Message exchange scheme for asynchronous wireless communication
First Claim
1. A method of wireless communication, comprising:
- receiving information indicative of scheduled reception of data at a second wireless node;
defining a transmit constraints state based on the received information;
transmitting, by a first wireless node, a request to transmit data based on the transmit constraints state;
receiving, in response to the request, a grant that schedules the requested data transmission; and
transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
1 Assignment
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Accused Products
Abstract
A message exchange scheme for wireless communication employs a request, a grant, and a confirmation. 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 a 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 a monitoring period is defined after a scheduled transmission period to enable the transmitting node to acquire control information that may otherwise have been transmitted during the scheduled transmission period. 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.
41 Citations
51 Claims
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1. A method of wireless communication, comprising:
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receiving information indicative of scheduled reception of data at a second wireless node; defining a transmit constraints state based on the received information; transmitting, by a first wireless node, a request to transmit data based on the transmit constraints state; receiving, in response to the request, a grant that schedules the requested data transmission; and transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 11, 12, 16)
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7. A method of wireless communication, comprising:
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receiving a resource utilization message that comprises 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 a receiving wireless node is not meeting a desired level of quality of service;determining, based on the resource utilization message, whether to limit a request to transmit data, wherein the determination of whether to limit the request to transmit data comprises at least one of the group consisting of;
abstaining from sending the request to transmit, requesting to transmit at a later time, delaying the request to transmit, determining a transmit time period, and requesting to transmit at a reduced power level;transmitting, by a first wireless node, the request to transmit data; receiving, in response to the request, a grant that schedules the requested data transmission; and transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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8. A method of wireless communication, comprising:
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receiving a resource utilization message that comprises 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 a receiving wireless node is not meeting a desired level of quality of service;performing, in response to the received resource utilization message, at least one of the group consisting of;
changing a rate at which requests are transmitted, abstaining from transmitting requests until a resource utilization message of an associated receiver indicates a higher degree of disadvantage than the received resource utilization message, changing a length of a scheduled transmit time period, changing a transmit power delta, and modifying a set of rules relating to a degree to which transmissions may interfere with reception by a second wireless node;determining, based on the resource utilization message, whether to limit a request to transmit data; transmitting, by a first wireless node, the request to transmit data; receiving, in response to the request, a grant that schedules the requested data transmission; and transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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13. A method of wireless communication, comprising:
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transmitting, by a first wireless node, a request to transmit data; receiving, in response to the request, a grant that schedules the requested data transmission; and transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission, wherein in conjunction with the scheduled data transmission, data is transmitted during a plurality of time segments defined within a scheduled transmit time period, and at least one time interval for transmission or reception of control information is temporally located between the time segments. - View Dependent Claims (14, 15)
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17. An apparatus for wireless communication, comprising:
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a receiver is configured to receive information indicative of scheduled reception of data at a second wireless node; a state controller configured to define a transmit constraints state based on the received information; and a transmitter configured to transmit, at a first wireless node, a request to transmit data based on the transmit constraints state; wherein the receiver is further configured to receive, in response to the request, a grant that schedules the requested data transmission; wherein the transmitter is further configured to transmit, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission. - View Dependent Claims (18, 19, 20, 21, 22, 25, 26, 27, 28, 32)
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23. An apparatus for wireless communication, comprising:
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a receiver configured to receive a resource utilization message that comprises 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 a receiving wireless node is not meeting a desired level of quality of service;a transmission controller configured to determine, based on the resource utilization message, whether to limit the request to transmit data, wherein the determination of whether to limit the request to transmit data comprises at least one of the group consisting of;
abstaining from sending the request to transmit, requesting to transmit at a later time, delaying the request to transmit, determining a transmit time period, and requesting to transmit at a reduced power level; anda transmitter configured to transmit, at a first wireless node, a request to transmit data, wherein the receiver is further configured to receive, in response to the request, a grant that schedules the requested data transmission, and the transmitter is further configured to transmit, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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24. An apparatus for wireless communication, comprising:
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a receiver configured to receive a resource utilization message that comprises 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 a receiving wireless node is not meeting a desired level of quality of service;a transmission controller configured to determine, based on the resource utilization message, whether to limit the request to transmit data, wherein the transmission controller is further configured to perform, in response to the received resource utilization message, at least one of the group consisting of;
changing a rate at which requests are transmitted, abstaining from transmitting requests until a resource utilization message of an associated receiver indicates a higher degree of disadvantage than the received resource utilization message, changing a length of a scheduled transmit time period, changing a transmit power delta, and modifying a set of rules relating to a degree to which transmissions may interfere with reception by a second wireless node; anda transmitter configured to transmit, at a first wireless node, a request to transmit data, wherein the receiver is further configured to receive, in response to the request, a grant that schedules the requested data transmission, and the transmitter is further configured to transmit, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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29. An apparatus for wireless communication, comprising:
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a transmitter configured to transmit, at a first wireless node, a request to transmit data; and a receiver configured to receive, in response to the request, a grant that schedules the requested data transmission; wherein the transmitter is further configured to transmit, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission, and wherein in conjunction with the scheduled data transmission, data is transmitted during a plurality of time segments defined within a scheduled transmit time period, and at least one time interval for transmission or reception of control information is temporally located between the time segments. - View Dependent Claims (30, 31)
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33. An apparatus for wireless communication, comprising:
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the means for receiving information indicative of scheduled reception of data at a second wireless node; means for defining a transmit constraints state based on the received information; means for transmitting, by a first wireless node, a request to transmit data based on the constraints state; means for receiving, in response to the request, a grant that schedules the requested data transmission; and means for transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission. - View Dependent Claims (34, 35, 36, 37, 38, 41, 42, 43, 44, 48)
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39. An apparatus for wireless communication, comprising:
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means for receiving a resource utilization message that comprises 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 a receiving wireless node is not meeting a desired level of quality of service;means for determining, based on the resource utilization message, whether to limit the request to transmit data, wherein the determination of whether to limit the request to transmit data comprises at least one of the group consisting of;
abstaining from sending a request to transmit, requesting to transmit at a later time, delaying a request to transmit, determining a transmit time period, and requesting to transmit at a reduced power level;means for transmitting, by a first wireless node, a request to transmit data based on whether the transmission of data would interfere with reception at a second wireless node; means for receiving, in response to the request, a grant that schedules the requested data transmission; and means for transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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40. An apparatus for wireless communication, comprising:
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means for receiving a resource utilization message that comprises 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 a receiving wireless node is not meeting a desired level of quality of service;means for determining, based on the resource utilization message, whether to limit the request to transmit data, wherein the means for determining further performs, in response to the received resource utilization message, at least one of the group consisting of;
changing a rate at which requests are transmitted, abstaining from transmitting requests until a resource utilization message of an associated receiver indicates a higher degree of disadvantage than the received resource utilization message, changing a length of a scheduled transmit time period, changing a transmit power delta, and modifying a set of rules relating to a degree to which transmissions may interfere with reception by a second wireless node;means for transmitting, by a first wireless node, a request to transmit data based on whether the transmission of data would interfere with reception at a second wireless node; means for receiving, in response to the response, a grant that schedules the requested data transmission; and means for transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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45. An apparatus for wireless communication, comprising:
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means for transmitting, by a first wireless node, a request to transmit data; means for receiving, in response to the request, a grant that schedules the requested data transmission; and means for transmitting, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission, wherein in conjunction with the scheduled data transmission, data is transmitted during a plurality of time segments defined within a scheduled transmit time period, and at least one time interval for transmission or reception of control information is temporally located between the time segments. - View Dependent Claims (46, 47)
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49. A computer-program product for wireless communication, comprising:
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non-transitory computer-readable medium comprising codes executable by at least one computer to; receive information indicative of scheduled reception of data at the second wireless node; define a transmit constraints state based on the received information; transmit, at a first wireless node, a request to transmit data based on the transmit constraints state; receive, in response to the request, a grant that schedules the requested data transmission; and transmit, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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50. An access point for wireless communication, comprising:
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an antenna; a receiver configured to receive information indicative of scheduled reception of data at the second wireless node; a state controller configured to define a transmit constraints state based on the received information; and a transmitter configured to transmit via the antenna, at a first wireless node, a request to transmit data based on the constraints state; wherein the receiver is further configured to receive, in response to the request, a grant that schedules the requested data transmission; wherein the transmitter is further configured to transmit, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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51. An access terminal for wireless communication, comprising:
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a receiver configured to receive information indicative of scheduled reception of data at the second wireless node; a state controller configured to define a transmit constraints state based on the received information; a transmitter configured to transmit via the antenna, at a first wireless node, a request to transmit data based on the constraints state; and a user interface configured to output an indication based on data received by the receiver; wherein the receiver is further configured to receive, in response to the request, a grant that schedules the requested data transmission; wherein the transmitter is further configured to transmit, in response to the grant, a confirmation that comprises information regarding the scheduled data transmission.
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Specification