Deploying LED emergency converters in underground malls while ensuring effective signal coverage presents unique challenges and requires careful planning. In an underground mall environment, signal propagation is often hindered by the complex structure of the building, including thick concrete walls, metal structures, and a large number of partitions.

　　To address this, a multi - faceted approach is needed. First, the placement of LED emergency converters with built - in signal - transmitting capabilities is crucial. These converters should be distributed strategically throughout the mall, taking into account areas with high foot traffic, exits, and corridors. By installing them at regular intervals and in key locations, a network of signal - emitting points can be established. Additionally, the use of signal - boosting technologies is essential. For example, repeaters or amplifiers can be integrated with the emergency converters to enhance the strength of the signal, ensuring that it can penetrate through the various obstacles in the underground space.

　　Another important aspect is the choice of communication protocols. Given the need for reliable and fast communication during emergencies, protocols such as Wi - Fi 6 or low - power wide - area networks (LPWANs) like LoRa can be considered. Wi - Fi 6 offers high - speed data transfer, which is useful for transmitting real - time information such as evacuation routes or emergency announcements. LPWANs, on the other hand, have a long - range and low - power consumption advantage, making them suitable for covering large areas of the underground mall with minimal energy usage. Moreover, the integration of GPS or indoor positioning systems with the LED emergency converters can help in accurately determining the location of individuals during an emergency, further enhancing the effectiveness of the signal coverage and emergency response efforts.