Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-05-18
1999-10-26
Trost, William G.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
379 10, 379 15, H04Q 720, H04Q 730, H04Q 734, H04M 124
Patent
active
059743131
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a method for defining an urgency class of a disorder appearing in a base station, in which method a list is maintained in a memory means about the disorders, which may occur in the base station operation, and of the preliminary urgency classes determined for the disorders in question. The invention relates also to a cellular radio system including a base station, comprising transmitter-receiver means for forming a connection with radio units in the radio covering region, memory means for maintaining the list about disorders that can occur in the base station operation and also of the preliminary urgency classes determined for the disorder concerned, and alarm means adapted to search in connection with the base station's malfunction from the memory means the urgency class corresponding the disorder in question as well as to send the alarm message indicating the urgency class to the system operator.
The invention relates particularly to base stations of cellular radio systems and handling of alarms sent from these to the operator. It is already known to utilize for example in connection with the alarm handling of base stations of the NMT (Nordic Mobile Telephone) cellular radio system an urgency classification based on the quality of the fault or disorder emerged in the base station, i.e. the faults that can occur in the base stations have been classified in advance according to the need of urgent measures. When a fault or disorder of certain type then emerges, the alarm system checks first from the memory where the urgency class the disorder in question belongs. After this an alarm is given to the system operator, whereat the urgency class found from the memory is indicated to the operator. The urgency class reveals then to the operator, how he should deal with the alarm or does this mean that the service personnel should visit immediately the base station installation place, or is it possible to postpone the visitation for instance to the next working day.
The most significant weakness of the above-mentioned known solution is, that if the same disturbance emerges in two base stations, the same alarm is given to the system operator, though the disturbances may have entirely different meaning concerning the base station communications throughput. Or if a faulty base station is situated for example along with a busy highway and half of its capacity is lost due to a malfunction, the base station concerned requires naturally much quicker maintenance than for instance in the case, if a base station is a ski resort loses half of its capacity during summer months, when the resort is closed. In these above-mentioned cases both base stations in known systems, however, transmit the alarms belonging to the same urgency class.
The object of the present invention is to solve the above-mentioned problem and to provide a better method for making the urgency classification of base station alarms. This object is achieved by the method according to the invention, which is characterized in that a preliminary urgency class corresponding the disturbance in question is searched from the memory means and the alarm urgency class is proportioned to the communications situation of the base station by determining a less urgent class than the preliminary urgency class for the alarm, if the base station communications situation is at rest, and by determining a more urgent class than the preliminary urgency class, if the base station communications situation is busy.
The invention is based on the idea, that when it is observed in the disturbance urgency classification in addition to the emerged malfunction type also the base station communications situation, or how many phone calls through the base station concerned has lately been made, a method is achieved enabling better than before to sieve out the alarms that do not imply immediate actions. The most outstanding advantage of the method according to the invention comprises therefore the fact, that the emergency classification is based on the actual recent co
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patent: 4670899 (1987-06-01), Brody et al.
patent: 5016269 (1991-05-01), Rogers
patent: 5394459 (1995-02-01), Djuphammar et al.
patent: 5852649 (1998-12-01), Hodson
patent: 5892758 (1999-04-01), Argyroudis
Pulkkinen Raimo
Viljanen Vesa
Persino Raymond B.
Telecom Finland Oy
Trost William G.
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