RU2762337C1 - Terminal, radio communication method, base station and system containing base station and terminal - Google Patents

Abstract

FIELD: mobile communications.

SUBSTANCE: invention relates to the field of mobile communications. The user terminal contains: a transmission section made with the possibility of transmitting an ascending control channel on a set of slots; and a control section made with the possibility, when changing the active part of the bandwidth (BWP) during the transmission of the ascending control channel, to control the transmission of the ascending control channel after changing the BWP.

EFFECT: preventing a decrease in the communication bandwidth, even when switching BWP.

5 cl, 35 dwg

Description

The technical field to which the invention relates

The present invention relates to a user terminal and a radio communication method for a next generation mobile communication system.

State of the art

In order to increase data transmission rates and reduce latency in the networks of the Universal Mobile Telecommunications System (UMTS), a Long Term Evolution (LTE) scheme has been defined (see Non-Patent Document 1). In addition, an advanced LTE scheme (LTE-A, from the English LTE-Advanced, or LTE versions 10, 11, 12 and 13) was defined to provide higher bandwidth and further enhancements compared to the LTE scheme (LTE versions 8 and 9 ).

Further LTE systems are also being studied (also called, for example, future radio access system (FRA), 5th generation mobile communication system (5G), 5G + (plus), new radio (NR, from English New Radio), new radio access (NX), future generation radio access (FX) or LTE versions 13, 14, 15 or later).

In accordance with existing LTE systems (for example, LTE versions 8-13), a user terminal (user equipment, UE, from English.User Equipment) transmits uplink control information (UCI, from English.Uplink Control Information) using, for example, upstream a control channel (for example, a physical uplink control channel (PUCCH, from the English Physical Uplink Control Channel)).

The UCI may include, for example, retransmission control information (also called HARQ-ACK, ACK / NACK, and A / N) for downlink data, a scheduling request (SR), and CSI (eg, periodic CSI ( P-CSI) or aperiodic CSI (A-CSI)).

List of cited literature

Non-patent documents

Non-Patent Document 1: 3GPP TS 36.300 V8.12.0 “Enhanced Universal Terrestrial Radio Access (E-UTRA) and Enhanced Universal Terrestrial Radio Access Network (E-UTRAN); General description; Stage 2 (issue 8) ", April 2010

Disclosure of the essence of the invention

Technical problem

For the NR, the configuration of one or multiple portions of the bandwidth (BWP, from the English BandWidth Part) was investigated in relation to the UE for each component carrier (CC, from the English Component Carrier). BWP can be referred to as sub-band or sub-band.

Multiple BWPs can be configured for the UE, or the UE can switch between BWPs and perform transmit / receive processing. Bandwidth handover (BWP) may be referred to as BWP handover, BWP change, or BWP adaptation.

In addition, for NR, the use of PUCCH on multiple slots was investigated. A PUCCH on multiple slots may be referred to as a multi-slot PUCCH.

It is intended to apply BWP adaptation during multi-slot PUCCH transmission. However, a study on multi-slot PUCCH resources in the case where BWP adaptation is applied is not developed. Therefore, if control is not performed to use proper PUCCH resources in case of active BWP handoff, there is a risk of degrading the communication channel capacity and frequency efficiency.

Therefore, one of the objects of the present invention is to provide a user terminal and a radio communication method that can prevent the capacity of a communication channel from decreasing even when a BWP is switched.

Solution

A user terminal according to one aspect of the present invention comprises: a transmission section configured to transmit an uplink control channel on a plurality of slots; and a control section configured, upon changing the active bandwidth portion (BWP) during transmission of the uplink control channel, controlling the transmission of the uplink control channel after the change in BWP.

Advantageous effects of the invention

According to one aspect of the present invention, it is possible to prevent the capacity of the communication channel from decreasing even when the BWP is switched.

Brief Description of Drawings

FIG. 1A-1C are diagrams illustrating one example of a multi-slot PUCCH frequency hopping.

FIG. 2A-2C are diagrams illustrating one example of a frequency offset applied to a multi-slot PUCCH.

FIG. 3 is a diagram illustrating one example of a problem encountered in a multi-slot PUCCH during BWP adaptation.

FIG. 4 is a diagram illustrating another example of a problem encountered in a multi-slot PUCCH during BWP adaptation.

FIG. 5A and 5B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 1.1.

FIG. 6A and 6B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 1.2.

FIG. 7A and 7B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 1.3.

FIG. 8 is a diagram illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 1.4.

FIG. 9 is a diagram illustrating one example of the relationship between M and the BWP bandwidth.

FIG. 10A and 10B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to the second embodiment.

FIG. 11A and 11B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 3.1.

FIG. 12A and 12B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 3.2.

FIG. 13A and 13B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to the fourth embodiment.

FIG. 14A and 14B are diagrams illustrating one example of PUCCH resource sets according to the fifth embodiment.

FIG. 15A to 15C are diagrams illustrating one example of a frequency offset according to the fifth embodiment.

FIG. 16 is a diagram illustrating one example of a schematic diagram of a radio communication system according to one embodiment.

FIG. 17 is a diagram illustrating one example of a general configuration of a radio base station according to one embodiment.

FIG. 18 is a diagram illustrating one example of a functional configuration of a radio base station according to one embodiment.

FIG. 19 is a diagram illustrating one example of a general configuration of a user terminal according to one embodiment.

FIG. 20 is a diagram illustrating one example of a functional configuration of a user terminal according to one embodiment.

FIG. 21 is a diagram illustrating one example of a hardware configuration of a radio base station and a user terminal according to one embodiment.

Implementation of the invention

For the NR, configuring one or multiple portions of bandwidth (BWP) for the UE for each component carrier (CC) was investigated. BWP can be referred to as sub-band or sub-band.

The BWP used for the downlink may be called the downlink BWP, and the BWP used for the uplink may be called the uplink BWP. The UE may assume that one BWP (one downstream BWP and one upstream BWP) among the configured BWPs is active (available) at a given time. In addition, the downlink BWP and uplink BWP frequency bands may overlap each other.

The BWP is assumed to be associated with a particular numerology (eg, subcarrier spacing or cyclic prefix length). The UE performs reception in the active downstream BWP by using the numerology associated with the downstream BWP and transmits in the active upstream BWP using the numerology associated with the upstream BWP.

A BWP configuration can include information such as numerology, frequency position (e.g. center frequency), bandwidth (e.g. number of resource blocks (also called RBs) or physical RBs (PRBs). RB)), as well as the index or frequency of temporary resources (for example, slot (mini-slot)).

The BWP configuration can be signaled using, for example, higher layer signaling. In this regard, the higher layer signaling may be, for example, one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, and broadcast information, or their combinations.

The MAC signaling can use, for example, a MAC Control Element (MAC Control Element) or a MAC Protocol Data Unit (MAC PDU). The broadcast information can be, for example, a Master Information Block (MIB), a System Information Block (SIB), or Remaining Minimum System Information (RMSI). ).

The UE may track a search space (possible downlink control channel) or downlink control channel (e.g., PDCCH) associated with a COntrol REsource SET (CORESET) in at least one of the configured downlink BWPs (e.g., downlink BWP included in the main SS).

CORESET is a possible area for placing a control channel (for example, a physical downlink control channel (PDCCH), and can be called a control sub-band, a search space set, a search space resource set, a control area, a control sub-band. and NR-PDCCH region).

Multiple BWPs can be configured for the UE, and the UE can switch between BWPs and perform transmit / receive processing. As a switching method, a method for indicating a BWP made active (activated) by MAC and / or DCI signaling, as well as a default switching method to a BWP when a predetermined time elapses, has been studied. BWP switchover may be referred to as BWP switchover, BWP switchover, and BWP adaptation.

For example, by encouraging the UE to use a wide bandwidth BWP when data is present, and to use a narrow bandwidth BWP to track CORESET when there is no data, it is possible to reduce the UE's power consumption.

In addition, the default BWP may be configured for the UE, for example, with higher layer signaling, or may be assumed to be the same as the active BWP that is used first (the initial active BWP).

In addition, support for an uplink control channel (hereinafter also referred to as short PUCCH or shorter PUCCH) with a shorter duration than the physical uplink control channel (PUCCH) formats of existing LTE systems (e.g. LTE versions 8-13), and / or an uplink control channel (hereinafter also called a long PUCCH) with a longer duration than a short duration.

As, for example, the PUCCH short format, the O PUCCH format, in which the number of UCI bits for transmission is 2 or less, and the number of OFDM symbols is 1, 2, or 3 bits, and the PUCCH format 2, in which the number of UCI bits for transmission is is greater than 2 and the number of OFDM symbols is 1, 2, or 3 bits.

In addition, as the long PUCCH format, PUCCH format 1 in which the number of UCI bits for transmission is 2 or less and the number of OFDM symbols is 4-14 bits, and PUCCH format 3 in which the number of UCI bits for transmission is more than 2 have been investigated. and the number of OFDM symbols is 4-14 bits.

In addition, "PUCCH" briefly disclosed herein may be called "long PUCCH and / or short PUCCH".

For NR, the use of PUCCH on multiple slots was investigated. A PUCCH on multiple slots may be referred to as a multi-slot PUCCH.

Each slot may carry the same data (UCI) or different data using the multi-slot PUCCH. When transmitting the same data, you can expect a reduction in the UCI error rate. Better bandwidth can be expected when transferring various data.

The multi-slot PUCCH can support intra-slot hopping and / or inter-slot hopping. In addition, it can be assumed that both of these intra-slot and inter-slot hops cannot be simultaneously available to the same UE, or it can be assumed that these intra-slot and inter-slot hops can be simultaneously available.

FIG. 1A-1C are diagrams illustrating one example of a multi-slot PUCCH frequency hopping. Each of FIGS. 1A-1C illustrate an example of an 8-slot multi-slot PUCCH. Each of FIGS. 1A-1C illustrate a frequency hopping (FH) boundary.

FIG. 1A, an example is illustrated in which the first hop contains 4 slots (slot indices = 1-4) and the second hop contains 4 slots (slot indices = 5-8).

FIG. 1B, an example is illustrated in which each hop contains 1 slot. FIG. 1C illustrates an example in which each hop contains 2 slots. The number of slots M (M = 2 in the case of FIG. 1C) per hop illustrated in FIG. 1C can be configured with higher level signaling, for example.

In this regard, in the figures relating to PUCCH resources in the present description, it is assumed that one square represents 1 PRB resource and 1 slot. However, the present invention is not limited to this. For example, a frequency resource associated with one square region may be one or multiple sub-carriers, sub-bands, resource elements (REs), PR Bs, or RB groups. In addition, the time resource associated with one square area may be one or multiple symbols, mini-slots, or subframes.

In addition, in the present specification, terms related to frequency resources such as subcarriers, subbands, REs, PRBs, and RB groups may be referred to interchangeably. As used herein, terms relating to symbols, mini-slots, slots, and subframes may be referred to interchangeably.

Information related to the frequency resource with a particular hop can be reported to the UE using higher layer signaling. Information related to a frequency resource with a particular hop may include, for example, at least one of the following: information of a predetermined reference frequency resource (for example, a frequency resource with a first hop), and frequency offset information (also referred to below simply as a "frequency hop" ) from the reference frequency resource to the frequency resource with a specific hop.

The frequency offset information can be indicated by a PRB index, for example. FIG. 2A-2C are diagrams illustrating one example of frequency offsets applied to multi-slot PUCCHs. FIG. 2A-2C illustrate the same examples as in FIGS. 1A-1C, and illustrates PRB index shifts as inter-hop frequency shifts.

Meanwhile, it is assumed that BWP adaptation is applied at the time of multi-slot PUCCH transmission. However, in the case where the UE tries to transmit the PUCCH using the same frequency resource before or after changing the BWP, situations occur where some PUCCHs cannot be transmitted, or the PUCCH resources share the bandwidth in the BWP.

FIG. 3 is a diagram illustrating one example of a problem encountered in a multi-slot PUCCH during BWP adaptation. In this example, the UE switches the active BWP from BWP # 1 to BWP # 2 with a comparatively narrower bandwidth. On the other hand, the PUCCH resources are determined based on the BWP # 1 configuration. In this case, the sixth PUCCH resource is allocated outside the BWP # 2 range, and therefore, the UE cannot transmit the sixth PUCCH resource (information to be transmitted using the sixth PUCCH resource).

FIG. 4 is a diagram illustrating another example of a problem encountered in a multi-slot PUCCH during BWP adaptation. In this example, the UE switches the active BWP from BWP # 2 to BWP # 1 with a relatively wider bandwidth. On the other hand, the PUCCH resources are determined based on the BWP # 2 configuration. In this case, the sixth resource PUCCH is located near the center of BWP # 1. Therefore, the sixth PUCCH resource shares BWP # 1, and it is impossible to transmit another signal (eg, PUSCH) using a wide contiguous band.

When switching the active BWP, as illustrated in FIG. 3 and 4, if control is not performed to use the proper PUCCH resources, there is a risk of degradation of the communication channel capacity and frequency efficiency.

Therefore, the inventors of the present invention have developed a method to properly control the transmission of a multi-slot PUCCH even in the case of applying BWP adaptation.

Embodiments according to the present invention will be described in detail below with reference to the drawings. The radio communication method according to each embodiment may be applied by itself or may be used in combination.

In addition, this description mainly discloses examples in which, as illustrated in FIG. Slots 3 and 4, 4 (slots one to four) of the multi-slot PUCCH are transmitted prior to BWP adaptation, and the remaining three slots (slots five to seventh) are transmitted after BWP adaptation. However, these slot numbers can be optional slot numbers. In addition, the multi-slot PUCCH according to each embodiment assumes a multi-slot PUCCH whose transmission starts before the BWP adaptation, as well as whose transmission is scheduled after the BWP adaptation. However, the present invention is not limited to this.

In the description of the following embodiments, “PUCCH” may mean multi-slot PUCCH.

In addition, the following embodiments will be disclosed considering that BWP # 1 is a relatively wide bandwidth BWP and BWP # 2 is a relatively narrow bandwidth BWP. As examples of BWP adaptation, in each embodiment, a case will be disclosed in which the BWP adaptation narrows the BWP bandwidth (BWP # 1 -> BWP # 2), and the case in which the BWP adaptation expands the BWP bandwidth (BWP # 2 -> BWP # 1). Hereinafter, the above will also be referred to as "case 1", and the following will also be referred to as "case 2".

(Radio communication method)

<First embodiment>

According to the first embodiment, the UE assumes that the frequency resource for the second and subsequent slot of the multi-slot PUCCH is not obtained from the BWP. In other words, the frequency resource for the second and subsequent multi-slot PUCCH slot is not affected by the BWP adaptation, but is determined based on the BWP in which the first slot was transmitted.

According to the first embodiment, even when the BWP adaptation is applied, the UE continues to use the values used as the frequency reference resource and the frequency offset in the first BWP. Some of the options for implementation will be disclosed below.

[Embodiment 1.1]

According to Embodiment 1.1, the UE stops transmitting the PUCCH in the slot after BWP adaptation. FIG. 5A and 5B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 1.1. FIG. 5A illustrates case 1 and FIG. 5B illustrates case 2.

In the case of Embodiment 1.1, in both cases 1 and 2, all multi-slot PUCCH transmission in slots after BWP adaptation is stopped.

According to the configuration of Embodiment 1.1, the UE only needs to perform control to stop the multi-slot PUCCH transmission when the BWP adaptation is applied, so that it is possible to suppress the increase in the UE load associated with the multi-slot PUCCH.

In addition, as used herein, “stop” may be understood interchangeably as “do not transmit,” “stop transmitting,” or “interrupt transmission.” In addition, “stop transmitting PUCCH” can be understood interchangeably as “flush PUCCH” or “flush PUCCH resources”.

[Embodiment 1.2]

According to Embodiment 1.2, when the BWP adaptation narrows the bandwidth of the active BWP, the UE stops transmitting the PUCCH in the slot after the BWP adaptation. FIG. 6A and 6B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 1.2. FIG. 6A illustrates case 1 and FIG. 6B illustrates case 2.

In the case of Embodiment 1.2, the transmission of the multi-slot PUCCH in the slot after BWP adaptation is interrupted in case 1. On the other hand, the transmission of the multi-slot PUCCH in the slot after the BWP adaptation is not interrupted, and the multi-slot PUCCH is transmitted in case 2.

According to the configuration of Embodiment 1.2, it is possible to suppress the increase in the UE load in case 1. It is possible to properly continue the PUCCH transmission in case 2, so that it is possible to reserve the PUCCH coverage.

[Embodiment 1.3]

According to Embodiment 1.3, the UE stops transmitting the PUCCH corresponding to frequency resources out of the BWP range in the slot after BWP adaptation. FIG. 7A and 7B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 1.3. FIG. 7A illustrates case 1 and FIG. 7B illustrates case 2.

In the example of FIG. 7A, the sixth PUCCH resource is located outside the BWP # 2 range, and therefore, the UE discards the sixth PUCCH resource. On the other hand, the fifth and seventh PUCCH resources are allocated in the BWP # 2 range, and therefore the UE transmits these PUCCH resources.

In the example of FIG. 7B, the fifth to seventh slots are all located in the BWP # 2 range, and therefore the UE transmits the fifth to seventh PUCCH resources.

According to the configuration of Embodiment 1.3, it is possible to transmit the PUCCH by using resources in the BWP band, while appropriately terminating the PUCCH transmission on resources that are outside the BWP band and cannot be used for transmission.

[Embodiment 1.4]

In Embodiment 1.4, the UE stops transmitting the PUCCH corresponding to the frequency resources of a specific band in the BWP in the slot after BWP adaptation. For example, a particular range may be near the center of the BWP, may be defined, for example, as a range equal to or greater than the first threshold and less than a second threshold, or may be defined as a range within a third threshold from the center frequency of the BWP.

At least one of these thresholds may be specified by a specification, or may be signaled by higher layer signaling, physical layer signaling (eg, Downlink Control Information (DCI)), or a combination of these signaling. In addition, the threshold value can be expressed, for example, in absolute values or in relative values of the PRB index.

FIG. 8 is a diagram illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 1.4. FIG. 8 illustrates case 2. In this example, it is assumed that a particular range is near the center of the BWP.

In the example of FIG. 8, the sixth PUCCH resource is located near the center of BWP # 2, and therefore the UE discards the sixth PUCCH resource. On the other hand, the fifth and seventh PUCCH resources are located at the edge of the BWP # 2 band, and therefore the UE transmits these PUCCH resources.

According to the configuration of Embodiment 1.4, it is possible to interrupt the PUCCH transmission that separates the BWP and transmit another signal (eg, PUSCH) by using a wide and contiguous band.

In addition, according to the first embodiment, the UE can use the PUCCH resources to discard as resources for transmitting another signal (eg, PUSCH).

According to the above-disclosed first embodiment, even when BWP adaptation is applied during the multi-slot PUCCH transmission, it is possible to appropriately control (stop or not) the PUCCH transmission using PUCCH resources based on the first BWP.

<Second embodiment>

According to the second embodiment, the UE assumes that the frequency resource for the second and subsequent slot of the multi-slot PUCCH is obtained from the BWP. In other words, the frequency resource for the second or subsequent slot of the multi-slot PUCCH is affected by the BWP adaptation, and is determined based on the RTD for the actual PUCCH transmission.

The UE determines the amount of frequency offset to from the reference frequency resource to the frequency resource with a specific hop based on the BWP. For example, the UE may determine the amount of frequency offset k according to the equation k = M * m. In addition, when no BWP adaptation is applied, the frequency offset can be determined based on the BWP.

In this regard, M may be a value determined based on a parameter associated with the BWP. For example, M may be a value based on the bandwidth associated with the BWP, or it may be a value based on numerology (eg, Sub-Carrier Spacing (SCS)) used for the BWP. In addition, the bandwidth associated with the BWP may be at least one of a cell's bandwidth (BW (from the English bandwidth) of a cell), a system bandwidth (system BW), a BWP bandwidth configured for a UE (UE BWP ), BWP upstream bandwidth, and BWP downstream bandwidth.

The value of M may be indicated by higher layer signaling and / or physical layer signaling, or may be predetermined for each BWP. FIG. 9 is a diagram illustrating one example of the relationship between M and the BWP bandwidth. The value of M can be associated with M = 1 when the BWP bandwidth is less than 10 MHz, M = 2 when the BWP bandwidth is equal to or greater than 10 MHz and less than 20 MHz, M = 4 when the BWP bandwidth is equal to or greater than 20 MHz and less than 40 MHz, and M = 8 when the BWP bandwidth is equal to or greater than 40 MHz and less than 80 MHz.

The value m may be called, for example, a shift factor, may be indicated by higher layer signaling and / or physical layer signaling (eg, DCI), or may be deduced by the UE according to a predetermined rule. For example, the value of m can be determined based on the UE group, UE category, or type of service (for example, enhanced mobile broadband (eMBB), enhanced machine-type communications (eMTC). Communication) or ultra-reliable communication with low latency (URLLC, from the English.Ultra Reliable and Low Latency Communications)).

FIG. 10A and 10B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to the second embodiment. FIG. 10A illustrates case 1 and FIG. 10B illustrates case 2.

In this case, the frequency shift is assumed to be k = M * m, and m is assumed to be a fixed value. As M in the equation, the UE uses, for BWP # 1, the M1 value determined based on BWP # 1, and uses for BWP # 2, the M2 value determined based on BWP # 2. BWP # 1 and # 2 have different bandwidths, and M1 and M2 take on different values.

In the case of the second embodiment, even in both cases 1 and 2, the multi-slot PUCCH resources in the slot after BWP adaptation are obtained so that they are allocated within the BWP range so that it is possible to properly continue the PUCCH transmission without causing a flush (interrupt).

According to the above-disclosed second embodiment, even when the BWP adaptation is applied during the multi-slot PUCCH transmission, it is possible to appropriately adjust the PUCCH resources for each BWP.

<Third embodiment>

According to the third embodiment, the UE assumes that a method (which may be called a PUCCH resource assignment rule or indexing) for providing indices related to frequency resources of a multi-slot PUCCH is associated with a given bandwidth. Examples of a provisioning method where the provisioning method is related to the BWP bandwidth (Embodiment 3.1) and is related to the system bandwidth (Embodiment 3.2) will be disclosed below.

[Embodiment 3.1]

According to Embodiment 3.1, the UE assumes that indices related to the frequency resources of the multi-slot PUCCH are provided for each BWP (start index is defined). In other words, the frequency resources (indices) of the multi-slot PUCCH are affected by the BWP adaptation, and are determined based on the BWP for the actual PUCCH transmission.

For example, the UE may assume that the PUCCH resource indices are provided from one end of the configured (and / or active) BWP bandwidth.

FIG. 11A and 11B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 3.1. FIG. 11A illustrates case 1, and FIG. 11B illustrates case 2.

In addition, this example assumes a frequency offset of k = M * m as disclosed in the second embodiment. However, the application of Embodiment 3.1 is not limited to this.

In this example, adjacent numbers are assigned to PUCCH resource indices of a portion of the BWP # 1 bandwidth, such that the PRB at one end of the BWP # 1 bandwidth is 0 and the PRB at the other end is B ₁ -1. Adjacent numbers are assigned to PUCCH resource indices of a portion of the BWP # 2 so that the PRB at one end of the BWP # 2 is 0 and the PRB at the other end is B ₂ -1.

As illustrated in FIG. 11A and 11B, as the center frequency of the BWP changes, the starting position of the PUCCH resource indices changes. Therefore, the reference frequency resource also fluctuates for different BWPs. Therefore, according to Embodiment 3.1, even when there is a significant change in the BWP center frequency before or after BWP adaptation, the UE can determine the PUCCH resources to be located within the BWP range.

[Embodiment 3.2]

In Embodiment 3.2, the UE assumes that the indices related to the frequency resources of the multi-slot PUCCH are provided independently of the BWP. In other words, the position of the reference frequency resource from the frequency resources of the multi-slot PUCCH is not affected by the BWP adaptation. For example, it can be assumed that the indices related to the frequency resources of the multi-slot PUCCH are provided depending on the BW of the cell or the system BW.

FIG. 12A and 12B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to Embodiment 3.2. FIG. 12A illustrates case 1 and FIG. 12B illustrates case 2.

In addition, this example assumes a frequency offset of k = M * m as disclosed in the second embodiment. However, the application of Embodiment 3.2 is not limited to this.

In this example, adjacent numbers are assigned to PUCCH resource indices such that the PRB at one edge of the BW of the cell is 0 and the PRB at the other edge is B _Cell -1.

As illustrated in FIG. 12A and 12B, even when the center frequency of the BWP changes, the starting position of the PUCCH resource indices remains the same. Therefore, the reference frequency resource is also the same. Therefore, it is assumed that if there is a significant change in the BWP center frequency before or after BWP adaptation, the PUCCH resources are allocated outside the BWP range.

In the examples in FIG. 12A and 12B, the sixth PUCCH resource is located outside the active BWP range (BWP # 2 or # 1). The UE may discard the sixth out-of-band PUCCH resource as disclosed in Embodiment 1.3. According to Embodiment 3.2, the UE can acquire PUCCH resource indices that are shared between portions of the bandwidth, so that it is possible to suppress an increase in the load associated with recognizing the PUCCH resource indices.

According to the above-disclosed third embodiment, even when the BWP adaptation is applied during the multi-slot PUCCH transmission, it is possible to appropriately adjust the PUCCH resources for each BWP.

<Fourth embodiment>

According to the fourth embodiment, the UE may assume that the frequency resources of the multi-slot PUCCH correspond to the resources configured in connection with the active BWP.

In this regard, resources configured in connection with the BWP can be resources such as CSI (e.g., CQI), reporting resources, or Semi-Persistent Scheduling (SPS) resources that are semi-statically configured using signaling more high level.

When BWP adaptation is applied (upon BWP change), the UE can recognize that the PUCCH resources in the slot after BWP adaptation are resources to be configured for the BWP after adaptation. In this case, the UE may stop transmitting the PUCCH that uses the PUCCH resources in the slot after BWP adaptation, or may perform the PUCCH transmission.

FIG. 13A and 13B are diagrams illustrating one example of multi-slot PUCCH control during BWP adaptation according to the fourth aspect. FIG. 13A and 13B illustrate case 1.

In addition, the present description mainly discloses a case where inter-slot / intra-slot hopping is available. However, embodiments of the present invention can be used even in a case where frequency hopping is not available (eg, FIGS. 13A and 13B correspond to a case where frequency hopping is not available).

In this example, PUCCH resources for BWP # 1 and PUCCH resources for BWP # 2 are configured accordingly. A plurality of PUCCH resources can be configured and one of the PUCCH resources can be selected by DCI.

In the example of FIG. 13A, after BWP adaptation, the UE stops transmitting PUCCH on PUCCH resources after adaptation. In the example of FIG. 13B, after BWP adaptation, the UE performs PUCCH transmission on the PUCCH resources after adaptation.

According to the above-disclosed fourth embodiment, even when BWP adaptation is applied during the multi-slot PUCCH transmission, it is possible to appropriately select the PUCCH resources for each BWP.

<Fifth embodiment>

In the fifth embodiment, signaling in the case where frequency hopping is available for the PUCCH will be disclosed in detail.

A plurality of sets (PUCCH resource sets or parameter sets), each of which contains 1 or more parameters related to PUCCH resources (PUCCH resources), may be pre-configured (or reported from the radio base station) at the UE.

One of these plurality of these PUCCH resource sets is indicated by using a predetermined field in the Downlink Control Information (DCI). The UE controls the PUCCH transmission based on the PUCCH resource set indicated by the specified first value in the DCI.

When inter-slot hopping is available for the PUCCH, each PUCCH resource set configured with higher layer signaling may include frequency resource information disclosed in the first embodiment, for example.

FIG. 14A and 14B are diagrams illustrating one example of PUCCH resource sets according to the fifth embodiment. As illustrated in FIG. 14A, each value of the predetermined DCI field indicates a PUCCH resource set. For example, in FIG. 14A, field set values "00", "01", "10", and "11" may indicate PUCCH resource sets # 0, # 1, # 2, and # 3, respectively.

As illustrated in FIG. 14B, each PUCCH resource set may indicate at least one of the following parameters.

- Information indicating the start PUCCH symbol

- Information indicating the number of PUCCH symbols in a slot

- Information (e.g. start PRB index) to identify the frequency resource (e.g. start PRB) of the first PUCCH hop

- Information indicating the number of resource units (e.g., the number of PRBs) that make up the PUCCH frequency resources

- Information indicating whether frequency hopping is available or not (enabled or disabled)

- Information related to the frequency resources of the second and subsequent hops in the case where a frequency hopping is available (for example, information indicating at least one of the above disclosed k, M and m, and information indicating the indices of the corresponding frequency resources of the second and subsequent hops )

- Information (hopping mode) indicating the type of hopping (intra-slot and / or inter-slot) to be resolved.

In this regard, at least one parameter illustrated in FIG. 14B may not be specified dynamically as the PUCCH resource set, and may be configured semi-statically with higher layer signaling.

The PUCCH resource set can be configured differently for each UCI type (HARQ-ACK, CSI, or SR). For example, the CSI PUCCH resource set (CQI) may be assumed as a PUCCH resource set for which at least one parameter among the HARQ-ACK PUCCH resource sets is separately configured.

FIG. 15A to 15C are diagrams illustrating one example of a frequency offset according to the fifth embodiment. In this example, the index # n (eg, minimum index) of a given resource unit (eg, PRB / RE) of the first hop frequency resource is reported to the UE.

When hopping the frequency resource PUCCH for each slot, as illustrated in FIG. 15A, frequency offset information indicating the frequency offset to from the frequency resource of the previous hop (previous slot) may be reported as information relating to the frequency resources of the second and subsequent hops to the UE.

FIG. 15A, based on the addition (or subtraction) of the frequency resource index #n of the previous hop (e.g., the frequency resource of the first slot (slot # 0)) and the frequency offset k, the UE may determine the frequency resource index # n + k (or #nk) the next slot (for example, the frequency resource of the second hop (slot #l)).

FIG. 15B, frequency offset information indicating the frequency offset k _{i of the} i-th (i is 2 to 4) hop from the reference frequency resource index #m is reported to the UE. Information indicating the index #m can be signaled (configured) with higher layer signaling.

FIG. 15B, the UE may determine the _{frequency resource index # m + k i of the} i-th hop based on #m and k _i .

FIG. 15C, frequency offset information indicating the frequency offset k _{i of the} i-th (i is 2 to 4) from the BWP edge index #l is reported to the UE. Index #l may be an index (eg, PRB index or RE index) of the BWP edge on the side opposite to the side to which the frequency resource of the first hop belongs.

FIG. 15C, the UE may determine the frequency resource index # l + k of the ith hop based on #l and k _i .

The bandwidth in the case where hopping is allowed will be disclosed below. In addition, “total bandwidth” and / or “bandwidth” in the following description can be understood as “frequency offset” disclosed above.

When inter-slot hopping is enabled for multi-slot PUCCH, the total bandwidth of all hops and / or bandwidth 1 of the hop may be reported to the UE as the inter-slot hopping bandwidth using higher signaling.

When inter-slot hopping is enabled for multi-slot PUCCH, the UE may deduce the inter-slot hopping bandwidth from the intra-slot hopping bandwidth. For example, the inter-slot hop bandwidth = M * the intra-slot hop bandwidth, or the intra-slot hop bandwidth = M * m * the intra-slot hop bandwidth. (M and m are the same as disclosed in the second embodiment). In addition, it can be assumed that M = 1.

The intra-slot hopping bandwidth may be calculated based on at least one of the bandwidths related to the BWP disclosed in the second embodiment, or may be reported using higher layer signaling, physical layer signaling, or a combination of these signalings.

The hopping subband may be tuned with higher layer signaling, or may be an integer multiple of the RBG associated with the BWP of the UE or the BW of the cell. Even when an intra-slot hop is configured to be enabled, the number of valid characters in 1 slot is less than X (eg, X = 7 or X = 4), an intra-slot hop may be interpreted as disabled (or may be ignored).

(Radio communication system)

Below will be disclosed a configuration of a radio communication system in accordance with one embodiment of the present invention. The radio communication system uses one or a combination of radio communication methods according to each of the above embodiments of the present invention to communicate.

FIG. 16 is a diagram illustrating one example of a schematic diagram of a radio communication system according to one embodiment. The radio communication system 1 may employ carrier aggregation (CA) and / or double connection (DC), which aggregate a plurality of base frequency blocks (component carriers), 1 unit of which is the bandwidth (eg, 20 MHz) of the LTE system.

In this regard, the radio communication system 1 may refer to a long-term evolution (LTE) scheme, an advanced LTE scheme (LTE-A, from LTE-Advanced), super-LTE (LTE-B, from LTE-Beyond), SUPER 3G, Advanced IMT, 4th Generation (4G) Mobile, 5G (5G) Mobile, New Radio (NR), Future Radio Access (FRA) ), a new radio access technology (New-RAT, from the English. New Radio Access Technology), or a system that implements these technologies.

The radio communication system 1 contains a radio base station 11, which forms a macro cell C1 with a relatively wide coverage area, base radio stations 12 (12a - 12c), which are located in the macro cell C1 and form small cells C2, narrower than the macro cell C1. In addition, the user terminal 20 is located in the macro cell C1 and each small cell C2. The location and numbers of respective cells and user terminals 20 are not limited to the aspects illustrated in FIG. sixteen.

The user terminal 20 can connect to both the radio base station 11 and the radio base stations 12. It is assumed that the user terminal 20 simultaneously uses the macro cell C1 and small cells C2 using a CA or DC. In addition, the user terminal 20 can apply the CA or DC by using multiple cells (CC).

The user terminal 20 and the radio base station 11 can communicate by using a carrier (also called a legacy carrier) of a narrow bandwidth over a relatively small frequency range (eg, 2 GHz). On the other hand, the user terminal 20 and each radio base station 12 may use a wide bandwidth carrier over a relatively large frequency range (e.g., 3.5 GHz or 5 GHz), or may use the same carrier that is used between the user terminal 20 and the radio base station. 11. In this regard, the configuration of the frequency band used by each radio base station is not limited to this.

In addition, the user terminal 20 can communicate using time division duplex (TDD) and / or frequency division duplex (FDD) in each cell. In addition, a single numerology may be applied in each cell (carrier), or many different numerologies may be applied.

Numerology may be a communication parameter to be applied to transmit and / or receive a specific signal and / or channel, and may indicate, for example, at least one of subcarrier spacing, bandwidth, symbol length, cyclic prefix length, subframe length, length The TTI, the number of symbols per TTI, the radio frame configuration, the specific filtering processing performed by the transceiver in the frequency domain, and the specific windowing processing performed by the transceiver in the time domain. For example, in the case where the sub-carrier spacings of the constituent OFDM symbols are different, and / or in the case where the numbers of OFDM symbols are different on a certain physical channel, it can be understood that the numerologies are different.

The radio base station 11 and each radio base station 12 (or two radio base stations 12) can be connected using a wired connection (for example, fiber optic compatible with the Common Public Radio Interface (CPRI) or X2 interface) or using radio connections.

The radio base station 11 and each radio base station 12 are connected to a higher-level station apparatus 30 and are connected to the core network 40 through the higher-level station apparatus 30. In this regard, the higher-level station apparatus 30 includes, for example, an access gateway apparatus, a radio access network controller (RNC) and a mobility management entity (MME), but not limited to them. In addition, each radio base station 12 can be connected to a higher-level station apparatus 30 via the radio base station 11.

In this regard, the radio base station 11 is a radio base station that has a relatively wide coverage area and may be called a macro base station, aggregate node, eNodeB (eNB), or a transmit / receive point. In addition, each radio base station 12 is a radio base station that has a local coverage area and can be called a small base station, a micro base station, a pico base station, a femto base station, a home eNodeB (HeNB), a remote radio unit (RRH , from the English Remote Radio Head) or a transmission / reception point. Radio base stations 11 and 12 will hereinafter be referred to generally as radio base station 10, unless distinction is made between them.

Each user terminal 20 is a terminal that supports various communication schemes such as LTE and LTE-A, and may include not only a mobile communication terminal (mobile station) but also a fixed communication terminal (fixed station).

As radio access schemes, the radio communication system 1 adopts Orthogonal Frequency-Division Multiple Access (OFDMA) for the downlink and Frequency Division Multiple Access with a single carrier (SC-FDMA, from the English Single Carrier Frequency Division Multiple Access) and / or OFDMA for uplink.

OFDMA is a multi-carrier transmission scheme that partitions a frequency band into multiple narrow frequency bands (sub-carriers) and maps data on each sub-carrier for communication. SC-FDMA is a single carrier transmission scheme that divides the system bandwidth into bands containing one or more contiguous resource blocks for each terminal and encourages multiple terminals to use corresponding different bands to reduce mutual interference between terminals. In this regard, the uplink and downlink radio access schemes are not limited to a combination of these schemes, and other radio access schemes may be used.

As the downlinks, the radio system 1 uses a downlink shared channel (PDSCH: Physical Downlink Shared Channel) shared by each user terminal 20, a broadcast channel (RVSN: Physical Broadcast Channel)) and the downlink L1 / L2 control channel. User data, higher-level control information, and system information blocks (SIBs) are transmitted over the PDSCH. In addition, blocks of basic information (MIB, from the English. Master Information Blocks) are transmitted via the Strategic Missile Forces channel.

The downlink L1 / L2 control channel includes a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (EPDCCH), a physical control format indication channel (PCFICH) , from the English Physical Control Format Indicator Channel) and the physical indicator channel of the hybrid ARQ (PHICH, from the English Physical Hybrid-ARQ Indicator Channel). Downlink Control Information (DCI), including PDSCH and / or PUSCH scheduling information, is transmitted on the PDCCH.

In addition, scheduling information can be communicated using DCI. For example, a DCI for scheduling a downlink data reception may be called a downlink assignment, and a DCI for scheduling an uplink data transmission may be called an uplink grant.

The number of OFDM symbols used for the PDCCH is transmitted on the PCFICH. Hybrid Automatic Repeat reQuest (HARQ) transmission acknowledgment information (also called, for example, retransmission control information, HARQ-ACK or ACK / NACK) for PUSCH is transmitted on the PHICH. EPDCCH is frequency division multiplexed with PDSCH (Downlink Shared Data Channel) and is used for DCI transmission, similar to PDCCH.

As uplinks, the radio system 1 uses an uplink common channel (PUSCH: physical uplink common channel) shared by each user terminal 20, an uplink control channel (PUCCH: physical uplink control channel), and a random access channel (PRACH: physical random access channel ( from English Physical Random Access Channel)). User data and higher layer control information are transmitted on the PUSCH channel. In addition, downlink radio quality information (CQI: Channel Quality Indicator), transmission acknowledgment information, and scheduling request (SR) are transmitted on the PUCCH. A random access preamble for establishing a connection with cells is transmitted on the PRACH channel.

As the downstream reference signals, the radio communication system 1 transmits a cell specific reference signal (CRS), a channel status information reference signal (CSI-RS), a demodulation reference signal (DMRS) and a positioning reference signal (PRS) ... In addition, the radio communication system 1 transmits a Sounding Reference Signal (SRS) and a demodulation reference signal (DMRS) as uplink reference signals. In this regard, the DMRS may be referred to as a “user terminal-specific reference signal (UE-specific reference signal)”. In addition, the reference signal to be transmitted is not limited to the above.

(Base radio station)

FIG. 17 is a diagram illustrating one example of a general configuration of a radio base station according to one embodiment. The radio base station 10 includes a plurality of transmit / receive antennas 101, amplification sections 102 and transmit / receive sections 103, a baseband signal processing section 104, a call processing section 105, and a communication channel interface 106. In this regard, it is only necessary that the radio base station 10 be configured to include one or more of each of the transmit / receive antennas 101, gain sections 102, and transmit / receive sections 103.

The user data transmitted from the radio base station 10 to the user terminal 20 on the downlink is input from the higher-level station apparatus 30 to the baseband signal processing section 141 via the communication channel interface 106.

The baseband signal processing section 104 performs packet data conversion protocol (PDCP) layer processing, user data segmentation and concatenation, RLC (Radio Link Control) layer transmission processing, such as control radio link control (RLC) retransmission, medium access control (MAC) retransmission control (e.g., HARQ transmission processing), and transmission processing such as scheduling, transmission format selection, channel coding, inverse fast Fourier transform (IFFT, Inverse Fast Fourier Transform), and pre-coding user data processing, and transmits the user data to each transmit / receive section 103. In addition, the baseband signal processing section 104 also performs transmission processing such as channel coding and FFT for the downlink control signal, and transmits the downlink control signal to each transmission / reception section 103.

Each section 103 of the transmission / reception converts the baseband signal, pre-encoded and output for each antenna from the section 104 of the processing of the baseband signal into the radio frequency range, and transmits the RF signal. The RF signal subjected to frequency conversion by each transmission / reception section 103 is amplified by each amplifying section 102 and transmitted from each transmission / reception antenna 101. The transmit / receive sections 103 may include transmitters / receivers, transmit / receive circuits, or transmit / receive apparatuses characterized based on general knowledge in the art of the present invention. In this regard, transmission / reception sections 103 may be assembled as integral transmission / reception sections, or may comprise transmission sections and reception sections.

At the same time, each amplifying section 144 amplifies the RF signal received by each transmit / receive antenna 101 as an upstream signal. Each section 103 transmit / receive receives an uplink signal amplified by each section 102 amplification. Each section 103 of the transmission / reception performs frequency conversion of the received signal into a baseband signal, and outputs the baseband signal to the baseband signal processing section 104.

Baseband signal processing section 104 performs fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing, error correction decoding, reception processing for MAC retransmission control, and RLC and PDCP layer reception processing for user data included in the input the uplink signal, and transmits user data to the higher-level station apparatus 30 via the communication channel interface 106. The call processing section 105 performs call processing (eg, tuning and resetting) the communication channel, state management of the radio base station 10, and radio resource management.

The link interface 106 transmits and receives signals to and from the upper station apparatus 30 via a predetermined interface. In addition, the link interface 106 can transmit and receive (signaling back) signals to and from another radio base station 10 via the interface base station interaction (for example, fiber optic compatible with a common open radio interface (CPRI, from the English Common Public Radio Interface) or X2 interface).

Each section 103 transmission / reception can receive the uplink control channel on multiple slots by using predetermined resources (eg, PUCCH resources).

Each section 103 of the transmission / reception can transmit information related to the PUCCH resources to the user terminal 20.

FIG. 18 is a diagram illustrating one example of a functional configuration of a radio base station according to one embodiment of the present invention. In addition, this example mainly illustrates functional blocks of characteristic parts in accordance with the present embodiment, and assumes that the radio base station 10 also contains other functional blocks necessary for radio communication.

The baseband signal processing section 104 comprises at least a control section 301 (scheduler), a transmission signal generating section 302, a display section 303, a received signal processing section 304, and a measurement section 305. In addition, these components are only required for inclusion in the radio base station 10, and some or all of these components may not be included in the baseband signal processing section 104.

The control section 301 (scheduler) controls the entire radio base station 10. The control section 301 may comprise a controller, control circuit, or control apparatus based on general knowledge in the art of the present invention.

The control section 301 controls, for example, generating signals from the transmission signal generating section 302 and assigning signals to the display section 303. In addition, the control section 301 controls the signal reception processing of the received signal processing section 304 and the signal measurement of the measurement section 305.

Control section 301 controls scheduling (eg, resource allocation) of system information, downlink data signal (eg, PDSCH signal), and downlink control signal (eg, PDCCH and / or EPDCCH signal, representing, for example, confirmation information transmission). In addition, the control section 301 controls the generation of the downlink control signal and the downlink data signal based on the result obtained by determining whether or not to perform retransmission control for the uplink data signal.

Control section 301 controls the scheduling of synchronization signals (e.g., Primary Synchronization Signal (PSS) / Secondary Synchronization Signal (SSS)) and downstream reference signals (e.g., CRS, CSI-RS and DMRS).

Control section 301 controls the scheduling of an uplink data signal (e.g., a signal transmitted on PUSCH), an uplink control signal (e.g., a signal transmitted on PUCCH and / or PUSCH and representing transmission acknowledgment information), a random access preamble (e.g., a signal transmitted on over PRACH) and uplink reference.

The control section 301 may perform control for receiving the UCI by using predetermined resources (eg, PUCCH resources).

The transmission signal generating section 302 generates a downstream signal (such as a downstream control signal, a downstream data signal, or a downstream reference signal) based on an instruction from the control section 301, and outputs the downstream signal to the display section 303. The transmission signal generating section 302 may comprise a signal generator, a signal conditioning circuit, or a signal conditioning apparatus characterized based on the general knowledge in the art of the present invention.

The transmit signal generating section 302 generates, for example, a downlink (DL) assignment for reporting downlink data assignment information, and / or an uplink (UL) grant for reporting uplink data assignment information based on an instruction from control section 301. Both the DL grant and the UL grant are DCI and conform to the DCI format. In addition, the transmission signal generating section 302 performs coding processing and modulation processing for the downlink data signal in accordance with the coding rate and modulation scheme determined based on Channel State Information (CSI) from each user terminal 20.

The display section 303 maps the downstream signal generated by the transmission signal generating section 302 to predetermined radio resources based on the instruction from the control section 301, and outputs the downstream signal to each transmission / reception section 103. The display section 303 may comprise a display, display circuit, or display apparatus characterized based on general knowledge in the art of the present invention.

The received signal processing section 304 performs reception processing (eg, de-mapping, demodulation, and decoding) on the received signal input from each transmission / reception section 103. In this regard, the received signal is, for example, an uplink signal (such as an uplink control signal, an uplink data signal, or an uplink reference signal) transmitted from the user terminal 20. The received signal processing section 304 may comprise a signal processor, a signal processor, or signal processing apparatus characterized on the basis of general knowledge in the field of technology in accordance with the present invention.

The received signal processing section 304 outputs the information decoded by the reception processing to the control section 301. For example, upon receiving a PUCCH including a HARQ-ACK, the received signal processing section 304 outputs the HARQ-ACK to the control section 301. In addition, the received signal processing section 304 outputs the received signal and / or the signal after the reception processing to the measuring section 305.

Measurement section 305 makes a measurement with respect to the received signal. Measurement section 305 may comprise a meter, metering circuit, or metering apparatus characterized based on general knowledge in the art of the present invention.

For example, measurement section 305 may perform radio resource management (RRM) measurements or channel status information (CSI) measurements based on the received signal. The measurement section 305 can measure the received power (e.g., the received power of the reference signal (RSRP)), the received quality (e.g., the received quality of the reference signal (RSRQ), the ratio of the signal - interference plus noise (SINR, from the English Signal to Interference plus Noise Ratio) or the signal-to-noise ratio (SNR, from the English Signal to Noise Ratio), the signal level (for example, the indicator of the received signal level (RSSI, from the English Received Signal Strength Indicator)) or channel information (eg, CSI) Measurement section 305 may output the measurement result to control section 301.

(User terminal)

FIG. 19 is a diagram illustrating one example of a general configuration of a user terminal according to one embodiment. The user terminal 20 includes a plurality of transmit / receive antennas 201, gain sections 202 and transmit / receive sections 203, a baseband signal processing section 204, and an application section 105. In this regard, it is only necessary that the user terminal 20 be configured to include one or more of each of transmit / receive antennas 201, gain sections 202, and transmit / receive sections 203.

Each section 165 amplification amplifies the RF signal received by each antenna 201 transmit / receive. Each section 203 transmit / receive receives a downlink signal amplified by each section 202 amplification. Each section 203 transmission / reception performs frequency conversion of the received signal into a baseband signal, and outputs the baseband signal to the baseband signal processing section 204. The transmit / receive sections 203 may comprise transmitters / receivers, transmit / receive circuits, or transmit / receive apparatuses characterized based on general knowledge in the art of the present invention. In this regard, transmit / receive sections 203 may be assembled as integral transmit / receive sections, or may comprise transmit sections and receive sections.

The baseband signal processing section 204 performs FFT processing, error correction decoding, and retransmission control reception processing for the baseband input signal. Baseband signal processing section 204 transmits downlink user data to application section 205. Application section 205 performs processing related to layers higher than the physical layer and the MAC layer. In addition, the baseband signal processing section 204 may also transmit downlink broadcast information to the application section 205.

On the other hand, the application section 205 inputs upstream user data into the baseband signal processing section 204. Baseband signal processing section 204 performs retransmission control transmission processing (e.g., HARQ transmission processing), channel coding, precoding, discrete Fourier transform (DFT) processing, and IFFT processing for uplink user data, and transmits uplink user data to each transmission section 203 / reception.

Each transmission / reception section 203 converts the baseband signal output from the baseband signal processing section 204 to a radio frequency range, and transmits an RF signal. The RF signal subjected to frequency conversion by each transmit / receive section 203 is amplified by each amplifying section 202 and transmitted from each transmit / receive antenna 201.

Each section 203 transmit / receive can receive the uplink control channel on multiple slots by using predetermined resources (eg, PUCCH resources).

Each section 203 transmit / receive may receive information related to PUCCH resources from the radio base station 10.

FIG. 20 is a diagram illustrating one example of a functional configuration of a user terminal according to one embodiment. In addition, this example mainly illustrates functional blocks of characteristic parts according to the present embodiment, and assumes that the user terminal 20 also contains other functional blocks necessary for radio communication.

The baseband signal processing section 204 of the user terminal 20 comprises at least a control section 401, a transmission signal generating section 402, a display section 403, a received signal processing section 404, and a measurement section 405. In addition, these components are only required for inclusion in the user terminal 20, and some or all of these components may not be included in the baseband signal processing section 204.

The control section 401 controls the entire user terminal 20. The control section 401 may comprise a controller, control circuit, or control apparatus characterized by general knowledge in the art of the present invention.

The control section 401 controls, for example, generating signals from the transmission signal generating section 402 and assigning signals to the display section 403. In addition, the control section 401 controls the signal reception processing of the received signal processing section 404 and the signal measurement of the measurement section 405.

The control section 401 receives, from the received signal processing section 404, a downlink control signal and a downlink data signal transmitted from the radio base station 10. The control section 401 controls the generation of an uplink control signal and / or an uplink data signal based on the result obtained by determining whether or not perform retransmission control for the downlink control signal and / or the downlink data signal.

When changing the active part of the bandwidth (BWP) (applying BWP adaptation) during transmission of the uplink control channel (multi-slot PUCCH) on multiple slots, the control section 401 may control the transmission of the multi-slot PUCCH after changing the BWP.

The control section 401 may perform control for stopping the transmission of the uplink control channel after changing the BWP.

When frequency hopping is enabled for a multi-slot PUCCH, control section 401 may determine the second hop frequency offset based on the first hop frequency offset based on the active BWP (i.e., preliminary BWP change before BWP change, and subsequent BWP change after BWP change).

The control section 401 may determine the start position of the resource indices of the multi-slot PUCCH based on the active BWP. Control section 401 may determine the multi-slot PUCCH resources based on information (eg, PUCCH resource set) configured for the active BWP, among the multi-slot PUCCH configuration information (eg, PUCCH resource set) configured for each BWP.

Upon receiving from the received signal processing section 404 various pieces of information communicated from the radio base station 10, the control section 401 may update the parameters used for the control based on the various pieces of information.

The transmission signal generating section 402 generates an upward signal (such as an upward control signal, an upward data signal, or an upward reference signal) based on an instruction from the control section 401, and outputs the upward signal to the display section 403. The transmission signal generating section 402 may comprise a signal generator, a signal conditioning circuit, or a signal conditioning apparatus characterized based on general knowledge in the art of the present invention.

The transmission signal generating section 402 generates an uplink control signal related to transmission confirmation information and Channel State Information (CSI) based on, for example, an instruction from the control section 401. In addition, the transmission signal generating section 402 generates an uplink data signal based on an instruction from the control section 401. When, for example, the downlink control signal reported from the radio base station 10 includes a UL grant, the transmission signal generating section 402 is instructed by the control section 401 to generate an uplink data signal.

The display section 403 maps the upstream signal generated by the transmission signal generating section 402 to radio resources based on the instruction from the control section 401, and outputs the upstream signal to each transmission / reception section 203. The display section 403 may comprise a display, display circuit, or display apparatus characterized based on general knowledge in the art of the present invention.

The received signal processing section 404 performs reception processing (eg, de-mapping, demodulation, and decoding) on the received signal input from each transmission / reception section 203. In this regard, the received signal is, for example, a downlink signal (such as a downlink control signal, a downlink data signal, or a downlink reference signal) transmitted from the radio base station 10. The received signal processing section 404 may comprise a signal processor, a signal processor, or signal processing apparatus characterized on the basis of general knowledge in the field of technology in accordance with the present invention. In addition, the received signal processing section 404 may constitute a receiving section in accordance with the present invention.

The received signal processing section 404 outputs the information decoded by the receiving processing to the control section 401. Received signal processing section 404 outputs, for example, broadcast information, system information, RRC signaling and DCI to control section 401. In addition, the received signal processing section 404 outputs the received signal and / or the signal after receiving processing to the measuring section 405.

Measurement section 405 makes a measurement with respect to the received signal. Measurement section 405 may comprise a meter, metering circuit, or metering apparatus characterized based on general knowledge in the art of the present invention.

For example, measurement section 405 may perform RRM measurement or CSI measurement based on the received signal. Measurement section 405 may measure received power (eg, RSRP), received quality (eg, RSRQ, SINR, or SNR), signal strength (eg, RRSI), or channel information (eg, CSI). The measurement section 405 can output the measurement result to the control section 401.

(Hardware configuration)

In addition, the block diagrams used to describe the above embodiments illustrate blocks in functional units. These functional blocks (components) are implemented through an optional combination of hardware and / or software. In addition, the method for implementing each functional block is not limited to particular cases. That is, each functional block can be implemented by one physically and / or logically connected device, or can be implemented by a plurality of these devices formed by direct and / or indirect (using, for example, a wired connection and / or radio connection) connection of two or more physically and / or logically separate apparatuses.

For example, a radio base station, a user terminal according to one embodiment of the present invention, can function as computers that perform processing of the radio communication method in accordance with the present invention. FIG. 21 is a diagram illustrating one example of hardware configurations of a radio base station and a user terminal according to one embodiment. The above disclosed radio base station 10 and user terminal 20 can be physically configured as a computer apparatus that includes a processor 1001, a memory 1002, a storage device 1003, a communication apparatus 1004, an input apparatus 1005, an output apparatus 1006, and a bus 1007.

In this regard, the word "apparatus" in the following description can be understood as a circuit, device, or module. The hardware configurations of the radio base station 10 and user terminal 20 may be configured to include one or more of the apparatuses illustrated in FIG. 21, or can be configured without turning on some devices.

For example, in FIG. 21, only one processor 1001 is illustrated. However, there may be multiple processors. In addition, the processing can be performed by one processor, or can be performed by one or more processors simultaneously, sequentially, or in another manner. In addition, the processor 1001 may be implemented with one or more chips.

Each function of the radio base station 10 and user terminal 20 is realized by, for example, causing hardware such as processor 1001 and memory 1002 to read predetermined software (programs), and thus causing processor 1001 to perform an operation and control communication via communication device 1004, and control reading and / or writing data to memory 1002 and storage device 1003.

The processor 1001 causes, for example, the operating system to function to control the entire computer. The processor 1001 may include a central processing unit (CPU) including an interface to a peripheral apparatus, a control apparatus, an operative apparatus, and a register. For example, the above baseband signal processing section 104 (204) and call processing section 105 may be implemented by the processor 1001.

In addition, the processor 1001 reads programs (program codes), program module or data from storage 1003 and / or communication apparatus 1004 into memory 1002 and performs various types of processing in accordance with these programs, program modules or data. As programs, programs are used that cause the computer to execute at least a portion of the operations disclosed in the above-mentioned embodiments. For example, the control section 401 of the user terminal 20 can be implemented with a control program stored in the memory 1002 and operating on the processor 1001, and other functional blocks can also be implemented in a similar manner.

Memory 1002 is a computer-readable recording medium, and may comprise, for example, at least one of read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), random access memory ( RAM) or other suitable storage medium. Memory 1002 may be referred to as a register, cache, or main memory (main storage). Memory 1002 can store programs (program codes) and a program module that can be executed to perform a radio communication method according to one embodiment.

The drive 1003 is a computer-readable recording medium and may contain, for example, at least one of the following: a floppy disk, a floppy disk (registered trademark), a magnetic-optical disk (for example, a compact disk (CD-ROM)) , digital versatile disc and Blu-ray (registered trademark) disc, removable disc, hard drive, smart card, flash memory device (eg card, memory stick, key drive), magnetic stripe, database , server and other suitable storage medium. The drive 1003 may be referred to as auxiliary storage.

Communications apparatus 1004 is hardware (transmitter / receiver) that communicates between computers via wired and / or radio networks and may also be referred to as, for example, a network device, a network controller, a network card, and a communications module. Communication apparatus 1004 may be configured to include a high frequency switch, duplexer, filter, and frequency synthesizer to implement, for example, frequency division duplex (FDD) and / or time division duplex (TDD) , from the English Time Division Duplex). For example, the above disclosed transmit / receive antennas 101 (201), amplification sections 102 (202), transmit / receive sections 103 (203), and a communication channel interface 106 may be implemented by the communication apparatus 1004.

Input apparatus 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, or sensor) that receives input from the outside. The output apparatus 1006 is an output device (such as a display, speaker, or light-emitting diode (LED) indicator) that sends the output outward. In addition, the input apparatus 1005 and the output apparatus 1006 may be an integral component (eg, a touch panel).

In addition, each device, such as processor 1001 or memory 1002, is connected via a bus 1007 that communicates with information. Bus 1007 can be formed using a single bus or can be formed using different buses for each apparatus.

In addition, the radio base station 10 and user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC). Integrated Circuit), Programmable Logic Device (PLC), Field Programmable Gate Array (FPGA). Hardware can be used to implement part or all of the functional blocks. For example, processor 1001 can be implemented using at least one of these types of hardware.

(Modified example)

In addition, each term disclosed in this specification and / or each term necessary to understand this specification may be replaced by terms having the same or similar meaning. For example, the channel and / or symbol can be signals (alarms). In addition, the signal can be a message. The reference signal can be abbreviated to RS (from the English. Reference Signal - reference signal) or can be called a control signal or pilot signal, depending on the applicable standards. In addition, the component carrier (CC) may be referred to as cell, carrier, and carrier frequency.

In addition, a radio frame may include one or multiple durations (frames) in the time domain. Each of one or a plurality of durations (frames) that make up a radio frame may be referred to as a subframe. In addition, a subframe may include one or multiple slots in the time domain. A subframe can have a fixed length of time (eg, one millisecond) that is independent of numerology.

In addition, a slot may include one or multiple symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols) in the time domain. In addition, the slot can represent a unit of time based on numerology. In addition, a slot can include a plurality of mini-slots. Each mini-slot can include one or multiple symbols in the time domain. In addition, a mini-slot can be referred to as a subslot.

Each of a radio frame, subframe, slot, mini-slot, and symbol denotes a unit of time for signaling. Other appropriate names for radio frame, subframe, slot, mini-slot, and symbol may be used. For example, one subframe can be called a transmission time interval (TTI), multiple adjacent subframes can be called TTIs, or one slot or one mini-slot can be called a TTI. That is, the subframe and / or TTI may be a subframe (1 ms), in accordance with legacy LTE, may be a duration (eg, 1 to 13 symbols) shorter than 1 ms, or may be longer than 1 ms. In addition, the unit that denotes the TTI may be referred to as a slot or mini-slot instead of a subframe.

In this regard, TTI refers, for example, to the minimum scheduling time unit for radio communications. For example, in the LTE system, the radio base station performs scheduling for the allocation of radio resources (bandwidth or transmit power that can be used in each user terminal) in TTI units for each user terminal. In this regard, the definition of TTI is not limited to this.

The TTI may be a unit of time to transmit a channel encoded data packet (transport block), code block and / or codeword, or may be a unit of scheduling or channel adaptation processing. In addition, when the TTI is set, the time period (eg, the number of symbols) in which the transport block, code block, and / or codeword are actually displayed may be shorter than the TTI.

In addition, when one slot or one mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may represent a minimum scheduling time unit. In addition, the number of slots (the number of mini-slots), which is the minimum unit of scheduling time, can be adjusted.

A TTI having a time duration of 1 ms may be referred to as a common TTI (LTE Release 8-12 TTI), a standard TTI, a long TTI, a common subframe, a standard subframe, or a long subframe. A TTI that is shorter than the total TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-slot, or a sub-slot.

In addition, a long TTI (for example, a common TTI or subframe) can be understood as a TTI with a time duration greater than 1 ms, and a short TTI (for example, a shortened TTI) can be understood as a TTI with a TTI length that is less than the TTI length of the long TTI and equal to or more than 1 ms.

A resource block (RB) is a unit of assignment of time domain or frequency domain resources and may include one or multiple contiguous subcarriers in the frequency domain. In addition, the RB may include one or multiple symbols in the time domain, or may be one slot, one mini-slot, one subframe, or one TTI in length. One TTI or one subframe may include one or multiple resource blocks. In this regard, one or a plurality of RBs can be called a Physical Resource Block (PRB), a Sub-Carrier Group (SCG), a Resource Element Group (REG). ), a PRB pair, or an RB pair.

In addition, a resource block can include one or many resource elements (RE, from the English. Resource Element). For example, one RE can represent a radio resource region or one subcarrier and one symbol.

In this regard, the structures of the above radio frame, subframe, slot, mini-slot, and symbol are purely exemplary structures. For example, configurations such as the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in the composition of RB, the number of symbols in the TTI, the symbol length and the length of the cyclic prefix (CP, from the English Cyclic Prefix) can be changed in various ways.

In addition, the information and parameters disclosed herein may be expressed in absolute terms, may be expressed using relative values with respect to target values, or may be expressed using other relevant information. For example, a radio resource can be designated with a predetermined index.

The names used for the parameters in the present description are not to be understood in a limiting sense. For example, different channels (physical uplink control channel (PUCCH) and physical downlink control channel (PDCCH)) and information items may be identified based on different suitable names. Therefore, the various names assigned to these various channels and items of information should not be construed in a restrictive sense.

The information and signals disclosed herein can be expressed using one of a variety of techniques. For example, data, instructions, commands, information, signals, bits, symbols, and microcircuits mentioned in the above description can be expressed as electric voltage, electric current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or their optional combinations. ...

In addition, information and signals can be output from a higher level to a lower level and / or from a lower level to a higher level. Information and signals can be input and output through a variety of network nodes.

Input and output information and signals can be stored in a specific location (eg memory) or can be summarized in a control table. Information and signals input and output can be rewritten, updated or additionally recorded. Information and output signals can be deleted. Information and input signals can be transferred to other devices.

The communication of information is not limited to the aspects / embodiments disclosed herein, and may be performed in other manners. For example, information may be communicated through physical layer signaling (e.g., downlink control information (DCI) and uplink control information (UCI)), higher layer signaling (e.g., radio resource control (RRC) signaling), information broadcast (basic information blocks (MIB) and system information blocks (SIB)) and medium access control (MAC) signaling), other signals, or a combination of the above.

In addition, the physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal) or L1 control information (L1 control signal). In addition, the RRC signaling may be called an RRC message and may be, for example, an RRC connection setup message (RRCConnectionSetup) or an RRC connection re-configuration message (RRCConnectionReconfiguration). In addition, the MAC signaling can be signaled by, for example, a MAC Control Element (MAC CE).

In addition, the message of the specified information (for example, the message "is equal to X") is not limited to an explicit message, but can be performed implicitly (for example, by not reporting this specified information or by communicating other information).

The decision can be made based on a value (0 or 1) expressed as one bit, it can be made based on a Boolean value expressed as true or false, or it can be made by comparing numeric values (eg, comparing to a given value).

Whether the software is called software, firmware, microcode, or hardware description language or other names, software should be broadly interpreted as commands, instruction set, code, code segment, program code, program, subroutine, software module , application, application program, software package, algorithm, subalgorithm, object, executable file, execution thread, procedure or function.

In addition, software, commands and information can be transmitted and received through the transmission medium. When, for example, software is transferred from websites, servers or other remote sources using wired technologies (for example, coaxial cables, fiber optic cables, twisted pairs and digital subscriber lines (DSL) and / or radio technologies (for example , infrared radiation and microwaves), these wired technologies and / or radio technologies are included in the definition of the transmission medium.

The terms "system" and "network" as used herein are used interchangeably.

In the present description, the terms base station (BS), radio base station, eNB, gNB, cell, sector, cell group, carrier, and component carrier may be used together. A base station is also referred to in some cases as a fixed station, NodeB, eNodeB (eNB), access point, transmission point, reception point, femtocell, or small cell.

A base station can accommodate one or multiple (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into many smaller areas. Each smaller area can also provide communication service through a base station subsystem (eg, a small home base station (RRH)). The term "cell" or "sector" refers to a portion of the entire coverage area of a base station and / or a base station subsystem providing communication service in that coverage area.

In the present description, the terms “mobile station (MS),“ user terminal ”,“ user equipment (UE), and “terminal” may be used interchangeably.

A mobile station may also be called a subscriber station, mobile station, subscriber station, wireless station, remote station, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, telephone, user agent, mobile client, client, or in some cases other suitable terms.

In addition, a user terminal can be understood as a radio base station in the present description. For example, each aspect / embodiment of the present invention can be applied to a configuration in which communication between a radio base station and a user terminal is replaced by communication between multiple user terminals (D2D: Device-to-Device). In this case, the user terminal 20 can be configured to include the functions of the aforementioned radio base station 10. In addition, words such as “upstream” and “downstream” can be understood as “side”. For example, an uplink can be understood as a side channel.

Likewise, a user terminal in the present description can be understood as a radio base station. In this case, the radio base station 10 can be configured to include the functions of the above user terminal 20.

In the present description, operations performed by a base station are performed by an upper node of that base station, as appropriate. Obviously, in a network containing one or a plurality of network nodes, including base stations, various operations performed to communicate with a terminal may be performed by base stations, one or more network nodes (which could conceivably be, for example, mobility management nodes (MME, from English. Mobility Management Entities) or serving gateways (S-GW, from English. Serving-Gateways), not limited to them), other than base stations, or a combination of both.

Each aspect / embodiment disclosed herein may be used by itself, may be used in combination, or may be switched and used in execution. In addition, the order of processing procedures, the sequence and the flowchart according to each aspect / embodiment disclosed in the present description may be changed, as long as it is not inconsistent. For example, the method disclosed herein represents various steps performed in an exemplary order and is not limited to the specific order presented.

Each aspect / embodiment disclosed herein is applicable to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation (4G), 5th generation (5G) mobile communication system, future radio access system (FRA), new radio access technology (New-RAT), new radio access (NX), future generation radio access (FX), global system for mobile communications (GSM Global System for Mobile communications) (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX ( registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using suitable radio communication methods, and / or next generation systems expandable from these systems.

The phrase "based on" as used herein does not mean "based on only" unless otherwise indicated. In other words, the phrase “based on” means both “based on only” and “based on at least”.

Each reference to elements using designations such as "first" and "second" as used herein does not generally limit the number or order of those elements. These designations can be used in the present description in a convenient way to distinguish between two or more elements. Thus, referring to the first and second elements does not mean that only two elements can be used, or that the first element should in some way precede the second element.

The term "decision (determination)" used in the present description, in some cases, includes a variety of operations. For example, “decision (determination)” can refer to “decision (determination)”, “calculation”, “calculation”, “processing”, “inferring”, “investigation”, “viewing” (for example, viewing a table, database, or other data structure) and "setting". In addition, “decision (determination)” can refer to “decision (determination)”, “reception” (for example, receiving information), “transmission” (for example, transmitting information), “input”, “output” and “access” (for example, accessing data in memory). In addition, “decision (determination)” can refer to “decision (determination)”, “resolution”, “selection”, “selection”, “creation” and “comparison”. That is, “decision (determination)” may refer to the “decision (determination)” of an operation.

The words "connected" and "connected" as used in the present description, or any modification of these words, can mean both direct and indirect connection or connection between two or more elements, and can imply the presence of one or more intermediate elements between two elements, " connected "or" connected "to each other. Elements can be connected or connected physically, logically, or using a combination of physical and logical connections. For example, “connection” can mean “access”.

It should be understood that, as used herein, two elements are "connected" or "connected" to each other using one or more electrical wires, cables and / or printed electrical connection, and using electromagnetic energy with wavelength in radio frequency regions , microwave regions and / or light regions (both visible and invisible), in some non-limiting and specific examples.

The sentence "A and B are different" in the present description can mean "A and B are different from each other." Words like "separate" and "connected" can also be interpreted in a similar way.

When the words “including” and “comprising” and modifications of these words are used in the present description or the claims, the words are intended to be understood in a comprehensive sense, similar to the word “having”. In addition, the word "or" used in the present description or claims should not be understood as exclusive OR.

Above, the present invention has been disclosed in detail. However, for a person skilled in the art it is obvious that the present invention is not limited to the embodiment disclosed in the present description. The present invention can be carried out in modified and changed aspects without deviating from the spirit and scope of the invention defined by the claims. Accordingly, the disclosure of the present description is intended to be illustrative by way of example, and is not in any way limiting to the present invention.

Claims (15)

1. Terminal containing: a transmission section configured to transmit an uplink control channel on a plurality of slots; and and a control section, configured, when the active bandwidth (BWP) has changed, to exercise control to stop transmission of the uplink control channel. 2. The terminal of claim 1, wherein the control section is configured, when the active bandwidth (BWP) has changed over time, to stop transmitting the uplink control channel in the frequency resources of the specified range. 3. A radio communication method for a terminal, including: transmitting an uplink control channel on multiple slots; and when the active part of the bandwidth (BWP) has changed, the control is exercised to stop transmission of the uplink control. 4. Base station containing: a receiving section configured to receive an uplink control channel on a plurality of slots; wherein the control section is configured, when the active bandwidth portion (BWP) has changed, to stop receiving the uplink control channel. 5. A radio communication system containing a base station and a terminal, and the base station contains: a receiving section configured to receive an uplink control channel on a plurality of slots, and the terminal contains: a transmission section configured to transmit an uplink control channel on a plurality of slots; and and a control section, configured, when the active bandwidth (BWP) has changed, to exercise control to stop transmission of the uplink control channel.

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