US 2019/0357157 A1 · RADIO NETWORK NODE AND METHOD FOR A RADIO NETWORK NODE

Abstract

In a radio communications network using a TDD structure to communicate with UE terminals, a radio network node applies such a TDD structure that at least one guard period is included in each slot between a downlink transmission period containing at least one downlink symbol and an uplink reception period containing at least one uplink symbol. Each guard period represents an interval during which the radio network node does not transmit any data. The radio network node allocates the guard periods dynamically by checking whether at synchronization degradation criterion is fulfilled; and if at least one of the at least one synchronization degradation criterion is fulfilled, the radio network node increases the guard period to have an extended duration relative to a previous duration.

Claims28

Dependent claims

A radio network node for use in a radio communications network using a time division duplex, TDD, structure to communicate with user equipments, UEs, the radio network node comprising:

a radio interface configured to receive uplink data from the UEs, and transmit downlink data to the UEs;
a processor and;
a memory containing instructions executable by the processor to configure the radio network node to:
apply a TDD structure comprising at least one guard period in each slot between a downlink transmission period and an uplink reception period, the downlink transmission period containing at least one downlink slot in which the radio network node may transmit data to a UE, the uplink reception period containing at least one uplink symbol in which the radio network node may receive data from the UE;
and
increase the guard period from a previous duration to an extended duration relative to the previous duration if at least one synchronization degradation criterion is fulfilled.

3 more elements

A method for a radio network node for use in a radio communications network using a time division duplex, TDD, structure to communicate with user equipments, UEs, the method comprising:

receiving uplink data from the UEs;
transmitting downlink data to the UEs;
including at least one guard period in each slot of the TDD structure between a downlink transmission period and an uplink reception period, the downlink transmission period containing at least one downlink symbol in which the radio network node may transmit data to a UE, the uplink reception period containing at least one uplink symbol in which the radio network node may receive data from the UE;
checking whether at least one synchronization degradation criterion is fulfilled and, if at least one of the at least one synchronization degradation criterion is fulfilled, increasing the guard period from a previous duration to have an extended duration relative to the previous duration.

1 more element

Dependencies are inferred from the claim text.

Radio network node and method for a radio network node

Life of this patent

Radio network node and method for a radio network node

Life of this patent

Abstract

Claims28