The beauty of ZigBee RF4CE remote controls is specifically in fast response time (allows gaming) and low power consumption, with smart two-way communication features that do not impact (a very long) battery life.
ZigBee wrote an interesting white paper on this:
ZigBee is a technology for private area networking. And this technology adopts new ideas. The scheduler and diversity antenna are the features of EVDO and LTE. Cees Links promotes these features to ZigBee. Well, what is the price of this promotion? Complexity? Stability?
Have Samsung TV with "ZigBee" Remote( Nearly a year or so old).It is not really ZigBee - using 802.15.4 - yes. Remote is nice/ Find function is ok. But batteries last less than in IR one. :) Test Rf control by sending TV commands from my test RF module
I think using RF and seeking low power consumption will result in a remote control with a slow response. It takes some time to bring up the RF link from sniff mode.
However, the benefit of not requiring to be in front of the TV becomes a good idea.
Now people will be able to play pranks by changing the channels without being in the room... "mal-functioning TV set?"
ACK when it comes to the topic "interoperability". The RF4CE standard should offer interoperability between devices of different manufacturers. But typically "vendor-specific" data fields or profiles cancels out the idea of a standard.
Regarding the wakeup-call:
The key to saving energy (battery power) while being online (receiving) is duty cycling. Most of the time the receiver is asleep and depending on the system design it wakes up (very fast), checks for messages in the channel, eventually performs some actions and finally goes back to sleep again. With the right duty cycle schedule you can run such a system for years from a coin cell.
What I see with this approach to remote control is a very effective way to prevent a consumer from utilizing a "universal remote" as a substitute control device. By switching to an RF link, that option is not possible by any means. A second advantage is the opening up to interference from other remote systems operating in the same band. One question I offer, which is about the "find-me" option, is how is such a long battery life available when there is a receiver listening for a wake-up call? Aside from that, it would seem that if the unit will run from a watch battery, then probably units will be sold with the battery soldered in and not consumer replaceable. So while this device does increase profits, it remains unclear what the actual consumer advantage is.