Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may receive broadcast information related to a second UE from a third UE, relay the broadcast information and identifier information to a set of UEs, determine whether each UE in the set of UEs has received the broadcast information based on whether the identifier information is received from each UE in the set of UEs, and refrain from relaying the broadcast information upon determining that each UE in the set of UEs has received the broadcast information. In another aspect, the apparatus may receive broadcast information related to a second UE and a tag associated with the broadcast information from a third UE, relay the tag without the broadcast information to a set of UEs, receive a request for broadcast information from a third UE in the set of UEs, and relay the broadcast information to the third UE. In an aspect, the first, second and third UEs may be the same UE. In another aspect, the second and third UEs but not the first UE may be the same UE.
Abstract:
Techniques disclosed herein provide for enhanced LTE Positioning Protocol (LPP) Reliable Transport where the receiver of an LPP message sends a non-piggybacked acknowledgement. An example method for executing on a mobile device a protocol session with a location server includes sending a first protocol session message associated with a first protocol session to the location server, entering a wait-for-acknowledgement state in which uplink transmissions from the mobile device to the location server are suspended while waiting for an acknowledgement from the location server in response to the first protocol session message, receiving a second protocol session message associated with a second protocol session which is not an acknowledgement to the first protocol session message but includes information requested in the first protocol session message; exiting the wait-for-acknowledgement state responsive to receiving the second protocol session message; and performing an action using the information received in the second protocol session message.
Abstract:
Methods, apparatuses and/or articles of manufacture, which may be employed in a mobile device and/or in a location server, enable acquisition assistance at the mobile device. In at least one implementation, which is not intended to limit claimed subject matter, acquisition assistance may include expected Doppler frequency shift and expected code phase in the case of a particular Global Navigation Satellite System (GNSS) satellite vehicle, as well as a search window for each of these, and a confidence value. The confidence value may indicate the likelihood of detecting signals from the satellite vehicle at the current expected location of the mobile device and within the given search windows and may enable one or more of faster location estimation, reduced battery consumption, and detection of weaker satellite signals.
Abstract:
Techniques for routing an emergency call originated by a mobile station via a femto access point (FAP) in a wireless network and for locating the mobile station are described. In an aspect, the emergency call may be routed to an appropriate emergency center based on location information for the FAP. In one design, the location information for the FAP may include a macro cell identity (ID) and/or a macro Mobile Switching Center (MSC) ID determined based on the FAP location. The macro cell ID and/or the macro MSC ID may be assigned to the FAP and used to access a database, which may store routing information for emergency centers versus cell IDs and MSC IDs. In another design, the location information for the FAP may include a location estimate for the FAP. The location estimate may be used to access a geographic database, which may store routing information for emergency centers for different geographic areas.
Abstract:
A user equipment (UE) communicates with remote endpoints by accessing a space vehicle (SV) in a store and forward (S&F) mode when the SV has no feeder link to a network. The SV includes RAN and CN capability to enable the UE to communicate with an on board proxy. The UE sends mobile originated voice and data to the remote endpoints via the proxy and a second proxy in an S&F center (SFC) and similarly receives mobile terminated data from the remote endpoints. Secure access by the UE to the SV and by the second proxy to a ground network is enabled by providing, to the SV and SFC, UE security key data derived non-reversibly from a security key on the UE USIM. The derived security key data avoids exposing the USIM security key and enables SV access without pre-subscription to an SV operator.
Abstract:
Techniques are provided for increasing a number of measurement gaps for positioning measurements. An example method for increasing a number of measurement gaps for positioning measurements includes: receiving a request for measurement gaps from a user equipment; and sending an indication to relax mobility measurements to the user equipment, wherein the indication to relax the mobility measurements includes a mobility measurement periodicity value for relaxed mobility measurements.
Abstract:
A mobile device is disclosed. The mobile device may receive one or more wireless local area network (WLAN) signals. The mobile device may determine Channel State Information (CSI) data from the one or more WLAN signals. The mobile device may determine one or more environmental characteristics associated with an environment of the mobile device based on the CSI data. The mobile device may send information indicative of the one or more environmental characteristics to a location server (LS), or determine a position of the mobile device based at least in part on the one or more environmental characteristics, or any combination thereof.
Abstract:
A method determines whether a user equipment (UE) has transitioned between an international area and a national area. The method triggers PLMN selection in response to the UE having transitioned between the international area and the national area.
Abstract:
Techniques are described for supporting secure sidelink communication and secure sidelink positioning for user equipments (UEs). A server may configure each UE with a private cipher key, a random value and derived cipher keys. Two UEs may exchange their random values and may each use their private cipher key and a received random value to determine a derived cipher key already configured in the other UE. The two derived cipher keys now known to both UEs can enable secure communication and positioning. In a degenerate case, a Type B UE is configured with a random value and a derived cipher key which can be determined by a Type A UE configured with a private cipher key using the random value. The technique can be extended to secure communication and positioning for a group of UEs.
Abstract:
A Registration Area (RA) supporting UE satellite access to a serving PLMN may correspond to a geodetic area (e.g. a circle) and may be determined by a network node (e.g. AMF) based on a current geodetic location of the UE. The UE may access a radio cell supported by a satellite for a serving PLMN. The UE may determine whether the radio cell provides coverage for the RA, e.g., based on whether an updated geodetic location of the UE is inside the RA or based on whether a geodetic coverage area of the radio cell covers at least part of the RA. The UE may perform a Registration with the serving PLMN via the radio cell when the radio cell is determined to not provide coverage for the RA. The serving PLMN may page the UE, when idle, using radio cells whose coverage includes at least part of the RA.