Configuration of signal measurements at user equipment during idle periods of wireless communication channel
The present disclosure relates to a technique for configuring signal measurements to be performed for a wireless communication channel. More specifically, a network node generates a first timing configuration for the wireless communication channel and sends it to a UE. The first timing configuration defines a sequence of Fixed Frame Periods (FFPs). Then, the network node generates a second timing configuration for the wireless communication channel and sends it to the UE. The second timing configuration comprises an indication for the UE to perform the signal measurements (e.g., RSSI measurements) within at least part of an idle period of at least one FFP of the sequence of FFPs. By so doing, it is possible (by using a limited signaling overhead) to ensure that the signal measurements will be always performed within the idle period(s) of the FFP(s). In some embodiments, the indication may cause the UE to perform the signal measurements within the at least part of every N-th FFP (e.g., every second FFP) of the sequence of FFPs, thereby providing a more flexible configuration of the signal measurements in a wireless communication network.
1 . A User Equipment (UE) in a wireless communication network, comprising:
a transceiver;
a processor coupled to the transceiver; and
a memory coupled to the processor and storing processor-executable instructions, wherein the processor is configured, when executing the processor-executable instructions, to:
by using the transceiver, receive a first timing configuration for a wireless communication channel in the wireless communication network from a network node, the first timing configuration comprising a sequence of fixed frame periods (FFPs), each FFP of the sequence of FFPs comprising a channel occupancy period and an idle period for the wireless communication channel, the channel occupancy period being followed by the idle period;
by using the transceiver, receive a second timing configuration for the wireless communication channel from the network node, the second timing configuration comprising an indication for the UE to perform a signal measurement during at least part of the idle period of at least one FFP of the sequence of FFPs; and
perform the signal measurement based on the first timing configuration and the second timing configuration.
2 . The UE of claim 1 , wherein the indication in the second timing configuration causes the UE to perform the signal measurement during the whole idle period of the at least one FFP of the sequence of FFPs.
3 . The UE of claim 1 , wherein the indication in the second timing configuration causes the UE to perform the signal measurement during the at least part of the idle period of each FFP of the sequence of FFPs.
4 . The UE of claim 1 , wherein the indication in the second timing configuration causes the UE to perform the signal measurement during the at least part of the idle period of every N FFP of the sequence of FFPs, where N is a natural number equal to or greater than two.
5 . The UE of claim 1 , wherein the processor is configured to receive the first timing configuration from the network node via at least one of broadcast signaling and a dedicated signaling.
6 . The UE of claim 1 , wherein the processor is configured to receive the second timing configuration from the network node via a dedicated signaling.
7 . The UE of claim 1 , wherein the signal measurement comprises at least one of a Received Signal Strength Indicator (RSSI) measurement, a Reference Signal Received Power (RSRP) measurement, and a Reference Signal Received Quality (RSRQ).
8 . The UE of claim 1 , wherein the processor is further configured, after receiving the second timing configuration, to:
check whether at least one time symbol configured by the network node for the UE to perform an uplink (UL) transmission overlaps with the at least part of the idle period of the at least one FFP of the sequence of FFPs; and
if the at least one time symbol configured by the network node for the UE to perform the UL transmission overlaps with the at least part of the idle period of the at least one FFP of the sequence of FFPs, decide not to use the at least one time symbol for the signal measurement.
9 . The UE of claim 1 , wherein the processor is further configured to:
generate a measurement report based on the performed signal measurement; and
by using the transceiver, transmit the measurement report to the network node.
10 . A network node in a wireless communication network, comprising:
a transceiver;
a processor coupled to the transceiver; and
a memory coupled to the processor and storing processor-executable instructions,
wherein the processor is configured, when executing the processor-executable instructions, to:
generate a first timing configuration for a wireless communication channel in the wireless communication network, the first timing configuration comprising a sequence of fixed frame periods (FFPs), each FFP of the sequence of FFPs comprising a channel occupancy period and an idle period for the wireless communication channel, the channel occupancy period being followed by the idle period;
by using the transceiver, transmit the first timing configuration to a User Equipment (UE);
generate a second timing configuration for the wireless communication channel, the second timing configuration comprising an indication for the UE to perform a signal measurement during at least part of the idle period of at least one FFP of the sequence of FFPs; and
by using the transceiver, transmit the second timing configuration to the UE.
11 . The network node of claim 10 , wherein the indication in the second timing configuration causes the UE to perform the signal measurement during the whole idle period of the at least one FFP of the sequence of FFPs.
12 . The network node of claim 10 , wherein the indication in the second timing configuration causes the UE to perform the signal measurement during the at least part of the idle period of each FFP of the sequence of FFPs.
13 . The network node of claim 10 , wherein the indication in the second timing configuration causes the UE to perform the signal measurement during the at least part of the idle period of every N FFP of the sequence of FFPs, where N is a natural number equal to or greater than two.
14 . The network node of claim 10 , wherein the processor is configured to transmit the first timing configuration to the UE via at least one of broadcast signaling and a dedicated signaling.
15 . The network node of claim 10 , wherein the processor is configured to transmit the second timing configuration to the UE via a dedicated signaling.
16 . The network node of claim 10 , wherein the signal measurement comprises at least one of a Received Signal Strength Indicator (RSSI) measurement, a Reference Signal Received Power (RSRP) measurement, and a Reference Signal Received Quality (RSRQ).
17 . The network node of claim 10 , wherein the processor is configured to generate the second timing configuration such that the at least part of the idle period of the at least one FFP of the sequence of FFPs does not overlap with at least one time symbol configured for the UE to perform an uplink (UL) transmission.
18 . The network node of claim 10 , wherein the processor is further configured to receive, by using the transceiver, a measurement report from the UE, the measurement report being based on the signal measurement performed by the UE based on the first timing configuration and the second timing configuration.
19 . A method for operating a User Equipment (UE) in a wireless communication network, comprising:
receiving a first timing configuration for a wireless communication channel in the wireless communication network from a network node, the first timing configuration comprising a sequence of fixed frame periods (FFPs), each FFP of the sequence of FFPs comprising a channel occupancy period and an idle period for the wireless communication channel, the channel occupancy period being followed by the idle period;
receiving a second timing configuration for the wireless communication channel from the network node, the second timing configuration comprising an indication for the UE to perform a signal measurement during at least part of the idle period of at least one FFP of the sequence of FFPs; and
based on the second timing configuration, performing the signal measurement based on the first timing configuration and the second timing configuration.