On November 25, 2009, Airvana announced delivery of the latest release of its EV-DO Rev. A software. Release 8.0 allows operators to increase the capacity and performance of their mobile broadband networks through a software upgrade of their existing radio access network equipment. Airvana's EV-DO Release 8.0 addresses growth in mobile broadband data traffic in several important ways. By enhancing the Radio Network Controller (RNC) load balancing function, Release 8.0 ensures that the resources within the radio access network are distributed to serve smartphone and data card traffic in an effective manner. In addition, this release also optimizes the way network control messages are transmitted, so the existing infrastructure can handle more devices, call activity, and in-session user mobility. Radio network performance enhancements in Release 8.0 also result in higher data rates for users in weak signal areas. Airvana's Release 8.0 software is available for new EV-DO network deployments and as a software upgrade for existing networks.