InFLEXion

Description

Another member in the family of FLEX™ protocols is InFLEXion™, Motorola's advanced voice and data messaging protocol utilizing both FMFrequency Modulation and Linear modulation signaling methods. The FCC action to release 50 kHzKiloHertz (kHz) 10^3 Hz wide Narrow Band PCS channels has allowed the InFLEXion™ technology to become available. The InFLEXion™ protocol allows for the creation of a voice and data messaging network with frequency reuse capabilities similar to that of cellular telephony. The protocol is based upon the ReFLEX™ protocol already discussed. It is also possible to operate completely in a simulcast mode. Other FLEX™ type protocols may be mixed on an InFLEXion™ based channel. InFLEXion™ based systems make specific use of the ReFLEX™ capability to request a messaging unit to respond to a location request, combined with directed transmission of pages within specific geographic areas. The messaging unit response enables the network control equipment to determine the specific geographic area in which the messaging unit is located. Using this response, a voice message may be sent to the nearest transmitter(s) to which the pager is currently located. The voice messaging over the 50 kHzKiloHertz (kHz) 10^3 Hz channels features variable compression techniques allowing equal to or greater than 24 times the subscriber capacity of today's 25 kHzKiloHertz (kHz) 10^3 Hz channels. Simultaneously, other voice messages may be delivered on the same frequency to messaging units which are geographically separated from each other so that there will be no transmission interference. With InFLEXion™ Data signaling the throughput on the 50 kHzKiloHertz (kHz) 10^3 Hz channel allows signaling of up to 112 Kbps As in ReFLEX™ systems, the InFLEXion™ protocol provides a choice of multiple inbound signaling speeds to allow the system structure to operate with the fewest number of receiver sites for a given traffic level.