8. MES Control and Monitoring Functions (CMF)
8.1 Special Test Equipment (STE)
Many of the tests in this clause require that the MES be situated in an environment where receipt of a network control channel and of NCF commands is controlled by the test laboratory. This will require the provision of STE (see clause A.2). This STE shall provide the means to generate and to communicate to the MES, either radiated via its antenna or conducted via direct connection to its antenna port, the network control channel and the required NCF commands, under the control of the test laboratory. The STE shall also provide means for the test laboratory to interface its test equipment with the MES for the purpose of monitoring the MES responses.
8.2 Self-monitoring functions
8.2.1 Processor monitoring
8.2.1.1 Purpose
Protection of radio services and systems from uncontrolled RF transmissions from the MES.
8.2.1.2 Conformance requirements
The MES shall incorporate a processor monitoring function for each of its processors involved in the manipulation of traffic and in control and monitoring functions.
The processor monitoring function shall detect failure of the processor hardware and software. Not later than 1 s after any detectable fault condition occurs, the transmissions shall be suppressed (carrier-off) until the processor monitoring function has determined that all fault conditions have been cleared.
The fault conditions which cause transmission shutdown shall be specified and declared by the applicant.
The conformance requirements apply for the environmental conditions as specified in I.2, AttachmentⅨ.
8.2.1.3 Method of test
As it is considered impracticable to artificially induce processor faults in an MES, no test is given for the processor monitoring function.
8.2.2 Transmit frequency generation sub-system monitoring
8.2.2.1 Purpose
Protection of radio services and systems from uncontrolled RF transmissions from the MES.
8.2.2.2 Conformance requirements
The MES shall incorporate a transmit frequency generation sub-system monitoring function. Not later than 5 s after any detectable failure of the transmit frequency generation sub-system occurs, the transmissions shall be suppressed (carrier-off) until the transmit frequency generation sub-system monitoring function has determined that all fault conditions have been cleared. The fault conditions which cause transmission shutdown shall be specified and declared by the applicant.
The conformance requirements apply for the environmental conditions as specified in I.2, AttachmentⅨ.
8.2.2.3 Method of test
As it is considered impracticable to artificially induce transmit frequency generation sub-system faults in an MES, no test is given for the transmit frequency generation sub-system monitoring function.
8.3 Network control authorization and reception
8.3.1 Network control authorization
8.3.1.1 Purpose
Protection of radio services and systems from uncontrolled RF transmissions from the MES.
8.3.1.2 Conformance requirements
During POWER-ON no transmissions shall occur from the MES.
Following POWER-ON the MES shall enter a controlled, non-transmitting (carrier-off) state. This state shall be maintained whilst the MES is not synchronized with the appropriate network control channel(s).
Without synchronizing to the appropriate network control channel(s), it shall not be possible to initiate carrier-on state.
Within 30 s of having lost the appropriate network control channel(s) the MES shall suppress transmissions (carrier-off).
The conformance requirements apply for the environmental conditions as specified in I.2, AttachmentⅨ.
8.3.1.3 Method of test
The MES shall be cycled through its power-on and power-off states. Attempts shall be made to initiate calls using normal user operational Procedures. The transmitting state of the MES shall be monitored to ensure compliance with the test requirements.
The environmental test conditions are given in I.3, AttachmentⅨ.
8.3.1.4 Test Procedures
The MES shall be situated in an environment where receipt of the appropriate network control channel(s) is controlled by the test laboratory.
a) The MES shall be in a power-off state, situated such that it is not in receipt of a network control channel.
b) The MES shall be powered-on.
c) An attempt shall be made, using normal user operational Procedures, to initiate a call.
d) A network control channel shall be activated and a call shall be initiated using normal user operational Procedures.
e) The network control channel shall then be deactivated.
f) An attempt shall be made, using normal user operational Procedures, to initiate a call.
g) The network control channel shall be reactivated and a call shall be initiated using normal user operational Procedures.
Throughout this Procedures, the transmission state of the MES shall be monitored.
8.3.1.5 Test requirement
During and after test Procedures step a), the MES shall be in power-off state.
During and after test Procedures step b), no transmissions shall occur (carrier-off).
During and after test Procedures step c), no transmissions shall occur (carrier-off).
After test Procedures step d), the MES shall be transmitting (carrier-on).
Within 30 s of test Procedures step e), MES transmissions shall cease (carrier-off).
During and after test Procedures step f), no transmissions shall occur (carrier-off).
After test Procedures step g), the MES shall be transmitting (carrier-on).
8.3.2 Network control reception
8.3.2.1 Transmission disable/enable
8.3.2.1.1 Purpose
Protection of radio services and systems from uncontrolled RF transmissions from the MES.
8.3.2.1.2 Conformance requirements
An MES which is transmitting (carrier-on) shall not continue transmissions for a period of time longer than 1 second after receipt of a transmission disable command from its NCF. After ceasing transmissions the MES shall then not transmit until it receives a transmission enable command from its NCF, or until it is powered-off and then powered-on again.
An MES which is powered-on but not transmitting (carrier-off) when it is in receipt of a transmission disable command from its NCF shall then not transmit until it receives a transmission enable command from its NCF, or until it is powered-off and then powered-on again.
The conformance requirements apply for the environmental conditions as specified in I.2, AttachmentⅨ.
8.3.2.1.3 Method of test
The MES shall be sent transmission enable and transmission disable commands. Attempts shall be made to initiate calls using normal user operational Procedures. The transmitting state of the MES shall be monitored to ensure compliance with the test requirements.
The environmental test conditions are given in I.3, AttachmentⅨ.
8.3.2.1.4 Test Procedures
The MES shall be situated in an environment where receipt of the appropriate network control channel(s) and of NCF commands is controlled by the test laboratory.
a) A network control channel shall be activated, the MES shall be powered-on, and a call shall be initiated using normal user operational Procedures.
b) An NCF command to disable transmissions shall be sent to the MES.
c) Whilst the disable command applies an attempt shall be made to initiate a call using normal user operational Procedures.
d) An NCF command to enable transmissions shall be sent to the MES and a call shall be initiated using normal user operational Procedures.
e) The MES shall be set to a carrier-off mode, and an NCF command to disable transmissions shall be sent to the MES.
f) Whilst the disable command applies an attempt shall be made to initiate a call using normal user operational Procedures.
g) An NCF command to enable transmissions shall be sent to the MES and a call shall be initiated using normal user operational Procedures.
Throughout this Procedures, the transmission state of the MES shall be monitored.
8.3.2.1.5 Test requirement
After test Procedures step a), the MES shall be transmitting (carrier-on).
During test Procedures step b), within 1 s of receipt of the NCF command to disable transmissions, MES transmissions shall cease (carrier-off).
During and after test Procedures step c), no transmissions shall occur (carrier-off).
After test Procedures step d), the MES shall be transmitting (carrier-on).
During and after test Procedures steps e) and f), no transmissions shall occur (carrier-off).
After test Procedures step g), the MES shall be transmitting (carrier-on).
8.3.2.2 Transmit frequency control
8.3.2.2.1 Purpose
Protection of radio services and systems from uncontrolled RF transmissions from the MES.
8.3.2.2.2 Conformance requirements
The MES shall set the carrier frequency of its transmission according to the command of the NCF. The carrier frequency has to be controlled such, that the entire nominated bandwidth of the terminal falls completely within the operational frequency band(s) specified and declared by the applicant.
The conformance requirements apply for the environmental conditions as specified in I.2, AttachmentⅨ.
8.3.2.2.3 Method of test
The nominated bandwidth of the MES shall be monitored relative to the carrier frequency commanded, and relative to the operational frequency bands for the MES specified by the applicant.
The environmental test conditions are given in I.3, AttachmentⅨ.
8.3.2.2.4 Test Procedures
This test shall be carried out at least twice, once for the minimum and once for the maximum MES transmit frequency for which the MES is designed to operate, as specified by the applicant.
Where available, two additional transmit frequencies shall also be tested. These frequencies shall be equally spaced between the minimum and maximum frequencies. The commanded transmit frequencies used for the test shall be entered in the test report.
The MES shall be situated in an environment where receipt of a network control channel and of NCF commands is controlled by the test laboratory.
a) A network control channel shall be activated and the MES powered-on.
b) An appropriate NCF control MESage shall be sent, commanding the MES to set its carrier frequency to one of the transmit frequencies to be tested.
c) The test shall be repeated for the other transmit frequencies to be tested.
The carrier mask for the transmit frequency under test shall be monitored on a spectrum analyzer, using the Procedures given in subclause 5.3.
8.3.2.2.5 Test requirement
The MES shall set the center frequency of its transmission according to the NCF command.
The entire nominated bandwidth for each transmit frequency tested shall be contained completely within the operational frequency band(s) specified by the applicant.
8.4 Fellow radio stations in a dual-mode or multi-mode terminal
8.4.1 Purpose
Protection of radio services and systems from uncontrolled RF transmissions from the MES.
8.4.2 Conformance requirements
Any fellow radio station in a multi-mode MES shall not transmit without reception of a network control channel for the system for which it is designed.
The conformance requirements apply for the environmental conditions as specified in I.2, AttachmentⅨ.
8.4.3 Method of test
The MES shall be placed in a suitable environment which isolates the MES from the networks of its fellow modes. It shall be verified that no transmissions are made from that mode.
8.4.4 Test Procedures
The MES shall be placed in an environment where the receipt of network control channel(s) of supporting networks of the fellow modes is prevented. For each fellow mode radio station, an attempt shall be made, using normal user operational Procedures, to initiate a call. Throughout this procedures, the transmission state of the MES shall be monitored.
8.4.5 Test requirements
Throughout the test Procedures, no transmission shall occur.