Sprint Nextel is giving a boost to its wholesale partners. The carrier, in conjunction with network service solutions provider Telespree Communications, is launching an on-demand mobile data offering for Sprint's wholesale customers. The service, officially called Mobile Broadband on Demand, will be offered both as a standalone product or packaged with back-office services, and will be targeted at MVNOs and other enterprises that want to use mobile broadband more sparingly, such as rental car companies, airport kiosks, hotels and retail stores. Release