SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING A TRAFFIC INDICATION MESSAGE IN A BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM

• US 20090232081A1
• Filed: 05/26/2009
• Published: 09/17/2009
• Est. Priority Date: 11/07/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: SON, Yeong-Moon, Koo, Chang-Hoi, Lee, Sung-Jin, Kim, So-Hyun, Kang, Hyun-Jeong, Son, Jung-Je
• Granted Patent: US 7,848,273 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 68/025 Indirect paging
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system and method for transmitting a traffic indication message in a Broadband Wireless Access communication system. A base station (BS) transmits the traffic indication message to mobile subscriber stations (MSSs). The traffic indication message includes information on a number of MSS groups and information on a number of traffic indication indexes, each of the MSS groups includes a predetermined number of MSSs, and each of the traffic indication indexes is assigned to each of the MSS groups, and includes a bitmap including a predetermined number of bits. The predetermined number of bits is identical to the number of the MSSs included in each of the MSS groups, each of the predetermined number of the bits is assigned to each of the MSSs included in each of the MSS groups, and represents operation instruction information for each of the MSSs.

Claims

1. A system for transmitting a traffic indication message in a Broadband Wireless Access communication system, the system comprising:

a base station (BS) for transmitting the traffic indication message to mobile subscriber stations (MSSs),

wherein the traffic indication message includes traffic indication indexes and a number of MSS groups, a number of the traffic indication indexes being identical to the number of the MSS groups,

each of the MSS groups includes a predetermined number of MSSs,

each of the traffic indication indexes is assigned to each of the MSS groups, and includes a bitmap including a predetermined number of bits,

the predetermined number of bits is identical to the number of the MSSs included in each of the MSS groups,

each of the predetermined number of the bits is assigned to each of the MSSs included in each of the MSS groups, and represents operation instruction information for each of the MSSs, and

wherein at least one of the predetermined number of bits indicates that a corresponding MSS immediately state transitions to a sleep mode, without waiting for reception of a next traffic indication message for a listening interval.

2. The system of claim 1, wherein the operation instruction information comprises information on an operation that a corresponding MSS performs in the listening interval.

3. The system of claim 2, wherein at least one of the predetermined number of bits further indicates one of that a corresponding MSS maintains the sleep mode, after expiration of the listening interval, and that the corresponding MSS state transitions to an awake mode.

4. A system for receiving a traffic indication message in a Broadband Wireless Access communication system, the system comprising:

a mobile subscriber station (MSS) for receiving the traffic indication message from a base station (BS),

wherein the traffic indication message includes traffic indication indexes and a number of MSS groups, a number of the traffic indication indexes being identical to the number of the MSS groups,

each of the MSS groups includes a predetermined number of MSSs,

each of the traffic indication indexes is assigned to each of the MSS groups, and includes a bitmap including a predetermined number of bits,

the predetermined number of bits is identical to the number of the MSSs included in each of the MSS groups,

each of the predetermined number of bits is assigned to each of the MSSs included in each of the MSS groups and represents operation instruction information for each of the MSSs, and

wherein at least one of the predetermined number of bits indicates that a corresponding MSS immediately state transitions to a sleep mode, without waiting for reception of a next traffic indication message for a listening interval.

5. The system of claim 4, wherein the operation instruction information comprises information on an operation that a corresponding MSS performs during the listening interval.

6. The system of claim 5, wherein at least one of the predetermined number of bits further indicates one of that a corresponding MSS maintains the sleep mode, after expiration of the listening interval, and that the corresponding MSS state transitions to an awake mode.

7. A method for transmitting a traffic indication message by a base station (BS) in a Broadband Wireless Access communication system, the method comprising:

transmitting the traffic indication message to mobile subscriber stations (MSSs),

wherein the traffic indication message includes traffic indication indexes and a number of MSS groups, a number of the traffic indication indexes being identical to the number of the MSS groups,

each of the MSS groups includes a predetermined number of MSSs,

each of the traffic indication indexes is assigned to each of the MSS groups, and includes a bitmap including a predetermined number of bits,

the predetermined number of bits is identical to the number of the MSSs included in each of the MSS groups,

each of the predetermined number of bits is assigned to each of the MSSs included in each of the MSS groups and represents operation instruction information for each of the MSSs, and

wherein at least one of the predetermined number of bits indicates that a corresponding MSS immediately state transitions to a sleep mode, without waiting for reception of a next traffic indication message for a listening interval.

8. The method of claim 7, wherein the operation instruction information includes information on an operation that a corresponding MSS performs during the listening interval.

9. The method of claim 8, wherein at least one of the predetermined number of bits further indicates one of that a corresponding MSS maintains the sleep mode, after expiration of the listening interval, and that the corresponding MSS state transitions to an awake mode.

10. A method for receiving a traffic indication message by a mobile subscriber station (MSS) in a Broadband Wireless Access communication system, the method comprising:

receiving the traffic indication message from a base station (BS),

wherein the traffic indication message includes traffic indication indexes and a number of MSS groups, a number of the traffic indication indexes being identical to the number of the MSS groups,

each of the MSS groups includes a predetermined number of MSSs,

each of the traffic indication indexes is assigned to each of the MSS groups, and includes a bitmap including a predetermined number of bits,

the predetermined number of bits is identical to the number of the MSSs included in each of the MSS groups,

each of the predetermined number of bits is assigned to each of the MSSs included in each of the MSS groups and represents operation instruction information for each of the MSSs, and

wherein at least one of the predetermined number of bits indicates that a corresponding MSS immediately state transitions to a sleep mode, without waiting for reception of a next traffic indication message for a listening interval.

11. The method of claim 10, wherein the operation instruction information includes information on an operation that a corresponding MSS performs in the listening interval.

12. The method of claim 11, wherein at least one of the predetermined number of bits further indicates one of that a corresponding MSS maintains the sleep mode, after expiration of the listening interval, and that the corresponding MSS state transitions to an awake mode.