342 results about "Device to device" patented technology

An intelligent traffic management device for optimizing traffic flow at one or more intersections using reinforcement learning, comprising: a central control unit housed in a weatherproof enclosure and mounted on a structural support near an intersection; a sensor interface operatively connected to a variety of multimodal sensors, including at least radar-based vehicle detectors, inductive loop sensors embedded in the road surface, infrared pedestrian detection detectors, and high-resolution optical imaging modules; a powerful embedded computing unit consisting of a multi-core processor and a GPU configured for on-device inference; a reinforcement learning engine embedded in the computing unit, comprising a deep reinforcement learning model trained to map environmental states defined by traffic-related sensor inputs to optimized action policies for traffic light control; a signal actuation module electrically connected to traffic signal controllers, with action policies outputting signal phase durations and transitions in real time; a communications module supporting wireless connectivity and configured for device-to-device communication and cloud synchronization; a policy synchronization module configured to perform federated learning-based updates of model parameters by exchanging gradient weights or distilled traffic state vectors with neighboring intelligent traffic management devices deployed in a traffic network; where the reinforcement learning engine continuously observes traffic state vectors consisting of vehicle counts, average speeds, queue lengths, and pedestrian activity, and dynamically updates the policy to maximize cumulative traffic throughput and minimize average delay.

Various aspects of the techniques, methods and devices described in this disclosure relate generally to achieving coexistence between WLAN and P2P networks, and specifically, to coordinated D2D communications. Some aspects particularly involve extending the capabilities of TWT elements transmitted by APs to support periodic reserved access windows during which D2D-enabled wireless devices are permitted to transmit direct wireless communications. Some other aspects relate to sharing time and frequency resources via CAP TDMA or CAP OFDMA techniques, and specifically, to allocating at least some of the time and frequency resources specifically for D2D communications. Some other aspects relate to periodic coordinated access windows during which APs are scheduled to contend but during which D2D devices are not permitted to contend, and specifically, to scheduling a reserved access window within a periodic coordinated access window during which D2D devices may transmit direct communications to other D2D devices despite the permissions associated with the periodic coordinated access windows.

Disclosed are methods for allocating spectrum by a Mobile Satellite Service (MSS) satellite to a User Equipment (UE). The method includes monitoring, by the MSS satellite, radio spectrum in a coverage area of the MSS satellite, determining a spectrum usage map of the radio spectrum in the coverage area, where the spectrum usage map comprises frequency bands comprising licensed frequency bands and unlicensed frequency bands, and transmitting the spectrum usage map for use by the UE. Related wireless electronic devices are also discussed.

The present application relates to devices and components including apparatus, systems, and methods to configure and use reference signals for positioning in device-to-device communications (e.g., sidelink communications between two UEs). Configuration information can be generated for a device and can indicate sidelink resources in a resource pool configured to be used for a reference signal for positioning. In the time domain, the configuration can be at a slot level or a symbol level. The configured sidelink resources can be indexed in the time domain and the frequency domain. Control information can be transmitted to indicate a next transmission of a reference signal for positioning. This control information can implicitly or explicitly indicate a configured sidelink resource to be used in the next transmission.

A terminal includes a reception unit configured to receive a signal related to positioning in device-to-device direct communication from another terminal; a transmitter configured to transmit a signal based on the signal related to positioning in the device-to-device direct communication to the other terminal; and a control unit configured to perform control to transmit the signal based on the signal related to positioning in the device-to-device direct communication to the other terminal by a certain time point.

The present invention discloses a device-to-device covert communication system assisted by a drone and an intelligent reflecting surface, establishes a drone and intelligent reflecting surface UIRS joint-assisted D2D covert communication model, including communication links between various entities, calculates the average minimum error detection probability and the maximum communication rate; the sender sends a covert signal to the UIRS, and the UIRS forwards it to the receiver. Among them, the UIRS changes the angles of the corresponding incident covert signal and the reflected covert signal through its constituent elements; the spectrum-sharing cellular user sends a cellular signal to the base station, and at the same time the base station sends an interference signal, introducing an uncertainty factor at the receiver of the eavesdropper Willie to achieve the covertness of the UIRS joint-assisted D2D communication link; the eavesdropper Willie monitors whether the UIRS joint-assisted D2D communication link transmits a covert signal; the covertness is measured by the average minimum error detection probability; under the multiple constraints of satisfying the average minimum error detection probability, the cellular communication link outage probability, the transmission power, and the transmission power of the interference signal, etc., the maximum communication rate of the UIRS joint-assisted D2D communication link is obtained, and the communication rate of the system is effectively improved under the joint assistance of the drone and the intelligent reflecting surface UIRS.

The invention discloses a DMA data transmission method and device, and relates to the technical field of computers. The method comprises the steps of obtaining a DMA descriptor from a memory of a first PCIe device; reading the data to be transmitted from the memory of the first PCIe device based on the DMA descriptor; and transmitting the to-be-transmitted data to a target address corresponding to the DMA descriptor through the PCIe message so as to realize data transmission from the first PCIe device to the second PCIe device. According to the data transmission method and device, the DMA descriptor is stored in the memory of the first PCIe device, a PCIe message does not need to be sent to the host to obtain / access the DMA descriptor stored in the memory of the host, the bandwidth from the PCIe devices to the host is not occupied, 100% data transmission from the PCIe devices to the PCIe devices is achieved, and therefore the performance of the whole system is improved.

A wireless communication network is described, which includes one or more relay devices and one or more user devices, UEs. A relay devices provides a first bidirectional link having first relay resources, and a second bidirectional link having second relay resources, the first and second bidirectional links using a first interface for a communication with a radio access network, RAN, of the wireless communication network, e.g., the Uu interface. A UE is to perform a direct communication with a network entity of the wireless communication network via the relay device on one or more the first relay resources or on one more of the first and second relay resources using a second interface for a device-to-device, D2D, or sidelink, SL, communication in the wireless communication network, e.g., the PC5 interface.

A terminal includes: a control unit configured to perform a process related to transmission in a case where one or more of feedback channels in a first carrier overlap in at least a time domain with either a channel or a signal in a second carrier in a device to device direct communication in which carrier aggregation is applied; and a transmission unit configured to transmit at least one of: the one or more of the feedback channels; or the channel or the signal. The control unit performs prioritization regarding which channel or signal is to be prioritized, and performs at least one of controlling of transmission power or stopping of transmission, based on the prioritization.

Methods, systems, and devices for wireless communication are described. A communication device supports sidelink communication, including device-to-device (D2D) communication and vehicle-based communication. The communication device receives a discontinuous transmission (DTX) configuration for a sidelink connection between the communication device and another device from the other device. Based on the received DTX configuration, the communication device determines a discontinuous reception (DRX) configuration and transmits the determined DRX configuration to the other device. The devices experience power savings and other results based on the DTX configuration or the DRX configuration.

Discontinuous transmission and discontinuous reception configurations for sidelink communications are disclosed. Methods, systems, and devices for wireless communication are described. A communication device supports sidelink communications, including device-to-device (D2D) communications and vehicle-based communications. The communication device receives, from another device, a discontinuous transmission (DTX) configuration for a sidelink connection between the communication device and the other device. Based on the received DTX configuration, the communication device determines a discontinuous reception (DRX) configuration and transmits the determined DRX configuration to the other device. These devices experience power savings and other results according to a DTX configuration or a DRX configuration.

A method for setting up a multiple radio access technology (multi-RAT) device-to-device (D2D) communication is disclosed. An application function (AF) in a wireless transmit / receive unit (WTRU) may identify a group of multiple radio access technology (multi-RAT) capable WTRUs to a policy control function (PCF), wherein one or more multi-RAT capable WTRUs of the group of multi-RAT capable WTRUs register as having enhanced device-to-device (ED2D) functionality. The AF may select a multi-RAT capable WTRU from the group of multi-RAT capable WTRUs having ED2D functionality, as a relay for extended D2D operation. The device with ED2D function will act as Relay for ED2D (RED2D). The PCF may then reconfigure the RED2D with group related information. The RED2D may then configure D2D communication among the group of multi-RAT capable WTRUs.

Provided are D2D wireless communication methods and UEs therefor. In one embodiment, the D2D wireless communication method performed by a UE includes continuing D2D transmission by using a resource from a resource pool allocated for mode 2 operation when switching from mode 1 operation to mode 2 operation. In another embodiment, the D2D wireless communication method performed by a UE includes performing D2D transmission by using a resource from a resource pool allocated for mode 2 operation, wherein the resource pool is indicated by a dedicated RRC signaling transmitted by an eNB, a SIB transmitted by an eNB, a PD2DSCH transmitted by other UE(s), and / or pre-configuration, and the dedicated RRC signaling, the SIB, the PD2DSCH and the pre-configuration are in descending order in priority when determining the resource pool.

The present disclosure relates to systems, apparatuses, methods, and non-transitory computer-readable media for determining, by a first wireless communication device, configuration for a SL positioning-related transmission and communicating, by the first wireless communication device with a second wireless communication device, the SL positioning-related transmission, wherein the SL positioning-related transmission includes at least one of a Sidelink Positioning Reference Signal (SL-PRS), a Physical Shared Control Channel (PSCCH) corresponding to the SL PRS, or a Demodulation Reference Signal (DMRS).

A method and apparatus are described for supporting a two-stage device-to-device (D2D) discovery using a D2D interworking function (IWF). A D2D IWF component may be configured to perform mapping between an application running on an application server and a third generation partnership project (3GPP) network, and provide a set of application programming interfaces (APIs) to allow discovery to be provided as a service to D2D applications. An application identifier may be mapped to a 3GPP identifier. Further, a method and apparatus are described for performing client-server discovery. A first wireless transmit / receive unit (WTRU) may be configured for a listen-only operation, and a second WTRU may be configured to transmit beacons. The first and second WTRUs may perform a radio access network (RAN) discovery procedure at an access stratum (AS) layer. A method and apparatus for performing charging for D2D service using a D2D IWF are also described.

The present invention relates to methods and apparatus for achieving frequency, phase and time of day synchronization in wireless systems. An exemplary method of operating a first wireless base station in a first network in accordance with an embodiment of the present invention comprises the steps of: (i) receiving, at the first wireless base station, a first message; (ii) in response to receiving the first message entering, by the first wireless base station, into a first mode of operation; and (iii) while operating in the first mode of operation, obtaining, by the first wireless base station, synchronization information from a first user equipment device using over the air device to device communications, the synchronization information including time synchronization information.

Disclosed are a method and a device for device-to-device communication in a wireless communication system. The method according to one embodiment of the present disclosure may comprise the steps of: receiving, by a first device, information related to a time and / or frequency resource set from a base station; and transmitting, by the first device, a first transmission to a second device in a time and / or frequency resource selected from the time and / or frequency resource set.

A terminal includes a transmission unit configured to transmit a signal for positioning in device-to-device direct communication to another terminal; a reception unit configured to receive a result of a measurement of the signal for positioning from the other terminal; and a control unit configured to assume that the result of the measurement is a difference between a reception timing of the signal for positioning in the other terminal and a reference time, wherein the control unit determines the reference time based on a synchronization source.

Aspects relate to estimating occupancy of a wireless communication channel. A first user equipment (e.g., a first sidelink device) may transmit to a second user equipment (e.g., a second sidelink device) via one or more subchannels allocated for device-to-device communication. The second user equipment may also transmit to the first user equipment via one or more of the subchannels. To mitigate interference on the subchannels, the second user equipment may measure received signal strength on the subchannels to estimate the occupancy of the subchannels (e.g., by calculating a channel busy ratio). In addition, the second user equipment may account for signal leakage from a first subchannel (e.g., on which the first user equipment is transmitting data) onto a second subchannel. As a result, subchannels that may otherwise be indicated as occupied due to leakage may instead by indicated as unoccupied, thereby improving the accuracy of the channel occupancy estimation.

A method for allocating resources for device-to-device transmission between two or more user equipment (UEs) includes transmitting, from a first UE to a second UE, a resource allocation configuration for device-to-device communications. A resource request for a device-to-device transmission is received from the second UE. In response to the resource request, a resource for the device-to-device transmission is selected at the first UE. A resource grant is transmitted to the second UE. The resource grant identifies the selected resource. A device-to-device transmission is received from the second UE over the selected resource.

The methods, devices, and systems discussed herein utilize a 2-stage Sidelink Control Information (SCI) design when a forwarding user equipment device (UE) forwards the time-frequency location of communication resources that (1) have been reserved by another UE, or (2) are available for the receiving UE to use for device-to-device (D2D) data transmissions. In some examples, the 1st and 2nd stages of the SCI are required to decode the data channel. In these examples, part of the SCI is in the 1st stage, and the remaining part is in the 2nd stage. Thus, a UE that receives the 2-stage SCI decodes the 1st stage for sensing whether the associated data channel is being used. The 2nd stage has the remaining relevant SCI required to demodulate and decode the same associated data channel.

The present disclosure relates to systems, apparatuses, methods, and non-transitory computer-readable media for receiving, by a first wireless communication device from a higher layer, Sidelink Positioning Reference Signal (SL PRS) resource configuration for communicating SL PRS in a time-domain unit and sending, by the first wireless communication device, the SL PRS according to the SL PRS resource configuration to a second wireless communication device.

User equipment in close proximity may transfer data and control information. For example, the user equipment may exchange data or data sets between each other. Each user equipment can receive and transmit data using radio access technologies. A group of user equipments may include active user equipment and passive user equipment. Active user equipment connects with one or more base stations and transfers data on a wireless communication network via the base station. The active user equipment may communicate with other active user equipment and passive user equipment. Passive user equipment may not connect to any base station and / or the wireless communication network and may communicate with other passive user equipment and active user equipment (e.g., via a sidelink, peer-to-peer, or device-to-device channel).

An information processing device acquires a total number of second mobile bodies and third mobile bodies within a predetermined area, the second mobile bodies relays a data block between a first mobile body and a predetermined server through device-to-device communication with the first mobile body and through first wireless communication with the predetermined server, and the third mobile bodies relays the data block between the first mobile body and the second mobile bodies through the device-to-device communication. When the total number of second mobile bodies and third mobile bodies is less than a predetermined threshold value, the information processing device instructs either the second mobile bodies or the first mobile body to appoint a different mobile body as a third mobile body by transmitting the data block to the different mobile body through the device-to-device communication.

A wireless communication network is described that includes one or more relay devices and one or more user equipments (UEs). A relay device provides a first bi-directional link comprising a first relay resource and a second bi-directional link comprising a second relay resource, the first bi-directional link and the second bi-directional link communicating with a radio access network (RAN) of a wireless communication network using a first interface, such as a Uu interface. The UE is configured to use a second interface, such as a PC5 interface, for device-to-device (D2D) communication or sidelink (SL) communication in a wireless communication network by a relay device on one or more first relay resources or on one or more of the first relay resource and the second relay resource, direct communication with a network entity of a wireless communication network is performed.

Disclosed are a method and apparatus for device-to-device communication in a wireless communication system. The method according to an embodiment of the present disclosure may comprise the steps of: receiving, from a base station by a first device, information regarding a resource area available for communication between the first device and a second device; transmitting, to the second device by the first device, a first transmission including information regarding a valid resource area determined within the available resource area; and receiving, from the second device by the first device, a second transmission as a response to the first transmission on the basis of the valid resource area.

Feedback of a plurality of pieces of SL-HARQ-ACK in sidelink communication is controlled. A communication device (terminal device 2) includes a reception unit (205), a transmission unit (207), and a control unit (203). The reception unit (205) receives a sidelink shared channel for sidelink communication that is device-to-device communication. The transmission unit (207) transmits a first sidelink feedback channel and a second sidelink feedback channel for transmitting response information of the sidelink shared channel. The control unit (203) performs control to select the first sidelink feedback channel and the second sidelink feedback channel, and to cause the transmission unit to transmit the selected result.

Disclosed are a method and an apparatus for device-to-device communication in a wireless communication system. A method according to an embodiment of the present disclosure may comprise the steps of: transmitting, by a first device, a first transmission to a second device; and receiving, by the first device, a second transmission from the second device in response to the first transmission.

One disclosure of the present specification provides a method by which remote UE performs communication. The method comprises the steps of: receiving a discovery message from relay UE, the discovery message comprising information about a first base station serving the relay UE; determining, on the basis of the information about the first base station, whether the first base station and a second base station serving remote UE are the same; and selecting the relay UE for PC5 (device-to-device communication) connection, on the basis that the first base station and the second base station are the same.

Examples described herein relate to a network interface comprising physical medium dependent (PMD) circuitry, the PMD circuitry to during link training of at least one lane consistent with IEEE 802.3, exit to TIME_OUT state during TRAIN_LOCAL state based on consideration of expiration of a wait timer, loss of local_tf_lock state, and loss of remote_tf_lock state. In some examples, during link training for at least one lane consistent with IEEE 802.3, the PMD circuitry is to exit to TIME_OUT state during TRAIN_REMOTE state based on consideration of expiration of a wait timer, loss of local_tf_lock state, and loss of remote_tf_lock state. In some examples, link training consistent with IEEE 802.3 comprises performance of the PMD control function in Section 162.8.11 of IEEE 802.3ck.