Q: Whether it can be configured in neighboring cells with other manufacturers' base station equipment, and whether there are indoor and outdoor interference problems ?
A: We do support inter-cell handover between multiple ORS. See:
We have confirmed that ORS supports handover:
- between two ORS on the same frequency (ex. B39 and B39);
- between two ORS on different frequencies (ex. B38 and B39).
We have confirmed that handover can be based on:
- S1 interface;
- X2 interface.
We have not yet tested handover between ORS and 3rd party hardware (ex. Huawei) on a public 4G/5G network. However, we believe that the following handover use cases are possible:
- eNb Amarisoft to eNb Huawei/ZTE over S1
- eNb Amarisoft to eNb Huawei/ZTE over X2
- gNb Amarisoft to gNb Huawei/ZTE over N2/N3 in SA
- gNb Amarisoft to gNb Huawei/ZTE over XN in SA
We believe that the following handover use cases should also be possible but must be confirmed:
- gNb Amarisoft SA to eNb Huawei/ZTE (with certain core networks)
- gNb Amarisoft NSA to eNb Huawei/ZTE (with certain core networks)
- eNb Amarisoft to gNb Huawei/ZTE SA or NSA (with certain core networks)
The following use cases, which are unrelated to handover, are not possible (yet):
- NSA mode combining gNb Amarisoft with eNb Huawei
- NSA mode combining eNb Amarisoft with gNb Huawei
Inter-MME handover is not supported by Amarisoft epc/5gc. However, if 3rd party core network suports inter-MME, Amarisoft eNb/gNb will support this mode of handover operation.
For N2/N3 and XN, please refer to Amarisoft manual.
Regarding the case of interferences (indoor or outdoor), you are probably refering to the following use case:
- ORS runs Amarisoft gNb inside a factory
- Huawei/ZTE RRH/RU + gNb is present not too far away, on the same frequency as ORS
- Huawei RRH cell and ORS cell overlap and have some intersection
- there is no way to run ORS and Huawei/ZTE RRH/RU + gNb on different frequencies
- the factory building is not metalic and thus does not provide Faraday isolation
This situation can be mitigated to some degree through the following approach:
- assign different cell ID to ORS and to Huawei RRH + gNb
- use core network features and force UEs in the factory to attach to ORS rather than to Huawei RRH + gNb
- adjust the TX / RX power of ORS
- adjust the TX / RX power of Huawei RRH + gNb (if possible)
- adjust beam forming of Huawei RRH + gNb (if possible)
Whenever suggested core network features are not available, using the local core network (epc/5gc) of ORS is the easiest way to force UEs of the factory to attach to ORS rather than to the public network running on the same frequency.
Obviously, overlapping cells will lead to degraded performance, yet are still useful for certain applications such as "plug-and-play" private network for Industry 4.0.