498 results about "Broadcast service" patented technology

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.

A method can include receiving, by a wireless device, radio resource control (RRC) messages that include parameters of a multicast and broadcast service (MBS). The parameters can include a discontinuous reception (DRX) hybrid automatic repeat request (HARQ) round trip time (RTT) timer; a DRX retransmission timer; and a feedback indicator indicating whether HARQ feedback is enabled. The method can also include receiving a group common downlink control information (DCI) scheduling a transport block (TB) of the MBS. The method can further include, in response to the feedback indicator indicating that HARQ feedback is enabled: transmitting a HARQ feedback with a negative value based on the TB being unsuccessfully decoded; and starting the DRX HARQ RTT timer after transmitting the HARQ feedback. The method can additionally include starting the DRX retransmission timer based on an expiry of the DRX HARQ RTT timer.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to the present disclosure, MBS services for flexible and dynamic MBS service scenarios become possible in the next-generation wireless communication systems.

To provide a communication method, user equipment, a mobile communication system, a program, and a chip set for allowing the user equipment in an RRC inactive state to perform multicast reception, in a mobile communication system providing a multicast / broadcast service (MBS).SOLUTION: User equipment UE 100, which is in a ratio resource control (RRC) inactive state and participates in a multicast session, receives a paging message for notifying the start of the multicast session from a network node gNB 200, and determines whether to make a transition from the RRC inactive state to an RRC connected state. The paging message includes session information on the multicast session, and identification information for specifying one or more pieces of user equipment UE 100 to be transitioned to the RRC connected state.SELECTED DRAWING: Figure 9

To provide a receiver capable of shortening a time until using a broadcast communication cooperation service of a selected destination while using the broadcast communication cooperation service by a broadcast managed application.SOLUTION: The receiver includes a reception unit, a channel selection unit, an application execution unit, and an application control unit. The application execution unit executes an application. The application execution unit executes a function of performing a process for channel selection based on the channel selection information of the broadcast service and a process for executing the broadcast managed application based on the URL of the application information table of the broadcast managed application designated by the broadcast managed application. The application control unit controls the channel selection unit to select the designated broadcast service, and performs control to activate the broadcast managed application based on the designated URL.SELECTED DRAWING: Figure 2

A radio access network (RAN) participating in a multicast and broadcast services (MBS) session can implement a method for managing MBS communication. The method includes: (a) transmitting, to a user equipment (UE), a first command to transition from a connected state to an inactive state in which a radio connection between the UE and the RAN is suspended, the command including a first multicast configuration with an MBS radio bearer (MRB) parameter, for receiving MBS data; (b) transmitting, to the UE operating in the inactive state, MBS data according to the first multicast configuration; (c) receiving, from the UE, a request to resume the radio connection; and (d) transmitting, to the UE and in response to the request, a second command to resume the radio connection, the command including a second multicast configuration for continuing to receive the MBS data in the connected state.

A communication method for use in a mobile communication system to provide a multicast / broadcast service (MBS), the method comprising the steps of: receiving configuration information from a base station by a user equipment in a radio resource control (RRC) connected state; and the user equipment transitioning from the RRC connected state to the RRC inactive state receives the multicast session in the cell of the base station. The configuration information includes an information element indicating whether a user equipment receiving a multicast session in an RRC inactive state is allowed to reselect a cell to another cell.

A cell reselection method for multicast and / or broadcast service (MBS) service continuity and related devices are provided. The method, performed by a user equipment (UE), includes staying on a first cell for MBS data reception based on an MBS configuration in a power saving state; receiving a signaling from at least one of the first cell or at least one neighboring cell for the power saving UE to prioritize cells for cell reselection, wherein an MBS indication comprised in the signaling is configured to identify whether an MBS session of an associated cell is activated; and selecting a second cell from the at least one neighboring cell based on the MBS indication, and changing from the first cell to the second cell to camp on for the MBS data reception. With this method, MBS service continuity is achieved during the change of serving cell.

Embodiments include methods for a user equipment (UE) configured to support multicast and broadcast services (MBS) in a non-terrestrial network (NTN). Such methods include obtaining the following information: a configuration of an intended service area for a broadcast service, and a hysteresis configuration for the intended service area. Such methods include determining the UE's geographic location and determining a relation between the UE's geographic location and one or more thresholds defined by the following: the configuration of the intended service area, and the hysteresis configuration. Such methods include, based on the determined relation, selectively managing one or more radio bearers for the broadcast service. Other embodiments include complementary methods for radio access network (RAN) nodes, as well as UEs and RAN nodes configured to perform such methods.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, configuration information indicating that network coding is enabled for initial transmissions associated with a multicast / broadcast service (MBS) and indicating that network coding is enabled for retransmissions associated with the MBS. The UE may receive, via a multicast traffic channel or a dedicated traffic channel, an initial transmission associated with the MBS, wherein the initial transmission is associated with a first set of encoded packets. The UE may transmit a radio link control (RLC) status feedback message associated with the initial transmission. The UE may receive, via the multicast traffic channel or the dedicated traffic channel, a retransmission associated with the initial transmission, wherein the retransmission is associated with a second set of encoded packets. Numerous other aspects are described.

A communication method and apparatus, and a system, to improve efficiency of receiving a multicast service. The communication method includes: sending a radio resource control (RRC) resume request message to a first network device; receiving an RRC resume message sent by the first network device; entering an RRC connected state from an RRC inactive state; and receiving a first multicast based on a first multicast broadcast service radio bearer (MRB), where the first MRB is determined based on the RRC resume message and first multicast configuration information, the first multicast configuration information is obtained from a second network device, and the second network device is a network device in a last serving cell in an RRC connected state.

A communication method used in a mobile communication system for providing a multicast / broadcast service (MBS) includes the steps of: suspending, by a user equipment in a radio resource control (RRC) connected state, a first multicast radio bearer (MRB) in response to transitioning from the RRC connected state to an RRC inactive state after establishing the first MRB with a network; receiving, by the user equipment in the RRC inactive state, a multicast session via a second MRB from the network; and performing, by the user equipment, predetermined processing of switching from reception of the multicast session via the second MRB to reception of the multicast session via the first MRB, when the user equipment performs RRC connection resume to transition from the RRC inactive state to the RRC connected state.

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.

The present application relates to the technical field of communications, and provides a communication method and apparatus. The method comprises: determining that an access network device corresponding to a first session enters or leaves a first area, wherein the first session is used for carrying a first multicast / broadcast service, and the first area is a service area of the first multicast / broadcast service; and sending first information to a second network element, wherein the first information is used for updating the first session. As the access network device enters or leaves the service area of the multicast / broadcast service, a first network element can instruct the second network element to update the session corresponding to the access network device, thereby ensuring smooth operation of the multicast / broadcast service within the service area and improving the service continuity in an NTN scenario.

Embodiments described herein relate to methods and apparatuses for reporting Quality of Experience, QoE, measurements for a Multicast Broadcast Service, MBS. A method in a user equipment comprises receiving, from a network node, a configuration configuring the performing and / or reporting of QoE measurements of the MBS, wherein the configuration indicates that QoE measurements are to be performed and / or QoE reports are to be reported upon fulfilment of one or more conditions.

Systems and methods for session continuity of Multicast Broadcast (MB) Sessions are provided. In some embodiments, a method performed by a base station for session continuity of MB Sessions includes at least one of: providing at least one MB Session to a wireless device connected in 5G; determining that the wireless device is handed over to a target Next Generation Radio Access Network (NG-RAN); and providing session continuity of the at least one MB Session to the wireless device. In some embodiments, being handed over to the target NG-RAN comprises an Xn handover. In some embodiments, being handed over to the target NG-RAN comprises a N2 handover. Some embodiments of the current disclosure provide support for Multicast Broadcast Session continuity (aka “Handover”) at Inter-gNB Xn Handover and Inter-gNB N2 Handover in the 5G NR radio access.

The disclosure relates to a communication technique for fusing a 5G communication system with IoT technology to support higher data rate after the 4G system and a system thereof. The disclosure may be applied to an intelligent service (e.g., smart home, smart building, smart city, smart or connected car, healthcare, digital education, retail, security and safety related services, etc.) based on 5G communication technology and IoT-related technology. The disclosure discloses a method for allowing a UE to normally receive a MBS service in various scenarios.

The application provides a wireless broadcast service message enhanced transmission method, which comprises the following steps: S1, connecting a broadcast service server and at least one first broadcast service client to a switch network subsystem in wired communication; the switch network subsystem is in communication connection with a Wi-Fi subsystem; the Wi-Fi subsystem is in wireless communication connection with at least one second broadcast service client; S2, presetting the Wi-Fi subsystem; S3, when a broadcast service client is interested in a video, a user feeds back an IP address of the broadcast service client which needs to receive the video; S4, performing legality check on the minimum transmission rate of the at least one first broadcast service client and / or the at least one second broadcast service client; and S5, transmitting by the Wi-Fi subsystem according to the parameters preset in step S2. According to the requirements of different service clients, different processing procedures can be executed correspondingly, so that the requirements of real-time video transmission can be met.

An apparatus and a method for optimal delivery of a multicast / broadcast service (MBS) are provided. A method of an MBS user equipment (UE) includes determining a first indication message to be transmitted to a network, wherein the first indication message includes a UE status associated with an MBS and / or a need for switching an MBS delivery mode. The method further includes receiving a second indication message carrying an optimal delivery mode configuration such as the scheduling information of the switched MBS delivery mode, the frequency, and / or identity of the neighboring cells or the areas that broadcast the same service that the UE is receiving before switching the delivery mode. This can solve issues in the prior art, provide a dynamic, reliable, and / or efficient MBS delivery mode switching, support service continuity, provide a good communication performance, and / or provide high reliability.

Systems and methods for multicast data traffic service continuity under multicast-broadcast services (MBS) operation during a radio resource control (RRC) state or mode transition are described. In some embodiments, a user equipment (UE) receives, from a network, while in an RRC connected mode, an RRC release message comprising an RRC inactive mode point to multipoint (PTM) configuration that uses an MBS session to receive multicast data traffic while the UE is in an RRC inactive mode; enters the RRC inactive mode from the RRC connected mode in response to the RRC release message; and uses the RRC inactive mode PTM configuration to receive, from the network, the multicast data traffic of the MBS session while the UE is in the RRC inactive mode. Cases where a UE instead re-uses an RRC connected mode PTM configuration after transitioning to the RRC inactive mode are also described. Analogous network behaviors are described.

Disclosed is a method for transmitting a frame of a wireless communication system. A non-AP STA receives a beacon frame comprising a request type field from an AP and can receive a downlink frame or transmit an uplink frame in accordance with a specific field value included in the beacon frame. Here, the request type field comprises a specific field for indicating a target wake time (TWT) for a low latency operation, and, if the value of the specific field is set as a first specific value, a broadcast TWT service period (SP) is a TWT SP for the low latency operation.

Embodiments of this application provide a communication method and apparatus. The method includes: obtaining first configuration information; performing an application layer measurement on a first broadcast service based on the first configuration information, to obtain a measurement result; and sending the measurement result and indication information to a first network device, where the indication information indicates a first cell in which a terminal device receives the first broadcast service. According to the solutions of this application, a network device corresponding to the first cell can optimize a configuration of the first broadcast service based on the measurement result, to improve performance of the first broadcast service, and therefore improve communication quality and user experience.

A broadcast service network (separate from a cellular network) includes broadcast service signal (BSS) nodes that broadcast signals to receivers of user equipment (UE). The BSS may provide broadcast service information to user equipment, such as the emergency notifications, even when the user equipment is out of range of the cellular network. Further, the broadcast service signals may provide information that improves the user equipment's search and access time for connecting to the cellular network (e.g., a cellular service station) and / or that assists the user equipment in locating a nearby region of cellular network coverage. In addition, the BSS may be wake-up signals configured to activate the receiver when the receiver is in a sleep or inactive mode. In some embodiments, the BSS may be pointer signals configured to direct the user equipment to a broadcast service channel to receive the broadcast service information.

A paging method is implemented in a node of a radio access network (RAN) and comprises receiving a message including an identifier of a multicast and / or broadcast services (MBS) session; and in response to determining that the message includes a paging list, paging a user equipment (UE) using information in the message.

An overall architecture to integrate multicast and broadcast service into a general 5G core network. The architecture may provide methods and systems to switch the delivery mode of transmitting messages to User Equipment (UE)s from a unicast mode to a multicast mode. The method includes triggering events at UE, network functions, content provider or RAN node to initiate the switch process; a procedure for UE initiated switch from unicast to multicast; a procedure for network-initiated switch from unicast mode to multicast mode; and a procedure for RAN initiated switch from unicast mode to multicast mode. The architecture may also provide methods to switch the delivery mode from multicast mode to unicast mode. These methods may include triggering events at UE, network functions, content provider or RAN node to initiate the switch process; a procedure for UE initiated switch from multicast mode to unicast mode; a procedure for network-initiated switch from multicast mode to unicast mode; and a procedure for RAN initiated switch from multicast mode to unicast mode.

A radio access network. RAN, participating in a multicast and broadcast services. MBS, session can implement a method for managing MBS communication. The method includes: transmitting (702), to a first UE operating in a connected state, a first multicast configuration for receiving MBS data in the inactive state: transmitting (703), to a second UE operating in the connected state, a second multicast configuration for receiving the MBS data in the connected state; and transmitting (708) the MBS data to the first UE operating in the inactive state, according to the first multicast configuration and the second UE operating in the connected state, according to the second multicast configuration.

A method and apparatus for multicast broadcast service. The method implemented at an access and mobility management function (AMF) entity comprises receiving a message for starting a multicast / broadcast (MB) session from a session management function (SMF) entity. The message comprises first location information. The method further comprises sending an MB session joining accept, reject, or cancel message to at least one terminal device based on the first location information.

A Multicast Broadcast Service (MBS) transmission method, an MBS transmission indication method, and a device are provided. The MBS transmission method includes: receiving first information from a network side; receiving an MBS or second information based on the first information, where the second information includes information about sending control of the MBS; and the first information is used to indicate one or more of the following: information about a sending frequency of the MBS; and information about a sending frequency of the second information.

A communication method performed by a user equipment in a mobile communication system that provides a multicast / broadcast service (MBS) includes receiving a multicast session from a network in a radio resource control (RRC) connected state using a first multicast radio bearer (MRB) for the RRC connected state, receiving, from the network, an RRC release message for causing the user equipment to transition to an RRC inactive state, the RRC release message including configuration information indicating a configuration of a second MRB used for reception of the multicast session in the RRC inactive state, and establishing the second MRB by applying the configuration information before suspending the first MRB in response to the reception of the RRC release message.

A communication method used in a mobile communication system for providing a multicast / broadcast service (MBS) includes receiving, by a user equipment in a radio resource control (RRC) connected state and having joined a multicast session, a point-to-multipoint (PTM) configuration for the multicast session on a dedicated control channel (DCCH) from a base station. The receiving includes receiving, on the DCCH from the base station, the PTM configuration including an information element that is the same as an information element provided on a multicast control channel (MCCH) when the multicast session is activated.