Abstract:
Various aspects of an approach for acquiring sequences such as balanced Hamming weight preamble sequences are described herein. The approach provides for the acquisition of preamble sequences base on energy accumulation. The approach includes creating a plurality of synchronization hypotheses, with each hypothesis being created based on energies sampled at a first location and a second location in a plurality of locations associated with a sequence of transmitted symbols; calculating a plurality of metrics based on the plurality of synchronization hypotheses, wherein each metric is associated with a hypothesis; selecting, as a candidate, one hypothesis from the plurality of synchronization hypotheses including a maximum associated metric. The approach may further include determining a boundary in the sequence of transmitted symbols based on a correlation property of the sequence of transmitted symbols. The second location includes a predetermined offset from the first location configured to provide enhanced interference immunity.
Abstract:
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify the UE is associated with a vehicle, such as being within the vehicle, or has established connectivity with the vehicle. The UE may transmit location information of the vehicle and one or more vehicle parameters to a network entity, such as a roadside unit (RSU) or a base station. The network entity may identify route data, safety data, or both. The network entity may transmit the route data, the safety data, or both to the UE.
Abstract:
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a first safety message associated with the UE. The first safety message may be transmitted according to a first periodicity of a set of transmission periodicities for safety message transmissions. The UE may select a second periodicity of the set of transmission periodicities based on one or more environmental conditions associated with the UE. The UE may transmit a second safety message associated with the UE according to the second periodicity of the set of transmission periodicities based at least in part on selecting the second periodicity. The one or more environmental conditions may include topological information, road information, or visibility information. The UE may select the second periodicity based on one or more parameters associated with the UE.
Abstract:
This disclosure provides systems, methods, and devices for wireless communication that support a sensing charging subscription. In a first aspect, a method of wireless communication includes receiving first location information associated with a first mobile entity. The method also includes transmitting an alert based on the first location information and path information configured to model multiple paths associated with an intersection region. The multiple paths include a first path that is curved. The path information defines multiple line segments to model the first path. Other aspects and features are also claimed and described.
Abstract:
This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for wireless communication. In one aspect of the disclosure, a method for wireless communication by a user equipment (UE) includes monitoring for one or more vehicle-to-everything (V2X) messages based on a first monitoring interval, and determining a second monitoring interval based on a UE characteristic, an environment characteristic, or a combination thereof. The method may also include monitoring for the one or more V2X messages based on the second monitoring interval. Other aspects and features are also claimed and described.
Abstract:
Methods, systems, and devices for wireless communications are described in which a vulnerable road user (VRU) user equipment (UE) indicates to a user whether a current position accuracy is sufficient or insufficient for approaching vehicles to determine if they present a hazard to the VRU. The position accuracy may be based on an accuracy threshold that is configured at the UE, such as by a serving base station or a road side unit (RSU). The accuracy threshold may be configured via common or dedicated signaling, through application-layer signaling, or may be pre-configured in the UE. When the VRU UE position accuracy exceeds the specified threshold for a particular interval of time, the UE may inform the user that approaching vehicles will be unable to determine their location with enough accuracy to take evasive maneuvers.
Abstract:
Multiple user equipments (UEs) may initiate independent ranging sessions at nearly the same time and location and which may interfere with each other. A UE that receives multiple initial messages for ranging determines if there is temporal separation between the ranging sessions. The UE may further determine if there is geographic separation between the ranging sessions, e.g., the initiating UEs are separated. If separation is lacking, the UE separates available ranging signal properties, such as frequency bandwidth, timing instances, and identifiers, and communicates different sets of ranging signal properties to each initiating UE. The multiple ranging sessions may be performed using the different sets of ranging signal properties with less risk of interference.
Abstract:
Methods, systems, and devices for wireless communications are described. In some systems, a vehicle may identify a set of zones of the vehicle, each zone including a number of components connected to a wireless in-vehicle network of the vehicle. A scheduler of the vehicle may associate a different set of frequency resources to each zone of the vehicle and may allocate frequency resources to each component of the vehicle from the set of frequency resources associated with the zone in which the component is located. The scheduler may associate the different sets of frequency resources with the different zones of the vehicle such that two zones that are located at opposite sides or ends of the vehicle may be associated with sets of frequency resources that are spaced in frequency from each other by a maximum frequency spacing.
Abstract:
Disclosed are techniques for performing wireless communication. In some aspects, a wireless communication device may identify a plurality of sidelink positioning anchor devices. Based on one or more parameters associated with each of the plurality of sidelink positioning anchor devices, the wireless communication device may associate with one or more sidelink positioning anchor devices from the plurality of sidelink positioning anchor devices.
Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive, from one or more additional UEs, one or more indicators corresponding to one or more resource reservations. Accordingly, the UE may transmit data, to a second UE, on a sidelink channel, with at least one resource reservation, of the one or more resource reservations, indicated within a control element transmitted with the data. For example, the control element may include a list or a bitmap indicating the at least one resource reservation. Numerous other aspects are described.