Midpacket detection schemes for clear channel assessment (CCA)
AssigneeQUALCOMM Incorporated
InventorsBin Tian, Eugene Jong-Hyon Baik, Sameer Vermani, Tao Tian
Life of this patent
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Abstract
Certain aspects of the present disclosure provide methods and apparatus for detecting ongoing transmissions and assessing channel state, based on midpacket detection. One example method generally includes receiving signals on a primary channel; detecting, based on the received signals, occurrence or non-occurrence of a first ongoing packet transmission on a primary channel; and generating at least one of a busy signal or an idle signal based on the detection. In this manner, collisions may be avoided.
Claims14
An apparatus for wireless communications, comprising:
- a receiver configured to receive signals on a primary channel;
- and
- a processing system configured to:
- detect, based on the received signals, occurrence or non-occurrence of a first on-going packet transmission on the primary channel, wherein the processing system is further configured to detect occurrence or non-occurrence of a second on-going packet transmission on a secondary channel, and wherein a first detection level is used when performing detection for the primary channel and a second detection level is used when performing detection for the secondary channel;
- and
- generate at least one of a busy signal or an idle signal based on the detection.
An apparatus for wireless communications, comprising:
- means for receiving signals on a primary channel;
- means for detecting, based on the received signals, occurrence or non-occurrence of a first on-going packet transmission on the primary channel, wherein the means for detecting is further configured to detect occurrence or non-occurrence of a second on-going packet transmission on a secondary channel, and wherein a first detection level is used when performing detection for the primary channel and a second detection level is used when performing detection for the secondary channel;
- and
- means for generating at least one of a busy signal or an idle signal based on the detection.
A method for wireless communications, comprising:
- receiving signals on a primary channel;
- detecting, based on the received signals, occurrence or non-occurrence of a first on-going packet transmission on the primary channel, wherein detecting comprises detecting occurrence or non-occurrence of a second on-going packet transmission on a secondary channel, and wherein a first detection level is used when performing detection for the primary channel and a second detection level is used when performing detection for the secondary channel;
- and
- generating at least one of a busy signal or an idle signal based on the detection.
A non-transitory computer-readable medium having instructions stored thereon for:
- receiving signals on a primary channel;
- detecting, based on the received signals, occurrence or non-occurrence of a first on-going packet transmission on the primary channel, wherein detecting comprises detecting occurrence or non-occurrence of a second on-going packet transmission on a secondary channel, and wherein a first detection level is used when performing detection for the primary channel and a second detection level is used when performing detection for the secondary channel;
- and
- generating at least one of a busy signal or an idle signal based on the detection.
A wireless node, comprising:
- at least one antenna;
- a receiver configured to receive, via the at least one antenna, signals on a primary channel;
- and
- a processing system configured to detect, based on the received signals, occurrence or non-occurrence of a first on-going packet transmission on the primary channel and to generate at least one of a busy signal or an idle signal based on the detection, wherein the processing system is further configured to detect occurrence or non-occurrence of a second on-going packet transmission on a secondary channel, and wherein a first detection level is used when performing detection for the primary channel and a second detection level is used when performing detection for the secondary channel.
Dependencies are inferred from the claim text.