WO2025232247A1 - 用户设备、无线通信方法、装置、介质和程序产品 - Google Patents

用户设备、无线通信方法、装置、介质和程序产品

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Publication number
WO2025232247A1
WO2025232247A1 PCT/CN2024/144212 CN2024144212W WO2025232247A1 WO 2025232247 A1 WO2025232247 A1 WO 2025232247A1 CN 2024144212 W CN2024144212 W CN 2024144212W WO 2025232247 A1 WO2025232247 A1 WO 2025232247A1
Authority
WO
WIPO (PCT)
Prior art keywords
requirement
refsens
redcap
transmit power
maximum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/144212
Other languages
English (en)
French (fr)
Inventor
刘博�
杨姗
佘小明
朱剑驰
陈鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Telecom Corp Ltd Technology Innovation Center
China Telecom Corp Ltd
Original Assignee
China Telecom Corp Ltd Technology Innovation Center
China Telecom Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Telecom Corp Ltd Technology Innovation Center, China Telecom Corp Ltd filed Critical China Telecom Corp Ltd Technology Innovation Center
Publication of WO2025232247A1 publication Critical patent/WO2025232247A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non-transmission

Definitions

  • This disclosure generally relates to wireless communication technologies, and more specifically to user equipment, wireless communication methods and apparatus, computer-readable storage media and program products for wireless communication.
  • New Radio is a key technology for 5G wireless networks, first proposed by the 3rd Generation Partnership Project (3GPP) in the Rel-15 standard.
  • 3GPP 3rd Generation Partnership Project
  • ITU-R The International Telecommunication Union (ITU) Radiocommunication Sector (ITU-R) has developed the overall 5G roadmap, "IMT-2020,” which defines three main application scenarios for 5G: Enhanced Mobile Broadband (eMBB), Ultra-Reliable and Low-Latency Communications (uRLLC), and Massive Machine-Type Communications (mMTC).
  • eMBB primarily addresses mobile communication guarantees under ultra-high data transmission rates and large coverage areas.
  • uRLLC mainly targets vertical industry application scenarios with extremely high requirements for latency and reliability.
  • mMTC is primarily designed for Internet of Things (IoT) applications that require massive connectivity, low power consumption, low data rates, and low cost.
  • IoT Internet of Things
  • a user equipment (UE) for wireless communication comprising: a transceiver including one or two receive antenna ports; and a processor coupled to the transceiver, the transceiver and the processor being configured such that the UE: while increasing the maximum transmit power supported by the lightweight RedCap UE for transmitting uplink signals, meets an adjusted reference sensitivity (REFSENS) requirement for receiving downlink signals, wherein the bandwidth configuration of the UE supports a first maximum operating bandwidth, the adjusted REFSENS requirement being adjusted based on the REFSENS requirements of the two receive antenna ports, and the first maximum operating bandwidth not greater than the maximum value of the operating bandwidth applicable to the REFSENS requirements of the two receive antenna ports.
  • REFSENS adjusted reference sensitivity
  • a wireless communication method performed by a user equipment (UE), the method comprising: requiring the transmission of an uplink signal using a first power level (PC) to increase the maximum transmit power supported by a lightweight RedCap UE, wherein the UE includes one or two receive antenna ports, and the bandwidth configuration of the UE supports a first maximum operating bandwidth, the UE being configured to meet an adjusted reference sensitivity (REFSENS) requirement for receiving downlink signals, the adjusted REFSENS requirement being adjusted based on the REFSENS requirements of the two receive antenna ports, and the first maximum operating bandwidth not exceeding the maximum value of the operating bandwidth applicable to the REFSENS requirements of the two receive antenna ports.
  • PC power level
  • REFSENS adjusted reference sensitivity
  • an apparatus for wireless communication applied in a user equipment (UE), the apparatus comprising: a transmitting unit configured to transmit an uplink signal using a first power level (PC) requirement to increase the maximum transmit power supported by a lightweight RedCap UE; and a receiving unit configured to receive a downlink signal in a manner that satisfies an adjusted reference sensitivity (REFSENS) requirement, wherein the UE includes one or two receive antenna ports, the bandwidth configuration of the UE supports a first maximum operating bandwidth, the adjusted REFSENS requirement is obtained based on the REFSENS requirements of the two receive antenna ports, and the first maximum operating bandwidth is not greater than the maximum value of the operating bandwidth applicable to the REFSENS requirements of the two receive antenna ports.
  • a transmitting unit configured to transmit an uplink signal using a first power level (PC) requirement to increase the maximum transmit power supported by a lightweight RedCap UE
  • a receiving unit configured to receive a downlink signal in a manner that satisfies an adjusted reference sensitivity (REFSENS) requirement, wherein the UE
  • a computer-readable storage medium stores program instructions for performing wireless communication, which, when executed by a processor of a user device, cause the user device to perform the aforementioned method for wireless communication.
  • a computer program product including computer-executable instructions that, when executed by a processor of a user equipment (UE), cause the UE to perform the aforementioned method for wireless communication.
  • UE user equipment
  • Figure 1 shows a schematic diagram of the network environment of a user equipment (UE) according to an embodiment of the present disclosure.
  • Figure 2 shows a schematic diagram of the composition of a UE according to an embodiment of the present disclosure.
  • Figure 3 illustrates the interference caused to the downlink by the increase in uplink transmit power.
  • Figure 4 shows a flowchart of a method for wireless communication according to an embodiment of the present disclosure.
  • Figure 5 shows a schematic diagram of the composition of an apparatus for wireless communication according to an embodiment of the present disclosure.
  • Figure 6 illustrates an exemplary electronic device that can be used to implement embodiments of the present disclosure.
  • qualifiers such as “first” and “second” are used merely for ease of distinction and, unless otherwise specified, do not indicate the order of the described elements.
  • RedCap UEs Under current standard protocols, the radio frequency transmit power that RedCap UEs can use is relatively limited. For example, in the Rel-17 standard, only power level 3 (PC3) requirements for frequency range 1 (FR1) can be applied to RedCap UEs, and the maximum transmit power defined for PC3 is 23 dBm. Currently, RedCap UEs cannot use higher maximum transmit powers. RedCap UEs and non-RedCap 5G NR UEs (referred to as "regular UEs”) typically operate in the same network. Even if the maximum transmit power allowed for regular UEs is increased, the cell coverage of 5G cells is still limited by the power level-restricted RedCap UEs.
  • PC3 power level 3
  • FR1 frequency range 1
  • RedCap UEs located at the cell edge will be reduced due to communication quality issues. Therefore, to expand the cell coverage of 5G deployments or improve the data transmission rate of RedCap UEs at the cell edge, improvements to UEs, especially RedCap UEs, are necessary.
  • embodiments of this disclosure provide improved UEs, wireless communication methods and apparatuses, computer-readable storage media or computer program products for wireless communication, so that UEs, particularly reduced-capability UEs, can communicate with higher transmit power.
  • RedCap UEs transmit uplink signals at a higher maximum transmit power than the requirements for baseline UEs (e.g., UEs conforming to the 5G NR protocol specification and/or existing RedCap UEs) in existing standard protocols.
  • baseline UEs e.g., UEs conforming to the 5G NR protocol specification and/or existing RedCap UEs
  • the downlink signal reception of the RedCap UE may not meet the Reference Sensitivity (REFSENS) requirements set for the baseline UE.
  • REFSENS Reference Sensitivity
  • embodiments of this disclosure also propose applying an adjusted REFSENS requirement to the downlink signal reception while increasing the maximum transmit power of the uplink signal of the RedCap UE, so that the RedCap UE can meet the adjusted REFSENS requirement and thus pass possible network access standard checks.
  • 5G and NR are used interchangeably in this disclosure. Furthermore, it should be recognized that although various aspects of this disclosure are described using terminology commonly used in 5G technology, these aspects can be applied to RAT (Radio Access) technologies beyond 5G (e.g., 6G).
  • RAT Radio Access
  • FIG. 1 illustrates a schematic diagram of a network environment for a UE according to an embodiment of the present disclosure.
  • the wireless network 130 may be part of an NR network, or may include components of an NR network.
  • the wireless network 130 may include one or more base stations (BS) 200, one or more Class 1 UEs 110 (including 110a and 110b, collectively referred to as "Class 1 UE 110"), and one or more Class 2 UEs 100 (including 100a and 100b, collectively referred to as "Class 2 UE 100”), as well as other network elements (not shown).
  • BS base stations
  • Class 1 UE 110 including 110a and 110b, collectively referred to as "Class 1 UE 110”
  • Class 2 UEs 100 including 100a and 100b, collectively referred to as "Class 2 UE 100”
  • other network elements not shown.
  • the BS 200 is a network device that communicates with the UE, and in some cases may also be referred to as a Node B (NB), eNB, gNB, Access Point (AP), or Transmission and Reception Point (TRP), etc.
  • NB Node B
  • eNB eNB
  • gNB Access Point
  • TRP Transmission and Reception Point
  • Each BS can provide communication coverage for a certain area, which is called a cell.
  • Wireless network 130 can be a cell whose communication coverage is provided by BS 200, and can be any of a macro-cell, micro-cell, pico-cell, or femto-cell.
  • BS 200 can be one of a macro base station, micro base station, pico base station, or femto-cell.
  • Each BS 200 can serve one or more cells. In cases where the cell coverage area is large (e.g., a cell radius of several kilometers), BS 200 may also include one or more relay BSs (also known as relay stations or relay
  • Type I UE 110 and Type II UE 100 can be collectively referred to as UE.
  • UEs can be distributed within the wireless network 130. Each UE can be mobile or stationary.
  • a wireless communication link 120 (including links 120a, 120b, 120c, and 120d) is established between the UE and the BS 200, where the link from the UE to the BS 200 is called the uplink communication link, and the link from the BS 200 to the UE is called the downlink communication link.
  • UEs can also be referred to as access terminals, terminals, mobile stations, subscriber units, etc.
  • UEs can be cellular phones (including smartphones), wireless communication devices, handheld devices, computers, wearable devices, media devices, sensor devices, vehicle devices, etc.
  • the UE and BS 200 communicate via radio spectrum.
  • the radio spectrum used can be divided into multiple frequency ranges.
  • the usable frequency range can be divided into frequency range 1 (FR1) and frequency range 2 (FR2), where FR1 has a frequency range of 410MHz-7.125GHz and FR2 has a frequency range of 24.25GHz-52.6GHz. Since the frequency of FR1 is mainly below 6GHz, it is also referred to as the sub-6GHz band. FR2 is also referred to as the millimeter-wave band. It should be understood that since the frequency ranges included in FR1 and FR2 may be modified, the contents of this disclosure can be applied to modified FR1 and FR2.
  • the power class (PC) requirement adopted by the UE can be defined as the maximum transmit power over a given channel bandwidth.
  • PC power class
  • 3GPP defines various UE power classes for the FR1 and FR2 frequency ranges. Due to the different frequency characteristics of FR1 and FR2, the measurement parameters and indicators required for the PC also differ. Within the FR1 frequency range, the UE power class is specified using cable measurements, with the measurement indicator being the maximum output power. Within the FR2 frequency range, the UE power class requirement is specified using over-the-air (OTA) measurements, and the measurement indicators include:
  • OTA over-the-air
  • TRP Total Radiated Power
  • EIRP Effective Isotropic Radiated Power
  • EIRP Effective Isotropic Radiated Power
  • the power level requirements include the power level grade, the corresponding maximum transmit power value, and the applicable frequency band.
  • the power level requirements of FR1 are shown in Table 1 below:
  • Table 1 shows the power values and frequency band distribution required for different power levels in FR1.
  • the first type of UE 110 is referred to herein as the baseline UE.
  • the baseline UE is a reference to various capability changes of the UE according to embodiments of this disclosure. Different capabilities of the UE modified according to embodiments of this disclosure can be referenced to the corresponding capabilities of different baseline UEs.
  • the second type of UE 100 is a UE according to embodiments of this disclosure. Compared to the baseline UE, it has the ability to reduce complexity, cost, and power consumption.
  • the second type of UE adopts a first PC requirement, which defines a first maximum transmit power, while the first type of UE adopts a default PC requirement that defines a second maximum transmit power.
  • the first maximum transmit power is greater than the second maximum transmit power.
  • the PC requirement that the second type of UE can adopt increases the maximum transmit power compared to the default PC requirement of the first type of UE.
  • the first type of UE can be a UE that meets the existing 5G NR communication protocol standard, including regular UEs and RedCap UEs.
  • the default PC requirement for both UEs (referring to regular UEs here) and RedCap UEs is PC3, which corresponds to a maximum transmit power of 23dBm, as shown in Table 1 above.
  • the "default PC requirement" adopted by the UE refers to the PC requirement adopted by the UE under normal or most circumstances.
  • the default PC requirement does not exclude the UE from adopting other PC requirements, but rather means that this PC requirement has a greater probability of being selected compared to other PC requirements.
  • the first maximum transmit power is greater than the maximum transmit power corresponding to the PC requirement that RedCap UEs can adopt.
  • the PC requirement that RedCap UEs can adopt is only the PC3 requirement, with a corresponding maximum transmit power of 23dBm.
  • the power level requirements adopted by the second type of UE define a maximum transmit power higher than 23dBm.
  • the second type of UE can adopt the PC2 requirement in FR1, and the PC2 requirement specifies a maximum transmit power of 26dBm.
  • Table 2 lists the operating frequency bands that the second type of UE can support for the PC2 requirement.
  • Table 2 shows the operating frequency bands that the second type of UE can support for PC2.
  • Type II UEs have one or at most two receive antenna ports, while Type I UEs have more than two receive antenna ports.
  • a 5G NR UE supports a minimum of two antenna ports simultaneously for reception in some frequency bands, and a minimum of four antenna ports simultaneously for reception in others.
  • the maximum number of MIMO (Multiple Input Multiple Output) layers for downlink signal reception for Type I UEs is a minimum of two or four layers.
  • Type II UEs can be limited to having only one receive antenna port, which is entirely different from Type I UEs, as the latter are required to support a minimum of two receive antenna ports.
  • Type II UEs use one or at most two antenna ports for reception in the various supported frequency bands. Due to the reduced number of receive antenna ports, the required number of MIMO layers is also reduced to one layer (for one receive antenna port) or at most two layers (for two receive antenna ports).
  • the second type of UE has a maximum operating bandwidth equal to or smaller than that of the first type of UE.
  • the maximum operating bandwidth that a UE has or supports, as described herein, includes the maximum UE channel bandwidth that the UE can utilize within its supported operating band and subcarrier spacing (SCS). This maximum UE channel bandwidth can be applied to the UE's transmit path and/or receive path.
  • the bandwidth configuration of the second type of UE supports a first maximum operating bandwidth.
  • the bandwidth configuration of the first type of UE supports a second maximum operating bandwidth, where the first maximum operating bandwidth is not greater than the second maximum operating bandwidth.
  • the first type of UE is a UE conforming to the 3GPP 5G NR standard protocol specification (non-RedCap portion).
  • the first type of UE could be a UE for eMBB application scenarios.
  • the maximum operating bandwidth supported by this category of UE is 100MHz.
  • the maximum operating bandwidth supported by the second type of UE is smaller than that supported by the first type of UE, for example, it could be 20MHz. This reduces the requirements for the RF front-end filter of the second type of UE and also reduces the requirements for baseband processing capabilities.
  • the first type of UE is a RedCap UE that meets the existing 5G NR communication protocol standard. In FR1, this type of UE supports a maximum operating bandwidth of 20MHz. In contrast, the second type of UE can support a maximum operating bandwidth of the same value, which is also 20MHz.
  • the second type of UE is limited to having only one transmit antenna port, thereby reducing transmitter complexity.
  • some first type UEs such as conventional UEs that meet the 5G NR protocol specifications, may have two or more transmit antenna ports.
  • the second type of UE is defined as being able to operate in HD-FDD (Half-Duplex Frequency Division Duplexing) mode, in addition to full-duplex operation in TDD (Time Division Duplexing) and FDD (Frequency Division Duplexing) modes.
  • HD-FDD High-Duplex Frequency Division Duplexing
  • TDD Time Division Duplexing
  • FDD Frequency Division Duplexing
  • the second type of UE is a modified RedCap UE.
  • This modified RedCap UE further meets the power class adjustments described below, as well as other adjustments adapted to the power class adjustments, based on the existing RedCap UE specified in the 3GPP Rel-17 standard or earlier.
  • the UE can inform the BS whether it supports RedCap UE functionality in a capability report sent to the BS 200.
  • Table 3 illustrates the configuration differences between the first type of UE and the second type of UE described above. It should be understood that the configuration differences listed in the table do not need to exist simultaneously; rather, in some embodiments, differences may only exist in one or more of the configuration items.
  • Figure 1 shows the simultaneous presence of Type I UEs and Type II UEs in a cell
  • the presence of Type I UEs is not mandatory.
  • Type I UEs may be absent, and only Type II UEs may exist.
  • RAT technologies e.g., 2G, 3G, 4G technologies
  • RedCap UE As an example of a second type of UE according to embodiments of this disclosure to illustrate various aspects of the disclosure.
  • eRedCap enhanced lightweight
  • Figure 2 shows a schematic diagram of the composition of a UE according to an embodiment of the present disclosure.
  • the UE may be a specific implementation of UE 100a and 100b in Figure 1.
  • Transceiver 102 receives control or data signals from processor 104 and transmits those signals outwards, or conversely, receives signals from an external source and recovers the control or data signals through demodulation, decoding, or other processing before sending them to processor 104.
  • Transceiver 102 may include receive antenna ports 106a and 106b. Although two receive antenna ports are shown in the figures, in some embodiments only one receive antenna port may be included. Alternatively, in some cases, although the hardware includes two receive antenna ports, the UE may be configured to use only one of the receive antenna ports for reception. In some embodiments, receive antenna ports 106a and 106b may include corresponding antenna components.
  • Antenna components may be one or more antenna panels, antenna groups, antenna element groups, and/or antenna arrays.
  • receive antenna ports 106a and 106b may not include antenna components but instead provide interfaces for connecting external antenna components.
  • One or both of receive antenna ports 106a and 106b may also be used as transmit antenna ports. Whether an antenna port is used for receiving or transmitting is switched by a duplexer in the Radio Frequency Frontend (RFFE).
  • RFFE Radio Frequency Frontend
  • both receive antenna ports 106a and 106b can be used as transmit antenna ports, the UE is configured to use only one of them for transmitting; that is, the UE can be configured to have one transmit antenna port and two receive antenna ports, or one transmit antenna port and one receive antenna port.
  • RFFEs 108a and 108b are connected to antenna ports 106a and 106b, respectively.
  • RFFEs 108a and 108b mainly include one or more of the following: filters, power amplifiers (PAs), RF switches/tuners, and low-noise amplifiers (LNAs).
  • Filters can include duplexers, tripplexers, etc., and can be used in both the transmit and receive paths.
  • a duplexer consists of two band-stop filters at different frequencies. Because of frequency division multiplexing (FDD), the transmit and receive paths operate simultaneously, and the duplexer is used to prevent interference between the transmitted and received signals.
  • Power amplifiers are mainly used in the transmit path to amplify RF signals.
  • the power level used by the UE affects the operating parameters of the power amplifier.
  • RF switches are used to switch circuits, including switching between transmit and receive circuits and switching between different frequency bands/antennas.
  • Low-noise amplifiers are mainly used in the receive path to amplify the received signal.
  • Modems 112a and 112b are connected to RFFEs 108a and 108b, respectively, for modulating (e.g., digital-to-analog conversion, up-conversion, etc.) the uplink signal to be transmitted, or demodulating (e.g., down-conversion, analog-to-digital conversion, etc.) the received downlink signal.
  • transceiver 102 also includes a MIMO detector 114.
  • the MIMO detector 114 is connected between the modem and the receive processor corresponding to each receive antenna port, for combining and detecting multiple received signals.
  • the receive processor 258 can decode the detected signal and provide the decoded information to the processor 104.
  • the transmit processor 118 obtains control/data information from the processor 104 and performs encoding processing.
  • the number of processors 104 can be a combination of one or more. In some embodiments, unlike that shown in FIG2, a receiving processor 116 and a transmitting processor 118 may also be included as part of processor 104.
  • the UE's Reference Sensitivity also known as the "Reference Sensitivity Power Level” reflects the UE's ability to receive data from a specified reference measurement channel at a given average throughput under low signal level conditions. This capability is characterized by the minimum average power of each antenna port of the UE under a given average throughput. In RF tests for operator or network access certification, the UE's REFSENS needs to meet certain REFSENS requirements. In the UE 100's receive path, the number and performance of antennas, filters in the RFFE, RF switches and low-noise amplifiers, demodulation and decoding methods, and whether MIMO reception is used all affect the UE 100's reference sensitivity.
  • Figure 3 illustrates the interference caused by an increase in uplink transmit power to the downlink.
  • the UE uses FDD mode
  • some high-order automodulation or intermodulation components of some frequencies in the uplink band may fall into the downlink band, causing interference.
  • the amplitude of the interference is affected by the uplink transmit power.
  • the uplink transmit power changes, the amplitude of the interference also changes accordingly, causing a change in REFSENS, requiring adjustments to the originally determined REFSENS requirements.
  • the uplink transmit power is increased, the interference will be more significant, leading to REFSENS degradation and failure to meet the originally determined REFSENS requirements.
  • transceiver 102 and processor 104 are configured such that UE 100, while increasing the maximum transmit power supported by the lightweight RedCap UE for uplink signal transmission, meets the adjusted reference sensitivity REFSENS requirement for downlink signal reception.
  • This adjusted REFSENS requirement is derived based on the REFSENS requirement of the two receive antenna ports (2RX).
  • a first maximum operating bandwidth is not greater than the maximum value of the operating bandwidth applicable to the 2RX REFSENS requirement.
  • transceiver 102 and processor 104 are further configured such that the UE 100 adopts a first power level PC requirement for uplink signal transmission.
  • the first PC requirement defines a first maximum transmit power, and this first maximum transmit power is greater than a preset maximum transmit power for the RedCap UE.
  • the preset maximum transmit power for the RedCap UE is a pre-agreed maximum transmit power allowed for uplink signal transmission by an existing RedCap UE. In some cases, this can be achieved by agreeing on a default PC requirement allowed for the RedCap UE.
  • a default PC requirement for the RedCap UE can be agreed upon, which defines a second maximum transmit power, and the preset maximum transmit power can be this second maximum transmit power.
  • the default PC requirement for a RedCap UE is PC3 under FR1, corresponding to a defined second maximum transmit power of 23dBm.
  • the UE adopts a first PC requirement, and the first maximum transmit power defined by this first PC requirement is higher than 23dBm.
  • it can adopt PC2 in FR1, with a corresponding first maximum transmit power of, for example, 26dBm.
  • the UE according to embodiments of this disclosure can adopt the default second maximum transmit power, or the increased first maximum transmit power, or both, switching according to the specific usage scenario.
  • the method according to embodiments of this disclosure increases the maximum transmit power of the uplink signal by adopting a first PC requirement that defines a larger maximum transmit power.
  • the 2RX REFSENS requirement is a REFSENS requirement defined when the UE has two receive antenna ports.
  • This UE with two receive antenna ports can be the Type I UE described above, i.e., the baseline UE.
  • the 2RX REFSENS requirement is defined if at least one of the following conditions is met:
  • the same duplex mode is used for the RedCap UE as in the embodiments of this disclosure. Accordingly, the 2RX REFSENS requirement and the modified REFSENS requirement are defined under the same duplex mode. That is, if the RedCap UE operates in one of TDD mode, FDD mode, or HD-FDD mode, the 2RX REFSENS requirement is also for that mode.
  • the maximum applicable operating bandwidth is greater than or equal to the maximum operating bandwidth supported by the bandwidth configuration of the RedCap UE in the embodiments of this disclosure. As shown in Tables 4-6, the maximum applicable operating bandwidth for 2RX REFSENS in different frequency bands is 50MHz, 100MHz, and 20MHz. In contrast, the maximum operating bandwidth supported by the bandwidth configuration of the RedCap UE in the embodiments of this disclosure is 20MHz.
  • the maximum transmit power defined by the power class requirement is less than the maximum transmit power defined by the power class requirement adopted by the RedCap UE according to embodiments of this disclosure.
  • the UE is required to adopt a default power class requirement, which is the PC3 requirement defined under FR1.
  • the 2RX REFSENS requirement in Table 4-6 is obtained when the power class requirement is the default PC3 requirement.
  • the power class requirement adopted by the RedCap UE according to embodiments of this disclosure is the PC2 requirement defined under FR1.
  • the 2RX REFSENS requirement can be predetermined.
  • Table 4 lists the 2RX REFSENS requirements in the FDD band.
  • Table 5 lists the 2RX REFSENS requirements in the TDD band.
  • Table 6 lists the requirements for 2RX REFSENS using HD-FDD mode.
  • the adjusted REFSENS requirement is obtained by adding an adjustment amount to the 2RX REFSENS requirement. Therefore, after determining the 2RX REFSENS requirement, the adjustment amount for the 2RX REFSENS requirement can be further specified so that the RedCap UE can still meet the adjusted REFSENS requirement after the uplink transmit power is increased.
  • the adjustment amount is related to both the duplex mode operated by the UE and the number of receive antenna ports used by the UE.
  • the adjustment amount relative to the 2RX REFSENS requirement can be 0.
  • the increase in uplink transmit power affects downlink reception, requiring appropriate adjustments to the 2RX REFSENS requirement.
  • the portion of the adjustment resulting from the power level difference that brings the maximum transmit power increase is called Reference Sensitivity Degradation.
  • the magnitude of the Reference Sensitivity Degradation varies depending on the frequency band operated by the UE and the configured uplink channel bandwidth.
  • Table 7 below shows the reference sensitivity degradation when the RedCap UE (with two receive antenna ports) supports PC2.
  • the reference sensitivity degradation requirement for a specified channel bandwidth with a maximum channel bandwidth of 20 MHz is 0 dB.
  • the reference sensitivity degradation requirement for a specified channel bandwidth with a maximum channel bandwidth of 20 MHz is 0.5 dB.
  • the maximum reference sensitivity degradation requirement for a specified channel bandwidth with a maximum channel bandwidth of 20 MHz is 1 dB.
  • the maximum reference sensitivity degradation requirement for a specified channel bandwidth with a maximum channel bandwidth of 20 MHz is 2.3 dB.
  • the adjustment amount required compared to 2RX REFSENS is 0.
  • the portion of the adjustment amount resulting from the reduction of the number of receive antenna ports from two to one is called the single receive antenna port reference sensitivity margin ( ⁇ R 1R ).
  • Table 8 below shows ⁇ R ⁇ sub>1R ⁇ /sub> in TDD and FDD modes when the RedCap UE uses a single receive antenna port.
  • ⁇ R ⁇ sub>1R ⁇ /sub> remains constant regardless of changes in channel bandwidth.
  • ⁇ R ⁇ sub>1R ⁇ /sub> depends on the downlink channel bandwidth configured for the UE. When the uplink and downlink channel bandwidths are symmetrical, the downlink channel bandwidth is equal to the uplink channel bandwidth.
  • Table 8 shows the ⁇ R 1R when the RedCap UE (supporting PC3) uses a single receive antenna port.
  • the RedCap UE uses PC3 and one receive antenna port
  • the adjusted REFSENS requirements are shown in Table 9 below. It can be seen that in some frequency bands (e.g., n1, n3, etc.), the corresponding margin ⁇ R1R is 2.5dB compared to Table 8.
  • Table 9 shows the REFSENS requirements for RedCap using a single receive antenna port in HD-FDD mode.
  • the adjustment required for 2RX REFSENS is the sum of the reference sensitivity degradation and ⁇ R 1R .
  • Table 10 below shows the calculation method for the adjustment amount for different RedCap UEs in different duplex modes.
  • Table 10 shows the adjustment amounts for different RedCap UEs under different duplex modes.
  • the adjustment amount is the sum of Tables 7 and 8, as shown in Table 11 below.
  • Table 11 shows the adjustment amounts of a RedCap UE in FDD mode using PC2 and one receive antenna port.
  • One advantage of embodiments according to this disclosure is that the maximum transmit power of the uplink signal of a UE with reduced capabilities is increased to expand the cell coverage of 5G deployments or increase the data transmission rate of such UEs at the cell edge, while applying adjusted REFSENS requirements to the downlink signal reception so that the UE can meet the adjusted REFSENS requirements and thus pass possible network access standard checks.
  • Method 400 can be performed by a UE (e.g., the second type of UE described above) according to embodiments of the present disclosure.
  • Method 400 includes step 402, wherein the UE according to embodiments of the present disclosure transmits uplink signals with a first power level PC requirement to increase the maximum transmit power supported by the RedCap UE.
  • the UE includes one or two receive antenna ports.
  • the bandwidth configuration of the UE supports a first maximum operating bandwidth.
  • the UE is also configured to meet adjusted REFSENS requirements for downlink signal reception.
  • the adjusted REFSENS requirements are adjusted based on the REFSENS requirements of the two receive antenna ports (2RX).
  • the first maximum operating bandwidth is not greater than the maximum value of the operating bandwidth applicable to the 2RX REFSENS requirements.
  • the use of a first PC to request the transmission of an uplink signal to increase the maximum transmit power supported by the RedCap UE can be achieved by the first PC request defining a first maximum transmit power, which is greater than a preset maximum transmit power for the RedCap UE.
  • Figure 5 illustrates an apparatus for wireless communication according to an embodiment of the present disclosure.
  • the apparatus 500 can be applied to a UE, for example, to a second type UE as shown in Figure 1.
  • the UE includes one or two receive antenna ports.
  • the bandwidth configuration of the UE supports a first maximum operating bandwidth.
  • the UE is a 5G RedCap UE or a 5G eRedCap UE.
  • the apparatus 500 includes a transmitting unit 502 and a receiving unit 504.
  • the transmitting unit 502 is configured to transmit uplink signals according to a first PC requirement to increase the maximum transmit power supported by the lightweight RedCap UE.
  • the receiving unit 504 is configured to receive downlink signals in a manner that satisfies adjusted REFSENS requirements.
  • the adjusted REFSENS requirements are based on 2RX REFSENS requirements.
  • the first maximum operating bandwidth is not greater than the maximum value of the operating bandwidth applicable to the 2RX REFSENS requirements.
  • Figure 6 illustrates an exemplary electronic device that can be used to implement the methods according to embodiments of the present disclosure.
  • the RedCap UE according to embodiments of the present disclosure can be implemented as such an electronic device.
  • the electronic device 600 may include one or more processors 602.
  • the one or more processors 602 may be any kind of processor and may include, but are not limited to, one or more general-purpose processors or dedicated processors (such as dedicated processing chips).
  • the processor 602 can execute instructions to implement the methods for wireless communication described above.
  • the one or more processors 602 may include the processor 104 shown in Figure 2.
  • Electronic device 600 may also include or be connected to non-transitory storage device 604, which may be any non-transitory storage device capable of storing data, and may include, but is not limited to, disk drives, optical storage devices, solid-state storage, floppy disks, flexible disks, hard disks, magnetic tapes or any other magnetic media, compressed disks or any other optical media, cache memory and/or any other storage chip or module, and/or any other medium from which a computer may read data, instructions and/or code.
  • Non-transitory storage device 604 may store various dynamic and static instructions and/or data for processor 602 to read and/or execute in order to implement the methods for wireless communication described above.
  • the processor 602 and/or storage device 604 can be connected to or communicate with the bus 606 via one or more interfaces.
  • the bus 606 may include, but is not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, Enhanced ISA (EISA) bus, Video Electronics Standards Association (VESA) local bus, and PCI bus or PCI-e bus, etc.
  • I/O device 608 can be any external device capable of interacting with electronic device 600.
  • I/O device 608 may include, but are not limited to, keyboards, touchpads, mice, joysticks or other pointing devices, microphones, speakers, displays, or printers.
  • Network interface 610 may be any kind of device or system capable of enabling communication with external devices and/or networks, and may include, but is not limited to, modems, network cards, infrared communication devices, wireless communication devices and/or chipsets (such as Bluetooth devices, WiFi devices, WiMax devices, cellular communication facilities, etc.).
  • I/O device 608 and/or network interface 610 may also be communicatively coupled to processor 602 and/or storage device 604 via bus 606.
  • processors can be implemented as integrated circuits (ICs), application-specific integrated circuits (ASICs), or large-scale integrated circuits (LSIs), system LSIs, super LSIs, or ultra LSI components that perform some or all of the functions described in this disclosure.
  • ICs integrated circuits
  • ASICs application-specific integrated circuits
  • LSIs large-scale integrated circuits
  • system LSIs system LSIs
  • super LSIs super LSIs
  • ultra LSI components that perform some or all of the functions described in this disclosure.
  • This disclosure includes the use of software, application programs, computer programs, or algorithms.
  • Software, application programs, computer programs, or algorithms may be stored on a non-transitory computer-readable medium or computer program product to cause a computer, such as one or more processors, to perform the steps described above and in the accompanying drawings.
  • a computer such as one or more processors
  • one or more memories may store the software or algorithm in executable instructions
  • one or more processors may be associated with executing a set of instructions of the software or algorithm to provide various functionalities according to embodiments described in this disclosure.
  • Software and computer programs include machine instructions for programmable processors and can be implemented in high-level procedural languages, object-oriented programming languages, functional programming languages, logic programming languages, assembly languages, or machine languages.
  • computer-readable medium means any computer program product, apparatus, or device used to provide machine instructions or data to a programmable data processor, such as magnetic disks, optical disks, solid-state storage devices, memories, and programmable logic devices (PLDs), including computer-readable media that receive machine instructions as computer-readable signals.
  • computer-readable media may include dynamic random access memory (DRAM), random access memory (RAM), read-only memory (ROM), electrically erasable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, or any other medium that can be used to carry or store required computer-readable program code in the form of instructions or data structures, and that can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor.
  • DRAM dynamic random access memory
  • RAM random access memory
  • ROM read-only memory
  • EEPROM electrically erasable read-only memory
  • CD-ROM compact disc read-only memory
  • magnetic disk storage devices or other magnetic storage devices or any other medium that can be used to carry or store required computer-readable program code in the form of instructions or data structures, and that can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor.
  • a disk or disc includes compact discs (CD), laser discs, optical discs, digital versatile discs (DVD), floppy disks, and Blu-ray discs, wherein a disk typically copies data magnetically, while a disc copies data optically using a laser. Combinations of the above are also included within the scope of computer-readable media.

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Abstract

本申请提供了用户设备、无线通信方法、装置、介质和程序产品，具体提供了一种用于无线通信的用户设备UE，包括：收发机，包括一个或两个接收天线端口；处理器，与收发机耦接，收发机和处理器被配置为使得UE：在提高轻量化RedCap UE对于上行链路信号的发送所支持的最大发射功率的情况下，对于下行链路信号的接收，满足经调整的参考灵敏度REFSENS要求，其中，UE的带宽配置支持第一最大工作带宽，经调整的REFSENS要求基于2RX REFSENS要求调整得到，第一最大工作带宽不大于2RX REFSENS要求所适用的工作带宽的最大值。

Description

用户设备、无线通信方法、装置、介质和程序产品
相关申请的交叉引用
本申请是以CN申请号为202410555513.2，申请日为2024年5月7日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开一般涉及无线通信技术，更具体涉及用于无线通信的用户设备、无线通信方法和装置、计算机可读存储介质和程序产品。
背景技术
第五代移动通信技术(5G)是新一代宽带移动通信技术，具有高速率、低时延和大连接的特点。新无线电(New Radio，NR，又称为“新空口”)是5G无线网的关键技术，最早由第3代合作伙伴计划(3GPP)在Rel-15标准中提出。国际电信联盟(ITU)的无线电通信部门(ITU-R)制定了5G的总体线路图“IMT-2020”，其中定义了5G的三大类应用场景，即增强移动宽带(Enhanced Mobile Broadband，eMBB)、超高可靠低时延通信(Ultra-Reliable and Low-Latency Communications，uRLLC)和海量机器类通信(Massive Machine Type Communications，mMTC)。eMBB主要针对超高传输数据速率、大覆盖下的移动通信保证。uRLLC主要面向对时延和可靠性有极高要求的垂直行业应用场景。mMTC主要面向大规模连接、低功耗、低数据速率、低成本的物联网(Internet of Things,IoT)应用场景。
然而，随着5G技术得以应用，人们意识到，针对这三大类应用场景的无线通信技术并不能很好解决一些中端物联网场景的需求。对于中端物联网场景，需要终端设备相比eMBB和uRLLC具有更低的复杂度和成本以及更小的设备尺寸，而相比先前的mMTC又能提供更好的连接性、更高的传输速率。在此背景下，轻量化(Reduced Capability，降低能力，简称“RedCap”)NR最早由3GPP在Rel-17标准研究过程中提出，最初称为NR-lite(NR-Light的简称)。采用5G RedCap技术的用户设备(User equipment，UE)相比常规5G NR UE具有降低的复杂性和更低的能耗，可以适用于一些物联网场景。
发明内容
根据本公开的一方面，提供了一种用于无线通信的用户设备UE，包括：收发机，包括一个或两个接收天线端口；处理器，与所述收发机耦接，所述收发机和所述处理器被配置为使得所述UE：在提高轻量化RedCap UE对于上行链路信号的发送所支持的最大发射功率的情况下，对于下行链路信号的接收，满足经调整的参考灵敏度(Reference Sensitivity，REFSENS)要求，其中，所述UE的带宽配置支持第一最大工作带宽，所述经调整的REFSENS要求基于两接收天线端口REFSENS要求调整得到，所述第一最大工作带宽不大于所述两接收天线端口REFSENS要求所适用的工作带宽的最大值。
根据本公开的另一方面，提供了一种无线通信方法，由用户设备UE执行，所述方法包括：采用第一功率等级PC要求发送上行链路信号，以提高轻量化RedCap UE所支持的最大发射功率，其中，所述UE包括一个或两个接收天线端口，并且，所述UE的带宽配置支持第一最大工作带宽，所述UE被配置为对于下行链路信号的接收满足经调整的参考灵敏度REFSENS要求，所述经调整的REFSENS要求基于两接收天线端口REFSENS要求调整得到，所述第一最大工作带宽不大于所述两接收天线端口REFSENS要求所适用的工作带宽的最大值。
根据本公开的另一方面，提供了一种用于无线通信的装置，应用于用户设备UE中，所述装置包括：发送单元，被配置为采用第一功率等级PC要求发送上行链路信号，以提高轻量化RedCap UE所支持的最大发射功率；以及接收单元，被配置为以满足经调整的参考灵敏度REFSENS要求的方式接收下行链路信号，其中，所述UE包括一个或两个接收天线端口，所述UE的带宽配置支持第一最大工作带宽，所述经调整的REFSENS要求基于两接收天线端口REFSENS要求调整得到，所述第一最大工作带宽不大于所述两接收天线端口REFSENS要求所适用的工作带宽的最大值。
根据本公开的另一方面，提供了一种计算机可读存储介质，其存储有用于进行无线通信的程序指令，该程序指令在由用户设备的处理器执行时，使得用户设备执行前文所述的用于无线通信的方法。
根据本公开的另一方面，提供了一种计算机程序产品，包括计算机可执行指令，所述计算机可执行指令在由用户设备UE的处理器执行时，使得所述UE执行前文所述的用于无线通信的方法。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得更为清楚。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1示出了根据本公开的实施例的用户设备UE的网络环境示意图。
图2示出了根据本公开的实施例的UE的组成示意图。
图3示出了上行链路发射功率的提升对下行链路造成干扰的示意图。
图4示出了根据本公开的实施例的用于无线通信的方法的流程图。
图5示出了根据本公开的实施例的用于无线通信的装置的组成示意图。
图6示出了可以用于实现根据本公开实施例的示例性电子设备。
为了便于理解，在附图等中所示的各结构的位置、尺寸及范围等有时不表示实际的位置、尺寸及范围等。因此，本公开并不限于附图等所公开的位置、尺寸及范围等。
具体实施方式
下面将参照附图来详细描述本公开的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本公开的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。也就是说，本文中的结构及方法是以示例性的方式示出以说明本公开中的结构和方法的不同实施例。然而，本领域技术人员将会理解，它们仅仅说明可以用来实施的本公开的示例性方式，而不是穷尽的方式。此外，附图不必按比例绘制，一些特征可能被放大以示出具体组件的细节。
在本公开中，诸如“第一”、“第二”的限定仅仅是为了便于区分，若非特别说明，不表示所描述的要素之间的次序。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
按照当前标准协议，RedCap UE所能使用的射频发射功率比较局限，例如在Rel-17标准中，只有频率范围1(FR1)的功率等级3(PC3)要求可被应用于RedCap UE，并且PC3要求定义的最大发射功率为23dBm。当前RedCap UE无法使用更高的最大发射功率。RedCap UE和非RedCap的5G NR UE(简称为“常规UE”)通常工作在同一网络中。即便提高了常规UE允许使用的最大发射功率，5G小区的小区覆盖范围仍然受限于功率等级受限的RedCap UE。而且，位于小区边缘的RedCap UE的数据传输速率将由于通信质量而降低。因此，为了扩展5G部署的小区覆盖范围或者提高小区边缘的RedCap UE的数据传输速率，需要对UE，特别是RedCap UE进行改进。
为解决上述问题中的至少一些，本公开的实施例提供改进的用于无线通信的UE、无线通信方法和装置、计算机可读存储介质或计算机程序产品，以便UE，特别是降低能力的UE，能够采用更高发射功率进行通信。
为了扩展5G部署的小区覆盖范围或者提高小区边缘的RedCap UE的数据传输速率，本公开的实施例提出让RedCap UE相比现有标准协议中对基线UE(例如，符合5G NR协议规范的UE和/或现有的RedCap UE)的要求以更大的最大发射功率来发送上行链路信号。然而，当提高上行链路信号的最大发射功率时，对于RedCap UE，其下行链路信号的接收可能无法满足针对基线UE所设定的参考灵敏度(Reference sensitivity，REFSENS)要求。因此，本公开的实施例还提出在提高RedCap UE的上行链路信号的最大发射功率的同时，对下行链路信号的接收应用调整后的REFSENS要求，以使得RedCap UE能够满足该调整后的REFSENS要求，从而能够通过可能的入网标准检验。
在本公开的下文中，若非特别指出，否则5G和NR可以互换使用。此外，应认识到，尽管结合5G技术中常用的术语描述了本公开的各个方面，但本公开的各个方面可以应用到5G以后的RAT(Radio Access，无线电接入)技术(例如，6G)。
图1示出了根据本公开的实施例的UE的网络环境的示意图。如图1所示，无线网络130可以是NR网络的一部分，或者可以包括NR网络的组成元件。无线网络130可以包括一个或多个基站(Base station,BS)200、一个或多个第一类UE 110(包括110a和110b，统称为“第一类UE 110”)和一个或多个第二类UE 100(包括100a和100b，统称为“第二类UE 100”)以及其它的网络元件(未示出)。BS 200是与UE进行通信的网络装置，在一些情况下也可以被称为节点B(NB)、eNB、gNB、接入点(Access Point，AP)或收发点(Transmission and Reception Point，TRP)等。每个BS可以为一定区域提供通信覆盖，该区域被称为小区(Cell)。无线网络130可以是由BS 200提供通信覆盖的一个小区，并且可以是宏小区(macro-cell)、微小区(micro-cell)、皮小区(pico-cell)或飞小区(femto-cell)中的任何一种。相应地，BS 200可以是宏基站、微基站、皮基站或飞基站中的一种。每个BS 200可以服务一个或多个小区。在小区覆盖范围较大(例如，小区半径为数千米)的情况下，BS 200还可以包括一个或多个中继BS(又称为中继站或者中继)。
第一类UE 110和第二类UE 100可以统称为UE。UE可以在无线网络130内分布。每个UE可以是移动的或静止的。UE和BS 200之间建立无线通信链路120(包括链路120a、120b、120c和120d)，其中从UE到BS 200的链路称为上行通信链路，从BS 200到UE的链路称为下行通信链路。UE又可以被称为接入终端、终端、移动站、订户单元等。UE可以是蜂窝通信电话(包括智能电话)、无线通信设备、手持设备、电脑、可穿戴设备、媒体设备、传感器设备、车辆装置等。
在无线网络130中，UE和BS 200之间通过无线电频谱进行通信。所使用的无线电频谱可以被划分成多个频率范围。例如，可使用的频率范围可以被分为频率范围(frequency range)1(FR1)和频率范围2(FR2)，其中FR1的频率范围是410MHz-7.125GHz，FR2的频率范围是24.25GHz-52.6GHz。由于FR1的频率主要位于6GHz以下，因此也被称为sub-6GHz频段。而FR2也被称为毫米波频段。应认识到，由于FR1和FR2所包括的频率范围可能被修改，本公开的内容可以适用于修改后的FR1和FR2。
UE所采用的功率等级(power class，PC)要求可以定义在一定信道带宽上的最大发射功率。在5G NR中，根据FR1和FR2频率范围，3GPP为这两个频率范围定义了各种UE功率等级。由于FR1和FR2的频率特性不同，PC要求的测量参数和指标也不同。在FR1频率范围内，使用电缆测量指定UE的功率等级，测量指标是最大输出功率。在FR2频率范围内，使用空中(OTA)测量来指定UE功率等级要求，测量指标包括：
●最大总辐射功率(Total Radiated Power，TRP)，它定义了在所有方向上辐射的总功率的上限。
●最大有效各向辐射功率(Effective Isotropic Radiated Power，EIRP)，这个限制用于满足法规要求，即确保设备不会传输可能导致健康间题或产生过多干扰的高功率。最大EIRP考虑设备可在一个特定方向上产生的最大天线增益。
●最小有效各向辐射功率(EIRP)，用于确保设备可在一个特定方向上的至少一个产生最小输出功率。
本公开的实施例关注FR1的功率等级要求。功率等级要求包括功率等级的级别、对应的最大发射功率值以及适应的频段。在一些实施例中，FR1的功率等级要求如下表1所示：

表1FR1中不同功率等级要求的功率值和频段分布
第一类UE 110在本文中被称作基线UE。基线UE是根据本公开实施例的UE的各种能力改变的参照。根据本公开实施例的UE被改变的不同能力可以以不同的基线UE的相应能力作为参照。
第二类UE 100是根据本公开实施例的UE。相比基线UE，其具有降低的能力，包括复杂度、成本和功耗等。
例如，在最大发射功率方面，第二类UE采用第一PC要求，该第一PC要求定义第一最大发射功率，而第一类UE采用的默认PC要求定义第二最大发射功率，第一最大发射功率大于第二最大发射功率。换言之，第二类UE所能采用的PC要求相比第一类UE的默认PC要求提升了最大发射功率。第一类UE可以是满足现有的5G NR通信协议标准的UE，包括常规UE和RedCap UE。例如，按照通信协议标准要求，在FR1中，UE(这里指常规UE)和RedCap UE的默认PC要求均为PC3要求，对应定义的最大发射功率为23dBm，如上表1所示。在本公开中，UE采用的“默认PC要求”是指该UE在通常情况下或者大多数情况下所采用的PC要求。默认PC要求并非排除UE采用其它的PC要求，而是意味着该PC要求相比其它PC要求存在更大的几率被选用。
替代或者附加地，第一最大发射功率大于RedCap UE所能采用的PC要求对应的最大发射功率。事实上，按照现有的5G NR通信协议标准，RedCap UE所能采用的PC要求只能是PC3要求，对应的最大发射功率为23dBm。第二类UE所采用的功率等级要求则定义了高于23dBm的最大发射功率。例如，第二类UE可以采用FR1中的PC2要求，并且PC2要求规定了26dBm的最大发射功率。下面的表2列出了第二类UE可以支持PC2要求的操作频带。
表2第二类UE可以支持PC2的操作频带
又例如，在接收天线端口方面，第二类UE具有一个或最多两个接收天线端口，而第一类UE具有两个以上的接收天线端口。例如，在FR1中，作为第一类UE的一种，5G NR UE在一些频段支持最小2天线端口同时用于接收，而在一些频段支持最小4天线端口同时用于接收。相应地，第一类UE用于下行链路信号接收的最大MIMO(Multiple Input Multiple Output，多输入多输出)层数为最小2层或者4层。在一些实施例中，第二类UE可以被限定为仅具有一个接收天线端口，这与第一类UE完全不同，因为后者被要求支持最小2个接收天线端口。第二类UE在所支持的各种频段内使用1个或者最多2个天线端口进行接收。由于接收天线端口数量减少，相应所需要的MIMO层数也减少为1层(针对1个接收天线端口)或者最多2层(针对2个接收天线端口)。
又例如，在工作带宽方面，第二类UE相比第一类UE具有相等或更小的最大工作带宽。本文中所述的UE具有或支持的最大工作带宽包括UE在所支持的工作频带(band)和子载波间隔(subcarrier spacing,SCS)下所能采用的最大UE信道带宽(channel bandwidth)。该最大UE信道带宽可以适用于UE的发射路径和/或接收路径。第二类UE的带宽配置支持第一最大工作带宽。第一类UE的带宽配置支持第二最大工作带宽，第一最大工作带宽不大于第二最大工作带宽。在一些实施例中，第一类UE是符合3GPP 5G NR标准协议规范(非RedCap部分)中的UE。例如第一类UE可以是针对eMBB应用场景的UE。在FR1中，该类别UE所支持的最大工作带宽为100MHz。相比之下，第二类UE所能支持的最大工作带宽小于第一类UE所支持的最大工作带宽，例如可以为20MHz。由此降低了对第二类UE的射频前端滤波器的要求，也降低了对基带处理能力的要求。在另一些实施例中，第一类UE是满足当前已有的5G NR通信协议标准的RedCap UE。在FR1中，该类别UE所支持的最大工作带宽为20MHz。相比之下，第二类UE所能支持的最大工作带宽可以与之相等，即也为20MHz。
在一些实施例中，第二类UE被限定为仅具有一个发射天线端口，由此降低了发射机的复杂度。相比之下，一些第一类UE，例如满足5G NR协议规范的常规UE，可以具有两个或更多个发射天线端口。
在一些实施例中，第二类UE被限定为除了按照TDD(Time Division Duplexing，时分复用)和FDD(Frequency Division Duplexing，频分复用)的全双工模式工作外，还可以采用HD-FDD(Half Duplex Frequency Division Duplexing，半双工频分复用)的模式工作，即可以在不同时间在不同频率上工作，由此可以省去FDD频段双工器，降低设备的尺寸，并节省成本。相比之下，一些第一类UE，例如满足5G NR协议规范的常规UE，并不支持HD-FDD模式。
在一些实施例中，第二类UE为调整后的RedCap UE。该调整后的RedCap UE是在现有的3GPP Rel-17标准或更早的标准所规定的RedCap UE基础上进一步满足下文关于功率等级的调整以及与功率等级调整相适应的其它调整。UE可以在向BS 200发送的能力报告中告知BS自身是否支持RedCap UE功能。
下表3示出了前文所介绍的第一类UE和第二类UE在配置上的区别。需认识到，表中所列出的配置区别并不需要同时存在，而是在有一些实施例中可以仅具有其中一个或多个配置项目上的区别。
表3第一类UE和第二类UE的配置比较
尽管图1中示出了在一个小区中同时存在第一类UE和第二类UE，但第一类UE的存在并非是必须的，而是在一些实施例中，可以没有第一类UE，而仅存在第二类UE。在一些实施例中，小区中除了第二类UE，还可能存在使用一些其它RAT技术(例如，2G、3G、4G技术)的UE。
下面将以调整后的RedCap UE作为根据本公开的实施例的第二类UE的示例来描述本公开的各个方面。但应认识，本公开的技术方案不局限于按照Rel-17标准及其后续标准所限定的RedCap UE或者是增强型轻量化(eRedCap)UE，而是可以适用于按照前文所述的方式对一种或多种配置进行了降低的各种UE。
图2示出了根据本公开的实施例的UE的组成示意图。该UE可以是图1中的UE 100a和100b的一种具体实现方式。
UE 100包括收发机102和处理器104。收发机102用于从处理器104接收控制或数据信号，并将该控制或数据信号向外发射，或者反过来，从外部接收信号，并通过解调解码等处理恢复出控制或数据信号，以发送给处理器104。收发机102可以包括接收天线端口106a和106b。尽管图中示出了两个接收天线端口，但是在一些实施例中也可以仅包括一个接收天线端口。或者，在一些情况下，尽管硬件上包括两个接收天线端口，UE也可以被配置为仅使用其中的一个接收天线端口用于接收。在一些实施例中，接收天线端口106a和106b可以包括相应的天线部件。天线部件可以是一个或多个天线面板、天线组、天线元件组和/或天线阵列。在另一些实施例中，接收天线端口106a和106b也可以不包括天线部件，而是提供接口以用于连接外部的天线部件。接收天线端口106a和106b中的一者或者两者也可以用作发送天线端口。天线端口是用于接收还是发送由射频前端(Radio Frequency Frontend，RFFE)中的双工器来切换。在一些实施例中，尽管两个接收天线端口106a和106b都可以用作发送天线端口，但UE被配置为仅使用其中一个进行发送，即UE可以被配置为具有1个发送天线端口和2个接收天线端口，或者1个发送天线端口和1个接收天线端口。
RFFE 108a和108b分别与天线端口106a和106b连接。RFFE 108a和108b主要包括滤波器(Filter)、功率放大器(Power Amplifier，PA)、射频开关(Switch/Tuner)和低噪声放大器(Low Noise Amplifier，LNA)中的一种或者多种。滤波器可以包括双工器、三工器等，可以用于发射通路和接收通路两者中。双工器由两个不同频率的带阻滤波器组成，因为频分复用(FDD)，接收和发射通道会同时运作，双工器用来防止发射信号和接收信号之间相互干扰。功率放大器主要应用于发射通路中，用于放大射频信号。UE所采用的功率等级影响功率放大器的工作参数。射频开关用于实现电路的切换，包括收发电路的切换和不同频段/天线的切换。低噪声放大器主要应用于接收通路中，用于放大接收信号。
调制解调器112a和112b分别与RFFE 108a和108b连接，用于对要发送的上行链路信号进行调制(例如数模转换、上变频等)，或者对接收到的下行链路信号进行解调(例如下变频、模数转换等)。当UE采用2个接收天线端口时，收发机102中还包括MIMO检测器114。MIMO检测器114连接在各路接收天线端口对应的调制解调器与接收处理器之间，用于将多路接收信号进行合并检测处理。接收处理器258可以解码所检测的信号，将解码后的信息提供给处理器104。发射处理器118从处理器104获得控制/数据信息，并进行编码处理。
处理器104的数量可以是一个或多个的组合。在一些实施例中，与图2中所示不同，接收处理器116和发射处理器118也可以作为处理器104的一部分。
UE的参考灵敏度REFSENS(又称为“参考灵敏度功率水平”)反映UE在低信号电平条件下，以给定的平均吞吐量接收指定参考测量信道的数据的能力，该能力以在一定平均吞吐量情况下UE的各天线端口的最小平均功率来表征。在运营商或入网认证的射频类测试中，UE的REFSENS需要满足一定的REFSENS要求。在UE 100的接收通路中，天线数量和性能、RFFE中滤波器、射频开关和低噪声放大器、解调解码方式以及是否使用MIMO接收，都会对UE 100的参考灵敏度产生影响。
但是，即便保持UE的接收通路配置不变，在一些情况下，改变上行链路发射功率也会造成下行接收REFSENS的变化。图3示出了上行链路发射功率的提升对下行链路造成干扰的示意图。如图3所示，当UE采用FDD方式时，由于上下行频带之间可能没有足够的频率间隔，导致上行频带中一些频率的高阶自调或互调分量会落在下行频带中，形成干扰。干扰的幅度受上行发射功率的影响。当上行发射功率变化时，干扰的幅度也相应发生变化，导致REFSENS发生变化，需要对原先确定的REFSENS要求进行调整。特别是在上行发射功率提升的情况下，干扰会更加显著，导致REFSENS发生劣化，无法满足原先确定的REFSENS要求。
为了解决上述问题，在本公开的实施例中，收发机102和处理器104被配置为使得UE 100在提高轻量化RedCap UE对于上行链路信号的发送所支持的最大发射功率的情况下，对于下行链路信号的接收，满足经调整的参考灵敏度REFSENS要求。该经调整的REFSENS要求基于两接收天线端口(2RX)REFSENS要求调整得到。第一最大工作带宽不大于2RX REFSENS要求所适用的工作带宽的最大值。
在一些实施例中，为了提高RedCap UE对于上行链路信号的发送所支持的最大发射功率，收发机102和处理器104被进一步配置为使得UE 100对于上行链路信号的发送，采用第一功率等级PC要求。第一PC要求定义第一最大发射功率，且第一最大发射功率大于用于RedCap UE的预设最大发射功率。用于RedCap UE的预设最大发射功率是人为事先约定的现有RedCap UE发送上行链路信号所允许使用的最大发射功率。在一些情况下，这可以通过约定RedCap UE所允许采用的默认PC要求来实现。具体来说，可以约定RedCap UE采用的默认PC要求，该默认PC要求定义了第二最大发射功率，则预设最大发射功率可以为该第二最大发射功率。例如，RedCap UE的默认PC要求为FR1下的PC3要求，对应定义的第二最大发射功率为23dBm，而根据本公开实施例，UE采用第一PC要求，且该第一PC要求定义的第一最大发射功率高于23dBm，例如可以采用FR1中的PC2要求，对应定义的第一最大发射功率例如可以是26dBm。根据本公开实施例的UE可以采用默认的第二最大发射功率，也可以采用提高后的第一最大发射功率，或者两者皆可，并根据具体使用场景进行切换。也就是说，相比默认情况下RedCap UE所支持的最大发射功率，根据本公开实施例的方法通过采用定义了更大的最大发射功率的第一PC要求来提高上行链路信号的最大发射功率。
2RX REFSENS要求是在UE具有2个接收天线端口情况下限定的REFSENS要求。该具有2个接收天线端口的UE可以是前文介绍的第一类UE，即基线UE。更进一步地，除了要求UE具有2个接收天线端口外，2RX REFSENS要求是在满足以下条件中的至少一者的情况下限定的：
●采用与本公开的实施例的RedCap UE同样的双工模式。相应地，2RX REFSENS要求和经调整的REFSENS要求都是在同样的双工模式下限定的。即，若RedCap UE工作于TDD模式、FDD模式或者HD-FDD模式中的一者，则2RX REFSENS要求也针对该模式。
●所适用的工作带宽的最大值大于或等于本公开的实施例的RedCap UE的带宽配置支持的最大工作带宽。如表4-6中所示，2RX REFSENS在不同频带所适用的工作带宽的最大值为50MHz、100MHz和20MHz。相比之下，本公开的实施例的RedCap UE的带宽配置支持的最大工作带宽为20MHz。
●所采用的功率等级要求定义的最大发射功率小于根据本公开的实施例的RedCap UE所采用的功率等级要求定义的最大发射功率。例如，要求UE采用默认的功率等级要求，该默认功率等级要求为FR1下定义的PC3要求。例如，表4-6中的2RX REFSENS要求是在功率等级要求为默认的PC3要求的情况下得到的。而根据本公开的实施例的RedCap UE采用的功率等级要求是FR1下定义的PC2要求。
2RX REFSENS要求可以是预先确定的。表4列出了FDD频带中的2RX REFSENS要求。

表4FDD频带中的2RX REFSENS要求
表5列出了TDD频带中的2RX REFSENS要求。


表5TDD频带中的2RX REFSENS要求
表6列出了采用HD-FDD模式的2RX REFSENS要求。

表6针对HD-FDD模式的2RX REFSENS要求
在一些实施例中，调整后的REFSENS要求是在2RX REFSENS基础上叠加调整量得到。因此，在确定2RX REFSENS要求后，可以进一步明确针对2RX REFSENS要求的调整量大小，以使得RedCap UE在上行链路发射功率提升后仍能满足调整后的REFSENS要求。
在一些实施例中，调整量大小与UE所操作的双工模式和UE所使用的接收天线端口数量两者有关。
当UE采用TDD或者HD-FDD模式时，由于上下行是分时进行的，上行链路的发射功率提升对下行链路的接收影响很小，因此，在这两种双工模式下，相对于2RX REFSENS要求的调整量可以为0。当UE采用FDD模式时，上行链路的发射功率提升对下行链路的接收产生影响，需要考虑对2RX REFSENS要求进行合适的调整。在调整量中，由带来最大发射功率提升的功率等级差异导致的调整量部分被称为参考灵敏度降级(Reference Sensitivity Degradation)。参考灵敏度降级的大小随着UE所操作的频带和被配置的上行信道带宽的不同而有所不同。
下表7示出了当RedCap UE(具有两个接收天线端口)支持PC2时的参考灵敏度降级。例如，当RedCap UE工作在n1频带时，最大信道带宽为20MHz的指定信道带宽的参考灵敏度降级要求为0dB。例如，当RedCap UE工作在n3频带时，最大信道带宽为20MHz的指定信道带宽的参考灵敏度降级要求为0.5dB。例如，当RedCap UE工作在n5频带(表中未示出)时，最大信道带宽为20MHz的指定信道带宽的参考灵敏度降级要求最大为1dB。例如，当RedCap UE工作在n8频带时，最大信道带宽为20MHz的指定信道带宽的参考灵敏度降级要求最大为2.3dB。
表7当RedCap UE(具有两个接收天线端口)支持PC2时的参考灵敏度降级
当UE采用两个接收天线端口时，相比2RX REFSENS要求的调整量为0。当UE采用一个接收天线端口时，调整量中由接收天线端口数量从两个减少为一个所导致的调整量部分被称为单接收天线端口参考灵敏度余量(ΔR1R)。
下表8示出了在TDD模式和FDD模式下，当RedCap UE采用一个接收天线端口时的ΔR1R。对于TDD频带，信道带宽变化时ΔR1R不变。对于FDD频带，ΔR1R取决于所述UE被配置的下行信道带宽。在上行和下行信道带宽对称的情况下，下行信道带宽与上行信道带宽相等。
表8当RedCap UE(支持PC3)采用一个接收天线端口时的ΔR1R
对于HD-FDD模式，当RedCap UE采用PC3和一个接收天线端口时，调整后的REFSENS要求如下表9所示。可以看到，在一些频带(例如n1、n3等)，相比表8，所对应的余量ΔR1R为2.5dB。

表9HD-FDD模式下RedCap采用一个接收天线端口的REFSENS要求
结合以上二者，当RedCap UE从PC3改变为PC2，且从采用两个接收天线端口减少为采用一个接收天线端口时，对于2RX REFSENS要求的调整量为参考灵敏度降级和ΔR1R之和。下表10示出了对于不同的RedCap UE在不同双工模式下的调整量的计算方法。
表10对于不同的RedCap UE在不同双工模式下的调整量
特别地，可以看到，在FDD模式下，当RedCap UE采用PC2和一个接收天线端口时，调整量为表7和表8之和，如下表11所示。
表11采用PC2和一个接收天线端口的RedCap UE在FDD模式下的调整量
根据本公开的实施例的优点之一在于，提高降低能力的UE的上行链路信号的最大发射功率，以扩展5G部署的小区覆盖范围或者提高小区边缘的该类UE的数据传输速率，同时对下行链路信号的接收应用调整后的REFSENS要求，以使得该UE能够满足该调整后的REFSENS要求，从而能够通过可能的入网标准检验。
应当认识到，上述优点不需全部集中在一个或一些特定实施例中实现，而是可以部分分散在根据本公开的不同实施例中。根据本公开的实施例可以具有上述优点中的一个或一些，也可以替代地或者附加地具有其它的优点。
图4示出了根据本公开的一些实施例的无线通信方法的流程图。方法400可以由根据本公开实施例的UE(例如前文介绍的第二类UE)执行。方法400包括步骤402，其中根据本公开实施例的UE采用第一功率等级PC要求发送上行链路信号，以提高RedCap UE所支持的最大发射功率。该UE包括一个或两个接收天线端口。该UE的带宽配置支持第一最大工作带宽。UE还被配置为对于下行链路信号的接收满足经调整的REFSENS要求。该经调整的REFSENS要求基于两接收天线端口(2RX)REFSENS要求调整得到。第一最大工作带宽不大于2RX REFSENS要求所适用的工作带宽的最大值。
在一些实施例中，采用第一PC要求发送上行链路信号，以提高RedCap UE所支持的最大发射功率可以通过如下方式来实现：第一PC要求定义第一最大发射功率，且该第一最大发射功率大于用于RedCap UE的预设最大发射功率。
关于该方法的更多细节，特别是有关PC要求、2RX REFSENS要求以及如何得到经调整的REFSENS要求已在前文具体介绍，在此不做赘述。
图5示出了根据本公开实施例的用于无线通信的装置。装置500可以应用于UE中，例如可以应用于如图1所示的第二类UE中。在一些实施例中，该UE包括一个或两个接收天线端口。该UE的带宽配置支持第一最大工作带宽。在一些实施例中，该UE为5G RedCap UE或5G eRedCap UE。
装置500包括发送单元502和接收单元504。发送单元502被配置为采用第一PC要求发送上行链路信号，以提高轻量化RedCap UE所支持的最大发射功率。接收单元504被配置为以满足经调整的REFSENS要求的方式接收下行链路信号。经调整的REFSENS要求基于2RX REFSENS要求调整得到的。第一最大工作带宽不大于2RX REFSENS要求所适用的工作带宽的最大值。
关于该装置的更多细节，特别是有关PC要求、2RX REFSENS要求以及如何得到经调整的REFSENS要求已在前文具体介绍，在此不做赘述。
图6示出了可以用于实现根据本公开实施例的方法的示例性电子设备。根据本公开实施例的RedCap UE可以实现为这样的电子设备。如图6所示，电子设备600可以包括一个或多个处理器602。一个或多个处理器602可以是任何种类的处理器，并且可以包括但不限于一个或多个通用处理器或专用处理器(诸如专用处理芯片)。处理器602可以执行指令以实现前面描述的用于无线通信的方法。一个或多个处理器602可以包括图2所示的处理器104。
电子设备600还可以包括或被连接至非暂态存储设备604，该非暂态存储设备604可以是任何非暂态的并且可以实现数据存储的存储设备，并且可以包括但不限于盘驱动器、光存储设备、固态存储器、软盘、柔性盘、硬盘、磁带或任何其他磁性介质、压缩盘或任何其他光学介质、缓存存储器和/或任何其他存储芯片或模块、和/或计算机可以从其中读取数据、指令和/或代码的其他任何介质。非暂态存储设备604可以存储供处理器602读取和/或执行的各种动态和静态指令和/或数据，以实现前文所述的用于无线通信的方法。
处理器602和/或存储设备604可以经由一个或多个接口与总线606连接或通信。总线606可以包括但不限于，工业标准架构(Industry Standard Architecture，ISA)总线、微通道架构(Micro Channel Architecture，MCA)总线、增强ISA(EISA)总线、视频电子标准协会(VESA)局部总线、以及PCI总线或PCI-e总线等。
I/O设备608可以是能够与电子设备600交互的任何外部设备。I/O设备608的示例可以包括但不限于键盘、触控板、鼠标、操纵杆或其它指示设备、麦克风、扬声器、显示器或打印机等。
电子设备600还可包括网络接口610。网络接口610可以是能够启用与外部装置和/或网络通信的任何种类的设备或系统，并且可以包括但不限于调制解调器、网络卡、红外线通信设备、无线通信设备和/或芯片集(诸如蓝牙设备、WiFi设备、WiMax设备、蜂窝通信设施等)。
I/O设备608和/或网络接口610也可以经由总线606与处理器602和/或存储设备604通信地耦合。
本公开可以被实现为装置、系统、集成电路和非瞬时性计算机可读介质或计算机程序产品上的计算机程序的任何组合。可以将一个或多个处理器实现为执行本公开中描述的部分或全部功能的集成电路(IC)、专用集成电路(ASIC)或大规模集成电路(LSI)、系统LSI，超级LSI或超LSI组件。
本公开包括软件、应用程序、计算机程序或算法的使用。可以将软件、应用程序、计算机程序或算法存储在非瞬时性计算机可读介质或计算机程序产品上，以使诸如一个或多个处理器的计算机执行上述步骤和附图中描述的步骤。例如，一个或多个存储器以可执行指令存储软件或算法，并且一个或多个处理器可以关联执行该软件或算法的一组指令，以根据本公开中描述的实施例提供各种功能。
软件和计算机程序(也可以称为程序、软件应用程序、应用程序、组件或代码)包括用于可编程处理器的机器指令，并且可以以高级过程性语言、面向对象编程语言、功能性编程语言、逻辑编程语言或汇编语言或机器语言来实现。术语“计算机可读介质”是指用于向可编程数据处理器提供机器指令或数据的任何计算机程序产品、装置或设备，例如磁盘、光盘、固态存储设备、存储器和可编程逻辑设备(PLD)，包括将机器指令作为计算机可读信号来接收的计算机可读介质。
举例来说，计算机可读介质可以包括动态随机存取存储器(DRAM)、随机存取存储器(RAM)、只读存储器(ROM)、电可擦只读存储器(EEPROM)、紧凑盘只读存储器(CD-ROM)或其他光盘存储设备、磁盘存储设备或其他磁性存储设备，或可以用于以指令或数据结构的形式携带或存储所需的计算机可读程序代码以及能够被通用或专用计算机或通用或专用处理器访问的任何其它介质。如本文中所使用的，磁盘或盘包括紧凑盘(CD)、激光盘、光盘、数字多功能盘(DVD)、软盘和蓝光盘，其中磁盘通常以磁性方式复制数据，而盘则通过激光以光学方式复制数据。上述的组合也包括在计算机可读介质的范围内。
提供本公开的主题作为用于执行本公开中描述的特征的装置、系统、方法和程序的示例。但是，除了上述特征之外，还可以预期其他特征或变型。可以预期的是，可以用可能代替任何上述实现的技术的任何新出现的技术来完成本公开的部件和功能的实现。
另外，以上描述提供了示例，而不限制权利要求中阐述的范围、适用性或配置。在不脱离本公开的精神和范围的情况下，可以对所讨论的元件的功能和布置进行改变。各种实施例可以适当地省略、替代或添加各种过程或部件。例如，关于某些实施例描述的特征可以在其他实施例中被结合。
类似地，虽然在附图中以特定次序描绘了操作，但是这不应该被理解为要求以所示的特定次序或者以顺序次序执行这样的操作，或者要求执行所有图示的操作以实现所希望的结果。在某些情况下，多任务处理和并行处理可以是有利的。

Claims (21)

  1. 一种用于无线通信的用户设备UE，包括：
    收发机，包括一个或两个接收天线端口；
    处理器，与所述收发机耦接，所述收发机和所述处理器被配置为使得所述UE：
    在提高轻量化RedCap UE对于上行链路信号的发送所支持的最大发射功率的情况下，对于下行链路信号的接收，满足经调整的参考灵敏度REFSENS要求，
    其中，所述UE的带宽配置支持第一最大工作带宽，
    所述经调整的REFSENS要求基于两接收天线端口参考灵敏度2RX REFSENS要求调整得到，所述第一最大工作带宽不大于所述2RX REFSENS要求所适用的工作带宽的最大值。
  2. 根据权利要求1所述的UE，其中，所述UE为轻量化RedCap UE或增强型轻量化eRedCap UE。
  3. 根据权利要求1或2所述的UE，其中，所述收发机和所述处理器还被配置为使得所述UE：
    对于上行链路信号的发送，采用第一功率等级PC要求，其中，所述第一PC要求定义第一最大发射功率，所述第一最大发射功率大于用于所述RedCap UE的预设最大发射功率。
  4. 根据权利要求3所述的UE，其中，所述预设最大发射功率为所述RedCap UE采用的默认PC要求所定义的第二最大发射功率。
  5. 根据权利要求1-4中任一项所述的UE，其中，所述经调整的REFSENS要求在所述2RX REFSENS要求之上叠加调整量得到，所述调整量的大小至少取决于以下项：
    所述UE所操作的双工模式；和
    所述UE所使用的接收天线端口数量。
  6. 根据权利要求5所述的UE，其中，在所述UE所操作的双工模式为频分双工FDD，并且所述UE所使用的接收天线端口数量为一个的情况下，所述调整量为单接收天线端口参考灵敏度余量ΔR1R与由功率等级差异导致的参考灵敏度降级之和。
  7. 根据权利要求6所述的UE，其中，所述ΔR1R取决于所述UE被配置的下行信道带宽。
  8. 根据权利要求6所述的UE，其中，所述参考灵敏度降级取决于所述UE所操作的频带和被配置的上行信道带宽。
  9. 根据权利要求1-8中任一项所述的UE，其中所述第一PC要求为5G频率范围FR1内定义的PC2要求，所述默认PC要求为FR1内定义的PC3要求。
  10. 一种无线通信方法，由用户设备UE执行，所述方法包括：
    采用第一功率等级PC要求发送上行链路信号，以提高轻量化RedCap UE所支持的最大发射功率，
    其中，所述UE包括一个或两个接收天线端口，并且，所述UE的带宽配置支持第一最大工作带宽，
    其中，所述UE被配置为对于下行链路信号的接收满足经调整的参考灵敏度REFSENS要求，
    其中，所述经调整的REFSENS要求基于两接收天线端口参考灵敏度2RX REFSENS要求调整得到，所述第一最大工作带宽不大于所述2RX REFSENS要求所适用的工作带宽的最大值。
  11. 根据权利要求10所述的方法，其中，所述UE为轻量化RedCap UE或增强型轻量化eRedCap UE。
  12. 根据权利要求10或11所述的方法，其中，所述第一PC要求定义第一最大发射功率，所述第一最大发射功率大于用于所述RedCap UE的预设最大发射功率。
  13. 根据权利要求12所述的方法，其中，所述预设最大发射功率为所述RedCap UE采用的默认PC要求所定义的第二最大发射功率。
  14. 根据权利要求10-13中任一项所述的方法，其中，所述经调整的REFSENS要求在所述2RX REFSENS要求之上叠加调整量得到，所述调整量的大小至少取决于以下项：
    所述UE所操作的双工模式；和
    所述UE所使用的接收天线端口数量。
  15. 根据权利要求14所述的方法，其中，在所述UE所操作的双工模式为频分双工FDD，并且所述UE所使用的接收天线端口数量为一个的情况下，所述调整量为单接收天线端口参考灵敏度度量ΔR1R与由功率等级差异导致的参考灵敏度降级之和。
  16. 根据权利要求15所述的方法，其中，所述ΔR1R取决于所述UE被配置的下行信道带宽。
  17. 根据权利要求15所述的UE，其中，所述参考灵敏度降级取决于所述UE所操作的频带和被配置的上行信道带宽。
  18. 根据权利要求10-17中任一项所述的方法，其中所述第一PC要求为5G频率范围FR1内定义的PC2要求，所述默认PC要求为FR1内定义的PC3要求。
  19. 一种计算机可读存储介质，存储有用于进行无线通信的程序指令，所述程序指令在由用户设备UE的处理器执行时，使得所述UE执行根据权利要求10-18中任一项所述的方法。
  20. 一种计算机程序产品，包括计算机可执行指令，所述计算机可执行指令在由用户设备UE的处理器执行时，使得所述UE执行根据权利要求10-18中的任一项所述的方法。
  21. 一种用于无线通信的装置，应用于用户设备UE中，所述装置包括：
    发送单元，被配置为采用第一功率等级PC要求发送上行链路信号，以提高轻量化RedCap UE所支持的最大发射功率；以及
    接收单元，被配置为以满足经调整的参考灵敏度REFSENS要求的方式接收下行链路信号，
    其中，所述UE包括一个或两个接收天线端口，
    所述UE的带宽配置支持第一最大工作带宽，
    所述经调整的REFSENS要求基于两接收天线端口参考灵敏度2RX REFSENS要求调整得到，所述第一最大工作带宽不大于所述2RX REFSENS要求所适用的工作带宽的最大值。
PCT/CN2024/144212 2024-05-07 2024-12-31 用户设备、无线通信方法、装置、介质和程序产品 Pending WO2025232247A1 (zh)

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