Method for determining frequency domain starting position for partial frequency sounding of SRS - Patents.com

Abstract

A wireless communication method is disclosed, the wireless communication method includes receiving configuration information including frequency sounding using a Sounding Reference Signal (SRS) configuration through downlink control information (DCI) or higher layer signaling. The method further includes configuring partial frequency sounding with transmission of an SRS based on the configuration information, and determining a frequency domain start position of the SRS for the partial frequency sounding. In another aspect, a terminal and a system are also disclosed.

Description

[Technical field]

[0001] One or more embodiments disclosed herein relate to a mechanism for defining a starting position in the frequency domain of a Sounding Reference Signal (SRS) for which subband sounding is configured. [Background technology]

[0002] SRS is a reference signal for the base station to determine the channel quality of the uplink channel for each subsection of the frequency domain. In 5G NR (New Radio) technology, new requirements have been identified for further enhancement of SRS transmission. New items in Rel.17 concern, for example, NR MIMO (Multiple-Input-Multiple-Output).

[0003] New ongoing research is targeted at SRS extensions in both Frequency Range (FR) 1 and FR 2. In particular, it is being considered to identify and specify extensions for aperiodic SRS triggering to facilitate more flexible triggering and / or reduced downlink control information (DCI) overhead / usage.

[0004] It is also under consideration to specify SRS switching for up to eight antennas (eg, xTyR, x={1,2,4}, y={6,8}).

[0005] Additionally, mechanisms to extend SRS capacity and / or coverage are considered to be evaluated and, where appropriate, specified, including SRS time bundling, increased SRS repetition, and / or partial sounding over frequency. This work considers how partial sounding over frequency can be introduced to extend SRS coverage and capacity.

[0006] More specifically, in the 3GPP RAN1 #104-e[2] meeting, partial frequency sounding of the SRS was agreed upon. In one orthogonal frequency-division multiplexing (OFDM) symbol,

number

number

[0007] [Non-Patent Document 1] 3GPP RP 193133, “New WID: Further enhancements on MIMO for NR”, December 2019 [Non-Patent Document 2] 3GPP RAN1 #104-e, “Chairman’s Notes”, February 2021 [Non-Patent Document 3] 3GPP, TS 38.211, “NR; Physical channels and modulation (Release 16)” Summary of the Invention

[0008] One or more embodiments of the present invention provide a terminal, the terminal including: a receiver that receives first configuration information for configuring a first parameter for determining a sequence length of a Sounding Reference Signal (SRS) and second configuration information for configuring a second parameter for identifying a start position of the SRS in a frequency domain; and a controller that controls partial frequency sounding involving transmission of the SRS based on the first configuration information and the second configuration information, the second configuration information being an RRC parameter and configured to set any one of a plurality of integer values. The value of the second parameter is represented by a different number of bits based on the value of the first parameter. .

[0009] In one aspect, the configuration information is signaled by Radio Resource Control (RRC) signaling.

[0010] In one aspect, the configuration information is dynamically updated / configured by one of downlink control information (DCI) and medium access control element (MAC CE).

[0011] Other embodiments and advantages of the present invention will be apparent from the following description and drawings. [Brief description of the drawings]

[0012] [Figure 1] 1 is a diagram showing a schematic configuration of a wireless communication system according to an embodiment. [Diagram 2] FIG. 2 is a diagram illustrating a schematic configuration of a base station according to an embodiment. [Diagram 3]1 is a schematic configuration of a UE according to an embodiment. [Figure 4] 1 shows a table of SRS sounding bandwidths. [Diagram 5] 1 shows an example of SRS bandwidth setting. [Figure 6] 1 shows an example of the start position of the frequency domain. [Figure 7] 1 shows an example of partial frequency sounding using SRS. [Figure 8] 1 shows an example of a frequency domain starting position for partial frequency sounding. [Figure 9] This is a part of Figure 8. [Figure 10] 1 shows an example of a frequency domain starting position for partial frequency sounding. [Figure 11] An example of parameter settings is shown below. [Figure 12] An example of parameter settings is shown below. [Figure 13] An example of parameter settings is shown below. [Figure 14] An example of parameter settings is shown below. [Figure 15] 1 shows an example of a frequency domain starting position for partial frequency sounding. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, in which like elements in different drawings are designated with like reference numerals to maintain consistency.

[0014] In the following description of the embodiments of the present invention, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without these specific details. In other instances, well-known features are not described in detail to avoid obscuring the present invention.

[0015] 1 illustrates a wireless communication system 1 according to one or more embodiments of the present invention. The wireless communication system 1 includes a user equipment (UE) 10, a base station (BS) 20, and a core network 30. The wireless communication system 1 may be an NR system. The wireless communication system 1 is not limited to the specific configuration described herein, and may be any type of wireless communication system, such as an LTE / LTE-Advanced (LTE-A) system.

[0016] The BS 20 may communicate uplink (UL) and downlink (DL) signals with the UEs 10 in the cell of the BS 20. The DL and UL signals may include control information and user data. The BS 20 may communicate the DL and UL signals with the core network 30 via a backhaul link 31. The BS 20 may be a gNodeB (gNB). The BS 20 may be referred to as a network (NW).

[0017] The BS 20 includes an antenna, a communication interface (e.g., an X2 interface) for communicating with neighboring BSs 20, a communication interface (e.g., an S1 interface) for communicating with the core network 30, and a central processing unit (CPU) such as a processor or circuit for processing signals transmitted to and received from the UE 10. The operation of the BS 20 may be realized by the processor processing or executing data and programs stored in a memory. However, the BS 20 is not limited to the above hardware configuration, and may be realized by any other suitable hardware configuration as will be understood by those skilled in the art. A large number of BSs 20 may be deployed to cover a wider service area of ​​the wireless communication system 1.

[0018] The UE 10 may communicate DL signals and UL signals including control information and user data with the BS 20 using a multiple input multiple output (MIMO) technology. The UE 10 may be an information processing device having a wireless communication function, such as a mobile station, a smartphone, a mobile phone, a tablet, a mobile router, or a wearable device. The wireless communication system 1 may include one or more UEs 10.

[0019] The UE 10 includes a CPU, e.g., a processor, a RAM (Random Access Memory), a flash memory, and a wireless communication device for transmitting and receiving wireless signals between the BS 20 and the UE 10. For example, the operation of the UE 10 described below may be realized by the CPU processing or executing data and programs stored in the memory. However, the UE 10 is not limited to the above hardware configuration, and may be configured to include, for example, a circuit for realizing the processing described below.

[0020] 1, the BS 20 may transmit a CSI reference signal (CSI-RS) to the UE 10. In response, the UE 10 may transmit a CSI report to the BS 20. Similarly, the UE 10 may transmit an SRS to the BS 20.

[0021] (BS composition) Hereinafter, a BS 20 according to an embodiment of the present invention will be described with reference to Fig. 2. Fig. 2 is a diagram for explaining a schematic configuration of the BS 20 according to an embodiment of the present invention. The BS 20 may include a plurality of antennas (antenna element group) 201, an amplifier unit 202, a transceiver unit (transmitter / receiver) 203, a baseband signal processor 204, a call processor 205, and a transmission path interface 206.

[0022] User data transmitted in DL from the BS 20 to the UE 10 is input to the baseband signal processing unit 204 from the core network via the transmission path interface 206 .

[0023] In the baseband signal processing unit 204, the signals are subjected to Packet Data Convergence Protocol (PDCP) layer processing, division and joining of user data, RLC layer transmission processing such as Radio Link Control (RLC) retransmission control transmission processing, Medium Access Control (MAC) retransmission control including HARQ transmission processing, scheduling, transmission format selection, channel coding, Inverse Fast Fourier Transform (IFFT) processing, precoding processing, etc. Subsequently, the resulting signals are transferred to each transceiver unit 203. As for the DL control channel signal, transmission processing including channel coding and inverse fast Fourier transform is performed, and the resulting signals are transferred to each transceiver unit 203.

[0024] The baseband signal processing unit 204 notifies each UE 10 of control information (system information) for communication within the cell by higher layer signaling (e.g., RRC (Radio Resource Control) signaling and a broadcast channel). The information for communication within the cell includes, for example, a UL system bandwidth or a DL system bandwidth.

[0025] In each transmitting / receiving unit 203, precoding is performed for each antenna, and a frequency conversion process to a radio frequency band is performed on the baseband signal output from the baseband signal processing unit 204. The amplifier unit 202 amplifies the radio frequency signal that has been frequency converted, and the resulting signal is transmitted from the antenna 201.

[0026] With regard to data transmitted on the UL from UE 10 to BS 20, a radio frequency signal is received by each antenna 201, amplified by amplifier section 202, frequency converted into a baseband signal by transceiver section 203, and input to baseband signal processing section 204.

[0027] The baseband signal processor 204 performs FFT processing, IDFT processing, error correction decoding processing, MAC retransmission control reception processing, and RLC layer and PDCP layer reception processing on user data contained in the received baseband signal. The resulting signal is then transferred to the core network via the transmission path interface 206. The call processor 205 performs call processing such as setting up and releasing communication channels, manages the state of the BS 20, and manages radio resources.

[0028] (UE configuration) Hereinafter, a UE 10 according to an embodiment of the present invention will be described with reference to Fig. 3. Fig. 3 shows a schematic configuration of the UE 10 according to the embodiment of the present invention. The UE 10 has a plurality of UE antennas 101, an amplifier unit 102, a circuit 103 including a transceiver unit (transmitter / receiver) 1031, a controller 104, and an application unit 105.

[0029] For DL, radio frequency signals received at the UE antenna 101 are amplified in each amplifier unit 102, and frequency converted to baseband signals in the transmission / reception unit 1031. The control unit 104 performs reception processing such as FFT processing, error correction decoding, and retransmission control on these baseband signals. DL user data is transferred to the application unit 105. The application unit 105 performs processing related to layers higher than the physical layer and MAC layer. In the downlink data, broadcast information is also transferred to the application unit 105.

[0030] On the other hand, UL user data is input from the application unit 105 to the control unit 104. In the control unit 104, retransmission control (Hybrid ARQ) transmission processing, channel coding, precoding, DFT processing, IFFT processing, etc. are performed, and the resulting signals are transferred to each transmission / reception unit 1031. In the transmission / reception unit 1031, the baseband signal output from the control unit 104 is converted into a radio frequency band. Thereafter, the frequency-converted radio frequency signal is amplified in the amplifier unit 102 and then transmitted from the antenna 101.

[0031] As mentioned above, partial frequency sounding of the SRS is considered. One or more embodiments described herein may provide a method for defining a frequency domain starting position for partial frequency sounding of the SRS.

[0032] In one or more embodiments, the SRS bandwidth may be set based on the values ​​shown in FIG. 4. Specifically, in FIG. SRS The present example focuses on an example using an index value of 13. In this example, there may be a single bandwidth (BW) region for the SRS with a length of 48 RBs. Or there may be two BW regions for the SRS, each with a length of 24 RBs. Or there may be four BW regions for the SRS, each with a length of 12 RBs. Or there may be twelve BW regions for the SRS, each with a length of 4 RBs.

[0033] In other words, with different SRS bandwidths, the available bandwidth may be divided into different numbers of portions. Such a feature is useful in frequency hopping of SRS, where the SRS transmission is divided into a series of narrowband transmissions that cover the entire bandwidth region of interest. SRS and B. SRS The value of may be set by higher layer signaling.

[0034] FIG. 5 illustrates one or more embodiments of SRS bandwidth configuration based on the example of FIG. SRS sets the SRS bandwidth set as above, while B SRS selects one bandwidth from a configured set and divides the available bandwidth into a different number of parts. SRS As σ increases, the size of the portions decreases. In other words, as the number of sounding bands increases, the number of frequency portions also increases.

[0035] FIG. 6 shows an example of a start position in the frequency domain. The start position in the frequency domain of the SRS may be determined by a cell-specific SRS bandwidth setting configured by higher layer signaling. Specifically, as illustrated in FIG. 6, the start position is determined based on Equation (1).

number

number

[0036] To explain,

number

number

number

number

number

number

number

number

[0037] As mentioned above, N b The values ​​of are given in selected rows of FIG. 4. To explain, the frequency hopping parameter b hop B SRS If the frequency hopping is greater than or equal to the frequency location index n b As defined by the above formula, n remains a constant value for all OFDM symbols of the SRS resource. RRC indicates the position in the frequency domain. Therefore, the starting position in the frequency domain

number

[0038] In one or more embodiments, referring to the example shown in Figure 7, partial frequency sounding using SRS may be performed. In particular, using higher layer signaling or DCI, the UE is configured to consider partial bandwidth SRS transmission. One or more potential advantages of partial frequency sounding include the possibility of:

[0039] Compared to full-band sounding, partial-band sounding (or partial frequency sounding) offers a way to increase the power per subcarrier since the available transmit power is allocated over a smaller portion of the bandwidth, and further enhances the SRS capacity since it gives the network the opportunity to multiplex more UE ports in the remaining frequency resources.

[0040] To explain, in the example shown in Figure 7, partial frequency sounding is configured for an existing SRS transmission that uses 24 RBs. After the partial SRS configuration, the SRS transmission may be performed over only half of the available bandwidth in each hop.

[0041] One or more potential drawbacks are that frequency selective scheduling over the entire DL transmission bandwidth may not be feasible since the entire band is not free from SRS transmission within a slot. Furthermore, due to partial frequency sounding, the NW may not be able to extract the interference structure of the channel.

[0042] 8 illustrates an example of a frequency domain starting position for partial frequency sounding according to one or more embodiments. As shown in FIG. 8, the set SRS sounding bandwidth

number

number

number

[0043] Figure 9 is a portion of the partial frequency sounding of Figure 8. A new formula may be required to determine the frequency domain starting position for the partial frequency sounding as shown in Figure 9. In view of the above discussion, the formula for the SRS sequence length in Figure 6 may be required to be updated as follows:

number

[0044] In the above formula, P F If is not set, P F will take the value of 1, and the formula will be the same as the formula for the SRS sequence length incorporated in Figure 6. Also, when determining the starting position for partial frequency sounding,

number

[0045] Furthermore, as mentioned above, in order to identify the start of the sounding band using higher layer signaling or DCI, an additional parameter

number

number

[0046] In the above formula, the parameter

number

number

number

number

number

[0047] 10 illustrates another example of a frequency domain starting location for partial frequency sounding in accordance with one or more embodiments. In the example of FIG.

number

number

number

[0048] Configured

number

number

[0049] In the above formula, the parameter

number

number

number

number

[0050] Alternatively, in one or more embodiments, higher layer signaling or DCI may be used to provide the parameter

number

number

[0051] In the above formula, the parameter

number

number

number

number

[0052] Therefore, a new RRC parameter may need to be introduced to set the value of γ. In the example of FIG. 11, the new RRC parameter may be PFSfreqDomainPosition, which may take an integer value between 0 and 67, according to one or more embodiments. Note that this new RRC parameter may be configured per SRS resource or per SRS resource set, where each resource set may include multiple SRS resources transmitted in different symbols. Furthermore, this embodiment may be used to determine the starting position in the frequency domain for both the cases with and without SRS hopping.

[0053] FIG. 12 illustrates an example of the setting of the parameter γ, according to one or more embodiments. Specifically, the value of γ may be set implicitly by associating it with the DCI codepoint of the SRS request field that triggers the DCI. As shown in FIG. 12, the DCI codepoint of the SRS request field may have binary values ​​of "00", "01", "10" and "11" (if the DCI codepoint of the SRS request field is "00", no SRS resource set is selected) corresponding to γ1, γ2, γ3 that are set using RRC signaling. The associated RRC parameter for setting γ remains the predefined PFSfreqDomainPosition. Furthermore, this embodiment may be used to determine the starting position of the frequency domain for both the cases with and without SRS hopping.

[0054] FIG. 13 illustrates an example of parameter γ configuration, according to one or more embodiments. Specifically, as described above, each SRS resource set may be associated with a specific γ value. As a result, the NW may implicitly configure a specific value for the parameter γ by selecting an appropriate SRS resource set(s) using a code point of the DCI. As shown in the example of FIG. 13, each SRS resource set in the table has a specific γ value (e.g., configured using RRC signaling). The NW may then implicitly configure a value for γ by selecting a specific SRS resource set from the table. Optionally, in the case of aperiodic SRS (A-SRS) triggering using DCI without data / CSI scheduling, an unused field in DCI format 0_1 / 0_2 may also be repurposed to indicate the γ value. Furthermore, this embodiment may be used to determine the starting position in the frequency domain for both cases of SRS hopping and no hopping.

[0055] 14 illustrates an example of the configuration of the parameter γ, according to one or more embodiments. In this example, the value of the parameter γ may be explicitly configured using the code points of the new DCI field. For example, the code points of the new DCI field may have binary values ​​of "00", "01", "10" and "11", corresponding to γ1, γ2, γ3 and γ4. Furthermore, this embodiment may be used to determine the starting position of the frequency domain for both the cases with and without SRS hopping.

[0056] FIG. 15 illustrates an example of a frequency domain starting position for partial frequency sounding according to one or more embodiments. Specifically, the UE may be configured with a set of contiguous RBs for SRS transmission within the SRS bandwidth configured in consideration of the bitmap using higher layer signaling or DCI. As shown in the example of FIG. 15,

number

number

[0057] In the same example where a set of consecutive RBs is configured for SRS transmission, Fig. 15 shows an example where the index of the starting RB is 4. In this example, it is also possible to dynamically change the index of the starting RB using higher layer signaling such as DCI or MAC-CE, RRC, etc. Furthermore, this embodiment may be used to determine the starting position in the frequency domain for both the cases where SRS hopping is performed and where hopping is not performed.

[0058] The above embodiment regarding partial frequency sounding of SRS may be applicable only if the corresponding UE capability is reported and the corresponding higher layer parameters are configured. For example, as part of the capability report, the UE reports whether it can perform partial frequency sounding of SRS. As another example, as part of its capability report, the UE reports which P F The UE reports whether it can support the value. If the UE reports its capability, the NW may configure partial frequency sounding of the SRS. Those skilled in the art will understand that additional scenarios may be applicable with corresponding higher layer parameters added and / or configured.

[0059] Variations Information, signals and / or other elements described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0060] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0061] Input and output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0062] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., downlink control information (DCI), uplink control information (UCI)), higher layer signaling (e.g., radio resource control (RRC) signaling, broadcast information (master information block (MIB), system information block (SIB), medium access control (MAC) signaling, etc.), other signals, or a combination of these.

[0063] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as "software," "firmware," "middleware," "microcode," "hardware description language," or otherwise.

[0064] Additionally, software, instructions, information, etc. may be transmitted or received over a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair cable, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave, etc.), these wired and / or wireless technologies are included within the definition of transmission media.

[0065] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0066] In this disclosure, the terms "base station (BS)", "radio base station", "eNB", "gNB", "cell", "sector", "cell group", "carrier", "component", and "component carrier" may be used interchangeably. A base station may be called a "fixed station", "NodeB", "eNodeB (eNB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "femtocell", "small cell", and the like.

[0067] A base station can accommodate one or more (e.g., three) cells (also called "sectors"). When a base station accommodates multiple cells, the entire coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small base station for indoor use (RRH (Remote Radio Head))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or a base station subsystem that provides communication services in this coverage.

[0068] In this disclosure, the terms "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" may be used interchangeably.

[0069] A mobile station may also be referred to as a "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," or some other suitable terminology.

[0070] Furthermore, a radio base station in the present disclosure may be interpreted as a user terminal. For example, each aspect / embodiment of the present disclosure may be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between multiple user terminals (e.g., D2D (Device-to-Device)). In this case, the user terminal 20 may have the functions of the radio base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be interpreted as "side." For example, an uplink channel may be interpreted as a side channel.

[0071] Similarly, a user terminal in the present disclosure may be interpreted as a radio base station. In this case, the radio base station may have the functions of the above-mentioned user terminal.

[0072] In the present disclosure, an operation performed by a base station may be performed by its upper node in some cases. It is clear that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, an MME (Mobility Management Entity) and an S-GW (Serving-Gateway)), or a combination thereof.

[0073] One or more embodiments described in this disclosure may be used alone, in combination, or switched in execution. In addition, the order of the process steps, sequences, flow charts, etc. used to describe aspects / embodiments in this disclosure may be changed as long as there is no contradiction. For example, the various methods described in this disclosure present elements of various steps using an example order, but are not limited to the particular order presented therein.

[0074] One or more embodiments described in the present disclosure may be applied to systems using LTE (Long Term Evolution), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), other suitable wireless communication methods, and / or next generation systems enhanced based on these.

[0075] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0076] Any reference to an element using a designation such as "first," "second," etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.

[0077] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be "judging," calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, database, or another data structure), ascertaining, etc. Also, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in a memory), etc. Additionally, "determination" as used in this disclosure may be interpreted as "determining" resolving, selecting, choosing, assuming, establishing, comparing, etc. In other words, "determination" may be interpreted as "deciding" to perform some action.

[0078] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between the elements may be physical, logical, or a combination thereof. For example, "connected" may be interpreted as "access."

[0079] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, and / or printed electrical connections, as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0080] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0081] Furthermore, the term "or" as used in the specification or claims is not intended to be an exclusive or.

[0082] Although the present invention has been described in detail above, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present disclosure. The present invention can be implemented in various modifications and alterations without departing from the spirit and scope of the invention defined based on the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the invention according to the present disclosure.

[0083] Another example The above examples and embodiments may be combined with each other, and various features of the examples may be combined with each other in various combinations. The present invention is not limited to the specific combinations disclosed herein.

[0084] While the present disclosure has been described with respect to only a limited number of embodiments, it will be apparent to those skilled in the art, having the benefit of this disclosure, that various other embodiments may be devised without departing from the scope of the invention, which scope should therefore be limited only by the scope of the appended claims.

Claims

1. A receiver that receives first setting information for setting a first parameter for determining a sequence length of a sounding reference signal (SRS) and second setting information for setting a second parameter for identifying a start position of a frequency domain of the SRS; A control unit that controls partial frequency sounding involving transmission of the SRS based on the first setting information and the second setting information, the second configuration information is an RRC parameter, and is set to one of a plurality of integer values; The value of the second parameter is indicated by a different number of bits based on the value of the first parameter.

2. The terminal according to claim 1 , wherein the value of the second parameter is 0 when the second parameter is not set by the second setting information.

3. The terminal according to claim 1 , wherein the second configuration information is an RRC parameter related to a resource of the SRS.

4. The terminal according to claim 1 , wherein the value of the first parameter is 1 when the first parameter is not set by the first setting information.

5. receiving first setting information for setting a first parameter for determining a sequence length of a sounding reference signal (SRS) and second setting information for setting a second parameter for identifying a start position of the SRS in a frequency domain; and controlling partial frequency sounding involving transmission of the SRS based on the first setting information and the second setting information; the second configuration information is an RRC parameter, and is set to one of a plurality of integer values; A method of wireless communication, wherein the value of the second parameter is represented by a different number of bits based on the value of the first parameter.

6. A transmitter that transmits first setting information for setting a first parameter for determining a sequence length of a sounding reference signal (SRS) and second setting information for setting a second parameter for identifying a start position of a frequency domain of the SRS; A control unit that instructs SRS transmission of partial frequencies based on the first setting information and the second setting information, the second configuration information is an RRC parameter, and is set to one of a plurality of integer values; A base station, wherein the value of the second parameter is indicated by a different number of bits based on the value of the first parameter.

7. A system including a terminal and a base station, The terminal includes: A receiver that receives first setting information for setting a first parameter for determining a sequence length of a sounding reference signal (SRS) and second setting information for setting a second parameter for identifying a start position of a frequency domain of the SRS; A control unit that controls partial frequency sounding involving transmission of the SRS based on the first setting information and the second setting information, the second configuration information is an RRC parameter, and is set to one of a plurality of integer values; the value of the second parameter is represented by a different number of bits based on the value of the first parameter; The base station, A system comprising a transmitter that transmits the first setting information and the second setting information.

Images