WO2021207911A1 - Seuil de signal de radiomessagerie pour des communications à abonnements multiples - Google Patents

Seuil de signal de radiomessagerie pour des communications à abonnements multiples Download PDF

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Publication number
WO2021207911A1
WO2021207911A1 PCT/CN2020/084601 CN2020084601W WO2021207911A1 WO 2021207911 A1 WO2021207911 A1 WO 2021207911A1 CN 2020084601 W CN2020084601 W CN 2020084601W WO 2021207911 A1 WO2021207911 A1 WO 2021207911A1
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WO
WIPO (PCT)
Prior art keywords
paging signals
network
subscription
dummy
connectivity
Prior art date
Application number
PCT/CN2020/084601
Other languages
English (en)
Inventor
Fojian ZHANG
Chaofeng HUI
Jian Li
Hao Zhang
Yuankun ZHU
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Qualcomm Incorporated
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Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2020/084601 priority Critical patent/WO2021207911A1/fr
Publication of WO2021207911A1 publication Critical patent/WO2021207911A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
    • 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
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • 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

Definitions

  • the following relates generally to wireless communications and more specifically to use of a paging signal threshold for multiple subscription communications.
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) .
  • Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems.
  • 4G systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may be referred to as New Radio (NR) systems.
  • a wireless multiple-access communications system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE) .
  • UE user equipment
  • a UE may support multiple subscriptions to connect with multiple networks simultaneously. In some cases, communications with one of the networks may adversely impact the communications with another network.
  • a user equipment may be configured to support multiple subscriptions, where one of the subscriptions may be associated with a first network, and another subscription may be associated with a second network.
  • a UE may be configured with a paging signal counter.
  • the UE may perform a connection establishment procedure, such as a radio resource control (RRC) connection procedure, with the second network.
  • RRC radio resource control
  • the second network may remain inactive after the connection is established and may release the UE from the connection, indicating that the paging signal was a dummy paging signal. Nevertheless, the connection procedure with the second network may be held at a higher priority than the communications with the first network. As such, communications with the first network may be interrupted each time the UE receives a paging signal from the second network and performs a connection procedure. In some implementations, the UE may continue to receive paging signals from the second network, and each time the UE may perform an RRC connection procedure, and then each time the second network may release the UE after some time without any other action.
  • the UE may increment the paging signal counter. If the counter reaches a preconfigured count in some amount of time, the UE may determine that the one or more paging signals are dummy paging signals, and that the second network is abnormal.
  • the UE may disable connectivity with the second network associated with the second subscription.
  • the UE may enable connectivity with a third network associated with the second subscription.
  • the third network may be a network that may not send dummy paging signals.
  • the second network may be a 4G cellular network and the dummy paging signals may be packet-switched paging signals.
  • the third network may be a 3G cellular network and thus may instead use circuit-switched paging signals, which will not be dummy paging signals. As such, unnecessary interruptions on the first network may be avoided white the connectivity with the second network is disabled.
  • the UE may start a timer, such as a back off timer. Upon expiration of the timer, the UE may disable connectivity with the third network and re-establish connectivity with the second network using the second subscription.
  • a timer such as a back off timer.
  • a method of wireless communications at a UE may include establishing a connection with a first network associated with a first subscription, receiving one or more paging signals from a second network associated with a second subscription, determining that the one or more paging signals are dummy paging signals, disabling connectivity with the second network based on the one or more paging signals being dummy paging signals, and enabling connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to establish a connection with a first network associated with a first subscription, receive one or more paging signals from a second network associated with a second subscription, determine that the one or more paging signals are dummy paging signals, disable connectivity with the second network based on the one or more paging signals being dummy paging signals, and enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the apparatus may include means for establishing a connection with a first network associated with a first subscription, receiving one or more paging signals from a second network associated with a second subscription, determining that the one or more paging signals are dummy paging signals, disabling connectivity with the second network based on the one or more paging signals being dummy paging signals, and enabling connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • a non-transitory computer-readable medium storing code for wireless communications at a UE is described.
  • the code may include instructions executable by a processor to establish a connection with a first network associated with a first subscription, receive one or more paging signals from a second network associated with a second subscription, determine that the one or more paging signals are dummy paging signals, disable connectivity with the second network based on the one or more paging signals being dummy paging signals, and enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • determining that the one or more paging signals may be dummy paging signals may include operations, features, means, or instructions for entering a connected state with the second network in response to each receipt of the one or more paging signals, receiving a connection release from the second network after each connected state, and incrementing a counter each time the one or more paging signals results in a connected state followed by connection release.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that the one or more paging signals may be dummy paging signals based on the counter exceeding a threshold value within a predetermined period of time.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that the one or more paging signals may be dummy paging signals based on a lack of activity by the second network during the connected state formed in response to receipt of each of the one or more paging signals.
  • entering the connected state with the second network in response to each receipt of the one or more paging signals may include operations, features, means, or instructions for performing an RRC procedure with the second network to establish the connected state, where the RRC may have a higher priority than the connection with the first network associated with the first subscription.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for starting a timer upon enabling connectivity with the third network, disabling connectivity with the third network associated with the second subscription upon expiration of the timer, and re-enabling connectivity with the second network associated with the second subscription upon expiration of the timer.
  • disabling connectivity with the second network based on the one or more paging signals being dummy paging signals further may include operations, features, means, or instructions for transmitting a detach request to the second network based on the one or more paging signals being dummy paging signals, and receiving a detach accept message from the second network.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving one or more additional paging signals from the third network associated with the second subscription, where the one or more additional paging signals may be circuit switched (CS) paging signals, where the one or more additional paging signals may not be dummy paging signals based at least on the one or more additional paging signals being CS paging signals.
  • CS circuit switched
  • the first network may be a 5G network
  • the second network may be a 4G network
  • the third network may be a 3G network.
  • FIG. 1 illustrates an example of a system for wireless communications that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • FIG. 2 illustrates an example of a system for wireless communications that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • FIG. 3 illustrates an example of a process flow that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • FIGs. 4 and 5 show block diagrams of devices that support use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • FIG. 6 shows a block diagram of a communications manager that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • FIG. 7 shows a diagram of a system including a device that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • FIGs. 8 through 10 show flowcharts illustrating methods that support use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • a user equipment may be configured with a dual-subscriber identity module (SIM) .
  • SIM may be associated with a subscription that allows the UE to connect to a network.
  • each SIM may connect to a different network.
  • the UE may have a first SIM with a first subscription providing access to a first network (e.g., 5G network) , and a second SIM with a second subscription providing access to a second network (e.g., 4G network) .
  • the UE may only have a single radio frequency chain coupled to a set of antennas (e.g., radio frequency transmit/receive antennas) . As such, a radio frequency resource conflict may result between the two subscriptions.
  • the UE may establish a connection with a 5G network using the first subscription and the UE may establish a connection with a 4G network using the second subscription.
  • the UE may utilize the connection with the 5G network for low-latency communications (e.g., online gaming, streaming, video games) .
  • the UE may receive paging signals (e.g., unexpected Long Term Evolution (LTE) mobile terminated (MT) packet switched (PS) paging signals) via the second subscription.
  • LTE Long Term Evolution
  • MT mobile terminated
  • PS packet switched
  • the UE may perform a connection procedure (e.g., radio resource control (RRC) procedure) to establish a connection with the 4G network based on receiving the paging signals.
  • RRC radio resource control
  • the connection procedure may be assigned a higher priority than the low-latency communications on the first subscription. Due to the UE having only a single radio frequency chain, the radio frequency resources may be allocated to the second subscription until the RRC procedure and communications associated with paging signals is completed, and the first subscription may lose the radio frequency resources during this time. As such, low-latency activities may experience delays. Further, the paging signals received by the UE may be dummy paging signals. As such, upon establishing a connection with the 4G network, the 4G network may not take any further action for a period of time before releasing the connection. If the UE frequently receives dummy paging signals, the low-latency activities on the first subscription may suffer.
  • a UE may be configured with a counter that may be used to count the number of dummy paging signals the UE receives in a certain amount of time.
  • a dummy page may refer to a page that results in no further action from the network from which the page was transmitted, other than the network releasing the UE from connection with the network.
  • the counter reaches a preconfigured threshold (e.g., a maximum count)
  • the UE may determine that the 4G network associated with the second subscription is abnormal. In response to this determination, the UE may disable connectivity with the 4G network and enable connectivity with a third network, such as a 3G network, on the second subscription.
  • the UE may start a timer upon connecting with the 3G network (e.g., T_4g_backoff timer) .
  • T_4g_backoff timer e.g., T_4g_backoff timer
  • the UE may disconnect from the 3G network and re-establish connectivity with the 4G network on the second subscription.
  • Switching from the 4G network to the 3G network may improve latency experienced on the 5G network because the 3G network may utilize circuit switched (CS) paging signals rather the PS paging signals. As such, dummy pages may not be transmitted by the 3G network, thus mitigating the inefficient use of resources while the user is engaged in a low-latency activity on the 5G network.
  • CS circuit switched
  • the described techniques may support improvements in multiple subscription communications by increasing efficiency, improving reliability, and decreasing latency, among other advantages.
  • supported techniques may include improved network operations and, in some examples, may promote network efficiencies, among other benefits.
  • aspects of the disclosure are initially described in the context of wireless communications systems. Aspects are then described with respect to a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to use of a paging signal threshold for multiple subscription communications.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the wireless communications system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130.
  • the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-A Pro LTE-A Pro
  • NR New Radio
  • the wireless communications system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.
  • ultra-reliable e.g., mission critical
  • the base stations 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may be devices in different forms or having different capabilities.
  • the base stations 105 and the UEs 115 may wirelessly communicate via one or more communication links 125.
  • Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base station 105 may establish one or more communication links 125.
  • the coverage area 110 may be an example of a geographic area over which a base station 105 and a UE 115 may support the communication of signals according to one or more radio access technologies.
  • the UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times.
  • the UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1.
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115, the base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment) , as shown in FIG. 1.
  • network equipment e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment
  • the base stations 105 may communicate with the core network 130, or with one another, or both.
  • the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface) .
  • the base stations 105 may communicate with one another over the backhaul links 120 (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between base stations 105) , or indirectly (e.g., via core network 130) , or both.
  • the backhaul links 120 may be or include one or more wireless links.
  • One or more of the base stations 105 described herein may include or may be referred to by a person having ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a Home NodeB, a Home eNodeB, or other suitable terminology.
  • a base transceiver station a radio base station
  • an access point a radio transceiver
  • a NodeB an eNodeB (eNB)
  • eNB eNodeB
  • a next-generation NodeB or a giga-NodeB either of which may be referred to as a gNB
  • gNB giga-NodeB
  • a UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples.
  • a UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer.
  • PDA personal digital assistant
  • a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
  • WLL wireless local loop
  • IoT Internet of Things
  • IoE Internet of Everything
  • MTC machine type communications
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • devices such as other UEs 115 that may sometimes act as relays as well as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • the UEs 115 and the base stations 105 may wirelessly communicate with one another via one or more communication links 125 over one or more carriers.
  • the term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication links 125.
  • a carrier used for a communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) .
  • BWP bandwidth part
  • Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling.
  • the wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation.
  • a UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration.
  • Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers.
  • FDD frequency division duplexing
  • TDD time division duplexing
  • Signal waveforms transmitted over a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) .
  • MCM multi-carrier modulation
  • OFDM orthogonal frequency division multiplexing
  • DFT-S-OFDM discrete Fourier transform spread OFDM
  • a resource element may consist of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related.
  • the number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) .
  • a wireless communications resource may refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers or beams) , and the use of multiple spatial layers may further increase the data rate or data integrity for communications with a UE 115.
  • Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) .
  • Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
  • SFN system frame number
  • Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration.
  • a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of slots.
  • each frame may include a variable number of slots, and the number of slots may depend on subcarrier spacing.
  • Each slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) .
  • a slot may further be divided into multiple mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
  • a subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) .
  • TTI duration e.g., the number of symbol periods in a TTI
  • the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
  • Physical channels may be multiplexed on a carrier according to various techniques.
  • a physical control channel and a physical data channel may be multiplexed on a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques.
  • a control region e.g., a control resource set (CORESET)
  • CORESET control resource set
  • a control region for a physical control channel may be defined by a number of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier.
  • One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115.
  • one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner.
  • An aggregation level for a control channel candidate may refer to a number of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size.
  • Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
  • a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110.
  • different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105.
  • the overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105.
  • the wireless communications system 100 may include, for example, a heterogeneous network in which different types of the base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.
  • the wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof.
  • the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) or mission critical communications.
  • the UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission critical functions) .
  • Ultra-reliable communications may include private communication or group communication and may be supported by one or more mission critical services such as mission critical push-to-talk (MCPTT) , mission critical video (MCVideo) , or mission critical data (MCData) .
  • MCPTT mission critical push-to-talk
  • MCVideo mission critical video
  • MCData mission critical data
  • Support for mission critical functions may include prioritization of services, and mission critical services may be used for public safety or general commercial applications.
  • the terms ultra-reliable, low-latency, mission critical, and ultra-reliable low-latency may be used interchangeably herein.
  • a UE 115 may also be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol) .
  • D2D device-to-device
  • P2P peer-to-peer
  • One or more UEs 115 utilizing D2D communications may be within the geographic coverage area 110 of a base station 105.
  • Other UEs 115 in such a group may be outside the geographic coverage area 110 of a base station 105 or be otherwise unable to receive transmissions from a base station 105.
  • groups of the UEs 115 communicating via D2D communications may utilize a one-to-many (1: M) system in which each UE 115 transmits to every other UE 115 in the group.
  • a base station 105 facilitates the scheduling of resources for D2D communications. In other cases, D2D communications are carried out between the UEs 115 without the involvement of a base station 105.
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • the core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) .
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management function
  • S-GW serving gateway
  • PDN Packet Data Network gateway
  • UPF user plane function
  • the control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the base stations 105 associated with the core network 130.
  • NAS non-access stratum
  • User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions.
  • the user plane entity may be connected to the network operators IP services 150.
  • the operators IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
  • Some of the network devices may include subcomponents such as an access network entity 140, which may be an example of an access node controller (ANC) .
  • Each access network entity 140 may communicate with the UEs 115 through one or more other access network transmission entities 145, which may be referred to as radio heads, smart radio heads, or transmission/reception points (TRPs) .
  • Each access network transmission entity 145 may include one or more antenna panels.
  • various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station 105) .
  • the wireless communications system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) .
  • the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length.
  • UHF waves may be blocked or redirected by buildings and environmental features, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors.
  • the transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
  • HF high frequency
  • VHF very high frequency
  • the wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands.
  • the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • LAA License Assisted Access
  • LTE-U LTE-Unlicensed
  • NR NR technology
  • an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • devices such as the base stations 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance.
  • operations in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA) .
  • Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
  • a base station 105 or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming.
  • the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming.
  • one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with a base station 105 may be located in diverse geographic locations.
  • a base station 105 may have an antenna array with a number of rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with a UE 115.
  • a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.
  • an antenna panel may support radio frequency beamforming for a signal transmitted via an antenna port.
  • Beamforming which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device.
  • Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference.
  • the adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device.
  • the adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
  • a UE may support multiple subscriptions that may allow the UE 115 to establish connections with multiple networks, where each subscription may support one network.
  • the UE 115 may establish a connection with a first network associated with a first subscription and receive data transmissions from the first network.
  • the UE 115 may concurrently receive one or more paging signals from a second network associated with the second subscription.
  • the UE 115 may perform a connection procedure (e.g., an RRC procedure) with the second network in response to receiving the one or more paging signals.
  • the second network may remain inactive when the UE 115 connects with the second network and may release the UE 115 from the connection.
  • the UE 115 may increment a counter each time the second network releases the UE 115 from a connection with the second network after the second network transmitted paging signals to the UE 115 without any additional action.
  • the UE 115 may determine that the one or more paging signals are dummy paging signals based on inactivity of the second network after receiving the paging signals, or based on a paging signal counter, or a combination thereof.
  • the UE 115 may disable connectivity with the second network based on the one or more paging signals being dummy paging signals, and enable connectivity with a third network associated with the second subscription.
  • the third network may be unable to transmit dummy paging signals which may mitigate interruptions of connectivity between the UE 115 and the first network.
  • the UE 115 may start a timer (e.g., a back off timer) , and upon expiration of the timer, the UE 115 may disable connectivity with the third network and re-enable connectivity with the second network.
  • FIG. 2 illustrates an example of a wireless communications system 200 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the wireless communications system 200 may include base stations 105-a, 105-b, and 105-c and UE 115-a, which may be examples of base stations 105 and a UE 115 as described with reference to FIG. 1.
  • Each base station 105 may serve a geographic coverage area. In some cases, one or more of the geographic coverage areas served by base stations 105-a, 105-b, and 105-c may overlap.
  • UE 115-a may be configured with multiple SIM functionality and may be configured to support improved multiple subscription communications by detecting dummy paging signals.
  • UE 115-a may limit communications on an abnormal network served by one base station 105 associated with one subscription to improve communications with another network served by another base station 105 associated with another subscription.
  • other wireless devices such as base stations 105-a, 105-b, or 105-c, or some combination of these base stations 105, may implement procedures to improve the multiple subscription communications.
  • UE 115-a may be an example of a dual-SIM, or multi-SIM, UE 115.
  • UE 115-a may include a first SIM 205 and a second SIM 210.
  • the first SIM 205 may provide a first subscription
  • the second SIM 210 may provide a second subscription.
  • UE 115-a may communicate with a first communications network via the first subscription and may simultaneously communicate with a second communications network via the second subscription.
  • each network may be supported by a different base station 105, or each network may be supported by the same base station 105, or a combination thereof.
  • base station 105-a may support a 5G network
  • base station 150-b may support a 4G network
  • base station 105-c may support a 3G network.
  • a network may refer to a cell.
  • UE 115-a may support communications with two base stations 105 (e.g., two networks) at a time.
  • UE 115-a may communicate with base station 105-a associated with a first subscription via communication link 215, and UE 115-a may communicate with base station 105-b associated with the second subscription over communication link 220-a, or with base station 105-c associated with the second subscription over communications link 220-c.
  • UE 115-a may establish a connection with base station 105-a and transmit and receive signals to base station 105-a over communication link 215.
  • UE 115-a may use base station 105-a, as base station 105-a supports a 5G network, for low-latency activities (e.g., online gaming, streaming) .
  • UE 115-a may initially perform an attach procedure with base station 105-b via the second subscription, that supports a 4G network.
  • UE 115-a may receive one or more unexpected paging signals (e.g., MT PS paging signals) from base station 105-b.
  • unexpected paging signals e.g., MT PS paging signals
  • UE 115-a may perform a connection procedure, such as an RRC procedure.
  • resources may be limited at UE 115-a and responding to the one or more paging signals may be given a higher priority than the communications with base station 105-a.
  • UE 115-a performs the RRC procedure and waits for base station 105-b to respond, communications with base station 105-a may be interrupted.
  • UE 115-a may perform the RRC procedure and wait for an action by base station 105-b. In some cases, base station 105-b may not perform any action other than releasing UE 115-a from the RRC connection. In some cases, after a preconfigured duration of waiting for an action by base station 105-b, UE 115-a may transmit an RRC release request to base station 105-b and base station 105-b may confirm the request and release UE 115-a from the RRC connection. In some cases, base station 105-b may autonomously determine to release UE 115-a from the RRC connection.
  • Paging signals that result in no action from a base station 105 or network, other than an RRC release may be referred to as dummy paging signals as the paging signal does not serve a purpose.
  • UE 115-a may continue to receive paging signals from base station 105-b and UE 115-a may continue to perform RRC procedures, with no other result from base station 105-b other than releasing UE 115-a from the RRC connection. This repeated behavior may adversely impact the experience of UE 115-a with base station 105-a, and thus my adversely impact low-latency communications supported by base station 105-a.
  • UE 115-a may be configured with a dummy paging signal counter to record the number of received dummy paging signals. For example, each time UE 115-a receives a paging signal, and performs an RRC procedure only to be released from the RRC connection, UE 115-a may increment the counter. If the counter reaches a preconfigured number in a preconfigured amount of time, the UE may determine that the 4G network supported by base station 105-b is abnormal.
  • the counter may be configured to reset after a preconfigured amount of time, or at the event of a trigger, such as UE 115-a disconnecting from the first network (e.g., 5G network) .
  • UE 115-a may disable connectivity with base station 105-b associated with the second subscription and enable connectivity with base station 105-c via the second subscription, where base station 105-c may support a 3G network.
  • the 3G network may support CS paging signals and not PS paging signals.
  • a CS paging signal may be connection oriented such that a path may be established between a source and a destination before the transmission occurs. Rather, a PS paging signal may be a connectionless such that a dynamic route may be decided for each packet during transmission. Because CS paging signals have a path established before transmission, dummy paging signals may not result. Further, CS paging may be used for MT CS call and MT CS SMS, which cannot result in dummy paging signals.
  • the second subscription may not be a data distribution service (DDS) subscriber. As such, in 3G mode, the second subscription may only operate in CS mode. While UE 115-a is connected to the 3G network via base station 105-c, dummy paging signals may not be received and the connection between UE 115-a and base station 105-a may be less frequently interrupted.
  • DDS data distribution service
  • UE 115-a may start a timer, such as a back off timer (e.g., T_4g_backoff timer) .
  • the timer duration may be preconfigured, or may be dynamically, semi-persistently, or aperiodically updated by one or more networks or one or more base stations 105.
  • the timer duration may be a user input based on the expected duration of activity on the 5G network.
  • the timer duration (e.g., some number of minutes, or some number of hours, or a combination thereof) may be selected by UE 115-a based on the low-latency activity on the 5G network.
  • the timer duration may be shorter if the low-latency activity is a video call, compared to a longer timer duration if the low-latency activity is a video game or streamed movie, etc.
  • UE 115-a may disable connection with base station 105-c and re-enable connection with base station 105-b.
  • the connection between UE 115-a and base station 105-b may be disabled as long as UE 115-a identifies a low-latency activity being performed on the 5G network, and as long as the timer is running. For example, if the timer is running, but the UE detects the low-latency activity has stopped on the 5G network, UE 115-a may return to the 4G network with the second subscription.
  • FIG. 3 illustrates an example of a process flow 300 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the process flow 300 may illustrate an example of a dummy paging signal detection and network switching procedure for improved communications.
  • a UE such as a UE described with reference to FIGs. 1 and 2, may support subscription 305-a and subscription 305-b that may be used for communications with 4G cell 310-a, 5G cell 310-b, or 3G cell 310-c, or a combination thereof.
  • One or more of the subscriptions 305 may switch between cells 310 based on a previously enabled cell being abnormal.
  • the cells 310 may each be served by a different base station, or multiple cells 310 may be served by the same base station 105, where the one or more base stations may be examples of the corresponding wireless devices described with reference to FIGs. 1 and 2.
  • a cell may refer to a network as described with reference to FIG. 2.
  • another device such as a base station may implement the procedures.
  • Alternative examples of the following may be implemented, where some steps are performed in a different order than described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added.
  • subscription 305-a may be allocated for 5G cell 310-b to support low-latency communications.
  • subscription 305-b may be configurable to switch between 4G cell 310-a and 3G cell 310-c.
  • subscription 305-a may transmit a 5G registration request to 5G cell 310-b.
  • Subscription 305-a may transmit the registration request to establish a connection with 5G cell 310-b.
  • 5G cell 310-b may transmit a 5G registration accept message to subscription 305-a.
  • the UE may establish a connection with 5G cell 310-b (e.g., a first network) associated with subscription 305-a (e.g., a first subscription) .
  • subscription 305-b may transmit a 4G attach request to 4G cell 310-a.
  • 4G cell 310-a may transmit a 4G attach accept message to subscription 305-b.
  • subscription 305-a and 5G cell 310-b may enter a 5G connect mode and begin a data service.
  • the data service may support a low-latency activity (e.g., online gaming, streaming, video games) .
  • 4G cell 310-a may transmit one or more unexpected paging signals to subscription 305-b.
  • the UE may receive one or more paging signals from a second network (e.g., 4G cell 310-a) associated with a second subscription (e.g., subscription 305-b) .
  • the one or more paging signals may be PS paging signals.
  • the one or more paging signals may be dummy paging signals.
  • subscription 305-b may establish a connection with 4G cell 310-a via a connection procedure, such as an RRC procedure.
  • the UE e.g., subscription 305-a
  • the second network e.g., 4G cell 310-a
  • the RRC procedure may have a higher priority than the connection with the first network associated with the first subscription (e.g., connection between subscription 305-a and 5G cell 310-b) .
  • subscription 305-a may stop data transfer as the limited allocated resources are being used by subscription 305-b to respond to the one or more paging signals transmitted by 4G cell 310-a.
  • the low-latency activities may experience frequent, or long delays that adversely impact the user experience on 5G cell 310-a.
  • 4G cell 310-a may transmit an RRC connection release message to subscription 305-b.
  • 4G cell 310-a may release the RRC connection after a preconfigured duration of inactivity by 4G cell 310-a.
  • the release message may be based on an RRC connection release request transmitted by subscription 305-b to 4G 310-a after a preconfigured duration of inactivity.
  • the UE, or subscription 305-b may determine that the one or more paging signals are dummy paging signals.
  • the UE, or subscription 305-b may determine that the one or more paging signals are dummy paging signals based on a lack of activity by the second network (e.g., 4G cell 310-a) during the connected state formed in response to receipt of each of the one or more paging signals.
  • the second network e.g., 4G cell 310-a
  • subscription 305-a may resume data transfer with 5G network 310-b based on the RRC connection of subscription 305-b with 4G network 310-a being released.
  • the UE, or a subscription may be configured with a counter to count the number of dummy paging signals received by the UE in a preconfigured duration.
  • subscription 305-b may determine whether a preconfigured count on the counter has been reached (e.g., a maximum count, threshold value) .
  • the UE or subscription 305-b may determine that the one or more paging signals are dummy paging signals based on the counter exceeding the threshold value within a predetermined period of time. If the preconfigured count has not been reached, at 334, then procedure 1 may be looped. For example, subscription 305-b may continue to receive dummy paging signals until the preconfigured count has been reached. If the preconfigured count is reached, subscription 305-b may leave procedure 1.
  • subscription 305-b may transmit a 4G detach request to 4G cell 310-a.
  • 4G cell 310-a may transmit a 4G detach accept message to subscription 305-b.
  • the UE e.g., subscription 305-b
  • may disable connectivity with the second network e.g., 4G cell 310-a based on the one or more paging signals being dummy paging signals.
  • subscription 305-b may transmit a 3G location update request to 3G cell 310-c.
  • 3G cell 310-c may transmit a 3G location update accept message to subscription 305-b.
  • the UE may enable connectivity with a third network (e.g., 3G cell 310-c) associated with the second subscription (e.g., subscription 305-b) based on the one or more paging signals being dummy paging signals.
  • the UE, or subscription 305-b may receive one or more additional paging signals from the third network (e.g., 3G cell 310-c) associated with the second subscription (e.g., subscription 305-b) , where the one or more additional paging signals may be CS paging signals, where the one or more additional paging signals may not be dummy paging signals based on the one or more additional paging signals being CS paging signals.
  • the third network e.g., 3G cell 310-c
  • the second subscription e.g., subscription 305-b
  • the one or more additional paging signals may be CS paging signals
  • the one or more additional paging signals may not be dummy paging signals based on the one or more additional paging signals being CS paging signals.
  • subscription 305-b may start a back off timer.
  • the UE, or subscription 305-b may start a timer upon enabling connectivity with the third network (e.g., 3G cell 310-c) .
  • the back off timer may expire. The expiration of the timer may prompt the UE or subscription 305-b to disable connectivity with the third network (e.g., 3G cell 310-c) and re-enable connectivity with the second network (e.g., 4G cell 305-a) .
  • subscription 305-b may transmit a 4G attach request to 4G cell 310-a.
  • 4G cell 310-a may transmit a 4G attach accept message to subscription 305-b.
  • the UE or subscription 305-b may be connected to the second network (e.g., 4G cell 310-a) and may receive one or more paging signals from the second network.
  • FIG. 4 shows a block diagram 400 of a device 405 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the device 405 may be an example of aspects of a UE 115 as described herein.
  • the device 405 may include a receiver 410, a communications manager 415, and a transmitter 420.
  • the device 405 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 410 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to use of a paging signal threshold for multiple subscription communications, etc. ) . Information may be passed on to other components of the device 405.
  • the receiver 410 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the receiver 410 may utilize a single antenna or a set of antennas.
  • the communications manager 415 may establish a connection with a first network associated with a first subscription, receive one or more paging signals from a second network associated with a second subscription, determine that the one or more paging signals are dummy paging signals, disable connectivity with the second network based on the one or more paging signals being dummy paging signals, and enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the communications manager 415 may be an example of aspects of the communications manager 710 described herein.
  • the communications manager 415 may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 415, or its sub-components may be executed by a general-purpose processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • the communications manager 415 may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components.
  • the communications manager 415, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 415, or its sub-components may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • I/O input/output
  • the transmitter 420 may transmit signals generated by other components of the device 405.
  • the transmitter 420 may be collocated with a receiver 410 in a transceiver module.
  • the transmitter 420 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the transmitter 420 may utilize a single antenna or a set of antennas.
  • the communications manager 415 as described herein may be implemented to realize one or more potential advantages.
  • One implementation may allow the device 405 to efficiently utilize resources for communications on multiple networks. For example, a device 405 may switch networks supported by one subscription upon the determination that the currently connected network is abnormal to improve communications on the network supported by the other subscription.
  • a processor of a UE 115 may increase reliability and efficiency for a UE 115 supporting communications on multiple networks simultaneously because the UE 115 can switch between networks to mitigate abnormal behavior on some networks.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the device 505 may be an example of aspects of a device 405, or a UE 115 as described herein.
  • the device 505 may include a receiver 510, a communications manager 515, and a transmitter 545.
  • the device 505 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 510 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to use of a paging signal threshold for multiple subscription communications, etc. ) . Information may be passed on to other components of the device 505.
  • the receiver 510 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the receiver 510 may utilize a single antenna or a set of antennas.
  • the communications manager 515 may be an example of aspects of the communications manager 415 as described herein.
  • the communications manager 515 may include a connection establishment module 520, a paging signal reception module 525, a paging signal determination module 530, a connection disabling module 535, and a connection enabling module 540.
  • the communications manager 515 may be an example of aspects of the communications manager 710 described herein.
  • the connection establishment module 520 may establish a connection with a first network associated with a first subscription.
  • the paging signal reception module 525 may receive one or more paging signals from a second network associated with a second subscription.
  • the paging signal determination module 530 may determine that the one or more paging signals are dummy paging signals.
  • the connection disabling module 535 may disable connectivity with the second network based on the one or more paging signals being dummy paging signals.
  • the connection enabling module 540 may enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the transmitter 545 may transmit signals generated by other components of the device 505.
  • the transmitter 545 may be collocated with a receiver 510 in a transceiver module.
  • the transmitter 545 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the transmitter 545 may utilize a single antenna or a set of antennas.
  • FIG. 6 shows a block diagram 600 of a communications manager 605 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the communications manager 605 may be an example of aspects of a communications manager 415, a communications manager 515, or a communications manager 710 described herein.
  • the communications manager 605 may include a connection establishment module 610, a paging signal reception module 615, a paging signal determination module 620, a connection disabling module 625, a connection enabling module 630, a connection release module 635, a counter module 640, a RRC procedure module 645, a timer module 650, and a detach request module 655.
  • Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the connection establishment module 610 may establish a connection with a first network associated with a first subscription.
  • the paging signal reception module 615 may receive one or more paging signals from a second network associated with a second subscription.
  • the paging signal determination module 620 may determine that the one or more paging signals are dummy paging signals.
  • the connection disabling module 625 may disable connectivity with the second network based on the one or more paging signals being dummy paging signals.
  • the connection enabling module 630 may enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the first network is a 5G network
  • the second network is a 4G network
  • the third network is a 3G network.
  • connection enabling module 630 may enter a connected state with the second network in response to each receipt of the one or more paging signals.
  • the connection release module 635 may receive a connection release from the second network after each connected state.
  • the counter module 640 may increment a counter each time the one or more paging signals results in a connected state followed by connection release.
  • the paging signal determination module 620 may determine that the one or more paging signals are dummy paging signals based on the counter exceeding a threshold value within a predetermined period of time. In some examples, the paging signal determination module 620 may determine that the one or more paging signals are dummy paging signals based on a lack of activity by the second network during the connected state formed in response to receipt of each of the one or more paging signals.
  • the RRC procedure module 645 may perform a RRC procedure with the second network to establish the connected state, where the RRC procedure has a higher priority than the connection with the first network associated with the first subscription.
  • the timer module 650 may start a timer upon enabling connectivity with the third network.
  • the connection disabling module 625 may disable connectivity with the third network associated with the second subscription upon expiration of the timer.
  • the connection enabling module 630 may re-enable connectivity with the second network associated with the second subscription upon expiration of the timer.
  • the detach request module 655 may transmit a detach request to the second network based on the one or more paging signals being dummy paging signals. In some examples, the detach request module 655 may receive a detach accept message from the second network.
  • the paging signal reception module 615 may receive one or more additional paging signals from the third network associated with the second subscription, where the one or more additional paging signals are CS paging signals, where the one or more additional paging signals are not dummy paging signals based at least on the one or more additional paging signals being CS paging signals.
  • FIG. 7 shows a diagram of a system 700 including a device 705 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the device 705 may be an example of or include the components of device 405, device 505, or a UE 115 as described herein.
  • the device 705 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 710, an I/O controller 715, a transceiver 720, an antenna 725, memory 730, and a processor 740. These components may be in electronic communication via one or more buses (e.g., bus 745) .
  • buses e.g., bus 745
  • the communications manager 710 may establish a connection with a first network associated with a first subscription, receive one or more paging signals from a second network associated with a second subscription, determine that the one or more paging signals are dummy paging signals, disable connectivity with the second network based on the one or more paging signals being dummy paging signals, and enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the I/O controller 715 may manage input and output signals for the device 705.
  • the I/O controller 715 may also manage peripherals not integrated into the device 705.
  • the I/O controller 715 may represent a physical connection or port to an external peripheral.
  • the I/O controller 715 may utilize an operating system such as or another known operating system.
  • the I/O controller 715 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 715 may be implemented as part of a processor.
  • a user may interact with the device 705 via the I/O controller 715 or via hardware components controlled by the I/O controller 715.
  • the transceiver 720 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 720 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 720 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 725. However, in some cases the device may have more than one antenna 725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 730 may include random-access memory (RAM) and read-only memory (ROM) .
  • the memory 730 may store computer-readable, computer-executable code 735 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 730 may contain, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the processor 740 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 740 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 740.
  • the processor 740 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 730) to cause the device 705 to perform various functions (e.g., functions or tasks supporting use of a paging signal threshold for multiple subscription communications) .
  • the code 735 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 735 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 735 may not be directly executable by the processor 740 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • FIG. 8 shows a flowchart illustrating a method 800 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the operations of method 800 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 800 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may establish a connection with a first network associated with a first subscription.
  • the operations of 805 may be performed according to the methods described herein. In some examples, aspects of the operations of 805 may be performed by a connection establishment module as described with reference to FIGs. 4 through 7.
  • the UE may receive one or more paging signals from a second network associated with a second subscription.
  • the operations of 810 may be performed according to the methods described herein. In some examples, aspects of the operations of 810 may be performed by a paging signal reception module as described with reference to FIGs. 4 through 7.
  • the UE may determine that the one or more paging signals are dummy paging signals.
  • the operations of 815 may be performed according to the methods described herein. In some examples, aspects of the operations of 815 may be performed by a paging signal determination module as described with reference to FIGs. 4 through 7.
  • the UE may disable connectivity with the second network based on the one or more paging signals being dummy paging signals.
  • the operations of 820 may be performed according to the methods described herein. In some examples, aspects of the operations of 820 may be performed by a connection disabling module as described with reference to FIGs. 4 through 7.
  • the UE may enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the operations of 825 may be performed according to the methods described herein. In some examples, aspects of the operations of 825 may be performed by a connection enabling module as described with reference to FIGs. 4 through 7.
  • FIG. 9 shows a flowchart illustrating a method 900 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the operations of method 900 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 900 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may establish a connection with a first network associated with a first subscription.
  • the operations of 905 may be performed according to the methods described herein. In some examples, aspects of the operations of 905 may be performed by a connection establishment module as described with reference to FIGs. 4 through 7.
  • the UE may receive one or more paging signals from a second network associated with a second subscription.
  • the operations of 910 may be performed according to the methods described herein. In some examples, aspects of the operations of 910 may be performed by a paging signal reception module as described with reference to FIGs. 4 through 7.
  • the UE may enter a connected state with the second network in response to each receipt of the one or more paging signals.
  • the operations of 915 may be performed according to the methods described herein. In some examples, aspects of the operations of 915 may be performed by a connection enabling module as described with reference to FIGs. 4 through 7.
  • the UE may receive a connection release from the second network after each connected state.
  • the operations of 920 may be performed according to the methods described herein. In some examples, aspects of the operations of 920 may be performed by a connection release module as described with reference to FIGs. 4 through 7.
  • the UE may increment a counter each time the one or more paging signals results in a connected state followed by connection release.
  • the operations of 925 may be performed according to the methods described herein. In some examples, aspects of the operations of 925 may be performed by a counter module as described with reference to FIGs. 4 through 7.
  • the UE may determine that the one or more paging signals are dummy paging signals.
  • the operations of 930 may be performed according to the methods described herein. In some examples, aspects of the operations of 930 may be performed by a paging signal determination module as described with reference to FIGs. 4 through 7.
  • the UE may disable connectivity with the second network based on the one or more paging signals being dummy paging signals.
  • the operations of 935 may be performed according to the methods described herein. In some examples, aspects of the operations of 935 may be performed by a connection disabling module as described with reference to FIGs. 4 through 7.
  • the UE may enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the operations of 940 may be performed according to the methods described herein. In some examples, aspects of the operations of 940 may be performed by a connection enabling module as described with reference to FIGs. 4 through 7.
  • FIG. 10 shows a flowchart illustrating a method 1000 that supports use of a paging signal threshold for multiple subscription communications in accordance with aspects of the present disclosure.
  • the operations of method 1000 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1000 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may establish a connection with a first network associated with a first subscription.
  • the operations of 1005 may be performed according to the methods described herein. In some examples, aspects of the operations of 1005 may be performed by a connection establishment module as described with reference to FIGs. 4 through 7.
  • the UE may receive one or more paging signals from a second network associated with a second subscription.
  • the operations of 1010 may be performed according to the methods described herein. In some examples, aspects of the operations of 1010 may be performed by a paging signal reception module as described with reference to FIGs. 4 through 7.
  • the UE may determine that the one or more paging signals are dummy paging signals.
  • the operations of 1015 may be performed according to the methods described herein. In some examples, aspects of the operations of 1015 may be performed by a paging signal determination module as described with reference to FIGs. 4 through 7.
  • the UE may disable connectivity with the second network based on the one or more paging signals being dummy paging signals.
  • the operations of 1020 may be performed according to the methods described herein. In some examples, aspects of the operations of 1020 may be performed by a connection disabling module as described with reference to FIGs. 4 through 7.
  • the UE may enable connectivity with a third network associated with the second subscription based on the one or more paging signals being dummy paging signals.
  • the operations of 1025 may be performed according to the methods described herein. In some examples, aspects of the operations of 1025 may be performed by a connection enabling module as described with reference to FIGs. 4 through 7.
  • the UE may start a timer upon enabling connectivity with the third network.
  • the operations of 1030 may be performed according to the methods described herein. In some examples, aspects of the operations of 1030 may be performed by a timer module as described with reference to FIGs. 4 through 7.
  • the UE may disable connectivity with the third network associated with the second subscription upon expiration of the timer.
  • the operations of 1035 may be performed according to the methods described herein. In some examples, aspects of the operations of 1035 may be performed by a connection disabling module as described with reference to FIGs. 4 through 7.
  • the UE may re-enable connectivity with the second network associated with the second subscription upon expiration of the timer.
  • the operations of 1040 may be performed according to the methods described herein. In some examples, aspects of the operations of 1040 may be performed by a connection enabling module as described with reference to FIGs. 4 through 7.
  • Example 1 A method for wireless communications at a UE, comprising: establishing a connection with a first network associated with a first subscription; receiving one or more paging signals from a second network associated with a second subscription; determining that the one or more paging signals are dummy paging signals; disabling connectivity with the second network based at least in part on the one or more paging signals being dummy paging signals; and enabling connectivity with a third network associated with the second subscription based at least in part on the one or more paging signals being dummy paging signals.
  • Example 2 The method of example 1, wherein determining that the one or more paging signals are dummy paging signals comprises: entering a connected state with the second network in response to each receipt of the one or more paging signals; receiving a connection release from the second network after each connected state; and incrementing a counter each time the one or more paging signals results in a connected state followed by connection release.
  • Example 3 The method of example 2, further comprising: determining that the one or more paging signals are dummy paging signals based at least in part on the counter exceeding a threshold value within a predetermined period of time.
  • Example 4 The method of any of examples 2 or 3, further comprising: determining that the one or more paging signals are dummy paging signals based at least in part on a lack of activity by the second network during the connected state formed in response to receipt of each of the one or more paging signals.
  • Example 5 The method of any of example 2 to 4, wherein entering the connected state with the second network in response to each receipt of the one or more paging signals comprises: performing a RRC procedure with the second network to establish the connected state, wherein the RRC procedure has a higher priority than the connection with the first network associated with the first subscription.
  • Example 6 The method of any of examples 1 to 5, further comprising: starting a timer upon enabling connectivity with the third network; disabling connectivity with the third network associated with the second subscription upon expiration of the timer; and re-enabling connectivity with the second network associated with the second subscription upon expiration of the timer.
  • Example 7 The method of any of examples 1 to 6, wherein disabling connectivity with the second network based at least in part on the one or more paging signals being dummy paging signals further comprises: transmitting a detach request to the second network based at least in part on the one or more paging signals being dummy paging signals; and receiving a detach accept message from the second network.
  • Example 8 The method of any of examples 1 to 7, further comprising: receiving one or more additional paging signals from the third network associated with the second subscription, wherein the one or more additional paging signals are CS paging signals, wherein the one or more additional paging signals are not dummy paging signals based at least on the one or more additional paging signals being CS paging signals.
  • Example 9 The method of any of examples 1 to 8, wherein the first network is a 5G network, the second network is a 4G network, and the third network is a 3G network.
  • LTE, LTE-A, LTE-A Pro, or NR may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks.
  • the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
  • UMB Ultra Mobile Broadband
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Institute of Electrical and Electronics Engineers
  • WiMAX IEEE 802.16
  • IEEE 802.20 Flash-OFDM
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
  • non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium.
  • Disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne des procédés, des systèmes et des dispositifs de communication sans fil. Un équipement utilisateur (UE) peut prendre en charge de multiples abonnements qui peuvent permettre à l'UE d'établir des connexions avec de multiples réseaux. L'UE peut établir une connexion avec un premier réseau associé à un premier abonnement, et recevoir un ou plusieurs signaux de radiomessagerie provenant d'un second réseau associé à un second abonnement. L'UE peut déterminer que le ou les signaux de radiomessagerie sont des signaux de radiomessagerie factices sur la base d'une inactivité du second réseau après la transmission des signaux de radiomessagerie, ou sur la base d'un compteur de signal de radiomessagerie, ou d'une combinaison de ceux-ci. L'UE peut désactiver la connectivité avec le second réseau sur la base du ou des signaux de radiomessagerie qui sont des signaux de radiomessagerie factices, et permettre la connectivité avec un troisième réseau associé au second abonnement. L'UE peut démarrer un temporisateur, et lors de l'expiration du temporisateur, peut réactiver la connectivité avec le second réseau.
PCT/CN2020/084601 2020-04-14 2020-04-14 Seuil de signal de radiomessagerie pour des communications à abonnements multiples WO2021207911A1 (fr)

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