Determination of reference signal resources in a multi-transmit-receive point uplink system - Patents.com

Abstract

A system, method, apparatus, and computer program product for determining reference signal (RS) resources for path loss calculation in a multi-transmit-receive-point (TRP) uplink (UL) scheme. The method may include detecting, by a user equipment, that a pathloss reference signal is not provided for a multi-transmit-receive-point uplink iteration or transmission scheme. The method may also include determining a first reference signal resource and a second reference signal resource as a result of the detection. The method may further include calculating two pathloss values ​​using the first reference signal resource and the second reference signal resource. Furthermore, the method may include performing separate uplink power control for the iterations or transmissions toward different transmit-receive points according to the two pathloss values.

Description

[Technical field]

[0001] [CROSS REFERENCE TO RELATED APPLICATIONS] This application is related to and claims the benefit of and priority to U.S. Provisional Patent Application No. 63 / 135,943, filed January 11, 2021, the entirety of which is incorporated herein by reference.

[0002] Some example implementations may generally relate to mobile or wireless telecommunications systems, such as Long Term Evolution (LTE) or fifth generation (5G) radio access technologies or New Radio (NR) access technologies, or other communications systems. For example, certain example embodiments may relate to an apparatus, system, and / or method for determining reference signal resources in a multiple transmit receive point uplink scheme. [Background technology]

[0003] Examples of mobile communication systems or wireless communication systems may include Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN), Long Term Evolution (LTE) Evolved UTRAN (E-UTRAN), LTE-Advanced (LTE-A), MulteFire, LTE-A Pro, and / or fifth generation (5G) radio access technology or new radio (NR) access technology. Fifth generation (5G) radio system refers to the next generation (NG) of radio systems and network architectures. 5G is primarily built on new radio (NR), but 5G (or NG) networks can also be built on E-UTRAN radio. NR is estimated to provide bit rates of 10-20 Gbit / s or more and support at least enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-based communications (mMTC). NR is expected to enable extremely wideband, ultra-robust low-latency connectivity and massive networking to support the Internet of Things (IoT). With the spread of IoT and M2M (Machine-to-Machine) communications, there is an increasing need for networks that meet the needs of low power consumption, low data rates, and long battery life. It should be noted that in 5G, a node that can provide radio access functionality to user equipment (i.e., similar to NodeB in UTRAN and eNB in ​​LTE) is called gNB when built with NR radios, and called NG-eNB when built with E-UTRAN radios. Summary of the Invention

[0004] Some example embodiments are directed to a method. The method may include detecting, by a user equipment, that a path loss reference signal is not provided for a multi-transmit reception point uplink repetition or transmission scheme. The method may also include determining a first reference signal resource and a second reference signal resource as a result of the detection. The method may further include calculating two path loss values ​​using the first reference signal resource and the second reference signal resource. Furthermore, the method may include performing separate uplink power control for the repetition or transmission toward the different transmit reception points according to the two path loss values.

[0005] Another exemplary embodiment is directed to an apparatus that may include at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to at least cause the apparatus to detect, by the at least one processor, that a path loss reference signal is not provided for a multi-transmit-receive point uplink iteration or transmission scheme. The apparatus may also cause a first reference signal resource and a second reference signal resource to be determined as a result of the detection. The apparatus may further be adapted to calculate two path loss values ​​using the first reference signal resource and the second reference signal resource. Furthermore, the apparatus may be adapted to perform separate uplink power control for the iterations or transmissions toward different transmit-receive points according to the two path loss values.

[0006] Another example embodiment is directed to an apparatus that may include means for detecting, by a user equipment, that a path loss reference signal is not provided for a multiple transmit receive point uplink repetition or transmission scheme. The apparatus may also include means for determining a first reference signal resource and a second reference signal resource as a result of the detection. The apparatus may further include means for calculating two path loss values ​​using the first reference signal resource and the second reference signal resource. Additionally, the apparatus may include means for performing separate uplink power control for the repetitions or transmissions toward different transmission reception points according to the two path loss values.

[0007] According to another example embodiment, a non-transitory computer-readable medium may be encoded with instructions that, when executed in hardware, may perform a method. The method may include detecting, by a user equipment, that a path loss reference signal is not provided for a multi-transmit-receive-point uplink iteration or transmission scheme. The method may also include determining a first reference signal resource and a second reference signal resource as a result of the detection. The method may further include calculating two path loss values ​​using the first reference signal resource and the second reference signal resource. Furthermore, the method may include performing separate uplink power control for the iterations or transmissions toward different transmit-receive points according to the two path loss values.

[0008] Another example embodiment may be directed to a computer program product for performing a method. The method may include detecting, by a user equipment, that a path loss reference signal is not provided for a multi-transmit reception point uplink repetition or transmission scheme. The method may also include determining a first reference signal resource and a second reference signal resource as a result of the detection. The method may further include calculating two path loss values ​​using the first reference signal resource and the second reference signal resource. Furthermore, the method may include performing separate uplink power control for the repetition or transmission toward different transmit reception points according to the two path loss values.

[0009] Another example embodiment may be directed to an apparatus that may include a circuit configured to detect that a path loss reference signal is not provided for a multi-transmit-receive-point uplink iteration or transmission scheme. The apparatus may also include a circuit configured to determine a first reference signal resource and a second reference signal resource as a result of the detection. The apparatus may further include a circuit configured to calculate two path loss values ​​using the first reference signal resource and the second reference signal resource. Furthermore, the apparatus may include a circuit configured to perform separate uplink power control for the iterations or transmissions toward different transmit-receive points according to the two path loss values. [Brief description of the drawings]

[0010] For a proper understanding of the exemplary embodiments, please refer to the accompanying drawings. [Figure 1] FIG. 1 illustrates a flow diagram of a method for determining two reference signal (RS) resources for calculating two path loss values ​​for a multiple downlink control information (multiple DCI) multiple transmission reception point (multiple TRP) scheme, according to a particular example embodiment. [Diagram 2] FIG. 2 is a flow diagram of a method for determining two RS resources for calculating two path loss values ​​in the case of a single DCI multi-TRP scheme according to an example embodiment. [Diagram 3] FIG. 3 illustrates a flow diagram of a method for determining two RS resources for calculating two path loss values ​​in case of a single TRP-based physical downlink shared channel (PDSCH) reception, according to a particular example embodiment. [Figure 4] FIG. 4 illustrates a flow diagram of a method for determining two RS resources for calculation of two path loss values ​​in a single frequency network-like (SFN-like) physical downlink control channel (PDCCH) repetition scheme with multiple TRPs, according to an example embodiment. [Diagram 5]FIG. 5 illustrates a flow diagram of a method for determining two RS resources for calculation of two path loss values ​​for a non-SFN PDCCH repetition scheme with multiple TRPs according to an example embodiment. [Figure 6] FIG. 6 illustrates a flow diagram of a method according to an example embodiment. [Figure 7] FIG. 7 is a diagram illustrating an apparatus according to an exemplary embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] It will be readily understood that the components of certain exemplary embodiments as generally described and illustrated in the Figures herein may be arranged and designed in a wide variety of different configurations. Following is a detailed description of several exemplary embodiments of systems, methods, apparatuses, and computer program products for determining reference signal (RS) resources for path loss calculations for a multi-transmit-receive-point (TRP) uplink (UL) scheme.

[0012] The features, structures, or characteristics of the exemplary embodiments described throughout this specification may be combined in any suitable manner in one or more exemplary embodiments. For example, the use of the phrases "particular embodiment," "exemplary embodiment," "some embodiments," or other similar phrases throughout this specification refers to the fact that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment. Thus, the appearance of "particular embodiment," "exemplary embodiment," "some embodiments," "other embodiments," or other similar phrases throughout this specification does not necessarily refer to the same set of embodiments, and the described features, structures, or characteristics may be combined in any suitable manner in one or more exemplary embodiments.

[0013] NR describes quasi-co-location (QCL), transmission configuration indicator (TCI) states, and beam indications for the physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH). For example, NR defines a set of QCL rules that are signaled to the user equipment (UE). These QCL rules define what characteristics are the same between two reference signals (RS), and individual channel characteristics may be classified into four groups, including, for example, QCL types A, B, C, and D. In some cases, RSs (except for synchronization signal (SS) / physical broadcast channel (PBCH) blocks and periodic channel state information-RS (CSI-RS)) may require a valid TCI state to be provided. When QCL type D is not applied (i.e., in frequency range 1 (FR1)), the TCI state includes one RS, which can provide large-scale channel characteristics corresponding to QCL type A, type B, or type C), but when QCL type D is applied (i.e., in frequency range 2 (FR2)), the TCI state can include two RSs, where one of the RSs provides large-scale channel characteristics corresponding to QCL type A, type B, type C, and the second RS provides large-scale channel characteristics corresponding to QCL type D. The configurable and displayable TCI state can include parameters for setting a QCL relationship between one or two downlink (DL) RSs and a demodulation reference signal (DMRS) port of a PDSCH, a DMRS port of a PDCCH, or a CSI-RS port(s) of a CSI-RS resource. Furthermore, the QCL relationship may be provided within the TCI state configuration (or may be assumed based on a default relationship), where QCL-Type1 is for the first DL RS and QCL-Type2 is for the second DL RS (if configured). If no direct TCI status is available to the UE, the UE may use a default QCL assumption.

[0014] For example, for PDCCH, the UE may be configured with one or more control resource sets (CORESETs). In this case, the PDCCH may be monitored, for example, from multiple TRPs (multi-beam PDCCH). Furthermore, each CORESET may be configured with K>1 TCI states, where the medium access control element (MAC-CE) signaling indicates which TCI state to use for QCL indication (and beam indication: Type D). In other cases, the UE may assume that the DMRS antenna ports associated with PDCCH reception in the CORESET configured by the PDCCH-configSIB1 of the master information block (MIB), the DMRS antenna ports associated with the corresponding PDSCH reception, and the corresponding SS / PBCH blocks are quasi-co-located with respect to average gain, QCL-Type A, and QCL-Type D characteristics, if applicable. This assumption may be taken if the UE is not provided with TCI states indicating quasi-co-location information of the DMRS antenna ports for PDCCH reception in the CORESET.

[0015] For PDSCH, if the number of configured TCI states is more than 8, MAC-CE signaling may be used to select / activate up to 8 TCI states. Otherwise, the Downlink Control Information (DCI) may point directly to the TCI index. In addition, the DCI may have a 3-bit field to select a specific TCI state, including for example for PDSCH beam indication. If TCI-PresentInDCI is set to “disabled” in CORESET scheduling, the PDSCH is scheduled by DCI format 1_0 and the TX beam of the PDSCH is the same as the PDCCH (default mode). If TCI-PresentinDCI is set to “enabled” and the time offset between the reception of DL DCI and the reception of the corresponding PDSCH is equal to or greater than a threshold Threshold-Sched-Offset, the TX beam of the PDSCH may be indicated by the TCI index of the DCI (dynamic mode). Furthermore, if TCI-PresentinDCI is set to “enabled / disabled” and the time offset between reception of DL DCI and the corresponding PDSCH is less than a threshold Threshold-Sched-Offset, the TX beam of the PDSCH corresponds to the PDCCH TX beam with the lowest CORESET-ID in the latest slot where one or more CORESETs are configured for the UE (fallback mode).

[0016] For single DCI based multi-TRP PDSCH transmission, the maximum number of activated TCI states is eight. In this case, the MAC-CE is extended to map one or two TCI states to one TCI codepoint. Additionally, a 3-bit TCI field in the DCI is provided if the higher layer parameter tci-PresentinDCI is enabled. Each TCI codepoint in the DCI can correspond to one or two TCI states. Each TCI codepoint in the DCI can correspond to one or two TCI states. If two TCI states are activated in a TCI codepoint, the first and second TCI states apply to the first and second indicated CDM groups, respectively, if the indicated DMRS ports are from two CDM groups.

[0017] For CORESET pool index, the higher layer parameter CORESETPoolIndex can be used to identify the TRP. Separate CORESETs may be configured for different TRPs. For example, the maximum number of CORESETs per "PDCCH-config" may be 5, and the maximum number of CORESETs per TRP may be up to the UE capability (e.g., 3, 4, 5). Furthermore, each CORESET may be configured with the higher layer parameter CORESETPoolIndex that identifies the TRP. If the UE is configured with the higher layer parameter PDCCH-Config that contains two different values ​​of CORESETPoolIndex in the ControlResourceSet of the active bandwidth part (BWP) of the serving cell, the UE can receive multiple PDCCHs scheduling full / partial / non-overlapping PDSCHs in time and frequency domains depending on the UE capability. On the other hand, for a CORESET that does not have a CORESETPoolIndex, the UE may assume that it is assigned a CORESET with CORESETPoolIndex 0.

[0018] In the beam indication (i.e., spatial relationship) of PUCCH, the gNB can configure up to eight source RSs for each PUCCH resource by Radio Resource Control (RRC) signaling. A source RS may be a DL SS / PBCH index, a CSI-RS resource index, or a Sounding Reference Signal (SRS) resource index. If multiple source RSs are configured for a resource, MAC-CE signaling can be used to select one of the source RSs to apply. In this case, dynamic beam switching for PUCCH may be supported, since the UE can determine the TX beam for PUCCH based on the activated source RS.

[0019] In the beam indication (i.e., spatial relationship) of PUSCH, PUSCH may be scheduled by DCI format 0_0. In this case, the UE may use the default spatial relationship information (source RS) corresponding to the spatial relationship used by the PUCCH resource with the smallest ID set in the active BWP. Furthermore, before the spatial relationship information (+MAC activation) of PUCCH is set by RRC after the first access, the UE may use the same TX beam for PUSCH as used for Msg3.

[0020] In another case, the PUSCH is scheduled by DCI format 0_1, and the transmission scheme may be codebook-based. Here, the UE may configure one or two SRS resources for codebook-based transmission, with each resource having one or more SRS ports. If one SRS resource is configured, the UE may transmit the PUSCH using a precoder on the SRS port of the resource as provided by a transmit precoding matrix indicator (TPMI) of the DCI. But in the case of two SRS resources, the UE may transmit the PUSCH using a precoder on the SRS port of the selected resource by the SRI provided by the TPMI of the DCI. Furthermore, the SRS resource may function as a source RS for PUSCH transmission in a spatial relationship.

[0021] In some cases, the PUSCH scheduled by DCI format 0_1 ​​and transmission scheme may not be codebook-based. In this case, the UE may be configured with one or more SRS resources, each with one SRS port. Furthermore, the UE may transmit the PUSCH using the same beam as the SRS resource given by the SRI of the DCI (one-to-one mapping between the SRS resource and the DMRS port of the PUSCH). Furthermore, the SRS resource may function as a source RS for the PUSCH transmission in a spatial relationship.

[0022] 3GPP TS38.213 describes a specific PUCCH / PUSCH power control and path loss determination procedure. For example, in one case, the UE may determine the PUSCH transmit power based on the following: If the UE transmits a PUSCH in the active UL BWP of the carrier of the serving cell using a parameter set configuration with index and a PUSCH power control adjustment state with index, The UE transmits the PUSCH transmit power at PUSCH transmit power i.

number

number

[0023] To determine the PUCCH transmit power, a similar equation is used according to the following: (2)

number

[0024] The various parameters used in the above equations are defined and explained in 3GPP TS 38.213. However, in certain exemplary embodiments,

number

[0025] In the path loss determination, the path loss PL may be based on a difference between an indicated referenceSignalPower of the higher layer and a filtered reference signal received power (RSRP) of the higher layer calculated on the indicated reference signal index (qd);

number

[0026] As described in TS38.213, if the UE is not provided with a pathlossReferenceRS based on the existing procedures specified in Rel-15 / Rel-16 NR, the UE shall select the RS source to calculate the pathloss value from:

number

number

[0027] If the UE is not provided with pathlossReferenceRS, PUCCH-SpatialRelationInfo is not provided, enableDefaultBeamPL-ForPUCCH-r16 is provided, and CORESETPoolIndex value 1 is not provided for any CORESET or CORESETPoolIndex value is 1 for all CORESETs, the DCI format of the search space set, if any, is mapped to two TCI states, and the UE may determine the RS resource index q_d. The RS resource index may provide the periodic RS resource of QCL-TypeD in the TCI state or the QCL assumption of the CORESET with the lowest index in the active DL BWP of the primary cell. In case of PUCCH transmissions spanning multiple slots, the same q_d may be applied for the PUCCH transmissions in each of the multiple slots. In some cases, if the UE is not provided with pathlossReferenceRS, the above procedure may allow the determination of a single RS source to be used for the calculation of the pathloss value. This is therefore applicable in the case of a single TRP.

[0028] In 3GPP Release-17, one of the key topics is "Enhanced support for multi-TRP deployment". RP-193133 lists the objectives for multi-TRP operational work, and one of the key objectives is described as identifying and specifying features to improve reliability and robustness of channels other than PDSCH (e.g. PDCCH, PUSCH, PUCCH) using multi-TRP and / or multi-panel. Regarding multi-TRP PUCCH transmission / repetition, the following agreement was reached in the 3GPP RAN1#102-e meeting to support the configuration / activation of multiple PUCCH spatial relationship information to enable TDM PUCCH transmission by different beams. In addition, the conditions may be the method of configuration / activation of multiple spatial relationship information, the use of same PUCCH resource or different PUCCH resource for PUCCH transmission, mapping of PUCCH repetition / symbol and spatial relationship information between multiple PUCCH repetitions / multiple PUCCH symbols. Another agreement in RAN1#103-e is as follows: The necessary power control extensions for multi-TRP PUCCH transmissions are further investigated.

[0029] In the above case and alternatively, since there are two TRPs / links involved in the multi-TRP PUCCH / PUSCH repetition / transmission, a default order may be defined such that the UE knows which of the two determined RS resources to use for the calculation of the pathloss value of the PUCCH / PUSCH power corresponding to a given TRP / link. According to certain exemplary embodiments, for multi-TRP UL (i.e., PUCCH / PUSCH) repetition / transmission, if the UE is provided with a single pathloss reference RS, then for each of the above DL schemes, the various options discussed above may be used, at least in part, to determine the RS resource to use for the calculation of the second pathloss value.

[0030] In a particular exemplary embodiment, when a common TCI is supported towards the UE, if a single common TCI state is used / indicated on the UL, the UE may apply the indicated common TCI state to the first pathloss reference RS to derive the second RS resource. In a particular exemplary embodiment, the derivation of the second RS may be based on a common UL TCI including two QCL assumptions that provide a reference for determining two pathlossReferenceRS. Also, the derivation of the second RS resource may be derived with a fixed relationship depending on the common TCI state indicated on the UL. The fixed relationship may be defined or configured with respect to the common UL TCI state. Furthermore, the derivation of the second RS resource may be derived based on the common DL TCI state. According to a particular exemplary embodiment, for each of the two determined RS resources, a corresponding pathloss value (denoted by , where qd is the RS resource) may be calculated based on the difference between the referenceSignalPower indicated to the higher layer and the higher layer filtered RSRP calculated on the RS resource. This pathloss value may be used in the PUCCH / PUSCH transmit power formula described herein.

[0031] FIG. 1 shows a flow diagram of a method for determining two RS resources for calculating two path loss values ​​in case of a multi-DCI multi-TRP scheme according to a certain exemplary embodiment. In case of multi-TRP UL repetition / transmission, if the UE is not provided with pathlossReferenceRSs, the UE can detect the need to determine two RS resources to use for calculating two path loss values. In 105, the UE can determine a first RS resource and a second RS resource. The first RS resource may be the assumed RS of TCI or QCL of the CORESET with the lowest CORESET index in the CORESET pool with CORESETPoolIndex=0, and the second RS resource may be the assumed RS of TCI or QCL of the CORESET with the lowest index in the CORESET pool with CORESETPoolIndex=1. In 110, the UE can use these two RS resources to calculate two path loss values ​​to be used for individual PUCCH (or PUSCH) power control for different TRPs.

[0032] FIG. 2 illustrates a flow diagram of a method for determining two RS resources for the calculation of two path loss values ​​in the case of a single DCI multi-TRP scheme according to a particular exemplary embodiment. In 200, in the case of a multi-TRP UL repetition / transmission, if the UE is not provided with pathlossReferenceRSs, the UE may detect the need to determine two RS resources to use for the calculation of two path loss values. In 205, the UE may determine a first RS resource and a second RS resource. The first RS resource may be an RS in a first TCI state of the lowest TCI codepoint among the TCI codepoints including the TCI states of the two PDSCHs, and the second RS resource may be an RS in a second TCI state of this same TCI codepoint. In 210, the UE may use these two RS resources to calculate two path loss values ​​to be used for separate PUCCH (or PUSCH) power control for different TRPs.

[0033] FIG. 3 illustrates a flow diagram of a method for determining two RS resources to calculate two path loss values ​​in case of single TRP-based PDSCH reception according to a certain exemplary embodiment. In case of multi-TRP UL repetition / transmission, if the UE is not provided with pathlossReferenceRSs, the UE may detect the need to determine two RS resources to use for calculating two path loss values. In 305, the UE may determine a first RS resource and a second RS resource. The first RS resource may be the RS of the TCI or QCL hypothesis of the CORESET with the lowest index, and the second RS resource may be the RS of the TCI or QCL hypothesis of the CORESET with the second lowest index. In 310, the UE may use these two RS resources to calculate two path loss values ​​to be used for separate PUCCH power control for different TRPs.

[0034] FIG. 4 shows a flow diagram of a method for determining two RS resources for the calculation of two path loss values ​​in case of a single frequency network-like (SFN-like) PDCCH repetition scheme with multiple TRPs according to an example embodiment. In 400, in case of multiple TRP UL repetition / transmission, if the UE is not provided with pathlossReferenceRSs, the UE can detect the need to determine two RS resources to use for the calculation of two path loss values. In 405, the UE can determine a first RS resource and a second RS resource. The first RS resource may be the RS of the first TCI or QCL hypothesis of the CORESET with the smallest index having two TCI states or QCL hypotheses, and the second RS resource may be the RS of the second TCI or QCL hypothesis of this same CORESET. In 410, the UE can use these two RS resources to calculate two path loss values ​​to be used for separate PUCCH (or PUSCH) power control for different TRPs.

[0035] FIG. 5 illustrates a flow diagram of a method for determining two RS resources to calculate two path loss values ​​in the case of a non-SFN PDCCH repetition scheme with multiple TRPs (two search space sets are linked together, each associated with a different CORESET) according to a certain exemplary embodiment. At 500, for multiple TRP UL repetitions / transmissions, if the UE is not provided with pathlossReferenceRSs, the UE can detect the need to determine two RS resources to use for calculating two path loss values. At 505, the UE can determine a first RS resource and a second RS resource. The first RS resource may be the RS of the TCI or QCL hypothesis of the CORESET associated with the lowest SS set index (among the linked SS sets), and the second RS resource may be the RS of the TCI or QCL hypothesis of the CORESET associated with the other linked SS set. At 510, the UE can use these two RS resources to calculate two path loss values ​​to be used for individual PUCCH (or PUSCH) power control for different TRPs.

[0036] 6 illustrates a flow diagram of a method according to a particular exemplary embodiment. In a particular exemplary embodiment, the flow diagram of FIG. 6 may be performed by a network entity or node in a 3GPP system, such as LTE or 5G-NR. For example, in an exemplary embodiment, the method of FIG. 6 may be performed by a UE, such as the device 10 or 20 shown in FIG. 7(a) and 7(b).

[0037] According to certain exemplary embodiments, the method of FIG. 6 may include, at 600, detecting by a user equipment that a pathloss reference signal is not provided for a multi-transmit reception point uplink repetition or transmission scheme. The method may also include, at 605, determining a first reference signal resource and a second reference signal resource as a result of the detection. The method may further include, at 610, calculating two pathloss values ​​using the first reference signal resource and the second reference signal resource. Furthermore, the method may include, at 615, performing separate uplink power control for the repetitions or transmissions toward different transmit reception points according to the two pathloss values.

[0038] According to certain exemplary embodiments, determining the first and second reference signal resources may depend at least in part on a transmission reception point scheme in the downlink and at least one of a transmission configuration indicator state or a quasi-co-location assumption of at least one control resource set or a transmission configuration indicator state or a quasi-co-location assumption of a transmission configuration indicator state of a physical downlink shared channel. According to other exemplary embodiments, the transmission reception point scheme in the downlink may be at least one of a multi-DCI multi-TRP scheme, a single-DCI multi-TRP scheme, a single-TRP-based PDSCH reception scheme, or a PDCCH repetition scheme with multiple TRPs.

[0039] In a particular exemplary embodiment, in the case of a multi-DCI multi-TRP scheme, the first reference signal resource may be a TCI or QCL hypothetical reference signal of a CORESET having the lowest CORESET index in a CORESET pool having a CORESET pool index value of 0, and the second reference signal resource may be a TCI or QCL hypothetical reference signal of a CORESET having the lowest CORESET index in a CORESET pool having a CORESET pool index value of 1.

[0040] According to certain exemplary embodiments, the first reference signal resource and the second reference signal resource may be determined to be, respectively, a reference signal of a transmission configuration indication state of a latest physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool with a control resource set pool index value of 0, and a reference signal of a transmission configuration indication state of a latest physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool with a control resource set pool index value of 1.

[0041] In a particular exemplary embodiment, the first reference signal resource and the second reference signal resource may be determined to be, respectively, a reference signal in an active transmission configuration indication state having the lowest index of a physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool with a control resource set pool pool index value of 0 and a reference signal in an active transmission configuration indication state having the lowest index of a physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool with a control resource set pool pool index value of 1.

[0042] According to some example embodiments, the first reference signal resource and the second reference signal resource may be determined as a reference signal of a transmission configuration state of the latest physical uplink control channel or physical uplink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool having a control resource set index value of 0, and a reference signal of a transmission configuration indication state of the latest physical uplink control channel or physical uplink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool having a control resource set index value of 1, respectively.

[0043] In another exemplary embodiment, in the case of a single DCI multi-TRP scheme, the first reference signal resource may be a reference signal of a first TCI state of the lowest codepoint among the TCI codepoints including the TCI states of the two PDSCHs, and the second reference signal resource may be a reference signal of a second TCI state of the same TCI codepoint as the first reference signal resource.

[0044] According to certain exemplary embodiments, the first reference signal resource and the second reference signal resource may be determined to be, respectively, a transmission configuration indicator or a quasi-co-location assumed reference signal of a control resource set having the lowest index and a transmission configuration indicator or a quasi-co-location assumed reference signal of a control resource set having a second lowest index.

[0045] In some exemplary embodiments, the first reference signal resource and the second reference signal resource may be determined to be, respectively, a reference signal of a first transmission configuration indication state provided by a transmission configuration indication code point of a latest physical downlink shared channel scheduled with two transmission configuration indication states, and a reference signal of a second transmission configuration indication state included in this same transmission configuration indication code point.

[0046] In a further exemplary embodiment for a single TRP based PDSCH scheme, for example in an active DL BWP of a primary cell, the first reference signal resource may be a reference signal of the TCI or QCL assumption of the CORESET with the lowest index, and the second reference signal resource may be a reference signal of the TCI or QCL assumption of the CORESET with the second lowest index.

[0047] According to certain exemplary embodiments, in the case of a PDCCH repetition scheme with multiple TRPs and in a SFN context, the first reference signal resource may be a reference signal of a first TCI or QCL hypothesis of a CORESET having the lowest index having two TCI states or QCL hypotheses, and the second reference signal resource may be a reference signal of a second TCI or QCI hypothesis of the same CORESET as the first reference signal resource.

[0048] According to another exemplary embodiment, in the case of a PDCCH repetition scheme with multiple TRPs, in a non-SFN context in which two search space sets are linked together and each is associated with a different CORESET, the first reference signal resource may be a reference signal of the TCI or QCL hypothesis of the CORESET associated with the SS set with the lowest index among the linked SS sets, and the second reference signal resource may be a reference signal of the TCI or QCL hypothesis of the CORESET associated with the other linked SS set.

[0049] FIG. 7(a) illustrates an apparatus 10 according to a particular exemplary embodiment. In certain exemplary embodiments, the apparatus 10 may be a node or element in a communication network, such as a UE, a mobile equipment (ME), a mobile station, a mobile device, a fixed device, an IoT device, or other device, or a node or element associated with such a network. In other exemplary embodiments, the apparatus 10 may be a network element, node, host, server in or serving such a communication network. It is noted that one skilled in the art will understand that the apparatus 10 may include components or features not shown in FIG. 7(a). In some exemplary embodiments, the apparatus 10 may include one or more processors, one or more computer-readable storage media (e.g., memory, storage, etc.), one or more wireless access components (e.g., modems, transceivers, etc.), and / or a user interface. In some exemplary embodiments, the apparatus 10 may be configured to operate using one or more wireless access technologies, such as GSM, LTE, LTE-A, NR, 5G, WLAN, WiFi, NB-IoT, Bluetooth, NFC, MulteFire, and / or any other wireless access technology. It should be noted that one skilled in the art would understand that device 10 may include components or functionality not shown in FIG. 7(a).

[0050] As shown in the example of FIG. 7(a), the device 10 may include or be coupled to a processor 12 for processing information and executing instructions or operations. The processor 12 may be any type of general-purpose or special-purpose processor. Indeed, the processor 12 may include, by way of example, one or more of a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), and a processor based on a multi-core processor architecture. Although a single processor 12 is shown in FIG. 7(a), multiple processors may be utilized according to other exemplary embodiments. For example, it should be understood that in certain exemplary embodiments, the device 10 may include two or more processors that may form a multiprocessor system that may support multiprocessing (e.g., in this case, the processor 12 may represent a multiprocessor). According to certain exemplary embodiments, the multiprocessor system may be tightly coupled or loosely coupled (e.g., forming a computer cluster).

[0051] Processor 12 may perform functions associated with the operation of device 10, including, as some examples, precoding antenna gain / phase parameters, encoding and decoding individual bits that form communication messages, formatting information, and overall control of device 10, including the processes shown in Figures 1-6.

[0052] The device 10 may further include or be coupled to a memory 14 (internal or external) that may be coupled to the processor 12 for storing information and instructions that may be executed by the processor 12. The memory 14 may be one or more memories and may be of any type suitable for a local application environment, The memory 14 may be implemented using any suitable volatile or non-volatile data storage technology, such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and / or removable memory. For example, the memory 14 may be comprised of any combination of random access memory (RAM), read-only memory (ROM), static storage devices such as magnetic or optical disks, hard disk drives (HDD), or any other type of non-transitory machine- or computer-readable medium. The instructions stored in the memory 14 may include program instructions or computer program code that, when executed by the processor 12, enable the device 10 to perform the tasks described herein.

[0053] In certain exemplary embodiments, device 10 may further include or be coupled (internal or external) to a drive or port configured to accept and read an external computer-readable storage medium, such as an optical disk, a USB drive, a flash drive, or any other storage medium. For example, the external computer-readable storage medium may store computer programs or software for execution by processor 12 and / or device 10 to perform any of the methods illustrated in Figures 1-6.

[0054] In some demonstrative embodiments, the device 10 may also include or be coupled to one or more antennas 15 for receiving downlink signals and transmitting from the device 10 via an uplink. The device 10 may further include a transceiver 18 configured to transmit and receive information. The transceiver 18 may also include a wireless interface (e.g., a modem) coupled to the antenna 15. The wireless interface may correspond to multiple wireless access technologies including one or more of GSM, LTE, LTE-A, 5G, NR, WLAN, NB-IoT, Bluetooth, BT-LE, NFC, RFID, UWB, etc. The wireless interface may include other components such as filters, converters (e.g., digital-to-analog converters, etc.), symbol demappers, signal shaping components, inverse fast Fourier transform (IFFT) modules, and the like for processing symbols, such as OFDMA symbols, carried by the downlink or uplink.

[0055] For example, transceiver 18 may be configured to modulate information onto a carrier waveform for transmission by antenna 15, and to demodulate information received via antenna 15 for further processing by other elements of device 10. In other exemplary embodiments, transceiver 18 may transmit and receive signals or data directly. Additionally or alternatively, in some exemplary embodiments, device 10 may include input and / or output devices (I / O devices). In an exemplary embodiment, the device 10 may further include a user interface, such as a graphical user interface or a touch screen.

[0056] In certain exemplary embodiments, memory 14 stores software modules that provide functionality when executed by processor 12. The modules may include, for example, an operating system that provides operating system functionality to device 10. The memory may also store one or more functional modules, such as applications or programs, for providing additional functionality to device 10. The components of device 10 may be implemented in hardware or as any suitable combination of hardware and software. According to certain exemplary embodiments, device 10 may be configured to communicate with device 20 via wireless communication link 70 or wired communication link 70, optionally according to any wireless access technology, such as NR.

[0057] According to certain exemplary embodiments, the processor 12 and memory 14 may be included in or form part of processing or control circuitry. Further, in some exemplary embodiments, the transceiver 18 may be included in or form part of transmitting and receiving circuitry.

[0058] As mentioned above, according to an exemplary embodiment, the apparatus 10 may be, for example, a UE. According to an exemplary embodiment, the apparatus 10 may be controlled by the memory 14 and the processor 12 to perform functions related to the exemplary embodiments described herein. For example, in an exemplary embodiment, the apparatus 10 may be controlled by the memory 14 and the processor 12 to detect that a path loss reference signal is not provided for a multi-transmit reception point uplink repetition or transmission scheme. The apparatus 10 may also be controlled by the memory 14 and the processor 12 to determine a first reference signal resource and a second reference signal resource as a result of the detection. The apparatus 10 may further be controlled by the memory 14 and the processor 12 to calculate two path loss values ​​using the first reference signal resource and the second reference signal resource. Furthermore, the apparatus 10 may be controlled by the memory 14 and the processor 12 to perform separate uplink power control for the repetition or transmission toward different transmit reception points according to the two path loss values.

[0059] 7(b) illustrates the device 20 according to a particular exemplary embodiment. In a particular exemplary embodiment, the device 20 may be a node or element in a communications network, such as an LTE network, 5G or NR, or a node or element associated with such a network, such as a base station, a Node B, an evolved Node B (eNB), a 5G Node B or access point, a next generation Node B (NG-NB or gNB), and / or a WLAN access point. It is noted that one skilled in the art would understand that the device 20 may include components or features not illustrated in FIG. 7(b).

[0060] As shown in the example of FIG. 7(b), the device 20 may include a processor 22 for processing information and executing instructions or operations. The processor 22 may be any type of general-purpose or special-purpose processor. For example, the processor 22 may include one or more of a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), and a processor based on a multi-core processor architecture, as examples. Although a single processor 22 is shown in FIG. 7(b), multiple processors may be utilized according to other exemplary embodiments. For example, it should be understood that in certain exemplary embodiments, the device 20 may include two or more processors (e.g., in this case, the processor 22 represents a multiprocessor) that may form a multiprocessor system that may support multiprocessing. In certain exemplary embodiments, the multiprocessor system may be tightly coupled or loosely coupled (e.g., to form a computer cluster).

[0061] According to certain exemplary embodiments, processor 22 may perform functions related to the operation of device 20, including, for example, precoding antenna gain / phase parameters, encoding and decoding individual bits forming communication messages, formatting information, and overall control of device 20.

[0062] The device 20 may further include or be coupled to the processor 22 (internal or external) memory 24 for storing information and instructions that may be executed by the processor 22. The memory 24 may be one or more memories and may be of any type suitable for the local application environment and may be implemented using any suitable volatile or non-volatile data storage technology, such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and / or removable memory. For example, the memory 24 may be comprised of any combination of random access memory (RAM), read-only memory (ROM), static storage devices such as magnetic or optical disks, hard disk drives (HDD), or any other type of non-transitory machine- or computer-readable medium. The instructions stored in the memory 24 may include program instructions or computer program code that, when executed by the processor 22, enable the device 20 to perform tasks as described herein.

[0063] In certain exemplary embodiments, device 20 may further include or be coupled (internal or external) to a drive or port configured to accept and read an external computer-readable storage medium, such as an optical disk, a USB drive, a flash drive, or any other storage medium. For example, the external computer-readable storage medium may store computer programs or software for execution by processor 22 and / or device 20 to perform the methods described herein.

[0064] In certain exemplary embodiments, device 20 may include or be coupled to one or more antennas 25 for transmitting and receiving signals and / or data to and from device 20. Device 20 may further include or be coupled to a transceiver 28 configured to transmit and receive information. Transceiver 28 may include multiple wireless interfaces, which may be coupled to antenna(s) 25, for example. The wireless interface may correspond to multiple wireless access technologies, including one or more of GSM, NB-IoT, LTE, 5G, WLAN, Bluetooth, BT-LE, NFC, radio frequency identifier (RFID), ultra-wideband (UWB), MulteFire, and the like. The wireless interface may include components, such as filters, converters (e.g., digital-to-analog converters, etc.), mappers, fast Fourier transform (FFT) modules, and the like, to generate symbols for transmission over one or more downlinks and receive symbols (e.g., over an uplink).

[0065] Thus, transceiver 28 may be configured to modulate information onto a carrier waveform for transmission by antenna 25, and to demodulate information received via antenna 25 for further processing by other elements of device 20. In other exemplary embodiments, transceiver 18 may transmit and receive signals or data directly. Additionally or alternatively, in some exemplary embodiments, device 20 may include input and / or output devices (I / O devices).

[0066] In certain exemplary embodiments, memory 24 may store software modules that provide functionality when executed by processor 22. The modules may include, for example, an operating system that provides operating system functionality for device 20. The memory may also store one or more functional modules, such as applications or programs, to provide additional functionality for device 20. Components of device 20 may be implemented in hardware or as any suitable combination of hardware and software.

[0067] According to some exemplary embodiments, the processor 22 and memory 24 may be included in or form part of processing or control circuitry. Furthermore, in some exemplary embodiments, the transceiver 28 may be included in or form part of a transceiver circuit.

[0068] As used herein, the term "circuitry" may refer to hardware-only circuit implementations (e.g., analog and / or digital circuits), combinations of hardware circuits and software, combinations of analog and / or digital hardware circuits and software / firmware, any portion of a hardware processor having software (including digital signal processors) that cooperate to cause a device (e.g., devices 10 and 20) to perform various functions, and / or hardware circuits and / or processors, or portions thereof, that use software for operation but may be absent if not necessary for operation. As a further example, as used herein, the term "circuitry" may also cover merely a hardware circuit or processor (or processors), or a portion of a hardware circuit or processor, and its associated software and / or firmware implementations. The term circuitry may also cover, for example, baseband integrated circuits in a server, a cellular network node or device, or other computing or network device.

[0069] As introduced above, in certain embodiments, device 20 is a network element, node, host, or server in a communications network or provides services to such a network. For example, device 20 may be a satellite, a base station, a Node B, an evolved Node B (eNB), a 5G Node B or access point, a next generation Node B (NG-NB or gNB), and / or a WLAN access point associated with a Radio Access Network (RAN), such as an LTE network, 5G, or NR. According to certain embodiments, device 20 may be controlled by memory 24 and processor 22 to perform functions associated with any of the embodiments described herein.

[0070] Further exemplary embodiments may provide means for performing any of the functions, steps, or procedures described herein. For example, one exemplary embodiment may be directed to an apparatus including means for detecting, by a user equipment, that a path loss reference signal is not provided for a multi-transmit reception point uplink repetition or transmission scheme. The apparatus may also include means for determining a first reference signal resource and a second reference signal resource as a result of the detection. The apparatus may further include means for calculating two path loss values ​​using the first reference signal resource and the second reference signal resource. Additionally, the apparatus may include means for performing separate uplink power control for the repetitions or transmissions toward different transmit reception points according to the two path loss values.

[0071] Certain exemplary embodiments described herein provide several technical improvements, enhancements, and / or advantages. In some exemplary embodiments, it may be possible to determine two RS resources that the UE uses to calculate two pathloss values ​​from a multi-TRP PUCCH / PUSCH scheme when the UE is not provided / configured with a pathlossReferenceRS or when only a single pathlossReferenceRS is provided. This is important to accommodate the presence of two different TRPs / links that may have a large difference in their respective pathloss. According to certain exemplary embodiments, it is also possible to determine the RS resources depending on the DL TRP scheme, which may include, for example, a multi-DCI multi-TRP scheme, a single DCI multi-TRP scheme, or a PDCCH repetition with a multi-TRP scheme.

[0072] The computer program product may include one or more computer executable components configured to execute some exemplary embodiments when the program is executed. The one or more computer executable components may be at least one software code or a portion thereof. The modifications and configurations required to execute the functionality of a particular exemplary embodiment may be implemented as a routine(s) or as additional or updated software routine(s). The software routines may be downloaded to the device.

[0073] By way of example, the software or computer program code or portions thereof may be in source code form, object code form or any intermediate form and may be stored on any carrier, distribution medium or computer readable medium. Such carriers may include, for example, recording media, computer memory, read-only memory, optical-electrical and / or electrical carrier signals, telecommunication signals, software distribution packages. Depending on the processing power required, the computer program may be executed on a single electronic digital computer or distributed across several computers. The computer readable medium or computer readable storage medium may be a non-transitory medium.

[0074] In other exemplary embodiments, the functionality may be performed by hardware or circuitry included in a device (e.g., device 10 or device 20), for example, through the use of an application specific integrated circuit (ASIC), a programmable gate array (PGA), a field programmable gate array (FPGA), or any other combination of hardware and software. In yet another exemplary embodiment, the functionality may be implemented as signals that are non-tangible means that may be conveyed by electromagnetic signals downloaded from the Internet or other network.

[0075] According to certain exemplary embodiments, an apparatus such as a node, device, or corresponding component may be configured as a microprocessor, such as a circuit, computer, or single-chip computer element, or as a chipset, including at least a memory for providing storage capacity used for computational operations, and a computational processor for performing the computational operations.

[0076] Those skilled in the art will readily appreciate that the invention described above can be implemented with steps in different orders and / or with hardware elements in different configurations than those disclosed. Thus, while the invention has been described based on these exemplary embodiments, it will be apparent to those skilled in the art that certain modifications, variations, and alternative configurations will be apparent while remaining within the spirit and scope of the exemplary embodiments. Although the above embodiments refer to 5G NR and LTE technologies, the above embodiments may also be applied to any other current or future 3GPP technologies, such as LTE-advanced and / or fourth generation (4G) technologies.

[0077] Partial Glossary 3GPP: 3rd Generation Partnership Project 5GC: 5G Core CORESET: Control resource set DCI: Downlink control information DL: Dynamic Generic QoS / SLA DL Downlink eNB: Enhanced Node B gNB: 5G or next generation NodeB MAC CE: Medium Access Control Element NR:New Radio PDCCH: Physical Downlink Control Channel PDSCH: Physical Downlink Shared Channel PL: Path loss PRI: PUCCH Resource Index PUCCH: Physical uplink control channel PUSCH: Physical uplink shared channel RAN: Radio Access Network RS:Reference Signal TCI:Transmission Configuration Indicator TDM: Time division multiplexing TRP: Transmit Receiving Point UCI: Uplink Control Information UE: User Equipment UL: Uplink

Claims

1. An apparatus comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to cause the device to at least: Detecting that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; Calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; 13. An apparatus configured to perform separate uplink power control for repetitions or transmissions towards different transmission reception points according to the two path loss values, the apparatus comprising: Determining the first reference signal resource and the second reference signal resource includes: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set; Physical downlink shared channel transmit configuration indicator state Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A physical downlink shared channel receiving method based on a single transmitting receiving point, PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of the multiple downlink control information multiple transmission reception point method, The first reference signal resource and the second reference signal resource each include: a reference signal indicating a transmission configuration state of the latest physical downlink shared channel scheduled by the physical downlink control channel on a control resource set in the control resource set pool with a control resource set index value of 0; and a reference signal indicating a transmission configuration state of a latest physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in the control resource set pool having a control resource set pool index value of 1; It is determined that Device.

2. An apparatus comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to cause the device to at least: Detecting that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; Calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; 13. An apparatus configured to perform separate uplink power control for repetitions or transmissions towards different transmission reception points according to the two path loss values, the apparatus comprising: Determining the first reference signal resource and the second reference signal resource includes: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set; Physical downlink shared channel transmit configuration indicator state Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A physical downlink shared channel receiving method based on a single transmitting receiving point, PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of the multiple downlink control information multiple transmission reception point method, The first reference signal resource and the second reference signal resource each include: a reference signal indicating an active transmission configuration having the lowest index of a scheduled physical downlink shared channel by a physical downlink control channel on a control resource set of a control resource set pool with a control resource set index value of 0; and a reference signal indicating the active transmission configuration state of a lowest index of a physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in the control resource set pool having a control resource set pool index value of 1; It is determined that Device.

3. An apparatus comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to cause the device to at least: Detecting that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; Calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; 11. An apparatus configured to perform separate uplink power control for repetitions or transmissions towards different transmission reception points according to the two path loss values, the apparatus comprising: Determining the first reference signal resource and the second reference signal resource includes: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set; Physical downlink shared channel transmit configuration indicator state Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A physical downlink shared channel receiving method based on a single transmitting receiving point, PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of the multiple downlink control information multiple transmission reception point method, The first reference signal resource and the second reference signal resource each include: a reference signal for the latest physical uplink control channel or physical uplink shared channel transmission configuration state by a physical downlink control channel on a control resource set in a control resource set pool with a control resource set index value of 0; It is determined that the reference signal of the transmission configuration indication state of the latest physical uplink control channel or physical uplink shared channel scheduled by the physical downlink control channel on the control resource set in the control resource set pool with a control resource set index value of 1; Device.

4. An apparatus comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to cause the device to at least: Detecting that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; Calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; 13. An apparatus configured to perform separate uplink power control for repetitions or transmissions towards different transmission reception points according to the two path loss values, the apparatus comprising: Determining the first reference signal resource and the second reference signal resource includes: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set; Physical downlink shared channel transmit configuration indicator state Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A physical downlink shared channel receiving method based on a single transmitting receiving point, PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of a single downlink control information multiplexing receiving point system, The first reference signal resource and the second reference signal resource each include: the transmission configuration indicator or quasi-co-location reference signal of the control resource set having the lowest index; and It is determined that the transmission configuration indicator of the control resource set having the second lowest index or the reference signal of the quasi-co-location assumption; Device.

5. An apparatus comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to cause the device to at least: Detecting that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; Calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; 13. An apparatus configured to perform separate uplink power control for repetitions or transmissions towards different transmission reception points according to the two path loss values, the apparatus comprising: Determining the first reference signal resource and the second reference signal resource includes: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set; Physical downlink shared channel transmit configuration indicator state Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A physical downlink shared channel receiving method based on a single transmitting receiving point, PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of a single downlink control information multiplexing receiving point system, The first reference signal resource and the second reference signal resource each include: a reference signal of a first transmission configuration indication state provided by a transmission configuration indication codepoint of a latest physical downlink shared channel scheduled with two transmission configuration indication states; and a reference signal for a second transmission configuration indication state contained in the same transmission configuration indication code point; Device.

6. An apparatus comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to cause the device to at least: Detecting that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; Calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; 11. An apparatus configured to perform separate uplink power control for repetitions or transmissions towards different transmission reception points according to the two path loss values, the apparatus comprising: Determining the first reference signal resource and the second reference signal resource includes: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set; Physical downlink shared channel transmit configuration indicator state Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A physical downlink shared channel receiving method based on a single transmitting receiving point, PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of a physical downlink shared channel reception scheme based on a single transmitting reception point, The first reference signal resource is a transmission configuration indicator of the control resource set having a lowest index or a quasi-co-located reference signal; The second reference signal resource is the transmission configuration indicator or quasi-co-located reference signal of the control resource set having the second lowest index. Device.

7. An apparatus comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to cause the device to at least: Detecting that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; Calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; 11. An apparatus configured to perform separate uplink power control for repetitions or transmissions towards different transmission reception points according to the two path loss values, the apparatus comprising: Determining the first reference signal resource and the second reference signal resource includes: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set; Physical downlink shared channel transmit configuration indicator state Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A physical downlink shared channel receiving method based on a single transmitting receiving point, PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of a physical downlink control channel repetition scheme having multiple transmission reception points, In a single frequency network context, The first reference signal resource is a reference signal of a first transmission configuration indication state or quasi-co-location assumption of a lowest index control resource set having two transmission configuration indication states or quasi-co-location assumptions; The second reference signal resource is a reference signal in a second transmission configuration indication state or quasi-co-location assumption of the same control resource set as the first reference signal resource. Device.

8. An apparatus comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to cause the device to at least: Detecting that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; Calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; 11. An apparatus configured to perform separate uplink power control for repetitions or transmissions towards different transmission reception points according to the two path loss values, the apparatus comprising: Determining the first reference signal resource and the second reference signal resource includes: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set; Physical downlink shared channel transmit configuration indicator state Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A physical downlink shared channel receiving method based on a single transmitting receiving point, PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of a physical downlink control channel repetition scheme having multiple transmission reception points, In a non-single frequency network context, two search space sets are linked together, each associated with a different control resource set; The first reference signal resource is a transmission configuration indicator or a quasi-co-located reference signal of the control resource set associated with the search space set having the smallest index among the linked search space sets; The second reference signal resource is the transmission configuration indicator of the control resource set associated with another linked search space set or a quasi-co-located reference signal. Device.

9. In the case of the multiple downlink control information multiple transmission reception point method, The first reference signal resource is a transmission configuration indicator of a control resource set having a lowest control resource set index in a control resource set pool having a control resource set pool index value of 0 or a reference signal of a quasi-co-location assumption; The second reference signal resource is the transmission configuration indicator of the control resource set having the lowest control resource set index in the control resource set pool having a control resource set pool index value of 1 or the quasi-co-location reference signal.

9. Apparatus according to any one of claims 1 to 8.

10. In the case of a single downlink control information multiplexing receiving point system, The first reference signal resource is a reference signal of a first transmission configuration indication state of a lowest code point among transmission configuration indication code points including two physical downlink shared control channel transmission configuration indication states, the second reference signal resource is a reference signal of a second transmission configuration indication state of the same transmission configuration indication code point as the first reference signal resource; 9. Apparatus according to any one of claims 1 to 8.

11. Detecting by the user equipment that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; performing separate uplink power control for the repetitions or transmissions towards different transmission-reception points according to the two path loss values; A method comprising: Determining the first reference signal resource and the second reference signal resource comprises: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set or transmission configuration indicator state of a physical downlink shared channel; Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A single transmitting and receiving point based on a physical downlink shared channel receiving method; PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of the multiple downlink control information multiple transmission reception point method, The first reference signal resource and the second reference signal resource each include: a reference signal for a transmission configuration indication state of a latest physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool with a control resource set pool index value of 0; a reference signal of a transmission configuration indication state of a latest physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool with a control resource set pool index value of 1; It is determined that method.

12. Detecting by the user equipment that a path loss reference signal is not provided for a multi-transmit-receive point uplink repeat or transmission scheme; determining a first reference signal resource and a second reference signal resource as a result of the detection; calculating two path loss values ​​using the first reference signal resource and the second reference signal resource; performing separate uplink power control for the repetitions or transmissions towards different transmission-reception points according to the two path loss values; A method comprising: Determining the first reference signal resource and the second reference signal resource comprises: At least in part, a transmit-receive point scheme in the downlink; a transmission configuration indicator state or quasi-co-location assumption for at least one control resource set or transmission configuration indicator state of a physical downlink shared channel; Depends on at least one of The downlink transmission reception point method includes: Multi-downlink control information multi-transmission reception point method; Single downlink control information multiple transmission and reception point method; A single transmitting and receiving point based on a physical downlink shared channel receiving method; PHYSICAL DOWNLINK CONTROL CHANNEL REPEATING SCHEME WITH MULTIPLE TRANSMITTING / RECEIVING POINTS - Patent application At least one of In the case of the multiple downlink control information multiple transmission reception point method, The first reference signal resource and the second reference signal resource each include: a reference signal for indicating an active transmission configuration state having the lowest index of a scheduled physical downlink shared channel by a physical downlink control channel on a control resource set of a control resource set pool with a control resource set pool index value of 0; determining that the control resource set pool index value is a reference signal of the active transmission configuration indication state of the lowest index of a physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool of one; method.

13. In the case of the multiple downlink control information multiple transmission reception point method, The first reference signal resource is a transmission configuration indicator of a control resource set having a smallest control resource set index in a control resource set pool having a control resource set pool index value of 0 or a reference signal of a quasi-co-location assumption; The second reference signal resource is the transmission configuration indicator or the quasi-co-located reference signal in the control resource set pool having a control resource set pool index value of 1. The method according to claim 11 or claim 12.

14. In the case of the multiple downlink control information multiple transmission reception point method, The first reference signal resource and the second reference signal resource each include: a reference signal for indicating an active transmission configuration state having the lowest index of a scheduled physical downlink shared channel by a physical downlink control channel on a control resource set of a control resource set pool with a control resource set pool index value of 0; determining that the control resource set pool index value is a reference signal of the active transmission configuration indication state of the lowest index of a physical downlink shared channel scheduled by a physical downlink control channel on a control resource set in a control resource set pool of one; The method according to claim 11 or claim 12.

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