Abstract: A system, method, and network node for priority handling in a communications system are presented. The system comprises one or more data bearers and a priority handling module. Each of the one or more bearers is configured to transport one or more of the data flows. The priority handling module is configured to prioritize between data flows, and is further configured to: receive a request for priority configuration or re-configuration of a first data flow; obtain a priority sharing identifier of the first data flow; identify other data flows in the communication system having the priority sharing identifier of the first transport data flow; and update priority rules associated with the first data flow and also with any other identified data flows in the communication system having the priority sharing identifier of the first transport data flow to agree with a shared priority rule.

Abstract: There is provided mechanisms for paging at least one client node in a group communications system. A method is performed by a control node of the group communications system. The method comprises obtaining a need for paging the at least one client node in the group communications system. The method comprises transmitting a paging message for the at least one client node on a multimedia broadcast multicast service (MBMS) bearer to the at least one client node. There is also provided a control node configured to perform such a method. There is also provided mechanisms for receiving paging in a group communications system.

Abstract: There is provided mechanisms for providing a public warning message using MBMS in a wireless communications system. A method is performed by a control node. The method comprises activating an MBMS bearer to be used for transmission of the public warning message. The method comprises announcing the MBMS bearer in a public warning service announcement to at least one client node over a cellular broadcast channel. The method comprises transmitting the public warning message on the MBMS bearer.

Abstract: There is provided mechanisms for paging at least one client node in a group communications system. A method is performed by a control node of the group communications system. The method comprises obtaining a need for paging the at least one client node in the group communications system. The method comprises transmitting a paging message for the at least one client node on a multimedia broadcast multicast service (MBMS) bearer to the at least one client node. There is also provided a control node configured to perform such a method. There is also provided mechanisms for receiving paging in a group communications system.

Abstract: Service continuity is provided between Multicast-Broadcast Single Frequency Networks (MBSFNs) for a wireless device receiving a service. A radio base station broadcasts the service on a Multicast-Broadcast Multimedia Service (MBMS) resource of a first MBSFN. The radio base station also broadcasts information identifying a different MBMS resource over which the service is being broadcast by a different radio base station in a different MBSFN to enable service continuity between the first MBSFN and different MBSFN for the wireless device. The wireless device receives the service broadcast on the MBMS resource of the first MBSFN from the radio base station. The wireless device also receives the information that identifies the different MBMS resource over which the service is being broadcast by the different radio base station in the different MBSFN. The information enables service continuity between the first MBSFN and different MBSFN for the wireless device.

Abstract: There is provided mechanisms for service interruption reporting of a multicast bearer for group communications. A method is performed by a client node. The method comprises obtaining instruction from a control node of the multicast bearer, where the instruction instructs whether or not the client node is to report service interruption of the multicast bearer. The method comprises detecting service interruption of the multicast bearer. The method comprises selectively reporting the service interruption to the control node in accordance with the instruction.

Abstract: There is provided mechanisms for service interruption reporting of a multicast bearer for group communications. A method is performed by a client node. The method comprises obtaining instruction from a control node of the multicast bearer, where the instruction instructs whether or not the client node is to report service interruption of the multicast bearer. The method comprises detecting service interruption of the multicast bearer. The method comprises selectively reporting the service interruption to the control node in accordance with the instruction.

Abstract: A method for paging at least one client node in a group communications system. The method is performed by a control node of the group communications system. The method comprising obtaining a need for paging the at least one client node in the group communications system and transmitting a paging message for the at least one client node in a Single Cell Point To Multipoint, SC-PTM, transmission to the at least one client node.

Abstract: There is provided mechanisms for paging at least one client node in a group communications system. A method is performed by a control node of the group communications system. The method comprises obtaining a need for paging the at least one client node in the group communications system. The method comprises transmitting a paging message for the at least one client node on a multimedia broadcast multicast service (MBMS) bearer to the at least one client node. There is also provided a control node configured to perform such a method. There is also provided mechanisms for receiving paging in a group communications system.

Abstract: There is provided mechanisms for quality evaluation of an MBMS bearer. A method is performed by a wireless device. The method comprises determining a measurement of signal quality of a reference signal received separate from the MBMS bearer, the reference signal being from at least one radio access network node, to obtain a quality measure for the MBMS bearer. The method comprises estimating an expected BLER of the MBMS bearer from the measurement and from an MCS used for a MCH of the MBMS bearer.

Abstract: In accordance with particular embodiments, a method, performed by a control node, for multimedia broadcast multicast service (MBMS) bearer handling in a group communications system comprises activating and announcing a first MBMS bearer for supporting floor control in a group call to client nodes of the group call. The method additionally includes activating and announcing at least one second MBMS bearer for supporting media transmission in the group call. The floor control and the media transmission are supported on separate MBMS bearers for the group call. In accordance with certain embodiments, a method, performed by a client node for MBMS bearer handling in a group communications system comprises obtaining a broadcast service announcement of a first MBMS bearer for supporting floor control in a group call from a control node of the group call.

Abstract: A method for transmitting group metadata in a group communications system is disclosed. The method is performed by a control node, and comprises obtaining (S102) a need for transmission of group metadata for a group (160a, 160b) of client nodes in the group communications system and also broadcasting (S108) the group metadata on a multi-media broadcast multicast service, MBMS, bearer to the group of client nodes.

Abstract: In accordance with particular embodiments, a method, performed by a control node for multimedia broadcast multicast service (MBMS) bearer handling comprises activating and announcing a first MBMS bearer for supporting floor control in a group call to client nodes of the group call. The method additionally includes activating and announcing at least one second MBMS bearer for supporting media transmission in the group call. The floor control and the media transmission are supported on separate MBMS bearers. In accordance with certain embodiments, a method, performed by a client node for MBMS bearer handling comprises obtaining a broadcast service announcement of a first MBMS bearer for supporting floor control in a group call. The method additionally includes obtaining a broadcast service announcement of at least one second MBMS bearer for supporting media transmission in the group call. The floor control and the media transmission are supported on separate MBMS bearers.

Abstract: There is provided mechanisms for group call setup in a group communications system. A method is performed by a control node. The method comprises obtaining a need for transmission of group call media to a group of client nodes in the group communications system. The method comprises activating a previously announced second Multimedia Broadcast Multicast Services (MBMS) bearer in response to having obtained the need. The method comprises transmitting group call setup message on the second MBMS bearer, wherein the group call setup message comprises at least an identity of a previously announced and activated first MBMS bearer. There is also provided a control node configured to perform such a method. There is further provided a method performed by a client node and a client node configured to perform such a method.

Abstract: There is provided mechanisms for service interruption reporting of a multicast bearer for group communications. A method is performed by a client node. The method comprises obtaining instruction from a control node of the multicast bearer, where the instruction instructs whether or not the client node is to report service interruption of the multicast bearer. The method comprises detecting service interruption of the multicast bearer. The method comprises selectively reporting the service interruption to the control node in accordance with the instruction.

Abstract: Service continuity is provided between Multicast-Broadcast Single Frequency Networks (MBSFNs) for a wireless device receiving a service. A radio base station broadcasts the service on a Multicast-Broadcast Multimedia Service (MBMS) resource of a first MBSFN. The radio base station also broadcasts information identifying a different MBMS resource over which the service is being broadcast by a different radio base station in a different MBSFN to enable service continuity between the first MBSFN and different MBSFN for the wireless device. The wireless device receives the service broadcast on the MBMS resource of the first MBSFN from the radio base station. The wireless device also receives the information that identifies the different MBMS resource over which the service is being broadcast by the different radio base station in the different MBSFN. The information enables service continuity between the first MBSFN and different MBSFN for the wireless device.

Abstract: The present disclosure relates to a wireless communication system (200) comprising one or more Radio Base Stations (220), RBSs, associated to a first Multicast-Broadcast Single Frequency Network (210), MBSFN, the one or more RBSs associated to the first MBSFN being arranged to broadcast transport blocks by using a first communications resource (f1), the transport blocks transporting a service (A) to one or more wireless devices (231, 232, 233) in the wireless communication system (200), the wireless communication system (200) also comprising at least one further RBS (250) not associated to the first MBSFN (210), the at least one further RBS (250) being arranged to broadcast information relating to the first communications resource (f1) used for broadcasting service (A) in the first MBSFN.

Abstract: The present disclosure relates to a wireless communication system (200) comprising at least a first MBSFN (210), Multicast-Broadcast Single Frequency Network, and a second MBSFN (220). The MBSFNs comprise MBSFN transmitters (215, 225, 230) arranged to broadcast transport blocks using communications resources (f1, f2, f3, f4). The transport blocks transport services (A,B,C) to one or more wireless devices (130, 131, 132, 133) in the wireless communication system (200), wherein at least one of the MBSFN transmitters (230) is associated to both the first (210) and to the second (220) MBSFN, and is arranged to transmit transport blocks transporting one or more services in both the first and in the second MBSFN.

Abstract: A system, method, and network node for priority handling in a communications system are presented. The system comprises one or more data bearers and a priority handling module. Each of the one or more bearers is configured to transport one or more of the data flows. The priority handling module is configured to prioritize between data flows, and is further configured to: receive a request for priority configuration or re-configuration of a first data flow; obtain a priority sharing identifier of the first data flow; identify other data flows in the communication system having the priority sharing identifier of the first transport data flow; and update priority rules associated with the first data flow and also with any other identified data flows in the communication system having the priority sharing identifier of the first transport data flow to agree with a shared priority rule.

Abstract: In accordance with particular embodiments, a method, performed by a control node, for multimedia broadcast multicast service, MBMS, bearer setup in a group communications system comprises activating and announcing an MBMS bearer to the client nodes. The MBMS bearer is independent of any particular group of client nodes. The method also includes obtaining a call setup message for a group call from a first client node of the client nodes. The method additionally includes broadcasting a connect message for the group call to at least one other client node of the client nodes in response to having received the call setup message. In accordance with certain embodiments, a method, performed by a client node, for MBMS bearer setup in a group communications system comprises obtaining a service announcement of an MBMS bearer from a control node. The MBMS bearer is independent of any particular group of client nodes.