Dynamic port selection for time and phase synchronization of coherent joint transmission

Abstract

Various aspects of this disclosure relate to wireless communication in general. In some aspects, user equipment (UE) can use... M The UE can transmit one or more SRS signals from each probe reference signal (SRS) port. N Each Channel State Information Reference Signal (CSI-RS) resource set receives multiple CSI-RSs, and each corresponding CSI-RS resource set includes M A corresponding CSI-RS resource. The reception may be based at least in part on at least one of the following: a first operating condition specifying the use of the same set of antenna ports to receive at least a first CSI-RS and a second CSI-RS; or a second operating condition specifying the use of resources included in the link to... N CSI-RS resource set M Each corresponding CSI-RS resource M Each antenna port in the SRS ports receives data from each corresponding CSI-RS resource set. M A corresponding CSI-RS resource. Numerous other aspects are described.

Description

Technical Field

[0001] All aspects of this disclosure relate to wireless communication in general, and more particularly to techniques, apparatus and methods for dynamic port selection for time and phase synchronization of coherent joint transmission. Background Technology

[0002] Wireless communication systems are widely deployed to provide a variety of services, including voice, text, messaging, video, data, and / or other services. Services may include unicast, multicast, and / or broadcast services, etc. Typical wireless communication systems employ multiple access radio access technologies (RATs) capable of supporting communication with multiple users by sharing available system resources (e.g., time-domain resources, frequency-domain resources, spatial-domain resources, and / or device transmit power, etc.). Examples of such multiple access RATs include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0003] The aforementioned Multiple Access RATs have been adopted in various telecommunications standards to provide a common protocol enabling different wireless communication devices to communicate at the city, national, regional, or global level. An example telecommunications standard is New Radio (NR). NR (also known as 5G) is part of the continuous evolution of mobile broadband announced by the 3rd Generation Partnership Project (3GPP). NR (and other mobile broadband evolutions beyond NR) can be designed to better support the Internet of Things (IoT) and reduced-capacity device deployments, industrial connectivity, millimeter-wave (mmWave) expansion, licensed and unlicensed spectrum access, non-terrestrial network (NTN) deployments, sidelinks and other device-to-device direct communication technologies (e.g., cellular vehicle-to-everything (CV2X) communications), massive MIMO, decomposed network architectures and network topology expansion, multi-subscriber implementations, high-precision positioning and / or radio frequency (RF) sensing, and more. As the demand for mobile broadband access continues to grow, further improvements to NR can be implemented, and other radio access technologies (such as 6G) can be introduced to further advance mobile broadband evolution. Summary of the Invention

[0004] Some aspects described herein relate to a method for wireless communication performed by a user equipment (UE). This method may include: using a configuration from multiple antenna ports... M Each probe reference signal (SRS) port is used to send one or more SRS signals. M The first integer. This method may include... N Each Channel State Information Reference Signal (CSI-RS) resource set receives multiple CSI-RS.N The second integer, N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, the reception being based at least in part on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from the plurality of antenna ports for use. N The first CSI-RS resource in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among the plurality of CSI-RSs and use it N The second CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive the second CSI-RS among the plurality of CSI-RSs; or a second operating condition specifies the use of the resource included in the method for transmitting the one or more SRSs. M Each antenna port in the SRS ports is used to receive the N Each of the corresponding CSI-RS resource sets in the CSI-RS resource sets M Each corresponding CSI-RS resource is included in this M Each antenna port in the SRS ports is linked to the N CSI-RS resource set M Each corresponding CSI-RS resource.

[0005] Some aspects described herein relate to a method of wireless communication performed by a first transmit-receive point (TRP). The method may include: receiving an SRS from a UE. The method may include: transmitting a CSI-RS at least partially based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least partially based on the SRS. The method may include: receiving an indication of a time offset and a phase offset between the first TRP and a second TRP.

[0006] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to use multiple antenna ports configured to... M One SRS port is used to send one or more SRS messages. M The first integer. The one or more processors can be configured to... N Each CSI-RS resource set receives multiple CSI-RS. N The second integer, NEach corresponding CSI-RS resource set in a CSI-RS resource set includes M Each corresponding CSI-RS resource. The one or more processors may be configured to receive the plurality of CSI-RS resources based at least in part on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from the plurality of antenna ports for use. N The first CSI-RS resource in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among the plurality of CSI-RSs and use it N The second CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive the second CSI-RS among the plurality of CSI-RSs; or a second operating condition specifies the use of the resource included in the method for transmitting the one or more SRSs. M Each antenna port in the SRS ports is used to receive the N Each of the corresponding CSI-RS resource sets in the CSI-RS resource sets M Each corresponding CSI-RS resource is included in this M Each antenna port in the SRS ports is linked to the N CSI-RS resource set M Each corresponding CSI-RS resource.

[0007] Some aspects described herein relate to an apparatus for wireless communication at a first TRP. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to receive SRS from a UE. The one or more processors may be configured to transmit CSI-RS at least partially based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least partially based on the SRS. The one or more processors may be configured to receive indications of time offset and phase offset between the first TRP and a second TRP.

[0008] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. When executed by one or more processors of the UE, this set of instructions enables the UE to: use configurations from multiple antenna ports... M One SRS port is used to send one or more SRS messages. M The first integer. This instruction set, when executed by one or more processors of the UE, enables the UE to: from NEach CSI-RS resource set receives multiple CSI-RS. N The second integer, N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M Each corresponding CSI-RS resource. When executed by one or more processors of the UE, this instruction set enables the UE to receive the plurality of CSI-RS at least in part based on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from the plurality of antenna ports for use. N The first CSI-RS resource in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among the plurality of CSI-RSs and use it N The second CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive the second CSI-RS among the plurality of CSI-RSs; or a second operating condition specifies the use of the resource included in the method for transmitting the one or more SRSs. M Each antenna port in the SRS ports is used to receive the N Each of the corresponding CSI-RS resource sets in the CSI-RS resource sets M Each corresponding CSI-RS resource is included in this M Each antenna port in the SRS ports is linked to the N CSI-RS resource set M Each corresponding CSI-RS resource.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication via one or more instructions, which, when executed by one or more processors of a first TRP, cause the first TRP to receive SRS from a UE. The set of instructions, when executed by one or more processors of the first TRP, causes the first TRP to: transmit CSI-RS at least partially based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least partially based on the SRS. The set of instructions, when executed by one or more processors of the first TRP, causes the first TRP to: receive indications of time and phase offsets between the first TRP and a second TRP.

[0010] Some aspects described herein relate to an apparatus for wireless communication. This apparatus may include: a configuration for using multiple antenna ports. M Each SRS port is used to send one or more SRS components.M The first integer is [value]. The device may include: [functions for] [receiving] [data from] [a specific source]. N A CSI-RS resource set receives components from multiple CSI-RS. N The second integer, N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, the reception being based at least in part on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from the plurality of antenna ports for use. N The first CSI-RS resource in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among the plurality of CSI-RSs and use it N The second CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive the second CSI-RS among the plurality of CSI-RSs; or a second operating condition specifies the use of the resource included in the method for transmitting the one or more SRSs. M Each antenna port in the SRS ports is used to receive the N Each of the corresponding CSI-RS resource sets in the CSI-RS resource sets M Each corresponding CSI-RS resource is included in this M Each antenna port in the SRS ports is linked to the N CSI-RS resource set M Each corresponding CSI-RS resource.

[0011] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: components for receiving SRS from a UE. The apparatus may include: components for transmitting CSI-RS at least partially based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least partially based on the SRS. The apparatus may include: components for receiving indications of time offset and phase offset between a first TRP and a second TRP.

[0012] Various aspects of this disclosure may be implemented or be implemented as described in whole by or embodied in the methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network nodes, network entities, wireless communication devices and / or processing systems as fully described in the specification and drawings and illustrated in the specification and drawings.

[0013] The preceding paragraphs of this section have broadly summarized some aspects of this disclosure. These and additional aspects and their associated advantages will be described below. The disclosed aspects can serve as the basis for modifying or designing other aspects for performing the same or similar purposes of this disclosure. Such equivalent aspects do not depart from the scope of the appended claims. The characteristics of the aspects disclosed herein, their organization and operation, and their associated advantages will be better understood from the following description taken in conjunction with the accompanying drawings. Attached Figure Description

[0014] The accompanying drawings illustrate some aspects of this disclosure but do not limit its scope, as other aspects can be achieved through this description. Each drawing in the drawings is provided for illustrative and descriptive purposes and not as a definition of limitation of the claims. Identical or similar reference numerals in different drawings may identify identical or similar elements.

[0015] Figure 1 This is a diagram illustrating an example of a wireless communication network according to the present disclosure.

[0016] Figure 2 This is a diagram illustrating communication between an example network node and an example user equipment (UE) in a wireless network according to the present disclosure.

[0017] Figure 3 This is a diagram illustrating an example decomposed base station architecture according to this disclosure.

[0018] Figure 4 An example logical architecture of a distributed radio access network according to this disclosure is illustrated.

[0019] Figure 5 This is a diagram illustrating an example of multiple transmit-receive-point (TRP) communication according to this disclosure.

[0020] Figure 6 This is a diagram illustrating an example of a wireless communication process between a UE, a first TRP, and a second TRP according to this disclosure.

[0021] Figure 7 This is a diagram illustrating an example of a wireless communication process between a UE, a first TRP, and a second TRP according to this disclosure.

[0022] Figure 8 This is a diagram illustrating an example of a link between a Channel State Information Reference Signal (CSI-RS) resource set and a Sounding Reference Signal (SRS) resource set according to this disclosure.

[0023] Figure 9A , Figure 9B , Figure 9C and Figure 9DThese are illustrations of the first, second, third, and fourth examples of permitted and prohibited operating conditions according to this disclosure.

[0024] Figure 10A and Figure 10B These are diagrams illustrating a first example and a second example of a link between a CSI-RS resource and an SRS port, respectively, in accordance with the instructions of this disclosure.

[0025] Figure 11 This is a diagram illustrating an example of a wireless communication process between a UE, a first network node, and a second network node according to this disclosure.

[0026] Figure 12 This is a diagram illustrating an example process performed, for example, at the UE or a device of the UE, according to this disclosure.

[0027] Figure 13 This is a diagram illustrating an example process performed, for example, at a first TRP or at a device of the first TRP, according to the present disclosure.

[0028] Figure 14 This is a diagram of an example device for wireless communication according to the present disclosure.

[0029] Figure 15 This is a diagram of an example device for wireless communication according to the present disclosure. Detailed Implementation

[0030] Various aspects of this disclosure are described below with reference to the accompanying drawings. However, aspects of this disclosure may be embodied in many different forms and should not be construed as limited to any specific aspect illustrated or described with reference to the drawings or otherwise presented in this disclosure. Rather, these aspects are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of protection of this disclosure to those skilled in the art. Those skilled in the art will understand that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, various combinations or numbers of aspects set forth herein may be used to implement an apparatus or a practice. Furthermore, the scope of this disclosure is intended to cover apparatuses having structures and / or functionalities other than those available for practicing the various aspects of this disclosure set forth herein, or methods practiced using these other structures and / or functionalities. Any aspect of this disclosure disclosed herein may be embodied by one or more elements of the claims.

[0031] Various methods, operations, apparatuses, and techniques will now be presented with reference to them. These methods, operations, apparatuses, and techniques will be described in detail below and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms (collectively, “elements”). These elements may be implemented using hardware, software, or a combination of hardware and software. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0032] In coherent joint transmission (CJT), multiple transmit-receive points (TRPs) can transmit and / or receive data from a user equipment (UE) in a synchronous and / or coherent manner. As an example, a first TRP and a second TRP can perform phase registration and / or time registration on their respective transmissions to arrive at the UE in phase with each other, thereby mitigating constructive interference and thus improving the received signal quality at the UE (e.g., a higher power level). Specifically, the first and second TRPs can generate a joint transmission that combines a first signal from the first TRP and a second signal from the second TRP to produce a combined signal with a higher received signal power level at the UE relative to the individual received power of the first and / or second signals. In some aspects, the TRPs can use information about the corresponding channel between each TRP and the UE to select transmission weights or other transmission parameters (e.g., timing offset and / or phase offset) to improve constructive interference and thus enhance the received signal quality.

[0033] The UE may be configured with multiple Sounding Reference Signal (SRS) ports for transmitting multiple SRSs to multiple Transmitting Points (TRPs) operating in a CJT manner. Each TRP may be assigned a corresponding set of resources, such as a corresponding Channel State Information Reference Signal (CSI-RS) resource, which the TRP uses to transmit the corresponding CSI-RS to the UE. For example, a first TRP may use a first set of CSI-RS resources included in a first CSI-RS resource set, and a second TRP may use a second set of CSI-RS resources included in a second CSI-RS set. Each TRP may apply pre-decoding to a corresponding portion of the CSI-RS carried by the corresponding CSI-RS resource to mitigate distortion in the corresponding portion of the CSI-RS that is at least partially based on channel propagation and / or channel phase. The pre-decoding may be at least partially based on the corresponding SRS transmitted by the UE using the corresponding SRS port. For example, each TRP may use the corresponding SRS to derive a channel estimate, and the pre-decoding may be at least partially based on that channel estimate. Therefore, the channel estimate may be at least partially based on one or more characteristics of the corresponding SRS port used to transmit the SRS.

[0034] For some operational scenarios, the UE may use the same antenna port included in the SRS port used to transmit the SRS associated with pre-decoding to receive the pre-decoding CSI-RS portion (e.g., the pre-decoding CSI-RS resource described below). However, the UE may also use a different antenna port than the SRS port associated with pre-decoding to receive the pre-decoding CSI-RS portion. The pre-decoding CSI-RS portion received by the UE using an antenna port different from the SRS port used for pre-decoding may be referred to as a cross-link signal, as described below. In some operational scenarios, the UE may be unable to cancel the cross-link signal, resulting in inaccurate inter-TRP phase offset estimation and / or inter-TRP timing offset estimation. The amount of inaccuracy causes asynchrony in transmissions from the first TRP and the second TRP (e.g., CJT performed by the TRP). Asynchronous transmissions between TRPs can lead to reduced signal quality at the UE (e.g., signal power levels that meet low power thresholds), increased data recovery errors, reduced data throughput, and / or increased data transmission latency.

[0035] The various aspects collectively involve dynamic port selection for time and phase synchronization in CJT. Some aspects are more specifically related to the UE using operating conditions (e.g., operating conditions specified by the communication standard) to transmit and / or receive reference signals in multiple TRP scenarios. In some aspects, the UE can use multiple antenna ports configured... M One SRS port is used to send one or more SRS ( M (The first integer). UE can use N A set of CSI-RS resources to receive multiple CSI-RS ( N (The second integer). In some respects, N Each corresponding CSI-RS resource set in a CSI-RS resource set may include M Each UE may receive multiple CSI-RS resources, at least in part, based on one or more operating conditions. As an example, a first operating condition may specify that the UE uses at least the same set of antenna ports (e.g., from multiple antenna ports) to use a first set of CSI-RS resources (e.g., from...). N indivual CSI-RS In the resource set M A corresponding CSI-RS resource is used to receive (e.g., one of multiple CSI-RSs) at least the first CSI-RS and use (e.g., N (From the first CSI-RS resource set) The second CSI-RS resource set M A corresponding CSI-RS resource is used to receive (e.g., one of multiple CSI-RSs) the second CSI-RS. As another example, the second operating condition may specify that the UE uses a resource included in the transmission of one or more SRSs. MEach antenna port in the SRS ports is used to receive (e.g., N (In each corresponding CSI-RS resource set) M Each corresponding CSI-RS resource. In some respects, it is included. M Each antenna port in the SRS ports can be linked to N The corresponding CSI-RS resource in each of the CSI-RS resource sets.

[0036] Specific aspects of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential advantages. In some examples, by using one or more operating conditions specifying allowed and / or disallowed antenna ports for receiving pre-decoded CSI-RS, the described techniques can be used to enable a UE (e.g., UE 120) to eliminate cross-link signals and / or Tx-Rx mismatches in calculations for estimating inter-TRP phase offset and / or inter-TRP timing offset, and to improve the accuracy of inter-TRP phase offset estimation and / or inter-TRP timing estimation, as described below. That is, these operating conditions ensure that the UE receives pre-decoded CSI-RS resources belonging to different CSI-RS resource sets but associated with the same SRS port, thereby enabling the UE to eliminate cross-link signals. Improving the accuracy of phase offset estimation and / or timing offset estimation between TRPs can improve synchronization in the CJT between TRPs (e.g., reducing timing offset and / or reducing phase offset), thereby resulting in improved signal quality at the UE (e.g., signal power level that meets high power threshold), reduced data recovery errors, increased data throughput, and / or reduced data transmission latency.

[0037] Multiple access radio access technology (RAT) has been adopted in various telecommunications standards to provide a common protocol that enables different wireless communication devices to communicate at the city, national, regional, or global level. For example, 5G New Radio (NR) is part of the continuous mobile broadband evolution program released by the 3rd Generation Partnership Project (3GPP). 5G NR supports a variety of technologies and use cases, including enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), massive machine-type communication (mMTC), millimeter wave (mmWave) technology, beamforming, network slicing, edge computing, Internet of Things (IoT) connectivity and management, and network function virtualization (NFV).

[0038] With increasing demand for broadband access and the evolution of technologies supported by wireless communication networks, further technological improvements can be adopted or implemented in 5G NR or future RATs (such as 6G) to further advance the evolution of wireless communication for a variety of existing and new use cases and applications. Such technological improvements can be associated with new frequency band extensions, licensed and unlicensed spectrum access, overlapping spectrum use, small cell deployments, non-terrestrial network (NTN) deployments, decomposed network architectures and network topology extensions, device aggregation, advanced duplex communication, sidelinks and other device-to-device direct communication, IoT (including passive or ambient IoT) networks, reduced-capacity (RedCap) UE functionality, industrial connectivity, multi-subscriber implementations, high-precision positioning, radio frequency (RF) sensing and / or artificial intelligence or machine learning (AI / ML), and more. Such technological improvements can support use cases such as wireless backhaul, wireless data centers, extended reality (XR) and metaverse applications, meta-services for supporting vehicle connectivity, holographic and mixed reality communications, autonomous and collaborative robots, vehicle platooning and collaborative manipulation, sensor networks, posture monitoring, brain-computer interfaces, digital twin applications, asset management, and general coverage applications using off-ground and / or aerial platforms, etc. The methods, operations, apparatuses, and techniques described herein can implement one or more of the foregoing technologies and / or support one or more of the foregoing use cases.

[0039] Figure 1 This is a diagram illustrating an example of a wireless communication network 100 according to the present disclosure. The wireless communication network 100 may be a 5G (or NR) network or a 6G network, or may include elements of a 5G (or NR) network or a 6G network, etc. The wireless communication network 100 may include a plurality of network nodes 110, shown as network node (NN) 110a, network node 110b, network node 110c, and network node 110d. Network nodes 110 may support communication with a plurality of UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e).

[0040] Network nodes 110 and UEs 120 of wireless communication network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, frequency bands, carriers, and / or channels according to frequency or wavelength. For example, devices of wireless communication network 100 can communicate using one or more operating frequency bands. In some aspects, multiple wireless networks 100 can be deployed in a given geographical area. Each wireless communication network 100 can support a specific RAT (which may also be referred to as an air interface) and can operate on one or more carrier frequencies in one or more frequency ranges. Examples of RATs include 4G RATs, 5G / NRRATs, and / or 6G RATs, etc. In some examples, when multiple RATs are deployed in a given geographical area, each RAT in that geographical area can operate on a different frequency to avoid interference with each other.

[0041] Various operating frequency bands have been defined as frequency ranges designated FR1 (410 MHz to 7.125 GHz), FR2 (24.25 GHz to 52.6 GHz), FR3 (7.125 GHz to 24.25 GHz), FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Although a portion of FR1 is greater than 6 GHz, in some documents and articles, FR1 is often (interchangeably) referred to as the “sub-6 GHz” band. Similarly, in some documents and articles, FR2 is often (interchangeably) referred to as the “millimeter wave” band, but this is different from the Very High Frequency (EHF) band (30 GHz to 300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU). The frequencies between FR1 and FR2 are often referred to as the mid-band frequencies, including FR3. Frequency bands falling within FR3 can inherit FR1 or FR2 characteristics, thereby effectively extending the characteristics of FR1 or FR2 into mid-band frequencies. Therefore, "below 6 GHz" (if used herein) can broadly refer to frequencies less than 6 GHz, within FR1, and / or included in mid-band frequencies. Similarly, the term "millimeter wave" (if used herein) can broadly refer to frequencies included in mid-band frequencies, within FR2, FR4, FR4-a, FR4-1, or FR5, and / or within the EHF band. Higher frequency bands can extend 5G NR operation, 6G operation, and / or other RATs above 52.6 GHz. For example, each of FR4a, FR4-1, FR4, and FR5 falls within the EHF band. In some examples, the wireless communication network 100 can implement dynamic spectrum sharing (DSS), where multiple RATs (e.g., 4G / LTE and 5G / NR) are implemented within a single frequency band using dynamic bandwidth allocation (e.g., based on user demand). It is conceivable that the frequencies included in these operating frequency bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1 and / or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0042] Network node 110 may include one or more devices, components, or systems that enable communication between UE 120 and one or more devices, components, or systems of wireless communication network 100. Network node 110 may be, may include, or may be referred to as an NR network node, 5G network node, 6G network node, node B, eNB, gNB, access point (AP), TRP, mobility element, core, network entity, network element, network equipment, and / or another type of device, component, or system included in the radio access network (RAN).

[0043] Network node 110 may be implemented as a single physical node (e.g., a single physical structure) or as two or more physical nodes (e.g., two or more different physical structures). For example, network node 110 may be a device or system implementing a portion of a radio protocol stack, a device or system implementing a complete protocol stack (such as a complete gNB protocol stack), or a collection of devices or systems collectively implementing a complete protocol stack. For example, and as shown, network node 110 may be an aggregated network node (with an aggregated architecture), meaning that network node 110 can implement a complete radio protocol stack physically and logically integrated within a single node (e.g., a single physical structure) in the wireless communication network 100. For example, aggregated network node 110 may consist of a single standalone base station or a single TRP that uses a complete radio protocol stack to implement or facilitate communication between UE 120 and the core network of wireless communication network 100.

[0044] Alternatively, and also as shown, network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), meaning that network node 110 may use protocol stacks that are physically distributed and / or logically distributed across two or more nodes in the same or different geographic locations. For example, a decomposed network node may have a decomposed architecture. In some deployments, decomposed network node 110 may be used in integrated access and backhaul (IAB) networks, in open radio access networks (O-RAN) (such as network configurations compliant with the O-RAN Alliance), or in virtualized radio access networks (vRAN) (also referred to as cloud radio access networks (C-RAN)) to facilitate scaling by decomposing base station functionality into multiple individually deployable units.

[0045] Network nodes 110 of wireless communication network 100 may include one or more central units (CUs), one or more distributed units (DUs), and / or one or more radio units (RUs). CUs may host one or more higher-layer control functions, such as Radio Resource Control (RRC) functions, Packet Data Convergence Protocol (PDCP) functions, and / or Service Data Adaptation Protocol (SDAP) functions, etc. DUs may host one or more of the Radio Link Control (RLC) layer, Media Access Control (MAC) layer, and / or one or more higher physical (PHY) layers, at least in part, according to functional splits (such as those defined by 3GPP). In some examples, DUs may also host one or more low-PHY layer functions, such as Fast Fourier Transform (FFT), Inverse FFT (iFFT), beamforming, Physical Random Access Channel (PRACH) extraction and filtering, and / or scheduling of resources for one or more UEs 120, etc. RUs may host RF processing functions or low-PHY layer functions, such as FFT, iFFT, beamforming, or PRACH extraction and filtering, etc., according to functional splits (such as lower-layer functional splits). In this type of architecture, each RU can be operated to handle over-the-air (OTA) communications with one or more UE 120s.

[0046] In some aspects, a single network node 110 may include a combination of one or more CUs, one or more DUs, and / or one or more RUs. Additionally or alternatively, network node 110 may include one or more near real-time (near RT) RAN Intelligent Controllers (RICs) and / or one or more non-real-time (non-RT) RICs. In some examples, CUs, DUs, and / or RUs may be implemented as virtual units, such as Virtual Central Units (VCUs), Virtual Distributed Units (VDUs), or Virtual Radio Units (VRUs), etc. Virtual units may be implemented as virtual network functions, such as those associated with cloud deployments.

[0047] Some network nodes 110 (e.g., base stations, RUs, or TRPs) can provide communication coverage for specific geographic areas. In 3GPP, the term "cell" can refer to the coverage area of ​​network node 110 or to network node 110 itself, depending on the context in which the term is used. Network node 110 can support one or more (e.g., three) cells. In some examples, network node 110 can provide communication coverage for macro cells, pico cells, femto cells, or another type of cell. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UE 120 with a service subscription. A pico cell can cover a relatively small geographic area and can allow unrestricted access by UE 120 with a service subscription. A femto cell can cover a relatively small geographic area (e.g., a residential area) and can allow restricted access by UE 120 associated with that femto cell (e.g., UE 120 in a Closed Subscriber Group (CSG)). The network node 110 used for a macro cell may be referred to as a macro network node. Network node 110 used for a picocell may be referred to as a pico network node. Network node 110 used for a femtocell may be referred to as a femto network node or a home network node. In some examples, the cell may not necessarily be stationary. For example, the geographical area of ​​the cell may move depending on the location of the associated mobile network node 110 (e.g., a train, satellite base station, drone, or NTN network node).

[0048] The wireless communication network 100 can be a heterogeneous network, comprising different types of network nodes 110, such as macro network nodes, piconet nodes, femtonet nodes, relay network nodes, aggregation network nodes, and / or decomposition network nodes, etc. Figure 1 In the example shown, network node 110a can be a macro network node for macro cell 130a, network node 110b can be a pico network node for pico cell 130b, and network node 110c can be a femto network node for femto cell 130c. Compared to other types of network nodes 110, the various types of network nodes 110 typically transmit at different power levels, serve different coverage areas, and / or have different effects on interference in the wireless communication network 100. For example, macro network nodes may have high transmit power levels (e.g., 5 watts to 40 watts), while pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 watts to 2 watts).

[0049] In some examples, network node 110 may be, may include, or operate as a RU, TRP, or base station communicating with one or more UEs 120 via a radio access link (which may be referred to as a "Uu" link). The radio access link may include a downlink and an uplink. A "downlink" (or "DL") refers to the communication direction from network node 110 to UE 120, and an "uplink" (or "UL") refers to the communication direction from UE 120 to network node 110. Downlink channels may include one or more control channels and one or more data channels. Downlink control channels may be used to transmit downlink control information (DCI) (e.g., scheduling information, reference signals, and / or configuration information) from network node 110 to UE 120. Downlink data channels may be used to transmit downlink data (e.g., user data associated with UE 120) from network node 110 to UE 120. Downlink control channels may include one or more physical downlink control channels (PDCCH), and downlink data channels may include one or more physical downlink shared channels (PDSCH). The uplink channel may similarly include one or more control channels and one or more data channels. The uplink control channel can be used to transmit uplink control information (UCI) from UE 120 to network node 110 (e.g., transmitting corresponding reference signals and / or feedback with one or more downlinks). The uplink data channel can be used to transmit uplink data (e.g., user data associated with UE 120) from UE 120 to network node 110. The uplink control channel may include one or more physical uplink control channels (PUCCH), and the uplink data channel may include one or more physical uplink shared channels (PUSCH). The downlink and uplink may each include a set of resources on which network node 110 and UE 120 can communicate.

[0050] Downlink and uplink resources may include time-domain resources (frames, subframes, time slots, and / or symbols), frequency-domain resources (bands, component carriers, subcarriers, resource blocks, and / or resource elements), and / or spatial-domain resources (specific transmission directions and / or beam parameters). Frequency-domain resources in some bands may be subdivided into bandwidth portions (BWPs). A BWP may be a contiguous block of frequency-domain resources allocated to one or more UEs 120 (e.g., a contiguous block of resource blocks). A UE 120 may be configured to have both an uplink BWP and a downlink BWP (where the uplink BWP and downlink BWP may be the same BWP or different BWPs). BWPs may be dynamically configured and / or reconfigured (e.g., by sending DCI configuration to one or more UEs 120 via network node 110), meaning that BWPs may be adjusted in real-time (or near real-time) based on changing network conditions in the wireless communication network 100 and / or based on the specific requirements of one or more UEs 120. This allows for more efficient use of available frequency domain resources in the wireless communication network 100, as fewer frequency domain resources can be allocated to the BWP for UE 120 (which reduces the number of frequency domain resources that UE 120 needs to monitor), thus allowing more frequency domain resources to be distributed across multiple UE 120s. Therefore, the BWP can also assist in the implementation of such UE 120s by facilitating the configuration of smaller bandwidths for communications performed by lower-capacity UE 120s.

[0051] As described above, in some aspects, the wireless communication network 100 may be an IAB network, may include an IAB network, or may be included in an IAB network. In an IAB network, at least one network node 110 is an anchor network node communicating with a core network. The anchor network node 110 may also be referred to as an IAB donor (or "IAB donor"). The anchor network node 110 may be connected to the core network via a wired backhaul link. For example, the Ng interface of the anchor network node 110 may terminate at the core network. Additionally or alternatively, the anchor network node 110 may be connected to one or more devices in the core network that provide core access and mobility management functions (AMF). An IAB network typically also includes multiple non-anchor network nodes 110, which may also be referred to as relay network nodes or simply IAB nodes (or "IAB-nodes"). Each non-anchor network node 110 can directly communicate with the anchor network node 110 via a wireless backhaul link to access the core network, or can indirectly communicate with the anchor network node 110 via one or more other non-anchor network nodes 110 and an associated wireless backhaul link forming a backhaul path to the core network. Some anchor network nodes 110 or other non-anchor network nodes 110 can also directly communicate with one or more UEs 120 via a wireless access link carrying access services. For example, network resources used for wireless communication (such as time resources, frequency resources, and / or spatial resources) can be shared between the access link and the backhaul link.

[0052] In some examples, any network node 110 relaying communication may be referred to as a relay network node, a relay station, or simply a repeater. A repeater may receive communications from an upstream station (e.g., another network node 110 or UE 120) and transmit communications to a downstream station (e.g., UE 120 or another network node 110). In this case, the wireless communication network 100 may include or be referred to as a "multi-hop network." Figure 1 In the example shown, network node 110d (e.g., a relay network node) can communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communication between network node 110a and UE 120d. Additionally or alternatively, UE 120 can be a relay station capable of relaying transmissions to or from other UE 120s, or can operate as such a relay station. UE 120 relaying communication can be referred to as a UE repeater or relay UE, etc.

[0053] UE 120 may be physically distributed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile. UE 120 may be, may include, an access terminal, another terminal, a mobile station, or a subscriber unit, or may be included in an access terminal, another terminal, a mobile station, or a subscriber unit. UE 120 may be, or may include, a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband and / or smart jewelry (such as a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device and / or a satellite radio), an XR device, a vehicle component or sensor, a smart meter or sensor, industrial manufacturing equipment, a Global Navigation Satellite System (GNSS) device (such as a Global Positioning System device or another type of positioning device), a UE function of a network node, and / or any other suitable device or function that can communicate via a wireless medium, or may be coupled to them.

[0054] UE 120 and / or network node 110 may include one or more chips, system-on-a-chip (SoC), chipsets, packages, or devices that individually or collectively constitute or include a processing system. The processing system includes processor (or “processing”) circuitry in the form of one or more processors, microprocessors, processing units (such as central processing units (CPUs), graphics processing units (GPUs), neural processing units (NPUs), and / or digital signal processors (DSPs)), processing blocks, application-specific integrated circuits (ASICs), programmable logic devices (PLDs) (such as field-programmable gate arrays (FPGAs)), or other discrete gate or transistor logic components or circuits (all of which are generally referred to herein individually as “processors” or collectively as “processors” or “processor circuitry”). One or more of these processors may be individually or collectively configured to perform the various functions or operations described herein. A group of processors that can be configured or configured to perform a set of functions may include a first processor that can be configured or configured to perform a first function in the set, and a second processor that can be configured or configured to perform a second function in the set, or may include the entire group of processors that are configured or configured to perform the set of functions.

[0055] The processing system may also include memory circuitry in the form of one or more memory devices, memory blocks, memory elements, or other discrete gate or transistor logic components or circuits, each of which may include tangible storage media such as random access memory (RAM) or read-only memory (ROM) or combinations thereof (all of which are generally referred to herein individually as "memory" or collectively as "memory" or "memory circuitry"). One or more of these memories may be coupled to one or more processors in the processor (e.g., operatively coupled, communicatively coupled, electronically coupled, or electrically coupled) and may store processor-executable code (such as software) individually or collectively, which, when executed by one or more processors in the processor, may configure one or more processors in the processor to perform the various functions or operations described herein. Additionally or alternatively, in some examples, one or more processors in the processor may be pre-configured to perform the various functions or operations described herein without being configured by software. The processing system may also include or be coupled to one or more modems (such as Wi-Fi (e.g., IEEE compliant) modems or cellular (e.g., 3GPP 4G LTE, 5G, or 6G compliant) modems). In some embodiments, one or more processors of the processing system include or implement one or more modems among the modems. The processing system may also include, or be coupled to, multiple radio components (collectively, “radio components”), multiple RF chains, or multiple transceivers, each of which may in turn be coupled to one or more antennas among multiple antennas. In some embodiments, one or more processors of the processing system include or implement one or more of the radio components, RF chains, or transceivers. UE 120 may be included or may be contained in a housing that houses components associated with UE 120, including the processing system.

[0056] Some UEs 120 may be considered Machine Type Communication (MTC) UEs, Evolved or Enhanced Machine Type Communication (eMTC) UEs, Further Enhanced eMTC (feMTC) UEs or Enhanced feMTC (efeMTC) UEs, or further evolutions thereof, all of which may be collectively referred to as "MTC UEs". MTC UEs may be, may include, or may be included in or coupled with the following: robots, unmanned aerial vehicles, remote devices, sensors, instruments, monitors, and / or location tags. Some UEs 120 may be considered IoT devices and / or may be implemented as NB-IoT (Narrowband IoT) devices. IoT UEs or NB-IoT devices may be, may include, or may be included in or coupled with the following: industrial machines, appliances, refrigerators, doorbell camera devices, home automation devices, and / or lighting fixtures, etc. Some UEs 120 may be considered customer premises equipment, which may include telecommunications equipment installed at a customer location (such as a home or office) to enable access to a service provider’s network (such as being included in or communicating with the wireless communication network 100).

[0057] Some UEs 120 can be categorized according to different categories associated with varying levels of complexity and / or capabilities. Category 1 UEs 120 facilitate large-scale IoT within the wireless communication network 100 and offer lower complexity and / or cost compared to Category 2 UEs 120. Category 2 UEs 120 may include mission-critical IoT devices capable of URLLC, enhanced mobile broadband (eMBB), and / or precise positioning within the wireless communication network 100, legacy UEs, baseline UEs, high-level UEs, advanced UEs, full-capability UEs, and / or premium UEs. Category 3 UEs 120 may possess intermediate-level complexity and / or capabilities (e.g., capabilities between Category 1 and Category 2 UEs 120). Category 3 UEs 120 may be referred to as reduced-capability UEs (“RedCap UEs”), intermediate-level UEs, NR lightweight UEs, and / or NR simplified UEs, etc. RedCap UEs bridge the gap in capabilities and complexity between NB-IoT devices and / or eMTC UEs and mission-critical IoT devices and / or premium UEs. RedCap UEs can include, for example, wearable devices, IoT devices, industrial sensors, and / or cameras associated with limited bandwidth, power capacity, and / or transmission range. RedCap UEs can support healthcare environments, building automation, power distribution, process automation, transportation and logistics, and / or smart city deployments, among others.

[0058] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly with each other using sidelink communication (e.g., without communicating through a network node 110 acting as an intermediary). As an example, UE 120a can send data, control information, or other signaling directly to UE 120e as sidelink communication. This contrasts with, for example, UE 120a first sending data to network node 110 in UL communication, and then that network node sending data to UE 120e in DL communication. In various examples, UE 120 can send and receive sidelink communication using peer-to-peer (P2P) communication protocols, device-to-device (D2D) communication protocols, vehicle-to-everything (V2X) communication protocols (which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, and / or vehicle-to-pedestrian (V2P) protocols), and / or mesh network communication protocols. In some deployments and configurations, network node 110 may schedule and / or allocate resources for sidelink communication between UEs 120 in the wireless communication network 100. In some other deployments and configurations, UE 120 (instead of network node 110) may perform or cooperate with or negotiate with one or more other UEs to perform scheduling operations, resource selection operations, and / or other operations for sidelink communication.

[0059] In various examples, in addition to half-duplex operation, some network nodes and UEs in the wireless communication network 100, including network node 110 and UE 120, can also be configured for full-duplex operation. Network node 110 or UE 120 operating in half-duplex mode can perform only one of transmission or reception during a specific time resource period (such as a specific time slot, symbol, or other time period). Half-duplex operation may involve time division duplex (TDD), where the DL transmission of network node 110 and the UL transmission of UE 120 do not occur in the same time resource (i.e., the transmissions do not overlap in time). In contrast, network node 110 or UE 120 operating in full-duplex mode can transmit and receive communications concurrently (e.g., within the same time resource). By operating in full-duplex mode, network node 110 and / or UE 120 can generally increase the capacity of the network and radio access links. In some examples, full-duplex operation may involve frequency division duplex (FDD), in which network node 110 performs DL transmission in a first frequency band or on a first component carrier, and UE 120 performs transmission in a second frequency band or on a second component carrier, the second frequency band or the second component carrier being different from the first frequency band or the first component carrier, respectively. In some examples, full-duplex operation may be enabled for UE 120 but not for network node 110. For example, UE 120 may simultaneously transmit UL to the first network node 110 and receive DL transmissions from the second network node 110 in the same time resources. In some other examples, full-duplex operation may be enabled for network node 110 but not for UE 120. For example, network node 110 may simultaneously transmit DL to the first UE 120 and receive UL transmissions from the second UE 120 in the same time resources. In some other examples, full-duplex operation may be enabled for both network node 110 and UE 120.

[0060] In some examples, UE 120 and network node 110 can perform MIMO communication. "MIMO" generally refers to the simultaneous transmission or reception of multiple signals (such as multiple layers or multiple data streams) using the same time and frequency resources. MIMO techniques typically utilize multipath propagation. MIMO can be implemented using various spatial processing or spatial multiplexing operations. In some examples, MIMO can support simultaneous transmission to multiple receivers, which is called multi-user MIMO (MU-MIMO). Some RATs can employ advanced MIMO techniques such as mTRP operations (including redundant transmission or reception on multiple TRPs), reciprocity in the time or frequency domain, single-frequency network (SFN) transmission, or noncoherent joint transmission (NC-JT).

[0061] In some respects, the UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may use multiple antenna ports configured with... M One SRS port is used to send one or more SRS messages. M The first integer; and from N Each CSI-RS resource set receives multiple CSI-RS. N The second integer, N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, the reception being based at least in part on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from a plurality of antenna ports for use. N The first CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among multiple CSI-RSs and use N The second CSI-RS resource set in the first CSI-RS resource set. M A corresponding CSI-RS resource to receive a second CSI-RS among multiple CSI-RSs; or a second operating condition specifying the use of a resource included in the method for transmitting one or more SRSs. M Each antenna port in the SRS ports is used to receive... N Each corresponding CSI-RS resource set in the CSI-RS resource set M Each corresponding CSI-RS resource is included. M Each antenna port in the SRS ports is linked to N CSI-RS resource set M A corresponding CSI-RS resource. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0062] In some aspects, the first TRP (e.g., network node 110) may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may: receive an SRS from the UE; transmit a CSI-RS at least in part based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least in part based on the SRS; and receive indications of time and phase offsets between the first TRP and the second TRP. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0063] As pointed out above, Figure 1This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 1 The examples described are different.

[0064] Figure 2 This is a diagram illustrating communication between an example network node 110 and an example UE 120 in a wireless network according to the present disclosure.

[0065] like Figure 2 As shown, network node 110 may include a data source 212, a transmit processor 214, a transmit (TX) MIMO processor 216, a set of modems 232 (shown as 232a to 232t, where t≥1), a set of antennas 234 (shown as 234a to 234v, where v≥1), a MIMO detector 236, a receive processor 238, a data sink 239, a controller / processor 240, a memory 242, a communication unit 244, a scheduler 246, and / or a communication manager 150, etc. In some configurations, one or a combination of antennas 234, modems 232, MIMO detectors 236, receive processors 238, transmit processors 214, and / or TX MIMO processors 216 may be included in the transceiver of network node 110. The transceiver may be under the control of and used by one or more processors (such as controller / processor 240), and in some respects, may perform aspects of the methods, procedures and / or operations described herein in conjunction with processor-readable code stored in memory 242. In some respects, network node 110 may include one or more interfaces, communication components and / or other components that facilitate communication with UE 120 or another network node.

[0066] The terms “processor,” “controller,” or “controller / processor” can refer to one or more controllers and / or one or more processors. For example, references to “a / the processor,” “a / the controller / processor,” etc. (in the singular) should be understood as referring to a combination of… Figure 2 The processor described refers to any one or more processors, such as a single processor or a combination of multiple different processors. The reference to "one or more processors" should be understood as a combination of references. Figure 2 Any one or more processors described herein. For example, one or more processors of network node 110 may include transmit processor 214, TX MIMO processor 216, MIMO detector 236, receive processor 238, and / or controller / processor 240. Similarly, one or more processors of UE 120 may include MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, and / or controller / processor 280.

[0067] In some aspects, a single processor can perform all operations described as being performed by one or more processors. In some aspects, a first set of one or more processors can perform a first operation described as being performed by that one or more processors, and a second set of one or more processors can perform a second operation described as being performed by that one or more processors. The first set of processors and the second set of processors can be the same set of processors or can be different sets of processors. The reference to "one or more memories" should be understood to refer to any one or more memories of the corresponding device, such as those in combination. Figure 2 The memory described. For example, an operation described as being performed by one or more memories can be performed by the same subset of the one or more memories or by different subsets of the one or more memories.

[0068] For downlink communication from network node 110 to UE 120, transmitting processor 214 may receive data (“downlink data”) intended for use by UE 120 (or a set of UEs including UE 120) from data source 212 (such as a data pipeline or data queue). In some examples, transmitting processor 214 may select one or more MCSs for UE 120 based on one or more Channel Quality Indicators (CQIs) received from UE 120. Network node 110 may process the data (e.g., including encoding the data) based on the MCS selected for UE 120 for transmission to UE 120 on the downlink, thereby generating data symbols. Transmitting processor 214 may process system information (e.g., semi-static resource partitioning information (SRPI)) and / or control information (e.g., CQI requests, grants, and / or upper-layer signaling) and provide overhead symbols and / or control symbols. The transmitting processor 214 can generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS), demodulation reference signals (DMRS), or channel state information (CSI) reference signals (CSI-RS)) and / or synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)).

[0069] The TX MIMO processor 216 can perform space processing (e.g., pre-decoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols where applicable, and can output a set of symbol streams (e.g., TA set of output symbol streams is provided to modem 232. For example, each output symbol stream may be provided to a corresponding modulator component (shown as MOD) of modem 232. Each modem 232 may use the corresponding modulator component to process (e.g., modulate) the corresponding output symbol stream (e.g., for orthogonal frequency division multiplexing (OFDM)) to obtain an output sample stream. Each modem 232 may further use the corresponding modulator component to process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream to obtain a time-domain downlink signal. Modems 232a to 232t may transmit the set of downlink signals (e.g., via a set of corresponding antennas 234) together. T (One downlink signal).

[0070] Downlink signals may include DCI communication, MAC control element (MAC-CE) communication, RRC communication, downlink reference signals, or another type of downlink communication. Downlink signals may be transmitted on the PDCCH, PDSCH, and / or on another downlink channel. Downlink signals may carry one or more transport blocks (TBs) of data. A TB may be a data unit transmitted via the air interface in the wireless communication network 100. A data stream (e.g., from data source 212) may be encoded into multiple TBs for transmission via the air interface. The number of TBs used to carry data associated with a particular data stream may be associated with a TB size shared by multiple TBs. The TB size may be based on the radio channel conditions of the air interface, the MCS used to encode the data, downlink resources allocated for transmitting data, and / or other parameters, or otherwise associated with them. Generally, a larger TB size allows for a larger amount of data to be transmitted in a single transmission, reducing signaling overhead. However, a larger TB size may be more prone to transmission and / or reception errors than a smaller TB size, but such errors can be mitigated through more robust error correction techniques.

[0071] For uplink communication from UE 120 to network node 110, the uplink signal from UE 120 may be received by antenna 234, processed by modem 232 (e.g., demodulator component of modem 232, shown as DEMOD), detected where applicable by MIMO detector 236 (e.g., receive (Rx) MIMO processor), and / or further processed by receive processor 238 to obtain decoded data and / or control information. Receive processor 238 may provide the decoded data to data sink 239 (which may be a data pipeline, data queue, and / or another type of data sink) and provide the decoded control information to processors such as controller / processor 240.

[0072] Network node 110 may use scheduler 246 to schedule one or more UEs 120 for downlink or uplink communication. In some aspects, scheduler 246 may use DCI to dynamically schedule DL transmissions to and / or UL transmissions from UE 120. In some examples, scheduler 246 may allocate repetitive time-domain and / or frequency-domain resources that UE 120 may use for transmitting and / or receiving communication with RRC configuration (e.g., semi-static configuration), for example, to perform semi-persistent scheduling (SPS) or to configure configuration grant (CG) for UE 120.

[0073] One or more of the following may be included in the RF chain of network node 110: transmit processor 214, TX MIMO processor 216, modem 232, antenna 234, MIMO detector 236, receive processor 238, and / or controller / processor 240. The RF chain may include filters, mixers, oscillators, amplifiers, analog-to-digital converters (ADCs), and / or other devices for converting analog signals (such as those used for transmission or reception via an air interface) to digital signals (such as those used for processing by one or more processors of network node 110). In some aspects, the RF chain may be a transceiver of network node 110, or may be included in such a transceiver.

[0074] In some examples, network node 110 may use communication unit 244 to communicate with the core network and / or other network nodes. Communication unit 244 may support wired and / or wireless communication protocols and / or connections, such as Ethernet, fiber optic, Common Public Radio Interface (CPRI), and / or wired or wireless backhaul, etc. Network node 110 may use communication unit 244 to send and / or receive data associated with UE 120, or to execute network control signaling, etc. Communication unit 244 may include transceivers and / or interfaces, such as network interfaces.

[0075] UE 120 may include a collection of antennas 252 (shown as antennas 252a to 252r, where r ≥ 1), a collection of modems 254 (shown as modems 254a to 254u, where u ≥ 1), a MIMO detector 256, a receive processor 258, a data sink 260, a data source 262, a transmit processor 264, a TX MIMO processor 266, a controller / processor 280, a memory 282, and / or a communication manager 140, etc. One or more components of UE 120 may be included in housing 284. In some aspects, one or a combination of antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, or TX MIMO processor 266 may be included in a transceiver included in UE 120. The transceiver may be under the control of and used by one or more processors (such as controller / processor 280), and in some respects, may perform aspects of the methods, procedures, or operations described herein in conjunction with processor-readable code stored in memory 282. In some respects, UE 120 may include another interface, another communication component, and / or another component that facilitates communication with network node 110 and / or another UE 120.

[0076] For downlink communication from network node 110 to UE 120, the set of antennas 252 can receive downlink communication or signals from network node 110, and can receive the set of downlink signals (e.g., R Each received signal is provided to a set of modems 254. For example, each received signal may be provided to a corresponding demodulator component (shown as DEMOD) of modem 254. Each modem 254 may use the corresponding demodulator component to condition (e.g., filter, amplify, down-convert, and / or digitize) the received signal to obtain an input sample. Each modem 254 may use the corresponding demodulator component to further demodulate or process the input sample (e.g., for OFDM) to obtain a received symbol. MIMO detector 256 may obtain the received symbols from the set of modems 254, may perform MIMO detection on the received symbols where applicable, and may provide the detected symbols. Receiver processor 258 may process (e.g., decode) the detected symbols, may provide the decoded data for UE 120 to data sink 260 (such as a data pipeline, data queue, and / or application executed on UE 120), and may provide the decoded control information and system information to controller / processor 280.

[0077] For uplink communication from UE 120 to network node 110, the transmitting processor 264 may receive and process data (“uplink data”) from data source 262 (such as data pipelines, data queues, and / or applications running on UE 120) and control information from controller / processor 280. The control information may include one or more parameters, feedback, one or more signal measurements, and / or other types of control information. In some aspects, the receiving processor 258 and / or controller / processor 280 may determine one or more parameters related to the transmission of uplink communication for received signals (such as those received from network node 110 or another UE). One or more parameters may include a Reference Signal Received Power (RSRP) parameter, a Received Signal Strength Indicator (RSSI) parameter, a Reference Signal Received Quality (RSRQ) parameter, a CQI parameter, or a Transmit Power Control (TPC) parameter, etc. The control information may include indications of the RSRP parameter, RSSI parameter, RSRQ parameter, CQI parameter, TPC parameter, and / or another parameter. Control information can facilitate parameter selection and / or scheduling for UE 120 by network node 110.

[0078] Transmit processor 264 can generate reference symbols for one or more reference signals, such as uplink DMRS, uplink sounding reference signal (SRS), and / or another type of reference signal. Symbols from transmit processor 264 can be pre-decoded by TX MIMO processor 266 where applicable, and further processed by a set of modems 254 (e.g., for DFT-s-OFDM or CP-OFDM). TX MIMO processor 266 can perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols where applicable, and can output a set of symbol streams (e.g., ... U A set of output symbol streams is provided to modem 254. For example, each output symbol stream may be provided to a corresponding modulator component (shown as MOD) of modem 254. Each modem 254 may use the corresponding modulator component to process (e.g., modulate) the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 254 may further use the corresponding modulator component to process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream to obtain an uplink signal.

[0079] Modems 254a to 254u can transmit uplink signal sets (e.g., via a set of corresponding antennas 252) R One uplink signal or UUplink signals may include UCI communication, MAC-CE communication, RRC communication, or another type of uplink communication. Uplink signals may be transmitted on PUSCH, PUCCH, and / or another type of uplink channel. Uplink signals may carry one or more TBs of data. Sidelink data and control transmission (i.e., transmission directly between two or more UEs 120) may typically use techniques similar to those described for uplink data and control transmission, and may use sidelink-specific channels such as the Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Control Channel (PSCCH), and / or Physical Sidelink Feedback Channel (PSFCH).

[0080] One or more antennas in the set of antennas 252 or the set of antennas 234 may include one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, etc., or may be included in one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, or with one or more transmitting or receiving components (such as...) Figure 2 An antenna module is a combination of one or more antenna elements coupled to one or more components. As used herein, "antenna" can mean one or more antennas, one or more antenna panels, one or more antenna groups, one or more collections of antenna elements, or one or more antenna arrays. "Antenna panel" can mean a group of antennas (such as antenna elements) arranged in an array or panel that can facilitate beamforming by manipulating the parameters of that group of antennas. "Antenna module" can mean a circuit that includes one or more antennas, and may also include one or more other components (such as filters, amplifiers, or processors) associated with integrating the antenna module into a wireless communication device.

[0081] In some examples, each antenna element of antenna 234 or antenna 252 may include one or more sub-elements for radiating or receiving radio frequency signals. For example, a single antenna element may include a first sub-element cross-polarized with a second sub-element, which can be used to independently transmit cross-polarized signals. Antenna elements may include patch antennas, dipole antennas, and / or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between antenna elements can allow signals with a desired wavelength transmitted individually by the antenna elements to interact or interfere (e.g., to form a desired beam) in various directions. For example, given a desired wavelength or frequency range, the spacing may provide a quarter wavelength, half a wavelength, or another fraction of the wavelength between adjacent antenna elements to allow desired constructive and destructive interference modes of signals transmitted by individual antenna elements within that desired range.

[0082] The amplitude and / or phase of signals transmitted via antenna elements and / or sub-elements can be modulated and (e.g., by manipulating phase shifts, phase offsets, and / or amplitudes) shifted relative to each other to generate one or more beams; this is known as beamforming. The term "beam" can refer to the directional transmission of a wireless signal toward a receiving device or otherwise in a desired direction. "Beam" can also generally refer to the direction associated with such directional signal transmission, the set of directional resources associated with the signal transmission (e.g., angle of arrival, horizontal direction, and / or vertical direction), and / or a set of parameters indicating one or more aspects of the directional signal, the direction associated with the signal, and / or the set of directional resources associated with the signal. In some implementations, antenna elements can be individually selected or deselected for the directional transmission of a signal (or multiple signals) by controlling the amplitude of one or more corresponding amplifiers and / or the phase of the signal to form one or more beams. The shape of the beam (such as amplitude, width, and / or the presence of sidelobes) and / or the direction of the beam (such as the angle of the beam relative to the surface of the antenna array) can be dynamically controlled by modifying the phase shifts, phase offsets, and / or amplitudes of multiple signals relative to each other.

[0083] Different UEs 120 or network nodes 110 may include different numbers of antenna elements. For example, UE 120 may include a single antenna element, two antenna elements, four antenna elements, eight antenna elements, or different numbers of antenna elements. As another example, network node 110 may include eight antenna elements, 24 antenna elements, 64 antenna elements, 128 antenna elements, or different numbers of antenna elements. Generally speaking, a larger number of antenna elements provides increased control over the parameters used for beamforming compared to a smaller number of antenna elements, while a smaller number of antenna elements may be less complex to implement and can use less power. Multiple antenna elements can support multi-layer transmission, in which the same time and frequency resources are used to utilize spatial multiplexing to transmit a first layer of communication (which may include a first data stream) and a second layer of communication (which may include a second data stream).

[0084] Although Figure 2 The boxes in the diagram are illustrated as different components, but the functions described above with respect to these boxes may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of controller / processor 280.

[0085] Figure 3 This is an illustration of an example decomposed base station architecture 300 according to the present disclosure. One or more components of the example decomposed base station architecture 300 may be, may include, or may be included in one or more network nodes (such as one or more network nodes 110). The decomposed base station architecture 300 may include a CU 310, which may communicate directly with the core network 320 via a backhaul link, or may communicate indirectly with the core network 320 via one or more decomposed control units (such as non-RT RIC 350 and / or near-RT RIC 370 associated with a Service Management and Orchestration (SMO) framework 360) (e.g., via an E2 link). The CU 310 may communicate with one or more DU 330 via a corresponding midhaul link (such as via an F1 interface). Each DU 330 may communicate with one or more RU 340 via a corresponding fronthaul link. Each RU 340 may communicate with one or more UE 120 via a corresponding RF access link. In some deployments, a UE 120 may be served simultaneously by multiple RU 340s.

[0086] Each component in the components of the decomposed base station architecture 300 (including CU 310, DU 330, RU 340, near-RT RIC 370, non-RT RIC 350, and SMO frame 360) may include one or more interfaces or may be coupled to one or more interfaces for receiving or transmitting signals, such as data or information, via wired or wireless transmission media.

[0087] In some respects, the CU 310 can be logically divided into one or more CU user plane (CU-UP) units and one or more CU control plane (CU-CP) units. When implemented in an O-RAN configuration, the CU-UP units can communicate bidirectionally with the CU-CP units via an interface such as an E1 interface. The CU 310 can be deployed to communicate with one or more DU 330s for network control and signaling, as needed. Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RU 340s. For example, the DU 330 may host various layers, such as the RLC layer, MAC layer, or one or more PHY layers (such as one or more high PHY layers or one or more low PHY layers). Each layer (which may also be referred to as a module) can be implemented using an interface for signaling to other layers (and modules) hosted by the DU 330, or for signaling to control functions hosted by the CU 310. Each RU 340 may implement lower-layer functionality. In some respects, the real-time and non-real-time aspects of communication with the control plane and user plane of the RU 340 can be controlled by the corresponding DU 330.

[0088] The SMO framework 360 supports RAN deployment and provisioning for both non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO framework 360 supports the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via operation and maintenance interfaces such as the O1 interface. For virtualized network elements, the SMO framework 360 can interact with cloud computing platforms such as the Open Cloud (O-Cloud) platform 390 to perform network element lifecycle management (such as instantiating virtualized network elements) via cloud computing platform interfaces such as the O2 interface. Virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 350, and / or near-RT RIC 370. In some aspects, the SMO framework 360 can communicate with hardware aspects of the 4G RAN, 5G NR RAN, and / or 6G RAN (such as the Open eNB (O-eNB) 380) via the O1 interface. Additionally or alternatively, the SMO framework 360 can communicate directly with each of one or more RUs 340 via the corresponding O1 interface. In some deployments, this configuration enables each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.

[0089] The non-RT RIC 350 may include or implement logic functions that enable non-real-time control and optimization of RAN elements and resources, including AI / ML workflows for model training and updates, and / or policy-based guidance of applications and / or features in the near-RT RIC 370. The non-RT RIC 350 may be coupled to or communicate with the near-RT RIC 370, such as via an A1 interface. The near-RT RIC 370 may include or implement logic functions that enable near real-time control and optimization of RAN elements and resources via an interface, such as an E2 interface, through data collection and actions, connecting one or more CU 310s, one or more DU 330s, and / or O-eNBs to the near-RT RIC 370.

[0090] In some aspects, to generate AI / ML models to be deployed in the near-RT RIC 370, the non-RT RIC 350 may receive parameters or external enrichment information from an external server. This information can be utilized by the near-RT RIC 370 and can be received from non-network data sources or network functions at the SMO framework 360 or the non-RT RIC 350. In some examples, the non-RT RIC 350 or near-RT RIC 370 may modulate RAN behavior or performance. For example, the non-RT RIC 350 may monitor long-term trends and patterns in performance and may employ AI / ML models to perform corrective actions via the SMO framework 360 (such as reconfiguration via the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0091] As pointed out above, Figure 3 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 3 The examples described are different.

[0092] Figure 1 , Figure 2 or Figure 3 Network node 110, its controller / processor 240, UE 120, UE 120's controller / processor 280, CU 310, DU 330, RU 340, or any other component may implement one or more techniques associated with dynamic port selection for time and phase synchronization of CJT, or perform one or more operations associated with dynamic port selection for time and phase synchronization of CJT, as described in more detail elsewhere herein. For example, network node 110's controller / processor 240, UE 120's controller / processor 280, CU 310, DU 330, RU 340, or any other component may implement one or more techniques associated with dynamic port selection for time and phase synchronization of CJT, or perform one or more operations associated with dynamic port selection for time and phase synchronization of CJT, as described in more detail elsewhere herein. Figure 2 Any other component, CU 310, DU330, or RU 340, may (alone or in combination with one or more other processors) perform or direct, for example... Figure 12 Process 1200 Figure 13 The operation of process 1300 or other processes as described herein. In some aspects, the TRP described herein is network node 110, included in network node 110, or includes Figure 2One or more components of the network node 110 shown. Memory 242 may store data and program code for network node 110, CU 310, DU 330, or RU 340. Memory 282 may store data and program code for UE 120. In some examples, memory 242 or memory 282 may include a non-transitory computer-readable medium storing instruction sets (e.g., code or program code) for wireless communication. Memory 242 may include one or more memories, such as a single memory or multiple different memories (of the same or different types). Memory 282 may include one or more memories, such as a single memory or multiple different memories (of the same or different types). For example, the instruction set may be made executable by one or more processors when executed by one or more processors of network node 110, UE 120, CU 310, DU 330, or RU 340 (e.g., directly, or after compilation, transformation, or interpretation). Figure 12 Process 1200 Figure 13 The process 1300 or other processes as described herein. In some examples, the execution instructions may include run instructions, transform instructions, compile instructions, and / or interpret instructions, etc.

[0093] In some aspects, the UE (e.g., UE 120) includes: a configuration for using multiple antenna ports. M Each SRS port is used to send one or more SRS components. M The first integer; and / or used from N A CSI-RS resource set receives components from multiple CSI-RS. N The second integer, N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, the reception being based at least in part on at least one of the following: a first operating condition specifying the use of at least the same set of antenna ports from a plurality of antenna ports for use. N The first CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among multiple CSI-RSs and use N The second CSI-RS resource set in the first CSI-RS resource set. M A corresponding CSI-RS resource to receive a second CSI-RS among multiple CSI-RSs; or a second operating condition specifying the use of a resource included in the method for transmitting one or more SRSs. M Each antenna port in the SRS ports is used to receive... NEach corresponding CSI-RS resource set in the CSI-RS resource set M Each corresponding CSI-RS resource is included. M Each antenna port in the SRS ports is linked to N CSI-RS resource set M A corresponding CSI-RS resource. Components that enable the UE to perform the operations described herein may include, for example, one or more of the following: communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0094] In some aspects, the first TRP (e.g., network node 110) includes: components for receiving SRS from the UE; components for transmitting CSI-RS at least partially based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least partially based on SRS; and / or components for receiving indications of time and phase offsets between the first TRP and the second TRP. Components for the first TRP to perform the operations described herein may include, for example, one or more of the following: communication manager 150, transmit processor 214, TX MIMO processor 216, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, or scheduler 246.

[0095] As pointed out above, Figure 3 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 3 The examples described are different.

[0096] Figure 4 An example logical architecture of a distributed RAN 400 according to this disclosure is illustrated.

[0097] 5G access node 405 may include access node controller 410. Access node controller 410 may be the central unit (CU) of a distributed RAN 400. In some aspects, backhaul interfaces to the 5G core network 415 may be terminated at access node controller 410. 5G core network 415 may include 5G control plane components 420 and 5G user plane components 425 (e.g., 5G gateways), and backhaul interfaces for one or both of the 5G control plane and 5G user plane may be terminated at access node controller 410. Additionally or alternatively, backhaul interfaces to one or more adjacent access nodes 430 (e.g., another 5G access node 405 and / or LTE access node) may be terminated at access node controller 410.

[0098] Access node controller 410 may include one or more TRPs 435 and / or may communicate with the one or more TRPs (e.g., via an F1 control (F1-C) interface and / or an F1 user (F1-U) interface). TRP 435 may include distributed units (DUs) and / or radio units (RUs) of the distributed RAN 400. In some aspects, TRP 435 may correspond to the combination of the above. Figure 1 The network node 110 is described. For example, different TRPs 435 may be included in different network nodes 110. Additionally or alternatively, multiple TRPs 435 may be included in a single network node 110. In some aspects, network node 110 may include a CU (e.g., access node controller 410) and / or one or more DUs (e.g., one or more TRPs 435). In some cases, TRP 435 may be referred to as a cell, panel, antenna array, or array.

[0099] The TRP 435 can connect to a single access node controller 410 or multiple access node controllers 410. In some respects, the architecture of the distributed RAN 400 can have dynamically configured split logical functions, referred to elsewhere in this document as function splitting. For example, the Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and / or Media Access Control (MAC) layer can be configured to terminate at the access node controller 410 or at the TRP 435.

[0100] In some aspects, multiple TRP 435s may transmit communications in the same Transmission Time Interval (TTI) (e.g., time slots, micro-slots, subframes, or symbols) or in different TTIs using different quasi-co-location (QCL) relationships (e.g., different spatial parameters, different Transmit Configuration Indicator (TCI) states, different pre-decoding parameters, and / or different beamforming parameters). In some aspects, the TCI state may be used to indicate one or more QCL relationships. TRP 435s may be configured to provide services to UE 120 individually (e.g., using dynamic selection) or jointly (e.g., using joint transmission with one or more other TRP 435s).

[0101] As pointed out above, Figure 4 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 4 The examples described are different.

[0102] Figure 5 This is a diagram illustrating example 500 of multi-TRP communication (sometimes referred to as multi-panel communication) according to this disclosure. Figure 5As shown, multiple TRP 505s can communicate with the same UE 120. The TRP 505 can correspond to the above-described combination... Figure 4 The TRP 435 described.

[0103] Multiple TRPs 505 (shown as TRP A and TRP B) can communicate with the same UE 120 in a coordinated manner (e.g., using coordinated multicast) to improve reliability and / or increase throughput. Such communication can be coordinated via an interface between TRPs 505 (e.g., a backhaul interface and / or access node controller 410). When TRPs 505 are co-located at the same network node 110 (e.g., when TRPs 505 are different antenna arrays or panels of the same network node 110), the interface can have lower latency and / or higher capacity, and when TRPs 505 are located at different network nodes 110, the interface can have higher latency and / or lower capacity (compared to co-location). Different TRPs 505 can communicate with the UE 120 using different QCL relationships (e.g., different TCI states), different demodulation reference signal (DMRS) ports, and / or different layers (e.g., different layers in multi-layer communication).

[0104] In the first multi-TRP transmission mode (e.g., mode 1), a single physical downlink control channel (PDCCH) can be used to schedule downlink data communication on a single physical downlink shared channel (PDSCH). In this case, multiple TRPs 505s (e.g., TRP A and TRP B) can transmit communication to UE 120 on the same PDSCH. For example, a single codeword with different spatial layers for different TRPs 505s can be used to transmit communication (e.g., one codeword maps to a first set of layers transmitted by the first TRP 505 and to a second set of layers transmitted by the second TRP 505). As another example, multiple codewords can be used to transmit communication, where different codewords are transmitted by different TRPs 505s (e.g., using different sets of layers). In either case, different TRPs 505s can use different QCL relationships (e.g., different TCI states) for different DMRS ports corresponding to different layers. For example, a first TRP 505 may use a first QCL relationship or a first TCI state for a first set of DMRS ports corresponding to a first set of layers, and a second TRP 505 may use a second (different) QCL relationship or a second (different) TCI state for a second (different) group of DMRS ports corresponding to a second (different) group of layers. In some aspects, the TCI state in the downlink control information (DCI) (e.g., transmitted on the PDCCH, such as DCI format 1_0 or DCI format 1_1) may indicate a first QCL relationship (e.g., by indicating a first TCI state) and a second QCL relationship (e.g., by indicating a second TCI state). The first TCI state and the second TCI state may be indicated using the TCI field in the DCI. Generally, in this multi-TRP transmission mode (e.g., mode 1), the TCI field may indicate a single TCI state (for single TRP transmission) or multiple TCI states (for multi-TRP transmission as discussed herein).

[0105] In the second multi-TRP transmission mode (e.g., mode 2), multiple PDCCHs can be used to schedule downlink data communication for multiple corresponding PDSCHs (e.g., one PDCCH for each PDSCH). In this case, a first PDCCH can be scheduled to transmit a first codeword by a first TRP 505, and a second PDCCH can be scheduled to transmit a second codeword by a second TRP 505. Furthermore, a first DCI (e.g., transmitted by the first TRP 505) can be scheduled to communicate with a first PDSCH associated with a first set of DMRS ports having a first QCL relationship (e.g., indicated by a first TCI state) for the first TRP 505, and a second DCI (e.g., transmitted by the second TRP 505) can be scheduled to communicate with a second PDSCH associated with a second set of DMRS ports having a second QCL relationship (e.g., indicated by a second TCI state) for the second TRP 505. In this case, (for example, a DCI with DCI format 1_0 or DCI format 1_1) can indicate the corresponding TCI state for TRP 505 corresponding to that DCI. The TCI field of the DCI indicates the corresponding TCI state (for example, the TCI field of the first DCI indicates the first TCI state and the TCI field of the second DCI indicates the second TCI state).

[0106] As pointed out above, Figure 5 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 5 The examples described are different.

[0107] Figure 6 This is a diagram illustrating an example 600 of a wireless communication process between a UE 602 (e.g., UE 120), a first TRP 604 (e.g., a first network node 110), and a second TRP 606 (e.g., a second network node 110) according to this disclosure.

[0108] In CJT, multiple TRPs can transmit and / or receive data from the UE in a synchronous and / or coherent manner. As an example, a first TRP (e.g., first TRP 604) and a second TRP (e.g., second TRP 606) can perform phase registration and / or time registration on their respective transmissions to arrive at the UE 602 in phase with each other, thereby mitigating constructive interference and thus improving the received signal quality at the UE 602 (e.g., a higher power level). Specifically, the first and second TRPs can generate a joint transmission that combines a first signal from the first TRP and a second signal from the second TRP to produce a combined signal with a higher received signal power level at the UE relative to the individual received power of the first and / or second signals. In some aspects, the TRPs can use information about the corresponding channel between each TRP and the UE to select transmission weights or other transmission parameters (e.g., timing offset and / or phase offset) to improve constructive interference and thus enhance the received signal quality. Figure 6 Example 600 shown is a wireless communication process between UE 602, first TRP 604 and second TRP 606, which can be used to estimate the relative timing offset and / or relative phase offset between the first TRP 604 and the second TRP 606.

[0109] As shown by reference numeral 610 in the accompanying drawings, UE 602 may transmit one or more SRSs, and a first TRP 604 and / or a second TRP 606 may receive such one or more SRSs. In some aspects, UE 602 transmits a single SRS received by both the first TRP 604 and the second TRP 606. In other aspects, UE 602 may transmit multiple SRSs (e.g., a first SRS directed to the first TRP 604 and a second SRS directed to the second TRP 606). UE 602 may use a single transceiver to transmit one or more SRSs, such as in a scenario where UE 602 includes multiple transceivers, where the multiple transceivers do not guarantee phase coherence between corresponding signals transmitted via corresponding transceivers among the multiple transceivers. An SRS received by the first TRP 604 may be represented as:

[0110] And the SRS received by the second TRP 606 (e.g., the same SRS as the first TRP 604 and / or different SRS) can be represented as:

[0111] in:

[0112] This indicates a transmitting-side phase mismatch in the signal, which is at least partially based on: [the following text appears to be incomplete and requires further context for accurate translation] The transmit-side phase ramp generated on adjacent subcarriers at intervals, which is at least partially based on the transceiver hardware at the transmit side; and the phase uncertainty introduced by transmit-side clock jitter (e.g., ),in The subscripts "UE", "TRP1", and / or "TRP2" may be included to indicate the transmitter device at subcarrier k as used above and / or below.

[0113] This indicates a receiver-side phase mismatch in the signal, which is at least partially based on: The receiver-side phase ramp on adjacent subcarriers spaced apart, which is at least partially based on the transceiver hardware at the receiver; and the phase uncertainty introduced by receiver-side clock jitter (e.g., ),in The subscripts “UE”, “TRP1”, and / or “TRP2” can be used to specify the receiving device used at subcarrier k as described above and / or below.

[0114] This represents the uplink communication channel characterization, where The uplink channel between the UE and another device can be identified using the subscripts “TRP1” and / or “TRP2”, as used above and / or below.

[0115] This represents the downlink communication channel characterization, where The subscripts “TRP1” and / or “TRP2” can be used to identify the downlink channel between the UE and another device, as used above and / or below.

[0116] In the formulas and / or expressions above, This represents the transmitter timing skew introduced by clock jitter at the transmitter device (e.g., by frequency difference). Transmitter phase ramps on adjacent subcarriers (spaced out), where The subscripts “UE”, “TRP1” and / or “TRP2” may be included to identify the transmitter device as used above and / or below. This represents the receiver timing skew introduced by clock jitter at the receiver device (e.g., by frequency difference). (Receiver phase ramps on adjacent subcarriers at intervals), where The subscripts “UE”, “TRP1” and / or “TRP2” may be included to indicate the receiver device as used above and / or below. This represents the phase uncertainty introduced by the transmitter-side clock jitter, where The transmitter device as used above and / or below can be identified using the subscripts “UE”, “TRP1” and / or “TRP2”. This represents the phase uncertainty introduced by receiver-side clock jitter, where The receiver device used above and / or below may be identified by the subscripts “UE”, “TRP1” and / or “TRP2”.

[0117] As indicated by reference numeral 620, the first TRP 604 may transmit a first pre-decoded CSI-RS, and the UE 602 may receive the first pre-decoded CSI-RS. In some aspects, "pre-decoding" may mean applying information to a signal (e.g., CSI-RS) to modify the signal in a manner that improves the signal quality at the receiver (e.g., reduces interference and / or increases power levels). For example, using the received CSI-RS, the first TRP 604 may derive the channel characteristics of a first channel between the first TRP 604 and the UE 602. The first TRP 604 may apply pre-decoding to the CSI-RS, and the pre-decoding may be configured to mitigate distortion in the CSI-RS that is at least partially based on channel propagation and / or channel phase (e.g., associated with the first channel). For illustration, the first TRP 604 may apply information at least partially based on phase conjugation. The pre-decoded CSI-RS is applied to the CSI-RS based at least on the phase of the received SRS. In some aspects, the first pre-decoded CSI-RS can be a single-port CSI-RS (e.g., transmitted via a single antenna port of the first TRP 604). The first pre-decoded CSI-RS received by the UE 602 can be represented as:

[0118] Using the methods discussed above for... , , and The description, in which This indicates the phase conjugate of the SRS as described above.

[0119] As shown by reference numeral 630, the second TRP 606 can transmit a second pre-decoded CSI-RS, and the UE 602 can receive the second pre-decoded CSI-RS. For illustration, using the received CSI-RS, the second TRP 606 can derive the channel characteristics of a second channel between the second TRP 606 and the UE 602, and the second TRP 606 can be configured to apply pre-decoding to mitigate distortion in the CSI-RS, which is at least partially based on channel propagation and / or channel phase associated with the second channel. For illustration, the second TRP 606 can apply pre-decoding at least partially based on phase conjugation... The pre-decoded CSI-RS is applied to the CSI-RS based at least on the phase of the received SRS. In some aspects, the second pre-decoded CSI-RS can be a single-port CSI-RS (e.g., transmitted via a single antenna port of the second TRP 606). The second pre-decoded CSI-RS received by UE 602 can be represented as:

[0120] Using the methods discussed above for... , , and The description, in which It is the phase conjugate of SRS as described above.

[0121] As shown by reference numeral 640 in the attached figure, UE 602 can calculate and / or estimate the time offset and / or phase offset between the first TRP 604 and the second TRP 606. As an example, UE 602 can use the following formula to calculate the inter-TRP time offset between the first TRP 604 and the second TRP 606 as the time offset: .

[0122] Alternatively or additionally, UE 602 may use the following formula to calculate the inter-TRP phase offset between the first TRP 604 and the second TRP 606 as the phase offset: .

[0123] For example, UE 602 can calculate:

[0124] This eliminates the phase uncertainty caused by UE transmission and reception. That is, by eliminating the phase uncertainty caused by UE transmission and reception, the remaining time offset and / or phase offset are the inter-TRP timing offset and inter-TRP phase offset described above. In some aspects, UE 602 can estimate across multiple subcarriers... k= 1,…, K of To calculate the TRP timing offset and / or TRP phase offset between the first TRP 604 and the second TRP 606, where k and K It is an integer, and k The changes in the values ​​cause the estimated values ​​to cover the entire bandwidth.

[0125] As indicated by reference numeral 650, UE 602 may transmit a time offset and / or phase offset calculated with respect to reference numeral 640, and at least one of the first TRP 604 and / or TRP 606 may receive the time offset and / or phase offset. UE 602 may transmit the time offset and / or phase offset in any combination of Layer 1 signaling (e.g., uplink control information (UCI)), Layer 2 signaling (e.g., media access control (MAC) control element (CE)), and / or Layer 3 signaling (e.g., radio resource control (RRC) signaling).

[0126] As shown by reference numeral 660 in the attached figure, the second TRP 606 may be synchronized with the first TRP 604. For example, the second TRP 606 may use timing offset and / or phase offset to adjust the transmission of the first downlink signal performed by the second TRP 606 to improve synchronization with the second downlink signal performed by the first TRP 604 (e.g., reducing timing offset and / or reducing phase offset between transmissions). The first downlink signal and the second downlink signal may be part of a CJT pointing to the UE 602.

[0127] As pointed out above, Figure 6 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 6 The examples described are different.

[0128] Figure 7 This is a diagram illustrating an example 700 of a wireless communication process between a UE 702 (e.g., UE 120), a first TRP 704 (e.g., a first network node 110), and a second TRP 706 (e.g., a second network node 110) according to this disclosure.

[0129] As indicated by reference numeral 710 in the accompanying drawings, UE 702 may include multiple transceivers. More specifically, and as shown in the figures... Figure 7 As shown, UE702 may include M One transceiver, of which M The values ​​are integers, and each transceiver can be associated with a corresponding antenna port.

[0130] As shown by reference numeral 720 in the attached figure, UE 702 can transmit one or more SRSs, and at least one of the first TRP 704 and the second TRP 706 can receive the one or more SRSs. As an example, UE 702 can transmit... M >1 SRS, and each SRS can be transmitted via a corresponding transceiver and / or a corresponding SRS port. In some aspects, network nodes (e.g., first TRP 704 and / or second TRP 706) can send SRS port configuration information to UE 702, which configures more than one SRS port at UE 702. Examples of SRS port configuration may include SRS periodicity, SRS bandwidth, and / or SRS antenna port configuration (e.g., one or more antennas for the SRS port). In some aspects, UE 702 may be configured with M Each SRS port can be used to transmit a corresponding SRS. Alternatively or additionally, the UE 702 may use more than one antenna port to transmit one or more SRSs.

[0131] like Figure 7 As shown, the SRS received by the first TRP 704 can be represented as: , Using the description described above. Subscript TRP1←UE[1] refers to the first SRS signal sent by UE 702 via the first SRS port and received by the first TRP 704. Subscript TRP1←UE[ M ] refers to UE 702 via the first M The first SRS port sends and is received by the first TRP 704. M A single SRS signal. Similarly, the SRS received by the second TRP 706 can be represented as: , Using the description described above. Subscript TRP2←UE[1] refers to the first SRS signal sent by UE 702 via the first SRS port and received by the second TRP 706, and subscript TRP2←UE[ M ] refers to UE 702 via the first M The first SRS port sends and is received by the second TRP 706. M One SRS signal.

[0132] As indicated by reference numeral 730 in the attached figure, the first TRP 704 can transmit at least partially based on MThe first CSI-RS is a CSI-RS resource of >1, and the UE 702 can receive the first CSI-RS, and each part of the first CSI-RS carried by the corresponding CSI-RS resource can be pre-decoded at least in part based on the corresponding SRS and / or the corresponding SRS port. For example, in a similar manner to that described with respect to reference numeral 620, the first TRP 704 can use at least the phase conjugate of the first SRS received by the first TRP 704 (e.g., ) to pre-decode the first part of the first CSI-RS (e.g., carried by the first CSI-RS resource), and to use the first part received by the first TRP 704 M At least phase conjugate of each SRS (e.g., ) to (for example, by the first M The first CSI-RS resource carried by the CSI-RS M Partial pre-decoding is performed.

[0133] In some respects, UE 702 may receive a first CSI-RS transmitted by the first TRP 704 using the same antenna port included in the SRS port. For illustration, UE 702 may use the first antenna port included in the first SRS port to receive (e.g., carried by the first CSI-RS resource) a first portion of the first CSI-RS, which is at least partially pre-decoded based on the first SRS transmitted by UE 702 using the first SRS port, and can be represented as follows: , Using the description described above. The subscript UE[1]←TRP1←UE[1] indicates that this portion of the first CSI-RS received by UE 702 is received via the first antenna port (e.g., indicated by the leftmost UE[1]), the first CSI-RS is transmitted by the first TRP 704 (e.g., indicated by TRP1), and the first TRP 704 pre-decodes the first portion of the CSI-RS at least in part based on the first SRS transmitted by UE 702 using the first SRS port (e.g., indicated by the rightmost UE[1]). In some aspects, the first receive antenna port may be a specific transceiver antenna port included in and / or used by the first SRS port. As another example, UE 702 may receive the first portion of the CSI-RS. M Part M of the CSI-RS is at least partially based on the UE 702 via the first M The first SRS port sent the first M One SRS is used for pre-decoding: , Subscript UE[M ]←TRP1←UE[ M At least a portion of the CSI-RS instruction is provided by UE 702 via the first M The data received by each antenna port (e.g., by the leftmost UE) M The CSI-RS is sent by the first TRP 704 (e.g., indicated by TRP1), and the first TRP 704 uses the signal sent by the UE 702 via the first... M The first SRS port sent the first M A SRS is used to pre-decode this part of the CSI-RS (e.g., by the rightmost UE [ M [Instructions]. In some respects, the first M The antenna port can be included in the first M One of the SRS ports and / or the specific transceiver antenna port used by it.

[0134] In some respects, UE 702 may optionally or additionally use an antenna port different from the pre-decoded portion associated with the CSI-RS to receive that portion of the CSI-RS. For example, that portion of the CSI-RS may be pre-decoded at least in part based on an SRS port including a first antenna port, and the UE may use a second antenna port not included in the SRS port to receive that portion of the CSI-RS, which may also be referred to as a cross-link signal and / or transmit-receive (Tx-Rx) mismatch signal. A cross-link signal may be represented as: , Where the subscript UE[ M ]←TRP1←UE[1] indicates that the UE 702 is connected via the first M Each receiving antenna port receives (e.g., by the UE [ M The portion of the CSI-RS transmitted by the first TRP 704 (e.g., indicated by TRP1) is at least partially based on the SRS transmitted by the UE 702 using the first SRS port (e.g., indicated by UE[1]). Therefore, for the CSI-RS resource set M One SRS port and / or M A CSI-RS resource, a pre-decoded CSI-RS, and a combination of receive antenna ports and / or transceiver antenna ports can be represented by the following matrix:

[0135] Each row of the matrix is ​​based at least in part on a specific antenna port used by the UE to receive CSI-RS. For illustration, the top row of the matrix is ​​associated with the first antenna port indicated by the UE[1] located at the leftmost position of the subscript. Each column of the matrix represents a specific pre-decoding basis (e.g., a specific SRS and / or a specific SRS port used to transmit SRS) for a specific portion of CSI-RS (e.g., a specific CSI-RS resource) and / or the pre-decoding applied to that portion of CSI-RS. For example, the first column on the left is associated with the first SRS and / or the first SRS port indicated by the UE[1] located at the rightmost position of the subscript.

[0136] As indicated by reference numeral 740 in the attached figure, the second TRP 706 can transmit at least partially based on M The second CSI-RS of the CSI-RS resource, and the UE 702 can receive the second CSI-RS, wherein M >1. Each portion of the CSI-RS carried by the corresponding CSI-RS can be pre-decoded at least in part based on the corresponding SRS and / or the corresponding SRS port. For example, in a manner similar to that described with respect to reference numerals 620 and 730, the second TRP 706 can be pre-decoded by applying at least in part based on the phase conjugate of the first SRS received by the second TRP 704 (e.g., The pre-decoding is performed to pre-decode the first part of the CSI-RS carried by the first CSI-RS resource, and by applying at least part of the pre-decoding based on the first part received by the second TRP 706. M Phase conjugate of each SRS (e.g., The pre-decoding of CSI-RS is used to... M Partial pre-decoding is performed.

[0137] In a similar manner to that described with respect to reference numeral 730, each antenna port of UE 702 may receive at least a portion of the second CSI-RS transmitted by the second TRP 706, which can be represented as follows: ,…,

[0138] Use the description described above. Subscript UE[1]←TRP2←UE[1] indicates the first part of the CSI-RS received by UE 702 via the first antenna port (e.g., indicated by the leftmost UE[1]), the first part of the CSI-RS transmitted by the second TRP 706 (e.g., indicated by TRP2), and the second TRP 706 pre-decodes the first part of the CSI-RS at least in part based on the first SRS transmitted by UE 702 using the first SRS port. Subscript UE[ M ]←TRP2←UE[M Instructions are given by UE702 via the first M The first CSI-RS received at the antenna port M Part (e.g., by the leftmost UE[ M [Instruction], the CSI-RS sent by the second TRP 706 M Partial (e.g., indicated by TRP2), and the second TRP 706 is at least partially based on the use of the first by UE 702. M The first SRS port sent the first M The first SRS to the CSI-RS M Partial pre-decoding (e.g., by the rightmost UE [ M (Indication). In a similar manner to that described with respect to reference numeral 730, UE 702 can receive a combination of pre-decoded CSI-RS via a combination of antenna ports, and the combination of pre-decoded CSI-RS and receive antenna ports (and / or transceiver antenna ports) can be represented by the following matrix:

[0139] As shown by reference numeral 750 in the attached figure, UE 702 may use pre-decoded CSI-RS and / or SRS to calculate time offset (e.g., inter-TRP time offset) and / or phase offset (e.g., inter-TRP phase offset). As an example, UE 702 may calculate the time offset and / or phase offset at least in part based on the received signals described above (e.g., as indicated in the matrix above). until ), to calculate the total from each TRP One received signal item, and / or using the The received signal items are used to derive the timing offset between TRPs. ) and / or phase shift between TRPs ( For example, and in relation to... Figure 6 In a similar manner as described, UE 702 can target multiple subcarriers (e.g., k = 1, … , K To calculate This allows us to derive the timing offset between TRPs and / or the phase offset between TRPs.

[0140] As indicated by reference numeral 760, UE 702 may transmit a time offset and / or phase offset calculated as indicated by reference numeral 750, and at least one of the first TRP 704 and / or TRP 706 may receive the time offset and / or phase offset. UE 702 may transmit the time offset and / or phase offset in any combination of Layer 1 signaling (e.g., UCI), Layer 2 signaling (e.g., MAC CE), and / or Layer 3 signaling (e.g., RRC signaling).

[0141] As indicated by reference numeral 770 in the accompanying drawings, the second TRP 706 may be synchronized with the first TRP 704. For example, the second TRP 706 may use timing offset and / or phase offset to adjust the transmission of the first downlink signal performed by the second TRP 706 to improve synchronization with the second downlink signal performed by the first TRP 704 (e.g., reducing timing offset and / or reducing phase offset). The first downlink signal and the second downlink signal may be part of a CJT pointing to the UE 702.

[0142] Example 700 can be extended such that in other examples, one or more TRPs may include multiple antenna ports, and the above mathematical representations and / or formulas can be extended to apply to TRPs with multiple antenna ports to offset channel propagation delay and / or channel phase offset, thereby obtaining inter-TRP time offset and / or inter-TRP phase offset.

[0143] As pointed out above, Figure 7 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 7 The examples described are different.

[0144] Figure 8 This is a diagram illustrating example 800 of a link between a CSI-RS resource set and an SRS resource set according to this disclosure.

[0145] Such as about Figure 7 As described, the UE (e.g., UE 120) can transmit multiple SRSs via multiple SRS ports, such as by transmitting multiple single SRS ports and / or one or more multi-SRS ports. For illustration, the UE can be configured to include... M A single SRS resource for each port, or each resource associated with a different SRS port. M A single-port SRS resource. In Example 800, M =2, and the UE has been configured with an SRS resource set including the first SRS port 804-1 and the second SRS port 804-2 (each port is shown as a plain white disk).

[0146] Alternatively or additionally, the UE can be configured to receive NA set of CSI-RS resources, among which N This is an integer representing the number of TRPs. For illustration, in example 800, the UE is configured to receive data for two TRPs. N = 2 CSI-RS resource sets: with the first TRP (e.g., as about Figure 6 The first TRP 604 described and / or as per [reference] Figure 7 The first TRP 704 described is associated with the first CSI-RS resource set 806, and with the second TRP (e.g., as described in relation to...). Figure 6 The second TRP 606 described and / or as per [the description] Figure 7 The second CSI-RS resource set 808 associated with the second TRP 706 described herein. Each CSI-RS resource set may include at least M One CSI-RS resource. For example... Figure 8 As shown, the first CSI-RS resource set 806 includes at least a first CSI-RS resource 810-1 and a second CSI-RS resource 810-2 (shown in a dot pattern), and the second CSI-RS resource set 808 includes at least a first CSI-RS resource 812-1 and a second CSI-RS resource 812-2.

[0147] Each CSI-RS resource in a CSI-RS resource set may be linked to a corresponding SRS port in an SRS resource set (e.g., an SRS port and / or SRS resource configured for the UE). Referring to CSI-RS resources and SRS ports, "link" may refer to a CSI-RS resource (e.g., time-domain and frequency-domain resources) carrying a signal (e.g., CSI-RS) that is at least partially pre-decoded based on the SRS port. That is, a link between a CSI-RS resource and an SRS port may indicate that the CSI-RS carried by the CSI-RS resource is at least partially pre-decoded based on the linked SRS port. For example, a CSI-RS resource linked to an SRS may be pre-decoded at least based on the phase of a received SRS signal using the SRS port and / or SRS resource. In some aspects, this link may be indicated and / or configured by a network node (e.g., network node 110), such as by indicating the link in RRC signaling via the network node. As an example, the network may indicate the link between CSI-RS resources and SRS ports in a first RRC signaling indicating CSI-RS resource configuration and / or a second RRC signaling indicating SRS resource configuration and / or SRS port configuration.

[0148] As shown by reference numeral 814, the first CSI-RS resource 810-1 in the first CSI-RS resource set 806 is linked to the first SRS port 804-1 (shown by a dashed line), and as shown by reference numeral 816, the second CSI-RS resource 810-2 in the first CSI-RS resource set 806 is linked to the second SRS port 804-2 (shown by a solid line). Similarly, as shown by reference numeral 818, the first CSI-RS resource 812-1 in the second CSI-RS resource set 808 is linked to the first SRS port 804-1 (shown by a dashed line), and as shown by reference numeral 820, the second CSI-RS resource 812-2 in the second CSI-RS resource set 808 is linked to the second SRS port 804-2 (shown by a solid line). Therefore, the corresponding CSI-RS resources from each CSI-RS resource set are linked to the same SRS port.

[0149] about Figure 6 and Figure 7 The described calculations are at least partially based on offsetting channel delay and / or channel phase by pre-decoding each CSI-RS at least partially based on the specific SRS port used by the UE to transmit a particular SRS. Alternatively or additionally, regarding Figure 6 and Figure 7 The described calculations are at least partially based on offsetting channel delay and / or channel phase by the UE using a specific receive antenna port to receive pre-decoded CSI-RS, such as a specific transceiver antenna port used to transmit a specific SRS in a specific SRS port.

[0150] As a scenario, the UE can transmit a single-port SRS. In order to use the above formula to offset channel delay and / or channel phase, the UE can use the same antenna port (e.g., transceiver antenna port) used for the single-port SRS to receive the corresponding pre-decoded CSI-RS.

[0151] As another scenario, the UE can transmit multiple SRSs via multiple SRS ports, such as SRSs based at least in part on multi-port SRSs using more than one antenna port, and / or multiple SRSs using respective (single) SRS ports. In a multi-port SRS scenario, the UE can use the same antenna port (e.g., transceiver antenna port) used in the SRS port associated with pre-decoding to receive pre-decoded CSI-RS, and / or can use a different antenna port (e.g., a different transceiver antenna port) than the SRS port associated with pre-decoding to receive pre-decoded CSI-RS. Pre-decoded CSI-RS (and / or a pre-decoded portion of CSI-RS) received by the UE using an antenna port different from the SRS port used for pre-decoding can be referred to as cross-link signaling and / or Tx-Rx mismatch as described above. In some operational scenarios, the UE may be unable to compensate for cross-link signals and / or Tx-Rx mismatch, resulting in inaccurate inter-TRP phase offset estimation and / or inter-TRP timing offset estimation. The amount of inaccuracy causes asynchrony in transmissions from the first TRP and the second TRP (e.g., CJT performed by the TRP). Asynchronous transmissions between TRPs can lead to reduced signal quality at the UE (e.g., signal power levels that meet low power thresholds), increased data recovery errors, reduced data throughput, and / or increased data transmission latency.

[0152] Some of the technologies and apparatus described herein provide dynamic port selection for time and phase synchronization of CJT. In some aspects, the UE can use multiple antenna ports configured... M One SRS port is used to send one or more SRS ( M (The first integer). UE can use N A set of CSI-RS resources to receive multiple CSI-RS ( N (The second integer). In some respects, N Each corresponding CSI-RS resource set in a CSI-RS resource set may include M Each UE may receive multiple CSI-RS resources, at least in part, based on one or more operating conditions. As an example, a first operating condition may specify that the UE uses at least the same set of antenna ports (e.g., from multiple antenna ports) to use a first set of CSI-RS resources (e.g., from...). N indivual CSI-RS In the resource set M A corresponding CSI-RS resource is used to receive (e.g., one of multiple CSI-RSs) at least the first CSI-RS and use (e.g., N (From the first CSI-RS resource set) The second CSI-RS resource set MA corresponding CSI-RS resource is used to receive (e.g., one of multiple CSI-RSs) the second CSI-RS. As another example, the second operating condition may specify that the UE uses a resource included in the transmission of one or more SRSs. M Each antenna port in the SRS ports is used to receive (e.g., N (In each corresponding CSI-RS resource set) M Each corresponding CSI-RS resource. In some respects, it is included. M Each antenna port in the SRS ports can be linked to N The corresponding CSI-RS resource in each of the CSI-RS resource sets.

[0153] Using one or more operating conditions specifying allowed and / or disallowed antenna ports for receiving pre-decoded CSI-RS enables a UE (e.g., UE 120) to eliminate cross-link signals and / or Tx-Rx mismatches, and to improve the accuracy of inter-TRP phase offset estimation and / or inter-TRP timing estimation, as described below. Specifically, these operating conditions ensure that the UE uses the same antenna port to receive pre-decoded CSI-RS resources belonging to different CSI-RS resource sets but associated with the same SRS port (e.g., first CSI-RS resource 810-1 in the first CSI-RS resource set 806 and first CSI-RS resource 812-1 in the second CSI-RS resource set 808 associated with the first SRS port 804-1), thereby enabling the UE to eliminate cross-link signals. Example operating conditions may include: a first operating condition specifying that at least a first CSI-RS of a plurality of CSI-RSs is received using the same set of at least one set of antenna ports from a plurality of antenna ports at the UE (e.g., using a first CSI-RS resource set associated with the first CSI-RS). M (one corresponding CSI-RS resource) and a second CSI-RS in multiple CSI-RS (e.g., using...) N The second CSI-RS resource set in the first CSI-RS resource set. M (a corresponding CSI-RS resource); and / or a second operating condition specifying the use of resources for sending one or more SRSs. M Each antenna port in the SRS ports is used to receive (e.g., from multiple CSI-RS resource sets) each corresponding CSI-RS resource set. M Each corresponding CSI-RS resource is included. M Each antenna port in the SRS ports is linked to multiple CSI-RS resource sets. M Each corresponding CSI-RS resource.

[0154] For example, and using, as about Figure 7 The symbols described, for two SRS received at the first TRP (e.g., first TRP 604 and / or first TRP 704) via the link with the UE (e.g., UE 602 and / or UE 702), can be represented as:

[0155] A similar representation can be used for two SRSs received at a second TRP that operates in a CJT manner with the first TRP.

[0156] On the UE side, CSI-RS resources and / or CSI-RS received at the UE using antenna ports linked to the corresponding CSI-RS resources can be referred to as self-terms. (Using as per...) Figure 7 The symbols described can be used to calculate the self-terms at the UE using the following formula in its extended form: (1) (2).

[0157] On the UE side, the cross-link signal and / or Tx-Rx mismatch signal can be expressed as: (3a) (3b) The subscript in (3a) The subscript in (3b) refers to the second CSI-RS resource that is sent by the first TRP, pre-decoded at least in part based on the second SRS port (e.g., using TRP1[2]), and received by the UE using the antenna port associated with the first SRS port (e.g., UE[1]). This refers to the first CSI-RS resource sent by the first TRP, pre-decoded at least in part based on the first SRS port (e.g., using TRP1[1]), and received by the UE using an antenna port associated with the second SRS port (e.g., UE[2]). Multiplying (3a) and (3b) yields: (3) The channel phase associated with the first TRP is canceled. A similar calculation can be applied to CSI-RS transmissions performed by the second TRP (e.g., second TRP 606 and / or second TRP 706), and can be referred to respectively as ( ), ( ), ( ), ( )and( This is based, at least in part, on the following operational conditions: and Received on the same antenna port, and Received on the same UE antenna port and Received on the same UE antenna port and Received on the same UE antenna port Phase and / or timing offsets caused by cross-link signals and / or Tx-Rx mismatch signals can be eliminated by performing the following calculations: Formula (1) ×Formula (2) ×Formula (3) × Formula(1')×Formula(2')×Formula(3') Formula (1) This refers to the phase conjugate of (1) described above for the first TRP, and formula (2). This refers to the phase conjugate of (2) described above for the first TRP, and formula (3). This refers to the phase conjugate of (3) described above for the first TRP, formula (1') refers to (1) described above for the second TRP, formula (2') refers to (2) described above for the second TRP, and formula (3') refers to (3) described above for the second TRP. By using the above operating conditions, the UE can eliminate cross-link signal and / or Tx-Rx mismatch and improve the accuracy of inter-TRP phase offset estimation and / or inter-TRP timing offset estimation. Improving the accuracy of inter-TRP phase offset estimation and / or inter-TRP timing offset estimation can improve synchronization in the CJT between TRPs (e.g., reducing timing offset and / or reducing phase offset), thereby resulting in improved signal quality at the UE (e.g., signal power level that meets high power threshold), reduced data recovery errors, increased data throughput, and / or reduced data transmission latency.

[0158] As pointed out above, Figure 8 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 8 The examples described are different.

[0159] Figure 9A , Figure 9B , Figure 9C and Figure 9DThese are illustrations of first example 900, second example 920, third example 940 and fourth example 960, respectively, illustrating permitted and prohibited operating conditions according to this disclosure.

[0160] As described above, a UE (e.g., UE 120) may be configured with multiple SRS ports, and these multiple SRS ports may include M One SRS port (e.g., an SRS resource set can be connected to...) M Each SRS port is associated with one of them. M (is an integer greater than 1) and / or M Each single-port SRS (e.g., each SRS resource set is associated with a different single SRS port). In some aspects, the UE may optionally or additionally be configured with multiple CSI-RS resource sets, such as N A set of CSI-RS resources, among which N Let be a greater than 1 integer representing the number of TRPs with which the UE performs CJT. That is, the UE can be configured to have a corresponding CSI-RS resource set for each TRP, as per the information provided. Figure 8 As described. In some respects, and at least in part based on one or more operating conditions, for multiple CSI-RS resource sets, each CSI-RS resource set may be at least in part based on the UE being configured with M SRS ports to include at least M Each SRS port may be linked to multiple CSI-RS resources, either alternatively or additionally, and at least in part based on one or more operating conditions. For example, each SRS port may be linked to... N The corresponding CSI-RS resources in each CSI-RS resource set of a CSI-RS resource set, such as regarding Figure 8 As described.

[0161] In some aspects, the communication standard may specify one or more operating conditions. For example, as a first operating condition, the communication standard may specify that the UE uses the same set of antenna ports to receive CSI-RS resources in different CSI-RS resource sets. To illustrate, for multiple CSI-RS resource sets associated with multiple TRPs operating in a CJT scenario, the first operating condition specified by the communication standard may instruct the UE to use the same set of antennas from among multiple antennas at the UE to receive a first corresponding CSI-RS resource from each corresponding CSI-RS resource set. As a supplementary example, the communication standard may specify that the UE does not use different sets of antenna ports to receive different CSI-RS resource sets, such as using a first set of antenna ports to receive corresponding CSI-RS resources in a first CSI-RS resource set, and using a second (different) set of antenna ports to receive corresponding CSI-RS resources in a second CSI-RS resource set. As described above, the first operating condition may enable the UE to perform calculations to cancel cross-link signals and / or Tx-Rx mismatch signals to improve inter-TRP phase offset estimation and / or inter-TRP timing offset estimation.

[0162] Alternatively or additionally, as a second operating condition, the communication standard may specify that the UE uses the same one or more antenna ports linked to the corresponding SRS ports used for pre-decoding each corresponding CSI-RS resource in the CSI-RS resources to receive one or more CSI-RS resources in a particular CSI-RS resource set. For example, the second operating condition may instruct the UE to receive a first CSI-RS resource (e.g., in the CSI-RS resource set) that is pre-decoded at least partially based on a first SRS port using the same antenna port of the first SRS port, and the UE to receive a second CSI-RS resource (e.g., in the same CSI-RS resource set) that is pre-decoded at least partially based on a second SRS port using the same antenna port of the second SRS port. As described above, the second operating condition may enable the UE to perform calculations to cancel channel delay and channel phase, thereby improving inter-TRP phase offset estimation and / or inter-TRP timing offset estimation. In some aspects, the UE may include the same number of transmit antennas and receive antennas, and the UE may automatically satisfy at least one of the first or second conditions, at least in part, based on the link between the CSI-RS resource and the SRS port (e.g., a pre-decoded link). The first and / or second conditions may alternatively or additionally apply to scenarios in which the number of receive antennas at the UE is greater than the number of transmit antennas at the UE.

[0163] To further illustrate, Figure 9AA first example 900 is illustrated, which is a first permitted scenario that satisfies at least one of the first or second operating conditions described above. The first example 900 includes a UE 902, which includes multiple antenna ports. Figure 9A The antennas are shown as antenna port 1 (e.g., a first transmit / receive (Tx / Rx) antenna port), antenna port 2 (e.g., a second Tx / Rx antenna port), antenna port 3 (e.g., a first receive antenna port), and antenna port 4 (a second receive antenna port). In some aspects, UE 902 may be configured with M =2 SRS ports (in Figure 9A The UE 902 is shown as including antenna 1 and antenna 2. As indicated by reference numerals 908 and 910, the UE 902 can use the first antenna port and the second antenna port to transmit one or more SRSs, and one or more SRSs can be received by the first TRP 904 and the second TRP 906 (shown by the corresponding dashed lines from antenna port 1 and antenna port 2 to each TRP). The first TRP 904 can use at least M = Two corresponding CSI-RS resources are used to send the first CSI-RS, and these corresponding CSI-RS resources are at least partially based on UE 902. M =Two SRS ports are used for pre-decoding separately. Similarly, the second TRP 906 can use at least M = Two corresponding CSI-RS resources are used to send the second CSI-RS, and these corresponding CSI-RS resources are at least partially based on UE 902. M = Two SRS ports are used for pre-decoding respectively. At least in part based on satisfying at least one of the first operating conditions or the second operating conditions, UE 902 can use antenna port 1 and antenna port 2, which are used as SRS ports for transmitting SRS, to receive the corresponding CSI-RS resources.

[0164] Figure 9B The second example 920 shown is a second permitted scenario that satisfies at least one of the first or second operating conditions described above. The second example 920 includes information regarding... Figure 9A The UE 902, first TRP 904, and second TRP 906 are described. Similar to the first example 900, the UE 902 can be configured with... M =2 SRS ports (in Figure 9BThe diagram is shown as including antenna 1 and antenna 2. As indicated by reference numeral 922, UE 902 can use the first antenna port and the second antenna port to transmit one or more SRSs, and one or more SRSs can be received by the first TRP 904 and the second TRP 906 (shown by the corresponding dashed lines from antenna port 1 and antenna port 2 to each TRP). The first TRP 904 can use at least M = Two corresponding CSI-RS resources are used to send the first CSI-RS, and these corresponding CSI-RS resources are at least partially based on UE 902. M =Two SRS ports are used for pre-decoding separately. Similarly, the second TRP 906 can use at least M = Two corresponding CSI-RS resources are used to send the second CSI-RS, and these corresponding CSI-RS resources are at least partially based on UE 902. M =Two SRS ports are used for pre-decoding separately. However, as shown by reference numeral 924 and the dashed line with a one-way arrow, UE 902 may also use a third and fourth antenna to receive at least a portion of the first CSI-RS and / or the second CSI-RS. UE 902 may ignore signals received on antenna ports 3 and 4, such as by excluding those signals from calculations used to estimate inter-TRP phase offset and / or inter-TRP timing offset.

[0165] Figure 9C The third example 940 shown is a first disallowed scenario where both the first and second operating conditions described above are not met. The third example 940 includes information regarding... Figure 9A The description includes UE 902, first TRP 904, and second TRP 906. Similar to the first example 900, UE 902 can be configured to have... M =2 SRS ports (in Figure 9C The diagram is shown as including antenna 1 and antenna 2. As indicated by reference numeral 942, UE 902 can use the first antenna port and the second antenna port to transmit one or more SRSs, and one or more SRSs can be received by the first TRP 904 and the second TRP 906 (shown by the corresponding dashed lines from antenna port 1 and antenna port 2 to each TRP). The first TRP 904 can use at least M = Two corresponding CSI-RS resources are used to send the first CSI-RS, and these corresponding CSI-RS resources are at least partially based on UE 902. M =Two SRS ports are used for pre-decoding separately. Similarly, the second TRP 906 can use at least M= Two corresponding CSI-RS resources are used to send the second CSI-RS, and these corresponding CSI-RS resources are at least partially based on UE 902. M Two SRS ports are used for pre-decoding respectively. As shown by reference numeral 944 and the dashed line in the attached figure, UE 902 can use the third and fourth antenna ports to receive the corresponding CSI-RS from each TRP. Although UE 902 uses the same antenna ports to receive CSI-RS, the receive antenna ports are different from the antenna ports used by UE 902 to transmit SRS. That is, the receive antenna ports used by the UE to receive CSI-RS are not included in the SRS ports. Therefore, Figure 9C The third example shown does not meet the first and second operating conditions, and is an unauthorized operating scenario.

[0166] Figure 9D The fourth example 960 shown is a second disallowed scenario where both the first and second operating conditions described above are not met. The fourth example 960 includes information regarding... Figure 9A The description includes UE 902, first TRP 904, and second TRP 906. Similar to the first example 900, UE 902 can be configured to have... M =2 SRS ports (in Figure 9D The diagram is shown as including antenna 1 and antenna 2. As indicated by reference numeral 962, UE 902 can use the first antenna port and the second antenna port to transmit one or more SRSs, and one or more SRSs can be received by the first TRP 904 and the second TRP 906 (shown by the corresponding dashed lines from antenna port 1 and antenna port 2 to each TRP). The first TRP 904 can use at least M = Two corresponding CSI-RS resources are used to send the first CSI-RS, and these corresponding CSI-RS resources are at least partially based on UE 902. M =Two SRS ports are used for pre-decoding separately. As shown by reference numeral 962 and the use of double arrows, UE 902 can use antenna 1 and antenna 2 (e.g., the same antennas used in SRS transmission) to receive the first CSI-RS from the first TRP 904. As shown by reference numeral 964, the second TRP 906 can use at least M = Two corresponding CSI-RS resources are used to send the second CSI-RS, and these corresponding CSI-RS resources are at least partially based on UE 902. M=Two SRS ports are used for pre-decoding respectively. However, as shown in Figure 964, UE 902 can use a third antenna port and a fourth antenna port to receive the second CSI-RS (and / or CSI-RS resources associated with the second CSI-RS) from the second TRP. That is, UE 902 uses different sets of antenna ports (antenna ports 1 and 2 for the first TRP 904 and antenna ports 3 and 4 for the second TRP 906) to receive the corresponding CSI-RS resources from the first TRP 904 and the second TRP 906. Although the UE uses the same set of antenna ports as the SRS ports (antenna ports 1 and 2) to receive the first CSI-RS and / or the first CSI-RS resource set from the first TRP 904, UE 902 uses a different set of antenna ports (antenna ports 3 and 4) as the SRS ports (antenna ports 1 and 2) to receive the second CSI-RS and / or the second CSI-RS resource set from the second TRP 906. therefore, Figure 9D The fourth example shown does not meet the first and second operation conditions, and is an operation scenario that is not allowed.

[0167] Figure 10A and Figure 10B These are illustrations of a first example 1000 and a second example 1050, respectively, illustrating the link between a CSI-RS resource and an SRS port according to the instructions of this disclosure.

[0168] In CJT, a UE (e.g., UE 120) can use multiple antenna ports (e.g., one or more transmit antenna ports, one or more receive antenna ports, and / or one or more transceiver antenna ports) (such as multiple antenna ports for SRS transmission) to communicate with multiple TRPs. In some aspects, the additional signal gain transmitted may be at least partially based on cross-link signals and / or Tx-Rx mismatch signals, such as as expressed regarding Figure 8 The description and / or The cross-link signal. Alternatively or additionally, multiple transmit ports at the TRP can provide digital beamforming gain. Signal gain, at least in part based on the number of transmit ports at the TRP, can be achieved based at least in part on the cross-link signal and / or the number of transmit ports at the TRP, compared to a single CSI-RS resource at each TRP (e.g., based at least in part on the UE using a single transmit antenna port and / or a single transceiver antenna port for SRS transmission). M Each CSI-RS resource (e.g., at least in part based on UE usage) M One transmit antenna port and / or M Each transceiver antenna port performs SRS transmission. In some respects, each TRP pair...M The use of each CSI-RS resource may be based at least in part on: each CSI-RS resource may be based at least in part on (e.g., M The associated SRS port (one of the SRS ports) is used for pre-decoding so that the UE can compensate for channel delay and channel phase, as per the relevant information. Figure 6 , Figure 7 and Figure 8 As described. Each TRP uses M Each CSI-RS resource can increase CSI-RS resource overhead. Therefore, one or more TRPs can use mechanisms that reduce CSI-RS resource overhead relative to other mechanisms to instruct the UE on dynamic port selection (e.g., instructing a subset of CSI-RS resources and / or a subset of SRS ports). As an example, one or more TRPs can select and / or instruct links to be used for pre-decoding. N A subset of UE transmit antenna ports and / or transceiver antenna ports of a CSI-RS resource (e.g., configured as at least part of an SRS port), as described above. Alternatively or additionally, the TRP may indicate a subset of CSI-RS resources linked to a subset of SRS ports. The TRP may use CJT and / or use a single transmission (e.g., independent transmission) to indicate dynamic port selection. Using a subset of SRS ports and / or a subset of CSI-RS resources reduces the resource overhead of transmitting multiple CSI-RSs via multiple CSI-RS resources and / or TRPs.

[0169] An example of reduced resource overhead may include the use of DCI and / or code points. In some aspects, DCI may include one or more fields representing code points, and code points may indicate one or more parameters. For example, at a first time point, a network node (e.g., network node 110 and / or TRP) may send multiple code point configurations for TRP CJT synchronization in RRC signaling. For example, the code point configurations for TRP CJT synchronization may be associated with a subset of SRS ports configured for the UE and / or a subset of CSI-RS resources configured for the corresponding TRP. At a second time point, the network node may send a selection of a specific code point configuration in DCI (e.g., from multiple code point configurations for TRP CJT synchronization). For example, DCI may use an SRS request field and / or a CJT synchronization field to indicate this selection. DCI may be a unicast DCI for the UE.

[0170] In some aspects, network nodes may use unicast DCI to trigger and / or request CSI reports from the UE, and these CSI reports may be associated with and / or at least partially based on multiple CSI-RS resource sets (e.g., a first CSI-RS resource set associated with a first TRP and a second CSI-RS resource set associated with a second TRP). Each CSI-RS resource set may be at least partially based on the UE being configured with multiple SRS ports (e.g., M (sRS ports) to include multiple CSI-RS resources (e.g., 1 SRS port ... M One CSI-RS resource, of which M (greater than 1), and each CSI-RS resource can be linked to the corresponding SRS port as described above (e.g., at least in part based on pre-decoding). In some aspects, when triggering and / or requesting a CSI-RS report, the network node can use fields in the unicast DCI and / or code point to trigger the UE to generate a CSI-RS report using the corresponding subset of CSI-RS resources in each of the multiple CSI-RS resource sets.

[0171] As an example, each code point in the field of unicast DCI can indicate a subset of SRS ports (e.g., M 'SRS ports, of which M 'less than or equal to' M (Integers). Therefore, the various code point configurations sent in the RRC signaling can indicate multiple subsets and / or multiple combinations of subsets of SRS ports, and the fields in the unicast DCI can indicate the selection of a subset of SRS ports and / or a combination of multiple combinations of subsets of SRS ports from the multiple subsets of SRS ports. Based at least in part on the subset of SRS ports indicated in the unicast DCI, the UE can generate a CSI-RS report by measuring a subset of CSI-RS resources for each CSI-RS resource set in multiple CSI-RS resource sets, rather than all CSI-RS resources. That is, the UE will use each CSI-RS resource associated with the corresponding SRS port in the subset of SRS ports indicated by the unicast DCI to measure M Each TRP may not use CSI-RS resources in a subset not linked to an SRS port, and / or the UE may not receive and / or use signals on antenna ports not included in a subset of SRS ports.

[0172] As another example, each code point in the fields of unicast DCI can indicate and / or be mapped to a subset of CSI-RS resources (e.g., M 'Number of CSI-RS resources, among which M 'less than or equal to'M (Integers). Therefore, various code point configurations sent in the RRC signaling can indicate subsets of multiple CSI-RS resources and / or multiple combinations of subsets of CSI-RS resources, and fields in the unicast DCI can indicate the selection of a subset of CSI-RS resources and / or a combination of multiple combinations of subsets of CSI-RS resources. Based at least in part on the subset of CSI-RS resources indicated in the unicast DCI, the UE can generate a CSI-RS report by measuring a subset of CSI-RS resources for each CSI-RS resource set in multiple CSI-RS resource sets, rather than all CSI-RS resources. In some aspects, the UE may not receive and / or use unlinked to M The signal on the antenna port of a CSI-RS resource, and / or each TRP may not use CSI-RS resources not indicated in a subset of CSI-RS resources.

[0173] In some respects, regarding Figure 9A , Figure 9B , Figure 9C and Figure 9D The described first and / or second operating conditions may be used in conjunction with dynamic port selection. For dynamic port selection, each operating condition may be applied to a subset of SRS ports in each CSI-RS resource set (e.g., M A subset of SRS ports and / or CSI-RS resources (e.g., 1 SRS port) and / or CSI-RS resources M (One CSI-RS resource).

[0174] Figure 10A The first example 1000 shown includes a UE 1002 (e.g., UE 120), which may include at least four antenna ports. Figure 10A The antenna ports are shown as antenna port 1, antenna port 2, antenna port 3, and antenna port 4, which can be any combination of transmit ports, receive ports, and / or transceiver ports. In some aspects, and as indicated by reference numeral 1004, UE1002 can be configured to have four SRS ports (e.g., M =4), in Figure 10A The SRS ports are shown as SRS 1, SRS 2, SRS 3, and SRS 4. For simplicity, each SRS port indicated by reference numeral 1004 is configured to have a corresponding antenna port of the UE 120. For example, SRS 1 is configured to have antenna port 1 (each antenna port is shown with diagonal stripes), SRS 2 is configured to have antenna port 2 (each antenna port is shown with horizontal stripes), SRS 3 is configured to have antenna port 3 (each antenna port is shown with a dotted pattern), and SRS 4 is configured to have antenna port 4 (each antenna port is shown in plain white).

[0175] In some respects, UE 1002 can communicate with multiple TRPs, such as through CJT communication as described above. In Example 1000, UE 1002 communicates with four TRPs ( Figure 10A (Not shown in the image) communicates, and each TRP has been configured with a corresponding CSI-RS resource set: the first TRP is configured with the first CSI-RS resource set 1006-1, the second TRP is configured with the second CSI-RS resource set 1006-2, the third TRP is configured with the third CSI-RS resource set 1006-3, and the fourth TRP is configured with the fourth CSI-RS resource set 1006-4. Each CSI-RS resource set may include at least four CSI-RS resources (shown as circles within each CSI-RS resource set) based at least in part on the four SRS ports configured for UE 1002. For illustration, the first CSI-RS resource set 1006-1 includes CSI-RS resource 1008-1, the second CSI-RS resource set 1006-2 includes CSI-RS resource 1008-2, the third CSI-RS resource set 1006-3 includes CSI-RS resource 1008-3, and the fourth CSI-RS resource set 1006-4 includes CSI-RS resource 1008-4. Each CSI-RS resource in the respective CSI-RS resource set can be linked to the corresponding SRS port of UE 1002 as indicated by the illustration and using the same pattern. For example, CSI-RS resource 1008-1 in the first CSI-RS resource set 1006-1 can be linked to the third SRS port (e.g., SRS 3), as shown below. Figure 10A The dotted pattern used for each CSI-RS resource set indicates this, and CSI-RS resource 1008-4 in the fourth CSI-RS resource set 1006-4 can also be linked to the third SRS port (e.g., SRS 3), as shown. Figure 10A The dotted pattern used for each CSI-RS resource set is indicated in the diagram. Therefore, across... Figure 10A As shown, UE 1002 uses the same antenna port to receive the selected CSI-RS resource set.

[0176] In some aspects, network nodes (e.g., network node 110 and / or TRP) may instruct the generation of CSI-RS reports 1010 that are at least partially based on a subset of SRS ports. For example, a network node may instruct the selection of specific entries in code points, as indicated by reference numeral 1012. Thus, using an antenna port linked to the selected CSI-RS resource (e.g., via SRS transmission using the linked SRS port), each TRP may transmit a subset of the CSI-RS resource (in... Figure 10AThe subsets shown are 1014-1, 1014-2, 1014-3 and 1014-4, and / or the subsets of CSI-RS resources that UE 1002 can receive, as indicated by reference numeral 1016.

[0177] Figure 10B The second example 1050 shown includes UE 1002 (about Figure 10A (Description), and UE 1002 is configured with information about Figure 10A The four SRS ports are described. UE 1002 has four TRPs ( Figure 10B (not shown in the image) communicates, and each TRP has been configured with M Each corresponding CSI-RS resource set may include at least four CSI-RS resources, such as CSI-RS resource 1008-1 in the first CSI-RS resource set 1006-1, CSI-RS resource 1008-2 in the second CSI-RS resource set 1006-2, CSI-RS resource 1008-3 in the third CSI-RS resource set 1006-3, and CSI-RS resource 1008-4 in the fourth CSI-RS resource set 1006-4. Each CSI-RS resource in the corresponding CSI-RS resource set may be linked to the corresponding SRS port of UE 1002 as indicated by the legend and using the same pattern.

[0178] In the second example 1050, a network node may instruct the generation of a second CSI-RS report 1052, which is at least partially based on a different subset of the SRS ports relative to the first CSI-RS report 1010. For example, the network node may instruct the selection of specific entries in the code points, as indicated by reference numeral 1054. Thus, using an antenna port linked to the selected CSI-RS resource (e.g., via SRS transmission using the linked SRS port), each TRP may transmit a subset of the CSI-RS resource (in... Figure 10B The subsets shown are 1054-1, 1054-2, 1054-3 and 1054-4 and / or subsets of CSI-RS resources that UE1002 can receive, as indicated by reference numeral 1056.

[0179] As indicated above, Figure 10A and Figure 10B This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 10A and Figure 10B The examples described are different.

[0180] Figure 11This is a diagram illustrating an example 1100 of a wireless communication process between a UE 1102 (e.g., UE 120), a first network node 1104 (e.g., first network node 110 and / or first TRP), and a second network node 1106 (e.g., second network node 110 and / or second TRP) according to this disclosure.

[0181] As shown by reference numeral 1110 in the attached figure, the first network node 1104 and the second network node 1106 can establish a connection with the UE 1102. In some aspects, the first network node 1104 and the second network node 1106 can establish a connection with the UE 1102 at least in part based on the CJT between the first network node 1104 and the second network node 1106.

[0182] In some aspects, UE 1102 can be powered on in a cell coverage area jointly provided by a first network node 1104 and a second network node 1106 (e.g., via CJT), and UE 1102, the first network node 1104, and the second network node 1106 can perform one or more procedures (e.g., a Random Access Channel (RACH) procedure and / or an RRC procedure) to establish a radio connection. As another example, UE 1102 can move to a cell coverage area jointly provided by the first network node 1104 and the second network node 1106, and can perform a handover from a source network node (e.g., another network node 110) to at least one of the first network node 1104 and the second network node 1106. Alternatively or additionally, the first network node 1104 and the second network node 1106 may communicate with the UE 1102 via the connection based at least in part on any combination of Layer 1 signaling (e.g., DCI and / or UCI), Layer 2 signaling (e.g., MAC CE), and / or Layer 3 signaling (e.g., RRC signaling). For example, the first network node 1104 and the second network node 1106 may request UE capability information via RRC signaling, and / or the UE 1102 may send the UE capability information via RRC signaling. As part of communication via the connection, the first network node 1104 and the second network node 1106 may send configuration information via Layer 3 signaling (e.g., RRC signaling) and activate and / or deactivate specific configurations via Layer 2 signaling (e.g., MAC CE) and / or Layer 1 signaling (e.g., DCI). For illustration, the first network node 1104 and the second network node 1106 may send configuration information via Layer 3 signaling at a first time point associated with the UE 1102's tolerance for communication delay, and the first network node 1104 and the second network node 1106 may send activation of the configuration via Layer 2 signaling and / or Layer 1 signaling at a second time point associated with the UE 1102's intolerance for communication delay.

[0183] As shown by reference numeral 1120 in the attached figure, the first network node 1104 and / or the second network node 1106 can send configuration information, and the UE 1102 can receive the configuration information. For clarity, Figure 11 The example illustrates that the first network node 1104 and the second network node 1106 send configuration information separately from establishing a connection with the UE 1102. However, in other examples, the first network node 1104 and the second network node 1106 may send configuration as part of establishing a connection as described above. The first network node 1104 and / or the second network node 1106 may indicate configuration information in any combination of Layer 1 signaling, Layer 2 signaling, and / or Layer 3 signaling.

[0184] In some aspects, configuration information can indicate SRS port configuration information. For example, UE 1102 may include multiple antenna ports, such as those related to... Figure 9A , Figure 9B , Figure 9C and Figure 9D The description includes one or more transmit antenna ports, one or more receive antenna ports, and / or any combination of one or more transceiver antenna ports, and the configuration information may indicate the use of multiple antenna ports at UE 1102. M SRS port information for each SRS port.

[0185] Alternatively or additionally, configuration information may indicate one or more CSI-RS resource sets (e.g., as per [reference to...]). Figure 10A and Figure 10B Description N Each CSI-RS resource set may be configured at least in part based on UE 1102, such as a first CSI-RS resource set associated with the first network node 1104 and / or a second CSI-RS resource set associated with the second network node 1106. M Several SRS ports to include, for example, regarding Figure 10A and Figure 10B The described at least M One CSI-RS resource. In some respects, M Each corresponding antenna port in the SRS ports is linked to N Each corresponding CSI-RS resource set in the CSI-RS resource set M In CSI-RS resources M Each corresponding CSI-RS resource.

[0186] In some respects, configuration information can indicate MOne or more potential subsets of SRS antenna ports in an SRS port, such as multiple combinations of subsets of SRS antenna ports that can be indicated by code points as described above. Alternatively or additionally, configuration information may specify one or more potential subsets of a corresponding CSI-RS resource in each corresponding CSI-RS resource set.

[0187] As indicated by reference numeral 1130 in the accompanying drawings, the first network node 1104 and / or the second network node 1106 may send a CSI report request, and the UE 1102 may receive the CSI report request. In some aspects, the first network node 1104 and the second network node 1106 may use a CJT to send the request. Alternatively or additionally, the first network node 1104 and / or the second network node 1106 may send an instruction to send a CSI report, which is at least partially based on the CSI-RS resource set. M A corresponding subset of CSI-RS resources in a given CSI-RS resource. The first network node 1104 and / or the second network node 1106 may indicate the corresponding subset of CSI-RS resources in the unicast DCI field, as per [reference to...]. Figure 10A and Figure 10B As described, selection of code point entries can be indicated, for example, by specifying the selection of code point entries. As an example, selection of code point entries can indicate the selection of a specific subset of SRS antenna ports from one or more potential subsets of SRS antenna ports indicated by configuration information. As another example, selection of code point entries can indicate the selection of a specific subset of corresponding CSI-RS resources from one or more potential subsets of corresponding CSI-RS resources indicated by configuration information. As described above, each CSI-RS resource in a specific subset of a corresponding CSI-RS resource within each corresponding CSI-RS resource set can be linked to... M The corresponding antenna port in each SRS port. Therefore, the indication of a subset of SRS ports can implicitly indicate the selection of (linked) CSI-RS resources, and / or the indication of a subset of CSI-RS resources can implicitly indicate the selection of (linked) SRS ports.

[0188] As shown by reference numeral 1140 in the attached figure, UE 1102 can use M M SRS ports are used to transmit one or more SRS signals, and the first network node 1104 and / or the second network node 1106 can use M SRS ports to receive one or more SRS signals, which are configured from multiple antenna ports, as described above with respect to reference numeral 1120. As an example, and as described above with respect to... Figure 10A and Figure 10B As described, MAn SRS port may include a first antenna port and a second antenna port among a plurality of antenna ports, and UE 1102 may use the first antenna port and the second antenna port to transmit SRS. Alternatively or additionally, a third antenna port and / or a fourth antenna port may not be included. M Of the SRS ports, UE1102 may transmit SRS without using the third and / or fourth antenna ports. Alternatively, as described above, UE1102 may, at least in part, transmit SRS based on an indication received in the unicast DCI for selecting a specific subset of SRS antenna ports. M Each SRS port transmits a subset of the SRS antenna ports.

[0189] As shown by reference numeral 1150 in the attached figure, the first network node 1104 and / or the second network node 1106 can transmit one or more CSI-RS, and the UE 1102 can receive one or more CSI-RS. As an example, this can be at least partially based on the UE 1102 being configured with... M Each network node is assigned an SRS port, including M The corresponding CSI-RS resource set for each CSI-RS resource. Therefore, the first network node 1104 and / or the second network node 1106 can use the corresponding CSI-RS resource set. M One CSI-RS resource is used to send the corresponding CSI-RS. In other respects, the first network node 1104 and / or the second network node 1106 may use a subset of CSI-RS resources (such as a subset of CSI-RS resources indicated via unicast DCI) to send the corresponding CSI-RS.

[0190] UE 1102 can use each corresponding CSI-RS resource set associated with the first network node 1104 and the second network node 1106 (e.g., N UE 1102 may use a corresponding subset of the CSI-RS resources in each corresponding CSI-RS resource set to receive each corresponding CSI-RS. Alternatively, UE 1102 may use a corresponding subset of the CSI-RS resources in each corresponding CSI-RS resource set to receive each corresponding CSI-RS, as per the relevant information. Figure 10A and Figure 10B As described. In some respects, UE 1102 may receive CSI-RS at least in part based on one or more operating conditions, such as one or more operating conditions that may be specified by the communication standard.

[0191] The first example operating condition may include an operating condition that specifies the use of at least the same set of antenna ports to utilize the first CSI-RS resource set. MOne corresponding CSI-RS resource to receive at least the first CSI-RS (and / or use a subset of the CSI-RS resources in the first CSI-RS resource set to receive a portion of the first CSI-RS) and use the second CSI-RS resource set. M A corresponding CSI-RS resource is used to receive the second CSI-RS among multiple CSI-RS (and / or a subset of CSI-RS resources in the second CSI-RS resource set is used to receive a portion of the second CSI-RS). In some aspects, the first operating condition may alternatively or additionally specify not to use different sets of antenna ports among multiple antenna ports to receive the first CSI-RS resource set and the second CSI-RS resource set, such as regarding Figure 9D As described.

[0192] The second example operation condition may include an operation condition that specifies at least in part based on M Each SRS port is connected to a corresponding CSI-RS resource set. M In CSI-RS resources M Links between corresponding CSI-RS resources are used to access resources included in the transmission of one or more SRSs. M Each antenna port in each of the SRS ports (and / or from) M A subset of SRS ports (of the SRS ports) receives data from each corresponding CSI-RS resource set (and / or a corresponding subset of CSI-RS resources within each corresponding CSI-RS resource set). M Each corresponding CSI-RS resource.

[0193] As described above, the corresponding portion of CSI-RS (e.g., a portion carried by the corresponding CSI-RS resource) may be at least partially based on via M The corresponding SRS sent by the corresponding SRS port in each SRS port is used for pre-decoding. Therefore, M Each corresponding antenna port in the SRS ports can be linked to N Each corresponding CSI-RS resource set in the CSI-RS resource set M The corresponding CSI-RS resource in a CSI-RS resource, and the corresponding portion of the CSI-RS carried by the corresponding CSI-RS resource can be pre-decoded at least in part based on the corresponding SRS sent via the corresponding (linked) SRS port.

[0194] As shown by reference numeral 1160, UE 1102 can calculate phase offset and / or timing offset. For illustration, UE 1102 can calculate, at least in part, based on satisfying a first operating condition and / or a second operating condition as described with respect to reference numeral 1150. Figure 6, Figure 7 and Figure 8 The described inter-TRP phase offset and / or inter-TRP timing offset. In some aspects, as part of calculating the phase offset and / or timing offset, UE 1102 may not use data transmitted via methods not included in the calculation. M A portion of the CSI-RS received by one or more antennas in one of the SRS ports.

[0195] As indicated by reference numeral 1170, UE 1102 may send an indication of phase offset and / or timing offset, and at least one of the first network node 1104 or the second network node 1106 may receive the indication of phase offset and / or timing offset. As an example, UE 1102 may send a CSI-RS report requested by the first network node 1104 and / or the second network node 1106, as described with respect to reference numeral 1130, and the CSI-RS report may indicate phase offset and / or timing offset. UE 1102 may send this indication in one or more of Layer 1 signaling, Layer 2 signaling, or Layer 3 signaling.

[0196] As indicated by reference numeral 1180 in the accompanying drawings, the second network node 1106 may use at least one of a phase offset or a timing offset to synchronize with the first network node 1104. For example, the second network node 1106 may adjust downlink transmissions to reduce the timing offset from downlink transmissions performed by the first network node 1104 and / or reduce the phase offset with it.

[0197] Using one or more operating conditions specifying allowed and / or disallowed antenna ports for receiving pre-decoded CSI-RS enables a UE (e.g., UE 120) to eliminate cross-link signals and / or Tx-Rx mismatches, and improves the accuracy of inter-TRP phase offset estimation and / or inter-TRP timing estimation, as described above. That is, these operating conditions ensure that the UE receives pre-decoded CSI-RS resources belonging to different CSI-RS resource sets but associated with the same SRS port using the same antenna port, thereby enabling the UE to eliminate cross-link signals in calculations associated with estimating inter-TRP phase offset and / or inter-TRP timing. Improving the accuracy of inter-TRP phase offset estimation and / or inter-TRP timing offset estimation improves synchronization in the CJT between TRPs (e.g., reducing timing offset and / or reducing phase offset), resulting in improved signal quality at the UE (e.g., signal power levels meeting high power thresholds), reduced data recovery errors, increased data throughput, and / or reduced data transmission latency.

[0198] As pointed out above, Figure 11 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 11 The examples described are different.

[0199] Figure 12 This is a diagram illustrating an example process 1200 performed, for example, at a UE or a device of a UE, according to this disclosure. Example process 1200 is an example in which a device or UE (e.g., UE 120) performs operations associated with dynamic port selection for time and phase synchronization of CJT.

[0200] like Figure 12 As shown, in some aspects, process 1200 may include: using configurations from multiple antenna ports M One SRS port is used to send one or more SRS messages. M For example, the UE (e.g., using...) Figure 14 The transmitting component 1404 and / or communication manager 1406 depicted can be configured from multiple antenna ports. M One SRS port is used to send one or more SRS messages. M It is the first integer, as described above.

[0201] like Figure 12 As further shown, in some aspects, process 1200 may include: from N Each CSI-RS resource set receives multiple CSI-RS. N The second integer, N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, the reception being based at least in part on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from a plurality of antenna ports for use. N The first CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among multiple CSI-RSs and use N The second CSI-RS resource set in the first CSI-RS resource set. M A corresponding CSI-RS resource to receive a second CSI-RS among multiple CSI-RSs; or a second operating condition specifying the use of a resource included in the method for transmitting one or more SRSs. M Each antenna port in the SRS ports is used to receive... N Each corresponding CSI-RS resource set in the CSI-RS resource set M Each corresponding CSI-RS resource is included. M Each antenna port in the SRS ports is linked to N CSI-RS resource set MEach corresponding CSI-RS resource (box 1220). For example, the UE (e.g., using...) Figure 14 The receiving component 1402 and / or communication manager 1406 depicted in the image can be obtained from... N Each CSI-RS resource set receives multiple CSI-RS. N The second integer, N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, the reception being based at least in part on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from a plurality of antenna ports for use. N The first CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among multiple CSI-RSs and use N The second CSI-RS resource set in the first CSI-RS resource set. M A corresponding CSI-RS resource to receive a second CSI-RS among multiple CSI-RSs; or a second operating condition specifying the use of a resource included in the method for transmitting one or more SRSs. M Each antenna port in the SRS ports is used to receive... N Each corresponding CSI-RS resource set in the CSI-RS resource set M Each corresponding CSI-RS resource is included. M Each antenna port in the SRS ports is linked to N CSI-RS resource set M The corresponding CSI-RS resources are as described above.

[0202] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere in this document.

[0203] In the first aspect, receiving N The CSI-RS resource set is based at least in part on the first operating condition, and the first operating condition further specifies that the different sets of antenna ports among the multiple antenna ports are not used to receive the first CSI-RS resource set and the second CSI-RS resource set.

[0204] Secondly, M Each corresponding antenna port in the SRS ports is linked to N In each of the A CSI-RS resources in a given CSI-RS resource set within a given CSI-RS resource set MEach corresponding CSI-RS resource, and the corresponding portion of the CSI-RS carried by the corresponding CSI-RS resource is pre-decoded at least in part based on the corresponding SRS sent via the corresponding SRS port in one or more SRSs.

[0205] In a third aspect, receiving multiple CSI-RS includes: receiving a first CSI-RS using a first CSI-RS resource set at least in part based on at least one of a first operating condition or a second operating condition, and receiving a second CSI-RS using a second CSI-RS resource set, and process 1200 includes: calculating a time offset and a phase offset between a first TRP and a second TRP using the following: the first CSI-RS received using the first CSI-RS resource set, the second CSI-RS received using the second CSI-RS resource set, and the CSI-RS linked to the first CSI-RS. M One SRS port and a link to a second CSI-RS M Each SRS port, and sends indications of time offset and phase offset to at least one of the first TRP or the second TRP.

[0206] In the fourth aspect, use M Using one SRS port to transmit one or more SRS includes: using a first antenna port and a second antenna port from a plurality of antenna ports to transmit one or more SRS, wherein the first antenna port and the second antenna port are included. M Of the SRS ports, the first CSI-RS resource set and the second CSI-RS resource set are linked to M One SRS port, and receive N A CSI-RS resource set includes: using a first antenna port, a second antenna port, and at least a third antenna port from a plurality of antenna ports to receive first and second CSI-RS, wherein the third antenna port is not included in the set for transmitting one or more SRS. M In one SRS port, and process 1200 includes: calculating the time offset and phase offset between the first TRP and the second TRP without using a portion of the first CSI-RS and a portion of the second CSI-RS received via the third antenna port.

[0207] In the fifth aspect, N CSI-RS resource set of CSI-RS resource set M Each corresponding CSI-RS resource in the corresponding CSI-RS resource is linked to the resource included in the CSI-RS resource list. M The corresponding antenna port in each SRS port, and process 1200 includes: receiving an indication to transmit a CSI report, the CSI report being at least partially based on the CSI-RS resource set. MA corresponding subset of CSI-RS resources in a given CSI-RS resource.

[0208] In the sixth aspect, receiving the instruction includes receiving the instruction in the unicast DCI field.

[0209] In the seventh aspect, process 1200 includes: receiving a specified [field] before the unicast DCI field. M The configuration of one or more potential subsets of SRS antenna ports in an SRS port, the unicast DCI field indicating a specific subset of SRS antenna ports from one or more potential subsets of SRS antenna ports; and the generation of a CSI report using each of one or more corresponding CSI-RS resources in the corresponding CSI-RS resource set linked to the specific subset of SRS antenna ports as a corresponding subset of CSI-RS resources.

[0210] In the eighth aspect, process 1200 includes: receiving, prior to a unicast DCI field, a configuration specifying one or more potential subsets of corresponding CSI-RS resources in each corresponding CSI-RS resource set, the unicast DCI field indicating a specific subset of corresponding CSI-RS resources from one or more potential subsets of corresponding CSI-RS resources; and generating a CSI report using each CSI-RS resource in the specific subset of corresponding CSI-RS resources in the corresponding CSI-RS resource set as a corresponding subset of CSI-RS resources.

[0211] In the ninth aspect, each CSI-RS resource in a specific subset of the corresponding CSI-RS resources in each corresponding CSI-RS resource set is linked to... M The corresponding antenna port in each SRS port.

[0212] In the tenth aspect, the unicast DCI field indicates the selection of code point entries.

[0213] In the eleventh aspect, multiple antenna ports include any combination of the following: one or more transmit antenna ports, one or more receive antenna ports, or one or more transceiver antenna ports.

[0214] although Figure 12 An example box of process 1200 is shown, but in some respects, process 1200 may include... Figure 12 The boxes depicted in the text are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Additionally or alternatively, two or more boxes in the process 1200 may be executed in parallel.

[0215] Figure 13This is a diagram illustrating an example process 1300 performed, for example, at a first TRP or a device of the first TRP, according to this disclosure. Example process 1300 is an example in which a device or a first TRP (e.g., a first network node 110 and / or a first device 1500) performs operations associated with dynamic port selection for time and phase synchronization of CJT.

[0216] like Figure 13 As shown, in some aspects, process 1300 may include receiving SRS from the UE (block 1310). For example, the first TRP (e.g., using...) Figure 15 The receiving component 1502 and / or communication manager 1506 depicted herein can receive SRS from the UE, as described above.

[0217] like Figure 13 Further shown, in some aspects, process 1300 may include: transmitting a CSI-RS at least partially based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least partially based on SRS (box 1320). For example, a first TRP (e.g., using...) Figure 15 The transmitting component 1504 and / or the communication manager 1506 depicted herein can transmit CSI-RS at least in part based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least in part based on SRS, as described above.

[0218] like Figure 13 As further shown, in some aspects, process 1300 may include: receiving indications of time offset and phase offset between a first TRP and a second TRP (box 1330). For example, the first TRP (e.g., using...) Figure 15 The receiving component 1502 and / or communication manager 1506 depicted herein can receive indications of time offset and phase offset between the first TRP and the second TRP, as described above.

[0219] Process 1300 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere in this document.

[0220] In the first aspect, the instruction is a first instruction, and process 1300 includes: sending a second instruction to send a CSI report, the CSI report being based at least in part on a subset of one or more CSI-RS resources.

[0221] In the second aspect, receiving the instruction includes sending the instruction in the unicast DCI field.

[0222] In a third aspect, process 1300 includes: sending a configuration specifying one or more potential subsets of SRS antenna ports among a plurality of SRS antenna ports configured at the UE before the unicast DCI field, and the unicast DCI field indicating a specific subset of SRS antenna ports from one or more potential subsets of SRS antenna ports.

[0223] In the fourth aspect, process 1300 includes: sending a configuration of one or more potential subsets of CSI-RS resources in a specified CSI-RS resource set before the unicast DCI field, wherein the unicast DCI field indicates a specific subset of CSI-RS resources from one or more potential subsets of CSI-RS resources.

[0224] In the fifth aspect, each CSI-RS resource in a specific subset of the CSI-RS resources is linked to a corresponding antenna port among multiple SRS antenna ports at the UE.

[0225] In the sixth aspect, the unicast DCI field indicates the selection of code point entries.

[0226] although Figure 13 An example box of process 1300 is shown, but in some respects, process 1300 may include... Figure 13 The boxes depicted in the text are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Additionally or alternatively, two or more boxes in the process 1300 may be executed in parallel.

[0227] Figure 14 This is a diagram of an example device 1400 for wireless communication according to the present disclosure. Device 1400 may be a UE, or a UE may include device 1400. In some aspects, device 1400 includes a receiving component 1402, a transmitting component 1404, and / or a communication manager 1406 that can communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1406 is combined with... Figure 1 The described communication manager 140. As shown, device 1400 can communicate with another device 1408 (such as a UE or a network node (such as a CU, DU, RU or base station)) using receiving component 1402 and transmitting component 1404.

[0228] In some respects, device 1400 can be configured to perform the functions described herein. Figures 6 to 11 One or more operations as described herein. Additionally or alternatively, the apparatus 1400 may be configured to perform one or more processes described herein (such as...). Figure 12 The process 1200) or a combination thereof. In some respects, Figure 14 The illustrated device 1400 and / or one or more components may include a combination Figure 2 One or more components of the described UE. Additionally or alternatively, Figure 14 One or more components shown can be combined Figure 2 Implementation within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in one or more memories. For example, a component (or a portion thereof) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by one or more controllers or one or more processors to perform the function or operation of the component.

[0229] Receiver 1402 may receive communications from device 1408, such as reference signals, control information, data communications, or combinations thereof. Receiver 1402 may provide the received communications to one or more other components of device 1400. In some aspects, receiver 1402 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications, and may provide the processed signals to the one or more other components of device 1400. In some aspects, receiver 1402 may include combinations of... Figure 2 The described UE includes one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receiver processors, one or more controllers / processors, one or more memories, or combinations thereof.

[0230] Transmitting component 1404 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1408. In some aspects, one or more other components of device 1400 may generate communications and provide the generated communications to transmitting component 1404 for transmission to device 1408. In some aspects, transmitting component 1404 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1408. In some aspects, transmitting component 1404 may include combinations of... Figure 2 The described UE may include one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers / processors, one or more memories, or combinations thereof. In some aspects, the transmit component 1404 may co-located with the receive component 1402 in one or more transceivers.

[0231] The communication manager 1406 may support the operation of the receiving component 1402 and / or the transmitting component 1404. For example, the communication manager 1406 may receive information associated with configuring the reception of communications by the receiving component 1402 and / or the transmission of communications by the transmitting component 1404. Additionally or alternatively, the communication manager 1406 may generate control information and / or provide control information to the receiving component 1402 and / or the transmitting component 1404 to control the reception and / or transmission of communications.

[0232] Transmitter component 1404 can be configured from multiple antenna ports. M One SRS port is used to send one or more SRS messages. M The first integer. Receiver component 1402 can receive from... N Each CSI-RS resource set receives multiple CSI-RS. N The second integer, N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, the reception being based at least in part on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from a plurality of antenna ports for use. N The first CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive at least the first CSI-RS among multiple CSI-RSs and use N The second CSI-RS resource set in the first CSI-RS resource set. M A corresponding CSI-RS resource to receive a second CSI-RS among multiple CSI-RSs; or a second operating condition specifying the use of a resource included in the method for transmitting one or more SRSs. M Each antenna port in the SRS ports is used to receive... N Each corresponding CSI-RS resource set in the CSI-RS resource set M Each corresponding CSI-RS resource is included. M Each antenna port in the SRS ports is linked to N CSI-RS resource set M Each corresponding CSI-RS resource.

[0233] Receiver component 1402 can receive specified data before the unicast DCI field. MThe configuration of one or more potential subsets of SRS antenna ports in an SRS port, and the unicast DCI field indicates a specific subset of SRS antenna ports from one or more potential subsets of SRS antenna ports. Alternatively or additionally, the communication manager 1406 may use each of one or more corresponding CSI-RS resources in the corresponding CSI-RS resource set linked to the specific subset of SRS antenna ports as a corresponding subset of CSI-RS resources to generate a CSI report.

[0234] The receiving component 1402 may receive a configuration specifying one or more potential subsets of corresponding CSI-RS resources in each corresponding CSI-RS resource set before the unicast DCI field, and the unicast DCI field indicates a specific subset of corresponding CSI-RS resources from one or more potential subsets of corresponding CSI-RS resources. Alternatively or additionally, the communication manager 1406 may use each CSI-RS resource in a specific subset of corresponding CSI-RS resources in the corresponding CSI-RS resource set as a corresponding subset of CSI-RS resources to generate a CSI report.

[0235] Figure 14 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 14 The components shown are compared to additional components, fewer components, different components, or components arranged in a different manner. Furthermore, Figure 14 The two or more components shown can be implemented within a single component, or Figure 14 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 14 The executable description of the collection of (one or more) components shown is composed of Figure 14 Another set of components shown performs one or more functions.

[0236] Figure 15 This is a diagram of an example device 1500 for wireless communication according to the present disclosure. Device 1500 may be a TRP, or a TRP may include device 1500. In some aspects, device 1500 includes a receiving component 1502, a transmitting component 1504, and / or a communication manager 1506 that can communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, the communication manager 1506 is combined with... Figure 1 The described communication manager 150. As shown, device 1500 can communicate with another device 1508 (such as a UE or a network node (such as a CU, DU, RU or base station)) using receiving component 1502 and transmitting component 1504.

[0237] In some respects, device 1500 can be configured to perform the functions described herein. Figures 6 to 11 One or more operations as described herein. Additionally or alternatively, the apparatus 1500 may be configured to perform one or more processes described herein (such as...). Figure 13 The process 1300) or a combination thereof. In some respects, Figure 15 The illustrated device 1500 and / or one or more components may include a combination Figure 2 One or more components of the described TRP. Additionally or alternatively, Figure 15 One or more components shown can be combined Figure 2 Implementation within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in one or more memories. For example, a component (or a portion thereof) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by one or more controllers or one or more processors to perform the function or operation of the component.

[0238] Receiver 1502 may receive communications from device 1508, such as reference signals, control information, data communications, or combinations thereof. Receiver 1502 may provide the received communications to one or more other components of device 1500. In some aspects, receiver 1502 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications, and may provide the processed signals to the one or more other components of device 1500. In some aspects, receiver 1502 may include combinations of... Figure 2 The described TRP includes one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receiver processors, one or more controllers / processors, one or more memories, or combinations thereof. In some aspects, receiver component 1502 and / or transmitter component 1504 may include or be included in a network interface. The network interface may be configured to acquire and / or output signals for device 1500 via one or more communication links, such as backhaul links, midhaul links, and / or fronthaul links.

[0239] Transmitting component 1504 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1508. In some aspects, one or more other components of device 1500 may generate communications and provide the generated communications to transmitting component 1504 for transmission to device 1508. In some aspects, transmitting component 1504 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1508. In some aspects, transmitting component 1504 may include combinations of... Figure 2 The described TRP includes one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers / processors, one or more memories, or combinations thereof. In some aspects, the transmit component 1504 may co-located with the receive component 1502 in one or more transceivers.

[0240] The communication manager 1506 may support the operation of the receiving component 1502 and / or the transmitting component 1504. For example, the communication manager 1506 may receive information associated with configuring the reception of communications by the receiving component 1502 and / or the transmission of communications by the transmitting component 1504. Additionally or alternatively, the communication manager 1506 may generate control information and / or provide control information to the receiving component 1502 and / or the transmitting component 1504 to control the reception and / or transmission of communications.

[0241] The receiving component 1502 can receive SRS from the UE. The transmitting component 1504 can transmit CSI-RS at least partially based on a set of CSI-RS resources including one or more CSI-RS resources, the CSI-RS including pre-decoding at least partially based on SRS. The receiving component 1502 can receive indications of time offset and phase offset between a first TRP and a second TRP.

[0242] In some aspects, the transmitting component 1504 may transmit a configuration specifying one or more potential subsets of SRS antenna ports among a plurality of SRS antenna ports configured at the UE, prior to the unicast DCI field, and the unicast DCI field indicates a specific subset of SRS antenna ports from one or more potential subsets of SRS antenna ports. In other aspects, the transmitting component 1504 may transmit a configuration specifying one or more potential subsets of CSI-RS resources in a CSI-RS resource set prior to the unicast DCI field, and the unicast DCI field indicates a specific subset of CSI-RS resources from one or more potential subsets of CSI-RS resources.

[0243] Figure 15The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 15 The components shown are compared to additional components, fewer components, different components, or components arranged in a different manner. Furthermore, Figure 15 The two or more components shown can be implemented within a single component, or Figure 15 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 15 The executable description of the collection of (one or more) components shown is composed of Figure 15 Another set of components shown performs one or more functions.

[0244] The following provides an overview of some aspects of this disclosure: Aspect 1: A method for wireless communication performed by a user equipment (UE), the method comprising: using a configuration from a plurality of antenna ports M Each probe reference signal (SRS) port is used to send one or more SRS signals. M The first integer; and from N Each Channel State Information Reference Signal (CSI-RS) resource set receives multiple CSI-RS. N The second integer, the N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M Each corresponding CSI-RS resource, the reception being based at least in part on at least one of the following: a first operating condition specifying the use of the same set of at least one antenna port from the plurality of antenna ports for the use of the [resource name missing]. N The first CSI-RS resource set in the CSI-RS resource set M Each corresponding CSI-RS resource is used to receive at least the first CSI-RS among the plurality of CSI-RSs and to use the N The second CSI-RS resource set in the CSI-RS resource set M A corresponding CSI-RS resource is used to receive a second CSI-RS among the plurality of CSI-RSs; or a second operating condition is specified to use the resource included in the method for transmitting the one or more SRSs. M Each of the SRS ports, via an antenna port, receives the... N The respective CSI-RS resource set in each of the CSI-RS resource sets M Each corresponding CSI-RS resource is included in the M Each antenna port in the SRS ports is linked to the N CSI-RS resource set M Each corresponding CSI-RS resource.

[0245] Aspect 2: According to the method of aspect 1, wherein the receiving of the N The CSI-RS resource set is at least partially based on the first operating condition, and the first operating condition further specifies that different sets of antenna ports among the plurality of antenna ports are not used to receive the first CSI-RS resource set and the second CSI-RS resource set.

[0246] Aspect 3: The method according to any one of aspects 1 to 2, wherein... M Each corresponding antenna port in the SRS ports is linked to the N In each of the A CSI-RS resources in a given CSI-RS resource set within a given CSI-RS resource set M A corresponding CSI-RS resource, wherein a corresponding portion of the CSI-RS carried by the corresponding CSI-RS resource is pre-decoded at least in part based on the corresponding SRS transmitted via the corresponding SRS port in one or more SRSs.

[0247] Aspect 4: The method according to any one of Aspects 1 to 3, wherein receiving the plurality of CSI-RS further comprises: receiving the first CSI-RS using the first CSI-RS resource set at least in part based on at least one of the first operating conditions or the second operating conditions, and receiving the second CSI-RS using the second CSI-RS resource set, and wherein the method further comprises: calculating the time offset and phase offset between the first transmit / receive point (TRP) and the second TRP using the following: the first CSI-RS received using the first CSI-RS resource set, the second CSI-RS received using the second CSI-RS resource set, and the CSI-RS linked to the first CSI-RS. M The SRS ports and the links to the second CSI-RS M One SRS port; and sending indications of the time offset and the phase offset to at least one of the first TRP or the second TRP.

[0248] Aspect 5: The method according to any one of aspects 1 to 4, wherein the method described above is used M Transmitting the one or more SRS using an SRS port comprises: using a first antenna port and a second antenna port among the plurality of antenna ports to transmit the one or more SRS, wherein the first antenna port and the second antenna port are included in the plurality of antenna ports. M In each SRS port, the first CSI-RS resource set and the second CSI-RS resource set are linked to the MOne SRS port, which receives the N The CSI-RS resource set also includes: receiving the first CSI-RS and the second CSI-RS using the first antenna port, the second antenna port, and at least the third antenna port of the plurality of antenna ports, wherein the third antenna port is not included in the set for transmitting the one or more SRSs. M In one SRS port, and wherein the method further includes: calculating the time offset and phase offset between the first TRP and the second TRP without using a portion of the first CSI-RS and a portion of the second CSI-RS received via the third antenna port.

[0249] Aspect 6: The method according to any one of aspects 1 to 5, wherein... N The CSI-RS resource set in the CSI-RS resource set M Each of the corresponding CSI-RS resources in the corresponding CSI-RS resources is linked to the resource included in the above. M The method further includes: receiving an indication to transmit a CSI report, the CSI report being at least partially based on the CSI-RS resource set of the corresponding antenna ports in the SRS port set. M A corresponding subset of CSI-RS resources in a given CSI-RS resource.

[0250] Aspect 7: According to the method of aspect 6, receiving the indication includes: receiving the indication in a unicast downlink control information (DCI) field.

[0251] Aspect 8: According to the method of aspect 7, the method further includes: receiving a specified unicast DCI field before the unicast DCI field. M The configuration of one or more potential subsets of SRS antenna ports in an SRS port, wherein the unicast DCI field indicates a specific subset of SRS antenna ports from the one or more potential subsets of SRS antenna ports; and the generation of the CSI report using each of the one or more corresponding CSI-RS resources in the corresponding CSI-RS resource set linked to the specific subset of SRS antenna ports as the corresponding subset of CSI-RS resources.

[0252] Aspect 9: The method according to aspect 7, further comprising: receiving, prior to the unicast DCI field, a configuration specifying one or more potential subsets of corresponding CSI-RS resources in each corresponding CSI-RS resource set, wherein the unicast DCI field indicates a specific subset of corresponding CSI-RS resources from the one or more potential subsets of corresponding CSI-RS resources; and generating the CSI report using each CSI-RS resource in the specific subset of the corresponding CSI-RS resources in the corresponding CSI-RS resource set as the specific subset of CSI-RS resources.

[0253] Aspect 10: The method according to aspect 9, wherein each CSI-RS resource in the specific subset of the corresponding CSI-RS resource in each corresponding CSI-RS resource set is linked to the M The corresponding antenna port in each SRS port.

[0254] Aspect 11: The method according to any one of Aspects 7 to 10, wherein the unicast DCI field indicates the selection of code point entries.

[0255] Aspect 12: The method according to any one of Aspects 1 to 11, wherein the plurality of antenna ports comprises any combination of: one or more transmit antenna ports, one or more receive antenna ports, or one or more transceiver antenna ports.

[0256] Aspect 13: A method of wireless communication performed by a first transmit-receive point (TRP), the method comprising: receiving a sounding reference signal (SRS) from a user equipment (UE); transmitting a CSI-RS at least in part based on a set of CSI-RS resources including one or more channel state information reference signal (CSI-RS) resources, the CSI-RS including pre-decoding at least in part based on the SRS; and receiving an indication of a time offset and a phase offset between the first TRP and a second TRP.

[0257] Aspect 14: The method according to aspect 13, wherein the instruction is a first instruction, and wherein the method further comprises: sending a second instruction for sending a CSI report, the CSI report being at least in part based on a subset of the CSI-RS resources of the one or more CSI-RS resources.

[0258] Aspect 15: According to the method of aspect 14, receiving the indication includes: sending the indication in a unicast downlink control information (DCI) field.

[0259] Aspect 16: The method according to aspect 15, the method further comprising: transmitting, prior to the unicast DCI field, a configuration specifying one or more potential subsets of SRS antenna ports among a plurality of SRS antenna ports configured at the UE, wherein the unicast DCI field indicates a specific subset of SRS antenna ports from the one or more potential subsets of SRS antenna ports.

[0260] Aspect 17: The method according to aspect 15, the method further comprising: sending a configuration specifying one or more potential subsets of CSI-RS resources in the CSI-RS resource set before the unicast DCI field, wherein the unicast DCI field indicates a specific subset of CSI-RS resources from the one or more potential subsets of CSI-RS resources.

[0261] Aspect 18: According to the method of aspect 17, each CSI-RS resource in the particular subset of the CSI-RS resources is linked to a corresponding antenna port among a plurality of SRS antenna ports at the UE.

[0262] Aspect 19: The method according to any one of Aspects 15 to 17, wherein the unicast DCI field indicates the selection of code point entries.

[0263] Aspect 20: An apparatus for wireless communication at a device, the apparatus comprising: one or more processors; one or more memories coupled to the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method according to one or more aspects of aspects 1 to 12.

[0264] Aspect 21: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being configured to cause the device to perform the method according to one or more of aspects 1 to 12.

[0265] Aspect 22: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 12.

[0266] Aspect 23: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by one or more processors to perform the methods described in accordance with one or more aspects 1 to 12.

[0267] Aspect 24: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1 to 12.

[0268] Aspect 25: A device for wireless communication, the device including a processing system comprising one or more processors and one or more memories coupled to the one or more processors, the processing system being configured to cause the device to perform the method according to one or more of aspects 1 to 12.

[0269] Aspect 26: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to cause the device to perform the method according to one or more of aspects 1 to 12.

[0270] Aspect 27: An apparatus for wireless communication at a device, the apparatus comprising: one or more processors; one or more memories coupled to the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method according to one or more aspects of aspects 13 to 19.

[0271] Aspect 28: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being configured to cause the device to perform the method according to one or more aspects of aspects 13 to 19.

[0272] Aspect 29: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 13 to 19.

[0273] Aspect 30: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by one or more processors to perform the methods described in one or more of aspects 13 to 19.

[0274] Aspect 31: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more aspects 13 to 19.

[0275] Aspect 32: A device for wireless communication, the device including a processing system comprising one or more processors and one or more memories coupled to the one or more processors, the processing system being configured to cause the device to perform the method according to one or more aspects 13 to 19.

[0276] Aspect 33: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to cause the device to perform the method according to one or more aspects of aspects 13 to 19.

[0277] While the foregoing disclosure provides examples and descriptions, it is not intended to be exhaustive or to limit aspects to the precise forms disclosed. Modifications and variations can be made based on the foregoing disclosure, or from various aspects of practice.

[0278] As used herein, the term "component" is intended to be broadly interpreted as hardware or a combination of hardware and at least one of software or firmware. "Software" should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable programs, threads of execution, procedures, or functions, whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. As used herein, a "processor" is implemented in hardware or a combination of hardware and software. It will be apparent that the systems or methods described herein may be implemented in various forms of hardware or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems or methods is not limited in any way. Therefore, the operation and behavior of these systems or methods are described herein without reference to specific software code, as those skilled in the art will understand that the software and hardware can be designed to implement these systems or methods, at least in part, based on the description herein. Unless otherwise stated, a component configured to perform a function means that the component has the capability to perform that function, but it is not necessary for the component to actually perform that function.

[0279] As used in this article, depending on the context, "meeting the threshold" can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0280] As used in this article, the phrase “at least one of” in a list of items refers to any combination of these items, including a single member. As an example, “at least one of the following: a, b, or c” is intended to cover a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination with multiple of the same element (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other ordering of a, b, and c).

[0281] No element, action, or instruction used herein should be construed as essential or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and are interchangeable with “one or more.” Similarly, as used herein, the article “the” is intended to include one or more items mentioned in connection with the article “the” and is interchangeable with “one or more.” Furthermore, as used herein, the terms “group” and “cluster” are intended to include one or more items and are interchangeable with “one or more.” If only one item is desired, the phrase “only one” or similar terminology will be used. Moreover, as used herein, the terms “having” and similar terms are intended as open-ended terms that do not limit the elements they modify (e.g., “having” A may also have B). Additionally, the phrase “based on” is intended to mean “based on or otherwise related to” unless otherwise explicitly stated. Furthermore, as used herein, the term “or” is intended to be inclusive when used consecutively and is interchangeable with “and / or” unless otherwise explicitly stated (e.g., if used in conjunction with “either of the two” or “only one of them”). It should be understood that “one or more” is equivalent to “at least one”.

[0282] Although specific combinations of features are set forth in the claims or disclosed in the description, these combinations are not intended to limit the disclosure of various aspects. Many of these features may be combined in ways not specifically stated in the claims or disclosed in the description. The disclosure of various aspects includes each dependent claim in combination with each other claim in the claim set.

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: One or more memory units; and One or more processors, said one or more processors coupled to said one or more memories, said one or more processors being configured to cause the UE to: Use configuration from multiple antenna ports M Each probe reference signal (SRS) port is used to send one or more SRS signals. M It is the first integer; as well as from N Each Channel State Information Reference Signal (CSI-RS) resource set receives multiple CSI-RS. N The second integer, the N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, wherein the reception is based at least in part on at least one of the following: A first operating condition specifies that the same set of at least one antenna port from the plurality of antenna ports is used to use the... N The first CSI-RS resource set in the CSI-RS resource set M Each corresponding CSI-RS resource is used to receive at least the first CSI-RS among the plurality of CSI-RSs and to use the N The second CSI-RS resource set in the CSI-RS resource set M One corresponding CSI-RS resource is used to receive the second CSI-RS among the plurality of CSI-RSs, or The second operating condition specifies the use of the method for sending the one or more SRSs. M Each of the SRS ports, via an antenna port, receives the... N The respective CSI-RS resource set in each of the CSI-RS resource sets M Each corresponding CSI-RS resource is included in the M Each antenna port in the SRS ports is linked to the N CSI-RS resource set M Each corresponding CSI-RS resource.

2. The apparatus of claim 1, wherein the receiver of the... N Each CSI-RS resource set is at least partially based on the first operating condition, and The first operating condition further specifies that different sets of antenna ports from the plurality of antenna ports are not used to receive the first CSI-RS resource set and the second CSI-RS resource set.

3. The apparatus according to claim 1, wherein... M Each corresponding antenna port in the SRS ports is linked to the N The respective CSI-RS resource set in each of the CSI-RS resource sets M The corresponding CSI-RS resource in each CSI-RS resource The corresponding portion of the CSI-RS carried by the corresponding CSI-RS resource is pre-decoded at least in part based on the corresponding SRS transmitted via the corresponding SRS port in one or more SRSs.

4. The apparatus of claim 1, wherein, in order for the UE to receive the plurality of CSI-RS, the one or more processors are configured to cause the UE to: The first CSI-RS is received using the first CSI-RS resource set at least in part based on at least one of the first or second operating conditions, and the second CSI-RS is received using the second CSI-RS resource set. The one or more processors are further configured to cause the UE to: The time offset and phase offset between the first transmit-receive point (TRP) and the second TRP are calculated using the following: the first CSI-RS received using the first CSI-RS resource set, the second CSI-RS received using the second CSI-RS resource set, and the link to the first CSI-RS. M The SRS ports and the links to the second CSI-RS M One SRS port; and Instructions for the time offset and the phase offset are sent to at least one of the first TRP or the second TRP.

5. The apparatus of claim 1, wherein, in order for the UE to use the M One SRS port is used to send the one or more SRSs, and the one or more processors are configured to enable the UE to: The one or more SRSs are transmitted using a first antenna port and a second antenna port from the plurality of antenna ports, wherein the first antenna port and the second antenna port are included in the plurality of antenna ports. M In each SRS port The first CSI-RS resource set and the second CSI-RS resource set are linked to the M One SRS port In order for the UE to receive the N A set of CSI-RS resources, wherein the one or more processors are configured to cause the UE to: The first CSI-RS and the second CSI-RS are received using the first antenna port, the second antenna port, and at least the third antenna port of the plurality of antenna ports, wherein the third antenna port is not included in the plurality of antenna ports used for transmitting the one or more SRSs. M In each SRS port, and The one or more processors are further configured to cause the UE to: not use a portion of the first CSI-RS and a portion of the second CSI-RS received via the third antenna port to calculate the time offset and phase offset between the first transmit-receive point (TRP) and the second TRP.

6. The apparatus according to claim 1, wherein... N The CSI-RS resource set in the CSI-RS resource set M Each of the corresponding CSI-RS resources in the corresponding CSI-RS resources is linked to the resource included in the above. M The corresponding antenna port in each SRS port, and The one or more processors are further configured to cause the UE to: Receive an instruction to send a CSI report, the CSI report being at least in part based on the CSI-RS resource set. M A corresponding subset of CSI-RS resources in a given CSI-RS resource.

7. The apparatus of claim 6, wherein, in order for the UE to receive the instruction, the one or more processors are configured to cause the UE to: The instruction is received in the unicast downlink control information (DCI) field.

8. An apparatus for wireless communication at a first transmit-receive point (TRP), the apparatus comprising: One or more memory units; and One or more processors, coupled to one or more memories, are configured to cause the first transmit-receive point (TRP) to: Receive sounding reference signal (SRS) from user equipment (UE); Transmit a CSI-RS at least in part based on a CSI-RS resource set including one or more Channel State Information Reference Signal (CSI-RS) resources, wherein the CSI-RS includes pre-decoding at least in part based on the SRS; as well as Receive indications of time offset and phase offset between the first TRP and the second TRP.

9. The apparatus of claim 8, wherein the indication is a first indication, and The one or more processors are further configured to cause the first transmit-receive point (TRP): Send a second instruction to send a CSI report, the CSI report being based at least in part on a subset of the one or more CSI-RS resources.

10. The apparatus of claim 9, wherein, in order for the first transmit-receive point (TRP) to receive the instruction, the one or more processors are configured to cause the first transmit-receive point (TRP) to: The instruction is sent in the unicast downlink control information (DCI) field.

11. The apparatus of claim 10, wherein the one or more processors are further configured to cause the first transmit / receive point (TRP): Before the unicast DCI field, a configuration specifying one or more potential subsets of SRS antenna ports among a plurality of SRS antenna ports configured at the UE is transmitted, wherein the unicast DCI field indicates a specific subset of SRS antenna ports from the one or more potential subsets of SRS antenna ports.

12. The apparatus of claim 10, wherein the one or more processors are further configured to cause the first transmit / receive point (TRP): A configuration specifying one or more potential subsets of CSI-RS resources in the CSI-RS resource set is sent before the unicast DCI field, wherein the unicast DCI field indicates a specific subset of CSI-RS resources from the one or more potential subsets of CSI-RS resources.

13. The apparatus of claim 12, wherein each CSI-RS resource in the particular subset of the CSI-RS resources is linked to a corresponding antenna port among a plurality of SRS antenna ports at the UE.

14. The apparatus of claim 10, wherein the unicast DCI field indicates the selection of code point entries.

15. A method for wireless communication performed by a user equipment (UE), the method comprising: Use configuration from multiple antenna ports M Each probe reference signal (SRS) port is used to send one or more SRS signals. M It is the first integer; as well as from N Each Channel State Information Reference Signal (CSI-RS) resource set receives multiple CSI-RS. N The second integer, the N Each corresponding CSI-RS resource set in a CSI-RS resource set includes M A corresponding CSI-RS resource, wherein the reception is based at least in part on at least one of the following: A first operating condition specifies that the same set of at least one antenna port from the plurality of antenna ports is used to use the... N The first CSI-RS resource set in the CSI-RS resource set M Each corresponding CSI-RS resource is used to receive at least the first CSI-RS among the plurality of CSI-RSs and to use the N The second CSI-RS resource set in the CSI-RS resource set M One corresponding CSI-RS resource is used to receive the second CSI-RS among the plurality of CSI-RSs, or The second operating condition specifies the use of the method for sending the one or more SRSs. M Each of the SRS ports, via an antenna port, receives the... N The respective CSI-RS resource set in each of the CSI-RS resource sets M Each corresponding CSI-RS resource, the M Each antenna port in the SRS ports is linked to the N CSI-RS resource set M Each corresponding CSI-RS resource.

16. The method of claim 15, wherein... M Each corresponding antenna port in the SRS ports is linked to the N In each of the A CSI-RS resources in a given CSI-RS resource set within a given CSI-RS resource set M One corresponding CSI-RS resource, The corresponding portion of the CSI-RS carried by the corresponding CSI-RS resource is pre-decoded at least in part based on the corresponding SRS transmitted via the corresponding SRS port in one or more SRSs.

17. The method of claim 15, wherein receiving the plurality of CSI-RS further comprises: The first CSI-RS is received using the first CSI-RS resource set at least in part based on at least one of the first or second operating conditions, and the second CSI-RS is received using the second CSI-RS resource set. The method further includes: The time offset and phase offset between the first transmit-receive point (TRP) and the second TRP are calculated using the following: the first CSI-RS received using the first CSI-RS resource set, the second CSI-RS received using the second CSI-RS resource set, and the link to the first CSI-RS. M The SRS ports and the links to the second CSI-RS M One SRS port; and Instructions for the time offset and the phase offset are sent to at least one of the first TRP or the second TRP.

18. The method of claim 15, wherein the method is used... M One SRS port is used to send the one or more SRSs, including: The one or more SRSs are transmitted using a first antenna port and a second antenna port from the plurality of antenna ports, wherein the first antenna port and the second antenna port are included in the plurality of antenna ports. M In each SRS port The first CSI-RS resource set and the second CSI-RS resource set are linked to the M One SRS port Among them receiving the N The CSI-RS resource set also includes: The first CSI-RS and the second CSI-RS are received using the first antenna port, the second antenna port, and at least the third antenna port of the plurality of antenna ports, wherein the third antenna port is not included in the plurality of antenna ports used for transmitting the one or more SRSs. M In each SRS port, and The method further includes: The time offset and phase offset between the first transmit / receive point (TRP) and the second TRP are not calculated using a portion of the first CSI-RS and a portion of the second CSI-RS received via the third antenna port.

19. The method of claim 15, wherein... N The CSI-RS resource set in the CSI-RS resource set M Each of the corresponding CSI-RS resources in the corresponding CSI-RS resources is linked to the resource included in the above. M The corresponding antenna port in each SRS port, and The method further includes: Receive an instruction to send a CSI report, the CSI report being at least in part based on the CSI-RS resource set. M A corresponding subset of CSI-RS resources in a given CSI-RS resource.

20. The method of claim 19, wherein the indication includes a unicast DCI field indicating the selection of a code point entry.

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