1055 results about "Unicast" patented technology

The invention discloses a PCIe switch multicast processing system and method giving consideration to efficiency and resources, and the system comprises a unicast control module which is used for receiving the target port information of a unicast TLP packet, a TLP indication signal, TLP header information and TLP load data, and transmitting a unicast request; the multicast control module is used for receiving a target port list of a multicast TLP packet, a TLP indication signal, TLP header information and TLP load data, and sending a multicast request; the target port arbitration module is used for receiving a unicast request and a multicast request, and sending a request packet corresponding to the unicast request or the multicast request to the sending cache module; and the sending cache module is used for receiving the authorized unicast TLP packet or multicast TLP packet, caching the unicast TLP packet or multicast TLP packet, and sending and outputting the unicast TLP packet or multicast TLP packet to the egress end of the target port. According to the invention, the processing of the multicast packet is centralized at the ingress end of the PCIe port, the unicast packet and the multicast packet are separately processed, meanwhile, two parallel processing channels are opened up in the multicast control module, and the copying of the multicast packet is realized through a roll back FIFO read-write pointer mode, so that the design is simplified, the resources are saved, and the efficiency is improved.

The disclosure relates to methods, devices, and systems for wireless communications. In some wireless communications systems, a base station may transmit a multicast message to a group of user equipment (UEs), and the UEs may provide feedback for the multicast message. In some implementations, the base station may configure the UEs to transmit feedback for multicast messages. In some example, the UEs may transmit group-negative acknowledgment (NACK) feedback information for multicast messages that are not successfully received at the UEs. In some other examples, each UE may be configured with UE-specific uplink control channel resources for transmitting hybrid automatic repeat request (HARQ) feedback for a multicast message. In some implementations, a UE may support feedback for both unicast and multicast messages. The semi-static codebook for unicast, multicast, or both may account for whether the UE is capable of concurrently receiving unicast and multicast messages in a slot.

This disclosure relates to embodiments New Radio (NR) vehicle-to-everything (V2X) communication. Some of embodiments generate system information block (SIB) messages having configurations for V2X communication modes, and transmit the SIB messages to a user equipment (UE). V2X communication modes include unicast, groupcast and broadcast modes. An example configuration includes a sidelink communication using a V2X communication mode.

A method for acquiring a channel state information (CSI) report is performed by a first terminal. The method includes: receiving a CSI report request sent by a second terminal, wherein a unicast connection is established between the first terminal and the second terminal; receiving configuration information sent by the second terminal; determining a target frequency band in a plurality of frequency bands; and sending a CSI report of the target frequency band to the second terminal.

Methods, systems, and devices may assist in broadcast, multicast, or unicast on sidelink for 5G eV2X. The following mechanisms for broadcast, multicast, or unicast on sidelink for Vehicle to everything (V2X). Broadcast on sidelink may include methods, systems, or devices for broadcast occasions or monitoring window. Multicast on sidelink may include methods, systems, or devices for multicast occasions or group ID. Unicast on sidelink may include methods, systems, or devices for unicast occasions, UE ID, transmitter initiated transmission, or receiver initiated. Methods, systems, or devices may use communication occasions for platooning.

A method performed by a wireless transmit / receive unit (WTRU) implemented in a first unmanned aerial vehicle (UAV1) includes registering detect and avoid (DAA) capability in a registration message transmitted by the first UAV to an unmanned aerial system (UAS) service supplier (USS), detecting a flight path conflict with a second UAV (UAV2), selecting a unicast or broadcast communication mode with the UAV2, transmitting to the UAV2 the DAA capability of the UAV1 and a deconfliction message based on the selected communication mode, and avoiding a collision by executing a trajectory correction.

The invention discloses an optimal service discovery method based on explicit multicast assistance, a medium and equipment. The method comprises the steps that a user side obtains an IP address list of a target server through DNS query and caches the IP address list; based on the real-time network topology, generating a shortest path tree from a user side to all target servers by using a Dijkstra algorithm; an explicit multicast message with a head carrying a target IP list is constructed, and the intermediate router splits the message into unicast or sub-multicast messages according to a next-hop interface; and the user side determines the optimal server by monitoring the first effective response message. According to the method, traditional multicast addresses are replaced by explicit multicast, address resources are saved, network repeated traffic is reduced, meanwhile, dynamic path tree optimization and an intelligent message splitting mechanism are combined, service discovery delay is remarkably shortened, the method is suitable for high-concurrency scenes such as a distributed CDN, the Internet of Things and video live broadcast, bandwidth consumption is effectively reduced, and service reliability is improved.

The disclosure relates to apparatus and method for supporting Hybrid Automatic Repeat request (HARQ)-Acknowledgement (ACK) feedback for multicast service. In some aspects, a user equipment (UE) device may comprise at least one antenna; at least one radio, coupled to the at least one antenna and configured to perform wireless communication using at least one radio access technology; and one or more processors coupled to the at least one radio, wherein the one or more processors are configured to cause the UE device to: receive, from a base station, a Radio Resource Control (RRC) signaling which indicates that a semi-static codebook is configured for a Hybrid Automatic Repeat Request (HARQ)-Acknowledgement (ACK) feedback for both multicast and unicast and that a HARQ-ACK feedback for multicast is disabled; and generate a HARQ-ACK feedback report which excludes a HARQ-ACK bit for the multicast by using a time domain resource assignment (TDRA) for the unicast to configure the semi-static codebook.

Method, network device and a computer program in a communication network (100) for the assisting of an application server (130) using the Constrained Application Protocol, CoAP, in the communication of a data object (600) to client devices (110), whereby the data object comprises data blocks (601-609). The network device is operative to inform of a multicast repair functionality. The network device is operative to receive at least one indication of at least one missing data block from a client device that did not successfully receive a data block within a transmission window. The network device is operative to decide to transmit and initiate transmission of the one or missing data block via unicast, multicast or both unicast and multicast. A computer program product is also disclosed.

Support for multicast and broadcast data transmissions and acknowledgement feedback for the transmissions are being considered in 5G new radio (NR). Resource allocation techniques are provided to allocate uplink control channel resources for acknowledgement of downlink multicast / broadcast (MC / BC) data transmissions. An apparatus, such as a user equipment, receives a multicast / broadcast (MC / BC) configuration indicating a first physical uplink control channel (PUCCH) resource set for transmitting MC / BC acknowledgment (ACK) / negative acknowledgment (NACK), and a unicast configuration indicating a second PUCCH resource set for transmitting unicast ACK / NACK feedback. The apparatus also receives MC / BC data from a base station. The apparatus determines a first PUCCH resource from the first PUCCH resource set for transmitting MC / BC ACK / NACK feedback in response to the received MC / BC data and based on the received MC / BC configuration. The apparatus transmits the MC / BC ACK / NACK feedback to the base station in the determined first PUCCH resource.

A method and apparatus for switching of multicast and broadcast service between multicast and unicast in a wireless communication system is described. A CU-CP establishes a connection with a wireless device for a Multicast and / or Broadcast Service (MBS). A CU-CP receives, from the CU-UP, a first message including a retransmission information on data transmission related to the MBS. A CU-CP determines whether to perform a switch of the first transmission to a second transmission for the MBS based on the retransmission information.

Methods, apparatus, and systems for providing multicast handover are disclosed. In one example aspect, the method includes receiving, by a target radio access node (T-RAN) from a source radio access node (S-RAN) or from an access and mobility management function (AMF), a handover request including a multicast or broadcast context for a handover of a multicast and broadcast service (MBS) to the T-RAN. The method further includes binding a shared tunnel for the MBS and a flow in a unicast protocol data unit (PDU) session in a case that an MBS session identified in the multicast or broadcast context has already been established at the T-RAN, and sending, to an AMF, a message including a handover request acknowledgment or a path switch.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine a group-specific multicast / broadcast communication configuration. The group-specific multicast / broadcast communication configuration may be independently configured from a unicast communication configuration and a cell-specific communication configuration. The UE may determine one or more multicast / broadcast communication parameters according to the group-specific multicast / broadcast communication configuration. The communication parameters may include a time resource allocation, a frequency resource allocation, a slot configuration, a downlink reference signal configuration and a resource mapping configuration for receiving multicast / broadcast downlink signals. The UE may receive multicast / broadcast downlink signals from the base station based on the one or more multicast / broadcast communication parameters.

Described herein are devices, systems, methods, and processes for optimizing the utilization of large bandwidth channels in wireless communication networks. This is achieved by an access point (AP) identifying parts of the channel available for standard power (SP) transmissions and using novel puncturing messages to allow simultaneous low-power indoor (LPi) transmissions on the “punctured” parts of the channel. The AP can implement different modes to allow concurrent transmissions at SP level on the SP-allowed parts of the channels and at LPi level on part of the channel that do not allow SP transmissions. The AP can also switch unicast communication with a client device to LPi but with a larger channel width as the device nears the AP. The techniques allow for fuller utilization of large bandwidth channels where only a part of the channel is available for SP transmissions, thereby improving network efficiency.

The invention provides an integrated circuit of multi-service multiplexing access network local side equipment. The integrated circuit comprises a data forwarding matrix unit, a multicast service forwarding matrix unit, a unicast service forwarding matrix, a data plane control unit, a logic plane control unit and a protocol conversion unit, wherein the logic plane control unit is used for determining an optimized unitized and modularized global strategy instruction and realizing protocol conversion, service multiplexing and data forwarding of a communication service, a broadband internet service and a cable television service; and the protocol conversion unit is used for realizing the live broadcast service transmitted by the cable television network in the access network local side equipment. Compared with the existing network for receiving the television live broadcast service in a mode of starting the IGMP protocol, the scheme of the embodiment has the advantages that the investment cost of the CDN node of the core network is greatly reduced, and meanwhile, a home-entry gateway does not need to be arranged in a user home, so that the investment cost of a broadband service, communication service and broadcast television service fusion network is reduced.

Techniques are disclosed for sending Protocol Independent Multicast (PIM) messages across a Layer-3 (L3) transport network. In one example, a first network device receives, via an L2 network from a multicast sender device, a multicast packet for a multicast group associated with a multicast service. The first network device generates, based on the multicast packet, a unicast L3 packet comprising a PIM register request configured to register the first network device as a multicast source for the multicast group. A header of the unicast L3 packet specifies a source address comprising a network address translation (NAT) to an address of a virtual loopback interface of a second network device. The virtual loopback interface is associated with a PIM service between the first and second network devices for the multicast service. The first network device forwards the unicast L3 packet across an L3 transport network to the second network device.

In a method for configuring a radio bearer, a distributed unit (DU) of a distributed base station receives, from a central unit (CU) of the distributed base station, a request to configure radio resources for a radio bearer and, based on one or more factors associated with the radio bearer, either includes or refrains from including in a response one or more configuration parameters for the radio bearer. The DU also transmits the response to the CU.

A method for delivering data to User Equipments (UEs) is implemented in a node of a Radio Access Network (RAN), and includes receiving, from a network node, a packet including data that is to be delivered from a Core Network (CN) to one or more User Equipments (UEs); transmitting the packet to at least some of the one or more UEs via a broadcast transmission when the packet is received via a common downlink tunnel or via a first DL tunnel of a plurality of DL tunnels; and transmitting the packet to a particular UE of the one or more UEs via a unicast transmission when the packet is not received via the common downlink tunnel or is received via a second DL tunnel of the plurality of DL tunnels.

Apparatus and methods are provided for data collection general framework for AI-ML model training. In one novel aspect, the UE server sends the data collection request / triggering to UE through the application layer without network involvement with the general frame for data collection including data collection triggering, data collection configuration, measurements, and data delivery. In one embodiment, the assistance information is received from the RAN node with unicast or groupcast. In another embodiment, the UE delivers assistance information with the collected AI-ML model related data to deliver to the UE server. In one novel aspect, the UE server initiates a data collection request destined to the one or more UEs and receives one or more data collection responses and AI-ML model related data and assistance information through a data tunnel connected with the wireless network.

The invention relates to the technical field of equipment upgrading, and discloses a carousel-based equipment batch upgrading method and system, an updater and a medium, and the method comprises the following steps: if an ith round of upgrading mode is a first mode, according to the ith round of to-be-updated data, updating the ith round of to-be-updated data; controlling the ith round of target channel to broadcast an ith round of target data packet to each to-be-upgraded device according to a unicast strategy; and if the ith round of upgrading mode is a second mode, controlling the ith round of target channel to broadcast an ith round of handshake signal and an ith round of target data packet to each piece of to-be-upgraded equipment according to the ith round of to-be-upgraded data and a mixed broadcasting strategy. Therefore, tedious connection operation is not required to be carried out on equipment one by one, and complex and high-risk operation of disassembly is avoided.

The invention discloses a security beam forming method with integration of multicast and unicast communication perception assisted by NOMA, and the method comprises the steps: a base station sends a multicast and unicast mixed signal to a communication user and a radar user, a potential eavesdropper eavesdrops the unicast signal, and the base station carries out the perception of the radar user and a target through the sent mixed signal, after the mixed signal is reflected by a radar user and a target, the base station receives a radar echo signal, and a communication user decodes a multicast signal by using NOMA (Non-Orthogonal Multiple Access) and eliminates interference of the multicast signal on a unicast signal by using an interference elimination technology of the NOMA; establishing a power minimization optimization problem under the conditions that the communication performance of a user and the perception performance of a radar user and a target are met and the unicast eavesdropping performance is inhibited; for the problem, discrete relaxation is carried out on an existing area of the target, an S-lemma is used for substituting channel estimation errors, the problem is converted into a convex optimization problem through SDR, and then a convex optimization solver is used for obtaining multicast and unicast beams; the method has the advantages of low power consumption and good robustness.

The present disclosure relates to a data transmission method, a UE and a network node. The method performed by a network node includes: configuring a first and / or second radio channel for a first PDU session, or configuring a first and / or second radio channel for at least one same QoS flow of a first PDU session. The first radio channel is configured to transmit first data to a UE; the second radio channel is configured to transmit second data to the UE; the first and second radio channels are one of a unicast radio channel, a broadcast or multicast radio channel; the first data represents first data of the first PDU session or first data of at least one QoS flow of the first PDU session; the second data represents second data of the first PDU session or second data of at least one Qos flow of the first PDU session.

The invention relates to the technical field of computer data processing, in particular to a self-discovery communication method, system and device between network participant containers based on DDS communication middleware and a readable storage medium, network participant application programs are independently packaged in the containers based on the DDS communication middleware, and a virtual large two-layer network is created by using a Wave Net, so that the network participant application programs are automatically found in the containers. The virtual large two-layer network adopts a VXLAN tunnel to construct a network bottom layer, so that containers deployed on different hosts communicate in the same virtual local area network; the publisher container and the subscriber container show existence of themselves through multicast communication broadcast discovery information, and the publisher container and the subscriber container obtain IP and port information of the opposite side and carry out point-to-point unicast communication when themes are matched. According to the invention, while network isolation is ensured, the physical network boundary of the DDS container is greatly expanded, the network interconnection capability of the container in the system is improved, a high-availability and high-performance containerized distributed real-time system can be constructed, and multi-host and multi-node communication application requirements can be met.

According to an embodiment of the disclosure, a base station (BS) is configured to: transmit traffic to at least one user equipment (UE) connected to the BS via a unicast scheme; based on information about a number of UEs connected to the BS to use a particular application, a particular service, or a particular session, or information of traffic to be used by the UE, determine whether to switch a transmission scheme of the traffic from the unicast scheme to a broadcast / multicast scheme; and as the broadcast / multicast scheme is determined as the transmission scheme of the traffic, transmit a message informing that the transmission scheme of the traffic is to be switched.

A radio access network (RAN) participating in a multicast and broadcast service (MBS) session may implement a method for managing MBS communications. The method comprises: (a) performing (i) unicast communication and (ii) multicast communication with a UE operating in a connected state; (b) in response to determining that the data of the unicast communication is inactive, transmitting a message indicating that the UE will transition from the connected state to an inactive state in which the radio connection between the UE and the RAN is suspended; and (c) continuing to perform multicast communication with the UE operating in the inactive state.

The invention discloses a data transmission method, device, equipment and system and a storage medium, and relates to the technical field of communication. Taking a first device to execute the method as an example, public data are sent to a plurality of second devices through a multicast channel, and the public data are the same data; and sending the corresponding difference data to the plurality of second devices through the plurality of unicast channels, wherein the difference data of the plurality of second devices are different. According to the method, one-to-many public data transmission is realized through one multicast channel, so that the transmission efficiency of the public data is improved, and the resource overhead of public data transmission is relatively low; one-to-many differential data transmission is realized through a plurality of unicast channels, so that the data types of the one-to-many transmission data are richer, and the different second devices can perform different personalized operations through the differential data, so that the method can better meet the diversified scene requirements of the one-to-many transmission data.

A method includes monitoring a plurality of packets received by a network sensor associated with a port of a network, determining a ratio of unicast, multicast or broadcast packets to a total number of packets for the plurality of packets, determining that the ratio is outside the bounds of a threshold range, detecting that a port is misconfigured based on the determination that the ratio is outside the bounds of a threshold range, and automatically notifying a network administrator that the port is misconfigured based on the determination that the ratio is outside the bounds of a threshold range. Further disclosed is a computer system and computer program product configured to perform the method.

A communication method implemented by an apparatus includes that a source access network element sends information of a unicast quality of service (QoS) flow of a protocol data unit (PDU) session corresponding to a multicast QoS flow of a multicast broadcast service (MBS) to a target access network element in a handover procedure. The target access network element forwards the information to a session management network element. The session management network element then indicates a user plane network element connected to the target access network element to send data of the MBS to a terminal device through the target access network element and by using a resource of the unicast QoS flow corresponding to the multicast QoS flow of the MBS.

In a method for configuring a radio bearer, a distributed unit (DU) of a distributed base station receives a request to configure radio resources for the radio bearer from a central unit (CU) of the distributed base station, and includes or refrains from including one or more configuration parameters for the radio bearer in a response based on one or more factors associated with the radio bearer. The DU also sends the response to the CU.

In some examples, a vehicular battery management system (BMS) comprises a set of battery cells and a secondary network node coupled to the set of battery cells. The secondary network node is configured to wirelessly receive, in a first slot of a super frame, a unicast downlink packet from a primary network node, the unicast downlink packet addressed to the secondary network node. The secondary network node is also configured to wirelessly transmit, in a second slot of the super frame and responsive to the unicast downlink packet, an uplink packet to the primary network node.