UHF RFID Spectrum in U.S. Faces Potential Reallocation Risk
Recently, NextNav—a company specializing in positioning, navigation, timing (PNT), and 3D geolocation technology—submitted a petition to the Federal Communications Commission (FCC). In its petition, NextNav requested a reallocation of the 902-928 MHz frequency band, a segment widely used for ultra-high frequency radio frequency identification (rfid) applications.
NextNav proposes an expansion of its licensed power levels, bandwidth, and priority. Additionally, the company advocates for incorporating 5G connectivity on a relatively narrow bandwidth to support a terrestrial 3D PNT network. This network is intended to facilitate bidirectional communication within the lower 900 MHz band. According to NextNav, the new system could enhance location mapping and tracking services, such as those employed in enhanced 911 (E911) communications. Spokesperson Howard Watman emphasized that the plan would provide a valuable backup to the Global Positioning System (GPS) and release much-needed spectrum for 5G broadband services.
However, the proposal has sparked significant concern within the ultra-high frequency radio frequency identification (rfid) industry. Many experts in this field argue that any alteration to the 902-928 MHz band could disrupt existing rfid operations, which play a critical role in inventory management, asset tracking, and various identification processes across multiple industries.
This debate illustrates the ongoing challenge of balancing the needs of emerging technologies, such as 5G and advanced PNT networks, with those of established systems like rfid. As the FCC deliberates on NextNav’s request, both sectors remain vigilant, advocating for a solution that preserves the reliability of rfid applications while embracing the benefits of technological innovation.
The final decision by the FCC will likely have significant implications for both advanced positioning networks and traditional rfid systems, shaping the future of communications and identification technologies in the United States.
RFID Industry Warnings and Concerns
Organizations such as RAIN Alliance and GS1 US have voiced serious concerns about NextNav’s recent petition to the FCC. They argue that if the petition is approved, it could have a destructive impact on the reliability and functionality of radio frequency identification (rfid) technology. This potential interference threatens to undermine essential systems that support supply chains, businesses, and government agencies, thereby reducing overall operational efficiency and resilience.
RAIN Alliance CEO Aileen Ryan emphasized the widespread use of radio frequency identification technology in the United States. Currently, around 80 billion items are tagged with UHF RAIN RFID labels, covering multiple sectors including retail, logistics, healthcare, pharmaceuticals, automotive, and aviation. The industry is particularly worried that any disruption caused by NextNav’s petition could severely affect these critical applications, leading to significant economic consequences.
In response to these concerns, the FCC is currently accepting public comments related to the petition, with the comment period set to end on September 5, 2024. RAIN Alliance and other industry organizations are actively preparing joint letters and submitting data to illustrate the potential risks that NextNav’s proposal poses to rfid deployments. Moreover, RAIN Alliance is planning to meet with relevant US Congressional committees to further explain their position and seek broader support. Their collective efforts aim to prevent the approval of the petition and protect the normal operation of radio frequency identification systems.
Bidirectional Capacity and Interference Issues
NextNav’s petition also proposes a significant change in the 902-928 MHz band by introducing bidirectional transmission. Currently, terrestrial navigation systems operate predominantly in a unidirectional mode, where devices merely receive signals. NextNav’s plan aims to enable both uplink and downlink transmissions, which would mark a substantial shift from existing practices.
However, this proposed transformation necessitates higher power levels and increased bandwidth, factors that could potentially interfere with the operation of current radio frequency identification (rfid) devices. Jonathan Gregory, Global Standards Director at GS1 US, has expressed concerns that the elevated power levels required for ground-based GPS systems might “blind” rfid readers, thereby compromising the reliability of radio frequency identification technology. This apprehension is shared by RAIN Alliance and numerous other stakeholders within the rfid industry.
This is not the first instance of NextNav attempting to convince federal authorities to reassign spectrum resources. In 2013, the company submitted a similar petition, which the FCC ultimately rejected due to the risk of interfering with millions of existing Part 15 devices. As technological advancements continue and application domains expand, the judicious allocation of spectrum resources becomes increasingly crucial.
In evaluating NextNav’s current petition, the FCC is tasked with considering a variety of factors, including technical feasibility, the potential impact on existing users, and broader societal benefits. The commission has opened a public comment period, during which it will collect input from all interested parties before reaching a decision. The outcome will likely have profound implications not only for radio frequency identification technology but also for the future resilience and efficiency of entire supply chains.
Ultimately, the FCC’s final decision will need to balance the innovative prospects of bidirectional transmission with the established, critical role that rfid plays across diverse industries.
