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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0354874 (1994-12-09) |
| 우선권정보 | SE-0004119 (1993-12-10) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 339 인용 특허 : 0 |
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 exte
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 in base stations may be provided dynamically determined by demand. A packet data controller in each Mobile services Switching Center 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 providing internetworking with external network(s). A second “separate”embodiment, in order to minimize the impact on the current cellular system, primarily utilizes the base station portion of the cellular system, relying for the remaining network parts on a separate mobile packet data infrastructure.
An apparatus for providing packet data communication to and from mobile stations in a digital TDMA cellular system having a plurality of base stations providing regular cellular control channels and regular cellular dedicated traffic channels; one or more mobile services switching centers, each bein
An apparatus for providing packet data communication to and from mobile stations in a digital TDMA cellular system having a plurality of base stations providing regular cellular control channels and regular cellular dedicated traffic channels; one or more mobile services switching centers, each being associated with a visitor location register and being coupled to a subordinated plurality of the base stations; and home location register means for storing information on mobile station subscribers, the apparatus comprising: channel providing means for providing, in at least some of the base stations, on a per cell basis, one or more shared packet data channels for packet transfer to and from the mobile stations, and packet transfer controlling means for controlling the packet transfer; channel defining means for defining, on a per cell basis, the packet data channel to be used for packet transfer; first packet data mode establishing means for establishing packet data mode for a mobile station to enable the mobile station to send and receive packets over the packet data channels; first packet transferring means for transferring packets between the mobile stations and base stations; second packet transferring means for transferring packets between the base stations and their respective superior mobile services switching centers; packet routing means for routing packets to and from a service area of a mobile services switching center; first means for performing cell selection for a mobile station in packet data mode; first means for performing location updating for the mobile station in packet data mode; first packet data mode maintaining means for maintaining the packet data mode for a roaming mobile station; and first packet data mode terminating means for terminating the established packet data mode for the mobile station.
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