MONITOR PERIOD FOR ASYNCHRONOUS WIRELESS COMMUNICATION

US 20080031223A1
Filed: 08/03/2007
Published: 02/07/2008
Est. Priority Date: 08/07/2006
Status: Active Grant

First Claim

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1. A method of wireless communication, comprising:

transmitting data, by a first wireless node, during a scheduled transmit time period; and

monitoring for control information during a defined period of time after the scheduled transmit time period;

wherein transmission of the control information is scheduled based on the scheduled transmit time period.

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Abstract

A monitoring period is defined after a scheduled transmission period to enable a transmitting node to acquire control information that may otherwise have been transmitted during the scheduled transmission period. In some implementations the scheduled transmission may be divided up into several segments so that a transmitting node may receive and transmit control messages between segments. In some implementations wireless media access control supports asynchronous communication and overlapping transmissions. Here, a wireless node may determine whether to request or schedule a transmission based on control messages it receives from neighboring nodes. In some implementations data and control information are transmitted over different frequency division multiplexed channels to enable concurrent transmission of the data and control information.

Citations

114 Claims

1. A method of wireless communication, comprising:
- transmitting data, by a first wireless node, during a scheduled transmit time period; and
  
  monitoring for control information during a defined period of time after the scheduled transmit time period;
  
  wherein transmission of the control information is scheduled based on the scheduled transmit time period.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- - 2. The method of claim 1, wherein the control information comprises information that was previously transmitted by a second wireless node during the scheduled transmit time period.
  - 3. The method of claim 1, further comprising:
    - defining, based on the control information, a transmit constraints state that is used to issue a request to transmit.
  - 4. The method of claim 3, further comprising:
    - determining, based on the transmit constraints state, whether transmission by the first wireless node would interfere with reception at a second wireless node during another scheduled transmit time period.
  - 5. The method of claim 3, wherein the transmit constraints state comprises at least one of the group consisting of:
    - transmission start time, transmission end time, transmission time period, receive margin, and a received signal strength indication associated with a grant message or an acknowledgement message.
  - 6. The method of claim 3, further comprising:
    - determining, based on the transmit constraints state, whether to abstain from sending a request to transmit, delay sending of a request to transmit, request to transmit at a later time, adjust a transmit time period, or request to transmit at a reduced power level.
  - 7. The method of claim 1, further comprising:
    - defining, based on the control information, a rate prediction state that is used to schedule a requested data transmission.
  - 8. The method of claim 7, further comprising:
    - scheduling the requested data transmission if the rate prediction state indicates that the first wireless node will be able to receive data in a sustainable manner during a scheduled data transmission, taking into consideration potential transmissions by other wireless nodes.
  - 9. The method of claim number 7, wherein the rate prediction state comprises at least one of the group consisting of:
    - transmission start time, transmission end time, transmission time period, transmit power delta, and a received signal strength indication associated with a confirmation message.
  - 10. The method of claim 7, further comprising:
    - determining, based on the rate prediction state, whether to abstain from sending a grant in response to a request to transmit, select a different data transmission time, select a different transmit time period, select a different transmit power, select a different quantity of redundancy bits to transmit, or select a different code rate.
  - 11. The method of claim 1, further comprising:
    - transmitting other control information to enable a second wireless node to determine the scheduled transmit time period.
  - 12. The method of claim 11, wherein the other control information comprises, with respect to the scheduled transmit time period, at least one of the group consisting of:
    - transmission start time, transmission end time, and transmission time period.
  - 13. The method of claim 11, wherein the other control information comprises a confirmation message associated with the scheduled transmit time period.
  - 14. The method of claim 1, wherein the scheduled transmit time period is based on a parameter received via a grant message from a second wireless node in response to a request to transmit.
  - 15. The method of claim 1, wherein:
    - the control information comprises a grant message generated by a second wireless node in response to a request to transmit; and
      
      the grant message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmission power, a quantity of redundancy bits to transmit, code rate, expected channel to interference ratio, receive margin, and a pilot signal.
  - 16. The method of claim 1, wherein:
    - the control information comprises a confirmation message generated by a second wireless node; and
      
      the confirmation message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmit power delta, packet format, and a pilot signal.
  - 17. The method of claim 1, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one acknowledgement message that the second wireless node transmitted during the at least one time interval to acknowledge data received during at least one of the time segments; and
      
      the at least one acknowledgement message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmission power for at least one of the time segments, a quantity of redundancy bits to transmit for at least one of the time segments, code rate for at least one of the time segments, expected channel to interference ratio for at least one of the time segments, receive margin, and a pilot signal.
  - 18. The method of claim 1, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one confirmation message that the second wireless node transmitted during the at least one time interval; and
      
      the at least one confirmation message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmit power delta, packet format, and a pilot signal.
  - 19. The method of claim 1, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments; and
      
      the defined period of time after the scheduled transmit time period has a longer duration than any one of the time segments.
  - 20. The method of claim 1, wherein:
    - the control information is received via a control channel;
      
      the data is transmitted via a data channel;
      
      the control channel and the data channel are frequency division multiplexed within a common frequency band; and
      
      the control channel is associated with a plurality of sub-frequency bands that are interspersed within the common frequency band.
  - 21. The method of claim 1, wherein the control information comprises a resource utilization message comprising at least one of the group consisting of:
    - a level of desired interference reduction, a resource to be cleared, and an indication of a degree to which reception at the first wireless node is not meeting a desired level of quality of service.

22. An apparatus for wireless communication, comprising:
- a transmitter configured to transmit data, at a first wireless node, during a scheduled transmit time period; and
  
  a receiver configured to monitor for control information during a defined period of time after the scheduled transmit time period;
  
  wherein transmission of the control information is scheduled based on the scheduled transmit time period.
- View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
- - 23. The apparatus of claim 22, wherein the control information comprises information that was previously transmitted by a second wireless node during the scheduled transmit time period.
  - 24. The apparatus of claim 22, further comprising:
    - a state controller configured to define, based on the control information, a transmit constraints state that is used to issue a request to transmit.
  - 25. The apparatus of claim 24, further comprising:
    - an interference determiner configured to determine, based on the transmit constraints state, whether transmission by the first wireless node would interfere with reception at a second wireless node during another scheduled transmit time period.
  - 26. The apparatus of claim 24, wherein the transmit constraints state comprises at least one of the group consisting of:
    - transmission start time, transmission end time, transmission time period, receive margin, and a received signal strength indication associated with a grant message or an acknowledgement message.
  - 27. The apparatus of claim 24, further comprising:
    - a transmission controller configured to determine, based on the transmit constraints state, whether to abstain from sending a request to transmit, delay sending of a request to transmit, request to transmit at a later time, adjust a transmit time period, or request to transmit at a reduced power level.
  - 28. The apparatus of claim 22, further comprising:
    - a state controller configured to define, based on the control information, a rate prediction state that is used to schedule a requested data transmission.
  - 29. The apparatus of claim 28, further comprising:
    - a reception controller configured to schedule the requested data transmission if the rate prediction state indicates that the first wireless node will be able to receive data in a sustainable manner during a scheduled data transmission, taking into consideration potential transmissions by other wireless nodes.
  - 30. The apparatus of claim number 28, wherein the rate prediction state comprises at least one of the group consisting of:
    - transmission start time, transmission end time, transmission time period, transmit power delta, and a received signal strength indication associated with a confirmation message.
  - 31. The apparatus of claim 28, further comprising:
    - a reception controller configured to determine, based on the rate prediction state, whether to abstain from sending a grant in response to a request to transmit, select a different data transmission time, select a different transmit time period, select a different transmit power, select a different quantity of redundancy bits to transmit, or select a different code rate.
  - 32. The apparatus of claim 22, wherein the transmitter is further configured to transmit other control information to enable a second wireless node to determine the scheduled transmit time period.
  - 33. The apparatus of claim 32, wherein the other control information comprises, with respect to the scheduled transmit time period, at least one of the group consisting of:
    - transmission start time, transmission end time, and transmission time period.
  - 34. The apparatus of claim 32, wherein the other control information comprises a confirmation message associated with the scheduled transmit time period.
  - 35. The apparatus of claim 22, wherein the scheduled transmit time period is based on a parameter received via a grant message from a second wireless node in response to a request to transmit.
  - 36. The apparatus of claim 22, wherein:
    - the control information comprises a grant message generated by a second wireless node in response to a request to transmit; and
      
      the grant message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmission power, a quantity of redundancy bits to transmit, code rate, expected channel to interference ratio, receive margin, and a pilot signal.
  - 37. The apparatus of claim 22, wherein:
    - the control information comprises a confirmation message generated by a second wireless node; and
      
      the confirmation message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmit power delta, packet format, and a pilot signal.
  - 38. The apparatus of claim 22, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one acknowledgement message that the second wireless node transmitted during the at least one time interval to acknowledge data received during at least one of the time segments; and
      
      the at least one acknowledgement message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmission power for at least one of the time segments, a quantity of redundancy bits to transmit for at least one of the time segments, code rate for at least one of the time segments, expected channel to interference ratio for at least one of the time segments, receive margin, and a pilot signal.
  - 39. The apparatus of claim 22, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one confirmation message that the second wireless node transmitted during the at least one time interval; and
      
      the at least one confirmation message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmit power delta, packet format, and a pilot signal.
  - 40. The apparatus of claim 22, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments; and
      
      the defined period of time after the scheduled transmit time period has a longer duration than any one of the time segments.
  - 41. The apparatus of claim 22, wherein:
    - the control information is received via a control channel;
      
      the data is transmitted via a data channel;
      
      the control channel and the data channel are frequency division multiplexed within a common frequency band; and
      
      the control channel is associated with a plurality of sub-frequency bands that are interspersed within the common frequency band.
  - 42. The apparatus of claim 22, wherein the control information comprises a resource utilization message comprising at least one of the group consisting of:
    - a level of desired interference reduction, a resource to be cleared, and an indication of a degree to which reception at the first wireless node is not meeting a desired level of quality of service.

43. An apparatus for wireless communication, comprising:
- means for transmitting data, by a first wireless node, during a scheduled transmit time period; and
  
  means for monitoring for control information during a defined period of time after the scheduled transmit time period;
  
  wherein transmission of the control information is scheduled based on the scheduled transmit time period.
- View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
- - 44. The apparatus of claim 43, wherein the control information comprises information that was previously transmitted by a second wireless node during the scheduled transmit time period.
  - 45. The apparatus of claim 43, further comprising:
    - means for defining, based on the control information, a transmit constraints state that is used to issue a request to transmit.
  - 46. The apparatus of claim 45, further comprising:
    - means for determining, based on the transmit constraints state, whether transmission by the first wireless node would interfere with reception at a second wireless node during another scheduled transmit time period.
  - 47. The apparatus of claim 45, wherein the transmit constraints state comprises at least one of the group consisting of:
    - transmission start time, transmission end time, transmission time period, receive margin, and a received signal strength indication associated with a grant message or an acknowledgement message.
  - 48. The apparatus of claim 45, further comprising:
    - means for determining, based on the transmit constraints state, whether to abstain from sending a request to transmit, delay sending of a request to transmit, request to transmit at a later time, adjust a transmit time period, or request to transmit at a reduced power level.
  - 49. The apparatus of claim 43, further comprising:
    - means for defining, based on the control information, a rate prediction state that is used to schedule a requested data transmission.
  - 50. The apparatus of claim 49, further comprising:
    - means for scheduling the requested data transmission if the rate prediction state indicates that the first wireless node will be able to receive data in a sustainable manner during a scheduled data transmission, taking into consideration potential transmissions by other wireless nodes.
  - 51. The apparatus of claim number 49, wherein the rate prediction state comprises at least one of the group consisting of:
    - transmission start time, transmission end time, transmission time period, transmit power delta, and a received signal strength indication associated with a confirmation message.
  - 52. The apparatus of claim 49, further comprising:
    - means for determining, based on the rate prediction state, whether to abstain from sending a grant in response to a request to transmit, select a different data transmission time, select a different transmit time period, select a different transmit power, select a different quantity of redundancy bits to transmit, or select a different code rate.
  - 53. The apparatus of claim 43, wherein the transmitter is further configured to transmit other control information to enable a second wireless node to determine the scheduled transmit time period.
  - 54. The apparatus of claim 53, wherein the other control information comprises, with respect to the scheduled transmit time period, at least one of the group consisting of:
    - transmission start time, transmission end time, and transmission time period.
  - 55. The apparatus of claim 53, wherein the other control information comprises a confirmation message associated with the scheduled transmit time period.
  - 56. The apparatus of claim 43, wherein the scheduled transmit time period is based on a parameter received via a grant message from a second wireless node in response to a request to transmit.
  - 57. The apparatus of claim 43, wherein:
    - the control information comprises a grant message generated by a second wireless node in response to a request to transmit; and
      
      the grant message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmission power, a quantity of redundancy bits to transmit, code rate, expected channel to interference ratio, receive margin, and a pilot signal.
  - 58. The apparatus of claim 43, wherein:
    - the control information comprises a confirmation message generated by a second wireless node; and
      
      the confirmation message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmit power delta, packet format, and a pilot signal.
  - 59. The apparatus of claim 43, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one acknowledgement message that the second wireless node transmitted during the at least one time interval to acknowledge data received during at least one of the time segments; and
      
      the at least one acknowledgement message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmission power for at least one of the time segments, a quantity of redundancy bits to transmit for at least one of the time segments, code rate for at least one of the time segments, expected channel to interference ratio for at least one of the time segments, receive margin, and a pilot signal.
  - 60. The apparatus of claim 43, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one confirmation message that the second wireless node transmitted during the at least one time interval; and
      
      the at least one confirmation message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmit power delta, packet format, and a pilot signal.
  - 61. The apparatus of claim 43, wherein:
    - a second wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      at least one time interval for transmission or reception of control information is temporally located between the time segments; and
      
      the defined period of time after the scheduled transmit time period has a longer duration than any one of the time segments.
  - 62. The apparatus of claim 43, wherein:
    - the control information is received via a control channel;
      
      the data is transmitted via a data channel;
      
      the control channel and the data channel are frequency division multiplexed within a common frequency band; and
      
      the control channel is associated with a plurality of sub-frequency bands that are interspersed within the common frequency band.
  - 63. The apparatus of claim 43, wherein the control information comprises a resource utilization message comprising at least one of the group consisting of:
    - a level of desired interference reduction, a resource to be cleared, and an indication of a degree to which reception at the first wireless node is not meeting a desired level of quality of service.

64. A computer-program product for wireless communication, comprising:
- computer-readable medium comprising codes executable by at least one computer to;
  
  transmit data, at a first wireless node, during a scheduled transmit time period; and
  
  monitor for control information during a defined period of time after the scheduled transmit time period;
  
  wherein transmission of the control information is scheduled based on the scheduled transmit time period.

65. An access point for wireless communication, comprising:
- an antenna;
  
  a transmitter configured to transmit data via the antenna, at a first wireless node, during a scheduled transmit time period; and
  
  a receiver configured to monitor for control information during a defined period of time after the scheduled transmit time period;
  
  wherein transmission of the control information is scheduled based on the scheduled transmit time period.

66. An access terminal for wireless communication, comprising:
- a transmitter configured to transmit data, at a first wireless node, during a scheduled transmit time period; and
  
  a receiver configured to monitor for control information during a defined period of time after the scheduled transmit time period, wherein transmission of the control information is scheduled based on the scheduled transmit time period; and
  
  a user interface configured to output an indication based on data received by the receiver.

67. A method of wireless communication, comprising:
- receiving, at a first wireless node, information relating to a scheduled transmit time period of a second wireless node; and
  
  scheduling transmission of control information based on the received information.
- View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81)
- - 68. The method of claim 67, wherein the transmission of the control information commences after the scheduled transmit time period.
  - 69. The method of claim 67, wherein the transmission of the control information comprises transmitting, after the scheduled transmit time period, information that was previously transmitted during the scheduled transmit time period.
  - 70. The method of claim 67, wherein the received information comprises at least one of the group consisting of:
    - transmission start time, transmission end time, and transmission time period.
  - 71. The method of claim 67, wherein the received information comprises:
    - a grant message generated in response to a request to transmit, a confirmation message, an acknowledgement message generated to acknowledge receipt of data during the scheduled transmit time period, or a confirmation message transmitted during the scheduled transmit time period.
  - 72. The method of claim 67, further comprising:
    - defining the control information to enable the second wireless node to issue a request to transmit.
  - 73. The method of claim 72, wherein the second wireless node uses the control information to determine whether a transmission associated with the request to transmit would interfere with reception at the first wireless node during another scheduled transmit time period.
  - 74. The method of claim 67, further comprising:
    - defining the control information to enable the second wireless node to schedule a requested data transmission.
  - 75. The method of claim 74, wherein the second wireless node schedules the data transmission if the control information indicates that the second wireless node will be able to receive data in a sustainable manner during the scheduled data transmission, taking into consideration potential transmissions by other wireless nodes.
  - 76. The method of claim 67, wherein:
    - the control information comprises a grant message generated in response to a request to transmit; and
      
      the grant message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmission power, a quantity of redundancy bits to transmit, code rate, expected channel to interference ratio, receive margin, and a pilot signal.
  - 77. The method of claim 67, wherein:
    - the control information comprises a confirmation message; and
      
      the confirmation message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmit power delta, packet format, and a pilot signal.
  - 78. The method of claim 67, wherein:
    - the first wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      wherein at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one acknowledgement message that is transmitted during the at least one time interval to acknowledge the reception of data during at least one of the time segments; and
      
      the at least one acknowledgement message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmission power for at least one of the time segments, a quantity of redundancy bits to transmit for at least one of the time segments, code rate for at least one of the time segments, expected channel to interference ratio for at least one of the time segments, receive margin, and a pilot signal.
  - 79. The method of claim 67, wherein:
    - the first wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      wherein at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one confirmation message that is transmitted during the at least one time interval; and
      
      the at least one confirmation message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmit power delta, packet format, and a pilot signal.
  - 80. The method of claim 67, wherein:
    - the first wireless node transmits or receives data via a data channel;
      
      the control information is transmitted via a control channel;
      
      the control channel and the data channel are frequency division multiplexed within a common frequency band; and
      
      the control channel is associated with a plurality of sub-frequency bands that are interspersed within the common frequency band.
  - 81. The method of claim 67, wherein the control information comprises a resource utilization message comprising at least one of the group consisting of:
    - a level of desired interference reduction, a resource to be cleared, and an indication of a degree to which reception at the first wireless node is not meeting a desired level of quality of service.

82. An apparatus for wireless communication, comprising:
- a receiver configured to receive, at a first wireless node, information relating to a scheduled transmit time period of a second wireless node; and
  
  a scheduler configured to schedule transmission of control information based on the received information.
- View Dependent Claims (83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96)
- - 83. The apparatus of claim 82, wherein the transmission of the control information commences after the scheduled transmit time period.
  - 84. The apparatus of claim 82, wherein the transmission of the control information comprises transmitting, after the scheduled transmit time period, information that was previously transmitted during the scheduled transmit time period.
  - 85. The apparatus of claim 82, wherein the received information comprises at least one of the group consisting of:
    - transmission start time, transmission end time, and transmission time period.
  - 86. The apparatus of claim 82, wherein the received information comprises:
    - a grant message generated in response to a request to transmit, a confirmation message, an acknowledgement message generated to acknowledge receipt of data during the scheduled transmit time period, or a confirmation message transmitted during the scheduled transmit time period.
  - 87. The apparatus of claim 82, further comprising:
    - a transmission parameter definer configured to define the control information to enable the second wireless node to issue a request to transmit.
  - 88. The apparatus of claim 87, wherein the second wireless node uses the control information to determine whether a transmission associated with the request to transmit would interfere with reception at the first wireless node during another scheduled transmit time period.
  - 89. The apparatus of claim 82, further comprising:
    - a transmission parameter definer configured to define the control information to enable the second wireless node to schedule a requested data transmission.
  - 90. The apparatus of claim 89, wherein the second wireless node schedules the data transmission if the control information indicates that the second wireless node will be able to receive data in a sustainable manner during the scheduled data transmission, taking into consideration potential transmissions by other wireless nodes.
  - 91. The apparatus of claim 82, wherein:
    - the control information comprises a grant message generated in response to a request to transmit; and
      
      the grant message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmission power, a quantity of redundancy bits to transmit, code rate, expected channel to interference ratio, receive margin, and a pilot signal.
  - 92. The apparatus of claim 82, wherein:
    - the control information comprises a confirmation message; and
      
      the confirmation message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmit power delta, packet format, and a pilot signal.
  - 93. The apparatus of claim 82, wherein:
    - the first wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      wherein at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one acknowledgement message that is transmitted during the at least one time interval to acknowledge the reception of data during at least one of the time segments; and
      
      the at least one acknowledgement message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmission power for at least one of the time segments, a quantity of redundancy bits to transmit for at least one of the time segments, code rate for at least one of the time segments, expected channel to interference ratio for at least one of the time segments, receive margin, and a pilot signal.
  - 94. The apparatus of claim 82, wherein:
    - the first wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      wherein at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one confirmation message that is transmitted during the at least one time interval; and
      
      the at least one confirmation message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmit power delta, packet format, and a pilot signal.
  - 95. The apparatus of claim 82, wherein:
    - the first wireless node transmits or receives data via a data channel;
      
      the control information is transmitted via a control channel;
      
      the control channel and the data channel are frequency division multiplexed within a common frequency band; and
      
      the control channel is associated with a plurality of sub-frequency bands that are interspersed within the common frequency band.
  - 96. The apparatus of claim 82, wherein the control information comprises a resource utilization message comprising at least one of the group consisting of:
    - a level of desired interference reduction, a resource to be cleared, and an indication of a degree to which reception at the first wireless node is not meeting a desired level of quality of service.

97. An apparatus for wireless communication, comprising:
- means for receiving, at a first wireless node, information relating to a scheduled transmit time period of a second wireless node; and
  
  means for scheduling transmission of control information based on the received information.
- View Dependent Claims (98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111)
- - 98. The apparatus of claim 97, wherein the transmission of the control information commences after the scheduled transmit time period.
  - 99. The apparatus of claim 97, wherein the transmission of the control information comprises transmitting, after the scheduled transmit time period, information that was previously transmitted during the scheduled transmit time period.
  - 100. The apparatus of claim 97, wherein the received information comprises at least one of the group consisting of:
    - transmission start time, transmission end time, and transmission time period.
  - 101. The apparatus of claim 97, wherein the received information comprises:
    - a grant message generated in response to a request to transmit, a confirmation message, an acknowledgement message generated to acknowledge receipt of data during the scheduled transmit time period, or a confirmation message transmitted during the scheduled transmit time period.
  - 102. The apparatus of claim 97, further comprising:
    - means for defining the control information to enable the second wireless node to issue a request to transmit.
  - 103. The apparatus of claim 102, wherein the second wireless node uses the control information to determine whether a transmission associated with the request to transmit would interfere with reception at the first wireless node during another scheduled transmit time period.
  - 104. The apparatus of claim 97, further comprising:
    - means for defining the control information to enable the second wireless node to schedule a requested data transmission.
  - 105. The apparatus of claim 104, wherein the second wireless node schedules the data transmission if the control information indicates that the second wireless node will be able to receive data in a sustainable manner during the scheduled data transmission, taking into consideration potential transmissions by other wireless nodes.
  - 106. The apparatus of claim 97, wherein:
    - the control information comprises a grant message generated in response to a request to transmit; and
      
      the grant message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmission power, a quantity of redundancy bits to transmit, code rate, expected channel to interference ratio, receive margin, and a pilot signal.
  - 107. The apparatus of claim 97, wherein:
    - the control information comprises a confirmation message; and
      
      the confirmation message comprises at least one of the group consisting of;
      
      transmission start time, transmission end time, transmission time period, transmit power delta, packet format, and a pilot signal.
  - 108. The apparatus of claim 97, wherein:
    - the first wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      wherein at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one acknowledgement message that is transmitted during the at least one time interval to acknowledge the reception of data during at least one of the time segments; and
      
      the at least one acknowledgement message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmission power for at least one of the time segments, a quantity of redundancy bits to transmit for at least one of the time segments, code rate for at least one of the time segments, expected channel to interference ratio for at least one of the time segments, receive margin, and a pilot signal.
  - 109. The apparatus of claim 97, wherein:
    - the first wireless node transmits or receives data during a plurality of time segments defined within another scheduled transmit time period;
      
      wherein at least one time interval for transmission or reception of control information is temporally located between the time segments;
      
      the control information comprises at least one confirmation message that is transmitted during the at least one time interval; and
      
      the at least one confirmation message comprises at least one of the group consisting of;
      
      transmission start time for at least one of the time segments, transmission end time for at least one of the time segments, transmission time period for at least one of the time segments, transmit power delta, packet format, and a pilot signal.
  - 110. The apparatus of claim 97, wherein:
    - the first wireless node transmits or receives data via a data channel;
      
      the control information is transmitted via a control channel;
      
      the control channel and the data channel are frequency division multiplexed within a common frequency band; and
      
      the control channel is associated with a plurality of sub-frequency bands that are interspersed within the common frequency band.
  - 111. The apparatus of claim 97, wherein the control information comprises a resource utilization message comprising at least one of the group consisting of:
    - a level of desired interference reduction, a resource to be cleared, and an indication of a degree to which reception at the first wireless node is not meeting a desired level of quality of service.

112. A computer-program product for wireless communication, comprising:
- computer-readable medium comprising codes executable by at least one computer to;
  
  receive, at a first wireless node, information relating to a scheduled transmit time period of a second wireless node; and
  
  schedule transmission of control information based on the received information.

113. An access point for wireless communication, comprising:
- an antenna;
  
  a receiver configured to receive via the antenna, at a first wireless node, information relating to a scheduled transmit time period of a second wireless node; and
  
  a controller configured to schedule transmission of control information based on the received information.

114. An access terminal for wireless communication, comprising:
- a receiver configured to receive, at a first wireless node, information relating to a scheduled transmit time period of a second wireless node; and
  
  a controller configured to schedule transmission of control information based on the received information; and
  
  a user interface configured to output an indication based on data received by the receiver.

Specification

Resources

Litigation Campaign Assessment

Current Assignee
Qualcomm, Inc.
Original Assignee
Qualcomm, Inc.
Inventors
Sampath, Ashwin, Nanda, Sanjiv

Granted Patent

US 8,340,027 B2
Time in Patent Office

Days
Field of Search
US Class Current

370/350
CPC Class Codes

H04W 72/27 between access points

MONITOR PERIOD FOR ASYNCHRONOUS WIRELESS COMMUNICATION

First Claim

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Abstract

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114 Claims

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MONITOR PERIOD FOR ASYNCHRONOUS WIRELESS COMMUNICATION

First Claim

1 Assignment

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Subscription Required

0 Petitions

Subscription Required

Accused Products

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Abstract

Citations

114 Claims

Specification

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Solutions

Use Cases

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