WO2022078287A1 - 由用户设备执行的方法以及用户设备 - Google Patents

由用户设备执行的方法以及用户设备 Download PDF

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Publication number
WO2022078287A1
WO2022078287A1 PCT/CN2021/123051 CN2021123051W WO2022078287A1 WO 2022078287 A1 WO2022078287 A1 WO 2022078287A1 CN 2021123051 W CN2021123051 W CN 2021123051W WO 2022078287 A1 WO2022078287 A1 WO 2022078287A1
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Prior art keywords
reference signal
configuration information
information related
user equipment
timer
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PCT/CN2021/123051
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English (en)
French (fr)
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刘蕾
刘仁茂
罗超
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夏普株式会社
刘蕾
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Publication of WO2022078287A1 publication Critical patent/WO2022078287A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Definitions

  • the present invention relates to the technical field of wireless communication, and more particularly, the present invention relates to a method for performing relaxed wireless resource measurement by a user equipment and a corresponding user equipment.
  • the CSI-RS (CSI reference signal) downlink channel state information reference signal is sent by the base station, and the terminal can receive this reference signal for time-frequency tracking and measurement in the RRC connected state.
  • the configuration of CSI-RS can be periodic transmission, semi-persistent transmission and aperiodic transmission.
  • TRS Track Reference Signal
  • TRS Track Reference Signal
  • the UE in the RRC idle state and the inactive state, the UE needs to monitor the PO to detect whether it has its own paging message. In order to be able to receive paging, the UE needs to wake up before the PO time and receive the SSB first for synchronization. In the case of poor radio resource environment, the UE may need to receive multiple SSBs before it can complete synchronization, so the UE has to wake up earlier.
  • the work item of Power Saving Enhancement for Release 17 by sharing the TRS/CSI-RS opportunities that are only used in the connected state in the prior art to the UEs in the idle and inactive states, the UE can pass the TRS/CSI-RS to perform time-frequency tracking, so as to complete the synchronization more quickly.
  • the UE can receive paging without waking up prematurely, thereby achieving the goal of energy saving.
  • the CSI-RS in the connected state may also be shared with the UEs in the idle state and the inactive state for measurement in the idle state and the inactive state.
  • the present invention discusses issues related to CSI-RS configuration in achieving the above research objectives.
  • the present invention provides a method performed by user equipment and user equipment.
  • UEs in idle state and inactive state can perform time-frequency tracking through TRS/CSI-RS, so as to achieve faster The synchronization is completed, and the CSI-RS in the connected state may also be shared with the UEs in the idle state and the inactive state for measurement in the idle state and the inactive state.
  • a method performed by a user equipment UE comprising: acquiring configuration information related to a first reference signal; saving the acquired configuration information related to the first reference signal;
  • the resource control RRC connected state enters the idle state or the inactive state, the first timer is started; and when the first timer stops or times out, the saved configuration information related to the first reference signal is deleted.
  • the configuration information related to the first reference signal includes one or more of the following: valid duration information of the configuration information; frequency domain information of the first reference signal; and time domain information of the first reference signal information.
  • the first timer is stopped when at least one of the following events occurs: receiving an RRC setup message; receiving an RRC restart message; receiving an RRC release message carrying configuration information related to the first reference signal; And when cell reselection occurs, and the newly selected cell is not within the valid area of the system message.
  • the first timer is stopped first, and then the first timer is stopped according to the configuration information related to the first reference signal included in the RRC release message.
  • the configuration restarts the first timer.
  • the stored configuration information related to the first reference signal is obtained through RRC dedicated signaling, the stored configuration information related to the first reference signal is deleted.
  • Configuration information if there is configuration information related to the first reference signal in the system message, the configuration information related to the first reference signal in the system message is used.
  • a method performed by a user equipment UE comprising: acquiring configuration information related to a first reference signal; saving the acquired configuration information related to the first reference signal; In the first downlink control information DCI including the first indication information indicating whether the first reference signal is transmitted or whether the first reference signal configuration is valid, after receiving the first DCI, the stored and the first reference signal are deleted. Configuration information related to a reference signal.
  • a method performed by a user equipment UE including: acquiring configuration information related to a first reference signal; and determining a bandwidth segment BWP where the first reference signal is located.
  • a method performed by a user equipment UE including: acquiring configuration information related to a first reference signal; and determining a subcarrier interval SCS where the first reference signal is located.
  • a method performed by a user equipment UE comprising: acquiring configuration information related to a first reference signal; and determining a starting resource of the first reference signal according to the first reference frequency domain location yuan.
  • a user equipment comprising: a processor; and a memory storing instructions; wherein the instructions execute the above-mentioned method when executed by the processor.
  • UEs in idle state and inactive state can perform time-frequency tracking through TRS/CSI-RS, so as to complete synchronization more quickly, and CSI-RS in connected state may also be shared with idle state and inactive state.
  • the UE is used for measurement in idle state and inactive state.
  • FIG. 1 is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present invention.
  • FIG. 2 is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present invention.
  • FIG. 3 is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present invention.
  • FIG. 4 is a flowchart illustrating a method performed by a user equipment according to Embodiment 4 of the present invention.
  • FIG. 5 is a flowchart illustrating a method performed by a user equipment according to Embodiment 5 of the present invention.
  • FIG. 6 is a block diagram schematically illustrating a user equipment involved in the present invention.
  • UE User Equipment user equipment
  • RRC Radio Resource Control Radio Resource Control
  • RRC_IDLE RRC idle state
  • Radio Access Network Radio Access Layer
  • PDCCH Physical downlink control channel, physical downlink control channel
  • BWP Bandwidth Part, bandwidth fragment
  • CORESET control-resource set, control resource set
  • DCI Downlink Control Information, downlink control information
  • MIB Master Information Block, the main information block
  • PBCH Physical Broadcast Channel, physical broadcast channel
  • PDCCH Physical Downlink Control Channel, physical downlink control channel
  • PRB Physical Resource Block, physical resource block
  • PSS Primary Synchronization Signal, the main synchronization signal
  • RB Resource Block, resource block
  • SCS Subcarrier Spacing, subcarrier spacing
  • SIB System Information Block, system information block
  • SSB SS/PBCH block, synchronization signal/physical broadcast channel block
  • CSI Channel-state information, channel state information
  • CSI-RS CSI reference signal, channel state information reference signal
  • DCI Downlink Control Information, downlink control information
  • CD-SSB Cell-Defining SSB, cell-defining SSB
  • network, base station and RAN can be used interchangeably, and the network can be a long-term evolution LET network, a new radio access technology (New RAT, NR) network, an enhanced long-term evolution eLTE network, or a 3GPP subsequent evolution version other networks as defined in .
  • New RAT new radio access technology
  • eLTE enhanced long-term evolution eLTE network
  • 3GPP subsequent evolution version other networks as defined in .
  • the user equipment UE may refer to the NR device with reduced capability described in the background art, or may refer to other types of NR devices or LTE devices.
  • Stationary equipment includes equipment that is stationary at all times, equipment that is stationary for a period of time, and equipment that moves at very low speeds.
  • the UE in the RRC idle state and the inactive state, the UE needs to monitor the PO to detect whether it has its own paging message. In order to be able to receive paging, the UE needs to wake up before the PO time and receive the SSB first for synchronization. In the case of poor radio resource environment, the UE may need to receive multiple SSBs before it can complete synchronization, so the UE has to wake up earlier.
  • the work item of Power Saving Enhancement for Release 17 by sharing the TRS/CSI-RS opportunities that are only used in the connected state in the prior art to the UEs in the idle and inactive states, the UE can pass the TRS/CSI-RS to perform time-frequency tracking, so as to complete the synchronization more quickly.
  • the UE can receive paging without waking up prematurely, thereby achieving the goal of energy saving.
  • the CSI-RS in the connected state may also be shared with the UEs in the idle state and the inactive state for measurement in the idle state and the inactive state.
  • TRS/CSI-RS for idle and inactive states can be configured through RRC-specific signaling and/or system messages.
  • RRC dedicated signaling is used to configure UE-level configuration
  • system messages are used to configure cell-level configuration.
  • the configuration of TRS/CSI-RS should include at least the time information and frequency information of the signal.
  • the frequency domain resources occupied by the CSI-RS may be an integer multiple of 4 resource blocks.
  • FIG. 1 is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present invention.
  • the steps performed by the user equipment UE include: step 101 , step 103 , step 105 , and step 107 .
  • step 101 configuration information related to the first reference signal is acquired.
  • the first reference signal is TRS.
  • the first reference signal is a CSI-RS.
  • configuration information related to the first reference signal by receiving a configuration message sent by the base station, where the configuration message may be one or more of the following:
  • the configuration message is RRC-specific signaling (eg, RRCRelease message).
  • the configuration message is a system message.
  • Obtaining configuration information related to the first reference signal is used to detect the first reference signal under one or more of the following conditions:
  • the configuration information related to the first reference signal includes time-frequency information and control information required by the UE to detect the first reference signal, including one or more of the following:
  • step 103 configuration information related to the first reference signal is saved.
  • a first timer is started.
  • start the timer when entering the idle state from the RRC connected state for example, receiving an RRCRelease message without suspend information
  • the timer is started when entering the inactive state from the RRC connected state (for example, receiving an RRCRelease message carrying suspend information).
  • step 107 if the first timer is running, the first timer is stopped.
  • step 107 when the configuration information related to the first reference signal is carried in the RRCRelease message, if the first timer is running, the first timer is stopped first, and then restarted according to the configuration of the first reference signal in the RRCRelease message first timer.
  • the first timer stops or times out processing:
  • FIG. 2 is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present invention.
  • the steps performed by the user equipment UE include: step 201 , step 203 and step 205 .
  • step 201 is the same as step 101
  • step 203 is the same as step 103 .
  • the UE detects the first DCI, the first DCI includes first indication information, and the first indication information may include one or more of the following:
  • the first indication information indicates whether the first reference signal is actually transmitted.
  • the first indication information indicates whether the first reference signal configuration is valid.
  • the MAC layer After receiving the first DCI containing the first indication information, the MAC layer notifies the RRC layer. After receiving the notification from the MAC, the RRC layer deletes the saved configuration related to the first reference signal for the idle state and the inactive state.
  • FIG. 3 is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present invention.
  • the steps performed by the user equipment UE include: step 301 and step 303.
  • Step 301 is the same as step 101 .
  • step 303 one or more parameters of the BWP (eg, referred to as the first BWP) in which the first reference signal is located are determined.
  • the first BWP is an initial downlink BWP of the UE.
  • the BWP ID of the first BWP is a predefined value (eg, 0).
  • the UE ignores the BWP ID in the configuration information.
  • the UE always assumes that the BWP ID corresponding to the first BWP is equal to 0.
  • the UE ignores the BWP ID in the configuration information.
  • the UE applies the BWP ID in the configuration information.
  • the SCS of the first BWP is equal to one or more of the following:
  • parameter subCarrierSpacingCommon eg parameter subCarrierSpacingCommon in MIB.
  • the SSB may refer to a CD-SSB (cell-defined SSB), and the cell is the cell where the current UE resides.
  • CD-SSB cell-defined SSB
  • FIG. 4 is a flowchart illustrating a method performed by a user equipment according to Embodiment 4 of the present invention.
  • the steps performed by the user equipment UE include: step 401 and step 403 .
  • Step 401 is the same as 101.
  • step 403 the SCS where the first reference signal is located is directly determined without relying on the first BWP.
  • parameter subCarrierSpacingCommon eg parameter subCarrierSpacingCommon in MIB.
  • FIG. 5 is a flowchart illustrating a method performed by a user equipment according to Embodiment 5 of the present invention.
  • the steps performed by the user equipment UE include: step 501 and step 503 .
  • Step 501 is the same as step 101 .
  • a starting resource block of the first reference signal (for example, denoted as p) is determined.
  • p is the resource block number relative to common resource block 0.
  • p is a resource block number relative to a starting resource block of the first BWP.
  • n is the resource block number relative to common resource block 0.
  • n is a resource block number relative to a starting resource block of the first BWP.
  • n is a resource block number relative to the end resource block of the first BWP.
  • n is a resource block number relative to the central resource block of the first BWP.
  • n is the starting resource block of CORESET 0.
  • n is the end resource block of CORESET 0.
  • n is the central resource block of CORESET 0.
  • n is the starting resource block of the SSB.
  • n is the end resource block of the SSB.
  • n is the central resource block of the SSB.
  • the offset is offset from the first reference frequency domain position by several resource blocks.
  • the offset is offset from the first reference frequency domain position by several subcarriers.
  • n is the start, end or central resource block of the SSB
  • the SSB can refer to CD-SSB or other SSBs.
  • the start, end, or center resource block of an SSB may be aligned to SCS boundaries instead of resource block boundaries. Then, determining the starting resource block of the first reference signal may be based on, for example:
  • ssb-SubcarrierOffset is carried in the MIB and corresponds to k SSB , and represents the offset value in the order of SCS between the SSB and the resource block grid of the entire carrier.
  • offset refers to a number of subcarriers offset from the first reference frequency domain position
  • the starting resource block of the first reference signal is determined according to, for example: Another example,
  • the first reference signal may be different from the subcarrier bandwidth of the first reference frequency domain location.
  • n is the start, end or center resource block of SSB
  • SSB can refer to CD-SSB or other SSB
  • the start, end or center resource block of SSB may be aligned to SCS boundary instead of resource block boundary, such as:
  • Another example Another example, Another example,
  • FIG. 6 is used to illustrate a user equipment that can execute the method performed by the user equipment described in detail above in the present invention as a modification.
  • FIG. 6 is a block diagram showing a user equipment UE according to the present invention.
  • the user equipment UE60 includes a processor 601 and a memory 602 .
  • the processor 601 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like.
  • the memory 602 may include, for example, volatile memory (eg, random access memory RAM), a hard disk drive (HDD), non-volatile memory (eg, flash memory), or other memory, or the like.
  • the memory 602 has program instructions stored thereon. When the instruction is executed by the processor 601, the above method described in detail in the present invention and executed by the user equipment can be executed.
  • a program running on a device may be a program that causes a computer to implement the functions of the embodiments of the present invention by controlling a central processing unit (CPU).
  • the program or information processed by the program may be temporarily stored in volatile memory (eg, random access memory RAM), a hard disk drive (HDD), non-volatile memory (eg, flash memory), or other memory systems.
  • a program for realizing the functions of the embodiments of the present invention can be recorded on a computer-readable recording medium.
  • the corresponding functions can be realized by causing a computer system to read programs recorded on the recording medium and execute the programs.
  • the so-called "computer system” here may be a computer system embedded in the device, and may include an operating system or hardware (eg, peripheral devices).
  • the "computer-readable recording medium” may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium that dynamically stores a program for a short period of time, or any other recording medium readable by a computer.
  • circuits eg, monolithic or multi-chip integrated circuits.
  • Circuits designed to perform the functions described in this specification may include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above.
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGAs field programmable gate arrays
  • a general-purpose processor may be a microprocessor or any existing processor, controller, microcontroller, or state machine.
  • the above circuit may be a digital circuit or an analog circuit. In the event that new integrated circuit technologies emerge as a result of advances in semiconductor technology that replace existing integrated circuits, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.
  • the present invention is not limited to the above-described embodiments. Although various examples of the described embodiments have been described, the invention is not limited thereto.
  • Fixed or non-mobile electronic equipment installed indoors or outdoors can be used as terminal equipment or communication equipment, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

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Abstract

根据本发明，提出了一种由用户设备UE执行的方法，包括：获取与第一参考信号有关的配置信息；保存获取的所述与第一参考信号有关的配置信息；当所述UE从无线资源控制RRC连接态进入空闲态或非激活态时，启动第一定时器；以及当第一定时器停止或超时时，删除保存的所述与第一参考信号有关的配置信息。

Description

由用户设备执行的方法以及用户设备 技术领域
本发明涉及无线通信技术领域，更具体地，本发明涉及由用户设备执行放松无线资源测量的方法以及相应的用户设备。
背景技术
在NR中，CSI-RS(CSI reference signal)下行信道状态信息参考信号是基站发送的，终端可以接收这种参考信号，用于RRC连接态的时频跟踪、测量等。CSI-RS的配置可以是周期性发送、半持续发送和非周期性发送。TRS(Tracking Reference Signal)是用于跟踪参考信号的一种CSI-RS。
2019年12月，在第三代合作伙伴计划(3rd Generation Partnership Project：3GPP)RAN#86次全会上，针对版本17的节省功率增强的工作项目(参见非专利文献：RP-193239 New WID：UE Power Saving Enhancements)，并获批准。该工作项目的最新版本参见非专利文献：RP-200938 Revised WID_UE Power Saving Enhancements for NR_Change。该工作项目主要研究RRC空闲态和RRC非激活态下终端如何节省功率。该工作项目的目标之一是将用于连接态的TRS/CSI-RS时机共享给空闲态和非激活态的UE。
在现有技术中，RRC空闲态和非激活态下，UE需要监听PO来检测是否有自己的寻呼消息。为了能够接收寻呼，UE需要在PO时刻之前醒来，先接收SSB来进行同步。在无线资源环境比较差的情况下，UE可能需要接收多个SSB后才能够完成同步，这样UE就不得不提前较多时间醒来。在针对版本17的节省功率增强的工作项目中，通过将现有技术中仅用于连接态的TRS/CSI-RS时机共享给空闲态和非激活态的UE，UE可以通过TRS/CSI-RS来进行时频跟踪，从而更快速的完成同步。通过这种方式，相对于现有技术UE就可以不用过早的醒来而接收寻呼，从而达到节能的目标。同时连接态的CSI-RS也可能被共享给空闲态和非激活态的UE用于空闲态 和非激活态下的测量。
本发明讨论达成上述研究目标中的CSI-RS配置的相关问题。
发明内容
为了解决上述问题中的至少一部分，本发明提供了一种由用户设备执行的方法以及用户设备，空闲态和非激活态的UE可以通过TRS/CSI-RS来进行时频跟踪，从而更快速的完成同步，同时连接态的CSI-RS也可能被共享给空闲态和非激活态的UE用于空闲态和非激活态下的测量。
根据本发明，提出了一种由用户设备UE执行的方法，包括：获取与第一参考信号有关的配置信息；保存获取的所述与第一参考信号有关的配置信息；当所述UE从无线资源控制RRC连接态进入空闲态或非激活态时，启动第一定时器；以及当第一定时器停止或超时时，删除保存的所述与第一参考信号有关的配置信息。
优选地，所述与第一参考信号有关的配置信息包括如下一项或多项：配置信息的有效时长信息；所述第一参考信号的频域信息；以及所述第一参考信号的时域信息。
优选地，当发生以下事件中的至少一个时停止所述第一定时器：收到RRC建立消息；收到RRC重启消息；收到携带了与第一参考信号有关的配置信息的RRC释放消息；以及当发生小区重选，并且新选择的小区不在系统消息的有效区域内。
优选地，当收到携带了与第一参考信号有关的配置信息的RRC释放消息时，先停止所述第一定时器，然后根据RRC释放消息中包括的与第一参考信号有关的配置信息来配置重启所述第一定时器。
优选地，当第一定时器停止或超时时，如果保存的所述与第一参考信号有关的配置信息是通过RRC专有信令获得的，则删除保存的所述与第一参考信号有关的配置信息，如果系统消息中有与第一参考信号有关的配置信息，则使用该系统消息中的与第一参考信号有关的配置信息。
此外，根据本发明，提出了一种由用户设备UE执行的方法，包括：获取与第一参考信号有关的配置信息；保存获取的所述与第一参考信号有关的配置信息；以及检测包括用于指示所述第一参考信号是否传输或第一参考信号配置是否有效的第一指示信息在内的第一下行控制信息DCI，在接 收到所述第一DCI之后删除保存的所述与第一参考信号有关的配置信息。
另外，根据本发明，提出了一种由用户设备UE执行的方法，包括：获取与第一参考信号有关的配置信息；以及确定所述第一参考信号所在的带宽片段BWP。
此外，根据本发明，提出了一种由用户设备UE执行的方法，包括：获取与第一参考信号有关的配置信息；以及确定所述第一参考信号所在的子载波间隔SCS。
另外，根据本发明，提出了一种由用户设备UE执行的方法，包括：获取与第一参考信号有关的配置信息；以及根据第一参考频域位置确定所述第一参考信号的起始资源块。
此外，根据本发明，提出了一种用户设备，包括：处理器；以及存储器，存储有指令；其中，所述指令在由所述处理器运行时执行上述的方法。
根据本发明，空闲态和非激活态的UE可以通过TRS/CSI-RS来进行时频跟踪，从而更快速的完成同步，同时连接态的CSI-RS也可能被共享给空闲态和非激活态的UE用于空闲态和非激活态下的测量。
附图说明
为了更完整地理解本发明及其优势，现在将参考结合附图的以下描述，其中：
图1是示出了根据本发明的实施例1的由用户设备执行的方法的流程图。
图2是示出了根据本发明的实施例2的由用户设备执行的方法的流程图。
图3是示出了根据本发明的实施例3的由用户设备执行的方法的流程图。
图4是示出了根据本发明的实施例4的由用户设备执行的方法的流程图。
图5是示出了根据本发明的实施例5的由用户设备执行的方法的流程图。
图6是示意性示出本发明所涉及的用户设备的框图。
具体实施方式
下面结合附图和具体实施方式对本发明进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施方式。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。
下面描述本发明涉及的部分术语，术语的具体含义见3GPP最新标准规范，例如TS38.300、TS38.331、TS36.300、TS36.331等。除非另有指出，本发明中涉及的术语都具有下文的含义。
UE：User Equipment用户设备
NR：New Radio新一代无线技术
RRC：Radio Resource Control无线资源控制
RRC_CONNECTED：RRC连接态
RRC_INACTIVE：RRC非激活态
RRC_IDLE：RRC空闲态
RAN：Radio Access Network，无线接入层
PDCCH：Physical downlink control channel，物理下行控制信道
BWP：Bandwidth Part，带宽片段
CORESET：control-resource set，控制资源集
CSS：Common Search Space，公共搜索空间
DCI：Downlink Control Information，下行控制信息
DL：Downlink，下行
IE：Information Element，信息元素
MIB：Master Information Block，主信息块
NR：New Radio，新无线电
PBCH：Physical Broadcast Channel，物理广播信道
PDCCH：Physical Downlink Control Channel，物理下行控制信道
PRB：Physical Resource Block，物理资源块
PSS：Primary Synchronization Signal，主同步信号
RB：Resource Block，资源块
SCS：Subcarrier Spacing，子载波间隔
SIB：System Information Block，系统信息块
SSB：SS/PBCH block，同步信号/物理广播信道块
CSI：Channel-state information，信道状态信息
CSI-RS：CSI reference signal，信道状态信息参考信号
PO：Paging Occasion，寻呼时机
DCI：Downlink Control Information，下行控制信息
CD-SSB：Cell-Defining SSB，小区定义的SSB
本发明中，网络、基站和RAN可互换使用，所述网络可以是长期演进LET网络、新无线访问技术(New RAT，NR)网络、增强的长期演进eLTE网络，也可以是3GPP后续演进版本中定义的其他网络。
本发明中，用户设备UE可以指背景技术中所述的降低能力的NR设备，也可以指其他类型的NR设备或者LTE设备。静止设备包含一直固定不动的设备，一段时间内固定不动的设备，以及以很低速度移动的设备。
在现有技术中，RRC空闲态和非激活态下，UE需要监听PO来检测是否有自己的寻呼消息。为了能够接收寻呼，UE需要在PO时刻之前醒来，先接收SSB来进行同步。在无线资源环境比较差的情况下，UE可能需要接收多个SSB后才能够完成同步，这样UE就不得不提前较多时间醒来。在针对版本17的节省功率增强的工作项目中，通过将现有技术中仅用于连接态的TRS/CSI-RS时机共享给空闲态和非激活态的UE，UE可以通过TRS/CSI-RS来进行时频跟踪，从而更快速的完成同步。通过这种方式，相对于现有技术UE就可以不用过早的醒来而接收寻呼，从而达到节能的目标。同时连接态的CSI-RS也可能被共享给空闲态和非激活态的UE用于空闲态和非激活态下的测量。
用于空闲态和非激活态的TRS/CSI-RS可以通过RRC专有信令和/或系统消息进行配置。RRC专有信令用于配置UE级的配置，系统消息用于配置小区级的配置。TRS/CSI-RS的配置应该至少包括该信号的时间信息和频率信息。CSI-RS占用的频域资源可以是4个资源块的整数倍。
以下，详细描述本发明对CSI-RS配置的若干实施例。
实施例1
图1是示出了根据本发明的实施例1的由用户设备执行的方法的流程图。
在本发明的实施例1中，用户设备UE执行的步骤包括：步骤101、步骤103、步骤105、步骤107。
具体地，在步骤101，获取与第一参考信号有关的配置信息。
-可选地，所述第一参考信号是TRS。
-可选地，所述第一参考信号是CSI-RS。
通过接收基站发送的配置消息获取第一参考信号有关的配置信息，配置消息可以是如下的一项或多项：
-所述配置消息为RRC专有信令(例如RRCRelease消息)。
-所述配置消息为系统消息。
获取第一参考信号有关的配置信息用于，在如下的一项或多项情况下检测第一参考信号：
-在RRC空闲态检测第一参考信号。
-在RRC非激活态检测第一参考信号。
第一参考信号有关的配置信息包括UE检测第一参考信号所需的时频信息和控制信息，包括如下一项或多项：
-包括配置信息有效时长信息；
-包括第一参考信号的频域信息；
-包括第一参考信号的时域信息。
在步骤103，保存与第一参考信号有关的配置信息。
在步骤105，启动第一定时器。
-可选地，从RRC连接态进入空闲态时(例如收到没有携带suspend信息的RRCRelease消息)启动该定时器；
-可选地，从RRC连接态进入非激活态时(例如收到携带了suspend信息的RRCRelease消息))启动该定时器。
在步骤107，如果第一定时器在运行，停止第一定时器。
-可选地，当在收到RRCSetup消息时，停止第一定时器；
-可选地，当收到RRCResume消息时，停止第一定时器；
-可选地，当收到RRCRelease消息中携带了第一参考信号有关的配置信息；
-可选地，当发生小区重选，并且新选择的小区不在系统消息有效区 域内。
此外，在步骤107，当收到RRCRelease消息中携带了第一参考信号有关的配置信息，如果第一定时器在运行，先停止第一定时器，再根据RRCRelease消息中的第一参考信号配置重启第一定时器。
第一定时器停止或者超时的处理：
1)如果之前是通过RRC专有信令获得的用于空闲态和非激活态的第一参考信号配置，则删除这些保存的配置。此时，如果系统消息中也有空闲态和非激活态的第一参考信号配置，则UE使用系统消息中的第一参考信号配置。
2)如果之前是通过系统消息获得的用于空闲态和非激活态的第一参考信号配置，则删除这些保存的配置。
实施例2
图2是示出了根据本发明的实施例2的由用户设备执行的方法的流程图。
在本发明的实施例2中，用户设备UE执行的步骤包括：步骤201、步骤203和步骤205。
其中，步骤201同步骤101，步骤203同步骤103。
在步骤205中，UE检测第一DCI，第一DCI中包括第一指示信息，第一指示信息可以包括如下的一项或多项：
-第一指示信息指示第一参考信号实际上是否传输。
-第一指示信息指示第一参考信号配置是否有效。
MAC层收到含有第一指示信息的第一DCI后，通知RRC层。RRC层收到MAC的通知后，删除保存的用于空闲态和非激活态的第一参考信号相关配置。
实施例3
图3是示出了根据本发明的实施例3的由用户设备执行的方法的流程图。
在本发明的实施例3中，用户设备UE执行的步骤包括：步骤301和步 骤303。步骤301同步骤101。
在步骤303，确定所述第一参考信号所在的BWP(例如称为第一BWP)的一个或多个参数。
可选地，所述第一BWP是所述UE的初始下行BWP。
可选地，所述第一BWP的BWP ID是一个预定义的值(例如0)。
可选地，所述UE忽略所述配置信息中的BWP ID。
可选地，所述UE总是假定所述第一BWP所对应的BWP ID等于0。
可选地，若系统消息或者RRC专有信令中配置了节能参数，则所述UE忽略所述配置信息中的BWP ID。
可选地，若系统消息或者RRC专有信令中没有配置节能参数，则所述UE应用所述配置信息中的BWP ID。
可选地，所述第一BWP的SCS等于下面中的一项或多项：
-初始下行BWP的SCS。
-用于SIB1的SCS。
-用于初始接入时传输的Msg2的SCS。
-用于初始接入时传输的Msg4的SCS。
-用于寻呼的SCS。
-用于广播SI消息的SCS。
-由参数subCarrierSpacingCommon(例如MIB中的参数subCarrierSpacingCommon)配置的SCS。
-用于SSB的SCS。
-用于CORESET 0的SCS。
此处SSB可以指CD-SSB(小区定义的SSB)，小区为当前UE驻留的小区。
实施例4
图4是示出了根据本发明的实施例4的由用户设备执行的方法的流程图。
在本发明的实施例4中，用户设备UE执行的步骤包括：步骤401和步骤403。步骤401同101。
在步骤403，不依赖第一BWP，直接确定所述第一参考信号所在的SCS。
-初始下行BWP的SCS。
-用于SIB1的SCS。
-用于初始接入时传输的Msg2的SCS。
-用于初始接入时传输的Msg4的SCS。
-用于寻呼的SCS。
-用于广播SI消息的SCS。
-由参数subCarrierSpacingCommon(例如MIB中的参数subCarrierSpacingCommon)配置的SCS。
-用于CD-SSB的SCS。
-用于CORESET 0的SCS。
实施例5
图5是示出了根据本发明的实施例5的由用户设备执行的方法的流程图。
在本发明的实施例5中，用户设备UE执行的步骤包括：步骤501和步骤503。步骤501同步骤101。
在步骤503，确定所述第一参考信号的起始资源块(例如记为p)。例如，根据第一参考频域位置(例如记为n)确定所述第一参考信号的起始资源块；例如，p＝n+offset；又如，
Figure PCTCN2021123051-appb-000001
又如，
Figure PCTCN2021123051-appb-000002
可选地，p是相对于公共资源块0的资源块编号。
可选地，p是相对于所述第一BWP的起始资源块的资源块编号。
可选地，n是相对于公共资源块0的资源块编号。
可选地，n是相对于所述第一BWP的起始资源块的资源块编号。
可选地，n是相对于所述第一BWP的结尾资源块的资源块编号。
可选地，n是相对于所述第一BWP的中心资源块的资源块编号。
可选地，n是CORESET 0的起始资源块。
可选地，n是CORESET 0的结尾资源块。
可选地，n是CORESET 0的中心资源块。
可选地，n是SSB的起始资源块。
可选地，n是SSB的结尾资源块。
可选地，n是SSB的中心资源块。
可选地，offset是从第一参考频域位置偏移若干个资源块。
可选地，offset是从第一参考频域位置偏移若干个子载波。
当n是SSB的起始，结尾或者中心资源块，SSB可以指CD-SSB或者其他SSB。SSB的起始、结尾或者中心资源块可能是对齐SCS边界而不是对齐资源块边界的。则确定所述第一参考信号的起始资源块可以根据，例如：
Figure PCTCN2021123051-appb-000003
又如，
Figure PCTCN2021123051-appb-000004
其中，ssb-SubcarrierOffset是MIB中携带的对应于k SSB，表示SSB和整个载波的资源块栅格之间的以SCS为数量级的偏差值。当offset指从第一参考频域位置偏移若干个子载波，则确定所述第一参考信号的起始资源块根据，例如：
Figure PCTCN2021123051-appb-000005
又如，
Figure PCTCN2021123051-appb-000006
特别的，第一参考信号可以和第一参考频域位置的子载波带宽不同。此时，需要先根据第一参考频域位置确定第二参考频域位置(例如记为n′)，例如，
Figure PCTCN2021123051-appb-000007
又如，
Figure PCTCN2021123051-appb-000008
其中，μ ref指第一参考频域位置的子载波带宽系数，μ RS指第一参考信号子载波带宽系数。根据第二参考频域位置确定所述第一参考信号的起始资源块，如：p＝n′+offset；又如，
Figure PCTCN2021123051-appb-000009
又如，
Figure PCTCN2021123051-appb-000010
当n是SSB的起始，结尾或者中心资源块，SSB可以指CD-SSB或者其他SSB，SSB的起始、结尾或者中心资源块可能是对齐SCS边界而不是对齐资源块边界的，如：
Figure PCTCN2021123051-appb-000011
又如，
Figure PCTCN2021123051-appb-000012
又如，
Figure PCTCN2021123051-appb-000013
又如，
Figure PCTCN2021123051-appb-000014
[变形例]
下面，利用图6来说明作为一种变形例的可执行本发明上面所详细描述的用户设备执行的方法的用户设备。
图6是表示本发明所涉及的用户设备UE的框图。
如图6所示，该用户设备UE60包括处理器601和存储器602。处理器601例如可以包括微处理器、微控制器、嵌入式处理器等。存储器602例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器602上存储有程序指令。该指令在由处理器601运行时，可以执行本发明详细描述的由用户设备执行的上述方法。
运行在根据本发明的设备上的程序可以是通过控制中央处理单元(CPU)来使计算机实现本发明的实施例功能的程序。该程序或由该程序处理的信息可以临时存储在易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器系统中。
用于实现本发明各实施例功能的程序可以记录在计算机可读记录介质上。可以通过使计算机系统读取记录在所述记录介质上的程序并执行这些程序来实现相应的功能。此处的所谓“计算机系统”可以是嵌入在该设备中的计算机系统，可以包括操作系统或硬件(如外围设备)。“计算机可读记录介质”可以是半导体记录介质、光学记录介质、磁性记录介质、短时动态存储程序的记录介质、或计算机可读的任何其他记录介质。
用在上述实施例中的设备的各种特征或功能模块可以通过电路(例如，单片或多片集成电路)来实现或执行。设计用于执行本说明书所描述的功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、或其他可编程逻辑器件、分立的门或晶体管逻辑、分立的硬件组件、或上述器件的任意组合。通用处理器可以是微处理器，也可以是任何现有的处理器、控制器、微控制器、或状态机。上述电路可以是数字电路，也可以是模拟电路。因半导体技术的进步而出现了替代现有集成电路的新的集成电路技术的情况下，本发明的一个或多个实施例也可以使用这些新的集成电路技术来实现。
此外，本发明并不局限于上述实施例。尽管已经描述了所述实施例的 各种示例，但本发明并不局限于此。安装在室内或室外的固定或非移动电子设备可以用作终端设备或通信设备，如AV设备、厨房设备、清洁设备、空调、办公设备、自动贩售机、以及其他家用电器等。
如上，已经参考附图对本发明的实施例进行了详细描述。但是，具体的结构并不局限于上述实施例，本发明也包括不偏离本发明主旨的任何设计改动。另外，可以在权利要求的范围内对本发明进行多种改动，通过适当地组合不同实施例所公开的技术手段所得到的实施例也包含在本发明的技术范围内。此外，上述实施例中所描述的具有相同效果的组件可以相互替代。

Claims (10)

  1. 一种由用户设备UE执行的方法，包括：
    获取与第一参考信号有关的配置信息；
    保存获取的所述与第一参考信号有关的配置信息；
    当所述UE从无线资源控制RRC连接态进入空闲态或非激活态时，启动第一定时器；以及
    当第一定时器停止或超时时，删除保存的所述与第一参考信号有关的配置信息。
  2. 根据权利要求1所述的方法，其中，
    所述与第一参考信号有关的配置信息包括如下一项或多项：
    配置信息的有效时长信息；
    所述第一参考信号的频域信息；以及
    所述第一参考信号的时域信息。
  3. 根据权利要求1所述的方法，其中，
    当发生以下事件中的至少一个时停止所述第一定时器：
    收到RRC建立消息；
    收到RRC重启消息；
    收到携带了与第一参考信号有关的配置信息的RRC释放消息；以及
    当发生小区重选，并且新选择的小区不在系统消息的有效区域内。
  4. 根据权利要求1所述的方法，其中，
    当收到携带了与第一参考信号有关的配置信息的RRC释放消息时，先停止所述第一定时器，然后根据RRC释放消息中包括的与第一参考信号有关的配置信息来配置重启所述第一定时器。
  5. 根据权利要求1所述的方法，其中，
    当第一定时器停止或超时时，如果保存的所述与第一参考信号有关的配置信息是通过RRC专有信令获得的，则删除保存的所述与第一参考信号有关的配置信息，如果系统消息中有与第一参考信号有关的配置信息，则使用该系统消息中的与第一参考信号有关的配置信息。
  6. 一种由用户设备UE执行的方法，包括：
    获取与第一参考信号有关的配置信息；
    保存获取的所述与第一参考信号有关的配置信息；以及
    检测包括用于指示所述第一参考信号是否传输或第一参考信号配置是否有效的第一指示信息在内的第一下行控制信息DCI，在接收到所述第一DCI之后删除保存的所述与第一参考信号有关的配置信息。
  7. 一种由用户设备UE执行的方法，包括：
    获取与第一参考信号有关的配置信息；以及
    确定所述第一参考信号所在的带宽片段BWP。
  8. 一种由用户设备UE执行的方法，包括：
    获取与第一参考信号有关的配置信息；以及
    确定所述第一参考信号所在的子载波间隔SCS。
  9. 一种由用户设备UE执行的方法，包括：
    获取与第一参考信号有关的配置信息；以及
    根据第一参考频域位置确定所述第一参考信号的起始资源块。
  10. 一种用户设备，包括：
    处理器；以及
    存储器，存储有指令；
    其中，所述指令在由所述处理器运行时执行根据权利要求1至9中的任一项所述的方法。
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