CSI reporting in multi-cell scheduling environment

Abstract

A method of a wireless terminal for a new radio (NR) system is provided. The method includes receiving downlink control information (DCI) in a physical downlink control channel (PDCCH) associated with a first serving cell of the plurality of serving cells. The DCI includes configuration information for one or more physical uplink shared channels (PUSCHs), each of the one or more PUSCHs being associated with a corresponding serving cell of one or more serving cells of the plurality of serving cells. The DCI also includes trigger information for triggering generation of a channel state information (CSI) report at the wireless terminal. The method further includes generating the CSI report in response to receiving the trigger information; selecting the PUSCH associated with a serving cell of the one or more serving cells of the plurality of serving cells; and transmitting the CSI report on the PUSCH associated with the one serving cell.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications, and more particularly to channel state information (CSI) reporting in a multi-cell scheduling environment of wireless networks, such as fifth generation (5G) (e.g., New Radio (NR)) networks. Background Art

[0002] The upcoming 3rd Generation Partnership Project (3GPP) of Release 18 (Rel-18) may support multi-cell scheduling. In multi-cell scheduling, a single serving cell may transmit a single downlink control information (DCI) format or transmission (e.g., on a physical downlink control channel (PDCCH)) to a wireless terminal (e.g., a user equipment or UE) that may include information for scheduling multiple physical uplink shared channels (PUSCHs) for multiple serving cells. (See, for example, 3GPP Radio Access Network (RAN) Group document RP-221435: Revised WID (Work Item Description) on Multi-Carrier Enhancement.) As described in more detail below, in this multi-cell scheduling environment, one potential problem to be solved is the transmission of a triggered aperiodic channel state information (CSI) report from a wireless terminal. More specifically, assuming that multiple PUSCHs have been scheduled for multiple serving cells, the wireless terminal may select a single PUSCH among the PUSCHs on which to transmit a triggered CSI report. Summary of the invention

[0003] In one example, a wireless terminal for performing channel state information (CSI) reporting in a multi-cell scheduling environment, the wireless terminal comprising: a transmitter; a receiver; one or more non-transitory computer-readable media, the one or more non-transitory computer-readable media storing computer-executable instructions; and at least one processor, the at least one processor coupled to the one or more non-transitory computer-readable media and configured to execute the computer-executable instructions so that the wireless terminal performs operations, the operations including: receiving, by the receiver, downlink control information (D CSI) in a physical downlink control channel (PDCCH) associated with a first serving cell among a plurality of serving cells; CI), the downlink control information (DCI) comprising: configuration information for one or more physical uplink shared channels (PUSCHs), each of the one or more PUSCHs being associated with a corresponding service cell in one or more of the multiple service cells; and trigger information, the trigger information being used to trigger a CSI report at the wireless terminal; generating the CSI report in response to receiving the trigger information; selecting the PUSCH associated with one of the one or more service cells in the multiple service cells; and transmitting the CSI report on the PUSCH associated with the one service cell through the transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Specific implementations of the present disclosure will now be described, by way of example only, with reference to the accompanying drawings. Figure 1 is a communication diagram illustrating a process for triggering and transmitting aperiodic CSI reports according to an example implementation of the present disclosure. Figure 2 is a time-frequency diagram illustrating scheduling of PUSCH for multiple serving cells using a single DCI format transmitted in a PDCCH of a single serving cell according to an example implementation of the present disclosure. Figure 3 is a conceptual block diagram indicating logical components of a wireless terminal according to an example implementation of the present disclosure. Figure 4 is a flow chart illustrating a method for a wireless terminal to transmit an aperiodic CSI report in a multi-cell environment according to an example implementation of the present disclosure. Figure 5 is a flow chart illustrating a method for selecting a PUSCH associated with one of a plurality of serving cells for transmitting an aperiodic CSI report, according to an example implementation of the present disclosure. Figure 6is a flow chart illustrating another method for selecting a PUSCH associated with one of a plurality of serving cells for transmitting an aperiodic CSI report, according to an example implementation of the present disclosure. Figure 7 is a flow chart illustrating yet another method for selecting a PUSCH associated with one of a plurality of serving cells for transmitting an aperiodic CSI report according to an example implementation of the present disclosure. Figure 8 is a flow chart illustrating yet another method for selecting a PUSCH associated with one of a plurality of serving cells for transmitting an aperiodic CSI report, according to an example implementation of the present disclosure. Fig. 9 is a block diagram illustrating a node for wireless communication according to an example implementation of the present application. DETAILED DESCRIPTION

[0005] 3GPP is a cooperative agreement that aims to develop globally applicable technical specifications and technical reports for third and fourth generation wireless communication systems. 3GPP also develops specifications for next generation mobile networks, systems and devices.

[0006] 3GPP Long Term Evolution (LTE) is the name given to a project to improve the Universal Mobile Telecommunications System (UMTS) mobile phone or device standard to cope with future requirements. In one aspect, UMTS has been modified to provide support and specifications for Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN).

[0007] At least some aspects of the systems and methods disclosed herein may be described in conjunction with 3GPP LTE, Advanced LTE (LTE-A), and other standards including New Radio (NR) (e.g., 3GPP Releases 8, 9, 10, 11, 12, 13, 14, 15, etc.), also referred to as 5G. However, the scope of the present disclosure should not be limited in this regard. At least some aspects of the systems and methods disclosed herein may be used in other types of wireless communication systems.

[0008] A wireless terminal may be an electronic device that transmits voice and / or data to a base station (BS), which in turn may communicate with a network of devices (e.g., a public switched telephone network (PSTN), the Internet, etc.). When describing the systems and methods herein, a wireless terminal may alternatively be referred to as a wireless communication device, a mobile station, a UE, a wireless terminal, an access terminal, a subscriber station, a mobile terminal, a remote station, a user terminal, a terminal, a subscriber unit, a mobile device, etc. Examples of wireless terminals may include cellular phones, smart phones, personal digital assistants (PDAs), laptop computers, netbooks, e-readers, wireless modems, etc.

[0009] In the 3GPP specification, a wireless terminal may be generally referred to as a UE. However, since the scope of the present disclosure should not be limited to the 3GPP standard, the terms "UE", "subscriber station", etc. may be used interchangeably herein to represent the more general term "wireless terminal". A UE may also be more generally referred to as a wireless terminal or terminal device.

[0010] In the 3GPP specifications, BS is often referred to as Node B, Evolved Node B (eNB), Home Enhanced or Evolved Node B (HeNB), Next Generation Node B (gNB), or some other similar terms. Since the scope of the present disclosure should not be limited to the 3GPP standards, the terms "base station", "Node B", "eNB", "HeNB", and "gNB" may be used interchangeably herein to represent the more general term "base station". In addition, the term "base station" or "BS" may be used to represent an access point. An access point may be an electronic device that provides wireless communication devices with access to a network (e.g., a local area network (LAN), the Internet, etc.). The term "communication device" may be used to represent a wireless communication device and / or a base station. eNB and / or gNB may also be more generally referred to as a base station device.

[0011] It should be noted that as used herein, a "cell" may be a set of communication channels that are specified by a standardization or regulatory body for use with International Mobile Telecommunications-Advanced (IMT-Advanced) and all of IMT-Advanced or a subset thereof, so that it may be adopted by 3GPP as an authorized band (e.g., frequency band) for communication between an eNB and a UE. It should also be noted that in the E-UTRA and E-UTRAN general description, as used herein, a "cell" may be defined as a "combination of downlink resources and optionally uplink resources". The link between the carrier frequency of the downlink resources and the carrier frequency of the uplink resources may be indicated in the system information transmitted on the downlink resources.

[0012] "Configured cells" are those cells that the UE is aware of and is permitted by the eNB and / or gNB to transmit or receive information. A "configured cell" may be a serving cell. The UE may receive system information and perform required measurements on all configured cells. A "configured cell" for a radio connection may include a primary cell and / or zero, one or more secondary cells.

[0013] "Activated cells" are those configured cells on which the UE is transmitting and receiving. That is, activated cells are those cells whose physical downlink control channel (PDCCH) the UE monitors, and in case of downlink transmissions, those cells whose physical downlink shared channel (PDSCH) the UE decodes. "Deactivated cells" are those configured cells for which the UE does not monitor the transmitted PDCCH. It should be noted that a "cell" may be described in different dimensions. For example, a "cell" may have temporal, spatial (e.g., geographical) and frequency characteristics.

[0014] The 5G communication system, referred to as NR technology by 3GPP, envisions using time / frequency / space resources to enable services such as enhanced mobile broadband (eMBB) transmissions, ultra-reliable low-latency communications (URLLC) transmissions, and massive machine type communications (mMTC) transmissions. Moreover, in NR, single-beam and / or multi-beam operations are considered for downlink and / or uplink transmissions.

[0015] Various examples of the systems and methods disclosed herein will now be described with reference to the accompanying drawings, wherein the same reference numerals may indicate functionally similar elements. The systems and methods as generally described and illustrated in the drawings herein can be arranged and designed in a variety of different specific implementations. Therefore, the detailed description of the present disclosure as shown in the drawings is not intended to limit the scope of the present disclosure, but is merely representative of the systems and methods.

[0016] According to various implementations of the present disclosure, a mechanism is discussed by which a UE can select one of a plurality of available PUSCHs, each of which is associated with a different serving cell among a plurality of serving cells, for transmitting an aperiodic CSI report. NR frame structure

[0017] The 5G NR frame structure is described in the NR 3GPP standard (e.g., Technical Specification (TS) 38.211). The 5G NR frame structure includes subframes, time slots, and symbol configurations. As mentioned above, 5G NR supports two frequency ranges: FR1, which is below 7.125 gigahertz (GHz) and FR2, also known as the millimeter wave range, which is between 24.25 GHz and 71.2 GHz. NR uses a flexible subcarrier spacing derived from the base 15 kilohertz (kHz) subcarrier spacing also used in LTE. A frame may have a duration of 10 milliseconds (ms) and may consist of 10 subframes, each with a duration of 1 ms, similar to LTE networks. Each subframe may have 2 μ time slots (μ is a member of the set [0..4]). Each time slot may typically include 14 orthogonal frequency division multiplexing (OFDM) symbols. 10ms radio frames may be transmitted continuously one after another in a time division duplex (TDD) or frequency division duplex (FDD) topology. A subframe may have a fixed duration (e.g., 1ms), while the length of a time slot may vary based on the subcarrier spacing (SCS) and the number of time slots per subframe. For 15kHz, the time slot is 1ms; for 30kHz, the time slot is 500μs, and so on. A subcarrier spacing of 15kHz may occupy one time slot per subframe, while a subcarrier spacing of 30kHz may occupy two time slots per subframe, and so on. Depending on the normal cyclic prefix (CP) or the extended CP, each time slot may occupy 14 OFDM symbols or 12 OFDM symbols, respectively.

[0018] In 5G, a resource grid (RG) is a grouping of uplink (UL) resources or downlink (DL) resources at the physical layer for a given parameter set (described below). The time domain is typically represented as symbols of slots and slots of subframes, and the frequency domain is typically represented as available resource blocks (RBs) within the transmission bandwidth (also described below).

[0019] In 5G, a resource element (RE) is the smallest physical resource in NR, which may include one subcarrier during one OFDM symbol. In addition, in 5G, one NR resource block (RB) may contain 12 subcarriers in the frequency domain, regardless of the parameter set, and is defined only in the frequency domain (e.g., the bandwidth may not be fixed and may depend on the configured subcarrier spacing). Additionally, in 5G, a physical resource block (PRB) is an RB used for actual / physical transmission / reception. NR Parameter Set

[0020] Parameter set is the term used in 3GPP specifications to describe different subcarrier spacing types, as there are several different types of subcarrier spacing as summarized in the following Table 1 (which is similar to Table 4.2-1 in TS 38.211) which defines the supported transmission parameter sets. Table 1 μ <![CDATA[Δf=2 μ ·15[kHz]]]> Cyclic prefix 0 15 normal 1 30 normal 2 60 Normal, Extended 3 120 normal 4 240 normal

[0021] It should be noted that for the remainder of this disclosure, the terms parameter set and subcarrier spacing (SCS) are used interchangeably. It should also be noted that the term "SCS configuration factor n" may be used to refer to the subcarrier spacing type, where n may belong to the set [0, 1, 2, 3, 4], as indicated in the table above and referred to as μ.

[0022] As described in greater detail below, various implementations of the present disclosure include a wireless terminal selecting a PUSCH associated with a serving cell among a plurality of serving cells on which to transmit an aperiodic CSI report. Figure 1 is a communication diagram illustrating a process 100 for triggering and transmitting aperiodic CSI reports according to an example implementation of the present disclosure.

[0023] In the process 100, a network (NW) 104 (e.g., a serving cell of a network using one or more BSs) may transmit a CSI reporting configuration 110 to a wireless terminal 102 (e.g., via radio resource control (RRC) signaling). In some implementations, the CSI reporting configuration 110 may include information about one or more types of CSI-related reference signals to be monitored (e.g., CSI reference signals CSI-RS, synchronization signal blocks (SSBs), etc.), one or more groups of resource elements (REs) that the CSI-related reference signals may occupy, etc. Thereafter, the NW 104 may transmit an aperiodic CSI trigger 112 to the wireless terminal 102 (e.g., via DCI, a medium access control (MAC) control element (CE), etc.) to trigger or initiate the wireless terminal 102 to monitor the CSI-related reference signals.

[0024] In response to receiving the aperiodic CSI trigger 112, the wireless terminal 102 may monitor CSI-related reference signals 114 (e.g., the CSI-related reference signals indicated in the CSI reporting configuration 110). During monitoring, the wireless terminal 102 may measure the CSI-related reference signals 114 and generate various indicator values ​​(e.g., channel quality indicator (CQI), rank indicator (RI), etc.) to be provided in an aperiodic CSI report 116 transmitted (e.g., on the PUSCH) to the NW 104. In some implementations, the wireless terminal 102 may have completed monitoring the CSI-related reference signals 114 before the aperiodic CSI trigger 112 is received at the wireless terminal 102.

[0025] As indicated above, within a multi-cell scenario, process 100 may appear more complex. Figure 22 is a time-frequency diagram 200 illustrating the use of a single DCI transmission or format transmitted in a PDCCH 215 associated with a single serving cell (e.g., serving cell 210) to schedule PUSCH 220, 221, and 222 for multiple serving cells 210, 211, and 212, respectively, according to an example implementation of the present disclosure. As used herein, the term "DCI" may refer to downlink control information transmitted by NW 104 to wireless terminal 102, and the term "DCI format" may refer to a specific type of DCI and their format or arrangement within a single DCI transmission. Therefore, the terms "DCI", "DCI format", and "DCI transmission" may be used interchangeably herein.

[0026] like Figure 2 As indicated, the vertical dimension corresponds to the frequency domain (f), while the horizontal dimension is associated with the time domain (t). In the illustrated example, each serving cell 210, 211, and 212 corresponds to a specific continuous bandwidth (e.g., a set of carrier frequencies) that can be used in the communication system to transmit and receive signals with a wireless terminal (e.g., wireless terminal 102). However, other examples are not limited in this manner, as one or more serving cells 210, 211, and 212 may employ carrier frequencies that are not grouped into a continuous set and may be interspersed between carrier frequencies of other serving cells.

[0027] In some implementations, the serving cells 210, 211, and 212 may all belong to the same cell group or the same set of cell groups (e.g., a master cell group (MCG), a secondary cell group (SCG), an MCG and an associated SCG, etc.). However, other implementations of the present disclosure are not limited in this manner, as the serving cells 210, 211, and 212 may be associated in other ways (e.g., associated with the same PUCCH cell group).

[0028] like Figure 2 As shown, the first serving cell (e.g., serving cell 210) may transmit configuration information (e.g., scheduling information in a DCI format) for a separate PUSCH associated with each of the serving cells 210, 211, and 212 in the PDCCH 215. In some implementations, the configuration information may identify specific resource blocks (RBs), resource elements (REs), and / or time-frequency resources that may be occupied by the PUSCH associated with each of the serving cells 210, 211, and 212. Figure 2 As indicated, each PUSCH 220, 221, and 222 may differ in the number of time-frequency resources used, the carrier frequencies involved, the start time and / or duration of each PUSCH, etc. In other specific implementations, two or more of the PUSCHs 220, 221, and 222 may share one or more of the aforementioned characteristics.

[0029] Although Figure 2 The first serving cell 210 is instructed to provide configuration information for each PUSCH associated with each of the serving cells 210, 211, and 212, but in some implementations, the configuration information may not provide scheduling information for the PUSCH associated with each of the serving cells associated with the first serving cell 210. In other words, a single DCI transmission or format in the PDCCH 215 may carry PUSCH scheduling information for only a subset of the plurality of serving cells 210, 211, and 212. In addition, in some implementations, the first serving cell 210 may not currently provide PUSCHs for its own serving cells (e.g., Figure 2 information of PUSCH 220).

[0030] In some implementations, the configuration information may be included in the DCI format. In addition, in addition to the configuration or scheduling information described above, the DCI format may also include an aperiodic CSI trigger indication (e.g., Figure 1 In response to receiving such a trigger, the wireless terminal 102 may monitor the CSI-related reference signals (e.g., Figure 1 ) to generate a CSI report to be transmitted back to NW 104 in the PUSCH (e.g., Figure 1 non-periodic CSI reporting 116).

[0031] exist Figure 2 In the scenario of , assuming that multiple PUSCHs 220, 221, and 222 are available among the multiple serving cells 210, 211, and 212, the operations that the wireless terminal 102 may perform before transmitting the CSI report may include selecting one of the PUSCHs 220, 221, and 222 for transmitting the non-periodic CSI report 116. In at least some environments, the transmission of CSI reports on multiple PUSCHs may be problematic. For example, a PUSCH carrying a non-periodic CSI report may also play an important role in other uses, such as uplink channel information (UCI) multiplexing, which may typically require only one PUSCH to be used to transmit such information. Therefore, in some cases, the number of PUSCHs carrying a non-periodic CSI report may need to be limited to a maximum threshold (e.g., one PUSCH).

[0032] Figure 3 is a conceptual block diagram indicating logical components of a wireless terminal 300 according to an example implementation of the present disclosure. Figure 3As shown, the wireless terminal 300 may include a receive circuit 302, a PUSCH selection circuit 304, and a transmit circuit 306. Other components and features may be included in the wireless terminal 300, but for the sake of brevity, and to focus on and simplify the following discussion, they are not shown or discussed herein. Each of the receive circuit 302, the PUSCH selection circuit 304, and the transmit circuit 306 may include electronic hardware (e.g., analog and / or digital circuits) with or without software or firmware, which software or firmware may include one or more memories storing computer-executable instructions that, when executed by one or more processors (e.g., microprocessors, microcontrollers, digital signal processors (DSPs), application specific integrated circuits (ASICs), etc.), cause the wireless terminal to perform the operations described below. For example, the operations that may be performed by each of the components 302, 304, and 306 are described below with reference to the following figures (such as Figures 4 to 8 ) to describe.

[0033] Figure 4 4 is a flowchart illustrating a method 400 for transmitting aperiodic CSI reports in a multi-cell environment performed by a wireless terminal (e.g., wireless terminal 300) according to an example implementation of the present disclosure. Although the following method 400 and other methods outlined herein are described in conjunction with wireless terminal 300, in other implementations, other wireless terminals not specifically described herein may also perform such methods. Additionally, although a specific execution order is discussed for each method presented herein, other execution orders (including adding or removing one or more operations) are also possible.

[0034] In the method 400, at operation 402, the wireless terminal 300 may receive the wireless signal through the receiving circuit 302 (e.g., Figure 3 ) receiving DCI in a PDCCH associated with a first serving cell among a plurality of serving cells. In some implementations, the DCI may include: configuration information for one or more PUSCHs, each of the one or more PUSCHs being associated with a corresponding serving cell among the one or more serving cells among the plurality of serving cells; and trigger information for triggering generation of a CSI report at the wireless terminal 300.

[0035] In some implementations, as described below, configuration information may allow the wireless terminal 300 to determine or derive information necessary to perform the operations described herein. In some examples, the configuration information may explicitly state or indicate the information required by the wireless terminal 300, or may indirectly provide such information (e.g., by allowing the wireless terminal 300 to use the information to calculate or derive the necessary information).

[0036] In some implementations, the configuration information may include first information indicating a subset of the plurality of serving cells (eg, one or more serving cells, possibly including all serving cells) having a configured or scheduled PUSCH. Figure 2 As an example, serving cells 210, 211, and 212 may be a subset of a larger number of serving cells, wherein each serving cell in the subset includes a PUSCH scheduled by the configuration of the DCI. In other examples, serving cells 210, 211, and 212 may represent both the total number of serving cells and a subset of serving cells with scheduled PUSCH. In other examples, the subset of serving cells may be as few as two serving cells and as many as all serving cells among all serving cells of wireless terminal 300.

[0037] In some implementations, the configuration information may include second information that provides a configuration for each PUSCH associated with a subset of the plurality of serving cells. The second information may include, but is not necessarily limited to, time-frequency resources associated with the PUSCH, a demodulation reference signal (DMRS) port, a new data indicator (NDI), a redundancy version (RV), a hybrid automatic repeat request (HARQ) process number, etc.

[0038] In some implementations, the configuration information may include third information indicating that CSI reporting (eg, aperiodic CSI reporting) is being triggered in the wireless terminal 300 .

[0039] In some implementations, the configuration information may include fourth information indicating a PUSCH associated with one of the subset of serving cells in which the aperiodic CSI report triggered in the wireless terminal 300 is to be transmitted (eg, multiplexed).

[0040] In operation 404 of method 400, the wireless terminal 300 may generate an aperiodic CSI report in response to receiving a trigger indicator (e.g., third information of the configuration information). In some implementations, the wireless terminal 300 may generate an aperiodic CSI report based on measurements of one or more CSI-related reference signals received by the receiving circuit 302 (e.g., such as by a CSI report configuration received at the wireless terminal 300 (e.g., via RRC signaling, such as Figure 1 The non-periodic CSI report is generated according to the determination of the (depicted in FIG. 1 ).

[0041] In operation 406, the wireless terminal 300 may select a PUSCH associated with one of the serving cells in the subset of serving cells through the PUSCH selection circuit 304. Figures 5 to 7As described more fully, selection of the PUSCH may be based on configuration information received in the DCI and / or based on other information received by or stored in the wireless terminal 300.

[0042] In operation 408 , the wireless terminal 300 may transmit the generated aperiodic CSI report on the selected PUSCH via the transmission circuit 306 .

[0043] Figure 5 1 is a flowchart illustrating a method 500 for selecting a PUSCH associated with one of one or more serving cells of a plurality of serving cells (e.g., a serving cell in a subset of the plurality of serving cells as mentioned above) for transmitting an aperiodic CSI report according to an example implementation of the present disclosure. In some implementations, the method 500 is used as Figure 4 An example of selecting operation 406 of method 400 is shown.

[0044] In method 500, in operation 502, wireless terminal 300 may receive selection information through receiving circuit 302, the selection information indicating a PUSCH associated with a serving cell on which an aperiodic CSI report is to be transmitted. In some examples, the selection information may be included or indicated in configuration information in a DCI format (e.g., fourth information of configuration information in a DCI format). In other examples, the selection information may be included or indicated in RRC signaling (e.g., from Figure 1 In yet other examples, the selection information may be received via other means or stored in the wireless terminal 300.

[0045] In operation 504, the wireless terminal 300 may select the PUSCH associated with the one serving cell as the PUSCH on which the aperiodic CSI report is to be transmitted via the PUSCH selection circuit 304. Thus, in method 500, the wireless terminal 300 receives an explicit indication of a specific PUSCH to be selected, or receives information based on which a specific PUSCH is to be determined.

[0046] Figure 6 is a flowchart illustrating another method for selecting a PUSCH associated with one of a plurality of serving cells for transmitting an aperiodic CSI report according to an example implementation of the present disclosure. In some implementations, the method 600 is used as Figure 4 An example of selecting operation 406 of method 400 is shown.

[0047] In method 600, in operation 602, the wireless terminal 300 may determine, through the PUSCH selection circuit 304, a serving cell associated with the PDCCH carrying the DCI (eg, the first serving cell 210 carrying the PDCCH 215, such as Figure 2 ) is one of the one or more serving cells in the plurality of serving cells (e.g., one of the subset of the plurality of serving cells having the scheduled PUSCH). In operation 604, the wireless terminal 300 may select, through the PUSCH selection circuit 304, a PUSCH associated with the serving cell associated with the PDCCH carrying the DCI (e.g., PUSCH 220, as shown). Figure 2 In other words, if the serving cell associated with the PDCCH carrying the DCI is also associated with one of the PUSCHs configured by the configuration information of the DCI, the wireless terminal 300 may select the PUSCH associated with the serving cell for transmitting the non-periodic CSI report.

[0048] Figure 7 is a flow chart illustrating yet another method 700 for selecting a PUSCH associated with one of a plurality of serving cells for transmitting an aperiodic CSI report according to an example implementation of the present disclosure. In some implementations, the method 700 is used as Figure 4 An example of selecting operation 406 of method 400 is shown.

[0049] In method 700, in operation 702, the wireless terminal 300 may compare the serving cell indexes of the one or more serving cells (e.g., a subset of the plurality of serving cells) among the plurality of serving cells by the PUSCH selection circuit 304. In operation 704, the wireless transmitter may select a PUSCH associated with one of the one or more serving cells among the plurality of serving cells based on the comparison by the PUSCH selection circuit 304. As indicated above, the one or more serving cells among the plurality of serving cells may be a group of serving cells for which a single DCI transmission schedules a PUSCH in each serving cell in the group.

[0050] For example, the PUSCH selection circuit 304 may be configured to select the PUSCH associated with the serving cell having the lowest serving cell index among the one or more serving cells in the multiple serving cells. For another example, the PUSCH selection circuit 304 may be configured to select the PUSCH associated with the serving cell having the highest serving cell index among the one or more serving cells in the multiple serving cells.

[0051] Figure 8is a flow chart illustrating another method 800 for selecting a PUSCH associated with one of a plurality of serving cells for transmitting an aperiodic CSI report according to an example implementation of the present disclosure. In some implementations, the method 800 is used as Figure 4 An example of selecting operation 406 of method 400 is shown.

[0052] In method 800, in operation 802, the wireless terminal 300 may compare at least one characteristic or aspect (e.g., temporal position, duration, bandwidth, etc.) of the PUSCH associated with the one or more serving cells (e.g., a subset of the multiple serving cells) among the multiple serving cells through the PUSCH selection circuit 304. In operation 804, the wireless terminal 300 may select, through the PUSCH selection circuit 304, a PUSCH associated with one of the one or more serving cells among the multiple serving cells based on the comparison.

[0053] In some implementations, one or more time-domain aspects or characteristics of the time-frequency resources of each of the PUSCHs associated with the one or more serving cells in the plurality of serving cells can be compared to determine which PUSCH to select.

[0054] In some specific implementations, the PUSCH selection circuit 304 may be configured to select a PUSCH based on the starting time slot of each PUSCH among the one or more service cells in the multiple service cells. For example, the PUSCH selection circuit 304 may be configured to select the PUSCH that starts at the earliest timing among the PUSCHs associated with the one or more service cells in the multiple service cells. For another example, the PUSCH selection circuit 304 may be configured to select the PUSCH that starts at the earliest time slot among the PUSCHs associated with the one or more service cells in the multiple service cells. For another example, the PUSCH selection circuit 304 may be configured to select the PUSCH that starts at the earliest OFDM symbol among the PUSCHs associated with the one or more service cells in the multiple service cells.

[0055] In some specific implementations, the PUSCH selection circuit 304 may be configured to select a PUSCH based on the length (e.g., duration in the time domain) of each PUSCH among the one or more of the multiple serving cells. For example, the PUSCH selection circuit 304 may be configured to select the PUSCH with the longest time length among the PUSCHs associated with the one or more of the multiple serving cells. For another example, the PUSCH selection circuit 304 may be configured to select the PUSCH with the highest number of OFDM symbols among the PUSCHs associated with the one or more of the multiple serving cells. For another example, the PUSCH selection circuit 304 may be configured to select the PUSCH with the highest number of OFDM symbols per time slot among the PUSCHs associated with the one or more of the multiple serving cells.

[0056] In some specific implementations, the PUSCH selection circuit 304 may be configured to select a PUSCH based on the frequency bandwidth of each PUSCH in the one or more serving cells in the multiple serving cells. For example, the PUSCH selection circuit 304 may be configured to select a PUSCH with the largest frequency bandwidth among the PUSCHs associated with the one or more serving cells in the multiple serving cells. For example, the PUSCH selection circuit 304 may be configured to select a PUSCH with the smallest frequency bandwidth among the PUSCHs associated with the one or more serving cells in the multiple serving cells.

[0057] In some implementations, the PUSCH selection circuit 304 may be configured to select a PUSCH based on the number of resource blocks (RBs) of each PUSCH in the one or more serving cells in the plurality of serving cells. For example, the PUSCH selection circuit 304 may be configured to select a PUSCH with the largest number of RBs among the PUSCHs associated with the one or more serving cells in the plurality of serving cells. For example, the PUSCH selection circuit 304 may be configured to select a PUSCH with the smallest number of RBs among the PUSCHs associated with the one or more serving cells in the plurality of serving cells.

[0058] In some implementations, the PUSCH selection circuit 304 may be configured to select a PUSCH based on the number of resource elements (REs) of each PUSCH in the one or more serving cells in the multiple serving cells. For example, the PUSCH selection circuit 304 may be configured to select a PUSCH with the largest number of REs among the PUSCHs associated with the one or more serving cells in the multiple serving cells. For example, the PUSCH selection circuit 304 may be configured to select a PUSCH with the smallest number of REs among the PUSCHs associated with the one or more serving cells in the multiple serving cells.

[0059] In some specific implementations, the PUSCH selection circuit 304 may be configured to Figures 5 to 7 The PUSCH may be selected based on a combination of two or more of the various factors discussed (eg, evaluated in order of priority).

[0060] For example, in some specific implementations, the PUSCH selection circuit 304 may be configured to determine whether the one or more serving cells (e.g., a subset of the multiple serving cells) of the multiple serving cells include a serving cell (e.g., Figure 2 The first serving cell 210 of the plurality of serving cells may be selected. If the one or more serving cells among the plurality of serving cells include a serving cell having a PDCCH carrying DCI, the PUSCH selection circuit 304 may select a PUSCH associated with the serving cell to transmit an aperiodic CSI report. Otherwise, the PUSCH selection circuit 304 may compare at least one of the above aspects (e.g., serving cell index, time-related aspects, frequency-related aspects, etc.) associated with the PUSCH associated with the one or more serving cells among the plurality of serving cells to select one of the PUSCHs to transmit an aperiodic CSI report. For example, if the one or more serving cells among the plurality of serving cells do not include a serving cell having a PDCCH carrying DCI, the PUSCH selection circuit 304 may select a PUSCH associated with a serving cell having a lowest (or highest) serving cell index among the one or more serving cells among the plurality of serving cells.

[0061] In some implementations, the PUSCH selection circuit 304 may be configured to determine one or more PUSCHs among the PUSCHs associated with the one or more serving cells of the plurality of serving cells (e.g., a subset of the plurality of serving cells) based on the earliest time slot. If the number of the one or more PUSCHs is one (e.g., if only one of the PUSCHs associated with the one or more serving cells of the plurality of serving cells occupies the earliest time slot), the PUSCH selection circuit 304 may select the PUSCH to transmit the non-periodic CSI report. Conversely, if the number of the one or more PUSCHs is greater than one (e.g., if more than one of the PUSCHs associated with the one or more serving cells of the plurality of serving cells occupies the earliest time slot), the PUSCH selection circuit 304 may alternatively select a PUSCH associated with a serving cell having a lowest (or highest) serving cell index among the one or more serving cells of the plurality of serving cells.

[0062] Although certain specific combinations of the various factors discussed above are described in detail, other factors not specifically discussed herein may also be evaluated by the PUSCH selection circuit 304 to select a PUSCH from the PUSCHs associated with the one or more serving cells in the plurality of serving cells having a scheduled PUSCH.

[0063] Fig. 9 FIG. 1 shows a block diagram of a node for wireless communication according to an example implementation of the present application. Fig. 9 As shown, the node 900 may include a transceiver 920, a processor 926, a memory 928, one or more presentation components 934, and at least one antenna 936. The node 900 may also include a radio frequency (RF) spectrum band module, a base station communication module, a network communication module, and a system communication management module, an input / output (I / O) port, an I / O component, and a power supply ( Fig. 9 Each of these components may communicate with each other directly or indirectly via one or more buses 938.

[0064] A transceiver 920 having a transmitter 922 and a receiver 924 may be configured to transmit and / or receive time and / or frequency resource partitioning information. In some implementations, the transceiver 920 may be configured to transmit in different types of subframes and time slots, including but not limited to available, unavailable, and flexibly usable subframe and time slot formats. The transceiver 920 may be configured to receive data and control signaling.

[0065] Node 900 may include various computer-readable media. Computer-readable media may be any available media that can be accessed by node 900, and include volatile and non-volatile media, removable and non-removable media. As an example and not limitation, computer-readable media may include computer storage media and communication media. Computer storage media include volatile and non-volatile media, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules or other data.

[0066] Computer storage media include RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disk storage, cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Computer storage media do not exclusively include propagated data signals. Communication media usually embody computer readable instructions, data structures, program modules or other data in the form of modulated data signals (such as carrier waves or other transmission mechanisms), and include any information delivery media. The term "modulated data signal" refers to a signal that sets or changes one or more of its characteristics in a manner that encodes information in the signal. As an example and not limitation, communication media include wired media (such as a wired network or a direct wired connection) and wireless media (such as acoustic, RF, infrared and other wireless media). Combinations of any of the above should also be included within the scope of computer readable media.

[0067] The memory 928 may include computer storage media in the form of volatile and / or non-volatile memory. The memory 928 may be removable, non-removable, or a combination thereof. Exemplary memory includes solid-state memory, a hard drive, an optical drive, etc. Fig. 9 As shown in FIG. 1 , the memory 928 may store computer-readable, computer-executable instructions 932 (eg, software code) that, when executed, are configured to cause the processor 926 to perform the operations described herein, for example, with reference to Figures 1 to 8 Alternatively, the instructions 932 may not be directly executable by the processor 926, but rather (eg, when compiled and executed) may be configured to cause the node 900 to perform the various functions described herein. The processor 926 may include an intelligent hardware device, such as one or more central processing units (CPUs), microcontrollers, ASICs, etc. The processor 926 may include a memory. The processor 926 may process data 930 and instructions 932 received from the memory 928, as well as information passed through the transceiver 920, the baseband communication module, and / or the network communication module. The processor 926 may also process information to be sent to the transceiver 920 for transmission to the network communication module through the antenna 936 for transmission to the core network.

[0068] One or more presentation components 934 present data indications to people or other devices. For example, one or more presentation components 934 include a display device, a speaker, a printing component, a vibration component, etc.

[0069] In some embodiments, Figure 3 The wireless terminal 300 may correspond to Fig. 9More specifically, in some embodiments, the transmitter 922 of the node 900 may be used as the transmit circuit 306 of the wireless terminal 300, the receiver 924 of the node 900 may be used as the receive circuit 302 of the wireless terminal 300, and the processor 926, memory 928 and associated data 930 and instructions 932 may be used as the PUSCH selection circuit 304 of the wireless terminal 300.

[0070] According to the above description, various techniques can be used to implement these concepts without departing from the scope of the concepts described in this application. In addition, although these concepts have been described with specific reference to certain specific implementations, it will be appreciated by those of ordinary skill in the art that changes can be made in form and detail without departing from the scope of these concepts. Therefore, the specific implementations described are considered to be illustrative and non-restrictive in all respects. It should also be understood that the present disclosure is not limited to the above-mentioned specific implementations, but many rearrangements, modifications and substitutions are possible without departing from the scope of the present disclosure.

[0071] In one example, a wireless terminal for performing channel state information (CSI) reporting in a multi-cell scheduling environment of a new radio (NR) system, the wireless terminal comprising: a transmitter; a receiver; one or more non-transitory computer-readable media, the one or more non-transitory computer-readable media storing computer-executable instructions; and at least one processor, the at least one processor being coupled to the one or more non-transitory computer-readable media and configured to execute the computer-executable instructions so that the wireless terminal performs operations, the operations comprising: receiving, by the receiver, downlink control information ( The invention relates to a downlink control information (DCI) comprising: configuration information for one or more physical uplink shared channels (PUSCHs), each of the one or more PUSCHs being associated with a corresponding service cell in one or more of the multiple service cells; and trigger information, the trigger information being used to trigger generation of a CSI report at the wireless terminal; generating the CSI report in response to receiving the trigger information; selecting the PUSCH associated with one of the one or more service cells in the multiple service cells; and transmitting the CSI report on the PUSCH associated with the one service cell through the transmitter.

[0072] In one example, according to the wireless terminal, wherein: the DCI also includes selection information indicating the PUSCH associated with the one serving cell; and the PUSCH associated with the one serving cell is selected based on the selection information.

[0073] In one example, according to the wireless terminal, the operation also includes: receiving, by the receiver, a radio resource control (RRC) message including selection information, the selection information indicating the PUSCH associated with the one service cell, wherein the PUSCH associated with the one service cell is selected based on the selection information.

[0074] In one example, according to the wireless terminal, wherein: the PUSCH associated with the one serving cell is selected based on comparing serving cell indexes of the one or more serving cells in the plurality of serving cells.

[0075] In one example, according to the wireless terminal, wherein: the PUSCH associated with the one serving cell is selected based on comparing positions of the PUSCHs associated with the one or more serving cells among the multiple serving cells in the time domain.

[0076] In one example, according to the wireless terminal, wherein: the PUSCH associated with the one serving cell is selected based on comparing the duration of the PUSCH associated with the one or more serving cells among the multiple serving cells in the time domain.

[0077] In one example, according to the wireless terminal, wherein: the PUSCH associated with the one serving cell is selected based on comparing the number of symbols associated with the PUSCH associated with the one or more serving cells among the multiple serving cells.

[0078] In one example, according to the wireless terminal, wherein: the PUSCH associated with the one serving cell is selected based on comparing bandwidths of the PUSCHs associated with the one or more serving cells among the multiple serving cells.

[0079] In one example, according to the wireless terminal, wherein: the PUSCH associated with the one serving cell is selected based on comparing the number of resource blocks of the PUSCH associated with the one or more serving cells among the multiple serving cells.

[0080] In one example, according to the wireless terminal, wherein: the PUSCH associated with the one serving cell is selected based on comparing the number of resource elements of the PUSCH associated with the one or more serving cells among the multiple serving cells.

[0081] In one example, according to the wireless terminal, wherein: selecting the PUSCH associated with the one serving cell includes selecting the PUSCH associated with the first serving cell.

[0082] In one example, according to the wireless terminal, wherein: selecting the PUSCH associated with the one service cell includes: if the one or more service cells among the multiple service cells include the first service cell, selecting the PUSCH associated with the first service cell; and if the one or more service cells among the multiple service cells do not include the first service cell, selecting the PUSCH associated with the service cell with the lowest service cell index among the one or more service cells among the multiple service cells.

[0083] In one example, according to the wireless terminal, wherein: selecting the PUSCH associated with the one service cell includes: if the one or more service cells among the multiple service cells include the first service cell, selecting the PUSCH associated with the first service cell; and if the one or more service cells among the multiple service cells do not include the first service cell, selecting the PUSCH associated with the one service cell based on at least one of the following items: comparing the service cell indexes of the one or more service cells among the multiple service cells; comparing the positions of the PUSCH associated with the one or more service cells among the multiple service cells in the time domain; comparing the duration of the PUSCH associated with the one or more service cells among the multiple service cells in the time domain; comparing the number of symbols associated with the PUSCH associated with the one or more service cells among the multiple service cells; comparing the bandwidth of the PUSCH associated with the one or more service cells among the multiple service cells; comparing the number of resource blocks of the PUSCH associated with the one or more service cells among the multiple service cells; or comparing the number of resource elements of the PUSCH associated with the one or more service cells among the multiple service cells.

[0084] In one example, according to the wireless terminal, wherein: selecting the PUSCH associated with the one service cell includes: comparing the positions of the PUSCHs associated with the one or more service cells among the multiple service cells in the time domain to determine the number of the PUSCHs having the earliest positions in the time domain; selecting the PUSCH having the earliest position in the time domain based on the number of the PUSCHs having the earliest positions in the time domain being equal to one; and selecting the PUSCH associated with the service cell having the lowest service cell index among the one or more service cells among the multiple service cells based on the number of the PUSCHs having the earliest positions in the time domain being greater than one.

[0085] In one example, according to the wireless terminal, wherein: selecting the PUSCH associated with the one service cell includes: comparing the positions of the PUSCHs associated with the one or more service cells among the multiple service cells in the time domain to determine the number of the PUSCHs having the earliest positions in the time domain; selecting the PUSCH having the earliest position in the time domain based on the number of the PUSCHs having the earliest positions in the time domain being equal to one; and selecting the PUSCH associated with the one service cell based on at least one of the following items: comparing the multiple PUSCHs; comparing the serving cell indices of the one or more serving cells among the multiple serving cells; comparing the duration of the PUSCH associated with the one or more serving cells among the multiple serving cells in the time domain; comparing the number of symbols associated with the PUSCH associated with the one or more serving cells among the multiple serving cells; comparing the bandwidth of the PUSCH associated with the one or more serving cells among the multiple serving cells; comparing the number of resource blocks of the PUSCH associated with the one or more serving cells among the multiple serving cells; or comparing the number of resource elements of the PUSCH associated with the one or more serving cells among the multiple serving cells.

[0086] In one example, a method for a wireless terminal to perform channel state information (CSI) reporting in a multi-cell scheduling environment of a new radio (NR) system, the method comprising: receiving downlink control information (DCI) in a physical downlink control channel (PDCCH) associated with a first service cell among multiple service cells, the downlink control information (DCI) comprising: configuration information for one or more physical uplink shared channels (PUSCHs), each of the one or more PUSCHs being associated with a corresponding service cell among one or more of the multiple service cells; and trigger information, the trigger information being used to trigger generation of a CSI report at the wireless terminal; generating the CSI report in response to receiving the trigger information; selecting the PUSCH associated with one of the one or more service cells among the multiple service cells; and transmitting the CSI report on the PUSCH associated with the one service cell.

[0087] In one example, according to the method, wherein: the DCI also includes selection information indicating the PUSCH associated with the one serving cell; and the PUSCH associated with the one serving cell is selected based on the selection information.

[0088] In one example, according to the method, it also includes: receiving a radio resource control (RRC) message including selection information, the selection information indicating the PUSCH associated with the one service cell, wherein the PUSCH associated with the one service cell is selected based on the selection information.

[0089] In one example, according to the method, wherein: the PUSCH associated with the one serving cell is selected based on comparing serving cell indexes of the one or more serving cells in the plurality of serving cells.

[0090] In one example, according to the method, wherein: the PUSCH associated with the one serving cell is selected based on comparing positions of the PUSCHs associated with the one or more serving cells among the multiple serving cells in the time domain.

[0091] In one example, according to the method, wherein: the PUSCH associated with the one serving cell is selected based on comparing durations of the PUSCHs associated with the one or more serving cells among the multiple serving cells in the time domain.

[0092] In one example, according to the method, wherein: the PUSCH associated with the one serving cell is selected based on comparing the number of symbols associated with the PUSCH associated with the one or more serving cells among the plurality of serving cells.

[0093] In one example, according to the method, wherein: the PUSCH associated with the one serving cell is selected based on comparing bandwidths of the PUSCHs associated with the one or more serving cells among the plurality of serving cells.

[0094] In one example, according to the method, wherein: the PUSCH associated with the one serving cell is selected based on comparing the number of resource blocks of the PUSCH associated with the one or more serving cells among the multiple serving cells.

[0095] In one example, according to the method, wherein: the PUSCH associated with the one serving cell is selected based on comparing the number of resource elements of the PUSCH associated with the one or more serving cells among the multiple serving cells.

[0096] In one example, according to the method, wherein: selecting the PUSCH associated with the one serving cell includes selecting the PUSCH associated with the first serving cell.

[0097] In one example, according to the method, wherein: selecting the PUSCH associated with the one service cell includes: if the one or more service cells among the multiple service cells include the first service cell, selecting the PUSCH associated with the first service cell; and if the one or more service cells among the multiple service cells do not include the first service cell, selecting the PUSCH associated with the service cell with the lowest service cell index among the one or more service cells among the multiple service cells.

[0098] In one example, according to the method, wherein: selecting the PUSCH associated with the one service cell includes: if the one or more service cells among the multiple service cells include the first service cell, selecting the PUSCH associated with the first service cell; and if the one or more service cells among the multiple service cells do not include the first service cell, selecting the PUSCH associated with the one service cell based on at least one of the following items: comparing the service cell indexes of the one or more service cells among the multiple service cells; comparing the positions of the PUSCH associated with the one or more service cells among the multiple service cells in the time domain; comparing the duration of the PUSCH associated with the one or more service cells among the multiple service cells in the time domain; comparing the number of symbols associated with the PUSCH associated with the one or more service cells among the multiple service cells; comparing the bandwidth of the PUSCH associated with the one or more service cells among the multiple service cells; comparing the number of resource blocks of the PUSCH associated with the one or more service cells among the multiple service cells; or comparing the number of resource elements of the PUSCH associated with the one or more service cells among the multiple service cells.

[0099] In one example, according to the method, wherein: selecting the PUSCH associated with the one service cell includes: comparing the positions of the PUSCHs associated with the one or more service cells among the multiple service cells in the time domain to determine the number of the PUSCHs having the earliest positions in the time domain; selecting the PUSCH having the earliest position in the time domain based on the number of the PUSCHs having the earliest positions in the time domain being equal to one; and selecting the PUSCH associated with the one service cell based on comparing the service cell indexes of the one or more service cells among the multiple service cells based on the number of the PUSCHs having the earliest positions in the time domain being greater than one.

[0100] In one example, according to the method, wherein: selecting the PUSCH associated with the one service cell includes: comparing the positions of the PUSCHs associated with the one or more service cells among the multiple service cells in the time domain to determine the number of the PUSCHs having the earliest positions in the time domain; selecting the PUSCH having the earliest position in the time domain based on the number of the PUSCHs having the earliest positions in the time domain being equal to one; and selecting the PUSCH associated with the one service cell based on at least one of the following items: comparing the multiple comparing the serving cell indexes of the one or more serving cells among the multiple serving cells; comparing the duration of the PUSCH associated with the one or more serving cells among the multiple serving cells in the time domain; comparing the number of symbols associated with the PUSCH associated with the one or more serving cells among the multiple serving cells; comparing the bandwidth of the PUSCH associated with the one or more serving cells among the multiple serving cells; comparing the number of resource blocks of the PUSCH associated with the one or more serving cells among the multiple serving cells; or comparing the number of resource elements of the PUSCH associated with the one or more serving cells among the multiple serving cells.

[0101] In one example, a non-transitory machine-readable storage medium of a wireless terminal stores computer-executable instructions for performing channel state information (CSI) reporting in a multi-cell scheduling environment of a new radio (NR) system, the computer-executable instructions being used to: receive downlink control information (DCI) in a physical downlink control channel (PDCCH) associated with a first service cell among multiple service cells, the downlink control information (DCI) comprising: configuration information for one or more physical uplink shared channels (PUSCHs), each of the one or more PUSCHs being associated with a corresponding service cell among one or more of the multiple service cells; and trigger information, the trigger information being used to trigger generation of a CSI report at the wireless terminal; generate the CSI report in response to receiving the trigger information; select the PUSCH associated with one of the one or more service cells among the multiple service cells; and transmit the CSI report on the PUSCH associated with the one service cell. <Cross Reference>

[0102] This non-provisional application claims priority under 35 U.S.C. 119 to provisional application 63 / 407,535, filed on September 16, 2022, the entire contents of which are hereby incorporated by reference.

Claims

1. A wireless terminal for performing channel state information (CSI) reporting in a multi-cell scheduling environment, the wireless terminal comprising: Transmitter; Receiver; one or more non-transitory computer-readable media storing computer-executable instructions; and at least one processor coupled to the one or more non-transitory computer-readable media and configured to execute the computer-executable instructions to cause the wireless terminal to perform operations comprising: Receiving, by the receiver, downlink control information (DCI) in a physical downlink control channel (PDCCH) associated with a first serving cell among a plurality of serving cells, the downlink control information (DCI) comprising: configuration information for one or more physical uplink shared channels (PUSCHs), each of the one or more PUSCHs being associated with a corresponding serving cell of the one or more serving cells of the plurality of serving cells, and Trigger information, the trigger information being used to trigger a CSI report at the wireless terminal; generating the CSI report in response to receiving the trigger information; selecting the PUSCH associated with a serving cell of the one or more serving cells of the plurality of serving cells; and The CSI report is transmitted by the transmitter on the PUSCH associated with the one serving cell.

2. The wireless terminal according to claim 1, wherein: The operations include selecting the PUSCH associated with a serving cell having a lowest serving cell index among the one or more serving cells among the plurality of serving cells.

3. The wireless terminal according to claim 1, wherein: The DCI further includes selection information indicating the PUSCH associated with the one serving cell; and The PUSCH associated with the one serving cell is selected based on the selection information.

4. The wireless terminal according to claim 1, wherein the operation further comprises: A radio resource control (RRC) message including selection information is received by the receiver, the selection information indicating the PUSCH associated with the one serving cell, wherein the PUSCH associated with the one serving cell is selected based on the selection information.

5. The wireless terminal according to claim 1, wherein: The PUSCH associated with the one serving cell is selected based on comparing serving cell indexes of the one or more serving cells among the plurality of serving cells.

6. The wireless terminal according to claim 1, wherein: The PUSCH associated with the one serving cell is selected based on comparing locations of the PUSCHs associated with the one or more serving cells among the plurality of serving cells in the time domain.

7. The wireless terminal according to claim 1, wherein: The PUSCH associated with the one serving cell is selected based on comparing durations of the PUSCHs associated with the one or more serving cells of the plurality of serving cells in the time domain.

8. The wireless terminal according to claim 1, wherein: The PUSCH associated with the one serving cell is selected based on comparing the number of symbols associated with the PUSCH associated with the one or more serving cells of the plurality of serving cells.

9. The wireless terminal according to claim 1, wherein: The PUSCH associated with the one serving cell is selected based on comparing bandwidths of the PUSCHs associated with the one or more serving cells of the plurality of serving cells.

10. The wireless terminal according to claim 1, wherein: The PUSCH associated with the one serving cell is selected based on comparing the number of resource elements of the PUSCH associated with the one or more serving cells among the plurality of serving cells.

11. The wireless terminal according to claim 1, wherein: Selecting the PUSCH associated with the one serving cell includes selecting the PUSCH associated with the first serving cell.

12. The wireless terminal according to claim 1, wherein: Selecting the PUSCH associated with the one serving cell includes: If the one or more serving cells of the plurality of serving cells include the first serving cell, selecting the PUSCH associated with the first serving cell; and If the one or more serving cells among the plurality of serving cells do not include the first serving cell, selecting the PUSCH associated with a serving cell having a lowest serving cell index among the one or more serving cells among the plurality of serving cells.

13. The wireless terminal according to claim 1, wherein: Selecting the PUSCH associated with the one serving cell includes: If the one or more serving cells of the plurality of serving cells include the first serving cell, selecting the PUSCH associated with the first serving cell; and If the one or more serving cells of the plurality of serving cells do not include the first serving cell, selecting the PUSCH associated with the one serving cell based on at least one of the following: comparing serving cell indexes of the one or more serving cells among the plurality of serving cells, comparing positions of the PUSCH associated with the one or more serving cells of the plurality of serving cells in the time domain, comparing durations of the PUSCH associated with the one or more serving cells of the plurality of serving cells in the time domain, comparing the number of symbols associated with the PUSCH associated with the one or more serving cells of the plurality of serving cells, comparing bandwidths of the PUSCH associated with the one or more serving cells of the plurality of serving cells, comparing the number of resource blocks of the PUSCH associated with the one or more serving cells of the plurality of serving cells, or The number of resource elements of the PUSCH associated with the one or more serving cells of the plurality of serving cells is compared.

14. The wireless terminal according to claim 1, wherein: Selecting the PUSCH associated with the one serving cell includes: comparing positions of the PUSCHs associated with the one or more serving cells of the plurality of serving cells in the time domain to determine a number of the PUSCHs having an earliest position in the time domain; selecting the PUSCH having the earliest position in the time domain based on the number of the PUSCHs having the earliest position in the time domain being equal to one; and The PUSCH associated with a serving cell having a lowest serving cell index among the one or more serving cells among the plurality of serving cells is selected based on the number of the PUSCHs having the earliest position in the time domain being greater than one.

15. The wireless terminal according to claim 1, wherein: Selecting the PUSCH associated with the one serving cell includes: comparing positions of the PUSCHs associated with the one or more serving cells of the plurality of serving cells in the time domain to determine a number of the PUSCHs having an earliest position in the time domain; selecting the PUSCH having the earliest position in the time domain based on the number of the PUSCHs having the earliest position in the time domain being equal to one; and Based on the number of the PUSCHs having the earliest position in the time domain being greater than one, selecting the PUSCH associated with the one serving cell based on at least one of the following: comparing serving cell indexes of the one or more serving cells among the plurality of serving cells, comparing durations of the PUSCH associated with the one or more serving cells of the plurality of serving cells in the time domain, comparing the number of symbols associated with the PUSCH associated with the one or more serving cells of the plurality of serving cells, comparing bandwidths of the PUSCH associated with the one or more serving cells of the plurality of serving cells, comparing the number of resource blocks of the PUSCH associated with the one or more serving cells of the plurality of serving cells, or The number of resource elements of the PUSCH associated with the one or more serving cells of the plurality of serving cells is compared.

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