Mode switching schemes for a reconfigurable intelligent surface assisted backscatter communications
Systems, methods, apparatuses, and computer program products for mode switching schemes for reconfigurable intelligent surface (RIS) assisted backscatter communications. The method may include connecting with a network node for communication, receiving, from the network node, an indication of activation of backscattering, receiving a backscatter signal together with a signal sent by the network node, and demodulating the backscatter signal and the signal sent by the network node, the backscatter signal including backscatter data.
1 . A first apparatus, comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus at least to:
communicate, via a second apparatus, with a network node;
receive, via the second apparatus, an indication of activation of backscattering from the network node;
receive, from the second apparatus, a backscatter signal together with a reflected signal, wherein the reflected signal comprises a reflection, by the second apparatus, of a signal sent by the network node; and
demodulate the backscatter signal and the reflected signal,
wherein the backscatter signal includes backscatter data.
2 . The first apparatus of claim 1 , wherein the indication of activation of backscattering comprises a configuration comprising at least one of a start time, a modulation, a coding, or a size of data block.
3 . The first apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, further cause the first apparatus at least to:
send a request for a backscattering based on an application,
wherein the indication of activation of backscattering comprises a configuration based on the application.
4 . The first apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, further cause the first apparatus at least to:
communicate, to the network node, a capability of the first apparatus to receive backscatter signals.
5 . The first apparatus of claim 1 , wherein the second apparatus comprises of is comprised in a reconfigurable intelligent surface; and
the indication of activation of backscattering is received via a reflection of the reconfigurable intelligent surface.
6 . The first apparatus of claim 1 , wherein the second apparatus comprises or is comprised in a reconfigurable intelligent surface; and
the backscatter signal is received from a reflection of the reconfigurable intelligent surface.
7 . The first apparatus of claim 1 , wherein the received indication of activation comprises a downlink signal sent by the network node.
8 . The first apparatus of claim 1 , wherein the first apparatus comprises or is comprised in a user equipment.
9 . An apparatus, comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
in a passive reflection mode of the apparatus, reflect communications between a network node and a user equipment;
receive an indication of activation of a beamformed backscattering mode of the apparatus from the network node; and
in the beamformed backscattering mode of the apparatus, communicate with the network node and the user equipment by receiving an incoming signal, modulating the received incoming signal with backscatter data, and transmitting the modulated incoming signal.
10 . The apparatus of claim 9 , wherein the instructions, when executed by the at least one processor, further cause the apparatus at least to:
generate the backscatter data based on sensing by a sensor of the apparatus.
11 . The apparatus of claim 9 , wherein the indication of activation of the beamformed backscattering mode comprises a configuration comprising at least one of start time, modulation, coding, and size of data block.
12 . The apparatus of claim 9 , wherein the instructions, when executed by the at least one processor, further cause the apparatus at least to:
transmit, to the network node, a request for the backscattering based on a trigger.
13 . The apparatus of claim 9 , wherein the indication of activation of the beamforming backscattering mode comprises a configuration based on an application.
14 . The apparatus of claim 9 , wherein the instructions, when executed by the at least one processor, further cause the apparatus at least to:
reconfigure elements in the apparatus for communicating using the backscattering.
15 . The apparatus of claim 9 , wherein the apparatus comprises or is comprised in a reconfigurable intelligent surface.
16 . An apparatus, comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
communicate, via a reconfigurable intelligent surface, with a user equipment;
receive a request for a backscattering from the reconfigurable intelligent surface; and
transmit, via the reconfigurable intelligent surface, an indication to the user equipment of activation of a beamformed backscattering mode of the reconfigurable intelligent surface.
17 . The apparatus of claim 16 , wherein the instructions, when executed by the at least one processor, further cause the apparatus at least to:
determine to activate the beamformed backscattering mode based on an application or an indication of a trigger included in the request for the backscattering; and
transmit an indication of activation of the beamformed backscattering mode to the reconfigurable intelligent surface.
18 . The apparatus of claim 17 , wherein the instructions, when executed by the at least one processor, further cause the apparatus at least to:
receive an indication of capability of the user equipment to receive backscatter signals, and
wherein the determining to activate the backscattering is further based on the received indication of capability of the user equipment to receive backscatter signals.
19 . The apparatus of claim 17 , wherein the indication of activation of the beamformed backscattering mode comprises a configuration comprising at least one of start time, modulation, coding, and size of data block.
20 . The apparatus of claim 16 , wherein the apparatus comprises or is comprised in a network node.