4G: LTE/LTE-Advanced for Mobile Broadband
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Cites background or methods from "4G: LTE/LTE-Advanced for Mobile Bro..."
...It is known that collision event in the step 1 of RA can be detected by the BS, when the collided IoT devices are separable in terms of the power delay profile [9], [22]....
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...According to LTE standard [9], most of uplink channel resources are scheduled for the data transmission, and thus we assume that each time slot consists of a front gap interval duration τg , which is relatively longer than a following RA duration τc....
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...Specifically, an IoT device randomly selects a preamble from available preamble pool for transmitting to its associated BS via PRACH in the step 1, and exchanges control information via normal uplink/downlink channels in the step 2, 3, and 4 [9]....
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...A great number of possible PRACH configuration indexes are defined in LTE [9], and the PRACH configuration index 6 is suggested to conduct the study in the mIoT network by the 3GPP [5]....
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..., orthogonal pseudo code, such as Zadoff-Chu sequence) transmitting to its associated BS via Physical Random Access CHannel (PRACH) in the 1st step of RA [9]....
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