WO2021223202A1 - Restauration de service de données avec des modules d'identité d'abonné doubles - Google Patents

Restauration de service de données avec des modules d'identité d'abonné doubles Download PDF

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Publication number
WO2021223202A1
WO2021223202A1 PCT/CN2020/089129 CN2020089129W WO2021223202A1 WO 2021223202 A1 WO2021223202 A1 WO 2021223202A1 CN 2020089129 W CN2020089129 W CN 2020089129W WO 2021223202 A1 WO2021223202 A1 WO 2021223202A1
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WIPO (PCT)
Prior art keywords
sim
cell
detach
received
attach procedure
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PCT/CN2020/089129
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English (en)
Inventor
Jian Li
Hao Zhang
Fojian ZHANG
Chaofeng HUI
Meng Liu
Yun Peng
Jingnan QU
Wei He
Hong Wei
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Qualcomm Incorporated
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Priority to PCT/CN2020/089129 priority Critical patent/WO2021223202A1/fr
Publication of WO2021223202A1 publication Critical patent/WO2021223202A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06—De-registration or detaching
    • 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
    • H04W8/183—Processing at user equipment or user record carrier

Definitions

  • aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for restoring data service with dual subscriber identity modules.
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
  • Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like) .
  • multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) .
  • LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • UMTS Universal Mobile Telecommunications System
  • a wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs) .
  • a user equipment (UE) may communicate with a base station (BS) via the downlink and uplink.
  • the downlink (or forward link) refers to the communication link from the BS to the UE
  • the uplink (or reverse link) refers to the communication link from the UE to the BS.
  • a BS may be referred to as a Node B, a gNB, an access point (AP) , a radio head, a transmit receive point (TRP) , a New Radio (NR) BS, a 5G Node B, and/or the like.
  • New Radio which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • 3GPP Third Generation Partnership Project
  • NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) , using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink (UL) , as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDM e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)
  • DFT-s-OFDM discrete Fourier transform spread OFDM
  • MIMO multiple-input multiple-output
  • a method of wireless communication may include determining, for a first subscriber identity module (SIM) of the UE in a non-standalone (NSA) network, that one or more evolved packet system (EPS) bearer deactivation requests are received from a cell, based at least in part on transmitting one or more service requests to the cell.
  • SIM subscriber identity module
  • NSA non-standalone
  • EPS evolved packet system
  • the method may include performing, for the first SIM, a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell, and signaling, from the first SIM, to a second SIM of the UE to perform a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell.
  • a UE for wireless communication may include memory and one or more processors coupled to the memory.
  • the one or more processors may be operatively, electronically, communicatively, or otherwise coupled to the memory.
  • the memory may include instructions executable by the one or more processors to cause the UE to determine, for a first SIM of the UE in an NSA network, that one or more EPS bearer deactivation requests are received from a cell, based at least in part on transmitting one or more service requests to the cell, perform, for the first SIM, a detach and attach procedure with the cell based at least in part on determining that one or more EPS bearer deactivation requests are received from the cell, and signal, from the first SIM, to a second SIM of the UE to perform a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell.
  • a non-transitory computer-readable medium may store one or more instructions for wireless communication.
  • the one or more instructions when executed by one or more processors of a UE, may cause the UE to determine, for a first SIM of the UE in an NSA network, that one or more EPS bearer deactivation requests are received from a cell, based at least in part on transmitting one or more service requests to the cell, perform, for the first SIM, a detach and attach procedure with the cell based at least in part on determining that one or more EPS bearer deactivation requests are received from the cell, and signal, from the first SIM, to a second SIM of the UE to perform a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell.
  • an apparatus for wireless communication may include means for determining, for a first SIM of the apparatus in an NSA network, that one or more EPS bearer deactivation requests are received from a cell, based at least in part on transmitting one or more service requests to the cell, means for performing, for the first SIM, a detach and attach procedure with the cell based at least in part on determining that one or more EPS bearer deactivation requests are received from the cell, and means for signaling, from the first SIM, to a second SIM of the apparatus to perform a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell.
  • aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the drawings and specification.
  • Fig. 1 is a block diagram conceptually illustrating an example of a wireless communication network, in accordance with various aspects of the present disclosure.
  • Fig. 2 is a block diagram conceptually illustrating an example of a base station in communication with a user equipment (UE) in a wireless communication network, in accordance with various aspects of the present disclosure.
  • UE user equipment
  • Fig. 3 is a diagram illustrating an example of restoring data service with dual subscriber identity modules (SIMs) , in accordance with various aspects of the present disclosure.
  • SIMs subscriber identity modules
  • Fig. 4 is a diagram illustrating an example of restoring data service with dual SIMs, in accordance with various aspects of the present disclosure.
  • Fig. 5 is a diagram illustrating an example process performed, for example, by a UE, in accordance with various aspects of the present disclosure.
  • Fig. 1 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced.
  • the wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network.
  • the wireless network 100 may include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities.
  • a BS is an entity that communicates with user equipment (UEs) and may also be referred to as a base station, an NR BS, a Node B, a gNB, a 5G node B (NB) , an access point, a transmit receive point (TRP) , and/or the like.
  • Each BS may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a BS and/or a BS subsystem serving this coverage area, depending on the context in which the term is used.
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having association with the femto cell (e.g., UEs in a closed subscriber group (CSG) ) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • a BS 110a may be a macro BS for a macro cell 102a
  • a BS 110b may be a pico BS for a pico cell 102b
  • a BS 110c may be a femto BS for a femto cell 102c.
  • a BS may support one or multiple (e.g., three) cells.
  • eNB base station
  • NR BS NR BS
  • gNB gNode B
  • AP AP
  • node B node B
  • 5G NB 5G NB
  • cell may be used interchangeably herein.
  • a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS.
  • the BSs may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and/or the like using any suitable transport network.
  • Wireless network 100 may also include relay stations.
  • a relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS) .
  • a relay station may also be a UE that can relay transmissions for other UEs.
  • a relay station 110d may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d.
  • a relay station may also be referred to as a relay BS, a relay base station, a relay, and/or the like.
  • Wireless network 100 may be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/or the like. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100.
  • macro BSs may have a high transmit power level (e.g., 5 to 40 watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 watts) .
  • a network controller 130 may couple to a set of BSs and may provide coordination and control for these BSs.
  • Network controller 130 may communicate with the BSs via a backhaul.
  • the BSs may also communicate with one another, e.g., directly or indirectly via a wireless or wireline backhaul.
  • UEs 120 may be dispersed throughout wireless network 100, and each UE may be stationary or mobile.
  • a UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, and/or the like.
  • a UE may be a cellular phone (e.g., a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet) ) , an entertainment device (e.g., a music or video device, or a satellite radio) , a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.
  • PDA personal digital assistant
  • WLL wireless local loop
  • Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs.
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, and/or the like, that may communicate with a base station, another device (e.g., remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • Some UEs may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband internet of things) devices.
  • IoT Internet-of-Things
  • NB-IoT narrowband internet of things
  • UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, and/or the like.
  • the processor components and the memory components may be coupled together.
  • the processor components e.g., one or more processors
  • the memory components e.g., a memory
  • the processor components and the memory components may be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, and/or the like.
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies.
  • a RAT may also be referred to as a radio technology, an air interface, and/or the like.
  • a frequency may also be referred to as a carrier, a frequency channel, and/or the like.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • NR or 5G RAT networks may be deployed.
  • two or more UEs 120 may communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with one another) .
  • the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, and/or the like) , a mesh network, and/or the like.
  • V2X vehicle-to-everything
  • the UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station 110.
  • Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.
  • Fig. 2 shows a block diagram of a design 200 of base station 110 and UE 120, which may be one of the base stations and one of the UEs in Fig. 1.
  • Base station 110 may be equipped with T antennas 234a through 234t
  • UE 120 may be equipped with R antennas 252a through 252r, where in general T ⁇ 1 and R ⁇ 1.
  • a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS (s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and/or the like) and control information (e.g., CQI requests, grants, upper layer signaling, and/or the like) and provide overhead symbols and control symbols.
  • MCS modulation and coding schemes
  • Transmit processor 220 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS) ) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS) ) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
  • TX transmit
  • MIMO multiple-input multiple-output
  • Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
  • Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.
  • the synchronization signals can be generated with location encoding to convey additional information.
  • antennas 252a through 252r may receive the downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples.
  • Each demodulator 254 may further process the input samples (e.g., for OFDM and/or the like) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • a receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280.
  • a channel processor may determine reference signal received power (RSRP) , received signal strength indicator (RSSI) , reference signal received quality (RSRQ) , channel quality indicator (CQI) , and/or the like.
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • RSRQ reference signal received quality
  • CQI channel quality indicator
  • one or more components of UE 120 may be included in a housing.
  • a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, and/or the like) , and transmitted to base station 110.
  • modulators 254a through 254r e.g., for DFT-s-OFDM, CP-OFDM, and/or the like
  • the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120.
  • Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller/processor 240.
  • Base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244.
  • Network controller 130 may include communication unit 294, controller/processor 290, and memory 292.
  • Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with restoring data service with dual subscriber identity modules (SIMs) , as described in more detail elsewhere herein.
  • controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 500 of Fig. 5, and/or other processes as described herein.
  • Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively.
  • memory 242 and/or memory 282 may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication.
  • the one or more instructions when executed (e.g., directly, or after compiling, converting, interpreting, and/or the like) by one or more processors of the base station 110 and/or the UE 120, may perform or direct operations of, for example, process 500 of Fig. 5, and/or other processes as described herein.
  • executing instructions may include running the instructions, converting the instructions, compiling the instructions, interpreting the instructions, and/or the like.
  • a scheduler 246 may schedule UEs for data transmission on the downlink and/or uplink.
  • UE 120 may include means for determining, for a first SIM of the UE in a non-standalone (NSA) network, that one or more evolved packet system (EPS) bearer deactivation requests are received from a cell, based at least in part on transmitting one or more service requests to the cell, means for performing, for the first SIM, a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell, means for signaling, from the first SIM, to a second SIM of the UE to perform a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell, and/or the like.
  • NSA non-standalone
  • EPS evolved packet system
  • such means may include one or more components of UE 120 described in connection with Fig. 2, such as controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and/or the like.
  • Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.
  • Fig. 3 is a diagram illustrating an example 300 of restoring data service with dual SIMs, in accordance with various aspects of the present disclosure.
  • Fig. 3 shows a signaling diagram for a first SIM and a second SIM of the UE. While actions may be described as being performed by the first SIM or the second SIM, this may mean that the UE is performing the action for the first SIM or for the second SIM.
  • Either SIM may support dual SIM dual active or dual SIM dual standby, and either SIM may be associated with a default data subscriber (DDS) subscriber registration (e.g., NSA) or a non-DDS subscriber registration (e.g., LTE) .
  • DDS data subscriber
  • NSA non-DDS subscriber registration
  • the first SIM may register with an NSA network.
  • the NSA network may involve the infrastructure of an LTE network that provides access to the Internet.
  • the second SIM may also register with the NSA network or an LTE network.
  • the first SIM may be attached to a cell that may be an NSA cell, an LTE cell, an NR cell, and/or the like.
  • the cell is shown as an LTE cell.
  • the second SIM may also attach to the LTE cell.
  • the second SIM (or the UE for the second SIM) may transmit an attach request to the LTE cell, and as shown by reference number 310, the second SIM (or the UE for the second SIM) may accept the attach request.
  • the LTE cell may establish EPS bearers for the first SIM and the second SIM.
  • An EPS bearer enables the UE to transmit data to and receive data from a packet data network (PDN) to which the UE may connect.
  • PDN packet data network
  • the EPS bearer may be considered a tunnel between the UE and a packet gateway to the Internet, and the EPS bearer may be associated with a quality of service.
  • the NSA network may provide access to an NR data service.
  • the first SIM and/or the second SIM of the UE may prepare to access the NR data service by enabling dual connectivity with New Radio (DCNR) support, and the UE may transmit an indication of DCNR support in an attach request.
  • DCNR New Radio
  • the first SIM may transmit a service request to the LTE cell in order to access the NR data service.
  • the first SIM may receive an EPS bearer deactivation request, such as a deactivate EPS bearer context request.
  • the first SIM may accept the deactivate EPS bearer context request, and EPS bearers for the first SIM may be deactivated.
  • the first SIM when the first SIM requests an NR data service, data bearers are dropped and the first SIM is not able to transfer any data.
  • the first SIM may attempt to set up EPS bearers again, but another service request to the LTE cell may result in EPS data bearers being dropped again. As a result, the first SIM loses all data service.
  • the second SIM may also have problems with accessing the NR data service.
  • the second SIM may also receive deactivate EPS bearer context requests after transmitting service requests to the LTE cell. In that case, both the first SIM and the second SIM may lose data service.
  • the first SIM may recognize the problem with the LTE cell and perform a detach and attach procedure to fall back to LTE only (or some other data service than the NR data service) .
  • the first SIM may transmit a detach request to the LTE cell.
  • the first SIM may receive a detach accept message.
  • the first SIM may transmit an attach request to the LTE cell.
  • the attach request may indicate no support for DCNR. Indicating no support for DCNR enables the first SIM to restore data service with LTE only and not NR.
  • the first SIM may receive an attach accept message. However, while the first SIM (or the UE for the first SIM) restores the data service, the second SIM may cause the UE to waste time, power, processing resources, and signaling resources losing EPS bearers and having to recognize that there are issues with accessing the NR data service with the LTE cell.
  • the first SIM may signal to the second SIM that the second SIM should fall back to LTE only.
  • the second SIM may help the UE to save the time, power, processing resources, and signaling resources involved with losing EPS bearers and recognizing there is a problem with the NR data service.
  • the second SIM may instead proceed directly with falling back to LTE only. For example, if the first SIM determines that transmitting service requests results in receiving deactivate EPS bearer context requests, the first SIM may casue the UE perform the detach and attach procedure without DCNR support.
  • the first SIM may cause the UE to perform the detach and attach procedure based at least in part on a determination that a count of EPS bearer deactivation requests satisfies a deactivation request threshold.
  • the first SIM may signal to the second SIM to also proceed with falling back to LTE only, as shown by reference number 350.
  • This (fallback) signaling may be a flag or a synchronization message, such as a fallback to LTE (4G) synchronization request (shown in Fig. 3) .
  • the second SIM may cause the UE to perform a detach and attach procedure similar to the detach and attach procedure performed for the first SIM. As shown by reference number 355, the second SIM may cause the UE to transmit a detach request to the LTE cell. As shown by reference number 360, the second SIM may receive a detach accept message. As shown by reference number 365, the second SIM may cause the UE to transmit an attach request to the LTE cell, indicating no support for DCNR. As shown by reference number 370, the second SIM may receive an attach accept message. As a result of the detach and attach procedures, the first SIM and the second SIM may have restored data service with the LTE cell.
  • Fig. 3 is provided as an example. Other examples may differ from what is described with respect to Fig. 3.
  • Fig. 4 is a diagram illustrating an example 400 of restoring data service with dual SIMs, in accordance with various aspects of the present disclosure.
  • Fig. 4 shows some signals from the signaling diagram of Fig. 3.
  • the second SIM may receive fallback signaling from the first SIM but not fall back to LTE only right away, as shown by reference number 405. Instead, the second SIM may cause the UE to transmit a service request to the LTE cell, as shown by reference number 410, in one attempt to obtain the NR data service.
  • the second SIM may have a different configuration or capability than the first SIM, and the different configuration or capability may give the second SIM a better chance of successfully obtaining the NR data service.
  • the second SIM may take advantage of the fallback signaling from the first SIM and proceed directly with causing the UE to perform the detach and attach procedure to fall back to LTE only.
  • the second SIM may receive a deactivate EPS bearer context request, and as shown by reference number 420, the second SIM may accept the deactivate EPS bearer context request. The second SIM may then proceed with the detach and accept message, indicating no DCNR support.
  • the second SIM may count each deactivate EPS bearer context request and determine whether the count satisfies a count threshold (e.g., maximum count) . If the UE transmits multiple service requests for the second SIM after receiving the fallback signaling from the first SIM, the second SIM may proceed with falling back to LTE only before reaching a count threshold (e.g., maximum count) that was used by the first SIM. In this way, the second SIM causes the UE to still expend less resources attempting to obtain the NR data service with the LTE cell than if the second SIM never received the fallback signaling from the first SIM.
  • a count threshold e.g., maximum count
  • Fig. 4 is provided as an example. Other examples may differ from what is described with respect to Fig. 4.
  • Fig. 5 is a diagram illustrating an example process 500 performed, for example, by a UE, in accordance with various aspects of the present disclosure.
  • Example process 500 is an example where the UE (e.g., a UE 120 depicted in Figs. 1 and 2, the UE depicted in Figs. 3 and 4, and/or the like) performs operations associated with restoring data service with dual SIMs.
  • the UE e.g., a UE 120 depicted in Figs. 1 and 2, the UE depicted in Figs. 3 and 4, and/or the like
  • process 500 may include determining, for a first SIM of the UE in an NSA network, that one or more EPS bearer deactivation requests are received from a cell, based at least in part on transmitting one or more service requests to the cell (block 510) .
  • the UE e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, and/or the like
  • process 500 may include performing, for the first SIM, a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell (block 520) .
  • the UE e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, and/or the like
  • process 500 may include signaling, by the first SIM, to a second SIM of the UE to perform a detach and attach procedure with the cell based at least in part on the determining that one or more EPS bearer deactivation requests are received from the cell (block 530) .
  • the UE e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, and/or the like
  • Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • performing, for the first SIM, the detach and attach procedure includes transmitting a detach request and transmitting an attach request that indicates that the first SIM does not support DCNR.
  • process 500 includes performing, for the second SIM, the detach and attach procedure with the cell based at least in part on the signaling from the first SIM.
  • performing, for the second SIM, the detach and attach procedure includes transmitting a detach request and transmitting an attach request that indicates that the second SIM does not support DCNR.
  • process 500 includes transmitting, for the second SIM, a service request to the cell based at least in part on the signaling from the first SIM.
  • process 500 includes performing, for the second SIM, the detach and attach procedure with the cell based at least in part on receiving an EPS bearer deactivation request from the cell after transmitting the service request.
  • performing, for the second SIM, the detach and attach procedure includes transmitting a detach request to the cell and transmitting an attach request that indicates that the second SIM does not support DCNR.
  • performing, for the first SIM, the detach and attach procedure includes performing the detach and attach procedure based at least in part on determining that a count of the one or more EPS bearer deactivation requests received from the cell satisfies a deactivation request threshold.
  • process 500 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 5. Additionally, or alternatively, two or more of the blocks of process 500 may be performed in parallel.
  • the term “component” is intended to be broadly construed as hardware, software, and/or a combination of hardware and software.
  • a processor is implemented in hardware, software, and/or a combination of hardware and software.
  • Software is to be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and/or the like, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and/or the like.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .
  • the terms “has, ” “have, ” “having, ” and/or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Divers aspects de la présente invention concernent de manière générale des communications sans fil. Selon certains aspects, un équipement d'utilisateur (UE) peut déterminer, pour un premier module d'identité d'abonné (SIM) de l'UE dans un réseau non autonome, qu'une ou plusieurs demandes de désactivation de support de système de paquet évolué (EPS) sont reçues d'une cellule, sur la base au moins en partie de la transmission d'une ou de plusieurs demandes de service à la cellule. L'UE peut réaliser, pour le premier SIM, une procédure de détachement et de rattachement avec la cellule sur la base au moins en partie du fait de déterminer qu'une ou plusieurs demandes de désactivation de support EPS sont reçues de la cellule, et signaler, depuis le premier SIM, à un second SIM de l'UE de réaliser une procédure de détachement et de rattachement avec la cellule. La divulgation concerne également de nombreux autres aspects.
PCT/CN2020/089129 2020-05-08 2020-05-08 Restauration de service de données avec des modules d'identité d'abonné doubles WO2021223202A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106028402A (zh) * 2016-04-29 2016-10-12 青岛海信移动通信技术股份有限公司 一种多卡终端的标识卡处理方法及多卡终端
WO2018231813A1 (fr) * 2017-06-13 2018-12-20 Intel IP Corporation Systèmes, procédés et dispositifs de reprise d'un système existant dans un système de communication sans fil
WO2019205723A1 (fr) * 2018-04-28 2019-10-31 华为技术有限公司 Appareil et procédé de communication sans fil
CN110418436A (zh) * 2019-07-25 2019-11-05 中国联合网络通信集团有限公司 一种移动终端双卡重新关联的方法及系统

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CN106028402A (zh) * 2016-04-29 2016-10-12 青岛海信移动通信技术股份有限公司 一种多卡终端的标识卡处理方法及多卡终端
WO2018231813A1 (fr) * 2017-06-13 2018-12-20 Intel IP Corporation Systèmes, procédés et dispositifs de reprise d'un système existant dans un système de communication sans fil
WO2019205723A1 (fr) * 2018-04-28 2019-10-31 华为技术有限公司 Appareil et procédé de communication sans fil
CN110418436A (zh) * 2019-07-25 2019-11-05 中国联合网络通信集团有限公司 一种移动终端双卡重新关联的方法及系统

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