WO2020202545A1

WO2020202545A1 - User device and base station device

Info

Publication number: WO2020202545A1
Application number: PCT/JP2019/015105
Authority: WO
Inventors: 高橋　秀明; 徹内野; 大將梅田
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2019-04-05
Filing date: 2019-04-05
Publication date: 2020-10-08
Also published as: JPWO2020202545A1

Abstract

A user device of the present invention has: a reception unit which receives, from a base station, a setting relating to a notification for suppressing in-device interference in an NR (new radio) system; a control unit which causes information, indicating a carrier frequency for each BWP (bandwidth part) of one or a plurality of uplinks constituting an uplink carrier aggregation, to be included in the notification for suppressing in-device interference when in-device interference, towards another system, by the uplink carrier aggregation is detected; and a transmission unit which transmits the notification, for suppressing the in-device interference, to the base station device.

Description

User equipment and base station equipment

The present invention relates to a user device and a base station device in a wireless communication system.

In NR (New Radio) (also called "5G"), which is the successor system to LTE (Long Term Evolution), the requirements are a large-capacity system, high-speed data transmission speed, low delay, and simultaneous operation of many terminals. Techniques that satisfy connection, low cost, power saving, etc. are being studied (for example, Non-Patent Document 1).

Introducing In-Device Coexistence (IDC) (for example, Non-Patent Document 2) defined by LTE in NR wireless communication systems is being considered. For example, when LTE uplink carrier aggregation causes interference with other wireless devices (for example, GNSS (Global Navigation Satellite System) device, WLAN (Wireless Local Area Network) device, etc.) provided in the same user device. , The LTE communication is controlled so as to reduce the interference.

When introducing IDC in a wireless communication system, it is necessary to notify the network of the center frequency of the uplink carrier in order to calculate which frequency band the intermodulation distortion extends to. In LTE, the notification was executed using information indicating a measurement object. However, in NR, since the information indicating the measurement target does not include the information indicating the center frequency, a mechanism for notifying the network of the center frequency of the uplink carrier is required.

The present invention has been made in view of the above points, and an object of the present invention is to notify a network of information for suppressing intermodulation distortion in a wireless communication system.

According to the disclosed technology, the receiver that receives the setting related to the notification for suppressing the in-device interference in NR (New Radio) from the base station device and the in-device interference to other systems by the uplink carrier aggregation When detected, the control unit including information indicating the carrier frequency for each BWP (Bandwidth Part) of one or a plurality of uplinks constituting the uplink carrier aggregation in the notification for suppressing the interference in the device, and the above. A user device is provided that includes a transmitter that transmits a notification for suppressing intra-device interference to the base station device.

According to the disclosed technology, it is possible to notify the network of information for suppressing intermodulation distortion in a wireless communication system.

It is a figure for demonstrating the wireless communication system in embodiment of this invention. It is a figure for demonstrating the interference in a device. It is a figure for demonstrating the example (1) of the intermodulation distortion. It is a figure for demonstrating the example (2) of the intermodulation distortion. It is a figure for demonstrating the example (3) of the intermodulation distortion. It is a sequence diagram for demonstrating the operation example in Embodiment of this invention. It is a specification change example (1) which concerns on the operation example in embodiment of this invention. It is a specification change example (2) which concerns on the operation example in embodiment of this invention. It is a specification change example (3) which concerns on the operation example in embodiment of this invention. It is a specification change example (4) which concerns on the operation example in embodiment of this invention. It is a specification change example (5) which concerns on the operation example in embodiment of this invention. It is a specification change example (6) which concerns on the operation example in embodiment of this invention. It is a specification change example (7) which concerns on the operation example in embodiment of this invention. It is a figure which shows an example of the functional structure of the base station apparatus 10 in embodiment of this invention. It is a figure which shows an example of the functional structure of the user apparatus 20 in embodiment of this invention. It is a figure which shows an example of the hardware composition of the base station apparatus 10 or the user apparatus 20 in embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

Existing technology is appropriately used in the operation of the wireless communication system according to the embodiment of the present invention. However, the existing technology is, for example, an existing LTE, but is not limited to the existing LTE. Further, the term "LTE" used in the present specification shall have a broad meaning including LTE-Advanced and LTE-Advanced and later methods (eg, NR) unless otherwise specified.

Further, in the embodiment of the present invention described below, SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical) used in the existing LTE. Use terms such as random access channel). This is for convenience of description, and signals, functions, etc. similar to these may be referred to by other names. Further, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH and the like. However, even if the signal is used for NR, it is not always specified as "NR-".

Further, in the embodiment of the present invention, the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other system (for example, Flexible Duplex, etc.). Method may be used.

Further, in the embodiment of the present invention, "configuring" the radio parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station apparatus 10 Alternatively, the radio parameter notified from the user device 20 may be set.

FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. The wireless communication system according to the embodiment of the present invention includes a base station device 10 and a user device 20 as shown in FIG. Although FIG. 1 shows one base station device 10 and one user device 20, this is an example, and there may be a plurality of each.

The base station device 10 is a communication device that provides one or more cells and performs wireless communication with the user device 20. The physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. The base station apparatus 10 transmits a synchronization signal and system information to the user apparatus 20. Synchronous signals are, for example, NR-PSS and NR-SSS. The system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information. As shown in FIG. 1, the base station apparatus 10 transmits a control signal or data to the user apparatus 20 by DL (Downlink), and receives the control signal or data from the user apparatus 20 by UL (Uplink). Both the base station device 10 and the user device 20 can perform beamforming to transmit and receive signals. Further, both the base station device 10 and the user device 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Further, both the base station device 10 and the user device 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).

The user device 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the user apparatus 20 is provided by a wireless communication system by receiving a control signal or data from the base station apparatus 10 in DL and transmitting the control signal or data to the base station apparatus 10 in UL. Use various communication services.

FIG. 2 is a diagram for explaining in-device interference. As shown in FIG. 2, since a plurality of RATs (Radio Access Technology) are generally supported in the same user device 20, for example, an NR antenna, an LTE antenna, a GNSS antenna, and a WLAN antenna are mounted. The user device 20 includes an RF unit and a baseband unit in addition to an antenna corresponding to each RAT.

Since multiple wireless transmitters and receivers are placed very close to each other in the device, there is a possibility that one transmitter may interfere with another receiver when the frequency bands used are adjacent to each other. The dotted line in FIG. 2 shows an example in which a signal from an NR transmitter interferes with an LTE, GNSS (Global Navigation Satellite System) or WLAN (Wireless Local Area Network) receiver.

FIG. 3 is a diagram for explaining an example of intermodulation distortion. FIG. 3 is a diagram for explaining intermodulation distortion (IMD: InterModulation Distortion) in LTE-NR dual connectivity. In LTE-NR dual connectivity, a typical case where in-device interference as shown in FIG. 3 occurs can be considered. In FIG. 3, the LTE duplex system assumes FDD, and the NR duplex system assumes TDD. When the user device 200 that communicates with LTE-NR dual connectivity simultaneously transmits UL in two bands, IMD may occur. The user device 200 generates the IMD in the band having the frequency f3-f1 by simultaneously transmitting the band having the UL frequency f1 of LTE and the band having the UL frequency f3 of NR. Since the band having the frequency f3-f1 in which the IMD is generated overlaps with the band having the LTE DL frequency f2, it causes in-device interference in the LTE DL.

FIG. 4 is a diagram for explaining an example (1) of suppressing intermodulation distortion. In FIG. 4, an example in which IMD is suppressed by limiting the arrangement of radio resources in the frequency domain when in-device interference as shown in FIG. 3 occurs will be described. As shown in FIG. 4, when the band allocated in the frequency domain is reduced in the band having the UL frequency f3 of NR, the bandwidth of the generated IMD frequency f3-f1 is reduced in the frequency domain, and the LTE Does not overlap with the band of DL frequency f2. That is, IMD can be suppressed by limiting the arrangement of radio resources in the frequency domain.

FIG. 5 is a diagram for explaining an example (2) of suppressing intermodulation distortion. FIG. 5 describes an example in which IMD is suppressed by limiting the arrangement of radio resources in the time domain when in-device interference as shown in FIG. 3 occurs. As shown in FIG. 5, the transmission timing of the band having the UL frequency f3 of NR and the transmission timing of the band having the UL frequency f1 of LTE do not match. IMD does not occur when only one of LTE UL or NR UL is transmitted. That is, IMD can be suppressed by limiting the arrangement of radio resources in the time domain.

For NR, a proposal has been made to introduce the mechanism of In-Device Coexistence (IDC) specified by LTE. In LTE, when the IMD by UL-CA interferes with other systems (for example, GNSS, WLAN, etc.), the combination of the system to be interfered with and the UL carrier causing interference from the user device 20 Is reported to the network by the "InDeviceCoexIndication" message, which is RRC (Radio Resource Control) signaling.

The network that received the report by the "InDeviceCoexIndication" message changes the scheduling and adjusts in the frequency domain to deactivate or deconfigure the secondary cell to avoid interference.

In the LTE IDC, the user device 20 reports the UL carrier to the network via the measurement target ID (Measurement object ID). On the other hand, the information indicating the measurement target of NR does not include the information indicating the center frequency of the UL carrier. The information indicating the measurement target of NR includes the position of the SSB (Synchronization Signal Block) or the position of the CSI-RS (Channel State Information Reference Signal) resource as an offset from the position "Point A" of the reference frequency domain. ..

Intermodulation distortion is calculated from the position where the center frequency of the carrier is set to which frequency band the interference extends to. However, the information indicating the measurement target of NR does not include the center frequency of the carrier as described above.

Therefore, in NR, when the user device 20 reports the combination of UL carriers giving intermodulation distortion to the network, the information indicating the position of the center frequency of each UL carrier is provided for each cell and each BWP (Bandwidth Part). Specify to report to the network.

FIG. 6 is a sequence diagram for explaining an operation example according to the embodiment of the present invention. In step S1, the base station device 10 transmits "RRC reconstruction" to the user device 20, sets the RRC, and sets the user device 20 to execute the notification related to the IDC. For example, the user device 20 is set to transmit the notification "InDeviceCoexIndication" related to the IDC to the base station device 10 by the information element "idc-Config" included in the information element "otherConfig" included in the "RRC reconstruction". May be good.

In step S2, the user device 20 transmits a notification "InDeviceCoexIndication" related to the IDC to the base station device 10. The "InDeviceCoexIndication" message contains information indicating the combination of the interfered system and the UL carrier that is interfering when the IMD by UL-CA interferes with another system. In addition, the "InDeviceCoexIndication" message includes information indicating the DL carrier being interfered when the DL carrier is being interfered.

FIG. 7 is a specification change example (1) according to an operation example according to the embodiment of the present invention. FIG. 7 will be described with reference to the process when the operation of transmitting the “InDeviceCoexIndication” message is started. The "IDC problem" below is, for example, that it has been detected that the DL carrier is interfering, or that the IMD by UL-CA is interfering with other systems, and the user Corresponds to the state in which the device 20 cannot resolve the interference by its own device.

As shown in FIG. 6, for example, "RRC reconstruction" sets the user device 20 so that the notification related to the IDC is enabled. After the notification related to IDC is set to be enabled, if the user device 20 does not send the "InDeviceCoexIndication" message, and an IDC problem occurs in which one or more carriers to be measured interfere with each other. If there is an IDC problem in which one or more UL-CAs to be measured interfere with other systems, the transmission of the "InDeviceCoexIndication" message is started.

On the other hand, even if the user device 20 transmits the "InDeviceCoexIndication" message after the notification related to the IDC is set to be enabled, the IDC problem in which the carrier interferes with the carrier different from the "InDeviceCoexIndication" message transmitted immediately before. If there is an IDC problem that interferes with another system that is different from the "InDeviceCoexIndication" message sent immediately before, the transmission of the "InDeviceCoexIndication" message is started.

FIG. 8 is a specification change example (2) according to an operation example according to the embodiment of the present invention. The operation of transmitting the “InDeviceCexIndication” message will be described with reference to FIG.

As shown in FIG. 8, the user device 20 sets the content of the "InDeviceCoexIndication" message. When at least one NR carrier frequency is interfered by the IDC problem, the information element "affectedCarrierFreqCombList" includes all the interfered NR carrier frequencies to be measured. For example, the NR carrier frequency being interfered with may be notified by including the "MeasObjectID" which is the information indicating the measurement target in the information element "affectedCarrierFreqCombList". For each NR carrier frequency, "interferenceDirection" is set as "nr" in the information element "affectedCarrierFreqCombList".

Also, when the frequency of at least one UL-CA combination is interfering due to the IDC problem, another system (eg, GNSS, WLAN) that is interfering with the "victimSystemType" included in the information element "affectedCarrierFreqInfo". , Bluetooth (registered trademark)), and set "interference Direction" as "other".

When the other system being interfered with is WLAN or Bluetooth, the carrier frequency constituting the combination of UL-CA giving the interference to be measured is set to the "affectedCarrierFreqCombList" included in the information element "affectedCarrierFreqInfo". , Include using the information element "UplinkTxDirectCurentCell".

On the other hand, when the other system being interfered with is not WLAN or Bluetooth, as an option, a combination of UL-CA giving interference to be measured is added to "affectedCarrierFreqCombList" included in the information element "affectedCarrierFreqInfo". The constituent carrier frequencies are included using the information element "UplinkTxDirectCurentCell".

FIG. 9 is a specification change example (3) according to an operation example according to the embodiment of the present invention.
As shown in FIG. 9, the UL-DCCH message transmitted from the user device 20 to the network via the UL-DCCH (Dedicated Control Channel), which is a logical channel, includes "InDeviceCoexIndication".

FIG. 10 is a specification change example (4) according to an operation example according to the embodiment of the present invention. As shown in FIG. 10, the "InDeviceCoexIndication" message includes an information element "affectedCarrierFreqInfoList".

FIG. 11 is a specification change example (5) according to an operation example according to the embodiment of the present invention. As shown in FIG. 11, the information element "affectedCarrierFreqInfoList" includes one or more "affectedCarrierFreqInfo". The information element "affectedCarrierFreqInfo" includes "affectedCarrierFreqFreqCombList", "interferenceDirection" and "victimSystemType". "Interference Direction" can be set to "nr", "other" or "both", "nr" indicates that the DL-NR carrier is being interfered with, and "other" is another system such as WLAN. Indicates that is being interfered with, and "both" indicates that both the DL-NR carrier and other systems are being interfered with.

The information element "affectedCarrierFreqCombList" includes one or more "affectedCarrierFreq". The information element "affectedCarrierFreq" includes "dl-AffectedCarrierFreq" by "MeasOjectId" and "ul-AffectedCarrierFreq" by "UplinkTxDirectCurentCell". That is, the center frequency of the UL carrier is notified by "UplinkTxDirectCurentCell".

The information element "VictorSystemType" includes "gps", "glonass", "bds" or "galileo" indicating GNSS. Further, the information element "VictorSystemType" includes "wlan" indicating WLAN or "bt" indicating Bluetooth.

FIG. 12 is a specification change example (6) according to an operation example according to the embodiment of the present invention. As shown in FIG. 12, the information element "UplinkTxDirectCurentList" includes the position of the UL-BWP UL carrier direct frequency domain per serving cell associated with the BWP numerology and carrier bandwidth.

The information element "UplinkTxDirectCurentList" includes one or more "UplinkTxDirectCurentCell". The information element "UplinkTxDirectCurentCell" includes "txDirectCurentLocation". The information element "txDirectcurentLocation" includes any subcarrier index from 0 to 3301 and indicates the position of the direct frequency domain of the UL carrier per UL-BWP for each serving cell.

FIG. 13 is a specification change example (7) according to an operation example according to the embodiment of the present invention. As shown in FIG. 13, the information element “OtherConfig” includes “idc-Config”. The information element "idc-Config" may be set so that the user device 20 transmits the IDC-related notification "InDeviceCoexIndication" to the base station device 10. As described with reference to FIG. 6, the “OtherConfig” may be included in the “RRC configuration” message.

According to the above embodiment, when the user apparatus 20 reports the interference caused by the intermodulation distortion by UL-CA to the network in the NR by the mechanism of IDC, it accurately reports the frequency combination of the UL carriers giving the interference. be able to.

That is, in a wireless communication system, information for suppressing intermodulation distortion can be notified to the network.

(Device configuration)
Next, a functional configuration example of the base station device 10 and the user device 20 that execute the processes and operations described so far will be described. The base station apparatus 10 and the user apparatus 20 include a function of carrying out the above-described embodiment. However, the base station device 10 and the user device 20 may each have only a part of the functions in the embodiment.

<Base station device 10>
FIG. 14 is a diagram showing an example of the functional configuration of the base station device 10. As shown in FIG. 14, the base station apparatus 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in FIG. 14 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be performed.

The transmission unit 110 includes a function of generating a signal to be transmitted to the user device 20 side and transmitting the signal wirelessly. The receiving unit 120 includes a function of receiving various signals transmitted from the user apparatus 20 and acquiring information of, for example, a higher layer from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals and the like to the user device 20.

The setting unit 130 stores preset setting information and various setting information to be transmitted to the user device 20 in the storage device, and reads them out from the storage device as needed. The content of the setting information is, for example, a communication setting related to in-device interference of the user device 20 and the like.

As described in the embodiment, the control unit 140 sets the communication for suppressing the interference based on the notification regarding the interference in the device notified from the user device 20. The function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.

<User device 20>
FIG. 15 is a diagram showing an example of the functional configuration of the user device 20. As shown in FIG. 15, the user device 20 includes a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in FIG. 15 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be performed.

The transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station apparatus 10. Further, for example, the transmission unit 210 connects the other user device 20 to the PSCCH (Physical Sidelink Control Channel), PSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) as D2D communication. ) Etc., and the receiving unit 120 receives the PSCCH, PSSCH, PSDCH, PSBCH, etc. from the other user device 20.

The setting unit 230 stores various setting information received from the base station device 10 or the user device 20 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed. The setting unit 230 also stores preset setting information. The content of the setting information is, for example, a setting related to notification of interference in the user device 20 and the like.

As described in the embodiment, the control unit 240 detects the interference in the device and notifies the base station device 10 of the device or carrier receiving the interference. The function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.

(Hardware configuration)
The block diagrams (FIGS. 14 and 15) used in the description of the above embodiment show blocks of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by using two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices. The functional block may be realized by combining the software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't. For example, a functional block (constituent unit) that functions transmission is called a transmitting unit (transmitting unit) or a transmitter (transmitter). As described above, the method of realizing each of them is not particularly limited.

For example, the base station device 10, the user device 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. FIG. 16 is a diagram showing an example of the hardware configuration of the base station device 10 and the user device 20 according to the embodiment of the present disclosure. The above-mentioned base station device 10 and user device 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be done.

In the following explanation, the word "device" can be read as a circuit, device, unit, etc. The hardware configuration of the base station device 10 and the user device 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.

For each function in the base station device 10 and the user device 20, by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, the processor 1001 performs an calculation and the communication device 1004 performs communication. It is realized by controlling or controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, the above-mentioned control unit 140, control unit 240, and the like may be realized by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the control unit 140 of the base station device 10 shown in FIG. 14 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Further, for example, the control unit 240 of the user device 20 shown in FIG. 15 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Although it has been explained that the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be implemented by one or more chips. The program may be transmitted from the network via a telecommunication line.

The storage device 1002 is a computer-readable recording medium, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. It may be configured. The storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, Blu). -It may be composed of at least one of a ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip and the like. The storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 1003.

The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. The communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of. For example, the transmission / reception antenna, the amplifier unit, the transmission / reception unit, the transmission line interface, and the like may be realized by the communication device 1004. The transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.

Further, the base station device 10 and the user device 20 include a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. It may be configured to include hardware, and the hardware may realize a part or all of each functional block. For example, processor 1001 may be implemented using at least one of these hardware.

(Summary of embodiments)
As described above, according to the embodiment of the present invention, the receiving unit that receives the setting related to the notification for suppressing the interference in the device in NR (New Radio) from the base station apparatus, and the uplink carrier aggregation. When in-device interference with another system is detected, the carrier frequency for each BWP (Bandwidth Part) of one or more uplinks constituting the uplink carrier aggregation is notified in order to suppress the in-device interference. A user device is provided that includes a control unit that includes information indicating the above, and a transmission unit that transmits a notification for suppressing interference in the device to the base station device.

With the above configuration, when the user device 20 reports the interference caused by the intermodulation distortion by UL-CA to the network in the NR by the mechanism of IDC, the frequency combination of the UL carriers giving the interference is accurately set for each BWP. Can be reported. That is, in the wireless communication system, information for suppressing intermodulation distortion can be notified to the network.

The control unit may further include information indicating the carrier frequency of each uplink BWP constituting the uplink carrier aggregation in the notification for suppressing the interference in the device for each cell. With this configuration, the user apparatus 20 can accurately report the frequency combination of UL carriers that cause interference for each cell.

When the control unit detects in-device interference with the downlink carrier, the notification for suppressing the in-device interference may include information indicating that the downlink carrier is a measurement target. With this configuration, the user device 20 can accurately report the frequency of the DL carrier to be interfered with.

Further, according to the embodiment of the present invention, a transmission unit that transmits a setting related to a notification for suppressing in-device interference in NR (New Radio) to a user device, and an uplink carrier aggregation to another system. When in-device interference is detected in the user device, the in-device interference including information indicating the carrier frequency for each BWP (Bandwidth Part) of one or more uplinks constituting the uplink carrier aggregation is suppressed. Provided by a base station apparatus having a receiving unit for receiving a notification for suppressing interference in the device and a control unit for executing communication control for suppressing interference in the device based on the notification for suppressing interference in the device. Will be done.

(Supplement to the embodiment)
Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art can understand various modifications, modifications, alternatives, substitutions, and the like. There will be. Although explanations have been given using specific numerical examples in order to promote understanding of the invention, these numerical values are merely examples and any appropriate value may be used unless otherwise specified. The classification of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be used in combination with another item. It may be applied (as long as there is no contradiction) to the matters described in. The boundary of the functional unit or the processing unit in the functional block diagram does not always correspond to the boundary of the physical component. The operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components. With respect to the processing procedure described in the embodiment, the order of processing may be changed as long as there is no contradiction. For convenience of processing description, the base station apparatus 10 and the user apparatus 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of the base station apparatus 10 according to the embodiment of the present invention and the software operated by the processor of the user apparatus 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read, respectively. It may be stored in a dedicated memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

Further, the notification of information is not limited to the mode / embodiment described in the present disclosure, and may be performed by using another method. For example, information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. Broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof may be used. RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.

Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication). system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), IEEE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize suitable systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).

The order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.

In some cases, the specific operation performed by the base station apparatus 10 in the present specification may be performed by its upper node (upper node). In a network consisting of one or more network nodes having a base station device 10, various operations performed for communication with the user device 20 are other than the base station device 10 and the base station device 10. It is clear that this can be done by at least one of the network nodes (eg, MME or S-GW, etc., but not limited to these). In the above, the case where there is one network node other than the base station apparatus 10 has been illustrated, but the other network nodes may be a combination of a plurality of other network nodes (for example, MME and S-GW). Good.

The information, signals, etc. described in the present disclosure can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information and the like may be saved in a specific location (for example, memory), or may be managed using a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

The determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example). , Comparison with a predetermined value).

Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc. should be broadly interpreted to mean.

In addition, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, a website that uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

Note that the terms explained in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Also, the signal may be a message. Further, the component carrier (CC: Component Carrier) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.

The terms "system" and "network" used in this disclosure are used interchangeably.

Further, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented. For example, the radio resource may be one indicated by an index.

The names used for the above parameters are not limited in any respect. Further, mathematical formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect limited names. is not.

In this disclosure, "base station (BS: Base Station)", "wireless base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB" (GNB) ”,“ access point ”,“ transmission point ”,“ reception point ”,“ transmission / reception point (transmission / reception point) ”,“ cell ”,“ sector ”, Terms such as "cell group," "carrier," and "component carrier" can be used interchangeably. Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.

The base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)). Communication services can also be provided by Remote Radio Head). The term "cell" or "sector" refers to part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage. Point to.

In the present disclosure, terms such as "mobile station (MS: Mobile Station)", "user terminal", "user device (UE: User Equipment)", and "terminal" may be used interchangeably. ..

Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be. It should be noted that at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

Further, the base station in the present disclosure may be read by the user terminal. For example, the communication between the base station and the user terminal is replaced with the communication between a plurality of user devices 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). Each aspect / embodiment of the present disclosure may be applied to the configuration. In this case, the user device 20 may have the functions of the base station device 10 described above. In addition, words such as "up" and "down" may be read as words corresponding to communication between terminals (for example, "side"). For example, the uplink, downlink, and the like may be read as side channels.

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

The terms "determining" and "determining" used in this disclosure may include a wide variety of actions. "Judgment" and "decision" are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as "judgment" or "decision". Also, "judgment" and "decision" are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" mean that "resolving", "selecting", "choosing", "establishing", "comparing", etc. are regarded as "judgment" and "decision". Can include. That is, "judgment" and "decision" may include that some action is regarded as "judgment" and "decision". Further, "judgment (decision)" may be read as "assuming", "expecting", "considering" and the like.

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access". As used in the present disclosure, the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be "connected" or "coupled" to each other using electromagnetic energies having wavelengths in the microwave and light (both visible and invisible) regions.

The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applicable standard.

The phrase "based on" as used in this disclosure does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

Any reference to elements using designations such as "first", "second", etc. as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.

The "means" in the configuration of each of the above devices may be replaced with "part", "circuit", "device" and the like.

When "include", "including" and variations thereof are used in the present disclosure, these terms are as comprehensive as the term "comprising". Is intended. Furthermore, the term "or" used in the present disclosure is intended not to be an exclusive OR.

The wireless frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain. The subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.

The numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. Numerology includes, for example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, wireless frame configuration, transmitter / receiver. At least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.

The slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain. Slots may be time units based on new melody.

The slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. Further, the mini slot may be called a sub slot. A minislot may consist of a smaller number of symbols than the slot. A PDSCH (or PUSCH) transmitted in a time unit larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.

The wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal. The radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.

For example, one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI. You may. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. It may be. The unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.

Here, TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, the base station schedules each user device 20 to allocate radio resources (frequency bandwidth that can be used in each user device 20, transmission power, etc.) in TTI units. The definition of TTI is not limited to this.

The TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation. When a TTI is given, the time interval (for example, the number of symbols) to which the transport block, code block, code word, etc. are actually mapped may be shorter than the TTI.

When one slot or one mini slot is called TTI, one or more TTIs (that is, one or more slots or one or more mini slots) may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.

A TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like. TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.

The long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.

The resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain. The number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers contained in the RB may be determined based on numerology.

Further, the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI. Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.

In addition, one or more RBs include a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.

Further, the resource block may be composed of one or a plurality of resource elements (RE: Resource Element). For example, 1RE may be a radio resource area of 1 subcarrier and 1 symbol.

Bandwidth part (BWP: Bandwidth Part) (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a certain neurology in a carrier. Here, the common RB may be specified by an index of the RB with respect to the common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be set in one carrier for the UE.

At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP. In addition, "cell", "carrier" and the like in this disclosure may be read as "BWP".

The above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples. For example, the number of subframes contained in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB. The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP: Cyclic Prefix) length, and other configurations can be changed in various ways.

In the present disclosure, if articles are added by translation, for example, a, an and the in English, the disclosure may include that the nouns following these articles are plural.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other". The term may mean that "A and B are different from C". Terms such as "separate" and "combined" may be interpreted in the same way as "different".

Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched with execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit notification, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.

In this disclosure, the transmitting unit 210 and the receiving unit 220 are examples of communication units. The transmission unit 110 and the reception unit 120 are examples of communication units. The "InDeviceCoexIndication" message is an example of a notification for suppressing in-device interference. “TxDirectcurentLocation” is an example of information indicating the carrier frequency of BWP (Bandwidth Part).

Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure may be implemented as an amendment or modification without departing from the purpose and scope of the present disclosure, which is determined by the description of the scope of claims. Therefore, the description of the present disclosure is for the purpose of exemplary explanation and does not have any restrictive meaning to the present disclosure.

10 Base station device 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 User device 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims

A receiver that receives settings related to notifications for suppressing in-device interference in an NR (New Radio) system from a base station device, and a receiver.
When in-device interference with another system due to uplink carrier aggregation is detected, the BWP (Bandwidth Part) of one or more uplinks constituting the uplink carrier aggregation is notified in order to suppress the in-device interference. A control unit that includes information indicating the carrier frequency for each
A user device having a transmission unit that transmits a notification for suppressing interference in the device to the base station device.
The user device according to claim 1, wherein the control unit further includes information indicating a carrier frequency for each uplink BWP constituting the uplink carrier aggregation in the notification for suppressing interference in the device for each cell. ..
The first aspect of claim 1, wherein when the control unit detects in-device interference with the downlink carrier, the notification for suppressing the in-device interference includes information indicating that the downlink carrier is a measurement target. User device.
A transmitter that transmits settings related to notifications for suppressing in-device interference in an NR (New Radio) system to a user device, and a transmitter.
Information indicating the carrier frequency of each BWP (Bandwidth Part) of one or more uplinks constituting the uplink carrier aggregation when in-device interference with another system due to the uplink carrier aggregation is detected in the user device. A receiver that receives a notification from the user device for suppressing interference in the device, including
A base station device having a control unit that executes communication control for suppressing in-device interference based on the notification for suppressing in-device interference.