Tomorrow's alarm

LTE for Alerting

Conditions for bidirectional communication

LTE – Mobile Radio Standard for Alerting

LTE is the wireless broadband standard for mobile devices and offers itself as a second channel for hybrid alerting alongside POCSAG. LTE can also take on additional functions.

What is LTE?

What is LTE?

LTE stands for “Long Term Evolution” and refers to the third generation mobile radio standard. Depending on the country, LTE uses the UHF frequency band in the medium to upper waveband (700 to 2600 MHz).

What Role Does LTE Play in Alerting?

In modern alerting systems, LTE is used as a “fallback level” for communication between the control center and the devices of the persons to be alerted.

The combination of the two communication standards POCSAG and LTE forms the “backbone” of hybrid alerting, which is now standard in the emergency services.

In addition, the blue light and public safety service can create the conditions for bidirectional communication via LTE. In plain language: The alerted person immediately reports back whether he or she can be at the scene of the incident in a timely manner. If this is not the case, the control center can immediately send out a second alert and thus ensure that the required emergency services are on site.

Advantages of LTE for Alerting

As a fallback or redundancy level for alerting, one ideally needs a communication standard that is widely available, offers very good reception and – not to forget – can be used at reasonable cost. LTE has these characteristics and is also a future-proof technology due to its worldwide distribution and the large number of terminals in the field.

LTE is not a proprietary, i.e. provider-owned, protocol whose continued existence depends on individual providers and for which the choice of end devices may be limited. Rather, LTE is used intensively worldwide, so it is a marketable and future-proof standard.

LTE modules cause only low energy consumption. The battery life is correspondingly long.

The possibilities for using LTE in the alerting network are further extended if pagers with an integrated Bluetooth interface (e.g. s.QUAD X15 or s.QUAD ATEX) are used, as is the case with the s.ONE solution. Then the smartphones of the emergency forces can be included in the alerting.

The status of an LTE infrastructure can be well monitored via monitoring functions and via network protocols such as TCP/IP. This creates transparency and the prerequisite for maximum availability: irregularities are detected immediately.

Pagers and LTE for Security Authorities

The public LTE network is growing steadily. However, the security authorities continue to use paging networks. Until a complete changeover has taken place, Swissphone is taking advantage of the strengths of both networks with the following innovations:


  • Hybrid connections with an estimated lifetime of 7 to 10 years
  • Hybrid connections with an estimated lifetime of 7 to 10 years


For hybrid alerting, POCSAG connections are equipped with mobile radio modules that run over the mobile IoT standard. Alarm signals are therefore still sent via proven and reliable POCSAG paging technology. However, the mobile radio module additionally enables fast feedback and ensures more reliability.


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    LTE for Alerting