Bux - would this "maintenance connection" consume about the same amount of network resources as an IS-95 phone that was turned on but not being used or would it be a "more active" connection that uses significantly more network resources.
Almost certainly the same as a voice call where neither party is speaking (about 2kbps). But the real interesting question is what is the latency for adding and subtracting channels as needed. For instance, for W-CDMA there is no channel addition latency, but each individual burst of data requires some extra overhead to sync up. Since I am not familiar with the internals of IS-95B (I refuse to cough up $300 for a spec, most of which I don't care about), I can't answer my own question, but I am curious as to how long it takes for an assigned, but unused, channel to be disconnected, deassigned, reassigned, and connected to someone who needs it. It could, in theory, be very quick since the hard part is finding the multipath delays and that is already known from the one on-going channel. But in practice I suspect that there are handshaking issues and such which limit the process. Also, what is being transmitted over a channel which is not being used, but has not yet been disconnected? Again, in theory there is no need to send anything, but in practice it is probable that stuff is sent to maintain backward compatibility with basestation hardware.
Clark |
