Network information exchange for cross-link interference management with intelligent reflecting surfaces

Abstract

Example aspects include a method, apparatus, and computer readable medium for managing cross-link interference (CLI) by a first network node of a wireless communication network, comprising: generating a reflection coefficient measurement configuration for an intelligent reflecting surface (IRS) controlled by the first network node to mitigate CLI caused by a first user equipment (UE) controlled by the first network node to a second UE controlled by a second network node. Aspects further include transmitting network information comprising the reflection coefficient measurement configuration. Additionally, aspects further include receiving, in response to transmitting the network information, CLI measurement information associated with the second UE. Additionally, aspects further include identifying a particular reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration. Additionally, aspects further include configuring the IRS with the particular reflection coefficient.

Description

Background Technology Technical Field

[0001] The aspects described generally relate to wireless communication systems, and more specifically to apparatus and methods for exchanging network information for managing cross-link interference (CLI) using intelligent reflective surfaces (IRS).

[0002] introduction

[0003] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable communication with multiple users by sharing available system resources. Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0004] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate at the city, country, region, and even global levels. An example telecommunications standard is 5G NR. 5G NR is part of the continuous evolution of mobile broadband, promulgated by the 3rd Generation Partnership Project (3GPP) to meet new requirements related to latency, reliability, security, scalability (e.g., with the Internet of Things (IoT),) and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology.

[0005] Specifically, a wireless communication device's wireless communication may be negatively affected by transmissions from neighboring wireless communication devices, such as cross-link interference. Improvements are presented in this paper. These improvements are also applicable to other multiple access technologies and telecommunications standards that employ them.

[0006] Overview

[0007] The following provides a brief overview of one or more aspects to offer a basic understanding of such aspects. This overview is not an exhaustive summary of all conceived aspects, and is neither intended to identify the key or decisive elements of all aspects nor to define the scope of any or all aspects.

[0008] Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that follows. This disclosure discloses methods, apparatus, and computer-readable media for wireless communication.

[0009] One example aspect includes a method for managing cross-link interference (CLI) by a first network node of a wireless communication network, comprising: generating a reflection coefficient measurement configuration for a smart reflective surface (IRS) controlled by the first network node to mitigate CLI caused by a first user equipment (UE) controlled by the first network node to a second UE controlled by a second network node. The method further comprises: transmitting network information including the reflection coefficient measurement configuration to the second network node and to the IRS. Additionally, the method further comprises: receiving CLI measurement information associated with the second UE and corresponding to the reflection coefficient measurement configuration from the second network node in response to transmitting the network information. Additionally, the method further comprises: identifying a specific reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration based on the CLI measurement information. Additionally, the method further comprises: configuring the IRS using the specific reflection coefficient.

[0010] Another example includes an apparatus for managing CLI by a first network node of a wireless communication network, comprising: a memory, and a processor communicatively coupled to the memory. The processor is configured to: generate a reflection coefficient measurement configuration for an IRS controlled by the first network node to mitigate CLI caused by a first UE controlled by the first network node to a second UE controlled by a second network node. The processor is further configured to: transmit network information including the reflection coefficient measurement configuration to the second network node and to the IRS. Additionally, the processor is further configured to: receive CLI measurement information associated with the second UE and corresponding to the reflection coefficient measurement configuration from the second network node in response to transmitting the network information. Additionally, the processor is further configured to: identify a specific reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration based on the CLI measurement information. Additionally, the processor is further configured to: configure the IRS using the specific reflection coefficient.

[0011] Another example aspect includes an apparatus for managing CLI by a first network node of a wireless communication network, comprising: means for generating a reflection coefficient measurement configuration for an IRS controlled by the first network node to mitigate CLI caused by a first UE controlled by the first network node to a second UE controlled by a second network node. The apparatus further includes: means for transmitting network information including the reflection coefficient measurement configuration to the second network node and to the IRS. Additionally, the apparatus further includes: means for receiving CLI measurement information associated with the second UE and corresponding to the reflection coefficient measurement configuration from the second network node in response to transmitting the network information. Additionally, the apparatus further includes: means for identifying a specific reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration based on the CLI measurement information. Additionally, the apparatus further includes: means for configuring the IRS using the specific reflection coefficient.

[0012] A computer-readable medium (e.g., a non-transient computer-readable medium) storing instructions for managing CLI by a first network node of a wireless communication network, these instructions being executable by a processor to: generate a reflection coefficient measurement configuration for an IRS controlled by the first network node to mitigate CLI caused by a first UE controlled by the first network node to a second UE controlled by a second network node. These instructions are further executable to: transmit network information including the reflection coefficient measurement configuration to the second network node and to the IRS. Additionally, these instructions are further executable to: receive CLI measurement information associated with the second UE and corresponding to the reflection coefficient measurement configuration from the second network node in response to transmitting the network information. Additionally, these instructions are further executable to: identify a specific reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration based on the CLI measurement information. Additionally, these instructions are further executable to: configure the IRS using the specific reflection coefficient.

[0013] Another example aspect includes a method for managing CLI by a second network node in a wireless communication network, comprising: receiving from a first network node network information including a reflection coefficient measurement configuration, the reflection coefficient measurement configuration being targeted at an IRS controlled by the first network node to mitigate CLI caused by a first UE controlled by the first network node to a second UE controlled by the second network node. The method further comprises: transmitting a CLI measurement configuration to the second UE for the second UE to perform one or more CLI measurements corresponding to at least one reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration. Additionally, the method further comprises: receiving from the second UE one or more CLI measurements corresponding to the CLI measurement configuration. Additionally, the method further comprises: transmitting CLI measurement information corresponding to the one or more CLI measurements to the first network node.

[0014] Another example aspect includes an apparatus for managing CLI by a second network node in a wireless communication network, comprising: a memory, and a processor communicatively coupled to the memory. The processor is configured to: receive from a first network node network information including a reflection coefficient measurement configuration for an IRS controlled by the first network node to mitigate CLI caused by a first UE controlled by the first network node to a second UE controlled by the second network node. The processor is further configured to: transmit the CLI measurement configuration to the second UE for the second UE to perform one or more CLI measurements corresponding to at least one reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration. Additionally, the processor is further configured to: receive from the second UE one or more CLI measurements corresponding to the CLI measurement configuration. Additionally, the processor is further configured to: transmit CLI measurement information corresponding to the one or more CLI measurements to the first network node.

[0015] Another example includes an apparatus for managing CLI by a second network node in a wireless communication network, comprising: means for receiving network information including a reflection coefficient measurement configuration from a first network node, the reflection coefficient measurement configuration being directed to an IRS controlled by the first network node to mitigate CLI caused by a first UE controlled by the first network node to a second UE controlled by the second network node. The apparatus further includes: means for transmitting a CLI measurement configuration to the second UE for the second UE to perform one or more CLI measurements corresponding to at least one reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration. Additionally, the apparatus further includes: means for receiving one or more CLI measurements corresponding to the CLI measurement configuration from the second UE. Additionally, the apparatus further includes: means for transmitting CLI measurement information corresponding to the one or more CLI measurements to the first network node.

[0016] Another example includes a computer-readable medium (e.g., a non-transient computer-readable medium) storing instructions for managing CLIs by a second network node in a wireless communication network. These instructions are executable by a processor to: receive from a first network node network information including a reflection coefficient measurement configuration for an IRS controlled by the first network node to mitigate CLIs caused by a first UE controlled by the first network node to a second UE controlled by the second network node. These instructions are further executable to: transmit a CLI measurement configuration to the second UE for the second UE to perform one or more CLI measurements corresponding to at least one reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration. Additionally, these instructions are further executable to: receive from the second UE one or more CLI measurements corresponding to the CLI measurement configuration. Additionally, these instructions are further executable to: transmit CLI measurement information corresponding to the one or more CLI measurements to the first network node.

[0017] To achieve the foregoing and related objectives, these one or more aspects include the features fully described below and specifically pointed out in the claims. Certain illustrative features of these one or more aspects are set forth in detail in the following description and drawings. However, these features merely indicate a few of the various ways in which the principles of these various aspects may be employed, and this description is intended to cover all such aspects and their equivalents. Brief description of the attached diagram

[0019] Figure 1 These are illustrations illustrating examples of wireless communication systems and access networks according to various aspects of this disclosure.

[0020] Figure 2A This is an example illustration of the first frame explaining various aspects of this disclosure.

[0021] Figure 2B This is a diagram illustrating an example of a downlink channel within a subframe according to various aspects of this disclosure.

[0022] Figure 2C This is an example illustration of the second frame explaining various aspects of this disclosure.

[0023] Figure 2D This is a diagram illustrating an example of an uplink channel within a subframe according to various aspects of this disclosure.

[0024] Figure 3 This is a diagram illustrating examples of hardware components of a base station and a UE in an access network according to various aspects of this disclosure.

[0025] Figure 4 This is a diagram illustrating an example of cross-link interference (CLI) between two user equipments (UEs) over time in certain resources according to various aspects of this disclosure.

[0026] Figure 5 This is a diagram illustrating an example of an intelligent reflective surface (IRS) according to various aspects of this disclosure.

[0027] Figure 6 This is a diagram illustrating examples of wireless communication systems employing IRS according to various aspects of this disclosure.

[0028] Figure 7 This is a diagram illustrating an example of a multi-cell wireless communication system employing an IRS according to various aspects of this disclosure.

[0029] Figure 8 This is a diagram illustrating an example of a time-domain mode of a set of different reflectance coefficients configured for CLI measurements by an IRS according to various aspects of this disclosure.

[0030] Figure 9 This is a diagram illustrating an example of network information exchange managed by a CLI using an IRS, according to various aspects of this disclosure.

[0031] Figure 10 This is a diagram illustrating an example apparatus (such as a first network node) for managing CLI according to various aspects of this disclosure.

[0032] Figure 11 This is a flowchart of a method for managing CLI by a first network node of a wireless communication network according to various aspects of this disclosure.

[0033] Figure 12This is a flowchart of the first additional or optional step of a method for managing CLI by a first network node of a wireless communication network according to various aspects of this disclosure.

[0034] Figure 13 This is a flowchart of a second additional or optional step in a method for managing CLI by a first network node of a wireless communication network according to various aspects of this disclosure.

[0035] Figure 14 This is a flowchart of a third additional or optional step in a method for managing CLI by a first network node of a wireless communication network according to various aspects of this disclosure.

[0036] Figure 15 This is a flowchart of a fourth additional or optional step in a method for managing CLI by a first network node of a wireless communication network according to various aspects of this disclosure.

[0037] Figure 16 This is a diagram illustrating an example device (such as a second network node) for managing CLI according to various aspects of this disclosure.

[0038] Figure 17 This is a flowchart of a method for managing CLI by a second network node of a wireless communication network according to various aspects of this disclosure.

[0039] Figure 18 This is a flowchart of the first additional or optional step of a method for managing CLI by a second network node of a wireless communication network according to various aspects of this disclosure.

[0040] Figure 19 This is a flowchart of a second additional or optional step in a method for managing CLI by a second network node of a wireless communication network according to various aspects of this disclosure.

[0041] Figure 20 This is a flowchart of a third additional or optional step in a method for managing CLI by a second network node of a wireless communication network according to various aspects of this disclosure.

[0042] Figure 21 This is a flowchart of a fourth additional or optional step in a method for managing CLI by a second network node of a wireless communication network according to various aspects of this disclosure.

[0043] Detailed description

[0044] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent only the configurations in which the concepts described herein can be practiced. This detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0045] In some respects, a radio transmission from a first user equipment (UE) in a wireless communication system can interfere with the ability of an adjacent second UE to receive radio transmissions from another device. That is, the second UE can receive a desired radio transmission in combination with different radio transmissions from the first UE. For example, the second UE may be configured to receive a desired radio transmission during the same time period that the first UE may be configured to transmit a radio transmission, resulting in cross-link interference (CLI). Conventional wireless communication systems may implement one or more CLI management procedures to attempt to mitigate the impact of CLI from the first UE on the second UE. However, in some respects, CLI management procedures may not utilize the use of intelligent reflective surfaces (IRS) to manage CLI.

[0046] This paper presents various methods for exchanging network information between network nodes to manage CLI using an IRS. In some aspects, this network information exchange allows network nodes to configure the IRS to mitigate the impact of CLI on the UE. Furthermore, the methods presented in this paper can reduce interference and improve resource efficiency compared to conventional communication systems.

[0047] Several aspects of a telecommunications system will now be described with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below and explained in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0048] As an example, an element, or any part of an element, or any combination of elements, may be implemented as a "processing system" including one or more processors. Examples of processors include: microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. One or more processors in a processing system can execute software. Software should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms.

[0049] Accordingly, in one or more example embodiments, the described functionality can be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality can be stored or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media, which may be referred to as non-transient computer-readable media. Non-transient computer-readable media excludes transient signals. The storage medium can be any available medium accessible to a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disc storage, magnetic disk storage, other magnetic storage devices, combinations of computer-readable media of the types described above, or any other medium capable of being used to store computer-executable code in the form of instructions or data structures accessible to a computer.

[0050] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system 100 (also known as a wireless wide area network (WWAN)) includes a base station (or network node) 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)).

[0051] In some aspects, base station 102 may include a CLI management component 187 configured to employ an intelligent reflective surface (IRS) to manage cross-link interference (CLI). CLI management component 187 may include a set of components such as a transmit (TX) CLI management component 188 and a receive (RX) CLI management component 189. For example, TX CLI management component 188 may be configured to generate a reflection coefficient measurement configuration, transmit network information, receive CLI measurement information, identify specific reflection coefficients, and configure the IRS to reduce or eliminate CLI caused by a first UE 104 served by base station 102 having TX CLI management component 188 to a second UE 104 served by another base station 102. In another aspect, RX CLI management component 189 may be configured to receive network information, transmit a CLI measurement configuration, receive CLI measurements, and transmit CLI measurement information to reduce or eliminate CLI caused by a second UE 104 served by another base station 102 to a first UE 104 served by base station 102 having RX CLI management component 189.

[0052] Base station 102 may include macrocells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macrocells include base stations. Small cells include femtocells, picocells, and microcells. Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface), which may be wired or wireless. Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) may interface with core network 190 via a second backhaul link 184, which may be wired or wireless. In addition to other functions, base station 102 may perform one or more of the following functions: user data transmission, radio channel cryptography and decoding, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of Non-Access Stratum (NAS) messages, NAS node selection, synchronization, Radio Access Network (RAN) sharing, Multimedia Broadcast Multicast Service (MBMS), subscriber and equipment tracking, RAN Information Management (RIM), paging, location, and delivery of alarm messages. Base stations 102 may communicate with each other directly or indirectly (e.g., via EPC 160 or core network 190) on a third backhaul link 134 (e.g., X2 interface). The third backhaul link 134 may be wired or wireless.

[0053] Base station 102 can wirelessly communicate with UE 104. Each base station 102 can provide communication coverage for a corresponding geographic coverage area 110. Overlapping geographic coverage areas 110 may exist. For example, small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include a Home Evolved B Node (eNB) (HeNB) that can provide services to a restricted group called a Closed Subscriber Group (CSG). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also known as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technologies, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links may use one or more carriers. For each carrier allocated in a carrier aggregation totaling up to Yx MHz (x component carriers) for transmission in each direction, base station 102 and / or UE 104 may use a spectrum with a bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). These carriers may or may not be adjacent to each other. Carrier allocation may be asymmetric with respect to downlink and uplink (e.g., more or fewer carriers may be allocated to the downlink compared to the uplink). Component carriers may include primary component carriers and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell), and the secondary component carriers may be referred to as secondary cells (SCells).

[0054] Some UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 may use downlink / uplink WWAN spectrum. D2D communication link 158 may use one or more sidelink channels, such as the Physical Sidelink Broadcast Channel (PSBCH), Physical Sidelink Discovery Channel (PSDCH), Physical Sidelink Shared Channel (PSSCH), and Physical Sidelink Control Channel (PSCCH). D2D communication can be achieved through a wide variety of wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0055] The wireless communication system 100 may further include a Wi-Fi access point (AP) 150 communicating with a Wi-Fi station (STA) 152 via a communication link 154, for example, in an unlicensed spectrum such as 5 GHz. When communicating in the unlicensed spectrum, the STA 152 and / or AP 150 may perform a clear channel assessment (CCA) to determine the availability of a channel before communication.

[0056] Whether it is a small cell 102' or a large cell (e.g., a macro base station), base station 102 may include an evolved B-node (eNB), a gB-node (gNB), or other types of base stations. Some base stations (such as gNB 180) can operate in one or more frequency bands within the electromagnetic spectrum.

[0057] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same 5 GHz unlicensed spectrum as that used by Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can enhance access network coverage and / or increase access network capacity.

[0058] The electromagnetic spectrum is typically subdivided into various classes, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating bands have been designated as frequency ranges FR1 (410MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). The frequencies between FR1 and FR2 are generally referred to as the mid-band frequencies. Although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the “sub-6GHz” band in various documents and articles. Similar naming issues sometimes arise regarding FR2, although it is different from the Extremely High Frequency (EHF) band (30GHz–300GHz) designated as the “millimeter wave” (mmW) band by the International Telecommunication Union (ITU), FR2 is often (interchangeably) referred to as the “millimeter wave” band in various documents and articles.

[0059] Considering the above aspects, unless otherwise stated, it should be understood that, as used herein, the term "sub-6GHz" and the like can broadly refer to frequencies less than 6GHz, within FR1, or including intermediate frequency band frequencies. Furthermore, unless otherwise stated, it should be understood that, as used herein, the term "millimeter wave" and the like can broadly refer to frequencies including intermediate frequency band frequencies, within FR2, or within the EHF band. However, communication using the mmW radio frequency band has extremely high path loss and short range. The mmW base station 180 can utilize beamforming 182 with the UE 104 to compensate for the high path loss and short range.

[0060] Base station 180 may transmit beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182'. UE 104 may also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 and / or UE 104 may perform beamforming to determine the optimal receive and transmit directions for each of base station 180 and / or UE 104. The transmit and receive directions of base station 180 may be the same or different. The transmit and receive directions of UE 104 may be the same or different. Although the beamformed signals are interpreted between UE 104 and base stations 102 / 180, aspects of beamforming can be similarly applied by UE 104 to communicate with another UE 104, such as via sidelink, V2X, V2V, or D2D communication.

[0061] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 may communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Generally, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are delivered through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), Packet Switched (PS) streaming service, and / or other IP services. The BM-SC 170 provides functionality for MBMS user service provisioning and delivery. The BM-SC 170 can serve as an entry point for content provider MBMS transmissions, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can be used to distribute MBMS traffic to base station 102 within a Broadcast-Specific Service Single Frequency Network (MBSFN) area, and can be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0062] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 may communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that handles signaling between UE 104 and the core network 190. Generally, AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP services 197. IP services 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS Streaming (PSS) service, and / or other IP services.

[0063] Base stations may include and / or be referred to as gNB, B-node, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmit / receive point (TRP), or some other suitable term. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptop devices, personal digital assistants (PDAs), satellite radios, GPS devices, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet devices, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similar functional devices. Some UE 104 may be referred to as IoT devices (e.g., parking timers, oil pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or some other suitable term.

[0064] While the following description provides an example of communication in conjunction with 5G NR, the concepts described herein can be applied to other similar fields such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0065] Reference Figures 2A-2D These diagrams illustrate network elements (e.g., base station 102, UE 104) that can be used in wireless communication systems and the above-mentioned... Figure 1Examples of different resources for communication between access networks 100 as described herein. Resources can be time-based, frequency-based, or both.

[0066] Figure 2A This is a diagram 200 illustrating an example of the first subframe within the 5G NR frame structure. Figure 2B Figure 230 is an example illustrating the downlink channel within a 5G NR subframe. Figure 2C This is a diagram 250 illustrating an example of the second subframe within the 5G NR frame structure. Figure 2D Figure 280 illustrates an example of an uplink channel within a 5G NR subframe. The 5G NR frame structure can be Frequency Division Duplex (FDD), where, for a given set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to either downlink or uplink; or it can be Time Division Duplex (TDD), where, for a given set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to both downlink and uplink. Figure 2A , Figure 2C In the provided example, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly downlink) and subframe 3 is configured with slot format 1 (mostly uplink), where D is downlink, U is uplink, and F is for flexible use between downlink and uplink. Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are all downlink and all uplink, respectively. Other slot formats 2-61 include downlink, uplink, and a mixture of flexible symbols. The UE is configured to have a slot format via the received Slot Format Indicator (SFI) (dynamically configured via Downlink Control Information (DCI) or semi-statically / statically configured via Radio Resource Control (RRC) signaling). Note that the following description also applies to 5G NR frame structures for TDD.

[0067] Other wireless communication technologies may have different frame structures and / or different channels. A frame (e.g., 10 milliseconds) may be divided into 10 equally sized subframes (e.g., 1 milliseconds). Each subframe may include one or more time slots. Subframes may also include mini-time slots, which may include 7, 4, or 2 symbols. Each time slot may include 7 or 14 symbols, depending on the time slot configuration. For time slot configuration 0, each time slot may include 14 symbols, while for time slot configuration 1, each time slot may include 7 symbols. The symbols on the downlink may be cyclic prefix (CP) OFDM (CP-OFDM) symbols. The symbols on the uplink may be CP-OFDM symbols (for high-throughput scenarios) or Discrete Fourier Transform (DFT) Extended OFDM (DFT-s-OFDM) symbols (also known as single-carrier frequency division multiple access (SC-FDMA) symbols) (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the time slot configuration and parameter design. For slot configuration 0, different parameter designs μ from 0 to 5 allow 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different parameter designs 0 to 2 allow 2, 4, and 8 slots per subframe, respectively. Correspondingly, for slot configuration 0 and parameter design μ, there are 14 symbols per slot and 2 symbols per subframe. μ Each time slot. The subcarrier spacing and symbol length / duration vary depending on the design parameters. The subcarrier spacing can be equal to 2. μ *15kHz, where μ is the parameter design from 0 to 5. Thus, parameter design μ=0 has a subcarrier spacing of 15kHz, while parameter design μ=5 has a subcarrier spacing of 480kHz. Symbol length / duration is inversely correlated with subcarrier spacing. Figures 2A-2D Examples are provided for slot configuration 0 with 14 symbols per slot and parameter design μ=2 with 4 slots per subframe. In such examples, the slot duration can be 0.25 milliseconds, the subcarrier spacing can be 60 kHz, and the symbol duration can be approximately 16.67 microseconds (μs). Within the frame set, there may be one or more different bandwidth portions (BWPs) that are frequency-division multiplexed (see [link to relevant documentation]). Figure 2B Each BWP can have specific parameter designs.

[0068] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) extending 12 consecutive subcarriers (also known as a physical RB (PRB)). The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0069] like Figure 2AAs explained in the text, some REs carry reference (pilot) signals (RS) for the UE. RSs may include demodulation RS (DM-RS) for channel estimation at the UE (indicated as Rx for a specific configuration, where 100x is the port number, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS). RSs may also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0070] Figure 2B Examples of various downlink channels within a subframe of a frame are explained. The Physical Downlink Control Channel (PDCCH) carries the DCI within one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, 16, or 32 CCEs), each CCE comprising nine RE groups (REGs), each REG comprising four coherent REs in the OFDM symbols of the RB. A PDCCH within a BWP may be referred to as a Control Resource Set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a shared search space, a UE-specific search space) during PDCCH monitoring on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies spanning the channel bandwidth. The Primary Synchronization Signal (PSS) may be located within symbol 2 of a specific subframe of the frame. The PSS is used by the UE 104 to determine subframe / symbol timing and physical layer identity. The Secondary Synchronization Signal (SSS) may be located within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the Physical Layer Cell Identity Group Number and radio frame timing. Based on the Physical Layer Identity and the Physical Layer Cell Identity Group Number, the UE can determine the Physical Cell Identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DM-RS. The Physical Broadcast Channel (PBCH) carrying the Master Information Block (MIB) can be logically grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block (also known as an SS block (SSB)). The terms SSB and SS / PBCH are used interchangeably. The MIB provides the number of RBs in the system bandwidth and the System Frame Number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information (such as System Information Block (SIB)) not transmitted via the PBCH, and paging messages.

[0071] like Figure 2CAs explained, some REs carry DM-RS for channel estimation at the base station (indicated as R for a specific configuration, but other DM-RS configurations are possible). The UE can transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS can be transmitted in the first or first two symbols of the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is being transmitted and on the specific PUCCH format used. The UE can transmit a probe reference signal (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit the SRS on one of the combs. The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the uplink.

[0072] Figure 2D Examples of various uplink channels within a frame's subframes are explained. The PUCCH can be located as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) ACK / NACK feedback. The PUCCH carries data and may additionally be used to carry buffer status reports (BSR), power clearance reports (PHR), and / or UCI.

[0073] Figure 3This is a block diagram 300 of an example hardware component of a base station 102 communicating with UE 104 in the access network. In the downlink, IP packets from EPC 160 can be provided to controller / processor 315. Controller / processor 315 can implement Layer 3 and / or Layer 2 functionality. Layer 3 may include the Radio Resource Control (RRC) layer, and Layer 2 may include the Service Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. The controller / processor 315 can provide RRC layer functionality associated with broadcasting system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-Radio Access Technology (RAT) mobility, and measurement configuration of UE measurement reports; PDCP layer functionality associated with header compression / decompression, security (cryptography, cryptographic decoding, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with upper-layer PDU delivery, error correction via ARQ, concatenation, segmentation and reassembly of RLC Service Data Units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto transport blocks (TBs), demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority differentiation.

[0074] Transmit (TX) processor 316 and receive (RX) processor 313 implement Layer 1 functionality associated with various signal processing functions. Layer 1, which may include a physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) decoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 may process the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The decoded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream can be spatially precoded to generate multiple spatial streams. Channel estimates from channel estimator 314 can be used to determine coding and modulation schemes and for spatial processing. The channel estimates can be derived from reference signals and / or channel condition feedback transmitted by UE 104. Each spatial stream can then be provided to a different antenna 311 via a separate transmitter 312TX. Each transmitter 312TX can modulate an RF carrier with the corresponding spatial stream for transmission.

[0075] At UE 104, each receiver 352RX can receive signals via its corresponding antenna 351. Each receiver 352RX can recover the information modulated onto the RF carrier and provide that information to the receive (RX) processor 353. The TX processor 356 and RX processor 353 implement Layer 1 functionality associated with various signal processing functions. The RX processor 353 can perform spatial processing on the information to recover any spatial stream destined for UE 104. If there are multiple spatial streams destined for UE 104, or when multiple spatial streams are destined for UE 104, these multiple spatial streams can be combined by the RX processor 353 into a single OFDM symbol stream. The RX processor 353 can then use a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal can include a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, as well as the reference signal, can be recovered and demodulated by determining the signal constellation points most likely to be transmitted by base station 102. These soft decisions can be based on channel estimates calculated by channel estimator 354. These soft decisions can then be decoded and deinterleaved to recover the original data and control signals transmitted by base station 102 on the physical channel. These data and control signals can then be provided to controller / processor 355 that implements layer 3 and layer 2 functionality.

[0076] The controller / processor 355 may be associated with a memory 357 that stores program code and data. The memory 357 may be referred to as a non-transient computer-readable medium. The controller / processor 355 provides demultiplexing, packet reassembly, cipher decoding, header decompression, and control signal processing between the transport and logical channels to recover IP packets from the EPC 160. The controller / processor 355 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0077] Similar to the functionality described in conjunction with the transmissions performed by base station 102, controller / processor 355 can provide RRC layer functionality associated with system information (e.g., MIB, SIB) capture, RRC connectivity, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (cryptography, cryptographic decoding, integrity protection, integrity verification); RLC layer functionality associated with upper-layer PDU delivery, error correction via ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto TBs, demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority ordering.

[0078] The channel estimate derived by the channel estimator 354 from the reference signal or feedback transmitted by the base station 102 can be used by the TX processor 356 to select an appropriate coding and modulation scheme and to facilitate spatial processing. The spatial stream generated by the TX processor 356 can be provided to different antennas 351 via separate transmitters 352TX. Each transmitter 352TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0079] Uplink transmissions can be handled at base station 102 in a manner similar to that described in conjunction with the receiver function at UE 104. Each receiver 312RX can receive signals via its corresponding antenna 31. Each receiver 312RX can recover the information modulated onto the RF carrier and provide that information to the RX processor 313.

[0080] The controller / processor 315 may be associated with and coupled to a memory 317 storing program code and data. The memory 317 may be referred to as a non-transient computer-readable medium. The controller / processor 315 may provide demultiplexing, packet reassembly, cipher decoding, header decompression, and control signal processing between transport and logical channels to recover IP packets from the UE 104. IP packets from the controller / processor 315 may be provided to the EPC 160. The controller / processor 315 may also be responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0081] In some aspects, base station 102 may include a CLI management component 187 configured to manage CLIs using an IRS. CLI management component 187 may include a set of components, such as a TX CLI management component 188 and an RX CLI management component 189. For example, TX CLI management component 188 may be configured to generate reflectance measurement configurations, transmit network information, receive CLI measurement information, identify specific reflectances, and configure the IRS. RX CLI management component 189 may be configured to receive network information, transmit CLI measurement configurations, receive CLI measurements, and transmit CLI measurement information.

[0082] In these respects, at least one of the TX processor 316, the RX processor 313, and the controller / processor 315 can be configured to perform operations related to... Figure 1 This relates to aspects of the CLI management component 187 (e.g., TX CLI management component 188, RX CLI management component 189). For example, memory 317 may store computer-executable instructions that define the CLI management component 187. In other aspects, the TX processor 316, RX processor 313, and / or controller / processor 315 may be configured to execute the CLI management component 187.

[0083] Wireless communication systems can be configured to share available system resources and provide various telecommunications services (e.g., telephone, video, data, messaging, broadcasting, etc.) based on multiple access technologies that support communication with multiple users (such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, TD-SCDMA, etc.). In many cases, common protocols facilitating communication with wireless devices are adopted in various telecommunications standards. For example, communication methods associated with enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable low latency communication (URLLC) can be incorporated into 5G NR telecommunications standards, while others can be incorporated into 4G LTE standards. As mobile broadband technology is part of continuous evolution, further improvements in mobile broadband remain useful for the continued development of such technologies.

[0084] Figure 4 The explanation of wireless communication systems (e.g., Figure 1 Two wireless communication devices (e.g., in a wireless communication system 100) Figure 1 Figure 400 illustrates an example of cross-link interference (CLI) between UEs 104A-B. CLI can generally refer to interference (e.g., unwanted signals) transmitted by one UE (e.g., the first UE 104A) that can be received by another UE (e.g., the second UE 104B) that is near (e.g., adjacent) the transmitting UE.

[0085] In some respects, CLI can occur when a wireless communication system (e.g., one or more base stations 102) configures different time-domain duplex (TDD) configurations (e.g., downlink and uplink time slot formats) to a nearby UE. For example, as Figure 4 As shown, the first UE 104A may be configured with a first TDD configuration 404A, and the second UE 104B may be configured with a second TDD configuration 404B. The first TDD configuration 404A and the second TDD configuration 404B may be different from each other. For example, the first UE 104A may be served by a first cell or base station 102 configured with the first TDD configuration 404A, and the second UE 104B may be served by a second cell or base station 102 configured with the second TDD configuration 404B. Alternatively or additionally, CLI may occur between the first UE 104A and the second UE 104B when they are controlled by the same network node.

[0086] Continue to refer to Figure 4 CLI can occur during an overlapping time period 410 (e.g., one or more OFDM symbols in a time slot within a frame or subframe), during which the first UE 104A can be configured to receive wireless communication concurrently with the second UE 104B. In this respect, the first UE 104A can be referred to as the transmitting UE or the attacking UE, and the second UE 104B can be referred to as the receiving UE or the victim UE. That is, if the uplink symbols of the first UE 104A conflict or overlap with at least one downlink symbol of the second UE 104B in time, or when the uplink symbols of the first UE 104A conflict or overlap with at least one downlink symbol of the second UE 104B in time, the second UE 104B can receive wireless transmissions as CLI from the first UE 104A during the downlink symbol period of the second UE 104B.

[0087] In some aspects, the base station 102 operating the CLI management component 187 can instruct the second UE 104B to perform CLI measurements during the overlapping period 410 in which CLIs occur. That is, the wireless communication system can configure one or more CLI measurement resources for the second UE 104B to perform CLI measurements. CLI measurements can be based on one or more measurements of a reference signal received by the second UE 104B, such as Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Signal-to-Noise Ratio (SNR), and Signal-to-Interference Plus Noise Ratio (SINR). For example, the reference signal may include a Probe Reference Signal (SRS). In other optional or additional aspects, the reference signal may be periodically transmitted to the second UE 104B, and the second UE 104B may be configured to periodically perform CLI measurements on the received reference signal. In other optional or additional aspects, the first UE 104A may not transmit dedicated signals for CLI measurements to the second UE 104B, or the first UE 104A may not be notified that CLI measurements are being performed based on the first UE 104A’s radio transmissions (e.g., interfering with radio transmissions).

[0088] In other optional or additional aspects, two or more attacking UEs (e.g., first UE 104A) may perform radio transmissions that conflict with those of the victim UE (e.g., second UE 104B). In such an aspect, second UE 104B may be configured to perform CLI measurements against a specific attacking UE (e.g., first UE 104A). For example, second UE 104B may be configured to measure the RSRP corresponding to first UE 104A. Additionally or alternatively, second UE 104B may be configured to perform CLI measurements against multiple attacking UEs.

[0089] In other optional or additional aspects, the base station 102 operating the CLI management component 187 may configure the second UE 104B to transmit a CLI measurement report including one or more CLI measurements. Based on the CLI measurement report, the wireless communication system (e.g., the base station 102 operating the CLI management component 187) may determine whether to execute a CLI mitigation procedure. For example, the wireless communication system may adjust the scheduling (e.g., TDD configuration) of the attacking UE (e.g., the first UE 104A) and / or the victim UE (e.g., the second UE 104B) to avoid conflicts and / or balance the throughput of different UEs.

[0090] In some respects, signaling and / or procedures for performing measurements of CLIs caused by an attacker UE (e.g., the first UE 104A) by a victim UE (e.g., the second UE 104B) may be described in one or more regulations and / or standards (e.g., 3GPP).

[0091] Figure 5 Figure 500 illustrates an example of an intelligent reflective surface (IRS). The IRS 510 (also known as a reconfigurable intelligent surface, reflective intelligent surface, or software-controlled metasurface) may comprise a passive panel surface having a large number of reconfigurable elements 515 that can be dynamically configured to manipulate the reflective characteristics of the IRS 510. That is, the IRS 510 may be a passive device that can be configured to change the reflection direction of an incident signal (e.g., a beam of light, a wave) without injecting additional power into the reflected signal. For example, the IRS 510 may be configured with one or more reflection coefficients that can control the reflective characteristics of the IRS 510. For example, the reflection coefficients may include the reflection amplitude and / or phase shift of the elements 515 of the IRS 510. The reflection amplitude may be configured to adjust a portion of the power of the incident signal reflected by each element 515. For example, the reflection amplitude of a particular element 515 can be configured to reflect half (e.g., 50%, 0.5%), all (e.g., 100%, 1.0%), or none (e.g., 0%, 0.0%) the power of the incident signal. That is, the reflection amplitude value can be any value greater than or equal to zero (0.0) and less than or equal to one (1.0). Alternatively or additionally, each element 515 can be configured to inject a phase shift into the reflected signal. For example, the phase shift can be greater than or equal to zero (0.0) and less than 2π (approximately 6.28).

[0092] In some respects, IRS 510 can be configured to provide an alternative propagation path for the signal that avoids (e.g., bypasses) obstacles and / or obstructions (e.g., buildings, trees, changes in terrain elevation) that could block a direct propagation path between two wireless communication devices. For example, the direct propagation path 530 between network node 102 and UE 104 may be blocked by obstacle 520, and as illustrated by the dashed lines, propagation path 530 will not reach UE 104. Figure 5 As shown, IRS 510 can be configured to provide an alternative propagation path (e.g., 535A-B, hereinafter collectively referred to as "535") between network node 102 and UE 104. That is, IRS 510 can be configured to adjust the amplitude and / or phase shift of the signal 535A transmitted by network node 102 so that the reflected signal 535B reaches UE 104.

[0093] In other optional or additional aspects, in addition to the explained configuration that enhances coverage by avoiding dead zones, wireless communication systems can deploy the IRS 510 to provide several other network topology enhancements. For example, a wireless communication device can use a hybrid deployment of one or more active base stations 102 and / or access points and one or more passive IRS 510s to transmit a copy of a signal to another wireless communication device (e.g., to provide transmit diversity), thereby enhancing network throughput. That is, the wireless communication device can use both the direct propagation path and the alternative propagation path created by the IRS 510 to transmit the same signal to another wireless communication device. In another example, the IRS 510 can enhance physical layer security by canceling signal reflections before the signal is received by an unauthorized (e.g., eavesdropping) device. Furthermore, the IRS 510 can be used for wireless information and power delivery in Internet of Things (IoT) networks.

[0094] Figure 6 The diagram illustrates a wireless communication system 600 using the IRS 510. Figure 6 The architecture of the wireless communication system 600 described herein is similar in many respects to the above references. Figure 1 The architecture of the described wireless communication system 100 may include additional features not mentioned above. For simplicity, some components of the wireless communication system 100 described above have been omitted. Network node 102 may include CLI management component 187.

[0095] As mentioned above, the IRS 510 can introduce additional propagation paths that may have a constructive effect (i.e., increase received power) or a destructive effect (i.e., reduce interference). For example, if the reflection is destructive, interference from the first UE 104A at the second UE 104B can be mitigated by the signal reflected from the IRS 510. In this case, the base station 102 can program the IRS 510 with different coefficients and configure it for the victim UE (e.g., the second UE 104B) to measure which coefficient has the best CLI mitigation effect, i.e., the lowest CLI strength (lowest RSRP or RSSI).

[0096] For example, on one hand, the first UE 104A may be transmitting uplink signal 620 to network node 102. The transmission of uplink signal 620 can also be received by the second UE 104B as CLI 625. That is, as referred to above... Figure 4As discussed, if the uplink symbols of the first UE 104A conflict with at least one downlink symbol of the second UE 104B, or when the uplink symbols of the first UE 104A conflict with at least one downlink symbol of the second UE 104B, the second UE 104B may receive radio transmission 625 from the first UE 104A as CLI during the downlink symbol period of the second UE 104B.

[0097] In other respects, the transmission of uplink signal 620 may also include the transmission of signal 630A directed toward IRS 510. For example, signal 630A may be transmitted via a sidelobe of the beam used to transmit uplink signal 620.

[0098] In some respects, IRS 510 can be configured to create an alternative propagation path for signal 630A transmitted by the first UE 104A, such that reflected signal 630B reaches the second UE 104B to cancelively interfere with CLI 625, thereby reducing or eliminating interference to the second UE 104B. For example, IRS 510 can be further configured to adjust the amplitude and / or phase shift of signal 630A such that reflected signal 630B has a canceling effect on CLI signal 625. That is, signal 630B can be configured to reduce interference caused by CLI signal 625. In an alternative scenario, IRS 510 can be configured to adjust the amplitude and / or phase shift of the reflected signal such that the reflected signal has a constructive effect on signals that the second UE 104B is having difficulty receiving (i.e., increasing the received power of the signal).

[0099] In other respects, the IRS 510 can be configured with different reflection coefficients, and the second UE 104B can be configured to perform CLI measurements for each of these different reflection coefficients, as referenced above. Figure 4 As described. The resulting CLI measurement report corresponding to each of these different reflection coefficients can be used to determine at least one reflection coefficient for configuring IRS 510, which can mitigate CLI caused by the first UE 104A on the second UE 104B (e.g., reducing the power level of CLI signal 625). For example, IRS 510 can be configured using a specific reflection coefficient corresponding to the minimum (e.g., lowest) CLI measurement.

[0100] Figure 7 The diagram illustrates a multi-cell wireless communication system 700 using the IRS 510. Figure 7 The architecture of the wireless communication system 700 described above is similar in many respects to that described above. Figure 1 and Figure 6The architectures of wireless communication systems 100 and 600 are described, and may include additional features not mentioned above. For simplicity, some components of the wireless communication systems 100 and 600 described above have been omitted. Network nodes 102A–B may include CLI management component 187.

[0101] The multi-cell wireless communication system 700 may include a first network node 102A (e.g., a base station, gNB) having a cell 710A and controlling a first UE 104A. That is, cell 710A may be the serving cell of the first UE 104A. The multi-cell wireless communication system 700 may further include a second network node 102B (e.g., a base station, gNB) having a cell 710B and controlling a second UE 104B. That is, cell 710B may be the serving cell of the second UE 104B. (Referring to the above...) Figure 4 and Figure 6 As described, the first UE 104A can transmit an uplink signal 720 that can cause a reception conflict between the CLI signal 725 and the downlink signal 730 at the second UE 104B. Alternatively or additionally, the IRS 510 can be configured to provide an alternative propagation path (e.g., 740A-740B) that can mitigate the impact of the CLI signal 725 on the second UE 104B.

[0102] In some respects, IRS 510 can be controlled by the second network node 102B. In such respects, the second network node 102B can directly configure IRS 510 to mitigate the impact of CLI signal 725 on the second UE 104B.

[0103] In other respects, IRS 510 can be controlled by the first network node 102A. In such respect, as described in more detail below, the first network node 102A and the second network node 102B can exchange network information such that the first network node 102A and the second network node 102B can configure the second UE 104B to perform CLI measurements using one or more different configurations of IRS 510, so that the first network node 102A configures IRS 510 with a configuration that can mitigate the impact of CLI signal 725 on the second UE 104B.

[0104] In some aspects, one or more regulations and / or standards (e.g., 3GPP) may describe network information exchanges between network nodes for performing measurements of CLIs caused by an attacking UE (e.g., first UE 104A) on a victim UE (e.g., second UE 104B). For example, as part of the network information exchange, the network node controlling the attacking UE (e.g., first network node 102A) may provide time slot format information (e.g., TDD configuration) to the network node controlling the victim UE (e.g., second network node 102B). The second network node 102B may configure the second UE 104B to perform CLI measurements according to the time slot format information provided by the first network node 102A. Furthermore, as part of the network information exchange, the second network node 102B may provide the first network node 102A with revised time slot format information to adjust the transmit / receive scheduling of the first UE 104A to mitigate CLIs.

[0105] In other optional or additional aspects, network information exchange may include indications of the intended downlink / uplink configuration (such as in time-domain indications) and per-slot OFDM symbol-level UL / DL area indications. Remaining areas not indicated as DL or UL may be unused or flexible. Furthermore, in some cases, the indicated configuration may be assumed to be valid until a new configuration is received. Alternatively or additionally, periodicity and / or parameter designs (e.g., subcarrier spacing (SCS), CP length) may be configured. In other optional or additional aspects, the intended downlink / uplink configuration may include information for indicating a time slot within a period, and / or indications of the downlink / uplink area for each time slot (e.g., all downlink symbols in that time slot, all uplink symbols in that time slot, the number of downlink symbols in that time slot, and / or the number of uplink symbols).

[0106] However, the network information exchange described above may not take into account the use of an IRS to mitigate CLI. Therefore, the aspects presented herein provide multiple ways to exchange network information between network nodes (e.g., base stations 102A–102B) to configure an IRS (e.g., IRS 510) to mitigate CLI.

[0107] Continue to refer to Figure 7In some respects, IRS 510 may be located in a position close to (e.g., adjacent to) UEs 104A–104B. For example, in such a scenario, the distance between IRS 510 and each of UEs 104A–B may be less than a certain distance threshold, and / or IRS 510 may be within the coverage area of ​​at least the first UE 102A. Alternatively or additionally, IRS 510 may not be controlled by the second network node 102B. That is, IRS 510 may be controlled by the first network node 102A. In such respect, the first network node 102A may be configured to apply one or more reflection coefficients to IRS 510, which may mitigate (e.g., minimize) the power level of CLI signal 725 received by the second UE 104B. That is, if IRS 510 can be controlled by a base station other than the serving base station of the victim UE (e.g., the second network node 102B) (e.g., the first network node 102A), or when IRS 510 can be controlled by a base station other than the serving base station of the victim UE (e.g., the second UE 104B) (e.g., the second network node 102B) (e.g., the first network node 102A), the first network node 102A can be configured to exchange network information with the second network node 102B to program the reflection coefficient for IRS 510 for measuring CLI and mitigating CLI.

[0108] As discussed in further detail below, network information exchange may include a first network node 102A configuring a set of reflection coefficients for the IRS 510 to perform CLI measurements. In some aspects, a second network node 102B may configure the CLI measurements to be performed by the second UE 104B based on this set of reflection coefficients. Network information exchange may also include the second network node 102B reporting CLI measurement information corresponding to the CLI measurements to the first network node 102A. The CLI measurement information may indicate a set of reflection coefficients that can mitigate CLI from the first UE 104A to the second UE 104B. The first network node 102A may configure the IRS 510 based on the CLI measurement information. In other aspects, network information exchange procedures may be repeated to track dynamic changes in the CLI measured by the second UE 104B.

[0109] In some aspects, the first network node 102A can generate a reflection coefficient measurement configuration that includes a set of reflection coefficients to be applied to the IRS 510, while the second UE 104B performs CLI measurements for each reflection coefficient in that set. In some aspects, the first network node 102A can determine the set of reflection coefficients based on a predetermined set of reflection coefficients (e.g., a codebook). In other aspects, the first network node 102A can use a default set of reflection coefficients.

[0110] Alternatively or additionally, the reflectance measurement configuration may include a time-domain pattern of a set of different reflectances. That is, the reflectance measurement configuration may indicate the time duration during which the IRS 510 uses each of the different reflectances in the set. In some aspects, the reflectance measurement configuration may indicate the start time of using a first reflectance in the set of different reflectances. In other aspects, the reflectance measurement configuration may indicate the number of reflectances in the set of different reflectances. In still other aspects, the reflectance measurement configuration may include an indication of a value corresponding to each reflectance in the set of different reflectances. This value may include amplitude and phase information corresponding to at least one element 515 of the IRS 510. Alternatively or additionally, this value may correspond to an index value indicating amplitude and phase information corresponding to at least one element 515 of the IRS 510. In still other aspects, the reflectance measurement configuration may include a time-domain pattern indicator identifying the time-domain pattern.

[0111] In some respects, time units (e.g., milliseconds (msec), microseconds (μsec)) can be used to indicate the duration of time and / or the start time. Alternatively or additionally, time slot units can be used to indicate the duration of time and / or the start time. In such respects, a reference subcarrier spacing (SCS) can be provided to determine the time slot duration of the time-domain pattern.

[0112] In other respects, the time duration of each reflection coefficient in the time-domain model can be fixed. That is, each reflection coefficient in the time-domain model can be applied for the same time duration. Alternatively or additionally, the time duration of the reflection coefficients can be variable. That is, the reflection coefficients in the time-domain model can be applied for at least one different time duration.

[0113] Figure 8 This is a diagram illustrating an example of a time-domain pattern 800 illustrating a set of different reflection coefficients. In this example, which should not be construed as limiting, the time-domain pattern 800 may include four (4) different reflection coefficients 810A-810D (collectively referred to as “810”), which are applied to the IRS 510 for a corresponding time duration, such as, but not limited to, each 320 milliseconds. The reflection coefficients 810 may be applied in a repeating pattern over time, such as… Figure 8 As shown. That is, the first reflection coefficient 810A can be reapplied after a time period (e.g., t4) has elapsed for the fourth reflection coefficient 810D (e.g., at t5).

[0114] First network node 102A can configure IRS 510 according to time-domain mode 800 for each reflection coefficient 810 according to time-domain mode 800, so that second UE 104B can perform CLI measurements according to time-domain mode 800. That is, first network node 102A may have exchanged network information with second network node 102B including a reflection coefficient measurement configuration indicating time-domain mode 800. In response to obtaining the reflection coefficient measurement configuration, second network node 102B can transmit CLI measurement configuration to second UE for second UE 104B to perform one or more CLI measurements during the corresponding time duration of each reflection coefficient in time-domain mode 800. For example, second UE 104B can collect a first CLI measurement corresponding to reflection coefficient 810A during a first time period t1 (e.g., 320 milliseconds) in time-domain mode 800 according to CLI measurement configuration. After the first time period t1 elapses, the second UE 104B can switch to collecting a second CLI measurement corresponding to the reflection coefficient 810B during the second time period t2 of time-domain mode 800. After the second time period t2 elapses, the second UE 104B can switch to collecting a third CLI measurement corresponding to the reflection coefficient 810C during the third time period t3 of time-domain mode 800. After the third time period t3 elapses, the second UE 104B can switch to collecting a fourth CLI measurement corresponding to the reflection coefficient 810D during the fourth time period t4 of time-domain mode 800. After the fourth time period t4 elapses, the time-domain mode can repeat with the first CLI measurement corresponding to the reflection coefficient 810A.

[0115] In some respects, as part of switching from collecting CLI measurements corresponding to one reflection coefficient to collecting CLI measurements corresponding to another reflection coefficient, the second UE 104B can reset the filters, accumulators, etc., that can be used to perform CLI measurements. That is, the second network node 102B can configure the second UE 104B to perform layer 3 CLI measurement filtering separately for each different reflection coefficient of the IRS 510.

[0116] In other aspects, the second UE 104B may transmit CLI measurement reports after each time period (e.g., t1, t2, t3, t4, t5, t6) has elapsed. In other optional or additional aspects, the second UE 104B may transmit CLI measurement reports after the time-domain mode has been completed (e.g., after t4 has elapsed). In other optional or additional aspects, the second UE 104B may transmit CLI measurement reports as requested by the second network node 102B.

[0117] although Figure 8The example time-domain pattern 800 described herein illustrates a specific arrangement and order of the reflection coefficients 810; however, it should be understood that the number, arrangement (e.g., pattern), and repetition of the reflection coefficients 810 may differ without departing from the scope of this disclosure. It is worth noting that this disclosure can be adopted by any wireless communication system that wishes to implement CLI management using an IRS.

[0118] In some aspects, the network information exchange between the first network node 102A and the second network node 102B for managing CLI using IRS 510 can be initiated by the second network node 102B. For example, the second network node 102B can send a request to the first network node 102A to generate a reflection coefficient measurement configuration to be applied to IRS 510. Alternatively or additionally, the request may include the requested reflection coefficient measurement configuration generated by the second network node 102B. In such aspects, the second network node 102B can configure the CLI measurement to be performed by the second UE 104B according to the requested reflection coefficient measurement configuration generated by the second network node 102B or according to a different configuration determined by the first network node 102A.

[0119] In other respects, the second network node 102B may transmit the request in response to determining that the performance degradation of the second UE 104B may be caused by CLI. Alternatively or additionally, the second network node 102B may transmit the request in response to determining that the second UE 104B may be located in the vicinity (e.g., adjacent) of the IRS 510.

[0120] In other optional or additional aspects, the exchange of network information between the first network node 102A and the second network node 102B for managing CLI using the IRS 510 may be initiated by the first network node 102A. For example, the first network node 102A may transmit network information, including reflection coefficient measurement configuration, to the second network node 102B and to the IRS as an indication that a network information exchange for managing CLI using the IRS 510 is being initiated. In some aspects, the first network node 102A may transmit this network information in response to determining that the roaming UE has moved to a location that is near (e.g., adjacent to) another UE and / or the IRS 510.

[0121] In any case, the second network node 102B will receive the reflection coefficient measurement configuration from the first network node 102A, and then configure the second UE 104B to perform CLI measurements based on the received reflection coefficient measurement configuration.

[0122] In some respects, the second network node 102B may receive one or more CLI measurement reports from the second UE 104B in response to the second UE 104B being configured to perform one or more CLI measurements based on reflection coefficients indicated by the network information. The CLI measurement reports may indicate the CLI strength corresponding to each reflection coefficient.

[0123] The second network node 102B may be configured to transmit CLI measurement information to the first network node 102A based on CLI measurements received from the second UE 104B. In some aspects, the CLI measurement information may include a reflection coefficient corresponding to the minimum CLI intensity measured by the second UE 104B. In other optional or additional aspects, the CLI measurement information may include a sorted set of reflection coefficients, which may have been sorted according to the corresponding CLI intensity. The sorting order may be ascending or descending. In other optional or additional aspects, the CLI measurement information may include a CLI measurement corresponding to a direct propagation path between the first UE 104A and the second UE 104B for each reflection coefficient in the set of different reflection coefficients. Alternatively or additionally, the CLI measurement information may include a CLI measurement corresponding to an indirect propagation path between the first UE 104A and the second UE 104B via IRS 510 for each reflection coefficient in the set of different reflection coefficients.

[0124] The first network node 102A can be configured to identify a specific reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration based on CLI measurement information. For example, the first network node 102A can identify a reflection coefficient corresponding to the minimum CLI intensity indicated by the CLI measurement information as a specific reflection coefficient for configuring IRS 510. Alternatively or additionally, the first network node 102A can identify reflection coefficients based on a sorted set of reflection coefficients indicated by the CLI measurement information. In other aspects, the first network node 102A can identify reflection coefficients based on processing performed on the CLI measurement information, such as spatial analysis based on CLI measurements corresponding to direct propagation paths between the first UE 104A and the second UE 104B, and indirect propagation paths between the first UE 104A and the second UE 104B.

[0125] In other optional or additional aspects, the first network node 102A may be configured to select a specific reflection coefficient from a set of different reflection coefficients that has a corresponding CLI measurement that satisfies CLI measurement criteria. CLI measurement criteria may include selecting the reflection coefficient with the lowest (e.g., minimum) CLI. Alternatively or additionally, CLI measurement criteria may include selecting the average CLI measurement. In other aspects, CLI measurement criteria may include selecting the reflection coefficient that minimizes CLI measurements for multiple UEs.

[0126] The first network node 102A can be further configured to apply (e.g., configure) the identified reflection coefficient to the IRS 510. Thus, the IRS 510 can be configured to reflect a canceling signal to the second UE 104B that can mitigate the effects of CLI from the first UE 104A.

[0127] Therefore, the aspects presented herein provide a means for exchanging network information between network nodes (e.g., base stations 102A-102B) to manage CLI using an IRS (e.g., IRS 510). Furthermore, the aspects presented herein can reduce interference and improve resource efficiency compared to conventional communication systems.

[0128] Figure 9 Figure 900 illustrates an example of network information exchange in a wireless communication system using CLI management with an IRS. Figure 9 The wireless communication system described in the above references is similar in many respects. Figure 1 , Figure 6 and Figure 7 The architectures of wireless communication systems 100, 600, and 700 are described, and may include additional features not mentioned above. For simplicity, some elements of the wireless communication systems 100, 600, and 700 described above have been omitted. Network nodes 102A–B may include CLI management component 187.

[0129] In some aspects, network information exchange may be initiated by the second network node 102B at 902, thereby transmitting a request to the first network node 102A. This request may instruct the first network node 102A to generate a reflection coefficient measurement configuration to be applied to the IRS 510 and the second UE 104B. Alternatively or additionally, the request may include the requested reflection coefficient measurement configuration generated by the second network node 102B. In other aspects, the second network node 102B may transmit the request in response to determining that a performance degradation of the second UE 104B may be caused by CLI. Alternatively or additionally, the second network node 102B may transmit the request in response to determining that the second UE 104B may be located in a location near (e.g., adjacent to) the IRS 510.

[0130] In 904, the first network node 102A can transmit network information to the second network node 102B. (Refer to the above.) Figure 7 and Figure 8As described, the network information may include a reflection coefficient measurement configuration. This reflection coefficient measurement configuration may include a time-domain pattern of a set of different reflection coefficients and / or an indication of that set of different reflection coefficients. Specifically, the reflection coefficient measurement configuration may indicate a set of reflection coefficients that will be applied to the IRS 510 to perform CLI measurements, which may indicate at least one reflection coefficient that can mitigate the impact of CLI transmissions originating from the first UE 104A on the second UE 104B.

[0131] In some aspects, the first network node 102A may generate the reflectance measurement configuration according to a predetermined configuration. In other aspects, the first network node 102A may obtain the reflectance measurement configuration from a request transmitted by the second network node 102B at position 902.

[0132] The first network node 102A may transmit the reflection coefficient measurement configuration to the IRS 510 at 906. That is, the first network node 102A may configure the IRS 510 to apply one or more reflection coefficients according to the reflection coefficient measurement configuration. For example, if the reflection coefficient measurement configuration indicates a time-domain mode, or when the reflection coefficient measurement configuration indicates a time-domain mode, the IRS 510 may be configured to apply the set of different reflection coefficients during the time period indicated by the time-domain mode from 910A to N.

[0133] In response to receiving the network information from the first network node 102A at 904, the second network node 102B may transmit CLI measurement configuration to the second UE 104B at 908.

[0134] In 912, the second UE 104B can perform one or more CLI measurements corresponding to at least one of the different reflection coefficients in a set associated with the reflection coefficient measurement configuration, as referenced above. Figure 7 and Figure 8 As described.

[0135] At 914, the second UE 104B transmits one or more CLI measurements corresponding to at least one reflection coefficient to the second network node 102B. At 916, the second network node 102B can process the CLI measurements received from the second UE 104B. For example, as referenced above... Figure 7 and Figure 8 As described, the second network node 102B can select a reflection coefficient corresponding to the lowest CLI intensity. Alternatively or additionally, the second network node 102B can create a sorted list of reflection coefficients based on the corresponding CLI intensity. The second network node 102B can transmit the processed CLI measurement as CLI measurement information to the first network node 102A at 918.

[0136] At 920, the first network node 102A can identify a reflection coefficient from a set of different reflection coefficients associated with the CLI measurement information. In some aspects, the first network node 102A can obtain the reflection coefficient indicated by the CLI measurement information as corresponding to the lowest CLI intensity. Alternatively or additionally, the first network node 102A can identify the reflection coefficient based on a sorted list of reflection coefficients indicated by the CLI measurement information.

[0137] The first network node 102A can configure IRS 510 with the identified reflection coefficient at 922. Thus, IRS 510 can be configured to reflect a canceling signal to the second UE 104B that can mitigate the impact of CLI from the first UE 104A.

[0138] Therefore, the aspects presented herein provide a means for exchanging network information between network nodes (e.g., base stations 102A-102B) to manage CLI using an IRS (e.g., IRS 510). Furthermore, the aspects presented herein can reduce interference and improve resource efficiency compared to conventional communication systems.

[0139] Figure 10 This is a block diagram of an example device 1000 for wireless communication. Device 1000 may be a base station 102 (e.g., Figure 1 and Figure 3-9 The base station 102 may include a device 1000. In some aspects, the device 1000 may include a receiving component 1002 configured to receive wireless communication from another device (e.g., device 1008), a TX CLI management component 188 configured to manage CLI using an IRS, and a transmitting component 1006 configured to transmit wireless communication to another device (e.g., device 1008), and these components may be in communication with each other (e.g., via one or more buses or electrical connections). As shown, the device 1000 may use the receiving component 1002 and the transmitting component 1006 to communicate with another device 1008 (such as base station 102 or another wireless communication device).

[0140] In some respects, device 1000 can be configured to perform the functions described herein. Figure 1 and Figure 3-9 The described one or more operations. Alternatively or additionally, the apparatus 1000 may be configured to perform one or more processes described herein, such as Figure 11-15 Method 1100. In some aspects, apparatus 1000 may include the above combination. Figure 1 and Figure 3-9 One or more components of the described base station 102.

[0141] Receiver 1002 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 1008. Receiver 1002 may provide the received communications to one or more other components of device 1000 (such as TX CLI management component 188). In some aspects, receiver 1002 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signals to one or more other components. In some aspects, receiver 1002 may include a combination of the above. Figure 1 and Figure 3-9 The described base station 102 includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memories, or combinations thereof.

[0142] The transmission component 1006 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to the device 1008. In some aspects, the TX CLI management component 188 can generate communications and transmit the generated communications to the transmission component 1006 for transmission to the device 1008. In some aspects, the transmission component 1006 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and transmit the processed signals to the device 1008. In other aspects, the transmission component 1006 can include combinations of the above. Figure 1 and Figure 3-9 The described base station 102 includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof. In some aspects, the transmit component 1006 may be co-located with the receive component 1002 in a transceiver or transceiver assembly.

[0143] The TX CLI management component 188 can be configured to manage the CLI using an IRS. In some aspects, the TX CLI management component 188 may include a set of components, such as a generation component 1010 configured to generate a reflection coefficient measurement configuration, a transmission component 1015 configured to transmit network information, a receiving component 1020 configured to receive CLI measurement information, an identification component 1025 configured to identify a specific reflection coefficient from a set of different reflection coefficients, and a configuration component 1030 configured to configure the IRS 510.

[0144] Alternatively or additionally, the TX CLI management component 188 may further include: a selection component 1035 configured to select a specific reflectance from a set of different reflectances, a tracking component 1040 configured to track changes in CLI measurements, and a reconfiguration component 1045 configured to reconfigure a specific reflectance used by the IRS 510.

[0145] In other optional or additional aspects, this group of components can be separate from and distinct from the TX CLI management component 188. In other aspects, one or more components of this group of components may include... Figure 1 and Figure 3-9 The controller / processor (e.g., TX processor 316, RX processor 313, controller / processor 315), memory (e.g., memory 317), or a combination thereof, of the base station 102 described herein may be implemented therein. Alternatively or additionally, one or more components in this component set may be implemented at least partially as software stored in memory (such as memory 317). For example, a component (or a portion thereof) may be implemented as computer-executable instructions or code stored in a computer-readable medium (e.g., a non-transient computer-readable medium) and may be executed by a controller or processor to perform the function or operation of that component.

[0146] Figure 10 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 10 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 10 The two or more components shown can be implemented within a single component, or Figure 10 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 10 The set of components shown (e.g., one or more components) can perform actions described by Figure 1 and Figure 3-9 The other set of components shown in the diagram performs one or more functions.

[0147] Reference Figure 10-15 In operation, base station 102 may execute method 1100 for managing CLI. Method 1100 may be executed by base station 102 (which may include memory 317 and may be the entire base station 102 and / or one or more components of base station 102, such as TX CLI management component 188, TX processor 316, RX processor 313, and / or controller / processor 315)). Method 1100 may be executed by TX CLI management component 188 which is in communication with another base station 102 (e.g., RX CLI management component 189).

[0148] exist Figure 11 In block 1102, method 1100 includes generating a reflection coefficient measurement configuration for a smart reflective surface (IRS) controlled by a first network node to mitigate CLI caused by a first user equipment (UE) controlled by the first network node to a second UE controlled by a second network node. For example, in one aspect, base station 102, TX CLI management component 188, and / or generation component 1010 may be configured to, or may include, means for generating a reflection coefficient measurement configuration for an IRS 510 controlled by a first network node 102A to mitigate CLI caused by a UE 104A controlled by the first network node 102A to a second UE 104B controlled by a second network node 102B.

[0149] For example, the generation at box 1102 may include a reflection coefficient measurement configuration containing a set of reflection coefficients.

[0150] In some aspects, the generation at box 1102 may include determining a set of reflectance coefficients based on a predetermined set of reflectance coefficients (e.g., a codebook). In other aspects, the generation at box 1102 may include accessing a default set of reflectance coefficients for inclusion in a reflectance coefficient measurement configuration.

[0151] Furthermore, for example, the generation at box 1102 can be performed to select a set of reflection coefficients to be applied to IRS 510, while the second UE 104B performs CLI measurements for each reflection coefficient in the set of reflection coefficients.

[0152] In other optional or additional aspects, the generation at box 1102 may include: the reflectance measurement configuration including at least one of a time-domain mode of the set of different reflectances or an indication of the set of different reflectances, as referenced above. Figure 8 As described.

[0153] In other optional or additional aspects, the generation at block 1102 may include: the reflectance measurement configuration identifying a time-domain pattern of the set of different reflectances, and including at least one of: the time duration of use of each reflectance in the set of different reflectances by the IRS 510, the start time of use of a first reflectance in the set of different reflectances, the number of reflectances in the set of different reflectances, an indication of a value corresponding to each reflectance in the set of different reflectances, or a time-domain pattern indicator identifying the time-domain pattern, as referenced above. Figure 8 As described.

[0154] In other optional or additional aspects, the generation at block 1102 may include: at least one of the time duration or the start time being indicated relative to a time slot of a transmission frame, and the time-domain pattern further includes a subcarrier spacing, as referenced above. Figure 8 As described.

[0155] In other optional or additional aspects, the generation at box 1102 may include: the reflectance measurement configuration including each reflectance in the set of different reflectances, as referenced above. Figure 8 As described.

[0156] exist Figure 11 Block 1104, method 1100 includes transmitting network information including the reflection coefficient measurement configuration to a second network node and to an IRS. For example, in one aspect, base station 102, TX CLI management component 188 and / or transmission component 1015 may be configured to, or may include, means for transmitting network information including the reflection coefficient measurement configuration to a second network node 102B and to an IRS 510.

[0157] For example, the transmission at box 1104 may include transmitting network information, including the reflection coefficient measurement configuration generated at box 1102, to the second network node 102B and to the IRS 510.

[0158] In some aspects, the transmission at block 1104 may include causing the second network node 102B to transmit a CLI measurement configuration to the second UE for the second UE 104B to perform one or more CLI measurements corresponding to at least one of a set of different reflection coefficients associated with the reflection coefficient measurement configuration.

[0159] In other respects, the transmission at block 1104 may include causing the IRS 510 to switch the reflection coefficient configuration as indicated by the network information, such that the second UE 104B can perform one or more CLI measurements corresponding to at least one of the different reflection coefficients in the set associated with the reflection coefficient measurement configuration.

[0160] Furthermore, for example, the transmission at block 1104 can be performed to configure IRS 510 and the second UE 104B to perform CLI measurements corresponding to the reflection coefficients indicated by the network information. CLI measurements can be used to identify reflection coefficients that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0161] exist Figure 11In block 1106, method 1100 includes receiving CLI measurement information associated with the second UE and corresponding to the reflection coefficient measurement configuration from a second network node in response to transmitting the network information. For example, in one aspect, base station 102, TX CLI management component 188, and / or receiving component 1020 may be configured or may include means for receiving CLI measurement information associated with the second UE 104B and corresponding to the reflection coefficient measurement configuration from a second network node 102B in response to transmitting the network information.

[0162] For example, receiving at block 1106 may include receiving CLI measurement information from the second network node 102B corresponding to one or more CLI measurements performed by the second UE 104B. In some aspects, the CLI measurements may indicate the CLI intensity corresponding to each reflection coefficient in the set of reflection coefficients included in the network information.

[0163] In some respects, CLI measurements may be based on one or more measurements of a reference signal received by the second UE 104B, such as Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Signal-to-Noise Ratio (SNR), and Signal-to-Interference Plus Noise Ratio (SINR).

[0164] Furthermore, for example, reception at block 1106 can be performed such that the first network node 102A can identify a specific reflection coefficient that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0165] exist Figure 11 Block 1108, method 1100 includes identifying a specific reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration based on the CLI measurement information. For example, in one aspect, base station 102, TX CLI management component 188, and / or identification component 1025 may be configured to, or may include, means for identifying a specific reflection coefficient from a set of different reflection coefficients associated with the reflection coefficient measurement configuration based on the CLI measurement information.

[0166] For example, the identifier at box 1108 may include identifying the reflectance coefficient indicated by the CLI measurement information received at box 1106 as that specific reflectance coefficient. That is, the second network node 102B may have identified the specific reflectance coefficient from the set of different reflectance coefficients associated with the reflectance coefficient measurement configuration based on the CLI measurement information.

[0167] In some aspects, the identifier at box 1108 may include identifying a particular reflectance coefficient based on CLI measurement information (e.g., CLI intensity) received at box 1106.

[0168] In addition, for example, the identifier at box 1108 can be executed to determine a specific reflection coefficient that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0169] exist Figure 11 In block 1108, method 1100 includes configuring the IRS using the specific reflection coefficient. For example, in one aspect, base station 102, TX CLI management component 188, and / or configuration component 1030 may be configured to, or may include, means for configuring the IRS 510 using the specific reflection coefficient.

[0170] For example, the configuration at block 1110 may include transmitting a specific reflectance coefficient identified at block 1108 to the IRS 510. In some aspects, the configuration at block 1110 may include applying a configuration to the IRS 510 that includes that specific reflectance coefficient.

[0171] Furthermore, for example, the configuration at block 1110 can be executed to configure IRS 510 to create an alternative propagation path for guiding signals to the second UE 104B, which can mitigate (e.g., reduce) the impact of CLI signals transmitted from the first UE 104A on the second UE 104B. Therefore, the aspects presented herein provide for exchanging network information between network nodes (e.g., base stations 102A-102B) to manage CLI using an IRS (e.g., IRS 510). Furthermore, the aspects presented herein can reduce interference and improve resource efficiency compared to conventional communication systems.

[0172] Reference Figure 12 In an optional or additional aspect that can be combined with any other aspect, at block 1202, method 1100 may further include receiving a request for reflection coefficient measurement configuration from a second network node by a first network node. For example, in one aspect, base station 102, TX CLI management component 188, and / or receiving component 1020 may be configured to, or may include, means for receiving a request for reflection coefficient measurement configuration from a second network node 102B by a first network node 102A.

[0173] For example, receiving at box 1202 may include receiving from the second network node 102B a request to initiate network information exchange to use the IRS to manage the CLI.

[0174] In some aspects, receiving at block 1202 may include receiving a requested reflection coefficient measurement configuration generated by the second network node 102B.

[0175] Furthermore, for example, the reception at block 1202 can be performed to enable the second network node 102B controlling the second UE 104B to initiate network information exchange to manage the CLI at the second UE 104B using IRS 510.

[0176] In this optional or additional aspect, at block 1204, the generation of a reflection coefficient measurement configuration for the IRS 510 controlled by the first network node 102A in block 1102 of method 1100 to mitigate CLI of the second UE 104B controlled by the second network node 102B caused by the first UE 104A controlled by the first network node 102A includes: generating the reflection coefficient measurement configuration in response to receiving the request. For example, in one aspect, base station 102, TX CLI management component 188, and / or generation component 1010 may be configured to or may include means for generating the reflection coefficient measurement configuration in response to receiving the request.

[0177] For example, the generation at box 1204 may include generating the reflectance measurement configuration in response to receiving the request, as described above with reference to box 1102.

[0178] In some aspects, the generation at block 1204 may include generating the reflectance measurement configuration based on the requested reflectance measurement configuration included in the request received at block 1202.

[0179] Furthermore, for example, the generation at box 1204 can be performed to select a set of reflection coefficients to be applied to IRS 510, while the second UE 104B performs CLI measurements for each reflection coefficient in the set of reflection coefficients.

[0180] Reference Figure 13 In an optional or additional aspect that can be combined with any other aspect, at block 1302, receiving CLI measurement information associated with the second UE 104B and corresponding to the reflection coefficient measurement configuration from the second network node 102B in response to transmitting the network information in block 1106 of method 1100 includes: receiving an indication of a specific reflection coefficient of the lowest CLI measurement among CLI measurements corresponding to each of the different reflection coefficients in the set of different reflection coefficients associated with the reflection coefficient measurement configuration performed by the second UE. For example, in one aspect, base station 102, TX CLI management component 188, and / or receiving component 1020 may be configured or may include receiving an indication of a specific reflection coefficient of the lowest CLI measurement among CLI measurements corresponding to each of the different reflection coefficients in the set of different reflection coefficients associated with the reflection coefficient measurement configuration performed by the second UE 104B.

[0181] For example, receiving at block 1302 may include receiving CLI measurement information, which includes an indication of a specific reflection coefficient that has been selected by the second network node 102B. The specific reflection coefficient selected by the network node 102B may have the lowest CLI measurement among the CLI measurements corresponding to each of the different reflection coefficients in the set associated with the reflection coefficient measurement configuration performed by the second UE 104B.

[0182] In some aspects, receiving at block 1302 may include identifying the reflectance coefficient indicated by the CLI measurement information as a specific reflectance coefficient for configuring the IRS 510.

[0183] Furthermore, for example, reception at block 1302 can be performed to receive an indication of a specific reflection coefficient for configuring the IRS 510.

[0184] In an optional or additional aspect that can be combined with any other aspect, in block 1304, receiving CLI measurement information associated with the second UE 104B and corresponding to the reflection coefficient measurement configuration from the second network node 102B in response to transmitting the network information in block 1106 of method 1100 includes receiving a set of different reflection coefficients ordered in order of corresponding CLI intensities. For example, in one aspect, base station 102, TX CLI management component 188, and / or receiving component 1020 may be configured to, or may include, means for receiving the set of different reflection coefficients ordered in order of corresponding CLI intensities.

[0185] For example, receiving at block 1304 may include identifying a specific reflection coefficient for configuring the IRS 510 based on a set of different reflection coefficients ordered according to their corresponding CLI intensities. In some aspects, receiving at block 1304 may include identifying the reflection coefficient corresponding to the lowest CLI intensity as a specific reflection coefficient for configuring the IRS 510.

[0186] In addition, for example, reception at block 1304 can be performed to receive CLI measurement information for configuring a specific reflection coefficient of IRS 510 to identify the impact of CLI from the first UE 104A on the second UE 104B.

[0187] In an optional or additional aspect that can be combined with any other aspect, at block 1306, receiving CLI measurement information associated with the second UE 104B and corresponding to the reflection coefficient measurement configuration from the second network node 102B in response to transmitting the network information includes: receiving CLI measurements corresponding to the direct propagation path between the first UE and the second UE for each reflection coefficient in the set of different reflection coefficients. For example, in one aspect, base station 102, TX CLI management component 188, and / or receiving component 1020 may be configured to, or may include, means for receiving CLI measurements corresponding to the direct propagation path between the first UE 104A and the second UE 104B for each reflection coefficient in the set of different reflection coefficients.

[0188] For example, reception at block 1306 may include performing processing (e.g., spatial analysis) based on CLI measurements corresponding to the direct propagation path between the first UE 104A and the second UE 104B to identify specific reflection coefficients for configuring the IRS 510.

[0189] In addition, for example, reception at block 1306 can be performed to receive CLI measurement information for configuring a specific reflection coefficient of IRS 510 to identify the impact of CLI from the first UE 104A on the second UE 104B.

[0190] In an optional or additional aspect that can be combined with any other aspect, at block 1308, receiving CLI measurement information associated with the second UE 104B and corresponding to the reflection coefficient measurement configuration from the second network node 102B in response to transmitting the network information in block 1106 of method 1100 includes: receiving CLI measurements for each reflection coefficient in the set of different reflection coefficients, corresponding to the indirect propagation path between the first UE and the second UE via the IRS. For example, in one aspect, base station 102, TX CLI management component 188, and / or receiving component 1020 may be configured to, or may include, means for receiving CLI measurements for each reflection coefficient in the set of different reflection coefficients, corresponding to the indirect propagation path between the first UE 104A and the second UE 104B via the IRS 510.

[0191] For example, reception at block 1308 may include performing processing (such as spatial analysis) based on CLI measurements corresponding to the indirect propagation path between the first UE 104A and the second UE 104B via the IRS510 to identify specific reflection coefficients for configuring the IRS510.

[0192] In addition, for example, reception at block 1308 can be performed to receive CLI measurement information for configuring a specific reflection coefficient of IRS 510 to identify the impact of CLI from the first UE 104A on the second UE 104B.

[0193] Reference Figure 14 In an optional or additional aspect that can be combined with any other aspect, in block 1402, identifying a specific reflection coefficient from the set of different reflection coefficients associated with the reflection coefficient measurement configuration based on the CLI measurement information in block 1108 of method 1100 includes selecting a specific reflection coefficient from the set of different reflection coefficients that has a corresponding CLI measurement that satisfies the CLI measurement criteria. For example, in one aspect, base station 102, TX CLI management component 188, and / or selection component 1035 may be configured to or may include means for selecting a specific reflection coefficient from the set of different reflection coefficients that has a corresponding CLI measurement that satisfies the CLI measurement criteria.

[0194] For example, the selection at box 1402 may include selecting from the set of different reflection coefficients the reflection coefficient having the corresponding CLI measurement that is the lowest (e.g., minimum) CLI measurement. That is, the CLI measurement criterion may include selecting the lowest (e.g., minimum) CLI measurement. Alternatively or additionally, the CLI measurement criterion may include selecting the average CLI measurement. In other aspects, the CLI measurement criterion may include selecting the reflection coefficient that minimizes the CLI measurements for multiple UEs.

[0195] In addition, for example, the selection at box 1402 can be performed to identify a specific reflection coefficient for configuring IRS 510 that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0196] Reference Figure 15 In an optional or additional aspect that can be combined with any other aspect, method 1100 may further include tracking changes in CLI measurements from the second UE in response to repeated use of the reflection coefficient measurement configuration. For example, in one aspect, base station 102, TX CLI management component 188, and / or tracking component 1040 may be configured to, or may include, means for tracking changes in CLI measurements from the second UE 104B in response to repeated use of the reflection coefficient measurement configuration.

[0197] For example, the tracking at box 1502 may include repeating the network information exchange procedure to obtain an updated CLI measurement corresponding to the second UE 104B. In some aspects, the tracking at box 1502 may include identifying new reflection coefficients for configuring IRS 510.

[0198] Furthermore, for example, tracking at box 1502 can be performed to respond to dynamic changes in CLI measurements that can affect the effectiveness of CLI mitigation performed by IRS 510.

[0199] In this optional and additional aspect, at block 1504, method 1100 may further include reconfiguring a specific reflectance coefficient used by the IRS in response to detecting a change greater than a change threshold in these CLI measurements. For example, in one aspect, base station 102, TX CLI management component 188, and / or reconfiguration component 1045 may be configured to, or may include, means for reconfiguring a specific reflectance coefficient used by the IRS 510 in response to detecting a change greater than a change threshold in these CLI measurements.

[0200] For example, reconfiguration at box 1504 may include reconfiguring IRS510 using the reflectance coefficient identified at box 1502.

[0201] Furthermore, for example, reconfiguration at box 1504 can be performed to respond to dynamic changes in CLI measurements that could affect the effectiveness of CLI mitigation by the IRS 510.

[0202] Figure 16 This is a block diagram of an example device 1600 for wireless communication. Device 1600 may be a base station 102 (e.g., Figure 1 and Figure 3-9 The base station 102 may include a device 1600. In some aspects, the device 1600 may include a receiving component 1602 configured to receive wireless communication from another device (e.g., device 1608), an RX CLI management component 189 configured to manage CLI using an IRS, and a transmitting component 1606 configured to transmit wireless communication to another device (e.g., device 1608), and these components may be in communication with each other (e.g., via one or more buses or electrical connections). As shown, the device 1600 may use the receiving component 1602 and the transmitting component 1606 to communicate with another device 1608 (such as base station 102 or another wireless communication device).

[0203] In some respects, device 1600 can be configured to perform the functions described herein. Figure 1 and Figure 3-9 The described one or more operations. Alternatively or additionally, the apparatus 1600 may be configured to perform one or more processes described herein, such as Figure 17-21 Method 1700. In some aspects, apparatus 1600 may include the above combination. Figure 1 and Figure 3-9 One or more components of the described base station 102.

[0204] Receiver 1602 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 1608. Receiver 1602 may provide the received communications to one or more other components of device 1600 (such as RX CLI management component 189). In some aspects, receiver 1602 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signals to one or more other components. In some aspects, receiver 1602 may include a combination of the above. Figure 1 and Figure 3-9 The described base station 102 includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memories, or combinations thereof.

[0205] The transmission component 1606 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to the device 1608. In some aspects, the RX CLI management component 189 can generate communications and transmit the generated communications to the transmission component 1606 for transmission to the device 1608. In some aspects, the transmission component 1606 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and transmit the processed signals to the device 1608. In some aspects, the transmission component 1606 can include a combination of the above. Figure 1 and Figure 3-9 The described base station 102 includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof. In some aspects, the transmit component 1606 may be co-located with the receive component 1602 in a transceiver or transceiver assembly.

[0206] The RX CLI management component 189 can be configured to use an IRS to manage the CLI. In some aspects, the RX CLI management component 189 may include a set of components, such as a receiving component 1610 configured to receive network information and CLI measurements, and a transport component 1615 configured to transmit CLI measurement configuration and CLI measurement information.

[0207] Additionally or alternatively, the RX CLI management component 189 may further include a selection component 1620 and a sorting component 1625, wherein the selection component 1620 is configured to select a specific reflection coefficient from a set of different reflection coefficients, and the sorting component 1625 is configured to sort the set of these different reflection coefficients.

[0208] In other optional or additional aspects, this group of components can be separate from and distinct from the RX CLI management component 189. In other aspects, one or more components of this group of components may include... Figure 1 and Figure 3-9 The controller / processor (e.g., TX processor 316, RX processor 313, controller / processor 315), memory (e.g., memory 317), or a combination thereof, of the base station 102 described herein may be implemented therein. Alternatively or additionally, one or more components in this component set may be implemented at least partially as software stored in memory (such as memory 317). For example, a component (or a portion thereof) may be implemented as computer-executable instructions or code stored in a computer-readable medium (e.g., a non-transient computer-readable medium) and may be executed by a controller or processor to perform the function or operation of that component.

[0209] Figure 16 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 16 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 16 The two or more components shown can be implemented within a single component, or Figure 16 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 16 The set of components shown (e.g., one or more components) can perform actions described by Figure 1 and Figure 3-9 The other set of components shown in the diagram performs one or more functions.

[0210] Reference Figure 16-21 In operation, base station 102 may execute method 1700 for managing CLI using IRS. Method 1700 may be executed by base station 102 (which may include memory 317 and may be the entire base station 102 and / or one or more components of base station 102, such as RX CLI management component 189, TX processor 316, RX processor 313, and / or controller / processor 315)). Method 1700 may be executed by RX CLI management component 189 which is in communication with another base station 102 (e.g., TX CLI management component 188).

[0211] exist Figure 17In block 1702, method 1700 includes receiving network information from a first network node including a reflection coefficient measurement configuration for a smart reflective surface (IRS) controlled by the first network node to mitigate CLI caused by a first user equipment (UE) controlled by the first network node to a second UE controlled by a second network node. For example, in one aspect, base station 102, RX CLI management component 189, and / or receiving component 1610 may be configured or may include means for receiving network information including a reflection coefficient measurement configuration from a first network node 102A for an IRS 510 controlled by the first network node 102A to mitigate CLI caused by a first UE 104A controlled by the first network node 102A to a second UE 104B controlled by the second network node 102B.

[0212] For example, receiving at block 1702 may include generating a CLI measurement configuration for the second UE 104B to perform one or more CLI measurements corresponding to at least one of a set of different reflection coefficients associated with the reflection coefficient measurement configuration.

[0213] In other optional or additional aspects, the reception at block 1702 may include at least one of the following: the reflectance measurement configuration including a time-domain mode of the set of different reflectances or an indication of the set of different reflectances.

[0214] In other optional or additional aspects, the reception at block 1702 may include: the reflectance measurement configuration identifying a time-domain mode of the set of different reflectances, and includes at least one of: the time duration of use of each reflectance in the set of different reflectances by IRS 510, the start time of use of a first reflectance in the set of different reflectances, the number of reflectances in the set of different reflectances, an indication of a value corresponding to each reflectance in the set of different reflectances, or a time-domain mode indicator identifying the time-domain mode.

[0215] In other optional or additional aspects, receiving at block 1702 may include: the reflection coefficient measurement configuration configuring the second UE 104B to perform CLI measurement filtering for each of the different reflection coefficients in the set indicated by the reflection coefficient measurement configuration.

[0216] Furthermore, for example, the reception at block 1702 can be performed to configure the second UE 104B to perform a CLI measurement corresponding to the reflection coefficient indicated by the network information. The CLI measurement can be used to identify the reflection coefficient that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0217] In block 1704 of block 17, method 1700 includes transmitting a CLI measurement configuration to a second UE for the second UE to perform one or more CLI measurements corresponding to at least one reflection coefficient in a set of different reflection coefficients associated with the reflection coefficient measurement configuration. For example, in one aspect, base station 102, RX CLI management component 189, and / or transmission component 1615 may be configured or may include means for transmitting a CLI measurement configuration to a second UE 104B for the second UE 104B to perform one or more CLI measurements corresponding to at least one reflection coefficient in a set of different reflection coefficients associated with the reflection coefficient measurement configuration.

[0218] For example, the transmission at block 1704 may include transmitting the CLI measurement configuration generated at block 1702 to the second UE 104B to configure the second UE 104B to perform the one or more CLI measurements, as referenced above. Figure 7 and Figure 8 As described.

[0219] Furthermore, for example, the transmission at block 1704 can be performed to configure the second UE 104B to perform a CLI measurement corresponding to the reflection coefficient indicated by the network information. The CLI measurement can be used to identify the reflection coefficient that can mitigate the impact of the CLI from the first UE 104A on the second UE 104B.

[0220] exist Figure 17 In block 1706, method 1700 includes receiving one or more CLI measurements corresponding to the CLI measurement configuration from a second UE. For example, in one aspect, base station 102, RX CLI management component 189, and / or receiving component 1610 may be configured to or may include means for receiving one or more CLI measurements corresponding to the CLI measurement configuration from the second UE.

[0221] For example, receiving at block 1706 may include receiving one or more CLI measurement reports from the second UE 104B in response to the second UE 104B being configured to perform one or more CLI measurements based on reflection coefficients indicated by the network information. The CLI measurement reports may indicate the CLI strength corresponding to each reflection coefficient.

[0222] Furthermore, for example, reception at block 1706 can be performed to obtain CLI measurement information that can be used to identify the reflection coefficient that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0223] exist Figure 17In block 1708, method 1700 includes transmitting CLI measurement information corresponding to the one or more CLI measurements to a first network node. For example, in one aspect, base station 102, RX CLI management component 189, and / or transmission component 1615 may be configured or may include means for transmitting CLI measurement information corresponding to the one or more CLI measurements to the first network node 102A.

[0224] For example, the transmission at box 1708 may include processing one or more CLI measurement reports received from the second UE 104B, as referenced above. Figures 7 to 9 As described.

[0225] Furthermore, for example, the transmission at block 1708 can be performed such that the first network node 102A can identify a specific reflection coefficient that can mitigate the impact of CLI from the first UE 104A on the second UE 104B. Therefore, the aspects presented herein provide for exchanging network information between network nodes (e.g., base stations 102A-102B) to manage CLIs using an IRS (e.g., IRS 510). Moreover, the aspects presented herein can reduce interference and improve resource efficiency compared to conventional communication systems.

[0226] Reference Figure 18 In an optional or additional aspect that can be combined with any other aspect, at block 1802, method 1700 may further include transmitting a request for a reflection coefficient measurement configuration to the first network node. For example, in one aspect, base station 102, RXCLI management component 189, and / or transmission component 1615 may be configured to, or may include, means for transmitting a request for a reflection coefficient measurement configuration to the first network node 102A.

[0227] For example, the transmission at box 1802 may include determining to initiate a network information exchange for using the IRS to manage the CLI. In some aspects, the transmission at box 1802 may include determining that a performance degradation of the second UE 104B may be caused by the CLI. Alternatively or additionally, the transmission at box 1802 may include determining that the second UE 104B may be located near (e.g., adjacent to) the IRS 510.

[0228] In other optional or additional aspects, the transmission of block 1802 may include generating the requested reflectance measurement configuration for use in the network information exchange.

[0229] Furthermore, for example, the transmission at box 1802 can be executed to request the first network node 102A to initiate network information exchange for using the IRS to manage the CLI.

[0230] In this optional or additional aspect, at block 1804, receiving network information from block 1702 of method 1700, including a reflection coefficient measurement configuration for the IRS 510 controlled by the first network node 102A to mitigate the CLI of the second UE 104B controlled by the second network node 102B caused by the first UE 104A controlled by the first network node 102A, includes receiving the reflection coefficient measurement configuration in response to transmitting the request. For example, in one aspect, base station 102, RXCLI management component 189, and / or receiving component 1610 may be configured or may include means for receiving the reflection coefficient measurement configuration in response to transmitting the request.

[0231] For example, receiving at block 1804 may include receiving a reflectance measurement configuration based on the requested reflectance measurement configuration included in the request, in response to transmitting the request.

[0232] In some aspects, receiving at box 1804 may include generating a CLI measurement configuration based on the requested reflectance coefficient measurement configuration.

[0233] Furthermore, for example, the reception at box 1804 can be performed to continue the network information exchange initiated by the second network node 102B at box 1802.

[0234] Reference Figure 19 In an optional or additional aspect that can be combined with any other aspect, at block 1902, method 1700 may further include selecting a specific reflection coefficient from the set of different reflection coefficients that has a corresponding CLI measurement that satisfies the CLI measurement criteria. For example, in one aspect, base station 102, RX CLI management component 189, and / or selection component 1620 may be configured to, or may include, means for selecting a specific reflection coefficient from the set of different reflection coefficients that has a corresponding CLI measurement that satisfies the CLI measurement criteria.

[0235] For example, the selection at box 1902 may include selecting from the set of different reflection coefficients the reflection coefficient having the corresponding CLI measurement that is the lowest (e.g., minimum) CLI measurement. That is, the CLI measurement criterion may include selecting the lowest (e.g., minimum) CLI measurement. Alternatively or additionally, the CLI measurement criterion may include selecting the average CLI measurement. In other aspects, the CLI measurement criterion may include selecting the reflection coefficient that minimizes the CLI measurements for multiple UEs.

[0236] In addition, for example, the selection at box 1902 can be performed to identify a specific reflection coefficient for configuring IRS 510 that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0237] In this optional or additional aspect, at block 1904, transmitting CLI measurement information corresponding to the one or more CLI measurements to the first network node in block 1708 of method 1700 includes transmitting an indication of the specific reflection coefficient. For example, in one aspect, base station 102, RX CLI management component 189, and / or transmission component 1615 may be configured to, or may include, means for transmitting an indication of the specific reflection coefficient.

[0238] For example, the transmission at box 1904 may include transmitting CLI measurement information including an indication of a specific reflectance coefficient selected at box 1902.

[0239] In addition, for example, a transmission at box 1904 may be performed to identify a specific reflection coefficient for configuring IRS 510 that can mitigate the impact of CLI from first UE 104A on second UE 104B.

[0240] Reference Figure 20 In an optional or additional aspect that can be combined with any other aspect, at block 2002, method 1700 may further include sorting the set of different reflection coefficients in order of their corresponding CLI intensities. For example, in one aspect, base station 102, RX CLI management component 189, and / or sorting component 1625 may be configured to, or may include, means for sorting the set of different reflection coefficients in order of their corresponding CLI intensities.

[0241] For example, the sorting at box 2002 may include sorting the set of different reflectance coefficients in ascending or descending order according to the corresponding CLI intensity.

[0242] In addition, for example, the sorting at box 2002 can be performed to identify specific reflection coefficients for configuring IRS 510 that can mitigate the impact of CLI from first UE 104A on second UE 104B.

[0243] In this optional or additional aspect, at block 2004, the transmission of CLI measurement information corresponding to the one or more CLI measurements to the first network node in block 1708 of method 1700 includes transmitting a sorted set of the different reflection coefficients. For example, in one aspect, base station 102, RX CLI management component 189, and / or transmission component 1615 may be configured to, or may include, means for transmitting the sorted set of the different reflection coefficients.

[0244] For example, the transmission at box 2004 may include: transmitting CLI measurement information that includes the sorted set of different reflectance coefficients created at box 2002.

[0245] In addition, for example, a transmission at box 2004 may be performed to identify a specific reflection coefficient for configuring IRS 510 that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0246] Reference Figure 21 In an optional or additional aspect that can be combined with any other aspect, at block 2102, the transmission of CLI measurement information corresponding to the one or more CLI measurements to the first network node at block 1708 of method 1700 includes: transmitting a first set of CLI measurements corresponding to a direct propagation path between the first UE and the second UE for each of the different sets of reflection coefficients, and a second set of CLI measurements corresponding to an indirect propagation path between the first UE and the second UE via the IRS for each of the different sets of reflection coefficients. For example, in one aspect, base station 102, RX CLI management component 189, and / or transmission component 1615 may be configured to, or may include, means for transmitting the first set of CLI measurements corresponding to a direct propagation path between the first UE 104A and the second UE 104B for each of the different sets of reflection coefficients, and the second set of CLI measurements corresponding to an indirect propagation path between the first UE 104A and the second UE 104B via the IRS 510 for each of the different sets of reflection coefficients.

[0247] For example, the transmission at block 2102 may include configuring the second UE 104B to perform a first CLI measurement set corresponding to a direct propagation path between the first UE 104A and the second UE 104B. Alternatively or additionally, the transmission at block 2102 may include configuring the second UE 104B to perform a second CLI measurement set corresponding to an indirect propagation path between the first UE 104A and the second UE 104B.

[0248] In addition, for example, a transmission at box 2102 may be performed to identify a specific reflection coefficient for configuring IRS 510 that can mitigate the impact of CLI from the first UE 104A on the second UE 104B.

[0249] Examples of implementations are described in the following numbered clauses.

[0250] 1. A method for managing cross-link interference (CLI) by a first network node of a wireless communication network, comprising:

[0251] Generate a reflection coefficient measurement configuration for a smart reflective surface (IRS) controlled by the first network node to mitigate CLI caused by a first user equipment (UE) controlled by the first network node to a second UE controlled by a second network node;

[0252] Transmit network information, including the reflectance measurement configuration, to the second network node and to the IRS;

[0253] In response to transmitting the network information, CLI measurement information associated with the second UE and corresponding to the reflection coefficient measurement configuration is received from the second network node;

[0254] Based on the CLI measurement information, a specific reflection coefficient is identified from a set of different reflection coefficients associated with the reflection coefficient measurement configuration; and

[0255] The IRS is configured using this specific reflectance coefficient.

[0256] 2. The method of Clause 1, wherein the reflectance measurement configuration includes at least one of a time-domain mode of the set of different reflectances or an indication of the set of different reflectances.

[0257] 3. The method of clause 1 or 2, wherein the reflectance measurement configuration identifies the time-domain pattern of the set of different reflectances and includes at least one of the following:

[0258] The duration of time by which the IRS uses each of the different reflectance coefficients in the set;

[0259] The start time of the first reflection coefficient in the set of different reflection coefficients;

[0260] The number of reflection coefficients in the set of different reflection coefficients;

[0261] An indication of the value corresponding to each reflectance coefficient in the set of different reflectance coefficients; or

[0262] The time-domain mode indicator that identifies this time-domain mode.

[0263] 4. The method of any of the preceding clauses 1 to 3, wherein at least one of the time duration or the start time is indicated relative to a time slot of a transmission frame, and wherein the time-domain pattern further includes a subcarrier interval.

[0264] 5. The method as described in any of the preceding clauses 1 to 4, wherein the reflectance measurement configuration includes each reflectance in the set of different reflectances.

[0265] 6. The methods described in any of the preceding clauses 1 to 5 further include:

[0266] The first network node receives a request from the second network node to configure the reflection coefficient measurement; and

[0267] The generation of the reflection coefficient measurement configuration includes generating the reflection coefficient measurement configuration in response to receiving the request.

[0268] 7. The method of any of the preceding clauses 1 to 6, wherein receiving a request for the reflectance measurement configuration includes: receiving the requested reflectance measurement configuration generated by the second network node.

[0269] 8. The method as described in any of the preceding clauses 1 to 7, wherein receiving the CLI measurement information includes at least one of the following:

[0270] Receive an indication of a specific reflection coefficient of the lowest CLI measurement among the CLI measurements corresponding to each of the different reflection coefficients in the set associated with the reflection coefficient measurement configuration performed by the second UE; or

[0271] Receive the set of different reflection coefficients sorted in order of their corresponding CLI intensities;

[0272] Receive CLI measurements for each reflection coefficient in the set of different reflection coefficients, corresponding to the direct propagation path between the first UE and the second UE; or

[0273] Receive CLI measurements for each reflection coefficient in the set of different reflection coefficients, corresponding to the indirect propagation path between the first UE and the second UE via the IRS.

[0274] 9. As in any of the preceding clauses 1 to 8, wherein identifying the particular reflectance includes:

[0275] Select a specific reflection coefficient from the set of different reflection coefficients that has a corresponding CLI measurement that satisfies the CLI measurement criteria.

[0276] 10. The methods described in any of the preceding clauses 1 to 8 further include:

[0277] In response to the reuse of this reflection coefficient measurement configuration, changes in CLI measurements from a second UE are tracked; and

[0278] In response to the detection of changes in these CLI measurements that exceed a change threshold, the specific reflectance coefficients used by the IRS are reconfigured.

[0279] 11. An apparatus for managing CLI by a first network node of a wireless communication network, comprising: a memory and a processor communicatively coupled to the memory, the processor being configured to perform one or more methods of any of Clauses 1 to 10.

[0280] 12. An apparatus for managing CLI by a first network node of a wireless communication network, comprising: means for performing one or more methods of any of clauses 1 to 10.

[0281] 13. A computer-readable medium storing instructions for managing a CLI by a first network node of a wireless communication network, the instructions being executable by a processor to perform one or more methods of any of clauses 1 to 10.

[0282] 14. A method for managing CLI by a second network node of a wireless communication network, comprising:

[0283] Receive network information from a first network node including a reflection coefficient measurement configuration for an IRS controlled by the first network node to mitigate CLI caused by a first UE controlled by the first network node to a second UE controlled by the second network node.

[0284] The CLI measurement configuration is transmitted to the second UE for the second UE to perform one or more CLI measurements corresponding to at least one of the different reflection coefficients in the set associated with the reflection coefficient measurement configuration;

[0285] Receive one or more CLI measurements corresponding to the CLI measurement configuration from the second UE; and

[0286] The CLI measurement information corresponding to the one or more CLI measurements is transmitted to the first network node.

[0287] 15. The method of Clause 14, wherein the reflectance measurement configuration includes at least one of a time-domain mode of the set of different reflectances or an indication of the set of different reflectances.

[0288] 16. The method of clause 14 or 15, wherein the reflectance measurement configuration identifies the time-domain pattern of the set of different reflectances and includes at least one of the following:

[0289] The duration of time by which the IRS uses each of the different reflectance coefficients in the set;

[0290] The start time of the first reflection coefficient in the set of different reflection coefficients;

[0291] The number of reflection coefficients in the set of different reflection coefficients;

[0292] An indication of the value corresponding to each reflectance coefficient in the set of different reflectance coefficients; or

[0293] The time-domain mode indicator that identifies this time-domain mode.

[0294] 17. The method of any of the preceding clauses 14 to 16, wherein the reflection coefficient measurement configuration configures the second UE to perform CLI measurement filtering for each of the different reflection coefficients in the set indicated by the reflection coefficient measurement configuration.

[0295] 18. The methods described in any of the preceding clauses 14 to 17 further include:

[0296] Send a request to the first network node to configure the reflection coefficient measurement; and

[0297] The configuration for receiving the reflection coefficient measurement is in response to transmitting the request.

[0298] 19. The methods described in any of the preceding clauses 14 to 18 further include:

[0299] Select from the set of different reflectance coefficients a specific reflectance coefficient that satisfies the CLI measurement criteria for the corresponding CLI measurement; and

[0300] The transmission of the CLI measurement information includes transmitting an indication of that specific reflectance coefficient; or

[0301] The set of different reflectance coefficients is sorted according to the order of their corresponding CLI intensities; and the transmission of the CLI measurement information includes transmitting the sorted set of different reflectance coefficients; or

[0302] The transmission of the CLI measurement information includes: transmitting a first CLI measurement set corresponding to the direct propagation path between the first UE and the second UE for each reflection coefficient in the set of different reflection coefficients, and a second CLI measurement set corresponding to the indirect propagation path between the first UE and the second UE via the IRS for each reflection coefficient in the set of different reflection coefficients.

[0303] 20. An apparatus for managing a CLI by a second network node of a wireless communication network, comprising: a memory and a processor communicatively coupled to the memory, the processor being configured to perform one or more methods of any of clauses 14 to 19.

[0304] 21. An apparatus for managing CLI by a second network node of a wireless communication network, comprising: means for performing one or more methods of any of clauses 14 to 19.

[0305] 22. A computer-readable medium storing instructions for managing a CLI by a second network node of a wireless communication network, the instructions being executable by a processor to perform one or more methods of any of clauses 14 to 19.

[0306] It should be understood that the specific order or hierarchy of the boxes in the disclosed process / flowcharts is an explanation of exemplary methods. It should be understood that the specific order or hierarchy of the boxes in these process / flowcharts can be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims present the elements of the various boxes in an exemplary order and are not intended to be limited to the specific order or hierarchy presented.

[0307] Although the foregoing discussion is illustrative of aspects and / or embodiments, it should be noted that various changes and modifications may be made herein without departing from the scope of the aspects and / or embodiments described as defined in the appended claims. Furthermore, while elements of the described aspects and / or embodiments may be described or claimed in the singular, plural forms are also contemplated unless explicitly stated otherwise. Additionally, all or part of any aspect and / or embodiment may be used in conjunction with all or part of any other aspect and / or embodiment unless otherwise stated.

[0308] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will readily be understood by those skilled in the art, and the universal principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be granted the full scope consistent with the language of the claims, wherein references to the singular form of an element, unless specifically stated otherwise, are not intended to mean “one and only one,” but rather “one or more.” Terms such as “if,” “when,” and “at the time of” should be interpreted as meaning “under this condition,” rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., “when”) do not imply an immediate action in response to the occurrence of an action or during the occurrence of an action, but only imply that an action will occur when a condition is met, without requiring a specific or immediate temporal constraint for the action to occur. The term “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as superior to or overriding other aspects. Unless specifically stated otherwise, the term “some / a” refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, and may include multiple A, multiple B, or multiple C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more members of A, B, or C. Elements of all aspects described throughout this disclosure that are presently or hereafter known to those skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended as a donation to the public, whether or not such disclosure is explicitly stated in the claims. Terms such as “module,” “mechanism,” “element,” and “device” are not necessarily substitutes for the term “apparatus.” Thus, no claim element should be interpreted as an apparatus plus a function unless the element is explicitly stated using the phrase “apparatus for…”.

Claims

1. A method for managing cross-link interference (CLI) by a first network node of a wireless communication network, comprising: Generate a reflection coefficient measurement configuration for a smart reflective surface (IRS) controlled by the first network node to mitigate CLI caused by a first user equipment (UE) controlled by the first network node to a second UE controlled by a second network node. Transmit network information, including the reflection coefficient measurement configuration, to the second network node and to the IRS; In response to transmitting the network information, CLI measurement information associated with the second UE and corresponding to the reflection coefficient measurement configuration is received from the second network node; Identify the reflection coefficient indicated by the received CLI measurement information as a specific reflection coefficient from the set of different reflection coefficients associated with the reflection coefficient measurement configuration; as well as The IRS is configured using the specific reflectance coefficient.

2. The method as described in claim 1, wherein, The reflection coefficient measurement configuration includes at least one of a time-domain mode of the set of different reflection coefficients or an indication of the set of different reflection coefficients.

3. The method as described in claim 1, wherein, The reflection coefficient measurement configuration identifies the time-domain mode of the set of different reflection coefficients and includes at least one of the following: The time duration during which the IRS uses each of the different reflection coefficients in the set; The start time of using the first reflection coefficient from the set of different reflection coefficients; The number of reflection coefficients in the set of different reflection coefficients; An indication of the value corresponding to each of the different reflection coefficients in the set; or A time-domain mode indicator that identifies the time-domain mode.

4. The method of claim 3, wherein, At least one of the time duration or the start time is indicated relative to a time slot of the transmission frame, and the time-domain mode further includes a subcarrier interval.

5. The method of claim 1, wherein, The reflection coefficient measurement configuration includes each reflection coefficient in the set of different reflection coefficients.

6. The method of claim 1, further comprising: The first network node receives a request from the second network node for configuring the reflection coefficient measurement; as well as Generating the reflection coefficient measurement configuration includes: generating the reflection coefficient measurement configuration in response to receiving the request.

7. The method of claim 6, wherein, Receiving the request for the reflection coefficient measurement configuration includes: receiving the requested reflection coefficient measurement configuration generated by the second network node.

8. The method of claim 1, wherein, Receiving the CLI measurement information includes at least one of the following: Receive an indication of the specific reflection coefficient of the lowest CLI measurement among the CLI measurements corresponding to each of the different reflection coefficients in the set associated with the reflection coefficient measurement configuration performed by the second UE; or Receive the set of different reflection coefficients ordered according to their corresponding CLI intensities; or Receive CLI measurements for each of the different reflection coefficients in the set, corresponding to the direct propagation path between the first UE and the second UE; or Receive CLI measurements for each of the different reflection coefficients in the set, corresponding to the indirect propagation path between the first UE and the second UE via the IRS.

9. The method of claim 1, wherein, Identifying the specific reflectance coefficient includes: Select the specific reflection coefficient from the set of different reflection coefficients that has a corresponding CLI measurement that satisfies the CLI measurement criteria.

10. The method of claim 1, further comprising: In response to repeated use of the reflection coefficient measurement configuration, changes in CLI measurements from the second UE are tracked; as well as In response to detecting a change greater than a change threshold measured by the CLI, the specific reflectance coefficient used by the IRS is reconfigured.

11. An apparatus for managing cross-link interference (CLI) by a first network node of a wireless communication network, comprising: Memory; as well as A processor communicatively coupled to the memory, and the processor is configured to: Generate a reflection coefficient measurement configuration for a smart reflective surface (IRS) controlled by the first network node to mitigate CLI caused by a first user equipment (UE) controlled by the first network node to a second UE controlled by a second network node. Transmit network information, including the reflection coefficient measurement configuration, to the second network node and to the IRS; In response to transmitting the network information, CLI measurement information associated with the second UE and corresponding to the reflection coefficient measurement configuration is received from the second network node; Identify the reflection coefficient indicated by the received CLI measurement information as a specific reflection coefficient from the set of different reflection coefficients associated with the reflection coefficient measurement configuration; as well as The IRS is configured using the specific reflectance coefficient.

12. The apparatus of claim 11, wherein, The reflection coefficient measurement configuration identifies the time-domain mode of the set of different reflection coefficients and includes at least one of the following: The time duration during which the IRS uses each of the different reflection coefficients in the set; The start time of using the first reflection coefficient from the set of different reflection coefficients; The number of reflection coefficients in the set of different reflection coefficients; An indication of the value corresponding to each of the different reflection coefficients in the set; or A time-domain mode indicator that identifies the time-domain mode.

13. The apparatus of claim 12, wherein, At least one of the time duration or the start time is indicated relative to a time slot of the transmission frame, and the time-domain mode further includes a subcarrier interval.

14. The apparatus of claim 11, wherein, The reflection coefficient measurement configuration includes each reflection coefficient in the set of different reflection coefficients.

15. The apparatus of claim 11, wherein, The processor is further configured to: The first network node receives a request from the second network node for configuring the reflection coefficient measurement; and Generating the reflection coefficient measurement configuration includes: generating the reflection coefficient measurement configuration in response to receiving the request.

16. The apparatus of claim 15, wherein, Receiving the request for the reflection coefficient measurement configuration includes: receiving the requested reflection coefficient measurement configuration generated by the second network node.

17. The apparatus of claim 11, wherein, Receiving the CLI measurement information includes at least one of the following: Receive an indication of the specific reflection coefficient of the lowest CLI measurement among the CLI measurements corresponding to each of the different reflection coefficients in the set associated with the reflection coefficient measurement configuration performed by the second UE; or Receive the set of different reflection coefficients ordered according to their corresponding CLI intensities; or Receive CLI measurements for each of the different reflection coefficients in the set, corresponding to the direct propagation path between the first UE and the second UE; or Receive CLI measurements for each of the different reflection coefficients in the set, corresponding to the indirect propagation path between the first UE and the second UE via the IRS.

18. The apparatus of claim 11, wherein, Identifying the specific reflectance coefficient includes: Select the specific reflection coefficient from the set of different reflection coefficients that has a corresponding CLI measurement that satisfies the CLI measurement criteria.

19. The apparatus of claim 11, wherein, The processor is further configured to: In response to repeated use of the reflection coefficient measurement configuration, changes in CLI measurements from the second UE are tracked; In response to detecting a change greater than a change threshold measured by the CLI, the specific reflectance coefficient used by the IRS is reconfigured.

20. A method for managing cross-link interference (CLI) by a second network node of a wireless communication network, comprising: Receive network information including a reflection coefficient measurement configuration from a first network node, the reflection coefficient measurement configuration being targeted at a smart reflective surface (IRS) controlled by the first network node to mitigate CLIs to a second UE controlled by a second network node caused by a first user equipment (UE) controlled by the first network node; The CLI measurement configuration is transmitted to the second UE for the second UE to perform one or more CLI measurements corresponding to at least one of the different reflection coefficients in the set associated with the reflection coefficient measurement configuration; Receive one or more CLI measurements corresponding to the CLI measurement configuration from the second UE; as well as The CLI measurement information corresponding to the one or more CLI measurements is transmitted to the first network node.

21. The method of claim 20, wherein, The reflection coefficient measurement configuration includes at least one of a time-domain mode of the set of different reflection coefficients or an indication of the set of different reflection coefficients.

22. The method of claim 20, wherein, The reflection coefficient measurement configuration identifies the time-domain mode of the set of different reflection coefficients and includes at least one of the following: The time duration during which the IRS uses each of the different reflection coefficients in the set; The start time of using the first reflection coefficient from the set of different reflection coefficients; The number of reflection coefficients in the set of different reflection coefficients; An indication of the value corresponding to each of the different reflection coefficients in the set; or A time-domain mode indicator that identifies the time-domain mode.

23. The method of claim 20, wherein, The reflection coefficient measurement configuration configures the second UE to perform CLI measurement filtering for each of the different reflection coefficients in the set indicated by the reflection coefficient measurement configuration.

24. The method of claim 20, further comprising: A request for configuring the reflection coefficient measurement is transmitted to the first network node; as well as The configuration for receiving the reflection coefficient measurement is in response to transmitting the request.

25. The method of claim 20, further comprising: Select a specific reflection coefficient from the set of different reflection coefficients that satisfies the CLI measurement criteria for the corresponding CLI measurement; and The transmission of the CLI measurement information includes transmitting an indication of the specific reflectance coefficient; or The sets of different reflection coefficients are sorted according to the order of their corresponding CLI intensities; and The transmission of the CLI measurement information includes the transmission of a sorted set of the different reflectance coefficients; or The transmission of the CLI measurement information includes: transmitting a first CLI measurement set corresponding to the direct propagation path between the first UE and the second UE for each of the different reflection coefficients in the set, and a second CLI measurement set corresponding to the indirect propagation path between the first UE and the second UE via the IRS for each of the different reflection coefficients in the set.

26. An apparatus for managing cross-link interference (CLI) by a second network node of a wireless communication network, comprising: Memory; as well as A processor communicatively coupled to the memory, and the processor is configured to: Receive network information including a reflection coefficient measurement configuration from a first network node, the reflection coefficient measurement configuration being targeted at a smart reflective surface (IRS) controlled by the first network node to mitigate CLIs to a second UE controlled by a second network node caused by a first user equipment (UE) controlled by the first network node; The CLI measurement configuration is transmitted to the second UE for the second UE to perform one or more CLI measurements corresponding to at least one of the different reflection coefficients in the set associated with the reflection coefficient measurement configuration; Receive one or more CLI measurements corresponding to the CLI measurement configuration from the second UE; as well as The CLI measurement information corresponding to the one or more CLI measurements is transmitted to the first network node.

27. The apparatus of claim 26, wherein, The reflection coefficient measurement configuration identifies the time-domain mode of the set of different reflection coefficients and includes at least one of the following: The time duration during which the IRS uses each of the different reflection coefficients in the set; The start time of using the first reflection coefficient from the set of different reflection coefficients; The number of reflection coefficients in the set of different reflection coefficients; An indication of the value corresponding to each of the different reflection coefficients in the set; or A time-domain mode indicator that identifies the time-domain mode.

28. The apparatus of claim 26, wherein, The reflection coefficient measurement configuration configures the second UE to perform CLI measurement filtering for each of the different reflection coefficients in the set indicated by the reflection coefficient measurement configuration.

29. The apparatus of claim 26, wherein, The processor is further configured to: Send a request for the configuration of the reflection coefficient measurement to the first network node; and The configuration for receiving the reflection coefficient measurement is in response to transmitting the request.

30. The apparatus of claim 26, wherein, The processor is further configured to: Select a specific reflection coefficient from the set of different reflection coefficients that satisfies the CLI measurement criteria for a corresponding CLI measurement; and The transmission of the CLI measurement information includes transmitting an indication of the specific reflectance coefficient; or The sets of different reflection coefficients are sorted according to the order of their corresponding CLI intensities; and The transmission of the CLI measurement information includes the transmission of a sorted set of the different reflectance coefficients; or The transmission of the CLI measurement information includes: transmitting a first CLI measurement set corresponding to the direct propagation path between the first UE and the second UE for each of the different reflection coefficients in the set, and a second CLI measurement set corresponding to the indirect propagation path between the first UE and the second UE via the IRS for each of the different reflection coefficients in the set.

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