RSSSouthern Linc is the second utility to take issue with a filing by NextEra Energy, another utility, which submitted to the FCC a report that NextEra said provides evidence that LTE operations to adjacent narrowband LMR operations at 900 MHz is likely to cause interference.
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In a previous filing, Southern Linc said that based on its real-world deployment experience, it believes that a guard band between broadband and narrowband operations in the 900 MHz band is unnecessary and that the most important factor in mitigating any potential interference between broadband and narrowband operations is site selection and deployment.
In the latest filing, Southern Linc reiterated that point and criticized the report cited in the NextEra filing. Southern Linc said UTC did not endorse the report because of concerns raised by various UTC member utilities including Southern Co. about alleged flaws in the underlying testing methodology and assumptions.
“Southern Linc further clarifies that many of the assumptions made in the report either do not match or are directly contradicted by Southern Linc’s actual LTE network deployment experience,” the filing said. The Southern Linc filing is here. Ameren Missouri outlined its concerns with the NextEra filing and report here. Both Southern Linc and Ameren are working with Anterix, a proponent of realigning the 900 MHz band.
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