User equipment, processors and base stations

Abstract

A user equipment (UE) is configured to report information for configuring multiple transmit and receive point (TRP) operations to a base station. The UE receives a multiple TRP configuration from the base station, wherein the multiple TRP configuration configures a primary TRP (P-TRP) and a secondary TRP (S-TRP) for the UE; receives a measurement configuration from the base station, wherein the measurement configuration configures the UE to perform measurements associated with the P-TRP and the S-TRP; performs measurements associated with the P-TRP and the S-TRP based on the measurement configuration; and transmits a measurement report including the measurement to the base station.

Description

Technical Field

[0001] The present application relates generally to wireless communications and, more particularly, to transmit and receive point configurations. Background Art

[0002] In 5G New Radio (NR) wireless communications, 5G NR networks can use multiple transmit and receive points (TRPs) to improve the reliability of wireless channels. For example, multiple PDSCHs (e.g., two PDSCHs) can be scheduled via multiple TRPs for user equipment (UE) to receive, so as to improve the throughput of the UE. Summary of the invention

[0003] Some exemplary embodiments relate to a user equipment (UE) having: a transceiver configured to communicate with a base station; and a processor communicatively coupled to the transceiver and configured to perform operations. The operations include: receiving a multiple transmission and reception point (TRP) configuration from the base station, wherein the multiple TRP configuration configures a primary TRP (P-TRP) and a secondary TRP (S-TRP) for the UE; receiving a measurement configuration from the base station, wherein the measurement configuration configures the UE to perform measurements associated with the P-TRP and the S-TRP; performing measurements associated with the P-TRP and the S-TRP based on the measurement configuration; and transmitting a measurement report including the measurement to the base station.

[0004] Other exemplary embodiments relate to a processor configured to perform operations. The operations include: receiving a multiple transmit and receive point (TRP) configuration from the base station, wherein the multiple TRP configuration configures a primary TRP (P-TRP) and a secondary TRP (S-TRP) for a UE; receiving a measurement configuration from the base station, wherein the measurement configuration configures the UE to perform measurements associated with the P-TRP and the S-TRP; performing measurements associated with the P-TRP and the S-TRP based on the measurement configuration; and transmitting a measurement report including the measurement to the base station.

[0005] Another exemplary embodiment relates to a base station having: a transceiver configured to communicate with a user equipment (UE); and a processor communicatively coupled to the transceiver and configured to perform operations. The operations include: transmitting a multiple transmit and receive point (TRP) configuration to the UE, wherein the multiple TRP configuration configures a primary TRP (P-TRP) and a secondary TRP (S-TRP) for the UE; transmitting a measurement configuration to the UE, wherein the measurement configuration configures the UE to perform measurements associated with the P-TRP and the S-TRP; and receiving a measurement report from the UE, the measurement report including results from the measurements associated with the P-TRP and the S-TRP. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 Exemplary network arrangements are shown according to various exemplary embodiments.

[0007] Figure 2 An exemplary UE according to various exemplary embodiments is shown.

[0008] Figure 3 An exemplary base station configured to establish a connection with a user equipment is shown according to various exemplary embodiments.

[0009] Figure 4 Methods of TRP configuration according to various exemplary embodiments are shown.

[0010] Figure 5 An exemplary diagram illustrating CSI reporting according to various exemplary embodiments is shown. DETAILED DESCRIPTION

[0011] The exemplary embodiments may be further understood with reference to the following description and the associated drawings, wherein similar elements have the same reference numerals. The exemplary embodiments describe devices, systems, and methods for a user equipment (UE) to provide multiple transmit and receive point (TRP) information to a next generation NodeB (gNB) of a 5G new radio (NR) wireless network for optimization of the UE's TRP configuration.

[0012] The exemplary embodiments are described with reference to a network including a 5G New Radio NR radio access technology (RAT). However, the exemplary embodiments may be implemented in other types of networks using the principles described herein.

[0013] The exemplary embodiments are also described with reference to a UE. However, the use of a UE is for illustrative purposes only. The exemplary embodiments can be utilized with any electronic component that can establish a connection with a network and is configured with hardware, software, and / or firmware for exchanging information and data with the network. Therefore, the UE described herein is used to represent any electronic component.

[0014] Current configurations of TRPs for UEs do not take into account UE feedback.Exemplary embodiments take into account UE feedback and measurements for TRP operations for TRP selection, grouping, and release operations, while also balancing the associated overhead for such UE feedback.

[0015] According to some exemplary embodiments, the UE may perform configured measurements associated with a primary TRP (P-TRP) and a secondary TRP (S-TRP), and report the measurements to the gNB for TRP selection, grouping, and / or reconfiguration by the gNB.

[0016] Figure 1An exemplary network arrangement 100 according to various exemplary embodiments is shown. The exemplary network arrangement 100 includes a UE 110. It should be noted that any number of UEs may be used in the network arrangement 100. Those skilled in the art will appreciate that the UE 110 may alternatively be any type of electronic component configured to communicate via a network, such as a mobile phone, a tablet computer, a desktop computer, a smart phone, a tablet phone, an embedded device, a wearable device, an Internet of Things (IoT) device, etc. It should also be understood that an actual network arrangement may include any number of UEs used by any number of users. Therefore, for illustrative purposes, only an example with a single UE 110 is provided.

[0017] UE 110 may be configured to communicate with one or more networks. In the example of network configuration 100, the networks with which UE 110 may wirelessly communicate are 5G New Radio (NR) radio access network (5GNR-RAN) 120, LTE radio access network (LTE-RAN) 122, and wireless local area network (WLAN) 124. However, it should be understood that UE 110 may also communicate with other types of networks, and UE 110 may also communicate with the network through a wired connection. Therefore, UE 110 may include a 5G NR chipset that communicates with 5G NR-RAN 120, an LTE chipset that communicates with LTE-RAN 122, and an ISM chipset that communicates with WLAN 124.

[0018] 5G NR-RAN 120 and LTE-RAN 122 may be part of cellular networks that may be deployed by cellular providers (e.g., Verizon, AT&T, Sprint, T-Mobile, etc.). These networks 120, 122 may include, for example, cells or base stations (NodeB, eNodeB, HeNB, eNBS, gNB, gNodeB, macrocell base stations, microcell base stations, small cell base stations, femtocell base stations, etc.) configured to send and receive traffic from UEs equipped with appropriate cellular chipsets. WLAN 124 may include any type of wireless local area network (WiFi, hotspot, IEEE 802.11x network, etc.).

[0019] UE 110 may be connected to 5G NR-RAN 120 via gNB 120A and / or gNB 120B. During operation, UE 110 may be within range of multiple gNBs. Thus, simultaneously or alternatively, UE 110 may be connected to 5G NR-RAN 120 via gNBs 120A and 120B. In addition, UE 110 may communicate with eNB 122A of LTE-RAN 122 to transmit and receive control information for downlink and / or uplink synchronization with respect to 5G NR-RAN 120 connection.

[0020] Those skilled in the art will appreciate that any relevant process may be performed for the UE 110 to connect to the 5G NR-RAN 120. For example, as described above, the 5G NR-RAN 120 may be associated with a particular cellular provider, where the UE 110 and / or its user has a protocol and credential information (e.g., stored on a SIM card). Upon detecting the presence of the 5G NR-RAN 120, the UE 110 may transmit corresponding credential information in order to associate with the 5G NR-RAN 120. More specifically, the UE 110 may be associated with a particular base station (e.g., gNB 120A of the 5G NR-RAN 120).

[0021] In addition to networks 120, 122, and 124, network arrangement 100 also includes a cellular core network 130, the Internet 140, an IP multimedia subsystem (IMS) 150, and a network service backbone 160. Cellular core network 130 (e.g., 5GC of NR) can be considered as an interconnected collection of components that manage the operation and traffic of a cellular network. Cellular core network 130 also manages traffic flowing between the cellular network and the Internet 140.

[0022] The IMS 150 may be generally described as an architecture for delivering multimedia services to the UE 110 using the IP protocol. The IMS 150 may communicate with the cellular core network 130 and the Internet 140 to provide multimedia services to the UE 110. The network service backbone 160 communicates directly or indirectly with the Internet 140 and the cellular core network 130. The network service backbone 160 may be generally described as a set of components (e.g., servers, network storage arrangements, etc.) that implement a set of services that may be used to extend the functionality of the UE 110 to communicate with various networks.

[0023] Figure 2 An exemplary UE 110 is shown according to various exemplary embodiments. Figure 1 100 is used to describe the UE 110. The UE 110 may represent any electronic device and may include a processor 205, a memory arrangement 210, a display device 215, an input / output (I / O) device 220, a transceiver 225, and other components 230. The other components 230 may include, for example, an audio input device, an audio output device, a battery providing a limited power source, a data acquisition device, a port for electrically connecting the UE 110 to other electronic devices, one or more antenna panels, etc. For example, the UE 110 may be coupled to industrial equipment via one or more ports.

[0024] Processor 205 may be configured to execute multiple engines of UE 110. For example, the engines may include TRP management engine 235. TRP management engine 235 may perform various operations related to performing measurements on TRP signals and reporting those measurements to gNB 120A. An example of this process will be described in more detail below.

[0025] The above-described engine as an application (e.g., program) executed by the processor 205 is merely exemplary. The functions associated with the engine may also be represented as an independent combined component of the UE 110, or may be a modular component coupled to the UE 110, for example, an integrated circuit with or without firmware. For example, an integrated circuit may include an input circuit system for receiving a signal and a processing circuit system for processing signals and other information. The engine may also be embodied as an application or multiple separate applications. In addition, in some UEs, the functionality described for the processor 205 is shared between two or more processors such as a baseband processor and an application processor. The exemplary embodiments may be implemented in any of these or other configurations of the UE.

[0026] The memory arrangement 210 may be a hardware component configured to store data related to operations performed by the UE 110. The display device 215 may be a hardware component configured to display data to a user, and the I / O device 220 may be a hardware component that enables user input. The display device 215 and the I / O device 220 may be separate components or may be integrated together (such as a touch screen). The transceiver 225 may be a hardware component configured to establish a connection with the 5G NR-RAN 120, LTE-RAN 122, WLAN 124, etc. Thus, the transceiver 225 may operate on multiple different frequencies or channels (e.g., a continuous set of frequencies).

[0027] Figure 3 An exemplary network cell, in this case gNB 120A, is shown according to various exemplary embodiments. gNB 120A may represent any access node of a 5G NR network that UE 110 may use to establish a connection. Figure 3 The gNB 120A shown may also represent gNB 120B.

[0028] The gNB 120A may include a processor 305, a memory arrangement 310, an input / output (I / O) device 320, a transceiver 325, and other components 330. The other components 330 may include, for example, a power supply, a data acquisition device, a port for electrically connecting the gNB 120A to other electronic devices, and the like.

[0029] Processor 305 may be configured to execute multiple engines of gNB 120A. For example, the engines may include a TRP management engine 335 for performing operations including configuring a TRP group for UE 110, receiving measurements associated with TRP signals from UE 110, and optimizing the TRP configuration based on those measurements. An example of this process is described in more detail below.

[0030] The engine described above as an application (e.g., program) executed by the processor 305 is merely exemplary. The functionality associated with the engine may also be represented as a stand-alone integrated component of the gNB 120A, or may be a modular component coupled to the gNB 120A, such as an integrated circuit with or without firmware. For example, an integrated circuit may include input circuitry for receiving signals and processing circuitry for processing signals and other information. In addition, in some gNBs, the functionality described for the processor 305 is split between multiple processors (e.g., a baseband processor, an application processor, etc.). The exemplary aspects may be implemented in any of these or other configurations of the gNB.

[0031] The memory arrangement 310 may be a hardware component configured to store data related to operations performed by the UE 110, 112. The I / O device 320 may be a hardware component or port that enables a user to interact with the gNB 120A. The transceiver 325 may be a hardware component configured to exchange data with the UE 110 and any other UE in the system 100. The transceiver 325 may operate on a variety of different frequencies or channels (e.g., a set of continuous frequencies). Thus, the transceiver 325 may include one or more components (e.g., radio components) to enable data exchange with various networks and UEs.

[0032] Figure 4 4 shows a method 400 for TRP configuration according to various exemplary embodiments. It should be noted that although the following description assumes the configuration of two TRPs (P-TRP and S-TRP), more TRPs may be configured for UE 110. At 405, UE 110 receives a TRP configuration from gNB 120A. In some embodiments, the TRP configuration includes a P-TRP and an S-TRP. At 410, UE 110 receives a time difference (TD) measurement configuration from gNB 120A. Based on the TD measurement configuration, UE 110 determines a radio frame TD (e.g., in TRP) between the P-TRP and the S-TRP. c In some embodiments, the TD measurement configuration is received as part of a radio resource control (RRC) reconfiguration, where the report type is set to "reportTD".

[0033] At 415, UE 110 performs TD measurements for P-TRP and S-TRP radio frames. At 420, UE 110 reports the measured TD to gNB 120A. In some embodiments, the TD report may be set to be periodic, as configured by gNB 120A. In some embodiments, the TD report may alternatively or additionally be triggered by an event. For example, in some embodiments, the triggering event is a TD change greater than a predetermined threshold ΔT for all activated TRPs. In such an embodiment, UE 110 may report the TD and request gNB 120A to reconfigure the TRP pair (or group) for UE 110. In some embodiments, the triggering event may alternatively or additionally be the addition of an S-TRP. Once gNB 120A adds the S-TRP, UE 110 measures the TD and reports it back to gNB 120A for verification purposes. In some embodiments, the TD reported at 420 (periodic or event triggered) may guarantee the reconfiguration of the paired TRPs. Thus, in some embodiments, at 425, UE 110 receives a TRP reconfiguration from gNB 120A for reconfiguration of the TRP pair.

[0034] In some embodiments, in order to limit the frequency of TD reporting by UE 110, a prohibitTDR-Timer may be defined and configured by the gNB on a per-UE basis using higher layer signaling (e.g., RRC). When the prohibitTDR-Timer expires or has expired, UE 110 may report TD. Therefore, too frequent TD reporting by UE 110 does not put pressure on system resources.

[0035] The TDs of the TRPs transmitting the channel site information resource signal (CSI-RS) resources and synchronization signal block (SSB) blocks of the serving cell of the UE should be closely aligned to ensure that the UE 110 can use the same receive chain for simultaneously receiving physical downlink shared channel (PDSCH) transmissions from the P-TRP and S-TRP. In some embodiments, the UE 110 processes the two PDSCH transmissions jointly using a single fast Fourier transform (FFT) of the sample set, and then demaps them separately for post-processing. In some embodiments, the maximum TD in multiple TRPs may be defined based at least on the subcarrier spacing (SCS) used for the P-TRP and S-TRP. In some embodiments, the maximum TD of the P-TRP and S-TRP is less than or equal to the length of the cyclic prefix.

[0036] In some embodiments, UE 110 may process PDSCH transmissions from the P-TRP and the S-TRP jointly (e.g., based on a single time tracking loop) or separately (e.g., based on separate time tracking loops). In some embodiments, UE 110 may process PDSCH transmissions from the P-TRP and the S-TRP jointly or separately based at least in part on a multi-TRP configuration received from gNB 120A or an indication received from one of the TRPs via, for example, a DCI format (e.g., a flag). However, if TD exceeds a predetermined threshold, UE 110 may stop monitoring the S-TRP or transmitting to the S-TRP.

[0037] In some embodiments, the multi-TRP measurement set may be parameterized per CSI-RS resource associated with different TRPs, rather than utilizing a physical cell ID or a TRP that is purely a physical entity. In such embodiments, the multi-TRP measurement set may be configured by the gNB 120A via RRC in a UE-specific manner, making the measurement set independent of the cell ID. Based on the measurement report, the gNB 120A learns which TRP the UE 110 is attempting to pair with. In some embodiments, the cell ID may be configured as part of the multi-TRP measurement set (part of the configuration) if, for example, CSI-RS or SSB from a non-serving cell is used as the measurement source.

[0038] In some embodiments, to facilitate measurement-based TRP selection, UE 110 may be configured by gNB 120A with a virtual cell ID for SRS sequence generation on a per-SRS resource set basis. That is, UL SRS resources are associated with different virtual cell IDs. For example, in some embodiments, UE 110 may be configured with at least two virtual cell IDs to associate different SRS resource sets with corresponding different TRPs for SRS transmission. Based on the measurement report, gNB 120A learns which TRP UE 110 is attempting to pair with.

[0039] In some embodiments, more than one timing advance group (TAG) may be configured for UEs targeting serving cells or component carriers (CCs) with different TRPs. Each TRP is associated with a TAG. If different TRPs schedule different UL transmissions, conflicts between transmissions are possible due to different timing advance (TA) values. In some embodiments, UE 110 may be configured with a priority list for UL channels depending on the channel type and content so that UE 110 can handle such conflicts. Thus, when a conflict occurs, UE 110 may discard the lower priority channel or rate match the lower priority channel. In some embodiments, priorities may be defined from highest priority to lowest priority as follows: 1.) Physical Random Access Channel (PRACH) transmission of P-TRP, 2.) Physical Uplink Control Channel (PUCCH) / Physical Uplink Shared Channel (PUSCH) transmission with Acknowledgement (ACK) / Negative Acknowledgement (NACK) and / or Scheduling Request (SR) transmission, 3.) PUCCH / PUSCH with other uplink control information (UCI), 4.) PUCCH / PUSCH without UCI, and 5.) Sounding Reference Signal (SRS) / PRACH transmission of S-TRP.

[0040] With respect to CSI reporting, in some implementations, CSI measurements and reporting by UE 110 are limited to the CSI-RS resources of a single TRP with a unique physical cell Id (PCI). Figure 5 As shown in , in some embodiments, UE 110 may report a preferred TRP using a preferred TRP indicator 502 in the report and a CSI measurement 504 associated with the preferred TRP. Due to this type of CSI reporting, gNB 120A may select a TRP for DL ​​transmissions of UE 110.

[0041] In some embodiments, UE 110 may be configured with multiple CSI-RS resources corresponding to multiple TRPs (possibly with different PCIs). In such a scenario, a CSI triggering state in the scheduling downlink control information (DCI) format may trigger UE 110 to perform CSI reporting across multiple TRPs with different PCIs. In addition, in such a scenario, UE 110 may cascade CSI reports before encoding. In some embodiments, the cascading may be performed first in increasing order of CSI reports and then in increasing order of TRPs. In some embodiments, a single bit field may be added to DCI format 1_1 to dynamically switch between single TRP CSI feedback or multi-TRP CSI feedback based on the current position of UE 110.

[0042] Those skilled in the art will appreciate that the exemplary embodiments described above may be implemented with any suitable software configuration or hardware configuration or combination thereof. Exemplary hardware platforms for implementing the exemplary embodiments may include, for example, Intel x86-based platforms with compatible operating systems, Windows OS, Mac platforms and MAC OS, mobile devices with operating systems such as iOS, Android, etc. In other examples, the exemplary embodiments of the above methods may be embodied as a program including lines of code stored on a non-transitory computer-readable storage medium, which, when compiled, may be executed on a processor or microprocessor.

[0043] Although this patent application describes various combinations of various aspects, each with different features, those skilled in the art will understand that any feature of one aspect may be combined with features of other aspects or features that are not functionally or logically inconsistent with the operation or function of the device of the aspects disclosed in the present invention in any manner not publicly denied.

[0044] It is understood that the use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of the authorized use should be clearly stated to users.

[0045] It will be apparent to those skilled in the art that various modifications may be made to the present disclosure without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to cover modifications and variations of the present disclosure, provided that these modifications and variations are within the scope of the appended claims and their equivalents.

Claims

1. A user equipment (UE), comprising: a transceiver configured to communicate with a base station; and a processor communicatively coupled to the transceiver and configured to perform operations including: receiving a multiple transmit and receive point (TRP) configuration from the base station, wherein the multiple TRP configuration configures a primary TRP (P-TRP) and a secondary TRP (S-TRP) for the UE; receiving a measurement configuration from the base station, wherein the measurement configuration configures the UE to perform measurements associated with the P-TRP and the S-TRP; performing measurements associated with the P-TRP and the S-TRP based on the measurement configuration; as well as A measurement report including the measurement is transmitted to the base station.

2. The UE according to claim 1, wherein the measurement configuration comprises a time difference (TD) measurement configuration, wherein the measurement comprises a measurement of a TD between received radio frames of the P-TRP and the S-TRP, and wherein the measurement report comprises a TD measurement report. The UE according to claim 2 , wherein the TD measurement report is periodically transmitted to the base station. The UE according to claim 2 , wherein the TD measurement report is sent to the base station when a predetermined criterion is met. The UE according to claim 4 , wherein the predetermined criterion includes a change in the TD being greater than a predetermined value. The UE according to claim 4 , wherein the predetermined criterion includes adding the S-TRP. 7 . The UE according to claim 2 , wherein the TD measurement report is transmitted to the base station when a timer expires.

8. The UE according to claim 2, wherein the operations further comprise: Process a first physical downlink shared channel (PDSCH) from the P-TRP and a second PDSCH from the S-TRP. 9 . The UE of claim 8 , wherein the first PDSCH and the second PDSCH are jointly processed or separately processed.

10. The UE according to claim 2, wherein when the TD is greater than a predetermined value, the UE stops monitoring the S-TRP and transmitting to the S-TRP.

11. The UE of claim 1 , wherein the measurement configuration comprises a parameterized channel state information reference signal (CSI-RS) resource, and wherein the measurement report comprises a CSI measurement report, the CSI measurement report comprises a CSI measurement based on the CSI-RS resource, and wherein the configuration of the P-TRP and the S-TRP is based on the CSI measurement report.

12. The UE of claim 1, wherein the operations further comprise: A virtual cell identifier (cell ID) configuration is received from the base station for each of a plurality of sounding reference signal (SRS) resource sets, wherein each of the plurality of SRS resource sets is associated with an SRS transmission to a corresponding one of the P-TRP and the S-TRP.

13. The UE of claim 1 , wherein when a collision between two or more uplink transmissions from the UE to different TRPs has occurred, the operations further comprise: One of the lower priority channels in a predetermined prioritized channel hierarchy is dropped or rate matched.

14. The UE of claim 1, wherein the measurement configuration comprises a CSI measurement configuration, and wherein the measurement report comprises a CSI measurement report.

15. The UE of claim 14, wherein the CSI measurement configuration comprises CSI-RS resources corresponding to one TRP, and wherein the CSI report comprises a preferred TRP indicator and a CSI measurement of the TRP selected by the UE as the preferred TRP.

16. The UE of claim 14, wherein the CSI measurement configuration comprises CSI-RS resources corresponding to a plurality of TRPs, and wherein scheduling of downlink control information (DCI) triggers CSI reporting for the plurality of TRPs in the measurement report.

17. The UE of claim 16, wherein the operations further comprise: The measurement reports are concatenated before encoding.

18. A processor, the processor being configured to perform operations, the operations comprising: Receiving a multiple transmit and receive point (TRP) configuration from a base station, wherein the multiple TRP configuration configures a primary TRP (P-TRP) and a secondary TRP (S-TRP) for the UE; receiving a measurement configuration from the base station, wherein the measurement configuration configures the UE to perform measurements associated with the P-TRP and the S-TRP; performing measurements associated with the P-TRP and the S-TRP based on the measurement configuration; as well as A measurement report including the measurement is transmitted to the base station.

19. The processor of claim 18, wherein the measurement configuration is a time difference (TD) measurement configuration, wherein the measurement is a measurement of a TD between received radio frames of the P-TRP and the S-TRP, and wherein the measurement report is a TD measurement report.

20. The processor of claim 19, wherein the TD measurement report is transmitted to the base station upon expiration of a timer.

21. The processor of claim 19, wherein when the TD is greater than a predetermined value, the UE stops monitoring the S-TRP and transmitting to the S-TRP.

22. The processor of claim 18, wherein the measurement configuration comprises a parameterized channel state information reference signal (CSI-RS) resource, and wherein the measurement report is a CSI measurement report, the CSI measurement report comprising a CSI measurement based on the CSI-RS resource, and wherein the configuration of the P-TRP and the S-TRP is based on the CSI measurement report.

23. The processor of claim 18, wherein when a collision between two or more uplink transmissions from the UE to different TRPs has occurred, the operations further comprise: One of the lower priority channels in a predetermined prioritized channel hierarchy is dropped or rate matched.

24. The processor of claim 18, wherein the measurement configuration is a CSI measurement configuration, wherein the measurement report is a CSI measurement report.

25. The processor of claim 24, wherein the CSI measurement configuration comprises CSI-RS resources corresponding to one TRP, and wherein the CSI report comprises a best TRP indicator and a CSI measurement of the TRP selected by the UE as the best TRP.

26. A processor according to claim 25, wherein the CSI measurement configuration includes CSI-RS resources corresponding to multiple TRPs, and wherein scheduling downlink control information (DCI) triggers CSI reporting for the multiple TRPs in the measurement report.

27. A base station, comprising: a transceiver configured to communicate with a user equipment (UE); and a processor communicatively coupled to the transceiver and configured to perform operations including: transmitting a multiple transmit and receive point (TRP) configuration to the UE, wherein the multiple TRP configuration configures a primary TRP (P-TRP) and a secondary TRP (S-TRP) for the UE; transmitting a measurement configuration to the UE, wherein the measurement configuration configures the UE to perform measurements associated with the P-TRP and the S-TRP; A measurement report is received from the UE, the measurement report comprising results from the measurements associated with the P-TRP and the S-TRP.

28. The base station of claim 27, wherein the measurement configuration is a time difference (TD) measurement configuration, wherein the measurement is a measurement of the TD between received radio frames of the P-TRP and the S-TRP, and wherein the measurement report is a TD measurement report.

29. The base station of claim 27, wherein the measurement configuration comprises a parameterized channel state information reference signal (CSI-RS) resource, and wherein the measurement report is a CSI measurement report, the CSI measurement report comprises a CSI measurement based on the CSI-RS resource, and wherein the configuration of the P-TRP and the S-TRP is based on the CSI measurement report.

30. The base station of claim 27, wherein the measurement configuration is a CSI measurement configuration, and wherein the measurement report is a CSI measurement report.

31. A base station according to claim 30, wherein the CSI measurement configuration includes CSI-RS resources corresponding to one TRP, and wherein the CSI report includes a best TRP indicator and a CSI measurement of the TRP selected by the UE as the best TRP.

32. A base station according to claim 30, wherein the CSI measurement configuration includes CSI-RS resources corresponding to multiple TRPs, and wherein scheduling downlink control information (DCI) triggers CSI reporting for the multiple TRPs in the measurement report.

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