Method and apparatus for wireless communication

Abstract

Embodiments of the present disclosure relate to methods and devices for wireless communications. According to some embodiments of the present disclosure, a method includes: receiving signaling indicating configuration information about a set of aperiodic channel state information reference signal (CSI-RS) resources corresponding to a trigger state in downlink control information (DCI). The set of aperiodic CSI-RS resources may include multiple subsets of aperiodic CSI-RS resources; and receiving at least one aperiodic CSI-RS resource in the set of aperiodic CSI-RS resources according to the configuration information.

Description

Technical Field

[0001] Embodiments of the present disclosure relate generally to wireless communication techniques, and more particularly to resource configuration and measurement reporting in a wireless communication system. Background Art

[0002] Wireless communication systems are widely deployed to provide various telecommunication services, such as telephony, video, data, messaging, broadcast, etc. Wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of wireless communication systems may include fourth generation (4G) systems, such as long term evolution (LTE) systems, LTE advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems, which may also be referred to as new radio (NR) systems.

[0003] In order to expand the coverage and availability of wireless communication systems (e.g., 5G systems), satellites and high-altitude platforms can be used as relay devices in communications related to ground devices (e.g., user equipment (UE)). A network or network segment using radio frequency (RF) resources on a satellite or an aircraft in the air can be referred to as a non-terrestrial network (NTN). In an NTN, some or all functions of a base station (BS) can be deployed in a satellite or an aircraft in the air.

[0004] In wireless communication systems, a BS or satellite may be associated with multiple beams. Techniques for beam management in these wireless communication systems are desired. Additionally, techniques for measurement reporting (e.g., channel state information (CSI) reporting) in these wireless communication systems are also desired. Summary of the invention

[0005] An embodiment of the present disclosure provides a method. The method may include: receiving signaling indicating configuration information about a set of aperiodic channel state information reference signal (CSI-RS) resources corresponding to a trigger state in downlink control information (DCI). The set of aperiodic CSI-RS resources may include multiple subsets of aperiodic CSI-RS resources; and receiving at least one aperiodic CSI-RS resource in the set of aperiodic CSI-RS resources according to the configuration information.

[0006] In an embodiment of the present application, the configuration information may indicate a corresponding bandwidth part (BWP) index of each subset of the aperiodic CSI-RS resources. In an embodiment of the present application, the configuration information may indicate time domain offset information of each subset of the aperiodic CSI-RS resources. In an embodiment of the present application, the configuration information may indicate a first offset of a first subset of aperiodic CSI-RS resources among multiple subsets of the aperiodic CSI-RS resources. The first subset of the aperiodic CSI-RS resources may be closest to the DCI in the time domain among the multiple subsets of the aperiodic CSI-RS resources.

[0007] In an embodiment of the present application, the method may further include transmitting a CSI report indicating a reference signal received power (RSRP) value of the at least one aperiodic CSI-RS resource and an index of the at least one aperiodic CSI-RS resource.

[0008] In an embodiment of the present application, the method may further include switching to a first bandwidth part (BWP) to receive the at least one non-periodic CSI-RS resource triggered by the DCI in a second BWP; and after measuring the channel state information of multiple subsets of the non-periodic CSI-RS resources, switching back to the second BWP for information transmission or reception.

[0009] Another embodiment of the present disclosure provides a method. The method may include transmitting signaling indicating configuration information about a set of aperiodic channel state information reference signal (CSI-RS) resources corresponding to a trigger state in downlink control information (DCI), wherein the set of aperiodic CSI-RS resources may include multiple subsets of aperiodic CSI-RS resources; and transmitting at least one aperiodic CSI-RS resource in the set of aperiodic CSI-RS resources according to the configuration information.

[0010] In an embodiment of the present application, the configuration information may indicate a corresponding bandwidth part (BWP) index of each subset of the aperiodic CSI-RS resources. In an embodiment of the present application, the configuration information may indicate time domain offset information of each subset of the aperiodic CSI-RS resources. In an embodiment of the present application, the configuration information may indicate a first offset of a first subset of aperiodic CSI-RS resources among multiple subsets of the aperiodic CSI-RS resources, and the first subset of the aperiodic CSI-RS resources is closest to the DCI in the time domain among the multiple subsets of the aperiodic CSI-RS resources.

[0011] In an embodiment of the present application, the method may further include receiving a CSI report indicating a reference signal received power (RSRP) value of the at least one aperiodic CSI-RS resource and an index of the at least one aperiodic CSI-RS resource.

[0012] Another embodiment of the present application provides an apparatus. The apparatus includes: at least one non-transitory computer-readable medium having computer-executable instructions stored thereon; at least one receiving circuit system; at least one transmitting circuit system; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receiving circuit system, and the at least one transmitting circuit system. The computer-executable instructions cause the at least one processor to implement any of the methods mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To describe the manner in which the advantages and features of the present disclosure can be obtained, the description of the present disclosure is presented by reference to specific embodiments of the present disclosure illustrated in the accompanying drawings. These drawings depict only exemplary embodiments of the present disclosure and therefore should not be considered limiting of its scope.

[0014] Figure 1 is a schematic diagram illustrating an exemplary wireless communication system according to some embodiments of the present disclosure;

[0015] Figure 2 A schematic diagram illustrating an exemplary list of trigger states according to some embodiments of the present disclosure;

[0016] Figure 3 A schematic diagram illustrating an exemplary cell according to some embodiments of the present disclosure is illustrated;

[0017] Figure 4 A schematic diagram illustrating exemplary trigger states according to some embodiments of the present disclosure;

[0018] Figure 5 illustrating exemplary radio resource allocation according to some embodiments of the present disclosure;

[0019] Figure 6 A flowchart illustrating an exemplary process of wireless communication according to some embodiments of the present disclosure;

[0020] Figure 7 A flowchart illustrating an exemplary process of wireless communication according to some embodiments of the present disclosure; and

[0021] Figure 8 A block diagram illustrating an exemplary apparatus according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0022] The detailed description of the accompanying drawings is intended as a description of the preferred embodiments of the present disclosure, and is not intended to represent the only form in which the present disclosure can be practiced. It should be understood that the same or equivalent functions can be implemented by different embodiments intended to be included in the spirit and scope of the present disclosure.

[0023] Reference will now be made in detail to some embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. For ease of understanding, embodiments are provided under specific network architectures and new service scenarios (e.g., 3GPP 5G (NR), 3GPP LTE, etc.). It should be considered that, as network architectures and new service scenarios evolve, all embodiments in the present disclosure are also applicable to similar technical issues; and in addition, the terms cited in the present disclosure may change, which should not affect the principles of the present disclosure.

[0024] Figure 1 is a schematic diagram illustrating an exemplary wireless communication system 100 according to some embodiments of the present disclosure.

[0025] refer to Figure 1 , the wireless communication system 100 may include one or more UEs (e.g., UE 110), one or more BSs (e.g., BS 120), one or more radio access networks (RANs) (e.g., RAN 121), and one or more satellites (e.g., satellite 130). It should be considered that the wireless communication system 100 may include any number of UEs, BSs, satellites, networks, and / or network components.

[0026] BS 120 may be any type of device configured to wirelessly interface with at least one UE (e.g., UE 110) to facilitate access to one or more communication networks. For example, BS 120 may operate based on standard protocols such as Long Term Evolution (LTE), LTE Advanced (LTE-A), New Radio (NR), or other suitable protocols. For example, BS 120 may include an eNB or a gNB. Those skilled in the art will appreciate that, with the development of the Third Generation Partnership Project (3GPP) and communication technology, the terms used in this specification may change, which should not affect the principles of the present disclosure.

[0027] BS 120 may be part of RAN 121, which may also include other BSs and / or network elements (not shown), such as base station controllers (BSCs), radio network controllers (RNCs), and relay nodes. BS 120 may be configured to transmit and / or receive wireless signals in a specific geographic area, which may be referred to as a cell. Figure 1 (not shown in the figure). In some cases, the geographic area of ​​a base station may be divided into multiple sectors, each of which constitutes a portion of the geographic area. The term "cell" may refer to a portion of a geographic area (e.g., a sector).

[0028] RAN 121 can communicate with the core network ( Figure 1 The RAN 121 may employ one of various radio access technologies (RATs), such as an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) radio technology or a NR radio technology. The core network (CN) may include multiple core network components, such as a mobility management entity (MME) ( Figure 1 not shown) or Access and Mobility Management Function (AMF) ( Figure 1 The CN can be used to provide UE with access to the Public Switched Telephone Network (PSTN) and / or other networks ( Figure 1 Gateway (not shown).

[0029] UE 110 may be any type of device configured to operate and / or communicate in a wireless environment. For example, UE 110 may include a mobile station, a fixed or mobile subscriber unit, a pager, a cellular phone, a personal digital assistant, a smart phone, a laptop computer, a notebook computer, a personal computer, a wireless sensor, a consumer electronic product, a smart watch, etc. Those skilled in the art should understand that with the development and advancement of technology, the terms described in the present disclosure may change, but should not affect or limit the principles and spirit of the present disclosure.

[0030] Some or all of the functionality of a base station may be deployed in satellite 130. In some cases, satellite 130 may also be referred to as a base station. Figure 1 In some examples, satellite 130 may communicate with BS 120 and UE 110. In some examples, BS 120 may relay communications to UE 110 using satellite 130. In some examples, UE 110 may connect to a core network ( Figure 1 (not shown in the figure). The cell concept of a BS can be similarly applied to a satellite. For example, a satellite can generate a beam over a certain service area, which can be called a cell.

[0031] A base station (e.g., a satellite) may generate multiple beams. Therefore, a beam management process may be performed to, for example, mitigate interference between beams. Various reference signals (RSs) (e.g., channel state information (CSI) RSs (CSI-RSs)) may be used for beam management. Each CSI-RS (or CSI-RS resource) may correspond to a corresponding beam in a plurality of beams of a BS. The BS may establish a correspondence between each beam in a plurality of beams of the BS and a corresponding CSI-RS resource, and may allocate the CSI-RS resource according to the correspondence.

[0032] CSI-RS resources may be of different types, such as periodic, aperiodic, and semi-persistent. Different CSI-RS resources may be triggered in different ways. For example, the UE may be configured with at least one trigger state list (e.g., an aperiodic trigger state list) by the BS via high-level (e.g., radio resource control (RRC) layer) signaling. Each trigger state in the trigger state list may be configured to correspond to a set of CSI-RS resources. For example, the aperiodic trigger state list may be configured to correspond to a set of aperiodic CSI-RS (A-CSI-RS) resources.

[0033] The BS may transmit information about resource configuration of CSI-RS resources that may correspond to a beam of the BS to the UE. Each beam of the BS may be associated with a spatial domain filter. From the perspective of the UE, a downlink beam may be associated with a spatial domain receive filter, and an uplink beam may be associated with a spatial domain transmit filter.

[0034] The UE may receive a command (e.g., downlink control information (DCI)) from the BS to activate a trigger state. The UE may then receive a set of CSI-RS resources corresponding to the trigger state indicated in the DCI according to the resource configuration information. For example, the UE may perform channel measurement on the CSI-RS resources, and may transmit a measurement report (e.g., a CSI report) to the BS based on the CSI-RS resources. For an inactive downlink BWP, the CSI report may not be used to trigger the UE. In other words, in order to trigger a CSI report from the UE, the UE may need to receive the corresponding DCI and / or the corresponding CSI-RS on the active BWP.

[0035] The CSI may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a synchronization signal (SS) / physical broadcast channel (PBCH) block resource indicator (SSBRI), a layer indicator (LI), a rank indicator (RI), a layer 1 reference signal received power (L1-RSRP), or a layer 1 signal to interference plus noise ratio (L1-SINR).

[0036] Figure 2 A schematic diagram illustrating a list 200 of exemplary trigger states according to some embodiments of the present disclosure.

[0037] refer to Figure 2, the trigger state list 200 may include one or more trigger states (e.g., trigger state 210-1, trigger state 210-2, ... and trigger state 210-n). Each trigger state may be configured to correspond to a group of CSI-RS resources. For example, trigger state 210-1 may correspond to a group of CSI-RS resources including at least one CSI-RS resource (e.g., CSI-RS resource 220-1, CSI-RS resource 220-2, ... and CSI-RS resource 220-m). Trigger state 210-n may correspond to a group of CSI-RS resources including at least one CSI-RS resource (e.g., CSI-RS resource 221-1, ... and CSI-RS resource 221-o). In some embodiments of the present disclosure, the trigger state list 200 may be a non-periodic trigger state list. It should be considered that the trigger state list 200 may include any number of trigger states, and the trigger state may correspond to any number of CSI-RS resources.

[0038] In some embodiments of the present disclosure, each CSI-RS resource in a set of CSI-RS resources corresponding to a triggered state may correspond to a corresponding beam of the BS. In some embodiments of the present disclosure, each set of CSI-RS resources corresponding to a triggered state may be associated with a bandwidth part (BWP) index. In other words, all CSI-RS resources in this set of CSI-RS resources may be transmitted in the same BWP. In some embodiments of the present disclosure, a set of aperiodic CSI-RS resources corresponding to a triggered state may be configured with a trigger offset. The trigger offset may indicate an offset of the set of aperiodic CSI-RS resources from the DCI in the time domain, which triggers the aperiodic CSI-RS resources. In other words, the BS may transmit the CSI-RS resources in the set of aperiodic CSI-RS resources one by one based on the symbol-level time domain resource allocation for the aperiodic CSI-RS resources after the time indicated by the trigger offset transmitted from the DCI.

[0039] From the perspective of the UE, it can only receive and measure resources (e.g., CSI-RS resources) based on a limited number (e.g., 1) of beams (e.g., spatial domain receive filters) based on the UE's capabilities. Therefore, the UE may need to perform reception and measurement related to different beams on different time domain resources. From the perspective of the BS, since the beams generated simultaneously are larger than the beams generated by the UE, it can use the same time domain resources to transmit data to different UEs or receive data from different UEs (e.g., physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH)) via different beams.

[0040] In order to mitigate interference between multiple beams generated by a base station (e.g., a satellite), different beams may be associated with different frequency domain resources. In some embodiments of the present disclosure, different frequency domain resource allocations may be implemented by adopting multiple BWPs or multiple cells. For example, different beams of a base station may be associated with different BWPs. In order to reduce the delay caused by the change of frequency domain resources (e.g., BWP), some of the multiple beams of a base station or a satellite may be associated with the same BWP. In other words, one or more beams of a base station may be associated with a BWP, and another or some other beams of the base station may be associated with another different BWP.

[0041] In addition, to promote flexibility in resource allocation and avoid conflicts between different resources (e.g., between CSI-RS resources and other resources), different beams to the UE may be associated with different time domain resource allocations (e.g., different time domain trigger offsets).

[0042] Figure 3 Schematic diagram illustrating an exemplary cell 300 of a base station (e.g., a satellite) according to some embodiments of the present disclosure. The base station may use multiple beams to perform wireless communications with a UE. Figure 3 In FIG. 3 , there are seven beams (eg, beam 310-0 through beam 310-6) for cell 300. It is contemplated that cell 300 may include any number of beams.

[0043] As mentioned above, it would be beneficial to associate different beams with different frequency domain resources. Figure 3 As shown in , BWP 320-0, BWP 320-1, and BWP 320-2 may be allocated at different locations in the frequency domain. It may be beneficial for different beams of cell 300 to be associated with different BWPs. For example, it may be beneficial for beam 310-0 to be allocated in BWP 320-2, beam 310-1, beam 310-3, and beam 310-5 to be allocated in BWP 320-0, and beam 310-2, beam 310-4, and beam 310-6 to be allocated in BWP 320-1. In this case, the CSI-RS resources corresponding to beam 310-0 can be transmitted on BWP 320-2, the CSI-RS resources corresponding to beam 310-1, beam 310-3 and beam 310-5 can be transmitted on BWP 320-0, and the CSI-RS resources corresponding to beam 310-2, beam 310-4 and beam 310-6 can be transmitted on BWP 320-1.

[0044] It would also be beneficial to associate different beams with different time domain resource allocations. For example, the CSI-RS resources corresponding to beam 310-0, the CSI-RS resources corresponding to beams 310-1, 310-3, and 310-5, and the CSI-RS resources corresponding to beams 310-2, 310-4, and 310-6 may be configured with different trigger offsets.

[0045] When the beams of the base station are configured to be associated with different BWPs, the UE may need to perform switching between different BWPs to perform measurements (e.g., L1-RSRP measurements). Switching between different BWPs may need to take into account BWP switching delays. For example, a BWP may correspond to a subcarrier space (SCS). Different BWPs may correspond to different SCSs or the same SCS. In some embodiments of the present disclosure, the BWP switching delay may be expressed in terms of the number of time slots. Table 1 below shows examples of BWP switching delays for different subcarrier spaces (SCS) configurations. It should be understood that Table 1 is for illustrative purposes only and should not be construed as limiting embodiments of the present disclosure.

[0046] Table 1

[0047]

[0048] In the above table, μ may indicate SCS. For example, "μ = 0" may indicate an SCS of 15 kHz (e.g., SCS0), "μ = 1" may indicate an SCS of 30 kHz (e.g., SCS1), "μ = 2" may indicate an SCS of 60 kHz (e.g., SCS2), and "μ = 3" may indicate an SCS of 120 kHz (e.g., SCS3). Type 1 and Type 2 may represent different UE capabilities, which may be reported by the UE to the BS.

[0049] In some cases, the SCS of a BWP before the BWP switching may be the same as or different from the SCS of another BWP after the BWP switching. For example, according to the above table, if a Type 1 UE switches from a BWP corresponding to an SCS (e.g., SCS0) to another BWP corresponding to the same SCS (e.g., SCS0), the BWP switching delay may be expressed as one time slot with respect to SCS0.

[0050] In some embodiments of the present disclosure, when the SCS of a BWP before the BWP switching is different from the SCS of another BWP after the BWP switching, the BWP switching delay may be determined according to the number of time slots corresponding to the larger SCS between the SCS before the BWP switching and the other SCS after the BWP switching. For example, according to the above table, if a type 2 UE switches from a BWP corresponding to SCS0 to a BWP corresponding to SCS1, the BWP switching delay may be 5 time slots (i.e., the larger of 3 time slots and 5 time slots) with respect to SCS1. If a type 2 UE switches from a BWP corresponding to SCS1 to another BWP corresponding to SCS0, the BWP switching delay may be 5 time slots (i.e., the larger of 3 time slots and 5 time slots) with respect to SCS1.

[0051] In order to achieve the frequency domain resource allocation mentioned above when the beams of the base station are associated with different BWPs, the trigger state can trigger the measurement report of different beams in different BWPs, and the trigger offset can be configured according to the BWP. Figure 3 In the configuration shown in , all CSI-RS resources in a set of CSI-RS resources corresponding to a triggering state can be transmitted in the same BWP and can be configured with the same triggering offset. Figure 3 The configuration in implements the frequency domain resource allocation mentioned above. In addition, when the beams of the base station are associated with different time domain trigger offsets, by Figure 3 The configuration in cannot achieve the time domain resource allocation mentioned above.

[0052] Figure 4 Schematic diagram illustrating an exemplary trigger state 400 according to some embodiments of the present disclosure. The trigger state 400 may be Figure 2 One of the trigger states in the trigger state list 200 shown in . Figure 4 The configuration shown in can be used to implement the above-mentioned frequency domain resource allocation or the above-mentioned time domain resource allocation.

[0053] refer to Figure 4, the trigger state 400 may be configured to correspond to a set of CSI-RS resources 410, which includes at least one CSI-RS resource (e.g., CSI-RS resource 420-0, CSI-RS resource 420-1, CSI-RS resource 420-2, CSI-RS resource 420-3, CSI-RS resource 420-4, CSI-RS resource 420-5, and CSI-RS resource 420-6). The set of CSI-RS resources may be divided into at least one subset of CSI-RS resources (e.g., subset 430-0 of CSI-RS resources, subset 430-1 of CSI-RS resources, and subset 430-2 of CSI-RS resources), each of which may include at least one CSI-RS resource. For example, subset 430-0 of CSI-RS resources may include CSI-RS resource 420-1, CSI-RS resource 420-3, and CSI-RS resource 420-5, subset 430-1 of CSI-RS resources may include CSI-RS resource 420-2, CSI-RS resource 420-4, and CSI-RS resource 420-6, and subset 430-2 of CSI-RS resources may include CSI-RS resource 420-0. It should be considered that a set of CSI-RS resources corresponding to a trigger state may include any number of subsets of CSI-RS resources, each of which may include any number of CSI-RS resources.

[0054] The following will be combined Figure 3 and 5 The configuration of the set of CSI-RS resources 410 is described. Figure 5 An exemplary radio resource allocation 500 according to some embodiments of the present disclosure is illustrated. Figure 5 In the example, the BS may transmit information about radio resources (eg, corresponding to Figure 4 A set of CSI-RS resources 410 for the trigger state 400 shown in ( Figure 5 The UE may then receive a trigger state (e.g., Figure 4 , and may receive a set of CSI-RS resources (eg, the set of CSI-RS resources 410) corresponding to the trigger state from the BS according to the configuration information, such as Figure 5 As shown in .

[0055] Return to reference Figure 4In some embodiments of the present disclosure, the group of CSI-RS resources 410 may be configured to be associated with one BWP index. In other words, all subsets of CSI-RS resources in the same group of CSI-RS resources may be associated with the same BWP index. In this case, the configuration information about the group of CSI-RS resources 410 may indicate one BWP index.

[0056] In some embodiments of the present disclosure, each subset of CSI-RS resources in the set of CSI-RS resources 410 may be configured to be associated with a corresponding BWP index. In these embodiments, the configuration information about the set of CSI-RS resources 410 may indicate the corresponding BWP index of each subset of aperiodic CSI-RS resources.

[0057] For example, refer to Figure 5 , BWP 550-0, BWP 550-1, and BWP 550-2 may be allocated at different positions in the frequency domain and may correspond to different SCSs (for example, SCSs of 15 kHz, SCSs of 30 kHz, and SCSs of 60 kHz, respectively). Figure 5 , the BS may determine to transmit the subset 430-0 of CSI-RS resources, the subset 430-1 of CSI-RS resources, and the subset 430-2 of CSI-RS resources in BWP 550-0, BWP 550-1, and BWP 550-2, respectively. In this case, the configuration information about the set of CSI-RS resources 410 may indicate an index of BWP 550-0 (e.g., BWP#0) for the subset 430-0 of CSI-RS resources, an index of BWP 550-1 (e.g., BWP#1) for the subset 430-1 of CSI-RS resources, and an index of BWP 550-2 (e.g., BWP#2) for the subset 430-2 of CSI-RS resources.

[0058] Figure 5 BWP 550-0, BWP 550-1 and BWP 550-2 can be Figure 3 BWP 320-0, BWP 320-1 and BWP 320-2 in Figure 5 The CSI-RS resources 420-0 to 420-6 in the may correspond to the beams 310-0 to 310-6, respectively. The interference between the beams 310-0 to 310-6 may be mitigated based on the above resource configuration.

[0059] Return to reference Figure 4In some embodiments of the present disclosure, the group of CSI-RS resources 410 may be a group of aperiodic CSI-RS (A-CSI-RS) resources. In some embodiments of the present disclosure, each subset of aperiodic CSI-RS resources of the group of CSI-RS resources 410 (e.g., each subset of CSI-RS resources 430-1 to 430-2) may be configured with corresponding time domain offset information. Configuration information about the group of CSI-RS resources 410 may indicate the time domain offset information of each subset of aperiodic CSI-RS resources.

[0060] In some embodiments of the present disclosure, the time domain offset information of the subset of aperiodic CSI-RS resources may indicate the number of time slots between the DCI triggering the set of CSI-RS resources and the subset of aperiodic CSI-RS resources with respect to the SCS. In these embodiments, different subsets of aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources may be associated with the same or different BWP indexes.

[0061] In some embodiments of the present disclosure, the SCS may be implicitly configured. For example, in some embodiments of the present disclosure, the SCS may be predefined for a frequency range. For example, referring to Figure 5 , assuming that for a communication system having an operating frequency within a frequency range between 450 MHz and 6000 MHz, the SCS may be predefined as 15 kHz, the time domain offset information of the subset 430-0 of the CSI-RS resources may indicate a trigger offset 571 regarding the predefined SCS of 15 kHz, the time domain offset information of the subset 430-1 of the CSI-RS resources may indicate a trigger offset 572 regarding the predefined SCS of 15 kHz, and the time domain offset information of the subset 430-2 of the CSI-RS resources may indicate a trigger offset 573 regarding the predefined SCS of 15 kHz.

[0062] exist Figure 5 , the number of time slots between DCI 540 and the subset 430-0 of CSI-RS resources with respect to the SCS (e.g., 15 kHz) of BWP 550-0 is 3 time slots, the number of time slots between DCI 540 and the subset 430-1 of CSI-RS resources with respect to the SCS (e.g., 15 kHz) of BWP 550-0 is 8 time slots, and the number of time slots between DCI 540 and the subset 430-2 of CSI-RS resources with respect to the SCS (e.g., 30 kHz) of BWP 550-1 is 17 time slots. In this case, trigger offset 571 may be configured as 3 time slots, trigger offset 572 may be configured as 8 time slots, and trigger offset 573 may be configured as 8.5 time slots.

[0063] In some embodiments of the present disclosure, the SCS corresponding to the time domain offset information of the subset of aperiodic CSI-RS resources may be based on the SCS of the BWP carrying the subset of aperiodic CSI-RS resources (hereinafter referred to as "the SCS of the BWP after the BWP switching"). In some embodiments of the present disclosure, the SCS corresponding to the time domain offset information of the subset of aperiodic CSI-RS resources may be based on the SCS of the BWP of the previous subset of aperiodic CSI-RS resources carrying the subset of aperiodic CSI-RS resources or the SCS of the BWP carrying DCI (hereinafter referred to as "the SCS of the BWP before the BWP switching").

[0064] For example, refer to Figure 5 , since DCI 540 is transmitted in the same BWP (i.e., BWP 550-0) as the subset of CSI-RS resources 430-0, a BWP switching procedure may not be performed at the UE when receiving the subset of CSI-RS resources 430-0. However, the SCS of BWP 550-0 may be considered as a special case of "SCS of a BWP before BWP switching" or "SCS of a BWP after BWP switching".

[0065] exist Figure 5 , the number of time slots between DCI 540 and the subset 430-0 of CSI-RS resources regarding the SCS of BWP 550-0 (e.g., 15kHz) is 3 time slots, the number of time slots between DCI 540 and the subset 430-1 of CSI-RS resources regarding the SCS of BWP 550-0 (e.g., 15kHz) is 8 time slots, and the number of time slots between DCI 540 and the subset 430-2 of CSI-RS resources regarding the SCS of BWP 550-1 (e.g., 30kHz) is 17 time slots.

[0066] In some examples, it may be predefined that the SCS of the time domain offset information corresponding to the subset of the non-periodic CSI-RS resources may be based on the SCS of the BWP before the BWP switching. In these examples, the time domain offset information of the subset of CSI-RS resources 430-0 may indicate a trigger offset 571 with respect to the SCS of the BWP 550-0 (e.g., 15 kHz), the time domain offset information of the subset of CSI-RS resources 430-1 may indicate a trigger offset 572 with respect to the SCS of the BWP 550-0 (e.g., 15 kHz), and the time domain offset information of the subset of CSI-RS resources 430-2 may indicate a trigger offset 573 with respect to the SCS of the BWP 550-1 (e.g., 30 kHz). The trigger offset 571 may be configured as 3 time slots, the trigger offset 572 may be configured as 8 time slots, and the trigger offset 573 may be configured as 17 time slots.

[0067] In some examples, it may be predefined that the SCS of the time domain offset information corresponding to the subset of the non-periodic CSI-RS resources may be based on the SCS of the BWP after the BWP switching. In these examples, the time domain offset information of the subset of CSI-RS resources 430-0 may indicate a trigger offset 571 with respect to the SCS of BWP 550-0 (e.g., 15 kHz), the time domain offset information of the subset of CSI-RS resources 430-1 may indicate a trigger offset 572 with respect to the SCS of BWP 550-1 (e.g., 30 kHz), and the time domain offset information of the subset of CSI-RS resources 430-2 may indicate a trigger offset 573 with respect to the SCS of BWP 550-2 (e.g., 60 kHz). The trigger offset 571 may be configured as 3 time slots, the trigger offset 572 may be configured as 16 time slots, and the trigger offset 573 may be configured as 34 time slots.

[0068] Return to reference Figure 4 In some embodiments of the present disclosure, the SCS may be explicitly configured. For example, the SCS may be configured by radio resource control (RRC) signaling, which may be a message that is the same as or different from a message used to configure a set of CSI-RS resources. For example, the BS may transmit RRC signaling indicating both the time domain offset information and the SCS corresponding to the time domain offset information to the UE. In some instances, the BS may transmit the time domain offset information to the UE via RRC signaling, and may transmit the SCS corresponding to the time domain offset information in another RRC signaling. The SCS may be configured according to a subset of the CSI-RS resources or the group of CSI-RS resources.

[0069] In some embodiments of the present disclosure, the time domain offset information may be based on the BWP switching delay. Figure 5 , a UE (e.g., a type 2 UE) may switch from a BWP 550-0 having an SCS of 15 kHz to a BWP 550-1 having an SCS of 30 kHz to receive a subset 430-1 of CSI-RS resources from a BS. According to Table 1, for a type 2 UE, a BWP switching delay from BWP 550-0 to BWP 550-1 may be 5 time slots with respect to 30 kHz. The BS may determine that an offset in the time domain between a previous subset of CSI-RS resources 430-1 (e.g., subset 430-0 of CSI-RS resources) and subset 430-1 of CSI-RS resources may be greater than, equal to, or slightly less than 5 time slots. Assuming that a trigger offset of subset 430-0 of CSI-RS resources is configured as 3 time slots, a trigger offset of subset 430-1 of CSI-RS resources may be configured as, for example, 8 time slots with respect to 30 kHz, taking into account a 5 time slot BWP switching delay.

[0070] Return to reference Figure 4In some embodiments of the present disclosure, configuration information of a group of CSI-RS resources 410 may indicate an offset of a specific subset of aperiodic CSI-RS resources of the group of CSI-RS resources 410 (hereinafter referred to as a "baseline subset"). In at least one subset of aperiodic CSI-RS resources of the group of CSI-RS resources 410, the specific subset of aperiodic CSI-RS resources may be closest to the DCI that triggers the group of CSI-RS resources 410 in the time domain. The baseline offset may be a triggering offset of the specific subset of aperiodic CSI-RS resources with respect to an SCS (hereinafter referred to as a "baseline SCS"). In other words, the baseline offset may indicate the number of time slots between the DCI and the specific subset of aperiodic CSI-RS resources with respect to the baseline SCS. In these embodiments, different subsets of aperiodic CSI-RS resources in the group of aperiodic CSI-RS resources may be associated with the same or different BWP indexes.

[0071] In some embodiments of the present disclosure, a baseline SCS may be predefined for a frequency range. In other words, the baseline offset may be based on the SCS predefined for the frequency range. Figure 5 , the specific subset of non-periodic CSI-RS resources may be the subset 430-0 of CSI-RS resources. Assuming that for a communication system having an operating frequency in a frequency range between 450 MHz and 6000 MHz, the baseline SCS may be predefined as 30 kHz, and the configuration information about the group of CSI-RS resources 410 may indicate a baseline offset about 30 kHz. Figure 5 In FIG. 5 , the number of time slots of the SCS (eg, 15 kHz) between the DCI 540 and the subset 430 - 0 of the CSI-RS resources with respect to the BWP 550 - 0 is 3 time slots. In this case, the baseline offset may be configured as 6 time slots.

[0072] In some embodiments of the present disclosure, the baseline SCS may be predefined as the SCS of the BWP carrying the DCI that triggers the multiple subsets of the aperiodic CSI-RS resources. In other words, the baseline offset may be based on the SCS of the BWP carrying the DCI that triggers the multiple subsets of the aperiodic CSI-RS resources. For example, referring to Figure 5 , the SCS of the BWP (e.g., BWP 550-0) carrying DCI 540 is 15 kHz. The configuration information about the set of CSI-RS resources 410 may indicate a baseline offset of 15 kHz. In this case, the baseline offset may be configured as 3 time slots.

[0073] In some embodiments of the present disclosure, the baseline SCS may be predefined as the SCS of the BWP carrying a specific subset of non-periodic CSI-RS resources. In other words, the baseline offset may be based on the SCS of the BWP carrying a specific subset of non-periodic CSI-RS resources. For example, referring to Figure 5 , the SCS of the BWP (e.g., BWP550-0) carrying the subset 430-0 of CSI-RS resources is 15 kHz. The configuration information about the set of CSI-RS resources 410 may indicate a baseline offset of 15 kHz. In this case, the baseline offset may be configured as 3 time slots.

[0074] The UE may determine a trigger offset for each subset of aperiodic CSI-RS resources of a set of CSI-RS resources based on the baseline offset. The BS may perform a similar process to determine a trigger offset for each of the subsets of aperiodic CSI-RS resources of the set of CSI-RS resources, and may transmit the CSI-RS resources according to the determined trigger offset.

[0075] For example, in some embodiments of the present disclosure, the UE may determine the trigger offset of a subset of non-periodic CSI-RS resources in the following manner: determine an offset in the time domain between the subset of non-periodic CSI-RS resources and a previous subset of non-periodic CSI-RS resources, and may determine the trigger offset of the subset of non-periodic CSI-RS resources based on the baseline offset and the determined offset.

[0076] For example, refer to Figure 5 , the UE may determine the baseline offset as a triggering offset (e.g., triggering offset 571) for the subset 430-0 of the aperiodic CSI-RS. The UE may determine an offset (e.g., offset 575) between the subset 430-0 of the aperiodic CSI-RS and a subsequent subset (e.g., aperiodic CSI-RS 430-1) of the aperiodic CSI-RS 430-0. The UE may determine a triggering offset (e.g., triggering offset 572) for the aperiodic CSI-RS 430-1 based on the baseline offset and the offset 575. Then, the UE may determine an offset (e.g., offset 576) between the subset 430-1 of the aperiodic CSI-RS and a subsequent subset (e.g., aperiodic CSI-RS 430-2) of the aperiodic CSI-RS 430-0. The UE may determine a triggering offset (eg, triggering offset 573 ) for the aperiodic CSI-RS 430 - 2 based on the baseline offset and the offset 576 .

[0077] In some embodiments of the present disclosure, the offset in the time domain between two adjacent subsets of aperiodic CSI-RS resources (e.g., Figure 5The offset 575 or the offset 576 in the frequency range may be based on a predefined SCS for the frequency range. Figure 5 , assuming that for a communication system having an operating frequency in a frequency range between 450 MHz and 6000 MHz, the SCS may be predefined as 15 kHz, and the UE may determine an offset 575 and an offset 576 with respect to the predefined SCS of 15 kHz.

[0078] In some embodiments of the present disclosure, the offset in the time domain between two adjacent subsets of aperiodic CSI-RS resources (e.g., Figure 5 The offset 575 or the offset 576 in the above example may be based on the SCS of the BWP of the DCI that carries the triggering group of aperiodic CSI-RS resources. Figure 5 , the SCS of the BWP (eg, BWP 550-0) carrying DCI 540 is 15 kHz. The UE may determine offset 575 and offset 576 with respect to 15 kHz.

[0079] In some embodiments of the present disclosure, the offset in the time domain between two adjacent subsets of aperiodic CSI-RS resources (e.g., Figure 5 The offset 575 or the offset 576 in may be based on the SCS of the BWP of either of the two adjacent subsets carrying the non-periodic CSI-RS.

[0080] In some examples, the offset may be based on the SCS of the BWP of the previous subset of aperiodic CSI-RS resources carrying two adjacent subsets of aperiodic CSI-RS. Figure 5 , the SCS of the BWP (e.g., BWP 550-0) carrying the subset 430-0 of CSI-RS resources is 15 kHz, the SCS of the BWP (e.g., BWP 550-1) carrying the subset 430-1 of CSI-RS resources is 30 kHz, and the SCS of the BWP (e.g., BWP 550-2) carrying the subset 430-2 of CSI-RS resources is 60 kHz. The UE may determine an offset 575 with respect to 15 kHz, and may determine an offset 576 with respect to 30 kHz.

[0081] In some examples, the offset may be based on the SCS of the BWP of the subsequent subset of aperiodic CSI-RS resources carrying two adjacent subsets of aperiodic CSI-RS. Figure 5 , the UE may determine an offset 575 with respect to 30 kHz and may determine an offset 576 with respect to 60 kHz.

[0082] In some embodiments of the present disclosure, the offset in the time domain between two adjacent subsets of aperiodic CSI-RS resources (e.g., Figure 5The offset 575 or the offset 576 in the BWP switching delay may be based on the BWP switching delay. The BWP switching delay may be associated with the SCS of the BWP carrying either of the two adjacent subsets of the aperiodic CSI-RS. For example, the BWP switching delay may be determined according to the number of time slots corresponding to the larger SCS between the SCSs of the BWPs of the two adjacent subsets carrying the aperiodic CSI-RS.

[0083] For example, it is assumed that the offset between two adjacent subsets of aperiodic CSI-RS resources in the predefined time domain is determined based on the SCS of the BWP of the subsequent subset of aperiodic CSI-RS resources carrying the two adjacent subsets of aperiodic CSI-RS. Figure 5 , the UE (e.g., type 2 UE) may determine an offset 575 of the SCS of the BWP (e.g., BWP 550-1) carrying the subset 430-1 of CSI-RS resources, and may determine an offset 576 of the SCS of the BWP (e.g., BWP 550-2) carrying the subset 430-2 of CSI-RS resources. BWP 550-1 has an SCS of 30 kHz, and BWP 550-2 has an SCS of 60 kHz. In this case, the UE may determine the offset 575 of 30 kHz, and may determine the offset 576 of 60 kHz.

[0084] According to Table 1, for type 2 UEs, the BWP switching delay from 15kHz to 30kHz may be 5 time slots with respect to 30kHz (i.e., the larger SCS between 15kHz and 30kHz). The UE may determine the offset 575 based on the BWP switching delay from 15kHz to 30kHz. For example, the UE may determine the offset 575 as 5 time slots with respect to 30kHz. Then, the UE may determine the trigger offset 572 of the subset 430-1 of the CSI-RS resources based on the configured baseline offset and the offset 575. Assuming that the baseline offset is configured as 3 time slots with respect to the SCS of the BWP (e.g., BWP 550-0) carrying the DCI 540, the baseline offset is 3 time slots with respect to 15kHz, and the trigger offset 572 may be 8 time slots with respect to 30kHz (i.e., 3 time slots + 5 time slots).

[0085] According to Table 1, for type 2 UEs, the BWP switching delay from 30kHz to 60kHz may be 9 slots about 60kHz (i.e., the larger SCS between 30kHz and 60kHz). The UE may determine the offset 576 based on the BWP switching delay from 30kHz to 60kHz. For example, the UE may determine the offset 576 as 9 slots about 60kHz. The UE may then determine the trigger offset 573 for the subset 430-2 of CSI-RS resources based on the configured baseline offset and the offset 576. Assuming that the baseline offset is configured as 3 slots relative to the SCS of the BWP (e.g., BWP 550-0) carrying the DCI 540, the baseline offset is 3 slots about 15kHz, and the trigger offset 572 may be 17 slots about 60kHz (i.e., 3 slots + 5 slots + 9 slots).

[0086] In some embodiments of the present disclosure, an offset in the time domain between two adjacent subsets of aperiodic CSI-RS resources may be predefined. For example, the predefined offset may be based on the maximum BWP switching delay. According to Table 1, the maximum BWP switching delay of type 2 UE is 18 time slots. Type 2 UE may determine the offset in the time domain between two adjacent subsets of aperiodic CSI-RS resources to be 18 time slots.

[0087] refer to Figure 5 After receiving and measuring a set of CSI-RS resources (e.g., the set of CSI-RS resources 410), the UE may transmit a CSI report indicating the measurement of at least one CSI-RS resource of the set of CSI-RS resources 410 to the BS. For example, the UE may switch back to the BWP (e.g., BWP 550-0) carrying the DCI 540 to transmit the CSI report via, for example, a physical uplink shared channel (PUSCH) resource 560 within time slot 51. Alternatively, the UE may switch to an uplink (UL) BWP indicated by the DCI 540 to transmit the CSI report via a physical uplink control channel (PUCCH) or PUSCH. For example, the CSI report may indicate an RSRP value (e.g., an L1-RSRP value) of the at least one CSI-RS resource and an index of the at least one CSI-RS resource. The CSI report may also indicate at least one of a CQI, a PMI, a CRI, a SSBRI, a LI, or a RI.

[0088] In some embodiments of the present disclosure, the UE may index the CSI-RS resources in the group of CSI-RS resources 410 in the following order: first, in the increasing order of the CSI-RS resources within a subset of the CSI-RS resources; then, in the increasing order of the subset index of the subset of the CSI-RS resources of the group of CSI-RS resources 410.

[0089] For example, refer to Figure 5 , assuming that the subset indexes of the subset 430-0 of CSI-RS resources, the subset 430-1 of CSI-RS resources, and the subset 430-2 of CSI-RS resources can be configured or indexed as "0", "1", and "2", respectively, the CSI-RS resources 420-1, CSI-RS resources 420-3, and CSI-RS resources 420-5 in the subset 430-0 of CSI-RS resources can be indexed as "0", "1", and "2", respectively. The CSI-RS resources 420-2, CSI-RS resources 420-4, and CSI-RS resources 420-6 in the subset 430-1 of CSI-RS resources can be indexed as "3", "4", and "5", respectively. The CSI-RS resource 420-0 in the subset 430-3 of CSI-RS resources can be indexed as "6". In order to report the RSRP value of the CSI-RS resource 420 - 5 , the CSI report may report a CRI (CSI-RS resource indicator) indicating an index “2” having an RSRP value.

[0090] In some embodiments of the present disclosure, the UE may index the CSI-RS resources in the set of CSI-RS resources 410 in the following order: for each subset of CSI-RS resources in the set of CSI-RS resources 410, in increasing order of the CSI-RS resources within the corresponding subset of CSI-RS resources. In these embodiments, the CSI report may further indicate a subset index of the subset of CSI-RS resources to which the at least one CSI-RS resource belongs.

[0091] For example, refer to Figure 5 , assuming that the subset indexes of the subset 430-0 of CSI-RS resources, the subset 430-1 of CSI-RS resources, and the subset 430-2 of CSI-RS resources can be configured or indexed as "0", "1", and "2", respectively, the CSI-RS resources 420-1, CSI-RS resources 420-3, and CSI-RS resources 420-5 in the subset 430-0 of CSI-RS resources can be indexed as "0", "1", and "2", respectively. The CSI-RS resources 420-2, CSI-RS resources 420-4, and CSI-RS resources 420-6 in the subset 430-1 of CSI-RS resources can be indexed as "0", "1", and "2", respectively. The CSI-RS resource 420-0 in the subset 430-3 of CSI-RS resources can be indexed as "0". To report the RSRP value of the CSI-RS resource 420 - 3 , the CSI report may report a CRI indicating an index “1” and a subset index (eg, “0”) of the subset 430 - 0 of the CSI-RS resources having the RSRP value.

[0092] In some embodiments of the present disclosure, when each subset of CSI-RS resources in the group of CSI-RS resources 410 is configured to be associated with a corresponding BWP index, the UE may index the CSI-RS resources in the group of CSI-RS resources 410 in the following order: first, in increasing order of the CSI-RS resources within the subset of CSI-RS resources; then, in increasing order of the BWP indexes of the subsets of the CSI-RS resources in the group of CSI-RS resources 410.

[0093] For example, refer to Figure 5 , assuming that the BWP indexes of BWP 550-0, BWP 550-1, and BWP 550-2 may be configured as “0,” “1,” and “2,” respectively, the CSI-RS resource 420-1, the CSI-RS resource 420-3, and the CSI-RS resource 420-5 in the subset 430-0 of CSI-RS resources may be indexed as “0,” “1,” and “2,” respectively. The CSI-RS resource 420-2, the CSI-RS resource 420-4, and the CSI-RS resource 420-6 in the subset 430-1 of CSI-RS resources may be indexed as “3,” “4,” and “5,” respectively. The CSI-RS resource 420-0 in the subset 430-3 of CSI-RS resources may be indexed as “6.” In order to report the RSRP value of the CSI-RS resource 420-5, the CSI report may report a CRI (CSI-RS resource indicator) indicating an index “2” with an RSRP value.

[0094] In some embodiments of the present disclosure, when each subset of CSI-RS resources in the set of CSI-RS resources 410 is configured to be associated with a corresponding BWP index, the UE may index the CSI-RS resources in the set of CSI-RS resources 410 in the following order: for each subset of CSI-RS resources in the set of CSI-RS resources 410, in increasing order of the CSI-RS resources within the corresponding subset of CSI-RS resources. In these embodiments, the CSI report may further indicate the BWP index of the subset of CSI-RS resources to which the at least one CSI-RS resource belongs.

[0095] For example, refer to Figure 5, assuming that the BWP indexes of BWP 550-0, BWP 550-1, and BWP 550-2 may be configured as “0,” “1,” and “2,” respectively, CSI-RS resource 420-1, CSI-RS resource 420-3, and CSI-RS resource 420-5 in subset 430-0 of CSI-RS resources may be indexed as “0,” “1,” and “2,” respectively. CSI-RS resource 420-2, CSI-RS resource 420-4, and CSI-RS resource 420-6 in subset 430-1 of CSI-RS resources may be indexed as “0,” “1,” and “2,” respectively. CSI-RS resource 420-0 in subset 430-3 of CSI-RS resources may be indexed as “0.” To report the RSRP value of the CSI-RS resource 420 - 3 , the CSI report may report a CRI indicating an index of “1” and a BWP index (eg, “0”) of the CSI-RS resource subset 430 - 0 having the RSRP value.

[0096] The BS may perform a similar process to index the CSI-RS resources in the set of CSI-RS resources 410 so that the BS knows which CSI-RS resource the index in the CSI report indicates.

[0097] In some embodiments of the present disclosure, after receiving and measuring the set of CSI-RS resources 410, the UE may switch back to the BWP (eg, BWP 550-0) carrying the DCI 540 for information transmission or reception. For example, the UE may switch back to BWP 550-0 to monitor another DCI.

[0098] Figure 6 Flowchart illustrating an exemplary process 600 for wireless communication according to some embodiments of the present disclosure. The process may be performed by a communication device (eg, a UE). The communication device may be, for example, Figure 1 UE 110 shown in .

[0099] refer to Figure 6 In operation 611, the communication device may receive signaling indicating configuration information about a set of CSI-RS resources (e.g., aperiodic CSI-RS resources) corresponding to a trigger state in the DCI. The set of CSI-RS resources may include multiple subsets of CSI-RS resources. The configuration information about the set of CSI-RS resources may be based on the above description of Figures 1 to 5 Determined by one of the methods described.

[0100] In operation 613, the communication device may receive at least one CSI-RS resource in the group of CSI-RS resources according to the configuration information.

[0101] In some embodiments of the present disclosure, the communication device may transmit a CSI report indicating an RSRP value of at least one CSI-RS resource and an index of at least one CSI-RS resource. In some embodiments of the present disclosure, the CSI report may further indicate a subset index or a BWP index of a subset of aperiodic CSI-RS resources to which the at least one aperiodic CSI-RS resource belongs. The index of the at least one CSI-RS resource may be based on the above description of Figures 1 to 5 Determined by one of the methods described.

[0102] In some embodiments of the present disclosure, the communication device may switch to a BWP to receive at least one CSI-RS resource triggered by DCI in another BWP. After measuring the channel state information of multiple subsets of CSI-RS resources, the communication device may switch back to another BWP for information transmission or reception.

[0103] Figure 7 Flowchart illustrating an exemplary process 700 of wireless communication according to some embodiments of the present disclosure. The process may be performed by a base station side device (eg, a BS or a satellite). The base station side device may be, for example, Figure 1 BS 120 or satellite 130 shown in FIG.

[0104] refer to Figure 7 At the beginning, the base station side device may allocate the group of CSI-RS resources (e.g., non-periodic CSI-RS resources) corresponding to the trigger state in the DCI according to the configuration information about a group of CSI-RS resources. The group of CSI-RS resources may include multiple subsets of CSI-RS resources. The configuration information may be based on the above Figures 1 to 5 The configuration information may implement the preferred frequency domain resource allocation or the preferred time domain resource allocation mentioned above.

[0105] In operation 711, the base station side device may transmit signaling indicating configuration information. In operation 713, the base station side device may transmit at least one CSI-RS resource in the group of CSI-RS resources according to the configuration information.

[0106] In some embodiments of the present disclosure, the base station side device may receive a CSI report indicating an RSRP value of at least one CSI-RS resource and an index of at least one CSI-RS resource. In some embodiments of the present disclosure, the CSI report may further indicate a subset index or a BWP index of an aperiodic CSI-RS resource subset to which the at least one aperiodic CSI-RS resource belongs. The index of the at least one CSI-RS resource may be based on the above description of Figures 1 to 5 Determined by one of the methods described.

[0107] Figure 8A block diagram illustrating an exemplary apparatus 800 according to some embodiments of the present disclosure.

[0108] like Figure 8 As shown in FIG. 8 , the apparatus 800 may include at least one non-transitory computer-readable medium ( Figure 8 ), at least one receiving circuit system 802, at least one transmitting circuit system 804, and at least one processor 806, which is coupled to a non-transitory computer-readable medium ( Figure 8 ), receiving circuit system 802 and transmitting circuit system 804. Apparatus 800 may be a base station side apparatus (eg, a BS or a satellite) or a communication device (eg, a UE).

[0109] Although in this figure, elements such as at least one processor 806, transmit circuit system 804, and receive circuit system 802 are described in the singular, the plural form should be considered unless it is explicitly stated to be limited to the singular. In some embodiments of the present disclosure, the receive circuit system 802 and the transmit circuit system 804 are combined into a single device, such as a transceiver. In certain embodiments of the present disclosure, the device 800 may further include an input device, a memory, and / or other components.

[0110] In some embodiments of the present disclosure, a non-transitory computer-readable medium may have computer-executable instructions stored thereon to cause a processor to implement the method as described above with respect to a UE. For example, when executed, the computer-executable instructions cause the processor 806 to interact with the receiving circuit system 802 and the transmitting circuit system 804 to perform Figures 1 to 6 The steps described about the UE.

[0111] In some embodiments of the present disclosure, a non-transitory computer-readable medium may have computer-executable instructions stored thereon to cause a processor to implement the method as described above with respect to a BS or a satellite. For example, when executed, the computer-executable instructions cause the processor 806 to interact with the receiving circuit system 802 and the transmitting circuit system 804 to perform Figures 1 to 5 and the steps described in 7 regarding BS or satellite.

[0112] Those of ordinary skill in the art will appreciate that the steps of the methods described in conjunction with the aspects disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In addition, in some aspects, the steps of the method may reside as one or any combination or set of codes and / or instructions on a non-transitory computer-readable medium that may be incorporated into a computer program product.

[0113] Although the present disclosure has been described with its specific embodiments, it is apparent that many alternatives, modifications and variations may be apparent to those skilled in the art. For example, the various components of the embodiments may be interchanged, added or replaced in other embodiments. In addition, all elements of each figure are not necessarily required for the operation of the disclosed embodiments. For example, a person skilled in the art of the disclosed embodiments will be able to make and use the teachings of the present disclosure by simply adopting elements of independent technical solutions. Therefore, the embodiments of the present disclosure as described herein are intended to be illustrative, not restrictive. Various changes may be made without departing from the spirit and scope of the present disclosure.

[0114] In this document, the term "includes / including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements not only comprises the elements, but also may comprise other elements that are not explicitly listed or inherent to such processes, methods, articles or equipment. In the absence of more constraints, elements beginning with "a / an" or the like do not exclude the presence of additional identical elements in the process, method, article or equipment comprising the elements. In addition, the term "another" is defined as at least a second or more. As used herein, the term "having" and the like are defined as "comprising".

Claims

1. A method for wireless communication, comprising: receiving signaling indicating configuration information about a set of aperiodic channel state information reference signal (CSI-RS) resources corresponding to a triggering state in downlink control information (DCI), wherein the set of aperiodic CSI-RS resources includes a plurality of subsets of aperiodic CSI-RS resources, wherein the configuration information indicates a corresponding bandwidth part (BWP) index of each subset of the aperiodic CSI-RS resources, such that all CSI-RS resources in the CSI-RS resource subset are transmitted in the same BWP; and At least one aperiodic CSI-RS resource in the group of aperiodic CSI-RS resources is received according to the configuration information.

2. The method according to claim 1, wherein the configuration information further indicates time domain offset information of each subset of aperiodic CSI-RS resources.

3. The method according to claim 2, wherein the time domain offset information of the subset of aperiodic CSI-RS resources indicates: The number of time slots between the DCI triggering multiple subsets of the non-periodic CSI-RS resources and the subsets of the non-periodic CSI-RS resources with respect to the subcarrier space SCS.

4. The method according to claim 3, wherein the SCS is configured by radio resource control RRC signaling, or the SCS is an SCS based on a BWP carrying a subset of the non-periodic CSI-RS resources, or an SCS based on a BWP of a previous subset of non-periodic CSI-RS resources carrying a subset of the non-periodic CSI-RS resources, or the SCS is predefined for a frequency range.

5. The method according to claim 1, wherein the configuration information indicates a first offset of a first subset of the non-periodic CSI-RS resources of the multiple subsets of the non-periodic CSI-RS resources, and the first subset of the non-periodic CSI-RS resources is closest to the DCI in the time domain among the multiple subsets of the non-periodic CSI-RS resources.

6. The method of claim 5, wherein the first offset is based on one of: A subcarrier space SCS of a BWP carrying the DCI that triggers multiple subsets of the aperiodic CSI-RS resources; an SCS of a BWP carrying a first subset of the aperiodic CSI-RS resources; and Predefined SCS for frequency range.

7. The method according to claim 5, further comprising: determining a second offset between a second subset of aperiodic CSI-RS resources of the plurality of subsets of the aperiodic CSI-RS resources and a third subset of the aperiodic CSI-RS resources, wherein the third subset of the aperiodic CSI-RS resources follows the second subset of the aperiodic CSI-RS resources in the time domain in the plurality of subsets of the aperiodic CSI-RS resources; and A time domain offset of a third subset of the aperiodic CSI-RS resources is determined based on the first offset and the second offset.

8. The method of claim 7, wherein the second offset is based on one of: A subcarrier space SCS of a BWP carrying the DCI that triggers multiple subsets of the aperiodic CSI-RS resources; an SCS of a BWP carrying a second subset of the aperiodic CSI-RS resources; an SCS of a BWP carrying a third subset of the aperiodic CSI-RS resources; and Predefined SCS for frequency range.

9. The method of claim 7, wherein the second offset is based on a BWP switching delay or is predefined.

10. The method of claim 9, wherein the BWP switching delay is associated with a subcarrier space SCS of a BWP carrying the second subset of the aperiodic CSI-RS resources and an SCS of a BWP carrying a third subset of the aperiodic CSI-RS resources.

11. The method according to claim 1, further comprising: A CSI report indicating a reference signal received power (RSRP) value of the at least one aperiodic CSI-RS resource and an index of the at least one aperiodic CSI-RS resource is transmitted.

12. The method of claim 11, further comprising indexing the aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources in the following order: First, in increasing order of the aperiodic CSI-RS resources within the subset of aperiodic CSI-RS resources; and Then, in increasing order of subset indexes of the multiple subsets of the aperiodic CSI-RS resources.

13. The method of claim 11, further comprising indexing the aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources in the following order: For each subset of aperiodic CSI-RS resources, in increasing order of the aperiodic CSI-RS resources in the corresponding subset of aperiodic CSI-RS resources; The CSI report further indicates a subset index of a subset of aperiodic CSI-RS resources to which the at least one aperiodic CSI-RS resource belongs.

14. The method of claim 1, further comprising: A CSI report indicating a reference signal received power (RSRP) value of the at least one aperiodic CSI-RS resource and an index of the at least one aperiodic CSI-RS resource is transmitted.

15. The method of claim 14, further comprising indexing the aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources in the following order: First, in increasing order of the aperiodic CSI-RS resources within the subset of aperiodic CSI-RS resources; and Then, in increasing order of the BWP indexes of the multiple subsets of the aperiodic CSI-RS resources.

16. The method of claim 14, further comprising indexing the aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources in the following order: For each subset of aperiodic CSI-RS resources, in increasing order of the aperiodic CSI-RS resources in the corresponding subset of aperiodic CSI-RS resources; The CSI report further indicates a BWP index of a subset of aperiodic CSI-RS resources to which the at least one aperiodic CSI-RS resource belongs.

17. The method of claim 1, further comprising: Switching to the first BWP to receive the at least one aperiodic CSI-RS resource triggered by the DCI in a second BWP; and After measuring the channel state information of the plurality of subsets of the aperiodic CSI-RS resources, switching back to the second BWP for information transmission or reception.

18. A method for wireless communication, comprising: transmitting signaling indicating configuration information about a set of aperiodic channel state information reference signal CSI-RS resources corresponding to a triggering state in downlink control information DCI, wherein the set of aperiodic CSI-RS resources includes a plurality of subsets of aperiodic CSI-RS resources, wherein the configuration information indicates a corresponding bandwidth part BWP index of each subset of the aperiodic CSI-RS resources, such that all CSI-RS resources in the CSI-RS resource subset are transmitted in the same BWP; and At least one aperiodic CSI-RS resource in the group of aperiodic CSI-RS resources is transmitted according to the configuration information.

19. The method according to claim 18, wherein the configuration information indicates time domain offset information of each subset of aperiodic CSI-RS resources.

20. The method according to claim 19, wherein the time domain offset information of the subset of aperiodic CSI-RS resources indicates: The number of time slots between the DCI triggering multiple subsets of the non-periodic CSI-RS resources and the subsets of the non-periodic CSI-RS resources with respect to the subcarrier space SCS.

21. The method according to claim 20, wherein the SCS is configured by radio resource control RRC signaling, or the SCS is an SCS based on a BWP carrying a subset of the non-periodic CSI-RS resources, or an SCS based on a BWP of a previous subset of non-periodic CSI-RS resources carrying a subset of the non-periodic CSI-RS resources, or the SCS is predefined for a frequency range.

22. A method according to claim 18, wherein the configuration information indicates a first offset of a first subset of non-periodic CSI-RS resources among multiple subsets of the non-periodic CSI-RS resources, and the first subset of non-periodic CSI-RS resources is closest to the DCI in the time domain among the multiple subsets of the non-periodic CSI-RS resources.

23. The method of claim 22, wherein the first offset is based on one of: A subcarrier space SCS of a BWP carrying the DCI that triggers multiple subsets of the aperiodic CSI-RS resources; an SCS of a BWP carrying a first subset of the aperiodic CSI-RS resources; and Predefined SCS for frequency range.

24. The method of claim 22, further comprising: Determine a second offset between a second subset of aperiodic CSI-RS resources of the plurality of subsets of aperiodic CSI-RS resources and a third subset of aperiodic CSI-RS resources, wherein the third subset follows the second subset in the plurality of subsets of aperiodic CSI-RS resources in the time domain; and A time domain offset of a third subset of the aperiodic CSI-RS resources is determined based on the first offset and the second offset.

25. The method of claim 24, wherein the second offset is based on one of: A subcarrier space SCS of a BWP carrying the DCI that triggers multiple subsets of the aperiodic CSI-RS resources; an SCS of a BWP carrying a second subset of the aperiodic CSI-RS resources; an SCS of a BWP carrying a third subset of the aperiodic CSI-RS resources; and Predefined SCS for frequency range.

26. The method of claim 24, wherein the second offset is based on a BWP switching delay or is predefined.

27. The method of claim 26, wherein the BWP switching delay is associated with a subcarrier space SCS of a BWP carrying the second subset of the aperiodic CSI-RS resources and an SCS of a BWP carrying a third subset of the aperiodic CSI-RS resources.

28. The method of claim 18, further comprising: A CSI report indicating a reference signal received power (RSRP) value of the at least one aperiodic CSI-RS resource and an index of the at least one aperiodic CSI-RS resource is received.

29. The method of claim 28, further comprising indexing the aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources in the following order: First, in increasing order of the aperiodic CSI-RS resources within the subset of aperiodic CSI-RS resources; and Then, in increasing order of subset indexes of the multiple subsets of the aperiodic CSI-RS resources.

30. The method of claim 28, further comprising indexing the aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources in the following order: For each subset of aperiodic CSI-RS resources, in increasing order of the aperiodic CSI-RS resources in the corresponding subset of aperiodic CSI-RS resources; The CSI report further indicates a subset index of a subset of aperiodic CSI-RS resources to which the at least one aperiodic CSI-RS resource belongs.

31. The method of claim 18, further comprising: A CSI report indicating a reference signal received power (RSRP) value of the at least one aperiodic CSI-RS resource and an index of the at least one aperiodic CSI-RS resource is received.

32. The method of claim 31 , further comprising indexing the aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources in the following order: First, in increasing order of the aperiodic CSI-RS resources within the subset of aperiodic CSI-RS resources; and Then, in increasing order of the BWP indexes of the multiple subsets of the aperiodic CSI-RS resources.

33. The method of claim 31 , further comprising indexing the aperiodic CSI-RS resources in the set of aperiodic CSI-RS resources in the following order: For each subset of aperiodic CSI-RS resources, in increasing order of the aperiodic CSI-RS resources in the corresponding subset of aperiodic CSI-RS resources; The CSI report further indicates a BWP index of a subset of aperiodic CSI-RS resources to which the at least one aperiodic CSI-RS resource belongs.

34. A device for wireless communication, comprising: at least one non-transitory computer-readable medium having computer-executable instructions stored thereon; at least one receiving circuit system; at least one transmit circuit system; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receive circuitry, and the at least one transmit circuitry, Wherein the computer-executable instructions cause the at least one processor to implement the method of any one of claims 1 to 17.

35. A device for wireless communication, comprising: at least one non-transitory computer-readable medium having computer-executable instructions stored thereon; at least one receiving circuit system; at least one transmit circuit system; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receive circuitry, and the at least one transmit circuitry, Wherein the computer-executable instructions cause the at least one processor to implement the method of any one of claims 18 to 33.

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