Abstract:
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may establish a connection to a base station for wireless communications with a network that supports vehicle based communications. The UE may identify a boundary time for the base station. The boundary time may be associated with a periodic schedule when UEs connected to the base station and participating in the vehicle based communications over the network perform a disconnect procedure and a reattach procedure. The UE may perform the disconnect procedure and the reattach procedure at the boundary time.
Abstract:
Methods, systems, and devices are described for access class barring (ACB) operations for device-to-device (D2D proximity service communications. An ACB parameter may be defined and assigned to UEs that is associated with discovery or communication operations for normal and high priority user equipments (UEs). The UE may identify a resource for D2D proximity service communications and, when not barred, send a radio resource control (RRC) connection message requesting the available resource. An establishment cause may be defined and included in the RRC connection request message that corresponds to the ACB parameter.
Abstract:
Methods, systems, and devices are describe for signaling protocols for proximity service functions in a wireless communication system. A first wireless device may identify a group identity parameter associated with a multicast transmission of multimedia content. The first wireless device may map the identified group identity parameter to an identification parameter associated with at least one proximity service (ProSe) relay wireless device. The first wireless device may receive the multicast transmission of the multimedia content via the at least one ProSe relay wireless device based on the mapping of the identified group identity parameter to the identification parameter.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided in connection with facilitating secure D2D communications in a LTE based WWAN. In one example, a UE is equipped to send a shared key request using a first non-access stratum (NAS) message to a MME, calculate a first UE key based on a MME-first UE key, an uplink count value, and at least a portion of contextual information, receive a second NAS message from the MME, and calculate a final UE key based at least on the first UE key. In another example, a MME is equipped to receive a NAS message such as the message send by the first UE, calculate a first UE key, receive a message at least indicating successful contact with the second UE, and send a second NAS message to the first UE indicating the successful contact.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided in connection with providing additional security for communication of sensitive information within a LTE based WWAN. In one example, a communications device is equipped to generate a keystream based on a mobility management entity-user equipment (MME-UE) key, a non-access stratum (NAS) message count value, and a contextual string associated with an informational element, and the contextual information, and cryptographically process the informational element using the generated keystream. In such an example, the communications device may be a UE, a MME, etc.
Abstract:
Methods and apparatus are described for refining, e.g., reducing, a paging area corresponding to a user equipment device, e.g., a cellular inactive UE device. Various embodiments are well suited for communications systems in which user equipment devices participate in peer to peer communications networks in which direct user device to user device communications are employed. A user equipment device participating in a peer to peer network transmits discovery signals. A femto base station and/or a cellular active UE device in the local vicinity of the UE device transmitting the peer to peer discovery signal eavesdrops on the peer discovery signaling and detects the presence of the cellular inactive UE device. The detection of the cellular inactive UE device is reported to a MME. The MME determines a paging area corresponding to the detected UE device based on the reported information and the location of the reporting device.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided. In one configuration, the apparatus is a target UE. The target UE communicates an expression of the target UE to a serving entity, receives a page initiated from the serving entity for communicating with an initiator UE, and communicates securely with the initiator UE based at least on the page. In one configuration, the apparatus is a serving entity. The serving entity receives a first expression from a target UE, receives a second expression from an initiator UE, and sends a page to the target UE upon determining that the second expression matches the first expression.
Abstract:
Certain aspects of the present disclosure are generally directed to techniques for selecting a configuration for communication using vehicle to everything (V2X) type communication protocol. Certain aspects provide a method for wireless communication by a user-equipment (UE). The method generally includes determining one or more parameters corresponding to quality of service (QOS) information for communication of data using a V2X communication protocol, reporting the one or more parameters by transmitting a first message, receiving a second message indicating configuration information corresponding to the communication of the data using the V2X communication protocol, and communication the data based on the configuration information.
Abstract:
Methods, systems, and devices for ranging are described. A multi-phase distributed ranging technique includes transmitting and receiving vehicle information messages during a first time interval, where the vehicle information messages include at least a vehicle identifier and resource information. The multi-phase technique further includes transmitting and receiving ranging signals during a second time interval, and determining times of arrival of received ranging signals. A centralized ranging technique includes receiving resource assignments from an access point, transmitting ranging signals according to the resource assignments, and determining times of arrival of received ranging signals.
Abstract:
Certain aspects of the present disclosure provide techniques relating to wireless communications between vehicles. In certain aspects, a method performed by a first vehicle comprises receiving an indication from a second vehicle comprising surrounding information that is indicative of whether a first unknown vehicle is detected by the second vehicle, wherein the first vehicle and the second vehicle are able to communicate wirelessly, and wherein the first unknown vehicle is unable to communicate wirelessly with the first and the second vehicles. The method further comprises controlling movement of the first vehicle based on the indication.