Illmarinen, you are insufferably patronizing. I thoroughly understand that HSCSD achieves higher data rate by using multiple timeslots. Isn't that what it's all about? I know that the GSM rate of 9.6kbs to is doubled to 19.2 with the extra slot, and that it doubles that again using four time slots to 38.4kbs.
What I apparently don't understand, and which I realize now, is that the elimination of this GSM error correction technique boosts data speed per time slot to 14.4. So, depending on the number of time slots used, there is doubling of the 14.4, and so on. I admittedly do not fully understand the error correction technique, but I do know that its elimination boosts the data transfer speed. Need documentation?
My quesion to you, then, as a layman, is this: How does the elimination of this GSM error correction technique nevertheless result in the transmission of error-free data [faster] by HSCSD? If so, why have it as part of GSM in the first place? Why call it error correction if it doesn't correct errors? Are you telling me that there are different kinds of errors? Doesn't increased speed result in more errors, generally speaking?
I'm a layman, and the term "error correction" suggests that the technique is necessary in order to correct errors which cannot be tolerated in data transmissions.
What about handoff problems? What about slow ups to 9.6 kbs when the signal is not strong? Why pay more for slow techniques that don't do handoffs well?
Errors? You still haven't made it very clear. But that's typical.
Keep it simple, Illmarinen |
