초록 ▼

A system for transmitting process control information from remote sites is disclosed. In one embodiment, data is collected by a remote monitoring device or devices and transmitted to a first Cellular Digital Packet ("CDPD") modem via one or more RS232 interfaces. The applications program in the firs

A system for transmitting process control information from remote sites is disclosed. In one embodiment, data is collected by a remote monitoring device or devices and transmitted to a first Cellular Digital Packet ("CDPD") modem via one or more RS232 interfaces. The applications program in the first CDPD modem transmits a signal to a second CDPD modem initiating communications. The applications program in the second CDPD modem returns a signal, indicating the status of the interface. Data transmission is initiated when the status of both serial data interfaces is established.

대표청구항 ▼

A system for transmitting process control information from remote sites is disclosed. In one embodiment, data is collected by a remote monitoring device or devices and transmitted to a first Cellular Digital Packet ("CDPD") modem via one or more RS232 interfaces. The applications program in the firs

A system for transmitting process control information from remote sites is disclosed. In one embodiment, data is collected by a remote monitoring device or devices and transmitted to a first Cellular Digital Packet ("CDPD") modem via one or more RS232 interfaces. The applications program in the first CDPD modem transmits a signal to a second CDPD modem initiating communications. The applications program in the second CDPD modem returns a signal, indicating the status of the interface. Data transmission is initiated when the status of both serial data interfaces is established. ireless cellular network of claim 1, wherein the spatial processor further comprises a configurable logic responsive to the control signal to vary both a number of the composite signal s separate d as well as the number of the e estimated source signals. 11. The wireless cellular network of claim 10, wherein the configurable logic further comprises logic for evaluating the composite signals over time. 12. The wireless cellular network of claim 1, wherein the spatial processor further comprises an evaluator to evaluate the estimated source signals during a transmission interval in which at least one of the base stations transmits the known data patterns and to initiate the signal to the at least one of the base stations when a change of the spatial transmission configuration is required. 13. The wireless cellular network of claim 1, wherein the combiner includes responsiveness to the control signal to vary a number of estimated source signals combined into a corresponding subscriber datastream. 14. The wireless cellular network of claim 1, further comprising: a parser for parsing an uplink subscriber datastream into substreams; and spatially separate transmitters for transmitting the substreams of the uplink subscriber datastream on an assigned channel of a multiple access protocol. 15. The wireless cellular network of claim 1, wherein the subscriber unit further comprises receive processes from at least one of a group of receive processes consisting of diversity, space decoding, space-time decoding, beam forming and interference canceling. 16. A subscriber unit as recited in claim 1 wherein the subscriber unit is incorporated into a bridge or router to provide a wireless bridge or router. 17. A subscriber unit for use in a cellular system with base stations each including spatially separate transmitters for transmitting selected substreams of at least one of a plurality of subscriber downlink datastreams on an assigned channel of a multiple access protocol, and the subscriber unit comprising: means for receiving signals generated from at least one of the plurality of spatially separate transmitters; means for determining a number of substreams to be derived from the signals; means for separating the signals into the number of substreams determined in said act of determining; means for combining the substreams into a corresponding subscriber downlink datastream; and means for signaling the base when a change of a spatial transmission configuration is required in order to resolve the composite signals into estimated substreams. 18. A repeater base station suitable for use in conduction with a master base station that is part of a cellular network, the repeater base station including: a slave base station; and a wireless interface unit comprising, spatially separate receivers for receiving on an assigned channel of a multiple access protocol composite signals resulting from spatially separate transmission selected substreams communicated from a master base station; a spatial processor to separate the composite signals into estimated slave substreams; and a combiner for combining the estimated substreams into a corresponding slave datastream, wherein the slave datastream is passed to the slave base station for transmission by the slave base station. 19. A communications network comprising: a master station controller; at least one base station controller that communicates with the master station controller; a plurality of base station, each base station being arranged to communicate with an associated one of the base station controllers, wherein at least one of the base stations is designated as a master base station; and a repeater base station as recited in claim 18. 20. A unit for use in a communications network that delivers DSL service to customers, the unit comprising: a head end DSL modem arranged to communicate with a remotely located DSL modem using a DSL protocol; and a wireless acce