摘要:
A method and system for establishing a secure device-to-device connection between two mobile devices involves the use of a WiFi Direct (LTE Direct or other similar protocols) link paired with an IP Multimedia Subsystems (IMS) link. A device detects the presence of another device that it wishes to connect to. The devices negotiate a group owner, then authenticate each other using a variety of techniques, such as a centrally issued certificate. Thereafter, the devices derive keys to be used for communication, both over the WiFi Direct link and via the IMS link. A WiFi Direct Link may be paired with a Push to Talk over Cellular (PoC) link in order to couple together more than two devices. In such a connection, devices transmit to a group owner, which then sends multicast versions to the rest of the group devices.
摘要:
Embodiments for providing network-assisted to direct device discovery switch are generally described herein. In some embodiments, location information is received at an evolved packet core (EPC) from at least a first and a second user equipment (UE). A network-assisted device-to-device (D2D) request is received from the first UE for establishing a D2D wireless connection with the second UE. Proximity of the first UE and the second UE are monitored. Before detecting the second UE being in proximity to the first UE, direct discovery is determined to be more resource efficient than continuing to provide network-assisted D2D discovery. An indication is provided to the first UE and the second UE to perform direct discovery based on information provided in the indication.
摘要:
Methods, systems, and devices for offloading traffic flows without service disruption are disclosed herein. User equipment (UE) is configured to receive an indication that a current packet data network (PDN) connection can be optimized. The current PDN connection is established over a first PDN gateway (PGW). The UE requests connection over a new PDN connection to a same type of service as the current PDN connection without releasing the connection over the first PGW. The UE routes new traffic flows over a second PGW corresponding to the new PDN connection and routes old traffic flows over the first PGW.
摘要:
Some demonstrative embodiments include devices, systems of selectively providing Internet Protocol (IP) session continuity. In one example, a mobile device may include a radio to communicate with a wireless network, the radio to transmit a session setup request to setup a communication session, and to receive a session setup response in response to the session setup request, the session setup response including a first Internet Protocol (IP) address and a second IP address assigned to the communication session, and an indication that the first IP address is configured to maintain IP session continuity; and a controller to select to use the first IP address for the communication session, if IP session continuity is to be maintained for the communication session, and to select to use the second IP address for the communication session, if IP session continuity is not to be maintained for the communication session.
摘要:
Methods, systems, and devices for offloading traffic flows without service disruption are disclosed herein. User equipment (UE) is configured to receive an indication that a current packet data network (PDN) connection can be optimized. The current PDN connection is established over a first PDN gateway (PGW). The UE requests connection over a new PDN connection to a same type of service as the current PDN connection without releasing the connection over the first PGW. The UE routes new traffic flows over a second PGW corresponding to the new PDN connection and routes old traffic flows over the first PGW.
摘要:
Embodiments of system and method configurations for device discovery and connection establishment in connection with use of device-to-device (D2D) and proximity-based services are generally described herein. In some examples, an evolved packet core (EPC) of a 3GPP Long Term Evolution or 3GPP Long Term Evolution-Advanced (LTE/LTE-A) network is arranged to assist D2D identification and discovery procedures at user equipment (UEs) connected to the LTE/LTE-A network. Various identification and discovery procedures may be implemented in connection with proximity detection and the establishment of communication times for the establishment of the D2D communication link, between the UEs. Accordingly, the EPC of the LTE/LTE-A network may assist the establishment of a device-to-device communication link between UEs on a wireless network employing a distinct wireless protocol (for example, a direct wireless network connection via a wireless local area network (WLAN) or wireless personal area network (WPAN)).
摘要:
Wireless communication devices may directly communicate within groups of wireless communication devices using Layer-2 communications to implement “push-to-talk” type applications. In one implementation, a method may include generating a floor request signaling message to take control of a communication channel for a group. After transmitting data relating to the communications, a floor release signaling message may be generated and transmitted a number of times.
摘要:
Techniques described herein may provide for device discovery of direct communication paths, to enable direct mode communication, between communication devices. The discovery of the communication paths may be based on identifiers that may be defined at the application level and included in device discovery requests. In one implementation, the identifiers may be SIP-URIs (session initiation protocol (SIP)-uniform resource identifiers (URIs)).
摘要:
Embodiments allow one or more eNBs that become isolated from core network entities (e.g., evolved packet core entities such as mobility management entity, serving gate way, packet data network gateway, and so forth) to form a resilient mode network. Such a network can function in a limited fashion and provide for UE to UE communications within the resilient mode network coverage area. One or more of the eNBs function as an autonomous eNB and provide a subset of core network functions that allow UE to UE communications within the resilient mode network coverage area. Embodiments disclosed herein select which eNB functions as the autonomous eNB and then the other eNBs establish an S1-MME and/or S1-U interface with the autonomous eNB.
摘要:
A communication device may be provided. The communication device may include: a packet generator configured to generate a packet including data for a second communication device and a header including an identifier identifying a communication service for the data and a transmitter configured to transmit the packet via a flow restriction device to the second communication device.