Enabling full-duplex communication in legacy lte systems
AssigneeNEC Laboratories America, Inc.
InventorsMohammad Khojastepour, Karthikeyan Sundaresan, Sampath Rangarajan
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Abstract
Methods are provided for converting from half-duplex communication to full-duplex communication in a legacy wireless cellular system having a base station. A method includes providing in the base station separate transmit and receive paths for transmit signals and receive signals, respectively. The method further includes converting an uplink frequency band and a downlink frequency band for the base station to a same frequency band. The method also includes applying analog signal cancellation techniques at the base station to isolate a full-duplex wireless reception signal from a full-duplex wireless transmission signal.
Claims20
A method for converting from half-duplex communication to full-duplex communication in a legacy wireless cellular system having a base station, the method comprising:
- providing in the base station separate transmit and receive paths for transmit signals and receive signals, respectively;
- converting an uplink frequency band and a downlink frequency band for the base station to a same frequency band;
- and
- applying analog signal cancellation techniques at the base station to isolate a full-duplex wireless reception signal from a full-duplex wireless transmission signal.
A method for converting from half-duplex communication to full-duplex communication in a wireless cellular system having a base station with an antenna port, the method comprising:
- enabling transmit and receive communications on a same band on the antenna port of the base station;
- providing in the base station separate transmit and receive paths for the full-duplex communication;
- and
- applying analog signal cancellation techniques at the base station to isolate the transmit communications from the receive communications.
A method for converting half-duplex communications to full-duplex communications, comprising:
- providing a first legacy base station and a second legacy base station, each configured to use a same uplink frequency band and a same downlink frequency band for the half-duplex communications;
- and
- switching the uplink frequency band with the downlink frequency band for only one of the base stations to provide the full-duplex communications for client devices interconnected through the base stations.
Dependencies are inferred from the claim text.