WO2022017461A1 - 用户设备、基站及其方法 - Google Patents

用户设备、基站及其方法 Download PDF

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Publication number
WO2022017461A1
WO2022017461A1 PCT/CN2021/107853 CN2021107853W WO2022017461A1 WO 2022017461 A1 WO2022017461 A1 WO 2022017461A1 CN 2021107853 W CN2021107853 W CN 2021107853W WO 2022017461 A1 WO2022017461 A1 WO 2022017461A1
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WIPO (PCT)
Prior art keywords
network
communication network
message
request message
paging
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PCT/CN2021/107853
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English (en)
French (fr)
Inventor
肖芳英
刘仁茂
罗超
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夏普株式会社
肖芳英
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Publication of WO2022017461A1 publication Critical patent/WO2022017461A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • 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
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data

Definitions

  • the present disclosure relates to the technical field of wireless communication, and more particularly, to a user equipment, a base station and a method thereof.
  • multi-USIM card devices have become more and more popular.
  • a user installs two USIM cards on a mobile phone that supports multiple USIM cards, where one USIM card is used for subscribing to private services, and the other USIM card is used for subscribing to office services.
  • Existing devices supporting multiple USIM cards are implemented based on manufacturers and have not been standardized by 3GPP. As a result, different manufacturers adopt different implementation manners, and the behaviors of user equipment UEs are also different.
  • a UE registered to two or more networks needs to receive paging from these networks, based on the transmitting and receiving capabilities of the UE, there may be a situation that the UE receives a paging from the current network when another It is also paged by the network, or the UE is being paged by another network while the UE is communicating with another network. If the UE switches between different networks, one possible consequence is that the UE can no longer receive data from the current network when the UE switches to another network. This will impair network performance, eg the network sends a page to the UE but the UE does not receive the page due to handover to another network, or the UE is handed over to another network and cannot receive the current network's schedule.
  • the benefit of 3GPP standardization is that it can improve network performance based on predictable UE behavior.
  • One of the goals of this work item is to solve the problem that UEs associated to two networks (Network A and Network B) through different USIM cards collide when receiving pages from the two networks, where Network A can be NR, Network A can be NR, Network B can be LTE or NR, and the UE is single-acquisitive (Single-Rx/Single-Tx); another goal of this work item is to define a mechanism for the UE to notify network A when it leaves network A, where network A is NR, Network B is LTE or NR, and UE single receive single transmit (Single-Rx/Single-Tx) or UE dual receive single transmit (Dual-Rx/Single-Tx).
  • This disclosure discusses related issues involved in achieving the above-mentioned work objectives.
  • the present invention provides a user equipment, a base station and a method thereof, which can avoid collisions when the user equipment using the multi-network association mode receives pages from multiple networks.
  • a method performed by a user equipment UE capable of at least performing multi-network association with a first communication network and a second communication network comprising: working on all of the first communication network the UE constructs a request message, the request message including a first indication for instructing the first communication network to release the time information for the UE to leave the first communication network; and sending the first communication network to the first communication network request message.
  • the method further comprises: receiving response information for the request message from the first communication network.
  • the request message is a radio resource control RRC connection establishment request message or an RRC connection continuation request message
  • the response message for the RRC connection establishment request message is an RRC connection reject message
  • the RRC connection continuation request message is for the RRC connection continuation request message.
  • the reply message is an RRC connection release message.
  • the time information at which the UE leaves the first communication network is predetermined according to the time information at which a paging message from the second communication network is to be received.
  • a method performed by a user equipment UE comprising: receiving a system information message from a base station; and if the system information message includes a method for indicating that the base station can support UEs adopting a multi-network association manner the first indication of paging, and the UE supports the multi-network association mode or works in the multi-network association mode, the UE detects and obtains the paging message at the first paging moment; otherwise, the The UE detects and acquires the paging message at the second paging moment.
  • the first paging moment is a hopping-based paging moment
  • the paging frame of the first paging moment is determined based on the system frame number and the paging frame offset given in the corresponding communication network .
  • a user equipment comprising: a processor; and a memory storing instructions, wherein the instructions execute the above-mentioned method when executed by the processor.
  • a method performed by a base station communicating with a user equipment UE capable of at least multi-network association with a first communication network and a second communication network comprising: from a working receiving a request message at the UE of the first communication network, the request message including a first indication for instructing the first communication network to release the time information for the UE to leave the first communication network; and The UE sends response information for the request message.
  • a method performed by a base station including: sending a system information message to a user equipment UE; and the UE executing the above method when receiving the system information message.
  • a base station comprising: a processor; and a memory storing instructions, wherein the instructions execute the above-mentioned method when executed by the processor.
  • 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 block diagram schematically showing the user equipment involved in the present invention.
  • FIG. 4 is a block diagram schematically showing a base station according to the present invention.
  • 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 inactive state.
  • RRC_IDLE RRC idle state.
  • Radio Access Network Radio Access layer
  • USIM Universal Subscriber Identity Module, global user identification card.
  • Tx transmitter, transmitter.
  • Rx receiver, receiver.
  • New RAT New Radio Access Technology.
  • network base station, and RAN are used interchangeably, and the network may be a long-term evolution LTE network, an NR network, an enhanced long-term evolution eLTE network, or other networks defined in subsequent 3GPP evolution releases.
  • 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. From the perspective of the network, different USIM cards correspond to different UEs, and each USIM card corresponds to one UE. If not specifically stated, the present disclosure does not distinguish this. Those skilled in the art can easily determine whether the UE refers to a UE supporting multiple USIM cards or a UE corresponding to each USIM card in the device supporting multiple USIM cards according to the context.
  • a user equipment configured with multiple USIM cards can receive and/or transmit data from multiple networks using single-receiver-single-transmit or dual-receiver-single-transmit through time division multiplexing, and for UEs with two Rx, can receive from two networks at the same time data.
  • a user equipment UE with multiple USIM cards has a single-receive-single-transmit (Single-Rx/Single-Tx) or dual-receive-single-transmit (Dual-Rx/Single-Tx) capability.
  • Single-receive-single-transmit Single-Rx/Single-Tx
  • dual-receive-single-transmit Dual-Rx/Single-Tx
  • Network A means that the UE is in the RRC connected state, the RRC inactive state or the RRC idle state in the network A, and monitors the network A (receives/transmits data or signaling from the network A) at the same time period leave network A intermittently or intermittently to monitor another network (network B), for example to receive paging messages from said network B.
  • the UE may indicate to the network A the time information of leaving the network A (eg, the time information of the UE receiving the paging message of the network B) to the network A, so that the network A does not send data to the UE or schedule the UE during the time period when the UE leaves.
  • Network A and Network B can be different networks or the same network.
  • the time information of the UE leaving the network means that when the UE is working on the current network, within the time period indicated by the time information of the UE leaving the network, the current network will not schedule the UE or the UE will not schedule the UE in the UE. Data is not received from the current network or is not expected to be scheduled by the current network within the time period indicated by the time information for leaving the network.
  • the time information of the UE leaving the network is the time information that the UE reports to the network or that the UE negotiated with the network does not expect to be scheduled by the current network or does not expect to receive data from the current network.
  • the UE instructing the network to release the time information for the UE to leave the network means that the network deletes or releases the time information reported by the UE or negotiated with the UE when the UE leaves the current network, or considers it invalid or disabled.
  • the UE is scheduled or data is sent to the UE within the time period indicated by the time information for leaving the network.
  • the UE works on the network A and reports the time information of the UE leaving the network A to the network A, but the UE needs to establish an RRC connection to the network B. If the UE reports the time information of leaving the network B (for example, the time information of the UE receiving the paging message of the network B) to the network B, within the time information of leaving the network B indicated by the UE, the network B will not send data or not to the UE. Schedule the UE. If the UE indicates both the time information for leaving network A and the time information for leaving network B to network A, the two time information may overlap. During the overlapping time period, neither network A nor network B Sending data to the UE or not scheduling the UE will reduce the throughput of the UE. The present disclosure will provide embodiments to address this problem.
  • the following describes an embodiment in which the UE instructs the network A to release the time information when the UE leaves the network A.
  • FIG. 1 is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present invention.
  • the RRC layer of the UE constructs an RRC message, for example, the RRC message is an RRC connection setup request message RRCSetupRequest or an RRC connection continuation request message, and the RRC message carries an indication identifier (called the first RRC message). indication), used to instruct the network A to release the time information when the UE leaves the network A.
  • RRC message is an RRC connection setup request message RRCSetupRequest or an RRC connection continuation request message
  • the RRC message carries an indication identifier (called the first RRC message). indication), used to instruct the network A to release the time information when the UE leaves the network A.
  • the indication identifier is the parameter EstablishmentCause carried in the RRC connection establishment request message, and the value of the parameter is a predefined value used to instruct the network A to release the time information when the UE leaves the network A, for example, the value is AbsencePeriodRelease
  • the indication mark is the parameter ResumeCause carried in the RRC connection continuation request message, and the value of the parameter is a predefined value for instructing the network A to release the time information of the UE leaving the network A, such as a value AbsencePeriodRelease (same value as EstablishmentCause can be set).
  • step 103 the UE submits the request message to the lower layer for transmission.
  • the UE receives a response message from the network. If the UE sends an RRC connection establishment request message, the response message may be an RRC connection rejection message RRCReject; if the UE sends an RRC connection continuation request message, the response message may be an RRC connection release message RRCRelease.
  • the UE after receiving the response message (the RRC layer of the UE sends the request message and receives the response message), the UE sends a second indication to the upper layer (for example, the NAS layer), which is used to indicate that the UE has requested the network A to release the UE from the network.
  • the upper layer for example, the NAS layer
  • the time information of A or the UE successfully instructs the network A to release the time information of the UE leaving the network A or the network A successfully releasing the time information of the UE leaving the network A.
  • the UE after receiving the indication from the lower layer that the request message is successfully sent, the UE sends a second indication to the upper layer (for example, the NAS layer), which is used to indicate that the UE has requested the network A to release the time information of the UE leaving the network A or the UE.
  • the upper layer for example, the NAS layer
  • the network A is successfully instructed to release the time information of the UE leaving the network A or the network A has successfully released the time information of the UE leaving the network A.
  • the parameter EstablishmentCause is used to provide the establishment cause for the RRC connection request provided by the upper layer (provides the establishment cause for the RRC conncention request as provided by upper layers); the parameter ResumeCause is used to provide the continuation reason for the RRC connection continuation request provided by the upper layer (provides the resume cause for the RRC connection resume request as provided by the upper layers).
  • the following describes an embodiment in which the NAS layer of the network A on the UE side sends an instruction to release the time information of the UE leaving the network A to the RRC layer.
  • the RRC layer receives a request from an upper layer (such as a NAS layer) to establish an RRC connection or a request from an upper layer to resume a suspended RRC connection, where the upper layer provides the reason for establishing an RRC connection or continuing the RRC connection It instructs the network to release the time information that the UE leaves the current network, such as AbsencePeriodRelease (the same value as the value carried in the RRC connection establishment request message RRCSetupRequest or the RRC connection continuation request message, see specifically the UE instructing the network A to release the time information of the UE leaving the network A. example).
  • AbsencePeriodRelease the same value as the value carried in the RRC connection establishment request message RRCSetupRequest or the RRC connection continuation request message, see specifically the UE instructing the network A to release the time information of the UE leaving the network A. example).
  • the RRC layer constructs the RRC connection establishment request message RRCSetupRequest or the RRC connection continuation request message, and sets the parameter EstablishmentCause or the parameter ResumeCause to the value indicated by the upper layer. For details, see the embodiment in which the UE instructs the network A to release the time information of the UE leaving the network A.
  • the following describes an embodiment in which the RRC layer for the network A indicates to the upper layer the time information negotiated with the network A to leave the network A.
  • the RRC layer of the UE receives an RRC connection rejection message or an RRC connection release message RRCRelease from the network, and the message includes an indication, which can be used to instruct the UE network to support the continued use of the negotiated or reported UE leaving
  • the time information of the current network or the time information of the UE leaving the current network indicates that the upper layer (such as the NAS layer) the network supports continuing to use the negotiated or reported time information of the UE leaving the current network or the UE has negotiated with the current network to leave the current network. Network time information.
  • the RRC connection release message RRCRelease contains the indicator (or the value of the indicator is the first value), it means that the network supports continuing to use the negotiated or reported UE to leave the current network.
  • time information if the RRC connection release message RRCRelease does not contain the indicator (or contains the indicator and its value is the second value), it means that the network does not support the continued use of the negotiated or UE-reported
  • the RRC layer may indicate that the upper layer network does not support continuing to use the negotiated or reported time information of the UE leaving the current network or the UE has not negotiated the time information with the current network to leave the current network.
  • the following describes an embodiment based on hopping (Hopping) to avoid the conflict of sending and receiving data between network A and network B by the UE.
  • Hopping hopping
  • the base station receives a request message for paging the UE from the core network, and if the request message carries a third indicator, the base station sends a paging message to the UE at the first paging moment (Paging Occasion, PO), If the request carries the fourth indicator (or the request does not carry the third indicator), the base station sends a paging message to the UE at the second paging moment.
  • the fourth indicator may be an explicit indicator different from the third indicator, or may be an implicit indicator, that is, when the request message does not carry the third indicator, it means that A fourth indicator is carried.
  • FIG. 2 is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present invention.
  • step 201 the UE receives a system information message from a base station.
  • the system information message includes a fifth indicator
  • the fifth indication flag may also be used to instruct the UE to calculate the parameters required by the first paging moment.
  • the UE calculates PF and PO based on the parameters indicated by the fifth indication identifier.
  • the PF and PO calculated by the UE according to the fifth referential identifier are different or may be different from the PF and PO corresponding to the second paging moment.
  • the paging message is detected/acquired at the first paging moment, otherwise, the paging message is detected/acquired at the second paging moment.
  • the second paging moment is the paging moment calculated according to the method defined in paging in Section 7 of TS38.304.
  • the paging frame (Paging Frame, PF) at the second paging moment is determined by the SFN of the following formula:
  • the index (i_s) used to indicate the PO is determined by (Index(i_s), indicating the index of the PO is determined by):
  • i_s floor(UE_ID/N)mod Ns
  • the method for determining PO according to the index (i_s) is defined in TS38.304.
  • the first paging moment is hopping based paging.
  • the following provides an embodiment of calculating the first paging moment of the UE.
  • the calculation method of the PF and PO based on the hopping mode is related to the system frame number, specifically:
  • the paging frame PF at the first paging moment is the SFN determined by the following formula:
  • the index (i_s) used to indicate the PO is determined by (Index(i_s), indicating the index of the PO is determined by):
  • i_s (floor(UE_ID/N)mod Ns+SFN mod Ns)mod Ns
  • SFN is the system frame number
  • PF_offset is the paging frame offset, used to determine the paging frame
  • T is the UE's discontinuous reception cycle (DRX cycle), the value of which is determined by the RRC or the UE-specific DRX configured by the upper layer.
  • the value is the smaller of the default DRX value broadcast in the system information (DRX cycle of the UE(Ti is determined by the shortest of the UE specific DRX value(s), if configured by RRC and/or upper layers , and a default DRX value broadcast in system information).
  • N is the total number of paging frames in T (number of total paging frames in T), UE_ID is 5G-S-TMSI mod 1024, Ns is the number of POs in a PF (number of paging occurrences for a PF).
  • mod is a modulo operation
  • div is a division
  • * is a multiplication
  • floor is a round down.
  • the NAS layer may be replaced by an entity in the core network that processes related procedures, such as the access and mobility management function AMF.
  • the RRC layer or the NAS layer for the network A refers to the peer layer of the RRC layer or the NAS layer of the network A, and the layer and the entity may be used interchangeably.
  • UEs working in network A UEs supporting multiple USIM cards, UEs configured with multiple USIM cards, UEs that are not available for lower layer transmission of network B, UEs that network B Tx/Rx are unavailable, and network indications It supports UE access with multiple USIM cards and the UE is a UE that supports multiple USIM cards, the UE is configured to report the time information of leaving the current network, supports the reporting of the time information of leaving the current network, supports the UE that dynamically switches between different networks, shares Tx and /or Rx UE, these expressions are used interchangeably.
  • the resumeCause field is included in the RRC connection continuation request message for requesting to resume a suspended (suspended) RRC connection, and it provides a continuation reason for sending the RRC connection continuation request (it provides the resume cause for the RRC connenction resume request)
  • a UE with multiple USIM cards means that the UE includes two or more USIM cards, and accesses or accesses or registers or resides in different or the same network respectively. For example, one of the USIM cards subscribes to network A, and the other USIM card subscribes to network B. The UE is scheduled or communicated with the network on the two networks according to its registered USIM card information or access information.
  • the UE supporting multiple USIM cards may also be referred to as a UE sharing one Tx, or a UE sharing a pair of Rx and Tx. A pair of Rx and Tx includes one Rx and one Tx.
  • RRC, RRC entity, and RRC layer can be used interchangeably, and NAS, NAS entity, and NAS layer can be used interchangeably.
  • NAS, NAS entity, and NAS layer can be used interchangeably.
  • FIG. 3 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. 3 is a block diagram showing a user equipment UE according to the present invention.
  • the user equipment UE30 includes a processor 301 and a memory 302 .
  • the processor 301 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like.
  • the memory 302 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 302 has program instructions stored thereon. When the instruction is executed by the processor 301, the above method described in detail in the present invention and executed by the user equipment can be executed.
  • FIG. 4 is used to describe a base station that can execute the method performed by the base station described above in the present invention as a variant.
  • FIG. 4 is a block diagram showing a base station according to the present invention.
  • the base station 40 includes a processor 401 and a memory 402 .
  • the processor 401 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like.
  • the memory 402 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.
  • Program instructions are stored on the memory 402 . When the instruction is executed by the processor 401, the above-mentioned method performed by the base station described in detail in the present invention can be executed.
  • the base station communicates with a user equipment UE capable of performing multi-network association with at least a first communication network and a second communication network, and receives a request message from the UE operating in the first communication network , the request message includes a first indication for instructing the first communication network to release the time information for the UE to leave the first communication network; and sending response information for the request message to the UE.
  • the second communication network may be different from the first communication network, or the first communication network and the second communication network may be the same network.
  • the base station sends a system information message to the user equipment UE; and when the UE receives the system information message, the above-mentioned method shown in FIG. 2 is executed.
  • the computer-executable instructions or programs running on the apparatus according to the present disclosure may be programs that cause the computer to implement the functions of the embodiments of the present disclosure by controlling a central processing unit (CPU).
  • the program or information processed by the program may be temporarily stored in volatile memory (such as random access memory RAM), a hard disk drive (HDD), nonvolatile memory (such as flash memory), or other memory systems.
  • Computer-executable instructions or programs for implementing the functions of various embodiments of the present disclosure may be recorded on a computer-readable storage 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” as used herein may be a computer system embedded in the device, and may include an operating system or hardware (eg, 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 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 to replace existing integrated circuits, one or more embodiments of the present disclosure may also be implemented using these new integrated circuit technologies.

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Abstract

根据本发明，提出了一种由至少能够与第一通信网络和第二通信网络进行多网络关联的用户设备UE执行的方法，包括：工作于所述第一通信网络的所述UE构建请求消息，所述请求消息包括用于指示所述第一通信网络释放所述UE离开所述第一通信网络的时间信息的第一指示；以及向所述第一通信网络发送所述请求消息。

Description

用户设备、基站及其方法 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、基站及其方法。
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，如果注册到两个或两个以上网络的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。3GPP标准化的好处在于其可以基于可预测的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解决通过不同的USIM卡关联到两个网络(网络A和网络B)的UE在接收来自两个网络的寻呼发生冲突的问题，其中网络A可以是NR，网络B可以是LTE或NR，且UE单收单发(Single-Rx/Single-Tx)；该工作项目的另一个目标是定义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
为了解决上述问题中的至少一部分，本发明提供了一种用户设备、基站及其方法，能够避免采用多网络关联方式的用户设备在接收来自多个网络的寻呼时发生冲突。
为了实现上述目的，根据本发明，提出了一种由至少能够与第一通信网络和第二通信网络进行多网络关联的用户设备UE执行的方法，包括：工作于所述第一通信网络的所述UE构建请求消息，所述请求消息包括用于指示所述第一通信网络释放所述UE离开所述第一通信网络的时间信息的第一指示；以及向所述第一通信网络发送所述请求消息。
优选地，所述方法还包括：从所述第一通信网络接收针对所述请求消息的应答信息。
优选地，所述请求消息为无线资源控制RRC连接建立请求消息或者RRC连接继续请求消息，针对所述RRC连接建立请求消息的所述应答消息为RRC连接拒绝消息，针对所述RRC连接继续请求消息的所述应答消息是RRC连接释放消息。
优选地，所述UE离开所述第一通信网络的时间信息是根据将要接收来自所述第二通信网络的寻呼消息的时间信息而预先确定的。
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：接收来自基站的系统信息消息；以及如果所述系统信息消息包括用于指示基站能够支持对采用多网络关联方式的UE的寻呼的第一指示，并且所述UE支持所述多网络关联方式或工作在所述多网络关联方式下，则所述UE在第一寻呼时刻检测并获取寻呼消息，否则，所述UE在第二寻呼时刻检测并获取寻呼消息。
优选地，所述第一寻呼时刻是基于跳跃方式的寻呼时刻，所述第一寻呼时刻的寻呼帧基于在相应通信网络中给出的系统帧号和寻呼帧偏移来确定。
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。
另外，根据本发明，提出了一种由基站执行的方法，所述基站与至少能够与第一通信网络和第二通信网络进行多网络关联的用户设备UE进行通信，所述方法包括：从工作于所述第一通信网络的所述UE接收请求消息，所述请求消息包括用于指示所述第一通信网络释放所述UE离开所述第一通信网络的时间信息的第一指示；以及向所述UE发送针对所述请求消息的应答信息。
此外，根据本发明，提出了一种由基站执行的方法，包括：向用户设备UE发送系统信息消息；以及所述UE在接收到所述系统信息消息时，执行上述的方法。
另外，根据本发明，提出了一种基站，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。
发明效果
根据如上所述的本发明，能够避免采用多网络关联方式的用户设备在接收来自多个网络的寻呼时发生冲突。
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是示出了根据本发明的实施例一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二的由用户设备执行的方法的流程图。
图3是示意性示出本发明所涉及的用户设备的框图。
图4是示意性示出本发明所涉及的基站的框图。
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。
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。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卡对应的UE。配置了多USIM卡的用户设备可以通过时分复用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。
本公开中，具有多个USIM卡的用户设备UE具有单收单发(Single-Rx/Single-Tx)或双收单发(Dual-Rx/Single-Tx)能力。多个USIM对应的不同UE共用一对Tx和Rx或共用一个Tx但分别具有各自的Rx。
本公开中，UE工作在一个网络(网络A)是指UE在网络A处于RRC连接态或RRC非激活态或RRC空闲态，监测网络A(从网络A收/发数据 或信令)同时周期性或间歇性的离开网络A去监测另一个网络(网络B)，例如去接收来自所述网络B的寻呼消息。UE可将离开网络A的时间信息(例如UE接收网络B的寻呼消息的时间信息)的指示给网络A，使得网络A在UE离开的时间段内不向UE发送数据或不调度UE。网络A和网络B可以是不同的网络，也可以是同一个网络。
在本公开中，UE离开网络的时间信息是指当UE工作在当前网络时，在所述UE离开网络的时间信息指示的时间段内，当前网络将不调度所述UE或者UE在所述UE离开网络的时间信息指示的时间段内不从当前网络接收数据或不期望被当前网络调度。UE离开网络的时间信息是UE上报网络或UE与网络协商的UE不期望被当前网络调度的或不期望从当前网络接收数据的时间信息。UE指示网络释放UE离开网络的时间信息是指网络将UE上报或与UE协商的UE离开当前网络的时间信息删除或释放或认为失效或禁用，此时，网络在调度UE时可以在所述UE离开网络的时间信息指示的时间段内调度UE或向UE发送数据。
下面考虑以下场景，UE工作在网络A且向网络A报告了UE离开网络A的时间信息，但是，UE需要向网络B建立RRC连接。如果UE将离开网络B的时间信息(例如UE接收网络B的寻呼消息的时间信息)报告给网络B，在UE指示的离开网络B的时间信息内，网络B将不向UE发送数据或不调度UE。如果UE既向网络A指示了离开网络A的时间信息又向网络B指示了离开网络B的时间信息，这两个时间信息可能存在重叠，在重叠的时间段内，网络A和网络B都不向UE发送数据或不调度UE，这将降低UE的吞吐量。本公开将提供实施例解决这一问题。
以下描述UE指示网络A释放UE离开网络A的时间信息的实施例。
图1是示出了根据本发明的实施例一的由用户设备执行的方法的流程图。
如图1所示，在步骤101，UE的RRC层构建RRC消息，例如所述RRC消息是RRC连接建立请求消息RRCSetupRequest或RRC连接继续请求消息，所述RRC消息中携带指示标识(称为第一指示)，用于指示网络A释放UE离开网络A的时间信息。例如，所述指示标识是在RRC连接建立请求消息中携带的参数EstablishmentCause，所述参数的取值是预定义的用于指示网络A释放UE离开网络A的时间信息的值，例如取值为 AbsencePeriodRelease；又例如，所述指示标识是在RRC连接继续请求消息中携带的参数ResumeCause，所述参数的取值是预定义的用于指示网络A释放UE离开网络A的时间信息的值，例如取值为AbsencePeriodRelease(与EstablishmentCause可以设置相同的取值)。
然后，在步骤103，UE将所述请求消息递交(submit)给下层用于传输。
可选的，UE接收来自网络的应答消息。如果UE发送的是RRC连接建立请求消息，所述应答消息可以是RRC连接拒绝消息RRCReject；如果UE发送的是RRC连接继续请求消息，所述应答消息可以是RRC连接释放消息RRCRelease。
可选的，UE在接收到所述应答消息后(UE的RRC层发送请求消息并接收应答消息)向上层(例如NAS层)发送第二指示，用于指示UE已经请求网络A释放UE离开网络A的时间信息或UE成功指示网络A释放UE离开网络A的时间信息或网络A成功释放了UE离开网络A的时间信息。
可选的，UE在接收到来自下层的所述请求消息发送成功的指示后向上层(例如NAS层)发送第二指示，用于指示UE已经请求网络A释放UE离开网络A的时间信息或UE成功指示网络A释放UE离开网络A的时间信息或网络A成功释放了UE离开网络A的时间信息。
本公开中，参数EstablishmentCause用于提供上层提供的RRC连接请求的建立原因(provides the establishement cause for the RRC conncention request as provided by upper layers)；参数ResumeCause用于提供上层提供的RRC连接继续请求的继续原因(provides the resume cause for the RRC connection resume request as provided by the upper layers)。
以下描述UE侧针对网络A的NAS层向RRC层发送释放UE离开网络A的时间信息的指示的实施例。
RRC层接收来自上层(例如NAS层)的建立RRC连接的请求或接收来自上层的继续(Resume)一个挂起(suspended)的RRC连接的请求，其中上层提供的建立RRC连接或继续RRC连接的原因是指示网络释放UE离开当前网络的时间信息，例如为AbsencePeriodRelease(与RRC连接建立请求消息RRCSetupRequest或RRC连接继续请求消息中携带的值相同，具体见UE指示网络A释放UE离开网络A的时间信息的实施例)。RRC层构建 RRC连接建立请求消息RRCSetupRequest或RRC连接继续请求消息，并设置参数EstablishmentCause或参数ResumeCause为上层指示的值，具体见UE指示网络A释放UE离开网络A的时间信息的实施例。
以下描述针对网络A的RRC层向上层指示与网络A协商的离开网络A的时间信息的实施例。
UE的RRC层接收到来自网络的RRC连接拒绝消息或RRC连接释放消息RRCRelease，所述消息中包含一个指示标识，所述指示标识可以用于指示UE网络支持继续使用协商的或UE上报的UE离开当前网络的时间信息或UE离开当前网络的时间信息，RRC层指示上层(例如NAS层)网络支持继续使用协商的或UE上报的UE离开当前网络的时间信息或UE已经与当前网络协商了离开当前网络的时间信息。可选的，如果所述RRC连接释放消息RRCRelease中包含所述指示标识(或所述指示标识的取值为第一取值)，则表示网络支持继续使用协商的或UE上报的UE离开当前网络的时间信息；如果所述RRC连接释放消息RRCRelease中不包含所述指示标识(或包含所述指示标识且其取值是第二取值)，则表示网络不支持继续使用协商的或UE上报的UE离开当前网络的时间信息，则RRC层可指示上层网络不支持继续使用协商的或UE上报的UE离开当前网络的时间信息或UE未与当前网络协商离开当前网络的时间信息。
以下描述基于跳跃(Hopping)的避免UE在网络A和网络B发生收发数据冲突的实施例。
首先，基站接收来自核心网的对UE进行寻呼的请求消息，如果所述请求消息中携带第三指示标识，则基站在第一寻呼时刻(Paging Occasion，PO)向UE发送寻呼消息，如果所述请求中携带第四指示标识(或所述请求中未携带第三指示标识)，则基站在第二寻呼时刻向UE发送寻呼消息。需要说明的是，所述第四指示标识可以是不同于第三指示标识的一个显式的指示标识，也可以是隐式指示标识，即当所述请求消息中没有携带第三指示标识则表示携带了第四指示标识。
图2是示出了根据本发明的实施例二的由用户设备执行的方法的流程图。
如图2所示，在步骤201，UE接收来自基站的系统信息消息。
在步骤203，如果所述系统信息消息中包含第五指示标识，表示基站支持针对支持MUSIM的UE的寻呼，或者基站支持两种寻呼时刻的计算方式，或者基站支持基于跳跃的寻呼时刻计算方式，或基站支持第一寻呼时刻。所述第五指示标识也可以用于指示UE计算第一寻呼时刻所需要的参数。UE基于所述第五指示标识指示的参数计算PF和PO。UE根据第五是指标识计算得到的PF和PO与第二寻呼时刻对应的PF和PO不同或可能不同。
此时，如果UE支持MUSIM或工作在MUSIM方式下，则在第一寻呼时刻检测/获取寻呼消息，否则，在第二寻呼时刻检测/获取寻呼消息。
在本公开中，第二寻呼时刻是按照目前TS38.304第7节寻呼中定义的方式计算得到的寻呼时刻。第二寻呼时刻的寻呼帧(Paging Frame，PF)由以下公式确定的SFN：
(SFN+PF_offset)mod T＝(T div N)*(UE_ID mod N)
用于指示PO的索引(i_s)由以下确定(Index(i_s)，indicating the index of the PO is determined by)：
i_s＝floor(UE_ID/N)mod Ns
本公开中，根据索引(i_s)确定PO的方法见TS38.304中定义。
在本公开中，所述第一寻呼时刻是基于跳跃方式的寻呼。以下给出计算UE的第一寻呼时刻的实施例，以下实施例中，基于跳跃方式的PF和PO的计算方法与系统帧号相关，具体的：
第一寻呼时刻的寻呼帧PF由以下公式确定的SFN：
(SFN+PF_offset)mod T＝((T div N)*(UE_ID mod N))mod N
用于指示PO的索引(i_s)由以下确定(Index(i_s)，indicating the index of the PO is determined by)：
i_s＝(floor(UE_ID/N)mod Ns+SFN mod Ns)mod Ns
本公开中，SFN是系统帧号，PF_offset是寻呼帧偏移，用于确定寻呼帧，T是UE的非连续接收周期(DRX cycle)，其值由RRC或上层配置的UE特定的DRX值于系统信息中广播的缺省DRX值两者中的较小者(DRX cycle of the UE(T is determined by the shortest of the UE specific DRX value(s)，if configured by RRC and/or upper layers，and a default DRX value  broadcast in system information)。N是在T内的寻呼帧的总数(number of total paging frames in T)，UE_ID是5G-S-TMSI mod 1024，Ns是一个PF内PO数(number of paging occasions for a PF)。
本公开中，mod是模运算，div是除以，*是乘以，floor是向下取整。
需要说明的是，本公开中NAS层可以用核心网中处理相关过程的实体代替，例如接入和移动管理功能AMF。
在本公开实施例中，针对网络A的RRC层或NAS层是指网络A的RRC层或NAS层的对等层，层与实体可互换使用。
本公开实施例中，工作在网络A的UE、支持多USIM卡的UE、被配置了多USIM卡的UE、网络B下层传输不可用的UE、网络B Tx/Rx不可用的UE、网络指示其支持多USIM卡UE接入且UE是支持多USIM卡的UE、UE被配置上报离开当前网络的时间信息、支持上报离开当前网络时间信息、支持在不同网络间动态切换的UE、共享Tx和/或Rx的UE，这些表述可互换使用。
在本公开实施例中，所述resumeCause字段包含在用于请求继续(resumeption)一个挂起(suspended)的RRC连接的RRC连接继续请求消息中，它提供了发送RRC连接继续请求的继续理由(it provides the resume cause for the RRC connenction resume request)
本公开中，多USIM卡的UE是指UE中包含两张或两张以上USIM卡，并且分别接入或访问或注册或驻留到不同或相同的网络。例如，其中一张USIM卡订阅网络A，另一张USIM卡订阅网络B。UE在这两个网络上按照其注册的USIM卡信息或接入信息分别被网络调度或与网络通信。所述支持多USIM卡的UE也可以称为共用一个Tx的UE，或共用一对Rx和Tx的UE。一对Rx和Tx包括一个Rx和一个Tx。
本公开实施例中，RRC、RRC实体、RRC层可互换使用，NAS、NAS实体、NAS层可互换使用，本领域技术人员根据上下文信息可以很容易推断这些词语表示的含义。
[变形例]
下面，利用图3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3是表示本发明所涉及的用户设备UE的框图。
如图3所示，该用户设备UE30包括处理器301和存储器302。处理器301例如可以包括微处理器、微控制器、嵌入式处理器等。存储器302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302上存储有程序指令。该指令在由处理器301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。
下面，利用图4来说明作为一种变形例的可执行本发明上面所描述的基站执行的方法的基站。
图4是表示本发明所涉及的基站的框图。
如图4所示，该基站40包括处理器401和存储器402。处理器401例如可以包括微处理器、微控制器、嵌入式处理器等。存储器402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402上存储有程序指令。该指令在由处理器401运行时，可以执行本发明详细描述的由基站执行的上述方法。
具体地，对应于实施例一，基站与至少能够与第一通信网络和第二通信网络进行多网络关联的用户设备UE进行通信，从工作于所述第一通信网络的所述UE接收请求消息，所述请求消息包括用于指示所述第一通信网络释放所述UE离开所述第一通信网络的时间信息的第一指示；以及向所述UE发送针对所述请求消息的应答信息。所述第二通信网络可以不同于所述第一通信网络，或者第一通信网络和第二通信网络可以是同一网络。
对应于实施例二，基站向用户设备UE发送系统信息消息；以及所述UE在接收到所述系统信息消息时，执行上述的图2所示的方法。
另外，运行在根据本公开的设备上的计算机可执行指令或者程序可以是通过控制中央处理单元(CPU)来使计算机实现本公开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 (10)

  1. 一种由至少能够与第一通信网络和第二通信网络进行多网络关联的用户设备UE执行的方法，包括：
    工作于所述第一通信网络的所述UE构建请求消息，所述请求消息包括用于指示所述第一通信网络释放所述UE离开所述第一通信网络的时间信息的第一指示；以及
    向所述第一通信网络发送所述请求消息。
  2. 根据权利要求1所述的方法，还包括：
    从所述第一通信网络接收针对所述请求消息的应答信息。
  3. 根据权利要求1所述的方法，其中，
    所述请求消息为无线资源控制RRC连接建立请求消息或者RRC连接继续请求消息，
    针对所述RRC连接建立请求消息的所述应答消息为RRC连接拒绝消息，针对所述RRC连接继续请求消息的所述应答消息是RRC连接释放消息。
  4. 根据权利要求1所述的方法，其中，
    所述UE离开所述第一通信网络的时间信息是根据将要接收来自所述第二通信网络的寻呼消息的时间信息而预先确定的。
  5. 一种由用户设备UE执行的方法，包括：
    接收来自基站的系统信息消息；以及
    如果所述系统信息消息包括用于指示基站能够支持对采用多网络关联方式的UE的寻呼的第一指示，并且所述UE支持所述多网络关联方式或工作在所述多网络关联方式下，则所述UE在第一寻呼时刻检测并获取寻呼消息，否则，所述UE在第二寻呼时刻检测并获取寻呼消息。
  6. 根据权利要求5所述的方法，其中，
    所述第一寻呼时刻是基于跳跃方式的寻呼时刻，所述第一寻呼时刻的寻呼帧基于在相应通信网络中给出的系统帧号和寻呼帧偏移来确定。
  7. 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6中的任一项所述的方法。
  8. 一种由基站执行的方法，所述基站与至少能够与第一通信网络和第二通信网络进行多网络关联的用户设备UE进行通信，所述方法包括：
    从工作于所述第一通信网络的所述UE接收请求消息，所述请求消息包括用于指示所述第一通信网络释放所述UE离开所述第一通信网络的时间信息的第一指示；以及
    向所述UE发送针对所述请求消息的应答信息。
  9. 一种由基站执行的方法，包括：
    向用户设备UE发送系统信息消息；以及
    所述UE在接收到所述系统信息消息时，执行根据权利要求5所述的方法。
  10. 一种基站，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8或9所述的方法。
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