mschere, sure wish par-q, IQ, or somebody comfortable walking around in the deep wireless tech stuff would show me where I'm wrong(if I am?) in reading that "seamless" handoff patent in your ref post. I have spent hours trying to understand what it says, and it just keeps saying "Holy smokes! Batman, InterDigital wants to flip the whole wireless industry on it's head, this could change everything!".
Check this out, and then take a look at the underlined words in the patent excerpt from you ref post below. All wireless systems today are designed to operate from the top down,i.e., the network of base stations is in charge and decides to recognize a subscriber unit(handset or mobile phone), what kind of service level to give each handset, and when, where and how to handoff that handset to another base station. The base station is King in today's wireless world, and the hansets take whatever the base stations decide to give them.
Dr Faith M. Ozluturk has a very different idea according to what I'm reading in his ref patent. From what I can figure out Doc Ozluturk wants to make the handsets King, and turn the base stations into servant transmission towers! Yikes! That has to sound like total anarchy in the rest of the wireless industry, especially with the engineers. It throws everything they have right out the window, and has to blow out most of the logic circuits in their "top-down is THE way" heads. I bet the propellers on a lot of Nokia engineer hats really spin up a storm whenever "seamless" or "Ozluturk" gets mentioned. Same thing at the Ericsson base station design headquarters LOL! Gotta be plenty of breeze in those halls if I'm reading this right. Take a look;
6. A mobile subscriber system that controls cell hand-off in a multicellular CDMA communication system while roving among individual cells, each cell associated with a base station which transmits a global pilot code, where the subscriber has a preexisting communication link with one of the base stations, (snip)
; and means for establishing a new communication link and abandoning said preexisting communication link to thereby define said new communication link as the preexisting communication link when said minimized transmit power between said mobile subscriber and said selected base station is less than the transmit power of said preexisting communication link.
7. The system of claim 6 wherein the means for acquiring said valid global pilot code further comprises:
means for selecting a global code seed associated with one of said plurality of candidate base stations from a plurality of global code seeds stored in a memory;
means for searching for a global pilot code using said selected global code seed; and
means for performing said search to a maximum expected phase shift between the preexisting communication link and said selected candidate base station.
8. The system of claim 7 further comprising means for synchronizing said transmission between the mobile subscriber and said selected base station.
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