Method and system for transmitting and receiving broadcast service data in a wireless communication system

Abstract

A method and system are provided for transmitting broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme in which data transmission is achieved through a downlink and an uplink within one frame. The system being connected to a broadcast server. The system and method include allocating a connection identifier (CID) to each broadcast service for identification of a broadcast service packet transmitted over the downlink, and transmitting broadcast service information for each broadcast service; and receiving a broadcast packet from the broadcast server, and transmitting a physical layer transmission information element (DL-MAP) including a broadcast service CID for the broadcast packet through the downlink0.

What is claimed is: 
     
       1. A method for transmitting broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the method comprising the steps of:
 generating a frame of a current transmission of a broadcast service, the frame including a broadcast packet and a physical layer transmission information element (DL_MAP) comprising a broadcast service connection identifier (CID) for the broadcast packet and information indicating a data region where the broadcast packet is located in a the frame, 
 wherein the frame further comprising a broadcast configuration message including timing information associated with a next transmission of the broadcast service relative to the current transmission; and 
 transmitting the frame to at least one mobile station. 
 
     
     
       2. The method of  claim 1 , wherein the data region information comprises an offset of an OFDMA symbol, a number of OFDMA symbol, an offset of a subchannel and a number of subchannels. 
     
     
       3. The method of  claim 1 , wherein the timing information associated with the next transmission comprises an offset value indicating a difference between the current frame and a next frame at which the broadcast service is provided and a period value indicating period between the frames. 
     
     
       4. The method of  claim 1 , wherein the wireless communication system is compliant with an Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard. 
     
     
       5. A method for receiving broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the method comprising the steps of:
 receiving, by a receiver, a frame of a current transmission of a broadcast service, the frame including a broadcast packet and a physical layer transmission information element (DL_MAP) comprising a broadcast service connection identifier (CID) for the broadcast packet and information indicating a data region where the broadcast packet is located in a frame, 
 wherein the frame further comprising a broadcast configuration message including timing information associated with a next transmission of the broadcast service relative to the current transmission.; and  
 receiving, by the receiver, a next frame of the next transmission including broadcast packets according to the timing information associated with the next-transmission. 
 
     
     
       6. The method of  claim 5 , wherein the data region information comprises an offset of an OFDMA symbol, a number of OFDMA symbol, an offset of a subchannel and a number of subchannels. 
     
     
       7. The method of  claim 5 , wherein the timing information associated with the next-transmission comprises an offset value indicating a difference between the current frame and a next frame at which the broadcast service is provided and a period value indicating period between the frames. 
     
     
       8. The method of  claim 7 , further comprising a step of periodically receiving a frame including broadcast packets according to the period value. 
     
     
       9. The method of  claim 5 , wherein the wireless communication system is complaint with an Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard. 
     
     
       10. A method for transmitting broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the method comprising the steps of:
 transmitting, by a transmitter, a current frame of a current transmission of a broadcast service, the current frame including a broadcast packet and a physical layer transmission information element (DL_MAP) comprising a broadcast service connection identifier (CID) for the broadcast packet and information indicating a data region where the broadcast packet is located in a frame; 
 wherein the DL_MAP further comprising a broadcast MAP information element including an offset value indicating a difference between a current frame and a next frame of a next transmission at which the broadcast service is provided. 
 
     
     
       11. The method of  claim 10 , wherein the data region information comprises an offset of an OFDMA symbol, a number of OFDMA symbol, an offset of a subchannel and a number of subchannels. 
     
     
       12. The method of  claim 10 , wherein the wireless communication system is compliant with an Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard. 
     
     
       13. A method for receiving broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the method comprising the steps of:
 receiving, by a receiver, a current frame of a current transmission of a broadcast service, the current frame including a broadcast packet and a physical layer transmission information element (DL_MAP) comprising a broadcast service connection identifier (CID) for the broadcast packet and information indicating a data region where the broadcast packet is located in a frame; 
 wherein the DL_MAP further comprising a broadcast MAP information element including a offset value indicating a timing difference between the current frame and a next frame of a next transmission at which the broadcast service is provided; and 
 receiving, by a receiver, the next frame including broadcast packets according to the offset value. 
 
     
     
       14. The method of  claim 13 , wherein the data region information comprises an offset of an OFDMA symbol, a number of OFDMA symbol, an offset of a subchannel and a number of subchannels. 
     
     
       15. The method of  claim 13 , wherein the wireless communication system is compliant with an Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard. 
     
     
       16. A method for transmitting broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the method comprising the steps of:
 transmitting, by a transmitter, a current of a transmission of a broadcast service, the current frame including a broadcast packet and a physical layer transmission information element (DL_MAP) comprising a broadcast service connection identifier (CID) for the broadcast packet and information indicating a data region where the broadcast packet is located in a frame, 
 wherein the broadcast packet comprising a MAC Layer header including an offset value indicating a timing difference between the current frame and a next frame of a next transmission at which the broadcast service is provided. 
 
     
     
       17. The method of  claim 16 , wherein the data region information comprises an offset of an OFDMA symbol, a number of OFDMA symbol, an offset of a subchannel and a number of subchannels. 
     
     
       18. The method of  claim 16 , wherein the MAC Layer header further including the CID. 
     
     
       19. The method of  claim 16 , wherein the wireless communication system is compliant with an Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard. 
     
     
       20. A method for receiving broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the method comprising the steps of:
 receiving, by a receiver, a current frame of a current transmission of a broadcast service, the current frame including packet and a physical layer transmission information element (DL_MAP) comprising a broadcast service connection identifier (CID) for the broadcast packet and information indicating a data region where the broadcast packet is located in a frame, 
 wherein the broadcast packet comprising a MAC Layer header including an offset value indicating a difference between the current frame and a next frame of a next transmission at which the broadcast service is provided; and 
 receiving, by the receiver, the next frame including broadcast packets according to the offset value. 
 
     
     
       21. The method of  claim 20 , wherein the data region information comprises an offset of an OFDMA symbol, a number of OFDMA symbol, an offset of a subchannel and a number of subchannels. 
     
     
       22. The method of  claim 20 , wherein the MAC Layer header further including the CID. 
     
     
       23. The method of  claim 20 , wherein the system is compliant with an Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard. 
     
     
       24. A system for transmitting broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the system comprises:
 a transmitter for transmitting a frame of a current transmission of a broadcast service, the frame including a broadcast packet and a physical layer transmission information element (DL_MAP) comprising a broadcast service connection identifier (CID) for the broadcast packet and information indicating a data region where the broadcast packet is located in a frame, wherein the frame including timing information associated with a next transmission of the broadcast service relative to the current transmission; and 
 a receiver for receiving a next frame of the next transmission including broadcast packets according to the timing information associated with the next transmission. 
 
     
     
       25. The method of  claim 24  wherein the timing information associated with the next transmission comprises a offset value indicating a difference between a current frame and a next frame at which the broadcast service is provided and a period value indicating a time period between the frames. 
     
     
       26. The method of claim 5, wherein the timing information associated with the next transmission comprises a value indicating a difference between the current frame and the next frame at which the broadcast service is provided. 
     
     
       27. An apparatus for transmitting broadcast service data in a broadcasting system, the apparatus comprising:
 a processor for generating a frame of a current transmission of a broadcast service, the frame including broadcast service data and information for physical layer transmission, the information comprising an identifier for identifying the broadcast service and information indicating a data region where the broadcast service data is located in the frame; and   a transmitter for transmitting the frame to at least one receiver,   wherein the information for physical layer transmission further comprises timing information indicating an interval between a frame of a next transmission of the broadcast service and the frame of the current transmission.   
     
     
       28. The apparatus of claim 27, wherein the data region information comprises an offset of an OFDMA symbol, a number of OFDMA symbols, an offset of a subchannel and a number of subchannels. 
     
     
       29. The apparatus of claim 27, wherein the timing information associated with the next transmission comprises a value indicating period between the frames at which the broadcast service is provided. 
     
     
       30. The apparatus of claim 27, wherein the timing information associated with the next transmission comprises a value indicating a difference between the current frame and the next frame at which the broadcast service is provided. 
     
     
       31. An apparatus for receiving broadcast service data in a broadcasting system, the apparatus comprising:
 a receiver for receiving a frame of a current transmission of a broadcast service; and   a processor for processing the frame including broadcast service data and information for physical layer transmission, the information comprising an identifier for identifying the broadcast service, information indicating a data region where the broadcast service data is located in the frame and timing information indicating an interval between a frame of a next transmission of the broadcast service and the frame of the current transmission,   wherein the receiver receives the frame of the next transmission based on the timing information.   
     
     
       32. The apparatus of claim 31, wherein the data region information comprises an offset of an OFDMA symbol, a number of OFDMA symbols, an offset of a subchannel and a number of subchannels. 
     
     
       33. The apparatus of claim 31, wherein the timing information associated with the next transmission comprises a value indicating period between the frames at which the broadcast service is provided. 
     
     
       34. The apparatus of claim 31, wherein the timing information associated with the next transmission comprises a value indicating a difference between the current frame and the next frame at which the broadcast service is provided. 
     
     
       35. A method for transmitting broadcast service data in a broadcasting system, the method comprising the steps of:
 generating, by a transmitter, a frame of a current transmission of a broadcast service, the frame including broadcast service data and information for physical layer transmission, the information comprising an identifier for identifying the broadcast service and information indicating a data region where the broadcast service data is located in the frame,   wherein the information for physical layer transmission further comprises timing information indicating an interval between a frame of a next transmission of the broadcast service and the frame of the current transmission; and   transmitting the frame of the current transmission to at least one receiver.   
     
     
       36. The method of claim 35, wherein the information indicating a data region comprises an offset of an OFDMA symbol, a number of OFDMA symbol, an offset of a subchannel and a number of subchannels. 
     
     
       37. The method of claim 35, wherein the timing information associated with the next transmission comprises a value indicating period between the frames at which the broadcast service is provided. 
     
     
       38. The method of claim 35, wherein the timing information associated with the next transmission comprises a value indicating a difference between the current frame and the next frame at which the broadcast service is provided. 
     
     
       39. A method for receiving broadcast service data in a broadcasting system, the method comprising the steps of:
 receiving, by a receiver, a frame of a current transmission of a broadcast service, the frame including broadcast service data and information for physical layer transmission, the information comprising an identifier for identifying the broadcast service and information indicating a data region where the broadcast service is located in the frame,   wherein the information for physical layer transmission further comprises timing information indicating an interval between a frame of a next transmission of the broadcast service and the frame of the current transmission; and   receiving, by the receiver, the frame of the next transmission based on the timing information.   
     
     
       40. The method of claim 39, wherein the information indicating a data region comprises an offset of an OFDMA symbol, a number of OFDMA symbol, an offset of a subchannel and a number of subchannels. 
     
     
       41. The method of claim 39, wherein the timing information associated with the next transmission comprises a value indicating period between the frames at which the broadcast service is provided.