ULCI-triggered CLI measurements

Abstract

Certain aspects of the present disclosure provide a method for wireless communication of a user equipment (UE). The UE receives an uplink (UL) cancellation indication (ULCI) from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and instructing the UE to measure cross-link interference (CLI) from one or more other UEs within the canceled resources. The UE measures the CLI from the one or more other UEs based on the ULCI. The UE sends a CLI measurement report based on the measured CLI to the network entity.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority to U.S. Application No. 17 / 363,892, filed on June 30, 2021, which is assigned to the assignee of the present application and is hereby expressly incorporated herein by reference in its entirety, as if fully set forth below and for all applicable purposes. Technical Field

[0003] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for measuring cross-link interference (CLI) based on uplink (UL) cancellation indication (ULCI). Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcast, etc. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access systems include Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, Advanced LTE (LTE-A) systems, 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, to name just a few.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, or even global level. New Radio (NR) (e.g., fifth generation (5G)) is an example of an emerging telecommunication standard. NR is an enhancement set to the LTE mobile standard released by 3GPP. It is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using OFDMA with cyclic prefix (CP) on the downlink (DL) and on the uplink (UL), thereby better supporting mobile broadband Internet access. To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0006] However, as the demand for mobile broadband access continues to grow, there is a need for further improvements to NR and LTE technologies. Preferably, these improvements should be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. Summary of the invention

[0007] The systems, methods, and devices of the present disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. After considering this discussion, and particularly after reading the section entitled "Detailed Description," those skilled in the art will understand how the features of the present disclosure provide advantages including improved and desirable techniques for measuring cross-link interference (CLI) based on uplink (UL) cancellation indication (ULCI).

[0008] Certain aspects of the subject matter described in the present disclosure may be implemented in a method of wireless communication by a user equipment (UE). The method generally includes: receiving a ULCI from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE is to measure CLI from one or more other UEs within the canceled resources; measuring CLI from the one or more other UEs based on the ULCI; and sending a CLI measurement report based on the measured CLI to the network entity.

[0009] Certain aspects of the subject matter described in the present disclosure may be implemented in a method for wireless communication by a network entity. The method generally includes: sending a ULCI to a UE, the ULCI canceling resources assigned to the UE for UL transmission and indicating whether the UE is to measure CLI from one or more other UEs within the canceled resources; and receiving from the UE an indication of the CLI measured by the UE based on the ULCI.

[0010] Certain aspects of the subject matter described in the present disclosure may be implemented in an apparatus for wireless communication by a UE. The apparatus generally includes at least one application processor and a memory, the at least one application processor and the memory being configured to: receive a ULCI from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE is to measure CLI from one or more other UEs within the canceled resources; measure CLI from the one or more other UEs based on the ULCI; and send a CLI measurement report based on the measured CLI to the network entity.

[0011] Certain aspects of the subject matter described in the present disclosure may be implemented in an apparatus for wireless communication by a network entity. The apparatus generally includes at least one application processor and memory, the at least one application processor and memory being configured to: send a ULCI to a UE, the ULCI canceling resources assigned to the UE for UL transmission and indicating whether the UE is to measure CLI from one or more other UEs within the canceled resources; and receive from the UE an indication of CLI measured by the UE based on the ULCI.

[0012] Certain aspects of the subject matter described in the present disclosure may be implemented in an apparatus for wireless communication by a UE. The apparatus generally includes: a unit for receiving a ULCI from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE is to measure CLI from one or more other UEs within the canceled resources; a unit for measuring CLI from the one or more other UEs based on the ULCI; and a unit for sending a CLI measurement report based on the measured CLI to the network entity.

[0013] Certain aspects of the subject matter described in the present disclosure may be implemented in an apparatus for wireless communication by a network entity. The apparatus generally includes: a unit for sending a ULCI to a UE, the ULCI canceling resources assigned to the UE for UL transmission and indicating whether the UE is to measure CLI from one or more other UEs within the canceled resources; and a unit for receiving from the UE an indication of the CLI measured by the UE based on the ULCI.

[0014] Certain aspects of the subject matter described in the present disclosure may be implemented in a computer-readable medium having computer-executable code stored thereon for wireless communication by a UE. The computer-readable medium generally includes: code for receiving a ULCI from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE is to measure CLI from one or more other UEs within the canceled resources; code for measuring CLI from the one or more other UEs based on the ULCI; and code for sending a CLI measurement report based on the measured CLI to the network entity.

[0015] Certain aspects of the subject matter described in the present disclosure may be implemented in a computer-readable medium having computer-executable code stored thereon for wireless communication by a network entity. The computer-readable medium generally includes: code for sending a ULCI to a UE, the ULCI canceling resources assigned to the UE for UL transmission and indicating whether the UE is to measure CLI from one or more other UEs within the canceled resources; and code for receiving from the UE an indication of CLI measured by the UE based on the ULCI.

[0016] To accomplish the above and related purposes, one or more aspects include the features fully described below and particularly indicated in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are only indicative of some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to understand the above-mentioned features of the present disclosure in detail, the contents briefly summarized above can be described in more detail with reference to various aspects, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain aspects of the present disclosure, and the description may also include other aspects with equivalent effects.

[0018] Figure 1 is a block diagram conceptually illustrating an example wireless communication network in accordance with certain aspects of the present disclosure.

[0019] Figure 2 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs) in accordance with certain aspects of the present disclosure.

[0020] Figure 3 is an example frame format for certain wireless communication systems (e.g., New Radio (NR)) in accordance with certain aspects of the present disclosure.

[0021] Figure 4 An example wireless communication system that supports uplink (UL) transmission cancellation is illustrated.

[0022] Figure 5 Example symbol groups and resource block (RB) groups are shown.

[0023] Figure 6 is a flow chart illustrating example operations for wireless communications by a UE in accordance with certain aspects of the present disclosure.

[0024] Figure 7 is a flow diagram illustrating example operations for wireless communications by a network entity in accordance with certain aspects of the present disclosure.

[0025] Figure 8 is a call flow diagram illustrating example signaling for UL Cancellation Indication (ULCI) based Cross Link Interference (CLI) measurement in accordance with certain aspects of the present disclosure.

[0026] Fig. 9

[0013] A communications device in accordance with certain aspects of the present disclosure is shown, which may include various components configured to perform operations for the techniques disclosed herein.

[0027] Fig.10

[0013] A communications device in accordance with certain aspects of the present disclosure is shown, which may include various components configured to perform operations for the techniques disclosed herein.

[0028] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements disclosed in one aspect may be beneficially utilized on other aspects without specific recitation. DETAILED DESCRIPTION

[0029] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for measuring cross-link interference (CLI) by a user equipment (UE) based on an uplink (UL) cancellation indication (ULCI) from a network entity. The ULCI signaling may indicate that the UE will measure CLI from one or more other UEs within the cancelled resources based on the ULCI. The UE measures CLI from the other UEs within the cancelled resources, generates a CLI measurement report indicating the measured CLI, and sends it to the network entity.

[0030] The following description provides an example of CLI measurement triggered by ULCI in a wireless communication system. Without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Various examples may omit, replace or add various processes or components as appropriate. For example, the method may be performed in an order different from the order described, and various steps may be added, omitted or merged. In addition, in some other examples, the features described in certain examples may also be combined. For example, using any number of aspects set forth herein, a device may be implemented or a method may be implemented. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functions, or structures and functions other than or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of the claims.

[0031] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. RAT may also be referred to as a radio technology, air interface, etc. Frequency may also be referred to as a carrier, subcarrier, frequency channel, tone, subband, etc. In order to avoid interference between wireless networks of different RATs, each frequency may support a single RAT in a given geographic area.

[0032] The technology described herein can be used for various wireless networks and radio technologies. Although terms commonly associated with third generation (3G), 4G and / or new radio (e.g., 5G new radio (NR)) wireless technologies are used herein to describe various aspects, various aspects of the present disclosure can be applied to communication systems based on other generations.

[0033] NR access can support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth, millimeter wave mmW, massive machine type communication MTC (mMTC) targeting non-backhaul compatible MTC technology, and / or mission-critical services targeting ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet the corresponding quality of service (QoS) requirements. In addition, these services may coexist in the same subframe.

[0034] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified with the frequency range names FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). Frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Although some frequencies of FR1 are above 6 GHz, FR1 is often referred to as the "Sub-6 GHz" band (used interchangeably) in various documents and articles. Similar naming issues sometimes arise regarding FR2, although unlike the extremely high frequency (EHF) band (30 GHz-300 GHz) which is identified as the "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is often (interchangeably) referred to as the "millimeter wave" band in documents and articles.

[0035] In view of the above, unless otherwise specifically stated, it should be understood that if the term is used in this article, "sub-6GHz" or the like can broadly represent frequencies that may be less than 6GHz, frequencies that may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that the term "millimeter wave" or similar terms used in this article can broadly represent frequencies that may include mid-band frequencies, may be within FR2, or may be within the EHF band.

[0036] NR supports beamforming and can dynamically configure the beam direction. It can also support MIMO transmission with precoding. The MIMO configuration in DL can support up to 8 transmit antennas and can support up to 8 data streams per UE and multi-layer DL transmission of 2 data streams. It can support multi-layer transmission of up to 2 data streams per UE. It can support aggregation of multiple cells with up to 8 serving cells.

[0037] Example Wireless Communication System

[0038] Figure 1An example wireless communication network 100 is shown in which various aspects of the present disclosure may be performed. For example, according to certain aspects, the wireless communication network 100 may include a base station (BS) 110 and / or a user equipment (UE) 120 configured to manage cross-link interference (CLI) measurements based on an uplink (UL) cancellation indication (ULCI). Figure 1 As shown, UE 120a includes a processor configured to execute Figure 6 The ULCI manager 122 of operation 600 and the BS 110a include a BS configured to perform Figure 7 Operation 700 of the ULCI manager 112 .

[0039] The wireless communication network 100 may be a new radio (NR) system (e.g., a 5th generation (5G) NR network). Figure 1 As shown in , the wireless communication network 100 can communicate with the core network. The core network can communicate with BSs 110a-z (each also individually referred to as BS 110 or collectively referred to as BS 110 herein) and / or UEs 120a-y (each also individually referred to as UE 120 or collectively referred to as UE 120 herein) in the wireless communication network 100 via one or more interfaces.

[0040] BS 110 may provide communication coverage for a particular geographic area (sometimes referred to as a "cell"), which may be stationary or may move depending on the location of mobile BS 110. In some examples, BS 110 may be interconnected with one or more other BSs or network nodes (not shown) in wireless communication network 100 via various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, or the like) using any suitable transport network. Figure 1 In the example shown in FIG. 1 , BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. BS 110 may support one or more cells.

[0041] The BS 110 communicates with the UE 120 in the wireless communication network 100. The UEs 120 (e.g., 120x, 120y, etc.) may be dispersed throughout the wireless communication network 100, and each UE 120 may be static or mobile. The wireless communication network 100 may also include a relay station (e.g., a relay station 110r), also referred to as a relay station or the like, which receives data and / or transmissions of other information from an upstream station (e.g., BS 110a or UE 120r) and sends data and / or transmissions of other information to a downstream station (e.g., UE 120 or BS 110), or relays transmissions between UEs 120 to facilitate communication between devices.

[0042] The network controller 130 may communicate with a set of BSs 110 and provide coordination and control (e.g., via a backhaul) for these BSs 110. In various aspects, the network controller 130 may communicate with a core network 132 (e.g., a 5G core network (5GC)), which provides various network functions (e.g., access and mobility management, session management, user plane functions, policy control functions, authentication server functions, unified data management, application functions, network exposure functions, network repository functions, network slice selection functions, etc.).

[0043] Figure 2 It is shown (for example, in Figure 1 1 and 120a in a wireless communication network 100.

[0044] At BS 110a, a transmit processor 220 may receive data from a data source 212 and control information from a controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ (automatic repeat request) indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), etc. The data may be for a physical downlink shared channel (PDSCH), etc. A medium access control-control element (MAC-CE) is a MAC layer communication structure that may be used to control the exchange of commands between wireless nodes. The MAC-CE may be carried in a shared channel such as a PDSCH, a physical uplink shared channel (PUSCH), or a physical sidelink shared channel (PSSCH).

[0045] The transmit processor 220 may process (e.g., encode and symbol map) data and control information, respectively, to obtain data symbols and control symbols. The transmit processor 220 may also generate reference symbols such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a channel state information reference signal (CSI-RS). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and may provide an output symbol stream to a modulator (MOD) in a transceiver 232a-232t. Each MOD in a transceiver 232a-232t may process a respective output symbol stream (e.g., for orthogonal frequency division multiplexing (OFDM), etc.) to obtain an output sample stream. Each MOD in a transceiver 232a-232t may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink (DL) signal. DL signals from the MODs in transceivers 232a-232t may be transmitted via antennas 234a-234t, respectively.

[0046] At UE 120a, antennas 252a-252r may receive DL signals from BS110a and may provide received signals to demodulators (DEMODs) in transceivers 254a-254r, respectively. Each DEMOD in transceiver 254 may condition (e.g., filter, amplify, downconvert, and digitize) the corresponding received signal to obtain input samples. Each DEMOD in transceiver 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 may obtain received symbols from all DEMODs in transceivers 254a-254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. Receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data of UE 120a to data sink 260, and provide decoded control information to controller / processor 280.

[0047] On the uplink (UL), at the UE 120a, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a PUSCH) and control information from a controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 264 may be precoded by a transmit MIMO processor 266 (if applicable), further processed by a MOD (e.g., for SC-FDM, etc.) in transceivers 254a-254r, and transmitted to the BS 110a. At the BS 110a, the UL signal from the UE 120a may be received by the antenna 234, processed by the DEMOD in the transceiver 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120a. The receive processor 238 may provide decoded data to a data sink 239 and decoded control information to a controller / processor 240 .

[0048] Memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.Scheduler 244 may schedule UE 120 for data transmission on the DL and / or UL.

[0049] The antenna 252, processors 266, 258, 264 and / or controller / processor 280 of the UE 120a and / or the antenna 234, processors 220, 230, 238 and / or controller / processor 240 of the BS 110a may be used to perform the various techniques and methods described herein. Figure 2 As shown in FIG. 1 , the controller / processor 240 of the BS 110a has a ULCI manager 241, which may be configured to execute Figure 7 The operations shown in and other operations disclosed herein. Figure 2 As shown in FIG. 1 , the controller / processor 280 of the UE 120a has a ULCI manager 281, which may be configured to perform Figure 6 The operations shown in and other operations disclosed herein. Although shown at the controller / processor, other components of the UE 120a and BS 110a may be used to perform the operations described herein.

[0050] NR can utilize OFDM with a cyclic prefix (CP) on UL and DL. NR can support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) divide the system bandwidth into multiple orthogonal subcarriers, which are also commonly referred to as frequency modulation, frequency bands, etc. Each subcarrier can be modulated with data. Modulation symbols can be sent using OFDM in the frequency domain and using SC-FDM in the time domain. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers can depend on the system bandwidth. The minimum resource allocation (called a resource block (RB)) can be 12 consecutive subcarriers. The system bandwidth can also be divided into subbands. For example, a subband can cover multiple RBs. NR can support a basic subcarrier spacing (SCS) of 15KHz, and other SCSs (e.g., 30kHz, 60kHz, 120kHz, 240kHz, etc.) can be defined with respect to the basic SCS.

[0051] Figure 3 300 is a schematic diagram showing an example of a frame format for NR. The transmission timeline for each of DL and UL can be divided into units of radio frames. Each radio frame can have a predetermined duration (e.g., 10 ms) and can be divided into 10 subframes of 1 ms each with indices from 0 to 9. Each subframe can include a variable number of slots depending on the SCS (e.g., 1, 2, 4, 8, 16... Depending on the SCS, each slot can include a different number of symbol periods (e.g., 7, 12 or 14 symbols). An index can be assigned to the symbol period in each slot. The subslot structure can refer to a transmission time interval with a duration less than one slot (e.g., 2, 3 or 4 symbols). Each symbol in a slot can be configured for a link direction (e.g., DL, UL or flexible) of data transmission, and the link direction for each subframe can be dynamically switched. The link direction can be based on the slot format. Each slot can include DL / UL data and DL / UL control information.

[0052] In NR, synchronization signal blocks (SSBs) are transmitted. In certain aspects, SSBs may be transmitted in bursts, with each SSB in the burst corresponding to a different beam direction for UE-side beam management (e.g., including beam selection and / or beam refinement). SSBs include PSS, SSS, and two symbols PBCH. SSBs may be transmitted in fixed slot positions, such as Figure 3Symbols 0-3 shown. PSS and SSS can be used by UE for cell search and acquisition. PSS can provide half-frame timing, and synchronization signal (SS) can provide CP length and frame timing. PSS and SSS can provide cell identification. PBCH carries some basic system information, such as DL system bandwidth, timing information within radio frames, SS burst set periodicity, system frame number, etc. SSB can be organized into SS bursts to support beam scanning. More system information such as remaining minimum system information (RMSI), system information block (SIB), and other system information (OSI) can be sent on PDSCH in specific subframes. For millimeter waves, for example, SSB can be sent up to sixty-four times using up to sixty-four different beam directions. Multiple transmissions of SSB are called SS burst sets. SSBs in an SS burst set can be sent in the same frequency region, while SSBs in different SS burst sets can be sent at different frequency regions.

[0053] Example Uplink (UL) Cancel Indication (ULCI)

[0054] The wireless communication system supports different services, which may include communication services with different reliability thresholds, different delay thresholds, different services, or various combinations thereof. For example, the wireless communication system may support a first service type associated with a relatively high reliability target and a relatively low delay target, such as an ultra-reliable low-latency communication (URLLC) service type. The wireless communication system may also support a second service type associated with a relatively low reliability target and a relatively long delay threshold, such as an enhanced mobile broadband (eMBB) service type. In some cases, in order to support various system operations, such as efficient utilization of wireless communication resources, appropriate allocation or balancing of wireless communication resources, and appropriate support for services according to different priority rankings or delay thresholds, the wireless communication system may support resource sharing between service types according to different service types, categories, or other priority rankings, such as dynamic allocation of resources between URLLC communications and eMBB communications, or other communications.

[0055] The wireless communication system includes a base station (BS) that schedules resources for user equipment (UE) for transmission or reception of, for example, eMBB data. The BS may be aware of a more urgent, higher priority transmission from another UE. For example, the other transmission may be from a delay-sensitive UE that requires URLLC. In this case, the BS may recycle resources previously scheduled to a first UE of a lower priority for use by a second UE of a higher priority. If the previously scheduled resources are used for uplink (UL) transmission, the BS sends a UL cancellation indication (ULCI) to the first UE in the ULCI opportunity to cancel at least a portion of the UL transmission of a lower priority (e.g., eMBB) from the first UE. The BS may then allocate the recovered resources to a higher priority, delay-sensitive second UE for transmission of a higher priority (e.g., URLLC).

[0056] like Figure 4 As shown, the BS is configured to send ULCI when two UEs (such as a first UE and a second UE) are within the coverage of the same beam from the BS. For example, initially, the BS (or other network entity) allocates UL resources (e.g., initial UL resource allocation) to the first UE for UL transmission. The BS then determines to perform reallocation of previously allocated UL resources, which may be triggered by the need or request to support higher priority communications from a nearby second UE. The BS then generates and sends a ULCI to the first UE, which may correspond to at least a portion of the previously allocated UL resources (e.g., allocated to the first UE). The first UE is configured to monitor the ULCI and, accordingly, determine whether to continue UL transmission using its previously allocated UL resources based at least in part on the received ULCI. Based on the ULCI, the resources initially allocated to the first UE for eMBB communications are reallocated to the second UE for URLLC communications.

[0057] In some cases, the BS sends the ULCI to the first UE via downlink control information (DCI) (such as DCI format 2_4). The ULCI DCI includes multiple cancellation indication fields, and each cancellation indication field corresponds to a UL carrier. In some cases, the ULCI is indicated to the first UE based on the indicated symbol group and resource block (RB) group. In one example, Figure 5 As shown, one RB group in one symbol group may be the minimum resource cancellation unit.

[0058] As described above, when the BS sends a ULCI to the first UE to cancel resources assigned to the first UE and reassign these resources to the second UE, this may mean that the first UE and the second UE are geographically close to each other. If the first UE and the second UE are not geographically close to each other, resources of spatial domain multiplexing (SDM) can be allocated to the first UE and the second UE for concurrent transmission. When the first UE and the second UE are geographically close to each other, the UL transmission from one of these UEs can be detected by the other UE (e.g., similar to the cross-link interference (CLI) measurement of Rel-16).

[0059] Example Cross Link Interference (CLI)

[0060] In Rel-16, Cross Link Interference (CLI) is defined as measuring the interference between two User Equipments (UEs) that are geographically close to each other. For example, when a first UE (i.e., the aggressor UE) is transmitting, a second UE (i.e., the victim UE) located close to the first UE may receive a transmission from the first UE as CLI if the second UE is receiving the transmission.

[0061] In Release 16, signaling and procedures are specified for the victim UE to measure CLI from the attacker UE. In general, the attacker UE does not send any transmission dedicated to CLI measurement by another victim UE. In addition, the attacker UE is unaware that the UL transmission from the attacker UE is being measured by the victim UE for CLI. When the base station (BS) configures CLI measurement resources to the victim UE, the victim UE measures CLI. Based on the CLI measurement resources, the victim UE performs periodic measurements to measure CLI based on the sounding reference signal (SRS) reference signal received power (RSRP) or the received signal strength indicator (RSSI). The victim UE measures the CLI from the attacker UE based on the SRS RSRP or RSSI, and then generates a CLI measurement report indicating the measured CLI. The victim UE sends a CLI measurement report to the BS. In some cases, based on the CLI measurement report received from the victim UE, the BS manages the scheduling of the attacker UE and the victim UE to balance the throughput of different UEs.

[0062] In Release 16, Layer 3 (such as Radio Resource Control (RRC) layer) CLI measurements are defined. However, Layer 1 (such as Physical (PHY) layer) CLI measurements support faster CLI measurements for dynamic Time Division Duplex (TDD). Layer 1 CLI measurements can be triggered by Downlink Control Information (DCI) (e.g., in a manner similar to Channel State Information (CSI) measurements and reporting).

[0063] As described above, for an uplink (UL) cancellation indication (ULCI) scenario in a wireless communication system, two UEs (a first UE and a second UE) may be sufficiently close to each other. When the BS sends a ULCI to the first UE to cancel resources assigned to the first UE and reassign the canceled resources to the second UE, the ULCI may also provide free signaling so that the first UE can measure potential interference from UL transmissions of other nearby UEs (such as the second UE). The first UE may then generate a CLI measurement report indicating the measured CLI from the second UE and send it to the BS. For example, when dynamic TDD is enabled, the BS may use the CLI measurement report to manage the first UE and the second UE. Therefore, it is useful for the first UE that cancels resources based on the ULCI to measure UL transmissions from the second UE (to which the canceled resources are reassigned).

[0064] Example ULCI-triggered CLI measurement

[0065] Various aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for measuring cross-link interference (CLI) based on an uplink (UL) cancellation indication (ULCI). For example, a first user equipment (UE) may receive a ULCI from a base station (BS), thereby triggering the first UE to measure potential CLI from UL transmissions of other nearby UEs (such as a second UE). The BS receives the measured CLI from the first UE, and the BS uses the measured CLI to manage potential future interference between the first UE and the second UE to enhance overall throughput.

[0066] Figure 6 6 is a flow chart illustrating example operations 600 for wireless communications by a UE in accordance with certain aspects of the present disclosure. Operations 600 may be performed by, for example, a UE 120a in a wireless communications network 100. Operations 600 may be implemented as a process on one or more processors (e.g., Figure 2 In addition, the UE may transmit and receive signals in operation 600 by, for example, one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the UE may be implemented via a bus interface of one or more processors (eg, controller / processor 280) that obtain and / or output signals.

[0067] Operations 600 begin at 602 by receiving a ULCI from a network entity that cancels resources assigned to a UE for UL transmission and indicates that the UE is to measure CLIs from one or more other UEs within the canceled resources. For example, the UE may use Figure 1 or Figure 2The antenna and receiver / transceiver components of UE 120a shown in FIG. Fig. 9 The apparatus shown in FIG. 1 is used to receive ULCI from a network entity.

[0068] At 604, the UE measures the CLI from one or more other UEs based on the ULCI. For example, the UE may use Figure 1 or Figure 2 The processor and / or Fig. 9 The processor of the device shown in FIG. 1 measures CLI from one or more other UEs.

[0069] At 606, the UE sends a CLI measurement report to the network entity based on the measured CLI. For example, the UE may use Figure 1 or Figure 2 The antenna and transmitter / transceiver components of UE 120a shown in FIG. Fig. 9 The antenna and transmitter / transceiver components of the apparatus shown in FIG. 1 are used to send CLI measurement reports to a network entity.

[0070] Figure 7 is shown as Figure 6 600. For example, operation 700 may be performed by a network entity (eg, such as BS 110a in wireless communication network 100) to trigger a UE (executing Figure 6 Operation 700 may be implemented as a process in which one or more processors (e.g., Figure 2 In addition, the transmission and reception of signals by the BS in operation 700 may be performed by one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the BS may be implemented via a bus interface of one or more processors (eg, controller / processor 240) that obtain and / or output signals.

[0071] Operations 700 begin at 702 by sending a ULCI to a UE that cancels resources assigned to the UE for UL transmission and indicates whether the UE is to measure CLIs from one or more other UEs within the canceled resources. For example, a network entity may use Figure 1 or Figure 2 The antenna and transmitter / transceiver components of BS110a shown in FIG. Fig.10 The antenna and transmitter / transceiver components of the apparatus shown in FIG. 1 are used to send ULCI to the UE.

[0072] At 704, the network entity receives from the UE an indication of the CLI measured by the UE based on the ULCI. For example, the network entity may use Figure 1 or Figure 2 The antenna and transmitter / transceiver components of BS 110a shown in FIG. Fig.10 The antenna and transmitter / transceiver components of the apparatus shown in FIG. 1 are used to receive an indication of the measured CLI from the UE.

[0073] You can refer to Figure 8 Call flow diagram to understand Figure 6 and 7 In other words, Figure 8 The BS can perform Figure 7 The operation 700 triggers UE1 to Figure 6 The operations 600 generate and send CLI measurements.

[0074] like Figure 8 As shown, at 802, a BS (eg, Figure 1 or Figure 2 BS110a) shown in FIG. Figure 1 or Figure 2 The UE 120a) shown sends signaling indicating CLI resource configuration. For example, the BS may send the CLI resource configuration to UE1 via radio resource control (RRC) signaling. In some aspects, the CLI resource configuration indicates a CLI threshold to UE1. UE1 may use the CLI threshold for event-triggered CLI measurement reporting.

[0075] At 804, the BS sends signaling indicating the ULCI to UE1. For example, the BS sends the ULCI to UE1 via downlink control information (DCI). In some examples, the DCI may have DCI format 2_4 or any other format.

[0076] In certain aspects, the ULCI indicates that resources for UL transmissions that are de-assigned to UE 1. In some examples, the ULCI explicitly indicates some symbols (eg, the first set of symbols) to be de-assigned.

[0077] In some aspects, the ULCI includes a CLI flag. For example, the CLI flag in the ULCI indicates to UE1 whether CLI measurements from other UEs are triggered by the ULCI.

[0078] At 806, resources assigned to UE1 for UL transmission are de-assigned based on the ULCI. The de-assigned resources are then assigned to one or more other UEs (eg, UE2) based on the ULCI. UE1 and UE2 are close to each other.

[0079] In certain aspects, UE1 cancels the first set of symbols indicated by the ULCI. In certain aspects, when UL transmission of UE1 partially overlaps with the cancelled resources based on the ULCI, UE1 cancels other symbols (eg, the second set of symbols).

[0080] At 808, UE1 is triggered by the CLI flag in the ULCI to measure CLI from one or more other UEs (ie, UE2) within the cancelled resources.

[0081] In some aspects, the CLI flag includes a bit indicating that UE1 measures CLI for all cancellation indications in the ULCI. In some aspects, the CLI flag includes a bit for each cancellation indication in the ULCI. For example, each bit can indicate to UE1 whether UE1 must measure CLI for the corresponding cancellation indication. In some aspects, when one bit is used to indicate whether CLI is measured for resources canceled by each cancellation indication, the BS indicates to UE1 whether to measure CLI for each UL carrier separately. In some aspects, when the BS does not indicate to UE1 separately whether CLI is measured for each UL carrier, if the resource is canceled on the UL carrier, UE1 measures CLI on each of its active UL carriers.

[0082] In some aspects, the ULCI indicates a resource granularity for measuring CLI from one or more other UEs within the cancelled resources (such as UE2). For example, the resource granularity may be indicated to UE1 via the ULCI to allow UE1 to report CLI for one or more other UEs separately. In some aspects, the resource granularity may indicate that UE1 measures a single CLI from one or more other UEs across all cancelled resources on each UL carrier. In some aspects, the resource granularity may indicate that UE1 measures CLI for each pair of symbol groups and resource block (RB) groups within the cancelled resources separately. In some aspects, the resource granularity may indicate that UE1 measures CLI for each pair of symbol and RB groups within the cancelled resources separately.

[0083] At 810 , UE1 measures CLI from UE2 on resources cancelled by ULCI during UL transmission from UE2.

[0084] In certain aspects, UE1 does not perform CLI measurements on symbols that are cancelled but not explicitly indicated by the ULCI. In some examples, UE1 may measure CLI from UE2 on a first set of symbols (which are explicitly indicated by the ULCI to be cancelled from UE1 and assigned to UE2). In some examples, UE1 may not measure CLI from UE2 on a second set of symbols (not explicitly indicated by the ULCI because CLI measurements are not performed on symbols that are cancelled but not explicitly indicated by the ULCI).

[0085] In some aspects, the CLI measurement is a receive operation and the UL that is cancelled is a transmit operation. In some aspects, the ULCI-based CLI measurement may be limited to flexible symbols of UE1. However, in some cases, if the timeline allows UE1 to switch from transmit operation to receive operation in the symbol indicated by the ULCI, ULCI-based CLI measurement may be possible in semi-static or dynamic UL symbols. In some aspects, a minimum gap may be provided for UE1 to switch from its UL transmission to receiving UE2 UL transmission after receiving the ULCI.

[0086] In some cases (such as Rel-16), UE1 may cancel the first symbol of its UL transmission when receiving ULCI at the end of reception of the physical downlink control channel (PDCCH) carrying DCI format 2_4. proc，2 +d symbols later. proc，2 +d notation, d∈{0, 1, 2} is reported as UE1 capability. proc，2 When 2，1 = 0 and UE1 processing time of physical uplink shared channel (PUSCH) assuming N2 of minimum processing capability 2. In certain aspects, after receiving the ULCI indicating to measure CLI, the minimum gap for UE1 to measure CLI from UE2 may be increased by adding a positive offset.

[0087] In some aspects, UE1 measures the CLI from UE2 from a starting position within a time after a minimum gap from the reception of ULCI. For example, UE1 may measure the first symbol of the CLI from UE2 within T from the end of the reception of the signaling carrying ULCI (e.g., DCI format 2_4). proc，2 +d+d cli After T proc，2 +d+d cli , T proc，2 +d is the minimum clearance required for a conventional ULCI, and d cli It is an additional gap used by UE1 for CLI measurement.

[0088] In some aspects, UE1 measures CLI from UE2 based on ULCI by measuring a received signal strength indication (RSSI) from UE2. For example, the ULCI received by UE1 may trigger RSSI measurement from UE2. RSSI measurement may be considered as a layer 1 aperiodic CLI measurement report (e.g., in a manner similar to the aperiodic channel state information (CSI) framework). In some cases (such as for the Third Generation Partnership Project (3GPP) New Radio (NR) Rel-16), CLI may be based on layer 3 measurements. In some cases, CLI measurements and reports may be extended to layer 1 measurements based on the CSI measurement and reporting framework. For example, in DCI format 0_1 ​​for aperiodic CSI triggering, one or more fields are included, such as a CSI request field (to select one of up to 64 trigger states) and a carrier indicator field (to determine the carrier on which the CSI report is sent).

[0089] In some aspects, ULCI is a special trigger signaling for layer 1 CLI measurement. In some cases, for CLI measurement from UE2, the associated trigger state and carrier indicator can be configured by RRC to perform ULCI triggered CLI measurement. In such cases, it is not necessary to add an additional bit in the ULCI sent to UE1 to indicate the triggering of CLI measurement from UE2.

[0090] In certain aspects, a trigger state may be associated with the ULCI to measure the CLI from the UE2 based on the ULCI. Then, the UE1 generates a CLI measurement report based on the measured CLI.

[0091] At 812, UE1 sends a CLI measurement report based on the measured CLI to the BS. In certain aspects, when there are more than one other UEs sending UL transmissions within the cancelled resources, UE1 may report the CLI measurement report to the BS separately for each other UE.

[0092] In some aspects, the size of the CLI measurement report depends on the resource granularity. For example, when the resource granularity is finer, the size of the CLI measurement report is larger. In some aspects, in order to reduce the size of the CLI measurement report, the CLI measurement report may only indicate whether the measured CLI from UE2 is above the CLI threshold (indicated in the CLI resource configuration).

[0093] In certain aspects, the UE sends the CLI measurement report to the BS on a UL carrier. In a non-limiting example, the UL carrier for sending the CLI measurement report may be associated with a downlink (DL) carrier on which the UE receives the ULCI from the BS. In another non-limiting example, the UE carrier may be associated with a cancellation indication field indicating cancelled resources in the ULCI. In another non-limiting example, the UL carrier may be indicated in an associated trigger state, and the UL carrier may include a configured UL carrier for sending the CLI measurement report in the triggered state.

[0094] Example Wireless Communication Device

[0095] Fig. 9 A communication device 900 is shown, which may include various components (eg, corresponding to means-plus-function components) configured to perform operations of the techniques disclosed herein (eg, Figure 6 900). The communication device 900 includes a processing system 902 coupled to a transceiver 908 (e.g., a transmitter and / or a receiver). The transceiver 908 is configured to send and receive signals (e.g., various signals described herein) for the communication device 900 via an antenna 910. The processing system 902 can be configured to perform processing functions for the communication device 900, including processing signals received and / or to be transmitted by the communication device 900.

[0096] The processing system 902 includes a processor 904 coupled to a computer-readable medium / memory 912 via a bus 906. In some aspects, the computer-readable medium / memory 912 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 904, cause the processor 904 to perform Figure 6 , or other operations for performing the various techniques discussed herein. In certain aspects, the computer-readable medium / memory 912 stores code 914 for receiving, code 916 for measuring, and code 918 for sending. The code 914 for receiving may include code for receiving a ULCI from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE will measure CLI from one or more other UEs within the canceled resources. The code 916 for measuring may include code for measuring CLI from one or more other UEs based on the ULCI. The code 918 for sending may include code for sending a CLI measurement report based on the measured CLI to the network entity.

[0097] Processor 904 may include circuitry configured to implement code stored in computer-readable medium / memory 912, such as for executing Figure 6The operations shown in and other operations for performing various techniques discussed herein. For example, the processor 904 includes a circuit 920 for receiving, a circuit 922 for measuring, and a circuit 924 for sending. The circuit 920 for receiving may include: a circuit for receiving a ULCI from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE is to measure CLI from one or more other UEs within the canceled resources. The circuit 922 for measuring may include a circuit for measuring CLI from one or more other UEs based on the ULCI. The circuit 924 for sending may include a circuit for sending a CLI measurement report based on the measured CLI to the network entity.

[0098] Fig.10 A communication device 1000 is shown, which may include devices configured to perform operations for the techniques disclosed herein (such as in Figure 7 1000 includes various components (e.g., corresponding to the units plus functional components) of the communication device 1000. The communication device 1000 includes a processing system 1002 coupled to a transceiver 1008 (e.g., a transmitter and / or a receiver). The transceiver 1008 is configured to send and receive signals (e.g., the various signals described herein) for the communication device 1000 via an antenna 1010. The processing system 1002 can be configured to perform processing functions for the communication device 1000, including processing signals received and / or to be transmitted by the communication device 1000.

[0099] The processing system 1002 includes a processor 1004 coupled to a computer readable medium / memory 1012 via a bus 1006. In some aspects, the computer readable medium / memory 1012 is configured to store instructions (e.g., computer executable code) that, when executed by the processor 1004, cause the processor 1004 to perform Figure 7 1014 and 1016. The computer-readable medium / memory 1012 may include code for transmitting a ULCI to a UE, the ULCI cancelling resources assigned to the UE for UL transmission and indicating whether the UE is to measure CLI from one or more other UEs within the canceled resources. The code for receiving 1016 may include code for receiving, from the UE, an indication of the CLI measured by the UE based on the ULCI.

[0100] Processor 1004 may include circuitry configured to implement code stored in computer-readable medium / memory 1012, such as for executing Figure 7The operations shown in and other operations for performing various techniques discussed herein. For example, the processor 1004 includes a circuit 1018 for sending and a circuit 1020 for receiving. The circuit 1018 for sending may include a circuit for sending a ULCI to the UE, the ULCI canceling the resources assigned to the UE for UL transmission and indicating whether the UE is to measure CLI from one or more other UEs within the canceled resources. The circuit 1020 for receiving may include a circuit for receiving from the UE an indication of the CLI measured by the UE based on the ULCI.

[0101] Example aspects

[0102] Examples of implementations are described in the following numbered aspects:

[0103] In a first aspect, a method for wireless communication by a user equipment (UE), comprising: receiving an uplink (UL) cancellation indication (ULCI) from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE is to measure cross-link interference (CLI) from one or more other UEs within the canceled resources; measuring the CLI from the one or more other UEs based on the ULCI; and sending a CLI measurement report based on the measured CLI to the network entity.

[0104] In a second aspect, alone or in combination with the first aspect, the ULCI includes a flag indicating that measurement of the CLI from one or more other UEs within the cancelled resources is triggered by the ULCI.

[0105] In a third aspect, alone or in combination with one or more of the first and second aspects, the flag comprises a bit indicating that the UE is to measure the CLI for all cancellation indications in the ULCI.

[0106] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the flag comprises a bit for each cancellation indication in the ULCI, each bit indicating whether the UE is to measure the CLI for the corresponding cancellation indication.

[0107] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the canceled resources are assigned to one or more other UEs; the UE reports CLI measured for one or more other UEs to a network entity separately; and the ULCI indicates a resource granularity for measuring CLI from one or more other UEs within the canceled resources.

[0108] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the size of the CLI measurement report depends on resource granularity.

[0109] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the resource granularity indicates that: the UE is to measure a single CLI from one or more other UEs across all canceled resources on each UL carrier; the UE is to measure the CLI separately for each pair of symbol groups and resource block (RB) groups within the canceled resources; or the UE is to measure the CLI separately for each pair of symbol groups and RB groups within the canceled resources.

[0110] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, signaling indicating a CLI threshold is received, wherein the CLI measurement report indicates whether the measured CLI is above the threshold.

[0111] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the ULCI explicitly indicates a first set of symbols for cancellation; and when the UE's UL transmission partially overlaps with the canceled resources based on the ULCI, the UE cancels a second set of symbols.

[0112] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the UE measures CLI on a first set of symbols and does not measure CLI on a second set of symbols.

[0113] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the UE measures CLI from one or more other UEs from a starting position in time after a minimum gap from reception of a ULCI.

[0114] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, measuring CLI from one or more other UEs includes measuring a received signal strength indication (RSSI) from the one or more UEs.

[0115] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, a trigger state is associated with the ULCI to measure CLI from one or more other UEs within the cancelled resources and generate a CLI measurement report based on the measured CLI.

[0116] In a fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, the UE sends a CLI measurement report to a network entity on a UL carrier, and wherein the UL carrier is associated with at least one of: a downlink (DL) carrier receiving a ULCI or a cancellation indication field indicating cancelled resources in the ULCI.

[0117] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the UL carrier comprises a configured UL carrier for sending a CLI measurement report, and wherein the UL carrier is indicated in a triggered state.

[0118] In a sixteenth aspect, a method for wireless communication by a network entity comprises: sending an uplink (UL) cancellation indication (ULCI) to a user equipment (UE), the ULCI canceling resources assigned to the UE for UL transmission and indicating whether the UE is to measure cross-link interference (CLI) from one or more other UEs within the canceled resources; and receiving from the UE an indication of the CLI measured by the UE based on the ULCI.

[0119] In a seventeenth aspect, alone or in combination with the sixteenth aspect, the ULCI includes a flag indicating that measurement of CLI from one or more other UEs within the cancelled resources is triggered by the ULCI.

[0120] In an eighteenth aspect, alone or in combination with one or more of the sixteenth and seventeenth aspects, the flag comprises a bit indicating that the UE is to measure the CLI for all cancellation indications in the ULCI.

[0121] In a nineteenth aspect, alone or in combination with one or more of the sixteenth to eighteenth aspects, the flag comprises a bit for each cancellation indication in the ULCI, each bit indicating whether the UE is to measure the CLI for the corresponding cancellation indication.

[0122] In the twentieth aspect, either alone or in combination with one or more of the sixteenth to nineteenth aspects, the canceled resources are assigned to one or more other UEs; the network entity receives from the UE a separate report of CLI measured for the one or more other UEs; and the ULCI indicates a resource granularity for measuring CLI from the one or more other UEs within the canceled resources.

[0123] In a twenty-first aspect, alone or in combination with one or more of the sixteenth to twentieth aspects, a size of a CLI measurement report indicating the CLI measured by the UE depends on a resource granularity.

[0124] In a twenty-second aspect, alone or in combination with one or more of the sixteenth to twenty-first aspects, signaling indicating a CLI threshold is sent, wherein the CLI measurement report indicates whether the measured CLI is above the threshold.

[0125] In a twenty-third aspect, alone or in combination with one or more of the sixteenth to twenty-second aspects, a trigger state is associated with the ULCI to measure CLI from one or more other UEs within the cancelled resources and generate a CLI measurement report based on the measured CLI.

[0126] In a twenty-fourth aspect, either alone or in combination with one or more of aspects sixteen to twenty-third, a network entity receives a CLI measurement report sent by a UE on a UL carrier, and wherein the UL carrier is associated with at least one of: a downlink (DL) carrier receiving a ULCI or a cancellation indication field indicating cancelled resources in the ULCI.

[0127] In a twenty-fifth aspect, alone or in combination with one or more of the sixteenth to twenty-fourth aspects, the UL carrier comprises a configured UL carrier for sending a CLI measurement report, and wherein the UL carrier is indicated in a triggered state.

[0128] A device for wireless communication, comprising: at least one processor; and a memory coupled to the at least one processor, the memory comprising code executable by the at least one processor so that the device performs a method according to any one of the first to twenty-fifth aspects.

[0129] An apparatus comprising means for performing the method of any one of the first to twenty-fifth aspects.

[0130] A computer-readable medium having stored thereon computer executable code for wireless communication, wherein the computer executable code, when executed by at least one processor, causes an apparatus to perform a method according to any one of the first to twenty-fifth aspects.

[0131] Additional Notes

[0132] The methods disclosed herein include one or more steps or actions for implementing each method. Method steps and / or actions can be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions can be modified without departing from the scope of the claims.

[0133] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. As an example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other ordering of a, b, and c).

[0134] As used herein, the term "determining" may include a variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, etc. Also, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. Furthermore, "determining" may include resolving, selecting, choosing, establishing, allocating, etc.

[0135] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may also be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but to be given the full scope consistent with the language of the claims, wherein, unless otherwise stated, a singular reference to an element is not intended to mean "one and only one", but "one or more". Unless otherwise specifically stated, the term "some" refers to one or more. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure are expressly incorporated herein by reference and are intended to be covered by the claims, and all structural and functional equivalents are known or will be known later to those of ordinary skill in the art. In addition, the content disclosed herein is not intended to be dedicated to the public, regardless of whether such disclosure is explicitly recorded in the claims. No claim element is to be interpreted according to the provisions of 35 U.S.C. §112 (f), unless the element is explicitly recorded using the phrase "unit for...", or in the case of a method claim, the element is recorded using the phrase "step for...".

[0136] The various operations of the above method can be performed by any suitable unit capable of performing the corresponding function. The unit may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors. Generally, where there are operations shown in the accompanying drawings, those operations may have corresponding paired functional unit components with similar numbers.

[0137] The various illustrative logic blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed using a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0138] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application of the processing system and the overall design constraints, the bus may include any number of interconnecting buses and bridges. The bus may link various circuits (including processors, machine-readable media, and bus interfaces) together. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In the user equipment (UE) 120 (see Figure 1 ), a user interface (e.g., a keypad, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and therefore will not be described further. The processor may be implemented using one or more general purpose processors and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how to best implement the described functionality for the processing system depending on the specific application and the overall design constraints imposed on the entire system.

[0139] If implemented with software, the function can be stored on or sent through a computer-readable medium as one or more instructions or codes. Whether referred to as software, firmware, middleware, microcode, hardware description language or other terms, software should be broadly interpreted as meaning instructions, data or any combination thereof. Computer-readable media include both computer storage media and communication media, and communication media include any media that facilitates the transmission of computer programs from one place to another. The processor can be responsible for managing the bus and general processing, including executing software modules stored on a machine-readable storage medium. The computer-readable storage medium can be coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative, the storage medium can be an integral part of the processor. By way of example, the machine-readable medium can include a transmission line, a carrier waveform modulated by data, and / or a computer-readable storage medium with instructions stored thereon separated from a wireless node, all of which can be accessed by the processor through a bus interface. Alternatively or additionally, the machine-readable medium or any part thereof can be integrated into the processor, such as the case where there may be a cache and / or a general register file. As an example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read only memory), PROM (programmable read only memory), EPROM (erasable programmable read only memory), EEPROM (electrically erasable programmable read only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination thereof. The machine-readable medium may be embodied in a computer program product.

[0140] A software module may include a single instruction or many instructions, and may be distributed over several different code segments, among different programs, and across multiple storage media. A computer-readable medium may include several software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. A software module may include a transmission module and a receiving module. Each software module may reside in a single storage device or may be distributed across multiple storage devices. By way of example, when a triggering event occurs, a software module may be loaded from a hard drive into a RAM. During execution of the software module, the processor may load some of the instructions into a cache to increase access speed. Then, one or more cache lines may be loaded into a general register file for execution by the processor. When the functions of a software module are mentioned below, it will be understood that such functions are implemented by the processor when executing instructions from the software module.

[0141] In addition, any connection is appropriately referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology (e.g., infrared (IR), radio and microwave) is used to send software from a website, server or other remote source, the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology (e.g., infrared, radio and microwave) is included in the definition of the medium. As used herein, "disk" and "optical disc" include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks and blue-ray discs, wherein disks usually copy data magnetically, and optical discs use lasers to optically copy data. Therefore, in some aspects, a computer-readable medium may include a non-temporary computer-readable medium (e.g., a tangible medium). In addition, for other aspects, a computer-readable medium may include a temporary computer-readable medium (e.g., a signal). The above combination should also be included in the scope of computer-readable media.

[0142] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having instructions stored (and / or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein, for example, for performing the operations described herein and in Figure 6 and 7 The operations shown in the instructions.

[0143] In addition, it should be understood that the modules and / or other suitable units for executing the methods and techniques described herein can be appropriately downloaded and / or otherwise obtained by a user terminal and / or a base station. For example, such a device can be coupled to a server to facilitate the transmission of a unit for executing the methods described herein. Alternatively, the various methods described herein can be provided via a storage unit (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.), so that the user terminal and / or the base station can obtain the various methods when the storage unit is coupled to or provided to the device. In addition, any other suitable technology for providing the methods and techniques described herein to the device can be used.

[0144] It is to be understood that the claims are not limited to the precise configuration and components shown above. Various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication by a user equipment (UE), comprising: receiving an uplink (UL) cancellation indication (ULCI) from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE is to measure cross-link interference (CLI) from one or more other UEs within the canceled resources; measuring the CLI from the one or more other UEs based on the ULCI; as well as A CLI measurement report based on the measured CLI is sent to the network entity.

2. The method according to claim 1, wherein: The ULCI includes a flag indicating that measurement of the CLI from the one or more other UEs within the cancelled resources is triggered by the ULCI.

3. The method according to claim 2, wherein: The flag includes a bit indicating that the UE is to measure CLI for all cancellation indications in the ULCI.

4. The method according to claim 2, wherein: The flag includes a bit for each cancellation indication in the ULCI, each bit indicating whether the UE is to measure the CLI for the corresponding cancellation indication.

5. The method according to claim 1, wherein: assigning the cancelled resources to the one or more other UEs; The UE reports the CLI measured for the one or more other UEs to the network entity respectively; and The ULCI indicates a resource granularity for measuring the CLI from the one or more other UEs within the cancelled resources.

6. The method according to claim 5, wherein: The size of the CLI measurement report depends on the resource granularity.

7. The method according to claim 6, wherein: The resource granularity indicates: The UE is to measure a single CLI from the one or more other UEs across all cancelled resources on each UL carrier; The UE is to measure the CLI separately for each pair of symbol group and resource block (RB) group within the cancelled resources; or The UE shall measure the CLI separately for each pair of symbols and RB groups within the cancelled resources.

8. The method according to claim 1, further comprising: Signaling indicating a CLI threshold is received, wherein the CLI measurement report indicates whether the measured CLI is above the threshold.

9. The method according to claim 1, wherein: The ULCI explicitly indicates a first set of symbols for cancellation; and When the UL transmission of the UE overlaps with the cancelled resource portion based on the ULCI, the UE cancels a second set of symbols, wherein the second set of symbols includes symbols that are cancelled but not explicitly indicated by the ULCI.

10. The method according to claim 9, wherein: The UE measures the CLI on the first set of symbols and does not measure the CLI on the second set of symbols.

11. The method according to claim 1, wherein: The UE measures the CLI from the one or more other UEs from a starting position in time after a minimum gap from reception of the ULCI.

12. The method according to claim 1, wherein: Measuring the CLI from the one or more other UEs includes measuring a received signal strength indication (RSSI) from the one or more UEs.

13. The method according to claim 1, wherein: The UE sends the CLI measurement report to the network entity on a UL carrier, and wherein the UL carrier is associated with at least one of: a downlink (DL) carrier receiving the ULCI or a cancellation indication field in the ULCI indicating cancelled resources.

14. The method according to claim 13, wherein: The UL carrier includes a configured UL carrier for sending the CLI measurement report.

15. A method for wireless communication by a network entity, comprising: sending an uplink (UL) cancellation indication (ULCI) to a user equipment (UE), the ULCI canceling resources assigned to the UE for UL transmission and indicating whether the UE is to measure cross-link interference (CLI) from one or more other UEs within the canceled resources; and An indication of the CLI measured by the UE based on the ULCI is received from the UE.

16. The method according to claim 15, wherein: The ULCI includes a flag indicating that measurement of the CLI from the one or more other UEs within the cancelled resources is triggered by the ULCI.

17. The method according to claim 16, wherein: The flag includes a bit indicating that the UE is to measure CLI for all cancellation indications in the ULCI.

18. The method according to claim 16, wherein: The flag includes a bit for each cancellation indication in the ULCI, each bit indicating whether the UE is to measure the CLI for the corresponding cancellation indication.

19. The method of claim 15, wherein: assigning the cancelled resources to the one or more other UEs; The network entity receives from the UE a separate report of the CLI measured for the one or more other UEs; and The ULCI indicates a resource granularity for measuring the CLI from the one or more other UEs within the cancelled resources.

20. The method according to claim 19, wherein: A size of a CLI measurement report indicating the CLI measured by the UE depends on the resource granularity.

21. The method of claim 15, further comprising: Signaling indicating a CLI threshold is sent, wherein the CLI measurement report indicates whether the measured CLI is above the threshold.

22. The method according to claim 15, wherein: The network entity receives the CLI measurement report sent by the UE on a UL carrier, and wherein the UL carrier is associated with at least one of: a downlink (DL) carrier receiving the ULCI or a cancellation indication field in the ULCI indicating cancelled resources.

23. The method according to claim 22, wherein: The UL carrier includes a configured UL carrier for sending the CLI measurement report.

24. An apparatus for wireless communication by a user equipment (UE), comprising: At least one application processor and memory configured to: receiving an uplink (UL) cancellation indication (ULCI) from a network entity, the ULCI canceling resources assigned to the UE for UL transmission and indicating that the UE is to measure cross-link interference (CLI) from one or more other UEs within the canceled resources; measuring the CLI from the one or more other UEs based on the ULCI; as well as A CLI measurement report based on the measured CLI is sent to the network entity.

25. The device according to claim 24, wherein: The ULCI includes a flag indicating that the measurement of the CLI from the one or more other UEs within the cancelled resources is triggered by the ULCI.

26. The device according to claim 25, wherein The flag includes a bit indicating that the UE is to measure CLI for all cancellation indications in the ULCI.

27. An apparatus for wireless communication by a network entity, comprising: At least one application processor and memory configured to: sending an uplink (UL) cancellation indication (ULCI) to a user equipment (UE), the ULCI canceling resources assigned to the UE for UL transmission and indicating whether the UE is to measure cross-link interference (CLI) from one or more other UEs within the canceled resources; and An indication of the CLI measured by the UE based on the ULCI is received from the UE.

28. The device according to claim 27, wherein The ULCI includes a flag indicating that measurement of the CLI from the one or more other UEs within the cancelled resources is triggered by the ULCI, and wherein the flag includes a bit indicating that the UE is to measure the CLI for all cancellation indications in the ULCI.

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