MBS data transmission method and device therefor
Provided are a method and device for transmitting/receiving multicast/broadcast service (MBS) data in an NR radio access network. The method of UE for receiving MBS data may include receiving, from a base station, configuration information for receiving MBS session data; based on the configuration information, configuring a MBS radio bearer for receiving the MBS session data; and receiving a MAC protocol data unit (PDU) in which two or more mutually different logical channels associated with the same group-radio network temporary identifier (G-RNTI) are multiplexed.
1 . A method for receiving multicast/broadcast service (MBS) data by a user equipment (UE), the method comprising:
receiving configuration information for receiving MBS session data from a base station;
configuring an MBS radio bearer for receiving the MBS session data based on the configuration information; and
receiving the MBS session data using a logical channel identifier associated with the MBS radio bearer,
wherein the configuration information for receiving the MBS session data includes an MBS radio bearer identifier and the logical channel identifier associated with the MBS radio bearer,
wherein the MBS radio bearer identifier is configured in association with MBS session identification information,
wherein a logical channel for processing the MBS session data is separately identified based on a group-radio network identifier (G-RNTI) indicated through an MBS control channel (MCCH) and the logical channel identifier associated with the MBS radio bearer, and
wherein the logical channel identifier associated with the MBS radio bearer is allocated using a 2-octet extended logical channel ID (LCID).
2 . The method of claim 1 , wherein the configuration information for receiving the MBS session data is received through a radio resource control (RRC) reconfiguration message or an MBS control channel (MCCH) message.
3 . The method of claim 1 , wherein the MBS radio bearer identifier is configured in association with MBS QoS flow identification information.
4 . The method of claim 1 , wherein two or more MBS session data are received using same group-radio network temporary identifier (G-RNTI) or different G-RNTIs.
5 . A method for transmitting multicast/broadcast service (MBS) data by a base station, the method comprising:
transmitting configuration information to a user equipment (UE) for enabling the UE to receive MBS session data;
configuring an MBS radio bearer for transmitting the MBS session data based on the configuration information; and
transmitting the MBS session data using a logical channel identifier associated with the MBS radio bearer,
wherein the configuration information for receiving the MBS session data includes an MBS radio bearer identifier and the logical channel identifier associated with the MBS radio bearer,
wherein the MBS radio bearer identifier is configured in association with MBS session identification information,
wherein a logical channel for processing the MBS session data is separately identified based on a group-radio network identifier (G-RNTI) indicated through an MBS control channel (MCCH) and the logical channel identifier associated with the MBS radio bearer, and
wherein the logical channel identifier associated with the MBS radio bearer is allocated using a 2-octet extended logical channel ID (LCID).
6 . The method of claim 5 , wherein the configuration information for receiving the MBS session data is transmitted through a radio resource control (RRC) reconfiguration message or an MBS control channel (MCCH) message.
7 . The method of claim 5 , wherein the MBS radio bearer identifier is configured in association with MBS QoS flow identification information.
8 . A user equipment (UE) for receiving multicast/broadcast service (MBS) data, the UE comprising:
a receiver configured to receive configuration information for receiving MBS session data from a base station; and
a controller configured to configure an MBS radio bearer for receiving the MBS session data based on the configuration information,
wherein the receiver receives the MBS session data using a logical channel identifier associated with the MBS radio bearer,
wherein the configuration information for receiving the MBS session data includes an MBS radio bearer identifier and the logical channel identifier associated with the MBS radio bearer,
wherein the MBS radio bearer identifier is configured in association with MBS session identification information,
wherein a logical channel for processing the MBS session data is separately identified based on a group-radio network identifier (G-RNTI) indicated through an MBS control channel (MCCH) and the logical channel identifier associated with the MBS radio bearer, and
wherein the logical channel identifier associated with the MBS radio bearer is allocated using a 2-octet extended logical channel ID (LCID).
9 . The UE of claim 8 , wherein the configuration information for receiving the MBS session data is received through a radio resource control (RRC) reconfiguration message or an MBS control channel (MCCH) message.
10 . The UE of claim 8 , wherein the MBS radio bearer identifier is configured in association with MBS QoS flow identification information.
11 . The UE of claim 8 , wherein two or more MBS session data are received using same group-radio network temporary identifier (G-RNTI) or different G-RNTIs.
12 . A base station for transmitting multicast/broadcast service (MBS) data, the base station comprising:
a transmitter configured to transmit configuration information to a user equipment (UE) for enabling the UE to receive MBS session data; and
a controller configured to configure an MBS radio bearer for transmitting the MBS session data based on the configuration information,
wherein the transmitter transmits the MBS session data using a logical channel identifier associated with the MBS radio bearer,
wherein the configuration information for receiving the MBS session data includes an MBS radio bearer identifier and the logical channel identifier associated with the MBS radio bearer,
wherein the MBS radio bearer identifier is configured in association with MBS session identification information,
wherein a logical channel for processing the MBS session data is separately identified based on a group-radio network identifier (G-RNTI) indicated through an MBS control channel (MCCH) and the logical channel identifier associated with the MBS radio bearer, and
wherein the logical channel identifier associated with the MBS radio bearer is allocated using a 2-octet extended logical channel ID (LCID).
13 . The base station of claim 12 , wherein the configuration information for receiving the MBS session data is transmitted through a radio resource control (RRC) reconfiguration message or an MBS control channel (MCCH) message.
14 . The base station of claim 12 , wherein the MBS radio bearer identifier is configured in association with MBS QoS flow identification information.