UE-UE cross link interfernce management in a network enabled with subband full duplexing at the base station

Abstract

The present disclosure relates to a method of managing a cross link interference (CLI) in a network enabled with sub-band full duplexing (SBFD). The method implemented by a user equipment, being a victim equipment, comprising receiving at least one first configuration and at least one second configuration, wherein the at least one first configuration comprises, indication of frequency location of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation, and wherein the at least one second configuration comprises indication to report at least one of received signal strength indicator (RSSI) and reference signal received power (RSRP) as report quantity. The method further comprises measuring the report quantity and transmitting a report comprising the report quantity. The present disclosure further provides a method being implemented by a base station and aggressor user equipment in SBFD slots.

Description

UE-UE CROSS LINK INTERFERNCE MANAGEMENT IN A NETWORK ENABLED WITH SUBBAND FULL DUPLEXING AT THE BASE STATIONFIELD OF THE INVENTION

[0001] The present disclosure, generally, relates to a cross link interference management in a network. More particularly, the present disclosure relates to UE-UE cross link interference management in a network enabled with subband full duplexing (SBFD).BACKGROUND OF THE INVENTION

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

[0003] In subband full duplexing (SBFD) communication, a node (may also be referred to as user equipment “UE” or base station “BS”) can simultaneously perform both downlink (DL) and uplink (UL) operations in respective subbands (SB) within the same carrier frequency. A SB is a set of contiguous frequency resources within the carrier. One or more UL SB can be defined for UL operation and one or more DL SB can be defined for DL operation within a carrier. Both UL SB and DL SB can be active simultaneously over a certain time duration. For example, an SBFD capable base station (BS) can configure UL and DL SBs within a carrier to user equipments (UEs) and can configure the time resources where the subbands are active (also known as SBFD time resources). Further, in a SBFD time resource, the BS can simultaneously perform DL operation with one UE in resources within DL SB and UL operation with another UE in resources within UL SB. In general, the UE is expected to transmit in the resources within the UL SB and to receive in the resources within the DL SB, in an SBFD time resource. The SBs for DL and UL operations can be fully overlapping, partially overlapping or non-overlapping. Simultaneous operation of DL and UL in SBFD time resources can create additional interference in the system. The DL transmission from BS, in resources within DL SB, can interfere with UL reception, in resources within UL SB. Similarly,the transmission from UE in UL SB can interfere with DL reception of UE (either same or different from transmitting UE) in DL SB.

[0004] New radio (NR) technology supports flexible duplexing where the adjacent BSs can perform DL and UL in the same time frequency resources. The DL transmissions from one BS will interfere with the UL receptions at the other BS. Similar interference will also be encountered from one UE to the other. Thus, CLI will exist in the network. However, this CLI is slightly different from the CLI that exists in the case where the BSs are enabled with SBFD. The difference lies in the fact that in case of flexible duplexing, the CLI is within the same time-frequency resources, thus making it intra-SB CLI. However, the CLI due to SBFD is across DL and UL SBs, therefore making it inter-SB CLI. If CLI is not properly managed in the network, it will degrade the overall performance of the network.

[0005] Therefore, there is a need to provide a method for UE-UE cross link interference management in a network enabled with subband full duplexing at the base station.SUMMARY OF THE INVENTION

[0006] The summary is provided to introduce aspects related to management of cross link interference in network enabled with SBFD, and the aspects are further described below in the detailed description. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the claimed subject matter.

[0007] According to one embodiment, the present disclosure provides a method of managing a cross link interference (CLI) in a network enabled with sub-band full duplexing (SBFD). The method comprises the steps of receiving, by at least one first node, at least one first configuration and at least one second configuration, wherein the at least one first configuration comprises, indication of frequency location of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation, and wherein the at least one second configuration comprises indication to report at least one of received signal strength indicator (RSSI) and reference signal received power (RSRP) as report quantity. The method further comprises measuring, by the at least one first node, the report quantity, and transmitting, by the at least one first node, a report comprising the report quantity. In an embodiment, the first node is a victim user equipment.

[0008] In yet another embodiment, the present disclosure provides a method for managing a cross link interference (CLI) in a network enabled with sub-band full duplexing (SBFD). The method comprises the steps of receiving, by at least one first node, at least one first configuration and at least one second configuration wherein the at least one first configuration comprises, indication of at least one frequency location of at least one subband for SBFD operation and type of the at least one subband, and wherein the at least one second configuration comprises scheduling information to transmit at least one reference signal (RS) and an indication for priority. The method further comprises transmitting, by the at least one first node, at least one RS based on the scheduling information and the indication for priority. In this embodiment, the first node is an aggressor user equipment.

[0009] According to yet another embodiment, the present disclosure provides a method of managing a cross link interference (CLI) in a network enabled with sub-band full duplexing (SBFD). The method comprises configuring, by at least one second node, at least one first configuration and at least one second configuration, wherein the at least one first configuration comprises, indication of frequency location of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation, and wherein the at least one second configuration comprises indication to report at least one of received signal strength indicator (RSSI) and reference signal received power (RSRP) as report quantity, and type of at least one resource to measure the report quantity. The method further comprises receiving, by the at least one second node, a report comprising the report quantity. In this embodiment, the second node may be a base station (BS).BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0011] FIG. 1 illustrates a non-overlapping subbands for SBFD.

[0012] FIG. 2 illustrates cross link interference in a network;

[0013] FIG. 3 illustrates a method implemented by a victim user equipment (UE), for managing a cross link interference (CLI) in a network enabled with sub-band full duplexing (SBFD), according to an embodiment of the present disclosure;

[0014] FIG. 4 illustrates a method implemented by an aggressor user equipment (UE), for managing a cross link interference (CLI) in a network enabled with sub-band full duplexing (SBFD), according to an embodiment of the present disclosure;

[0015] FIG. 5 illustrates a method implemented by a base station enabled with sub-band full duplexing (SBFD), for managing a cross link interference (CLI) in a network, according to an embodiment of the present disclosure; and

[0016] FIG. 6 illustrates a general block diagram of the victim UE / the aggressor UE / the base station, according to an embodiment of the present disclosure.DETAILED DESCRIPTION OF THE INVENTION

[0017] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.

[0018] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. This disclosure may however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those of ordinary skill in the art. Moreover, all statements herein reciting embodiments of the disclosure, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure).

[0019] FIG. 1 illustrates a non-overlapping subbands for SBFD. In Fig. 1, the DL and UL SBs are non-overlapping in frequency domain and separated by a guard band. In this illustration, the frequency domain configuration of the slots 2, 3, 4, and 5 are known as “DUD” since anUL SB is sandwiched between 2 DL SBs. D represents the DL SB and U represents the UL SB. Here, the SBFD is active in slots 2-5 and are the SBFD time resources. Instead of this, the configuration could be “DU” or “UD” as well. In the case of a DL SB sandwiched between 2 UL SBs, the configuration will be “UDU”. Further, such slots or symbols with active SBs configured are termed as SBFD slots / symbols. A slot / symbol which does not have both DL and UL active SBs like slot 1 in Fig. 1, is known as a non-SBFD symbol / slot. Further, a base station (BS) configures a UE with the active UL SB as shown in Fig. 1. Further, the BS can also configure the active DL SBs and guard bands to the UEs so that the UEs have knowledge of both active DL and UL SBs. Similarly, other configurations like DU, UD or UDU can also be configured. The UEs are assumed to be half duplex. Therefore, they can perform either UL or DL at a time.

[0020] Fig. 2 shows a scenario where, 2 adjacent Base stations (BSs) operating with the same carrier frequency are enabled with SBFD operation. BS 1 serves UE 1 and BS 2 serves UE 2. BS 1 sends DL signals to UE 1 in the DL SB. UE 2 sends UL signals to BS 2 in the UL SB. The DL transmission from BS 1 in the DL SB will interfere with the UL reception in the UL SB at BS 2. This is termed as BS-BS cross link interference (CLI). Since, the CLI is between different SBs, it is also termed as inter-SB interference. Similarly, the UL transmissions from UE 2 will interfere with the DL reception at UE 1. This is termed as inter- SB UE-UE CLI. Further, inter-SB CLI will also exist within a cell of a BS. E.g., BS 1 receives UL in the UL SB from another UE within its own cell “UE 3”. The UL transmissions from UE 3 will interfere with the DL reception at UE 1. Thus, this is another case of inter-SB UE-UE CLI but within the same cell.

[0021] New radio (NR) technology supports flexible duplexing where the adjacent BSs can perform DL and UL in the same time frequency resources. Hence, the DL transmissions from one BS will interfere with the UL receptions at the other BS. Similar interference will also be encountered from one UE to the other. Thus, CLI will exist in the network. However, this CLI is slightly different from the CLI that exists in the case where the BSs are enabled with SBFD. The difference lies in the fact that in case of flexible duplexing, the CLI is within the same time frequency resources, thus making it intra-SB CLI. If CLI is not properly managed in the network, it will degrade the overall performance of the network.

[0022] In NR technology, a CLI management framework for UE-UE CLI was developed which consisted of measurement and reporting of CLI from the UE to the BS. In general, the UE which interferes with another UE is termed as the aggressor UE and the UE that got affected by the CLI is termed as the victim UE. In NR technology, the victim UE is configured by its serving BS to measure CLI. This mainly includes the resources on which the UE is supposed to measure the CLI, the type of CLI measurement: received signal strength indicator (RSSI) or reference signal received power (RSRP) and whether the report is periodical, or event triggered. In the case of RSSI measurement, the RSSI resource IDs are provided to the UE in RRC which serve as the measurement resources. In the case of RSRP measurement, the CLI reference signal (RS) resource IDs are provided to the UE. The CLLRS is the sounding reference signal (SRS). The UE receives the SRS and measures the RSRP. In case of periodical reporting, the UE is expected to report the CLI to the serving BS periodically. In the case of event triggered reporting, the UE measures the CLI, and if it goes above a given threshold, it reports the CLI. All reports are L3 reports. The base station was not enabled with SBFD. Hence, the CLI from one UE to the other would be co-channel intra-SB CLI, where the UL transmissions from one UE would interfere with the DL reception at another UE in the same time frequency resources.

[0023] The CLI management framework was developed focusing on flexible duplexing. Hence, it needs to be enhanced to manage the CLI in a network where BSs are enabled with SBFD. When SBFD is enabled in the network, the UE-UE CLI is from the transmissions in UL SB from one UE to the receptions in DL SB of another UE. Thus, it is co-channel inter-SB CLI. The victim UE needs to measure the CLI in its DL SB that comes from the transmissions in the UL SB by another UE. In the case of RSSI measurement, RSSI resources can be provided in the DL SB where the UE can measure the CLI. However, RSSI is only a measurement of the CLI strength. It will not provide any information about the aggressor UE. To know the aggressor UE ID, RSRP on SRS needs to be measured. The aggressor UE transmits the SRS in the UL SB and the victim UE should receive SRS in UL SB and measure RSRP.

[0024] Thus, to measure RSRP, the victim UE needs to receive and measure in the UL SB. The CLI management procedure does not support this as all receptions and measurements are allowed to be performed only in DL resources. Also, based on NR, the UE is configured to transmit SRS, therefore UE is not expected to receive SRS. Further, the UE needs to extrapolate the measured RSRP in the UL SB to the DL SB and report that to the BS. Another way of handling this can be, the aggressor UE is configured to transmit SRS in the DL SB so that thevictim UE can measure the RSRP in the DL SB itself. Further, in NR technology UE-UE CLI management framework, beam specific CLI measurement is not defined. The CLI will vary across different receive beams at the UE. Thus, CLI measurement should be performed in a beam specific manner. Further, the inter-SB CLI will not be uniform across the whole DL SB. The CLI will be more towards the edge of the DL SB that is nearer to the UL SB as compared to the rest of the DL SB. Hence, there is a need to measure and report the CLI for each CLI SB within the DL SB, where CLI SB is defined as a contiguous set of frequency resources within the DL SB for which the CLI is measured.

[0025] The present invention deals with the methods to manage CLI in a network where SBFD is enabled.

[0026] FIG. 3 illustrates a method implemented by a victim user equipment (UE) (referred to as first node), for managing a cross link interference (CLI) in a network enabled with subband full duplexing (SBFD), according to an embodiment of the present disclosure. In general, the method of the present disclosure involves reception of CLLRS, measurement of the CLI and reporting of the CLI.

[0027] In Step 301, a first node receives first configuration and second configuration. In one embodiment, the at least one first configuration comprises, indication of frequency location of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation. Similarly, the at least one second configuration comprises indication to report at least one of received signal strength indicator (RSSI) and reference signal received power (RSRP) as report quantity. In an embodiment, the at least one first configuration and the at least one second configuration is received using RRC message. In a further embodiment, receiving the at least one first configuration and the at least one second configuration further comprises receiving at least one reference signal.

[0028] In an embodiment, the at least one second configuration comprises at least one of (i) first scheduling information of at least one reference signal (RS) for measuring the report quantity, (ii) second scheduling information for transmitting the report, (iii) type of the report, (iv) type of the at least one resource to measure the report quantity, (v) number of the report quantities to be reported, (vi) order of arranging the value of report quantities in the report, (vii) information about subband reporting, (viii) at least one information about beam formeasurement, (ix) an indication for priority, (x) type of report quantity, and (xi) at least one condition for reporting. In an embodiment, receiving the at least one second configuration is using at least one of (a) CSI report configuration, (b) CSI resource configuration, and (c) SRS resource configuration.

[0029] In yet another embodiment, the information about the subband reporting comprises at least one of (a) size of the subband, (b) granularity of a resource in the subband, (c) number of resources in the subband, and (d) indication to transmit report quantity in subband level. The granularity of the resource is one of PRB and RBG. In an embodiment, the order of arranging the value of report quantities is one of increasing order or decreasing order or predetermined order. Further, the at least one condition for reporting is based on a threshold value, which may be one of (a) received using at least one of RRC message, (b) MAC-CE and DCI, and (c) predefined.

[0030] In an embodiment, the at least one information about beam for measurement is received as a radio resource control (RRC) message using SRS-spatialRelationlnfo information element (IE).

[0031] Further, the indication for priority is for enabling at least one of (a) reception of the at least one RS in at least one UL resource for SBFD operation, and (b) reception of a sounding reference signal (SRS). Furthermore, the type of the report quantity is at least one of (a) single wideband report quantity, (b) a report quantity per at least one DE resource for SBFD operation, and (c) a report quantity per at least one UE resource for SBFD operation.

[0032] In yet another embodiment, the at least one second configuration further comprises (a) determining the size of the subband, (b) dividing one of the at least one DL resource for SBFD operation, the at least one UL resource for SBFD operation, DL usable PRBs, UL usable PRBs, into plurality of subbands, and (c) measuring the report quantity in at least one active subband from the plurality of subbands. The at least one active subband may be received by the at least one first node. In an embodiment, the at least one PRB of the at least one active subband may overlap with one of DL usable PRBs and UL usable PRBs. Further, determining size of the subband is based on number of PRBs in one of (a) the at least one DL resource for SBFD operation, (b) DL usable PRBs, (c) the at least one UL resource for SBFD operation, (d) UL usable PRBs, and (e) Active BWP.

[0033] In an embodiment, at least one information about beam for measurement comprises at least one of (a) at least one identity of one of a SRS resource and a CSI-RS resource, (b) at least one identity of one of a SRS resource set and a CSI-RS resource set, (c) a starting time resource, (d) at least one applicable time resource, and (e) at least one periodicity.

[0034] The first scheduling information comprises at least one of (i) identity of the at least one RS, (ii) at least one time resource occupied by the at least one RS, (iii) at least one frequency resource occupied by the at least one RS, (iv) an indication for priority, and (v) type of the at least one RS, wherein the type is one of periodic, aperiodic and semipersistent. In an embodiment, the at least one reference signal (RS) is at least one of sounding reference signal (SRS), channel state information reference signal (CSI-RS) and positioning reference signal. In an embodiment, the type of the report comprises one of periodic, aperiodic, and semi persistent. In a further embodiment, the type of the at least one resource to measure the report quantity is at least one of (a) at least one DL resource for SBFD operation and (b) at least one UL resource for SBFD operation.

[0035] In an embodiment, the first scheduling information may be a bitmap.

[0036] In an embodiment, the at least one first node transmits at least one capability information. The capability information comprises at least one of (a) capability to measure the report quantity in at least one UL resource for SBFD operation, (b) capability to extrapolate measured report quantity in at least one first frequency resource to at least one second frequency resource, and (c) capability to measure the report quantity simultaneously across plurality of resources for SBFD operation.

[0037] In Step 302, the at least one first node measures the report quantity. The report may be event triggered. In an embodiment, the step of measuring the report quantity further comprises extrapolating the measured report quantity in at least one first frequency resource to at least one second frequency resource, wherein one of (a) the at least one first frequency resource overlaps with at least one DL resource for SBFD operation and the at least one second frequency resource overlaps with at least one UL resource for SBFD operation, and (b) the at least one first frequency resource overlaps with at least one UL resource for SBFD operation and the at least one second frequency resource overlaps with at least one DL resource for SBFD operation.

[0038] In an embodiment, the measuring, by the at least one first node, is in one of (a) at least one resource overlapping with the at least one UL resource for SBFD operation, (b) at least one resource overlapping with the at least one DL resource for SBFD operation, and (c) at least one resource derived by excluding the frequency resources outside DL usable PRBs. The DL usable PRBs may comprise at least one PRB in DL-BWP overlapping with the at least one DL resource for SBFD operation in SBFD time resource. Further, the at least one resource is received by the at least one first node in first scheduling information of at least one reference signal (RS) for measuring the report quantity. In an embodiment, the measuring the report quantity is in at least one resource in active DL BWP.

[0039] In an embodiment, the report quantity comprises at least one of (a) at least one value, and (b) at least one identity of at least one reference signal used for measurement. In yet another embodiment, the at least one value is at least one of (a) a single value of the report quantity measured across one of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation, (b) largest value measured, (c) smallest value measured, and (d) difference of at least one measured value from one of largest value and smallest value.

[0040] In yet another embodiment, the at least one value is obtained by measuring the report quantity in one of (a) discontinuous frequency resources in one of the at least one DL resource for SBFD operation and the at least one UL resource for SBFD operation, and (b) plurality of subbands within one of the at least one DL resource for SBFD operation and the at least one UL resource for SBFD operation.

[0041] In Step 303, a report comprising the report quantity is transmitted to the base station by the at least one first node. The step of transmitting the report is based on a threshold value, wherein the report quantity is one of higher and lower than the threshold value.

[0042] FIG. 4 illustrates another embodiment of a method implemented by an aggressor user equipment (UE) (referred to a first node), for managing a cross link interference (CLI) in a network enabled with sub-band full duplexing (SBFD).

[0043] In Step 401, the first node being the aggressor user equipment (UE), receives a first configuration and a second configuration, wherein the first configuration comprises indication of frequency location of at least one subband for SBFD operation and type of the at least one subband, and the second configuration comprises scheduling information to transmit at leastone reference signal (RS) and an indication for priority. The indication for priority is at least one of (a) the at least one RS is for CLI measurement, (b) the at least one RS is CSI-RS, and(c) the scheduling information overlaps with DL subband. In an embodiment, the indication for priority is for enabling transmission in DL subband. In a further embodiment, the at least one RS is at least one of sounding reference signal (SRS), channel state information reference signal (CSI-RS) and positioning reference signal.

[0044] In one embodiment, the step of receiving the at least one first configuration and the at least one second configuration is using RRC message. In another embodiment, the step of receiving the at least one second configuration is using at least one of (a) CSI report configuration, (b) CSI resource configuration, and (c) SRS resource configuration. Further, receiving the at least one second configuration further comprises receiving an indication to start transmission of the at least one RS.

[0045] In an embodiment, the scheduling information to transmit the at least one RS comprises at least one of (a) identity of the at least one RS, (b) at least one time resource occupied by the at least one RS, (c) at least one frequency resource occupied by the at least one RS, (d) type of the at least one RS; wherein the type is one of periodic, aperiodic and semipersistent, (e) periodicity of transmission of the at least one RS, (f) at least one information about beam for transmitting the at least one RS, and (g) type of the at least one subband for transmitting the at least one RS. In an embodiment, at least one RS overlaps with at least one of UL subband, UL usable PRBs, DL subband and DL usable PRBs.

[0046] In an embodiment, the at least one information about beam comprises at least one of (a) at least one identity of one of a SRS resource and a CSI-RS resource, (b) at least one identity of one of a SRS resource set and a CSI-RS resource set, (c) a starting time resource,(d) at least one applicable time resource, and (e) at least one periodicity. Further, the at least one information about beam is received as a radio resource control (RRC) message using SRS- spatialRelationlnfo information element (IE). In yet another embodiment, the type of the at least one subband comprises one of DL subband, UL subband, and guard band.

[0047] In Step 402, the first node transmits at least one RS based on the scheduling information and the indication for priority.

[0048] In an embodiment, transmitting the at least one RS is in at least one resource in DL subband. In another embodiment, transmitting the at least one RS is in at least one resource in active UL BWP. The at least one RS may overlaps with at least one of UL subband, UL usable PRBs, DL subband and DL usable PRBs, wherein (a) the DL usable PRBs comprise at least one PRB in configured DL-BWP overlapping with a DL subband for SBFD operation in SBFD time resource, and (b) the UL usable PRBs comprise at least one PRB in configured UL-BWP overlapping with a UL subband for SBFD operation in SBFD time resource.

[0049] In another embodiment, the method comprises transmitting the at least one RS is in an SBFD time resource.

[0050] FIG. 5 illustrates a method implemented by a base station enabled with sub-band full duplexing (SBFD), for managing a cross link interference (CLI) in a network, according to an embodiment of the present disclosure.

[0051] In Step 501, at least one second node configures at least one first configuration and at least one second configuration, wherein the at least one first configuration comprises, indication of frequency location of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation, and wherein the at least one second configuration comprises indication to report at least one of received signal strength indicator (RSSI) and reference signal received power (RSRP) as report quantity, and type of at least one resource to measure the report quantity.

[0052] In an embodiment, the type of the at least one resource to measure the report quantity is at least one of (a) at least one DL resource for SBFD operation and (b) at least one UL resource for SBFD operation.

[0053] In an embodiment, the at least one second configuration comprises at least one of (a) first scheduling information of at least one reference signal (RS) for measuring the report quantity, (b) second scheduling information for transmitting the report, (c) type of the report, (d) number of the report quantities to be reported, (e) order of arranging the value of report quantities in the report, (f) information about subband reporting, (g) at least one information about beam for measurement, (h) an indication for priority, (i) type of report quantity, and (j) at least one condition for reporting.

[0054] In an embodiment, the at least one information about beam for measurement comprises at least one of (a) at least one identity of one of a SRS resource and a CSI-RS resource, (b) at least one identity of one of a SRS resource set and a CSI-RS resource set, (c) a starting time resource, (d) at least one applicable time resource, and (e) at least one periodicity. In yet another embodiment, the at least one information about beam for measurement is received as a radio resource control (RRC) message using SRS-spatialRelationlnfo information element (IE).

[0055] In an embodiment, the first scheduling information comprises at least one of (a) identity of the at least one RS, (b) at least one time resource occupied by the at least one RS, (c) at least one frequency resource occupied by the at least one RS, (d) an indication for priority, and (e) type of the at least one RS, wherein the type is one of periodic, aperiodic and semipersistent. The at least one RS is at least one of sounding reference signal (SRS), channel state information reference signal (CSI-RS) and positioning reference signal. Further, the type of the report comprises one of periodic, aperiodic, and semi persistent.

[0056] In an embodiment, the information about the subband reporting comprises at least one of (a) size of the subband, (b) granularity of a resource in the subband, (c) number of resources in the subband, and (d) indication to transmit report quantity in subband level. The granularity of the resource is one of PRB and RBG. In an embodiment, the order of arranging the value of report quantities is one of increasing order or decreasing order or predetermined order. Further, the at least one condition for reporting is based on a threshold value, wherein the threshold value is one of (a) transmitted using at least one of RRC message, MAC-CE and DCI, and (b) predefined.

[0057] In yet another embodiment, the indication for priority is for enabling at least one first node to at least one of (a) transmit the at least one RS in at least one DE resource for SBFD operation, (b) receive the at least one RS in at least one UE resource for SBFD operation and (c) receive a sounding reference signal (SRS).

[0058] In yet another embodiment, the type of the report quantity is at least one of (a) single wideband report quantity, (b) a report quantity per at least one DL resource for SBFD operation, and (c) a report quantity per at least one UL resource for SBFD operation. The type of the report quantity is configured in RRC message using ReportConfigNR information element.

[0059] In an embodiment, the step 501 further comprises indicating a rate matching pattern for the at least one resource, wherein the at least one resource comprises at least one of (a) at least one time resource occupied by at least one reference signal (RS), and (b) at least one frequency resource occupied by the at least one reference signal (RS). Further, at least one of transmission and reception in the at least one resource is skipped.

[0060] In an embodiment, the step of configuring the at least one first configuration and the at least one second configuration further comprises at least one of (a) transmitting at least one reference signal, and (b) indicating at least one active subband for computing the report quantity. At least one PRB of the at least one active subband overlaps with one of DL usable PRBs and UL usable PRBs, wherein (a) the DL usable PRBs comprise at least one PRB in DL- BWP overlapping with the at least one DL resource for SBFD operation in SBFD time resource, and (b) the UL usable PRBs comprise at least one PRB in UL-BWP overlapping with the at least one UL resource for SBFD operation in SBFD time resource.

[0061] In an embodiment, configuring the at least one second configuration is using at least one of (a) CSI report configuration, (b) CSI resource configuration, and (c) SRS resource configuration. In an embodiment, configuring the at least one first configuration and the at least one second configuration is using RRC message. In yet another embodiment, the Step 501 comprises receiving, by the at least one second node, at least one capability information which comprises at least one of (a) capability of at least one first node to measure the report quantity in at least one UL resource for SBFD operation, (b) capability of at least one first node to extrapolate measured report quantity in at least one first frequency resource to at least one second frequency resource, and (c) capability of at least one first node to measure the report quantity simultaneously across plurality of resources for SBFD operation.

[0062] In Step 502, the at least one second node receives a report comprising the report quantity. In an embodiment, the second node is a base station. The report quantity may comprises at least one of (a) at least one value, and (b) at least one identity of at least one reference signal used for measurement. Further, the at least one value is at least one of (a) a single value of the report quantity measured across one of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation, (b) largest value measured, (c) smallest value measured, and (d) difference of at least one measured value from one of largest value and smallest value.

[0030] Figure 6 illustrates a general block diagram of the victim UE / the aggressor UE / the base station, according to an embodiment of the present disclosure.

[0031] In an example, the victim UE 600a / the aggressor UE 600b / the base station 600c includes a processor(s) that may be a single processing unit or a number of units, all of which could include multiple computing units. The processing unit 601 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 processing unit 601 is configured to fetch and execute computer-readable instructions and data stored in the memory 602.

[0032] The memory 602 may include any non-transitory computer-readable medium known in the art including, for example, volatile memory, such as static random access memory (SRAM) and dynamic random access memory (DRAM), and / or non-volatile memory, such as read-only memory (ROM), erasable programmable ROM, flash memories, hard disks, optical disks, and magnetic tapes.

[0033] In an example, the module(s), engine(s), and / or unit(s) 604 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) 604 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) 604 when executed by the processor(s) 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).

[0034] As a further example, the database 603 may be implemented with integrated hardware and software. The hardware may include a hardware disk controller withprogrammable search capabilities or a software system running on general -purpose hardware. Examples of databases 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), and the modules / engines / units 604.

[0035] As a further example, the network interface 605 is configured to provide and establish communication with any electronic device via a public network, private network, or any wireless communication technology.

[0036] In the above detailed description, reference is made to the accompanying drawings that form a part thereof, and illustrate the best mode presently contemplated for carrying out the invention. However, such description should not be considered as any limitation of scope of the present invention. The structure thus conceived in the present description is susceptible of numerous modifications and variations, all the details may furthermore be replaced with elements having technical equivalence.

Claims

WE CLAIM:

1. A method of managing a cross link interference (CLI) in a network enabled with subband full duplexing (SBFD), the method comprising: receiving, by at least one first node, at least one first configuration and at least one second configuration, wherein the at least one first configuration comprises, indication of frequency location of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation, and wherein the at least one second configuration comprises indication to report at least one of received signal strength indicator (RS SI) and reference signal received power (RSRP) as report quantity; measuring, by the at least one first node, the report quantity; and transmitting, by the at least one first node, a report comprising the report quantity.

2. The method as claimed in claim 1, wherein the at least one second configuration comprises at least one of a. first scheduling information of at least one reference signal (RS) for measuring the report quantity, b. second scheduling information for transmitting the report, c. type of the report, d. type of the at least one resource to measure the report quantity, e. number of the report quantities to be reported, f. order of arranging the value of report quantities in the report, g. information about subband reporting, h. at least one information about beam for measurement, i. an indication for priority, j. type of report quantity, and k. at least one condition for reporting.

3. The method as claimed in claim 2, wherein the first scheduling information comprises at least one of a. identity of the at least one RS b. at least one time resource occupied by the at least one RSc. at least one frequency resource occupied by the at least one RS, d. an indication for priority, and e. type of the at least one RS; wherein the type is one of periodic, aperiodic and semipersistent.

4. The method as claimed in claim 2, wherein the at least one RS is at least one of sounding reference signal (SRS), channel state information reference signal (CSI-RS) and positioning reference signal.

5. The method as claimed in claim 2, wherein the type of the report comprises one of periodic, aperiodic, and semi persistent.

6. The method as claimed in claim 2, wherein the type of the at least one resource to measure the report quantity is at least one of a. at least one DL resource for SBFD operation and b. at least one UL resource for SBFD operation.

7. The method as claimed in claim 2, wherein the first scheduling information is a bitmap.

8. The method as claimed in claim 1, wherein receiving the at least one second configuration is using at least one of a. CSI report configuration, b. CSI resource configuration, and c. SRS resource configuration.

9. The method as claimed in claim 1, wherein the report is event triggered.

10. The method as claimed in claim 1, wherein measuring the report quantity further comprises extrapolating the measured report quantity in at least one first frequency resource to at least one second frequency resource.

11. The method as claimed in claim 10, wherein one ofa. the at least one first frequency resource overlaps with at least one DL resource for SBFD operation and the at least one second frequency resource overlaps with at least one UL resource for SBFD operation; and b. the at least one first frequency resource overlaps with at least one UL resource for SBFD operation and the at least one second frequency resource overlaps with at least one DL resource for SBFD operation.

12. The method as claimed in claim 1, wherein receiving the at least one first configuration and the at least one second configuration is using RRC message.

13. The method as claimed in claim 1, wherein transmitting the report is based on a threshold value; wherein the report quantity is one of higher and lower than the threshold value.

14. The method as claimed in claim 1 , comprises transmitting, by the at least one first node, at least one capability information.

15. The method as claimed in claim 14, wherein the at least one capability information comprises at least one of a. capability to measure the report quantity in at least one UL resource for SBFD operation, b. capability to extrapolate measured report quantity in at least one first frequency resource to at least one second frequency resource, and c. capability to measure the report quantity simultaneously across plurality of resources for SBFD operation.

16. The method as claimed in claim 1, wherein the measuring is in one of a. at least one resource overlapping with the at least one UL resource for SBFD operation b. at least one resource overlapping with the at least one DL resource for SBFD operation; and c. at least one resource derived by excluding the frequency resources outside DL usable PRBs.

17. The method as claimed in claim 16, wherein the DL usable PRBs comprise at least one PRB in DL-BWP overlapping with the at least one DL resource for SBFD operation in SBFD time resource.

18. The method as claimed in claim 16, wherein the at least one resource is received by the at least one first node in first scheduling information of at least one reference signal (RS) for measuring the report quantity.

19. The method as claimed in claim 2, wherein the at least one information about beam for measurement comprises at least one of a. at least one identity of one of a SRS resource and a CSLRS resource, b. at least one identity of one of a SRS resource set and a CSLRS resource set, c. a starting time resource, d. at least one applicable time resource, and e. at least one periodicity.

20. The method as claimed in claim 2, wherein the at least one information about beam for measurement is received as a radio resource control (RRC) message using SRS- spatialRelationlnfo information element (IE).

21. The method as claimed in claim 1, wherein the report quantity comprises at least one of a. at least one value, and b. at least one identity of at least one reference signal used for measurement.

22. The method as claimed in claim 21, wherein the at least one value is at least one of a. a single value of the report quantity measured across one of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation b. largest value measured c. smallest value measured, and d. difference of at least one measured value from one of largest value and smallest value.

23. The method as claimed in claim 21, wherein the at least one value is obtained by measuring the report quantity in one of a. discontinuous frequency resources in one of the at least one DL resource for SBFD operation and the at least one UL resource for SBFD operation, and b. plurality of subbands within one of the at least one DL resource for SBFD operation and the at least one UL resource for SBFD operation.

24. The method as claimed in claim 2, wherein the information about the subband reporting comprises at least one of ar size of the subband, b. granularity of a resource in the subband, c. number of resources in the subband, and d. indication to transmit report quantity in subband level.

25. The method as claimed in claim 24, wherein the granularity of the resource is one of PRB and RBG.

26. The method as claimed in claim 2, wherein the at least one second configuration further comprises a. determining the size of the subband b. dividing one of the at least one DL resource for SBFD operation, the at least one UL resource for SBFD operation, DL usable PRBs, UL usable PRBs, into plurality of subbands, and c. measuring the report quantity in at least one active subband from the plurality of subbands.

27. The method as claimed in claim 26, wherein the at least one active subband is received by the at least one first node.

28. The method as claimed in claim 26, wherein the at least one PRB of the at least one active subband overlaps with one of DL usable PRBs and UL usable PRBs.

29. The method as claimed in claim 26, wherein determining size of the subband is based on number of PRBs in one ofa. the at least one DL resource for SBFD operation, b. DL usable PRBs, c. the at least one UL resource for SBFD operation, d. UL usable PRBs, and e. Active BWP30. The method as claimed in claim 2, wherein order of arranging the value of report quantities is one of increasing order or decreasing order or predetermined order.

31. The method as claimed in claim 2, wherein the at least one condition for reporting is based on a threshold value.

32. The method as claimed in claim 31, wherein the threshold value is one of a. received using at least one of RRC message, MAC-CE and DCI, and b. predefined.

33. The method as claimed in claim 1, wherein receiving the at least one first configuration and the at least one second configuration further comprises receiving at least one reference signal.

34. The method as claimed in claim 1, wherein the measuring the report quantity is in at least one resource in active DL BWP.

35. The method as claimed in claim 2 or 3 , wherein the indication for priority is for enabling at least one of a. reception of the at least one RS in at least one UL resource for SBFD operation, and b. reception of a sounding reference signal (SRS).

36. The method as claimed in claim 2, wherein the type of the report quantity is at least one of a. single wideband report quantity, b. a report quantity per at least one DL resource for SBFD operation, and c. a report quantity per at least one UL resource for SBFD operation.

37. A method of managing a cross link interference (CLI) in a network enabled with subband full duplexing (SBFD), the method comprising receiving, by at least one first node, at least one first configuration and at least one second configuration wherein the at least one first configuration comprises, indication of at least one frequency location of at least one subband for SBFD operation and type of the at least one subband, and wherein the at least one second configuration comprises scheduling information to transmit at least one reference signal (RS) and an indication for priority; and transmitting, by the at least one first node, at least one RS based on the scheduling information and the indication for priority.

38. The method as claimed in claim 37, wherein transmitting the at least one RS is in at least one resource in DL subband.

39. The method as claimed in claim 37, wherein the indication for priority is for enabling transmission in DL subband.

40. The method as claimed in claim 37, wherein the at least one RS is at least one of sounding reference signal (SRS), channel state information reference signal (CSLRS) and positioning reference signal.

41. The method as claimed in claim 37, wherein receiving the at least one second configuration is using at least one of a. CSI report configuration, b. CSI resource configuration, and c. SRS resource configuration.

42. The method as claimed in claim 37, wherein receiving the at least one first configuration and the at least one second configuration is using RRC message.

43. The method as claimed in claim 37, wherein the scheduling information to transmit the at least one RS comprises at least one ofa. identity of the at least one RS b. at least one time resource occupied by the at least one RS c. at least one frequency resource occupied by the at least one RS d. type of the at least one RS; wherein the type is one of periodic, aperiodic and semipersistent e. periodicity of transmission of the at least one RS f. at least one information about beam for transmitting the at least one RS, and g. type of the at least one subband for transmitting the at least one RS.

44. The method as claimed in claim 43, wherein the at least one information about beam comprises at least one of a. at least one identity of one of a SRS resource and a CSI-RS resource, b. at least one identity of one of a SRS resource set and a CSI-RS resource set, c. a starting time resource, d. at least one applicable time resource, and e. at least one periodicity.

45. The method as claimed in claim 43, wherein the at least one information about beam is received as a radio resource control (RRC) message using SRS-spatialRelationlnfo information element (IE).

46. The method as claimed in claim 37, wherein the type of the at least one subband comprises one of DL subband, UL subband, and guard band.

47. The method as claimed in claim 37, wherein receiving the at least one second configuration further comprises receiving an indication to start transmission of the at least one RS.

48. The method as claimed in claim 37, wherein transmitting the at least one RS is in at least one resource in active UL BWP.

49. The method as claimed in claim 37, wherein the at least one RS overlaps with at least one of UL subband, UL usable PRBs, DL subband and DL usable PRBs.

50. The method as claimed in claim 49, wherein a. the DL usable PRBs comprise at least one PRB in configured DL-BWP overlapping with a DL subband for SBFD operation in SBFD time resource; and b. the UL usable PRBs comprise at least one PRB in configured UL-BWP overlapping with a UL subband for SBFD operation in SBFD time resource.

51. The method as claimed in claim 1, wherein transmitting the at least one RS is in an SBFD time resource.

52. The method as claimed in claim 1, wherein the indication for priority is at least one of a. the at least one RS is for CLI measurement, b. the at least one RS is CSLRS, and c. the scheduling information overlaps with DL subband.

53. A method of managing a cross link interference (CLI) in a network enabled with subband full duplexing (SBFD), the method comprising configuring, by at least one second node, at least one first configuration and at least one second configuration wherein the at least one first configuration comprises, indication of frequency location of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation, and wherein the at least one second configuration comprises indication to report at least one of received signal strength indicator (RSSI) and reference signal received power (RSRP) as report quantity, and type of at least one resource to measure the report quantity; and receiving, by the at least one second node, a report comprising the report quantity.

54. The method as claimed in claim 53, wherein the type of the at least one resource to measure the report quantity is at least one of a. at least one DL resource for SBFD operation and b. at least one UL resource for SBFD operation.

55. The method as claimed in claim 53, further comprises indicating a rate matching pattern for the at least one resource.

56. The method as claimed in claim 55, wherein the at least one resource comprises at least one of a. at least one time resource occupied by at least one reference signal (RS), and b. at least one frequency resource occupied by the at least one reference signal (RS).

57. The method as claimed in claim 55, further comprises skipping at least one of transmission and reception in the at least one resource.

58. The method as claimed in claim 53, wherein the at least one second configuration comprises at least one of a. first scheduling information of at least one reference signal (RS) for measuring the report quantity, b. second scheduling information for transmitting the report, c. type of the report, d. number of the report quantities to be reported, e. order of arranging the value of report quantities in the report, f. information about subband reporting, g. at least one information about beam for measurement, h. an indication for priority, i. type of report quantity, and j. at least one condition for reporting.

59. The method as claimed in claim 58, wherein the first scheduling information comprises at least one of a. identity of the at least one RS b. at least one time resource occupied by the at least one RS c. at least one frequency resource occupied by the at least one RS, d. an indication for priority, and e. type of the at least one RS; wherein the type is one of periodic, aperiodic and semipersistent.

60. The method as claimed in claim 58, wherein the at least one RS is at least one of sounding reference signal (SRS), channel state information reference signal (CSI-RS) and positioning reference signal.

61. The method as claimed in claim 58, wherein the type of the report comprises one of periodic, aperiodic, and semi persistent.

62. The method as claimed in claim 58, wherein the information about the subband reporting comprises at least one of a? size of the subband, b. granularity of a resource in the subband, c. number of resources in the subband, and d. indication to transmit report quantity in subband level.

63. The method as claimed in claim 62, wherein the granularity of the resource is one of PRB and RBG.

64. The method as claimed in claim 58, wherein order of arranging the value of report quantities is one of increasing order or decreasing order or predetermined order.

65. The method as claimed in claim 58, wherein the at least one condition for reporting is based on a threshold value.

66. The method as claimed in claim 65, wherein the threshold value is one of a. transmitted using at least one of RRC message, MAC-CE and DCI, and b. predefined.

67. The method as claimed in claim 58 or 59, wherein the indication for priority is for enabling at least one first node to at least one of a. transmit the at least one RS in at least one DL resource for SBFD operation, b. receive the at least one RS in at least one UL resource for SBFD operation and c. receive a sounding reference signal (SRS).

68. The method as claimed in claim 58, wherein the type of the report quantity is at least one of a. single wideband report quantity, b. a report quantity per at least one DL resource for SBFD operation, and c. a report quantity per at least one UL resource for SBFD operation.

69. The method as claimed in claim 58, wherein the type of the report quantity is configured in RRC message using ReportConfigNR information element.

70. The method as claimed in claim 53, wherein configuring the at least one first configuration and the at least one second configuration further comprises at least one of a. transmitting at least one reference signal, and b. indicating at least one active subband for computing the report quantity71. The method as claimed in claim 70, wherein the at least one PRB of the at least one active subband overlaps with one of DL usable PRBs and UL usable PRBs.

72. The method as claimed in claim 71, wherein a. the DL usable PRBs comprise at least one PRB in DL-BWP overlapping with the at least one DL resource for SBFD operation in SBFD time resource, and b. the UL usable PRBs comprise at least one PRB in UL-BWP overlapping with the at least one UL resource for SBFD operation in SBFD time resource.

73. The method as claimed in claim 53, wherein configuring the at least one second configuration is using at least one of a. CSI report configuration, b. CSI resource configuration, and c. SRS resource configuration.

74. The method as claimed in claim 53, wherein configuring the at least one first configuration and the at least one second configuration is using RRC message.

75. The method as claimed in claim 53, comprises receiving, by the at least one second node, at least one capability information.

76. The method as claimed in claim 75, wherein the at least one capability information comprises at least one of a. capability of at least one first node to measure the report quantity in at least one UL resource for SBFD operation, b. capability of at least one first node to extrapolate measured report quantity in at least one first frequency resource to at least one second frequency resource, and c. capability of at least one first node to measure the report quantity simultaneously across plurality of resources for SBFD operation.

77. The method as claimed in claim 58, wherein the at least one information about beam for measurement comprises at least one of a. at least one identity of one of a SRS resource and a CSI-RS resource, b. at least one identity of one of a SRS resource set and a CSI-RS resource set, c. a starting time resource, d. at least one applicable time resource, and e. at least one periodicity.

78. The method as claimed in claim 58, wherein the at least one information about beam for measurement is received as a radio resource control (RRC) message using SRS- spatialRelationlnfo information element (IE).

79. The method as claimed in claim 53, wherein the report quantity comprises at least one of a. at least one value, and b. at least one identity of at least one reference signal used for measurement.

80. The method as claimed in claim 79, wherein the at least one value is at least one of a. a single value of the report quantity measured across one of at least one DL resource for SBFD operation and at least one UL resource for SBFD operation b. largest value measured c. smallest value measured, and d. difference of at least one measured value from one of largest value and smallest value.

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