Method for determining the start position of the frequency domain of an srs part

Abstract

A method of wireless communication is disclosed that includes receiving configuration information via downlink control information (DCI) or higher layer signaling, the configuration information including frequency sounding with sounding reference signal (SRS) configuration. The method further includes configuring partial frequency sounding with SRS transmission based on the configuration information, and determining a frequency domain starting position of the SRS for the partial frequency sounding. In other aspects, a terminal and a system are also disclosed.

Description

Technical Field

[0001] One or more embodiments disclosed herein relate to one or more mechanisms for defining a start position in the frequency domain for a probe reference signal (SRS) configured with partial frequency band detection. Background Technology

[0002] SRS is a reference signal used by base stations to determine the channel quality of the uplink channel in each sub-part of a frequency region. In 5G New Radio (NR) technology, new requirements are being identified to further enhance SRS transmission. New items in version 17 involve, for example, NR Multiple-Input Multiple-Output (MIMO).

[0003] In the ongoing new research, SRS enhancements are targeted at both frequency ranges (FR) 1 and FR2. In particular, research is underway to identify and specify enhancements for aperiodic SRS triggering to facilitate more flexible triggering and / or reduce downlink control information (DCI) overhead / usage.

[0004] In addition, research is underway to specify SRS switching for up to 8 antennas (e.g., xTyR, x = {1, 2, 4} and y = {6, 8}).

[0005] Furthermore, the study is evaluating, and if necessary, specifying one or more of the following mechanisms to enhance SRS capacity and / or coverage, including SRS time bundling, increased SRS repetition, and / or cross-frequency partial detection. In this work, mechanisms for introducing cross-frequency partial detection to enhance SRS coverage and capacity are discussed.

[0006] More specifically, at the 3GPP RAN1#104-e[2] meeting, an agreement was reached on partial frequency detection for SRS. In an Orthogonal Frequency Division Multiplexing (OFDM) symbol... Under the condition of sending SRS in a contiguous resource block (RB), P F The value is at least one of {2, [3], 4, 8}. Instructions by B SRS and C SRS The number of RBs configured. No new sequence including length is introduced during transmission. Further topics can be explored in the future, including the use of non-integer values ​​for transmitting SRS, applicability for frequency hopping and non-frequency hopping, and methods for determining RB locations and P. F The detailed signaling mechanism is described. This application considers a method for defining the frequency domain start position of the SRS partial frequency probe.

[0007] Citation List

[0008] Non-patent references

[0009] [Non-Patent Reference 1] 3GPP RP 193133, “New WID: Further enhancements on MIMO for NR”, December 2019.

[0010] [Non-Patent Reference 2] 3GPP RAN1#104-e, “Chairman's Notes”, February 2021.

[0011] [Non-patent document 3] 3GPP TS 38.211, "NR; Physical channels and modulation (Release 16)". Summary of the Invention

[0012] One or more embodiments of the present invention provide a wireless communication method, comprising: receiving configuration information including frequency detection configured using a probe reference signal (SRS) via downlink control information (DCI) or higher-layer signaling, configuring partial frequency detection based on the configuration information, and determining the frequency domain start position of the SRS partial frequency detection.

[0013] In one aspect, configuration information is transmitted via signaling through Radio Resource Control (RRC) signaling.

[0014] In one respect, the configuration information is dynamically updated / configured by either the Downlink Control Information (DCI) or the Media Access Control Element (MAC-CE).

[0015] Other embodiments and advantages of the present invention will become apparent from the description and drawings. Attached Figure Description

[0016] Figure 1 This is a diagram illustrating a schematic configuration of a wireless communication system according to an embodiment.

[0017] Figure 2 This is a diagram illustrating a schematic configuration of a base station according to an embodiment.

[0018] Figure 3 This is an illustrative configuration of the UE according to an embodiment.

[0019] Figure 4 This is a table of SRS probe bandwidth.

[0020] Figure 5 An example of SRS bandwidth configuration is shown.

[0021] Figure 6 An example of the starting position in the frequency domain is shown.

[0022] Figure 7 An example of partial frequency detection using SRS is shown.

[0023] Figure 8 An example of the frequency domain starting position for partial frequency probing is shown.

[0024] Figure 9 yes Figure 8 Part of it.

[0025] Figure 10 An example of the frequency domain starting position for partial frequency probing is shown.

[0026] Figure 11 An example of parameter configuration is shown.

[0027] Figure 12 An example of parameter configuration is shown.

[0028] Figure 13 An example of parameter configuration is shown.

[0029] Figure 14 An example of parameter configuration is shown.

[0030] Figure 15 An example of the frequency domain starting position for partial frequency probing is shown. Detailed Implementation

[0031] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. For consistency, the same elements in the various drawings are indicated by the same reference numerals.

[0032] In the following description of embodiments of the invention, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without these specific details. In other instances, well-known features have not been described in detail to avoid obscuring the invention.

[0033] Figure 1 A wireless communication system 1 according to one or more embodiments of the present invention is described. 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.

[0034] BS20 can transmit uplink (UL) and downlink (DL) signals with UE 10 within its cell. DL and UL signals may include control information and user data. BS20 can transmit DL and UL signals with core network 30 via backhaul link 31. BS20 can be a gNodeB (gNB). BS20 can be referred to as network (NW) 20.

[0035] BS20 includes an antenna, a communication interface (e.g., an X2 interface) for communicating with adjacent BS20, a communication interface (e.g., an S1 interface) for communicating with the core network 30, and a CPU (central processing unit), such as a processor or circuitry for processing signals transmitted and received by UE10. Operation of BS20 can be achieved by the processor processing or executing data and programs stored in memory. However, BS20 is not limited to the hardware configuration described above and can be implemented by other suitable hardware configurations understood by those skilled in the art. Multiple BSs 20 can be configured to cover a wider service area of ​​the wireless communication system 1.

[0036] UE 10 can use Multiple-Input Multiple-Output (MIMO) technology to transmit DL and UL signals, including control information and user data, to BS 20. UE 10 can be a mobile station, smartphone, cellular phone, tablet computer, mobile router, or information processing device with radio communication capabilities, such as a wearable device. Wireless communication system 1 may include one or more UE 10s.

[0037] UE 10 includes a CPU such as a processor, RAM (random access memory), flash memory, and radio communication equipment to transmit / receive radio signals to / from BS20 and UE 10. For example, the operation of UE 10 described below can be implemented by the CPU processing or executing data and programs stored in memory. However, UE 10 is not limited to the hardware configuration described above and can be configured with circuitry, for example, for implementing the processing described below.

[0038] like Figure 1 As shown, BS20 can send a CSI reference signal (CSI-RS) to UE10. In response, UE10 can send a CSI report to BS20. Similarly, UE10 can send an SRS to BS20.

[0039] (BS configuration)

[0040] The following will refer to Figure 2 BS20 is described according to an embodiment of the present invention. Figure 2This is a diagram illustrating a schematic configuration of a BS20 according to an embodiment of the present invention. The BS20 may include multiple antennas (antenna element groups) 201, an amplifier 202, a transceiver (transmitter / receiver) 203, a baseband signal processor 204, a call processor 205, and a transmission path interface 206.

[0041] User data transmitted from BS20 to UE20 on DL is input from the core network to baseband signal processor 204 via transmit path interface 206.

[0042] In the baseband signal processor 204, the signal undergoes Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer transmission processing (such as user data partitioning and coupling, and RLC retransmission control transmission processing), and Medium Access Control (MAC) retransmission control (including, for example, HARQ transmission processing, scheduling, transmission format selection, channel coding, Inverse Fast Fourier Transform (IFFT) processing, and precoding processing). The resulting signal is then transmitted to each transceiver 203. For signals in the DL control channel, transmission processing including channel coding and Inverse Fast Fourier Transform is performed, and the resulting signal is sent to each transceiver 203.

[0043] The baseband signal processor 204 notifies each UE 10 of control information (system information) for communication within the cell via higher-layer signaling (e.g., Radio Resource Control (RRC) signaling and broadcast channels). Information for communication within the cell includes, for example, UL or DL ​​system bandwidth.

[0044] In each transceiver 203, the baseband signal pre-coded for each antenna and output from the baseband signal processor 204 undergoes frequency conversion processing to the radio frequency band. The amplifier 202 amplifies the frequency-converted radio frequency signal and transmits the resulting signal from the antenna 201.

[0045] For data to be transmitted from UE 10 to BS20 on UL, the radio frequency signal is received in each antenna 201, amplified in amplifier 202, frequency-converted and converted into a baseband signal in transceiver 203, and then input to baseband signal processor 204.

[0046] The baseband signal processor 204 performs FFT processing, IDFT processing, error correction decoding, MAC retransmission control reception processing, and RLC and PDCP layer reception processing on the user data included in the received baseband signal. Then, the resulting signal is transmitted to the core network via the transmission path interface 206. The call processor 205 performs call processing, such as establishing and releasing communication channels, managing the state of the BS20, and managing radio resources.

[0047] (UE configuration)

[0048] The following will refer to Figure 3 UE 10 is described according to an embodiment of the present invention. Figure 3 This is a schematic configuration of UE 10 according to an embodiment of the present invention. UE 10 has multiple UE antennas 101, amplifiers 102, circuitry 103 including transceivers (transmitters / receivers) 1031, controllers 104, and applications 105.

[0049] For DL, the radio frequency signal received in the UE antenna S101 is amplified in various amplifiers 102 and undergoes frequency conversion of the baseband signal in the transceiver 1031. In the controller 104, these baseband signals undergo receive processing, such as FFT processing, error correction decoding, and retransmission control. DL user data is transmitted to application 105. Application 105 performs processing related to higher layers above the physical and MAC layers. In downlink data, broadcast information is also transmitted to application 105.

[0050] On the other hand, UL user data is input from application 105 to controller 104. In controller 104, retransmission control (hybrid ARQ) transmission processing, channel coding, precoding, DFT processing, IFFT processing, etc., are performed, and the resulting signals are transmitted to each transceiver 1031. In transceiver 1031, the baseband signal output from controller 104 is converted to an RF frequency band. Then, the frequency-converted RF signal is amplified in amplifier 102 and then transmitted from antenna 101.

[0051] As described above, considerations have been given regarding SRS partial frequency detection. One or more embodiments described herein can provide a method for defining the frequency domain starting position for SRS partial frequency detection.

[0052] In one or more embodiments, it can be based on Figure 4 The values ​​shown are used to configure the SRS bandwidth. Specifically, Figure 4 Focusing on the index value C SRS Example 13. In this example, there can be a single bandwidth (BW) region for SRS with a length of 48 RBs. Alternatively, there can be two BW regions for SRS, each with a length of 24 RBs. Alternatively, there can be four BW regions for SRS, each with a length of 12 RBs. Still alternatively, there can be twelve regions for SRS, each with a length of 4 RBs. In other words, by utilizing different SRS bandwidths, the available bandwidth can be divided into different numbers of segments. These characteristics can be useful in SRS frequency hopping when SRS transmissions are divided into a series of narrowband transmissions covering the entire bandwidth of interest. And C SRS and BSRS The value can be configured by higher-level signaling.

[0053] Figure 5 The description shows the basis Figure 4 This is an example of one or more embodiments of SRS bandwidth configuration. (Index C) SRS Configure the SRS bandwidth set as described above, and simultaneously B SRS Select a bandwidth from the configured set and divide the available bandwidth into different numbers of portions. Specifically, with B SRS As the number of detection bands increases, the size of the frequency partitions decreases. In other words, as the number of detection bands increases, the number of frequency partitions also increases.

[0054] Figure 6 An example of the frequency domain start position is shown. The frequency domain start position of the SRS can be determined by the cell-specific SRS bandwidth configuration configured by higher-layer signaling. Specifically, as... Figure 6 The starting position can be determined based on equation (1).

[0055]

[0056] in

[0057]

[0058]

[0059]

[0060] To explain, Based on n shift The calculated value, and It involves adjusting the frequency domain shift value allocated by the SRS relative to the reference grid point and transmitting it via higher-layer signaling. Indicates the number of subcarriers in the RB. It is the offset of the transmission comb parameters.

[0061] also, It is the length of the probe reference signal sequence. More specifically, based on m SRS,b , K TC and B SRS Determine m SRS,b and N b The value in Figure 4 The selected row is given. As mentioned above, Indicates the number of subcarriers in the RB. K TCThis is the transport comb parameter specified by the higher-layer signaling. Select B from the {0, 1, 2, 3} given by the fields included in the higher-layer parameters. SRS .

[0062] As mentioned above, in Figure 4 The N given in the selected row b Value. To explain, when the frequency hopping parameter b... hop Greater than or equal to B SRS When the value is specified, frequency hopping can be disabled, and for all OFDM symbols of the SRS resource defined in the above equation, the frequency location index n... b It remains a constant value. n in the above equation... RRC Indicates the frequency domain location.

[0063] Therefore, the starting position of the frequency domain can be defined based on the above equations and parameters.

[0064] Reference Figure 7 In one or more embodiments of the examples shown, partial frequency probing utilizing SRS can be performed. Specifically, using higher-layer signaling or DCI, the UE is configured to account for partial bandwidth SRS transmissions. One or more potential advantages of partial frequency probing include the following possibilities.

[0065] Compared to full-band detection, partial-band detection (or partial-frequency detection) provides a way to increase power per subcarrier because the available transmit power is allocated across a smaller bandwidth partition. Furthermore, it enhances SRS capacity by providing the network with the opportunity to reuse more UE ports on remaining frequency resources.

[0066] To illustrate, in Figure 7 In the example shown, a conventional SRS transmission with 24 RBs is configured with partial frequency sensing. With partial SRS configuration, the SRS transmission can be completed on only half of the available bandwidth within each hop.

[0067] One or more potential drawbacks are that frequency-selective scheduling across the entire DL transmission bandwidth may be infeasible because no SRS transmissions are detected from the time slots. Furthermore, due to partial frequency sensing, NW may be unable to extract the interference structure of the channel.

[0068] Figure 8 An example of a frequency domain start position for partial frequency detection according to one or more embodiments is shown. Figure 8 As shown, only the configured SRS probe bandwidth is considered. A portion of it is used for UL detection. More specifically, in Figure 8 In the example, P is used to determine the actual SRS probe bandwidth. FThe factor is 2. Therefore, only the configured bandwidth is considered. Half of it is used for UL detection. Therefore, additional parameters may be needed to identify the starting position of the frequency domain used for partial frequency detection.

[0069] Figure 9 yes Figure 8 The frequency detection section. In order to determine such... Figure 9 The starting positions of the frequency domain for the partial frequencies shown may require new equations. In light of the above discussion, Figure 6 The equation for the length of the SRS sequence may need to be updated as follows:

[0070]

[0071] Where P F ∈{2,3,4,8}.

[0072] In the above equation, if P F If not configured, then P F It will have a value of 1, and the equation will be with Figure 6 The equation for the length of the SRS sequence captured is the same. Additionally, when determining the starting position of partial frequency detection, The definition can be related to Figure 6 The same as in [the previous sentence].

[0073] In addition, as mentioned above, additional parameters may need to be configured. The starting position of the probe band is identified using higher-layer signaling or DCI. Therefore, Figure 6 The equation for the frequency domain starting position of the SRS portion of the frequency detection may need to be updated as follows:

[0074]

[0075] In the above equation, if the parameter If not configured, then It will have a value of 0, and this equation can be considered for determining the starting position and compared with... Figure 6 The equations for the starting position of the frequency domain are the same. Note that here is... This parameter is given as a Physical Resource Element (PRE). However, it can also be given in a Physical Resource Block (PRB). In this case, the equation may need to be modified accordingly. Optionally, It can be configured to a common value for all ports. In other words, Furthermore, this embodiment can be used to determine the frequency domain start position for both SRS frequency hopping and non-frequency hopping cases.

[0076] Figure 10Another example of a frequency domain start position for partial frequency detection, according to one or more embodiments, is shown. Figure 10 In the example, only use Bits are configured via higher-level signaling or DCI. And P F It is configured as 4 (therefore 2 bits are used for configuration) Therefore, as Figure 10 As shown, there are four possible frequency domain starting positions for SRS partial frequency detection.

[0077] Based on the configuration The value of can be calculated as follows: Figure 10 The starting position of the frequency domain for a portion of the frequencies:

[0078]

[0079] In the above equation, if the parameter If not configured, then It will have a value of 0. Optionally, It can be configured to a common value for all ports. In other words,

[0080] Alternatively, in one or more embodiments, higher-layer signaling or DCI is used, parameters The frequency domain start position is configured to identify a portion of the frequency range as follows:

[0081]

[0082] In the above equation, if the parameter If not configured, then It will have a value of 0. Optionally, It can be configured to a common value for all ports. In other words, Furthermore, this embodiment can be used to determine the frequency domain start position for both SRS frequency hopping and non-frequency hopping cases.

[0083] Given the above, it may be necessary to introduce a new RRC parameter to configure the value of γ. Figure 11 In the examples, according to one or more embodiments, the new RRC parameter can be a PFSfreqDomainPosition with an integer value from 0 to 67. Note that this new RRC parameter can be configured for each SRS resource or for each set of SRS resources, where each resource set can include multiple SRS resources transmitted at different symbols. Additionally, this embodiment can be used to determine the frequency domain start position for both hopped and non-hopped SRS scenarios.

[0084] Figure 12An example of configuring parameter γ according to one or more embodiments is shown. Specifically, the value γ can be implicitly configured by associating it with the DCI code point of the SRS request field that triggers DCI. Figure 12 As shown, the DCI code point of the SRS request field can have binary values ​​"00", "01", "10", and "11", corresponding to γ1, γ2, and γ3 configured using RRC signaling, and (when the DCI code point of the SRS request field is "00", the SRS resource set is not selected). The associated RRC parameter used to configure γ remains as previously defined in PFSfreqDomainPosition. Additionally, this embodiment can be used to determine the frequency domain start position for both SRS hopping and non-hopping cases.

[0085] Figure 13 An example of configuring parameter γ according to one or more embodiments is shown. Specifically, as described above, each SRS resource set can be associated with a specific γ value. As a result, the NW can implicitly configure specific values ​​of the parameter by selecting an appropriate SRS resource set using DCI code points. Figure 13 As shown in the example, each SRS resource set in the table has a specific γ value (e.g., configured using RRC signaling). The NW can then implicitly configure the γ value by selecting a specific SRS resource set from the table. Optionally, if aperiodic SRS (A-SRS) triggering is performed using DCI without data / CSI scheduling, the unused fields in DCI format 0_1 / 0_2 can be reused to indicate the γ value. Additionally, this embodiment can be used to determine the frequency domain start position for both SRS hopping and non-hopping scenarios.

[0086] Figure 14 An example of configuring parameter γ according to one or more embodiments is shown. In this example, the value of parameter γ can be explicitly configured using code points of the new DCI field. For example, code points for the new DCI field can have binary values ​​“00”, “01”, “10”, and “11”, corresponding to γ1, γ2, γ3, and γ4. Furthermore, this embodiment can be used to determine the frequency domain start position for both SRS hopping and non-hopping cases.

[0087] Figure 15 An example of a frequency domain start position for partial frequency detection according to one or more embodiments is shown. Specifically, considering a bitmap using higher-layer signaling or DCI, the UE can be configured with a set of consecutive RBs for SRS transmission within a configured SRS bandwidth. Figure 15 As shown in the example, and P F=2. Then, using a bitmap, NW can select a contiguous set of RBs for SRS transmission. In this example, as shown in the SRS resource allocation, the set 000111111000 indicates 1 for SRS transmission of RBs.

[0088] Additionally, in this example, The equation can be used to determine the starting position in the frequency domain (as used for...) Figure 6 The equations are the same.

[0089] In the same example, which is configured with a set of consecutive RBs for SRS transmission, Figure 15 An example is shown where the starting RB index is 4. In this example, the starting RB index can be dynamically changed using DCI or higher-layer signaling such as MAC-CE, RRC, etc. Additionally, this embodiment can be used to determine the frequency domain start position for both SRS hopping and non-hopping scenarios.

[0090] The above embodiments regarding SRS partial frequency detection are applicable only when the corresponding UE capability has been reported and the corresponding higher-layer parameters have been configured. For example, as part of its capability report, the UE reports whether it can perform SRS partial frequency detection. As another example, as part of its capability report, the UE reports what P it can support when SRS partial frequency detection is configured. F Value. When the UE reports its capabilities, the NW can then configure SRS partial frequency detection. Those skilled in the art will understand that additional scenarios may be applicable when adding and / or configuring the corresponding higher-layer parameters.

[0091] Variant

[0092] The information, signals, and / or other elements described in this specification may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or photons, or any combination thereof, all of which may be referenced throughout the description contained herein.

[0093] Furthermore, information and signals can be output from higher layers to lower layers and / or from lower layers to higher layers. Information and signals can be input and / or output via multiple network nodes.

[0094] Input and / or output information, signals, etc., can be stored in a specific location (e.g., memory) or managed using a management table. Input and / or output information, signals, etc., can be overwritten, updated, or appended. Output information, signals, etc., can be deleted. Input information, signals, etc., can be sent to another device.

[0095] The reporting of information is by no means limited to the aspects / this embodiment described in this specification, and other methods may also be used. For example, information reporting may be achieved by using physical layer signaling (e.g., downlink control information (DCI), uplink control information (UCI), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB) etc.), MAC (Media Access Control) signaling, etc.) and other signals and / or combinations thereof).

[0096] Whether referred to as "software," "firmware," "middleware," "microcode," or "hardware description language," or by other terms, software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0097] Furthermore, software, commands, information, etc., can be sent and received via communication media. For example, when software is transmitted from a website, server, or other remote source using wired technologies (coaxial cable, fiber optic cable, twisted pair cable, digital subscriber line (DSL), etc.) and / or wireless technologies (infrared radiation, microwave, etc.), these wired and / or wireless technologies are also included in the definition of communication media.

[0098] The terms “system” and “network” used in this specification are used interchangeably.

[0099] In this specification, the terms "base station (BS)," "radio base station," "eNB," "gNB," "cell," "sector," "cell group," "carrier," and "component carrier" are used interchangeably. A base station may also be referred to as a "fixed station," "NodeB," "eNodeB (eNB)," "access point," "transmission point," "receiving point," "femtocell," "small cell," etc.

[0100] 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 divided into multiple smaller areas, and each smaller area can provide communication services through a base station subsystem (e.g., an indoor small cell (RRH (Remote Radio Header))). The terms "cell" or "sector" refer to part or all of the coverage area of ​​the base station and / or base station subsystem that provides communication services within that coverage area.

[0101] In this specification, the terms “mobile station (MS)”, “user terminal”, “user equipment (UE)” and “terminal” are used interchangeably.

[0102] In some cases, those skilled in the art may refer to a mobile station as a "user station," "mobile unit," "user unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile user station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "mobile phone," "user agent," "mobile client," "client," or some other appropriate term.

[0103] Furthermore, the radio base station mentioned in this specification can be interpreted as a user terminal. For example, each aspect / current embodiment of this disclosure can be applied to a configuration in which communication between the radio base station and the user terminal is replaced by communication between multiple user terminals (D2D (device-to-device)). In this case, user terminal 20 can have the functions of the radio base station 10 described above. Additionally, terms such as "uplink" and "downlink" can be interpreted as "side". For example, an uplink channel can be interpreted as a side channel.

[0104] Similarly, the user terminal in this specification can be interpreted as a radio base station. In this case, the radio base station can have the functions of the aforementioned user terminal.

[0105] Actions performed by a base station as described in this specification may, in some cases, be performed by upper-layer nodes. In a network comprising one or more network nodes having a base station, it is clear that various operations performed to communicate with a terminal may be performed by the base station, one or more network nodes other than the base station (e.g., MME (Mobility Management Entity), S-GW (Serving Gateway), etc., which are possible but not limiting), or a combination thereof.

[0106] One or more embodiments illustrated in this specification can be used alone or in combination, and can be switched according to the mode of implementation. The order of processes, sequences, flowcharts, etc., used to describe aspects / current embodiments herein may be rearranged as long as no inconsistency occurs. For example, although various methods have been shown in this specification with various components of steps in an exemplary order, the specific order shown herein is by no means limiting.

[0107] One or more embodiments illustrated in this disclosure can be applied to LTE (Long Term Evolution), LTE-A (Advanced LTE), LTE-B (Super LTE), SUPER 3G, Advanced IMT, 4G (Fourth Generation Mobile Communications System), 5G (Fifth Generation Mobile Communications 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), CDMA 2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra Broadband), Bluetooth (registered trademark), systems using other suitable radio communication methods, and / or next-generation systems based on these enhancements.

[0108] Unless otherwise stated, the phrase “based on” (or “based on…”) used in this specification does not mean “based on only” (or “based on only…”). In other words, the phrase “based on” means “based on only” and “based on at least” (“based on only” and “based on at least”).

[0109] References to elements with names such as "first," "second," etc., as used herein, generally do not restrict the number or order of these elements. These names may be used herein merely for convenience as a way to distinguish two or more elements. Therefore, references to the first element and the second element do not imply that only two elements may be used, or that the first element must somehow precede the second element.

[0110] As used herein, the term "judgment (determination)" can encompass a wide variety of actions. For example, "judgment (determination)" can be interpreted as making a judgment (determination) regarding calculation, operation, processing, derivation, investigation, search (e.g., search table, database, or some other data structure), ascertainment, etc. Furthermore, "judgment (determination)" can be interpreted as making a judgment (determination) regarding receiving (e.g., receiving information), sending (e.g., sending information), input, output, access (e.g., accessing data in memory), etc. Additionally, as used herein, "judgment (determination)" can be interpreted as meaning making a judgment (determination) regarding parsing, selection, picking, hypothesis, establishment, comparison, etc. In other words, "judgment (determination)" can be interpreted as meaning making a judgment (determination) regarding a certain action.

[0111] As used herein, the terms “connection” and “coupling”, or any variations thereof, mean any direct or indirect connection or coupling between two or more elements, and may include one or more intermediate elements between two elements that are “connected” or “coupled” to each other. The coupling or connection between elements can be physical, logical, or a combination thereof. For example, “connection” can be interpreted as “access”.

[0112] In this specification, when two components are connected, they may be considered “connected” or “coupled” to each other by using one or more wires, cables and / or printed electrical connections, and as some non-limiting and non-inclusive examples, by using electromagnetic energy with wavelengths in the radio frequency region, microwave region, (visible and invisible) optical region, etc.

[0113] In this specification, the phrase "A and B are different" can mean "A and B are different from each other." The terms "separation," "coupling," etc., can be interpreted similarly.

[0114] Furthermore, the term "or" used in this specification or claims is intended not to be an exclusive separation.

[0115] Now, although the invention has been described in detail above, it will be apparent to those skilled in the art that the invention is by no means limited to the embodiments described herein. The invention can be practiced through various corrections and modifications without departing from the spirit and scope of the invention as defined by the claims. Therefore, the description in this specification is for illustrative purposes only and should not in any way be construed as limiting the invention according to the present invention.

[0116] Alternative examples

[0117] The examples and embodiments described above can be combined with each other, and the various features of these examples can be combined with each other in various combinations. The invention is not limited to the specific combinations disclosed herein.

[0118] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of the invention. Therefore, the scope of the invention should be limited only by the appended claims.

Claims

1. A terminal, comprising: The receiving unit receives first setting information and second setting information. The first setting information sets a first parameter for determining the sequence length of the sounding reference signal (SRS), and the second setting information sets a second parameter for identifying the start position of the SRS in the frequency domain. The control unit, based on the first setting information and the second setting information, controls the partial frequency detection accompanying the transmission of the SRS. The second setting information is the RRC parameter, which can be set to any one of multiple integer values. The value of the second parameter is represented by a different number of bits based on the value of the first parameter.

2. The terminal as described in claim 1, wherein, If the second parameter is not set using the second setting information, the value of the second parameter becomes 0.

3. The terminal as described in claim 1, wherein, The second setting information is the RRC parameter associated with the resources of the SRS.

4. The terminal as described in claim 1, wherein, If the first parameter is not set using the first setting information, the value of the first parameter becomes 1.

5. A wireless communication method, comprising: The steps of receiving first setting information and second setting information, wherein the first setting information sets a first parameter for determining the sequence length of the sounding reference signal (SRS), and the second setting information sets a second parameter for identifying the start position of the SRS in the frequency domain; and The steps for controlling the partial frequency detection accompanying the SRS transmission based on the first setting information and the second setting information. The second setting information is the RRC parameter, which can be set to any one of multiple integer values. The value of the second parameter is represented by a different number of bits based on the value of the first parameter.

6. A base station, comprising: The transmitting unit transmits first setting information and second setting information. The first setting information sets a first parameter for determining the sequence length of the sounding reference signal (SRS); the second setting information sets a second parameter for identifying the start position of the SRS in the frequency domain; and The control unit instructs SRS transmission at a portion of the frequency based on the first setting information and the second setting information. The second setting information is the RRC parameter, which can be set to any one of multiple integer values. The value of the second parameter is represented by a different number of bits based on the value of the first parameter.

7. A system comprising a terminal and a base station, wherein, The terminal has: The receiving unit receives first setting information and second setting information. The first setting information sets a first parameter for determining the sequence length of the detection reference signal (SRS). The second setting information sets a second parameter for identifying the start position of the frequency domain of the SRS. as well as The control unit, based on the first setting information and the second setting information, controls the partial frequency detection accompanying the transmission of the SRS. The second setting information is the RRC parameter, which can be set to any one of multiple integer values. The base station has a unit for transmitting the first setting information and the second setting information. The value of the second parameter is represented by a different number of bits based on the value of the first parameter.

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