sentences:  On 24 May 2012, Airtel announced an agreement to acquire a 49% stake in Wireless Business Services Private Limited (WBSPL) at an investment of .WBSPL was a joint venture founded by Qualcomm, and held BWA spectrum in the telecom circles of Delhi, Haryana, Kerala and Mumbai.Qualcomm had spent US$1 billion to acquire BWA spectrum in those 4 circles.