Apparatus and methods are provided for group scheduling configuration and uplink HARQ configuration for the NR multicast services. In one novel aspect, the UE receives broadcasts the SIB message related to multicast transmission, receives multicast control information via RRC message, and configures the uplink HARQ feedback. In one embodiment, the SIB message includes control Resource Set and/or search space for MB-RNTI scramble. The multicast control information includes control Resource Set and/or search space within the MTCHinfolist G-RNTI scramble. The multicast control information includes one or more elements including MTCH index, uplink HARQ feedback request to inform the concerned UE(s) the HARQ feedback is disabled or enabled, the timing information between PDSCH and the uplink PUCCH feedback resource, the option of HARQ based feedback, one or a set of PUCCH resource or PUCCH resource instance, and an MTCH retransmission timer.

Apparatus and methods are provided for group scheduling configuration and uplink HARQ configuration for the NR multicast services. In one novel aspect, the UE receives broadcasts the SIB message related to multicast transmission, receives multicast control information via RRC message, and configures the uplink HARQ feedback. In one embodiment, the SIB message includes control Resource Set and/or search space for MB-RNTI scramble. The multicast control information includes control Resource Set and/or search space within the MTCHinfolist G-RNTI scramble. The multicast control information includes one or more elements including MTCH index, uplink HARQ feedback request to inform the concerned UE(s) the HARQ feedback is disabled or enabled, the timing information between PDSCH and the uplink PUCCH feedback resource, the option of HARQ based feedback, one or a set of PUCCH resource or PUCCH resource instance, and an MTCH retransmission timer.

This application provides for a data transmission method, an apparatus, and a device. The method may be applied to a relay communication system. The method includes a first network device that receives a first data packet. The first data packet is a data packet of a first multimedia broadcast multicast service (MBMS), and the first data packet carries first information. When second information of the first network device matches the first information, the first network device sends the first data packet to a terminal device that accesses the first network device. The second information is preconfigured for the first network device. In this way, the MBMS is transmitted in the relay communication system.

This application provides for a data transmission method, an apparatus, and a device. The method may be applied to a relay communication system. The method includes a first network device that receives a first data packet. The first data packet is a data packet of a first multimedia broadcast multicast service (MBMS), and the first data packet carries first information. When second information of the first network device matches the first information, the first network device sends the first data packet to a terminal device that accesses the first network device. The second information is preconfigured for the first network device. In this way, the MBMS is transmitted in the relay communication system.

A wireless device receives parameters comprising a radio network temporary identifier (RNTI) associated with a multicast and broadcast service (MBS) session; a first scrambling identity associated with the MBS session; and a second scrambling identity associated with unicast transmissions. The wireless device receives, based on the RNTI, a group common downlink control information (DCI) scheduling a transport block (TB) of the MBS session. Based on the group common DCI being received based on the RNTI, the wireless device determines a scrambling identity for the TB being equal to the first scrambling identity, and receives the TB being scrambled with a scrambling sequence initialized by the determined scrambling identity and the RNTI.

A wireless device receives parameters comprising a radio network temporary identifier (RNTI) associated with a multicast and broadcast service (MBS) session; a first scrambling identity associated with the MBS session; and a second scrambling identity associated with unicast transmissions. The wireless device receives, based on the RNTI, a group common downlink control information (DCI) scheduling a transport block (TB) of the MBS session. Based on the group common DCI being received based on the RNTI, the wireless device determines a scrambling identity for the TB being equal to the first scrambling identity, and receives the TB being scrambled with a scrambling sequence initialized by the determined scrambling identity and the RNTI.

Systems and methods for fronthaul optimization using software defined networking are provided. In one example, a method includes receiving time period information and destination information for a time period from one or more base station entities (BSEs), each BSE configured to implement some functions for layer(s) of a wireless interface used to communicate with UEs. The method further includes determining a configuration of Ethernet switch(es) based on the destination information for the time period and topology information for the Ethernet switch(es). The Ethernet switch(es) are communicatively coupled to the BSE(s) and configured to: receive downlink fronthaul data from the BSE(s), be communicatively coupled to one or more RUs, and forward downlink fronthaul data from the one or more base station entities to the one or more RUs. The method further includes transmitting update(s) for forwarding rules to the Ethernet switch(es) based on the determined configuration for the Ethernet switch(es).

Systems and methods for fronthaul optimization using software defined networking are provided. In one example, a method includes receiving time period information and destination information for a time period from one or more base station entities (BSEs), each BSE configured to implement some functions for layer(s) of a wireless interface used to communicate with UEs. The method further includes determining a configuration of Ethernet switch(es) based on the destination information for the time period and topology information for the Ethernet switch(es). The Ethernet switch(es) are communicatively coupled to the BSE(s) and configured to: receive downlink fronthaul data from the BSE(s), be communicatively coupled to one or more RUs, and forward downlink fronthaul data from the one or more base station entities to the one or more RUs. The method further includes transmitting update(s) for forwarding rules to the Ethernet switch(es) based on the determined configuration for the Ethernet switch(es).

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a multicast-broadcast user service description message. The UE may communicate, using a multicast-broadcast service (MBS) transport function (MBSTF) client, with an MBS entity of the network entity, in accordance with information included in the user service description message, wherein the MBS entity is split into a multicast delivery function and a unicast application server. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a multicast-broadcast user service description message. The UE may communicate, using a multicast-broadcast service (MBS) transport function (MBSTF) client, with an MBS entity of the network entity, in accordance with information included in the user service description message, wherein the MBS entity is split into a multicast delivery function and a unicast application server. Numerous other aspects are described.