WO2021230659A1

WO2021230659A1 - Method and apparatus for supporting multi-subscriber identity module

Info

Publication number: WO2021230659A1
Application number: PCT/KR2021/005967
Authority: WO
Inventors: 오진영; 김태형; 노훈동; 지형주
Original assignee: 삼성전자 주식회사
Priority date: 2020-05-15
Filing date: 2021-05-12
Publication date: 2021-11-18

Abstract

A method of a terminal supporting a dual subscriber identity module (dual-SIM) in a wireless communication system, according to various embodiments of the present disclosure, is characterized by a step for receiving, from a first base station, first configuration information related to discontinuous reception (DRX) of a first SIM, by using the first SIM, a step for identifying configuration related to DRX of a second SIM, on the basis of the first configuration information, a step for transmitting, to a second base station, UE assistance information including the configuration related to the DRX of the second SIM, by using the second SIM, and performing communication with the first base station and the second base station, by using the first SIM and the second SIM, on the basis of the first configuration information and the configuration related to the DRX of the second SIM. Various other embodiments may be possible.

Description

Method and apparatus for supporting multiple subscriber identification modules

The present disclosure relates to a method and apparatus for supporting a multi-subscriber identification module (Multi-SIM) in a wireless communication system.

Efforts are being made to develop an improved 5G (5th-Generation) communication system or pre-5G communication system in order to meet the increasing demand for wireless data traffic after commercialization of the 4G (4th-Generation) communication system. For this reason, the 5G communication system or the pre-5G communication system is called a system after the 4G network (beyond 4G network) or the LTE system (post LTE).

In order to achieve a high data rate, the 5G communication system is being considered for implementation in a very high frequency (mmWave) band (eg, such as a 60 gigabyte (60 GHz) band). In order to mitigate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, in the 5G communication system, beamforming, massive MIMO, and full dimensional MIMO (FD-MIMO) , array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

In addition, for network improvement of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud radio access network: cloud RAN), an ultra-dense network (ultra-dense network) , device to device communication (D2D), wireless backhaul, moving network, cooperative communication, coordinated multi-points (CoMP), and interference cancellation Technology development is underway.

In addition, in the 5G system, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC), which are advanced coding modulation (ACM) methods, and FBMC (filter bank multi carrier), NOMA, which are advanced access technologies, (non-orthogonal multiple access), and sparse code multiple access (SCMA) are being developed.

On the other hand, the Internet is evolving from a human-centered connection network where humans create and consume information to an Internet of Things (IoT) network that exchanges and processes information between distributed components such as objects. Internet of Everything (IoE) technology, which combines big data processing technology through connection with cloud servers, etc. with IoT technology, is also emerging. In order to implement IoT, technology elements such as sensing technology, wired and wireless communication and network infrastructure, service interface technology, and security technology are required. , M2M), and MTC (Machine Type Communication) are being studied. In the IoT environment, an intelligent IT (Internet Technology) service that collects and analyzes data generated from connected objects and creates new values in human life can be provided. IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliance, advanced medical service, etc. can be applied to

Accordingly, various attempts are being made to apply the 5G communication system to the IoT network. For example, 5G communication such as sensor network, machine to machine (M2M), and machine type communication (MTC) is being implemented by techniques such as beamforming, MIMO, and array antenna. The application of a cloud radio access network (cloud RAN) as the big data processing technology described above is an example of the convergence of 5G technology and IoT technology.

As the number of global mobile subscriptions increases, the degree of availability of mobile communication between countries is distributed differently based on geographic constraints. For example, in India and China, it is impossible to provide seamless connectivity across the country using a single service provider. Thus, in India and China, roaming to another network is required to maintain a communication connection. However, consumers do not want to incur high charges due to roaming. Therefore, interest in devices using a multiple subscriber identification module (Dual-SIM) is gradually increasing, especially in India and China.

One aspect of the present disclosure is to provide a method and apparatus for supporting a dual subscriber identification module (Dual sim) in a wireless communication system.

One aspect of the present disclosure is to provide a method and apparatus for enabling a terminal to efficiently communicate with a base station by using DRX configuration information of a dual subscriber identification module in a wireless communication system.

A method of a terminal supporting a Dual Subscriber Identity Module (Dual-SIM) in a wireless communication system according to various embodiments of the present disclosure is a method of a terminal using a first SIM from a first base station, DRX of the first SIM A process of receiving first configuration information related to (discontinuous reception), a process of identifying a configuration related to DRX of the second SIM based on the first configuration information, and a process of using the second SIM, the second SIM A process of transmitting UE assistance information including DRX-related configuration of , characterized in that to perform communication with the first base station and the second base station. In addition, various embodiments may be possible.

According to various embodiments of the present disclosure, a terminal may efficiently communicate with a plurality of base stations using a dual subscriber identification module.

According to various embodiments of the present disclosure, the terminal can efficiently communicate with the base station by using the DRX configuration information of the dual subscriber identification module.

Effects obtainable in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present disclosure belongs from the description below. will be.

1 is a block diagram of an electronic device according to various embodiments of the present disclosure;

2 is a block diagram illustrating a wireless communication system according to various embodiments of the present disclosure.

3 is a diagram illustrating an example of a discontinuous reception (DRX) operation in a wireless communication system according to various embodiments of the present disclosure.

4A and 4B are flowcharts of a method of supporting a dual subscriber identification module according to various embodiments of the present disclosure;

5 is a diagram illustrating a method of configuring DRX of a dual subscriber identification module according to various embodiments of the present disclosure.

6 is a diagram schematically illustrating a structure of a terminal according to various embodiments of the present disclosure.

7 is a diagram schematically illustrating a structure of a base station according to various embodiments of the present disclosure.

1 is a block diagram of an electronic device in a network environment, according to various embodiments of the present disclosure;

Referring to FIG. 1 , in a network environment 100 , the electronic device 101 communicates with the electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 . In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, the program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor), or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) that can operate independently or together with the main processor 121 . (NPU: neural processing unit), image signal processor, sensor hub processor, or communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 uses less power than the main processor 121 or is set to be specialized for a specified function. can be The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The auxiliary processor 123 may be, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the coprocessor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190). have. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176 ) of the electronic device 101 . The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .

The input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output a sound signal to the outside of the electronic device 101 . The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 or an external electronic device (eg, a sound output module 155 ) directly or wirelessly connected to the electronic device 101 . The electronic device 102) (eg, a speaker or headphones) may output a sound.

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more specified protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with an external electronic device through a cellular network, a 5G network, a next-generation communication network, the Internet, or a telecommunication network such as a computer network (eg, LAN or WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology is a high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 192 uses various techniques for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) may be supported.

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving a signal of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( e.g. commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external

electronic devices

102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or part of the operations executed in the electronic device 101 may be executed in one or more of the external

electronic devices

102 , 104 , or 108 . For example, when the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. The server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

It should be understood that the various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A , B, or C," each of which may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as “first”, “second”, or “first” or “second” may simply be used to distinguish the component from other such components, and refer to those components in other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is "coupled" or "connected" to another (eg, second) component, with or without the terms "functionally" or "communicatively". When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit. can be used as A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). may be implemented as software (eg, the program 140) including For example, the processor (eg, the processor 120 ) of the device (eg, the electronic device 101 ) may call at least one of one or more instructions stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function in accordance with the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is different from the case where data is semi-permanently stored in the storage medium. It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store ^TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. , or one or more other operations may be added.

2 is a block diagram illustrating a wireless communication system according to various embodiments of the present disclosure. Referring to FIG. 2 , the wireless communication system 20 may include a terminal 200 , a first network 210 , and a second network 220 .

A user equipment (UE) 200 is a wireless communication device, which may be fixed or mobile, and refers to any device capable of wirelessly communicating with the

base station

211 or 221 to transmit and receive data and/or control information. can do. For example, the terminal 200 is a terminal, terminal equipment, MS (Mobile Station), MT (Mobile Terminal), UT (User Terminal), SS (Subscribe Station), wireless device (wireless device), portable It may be referred to as a handheld device or the like. As shown in FIG. 2 , the terminal 200 includes an antenna array 210 , an RFIC 202 , a Multi-SIM (MS) device (hereinafter, may be referred to as an MS device) 230 and It may include

m SIMs

204, 205, 206, etc. (m being an integer greater than 1).

A base station (eg, 211 or 221 ) may refer to a fixed station that communicates with the terminal 200 and/or other base stations, and communicates with the terminal 200 and/or other base stations to obtain data and control information. can be exchanged for For example, the base station is a Node B, an evolved Node B (eNB), a next generation Node B (gNB), a sector, a site, a base transceiver system (BTS), an access point (AP), a relay node ( Relay Node), RRH (Remote Radio Head), RU (Radio Unit), may also be referred to as a small cell (small cell). In this specification, a base station or cell is a generic term representing some area or function covered by a Base Station Controller (BSC) in CDMA, Node-B in WCDMA, eNB in LTE, gNB or sector (site) in 5G NR, etc. It can be interpreted as meaning, and it can cover various coverage areas such as megacells, macrocells, microcells, picocells, femtocells and relay nodes, RRHs, RUs, and small cell communication ranges.

2 , the first base station 211 may be included in the first network 210 , and the second base station 221 may be included in the second network 220 . The terminal 100 may access the first network 210 through the first base station 211 while accessing the second network 220 through the second base station 221 . The first base station 211 and the second base station 221 may be a plurality of base stations constituting Multi-RAT Dual Connectivity (MR-DC) in the 5G system. The terminal 200 may communicate with the first network 210 and the second network 220 according to an arbitrary radio access technology (RAT). For example, the terminal 200 is a non-limiting example of a 5G (5th Generator) system, 5G NR (5G New Radio) system, LTE (Long Term Evolution) system, CDMA (Code Division Multiple Access) system, GSM ( It may communicate with the first network 210 and the second network 220 according to a Global System for Mobile Communications) system, a Wireless Local Area Network (WLAN) system, or any other RAT. The terminal 200 may communicate with the first network 210 and the second network 220 according to the same RAT in some embodiments, and in some embodiments the first network 210 and the second network 220 according to a different RAT. It may communicate with the second network 220 .

The terminal 200 may support multi-SIM (MS) wireless communication. For example, as shown in FIG. 1 , the terminal 200 performs the first wireless communication 21 in which the first base station 211 and the first SIM 204 included in the first network 210 are related. and the second base station 221 and the second SIM 205 included in the second network 220 may perform the related second wireless communication 22 . For example, when performing two wireless communications related to two

SIMs

204 and 205 , the terminal 200 may be referred to as a dual SIM (Dual SIM) device. The first wireless communication 21 and the second wireless communication 22 may be referred to as a first connection and a second connection, and may also be referred to as a first subscription and a second subscription. In addition, exemplary embodiments of the present disclosure will be described mainly with reference to two

SIMs

204 , 205 as shown in FIG. 1 , namely dual SIM wireless communication, but three exemplary embodiments of the present disclosure It will be appreciated that it is also applicable to multi-SIM wireless communication using more than two SIMs.

In some embodiments, the terminal 200 may support a multi-subscriber identification module (Multi-SIM), and there may be a plurality of types of the terminal 200 capable of supporting the multi-subscriber identification module (Multi-SIM). . For example, a multi-standby mode and a multi-active mode may exist in the type of the terminal. The multiple standby mode may be referred to as dual-sim dual standby (DSDS), in which the dual SIM may share a single baseband modem and a radio frequency (RF) transceiver.

The multiple active mode may be referred to as Dual-Sim Dual Active (DSDA), where dual-SIM uses a baseband modem and RF transceiver for each subscriber identification module individually.

Since DSDS devices share a single baseband and RF transceiver, they are the most cost-effective and correspond to dual-SIM terminals widely used in the market. However, there may be cases in which dual SIMs want to use a single RF transceiver at the same time in a wireless communication system. Accordingly, the present disclosure proposes a method and apparatus in which dual SIMs can share a single RF transceiver without collision in such a case.

For example, if the dual subscriber identification modules operating in the existing communication method are referred to as SIM-1 and SIM-2, a terminal communicating with SIM-1 may be required to monitor paging from SIM-2. In general, since the priority of paging is high, in this case, RF resources are allocated to SIM-2, and communication with SIM-1 of the terminal is terminated. Accordingly, the terminal decides to terminate communication with SIM-1. However, since the SIM-1 does not recognize the communication termination decision in the terminal, the SIM-1 continues to transmit data to the terminal. This situation causes a waste of resources until the SIM-1 recognizes the end of communication with the terminal. Therefore, it is necessary to distribute RF resources to share the RF transceiver between dual SIMs without degrading network performance. The present disclosure proposes a method of sharing an RF transceiver without collision between dual SIMs by using discontinuous reception (DRX) and UE assistance information. Referring to the 3GPP standard TS 38.331, the UE assistance information transmitted from the terminal to the network may include information related to the DRX configuration of the terminal. In the present disclosure, the UE assistance information may include DRX related information for dual SIM operation as information related to DRX configuration of the UE. In the present disclosure, although the terminal 200 may support multiple SIMs, it is assumed that dual SIMs are supported for convenience of description.

3 is a diagram illustrating an example of a DRX operation in a wireless communication system according to an embodiment of the present disclosure.

Discontinuous Reception (DRX) is an operation in which a terminal using a service discontinuously receives data in an RRC connected state in which a radio link is established between a base station and a terminal. This DRX operation is also referred to as a DRX operation (ie, C-DRX) in the RRC connection state. When DRX is applied, the terminal turns on the receiver at a specific point in time to monitor the control channel, and if there is no data received for a certain period of time, turns off the receiver to reduce power consumption of the terminal. DRX operation may be controlled by the MAC layer device based on various parameters and timers.

Referring to FIG. 3 , an active time 305 is a time during which the UE wakes up every DRX cycle and monitors the PDCCH. Active time 305 may be defined as follows.

- drx-onDurationTimer or drx-InactivityTimer or drx-RetransmissionTimerDL or drx-RetransmissionTimerUL or ra-ContentionResolutionTimer is running; or

- Scheduling request is transmitted or pending through Physical Uplink Control Channel (PUCCH); or

- Cell-Radio Network Temporary Identifier (C-RNTI) of the entity after successful reception of a random access response for a random access preamble not selected from Medium Access Control (MAC) during contention-based random access preamble A Physical Downlink Control Channel (PDCCH) indicating a new transmission is not received.

The drx-onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimerDL, drx-RetransmissionTimerUL, ra-ContentionResolutionTimer, etc. are timers whose values are set by the base station, and a function of setting the terminal to monitor the PDCCH when a predetermined condition is satisfied. has a

The drx-onDurationTimer 315 is a parameter for setting the minimum time that the terminal is awake in the DRX cycle. The drx-InactivityTimer 320 is a parameter for setting an additional awake time of the terminal when receiving 330 a PDCCH indicating new uplink transmission or downlink transmission. drx-RetransmissionTimerDL is a parameter for setting the maximum time that the terminal is awake in order to receive downlink retransmission in the downlink Hybrid Automatic Repeat Request (HARQ) procedure. The drx-RetransmissionTimerUL is a parameter for setting the maximum time that the terminal is awake in order to receive an uplink retransmission grant (grant) in the uplink HARQ procedure. drx-onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimerDL and drx-RetransmissionTimerUL may be set to, for example, time, the number of subframes, the number of slots, and the like. ra-ContentionResolutionTimer is a parameter for monitoring the PDCCH in the random access procedure.

The inActive time 310 is a time set not to monitor the PDCCH or/or a time set not to receive the PDCCH during DRX operation. (310) can be. If the UE does not monitor the PDCCH during the active time 305, the UE may enter a sleep or inActive state to reduce power consumption.

The DRX cycle means a cycle in which the UE wakes up and monitors the PDCCH. That is, after the UE monitors a PDCCH, it means a time interval or an on-duration generation period until monitoring the next PDCCH. There are two types of DRX cycle: short DRX cycle and long DRX cycle. Short DRX cycle may be optionally applied.

The Long DRX cycle 325 is the longest of the two DRX cycles set in the terminal. The UE starts the drx-onDurationTimer (315) again when the Long DRX cycle (325) has elapsed from the starting point (eg, start symbol) of the drx-onDurationTimer (315) while operating in Long DRX. When operating in the Long DRX cycle 325, the UE may start the drx-onDurationTimer 315 in the slot after the drx-SlotOffset in the subframe satisfying Equation 1 below. Here, drx-SlotOffset means a delay before starting the drx-onDurationTimer 315 . drx-SlotOffset may be set to time, number of slots, etc. as shown in [Equation 1] below, for example.

Here, drx-LongCycleStartOffset may be used to define a subframe in which the Long DRX cycle 325 and drx-StartOffset will start the Long DRX cycle 325 . drx-LongCycleStartOffset may be set to, for example, time, number of subframes, number of slots, and the like.

4A and 4B are flowcharts illustrating a method of supporting a dual subscriber identification module for preventing collision, according to various embodiments of the present disclosure; In the embodiment of FIG. 4A , the terminal 200 provides first DRX configuration information and second DRX related to SIM-1 204 and SIM-2 205 from the first base station 211 and the second base station 221, respectively. It is assumed that the setting information is received (step 401). The first DRX configuration information and the second DRX configuration information may include the DRX parameter of FIG. 3 (eg, drx-onDurationTimer 315, etc.).

Referring to FIG. 4A , in step 401 , the terminal 200 identifies DRX configuration information (eg, the above-described DRX cycle, timer information, offset information, etc.) related to the SIM-1 204 . According to one embodiment, the dual subscriber identification module of the DSDS device cannot be connected to the network at the same time. When the terminal 200 is connected to the second base station 221 through the SIM-2 205 and performs communication, the terminal 200 communicates with the first base station 211 through the SIM-1 204 . It can be difficult to do. When the terminal 200 does not communicate with the first base station 211 through the SIM-1 204 , the terminal 200 may use DRX to reduce power consumption. The terminal 200 is required to monitor paging for the number of pagings once per paging cycle. The number of paging may be determined based on, for example, the first DRX configuration information provided by the first base station 211 and a predetermined formula. The terminal 200 may monitor the paging to identify the first DRX configuration information of the SIM-1 204 .

In step 403 , the terminal 200 determines the active time of the SIM-1 204 according to the identified first DRX configuration information and the SIM-2 205 according to the second DRX configuration information received from the second base station 221 . Determines whether the active time of According to an embodiment, the terminal 200 may identify the active time of the SIM-1 204 by identifying the first DRX configuration information, and the active time of the identified SIM-1 204 is the second DRX It can be determined whether the active time of the SIM-2 (205) overlaps with the configuration information. A detailed embodiment will be described later in detail with reference to FIG. 5 .

In step 404, when there is overlap between the active time according to the DRX configuration of the SIM-1 204 and the active time according to the DRX configuration of the SIM-2 205, the terminal 200 sets the RX configuration of the SIM-1 204 based on the SIM-2 (205) determines the active time according to the preferred DRX configuration. In step 405 , the terminal 200 transmits UE assistance information including the preferred DRX configuration of the SIM-2 205 to the second base station 221 . The terminal 200 uses the SIM-1 204 and the SIM-2 205 based on the first DRX configuration information and the preferred DRX configuration information of the SIM-2 205 to the first base station 211 and the second It is possible to perform communication with each of the 2 base stations 221 .

Referring to FIG. 4B , in step 408 , the second base station 221 does not overlap with the DRX setting of the SIM-1 204 from the terminal 200 using the SIM-1 204 and the SIM-2 205 . UE assistance information including preferred DRX configuration of SIM-2 205 is received.

In step 409 , the second base station 221 may communicate with the terminal using the preferred DRX configuration of the SIM-2 205 based on the received UE assistance information.

According to an embodiment of the present disclosure, the second base station 221 may configure the second DRX configuration information of the SIM-2 205 based on the UE assistance information. The second base station 221 transmits the second DRX configuration information of the SIM-2 205 to the terminal 220 for higher layer signaling information (eg, a radio resource control (RRC) message) or L1 (Layer 1) signaling information (one For example, it may be transmitted through downlink control information (DCI) The terminal 200 uses the SIM-1 204 and the SIM-2 205 based on the first DRX configuration information and the second DRX configuration information. Communication with the first base station 211 and the second base station 221 may be performed, respectively.

According to an optional embodiment of the present disclosure, the second base station 221 transmits an acknowledgment message to the terminal 200 in response to the UE assistance information received from the terminal 200, and the terminal 200 Communication with the first base station 211 and the second base station 221 using the SIM-1 204 and the SIM-2 205 based on the first DRX configuration information and the preferred DRX configuration information of the SIM-2, respectively can be performed.

5 is a diagram for describing a method of setting DRX configuration information of a dual SIM according to various embodiments of the present disclosure.

Referring to FIG. 5 , the first DRX configuration information 501 of the SIM-1 204 , the second DRX configuration information 502 of the SIM-2 205 , and the SIM-2 205 of the terminal 200 are The SIM-2 205 DRX configuration information 504 identified by the second network 220 based on the preferred DRX configuration information 503 and the UE assistance information is shown.

First, the first DRX configuration information 501 of the SIM-1 204 may be information identified while the terminal 200 identifies the configuration information of the SIM-1 204 in step 401 of FIG. 4 . According to an embodiment, the SIM-1 204 may be active time from time t1 to time t2. Active time may include, for example, a reception possible state or ON duration. SIM-1 204 may be inactive time from time t2 to time t3. The inactive time may include, for example, a no reception state or an OFF duration. The first DRX configuration information of the SIM-1 204 may set T1 as a period to repeat active time and inactive time.

According to an embodiment, the second DRX configuration information 502 of the SIM-2 205 may be identified from the SIM-2 205 configuration information previously received by the terminal 200 from the second base station 221 . . According to an embodiment, the SIM-2 205 may be active time from time t4 to time t5. The SIM-2 205 may be inactive time from time t5 to time t6. The second DRX configuration information of the SIM-2 205 may set T2 as a period to repeat active time and inactive time. According to an embodiment, the time of T2 may be the same as or different from that of T1. Referring to 501 and 502, the active time of the SIM-1 204 and the active time of the SIM-2 205 may overlap from time t4 to time t2. At the active time of the SIM-1 (141), the terminal 200 receives data from the first base station 211 through the SIM-1 (204), so during the active time of the SIM-1 (204), the SIM-2 Data cannot be received from the second base station 221 through 205 . From time t4 to time t2 among the points of time t4 to t5, which are the active time points of the SIM-2 (205), the SIM-1 (204) is also an active time point, so the RF resource allocated to the SIM-2 (205) is wasted. can be In order to minimize wasted RF resources, the terminal 220 may identify configuration information (eg, a paging cycle) related to preferred DRX of the SIM-2 205 .

According to an embodiment, the configuration information 503 related to preferred DRX of the SIM-2 142 of the terminal 200 includes configuration information related to the first DRX of the SIM-1 205 identified by the terminal 220 ( 501) can be identified. According to an embodiment, the terminal 200 may set the active time of the SIM-2 205 to the active time from time t2 to time t3 so as not to overlap the active time of the SIM-1 204 . The terminal 220 may set the preferred DRX configuration information of the SIM-2 142 to a period of time T3, and T3 may be, for example, the same as or different from T1 or T2. According to an embodiment, the terminal 200 may transmit UE assistance information including the preferred DRX configuration information 503 of the SIM-2 205 to the second base station 221 .

According to an embodiment, after the second base station 221 receives the preferred DRX configuration information 503 of the SIM-2 205 from the terminal 200 , the preferred DRX configuration of the SIM-2 205 . Based on the information 503 , the second DRX configuration information 504 of the SIM-2 205 may be set. Referring to 504 of FIG. 5 , the second base station 221 may set the active time of the SIM-2 205 from time t7 to time t8 so that the active time of the SIM-1 204 does not overlap. . According to an embodiment, the second base station 221 sets the inactive time of the SIM-2 205 from time t8 to time t9, so that the active state of the SIM-1 204 and the active state of the SIM-2 205 are set. It can be set so that the state does not overlap.

According to an embodiment, the second base station 221 transmits the second DRX configuration information 504 of the SIM-2 205 set by the second base station 221 to the terminal 200, and the SIM-2 ( 205), in case of active time based on the paging cycle, data may be transmitted.

6 is a diagram schematically illustrating an internal structure of the terminal 200 according to an embodiment of the present disclosure.

Referring to FIG. 6 , the terminal 200 includes a controller 610 , a receiver 620 , and a transmitter 630 . Also, the terminal 200 may be implemented by including a processor for controlling configuration information related to DRX of the SIM-1 141 and the SIM-2 142 . In addition, the terminal 200 may be implemented by including the function of the terminal 200 in a server.

The controller 610 controls the overall operation of the terminal 200, and in particular, controls configuration information related to DRX of the SIM-1 141 and the SIM-2 142 to perform an operation related to control. Since the operation of the controller 610 to control the terminal 200 is the same as described with reference to FIGS. 2 to 5 , a detailed description thereof will be omitted herein.

The receiver 620 receives various messages and information under the control of the controller 610 .

The transmitter 630 transmits various messages and information under the control of the controller 610 .

In FIG. 6 , in the terminal 200 , the controller 610 , the receiver 620 and the transmitter 630 are implemented as separate units, but at least two of the controller 610 , the receiver 620 and the transmitter 630 . Dogs can be integrated into one. Also, the controller 610 , the receiver 620 , and the transmitter 630 may be implemented with at least one processor.

7 is a diagram schematically illustrating internal structures of a first base station and a

second base station

211 and 221 according to an embodiment of the present disclosure.

Referring to FIG. 7 , the first and

second base stations

211 and 221 include a controller 610 , a receiver 620 , and a transmitter 630 . In addition, the first base station and the

second base station

211 and 221 may be implemented by including a processor for controlling configuration information related to DRX of the SIM-1 141 and the SIM-2 142 . Also, the first base station and the

second base station

211 and 221 may be implemented by including the function of the terminal 200 in a server.

The controller 610 controls the overall operation of the terminal 200, and in particular, controls configuration information related to DRX of the SIM-1 141 and the SIM-2 142 to perform an operation related to control. Since the operation of the controller 610 to control the first and

second base stations

211 and 221 is the same as described with reference to FIGS. 2 to 5 , a detailed description thereof will be omitted herein.

In FIG. 6 , the controller 610, the receiver 620, and the transmitter 630 are implemented as separate units in the first base station and the

second base station

211 and 221, but the controller 610 and the receiver 620 are separate units. and at least two of the transmitters 630 may be integrated into one. Also, the controller 610 , the receiver 620 , and the transmitter 630 may be implemented with at least one processor.

According to an embodiment of the present disclosure, a terminal supporting a dual subscriber identity module (Dual-SIM) in a wireless communication system uses a first SIM from a transceiver and a first base station, using a first SIM controlling the transceiver to receive first configuration information related to discontinuous reception (DRX) of control the transceiver to transmit UE assistance information including the DRX-related configuration of the second SIM to the base station, and based on the first configuration information and the DRX-related configuration information of the second SIM, the first SIM and the second SIM and a controller configured to communicate with the first base station and the second base station by using the second SIM.

According to an embodiment of the present disclosure, the controller controls the transceiver so that the terminal transmits the UE assistance information to the second base station, and then receives an acknowledgment message from the second base station in response to the UE assistance information. It may be characterized in that controlling the transceiver to receive the.

According to an embodiment of the present disclosure, the DRX-related configuration of the first configuration information and the second SIM may include at least one of DRX offset information, DRX cycle information, and DRX timer information.

According to an embodiment of the present disclosure, the controller controls the first SIM and the second SIM to share the transceiver, and uses the first SIM and the second SIM to provide the first base station and the second SIM. It may be characterized in that the control to perform communication with the base station.

According to an embodiment of the present disclosure, a base station supporting a Dual Subscriber Identity Module (Dual-SIM) in a wireless communication system provides UE assistance including configuration related to DRX of a first SIM from a transceiver and a terminal. control the transceiver to receive information, control the transceiver to transmit a response message to the terminal in response to the UE assistance information, and communicate with the terminal using the first SIM based on the response message It may include a control unit that

According to an embodiment of the present disclosure, the response message may be characterized as an acknowledgment message for the UE assistance information.

According to an embodiment of the present disclosure, the response message includes configuration information including DRX-related configuration information of a first SIM, and the controller communicates with the terminal using the first SIM based on the configuration information can be controlled to do

Claims

A method of a terminal supporting a dual subscriber identity module (Dual-SIM) in a wireless communication system, the method comprising:

receiving, from a first base station, first configuration information related to discontinuous reception (DRX) of the first SIM by using the first SIM;

identifying a DRX-related configuration of the second SIM based on the first configuration information;

transmitting UE assistance information including configuration related to DRX of the second SIM to a second base station by using the second SIM; and

A method of a terminal for performing communication with the first base station and the second base station using the first SIM and the second SIM based on the first configuration information and the DRX-related configuration of the second SIM.
According to claim 1,

The active time according to the DRX-related configuration of the second SIM does not overlap with the active time according to the first configuration information.
According to claim 1,

and receiving second configuration information related to DRX of a second SIM from the second base station in response to the UE assistance information.
4. The method of claim 3,

A method of a terminal for performing communication with the first base station and the second base station using the first SIM and the second SIM based on the first configuration information and the received second configuration information.
According to claim 1,

After the terminal transmits UE assistance information to the second base station,

and receiving an acknowledgment message from the second base station in response to UE assistance information.
According to claim 1,

The first configuration information and the DRX-related configuration of the second SIM include at least one of DRX offset information, DRX cycle information, and DRX timer information.
According to claim 1,

The terminal includes a single RF (radio frequency) transceiver,

The first SIM and the second SIM share the single RF transceiver, and perform communication with the first base station and the second base station.
A method of a base station supporting a dual subscriber identity module (Dual-SIM) in a wireless communication system, the method comprising:

receiving UE assistance information including configuration related to DRX of the first SIM from the terminal;

transmitting a response message to the terminal in response to the UE assistance information; and

A method of a base station for communicating with the terminal using the first SIM based on the response message.
9. The method of claim 8,

The method of the base station, characterized in that the response message is an acknowledgment (acknowledgement) message for the UE assistance information.
9. The method of claim 8,

The response message includes configuration information including DRX-related configuration information of the first SIM,

The base station performs communication with the terminal using the first SIM based on the configuration information.
In a terminal supporting a dual subscriber identity module (Dual-SIM) in a wireless communication system, the terminal comprising:

transceiver; and

Controls the transceiver to receive first configuration information related to discontinuous reception (DRX) of the first SIM from the first base station using the first SIM, and DRX of the second SIM based on the first configuration information and control the transceiver to transmit UE assistance information including the DRX-related configuration of the second SIM to the base station by using the second SIM, and the first configuration information and the second and a controller configured to communicate with the first base station and the second base station using the first SIM and the second SIM based on configuration information related to DRX of the SIM.
12. The method of claim 11,

The active time according to the DRX-related configuration of the second SIM does not overlap with the active time according to the first configuration information.
12. The method of claim 11,

wherein the controller controls the transceiver to receive second configuration information related to DRX of a second SIM from the second base station in response to the UE assistance information.
14. The method of claim 13,

The control unit performs communication with the first base station and the second base station using the first SIM and the second SIM based on the first configuration information and the received second configuration information. terminal.
A base station supporting a dual subscriber identity module (Dual-SIM) in a wireless communication system, the base station comprising:

transceiver; and

controlling the transceiver to receive the UE assistance information including the DRX-related configuration of the first SIM from the terminal, and controlling the transceiver to transmit a response message to the terminal in response to the UE assistance information, and the response message and a control unit configured to communicate with the terminal using the first SIM based on the .