| The A-GPS fixing technology have the excellent fixing precision in all mobile position services put forward by current mobile telecommunication service provider, it combined GPS technology and mobile communication network into itself and show obvious virtue in all kinds of fixing thechonlogies.The article summarizes the author's research and development work in master period in BUPT Broad Band Communication Network Lab. The article was divided to 2 parts, the part 1 include chapter 1 to chapter 5, and conclude the author's R&D work in A-GPS hybrid fixing system; the part 2 include chapter 6 to chapter 9, and conclude the author's R&D work in Giga bits Firewall System based on Intel IXP2400 Network Processor.In the R&D of A-GPS system, the author focuses on the principle and implementation of A-GPS technology. In fact, the 2 parts is close bonded together, the principle determines the implementation method, and the implementation method represents its fixing flow in real project.In the R&D of firewall based Intel Network Processor, the author researched the communication mechanism between the management plane and control plane in medium-sized communication software system. In the project, the communication was completed by IXA-a kind of special Intel software architecture. In this article, the author detailed describe the resolving method and process of such problem given Intel's IXA method. |
