711 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.

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.

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.

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.

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.

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.

The invention provides a Modbus protocol security enhancement method and system in a unicast communication scene, and relates to the technical field of industrial control networks. Comprising the following steps: sharing a first ciphertext and a second ciphertext between a master node and a slave node; the master node generates a first message authentication code according to the second ciphertext, a preset key and the first random number, and sends the first message to the slave node by using the target function code; the slave node authenticates the identity of the master node according to the first message authentication code, the first ciphertext, the preset key and the second random number; when the slave node successfully authenticates the identity of the master node, the slave node generates a second message authentication code according to the first ciphertext, the preset key and the second random number, and sends a second message to the master node by using the target function code; and the master node authenticates the identity of the slave node according to the second message authentication code, the second ciphertext, the preset key and the first random number. Therefore, the validity of the identities of the two communication parties can be ensured, and the integrity and confidentiality of the data in the transmission process are guaranteed.

Methods, systems, and apparatuses may assist scheduling for broadcast and groupcast on new radio Uu interface. In an example, there may be broadcast and groupcast transmission scheduling mechanism with: group based scheduling, UE specific based scheduling, or sub-group based scheduling. In another example, there may be a serving cell configuration for broadcast and groupcast transmission with dedicated cell for broadcast and groupcast, or broadcast and groupcast cell which is shared with the cell for unicast. In another example, there may be downlink control related configuration for broadcast and groupcast transmission with details of the BWP configuration, the CORESET configuration, or the search space configuration.

Described herein are systems and methods for resource block determination for multicast and broadcast transmissions. According to various embodiments, a unicast physical downlink shared channel (U-PDSCH) transmission and a group common physical downlink shared channel (GC-PDSCH) transmission are received; a resource block (RB) configuration for decoding the U-PDSCH transmission and GC-PDSCH transmission is determined, wherein the RB configuration specifies a mapping of at least one of the U-PDSCH and the GC-PDSCH to one or more RB collections; and the GC-PDSCH within a Common Frequency Resource (CFR) in decoded according to the RB configuration. According to various embodiments, the determined RB configuration includes a specification of size and location for the one or more RB collections which at least one of the U-PDSCH and the GC-PDSCH is mapped to. In various embodiments, RB collection size and location may be determined relative to CRB indexes and / or a CFR.

This application provides a sidelink communication method and an apparatus, which can be applied to a U2U relay communication scenario, and reduce energy consumption of a terminal device. The method includes a first terminal device sending a first request message to a second terminal device, where the first request message is used to request to establish an end-to-end unicast connection between the first terminal device and a third terminal device. After sending the first request message, the first terminal device remains in a state that is before the sending of the first request message. Alternatively, the first terminal device remains in an active state until a first message is received, a second message is sent, or a connection establishment procedure is stopped by an upper layer.

A terminal includes: a control unit configured to connect to another terminal in an RRC (Radio Resource Control) layer; and a transmitting unit configured to transmit data to the another terminal. In a case where the another terminal or the terminal itself performs at least one of transmission, reception, and sensing during a specific timing, the control unit controls an operation related to the connection in the RRC layer, based on the specific timing.

The invention relates to a cashier system data synchronization method and system, an intelligent terminal and a storage medium, and relates to the field of intelligent terminal collaboration.The method comprises the steps that database changes are monitored in real time, incremental data are extracted, and the incremental data comprise at least one of tenant IDs, store IDs or device IDs; through an MQTT protocol, according to a hierarchical structure of a tenant ID, a store ID and a device ID, pushing the tenant ID, the store ID and the device ID to a target device in a broadcast or unicast mode; after the target equipment receives the incremental data, judging whether the target equipment has an operation behavior or not; if yes, generating an updating task according to the incremental data; adding the updating task into the queue to be processed through the target equipment; in response to the end of the operation behavior, updating tasks in the to-be-processed queue are executed in sequence, and the updating tasks are used for writing incremental data into a local database; and if not, writing the incremental data into the local database through the target equipment. The method has the effects of improving the operation efficiency of the store and guaranteeing the real-time consistency of the data.

Methods and apparatuses for processing an acknowledgement report for reception of control information. A method for a user equipment (UE) to receive physical downlink control channels (PDCCHs) includes determining a prioritization for receiving the PDCCHs and receiving the PDCCHs based on the prioritization. PDCCH receptions for a first search space set (SSS) are prioritized over PDCCH receptions for a second SSS or a third SSS. The PDCCH receptions for the second SSS are prioritized over the PDCCH receptions for the third SSS based on a configuration. The PDCCH receptions for the first SSS include a first downlink control information (DCI) format. The PDCCH receptions for the second SSS include a second DCI format that schedules a groupcast physical downlink shared channel (PDSCH) reception. The PDCCH receptions for the third SSS include a third DCI format that schedules a unicast PDSCH reception.

A system and a method in a wireless communication network are disclosed to reduce a power consumption of a Multicast and Broadcast Services (MBS) device. The device includes an interface to the wireless communication network that receives wireless communications from the wireless communication network, and a controller. The controller controls the interface to receive unicast communications in a bandwidth part (BWP) of the wireless communication network and to receive MBS communications in a common frequency resource (CFR) of the wireless communications. The controller further controls the interface by selectively receiving MBS communications in the CFR to reduce a frequency bandwidth of the interface, or a combination thereof, to reduce a power consumption of the device.

Disclosed in the present application are a method and apparatus for distributing a multicast high-availability market condition. In the present application, it is only necessary to send a copy of multicast traffic from a market condition center to a public cloud, an elastic scaling group of a multicast receiver is provided, in order to save on a bandwidth between AZs, a member of one AZ of the elastic scaling group is selected nearby as the multicast receiver, and only when all the members of the same AZ in the same scaling group fail, a member receiver of another AZ in the scaling group is selected. In the present application, cross-AZ deployment of a multicast gateway is realized, and automatic nearby optimal reception to a market condition source is realized by means of establishing a unicast vxlan tunnel with a POP access point and on the basis of different lengths of BGPAZ numbers.

A system including a server and a wireless RF access node connected to a communication network is provided. The server provides a first publish-subscribe broker of one or more publish-subscribe brokers forming part of a publish-subscribe broker network. The server connects to the wireless RF access node. A first entity connects via the wireless RF access node to the first publish-subscribe broker using a unicast IP address and thereafter publishes data packets. A second entity connects to the publish-subscribe broker network via any of the one or more publish-subscribe brokers. The server provides packet distribution services via the first publish-subscribe broker for the first entity, the publish-subscribe broker network routes communications from the first entity to the second entity when the second entity is subscribed; and the data packets published by the first entity are routed through the publish-subscribe broker to which the second entity is connected.

A method for use in a system including an Ethernet Virtual Private Network (EVPN) core network and a VXLAN data plane, a first gateway device GW1 and a second gateway device GW2 operating in an all-active multihoming mode to interconnect the EVPN core network and VXLAN data plane, is described. The method includes establishing, by the second gateway device GW2, a VXLAN tunnel to a remote VTEP X before traffic is sent by the remote VTEP X and received by the second gateway device GW2, but after traffic is sent by the remote VTEP X and received by the first gateway device GW1. wherein the first and second gateway devices GW1 and GW2 use an anycast IP address as a source address for VTEP X.

Provided are a method and device for switching between unicast transmission and multicast / broadcast service (MBS) transmission in a cellular wireless communication network. The method for a base station to switch MBS data transmission may include: transmitting configuration information for reception of MBS data of a user equipment (UE) to the UE; transmitting information instructing a change of radio bearer for the reception of the MBS data to the UE; and receiving a packet data convergence protocol (PDCP) status report from the UE.

Method and WTRU enabled for service continuity using WTRU-to-WTRU relays. A relay path may be modeled as an SLRB, RLC leg of an SLRB, and / or a MAC logical channel. The WTRU adds a path for a destination based on configured / usable relays. The WTRU may associate an end-to-end L2 destination ID with one or more path L2 destination IDs or path IDs. Upper layers select one or more paths for transmission of a packet / bearer. The WTRU may send a relay announcement message containing path connectivity information. A WTRU may select a path for transmission based on properties associated with a sidelink. The WTRU may activate / deactivate an SL bearer, unicast link, L2 destination, and / or RLC Leg. The WTRU changes a bearer associated with an SLRB from an established RLC entity to another established RLC entity.

This disclosure provides details of a configuration signaling and associated behaviors for sidelink (SL) discontinuous reception (DRX) for unicast, connection-specific DRX. According to one embodiment, a first user equipment (L E) configures link-specific discontinuous reception (DRX) by processing a common DRX configuration that is preconfigured, received through a Uu interface, or received in a SIB; and signaling over a PCS interface with a second UE, a link-specific configuration for a link-specific DRX cycle, the Link-specific configuration including a link-specific on-duration parameter.

A wireless device determines to assign a same beam management identifier to a first unicast link of a first wireless device and a second unicast link of a second wireless device, based on measurements associated with the first unicast link and the second unicast link. The wireless device transmits, based on determining to assign the same beam management identifier to the first unicast link and the second unicast link, an indication of the same beam management identifier to the first wireless device and the second wireless device. The wireless device transmits, to the first wireless device and the second wireless device, a sidelink transmission including: a field value indicating the same beam management identifier, and one or more sidelink reference signals for beam management of the first unicast link and the second unicast link.