최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0588293 (2012-08-17) |
등록번호 | US-9301266 (2016-03-29) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 2 인용 특허 : 8 |
A system and method for wireless devices to efficiently receive communications by transmitting and receiving specialized beacon messages. Particularly, a wireless device may await reception of a synchronizing beacon message from a transmitting device. A relative position identifier within the synchr
A system and method for wireless devices to efficiently receive communications by transmitting and receiving specialized beacon messages. Particularly, a wireless device may await reception of a synchronizing beacon message from a transmitting device. A relative position identifier within the synchronizing beacon message may then allow the wireless device to anticipate future beacon message transmissions and to synchronize its reception pattern with the transmitter. In this manner the wireless device need only receive and decode beacon messages germane to its operation.
1. A method of communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting, from the access point to the access terminal, a repeating finite sequence of beacon messages, the sequence comprising a first beacon messag
1. A method of communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting, from the access point to the access terminal, a repeating finite sequence of beacon messages, the sequence comprising a first beacon message comprising a relative position identifier to indicate timing of subsequent beacon messages in the finite sequence and to identify content included in the subsequent beacon messages, wherein the subsequent beacon messages include information not included in the first beacon message;transmitting, from the access point to the access terminal, a time offset, an absolute time, and a sequence number to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number; anddecoding, at the access terminal, the first beacon message and a proper subset of the sequence of beacon messages based upon the relative position identifier, wherein the access terminal is in a low power state during transmission of a second subset of sequence of beacon messages, and the second subset of beacon messages comprises beacon messages not in the proper subset and does not include the first beacon message. 2. The method of claim 1, wherein the first beacon message includes information comprising network bandwidth for the base station subsystem. 3. The method of claim 1, wherein the first beacon message includes information indicating a second beacon message in the sequence has information comprising capabilities of the access point. 4. The method of claim 3, wherein the capabilities includes a number of antennas of the access point. 5. The method of claim 1, wherein the first beacon message includes a full beacon follows field indicating if the access point transmits a full beacon message immediately following in sequence the first beacon message. 6. The method of claim 1, further comprising: decoding, by the access terminal, a second beacon message providing the absolute time; anddecoding, by the access terminal, a third beacon message subsequent to the second beacon message, wherein the third beacon message comprises the sequence number relative to the first beacon message and the time offset, and the time offset indicates a time difference between when the third beacon message was scheduled to be transmitted by the access point and when the third beacon message was transmitted. 7. The method of claim 6, wherein the second beacon message comprises a physical layer preamble having a length field comprised of all zeros. 8. The method of claim 1, wherein the repeating sequence of beacon messages has a short beacon interval and a beacon interval that is an integer multiple of the short beacon interval. 9. The method of claim 1, wherein the base system substation has a Basic Service Set Identification (BSSID), and the first beacon message has information comprising a compressed value of the BSSID. 10. The method of claim 9, wherein the compressed BSSID value is a cyclic redundancy check of the BSSID. 11. The method of claim 1, wherein the first beacon message has a four-byte timestamp comprised of the four least significant bytes of the access point timestamp. 12. The method of claim 1, wherein the first beacon message comprises a one byte change sequence field, and the method further comprises increasing, by the access point, the value of the change sequence field to indicate a change in network information. 13. The method of claim 1, wherein the first beacon message comprises a frame control field including a three-bit bandwidth field. 14. A method of communicating in a base station subsystem comprising an access point and an access terminal, wherein the base station subsystem is identified by a Basic Service Set Identification (BSSID), the method comprising: transmitting beacon messages from the access point to the access terminal, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;transmitting, from the access point to the access terminal, a time offset, an absolute time, and a sequence number to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number;transmitting beacon messages of the short beacon message type at a first time interval; andtransmitting full beacon messages of the full beacon message type at a second time interval equal to an integer multiple of the first time interval,wherein each beacon message of the short beacon message type includes a compressed BSSID field having a value indicative of a cyclic redundancy check of the BSSID. 15. The method of claim 14, wherein the access point provides a timestamp, and each beacon message of the short beacon message type includes a four-byte timestamp comprised of the four least significant bytes of the access point timestamp. 16. The method of claim 14, wherein each beacon message of the short beacon message type includes a one-byte change sequence field having a value, and the method further comprises: incrementing the value of the change sequence field in the beacon message of the short beacon message type to indicate a change in information regarding the base station subsystem. 17. The method of claim 14, wherein each beacon message of the short beacon message type includes a full beacon follows field indicating if an immediately subsequent beacon message is of the full beacon message type. 18. The method of claim 17, wherein the access point provides a timestamp, and the time of a next beacon message indicated in the full beacon follows field is the higher three bytes of the four least significant bytes of the value of the timestamp when the next beacon message of the full beacon message type is scheduled for transmission. 19. The method of claim 14, wherein each beacon message of the short beacon message type includes a frame control field including a three-bit bandwidth field. 20. A method of communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the method comprising: decoding, by the access terminal, a first beacon message providing an absolute time;decoding, by the access terminal, a second beacon message subsequent to the first beacon message, wherein the second beacon message comprises a sequence number relative to the first beacon message and a time offset indicating a time difference between when the second beacon message was scheduled to be transmitted by the access point and when the second beacon message actually was transmitted; andtransitioning the access terminal from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 21. A method of communicating a set of information elements in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting beacon messages from the access point to the access terminal, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type, and each beacon message of the full beacon message type comprises the set of information elements;transmitting a plurality of beacon messages of the short beacon message type, wherein each beacon message in the plurality of beacon messages comprises a proper subset of the set of information elements, and the plurality of beacon messages comprises the set of information elements; andtransmitting a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 22. The method of claim 21, wherein the set of information elements comprise network information about the base station subsystem. 23. A method of communicating in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting beacon messages from the access point to the access terminal, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;transmitting a first beacon message comprising content information specifying information included in beacon messages of the short beacon message type transmitted subsequently to the first beacon message; andtransmitting a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 24. The method of claim 23, further comprising: transmitting a plurality of beacon messages of the short beacon message type subsequent to the first beacon message, wherein each beacon message in the plurality of beacon messages comprises information according to the content information; andchanging, based upon the content information, a power state of the access terminal into the low power state for a portion of the plurality of beacon messages of the short beacon message type. 25. The method of claim 23, wherein the first beacon message is of the short beacon message type. 26. A method of communicating in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting beacon messages from the access point to the access terminal, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;transmitting a plurality of beacon messages of the short beacon message type, wherein each beacon message in the plurality of beacon messages comprises a physical layer preamble comprising a signal field including a length field; anddecoding, at the access terminal, the plurality of beacon messages as synchronization beacon messages, provided the length field of the beacon messages is set to all zeroes. 27. The method of claim 26, wherein each beacon message decoded as a synchronization beacon message comprises a subsequent relative position field indicating the sequence position of the synchronizing beacon with respect to the first beacon message in a sequence of beacon messages. 28. The method of claim 27, wherein each beacon message decoded as a synchronization beacon message comprises a subsequent offset field indicating the offset time at which the synchronizing beacon is transmitted with respect to the time the synchronizing beacon was expected to be transmitted. 29. A system for communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the system comprising: the access point comprising a transmitter configured to transmit a repeating finite sequence of beacon messages, wherein the sequence comprises a first beacon message including a relative position identifier indicating timing of subsequent beacon messages in the finite sequence and configured to identify content included in the subsequent beacon messages, and the subsequent beacon messages include information not included in the first beacon message; andthe access terminal comprising: a decoding module configured to decode, based upon the relative position identifier, the first beacon message and a proper subset of the sequence of beacon messages; anda processor configured to change a state of the access terminal to a low power state when the transmitter of the access point transmits a second subset of sequence of beacon messages, wherein the second subset of beacon messages comprises beacon messages not in the proper subset and does not include the first beacon message, and are configured to transition the access terminal from the low power state to a high power state at a time determined from a time offset, an absolute time, and a sequence number. 30. The system of claim 29, wherein the first beacon message includes information comprising network bandwidth for the base station subsystem. 31. The system of claim 29, wherein the first beacon message includes information indicating a second beacon message in the sequence has information comprising capabilities of the access point. 32. The system of claim 31, wherein the capabilities include a number of antennas of the access point. 33. The system of claim 29, wherein the first beacon message includes a full beacon follows field indicating if the access point transmits a full beacon message immediately following the first beacon message. 34. The system of claim 29, wherein the decoding module is configured to: decode a second beacon message providing the absolute time; anddecode a third beacon message subsequent to the second beacon message, wherein the third beacon message comprises the sequence number relative to the first beacon message and the time offset, and the time offset indicates a time difference between when the third beacon message was scheduled to be transmitted by the access point and when the third beacon message was transmitted. 35. The system of claim 34, wherein the second beacon message comprises a physical layer preamble having a length field comprised of all zeros. 36. The system of claim 29, wherein the repeating sequence of beacon messages has a short beacon interval and a beacon interval that is an integer multiple of the short beacon interval. 37. The system of claim 29, comprising a base system substation comprising the access point and having a Basic Service Set Identification (BSSID), wherein the first beacon message includes information comprising a compressed value of the BSSID. 38. The system of claim 37, wherein the compressed BSSID value is a cyclic redundancy check of the BSSID. 39. The system of claim 29, wherein the first beacon message has a four-byte timestamp comprised of the four least significant bytes of the access point timestamp. 40. The system of claim 29, wherein the first beacon message comprises a one byte change sequence field, and the access point is configured to increase the value of the change sequence field to indicate a change in network information. 41. The system of claim 29, wherein the first beacon message comprises a frame control field including a three-bit bandwidth field. 42. An access point identified by a Basic Service Set Identification (BSSID), the access point comprising: a transmitter configured to transmit beacon messages, wherein: each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;the transmitter is configured to: transmit beacon messages of the short beacon message type at a first time interval,transmit full beacon messages of the full beacon message type at a second time interval, the second time interval equal to an integer multiple of the first time interval, andtransmit a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number; andeach beacon message of the short beacon message type includes a compressed BSSID field having a value indicative of a cyclic redundancy check of the BSSID. 43. The access point of claim 42, wherein the access point is configure to provide a timestamp, and each beacon message of the short beacon message type includes a four-byte timestamp comprised of the four least significant bytes of the access point timestamp. 44. The access point of claim 42, wherein each beacon message of the short beacon message type includes a one-byte change sequence field having a value, and the access point is configured to increment the value of the change sequence field in a beacon message of the short beacon message type indicating a change in information regarding the base station subsystem. 45. The access point of claim 42, wherein each beacon message of the short beacon message type includes a full beacon follows field indicating if an immediately subsequent beacon message is of the full beacon message type. 46. The access point of claim 45, wherein the access point is configured to provide a timestamp, and the time of a next beacon message indicated in the full beacon follows field is the higher three bytes of the four least significant bytes of the value of the timestamp when the next beacon message of the full beacon message type is scheduled for transmission. 47. The access point of claim 42, wherein each beacon message of the short beacon message type includes a frame control field including a three-bit bandwidth field. 48. An access terminal configured to receive beacon messages in a base station subsystem, the access terminal comprising: a decoding module configured to: decode a first beacon message providing an absolute time;decode a second beacon message subsequent to the first beacon message, wherein the second beacon message comprises a sequence number relative to the first beacon message and a time offset, and the time offset indicates a time difference between when the second beacon message was scheduled to be transmitted and when the second beacon message actually was transmitted; andtransition the access terminal from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 49. An access point configured to communicate a set of information elements in a base station subsystem, the access point comprising: a transmitter configured to: transmit beacon messages, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type, and each beacon message of the full beacon message type comprises the set of information elements;transmit a plurality of beacon messages of the short beacon message type, wherein each beacon message in the plurality of beacon messages comprises a proper subset of the set of information elements, and the plurality of beacon messages comprises the set of information elements; andtransmit a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 50. The access point of claim 49, wherein the set of information elements comprise network information about the base station subsystem. 51. A system comprising an access point, the access point comprising a transmitter configured to: transmit beacon messages, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;transmit a first beacon message comprising content information specifying information included in beacon messages of the short beacon message type transmitted subsequently to the first beacon message; andtransmit a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 52. The system of claim 51, wherein: the transmitter is further configured to transmit a plurality of beacon messages of the short beacon message type subsequent to the first beacon message;each beacon message in the plurality of beacon messages comprises information according to the content information; andthe system further comprises an access terminal comprising a processor configured to change, based upon the content information, a power state of the access terminal into the low power state for a portion of the plurality of beacon messages of the short beacon message type. 53. The system of claim 51, wherein the first beacon message is of the short beacon message type. 54. An access terminal configured to receive beacon messages for a base station subsystem, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type, the access terminal comprising: a receiver configured to receive a plurality of beacon messages of the short beacon message type, wherein each beacon message in the plurality of beacon messages comprises a physical layer preamble comprising a signal field comprising a length field; anda decoding module configured to decode the plurality of beacon messages, wherein the beacon messages in the plurality of beacon messages are decoded as synchronization beacon messages, provided the length field of the beacon messages is set to all zeroes. 55. The access terminal of claim 54, wherein each beacon message decoded as a synchronization beacon messages comprises a subsequent relative position field indicating the sequence position of the synchronizing beacon with respect to the first beacon message in a sequence of beacon messages. 56. The access terminal of claim 55, wherein each beacon message decoded as a synchronization beacon message comprises a subsequent offset field indicating the offset time at which the synchronizing beacon is transmitted with respect to the time the synchronizing beacon was expected to be transmitted. 57. A system for communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the system comprising: the access point comprising a means for transmitting that is configured to: transmit a repeating finite sequence of beacon messages, wherein the sequence a first beacon message comprising a relative position identifier to indicate timing of subsequent beacon messages in the finite sequence,identify content included in the subsequent beacon messages, wherein the subsequent beacon messages includes information not included in the first beacon message, andtransmit a time offset, an absolute time, and a sequence number to an access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number,wherein the access terminal comprises:a means for decoding configured to decode the first beacon message and a proper subset of the sequence of beacon messages based upon the relative position identifier; anda means for processing configured to change the state of the access terminal to a low power state when the means for transmitting of the access point transmits a second subset of sequence of beacon messages, wherein the second subset of beacon messages comprises beacon messages not in the proper subset and does not include the first beacon message. 58. The system of claim 57, wherein the first beacon message includes information comprising network bandwidth for the base station subsystem. 59. The system of claim 57, wherein the first beacon message includes information indicating a second beacon message in the sequence has information comprising capabilities of the access point. 60. The system of claim 59, wherein the capabilities include the number of antennas of the access point. 61. The system of claim 57, wherein the first beacon message includes a full beacon follows field indicating if the access point transmits a full beacon message immediately following in sequence the first beacon message. 62. The system of claim 57, wherein the means for decoding is configured to: decode a second beacon message providing the absolute time; anddecode a third beacon message subsequent to the second beacon message, wherein the third beacon message comprises the sequence number relative to the first beacon message and the time offset, and the time offset indicates a time difference between when the third beacon message was scheduled to be transmitted by the access point and when the third beacon message was transmitted. 63. The system of claim 62, wherein the second beacon message comprises a physical layer preamble having a length field comprised of all zeros. 64. The system of claim 57, wherein the repeating sequence of beacon messages has a short beacon interval and a beacon interval, and the beacon interval is an integer multiple of the short beacon interval. 65. The system of claim 57, further comprising a base system substation including the access point and having a Basic Service Set Identification (BSSID), wherein the first beacon message includes information comprising a compressed value of the BSSID. 66. The system of claim 65, wherein the compressed BSSID value is a cyclic redundancy check of the BSSID. 67. The system of claim 57, wherein the first beacon message includes a four-byte timestamp comprised of the four least significant bytes of the access point timestamp. 68. The system of claim 57, wherein first beacon message comprises a one byte change sequence field, and the access point is configured to increase the value of the change sequence field to indicate a change in network information. 69. The system of claim 57, wherein the first beacon message a frame control field including a three-bit bandwidth field. 70. An access point identified by a Basic Service Set Identification (BSSID), the access point comprising: a means for transmitting beacon messages, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type, and the means for transmitting is configured to transmit beacon messages of the short beacon message type at a first time interval;a means for transmitting full beacon messages of the full beacon message type at a second time interval equal to an integer multiple of the first time interval;wherein each beacon message of the short beacon message type includes a compressed BSSID field having a value indicating a cyclic redundancy check of the BSSID; anda means for transmitting a time offset, an absolute time, and a sequence number to an access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 71. The access point of claim 70, wherein the access point is configured to provide a timestamp, and each beacon message of the short beacon message type includes a four-byte timestamp comprised of the four least significant bytes of the access point timestamp. 72. The access point of claim 70, wherein each beacon message of the short beacon message type includes a one-byte change sequence field having a value, and the access point is configured to increment the value of the change sequence field in a beacon message of the short beacon message type to indicate a change in information regarding the base station subsystem. 73. The access point of claim 70, wherein each beacon message of the short beacon message type includes a full beacon follows field indicating if an immediately subsequent beacon message is of the full beacon message type. 74. The access point of claim 73, wherein the access point is configured to provide a timestamp, and the time of a next beacon message indicated in the full beacon follows field is the higher three bytes of the four least significant bytes of the value of the timestamp when the next beacon message of the full beacon message type is scheduled for transmission. 75. The access point of claim 70, wherein each beacon message of the short beacon message type includes a frame control field including a three-bit bandwidth field. 76. An access terminal to receive beacon messages in a base station subsystem, the access terminal comprising: a means for decoding configured to: decode a first beacon message providing an absolute time,decode a second beacon message subsequent to the first beacon message, wherein the second beacon message comprises a sequence number relative to the first beacon message and a time offset, and the time offset indicates a time difference between when the second beacon message was scheduled to be transmitted and when the second beacon message was transmitted; andmeans for transitioning the access terminal from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 77. An access point to communicate a set of information elements in a base station subsystem, the access point comprising: a means for transmitting beacon messages, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type, and each beacon message of the full beacon message type comprises the set of information elements;a means for transmitting a plurality of beacon messages of the short beacon message type, wherein each beacon message in the plurality of beacon messages comprising a proper subset of the set of information elements, and the plurality of beacon messages comprises the set of information elements; anda means for transmitting a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 78. The access point of claim 77, wherein the set of information elements comprise network information about the base station subsystem. 79. A system comprising an access point, the access point comprising: a means for transmitting beacon messages, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;a means for transmitting a first beacon message comprising content information specifying information included in beacon messages of the short beacon message type transmitted subsequently to the first beacon message; anda means for transmitting a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 80. The system of claim 79, wherein the means for transmitting beacon messages is configured to transmit beacon messages of the short beacon message type subsequent to the first beacon message, wherein each beacon message in the plurality of beacon messages comprises information according to the content information; and the system further comprises an access terminal comprising a means for changing, based upon the content information, a power state of the access terminal into the low power state for a portion of the plurality of beacon messages of the short beacon message type. 81. The system of claim 79, wherein the first beacon message is of the short beacon message type. 82. An access terminal configured to receive beacon messages for a base station subsystem, based upon the content information each beacon message is an instance of a full beacon message type or an instance of a short beacon message type, the access terminal comprising: a means for receiving a plurality of beacon messages of the short beacon message type, wherein each beacon message in the plurality of beacon messages comprising a physical layer preamble comprising a signal field including a length field; anda means for decoding the plurality of beacon messages, wherein the beacon messages in the plurality of beacon messages are decoded as synchronization beacon messages, provided the length field of the beacon messages is set to all zeroes. 83. The access terminal of claim 82, wherein each beacon message decoded as a synchronization beacon messages comprises a subsequent relative position field indicating the sequence position of the synchronizing beacon with respect to the first beacon message in a sequence of beacon messages. 84. The access terminal of claim 83, wherein each beacon message decoded as a synchronization beacon message comprises a subsequent offset field indicating the offset time at which the synchronizing beacon is transmitted with respect to the time the synchronizing beacon was expected to be transmitted. 85. A non-transitory computer readable storage medium comprising processor-executable instructions stored thereon configured to cause a processor to execute a method for communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting, from the access point to the access terminal, a repeating finite sequence of beacon messages, wherein the sequence comprises a first beacon message comprising a relative position identifier indicating timing of subsequent beacon messages in the finite sequence and identifying content included in the subsequent beacon messages, and the subsequent beacon messages include information not included in the first beacon message;transmitting, from the access point to the access terminal, a time offset, an absolute time, and a sequence number to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number; anddecoding, at the access terminal, the first beacon message and a proper subset of the sequence of beacon messages based upon the relative position identifier, wherein the access terminal is in a low power state during transmission of a second subset of sequence of beacon messages, and the second subset of beacon messages comprises beacon messages not in the proper subset and does not include the first beacon message. 86. The non-transitory computer readable storage medium of claim 85, wherein the first beacon message includes information comprising network bandwidth for the base station subsystem. 87. The non-transitory computer readable storage medium of claim 85, wherein the first beacon message includes information indicating a second beacon message in the sequence has information comprising capabilities of the access point. 88. The non-transitory computer readable storage medium of claim 87, wherein the capabilities includes the number of antennas of the access point. 89. The non-transitory computer readable storage medium of claim 85, wherein the first beacon message includes a full beacon follows field indicating if the access point transmits a full beacon message immediately following in sequence the first beacon message. 90. The non-transitory computer readable storage medium of claim 85, the method further comprising: decoding, by the access terminal, a second beacon message providing the absolute time; anddecoding, by the access terminal, a third beacon message subsequent to the second beacon message, wherein the third beacon message comprises the sequence number relative to the first beacon message and the time offset, and the time offset indicates a time difference between when the third beacon message was scheduled to be transmitted by the access point and when the third beacon message was transmitted. 91. The non-transitory computer readable storage medium of claim 90, wherein the second beacon message comprises a physical layer preamble having a length field comprised of all zeros. 92. The non-transitory computer readable storage medium of claim 85, wherein the repeating sequence of beacon messages has a short beacon interval and a beacon interval that is an integer multiple of the short beacon interval. 93. The non-transitory computer readable storage medium of claim 85, wherein the base system substation has a Basic Service Set Identification (BSSID), and the first beacon message has information comprising a compressed value of the BSSID. 94. The non-transitory computer readable storage medium of claim 93, wherein the compressed BSSID value is a cyclic redundancy check of the BSSID. 95. The non-transitory computer readable storage medium of claim 85, wherein the first beacon message has a four-byte timestamp comprised of the four least significant bytes of the access point timestamp. 96. The non-transitory computer readable storage medium of claim 85, wherein the first beacon message comprises a one byte change sequence field, and the method further comprises increasing the value of the change sequence field to indicate a change in network information. 97. The non-transitory computer readable storage medium of claim 85, wherein the first beacon message comprises a frame control field, and the frame control field includes a three-bit bandwidth field. 98. A non-transitory computer readable storage medium comprising processor-executable instructions stored thereon configured to cause a processor to execute a method for communicating beacon messages in a base station subsystem comprising an access point and an access terminal, wherein the base station subsystem is identified by a Basic Service Set Identification (BSSID), the method comprising: transmitting beacon messages from the access point to the access terminal, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;transmitting, from the access point to the access terminal, a time offset, an absolute time, and a sequence number to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number; andtransmitting beacon messages of the short beacon message type at a first time interval, and transmitting full beacon messages of the full beacon message type at a second time interval, wherein the second time interval is equal to an integer multiple of the first time interval, and each beacon message of the short beacon message type includes a compressed BSSID field having a value indicative of a cyclic redundancy check of the BSSID. 99. The non-transitory computer readable storage medium of claim 98, wherein each beacon message of the short beacon message type includes a four-byte timestamp comprised of the four least significant bytes of the access point timestamp. 100. The non-transitory computer readable storage medium of claim 98, wherein each beacon message of the short beacon message type includes a one-byte change sequence field having a value, and the method further comprises incrementing the value of the change sequence field in a beacon message of the short beacon message type to indicate a change in information regarding the base station subsystem. 101. The non-transitory computer readable storage medium of claim 98, wherein each beacon message of the short beacon message type includes a full beacon follows field indicating if an immediately subsequent beacon message is of the full beacon message type. 102. The non-transitory computer readable storage medium of claim 101, wherein the access point provides a timestamp, and the time of a next beacon message indicated in the full beacon follows field is the higher three bytes of the four least significant bytes of the value of the timestamp when the next beacon message of the full beacon message type is scheduled for transmission. 103. The non-transitory computer readable storage medium of claim 98, wherein each beacon message of the short beacon message type includes a frame control field including a three-bit bandwidth field. 104. A non-transitory computer readable storage medium comprising processor-executable instructions stored thereon configured to cause a processor to execute a method for communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the method comprising: decoding, by the access terminal, a first beacon message providing an absolute time;decoding, by the access terminal, a second beacon message subsequent to the first beacon message, wherein the second beacon message comprises a sequence number relative to the first beacon message and a time offset, and the time offset indicates a time difference between when the second beacon message was scheduled to be transmitted by the access point and when the second beacon message was transmitted; andtransitioning the access terminal from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 105. A non-transitory computer readable storage medium having instructions stored thereon to perform a method when executed by at least one processor, the method for communicating a set of information elements in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting beacon messages from the access point to the access terminal, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type, wherein each beacon message of the full beacon message type comprises the set of information elements;transmitting a plurality of beacon messages of the short beacon message type, wherein each beacon message in the plurality of beacon messages comprises a proper subset of the set of information elements, and the plurality of beacon messages comprises the set of information elements; andtransmitting a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 106. The non-transitory computer readable storage medium of claim 105, wherein the set of information elements comprises network information about the base station subsystem. 107. A non-transitory computer readable storage medium comprising processor-executable instructions stored thereon configured to cause a processor to execute a method for communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting beacon messages from the access point to the access terminal, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;transmitting a first beacon message comprising content information specifying information included in beacon messages of the short beacon message type transmitted subsequently to the first beacon message; andtransmitting a time offset, an absolute time, and a sequence number to the access terminal to enable the access terminal to transition from a low power state to a high power state at a time determined from the time offset, the absolute time, and the sequence number. 108. The non-transitory computer readable storage medium of claim 107, the method further comprising: transmitting a plurality of beacon messages of the short beacon message type subsequent to the first beacon message, wherein each beacon message in the plurality of beacon messages comprises information according to the content information; andchanging, based upon the content information, a power state of the access terminal into the low power state for a portion of the plurality of beacon messages of the short beacon message type. 109. The non-transitory computer readable storage medium of claim 107, wherein the first beacon message is of the short beacon message type. 110. A non-transitory computer readable storage medium comprising processor-executable instructions stored thereon configured to cause a processor to execute a method for communicating beacon messages in a base station subsystem comprising an access point and an access terminal, the method comprising: transmitting beacon messages from the access point to the access terminal, wherein each beacon message is an instance of a full beacon message type or an instance of a short beacon message type;transmitting a plurality of beacon messages of the short beacon message type, wherein each beacon message in the plurality of beacon messages comprises a physical layer preamble comprising a signal field including a length field; anddecoding, at the access terminal, the plurality of beacon messages, wherein the beacon messages in the plurality of beacon messages are decoded as synchronization beacon messages, provided the length field of the beacon messages is set to all zeroes. 111. The non-transitory computer readable storage medium of claim 110, wherein each beacon message decoded as a synchronization beacon messages comprises a subsequent relative position field indicating the sequence position of the synchronizing beacon with respect to the first beacon message in a sequence of beacon messages. 112. The non-transitory computer readable storage medium of claim 111, wherein each beacon message decoded as a synchronization beacon message comprises a subsequent offset field indicating the offset time at which the synchronizing beacon is transmitted with respect to the time the synchronizing beacon was expected to be transmitted.
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