Communication methods, user devices, network nodes, programs, chipsets, and systems

Abstract

A communication method used in a mobile communication system providing a multicast / broadcast service (MBS) comprises: a step in which a base station provides two types of multicast control channel (MCCH) in a cell of the base station, the two types of MCCH being a first MCCH for a broadcast communication service and a second MCCH for a multicast communication service; and a step in which the base station transmits, to a user device, mapping information indicating the correspondence between an MBS session identifier of an MBS session and a type of MCCH that transmits a point-to-multipoint (PTM) configuration corresponding to the MBS session.

Claims

1. A communication method used in a mobile communication system that provides multicast / broadcast services (MBS), The network node transmits a first PTM (Point-to-Multipoint) configuration, including the MBS session identifier of the broadcast MBS session, on the first multicast control channel (MCCH) for the broadcast communication service, The aforementioned network node transmits a second PTM configuration, including the MBS session identifier of the multicast MBS session, on the second MCCH for multicast communication services. The network node performs MCCH transmission without transmitting PTM settings containing the same MBS session identifier in the first MCCH and the second MCCH. Communication method.

2. A user device used in a mobile communication system that provides multicast / broadcast services (MBS), The receiving unit has a first PTM (Point-to-Multipoint) setting, which includes the MBS session identifier of a broadcast MBS session, received on a first multicast control channel (MCCH) for broadcast communication services, and a second PTM setting, which includes the MBS session identifier of a multicast MBS session, received on a second MCCH for multicast communication services. The receiving unit receives MCCH transmissions in which PTM settings containing the same MBS session identifier are not transmitted on the first MCCH and the second MCCH. User device.

3. A network node used in a mobile communication system that provides multicast / broadcast services (MBS), The device has a transmitting unit that transmits a first PTM (Point-to-Multipoint) setting, including the MBS session identifier of a broadcast MBS session, on a first multicast control channel (MCCH) for broadcast communication services, and a second PTM setting, including the MBS session identifier of a multicast MBS session, on a second MCCH for multicast communication services. The transmitting unit performs MCCH transmission without transmitting PTM settings containing the same MBS session identifier in the first MCCH and the second MCCH. Network node.

4. A program for a user device used in a mobile communication system that provides multicast / broadcast services (MBS), wherein the user device has the following capabilities: The process involves receiving the first PTM (Point-to-Multipoint) setting, which includes the MBS session identifier of the broadcast MBS session, on the first multicast control channel (MCCH) for the broadcast communication service, The process involves receiving the second PTM setting, which includes the MBS session identifier of the multicast MBS session, on the second MCCH for multicast communication services, The process of receiving an MCCH transmission in which the same MBS session identifier is not included in the PTM settings transmitted in the first MCCH and the second MCCH is executed. program.

5. A chipset for user equipment used in a mobile communication system that provides multicast / broadcast services (MBS), The process involves receiving the first PTM (Point-to-Multipoint) setting, which includes the MBS session identifier of the broadcast MBS session, on the first multicast control channel (MCCH) for the broadcast communication service, The process involves receiving the second PTM setting, which includes the MBS session identifier of the multicast MBS session, on the second MCCH for multicast communication services, The process of receiving an MCCH transmission in which the same MBS session identifier is not included in the PTM settings transmitted in the first MCCH and the second MCCH is executed. Chipset.

6. A system including user equipment and network nodes used in a mobile communication system that provides multicast / broadcast services (MBS), The User device is The receiving unit has a first PTM (Point-to-Multipoint) setting, including the MBS session identifier of a broadcast MBS session, which is received from the network node on a first multicast control channel (MCCH) for broadcast communication services, and a second PTM setting, including the MBS session identifier of a multicast MBS session, which is received from the network node on a second MCCH for multicast communication services. The receiving unit receives an MCCH transmission from the network node in which a PTM setting containing the same MBS session identifier is not transmitted in the first MCCH and the second MCCH. The aforementioned network node is The device has a transmission unit that transmits the first PTM setting to the user device via the first MCCH and the second PTM setting to the user device via the second MCCH. The transmitting unit performs MCCH transmission without transmitting PTM settings containing the same MBS session identifier in the first MCCH and the second MCCH. system.

7. If the user device is not participating in the multicast MBS session, the first PTM setting received on the first MCCH is applied, If the user device is participating in the multicast MBS session, the second PTM setting received by the second MCCH is applied. The communication method according to claim 1.

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