Communication method and device

Abstract

The invention provides a communication method and device. A communication method includes: receiving, by a processor of an apparatus, a transmit receive point reference signal (TRP-RS); receiving, by the processor, a first configuration, wherein the first configuration indicates that the TRP-RS is associated with a second reference signal through a first quasi-co-location QCL type; and transmitting or receiving, by the processor, the second reference signal based on at least one parameter determined according to the first QCL type. By utilizing the present invention, QCL update and indication can be more efficient.

Description

Technical Field

[0001] This invention relates generally to mobile communications, and more specifically to a hierarchical quasi-co-location (QCL) structure associated with user equipment (UE) and network devices in mobile communications. Background Technology

[0002] Unless otherwise stated, the methods described in this section are not considered prior art in the claims, nor are they considered prior art by virtue of their inclusion in this section.

[0003] In 5G New Radio (NR), quasi-co-location refers to a scenario where user equipment (UE) can assume that different antenna ports share certain common channel properties. These properties include Doppler spread, Doppler shift, average delay, delay spread, etc. The QCL framework allows the UE to reuse channel estimation results obtained from the source reference signal for receiving another signal or channel that is QCLed with the first signal. This reduces the complexity and power consumption of the UE's receiver.

[0004] However, the currently developed QCL framework employs a synthesized QCL relationship between the source and target reference signals, which leads to complex QCL updates and indications. Therefore, a new QCL framework is needed to address these issues. Summary of the Invention

[0005] The following overview is illustrative only and is not intended to be limiting in any way. That is, it is provided to introduce the concept, key points, benefits, and advantages of the novel and non-obvious techniques described in this invention. Selected implementations are further described in the detailed description below. Therefore, the following overview is not intended to identify essential features of the claimed subject matter, nor is it intended to define the scope of the claimed subject matter.

[0006] This invention provides a communication method comprising: receiving a Transmit Receive Point Reference Signal (TRP-RS) by a processor of a device; receiving a first configuration by the processor, wherein the first configuration indicates that the TRP-RS is associated with a second reference signal via a first quasi-co-bit (QCL) type; and transmitting or receiving the second reference signal by the processor based on at least one parameter determined according to the first QCL type.

[0007] This invention provides a communication device comprising: a transceiver for wireless communication during operation; and a processor communicatively coupled to the transceiver, such that during operation, the processor performs the following operations: receiving a Transmit Receive Point Reference Signal (TRP-RS) via the transceiver; receiving a first configuration via the transceiver, wherein the first configuration indicates that the TRP-RS is associated with a second reference signal via a first quasi-co-bit QCL type; and transmitting or receiving the second reference signal via the transceiver based on at least one parameter determined according to the first QCL type.

[0008] This invention provides a communication method comprising: transmitting a TRP-RS from a network node's processor to a user equipment (UE); and transmitting a first configuration from the processor to the UE, wherein the first configuration indicates that the TRP-RS is associated with a second reference signal via a first QCL type.

[0009] It is worth noting that while the descriptions provided herein can be used in the context of certain radio access technologies, networks, and network topologies, such as LTE, LTE Advanced, LTE Advanced Pro, 5G, NR, IoT, NB-IoT, IIoT, B5G, and 6G, the proposed concepts, schemes, and any variations / derivatives thereof can be implemented in, used in, and by other types of radio access technologies, networks, and network topologies. Therefore, the scope of the invention is not limited to the examples described herein. Attached Figure Description

[0010] Figure 1 This is an example scenario according to an embodiment of the present invention.

[0011] Figure 2 It is a layered QCL structure according to an embodiment of the present invention.

[0012] Figure 3 It is a non-layered QCL structure.

[0013] Figure 4 This is another layered QCL structure according to an embodiment of the present invention.

[0014] Figure 5 This is an example scenario according to an embodiment of the present invention.

[0015] Figure 6 This is an example communication system according to an embodiment of the present invention.

[0016] Figure 7 This is an example process according to an embodiment of the present invention.

[0017] Figure 8This is an example process according to an embodiment of the present invention. Detailed Implementation

[0018] This invention discloses detailed embodiments and implementations of the claimed subject matter. However, it should be understood that the inventive embodiments and implementations are merely illustrative of the claimed subject matter, which can be implemented in various forms. Moreover, the invention can be implemented in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided to make the specification of this invention comprehensive and complete, and to fully convey the scope of the invention to those skilled in the art. In the following description, details of known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

[0019] Overview

[0020] Embodiments of the present invention relate to various techniques, methods, schemes, and / or solutions related to hierarchical quasi-co-location structures associated with user equipment and network devices in mobile communications. According to the present invention, multiple possible schemes can be implemented individually or in combination. That is, although these possible solutions may be described individually below, two or more of these possible solutions may be implemented in a combination or other combined manner.

[0021] Figure 1 This is an example scenario according to an embodiment of the present invention. Scenario 100 involves at least one network node and a UE, which may be part of a wireless communication network (e.g., an LTE network, a 5G / NR network, an IoT network, or a 6G network). Scenario 100 illustrates a network framework. The UE may connect to the network side. The network side may include one or more network nodes.

[0022] In some embodiments, the network node may transmit one or more reference signals (RS) to the UE. Furthermore, the network node may transmit configuration indicating a QCL relationship between the reference signals (e.g., one reference signal is associated with another reference signal via a certain QCL type). Specifically, the reference signals with QCL relationships indicated by the configuration are associated with two adjacent layers of the QCL structure. In other words, scenario 100 supports a hierarchical QCL structure, where the UE can receive a source reference signal and configuration from the network node, the configuration indicating the QCL relationship between the source reference signal and the target reference signal. Due to its hierarchical structure, the source reference signal and the target reference signal reside in two immediately adjacent layers of the QCL structure. Based on this QCL relationship, the UE can then determine at least one parameter for the reception or transmission of the target reference signal.

[0023] Figure 2 This is a layered QCL structure 200 according to an embodiment of the present invention. For example... Figure 2 As shown, the hierarchical QCL structure 200 comprises three layers. The reference signal associated with the first layer of the hierarchical QCL structure 200 is referred to as the first-layer reference signal; similarly, the reference signals associated with the second and third layers are referred to as the second-layer and third-layer reference signals, respectively. In the hierarchical QCL structure 200, each arrow originates from a target reference signal and terminates at its source reference signal. The first-layer reference signal can be the source reference signal of one or more second-layer reference signals. Furthermore, the second-layer reference signal can be the source reference signal of one or more third-layer reference signals. In one embodiment, there are no cross-layer QCL relationships in the hierarchical QCL structure 200. That is, the first-layer reference signal is not the source reference signal of any third-layer reference signal.

[0024] Figure 3 The non-hierarchical QCL structure 300 involves reference signals such as the Synchronization Signal Block (SSB), Channel State Information Reference Signal (CSI-RS) for tracking, CSI-RS for beam measurement (BM), Physical Downlink Shared Channel (PDSCH) Demodulation Reference Signal (DM-RS), Physical Downlink Control Channel (PDCCH) DM-RS, and CSI-RS for CSI. Each arrow in the non-hierarchical QCL structure 300 points from the target reference signal to the source reference signal. Compared to the hierarchical QCL structure 200, the non-hierarchical QCL structure 300 utilizes the synthesized QCL relationship between the source and target reference signals, resulting in complex QCL updates and indications.

[0025] Figure 4This is another layered QCL structure 400 according to an embodiment of the present invention. In the layered QCL structure 400, the reference signal may include a single-frequency network (SFN)-SSB, a non-SFN-SSB, a transmit-receive-point reference signal (TRP-RS), a PDSCH DM-RS, a PDCCH DM-RS, a CSI-RS, a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a probe reference signal (SRS). Specifically, SFN-SSB and non-SFN-SSB are the first-layer reference signals, TRP-RS is the second-layer reference signal, and PDSCH / PDCCH DM-RS (i.e., PDxCH DM-RS), CSI-RS, PUSCH / PUCCH (i.e., PUxCH), and SRS are the third-layer reference signals. In the layered QCL structure 400, each arrow represents a QCL relationship, originating from the target reference signal and pointing to its source reference signal. That is, TRP-RS can be the source reference signal of PDxCH DM-RS, CSI-RS, PUxCH, or SRS. The SSB (whether SFN-SSB or non-SFN-SSB) can be the source reference signal of the TRP-RS.

[0026] Based on the hierarchical QCL structure 400, the parameters for receiving or transmitting PDxCH DM-RS, CSI-RS, PUxCH, and SRS can be determined through network configuration, where the network configuration associates the TRP-RS with the target reference signal through a specific QCL type. Furthermore, based on the hierarchical QCL structure 400, the parameters for receiving the TRP-RS can be determined through another network configuration, which associates the SSB (whether SFN-SSB or non-SFN-SSB) with the TRP-RS through a specific QCL type.

[0027] SFN-SSB (also known as I-SSB) is the same SSB synchronously broadcast by a single base station (e.g., gNB) or multiple TRPs within a cell. This synchronous transmission helps the UE perform coarse time / frequency (T / F) tracking. Notably, UEs in idle / inactive modes may monitor SFN-SSB to perform tasks such as system information acquisition and idle mode mobility procedures. In addition to the common SSB, TRP-RS (also known as M-SSB) is also transmitted by each individual TRP. TRP-RS is TRP-specific and designed to be an always-on signal. Its primary purpose is to enable the UE to perform fine T / F tracking. TRP-RS also plays a crucial role in connected mode mobility, allowing the UE to assess the signal quality of a specific TRP for potential handover scenarios. Therefore, UEs operating in connected mode may monitor both SFN-SSB and TRP-RS. Figure 5As shown in scenario 500, TRP_1, TRP_2, and TRP_N (where N is a positive integer) are associated with a base station and may transmit the same SFN-SSB. Each of TRP_1, TRP_2, and TRP_N may further transmit TRP-RS_1, TRP-RS_2, and TRP-RS_N. SFN-SSBs can be used for base station / cell-level measurements, while TRP-RS can be used for TRP-level measurements. When the UE is in idle / inactive mode, SFN-SSBs from TRP_1, TRP_2, and TRP_N can be monitored periodically according to the SSB Measurement Timing Configuration (SMTC). When the UE is in connected mode, SFN-SSBs, as well as TRP-RS_1, TRP-RS_2, and TRP-RS_N, can be monitored periodically according to the SMTC.

[0028] Back Figure 4 In one embodiment, SFN-SSBs in the hierarchical QCL structure 400 may be transmitted by a base station / cell / TRP operating in frequency range (FR) 1 or FR3, while non-SFN-SSBs may be transmitted by a base station / cell / TRP operating in FR2. Furthermore, for example, TRP-RS may be used for fine T / F tracking and / or BM (spatial filtering parameters). That is, T / F tracking and / or BM may share the same reference signal resource. By using a single reference signal resource for tracking and BM, the reference signal configuration and QCL structure can be further simplified. CSI-RS may be a CSI-RS for channel acquisition or a zero-power (ZP) CSI-RS for rate matching. It should be noted that the hierarchical QCL structure 400 may include other reference signals, such as TRP-RS for Layer 1 (L1) / L2 or L3 mobility, or CSI-interference measurement (IM).

[0029] In one embodiment, a network node may use a Transport Configuration Indicator (TCI) framework to indicate QCL relationships in a hierarchical quasi-co-location structure 400. Specifically, the TCI state may indicate a source reference signal and a corresponding QCL type. In this invention, a QCL type may be any one or a combination of QCL type A, QCL type B, QCL type C, QCL type D, and spatial relationships. Each QCL type is associated with one or more parameters of radio channel attributes. For example, QCL type A is associated with parameters of Doppler shift, Doppler spread, average delay, and delay spread; QCL type B is associated with parameters of Doppler shift and Doppler spread; QCL type C is associated with parameters of average delay and delay spread; QCL type D is associated with spatial reception (Rx) parameters; and spatial relationships are associated with parameters of uplink (UL) transmission. In one example, a network node may use a combination of Radio Resource Control (RRC) signaling, Media Access Control-Control Element (MAC-CE) signaling, and PDCCH to inform the UE of the QCL relationship indicated by the TCI state. The TCI state configuration associated with the hierarchical quasi-co-location structure 400 is as follows. The phrase "when applicable" in the subsequent configuration may refer to scenarios where the UE operates in the high frequency band.

[0030] For DM-RS of PDxCH, the UE should expect the TCI state to indicate one of the following QCL types:

[0031] • QCL type A with TRP-RS resources, and, where applicable, QCL type D with the same TRP-RS resources, or

[0032] • QCL type B with TRP-RS resources, and QCL type D with the same TRP-RS resources, where applicable.

[0033] For CSI-RS resources, the UE should expect the TCI status to indicate one of the following QCL types:

[0034] • QCL type A with TRP-RS resources, and, where applicable, QCL type D with the same TRP-RS resources, or

[0035] • QCL type B with TRP-RS resources, and QCL type D with the same TRP-RS resources, where applicable.

[0036] For PUxCH, the UE should expect the TCI state to indicate one of the following QCL types:

[0037] • QCL type A with TRP-RS resources, and, where applicable, QCL type D with the same TRP-RS resources.

[0038] • QCL type B with TRP-RS resources, and, where applicable, QCL type D with the same TRP-RS resources, or

[0039] • Where applicable, it has the 'spatial relationship' of TRP-RS resources.

[0040] For SRS resources, the UE should expect the TCI state to indicate one of the following QCL types:

[0041] • QCL type A with TRP-RS resources, and, where applicable, QCL type D with the same TRP-RS resources.

[0042] • QCL type B with TRP-RS resources, and, where applicable, QCL type D with the same TRP-RS resources, or

[0043] • Where applicable, it has the 'spatial relationship' of TRP-RS resources.

[0044] For TRP-RS resources, the UE should expect the TCI state to indicate one of the following QCL types:

[0045] • QCL type C with SFN-SSB resources, and, where applicable, QCL type D with the same SFN-SSB resources, or

[0046] • QCL type C with non-SFN-SSB resources, and QCL type D with the same non-SFN-SSB resources, where applicable.

[0047] Based on the hierarchical QCL structure 400, the user equipment can receive a source reference signal and determine the parameters for transmitting or receiving a target reference signal according to the QCL relationship indicated by the activated TCI state. In one embodiment, for transmitting or receiving PDxCH DM-RS, CSI-RS, PUxCH, or SRS, the user equipment can receive a configuration indicating the TCI state, wherein the specified source reference signal is TRP-RS and the corresponding QCL type, which may be QCL type A or QCL type B, and may also include QCL type D where applicable. In another embodiment, for receiving TRP-RS, the user equipment can receive a configuration indicating the TCI state, wherein the specified source reference signal is SFN-SSB or non-SFN-SSB and the corresponding QCL type (QCL type C and, where applicable, QCL type D). In yet another embodiment, for transmitting PUxCH or SRS, the user equipment can receive a configuration indicating the TCI state, wherein the specified source reference signal is TRP-RS and the corresponding QCL type, where applicable, is a spatial relationship.

[0048] like Figure 4 As shown, the root reference signal of the layered QCL structure 400 is the SSB. However, in another embodiment, if the QCL or timing relationship between the SFN-SSB and the TRP-RS is not available, the TRP-RS can be the root reference signal of the layered QCL structure.

[0049] It should be noted that in the foregoing embodiments, the hierarchical QCL structure 200 or 400 has three layers; however, this disclosure is not limited thereto. The hierarchical QCL structure may have two or more layers. Regardless of the number of layers, the source reference signal and the target reference signal are associated with two adjacent layers within the hierarchical QCL structure. Utilizing the hierarchical structure of the QCL framework, QCL updates and indications can be more efficient.

[0050] Illustrative Implementation

[0051] Figure 6 This is an example communication system 600 according to an embodiment of the present invention, including an example communication device 610 and an example network device 620. The communication device 610 and the network device 620 can perform various functions to implement the schemes, techniques, processes and methods related to the hierarchical quasi-co-location structure associated with user equipment and network devices in mobile communications described herein, including the above-described scenarios / schemes and the processes 700 and 800 described below.

[0052] The communication device 610 can be part of an electronic device, which can be a UE (User Equipment), such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, the communication device 610 can be implemented in a smartphone, smartwatch, personal digital assistant, electronic control unit (ECU) in a vehicle, digital camera, or computing device such as a tablet, laptop, or notebook computer. The communication device 610 can also be part of a machine-type device, which can be an Internet of Things (IoT), narrowband Internet of Things (NB-IoT), enhanced machine-type communication (eMTC), or industrial Internet of Things (IIoT) user equipment, such as a fixed or stationary device, a home appliance, a roadside unit (RSU), a wired communication device, or a computing device. For example, the communication device 610 can be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. Alternatively, the communication device 610 may be implemented as one or more integrated circuit (IC) chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction-set computing (RISC) processors, or one or more complex-instruction-set computing (CISC) processors. The communication device 610 may include... Figure 6 At least a portion of the components shown, such as processor 612. Communication device 610 may also include one or more other components unrelated to the embodiments presented herein (e.g., internal power supply, display device, and / or user interface device), but for the sake of brevity, these components of communication device 610 are not listed here. Figure 6 It is shown in the text and is not described in the following text.

[0053] Network device 620 may be part of a network device, which may be a network node, such as a satellite, BS, small cell, router, or gateway for an IoT network. For example, network device 620 may be implemented in an eNB / gNB / TRP, satellite, or base station in a satellite or 4G / 5G / B5G / 6G, NR, IoT, NB-IoT, or IIoT network. Alternatively, network device 620 may be implemented as one or more IC chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, or one or more RISC or CISC processors. Network device 620 may include... Figure 6At least a portion of the components shown, such as processor 622. Network device 620 may also include one or more other components unrelated to the embodiments presented herein (e.g., internal power supply, display device, and / or user interface device), but for the sake of brevity, these components of network device 620 are not listed here. Figure 6 This is shown in the text and not described in the following text.

[0054] On the one hand, each of processors 612 and 622 can be implemented as one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, even though the singular term "one processor" is used herein to refer to processors 612 and 622, according to the present invention, each of processors 612 and 622 may include multiple processors in some implementations and a single processor in other implementations. On the other hand, each of processors 612 and 622 can be implemented as hardware (and optionally firmware) containing electronic components, such as, but not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and / or one or more variable capacitors, which are configured and arranged to achieve a specific purpose according to the present invention. In other words, at least in some implementations, processors 612 and 622 are dedicated machines specifically designed, configured, and arranged to perform specific tasks in devices (e.g., represented by communication device 610) and networks (e.g., represented by network device 620) including hierarchical quasi-co-location structures according to various embodiments of the present invention.

[0055] In some implementations, the communication device 610 may further include a transceiver 616 coupled to the processor 612, capable of wirelessly transmitting and receiving data. In some implementations, the communication device 610 may further include a memory 614 coupled to the processor 612, accessible by the processor 612 and storing data therein. In some implementations, the network device 620 may further include a transceiver 626 connected to the processor 622, capable of wirelessly transmitting and receiving data. In some implementations, the network device 620 may further include a memory 624 connected to the processor 622, accessible by the processor 622 and storing data therein. Therefore, the communication device 610 and the network device 620 can wirelessly communicate via their respective transceivers 616 and 626.

[0056] For better understanding, the following describes the operation, functions, and capabilities of communication device 610 and network device 620 in a mobile communication environment, wherein communication device 610 is implemented as a communication device or user equipment, and network device 620 is implemented as a network node of a communication network.

[0057] Explanatory process

[0058] Figure 7 This is an example process 700 according to an embodiment of the present invention. Process 700 may represent part or all of an aspect of implementing the design, concept, scheme, system, and method described above related to the hierarchical quasi-co-location structure in mobile communications. More specifically, process 700 may represent one aspect of the implementation of a feature of communication device 610. Process 700 may include one or more operations, actions, or functions as shown by one or more blocks 710, 720, and 730 in the figures. Although shown as discrete blocks, depending on the desired implementation, the blocks of process 700 may be divided into more blocks, merged into fewer blocks, or deleted. Furthermore, the blocks / sub-blocks of process 700 may be arranged in... Figure 7 The process can be executed in the order shown, or in a different order. Furthermore, one or more blocks / sub-blocks of process 700 can be executed iteratively. Process 700 can be implemented by communication device 610 or any suitable user equipment or machine type device. For illustrative and non-limiting purposes, process 700 will be described below in the context of communication device 610. Process 700 may begin with block 710.

[0059] At 710, process 700 may involve the processor 612 of communication device 610 receiving TRP-RS via transceiver 616. Process 700 may continue from 710 to 720.

[0060] At 720, process 700 may involve the processor 612 of communication device 610 receiving a first configuration via transceiver 616, wherein the first configuration indicates that the TRP-RS is associated with a second reference signal via a first QCL type. Process 700 may continue from 720 to 730.

[0061] At 730, process 700 may involve the processor 612 of communication device 610 transmitting or receiving a second reference signal via transceiver 616 based on at least one parameter determined according to a first QCL type.

[0062] In some implementations, the second reference signal may include at least one of the following: Physical Downlink Shared Channel (PDSCH) Demodulation Reference Signal (DM-RS), Physical Downlink Control Channel (PDCCH) DM-RS, Channel State Information Reference Signal (CSI-RS), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and Sounding Reference Signal (SRS). Process 700 may further involve the processor 612 of the communication device 610 determining parameters including Doppler shift, Doppler spread, average delay, and delay spread when the first QCL type includes QCL type A. Process 700 may further involve the processor 612 of the communication device 610 determining parameters including Doppler shift and Doppler spread when the first QCL type includes QCL type B. Process 700 may further involve the processor 612 of the communication device 610 transmitting or receiving the second reference signal via transceiver 616 based on the determined parameters.

[0063] In some implementations, when the second reference signal includes any or a combination of PDSCH DM-RS, PDCCH DM-RS, CSI-RS, PUSCH, PUCCH, and SRS, process 700 may further involve the processor 612 of the communication device 610 determining parameters that further include spatial reception (Rx) parameters when the first QCL type further includes QCL type D.

[0064] In some implementations, the second reference signal may include at least one of PUSCH, PUCCH, and SRS. Process 700 may further involve the processor 612 of the communication device 610 determining parameters including spatial relationships of uplink transmissions. Process 700 may further involve the processor 612 of the communication device 610 transmitting the second reference signal via transceiver 616 based on the determined parameters.

[0065] In some implementations, process 700 may further involve the processor 612 of the communication device 610 receiving a synchronization signal block (SSB) via transceiver 616. Process 700 may further involve the processor 612 of the communication device 610 receiving a second configuration via transceiver 616, wherein the second configuration indicates that the SSB is associated with the TRP-RS via a second QCL type.

[0066] In some implementations, the SSB is either a single-frequency network (SFN)-SSB or a non-SFN-SSB.

[0067] In some implementations, process 700 may further involve the processor 612 of communication device 610 determining at least one parameter, including Doppler frequency shift and average delay, when the second QCL type includes QCL type C. Process 700 may further involve the processor 612 of communication device 610 receiving TRP-RS via transceiver 616 based on the determined parameters.

[0068] In some implementations, in order to receive TRP-RS, process 700 may further involve the processor 612 of communication device 610 determining parameters that further include spatial reception (Rx) parameters when the second QCL type further includes QCL type D.

[0069] In some implementations, TRP-RS is used for fine time / frequency tracking and / or for beam measurement.

[0070] Figure 8 This is an example process 800 according to an embodiment of the present invention. Process 800 may represent part or all of an aspect of implementing the design, concept, scheme, system, and method described above related to the hierarchical quasi-co-location structure in mobile communications. More specifically, process 800 may represent an aspect of the feature implementation of network device 620 or any suitable network node. Process 800 may include one or more operations, actions, or functions as shown in one or more blocks 810-820 in the figures. Although shown as discrete blocks, depending on the desired implementation, the individual blocks of process 800 may be divided into more blocks, merged into fewer blocks, or deleted. Furthermore, the blocks / sub-blocks of process 800 may be arranged in... Figure 8 The execution can proceed in the order shown, or in a different order. Process 800 can begin at block 810.

[0071] At 810, process 800 may involve the processor 622 of network device 620 transmitting TRP-RS to user equipment (e.g., communication device 610) via transceiver 626. Process 800 may continue from 810 to 820.

[0072] At 820, process 800 may involve the processor 622 of network device 620 transmitting a first configuration to user equipment via transceiver 626. Specifically, the first configuration indicates that TRP-RS is associated with a second reference signal via a first QCL type.

[0073] In some implementations, the second reference signal may include at least one of the following: Physical Downlink Shared Channel (PDSCH) Demodulation Reference Signal (DM-RS), Physical Downlink Control Channel (PDCCH) DM-RS, Channel State Information Reference Signal (CSI-RS), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and Sounding Reference Signal (SRS), and the first QCL type includes QCL type A.

[0074] In some implementations, the second reference signal includes at least one of PDSCH DM-RS, PDCCH DM-RS, CSI-RS, PUSCH, PUCCH, and SRS, and the first QCL type includes QCL type B.

[0075] In some implementations, the second reference signal includes at least one of PDSCH DM-RS, PDCCH DM-RS, CSI-RS, PUSCH, PUCCH, and SRS, and the first QCL type includes QCL type A and QCL type D.

[0076] In some implementations, the second reference signal includes at least one of PDSCH DM-RS, PDCCH DM-RS, CSI-RS, PUSCH, PUCCH, and SRS, and the first QCL type includes QCL type B and QCL type D.

[0077] In some implementations, the second reference signal includes at least one of PUSCH, PUCCH, and SRS, and the first QCL type includes the spatial relationship of the uplink transmission.

[0078] In some implementations, process 800 may also involve the processor 622 of network device 620 transmitting a synchronization signal block, the SSB being either an SFN-SSB or a non-SFN-SSB, to user equipment via transceiver 626. Furthermore, process 800 may involve the processor 622 of network device 620 transmitting a second configuration via transceiver 626, wherein the second configuration indicates that the SSB is associated with the TRP-RS via a second QCL type.

[0079] In some implementations, the second QCL type includes QCL type C.

[0080] In some implementations, the second QCL type includes QCL type C and QCL type D.

[0081] In some implementations, TRP-RS is used for fine time / frequency tracking and / or for beam measurement.

[0082] Additional Notes

[0083] The subject matter described in this invention sometimes illustrates different components included within or connected to other components. However, it should be understood that these depicted architectures are merely examples, and many other architectures implementing the same functionality can actually be implemented. Conceptually, any arrangement of components implementing the same function is effectively “associated” to enable the desired functionality. Therefore, regardless of architecture or intermediate components, any two components combined in this invention to achieve a specific function can be considered “associated” with each other to enable the desired functionality. Similarly, any two such associated components can also be considered “operationally connected” or “operationally coupled” to each other to achieve the desired functionality, and any two components that can be suchly associated can also be considered “operationally coupled” to each other to achieve the desired functionality. Specific examples of operationally coupled components include, but are not limited to, physically mating and / or physically interacting components and / or wirelessly interacting components and / or logically interacting and / or logically interactable components.

[0084] Furthermore, regarding any plural and / or singular terms used substantially in this invention, those skilled in the art can convert them from plural to singular and / or from singular to plural as appropriate for the content and / or application. For clarity, various singular / plural substitutions may be explicitly stated in this invention.

[0085] Furthermore, those skilled in the art will understand that, generally, the terms used in this invention, and especially in the appended claims (e.g., the body of the appended claims), are generally meant as “open-ended” terms. For example, the term “comprising” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “at least having,” the term “comprising” should be interpreted as “including but not limited to,” and so on. Those skilled in the art will also understand that if a specific number of claims is intentionally listed, this intention will be explicitly listed in the claims, and the absence of such a listing will not indicate this intention. For example, to aid understanding, the appended claims may include the use of the introductory phrases “at least one” and “one or more.” However, the use of such phrases should not be construed as implying that the introduction of the indefinite article “a” or “an” limits any particular claim that includes such an introductory claim to only one embodiment of such a listing, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an,” for example, “a and / or one” should be interpreted as meaning “at least one” or “one or more,” the same applies to the use of definite articles used to introduce claims. Furthermore, even when a specific number of the introduced claims are explicitly listed, those skilled in the art will recognize that such a listing should be interpreted as meaning at least the number listed. For example, in the absence of other modifiers, the basic listing of "two listings" means at least two listings or two or more listings. Additionally, when using conventions such as "at least one of A, B, and C," it generally means, in the sense that those skilled in the art will understand, that a system having at least one of A, B, and C will include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B together, having A and C together, having B and C together, and / or having A, B, and C together. When using conventions such as "at least one of A, B, or C," it generally means, in the sense that those skilled in the art will understand, that a system having at least one of A, B, or C will include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B together, having A and C together, having B and C together, and / or having A, B, and C together. Those skilled in the art will also understand that any transitional words and / or phrases in the specification, claims, or drawings that actually indicate two or more options should be understood to include the possibility of including one, any, or both of these items. For example, the phrase "A or B" will be understood to include the possibility of including "A" or "B" or "A and B".

[0086] As can be seen from the foregoing, it is understood that various embodiments of the present invention have been described for illustrative purposes, and various modifications can be made without departing from the scope and spirit of the invention. Therefore, the various embodiments disclosed in this invention are not intended to be limiting, and the true scope and spirit are determined by the appended claims.

Claims

1. A communication method, comprising: The processor of the device receives the Transmit Receive Point Reference Signal (TRP-RS). The processor receives a first configuration, wherein the first configuration indicates that the TRP-RS is associated with a second reference signal via a first quasi-co-bit QCL type; and The processor transmits or receives the second reference signal based on at least one parameter determined according to the first QCL type.

2. The communication method as described in claim 1, characterized in that, The second reference signal includes at least one of the following: Physical Downlink Shared Channel (PDSCH) demodulation reference signal DM-RS, Physical Downlink Control Channel (PDCCH) DM-RS, Channel State Information Reference Signal (CSI-RS), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and Sound Reference Signal (SRS); and transmitting or receiving the second reference signal further includes: When the first QCL type includes QCL type A, the parameter is determined to include Doppler frequency shift, Doppler spread, average delay, and delay spread; When the first QCL type includes QCL type B, the parameter is determined to include the Doppler frequency shift and the Doppler spread; and The second reference signal is transmitted or received based on the determined parameters.

3. The communication method as described in claim 2, characterized in that, Further includes: When the first QCL type includes QCL type D, it is determined that the parameter further includes space reception parameters.

4. The communication method as described in claim 1, characterized in that, The second reference signal includes at least one of PUSCH, PUCCH, and SRS, and transmitting or receiving the second reference signal further includes: Determining this parameter includes the spatial relationship of uplink transmission; and The second reference signal is transmitted based on the determined parameters.

5. The communication method as described in claim 1, characterized in that, Further includes: The processor receives the synchronization signal block SSB; and The processor receives a second configuration, wherein the second configuration indicates that the SSB is associated with the TRP-RS via a second QCL type.

6. The communication method as described in claim 5, characterized in that, The SSB is either a single-frequency network SFN-SSB or a non-SFN-SSB.

7. The communication method as described in claim 5, characterized in that, Receiving the TRP-RS further includes: When the second QCL type includes QCL type C, at least one second parameter is determined to include Doppler frequency shift and average delay; and The TRP-RS is received based on the determined second parameter.

8. The communication method as described in claim 7, characterized in that, Further includes: When the second QCL type further includes QCL type D, it is determined that the second parameter further includes space reception parameters.

9. The communication method as described in claim 1, characterized in that, The TRP-RS is used for fine time / frequency (T / F) tracking and / or for beam measurement.

10. A communication device, comprising: A transceiver is used for wireless communication during operation; as well as A processor, communicatively coupled to the transceiver, enables the processor to perform the following operations during operation: The transceiver receives and transmits the receiver point reference signal (TRP-RS). The transceiver receives a first configuration, wherein the first configuration indicates that the TRP-RS is associated with a second reference signal via a first quasi-common QCL type; as well as The second reference signal is transmitted or received by the transceiver based on at least one parameter determined according to the first QCL type.

11. The communication device as claimed in claim 10, characterized in that, The second reference signal includes at least one of the following: Physical Downlink Shared Channel (PDSCH) demodulation reference signal DM-RS, Physical Downlink Control Channel (PDCCH) DM-RS, Channel State Information Reference Signal (CSI-RS), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and Probe Reference Signal (SRS). Furthermore, in operation, the processor performs the following operations: When the first QCL type includes QCL type A, the parameter is determined to include Doppler frequency shift, Doppler spread, average delay, and delay spread; When the first QCL type includes QCL type B, the parameter is determined to include the Doppler frequency shift and the Doppler spread; and The second reference signal is transmitted or received through the transceiver based on the determined parameters.

12. The communication device as claimed in claim 11, characterized in that, During operation, the processor further performs the following operations: When the first QCL type includes QCL type D, it is determined that the parameter further includes space reception parameters.

13. The communication device as claimed in claim 10, characterized in that, The second reference signal includes at least one of PUSCH, PUCCH, and SRS, and in operation, the processor further performs the following operations: Determining this parameter includes the spatial relationship of uplink transmission; and The second reference signal is transmitted through the transceiver based on the determined parameters.

14. The communication device as claimed in claim 10, characterized in that, During operation, the processor further performs the following operations: The transceiver receives the synchronization signal block SSB. The transceiver receives a second configuration, wherein the second configuration indicates that the SSB is associated with the TRP-RS via a second QCL type.

15. The communication device as claimed in claim 14, characterized in that, The SSB is either a single-frequency network SFN-SSB or a non-SFN-SSB.

16. The communication device as claimed in claim 14, characterized in that, During operation, the processor further performs the following operations: When the second QCL type includes QCL type C, at least one second parameter is determined to include Doppler frequency shift and average delay; and The TRP-RS is received by the transceiver based on the determined second parameter.

17. The communication device as claimed in claim 16, characterized in that, During operation, the processor further performs the following operations: When the second QCL type further includes QCL type D, it is determined that the second parameter further includes space reception parameters.

18. The communication device as claimed in claim 10, characterized in that, The TRP-RS is used for fine time / frequency (T / F) tracking and / or for beam measurement.

19. A communication method, comprising: The network node's processor transmits TRP-RS to the user equipment (UE). as well as The processor transmits a first configuration to the UE, wherein the first configuration indicates that the TRP-RS is associated with a second reference signal via a first QCL type.

20. The communication method as described in claim 19, characterized in that: The second reference signal includes at least one of PDSCH DM-RS, PDCCH DM-RS, CSI-RS, PUSCH, PUCCH and SRS, and the first QCL type includes QCL type A; The second reference signal includes at least one of the PDSCH DM-RS, the PDCCH DM-RS, the CSI-RS, the PUSCH, the PUCCH, and the SRS, and the first QCL type includes QCL type B; The second reference signal includes at least one of the PDSCH DM-RS, the PDCCH DM-RS, the CSI-RS, the PUSCH, the PUCCH, and the SRS, and the first QCL type includes QCL type A and QCL type D; The second reference signal includes at least one of the PDSCH DM-RS, the PDCCH DM-RS, the CSI-RS, the PUSCH, the PUCCH, and the SRS, and the first QCL type includes QCL type B and QCL type D; or The second reference signal includes at least one of the PUSCH, the PUCCH, and the SRS, and the first QCL type includes the spatial relationship of uplink transmissions.

21. The communication method as described in claim 19, characterized in that, Further includes: The processor sends an SSB to the UE, where the SSB is either an SFN-SSB or a non-SFN-SSB. as well as The processor transmits a second configuration, which indicates that the SSB is associated with the TRP-RS via a second QCL type.

22. The communication method as described in claim 21, characterized in that: The second QCL type includes QCL type C; or The second QCL type includes QCL type C and QCL type D.

23. The communication method as described in claim 19, characterized in that, The TRP-RS is used for T / F tracking or for beam measurement.

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