Abstract: Methods, devices, and system related to wireless communications are disclosed. In one example aspect, a method for wireless communication includes receiving, by a first access node in a first type of communication network, a request from a wireless device to establish a voice session with an Internet Protocol Multimedia System (IMS); initiating, by the first access node, an IMS voice session establishment for the wireless device; configuring, by the first access node, a Quality of Service (QoS) for the IMS voice session using a Protocol Data Unit (PDU) session modification request; and determining, in part based on one or more capabilities of the wireless device, to refrain from triggering a fallback to a second type of communication network for the IMS voice session establishment.

Abstract: Systems and methods for performing Evolved Packet System (EPS) fallback from a 5G system to an Evolved Packet Core (EPC) system are disclosed. The method, performed in a mobile device, detects a communication at the mobile device. The method then determines whether either the mobile device or a base station supports the communication over new radio. Directly in response to determining that either one of the mobile device or the base station does not support the communication over new radio, the method generates and transmits an EPS fallback message from the mobile device to the base station, wherein the EPS fallback message instructs the base station to initiate a fallback procedure from the 5G system to the EPC system.

Abstract: Systems and methods for categorizing communication data are described herein. The systems and methods enable an IMS core network to register a user equipment as a 5G-capable device and store communication data in a manner that differentiates the communication data from non-5G devices. Once identified as a 5G-capable device and information that 5G coverage is available is received, the registration message from the user equipment to the IMS core is modified to configure the IMS core to store the communication data as 5G communication data rather than non-5G communication data.

Abstract: Devices, systems, and methods relate to performing Internet Protocol (IP) Media Subsystem (IMS) bearer activation and radio bearer activation at different times. In some embodiments, a radio bearer is activated after the IMS bearer is activated. The radio bearer that is activated after the IMS bearer is activated may utilize a different Radio Access Technology (RAT) than an initial radio bearer. In certain instances, a device initiates activation of the radio bearer upon receiving confirmation that the IMS bearer is activated, or initiates activation of the radio bearer a predetermined period of time after initiating activation of the IMS bearer. In various embodiments, staggered IMS bearer activation and radio bearer activation can prevent collisions at components of an Evolved Packet Core (EPC).

Abstract: Dynamically steering data traffic sessions based on traffic type may include: determining that both frequency division duplex (FDD) and time division duplex (TDD) are available for an air interface between a user equipment (UE) and a base station (BS); determining a first traffic type expected over the air interface for a first data traffic session; based on at least the first traffic type, determining that FDD is a preferred duplex scheme for the first data traffic session; instructing the UE to use FDD over the air interface for the first data traffic session; determining a second traffic type expected over the air interface for a second data traffic session; based on at least the second traffic type, determining that TDD is a preferred duplex scheme for the second data traffic session; and instructing the UE to use TDD over the air interface for the second data traffic session.

Abstract: A solution for providing user equipment (UE) location information during an emergency call (e.g., an E911 call) includes: detecting an emergency call originating from the UE; determining a location of the UE; based on at least detecting the emergency call originating from the UE, transmitting the location of the UE across a cellular network to an emergency monitoring node (e.g., a public safety answering points (PSAP) and/or a gateway mobile location center (GMLC)); and based on at least detecting the emergency call originating from the UE, transmitting the location of the UE across a packet data network (e.g., the internet, using a data plan) to the emergency monitoring node. This provides an alternate path for the location information, and some examples use a larger set of location information sources. In some examples, during the emergency call, based on available battery power, the UE location information may be updated.

Abstract: A system and method may improve service setup time and reliability for user equipment (UE) fallback procedures in cellular networks. Logic in the UE may define an event to trigger a measurement report and send that measurement report to the base station upon initiating fallback procedures. This event and measurement report may allow the 5G base station (g-NB) to know which frequency is going to be the best choice at the time of setting up the voice service by looking at radio signal strength indicators coming from the 5G UE for each frequency in the measurement report. Incorporating the measurement report process into the logic of the UE for call setup that also includes the fallback process for may result in substantially faster call setup time as well as better voice call success rate.

Abstract: Providing a voice call includes: receiving, from a user equipment (UE), a request to initiate a voice call traffic session; requesting setup of a voice call data pipe; based on at least a setup of the voice call data pipe not completing prior to a timer event, transmitting voice packets over a signaling data pipe; and based on at least the voice call data pipe setup completing, ceasing to transmit voice packets over the signaling data pipe and transmitting voice packets over the voice call data pipe. Placing a voice call includes: requesting, by the UE, to initiate the voice call traffic session; based on at least a first trigger event, transmitting voice packets over the signaling data pipe; and based on at least a second trigger event, ceasing to transmit voice packets over the signaling data pipe and transmitting voice packets over the voice call data pipe.

Abstract: A computer-implemented method of for optimizing cellular network performance including identifying a plurality of voice call records stored on an application server in a first type of cellular network. The method includes analyzing call data associated with the plurality of voice call records, and identifying a set of fall back voice call records. The call data for each voice call record of the set of fall back voice call records includes a fall back indicator indicating that each voice call was initiated using a second type of cellular network. The method includes analyzing cause codes in the call data associated with the set of fall back voice call records and determining, based on the cause codes, a value for at least one KPI associated with the second type of cellular network.

Abstract: Dynamically steering data traffic sessions based on traffic type may include: determining that both frequency division duplex (FDD) and time division duplex (TDD) are available for an air interface between a user equipment (UE) and a base station (BS); determining a first traffic type expected over the air interface for a first data traffic session; based on at least the first traffic type, determining that FDD is a preferred duplex scheme for the first data traffic session; instructing the UE to use FDD over the air interface for the first data traffic session; determining a second traffic type expected over the air interface for a second data traffic session; based on at least the second traffic type, determining that TDD is a preferred duplex scheme for the second data traffic session; and instructing the UE to use TDD over the air interface for the second data traffic session.

Abstract: Methods, devices, and systems related to wireless communications are disclosed. In one example aspect, a device for wireless communication includes a processor that is configured to receive an enquiry message from a base station enquiring capability information of the terminal device and transmit a response message to the base station indicating one or more templates of capability information determined according the one or more radio access technologies and a list of frequency bands.

Abstract: A computer-implemented method for managing radio spectrum in a cellular network including periodically analyzing a local spectrum utilization data to determine spectrum use levels at the local base station. The method may include periodically receiving, at the local base station, neighbor spectrum utilization data from at least one neighbor base station in the cellular network. The neighbor spectrum utilization data is associated with spectrum use levels at the at least one neighbor base station. The method may include receiving a spectrum assignment request from a mobile computing device and, in response, determining a spectrum assignment for the mobile computing device based on at least one of the neighbor spectrum utilization data and local spectrum utilization data. The method may include transmitting the spectrum assignment to the mobile computing device.

Abstract: A system and method may improve service setup time and reliability for user equipment (UE) fallback procedures in cellular networks. Logic in the UE may define an event to trigger a measurement report and send that measurement report to the base station upon initiating fallback procedures. This event and measurement report may allow the 5G base station (g-NB) to know which frequency is going to be the best choice at the time of setting up the voice service by looking at radio signal strength indicators coming from the 5G UE for each frequency in the measurement report. Incorporating the measurement report process into the logic of the UE for call setup that also includes the fallback process for may result in substantially faster call setup time as well as better voice call success rate.

Abstract: Devices, systems, and methods relate to performing Internet Protocol (IP) Media Subsystem (IMS) bearer activation and radio bearer activation at different times. In some embodiments, a radio bearer is activated after the IMS bearer is activated. The radio bearer that is activated after the IMS bearer is activated may utilize a different Radio Access Technology (RAT) than an initial radio bearer. In certain instances, a device initiates activation of the radio bearer upon receiving confirmation that the IMS bearer is activated, or initiates activation of the radio bearer a predetermined period of time after initiating activation of the IMS bearer. In various embodiments, staggered IMS bearer activation and radio bearer activation can prevent collisions at components of an Evolved Packet Core (EPC).

Abstract: A system for routing real-time cellular network services including a voice CSCF including a voice P-CSCF server, a voice I-CSCF server, and a voice S-CSCF server. The system included a message CSCF including a message P-CSCF server, a message I-CSCF server, and a voice S-CSCF server. The system includes a traffic node including one or more processors in communication with a memory containing processor-executable instructions to receive a register request from a user device, where the register request includes one of a voice indicator or a message indicator. The memory also contains processor-executable instructions to identify whether the register request includes the voice indicator or the message indicator and transmit the register request to the voice CSCF when the voice indicator is identified and transmit the register request to the message CSCF when the message indicator is identified.

Abstract: A computer-implemented method of for optimizing cellular network performance including identifying a plurality of voice call records stored on an application server in a first type of cellular network. The method includes analyzing call data associated with the plurality of voice call records, and identifying a set of fall back voice call records. The call data for each voice call record of the set of fall back voice call records includes a fall back indicator indicating that each voice call was initiated using a second type of cellular network. The method includes analyzing cause codes in the call data associated with the set of fall back voice call records and determining, based on the cause codes, a value for at least one KPI associated with the second type of cellular network.

Abstract: Systems and methods for dynamically controlling network registrations are disclosed. The method includes replacing a stringent error message with a lenient cause message in responding to a registration request from a user equipment.

Abstract: Systems and methods for tracking and logging mute events that occur during communication sessions are disclosed. The method includes generating a disruption report that includes one or more aspects of a mute event detected during a communication session. The disruption report is communicated to a network for further analysis.

Abstract: Systems and methods for tracking and logging mute events that occur during communication sessions are disclosed. The method includes generating a disruption report that includes one or more aspects of a mute event detected during a communication session. The disruption report is communicated to a network for further analysis.

Abstract: Systems and methods for tracking and logging mute events that occur during communication sessions are disclosed. The method includes generating a disruption report that includes one or more aspects of a mute event detected during a communication session. The disruption report is communicated to a network for further analysis.