A method for on-demand transmission of signals

Abstract

The present disclosure provides a method for on demand transmission of signals. The disclosure describes methods to transmit SIB1 based on request from a node in the network. The invention further describes the configurations and signalling exchanges required for the transmission of the request. Also, the invention describes the impact of on-demand SIB1 on existing procedures in cellular network and methods to mitigate the impact.

Description

A METHOD FOR ON-DEMAND TRANSMISSION OF SIGNALSTECHNICAL FIELD

[0001] The present disclosure relates to a method for on-demand transmission of signals. More particularly, the present disclosure provides a method for performing on-demand transmission of signals upon transmission of a wakeup signal.BACKGROUND

[0002] Network energy saving is a critical factor that needs to be considered to reduce overall operating costs of a cellular network and to make the network compatible with green deployment. The major component of energy consumed in a network comes from the base station (BS), a.k.a gNB. The BS has to perform transmission / reception to serve the user equipment (UE) connected to it and certain mandatory set of downlinks (DL) operations, such as periodic transmission of synchronization signal block (SSB) that contains primary synchronization signal (PSS), secondary synchronization signal (SSS) and Master information block (MIB), and system information block 1 (SIB 1) to enable access for new UEs entering the system. These mandatory set of operations consume energy even if the BS is not serving any UE or if no new UEs entering the network. Therefore, an adaptation of these mandatory operations to be performed based on network parameters and operations will help to reduce energy consumption by a BS.

[0003] In fifth generation (5G) new radio (NR) technology, the UE uses SSB to achieve DL synchronization, and to get essential information about the cell / sector. The MIB in SSB provide information about the SSB received and configuration for a set of time and frequency resources, a. k. a. control resource set (CORESETO), to monitor for further control information from the BS. The SSB and CORESETO can be multiplexed in one of the following manner:• Multiplexing pattern 1 : time division duplexing (TDD) between SSB and CORESETO. Here, SSB and CORESETO locations are separated in a time domain.• Multiplexing pattern 2: TDD and frequency division duplexing (FDD) between SSB and CORESETO.• Multiplexing pattern 3: FDD between SSB and CORESETO.

[0004] The BS transmits downlink control information (DCI) within the CORESETO and schedule SIB1. The SIB1 carries configurations for the UE to access the cell, like parametersto perform random access procedures for achieving UL synchronization, initial resource configurations, time domain duplexing (TDD) pattern, etc. The SIB1 also includes information regarding the availability and scheduling of other SIBs like transmission patterns of other SIBs, RACH configurations for requesting other SIBs, periodicity for other SIB, etc. Further, SIB1 contains cell-barring information applied to unified access control.

[0005] Random access channel (RACH) procedure is the first step when a UE want to enter the network or connect to the network for the first time or after a period of inactivity. In general, the RACH procedure comprises of a UE randomly selecting a random-access preamble from a pool of configured preambles and transmitting the selected preamble to the BS in certain timefrequency resources, a.k.a, RACH occasion (RO). The pool of preambles and the timefrequency resources are determined by the UE based on RACH configuration provided in SIB1 and the measurement using SSBs by the UE. Using the RO in which preamble is received, the BS determine information about the SSB beam selected by the UE, the propagation delay, timing alignment of the UE, etc. and sends a random-access response (RAR) to the UE. The RAR contains information for time synchronization, identity of UE, scheduling for further processes, information for contention resolution etc.

[0006] Currently, the SIB1 is transmitted periodically in DL data channel and the periodicity depends on the SSB periodicity and multiplexing pattern between SSB and CORESETO. E.g., for multiplexing pattern 1, the periodicity for SIB 1 is predefined as 20 ms. Similarly, for multiplexing patterns 2 and 3, the SIB1 has a periodicity equals to the periodicity of the SSB. The SIB1 is transmitted periodically to help a new UE trying to connect to the network. Therefore, the SIB is used only if at least one UE tries to latch on to the network. If there is no UE measuring SSB and trying to connect to the network, then the transmitted SIB1 remain unused. Further, the frequent transmissions of SIB1 by the BS results in smaller sleep duration for BS even in no load conditions. Therefore, transmitting SIB1 periodically is not an efficient method, especially from energy consumption point of view of BS.

[0007] Thus, there is a need to provide a methodology to avoid unnecessary transmissions of SIB I .SUMMARY OF THE INVENTION

[0008] In general, embodiments of the present disclosure herein provide a method for on- demand transmission of signals. Other implementations will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional implementations be included within this description be within the scope of the disclosure.

[0009] According to one embodiment, the present invention provides a method for on- demand transmission of signals is disclosed. The method includes transmitting, by at least one first node, at least one synchronization signal block (SSB). The method further includes receiving, by the at least one first node, a wake-up signal (WUS) for transmitting at least one system information block 1 (SIB1). The method further includes transmitting, by the at least one first node, at least one of at least one first DCI and an RAR in response to the WUS signal. The method further includes transmitting, by the at least one first node, at least one second DCI comprising scheduling information of the at least one SIB1. Further, the method includes transmitting by the at least one first node, the at least one SIB1.

[0010] According to one embodiment, a method of transmitting a Wake-Up Signal (WUS) configuration by a node in a communication network is disclosed. The method comprising transmitting, by at least one first node, at least one WUS configuration to at least one second node, wherein the at least one WUS configuration comprises at least one of a threshold value, a timing advance offset, at least one cell ID, a root sequence index, SSB block power, a parameter indicating at least one of number and positions of the at least one SSB in a SSB burst, a PreambleConfiglndex, a RACH preamble, an RACH occasion and starting position of WUS in the frequency.

[0011] According to one embodiment, a method for transmitting of an on demand system information block 1 (SIB1) is disclosed. The method comprises transmitting, by at least first node, at least one SSB. Further, the method comprises splitting, by at least first node, at least one SIB1 into first part and second part. Further, the method comprises transmitting, by the at least first node, at least one first DCI comprising the scheduling information of a first part of the at least one SIB 1. Further, the method comprises transmitting, by the at least first node, the first part. Further, the method comprises receiving, by the at least one first node, a wake-up signal (WUS) for transmitting at least one SIB1. Further, the method comprises transmitting, by the at least one first node, at least one of at least one second DCI and an RAR in responseto the WUS signal. Further, the method comprises transmitting, by the at least one first node, at least one third DCI comprising scheduling information of the second part of the at least one SIB 1. Further, the method comprises transmitting by the at least one first node, the second part.

[0012] The above summary is provided merely for the purpose of summarizing some example embodiments to provide a basic understanding of some aspects of the present disclosure. Accordingly, it will be appreciated that the above-described embodiments are merely examples and should not be construed to narrow the scope or spirit of the present disclosure in any way.

[0013] It will be appreciated that the scope of the present disclosure encompasses many potential embodiments in addition to those here summarized, some of which will be further described below. Other features, aspects, and advantages of the subject will become apparent from the description, the drawings, and the claims.BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constitute a part of the description and are used to provide further understanding of the present disclosure. Such accompanying drawings illustrate the embodiments of the present disclosure which are used to describe the principles of the present disclosure.

[0015] FIG. 1 illustrates a time frequency resources for WUS, according to an embodiment of the present disclosure.

[0016] FIG. 2 illustrates WUS retransmissions within the periodic timer T2, according to an embodiment of the present disclosure.

[0017] FIG. 3 illustrates association of predefined WUS sequences with the available SSB beams.

[0018] FIG. 4 illustrates a method 400 for method for on-demand transmission of signals, according to an embodiment of the present disclosure. In an embodiment, the method 400 is implemented in at least one first node.

[0019] FIG. 5 illustrates a method 500 for transmitting a Wake-Up Signal (WUS) configuration by a node in a communication network, according to an embodiment of the present disclosure.

[0020] FIG. 6 illustrates another method 600 for on-demand transmission of signals, according to an embodiment of the present disclosure. In an embodiment, the method 600 is implemented in at least one first node.

[0021] FIG. 7 illustrates a method 700 for on-demand transmission of signals, according to an embodiment of the present disclosure.

[0022] FIG. 8 illustrates a method 800 for on-demand transmission of signals, according to an embodiment of the present disclosure.

[0023] Fig. 9 illustrates a general architecture of the first node / second node for implementation, in accordance with an embodiment of the present invention.

[0024] The embodiments are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment and they mean at least one.DETAILED DESCRIPTION OF THE INVENTION

[0025] Some embodiments of the present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all, embodiments of the disclosure are shown. Indeed, embodiments of the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.

[0026] As used herein, the term “comprising” means including but not limited to and should be interpreted in the manner it is typically used in the patent context. Use of broader terms such as comprises, includes, and having should be understood to provide support for narrower terms such as consisting of, consisting essentially of, and comprised substantially of.

[0027] The phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” and the like generally mean that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure, and may be included in more than one embodiment of the present disclosure (importantly, such phrases do not necessarily refer to the same embodiment).

[0028] The word “example” or “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other implementations.

[0029] The present disclosure provides a method to transmit SIB 1 based on need or request from a node in the network, a. k. a. on-demand SIB1 to avoid unnecessary transmissions of SIB1. The present disclosure further describes various configurations required for requesting SIB1 transmissions and the methods of signalling them to the UEs. Further, the present disclosure describes the impact of on-demand SIB 1 on existing procedures in a cellular network and methods to overcome or minimize the impact.

[0030] According to an embodiment, during an on-demand SIB1 transmission, the BS transmits SSB periodically and the UE performs measurements on SSB and based on certain predefined conditions request transmission of SIB1 by transmitting a wake up signal (WUS). In an embodiment, the SIB1 is transmitted once the request is received by the BS from the UE. Using the on demand SIB1, the following methods are adopted for the initial access procedure.

[0031] According to an embodiment, in one method, the initial access procedure comprises a SSB transmission, a WUS reception, transmission of DCI to schedule SIB1, transmission of SIB1 and RACH procedure by the BS. In this case, the SSB contains the scheduling information for the WUS. In an embodiment, a WUS configuration can be provided in MIB. In this case, a separate processing such as channel coding, CRC, rate matching etc., can be done for legacy MIB contents and contents of WUS configuration. According to an embodiment, the UE receives SSB, performs DL synchronization, measure various parameters, determines the scheduling information for the WUS and transmits the WUS. Therefore, the size of SSB may increase to incorporate scheduling information for the WUS.

[0032] According to some embodiment, in another method, the initial access procedure comprises of SSB transmission, transmission of DCI(s) to schedule WUS and SIB1, reception of WUS, transmission of SIB1 and RACH procedure by the BS. In this case, the scheduling of WUS comes in DCI. In an embodiment, the DCI is same as DCI format 1 0 scheduling SIB1 in NR or it can be separate and different DCI format. In the former case, the same DCI schedule UL and DL at UE, whereas in the latter case a separate configuration may be required. The SSB configures to the UE with the time and frequency resources to monitor for DCI. The timeand frequency resources can be same or different in case of separate DCI scheduling WUS and SIB1. Further, in the case of a separate DCI format for scheduling SIB1, a new scrambling ID can be defined (e.g., WUS-RNTI).

[0033] According to some embodiment, in yet another method, the initial access procedure comprises of SSB transmission, transmission of DCI to schedule WUS, reception of WUS, transmission of DCI to schedule SIB1, transmission of SIB1 and RACH procedure by the BS. Similar to the previous method, here also the SSB configures the UE with the time and frequency resources to monitor for DCI scheduling WUS (e.g., CORESET). Further, the DCI scheduling WUS can be scrambled by a new ID (e.g., WUS-RNTI).

[0034] According to some embodiment, in yet another method, the content of SIB 1 can be divided into two parts, where the first part comprises of the configuration needed for the transmission of the RACH preamble. The RACH preamble can act as WUS for transmitting the second part of SIB1. For example, the initial access procedure comprises of SSB transmission, transmission of DCI to schedule first part of SIB1, transmission of first part of SIB1, reception of RACH preamble as WUS, transmission of DCI to schedule second part of SIB1 and RAR, transmission of second part of SIB1 and RAR, reception of RAR response and contention resolution by the BS. In another example, the initial access procedure comprises of SSB transmission, transmission of DCI to schedule first part of SIB1, transmission of first part of SIB1, reception of RACH preamble as WUS, transmission of second part of SIB1 and RAR, reception of RAR response and contention resolution by the BS. The second part of SIB1 is transmitted using the scheduling information contained in the first part of SIB1. In an embodiment, the scheduling information contained in the first part of SIB 1 comprises resources for RAR reception at UE and resources for transmission of RAR response and resources for initial transmission.

[0035] In an embodiment, the WUS is transmitted periodically with a predefined periodicity. The periodicity of WUS is dependent on the periodicity of SSB and multiplexing pattern between SSB and CORESET. As an example, for multiplexing pattern 1, the periodicity of WUS is 20 ms, and for multiplexing patterns 2 and 3, the WUS periodicity equals to the periodicity of SSB. Currently, SIB1 is transmitted periodically in all beams in which SSB is transmitted. However, the following methods can be considered in the case of on demand SIB 1.

[0036] According to an embodiment, in one method, the WUS can be defined as a common WUS for the network or for all cells within the network. In such case, all the BS receiving the WUS will transmit SIB1 in all of their associated SSB beams.

[0037] According to an embodiment, in another method, the WUS can be specific for a cell and common for all SSBs associated with the cell. In such case, after receiving the WUS, the BS transmit SIB1 in all SSB beams. The WUS should contain information about the cell in which SIB1 transmission is anticipated by the UE.

[0038] According to an embodiment, in another method, the WUS can be specific to an SSB beam or for a group of SSB beams. In such a case, after receiving the WUS, the BS determines the SSB beam or group of beams corresponding to the WUS received and transmit SIB1 only in the determined set of beams(s). In such a case, the WUS should contain information about the SSB or a group of SSB in which SIB1 transmission is requested by the UE.

[0039] In an embodiment, the content of WUS can be an existing signal or a new signal defined for on-demand SIB1. The following methods can be considered for the signals to be used for the WUS.

[0040] In an embodiment, in one method, an orthogonal sequence can be used as the WUS. The orthogonal sequence comprises at least one of a Zad-off chu (ZC) sequence, a RACH preamble, PSS, and SSS. In another method, a cell ID can serve as a WUS. When a UE successfully detects an SSB, it can determine the cell ID using the received PSS and SSS and transmits the associated Cell ID as WUS. The following paragraphs provides an explanation for WUS configuration.

[0041] In an embodiment, the configuration for the transmission of WUS should be provided to the UE, and it can be provided in an SSB, in a DCI, PDSCH, or data channel. Further, to reduce the information exchanged, some of the parameters of the WUS configuration can be predefined in the specification. The WUS configuration contains parameters such as threshold value, timing advance indication, parameter enabling on-demand SIB1, scheduling information, modulation and coding scheme (MCS), timer information, power control parameters, retransmission pattern etc. The threshold is used for selecting theSSB beam. The UE measures the SSB beams and selects the SSB beam in which the measurement crossing the threshold as the best beam and transmits the WUS in the beam used for reception of the best SSB. In case of no measurement crossing the threshold, the UE selects a SSB beam randomly or a SSB beam with maximum measurement value. The timing advance is indicated by the BS so that the WUS transmissions from the UEs are synchronized when received by the BS. The UE will transmit the WUS by applying the indicated timing advance and in the beam used for reception of the selected SSB. The MCS needed for transmission of a cell ID as WUS, since it requires an UL channel, which be a control or data channel. Additionally, the SCS indicated in the MIB for the SIB1 will be utilized for the UL channel transmission. This reduces the need to indicate the SCS for WUS explicitly in WUS configuration.

[0042] In an embodiment, the scheduling information in WUS configuration provides one or more time and frequency resource to transmit the WUS. Multiple options can be considered for providing the scheduling information for the transmission of WUS to the UE.

[0043] According an embodiment, in one option, the scheduling information contains parameters such as subcarrier spacing (SCS) of the WUS, the number of slots and / or symbols intended for the WUS transmission, the number of resource blocks (RBs) intended for the WUS transmission, the time and frequency offset w.r.t. a reference to indicate the starting time and starting frequency allocated for the WUS transmission, etc. The time offset can be in terms of one of a slot offset, symbol offset, subframe offset, symbol index, and slot index.

[0044] FIG. 1 illustrates a time frequency resources for WUS, according to an embodiment of the present disclosure. As depicted in FIG. 1, the WUS is transmitted after a time offset of TO, and frequency offset F0 with respect to the selected SSB. The reference for applying the time and frequency offsets is the last symbol of the selected SSB and the first RB of selected SSB, respectively. Here TO and F0 are predefined. Further the duration of the transmission of WUS is provided as N symbols and R RBs.

[0045] According to an embodiment, in another option, the scheduling information is indicated as an index from a predefined table containing time and frequency locations to transmit the WUS. The locations can be in terms of time offsets, frequency offsets, duration, etc. For e.g., the predefined table contains a slot offset, starting symbol index, the number ofsymbols, start RB, number of RBs etc. The table can also contain the preamble characteristics such as preamble format and duration or the configuration for preamble to transmit as WUS. E.g., in NR, a table is defined for possible set of time domain ROs and PreambleConfiglndex is indicated to select one or more ROs from the set. The possible options for the preamble formats and durations for the WUS can be a subset of the table defined in the NR for PRACHConfigurationlndex, which contains 256 options for long and short preambles.

[0046] According to an embodiment, the power control parameter in the WUS configuration comprises the transmit power of WUS, the power increment factor in the case of WUS retransmission, maximum transmit power of WUS, SSB block transmit power information to calculate pathloss, etc. In one option, the UE transmits the WUS with the maximum transmit power configured. In another option, the UE determines the pathloss using the SSB block transmit power configured and the measured RSRP of the received SSB. Now, the transmit power of the WUS is determined based on the transmit power of the WUS configured and the pathloss determined.

[0047] According to an embodiment, after transmitting the WUS, the UE monitors for the DCIto schedule SIB1, or SIB1, if already scheduled. Also, it starts a first timer, based on timer information in the WUS configuration. If a UE did not receive or failed to decode the DCVSIB 1 within the expiry of the first timer, then the UE retransmits the WUS, with a power increment, given by power increment factor in the power control parameter. The UE increases the WUS transmission power until it reaches the maximum limit indicated by the power control parameter. The timer information also provides the maximum number of retransmissions attempts for which the UE can retransmit the WUS.

[0048] According to an embodiment, in one option, the maximum number of retransmissions attempt is provided in terms of a number. In an embodiment, the UE starts a counter after first transmission of the WUS and increments the counter after each retransmission of the WUS. Further, the UE retransmits the WUS until the counter reaches the maximum value (number). In another option, the maximum number of retransmissions attempt is provided in terms of the timer information. Here, the UE starts a second timer after the first WUS transmission and attempts to retransmit the WUS until expiry of the timer.

[0049] According to an embodiment, the retransmission pattern in the WUS configuration provides the periodicity for the second timer. The second timer for WUS retransmissions repeats with the indicated periodicity. The UE resumes retransmission in the next periodic occasion of the second timer if SIB1 is not received in the previous occasion. The periodicity is needed when the SSB periodicity is longer and is chosen such that the SSB periodicity is an integer multiple of the periodicity of second timer.

[0050] FIG. 2 illustrates WUS retransmissions within the periodic timer T2, according to an embodiment of the present disclosure. For example, as shown in FIG. 2, for an SSB periodicity of 80 ms, the periodicity of second timer is given as 20 ms. The UE performs the WUS retransmission in the next periodic occasions of second timer instead of waiting for next SSB.

[0051] In an embodiment, the WUS configuration can also contain a parameter to indicate whether the on-demand SIB1 and WUS transmission is enabled or not. In one option, the parameter can be used by the UE to determine whether SIB1 transmission is based on legacy mechanism or based on the WUS. In another option, the parameter can be used by the UEs to determine whether it can transmit the WUS to get the SIB1. E.g., some cells can be reserved for a particular UE category, given by access ID. If the UE from the particular category determines that the flag is set, then it sends WUS. Other UEs, on detecting the flag as set, will consider the cell as barred.

[0052] According to an embodiment, if a UE doesn't receive the WUS configuration, the following options can be considered. In one option, the UE considers the cell as barred and refrains from transmitting the WUS. In another option, the UE assumes that the on-demand SIB1 is disabled and performs legacy initial access procedures.

[0053] According to some embodiments, SSB provides the WUS configuration. The following paragraphs describe the modifications required in the SSB related configurations and procedures, if the SSB provides the WUS configuration. In one method, the WUS configuration can be provided by introducing new fields in the MIB of an SSB. In an embodiment, separate processing can be performed by the UE for the legacy MIB contents and contents of the WUS configuration. The size of the SSB may increase in this case to incorporate the additional fields. Currently, the SSB starting locations in a SSB burst set are predefined in terms of symbol index in a frame. Table 1 illustrates the possible start symbol index for the SSBs in a burst set asdefined for the NR technology. In an embodiment, a start symbol index defines the first symbol of SSB transmitted and the SSB occupy 4 symbols from the start. However, as shown in Table. 1, there are instances where the SSBs within a burst set are consecutive with no symbol gaps in between them. E.g., Case B in less than 3 GHz carrier frequency in Table 1 has a start symbol index as 4 and 8, which implies that the first SSB starts from the 4thsymbol and the second SSB starts from the 8thSymbol. Since the SSB has a size of 4 symbols, there is no time gap between SSB1 and SSB2. In the case of SSB scheduling the WUS, additional resources are needed to incorporate the WUS configuration and that may increase the size of the SSB. For example, the WUS configurations can be indicated by incorporating a fifth symbol in SSB. In such case, the SSB start index positions has to be redefined by considering additional symbols needed for WUS configurations. For example, the SSB start index positions has to be separated by a minimum of 5 symbols.

[0054] According to some embodiment, in another method, the existing bits in the SSB can be reused for scheduling the WUS. Since the SSB is a broadcast signal which is always ON, increasing the size is not efficient. Therefore, one or more contents of the WUS configuration can be indicated by remapping the existing bits of the MIB, keeping the size of the SSB intact. Two mappings of the bits, one for scheduling the DCI 1 0 and one for scheduling the WUS. For example, PDCCHConfig in MIB provides TDRA / FDRA for CORESETO and can be remapped to provide a new TDRA and a new FDRA for the WUS. For e.g., define a new table for the time resources for the WUS transmissions and the new TDRA will point to a row in the new table.Table 1

[0055] Currently, a set of time offsets possible between the MIB and the CORESETO are predefined and the MIB provides one value from the set and is applied w.r.t. the timing of the SSB. In the case of SSB scheduling the WUS for an on-demand SIB1, the WUS transmission will happen in between SSB and CORESETO. Therefore, the existing time offset values between SSB and CORESETO may not be enough to accommodate the WUS. Hence higher values for the time offset between the SSB and the CORESETO can be defined.

[0056] In the case of MIB scheduling the WUS, the MIB has to provide two offsets, one between the SSB and the WUS and the other between the SSB and the CORESETO. The possible set of offsets between the SSB and the WUS can be predefined and the MIB can indicate one from the set. Further, the offset can be applied w.r.t. the SSB symbols. The offset for scheduling the CORESETO can be applied with respect to the SSB as defined in the current NR technology, or w.r.t. the timing of the WUS.

[0057] According to some embodiment, the DCI provides the WUS configuration. In one embodiment, The WUS configuration can be provided to the UEs using a DCI. The following methods can be considered for the DCI scheduling the WUS.

[0058] According to an embodiment, in one method, the DCI format 1 0 scrambled with a SI- RNTI, which is used for scheduling SIB 1 is used for scheduling the WUS. The UE will monitor for the DCI in the CORESETO. The WUS configuration can be provided by using the reserved bits in the DCI format 1 0 scheduling SIB1 and / or by introducing new bits. In an embodiment, some parameters of the WUS configuration can be predefined to avoid increase in the size of the DCI. Further, one or more contents of the WUS configuration can be indicated by remapping the existing bits of the DCI format 1 0 scrambled by the SI-RNTI. For example, two mappings can be defined for the bits, one for scheduling SIB1 and the other for scheduling the WUS.

[0059] According to an embodiment, in another method, the DCI format 1 0 scrambled by a new RNTI (e.g., WUS-RNTI) can be used for scheduling the WUS. The UE will monitor for the DCI format 1 0 twice using different RNTIs in CORESETO: first time with the WUS-RNTI and then with the SI-RNTI.

[0060] According to an embodiment, in yet another method, a separate DCI format (e.g. DCI format O x) can be defined for scheduling the WUS. A new RNTI can be defined for the DCI format. Some of the parameters of the DCI format, scheduling the WUS, can be predefined since all the parameters cannot be configured in the SSB and the UE cannot receive the RRC message. The parameters include one or more of interleaving, resource element group (REG) bundle Size, interleaver size, shiftindex, cyclic Prefix, number of cyclic redundancy check (CRC) bits, aggregation level and precoding. In one option the value of these parameters can be same as that of the DCI format 1 0 scrambled with SI-RNTI. In another option new values can be defined for a few parameters. For e.g., a CRC of 32 bits can be defined for the DCI to get more robustness.

[0061] In an embodiment, the BS configures a resource pool (such as a CORESET) to the UE and the UE monitors for the DCI(s) in the configured resource pool. The resource pool is a set of time resources (E.g., number of symbols) and a set of frequency resources (e.g., number of RBs) in a resource grid. The time instant to search for the DCI is provided to UE by a set of time and frequency offsets.

[0062] According to an embodiment, the following methods can be considered for providing the resources to monitor for the DCI(s).

[0063] According to an embodiment, in one method, the same resource pool can be configured to the UE for monitoring of the DCI scheduling the WUS and the DCI scheduling the SIB1. For e.g., CORESETO and search space 0 defined in NR can be used for monitoring the DCI scheduling the WUS and the SIB1.

[0064] According to an embodiment, in another method, separate resource pools (i.e. different CORESETs) can be configured for monitoring the DCI scheduling the WUS and for the DCI scheduling the SIB 1.

[0065] According to an embodiment, in another method, a resource pool for monitoring the DCI format scheduling the WUS can be predefined with fixed size. E.g., a predefined set of time and frequency offset w.r.t. the SSB or the CORESETO will be used to locate the resource pool for monitoring the DCI scheduling the WUS.

[0066] According to an embodiment, in yet another method, one resource pool can be configured, of which two subsections can be defined for monitoring the DCIs. E.g. two different types of search spaces can be defined within a CORESET, one for monitoring the DCI scheduling the SIB1 and second one for monitoring the DCI scheduling the WUS.

[0067] According to an embodiment, in yet another method, the SSB will provide a resource pool only to monitor the DCI scheduling the WUS. For e.g., a parameter PDCCHConfigSIBl of the MIB will be reused to schedule the resource pool for the DCI scheduling the WUS instead of scheduling the CORESETO and the search spaceO. Whereas the DCI scheduling the WUS will provide the scheduling of CORESETO and search spaceO to monitor the DCI format 1 0 scheduling the SIB1.

[0068] According to an embodiment, different contents of WUS such as the signal to be transmitted as WUS can be allocated to UE. The following methods can be considered for providing the contents of the WUS.

[0069] According to an embodiment, in one method, a set of orthogonal sequences are predefined as content of the WUS. In an e.g., with 1008 possible values for a cell ID, a set of 1008 orthogonal sequences should be predefined in a network to have specific WUS for each cell. In another example, for a cell with 64 beams, a set of 64 sequences can be predefined to have specific WUS for each SSB beam.

[0070] According to an embodiment, in another method, one or more sequences can be configured to the UE as content of the WUS. For e.g., a RACH preamble format, a ZC root sequence index and a cyclic shift is configured to the UE. A required number of preambles can be generated using the root sequence index and cyclic shift. To convey this information, new parameters such as WUSbaseRootSequence and WUSCyclicShift can be introduced in the WUS configuration. The values of the root sequence and cyclic shift can be specific to one of a cell, a SSB group and a SSB.

[0071] According to an embodiment, in yet another method, one or more SSS sequence or one or more SSS Cell ID is reserved during network deployment for a cell. In a network, with cells having N SSBs or N SSB groups, the SSS selection or Cell ID selection for a cell can be done using the formula SSSIndex MOD N and CelllD MOD N respectively to reserve the N SSS sequences or the N Cell IDs for the the N SSBs or the SSB groups within a cell. For example, in a scenario with five cells and N=3 SSB groups per cell, if the SSS sequence index 1 is indicated in received SSB of cell 1, then SSS sequence 4 will be allocated to cell 2, SSS sequence 7 to cell 3, and so forth. The three SSS sequences reserved for a cell will be allocated to the three SSB groups of the cell, with each group associated with one SSS sequence in ascending order of their indices, starting from the SSS of the received SSB. FIG. 3 illustrates the assignment of SSS sequence as WUSs per SSB group in a hypothetical 5-cell scenario.

[0072] As mentioned earlier, a WUS can be specific to a cell, a SSB group or a SSB. The WUS and its association with the cell, the SSB or the group of SSBs in which the SIB1 transmission is requested by the UE can be interpreted in multiple ways by the UE. The following methods can be considered.

[0073] According to an embodiment, in one method, the time and frequency location used for transmission of the WUS can be used for implicit indication of association of the WUS with the SSB or the group of SSBs. For e.g. a number of sets of time and frequency resources based on the number of SSB groups within a cell can be configured to the UE with each set specific to one SSB group.

[0074] According to an embodiment, in another method, the association can be predefined based on a predefined number of cells, SSB groups or SSBs. A fixed number of WUSs areassociated with a predefined number of cells, SSB groups or SSBs in increasing order of indices. For e.g., in a cell with a predefined number of SSBs, a set of WUS with a number of sequences equal to the predefined number of SSBs are provided, the first sequence from the set corresponds to the first SSB of the cell, the second sequence corresponds to the second SSB, and so forth. In another e.g., 1008 sequences are associated with 1008 cell IDs in ascending order of their indices.

[0075] According to an embodiment, in yet another method, the association of the WUS at a moment depends on the absolute number of SSBs or groups of SSB available at a moment from a predefined maximum number of SSBs or groups of SSBs. For e.g., the number of actual transmitted SSB beams or SSB groups from a predefined SSB burst. A set of WUSs are associated in increasing order of their indices with the available number of SSB groups or SSBs, arranged in ascending order of their indices. In this scenario, the WUS configuration includes a parameter indicating the number and positions of the available SSB groups or SSBs. For example, in a burst set of 8 beams, where 5 are transmitted, a bitmap "10101101" is conveyed to the UE to represent the presence of the beams. From a set of 8 predefined sequences, 5 consecutive sequences are assigned to the transmitted SSB beams in ascending order of their indices, as illustrated in FIG. 3. FIG. 3 illustrates association of predefined WUS sequences with the available SSB beams.

[0076] According to an embodiment, in yet another method, a set of WUS can be associated to the SSBs within a SSB group and the association is repeated across the groups within a cell. For e.g., a cell with 8 SSB groups each having 4 SSBs SSB1, SSB2, SSB3, SSB4, 4 WUS sequences WUS1, WUS2, WUS3, WUS4) are defined respectively and shared across the groups. If a UE transmits WUS 1 for SSB 1, then the gNB receiving WUS 1 will transmit the SIB1 for the first SSB, i.e., SSB1 of all 8 groups. Similarly, a set of WUS can be associated with SSB groups in a cell and the association is repeated across the cells within a network.

[0077] Currently, a SIB1 is transmitted periodically by the BS. In an embodiment, the periodicity is dependent on the periodicity of SSB and a multiplexing pattern between SSB and CORESETO. Hence, the transmission pattern of SIB1 is fixed and is known to connect UE based on the SSB transmission pattern. Several priority rules have been defined when the SIB 1 occasion overlaps with the other signals / channels. In the case of on-demand SIB1, even though the pattern is fixed, the BS transmits the SIB1 only upon reception of the WUS. However,whether the WUS is received by the BS or not, and whether the BS is transmitting the SIB1 in the location or not is unknown to the connected UE. Hence, whether conflict with the SIB1 occur or not is not known to the connected UE. The UE following the priority rule irrespective of whether SIB1 is transmitted or not can lead to wastage of resources. The following methods can be considered in case of no transmissions of SIB1.

[0078] In one method, the BS schedules operation to the UE over the resources configured for SIB1 semi-statically. A dynamic indication or grant to perform the scheduled operations in overlapped resources of SIB1 can be transmitted by the BS if the BS doesn’t receive the WUS. The UE performs scheduled operations only upon receiving the dynamic grant. In another method, the BS schedules operation to the UE over the resources configured for SIB 1. The UE will perform the operations as per the scheduling. Following paragraphs will explain a detail implementation of the method implemented at user equipment (UE) and base station (BS).

[0079] FIG. 4 illustrates a method 400 for method for on-demand transmission of signals, according to an embodiment of the present disclosure. In an embodiment, the method 400 is implemented in at least one first node. As an example, the first node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU). Further, the first node is communicated with the at least one second node. The second node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS.

[0080] According to an embodiment, at step 401, the first node transmits at least one synchronization signal block (SSB). Further, at step 403, the first node receives a wake-up signal (WUS) for transmitting at least one system information block 1 (SIB1). Further, at step 405, the first node transmits at least one of at least one first DCI and an RAR in response to the WUS signal. Further, at step 407, the first node transmits at least one second DCI comprising scheduling information of the at least one SIB1. Further, at step 409, the first node transmits the at least one SIB1.

[0081] In an embodiment, the WUS signal is received in periodic occasions; wherein the periodic occasions are one of a predefined, or signaled to the at least one second node or based on at least one of the periodicity of the at least one SSB and a multiplexing transmission pattern between SSB and CORESETO.

[0082] In an embodiment, the at least one first and at least one second DCI is one of same and different.

[0083] In an embodiment, the at least one WUS signal is associated with at least one of a group of cells within a network as a common WUS, an specific cell as a dedicated WUS, a group of SSBs within an SSB burst, an individual SSB of SSB burst as a dedicated WUS, and an individual SSB within an SSB group within an SSB burst, wherein the association is repeated across the groups for identical SSB indices.

[0084] In an embodiment, the at least one SIB1 is transmitted in at least one one of at least one cell and at least one beam.

[0085] In an embodiment, the association is predefined based on one of a predefined number of cells, or SSB groups or SSBs.

[0086] In an embodiment, the association of the WUS signal at any instant is based on an active SSBs or active group of SSBs available at the instant from a predefined maximum number of SSBs or groups of SSBs; where the active SSBs or active group of SSBs available at the instant is indicated using a bitmap.

[0087] In an embodiment, the WUS signal comprises one of at least one orthogonal sequence or at least one cell ID.

[0088] In an embodiment, the at least one orthogonal sequence is at least one of a Zad-off chu (ZC) sequence, a RACH preamble, PSS, and at least one SSS sequence.

[0089] In an embodiment, the WUS signal is used as msgl for establishing RRC connection.

[0090] In an embodiment, the RAR contains at least one of an information for time synchronization, identity of a UE, information for contention resolution, and scheduling information for at least one of UL transmission and DL reception.

[0091] In an embodiment, the at least one SSB comprises at least one parameter indicating enabling of on-demand transmission of at least one SIB1, where the at least one parameterindicates whether the corresponding SIB1 transmission is one of periodic based on legacy mechanism and based on the WUS request.

[0092] In an embodiment, the association is based on one of a predefined association, or association provided by the at least one first node, or indices of the at least one orthogonal sequence, or at least one of time and frequency resources where the WUS is received.

[0093] In an embodiment, the transmitting the at least one SIB1 is based on a pattern. In an embodiment, the pattern comprises at least one of a periodicity of the at least one SIB1 and a duration to monitor for the at least one SIB1; wherein the periodicity depends on the SSB periodicity and multiplexing pattern between SSB and CORESETO.

[0094] In an embodiment, the transmission of the at least one SSB further comprises providing at least one WUS configuration using one of predefined values or at least one of the at least one SSB, at least one third DCI, and a data channel.

[0095] In an embodiment, the at least one WUS is received based on at least one WUS configuration.

[0096] In an embodiment, the WUS configuration is provided by one of introducing at least one new bit in MIB or reusing at least one existing bit of the SSB.

[0097] In an embodiment, a separate processing of channel coding, CRC, and rate matching is performed for the legacy MIB bits and the at least one new bit.

[0098] In an embodiment, the at least one new bit for the WUS configuration is provided by adding a fifth symbol to the at least one SSB.

[0099] In an embodiment, the at least one second DCI and at least one third DCI is one of same and different.

[0100] In an embodiment, the format of at least one of the at least one first DCI and the at least one third DCI is one of a DCI format 1 0 and a new DCI format.

[0101] In an embodiment, the at least one of at least one first DCI and at least one third DCI is scrambled with one of a SI-RNTI and a new RNTI.

[0102] In an embodiment, the new RNTI is the WUS-RNTI. In an embodiment, the at least one of at least one first DCI, at least one second DCI and at least one third DCI is transmitted based on plurality of parameters.

[0103] In an embodiment, the plurality of parameters comprises at least one of interleaving, resource element group (REG) bundle Size, interleave size, shift index, cyclic Prefix, a number of cyclic redundancy check (CRC) bits, aggregation level, and precoding.

[0104] In an embodiment, the at least one of the plurality of parameters is one of predefined, or provided in at least one of the at least one SSB, WUS configuration, MAC-CE, and RRC.

[0105] In an embodiment, at least one of the plurality of parameters have one of values same as that of corresponding parameters of DCI format 1 0 or new values; wherein the new values are higher than that of corresponding parameters of DCI format 1 0 scrambled with SI- RNTI.

[0106] In an embodiment, the at least one of the at least one first DCI, at least one second DCI and at least one third DCI is transmitted in at least one CORESET; wherein the at least one CORESET comprises a set of time resources, a set of frequency resources, a time offset with respect to a reference and a frequency offset with respect to a reference.

[0107] In an embodiment, at least one CORESET for transmitting at least one of the at least one first DCI, the at least one second DCI and the at least one third DCI is same or different.

[0108] In an embodiment, the at least one CORESET comprises at least one subsection, wherein the at least one subsection is configured for independent monitoring by at least one second node of the at least one first DCI, the at least one second DCI and the at least one third DCI.

[0109] In an embodiment, at least one of the at least one CORESET and at least one subsection is one of predefined and provided in one of the at least one SSB, or WUS configuration, or MAC-CE or RRC. In an embodiment, the CORESET is CORESETO.

[0110] In an embodiment, the reference is a resource related to one of at least one SSB, or at least one first DCI, or at least one third DCI, or RAR and WUS transmission.

[0111] In an embodiment, the WUS configuration comprises a parameter indicating the accessibility of the cell for a certain type of at least one second node.

[0112] In an embodiment, the at least one of at least one SSS sequence and the at least one Cell ID are reserved for a cell during network deployment to be used as the at least one WUS.

[0113] In an embodiment, the at least one SIB1 transmissions overlaps with one of scheduled transmission and scheduled reception of at least one of at least one other signal and at least one other channel.

[0114] In an embodiment, the one of scheduled transmission and scheduled receptions are based on a set of priority rules. In an embodiment, the set of priority rules one of predefined and provided by the at least one first node. In an embodiment, the set of priority rules is provided by the at least one first node in one of the WUS configuration, or control channel, or MAC-CE and RRC.

[0115] In an embodiment, the at least one first node performs the at least one of the scheduled transmission and the scheduled reception based on the RAR.

[0116] According to an embodiment, as the method 400 as described above is explained from the perspective of the first node for eg. BS. The analogous steps are performed at the second node for eg. UE. Therefore, for the sake of brevity analogous steps related to second node are omitted here. However, a person skilled in the art can easily construe the functions performed at the second node.

[0117] FIG. 5 illustrates a method 500 for transmitting a Wake-Up Signal (WUS) configuration by a node in a communication network, according to an embodiment of the present disclosure. In an embodiment, the method 500 is implemented in at least one first node.As an example, the first node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS. Further, the first node is communicated with the at least one second node. As an example, the second node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU).

[0118] According to an embodiment, the step 501, the first node transmits at least one WUS configuration to at least one second node; wherein the at least one WUS configuration comprises at least one of a threshold value, a timing advance offset, at least one cell ID, a root sequence index, SSB block power, a parameter indicating at least one of number and positions of the at least one SSB in a SSB burst, a PreambleConfiglndex, a RACH preamble, an rach occasion and starting position of WUS in the frequency.

[0119] In an embodiment, the at least one WUS configuration further comprises at least one of a parameter indicating enabling of on demand SIB1 operation of a cell, scheduling information for WUS, a modulation and coding scheme (MCS), a SIB1 transmission pattern, power control parameters, a parameter to indicate the accessibility of the cell for a type of at least one second node, a time offset with respect to a reference, a frequency offset with respect to the reference, an index of the orthogonal sequence, maximum number of WUS retransmissions attempts or a timer information for WUS retransmission.

[0120] In an embodiment, the index of orthogonal sequence is the starting index of the consecutive WUSs associated sequentially to the active beams or groups of beam of the cell.

[0121] In an embodiment, the scheduling information of the WUS comprises at least one of a subcarrier spacing (SCS), time and frequency resources intended for the transmission of the WUS signal, a subset of preamble formats, a subset of RACH occasions and a periodicity for WUS transmissions.

[0122] In an embodiment, the time offset indicate a starting time for the WUS transmission by the at least one second node and the frequency offset indicate a starting frequency allocated for the WUS transmission by the at least one second node.

[0123] In an embodiment, the time offset indicate a starting time for the reception of at least one SIB1 by the at least one second node and the frequency offset indicate a starting frequency allocated for the reception of at least one SIB1 by the at least one second node.

[0124] In an embodiment, the time offset is indicated in terms of at least one of a number of slots, number of symbols, number of subframe, number of frames, an index of slot, index of symbol, index of subframe and index of frame.

[0125] In an embodiment, the time resources is indicated in terms of at least one of a number of slots, number of symbols, number of subframe and number of frames.

[0126] In an embodiment, the scheduling information is indicated as an index from a predefined table containing a time and a frequency resources to transmit the WUS signal by the at least one second node.

[0127] In an embodiment, the predefined table comprises at least one of a slot offset, a starting symbol index, a number of symbols, a start RB, a number of RBs, a preamble format, and a configuration of a preamble to transmit the WUS signal.

[0128] In an embodiment, the preamble format is defined in a PRACHConfigurationlndex.

[0129] In an embodiment, the at least one of the time and the frequency resources indicates the association of at least one WUS with at least one of at least one cell and at least one beam.

[0130] In an embodiment, the SIB1 transmission pattern comprises at least one of a periodicity of at least one SIB1 and a duration to monitor for the at least one SIB1 by the at least one second node.

[0131] In an embodiment, the power control parameters is used to determine a transmit power of the WUS signal, wherein the power control parameters include at least one of a power increment factor, an initial transmit power, a maximum transmit power of the WUS signal, SSB block transmit power information.

[0132] In an embodiment, the at least one first node performs retransmission of the WUS, with a power increment, by a power increment factor; where the at least one second nodeincreases the WUS transmission power until one of a maximum power limit or expiry of a timer.

[0133] In an embodiment, the at least one WUS configuration is one of at least one predefined value or transmitted in at least one of at least one SSB, at least one DCI, a data channel.

[0134] In an embodiment, the at least one WUS configuration is provided by one of introducing at least one new bit in MIB or reusing at least one existing bit of the SSB.

[0135] In an embodiment, a separate processing of channel coding, Cyclic Redundancy Check (CRC), and rate matching is performed for the legacy MIB bits and the at least one new bit.

[0136] In an embodiment, the at least one new bit for the at least one WUS configuration is provided by adding a fifth symbol to the at least one SSB.

[0137] In an embodiment, the format of at least one of the at least one DCI is one of a DCI format 1 0 and a new DCI format.

[0138] In an embodiment, the at least one WUS configuration is provided by using at least one of at least one reserved bit in the DCI format 1 0, reusing fields of the existing DCI format 1 0 or by newly defined parameters for scheduling the WUS signal.

[0139] In an embodiment, the at least one of at least one DCI is scrambled with one of a SI-RNTI and a new RNTI. In an embodiment, the new RNTI is WUS-RNTI.

[0140] In an embodiment, the at least one DCI is transmitted based on plurality of parameters. In an embodiment, the plurality of parameters comprises at least one of interleaving, resource element group (REG) bundle Size, interleave size, shift index, cyclic Prefix, a number of cyclic redundancy check (CRC) bits, aggregation level, and precoding. In an embodiment, the at least one of the plurality of parameters is at least one of predefined, and provided in at least one of the at least one SSB, at least one WUS configuration, MAC-CE, and RRC.

[0141] In an embodiment, at least one of the plurality of parameters have one of values same as that of corresponding parameters of DCI format 1 0 and new values; wherein the new values are higher than that of corresponding parameters of DCI format 1 0 scrambled with SI- RNTI.

[0142] In an embodiment, the at least one first DCI is received in at least one second CORESET.

[0143] In an embodiment, the configuration furtherr comprises at least one first CORESET and at least one second CORESET comprises at least one of a set of time resources, a set of frequency resources, a time offset with respect to a reference and a frequency offset with respect to a reference.

[0144] In an embodiment, the at least one first CORESET is configured to the least one second node to monitor the at least one second DCI, and at least one other DCI is same or different; wherein the at least one second DCI comprises scheduling information for transmission of at least one of an RAR of at least one WUS and at least one SIB1.

[0145] In an embodiment, the at least one first CORESET and at least one second CORESET is same or different. Further, the at least one first CORESET and the at least one second CORESET comprises at least one subsection.

[0146] In an embodiment, the at least one subsection is used for independent monitoring by at least one second node of at least one of the at least one first DCI and at least one second DCI, where the at least one other DCI comprises scheduling information for transmission of at least one of an RAR for WUS and at least one SIB1.

[0147] In an embodiment, at least one of the at least one second CORESET is one of predefined and provided in one of at least one SSB, MAC-CE or RRC.

[0148] In an embodiment, the at least one subsection is one of predefined and provided in the at least one SSB, or the at least one WUS configuration, or MAC-CE or RRC.

[0149] In an embodiment, the reference is a resource related to one of at least one SSB, or at least one first DCI, or last symbol of reception of the at least one WUS configuration, or an RAR of WUS and WUS transmission.

[0150] In an embodiment, the at least one first DCI and at least one other DCI is one of same and different, where the at least one other DCI comprises scheduling information for transmission of at least one SIB1.

[0151] According to an embodiment, as the method 500 as described above is explained from the perspective of the first node for eg. BS . The analogous steps are performed at the second node for eg. BS . Therefore, for the sake of brevity analogous steps related to the second node are omitted here. However, a person skilled in the art can easily construe the functions performed at the second node.

[0152] FIG. 6 illustrates another method 600 for on-demand transmission of signals, according to an embodiment of the present disclosure. In an embodiment, the method 600 is implemented in at least one first node. As an example, the first node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU). Further, the first node is communicated with the at least one second node. The second node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS.

[0153] According to an embodiment, at step 601, the first node transmits at least one SSB. Further, at step 603, the first node splits at least one SIB1 into first part and second part. Further, at step 605, the first node transmits at least one first DCI comprising the scheduling information of a first part of the at least one SIB1. Further, at step 607 the first node transmits the first part. Further, the first node at step 609 receives a wake-up signal (WUS) for transmitting the second part of the at least one SIB 1. Further, the first node at step 611 transmits at least one of at least one second DCI and an RAR in response to the at least one WUS signal. Further, the first node at step 613 transmits at least one third DCI comprising scheduling information of the second part of the at least one SIB1. Further, at step 615 the first node transmits the second part. 1

[0154] According to an embodiment, the first part of the at least one SIB1 comprising a configuration required for the transmission of a RACH preamble.

[0155] According to an embodiment, the transmission of at least one of at least one RAR and at least one SIB 1 is scheduleed by at least one information contained in the first part of the at least one SIB 1 when at least one of the at least one first DCI and the at least one second DCI is not transmitted.

[0156] According to an embodiment, as the method 600 as described above is explained from the perspective of the first node for eg. BS. The analogous steps are performed at the second node for eg. UE. Therefore, for the sake of brevity analogous steps related to second node are omitted here. However, a person skilled in the art can easily construe the functions performed at the second node.

[0157] FIG. 7 illustrates a method 700 for on-demand transmission of signals, according to an embodiment of the present disclosure. In an embodiment, the method 700 is implemented in at least one first node. As an example, the first node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS. Further, the second node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU). Further, the first node is communicated with the at least one second node.

[0158] According to an embodiment, at step 701, the first node receives at least one SSB. Further, at step 703, the first node receives at least one first DCI comprising the scheduling information of a first part of the at least one SIB1. Further, at step 705, the first node receives the first part. Further, at step 707, the first node transmits at least one wake-up signal (WUS) for receiving the second part of the at least one SIB1. Further, at step 709, the first node receives at least one of at least one second DCI and an RAR in response to the at least one WUS signal. Further, at step 711, the first node receives at least one third DCI comprising scheduling information of the second part of the at least one SIB1. Further, at step 713, the first node receives the second part.

[0159] In an embodiment, the first part of the at least one SIB1 comprising a configuration required for the transmission of a RACH preamble.

[0160] In an embodiment, reception of at least one of at least one RAR and at least one SIB 1 is scheduled by at least one information contained in the first part of the at least one SIB 1 when at least one of the at least one first DCI and the at least one second DCI is not transmitted by the at least one second node.

[0161] In an embodiment, if at least one first node doesn't receive the WUS the at least one WUS configuration, the at least one first node assumes one of the cell as barred and refrains from transmitting the WUS the at least one WUS or the on-demand SIB1 is disabled and performs legacy initial access procedures.

[0162] In an embodiment, the at least one first node can access a cell using WUS based on a parameter provided by the at least one second node, wherein the parameter is set, whereas the at least one first node from other category, on detecting the parameter as set, will consider the cell as barred.

[0163] FIG. 8 illustrates a method 800 for on-demand transmission of signals, according to an embodiment of the present disclosure. In an embodiment, the method 800 is implemented in at least one first node. As an example, the first node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS. Further, the second node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU). Further, the first node is communicated with the at least one second node.

[0164] In an embodiment, at step 801, the first node receives at least one WUS configuration. Further, at step 803, the first node transmits at least one WUS to request reception of at least one SIB1. Further, at step 805, the first node receives at least one of at least one first DCI and an RAR in response to the at least one WUS signal. Further, at step 807, the first node receives at least one second DCI comprising scheduling information of the at least one SIB1. Further, at step 809 the first node receives the at least one SIB1.

[0165] In an embodiment, the at least one WUS is transmitted upon receiving, at least one synchronization signal block (SSB) with strength crossing a threshold.

[0166] In an embodiment, the at least one WUS configuration comprises at least one information, wherein the at least one information contains at least one of a threshold value, a timing advance offset, at least one cell ID, a root sequence index, SSB block power, a parameter indicating at least one of number and positions of the at least one SSB in a SSB burst, a PreambleConfiglndex, a RACH preamble, an RACH occasion and starting position of WUS in the frequency.

[0167] In an embodiment, the at least one WUS is transmitted in periodic occasions, wherein the periodic occasions are one of a predefined, or provided by the at least one second node or based on at least one of the periodicity of the at least one SSB and a multiplexing transmission pattern between SSB and CORESETO.

[0168] In an embodiment, the at least one first and at least one second DCI is one of same and different.

[0169] In an embodiment, he at least one WUS is associated with at least one of : a group of cells within a network as a common WUS, an specific cell as a dedicated WUS, a group of SSBs within an SSB burst, an individual SSB of SSB burst as a dedicated WUS, and an individual SSB within an SSB group within an SSB burst, wherein the association is repeated across the groups for identical SSB indices.

[0170] In an embodiment, the at least one SIB1 is transmitted by the at least one second node in at least one of at least one cell; and at least one beam.

[0171] In an embodiment, the association is predefined based on one of a predefined number of cells, or SSB groups or SSBs.

[0172] In an embodiment, the association of the at least one WUS at any instant is based on an active SSBs or active group of SSBs available at the instant from a predefined maximum number of SSBs or groups of SSBs, wherein the active SSBs or active group of SSBs availableat the instant is determined using a bitmap, wherein the bitmap is provided by the at least one second node.

[0173] In an embodiment, the at least one WUS comprises one of at least one orthogonal sequence or at least one cell ID. In an embodiment, the at least one orthogonal sequence is at least one of a Zad-off chu (ZC) sequence, a RACH preamble, PSS, and at least one SSS sequence.

[0174] In an embodiment, wherein the at least one WUS is used as msgl for establishing RRC connection. In an embodiment, the RAR contains at least one of information for time synchronization, identity of a UE, information for contention resolution, and scheduling information for at least one of UL transmission and DL reception.

[0175] In an embodiment, the at least one SSB comprises at least one parameter indicating enabling of on-demand reception of at least one SIB1, wherein the at least one parameter indicates whether the corresponding SIB1 reception is one of periodic based on legacy mechanism and based on the at least one WUS request.

[0176] In an embodiment, the association is based on one of a predefined association, or association provided by the at least one second node, or indices of the at least one orthogonal sequence, or at least one of time and frequency resources where the at least one WUS is received.

[0177] In an embodiment, wherein receiving the at least one SIB1 is based on a pattern. In an embodiment, the pattern comprises at least one of a periodicity of the at least one SIB1 and a duration to monitor for the at least one SIB1, wherein the periodicity depends on the SSB periodicity and multiplexing pattern between SSB and CORESET0.115.

[0178] In an embodiment, the reception of the at least one WUS configuration is in at least one of the at least one SSB, at least one third DCI, and a data channel.

[0179] In an embodiment the at least one information is predefined.

[0180] In an embodiment, the at least one WUS is transmitted based on the at least one WUS configuration.

[0181] In an embodiment, the at least one WUS configuration is provided by the at least one second node, by one of introducing at least one new bit in MIB or reusing at least one existing bit of the SSB.

[0182] In an embodiment, a separate processing of channel coding, CRC, and rate matching is performed for the legacy MIB bits and the at least one new bit.

[0183] In an embodiment, the at least one new bit for the at least one WUS configuration is provided by adding a fifth symbol to the at least one SSB by the at least one second node.

[0184] In an embodiment, wherein the at least one second DCI and at least one third DCI is one of same and different.

[0185] In an embodiment, the format of at least one of the at least one first DCI, the at least one second DCI and the at least one third DCI is one of a DCI format 1 0 and a new DCI format.

[0186] In an embodiment, the at least one of at least one first DCI, the at least one second DCI and at least one third DCI is scrambled with one of a SI-RNTI and a new RNTI. In an embodiment, the new RNTI is the WUS-RNTI.

[0187] In an embodiment, the at least one of at least one first DCI, at least one second DCI, and at least one third DCI is received based on a plurality of parameters.

[0188] In an embodiment, the plurality of parameters comprises at least one of interleaving, resource element group (REG) bundle Size, interleave size, shift index, cyclic Prefix, a number of cyclic redundancy check (CRC) bits, aggregation level, and precoding.

[0189] In an embodiment, the at least one of the plurality of parameters is one of predefined, or provided by the at least one second node in at least one of the at least one SSB, WUS configuration, MAC-CE, and RRC.

[0190] In an embodiment, at least one of the plurality of parameters have one of values same as that of corresponding parameters of DCI format 1 0 or new values, wherein the new values are higher than that of corresponding parameters of DCI format 1 0 scrambled with SI- RNTI.

[0191] In an embodiment, the at least one of the at least one first DCI, at least one second DCI and at least one third DCI is received in at least one CORESET, wherein the at least one CORESET comprises a set of time resources, a set of frequency resources, a time offset with respect to a reference and a frequency offset with respect to a reference.

[0192] In an embodiment, the at least one CORESET for transmitting at least one of the at least one first DCI, the at least one second DCI and the at least one third DCI is same or different. 131. The method as claimed in claim 129, wherein the at least one CORESET comprises at least one subsection.

[0193] In an embodiment, the at least one subsection is configured for independent monitoring by at least one second node of the at least one first DCI, the at least one second DCI, and the at least one third DCI.

[0194] In an embodiment, wherein at least one of the at least one CORESET and at least one subsection is one of predefined and provided by the at least one second node in one of the at least one SSB, or WUS configuration, or MAC-CE or RRC.

[0195] In an embodiment, the CORESET is CORESETO.

[0196] In an embodiment, the at least one WUS configuration comprises a parameter indicating the accessibility of the cell for a certain type of at least one first node.

[0197] In an embodiment, the at least one of at least one SSS sequence and the at least one Cell ID are reserved for a cell during network deployment to be used as the at least one WUS.

[0198] In an embodiment, the at least one SIB1 reception overlaps with one of scheduled transmission and scheduled reception of at least one of at least one other signal and at least one other channel.

[0199] In an embodiment, the one of scheduled transmission and scheduled receptions are based on a set of priority rules.

[0200] In an embodiment, the set of priority rules is one of predefined and provided by the at least one second node.

[0201] In an embodiment, the set of priority rules is provided by the at least one second node in one of the at least one WUS configuration, or control channel, or MAC-CE and RRC.

[0202] In an embodiment, the at least one second node performs the at least one of the scheduled transmission and the scheduled reception based on the RAR.

[0203] In an embodiment, the at least one second node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU).

[0204] In an embodiment, the at least one WUS configuration provided by the at least one second node further comprises at least one of a parameter indicating enabling of on demand SIB1 operation of a cell, scheduling information for WUS, a modulation and coding scheme (MCS), a SIB1 transmission pattern, power control parameters, at least one first CORESET, a parameter to indicate the accessibility of the cell for a type of at least one second node, a time offset with respect to a reference, a frequency offset with respect to the reference, an index of the orthogonal sequence, maximum number of WUS retransmissions attempts or a timer information for WUS retransmission.

[0205] In an embodiment, the at least one first node performs retransmission of the at least one WUS, with a power increment, by a power increment factor; wherein the at least one second node increases the at least one WUS transmission power until one of a maximum power limit or expiry of a timer.

[0206] In an embodiment, the index of orthogonal sequence is the starting index of the consecutive WUSs associated sequentially to the active beams or groups of beam of the cell.

[0207] In an embodiment, the scheduling information of the at least one WUS comprises at least one of a subcarrier spacing (SCS), time and frequency resources intended for the transmission of the at least one WUS, a subset of preamble formats, a subset of RACH occasions and a periodicity for WUS transmissions.

[0208] In an embodiment, the time offset indicates a starting time for the transmission of the at least one WUS and the frequency offset indicates a starting frequency allocated for the transmission of the at least one WUS.

[0209] In an embodiment, the time offset indicate a starting time for the reception of at least one SIB1 by the at least one first node and the frequency offset indicate a starting frequency allocated for the reception of at least one SIB1 by the at least one first node.

[0210] In an embodiment, the time offset is indicated in terms of at least one of a number of slots, number of symbols, number of subframe, number of frames, an index of slot, index of symbol, index of subframe and index of frame.

[0211] In an embodiment, the time resources is indicated in terms of at least one of a number of slots, number of symbols, number of subframe and number of frames.

[0212] In an embodiment, the scheduling information is indicated by the at least one second node as an index from a predefined table containing a time and a frequency resources to transmit the at least one WUS.

[0213] In an embodiment, the predefined table comprises at least one of a slot offset, a starting symbol index, a number of symbols, a start RB, a number of RBs, a preamble format, and a configuration of a preamble to transmit the at least one WUS.

[0214] In an embodiment, the preamble format is defined in a PRACHConfigurationlndex.

[0215] In an embodiment, the at least one of the time and the frequency resources indicates the association of at least one WUS with at least one of at least one cell and at least one beam.

[0216] In an embodiment, the SIB1 transmission pattern comprises at least one of a periodicity of at least one SIB1 and a duration to monitor for the at least one SIB1 by the at least one first node.

[0217] In an embodiment, the power control parameters is used to determine a transmit power of the at least one WUS, wherein the power control parameters include at least one of a power increment factor, an initial transmit power, a maximum transmit power of the at least one WUS, SSB block transmit power information.

[0218] In an embodiment, the at least one WUS configuration is provided, by the at least one second node, by using at least one of at least one reserved bit in the DCI format 1 0, reusing fields of an existing DCI format 1 0 or by newly defined parameters for scheduling the at least one WUS.

[0219] In an embodiment, the reference is a resource related to one of at least one SSB, or at least one first DCI, or at least one second DCI, or at least one third DCI, or last symbol of reception of the at least one WUS configuration, or an RAR of WUS and WUS transmission.

[0220] Fig. 9 illustrates a general architecture of the first node / second node 900 for implementation, in accordance with an embodiment of the present invention.

[0001] For an example, the processor(s)901 may be a single processing unit or a number of units, all of which could include multiple computing units. The processor(s) 901 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(s) 901 is configured to fetch and execute computer- readable instructions and data stored in the memory 903.

[0002] A processor may include one or more general purpose processors (e.g., INTEL® or Advanced Micro Devices® (AMD) microprocessors) and / or one or more special purpose processors (e.g., digital signal processors or Xilinx® System On Chip (SOC) Field Programmable Gate Array (FPGA) processor), MIPS / ARM-class processor, a microprocessor, a digital signal processor, an application specific integrated circuit, a microcontroller, a state machine, or any type of programmable logic array.

[0003] The memory 903 may include, but is no limited to, non-transitory machine- readable storage devices such as hard drives, magnetic tape, floppy diskettes, optical disks, Compact Disc Read-Only Memories (CD-ROMs), and magneto-optical disks, semiconductor memories, such as ROMs, Random Access Memories (RAMs), Programmable Read-Only Memories (PROMs), Erasable PROMs (EPROMs), Electrically Erasable PROMs (EEPROMs), flash memory, magnetic or optical cards, or other type of media / machine- readable medium suitable for storing electronic instructions.

[0004] In an example, the module(s), engine(s), and / or unit(s) 907 may include a program, a subroutine, a portion of a program, a software component, or a hardware component capable of performing a stated task or function. As used herein, the module(s), engine(s), and / or unit(s) may be implemented on a hardware component such as a server independently of other modules, or a module can exist with other modules on the same server, or within the same program. The module (s), engine(s), and / or unit(s) 907 may be implemented on a hardware component such as processor 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. The module (s), engine(s), and / or unit(s) 907 when executed by the processor(s) 901 may be configured to perform any of the described functionalities. In an alternate embodiment, the functions of the aforesaid modules may be performed by the processor(s) 901.

[0005] As a further example, the database 905 may be implemented with integrated hardware and software. The hardware may include a hardware disk controller with programmable search capabilities or a software system running on general-purpose hardware. Examples of databases are but are not limited to, in-memory databases, cloud databases, distributed databases, embedded databases, and the like. The database amongst other things, serves as a repository for storing data processed, received, and generated by one or more of the processor(s) 901, and the modules / engines / units 907.

[0006] The modules / engines / units 907 may be implemented with an Al module that may include a plurality of neural network layers. Examples of neural networks include, but are not limited to, a convolutional neural network (CNN), a deep neural network (DNN), a recurrent neural network (RNN), and a Restricted Boltzmann Machine (RBM). The learning technique is a method for training a predetermined target device using a plurality of learning data to cause,allow, or control the target device to make a determination or prediction. Examples of the learning techniques include, but are not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. At least one of a plurality of CNN, DNN, RNN, RMB models and the like may be implemented to thereby achieve execution of the present subject matter’s mechanism through an Al model. A function associated with the Al model may be performed through the non-volatile memory, the volatile memory, and the processor. The processor may include one or a plurality of processors. At this time, one or a plurality of processors may be a general -purpose processor, such as a central processing unit (CPU), an application processor (AP), or the like, a graphics-only processing unit such as a graphics processing unit (GPU), a visual processing unit (VPU), and / or an Al-dedicated processor such as a neural processing unit (NPU). The one or a plurality of processors control the processing of the input data in accordance with a predefined operating rule or the artificial intelligence (Al) model stored in the non-volatile memory and the volatile memory. The predefined operating rule or artificial intelligence model is provided through training or learning.

[0007] As a further example, the network interface 909 is configured to provide and establish communication with any electronic device via a public network, private network, or any wireless communication technology.

[0221] The figures of the disclosure are provided to illustrate some examples of the invention described. The figures are not to limit the scope of the depicted embodiments or the appended claims. Aspects of the disclosure are described herein with reference to the invention to example embodiments for illustration. It should be understood that specific details, relationships, and method are set forth to provide a full understanding of the example embodiments. One of ordinary skill in the art recognize the example embodiments can be practiced without one or more specific details and / or with other methods.

[0222] Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should beunderstood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

[0223] Aspects of the present disclosure may be implemented as computer program products that comprise articles of manufacture. Such computer program products may include one or more software components including, for example, applications, software objects, methods, data structure, and / or the like. In some embodiments, a software component may be stored on one or more non-transitory computer-readable media, which computer program product may comprise the computer-readable media with software component, comprising computer executable instructions, included thereon. The various control and operational systems described herein may incorporate one or more of such computer program products and / or software components for causing the various conveyors and components thereof to operate in accordance with the functionalities described herein.

[0224] A software component may be coded in any of a variety of programming languages. An illustrative programming language may be a lower-level programming language such as an assembly language associated with a particular hardware architecture and / or operating system platform / system. Other example of programming languages included, but are not limited to, a macro language, a shell or command language, a job control language, a script language, a database query, or search language, and / or report writing language. In one or more example embodiments, a software component comprising instructions in one of the foregoing examples of programming languages may be executed directly by an operating system or other software component without having to be first transformed into another form. A software component may be stored as a file or other data storage methods. Software components of a similar type or functionally related may be stored together such as, for example, in a particular directory, folder, or repository. Software components may be static (e.g., pre-established, or fixed) or dynamic (e.g., created or modified at the time of execution).

[0225] While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any disclosures or of what may be claimed, but rather as descriptions of features specific to particular embodiments of particular disclosures. Certain features that are described herein in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multipleembodiments separately or in any suitable sub combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a sub combination or variation of a sub combination.

[0226] Thus, particular embodiments of the subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In certain implementations, multitasking and parallel processing may be advantageous.

[0227] It is to be understood that the disclosure is not to be limited to the specific embodiments disclosed, and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation, unless described otherwise.

[0228] The terms “or” and “and / or” as used herein are to be interpreted as inclusive or meaning any one or any combination. Therefore, “A, B or C” or “A, B and / or C” mean “any of the following: A; B; C; A and B; A and C; B and C; A, B and C.” An exception to this definition will occur only when a combination of elements, functions, steps or acts are in some way inherently mutually exclusive.

[0229] Any combination of the above features and functionalities may be used in accordance with one or more embodiments. In the foregoing specification, embodiments have been described with reference to numerous specific details that may vary from implementation to implementation. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense. The sole and exclusive indicator of the scope of the invention, and what is intended by the applicants to be the scope of the invention, is the literal and equivalent scope of the set as claimed in claims that issue from this application, in the specific form in which such claims issue, including any subsequent correction.

Claims

We Claim:

1. A method for on-demand transmission of signals, the method comprising: transmitting, by at least one first node, at least one synchronization signal block (SSB); receiving, by the at least one first node, a wake-up signal (WUS) for transmitting at least one system information block 1 (SIB1); transmitting, by the at least one first node, at least one of at least one first DCI and an RAR in response to the at least one WUS signal; transmitting, by the at least one first node, at least one second DCI comprising scheduling information of the at least one SIB1, and transmitting by the at least one first node, the at least one SIB1.

2. The method as claimed in claim 1, wherein the at least one WUS signal is received in periodic occasions, wherein the periodic occasions are one of a predefined, or signalled to the at least one second node or based on at least one of the periodicity of the at least one SSB and a multiplexing transmission pattern between SSB and CORESETO.

3. The method as claimed in claim 1, wherein the at least one first and at least one second DCI is one of same and different.

4. The method as claimed in claim 1, wherein, the at least one WUS is associated with at least one of : a group of cells within a network as a common WUS, an specific cell as a dedicated WUS; a group of SSB s within an SSB burst; an individual SSB of SSB burst as a dedicated WUS; and an individual SSB within an SSB group within an SSB burst, wherein the association is repeated across the groups for identical SSB indices.

5. The method as claimed in claim 1, wherein the at least one SIB1 is transmitted in at least one of: at least one cell; and at least one beam.

6. The method as claimed in claim 4, wherein the association is predefined based on one of a predefined number of cells, or SSB groups or SSBs.

7. The method as claimed in claim 4, wherein the association of the at least one WUS signal at any instant is based on an active SSBs or active group of SSBs available at the instant from a predefined maximum number of SSBs or groups of SSBs; wherein the active SSBs or active group of SSBs available at the instant is indicated using a bitmap.

8. The method as claimed in claim 1, wherein the at least one WUS signal comprises one of at least one orthogonal sequence or at least one cell ID.

9. The method as claimed in claim 8, wherein the at least one orthogonal sequence is at least one of a Zad-off chu (ZC) sequence, a RACH preamble, PSS, and at least one SSS sequence.

10. The method as claimed in claim 1, wherein the at least one WUS signal is used as msgl for establishing RRC connection.

11. The method as claimed in claim 1, wherein the RAR contains at least one of an information for time synchronization, identity of a UE, information for contention resolution, and scheduling information for at least one of UL transmission and DL reception.

12. The method as claimed in claim 1, wherein the at least one SSB comprises at least one parameter indicating enabling of on-demand transmission of at least one SIB1, wherein the at least one parameter indicates whether the corresponding SIB1 transmission is one of periodic based on legacy mechanism and based on the at least one WUS request.

13. The method as claimed in claim 4, wherein the association is based on one of a predefined association, or association provided by the at least one first node, or indices of the at least one orthogonal sequence, or at least one of time and frequency resources where the at least one WUS is received.

14. The method as claimed in claim 1, wherein the transmitting the at least one SIB1 is based on a pattern.

15. The method as claimed in claim 14, wherein the pattern comprises at least one of a periodicity of the at least one SIB1 and a duration to monitor for the at least one SIB1; wherein the periodicity depends on the SSB periodicity and multiplexing pattern between SSB and CORESETO.

16. The method as claimed in claim 1, wherein the transmission of the at least one SSB further comprises providing at least one WUS configuration using one of predefined values or at least one of the at least one SSB, at least one third DCI, and a data channel.

17. The method as claimed in claim 1, wherein the at least one WUS is received based on at least one WUS configuration.

18. The method as claimed in claim 16, wherein the at least one WUS configuration is provided by one of introducing at least one new bit in MIB or reusing at least one existing bit of the SSB.

19. The method as claimed in claim 18, wherein a separate processing of channel coding, CRC, and rate matching is performed for the legacy MIB bits and the at least one new bit.

20. The method as claimed in claim 18, wherein the at least one new bit for the at least one WUS configuration is provided by adding a fifth symbol to the at least one SSB.

21. The method as claimed in claims 1 and 16, wherein the at least one second DCI and at least one third DCI is one of same and different.

22. The method as claimed in at least one of claim 1 and 16, wherein the format of at least one of the at least one first DCI and the at least one third DCI is one of a DCI format 1 0 and a new DCI format.

23. The method as claimed in claim 1, wherein the at least one of at least one first DCI and at least one third DCI is scrambled with one of a SI-RNTI and a new RNTI.

24. The method as claimed in claim 16, wherein the at least one of at least one first DCI and at least one third DCI is scrambled with one of a SI-RNTI and a new RNTI.

25. The method as claimed in claim 23, wherein the new RNTI is the WUS-RNTI.

26. The method as claimed in claim 1 , wherein the at least one of at least one first DCI, at least one second DCI, and at least one third DCI is transmitted based on a plurality of parameters.

27. The method as claimed in claim 16, wherein the at least one of at least one first DCI, at least one second DCI, and at least one third DCI is transmitted based on a plurality of parameters.

28. The method as claimed in claim 26, wherein the plurality of parameters comprises at least one of interleaving, resource element group (REG) bundle Size, interleave size, shift index, cyclic Prefix, a number of cyclic redundancy check (CRC) bits, aggregation level, and precoding.

29. The method as claimed in claim 25, wherein the at least one of the plurality of parameters is one of predefined, or provided in at least one of the at least one SSB, WUS configuration, MAC-CE, and RRC.

30. The method as claimed in claim 25, wherein at least one of the plurality of parameters have one of values same as that of corresponding parameters of DCI format 1 0 or new values, wherein the new values are higher than that of corresponding parameters of DCI format 1 0 scrambled with SI-RNTI.

31. The method as claimed in claim 1, wherein the at least one of the at least one first DCI, at least one second DCI and at least one third DCI is transmitted in at least one CORESET, wherein the at least one CORESET comprises a set of time resources, a set of frequency resources, a time offset with respect to a reference and a frequency offset with respect to a reference.

32. The method as claimed in claim 31, wherein the at least one CORESET for transmitting at least one of the at least one first DCI, the at least one second DCI and the at least one third DCI is same or different.

33. The method as claimed in claim 31 , wherein the at least one CORESET comprises at least one subsection, wherein the at least one subsection is configured for independent monitoring by at least one second node of the at least one first DCI, the at least one second DCI, and the at least one third DCI.

34. The method as claimed in at least one of claims31 and 33 , wherein at least one of the at least one CORESET and at least one subsection is one of predefined and provided in one of the at least one SSB, or WUS configuration, or MAC-CE or RRC.

35. The method as claimed in claim 31 , wherein the CORESET is CORESETO.

36. The method as claimed in claim 31 , wherein the reference is a resource related to one of at least one SSB, or at least one first DCI, or at least one third DCI, or RAR and WUS transmission.

37. The method as claimed in claim 16, wherein the at least one WUS configuration comprises a parameter indicating the accessibility of the cell for a certain type of at least one second node.

38. The method as claimed in claim 9, wherein the at least one of at least one SSS sequence and the at least one Cell ID are reserved for a cell during network deployment to be used as the at least one WUS.

39. The method as claimed in claim 1, wherein the at least one SIB1 transmissions overlaps with one of scheduled transmission and scheduled reception of at least one of at least one other signal and at least one other channel.

40. The method as claimed in claim 39, wherein the one of scheduled transmission and scheduled receptions are based on a set of priority rules.

41. The method as claimed in claim 40, wherein the set of priority rules one of predefined and provided by the at least one first node.

42. The method as claimed in claim 41, wherein the set of priority rules is provided by the at least one first node in one of the at least one WUS configuration, or control channel, or MAC- CE and RRC.

43. The method as claimed in claim 39, wherein the at least one first node performs the at least one of the scheduled transmission and the scheduled reception based on the RAR.

44. The method as claimed in claim 1, wherein the at least one first node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU).

45. The method as claimed in claim 1, wherein the at least one second node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS.

46. A method of transmitting a Wake-Up Signal (WUS) configuration by a node in a communication network, the method comprising: transmitting, by at least one first node, at least one WUS configuration to at least one second node, wherein the at least one WUS configuration comprises at least one of a threshold value, a timing advance offset, at least one cell ID, a root sequence index, SSB block power, a parameter indicating at least one of number and positions of the at least one SSB in a SSB burst, a PreambleConfiglndex, a RACH preamble, an RACH occasion and starting position of WUS in the frequency.

47. The method as claimed in claim 46, wherein the at least one WUS configuration further comprises at least one of a parameter indicating enabling of on demand SIB1 operation of a cell, scheduling information for WUS, a modulation and coding scheme (MCS), a SIB1 transmission pattern, power control parameters, at least one first CORESET, a parameter to indicate the accessibility of the cell for a type of at least one second node, a time offset with respect to a reference, a frequency offset with respect to the reference, an index of the orthogonal sequence, maximum number of WUS retransmissions attempts or a timer information for WUS retransmission.

48. The method as claimed in claim 47, wherein the index of orthogonal sequence is the starting index of the consecutive WUSs associated sequentially to the active beams or groups of beam of the cell.

49. The method as claimed in claim 47, wherein the scheduling information of the at least one WUS comprises at least one of a subcarrier spacing (SCS), time and frequency resources intended for the transmission of the at least one WUS signal, a subset of preamble formats, a subset of RACH occasions and a periodicity for WUS transmissions.

50. The method as claimed in claim 47, wherein the time offset indicate a starting time for the at least one WUS transmission by the at least one second node and the frequency offset indicate a starting frequency allocated for the at least one WUS transmission by the at least one second node.

51. The method as claimed in claim 47, wherein the time offset indicate a starting time for the reception of at least one SIB1 by the at least one second node and the frequency offset indicate a starting frequency allocated for the reception of at least one SIB1 by the at least one second node.

52. The method as claimed in claim 47, wherein the time offset is indicated in terms of at least one of a number of slots, number of symbols, number of subframe, number of frames, an index of slot, index of symbol, index of subframe and index of frame.

53. The method as claimed in claim 47, wherein the time resources is indicated in terms of at least one of a number of slots, number of symbols, number of subframe and number of frames.

54. The method as claimed in claim 47, wherein the scheduling information is indicated as an index from a predefined table containing a time and a frequency resources to transmit the at least one WUS signal by the at least one second node.

55. The method as claimed in claim 54, wherein the predefined table comprises at least one of a slot offset, a starting symbol index, a number of symbols, a start RB, a number of RBs, a preamble format, and a configuration of a preamble to transmit the at least one WUS signal.

56. The method as claimed in claim 55, wherein the preamble format is defined in a PRACHConfigurationlndex.

57. The method as claimed in claim 49, wherein the at least one of the time and the frequency resources indicates the association of at least one WUS with at least one of at least one cell and at least one beam.

58. The method as claimed in claim 47, wherein the SIB1 transmission pattern comprises at least one of a periodicity of at least one SIB 1 and a duration to monitor for the at least one SIB 1 by the at least one second node.

59. The method as claimed in claim 47, wherein the power control parameters is used to determine a transmit power of the at least one WUS signal, wherein the power control parameters include at least one of a power increment factor, an initial transmit power, a maximum transmit power of the at least one WUS signal, SSB block transmit power information.

60. The method as claimed in claim 47, wherein the at least one WUS configuration is one of at least one predefined value or transmitted in at least one of at least one SSB, at least one first DCI, a data channel.

61. The method as claimed in claim 60, wherein the at least one WUS configuration is provided by one of introducing at least one new bit in MIB or reusing at least one existing bit of the SSB.

62. The method as claimed in claim 61, wherein a separate processing of channel coding, Cyclic Redundancy Check (CRC), and rate matching is performed for the legacy MIB bits and the at least one new bit.

63. The method as claimed in claim 60, wherein the at least one new bit for the at least one WUS configuration is provided by adding a fifth symbol to the at least one SSB.

64. The method as claimed in claim 60, wherein the format of at least one of the at least one first DCI is one of a DCI format 1 0 and a new DCI format.

65. The method as claimed in claim 60, wherein the at least one WUS configuration is provided by using at least one of at least one reserved bit in the DCI format 1 0, reusing fields of the existing DCI format 1 0 or by newly defined parameters for scheduling the at least one WUS signal.

66. The method as claimed in claim 60, wherein the at least one of at least one first DCI is scrambled with one of a SI-RNTI and a new RNTI.

67. The method as claimed in claim 66, wherein the new RNTI is WUS-RNTI.

68. The method as claimed in claim 60, wherein the at least one first DCI is transmitted based on plurality of parameters.

69. The method as claimed in claim 68, wherein the plurality of parameters comprises at least one of interleaving, resource element group (REG) bundle Size, interleave size, shift index, cyclic Prefix, a number of cyclic redundancy check (CRC) bits, aggregation level, and precoding.

70. The method as claimed in claim 69, wherein the at least one of the plurality of parameters is at least one of predefined, and provided in at least one of the at least one SSB, at least one WUS configuration, MAC-CE, and RRC.

71. The method as claimed in claim 68, wherein at least one of the plurality of parameters have one of values same as that of corresponding parameters of DCI format 1 0 and new values, wherein the new values are higher than that of corresponding parameters of DCI format 1 0 scrambled with SI-RNTI.

72. The method as claimed in claim 60, wherein the at least one first DCI is received in at least one second CORESET.

73. The method as claimed in claim 47 and claim 72, wherein , at least one first CORESET and at least one second CORESET comprises at least one of a set of time resources, a set offrequency resources, a time offset with respect to a reference and a frequency offset with respect to a reference .

74. The method as claimed in claim 47, wherein the at least one first CORESET is configured to the at least one second node to monitor the at least one second DCI, wherein the at least one second DCI comprises scheduling information for transmission of at least one of an RAR of at least one WUS and at least one SIB 1.

75. The method as claimed in claim 47 and 72, wherein the at least one first CORESET and at least one second CORESET is same or different.

76. The method as claimed in claims 45 and 72 , wherein the at least one first CORESET and the at least one second CORESET comprises at least one subsection.

77. The method as claimed in claim 74, wherein the at least one subsection is used for independent monitoring by at least one second node of at least one of the at least one first DCI and at least one second DCI, wherein the at least one other DCI comprises scheduling information for transmission of at least one of an RAR for WUS and at least one SIB1.

78. The method as claimed in claim 72, wherein at least one of the at least one second CORESET is one of predefined and provided in one of at least one SSB, or MAC-CE or RRC.

79. The method as claimed in claim 76, wherein at least one subsection is one of predefined and provided in the at least one SSB, or the at least one WUS configuration, or MAC-CE or RRC.

80. The method as claimed in claim 72, wherein the CORESET is CORESETO.

81. The method as claimed in claim 47, wherein the reference is a resource related to one of at least one SSB, or at least one first DCI, or last symbol of reception of the at least one WUS configuration, or an RAR of WUS and WUS transmission.

82. The method as claimed in claim 60, wherein the at least one first DCI and at least one other DCI is one of same and different; wherein the at least one other DCI comprises scheduling information for transmission of at least one SIB1.

83. The method as claimed in claim 46, wherein the at least one first node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU).

84. The method as claimed in claim 46, wherein the at least one second node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS.

85. A method of transmission of an on demand system information block 1 (SIB1), the method comprises: transmitting, by at least first node, at least one SSB; splitting, by at least first node, at least one SIB 1 into first part and second part; transmitting, by the at least first node, at least one first DCI comprising the scheduling information of a first part of the at least one SIB1; transmitting, by the at least first node, the first part; receiving, by the at least one first node, a wake-up signal (WUS) for transmitting the second part of the at least one SIB1; transmitting, by the at least one first node, at least one of at least one second DCI and an RAR in response to the at least one WUS signal; transmitting, by the at least one first node, at least one third DCI comprising scheduling information of the second part of the at least one SIB1, and transmitting by the at least one first node, the second part.

86. The method as claimed in claim 85, wherein the first part of the at least one SIB1 comprising a configuration required for the transmission of a RACH preamble.

87. The method as claimed in claim 85, wherein the transmission of at least one of at least one RAR and at least one SIB1 is scheduled by at least one information contained in the first part of the at least one SIB 1 when at least one of the at least one first DCI and the at least one second DCI is not transmitted.

88. The method as claimed in claim 85, wherein the at least one first node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU).

89. The method as claimed in claim 85, wherein the at least one second node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS.

90. A method for receiving of an on demand system information block 1 (SIB1), the method comprises: receiving, by at least first node, at least one SSB; receiving, by the at least first node, at least one first DCI comprising the scheduling information of a first part of the at least one SIB1; receiving, by the at least first node, the first part; transmitting, by the at least one first node, at least one wake-up signal (WUS) for receiving the second part of the at least one SIB1; receiving, by the at least one first node, at least one of at least one second DCI and an RAR in response to the at least one WUS ; receiving, by the at least one first node, at least one third DCI comprising scheduling information of the second part of the at least one SIB1, and receiving, by the at least one first node, the second part.

91. The method as claimed in claim 90, wherein the first part of the at least one SIB1 comprising a configuration required for the transmission of a RACH preamble.

92. The method as claimed in claim 90, wherein the reception of at least one of at least one RAR and at least one SIB1 is scheduled by at least one information contained in the first part of the at least one SIB 1 when at least one of the at least one first DCI and the at least one second DCI is not transmitted by the at least one second node.93 . The method as claimed in claim 90, the at least one first node comprises a User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS.

94. The method as claimed in claim 92, wherein the at least one second node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU).

95. The method as claimed in claim 90, wherein if at least one first node doesn't receive the at least one WUS configuration, the at least one first node assumes one of the cell as barred and refrains from transmitting the at least one WUS or the on-demand SIB1 is disabled and performs legacy initial access procedures.

96. The method as claimed in claim 90 , wherein the at least one first node can access a cell using WUS based on a parameter provided by the at least one second node, wherein the parameter is set, whereas the at least one first node from other category, on detecting the parameter as set, will consider the cell as barred.

97. A method for on-demand transmission of signals, the method comprises: receiving , by at least one first node, at least one WUS configuration; transmitting, by at least one first node, at least one WUS to request reception of at least one SIB1; receiving, by at least one first node, at least one of at least one first DCI and an RAR in response to the at least one WUS signal; receiving, by at least one first node, at least one second DCI comprising scheduling information of the at least one SIB1; and receiving, by at least one first node, the at least one SIB1.

98. The method as claimed in claim 97, wherein the at least one WUS is transmitted upon receiving, at least one synchronization signal block (SSB) with strength crossing a threshold.

99. The method as claimed in claim 97, wherein the at least one WUS configuration comprises at least one information, wherein the at least one information contains at least one of a threshold value, a timing advance offset, at least one cell ID, a root sequence index, SSB block power, a parameter indicating at least one of number and positions of the at least one SSB in a SSB burst, a PreambleConfiglndex, a RACH preamble, an RACH occasion and starting position of WUS in the frequency.

100. The method as claimed in claim 97, wherein the at least one WUS is transmitted in periodic occasions, wherein the periodic occasions are one of a predefined, or provided by the at least one second node or based on at least one of the periodicity of the at least one SSB and a multiplexing transmission pattern between SSB and CORESETO.

101. The method as claimed in claim 97, wherein the at least one first and at least one second DCI is one of same and different.

102. The method as claimed in claim 97, wherein the at least one WUS is associated with at least one of : a group of cells within a network as a common WUS, an specific cell as a dedicated WUS; a group of SSB s within an SSB burst; an individual SSB of SSB burst as a dedicated WUS; and an individual SSB within an SSB group within an SSB burst, wherein the association is repeated across the groups for identical SSB indices.

103. The method as claimed in claim 97, wherein the at least one SIB1 is transmitted by the at least one second node in at least one of: at least one cell; and at least one beam.

104. The method as claimed in claim 102, wherein the association is predefined based on one of a predefined number of cells, or SSB groups or SSBs.

105. The method as claimed in claim 102, wherein the association of the at least one WUS at any instant is based on an active SSBs or active group of SSBs available at the instant from a predefined maximum number of SSBs or groups of SSBs, wherein the active SSBs or active group of SSBs available at the instant is determined using a bitmap, wherein the bitmap is provided by the at least one second node.

106. The method as claimed in claim 97, wherein the at least one WUS comprises one of at least one orthogonal sequence or at least one cell ID.

107. The method as claimed in claim 106, wherein the at least one orthogonal sequence is at least one of a Zad-off chu (ZC) sequence, a RACH preamble, PSS, and at least one SSS sequence.

108. The method as claimed in claim 97, wherein the at least one WUS is used as msgl for establishing RRC connection.

109. The method as claimed in claim 97, wherein the RAR contains at least one of information for time synchronization, identity of a UE, information for contention resolution, and scheduling information for at least one of UL transmission and DL reception.

110. The method as claimed in claim 98, wherein the at least one SSB comprises at least one parameter indicating enabling of on-demand reception of at least one SIB1, wherein the at least one parameter indicates whether the corresponding SIB1 reception is one of periodic based on legacy mechanism and based on the at least one WUS request.

111. The method as claimed in claim 102, wherein the association is based on one of a predefined association, or association provided by the at least one second node, or indices of the at least one orthogonal sequence, or at least one of time and frequency resources where the at least one WUS is received.

112. The method as claimed in claim 97, wherein receiving the at least one SIB1 is based on a pattern.

113. The method as claimed in claim 112, wherein the pattern comprises at least one of a periodicity of the at least one SIB1 and a duration to monitor for the at least one SIB1, wherein the periodicity depends on the SSB periodicity and multiplexing pattern between SSB and CORESETO.

114. The method as claimed in claim 97, wherein the reception of the at least one WUS configuration is in at least one of the at least one SSB, at least one third DCI, and a data channel.

115. The method as claimed in claim 99, wherein the at least one information is predefined.

116. The method as claimed in claim 97, wherein the at least one WUS is transmitted based on the at least one WUS configuration.

117. The method as claimed in claim 114, wherein the at least one WUS configuration is provided by the at least one second node, by one of introducing at least one new bit in MIB or reusing at least one existing bit of the SSB.

118. The method as claimed in claim 117, wherein a separate processing of channel coding, CRC, and rate matching is performed for the legacy MIB bits and the at least one new bit.

119. The method as claimed in claim 117, wherein the at least one new bit for the at least one WUS configuration is provided by adding a fifth symbol to the at least one SSB by the at least one second node.

120. The method as claimed in claims 97 and 114, wherein the at least one second DCI and at least one third DCI is one of same and different.

121. The method as claimed in claims 97 and 114, wherein the format of at least one of the at least one first DCI, the at least one second DCI and the at least one third DCI is one of a DCI format 1 0 and a new DCI format.

122. The method as claimed in claim 97 and 114, wherein the at least one of at least one first DCI, the at least one second DCI and at least one third DCI is scrambled with one of a SI- RNTI and a new RNTI.

123. The method as claimed in claim 122, wherein the new RNTI is the WUS-RNTI.

124. The method as claimed in claim 97 and 114, wherein the at least one of at least one first DCI, at least one second DCI, and at least one third DCI is received based on a plurality of parameters.

125. The method as claimed in claim 124, wherein the plurality of parameters comprises at least one of interleaving, resource element group (REG) bundle Size, interleave size, shiftindex, cyclic Prefix, a number of cyclic redundancy check (CRC) bits, aggregation level, and precoding.

126. The method as claimed in claim 124, wherein the at least one of the plurality of parameters is one of predefined, or provided by the atleast one second node in at least one of the at least one SSB, WUS configuration, MAC-CE, and RRC.

127. The method as claimed in claim 124, wherein at least one of the plurality of parameters have one of values same as that of corresponding parameters of DCI format 1 0 or new values, wherein the new values are higher than that of corresponding parameters of DCI format 1 0 scrambled with SI-RNTI.

128. The method as claimed in claim 97 and 114, wherein the at least one of the at least one first DCI, at least one second DCI and at least one third DCI is received in at least one CORESET, wherein the at least one CORESET comprises a set of time resources, a set of frequency resources, a time offset with respect to a reference and a frequency offset with respect to a reference.

129. The method as claimed in claim 128, wherein the at least one CORESET for transmitting at least one of the at least one first DCI, the at least one second DCI and the at least one third DCI is same or different.

130. The method as claimed in claim 128, wherein the at least one CORESET comprises at least one subsection.

131. The method as claimed in claim 130, wherein the at least one subsection is configured for independent monitoring by at least one second node of the at least one first DCI, the at least one second DCI, and the at least one third DCI.

132. The method as claimed in claims 128 and 130, wherein at least one of the at least one CORESET and at least one subsection is one of predefined and provided by the at least one second node in one of the at least one SSB, or WUS configuration, or MAC-CE or RRC.

133. The method as claimed in claim 128, wherein the CORESET is CORESETO.

134. The method as claimed in claim 97, wherein the at least one WUS configuration comprises a parameter indicating the accessibility of the cell for a certain type of at least one first node.

135. The method as claimed in claim 106 and 107, wherein the at least one of at least one SSS sequence and the at least one Cell ID are reserved for a cell during network deployment to be used as the at least one WUS.

136. The method as claimed in claim 97, wherein the at least one SIB1 reception overlaps with one of scheduled transmission and scheduled reception of at least one of at least one other signal and at least one other channel.

137. The method as claimed in claim 136, wherein the one of scheduled transmission and scheduled receptions are based on a set of priority rules.

138. The method as claimed in claim 137, wherein the set of priority rules is one of predefined and provided by the at least one second node.

139. The method as claimed in claim 137, wherein the set of priority rules is provided by the at least one second node in one of the at least one WUS configuration, or control channel, or MAC-CE and RRC.

140. The method as claimed in claim 136, wherein the at least one second node performs the at least one of the scheduled transmission and the scheduled reception based on the RAR.

141. The method as claimed in claim 97, wherein the at least one second node comprises one or more of at least one Base Station (BS), at least one Integrated Access and Backhaul (IAB) node, at least one relay, and at least one Distributed Unit (DU).

142. The method as claimed in claim 97, wherein the at least one first node comprises one or more of at least one User Equipment (UE), at least one IAB node, at least one DU, at least one Mobile Termination (MT) unit, at least one relay, and at least one BS.

143. The method as claimed in claim 97, wherein the at least one WUS configuration provided by the at least one second node further comprises at least one of a parameter indicating enablingof on demand SIB1 operation of a cell, scheduling information for WUS, a modulation and coding scheme (MCS), a SIB1 transmission pattern, power control parameters, at least one first CORESET, a parameter to indicate the accessibility of the cell for a type of at least one second node, a time offset with respect to a reference, a frequency offset with respect to the reference, an index of the orthogonal sequence, maximum number of WUS retransmissions attempts or a timer information for WUS retransmission.

144. The method as claimed in claim 97, wherein the at least one first node performs retransmission of the at least one WUS, with a power increment, by a power increment factor; wherein the at least one second node increases the at least one WUS transmission power until one of a maximum power limit or expiry of a timer.

145. The method as claimed in claim 143, wherein the index of orthogonal sequence is the starting index of the consecutive WUSs associated sequentially to the active beams or groups of beam of the cell.

146. The method as claimed in claim 143, wherein the scheduling information of the at least one WUS comprises at least one of a subcarrier spacing (SCS), time and frequency resources intended for the transmission of the at least one WUS, a subset of preamble formats, a subset of RACH occasions and a periodicity for WUS transmissions.

147. The method as claimed in claim 143, wherein the time offset indicates a starting time for the transmission of the at least one WUS and the frequency offset indicates a starting frequency allocated for the transmission of the at least one WUS.

148. The method as claimed in claim 143, wherein the time offset indicate a starting time for the reception of at least one SIB1 by the at least one first node and the frequency offset indicate a starting frequency allocated for the reception of at least one SIB1 by the at least one first node.

149. The method as claimed in claim 143, wherein the time offset is indicated in terms of at least one of a number of slots, number of symbols, number of subframe, number of frames, an index of slot, index of symbol, index of subframe and index of frame.

150. The method as claimed in claim 146, wherein the time resources is indicated in terms of at least one of a number of slots, number of symbols, number of subframe and number of frames.

151. The method as claimed in claim 143, wherein the scheduling information is indicated by the at least one second node as an index from a predefined table containing a time and a frequency resources to transmit the at least one WUS.

152. The method as claimed in claim 151, wherein the predefined table comprises at least one of a slot offset, a starting symbol index, a number of symbols, a start RB, a number of RBs, a preamble format, and a configuration of a preamble to transmit the at least one WUS.

153. The method as claimed in claim 152, wherein the preamble format is defined in a PRACHConfigurationlndex.

154. The method as claimed in claim 146, wherein the at least one of the time and the frequency resources indicates the association of at least one WUS with at least one of at least one cell and at least one beam.

155. The method as claimed in claim 143, wherein the SIB1 transmission pattern comprises at least one of a periodicity of at least one SIB 1 and a duration to monitor for the at least one SIB 1 by the at least one first node.

156. The method as claimed in claim 143, wherein the power control parameters is used to determine a transmit power of the at least one WUS, wherein the power control parameters include at least one of a power increment factor, an initial transmit power, a maximum transmit power of the at least one WUS, SSB block transmit power information.

157. The method as claimed in claim 97 , wherein the at least one WUS configuration is provided, by the at least one second node, by using at least one of at least one reserved bit in the DCI format 1 0, reusing fields of an existing DCI format 1 0 or by newly defined parameters for scheduling the at least one WUS.

158. The method as claimed in claim 143, wherein the reference is a resource related to one of at least one SSB, or at least one first DCI, or at least one second DCI, or at least one third DCI, or last symbol of reception of the at least one WUS configuration, or an RAR of WUS and WUS transmission.

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