WO2022028338A1 - 数据传输方法、终端及网络节点 - Google Patents
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- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
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Definitions
- the present application relates to the field of wireless communication technologies, and in particular, to a data transmission method, a terminal, and a network node.
- the Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) mode is used to transmit the Multimedia Broadcast Multicast Service (MBMS) service.
- MBMS service is a point-to-multipoint service, such as mobile TV, etc.
- MBSFN service transmission requires evolved NodeBs (evolved NodeBs, eNBs) of multiple cells in a certain MBSFN Area (MBSFN Area) to transmit the same data at the same time , so that the user equipment (User Equipment, UE) will not only not suffer from inter-cell interference when adjacent cells transmit data, but will also benefit from the superposition of signals from multiple cells.
- eNBs evolved NodeBs
- MBSFN Area MBSFN Area
- the UE receives signals from multiple eNBs and combines them , which can improve the signal-to-noise ratio and effectively improve the transmission efficiency of MBMS services.
- an MBMS-capable UE is only required to support receiving only one MBMS service (ie, service) at a time point.
- Existing technologies do not support simultaneous delivery of unicast and multicast/broadcast services (also referred to as broadcast or multicast services, multicast or broadcast services) to users.
- the research topic of single-cell MBMS is proposed in LTE-A, in which the single-cell MBMS service is transmitted on the Physical Downlink Shared Channel (PDSCH).
- the MBMS service is identified by a Temporary Mobile Group Identity (TMGI), and the TMGI is allocated by a broadcast multicast service center network element (Broadcast Multicast-Service Centre, BM-SC).
- TMGI Temporary Mobile Group Identity
- BM-SC Broadcast Multicast-Service Centre
- the application server notifies the UE of relevant service description information through application layer signaling: such as TMGI, service start time, etc.
- SC-PTM is another method that uses PDSCH to transmit broadcast services.
- the core networks of MBSFN and SC-PTM are the same.
- the Multicell/Multicast Coordination Entity determines to use MBSFN or SC-PTM to send broadcast services over the air interface.
- the terminal does not support receiving unicast and multicast/broadcast services at the same time, and the sending mode of one multicast/broadcast service is fixed.
- the embodiments of the present disclosure provide a data transmission method, a terminal, and a network node, which are used to solve the problem that the simultaneous transmission of unicast and multicast/broadcast services to the terminal is not supported, and the transmission mode of one multicast/broadcast service is fixed. problem.
- an embodiment of the present disclosure provides a data transmission method, which is applied to a network node, including:
- the first wireless channel is used to send the first data to the terminal
- the second wireless channel is used for sending second data to the terminal
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the second wireless channel is a unicast wireless channel, the other of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session
- the second data represents second data of the first PDU session or at least one QoS flow of the first PDU session.
- the second data is the same as the first data, or:
- the second data is a subset of the first data, or:
- the second data and the first data have no intersection, or:
- the second data and the first data are partially the same.
- configuring the first wireless channel and/or the second wireless channel for the first PDU session or configuring the first wireless channel and/or the second wireless channel for at least one QoS flow of the first PDU session includes:
- At least the first physical configuration is different from the second physical configuration
- the first radio channel and the second radio channel share one radio bearer or two independent radio bearers.
- the configuring at least one of the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel includes:
- configuring the first wireless channel and/or the second wireless channel for the first PDU session or configuring the first wireless channel and/or the second wireless channel for at least one QoS flow of the first PDU session, respectively includes the following: At least one of:
- first type information indicating the first PDU session of the terminal and/or at least one QoS flow of the first PDU session
- the first type refers to the service type of unicast, broadcast or multicast
- the second type refers to the type of sending mode of unicast, broadcast or multicast.
- the relevant parameters of the first PDCP layer and the second PDCP layer include at least one of security context information, security keys, integrity protection configuration information, header compression algorithm and header compression context information.
- the related parameters of the PDCP layer corresponding to the unicast wireless channels of the multiple first terminals are the same, and the related parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression context information.
- At least one of the first terminal is a terminal that receives the broadcast or multicast wireless channel data.
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the method also includes at least one of the following:
- Configuring the first PDU session through an RRC message configures the first wireless channel and/or the second wireless channel or the first wireless channel or the second wireless channel for at least one QoS flow of the first PDU session;
- Configure the first PDU session through the RRC message configure the first wireless channel and/or the second wireless channel or the first wireless channel for at least one QoS flow of the first PDU session, and delete the second wireless channel;
- Configuring the first PDU session through an RRC message configures a first wireless channel and/or a second wireless channel or a second wireless channel for at least one QoS flow of the first PDU session, and deletes the first wireless channel.
- the method before sending the second data to the terminal through the second wireless channel, the method further includes:
- sending the second data to the terminal through the second wireless channel includes:
- a first PDCP PDU including an IR packet is sent, and the first PDCP PDU is used to carry the second data.
- sending the second data to the terminal through the second wireless channel includes:
- the method further includes:
- the end packet is used to indicate that the data of the first PDU session or the data of at least one QoS flow of the first PDU session has been switched from the first wireless channel to the second wireless channel. bear.
- it also includes:
- the synchronization function is used for:
- Time information related to signaling and/or interaction and packet transmission and/or:
- the time information may be absolute and/or relative time information; or information of SFN, subframe, slot, mini-slot and/or time symbol.
- a synchronization protocol instance of the synchronization function is associated with a broadcast or multicast PDU session.
- the synchronization function is used to synchronize data packet transmission between the core network and/or the application layer and network nodes, and/or between network nodes;
- the synchronization function is an independent protocol layer, or the synchronization function is located in at least one protocol layer of SDAP, PDCP, RLC and MAC.
- the time information is the time information sent from the application layer or the core network, or the time information generated by the network node and used to synchronize the time information sent between the base stations.
- the synchronization function when used to add time information related to the transmission of the data packet in the data packet, the time information and the data are sent together in one data packet; and/or the time information Sent individually in a packet.
- the time information is sent by the CU to the DU; and/or:
- the time information is information converted by the CU into SFN, subframe, slot, mini-slot and/or time symbol for scheduling.
- the synchronization function is used for, after receiving the user data frame, to parse out the time information related to the transmission of the data packet added to the data packet, and/or to parse out the transmission and/or interaction and data in the signaling.
- Time information related to packet transmission use the time information to schedule user data or schedule in the MTCH scheduling period.
- the network node includes a base station of a first cell and a base station of a second cell, the first cell is a cell to which the first wireless channel belongs, and the second cell is a cell to which the second wireless channel belongs.
- the cell; the method also includes at least one of the following:
- the base station of the first cell informs the base station of the second cell of the packet sequence number that has been sent by the base station of the second cell and/or the packet sequence number successfully received by the UE, then the base station of the second cell uses the unicast connection to send a unicast connection to the UE that the first cell and the second cell are not synchronized. Bag;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache, and carries the time information corresponding to the packets sent;
- the base station of the first cell forwards the unsynchronized packets of the first cell and the second cell according to the received information
- the base station of the first cell forwards, according to the received information, the packet that is not synchronized between the first cell and the second cell, and that is not stored in the cache of the second cell;
- the UE informs the base station of the second cell of the sequence number of the data packet successfully received in the first cell, and then the base station of the second cell sends the unsynchronized packet of the first cell and the second cell to the UE by using the unicast connection;
- the UE maintains the connection with the first cell and the second cell at the same time, and does not interrupt the connection with the first cell until it has received the unsynchronized packet from the first cell and the second cell;
- the base station of the second cell informs the base station of the first cell that the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the buffer can optionally carry the time information for sending;
- the first cell informs the handover information in the handover information UE, then the UE maintains the connection with the first cell and the second cell at the same time, and interrupts the connection with the first cell until it has received the unsynchronized packet of the first cell and the second cell from the first cell;
- the UE After switching to the second cell, the UE continues to maintain the connection with the first cell until it finds that the packets received in the second cell and the packets received from the first cell are continuous or repeated, and then the connection with the first cell is interrupted.
- it also includes:
- resources are allocated to the terminal according to the concurrent demand information.
- the concurrent demand information includes at least one of the following: demand information of the unicast service being sent, demand information of the broadcast or multicast service being sent, demand information of the unicast service to be sent in the future, and demand information of the unicast service to be sent in the future.
- Demand information for broadcast or multicast services includes at least one of the following: demand information of the unicast service being sent, demand information of the broadcast or multicast service being sent, demand information of the unicast service to be sent in the future, and demand information of the unicast service to be sent in the future.
- the method before sending the second data to the terminal through the second wireless channel, the method further includes at least one of the following methods:
- condition or factor including at least one of the following:
- QoS Quality of Service
- QoE Quality of Service
- the UE uses a unicast radio channel
- the number of data packets that the UE fails to receive is greater than or equal to a certain threshold or the number of data packets that the UE successfully receives is less than or equal to a certain threshold, and the multicast transmission is switched to the unicast transmission;
- unicast transmission switches to multicast transmission.
- At least one of the following information is notified to the core network by the radio access network side, the UE, the big data analysis node, the artificial intelligence analysis node and/or the network management node:
- the number of participating UEs The number of participating UEs, the channel quality information, the state of the UE receiving data packets, and the selected transmission mode information.
- An embodiment of the present disclosure provides a data transmission method, applied to a terminal, including:
- the first wireless channel is used for receiving the first data sent by the network node through the first wireless channel
- the second wireless channel is used for receiving second data sent by the network node through the second wireless channel
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the second wireless channel is a unicast wireless channel, the other of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session
- the second data represents second data of the first PDU session or at least one QoS flow of the first PDU session.
- the second data is the same as the first data, or:
- the second data is a subset of the first data, or:
- the subset of the second data and the first data have no intersection, or:
- the second data and the first data are partially the same.
- establishing and/or configuring the first wireless channel corresponds to at least one of the first SDAP entity, the first PDCP configuration, the first RLC entity, the first MAC entity and the first physical layer;
- establishing and/or configuring the second wireless channel to correspond to at least one of the second SDAP entity, the second PDCP entity, the second RLC entity, the second MAC entity, and the second physical layer;
- At least the first physical layer and the second physical layer are independent;
- the first radio channel and the second radio channel share one radio bearer or two independent radio bearers.
- the establishing and/or configuring at least one of the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel including:
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second PDCP entity, the second RLC entity, the second MAC entity and the second physical layer; or:
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second PDCP entity, the second RLC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second RLC entity, the second MAC entity and the second physical layer; or:
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC configuration, and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second RLC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second MAC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second physical layer.
- the first wireless channel and/or the second wireless channel are established and/or configured for the first PDU session or the first wireless channel and/or the second wireless channel are respectively established and/or configured for at least one QoS flow of the first PDU session.
- the wireless channel and/or the second wireless channel including at least one of the following:
- the first type refers to the service type of unicast, broadcast or multicast
- the second type refers to the type of sending mode of unicast, broadcast or multicast.
- the related parameters of the first PDCP layer and the second PDCP layer are the same, and the related parameters include a security context. At least one of information, security key, integrity protection configuration information, header compression algorithm, and header compression context information.
- the relevant parameters of the PDCP layer corresponding to the unicast wireless channel of the terminal are the same as those of the first terminal, and the relevant parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression.
- the relevant parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression.
- At least one item of context information, both the first terminal and the terminal are terminals corresponding to the broadcast or multicast wireless channel.
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- it also includes at least one of the following:
- the method before the receiving the second data sent by the network node through the second wireless channel, the method further includes:
- the receiving the second data sent by the network node through the second wireless channel includes:
- a first PDCP PDU including an IR packet is received, and the first PDCP PDU is used to carry the second data.
- the receiving network node sending the second data to the terminal through the second wireless channel includes:
- the second PDCP PDU is used to carry the second data; wherein, the packet header of the second PDCP PDU includes information used to indicate encryption with a new key, or the second PDCP PDU PDUs are grouped using the logical channel identifier corresponding to the second wireless channel;
- the method further includes:
- Wireless channel bearer
- An embodiment of the present disclosure provides a data transmission method, which is applied to a network node, including:
- the first wireless channel is configured for the first PDU session; or: the first wireless channel is configured for at least one QoS flow of the first PDU session;
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session.
- the sending the first data to the terminal through the first wireless channel includes:
- At least one of a first SDAP configuration, a first PDCP configuration, a first RLC configuration, a first MAC configuration, and a first physical configuration corresponding to the first wireless channel is configured.
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the method also includes at least one of the following:
- the first wireless channel is deleted through an RRC message.
- the method before the sending the first data to the terminal through the first wireless channel, the method further includes:
- the second wireless channel and the first wireless channel correspond to the same PDU session configuration or at least one QoS flow of the same PDU session, and the second wireless channel is on other network wireless nodes.
- the obtaining relevant information of the second wireless channel includes:
- the sending the first data to the terminal through the first wireless channel includes:
- the method further includes:
- the end packet is used to indicate that the data of the first PDU session or the data of at least one QoS flow of the first PDU session has been switched from the first wireless channel to the second wireless channel. bear.
- the method also includes:
- the synchronization function is used for:
- Time information related to signaling and/or interaction and packet transmission and/or:
- the time information may be absolute and/or relative time information; or information of SFN, subframe, slot, mini-slot and/or time symbol.
- a synchronization protocol instance of the synchronization function is associated with a broadcast or multicast PDU session.
- the synchronization function is used to synchronize data packet transmission between the core network and/or the application layer and network nodes, and/or between network nodes;
- the synchronization function is an independent protocol layer, or the synchronization function is located in at least one protocol layer of SDAP, PDCP, RLC and MAC.
- the time information is the time information sent from the application layer or the core network, or the time information generated by the network node and used to synchronize the time information sent between the base stations.
- the synchronization function when used to add time information related to the transmission of the data packet in the data packet, the time information and the data are sent together in one data packet; and/or the time information Sent individually in a packet.
- the time information is sent by the CU to the DU; and/or:
- the time information is information converted by the CU into SFN, subframe, slot, mini-slot and/or time symbol for scheduling.
- the synchronization function is used for, after receiving the user data frame, to parse out the time information related to the transmission of the data packet added to the data packet, and/or to parse out the transmission and/or interaction and data in the signaling.
- Time information related to packet transmission use the time information to schedule user data or schedule in the MTCH scheduling period.
- the network node includes a base station of a first cell and a base station of a second cell, the first cell is a cell to which the first wireless channel belongs, and the second cell is a cell to which the second wireless channel belongs.
- the cell; the method also includes at least one of the following:
- the base station of the first cell informs the base station of the second cell of the packet sequence number that has been sent by the base station of the second cell and/or the packet sequence number successfully received by the UE, then the base station of the second cell uses the unicast connection to send a unicast connection to the UE that the first cell and the second cell are not synchronized. Bag;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache, and carries the time information corresponding to the packets sent;
- the base station of the first cell forwards the unsynchronized packets of the first cell and the second cell according to the received information
- the base station of the first cell forwards, according to the received information, the packet that is not synchronized between the first cell and the second cell, and that is not stored in the cache of the second cell;
- the UE informs the base station of the second cell of the sequence number of the data packet successfully received in the first cell, and then the base station of the second cell sends the unsynchronized packet of the first cell and the second cell to the UE by using the unicast connection;
- the UE maintains the connection with the first cell and the second cell at the same time, and does not interrupt the connection with the first cell until it has received the unsynchronized packet from the first cell and the second cell;
- the base station of the second cell informs the base station of the first cell that the sequence numbers of the next one or more packets to be sent and/or the sequence numbers of the packets still stored in the cache can optionally carry the time information for sending;
- the first cell informs the handover information in the handover information UE, then the UE maintains the connection with the first cell and the second cell at the same time, and interrupts the connection with the first cell until it has received the unsynchronized packet of the first cell and the second cell from the first cell;
- the UE After switching to the second cell, the UE continues to maintain the connection with the first cell until it finds that the packets received in the second cell and the packets received from the first cell are continuous or repeated, and then the connection with the first cell is interrupted.
- An embodiment of the present disclosure provides a data transmission method, which is applied to a network node, including:
- the first PDU session is used to send the third data of the second service to the terminal;
- the second PDU session is used to send the fourth data of the second service to the terminal;
- the second service is a broadcast or multicast service
- the first PDU session is a unicast PDU session, one of broadcast or multicast PDU sessions, and the second PDU session is a unicast PDU session, and the other one of broadcast or multicast PDU sessions;
- the unicast PDU session is separately established for all or part of the terminals receiving the second service.
- the fourth data is the same as the third data, or:
- the fourth data is a subset of the third data, or:
- the subset of the fourth data and the third data have no intersection, or:
- the fourth data and the third data are partially the same.
- the network node includes a core network, and sends the third data of the second service to the terminal through the first PDU session, and sends the fourth data of the second service to the terminal through the second PDU session, including:
- the core network determines the terminal in a broadcast or multicast group that uses the multicast PDU session established for the broadcast or multicast service to receive data, and the terminal that uses the unicast PDU session established for the broadcast or multicast service to receive data. ;and / or:
- some or all of the UEs in a broadcast or multicast group can either use the broadcast or multicast PDU session established for the broadcast or multicast service to receive data, or use the broadcast or multicast service at the same time. Established unicast PDU session to receive data.
- the network node includes a core network, and sends the third data of the second service to the terminal through the first PDU session, and sends the fourth data of the second service to the terminal through the second PDU session, including:
- the core network informs the terminal of the relationship between the first PDU session and the second PDU session:
- the core network When the core network configures a broadcast or multicast PDU session and a unicast PDU session of the same broadcast or multicast service for the terminal to receive data, the core network informs the terminal and the base station of the first PDU session and the second PDU session respectively. relationship between; or:
- the core network informs the base station of the relationship between the first PDU session and the second PDU session, and then the base station informs the terminal of the relationship between the first PDU session and the second PDU session; or:
- the core network informs the base station of the relationship between the first PDU session and the second PDU session, or the core informs the terminal of the relationship between the first PDU session and the second PDU session.
- the network node includes a core network, and sends the third data of the second service to the terminal through the first PDU session; and sends the fourth data of the second service to the terminal through the second PDU session, including:
- the core network informs the terminal of the receiving method of the first PDU session and the second PDU session:
- some or all of the terminals in a broadcast or multicast group can either use the broadcast or multicast PDU session established for the broadcast or multicast service to receive data, or use the broadcast or multicast service at the same time. established unicast PDU session to receive data;
- the data received by the terminal from the broadcast or multicast PDU session established for the broadcast or multicast service and the data received from the unicast PDU session established for the broadcast or multicast service are simultaneous or time-sharing.
- the network node includes a core network, and sends the third data of the second service to the terminal through the first PDU session, and sends the fourth data of the second service to the terminal through the second PDU session, including:
- the core network selects the PDU session type and/or specific time for the terminal to receive the broadcast or multicast service according to the quality requirements of the service, and/or the arrival characteristics of the service, and/or air interface channel conditions;
- the core network may obtain specific information from the UE side, the base station side and/or the network management side; the specific information includes at least one of the following: channel quality of the air interface; HARQ feedback of the terminal; ARQ feedback of the terminal; PDCP discard timing of the terminal
- the timeout condition of the device; the condition of the terminal receiving the data packet; the specific time is in the form of a bitmap time format or absolute/relative time information.
- the network node includes a core network, and sends the third data of the second service to the terminal through the first PDU session, and sends the fourth data of the second service to the terminal through the second PDU session, including:
- the core network informs the base station to select the type of PDU session for the UE to receive broadcast or multicast services, and then the base station informs the UE network to select the type of PDU session for the UE to receive broadcast or multicast services; or:
- the core network informs the base station to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service, and then the base station informs the UE network to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service; or:
- the core network informs the base station to select a PDU session type for the UE to receive broadcast or multicast services or the core informs the terminal to select a PDU session type for the UE to receive broadcast or multicast services; or:
- the core network informs the base station to select the PDU session type and specific time for the UE to receive broadcast or multicast services, or the core network informs the terminal to select the PDU session type and specific time for the UE to receive broadcast or multicast services.
- the third data of the second service is sent to the terminal through the first PDU session
- the fourth data of the second service is sent to the terminal through the second PDU session, including:
- the network node establishes a broadcast or multicast PDU session and a unicast PDU session for a UE for the same broadcast or multicast service to receive data, and activates the same broadcast or multicast through signaling or special data packets.
- the network node deactivates the broadcast or multicast PDU session and/or the unicast PDU session established for the same broadcast or multicast service through signaling or a special data packet;
- the network node may be a node on the side of the core network and/or the radio access network.
- the third data of the second service is sent to the terminal through the first PDU session
- the fourth data of the second service is sent to the terminal through the second PDU session, including:
- the broadcast or multicast PDU session established for the broadcast or multicast service is sent to the UE by the network node on the radio access network side using the point-to-point and/or point-to-multipoint delivery method; or:
- the PDU session type reported by the receiving terminal is the PDU session type used by the UE to receive multicast services determined by the UE itself according to the service quality requirements, and/or service arrival characteristics and/or air interface channel conditions.
- An embodiment of the present disclosure provides a data transmission method, applied to a terminal, including:
- two or more PDU sessions are established for the second service
- the first PDU session is used to send the third data of the second service to the terminal;
- the second PDU session is used to send the fourth data of the second service to the terminal;
- the second service is a broadcast or multicast service
- the first PDU session is a unicast PDU session, one of broadcast or multicast PDU sessions, and the second PDU session is a unicast PDU session, and the other one of broadcast or multicast PDU sessions;
- the unicast PDU session is separately established for all or part of the terminals receiving the second service.
- the fourth data is the same as the third data, or:
- the fourth data is a subset of the third data, or:
- the subset of the fourth data and the third data have no intersection, or:
- the fourth data and the third data are partially the same.
- An embodiment of the present disclosure provides a data transmission method, which is applied to a network node, including:
- the PDSCH includes a first transport block and a second transport block, wherein the first transport block is used to transmit data of a unicast service, and the second transport block is used to transmit data of a broadcast or multicast service. data.
- the method further includes:
- the first time slot interval is the time domain interval between the first HARQ feedback resource and the PDSCH
- the second time slot interval is the interval between the second HARQ feedback resource and the PDSCH time interval
- the first HARQ feedback resource is used for transmitting HARQ feedback information for the first transport block
- the second HARQ feedback resource is used for transmitting HARQ feedback information for the second transport block.
- the first information includes information of the first PUCCH set and information of the second PUCCH set; or,
- the first information includes information of the first PUCCH set and offset information between the first PUCCH set and the second PUCCH set;
- the first HARQ feedback resource is a resource in the first PUCCH set
- the second HARQ feedback resource is a resource in the second PUCCH set.
- the information of the first PUCCH set and/or the information of the second PUCCH set is identification information of a predetermined PUCCH set.
- An embodiment of the present disclosure provides a data transmission method, applied to a terminal, including:
- the method before receiving the PDSCH sent by the network node, the method further includes:
- the first time slot interval is the time domain interval between the first HARQ feedback resource and the PDSCH
- the second time slot interval is the interval between the second HARQ feedback resource and the PDSCH time interval
- the first HARQ feedback resource is used for transmitting HARQ feedback information for the first transport block
- the second HARQ feedback resource is used for transmitting HARQ feedback information for the second transport block.
- the first information includes information of the first PUCCH set and information of the second PUCCH set; or,
- the first information includes information of the first PUCCH set and offset information between the first PUCCH set and the second PUCCH set;
- the first HARQ feedback resource is a resource in the first PUCCH set
- the second HARQ feedback resource is a resource in the second PUCCH set.
- the information of the first PUCCH set and/or the information of the second PUCCH set is identification information of a predetermined PUCCH set.
- An embodiment of the present disclosure provides a data transmission method, which is applied to a network node, including:
- the data of the unicast service is sent to the terminal through the first BWP, and the data of the broadcast or multicast service is sent to the terminal through the second BWP.
- the first BWP is one or more dedicated activation BWPs
- the second BWP is an initial BWP, or the second BWP is a BWP that is associated with the initial BWP;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the method further includes:
- the third information is used to indicate an association relationship between the second BWP and the initial BWP.
- An embodiment of the present disclosure provides a data transmission method, applied to a terminal, including:
- the first BWP is one or more dedicated activation BWPs
- the second BWP is an initial BWP, or the second BWP is a BWP that is associated with the initial BWP;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the method before the data of the unicast service sent by the network node through the first BWP and the data of the broadcast or multicast service sent through the second BWP, the method further includes:
- the third information is used to indicate an association relationship between the second BWP and the initial BWP.
- Embodiments of the present disclosure also provide a network node, including:
- a wireless channel configuration module configured to configure the first wireless channel and/or the second wireless channel for the first PDU session, or configure the first wireless channel and/or the second wireless channel for at least one QoS flow of the first PDU session;
- the first wireless channel is used to send the first data to the terminal
- the second wireless channel is used for sending second data to the terminal
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the second wireless channel is a unicast wireless channel, the other of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session
- the second data represents second data of the first PDU session or at least one QoS flow of the first PDU session.
- the second data is the same as the first data, or:
- the second data is a subset of the first data, or:
- the second data and the first data have no intersection, or:
- the second data and the first data are partially the same.
- the wireless channel configuration module is configured to configure at least one of the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel. a configuration; configure at least one of a second SDAP configuration, a second PDCP configuration, a second RLC configuration, a second MAC configuration, and a second physical configuration corresponding to the second wireless channel;
- At least the first physical configuration is different from the second physical configuration
- the first radio channel and the second radio channel share one radio bearer or two independent radio bearers.
- the wireless channel configuration module is configured to configure the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel and configure the The second PDCP configuration, the second RLC configuration, the second MAC configuration, and the second physical configuration corresponding to the second wireless channel; or:
- the wireless channel configuration module is configured to configure the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel and configure the second wireless channel The corresponding second PDCP configuration, second RLC configuration, and second physical configuration; or:
- the wireless channel configuration module is configured to configure the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel and configure the second wireless channel The corresponding second RLC configuration, second MAC configuration and second physical configuration; or:
- the wireless channel configuration module is configured to configure the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel and configure the second wireless channel the corresponding second RLC configuration and second physical configuration; or:
- the wireless channel configuration module is configured to configure the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel and configure the second wireless channel the corresponding second MAC configuration and second physical configuration; or:
- the wireless channel configuration module is configured to configure the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel and configure the second wireless channel The corresponding second physical configuration.
- the wireless channel configuration module is configured to configure the first wireless channel and/or the second wireless channel for the first PDU session, or configure the first wireless channel and/or the first wireless channel for at least one QoS flow of the first PDU session. or a second wireless channel, including at least one of the following:
- first type information indicating the first PDU session of the terminal and/or at least one QoS flow of the first PDU session
- the first type refers to the service type of unicast, broadcast or multicast
- the second type refers to the type of sending mode of unicast, broadcast or multicast.
- the relevant parameters of the first PDCP layer and the second PDCP layer include at least one of security context information, security keys, integrity protection configuration information, header compression algorithm and header compression context information.
- the related parameters of the PDCP layer corresponding to the unicast wireless channels of the multiple first terminals are the same, and the related parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression context information.
- At least one of the first terminal is a terminal that receives the broadcast or multicast wireless channel data.
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the network node further includes at least one of the following:
- a first activation module configured to activate the first wireless channel or the second wireless channel through an RRC message, MAC CE and/or physical control signaling;
- a second activation module configured to activate the first wireless channel and the second wireless channel through an RRC message, MAC CE and/or physical control signaling;
- a third activation module configured to activate the first wireless channel and deactivate the second wireless channel through an RRC message, MAC CE and/or physical control signaling;
- a first configuration module configured to configure the first PDU session simultaneously through an RRC message to configure the first wireless channel and/or the second wireless channel or the first wireless channel and the second wireless channel for at least one QoS flow of the first PDU session aisle;
- a second configuration module configured to configure the first PDU session through an RRC message to configure the first wireless channel and/or the second wireless channel or the first wireless channel or the second wireless channel for at least one QoS flow of the first PDU session ;
- a third configuration module configured to configure the first PDU session through an RRC message, configure the first wireless channel and/or the second wireless channel or the first wireless channel for at least one QoS flow of the first PDU session, and delete the second wireless channel wireless channel;
- a fourth configuration module configured to configure the first PDU session through an RRC message, configure a first wireless channel and/or a second wireless channel or a second wireless channel for at least one QoS flow of the first PDU session, and delete the first wireless channel wireless channel.
- the network node further includes:
- a status report acquisition module configured to acquire a PDCP transmission status report of the first wireless channel.
- the second data sending module is configured to send a first PDCP PDU including an IR packet within a preset time period that starts to send the second data through the second wireless channel, and the first PDCP PDU includes an IR packet.
- the PDCP PDU is used to carry the second data.
- the second data sending module is configured to send a second PDCP PDU, and the second PDCP PDU is used to carry the second data; wherein, the packet header of the second PDCP PDU includes an indicator for indicating Information encrypted using the new key, or the second PDCP PDU is packaged using the logical channel identifier corresponding to the second wireless channel;
- the first data sending module is configured to send an end packet to the terminal when the second wireless channel and the first wireless channel belong to different cells, where the end packet is used to indicate the first PDU session data of the first PDU session or data of at least one QoS flow of the first PDU session has been switched from the first wireless channel to be carried by the second wireless channel.
- the network node further includes:
- the function body configuration module is configured to configure the synchronization function body on the network node
- the synchronization function is used for:
- Time information related to signaling and/or interaction and packet transmission and/or:
- the time information may be absolute and/or relative time information; or information of SFN, subframe, slot, mini-slot and/or time symbol.
- a synchronization protocol instance of the synchronization function is associated with a broadcast or multicast PDU session.
- the synchronization function is used to synchronize data packet transmission between the core network and/or the application layer and network nodes, and/or between network nodes;
- the synchronization function is an independent protocol layer, or the synchronization function is located in at least one protocol layer of SDAP, PDCP, RLC and MAC.
- the time information is the time information sent from the application layer or the core network, or the time information generated by the network node and used to synchronize the time information sent between the base stations.
- the synchronization function when used to add time information related to the transmission of the data packet in the data packet, the time information and the data are sent together in one data packet; and/or the time information Sent individually in a packet.
- the time information is sent by the CU to the DU; and/or:
- the time information is information converted by the CU into SFN, subframe, slot, mini-slot and/or time symbol for scheduling.
- the synchronization function is used for, after receiving the user data frame, to parse out the time information related to the transmission of the data packet added to the data packet, and/or to parse out the transmission and/or interaction and data in the signaling.
- Time information related to packet transmission use the time information to schedule user data or schedule in the MTCH scheduling period.
- the network node includes a base station of a first cell and a base station of a second cell, the first cell is a cell to which the first wireless channel belongs, and the second cell is a cell to which the second wireless channel belongs. the district;
- the base station of the first cell informs the base station of the second cell of the packet sequence number that has been sent by the base station of the second cell and/or the packet sequence number successfully received by the UE, then the base station of the second cell uses the unicast connection to send a unicast connection to the UE that the first cell and the second cell are not synchronized. Bag;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache, and carries the time information corresponding to the packets sent;
- the base station of the first cell forwards the unsynchronized packets of the first cell and the second cell according to the received information
- the base station of the first cell forwards, according to the received information, the packets that are not synchronized between the first cell and the second cell, and that are not stored in the cache of the second cell;
- the UE informs the base station of the second cell of the sequence number of the data packet successfully received in the first cell, and then the base station of the second cell sends the unsynchronized packet of the first cell and the second cell to the UE by using the unicast connection;
- the UE maintains the connection with the first cell and the second cell at the same time, and does not interrupt the connection with the first cell until it has received the unsynchronized packet from the first cell and the second cell;
- the base station of the second cell informs the base station of the first cell that the sequence numbers of the next one or more packets to be sent and/or the sequence numbers of the packets still stored in the cache can optionally carry the time information for sending;
- the first cell informs the handover information in the handover information UE, then the UE maintains the connection with the first cell and the second cell at the same time, and only interrupts the connection with the first cell until it has received the unsynchronized packet of the first cell and the second cell from the first cell;
- the UE After switching to the second cell, the UE continues to maintain the connection with the first cell until it finds that the packets received in the second cell and the packets received from the first cell are continuous or repeated, and then the connection with the first cell is interrupted.
- the network node further includes:
- An indication information sending module configured to send first indication information and/or second indication information to the terminal; wherein the first indication information is used to indicate the broadcast or multicast service being sent by the network node, and the second indication information is used to indicate the broadcast or multicast service being sent by the network node.
- the indication information is used to instruct the terminal to report concurrent demand information, where the concurrent demand information includes first concurrent demand information for unicast services and broadcast or multicast services and/or second concurrent demand information for multiple broadcast or multicast services ;
- resources are allocated to the terminal according to the concurrent demand information.
- the concurrent demand information includes at least one of the following: demand information of the unicast service being sent, demand information of the broadcast or multicast service being sent, demand information of the unicast service to be sent in the future, and demand information of the unicast service to be sent in the future.
- Demand information for broadcast or multicast services includes at least one of the following: demand information of the unicast service being sent, demand information of the broadcast or multicast service being sent, demand information of the unicast service to be sent in the future, and demand information of the unicast service to be sent in the future.
- the network node further includes:
- a determination module configured to determine whether there is a condition or factor for switching between the first wireless channel and the second wireless channel, the condition or factor includes at least one of the following:
- QoS Quality of Service
- QoE Quality of Service
- the UE uses a unicast radio channel
- the number of data packets that the UE fails to receive is greater than or equal to a certain threshold or the number of data packets that the UE successfully receives is less than or equal to a certain threshold, and the multicast transmission is switched to the unicast transmission;
- unicast transmission switches to multicast transmission.
- At least one of the following information is notified to the core network by the radio access network side, the UE, the big data analysis node, the artificial intelligence analysis node and/or the network management node:
- the number of participating UEs The number of participating UEs, the channel quality information, the state of the UE receiving data packets, and the selected transmission mode information.
- An embodiment of the present disclosure also provides a terminal, including:
- a first configuration information receiving module configured to receive the first configuration information sent by the network device
- a wireless channel establishment and/or configuration module configured to establish and/or configure the first wireless channel and/or the second wireless channel for the first PDU session or establish at least one QoS flow for the first PDU session according to the first configuration information and/or configuring the first wireless channel and/or the second wireless channel;
- the first wireless channel is used for receiving the first data sent by the network node through the first wireless channel
- the second wireless channel is used for receiving second data sent by the network node through the second wireless channel
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the second wireless channel is a unicast wireless channel, the other of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session
- the second data represents second data of the first PDU session or at least one QoS flow of the first PDU session.
- the second data is the same as the first data, or:
- the second data is a subset of the first data, or:
- the subset of the second data and the first data have no intersection, or:
- the second data and the first data are partially the same.
- it also includes:
- An establishment and/or configuration module configured to establish and/or configure the first wireless channel corresponding to at least one of the first SDAP entity, the first PDCP configuration, the first RLC entity, the first MAC entity and the first physical layer ; Establish and/or configure the second wireless channel corresponding to at least one of the second SDAP entity, the second PDCP entity, the second RLC entity, the second MAC entity and the second physical layer;
- At least the first physical layer and the second physical layer are independent;
- the first radio channel and the second radio channel share one radio bearer or two independent radio bearers.
- the establishment and/or configuration module is configured to establish and/or configure the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first corresponding to the first wireless channel.
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second PDCP entity, the second RLC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second RLC entity, the second MAC entity and the second physical layer; or:
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC configuration, and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second RLC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second MAC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second physical layer.
- the wireless channel establishment and/or configuration module is configured to establish and/or configure the first wireless channel and/or the second wireless channel for the first PDU session according to the first configuration information, or, for the first At least one QoS flow of the PDU session establishes and/or configures the first wireless channel and/or the second wireless channel, including at least one of the following:
- the first type refers to the service type of unicast, broadcast or multicast
- the second type refers to the type of sending mode of unicast, broadcast or multicast.
- the related parameters of the first PDCP layer and the second PDCP layer are the same, and the related parameters include a security context. At least one of information, security key, integrity protection configuration information, header compression algorithm, and header compression context information.
- the relevant parameters of the PDCP layer corresponding to the unicast wireless channel of the terminal are the same as those of the first terminal, and the relevant parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression.
- the relevant parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression.
- At least one item of context information, both the first terminal and the terminal are terminals corresponding to the broadcast or multicast wireless channel.
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- it further includes: a first processing module
- the first processing module is configured to receive an RRC message, MAC CE and/or physical control signaling sent by a network node for activating the first wireless channel or the second wireless channel, and activate the first wireless channel the wireless channel or the second wireless channel; and/or:
- the first processing module is configured to receive an RRC message, MAC CE and/or physical control signaling sent by a network node for activating the first wireless channel and the second wireless channel, and activate the first wireless channel channel and said second wireless channel; and/or:
- the first processing module is configured to receive an RRC message, MAC CE and/or physical control signaling sent by a network node for activating the first wireless channel and deactivating the second wireless channel, and activate the the first wireless channel and deactivate the second wireless channel; and/or:
- the first processing module is configured to receive an RRC message sent by a network node and used to establish and/or configure the first wireless channel and the second wireless channel of the first PDU session at the same time, and to establish and/or configure at the same time the first wireless channel and the second wireless channel of the first PDU session; and/or:
- the first processing module is configured to receive an RRC message sent by a network node for establishing and/or configuring a first wireless channel or a second wireless channel of the first PDU session, and to establish and/or configure the first wireless channel. the first wireless channel or the second wireless channel of a PDU session; and/or:
- the first processing module is configured to receive the first wireless channel sent by the network node and used to establish and/or configure the first PDU session through the RRC message, delete the RRC message of the second wireless channel, and establish and/or Or configure the first wireless channel of the first PDU session, and delete the second wireless channel; and/or:
- the first processing module is configured to receive a second wireless channel sent by a network node and used to establish and/or configure the first PDU session through an RRC message, delete the RRC message of the first wireless channel, and establish and/or Or configure the second wireless channel of the first PDU session, and delete the first wireless channel.
- it also includes:
- a status report sending module configured to send a PDCP status report of the first wireless channel.
- the receiving the second data sent by the network node through the second wireless channel includes:
- a first PDCP PDU including an IR packet is received, and the first PDCP PDU is used to carry the second data.
- the second data receiving module is configured to receive a second PDCP PDU, and the second PDCP PDU is used to carry the second data; wherein, the packet header of the second PDCP PDU includes an indicator for indicating Information encrypted using the new key, or the second PDCP PDU is packaged using the logical channel identifier corresponding to the second wireless channel;
- an end packet receiving module configured to receive an end packet sent by a network device, where the end packet is used to indicate that the data of the first PDU session or the data of at least one QoS flow of the first PDU session has been changed from the first PDU session.
- a wireless channel is switched to be carried by the second wireless channel.
- Embodiments of the present disclosure also provide a network node, including:
- a first data sending module configured to send the first data to the terminal through the first wireless channel
- the first wireless channel is configured for the first PDU session; or: the first wireless channel is configured for at least one QoS flow of the first PDU session;
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session.
- a configuration module configured to configure at least one of the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel configuration.
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- it also includes a second processing module:
- a second processing module configured to activate the first wireless channel through an RRC message, MAC CE and/or physical control signaling; and/or:
- a second processing module configured to deactivate the first wireless channel through an RRC message, MAC CE and/or physical control signaling; and/or:
- a second processing module configured to configure the first wireless channel through an RRC message
- the second processing module is configured to delete the first wireless channel through an RRC message.
- it also includes:
- an acquisition module configured to acquire relevant information of the second wireless channel
- the second wireless channel and the first wireless channel correspond to the same PDU session configuration or at least one QoS flow of the same PDU session, and the second wireless channel is on other network wireless nodes.
- the obtaining module is configured to obtain the data packet sending status information of the second wireless channel.
- the first data sending module is configured to send a first PDCP PDU, and the first PDCP PDU is used to carry the first data; wherein, the packet header of the first PDCP PDU includes an indicator for indicating Information encrypted using the new key, or the first PDCP PDU is packaged using the logical channel identifier corresponding to the first wireless channel;
- An end packet sending module configured to send an end packet to the terminal, where the end packet is used to indicate that data of the first PDU session or data of at least one QoS flow of the first PDU session has been switched from the first wireless channel to carried by the second wireless channel.
- it also includes:
- the synchronization function configuration module is configured to configure the synchronization function at the network node
- the synchronization function is used for:
- Time information related to signaling and/or interaction and packet transmission and/or:
- the time information may be absolute and/or relative time information; or information of SFN, subframe, slot, mini-slot and/or time symbol.
- a synchronization protocol instance of the synchronization function is associated with a broadcast or multicast PDU session.
- the synchronization function is used to synchronize data packet transmission between the core network and/or the application layer and network nodes, and/or between network nodes;
- the synchronization function is an independent protocol layer, or the synchronization function is located in at least one protocol layer of SDAP, PDCP, RLC and MAC.
- the time information is the time information sent from the application layer or the core network, or the time information generated by the network node and used to synchronize the time information sent between the base stations.
- the synchronization function when used to add time information related to the transmission of the data packet in the data packet, the time information and the data are sent together in one data packet; and/or the time information Sent individually in a packet.
- the time information is sent by the CU to the DU; and/or:
- the time information is information converted by the CU into SFN, subframe, slot, mini-slot and/or time symbol for scheduling.
- the synchronization function is used for, after receiving the user data frame, to parse out the time information related to the transmission of the data packet added to the data packet, and/or to parse out the transmission and/or interaction and data in the signaling.
- Time information related to packet transmission use the time information to schedule user data or schedule in the MTCH scheduling period.
- the network node includes a base station of a first cell and a base station of a second cell, the first cell is a cell to which the first wireless channel belongs, and the second cell is a cell to which the second wireless channel belongs. the district;
- the base station of the first cell informs the base station of the second cell of the packet sequence number that has been sent by the base station of the second cell and/or the packet sequence number successfully received by the UE, then the base station of the second cell uses the unicast connection to send a unicast connection to the UE that the first cell and the second cell are not synchronized. Bag;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache, and carries the time information corresponding to the packets sent;
- the base station of the first cell forwards the unsynchronized packets of the first cell and the second cell according to the received information
- the base station of the first cell forwards, according to the received information, the packet that is not synchronized between the first cell and the second cell, and that is not stored in the cache of the second cell;
- the UE informs the base station of the second cell of the sequence number of the data packet successfully received in the first cell, and then the base station of the second cell sends the unsynchronized packet of the first cell and the second cell to the UE by using the unicast connection;
- the UE maintains the connection with the first cell and the second cell at the same time, and does not interrupt the connection with the first cell until it has received the unsynchronized packet from the first cell and the second cell;
- the base station of the second cell informs the base station of the first cell that the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the buffer can optionally carry the time information for sending;
- the first cell informs the handover information in the handover information UE, then the UE maintains the connection with the first cell and the second cell at the same time, and interrupts the connection with the first cell until it has received the unsynchronized packet of the first cell and the second cell from the first cell;
- the UE After switching to the second cell, the UE continues to maintain the connection with the first cell until it finds that the packets received in the second cell and the packets received from the first cell are continuous or repeated, and then the connection with the first cell is interrupted.
- Embodiments of the present disclosure also provide a network node, including:
- a session establishment module configured to establish two or more PDU sessions for the second service
- the first PDU session is used to send the third data of the second service to the terminal;
- the second PDU session is used to send the fourth data of the second service to the terminal;
- the second service is a broadcast or multicast service
- the first PDU session is a unicast PDU session, one of broadcast or multicast PDU sessions, and the second PDU session is a unicast PDU session, and the other one of broadcast or multicast PDU sessions;
- the unicast PDU session is separately established for all or part of the terminals receiving the second service.
- the fourth data is the same as the third data, or:
- the fourth data is a subset of the third data, or:
- the subset of the fourth data and the third data have no intersection, or:
- the fourth data and the third data are partially the same.
- the network node includes a core network, and the core network includes a decision module;
- the decision module is configured to decide a terminal in a broadcast or multicast group that uses the multicast PDU session established for the broadcast or multicast service to receive data, and uses the unicast PDU session established for the broadcast or multicast service to receive data. Termination of data; and/or:
- the decision module is configured to decide the data received by the broadcast or multicast PDU session of the broadcast or multicast service in a broadcast or multicast service, and the data received by the unicast PDU session; and/or:
- the decision module is configured to decide that some or all of the UEs in a broadcast or multicast group can either use the broadcast or multicast PDU session established for the broadcast or multicast service to receive data, and can also use the broadcast or multicast PDU session established for the broadcast or multicast service at the same time.
- the multicast service establishes a unicast PDU session to receive data.
- the network node includes a core network
- the core network includes:
- a first notification module configured to notify the terminal of the relationship between the first PDU session and the second PDU session:
- the second notification module is configured to, when configuring a broadcast or multicast PDU session and a unicast PDU session of the same broadcast or multicast service for the terminal to receive data, the core network respectively informs the terminal and the base station that the first PDU session is the same as that of the unicast PDU session. describe the relationship between the second PDU sessions; or:
- a third notification module configured to notify the base station of the relationship between the first PDU session and the second PDU session, and then the base station notifies the terminal of the relationship between the first PDU session and the second PDU session;
- the fourth notification module is configured to notify the base station of the relationship between the first PDU session and the second PDU session or the core to notify the terminal of the relationship between the first PDU session and the second PDU session.
- the network node includes a core network
- the core network includes:
- the fifth notification module is configured to notify the terminal of the receiving mode of the first PDU session and the second PDU session:
- the decision module is configured to decide that some or all of the terminals in a broadcast or multicast group can either use the broadcast or multicast PDU session established for the broadcast or multicast service to receive data, or use the broadcast or multicast PDU session established for the broadcast or multicast service at the same time.
- the data received by the terminal from the broadcast or multicast PDU session established for the broadcast or multicast service and the data received from the unicast PDU session established for the broadcast or multicast service are simultaneous or time-sharing.
- the network node includes a core network
- the core network includes:
- a selection module configured to select a PDU session type and/or a specific time for the terminal to receive broadcast or multicast services according to the quality requirements of the service, and/or the arrival characteristics of the service, and/or air interface channel conditions;
- the core network may obtain specific information from the UE side, the base station side and/or the network management side; the specific information includes at least one of the following: channel quality of the air interface; HARQ feedback of the terminal; ARQ feedback of the terminal; PDCP discard timing of the terminal
- the timeout condition of the device; the condition of the terminal receiving the data packet; the specific time is in the form of a bitmap time format or absolute/relative time information.
- the network node includes a core network
- the core network includes:
- the sixth notifying module is configured to inform the base station to select a PDU session type for the UE to receive broadcast or multicast services, and then the base station informs the UE network to select a PDU session type for the UE to receive broadcast or multicast services; or:
- the seventh notification module is configured to notify the base station to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service, and then the base station informs the UE network to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service; or:
- an eighth notification module configured to notify the base station to select a PDU session type for the UE to receive broadcast or multicast services or the core to inform the terminal to select a PDU session type for the UE to receive broadcast or multicast services;
- the ninth notification module is configured to notify the base station to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service or the core network to notify the terminal to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service.
- the network node includes:
- the establishment module is configured to establish a broadcast or multicast PDU session and a unicast PDU session for a UE for the same broadcast or multicast service to receive data, and activate the same broadcast or group through signaling or special data packets.
- a deactivation module configured to deactivate the broadcast or multicast PDU session and/or the unicast PDU session established for the same broadcast or multicast service through signaling or special data packets;
- the network node may be a node on the side of the core network and/or the radio access network.
- the network node includes:
- a sending module configured as a broadcast or multicast PDU session established for a broadcast or multicast service, and the network node on the radio access network side sends it to the UE using a point-to-point and/or point-to-multipoint delivery method; or:
- the receiving module is configured to receive the PDU session type reported by the terminal, and the PDU session type is the type of the PDU session that the UE itself determines to receive the multicast service used by the UE according to the quality requirements of the service, and/or the arrival characteristics of the service and/or the air interface channel conditions. PDU session type.
- An embodiment of the present disclosure also provides a terminal, including:
- the second configuration information receiving module is configured to receive the second configuration information sent by the network side device
- a session establishment module configured to establish two or more PDU sessions for the second service according to the second configuration information
- the first PDU session is used to send the third data of the second service to the terminal;
- the second PDU session is used to send the fourth data of the second service to the terminal;
- the second service is a broadcast or multicast service
- the first PDU session is a unicast PDU session, one of broadcast or multicast PDU sessions, and the second PDU session is a unicast PDU session, and the other one of broadcast or multicast PDU sessions;
- the unicast PDU session is separately established for all or part of the terminals receiving the second service.
- the fourth data is the same as the third data, or:
- the fourth data is a subset of the third data, or:
- the subset of the fourth data and the third data have no intersection, or:
- the fourth data and the third data are partially the same.
- An embodiment of the present disclosure provides a network node, including:
- a simultaneous sending module is configured to send a PDSCH to the terminal, where the PDSCH includes a first transport block and a second transport block, wherein the first transport block is used to transmit data of a unicast service, and the second transport block is used to transmit Data of broadcast or multicast services.
- the network node further includes:
- a first information sending module configured to send first information to the terminal, where the first information is used to determine the first HARQ feedback resource and the second HARQ feedback resource;
- a second information sending module configured to send second information to the terminal, where the second information is used to determine the first time slot interval and the second time slot interval;
- the first time slot interval is the time domain interval between the first HARQ feedback resource and the PDSCH
- the second time slot interval is the interval between the second HARQ feedback resource and the PDSCH time interval
- the first HARQ feedback resource is used for transmitting HARQ feedback information for the first transport block
- the second HARQ feedback resource is used for transmitting HARQ feedback information for the second transport block.
- the first information includes information of the first PUCCH set and information of the second PUCCH set; or,
- the first information includes information of the first PUCCH set and offset information between the first PUCCH set and the second PUCCH set;
- the first HARQ feedback resource is a resource in the first PUCCH set
- the second HARQ feedback resource is a resource in the second PUCCH set.
- the information of the first PUCCH set and/or the information of the second PUCCH set is identification information of a predetermined PUCCH set.
- An embodiment of the present disclosure also provides a terminal, including:
- the simultaneous receiving module is configured to receive the PDSCH sent by the network node, the PDSCH includes a first transport block and a second transport block, wherein the first transport block is configured to transmit data of unicast services, and the second transport block is configured Data for transmitting broadcast or multicast services.
- the network node further includes:
- a first information receiving module configured to receive first information sent by the network node, where the first information is used to determine the first HARQ feedback resource and the second HARQ feedback resource;
- a second information receiving module configured to receive second information sent by the network node, where the second information is used to determine the first time slot interval and the second time slot interval;
- the first time slot interval is the time domain interval between the first HARQ feedback resource and the PDSCH
- the second time slot interval is the interval between the second HARQ feedback resource and the PDSCH time interval
- the first HARQ feedback resource is used for transmitting HARQ feedback information for the first transport block
- the second HARQ feedback resource is used for transmitting HARQ feedback information for the second transport block.
- the first information includes information of the first PUCCH set and information of the second PUCCH set; or,
- the first information includes information of the first PUCCH set and offset information between the first PUCCH set and the second PUCCH set;
- the first HARQ feedback resource is a resource in the first PUCCH set
- the second HARQ feedback resource is a resource in the second PUCCH set.
- the information of the first PUCCH set and/or the information of the second PUCCH set is identification information of a predetermined PUCCH set.
- Embodiments of the present disclosure also provide a network node, including:
- the frequency division sending module is configured to send the data of the unicast service to the terminal through the first BWP, and send the data of the broadcast or multicast service to the terminal through the second BWP.
- the first BWP is one or more dedicated activation BWPs
- the second BWP is an initial BWP, or the second BWP is a BWP that is associated with the initial BWP;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the network node further includes:
- a third message sending module configured to send a system message including third information when the second BWP is a BWP with an associated relationship with the initial BWP;
- the third information is used to indicate an association relationship between the second BWP and the initial BWP.
- An embodiment of the present disclosure also provides a terminal, including:
- the frequency division receiving module is configured to receive the data of the unicast service sent by the network node through the first BWP, and the data of the broadcast or multicast service sent through the second BWP.
- the first BWP is one or more dedicated activation BWPs
- the second BWP is an initial BWP, or the second BWP is a BWP that is associated with the initial BWP;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the network node further includes:
- a third message receiving module configured to receive a system message including the third information
- the third information is used to indicate an association relationship between the second BWP and the initial BWP.
- Embodiments of the present disclosure also provide a network node, including: a transceiver and a processor;
- the transceiver configured to configure the first wireless channel and/or the second wireless channel for the first PDU session or configure the first wireless channel and/or the second wireless channel for at least one QoS flow of the first PDU session;
- the first wireless channel is used to send the first data to the terminal
- the second wireless channel is used for sending the second data to the terminal
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the second wireless channel is a unicast wireless channel, the other of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session
- the second data represents second data of the first PDU session or at least one QoS flow of the first PDU session.
- the second data is the same as the first data, or:
- the second data is a subset of the first data, or:
- the second data and the first data have no intersection, or:
- the second data and the first data are partially the same.
- the transceiver is configured to configure at least one of a first SDAP configuration, a first PDCP configuration, a first RLC configuration, a first MAC configuration, and a first physical configuration corresponding to the first wireless channel; configuring at least one of a second SDAP configuration, a second PDCP configuration, a second RLC configuration, a second MAC configuration, and a second physical configuration corresponding to the second wireless channel;
- At least the first physical configuration is different from the second physical configuration
- the first radio channel and the second radio channel share one radio bearer or two independent radio bearers.
- the transceiver is configured to configure the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel and configure the second wireless channel.
- the second PDCP configuration, the second RLC configuration, the second MAC configuration, and the second physical configuration corresponding to the channel or:
- the transceiver is configured to configure the first wireless channel and/or the second wireless channel for the first PDU session or configure the first wireless channel and/or the second wireless channel for at least one QoS flow of the first PDU session.
- channel including at least one of the following:
- first type information indicating the first PDU session of the terminal and/or at least one QoS flow of the first PDU session
- the first type refers to the service type of unicast, broadcast or multicast
- the second type refers to the type of sending mode of unicast, broadcast or multicast.
- the relevant parameters of the first PDCP layer and the second PDCP layer include at least one of security context information, security keys, integrity protection configuration information, header compression algorithm and header compression context information.
- the related parameters of the PDCP layer corresponding to the unicast wireless channels of the multiple first terminals are the same, and the related parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression context information.
- At least one of the first terminal is a terminal that receives the broadcast or multicast wireless channel data.
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the transceiver is configured to activate the first wireless channel or the second wireless channel through an RRC message, MAC CE and/or physical control signaling; and/or:
- Configuring the first PDU session through an RRC message configures the first wireless channel and/or the second wireless channel or the first wireless channel or the second wireless channel for at least one QoS flow of the first PDU session; and/or:
- Configuring the first PDU session through an RRC message configures a first wireless channel and/or a second wireless channel or a second wireless channel for at least one QoS flow of the first PDU session, and deletes the first wireless channel.
- the transceiver is configured to obtain a PDCP transmission status report of the first wireless channel.
- the transceiver is configured to send a first PDCP PDU including an IR packet within a preset time period that starts to send the second data through the second wireless channel, and the first PDCP PDU is used for carry the second data.
- the transceiver is configured to send a second PDCP PDU, and the second PDCP PDU is used to carry the second data; wherein, the packet header of the second PDCP PDU includes a packet used to indicate the use of a new key. encrypted information, or the second PDCP PDU is packaged using the logical channel identifier corresponding to the second wireless channel;
- the transceiver is configured to send an end packet to the terminal, the end packet being used to indicate that the data of the first PDU session or the data of at least one QoS flow of the first PDU session has been switched from the first wireless channel to the The second wireless channel bears.
- the transceiver is configured to configure a synchronization function at a network node
- the synchronization function is used for:
- Time information related to signaling and/or interaction and packet transmission and/or:
- the time information may be absolute and/or relative time information; or information of SFN, subframe, slot, mini-slot and/or time symbol.
- a synchronization protocol instance of the synchronization function is associated with a broadcast or multicast PDU session.
- the synchronization function is used to synchronize data packet transmission between the core network and/or the application layer and network nodes, and/or between network nodes;
- the synchronization function is an independent protocol layer, or the synchronization function is located in at least one protocol layer of SDAP, PDCP, RLC and MAC.
- the time information is the time information sent from the application layer or the core network, or the time information generated by the network node and used to synchronize the time information sent between the base stations.
- the synchronization function when used to add time information related to the transmission of the data packet in the data packet, the time information and the data are sent together in one data packet; and/or the time information Sent individually in a packet.
- the time information is sent by the CU to the DU; and/or:
- the time information is information converted by the CU into SFN, subframe, slot, mini-slot and/or time symbol for scheduling.
- the synchronization function is used for, after receiving the user data frame, to parse out the time information related to the transmission of the data packet added to the data packet, and/or to parse out the transmission and/or interaction and data in the signaling.
- Time information related to packet transmission use the time information to schedule user data or schedule in the MTCH scheduling period.
- the network node includes a base station of a first cell and a base station of a second cell, the first cell is a cell to which the first wireless channel belongs, and the second cell is a cell to which the second wireless channel belongs.
- the cell; the transceiver is also configured to include at least one of the following:
- the base station of the first cell informs the base station of the second cell of the packet sequence number that has been sent by the base station of the second cell and/or the packet sequence number successfully received by the UE, then the base station of the second cell uses the unicast connection to send a unicast connection to the UE that the first cell and the second cell are not synchronized. Bag;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache, and carries the time information corresponding to the packets sent;
- the base station of the first cell forwards the unsynchronized packets of the first cell and the second cell according to the received information
- the base station of the first cell forwards, according to the received information, the packet that is not synchronized between the first cell and the second cell, and that is not stored in the cache of the second cell;
- the UE informs the base station of the second cell of the sequence number of the data packet successfully received in the first cell, and then the base station of the second cell sends the unsynchronized packet of the first cell and the second cell to the UE by using the unicast connection;
- the UE maintains the connection with the first cell and the second cell at the same time, and does not interrupt the connection with the first cell until it has received the unsynchronized packet from the first cell and the second cell;
- the base station of the second cell informs the base station of the first cell that the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the buffer can optionally carry the time information for sending;
- the first cell informs the handover information in the handover information UE, then the UE maintains the connection with the first cell and the second cell at the same time, and only interrupts the connection with the first cell until it has received the unsynchronized packet of the first cell and the second cell from the first cell;
- the UE After switching to the second cell, the UE continues to maintain the connection with the first cell until it finds that the packets received in the second cell and the packets received from the first cell are continuous or repeated, and then the connection with the first cell is interrupted.
- the transceiver is configured to send the first indication information and/or the second indication information to the terminal; wherein, the first indication information is used to indicate the broadcast or multicast service being sent by the network node, so the The second indication information is used to instruct the terminal to report concurrent demand information, and the concurrent demand information includes the first concurrent demand information of unicast services and broadcast or multicast services and/or the second concurrent demand information of multiple broadcast or multicast services. concurrent demand information;
- resources are allocated to the terminal according to the concurrent demand information.
- the concurrent demand information includes at least one of the following: demand information of the unicast service being sent, demand information of the broadcast or multicast service being sent, demand information of the unicast service to be sent in the future, and demand information of the unicast service to be sent in the future.
- Demand information for broadcast or multicast services includes at least one of the following: demand information of the unicast service being sent, demand information of the broadcast or multicast service being sent, demand information of the unicast service to be sent in the future, and demand information of the unicast service to be sent in the future.
- the processor is configured to determine whether there is a condition or factor for switching between the first wireless channel and the second wireless channel, and the condition or factor includes at least one of the following:
- QoS Quality of Service
- QoE Quality of Service
- the UE uses a unicast radio channel
- the number of data packets that the UE fails to receive is greater than or equal to a certain threshold or the number of data packets that the UE successfully receives is less than or equal to a certain threshold, and the multicast transmission is switched to the unicast transmission;
- unicast transmission switches to multicast transmission.
- At least one of the following information is notified to the core network by the radio access network side, the UE, the big data analysis node, the artificial intelligence analysis node and/or the network management node:
- the number of participating UEs The number of participating UEs, the channel quality information, the state of the UE receiving data packets, and the selected transmission mode information.
- Embodiments of the present disclosure also provide a terminal, including: a transceiver and a processor;
- the transceiver configured to receive the first configuration information sent by the network device
- the transceiver is configured to establish and/or configure a first wireless channel and/or a second wireless channel for the first PDU session or establish and/or configure at least one QoS flow for the first PDU session according to the first configuration information the first wireless channel and/or the second wireless channel;
- the first wireless channel is used for receiving the first data sent by the network node through the first wireless channel
- the second wireless channel is used for receiving second data sent by the network node through the second wireless channel
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the second wireless channel is a unicast wireless channel, the other of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session
- the second data represents second data of the first PDU session or at least one QoS flow of the first PDU session.
- the second data is the same as the first data, or:
- the second data is a subset of the first data, or:
- the subset of the second data and the first data have no intersection, or:
- the second data and the first data are partially the same.
- the processor is configured to establish and/or configure the first wireless channel to correspond to at least one of the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer.
- the second wireless channel corresponds to at least one of the second SDAP entity, the second PDCP entity, the second RLC entity, the second MAC entity and the second physical layer;
- At least the first physical layer and the second physical layer are independent;
- the first radio channel and the second radio channel share one radio bearer or two independent radio bearers.
- the processor is configured to establish and/or configure the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel and establish and /or configure the second PDCP entity, the second RLC entity, the second MAC entity and the second physical layer corresponding to the second wireless channel; or:
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second PDCP entity, the second RLC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second RLC entity, the second MAC entity and the second physical layer; or:
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC configuration, and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second RLC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second MAC entity and the second physical layer;
- Establishing and/or configuring the first SDAP entity, the first PDCP entity, the first RLC entity, the first MAC entity and the first physical layer corresponding to the first wireless channel corresponds to establishing and/or configuring the second wireless channel the second physical layer.
- the transceiver is configured to establish and/or configure the first wireless channel and/or the second wireless channel for the first PDU session or establish at least one QoS flow for the first PDU session according to the first configuration information and/or configuring the first wireless channel and/or the second wireless channel, including at least one of the following:
- the first type refers to the service type of unicast, broadcast or multicast
- the second type refers to the type of sending mode of unicast, broadcast or multicast.
- the related parameters of the first PDCP layer and the second PDCP layer are the same, and the related parameters include a security context. At least one of information, security key, integrity protection configuration information, header compression algorithm, and header compression context information.
- the relevant parameters of the PDCP layer corresponding to the unicast wireless channel of the terminal are the same as those of the first terminal, and the relevant parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression.
- the relevant parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression.
- At least one item of context information, both the first terminal and the terminal are terminals corresponding to the broadcast or multicast wireless channel.
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the transceiver is configured to receive an RRC message, MAC CE and/or physical control signaling sent by a network node to activate the first wireless channel or the second wireless channel, and activate the first wireless channel or the second wireless channel; and/or:
- a wireless channel and a second wireless channel and/or:
- the transceiver is configured to send a PDCP status report of the first wireless channel.
- the transceiver is configured to receive a first PDCP PDU including an IR packet within a preset time period that starts to receive the second data through the second wireless channel, and the first PDCP PDU uses for carrying the second data.
- the transceiver is configured to receive a second PDCP PDU, and the second PDCP PDU is used to carry the second data; wherein, the packet header of the second PDCP PDU includes a packet used to indicate the use of a new password. key encrypted information, or the second PDCP PDU is packaged using the logical channel identifier corresponding to the second wireless channel;
- the method further includes:
- Wireless channel bearer
- Embodiments of the present disclosure also provide a network node, including: a transceiver and a processor;
- the transceiver configured to send the first data to the terminal through the first wireless channel
- the first wireless channel is configured for the first PDU session; or: the first wireless channel is configured for at least one QoS flow of the first PDU session;
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session.
- the transceiver is configured to configure at least one of the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration and the first physical configuration corresponding to the first wireless channel .
- the BWP corresponding to the broadcast or multicast wireless channel includes a first BWP and/or a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the transceiver is configured to activate the first wireless channel through an RRC message, MAC CE and/or physical control signaling; and/or:
- the first wireless channel is deleted through an RRC message.
- the transceiver is configured to obtain relevant information of the second wireless channel
- the second wireless channel and the first wireless channel correspond to the same PDU session configuration or at least one QoS flow of the same PDU session, and the second wireless channel is on other network wireless nodes.
- the transceiver is configured to acquire data packet sending status information of the second wireless channel.
- the transceiver is configured to send a first PDCP PDU, and the first PDCP PDU is used to carry the first data; wherein, the packet header of the first PDCP PDU includes a packet used to indicate the use of a new password. key encrypted information, or the first PDCP PDU is packaged using the logical channel identifier corresponding to the first wireless channel; or,
- the transceiver is configured to send an end packet to the terminal, where the end packet is used to indicate that data of the first PDU session or data of at least one QoS flow of the first PDU session has been switched from the first wireless channel to carried by the second wireless channel.
- the transceiver is configured to configure a synchronization function at a network node
- the synchronization function is used for:
- Time information related to signaling and/or interaction and packet transmission and/or:
- the time information may be absolute and/or relative time information; or information of SFN, subframe, slot, mini-slot and/or time symbol.
- a synchronization protocol instance of the synchronization function is associated with a broadcast or multicast PDU session.
- the synchronization function is used for synchronization of packet transmission between the core network and/or the application layer and the network node, and/or between the network nodes;
- the synchronization function is an independent protocol layer, or the synchronization function is located in at least one protocol layer of SDAP, PDCP, RLC and MAC.
- the time information is the time information sent from the application layer or the core network, or the time information generated by the network node and used to synchronize the time information sent between the base stations.
- the synchronization function when used to add time information related to the transmission of the data packet in the data packet, the time information and the data are sent together in one data packet; and/or the time information Sent individually in a packet.
- the time information is sent by the CU to the DU; and/or:
- the time information is information converted by the CU into SFN, subframe, slot, mini-slot and/or time symbol for scheduling.
- the synchronization function is used for, after receiving the user data frame, to parse out the time information related to the transmission of the data packet added to the data packet, and/or to parse out the transmission and/or interaction and data in the signaling.
- Time information related to packet transmission use the time information to schedule user data or schedule in the MTCH scheduling period.
- the network node includes a base station of a first cell and a base station of a second cell, the first cell is a cell to which the first wireless channel belongs, and the second cell is a cell to which the second wireless channel belongs.
- Residential area also includes at least one of the following:
- the base station of the first cell informs the base station of the second cell of the packet sequence number that has been sent by the base station of the second cell and/or the packet sequence number successfully received by the UE, then the base station of the second cell uses the unicast connection to send a unicast connection to the UE that the first cell and the second cell are not synchronized. Bag;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache, and carries the time information corresponding to the packets sent;
- the base station of the first cell forwards the unsynchronized packets of the first cell and the second cell according to the received information
- the base station of the first cell forwards, according to the received information, the packet that is not synchronized between the first cell and the second cell, and that is not stored in the cache of the second cell;
- the UE informs the base station of the second cell of the sequence number of the data packet successfully received in the first cell, and then the base station of the second cell sends the unsynchronized packet of the first cell and the second cell to the UE by using the unicast connection;
- the UE maintains the connection with the first cell and the second cell at the same time, and does not interrupt the connection with the first cell until it has received the unsynchronized packet from the first cell and the second cell;
- the base station of the second cell informs the base station of the first cell that the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the buffer can optionally carry the time information for sending;
- the first cell informs the handover information in the handover information UE, then the UE maintains the connection with the first cell and the second cell at the same time, and interrupts the connection with the first cell until it has received the unsynchronized packet of the first cell and the second cell from the first cell;
- the UE After switching to the second cell, the UE continues to maintain the connection with the first cell until it finds that the packets received in the second cell and the packets received from the first cell are continuous or repeated, and then the connection with the first cell is interrupted.
- Embodiments of the present disclosure also provide a network node, including: a transceiver and a processor;
- the transceiver configured to establish two or more PDU sessions for the second service
- the first PDU session is used to send the third data of the second service to the terminal;
- the second PDU session is used to send the fourth data of the second service to the terminal;
- the second service is a broadcast or multicast service
- the first PDU session is a unicast PDU session, one of broadcast or multicast PDU sessions, and the second PDU session is a unicast PDU session, and the other one of broadcast or multicast PDU sessions;
- the unicast PDU session is separately established for all or part of the terminals receiving the second service.
- the fourth data is the same as the third data, or:
- the fourth data is a subset of the third data, or:
- the subset of the fourth data and the third data have no intersection, or:
- the fourth data and the third data are partially the same.
- the network node includes a core network
- the processor is configured to determine a terminal in a broadcast or multicast group that uses a multicast PDU session established for a broadcast or multicast service to receive data, and uses a broadcast or multicast group to receive data.
- a unicast PDU session established by a multicast service to receive data and/or:
- UEs in a broadcast or multicast group can either receive data using the broadcast or multicast PDU session established for the broadcast or multicast service, and can also use the unicast established for the broadcast or multicast service at the same time. PDU session to receive data.
- the network node includes a core network
- the transceiver is configured to inform the terminal of the relationship between the first PDU session and the second PDU session:
- the terminal and the base station are respectively informed of the relationship between the first PDU session and the second PDU session ;or:
- the base station is informed of the relationship between the first PDU session and the second PDU session, or the terminal is informed of the relationship between the first PDU session and the second PDU session.
- the network node includes a core network
- the transceiver is configured to inform the terminal of the receiving mode of the first PDU session and the second PDU session:
- the processor is configured to determine that some or all of the terminals in a broadcast or multicast group can either use the broadcast or multicast PDU session established for the broadcast or multicast service to receive data, or can use the broadcast or group
- the unicast PDU session established by the broadcast service is used to receive data;
- the data received by the terminal from the broadcast or multicast PDU session established for the broadcast or multicast service and the data received from the unicast PDU session established for the broadcast or multicast service are simultaneous or time-sharing.
- the network node includes a core network
- the processor is configured to select PDUs for the terminal to receive broadcast or multicast services according to service quality requirements, and/or service arrival characteristics, and/or air interface channel conditions Type of session and/or specific time;
- the core network may obtain specific information from the UE side, the base station side and/or the network management side; the specific information includes at least one of the following: channel quality of the air interface; HARQ feedback of the terminal; ARQ feedback of the terminal; PDCP discard timing of the terminal
- the timeout condition of the device; the condition of the terminal receiving the data packet; the specific time is in the form of a bitmap time format or absolute/relative time information.
- the network node includes a core network
- the transceiver is configured to inform the base station to select a PDU session type for the UE to receive broadcast or multicast services, and then the base station to inform the UE network to select a PDU for the UE to receive broadcast or multicast services.
- Session kind or:
- the base station informs the UE network to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service;
- the base station is informed to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service, or the core network informs the terminal to select the type and specific time of the PDU session for the UE to receive the broadcast or multicast service.
- the transceiver is configured to establish a broadcast or multicast PDU session and a unicast PDU session for a UE for the same broadcast or multicast service to receive data, and activate the required use through signaling or special data packets. Broadcast or multicast PDU sessions and/or unicast PDU sessions established for the same broadcast or multicast service;
- the transceiver is configured to deactivate the broadcast or multicast PDU session and/or the unicast PDU session established for the same broadcast or multicast service through signaling or special data packets;
- the network node may be a node on the side of the core network and/or the radio access network.
- the transceiver is configured as a broadcast or multicast PDU session established for a broadcast or multicast service, and the network node on the radio access network side sends it to the UE using a point-to-point and/or point-to-multipoint delivery method; or :
- the PDU session type reported by the receiving terminal is the PDU session type used by the UE to receive multicast services determined by the UE itself according to the service quality requirements, and/or service arrival characteristics and/or air interface channel conditions.
- Embodiments of the present disclosure also provide a terminal, including: a transceiver and a processor;
- the transceiver configured to receive the second configuration information sent by the network side device
- the transceiver is configured to establish two or more PDU sessions for the second service according to the second configuration information
- the first PDU session is used to send the third data of the second service to the terminal;
- the second PDU session is used to send the fourth data of the second service to the terminal;
- the second service is a broadcast or multicast service
- the first PDU session is a unicast PDU session, one of broadcast or multicast PDU sessions, and the second PDU session is a unicast PDU session, and the other one of broadcast or multicast PDU sessions;
- the unicast PDU session is separately established for all or part of the terminals receiving the second service.
- the fourth data is the same as the third data, or:
- the fourth data is a subset of the third data, or:
- the subset of the fourth data and the third data have no intersection, or:
- the fourth data and the third data are partially the same.
- Embodiments of the present disclosure also provide a network node, including: a transceiver and a processor;
- the transceiver is configured to send a PDSCH to the terminal, where the PDSCH includes a first transport block and a second transport block, wherein the first transport block is used for transmitting data of unicast services, and the second transport block is used for Data that transmits broadcast or multicast services.
- the transceiver is configured to send first information to the terminal, where the first information is used to determine the first HARQ feedback resource and the second HARQ feedback resource; and/or,
- the first time slot interval is the time domain interval between the first HARQ feedback resource and the PDSCH
- the second time slot interval is the interval between the second HARQ feedback resource and the PDSCH time interval
- the first HARQ feedback resource is used for transmitting HARQ feedback information for the first transport block
- the second HARQ feedback resource is used for transmitting HARQ feedback information for the second transport block.
- the first information includes information of the first PUCCH set and information of the second PUCCH set; or,
- the first information includes information of the first PUCCH set and offset information between the first PUCCH set and the second PUCCH set;
- the first HARQ feedback resource is a resource in the first PUCCH set
- the second HARQ feedback resource is a resource in the second PUCCH set.
- the information of the first PUCCH set and/or the information of the second PUCCH set is identification information of a predetermined PUCCH set.
- Embodiments of the present disclosure also provide a terminal, including: a transceiver and a processor;
- the transceiver is configured to receive a PDSCH sent by a network node, the PDSCH includes a first transport block and a second transport block, wherein the first transport block is used to transmit data of a unicast service, and the second transport block Data used to transmit broadcast or multicast services.
- the transceiver is configured to receive first information sent by the network node, where the first information is used to determine the first HARQ feedback resource and the second HARQ feedback resource; and/or,
- the first time slot interval is the time domain interval between the first HARQ feedback resource and the PDSCH
- the second time slot interval is the interval between the second HARQ feedback resource and the PDSCH time interval
- the first HARQ feedback resource is used for transmitting HARQ feedback information for the first transport block
- the second HARQ feedback resource is used for transmitting HARQ feedback information for the second transport block.
- the first information includes information of the first PUCCH set and information of the second PUCCH set; or,
- the first information includes information of the first PUCCH set and offset information between the first PUCCH set and the second PUCCH set;
- the first HARQ feedback resource is a resource in the first PUCCH set
- the second HARQ feedback resource is a resource in the second PUCCH set.
- the information of the first PUCCH set and/or the information of the second PUCCH set is identification information of a predetermined PUCCH set.
- Embodiments of the present disclosure also provide a network node, including: a transceiver and a processor;
- the transceiver is configured to send the data of the unicast service to the terminal through the first BWP, and to send the data of the broadcast or multicast service to the terminal through the second BWP.
- the first BWP is one or more dedicated activation BWPs
- the second BWP is an initial BWP, or the second BWP is a BWP that is associated with the initial BWP;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the transceiver is configured to send a system message including the third information when the second BWP is a BWP with an associated relationship with the initial BWP;
- the third information is used to indicate an association relationship between the second BWP and the initial BWP.
- Embodiments of the present disclosure also provide a terminal, including: a transceiver and a processor;
- the transceiver is configured to receive unicast service data sent by the network node through the first BWP, and broadcast or multicast service data sent through the second BWP.
- the first BWP is one or more dedicated activation BWPs
- the second BWP is an initial BWP, or the second BWP is a BWP that is associated with the initial BWP;
- the configuration of the initial BWP is: the initial downlink BWP broadcast in SIB1, and/or the initial downlink BWP in the serving cell configuration, and/or the initial BWP corresponding to coreset 0.
- the transceiver is configured to receive a system message including the third information
- the third information is used to indicate an association relationship between the second BWP and the initial BWP.
- An embodiment of the present disclosure further provides a terminal, including a memory, a processor, and a program stored on the memory and executable on the processor; when the processor executes the program, any of the foregoing applications can be implemented. Steps in a data transmission method of a terminal.
- An embodiment of the present disclosure further provides a network node, including a memory, a processor, and a program stored on the memory and executable on the processor; the processor implements any of the foregoing applications when executing the program Steps in a data transmission method for a network node.
- Embodiments of the present disclosure also provide a readable storage medium, on which a program is stored, and when the program is executed by a processor, implements the steps in any of the foregoing data transmission methods.
- a flexible technology for using unicast and broadcast or multicast is provided, that is, the transmission mode of multicast or broadcast service can be switched from broadcast or multicast to unicast, or from unicast. Switching to broadcast or multicast mode, the data of the same service can also be transmitted through unicast mode and broadcast or multicast mode at the same time.
- FIG. 1 is a schematic flowchart of a data transmission method in an embodiment of the present disclosure
- FIG. 2 is a schematic diagram of a cross-cell scenario of handover/dual connectivity in an embodiment of the present disclosure
- FIG. 3 is a schematic diagram of a scenario in a cell in an embodiment of the present disclosure, or, Cell2 and Cell1 are in one base station; or a scenario in which the base stations of Cell2 and Cell1 are connected through rational backhaul;
- FIG. 4 is a schematic diagram of a cross-cell scenario of handover/dual connectivity in an embodiment of the present disclosure
- FIG. 5 is a schematic diagram of a scenario in a cell in an embodiment of the present disclosure, or, Cell2 and Cell1 are in one base station; or a scenario in which the base stations of Cell2 and Cell1 are connected through rational backhaul;
- FIG. 6 is a schematic diagram of a cross-cell scenario of handover/dual connectivity in an embodiment of the present disclosure
- FIG. 7 is a schematic diagram of a cross-cell scenario of handover/dual connectivity in an embodiment of the present disclosure
- FIG. 8a is a schematic flowchart of a data transmission method in an embodiment of the disclosure.
- 8b is a schematic flowchart of a data transmission method in an embodiment of the disclosure.
- FIG. 9 is a schematic flowchart of a data transmission method in an embodiment of the present disclosure.
- FIG. 10 is a schematic diagram of transmitting broadcast or multicast service data through a unicast PDU session and a broadcast or multicast session;
- FIG. 11 is a schematic flowchart of a data transmission method in an embodiment of the disclosure.
- 13 is a schematic diagram of two TBs in one PDSCH corresponding to one HARQ feedback resource
- 15 is a schematic flowchart of a data transmission method in an embodiment of the disclosure.
- 16 is a schematic flowchart of a data transmission method in an embodiment of the disclosure.
- 17 is a schematic diagram of realizing simultaneous data transmission of unicast service and broadcast or multicast service by means of BWP frequency division in an embodiment of the present disclosure
- 18 is a schematic diagram of the simultaneous existence of unicast mode and broadcast or multicast and flexible switching
- FIG. 20 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 21a is a schematic structural diagram of a terminal in an embodiment of the disclosure.
- 21b is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 22 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 23 is a schematic structural diagram of a terminal in an embodiment of the present disclosure.
- FIG. 24 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 25 is a schematic structural diagram of a terminal in an embodiment of the disclosure.
- FIG. 26 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 27 is a schematic structural diagram of a terminal in an embodiment of the present disclosure.
- FIG. 28 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 29a is a schematic structural diagram of a terminal in an embodiment of the disclosure.
- 29b is a schematic structural diagram of a network node according to an embodiment of the disclosure.
- FIG. 30 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 31 is a schematic structural diagram of a terminal in an embodiment of the disclosure.
- FIG. 32 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 33 is a schematic structural diagram of a terminal in an embodiment of the disclosure.
- 34 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 35 is a schematic structural diagram of a terminal in an embodiment of the present disclosure.
- 36 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 37 is a schematic structural diagram of a terminal in an embodiment of the present disclosure.
- FIG. 38 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 39 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 40 is a schematic structural diagram of a terminal in an embodiment of the present disclosure.
- 41 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 42 is a schematic structural diagram of a terminal in an embodiment of the present disclosure.
- FIG. 43 is a schematic structural diagram of a network node in an embodiment of the disclosure.
- FIG. 44 is a schematic structural diagram of a terminal in an embodiment of the disclosure.
- Radio Access Network for broadcast/multicast for terminals in the connected state (RRC CONNECTED); designate a group scheduling mechanism to allow UEs to receive broadcast/multicast services; This goal includes specifying the necessary enhancements required to achieve simultaneous operation with unicast reception.
- RRC CONNECTED Radio Access Network
- FIG. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present disclosure. The method is applied to a network node and includes the following steps:
- a network node in this disclosure includes at least one of the following: a base station, a centralized unit (CU), a distribution unit (DU), a relay, an integrated IAB node for access and backhaul, a remote radio unit BBU, and a baseband processing unit (RRU), Multicast Coordinating Entity (MCE), Broadcast Multicast-Service Centre (BM-SC) and core network.
- a base station a centralized unit (CU), a distribution unit (DU), a relay, an integrated IAB node for access and backhaul, a remote radio unit BBU, and a baseband processing unit (RRU), Multicast Coordinating Entity (MCE), Broadcast Multicast-Service Centre (BM-SC) and core network.
- a base station includes at least one of the following: a base station, a centralized unit (CU), a distribution unit (DU), a relay, an integrated IAB node for access and backhaul, a remote radio unit BBU, and a baseband processing unit (RRU), Multicast Coordinating
- Step 11 configure the first wireless channel and/or the second wireless channel for the first PDU session, or configure the first wireless channel and/or the same at least one quality of service (Quality of Service, QoS) flow of the first PDU session or a second wireless channel;
- QoS Quality of Service
- the first wireless channel is used to send the first data to the terminal
- the second wireless channel is used for sending the second data to the terminal
- the first wireless channel is one of a unicast wireless channel, a broadcast or multicast wireless channel
- the second wireless channel is a unicast wireless channel, and the other of a broadcast or multicast wireless channel.
- the network node may be the same network node, or may be different network nodes.
- the network nodes corresponding to the different cells may be different.
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session
- the second data represents second data of the first PDU session or at least one QoS flow of the first PDU session.
- the second wireless channel and the first wireless channel belong to the same cell or different cells.
- the sending of the first data to the terminal through the first wireless channel and the sending of the second data to the terminal through the second wireless channel may be performed simultaneously or not simultaneously. For example, firstly send the first data to the terminal through the first wireless channel, and then switch to sending the second data to the terminal through the second wireless channel. That is, the data of the first PDU session or at least one QoS flow of the first PDU session can be switched from unicast to broadcast or multicast, and can also be switched from broadcast or multicast to unicast.
- the first data and the second data can be the same, that is, they can be sent through a single
- the data of the same PDU session or at least one QoS flow of the same PDU session is sent in the broadcast mode and the broadcast or multicast mode.
- a flexible technology for using unicast and broadcast or multicast is provided, that is, the transmission mode of multicast or broadcast service can be switched from broadcast or multicast to unicast, or from unicast. Switching to broadcast or multicast mode, the data of the same service can also be transmitted through unicast mode and broadcast or multicast mode at the same time.
- the data of the same service refers to the data of the same PDU session or at least one QoS flow of the same PDU session.
- the Service Data Adaption Protocol (SDAP) layer is responsible for mapping QoS flows to corresponding wireless channels, and one or more QoS flows can be mapped to the same wireless channel, but A QoS flow can only be mapped to one wireless channel.
- one broadcast or multicast service (that is, the first PDU session or at least one QoS flow of the first PDU session) may be mapped to two wireless channels (one unicast and one multicast or broadcast), Or map to more than two wireless channels.
- the switching of the first channel and the second channel in the present disclosure and whether to use them jointly can be controlled by the base station, the centralized unit (CU), the distribution unit (DU), the Multicast Coordinating Entity (MCE), the multicast control Unit (Multicast Control Entity, MCoE) and Broadcast Multicast Service Center (Broadcast Multicast-Service Centre, BM-SC), the core network and at least one node in the terminal to decide.
- the base station the centralized unit (CU), the distribution unit (DU), the Multicast Coordinating Entity (MCE), the multicast control Unit (Multicast Control Entity, MCoE) and Broadcast Multicast Service Center (Broadcast Multicast-Service Centre, BM-SC)
- MCE Multicast Coordinating Entity
- MCoE Multicast Control Entity
- BM-SC Broadcast Multicast-Service Centre
- the second data is the same as the first data, or:
- the second data is a subset of the first data, or:
- the second data and the first data have no intersection, or:
- the second data and the first data are partially the same.
- the second data and the first data are the same, which means that the network node simultaneously enables sending the same first data and the second data through the first wireless channel and the second wireless channel.
- the second data is a subset of the first data.
- the network side enables the first data transmitted through the first wireless channel to be the data sent by multicast, and the second data is transmitted through the second wireless channel. , which is the data sent by multicast.
- the second data is partially the same as the first data, which means that after the data of the first service sent to the terminal through the second wireless channel is enabled, part of the data that has been sent through the first wireless channel will be repeatedly sent to avoid data loss , or means that after the sending of the second data to the terminal through the second wireless channel is enabled, the first data is kept to be sent to the terminal through the first wireless channel for a period of time, and then the first wireless channel is deactivated.
- configuring the first wireless channel and/or the second wireless channel for the first PDU session or configuring the first wireless channel and/or the second wireless channel for at least one QoS flow of the first PDU session includes:
- At least the first physical configuration is different from the second physical configuration.
- the first wireless channel corresponds to at least one of the first SDAP layer, the first PDCP layer, the first RLC layer, the first MAC layer and the first physical layer;
- the second wireless channel corresponds to the first SDAP layer at least one of the layer, the second PDCP layer, the second RLC layer, the second MAC layer, and the second physical layer;
- the second wireless channel and the first wireless channel belong to the same cell, at least the configurations of the first physical layer and the second physical layer are different;
- the first radio channel and the second radio channel share one radio bearer or two independent radio bearers.
- the second SDAP layer can be shared with the first SDAP layer
- the second PDCP layer can be shared with the first PDCP layer
- the second RLC layer can be shared with the first RLC layer
- the second MAC layer can be shared with the first MAC layer shared.
- the first wireless channel and the second wireless channel may correspond to the same SDAP layer
- the first wireless channel and the second wireless channel may correspond to the same PDCP layer
- the first wireless channel and the second wireless channel may correspond to the same RLC layer
- the first wireless channel and the second wireless channel may correspond to the same RLC layer.
- the wireless channel and the second wireless channel may correspond to the same MAC layer.
- FIG. 2 shows one of the cross-cell scenarios of handover/dual connectivity.
- FIG. 4 shows another cross-cell scenario of handover/dual connectivity.
- FIG. 6 shows a third handover/dual connectivity cross-cell scenario.
- FIG. 7 shows the fourth handover/dual connectivity cross-cell scenario.
- the configuring at least one of the first SDAP configuration, the first PDCP configuration, the first RLC configuration, the first MAC configuration, and the first physical configuration corresponding to the first wireless channel includes:
- configuring the first wireless channel and/or the second wireless channel for the first PDU session or configuring the first wireless channel and/or the second wireless channel for at least one QoS flow of the first PDU session respectively includes the following: At least one of:
- first type information indicating the first PDU session of the terminal and/or at least one QoS flow of the first PDU session
- the first type refers to the service type of unicast, broadcast or multicast
- the second type refers to the type of sending mode of unicast, broadcast or multicast.
- one broadcast or multicast service (that is, one PDU session or at least one QoS flow of one PDU session) can be mapped to two wireless channels (one unicast and one multicast), that is, one broadcast or one Multicast services correspond to two separate sets or subsets of protocol functions (that is, all or subsets of SDAP, PDCP, RLC, MAC, and physical layers), and these two separate sets or subsets of protocol functions correspond to unicast configuration and Broadcast or multicast configuration, wherein the first radio channel and the second radio channel share one radio bearer or are two independent radio bearers.
- the terminals in the broadcast or multicast group share.
- the relevant parameters of the first PDCP layer and the second PDCP layer include at least one of security context information, security keys, integrity protection configuration information, header compression algorithm and header compression context information.
- the second wireless channel and the first wireless channel belong to the same cell and/or different cells of the same network node, or in other words, for the first service, they are in the same cell and/or in the same cell. Or in the case of different cells of the same base station, if they correspond to two separate PDCP layers, the related parameters of the two PDCE layers are the same.
- the related parameters of the PDCP layer corresponding to the unicast wireless channels of the multiple first terminals are the same, and the related parameters include security context information, security keys, integrity protection configuration information, header compression algorithm and header compression context information.
- At least one of the first terminal is a terminal that receives the broadcast or multicast wireless channel data.
- the related parameters of the PDCP layer of the unicast wireless channel corresponding to each terminal in the broadcast or multicast group corresponding to the first service are the same.
- the PDCP layer of the unicast wireless channel corresponding to each terminal in the broadcast or multicast group corresponding to the first service related parameters are the same.
- the bandwidth part (Bandwidth partial, BWP) corresponding to the broadcast or multicast wireless channel includes a first BWP and a second BWP;
- the first BWP is a dedicated BWP
- the second BWP is an initial BWP; or, both the first BWP and the second BWP are initial BWPs.
- the configuration of the initial BWP may be: the initial downlink BWP (initial downlink BWP) broadcast in SIB1, and/or the initial downlink BWP (initial downlink BWP) in the serving cell configuration (serving cell configuration), and/or the initial BWP corresponding to control resource set (control resource set, coreset) 0.
- the initial BWP may be the initial downlink BWP broadcast in SIB1 and/or the initial downlink BWP in the serving cell configuration and/or the initial BWP corresponding to coreset 0.
- the first BWP may be used when the terminal is in a connected state
- the second BWP may be used when the terminal is in an idle state or an inactive state.
- the corresponding BWP resources of the first service may also be pre-configured on the initial BWP at the same time. resource. Therefore, when the terminal changes from the connected state to the idle state (idle) or the inactive state (inactive), the terminal can directly and seamlessly start using the wireless channel on the initial BWP, reducing the interruption time of the service. Or, when configuring the BWP resources of the wireless channel in the broadcast or multicast transmission mode, configure the wireless channel in the broadcast or multicast mode in the initial BWP, and indicate the resources that the terminal can use in the idle state. When it is in the idle/inactive state, you can continue to use the wireless channel on the initial BWP according to the instruction to reduce the interruption time of the service.
- the method also includes at least one of the following:
- Configuring the first PDU session through an RRC message configures the first wireless channel and/or the second wireless channel or the first wireless channel or the second wireless channel for at least one QoS flow of the first PDU session;
- Configure the first PDU session through the RRC message configure the first wireless channel and/or the second wireless channel or the first wireless channel for at least one QoS flow of the first PDU session, and delete the second wireless channel;
- Configuring the first PDU session through an RRC message configures a first wireless channel and/or a second wireless channel or a second wireless channel for at least one QoS flow of the first PDU session, and deletes the first wireless channel.
- the first wireless channel and/or the second wireless channel may be configured through an RRC message, and the first wireless channel and/or the second wireless channel may be deleted through an RRC message.
- the first wireless channel and/or the second wireless channel may be activated, and the first wireless channel and/or the second wireless channel may be deactivated.
- the first wireless channel and the second wireless channel can be used to transmit the data of the first service at the same time, that is, the data of the first service can be simultaneously transmitted through unicast and broadcast or Multicast transmission.
- the wireless channel can be activated or deactivated through RRC message, MAC CE and/or physical control signaling.
- the method before sending the second data to the terminal through the second wireless channel, the method further includes:
- the embodiments of the present disclosure may be applicable to the case where the second wireless channel and the first wireless channel belong to the same cell.
- the PDCP of the old link is Send a status report to the PDCP of the new link. It can avoid packet loss and also avoid sending duplicate downlink data packets.
- the PDCP state variable on the new wireless channel needs to be counted from zero.
- it is designed to be activated from the old wireless channel to the new wireless channel. That is, when the new link is activated, if there is no key change, the PDCP state variable on the new wireless channel needs to maintain the latest value of the PDCP state variable of the old wireless channel. That is, the latest state variable value needs to be exchanged between the two PDCP entities.
- sending the second data to the terminal through the second wireless channel includes:
- a first PDCP PDU including an IR packet is sent, and the first PDCP PDU is used to carry the second data.
- the activated PDCP needs to send the PDCP PDU of the data packet including the complete header compression information, so as to avoid the failure of header compression.
- the IR package is an initialization and reset state package (initiationandrefreshstate).
- the dual-connected two Different cells, or a broadcast or multicast service two or more wireless channels (one unicast and one multicast or broadcast) mapped out by a broadcast or multicast QoS flow) are in different cells, respectively.
- It is an independent Robust Header Compression (ROHC) and context, and achieves header compression synchronization by sending IR information.
- ROHC Robust Header Compression
- sending the second data to the terminal through the second wireless channel includes:
- the method further includes:
- the end packet is used to indicate that the data of the first PDU session or the data of at least one QoS flow of the first PDU session has been switched from the first wireless channel to the second wireless channel. bear.
- an indication can be added to the header of the PDCP PDU to inform the UE whether the packet is encrypted with the new key or the old key; or packets of different security contexts are grouped with different logical channel identifiers packet; or send an end packet to the new wireless channel on the old wireless channel, so that the UE can distinguish the data packets of the wireless channel using the new security context later.
- the method further includes:
- the synchronization function is used for:
- Time information related to signaling and/or interaction and packet transmission and/or:
- the time information may be absolute and/or relative time information; or information of system frame number (System frame number, SFN), subframe, time slot (slot), mini-slot and/or time symbol.
- the functions of the synchronization function body include:
- Time information related to signaling and/or interaction and packet transmission and/or:
- the time information may be absolute and/or relative time information; or information of SFN, subframe, slot, mini-slot and/or time symbol (such as start time information, and/or duration time information).
- the time information may be at least one of absolute time information, relative time information, SFN information, subframe information, slot information, mini-slot information, and time symbol information.
- a network node when performing simultaneous reception or switching between unicast, broadcast or multicast across network nodes, such as CUs, DUs, or base stations (gNBs), a network node, such as CUs or base stations (gNBs), introduces A synchronization function to send and/or exchange time information related to data packet transmission through signaling; and/or: add time information related to data packet transmission to data packets; perform synchronization of data packet transmission. It can solve the problem that the packets of two base stations are not synchronized.
- a synchronization protocol instance of the synchronization function is associated with a broadcast or multicast PDU session.
- the synchronization function is used to synchronize data packet transmission between the core network and/or the application layer and network nodes, and/or between network nodes;
- the synchronization function is an independent protocol layer, or the synchronization function is located in at least one of the protocol layers of SDAP, PDCP, RLC and MAC.
- the synchronization function can be used not only to synchronize data packet transmission between the core network and network nodes, but also to synchronize data packet transmission between the application layer and network nodes. Can be used to synchronize data packet transmission between network nodes.
- the time information is time information sent from an application layer or a core network, or is time information generated by a network node and used to synchronize transmission between base stations.
- the synchronization function when used to add time information related to the transmission of the data packet in the data packet, the time information and data are sent together in one data packet; and/or the time information Sent individually in a packet.
- the time information can be sent together with the data in a data packet, or can be sent as a separate data packet.
- the time information is used for synchronization of data transmission, so it can also be called synchronization time information.
- the time information is sent by the MCE to a distribution unit (Distribute Unit, DU); and/or:
- the time information is information converted by MCE into SFN, subframe, slot, mini-slot and/or time symbol for scheduling.
- the time information is sent by a centralized unit (Centralized Unit, CU) to a distribution unit (Distribute Unit, DU); and/or:
- a centralized unit Centralized Unit, CU
- a distribution unit Distribute Unit, DU
- the time information is information converted by the CU into SFN, subframe, slot, mini-slot and/or time symbol for scheduling.
- the CU needs to send the time information to the DU, and/or convert the time information into a scheduled system frame number (System Frame Number).
- System Frame Number System Frame Number
- frame number, SFN subframe
- slot mini-slot
- time symbol information such as start time information, and/or duration time information
- the synchronization function is used to parse out the time information related to the transmission of the data packet added to the data packet after receiving the user data frame, and/or, parse out the transmission and/or interaction and data in the signaling.
- Time information related to packet transmission use the time information to schedule user data or schedule in the MTCH scheduling period.
- a node such as a CU, DU, or a base station (gNB)
- gNB base station
- the synchronization function can then check whether the received frame header and packet counter values match.
- the network node may use the time information to schedule the user data or schedule the MTCH scheduling period.
- the network node includes a base station of a first cell and a base station of a second cell, where the first cell is a cell to which the first wireless channel belongs, and the second cell is a cell to which the second wireless channel belongs The cell; the method also includes at least one of the following:
- the base station of the first cell informs the base station of the second cell of the packet sequence number that has been sent by the base station of the second cell and/or the packet sequence number successfully received by the UE, then the base station of the second cell uses the unicast connection to send a unicast connection to the UE that the first cell and the second cell are not synchronized. Bag;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache;
- the base station of the second cell informs the base station of the first cell of the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the cache, and carries the time information corresponding to the packets sent;
- the base station of the first cell forwards the unsynchronized packets of the first cell and the second cell according to the received information
- the base station of the first cell forwards, according to the received information, the packet that is not synchronized between the first cell and the second cell, and that is not stored in the cache of the second cell;
- the UE informs the base station of the second cell of the sequence number of the data packet successfully received in the first cell, and then the base station of the second cell sends the unsynchronized packet of the first cell and the second cell to the UE by using the unicast connection;
- the UE maintains the connection with the first cell and the second cell at the same time, and does not interrupt the connection with the first cell until it has received the unsynchronized packet from the first cell and the second cell;
- the base station of the second cell informs the base station of the first cell that the sequence numbers of the next or more packets to be sent and/or the sequence numbers of the packets still stored in the buffer can optionally carry the time information for sending;
- the first cell informs the handover information in the handover information UE, then the UE maintains the connection with the first cell and the second cell at the same time, and interrupts the connection with the first cell until it has received the unsynchronized packet of the first cell and the second cell from the first cell;
- the UE After switching to the second cell, the UE continues to maintain the connection with the first cell until it finds that the packets received in the second cell and the packets received from the first cell are continuous or repeated, and then the connection with the first cell is interrupted.
- the UE When the UE performs handover, dual connection establishment/reconfiguration, or unicast-to-multicast handover between base stations/cells, if the multicast service of the first cell is sent to the data packet of sequence number k (for example, the UE then the first cell When receiving packet 4), after switching to the second cell, the multicast service has been sent to the data packet with sequence number n (for example, packet 10), k and n are integers, and n is greater than k, then the first cell and the second Cell-asynchronous packets include data packets of sequence number k+1, . . . , data packets of sequence number n-1 (eg, packet 5, packet 6, packet 7, packet 8, and packet 9).
- the embodiments of the present disclosure may utilize at least one of the above-mentioned methods to solve this problem.
- the method further includes:
- resources are allocated to the terminal according to the concurrent demand information.
- the concurrent demand information includes at least one of the following: demand information of a unicast service being sent, demand information of a broadcast or multicast service being sent, demand information of a unicast service to be sent in the future, and demand information of a unicast service to be sent in the future.
- Demand information for broadcast or multicast services includes at least one of the following: demand information of a unicast service being sent, demand information of a broadcast or multicast service being sent, demand information of a unicast service to be sent in the future, and demand information of a unicast service to be sent in the future.
- simultaneous unicast and multicast services are supported for coarse time/frequency granularity (plus prediction of future resource usage).
- Step 0 The base station indicates in the system message and/or dedicated signaling the broadcast/multicast service being sent by the base station and instructs the UE to report the UE's broadcast/multicast and unicast and/or multiple broadcast/multicast to the base station business concurrency requirements;
- Step 1 The UE sends a first message to the base station, including at least one of the following information:
- the amount of broadcast/multicast received by the UE the bandwidth requirement of the broadcast/multicast service, the number of PRBs required by the broadcast/multicast service, the received amount of the unicast service required by the UE, the bandwidth requirement of the unicast service, the number of PRBs required for broadcasting services;
- the broadcast/multicast information required by the UE including TMGI, Session id, the geographical scope of the broadcast/multicast service, IP multicast address, service start time, etc.; and the corresponding reception volume, the bandwidth requirement of the broadcast/multicast service, The number of PRBs required by broadcast/multicast services, the reception volume of unicast services required by the UE, the bandwidth requirements of unicast services, and the number of PRBs required by unicast services;
- the sending time information of the data of the multicast service includes: the repetition period, the offset parameter and the duration of the service data of the multicast service; the UE can obtain this time information from the application layer.
- the amount of broadcast/multicast reception required by the UE in the next time period, the bandwidth requirement of the broadcast/multicast service in the next time period, the number of PRBs required for the broadcast/multicast service in the next time period, the UE in the next time period The required reception volume of the unicast service, the bandwidth requirement of the unicast service in the next time period, and the number of PRBs required by the unicast service in the next time period;
- Step 2 Then the base station (and/or MCE) determines the broadcast/multicast service and unicast service that the UE is interested in according to the content of the second information sent by the UE. At the same time, resources are allocated to the UE, and the resource allocation modes of multicast and unicast are determined.
- the method before sending the second data to the terminal through the second wireless channel, the method further includes at least one of the following methods:
- condition or factor including at least one of the following:
- the number of participating UEs (or, in other words, the number of terminals receiving multicast); Quality of Service (QoS) information; Quality of Experience (QoE); Channel quality information; , the sending method information selected by the big data analysis node, core network, artificial intelligence analysis node and/or network management node.
- QoS Quality of Service
- QoE Quality of Experience
- Channel quality information the sending method information selected by the big data analysis node, core network, artificial intelligence analysis node and/or network management node.
- the conditions or factors for handover may also include the location of the terminal.
- the UE uses a unicast radio channel
- the base station transmits SC-MCCH and SC-PTM using beam 2 and beam 3. If one or more terminals cannot receive beam 2 and beam 3 , the unicast mode is used for those terminals that cannot receive beam 2 and beam 3.
- the number of data packets that the UE fails to receive is greater than or equal to a certain threshold or the number of data packets that the UE successfully receives is less than or equal to a certain threshold, and the multicast transmission is switched to the unicast transmission;
- unicast transmission switches to multicast transmission.
- the above-mentioned certain threshold may be a preset threshold, and the above-mentioned several thresholds may be the same or different.
- a request for switching from multicast to unicast is sent to the base station.
- the base station sends a unicast transmission to the group.
- a request to send a handover is broadcast.
- the channel quality information includes reference signal received power (Reference Signal Received Power, RSRP), reference signal received quality (Reference Signal Received Quality, RSRQ), and channel state information (Channel State Information, CSI) reporting results.
- RSRP Reference Signal Received Power
- RSRQ Reference Signal Received Quality
- CSI Channel State Information reporting results.
- the status of the UE receiving the data packet includes the information of successfully receiving the data packet and/or the information of failing to receive the data packet.
- the base station may decide whether to switch between the first wireless channel and the second wireless channel according to the above conditions or factors.
- At least one of the following information is notified to the core network by the radio access network side, the UE, the big data analysis node, the artificial intelligence analysis node and/or the network management node:
- the number of participating UEs The number of participating UEs, the channel quality information, the state of the UE receiving data packets, and the selected transmission mode information.
- the core network can decide whether to switch between the first wireless channel and the second wireless channel according to the above information.
- FIG. 8a is a schematic flowchart of a data transmission method according to Embodiment 2 of the present disclosure. The method is applied to a terminal and includes the following steps:
- Step 81 Receive the first configuration information sent by the network device
- Step 82 According to the first configuration information, establish and/or configure the first wireless channel and/or the second wireless channel for the first PDU session or establish and/or configure the first wireless channel for at least one QoS flow of the first PDU session and/or a second wireless channel;
- the first wireless channel is used for receiving the first data sent by the network node through the first wireless channel
- the second wireless channel is used for receiving second data sent by the network node through the second wireless channel
- the first wireless channel is a unicast wireless channel, one of broadcast or multicast wireless channels
- the second wireless channel is a unicast wireless channel, the other of broadcast or multicast wireless channels
- the first data represents the first data of the first PDU session or at least one QoS flow of the first PDU session
- the second data represents second data of the first PDU session or at least one QoS flow of the first PDU session.
- the second wireless channel and the first wireless channel belong to the same network node or different network nodes
- Both the first wireless channel and the second wireless channel are configured by the network node to configure the first wireless channel and/or the second wireless channel for the first PDU session or to configure at least one QoS flow of the first PDU session.
- the network nodes corresponding to the different cells may be different.
- the step of receiving the first data sent by the network node through the first wireless channel and the step of receiving the second data sent by the network node through the second wireless channel may be performed simultaneously or not simultaneously.
- the first data sent by the network node through the first wireless channel is received first, and then the second data sent by the network node through the second wireless channel is received. That is, the data of the first service can be switched from unicast to broadcast or multicast, and can also be switched from broadcast or multicast to unicast.
- the first data and the second data may be the same, that is, the first data and the second data may be the same at the same time, that is, the first data and the second data may be the same through a single wireless channel at the same time.
- the sending mode of multicast or broadcast service can be switched from broadcast or multicast to unicast, and can also be switched from unicast to broadcast or multicast.
- the data of the same service can also be transmitted by unicast and broadcast or multicast at the same time.
- the second data is the same as the first data, or:
- the second data is a subset of the first data, or:
- the subset of the second data and the first data have no intersection, or:
- the second data and the first data are partially the same.
Abstract
Description
Claims (93)
- 一种数据传输方法,应用于网络节点,包括:给第一PDU会话配置第一无线通道和/或第二无线通道,或者,给第一PDU会话的至少一个QoS流配置第一无线通道和/或第二无线通道;第一无线通道用于向终端发送第一数据;第二无线通道用于向终端发送第二数据;所述第一无线通道为单播无线通道,广播或组播无线通道中的一个,所述第二无线通道为单播无线通道,广播或组播无线通道中的另一个;所述第一数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第一数据;所述第二数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第二数据。
- 根据权利要求1所述的方法,其中,所述第二数据和所述第一数据相同,或者:所述第二数据是所述第一数据的子集,或者:所述第二数据和所述第一数据没有交集,或者:所述第二数据和所述第一数据有部分相同。
- 根据权利要求1所述的方法,其中,所述给第一PDU会话配置第一无线通道和/或第二无线通道,或者,给第一PDU会话的至少一个QoS流配置第一无线通道和/或第二无线通道,包括:配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置中的至少一种配置;配置所述第二无线通道对应的第二SDAP配置、第二PDCP配置、第二RLC配置、第二MAC配置和第二物理配置中的至少一种配置;其中,至少所述第一物理配置与所述第二物理配置不同;其中,第一无线通道和第二无线通道共用一个无线承载或者是两个独立的无线承载。
- 根据权利要求3所述的方法,其中,所述配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置中的至少一种配置;配置所述第二无线通道对应的第二SDAP配置、第二PDCP配置、第二RLC配置、第二MAC配置和第二物理配置中的至少一种配置,包括:配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置和配置所述第二无线通道对应的第二PDCP配置、第二RLC配置、第二MAC配置和第二物理配置;或者:配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置和配置所述第二无线通道对应的第二PDCP配置、第二RLC配置和第二物理配置;或者:配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置和配置所述第二无线通道对应的第二RLC配置、第二MAC配置和第二物理配置;或者:配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置和配置所述第二无线通道对应的第二RLC配置和第二物理配置;或者:配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置和配置所述第二无线通道对应的第二MAC配置和第二物理配置;或者:配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置和配置所述第二无线通道对应的第二物理配置。
- 根据权利要求3所述的方法,其中,在所述第二无线通道与所述第一无线通道属于同一小区和/或同一网络节点的不同小区的情况下,所述第一PDCP层和所述第二PDCP层的相关参数相同,所述相关参数包括安全上下文信息、安全密钥、完整性保护配置信息、头压缩算法和头压缩上下文信息中的至少一项。
- 根据权利要求3所述的方法,其中,多个第一终端的单播无线通道对应的PDCP层的相关参数相同,所述相关参数包括安全上下文信息、安全密钥、完整性保护配置信息、头压缩算法和头压缩上下文信息中的至少一项,所述第一终端是接收所述广播或组播无线通道数据的终端。
- 根据权利要求1所述的方法,其中,所述广播或组播无线通道对应的BWP包括第一BWP和/或第二BWP;所述第一BWP为专用BWP,所述第二BWP为初始BWP;或者,所述第一BWP和所述第二BWP均为初始BWP;其中,所述初始BWP的配置是:SIB1中广播的初始下行BWP,和/或服务小区配置中的初始下行BWP,和/或coreset 0对应的初始BWP。
- 根据权利要求1所述的方法,其中,还包括以下至少之一:通过RRC消息、MAC CE和/或物理控制信令,激活所述第一无线通道或所述第二无线通道;通过RRC消息、MAC CE和/或物理控制信令,激活所述第一无线通道和所述第二无线通道;通过RRC消息、MAC CE和/或物理控制信令,激活所述第一无线通道并去激活所述第二无线通道;通过RRC消息同时为所述第一PDU会话配置第一无线通道和第二无线通道,或者,给第一PDU会话的至少一个QoS流同时配置第一无线通道和第二无线通道;通过RRC消息为所述第一PDU会话配置第一无线通道或第二无线通道或者给第一PDU会话的至少一个QoS流配置第一无线通道或第二无线通道;通过RRC消息为所述第一PDU会话配置第一无线通道,并删除第二无线通道,或者给第一PDU会话的至少一个QoS流配置第一无线通道,并删除第二无线通道;通过RRC消息为所述第一PDU会话配置第二无线通道或者给第一PDU会话的至少一个QoS流配置第二无线通道,并删除第一无线通道。
- 根据权利要求1所述的方法,其中,通过第二无线通道向终端发送所述第二数据之前,还包括:获取所述第一无线通道的PDCP发送状态报告。
- 根据权利要求1所述的方法,其中,通过第二无线通道向终端发送所述第二数据包括:在开始通过所述第二无线通道发送所述第二数据的预设时间段内,发送包括IR包的第一PDCP PDU,所述第一PDCP PDU用于携带所述第二数据。
- 根据权利要求1所述的方法,其中,通过第二无线通道向终端发送所述第二数据包括:发送第二PDCP PDU,所述第二PDCP PDU用于携带所述第二数据;其中,所述第二PDCP PDU的包头内包括用于指示使用新密钥加密的信息,或者所述第二PDCP PDU是使用所述第二无线通道对应的逻辑信道标识来组包;或者,在所述第二无线通道与所述第一无线通道属于不同小区的情况下,通过第二无线通道向终端发送所述第二数据之前,还包括:向终端发送结束包,所述结束包用于指示所述第一PDU会话的数据或所述第一PDU会话的至少一个QoS流的数据已从第一无线通道切换至由所述第二无线通道承载。
- 根据权利要求1所述的方法,其中,还包括:在网络节点,配置同步功能体;其中,所述同步功能体用于:通过信令发送和/或交互和数据包发送相关的时间信息;和/或:在数据包中加入和数据包发送相关的时间信息;其中,所述时间信息可以是绝对和/或相对的时间信息;或者是SFN、子帧、slot、mini-slot和/或时间符号的信息。
- 根据权利要求12所述的方法,其中,所述同步功能体的一个同步协议实例和一个广播或组播PDU会话关联。
- 根据权利要求12所述的方法,其中,所述同步功能体用于在核心网和/或应用层与网络节点之间,和/或网络节点之间进行数据包发送的同步;所述同步功能体是独立的协议层,或者,所述同步功能体位于SDAP、PDCP、RLC和MAC的至少一个协议层中。
- 根据权利要求12所述的方法,其中,所述时间信息是从应用层或核心网发送的时间信息,或者是,由网络节点生成的用于同步基站间发送的时间信息。
- 根据权利要求12所述的方法,其中,在所述同步功能体用于在数据包中加入和数据包发送相关的时间信息的情况下,所述时间信息和数据在一个数据包中一起发送;和/或所述时间信息在一个数据包中单独发送。
- 根据权利要求12所述的方法,其中,所述时间信息是由CU发送给DU;和/或:所述时间信息是由CU转换成用于调度的SFN,子帧,slot,mini-slot和/或时间符号的信息。
- 根据权利要求12所述的方法,其中,所述同步功能体用于在接收到用户数据帧后,解析出数据包中加入和数据包发送相关的时间信息,和/或,解析出信令中发送和/或交互和数据包发送相关的时间信息;利用时间信息对用户数据进行调度或者在MTCH调度周期进行调度。
- 根据权利要求1所述的方法,其中,所述网络节点包括第一小区的基站和第二小区的基站,所述第一小区为所述第一无线通道所属的小区,所述第二小区为所述第二无线通道所属的小区;所述方法还包括以下至少之一:第一小区的基站告知第二小区的基站已经发送的包序号,和/或UE成功接收的包序号,则第二小区的基站利用单播连接向UE发送第一小区和第二小区不同步的包;第二小区的基站告知第一小区基站,下一个或多个要发送的包序号和/或缓存中还保存的包的序号;第二小区的基站告知第一小区基站,下一个或多个要发送的包序号和/或缓存中还保存的包的序号,并携带包对应发送的时间信息;第一小区的基站根据收到的信息,转发第一小区和第二小区不同步的包;第一小区的基站根据收到的信息,转发第一小区和第二小区不同步,且第二小区的缓存中没有保存的包;UE告知第二小区的基站在第一小区成功接收的数据包的序号,则第二小区的基站利用单播连接向UE发送第一小区和第二小区不同步的包;UE同时保持和第一小区和第二小区的连接,直至从第一小区接收完第一小区和第二小区不同步的包,才中断和第一小区的连接;第二小区的基站告知第一小区基站,下一个或多个要发送的包序号和/或缓存中还保存的包的序号,可选择性携带发送的时间信息;第一小区在切换信息中告知UE,则UE同时保持和第一小区和第二小区的连接,直至从第一小区接收完第一小区和第二小区不同步的包,才中断和第一小区的连接;UE切换到第二小区后,继续保持和第一小区的连接,直到发现在第二小区接收的包和从第一小区收到的包连续了或者重复了,才中断和第一小区的连接。
- 根据权利要求1所述的方法,其中,还包括:向终端发送第一指示信息和/或第二指示信息;其中,所述第一指示信息用于指示所述网络节点正在发送的广播或组播业务,所述第二指示信息用于指示所述终端上报并发需求信息,所述并发需求信息包括单播业务和广播或组播业务的第一并发需求信息和/或多个广播或组播业务的第二并发需求信息;接收所述终端根据所述第一指示信息和/或所述第二指示信息发送的所述并发需求信息;根据所述并发需求信息,为所述终端分配资源。
- 根据权利要求20所述的方法,其中,所述并发需求信息包括以下至少之一项:正在发送的单播业务的需求信息、正在发送的广播或组播业务的需求信息、未来发送的单播业务的需求信息和未来发送的广播或组播业务的需求信息。
- 根据权利要求2所述的方法,其中,通过第二无线通道向终端发送所述第二数据之前,还包括以下至少一种方法:确定是否存在在所述第一无线通道和所述第二无线通道之间切换的条件或因素,所述条件或因素包括以下至少一种:参与的UE的个数;业务质量信息;QoE;信道质量信息;UE接收数据包的状态;UE,大数据分析节点,核心网,人工智能分析节点和/或网管节点选择的发送方式信息;一个组播或广播的参与UE多数集中在第一波束和第二波束,如果一个或多个UE接收不到第一波束和第二波束的,则对这些接收不到第一波束和第二波束的UE用单播无线通道;UE没有成功接收的数据包的个数多于或者等于一定的门限或者UE成功接收的数据包的个数小于或者等于一定的门限,组播发送向单播发送切换;如果UE没有成功接收的数据包的个数小于或者等于一定的门限或者UE成功接收的数据包的个数多于或者等于一定的门限,单播发送向组播发送切换。
- 根据权利要求22所述的方法,其中,以下信息中的至少一种是由无线接入网侧,UE,大数据分析节点,人工智能分析节点和/或网管节点告知核心网:参与的UE的个数、信道质量信息、UE接收数据包的状态、选择的发送方式信息。
- 一种数据传输方法,应用于终端,包括:接收网络设备发送的第一配置信息;根据第一配置信息,给第一PDU会话建立和/或配置第一无线通道和/或第二无线通道;或者,给第一PDU会话的至少一个QoS流建立和/或配置第一无线通道和/或第二无线通道;第一无线通道用于接收网络节点通过第一无线通道发送的第一数据;第二无线通道用于接收网络节点通过第二无线通道发送的第二数据;所述第一无线通道为单播无线通道,广播或组播无线通道中的一个,所述第二无线通道为单播无线通道,广播或组播无线通道中的另一个;所述第一数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第一数据;所述第二数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第二数据。
- 根据权利要求24所述的方法,其中,所述第二数据和所述第一数据相同,或者:所述第二数据是所述第一数据的子集,或者:所述第二数据和所述第一数据的子集没有交集,或者:所述第二数据和所述第一数据有部分相同。
- 根据权利要求24所述的方法,其中,还包括:建立和/或配置所述第一无线通道对应第一SDAP实体、第一PDCP实体、第一RLC实体、第一MAC实体和第一物理层中的至少一种;建立和/或配置所述第二无线通道对应第二SDAP实体、第二PDCP实体、第二RLC实体、第二MAC实体和第二物理层中的至少一种;其中,至少所述第一物理层与所述第二物理层是独立的;其中,第一无线通道和第二无线通道共用一个无线承载或者是两个独立的无线承载。
- 根据权利要求26所述的方法,其中,所述建立和/或配置所述第一无线通道对应的第一SDAP实体、第一PDCP实体、第一RLC实体、第一MAC实体和第一物理层中的至少一种;所述建立和/或配置所述第二无线通道对应的第二SDAP实体、第二PDCP实体、第二RLC实体、第二MAC实体和第二物理层中的至少一种,包括:建立和/或配置所述第一无线通道对应的第一SDAP实体、第一PDCP实体、第一RLC实体、第一MAC实体和第一物理层和建立和/或配置所述第二无线通道对应的第二PDCP实体、第二RLC实体、第二MAC实体和第二物理层;或者:建立和/或配置所述第一无线通道对应的第一SDAP实体、第一PDCP实体、第一RLC实体、第一MAC实体和第一物理层和建立和/或配置所述第二无线通道对应的第二PDCP实体、第二RLC实体和第二物理层;或者:建立和/或配置所述第一无线通道对应的第一SDAP实体、第一PDCP实体、第一RLC实体、第一MAC实体和第一物理层和建立和/或配置所述第二无线通道对应的第二RLC实体、第二MAC实体和第二物理层;或者:建立和/或配置所述第一无线通道对应的第一SDAP实体、第一PDCP实体、第一RLC实体、第一MAC配置和第一物理层和建立和/或配置所述第二无线通道对应的第二RLC实体和第二物理层;或者:建立和/或配置所述第一无线通道对应的第一SDAP实体、第一PDCP实体、第一RLC实体、第一MAC实体和第一物理层和建立和/或配置所述第二无线通道对应的第二MAC实体和第二物理层;或者:建立和/或配置所述第一无线通道对应的第一SDAP实体、第一PDCP实体、第一RLC实体、第一MAC实体和第一物理层和建立和/或配置所述第二无线通道对应的第二物理层。
- 根据权利要求26所述的方法,其中,在所述第二无线通道与所述第一无线通道属于同一小区的情况下,所述第一PDCP层和所述第二PDCP层的相关参数相同,所述相关参数包括安全上下文信息、安全密钥、完整性保护配置信息、头压缩算法和头压缩上下文信息中的至少一项。
- 根据权利要求24所述的方法,其中,所述终端的单播无线通道对应的PDCP层的相关参数与第一终端相同,所述相关参数包括安全上下文信息、安全密钥、完整性保护配置信息、头压缩算法和头压缩上下文信息中的至少一项,所述第一终端和所述终端均是所述广播或组播无线通道对应的终端。
- 根据权利要求24所述的方法,其中,所述广播或组播无线通道对应的BWP包 括第一BWP和/或第二BWP;所述第一BWP为专用BWP,所述第二BWP为初始BWP;或者,所述第一BWP和所述第二BWP均为初始BWP;其中,所述初始BWP的配置是:SIB1中广播的初始下行BWP,和/或服务小区配置中的初始下行BWP,和/或coreset 0对应的初始BWP。
- 根据权利要求24所述的方法,其中,还包括以下至少之一:接收网络节点发送的用来激活所述第一无线通道或所述第二无线通道的RRC消息、MAC CE和/或物理控制信令,并激活所述第一无线通道或所述第二无线通道;接收网络节点发送的用来激活所述第一无线通道和所述第二无线通道RRC消息、MAC CE和/或物理控制信令,并激活所述第一无线通道和所述第二无线通道;接收网络节点发送的用来激活所述第一无线通道并去激活所述第二无线通道通过RRC消息、MAC CE和/或物理控制信令,并激活所述第一无线通道并去激活所述第二无线通道;接收网络节点发送的用来同时建立和/或配置所述第一PDU会话的第一无线通道和第二无线通道通的RRC消息,并同时建立和/或配置所述第一PDU会话的第一无线通道和第二无线通道;接收网络节点发送的用来建立和/或配置所述第一PDU会话的第一无线通道或第二无线通道的RRC消息,并建立和/或配置所述第一PDU会话的第一无线通道或第二无线通道;接收网络节点发送的用来通过RRC消息建立和/或配置所述第一PDU会话的第一无线通道,并删除第二无线通道的RRC消息,并建立和/或配置所述第一PDU会话的第一无线通道,并删除第二无线通道;接收网络节点发送的用来通过RRC消息建立和/或配置所述第一PDU会话的第二无线通道,并删除第一无线通道的RRC消息,并建立和/或配置所述第一PDU会话的第二无线通道,并删除第一无线通道。
- 根据权利要求24所述的方法,其中,所述接收网络节点通过第二无线通道发送的第二数据之前,还包括:发送所述第一无线通道的PDCP的状态报告。
- 根据权利要求24所述的方法,其中,所述接收网络节点通过第二无线通道发送的第二数据包括:在开始通过所述第二无线通道接收所述第二数据的预设时间段内,接收包括IR包的第一PDCP PDU,所述第一PDCP PDU用于携带所述第二数据。
- 根据权利要求24所述的方法,其中,在所述第二无线通道与所述第一无线通道属于不同小区的情况下,所述接收网络节点通过第二无线通道向终端发送所述第二数据包括:接收第二PDCP PDU,所述第二PDCP PDU用于携带所述第二数据;其中,所述第二PDCP PDU的包头内包括用于指示使用新密钥加密的信息,或者所述第二PDCP PDU是使用所述第二无线通道对应的逻辑信道标识来组包;或者,在所述第二无线通道与所述第一无线通道属于不同小区的情况下,所述接收网络设备通过第二无线通道向终端发送所述第二数据之前,还包括:接收网络设备发送的结束包,所述结束包用于指示所述第一PDU会话的数据或所述第一PDU会话的至少一个QoS流的数据已从第一无线通道切换至由所述第二无线通道承载。
- 一种数据传输方法,应用于网络节点,包括:通过第一无线通道向终端发送第一数据;其中,所述第一无线通道为给第一PDU会话配置的;或者:所述第一无线通道为给第一PDU会话的至少一个QoS流配置的;所述第一无线通道为单播无线通道,广播或组播无线通道中的一个;所述第一数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第一数据。
- 根据权利要求35所述的方法,其中,所述通过第一无线通道向终端发送第一数据,包括:配置所述第一无线通道对应的第一SDAP配置、第一PDCP配置、第一RLC配置、第一MAC配置和第一物理配置中的至少一种配置。
- 根据权利要求35所述的方法,其中,所述广播或组播无线通道对应的BWP包括第一BWP和/或第二BWP;所述第一BWP为专用BWP,所述第二BWP为初始BWP;或者,所述第一BWP和所述第二BWP均为初始BWP;其中,所述初始BWP的配置是:SIB1中广播的初始下行BWP,和/或服务小区配置中的初始下行BWP,和/或coreset 0对应的初始BWP。
- 根据权利要求35所述的方法,其中,还包括以下至少之一:通过RRC消息、MAC CE和/或物理控制信令,激活所述第一无线通道;通过RRC消息、MAC CE和/或物理控制信令,去激活所述第一无线通道;通过RRC消息配置所述第一无线通道;通过RRC消息删除所述第一无线通道。
- 根据权利要求35所述的方法,其中,所述通过第一无线通道向终端发送所述第一数据之前,还包括:获取第二无线通道的相关信息;所述第二无线通道和第一无线通道对应相同的PDU会话配置或者相同的PDU会话的至少一个QoS流,且其他网络无线节点通过第二无线通道发送和第一无线通道对应的相同的PDU会话的数据或者相同的PDU会话的至少一个QoS流的数据。
- 根据权利要求39所述的方法,其中,所述获取第二无线通道的相关信息,包括:获取第二无线通道的数据包发送状态信息。
- 根据权利要求35所述的方法,其中,所述通过第一无线通道向终端发送所述第一数据包括:发送第一PDCP PDU,所述第一PDCP PDU用于携带所述第一数据;其中,所述第一PDCP PDU的包头内包括用于指示使用新密钥加密的信息,或者所述第一PDCP PDU是使用所述第一无线通道对应的逻辑信道标识来组包;或者,所述通过第一无线通道向终端发送所述第一数据之前,还包括:向终端发送结束包,所述结束包用于指示所述第一PDU会话的数据或所述第一PDU会话的至少一个QoS流的数据已从第一无线通道切换至由所述第二无线通道承载。
- 根据权利要求35所述的方法,其中,还包括:在网络节点,配置同步功能体;其中,所述同步功能体用于:通过信令发送和/或交互和数据包发送相关的时间信息;和/或:在数据包中加入和数据包发送相关的时间信息;其中,所述时间信息可以是绝对和/或相对的时间信息;或者是SFN、子帧、slot、 mini-slot和/或时间符号的信息。
- 根据权利要求42所述的方法,其中,所述同步功能体的一个同步协议实例和一个广播或组播PDU会话关联。
- 根据权利要求42所述的方法,其中,所述同步功能体用于在核心网和/或应用层与网络节点之间,和/或网络节点之间进行数据包发送的同步;所述同步功能体是独立的协议层,或者,所述同步功能体位于SDAP、PDCP、RLC和MAC的至少一个协议层中。
- 根据权利要求42所述的方法,其中,所述时间信息是从应用层或核心网发送的时间信息,或者是,由网络节点生成的用于同步基站间发送的时间信息。
- 根据权利要求42所述的方法,其中,在所述同步功能体用于在数据包中加入和数据包发送相关的时间信息的情况下,所述时间信息和数据在一个数据包中一起发送;和/或所述时间信息在一个数据包中单独发送。
- 根据权利要求42所述的方法,其中,所述时间信息是由CU发送给DU;和/或:所述时间信息是由CU转换成用于调度的SFN,子帧,slot,mini-slot和/或时间符号的信息。
- 根据权利要求42所述的方法,其中,所述同步功能体用于在接收到用户数据帧后,解析出数据包中加入和数据包发送相关的时间信息,和/或,解析出信令中发送和/或交互和数据包发送相关的时间信息;利用时间信息对用户数据进行调度或者在MTCH调度周期进行调度。
- 根据权利要求35所述的方法,其中,所述网络节点包括第一小区的基站和第二小区的基站,所述第一小区为所述第一无线通道所属的小区,所述第二小区为所述第二无线通道所属的小区;所述方法还包括以下至少之一:第一小区的基站告知第二小区的基站已经发送的包序号,和/或UE成功接收的包序号,则第二小区的基站利用单播连接向UE发送第一小区和第二小区不同步的包;第二小区的基站告知第一小区基站,下一个或多个要发送的包序号和/或缓存中还保存的包的序号;第二小区的基站告知第一小区基站,下一个或多个要发送的包序号和/或缓存中还保存的包的序号,并携带包对应发送的时间信息;第一小区的基站根据收到的信息,转发第一小区和第二小区不同步的包;第一小区的基站根据收到的信息,转发第一小区和第二小区不同步,且第二小区的缓存中没有保存的包;UE告知第二小区的基站在第一小区成功接收的数据包的序号,则第二小区的基站利用单播连接向UE发送第一小区和第二小区不同步的包;UE同时保持和第一小区和第二小区的连接,直至从第一小区接收完第一小区和第二小区不同步的包,才中断和第一小区的连接;第二小区的基站告知第一小区基站,下一个或多个要发送的包序号和/或缓存中还保存的包的序号,可选择性携带发送的时间信息;第一小区在切换信息中告知UE,则UE同时保持和第一小区和第二小区的连接,直至从第一小区接收完第一小区和第二小区不同步的包,才中断和第一小区的连接;UE切换到第二小区后,继续保持和第一小区的连接,直到发现在第二小区接收的包和从第一小区收到的包连续了或者重复了,才中断和第一小区的连接。
- 一种数据传输方法,应用于网络节点,包括:给第二业务建立两个或两个以上PDU会话;第一PDU会话用于向终端发送所述第二业务的第三数据;第二PDU会话用于向终端发送所述第二业务的第四数据;所述第二业务是广播或组播业务;所述第一PDU会话为单播PDU会话,广播或组播PDU会话中的一个,所述第二PDU会话为单播PDU会话,广播或组播PDU会话中的另一个;所述单播PDU会话为接收所述第二业务的全部或部分终端分别建立。
- 根据权利要求50所述的方法,其中,所述第四数据和所述第三数据相同,或者:所述第四数据是所述第三数据的子集,或者:所述第四数据和所述第三数据的子集没有交集,或者:所述第四数据和所述第三数据有部分相同。
- 根据权利要求50所述的方法,其中,所述网络节点包括核心网,通过第一PDU会话向终端发送所述第二业务的第三数据,通过第二PDU会话向终端发送所述第二业务的第四数据,包括:由核心网来决定一个广播或组播群组里利用为广播或组播业务建立的组播PDU会话来接收数据的终端,利用为广播或组播业务建立的单播PDU会话来接收数据的终端;和/或:由核心网来决定一个广播或组播业务里利用广播或组播业务的广播或组播PDU会话来接收的数据,利用单播PDU会话来接收的数据;和/或:由核心网来决定一个广播或组播群组里的部分或者全部的UE既可以利用为广播或组播业务建立的广播或组播PDU会话来接收数据,也可以同时利用为广播或组播业务建立的单播PDU会话来接收数据。
- 根据权利要求50所述的方法,其中,所述网络节点包括核心网,通过第一PDU会话向终端发送所述第二业务的第三数据,通过第二PDU会话向终端发送所述第二业务的第四数据,包括:核心网告知终端所述第一PDU会话与所述第二PDU会话的关系:核心网在给终端配置同一个广播或组播业务的广播或组播PDU会话和单播PDU会话来接收数据时,核心网分别告知终端和基站所述第一PDU会话与所述第二PDU会话之间的关系;或者:核心网告知基站所述第一PDU会话与所述第二PDU会话之间的关系,然后基站告知终端所述第一PDU会话与所述第二PDU会话之间的关系;或者:核心网告知基站所述第一PDU会话与所述第二PDU会话之间的关系或者核心网告知终端所述第一PDU会话与所述第二PDU会话之间的关系。
- 根据权利要求50所述的方法,其中,所述网络节点包括核心网,通过第一PDU会话向终端发送所述第二业务的第三数据;通过第二PDU会话向终端发送所述第二业务的第四数据,包括:核心网告知终端所述第一PDU会话与所述第二PDU会话的接收方式:由核心网来决定一个广播或组播群组里的部分或者全部的终端既可以利用为广播或组播业务建立的广播或组播PDU会话来接收数据,也可以同时利用为广播或组播业务建立的单播PDU会话来接收数据;其中,终端从为广播或组播业务建立的广播或组播PDU会话接收到的数据和从为广播或组播业务建立的单播PDU会话接收到的数据是同时的或者是分时的。
- 根据权利要求50所述的方法,其中,所述网络节点包括核心网,通过第一PDU会话向终端发送所述第二业务的第三数据,通过第二PDU会话向终端发送所述第二业务的第四数据,包括:核心网根据业务的质量需求,和/或业务的到达特性,和/或空口信道情况来为终端选择接收广播或组播业务的PDU会话种类和/或具体时间;其中,核心网可以从UE侧,基站侧和/或网管侧获取具体信息;其中具体信息,包括以下至少一种:空口的信道质量;终端的HARQ反馈;终端的ARQ反馈;终端的PDCP丢弃定时器的超时情况;终端接收数据包的情况;其中,具体时间,是个bitmap的时间格式的形式或者是绝对/相对时间信息。
- 根据权利要求55所述的方法,其中,所述网络节点包括核心网,通过第一PDU会话向终端发送所述第二业务的第三数据,通过第二PDU会话向终端发送所述第二业务的第四数据,包括:核心网告知基站为UE选择接收广播或组播业务的PDU会话种类,然后基站告知UE网络为UE选择接收广播或组播业务的PDU会话种类;或者:核心网告知基站为UE选择接收广播或组播业务的PDU会话种类和具体时间,然后基站告知UE网络为UE选择接收广播或组播业务的PDU会话种类和具体时间;或者:核心网告知基站为UE选择接收广播或组播业务的PDU会话种类或者核心告知终端为UE选择接收广播或组播业务的PDU会话种类;或者:核心网告知基站为UE选择接收广播或组播业务的PDU会话种类和具体时间或者核心网告知终端为UE选择接收广播或组播业务的PDU会话种类和具体时间。
- 根据权利要求50所述的方法,其中,通过第一PDU会话向终端发送所述第二业务的第三数据,通过第二PDU会话向终端发送所述第二业务的第四数据,包括:所述网络节点给一个UE为同一广播或组播业务建立广播或组播PDU会话和单播PDU会话来接收数据,并通过信令或者特殊的数据包来激活需要使用的为同一广播或组播业务建立的广播或组播PDU会话和/或单播PDU会话;和/或:所述网络节点通过信令或者特殊的数据包来去激活为同一广播或组播业务建立的广播或组播PDU会话和/或单播PDU会话;其中,网络节点可以是核心网和/或无线接入网侧的节点。
- 根据权利要求50所述的方法,其中,通过第一PDU会话向终端发送所述第二业务的第三数据,通过第二PDU会话向终端发送所述第二业务的第四数据,包括:为广播或组播业务建立的广播或组播PDU会话,无线接入网侧的网络节点,利用点对点和/或者点对多点传递方法发送给UE;或者:接收终端上报的PDU会话种类,所述PDU会话种类是UE自己根据业务的质量需求,和/或业务的到达特性和/或空口信道情况来决定UE使用的接收组播业务的PDU会话种类。
- 一种数据传输方法,应用于终端,包括:接收网络侧设备发送的第二配置信息;根据第二配置信息,给第二业务建立两个或两个以上的PDU会话;第一PDU会话用于向终端发送所述第二业务的第三数据;第二PDU会话用于向终端发送所述第二业务的第四数据;所述第二业务是广播或组播业务;所述第一PDU会话为单播PDU会话,广播或组播PDU会话中的一个,所述第二PDU会话为单播PDU会话,广播或组播PDU会话中的另一个;所述单播PDU会话为接收所述第二业务的全部或部分终端分别建立。
- 根据权利要求59所述的方法,其中,所述第四数据和所述第三数据相同,或者:所述第四数据是所述第三数据的子集,或者:所述第四数据和所述第三数据的子集没有交集,或者:所述第四数据和所述第三数据有部分相同。
- 一种数据传输方法,应用于网络节点,包括:向终端发送PDSCH,所述PDSCH包括第一传输块和第二传输块,其中所述第一传输块用于传输单播业务的数据,所述第二传输块用于传输广播或组播业务的数据。
- 根据权利要求61所述的方法,其中,所述向终端发送PDSCH之前,还包括:向所述终端发送第一信息,所述第一信息用于确定第一HARQ反馈资源和第二HARQ反馈资源;和/或,向所述终端发送第二信息,所述第二信息用于确定第一时隙间隔和第二时隙间隔;其中,所述第一时隙间隔为所述第一HARQ反馈资源与所述PDSCH之间的时域间隔,所述第二时隙间隔为所述第二HARQ反馈资源与所述PDSCH之间的时域间隔;所述第一HARQ反馈资源用于传输针对所述第一传输块的HARQ反馈信息,所述第二HARQ反馈资源用于传输针对所述第二传输块的HARQ反馈信息。
- 根据权利要求62所述的方法,其中,所述第一信息包括第一PUCCH集合的信息和第二PUCCH集合的信息;或者,所述第一信息包括所述第一PUCCH集合的信息以及所述第一PUCCH集合与所述第二PUCCH集合之间的偏移信息;其中,所述第一HARQ反馈资源是所述第一PUCCH集合中的资源,所述第二HARQ反馈资源是所述第二PUCCH集合中的资源。
- 根据权利要求63所述的方法,其中,所述第一PUCCH集合的信息和/或所述第二PUCCH集合的信息是预先规定的PUCCH集合的标识信息。
- 一种数据传输方法,应用于终端,包括:接收网络节点发送的PDSCH,所述PDSCH包括第一传输块和第二传输块,其中所述第一传输块用于传输单播业务的数据,所述第二传输块用于传输广播或组播业务的数据。
- 根据权利要求65所述的方法,其中,所述接收网络节点发送的PDSCH之前,还包括:接收网络节点发送的第一信息,所述第一信息用于确定第一HARQ反馈资源和第二HARQ反馈资源;和/或,接收网络节点发送的第二信息,所述第二信息用于确定第一时隙间隔和第二时隙间隔;其中,所述第一时隙间隔为所述第一HARQ反馈资源与所述PDSCH之间的时域间隔,所述第二时隙间隔为所述第二HARQ反馈资源与所述PDSCH之间的时域间隔;所述第一HARQ反馈资源用于传输针对所述第一传输块的HARQ反馈信息,所述第二HARQ反馈资源用于传输针对所述第二传输块的HARQ反馈信息。
- 根据权利要求66所述的方法,其中,所述第一信息包括第一PUCCH集合的信息和第二PUCCH集合的信息;或者,所述第一信息包括所述第一PUCCH集合的信息以及所述第一PUCCH集合与所述第二PUCCH集合之间的偏移信息;其中,所述第一HARQ反馈资源是所述第一PUCCH集合中的资源,所述第二HARQ反馈资源是所述第二PUCCH集合中的资源。
- 根据权利要求67所述的方法,其中,所述第一PUCCH集合的信息和/或所述第二PUCCH集合的信息是预先规定的PUCCH集合的标识信息。
- 一种数据传输方法,应用于网络节点,包括:通过第一BWP向终端发送单播业务的数据,通过第二BWP向终端发送广播或组播业务的数据。
- 根据权利要求69所述的方法,其中,所述第一BWP为一个或多个专用激活BWP;所述第二BWP为初始BWP,或者所述第二BWP为与初始BWP具有关联关系的BWP;所述初始BWP的配置是:SIB1中广播的初始下行BWP,和/或服务小区配置中的初始下行BWP,和/或coreset 0对应的初始BWP。
- 根据权利要求70所述的方法,其中,所述通过第一BWP向终端发送单播业务的数据,通过第二BWP向终端发送广播或组播业务的数据之前,还包括:在所述第二BWP为与初始BWP具有关联关系的BWP的情况下,发送包括第三信息的系统消息;其中,所述第三信息用于指示所述第二BWP与所述初始BWP之间的关联关系。
- 一种数据传输方法,应用于终端,包括:接收网络节点通过第一BWP发送的单播业务的数据,通过第二BWP发送的广播或组播业务的数据。
- 根据权利要求72所述的方法,其中,所述第一BWP为一个或多个专用激活BWP;所述第二BWP为初始BWP,或者所述第二BWP为与初始BWP具有关联关系的BWP;所述初始BWP的配置是:SIB1中广播的初始下行BWP,和/或服务小区配置中的初始下行BWP,和/或coreset 0对应的初始BWP。
- 根据权利要求73所述的方法,其中,所述接收网络节点通过第一BWP发送的单播业务的数据,通过第二BWP发送的广播或组播业务的数据之前,还包括:接收包括第三信息的系统消息;其中,所述第三信息用于指示所述第二BWP与所述初始BWP之间的关联关系。
- 一种网络节点,包括:无线通道配置模块,配置为给第一PDU会话配置第一无线通道和/或第二无线通道或者给第一PDU会话的至少一个QoS流配置第一无线通道和/或第二无线通道;第一无线通道用于向终端发送第一数据;第二无线通道用于向终端发送第二数据;所述第一无线通道为单播无线通道,广播或组播无线通道中的一个,所述第二无线通道为单播无线通道,广播或组播无线通道中的另一个。
- 一种终端,包括:配置信息接收模块,配置为接收网络设备发送的第一配置信息;建立和/或配置模块,配置为根据第一配置信息,给第一PDU会话建立和/或配置第一无线通道和/或第二无线通道;或者,给第一PDU会话的至少一个QoS流建立和/或配置第一无线通道和/或第二无线通道;第一无线通道用于接收网络节点通过第一无线通道发送的第一数据;第二无线通道用于接收网络节点通过第二无线通道发送的第二数据;所述第一无线通道为单播无线通道,广播或组播无线通道中的一个,所述第二无线通道为单播无线通道,广播或组播无线通道中的另一个;所述第一数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第一数据;所述第二数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第二数据。
- 一种网络节点,包括:会话建立模块,配置为给第二业务建立两个或多个PDU会话;第一PDU会话用于向终端发送所述第二业务的第三数据;第二PDU会话用于向终端发送所述第二业务的第四数据;所述第二业务是广播或组播业务;所述第一PDU会话为单播PDU会话,广播或组播PDU会话中的一个,所述第二PDU会话为单播PDU会话,广播或组播PDU会话中的另一个;所述单播PDU会话为接收所述第二业务的全部或部分终端分别建立。
- 一种终端,包括:第二配置信息接收模块,配置为接收网络侧设备发送的第二配置信息;会话建立模块,配置为根据第二配置信息,给第二业务建立两个或两个以上的PDU会话;第一PDU会话用于向终端发送所述第二业务的第三数据;第二PDU会话用于向终端发送所述第二业务的第四数据;第一PDU会话用于向终端发送所述第二业务的第三数据;第二PDU会话用于向终端发送所述第二业务的第四数据;所述第二业务是广播或组播业务;所述第一PDU会话为单播PDU会话,广播或组播PDU会话中的一个,所述第二PDU会话为单播PDU会话,广播或组播PDU会话中的另一个;所述单播PDU会话为接收所述第二业务的全部或部分终端分别建立。
- 一种网络节点,包括:同时发送模块,配置为向终端发送PDSCH,所述PDSCH包括第一传输块和第二传输块,其中所述第一传输块用于传输单播业务的数据,所述第二传输块用于传输广播或组播业务的数据。
- 一种终端,包括:同时接收模块,配置为接收网络节点发送的PDSCH,所述PDSCH包括第一传输块和第二传输块,其中所述第一传输块用于传输单播业务的数据,所述第二传输块用于传输广播或组播业务的数据。
- 一种网络节点,包括:频分发送模块,配置为通过第一BWP向终端发送单播业务的数据,通过第二BWP向终端发送广播或组播业务的数据。
- 一种终端,包括:频分接收模块,配置为接收网络节点通过第一BWP发送的单播业务的数据,通过第二BWP发送的广播或组播业务的数据。
- 一种网络节点,包括:收发器和处理器;所述收发器,配置为给第一PDU会话配置第一无线通道和/或第二无线通道;或者,给第一PDU会话的至少一个QoS流配置第一无线通道和/或第二无线通道;第一无线通道用于向终端发送所述第一数据;第二无线通道用于向终端发送所述第二数据;所述第一无线通道为单播无线通道,广播或组播无线通道中的一个,所述第二无线通道为单播无线通道,广播或组播无线通道中的另一个。
- 一种终端,包括:收发器和处理器;所述收发器,配置为接收网络设备发送的第一配置信息;所述收发器,配置为根据第一配置信息,给第一PDU会话建立和/或配置两个或两 个以上无线通道,或者给第一PDU会话的至少一个QoS流建立和/或配置两个或两个以上无线通道;第一无线通道用于接收网络节点通过第一无线通道发送的第一数据;第二无线通道用于接收网络节点通过第二无线通道发送的第二数据;所述第一无线通道为单播无线通道,广播或组播无线通道中的一个,所述第二无线通道为单播无线通道,广播或组播无线通道中的另一个;所述第一数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第一数据;所述第二数据表示第一PDU会话或第一PDU会话的至少一个QoS流的第二数据。
- 一种网络节点,包括:收发器和处理器;所述收发器,配置为给第二业务建立两个或多个PDU会话;第一PDU会话用于向终端发送所述第二业务的第三数据;第二PDU会话用于向终端发送所述第二业务的第四数据;所述第二业务是广播或组播业务;所述第一PDU会话为单播PDU会话,广播或组播PDU会话中的一个,所述第二PDU会话为单播PDU会话,广播或组播PDU会话中的另一个;所述单播PDU会话为接收所述第二业务的全部或部分终端分别建立。
- 一种终端,包括:收发器和处理器;所述收发器,配置为接收网络侧设备发送的第二配置信息;所述收发器,配置为根据第二配置信息,给第二业务建立两个或两个以上的PDU会话;第一PDU会话用于向终端发送所述第二业务的第三数据;第二PDU会话用于向终端发送所述第二业务的第四数据;所述第二业务是广播或组播业务;所述第一PDU会话为单播PDU会话,广播或组播PDU会话中的一个,所述第二PDU会话为单播PDU会话,广播或组播PDU会话中的另一个;所述单播PDU会话为接收所述第二业务的全部或部分终端分别建立。
- 一种网络节点,包括:收发器和处理器;所述收发器,配置为向终端发送PDSCH,所述PDSCH包括第一传输块和第二传输块,其中所述第一传输块用于传输单播业务的数据,所述第二传输块用于传输广播或组播业务的数据。
- 一种终端,包括:收发器和处理器;所述收发器,配置为接收网络节点发送的PDSCH,所述PDSCH包括第一传输块和第二传输块,其中所述第一传输块用于传输单播业务的数据,所述第二传输块用于传输广播或组播业务的数据。
- 一种网络节点,包括:收发器和处理器;所述收发器,配置为通过第一BWP向终端发送单播业务的数据,通过第二BWP向终端发送广播或组播业务的数据。
- 一种终端,包括:收发器和处理器;所述收发器,配置为接收网络节点通过第一BWP发送的单播业务的数据,通过第二BWP发送的广播或组播业务的数据。
- 一种网络节点,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序;所述处理器执行所述程序时实现如权利要求1至23中任一项所述的数据传输方法中的步骤或者实现如权利要求35至38中任一项所述的数据传输方法中的步骤或者实现如权利要求41至44中任一项所述的数据传输方法中的步骤或者实现如权利 要求49至51中任一项所述的数据传输方法中的步骤。
- 一种终端,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序;所述处理器执行所述程序时实现如权利要求24至34中任一项所述的数据传输方法中的步骤或者实现如权利要求39至40中任一项所述的数据传输方法中的步骤或者实现如权利要求45至48中任一项所述的数据传输方法中的步骤或者实现如权利要求52至54中任一项所述的数据传输方法中的步骤。
- 一种可读存储介质,其上存储有程序,该程序被处理器执行时实现如权利要求1至54中任一项所述的数据传输方法中的步骤。
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