WO2021253283A1

WO2021253283A1 - Service recovery techniques for wireless communications systems

Info

Publication number: WO2021253283A1
Application number: PCT/CN2020/096577
Authority: WO
Inventors: Xiuqiu XIA; Hao Zhang; Jian Li; Tianya LIN; Haojun WANG; Quanling ZHANG; Bing LENG
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-12-23
Anticipated expiration: 2022-12-17

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology (RAT). The UE may transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the RAT is disabled. The UE may transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that a capability of the UE to communicate using the RAT is enabled. The UE may receive second control signaling from the first cell indicating the measurement report configuration associated with the RAT based on transmitting the first uplink message and the second uplink message

Description

SERVICE RECOVERY TECHNIQUES FOR WIRELESS COMMUNICATIONS SYSTEMS

FIELD OF TECHNOLOGY

The following relates generally to wireless communications and more specifically to service recovery techniques for wireless communications systems.

BACKGROUND

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. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal frequency division multiple access (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . 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) .

A UE may be configured with one or more subscriptions. For example, the UE may be a dual cards dual standby (DSDS) device and may support communications using two subscriptions. However, a UE may lose service with a subscription, which may result in relatively inefficient communications.

SUMMARY

The described techniques relate to improved methods, systems, devices, and apparatuses that support service recovery techniques for wireless communications systems. Generally, the described techniques provide for improved service recovery for a user equipment (UE) that supports communications with a base station using multiple subscriptions. For example, a UE may operate in a dual subscription mode, where each subscription corresponds to a subscriber identity module (SIM) of the UE (e.g., the UE may be an example of a dual cards dual standby (DSDS) UE that supports one or more radio access technologies (RATs) using two SIMs.

The UE may establish a data connection via a first subscription, a second subscription or both. The UE may identify a trigger for a service recovery procedure for a subscription. For example, the UE may receive first control signaling from a first cell (e.g., using the first subscription) indicating a removal of a measurement report configuration. The UE may initiate the service recovery procedure based on receiving the first control signaling. For example, the UE may transmit a first uplink message indicating a capability of the UE to communicate using a radio access technology (e.g., that a capability is disabled) . The UE may transmit a second uplink message subsequent to the first uplink message. The second uplink message may indicate an updated capability of the UE to communicate using a radio access technology (e.g., that a capability is enabled) . The UE may receive second control signaling, in response to the uplink messages, indicating the measurement report configuration. The second control signaling may enable the UE to report a measurement for the radio access technology in order to establish communications via the radio access technology with the first cell. Such techniques may enable the UE to recover service using the radio access technology relatively quickly, among other advantages.

A method of wireless communications at a UE is described. The method may include receiving first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a RAT, transmitting, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the RAT is disabled, transmitting, based on transmitting the first uplink message, a second uplink message to the first cell indicating that the capability of the UE to communicate using the RAT is enabled, and receiving second control signaling from the first cell indicating the measurement report configuration associated with the RAT based on transmitting the first uplink message and the second uplink message.

An apparatus for wireless communications at a UE is described. 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 receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a RAT, transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the RAT is disabled, transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that the capability of the UE to communicate using the RAT is enabled, and receive second control signaling from the first cell indicating the measurement report configuration associated with the RAT based on transmitting the first uplink message and the second uplink message.

Another apparatus for wireless communications at a UE is described. The apparatus may include means for receiving first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a RAT, transmitting, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the RAT is disabled, transmitting, based on transmitting the first uplink message, a second uplink message to the first cell indicating that the capability of the UE to communicate using the RAT is enabled, and receiving second control signaling from the first cell indicating the measurement report configuration associated with the RAT based on transmitting the first uplink message and the second uplink message.

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 receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a RAT, transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the RAT is disabled, transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that the capability of the UE to communicate using the RAT is enabled, and receive second control signaling from the first cell indicating the measurement report configuration associated with the RAT based on transmitting the first uplink message and the second uplink message.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, in response to the first uplink message, an accept message from the first cell, where transmitting the second uplink message may be in response to receiving the accept message, and receiving, in response to the second uplink message, a second accept message from the first cell.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a measurement associated with the RAT based on receiving the second control signaling indicating the measurement report configuration, and transmitting a third uplink message to the first cell based on receiving the second control signaling, the third uplink message indicating the measurement associated with the RAT.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving third control signaling in response to transmitting the third uplink message, the third control signaling configuring a secondary cell group for the RAT at the UE, and communicating with the first cell using the RAT based on receiving the third control signaling.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for communicating with the first cell using a first subscription of the UE, and communicating with a second cell of the wireless communications system using a second subscription of the UE, where communicating with the second cell includes communicating with a second RAT.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving third control signaling from the first cell prior to receiving the first control signaling, the third control signaling indicating the measurement report configuration, and refraining from determining a measurement for the first cell based on communicating with the second cell during a time period between receiving the third control signaling and receiving the first control signaling.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, communicating with the second cell during the time period may include operations, features, means, or instructions for transmitting a location update request message, and receiving a location update accept message in response to the location update request message.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, communicating with the second cell during the time period may include operations, features, means, or instructions for transmitting a routing update request message, and receiving a routing update accept message in response to the routing update request message.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the second RAT may be different than the RAT, the second RAT including universal mobile telecommunications service (UMTS) , long term evolution (LTE) , new radio (NR) , global systems for mobile (GSM) communications, or any combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first control signaling includes a first radio resource control reconfiguration message, the second control signaling includes a second radio resource control reconfiguration message, the first uplink message includes a tracking area update message or an attach request message, the second uplink message includes a second tracking area update message or a second attach request message, or any combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the RAT includes NR, UMTS, LTE, GSM communications, or any combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first cell includes an LTE cell, a second cell includes a GSM communications cell, or any combination thereof.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the UE includes a DSDS device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example of a system for wireless communications that supports service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure.

FIG. 2 illustrates an example of a wireless communications system that supports service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure.

FIG. 3 illustrates an example of a process flow that supports service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure.

FIGs. 4 and 5 show block diagrams of devices that support service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure.

FIG. 6 shows a block diagram of a communications manager that supports service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure.

FIG. 7 shows a diagram of a system including a device that supports service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure.

FIGs. 8 and 9 show flowcharts illustrating methods that support service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure.

DETAILED DESCRIPTION

In some wireless communications systems, a user equipment (UE) may have two subscriptions, each corresponding to a subscriber identity module (SIM) of the UE. A UE with two subscriptions may be referred to as a dual cards dual standby (DSDS) UE. The UE may establish a connection with a network using a first subscription, a second subscription, or both. For example, the UE may attempt to establish communications via a radio access technology (RAT) with a first cell using the first subscription (e.g., the UE may attempt to establish new radio (NR) communications with the first cell, among other examples of RATs) . The UE may receive control signaling, for example, configuring the UE to report a measurement for the RAT (e.g., the UE may receive a radio resource control (RRC) connection reconfiguration message configuring an NR measurement as described herein) . However, in some cases, the UE may fail to obtain a measurement to report to the first cell in order to establish the communications using the RAT. For example, the UE may have relatively higher priority communications for the second cell (e.g., for communications over another RAT, such as long term evolution (LTE) , universal mobile telecommunications service (UMTS) , global systems for mobile (GSM) communications, among other examples of RATs) . The communications for the second cell may overlap in time with a time period for performing the measurement (e.g., the UE may perform a location update procedure for the second cell, among other examples of signaling between the UE and the second cell using the second subscription that occurs during the time period for obtaining a measurement result) . In such examples, the UE may fail to report the measurement during the time period, which may result in service loss with the first cell (e.g., the first cell may remove the measurement report configuration via an RRC connection reconfiguration message due to failing to receive the measurement) . The UE may be unable to recover service for a relatively long time, for example, because the first cell may be unaware that the UE includes a capability to communicate via the RAT due to failing to receive the measurement.

In accordance with the techniques described herein, the UE may be configured to initiate a service recovery procedure in order to establish communications via the RAT with the first cell, which may result in more efficient communications and enhanced user experiences, among other benefits. In some examples, the UE may identify a trigger for the service recovery procedure. For example, the UE may receive first control signaling from a first cell (e.g., using the first subscription) indicating a removal of a measurement report configuration. The UE may initiate the service recovery procedure based on receiving the first control signaling. For example, the UE may transmit a first uplink message indicating a capability of the UE to communicate using a RAT (e.g., that an NR capability is disabled, among other examples RATs, such as long term evolution (LTE) , universal mobile telecommunications service (UMTS) , global systems for mobile (GSM) communications, etc. ) . The UE may transmit a second uplink message subsequent to the first uplink message. The second uplink message may indicate an updated capability of the UE to communicate using a radio access technology (e.g., that the capability is enabled) . The UE may receive second control signaling, in response to the uplink messages, indicating the measurement report configuration. The second control signaling may enable the UE to report a measurement for the radio access technology in order to establish communications via the radio access technology with the first cell. Such techniques may enable the UE to recover service using the radio access technology relatively quickly, among other advantages.

Aspects of the disclosure are initially described in the context of wireless communications systems and process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to service recovery techniques for wireless communications systems.

FIG. 1 illustrates an example of a wireless communications system 100 that supports service recovery techniques for wireless communications systems 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. In some examples, 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. In some examples, 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.

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.

The base stations 105 may communicate with the core network 130, or with one another, or both. For example, 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. In some examples, 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 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 (e.g., the UE 115 may include one or more subscriptions to one or more networks) , 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. In some examples, 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.

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.

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. For example, 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) . 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.

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) ) . In a system employing MCM techniques, 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) . Thus, the more resource elements that a UE 115 receives and the higher the order of the modulation scheme, the higher the data rate may be for the UE 115. 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.

The time intervals for the base stations 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of T _s=1/ (Δf _max·N _f) seconds, where Δf _max may represent the maximum supported subcarrier spacing, and N _f may represent the maximum supported discrete Fourier transform (DFT) size. 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) .

Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, 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. Alternatively, 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) . In some wireless communications systems 100, 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) . In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, 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) ) 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. For example, 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.

Each base station 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof. The term "cell" may refer to a logical communication entity used for communication with a base station 105 (e.g., over a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) , or others) . In some examples, a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) over which the logical communication entity operates. Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the base station 105. For example, a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with geographic coverage areas 110, among other examples.

A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell. A small cell may be associated with a lower-powered base station 105, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) . A base station 105 may support one or multiple cells and may also support communications over the one or more cells using one or multiple component carriers.

In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices.

In some examples, a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110. In some examples, 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. In other examples, 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. For example, 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) . 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.

In some examples, 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) . 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. In some examples, 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. In some examples, 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) ) . 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. 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, such as a base station 105, 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. In some configurations, 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) . Generally, 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. The 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.

The wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, 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. When operating in unlicensed radio frequency spectrum bands, devices such as the base stations 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, 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. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, 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. Likewise, a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, 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) .

The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. A Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels. A Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 supporting radio bearers for user plane data. At the physical layer, transport channels may be mapped to physical channels.

In some examples, a UE 115 in the wireless communications system 100 may be operating in a dual-subscription mode that includes a first subscription and a second subscription corresponding to a first SIM of the UE 115 and a second SIM of the UE 115, respectively. For example, the UE 115 may be referred to as a DSDS UE 115. A DSDS UE 115 may be configured such that only one SIM can use a configured resource for communications (e.g., uplink transmissions) during a time window. As such, if the first subscription is using the resource for communications during a time window, then the second subscription will be in standby mode and unable to use the configured resources for communication during the time window. The UE 115 may establish a connection with a network using a first subscription, a second subscription, or both. For example, the UE 115 may attempt to establish communications via a RAT with a first cell (e.g., a base station 105) using the first subscription. Additionally or alternatively, the UE 115 may attempt to establish communications via the RAT (or another RAT) with a second cell (e.g., a cell of the same base station 105 or a different base station 105) using the second subscription.

The UE 115 may be configured to initiate a service recovery procedure, for example, to establish communications via the RAT with the first cell. In some examples, the UE 115 may identify a trigger for the service recovery procedure. For example, the UE 115 may receive first control signaling from the first cell (e.g., using the first subscription) indicating a removal of a measurement report configuration. The UE 115 may initiate the service recovery procedure based on receiving the first control signaling. For example, the UE 115 may transmit a first uplink message indicating a capability of the UE 115 to communicate using a RAT (e.g., that an NR capability is disabled, among other examples RATs, such as LTE, UMTS, GSM, etc. ) . The UE 115 may transmit a second uplink message subsequent to the first uplink message. For example, the second uplink message may indicate an updated capability of the UE 115 to communicate using a radio access technology (e.g., that the capability is enabled) . The UE 115 may receive second control signaling, in response to the uplink messages, indicating the measurement report configuration. The second control signaling may enable the UE 115 to report a measurement for the RAT in order to establish communications via the RAT with the first cell. Such techniques may enable the UE 115 to recover service using the radio access technology relatively quickly, among other benefits.

FIG. 2 illustrates an example of a wireless communications system 200 that supports service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure. In some examples, the wireless communications system 200 may implement aspects of wireless communications system 100. For example, the wireless communications system 200 may include UE 115-a and a base station 105-a, which may be respective examples of a UE 115 and a base station 105 as described with reference to FIG. 1.

The UE 115-a may support multiple subscriptions and may be referred to as a multi-SIM UE 115-a or a DSDS UE 115-a. For example, the UE 115-a may include a first subscription 205 and a second subscription 210. Additionally or alternatively, the UE 115-a may include more than one SIM. For example, the first subscription 205 may be associated with a first SIM of the UE 115-a and a second subscription 210 may be associated with a second SIM of the UE 115-a. The UE 115-a may communicate with a base station 105-a via the first subscription 205 and the second subscription 210. For example, the UE 115-a may communicate with a first cell of the base station 105-a using a first subscription link 215 and a second cell of the base station 105-a (or another base station 105) using the second subscription link 220. In some cases, the first subscription 205 and the second subscription 210 may support communications via different RATs. For example, the first subscription 205 may operate using a first RAT (e.g., NR, LTE, UMTS, GSM, wireless local area network (WLAN) , wireless wide area network (WWAN) , or any combination thereof, among other examples of RATs) and the second subscription 210 may operate using a same RAT or a different RAT. In some examples, the first subscription link 215 may be associated with the first subscription 205 and the second subscription link 220 may be associated with the second subscription 210. The first subscription link 215 and the second subscription link 220 may be examples of a communication link 125 as described with respect to FIG. 1.

In some examples, the UE 115-a and the base station 105-a may operate in accordance with a non-standalone (NSA) mode. For example, the UE 115-a and the base station 105-a may implement multiple RATs for communications using a subscription. A cell of the base station 105-a may support communications over multiple RATs and may use a first RAT to establish communications via a second RAT for a subscription of the UE 115-a. As an illustrative example, a cell of the base station 105-a may support NR communications and LTE communications (e.g., the UE 115-a may establish LTE communications with the cell, and the UE 115-a may be enabled to use the LTE communications to establish NR communications with the cell) , although any examples of RATs may be implemented by the wireless communications system 200.

In some examples, the UE 115-a may attempt to establish communications associated with a first RAT using the first subscription 205 (e.g., the UE 115-a may attempt to establish NR communications with an LTE cell of the base station 105-a, among other examples of RATs) . The UE 115-a may receive control signaling, for example, configuring the UE 115-a to report a measurement for the first RAT. As an illustrative example, the UE 115-a may receive an RRC connection reconfiguration message configuring the UE 115-a to report a result of a measurement associated with the first RAT, such as a reference signal receive power (RSRP) measurement, a reference signal received quality (RSRQ) measurement, a signal to noise ratio (SINR) measurement, or any combination thereof.

However, in some cases, the UE 115-a may fail to obtain the measurement to report or may otherwise fail to report to the first cell in order to establish the communications using the first RAT. For example, the UE 115-a may have relatively higher priority communications for a second cell using the second subscription 210. As an illustrative example, the UE 115-a may transmit or receive data or control signaling using the second subscription link 220 (e.g., for communications over a second RAT, such as NR, LTE, UMTS, GSM, among other examples of RATs) .

The communications of the second subscription 210 may overlap in time with a time period for performing the measurement for the first subscription 205 (e.g., the UE 115-a may perform a location update procedure for the second cell, among other examples of signaling between the UE 115-a and the second cell during the time period) . In such examples, the UE 115-a may fail to report the measurement during the time period. For example, the UE 115-a may be unable to perform a measurement for the first RAT while scheduled or dynamic over the air signaling is occurring using the second subscription 210 (e.g., if the UE is operating in DSDS mode) . In such examples, the UE 115-a may experience service loss of the first RAT (e.g., the first cell of the base station 105-a may remove the measurement report configuration via an RRC connection reconfiguration message based on failing to receive the measurement during the time period) . The UE 115-a may be unable to recover service using the first RAT for a relatively long time (e.g., the UE 115-a may fall back to using another RAT for the first cell, such as LTE in a NSA mode) . For example, the first cell may refrain from initiating a connection establishment procedure for the first RAT for a relatively long time (e.g., the first cell may be unaware that the UE 115-a includes a capability to communicate via the first RAT due to failing to receive the measurement) .

The UE 115-a may be configured to initiate a service recovery procedure for the first RAT (e.g., NR or another RAT) of the first subscription 205, which may result in more efficient communications and enhanced user experiences, among other benefits. In some examples, the UE 115-a may identify a trigger for the service recovery procedure. For example, the UE 115-a may receive first control signaling from the first cell (e.g., using the first subscription 205) indicating a removal of a measurement report configuration. In some examples, the first control signaling may include an RRC connection reconfiguration message (e.g., removing an NR MeasObj configuration of the UE 115-a, among other examples of RATs and messages) . The UE 115-a may initiate the service recovery procedure based on receiving the first control signaling. For example, the UE 115-a may identify a capability to communicate using the first RAT, and may initiate the service recovery procedure in response to determining that the measurement report configuration is removed in accordance with the first control signaling.

The UE 115-a may send, to the first cell of the base station 105-a, one or more messages indicating an updated capability of the UE 115-a to communicate using the first RAT. For example, the UE 115-a may transmit a first uplink message indicating that a capability of the UE 115-a to communicate using the first RAT is disabled or currently configured as "off" (e.g., a tracking area update message or an attach message updating an NR capability to "off, " among other examples of messages or RATs) . Additionally or alternatively, the UE 115-a may transmit a second uplink message indicating that a capability of the UE 115-a to communicate using the first RAT is enabled or is currently configured as "on" (e.g., a tracking area update message or an attach message updating an NR capability to "on, " among other examples of messages or RATs) . The sequence of the UE 115-a sending a first uplink message indicating that a capability of the UE 115-a to communicate using the first RAT is disabled followed by a second uplink message indicating that a capability of the UE 115-a to communicate using the first RAT is enabled may trigger the base station 105-a to reinitiate the measurement procedure for the first RAT.

For example, the UE 115-a may receive second control signaling, in response to one or more of the uplink messages, indicating the measurement report configuration. For example, the first cell may send an RRC reconfiguration message to the UE 115-a based on the updated capability of the UE 115-a indicated by an uplink message (e.g., the first cell may configure an NR MeasObj at the UE 115-a using the control signaling, among other examples of measurement configurations and RATs) . The second control signaling may enable the UE 115-a to report a measurement for the first RAT in order to establish communications via the first RAT for the first subscription 205. Such techniques may enable the UE 115-a to recover service using the first RAT relatively quickly (e.g., rather than waiting for the base station 105-a to initiate a connection establishment procedure for the first RAT) , among other advantages.

FIG. 3 illustrates an example of a process flow 300 that supports service recovery techniques for wireless communications systems in accordance with aspects of the present disclosure. In some examples, the process flow 300 may implement aspects of wireless communications systems as described with reference to FIGs. 1 and 2. For example, the process flow 300 may illustrate communications between a first subscription 305-a of a UE 115-b, a second subscription 305-b of the UE 115-b, a first cell 310-a (e.g., a cell of a base station 105) , and a second cell 310-b, which may be examples of the corresponding components described herein with reference to FIGs. 1 and 2. Generally, the process flow 300 may show an illustrative example of a service recovery procedure implemented by a DSDS device such as the UE 115-b.

At 315, the first subscription 305-a and the first cell 310-a may communicate control signaling. The first subscription 305-a and the first cell 310-a may attempt to establish communications via a first RAT (e.g., NR or another RAT) using the control signaling, for example, over a previously established RAT. For example, the first cell 310-a may be an example of an LTE cell that supports an NSA mode and the first subscription 305-a may use LTE communications to establish an NR connection with the first cell 310-a, among other examples of RATs.

As an illustrative example, the control signaling may include an attach procedure. For example, the first subscription 305-a of the UE 115-b may transmit an attach request message to the first cell 310-a. The first cell 310-a may transmit an attach accept message to the first subscription 305-a based on receiving the attach request message. Additionally or alternatively, the first cell 310-a may transmit a configuration message to the first subscription 305-a (e.g., subsequent to transmitting the attach request message) , for example, as part of a connection establishment procedure for configuring the first subscription 305-a with communications via the first RAT (e.g., NR) . In some examples, the configuration message may include an RRC connection reconfiguration message configuring the first subscription 305-a with a measurement report configuration. As an illustrative example, the RRC connection reconfiguration message may indicate a measurement object (e.g., an NR MeasObj) or other measurement report configuration information (e.g., a time period or resources to obtain and report the measurement, a type of the measurement such as RSRP, RSRQ, SINR, or a combination thereof, among other examples of configuration information) .

In some examples, at 320 the UE 115-b may perform relatively higher priority communications for a second subscription 305-b. For example, the second subscription 305-b may transmit or receive communications using a second RAT (e.g., GSM or another RAT) with the second cell 310-b. As an illustrative example, the second subscription 305-b may perform a location update procedure (e.g., the second subscription 305-b may send a location update request message to the second cell 310-b, the second cell 310-b may send a location update accept message to the second subscription 305-b in response to the location update request message, etc. ) , among other examples of relatively higher priority signaling (e.g., a routing update procedure including a routing update request message from the second subscription 305-b and/or a routing update accept message from the second cell 310-b, among other examples of over the air signaling using the second subscription 305-b) .

In some examples, the first subscription 305-a may fail to perform a measurement indicated by the control signaling at 315. For example, the first subscription 305-a may be unable to obtain a measurement result for NR channel conditions during a time period that the second subscription 305-b is communicating with the second cell 310-b. In some such examples, the first cell 310-a may determine that the first subscription 305-a does not include a capability to communicate via the first RAT (e.g., NR) .

At 325, the first cell 310-a may transmit a first control message to the first subscription 305-a. The first control message may remove the measurement report configuration from the first subscription 305-a. For example, the first control message may be an example of a RRC connection reconfiguration message configuring the first subscription 305-a to remove a measurement report configuration. As an illustrative example, the first control message may indicate to remove a measurement object (e.g., an NR MeasObj) , among other examples of indicating to refrain from performing a measurement for the first RAT to the first subscription 305-a.

In some examples, the UE 115-b may identify a trigger to initiate a service recovery procedure. For example, the UE 115-b may initiate the service recovery procedure based on receiving the first control message (e.g., the UE 115-b may determine that the measurement configuration was removed and the UE 115-b may initiate a procedure to restart a connection establishment for the first RAT for the first subscription 305-a) . In some examples, such a service recovery procedure may be relatively quicker, for example, than waiting for the first cell 310-a to restart a connection establishment procedure for the first RAT. In some examples, the service recovery procedure may be implemented to recover an LTE to NR (L2NR) network measurement request from the first cell 310-a under an NSA mode, although it is to be understood that any RAT or combination of RATs may be used.

At 330, the UE 115-b may transmit a first capability message to the first cell 310-a. Thus, the first subscription 305-a of the UE 115-b may update a capability of the first subscription 305-a to communicate using the first RAT, for example, based on identifying the trigger. As an illustrative example, the first subscription 305-a may transmit a tracking area update message or an attach message updating a capability to be off (e.g., the first capability message may include a field indicating that an NR capability is disabled) , among other examples of messages indicating a capability of the UE 115-b. In some examples, the first cell 310-a may send an accept message to the first subscription 305-a in response to the first capability message (e.g., a tracking area update accept message or an attach accept message) .

Additionally or alternatively, at 335, the UE 115-b may transmit a second capability message to the first cell 310-a. Thus, the first subscription 305-a of the UE 115-b may update a capability of the first subscription 305-a to communicate using the first RAT, for example, based on identifying the trigger or based on transmitting the first capability message. As an illustrative example, the first subscription 305-a may transmit a tracking area update message or an attach message updating a capability to be on (e.g., the first capability message may include a field indicating that an NR capability is enabled) , among other examples of messages indicating a capability of the UE 115-b. In some examples, the first cell 310-a may send an accept message to the first subscription 305-a in response to the second capability message (e.g., a tracking area update accept message or an attach accept message) . In some examples, by updating the capability to be "off" and subsequently updating the capability to be "on, " the first cell 310-a may restart the procedure to establish communications via the first RAT relatively quickly, which may result in enhanced user experience and communication efficiency, among other benefits. In some examples, such a capability updating procedure may be referred to as a service recovery procedure, a procedure to refresh a capability to the network, a tracking area update procedure, an attach procedure, or any combination thereof.

For example, at 340, the first cell 310-a may transmit a second control message to the first subscription 305-a based on the first capability message, the second capability message, or both. The second control message may be an example of a RRC connection reconfiguration message (e.g., a retransmission of the configuration message transmitted at 315) . For example, the second control message may configure the measurement report configuration (e.g., the second control message may configure an NR MeasObj, among other examples of RATs) .

At 345, the UE 115-b (e.g., the first subscription 305-a) may perform a measurement. For example, the UE 115-b may obtain a result of a measurement in accordance with a measurement report configuration indicated by the second control message. The measurement may include an RSRP measurement, an RSRQ measurement, an SINR measurement, or any combination thereof. The measurement may be associated with the first RAT (e.g., the measurement may be an example of an NR cell measurement result) .

At 350, the first subscription 305-a may transmit a measurement report to the first cell 310-a. For example, the first subscription 305-a may transmit a message indicating an NR cell measurement result, among other examples of RATs or measurement results. In some examples, at 355 the first cell 310-a may transmit a third control message based on receiving the measurement report. For example, the first cell 310-a may determine that the measurement result indicated by the measurement report satisfies a threshold and the first cell 310-a may transmit the third control message based on the satisfied threshold. The third control message may be an example of a RRC connection reconfiguration message (e.g., configuring a secondary cell group (SCG) for communications with the first RAT, for example, a SCG for NR, among other examples of RATs) , among other examples of control messages for establishing communications. In other words, the first cell 310-a may assign service associated with the first RAT (e.g., NR service) to the first subscription 305-a based on reported NR cell information.

FIG. 4 shows a block diagram 400 of a device 405 that supports service recovery techniques for wireless communications systems 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 service recovery techniques for wireless communications systems, 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 receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology, receive second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based on transmitting the first uplink message and the second uplink message, transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled, and transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is enabled. The communications manager 415 may be an example of aspects of the communications manager 710 described herein.

The communications manager 415, or its sub-components, 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.

The communications manager 415, or its sub-components, 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. In some examples, the communications manager 415, or its sub-components, may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, 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.

The actions performed by the communications manager 415 as described herein may be implemented to realize one or more potential advantages. One implementation may allow a UE 115 to realize enhanced communication efficiency and/or user experience. For example, by initiating a service recovery procedure, the UE 115 may be enabled to update a capability to the network and establish communications using a service relatively quickly, among other advantages.

A processor of a UE 115 (e.g., controlling the receiver 410, the communications manager 415, or the transmitter 420) may operate the components described herein to realize one or more potential advantages. The processor of the UE 115 may implement the techniques described herein to ensure service recovery of a RAT relatively quickly while maintaining relatively high priority communications using another subscription of the UE 115, resulting in efficient communications, among other advantages.

The transmitter 420 may transmit signals generated by other components of the device 405. In some examples, the transmitter 420 may be collocated with a receiver 410 in a transceiver module. For example, 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.

FIG. 5 shows a block diagram 500 of a device 505 that supports service recovery techniques for wireless communications systems 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 535. 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 service recovery techniques for wireless communications systems, 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 control signaling component 520, a first capability component 525, and a second capability component 530. The communications manager 515 may be an example of aspects of the communications manager 710 described herein.

The control signaling component 520 may receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology and receive second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based on transmitting the first uplink message and the second uplink message.

The first capability component 525 may transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled.

The second capability component 530 may transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is enabled.

The transmitter 535 may transmit signals generated by other components of the device 505. In some examples, the transmitter 535 may be collocated with a receiver 510 in a transceiver module. For example, the transmitter 535 may be an example of aspects of the transceiver 720 described with reference to FIG. 7. The transmitter 535 may utilize a single antenna or a set of antennas.

FIG. 6 shows a block diagram 600 of a communications manager 605 that supports service recovery techniques for wireless communications systems 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 control signaling component 610, a first capability component 615, a second capability component 620, an accept message component 625, a measurement component 630, a RAT component 635, a first subscription component 640, a second subscription component 645, a location update component 650, and a routing update component 655. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .

The control signaling component 610 may receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology. In some examples, the control signaling component 610 may receive second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based on transmitting the first uplink message and the second uplink message.

In some examples, the control signaling component 610 may receive third control signaling in response to transmitting the third uplink message, the third control signaling configuring a secondary cell group for the radio access technology at the UE. In some examples, the control signaling component 610 may receive third control signaling from the first cell prior to receiving the first control signaling, the third control signaling indicating the measurement report configuration. In some cases, the first control signaling includes a first radio resource control reconfiguration message, the second control signaling includes a second radio resource control reconfiguration message, the first uplink message includes a tracking area update message or an attach request message, the second uplink message includes a tracking area update message or an attach request message, or any combination thereof. In some cases, the radio access technology includes NR, UMTS, LTE, or any combination thereof. In some cases, the first cell includes an LTE cell, a second cell includes a GSM communications cell, or any combination thereof. In some cases, the UE includes a DSDS device.

The first capability component 615 may transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled.

The second capability component 620 may transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is enabled.

The accept message component 625 may receive, in response to the first uplink message, an accept message from the first cell, where transmitting the second uplink message is in response to receiving the accept message. In some examples, the accept message component 625 may receive, in response to the second uplink message, a second accept message from the first cell.

The measurement component 630 may determine a measurement associated with the radio access technology based on receiving the second control signaling indicating the measurement report configuration. In some examples, the measurement component 630 may transmit a third uplink message to the first cell based on receiving the second control signaling, the third uplink message indicating the measurement associated with the radio access technology. In some examples, the measurement component 630 may refrain from determining a measurement for the first cell based on communicating with the second cell during a time period between receiving the third control signaling and receiving the first control signaling.

The RAT component 635 may communicate with the first cell using the radio access technology based on receiving the third control signaling.

The first subscription component 640 may communicate with the first cell using a first subscription of the UE.

The second subscription component 645 may communicate with a second cell of the wireless communications system using a second subscription of the UE, where communicating with the second cell includes communicating with a second radio access technology. In some cases, the second radio access technology is different than the radio access technology, the second radio access technology including UMTS, LTE, NR, or any combination thereof.

The location update component 650 may transmit a location update request message. In some examples, the location update component 650 may receive a location update accept message in response to the location update request message.

The routing update component 655 may transmit a routing update request message. In some examples, the routing update component 655 may receive a routing update accept message in response to the routing update request message.

FIG. 7 shows a diagram of a system 700 including a device 705 that supports service recovery techniques for wireless communications systems 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) .

The communications manager 710 may receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology, receive second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based on transmitting the first uplink message and the second uplink message, transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled, and transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is enabled.

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. In some cases, the I/O controller 715 may represent a physical connection or port to an external peripheral. In some cases, the I/O controller 715 may utilize an operating system such as

or another known operating system. In other cases, the I/O controller 715 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller 715 may be implemented as part of a processor. In some cases, 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. For example, 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.

In some cases, 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. In some cases, the memory 730 may contain, among other things, a basic input/output system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.

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) . In some cases, the processor 740 may be configured to operate a memory array using a memory controller. In other cases, 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 service recovery techniques for wireless communications systems) .

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 service recovery techniques for wireless communications systems 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. For example, the operations of method 800 may be performed by a communications manager as described with reference to FIGs. 4 through 7. In some examples, 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.

At 805, the UE may receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology. 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 control signaling component as described with reference to FIGs. 4 through 7.

At 810, the UE may transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled. 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 first capability component as described with reference to FIGs. 4 through 7.

At 815, the UE may transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is enabled. 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 second capability component as described with reference to FIGs. 4 through 7.

At 820, the UE may receive second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based on transmitting the first uplink message and the second uplink message. 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 control signaling component as described with reference to FIGs. 4 through 7.

FIG. 9 shows a flowchart illustrating a method 900 that supports service recovery techniques for wireless communications systems 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. For example, the operations of method 900 may be performed by a communications manager as described with reference to FIGs. 4 through 7. In some examples, 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.

At 905, the UE may receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology. 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 control signaling component as described with reference to FIGs. 4 through 7.

At 910, the UE may transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled. 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 first capability component as described with reference to FIGs. 4 through 7.

At 915, the UE may transmit, based on transmitting the first uplink message, a second uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is enabled. 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 second capability component as described with reference to FIGs. 4 through 7.

At 920, the UE may receive second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based on transmitting the first uplink message and the second uplink message. 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 control signaling component as described with reference to FIGs. 4 through 7.

At 925, the UE may determine a measurement associated with the radio access technology based on receiving the second control signaling indicating the measurement report configuration. 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 measurement component as described with reference to FIGs. 4 through 7.

At 930, the UE may transmit a third uplink message to the first cell based on receiving the second control signaling, the third uplink message indicating the measurement associated with the radio access technology. 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 measurement component as described with reference to FIGs. 4 through 7.

It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.

Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system 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. For example, 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.

Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, 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.

The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed with a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. 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. By way of example, and not limitation, 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. Also, any connection is properly termed a computer-readable medium. For example, if 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, then 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, as used herein, 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.

As used herein, including in the claims, "or" as used in a list of items (e.g., a list of items prefaced by a phrase such as "at least one of" or "one or more of" ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase "based on" shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as "based on condition A" may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" shall be construed in the same manner as the phrase "based at least in part on. "

In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.

The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term "example" used herein means "serving as an example, instance, or illustration, " and not "preferred" or "advantageous over other examples. " The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein, but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

A method for wireless communications at a user equipment (UE) , comprising:

receiving first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology;

transmitting, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled;

transmitting, based at least in part on transmitting the first uplink message, a second uplink message to the first cell indicating that the capability of the UE to communicate using the radio access technology is enabled; and

receiving second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based at least in part on transmitting the first uplink message and the second uplink message.
The method of claim 1, further comprising:

receiving, in response to the first uplink message, an accept message from the first cell, wherein transmitting the second uplink message is in response to receiving the accept message; and

receiving, in response to the second uplink message, a second accept message from the first cell.
The method of claim 1, further comprising:

determining a measurement associated with the radio access technology based at least in part on receiving the second control signaling indicating the measurement report configuration; and

transmitting a third uplink message to the first cell based at least in part on receiving the second control signaling, the third uplink message indicating the measurement associated with the radio access technology.
The method of claim 3, further comprising:

receiving third control signaling in response to transmitting the third uplink message, the third control signaling configuring a secondary cell group for the radio access technology at the UE; and

communicating with the first cell using the radio access technology based at least in part on receiving the third control signaling.
The method of claim 1, further comprising:

communicating with the first cell using a first subscription of the UE; and

communicating with a second cell of the wireless communications system using a second subscription of the UE, wherein communicating with the second cell comprises communicating with a second radio access technology.
The method of claim 5, further comprising:

receiving third control signaling from the first cell prior to receiving the first control signaling, the third control signaling indicating the measurement report configuration; and

refraining from determining a measurement for the first cell based at least in part on communicating with the second cell during a time period between receiving the third control signaling and receiving the first control signaling.
The method of claim 6, wherein communicating with the second cell during the time period comprises:

transmitting a location update request message; and

receiving a location update accept message in response to the location update request message.
The method of claim 6, wherein communicating with the second cell during the time period comprises:

transmitting a routing update request message; and

receiving a routing update accept message in response to the routing update request message.
The method of claim 5, wherein the second radio access technology is different than the radio access technology, the second radio access technology comprising universal mobile telecommunications service (UMTS) , long term evolution (LTE) , new radio (NR) , or any combination thereof.
The method of claim 1, wherein the first control signaling comprises a first radio resource control reconfiguration message, the second control signaling comprises a second radio resource control reconfiguration message, the first uplink message comprises a tracking area update message or an attach request message, the second uplink message comprises a second tracking area update message or a second attach request message, or any combination thereof.
The method of claim 1, wherein the radio access technology comprises New Radio (NR) , universal mobile telecommunications service (UMTS) , long term evolution (LTE) , or any combination thereof.
The method of claim 1, wherein the first cell comprises a long term evolution (LTE) cell, a second cell comprises a global systems for mobile (GSM) communications cell, or any combination thereof.
The method of claim 1, wherein the UE comprises a dual cards dual standby (DSDS) device.
An apparatus for wireless communications at a user equipment (UE) , comprising:

a processor,

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology;

transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled;

transmit, based at least in part on transmitting the first uplink message, a second uplink message to the first cell indicating that the capability of the UE to communicate using the radio access technology is enabled; and

receive second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based at least in part on transmitting the first uplink message and the second uplink message.
The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to:

receive, in response to the first uplink message, an accept message from the first cell, wherein transmitting the second uplink message is in response to receiving the accept message; and

receive, in response to the second uplink message, a second accept message from the first cell.
The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to:

determine a measurement associated with the radio access technology based at least in part on receiving the second control signaling indicating the measurement report configuration; and

transmit a third uplink message to the first cell based at least in part on receiving the second control signaling, the third uplink message indicating the measurement associated with the radio access technology.
The apparatus of claim 16, wherein the instructions are further executable by the processor to cause the apparatus to:

receive third control signaling in response to transmitting the third uplink message, the third control signaling configuring a secondary cell group for the radio access technology at the UE; and

communicate with the first cell using the radio access technology based at least in part on receiving the third control signaling.
The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to:

communicate with the first cell using a first subscription of the UE; and

the instructions to communicate with a second cell of the wireless communications system using a second subscription of the UE, wherein communicating with the second cell are executable by the processor to cause the apparatus to communicate with a second radio access technology.
The apparatus of claim 18, wherein the instructions are further executable by the processor to cause the apparatus to:

receive third control signaling from the first cell prior to receiving the first control signaling, the third control signaling indicating the measurement report configuration; and

refrain from determining a measurement for the first cell based at least in part on communicating with the second cell during a time period between receiving the third control signaling and receiving the first control signaling.
The apparatus of claim 19, wherein the instructions to communicate with the second cell during the time period are executable by the processor to cause the apparatus to:

transmit a location update request message; and

receive a location update accept message in response to the location update request message.
The apparatus of claim 19, wherein the instructions to communicate with the second cell during the time period are executable by the processor to cause the apparatus to:

transmit a routing update request message; and

receive a routing update accept message in response to the routing update request message.
The apparatus of claim 18, wherein the second radio access technology is different than the radio access technology, the second radio access technology comprising universal mobile telecommunications service (UMTS) , long term evolution (LTE) , new radio (NR) , or any combination thereof.
The apparatus of claim 14, wherein the first control signaling comprises a first radio resource control reconfiguration message, the second control signaling comprises a second radio resource control reconfiguration message, the first uplink message comprises a tracking area update message or an attach request message, the second uplink message comprises a second tracking area update message or a second attach request message, or any combination thereof.
The apparatus of claim 14, wherein the radio access technology comprises New Radio (NR) , universal mobile telecommunications service (UMTS) , long term evolution (LTE) , or any combination thereof.
The apparatus of claim 14, wherein the first cell comprises a long term evolution (LTE) cell, a second cell comprises a global systems for mobile (GSM) communications cell, or any combination thereof.
The apparatus of claim 14, wherein the UE comprises a dual cards dual standby (DSDS) device.
An apparatus for wireless communications at a user equipment (UE) , comprising:

means for receiving first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology;

means for transmitting, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled;

means for transmitting, based at least in part on transmitting the first uplink message, a second uplink message to the first cell indicating that the capability of the UE to communicate using the radio access technology is enabled; and

means for receiving second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based at least in part on transmitting the first uplink message and the second uplink message.
The apparatus of claim 27, further comprising:

means for receiving, in response to the first uplink message, an accept message from the first cell, wherein transmitting the second uplink message is in response to receiving the accept message; and

means for receiving, in response to the second uplink message, a second accept message from the first cell.
The apparatus of claim 27, further comprising:

means for determining a measurement associated with the radio access technology based at least in part on receiving the second control signaling indicating the measurement report configuration; and

means for transmitting a third uplink message to the first cell based at least in part on receiving the second control signaling, the third uplink message indicating the measurement associated with the radio access technology.
The apparatus of claim 29, further comprising:

means for receiving third control signaling in response to transmitting the third uplink message, the third control signaling configuring a secondary cell group for the radio access technology at the UE; and

means for communicating with the first cell using the radio access technology based at least in part on receiving the third control signaling.
The apparatus of claim 27, further comprising:

means for communicating with the first cell using a first subscription of the UE; and

means for communicating with a second cell of the wireless communications system using a second subscription of the UE, wherein communicating with the second cell comprises communicating with a second radio access technology.
The apparatus of claim 31, further comprising:

means for receiving third control signaling from the first cell prior to receiving the first control signaling, the third control signaling indicating the measurement report configuration; and

means for refraining from determining a measurement for the first cell based at least in part on communicating with the second cell during a time period between receiving the third control signaling and receiving the first control signaling.
The apparatus of claim 32, wherein the means for communicating with the second cell during the time period comprises:

means for transmitting a location update request message; and

means for receiving a location update accept message in response to the location update request message.
The apparatus of claim 32, wherein the means for communicating with the second cell during the time period comprises:

means for transmitting a routing update request message; and

means for receiving a routing update accept message in response to the routing update request message.
The apparatus of claim 31, wherein the second radio access technology is different than the radio access technology, the second radio access technology comprising universal mobile telecommunications service (UMTS) , long term evolution (LTE) , new radio (NR) , or any combination thereof.
The apparatus of claim 27, wherein the first control signaling comprises a first radio resource control reconfiguration message, the second control signaling comprises a second radio resource control reconfiguration message, the first uplink message comprises a tracking area update message or an attach request message, the second uplink message comprises a second tracking area update message or a second attach request message, or any combination thereof.
The apparatus of claim 27, wherein the radio access technology comprises New Radio (NR) , universal mobile telecommunications service (UMTS) , long term evolution (LTE) , or any combination thereof.
The apparatus of claim 27, wherein the first cell comprises a long term evolution (LTE) cell, a second cell comprises a global systems for mobile (GSM) communications cell, or any combination thereof.
The apparatus of claim 27, wherein the UE comprises a dual cards dual standby (DSDS) device.
A non-transitory computer-readable medium storing code for wireless communications at a user equipment (UE) , the code comprising instructions executable by a processor to:

receive first control signaling from a first cell of a wireless communications system, the control signaling indicating a removal of a measurement report configuration associated with a radio access technology;

transmit, in response to receiving the first control signaling, a first uplink message to the first cell indicating that a capability of the UE to communicate using the radio access technology is disabled;

transmit, based at least in part on transmitting the first uplink message, a second uplink message to the first cell indicating that the capability of the UE to communicate using the radio access technology is enabled; and

receive second control signaling from the first cell indicating the measurement report configuration associated with the radio access technology based at least in part on transmitting the first uplink message and the second uplink message.
The non-transitory computer-readable medium of claim 40, wherein the instructions are further executable to:

receive, in response to the first uplink message, an accept message from the first cell, wherein transmitting the second uplink message is in response to receiving the accept message; and

receive, in response to the second uplink message, a second accept message from the first cell.
The non-transitory computer-readable medium of claim 40, wherein the instructions are further executable to:

determine a measurement associated with the radio access technology based at least in part on receiving the second control signaling indicating the measurement report configuration; and

transmit a third uplink message to the first cell based at least in part on receiving the second control signaling, the third uplink message indicating the measurement associated with the radio access technology.
The non-transitory computer-readable medium of claim 42, wherein the instructions are further executable to:

receive third control signaling in response to transmitting the third uplink message, the third control signaling configuring a secondary cell group for the radio access technology at the UE; and

communicate with the first cell using the radio access technology based at least in part on receiving the third control signaling.
The non-transitory computer-readable medium of claim 40, wherein the instructions are further executable to:

communicate with the first cell using a first subscription of the UE; and

the instructions to communicate with a second cell of the wireless communications system using a second subscription of the UE, wherein communicating with the second cell are executable by the processor to cause the apparatus to communicate with a second radio access technology.
The non-transitory computer-readable medium of claim 44, wherein the instructions are further executable to:

receive third control signaling from the first cell prior to receiving the first control signaling, the third control signaling indicating the measurement report configuration; and

refrain from determining a measurement for the first cell based at least in part on communicating with the second cell during a time period between receiving the third control signaling and receiving the first control signaling.
The non-transitory computer-readable medium of claim 45, wherein the instructions to communicate with the second cell during the time period are executable to:

transmit a location update request message; and

receive a location update accept message in response to the location update request message.
The non-transitory computer-readable medium of claim 45, wherein the instructions to communicate with the second cell during the time period are executable to:

transmit a routing update request message; and

receive a routing update accept message in response to the routing update request message.
The non-transitory computer-readable medium of claim 44, wherein the second radio access technology is different than the radio access technology, the second radio access technology comprising universal mobile telecommunications service (UMTS) , long term evolution (LTE) , new radio (NR) , or any combination thereof.
The non-transitory computer-readable medium of claim 40, wherein the first control signaling comprises a first radio resource control reconfiguration message, the second control signaling comprises a second radio resource control reconfiguration message, the first uplink message comprises a tracking area update message or an attach request message, the second uplink message comprises a second tracking area update message or a second attach request message, or any combination thereof.
The non-transitory computer-readable medium of claim 40, wherein the radio access technology comprises New Radio (NR) , universal mobile telecommunications service (UMTS) , long term evolution (LTE) , or any combination thereof.
The non-transitory computer-readable medium of claim 40, wherein the first cell comprises a long term evolution (LTE) cell, a second cell comprises a global systems for mobile (GSM) communications cell, or any combination thereof.
The non-transitory computer-readable medium of claim 40, wherein the UE comprises a dual cards dual standby (DSDS) device.