Cross link interference reporting and resource configurations
Layer 1 and layer 2 signaling for CLI reporting in SBFD systems enable faster and more accurate interference measurement and reporting, addressing slow reporting issues and enhancing resource allocation efficiency.
Patent Information
- Application Number
- PCT/CN2024/084411
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-10-02
AI Technical Summary
Current CLI measurement reporting in wireless communication systems using subband full duplex (SBFD) is relatively slow, especially in dynamic environments with rapidly moving UEs, leading to inefficient resource allocation and increased interference.
Implementing layer 1 and/or layer 2 signaling for CLI reporting, where UEs are configured with CLI measurement configurations to perform measurements on SBFD serving cells and report results quickly, using RSSI and SRS measurements to mitigate interference.
Enhances the speed and accuracy of CLI measurement reporting, allowing for more dynamic and efficient resource allocation in SBFD environments, reducing interference and improving network performance.
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Figure CN2024084411_02102025_PF_FP_ABST
Abstract
Description
CROSS LINK INTERFERENCE REPORTING AND RESOURCE CONFIGURATIONSTECHNICAL FIELD
[0001] This application relates generally to wireless communication systems, including systems, apparatuses, and methods for cross link interference (CLI) reporting and resource configurations.BACKGROUND
[0002] Wireless mobile communication technology uses various standards and protocols to transmit data between a network device (e.g., a base station, a radio head, etc. ) and a wireless communication device. Wireless communication system standards and protocols can include, for example, 3rd Generation Partnership Project (3GPP) long term evolution (LTE) (e.g., 4G) , 3GPP new radio (NR) (e.g., 5G) , and IEEE 802.11 standard for wireless local area networks (WLAN) (commonly known to industry groups as ) .
[0003] As contemplated by the 3GPP, different wireless communication systems standards and protocols can use various radio access networks (RANs) for communicating between a network device of the RAN (which may also sometimes be referred to generally as a RAN node, a network node, or simply a node) and a wireless communication device known as a UE. 3GPP RANs can include, for example, global system for mobile communications (GSM) , enhanced data rates for GSM evolution (EDGE) RAN (GERAN) , Universal Terrestrial Radio Access Network (UTRAN) , Evolved Universal Terrestrial Radio Access Network (E-UTRAN) , and / or Next-Generation Radio Access Network (NG-RAN) .
[0004] Each RAN may use one or more radio access technologies (RATs) to perform communication between the network device and the UE. For example, the GERAN implements GSM and / or EDGE RAT, the UTRAN implements universal mobile telecommunication system (UMTS) RAT or other 3GPP RAT, the E-UTRAN implements LTE RAT (sometimes simply referred to as LTE) , and NG-RAN implements NR RAT (sometimes referred to herein as 5G RAT, 5G NR RAT, or simply NR) . In certain deployments, the E-UTRAN may also implement NR RAT. In certain deployments, NG-RAN may also implement LTE RAT.
[0005] A network device used by a RAN may correspond to that RAN. One example of an E-UTRAN network device is an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (also commonly denoted as evolved Node B, enhanced Node B, eNodeB, or eNB) . One example of an NG-RAN network device is a next generation Node B (also sometimes referred to as a g Node B or gNB) .
[0006] A RAN provides its communication services with external entities through its connection to a core network (CN) . For example, E-UTRAN may utilize an Evolved Packet Core (EPC) , while NG-RAN may utilize a 5G Core Network (5GC) .BRIEF DESCRIPTION OF THE DRAWINGS
[0007] To easily identify the discussion of any particular element or act, the most significant digit or digits in a reference number refer to the figure number in which that element is first introduced.
[0008] FIG. 1 shows an example wireless communication system, according to one or more aspects described herein.
[0009] FIG. 2 shows an example wireless communication system deploying subband full duplex (SBFD) , according to one or more aspects described herein.
[0010] FIG. 3 shows an example signal flow, according to one or more aspects described herein.
[0011] FIG. 4A shows an example media access control (MAC) control element, according to one or more aspects described herein.
[0012] FIG. 4B shows an example of cross-link interference (CLI) resource signaling, according to one or more aspects described herein.
[0013] FIG. 4C shows another example of CLI resource signaling, according to one or more aspects described herein.
[0014] FIG. 5 shows an example method, according to one or more aspects described herein.
[0015] FIG. 6 shows another example method, according to one or more aspects described herein.
[0016] FIG. 7 illustrates an example architecture of a wireless communication system, according to embodiments described herein.
[0017] FIG. 8 illustrates an example system for performing signaling between a wireless device and a network device, according to embodiments described herein.DETAILED DESCRIPTION
[0018] Various embodiments are described with regard to a processor (e.g., baseband processor) , wireless device (e.g., a user equipment (UE) ) , or a network device. However, reference to a processor, wireless device, or network device is merely provided for illustrative purposes. The example embodiments may be utilized with any electronic component or device that may establish a wireless connection and is configured with the hardware, software, and / or firmware to exchange information and data over the wireless connection. Therefore, the processors, wireless devices, and network devices described herein are used to represent any appropriate electronic components or devices.
[0019] Radio frequency spectrum bands used by a network device to serve UEs conventionally operate according to one of two modes: frequency domain duplexing (FDD) or time domain duplexing (TDD) . In an FDD mode, each frequency band is dedicated to being either uplink or downlink. Typically, a network device serving according to an FDD configuration may be faster and interfere less with neighboring network devices. However, FDD may result in wasted spectrum by being relatively inflexible where there is asymmetric uplink and downlink traffic. In a TDD mode, a frequency band is switched between uplink or downlink at different times. Typically, a network device serving according to a TDD configuration may be relatively slower and interfere more with neighboring network devices than FDD. However, TDD is more flexible to changing network conditions, for example by dynamically allocating greater or fewer resources between uplink and downlink as needed, and thus may more efficiently utilize spectrum.
[0020] In some cases, FDD may be complicated to deploy and relatively inflexible, while TDD may provide inadequate throughput for uplink. Increasingly, operating using full duplex within a same frequency band is desired for network devices. As further described herein, operating in a subband full duplex (SBFD) mode may therefore be desirable. In SBFD, a network device operates using full duplex in a frequency band, while UEs typically operate using half-duplex operation (although full duplex operation could also be used) . One or more guard band separating uplink and downlink may be used to reduce interference.
[0021] Cross-link interference (CLI) between different combinations of network devices and UEs are increasingly problematic with SBFD. For example, a network device may be operating in full duplex, transmitting to some UEs while receiving from other UEs in the same service area. As a result, a victim UE attempting to receive in a frequency band may experience CLI from nearby aggressor UEs that are transmitting. As such, UEs may measure and report CLI to the network device so that the network device can take steps to help mitigate the CLI, such as scheduling resources for UEs to reduce the CLI between UEs. However, current approaches use CLI measurement reporting that is relatively slow, such as layer 3 measurement and reporting. Therefore, an increased rate of measurement and reporting may be desired, for example in dynamic environments including in serving cells where UEs are moving relatively quickly.
[0022] As further described herein, techniques for CLI reporting and resource configurations are described. Such techniques may result in an increased rate of CLI measurement reporting, for example using layer 1 and / or layer 2 signaling. A UE may be configured by a network device to operate in an SBFD serving cell. The UE may then be configured with a CLI measurement configuration that indicates a set of resources for CLI measurements in the SBFD serving cell. The UE performs CLI measurements on downlink resources of the SBFD serving cell according to the CLI measurement configuration. The UE then sends a CLI measurement report to the network device. According to some aspects described herein, CLI reporting may use aspects of or other be associated with channel state information (CSI) reporting.
[0023] Aspects of CLI reporting and resource configurations are described herein with reference to a communications system using SBFD communications, including a description of different interferences, including CLI, in the context of SBFD communications. Signaling diagrams are then described for providing CLI configurations, measurements, and reporting. Finally, processes, systems, and apparatuses are described that support CLI reporting and resource configurations as further described herein.
[0024] FIG. 1 shows an example wireless communications system 100, according to one or more aspects described herein. In one or more embodiments, wireless communications system 100 supports one or more aspects of CLI reporting and resource configurations, as further described herein. Wireless communications system 100 includes one or more UE 102 that may be being served by (e.g., has an established radio resource control (RRC) connection with) a network device 104 via communication link 106. Coverage area 108 is the service area for the RF spectrum band utilized by network device 104 serving the UE 102 (e.g., a cell or serving cell, which may include multiple cells) . Although shown as a mobile device or smartphone, UE 102 can comprise any mobile or non-mobile computing device configured for wireless communication, such as a watch, or an extended reality (XR) device, including virtual reality (VR) or augmented reality (AR) devices. In some cases, UE 102 may be a system of components operating together as a UE 102.
[0025] The network device 104 may provide (serve) one or more serving cells utilizing a SBFD configuration. Wireless communications system 100 illustrates an example SBFD configuration for a component carrier 110 (which may also be referred to as a band, frequency band, or serving cell) that includes a quantity of subcarriers, such as OFDM subcarriers. The SBFD configuration includes a set of slots 112, which includes SBFD slots having both downlink resources 114 and uplink resources 116. In some embodiments, guard bands 118 may be provided to mitigate interference (e.g., CLI) between downlink and uplink signals. In some embodiments, slots 112 may be organized as a frame (e.g., radio frame) . Each SBFD slot 134 may span a quantity of OFDM symbols 122 (e.g., fourteen symbol periods) and be made up of a set of resource blocks 120 (e.g., physical resource blocks) spanning the frequency domain of the component carrier 110, where each resource block includes a quantity of subcarriers (e.g., 12 OFDM subcarriers per resource block) . In one example, the downlink resources 114 span eight resource blocks 124, in two frequency groups of four resource blocks each. The uplink resources 116 span two resource blocks 126, and are separated from the downlink resources 114 by two of guard bands 118 that each span one resource block 128.
[0026] In some embodiments, the component carrier 110 may include both SBFD slots 134 and one or more non-SBFD slots, such as a downlink slots 132 or an uplink slot 136, or both. In other embodiments, the component carrier 110 includes only SBFD slots 134. In some embodiments, the relative quantity of downlink resources 114 and uplink resources 116 may be changed via configuration. Although shown as uplink resources 116 having downlink resources 114 adjacent in both higher and lower frequencies, other configurations or arrangements of resources are possible consistent with techniques described herein. For example, a single set of downlink resources in contiguous subcarriers and a single set of uplink resources in contiguous subcarriers may be configured.
[0027] As further discussed herein, a UE 102 may receive a configuration for a SBFD serving cell of the network device 104, for example the component carrier 110, where the one or more subcarriers for downlink resources are frequency domain multiplexed (FDM) with one or more subcarriers for uplink resources.
[0028] FIG. 2 shows an example wireless communications system 200 deploying SBFD, according to one or more aspects described herein. In one or more embodiments, wireless communications system 200 supports one or more aspects of CLI reporting and resource configurations, as further described herein, and illustrates various interference types for in systems using SBFD.
[0029] Wireless communications system 200 includes a network device 104 serving a UE 102 and one or more additional of UE 206 using a SBFD serving cell having a coverage area 212. The SBFD serving cell of network device 104 uses one or more slots that are SBFD slots 202. Wireless communications system 200 also includes a network device 210 serving one or more UE 208 using a SBFD serving cell having a coverage area 214. The SBFD serving cell of network device 210 uses one or more slots that are SBFD slots 204.
[0030] The UE 102 may be served by the network device 104 on a downlink 216 for the SBFD slots 202. Another UE in the same serving cell as UE 102, for example the UE 206, may be served by the network device 104 on an uplink 218 for the SBFD slots 202. As such, the UE 102, attempting to receive on the downlink 216, may experience CLI 224 due to the transmissions by the UE 206 on the uplink 218. The CLI 224 may also be referred to or be intra-cell UE-to-UE co-channel inter-subband CLI, for example the interference at a receiving UE from a UE in the same cell that is transmitting on frequency resources (e.g., subcarriers) that do not overlap.
[0031] In addition, to the CLI 224, the UE 102 may experience the CLI 226. A UE in a different serving cell from the UE 102, for example the UE 208, may be served by the network device 210 on a downlink 234 and / or an uplink 232 for the SBFD slots 204. In some examples, the SBFD slots 202 and the SBFD slots 204 may occur during an overlapping time, but use a different set of frequency resources (e.g., different bands, different component carriers) . For example, the UE 208 may transmit on the uplink 232 for SBFD slot 204 during a same time as the UE 102 is attempting to receive on the downlink 216. As such, the UE 102 may experience the CLI 226 due to the transmissions by the UE 208 on the uplink 232. The CLI 226 may also be referred to or be inter-cell UE-to-UE co-channel inter-subband CLI, for example the interference at a receiving UE from a UE in a neighboring cell that is transmitting on frequency resources (e.g., subcarriers) that do not overlap.
[0032] In addition to CLI, the UE 102 may also experience co-channel interference. For example, the neighboring network device, network device 210, may transmit on the downlink 234 to UE 208. The UE 102, receiving on the downlink 216 from the network device 104, may experience interference 230.
[0033] Other forms of interference and CLI may also be present in the wireless communications system 200 using SBFD. In a first example, the network device 104 may experience network device self-interference 220. In a second example, the network device 104 may experience network device to network device co-channel inter-subband CLI 222 from a neighboring network device, the network device 210. In a third example, the network device 104 may experience network inter-cell UE to network device interference 228 (e.g., UE to network device UL co-channel interference) due to the transmissions by the UE 208 on the uplink 232.
[0034] As further described herein, the UE 102 may receive, from the network device 104, a CLI measurement configuration indicating a set of resources for CLI measurements for the SBFD serving cell of the network device 104. The UE 102 may then perform, according to the CLI measurement configuration, CLI measurements using at least a portion of the downlink resources, such as the downlink resources of the SBFD slots 202. As further described herein, in some embodiments, the measurements may be received signal strength indicator (RSSI) measurements (RSSI CLI measurements) . In other embodiments, the measurements may be sounding reference signal (SRS) measurements (SRS CLI measurements) . The UE 102 may then transmit, to the network device 104 a report that is based at least in part on the performed CLI measurements. The report may be transmitted on the uplink 232. As further described herein, the report may be a layer 1 or layer 2 report. That is the reporting may use layer 1 or layer 2 resources to report the CLI measurement results.
[0035] FIG. 3 shows an example signal flow 300, according to one or more aspects described herein. In one or more embodiments, signal flow 300 supports one or more aspects of CLI reporting and resource configurations, as further described herein. Signal flow 300 includes signaling and actions by and between a UE 102, network device 104, and one or more UE 302. In some examples, the one or more UE 302 may be examples of UE described herein, including the UE 206 and / or the UE 208.
[0036] At 310, the UE 102 receives an indication of a SBFD configuration used by the network device 104 (e.g., of a SBFD serving cell served by the network device 104) . In some embodiments, the configuration of the SBFD serving cell identifies or otherwise indicates one or more subcarriers for downlink resources and one or more subcarriers for uplink, for example as further described with reference to wireless communications system 100. For example, the UE 102 may receive one or more control messages, such as system information (e.g., one or more master information blocks or system information blocks) and RRC signaling (e.g., RRC setup signaling) that identify for the UE 102 the SBFD configuration for the serving cell.
[0037] At 312, UE 102 may transmit UE capability signaling to the network device 104. In one or more examples, the UE capability signaling may be RRC signaling. In some embodiments, the UE capability signaling optionally may identify a UE capability to be configured with RSSI resources for the CLI measurements. The UE capability signaling may also identify a maximum number of values that the UE can report for RSSI CLI measurements (e.g. MaxnrofReportedCLI-RSSI) .
[0038] In other embodiments, the UE capability signaling may identify a UE capability to be configured with SRS resources for the CLI measurements. In yet other embodiments, the signaling may indicate a UE capability to be configured with both RSSI resources and SRS resources. The UE capability signaling may identify a maximum number of values that the UE can report for SRS CLI measurements (e.g. MaxnrofReportedSRS-RSRP) . The maximum number of values that the UE can report for RSSI CLI may be the same or different than the maximum number of values that the UE can report for SRS-RSRP, for example when both RSSI CLI and SRS-RSRP values are reported in a same report.
[0039] In some embodiments, the UE capability signaling may identify a UE capability to transmit a single report based at least in part on both performed CLI measurements and CSI measurements (e.g., the UE capability signaling may specify a quantity or number of reports in a single report, n) . For example, the CSI measurements can be CSI measurements for link adaptation, beam management, or both.
[0040] At 314, the UE 102 may receive from the network device 104 configuration signaling indicating a configuration for the UE 102 to use for CLI measurements and reporting by the UE 102. The configuration signaling indicates resources for the UE 102 to use to measure CLI on the SBFD serving cell. The configuration signaling may also provide a reporting configuration for the UE 102 to use to report the CLI measurements, as further discussed herein, including with reference to the CLI measurement report at 324.
[0041] In one or more examples, the configuration signaling include an indication of CLI measurement resources (e.g., cli-ResourceForCrossLInkInterference) . In some embodiments the indication of the CLI measurement resources may be in CSI reporting configuration signaling (e.g., CSI-ReportConfig) . In some embodiments, the CLI measurement configuration is associated with a CSI report configuration identifier (e.g., CSI-ResourceConfigId) of a CSI resource configuration, the CSI resource configuration identifying a list of CLI reference signal resources. For example, the corresponding identifier (e.g., CSI-ResourceConfigId) is associated with a CLI resource list (e.g., CLI-RS-ResourceList) , which may also be referred to as a list of CLI reference signal resources.
[0042] In one or more embodiments, the list of CLI reference signal resources may include one or more SRS resources for CLI measurements and one or more RSSI resources for CLI measurements. For example, the list of CLI reference signal resources (e.g., CLI-RS-ResourceList) may include one or more SRS resources for CLI measurements (e.g., SRS-ResourceConfigCLI) and one or more RSSI resources for CLI measurements (e.g., RSSIResourceConfigCLI) .
[0043] In one or more embodiments, the CLI measurement configuration includes a list of CLI reference signal resources (e.g., CLI-RS-ResourceList) , and each CLI reference signal resource in the list of CLI reference signal resources is associated with a same serving cell index (e.g., ServCellIndex) as each other CLI reference signal resource in the list of CLI reference signal resources. In some embodiments, additionally or alternatively, the CLI measurement configuration includes a list of CLI reference signal resources (e.g., CLI-RS-ResourceList) , and each CLI reference signal resource in the list of CLI reference signal resources is associated with a same bandwidth part (BWP) identifier (e.g., BWP-Id) as each other CLI reference signal resource in the list of CLI reference signal resources. In some embodiments, the UE ignores the carrier in the CSI reporting configuration (e.g., CSI-ReportConfig) , ignores the BWP identifier (e.g., bwp-Id) in the CSI resource configuration (e.g., CSI-ResourceConfig) , or both. In some embodiments, the UE ignores the reference serving cell index (e.g., refServCellIndex) and the reference BWP (e.g., ref-BWP) in the SRS resource configuration for CLI (e.g., SRS-ResourceConfirgCLI) , if configured. Additionally, or alternatively, the UE ignores the reference serving cell index (e.g., refServCellIndex) and the reference BWP (e.g., ref-BWP) in the SRS resource configuration for CLI (e.g., SRS-ResourceConfirgCLI) , if configured. Additionally, or alternatively, the UE ignores the reference serving cell index (e.g., refServCellIndex) in the RSSI resource configuration (e.g., RSSI-ResourceConfigCLI) , if configured.
[0044] In one or more embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and SRS resources identified by the list of CLI reference signal resources are within the uplink resources of the SBFD serving cell. In an example, if the list of CLI reference signal resources (e.g., CLI-RS-ResourceList) includes the SRS resources (e.g., SRS-ResourceConfigCLI) resources, SRS resources are configured within an uplink sub-band configuration, for example the configured uplink resources of the SBFD serving cell.
[0045] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and the RSSI resources identified by the list of CLI reference signal resources are within a downlink BWP that spans at least a portion of both the one or more subcarriers for the downlink resources and the one or more subcarriers for the uplink resources. In some embodiments, the RSSI resources identified by the list of CLI reference signal resources are within a portion of the one or more subcarriers for the downlink resources. In some embodiments, the RSSI resources identified by the list of CLI reference signal resources are within a portion of the one or more subcarriers for the uplink resources, and SRS resources are identified by the list of CLI reference signal resources. In one or more embodiments, the RSSI resources being within the downlink BWP, within the portion of downlink resources, or within the portion of uplink resources means that the starting physical resource block (PRB) (e.g., startPRB) and number of PRBs (e.g., nrofPRBs) for each resources are within the downlink BWP, within the portion of downlink resources, or within the portion of uplink resources, respectively.
[0046] In one or more embodiments, the CSI resource configuration identifier associated with the CLI measurement configuration indicates a resource type of a set of resource types for resources in a list of CLI reference signal resources (e.g., CLI-RS-ResourceList) . The CLI measurements may be performed according to the resource type. The resource type may be one of aperiodic resources, semi-persistent resources, or periodic resources. In some embodiments, the UE 102 determines (identifies) the resource type for the CSI resource configuration identifier.
[0047] In one or more embodiments, if the list of CLI reference signal resources (e.g., CLI-RS-ResourceList) includes SRS resources or RSSI resources for CLI (e.g., SRS-ResourceConfigCLI or RSSI-ResourceConfigCLI) , the time domain behavior of each SRS resource is given by an indicator of a resource type in the configuration for SRS or RSSI resources, respectively. In some embodiments, for RSSI resources for CLI, an information element RSSI-ResourceConfigCLI may be updated indicate one of resourceType = aperiodic, semi-persistent, or periodic. In some cases, for current techniques, only periodic resource types for SRS or RSSI CLI are allowed to be configured, as opposed to any of aperiodic, semi-persistent, or periodic as described for some embodiments herein. In one or more embodiments, when the list of CLI reference signal resources includes RSSI resources for the CLI measurements, an RSSI resource configuration for CLI indicates a slot offset for the aperiodic resources, or a periodicity and offset for the semi-persistent resources.
[0048] In one or more embodiments, at 314 the UE 102 may receive RRC signaling indicating a number of SRS reports (e.g., nrofReportedSRS-RSRP) to report for different CLI RSSI for each report setting in a single report. In some examples, the number of SRS reports (e.g., nrofReportedSRS-RSRP) is restricted (limited) to not be more than a maximum number of reports indicated in UE capability signaling (e.g., MaxnrofReportedCLI-RSSI) . In one or more embodiments, the configuration indicates for the report to include the resource index for the SRS CLI resources (e.g., SRS-ResourceConfigCLI) resource index in the corresponding resource list (e.g., CLI-RS-ResourceList) . In some embodiments, the UE 102 may be configured to report a certain quantity of (e.g., nrofReportedCLI-RSSI) worst (e.g., SRS-ResourceConfigCLI) resources. In other embodiments, the quantity of best resources is reported. The reporting for the first resource for the SRS-RSRP measurement for CLI may be absolute (e.g., 7 bits representing the absolute measurement values) , but for other resources may be differential (e.g., 4 bits representing the measurement values relative to the absolute value) , as further specified herein. The reporting for CLI applicable to CLI-RSSI-RI, CLI-RSSI, and differential CLI-RSSI may be similar.
[0049] At 316, the UE 102 may engage in communications with the network device 104 via at least the SBFD serving cell, including data and control.
[0050] At 318, the UE 102 receives a CLI control message. In some embodiments, the CLI control message is a MAC CE, for example as described with reference to the MAC CE 401. In one or more embodiments, the MAC CE indicates for the UE 102 to activate the set of resources for the CLI measurements, and identifies the SBFD serving cell. In some embodiments, the MAC CE includes an identifier indicating semi-persistent resources of a list of CLI reference signal resources.
[0051] In other embodiments, the CLI control message is a DCI message, for example as described with reference to the CLI resource signaling 402 and / or the CLI resource signaling 403. In some embodiments, a candidate slot for the CLI measurements is based at least in part on a slot offset value, where the CLI measurements are performed in an SBFD slot subsequent to the candidate slot based on the candidate slot being a non-SBFD slot. The UE 102 may determine the candidate slot. In some embodiments, the slot is the first SBFD slot following the candidate slot.
[0052] At 320, the UE 102 may optionally provide an acknowledgement of the received CLI control message, for example a received MAC CE (e.g., MAC CE 401) . In some embodiments, the UE 102 determines candidate slots for the CLI measurements based on a quantity of SBFD slots following the slot in which the acknowledgment was transmitted and received. In some embodiments, the quantity of slots may be determined in the case where the CLI-RS resources are semi-persistently configured resources.
[0053] At 322, the UE 102 performs CLI measurements using at least a portion of the downlink resources of the SBFD serving cell. The UE 102 listens for and receive CLI signals (e.g., SRS, or signals for the RSSI measurements) according to the CLI measurement configuration at 314 and based on the CLI control message at 318. Such CLI signals may be transmitted by one or more UE 302.
[0054] At 324, the UE 102 transmits a report to the network device 104 that includes CLI measurement results. In some embodiments, the report is transmitted by UE 102 using layer 1 resources, according to a CLI reporting field configuration. In other embodiments, the report is transmitted by UE 102 using layer 2 resources, according to the CLI reporting field configuration.
[0055] In one or more embodiments, the CLI reporting fields for the report at 324 may be specified by Table 1, which specifies the bitwidth for the CSI-RS resource indicator (CRI) , SRS-RSRP, CLI-RSSI, differential RSRP, and differential RSSI:
[0056] Table 1: Bit-width for CLI report fields
[0057] where is the number of SRS resources for CLI (e.g., SRS-ResourceConfigCLI resources) in the corresponding list of CLI resources (e.g., CLI-RS-ResourceList) , and is the number of RSSI resources for CLI (e.g., RSSI-ResourceConfigCLI resources) in the corresponding list of CLI resources (e.g., CLI-RS-ResourceList) . Although Table 1 shows a particular quantity and ordering of bits in the CLI report, other orderings or quantities may be used consistent with the description provided herein.
[0058] In one or more embodiments, a mapping order for the CLI fields of a particular one report (e.g., #n) for the report at 324 may be specified by Table 2:
[0059] Table 2: Mapping order of CLI report fields of one report for CLI-RSSI and / or SRS-RSRP reporting
[0060] In Table 2, for each row, the bit width is given by the corresponding field provided by Table 1. As further discussed herein, for example with reference to the UE capability signaling at 312, the UE 102 may be configured with one or both of a set of SRS resources (e.g., SRS-ResourceListConfigCLI) or a set of RSSI resources (e.g., RSSI-ResourceListConfigCLI) . Although Table 2 shows a particular quantity and ordering of fields in the CLI report, other orderings or quantities may be used consistent with the description provided herein.
[0061] In one or more embodiments, a maximum number (quantity) of report CLI measurements of RSSI (e.g., MaxnrofReportedCLI-RSSI) , or a maximum number (quantity) of report CLI measurements of SRS resources (e.g., MaxnrofReportedCLI-SRS) , or both, may be used for the UE 102. In some embodiments, the maximum number for RSSI and / or SRS may be subject to a UE capability, for example as reported by the UE 102 at 312. In some embodiments, the maximum number for RSSI is the same for SRS. In other embodiments, the maximum number for RSSI is different than for SRS. In some embodiments, these reported maximum values may different than the when the UE indicates the UE capability to report both CLI-RSSI and SRS-RSRP in a single report. In some examples, the corresponding report quantity (e.g., reportQuantity) in the CSI reporting configuration (e.g., CSI-ReportConfig) will be CLI-RSSI and SRS-RSRP, respectively.
[0062] In one or more embodiments, the CLI measurement report 324 may be or include a report for both CLI-RSSI and SRS-RSRP. In some embodiments, the UE 102 may be configured to provide a single report including both CLI-RSSI and SRS-RSRP. In some examples, two or more relative priority levels may be defined, such where a priority 0 may be defined as a relatively higher priority than a priority 1. In some embodiments, priority 0 may include SRS-RSRP-RI #1, SRS-RSRP-RI #2, SRS-RSRP, and differential SRS-RSRP; and priority 1 may include CLI-RSSI-RI #1, CLI-RSSI-RI #2, CLI-RSSI, and differential CLI-RSSI. In another embodiment, priority 0 may include SRS-RSRP-RI #1, SRS-RSRP, CLI-RSSI-RI #1, and CLI-RSSI; and priority 1 may include SRS-RSRP-RI #2, differential SRS-RSRP, CLI-RSSI-RI #2, and differential CLI-RSSI. In another embodiment, all CLI reports with a certain report (e.g., report #n) have a same priority level, and in some examples all CLI reports may be dropped together (e.g., if needed) .
[0063] In one or more embodiments, the CLI measurement report 324 may be, include, or be included in a CSI report. In one or more embodiments, the configuration of the CLI measurement report 324, or a report including CLI measurement report 324, may be based on a UE capability to include both CLI reports and CSI reports in a single report. In one or more embodiments, the priority of CLI reports may be determined relative to CSI reports. In some embodiments, the CLI measurement report is given higher priority than the CSI report. In other embodiments, the CLI report is given lower priority than the CSI report if the CSI report carries layer 1 RSRP information (e.g., L1-RSRP) and / or layer 1 SINR information (e.g., L1-SINR) , and the CLI report is given higher priority than the CSI report if the CSI report carries other measurement information than L1-RSRP and / or L1-SINR. In yet other embodiments, the CLI report is given lower priority than the CSI report.
[0064] FIG. 4A shows an example MAC CE 401, according to one or more aspects described herein. In one or more embodiments, MAC CE 401 supports one or more aspects of CLI reporting and resource configurations, as further described herein.
[0065] In one or more embodiment, the CLI resources may be semi-persistently scheduled. For example, the CLI resources in a resource list for CLI references signals (e.g., CLI-RS-ResourceList) may be configured with a resource type for the CLI resources (e.g., resourceType) set as semipersistent. MAC CE 401 may then be used to activate or deactivate the CLI resources that are semi-persistently scheduled.
[0066] MAC CE 401 includes a CLI-RS-ResourceList Cell ID field 412, a SP CLI-RS-ResourceList ID field 414, an activation / deactivation (A / D) field 416, and one or more reserved (R) bits. The CLI-RS-ResourceList Cell ID field 412 indicates the identity of the serving cell (e.g., a SBFD serving cell) , which contains the activated / deactivated SP CLI-RS-ResourceList. The SP CLI-RS-ResourceList ID field 414 indicates the identifier of the SP CLI-RS-ResourceList identified by the CLI measurement configuration (e.g., csi-ResourceConfigId) that is to be activated or deactivated by the MAC CE 401. In some embodiments, the length of the SP CLI-RS-ResourceList ID field 414 is 7 bits. The A / D field 416 indicates whether to activate or deactivate the indicated SP CLI-RS-ResourceList. In some embodiments, the field is set to 1 to indicate activation, otherwise it indicates deactivation (e.g., when set to 0) .
[0067] In one or more embodiments, not all slots of a serving cell are available for CLI measurements. For example, one or more slots of the serving cell may be configured for communication other than using SBFD. Put differently, in some examples, not all slots are SBFD slots. As such, for CLI resources configured as periodic or semi-persistent (e.g., where the higher layer parameter resourceType is set to periodic or semi-persistent) , candidate slots in which the configured CLI-RS may be used for CLI measurements include the SBFD slots satisfying the following equation:
[0068] (e.g., may be a number of slots in a frame for a SCS) . nf (e.g., may be a frame number) . PCLI-RS and OCLI-RS are higher layer configured parameters for periodicity (in slots) and slot offset, respectively. μ, is the subcarrier spacing (SCS) of the BWP in which sub-bands in the SBFD slots are configured. is the slot number within a frame for SCS configuration μ, .
[0069] For a CLI-RS resource configured as semi-persistent (e.g., where the higher layer parameter resourceType is set to semi-persistent) , the slot number are SBFD slots after the slot where n is the slot where the UE would transmit a PUCCH with HARQ-ACK information corresponding to the PDSCH carrying the MAC CE activation command for semi-persistent CLI, and μ2 is the SCS of the PUCCH.
[0070] FIG. 4B shows an example of CLI resource signaling 402, according to one or more aspects described herein. FIG. 4C shows another example of CLI resource signaling 403, according to one or more aspects described herein. In one or more embodiments, CLI resource signaling 402 and CLI resource signaling 403 support one or more aspects of CLI reporting and resource configurations, as further described herein.
[0071] In one or more embodiment, the CLI resources may be aperiodically scheduled. For example, the CLI resources in a resource list for CLI references signals (e.g., CLI-RS-ResourceList) may be configured with a resource type for the CLI resources (e.g., resourceType) set as a periodic. A downlink control information (DCI) message 422 may then be used to trigger (schedule) the CSI RS resources that may be used for CLI measurements.
[0072] For a CLI-RS resource configured as aperiodic (e.g., where the higher layer parameter resourceType is set to aperiodic) , the candidate slots in which the triggered CLI RS resource may be used for CLI measurements it the first SBFD slot that is not earlier than n+k, where n is the slot in which the triggering DCI is received, and k is the higher layer (e.g., RRC) configured parameter slotOffset.
[0073] As illustrated with reference to CLI resource signaling 402, a DCI message 422 is received in slot 426, and slot 428 is a SBFD slot. The DCI message 422 indicates CLI resources that can used by a UE for CLI measurements. In one or more embodiments, k indicates slot 428 (e.g., a two slots following the slot 426 in which the DCI message 422 was received) for the aperiodic CLI reference signal resources 424. In the example of CLI resource signaling 402, because slot 428 is a SBFD slot, CLI measurements may be performed by the UE in slot 428.
[0074] As illustrated with reference to CLI resource signaling 403, a DCI message 432 is received in slot 436, slot 438 is not a SBFD slot, but slot 440 is a SBFD slot. The DCI message 432 indicates CLI resources that can used by a UE for CLI measurements. In one or more embodiments, k indicates slot 438 following the slot 436 in which the DCI message 432 was received) for the aperiodic CLI reference signal resources 444. In the example of CLI resource signaling 403, because slot 438 is not a SBFD slot, CLI measurements may not be performed by the UE in slot 438. A next SBFD slot following slot 438 in this example is the subsequent slot, slot 440. As such, CLI measurements may be performed by the UE in slot 440 in response to the DCI message 432.
[0075] FIG. 5 shows an example method 500 of wireless communication by a UE. In some cases, the UE may be the wireless device 802 or UE 102. In some cases, the method 500 may be performed by a baseband processor of the UE. In some embodiments, the baseband processor may include one or more processor cores, and memory that is coupled to the processor core (s) . The memory may store instructions that, when executed by the processor core (s) , causes the baseband processor to perform the operations of the method 500. As the baseband processor performs the operations of the method 500, the baseband processor may also cause other components of the UE to perform, or discontinue, various operations.
[0076] At 502, the method 500 includes receiving an SBFD configuration for a SBFD serving cell. In some embodiments, the method 500 includes receiving an indication of a configuration of a SBFD serving cell, the configuration identifying one or more subcarriers for downlink resources of the SBFD serving cell that are frequency domain multiplexed with one or more subcarriers for uplink resources of the SBFD serving cell.
[0077] At 504, the method 500 includes receiving a CLI measurement configuration. In some embodiments, the method 500 receiving a CLI measurement configuration indicating a set of resources for CLI measurements for the SBFD serving cell.
[0078] At 506, the method 500 includes processing CLI measurements. In some embodiments, the method 500 processing, according to the CLI measurement configuration, the CLI measurements obtained using at least a portion of the downlink resources.
[0079] At 508, the method 500 includes transmitting a CLI measurement report. In some embodiments, the method 500 transmitting a report based at least in part on the performed CLI measurements.
[0080] In one or more embodiments, the method further includes receiving a CSI report configuration indicating the CLI measurement configuration. In some embodiments, the CLI measurement configuration is associated with a CSI report configuration identifier of a CSI resource configuration, the CSI resource configuration identifying a list of CLI reference signal resources.
[0081] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, each CLI reference signal resource in the list of CLI reference signal resources being associated with a same serving cell index and a same BWP identifier as each other CLI reference signal resource in the list of CLI reference signal resources.
[0082] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and SRS resources identified by the list of CLI reference signal resources are within the uplink resources of the SBFD serving cell.
[0083] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and RSSI resources identified by the list of CLI reference signal resources are within a downlink BWP that spans at least a portion of both the one or more subcarriers for the downlink resources and the one or more subcarriers for the uplink resources.
[0084] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and RSSI resources identified by the list of CLI reference signal resources are within a portion of the one or more subcarriers for the downlink resources.
[0085] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and RSSI resources identified by the list of CLI reference signal resources are within a portion of the one or more subcarriers for the uplink resources, and SRS resources are identified by the list of CLI reference signal resources.
[0086] In one or more embodiments, the method further includes determining, for a CSI resource configuration identifier associated with the CLI measurement configuration, a resource type of a plurality of resource types for resources in a list of CLI reference signal resources, where the CLI measurements are processed according to the resource type, and the resource type includes one of aperiodic resources, semi-persistent resources, or periodic resources. In some embodiments, the list of CLI reference signal resources includes RSSI resources for the CLI measurements, and a RSSI resource configuration for CLI indicates a slot offset for the aperiodic resources or a periodicity and offset for the semi-persistent resources.
[0087] In one or more embodiments, the method further includes receiving a MAC CE that indicates to activate the set of resources for the CLI measurements, the MAC CE identifying the SBFD serving cell, and an identifier indicating semi-persistent resources of a list of CLI reference signal resources.
[0088] In one or more embodiments, the method further includes receiving a MAC CE that indicates to activate the set of resources for the CLI measurements; transmitting, in a slot, an acknowledgment of the received MAC CE; and determining candidate slots for the CLI measurements based at least in part on a quantity of SBFD slots following the slot in which the acknowledgment was transmitted.
[0089] In one or more embodiments, the method further includes receiving a DCI message scheduling the at least a portion of the downlink resources for the CLI measurements; determining a candidate slot for the CLI measurements based at least in part on a slot offset value, where the CLI measurements are obtained from measurements in an SBFD slot subsequent to the candidate slot based at least in part on the candidate slot being a non-SBFD slot.
[0090] In one or more embodiments, the method further includes identifying layer 1 or layer 2 resources to use to transmit the report according to a CLI reporting field configuration, the report transmitted using the layer 1 or layer 2 resources. In one or more embodiments, the method further includes transmitting capability signaling identifying a UE capability to be configured with one or more of RSSI resources or SRS resources for the CLI measurements.
[0091] In one or more embodiments, the method further includes transmitting capability signaling identifying one or both of a maximum number of values that a UE can report for RSSI CLI measurements or a maximum number of values that the UE can report for SRS CLI measurements.
[0092] In one or more embodiments, the method further includes transmitting capability signaling identifying a UE capability to transmit a single report based at least in part on both the processed CLI measurements and CSI measurements. In one or more embodiments, the method further includes obtaining CSI measurements; and determining a relative priority between reporting the processed CLI measurements and the obtained CSI measurements, where the report is transmitted according to the relative priority.
[0093] The method 500 may be variously embodied, extended, or adapted, as described in the following paragraphs and elsewhere in this description.
[0094] FIG. 6 shows an example method 600 of wireless communication by a network device. In one or more embodiments, method 600 supports one or more aspects of CLI reporting and resource configurations, as further described herein. In some cases, the network device may be the network device 104, network device 820, or one of the other network devices described herein. The method 600 may be performed using a processor, a transceiver (e.g., main radio) , or other components of the network device.
[0095] At 602, the method 600 includes transmitting an SBFD configuration for a SBFD serving cell, including both downlink and uplink resources. In some embodiments, the method 600 includes transmitting an indication of a configuration of a SBFD serving cell, the configuration identifying one or more subcarriers for downlink resources of the SBFD serving cell that are frequency domain multiplexed with one or more subcarriers for uplink resources of the SBFD serving cell.
[0096] At 604, the method 600 includes transmitting a CLI measurement configuration. In some embodiments, the method 600 includes transmitting, to a UE, a CLI measurement configuration indicating a set of resources for CLI measurements for the SBFD serving cell.
[0097] At 606, the method 600 includes receiving a CLI measurement report. In some embodiments, the method 600 includes receiving, from the UE, a report based at least in part on the CLI measurements performed by the UE according to the CLI measurement configuration using at least a portion of the downlink resources.
[0098] In one or more embodiments, the method further includes transmitting a CSI report configuration indicating the CLI measurement configuration. In some embodiments, the CLI measurement configuration is associated with a CSI report configuration identifier of a CSI resource configuration, the CSI resource configuration identifying a list of CLI reference signal resources.
[0099] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, each CLI reference signal resource in the list of CLI reference signal resources being associated with a same serving cell index and a same BWP identifier as each other CLI reference signal resource in the list of CLI reference signal resources.
[0100] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and SRS resources identified by the list of CLI reference signal resources are within the uplink resources of the SBFD serving cell.
[0101] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and RSSI resources identified by the list of CLI reference signal resources are within a downlink BWP that spans at least a portion of both the one or more subcarriers for the downlink resources and the one or more subcarriers for the uplink resources.
[0102] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and RSSI resources identified by the list of CLI reference signal resources are within a portion of the one or more subcarriers for the downlink resources.
[0103] In some embodiments, the CLI measurement configuration includes a list of CLI reference signal resources, and RSSI resources identified by the list of CLI reference signal resources are within a portion of the one or more subcarriers for the uplink resources, and SRS resources are identified by the list of CLI reference signal resources.
[0104] In one or more embodiments, the method further includes determining, for a CSI resource configuration identifier associated with the CLI measurement configuration, a resource type of a plurality of resource types for resources in a list of CLI reference signal resources, where the CLI measurements are performed by the UE according to the resource type, and the resource type includes one of aperiodic resources, semi-persistent resources, or periodic resources. In some embodiments, the list of CLI reference signal resources includes RSSI resources for the CLI measurements, and a RSSI resource configuration for CLI indicates a slot offset for the aperiodic resources or a periodicity and offset for the semi-persistent resources.
[0105] In one or more embodiments, the method further includes transmitting, to the UE, a MAC CE that indicates to activate the set of resources for the CLI measurements, the MAC CE identifying the SBFD serving cell, and an identifier indicating semi-persistent resources of a list of CLI reference signal resources.
[0106] In one or more embodiments, the method further includes transmitting, to the UE, a MAC CE that indicates to activate the set of resources for the CLI measurements; receiving, from the UE in a slot, an acknowledgment of the received MAC CE; and determining candidate slots for the CLI measurements based at least in part on a quantity of SBFD slots following the slot in which the acknowledgment was received.
[0107] In one or more embodiments, the method further includes transmitting, to the UE, a DCI message scheduling the at least a portion of the downlink resources for the CLI measurements; determining a candidate slot for the CLI measurements based at least in part on a slot offset value, where the CLI measurements are performed by the UE in an SBFD slot subsequent to the candidate slot based at least in part on the candidate slot being a non-SBFD slot.
[0108] In one or more embodiments, the method further includes identifying layer 1 or layer 2 resources to use to transmit the report according to a CLI reporting field configuration, the report transmitted using the layer 1 or layer 2 resources. In one or more embodiments, the method further includes receiving, from the UE, capability signaling identifying a UE capability to be configured with one or more of RSSI resources or SRS resources for the CLI measurements.
[0109] In one or more embodiments, the method further includes receiving, from the UE, capability signaling identifying one or both of a maximum number of values that a UE can report for RSSI CLI measurements or a maximum number of values that the UE can report for SRS CLI measurements.
[0110] In one or more embodiments, the method further includes receiving, from the UE, capability signaling identifying a UE capability to transmit a single report based at least in part on both the CLI measurements and CSI measurements. In one or more embodiments, the method further includes determining a relative priority between reporting the CLI measurements and the CSI measurements, where the report is received according to the relative priority.
[0111] The method 600 may be variously embodied, extended, or adapted, as described in the following paragraphs and elsewhere in this description.
[0112] Embodiments contemplated herein include one or more non-transitory computer-readable media storing instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform one or more elements of the method 500 or 600. In the context of method 500, this non-transitory computer-readable media may be, for example, a memory of a UE (such as a memory 806 of a wireless device 802 that is a UE, as described herein) or of a processor. In the context of method 600, this non-transitory computer-readable media may be, for example, a memory of a network device (such as a memory 824 of a network device 820, as described herein) .
[0113] Embodiments contemplated herein include an apparatus having logic, modules, or circuitry to perform one or more elements of the method 500 or 600. In the context of method 500, this apparatus may be, for example, an apparatus of a UE (such as a wireless device 802 that is a UE) . In the context of method 600, this apparatus may be, for example, an apparatus of a network device (such as a network device 820, as described herein) .
[0114] Embodiments contemplated herein include an apparatus having one or more processors and one or more computer-readable media, using or storing instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of the method 500 or 600. In the context of method 500, this apparatus may be, for example, an apparatus of a UE (such as a wireless device 802 that is a UE, as described herein) . In the context of the method 600, this apparatus may be, for example, an apparatus of a network device (such as a network device 820, as described herein) .
[0115] Embodiments contemplated herein include a signal as described in or related to one or more elements of the method 500, or 600.
[0116] Embodiments contemplated herein include a computer program or computer program product having instructions, wherein execution of the program by a processor causes the processor to carry out one or more elements of the method 500 or 600. In the context of method 500, the processor may be a processor of a UE (such as a processor (s) 804 of a wireless device 802 that is a UE, as described herein) , and the instructions may be, for example, located in the processor and / or on a memory of the UE (such as a memory 806 of a wireless device 802 that is a UE, as described herein) . In the context of method 600, the processor may be a processor of a network device (such as a processor (s) 822 of a network device 820, as described herein) , and the instructions may be, for example, located in the processor and / or on a memory of the network device (such as a memory 824 of a network device 820, as described herein) .
[0117] FIG. 7 illustrates an example architecture of a wireless communication system, according to embodiments described herein. The following description is provided for an example wireless communication system 700 that operates in conjunction with the LTE system standards or specifications and / or 5G or NR system standards or specifications, as provided by 3GPP technical specifications.
[0118] As shown, the wireless communication system 700 includes UE 702 and UE 704 (although any number of UEs may be used) . In this example, the UE 702 and the UE 704 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices connectable to one or more cellular networks) but may also comprise any mobile or non-mobile computing device configured for wireless communication.
[0119] The UE 702 and UE 704 may be configured to communicatively couple with a RAN 706. In embodiments, the RAN 706 may be NG-RAN, E-UTRAN, etc. The UE 702 and UE 704 utilize connections (or channels) (shown as connection 708 and connection 710, respectively) with the RAN 706, each of which comprises a physical communications interface. The RAN 706 can include one or more network devices, such as base station 712 and base station 714, that enable the connection 708 and connection 710.
[0120] In this example, the connection 708 and connection 710 are air interfaces to enable such communicative coupling and may be consistent with RAT (s) used by the RAN 706, such as, for example, an LTE and / or NR.
[0121] In some embodiments, the UE 702 and UE 704 may also directly exchange communication data via a sidelink interface 716. The UE 704 is shown to be configured to access an access point (shown as AP 718) via connection 720. By way of example, the connection 720 can comprise a local wireless connection, such as a connection consistent with any IEEE 802.11 protocol, wherein the AP 718 may comprise a router. In this example, the AP 718 may be connected to another network (for example, the Internet) without going through a CN 724.
[0122] In embodiments, the UE 702 and UE 704 can be configured to communicate using orthogonal frequency division multiplexing (OFDM) communication signals with each other or with the base station 712 and / or the base station 714 over a multicarrier communication channel in accordance with various communication techniques, such as, but not limited to, an orthogonal frequency division multiple access (OFDMA) communication technique (e.g., for downlink communications) or a single carrier frequency division multiple access (SC-FDMA) communication technique (e.g., for uplink and ProSe or sidelink communications) , although the scope of the embodiments is not limited in this respect. The OFDM signals can comprise a plurality of orthogonal subcarriers.
[0123] In some embodiments, all or parts of the base station 712 or base station 714 may be implemented as one or more software entities running on server computers as part of a virtual network. In addition, or in other embodiments, the base station 712 or base station 714 may be configured to communicate with one another via interface 722. In embodiments where the wireless communication system 700 is an LTE system (e.g., when the CN 724 is an EPC) , the interface 722 may be an X2 interface. The X2 interface may be defined between two or more network devices of a RAN (e.g., two or more eNBs and the like) that connect to an EPC, and / or between two eNBs connecting to the EPC. In embodiments where the wireless communication system 700 is an NR system (e.g., when CN 724 is a 5GC) , the interface 722 may be an Xn interface. The Xn interface is defined between two or more network devices of a RAN (e.g., two or more gNBs and the like) that connect to the 5GC, between a base station 712 (e.g., a gNB) connecting to the 5GC and an eNB, and / or between two eNBs connecting to the 5GC (e.g., CN 724) .
[0124] The RAN 706 is shown to be communicatively coupled to the CN 724. The CN 724 may comprise one or more network elements 726, which are configured to offer various data and telecommunications services to customers / subscribers (e.g., users of UE 702 and UE 704) who are connected to the CN 724 via the RAN 706. The components of the CN 724 may be implemented in one physical device or separate physical devices including components to read and execute instructions from a machine-readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium) .
[0125] In embodiments, the CN 724 may be an EPC, and the RAN 706 may be connected with the CN 724 via an S1 interface 728. In embodiments, the S1 interface 728 may be split into two parts, an S1 user plane (S1-U) interface, which carries traffic data between the base station 712 or base station 714 and a serving gateway (S-GW) , and the S1-MME interface, which is a signaling interface between the base station 712 or base station 714 and mobility management entities (MMEs) .
[0126] In embodiments, the CN 724 may be a 5GC, and the RAN 706 may be connected with the CN 724 via an NG interface 728. In embodiments, the NG interface 728 may be split into two parts, an NG user plane (NG-U) interface, which carries traffic data between the base station 712 or base station 714 and a user plane function (UPF) , and the S1 control plane (NG-C) interface, which is a signaling interface between the base station 712 or base station 714 and access and mobility management functions (AMFs) .
[0127] Generally, an application server 730 may be an element offering applications that use internet protocol (IP) bearer resources with the CN 724 (e.g., packet switched data services) . The application server 730 can also be configured to support one or more communication services (e.g., VoIP sessions, group communication sessions, etc. ) for the UE 702 and UE 704 via the CN 724. The application server 730 may communicate with the CN 724 through an IP communications interface 732.
[0128] FIG. 8 illustrates an example system 800 for performing signaling 838 between a wireless device 802 and a network device 820, according to embodiments described herein. The system 800 may be a portion of a wireless communication system as herein described. The wireless device 802 may be, for example, a UE of a wireless communication system. The network device 820 may be, for example, a base station (e.g., an eNB or a gNB) or a radio head of a wireless communication system.
[0129] The wireless device 802 may include one or more processor (s) 804. The processor (s) 804 may execute instructions such that various operations of the wireless device 802 are performed, as described herein. The processor (s) 804 may include one or more baseband processors implemented using, for example, a central processing unit (CPU) , a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
[0130] The wireless device 802 may include a memory 806. The memory 806 may be a non-transitory computer-readable storage medium that stores instructions 808 (which may include, for example, the instructions being executed by the processor (s) 804) . The instructions 808 may also be referred to as program code or a computer program. The memory 806 may also store data used by, and results computed by, the processor (s) 804.
[0131] The wireless device 802 may include one or more transceiver (s) 810 (also collectively referred to as a transceiver 810) that may include radio frequency (RF) transmitter and / or receiver circuitry that use the antenna (s) 812 of the wireless device 802 to facilitate signaling (e.g., the signaling 838) to and / or from the wireless device 802 with other devices (e.g., the network device 820) according to corresponding RATs.
[0132] The wireless device 802 may include one or more antenna (s) 812 (e.g., one, two, four, eight, or more) . For embodiments with multiple antenna (s) 812, the wireless device 802 may leverage the spatial diversity of such multiple antenna (s) 812 to send and / or receive multiple different data streams on the same time and frequency resources. This behavior may be referred to as, for example, MIMO behavior (referring to the multiple antennas used at each of a transmitting device and a receiving device that enable this aspect) . MIMO transmissions by the wireless device 802 may be accomplished according to precoding (or digital beamforming) that is applied at the wireless device 802 that multiplexes the data streams across the antenna (s) 812 according to known or assumed channel characteristics such that each data stream is received with an appropriate signal strength relative to other streams and at a desired location in the spatial domain (e.g., the location of a receiver associated with that data stream) . Some embodiments may use single user MIMO (SU-MIMO) methods (where the data streams are all directed to a single receiver) and / or multi-user MIMO (MU-MIMO) methods (where individual data streams may be directed to individual (different) receivers in different locations in the spatial domain) .
[0133] In some embodiments having multiple antennas, the wireless device 802 may implement analog beamforming techniques, whereby phases of the signals sent by the antenna (s) 812 are relatively adjusted such that the (joint) transmission of the antenna (s) 812 can be directed (this is sometimes referred to as beam steering) .
[0134] The wireless device 802 may include one or more interface (s) 814. The interface (s) 814 may be used to provide input to or output from the wireless device 802. For example, a wireless device 802 that is a UE may include interface (s) 814 such as microphones, speakers, a touchscreen, buttons, and the like in order to allow for input and / or output to the UE by a user of the UE. Other interfaces of such a UE may be made up of transmitters, receivers, and other circuitry (e.g., other than the transceiver (s) 810 / antenna (s) 812 already described) that allow for communication between the UE and other devices and may operate according to known protocols (e.g., and the like) .
[0135] The wireless device 802 may include CLI measurement manager 816. The CLI measurement manager 816 may be implemented via hardware, software, or combinations thereof. For example, the CLI measurement manager 816 may be implemented as a processor, circuit, and / or instructions 808 stored in the memory 806 and executed by the processor (s) 804. In some examples, the CLI measurement manager 816 may be integrated within the processor (s) 804 and / or the transceiver (s) 810. For example, the CLI measurement manager 816 may be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the processor (s) 804 or the transceiver (s) 810.
[0136] The CLI measurement manager 816 may be used for various aspects of the present disclosure, for example, aspects of FIGs. 1-8, from a wireless device or UE perspective. The CLI measurement manager 816 may be configured to, for example, perform receiving an indication of a configuration of a SBFD serving cell, the configuration identifying one or more subcarriers for downlink resources of the SBFD serving cell that are frequency domain multiplexed with one or more subcarriers for uplink resources of the SBFD serving cell; receiving or obtaining a CLI measurement configuration indicating a set of resources for CLI measurements for the SBFD serving cell; processing, according to the CLI measurement configuration, the CLI measurements obtained using at least a portion of the downlink resources; and transmitting a report based at least in part on the performed CLI measurements.
[0137] The network device 820 may include one or more processor (s) 822. The processor (s) 822 may execute instructions such that various operations of the network device 820 are performed, as described herein. The processor (s) 822 may include one or more baseband processors implemented using, for example, a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
[0138] The network device 820 may include a memory 824. The memory 824 may be a non-transitory computer-readable storage medium that stores instructions 826 (which may include, for example, the instructions being executed by the processor (s) 822) . The instructions 826 may also be referred to as program code or a computer program. The memory 824 may also store data used by, and results computed by, the processor (s) 822.
[0139] The network device 820 may include one or more transceiver (s) 828 (also collectively referred to as a transceiver 828) that may include RF transmitter and / or receiver circuitry that use the antenna (s) 830 of the network device 820 to facilitate signaling (e.g., the signaling 838) to and / or from the network device 820 with other devices (e.g., the wireless device 802) according to corresponding RATs.
[0140] The network device 820 may include one or more antenna (s) 830 (e.g., one, two, four, or more) . In embodiments having multiple antenna (s) 830, the network device 820 may perform MIMO, digital beamforming, analog beamforming, beam steering, etc., as has been described.
[0141] The network device 820 may include one or more interface (s) 832. The interface (s) 832 may be used to provide input to or output from the network device 820. For example, a network device 820 of a RAN (e.g., a base station, a radio head, etc. ) may include interface (s) 832 made up of transmitters, receivers, and other circuitry (e.g., other than the transceiver (s) 828 / antenna (s) 830 already described) that enables the network device 820 to communicate with other equipment in a network, and / or that enables the network device 820 to communicate with external networks, computers, databases, and the like for purposes of operations, administration, and maintenance of the network device 820 or other equipment operably connected thereto.
[0142] The network device 820 may include at least one CLI measurement manager 834. The CLI measurement manager 834 may be implemented via hardware, software, or combinations thereof. For example, the CLI measurement manager 834 may be implemented as a processor, circuit, and / or instructions 826 stored in the memory 824 and executed by the processor (s) 822. In some examples, the CLI measurement manager 834 may be integrated within the processor (s) 822 and / or the transceiver (s) 828. For example, the CLI measurement manager 834 may be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the processor (s) 822 or the transceiver (s) 828.
[0143] The CLI measurement manager 834 may be used for various aspects of the present disclosure, for example, aspects of FIGs. 1-8, from a network device perspective. The CLI measurement manager 834 may be configured to, for example, perform transmitting an indication of a configuration of a SBFD serving cell, the configuration identifying one or more subcarriers for downlink resources of the SBFD serving cell that are frequency domain multiplexed with one or more subcarriers for uplink resources of the SBFD serving cell; transmitting, to a UE, a CLI measurement configuration indicating a set of resources for CLI measurements for the SBFD serving cell; and receiving, from the UE, a report based at least in part on the CLI measurements performed by the UE according to the CLI measurement configuration using at least a portion of the downlink resources.
[0144] For one or more embodiments, at least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and / or methods as set forth herein. For example, a baseband processor (or processor) as described herein in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth herein. For another example, circuitry associated with a UE, network device, network element, etc. as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth herein.
[0145] Any of the above described embodiments may be combined with any other embodiment (or combination of embodiments) , unless explicitly stated otherwise. The foregoing description of one or more implementations provides illustration and description but is not intended to be exhaustive or to limit the scope of embodiments to the precise form described. Modifications and variations are possible in light of the above teachings or may be acquired from practice of various embodiments.
[0146] Embodiments and implementations of the systems and methods described herein may include various operations, which may be embodied in machine-executable instructions to be executed by a computer system. A computer system may include one or more general-purpose or special-purpose computers (or other electronic devices) . The computer system may include hardware components that include specific logic for performing the operations or may include a combination of hardware, software, and / or firmware.
[0147] The systems described herein pertain to specific embodiments but are provided as examples. These embodiments can be combined into single systems, partially combined into other systems, split into multiple systems or divided or combined in other ways. In addition, it is contemplated that parameters, attributes, aspects, etc. of one embodiment can be used in another embodiment. The parameters, attributes, aspects, etc. are merely described in one or more embodiments for clarity, and it is recognized that the parameters, attributes, aspects, etc. can be combined with or substituted for parameters, attributes, aspects, etc. of another embodiment unless specifically disclaimed herein.
[0148] Although the foregoing has been described in some detail for purposes of clarity, it will be apparent that changes and modifications may be made without departing from the principles thereof. It should be noted that there are many alternative ways of implementing both the processes and apparatuses described herein. Accordingly, the present embodiments are to be considered illustrative and not restrictive, and the description is not to be limited to the details given herein but may be modified within the scope and equivalents of the appended claims.
Claims
1.A baseband processor comprising memory and configured to:receive an indication of a configuration of a subband full duplex (SBFD) serving cell, the configuration identifying one or more subcarriers for downlink resources of the SBFD serving cell that are frequency domain multiplexed with one or more subcarriers for uplink resources of the SBFD serving cell;receive a cross-link interference (CLI) measurement configuration indicating a set of resources for CLI measurements for the SBFD serving cell;process, according to the CLI measurement configuration, the CLI measurements obtained using at least a portion of the downlink resources; andtransmit a report based at least in part on the performed CLI measurements.2.The baseband processor of claim 1, wherein the baseband processor configured to receive the CLI measurement configuration comprises the baseband processor configured to:receive a channel state information (CSI) report configuration indicating the CLI measurement configuration.3.The baseband processor of claim 2, wherein the CLI measurement configuration is associated with a CSI report configuration identifier of a CSI resource configuration, the CSI resource configuration identifying a list of CLI reference signal resources.4.The baseband processor of claim 1, wherein the CLI measurement configuration comprises a list of CLI reference signal resources, each CLI reference signal resource in the list of CLI reference signal resources being associated with a same serving cell index and a same bandwidth part identifier as each other CLI reference signal resource in the list of CLI reference signal resources.5.The baseband processor of claim 1, wherein the CLI measurement configuration comprises a list of CLI reference signal resources, and sounding reference signal (SRS) resources identified by the list of CLI reference signal resources are within the uplink resources of the SBFD serving cell.6.The baseband processor of claim 1, wherein the CLI measurement configuration comprises a list of CLI reference signal resources, and received signal strength indicator resources identified by the list of CLI reference signal resources are:within a downlink bandwidth part that spans at least a portion of both the one or more subcarriers for the downlink resources and the one or more subcarriers for the uplink resources;within a portion of the one or more subcarriers for the downlink resources; orwithin a portion of the one or more subcarriers for the uplink resources, and sounding reference signal resources are identified by the list of CLI reference signal resources.7.The baseband processor of claim 1, further configured to:determine, for a CSI resource configuration identifier associated with the CLI measurement configuration, a resource type of a plurality of resource types for resources in a list of CLI reference signal resources, wherein the CLI measurements are processed according to the resource type, and the resource type comprises one of aperiodic resources, semi-persistent resources, or periodic resources.8.The baseband processor of claim 7, wherein the list of CLI reference signal resources includes received signal strength indicator (RSSI) resources for the CLI measurements, and a RSSI resource configuration for CLI indicates a slot offset for the aperiodic resources or a periodicity and offset for the semi-persistent resources.9.The baseband processor of claim 1, further configured to:receive a media access control (MAC) control element that indicates to activate the set of resources for the CLI measurements, the MAC control element identifying the SBFD serving cell, and an identifier indicating semi-persistent resources of a list of CLI reference signal resources.10.The baseband processor of claim 1, further configured, wherein semi-persistent resources are to be used for the CLI measurements, to:receive a media access control (MAC) control element that indicates to activate the set of resources for the CLI measurements;transmit, in a slot, an acknowledgment of the received MAC control element; anddetermine candidate slots for the CLI measurements based at least in part on a quantity of SBFD slots following the slot in which the acknowledgment was transmitted.11.The baseband processor of claim 1, further configured, wherein periodic resources are to be used for the CLI measurements, to:receive a downlink control information (DCI) message scheduling the at least a portion of the downlink resources for the CLI measurements;determine a candidate slot for the CLI measurements based at least in part on a slot offset value, wherein the CLI measurements are obtained from measurements in an SBFD slot subsequent to the candidate slot based at least in part on the candidate slot being a non-SBFD slot.12.The baseband processor of claim 1, further configured to:identify layer 1 or layer 2 resources to use to transmit the report according to a CLI reporting field configuration, the report transmitted using the layer 1 or layer 2 resources.13.The baseband processor of claim 12, further configured to:transmit capability signaling identifying a UE capability to be configured with one or more of received signal strength indicator (RSSI) resources or sounding reference signal (SRS) resources for the CLI measurements.14.The baseband processor of claim 1, further configured to:transmit capability signaling identifying one or both of a maximum number of values that a UE can report for received signal strength indicator (RSSI) CLI measurements or a maximum number of values that the UE can report for sounding reference signal (SRS) CLI measurements.15.The baseband processor of claim 1, further configured to:transmit capability signaling identifying a UE capability to transmit a single report based at least in part on both the processed CLI measurements and channel state information (CSI) measurements.16.The baseband processor of claim 15, further configured to:obtain CSI measurements; anddetermine a relative priority between reporting the processed CLI measurements and the obtained CSI measurements, where the report is transmitted according to the relative priority.17.A method of wireless communication at a user equipment (UE) , comprising:receiving an indication of a configuration of a subband full duplex (SBFD) serving cell, the configuration identifying one or more subcarriers for downlink resources of the SBFD serving cell that are frequency domain multiplexed with one or more subcarriers for uplink resources of the SBFD serving cell;receiving a cross-link interference (CLI) measurement configuration indicating a set of resources for CLI measurements for the SBFD serving cell;process, according to the CLI measurement configuration, the CLI measurements using at least a portion of the downlink resources; andtransmitting a report based at least in part on the processed CLI measurements.18.The method of claim 17, further comprising:receiving a channel state information (CSI) report configuration indicating the CLI measurement configuration.19.The method of claim 17, further comprising:transmitting capability signaling identifying one or more of:a UE capability to be configured with one or more of received signal strength indicator (RSSI) resources or sounding reference signal (SRS) resources for the CLI measurements;a maximum number of values that the UE can report for RSSI CLI measurements;a maximum number of values that the UE can report for SRS CLI measurements; ora UE capability to transmit a single report based at least in part on both the processed CLI measurements and channel state information (CSI) measurements.20.A method of wireless communication at a network device, comprising:transmitting an indication of a configuration of a subband full duplex (SBFD) serving cell, the configuration identifying one or more subcarriers for downlink resources of the SBFD serving cell that are frequency domain multiplexed with one or more subcarriers for uplink resources of the SBFD serving cell;transmitting, to a user equipment (UE) , a cross-link interference (CLI) measurement configuration indicating a set of resources for CLI measurements for the SBFD serving cell; andreceiving, from the UE, a report based at least in part on the CLI measurements performed by the UE according to the CLI measurement configuration using at least a portion of the downlink resources.
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