The dealmaking for mobile location-based services (LBS) companies heated up this week. First, high-end audio maker, Harman (HAR), agreed to buy Aha Mobile. The company essentially turns your smartphone into an in-vehicle infotainment system.

And today, we got another deal: Motorola (MOT) purchased Aloqa, which develops software to stream event and digital coupons to smartphones.

One of the hottest categories in tech is location-based services (LBS). Essentially, this means using your smartphone's GPS capability to show friends your current location. One of the early leaders in the space is Foursquare, which recently snagged a large amount of venture capital. But other players are diving in. For example, Shopkick recently rolled out a pilot of its LBS platform to allow shoppers at Best Buy (BBY) to get discounts. And of course, Facebook recently launched its Places capability.

In fact, now AT&T (T) is getting into the game. The telecom giant has teamed up with an LBS startup, SCVNGR, which has a rewards system for the iPhone and Android. It will be in 50 AT&T stores throughout the Midwest as a trial program.