Enhanced CSI configuration for airspace adaptation

Abstract

An apparatus is configured to receive at least two resource set configurations, where a first configuration of the at least two resource set configurations comprises: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations comprises: an indication that the first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources is different from the second type of resources; determining to use one of the at least two resource set configurations; and receiving at least one reference signal based at least in part on the determined one of the at least two resource set configurations.

Description

Technical Field

[0001] The exemplary and non-limiting embodiments relate generally to network energy conservation and, more particularly, to component shutdown for energy conservation. Background Art

[0002] In radio access network technology, it is known to achieve energy saving in base stations by switching off components. Summary of the invention

[0003] The following summary is for illustration only. It is not intended to limit the scope of the claims.

[0004] According to one aspect, a device includes: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, causes the device to at least: receive at least two resource set configurations, wherein a first configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources is different from the second type of resources; determine one of the at least two resource set configurations to be used; and receive at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0005] According to one aspect, a method includes: receiving at least two resource set configurations using a user equipment, wherein a first configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources is different from the second type of resources; determining one resource set configuration of the at least two resource set configurations to be used; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0006] According to one aspect, an apparatus includes components for performing the following items: receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources is different from the second type of resources; determining one resource set configuration of the at least two resource set configurations to be used; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0007] According to one aspect, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to at least execute: receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources is different from the second type of resources; determining one of the at least two resource set configurations to be used; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0008] According to one aspect, a device includes: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, causes the device to at least: send at least two resource set configurations to at least one user equipment, wherein a first configuration in the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration in the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; send an indication to activate one of the at least two resource set configurations to at least one user equipment; and send at least one reference signal to at least one user equipment based at least in part on the indicated configuration in the at least two resource set configurations.

[0009] According to one aspect, a method includes: sending at least two resource set configurations to at least one user equipment, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources may be different from the second type of resources; sending an indication to activate one of the at least two resource set configurations to at least one user equipment; and sending at least one reference signal to at least one user equipment based at least in part on the indicated configurations in the at least two resource set configurations.

[0010] According to one aspect, an apparatus includes components for performing the following items: sending at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; sending an indication to activate one of the at least two resource set configurations to at least one user device; and sending at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0011] According to one aspect, a non-transitory computer-readable medium includes program instructions stored thereon, which are used to at least execute: sending at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; sending an indication to activate one of the at least two resource set configurations to at least one user device; and sending at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0012] According to some aspects, the subject matter of the independent claims is provided. Some further aspects are defined in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above aspects and other features are explained in the following description taken in conjunction with the accompanying drawings, in which:

[0014] Figure 1 is a block diagram of one possible non-limiting example system in which example embodiments may be practiced;

[0015] Figure 2 is a diagram illustrating features as described herein;

[0016] Figure 3 is a diagram illustrating features as described herein;

[0017] Figure 4 is a flow chart showing the steps as described herein;

[0018] Figure 5 is a diagram illustrating features as described herein;

[0019] Figure 6 is a diagram illustrating features as described herein;

[0020] Figure 7 is a flow chart illustrating the steps as described herein; and

[0021] Figure 8 is a flow chart illustrating the steps as described herein. DETAILED DESCRIPTION

[0022] The following abbreviations that may appear in the specification and / or drawings are defined as follows:

[0023] 3GPP: Third Generation Partnership Project

[0024] 5G: Fifth Generation

[0025] 5GC: 5G core network

[0026] AMF: Access and Mobility Management Function

[0027] BS: Base Station

[0028] BWP: Bandwidth Part

[0029] CE: Control Element

[0030] CQI: Channel Quality Indicator

[0031] cRAN: Cloud Radio Access Network

[0032] CSI: Channel State Information

[0033] CSI-IM: Channel State Information for Interference Measurement

[0034] CSI-RS: Channel State Information Reference Signal

[0035] CU: Central Unit

[0036] DCI: Downlink Control Information

[0037] DL-SCH: Downlink Shared Channel

[0038] DRB: Data Radio Bearer

[0039] DTX: Discontinuous Reception

[0040] DU: Distributed Unit

[0041] eNB (or eNodeB): Evolved Node B (e.g., LTE base station)

[0042] EN-DC: E-UTRA-NR Dual Connectivity

[0043] en-gNB or en-gNB: A node that provides NR user plane and control plane protocol termination towards the UE and acts as a secondary node in EN-DC EPRE: Energy per Resource Element

[0044] E-UTRA: Evolved Universal Terrestrial Radio Access, i.e. LTE radio access technology gNB (or gNodeB): A base station for 5G / NR, i.e. a node that provides NR user plane and control plane protocol termination towards the UE and is connected to the 5GC via the NG interface

[0045] I / F: Interface

[0046] L1: Layer 1

[0047] LTE: Long Term Evolution

[0048] MAC: Media Access Control

[0049] MCS: Modulation Coding Scheme

[0050] MME: Mobility Management Entity

[0051] MMSE-IRC: Minimum Mean Square Error-Interference Rejection Combination

[0052] ng or NG: New Generation

[0053] ng-eNB or NG-eNB: Next Generation eNB

[0054] NR: New Radio

[0055] NSA: Non-Independent

[0056] N / W or NW: Network

[0057] NZP-CSI-RS: Non-Zero Power Channel State Information Reference Signal

[0058] OFDM: Orthogonal Frequency Division Multiplexing

[0059] O-RAN: Open Radio Access Network

[0060] PA: Power Amplifier

[0061] PCI: Physical Cell ID

[0062] PDCP: Packet Data Convergence Protocol

[0063] PDSCH: Physical Downlink Shared Channel

[0064] PHY: Physical layer

[0065] PL-RS: Path Loss Reference Signal

[0066] PUSCH: Physical Uplink Shared Channel

[0067] QoS: Quality of Service

[0068] RA: Random Access

[0069] RAN: Radio Access Network

[0070] RF: Radio Frequency

[0071] RI: Rating Index

[0072] RLC: Radio Link Control

[0073] RRC: Radio Resource Control

[0074] RRH: Remote Radio Head

[0075] RS: Reference signal

[0076] RSRP: Reference Signal Received Power

[0077] RSRQ: Reference Signal Received Quality

[0078] RU: Radio Unit

[0079] Rx: Receiver

[0080] SDAP: Service Data Adaptation Protocol

[0081] SGW: Serving Gateway

[0082] SI: System Information

[0083] SIB: System Information Block

[0084] SINR: Signal to Interference and Noise Ratio

[0085] SMF: Session Management Function

[0086] SR: Scheduling Request

[0087] SRS: Sounding Reference Signal

[0088] SS: Synchronous signal

[0089] SSB: Synchronization Signal Block

[0090] TCI: Transmission Configuration Indicator

[0091] TRS: Total Radiated Sensitivity

[0092] TRxP: Transmit Receive Point

[0093] Tx or TX: Transmitter / Transceiver

[0094] TXRU or TxRU: Transmitter / Transceiver Radio Unit

[0095] UE: User Equipment (e.g., wireless device, typically a mobile device)

[0096] UPF: User Plane Function

[0097] VNR: Virtualized Network Functions

[0098] ZP-CSI-RS: Zero Power Channel State Information Reference Signal

[0099] μDTX: micro discontinuous transmission

[0100] Steering Figure 1 , which shows a block diagram of one possible and non-limiting example in which the example may be practiced. A user equipment (UE) 110, a radio access network (RAN) node 170, and (multiple) network elements 190 are shown. Figure 1 In the example of , user equipment (UE) 110 wirelessly communicates with wireless network 100. UE is a wireless device that can access wireless network 100. UE 110 includes one or more processors 120, one or more memories 125, and one or more transceivers 130 interconnected by one or more buses 127. Each transceiver in one or more transceivers 130 includes a receiver Rx 132 and a transmitter Tx 133. One or more buses 127 can be address, data, or control buses, and can include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, optical fiber, or other optical communication devices. "Circuit" can include dedicated hardware or hardware associated with software executable thereon. One or more transceivers 130 are connected to one or more antennas 128. One or more memories 125 include computer program code 123. UE 110 includes module 140, module 140 includes one or both of parts 140-1 and / or 140-2, and module 140 can be implemented in a variety of ways. The module 140 may be implemented in hardware as a module 140-1, such as being implemented as part of one or more processors 120. The module 140-1 may also be implemented as an integrated circuit or by other hardware such as a programmable gate array. In another example, the module 140 may be implemented as a module 140-2, which is implemented as a computer program code 123 and is executed by one or more processors 120. For example, one or more memories 125 and the computer program code 123 may be configured to, together with the one or more processors 120, cause the user equipment 110 to perform one or more of the operations described herein. The UE 110 communicates with the RAN node 170 via a wireless link 111.

[0101] In this example, the RAN node 170 is a base station that provides access to the wireless network 100 by a wireless device, such as the UE 110. The RAN node 170 may be, for example, a base station for 5G, also referred to as New Radio (NR). In 5G, the RAN node 170 may be a NG-RAN node, which is defined as a gNB or ng-eNB. A gNB is a node that provides NR user plane and control plane protocol termination towards the UE and is connected to the 5GC (e.g., (multiple) network elements 190) via an NG interface. An ng-eNB is a node that provides E-UTRA user plane and control plane protocol termination towards the UE and is connected to the 5GC via an NG interface. The NG-RAN node may include multiple gNBs, which may also include a central unit (CU) (gNB-CU) 196 and (multiple) distributed units (DU) (gNB-DU), where DU 195 is shown. Note that a DU may include or be coupled to and control a radio unit (RU). The gNB-CU is a logical node that hosts the RRC, SDAP, and PDCP protocols of a gNB, or the RRC and PDCP protocols of an en-gNB that controls the operation of one or more gNB-DUs. The gNB-CU terminates the F1 interface connected to the gNB-DU. The F1 interface is shown as reference numeral 198, although reference numeral 198 also shows a link between a remote element of the RAN node 170 and a centralized element of the RAN node 170, such as a link between a gNB-CU 196 and a gNB-DU 195. The gNB-DU is a logical node that hosts the RLC, MAC, and PHY layers of a gNB or en-gNB, and its operation is controlled in part by the gNB-CU. One gNB-CU supports one or more cells. One cell is supported by only one gNB-DU. The gNB-DU terminates the F1 interface 198 connected to the gNB-CU. Note that the DU 195 is considered to include the transceiver 160, e.g., as part of the RU, but some examples in this regard may have the transceiver 160 as part of a separate RU, e.g., under the control of and connected to the DU 195. The RAN node 170 may also be an eNB (evolved NodeB) base station for LTE (Long Term Evolution), or any other suitable base station, access point, access node, or node.

[0102] The RAN node 170 includes one or more processors 152, one or more memories 155, one or more network interfaces (N / WI / F) 161, and one or more transceivers 160 interconnected by one or more buses 157. Each of the one or more transceivers 160 includes a receiver Rx 162 and a transmitter Tx 163. The one or more transceivers 160 are connected to one or more antennas 158. The one or more memories 155 include computer program code 153. The CU 196 may include (multiple) processors 152, memories 155, and network interfaces 161. Note that the DU 195 may also contain its own memory / memory and (multiple) processors, and / or other hardware, but these are not shown.

[0103] The RAN node 170 includes a module 150, which includes one or both of the parts 150-1 and / or 150-2, and the module 150 can be implemented in a variety of ways. The module 150 can be implemented in hardware as the module 150-1, such as being implemented as part of one or more processors 152. The module 150-1 can also be implemented as an integrated circuit, or by other hardware such as a programmable gate array. In another example, the module 150 can be implemented as a module 150-2, which is implemented as a computer program code 153 and executed by one or more processors 152. For example, one or more memories 155 and the computer program code 153 are configured to, together with the one or more processors 152, cause the RAN node 170 to perform one or more of the operations described herein. Note that the functionality of the module 150 can be distributed, such as being distributed between the DU 195 and the CU 196, or implemented solely in the DU 195.

[0104] One or more network interfaces 161 communicate over a network, such as via link 176 and link 131. Two or more gNBs 170 may communicate using, for example, link 176. Link 176 may be wired or wireless or both, and may implement, for example, an Xn interface for 5G, an X2 interface for LTE, or other suitable interfaces for other standards.

[0105] The one or more buses 157 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of wires on a motherboard or integrated circuit, optical fiber, or other optical communication device, wireless channel, etc. For example, the one or more transceivers 160 may be implemented as a remote radio head (RRH) 195 for LTE or a distributed unit (DU) 195 for a gNB implementation for 5G, where other elements of the RAN node 170 may be physically located at a different location from the RRH / DU, and the one or more buses 157 may be partially implemented as, for example, fiber optic cables or other suitable network connections for connecting other elements of the RAN node 170 (e.g., central unit (CU), gNB-CU) to the RRH / DU 195. Reference numeral 198 also indicates these (multiple) suitable network links.

[0106] Note that the descriptions herein indicate that a "cell" performs a function, but it should be clear that the device that forms the cell can perform the function. The cell constitutes part of a base station. That is, each base station can have multiple cells. For example, a single carrier frequency and associated bandwidth can have three cells, each covering one-third of a 360-degree area, so the coverage area of ​​a single base station covers an approximate ellipse or circle. In addition, each cell can correspond to a single carrier, and a base station can use multiple carriers. So if each carrier has 3 120-degree cells and there are 2 carriers, the base station has a total of 6 cells.

[0107] The wireless network 100 may include one or more network elements 190, which may include core network functions and provide connectivity to other networks such as telephone networks and / or data communication networks (e.g., the Internet) via one or more links 181. Such core network functions for 5G may include (multiple) access and mobility management functions (AMFs) and / or (multiple) user plane functions (UPFs), and / or (multiple) session management functions (SMFs). Such core network functions for LTE may include MME (mobility management entity) / SGW (serving gateway) functions. These are merely illustrative functions that may be supported by (multiple) network elements 190, and it is noted that both 5G and LTE functions may be supported. The RAN node 170 is coupled to the network element 190 via a link 131. The link 131 may be implemented as, for example, an NG interface for 5G, or an S1 interface for LTE, or other suitable interfaces for other standards. The network element 190 includes one or more processors 175, one or more memories 171, and one or more network interfaces (N / WI / F) 180 interconnected by one or more buses 185. The one or more memories 171 include computer program code 173. The one or more memories 171 and the computer program code 173 are configured to work with the one or more processors 175 to cause the network element 190 to perform one or more operations.

[0108] The wireless network 100 can implement network virtualization, which is a process of combining hardware and software network resources and network functions into a single software-based management entity or virtual network. Network virtualization involves platform virtualization, which is often used in conjunction with resource virtualization. Network virtualization is divided into external network virtualization or internal network virtualization, where external network virtualization combines many networks or network parts into virtual units, and internal network virtualization provides network-like functions for software containers on a single system. For example, a network can be deployed in a remote cloud, where virtualized network functions (VNFs) run on, for example, data center servers. For example, network core functions and / or (multiple) radio access networks (e.g., CloudRAN, O-RAN, edge cloud) can be virtualized. Note that the virtualized entities generated by network virtualization are still implemented to some extent using hardware such as processors 152 or 175 and memories 155 and 171, and such virtualized entities also produce technical effects.

[0109] It may also be noted that the operations of the example embodiments of the present disclosure may be performed by multiple cooperating devices (eg, cRAN).

[0110] Computer readable memories 125, 155, and 171 may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor-based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and removable memory. Computer readable memories 125, 155, and 171 may be components for performing storage functions. Processors 120, 152, and 175 may be of any type suitable for the local technical environment and may include, as non-limiting examples, one or more of a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. Processors 120, 152, and 175 may be components for performing functions such as control of UE 110, RAN node 170, and other functions described herein.

[0111] In general, various example embodiments of user device 110 may include, but are not limited to, a cellular telephone with wireless communication capabilities (such as a smart phone, a tablet computer, a personal digital assistant (PDA)), a portable computer with wireless communication capabilities, an image capture device with wireless communication capabilities (such as a digital camera), a gaming device with wireless communication capabilities, a music storage and playback device with wireless communication capabilities, an Internet device allowing wireless Internet access and browsing, a tablet computer with wireless communication capabilities, and a portable unit or terminal incorporating a combination of such functionality.

[0112] Therefore, having introduced a suitable but non-limiting technical context for practicing example embodiments of the present disclosure, the example embodiments will now be described in more detail.

[0113] The features described herein generally relate to network energy saving, for example in the radio access network, which consumes the largest portion of the total energy consumption in the network. In 3GPP Rel.18, RP-213554 aims to identify adaptation techniques for transmission and / or reception in the time, frequency, spatial, and power domains, as well as potential support / feedback from UE, potential UE assistance information, and information exchange / coordination on network interfaces. The current RAN1#109 agreement on Rel.18 NW ES study in May 2022 relates to the scope of the study and can be found in the invention content section of R1-2205554 "FL summary_109-e-Netw_Energy_NR-03_v091_moderator".

[0114] For example, NW energy saving can be achieved through infrequent synchronization signal block (SSB) transmission. For example, in the empty / low load situation of 5G non-standalone (NSA) deployment, a 160ms SSB period can be considered.

[0115] For example, NW energy saving can be achieved through discontinuous transmission (DTX) technology. For example, when there is no transmission to be performed, the radio unit (e.g., power amplifier (PA)) can be turned on / off. With the improvement of hardware and software capabilities, it is possible to turn off the PA on an orthogonal frequency division multiplexing (OFDM) symbol basis and can be generally applied to commercial networks. This is called micro DTX (μDTX).

[0116] For example, NW energy saving may be achieved by completely shutting down cells (ie, cell shutting), which may allow shutting down cells, frequency layers, or most hardware components of a RAN site.

[0117] For example, NW energy saving can be achieved by shutting down additional components (such as transmit antenna elements and corresponding baseband circuit systems). Adjusting the number of active TRXs and Tx power of a cell can be used as a potential way for base stations to save energy. For example, under low load conditions, the number of active TRX chains can be reduced depending on the UE location in the cell (e.g., cell edge vs. cell center). Similarly, when operating at a lower Tx power level, the transmit power level can be dynamically adjusted to utilize the transmission capacity and minimize the power amplifier power consumption (and thus minimize the total power consumption), such as Figure 2 Now refer to Figure 2 , illustrates an example of power amplifier power consumption (y-axis) as a function of transmit power for each active antenna for two physical Tx antennas (x-axis). One or more physical antennas may be mapped to one or more logical antenna ports. For example, two logical antenna ports may be mapped to one physical antenna port. For example, a single logical antenna port may be mapped to multiple physical antenna ports. It may be noted that in Figure 2 In the example of , the PA power consumption increases with the increase of the transmit power of each active antenna. From the perspective of NW energy saving, the NW can consider reducing the number of active antennas used when there is no load / low load to achieve NW energy saving.

[0118] It can be noted that the logical antenna ports correspond to specific reference signals; the UE can use these reference signals to derive channel state information related to the logical antenna ports. An example of a reference signal corresponding to a logical antenna port may be a channel state information reference signal (CSI-RS).

[0119] Features described herein may relate to CSI-RS. CSI-RS may be used for various purposes in NR. For example, they may be used for DL ​​CSI acquisition. They may also be used to derive measurements for mobility and beam management, and for interference measurements. Currently, in NR, a UE may be configured with one or several CSI-RS resource sets, where each CSI-RS resource set may include one or several configured CSI-RS resources or SSB block resources.

[0120] CSI-RS resource sets can be operated as periodic, semi-persistent, or aperiodic. CSI-RS resources can be configured with up to 32 logical antenna ports, and the density can be configurable. In the time domain, the CSI-RS resource can start from any OFDM symbol of the time slot, and depending on the number of configured ports, it can span 1, 2, or 4 OFDM symbols. Similarly, UE measurement reports of CSI can also be operated in a periodic, semi-persistent, or aperiodic manner, which is the so-called report type in the NR report configuration. However, there may be certain restrictions, based on which UE periodic reports can only operate based on configured periodic CSI-RS resource sets. UE semi-persistent reports can operate based on configured periodic and semi-persistent CSI-RS resource sets. UE aperiodic reports can operate based on periodic, semi-persistent, and aperiodic CSI-RS resource sets. In summary, periodic CSI-RS resources may be used to generate any report type; semi-persistent and periodic CSI-RS resources may be used to generate semi-persistent CSI reports; and aperiodic CSI-RS may only be used to generate aperiodic reports.

[0121] In NR, as described above, the configuration related to CSI-RS transmission may include a list of CSI-RS resource sets (see CSI-ResourceConfig in TS 38.331), where each set may include certain CSI-RS resources. For semi-persistent and aperiodic CSI-RS, the actual triggering of CSI-RS transmission may be done per CSI-RS resource set via a medium access control (MAC) control element (CE) or downlink control information (DCI).

[0122] Resource sets may be used as part of a (multiple) UE reporting configuration that describes what is to be measured and, accordingly, the measurement reports that the UE is to make. Specifically, if a CSI-RS resource set is configured as "aperiodic" via radio resource control (RRC) signaling, the CSI-RS resource set configuration may include a slot offset aperiodicTriggeringOffset that defines the time interval between triggering DCI and CSI-RS transmission. When aperiodic CSI-RS is triggered, the gNB is expected to send CSI-RS according to the slot offset defined by RRC signaling, and the UE is expected to receive CSI-RS in the indicated slot.

[0123] In addition to non-zero power channel state information reference signals (NZP-CSI-RS) that can be used for processes such as channel measurement, beam management, beam measurement, and / or connected mode mobility, zero power channel state information reference signals (ZP-CSI-RS) can also be configured. These can be empty resource elements (REs) that can be used for interference measurements. The UE may or may not monitor empty REs for interference measurements. These REs may not contain any transmissions from the UE, but may contain (multiple) transmissions from other UEs. These REs may puncture the physical downlink shared channel (PDSCH), so the UE does not want to receive any DL data in them. In other words, when some REs are allocated for other purposes, ZP-CSI-RS can be used to configure RE puncturing patterns for PDSCH.

[0124] TS 38.214 describes CSI-RS as follows:

[0125] "…5.2.2.3 Reference Signal (CSI-RS)

[0126] 5.2.2.3.1NZP CSI-RS

[0127] A UE may be configured with one or more NZP CSI-RS resource set configurations, as indicated by the higher layer parameters CSI-ResourceConfig and NZP-CSI-RS-ResourceSet.

[0128] Each NZP CSI-RS resource set consists of K>=1 NZP CSI-RS resources.

[0129] The following parameters that the UE shall adopt for CSI-RS resources with non-zero transmit power are configured for each CSI-RS resource configuration via the higher layer parameters NZP-CSI-RS-Resource, CSI-ResourceConfig, and NZP-CSI-RS-ResourceSet:

[0130] -nzp-CSI-RS-ResourceId determines the CSI-RS resource configuration identifier

[0131] …

[0132] -resourceMapping defines the number of ports, CDM type, OFDM symbol, and subcarrier occupancy of CSI-RS resources in time slot th

[0133] -nrofPorts in resourceMapping defines the number of CSI-RS ports, where the allowed values ​​are given in clause 7.4.1.5 of [4, TS38.211].

[0134] …

[0135] -powerControlOffset: It is the assumed ratio of PDSCH EPRE to NZP CSI-RS EPRE when the UE derives CSI feedback and takes values ​​in the range of [-8,15]dB (with a step size of 1dB). For CQI calculation based on NZP CSI-RS resource pairs, the powerControlOffset of each NZP CSI-RS resource in the NZP CSI-RS resources used for channel measurement is the assumed ratio of EPRE when the UE derives CSI feedback and takes values ​​in the range of [-8,15]dB (with a step size of 1dB).

[0136] -powerControlOffsetSS: This is the assumed ratio of NZP CSI-RS EPRE to SS / PBCH block EPRE.

[0137] …

[0138] - The BWP-Id in CSI-ResourceConfig defines in which bandwidth part the configured CSI-RS is located.

[0139] …

[0140] Except for the NZP CSI-RS resources used for interference measurement, all CSI-RS resources in a set are configured with the same density and the same nrofPorts.

[0141] 5.2.2.4 Channel State Information-Interference Measurement (CSI-IM)

[0142] The UE may be configured with one or more CSI-IM resource set configurations, as indicated by the higher layer parameter CSI-IM-ResourceSet. Each CSI-IM resource set consists of K ≥ 1 CSI-IM resources.

[0143] …

[0144] 5.2.2.5 CSI reference resource definition

[0145] …

[0146] When deriving CSI feedback, the UE does not expect the NZP CSI-RS resources used for channel measurement to overlap with the CSI-IM resources used for interference measurement or the NZP CSI-RS resources used for interference measurement.

[0147] 5.1.4.2 PDSCH resource mapping with RE level granularity

[0148] …

[0149] Within a BWP, a UE may be configured with one or more ZP CSI-RS resource set configurations for aperiodic, semi-persistent, and periodic time domain behavior (higher layer parameters aperiodic-ZP-CSI-RSResourceSetsToAddModList, sp-ZP-CSI-RS-ResourceSetsToAddModList, and p-ZP-CSI-RS-ResourceSet included in PDSCH-Config, respectively), where each ZP CSI-RS resource set consists of up to 16 ZP CSI-RS resources (higher layer parameter ZP-CSI-RS-Resource) in the digital technology of the BWP. The REs indicated by the pZP-CSI-RS-ResourceSet are declared unavailable for PDSCH. The REs indicated by the sp-ZP-CSI-RSResourceSetsToAddModList and aperiodic-ZP-CSI-RS-ResourceSetsToAddModList, respectively, are declared unavailable for PDSCH when their triggering and activation are applied..."

[0150] Although the present disclosure uses the term "ZP-CSI-RS", this is not limiting; other names may be used, such as "enhanced ZP-CSI-RS" or any other name used to refer to resources that the UE does not need or expect to use / recognize, such as CSI-RS. In other words, the ZP-CSI-RS resource may puncture another channel / signal (e.g., PDSCH), or another channel / signal (e.g., PDSCH) and ZP-CSI-RS may be multiplexed through rate matching. It may also be noted that in the present disclosure, ZP-CSI-RS and CSI-IM may be used interchangeably; wherever one term is used, the other term may also be used.

[0151] Reference now Figure 3, illustrates an example of a CSI-RS configuration, including NZP-CSI-RS (310), CSI-IM (320), and ZP-CSI-RS (330). It can be noted that each of the NZP-CSI-RS (310) and ZP-CSI-RS (330) allocation / descriptions includes a CSI-RS-ResourceMapping attribute that includes an indication of the number of ports nrofPorts.

[0152] Under R1-2205554, the following agreement was reached at RAN1#109 on airspace adaptability technologies to be studied as part of study project RP-213554:

[0153] “…further study the adaptation techniques and enhancements to the number of spatial elements of gNB,

[0154] Including (but not limited to) the following aspects:

[0155] Note: Spatial elements may include: (multiple) antenna elements, (multiple) TxRUs (with subarrays / fully connected), (multiple) antenna panels, (multiple) TRxPs (collocated or geographically separated from each other), (multiple) logical antenna ports (corresponding to specific signals and channels)

[0156] The impact of dynamic adaptation of spatial elements on UE operations, such as measurement, CSI feedback, power control, PUSCH / PDSCH repetition, SRS transmission, TCI configuration, beam management, beam failure recovery, radio link monitoring, cell (re)selection, handover, initial access, etc.,

[0157] Support feedback / auxiliary information from UE required for dynamic spatial element adaptation

[0158] For example, CSI measurement and reporting, SR, etc.

[0159] Signaling method for enabling dynamic spatial element adaptation, including reducing signaling

[0160] For example, group common L1 signaling, broadcast signaling, MAC CE, etc.

[0161] Dynamic TRxP adaptation;

[0162] Study on the trigger switch conditions of (multiple) TRxP

[0163] Note that this may not have an impact on the specification and can potentially depend on the network implementation.

[0164] Study of SSB, PL-RS, TRS, and CSI-RS reconfiguration and its impact on initial access procedures, synchronization, and measurements performed by idle / inactive / connected UEs Dynamic logical port adaptation and efficient port reconfiguration

[0165] Study the details of port signaling (e.g., NZP CSI-RS port) (if UE needs to know)

[0166] Study the dynamic adaptation (including activation / deactivation) of CSI measurement or port adaptation reporting

[0167] Report Configuration

[0168] Joint adaptation of spatial, frequency, and / or power domain configurations to avoid coverage loss..."

[0169] Dynamically turning on / off (multiple) antenna elements (e.g., (multiple) TxRUs or entire TRxPs) affects the number of logical antenna ports supported / used by the gNB at a given time. This in turn means that certain CSI-RS (logical) ports (mapped to the turned-off physical antenna ports) also need to be muted. It may be beneficial for the UE to receive signaling of information about which CSI-RS ports are muted or disabled, for example, to avoid unpredictable UE behavior, but this may result in high signaling overhead if the switching is dynamic (e.g., frequent). A technical effect of example embodiments of the present disclosure may be more efficient signaling of CSI-RS port reconfiguration and / or scheduling.

[0170] In an example embodiment, the gNB may configure at least two CSI-RS resource set configurations (e.g., Config-Id 1 and 2) for a UE, which may be associated with each other (i.e., correspond to each other). In an example embodiment, each CSI-RS resource set configuration may include the same CSI-RS resources / REs (e.g., for a bandwidth part (BWP) for a given UE), and each configuration may include both NZP-CSI-RS and ZP-CSI-RS / CSI-IM RS. In an example embodiment, each CSI-RS resource set configuration may differ in at least the number of ports of resources allocated to NZP-CSI-RS and ZP-CSI-RS / CSI-IM RS.

[0171] In an example embodiment, in a first configuration with nrofPortsNZP (i.e., defining the number of NZP-CSI-RS ports), at least one resource / RE associated with the NZP-CSI-RS may be associated with the ZP-CSI-RS / CSI-IM RS in a second configuration with nrofPortsZP / IM (i.e., defining the number of ZP-CSI-RS ports or CSI-IM ports).

[0172] In an example embodiment, by defining the muted ports as ZP-CSI-RS ports (or CSI-IM ports), muting of certain CSI-RS ports (the network does not perform CSI-RS transmission on them after muting the corresponding logical antenna ports) can be conveyed to the UE.

[0173] In this disclosure, for simplicity and without loss of generality, it may be assumed that the mute ports are defined as ZP-CSI-RS ports. However, this is not a limitation; the mute ports may alternatively be defined as CSI-IM ports.

[0174] In an example embodiment, the actual configuration used by the UE may be indicated by the network using L1 / L2 signaling (e.g., by sending a DCI or MAC CE pointing to the desired Config-Id). For example, when the network wishes to mute some CSI-RS ports, it may indicate this to the UE using L1 / L2 signaling, which switches the current configuration to use it for a configuration that includes ZP-CSI-RS ports (i.e., muted ports). Due to the association between the two configurations, these configurations may be considered mutually exclusive, so activation of one configuration may implicitly trigger deactivation of the associated configuration (i.e., without explicit signaling from the network). Additionally or alternatively, each configuration may be considered "active," but one configuration may override the other.

[0175] In an example embodiment, at least two configurations may be associated with each other by, for example, adding a config-ID of one configuration to (eg, a field of) another configuration.

[0176] In an example embodiment, to unmute a muted RE or port, the network may activate the corresponding NZP-CSI-RS, or may deactivate the ZP-CSI-RS that caused the muting of the RE / port. In other words, the UE may treat the deactivation (e.g., via MAC CE or DCI) of the ZP-CSI-RS as unmuting the previously muted RE / port (e.g., using the ZP-CSI-RS). Additionally or alternatively, each configuration may be considered "active", but one configuration may override another configuration that includes muting / disabling ports. In an example embodiment, the network may send an indication to the user equipment to activate a resource set configuration and / or an indication to deactivate a resource set configuration.

[0177] In an example embodiment, the UE may not assume that the "muted" REs (defined as ZP-CSI-RS resources) are "empty" resource elements (REs). Instead, the network may use these REs to send PDSCH (e.g., used to carry PDSCH payload). The network may indicate to the UE whether the "muted" REs / ports (e.g., defined as ZP-CSI-RS resources or ports) should be assumed to be empty (e.g., for PDSCH mapping and rate matching assumption purposes at the UE). For example, the indication may be carried via a DCI or MAC CE activation of the ZP-CSI-RS resources, carried by a new field / bit or using some (some) existing / reserved bits / fields. In an example embodiment, the UE may not assume that the NZP-CSI-RS resources of the device (e.g., base station) may not be mapped to resource elements corresponding to the configured ZP-CSI-RS resources. Instead, these NZP-CSI-RS REs may be assumed to be used for PDSCH transmissions of the device (e.g., base station). Additionally or alternatively, the ZP-CSI-RS configuration may contain information about whether muted REs / ports should be assumed to be "empty". When the network activates / triggers this configuration for a UE, the UE may determine what the assumption is for the corresponding muted / disabled REs / ports (e.g., whether PDSCH is mapped to the corresponding resources). The UE may monitor REs from muted / disabled logical antenna ports only for PDSCH.

[0178] Reference now Figure 4 , illustrating a signaling diagram according to (multiple) example embodiments of the present disclosure. At 415, the UE (405) may be RRC connected to a cell (410), which may be, for example, a base station or a gNB. At 420, the cell (410) may decide to use CSI-RS port adaptation, for example, according to an example embodiment of the present disclosure. At 425, the cell (410) may send at least two CSI-RS configurations to the UE (405), for example, CSI-RS Config-id1 and an associated CSI-RS Config-id2. For example, the UE (405) may be configured with one or more NZP CSI-RS resource set configurations. Each resource set configuration may consist of K>=1 NZP CSI-RS resources, where each NZP CSI-RS resource may be configured with a certain number (nrofPorts) of ports. The same applies to other resource types (e.g., ZP, CSI-IM, etc.).

[0179] Config-id1 and Config-id2 may include the same total number of REs (totRE=p1) to occupy specific time and frequency resources. In this example, Config-id1 may include all REs mapped only to NZP-CSI-RS with a large number (larger number) of ports (which is defined as nrofPortsNZP1 (e.g., p1=32)). Config-id1 may be used when no CSI-RS port muting is used. In this example, Config-id2 may include certain REs (out of the total REs) mapped to NZP-CSI-RS associated with a smaller number of ports (nrofPortsNZP2, e.g., p2=16) in Config-id1, while the remaining REs may be mapped to ZP-CSI-RS and may be configured with the remaining number of (muted) ports (i.e., p3=number of muted ports=nrofPortsZP=nrofPortsNZP1-nrofPortsNZP2=p1-p2, e.g., 16). Config-id2 may be used when a certain number (nrofPortsNZP1-nrofPortsNZP2) of ports are muted. Multiple configurations may be assigned to UEs with different numbers of muted ports to allow flexibility in network operation.

[0180] At 430, the cell (410) may send signaling to the UE (405) to activate CSI-RS Config-id1 (NZP resources). In an example embodiment, the network may use L1 / L2 signaling (e.g., DCI or MAC CE) to indicate the actual configuration to be used by the UE, pointing to the desired configuration (with Config-id) to be activated, which may be mutually exclusive with the associated configuration implicitly deactivated by the UE.

[0181] L1 / L2 signaling may include / be implemented via DCI. In an example embodiment, a group common DCI shared by multiple UEs in a cell may be used to switch the CSI-RS configuration ids of multiple UEs at once (e.g., format 2_1 or format 1_0 scrambled by SI-RNTI or another existing format or new format). This may allow for more efficient signaling, for example, when there are multiple UEs in a cell.

[0182] In one example, the network may configure a pair (or triple or quadruple, etc.) of configurations that are configured to indicate non-muting and muting of resources with the same identifier for all UEs in the cell (e.g., non-muting with id1, first muting with id2, second muting with id3, and so on). In this way, L1 / L2 signaling can indicate the same muting with a single Config-id for all UEs.

[0183] In one example, L1 / L2 signaling may indicate an index pointing to which configuration of a pair / triple / quadruple, etc., is to be activated, regardless of the actual configuration identifier assigned to the associated configuration. In the case of a pair of associated configurations, the network may indicate the use of the first configuration or the second configuration. In the case of a triple associated configuration, the network may indicate the use of the first configuration, the second configuration, or the third configuration.

[0184] At 435, the UE (405) may receive CSI-RS using CSI-RS Config-id1. Based on CSI-RS Config-id1, the UE (405) may assume that no ports are muted and may implicitly deactivate the related CSI-RS Config-id2. For example, the UE (405) may receive one or more CSI-RS 440, which may be CSI-RS transmissions (445) sent by the cell (410) based on the assumption that there are no muted ports.

[0185] At 450, the cell (410) may decide to mute certain CSI-RS ports. At 455, the cell (410) may send signaling to the UE (405) to activate CSI-RS Config-id2 (NZP+ZP resources). At 460, the UE (405) may receive CSI-RS using CSI-RS Config-id2 (assuming that the p3 port is muted), and may assume that the REs of the muted ports are empty (if configured), and may implicitly deactivate the associated CSI-RS Config-id1. For example, the UE (405) may receive one or more CSI-RS 470, which may be a CSI-RS transmission (465) sent by the cell (410) based on the assumption of muted ports.

[0186] Reference now Figure 5 , illustrates an example of a cell with eight ports operating in accordance with an example embodiment of the present disclosure, for example, where the network has determined to configure two CSI-RS configurations that are associated with each other for the UE. Figure 510 illustrates an example of a first configuration, while Figure 520 illustrates an example of a second configuration. In the first configuration, there may be no muting, which may be indicated to the UE with nrofPortsNZP1=8. In the second configuration, there may be muting, which may be indicated to the UE with nrofPortsNzp2=4 and nrofPortsZP=4. In other words, in the second configuration, four ports may be allocated to the ZP-CSI-RS and thus the UE may treat them as muted. In the first configuration, these four ports may have been designated as NZP-CSI-RS ports. Figure 5In the example, the 8-port configuration (corresponding to row 7 in Table 7.4.1.5.3-1 of TS38.211) can be switched to a 4-port configuration (corresponding to row 4 of the same table).

[0187] The technical effect of the example embodiments of the present disclosure may be to enable the use of the same resource as an NZP-CSI-RS-Resource (e.g., in a first configuration) and a ZP-CSI-RS-Resource for a given UE at different times. In an example embodiment, for a UE, overlapping resources may be "implicitly" indicated that in a configuration where such resources are defined as ZP-CSI-RS-Resources, such resources are muted, or in a configuration where such ZP-CSI-RS is activated, such resources are muted.

[0188] In an example embodiment, the ZP-CSI-RS allocation for muting of the NZP-CSI-RS may be provided under the configuration of "NZP-CSI-RS-ResourceSet" or provided as part of an enhanced "NZP-CSI-RS-ResourceSet". Although the present disclosure generally relates to using ZP-CSI-RS to mute NZP-CSI-RS, the ZP-CSI-RS may also be used to mute SSBs. For example, if the ZP-CSI-RS is provided under the configuration of "CSI-SSB-ResourceSet", the corresponding SSB may be muted. In another alternative, it may be provided under the configuration of a new "ZP-CSI-RS-ResourceSet".

[0189] In an example embodiment, the gNB may implement micro-DTX on one or more OFDM symbols in which the ZP-CSI-RS port is mapped. This may be achieved by allocating NZP-CSI-RS ports in the same time domain resources ((multiple) OFDM symbols) for multiple / all UEs to use micro-DTX in these (multiple) same OFDM symbols, where the NZP-CSI-RS ports of these UEs are muted.

[0190] Another issue associated with turning off TxRU / antenna elements is that coverage may be lost due to reduced beamforming gain of the gNB Tx RU / panel. A technical effect of example embodiments of the present disclosure may be to prevent coverage loss. In an example embodiment, a neighboring gNB may configure disjoint NZP-CSI-RS sets as muted (and therefore assigned as ZP-CSI-RS), which may have the technical effect of allowing its corresponding UE to make DL interference measurements on the muted CSI-RS. This may have the technical effect of allowing the UE to make better DL interference measurements and thereby compensate to some extent for the loss of beamforming gain. Now referring to Figure 6 , illustrating an example of beamforming gain loss when muting of antenna ports is used. When transmitting using four antennas (630), the cell / base station (610) may experience a beamforming gain loss compared to transmitting to the UE (620) using eight antennas (640). A technical effect of the example embodiments of the present disclosure may be compensating for the loss of beamforming gain, such as by using signal-free interference measurements to calculate better covariance or other statistics. This may have the technical effect of achieving better channel quality indicator (CQI) reporting and / or PDSCH demodulation using a receiver that performs interference suppression (e.g., MMSE-IRC).

[0191] In an alternative example embodiment, the network may configure at least one CSI-RS resource set configuration for the UE, the CSI-RS resource set configuration including the NZP-CSI-RS resource and the port, and also including new information for at least one port, indicating that the at least one port may potentially be muted (i.e., the at least one port may be marked as "used for muting" or "configured for muting", etc.). The network may indicate to the UE (e.g., via L1 / L2 signaling) when the muting state will be applied.

[0192] In an alternative example embodiment, the network may configure the UE with information about which ports will be muted (i.e., ports marked as ZP-CSI-RS), and may indicate to the UE when muting will be performed (via L1 / L2 signaling). This may have the technical effect of allowing the UE to omit receiving CSI-RS resources mapped to any muted ports. In an alternative example embodiment, the network may configure the UE with information about which ports may potentially be muted (e.g., by marking these ports with dynamic muting / potential ZP labels). However, the network may not send L1 / L2 signaling with an indication of the muted ports. Instead, the UE may monitor all configured CSI-RS resources and perform blind detection to determine whether any port marked for dynamic muting is currently active. At least for UEs positioned toward the center of a cell with a high SINR, (multiple) low error and low false positive detections may be expected, although this may have the technical effect of increasing UE complexity and power consumption. The network may operate muting according to this variant, for example depending on the radio quality reported by the UE (e.g., SINR / RSRP / RSRQ / CQI). Additionally or alternatively, the network may use this variant when the "silent period" is much larger than the NZP-CSI-RS period, e.g. Tmute >> TNZP-CSI-period. In this case, even UEs with low SINR / RSRP may detect silence using blind detection at multiple NZP-CSI-RS opportunities. Furthermore, in this case, a static value of the minimum Tmute may be defined, after which the UE may need to perform blind silence detection again. This may be defined as:

[0193] Tmute_min is an absolute value in milliseconds / second, or

[0194] Tmute_min is N*TNZP-CSI-period, where N is an integer.

[0195] The technical effect of the exemplary embodiments of the present disclosure may be to dynamically perform antenna port on / off using the ZP-CSI-RS / CSI-IM framework. Compared with the (multiple) traditional configurations of the ZP-CSI-RS under the PDSCH-Config (or CSI-IM-ResourceSet), in the (multiple) exemplary embodiments of the present disclosure, the configuration of the ZP-CSI-RS may be under (and associated with) the NZP-CSI-RS-ResourceSet configuration (or CSI-SSB-ResourceSet).

[0196] A technical effect of example embodiments of the present disclosure may be to enable partial recovery from coverage loss due to a reduction in the number of antennas / TxRUs by reusing muted NZP-CSI-RS for CSI-IM resources and coordinating between (multiple) neighboring cells.

[0197] A technical effect of example embodiments of the present disclosure may be to allow efficient signaling to indicate muting of CSI-RS resources, including allowing muting to be activated for multiple UEs simultaneously.

[0198] A technical effect of example embodiments of the present disclosure may be to reduce the required DL signaling overhead, since ZP-CSI-RS and port muting may be transmitted / triggered using the same message.

[0199] Figure 7 Potential steps of an example method 700 are illustrated. The example method 700 may include receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations includes an indication that a first number of ports are mapped to a first resource set used for a first type of resource, wherein a second configuration of the at least two resource set configurations includes an indication that the first number of ports are mapped to a first resource set used for a second type of resource, wherein the first type of resource is different from the second type of resource (710); determining that one of the at least two resource set configurations is to be used (720); and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations (730). The example method 700 may be performed, for example, using a user equipment. The second configuration may include an indication that a second number of ports are mapped to a second resource set used for the first type of resource. The first resource set and the second resource set may each include different resources.

[0200] Figure 8 Potential steps of an example method 800 are shown. The example method 800 may include: sending at least two resource set configurations to at least one user equipment, wherein a first configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations includes: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources is different from the second type of resources (810); sending an indication to activate one of the at least two resource set configurations to the at least one user equipment (820); and sending at least one reference signal to the at least one user equipment based at least in part on the indicated configuration of the at least two resource set configurations (830). The example method 800 may be performed, for example, by a cell, a network node, a base station, a gNB, etc.

[0201] According to an exemplary embodiment, a device may include: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, cause the device to at least: receive at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; determine one of the at least two resource set configurations to be used; and receive at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0202] The first configuration may be associated with the second configuration, wherein the first configuration and the second configuration may be configured to be used in a mutually exclusive manner.

[0203] The first configuration may include at least an identifier of the second configuration, and wherein the second configuration may include at least an identifier of the first configuration.

[0204] Determining to use one of at least two resource set configurations may include the example apparatus being further configured to: perform blind detection on at least a first number of ports to determine whether a first number of ports mapped to a first resource set are used for first type resources or for second type resources; and based on a result of the blind detection, determine to use one of the at least two resource set configurations.

[0205] Determining to use one of the at least two resource set configurations may include the example apparatus being further configured to receive an indication to activate one of the at least two resource set configurations.

[0206] The indication to activate one of the at least two resource set configurations may be received via at least one of: L1 signaling, L2 signaling, a medium access control control element, downlink control information, or signaling intended for a plurality of user equipments.

[0207] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are not used to carry downlink information of the apparatus.

[0208] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are used to carry downlink information of the device.

[0209] The indication of activating one of the at least two resource set configurations may include at least one of the following items: an indication of an identifier of one of the at least two resource set configurations to be activated, or an indication of an index of one of the at least two resource set configurations to be activated.

[0210] The first type of resources may include resources for carrying at least one of the following items: downlink data of the device, a non-zero power channel state information reference signal, a synchronization signal block, a signal for channel measurement, a signal for beam management, a signal for beam measurement, or a signal for connected mode mobility.

[0211] The second type of resources may include resources for carrying at least one of the following items: a zero-power channel state information reference signal, channel state information for interference measurement, a signal for interference measurement, downlink data of a device other than the device, or a physical downlink shared channel payload.

[0212] The second configuration may include an indication that a second number of ports are mapped to a second set of resources used for the first type of resources.

[0213] The example apparatus may also be configured to deactivate at least one of the at least two resource set configurations, wherein the at least one resource set configuration may be different from the determined configuration of the at least two resource set configurations.

[0214] The example apparatus may be further configured to, in response to the first configuration being the determined configuration of the at least two resource set configurations, receive at least one reference signal from at least one port of the first number of ports based on the first configuration.

[0215] The example apparatus may also be configured to, in response to the second configuration being a determined configuration among at least two resource set configurations, perform one of the following: use the first resource set mapped to the first number of ports for interference measurement, use the first resource set mapped to the first number of ports to receive a data channel, or ignore the first resource set mapped to the first number of ports.

[0216] According to one aspect, an example method may be provided, the example method comprising: receiving at least two resource set configurations using a user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources may be different from the second type of resources; determining one of the at least two resource set configurations to be used; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0217] The first configuration may be associated with the second configuration, wherein the first configuration and the second configuration may be configured to be used in a mutually exclusive manner.

[0218] The first configuration may include at least an identifier of the second configuration, and wherein the second configuration may include at least an identifier of the first configuration.

[0219] Determining which resource set configuration to use from at least two resource set configurations may include: performing blind detection on at least a first number of ports to determine whether a first number of ports mapped to a first resource set are used for first type resources or for second type resources; and determining, based on a result of the blind detection, which resource set configuration to use from at least two resource set configurations.

[0220] Determining to use one of the at least two resource set configurations may include receiving an indication to activate one of the at least two resource set configurations.

[0221] The indication to activate one of the at least two resource set configurations may be received via at least one of: L1 signaling, L2 signaling, a medium access control control element, downlink control information, or signaling intended for a plurality of user equipments.

[0222] The indication of activating one resource set configuration of the at least two resource set configurations may further include: an indication that the second type of resources are not used to carry downlink information of the user equipment.

[0223] The indication of activating one resource set configuration among the at least two resource set configurations may further include: an indication that the second type of resources are used to carry downlink information of the user equipment.

[0224] The indication of activating one of the at least two resource set configurations may include at least one of the following items: an indication of an identifier of one of the at least two resource set configurations to be activated, or an indication of an index of one of the at least two resource set configurations to be activated.

[0225] The first type of resources may include resources for carrying at least one of the following items: downlink data for a user equipment, a non-zero power channel state information reference signal, a synchronization signal block, a signal for channel measurement, a signal for beam management, a signal for beam measurement, or a signal for connected mode mobility.

[0226] The second type of resources may include resources for carrying at least one of the following items: a zero-power channel state information reference signal, channel state information for interference measurement, a signal for interference measurement, downlink data for a user equipment other than the user equipment, or a physical downlink shared channel payload.

[0227] The second configuration may include an indication that a second number of ports are mapped to a second set of resources used for the first type of resources.

[0228] The example method may also include deactivating at least one of the at least two resource set configurations, wherein the at least one resource set configuration may be different from the determined configuration of the at least two resource set configurations.

[0229] The example method may also include, in response to the first configuration being the determined configuration of the at least two resource set configurations, receiving at least one reference signal from at least one port of the first number of ports based on the first configuration.

[0230] The example method may also include: in response to the second configuration being a determined configuration among at least two resource set configurations, performing one of the following items: using the first resource set mapped to the first number of ports for interference measurement, using the first resource set mapped to the first number of ports to receive a data channel, or ignoring the first resource set mapped to the first number of ports.

[0231] According to an example embodiment, an apparatus may include: a circuit system configured to execute receiving at least two resource set configurations using a user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources may be different from the second type of resources; a circuit system configured to execute determining one of the at least two resource set configurations to be used; and a circuit system configured to execute receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0232] According to an example embodiment, a device may include: a processing circuit system; a memory circuit system including computer program code, the memory circuit system and the computer program code being configured to, together with the processing circuit system, enable the device to: receive at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resource, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resource, wherein the first type of resource may be different from the second type of resource; determine one of the at least two resource set configurations to be used; and receive at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0233] As used in this application, the term "circuitry" may refer to one or more or all of the following: (a) hardware circuit implementations only (such as implementations in analog and / or digital circuitry only) and (b) combinations of hardware circuitry and software, such as, as applicable: (i) a combination of analog and / or digital hardware circuits and software / firmware, and (ii) any portion of hardware processor(s) (including digital signal processor(s)), software, and memory(s) with software that work together to enable a device (such as a mobile phone or server) to perform various functions), and (iii) hardware circuits and / or processor(s), such as microprocessors or portions of microprocessors that require software (e.g., firmware) to operate, but where software is not required for operation, the software may not be present. This definition of circuitry applies to all uses of the term in this application, including in any claims. As a further example, as used in this application, the term circuitry also encompasses implementations of hardware circuitry or processor(s) or portions of hardware circuitry or processing and their accompanying software and / or firmware. For example, and if applicable to a particular claim element, the term circuitry would also cover a baseband integrated circuit or processor integrated circuit for a mobile device, or a similar integrated circuit in a server, cellular network device, or other computing or networking equipment.

[0234] According to an example embodiment, an apparatus may include components for performing the following items: receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; determining one of the at least two resource set configurations to be used; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0235] The first configuration may be associated with the second configuration, wherein the first configuration and the second configuration may be configured to be used in a mutually exclusive manner.

[0236] The first configuration may include at least an identifier of the second configuration, and wherein the second configuration may include at least an identifier of the first configuration.

[0237] A component configured to perform a determination to use one of at least two resource set configurations may include a component configured to perform the following items: perform blind detection on at least a first number of ports to determine whether a first number of ports mapped to a first resource set are used for first type resources or for second type resources; and determine, based on a result of the blind detection, to use one of the at least two resource set configurations.

[0238] The means configured to perform the determination to use one of the at least two resource set configurations may include means configured to receive an indication to activate one of the at least two resource set configurations.

[0239] The indication to activate one of the at least two resource set configurations may be received via at least one of: L1 signaling, L2 signaling, a medium access control control element, downlink control information, or signaling intended for a plurality of user equipments.

[0240] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are not used to carry downlink information of the apparatus.

[0241] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are used to carry downlink information of the device.

[0242] The indication of activating one of the at least two resource set configurations may include at least one of the following items: an indication of an identifier of one of the at least two resource set configurations to be activated, or an indication of an index of one of the at least two resource set configurations to be activated.

[0243] The first type of resources may include resources for carrying at least one of the following items: downlink data of the device, a non-zero power channel state information reference signal, a synchronization signal block, a signal for channel measurement, a signal for beam management, a signal for beam measurement, or a signal for connected mode mobility.

[0244] The second type of resources may include resources for carrying at least one of the following items: a zero-power channel state information reference signal, channel state information for interference measurement, a signal for interference measurement, downlink data of a device other than the device, or a physical downlink shared channel payload.

[0245] The second configuration may include an indication that a second number of ports are mapped to a second set of resources used for the first type of resources.

[0246] The component may also be configured to perform: deactivating at least one of the at least two resource set configurations, wherein the at least one resource set configuration may be different from the determined configuration of the at least two resource set configurations.

[0247] The component may be further configured to perform: in response to the first configuration being the determined configuration of the at least two resource set configurations, receiving at least one reference signal from at least one port of the first number of ports based on the first configuration.

[0248] The component can also be configured to perform: in response to the second configuration being a determined configuration among at least two resource set configurations, perform one of the following items: use the first resource set mapped to the first number of ports for interference measurement, use the first resource set mapped to the first number of ports to receive a data channel, or ignore the first resource set mapped to the first number of ports.

[0249] Processors, memory, and / or example algorithms (which may be encoded as instructions, programs, or codes) may be provided as example components for providing or causing the performance of operations.

[0250] According to an example embodiment, a non-transitory computer-readable medium includes instructions stored thereon, which, when executed by at least one processor, cause the at least one processor to: receive at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resource, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resource, wherein the first type of resource may be different from the second type of resource; determine one of the at least two resource set configurations to be used; and receive at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0251] According to an example embodiment, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to at least execute: receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources may be different from the second type of resources; determining to use one of the at least two resource set configurations; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0252] According to another example embodiment, a machine-readable, non-volatile program storage device may be provided, the device tangibly embodying machine-executable instructions for performing operations, the operations comprising: receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources may be different from the second type of resources; determining to use one of the at least two resource set configurations; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0253] According to another example embodiment, a non-transitory computer-readable medium includes instructions, which, when executed by an apparatus, cause the apparatus to at least perform: receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources may be different from the second type of resources; determining one of the at least two resource set configurations to be used; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0254] A computer-implemented system comprises: at least one processor and at least one non-volatile memory storing instructions, wherein the instructions, when executed by the at least one processor, cause the system to at least perform: receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resource, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resource, wherein the first type of resource may be different from the second type of resource; determining to use one of the at least two resource set configurations; and receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0255] A computer-implemented system comprises: a component for receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; a component for determining one of the at least two resource set configurations to be used; and a component for receiving at least one reference signal based at least in part on the determined configuration of the at least two resource set configurations.

[0256] According to an exemplary embodiment, a device may include: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, cause the device to at least: send at least two resource set configurations to at least one user equipment, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; send an indication to activate one of the at least two resource set configurations to at least one user equipment; and send at least one reference signal to at least one user equipment based at least in part on the indicated configuration in the at least two resource set configurations.

[0257] The first configuration may be associated with the second configuration, wherein the first configuration and the second configuration may be configured to be used in a mutually exclusive manner.

[0258] The first configuration may include at least an identifier of the second configuration, and wherein the second configuration may include at least an identifier of the first configuration.

[0259] The indication of activating one of the at least two resource set configurations may be sent via at least one of: L1 signaling, L2 signaling, a medium access control control element, downlink control information, or signaling intended for a plurality of user equipments.

[0260] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are not used to carry downlink information of at least one user equipment.

[0261] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are used to carry downlink information of at least one user equipment.

[0262] The indication of activating one of the at least two resource set configurations may include at least one of the following items: an indication of an identifier of one of the at least two resource set configurations to be activated, or an indication of an index of one of the at least two resource set configurations to be activated.

[0263] The first type of resources may include resources for carrying at least one of the following items: downlink data of the device, a non-zero power channel state information reference signal, a synchronization signal block, a signal for channel measurement, a signal for beam management, a signal for beam measurement, or a signal for connected mode mobility.

[0264] The second type of resources may include resources for carrying at least one of the following items: a zero-power channel state information reference signal, channel state information for interference measurement, a signal for interference measurement, downlink data of a device other than the device, or a physical downlink shared channel payload.

[0265] The second configuration may include an indication that a second number of ports are mapped to a second set of resources used for the first type of resources.

[0266] According to one aspect, an example method may be provided, the example method comprising: sending at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources may be different from the second type of resources; sending an indication to activate one of the at least two resource set configurations to at least one user device; and sending at least one reference signal to the at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0267] The first configuration may be associated with the second configuration, wherein the first configuration and the second configuration may be configured to be used in a mutually exclusive manner.

[0268] The first configuration may include at least an identifier of the second configuration, and wherein the second configuration may include at least an identifier of the first configuration.

[0269] The indication of activating one of the at least two resource set configurations may be sent via at least one of: L1 signaling, L2 signaling, a medium access control control element, downlink control information, or signaling intended for a plurality of user equipments.

[0270] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are not used to carry downlink information of at least one user equipment.

[0271] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are used to carry downlink information of at least one user equipment.

[0272] The indication of activating one of the at least two resource set configurations may include at least one of the following items: an indication of an identifier of one of the at least two resource set configurations to be activated, or an indication of an index of one of the at least two resource set configurations to be activated.

[0273] The first type of resources may include resources for carrying at least one of the following items: downlink data of the device, a non-zero power channel state information reference signal, a synchronization signal block, a signal for channel measurement, a signal for beam management, a signal for beam measurement, or a signal for connected mode mobility.

[0274] The second type of resources may include resources for carrying at least one of the following items: a zero-power channel state information reference signal, channel state information for interference measurement, a signal for interference measurement, downlink data of a device other than the device, or a physical downlink shared channel payload.

[0275] The second configuration may include an indication that a second number of ports are mapped to a second set of resources used for the first type of resources.

[0276] According to an example embodiment, an apparatus may include: a circuit system configured to execute sending at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for second type resources, wherein the first type of resources may be different from the second type of resources; sending an indication to activate one of the at least two resource set configurations to at least one user device; and a circuit system configured to execute sending at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0277] According to an exemplary embodiment, a device may include: a processing circuit system; a memory circuit system including computer program code, the memory circuit system and the computer program code being configured to, together with the processing circuit system, enable the device to: send at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; send an indication to activate one of the at least two resource set configurations to at least one user device; and send at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0278] According to an exemplary embodiment, an apparatus may include a component for performing the following items: sending at least two resource set configurations to at least one user equipment, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; sending an indication to activate one of the at least two resource set configurations to at least one user equipment; and sending at least one reference signal to at least one user equipment based at least in part on the indicated configuration in the at least two resource set configurations.

[0279] The first configuration may be associated with the second configuration, wherein the first configuration and the second configuration may be configured to be used in a mutually exclusive manner.

[0280] The first configuration may include at least an identifier of the second configuration, and wherein the second configuration may include at least an identifier of the first configuration.

[0281] The indication of activating one of the at least two resource set configurations may be sent via at least one of: L1 signaling, L2 signaling, a medium access control control element, downlink control information, or signaling intended for a plurality of user equipments.

[0282] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are not used to carry downlink information of at least one user equipment.

[0283] The indication of activating one of the at least two resource set configurations may further include an indication that the second type of resources are used to carry downlink information of at least one user equipment.

[0284] The indication of activating one of the at least two resource set configurations may include at least one of the following items: an indication of an identifier of one of the at least two resource set configurations to be activated, or an indication of an index of one of the at least two resource set configurations to be activated.

[0285] The first type of resources may include resources for carrying at least one of the following items: downlink data of the device, a non-zero power channel state information reference signal, a synchronization signal block, a signal for channel measurement, a signal for beam management, a signal for beam measurement, or a signal for connected mode mobility.

[0286] The second type of resources may include resources for carrying at least one of the following items: a zero-power channel state information reference signal, channel state information for interference measurement, a signal for interference measurement, downlink data of a device other than the device, or a physical downlink shared channel payload.

[0287] The second configuration may include an indication that a second number of ports are mapped to a second set of resources used for the first type of resources.

[0288] According to an exemplary embodiment, a non-transitory computer-readable medium includes instructions stored thereon, which, when executed by at least one processor, cause the at least one processor to: send at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resource, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resource, wherein the first type of resource may be different from the second type of resource; send an indication to activate one of the at least two resource set configurations to at least one user device; and send at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0289] According to an exemplary embodiment, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to at least execute: sending at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resource, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resource, wherein the first type of resource may be different from the second type of resource; sending an indication to activate one of the at least two resource set configurations to at least one user device; and sending at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0290] According to another example embodiment, a machine-readable, non-transitory program storage device may be provided, the device tangibly embodying machine-executable instructions for performing operations, the operations comprising: sending at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resource, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resource, wherein the first type of resource may be different from the second type of resource; sending an indication to activate one of the at least two resource set configurations to at least one user device; and sending at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0291] According to another example embodiment, a non-transitory computer-readable medium comprises instructions, which, when executed by an apparatus, cause the apparatus to at least perform: sending at least two resource set configurations to at least one user device, wherein a first configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; sending an indication to activate one of the at least two resource set configurations to at least one user device; and sending at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0292] A computer-implemented system comprises: at least one processor, and at least one non-volatile memory storing instructions, wherein the instructions, when executed by the at least one processor, cause the system to at least perform: sending at least two resource set configurations to at least one user device, wherein a first configuration in the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resource, wherein a second configuration in the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resource, wherein the first type of resource may be different from the second type of resource; sending an indication to activate one of the at least two resource set configurations to at least one user device; and sending at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0293] A computer-implemented system comprises: a component for sending at least two resource set configurations to at least one user device, wherein a first configuration in the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration in the at least two resource set configurations may include: an indication that a first number of ports are mapped to a first resource set used for a second type of resources, wherein the first type of resources may be different from the second type of resources; sending an indication to activate one of the at least two resource set configurations to at least one user device; and a component for sending at least one reference signal to at least one user device based at least in part on the indicated configuration in the at least two resource set configurations.

[0294] The term "non-transitory" as used herein is a restriction on the medium itself (ie, tangible, not a signal), not on the persistence of data storage (eg, RAM vs. ROM).

[0295] It should be understood that the above description is illustrative only. Those skilled in the art may design various alternatives and modifications. For example, the features described in the various dependent claims may be combined with each other in any suitable (multiple) combination. In addition, the features from the above-mentioned different embodiments may be selectively combined into new embodiments. Therefore, this specification is intended to include all such alternatives, modifications, and variations that fall within the scope of the appended claims.

Claims

1. A device comprising: at least one processor; as well as at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: receiving at least two resource set configurations, wherein a first configuration of the at least two resource set configurations comprises: an indication that a first number of ports are mapped to a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations comprises: an indication that the first number of ports are mapped to the first resource set used for a second type of resources, wherein the first type of resources is different from the second type of resources; determining to use one of the at least two resource set configurations; and At least one reference signal is received based at least in part on the determined one of the at least two resource set configurations. 2 . The apparatus of claim 1 , wherein the first configuration is associated with the second configuration, wherein the first configuration and the second configuration are configured to be used in a mutually exclusive manner.

3. The apparatus according to claim 1 or 2, wherein the first configuration comprises at least an identifier of the second configuration, and wherein the second configuration comprises at least an identifier of the first configuration.

4. The apparatus according to any one of claims 1 to 3, wherein determining to use the one resource set configuration of the at least two resource set configurations comprises: The at least one memory stores the instructions, which when executed by the at least one processor, cause the apparatus to: Performing blind detection on at least the first number of the ports to determine whether the first number of ports mapped to the first resource set are used for the first type of resources or for the second type of resources; as well as Based on a result of the blind detection, it is determined that the one resource set configuration among the at least two resource set configurations is to be used.

5. The apparatus according to any one of claims 1 to 3, wherein determining to use the one resource set configuration among the at least two resource set configurations comprises: The at least one memory stores the instructions, which when executed by the at least one processor, cause the apparatus to: An indication to activate the one of the at least two resource set configurations is received.

6. The apparatus of claim 5, wherein the indication to activate the one of the at least two resource set configurations is received via at least one of: L1 signaling, L2 signaling, Media Access Control element, Downlink control information, or Intended for signaling of multiple user equipments.

7. The apparatus according to claim 5 or 6, wherein the indication of activating the one resource set configuration of the at least two resource set configurations further comprises: An indication that the second type of resources are not used to carry downlink information for the apparatus.

8. The apparatus according to claim 5 or 6, wherein the indication of activating the one resource set configuration of the at least two resource set configurations further comprises: The second type of resources is used to carry an indication of downlink information of the apparatus.

9. The apparatus according to any one of claims 5 to 8, wherein the indication of activating the one resource set configuration of the at least two resource set configurations comprises at least one of the following items: an indication of an identifier of the one of the at least two resource set configurations to be activated, or An indication of an index of the one of the at least two resource set configurations to be activated.

10. The apparatus according to any one of claims 1 to 9, wherein the first type of resources comprises resources for carrying at least one of the following items: downlink data of the device, Non-zero power channel state information reference signal, Synchronous signal block, Signal for channel measurement, Signals for beam management, A signal for beam measurement, or Signaling used for connected mode mobility.

11. The apparatus according to any one of claims 1 to 10, wherein the second type of resources comprises resources for carrying at least one of the following items: Zero-power channel state information reference signal, Channel state information for interference measurements, Signals used for interference measurements, downlink data from a device other than the device, or Physical downlink shared channel payload.

12. The apparatus according to any one of claims 1 to 11, wherein the second configuration comprises: The second number of ports is mapped to an indication of a second set of resources to be used for the first type of resources.

13. The apparatus according to any one of claims 1 to 12, wherein the at least one memory stores the instructions, which when executed by the at least one processor, cause the apparatus to: At least one resource set configuration of the at least two resource set configurations is deactivated, wherein the at least one resource set configuration is different from the determined configuration of the at least two resource set configurations.

14. The apparatus according to any one of claims 1 to 13, wherein the at least one memory stores the instructions, which when executed by the at least one processor, cause the apparatus to: In response to the first configuration being the determined configuration among the at least two resource set configurations, the at least one reference signal is received from at least one port of the first number of ports based on the first configuration.

15. The apparatus according to any one of claims 1 to 13, wherein the at least one memory stores the instructions, which when executed by the at least one processor, cause the apparatus to: In response to the second configuration being the determined configuration of the at least two resource set configurations, performing one of the following: using the first set of resources mapped to the first number of ports for interference measurement, receiving a data channel using said first set of resources mapped to said first number of ports, or The first set of resources mapped to the first number of ports is ignored.

16. A method comprising: Receiving, with a user equipment, at least two resource set configurations, wherein a first configuration of the at least two resource set configurations comprises: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations comprises: an indication that the first number of ports are mapped to the first resource set used for second type resources, wherein the first type resources are different from the second type resources; determining to use one of the at least two resource set configurations; and At least one reference signal is received based at least in part on the determined one of the at least two resource set configurations.

17. The method of claim 16, wherein the first configuration is associated with the second configuration, wherein the first configuration and the second configuration are configured to be used in a mutually exclusive manner.

18. The method of claim 16 or 17, wherein the first configuration comprises at least an identifier of the second configuration, and wherein the second configuration comprises at least an identifier of the first configuration.

19. The method according to any one of claims 16 to 18, wherein determining to use the one resource set configuration among the at least two resource set configurations comprises: Performing blind detection on at least the first number of the ports to determine whether the first number of ports mapped to the first resource set are used for the first type of resources or for the second type of resources; as well as Based on a result of the blind detection, it is determined that the one resource set configuration among the at least two resource set configurations is to be used.

20. The method according to any one of claims 16 to 19, wherein determining to use the one resource set configuration of the at least two resource set configurations comprises: An indication to activate the one of the at least two resource set configurations is received.

21. The method of claim 20, wherein the indication to activate the one of the at least two resource set configurations is received via at least one of: L1 signaling, L2 signaling, Media Access Control element, Downlink control information, or Intended for signaling of multiple user equipments.

22. The method according to claim 20 or 21, wherein the indication of activating the one resource set configuration of the at least two resource set configurations further comprises: The second type of resources are not used to carry an indication of downlink information of the user equipment.

23. The method according to claim 20 or 21, wherein the indication of activating the one resource set configuration of the at least two resource set configurations further comprises: The second type of resources is used to carry an indication of downlink information of the user equipment.

24. The method according to any one of claims 20 to 23, wherein the indication of activating the one of the at least two resource set configurations comprises at least one of the following: an indication of an identifier of the one of the at least two resource set configurations to be activated, or An indication of an index of the one of the at least two resource set configurations to be activated.

25. The method according to any one of claims 20 to 24, wherein the first type of resources comprises resources for carrying at least one of the following: downlink data of the user equipment, Non-zero power channel state information reference signal, Synchronous signal block, Signal for channel measurement, Signals for beam management, A signal for beam measurement, or Signaling used for connected mode mobility.

26. The method according to any one of claims 16 to 25, wherein the second type of resources comprises resources for carrying at least one of the following: Zero-power channel state information reference signal, Channel state information for interference measurements, Signals used for interference measurements, downlink data of a user equipment other than the user equipment, or Physical downlink shared channel payload.

27. The method of any one of claims 16 to 26, wherein the second configuration comprises: The second number of ports is mapped to an indication of a second set of resources to be used for the first type of resources.

28. The method according to any one of claims 16 to 27, further comprising: At least one resource set configuration of the at least two resource set configurations is deactivated, wherein the at least one resource set configuration is different from the determined configuration of the at least two resource set configurations.

29. The method according to any one of claims 16 to 28, further comprising: In response to the first configuration being the determined configuration among the at least two resource set configurations, the at least one reference signal is received from at least one port of the first number of ports based on the first configuration.

30. The method according to any one of claims 16 to 29, further comprising: In response to the second configuration being the determined configuration of the at least two resource set configurations, performing one of the following: using the first set of resources mapped to the first number of ports for interference measurement, receiving a data channel using said first set of resources mapped to said first number of ports, or The first set of resources mapped to the first number of ports is ignored.

31. An apparatus comprising means for performing: At least two resource set configurations are received, wherein a first configuration of the at least two resource set configurations comprises: A first number of ports is mapped to an indication of a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations comprises: the first number of the ports is mapped to an indication of the first resource set used for a second type of resources, wherein the first type of resources is different from the second type of resources; determining to use one of the at least two resource set configurations; and At least one reference signal is received based at least in part on the determined one of the at least two resource set configurations.

32. An apparatus comprising: at least one processor; as well as at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: sending at least two resource set configurations to at least one user equipment, wherein a first configuration of the at least two resource set configurations comprises: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations comprises: an indication that the first number of ports are mapped to the first resource set used for second type resources, wherein the first type resources are different from the second type resources; sending an indication to the at least one user equipment to activate one of the at least two resource set configurations; and At least one reference signal is sent to the at least one user equipment based at least in part on the indicated one of the at least two resource set configurations.

33. The apparatus of claim 32, wherein the first configuration is associated with the second configuration, wherein the first configuration and the second configuration are configured to be used in a mutually exclusive manner.

34. An apparatus according to claim 32 or 33, wherein the first configuration comprises at least an identifier of the second configuration, and wherein the second configuration comprises at least an identifier of the first configuration.

35. The apparatus according to any one of claims 32 to 34, wherein the indication to activate the one of the at least two resource set configurations is sent via at least one of: L1 signaling, L2 signaling, Media Access Control element, Downlink control information, or Intended for signaling of multiple user equipments.

36. The apparatus according to any one of claims 32 to 35, wherein the indication to activate the one of the at least two resource set configurations further comprises: The second type of resources are not used to carry an indication of downlink information of the at least one user equipment.

37. The apparatus according to any one of claims 32 to 35, wherein the indication to activate the one of the at least two resource set configurations further comprises: The second type of resources is used to carry an indication of downlink information of the at least one user equipment.

38. The apparatus according to any one of claims 32 to 37, wherein the indication to activate the one of the at least two resource set configurations comprises at least one of the following: an indication of an identifier of the one of the at least two resource set configurations to be activated, or An indication of an index of the one of the at least two resource set configurations to be activated.

39. The apparatus according to any one of claims 32 to 38, wherein the first type of resources comprises resources for carrying at least one of the following: downlink data of the device, Non-zero power channel state information reference signal, Synchronous signal block, Signal for channel measurement, Signals for beam management, A signal for beam measurement, or Signaling used for connected mode mobility.

40. The apparatus according to any one of claims 32 to 39, wherein the second type of resources comprises resources for carrying at least one of the following: Zero-power channel state information reference signal, Channel state information for interference measurements, Signals used for interference measurements, downlink data from a device other than the device, or Physical downlink shared channel payload.

41. The apparatus of any one of claims 32 to 40, wherein the second configuration comprises: The second number of ports is mapped to an indication of a second set of resources to be used for the first type of resources.

42. A method comprising: sending at least two resource set configurations to at least one user equipment, wherein a first configuration of the at least two resource set configurations comprises: an indication that a first number of ports are mapped to a first resource set used for first type resources, wherein a second configuration of the at least two resource set configurations comprises: an indication that the first number of ports are mapped to the first resource set used for second type resources, wherein the first type resources are different from the second type resources; sending an indication to the at least one user equipment to activate one of the at least two resource set configurations; and At least one reference signal is sent to the at least one user equipment based at least in part on the indicated one of the at least two resource set configurations.

43. The method of claim 42, wherein the first configuration is associated with the second configuration, wherein the first configuration and the second configuration are configured to be used in a mutually exclusive manner.

44. A method according to claim 42 or 43, wherein the first configuration comprises at least an identifier of the second configuration, and wherein the second configuration comprises at least an identifier of the first configuration.

45. The method according to any one of claims 42 to 44, wherein the indication to activate the one of the at least two resource set configurations is sent via at least one of: L1 signaling, L2 signaling, Media Access Control Control Element, Downlink control information, or Intended for signaling of multiple user equipments.

46. ​​The method according to any one of claims 42 to 45, wherein the indication of activating the one resource set configuration of the at least two resource set configurations further comprises: The second type of resources are not used to carry an indication of downlink information of the at least one user equipment.

47. The method according to any one of claims 42 to 45, wherein the indication of activating the one resource set configuration of the at least two resource set configurations further comprises: The second type of resources is used to carry an indication of downlink information of the at least one user equipment.

48. The method according to any one of claims 42 to 47, wherein the indication to activate the one of the at least two resource set configurations comprises at least one of the following: an indication of an identifier of the one of the at least two resource set configurations to be activated, or An indication of an index of the one of the at least two resource set configurations to be activated.

49. An apparatus comprising means for performing: Sending at least two resource set configurations to at least one user equipment, wherein a first configuration of the at least two resource set configurations includes: A first number of ports is mapped to an indication of a first resource set used for a first type of resources, wherein a second configuration of the at least two resource set configurations comprises: the first number of the ports is mapped to an indication of the first resource set used for a second type of resources, wherein the first type of resources is different from the second type of resources; sending an indication to the at least one user equipment to activate one of the at least two resource set configurations; and At least one reference signal is sent to the at least one user equipment based at least in part on the indicated one of the at least two resource set configurations.

50. An apparatus comprising means for performing a method according to any one of claims 16 to 30 or any one of claims 42 to 48.

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