Method for transmitting traffic indication message in wireless communication system, base station thereof, method for receiving the same, terminal thereof and message structure thereof
First Claim
1. A system for transmitting a traffic indication (MOB_TRF-IND) message in a Broadband Wireless Access communication system, comprising:
- a Base Station (BS) for transmitting the MOB_TRF-IND message including a sleep mode ID (SLPID) Group Indication Bitmap and a Traffic Indication Bitmap,wherein the SLPID Group Indication Bitmap includes N SLPID Group Indication bits, each of the N SLPID Group Indication bits corresponding to each of N SLPID groups, and the N SLPID groups are generated by grouping N*M SLPIDs,wherein each of the N SLPID Group Indication bits indicates that there is no traffic for M Mobile Stations (MSs) mapped to M SLPIDs included in a corresponding SLPID group or that there is traffic for at least one of the M MSs mapped to the M SLPIDs included in the corresponding SLPID group,wherein the Traffic Indication Bitmap includes multiples of an M-bit long Traffic Indication unit, the M-bit long Traffic Indication unit being added to the MOB_TRF-IND message when an SLPID Group Indication bit indicates that there is traffic for at least one MS among the M MSs mapped to the M SLPIDs included in an SLPID Group, the M-bit long Traffic Indication unit including M bits, each of the M bits corresponds to each of the M MSs mapped to the M SLPIDs included in the SLPID Group, each of the M bits indicating a negative indication that indicates that there is no traffic directed to a corresponding MS or a positive indication indicates that there is traffic directed to the corresponding MS, andwherein an SLPID of an MS is uniquely assigned by the BS when the MS is instructed to enter a sleep mode.
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Accused Products
Abstract
Disclosed are methods for transmitting/receiving a traffic indication message in a wireless communication system. In the wireless communication system, a base station (BS) groups a plurality of sleep mode IDs, and broadcasts a traffic indication message that includes first bitmap information indicating whether traffic corresponding to respective the sleep mode ID groups exists as well as second bitmap information indicating whether traffic indicators with respect to the respective sleep mode IDs that belong to the sleep mode ID groups exists. A mobile subscriber station (MS) which is allocated with any one of the plurality of sleep mode IDs, determines whether the traffic occurs in the sleep mode ID group to which the MS itself belongs using the first bitmap information if the MS receives the traffic indication message, and checks the traffic indicator of the terminal itself using the second bitmap information if the traffic occurs in the sleep mode ID group to which the MS belongs.
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Citations
32 Claims
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1. A system for transmitting a traffic indication (MOB_TRF-IND) message in a Broadband Wireless Access communication system, comprising:
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a Base Station (BS) for transmitting the MOB_TRF-IND message including a sleep mode ID (SLPID) Group Indication Bitmap and a Traffic Indication Bitmap, wherein the SLPID Group Indication Bitmap includes N SLPID Group Indication bits, each of the N SLPID Group Indication bits corresponding to each of N SLPID groups, and the N SLPID groups are generated by grouping N*M SLPIDs, wherein each of the N SLPID Group Indication bits indicates that there is no traffic for M Mobile Stations (MSs) mapped to M SLPIDs included in a corresponding SLPID group or that there is traffic for at least one of the M MSs mapped to the M SLPIDs included in the corresponding SLPID group, wherein the Traffic Indication Bitmap includes multiples of an M-bit long Traffic Indication unit, the M-bit long Traffic Indication unit being added to the MOB_TRF-IND message when an SLPID Group Indication bit indicates that there is traffic for at least one MS among the M MSs mapped to the M SLPIDs included in an SLPID Group, the M-bit long Traffic Indication unit including M bits, each of the M bits corresponds to each of the M MSs mapped to the M SLPIDs included in the SLPID Group, each of the M bits indicating a negative indication that indicates that there is no traffic directed to a corresponding MS or a positive indication indicates that there is traffic directed to the corresponding MS, and wherein an SLPID of an MS is uniquely assigned by the BS when the MS is instructed to enter a sleep mode. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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2. A system for receiving a traffic indication (MOB_TRF-IND) message in a Broadband Wireless Access communication system, comprising:
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a Mobile Station (MS) for being allocated with one of N*M sleep mode IDs (SLPIDs), included in one of N SLPID groups, and receiving the MOB_TRF-IND message including an SLPID Group Indication Bitmap and a Traffic Indication Bitmap, wherein the SLPID Group Indication Bitmap includes N SLPID Group Indication bits, each of the N SLPID Group Indication bits corresponding to each of the N SLPID groups, wherein each of the N SLPID Group Indication bits indicates that there is no traffic for M MSs mapped to M SLPIDs included in a corresponding SLPID group or that there is traffic for at least one of the M MSs mapped to the M SLPIDs included in the corresponding SLPID group, wherein the Traffic Indication Bitmap includes multiples of an M-bit long Traffic Indication unit, the M-bit long Traffic Indication unit being added to the MOB_TRF-IND message when an SLPID Group Indication bit indicates that there is traffic for at least one MS among the M MSs mapped to the M SLPIDs included in an SLPID group, the M-bit long Traffic Indication unit including M bits, each of the M bits corresponding to each of the M MSs mapped to the M SLPIDs included in the SLPID Group, each of the M bits indicating a negative indication that indicates that there is no traffic directed to a corresponding MS or a positive indication indicates that there is traffic directed to the corresponding MS, wherein the N SLPID groups are generated by grouping the N*M SLPIDs by a Base Station (BS), and wherein an SLPID of an MS is uniquely assigned by the BS when the MS is instructed to enter a sleep mode. - View Dependent Claims (3, 4, 15, 16, 17, 18, 19, 20)
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5. A method for transmitting a traffic indication (MOB_TRF-IND) message by a Base Station (BS) in a Broadband Wireless Access communication system, the method comprising:
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transmitting the MOB_TRF-IND message including a sleep mode ID (SLPID) Group Indication Bitmap and a Traffic Indication Bitmap, wherein the SLPID Group Indication Bitmap includes N SLPID Group Indication bits, each of the N SLPID Group Indication bits corresponding to each of N SLPID groups, and the N SLPID groups are generated by grouping N*M SLPIDs, wherein each of the N SLPID Group Indication bits indicates that there is no traffic for M Mobile Stations (MSs) mapped to M SLPIDs included in a corresponding SLPID group or that there is traffic for at least one of the M MSs mapped to the M SLPIDs included in the corresponding SLPID group, wherein the Traffic Indication Bitmap includes multiples of an M-bit long Traffic Indication unit, the M-bit long Traffic Indication unit being added to the MOB_TRF-IND message when an SLPID Group Indication bit indicates that there is traffic for at least one MS among the M MSs mapped to the M SLPIDs included in an SLPID Group, the M-bit long Traffic Indication unit including M bits, each of the M bits corresponding to each of the M MSs mapped to the M SLPIDs included in the SLPID Group, each of the M bits indicating a negative indication that indicates that there is no traffic directed to a corresponding MS or a positive indication that indicates that there is traffic directed to the corresponding MS, and wherein an SLPID of an MS is uniquely assigned by the BS when the MS is instructed to enter a sleep mode. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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6. A method for receiving a traffic indication (MOB_TRF-IND) message by a Mobile Station (MS) in a Broadband Wireless Access communication system, the method comprising:
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being allocated with one of N*M sleep mode IDs (SLPIDs), included in one of N SLPID groups; and receiving the MOB_TRF-IND message including an SLPID Group Indication Bitmap and a Traffic Indication Bitmap, wherein the SLPID Group Indication Bitmap includes N SLPID Group Indication bits, each of the N SLPID Group Indication bits corresponding to each of the N SLPID groups, wherein each of the N SLPID Group Indication bits indicates that there is no traffic for M MSs mapped to M SLPIDs included in a corresponding SLPID group or that there is traffic for at least one of the M MSs mapped to the M SLPIDs included in the corresponding SLPID group, wherein the Traffic Indication Bitmap includes multiples of an M-bit long Traffic Indication unit, the M-bit long Traffic Indication unit being added to the MOB_TRF-IND message when an SLPID Group Indication bit indicates that there is traffic for at least one MS among the M MSs mapped to the M SLPIDs included in an SLPID Group, the M-bit long Traffic Indication unit includes M bits, each of the M bits corresponding to each of the M MSs mapped to the M SLPIDs included in the SLPID Group, each of the M bits indicating a negative indication that indicates that there is no traffic directed to a corresponding MS or a positive indication that indicates that there is traffic directed to the corresponding MS, wherein the N SLPID groups are generated by grouping the N*M SLPIDs by a Base Station (BS), and wherein an SLPID of an MS is uniquely assigned by the BS when the MS is instructed to enter a sleep mode. - View Dependent Claims (7, 8, 27, 28, 29, 30, 31, 32)
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Specification