Multicast broadcast single frequency network data scheduling and handling
View Patent ↗A system is provided for scheduling for a multicast broadcast single frequency network (MBSFN). The system includes a central control configured to promote a plurality of enhanced node Bs (ENBs) transmitting one or more multicast traffic channels (MTCHs). The one or more MTCHs are provided during a variable scheduling period (SP) and include a data portion that contains MBSFN traffic content and a variable scheduling portion that contains scheduling information related to the MBSFN traffic content.
1. A method for providing a plurality of multicast traffic channels (MTCHs), comprising:
determining the plurality of MTCHs that belong to a single multicast broadcast single frequency network (MSBFN);
selecting a multiplexing scheme for the plurality of MTCHs; and
mapping the plurality of MTCHs according to the multiplexing scheme to a single multicast transport channel (MCH) layer over a variable scheduling period (SP), wherein traffic from the plurality of MTCHs is allocated to a plurality of transport blocks (TBs) of the SP,
wherein the selected multiplexing scheme is a time-first multiplexing scheme,
wherein traffic from each of the plurality of MTCHs is sequentially mapped to a plurality of sub-frames of the SP, such that all traffic from a first MTCH is mapped to the sub-frames of the SP before mapping traffic from a second MTCH to the sub-frames of the SP, and
wherein at least some of the plurality of TBs of one of the sub-frames includes traffic from more than one of the MTCHs during transitioning from transmitting a last remaining content from the first MTCH to transmitting a first content from the second MTCH.
2. The method of claim 1 , wherein a central control determines a length of the SP, determines which of the plurality of MTCHs belong to the MSBFN, and selects the multiplexing scheme for the plurality of MTCHs.
3. The method of claim 1 , wherein a SP length is dynamic over time and assigned by a central control.
4. A user equipment, comprising:
a processor configured to receive a multicast broadcast single frequency network (MSBFN) transmission, the MSBFN transmission comprising a plurality of multiplexed MTCHs mapped according to a time-first multiplexing scheme to a single multicast transport channel (MCH) over a variable scheduling period (SP), wherein traffic from the plurality of multiplexed MTCHs is allocated to a plurality of transport blocks (TBs) of the SP, wherein traffic from each of the plurality of MTCHs is sequentially mapped to a plurality of sub-frames of the SP, such that all traffic from a first MTCH is mapped to the sub-frames of the SP before mapping traffic from a second MTCH to the sub-frames of the SP, wherein at least some of the plurality of TBs of one of the sub-frames includes traffic from more than one of the MTCHs during transitioning from transmitting a last remaining content from the first MTCH to transmitting a first content from the second MTCH.
5. The user equipment of claim 1 , wherein a SP length is dynamic over time and assigned by a central control.