| 摘要 |
<p>Apparatuses and mobile stations are described which provide packet data services in TDMA (Time Division Multiple Access) cellular systems, based on providing shared packet data channels optimized for packet data. A first 'integrated' embodiment utilizes the current cellular infrastructure to the extent possible consistent with functional and performance requirements. Shared packet data channels (PDCHs) in base stations (BTS, BSC) may be provided dynamically determined by demand. A packet data (PD) controller in each Mobile services Switching Centre (MSC) controls access to the packet data services. A packet data router in each MSC routes packets to and from the MSC service area. A backbone network interconnects packet data routers and Interworking Functions (IWF) providing internetworking with external network(s). A second 'separated' embodiment, in order to minimize the impact on the current cellular system, primarily utilizes the base station portion of the cellular system, for the remaining network parts relying on a separate mobile packet data infrastructure.</p> |
