Method of transmitting multicast and broadcast service data
A resource allocation method for a Multicast and Broadcast Service (MBS) and a method for transmitting MBS data in a wireless access system are disclosed. The MBS transmission method for a multicast broadcast single frequency network (MBSFN) zone includes, constructing a resource zone by sequentially allocating predetermined symbol areas preferentially on a frequency axis, mapping predetermined MBSs provided from the MBSFN zone to the predetermined symbol areas, and transmitting a first MBS among the predetermined MBSs to mobile stations located at an edge of the MBSFN zone. The first MBS is equal to a second MBS among MBSs provided from a neighbor MBSFN zone. The first MBS and the second MBS are transmitted to the same time zone according to a time division multiplexing (TDM) method.
1. A multicast and broadcast service (MBS) data transmission method for use in a multicast broadcast single frequency network (MBSFN) zone, the method comprising:
constructing a resource region in a downlink subframe for transmitting the MBS data by sequentially allocating predetermined resource blocks to the resource region according to a frequency axis and a time axis;
dividing the MBS data into one or more segments which has the size of a predetermined resource block;
mapping the divided MBS data to each of the resource blocks of the resource region; and
transmitting a first MBS data among the mapped MBS data to mobile stations located at an edge of the MBSFN zone, when a mobile station is within a common area between an edge of the MBSFN zone and an edge of a neighbor MBSFN zone,
wherein the resource blocks are sequentially allocated to the resource region according to the frequency axis, and then are repeatedly allocated to the resource region according to the time axis,
wherein a second MBS data, which is among MBS data provided from the neighbor MBSFN zone, and the first MBS data are the same,
wherein the first MBS data and the second MBS data are transmitted to the same time zone according to a time division multiplexing (TDM) method by using a same method for allocating the resource region, and
wherein the divided MBS data are mapped to the resource region using a symbol offset value and predetermined consecutive resource blocks.
2. The MBS transmission method according to claim 1 , wherein different MBS data among MBS data provided from the MBSFN zone and other MBS data provided from the neighbor MBSFN zone are selectively provided to the mobile stations.
3. The MBS transmission method according to claim 1 , wherein different MBS data among MBS data provided from the MBSFN zone and other MBS data provided from the neighbor MBSFN zone are not provided to the mobile stations.
4. The MBS transmission method according to claim 1 , wherein the divided MBS data are sequentially mapped to the resource region using predetermined consecutive resource blocks.
5. The MBS transmission method according to claim 1 , wherein the first MBS data and the second MBS data are provided to the mobile stations using a same symbol offset value.
6. The MBS transmission method according to claim 1 , wherein the divided MBS data are mapped to the resource region using different methods for allocating the resource region for individual MBS data.
7. The MBS transmission method according to claim 1 , wherein the divided MBS data are mapped to the resource region using different method for allocating the resource region in units of a symbol area.
8. The MBS transmission method according to claim 1 , wherein the divided MBS data are mapped to the resource region using the time division multiplexing (TDM) method.
9. The MBS transmission method according to claim 8 , wherein the same MBS data among the MBS data provided from the MBSFN zone and other MBS data provided from the neighbor MBSFN zone are allocated to a same time zone respectively.
10. A multicast and broadcast service (MBS) data transmission method for use in a multicast broadcast single frequency network (MBSFN) zone, the method comprising:
constructing a resource region in a downlink subframe for transmitting the MBS data by sequentially allocating predetermined resource blocks to the resource region according to a frequency axis and a time axis;
dividing the MBS data into one or more segments which has the size of a predetermined resource block;
mapping the divided MBS data to each of the resource blocks of the resource region; and
transmitting a first MBS data among the mapped MBS data to mobile stations located at an edge of the MBSFN zone, when a mobile station is within a common area between an edge of the MBSFN zone and an edge of a neighbor MBSFN zone,
wherein the resource blocks are sequentially allocated to the resource region according to the frequency axis, and then are repeatedly allocated to the resource region according to the time axis,
wherein a second MBS data, which is among MBS data provided from the neighbor MBSFN zone, and the first MBS data are the same,
wherein the first MBS data and the second MBS data are transmitted to the same time zone according to a time division multiplexing (TDM) method by using a same method for allocating the resource region, and
wherein the first MBS data and the second MBS data are provided to the mobile stations using a same symbol offset value.
11. The MBS transmission method according to claim 10 , wherein different MBS data among MBS data provided from the MBSFN zone and other MBS data provided from the neighbor MBSFN zone are selectively provided to the mobile stations.
12. The MBS transmission method according to claim 10 , wherein different MBS data among MBS data provided from the MBSFN zone and other MBS data provided from the neighbor MBSFN zone are not provided to the mobile stations.
13. The MBS transmission method according to claim 10 , wherein the divided MBS data are sequentially mapped to the resource region using predetermined consecutive resource blocks.
14. The MBS transmission method according to claim 10 , wherein the divided MBS data are mapped to the resource region using different methods for allocating the resource region for individual MBS data.
15. The MBS transmission method according to claim 10 , wherein the divided MBS data are mapped to the resource region using different method for allocating the resource region in units of a symbol area.
16. The MBS transmission method according to claim 10 , wherein the divided MBS data are mapped to the resource region using the time division multiplexing (TDM) method.
17. The MBS transmission method according to claim 16 , wherein the same MBS data among the MBS data provided from the MBSFN zone and other MBS data provided from the neighbor MBSFN zone are allocated to a same time zone respectively.