WO2023098668A1 - 用户设备及其方法 - Google Patents

用户设备及其方法 Download PDF

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Publication number
WO2023098668A1
WO2023098668A1 PCT/CN2022/135065 CN2022135065W WO2023098668A1 WO 2023098668 A1 WO2023098668 A1 WO 2023098668A1 CN 2022135065 W CN2022135065 W CN 2022135065W WO 2023098668 A1 WO2023098668 A1 WO 2023098668A1
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Prior art keywords
timer
rrc
musim
assistance information
connected state
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PCT/CN2022/135065
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English (en)
French (fr)
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肖芳英
刘仁茂
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夏普株式会社
肖芳英
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Publication of WO2023098668A1 publication Critical patent/WO2023098668A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • 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

Definitions

  • the present disclosure relates to the technical field of wireless communication, and more specifically, the present disclosure relates to user equipment and methods thereof.
  • multi-USIM card devices have become more and more popular.
  • a user installs two USIM cards on a mobile phone supporting multiple USIM cards, one of which is used for subscribing private services, and the other USIM card is used for subscribing office services.
  • Existing devices supporting multiple USIM cards are implemented based on manufacturers and have not yet been standardized by 3GPP. As a result, different manufacturers adopt different implementation methods, and the behaviors of the user equipment UE are also different.
  • the UE needs to receive paging from these networks, based on the sending and receiving capabilities of the UE, it may There is a situation that another network initiates paging when the UE receives paging from the current network, or another network initiates paging when the UE is communicating with a network. If the UE switches between different networks, one result that may be caused is that the UE can no longer receive data from the current network when the UE switches to another network.
  • vivo proposed a work item for version 17 multi-SIM card devices (see non-patent literature : RP-193263: New WID: Stupport of Multi-SIM devices in Rel-17), and approved.
  • One of the goals of this work item is to define a mechanism for a UE to notify Network A when it leaves Network A, where Network A is NR, Network B is LTE or NR, and UE Single-Rx/Single-Tx or UE dual-receiving and single-transmitting (Dual-Rx/Single-Tx).
  • This disclosure discusses related issues involved in achieving the above work objectives.
  • the purpose of the present invention is to provide a user equipment and its method, which can save UE energy consumption by reporting auxiliary information to inform the network (or base station) about the preference of the UE to leave the RRC_CONNECTED state.
  • a method performed by a user equipment UE configured to provide multi-global subscriber identity card MUSIM assistance information, when the UE needs to leave the radio resource control RRC connected state , performing at least one of the following steps: the UE initiates transmission of a UE assistance information message to provide the MUSIM assistance information; starts a timer T, and sets the value of the timer T to indicate that the UE does not The time to wait for the network response to leave the RRC connected state or the timer musim-LeaveWithoutResponseTimer; start the timer T346f, and set the value of the timer T346f to releasePreferenceProhibitTimer, the prohibition timer for releasing the preference auxiliary information report.
  • the musim-PreferedRRCStateProhibitTimer when the musim-PreferedRRCStateProhibitTimer is configured for the UE, at least one of the steps may be executed in no sequence until the musim-PreferedRRCStateProhibitTimer is not running.
  • the UE may be that, when the timer T expires, the UE performs operations that need to be performed when entering the RRC idle state.
  • the UE if the UE is configured to provide a release preference releasePreference and the timer T346f is not running, and the timer T is not running, the following operations are performed: if the UE determines that the preference is to leave the RRC connected state, or if the UE is configured with a connection report and the UE determines that the preference is to modify the previously indicated leaving the RRC connected state, start the timer T346f, and set the value of the timer T346f to the The above releasePreferenceProhibitTimer initiates the transmission of the UE assistance information.
  • the following operations are performed: if the UE determines that the preference is to leave the the RRC connected state, or if the UE is configured with the connection report and the UE determines that the preference is to modify the previously indicated leaving the RRC connected state, start the timer T346f, and set the value of the timer T346f to Set as the releasePreferenceProhibitTimer, initiate transmission of the UE assistance information message to provide the release preference releasePreference.
  • timer T346x is also started when the timer T346f is started.
  • transmitting the UE assistance information to provide the release preference releasePreference includes: including the release preference releasePreference in the UE assistance information, setting the preferred RRC state in the release preference field as transmitting the Desired RRC state for UE assistance information.
  • the UE may be configured with the release preference configuration domain and the MUSIM auxiliary configuration domain at the same time.
  • a user equipment including: a processor; and a memory storing instructions; wherein the instructions execute the above method when executed by the processor.
  • UE energy consumption can be saved by reporting assistance information to inform the network (or base station) about the UE's preference to leave the RRC_CONNECTED state.
  • Fig. 1 shows a flowchart of a method in a user equipment UE based on an embodiment of the present disclosure.
  • Fig. 2 represents a block diagram of a user equipment according to an embodiment of the present disclosure.
  • NAS Non-access stratum, non-access stratum.
  • AS access stratum, access layer.
  • RRC Radio Resource Control, radio resource control.
  • RRC_CONNECTED RRC connected state.
  • RRC_INACTIVE RRC is inactive.
  • RRC_IDLE RRC idle state.
  • Radio Access Network Wireless Access layer
  • USIM Universal Subscriber Identity Module, global subscriber identity card.
  • MUSIM Multi-Universal Subscriber Identity Module, multi-global subscriber identity card.
  • Tx transmitter, sender.
  • Rx receiver, receiver.
  • New RAT new radio access technology.
  • network can be used interchangeably, and the network can be a long-term evolution LTE network, an NR network, an enhanced long-term evolution eLTE network, or other networks defined in subsequent evolution versions of 3GPP.
  • user equipment UE may refer to a device that physically supports multiple USIM cards (two or more USIM cards), the device is equipped with two or more USIM cards, and each USIM card is associated with a network.
  • the multiple USIM cards may be from the same operator or different operators. From the perspective of the network, different USIM cards correspond to different UEs, and each USIM card corresponds to one UE. Unless otherwise specified, the present disclosure does not distinguish between them.
  • Those skilled in the art can easily determine according to the context whether the UE refers to the UE supporting multiple USIM cards or the UE corresponding to each USIM card in the device supporting multiple USIM cards.
  • a user equipment configured with multiple USIM cards can receive and/or send data from multiple networks by means of time division multiplexing, etc. Receive data.
  • the USIM described in this disclosure may be a physical SIM or an eSIM (USIM can be a physical SIM or eSIM).
  • the UE is configured with two USIM cards as an example, and those skilled in the art can easily extend to the situation of multiple USIM cards.
  • the UE with two USIM cards has at least Single-Rx/Single-Tx or Dual-Rx/Single-Tx capability. Different UEs corresponding to two USIMs may share a pair of Tx and Rx or share one Tx but have their own Rx respectively.
  • the following describes the process of the UE requesting the network to release the RRC connection due to the MUSIM purpose.
  • the UE In the MUSIM scenario, the UE is in the RRC connection state in network A (ie, the base station), but the UE needs/desires to communicate with network B, for example, to establish an RRC connection with network B. At this time, the UE sends to network A instruction information for releasing the RRC connection of the current UE. Specifically, when a UE that provides MUSIM assistance information needs to leave the RRC_CONNECTED state, if the UE is configured to provide MUSIM assistance information and the UE needs to leave the RRC_CONNECTED state, the UE performs the following operations:
  • the timer T will be started only when the UE is configured with musim-LeaveWithoutResponseTimer.
  • the UE can set the musim-PreferedRRC-State included in the UEAssistanceInformation message to the desired RRC state.
  • the UE can determine whether it is configured to provide MUSIM assistance information according to whether it is configured with the musim-AssistanceConfig field, and the base station configures the UE to report assistance information through the musim-AssistanceConfig field carried in the RRC message (eg RRCReconfiguration message).
  • the UE being configured to provide MUSIM assistance information may be replaced by the UE being configured to indicate a preference to leave the RRC connected state for MUSIM purposes.
  • the UE initiates the transmission of a UEAssistanceInformation message to provide MUSIM assistance information, perform the following operations:
  • the following describes the process in which the UE initiates a request to the network to release the RRC connection for purposes such as energy saving.
  • UEs that provide auxiliary information to transition out of RRC connected state will initiate UEAssistanceInformation message transmission process.
  • a UE in the RRC connected state has no uplink data to send, and for the purpose of saving energy, the UE may initiate a UEAssistanceInformation message transmission process to provide a release preference.
  • the releasePreference field is included in the UEAssistanceInformation message, and the preferredRRC-State field included in the releasePreference field is set to the desired RRC state when sending the UEAssistanceInformation message (set preferredRRC-State to the desired RRC state on transmission of the UEAssistanceInformation message).
  • the base station can indicate/configure the UE to report its release preference through the ReleasePreferenceConfig field carried in the RRC message (such as RRCReconfiguration message).
  • the ReleasePreferenceConfig field is used to configure the UE to notify the network (or base station) of the UE's preference to leave the RRC_CONNECTED state by reporting auxiliary information (Configuration for the UE to report assistance information to inform the gNB about the UE's preference to leave RRC_CONNECTED state).
  • auxiliary information Configuration for the UE to report assistance information to inform the gNB about the UE's preference to leave RRC_CONNECTED state.
  • whether to immediately release the current RRC connection is determined by the base station according to the downlink service information of the current UE.
  • the UE has downlink data, even if the base station receives the UEAssistanceInformation message from the UE that contains the release preference (that is, the message contains the preferredRRC-State field used to indicate the RRC state preferred by the UE), it will The RRC connection of the current UE may not be released immediately. Specifically, if the UE is configured to provide its release preference and the timer T346f is not running, the following operations are performed:
  • the timer T346f sets the value of the timer to releasePreferenceProhibitTimer, and initiates the transmission of the UEAssistanceInformation message to provide the release preference.
  • the above transmission of UEAssistanceInformation message to provide release preference specifically includes the following operations:
  • the releasePreference is included in the UEAssistanceInformation message, and the preferredRRC-State is set to the RRC state expected to transmit the UEAssistanceInformation message.
  • the UE For the UE configured with the ReleasePreferenceConfig field and the musim-AssistanceConfig field, when the UE sends an RRC message requesting to release the RRC connection to network A due to the purpose of MUSIM (that is, the RRC message UEAssistanceInformation contains the musim-PreferedRRC-State field), Before the UE receives the RRCRelease message from network A to release the RRC connection or before the timer T expires, the UE triggers the process of providing auxiliary information to leave the RRC state due to the purpose of energy saving (for example, there is no uplink data) (ie Determine the preference to leave the RRC_CONNECTED state).
  • the process of providing auxiliary information to leave the RRC state due to the purpose of energy saving (for example, there is no uplink data) (ie Determine the preference to leave the RRC_CONNECTED state).
  • the UE since the UE has indicated to the network that it wants the network to release the current RRC connection, it does not need to send the RRC message requesting to release the RRC connection to the network again, so as to save signaling overhead.
  • Embodiments are provided below to achieve the purpose.
  • Fig. 1 shows a flowchart of a method in a user equipment UE based on an embodiment of the present disclosure.
  • the timer T346f is started after sending the UEAssistanceInformation message including the request to leave the RRC connected state indication information to the network due to the purpose of the MUSIM.
  • a UE that provides MUSIM assistance information needs to leave the RRC_CONNECTED state (because the MUSIM purpose needs to leave the RRC connection state)
  • the UE is configured to provide MUSIM assistance information (or is configured with musim-AssistanceConfig) and the UE needs to leave the RRC_CONNECTED state, then do at least one of the following:
  • the UE initiates the transmission of a UEAssistanceInformation message to provide MUSIM assistance information.
  • the above embodiment also needs to satisfy that the timer T346x corresponding to musim-PreferedRRCStateProhibitTimer is not running to perform the above operations (1)-(3), and/or perform the following operations (4 ):
  • the UE when the timer T expires, the UE performs the operations that need to be performed when entering RRC_IDLE (perform the actions upon going to RRC_IDLE).
  • the operations performed by the UE in the RRC_IDLE state may include resetting the media access control MAC, releasing all radio resources (including releasing the radio link control RLC entity, the backhaul adaptation protocol BAP entity, MAC configuration, and packet data of all established radio bearers Convergence protocol PDCP entity and service data adaptation protocol SDAP entity, backhaul BH RLC channel), indicate to the upper layer the release of the RRC connection and the reason for the release, etc.
  • the UE that has provided assistance information to leave the RRC connected state can initiate a UEAssistanceInformation message to indicate its preference to leave the RRC connected state (request to leave the RRC connected state for energy saving purposes) or change its preference RRC status.
  • the UE is configured to provide its release preference and the timer T346f is not running, and the timer T is not running (the UE is configured with musim-LeaveWithoutResponseTimer to perform this judging condition), then perform the following operations:
  • the timer T346f sets the value of the timer to releasePreferenceProhibitTimer, and initiates the transmission of the UEAssistanceInformation message to provide the release preference.
  • transmitting the UEAssistanceInformation message to provide the release preference specifically includes the following operations:
  • the releasePreference is included in the UEAssistanceInformation message, and the preferredRRC-State in the releasePreference field is set to the RRC state expected to transmit the UEAssistanceInformation message.
  • the UE that has provided assistance information to leave the RRC connected state can initiate a UEAssistanceInformation message to indicate its preference to leave the RRC connected state (request to leave the RRC connected state for energy saving purposes) or change its preference RRC status
  • the UE is configured to provide its release preference and the timer T346f is not running, and the prohibition timer T346x is not running (the UE is configured with musim-PreferedRRCStateProhibitTimer to perform this judgment condition), then perform the following operations:
  • the timer T346f sets the value of the timer to releasePreferenceProhibitTimer, and initiates the transmission of the UEAssistanceInformation message to provide the release preference.
  • the timer T346x is also started when the timer T346f is started.
  • Transmitting the UEAssistanceInformation message to provide release preferences specifically includes the following operations:
  • the releasePreference is included in the UEAssistanceInformation message, and the preferredRRC-State in the releasePreference field is set to the RRC state expected to transmit the UEAssistanceInformation message.
  • Embodiment 4 The UE cannot be configured with the ReleasePreferenceConfig domain and the musim-AssistanceConfig domain at the same time
  • the UE cannot be configured with the ReleasePreferenceConfig field and the musim-AssistanceConfig field at the same time.
  • the musim-AssistanceConfig field can be configured if and only if the UE is not configured with the ReleasePreferenceConfig field, and vice versa.
  • the operation of judging whether the timer is running and starting the timer in this disclosure is performed only when the parameters corresponding to the timer are configured, otherwise no corresponding operation is performed.
  • Fig. 2 represents a block diagram of a user equipment according to an embodiment of the present disclosure.
  • the UEAssistanceInformation message is used to indicate UE assistance information to the network.
  • the musim-AssistanceConfig field (also referred to as the musim-AssistanceConfig-Leave field) configures the UE to report assistance information, that is, configures the UE to report its release preference for MUSIM purposes.
  • the base station may instruct the UE to report its release preference for the MUSIM purpose through the musim-AssistanceConfig field carried in the RRC message (eg RRCReconfiguration message).
  • the preferredRRC-State field (filed) is used to indicate the UE's preferred/desired RRC state (Indicates the UE's preferred RRC state), that is, the RRC state to which the UE prefers to release from the RRC connected state.
  • this field indicates that the UE prefers to release from RRC connected state to RRC idle state (The value idle is indicated if the UE prefers to be released from RRC_CONNECTED and transition to RRC_IDLE); if this field is set to inactive, It indicates that the UE prefers to release from the RRC connected state to the RRC inactive state; if this field is set to connected, it indicates that the UE prefers to change (revert) the previous indication of leaving RRC_CONNECTED; if this field is set to outOfConnected, it indicates that the UE prefers to release the RRC connection and There is no preferred RRC state to transition to (has no preferred RRC state to transition to).
  • musim-PreferredRRC-State indicates the preferred RRC state when the UE leaves the RRC_CONNECTED state (or indicates that the UE prefers to leave the RRC state), and its value can be IDLE, INACTIVE or outOfRRCConnected. If this field is set to IDLE, it indicates that the UE prefers to release from the RRC connected state to the RRC idle state; if this field is set to INACTIVE, it indicates that the UE prefers to release from the RRC connected state to the RRC inactive state; if this field is set to outOfRRCConnected, It indicates that the UE prefers to release the RRC connection and does not prefer to enter the RRC state.
  • outOfRRCConnected is only used to indicate that the UE expects the network to release the current RRC connection but does not indicate the expected RRC state to be entered after the RRC connection is released.
  • the value of the musim-PreferredRRC-State field can be the same as the preferredRRC-State field, or a subset of the value of the preferredRRC-State field, for example, the value of the musim-PreferredRRC-State field is ⁇ idle, inactive ⁇ or ⁇ idle, inactive, outOfConnected ⁇ .
  • the value of the timer T is configured by the base station for the UE through the musim-LeaveWithoutResponseTimer field carried in the RRC message sent to the UE.
  • the musim-LeaveWithoutResponseTimer indicates the time (or timer) for the UE to leave the RRC_CONNECTED state without waiting for a network response.
  • the timer T expires, the UE automatically leaves the RRC_CONNECTED state and enters RRC_IDLE for MUSIM purposes.
  • musim-LeaveWithoutResponseTimer is a mandatory configuration (mandatory), then the musim-AssistanceConfig field does not need to be configured.
  • the judgment of whether the musim-AssistanceConfig field is configured can be replaced by whether the musim-LeaveWithoutResponseTimer field is configured.
  • the value of the timer T346x is configured by the base station for the UE through the musim-PreferedRRCStateProhibitTimer field carried in the RRC message sent to the UE.
  • the musim-PreferedRRCStateProhibitTimer is used for MUSIM purposes.
  • the UE is prohibited from frequently sending the UEAssistanceInformation message containing the musim-PreferredRRC-State field to the base station.
  • the value of the timer T346f is configured by the base station for the UE through the releasePreferenceProhibitTimer field carried in the RRC message sent to the UE.
  • the releasePreferenceProhibitTimer is a prohibition timer for release preference assistance information reporting (Prohibit timer for release preference assistance information reporting), that is It is used to prohibit the UE from frequently sending the UEAssistanceInformation message including the preferredRRC-State field to the base station.
  • connectedReporting indicates that the UE can report a preference to remain in the RRC connected state after the report leaves the RRC connected state (Indicates that the UE can report a preference to remain in RRC_CONNECTED state following a report to leave RRC_CONNECTED state).
  • Computer-executable instructions or programs for implementing the functions of the various embodiments of the present disclosure can be recorded on computer-readable storage media.
  • 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, which may include an operating system or hardware (such as peripheral devices).
  • the "computer-readable storage 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 for example, single-chip 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 can be a microprocessor, or it can be any existing processor, controller, microcontroller, or state machine.
  • the above-mentioned circuits may be digital circuits or analog circuits. Where new integrated circuit technologies have emerged to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present disclosure may also be implemented using these new integrated circuit technologies.
  • present disclosure is not limited to the above-described embodiments. Although various examples of the embodiments have been described, the present disclosure 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

本公开提供一种用户设备及其方法。由用户设备UE执行的方法，所述UE被配置提供多全球用户识别卡MUSIM辅助信息，在所述UE需要离开无线资源控制RRC连接态的情况下，执行以下步骤中的至少一项：所述UE发起传输UE辅助信息消息，以提供所述MUSIM辅助信息；启动定时器T，将所述定时器T的值设置为指示用于所述UE不等待网络应答而离开所述RRC连接态的时间或定时器musim-LeaveWithoutResponseTimer；启动定时器T346f，将所述定时器T346f的值设置为用于释放偏好辅助信息报告的禁止定时器releasePreferenceProhibitTimer。

Description

用户设备及其方法 技术领域
本公开涉及无线通信技术领域，更具体地，本公开涉及用户设备及其方法。
背景技术
近年来，多USIM卡设备越来越流行。例如一个用户在支持多USIM卡的手机上安装两张USIM卡，其中一张USIM卡用于订阅私人业务，另一张USIM卡用于订阅办公业务。现有支持多USIM卡的设备是基于厂商实现，尚未被3GPP标准化。导致不同的厂商采用不同的实现方式，用户设备UE的行为也各不相同。现有实现方式中，如果这些USIM卡分别向网络注册(可注册到同一网络也可分别注册到两个或两个以上网络)，UE需要从这些网络接收寻呼，基于UE的收发能力，可能存在的一种情形是UE在接收当前网络的寻呼时另一个网络也对其发起寻呼，又或者UE正与一个网络通信时另一个网络对其发起寻呼。如果UE在不同的网络之间切换，可能导致的一个结果是当UE切换到另一个网络时UE不能再从当前网络接收数据。这将损害网络性能，例如网络向UE发送了寻呼但UE因切换到另一个网络而没有接收到这个寻呼，或UE切换到另一个网络而不能接收当前网络的调度。部分厂商提出对具备多USIM卡的UE接入网络的行为及相关网络进行3GPP标准化研究，其好处在于可以基于可预测的UE行为，提升网络性能。
基于上述原因，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，vivo提出了针对版本17的多SIM卡设备的工作项目(参见非专利文献：RP-193263：New WID：Stupport of Multi-SIM devices in Rel-17)，并获批准。该工作项目的目标之一是定义UE在离开网络A时通知网络A的机制，其中网络A是NR，网 络B是LTE或NR，且UE单收单发(Single-Rx/Single-Tx)或UE双收单发(Dual-Rx/Single-Tx)。
本公开讨论达成上述工作目标所涉及的相关问题。
发明内容
本发明的目的在于，提供了一种用户设备及其方法，通过报告辅助信息来通知网络(或基站)关于UE离开RRC_CONNECTED状态的偏好，能够节省UE能耗。
根据本公开的第一方面，提供了一种由用户设备UE执行的方法，所述UE被配置提供多全球用户识别卡MUSIM辅助信息，在所述UE需要离开无线资源控制RRC连接态的情况下，执行以下步骤中的至少一项：所述UE发起传输UE辅助信息消息，以提供所述MUSIM辅助信息；启动定时器T，将所述定时器T的值设置为指示用于所述UE不等待网络应答而离开所述RRC连接态的时间或定时器musim-LeaveWithoutResponseTimer；启动定时器T346f，将所述定时器T346f的值设置为用于释放偏好辅助信息报告的禁止定时器releasePreferenceProhibitTimer。
在上述方法中，可以是，当所述UE被配置了musim-PreferedRRCStateProhibitTimer，则还需满足所述musim-PreferedRRCStateProhibitTimer未运行，才无先后顺序地执行所述步骤中的至少一项。
在上述方法中，可以是，当所述定时器T到期时，所述UE执行进入RRC空闲态时需要执行的操作。
在上述方法中，可以是，如果所述UE被配置提供释放偏好releasePreference并且所述定时器T346f未运行，并且所述定时器T未运行，则执行以下操作：如果所述UE确定偏好离开所述RRC连接态，或者如果所述UE被配置了连接报告并且所述UE确定偏好修改先前指示的离开所述RRC连接态，则启动所述定时器T346f，将所述定时器T346f的值设置为所述releasePreferenceProhibitTimer，发起传输所述UE辅助信息。
在上述方法中，可以是，如果所述UE被配置提供释放偏好releasePreference并且所述定时器T346f未运行，并且所述禁止定时器T346x未运行，则执行以下操作：如果所述UE确定偏好离开所述RRC连接态，或者如果 所述UE被配置了所述连接报告并且所述UE确定偏好修改先前指示的离开所述RRC连接态，则启动所述定时器T346f，将所述定时器T346f的值设置为所述releasePreferenceProhibitTimer，发起传输所述UE辅助信息消息以提供所述释放偏好releasePreference。
在上述方法中，可以是，在启动所述定时器T346f时还启动所述定时器T346x。
在上述方法中，可以是，传输所述UE辅助信息以提供所述释放偏好releasePreference包括：在所述UE辅助信息中包含所述释放偏好releasePreference，设置释放偏好域中的偏好RRC状态为传输所述UE辅助信息所期望的RRC状态。
在上述方法中，可以是，所述UE不能被同时配置释放偏好配置域和MUSIM辅助配置域。
根据本公开的第二方面，提供了一种用户设备，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方法。
发明效果
根据本公开，通过报告辅助信息来通知网络(或基站)关于UE离开RRC_CONNECTED状态的偏好，能够节省UE能耗。
附图说明
通过下文结合附图的详细描述，本公开的上述和其它特征将会变得更加明显，其中：
图1表示基于本公开的实施例的用户设备UE中的方法的流程图。
图2表示基于本公开的实施例的用户设备的框图。
具体实施方式
下面结合附图和具体实施方式对本公开进行详细阐述。应当注意，本公开不应局限于下文所述的具体实施方式。另外，为了简便起见，省略了对与本公开没有直接关联的公知技术的详细描述，以防止对本公开的理解造成混淆。
下面描述本公开涉及的部分术语，术语的具体含义见3GPP最新相关文档，例如TS38.300、TS38.331、TS36.300、TS36.331等。
NAS：Non-access stratum，非接入层。
AS：access stratum，接入层。
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。
USIM：Universal Subscriber Identity Module，全球用户识别卡。
MUSIM：Multi-Universal Subscriber Identity Module，多全球用户识别卡。
Tx：transmitter，发信机。
Rx：receiver，接收机。
NR：New RAT，新无线访问技术。
本公开中，网络、基站和RAN可互换使用，所述网络可以是长期演进LTE网络、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。
本公开中，用户设备UE可指物理上支持多USIM卡(两个或两个以上USIM卡)的设备，所述设备装配了两个或两个以上USIM卡，每个USIM卡关联一个网络。所述多个USIM卡可以来自同一个运营商或不同的运营商。从网络的角度来看，不同的USIM卡对应不同的UE，每个USIM卡对应一个UE。如未特别说明，本公开不对此加以区分。本领域技术人员可以根据上下文容易地确定UE是指支持多USIM卡的UE还是支持多USIM卡的设备中每个USIM卡分别对应的UE。配置了多USIM卡的用户设备可以通过时分复用等方式利用单收单发或双收单发从多个网络接收和/或发送数据，对于具有两个Rx的UE，可以同时从两个网络接收数据。此外，本公开所述USIM可以是物理SIM或eSIM(USIM can be a physical SIM or eSIM)。
本公开实施例以UE配置两个USIM卡为例，本领域技术人员可以容易的扩展到多个USIM卡的情况。具有两个USIM卡的用户设备UE至少具有 单收单发(Single-Rx/Single-Tx)或双收单发(Dual-Rx/Single-Tx)能力。两个USIM对应的不同UE可以共用一对Tx和Rx或共用一个Tx但分别具有各自的Rx。
以下描述UE由于MUSIM目的发起向网络请求释放RRC连接的过程。
在MUSIM场景中，UE在网络A(即基站)处于RRC连接态，但是，UE需要/希望与网络B通信，例如与网络B建立RRC连接。此时，UE向网络A发送释放当前UE的RRC连接的指示信息。具体地，具有提供MUSIM辅助信息的UE需要离开RRC_CONNECTED状态时，如果UE被配置提供MUSIM辅助信息并且UE需要离开RRC_CONNECTED状态，则UE执行以下操作：
发起传输UEAssistanceInformation消息以提供MUSIM辅助信息；启动定时器T并将定时器的值设置为musim-LeaveWithoutResponseTimer。
需要说明的是，如果定时器T是可选配置，则只有在UE被配置了musim-LeaveWithoutResponseTimer时才启动定时器T。所述UE在需要离开RRC_CONNECTED状态(因MUSIM目的)时，可设置包含在UEAssistanceInformation消息中的musim-PreferedRRC-State为期望的RRC状态。UE可以根据是否被配置了musim-AssistanceConfig域来确定是否被配置提供MUSIM辅助信息，基站通过携带在RRC消息(例如RRCReconfiguration消息)中的所述musim-AssistanceConfig域来配置UE报告辅助信息。此外，UE被配置提供MUSIM辅助信息可以替换为UE被配置了为MUSIM目的指示偏好离开RRC连接态。
此外，如果UE发起传输UEAssistanceInformation消息以提供MUSIM辅助信息，执行以下操作：
如果UE需要离开RRC_CONNECTED状态，设置musim-PreferedRRC-State为期望的RRC状态。
以下描述UE由于节能等目的发起向网络请求释放RRC连接的过程。
在为节能等目的的场景中，具有提供辅助信息以离开(transition out of)RRC连接态的UE，在确定偏好离开RRC连接态或改变(revert)其偏好(prefered)的RRC状态时，将发起UEAssistanceInformation消息传输过程。例如，处于RRC连接态的UE没有上行数据需要发送，为节能目的， UE可发起UEAssistanceInformation消息传输过程以提供释放偏好。如果UE发起UEAssistanceInformation消息传输以提供UE的释放偏好，在所述UEAssistanceInformation消息中包含releasePreference域，设置包含在releasePreference域中的preferredRRC-State域为发送UEAssistanceInformation消息时期望的RRC状态(set preferredRRC-State to the desired RRC state on transmission of the UEAssistanceInformation message)。基站可以通过携带在RRC消息(例如RRCReconfiguration消息)中的ReleasePreferenceConfig域来指示/配置UE上报其释放偏好，ReleasePreferenceConfig域用于配置UE通过报告辅助信息来通知网络(或基站)关于UE离开RRC_CONNECTED状态的偏好(Configuration for the UE to report assistance information to inform the gNB about the UE′s preference to leave RRC_CONNECTED state)。但是，基站在接收到来自UE的所述包含释放偏好指示的UEAssistanceInformation消息后，是否立即释放当前的RRC连接是由基站根据当前UE的下行业务信息等确定。换言之，在这种情况下，如果UE有下行数据，即使基站收到来自UE的包含释放偏好的UEAssistanceInformation消息(即所述消息中包含用于指示UE偏好的RRC状态的preferredRRC-State域)，也不一定会立即释放当前UE的RRC连接。具体的，如果UE被配置提供其释放的偏好并且定时器T346f未运行，则执行以下操作：
如果UE确定其偏好离开RRC连接态，或者如果UE被配置了connectedReporting并且UE确定其偏好修改先前指示的离开RRC连接态(it would prefer to revert an earlier indication to transition out of RRC_CONNECTED state)，则启动定时器T346f，将定时器的值设置为releasePreferenceProhibitTimer，发起传输UEAssistanceInformation消息以提供释放偏好。
上述传输UEAssistanceInformation消息以提供释放偏好具体包括以下操作：
在UEAssistanceInformation消息中包含releasePreference，设置preferredRRC-State为传输UEAssistanceInformation消息所期望的RRC状态。
对于被配置了ReleasePreferenceConfig域和musim-AssistanceConfig域的UE，当UE由于MUSIM的目的向网络A发送请求释放RRC连接的RRC消息后(即所述RRC消息UEAssistanceInformation中包含musim-Prefere dRRC-State域)，在UE接收到来自网络A的释放RRC连接的RRCRelease消息前或者UE在定时器T到期前，又由于节能的目的(例如，没有上行数据)触发了提供辅助信息以离开RRC状态的过程(即确定偏好离开RRC_CONNECTED状态)。此时，由于UE已经向网络指示其希望网络释放当前RRC连接，故不需要再次向网络发送请求释放RRC连接的RRC消息，以节省信令开销。以下提供实施方式来实现所述目的。
实施例一
图1表示基于本公开的实施例的用户设备UE中的方法的流程图。
由于MUSIM目的向网络发送包含请求离开RRC连接态指示信息的UEAssistanceInformation消息后启动定时器T346f。
具体的，具有提供MUSIM辅助信息的UE需要离开RRC_CONNECTED状态(因为MUSIM目的需要离开RRC连接态)时，如果UE被配置提供MUSIM辅助信息(或者被配置了musim-AssistanceConfig)并且UE需要离开RRC_CONNECTED状态，则执行以下操作至少一项：
(1)UE发起传输UEAssistanceInformation消息以提供MUSIM辅助信息。
(2)启动定时器T，将定时器的值设置为musim-LeaveWithoutResponseTimer。(UE被配置了musim-LeaveWithoutResponseTimer才执行此操作)
(3)启动定时器T346f，将定时器的值设置为releasePreferenceProhibitTimer。(UE被配置了releasePreferenceProhibitTimer才执行此操作)
需要说明的是，变换上述(1)-(3)的执行顺序得到的实施例也是本公开保护的范围。
可选的，当UE被配置了musim-PreferedRRCStateProhibitTimer，则上述实施例还需满足musim-PreferedRRCStateProhibitTimer对应的定时器T346x未运行才能执行上述操作(1)-(3)，和/或执行以下操作(4)：
(4)启动禁止定时器T346x，将禁止定时器T346x的值设置为musim-PreferedRRCStateProhibitTimer(UE被配置了musim-PreferedRRCStateProhibitTimer才执行此操作)。
需要说明的是，变换上述(1)-(4)的执行顺序得到的实施例也是本 公开保护的范围。
此外，当定时器T到期时，UE执行进入RRC_IDLE时需要执行的操作(perform the actions upon going to RRC_IDLE)。UE进入RRC_IDLE态执行的操作可包括重置媒体访问控制MAC、释放所有的无线资源(包括释放无线链路控制RLC实体、回程适配协议BAP实体、MAC配置和所有已建立的无线承载的分组数据汇聚协议PDCP实体和服务数据适配协议SDAP实体、回程BH RLC信道)、向上层指示RRC连接的释放及释放原因等。
实施例二
只有定时器T和定时器T346f均未运行，具有提供辅助信息以离开RRC连接态的UE才能发起UEAssistanceInformation消息以指示其偏好离开RRC连接态(为节能目的请求离开RRC连接态)或改变其偏好的RRC状态。
具体的，如果UE被配置提供其释放的偏好并且定时器T346f未运行，并且定时器T未运行(UE被配置了musim-LeaveWithoutResponseTimer才执行此此判断条件)，则执行以下操作：
如果UE确定其偏好离开RRC连接态，或者如果UE被配置了connectedReporting并且UE确定其偏好修改先前指示的离开RRC连接态(it would prefer to revert an earlier indication to transition out of RRC_CONNECTED state)，则启动定时器T346f，将定时器的值设置为releasePreferenceProhibitTimer，发起传输UEAssistanceInformation消息以提供释放偏好。
本公开中，传输UEAssistanceInformation消息以提供释放偏好具体包括以下操作：
在UEAssistanceInformation消息中包含releasePreference，设置releasePreference域中的preferredRRC-State为传输UEAssistanceInformation消息所期望的RRC状态。
实施例三
只有禁止定时器T346x和定时器T346f均未运行，具有提供辅助信息以离开RRC连接态的UE才能发起UEAssistanceInformation消息以指示其偏好离开RRC连接态(为节能目的请求离开RRC连接态)或改变其偏好 的RRC状态
具体的，如果UE被配置提供其释放的偏好并且定时器T346f未运行，并且禁止定时器T346x未运行(UE被配置了musim-PreferedRRCStateProhibitTimer才执行此判断条件)，则执行以下操作：
如果UE确定其偏好离开RRC连接态，或者如果UE被配置了connectedReporting并且UE确定其偏好修改先前指示的离开RRC连接态(it would prefer to revert an earlier indication to transition out of RRC_CONNECTED state)，则启动定时器T346f，将定时器的值设置为releasePreferenceProhibitTimer，发起传输UEAssistanceInformation消息以提供释放偏好。可选的，在启动定时器T346f时还启动定时器T346x。
传输UEAssistanceInformation消息以提供释放偏好具体包括以下操作：
在UEAssistanceInformation消息中包含releasePreference，设置releasePreference域中的preferredRRC-State为传输UEAssistanceInformation消息所期望的RRC状态。
实施例四UE不能被同时配置ReleasePreferenceConfig域和musim-AssistanceConfig域
在本实施例中，UE不能被同时配置ReleasePreferenceConfig域和musim-AssistanceConfig域。换言之，当且仅当UE没有被配置ReleasePreferenceConfig域时才可以被配置musim-AssistanceConfig域，反之亦然。
需要说明的是，本公开中关于定时器是否正在运行的判断操作和启动定时器的操作是只有在所述定时器对应的参数被配置了才执行，否则不执行相应的操作。
图2表示基于本公开的实施例的用户设备的框图。
以下说明本公开涉及的部分消息或字段的含义。
UEAssistanceInformation消息用于向网络指示UE辅助信息。
musim-AssistanceConfig域(也可记为musim-AssistanceConfig-Leave域)配置UE报告辅助信息，即配置UE报告其为MUSIM目的的释放偏好。基站可以通过携带在RRC消息(例如RRCReconfiguration消息)中的musim-AssistanceConfig域来指示UE上报其为MUSIM目的的释放偏好。
preferredRRC-State域(filed)用于指示UE偏好(prefer)/期望的RR C状态(Indicates the UE′s preferred RRC state)，即UE偏好从RRC连接态释放到的RRC状态。例如，如果这个域设置为idle，则指示UE偏好从RRC连接态释放到RRC空闲态(The value idle is indicated if the UE prefers to be released from RRC_CONNECTED and transition to RRC_IDLE)；如果这个域设置为inactive，则指示UE偏好从RRC连接态释放到RRC非激活态；这个域设置为connected，则指示UE偏好改变(revert)先前离开RRC_CONNECTED的指示；如果这个域设置为outOfConnected，则指示UE偏好释放RRC连接并且没有偏好进入的RRC状态(has no preferred RRC state to transition to)。
musim-PreferredRRC-State指示UE离开RRC_CONNECTED状态时偏好的RRC状态(或者指示UE偏好离开RRC状态)，其取值可以为IDLE或INACTIVE或outOfRRCConnected。如果这个域设置为IDLE，则指示UE偏好从RRC连接态释放到RRC空闲态；如果这个域设置为INACTIVE，则指示UE偏好从RRC连接态释放到RRC非激活态；如果这个域设置为outOfRRCConnected，则指示UE偏好释放RRC连接并且没有偏好进入的RRC状态。outOfRRCConnected仅用于指示UE希望网络释放当前RRC连接但不指示期望释放RRC连接后进入的RRC状态。此外，musim-PreferredRRC-State域的取值可以与preferredRRC-State域相同，或者是preferredRRC-State域取值的子集，例如，musim-PreferredRRC-State域的取值为{idle，inactive}或者{idle，inactive，outOfConnected}。
定时器T的取值由基站通过在发送给UE的RRC消息中携带的musim-LeaveWithoutResponseTimer域为UE配置，musim-LeaveWithoutResponseTimer指示用于UE不等待网络应答而离开RRC_CONNECTED状态的时间(或定时器)。当定时器T到期，UE为MUSIM目的自动离开RRC_CONNECTED状态和进入RRC_IDLE。如果musim-LeaveWithoutResponseTimer是必选配置(mandatory)，那么可以不需要配置musim-AssistanceConfig域，相应的，是否配置了musim-AssistanceConfig域的判断都可以替换为是否配置了musim-LeaveWithoutResponseTimer域。
定时器T346x的取值由基站通过在发送给UE的RRC消息中携带的musim-PreferedRRCStateProhibitTimer域为UE配置，musim-PreferedRRCStateProhibitTimer是用于为MUSIM目的的释放偏好辅助信息报告的禁止定时 器，即用于禁止UE频繁向基站发送包含musim-PreferredRRC-State域的UEAssistanceInformation消息。
定时器T346f的取值由基站通过在发送给UE的RRC消息中携带的releasePreferenceProhibitTimer域为UE配置，releasePreferenceProhibitTimer是用于释放偏好辅助信息报告的禁止定时器(Prohibit timer for release preference assistance information reporting)，即用于禁止UE频繁向基站发送包含preferredRRC-State域的UEAssistanceInformation消息。
connectedReporting指示UE可以在报告离开RRC连接态之后报告偏好保持在RRC连接态(Indicates that the UE can report a preference to remain inRRC_CONNECTED state following a report to leave RRC_CONNECTEDstate)。
用于实现本公开各实施例功能的计算机可执行指令或程序可以记录在计算机可读存储介质上。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)。“计算机可读存储介质”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，本公开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，本公开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，但本公开并不局限于此。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，已经参考附图对本公开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，本公开也包括不偏离本公开主旨的任何设计改动。另外，可以在权利要求的范围内对本公开进行多种改动，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公开的技术范围内。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 (9)

  1. 一种由用户设备UE执行的方法，
    所述UE被配置提供多全球用户识别卡MUSIM辅助信息，
    在所述UE需要离开无线资源控制RRC连接态的情况下，执行以下步骤中的至少一项：
    所述UE发起传输UE辅助信息消息，以提供所述MUSIM辅助信息；
    启动定时器T，将所述定时器T的值设置为指示用于所述UE不等待网络应答而离开所述RRC连接态的时间或定时器musim-LeaveWithoutResponseTimer；
    启动定时器T346f，将所述定时器T346f的值设置为用于释放偏好辅助信息报告的禁止定时器releasePreferenceProhibitTimer。
  2. 根据权利要求1所述的方法，其中，
    当所述UE被配置了musim-PreferedRRCStateProhibitTimer，则还需满足所述musim-PreferedRRCStateProhibitTimer未运行，才无先后顺序地执行所述步骤中的至少一项。
  3. 根据权利要求1所述的方法，其中，
    当所述定时器T到期时，所述UE执行进入RRC空闲态时需要执行的操作。
  4. 根据权利要求1-3中任一项所述的方法，其中，
    如果所述UE被配置提供释放偏好releasePreference并且所述定时器T346f未运行，并且所述定时器T未运行，则执行以下操作：
    如果所述UE确定偏好离开所述RRC连接态，或者如果所述UE被配置了连接报告并且所述UE确定偏好修改先前指示的离开所述RRC连接态，则启动所述定时器T346f，将所述定时器T346f的值设置为所述releasePreferenceProhibitTimer，发起传输所述UE辅助信息。
  5. 根据权利要求1-3中任一项所述的方法，其中，
    如果所述UE被配置提供释放偏好releasePreference并且所述定时器T346f未运行，并且所述禁止定时器T346x未运行，则执行以下操作：
    如果所述UE确定偏好离开所述RRC连接态，或者如果所述UE被配置了所述连接报告并且所述UE确定偏好修改先前指示的离开所述RRC连 接态，则启动所述定时器T346f，将所述定时器T346f的值设置为所述releasePreferenceProhibitTimer，发起传输所述UE辅助信息消息以提供所述释放偏好releasePreference。
  6. 根据权利要求5所述的方法，其中，
    在启动所述定时器T346f时还启动所述定时器T346x。
  7. 根据权利要求5所述的方法，其中，
    传输所述UE辅助信息以提供所述释放偏好releasePreference包括：
    在所述UE辅助信息中包含所述释放偏好releasePreference，设置释放偏好域中的偏好RRC状态为传输所述UE辅助信息所期望的RRC状态。
  8. 根据权利要求1所述的方法，其中，
    所述UE不能被同时配置释放偏好配置域和MUSIM辅助配置域。
  9. 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8中任一项所述的方法。
PCT/CN2022/135065 2021-12-01 2022-11-29 用户设备及其方法 WO2023098668A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200314851A1 (en) * 2019-03-26 2020-10-01 Charter Communications Operating, Llc Methods and apparatus for system information management in a wireless system
CN112218354A (zh) * 2019-07-10 2021-01-12 苹果公司 有多个具有改进的暂停/恢复操作的用户身份模块的ue
CN113709818A (zh) * 2020-05-21 2021-11-26 华为技术有限公司 一种通信方法及通信装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200314851A1 (en) * 2019-03-26 2020-10-01 Charter Communications Operating, Llc Methods and apparatus for system information management in a wireless system
CN112218354A (zh) * 2019-07-10 2021-01-12 苹果公司 有多个具有改进的暂停/恢复操作的用户身份模块的ue
CN113709818A (zh) * 2020-05-21 2021-11-26 华为技术有限公司 一种通信方法及通信装置

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