Filtering of layer 1 beam measurements for L1 / 2 inter-cell mobility

Abstract

An apparatus may be configured to receive two or more filtering configurations, where a first configuration is associated with at least one first target cell associated with a first distributed unit, where a second configuration is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; selecting a configuration of two or more configurations for the at least one target cell based at least in part on a determination of whether the serving cell and the at least one target cell are controlled by the same distributed unit, where the serving cell is controlled by the first distributed unit; and performing filtering on a plurality of layer-one measurements associated with the at least one target cell using the selected configuration.

Description

Technical Field

[0001] The exemplary and non-limiting embodiments relate generally to low layer mobility (LLM), and more specifically to filtering of L1 beam measurements. Background Art

[0002] In inter-cell mobility, it is known to provide a UE with a configuration for reporting L1 beam measurements. 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 two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; select a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the first distributed unit; and use the selected configuration to perform filtering on multiple layer one measurements associated with at least one target cell.

[0005] According to one aspect, a method includes: receiving two or more filtering configurations using a user device, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the first distributed unit; and performing filtering on multiple layer one measurements associated with the at least one target cell using the selected configuration.

[0006] According to one aspect, an apparatus includes components for performing the following: receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the first distributed unit; and performing filtering on multiple layer one measurements associated with the at least one target cell using the selected configuration.

[0007] According to one aspect, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: causing two or more filtering configurations to be received, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the first distributed unit; and performing filtering on multiple layer one measurements associated with at least one target cell using the selected configuration.

[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 two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and receive a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0009] According to one aspect, a method includes: using a centralized unit to send two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and receiving a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0010] According to one aspect, an apparatus includes components for performing the following items: sending two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and receiving a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0011] According to one aspect, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: causing two or more filtering configurations to be sent to a user equipment, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and causing a radio resource control reconfiguration completion message to be received from the user equipment in response to the two or more filtering configurations.

[0012] 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 two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the device, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the device; select a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the device; receive a layer one measurement report from a user equipment, wherein the layer one measurement report includes multiple layer one measurements associated with at least one target cell; and perform filtering on the multiple layer one measurements using the selected configuration.

[0013] According to one aspect, a method includes: receiving two or more filtering configurations using a distributed unit, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the distributed unit; selecting a configuration from the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the distributed unit; receiving a layer one measurement report from a user equipment, wherein the layer one measurement report includes multiple layer one measurements associated with the at least one target cell; and performing filtering on the multiple layer one measurements using the selected configuration.

[0014] According to one aspect, an apparatus includes components for performing the following items: receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the apparatus, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the apparatus; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the apparatus; receiving a layer one measurement report from a user equipment, wherein the layer one measurement report includes multiple layer one measurements associated with at least one target cell; and performing filtering on the multiple layer one measurements using the selected configuration.

[0015] According to one aspect, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: causing two or more filtering configurations to be received using a distributed unit, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the distributed unit; selecting a configuration from the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the distributed unit; causing a layer one measurement report to be received from a user device, wherein the layer one measurement report includes multiple layer one measurements associated with at least one target cell; and performing filtering on the multiple layer one measurements using the selected configuration.

[0016] 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: determine two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and send the two or more filtering configurations to the first distributed unit.

[0017] According to one aspect, a method includes: determining two or more filtering configurations using a centralized unit, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and sending the two or more filtering configurations to the first distributed unit.

[0018] According to one aspect, an apparatus includes components for performing the following items: determining two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and sending the two or more filtering configurations to the first distributed unit.

[0019] According to one aspect, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following: determining two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and causing the two or more filtering configurations to be sent to the first distributed unit.

[0020] According to one aspect, an apparatus includes: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, causes the apparatus to at least: cause at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment is served via a service cell of a first distributed unit; and send two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the first distributed unit, and wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the first distributed unit.

[0021] According to one aspect, a method includes: using a centralized unit to transmit at least one filtering configuration to a user equipment, wherein the user equipment is served via a service cell of a first distributed unit; and sending two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the first distributed unit, and wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the first distributed unit.

[0022] According to one aspect, an apparatus includes components for performing the following items: causing at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment is served via a service cell of a first distributed unit; and sending two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the first distributed unit, and wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the first distributed unit.

[0023] According to one aspect, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: causing at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment is served via a service cell of a first distributed unit; and causing two or more filtering configurations to be sent to the first distributed unit, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the first distributed unit, and wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the first distributed unit.

[0024] 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

[0025] The above aspects and other features are explained in the following description taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a block diagram of one possible non-limiting example system in which example embodiments may be practiced;

[0027] Figure 2 is a flow chart illustrating the steps as described herein;

[0028] Figure 3 is a diagram illustrating features as described herein;

[0029] Figure 4 is a flow chart illustrating the steps as described herein;

[0030] Figure 5 is a flow chart illustrating the steps as described herein;

[0031] Figure 6 is a flow chart illustrating the steps as described herein;

[0032] Figure 7 is a flow chart illustrating the steps as described herein;

[0033] Figure 8 is a flow chart illustrating the steps as described herein;

[0034] Fig. 9 is a flow chart illustrating the steps as described herein; and

[0035] Fig.10 is a flow chart illustrating the steps as described herein. DETAILED DESCRIPTION

[0036] The following abbreviations that may appear in the specification and / or drawings are defined as follows:

[0037] 3GPP: Third Generation Partnership Project

[0038] 5G: Fifth Generation

[0039] 5GC: 5G core network

[0040] AMF: Access and Mobility Management Function

[0041] CE: Control Element

[0042] CLI: Cross-link interference

[0043] cRAN: Cloud Radio Access Network

[0044] CSI-RS: Channel State Information Reference Signal

[0045] CU: Central / Centralized Unit

[0046] DRX: Discontinuous Reception

[0047] DU: Distributed Unit

[0048] eNB (or eNodeB): Evolved Node B (e.g., LTE base station)

[0049] EN-DC: E-UTRA-NR Dual Connectivity

[0050] 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

[0051] E-UTRA: Evolved Universal Terrestrial Radio Access, also known as LTE radio access technology FDD: Frequency Division Duplex

[0052] gNB (or gNodeB): A base station for 5G / NR, i.e., providing NR user plane and control plane protocol termination towards the UE and communicating via NG

[0053] Interface connected to 5GC node

[0054] I / F: Interface

[0055] L1: Layer 1

[0056] L3: Layer 3

[0057] LLM: Low Layer Mobility

[0058] LTE: Long Term Evolution

[0059] MAC: Media Access Control

[0060] MME: Mobility Management Entity

[0061] ng or NG: New Generation

[0062] ng-eNB or NG-eNB: Next Generation eNB

[0063] NR: New Radio

[0064] N / W or NW: Network

[0065] OAM: Operations, Administration, and Maintenance

[0066] O-RAN: Open Radio Access Network

[0067] PDCCH: Physical Downlink Control Channel

[0068] PDCP: Packet Data Convergence Protocol

[0069] PHY: Physical layer

[0070] QCL: Quasi Collocated

[0071] RACH: Random Access Channel

[0072] RAN: Radio Access Network

[0073] RF: Radio Frequency

[0074] RLC: Radio Link Control

[0075] RRC: Radio Resource Control

[0076] RRH: Remote Radio Head

[0077] RS: Reference signal

[0078] RSRP: Reference Signal Received Power

[0079] RSRQ: Reference Signal Received Quality

[0080] RU: Radio Unit

[0081] Rx: Receiver

[0082] SDAP: Service Data Adaptation Protocol

[0083] SDU: Service Data Unit

[0084] SGW: Serving Gateway

[0085] SINR: Signal to Interference and Noise Ratio

[0086] SMF: Session Management Function

[0087] SSB: Synchronization Signal Block

[0088] TTT: Trigger Time

[0089] Tx: Transmitter

[0090] UE: User Equipment (e.g., wireless device, typically a mobile device)

[0091] UPF: User Plane Function

[0092] UTRA: Universal Terrestrial Radio Access

[0093] VNR: Virtualized Network Functions

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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 note 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.

[0102] 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.

[0103] 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).

[0104] 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.

[0105] 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.

[0106] 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.

[0107] In the present disclosure, the terms target cell, prepared candidate target cell, prepared cell, candidate cell, candidate target cell, and target cell may be used interchangeably. In the present disclosure, the terms L1 / 2 inter-cell mobility, low layer mobility, and L1 / 2 handover may be used interchangeably.

[0108] The features described herein may relate to L1 / 2 inter-cell mobility or low layer mobility (LLM). L1 / 2 inter-cell mobility is one of the goals of mobility enhancement in Rel. 18. In contrast to the L3 mobility procedure, where the handover between two cells is decided by the RRC layer, L1 / 2 inter-cell mobility is performed by the MAC layer terminated in the distributed unit (DU). Now refer to Figure 2, illustrates an exemplary implementation of a signaling diagram for L1 / 2 inter-cell mobility from a serving cell in DU1 (210) to a target cell in DU2 (220) (i.e., an inter-DU intra-CU scenario). The same diagram can also be applied to an intra-DU intra-CU cell change scenario, where DU1 (210) will be the same as DU2 (i.e., DU2 (220) will be in Figure 2 is replaced by DU1(210)).

[0109] At 225, the UE (205) may send a measurement report containing cell quality measurements of the serving cell and neighboring cells. The UE (205) may be configured by the serving cell to send the measurement report as early as possible while it still has a good connection with the serving cell. At 230, DU1 (210) may forward the measurement report to the CU (215). Using the reported cell quality measurements, the CU (215) may identify a set of potential candidate target cells to which the UE (205) may switch. In this example, the CU (215) may identify candidate target cells served by DU1 (210) (e.g., also controlling the serving DU / cell) and another DU2 (220) controlled by the same CU (215).

[0110] At 235, CU (215) may request the preparation of a candidate target cell controlled by DU1 (210) by sending a UE CONTEXT MODIFY REQUEST message. At 240, DU1 (210) may provide the configuration of UE (205) in a UE CONTEXT MODIFY RESPONSE message containing a container from DU to CU.

[0111] At 245, CU (215) may send a UE context setup request to DU2 (220). At 250, DU2 (220) may send a UE context setup response message to CU (215), which may include a DU to CU container. DU2 (220) may prepare target cell(s) controlled by DU2 (220).

[0112] At 255, after receiving the UE configuration of the candidate target cell(s), the CU (215) may generate an RRC reconfiguration message configured to be sent to the UE (205). The RRC reconfiguration message may contain, among other information: a measurement report configuration for L1 / 2 handover (i.e., a configuration on how to report L1 beam measurements of the serving cell and the target cell, e.g., at 270); and / or a configuration of the prepared candidate cell(s), which the UE (205) may need to perform when receiving a MAC CE command to change the serving cell (perform handover), e.g., as shown at 275. At 260, the CU (215) may send the generated RRC reconfiguration message to the UE (205).

[0113] After confirming the RRC reconfiguration to the network at 265, the UE (205) may start periodically reporting L1 beam measurements of the serving and candidate target cells at 270. Upon determining that there is a target candidate cell with better radio link / beam measurements than the serving cell (e.g., target beam measured L1-RSRP> serving beam measured L1-RSRP+offset) for a period of time (e.g., time to trigger (TTT)), the serving cell (210) may send a MAC control element (MAC CE) or L1 message at 275 to trigger a cell change to the target candidate cell (e.g., 220). At 280, the UE may perform a handover from the serving cell (210) to the target cell (220).

[0114] Features described herein may relate to L3 filtering for cell quality and beam measurements. Figure 2 The measurement report at 225 in 3GPP TS 38.300 may contain a cell quality measurement and, optionally, an L3 beam measurement. The cell quality measurement may be calculated by applying L3 filtering [TS 38.331 Section 5.5.3.2] to the L1 cell quality measurement, which may be obtained by performing beam combining / selection [TS 38.300 Section 9.2.4 Node B], i.e., averaging the N strongest L1 beam measurements above a threshold T. 3GPP TS 38.300 Section 9.2.4 states:

[0115] “…in RRC_CONNECTED, the UE measures multiple beams (at least one) of a cell and the measurements (power values) are averaged to derive the cell quality. When doing so, the UE is configured to consider a subset of the detected beams. Filtering occurs at two different levels: at the physical layer to derive the beam quality and then at the RRC level to derive the cell quality from the multiple beams. The cell quality derived from the beam measurements is derived in the same way for serving cell(s) and non-serving cell(s). If the UE is configured to do so by the gNB, the measurement report may contain measurements of the X best beams…”

[0116] In the advanced measurement model, measurements of specific gNB beam samples may be provided to the physical L1 filtering. The execution of measurements in the physical layer may not be defined in the standard. The L1 filtering may be UE implementation specific. The L1 filtering may report beam specific measurements to the beam combining / selection module / function, and to the L3 beam filtering.

[0117] The beam combining / selection module / function may be standardized and configured via RRC signaling, and measurements may be combined to determine the quality of a cell. Cell quality may be reported to L3 filtering, which may be standardized and configured via RRC signaling. The filtering results may be reported within a measurement period for evaluating reporting criteria, which may be standardized and configured via RRC signaling. The evaluation of reporting criteria may be standardized and configured via RRC signaling. Whether new measurement results are received may be evaluated. The evaluation results (e.g., measurement report information / messages) may be sent over the radio interface.

[0118] L3 beam filtering may be performed on beam-specific measurements output by L1 filtering. L3 beam filtering may be standardized and configured through RRC signaling. The output of L3 beam filtering may be beam-specific measurements and may be reported within a reporting period equal to the input measurement period. The output of L3 beam filtering may be input to a module / function for beam selection for reporting. The module / function for beam selection for reporting may select one or more beam measurements to be provided, for example in a measurement report sent over the radio interface. The module / function for beam selection for reporting may be standardized and configured through RRC signaling.

[0119] Regarding L3 filtering of cell quality, 3GPP TS 38.331, 5.5.3.2 specifies the following requirements for UE:

[0120] “…UE shall:

[0121] 1> For each cell measurement quality, each beam measurement quality, each sidelink measurement quality required in subclause 5.8.10, and the UE performs according to 5.5.3.1

[0122] Measured quality of each CLI measurement:

[0123] 2> Before being used in the evaluation report standard or in the measurement report, filter by the following formula

[0124] Wave measurement results:

[0125] Fn=(1-a)*Fn-1+a*Mn

[0126] Where Mn is the latest measurement result received from the physical layer;

[0127] Fn is the updated filtered measurement result, which is used to evaluate the reporting criteria or to

[0128] In measurement reports;

[0129] Fn-1 is the old filtered measurement result, where F0 is set to M1 when the first measurement result from the physical layer is received; for MeasObjectNR, a=1 / 2(ki / 4), where ki is the filterCoefficient of the corresponding measurement quality of the i-th QuantityConfigNR in quantityConfigNR-List, i is indicated by quantityConfigIndex in MeasObjectNR; for other measurements, a=1 / 2(k / 4), where k is the filterCoefficient of the corresponding measurement quality received by quantityConfig;

[0130] For UTRA-FDD, a=1 / 2(k / 4), where k is the filterCoefficient of the corresponding measurement quality received by quantityConfigUTRA-FDD in QuantityConfig;

[0131] 2> Adapt the filtering so that the temporal characteristics of the filtering remain constant at different input rates. Observe that filterCoefficient k assumes a sampling rate equal to X ms; assuming non-DRX operation, the value of X is equivalent to an intra-frequency L1 measurement period defined in TS 38.133

[14] and depends on the frequency range..."

[0132] The measurement configuration provided by the network to the UE may contain a measurement object which may include the configuration of filter coefficients used to derive L3 cell quality and beam measurements (see QuantityConfigNR [TS 38.331]). Figure 3 , which illustrates an example of a QuantityConfig information element. QuantityConfigNR (310) may be included in the QuantityConfig information element. Different filter coefficients may be configured for reference signal received power (RSRP), reference signal received quality (RSRQ), and reference signal (RS) signal-to-interference-noise ratio (RS-SINR) and RS types (e.g., synchronization signal block (SSB) and channel state information reference signal (CSI-RS)).

[0133] Example embodiments of the present disclosure may involve filtering of L1 beam-specific measurements reported to the MAC layer of a serving DU as part of L1 / 2 inter-cell mobility.

[0134] Reference now Figure 2, the DU (210) may decide that LLM is applicable to the UE (205) based at least in part on L1 beam measurements reported by the UE (205) to the network (270). Given that L1 beam measurements follow more channel variations than L3 measurements (i.e., L3 filtering introduces latency to L3 measurements), the network (e.g., 210) may react more quickly to serving cell signal strength degradation by switching the UE (205) to another cell (e.g., 220). This may ensure that the UE (205) is served with the best radio link. However, this comes at the expense of an increased number of ping-pongs between cells (i.e., switching back and forth due to rapid reaction to temporal variations in L1 measurements), which may have one or more of the following disadvantages in intra-CU inter-DU scenarios.

[0135] A disadvantage in the intra-CU inter-DU scenario may be increased signaling overhead, given that the target cell is controlled by a different DU than the DU serving the UE. For example, the source DU (210) may need to communicate with the target DU (220) (via the CU (215)) before / after the cell switch (280). For example, the target DU (210) may need to know the RS that will be used as a quasi-collocated (QCL) source for sending a physical downlink control channel (PDCCH) to the UE in the absence of a RACH switch, and the path may need to be switched from the source cell to the new target cell, etc.

[0136] In case of inter-DU LLM, one disadvantage may be that the RLC / MAC may need to be re-established / reset and PDCP recovery should be enabled to retransmit PDCP SDUs that have not been acknowledged by the UE. Therefore, a large amount of inter-DU ping-pong may increase the retransmission delay of pending packets. This is not necessary for intra-frame DUs where the same DU may control the same RLC / MAC.

[0137] Based on these potential disadvantages, additional filtering may be applied to the L1 beam measurement of the UE to reduce the number of ping-pongs. The cost of ping-pong in the inter-DU case may be higher than that in the intra-DU case in terms of signaling overhead and retransmission delay of pending packets. The technical effect of the example embodiments of the present disclosure may be to clarify how to apply additional filtering to the L1 beam measurement. The technical effect of the example embodiments of the present disclosure may be to achieve optimal LLM performance in both the intra-DU and inter-DU cases.

[0138] In an example embodiment, the network may let the UE know whether the prepared candidate target cell belongs to the same DU as the source cell or to a different DU.Example embodiments of the present disclosure may be independent of filtering enhancement for L1 beam measurement for LLM.

[0139] In an example embodiment, different filtering configurations for L1 beam measurement may be applied to prepared target cells of different groups. In an example embodiment, different filtering configurations may be applied to prepared target cells controlled by the same DU and different DUs. For example, a first filtering configuration may be applied to group #1: prepared target cells within a DU (i.e., prepared target cells controlled by the same DU as the DU of the UE's serving cell), while a second filtering configuration may be applied to group #2: prepared target cells between DUs (i.e., prepared target cells controlled by a different DU than the DU of the UE's serving cell).

[0140] In an example embodiment, a filtering configuration (e.g., a third filtering configuration) may be applied to a specific prepared target cell, which may belong to the same DU as the DU of the serving cell of the UE, or to a different DU (i.e., the group may contain one specific prepared target cell). There may be one or more such specific prepared target cells; each may be configured with a separate filtering configuration.

[0141] Three main alternative example embodiments are described in this disclosure. In the first alternative, filtering can be performed by the UE. In the second alternative, filtering can be performed by the network (e.g., the serving cell triggers LLM). In the third alternative, filtering can be performed by both the UE and the network.

[0142] In an example embodiment according to the first alternative, the UE may apply additional filtering to the L1 beam measurement before reporting it to the network (e.g., a serving cell). In an example embodiment, the UE may be configured by the network to have different filtering configuration parameters applicable to different groups of cells (i.e., prepared target cells controlled by the same DU or different DUs). In an example embodiment, the UE may select and apply filtering configurations for prepared target cells based on whether the serving cell and the target cell are controlled by the same DU or different DUs. For example, the UE may select a first filtering configuration to apply to the L1 beam measurement of a first prepared target cell, select a second filtering configuration to apply to the L1 beam measurement of a different second prepared target cell, and so on. In an example embodiment, the filtering configuration parameters for multiple groups of cells may be received from the network via an RRC reconfiguration message.

[0143] In an example embodiment according to the second alternative, the network (e.g., a serving cell) may apply additional filtering to the L1 beam measurements received from the UE. In an example embodiment, a serving cell (DU) may apply different filtering configuration parameters to different cell groups (i.e., target cells controlled by the same DU or different DUs). That is, the serving cell may select and apply filtering configurations for prepared target cells depending on whether the serving cell and the target cell are controlled by the same DU or different DUs. In an example embodiment, the filtering configuration for the target cell may be received by the DU from the CU or from an operation, administration, and maintenance (OAM) function.

[0144] In an example embodiment according to the third alternative, joint / hybrid filtering may be performed, where both the UE and the network (e.g., serving cell) may apply filtering. For example, the UE may first apply filtering to the L1 beam measurement of each configured cell and report the result to the network, and then the network may apply additional filtering to the result received from the UE. For example, the UE may apply filtering to the L1 beam measurement of each configured cell to generate a first filtered average measurement result and report it to the network, and then the network may apply additional filtering to the filtered L1 beam measurement received from the UE (i.e., the L1 beam measurement that has been filtered by the UE) using time domain averaging (e.g., a moving average using a filter coefficient) to obtain the final filtered measurement result. The filtering configurations applied by the UE and the DU may be at least partially different.

[0145] In an example embodiment according to the third alternative, the UE may receive a filtering configuration from the CU via an RRC reconfiguration message. In an example embodiment, the filtering configuration applied by the UE may be determined by the CU or the serving DU. If the filtering configuration applied by the UE is selected by the serving DU, the serving DU may indicate the selection to the CU, which may transmit the selection to the UE via an RRC reconfiguration message.

[0146] In an example embodiment according to the third alternative, the UE may be configured by the network with filtering configuration parameters to generate filtered measurements of one or more prepared target cells. Different filtering configurations may be given for different cell groups (i.e., prepared target cells controlled by the same DU or different DUs). In another example embodiment, the same filtering configuration(s) may be given for all types of cells. In other words, the UE may receive only a single filtering configuration and apply that single filtering configuration. The DU may optionally apply additional filtering to distinguish between different cell groups.

[0147] In an example embodiment according to the third alternative, the UE may select and apply a filtering configuration for a prepared target cell, and generate filtered measurements for each configured cell, depending on whether the serving cell and the target cell are controlled by the same DU or different DUs. In the case of the same filtering configuration, the UE may apply the same filtering to the measurement results of any prepared target cell, regardless of whether the cell belongs to the same or different DU of the UE's serving cell. In an example embodiment, the serving cell may apply additional filtering to the filtered measurement results for the prepared target cell received from the UE. Different filtering configurations may be applied to the prepared target cell, depending on whether the serving cell and the target cell are controlled by the same DU or different DUs.

[0148] In an example embodiment according to the first alternative, the second alternative, or the third alternative, the filtering configuration parameters may include at least one of the following parameters: parameters for performing time domain averaging, such as a filtering coefficient (e.g., k); a forgetting factor (a=1 / 2(k / 4)); and / or the number of L1 measurements that should be averaged within a time window, etc. In an example embodiment, the filtering configuration parameters may be different for different measurement qualities (L1-RSRP or L1-SINR) and / or reference signal (RS) types: SSB or CSI-RS. In an example embodiment, different filtering configurations may be used for the same cell at the same time (i.e., the serving cell measurement may be filtered using two different filtering configurations that may be defined for two different groups). This may require ensuring that the UE or network compares the measurement of the serving cell with the measurement of the target cell using the same filtering configuration. For example, assuming there are four prepared target cells 1, 2, 3, and 4, they may be split into two groups: Group 1={1,2} and Group 2={3,4}. The cells of Group 1 may be controlled by the same DU of the serving cell, and the cells of Group 2 may be controlled by different DUs. In this case, the UE may use filtering configuration #1 to filter the serving cell measurements and the measurements of target cells 1, 2, and the UE may use filtering configuration #2 to filter the serving cell measurements and the measurements of target cells 3, 4. The serving cell and the target cell may need to be filtered by the same configuration because the network may need to compare them to each other, otherwise the comparison may be unfair / inappropriate / biased, etc.

[0149] Reference now Figure 4 , which illustrates a signaling diagram for L1 / 2 inter-cell mobility according to the first alternative. Figure 4 The part is similar to Figure 2 of the specification and are therefore labeled in the same manner; overlapping descriptions are not included.

[0150] At 460, the UE (205) may receive at least two different filtering configurations #1 and #2 from the CU (215), which may be applied to the intra-DU and inter-DU LLMs, respectively. That is, if the serving cell is controlled by the same DU (410) as the DU of the target cell 1, the UE may apply configuration #1 to the target cell 1. Similarly, if the target cell is controlled by a different DU than the DU of the serving cell, the UE may apply configuration #2 to the target cell 2. At 465, the UE (205) may send an RRC reconfiguration complete message to the CU (215).

[0151] At 470, the UE (205) may identify that the target cell is controlled by the same DU or a different DU. Figure 4 , DU1 (410) is illustrated as controlling target cell 1, and DU2 (420) is illustrated as controlling target cell 2. However, Figure 4 The scenario shown in is not limiting; DU1 (410) and DU2 (420) may control the same target cell 1. At 475, the UE (205) may apply different filtering configurations depending on whether the target cell is controlled by the same or a different DU than the serving cell. Figure 4 In the example of , based on a determination that the target cell (420) is controlled by a DU different from the DU of the serving cell (410), the UE (205) may apply configuration #2.

[0152] In order to make a fair comparison between the filtered serving cell measurement and the target cell measurement (i.e., to determine whether the filtered target cell measurement is greater than the source cell measurement where the measurement was processed using the same filtering parameters), the UE may apply both filtering configurations to the serving cell measurement before sending a measurement report to the network or evaluating any other conditions related to measurement reporting or handover.

[0153] In an example embodiment, the UE (205) may send a UE capability indication to the CU (215) indicating whether the UE (205) can support processing two different filtering configurations depending on whether the target cell is controlled by the same DU or a different DU. Figure 4 , but it may be included as part of the measurement report (225), or may be sent to the CU (215) before the CU (215) sends the RRC reconfiguration (460) to the UE (205). In an example embodiment, such as according to an example embodiment of the present disclosure, the UE (205) may receive an RRC reconfiguration message (460) including two or more filtering configurations only when both the UE (205) and the serving DU (410) support multiple filtering configurations.

[0154] In another example embodiment, the two filtering configurations (460) may be provided by the serving DU (410) as part of a UE context modification response (240), which in turn may be sent to the UE (205) at 460 via the CU (215) generating an RRC reconfiguration message (i.e., including the provided filtering configurations).

[0155] Reference now Figure 5 , illustrates a signaling diagram for L1 / 2 inter-cell mobility according to the second alternative. Figure 5 The part is similar to Figure 2 of the specification and are therefore labeled in the same manner; overlapping descriptions are not included.

[0156] At 560, the serving DU (510) may receive at least two different filtering configurations #1 and #2, which may be applied to intra-DU and inter-DU LLM, respectively. That is, if the serving cell is controlled by the same DU as the DU of the target cell 1, the serving DU may apply configuration #1 to the target cell 1. Similarly, if the target cell is controlled by a different DU than the DU of the serving cell, the serving DU may apply configuration #2 to the target cell 2.

[0157] exist Figure 5 , DU1 (510) is illustrated as controlling target cell 1, and DU2 (520) is illustrated as controlling target cell 2. However, Figure 5 The scenario shown is not limiting; DU1 (510) and DU2 (520) may control the same target cell 1. At 575, the UE (205) may send an L1 measurement report to DU1 (510).

[0158] At 575, the serving DU (510) may apply different filtering configurations depending on whether the target cell is controlled by the same DU as the serving cell's DU or a different DU. For example, the serving DU (510) may determine whether the target cell is controlled by the same DU as the serving cell's DU or a different DU.

[0159] In order to make a fair comparison between the filtered serving cell measurement and the target cell measurement (i.e., to determine whether the filtered target cell measurement is greater than the source cell measurement where the measurement was processed using the same filtering parameters), the serving DU may apply two filtering configurations to the serving cell measurement (i.e., applied to the same measurement quality received from the UE (205)).

[0160] In an example embodiment, the filtering configuration (560) may be provided to the serving DU (510) during establishment of the F1 interface between the CU (215) and the DU (510) (ie, in an F1 Setup Request message from the CU to the DU).

[0161] In an example embodiment, the DU (510) may indicate to the CU (215) whether it cannot support processing two different filter configurations depending on whether the target cell is controlled by the same DU or a different DU. That is, if the DU cannot support processing two different filter configurations sent by the CU (215) to the DU (510), for example at 560, the DU (510) may notify the CU (215). In an example embodiment, the operator may ensure that the CU (215) and the DU (510) match from a capability perspective.

[0162] A third alternative could be based on Figure 4 and Figure 5 The L1 beam measurement may be first filtered by the UE based on a given filtering configuration and then additionally filtered by the network (i.e., the serving cell). A person of ordinary skill in the art will appreciate that Figure 4 One, some, or all of the steps may be combined with Figure 5 The steps shown occur in conjunction, and the steps may or may not be performed concurrently with each other.

[0163] A technical effect of example embodiments of the present disclosure may be enabling more reliable inter-DU LLM switching compared to other options where ping-pong costs more than intra-DU LLM. A technical effect of example embodiments of the present disclosure may be quickly triggering switching in intra-DU situations where ping-pong is not so critical.

[0164] Figure 6 Potential steps of an example method 600 are illustrated. The example method 600 may include: receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit (610); selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether the serving cell and the at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the first distributed unit (620); and performing filtering on a plurality of layer one measurements associated with the at least one target cell using the selected configuration (630). The example method 600 may conform to the first alternative. The example method 600 may be performed, for example, using a UE.

[0165] Figure 7Potential steps of an example method 700 are illustrated. The example method 700 may include: sending two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit (710); and receiving a radio resource control reconfiguration complete message from the user equipment in response to the two or more filtering configurations (720). The example method 700 may conform to the first alternative. The example method 700 may be performed, for example, using a CU.

[0166] Figure 8 Potential steps of an example method 800 are illustrated. The example method 800 may include: receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the apparatus, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the apparatus (810); selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and the at least one target cell are controlled by the same distributed unit, wherein the serving cell is controlled by the apparatus (820); receiving a layer one measurement report from a user equipment, wherein the layer one measurement report includes a plurality of layer one measurements associated with the at least one target cell (830); and performing filtering on the plurality of layer one measurements using the selected configuration (840). The example method 800 may conform to alternative 2. The example method 800 may be performed, for example, using a DU.

[0167] Fig. 9 Potential steps of an example method 900 are illustrated. Example method 900 may include: determining two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit (910); and sending the two or more filtering configurations to the first distributed unit (920). Example method 900 may conform to alternative 2. Example method 900 may be performed, for example, using a CU.

[0168] Fig.10Potential steps of an example method 1000 are illustrated. Example method 1000 may include: causing at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment is served via a serving cell of a first distributed unit (1010); and sending two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit is different from the first distributed unit (1020). Example method 1000 may conform to alternative 3. For example, example method 1000 may be performed using a CU.

[0169] According to an example 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 two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; select a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the first distributed unit; and perform filtering on multiple layer one measurements associated with the at least one target cell using the selected configuration.

[0170] The two or more filtering configurations may be received from the centralized unit via a radio resource control reconfiguration message.

[0171] The two or more filtering configurations may include at least one filtering configuration selected by the first distributed unit.

[0172] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0173] Selecting a configuration may include the example apparatus being configured to select a plurality of configurations for a serving cell.

[0174] The example apparatus may also be configured to: send a layer one measurement report to the first distributed unit, wherein the layer one measurement report may include at least: filtered results of multiple layer one measurements.

[0175] The example apparatus may be further configured to send an indication to the centralized unit of whether the apparatus supports two or more filtering configurations.

[0176] According to one aspect, an example method may be provided, the example method comprising: receiving two or more filtering configurations using a user device, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by a first distributed unit; and performing filtering on multiple layer one measurements associated with at least one target cell using the selected configuration.

[0177] The two or more filtering configurations may be received from the centralized unit via a radio resource control reconfiguration message.

[0178] The two or more filtering configurations may include at least one filtering configuration selected by the first distributed unit.

[0179] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0180] Selecting a configuration may include selecting a plurality of configurations for the serving cell.

[0181] The example method may also include: sending a layer one measurement report to the first distributed unit, wherein the layer one measurement report may include at least: filtered results of the plurality of layer one measurements.

[0182] The example method may also include sending an indication to the centralized unit whether the user equipment supports two or more filtering configurations.

[0183] According to an example embodiment, an apparatus may include: a circuit system configured to perform receiving two or more filtering configurations using a user device, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; a circuit system configured to perform selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by a first distributed unit; and a circuit system configured to perform filtering on multiple layer-one measurements associated with at least one target cell using the selected configuration.

[0184] 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 two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; select a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the first distributed unit; and perform filtering on multiple layer one measurements associated with the at least one target cell using the selected configuration.

[0185] 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 circuitry with 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 circuitry and / or processor(s), such as microprocessor(s) or portions of microprocessor(s) that require software (e.g., firmware) to operate, but may not be present when software is not required for operation. 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.

[0186] According to an example embodiment, an apparatus may include components for performing the following: receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the first distributed unit; and performing filtering on multiple layer one measurements associated with at least one target cell using the selected configuration.

[0187] The two or more filtering configurations may be received from the centralized unit via a radio resource control reconfiguration message.

[0188] The two or more filtering configurations may include at least one filtering configuration selected by the first distributed unit.

[0189] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0190] The means configured to perform selection of a configuration may include means configured to perform selection of a plurality of configurations for a serving cell.

[0191] The component may also be configured to execute: sending a layer one measurement report to the first distributed unit, wherein the layer one measurement report may at least include: filtering results of multiple layer one measurements.

[0192] The component may also be configured to perform: sending an indication to the centralized unit whether the user equipment supports two or more filtering configurations.

[0193] A processor, memory, and / or example algorithms (which may be encoded as instructions, programs, or codes) may be provided as example means for providing or causing operations to be performed.

[0194] 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 two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; select a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell can be controlled by the first distributed unit; and use the selected configuration to perform filtering on multiple layer one measurements associated with the at least one target cell.

[0195] According to an example embodiment, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: causing two or more filtering configurations to be received, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell can be controlled by the first distributed unit; and performing filtering on multiple layer one measurements associated with at least one target cell using the selected configuration.

[0196] According to another example embodiment, a machine-readable, non-volatile program storage device may be provided, the non-volatile program storage device tangibly embodying machine-executable instructions for performing operations, the operations comprising: causing two or more filtering configurations to be received, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by a first distributed unit; and performing filtering on multiple layer one measurements associated with at least one target cell using the selected configuration.

[0197] According to another example embodiment, a non-transitory computer-readable medium includes instructions that, when executed by an apparatus, cause the apparatus to perform at least the following items: cause two or more filtering configurations to be received, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; select a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by a first distributed unit; and use the selected configuration to perform filtering on multiple layer one measurements associated with at least one target cell.

[0198] A computer-implemented system includes: at least one processor and at least one non-volatile memory storing instructions, which instructions, when executed by the at least one processor, cause the system to at least perform: receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell can be controlled by the first distributed unit; and using the selected configuration to perform filtering on multiple layer one measurements associated with at least one target cell.

[0199] A computer-implemented system includes: a component for receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; a component for selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell can be controlled by the first distributed unit; and a component for performing filtering on multiple layer one measurements associated with at least one target cell using the selected configuration.

[0200] According to an example 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 two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and receive a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0201] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0202] The example apparatus may also be configured to receive an indication of whether the user equipment supports two or more filtering configurations.

[0203] The example apparatus may also be configured to receive two or more filtering configurations from the first distributed unit.

[0204] According to one aspect, an example method may be provided, the example method comprising: sending two or more filtering configurations to a user equipment using a centralized unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and receiving a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0205] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0206] The example method may also include receiving an indication of whether the user equipment supports two or more filtering configurations.

[0207] The example method may also include receiving two or more filtering configurations from the first distributed unit.

[0208] According to an example embodiment, an apparatus may include: a circuit system configured to execute sending two or more filtering configurations to a user equipment using a centralized unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and a circuit system configured to execute receiving a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0209] 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: send two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and receive a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0210] According to an example embodiment, an apparatus may include components for performing the following items: sending two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and receiving a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0211] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0212] The component may also be configured to perform: receiving an indication of whether the user equipment supports two or more filtering configurations.

[0213] The component may also be configured to perform: receiving two or more filtering configurations from the first distributed unit.

[0214] 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: cause two or more filtering configurations to be sent to a user equipment, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and cause a radio resource control reconfiguration completion message to be received from the user equipment in response to the two or more filtering configurations.

[0215] According to an example embodiment, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: causing two or more filtering configurations to be sent to a user equipment, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and causing a radio resource control reconfiguration completion message to be received from the user equipment in response to the two or more filtering configurations.

[0216] According to another example embodiment, a machine-readable non-volatile program storage device may be provided, the non-volatile program storage device tangibly embodying machine-executable instructions for performing operations, the operations comprising: causing two or more filtering configurations to be sent to a user device, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and causing a radio resource control reconfiguration completion message to be received from the user device in response to the two or more filtering configurations.

[0217] According to another example embodiment, a non-transitory computer-readable medium includes instructions that, when executed by an apparatus, cause the apparatus to perform at least the following items: cause two or more filtering configurations to be sent to a user equipment, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and cause a radio resource control reconfiguration completion message to be received from the user equipment in response to the two or more filtering configurations.

[0218] A computer-implemented system includes: at least one processor and at least one non-volatile memory storing instructions, which instructions, when executed by the at least one processor, cause the system to at least perform: causing two or more filtering configurations to be sent to a user equipment, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and causing a radio resource control reconfiguration completion message to be received from the user equipment in response to the two or more filtering configurations.

[0219] A computer-implemented system includes: a component for sending two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and a component for receiving a radio resource control reconfiguration completion message from the user equipment in response to the two or more filtering configurations.

[0220] According to an example embodiment, an apparatus may include: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, cause the apparatus to at least: receive two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the apparatus, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the apparatus; select a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the apparatus; receive a layer one measurement report from a user equipment, wherein the layer one measurement report may include multiple layer one measurements associated with the at least one target cell; and perform filtering on the multiple layer one measurements using the selected configuration.

[0221] The two or more filtering configurations may be received from one of: a centralized unit, or an operations, administration, and maintenance function.

[0222] Two or more filtering configurations may be received during establishment of the interface between the device and the centralized unit.

[0223] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0224] Selecting a configuration may include the example apparatus being further configured to select a plurality of configurations for the serving cell.

[0225] The example apparatus may also be configured to send a handover command to the user equipment based on the filtered results of the plurality of layer one measurements.

[0226] The example apparatus may be further configured to send an indication to the centralized unit of whether the apparatus supports two or more filtering configurations.

[0227] According to one aspect, an example method may be provided, the example method comprising: receiving two or more filtering configurations using a distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the distributed unit; selecting a configuration from the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the distributed unit; receiving a layer one measurement report from a user device, wherein the layer one measurement report may include multiple layer one measurements associated with at least one target cell; and performing filtering on the multiple layer one measurements using the selected configuration.

[0228] The two or more filtering configurations may be received from one of: a centralized unit, or an operations, administration, and maintenance function.

[0229] Two or more filtering configurations may be received during establishment of an interface between the distributed unit and the centralized unit.

[0230] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0231] Selecting a configuration may include selecting a plurality of configurations for the serving cell.

[0232] The example method may also include sending a handover command to the user equipment based on a result of filtering the plurality of layer one measurements.

[0233] The example method may also include sending an indication to the centralized unit whether the distributed unit supports two or more filtering configurations.

[0234] According to an example embodiment, an apparatus may include: a circuit system configured to execute receiving two or more filtering configurations using a distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the distributed unit; a circuit system configured to execute selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the distributed unit; a circuit system configured to execute receiving a layer one measurement report from a user device, wherein the layer one measurement report may include multiple layer one measurements associated with at least one target cell; and a circuit system configured to execute filtering of the multiple layer one measurements using the selected configuration.

[0235] According to an example embodiment, an apparatus 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 apparatus to: receive two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the apparatus, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the apparatus; select a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the apparatus; receive a layer one measurement report from a user equipment, wherein the layer one measurement report may include multiple layer one measurements associated with the at least one target cell; and perform filtering on the multiple layer one measurements using the selected configuration.

[0236] According to an example embodiment, an apparatus may include components for performing the following items: receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the apparatus, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the apparatus; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the apparatus; receiving a layer one measurement report from a user equipment, wherein the layer one measurement report may include multiple layer one measurements associated with at least one target cell; and performing filtering on the multiple layer one measurements using the selected configuration.

[0237] The two or more filtering configurations may be received from one of: a centralized unit, or an operations, administration, and maintenance function.

[0238] Two or more filtering configurations may be received during establishment of an interface between the distributed unit and the centralized unit.

[0239] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0240] The means configured to perform selection of a configuration may include means configured to perform selection of a plurality of configurations for a serving cell.

[0241] The component may also be configured to perform: sending a handover command to the user equipment based on the filtered results of the plurality of layer one measurements.

[0242] The component may also be configured to perform: sending an indication to the centralized unit whether the distributed unit supports two or more filtering configurations.

[0243] 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: cause two or more filtering configurations to be received using a distributed unit, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit can be different from the distributed unit; select a configuration from the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell can be controlled by the distributed unit; cause a layer one measurement report to be received from a user device, wherein the layer one measurement report can include multiple layer one measurements associated with at least one target cell; and perform filtering on the multiple layer one measurements using the selected configuration.

[0244] According to an example embodiment, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: causing two or more filtering configurations to be received using a distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the distributed unit; selecting a configuration from the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the distributed unit; causing a layer one measurement report to be received from a user device, wherein the layer one measurement report may include multiple layer one measurements associated with at least one target cell; and performing filtering on the multiple layer one measurements using the selected configuration.

[0245] According to another example embodiment, a machine-readable, non-volatile program storage device may be provided, the non-volatile program storage device tangibly embodying machine-executable instructions for performing operations, the operations comprising: causing two or more filtering configurations to be received using a distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein at least one second distributed unit may be different from the distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the distributed unit; causing a layer one measurement report to be received from a user device, wherein the layer one measurement report may include multiple layer one measurements associated with at least one target cell; and performing filtering on the multiple layer one measurements using the selected configuration.

[0246] According to another example embodiment, a non-transitory computer-readable medium includes instructions that, when executed by an apparatus, cause the apparatus to perform at least the following items: cause two or more filtering configurations to be received using a distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein at least one second distributed unit may be different from the distributed unit; select a configuration from the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell may be controlled by the distributed unit; cause a layer one measurement report to be received from a user equipment, wherein the layer one measurement report may include multiple layer one measurements associated with at least one target cell; and perform filtering on multiple layer one measurements using the selected configuration.

[0247] A computer-implemented system includes: at least one processor and at least one non-volatile memory storing instructions, which instructions, when executed by the at least one processor, cause the system to at least perform: causing two or more filtering configurations to be received using a distributed unit, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein at least one second distributed unit can be different from the distributed unit; selecting a configuration from the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell can be controlled by the distributed unit; causing a layer one measurement report to be received from a user device, wherein the layer one measurement report can include multiple layer one measurements associated with at least one target cell; and performing filtering on multiple layer one measurements using the selected configuration.

[0248] A computer-implemented system includes: a component for receiving two or more filtering configurations using a distributed unit, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with the distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit can be different from the distributed unit; a component for selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and at least one target cell are controlled by the same distributed unit, wherein the serving cell can be controlled by the distributed unit; a component for receiving a layer one measurement report from a user device, wherein the layer one measurement report can include multiple layer one measurements associated with at least one target cell; and a component for performing filtering on multiple layer one measurements using the selected configuration.

[0249] According to an example 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: determine two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and send the two or more filtering configurations to the first distributed unit.

[0250] The example apparatus may also be configured to: send a radio resource control reconfiguration message to a user equipment using a serving cell controlled by the first distributed unit; and receive a radio resource control reconfiguration complete message from the user equipment.

[0251] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0252] The example apparatus may be further configured to receive an indication of whether the first distributed unit supports two or more filtering configurations.

[0253] According to one aspect, an example method may be provided, the example method comprising: determining two or more filtering configurations using a centralized unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and sending the two or more filtering configurations to the first distributed unit.

[0254] The example method may also include: sending a radio resource control reconfiguration message to a user equipment using a serving cell controlled by the first distributed unit; and receiving a radio resource control reconfiguration complete message from the user equipment.

[0255] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0256] The example method may also include receiving an indication of whether the first distributed unit supports two or more filtering configurations.

[0257] According to an example embodiment, an apparatus may include: a circuit system configured to perform determination of two or more filtering configurations using a centralized unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and a circuit system configured to perform sending the two or more filtering configurations to the first distributed unit.

[0258] 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: determine two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and send the two or more filtering configurations to the first distributed unit.

[0259] According to an example embodiment, an apparatus may include components for performing the following items: determining two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and sending the two or more filtering configurations to the first distributed unit.

[0260] The component may also be configured to perform: sending a radio resource control reconfiguration message to a user equipment using a serving cell controlled by the first distributed unit; and receiving a radio resource control reconfiguration complete message from the user equipment.

[0261] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0262] The component may also be configured to perform: receiving an indication of whether the first distributed unit supports two or more filtering configurations.

[0263] 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: determine two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and cause the two or more filtering configurations to be sent to the first distributed unit.

[0264] According to an example embodiment, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: determining two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and causing the two or more filtering configurations to be sent to the first distributed unit.

[0265] According to another example embodiment, a machine-readable non-volatile program storage device may be provided, the non-volatile program storage device tangibly embodying machine-executable instructions for performing operations, the operations comprising: determining two or more filtering configurations, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit may be different from the at least one second distributed unit; and causing the two or more filtering configurations to be sent to the first distributed unit.

[0266] According to another example embodiment, a non-transitory computer-readable medium includes instructions that, when executed by a device, cause the device to perform at least the following items: determine two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and cause the two or more filtering configurations to be sent to the first distributed unit.

[0267] A computer-implemented system includes: at least one processor and at least one non-volatile memory storing instructions, which instructions, when executed by the at least one processor, cause the system to at least perform: determine two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and cause the two or more filtering configurations to be sent to the first distributed unit.

[0268] A computer-implemented system includes: a component for determining two or more filtering configurations, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit can be different from the at least one second distributed unit; and a component for sending the two or more filtering configurations to the first distributed unit.

[0269] According to an example embodiment, an apparatus may include: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, cause the apparatus to at least: cause at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment may be served via a service cell of a first distributed unit; and send two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the first distributed unit.

[0270] A first distributed unit and at least one second distributed unit may be associated with the apparatus.

[0271] Causing transmission of at least one filtering configuration to the user equipment may include the example apparatus being configured to: send the at least one filtering configuration to the user equipment via a radio resource control reconfiguration message; or send the at least one filtering configuration to the first distributed unit for forwarding to the user equipment.

[0272] At least one filtering configuration can be configured to enable the user equipment to filter the layer one beam measurement of at least one target cell to generate at least one filtered average measurement result, wherein two or more filtering configurations can be configured to enable the first distributed unit to filter at least one filtered average measurement result.

[0273] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0274] According to one aspect, an example method may be provided, the example method comprising: using a centralized unit to transmit at least one filtering configuration to a user equipment, wherein the user equipment may be served via a service cell of a first distributed unit; and sending two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the first distributed unit.

[0275] The first distributed unit and at least one second distributed unit may be associated with the centralized unit.

[0276] Causing transmission of the at least one filtering configuration to the user equipment may include: sending the at least one filtering configuration to the user equipment via a radio resource control reconfiguration message; or sending the at least one filtering configuration to the first distributed unit for forwarding to the user equipment.

[0277] At least one filtering configuration can be configured to enable the user equipment to filter the layer one beam measurement of at least one target cell to generate at least one filtered average measurement result, wherein two or more filtering configurations can be configured to enable the first distributed unit to filter at least one filtered average measurement result.

[0278] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0279] According to an example embodiment, an apparatus may include: a circuit system configured to execute the use of a centralized unit to transmit at least one filtering configuration to a user equipment, wherein the user equipment may be served via a service cell of a first distributed unit; and a circuit system configured to execute the sending of two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the first distributed unit.

[0280] According to an example embodiment, an apparatus 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 apparatus to: enable at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment may be served via a service cell of a first distributed unit; and send two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the first distributed unit.

[0281] According to an example embodiment, an apparatus may include components for performing the following items: enabling at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment may be served via a service cell of a first distributed unit; and sending two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the first distributed unit.

[0282] The first distributed unit and at least one second distributed unit may be associated with the centralized unit.

[0283] The component configured to execute the transmission of at least one filtering configuration to the user equipment may include a component configured to execute the following items: sending at least one filtering configuration to the user equipment via a radio resource control reconfiguration message; or sending at least one filtering configuration to the first distributed unit to forward to the user equipment.

[0284] At least one filtering configuration can be configured to enable the user equipment to filter the layer one beam measurement of at least one target cell to generate at least one filtered average measurement result, wherein two or more filtering configurations can be configured to enable the first distributed unit to filter at least one filtered average measurement result.

[0285] Two or more filtering configurations may respectively include at least one filtering configuration parameter, wherein at least one filtering configuration parameter may include at least one of the following items: a parameter for performing time domain averaging, a filtering coefficient for performing time domain averaging, a forgetting factor for performing time domain averaging, the number of layer one measurements to be averaged within a time window, a parameter for layer one reference signal received power measurement, a parameter for layer one signal-to-interference-and-noise ratio measurement, a parameter for synchronization signal block measurement, or a parameter for channel state information reference signal measurement.

[0286] 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: cause at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment can be served via a service cell of a first distributed unit; and cause two or more filtering configurations to be sent to the first distributed unit, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit can be different from the first distributed unit.

[0287] According to an example embodiment, a non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following items: causing at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment can be served via a service cell of a first distributed unit; and causing two or more filtering configurations to be sent to the first distributed unit, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit can be different from the first distributed unit.

[0288] According to another example embodiment, a machine-readable non-volatile program storage device may be provided, the non-volatile program storage device tangibly embodying machine-executable instructions for performing operations, the operations comprising: causing at least one filtering configuration to be transmitted to a user device, wherein the user device may be served via a service cell of a first distributed unit; and causing two or more filtering configurations to be sent to the first distributed unit, wherein a first configuration of the two or more filtering configurations may be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations may be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit may be different from the first distributed unit.

[0289] According to another example embodiment, a non-transitory computer-readable medium includes instructions, which, when executed by an apparatus, cause the apparatus to perform at least the following items: cause at least one filtering configuration to be transmitted to a user equipment, wherein the user equipment can be served via a service cell of a first distributed unit; and cause two or more filtering configurations to be sent to the first distributed unit, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit can be different from the first distributed unit.

[0290] A computer-implemented system includes: at least one processor and at least one non-volatile memory storing instructions, and when the instructions are executed by the at least one processor, the system at least performs: transmitting at least one filtering configuration to a user equipment, wherein the user equipment can be served via a service cell of a first distributed unit; and sending two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit can be different from the first distributed unit.

[0291] A computer-implemented system includes: a component for transmitting at least one filtering configuration to a user equipment, wherein the user equipment can be served via a service cell of a first distributed unit; and a component for sending two or more filtering configurations to the first distributed unit, wherein a first configuration of the two or more filtering configurations can be associated with at least one first target cell associated with the first distributed unit, wherein a second configuration of the two or more filtering configurations can be associated with at least one second target cell associated with at least one second distributed unit, wherein the at least one second distributed unit can be different from the first distributed unit.

[0292] 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).

[0293] 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 non-transitory memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: receiving two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and the at least one target cell are controlled by a same distributed unit, wherein the serving cell is controlled by the first distributed unit; as well as Filtering is performed on a plurality of layer one measurements associated with the at least one target cell using the selected configuration. 2 . The apparatus of claim 1 , wherein the two or more filtering configurations are received from a centralized unit via a radio resource control reconfiguration message.

3. The apparatus of claim 1 or 2, wherein the two or more filtering configurations include: At least one filtering configuration is selected by the first distributed unit.

4. The apparatus according to any one of the preceding claims, wherein the two or more filtering configurations each comprise at least one filtering configuration parameter, wherein the at least one filtering configuration parameter comprises at least one of the following: Parameters used to perform time-domain averaging, The filter coefficients used to perform time-domain averaging, The forgetting factor used to perform time-domain averaging, the number of layer 1 measurements to be averaged within the time window, Parameters for layer 1 reference signal received power measurement, Parameters for layer 1 signal-to-interference-and-noise ratio measurement, Parameters for sync signal block measurements, or Parameters used for channel state information reference signal measurements.

5. The apparatus of any one of the preceding claims, wherein the at least one memory stores instructions which, when executed by the at least one processor, cause the apparatus to: Sending a layer one measurement report to the first distributed unit, wherein the layer one measurement report at least includes: The plurality of layers are measured as a result of the filtering.

6. The apparatus of any one of the preceding claims, wherein the at least one memory stores instructions which, when executed by the at least one processor, cause the apparatus to: An indication of whether the device supports the two or more filtering configurations is sent to a centralized unit.

7. A method comprising: receiving, using a user equipment, two or more filtering configurations, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; selecting a configuration of the two or more configurations for at least one target cell based at least in part on a determination of whether a serving cell and the at least one target cell are controlled by a same distributed unit, wherein the serving cell is controlled by the first distributed unit; as well as Filtering is performed on a plurality of layer one measurements associated with the at least one target cell using the selected configuration.

8. The method of claim 7, wherein the two or more filtering configurations are received from a centralized unit via a radio resource control reconfiguration message.

9. The method of claim 7 or 8, wherein the two or more filtering configurations include: At least one filtering configuration is selected by the first distributed unit.

10. The method according to any one of claims 7 to 9, wherein the two or more filtering configurations respectively include at least one filtering configuration parameter, wherein the at least one filtering configuration parameter includes at least one of the following items: Parameters used to perform time-domain averaging, The filter coefficients used to perform time-domain averaging, The forgetting factor used to perform time-domain averaging, the number of layer 1 measurements to be averaged within the time window, Parameters for layer 1 reference signal received power measurement, Parameters for layer 1 signal-to-interference-and-noise ratio measurement, Parameters for sync signal block measurements, or Parameters used for channel state information reference signal measurements.

11. The method according to any one of claims 7 to 10, further comprising: A layer one measurement report is sent to the first distributed unit, wherein the layer one measurement report at least includes: results of the filtering of the multiple layer one measurements.

12. The method according to any one of claims 7 to 11, further comprising: An indication of whether the user equipment supports the two or more filtering configurations is sent to a centralized unit.

13. An apparatus comprising: at least one processor; as well as at least one non-transitory memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: sending two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and In response to the two or more filtering configurations, a radio resource control reconfiguration complete message is received from the user equipment.

14. The apparatus according to claim 13, wherein the two or more filtering configurations respectively include at least one filtering configuration parameter, wherein the at least one filtering configuration parameter includes at least one of the following items: Parameters used to perform time-domain averaging, The filter coefficients used to perform time-domain averaging, The forgetting factor used to perform time-domain averaging, the number of layer 1 measurements to be averaged within the time window, Parameters for layer 1 reference signal received power measurement, Parameters for layer 1 signal-to-interference-and-noise ratio measurement, Parameters for sync signal block measurements, or Parameters used for channel state information reference signal measurements.

15. The apparatus according to claim 13 or 14, wherein the at least one memory stores the instructions, which when executed by the at least one processor, cause the apparatus to: An indication is received whether the user equipment supports the two or more filtering configurations.

16. The apparatus according to any one of claims 13 to 15, wherein the at least one memory stores the instructions, which when executed by the at least one processor, cause the apparatus to: The two or more filtering configurations are received from the first distributed unit.

17. A method comprising: sending, using a centralized unit, two or more filtering configurations to a user equipment, wherein a first configuration of the two or more filtering configurations is associated with at least one first target cell associated with a first distributed unit, wherein a second configuration of the two or more filtering configurations is associated with at least one second target cell associated with at least one second distributed unit, wherein the first distributed unit is different from the at least one second distributed unit; and In response to the two or more filtering configurations, a radio resource control reconfiguration complete message is received from the user equipment.

18. The method according to claim 17, wherein the two or more filtering configurations respectively include at least one filtering configuration parameter, wherein the at least one filtering configuration parameter includes at least one of the following items: Parameters used to perform time-domain averaging, The filter coefficients used to perform time-domain averaging, The forgetting factor used to perform time-domain averaging, the number of layer 1 measurements to be averaged within the time window, Parameters for layer 1 reference signal received power measurement, Parameters for layer 1 signal-to-interference-and-noise ratio measurement, Parameters for sync signal block measurements, or Parameters used for channel state information reference signal measurements.

19. The method according to claim 17 or 18, further comprising: An indication is received whether the user equipment supports the two or more filtering configurations.

20. The method according to any one of claims 17 to 19, further comprising: The two or more filtering configurations are received from the first distributed unit.

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