Patent Application
20230309027
The present disclosure relates to mobile communication.
3rd generation partnership project (3GPP) long-term evolution (LTE) is a technology for enabling high-speed packet communications. Many schemes have been proposed for the LTE objective including those that aim to reduce user and provider costs, improve service quality, and expand and improve coverage and system capacity. The 3GPP LTE requires reduced cost per bit, increased service availability, flexible use of a frequency band, a simple structure, an open interface, and adequate power consumption of a terminal as an upper-level requirement.
Work has started in international telecommunication union (ITU) and 3GPP to develop requirements and specifications for new radio (NR) systems. 3GPP has to identify and develop the technology components needed for successfully standardizing the new RAT timely satisfying both the urgent market needs, and the more long-term requirements set forth by the ITU radio communication sector (ITU-R) international mobile telecommunications (IMT)-2020 process. Further, the NR should be able to use any spectrum band ranging at least up to 100 GHz that may be made available for wireless communications even in a more distant future.
The NR targets a single technical framework addressing all usage scenarios, requirements and deployment scenarios including enhanced mobile broadband (eMBB), massive machine-type-communications (mMTC), ultra-reliable and low latency communications (URLLC), etc. The NR shall be inherently forward compatible.
A mobile device should be configured to satisfy a reference sensitivity power level (REFSENS) which is the minimum average power for each antenna port of the mobile device when receiving the downlink signal.
When a harmonics component and/or an intermodulation distortion (IMD) component occurs, there is a possibility that the REFSENS for the downlink signal may not be satisfied due to the uplink signal transmitted by the mobile device.
When a harmonics component and/or an intermodulation distortion (IMD) component occurs, there is a possibility that the REFSENS for the downlink signal may not be satisfied due to the uplink signal transmitted by the mobile device.
Accordingly, a disclosure of the specification has been made in an effort to solve the aforementioned problem.
In accordance with an embodiment of the present disclosure, a disclosure of this specification provides A device configured to operate in a wireless system, the device comprising: a transceiver configured with a V2X (Vehicle to Everything), a processor operably connectable to the transceiver, wherein the processor is configured to: control the transceiver to transmit an uplink signal via operation band 20, control the transceiver to receive a sidelink signal vis operation band n38, wherein a value of Maximum Sensitivity Degradation (MSD) is applied to a reference sensitivity for receiving the sidelink signal, wherein based on bandwidth for receiving the sidelink signal being 10 MHz, the value of the MSD is 10.7 dB, wherein based on bandwidth for receiving the sidelink signal being 20 MHz, the value of the MSD is 7.7 dB, wherein based on bandwidth for receiving the sidelink signal being 30 MHz, the value of the MSD is 5.8 dB, wherein based on bandwidth for receiving the sidelink signal being 40 MHz, the value of the MSD is 4.7 dB.
The present disclosure can have various advantageous effects.
For example, by performing disclosure of this specification, UE can transmit signal by applying MSD value.
Effects obtained through specific examples of the present specification are not limited to the effects listed above. For example, there may be a variety of technical effects that a person having ordinary skill in the related art can understand or derive from this specification. Accordingly, the specific effects of the present disclosure are not limited to those explicitly described herein, but may include various effects that may be understood or derived from the technical features of the present disclosure.
The following techniques, apparatuses, and systems may be applied to a variety of wireless multiple access systems. Examples of the multiple access systems include a code division multiple access (CDMA) system, a frequency division multiple access (FDA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, a single carrier frequency division multiple access (SC-FDMA) system, and a multicarrier frequency division multiple access (MC-FDMA) system. CDMA may be embodied through radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA may be embodied through radio technology such as global system for mobile communications (GSM), general packet radio service (GPRS), or enhanced data rates for GSM evolution (EDGE), OFDMA may be embodied through radio technology such as institute of electrical and electronics engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, or evolved UTRA (E-UTRA). UTRA is a part of a universal mobile telecommunications system (UMTS). 3rd generation partnership project (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE employs OFDMA in DL and SC-FDMA in UL. Evolution of 3GPP LTE includes LTE-A (advanced), LTE-A Pro, and/or 5G NR (new radio).
For convenience of description, implementations of the present disclosure are mainly described in regards to a 3GPP based wireless communication system. However, the technical features of the present disclosure are not limited thereto. For example, although the following detailed description is given based on a mobile communication system corresponding to a 3GPP based wireless communication system, aspects of the present disclosure that are not limited to 3GPP based wireless communication system are applicable to other mobile communication systems.
For terms and technologies which are not specifically described among the terms of and technologies employed in the present disclosure, the wireless communication standard documents published before the present disclosure may be referenced.
In the present disclosure, “A or B” may mean “only A”, “only B”, or “both A and B”. In other words, “A or B” in the present disclosure may be interpreted as “A and/or B”. For example, “A, B or C” in the present disclosure may mean “only A”, “only B”, “only C”, or “any combination of A B and C”.
In the present disclosure, slash (/) or comma (,) may mean “and/or”. For example, “A/B” may mean “A and/or B”. Accordingly, “A/B” may mean “only A”, “only B”, or “both A and B”. For example, “ B, C” may mean “A, B or C”.
in the present disclosure, “at least one of A. and B” may mean “only A”, “only B” or “both A and B”. In addition, the expression “at least one of A or B” or “at least one of A and/or B” in the present disclosure may be interpreted as same as “at least one of A and B”.
In addition, in the present disclosure, “at least one of A, B and C” may mean “only A”, “only B”, “only C”, or “any combination of A, B and C”. In addition, “at least one of A, B or C” or “at least one of A, B and/or C” may mean “at least one of A, B and C”.
Also, parentheses used in the present disclosure may mean “for example”. In detail, when it is shown as “control information (PDCCH)”, “PDCCH” may be proposed as an example of “control information”. In other words, “control information” in the present disclosure is not limited to “PDCCH”, and “PDCCH” may be proposed as an example of “control information”. In addition, even when shown as “control information (i.e., PDCCH)”, “PDCCH” may be proposed as an example of “control information”
Technical features that are separately described in one drawing in the present disclosure may be implemented separately or simultaneously.
Although not limited thereto, various descriptions, functions, procedures, suggestions, methods and/or operational flowcharts of the present disclosure disclosed herein can be applied to various fields requiring wireless communication and/or connection (e.g., 5G) between devices.
Hereinafter, the present disclosure will be described in more detail with reference to drawings. The same reference numerals in the following drawings and/or descriptions may refer to the same and/or corresponding hardware blocks, software blocks, and/or functional blocks unless otherwise indicated.
The 5G usage scenarios shown in
Three main requirement categories for 5G include (1) a category of enhanced mobile broadband (eMBB), (2) a category of massive machine type communication (mMTC), and (3) a category of ultra-reliable and low latency communications (URLLC).
Referring to
The BSs 200 and the network 300 may be implemented as wireless devices and a specific wireless device may operate as a BS/network node with respect to other wireless devices.
The wireless devices 100a to 100f represent devices performing communication using radio access technology (RAT) (e.g., 5G new RAT (NR)) or LTE) and may be referred to as communication/radio/5G devices. The wireless devices 100a to 100f may include, without being limited to, a robot 100a, vehicles 100b-1 and 100b-2, an extended reality (XR) device 100c, a hand-held device 100d, a home appliance 100e, an IoT device 100f, and an artificial intelligence (AI) device/server 400. For example, the vehicles may include a vehicle having a wireless communication function, an autonomous driving vehicle, and a vehicle capable of performing communication between vehicles. The vehicles may include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device may include an AR/VR/Mixed Reality (MR) device and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) mounted in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc. The hand-held device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or a smartglasses), and a computer (e.g., a notebook). The home appliance may include a TV, a refrigerator, and a washing machine. The IoT device may include a sensor and a smartmeter.
In the present disclosure, the wireless devices 100a to 100f may be called user equipments (UEs). A UE may include, for example, a cellular phone, a smartphone, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate personal computer (PC), a tablet PC, an ultrabook, a vehicle, a vehicle having an autonomous traveling function, a connected car, an UAV, an AI module, a robot, an AR device, a VR device, an MR device, a hologram device, a public safety device, an MTC device, an IoT device, a medical device, a FinTech device (or a financial device), a security device, a weather/environment device, a device related to a 5G service, or a device related to a fourth industrial evolution field.
The wireless devices 100a to 100f may be connected to the network 300 via the BSs 200. An AI technology may be applied to the wireless devices 100a to 100f and the wireless devices 100a to 1100f may be connected to the AI server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, and a beyond-5G network. Although the wireless devices 100a to 100f may communicate with each other through the BSs 200/network 300, the wireless devices 100a to 100f may perform direct communication (sidelink communication) with each other without passing through the BSs 200/network 300. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V)/vehicle-to-everything (V2X) communication). The IoT device (e.g., a sensor) may perform direct communication with other loT devices (e.g., sensors) or other wireless devices 100a to 100f.
Wireless communication/connections 150a, 150b and 150c may be established between the wireless devices 100a to 1.00f and/or between wireless device 100a to 100f and BS 200 and/or between BSs 200. Herein, the wireless communication/connections may be established through various RATs (e.g., 5G NR) such as uplink/downlink communication 150a, sidelink communication (or device-to-device (D2D) communication) 150b, inter-base station communication 150c (e g., relay. integrated access and backhaul (IAB)), etc. The wireless devices 100a to 100f and the BSs 200/the wireless devices 100a to 100f may transmit/receive radio signals to/from each other through the wireless communication/connections 150a, 150b and 150c. For example, the wireless communication/connections 150a, 1501) and 150c may transmit/receive signals through various physical channels. To this end, at least a part of various configuration information configuring processes, various signal processing processes (e.g., channel encoding/decoding, modulation/demodulation, and resource mapping/de-mapping), and resource allocating processes, for transmitting/receiving radio signals, may be performed based on the various proposals of the present disclosure.
AI refers to the field of dying artificial intelligence or the methodology that can create it, and machine learning refers to the field of defining various problems addressed in the field of AI and the field of methodology to solve them. Machine learning is also defined as an algorithm that increases the performance of a task through steady experience on a task.
Robot means a machine that automatically processes or operates a given task by its own ability. In particular, robots with the ability to recognize the environment and make self-determination to perform actions can be called intelligent robots. Robots can be classified as industrial, medical, home, military, etc., depending on the: purpose or area of use. The robot can perform a variety of physical operations, such as moving the robot joints with actuators or motors. The movable robot also includes wheels, brakes, propellers, etc., on the drive, allowing it to drive on the ground or fly in the air.
Autonomous driving means a technology that drives on its own, and autonomous vehicles mean vehicles that drive without user's control or with minimal user's control. For example, autonomous driving may include maintaining lanes in motion, automatically adjusting speed such as adaptive cruise control, automatic driving along a set route, and automatically setting a route when a destination is set. The vehicle covers vehicles equipped with internal combustion engines, hybrid vehicles equipped with internal combustion engines and electric motors, and electric vehicles equipped with electric motors, and may include trains, motorcycles, etc., as well as cars. Autonomous vehicles can be seen as robots with autonomous driving functions,
Extended reality is collectively referred to as VR, AR, and MR. VR technology provides objects and backgrounds of real world only through computer graphic (CG) images. AR technology provides a virtual CG image on top of a real object image. MR technology is a CG technology that combines and combines virtual objects into the real world, MR technology is similar to AR technology in that they show real and virtual objects together. However, there is a difference in that in AR technology, virtual objects are used as complementary forms to real objects, while in MR technology, virtual objects and real objects are used as equal personalities.
NR supports multiples numerologies (and/or multiple subcarrier spacings (SCS)) to support various 5G services. For example, if SCS is 15 kHz, wide area can be supported in traditional cellular bands, and if SCS is 30 kHz/60 kHz, dense-urban, lower latency, and wider carrier bandwidth can be supported. If SCS is 60 kHz or higher, bandwidths greater than 24.25 GHz can be supported to overcome phase noise.
The NR frequency band may he defined as two types of frequency range, i.e., FR1 and FR2. The numerical value of the frequency range may be changed. For example, the frequency ranges of the two types (FR1 and FR2) may be as shown in Table 1 below. For ease of explanation, in the frequency ranges used in the NR system, FR1 may mean “sub 6 GHz range”, FR2 may mean “above 6 GHz range,” and may be referred to as millimeter wave (mmW).
As mentioned above, the numerical value of the frequency range of the NR system may be changed. For example, FR1 may include a frequency band of 410 MHz to 7125 MHz as shown in Table 2 below. That is, FRI may include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or more. For example, a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or more included in FR1 may include an unlicensed band. Unlicensed bands may be used for a variety of purposes, for example for communication for vehicles (e.g., autonomous driving).
Here, the radio communication technologies implemented in the wireless devices in the present disclosure may include narrowband internet-of-things (NB-IoT) technology for low-power communication as well as LTE, NR and 6G. For example, NB-IoT technology may be an example of low power wide area network (LPWAN) technology, may be implemented in specifications such as LTE Cat NB1 and/or LTE Cat NB2, and may not be limited to the above-mentioned names. Additionally and/or alternatively, the radio communication technologies implemented in the wireless devices in the present disclosure may communicate based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and be called by various names such as enhanced machine type communication (eMTC). For example, LTE-M technology may be implemented in at least one of the various specifications, such as 1) LTE Cat 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LIE Machine Type Communication, and/or 7) LTE M, and may not be limited to the above-mentioned names. Additionally and/or alternatively, the radio communication technologies implemented in the wireless devices in the present disclosure may include at least one of ZigBee, Bluetooth, and/or LPWAN which take into account low-power communication, and may not be limited to the above-mentioned. names. For example, ZigBee technology may generate personal area networks (PANS) associated with small/low-power digital communication based on various specifications such as IEEE 802.15.4 and may be called various names.
Referring to
In
The first wireless device 100 may include at least one transceiver, such as a transceiver 106, at least one processing chip, such as a processing chip 101, and/or one or more antennas 108.
The processing chip 101 may include at least one processor, such a processor 102, and at least one memory, such as a memory 104. It is exemplarily shown in
The processor 102 may control the memory 104 and/or the transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts described in the present disclosure. For example, the processor 102 may process information within the memory 104 to generate first information/signals and then transmit radio signals including the first information/signals through the transceiver 106. The processor 102 may receive radio signals including second information/signals through the transceiver 106 and then store information obtained by processing the second information/signals in the memory 104.
The memory 104 may be operably connectable to the processor 102. The memory 104 may store various types of information and/or instructions. The memory 104 may store a software code 105 which implements instructions that, when executed by the processor 102, perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. For example, the software code 105 may implement instructions that, when executed by the processor 102, perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. For example, the software code 105 may control the processor 102 to perform one or more protocols. For example, the software code 105 may control the processor 102 to perform one or more layers of the radio interface protocol.
Herein, the processor 102 and the memory 104 may be a part of a communication modem/circuit/chip designed to implement RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and transmit and/or receive radio signals through one or more antennas 108. Each of the transceiver 106 may include a transmitter and/or a receiver. The transceiver 106 may be interchangeably used with radio frequency (RF) unit(s). In the present disclosure, the first wireless device 100 may represent a communication modem/circuit/chip.
The second wireless device 200 may include at least one transceiver, such as a transceiver 206, at least one processing chip, such as a processing chip 201, and/or one or more antennas 208.
The processing chip 201 may include at least one processor, such a processor 202, and at least one memory, such as a memory 204. It is exemplarily shown in
The processor 202. may control the memory 204 and/or the transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts described in the present disclosure. For example, the processor 202 may process information within the memory 204 to generate third information/signals and then transmit radio signals including the third information/signals through the transceiver 206. The processor 202 may receive radio signals including fourth information/signals through the transceiver 106 and then store information obtained by processing the fourth information/signals in the memory 204.
The memory 204 may be operably connectable to the processor 202. The memory 204 may store various types of information and/or instructions. The memory 204 may store a software code 205 which implements instructions that, when executed by the processor 202, perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. For example, the software code 205 may implement instructions that, when executed by the processor 202; perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. For example, the software code 205 may control the processor 202 to perform one or more protocols. For example, the software code 205 may control the processor 202 to perform one or more layers of the radio interface protocol.
Herein, the processor 202 and the memory 204 may be a part of a communication modem/circuit/chip designed to implement RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and transmit and/or receive radio signals through one or more antennas 208. Each of the transceiver 206 may include a transmitter and/or a receiver. The transceiver 206 may be interchangeably used with RF unit. In the present disclosure, the second wireless device 200 may represent a communication modem/circuit/chip.
Hereinafter, hardware elements of the wireless devices 100 and 200 will be described more specifically. One or more protocol layers may be implemented by, without being limited to, one or more processors 102 and 202. For example, the one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as physical (PHY) layer, media access control (MAC) layer, radio link control (RLC) layer, packet data convergence protocol (PDCP) layer, radio resource control (RRC) layer, and service data adaptation protocol (SDAP) layer). The one or more processors 102 and 202 may generate one or more protocol data units (PDUs) and/or one or more service data unit (SDUs) according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. The one or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. The one or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure and provide the generated signals to the one or more transceivers 106 and 206. The one or more processors 102 and 202 may receive the signals (e.g., baseband signals) from the one or more transceivers 106 and 206 and acquire the PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
The one or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. The one or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. As an example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in the one or more processors 102 and 202. The descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure may be implemented using firmware or software and the firmware or software may be configured to include the modules, procedures, or functions. Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure may be included in the one or more processors 102 and 202 or stored in the one or more memories 104 and 204 so as to be driven by the one or more processors 102 and 202. The descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure may be implemented using firmware or software in the form of code, commands, and/or a set of commands.
The one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and/or commands. The one or more memories 104 and 204 may be configured by read-only memories (ROMs), random access memories (RAMs), electrically erasable programmable read-only memories (EPROMs), flash memories, hard drives, registers, cash memories, computer-readable storage media, and/or combinations thereof. The one or more memories 104 and 204 may be located at the interior and/or exterior of the one or more processors 102 and 202. The one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 through various technologies such as wired or wireless connection.
The one or more transceivers 106 and 206 may transmit user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, to one or more other devices. The one or more transceivers 106 and 206 may receive user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, from one or more other devices, For example, the one or more transceivers 106 and 206 may be connected to the one or more processors 107 and 202 and transmit and receive radio signals. For example, the one or more processors 102 and 202 may perform control so that the one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. The one or more processors 102 and 202 may perform control so that the one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices.
The one or more transceivers 106 and 206 may be connected to the one or more antennas 108 and 208 and the one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, through the one or more antennas 108 and 208. In the present disclosure, the one or more antennas 108 and 208 may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports).
The one or more transceivers 106 and 206 may convert received user data, control information, radio signals/channels, etc., from RF band signals into baseband signals in order to process received user data, control information, radio signals/channels, etc., using the one or more processors 102 and 202. The one or more transceivers 106 and 206 may convert the user data, control information, radio signals/channels, etc., processed using the one or more processors 102 and 202 from the base hand signals into the RF band signals. To this end, the one or more transceivers 106 and 206 may include (analog) oscillators and/or filters. For example, the one or more transceivers 106 and 206 can Up-CM-Veil OFDM baseband signals to OFDM signals by their (analog) oscillators and/or filters under the control of the one or more processors 102 and 202 and transmit the up-converted OFDM signals at the carrier frequency, The one or more transceivers 106 and 206 may receive OFDM signals at a carrier frequency and down-convert the OFDM signals into OFDM baseband signals by their (analog) oscillators and/or filters under the control of the one or more processors 102 and 202.
In the implementations of the present disclosure, a UE may operate as a transmitting device in uplink (UL) and as a receiving device in downlink (DL). In the implementations of the present disclosure, a BS may operate as a receiving device in UL and as a transmitting device in DL. Hereinafter, for convenience of description, it is mainly assumed that the first wireless device 100 acts as the UE, and the second wireless device 200 acts as the BS. For example, the processor(s) 102 connected to, mounted on or launched in the first wireless device 100 may be configured to perform the UE behavior according to an implementation of the present disclosure or control the transceiver(s) 106 to perform the UE behavior according to an implementation of the present disclosure. The processor(s) 202 connected to, mounted on or launched in the second wireless device 200 may be configured to perform the BS behavior according to an implementation of the present disclosure or control the transceiver(s) 206 to perform the BS behavior according to an implementation of the present disclosure.
In the present disclosure, a BS is also referred to as a node B (NB), an eNode B (eNB), or a gNB.
The wireless device may be implemented in various forms according to a use-case/service (refer to
Referring to
The additional components 140 may be variously configured according to types of the wireless devices 100 and 200. For example, the additional components 140 may include at least one of a power unit/battery, input/output (110) unit (e.g., audio I/O port, video I/O port), a driving unit, and a computing unit. The wireless devices 100 and 200 may be implemented in the form of, without being limited to, the robot (100a of
In
Referring to
A UE 100 includes a processor 102, a memory 104, a transceiver 106, one or more antennas 108, a power management module 110, a battery 112, a display 114, a keypad 116, a subscriber identification module (SIM) card 118, a speaker 120, and a microphone 122.
The processor 102 may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. The processor 102 may be configured to control one or more other components of the UE 100 to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. Layers of the radio interface protocol may be implemented in the processor 102. The processor 102 may include ASIC, other chipset, logic circuit and/or data processing device. The processor 102 may be an application processor. The processor 102 may include at least one of a digital signal processor (DSP), a central processing unit (CPU), a graphics processing unit (GPU), a modem (modulator and demodulator). An example of the processor 102 may be found in SNAPDRAGON™ series of processors made by Qualcomm®, EXYNOS™ series of processors made by Samsung®, a series of processors made by Apple®, HELIO™ series of processors made by MediaTek®, ATOM™ series of processors made by Intel® or a corresponding next generation processor.
The memory 104 is operatively coupled with the processor 102 and stores a variety of information to operate the processor 102. The memory 104 may include ROM, RAM, flash memory, memory card, storage medium and/or other storage device. When the embodiments are implemented in software, the techniques described herein can be implemented with modules (e.g., procedures, functions, etc.) that perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. The modules can be stored in the memory 104 and executed by the processor 102. The memory 104 can be implemented within the processor 102 or external to the processor 102 in which case those can be communicatively coupled to the processor 102, via various means as is known in the art.
The transceiver 106 is operatively coupled with the processor 102, and transmits and/or receives a radio signal. The transceiver 106 includes a transmitter and a receiver. The transceiver 106 may include baseband circuitry to process radio frequency signals. The transceiver 106 controls the one or more antennas 108 to transmit and/or receive a radio signal.
The power management module 110 manages power for the processor 102 and/or the transceiver 106, The battery 112 supplies power to the power management module 110.
The display 114 outputs results processed by the processor 102. The keypad 116 receives inputs to be used by the processor 102. The keypad 116 may be shown on the display 114.
The SIM card 118 is an integrated circuit that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers). It is also possible to store contact information on many SIM cards.
The speaker 120 outputs sound-related results processed by the processor 102. The microphone 122 receives sound-related inputs to be used by the processor 102.
The LTE/LTE-A based cell operates in an Evolved Universal Terrestrial Radio Access (E-UTRA) operating band. And, the NW-based cell operates in a NR band. Here, the DC may be called as EN-DC.
The Table 3 is an example of E-UTRA operating bands.
An operating band in NR is as follows. Table 4 shows examples of operating bands on FR1, Operating bands shown in Table 4 is a reframing operating band that is transitioned from an operating band of LTE/LTE-A. This operating band may be referred to as FR1 operating band.
Table 5 shows examples of operating bands on FR2. The following table shows operating bands defined on a high frequency. This operating band is referred to as FR2 operating band.
A carrier aggregation system is now described.
A carrier aggregation system aggregates a plurality of component carriers (CCs). A meaning of an existing cell is changed according to the above carrier aggregation. According to the carrier aggregation, a cell may signify a combination of a downlink component carrier and an uplink component carrier or an independent downlink component carrier.
Further, the cell in the carrier aggregation may be classified into a primary cell, a secondary cell, and a serving cell. The primary cell signifies a cell operated in a primary frequency. The primary cell signifies a cell which UE performs an initial connection establishment procedure or a connection reestablishment procedure or a cell indicated as a primary cell in a handover procedure. The secondary cell signifies a cell operating in a. secondary frequency. Once the RRC connection is established, the secondary cell is used to provide an additional radio resource.
As described above, the carrier aggregation system may support a plurality of component carriers (CCs), that is, a plurality of serving cells unlike a single carrier system.
The carrier aggregation system may support a cross-carrier scheduling. The cross-carrier scheduling is a scheduling method capable of performing resource allocation of a PUSCH transmitted through other component carrier through a PDCCH transmitted through a specific component carrier and/or resource allocation of a PUSCH transmitted through other component carrier different from a component carrier basically linked with the specific component carrier.
Carrier aggregation can also be classified into inter-band CA and intra-band CA. The inter-band CA is a method of aggregating and using each CC existing in different operating bands, and the intra-band CA is a method of aggregating and using each CC in the same operating band. In addition, the CA technology is more specifically, intra-band contiguous CA, intra-band non-contiguous CA and inter-band discontinuity. Non-Contiguous) CA.
The CA may be split into the intra-band contiguous CA shown in
For inter-band carrier aggregation, a carrier aggregation configuration is a combination of operating bands, each supporting a carrier aggregation bandwidth class.
in
Referring to
As shown in
The terminal should be configured to satisfy a reference sensitivity power level (REFSENS) which is the minimum average power for each antenna port of the terminal when receiving the downlink signal.
When the harmonies component and/or MD component occur as shown in the example of
For example, the REFSENS may be set such that the downlink signal throughput of the terminal is 95% or more of the maximum throughput of the reference measurement channel. When the harmonics component and/or IMP component occur, there is a possibility that the downlink signal throughput is reduced to 95% or less of the maximum throughput.
Currently, in NR V2X, a standard that supports both single carrier V2X operation and con-current operation is defined. A process of standardizing is continuing in the for V2X operation in ITS spectrum as existing LTE and sidelink in existing licensed spectrum
In the ease of a con-current operation in which NR Uu and NR SL operate simultaneously, interference due to simultaneous transmission may affect the reception of a magnetic signal. A harmonic trap filter (HTF) may be added to minimize this effect A trap filter educe the influence of harmonic components may be added to the transmitter, which cause maximum output power of transmitter end and sensitivity of receiver.
When 5G NR V2X con-current terminals operate simultaneously, HTF may be added to reduce the influence of interference sources. Although HTF is added, sensitivity of receiver, where harmonic affection decreases, may be more affected interference than no interference of harmonic. Therefore, insertion loss of HTF may be defined and MSD by HTF is proposed in this specification.
In the present disclosure, when a terminal supporting a specific V2X_Bx_nBY transmits a transmission signal in Band X and NR Band Y at the same time, the present specification recites how much a harmonic component that affects a frequency of 2 times or 3 times the frequency of a transmission signal of a specific band X affects the self-receiving sensitivity.
When a harmonic trap filer is used to prevent and mitigate the influence, the maximum output power and reception sensitivity level of the filter affect the transmission power or reception sensitivity as much as the insertion loss. Therefore, MSD value and other values are proposed through an analysis of an RF device for determining this and an analysis of an allowable amount of relaxation of reception sensitivity.
The following drawings are created to explain specific embodiments of the present disclosure. The names of the specific devices or the names of the specific signals/messages/fields shown in the drawings are provided by way of example, and thus the technical features of the present disclosure are not limited to the specific names used in the following drawings.
Harmonic trap filter (HTF) for V2X_20A_n38A may reduce the 3rd harmonic problem form Band 20 transmission for both shared antenna RF architecture and separate antenna RE architecture.
Following is the delta Tib and Rib by using of harmonic trap filter which would reduce harmonic interference problem. Delta Tib is insertion loss in transmitter pass. Delta Rib is insertion loss in receiver pass.
Table 6 is Delta Tib/Rib for LTE V2X con-current band combinations.
In LTE V2X UE, the specified additional ILs (insertion loss) were raised by 7th & 8th harmonics problem from the LTE Uu transmission in LTE V2X operation such as V2X_5-47, V2X_20-47 and V2X_28-47. Hence, the MSD requirements in the own Band 47 reception is not specified since the 7th order harmonic impact were eliminated by using of harmonic trap filter. However, lower order harmonic problem is more impacted to the own n38 reception of inter-band con-current V2X_20A_n38A UE.
So both the additional ILs and the self-interference problems in own n38 SL reception by 3rd harmonic from the Band 20 transmission is needed to study. Delta Tib/Rib are based on the current commercial filter ILs same as LIE V2X. The required delta Tib/Rib and MSD levels for V2X_20A_n38A UE may be proposed.
Table 7 is commercial harmonic trap filter's characteristics
The delta Tib/Rib of V2X band combinations are based on the HTF's additional Based on the filter characteristics, the maximum ILs is about 0.5 dB for both Tx/Rx part, so the delta Tib/Rib with 0.2 dB by shared pain approach are reused.
Shared pain approach means that total ILs will be shared to Operator and LTE Vendors as compromised solution in LTE CA (e.g. average IL is 0.46 dB. the half and half will be applied to UE vendor and operator, then delta Tib/Rib will specify with 0.23 dB to 0.2 dB).
Also, the harmonic trap filter's attenuation level to protect n38 operating frequency, we assume 25 dB attenuation level when HTF is considered. It will use to derive MSD level according to RF architectures.
Based on the above RF architectures and filter characteristics, 0.2 dB Delta Tib/Rib values for V2X_20A_n38A UE may be proposed. This may be applied to the maximum output power and REFSENS relaxation as same LTE V2X
The V2X_20A_n28A has self desense problem as like LTE CA_20A-38A as shown in
To analyze the 3rd order harmonics problem in own SL reception in NR n38, both RE architectures as below are considered.
Option 1: Separate Antenna Architecture for inter-band con-current V2X operation
Option 1-1: Separate antenna with HIT
Option 1-2: Separate antenna without HTF
Option2: Separate Antenna Architecture for inter-band con-current V2X operation
Option 2-1: Shared antenna with HTF
Option 2-2: Shared antenna without HTF
4 candidate RF architectures for V2X_20A_n38A UE as shown in above options are considered. Table 7 shows the detail isolation parameters for RF components of specific V2X_20A_n38A band combination whether consider HTF or not.
1) Option 1: Separate Antenna RF architecture
Table 8 is V2X_20A_n38A UE RF FE component isolation parameters.
Option 2: shared Antenna without HTF. Table 9 is V2X_20A_n38A UE RF FE component isolation parameters.
From the results, the 3rd harmonic may impact to the NR Band n38 SL receiver sensitivity levels for both RF architectures, Also the harmonic trap filter will improve the sensitivity level up to 8 dB enhance the REFSENS level when RAN4 consider the share antenna RF architecture. Based on the REFSENS analysis results, MSD levels for 1.0 MHz CBW (channel bandwidth) with 11.0 dB based on shared antenna RF architecture with HTF is proposed.
For both DC_20A_n38A and V2X_20A_n38A might consider same RF architecture except HTF since there was no difference for DC operation and V2X concurrent operation.
However, the 3rd harmonic from Band 20 fall into n38 receiving operating frequency for both DC_20A_n38A and V2X_20A_n38A. In DC_20A_n38A, the additional ILs was specified as table 10.
The 0.3 dB IL level is generally derived by diplexer insertion loss term which is added in single band n38 UE or Band 20 UE to support inter-band DC combinations. So, in DC_20A_n38A Harmonic trap filter is not considered even though the 3rd harmonic from Band 20 transmission will be impact to the n38 receiving frequency band.
Furthermore, MSD level by 3rd harmonic problem is specified as table 11.
However, the 10.3 dB MSD level for 10 MHz CBW is quite different with MSD results from interested companies for V2X_20A_n38A.19.2 dB MSD level may be proposed when V2X_20A_n38A UE do not consider HTF with shared antenna RE architecture which is same architecture of DC_20A_n38A UE.
But, when HTF as same V2X_20A_n38A UE architecture is considered, the required MSD level is 11.6 dB by 3rd harmonic problems.
So, both DC_20A_n38A and V2X_20A_n3SA may have same RF architecture. And additional ILs and MSD levels for each DC_20A_n28A or V2X_20A_n38A can be decided.
To solve this problem, there are three candidate options for both DC_20A_n38A UE and V2X_20A_n38A UE as follow
Option 1: Consider same RF architecture without HTF
Option 3: Consider different RF architecture
Among the above 3 candidate options, option2 and option3 to finalize the RF architecture and MSD requirements for both DC_20A_n38A and V2X_20A_n38A. are preferred. Because the harmonic trap filter will improve the sensitivity level up to 8 dB enhance the REFSENS level when the share antenna RF architecture is considered to solve the 3rd harmonic problems.
Based on the analysis results, considering option2 or option3 to solve the RE architecture and MSD problems for DC_20A_n38A UE and V2X_20A_n38A UE are proposed.
This specification is about the option 2. That is, architecture of V2X_20A_n38A may be same architecture of DC_20A_n38A.
The followings is under condition of same architecture V2X_20A_n38A with DC_20A_n38A.
Table 12 is ΔTIB,c due to EN-DC (two bands).
The values for ΔTIB,c in above table could have ±α tolerance and α can be 0 dB, 0.1 dB, 0.2 dB, 0.3 dB, 0.4 dB, 0.5 dB, . . . 1 dB, 1.5 dB, 2 dB, 2.5 dB, and 3dB. Table 13 is ΔTIB,V2X for inter-band con-current V2X operation (two bands).
1The ΔTIB,V2X is applied on top of ΔTIB,c of DC_20A_n38A to reduce 3rd harmonic impact from Band 20.
The above ΔTIB,V2X is changing value from ΔTIB,c at DC_20_n38. Therefore, TIB,V2X to apply to V2X_20_n38 is 0.3 dB because sum of ΔTIB,c and ΔTIB,V2X is 0.3 dB. In lte system, standard of ΔTIB,V2X is single carrier. In NR V2X, standard of ΔTIB,V2X may be DC.
Table 14 is Reference sensitivity exceptions (MSD) due to UL harmonic for EN-DC in NR FR1.
The values for the MSD in above table could have ±α tolerance and α can be 0 dB, 0.1 dB, 0.2 dB, 0.3 dB, 0.4 dB, 0.5 dB, . . . 1 dB, 1.5 dB, 2 dB, 2.5 dB, and 3 dB.
As shown in
Table 15 shows MSD exception for Scell due to V2X_20_n38.
Sensitivity degradation is allowed for a band if it is impacted by UL harmonic interference from another band part of the inter-band con-current V2X LE. Reference sensitivity exceptions (MSD) for the victim band (high) are specified in Table 15 with uplink configuration of the aggressor band (low) specified in Table 16.
The values for the MSD in above table could have ±α tolerance and α can be 0 dB, 0.1 dB, 0.2 dB, 0.3 dB, 0.4 dB, 0.5dB, . . . 1 dB, 1.5 dB, 2 dB, 2.5 dB, and 3 dB.
That is, for preventing a reference sensitivity in operating band n38 from degrading by 3rd harmonic, the harmonic filter are used for V2X_20A_n38A. Even though using harmonic trap filter, the interference problem is not eliminated in own Rx bands as shown in Table 8 and Table 9. Therefore, the MSD levels in Table 15 may be proposed to relax the REFSENS requirements. It means that the current REFSENS −96.5 dBm for 10 MHz CBW may be relaxed with 10.7 dB. Then, −85.8 dBm REFSENS may be applied to in n38 for V2X_20A_n38A.
Table 16 is Uplink configuration for reference sensitivity exceptions due to UL harmonic interference for inter-band con-current V2X in NR FR1.
LCRB is length of a contiguous resource block allocation. LCRB is 25 when the CBW (channel bandwidth) for receiving the sidelink signal (n38) is 10 MHz.
LCRB is 50 when the CBW for receiving, the sidelink signal (n38) is 20 MHz.
LCRB is 50 when the CBW for receiving the sidelink signal (n381 is 30 MHz.
LCRB is 50 when the CBW for receiving the sidelink signal (n38) is 40 MHz.
Table 17 is ΔRIB,c due to EN-DC (two bands).
The values for the ΔRIB,c in above table could have ±α tolerance and α can be 0 dB, 0.1 dB, 0.2 dB, 0.3 dB, 0.4 dB, 0.5 dB, . . . 1 dB, 1.5 dB, 2 dB, 2.5 dB, and 3 dB. The ILs based on transmitting uplink signal via operating band 20 in DC_20_n38 is 0.2 dB.
Table 18 is ΔRIB,V2X for two bands.
1The ΔRIB,V2X is applied on top of ΔRIB,c of DC_20_n38 to reduce 3rd harmonic impact from Band 20.
The above ΔRIB,V2X is changing value from ΔRIB,c at DC_20_n38. Therefore, RIB,V2X to apply to V2X_20_n38 is 0.3 dB because sum of ΔRIB,c and ΔRIB,V2X is 0.3 dB. In lte system, standard of ΔTIB,V2X is single carrier. In NR V2X, standard of ΔRIB,V2X may be DC.
Referring to
For reference, step S1010 may not always be performed when the terminal performs communication. For example, step S1010 may be performed only when the reception performance of the terminal is tested.
In step S1010, the terminal may preset the above proposed MSD value. For example, the terminal may preset the MSD values in Table 15. For example, for the combination of the V2X_n38A downlink band and the V2X_20 uplink band, an MSD of 10.7 dB for 10 MHz bandwidth for uplink may be applied to the reference sensitivity of the downlink band n38, an MSD of 7.7 dB for 20 MHz bandwidth for uplink may be applied to the reference sensitivity of the downlink band n38, an MSD of 5.8 dB for 30 MHz bandwidth for uplink may be applied to the reference sensitivity of the downlink band n38, an MSD of 4.7 dB for 40 MHz bandwidth for uplink may be applied to the reference sensitivity of the downlink band n38.
In step S1020, the terminal may transmit the uplink signal.
When the combination of the V2X_n38A downlink band and the V2X_20 uplink band is configured in the terminal, the terminal may transmit the uplink signal through the uplink operating bands 20.
In step S1030, the terminal may receive the downlink signal.
The terminal may receive the downlink signal based on the reference sensitivity of the downlink band n38, to which the MSD value is applied.
When the combination of the V2X_n38A downlink band and the V2X_20 uplink band is configured in the terminal, the terminal may receive the downlink signal through the downlink operating band n38.
For reference, the order in which steps S1020 and S1030 are performed may be different from that shown in
Hereinafter, an apparatus for operating in a wireless communication system, according to some embodiments of the present disclosure, will be described.
For example, a terminal may include a processor, a transceiver, and a memory.
For example, the processor may be configured to be coupled operably with the memory and the processor.
The processor may be configured to transmitting an uplink signal via operating band 20; and receiving a sidelink signal is operation band n38, wherein a value of Maximum Sensitivity Degradation (MSD) is applied to a reference sensitivity for receiving the sidelink signal, wherein based on bandwidth for receiving the sidelink signal being 10 MHz, the value of the MSD is 10.7 dB, wherein based on bandwidth for receiving the sidelink signal being 20 MHz, the value of the MSD is 7.7 dB, wherein based on bandwidth for receiving the sidelink signal being 30 MHz, the value of the MSD is 5.8 dB, wherein based on bandwidth for receiving the sidelink signal being 40 MHz, the value of the MSD is 4.7 dB.
Hereinafter, a processor for operating in a wireless communication system, according to some embodiments of the present disclosure, will be described.
The processor may be configured to transmitting an uplink signal via operating band 20; and receiving a sidelink signal vis operation band n38, wherein a value of Maximum Sensitivity Degradation (MSD) is applied to a reference sensitivity for receiving the sidelink signal, wherein based on bandwidth for receiving the sidelink signal being 10 MHz, the value of the MSD is 10.7 dB, wherein based on bandwidth for receiving the sidelink signal being 20 MHz, the value of the MSD is 7.7 dB, wherein based on bandwidth for receiving the sidelink signal being 30 MHz, the value of the MSD is 5.8 dB, wherein based on bandwidth for receiving the sidelink signal being 40 MHz, the value of the MSD is 4.7 dB.
Hereinafter, a non-transitory computer-readable medium has stored thereon a plurality of instructions for operating in a wireless communication system, according to some embodiments of the present disclosure, will be described.
According to some embodiment of the present disclosure, the technical features of the present disclosure could be embodied directly in hardware, in a software executed by a processor, or in a combination of the two. For example, a method performed by a wireless device in a wireless communication may be implemented in hardware, software, firmware, or any combination thereof. For example, a software may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other storage medium.
Some example of storage medium is coupled to the processor such that the processor can read information from the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. For other example, the processor and the storage medium may reside as discrete components.
The computer-readable medium may include a tangible and non-transitory computer-readable storage medium.
For example, non-transitory computer-readable media may include random access memory (RAM) such as synchronous dynamic random access memory (SDRAM), read-only memory (ROM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), FLASH memory, magnetic or optical data storage media, or any other medium that can be used to store instructions or data structures. Non-transitory computer-readable media may also include combinations of the above.
In addition, the method described herein may be realized at least in part by a computer-readable communication medium that carries or communicates code in the form of instructions or data structures and that can be accessed, read, and/or executed by a computer.
According to some embodiment of the present disclosure, a non-transitory computer-readable medium has stored thereon a plurality of instructions. The stored a plurality of instructions may be executed by a processor of a device.
The stored a plurality of instructions may cause the device to transmitting an uplink signal via operating band 20; and receiving a sidelink signal vis operation band n38, wherein a value of Maximum Sensitivity Degradation (MSD) is applied to a reference sensitivity for receiving the sidelink signal, wherein based on bandwidth for receiving the sidelink signal being 10 MHz, the value of the MSD is 10.7 dB, wherein based on bandwidth r receiving the sidelink signal being 20 MHz, the value of the MSD is 7.7 dB, wherein based on bandwidth for receiving the sidelink signal being 30 MHz, the value of the MSD is 5.8 dB, wherein based on bandwidth for receiving the sidelink signal being 40 MHz, the value of the MSD is 4.7 dB.
The present disclosure can have various advantageous effects.
For example, by performing disclosure of this specification, UE can transmit signal by applying MSD value.
Effects obtained through specific examples of the present specification are not limited to the effects listed above. For example, there may be a variety of technical effects that a person having ordinary skill in the related art can understand or derive from this specification. Accordingly, the specific effects of the present disclosure are not limited to those explicitly described herein, but may include various effects that may be understood or derived from the technical features of the present disclosure.
Claims in the present disclosure can be combined in a various way. For instance, technical features in method claims of the present disclosure can be combined to be implemented or performed in an apparatus, and technical features in apparatus claims can be combined to be implemented or performed in a method. Further, technical features in method claim(s) and apparatus claim(s) can be combined to be implemented or performed in an apparatus. Further, technical features in method claims) and apparatus claim(s) can be combined to be implemented or performed in a method. Other implementations are within the scope of the following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2020-0085361 | Jul 2020 | KR | national |
| 10-2020-0137109 | Oct 2020 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2021/008660 | 7/7/2021 | WO |
