System and methods for detection of hidden nodes in cellular systems on unlicensed bands

A method for communicating by a first user equipment (UE) in a communication network, the method comprising:

• receiving a data transmission request from a second UE;
• dynamically determining whether a status of a channel between the first UE and the second UE is clear for transmission, based on signals from at least one neighboring UE communicating with at least one other UE and a permitted limit of interference;
• and
• transmitting the determined status of the channel to the second UE,
• wherein the first UE and the second UE are a long term evolution-unlicensed (LTE-U) node and the neighboring UE is a Wi-Fi node,
• wherein a plurality of waveforms that represent at least one signal transmission being handled by the Wi-Fi node are stored in a reference database,
• wherein at least one of the waveform that matches a transmission requirement of the LTE-U node is selected from the reference database, and
• wherein the at least one of the waveform is used by the LTE-U node for communication with at least one of other LTE-U node.

An apparatus of a second user equipment (UE) in a communication network, the apparatus comprising:

• a transceiver;
• and
• a processor configured to:
• control the transceiver to transmit a data transmission request to a first UE,
• control the transceiver to receive a status of a channel between the first UE and the second UE, from the first UE,
• initiate a data transmission to the first UE, through the channel, if the status of the channel is clear for the data transmission, and
• attempt to establish communication with the first UE, after a specified time period, if the status of the channel is not clear for the data transmission,
• wherein the status of the channel is determined based on a permitted limit of an interference,
• wherein the first UE and the second UE are a long term evolution-unlicensed (LTE-U) node and a neighboring UE is a Wi-Fi node,
• wherein a plurality of waveforms that represent at least one of signal transmission being handled by the Wi-Fi node are stored in a reference database,
• wherein at least one of the waveform that matches a transmission requirement of the LTE-U node is selected from the reference database, and
• wherein the at least one of the waveform is used by the LTE-U node for communication with at least one of other LTE-U node.

A method for communicating by a second user equipment (UE) a communication network, the method comprising:

• transmitting a data transmission request to a first UE in the communication network,
• receiving a status of a channel between the second UE and the first UE, from the first UE;
• initiating a data transmission to the first UE, through the channel, if the status of the channel is clear for the data transmission;
• and
• attempting to establish communication with the first UE, after a specified time period, if the status of the channel is not clear for the data transmission,
• wherein the status of the channel is determined based on a permitted limit of an interference,
• wherein the first UE and the second UE are a long term evolution-unlicensed (LTE-U) node and a neighboring UE is a Wi-Fi node,
• wherein a plurality of waveforms that represent at least one of signal transmission being handled by the Wi-Fi node are stored in a reference database,
• wherein at least one of the waveform that matches transmission requirement of the LTE-U node is selected from the reference database, and
• wherein the at least one of the waveform is used by the LTE-U node for communication with at least one of other LTE-U node.