Rapid Uplink Access by Parallel Signaling on a 5G Random-Access Channel
Disclosed are systems and methods for reducing delays and obtaining rapid uplink access in 5G, by transmitting pre-grant messages on a random access channel. In one version, a user transmitting an SR (scheduling request) message at a pre-assigned time may transmit a second message on a random access channel synchronized with the SR message. For example, the second message may be a BSR (size) message, thereby avoiding additional delays. In another version, the user may transmit a series of messages on the random access channel without waiting for an uplink grant, thereby reducing delays further. The methods can generally be implemented by software upgrades, a cost-saving advantage. AI (artificial intelligence) may be used to determine which users may transmit messages pre-grant, and on which random access channels.
1 . A method for transmitting wireless messages on a network having a RACH (random access) channel and a PUCCH (physical uplink control) channel, the method comprising:
transmitting an SR (scheduling request) message of a pre-assigned duration on the PUCCH; and
transmitting a BSR (buffer status report) message on the RACH channel synchronously with the SR message, wherein synchronously comprises having a predetermined time relationship between the SR message and the BSR message.
2 . The method of claim 1 , wherein the SR message and the BSR message are transmitted at the same time on different frequencies.
3 . The method of claim 1 , wherein the SR message and the BSR message are transmitted within a predetermined time interval of each other, the predetermined time being communicated in an uplink or downlink message prior to the BSR message.
4 . The method of claim 1 , further comprising transmitting, on the RACH channel, a DMRS (demodulation reference signal) before the BSR message.
5 . A method for transmitting wireless messages on a network having a RACH (random access) channel and a PUCCH (physical uplink control) channel, the method comprising:
transmitting an SR (scheduling request) message of a pre-assigned duration on the PUCCH;
transmitting a BSR (buffer status report) message on the RACH channel synchronously with the SR message, wherein synchronously comprises having a predetermined time relationship between the SR message and the BSR message; and
transmitting, on the RACH channel, a DMRS (demodulation reference signal) before the BSR message,
wherein the DMRS and the BSR messages are separated by a gap smaller than a predetermined sensing time, including having no gap.
6 . The method of claim 5 , wherein the predetermined sensing time is a time interval during which user nodes are required to monitor the random access channel before transmitting.
7 . The method of claim 1 , further including using an artificial intelligence (AI) model comprising software configured to take as input one or more parameters of the network, and to provide as output one or more recommendations of which users of the network may transmit messages on the random access channel.
8 . The method of claim 7 , further including calculating a network performance metric comprising a measure of network performance, wherein the AI model is configured to select the recommendations to optimize the network performance metric.
9 .- 30 . (canceled)