Full duplex transmission setup and release mechanism
AssigneeZte Corporation
InventorsAnming Jiang, Bo Sun, Nan Li, Yonggang Fang
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Abstract
In a wireless network, full duplex communication is established using a half-duplex mechanism. During a full duplex communication opportunity, a first quantum of data is transmitted from a first station to a second station and a second quantum of data is received by the first station from the second station. The full duplex transmission opportunity is implicitly or explicitly established and ended using a transmission mechanism understood by half duplex wireless stations.
Claims18
A method of detecting orthogonal frequency division multiplexed (OFDM) transmissions on a wireless transmission medium, comprising:
- detecting a first radio frequency (RF) energy signal in a sliding time window having a duration of a guard interval of the OFDM transmissions;
- correlating the first RF energy signal detected in the sliding time window to obtain correlation peaks along time domain;
- and
- making determination about whether or not the wireless transmission medium is presently carrying transmissions based on a time domain characteristic of the correlation.
An apparatus for detecting orthogonal frequency division multiplexed (OFDM) transmissions on a wireless communication medium, comprising:
- a first autocorrelation detector configured to auto-correlate a stream of data symbols as a first function of time;
- a second autocorrelation detector configured to auto-correlate a delayed version of the stream of symbols as a second function of time;
- a module configured to add one or more delayed versions of a first autocorrelation result output from the first autocorrelation detector and a second autocorrelation result output from the second autocorrelation detector to provide a signal detection output;
- and
- a post-processor configured to decide whether or not a full duplex transmission is taking place on the medium based on the signal detection output.
A non-transitory computer readable medium having code stored thereon, the code when executed by a processor, causing the processor to implement a method that comprises:
- correlating the first RF energy signal detected in the sliding time window to obtain correlation peaks along time domain;
- and
- making determination about whether or not the wireless transmission medium is presently carrying transmissions based on a time domain characteristic of the correlation.
Dependencies are inferred from the claim text.