security-HeaderTimeOutsideCertificateValidity** |<br>

* **obs-Security-MessageLocationOutsideCertificateValidity** |<br>

* Security-MessageIdIncWithHeaderInfo<br>

  The messageID is inconsistent

   with the security headerInfo, e.g., messageId = cam(2) but psid in the 

   security headerInfo is not equal to 36, the PSID value of CAM.

* Security-HeaderIncWithSecurityProfile<br>

  The security headerInfo is 

   inconsistent with the security profile specified in ETSI TS 103 097 V2.1.1

   (2021-10), e.g., generationTime is absent in the security headerInfo but 

   is required to be present in the security profile.

* Security-HeaderPsidIncWithCertificate<br>

  The psid in the security 

   headerInfo is not contained in the appPermissions of the certificate, e.g., 

   psid in the security headerInfo is equal to 36, but the appPermissions in the

   certificate does not include the value 36.

* Security-MessageIncWithSsp<br>

  The message payload is inconsistent 

   with the SSP in the certificate, as specified in TS 103 900 v2.0.0,e.g., 

   publicTransportContainer is present in the specialVehicleContainer but the

   relevant SSP in the certificate does not permit publicTransportContainer.

* Security-HeaderTimeOutsideCertificateValidity<br>

  The generationTime

   in the security headerInfo is outside the validityPeriod in the certificate.

* Security-MessageLocationOutsideCertificateValidity<br>

  The 

   referencePosition in the message is outside the region in the certificate. 

* Security-HeaderLocationOutsideCertificateValidity<br>

  The 

   generationLocation in the security headerInfo is outside the region in the 

   certificate. 

```asn1

SetMbObsCamSecurity C-ASR-SINGLE-OBS ::= {

  obs-Security-MessageIdIncWithHeaderInfo |

```

### <a name="SetMbObsCamPosition"></a>SetMbObsCamPosition

This is a set of observations for the target class c-CamTgt-PositionCommon,

 where the trigger conditions for different observations are as follows.

* Position-ChangeTooLarge<br>

  The speed calculated from the change in 

   referencePosition of two consecutive CAMs meets the trigger conditions of 

   Speed-ValueTooLarge-VehicleType.

```asn1

SetMbObsCamPosition C-ASR-SINGLE-OBS ::= {

  obs-Position-ChangeTooLarge,

```

### <a name="SetMbObsCamSpeed"></a>SetMbObsCamSpeed

This is a set of observations for the target class c-CamTgt-SpeedCommon,

 where the trigger conditions for different observations are as follows.

Values:

* **obs-Speed-ValueTooLarge-VehicleType** |<br>

* **obs-Speed-ValueTooLarge-DriveDirectionReverse** |<br>

* Speed-ValueTooLarge-VehicleType<br>

  The trigger conditions depend on

   the stationType as follows:

     - `passengerCar(5)`: The speedValue is greater than 14,000. 

   **Rationale**: Currently, the fastest car in the world has a top speed

   that is less than 500 km/h, i.e., 13,889 cm/s.

     - `motorcycle(4), bus(6), lightTruck(7), heavyTruck(8), trailer(9)`: The 

   speedValue is greater than 8,500. 

   **Rationale**: Currently, the top speed on most popular cars is less than

   300 km/h, i.e., 8,333 cm/s.

     - `unknown(0), pedestrian(1), cyclist(2), moped(3), specialVehicles(10), 

   tram(11)` : The speedValue is greater than 3,000.

   **Rationale**: Currently, non-highway speed limits are usually well below

   100 km/h, i.e., 2,778 cm/s.

     - `roadSideUnit(15)`: The speedValue is greater than 0.

   **Rationale**: Road side units shouldn't be transmitting while being

   transported.

* Speed-ValueTooLarge-DriveDirectionReverse<br>

  The driveDirection is 

   backward (1) and the speedValue is greater than 3,000.

   **Rationale**: Usually, backward drives are far less than 50m long, and

   with maximum possible acceleration of 9 m/s<sup>2</sup> (see trigger conditions for

   LongAcc-ValueTooLarge), max attainable speed is the square root of 

   (2 * 9 * 50) in m/s, which is equal to 3,000 cm/s.

* Speed-ChangeTooLarge<br>

  The acceleration calculated from the change 

   in speedValue of two consecutive CAMs meets the trigger conditions of 

   LongAcc-ValueTooLarge.

```asn1

SetMbObsCamSpeed C-ASR-SINGLE-OBS ::= {

  obs-Speed-ValueTooLarge-VehicleType |

```

### <a name="SetMbObsCamLongAcc"></a>SetMbObsCamLongAcc

This is a set of observations for the target class c-CamTgt-LongAccCommon,

 where the trigger conditions for different observations are as follows.

* LongAcc-ValueTooLarge<br>

  The longitudinalAcceleration is greater 

   than 90 dm/s<sup>2</sup>. (Typical `\mu` (coefficient of friction between asphalt and 

   rubber) is 0.9, so maximum possible acceleration is 0.9*9.8 m/s<sup>2</sup>, i.e., 

   88.2 dm/s<sup>2</sup>.)

```asn1

SetMbObsCamLongAcc C-ASR-SINGLE-OBS ::= {

  obs-LongAcc-ValueTooLarge,

```

### <a name="SetMbObsTgtsCam"></a>SetMbObsTgtsCam

This is a complete set of observations for CAM. Application-specific

 trigger conditions and other relevant information are specified below.

 - _SetMbObsCamBeacon_:

   - `Beacon-IntervalTooSmall`: The difference between the generation 

 time of two consecutive CAMs is less than 80% of the value specified in TS

 103 900 v2.0.0 section 6.1.3. The difference is calculated as the difference 

 between the two values of generationDeltaTime. The two CAMs presented 

 shall have the difference in the generationTime from the security 

 headerInfo be less than 65,535 milliseconds, and the generationTime in the 

 second CAM greater than the generationTime in the first. If the 

 generationDeltaTime value in the second CAM is less than the 

 generationDeltaTime in the first, 65,536 milliseconds shall be added to 

 the value in the second for purposes of determining the difference between 

 the two generationDeltaTime values.  

 - _SetMbObsCamStatic_:

   - `Static-Change`: Any change in the values of one or more of the 

 following fields: performanceClass, specialTransportType, stationType, 

 vehicleLength, vehicleRole, vehicleWidth.

     - `Semantics of the BIT STRING`: performanceClass(0), 

 specialTransportType(1), stationType(2), vehicleLength(3), vehicleRole(4), 

 vehicleWidth(5).

 - _SetMbObsCamSecurity_:

   - `Security-MessageIdIncWithHeaderInfo`: The messageID is inconsistent

 with the security headerInfo, e.g., messageId = cam(2) but psid in the 

 security headerInfo is not equal to 36, the PSID value of CAM.

   - `Security-HeaderIncWithSecurityProfile`: The security headerInfo is 

 inconsistent with the security profile specified in ETSI TS 103 097 V2.1.1

 (2021-10), e.g., generationTime is absent in the security headerInfo but 

 is required to be present in the security profile.

   - `Security-HeaderPsidIncWithCertificate`: The psid in the security 

 headerInfo is not contained in the appPermissions of the certificate, e.g., 

 psid in the security headerInfo is equal to 36, but the appPermissions in the

 certificate does not include the value 36.

   - `Security-MessageIncWithSsp`: The message payload is inconsistent 

 with the SSP in the certificate, as specified in TS 103 900 v2.0.0,e.g., 

 publicTransportContainer is present in the specialVehicleContainer but the

 relevant SSP in the certificate does not permit publicTransportContainer.

   - `Security-HeaderTimeOutsideCertificateValidity`: The generationTime

 in the security headerInfo is outside the validityPeriod in the certificate.

   - `Security-MessageLocationOutsideCertificateValidity`: The 

 referencePosition in the message is outside the region in the certificate. 

   - `Security-HeaderLocationOutsideCertificateValidity`: The 

 generationLocation in the security headerInfo is outside the region in the 

 certificate.

 - _SetMbObsEtsiOnlyPosition_:

   - `Position-ChangeTooLarge`: The speed calculated from the change in 

 referencePosition of two consecutive CAMs meets the trigger conditions of 

 Speed-ValueTooLarge-VehicleType.

 - _SetMbObsEtsiOnlySpeed_:

   - `Speed-ValueTooLarge-VehicleType`: The trigger conditions depend on

 the stationType as follows:

     - `passengerCar(5)`: The speedValue is greater than 14,000. (Currently, the

 fastest car in the world has a top speed that is less than 500 km/h, i.e., 

 13,889 cm/s.) 

     - `motorcycle(4), bus(6), lightTruck(7), heavyTruck(8), trailer(9)`: The 

 speedValue is greater than 8,500. (Currently, the top speed on most popular

 cars is less than 300 km/h, i.e., 8,333 cm/s.)

     - `unknown(0), pedestrian(1), cyclist(2), moped(3), specialVehicles(10), 

 tram(11)` : The speedValue is greater than 3,000. (Currently, non-highway 

 speed limits are usually well below 100 km/h, i.e., 2,778 cm/s.)

     - `roadSideUnit(15)`: The speedValue is greater than 0. (Road side units 

 shouldn't be transmitting while being transported.)

   - `Speed-ValueTooLarge-DriveDirectionReverse`: The driveDirection is 

 backward (1) and the speedValue is greater than 3,000. (Usually, backward 

 drives are far less than 50m long, and with maximum possible acceleration of 

 9 m/s<sup>2</sup> (see trigger conditions for LongAcc-ValueTooLarge), max attainable 

 speed is $`\sqrt{2*9*50}`$ m/s, i.e., 3,000 cm/s.)

   - `Speed-ChangeTooLarge`: The acceleration calculated from the change 

 in speedValue of two consecutive CAMs meets the trigger conditions of 

 LongAcc-ValueTooLarge.

 - _SetMbObsEtsiOnlyLongAcc_:

   - `LongAcc-ValueTooLarge`: The longitudinalAcceleration is greater 

 than 90 dm/s<sup>2</sup>. (Typical $`\mu`$ (coefficient of friction between asphalt and 

 rubber) is 0.9, so maximum possible acceleration is 0.9*9.8 m/s<sup>2</sup>, i.e., 

 88.2 dm/s<sup>2</sup>.)

This is a complete set of observations for CAM.

```asn1

SetMbObsTgtsCam C-ASR-OBS-BY-TGT ::= {

  {MbSingleObservation{{SetMbObsCamBeacon}}   BY 

```

### <a name="SetMbEvCam"></a>SetMbEvCam

This data type defines the IOS for CAM Evidence.

This data type defines the IOS for CAM evidence.

```asn1

SetMbEvCam C-ASR-EV ::= {

  ...