WO2025196838A1

WO2025196838A1 - METHODS AND SYSTEMS FOR BEAM MANAGEMENT FOR AMBIENT IoT READER

Info

Publication number: WO2025196838A1
Application number: PCT/IN2025/050412
Authority: WO
Inventors: Vishakha Singh; Deepak Padmanabhan MAYAKUMARI; Thirunageswaram Ramachandran Ramya; Jeniston Deviraj Klutto Milleth; Bhaskar Ramamurthi
Original assignee: Centre of Excellence In Wireless Technology; Indian Institute of Technology Madras
Current assignee: Centre of Excellence In Wireless Technology; Indian Institute of Technology Madras
Priority date: 2024-03-20
Filing date: 2025-03-20
Publication date: 2025-09-25
Anticipated expiration: 2026-09-20

Abstract

The present invention provides a method of communication in a cellular network, wherein the method comprises configuring, by a at least one first node (501), at least one first resource and at least one second resource to at least one second node (503) wherein the at least one first resource is allocated for performing a NR operation and the at least one second resource is allocated for performing an Ambient IoT (A-IoT) operation. The method comprises receiving, by the at least one first node (501), a first signal from the second node (503) in at least one first resource, wherein the first signal comprises one of at least one information about A-IoT operation or NR data and at least one information about A-IoT operation. The present invention also provides a method of communication in a network comprising receiving, by the carrier wave node (CWN) (103), a control signal, wherein the control signal comprises an indication to at least one of transmitting at least one carrier wave and at least one beam for transmitting the carrier wave (CW), transmitting, by the CWN (103), a CW based on the control signal and receiving, by the CWN, a signal wherein the signal comprises at least one device ID and a beam associated with the at least one device ID.

Description

METHODS AND SYSTEMS FOR BEAM MANAGEMENT FOR AMBIENT loT READER

FIELD OF THE INVENTION

[0001] The present disclosure, generally, relates to loT networks. More particularly, the present disclosure relates to a methods and systems for resource management, signalling and beam management for Ambient loT reader in loT networks.

BACKGROUND OF THE INVENTION

[0002] The subject matter discussed in the background section should not be assumed to be prior art merely as a result of its mention in the background section. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may also correspond to implementations of the claimed technology.

[0003] loT refers to an ecosystem of a large number of devices in which every device is connected to a wireless sensor network using low-cost self-powered sensor nodes. Ambient loT devices, also known as ambient intelligence or ambient computing devices, are a subset of loT devices that operate in the background, using sensors, data analytics, and connectivity to create intelligent and adaptive environments. These devices are often unobtrusive, embedded in our surroundings, and provide a continuous flow of data that can be analyzed and acted upon to improve various aspects of our lives.

[0004] In recent years, reduced capability devices with ultra-low power consumption, minimum maintenance cost, and long-life span have attracted much attention in the wireless communication world. A massive number of such devices are expected to be interconnected to improve productivity, efficiency and increase the comforts of life. Further reduction of size, complexity, and power consumption of such devices can enable the deployment of tens or even hundreds of billion devices for various applications and provide added value across the entire value chain. Further, it is impossible to power all such devices by battery that needs to be replaced or recharged manually, which leads to high maintenance cost, serious environmental issues, and even safety hazards in some use cases (e.g., wireless sensor in electric power and petroleum industry). Therefore, energy harvesting can be a potential option to power such devices, where the energy can be harvested using radio waves, light, motion, heat, or any other power source that could be seen suitable.

[0005] Radio Frequency Identification (RFID) is a well-known technology exhibiting above mentioned features. RFID supporting battery less tags has been used in many kinds of applications, such as retail and logistics and has been trialed for manufacturing logistics. However, manual scanning is needed, since the effective communication range is a few meters, which leads to labor intensive and time-consuming operations, or RFID portals/gates, leading to costly deployments. Moreover, the lack of interference management scheme results in severe interference between RFID readers and capacity problems, especially in case of dense deployment. Therefore, it is hard to support large-scale networks with seamless coverage for RFID.

[0006] Ambient loT (A-IoT) devices are an alternate class of reduced capability devices in cellular technology. The communication range of A-IoT devices is larger compared to RFID. An A-IoT reader is expected to support a communication range of tens of meters for indoor scenarios. Further, the cellular gNB can be reused as A-IoT readers to minimize the deployment cost and cellular bands/technologies can be reused to improve performance. Furthermore, a network which scales with the number of devices or A-IoT readers should also be supported for practical deployments, and it should be able to adapt to e.g., interference between A-IoT readers to avoid the cost of complicated network planning. The use cases for A-IoT devices can be broadly classified into four categories such as tag identification, sensor monitoring, target tracking and actuator. Typical scenarios such as automated warehousing, automobile manufacturing, and medical instruments inventory management etc. Sensor monitor refers to the detection of KPI information in the surrounding environment through sensors, and then, using these data to make corresponding judgments to achieve corresponding detection purposes, including danger, disaster, and health detection and data reporting. Target tracking is an application that uses the network to obtain A-IoT device location information to locate targets, including item finding, positioning and tracking, etc. An actuator is a device that converts energy into motion. It does this by taking an electrical signal and combining it with an energy

3 source. An actuator comes in a few different guises, including Pneumatic, Hydraulic, Electric, Thermal and Magnetic.

[0007] The A-IoT devices can be classified into the different categories based on the energy storage/signal generation capability and such category includes Passive A-IoT devices, Semi-Passive A-IoT devices or Active loT-devices. Passive A-IoT device are pure battery less devices with no energy storage capability at all, and completely dependent on the availability of an external source of energy. These passive A-IoT devices can not generate/amplify the signal independently and operates on the backscattering transmission principle. Semi-passive A-IoT device are the devices which have battery but with limited energy storage capability. The stored energy can be used for amplification for signals which increases the communication range. The device cannot generate the signal independently and works on the backscattering transmission principle. Active A-IoT devices are devices which have batteries, which can store energy, and active RF components. Therefore, active A-IoT devices have the capability of generating/amplifying the signal independently.

[0008] Deployment of A-IoT network typically includes A-IoT reader, one or more A-IoT devices and an Intermediate node. The A-IoT reader, controls the operation of one or more A- loT devices. An A-IoT reader can be handheld, mounted to infrastructure (e.g. base station (A- loT reader), an User equipment (UE) etc). It may or may not be battery constrained (depending on the scenario) and can (but not necessarily need to) connect to an A-IoT server. The A-IoT reader is responsible for managing communication with the A-IoT devices. The A-IoT reader establish connection with A-IoT device, sends commands/control, collects data from the A-IoT devices, and coordinates their activities. The A-IoT reader may be connected to a larger network or the internet, enabling data exchange with other systems or cloud services. The A- loT reader can be single entity or a group of nodes. E.g., one node can transmit the control signals in DL for the one or more A-IoT device and another node can receive the backscattered or transmitted signal from the one or more A-IoT device. A-IoT device can be attached to any object, and can connect to a A-IoT reader with A-IoT Radio. The tag may not have any active connection to an A-IoT server. Any signal/information exchange between the A-IoT device and server is via the A-IoT reader (e.g. A-IoT device signature, configuration, data reporting) and is controlled by the A-IoT reader. Further, in some cases direct communication is not possible between A-IoT reader and A-IoT device. In such cases an intermediate node may be placed between A-IoT reader and A-IoT device to improve the communication. The intermediate node can be a UE, a relay or repeater, an integrated access and backhaul node, etc. For ex., if the A-IoT reader and A-IoT device are separated by large distance, then the backscattered signal from A-Iot device may not reach the reader effciently. In such cases a repeater, under the control of A-IoT reader, can be placed to receive signal backscattered by the A-IoT device and to forward it to reader.

[0009] Carrier wave node (CWN) is generally used to transmits carrier waves to the A- loT devices. The A-IoT device uses carrier wave for backscattering and the energy harvesting. Based on the received carrier waves, the A-IoT device harvest energy, which can be used to perform operation of transmission and reception of data to and from A-IoT reader in the cellular communication. Further, the A-IoT device modulate the carrier wave and backscatter to A-IoT reader, based on control information from A-IoT reader. CWN can be inside the topology or it can be outside the topology. A-IoT devices mainly work on the principle of backscatter communication. The backscatter transmitter (e.g., A-IoT device) reflects the carrier wave and modifies one or more characteristics (e.g., amplitude, phase, or center frequency) of the reflected signal according to the information bits stored in its memory. Communication via back scattering instead of active radiation reduces the RF frontend of the A-IoT device (E.g. tag and sensor etc.) to a single transistor switch, which minimizes the manufacturing cost as well as energy demands.

[0010] The carrier wave can be transmitted by the A-IoT reader itself or using an external node also known as carrier wave node (CWN)), near to the A-IoT device. In the case of A- loT reader transmitting the carrier, the pathloss encountered by the backscattered wave is twice the distance between A-IoT reader and the A-IoT device which significantly reduces the coverage. Further, transmission of carrier wave and reception of backscattered signal happen simultaneously at the A-IoT reader, demanding full duplex operation. Also, the transmitted carrier wave interferes with the reception of backscattered signal, a.k.a. self-interference, and impacts the performance of the system. The advantage with latter method (using CWN) is reduction in pathloss and increase in coverage as the node generating carrier wave is near to the A-IoT device. Further, it reduces interference at the A-IoT reader as the A-IoT reader is only receiving from the A-IoT device. [0011] The A-IoT device derives energy to turn on the modulating and backscattering circuitry using the energy harvesting mechanism. The energy harvesting can be performed using carrier wave, RF signal, solar energy, etc. Once the A-IoT device has harvested enough energy it turns on the circuitry, modulates the carrier wave based on the stored value and back scatter modulated carrier wave to the A-IoT reader. The energy remaining after backscattering can be stored in the A-IoT device depending on the energy storing capability of the A-IoT device. The A-IoT devices can be employed in both monostatic and bi-/multi- static configurations., where the term monostatic is used when both the CWN and the A-IoT reader functionalities are performed by the same device, while bistatic deployment specifies the scenario where the CWN and the A-IoT reader are physically two different devices.

[0012] In scenarios where the CWN and the A-IoT reader are different devices, there exists a need for determining best beam for the A-IoT reader for receiving the data or signal from the A-IoT devices and determining the best beam for transmitting data or control or carrier wave to the A-IoT devices, in various deployment scenarios. Also, there exists a need for sending control signals to CWN and the configurations, content information for the control signals of the A-IoT devices.

SUMMARY OF THE INVENTION

[0013] The summary is provided to introduce aspects related to a method of communication in a cellular network, and the aspects are further described below in the detailed description. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the claimed subject matter.

[0014] According to one embodiment, the present disclosure provides a method of communication in a cellular network, wherein the method comprises configuring, by a at least one first node, at least one first resource and at least one second resource to at least one second node wherein the at least one first resource is allocated for performing a NR operation and the at least one second resource is allocated for performing an Ambient loT (A-IoT) operation. The method comprises receiving, by the at least one first node, a first signal from the at least one second node in at least one first resource, wherein the first signal comprises one of at least one information about A-IoT operation or NR data and at least one information about A-IoT operation.

[0015] In an embodiment, the at least one information about A-IoT operation comprises at least one of a status of the at least one device, at least one identity of the at least one device, at least one information stored in the at least one device and at least one value measured by the at least one device.

[0016] In an embodiment, the at least one information about A-IoT operation is multiplexed with information about the NR operation using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing.

[0017] In an embodiment, the first signal is received in at least one of a physical uplink shared channel and a physical uplink control channel.

[0018] In an embodiment, the NR operation is communication between the at least one first node and the at least one second node.

[0019] In an embodiment, the A-IoT operation is communication between the at least one second node and at least one device.

[0020] In an embodiment, the at least one first resource comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a number of frequency resources, a carrier frequency, identity of at least one bandwidth part and a bandwidth.

[0021] In an embodiment, the time is represented using at least one of a slot index, a number of slots, a symbol index and a number of symbols. Further, the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for the NR operation. [0022] In an embodiment, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0023] In an embodiment, the at least one second resource comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a carrier frequency, a number of frequency resources, at least one frequency shift, identity of at least one bandwidth part and a bandwidth.

[0024] In an embodiment, the time is represented using at least one of a slot index, a number of slots, a number of clock cycles, a symbol index and a number of symbols.

[0025] In an embodiment, the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for NR operation configured in the at least one first resource.

[0026] In an embodiment, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0027] In an embodiment, the at least one second resource comprises at least one of common information and device specific information for A-IoT operation.

[0028] In an embodiment, the at least one second node is capable of acting as a A-IoT reader.

[0029] In an embodiment, the method further comprises transmitting an indication to the at least one second node for performing the A-IoT operation.

[0030] In an embodiment, the at least one second resource is a subset of the at least one first resource. [0031] In yet another embodiment, the at least one second resource is repeated periodically based on the periodicity of at least one first resource.

[0032] In an embodiment, the at least one second resource comprises information about at least one of a serving area to perform the A-IoT operation, at least one device, a type of the A- loT operation, and a content of the first signal. The information about the type of A-IoT operation comprises at least one of inventory, command, positioning, sensing, backscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation.

[0033] In an embodiment, the information about the content of the first signal comprises at least one of an identity of the at least one device that is active, a number of the at least one device that is active, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device.

[0034] In a further embodiment, the information about the serving area to perform A-IoT operation comprises a beam configuration. The beam configuration comprises one of an identity of at least one beam of the at least one second node and an identity of at least one reference signal configured to the at least one second node.

[0035] In an embodiment, one of at least one first node and at least one second node is one of reader, A-IoT reader, BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB).

[0036] In yet another embodiment, the device is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device.

[0037] In an embodiment, the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor. [0038] According to another embodiment, the present disclosure provides a method of communication in a cellular network, wherein the method comprises receiving by at least one second node from at least one first node, at least one first resource configuration and at least one second resource configuration, wherein the at least one first resource configuration is for performing a NR operation and the at least one second resource configuration is for performing an Ambient loT (A-IoT) operation. The method further comprises transmitting by the at least one second node, a second signal to at least one device in at least one resource indicated in the at least one second resource configuration, wherein second signal comprises at least one of a carrier-wave, at least one scheduling for UL transmission and at least one scheduling for DL reception. The method further comprises receiving by the at least one second node, a third signal from the at least one device based on the second signal, wherein the third signal comprises at least one identity of the at least one device, and transmitting by the second node, one of at least one information about the A-IoT operation or NR data and at least one information about A-IoT operation based on the at least one first resource configuration.

[0039] In an embodiment, the reception of the third signal is in at least one resource scheduled for the transmission of the second signal.

[0040] In an embodiment, the transmission of the second signal is in at least one resource scheduled for a trigger signal for triggering the at least one device to start the A-IoT operation.

[0041] In an embodiment, the NR operation is communication between the at least one first node and the at least one second node.

[0042] In an embodiment, the A-IoT operation is communication between the at least one second node and at least one device.

[0043] In an embodiment, the at least one first resource configuration comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a number of frequency resources, a carrier frequency, identity of at least one bandwidth part and a bandwidth. [0044] In an embodiment, the time is represented using at least one of a slot index, a number of slots, a symbol index and a number of symbols.

[0045] In an embodiment, the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for the NR operation.

[0046] In an embodiment, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0047] In an embodiment, the transmission by the at least one second node to the at least one first node in at least one of a physical uplink shared channel and a physical uplink control channel.

[0048] In an embodiment, the second signal comprises one of a broadcast information and a device specific information.

[0049] In an embodiment, the transmitting the second signal comprises at least one of transmission of a synchronization signal, transmission of a trigger signal for triggering the at least one device to start the A-IoT operation, an indication to perform modulation, at least one device ID, an information about a content of the third signal and an indication of type of A-IoT operation.

[0050] In an embodiment, the indication of type of A-IoT operation comprises at least one of inventory, command, positioning, sensing, backscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation.

[0051] In an embodiment, the information about the content of the third signal comprises at least one of an identity of the at least one device, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device. [0052] In an embodiment, the at least one of the at least one scheduling for UL transmission, the at least one scheduling for DL reception and at least second resource configuration comprises at least one of a time offset, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a reference time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resources, a bandwidth, an identity of at least one bandwidth part, at least one frequency shift, a carrier frequency, and a subcarrier spacing.

[0053] In an embodiment, the time is represented using at least one of a slot index, number of slots, a symbol index and a number of symbols.

[0054] In an embodiment, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0055] In an embodiment, the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for NR operation configured in the at least one first resource configuration.

[0056] In an embodiment, the at least one information about A-IoT operation comprises at least one of a status of the at least one device, at least one identity of at least one device, at least one information stored in the at least one device, and at least one value measured by the at least one device.

[0057] In an embodiment, the at least one information about the A-IoT operation is multiplexed with information about the NR operation using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing.

[0058] In an embodiment, the at least one second configuration comprises at least one of common information and device specific information for A-IoT operation. [0059] In an embodiment, the third signal comprises at least one of a modulated carrier wave, an unmodulated carrier wave, at least one information stored in the at least one device, and at least one value measured by at least one device.

[0060] In an embodiment, the one of the second signal and the third signal is multiplexed using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing based on the second signal.

[0061] In an embodiment, the second signal comprises at least one monitoring pattern for at least one subsequent downlink reception for the at least one device.

[0062] In an embodiment, the at least one monitoring pattern comprises at least one of a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a reference time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resource, a bandwidth, an identity of at least one bandwidth part, at least one frequency shift, a carrier frequency, and a subcarrier spacing.

[0063] In an embodiment, the time is represented using at least one of a slot index, a number of slots, a symbol index and a number of symbols.

[0064] In an embodiment, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0065] In an embodiment, the at least one second node is capable of acting as a A-IoT reader.

[0066] In an embodiment, the method further comprises receiving an indication from the at least one first node for performing the A-IoT operation.

[0067] In an embodiment, the at least one second resource configured is a subset of the at least one resource configured in the at least one first resource configuration and the at least one second resource configured may be repeated periodically based on the periodicity of at least one resource configured in the at least one first resource configuration.

[0068] In an embodiment, the at least one second resource configuration comprises information about at least one of a serving area to perform A-IoT operation, at least one A-IoT device, type of A-IoT operation, and a content of the first signal.

[0069] In an embodiment, the information about the type of A-IoT operation comprises at least one of inventory, command, positioning, sensing, backscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation.

[0070] In an embodiment, the information about the content of the first signal comprises at least one of an identity of the at least one device that is active, a number of the at least one device that is active, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device.

[0071] In an embodiment, the information about the serving area to perform A-IoT operation comprises a beam configuration.

[0072] In an embodiment, the beam configuration comprises one of an identity of at least one beam of the at least one second node and an identity of at least one reference signal configured to the at least one second node.

[0073] According to another embodiment, the present disclosure provides a method of communication in a cellular network, wherein the method comprises transmitting, by a reader, a fourth signal in at least one transmit beam from plurality of transmit beams, wherein the fourth signal comprises a control information. The method further comprises receiving, by the reader, a fifth signal in at least one receive beam from plurality of receive beams and associating a beam from the at least one receive beam with at least one of at least one device ID and at least one first beam, based on the received power of the fifth signal. [0074] In an embodiment, the received power of the fifth signal is measured on the beam that is associated with at least one device ID.

[0075] In an embodiment, the power of the fifth signal received exceeds one of a predefined threshold value and a preconfigured threshold value.

[0076] In an embodiment, the at least one device ID is at least one of received in the fifth signal, determined based on the scheduling of the fifth signal, and determined based on at least one of a time resource and a frequency resource in which the fifth signal is received.

[0077] In an embodiment, transmitting the fourth signal comprises transmitting a carrier wave.

[0078] In an embodiment, the at least one first beam is at least one of at least one beam from the at least one transmission beam of reader and at least one beam indicated in a control information for the CWN.

[0079] In an embodiment, the fifth signal comprises at least one of the at least one device ID, a feedback, at least one information stored in the at least one device, and at least one value measured by at least one device.

[0080] In an embodiment, the control information comprises a scheduling information to perform at least one of transmission of a carrier wave, transmission of the fifth signal, backscattering of fifth signal, and reception of a signal.

[0081] In an embodiment, the control information further comprises at least one of backscattering with modulation, backscattering without modulation, transmission with modulation, transmission without modulation and, indication to perform at least one of inventory, command, positioning and sensing. [0082] In an embodiment, the scheduling information comprises at least one of: at least one resource to transmit a carrier wave, at least one beam configuration, a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resource, at least one frequency shift, a frequency of the carrier wave, bandwidth, and a subcarrier spacing.

[0083] In an embodiment, the at least one beam configuration comprises at least one at least one beam sweeping pattern.

[0084] In an embodiment, the at least one beam sweeping pattern comprises at least one of at least one beam ID, at least one time resource where at least one beam ID is active, and the periodicity with which the at least one beam ID is active.

[0085] In an embodiment, the at least one beam sweeping pattern is based on the at least one of time duration for performing the energy harvesting and time duration for performing the backscattering by the at least one device.

[0086] In an embodiment, reader is one of BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB).

[0087] In an embodiment, the device is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device.

[0088] In an embodiment, the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

[0089] According to yet another embodiment, the present disclosure provides a method of communication in a cellular network, wherein the method comprises: receiving, by the carrier wave node (CWN), a control signal, wherein the control signal comprises an indication to at least one of transmitting at least one carrier wave and at least one beam for transmitting the carrier wave (CW). The method further comprises transmitting, by the CWN, a CW based on the control signal and receiving, by the CWN, a sixth signal wherein the sixth signal comprises at least one device ID and a beam associated with the at least one device ID.

[0090] In an embodiment, the control signal comprises scheduling information to perform at least one of transmission of the CW and reception of the sixth signal.

[0091] In an embodiment, the scheduling information comprises at least one of: at least one resource to transmit a carrier wave, at least one beam configuration, a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resource, a bandwidth, a frequency of CW, and a subcarrier spacing.

[0092] In an embodiment, the at least one beam configuration comprises at least one of at least one beam sweeping pattern.

[0093] In an embodiment, the at least one beam sweeping pattern comprises at least one of at least one beam ID, at least one time resource where at least one beam ID is active, and the periodicity with which the at least one beam ID is active.

[0094] In an embodiment, the at least one beam sweeping pattern is based on the at least one of time duration for performing the energy harvesting and time duration for performing the backscattering by the at least one device.

[0095] In an embodiment, CWN is one of BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB).

[0096] In an embodiment, the device is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device. [0097] In an embodiment, the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

BRIEF DESCRIPTION OF THE DRAWINGS

[0098] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification.

[0099] Fig. 1 illustrates an exemplary architecture which shows the connection between a reader and an A-IoT device;

[0100] Fig. 2 illustrates general block diagram of a reader and the A-IoT device according to an embodiment of the present invention;

[0101] Fig. 3 illustrate an exemplary transmission and receiving beam of the loT reader according to an embodiment of the present invention;

[0102] Fig. 4 illustrate an exemplary beam management with carrier wave node in the loT network between the reader and the A-IoT device, according to an embodiment of the present invention;

[0103] Fig. 5 illustrate an exemplary communication network, according to an embodiment of the present invention;

[0104] Fig. 6 illustration a method of communication in a cellular network for resource configuration, according to an embodiment of the present invention;

[0105] Fig. 7 illustration a method of communication in a cellular network, according to another embodiment of the present invention;

[0106] Fig. 8 illustration a method of communication in a cellular network for beam management, according to yet another embodiment of the present invention; and

18 [0107] Fig. 9 illustration a method of communication implemented by carrier wave node in a cellular network, according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0108] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.

[0109] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. This disclosure may however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those of ordinary skill in the art. Moreover, all statements herein reciting embodiments of the disclosure, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure).

[0110] The present invention describes methods of beamforming for A-IoT reader. The present invention describes methods to determine best beam for the A-IoT reader for receiving the data or signal from the A-IoT devices and the best beam for transmitting data or control or carrier wave to the A-IoT devices, in various deployment scenarios. Further, the present invention describes the information related to control signal for CWN and the configurations, content information for the control signal of the A-IoT device. In the invention term A-IoT reader and CWN are used for explaining the methods, where A-IoT reader can be BS, UE, NCR, relay and IAB etc. Similarly, CWN can be BS, UE, NCR, IAB, relay or any other active RF device. An A-IoT device either can be tag, which can be attached to any passive device, active device, sensor, etc or can be active device with RF components. [0111] An exemplary system is illustrated in Fig. 1 which shows that a reader 101 is wirelessly coupled to one or more devices 102a. . . .102n (collectively referred to as 102). In an embodiment, one or more devices 102 are connected to the reader 101 and information is transmitted, backscattered and received between the reader 101 and the device 102. The reader 101 is responsible for managing communication with the devices 102 and serves as a reader that collects data from the devices 102, sends commands, and coordinates their activities. The reader 101 may be connected to a larger network or the internet, enabling data exchange with other systems or cloud services. In an embodiment, the reader is any one of a handheld device, a base station, a use equipment (UE), Network-Controlled Repeater (NCR), Integrated Access and Backhaul (IAB), repeater, or any combination thereof. In another embodiment, the device is at least one of an ambient loT device and loT device. In a further embodiment, the ambient loT devices is any one of passive loT device, Semi-passive loT device, or Active A-IoT device or any combination thereof. Fig. 2 illustrates a general block diagram of the reader 101 and the device 102 according to an embodiment of the present disclosure. The reader 101 comprises a memory 101a, a processor 101b and a transceiver 101c. In an example, the processor 101b includes a processor(s) that may be a single processing unit or a number of units, all of which could include multiple computing units. The processor 101b may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, logical processors, virtual processors, state machines, logic circuitries, and/or any devices that manipulate signals based on operational instructions. Among other capabilities, the processor 101b is configured to fetch and execute computer-readable instructions and data stored in the memory 101a. The memory 101a may include any non-transitory computer- readable medium known in the art including, for example, volatile memory, such as static random-access memory (SRAM) and dynamic random access memory (DRAM), and/or nonvolatile memory, such as read-only memory (ROM), erasable programmable ROM, flash memories, hard disks, optical disks, and magnetic tapes. The memory 101a and the processor 101b are coupled to the transceiver 101c for sending and receiving the data/information from the one or more devices 102.

[0112] In an embodiment, the device 102 comprises a circuitry 102a and/or a battery source 102b. The circuitry 102a may be provided as a hardware component such as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuitries, and/or any devices that manipulate signals based on operational instructions. In an embodiment, the devices are equipped with a battery source 102b. Further, the device may comprise a memory 102c which for example, may comprise device ID or pre-configured information. In a further embodiment, the device 102 comprises a backscattering circuitry 102d, an energy harvesting circuitry 102e, a receiving circuitry 102f, a clock circuitry 102g and a transmission circuitry 102h.

[0113] The presence of battery source 102b helps in signal amplification or even independent Radio Frequency signal generation. The batteries 102b also allow for greater flexibility, including mobility in their deployment, as they are not dependent on external energy sources. However, efficient power management is crucial to extend the operational lifespan of these devices, as replacing batteries in large-scale deployments can be costly and sometimes become impractical. This topology is commonly employed in applications such as environmental monitoring, asset tracking, and industrial automation, command, and positioning, where the reader and devices work together to collect and transmit data for analysis and decision-making.

[0114] Battery based devices are mainly used in the outdoor scenarios or where the distance between reader and the devices is large. The device needs to connect with reader, and it has to synchronize in downlink as well as in uplink. The Downlink and Uplink synchronization, called as initial access procedure refers to the process a device follows to establish a connection with a reader. This procedure is crucial for allowing the device to access the network and start using its services.

[0115] Fig. 3 illustrate an exemplary transmission and receiving beam of the loT reader device according to an embodiment of the present invention. As illustrated, the A-IoT reader 101 may transmit DL signals and carrier waves to the A-IoT devices 102. Further, the A-IoT reader 101 receives backscattered signal from A-IoT device 102 using receive beam. The A- loT readers 101 may form multiple transmit and receive beams. The A-IoT reader 101 starts the beam sweeping procedure with all possible beams. For e.g. The A-IoT reader 101 can form 4 transmit and 4 receive beams as depicted in Fig 3. The A-IoT reader 101 transmits the carrier wave or the downlink signal to the A-IoT device 102 using the first transmit beam and tries to receive the backscatter/transmitted signal from the A-IoT device 102 using first receive beam. Further, the A-IoT reader 101 determines the strength of the received signal and demodulates the received signal to obtain the ID of the backscattered A-IoT device 102. Then the A-IoT reader 101 transmits the carrier wave or the DL data to the A-IoT device 102 using the second beam and then tries to receive the backscattered/transmitted signal from the A-IoT device 102 using the second receive beam. Further, the A-IoT reader 101 determines the strength of the received signal and demodulate the received signal to obtain the ID of the backscattered A-IoT device 102. Similarly, the A-IoT reader 101 further sweeps for all the possible transmit-receive beam combinations.

[0116] Beam sweeping at the A-IoT reader 101 depends on the energy harvesting time required by the A-IoT device 102 and to backscatter the signal. For e.g., the A-IoT device 102 takes tl’ time to harvest the energy, and at time t2’ it backscatters the signal. Therefore, the beam should not change for the (tl ’+t2’) time duration during the beam sweeping procedure. If the A-IoT device 102 has a variable energy harvesting time, then the maximum time is considered. The A-IoT reader 101 associates a transmit-receive beam pair with an A-IoT device 102 based on strength of the received signal. For e.g., if strength of the received signal from A- loT device 102(1) is maximum for (transmit beam 1 and receive beam 2), then A-IoT reader 101 can assign the beam pair (transmit beam 1 and receive beam 2) for the A-IoT device 102(1). In another e.g., any beam pair which provides received signal strength above certain threshold can be used for association. The association can be valid for a certain time duration after which the A-IoT reader 101 has to repeat the beam sweeping and measurement process or the beam pair identified by alternative methods. Therefore, the process can be periodic or aperiodic on a needy basis. Further, in one option, the process is transparent to the A-IoT device 102. In that case, the A-IoT device 102 modulates and backscatters the carrier wave just like normal UL. In another option, A-IoT devices 102 is informed about the beam management process, or a different behavior is defined for the A-IoT device 102 during the beam management process. For e.g., during the measurement period, the A-IoT device 102 backscatters the carrier wave without modulation so that the measurement process won’t be affected by modulation. The A- loT reader 101 multiplex devices in time/frequency resources and determines the backscattered device based on multiplexing pattern. For e.g., reader 101 configure A-IoT device 102(1) to backscatter in time tl and configure A-IoT device 102(2) in time t2, for measurement. Based on configuration, the A-IoT reader 101 associates the received signal strength at time tl and t2 to device 102(1) and device 102(2) respectively. In this method, the A-IoT 101 reader schedules the time and/or frequency resources and informs the A-IoT device 102 using control signal. [0117] Fig. 4 illustrate an exemplary beam management with carrier wave node in the loT network between the reader and the A-IoT device, according to an embodiment of the present invention. As illustrated, the A-IoT reader 101 and carrier wave node (CWN) 103 are separate nodes and the CWN 103 transmit the carrier waves to the A-IoT device 102 and based on the received carrier waves, the A-IoT device 102 gets energized and modulates the received carrier and backscatters/transmits it’s ID to the A-IoT reader 101. In this scenario, the CWN 103 has the capability of forming multiple beams for receiving the data from the A-IoT reader 101 and transmitting the carrier waves to the A-IoT device 102. The A-IoT reader 101 transmits the trigger signal using the transmit beam for the CWN 103 to transmit the required carrier waves to the A-IoT devices 102. Upon detecting the trigger signal by the CWN, it starts transmitting the carrier waves to the A-IoT device 102 using its transmit beam. The A-IoT device 102 receives the carrier wave and starts the energy harvesting process. Once the A-IoT device 102 accumulates sufficient energy, the A-IoT device 102 initiates the backscattering mechanism. The A-IoT reader 101 receives the backscattered/transmitted signal from the A-IoT device 102 using a receive beam. The A-IoT reader 101 tries to find its best receive beam.

[0118] There are alternative methods for finding the best receive beam at the A-IoT reader 101 and the transmit beam at the CWN 103. In a first method, assuming that the A-IoT reader 101 and the CWN 103 can form X and Y beams, respectively and the A-IoT reader 101 transmits the trigger signal to the CWN 103 using the i¹¹¹ beam. After receiving the trigger signal, the CWN 103 transmits the carrier wave to the A-IoT device 102 using the j ¹¹¹ beam. Further, the A-IoT device 102 backscatters its signal to the A-IoT reader 101, and the A-IoT reader 101 tries to receive the backscattered signal using the k¹¹¹ receive beam, where ( j) 6 {0,1, . . , Y — 1} and (i, k~) 6 {0,1, . . , X — 1}. In this method, the A-IoT reader 101 performs beam sweeping with all the possible beam combinations of (i,j,k) and tries to detect the energy and compare with the predefined threshold for all possible combinations of (i,j,k) beams. The A-IoT 101 reader demodulates the received signal and finds the best beam for reception based on the highest received power in all combination of (i,j,k) beams. Based on the received power, the A-IoT reader 101 forms the beam pair link among the transmit beams of the A-IoT reader 101 to the CWN 103, the transmit beam of the CWN 103 to A-IoT device 102 and the receive beam of the A-IoT reader 101 for receiving the signal from the A-IoT device 102. These (3-tuple) beam pair links can further be used for transmission and reception of the data between the A- loT reader 101 and A-IoT device 102 using the CWN 103. The backscattering signal contains the A-IoT device ID and after demodulating the backscattered signal, the A-IoT reader 101 associates the beam ID with the A-IoT device 102. In this method, the A-IoT reader 101 transmits the signalling information to the CWN 103 about the beam pair link and which beam CWN 103 should use for transmitting the carrier waves to the A-IoT device 102. The signalling information can contain the beam ID associated with A-IoT device.

[0119] In a second method, assuming that the A-IoT reader 101 and CWN 103 can form X and Y beams, respectively and A-IoT reader 101 transmits the trigger signal to the CWN 103 using the beam in which the CWN 103 is connected to the A-IoT reader 101. After receiving the trigger signal, the CWN 103 starts transmitting the carrier waves to the A-IoT device 102 using the i^thbeam. After receiving the carrier waves from the CWN 103, the A-IoT device 102 backscatters its signal to A-IoT reader 101 and the A-IoT reader 101 tries to receive the backscattered signal using the j¹¹¹ receive beam, where j, 6 {0,1, . , , X — 1} and i, E {0,1, , ., Y — 1}. In this method, the A-IoT reader 101 performs beam sweeping with all the possible beam combination of (i,j) and tries to detect and compare with the predefined threshold energy in all the possible combination of (i,j) beams. The A-IoT reader 101 demodulates the received signal and finds the best beam for received signal based on the highest received power in all combination of (i,j) beams. Based on the received power, the A- loT reader 101 forms the beam pair link between the transmission beam of the CWN 103 to the A-IoT device 102 and the receive beam of the A-IoT reader 101 for receiving the signal from the A-IoT device 102. This beam pair link can further be used for transmission and reception of the data between the A-IoT reader 101 and A-IoT device 102 using the CWN 103. The backscattered signal contains the A-IoT device ID and after demodulating the backscattered signal, the A-IoT reader 101 associates the beam ID with the A-IoT device 102. In this method, the A-IoT reader 101 transmits the signalling information to the CWN 103 about the beam pair link and which beam the CWN 103 should use for transmitting the carrier wave to the A-IoT device 102. The signalling can contain the beam ID associated with A-IoT device 102.

[0120] The association of the beam to A-IoT devices can be done using one or more methods. According to one embodiment, the A-IoT reader 101 compares the received energy with the predefined threshold and upon successful detection of the received energy and demodulation of the backscattered signal, the A-IoT reader 101 associates the receive beam ID with the A-IoT device 102. In this method the association of the beam is based on the A-IoT device ID. According to another embodiment, the A-IoT reader 101 schedules the time and frequency resources and informs the A-IoT device 102 using a control signal and based on signal received in those resources, A-IoT reader 101 associate the beam ID with the A-IoT device 102. Beam sweeping at the A-IoT reader 101 depends on the energy harvesting time taken by the A-IoT device 102 and backscattering its signal. For e.g., the A-IoT device 102 takes tl’ time to harvest the energy and at time t2’ time backscatters the signal. Therefore, the beam should not change for the (tl ’+t2’) time during the beam sweeping procedure. If the A- loT device 102 has a variable energy harvesting time, then maximum time can be considered.

[0121] The following explanation explains the transmission of control information for CWN by A-IoT reader 101. The A-IoT reader 101 transmits the control signal to the CWN 103, which indicates the information related to the transmit beams for the A-IoT device 102. During the beam management procedure, the CWN 103 has to perform beam sweeping and transmit the carrier waves to the A-IoT device 102. Therefore, the A-IoT reader 101 indicates the beam sweeping pattern to the A-IoT device 102. In an embodiment, the control information may carry the information including (i) beam sweeping pattern to CWN 103 for communicating with the A-IoT device and/or the number of beams presents during beam sweeping and/or number of beams using which CWN should transmit to the A-IoT devices, (ii) the time instant at which each beam is active. E.g., beam bl is active in time tl, b2 is active in t2, etc., (iii) Time duration of each transmit beam, i.e., the time duration for which the CWN 103 should transmit CW using a beam and (iv) The periodicity with which the beam sweeping pattern is repeated.

[0122] The following explanation explains the transmission of control signal information for A-IoT device 102. In an embodiment, a control signal is used to multiplex the A-IoT devices in time or frequency resources, so that A-IoT reader 101 can identify the backscattered/transmitted signal from each A-IoT device. Also, it is essential for efficient beam management. This control signal transmitted by the A-IoT reader 101 to the A-IoT device 102 indicates the information related to the time and frequency resources in which the A-IoT device 102 is active, the behavior of A-IoT device 102 in each time and frequency resource, etc. The following explains the different configurations needed for the control signal and the content of the control signal.

[0123] The configuration of the control signal indicates the resources to monitor for the control signal by the A-IoT device 102, periodicity or pattern for monitoring, the size of control signal, etc. The following parameters can be provided in configuration for the control signal by the A-IoT reader 101. In one method, the A-IoT device 102 always monitors the control signal in its band of operation. The band of operation can be configured by the A-IoT reader 101 or dependent on the frequency response of the receiver circuit at the A-IoT device or same as the band in which the A-IoT device receives the trigger/query/synchronization signal during initial access/synchronization. Whenever the A-IoT device 102 detects the control signal during monitoring, the A-IoT device 102 demodulates the control signal. Based on the information contained in the control signal, the A-IoT device backscatters/transmits its signal to the A-IoT reader. In another method, the control signal can be monitored based on the configurations provided by the A-IoT reader 101. This configuration can be provided either in any down link message of the A-IoT reader 101 to the A-IoT device 102 during random access process or it can be given in any downlink message of the A-IoT reader 101 to the A-IoT device 102 after the random access process.

[0124] In an embodiment, the configuration can contain the one or more information about the control signal wherein the one or more information includes periodicity, duration of the control signal, offset, Center frequency, frequency band and monitoring pattern. The periodicity gives the predefined pattern in terms of the chip length/chip duration or any absolute time unit like microsecond/ milliseconds/seconds/slots/symbols etc. for monitoring the control signal by the A-IoT device. The duration for the control signal may be provided in terms of the chip length/chip duration or slots/symbols etc. The duration of the control signal indicates the number of chips/slot/ absolute time units /symbol where control signal is present. The offset may be provided by the A-IoT reader, and it indicates the time offset between the time at which configuration for monitoring the control is received and the first monitoring instant. The center frequency in which the A-IoT device should operate and search for the control signal. The frequency band provides the bandwidth in which the A-IoT device should operate or monitor for the control signal. This band can be the maximum bandwidth supported by the A-IoT device or a sub band within the maximum bandwidth. Further, a monitoring pattern can be configured to monitor the control signal, for e.g., start time of the pattern, duration of monitoring, periodicity of monitoring, duration of the pattern, number of repetitions of the pattern, periodicity to repeat the pattern, etc.

[0125] Further, the content of the control signal indicates the time or frequency resources for backscattering/transmitting signal by the A-IoT device, the mode of operation or behavior of the device in a particular instant of time, the configuration for certain procedure, etc. This control signal is transmitted by the A-IoT reader 101 to the A-IoT device 102 and is used for controlling and coordinating the operation of the A-IoT devices and also to multiplex multiple A-IoT devices. This control signal can be common to multiple A-IoT devices, or it can be device specific.

[0126] In an embodiment, one or more information carried by the control signal includes time resources, frequency resources, mode of operation, and type of operation. The time resource indicates the time instant for performing certain operations, e.g., backscattering, modulation, etc. The time resource can be provided in terms of offset, time index, a pattern, etc. The A-IoT device applies the offset, if provided, with respect to the time instant in which the control signal is received. In another method, the reference to apply offset is indicated along with the time resource. The offset can include slot offset and a symbol offset or the Offset can be defined in terms of absolute time units. The pattern comprises of start time, time duration to perform certain operation, periodicity with which the duration is getting repeated etc. The start time can indicate the start time of the pattern and also the start time of the first operating instant within a pattern. The frequency resource can be used by the reader to provide center frequency and bandwidth of operation to the A-IoT device. The frequency resource can be same for the DL and UL operations, or it can be different depending on the mode of operation. Also, it can provide the frequency shift that needs to be introduced by the device during backscattering.

[0127] Further, in the mode of operation, the reader 101 can inform the procedure or behavior of the A-IoT device 102 at a particular instant of time using the control information. E.g., A-IoT reader 101 can indicate the A-IoT device 102 whether the backscatter signal needs to be modulated or not. When an A-IoT device is participating in the beam management procedure for determining the best receive beam of the A-IoT reader to receive the signal from the A-IoT device, the A-IoT device can backscatter its signal without modulation, and it can just reflect back the received carrier wave to the A-IoT reader. The reflected carrier wave can be continuous waves with constant amplitude.

27 [0128] Further, in the type of operation or procedure, the control signal can indicate the time resource for a particular procedure to the A-IoT device. The behavior of the device for each procedure can be predefined. E.g., the Procedure indicates a certain time resource is for beam management or random access or data transmission. The A-IoT device is configured to backscatter without modulation of carrier wave during beam management and backscatter with modulation during data transmission. There can be a bit map which can indicate the type of the operation, or it can be some flag and based on that A-IoT can select its operation.

[0129] In the scenario, when gNB is connected to the A-IOT device via intermediate node. The intermediate node can be UE, NCR and relay etc. In this scenario, gNB transmits the control signal to the A-IOT reader, where the intermediate node can act as A-IoT reader. The Control signal information is same as the control signal information for CWN.

[0130] Fig. 5 illustrate an exemplary communication network, according to an embodiment of the present invention, in which the method of communication for resource management and beam management are implemented. The communication network comprises at least one first node (501), at least one second node (503) and at least one third node (502). In an embodiment, the at least one first node (501) and at least one second node (503) is one of reader, BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB). In yet another embodiment, the at least one device (502) is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device. In an example, the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

[0131] Various methods on resource management and beam management in the communication network will be elaborated in the forthcoming explanations in reference to Fig.

6 to Fig. 9.

[0132] Fig. 6 illustration a method (600) of communication in a cellular network for resource configuration, according to an embodiment of the present invention. [0133] The method (600) is implemented in a communication network comprises at least one first node (501), at least one second node (503) and at least one third node (502) as illustrated in Fig 5. In an embodiment, the at least one first node (501) and at least one second node (503) is one of reader, A-IoT reader, BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB). In yet another embodiment, the at least one device (502) is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device. In an example, the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

[0134] In Step 601, the at least one first node (501) configures at least one first resource and at least one second resource to least one second node (503), wherein the at least one first resource is allocated for performing a NR operation and the at least one second resource is allocated for performing an Ambient loT (A-IoT) operation.

[0135] In an embodiment, the NR operation is communication between the at least one first node (501) and the at least one second node (503), and the A-IoT operation is communication between the at least one second node (503) and at least one device (502). In an embodiment, the second node (503) is capable of acting as a A-IoT reader.

[0136] The first resource comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a number of frequency resources, a carrier frequency, identity of at least one bandwidth part and a bandwidth. The time is represented using at least one of a slot index, a number of slots, a symbol index and a number of symbols. Further, the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for the NR operation. Further, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0137] The second resource comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a carrier frequency, a number of frequency resources, at least one frequency shift, identity of at least one bandwidth part and a bandwidth. The time is represented using at least one of a slot index, a number of slots, a number of clock cycles, a symbol index and a number of symbols. The reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for NR operation configured in the at least one first resource. Further, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0138] In an embodiment, the at least one second resource comprises at least one of common information and device specific information for A-IoT operation. The at least one second resource may be a subset of the at least one first resource, wherein the at least one second resource is repeated periodically based on the periodicity of at least one first resource. In an embodiment, the at least one second resource comprises information about at least one of a serving area to perform the A-IoT operation, at least one device, type of the A-IoT operation, and a content of the first signal. The information about the type of A-IoT operation may comprises at least one of inventory, command, positioning, sensing, backscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation.

[0139] In an embodiment, the information about the content of the first signal comprises at least one of an identity of the at least one device that is active, a number of the at least one device that is active, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device. Further, the information about the serving area to perform A-IoT operation comprises a beam configuration, wherein the beam configuration comprises one of an identity of at least one beam of the at least one second node and an identity of at least one reference signal configured to the at least one second node.

[0140] In Step 602, the at least one first node (501) receives a first signal from the at least one second node (503) in at least one first resource, wherein the first signal comprises one of at least one information about A-IoT operation or NR data and at least one information about A-IoT operation. In an embodiment, the first signal may be received in at least one of a physical uplink shared channel and a physical uplink control channel. In an embodiment, the at least one information about A-IoT operation comprises at least one of a status of the at least one device, at least one information stored in the at least one device, and at least one identity of the at least one device, and at least one value measured by the at least one device. In a further embodiment, the at least one information about A-IoT operation is multiplexed with information about the NR operation using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing.

[0141] In an embodiment, the method (600) further comprises transmitting an indication to the at least one second node (503) for performing the A-IoT operation.

[0142] Fig. 7 illustration a method (700) of communication in a cellular network, according to another embodiment of the present invention. The method (700) is implemented in a communication network comprises at least one first node (501), at least one second node (503) and at least one third node (502) as illustrated in Fig 5. In an embodiment, the at least one first node (501) and at least one second node (503) is one of reader, BS, UE, network- controlled repeater (NCR), integrated access and backhaul (IAB). In yet another embodiment, the at least one device (502) is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device. In an example, the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

[0143] In Step 701, the at least one second node (503) receives from at least one first node (501), at least one first resource configuration and at least one second resource configuration, wherein the at least one first resource configuration is for performing a NR operation and the at least one second resource configuration is for performing an Ambient loT (A-IoT) operation.

[0144] In an embodiment, the NR operation is communication between the at least one first node (501) and the at least one second node (503). In a further embodiment, the A-IoT operation is communication between the at least one second node and at least one device (502).

[0145] The at least one first resource configuration comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a number of frequency resources, a carrier frequency, identity of at least one bandwidth part and a bandwidth. The time may be represented using at least one of a slot index, number of slots, a symbol index and a number of symbols. In an embodiment, the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for the NR operation. Further, the frequency resource may be represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0146] In an embodiment, the at least one second node (503) performs transmission to the at least one first node (501) in at least one of a physical uplink shared channel and a physical uplink control channel. In an embodiment, the at least one second resource configuration comprises at least one of common information and device specific information for A-IoT operation. Further, the at least one second node (503) is capable of acting as a A-IoT reader.

[0147] In an embodiment, the at least one second resource configuration is a subset of the resources configured in the at least one first resource configuration. The at least one second resource configured is repeated periodically based on the periodicity of at least one resources configured in the at least one first resource configuration. Further, the at least one second resource configuration comprises information about at least one of a serving area to perform A-IoT operation, at least one A-IoT device, type of A-IoT operation, and a content of the first signal.

[0148] In an embodiment, the information about the type of A-IoT operation comprises at least one of inventory, command, positioning, sensing, backscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation. In an embodiment, the information about the content of the first signal comprises at least one of an identity of the at least one device that is active, a number of the at least one device that is active, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device. In an embodiment, the information about the serving area to perform A-IoT operation comprises a beam configuration.

[0149] In a further embodiment, the beam configuration comprises one of an identity of at least one beam of the at least one second node and an identity of at least one reference signal configured to the at least one second node. [0150] In Step 702, the at least one second node (503) transmits a second signal to at least one device (502) in at least one resource indicated in the at least one second resource configuration, wherein second signal comprises at least one of a carrier wave, at least one scheduling for UL transmission and at least one scheduling for DL reception. In an embodiment, the transmission of the second signal is in at least one resource scheduled for a trigger signal for triggering the at least one device to start the A-IoT operation. The second signal may comprise one of a broadcast information and a device specific information. In a further embodiment, the transmitting the second signal comprises at least one of transmission of a synchronization signal, transmission of a trigger signal for triggering the at least one device to start the A-IoT operation, an indication to perform modulation, at least one device ID, an information about a content of the third signal and an indication of type of A-IoT operation. The indication of type of A-IoT operation may comprises at least one of inventory, command, positioning, sensing, backscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation.

[0151] Further, the information about the content of the third signal may comprises at least one of an identity of the at least one device, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device.

[0152] In an embodiment, the at least one of the at least one scheduling for UL transmission, the at least one scheduling for DL reception and at least second resource configuration comprises at least one of: a time offset, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a reference time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resource, a bandwidth, an identity of at least one bandwidth part, at least one frequency shift, a carrier frequency, and a subcarrier spacing.

[0153] In an embodiment, the time is represented using at least one of a slot index, number of slots, a symbol index and a number of symbols. In a further embodiment, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers. Further, the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for NR operation configured in the at least one first resource configuration. In an embodiment, the second signal comprises at least one monitoring pattern for at least one subsequent downlink reception for the at least one device, wherein the at least one monitoring pattern comprises at least one of a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a reference time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resource, a bandwidth, an identity of at least one bandwidth part, at least one frequency shift, a carrier frequency, and a subcarrier spacing.

[0154] In an embodiment, the time is represented using at least one of a slot index, number of slots, a symbol index and a number of symbols. In a further embodiment, the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

[0155] In Step 703, the at least one second node (503) receives a third signal from the at least one device (502) based on the second signal, wherein the third signal comprises at least one identity of the at least one device (502). The reception of the third signal may be in at least one resource scheduled for the transmission of the second signal. Further, the third signal comprises at least one of a modulated carrier wave, an unmodulated carrier wave, at least one information stored in the at least one device, and at least one value measured by at least one device. Further, the one of the second signal and the third signal may be multiplexed using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing based on the second signal.

[0156] The method (700) further comprises receiving an indication from the at least one first node (501) for performing the A-IoT operation. In Step 704, the at least one second node (503) transmits one of at least one information about Ambient loT (A-IoT) operation or NR data and at least one information about A-IoT operation based on the at least one first resource configuration. In an embodiment the at least one information about A-IoT operation comprises at least one of a status of the at least one device, at least one identity of at least one device, at least one information stored in the at least one device, and at least one value measured by the at least one device. In an embodiment, the at least one information about the A-IoT operation is multiplexed with information about the NR operation using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing.

[0157] In an embodiment, one of at least one first node (501) and at least one second node (503) is one of reader, BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB). In a further embodiment, the device (503) is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device. The Ambient loT device may be a tag, which is attached to any one of a passive device, an active device and a sensor.

[0158] Fig. 8 illustration a method of communication in a cellular network for beam management, according to yet another embodiment of the present invention. The method (800) is implemented in a communication network comprises at least one first node (501), at least one second node (503) and at least one third node (502) as illustrated in Fig 5. In an embodiment, the at least one first node (501) and at least one second node (503) is one of reader, BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB). In yet another embodiment, the at least one device (502) is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device. In an example, the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

[0159] In Step 801, transmitting, by a reader transmits a fourth signal in at least one transmit beam from plurality of transmit beams, wherein the fourth signal comprises a control information. In an embodiment, transmitting the fourth signal comprises transmitting a carrier wave. In an embodiment, the at least one first beam is at least one of at least one beam from the at least one transmission beam of reader, at least one beam indicated in a control information for the CWN. In an embodiment, the control information comprises a scheduling information to perform at least one of transmission of a carrier wave, transmission of the fifth signal, backscattering of fifth signal, and reception of a signal.

[0160] In a further embodiment, the control information further comprises at least one of backscattering with modulation, backscattering without modulation, transmission with modulation, transmission without modulation and, indication to perform at least one of inventory, command, positioning and sensing. The scheduling information may comprise at least one of at least one resource to transmit a carrier wave at least one beam configuration, a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resources, at least one frequency shift, a frequency of the carrier wave, bandwidth, and a subcarrier spacing. The at least one beam configuration comprises at least one at least one beam sweeping pattern. The at least one beam sweeping pattern comprises at least one of at least one beam ID, at least one time resource where at least one beam ID is active, and the periodicity with which the at least one beam ID is active. Further, the at least one beam sweeping pattern is based on the at least one of time duration for performing the energy harvesting and time duration for performing the backscattering by the at least one device.

[0161] In Step 802, the reader receives a fifth signal in at least one receive beam from plurality of receive beams, wherein the received power of the fifth signal is measured on the beam that is associated with at least one device ID. In an embodiment, the power of the fifth signal received exceeds one of a predefined threshold value and a preconfigured threshold value. In an embodiment, the at least one device ID is at least one of received in the fifth signal, determined based on the scheduling of the fifth signal, and determined based on at least one of a time resource and a frequency resource in which the fifth signal is received. In an embodiment, the fifth signal comprises at least one of the at least one device ID, a feedback, at least one information stored in the at least device, and at least one value measured by at least one device.

[0162] In Step 803, a beam from the at least one receive beam is associated with at least one of at least one device ID and at least one first beam, based on the received power of the fifth signal. The reader may be one of BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB). The device (502) may be one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device. The Ambient loT device may be a tag, which is attached to any one of a passive device, an active device and a sensor.

[0163] Fig. 9 illustration a method of communication implemented by carrier wave node in a cellular network, according to another embodiment of the present invention. The method (900) is implemented in a communication network comprises at least one first node (501), at least one second node (503) and at least one third node (502) as illustrated in Fig 5. In an embodiment, the at least one first node (501) and at least one second node (503) is one of reader, BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB). In yet another embodiment, the at least one device (502) is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device. In an example, the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

[0164] In Step 901, the carrier wave node (CWN) (503) receives a control signal, wherein the control signal comprises an indication to at least one of transmitting at least one carrier wave and at least one beam for transmitting the carrier wave (CW). In an embodiment, the control signal comprises scheduling information to perform at least one of transmission of the CW and reception of the sixth signal. The scheduling information comprises at least one of at least one resource to transmit a carrier wave, at least one beam configuration, a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resource, a bandwidth, a frequency of CW, and a subcarrier spacing.

[0165] In an embodiment, the at least one beam configuration comprises at least one of at least one beam sweeping pattern, wherein the at least one beam sweeping pattern comprises at least one of at least one beam ID, at least one time resource where at least one beam ID is active, and the periodicity with which the at least one beam ID is active. Further, the at least one beam sweeping pattern is based on the at least one of time duration for performing the energy harvesting and time duration for performing the backscattering by the at least one device.

[0166] In Step 902, the CWN (503) transmits a CW based on the control signal.

[0167] In Step 903, the CWN (503) receives a sixth signal, wherein the sixth signal comprises at least one device ID and a beam associated with the at least one device ID.

[0168] In the above detailed description, reference is made to the accompanying drawings that form a part thereof, and illustrate the best mode presently contemplated for carrying out the invention. However, such description should not be considered as any limitation of scope of the present invention. The structure thus conceived in the present description is susceptible of numerous modifications and variations, all the details may furthermore be replaced with elements having technical equivalence.

38

Claims

We Claim:

1. A method of communication in a cellular network, wherein the method comprises: configuring, by a at least one first node, at least one first resource and at least one second resource to at least one second node wherein the at least one first resource is allocated for performing a NR operation and the at least one second resource is allocated for performing an Ambient loT (A-IoT) operation; and receiving, by the at least one first node, a first signal from the at least one second node in at least one first resource, wherein the first signal comprises one of at least one information about A-IoT operation or NR data and at least one information about A-IoT operation.

2. The method as claimed in claim 1, wherein the NR operation is communication between the at least one first node and the at least one second node.

3. The method as claimed in claim 1, wherein the A-IoT operation is communication between the at least one second node and at least one device.

4. The method as claimed in claim 1, wherein the at least one first resource comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a number of frequency resources, a carrier frequency, identity of at least one bandwidth part and a bandwidth.

5. The method as claimed in claim 4, wherein the time is represented using at least one of a slot index, a number of slots, a symbol index and a number of symbols.

6. The method as claimed in claim 4, wherein the reference time is obtained using the one of: start of a frame, start of a slot and TDD configuration period for the NR operation.

39

7. The method as claimed in claim 4, wherein the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

8. The method as claimed in claim 1, wherein the first signal is received in at least one of a physical uplink shared channel and a physical uplink control channel.

9. The method as claimed in claim 1, wherein the at least one information about A-IoT operation comprises at least one of: a status of the at least one device, at least one identity of the at least one device, at least one information stored in the at least one device, and at least one value measured by the at least one device.

10. The method as claimed in claim 1, wherein the at least one information about A-IoT operation is multiplexed with information about the NR operation using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing.

11. The method as claimed in claim 1, wherein the at least one second resource comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a carrier frequency, a number of frequency resources, at least one frequency shift, identity of at least one bandwidth part and a bandwidth.

12. The method as claimed in claim 11, wherein the time is represented using at least one of a slot index, a number of slots, a number of clock cycles, a symbol index and a number of symbols.

13. The method as claimed in claim 11, wherein the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for NR operation configured in the at least one first resource.

14. The method as claimed in claim 11, wherein the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

15. The method as claimed in claim 1, wherein the at least one second resource comprises at least one of common information and device specific information for A-IoT operation.

16. The method as claimed in claim 1, wherein the at least one second node is capable of acting as an A-IoT reader.

17. The method as claimed in claim 1, further comprises transmitting an indication to the at least one second node for performing the A-IoT operation.

18. The method as claimed in claim 1, wherein the at least one second resource is a subset of the at least one first resource.

19. The method as claimed in claim 18, wherein the at least one second resource is repeated periodically based on the periodicity of at least one first resource.

20. The method as claimed in claim 1, wherein the at least one second resource comprises information about at least one of a serving area to perform the A-IoT operation, at least one device, a type of the A-IoT operation, and a content of the first signal.

21. The method as claimed in claim 20, wherein the information about the type of A-IoT operation comprises at least one of inventory, command, positioning, sensing, b ackscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation.

22. The method as claimed in claim 20, wherein the information about the content of the first signal comprises at least one of an identity of the at least one device that is active, a number of the at least one device that is active, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device.

23. The method as claimed in claim 20, wherein the information about the serving area to perform A-IoT operation comprises a beam configuration.

24. The method as claimed in claim 23, wherein the beam configuration comprises one of: an identity of at least one beam of the at least one second node and an identity of at least one reference signal configured to the at least one second node.

25. The method as claimed in claim 1, wherein one of at least one first node and at least one second node is one of reader, A-IoT reader, BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB).

26. The method as claimed in claim 1, wherein the device is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device.

27. The method as claimed in claim 26, wherein the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

28. A method of communication in a cellular network, wherein the method comprises: receiving by at least one second node from at least one first node, at least one first resource configuration and at least one second resource configuration, wherein the at least one first resource configuration is for performing a NR operation and the at least one second resource configuration is for performing an Ambient loT (A-IoT) operation; transmitting by the at least one second node, a second signal to at least one device in at least one resource indicated in the at least one second resource configuration, wherein second signal comprises at least one of a carrier wave, at least one scheduling for UL transmission and at least one scheduling for DL reception; receiving by the at least one second node, a third signal from the at least one device based on the second signal, wherein the third signal comprises at least one identity of the at least one device; and transmitting by the second node, one of at least one information about the A-IoT operation or NR data and at least one information about A-IoT operation based on the at least one first resource configuration.

29. The method as claimed in claim 28, wherein the reception of the third signal is in at least one resource scheduled for the transmission of the second signal.

30. The method as claimed in claim 28, wherein the transmission of the second signal is in at least one resource scheduled for a trigger signal for triggering the at least one device to start the A-IoT operation.

31. The method as claimed in claim 28, wherein the NR operation is communication between the at least one first node and the at least one second node.

32. The method as claimed in claim 28, wherein the A-IoT operation is communication between the at least one second node and at least one device.

33. The method as claimed in claim 28, wherein the at least one first resource configuration comprises at least one of a start time, an end time, a reference time, at least one periodicity, a time duration, a number of time units, a subcarrier spacing, a starting frequency resource, an ending frequency resource, a number of frequency resources, a carrier frequency, identity of at least one bandwidth part and a bandwidth.

34. The method as claimed in claim 33, wherein the time is represented using at least one of a slot index, a number of slots, a symbol index and a number of symbols.

35. The method as claimed in claim 33, wherein the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for the NR operation.

36. The method as claimed in claim 33, wherein the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

37. The method as claimed in claim 28, wherein the transmission by the at least one second node to the at least one first node in at least one of a physical uplink shared channel and a physical uplink control channel.

38. The method as claimed in claim 28, wherein the second signal comprises one of a broadcast information and a device specific information.

39. The method as claimed in claim 28, wherein the transmitting the second signal comprises at least one of transmission of a synchronization signal, transmission of a trigger signal for triggering the at least one device to start the A-IoT operation, an indication to perform modulation, at least one device ID, an information about a content of the third signal and an indication of type of A-IoT operation.

40. The method as claimed in claim 39, wherein the indication of type of A-IoT operation comprises at least one of inventory, command, positioning, sensing, backscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation.

41. The method as claimed in claim 39, wherein the information about the content of the third signal comprises at least one of an identity of the at least one device, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device.

42. The method as claimed in claim 28, wherein the at least one of the at least one scheduling for UL transmission, the at least one scheduling for DL reception and at least second resource configuration comprises at least one of: a time offset, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a reference time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resources, a bandwidth, an identity of at least one bandwidth part, at least one frequency shift, a carrier frequency, and a subcarrier spacing.

43. The method as claimed in claim 42, wherein the time is represented using at least one of a slot index, number of slots, a symbol index and a number of symbols.

44. The method as claimed in claim 42, wherein the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

45. The method as claimed in claim 42, wherein the reference time is obtained using the one of start of a frame, start of a slot and TDD configuration period for NR operation configured in the at least one first resource configuration.

46. The method as claimed in claim 28, wherein the at least one information about A-IoT operation comprises at least one of a status of the at least one device, at least one identity of at least one device, at least one information stored in the at least one device, and at least one value measured by the at least one device.

47. The method as claimed in claim 28, wherein the at least one information about the A-IoT operation is multiplexed with information about the NR operation using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing.

48. The method as claimed in claim 28, wherein the at least one second configuration comprises at least one of common information and device specific information for A-IoT operation.

49. The method as claimed in claim 28, wherein the third signal comprises at least one of a modulated carrier wave, an unmodulated carrier wave, at least one information stored in the at least one device, and at least one value measured by at least one device.

50. The method as claimed in claim 28, wherein the one of the second signal and third signal is multiplexed using at least one of frequency division multiplexing, time division multiplexing and code division multiplexing based on the second signal.

51. The method as claimed in claim 28, wherein the second signal comprises at least one monitoring pattern for at least one subsequent downlink reception for the at least one device.

52. The method as claimed in claim 51, wherein the at least one monitoring pattern comprises at least one of: a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a reference time, a number of time units,

46 a transmit power, a start frequency resource, an end frequency resource, a number of frequency resources, a bandwidth, an identity of at least one bandwidth part, at least one frequency shift, a carrier frequency, and a subcarrier spacing.

53. The method as claimed in claim 52, wherein the time is represented using at least one of a slot index, a number of slots, a symbol index and a number of symbols.

54. The method as claimed in claim 52, wherein the frequency resource is represented using at least one of a resource block index, a number of resources blocks, a subcarrier index, identity of at least one bandwidth part and a number of subcarriers.

55. The method as claimed in claim 28, wherein the at least one second node is capable of acting as a A-IoT reader.

56. The method as claimed in claim 28, further comprises receiving an indication from the at least one first node for performing the A-IoT operation.

57. The method as claimed in claim 28, wherein the at least one second resource configured is a subset of the at least one resource configured in the at least one first resource configuration.

58. The method as claimed in claim 57, wherein the at least one second resource configured is repeated periodically based on the periodicity of at least one resource configured in the at least one first resource configuration.

59. The method as claimed in claim 28, wherein the at least one second resource configuration comprises information about at least one of a serving area to perform A-IoT operation, at least one device, a type of A-IoT operation, and a content of the first signal.

60. The method as claimed in claim 59, wherein the information about the type of A-IoT operation comprises at least one of inventory, command, positioning, sensing, backscattering with modulation, backscattering without modulation, transmission with modulation and transmission without modulation.

61. The method as claimed in claim 59, wherein the information about the content of the first signal comprises at least one of an identity of the at least one device that is active, a number of the at least one device that is active, an energy status of the at least one device, an information stored in the at least one device, and at least one value measured by the at least one device.

62. The method as claimed in claim 59, wherein the information about the serving area to perform A-IoT operation comprises a beam configuration.

63. The method as claimed in claim 62, wherein the beam configuration comprises one of an identity of at least one beam of the at least one second node and an identity of at least one reference signal configured to the at least one second node.

64. The method as claimed in claim 28, wherein one of at least one first node and at least one second node is one of reader, A-IoT reader, BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB).

65. The method as claimed in claim 28, wherein the device is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device.

66. The method as claimed in claim 65, wherein the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

67. A method of communication in a cellular network, wherein the method comprises: transmitting, by a reader, a fourth signal in at least one transmit beam from plurality of transmit beams, wherein the fourth signal comprises a control information; receiving, by the reader, a fifth signal in at least one receive beam from plurality of receive beams; and associating a beam from the at least one receive beam with at least one of at least one device ID and at least one first beam, based on the received power of the fifth signal.

68. The method as claimed in claim 67, wherein the received power of the fifth signal is measured the beam that is associated with at least one device ID.

69. The method as claimed in claim 67, wherein the power of the fifth signal received exceeds one of a predefined threshold value and a preconfigured threshold value.

70. The method as claimed in claim 67, wherein the at least one device ID is at least one of received in the fifth signal, determined based on the scheduling of the fifth signal, and determined based on at least one of a time resource and a frequency resource in which the fifth signal is received.

71. The method as claimed in claim 67, wherein transmitting the fourth signal comprises transmitting a carrier wave.

72. The method as claimed in claim 67, wherein the at least one first beam is at least one of at least one beam from the at least one transmission beam of reader at least one beam indicated in a control information for the CWN.

73. The method as claimed in claim 67, wherein the fifth signal comprises at least one of the at least one device ID, a feedback, at least one information stored in the at least one device, and at least one value measured by at least one device.

74. The method as claimed in claim 67, wherein the control information comprises a scheduling information to perform at least one of transmission of a carrier wave, transmission of the fifth signal, backscattering of fifth signal, and reception of a signal.

75. The method as claimed in claim 74, wherein the control information further comprises at least one of : backscattering with modulation, backscattering without modulation, transmission with modulation, transmission without modulation and, indication to perform at least one of inventory, command, positioning and sensing,

76. The method as claimed in claim 74, wherein the scheduling information comprises at least one of: at least one resource to transmit a carrier wave at least one beam configuration, a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resources,

50 at least one frequency shift, a frequency of the carrier wave, bandwidth, and a subcarrier spacing.

77. The method as claimed in claim 76, wherein the at least one beam configuration comprises at least one at least one beam sweeping pattern.,

78. The method as claimed in claim 77, wherein the at least one beam sweeping pattern comprises at least one of at least one beam ID, at least one time resource where at least one beam ID is active, and the periodicity with which the at least one beam ID is active.

79. The method as claimed in claim 77, wherein the at least one beam sweeping pattern is based on the at least one of time duration for performing the energy harvesting and time duration for performing the backscattering by the at least one device.

80. The method as claimed in claim 67, wherein reader is one of BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB).

81. The method as claimed in claim 67, wherein the device is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device.

82. The method as claimed in claim 81, wherein the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

83. A method of communication in a cellular network, wherein the method comprises: receiving, by the carrier wave node (CWN), a control signal, wherein the control signal comprises an indication to at least one of transmitting at least one carrier wave and at least one beam for transmitting the carrier wave (CW); transmitting, by the CWN, a CW based on the control signal; and receiving, by the CWN, a sixth signal wherein the sixth signal comprises at least one device ID and a beam associated with the at least one device ID.

84. The method as claimed in claim 83, wherein the control signal comprises scheduling information to perform at least one of transmission of the CW and reception of the sixth signal.

85. The method as claimed in claim 84, wherein the scheduling information comprises at least one of: at least one resource to transmit a carrier wave, at least one beam configuration, a time offset, a number of repetitions, at least one periodicity, a number of clock cycles, a number of symbols, a start time, an end time, a number of time units, a transmit power, a start frequency resource, an end frequency resource, a number of frequency resources, a bandwidth, a frequency of CW, and a subcarrier spacing.

86. The method as claimed in claim 85, wherein the at least one beam configuration comprises at least one of at least one beam sweeping pattern.

87. The method as claimed in claim 86, wherein the at least one beam sweeping pattern comprises at least one of at least one beam ID, at least one time resource where at least one beam ID is active, and the periodicity with which the at least one beam ID is active.

88. The method as claimed in claim 86, wherein the at least one beam sweeping pattern is based on the at least one of time duration for performing the energy harvesting and time duration for performing the backscattering by the at least one device.

89. The method as claimed in claim 83, wherein CWN is one of BS, UE, network-controlled repeater (NCR), integrated access and backhaul (IAB).

90. The method as claimed in claim 83, wherein the device is one of BS, UE, Ambient loT device, NCR, IAB, carrier wave node, non-RF device or active RF device.

91. The method as claimed in claim 90, wherein the Ambient loT device is a tag, which is attached to any one of a passive device, an active device and a sensor.

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