Aspects of the disclosure relate to systems and methods for configuring a voice domain preference and/or a radio access technology (RAT) preference for a user equipment (UE) in a radio access network (RAN) according to the capability and compatibility of the UE. The UE may send at least one of a requested voice domain preference or a requested RAT preference to a 5G core network (5GC). The UE may also receive, from the 5GC, at least one of a voice domain preference or a RAT preference based on, for example, the capability and compatibility of the UE. The 5GC may additionally generate a RAT/frequency selection priority (RFSP) index for the UE, giving priority to the voice domain preference and/or the RAT preference of the UE. The 5GC may communicate the RFSP index to the RAN. Other aspects, embodiments, and features are also claimed and described.

A system comprising: a plurality of mobile edge caches integrated within a corresponding plurality of mobile environments; a local network manager coupled to each edge cache device in each mobile environment to provide network connectivity to client devices within each mobile environment; a mobile high speed network interface coupled to each mobile edge cache within each mobile environment to establish a high bandwidth link to one or more fixed high speed network interfaces when the mobile environment is within range; a fixed core cache to store content titles owned by a content provider, the content titles to be distributed to the plurality of mobile edge caches, each content title comprising a plurality of title segments; a plurality of fixed edge caches coupled between the fixed core cache and the mobile edge caches; a content distribution manager to cause the title segments to be strategically spread across the fixed edge caches, wherein different fixed edge caches are initially to be provided with different sets of the title segments; a first content aggregator coupled to a first fixed edge cache, the first content aggregator to request title segments not stored in the first fixed edge cache from the plurality of mobile edge caches as the high bandwidth link becomes available to each of the mobile edge caches.

Network hardware devices organized in a wireless mesh network (WMN) in which one mesh network device includes a first radio and one or more additional radios coupled to an application processor. The application processor receives a request to stream content data to a client consumption device, via the first radio, and receives portions of the content data from multiple devices at different retrieval rates via the one or more additional radios. The application processor calculates an average retrieval rate for retrieving the first segments and the second segments, determines a desired streaming bitrate value, and determines an end time to complete transmission of a first portion to the client consumption device. The application processor transmits, via the first radio, the first portion such that at least one byte of the first portion is transmitted at the end time to complete transmission of the first portion.

A device, system and method for emergency audio transmission is provided. A server receives, over a broadband network, a request to make an emergency audio transmission to a talk group. The request is received from a first push-to-talk (PTT) device communicatively connected with the talk group over a narrow band network at which a second PTT device of the talk group has floor control. In response to granting the request, the server receives, from the first PTT device, an audio transmission over the broadband network, and transmits the audio transmission to the talk group via the broadband network.

Systems and methods for delivering content to user equipment are described. The content may be delivered using Internet Protocol (IP) delivery, Quadrature Amplitude Modulation (QAM) delivery, or another delivery format. For example, the system may receive content including a plurality of segments. The system may use manifest data to identify each of the plurality of segments. The system may also use the manifest data to generate index data for the plurality of segments, and the index data may be delivered to user devices with the plurality of segments. In some aspects, the system may use location information (e.g., timestamps, such as program clock references) for one or more data packet of the one of the plurality of segments to generate location information for other data packets.

Techniques are described for switching streaming of media content between content delivery networks (CDNs) during mid-stream. An initial CDN can be used to stream the media content. The performance of a second CDN can be measured by requesting a fragment of the media content as a measurement or test fragment. Streaming of the media content can be switched to the second CDN if its performance is determined to be better than the initial CDN.

A hardened VoIP system is presented that includes secure push-to-talk voice functionality. Through the addition of encryption, authentication, user filtering, and integration with new and existing LMR systems, a secure voice platform ensures malicious software, unauthorized access and brute force security attacks will not compromise the voice communications of the system. The VoIP system is engineered to ensure graceful system degradation in the event of maintenance activities, natural disasters and failure modes. The hardened VoIP system offers the functions a LMR trunking system while utilizing broadband connections. Private calls, group calls, Emergency Alarms with covert monitoring capability, scanning and priority scanning may be incorporated into the system. The system includes a VoIP controller that serves as a trunking controller, manages available VoIP based conference bridges, and assigns them as needed to the parties involved in each voice call. The system includes multiple fallback methods that may be prioritized based on pre-failure analytics.

Embodiments relate to systems and methods for modifying the transmission rate of media data in order to improve craft-based media playback system performance during handover events in a communication system.

Embodiments of this application disclose a call setup method, and relate to the field of communications technologies. The method is used to resolve a problem that an LTE terminal cannot provide a voice service effectively. The method includes: receiving, by a terminal, a first notification message, where the first notification message includes a first IMS incoming call notification message; establishing, by the terminal, a first IMS call connection based on the first notification message, and allocating a resource for the first IMS call connection; receiving, by the terminal, a second notification message, where the second notification message includes any one of the following messages: a circuit switched CS notification message, an indication message sent by a network side device, and a second IMS incoming call notification message; and releasing, by the terminal based on the second notification message, the resource occupied by the first IMS call connection.

The present invention moves service control, including call control, for a user element from a cellular network to a multimedia subsystem (MS), such as the Internet Protocol (IP) Multimedia Subsystem (IMS). Call control is provided by the MS irrespective of whether the user element is using cellular or WLAN access for the call. Call control for originating and terminating calls in the CS or MS as well as transferring calls between a circuit-switched subsystem (CS) and MS is anchored at a continuity control function (CCF) in the MS. All call signaling for the call is passed through the CCF. The CCF is a service provided in the user element's home MS and anchors the user element's active CS calls and MS sessions to enable active roaming across the CS and MS.