Abstract: A user equipment (UE) may experience poor communication with a network access device, and the network access device may configure the UE to connect to, and route communications through, one or more relay nodes (e.g., which may be another UE, a network operator-deployed relay, etc.). Techniques are described whereby these relay nodes may autonomously form a wireless backhaul network. Sequential implementations are considered such that the size of the wireless backhaul network may scale efficiently. In some examples, the wireless backhaul network may form by reusing existing connectivity establishment procedures. Importantly, the proposed techniques enable a relay to possess (e.g., be configured with) functionality that may traditionally be associated with a UE, base station, and gateway. Such multi-faceted functionality may enable the described sequential formation of wireless backhaul networks with tree topology.

Abstract: A wireless relay device may receive a request indicating that a wireless device has one or more delay-tolerant messages to be forwarded to a network. The wireless relay device may send a response message to the wireless device indicative of an estimated time to network contact. The wireless relay device then receives and caches the delay-tolerant messages to be forwarded. The wireless relay device may forward at least one of the one or more delay-tolerant messages.

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device communicating critical or latency sensitive information may determine that a clear channel assessment (CCA) has failed in a shared radio frequency (RF) spectrum band. The device may then transmit a silencing signal in a managed RF spectrum band, and switch to communicating in the managed band from transmitting in the shared band. Other wireless devices communicating with the first device may receive the silencing signal and may also switch to the managed RF spectrum band. Based on the silencing signal, user equipments (UEs) not associated with the critical communications, but also operating in the managed band, may suspend transmissions in the managed band (e.g., uplink (UL) data), although they may still receive transmissions in the managed band (e.g., downlink (DL) data).

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for discovering a controller function for wireless backhaul using cellular radio access technology (RAT) such as communications systems operating according to new radio (NR) technologies. For example, such a method may include connecting to a parent relay that provides connectivity to a controller function (CF) of a network, receiving, from the parent relay, information regarding at least one of: the CF or a radio access network (RAN) area covered by the CF, obtaining an identifier of the CF using the information, and connecting to the CF using the identifier.

Abstract: Systems and methods are disclosed for using wireless relays to create path diversity in rebroadcasting data in wireless networks with latency sensitive applications. A first wireless communication device receives a data signal, the data signal being transmitted on a first frequency resource from a second wireless communication device to a third wireless communication device. The first wireless communication device receives an ACK/NACK signal being transmitted from the third wireless communication device to the second wireless communication device. The first wireless communication device determines if the ACK/NACK signal is a NACK signal, and if so transmits the data signal at a second frequency resource during a third time period to the third wireless communication device.

Abstract: Methods and apparatus that facilitate handover related measurements and decision making in a communications system including user equipment (UE) devices, a macro base station and femto base stations (femtocells) are described. In some embodiments a UE device transmits pilots along with identification information using UE device selected transmission resources from a set of recurring UE pilot transmission resources dedicated by a macro base station for UE pilot signal and related device information transmission purposes. Femto base stations measure the UE transmitted pilot signals and report the signal strength measurement results and corresponding device identifiers to a handoff decision control entity, e.g., an eNodeB or control node, which makes handover decisions. By relying on UE transmitted pilots measured by multiple base stations, e.g., femto base stations, the need for femto cells to transmit pilots can be reduced while well informed UE handoff decisions still being possible.

Abstract: In an ad hoc peer-to-peer type network during peer discovery, information relating to users of various devices is broadcast to other devices in the network, which can compromise privacy of the users. Instead of announcing a public identifier that might be known by a multitude of individuals, the user device announces a private identifier that might be known to, or determined by, a select few individuals. The individuals selected can be given a key to determine the private identifier associated with a public identifier, or vice versa, wherein that key can have a validity range or a period of time, after which the key expires. Prior to the expiration of the key, the selected individuals, through their respective devices, can detect a corresponding user and/or device by the current private identifier being announced, thus mitigating the number of people that are aware of the user's presence.

Abstract: Methods, systems, and devices are described for improving uplink communications of a machine type communication (MTC) device by relaying communications through a first device, such as a mobile device or user equipment (UE), to a second device, such as a base station or Evolved-NodeB (eNB). In an embodiment, a relay device may participate in a discovery process to discover an MTC device. The relay device may then receive data from the discovered MTC device, such as through a peer-to-peer link, and relay the data to a base station through a second communication link. In another embodiment, an MTC device may participate in a discovery process with a first device, such as a relay UE. The MTC device may then transmit data to the relay UE for relaying to a second device, such as a base station. In either case, the MTC device may receive data directly from the base station.

Abstract: Methods, systems, and devices for wireless communication are described. In one method, a wireless device may securely communicate with a local area network (LAN), via a first connection with a source access node (AN), based on a first security key. The wireless device may perform a handover from the source AN to a target AN. The wireless device may derive a second security key based on the first security key, and securely communicate with the LAN, via a second connection with the target AN, based on the second security key and a restriction policy for the second security key. The wireless device may perform an authentication procedure to obtain a third security key, which may not be subject to the restriction policy, and securely communicate with the LAN, via the second connection with the target AN, based on the third security key.

Abstract: Methods, systems, and devices for wireless communication are described. In one method, a source access node (AN) of a local area network (LAN) may receive, over a first connection, a set of fast transition (FT) parameters pertaining to authentication. The source AN may cache the set of FT parameters, and forward the set of FT parameters to a target AN of the LAN during a handover procedure. The source AN may receive, from the target AN, a set of security parameters associated with secure communication between the wireless device and the target AN, the set of security parameters based at least in part on the set of FT parameters. The source AN may subsequently transmit to the wireless device, over the first connection, a command to perform a handover to the target AN, the command including the set of security parameters.

Abstract: Methods, systems, and devices for wireless communication are described. In one method, a wireless device may establish a connection with an access node (AN) of a local area network (LAN). The wireless device may also determine to perform an authentication. The wireless device may further receive an indication, as part of the authentication, of a protocol end point for the authentication as being a non-access stratum (NAS) layer or a radio resource control (RRC) layer. In another method, an AN may establish a connection with a wireless device. The AN may determine the wireless device determined to perform an authentication with an authenticator included in the AN. The AN may further indicate, as part of the authentication, a protocol end point for the authentication as being the NAS layer or the RRC layer.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with enabling timing source selection and deselection in a decentralized manner for distributed D2D synchronization in densely populated communications systems. In an example, a communications device, functioning in a non-timing source (TS) mode, is equipped to receive a request for timing information during a synchronization channel. The communications device may further be equipped to determine whether to switch to a TS mode based on a selection utility metric value. In another example, a communications device, functioning in a TS mode, is equipped to transmit a TIB during a synchronization channel, and determine whether to switch to a non-TS mode based on a deselection utility metric value. In the TS mode, the UE is configured to transmit a TIB, while in the non-TS mode the UE is configured not to transmit the TIB.

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. The apparatus receives a policy containing information on filtering and processing of discovery messages over a wireless interface. The policy may be received from a cellular network or from a network server. The apparatus determines a set of filtering rules and a set of processing rules based on the policy. The apparatus may store the set of filtering rules and the set of processing rules. Upon receiving a discovery message on a device-to-device communication channel, the apparatus applies the set of filtering rules to the discovery message. The device-to-device communication channel may be a wireless communication channel. The apparatus may apply the set of processing rules to the discovery message in response to the discovery message passing the set of filtering rules. The apparatus may rebroadcast the processed discovery message.

Abstract: A wireless relay device may receive a request indicating that a wireless device has one or more delay-tolerant messages to be forwarded to a network. The wireless relay device may send a response message to the wireless device indicative of an estimated time to network contact. The wireless relay device then receives and caches the delay-tolerant messages to be forwarded. The wireless relay device may forward at least one of the one or more delay-tolerant messages.

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes transmitting, to a wireless communication device, an indicator of current values of time and location obtained by the UE; receiving, from the wireless communication device, measurement data acquired at the wireless communication device and an acknowledgement of the indicator of the current values of time and location; and forwarding the measurement data and the acknowledgement of the indicator of the current values of time and location to a data collector. A method for wireless communication at a wireless communication device includes receiving, from a UE, an indicator of current values of time and location; and transmitting, to the UE, measurement data and an acknowledgement of the indicator of the current values of time and location.

Abstract: Methods, systems, and devices for wireless communication are described. A serving base station may determine a handover loss metric associated with a UE that is a candidate for handover. The handover loss metric may be based on connection parameters associated with the serving base station and a target base station, respectively. The serving base station may identify, based on the handover loss metric, a type of handover procedure to perform. The serving base station may perform the handover procedure of the UE to the target base station according to the identified handover type.

Abstract: Techniques are described for wireless communication. One method includes monitoring a dynamic connection parameter associated with a Transmission Control Protocol (TCP) connection between a mobile device and an end device; identifying a TCP (acknowledgement) ACK message comprising a current receive window size; determining an updated receive window size based at least in part on the monitored dynamic connection parameter and the current receive window size; and transmitting, to the end device, the TCP ACK message comprising the updated receive window size.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may establish connectivity to a local area network using cellular radio access technology (RAT). The UE may establish a signaling radio link with a cellular access node (AN) via a cellular RAT. The UE may transmit a connectivity request to a network node via the signaling radio link. The connectivity request may specify a connectivity type for establishing connectivity to a LAN. Based at least in part on an acceptance of the connectivity request, the UE may establish a data radio link with the cellular AN. In an example, the acceptance of the connectivity request may include at least one parameter for configuring the connectivity to the LAN. The UE may then establish a data flow for exchanging data link layer packets with the LAN via the data radio link.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may establish a packet data network (PDN)-connectivity session to a PDN using a cellular radio access technology (RAT) and migrate the PDN-connectivity session from a source access node (AN) to a target AN. Migration may initiate when a decision to perform a handover is made. The target AN may receive a network address and information about a first data radio link established between the UE and source AN. The target AN may establish a second data radio link with the UE based at least in part on the first data radio link information, and may transmit, to the PDN, a path update including the network address and an updated path via the target AN. In some cases, the target AN may forward packets between the UE and the PDN via the second data radio link.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may act as a relay device and receive a message from a source device. The message may be a broadcast message and may include a service type indicator. The UE may identify a capability configuration for the UE that is associated with the UE communicating via a first air interface with the source device and at least one other air interface. The UE may establish a connection to the source device on the air interface based on the capability configuration and the service type indicator.