Clark your comment on 538:
"First, 538 is a compendium of different, virtually unrelated, items. The only thing they all have in common is that they mention CDMA. And of the three disparate things in the patent, two are worthless. I practically guarantee it. On a scale with the GTE patent at 0 and the Qualcomm Power Control patent at 10, the two items are at 1 with an uncertainty of 1. (The two items are: 1-general discussion of the merits and trades involved in different methods of power control, 2-a completely obvious multiple banks approach to a multipath correlator)"
okay. it's a compendium, but doesn't appear unrelated. he's defining an entire system. I believe what you mean is the despread technique, adaptive power control and varying bandwidth require different functions to achieve the end means, therefore are unrelated. But, it has been IDC's practice now to patent entire systems; in this case a method of, as Lomp states in the summary:
A general object of the invention is high capacity communications, due to lower multipath fading and total equivalent bandwidth and data rate.
A second general object of the invention is a spread spectrum transmitter having variable and/or adjustable signal bandwidth capabilities.
Another general object of the invention is a system and method which results in maximization of user density within a cell domain while minimizing mobile user transmitted power.
A further object of the invention is to provide an apparatus and method which controls the power level of a mobile station so that the power level received at the base station of each cell is the same for each mobile station.
Another object of the invention is to provide a system and method for automatically and adaptively controlling the power level of a mobile user in a cellular communications network.
A further object of the invention is to provide a spread-spectrum system and method which allows operating a spread-spectrum transmitter in different geographic regions, wherein each geographic region has a multiplicity of cells, and wherein cells within a geographic region may have different size cells and transmitter power requirements.
they effectively applied some of these techniques in BCDMA (varying bandwidth and adaptive power control), and in this patent are applying said methods to mobility. I recall that Q currently also applies varying power control techniques. The method mentioned here attempts to equalize needed mobile phone power in both urban and rural environments in order that maximum time use be obtained and multipath problems be lessened (increased power interferes in more dense population or increased cell site areas). Also in doing this he defines an ingenious multipath processor for tracking spread spectrum signals. Even though Lomp's name is on the patent, it appears several individual techniques are "borrowed" from others in IDC's current fold (who, I think, have a bright future - varying bandwidth is not a new patent at IDC). So, Lomp appears to have combined several of these "individual" techniques into one system designed specifically for wireless fixed and mobile LANs. He is defining, basically, then, a system that attempts to marry a fixed architecture with a mobile architecture. I think that is his ultimate goal here. Even though it doesn't appear absolutely clear in his patent writing, this seems to be the end result. For this reason he needs the varying bandwidth, improved power control, and an ingenious multipath processor for signal maximization and interpretation.
By Lomp's own comment in the patent, "As a means of responding to and dealing with this plurality of groups, the multipath processor is an improvement to a spread-spectrum receiver system." I believe he is saying (between the lines) "an improvement" over Q's spread spectrum receiver system. He said it, and in theory and in use (already been tested) these "combined" elements have worked as claimed.
I certainly don't understand why so many continue to carry such an attitude toward IDC. Apparently it remains popular despite what is coming down the pipe. I know you're busy, but it seems you possibly skimmed the patent and possibly didn't read it all. |
