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CN-115669121-B - Physical layer cross link interference measurement and reporting

CN115669121BCN 115669121 BCN115669121 BCN 115669121BCN-115669121-B

Abstract

Aspects of the present disclosure relate to wireless communications, and more particularly to techniques for physical layer Cross Link Interference (CLI) measurement and reporting.

Inventors

  • MA RUIFENG
  • HAO CHENXI
  • XU HUILIN

Assignees

  • 高通股份有限公司

Dates

Publication Date
20260508
Application Date
20200506

Claims (20)

  1. 1. A method of wireless communication by a user equipment, UE, comprising: Receiving a resource configuration indicating time-frequency cross-link interference, CLI, measurement resources for physical layer measurements of CLI caused by uplink transmissions by one or more other UEs during downlink timeslots of the UE; Receiving a reporting configuration indicating a time resource of a reporting opportunity for physical layer reporting of the CLI; measuring at least one CLI metric based on measurements made in measurement occasions according to the resource configuration, and According to the reporting configuration, the at least one CLI-metric is reported in a reporting opportunity, wherein the reporting opportunity occurs a first minimum timing interval after a most recent measurement resource available for measuring the reported CLI-metric, wherein the first minimum timing interval depends at least in part on a type of the reported CLI-metric.
  2. 2. The method of claim 1, wherein the resource configuration further indicates parameters for generating a reference signal sequence and for mapping the sequence to configured time-frequency resources.
  3. 3. The method of claim 1, wherein: the resource configuration indicates that the type of CLI measurement resource is periodic, semi-persistent or aperiodic, and The reporting configuration indicates that the type of CLI measurement report is periodic, semi-persistent, or aperiodic.
  4. 4. The method of claim 1, further comprising: Reporting occasions for reporting the measured CLI-metrics are determined based on the association of the resource configuration with the reporting configuration.
  5. 5. The method of claim 4, wherein the association is indicated via: a resource configuration ID of a configuration resource provided in the reporting configuration, or A reporting configuration ID of a reporting configuration provided in the resource configuration.
  6. 6. The method of claim 4, wherein: If the CLI-measurement resource is of a periodic type, the allowable types of the associated CLI report include periodic type, semi-persistent type, or aperiodic type; If the CLI measurement resource is of a semi-persistent type, the allowable types of the associated CLI report include semi-persistent type or non-periodic type, and If the CLI-measurement resource is aperiodic, the allowable type of the associated CLI report includes an aperiodic type.
  7. 7. The method of claim 1, wherein the first minimum timing interval for a received signal strength indicator, RSSI, CLI, type is less than the first minimum timing interval for a reference signal received power, RSRP, CLI, type.
  8. 8. The method of claim 1, wherein if both the CLI-measurement resource type and the CLI-measurement report type are aperiodic, the reporting opportunity occurs a second minimum timing interval after a physical downlink control channel, PDCCH, triggering the CLI-measurement resource.
  9. 9. The method of claim 8, wherein the second minimum timing interval depends at least in part on a type of CLI metric reported.
  10. 10. The method of claim 9, wherein the second minimum timing interval for a received signal strength indicator RSSICLI type is less than the second minimum timing interval for a reference signal received power, RSRP, CLI type.
  11. 11. The method of claim 1, wherein: when the CLI-measurement resource type is not aperiodic, configuring an indication of whether a time-domain measurement restriction is configured for CLI measurement; Allowing the UE to use only the most recent transmission occasion of the measurement resource prior to the first minimum timing interval when the restriction is configured, and When no restrictions are configured, the UE is allowed to use more than just the most recent transmission occasion of measurement resources prior to the first minimum timing interval.
  12. 12. A method of wireless communication by a network entity, comprising: Signaling to a user equipment, UE, a resource configuration indicating time-frequency cross-link interference, CLI, measurement resources for physical layer measurements of CLI caused by uplink transmissions by one or more other UEs during downlink timeslots of the UE; Signaling a reporting configuration of time resources indicating reporting occasions for physical layer reporting of CLI to the UE, and Receiving a report of at least one CLI-metric from the UE, the at least one CLI-metric based on measurements made in measurement occasions according to the resource configuration, wherein a report is received in a reporting occasion according to the reporting configuration, wherein the reporting occasion occurs a first minimum timing interval after a most recent measurement resource available for measuring the reported CLI-metric, wherein the first minimum timing interval depends at least in part on a type of the reported CLI-metric.
  13. 13. The method of claim 12, wherein the resource configuration further indicates parameters for generating a reference signal sequence and for mapping the sequence to configured time-frequency resources.
  14. 14. The method of claim 12, wherein: the resource configuration indicates that the type of CLI measurement resource is periodic, semi-persistent or aperiodic, and The reporting configuration indicates that the type of CLI measurement report is periodic, semi-persistent, or aperiodic.
  15. 15. The method of claim 12, further comprising: reporting opportunities for receiving the measured CLI metrics are determined based on the association of the resource configuration with the reporting configuration.
  16. 16. The method of claim 15, wherein the association is indicated via: a resource configuration ID of a configuration resource provided in the reporting configuration, or A reporting configuration ID of a reporting configuration provided in the resource configuration.
  17. 17. The method of claim 15, wherein: If the CLI-measurement resource is of a periodic type, the allowable types of the associated CLI report include periodic type, semi-persistent type, or aperiodic type; If the CLI measurement resource is of a semi-persistent type, the allowable types of the associated CLI report include semi-persistent type or non-periodic type, and If the CLI-measurement resource is aperiodic, the allowable type of the associated CLI report includes an aperiodic type.
  18. 18. The method of claim 12, wherein the first minimum timing interval for a received signal strength indicator RSSICLI type is less than the first minimum timing interval for a reference signal received power, RSRP, CLI type.
  19. 19. The method of claim 12, wherein if both the CLI-measurement resource type and the CLI-measurement report type are aperiodic, the reporting opportunity occurs a second minimum timing interval after a physical downlink control channel, PDCCH, triggering the CLI-measurement resource.
  20. 20. The method of claim 19, wherein the second minimum timing interval depends at least in part on a type of CLI metric reported.

Description

Physical layer cross link interference measurement and reporting Technical Field Aspects of the present disclosure relate to wireless communications, and more particularly to techniques for physical layer measurement and reporting of cross-link interference. Background Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcast, and so on. These wireless communication systems may employ multiple-access techniques 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 (3 GPP) Long Term Evolution (LTE) systems, LTE-advanced (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 (SCFDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems, to name a few. In some examples, a wireless multiple-access communication system may include multiple Base Stations (BSs), each capable of supporting communication for multiple communication devices (also referred to as User Equipment (UEs)) simultaneously. In an LTE or LTE-a network, a set of one or more base stations may define an eNodeB (eNB). In other examples (e.g., in next generation, new air interface (NR), or 5G networks), a wireless multiple access communication system may include a plurality of Distributed Units (DUs) (e.g., edge units (DUs), edge Nodes (ENs), radio Heads (RH), smart Radio Heads (SRHs), transmitting Reception Points (TRPs), etc.) in communication with a plurality of Central Units (CUs) (e.g., central Nodes (CNs), access Node Controllers (ANCs), etc.), wherein a set of one or more distributed units in communication with a central unit may define an access node (e.g., which may be referred to as a base station, 5G NB, next generation NodeB (gNB or gNodeB), TRP, etc.). A base station or distributed unit may communicate with a set of UEs on downlink channels (e.g., for transmissions from or to the base station) and uplink channels (e.g., for transmissions from or to the UE). These multiple access techniques have been employed in various telecommunications standards to provide a common protocol that enables different wireless devices to communicate at the urban, national, regional, and even global levels. A new air interface (NR) (e.g., 5G) is an example of an emerging telecommunication standard. NR is a set of enhancements to the LTE mobile standard promulgated by 3 GPP. It is designed to better support mobile broadband internet access by improving spectral efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards using OFDMA with Cyclic Prefix (CP) on Downlink (DL) and Uplink (UL). To this end, NR supports beamforming, multiple Input Multiple Output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to increase, further improvements in NR and LTE technologies are needed. Preferably, these improvements should be applicable to other multiple access techniques and telecommunication standards employing these techniques. Disclosure of Invention 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. Without limiting the scope of the disclosure as set forth in the appended claims, some features will now be briefly discussed. After considering this discussion, and particularly after reading the section entitled "detailed description of certain embodiments" one will understand how the features of this disclosure provide advantages that include improved communications between access points and stations in a wireless network. Certain aspects of the present disclosure provide a method of wireless communication by a User Equipment (UE). The method generally includes receiving a resource configuration indicating time-frequency cross-link interference (CLI) measurement resources for physical layer measurements of CLI caused by one or more other UEs making uplink transmissions during a downlink time slot of the UE, receiving a reporting configuration indicating time resources of a CLI reporting occasion, measuring at least one CLI metric based on measurements made in the reporting occasion according to the resource configuration, and reporting the at least one CLI metric in the reporting occasion according to the reporting configuration. Certain aspects of the present disclosure provide a method of wireless communication by a network entity. The method generally includes signaling a resource configuration to a User Equipment (UE) indicatin