# US 2018/0324867 A1 · Transmitting sr prior to completing rach > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324867 A1 - Document ID: US20180324867A1 - Status: Published application - Kind: A1 - Application number: 15/973,104 - Filed: 2018-05-07 - Published: 2018-11-08 - Earliest claimed: 2017-05-05 - Assignees: Motorola Mobility LLC - Applicants: Motorola Mobility LLC - Inventors: Prateek Basu Mallick; Joachim Loehr; Ravi Kuchibhotla - Web page: https://patentgrep.com/patent/US20180324867A1 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 72/569: {of the traffic information} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract For handling multi UL access procedures, methods, apparatus, and systems are disclosed. One apparatus includes a processor and a transceiver for communicating with a mobile communication network using a plurality of radio bearers. The processor initiates a first random-access procedure for a first radio bearer. The processor receives a scheduling request trigger for a second radio bearer while the first random-access procedure remains pending. The processor determines whether simultaneous scheduling request transmission is permitted, wherein the transceiver transmits a first scheduling request message for the second radio bearer in response to simultaneous scheduling request transmission being permitted. ## Claims ### Claim 1 A method comprising: initiating, by a remote unit, a first random-access procedure for a first radio bearer; receiving, at the remote unit, a scheduling request trigger for a second radio bearer while the first random-access procedure remains pending; determining whether simultaneous scheduling request transmission is permitted; and transmitting, by the remote unit, a first scheduling request message for the second radio bearer to a mobile communication network in response to simultaneous scheduling request transmission being permitted. ### Claim 2 (depends on 1) The method of claim 1, wherein determining whether simultaneous scheduling request transmission is permitted comprises identifying a logical channel priority associated with the second radio bearer. ### Claim 3 (depends on 2) The method of claim 2, further comprising comparing the logical channel priority associated with the second radio bearer to a first priority threshold, wherein simultaneous scheduling request transmission is permitted if the logical channel priority exceeds the first priority threshold. ### Claim 4 (depends on 1) The method of claim 1, wherein determining whether simultaneous scheduling request transmission is permitted is based on a configuration of the second radio bearer. ### Claim 5 (depends on 1) The method of claim 1, wherein the mobile communication network defines simultaneous scheduling request transmission as being permitted. ### Claim 6 (depends on 1) The method of claim 1, further comprising determining whether an amount of transmission power is sufficient to simultaneously transmit messages for the first random-access procedure and the first scheduling request message in parallel, in response to simultaneous scheduling request transmission being permitted, wherein transmitting the first scheduling request message for the second radio bearer comprises reducing power of a message of a lower priority of the first radio bearer and second radio bearer. ### Claim 7 (depends on 1) The method of claim 1, further comprising: determining a first logical channel priority of the first radio bearer and a second logical channel priority of the second radio bearer in response to simultaneous scheduling request transmission not being permitted; and cancelling the first random-access procedure in response to the first logical channel priority being lower than the second logical channel priority. ### Claim 8 (depends on 1) The method of claim 1, wherein the second radio bearer is not configured with any physical uplink control channel (“PUCCH”) resource for the first scheduling request message, wherein transmitting the first scheduling request message comprises initiating a second random-access procedure. ### Claim 9 (depends on 1) The method of claim 1, further comprising: receiving a buffer status report grant for a buffer status report in response the first scheduling request message; and transmitting uplink data on the buffer status report grant. ### Claim 10 (depends on 1) The method of claim 1, further comprising: receiving a backoff indicator message, the backoff indicator message including a service identifier field; and initiating a backoff timer for a specific service for an amount of time based on the backoff indicator message. ### Claim 11 (depends on 10) The method of claim 10, wherein the backoff indicator message includes a plurality of service identifier fields, wherein the backoff indicator applies to each service identified in the plurality of service identifier fields. ### Claim 12 (depends on 10) The method of claim 10, wherein the backoff indicator message includes a plurality of service identifier fields, wherein the backoff indicator applies to all services except those identified in the plurality of service identifier fields. ### Claim 13 An apparatus comprising: a transceiver that communicates with a mobile communication network using a plurality of radio bearers; and a processor that: initiates a first random-access procedure for a first radio bearer; receives a scheduling request trigger for a second radio bearer while the first random-access procedure remains pending; and determines whether simultaneous scheduling request transmission is permitted, wherein the transceiver transmits a first scheduling request message for the second radio bearer in response to simultaneous scheduling request transmission being permitted. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein determining whether simultaneous scheduling request transmission is permitted comprises the processor identifying a logical channel priority associated with the second radio bearer, wherein simultaneous scheduling request transmission is permitted if the logical channel priority exceeds a priority threshold. ### Claim 15 (depends on 13) The apparatus of claim 13, wherein the processor uses a configuration of the second radio bearer to determine whether simultaneous scheduling request transmission is permitted. ### Claim 16 (depends on 13) The apparatus of claim 13, wherein the mobile communication network defines simultaneous scheduling request transmission as being permitted. ### Claim 17 (depends on 13) The apparatus of claim 13, wherein the processor further: determines a first logical channel priority of the first radio bearer and a second logical channel priority of the second radio bearer in response to simultaneous scheduling request transmission not being permitted; and cancels the first random-access procedure in response to the first logical channel priority being lower than the second logical channel priority. ### Claim 18 (depends on 13) The apparatus of claim 13, wherein the transceiver receives a backoff indicator message, the backoff indicator message including a service identifier field, wherein the processor initiates a backoff timer for a specific service for an amount of time based on the backoff indicator message. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the backoff indicator message includes a plurality of service identifier fields, wherein the backoff indicator applies to each service identified in the plurality of service identifier fields. ### Claim 20 A method comprising: initiating, by a remote unit, a first random-access procedure for a first radio bearer; receiving, at the remote unit, a scheduling request trigger for a second radio bearer while the first random-access procedure remains pending; and transmitting, by the remote unit, a first scheduling request message for the second radio bearer to a mobile communication network prior to completing the first random-access procedure.