AT&T opened up about 5G plans

What is 5G : The Next Generation Mobile Networks Alliance defines the following requirements for 5G networks: [2]

• Data rates of several tens of megabits per second should be supported for tens of thousands of users
• 1 gigabit per second to be offered simultaneously to many workers on the same office floor
• Several hundreds of thousands of simultaneous connections to be supported for massive sensor deployments
• Spectral efficiency should be significantly enhanced compared to 4G
• Coverage should be improved
• Signalling efficiency should be enhanced
• Latency should be reduced significantly compared to LTE.

Facing pressure from an increasingly competitive wireless market, AT&T opened up about 5G plans. AT&T says it's ready to start sharing its 5G roadmap. It's working with Ericsson and Intel, and it will begin testing 5G in a lab this spring before testing it outdoors later in 2016. AT&T  expects that its 5G network will deliver speeds between 10 and 100 times faster than 4G [1]

Fifth-generation networks should be dramatically faster than the 3G and 4G networks in use today. [3] 

References

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1. David Goldman,"AT&T will start testing 5G this year",CNN, http://money.cnn.com/2016/02/15/technology/att-5g/index.html

2. Wikipedia, "5G", Widipedia, https://en.wikipedia.org/wiki/5G

3. Cnet, http://www.cnet.com/news/how-5g-will-push-a-supercharged-network-to-your-phone-home-and-car/