The following radiation-related considerations must be examined before using a typical (SNOM M700 system). These include (but are not limited to):
When a signal hits a building, it is diffracted or absorbed, reducing the signal to some extent. The level of absorption depends on the type of building and its environment, the Quantity of the fixed structure. This is an important aspect of cover planning.
Signals from receiving antennas are weakened by interference from other signals. These signals may originate from the same network or other objects. A well-planned DECT Multicell installation should detect the following potential sources of interference for optimal placement of base stations and repeaters.
Other DECT systems or devices transmitting at similar frequencies weaken reception.It is therefore recommended to place the base stations sufficiently close to each other.
The recommended distance between two base stations depends on the physical distance between the base stations.
If the path loss is reduced, e.g. by minimizing the number of walls/obstacles in the path, signals from base stations will travel further distances.
In a typical office building, the recommended distance between two base stations is 20-40m.
Location planning / cell coverage:
The actual cell coverage and quality in a system can be determined using a special handset. Function where the handset sets up an audio loop.
Note: This function can be used with base stations in an infrastructure, but also with individual base stations without an Ethernet connection, so that obstacles and difficulties in an installation can be detected.
To place the 2nd base station:
It is recommended to have an RSSI better/equal to -75dBm and never over -90dBm.
Numeric number lower than 075 dBm on the handset screen. Please note that the minus sign is not displayed on the screen.
Typically, installations such as office buildings, warehouses and hospitality should be equipped with base stations and repeaters on multiple floors to ensure uniform and complete radio coverage.
Do not connect two or more multi-cell base stations via a repeater. One repeater may only be used to extend the range of a single base station. If Ethernet is available, it is recommended to use a multicell station instead of a repeater.
Open spaces can be covered by a sparse network of base stations. In such applications, the base stations and/or repeaters cover a greater range due to the extended line-of-sight.
The antennas in the base stations are almost omnidirectional; there is no need to consider how the base stations face each other during operation.
These are some recommendations for placement strategies: