22Co-existence recommendations

22 Co-existence recommendations

(1) It is recommended that all spectrum licensees, when planning and deploying radiocommunications systems, consider the co-existence issues that may arise with GSM-R networks, and typically GSM-R vehicle mobile stations, that may operate in the 1800 MHz band. It is also recommended that affected licensees seek to coordinate between themselves to help manage and resolve interference that may arise to or from GSM-R vehicle mobile stations. (2) Licensees should also be aware of the following matters that may affect co-existence between GSM-R and public mobile telecommunications service networks: (a) co-existence between GSM-R and public mobile telecommunications service networks has been studied in the reports specified in subsection 21(2), which conclude that in general a 200 kHz guard band is sufficient for co-existence, though is some cases additional coordination may be needed; (b) some GSM-R network operators may choose to implement a two channel guard band (400 kHz) at the frequency boundary with another spectrum licensee, to obtain more isolation from frequency adjacent radiocommunication services; (c) coordination with mobile stations may be difficult due to their mobility, although GSM-R services typically operate in close proximity to railway infrastructure; (d) potential interference paths are in both directions (such as to and from GSM-R vehicle mobile stations); (e) ECC Report 162 describes a range of mechanisms that may be used to address co-existence between GSM-R and public mobile telecommunications service networks.