23 results about "Multimedia Broadcast Multicast Service" patented technology

This application provides a communication method and a related apparatus, which are applied to the multicast field, and in particular, relate to a multimedia broadcast multicast service MBMS. In this method, a terminal device receives, from a target base station to which the terminal device is handed over, at least one first data packet that is of a first service and that is sent in a transmission mode, and receives first indication information from the first base station. The terminal device sends a part of or all data packets in the at least one first data packet to an upper layer entity of the terminal device based on the first indication information.

Disclosed are methods for adjusting cell coverage of a multimedia broadcast multicast service. An example method (700) may include transmitting (701) data of a multimedia broadcast multicast service on a point-to-multipoint channel, monitoring (702) an uplink channel for information on an abnormal reception of the data, and adjusting (703) coverage of the point-to-multipoint channel based on the monitoring. Related apparatuses and computer readable media are also disclosed.

Systems, methods, and instrumentalities are disclosed for priority handling for ProSe Communications. A relay wireless transmit / receive unit (WTRU) may act as a relay between the network and the remote WTRU. The relay WTRU may receive a temporary mobile group identity (TMGI) request message from a remote WTRU. The TMGI request message may include a TMGI, a ProSe per packet priority level associated with the TMGI, etc. The relay WTRU may receive an evolved multimedia broadcast multicast service (eMBMS) data packet from a network. The eMBMS may be associated with the TMGI. The relay WTRU may apply the received ProSe per packet priority level associated with the TMGI to the received eMBMS data packet. The relay WTRU may relay the eMBMS data packet to the remote WTRU based on the ProSe per packet priority level. The relay WTRU may forward the eMBMS data packet to the remote WTRU via a PC5 interface.

Embodiments of the present application provide a unicast multicast conversion method and apparatus, and a processor-readable storage medium, wherein the unicast multicast conversion method comprises: receiving a Radio Resource Control (RRC) reconfiguration message sent by a first network node, when Multimedia Broadcast Multicast Service (MBMS) service data packets sent by the first network node are received through a multicast bearer and a User Equipment (UE) is in a connected state; reconstructing an MBMS Packet Data Convergence Protocol (MBMS PDCP) entity according to the RRC reconfiguration message; sending a reconfiguration completion message to the first network node so that the first network node converts the multicast bearer to a unicast bearer and sends the MBMS service data packets to the UE through the unicast bearer, the reconfiguration completion message being configured to characterize that reconstruction of the MBMS PDCP entity is accomplished by the UE; and receiving the MBMS service data packets sent by the first network node through the unicast bearer. The method realizes the conversion of the UE from receiving the MBMS service data packets through the multicast bearer to receiving the MBMS service data packets through the unicast bearer, thereby ensuring that no data packets are lost.

This application discloses an energy-saving method and related apparatus applicable to an energy-saving scenario of a base station. The method includes a step in which a network device determines a target symbol within a multimedia broadcast multicast service single frequency network (MBSFN) subframe of a first cell. The target symbol is a cell-specific reference signal (CRS) symbol, a demodulation reference signal (DMRS) symbol, a physical downlink control channel (PDCCH) symbol dedicated to a user equipment (UE), and a physical downlink shared channel (PDSCH) symbol dedicated to the UE. When the load of the first cell is lower than a preset threshold, the network device reduces the transmission power of the target symbol. When the load of the first cell is higher than the preset threshold, the network device increases the transmission power of the target symbol. In this application, the overall transmission power of the cell is adjusted by simultaneously adjusting the transmission powers of the four types of symbols, and the UE does not need to be notified via an air interface message. Therefore, the overall transmission power of the cell can be adjusted quickly, and the service stability of the base station can be guaranteed while realizing energy saving.

The present application provides a multimedia broadcast multicast service transmission method, including: a core network device determines a target terminal which is interested in a target MBMS; the core network device determines a cell associated with the target terminal; the core network device sends first information to an access network device to which the cell associated with the target terminal belongs, the first information is used to trigger the access network device to confirm whether the target MBMS needs to be received; establishes a broadcast connection with the access network device for the target MBMS, if second information from the access network device or the target terminal is received by the core network device, the second information is used to indicate the access network device needs to receive the target MBMS.

Embodiments described herein may include methods, systems, and apparatuses that support transmissions in wireless transmit and receive units (WTRUs) having reduced capabilities. Uplink transmissions and multimedia broadcast multicast service (MBMS) may be supported in WTRUs operating on a reduced bandwidth within an overall system bandwidth by receiving an uplink (UL) resource allocation within the reduced bandwidth, and sending a transmission over the UL resource allocation. The reduced bandwidth may include a small number of physical resource blocks (PRBs) that do not overlap with PRBs located on the band edge of the overall system bandwidth containing a system PUCCH. The UL resource may be located in both band edges of the reduced bandwidth, may be a PRB-pair in the same frequency of the reduced bandwidth, or may be a PRB-pair in a first slot in a first subframe and second slot in a second subframe of the reduced bandwidth

The invention provides a downlink resource allocation method, electronic equipment, a storage medium and a program product, relates to the technical field of communication, and is used for improving downlink transmission performance of a cell. The method comprises the following steps: under the condition that a first cell is in a long term evolution (LTE) state, distributing data symbols on a downlink subframe to a physical downlink shared channel (PDSCH) of the LTE; the data symbols are symbols used for transmitting user plane data in the subframe; and under the condition that the first cell is in a new air interface NR state, distributing a data symbol on a downlink subframe to a PDSCH (Physical Downlink Shared Channel) of the NR, and configuring the data symbol to be in a multimedia broadcast multicast service single frequency network MBSFN (Multimedia Broadcast Multicast Service Single Frequency Network) empty subframe format on an LTE (Long Term Evolution) side.

Various communication systems may benefit from the appropriate logging of measurements. For example, communication systems employing multimedia broadcast multicast service may benefit from logging multicast-broadcast single-frequency network measurements. A method can include logging, by a user equipment, a multicast-broadcast single-frequency network measurement corresponding to a logging period. The method can also include storing, at the time the multicast-broadcast single-frequency network measurement is made, cell measurement results.

The present disclosure provides systems, methods, and devices for wireless communications that support controlling feedback reporting associated with broadcast or multicast transmissions based on an indication of a non-numerical K1 (NNK1) in an associated transmission grant. In aspects, a base station transmits a multicast transmission grant including a NNK1 to a set of UEs. A UE of the set of UEs generates a feedback codebook for the multicast transmission and suspends transmission of the codebook until a reporting trigger event occurs based on the NNK1 received in the transmission grant. In aspects, the reporting trigger event includes receiving a subsequent multicast transmission grant with a valid K1, receiving a subsequent unicast transmission grant with a valid K1, or receiving a UE-specific multicast retransmission grant. In aspects, the UE determines a feedback resource for transmitting the suspended feedback codebook using the valid K1 in the trigger event. Other aspects and features are also claimed and described.

The present disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for enabling a wireless system implementing multicast transmissions to control feedback reporting from multiple user equipments (UEs) and to address feedback codebook misalignment issues. In particular, aspects provide a multicast transmission grant including a plurality of feedback timing indicators (K1), where the multicast transmission grant is configured to configure different UEs for multicast transmission feedback reporting, where feedback codebooks sent from the different UEs in various uplink control transmission occasions have the same size. Other aspects and features are also claimed and described.

A method and apparatus for LTE-NR spectrum sharing are disclosed. In one embodiment, a method for a wireless device (WD) includes: obtaining a configuration of at least one reference signal of a first radio access technology that overlaps in time with a multimedia broadcast multicast service single frequency network (MBSFN) subframe of a second radio access technology. In another embodiment, a method for a network node includes: configuring at least one reference signal of a first radio access technology to overlap in time with an MBSFN subframe of a second radio access technology.

A service data transmission method includes a terminal device receiving multimedia broadcast multicast service (MBMS) service data of a first cell and MBMS service data of a second cell before a cell change; and the terminal device stopping receiving the MBMS service data of the first cell after the cell change, wherein the first cell is a cell before the cell change, and the second cell is a cell after the cell change.

The present disclosure relates to energy-saving methods and apparatuses. In one example method, a network device determines target symbols in a multimedia broadcast multicast service single frequency network MBSFN subframe of a first cell. When load of the first cell is lower than a preset threshold, the network device reduces transmit powers of the target symbols. When the load of the first cell is higher than the preset threshold, the network device increases the transmit powers of the target symbols. In this application, an overall transmit power of a cell is adjusted by simultaneously adjusting transmit powers of four types of symbols, and a UE does not need to be notified through an air interface message.

A multimedia broadcast multicast service (MBMS) receiving method and apparatus are provided. The method includes: determining a first MBMS to be initiated; determining, according to a mapping relationship, a state instruction corresponding to the first MBMS, and the state instruction is used for instructing a terminal to receive the first MBMS in an RRC connected state or a non-RRC connected state; if the state instruction is used for instructing the terminal to receive the first MBMS in the RRC connected state, the terminal determining whether the terminal is currently in the non-RRC connected state; and if the terminal is currently in the non-RRC connected state, sending an RRC connection establishment request to a network device, and the RRC connection establishment request includes first instruction information, and the first instruction information is used for indicating that the reason for establishing the present connection is to receive an MBMS.

A method for adjusting cell coverage of a multimedia broadcast multicast service is disclosed. An example method (700) may include transmitting (701) data of a multimedia broadcast multicast service on a point-to-multipoint channel, monitoring (702) information about abnormal reception of the data on an uplink channel, and adjusting (703) coverage of the point-to-multipoint channel based on the monitoring. Related devices and computer-readable media are also disclosed.

Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support determination of user equipment (UE) capabilities, such as categories or coverage levels for broadcast or multicast content. In some cases, a wireless interface may be configured to take into account the capabilities of an indicated target UE. For example, a base station may receive an indication of the capabilities of a particular target UE. The capabilities of the target UE may be specified by a service provider for delivering multicast or broadcast content and subsequently associated with a wireless interface between the base station and the target UE. The wireless interface may then be configured based on the capabilities of the indicated target UE, for example, by configuring a transport block size or bandwidth. The base station may then use the configured wireless interface to send the broadcast or multicast content to the UE.

A communication method includes receiving, by a terminal device, first indication information. The first indication information is useable to indicate to the terminal device to disable a feedback function corresponding to a multimedia broadcast multicast service. The method further comprises disabling, by the terminal device, the feedback function corresponding to the multimedia broadcast multicast service.

This application discloses an energy-saving method and a related apparatus, applied to an energy-saving scenario of a base station. The method includes: A network device determines target symbols in a multimedia broadcast multicast service single frequency network MBSFN subframe of a first cell. The target symbols are a cell-specific reference signal CRS symbol, a demodulation modulation reference signal DMRS symbol, a physical downlink control channel PDCCH symbol dedicated to a terminal device UE, and a physical downlink shared channel PDSCH symbol dedicated to the UE. When load of the first cell is lower than a preset threshold, the network device reduces transmit powers of the target symbols. When the load of the first cell is higher than the preset threshold, the network device increases the transmit powers of the target symbols. In this application, an overall transmit power of a cell is adjusted by simultaneously adjusting transmit powers of four types of symbols, and a UE does not need to be notified through an air interface message. Therefore, the overall transmit power of the cell can be quickly adjusted, and service stability of the base station can be ensured while energy saving is implemented.

A resource allocation method includes that: a terminal device receives first configuration information from a network device, where the first configuration information is used for determining a radio resource configuration of a Multimedia Broadcast Multicast Service (MBMS). A terminal device and a non-transitory computer readable storage medium are also provided.

Systems, methods, and instrumentalities are disclosed for priority handling for ProSe Communications. A relay wireless transmit / receive unit (WTRU) may act as a relay between the network and the remote WTRU. The relay WTRU may receive a temporary mobile group identity (TMGI) request message from a remote WTRU. The TMGI request message may include a TMGI, a ProSe per packet priority level associated with the TMGI, etc. The relay WTRU may receive an evolved multimedia broadcast multicast service (eMBMS) data packet from a network. The eMBMS may be associated with the TMGI. The relay WTRU may apply the received ProSe per packet priority level associated with the TMGI to the received eMBMS data packet. The relay WTRU may relay the eMBMS data packet to the remote WTRU based on the ProSe per packet priority level. The relay WTRU may forward the eMBMS data packet to the remote WTRU via a PC5 interface.