WO2024228081A1

WO2024228081A1 - Group-based reporting enhancement supporting simultaneous uplink transmission

Info

Publication number: WO2024228081A1
Application number: PCT/IB2024/053920
Authority: WO
Inventors: Juha Karjalainen; Sami Hakola; Timo Koskela; Hiromasa Umeda
Original assignee: Nokia Technologies Oy
Current assignee: Nokia Technologies Oy
Priority date: 2023-05-03
Filing date: 2024-04-22
Publication date: 2024-11-07
Anticipated expiration: 2025-11-03
Also published as: CN121039996A

Abstract

Systems, methods, apparatuses, and computer program products for group-based reporting enhancement supporting simultaneous uplink (UL) transmission. A method may include transmitting, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission. Another method may include receiving, from a user equipment, a report indicating whether a pair/group of channel state information rreessoouurrcceess is feasible for simultaneous uplink transmission; determining which pair of channel state information resources is applicable for simultaneous uplink transmission; and receiving simultaneous uplink transmission with the determined resource.

Description

TITLE:

GROUP-BASED REPORTING ENHANCEMENT SUPPORTING SIMULTANEOUS UPLINK TRANSMISSION

FIELD:

[0001] Some example embodiments may generally relate to mobile or wireless telecommunication systems, such as Long Term Evolution (LTE) or fifth generation (5G) new radio (NR) access technology, or 5G beyond, or other communications systems. For example, certain example embodiments may relate to apparatuses, systems, and/or methods for group-based reporting enhancement supporting simultaneous uplink (UL) transmission.

BACKGROUND:

[0002] Examples of mobile or wireless telecommunication systems may include the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN), LTE Evolved UTRAN (E-UTRAN), LTE- Advanced (LTE-A), MulteFire, LTE-A Pro, fifth generation (5G) radio access technology or NR access technology, and/or 5G- Advanced. 5G wireless systems refer to the next generation (NG) of radio systems and network architecture. 5G network technology is mostly based on NR technology, but the 5G (or NG) network can also build on E-UTRAN radio. It is estimated that NR may provide bitrates on the order of 10-20 Gbit/s or higher, and may support at least enhanced mobile broadband (eMBB) and ultra-reliable low-latency communication (URLLC) as well as massive machine-type communication (mMTC). NR is expected to deliver extreme broadband and ultra-robust, low-latency connectivity and massive networking to support the loT.

SUMMARY:

[0003] Some example embodiments may be directed to a method. The method may include transmitting, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

[0004] Other example embodiments may be directed to an apparatus. The apparatus may include at least one processor and at least one memory storing instructions. The instructions, when executed by the at least one processor, cause the apparatus at least to transmit, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

[0005] Other example embodiments may be directed to an apparatus. The apparatus may include means for transmitting, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

[0006] In accordance with other example embodiments, a computer readable medium may be encoded with instructions that may, when executed in hardware, perform a method. The method may include transmitting, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

[0007] Other example embodiments may be directed to a computer program product that performs a method. The method may include transmitting, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

[0008] Other example embodiments may be directed to an apparatus that may include circuitry configured to transmit, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

[0009] Some example embodiments may be directed to a method. The method may include receiving, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission. The method may also include determining which pair of channel state information resources is applicable for simultaneous uplink transmission. The method may further include receiving simultaneous uplink transmission with the determined resource.

[0010] Other example embodiments may be directed to an apparatus. The apparatus may include at least one processor and at least one memory storing instructions. The instructions, when executed by the at least one processor, cause the apparatus at least to receive, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission. The apparatus may also be caused to determine which pair of channel state information resources is applicable for simultaneous uplink transmission. The apparatus may further be caused to receive simultaneous uplink transmission with the determined resource.

[0011] Other example embodiments may be directed to an apparatus. The apparatus may include means for receiving, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission. The apparatus may also include means for determining which pair of channel state information resources is applicable for simultaneous uplink transmission. The apparatus may further include means for receiving simultaneous uplink transmission with the determined resource.

[0012] In accordance with other example embodiments, a computer readable medium may be encoded with instructions that may, when executed in hardware, perform a method. The method may include receiving, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission. The method may also include determining which pair of channel state information resources is applicable for simultaneous uplink transmission. The method may further include receiving simultaneous uplink transmission with the determined resource.

[0013] Other example embodiments may be directed to a computer program product that performs a method. The method may include receiving, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission. The method may also include determining which pair of channel state information resources is applicable for simultaneous uplink transmission. The method may further include receiving simultaneous uplink transmission with the determined resource.

[0014] Other example embodiments may be directed to an apparatus that may include circuitry configured to receive, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission. The apparatus may also include circuitry configured to determine which pair of channel state information resources is applicable for simultaneous uplink transmission. The apparatus may further include circuitry configured to receive simultaneous uplink transmission with the determined resource. BRIEF DESCRIPTION OF THE DRAWINGS:

[0015] For proper understanding of example embodiments, reference should be made to the accompanying drawings, wherein:

[0016] FIG. 1 illustrates an exemplary table of a mapping order of channel state information (CSI) fields of a report.

[0017] FIG. 2 illustrates another exemplary table of a mapping order of CSI fields of a report, according to certain example embodiments.

[0018] FIG. 3 illustrates a further exemplary table of a mapping order of CSI fields of a report, according to certain example embodiments.

[0019] FIG. 4 illustrates an example flow diagram of a method, according to certain example embodiments.

[0020] FIG. 5 illustrates an example flow diagram of another method, according to certain example embodiments.

[0021] FIG. 6 illustrates a set of apparatuses, according to certain example embodiments.

DETAILED DESCRIPTION:

[0022] It will be readily understood that the components of certain example embodiments, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. The following is a detailed description of some example embodiments of systems, methods, apparatuses, and computer program products for group-based reporting enhancement supporting simultaneous uplink (UL) transmission.

[0023] The features, structures, or characteristics of example embodiments described throughout this specification may be combined in any suitable manner in one or more example embodiments. For example, the usage of the phrases “certain embodiments,” “an example embodiment,” “some embodiments,” or other similar language, 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, appearances of the phrases “in certain embodiments,” “an example embodiment,” “in some embodiments,” “in other embodiments,” or other similar language, throughout this specification do not necessarily refer to the same group of embodiments, and the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. Further, the terms “base station”, “cell”, “node”, “gNB”, “network” or other similar language throughout this specification may be used interchangeably.

[0024] As used herein, “at least one of the following: <a list of two or more elements>” and “at least one of <a list of two or more elements>” and similar wording, where the list of two or more elements are joined by “and” or “or,” mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements.

[0025] The technical specifications of the Third Generation Partnership Project (3GPP) New Radio (NR) specify support for simultaneous two-panel uplink (UL) transmissions. 3GPP Rel-17 defines group-based reporting to determine feasible downlink (DL) beam pairs/groups (i.e., DL NZP-CSI-RS/SSB resources associated with DL TX beams, where pair/group consist of two or more DL NZP- CSI-RS/SSB resources or mixture of NZP-CSI-RS and SSB resources) that the user equipment (UE) may receive simultaneously. For instance, in a channel state information (CSI) report, the UE may report L (e.g., L>=1) pairs/groups and P (e.g., P>1) beams per pair/group. In the report, different beams within a pair/group may be received simultaneously. The beams in the same pair/group may be pairable, and the beams may be viewed as a clear extension of Rel-15/16 group-based beam reporting. The number of beams in a pair/group (P) may be 2 beams per pair/group, and the number of beam pairs/groups to report may be designed as (L).

[0026] The maximum number of beam groups (Lmax) in a single CSI report may represent UE capability, and have a value of { 1, 2, 3, 4}. The number of beam groups (L) to be reported in a single CSI report may be configured via radio resource configuration (RRC) rather than configuring the maximum and having the UE dynamically select the value. Additionally, the channel measurement resource (CMR) may be associated with transmission reception points (TRPs) where the CMRs of different TRPs may be configured in two different CMR sets rather than subsets. Further, the UL control information (UCI) format may include reporting of two CSI reference signal resource indicators (CRIs) from two CMR sets. In the UCI format, one bit may indicate the CMR set for the strongest beam, and the reference signal received power (RSRP) may be indicated for the strongest beam and delta RSRP for the other beams.

[0027] FIG. 1 illustrates an exemplary table of a mapping order of channel CSI fields of one report for group-based CRI/RSRP or synchronization signal (SS)/physical broadcast channel (PBCH) block resource indicator (SSBRI) or mixture of CRI and SSBRI (i.e., in pair one resource is CRI and another resource is SSBRI) reporting. Group-based beam reporting may be extended with an additional indicator defining whether a reported pair of resources may be used for simultaneous UL transmission can be used. As shown in the table of FIG. 1 , the one bit indicator, simTX, is associated with each group (i.e., pair of CRI/SSBRI) to indicate whether or not a group may be used for simultaneous multi-panel UL transmission with values 1 and 0, respectively. For example, when the indicator for the 1^st group is set to 1, it defines reported DL CRI/SSBRI resources for the 1^st group to be feasible for simultaneous multi-panel transmission. When the indicator for the 2^nd group is set to 0, it defines reported DL CRI/SSBRI resources for the 2^nd group as not feasible for simultaneous multipanel transmission.

[0028] With current configurations, there is a problem related to UL sounding reference signal (SRS) antenna switching configurations, xTyR, where the number of TX antennas, xT, is less than the number of receive antennas yR. The problem is that UEs cannot achieve an advertised maximum output power (i.e., power class (PC) from each antenna port due to routing loss and/or any other implementation loss in a radio frequency (RF) front end apart from the main antenna(s)). As a result, the UE cannot correctly perform specified UL power control for UL SRS based on downlink reference signal (DL RS) resource measurements without taking into account potential routing losses and/or any other implementation loss associated with the UE physical TX antenna port. A similar problem may arise with practical multi-panel UE implementations, where the antenna panel pairs/groups associated with simultaneous DL reception and UL transmission do not share the same implementation impairments with RF front ends associated with simultaneous reception and transmission.

[0029] When the UE reports candidate DL CSI resource pairs/groups, where the resources in the pair/group may be CRI/SSBRI or mixture of CRI and SSBRI resources, with layer-1 (LI) RSRP values/differential Ll-RSRP values, the reported CSI fields do not provide any information about the feasibility/quality between different reported pairs/groups for simultaneous UL transmission. As a result, ambiguity remains for the network scheduler to determine which of the reported CRI/SSRI may be used for scheduling decisions for simultaneous UL transmissions. Thus, certain example embodiments may address the aforementioned problems, and provide solutions to such problems accordingly.

[0030] Certain example embodiments described herein may relate to a 3GPP NR physical layer design for multiple input multiple output (MIMO) enhancements. For instance, certain example embodiments may provide enhancements in group- based beam reporting to facilitate simultaneous UL multi-panel transmission. In doing so, it may be possible for the gNB to be aware of the feasibility of simultaneous multi-panel UL transmission.

[0031] When group-based reporting with reporting for simultaneous multi-panel UL transmission is configured, the UE may determine DL CSI resource pairs/groups which are “usable/feasible/preferable” from the UE perspective for simultaneous UL transmission. Based on this determination, the UE may provide indication of usability/feasibility/preferability of simultaneous UL transmission for each reported DL CSI resource pairs/group. The UE may rank different resource pairs/group(s) into a certain order where the 1^st pair/group in the order defines the best resource pair/group for simultaneous UL transmission and, so forth. According to certain example embodiments, it may be possible to provide enhanced group-based beam reporting for simultaneous multi-panel UL transmission where at least one information related to the relative ordering of different resource pairs/groups for simultaneous multi-panel transmission is included. In some example embodiments, the resource pairs/groups are reported in the order of usability/feasibility /preferability of simultaneous UL transmission. In some example embodiments, the enhanced report may include a pair/group- specific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous UL transmission. In some example embodiment, the pair/group-specific indicator is a joint pair/group- specific simTX indicator with a length of M-bits including the at least one information related to the relative ordering. N bits of the M bits may be reserved for the indication of ordering information, and the remaining M-N bits may be reserved for simultaneous TX indicator. In an example embodiment, the N bits may be the first N MSB or the last N LSB. In some examples the (reported) DL CSI resource pairs/groups may comprise of resources (e.g. CSI-RS /SSB) that are associated with different PCI (physical cell identifier, identifier that identifies a cell) than a serving cell. In some examples, one resource in the reported resource pair may associated with a serving cell and one resource in the reported pair may be associated with different (cell) PCI than the serving cell. In a further example, reporting a DL CSI resource pair where the resources (e.g., first reported resource and the second reported resource in the pair) may be associated with a serving cell and a cell with different PCI than a serving cell may indicate to network (by the UE) that simultaneous UL transmission corresponding to the reported resources can be performed by the UE (or transmission is possible/feasible). As an example, a reported DL resource or resource pair may indicate to network that uplink transmission that are associated with the DL RS (e.g. using the DL RS as spatial relation for UL transmission) can be performed by the UE. For a DL RS, the association with a specific PCI / serving cell can be determined based on explicit configuration of the associated PCI/serving cell ID (e.g. SSB/CSI-RS) or through the QCL assumption (e.g. CSI-RS has a QCL source that is an SSB) of the source signal, wherein the source signal may be associated with a PCI/serving cell identifier (e.g. an SSB).

[0032] The pair/group-specific indicator, e.g., the N bits of the joint pair/group- specific simTX indicator, may define the relative order of the associated CSI resource pairs/groups. For example, with 4 groups, 2 bits may be reserved, where the bit field defines the following values: ‘00’ = the best group (best), ‘01’ = 2^nd best group, ‘10’ = 3^rd best group, and ‘11’ = 4* best group.

[0033] In certain example embodiments, the enhanced reporting may include an indication of whether the report includes UL simultaneous TX information, and/or of whether there is a separate report for resource pairs/groups that can be used for simultaneous UL transmission. According to certain example embodiments, the indication may be a new information field or obtained by reusing existing group-based beam reporting format where an existing information field is redefined. For example, the resource set indicator field may be set to “void” or any other values not being used currently. In an example embodiment, in a report specifically or separately for resource pairs/groups that can be used for simultaneous UL transmission, all reported pairs/groups may implicitly be assumed to be feasible from the UE perspective for simultaneous UL multi-panel transmission, and the report may include information about preferability or/and the relative ordering of the reported resource pairs/groups.

[0034] According to certain example embodiments, the enhanced reporting may include an indication of whether the report includes UL simultaneous TX information. If the indication is present, the indication indicates that the UE has prioritized in the report, the CSI resource pair/group that can be used for UL simultaneous transmission.

[0035] In other example embodiments, the enhanced reporting may include information about group/pair-specific relative power loss that may occur due to, for example, implementation loss, surrounding conditions, etc., between reported SSBRI/CRI resources of one pair/group associated with physical UE uplink TX antenna connectors/UE TX antenna ports for simultaneous UL transmission.

[0036] According to certain example embodiments, implementation loss may occur due to physical separation of different TX antenna connectors at the UE. Additionally, length of wiring between the power amplifier and TX antenna connector may vary between different UL TX antenna connectors causing power loss associated with the wiring. Furthermore, the surrounding conditions may refer to a situation where in the proximity of some panel, there may be, for example, a head of a human, which is detected by the UE internal proximity detector. As a result of proximity detection, the UE may not transmit an UL signal into this direction at all or it is allowed to transmit only into a certain direction with some regulated/configured power. Alternatively, surrounding conditions may also refer to obstacles, e.g. trucks/concrete walls/etc,, causing significant transmitted signal attenuation in downlink measurements associated with candidate CSI resource pairs/groups leading some pairs/groups to be less preferable due to required UL TX power for covering significant signal attenuation. Due to this, the surrounding conditions may also cause power loss between different TX antenna connectors associated with different antenna panels.

[0037] In certain example embodiments, the UE may determine the reported pair feasible for simultaneous UL transmission if at least one of several rules/conditions is satisfied. For example, the UE may be configured with simultaneous UL TX criterion where the UE selects only resource pairs/group whose relative power loss associated with physical UE uplink TX antenna connectors/antenna ports is smaller than X dB, where X can be predefined or configured by a network.

[0038] In certain example embodiments, the determination of feasibility may be based on a reference bandwidth (BW), where the reference BW may be the transmission BW of the previous physical uplink shared channel (PUSCH) transmission or predefined hypothetical transmission BW, or transmission BW of a codebook or non-codebook based SRS configured for the UE.

[0039] In example embodiments, the rule/condition may be at least one of that the UE can transmit simultaneously without exceeding the maximum allowed total power or effective isotropic radiated power (EIRP); that the UE can transmit simultaneously with two panels so that the difference in transmission power or EIRP difference between the panels is within a window [dB], which may be configured or predefined; or that the transmission timing difference (when there are two different TA loops for the UE) is within a time window.

[0040] According to certain example embodiments, the determination of feasibility may be based on the reception of DL reference signals (RSs). In certain example embodiments, the rule/condition may be at least one of that an estimated transmission rank is higher with a simultaneous two-panel transmission than with a single -panel transmission; or that the UE is able to transmit simultaneously with the panels used to receive the reported pair of DL RSs.

[0041] In certain example embodiments, the UE may be configured with a reporting/prioritization rule, wherein the UE reports the CSI pairs/groups that can be used for UL simultaneous transmission. According to some example embodiments, the reporting configuration may refer to RRC configuration that provides information for the UE which resource to measure, what is the measurement metric, and what are the rules or criteria to report. The criteria may be an RSRP threshold or RSRP difference threshold. In some example embodiments, if there are no CSI resources available for simultaneous UL transmission, the UE may report the RSRP value (or any measurement quantity) with a value that is not in a valid range of the reporting/prioritization rule. In certain example embodiments, the UE may indicate for each resource pair whether it can be used for DL simultaneous reception, UL simultaneous reception, or both DL and UL simultaneous reception/transmission.

[0042] FIG. 2 illustrates another exemplary table of a mapping order of CSI fields of a report, according to certain example embodiments. In particular, the table of FIG. 2 illustrates mapping order of CSI fields of one report for group- based CRI/RSRP or SSBRI/RSRP reporting for simultaneous multi-panel transmission with group-specific joint smTX CSI fields. In this example, the UE may be configured to provide an enhanced group-based beam report with the group-specific joint simTX CSI fields for two different groups. An example of such configuration is illustrated in the table of FIG. 2 where there are CSI fields up to four groups. In certain example embodiments, the UE may report two different groups with a 2-bit joint simTX indicator such that the second pair is more feasible for UL transmission with respect to the first one. The report may include one or more of various CSI fields. The CSI fields may include, for example: resource set indicator = 1 (meaning that first resource set includes the strongest Ll-RSRP value); CRI #1 of 1^st resource group; CRI #2 of 1^st resource group; CRI #1 of 2^nd resource group; CRI #2 of 2^nd resource group; differentia RSRPI of CRI of 1^st resource group; RSPR of CRI #1 of 1^st resource group; differential RSRP of CRI #2 of 1^st resource group; differential RSRP of CRI #1 of 2^nd resource group; differential RSRP of CFI #2 of 2^nd resource group; joint smTX indicator of the 1^st group = 01; and/or joint simTX indicator of the 2^nd group = 00.

[0043] In other example embodiments, the UE may be configured to provide an enhanced group-based beam report with the CSI information related to groupspecific joint smTX and group-specific power. For instance, FIG. 3 illustrates a further exemplary table of a mapping order of CSI fields of a report, according to certain example embodiments. In particular, the table of FIG. 3 illustrates an example of extended group-based CRI/RSRP or SSBRI/RSRP reporting for simultaneous multi-panel transmission with group specific joint simTX indicator and relative power loss fields.

[0044] FIG. 4 illustrates an example flow diagram of a method, according to certain example embodiments. In an example embodiment, the method of FIG. 4 may be performed by a network entity, or a group of multiple network elements in a 3 GPP system, such as LTE or 5G-NR. For instance, in an example embodiment, the method of FIG. 4 may be performed by a UE similar to one of apparatuses 10 or 20 illustrated in FIG. 6.

[0045] According to certain example embodiments, the method of FIG. 4 may include, at 400, transmitting, to a network element, a report indicating whether a pair/group of CSI resources is feasible for simultaneous UL transmission.

[0046] According to certain example embodiments, the report may provide indication of usability/feasibility/preferability of simultaneous UL transmission for each reported DL CSI resource pair/group. According to certain example embodiments, the report may include at least one information related to the relative ordering of different resource pairs/groups for simultaneous multi-panel transmission. In some example embodiments, the resource pairs/groups are reported in the order of usability/feasibility/preferability of simultaneous UL transmission. In some example embodiments, the report may include a groupspecific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous UL transmission. In some example embodiment, the group-specific indicator may be with a length of M- bits including the at least one information related to the relative ordering. N bits of the M bits may be reserved for the indication of ordering information, and the remaining M-N bits may be reserved for simultaneous TX indicator. In an example embodiment, the N bits may be the first N MSB or the last N LSB.

[0047] In certain example embodiments, the report may include an indication of whether the report includes UL simultaneous TX information, and/or of whether there is a separate report for resource pairs/groups that can be used for simultaneous UL transmission. According to certain example embodiments, the indication may be a new information field or obtained by reusing existing group- based beam reporting format where an existing information field is redefined. For example, the resource set indicator field may be set to “void” or any other values not being used currently. In an example embodiment, the report is specifically or separately for resource pairs/groups that can be used for simultaneous UL transmission, where all reported pairs/groups may implicitly be assumed to be feasible from the UE perspective for simultaneous UL multi-panel transmission, and the report may include information about preferability or/and the relative ordering of the reported resource pairs/groups. In some example embodiments, whether the pair/group of CSI resources is feasible for simultaneous UL transmission may be based on at least one of a configuration with simultaneous UL TX criterion, a reference bandwidth, or a reception of downlink reference signals. In other example embodiments, when the pair/group of CSI resources is not available, the method may further include reporting a reference signal received power with a value that is not in a valid range for a reporting configuration.

[0048] According to certain example embodiments, the report may include an indication of whether the pair/group of CSI resources is applicable for at least one of DL simultaneous reception, UL simultaneous reception, or both DL and UL simultaneous reception or transmission. According to certain example embodiments, the report may include information about group/pair-specific relative power loss. According to some example embodiments, the group-specific indicator may be associated with another pair/group of CSI resources. According to other example embodiments, the group-specific indicator may be a groupspecific two-bit indicator. According to further example embodiments, the groupspecific indicator may be associated with a pair/group of CSI resources including additional CSI related to a group-specific power field.

[0049] FIG. 5 illustrates an example flow diagram of another method, according to certain example embodiments. In an example embodiment, the method of FIG. 5 may be performed by a network entity, or a group of multiple network elements in a 3 GPP system, such as LTE or 5G-NR. For instance, in an example embodiment, the method of FIG. 5 may be performed by the network (e.g., gNB) similar to one of apparatuses 10 or 20 illustrated in FIG. 6.

[0050] According to certain example embodiments, the method of FIG. 5 may include, at 500, receiving, from a UE, a report indicating whether a pair/group of CSI resources is feasible for simultaneous UL transmission. The method may also include, at 505, determining which pair of CSI resources is applicable for simultaneous UL transmission. The method may further include, at 510, receiving simultaneous UL transmission with the determined resource.

[0051] According to certain example embodiments, the report may provide indication of usability/feasibility/preferability of simultaneous UL transmission for each reported DL CSI resource pair/group. According to certain example embodiments, the report may include at least one information related to the relative ordering of different resource pairs/groups for simultaneous multi-panel transmission. In some example embodiments, the resource pairs/groups are reported in the order of usability/feasibility/preferability of simultaneous UL transmission. In some example embodiments, the report may include a groupspecific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous UL transmission. In some example embodiment, the group-specific indicator may be with a length of M- bits including the at least one information related to the relative ordering. N bits of the M bits may be reserved for the indication of ordering information, and the remaining M-N bits may be reserved for simultaneous TX indicator. In an example embodiment, the N bits may be the first N MSB or the last N LSB.

[0052] In certain example embodiments, the report may include an indication of whether the report includes UL simultaneous TX information, and/or of whether there is a separate report for resource pairs/groups that can be used for simultaneous UL transmission. According to certain example embodiments, the indication may be a new information field or obtained by reusing existing group- based beam reporting format where an existing information field is redefined. For example, the resource set indicator field may be set to “void” or any other values not being used currently. In an example embodiment, the report is specifically or separately for resource pairs/groups that can be used for simultaneous UL transmission, where all reported pairs/groups may implicitly be assumed to be feasible from the UE perspective for simultaneous UL multi-panel transmission, and the report may include information about preferability or/and the relative ordering of the reported resource pairs/groups. In some example embodiments, whether the pair/group of CSI resources is feasible for simultaneous UL transmission may be based on at least one of a configuration with simultaneous UL TX criterion, a reference bandwidth, or a reception of downlink reference signals. In other example embodiments, when the pair/group of CSI resources is not available, the method may further include reporting a reference signal received power with a value that is not in a valid range for a reporting configuration.

[0053] According to certain example embodiments, the report may include an indication of whether the pair/group of CSI resources is applicable for at least one of DL simultaneous reception, UL simultaneous reception, or both DL and UL simultaneous reception or transmission. According to certain example embodiments, the report may include information about group/pair-specific relative power loss. According to some example embodiments, the group-specific indicator may be associated with another pair of CSI resources. According to other example embodiments, the group-specific indicator may be a groupspecific two-bit indicator. According to further example embodiments, the groupspecific indicator may be associated with a pair/group of CSI resources including additional CSI related to a group-specific power field.

[0054] FIG. 6 illustrates a set of apparatuses 10 and 20 according to certain example embodiments. In certain example embodiments, apparatuses 10 and 20 may be elements in a communications network or associated with such a network. For example, apparatus 10 may be a UE, and apparatus 20 may be a network (i.e., gNB).

[0055] In some example embodiments, apparatuses 10 and 20 may include one or more processors, one or more computer-readable storage medium (for example, memory, storage, or the like), one or more radio access components (for example, a modem, a transceiver, or the like), and/or a user interface. In some example embodiments, apparatuses 10 and 20 may be configured to operate using one or more radio access technologies, such as GSM, LTE, LTE-A, NR, 5G, WLAN, WiFi, NB-IoT, Bluetooth, NFC, MulteFire, and/or any other radio access technologies. It should be noted that one of ordinary skill in the art would understand that apparatuses 10 and 20 may include components or features not shown in FIG. 6.

[0056] As illustrated in the example of FIG. 6, apparatuses 10 and 20 may include or be coupled to a processors 12 and 22 for processing information and executing instructions or operations. Processors 12 and 22 may be any type of general or specific purpose processor. In fact, processors 12 and 22 may include one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), and processors based on a multicore processor architecture, as examples. While a single processors 12 and 22 is shown in FIG. 9, multiple processors may be utilized according to other example embodiments. For example, it should be understood that, in certain example embodiments, apparatuses 10 and 20 may include two or more processors that may form a multiprocessor system (e.g., in this case processors 12 may represent a multiprocessor) that may support multiprocessing. According to certain example embodiments, the multiprocessor system may be tightly coupled or loosely coupled (e.g., to form a computer cluster).

[0057] Processors 12 and 22 may perform functions associated with the operation of apparatuses 10 and 20 including, as some examples, precoding of antenna gain/phase parameters, encoding and decoding of individual bits forming a communication message, formatting of information, and overall control of the apparatuses 10 and 20, including processes and examples illustrated in FIGs. 1- 5.

[0058] Apparatuses 10 and 20 may further include or be coupled to a memories 14 and 24 (internal or external), which may be respectively coupled to processors 12 and 24 for storing information and instructions that may be executed by processors 12 and 24. Memories 14 and 24 may be one or more memories and of any type suitable to the local application environment, and may be implemented using any suitable volatile or nonvolatile data storage technology such as a semiconductor-based memory device, a magnetic memory device and system, an optical memory device and system, fixed memory, and/or removable memory. For example, memories 14 and 24 can be comprised of any combination of random access memory (RAM), read only memory (ROM), static storage such as a magnetic or optical disk, hard disk drive (HDD), or any other type of non- transitory machine or computer readable media. The instructions stored in memories 14 and 24 may include program instructions or computer program code that, when executed by processors 12 and 22, enable the apparatuses 10 and 20 to perform tasks as described herein. [0059] In certain example embodiments, apparatuses 10 and 20 may further include or be coupled to (internal or external) a drive or port that is configured to accept and read an external computer readable storage medium, such as an optical disc, USB drive, flash drive, or any other storage medium. For example, the external computer readable storage medium may store a computer program or software for execution by processors 12 and 22 and/or apparatuses 10 and 20 to perform any of the methods and examples illustrated in FIGs. 1-5.

[0060] In some example embodiments, apparatuses 10 and 20 may also include or be coupled to one or more antennas 15 and 25 for receiving a downlink signal and for transmitting via an UL from apparatuses 10 and 20. Apparatuses 10 and 20 may further include a transceivers 18 and 28 configured to transmit and receive information. The transceivers 18 and 28 may also include a radio interface (e.g., a modem) coupled to the antennas 15 and 25. The radio interface may correspond to a plurality of radio access technologies including one or more of GSM, LTE, LTE-A, 5G, NR, WLAN, NB-IoT, Bluetooth, BT-LE, NFC, RFID, UWB, and the like. The radio interface may include other components, such as filters, converters (for example, digital-to-analog converters and the like), symbol demappers, signal shaping components, an Inverse Fast Fourier Transform (IFFT) module, and the like, to process symbols, such as OFDMA symbols, carried by a downlink or an UL.

[0061] For instance, transceivers 18 and 28 may be configured to modulate information on to a carrier waveform for transmission by the antennas 15 and 25 and demodulate information received via the antenna 15 and 25 for further processing by other elements of apparatuses 10 and 20. In other example embodiments, transceivers 18 and 28 may be capable of transmitting and receiving signals or data directly. Additionally or alternatively, in some example embodiments, apparatus 10 may include an input and/or output device (I/O device). In certain example embodiments, apparatuses 10 and 20 may further include a user interface, such as a graphical user interface or touchscreen.

[0062] In certain example embodiments, memories 14 and 34 store software modules that provide functionality when executed by processors 12 and 22. The modules may include, for example, an operating system that provides operating system functionality for apparatuses 10 and 20. The memory may also store one or more functional modules, such as an application or program, to provide additional functionality for apparatuses 10 and 20. The components of apparatuses 10 and 20 may be implemented in hardware, or as any suitable combination of hardware and software. According to certain example embodiments, apparatuses 10 and 20 may optionally be configured to communicate each other (in any combination) via a wireless or wired communication links 70 according to any radio access technology, such as NR. [0063] According to certain example embodiments, processors 12 and 22 and memories 14 and 24 may be included in or may form a part of processing circuitry or control circuitry. In addition, in some example embodiments, transceivers 18 and 28 may be included in or may form a part of transceiving circuitry.

[0064] For instance, in certain example embodiments, apparatus 10 may be controlled by memory 14 and processor 12 to transmit, to a network element, a report indicating whether a pair/group of CSI resources is feasible for simultaneous UL transmission.

[0065] In other example embodiments, apparatus 20 may be controlled by memory 24 and processor 22 to receive, from a UE, a report indicating whether a pair/group of CSI resources is feasible for simultaneous UL transmission. Apparatus 20 may also be controlled by memory 24 and processor 22 to determine which pair of CSI resources is applicable for simultaneous UL transmission. Apparatus 20 may further be controlled by memory 24 and processor 22 to receive simultaneous UL transmission with the determined resource.

[0066] In some example embodiments, an apparatus (e.g., apparatus 10 and/or apparatus 20) may include means for performing a method, a process, or any of the variants discussed herein. Examples of the means may include one or more processors, memory, controllers, transmitters, receivers, and/or computer program code for causing the performance of the operations.

[0067] Certain example embodiments may be directed to an apparatus that includes means for performing any of the methods described herein including, for example, means for transmitting, to a network element, a report indicating whether a pair/group of CSI resources is feasible for simultaneous UL transmission. [0068] Additional example embodiments may be directed to an apparatus that includes means for performing any of the methods described herein including, for example, means for receiving, from a UE, a report indicating whether a pair/group of CSI resources is feasible for simultaneous UL transmission. The apparatus may also include means for determining which pair of CSI resources is applicable for simultaneous UL transmission. The apparatus may further include means for receiving simultaneous UL transmission with the determined resource.

[0069] Certain example embodiments described herein provide several technical improvements, enhancements, and/or advantages. For instance, in some example embodiments, it may be possible to enable the gNB to obtain further awareness about the feasibility of reported CSI resource pairs/groups and their relations between different pairs/groups for simultaneous UL transmission. With this enhanced information about the UE’s dynamic simultaneous UL transmission capability, it may be possible to avoid any ambiguity related to the feasibility of reported pairs for scheduling decisions of simultaneous UL transmission.

[0070] A computer program product may include one or more computerexecutable components which, when the program is run, are configured to carry out some example embodiments. The one or more computer-executable components may be at least one software code or portions of it. Modifications and configurations required for implementing functionality of certain example embodiments may be performed as routine(s), which may be implemented as added or updated software routine(s). Software routine(s) may be downloaded into the apparatus.

[0071] As an example, software or a computer program code or portions of it may be in a source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, distribution medium, or computer readable medium, which may be any entity or device capable of carrying the program. Such carriers may include a record medium, computer memory, readonly memory, photoelectrical and/or electrical carrier signal, telecommunications signal, and software distribution package, for example. Depending on the processing power needed, the computer program may be executed in a single electronic digital computer or it may be distributed amongst a number of computers. The computer readable medium or computer readable storage medium may be a non-transitory medium.

[0072] In other example embodiments, the functionality may be performed by hardware or circuitry included in an apparatus (e.g., apparatus 10 or apparatus 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 example embodiment, the functionality may be implemented as a signal, a nontangible means that can be carried by an electromagnetic signal downloaded from the Internet or other network.

[0073] According to certain example embodiments, an apparatus, such as a node, device, or a corresponding component, may be configured as circuitry, a computer or a microprocessor, such as single -chip computer element, or as a chipset, including at least a memory for providing storage capacity used for arithmetic operation and an operation processor for executing the arithmetic operation.

[0074] One having ordinary skill in the art will readily understand that the disclosure as discussed above may be practiced with procedures in a different order, and/or with hardware elements in configurations which are different than those which are disclosed. Therefore, although the disclosure has been described based upon these example embodiments, it would be apparent to those of skill in the art that certain modifications, variations, and alternative constructions would be apparent, while remaining within the spirit and scope of example embodiments. Although the above embodiments refer to 5G NR and LTE technology, the above embodiments may also apply to any other present or future

3GPP technology, such as LTE-advanced, and/or fourth generation (4G) technology.

[0075] Partial Glossary:

[0076] 3GPP 3rd Generation Partnership Project

[0077] 5G 5th Generation

[0078] 5GCN 5G Core Network

[0079] 5GS 5G System

[0080] AP Antenna Port [0081] AS Antenna Switching

[0082] BS Base Station

[0083] CMR Channel Measurement Resource

[0084] DCI Downlink Control Information

[0085] DL Downlink

[0086] eNB Enhanced Node B

[0087] E-UTRAN Evolved UTRAN

[0088] gNB 5G or Next Generation NodeB

[0089] LTE Long Term Evolution

[0090] MSB Most Significant Bit

[0091] NR New Radio

[0092] NW Network

[0093] NZP-CSI-RS Non-Zero-Power Channel State Information Reference

Signal

[0094] PBCH Physical Broadcast Channel

[0095] PDSCH Physical Uplink Control Channel

[0096] PUSCH Physical Uplink Shared Data Channel

[0097] QCL Quasi-Co-Location

[0098] RF Radio Frequency

[0099] RRM Radio Resource Management

[0100] RSRP Reference Signal Received Power

[0101] SRI Sounding Reference Signal Resource Indicator

[0102] SRS Sounding Reference Signal

[0103] UCI Uplink Control Information

[0104] UE User Equipment

[0105] UL Uplink

Claims

WE CLAIM:

1. A method, comprising: transmitting, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

2. The method according to claim 1, wherein the report comprises an indication of usability, feasibility, or preferability of simultaneous uplink transmission for each reported channel state information resource pair/group.

3. The method according to claims 1 or 2, wherein the report comprises an indication of whether the report comprises uplink simultaneous transmission information.

4. The method according to any of claims 1-3, wherein different channel state information resource pairs/groups are reported in the order of usability, feasibility, or preferability of simultaneous uplink transmission.

5. The method according to any of claims 1-4, wherein the report comprises at least one information related to a relative ordering of different channel state information resource pairs/groups for simultaneous uplink transmission.

6. The method according to claim 5, wherein the report comprises a pair/group-specific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous uplink transmission.

7. The method according to claim 6, wherein the pair/group-specific indicator defines the relative order of the associated pair/group for simultaneous uplink transmission.

8. The method according to any of claims 1-7, wherein the report comprises information about a group/pair-specific relative power loss for simultaneous uplink transmission between resources of an associated channel state information resource pair/group.

9. The method according to any of claims 1-8, wherein the report comprises an indication of whether the channel state information resource pair/group is applicable for at least one of the following: downlink simultaneous reception, uplink simultaneous reception, or both downlink and uplink simultaneous reception or transmission.

10. The method according to any of claims 1-9, wherein whether the channel state information resource pair/group is feasible for simultaneous uplink transmission is determined based on at least one of the following: a configuration with simultaneous uplink transmission criterion, a reference bandwidth, or a reception of downlink reference signals.

11. The method according to any of claims 1-10, further comprising: transmitting, to the network element, an indication of whether there is a separate report for channel state information resource pairs/groups that can be used for simultaneous uplink transmission.

12. A method, comprising: receiving, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission; determining which pair of channel state information resources is applicable for simultaneous uplink transmission; and receiving simultaneous uplink transmission with the determined resource.

13. The method according to claim 12, wherein the report comprises an indication of usability, feasibility, or preferability of simultaneous uplink transmission for each reported channel state information resource pair/group.

14. The method according to claims 12 or 13, the report comprises an indication of whether the report comprises uplink simultaneous transmission information.

15. The method according to any of claims 12-14, wherein different channel state information resource pairs/groups are reported in the order of usability, feasibility, or preferability of simultaneous uplink transmission.

16. The method according to any of claims 12-15, wherein the report comprises at least one information related to a relative ordering of different channel state information resource pairs/groups for simultaneous uplink transmission.

17. The method according to claim 16, wherein the report comprises a pair/group-specific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous uplink transmission.

18. The method according to claim 17, wherein the pair/group-specific indicator defines the relative order of the associated pair/group for simultaneous uplink transmission.

19. The method according to any of claims 12-18, wherein the report comprises information about a group/pair-specific relative power loss for simultaneous uplink transmission between resources of an associated channel state information resource pair/group.

20. The method according to any of claims 12-19, wherein the report comprises an indication of whether the channel state information resource pair/group is applicable for at least one of the following: downlink simultaneous reception, uplink simultaneous reception, or both downlink and uplink simultaneous reception or transmission.

21. The method according to any of claims 12-20, wherein whether the channel state information resource pair/group is feasible for simultaneous uplink transmission is determined based on at least one of the following: a configuration with simultaneous uplink transmission criterion, a reference bandwidth, or a reception of downlink reference signals.

22. The method according to any of claims 12-21, further comprising: receiving, from the user equipment, an indication of whether there is a separate report for channel state information resource pairs/groups that can be used for simultaneous uplink transmission.

23. An apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: transmit, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

24. The apparatus according to claim 23, wherein the report comprises an indication of usability, feasibility, or preferability of simultaneous uplink transmission for each reported channel state information resource pair/group.

25. The apparatus according to claims 23 or 24, wherein the report comprises an indication of whether the report comprises uplink simultaneous transmission information.

26. The apparatus according to any of claims 23-25, wherein different channel state information resource pairs/groups are reported in the order of usability, feasibility, or preferability of simultaneous uplink transmission.

27. The apparatus according to any of claims 23-26, wherein the report comprises at least one information related to a relative ordering of different channel state information resource pairs/groups for simultaneous uplink transmission.

28. The apparatus according to claim 27, wherein the report comprises a pair/group-specific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous uplink transmission.

29. The apparatus according to claim 28, wherein the pair/group-specific indicator defines the relative order of the associated pair/group for simultaneous uplink transmission.

30. The apparatus according to any of claims 23-29, wherein the report comprises information about a group/pair-specific relative power loss for simultaneous uplink transmission between resources of an associated channel state information resource pair/group.

31. The apparatus according to any of claims 23-30, wherein the report comprises an indication of whether the channel state information resource pair/group is applicable for at least one of the following: downlink simultaneous reception, uplink simultaneous reception, or both downlink and uplink simultaneous reception or transmission.

32. The apparatus according to any of claims 23-31, wherein whether the channel state information resource pair/group is feasible for simultaneous uplink transmission is determined based on at least one of the following: a configuration with simultaneous uplink transmission criterion, a reference bandwidth, or a reception of downlink reference signals.

33. The apparatus according to any of claims 26-32, wherein the apparatus is further caused to: transmit, to the network element, an indication of whether there is a separate report for channel state information resource pairs/groups that can be used for simultaneous uplink transmission.

34. An apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: receive, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission; determine which pair of channel state information resources is applicable for simultaneous uplink transmission; and receive simultaneous uplink transmission with the determined resource.

35. The apparatus according to claim 34, wherein the report comprises an indication of usability, feasibility, or preferability of simultaneous uplink transmission for each reported channel state information resource pair/group.

36. The apparatus according to claims 34 or 35, the report comprises an indication of whether the report comprises uplink simultaneous transmission information.

37. The apparatus according to any of claims 34-36, wherein different channel state information resource pairs/groups are reported in the order of usability, feasibility, or preferability of simultaneous uplink transmission.

38. The apparatus according to any of claims 34-37, wherein the report comprises at least one information related to a relative ordering of different channel state information resource pairs/groups for simultaneous uplink transmission.

39. The apparatus according to claim 38, wherein the report comprises a pair/group-specific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous uplink transmission.

40. The apparatus according to claim 39, wherein the pair/group-specific indicator defines the relative order of the associated pair/group for simultaneous uplink transmission.

41. The apparatus according to any of claims 34-40, wherein the report comprises information about a group/pair-specific relative power loss for simultaneous uplink transmission between resources of an associated channel state information resource pair/group.

42. The apparatus according to any of claims 34-41, wherein the report comprises an indication of whether the channel state information resource pair/group is applicable for at least one of the following: downlink simultaneous reception, uplink simultaneous reception, or both downlink and uplink simultaneous reception or transmission.

43. The apparatus according to any of claims 34-42, wherein whether the channel state information resource pair/group is feasible for simultaneous uplink transmission is determined based on at least one of the following: a configuration with simultaneous uplink transmission criterion, a reference bandwidth, or a reception of downlink reference signals.

44. The apparatus according to any of claims 34-43, wherein the apparatus is further caused to: receive, from the user equipment, an indication of whether there is a separate report for channel state information resource pairs/groups that can be used for simultaneous uplink transmission.

45. An apparatus, comprising: means for transmitting, to a network element, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission.

46. The apparatus according to claim 45, wherein the report comprises an indication of usability, feasibility, or preferability of simultaneous uplink transmission for each reported channel state information resource pair/group.

47. The apparatus according to claims 45 or 46, wherein the report comprises an indication of whether the report comprises uplink simultaneous transmission information.

48. The apparatus according to any of claims 45-47, wherein different channel state information resource pairs/groups are reported in the order of usability, feasibility, or preferability of simultaneous uplink transmission.

49. The apparatus according to any of claims 45-48, wherein the report comprises at least one information related to a relative ordering of different channel state information resource pairs/groups for simultaneous uplink transmission.

50. The apparatus according to claim 49, wherein the report comprises a pair/group-specific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous uplink transmission.

51. The apparatus according to claim 50, wherein the pair/group-specific indicator defines the relative order of the associated pair/group for simultaneous uplink transmission.

52. The apparatus according to any of claims 45-51, wherein the report comprises information about a group/pair-specific relative power loss for simultaneous uplink transmission between resources of an associated channel state information resource pair/group.

53. The apparatus according to any of claims 45-52, wherein the report comprises an indication of whether the channel state information resource pair/group is applicable for at least one of the following: downlink simultaneous reception, uplink simultaneous reception, or both downlink and uplink simultaneous reception or transmission.

54. The apparatus according to any of claims 45-53, wherein whether the channel state information resource pair/group is feasible for simultaneous uplink transmission is determined based on at least one of the following: a configuration with simultaneous uplink transmission criterion, a reference bandwidth, or a reception of downlink reference signals.

55. The apparatus according to any of claims 45-54, further comprising: means for transmitting, to the network element, an indication of whether there is a separate report for channel state information resource pairs/groups that can be used for simultaneous uplink transmission.

56. An apparatus, comprising: means for receiving, from a user equipment, a report indicating whether a pair/group of channel state information resources is feasible for simultaneous uplink transmission; means for determining which pair of channel state information resources is applicable for simultaneous uplink transmission; and means for receiving simultaneous uplink transmission with the determined resource.

57. The apparatus according to claim 56, wherein the report comprises an indication of usability, feasibility, or preferability of simultaneous uplink transmission for each reported channel state information resource pair/group.

58. The apparatus according to claims 56 or 57, the report comprises an indication of whether the report comprises uplink simultaneous transmission information.

59. The apparatus according to any of claims 56-58, wherein different channel state information resource pairs/groups are reported in the order of usability, feasibility, or preferability of simultaneous uplink transmission.

60. The apparatus according to any of claims 56-59, wherein the report comprises at least one information related to a relative ordering of different channel state information resource pairs/groups for simultaneous uplink transmission.

61. The apparatus according to claim 60, wherein the report comprises a pair/group-specific indicator indicating the at least one information related to the relative ordering of the associated pair/group for simultaneous uplink transmission.

62. The apparatus according to claim 61, wherein the pair/group-specific indicator defines the relative order of the associated pair/group for simultaneous uplink transmission.

63. The apparatus according to any of claims 56-62, wherein the report comprises information about a group/pair-specific relative power loss for simultaneous uplink transmission between resources of an associated channel state information resource pair/group.

64. The apparatus according to any of claims 56-63, wherein the report comprises an indication of whether the channel state information resource pair/group is applicable for at least one of the following: downlink simultaneous reception, uplink simultaneous reception, or both downlink and uplink simultaneous reception or transmission.

65. The apparatus according to any of claims 56-64, wherein whether the channel state information resource pair/group is feasible for simultaneous uplink transmission is determined based on at least one of the following: a configuration with simultaneous uplink transmission criterion, a reference bandwidth, or a reception of downlink reference signals.

66. The apparatus according to any of claims 56-65, further comprising: means for receiving, from the user equipment, an indication of whether there is a separate report for channel state information resource pairs/groups that can be used for simultaneous uplink transmission.

67. A computer readable medium comprising program instructions stored thereon for performing the method according to any of claims 1-22.

68. An apparatus comprising circuitry configured to cause the apparatus to perform a process according to any of claims 1-22.