What is the fine-grained topic of the following text: “Airtel’s continued focus on strengthening its 4G capabilities across multiple spectrum bands will be complemented with the BWA spectrum acquisition from Tikona,” Gopal Vittal, MD & CEO (India & South Asia), Bharti Airtel, was quoted as saying. Only return the topic.
Airtel's acquisition of BWA spectrum from Tikona to enhance 4G capabilities