Enhanced listen-before-talk (LBT) for unlicensed band operation with cell splitting

摘要

Techniques of enhanced listen-before-talk (LBT) at an Evolved NodeB (eNB) are discussed. An example apparatus within an eNB implementing such techniques comprises a receiver circuit, processor, and transmitter circuit. The receiver circuit is configured to receive a set of signals over a selected frequency band. The processor is configured to determine a subset of the set via an energy detection metric; determine, for each signal of the subset, whether that signal comprises one of a plurality of Long Term Evolution (LTE) reference signals (RSs); and implement a back-off procedure in response to a determination that at least one signal of the subset does not comprise one of the plurality of LTE RSs. The transmitter is configured to transmit a transmission comprising a first RS of the plurality of LTE RSs in response to a determination that each signal of the subset comprises one of the plurality of LTE RSs.

主权项

1. An apparatus configured to be employed within an Evolved NodeB (eNB), comprising:
a receiver circuit configured to receive a set of one or more signals over a selected frequency band; a processor operably coupled to the receiver circuit and configured to:
determine a subset of the set of one or more signals via an energy detection metric;determine, for each signal of the subset, whether that signal comprises one of a plurality of long term evolution (LTE) reference signals (RSs) associated with an operator of the eNB; andimplement a back-off procedure in response to a determination that at least one signal of the subset does not comprise one of the plurality of LTE RSs associated with the operator of the eNB; and a transmitter circuit configured to transmit a transmission comprising a first RS of the plurality of LTE RSs in response to a determination that each signal of the subset comprises one of the plurality of LTE RSs associated with the operator of the eNB.