CN116941207A

CN116941207A - UE optimization for 5G independent networking connection and fault control

Info

Publication number: CN116941207A
Application number: CN202180095173.4A
Authority: CN
Inventors: 史敦发; S·兰詹; N·C·B·古迪瓦达; 金汤
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2023-10-24
Also published as: WO2022188092A1

Abstract

Various aspects of the present disclosure relate generally to wireless communications. In some aspects, a User Equipment (UE) may detect a trigger associated with a failure to connect to a first cell associated with a first Radio Access Technology (RAT). The UE may adjust parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger. The UE may connect to a second cell associated with a second RAT based at least in part on adjusting the parameters of the at least one network configuration. Numerous other aspects are described.

Description

UE optimization for 5G independent networking connection and fault control

FIELD OF THE DISCLOSURE

Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for User Equipment (UE) optimization for 5G independent networking connection and failure control.

Background

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access techniques include Code Division Multiple Access (CDMA) systems, time Division Multiple Access (TDMA) systems, frequency Division Multiple Access (FDMA) systems, orthogonal Frequency Division Multiple Access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-advanced is an enhancement set to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the third generation partnership project (3 GPP).

A wireless network may include several Base Stations (BSs) capable of supporting several User Equipment (UE) communications. The UE may communicate with the BS via the downlink and uplink. "downlink" (or "forward link") refers to the communication link from the BS to the UE, and "uplink" (or "reverse link") refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a node B, a gNB, an Access Point (AP), a radio head, a transmission-reception point (TRP), a New Radio (NR) BS, a 5G B node, and so on.

The above multiple access techniques have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at the urban, national, regional, and even global level. NR (which may also be referred to as 5G) is an enhanced set of LTE mobile standards promulgated by 3 GPP. NR is designed to better support mobile broadband internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the Downlink (DL) (CP-OFDM), CP-OFDM and/or SC-FDM on the Uplink (UL) (e.g., also known as discrete fourier transform spread OFDM (DFT-s-OFDM)), and supporting beamforming, multiple Input Multiple Output (MIMO) antenna technology and carrier aggregation to improve spectral efficiency, reduce cost, improve service, utilize new spectrum, and integrate better with other open standards. As the demand for mobile broadband access continues to grow, further improvements to LTE, NR and other radio access technologies remain useful.

SUMMARY

In some aspects, a method of performing wireless communication by a User Equipment (UE) includes: detecting a trigger associated with a first cell failure associated with a first Radio Access Technology (RAT) connection; adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger; and connect to a second cell associated with a second RAT based at least in part on adjusting the parameter of the at least one network configuration.

In some aspects, a UE for wireless communication, comprises: a memory and one or more processors coupled to the memory, the one or more processors configured to: detecting a trigger associated with a failure to connect to a first cell associated with a first RAT; adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT in connection with detecting the trigger; and connect to a second cell associated with a second RAT based at least in part on adjusting the parameter of the at least one network configuration.

In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: detecting a trigger associated with a failure to connect to a first cell associated with a first RAT; adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger; and connect to a second cell associated with a second RAT based at least in part on adjusting the parameter of the at least one network configuration.

In some aspects, an apparatus for wireless communication includes means for detecting a trigger associated with a failure to connect to a first cell associated with a first RAT; means for adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger; and means for connecting to a second cell associated with a second RAT based at least in part on adjusting the parameter of the at least one network configuration.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated in the accompanying drawings and the appendix.

The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein, both as to their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in connection with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description, and is not intended to be limiting of the claims.

While aspects are described in this disclosure by way of illustration of some examples, those skilled in the art will appreciate that such aspects may be implemented in many different arrangements and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or package layouts. For example, some aspects may be implemented via integrated chip embodiments or other non-module component based devices (e.g., end user devices, vehicles, communication devices, computing devices, industrial equipment, retail/shopping devices, medical devices, or artificial intelligence enabled devices). Aspects may be implemented in a chip-level component, a module component, a non-chip-level component, a device-level component, or a system-level component. Devices incorporating the described aspects and features may include additional components and features for achieving and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include several components (e.g., hardware components including antennas, radio Frequency (RF) chains, power amplifiers, modulators, buffers, processor(s), interleavers, adders/summers, etc.) for analog and digital purposes. Aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, or end user devices of various sizes, shapes, and configurations.

Brief Description of Drawings

So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

Fig. 2 is a diagram illustrating an example in which a base station is in communication with a User Equipment (UE) in a wireless network according to the present disclosure.

Fig. 3 is a diagram illustrating an example associated with UE optimization of 5G independent networking connection and failure control in accordance with the present disclosure.

Fig. 4 is a diagram illustrating an example process associated with UE optimization of 5G independent networking connection and failure control in accordance with this disclosure.

Fig. 5 is a block diagram of an example apparatus for wireless communication according to the present disclosure.

Detailed Description

Various aspects of the disclosure are described more fully below with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein one skilled in the art will appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method practiced using any number of the aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such an apparatus or method that is practiced using such structure, functionality, or both as a complement to, or in addition to, the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

Several aspects of a telecommunications system will now be presented with reference to various apparatus and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

It should be noted that although aspects may be described herein using terms commonly associated with 5G or NR Radio Access Technologies (RATs), aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and/or RATs after 5G (e.g., 6G).

Fig. 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (NR) network and/or an LTE network, etc. or may include elements thereof. Wireless network 100 may include several base stations 110 (shown as BS110a, BS110b, BS110c, and BS110 d) and other network entities. A Base Station (BS) is an entity that communicates with User Equipment (UE) and may also be referred to as an NR BS, node B, gNB, 5G B Node (NB), access point, transmission-reception point (TRP), and so forth. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" can refer to a coverage area of a BS and/or a BS subsystem serving the coverage area, depending on the context in which the term is used.

The BS may provide communication coverage for a macrocell, a picocell, a femtocell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A picocell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG)). The BS for a macro cell may be referred to as a macro BS. The BS for a pico cell may be referred to as a pico BS. The BS for a femto cell may be referred to as a femto BS or a home BS. In the example shown in fig. 1, BS110a may be a macro BS for macro cell 102a, BS110b may be a pico BS for pico cell 102b, and BS110c may be a femto BS for femto cell 102 c. The BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "node B," "5G NB," and "cell" may be used interchangeably herein.

In some aspects, the cells may not necessarily be stationary, and the geographic area of the cells may move according to the location of the mobile BS. In some aspects, BSs may interconnect each other and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

The wireless network 100 may also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., BS or UE) and send the transmission of the data to a downstream station (e.g., UE or BS). The relay station may also be a UE that can relay transmissions for other UEs. In the example shown in fig. 1, relay BS110d may communicate with macro BS110a and UE 120d to facilitate communications between BS110a and UE 120 d. The relay BS may also be referred to as a relay station, a relay base station, a relay, etc.

The wireless network 100 may be a heterogeneous network including different types of BSs (such as macro BS, pico BS, femto BS, relay BS, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, femto BS, and relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

The network controller 130 may be coupled to a set of BSs and may provide coordination and control of the BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, e.g., via a wireless or wired backhaul.

UEs 120 (e.g., 120a, 120b, 120 c) may be dispersed throughout wireless network 100, and each UE may be stationary or mobile. A UE may also be called an access terminal, mobile station, subscriber unit, station, etc. The UE may be a cellular telephone (e.g., a smart phone), a Personal Digital Assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, a super book, a medical device or equipment, a biometric sensor/device, a wearable device (smart watch, smart garment, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., music or video device, or satellite radio), a vehicle component or sensor, a smart meter/sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

Some UEs may be considered Machine Type Communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and/or location tags, which may communicate with a base station, another device (e.g., a remote device), or some other entity. The wireless node may provide connectivity to or to a network (e.g., a wide area network such as the internet or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered internet of things (IoT) devices and/or may be implemented as NB-IoT (narrowband internet of things) devices. Some UEs may be considered Customer Premise Equipment (CPE). UE 120 may be included within a housing that houses components of UE 120, such as processor components and/or memory components. In some aspects, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., memory) can be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular RAT and may operate on one or more frequencies. RATs may also be referred to as radio technologies, air interfaces, etc. Frequencies may also be referred to as carriers, frequency channels, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120 e) may communicate directly (e.g., without the base station 110 as an intermediary) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, a vehicle-to-vehicle (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol or a vehicle-to-infrastructure (V2I) protocol), and/or a mesh network. In this case, UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by base station 110.

Devices of the wireless network 100 may communicate using electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices of the wireless network 100 may communicate using an operating frequency band having a first frequency range (FR 1) and/or may communicate using an operating frequency band having a second frequency range (FR 2), the first frequency range (FR 1) may span 410MHz to 7.125GHz, and the second frequency range (FR 2) may span 24.25GHz to 52.6GHz. The frequency between FR1 and FR2 is sometimes referred to as the mid-band frequency. Although a portion of FR1 is greater than 6GHz, FR1 is commonly referred to as the "sub-6 GHz" band. Similarly, FR2 is commonly referred to as the "millimeter wave" frequency band, although it is different from the Extremely High Frequency (EHF) frequency band (30 GHz-300 GHz) identified by the International Telecommunications Union (ITU) as the "millimeter wave" frequency band. Thus, unless specifically stated otherwise, it should be understood that, if used herein, the term "sub-6 GHz" and the like may broadly refer to frequencies less than 6GHz, frequencies within FR1, and/or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless specifically stated otherwise, it should be understood that, if used herein, the term "millimeter wave" or the like may broadly refer to frequencies within the EHF band, frequencies within FR2, and/or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

As indicated above, fig. 1 is provided as an example. Other examples may differ from the example described with respect to fig. 1.

Fig. 2 is a diagram illustrating an example 200 in which a base station 110 is in communication with a UE 120 in a wireless network 100 according to the present disclosure. Base station 110 may be equipped with T antennas 234a through 234T, while UE 120 may be equipped with R antennas 252a through 252R, where in general T is 1 and R is 1.

At base station 110, transmit processor 220 may receive data for one or more UEs from data source 212, select one or more Modulation and Coding Schemes (MCSs) for each UE based at least in part on a Channel Quality Indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS(s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-Static Resource Partitioning Information (SRPI)) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary Synchronization Signals (PSS) or Secondary Synchronization Signals (SSS)). A Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T Modulators (MODs) 232a through 232T. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232T may be transmitted via T antennas 234a through 234T, respectively.

At UE 120, antennas 252a through 252r may receive the downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254R, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280. The term "controller/processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a Reference Signal Received Power (RSRP) parameter, a Received Signal Strength Indicator (RSSI) parameter, a Reference Signal Received Quality (RSRQ) parameter, and/or a CQI parameter, among others. In some aspects, one or more components of UE 120 may be included in housing 284.

The network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292. The network controller 130 may comprise, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via a communication unit 294.

Antennas (e.g., antennas 234a through 234t and/or antennas 252a through 252 r) may include or be included in one or more antenna panels, antenna groups, sets of antenna elements, and/or antenna arrays, etc. The antenna panel, antenna group, antenna element set, and/or antenna array may include one or more antenna elements. The antenna panel, antenna group, antenna element set, and/or antenna array may include a coplanar antenna element set and/or a non-coplanar antenna element set. The antenna panel, antenna group, antenna element set, and/or antenna array may include antenna elements within a single housing and/or antenna elements within multiple housings. The antenna panel, antenna group, antenna element set, and/or antenna array may include one or more antenna elements coupled to one or more transmission and/or reception components, such as one or more components of fig. 2.

On the uplink, at UE 120, transmit processor 264 may receive and process data from data source 262 and control information from controller/processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and/or CQI). Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some aspects, a modulator and demodulator (e.g., MOD/DEMOD 254) of UE 120 may be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, modulator and/or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, and/or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller/processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as described with reference to fig. 3-4).

At base station 110, uplink signals from UE 120 as well as other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller/processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. Base station 110 may include a scheduler 246 to schedule UEs 120 for downlink and/or uplink communications. In some aspects, a modulator and demodulator (e.g., MOD/DEMOD 232) of base station 110 may be included in a modem of base station 110. In some aspects, the base station 110 comprises a transceiver. The transceiver may include any combination of antenna(s) 234, modulator and/or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and/or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller/processor 240) and memory 242 to perform aspects of any of the methods described herein, e.g., as described with reference to fig. 3-4.

The controller/processor 240 of the base station 110, the controller/processor 280 of the UE 120, and/or any other component(s) of fig. 2 may perform one or more techniques associated with 5G independent networking connection and failure controlled UE optimization, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component(s) of fig. 2 may perform or direct operations of process 400 of fig. 4 and/or other processes as described herein, for example. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and/or memory 282 may include: a non-transitory computer readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and/or UE 120 (e.g., directly, or after compilation, conversion, and/or interpretation), may cause the one or more processors, UE 120, and/or base station 110 to perform or direct operations such as process 400 of fig. 4 and/or other processes as described herein. In some aspects, executing instructions may include executing instructions, converting instructions, compiling instructions, and/or interpreting instructions, among others.

In some aspects, UE 120 includes means for detecting a trigger associated with a failure to connect to a first cell associated with a first RAT; means for adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger; and/or means for connecting to a second cell associated with a second RAT based at least in part on adjusting the parameter of the at least one network configuration. Means for UE 120 to perform the operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller/processor 280, or memory 282.

In some aspects, UE 120 includes means for detecting that a timer associated with a Radio Resource Control (RRC) connection request expires for at least a threshold number of repeated RRC connection requests transmitted by the UE to request an RRC connection with a first cell associated with a first RAT.

In some aspects, UE 120 includes means for detecting expiration of a first timer that initiates a connection re-establishment procedure followed by expiration of a second timer associated with an RRC connection request transmitted by the UE to request an RRC connection with a first cell associated with a first RAT.

In some aspects, UE 120 includes means for detecting at least a threshold number of random access channel failures within a duration.

In some aspects, UE 120 includes means for detecting that a random access channel procedure is initiated at least a threshold number of times within a duration.

In some aspects, UE 120 includes means for detecting at least a threshold number of duplicate radio link failures on a first cell associated with a first RAT.

In some aspects, UE 120 includes means for detecting at least a threshold number of repeated out-of-service indications.

In some aspects, UE 120 includes means for adjusting an offset value of a network configuration associated with a failure to establish an RRC connection with the first cell, resulting in an adjusted offset value.

In some aspects, UE 120 includes means for reducing at least one of RSRP measurements for the first cell or RSRQ measurements for the first cell by an offset value of the network configuration based at least in part on the first number of failed connections to the first cell; or reduce the at least one of RSRP for the first cell or RSRQ measurements for the first cell by the adjusted offset value based at least in part on detecting the trigger, wherein the trigger is associated with a second number of failed connections to the first cell, and the second number is greater than the first number.

In some aspects, UE 120 includes means for determining an offset value that is increased compared to the network configured offset value based at least in part on at least one of an RSRP measurement for the first cell, an RSRQ measurement for the first cell, or a signal-to-noise ratio (SNR) measurement for the first cell; and/or means for reducing RSRP measurements for the first cell by the increased offset value.

In some aspects, UE 120 includes means for determining the increased offset value using a trained machine learning model.

In some aspects, UE 120 includes means for increasing the offset value of the network configuration by an amount based at least in part on the number of consecutive random access channel failures.

In some aspects, UE 120 includes means for lowering a priority of a first cell associated with a first RAT.

In some aspects, UE 120 includes means for increasing a priority of a second cell associated with a second RAT.

In some aspects, UE 120 includes means for excluding the first cell from a set of available cells with which to establish a radio resource control connection.

In some aspects, UE 120 includes means for adjusting an offset value of a network configuration associated with a failure to establish an RRC connection with a first cell; and/or means for adjusting at least one of a priority of a first cell associated with the first RAT or a priority of a second cell associated with the second RAT.

Although the blocks in fig. 2 are illustrated as distinct components, the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combination of components or a combination of various components. For example, the functions described with respect to transmit processor 264, receive processor 258, and/or TX MIMO processor 266 may be performed by controller/processor 280 or under the control of controller/processor 280.

As indicated above, fig. 2 is provided as an example. Other examples may differ from the example described with respect to fig. 2.

The 5G/NR network can be deployed in a non-independent networking mode or an independent networking mode. In the non-standalone networking mode, the 5G/NR network may depend on the control plane of the existing 4G/LTE network. In this case, a UE operating in a non-independent networking mode may be connected to a 4G/LTE base station and a 5G/NR base station. In the standalone networking mode of 5G/NR, the 5G/NR network can use 5G cells for both control signaling and data/information transmission. In this case, a UE operating in 5G/NR independent networking mode may only be able to connect to a 5G/NR base station. In some examples, 5G/NR independent networking mode commercial deployment has started with FR1, including the sub-6 GHz band of the 5G core network.

In some cases, deploying a 5G/NE network in an independent networking mode may lead to problems with connection control, failure control, and/or cell reselection for UEs, for example, due to lack of maturity and/or persistence of the 5G core network. In some examples, a UE operating in a 5G independent networking mode may attempt to transmit an RRC registration request to establish a connection on a 5G cell and may fail, for example, due to a Random Access Channel (RACH) failure due to weak channel conditions. For example, the UE may attempt to transmit a registration request after exiting the flight mode due to Default Data Service (DDS) activity. The UE may be able to detect a 4G/LTE cell with better quality, but the DDS may continue to attempt RRC registration and/or RACH procedure multiple times in a poor quality 5G cell even after the T300 timer expires (e.g., due to the 5G cell being associated with a higher priority RAT (e.g., 5G/NR) than the 4G/LTE cell). The UE may apply network configured parameters (e.g., connEstFailureControl parameters configured in a System Information Block (SIB)) associated with failure to establish a connection and/or cell reselection, which may cause RRC de-prioritization of the 5G cell. However, the de-prioritization caused by the network configured parameters may not be sufficient to overcome (or may require a large number of repetitions to overcome) the relative priorities of the 5G RAT and the 4G RAT and/or the reselection criteria for switching from the 5G cell to the 4G cell. In this case, the UE may still be stuck attempting to establish a connection on a poor quality 5G cell for a long duration, but not be able to move to a higher quality 4G cell. This may result in reduced network speed or throughput, and/or failure of the UE to transmit and/or receive data. This may also result in increased power consumption by the UE (e.g., due to the UE repeatedly performing RACH procedures to attempt to establish a connection on the 5G cell).

Some techniques and apparatuses described herein enable a UE to detect a trigger associated with a failure to connect to a first cell associated with a first RAT. The UE may adjust parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger. The UE may connect to a second cell associated with a second RAT based at least in part on adjusting the parameters of the at least one network configuration. In some aspects, the first RAT may be a 5G RAT, such as a 5G independent networking RAT; while the second RAT may be another technology, such as a 4G LTE RAT. As a result, the UE may adjust parameters of the network configuration to de-prioritize the first cell so that the UE quickly performs cell reselection and reselects the second cell. This may reduce the duration of the UE moving from a weaker cell (e.g., a weaker 5G cell) to a stronger cell (e.g., a strong 4G cell) compared to repeatedly applying the parameters of the network configuration. Thus, the UE may increase network speed and throughput and reduce the amount of time during which the UE cannot transmit and/or receive data. Furthermore, the UE may reduce repetition of RACH procedure to attempt to establish a connection on a weak cell, resulting in reduced power consumption of the UE.

Fig. 3 is a diagram illustrating an example 300 associated with UE optimization of 5G independent networking connection and failure control in accordance with this disclosure. As shown in fig. 3, example 300 includes communications between UE 120, first base station 110-1, and second base station 110-2. In some aspects, UE 120, first base station 110-1, and second base station 110-2 may be included in one or more wireless networks, such as wireless network 100. UE 120 may communicate with first base station 110-1 and second base station 110-2 via respective wireless access links (which may include uplink and downlink).

The first base station 110-1 may be associated with a first RAT and the second base station 110-2 may be associated with a second RAT. In some aspects, the first RAT may be a 5G/NR RAT and the first base station 110-1 may be a 5G/NR base station (e.g., a gNB). For example, the first RAT may be a 5G RAT deployed in an independent networking mode, referred to herein as a 5G independent networking RAT. In this case, UE 120 may communicate using the first RAT when operating in the 5G independent networking mode. In some aspects, the second RAT may be a 4G/LTE RAT and the second base station 110-2 may be a 4G/LTE base station (e.g., eNB). Although some aspects may be described herein in which the first RAT is a 5G RAT and the second RAT is a 4G RAT, in some aspects the first and/or second RAT may be any type of RAT. For example, the first RAT and the second RAT may be any combination of RATs, such as a 3G RAT, a 4G RAT, a 5G RAT (FR 1 and/or FR 2), and/or a RAT after 5G.

As in fig. 3 and indicated by reference numeral 305, UE 120 may receive parameters of the network configuration related to connection failure and/or cell reselection in the first RAT from first base station 110-1. In some aspects, a first cell associated with a first RAT (e.g., a cell associated with the first base station 110-1) may be a serving cell of the UE 120 and a second cell associated with a second RAT (e.g., a cell associated with the second base station 110-2) may be a neighbor cell of the serving cell (e.g., the first cell). In some aspects, the parameters of the network configuration may be included in one or more SIBs transmitted (e.g., broadcast) from the first UE 120-1. For example, UE 120 may receive parameters of the network configuration in a type 1SIB (SIB 1) transmission from first base station 110-1 and/or a type 5SIB (SIB 5) transmission from both first base station 110-1.

In some aspects, the parameters of the network configuration may include parameters of one or more network configurations related to connection failure in SIB1 transmission. For example, the parameters of the network configuration may include parameters associated with a connEstFailureControl configuration in SIB1 transmission. In this case, the parameters of the network configuration may include a failure count parameter (e.g., connEstFailCount), an offset duration parameter (e.g., connEstFailOffsetValidity), and/or an offset parameter (e.g., connEstFailOffset). The failure count parameter may indicate the number of failures on the same cell (e.g., the number of times UE 120 detects expiration of the T300 timer) before applying the offset parameter. The offset parameter may indicate an offset (e.g., in decibels (dB)) to be temporarily applied to and/or to penalize/reduce RSRP and/or RSRQ measurements for the first cell. The offset duration parameter may indicate a duration for which the offset parameter is to be temporarily applied.

Additionally or alternatively, in some aspects, the parameters of the network configuration may include parameters of one or more network configurations related to cell reselection in SIB5 transmission. SIB5 transmissions may include evolved Universal Mobile Telecommunications System (UMTS) terrestrial radio access (E-UTRA)/LTE neighbor cell list and reselection criteria. The system information in SIB5 transmission may include information indicating a list of carrier frequencies for one or more neighboring 4G/LTE RATs (e.g., a second RAT). For example, the carrier frequency list may include an indication of an E-UTRA absolute radio frequency channel number (EARFCN) for each carrier frequency of the one or more neighboring 4G/LTE RATs. In some aspects, the second RAT may be a neighboring RAT having a high energy carrier frequency (e.g., EARFCN). In some aspects, the parameters of the network configuration included in SIB5 may include a priority of the network configuration associated with the second RAT (e.g., a reselection priority), a priority of the network configuration associated with the second cell (e.g., a reselection priority), and/or a priority of the network configuration associated with a carrier frequency for the second cell (e.g., a reselection priority).

In some aspects, the parameters of the network configuration may include parameters of one or more network configurations related to cell reselection in a type 2SIB (SIB 2) transmission from the first base station 110-1. For example, parameters of the network configuration included in SIB2 transmission may include a priority (e.g., reselection priority) associated with the first RAT and/or the first cell and one or more reselection thresholds (e.g., S-non intra-search P, S-non intra-search Q, threshServingLowP, and/or threshServingLowQ). In some aspects, the parameters of the network configuration may include any other parameters of the network configuration related to a failure to establish a connection with the first network and/or perform a cell reselection. In some aspects, UE 120 may receive one or more network configured parameters in one or more SIBs other than SIB1, SIB2, and/or SIB 5.

As further shown in fig. 3 and by reference numeral 310, UE 120 may attempt to connect to a first cell associated with a first RAT. In some aspects, UE 120 may attempt to connect to the first cell upon power up of UE 120, or upon UE 120 exiting an in-flight mode, or the like. In some aspects, UE 120 may transmit one or more requests (e.g., one or more RRC registration requests) to first base station 110-1 to establish an RRC connection with a first cell associated with the first RAT. In some cases, the request to establish an RRC connection with the first cell may be unsuccessful, and thus UE 120 may repeatedly transmit the request to establish an RRC connection multiple times. UE 120 may perform a RACH procedure to access RACH resources for transmitting each RRC connection request to first base station 110-1. In some cases, the RACH procedure may fail, and thus UE 120 may repeat the RACH procedure multiple times.

In some aspects, UE 120 may apply one or more network configured parameters, such as an offset parameter (e.g., connEstFailOffset), based at least in part on one or more failures of the connection with the first cell. For example, UE 120 may apply the network configured offset parameter (e.g., applied to RSRP measurements and/or RSRQ measurements for the first cell) for a duration indicated by the network configured offset duration parameter (e.g., connEstFailOffsetValidity) based at least in part on the number of failures detected by UE 120 satisfying the network configured failure count parameter (e.g., connEstFailCount). In some aspects, UE 120 may determine not to perform cell reselection when parameters of the network configuration are applied. In this case, UE 120 may continue to attempt to connect to the first cell.

As further shown in fig. 3 and by reference numeral 315, UE 120 may detect a trigger associated with a failure to connect to a first cell associated with a first RAT. In some aspects, the trigger may be associated with: the number of connection failures detected by UE 120, and/or a duration associated with UE 120 connection with the first cell failure.

In some aspects, UE 120 may detect the trigger based at least in part on detecting that a timer (e.g., T300 timer) associated with the RRC connection request expires for at least a threshold number of repeated RRC connection requests transmitted by UE 120 to request an RRC connection with the first cell. For example, the trigger may be associated with a threshold number of consecutive repetitions of expiration of the T300 timer detected by UE 120 and/or a threshold number of expiration of the T300 timer detected by UE 120 within a particular duration. In some aspects, a failure count parameter of the network configuration (e.g., connEstFailCount) may indicate that a first number of times of the T300 timer expires, and the UE 120 may detect the trigger based at least in part on detecting the expiration of a second number of times of the T300 timer. In this case, the second number may be greater than the first number.

In some aspects, UE 120 may detect the triggered device based at least in part on detecting expiration of a first timer (e.g., a T310 timer) that initiates a connection re-establishment procedure followed by expiration of a second timer (e.g., a T300 timer) associated with an RRC connection request transmitted by the UE to request an RRC connection with a first cell associated with the first RAT. For example, UE 120 may detect a trigger in conjunction with expiration of a T310 timer followed by expiration of a T300 timer.

In some aspects, UE 120 may detect the trigger based at least in part on detecting repeated frequent RACH triggers and failures. For example, UE 120 may detect a trigger in connection with detecting at least a threshold number of RACH failures within a duration. Additionally or alternatively, UE 120 may detect a trigger in connection with detecting at least a threshold number of consecutive RACH failures.

In some cases, UE 120 may detect a trigger based at least in part on detecting a repetition-frequent RACH trigger, even in the case that some or all RACH procedures are successful. For example, a successful RACH trigger that is repeated frequently may be a result of the UE 120 being unable to transmit a Scheduling Request (SR) to the first base station 110-1 due to weak channel conditions, and the UE 120 synchronizing with the first base station 110-1 using RACH. In this case, UE 120 may detect a trigger in connection with detecting at least a threshold number of initiated RACH procedures within a duration.

In some aspects, UE 120 may detect the trigger based at least in part on detecting at least a threshold number of duplicate radio link failures on a first cell associated with the first RAT. For example, the trigger may be associated with a threshold number of radio link failures detected by UE 120 within a particular duration and/or a threshold number of consecutive radio link failures detected by UE 120.

In some aspects, UE 120 may detect the trigger based at least in part on detecting at least a threshold number of repeated out-of-service indications. For example, the trigger may be associated with detection by UE 120 of a threshold number of out-of-service indications within a particular duration and/or detection by UE 120 of a threshold number of consecutive out-of-service indications.

In some aspects, UE 120 may detect the trigger in combination with detecting any of a plurality of triggers associated with failure to connect to the first cell. For example, UE 120 may detect triggers in combination with detecting any of the triggers described above and/or any combination of the triggers described above.

As further shown in fig. 3 and indicated by reference numeral 320, UE 120 may adjust parameters of at least one network configuration related to connection failure and/or cell reselection in the first RAT based at least in part on detecting the trigger. In some aspects, UE 120 may adjust at least one network configured parameter to cause UE 120 to perform cell reselection and/or to cause UE 120 to select (e.g., move to) a second cell associated with a second RAT during cell reselection. In some aspects, UE 120 may adjust at least one network configured parameter to cause UE 120 to perform cell reselection and immediately select another cell (e.g., a second cell). In some aspects, UE 120 may adjust parameters of at least one network configuration to cause UE 120 to select another cell (e.g., a second cell) faster than by applying the parameters of the at least one network configuration. In some aspects, UE 120 may adjust at least one network configured parameter to cause UE 120 to determine that UE 120 is out of service with the first cell and select another cell (e.g., a second cell).

In some aspects, UE 120 may adjust an offset value of a network configuration associated with a failure to establish an RRC connection with the first cell, resulting in an adjusted offset value. For example, UE 120 may adjust an offset value (e.g., connEstFailOffset) of the network configuration indicated in SIB 1. UE 120 may increase the applied offset value as compared to the network configured offset value. In this case, UE 120 may apply the adjusted offset value (e.g., the increased offset value) to the power measurement (e.g., RSRP measurement) for the first cell and/or the quality measurement (e.g., RSRQ measurement) for the first cell instead of applying the network configured offset value. By applying the adjusted offset value (e.g., an increased offset value), the UE 120 may increase the de-prioritization of the associated first cell as compared to applying the network configured offset value.

As described above, UE 120 may apply the network configured offset value based at least in part on detecting a first number of failed connections to the first cell (e.g., expiration of the T300 timer a first number of times). For example, the first number of failures may be indicated by a network configured failure count parameter (e.g., connEstFailCount). In some aspects, UE 120 may adjust the offset value of the network configuration and apply the adjusted offset value in connection with detecting a trigger that may be associated with a second number of connection first cell failures (e.g., expiration of the T300 timer second number). In this case, the second number may be greater than the first number. Accordingly, UE 120 may initially reduce the RSRP measurement for the first cell and/or the RSRQ measurement for the first cell by an offset value of the network configuration based at least in part on (e.g., before detecting the trigger) the first number of failures to connect to the first cell. UE 120 may then decrease the RSRP measurement for the first cell and/or the RSRQ measurement for the first cell by an adjusted offset value (e.g., an increased offset value) based at least in part on detecting the trigger (e.g., detecting the second number of connection cell failures).

In some aspects, the adjusted offset value applied by UE 120 may be a fixed offset value configured for UE 120. For example, the fixed offset value may be configured for UE 120 by an Original Equipment Manufacturer (OEM) of UE 120, or set by a wireless communication standard, or the like. In some aspects, the fixed offset value may be determined based at least in part on system simulation and/or evaluation. In some aspects, the fixed offset value may be a value large enough to be blindly applied by UE 120 (e.g., without having to make measurements on current RSRP measurements or RSRQ measurements) to ensure that UE 120 will move out of the first cell.

In some aspects, UE 120 may dynamically determine the adjusted offset value based on current conditions in the first cell and/or cell reselection criteria associated with selecting a cell other than the first cell (e.g., the second cell). For example, UE 120 may dynamically determine an adjusted offset value (e.g., an increased offset value) based at least in part on RSRP measurements for the first cell, RSRQ measurements for the first cell, and/or SNR measurements for the first cell. In some applications, UE 120 may dynamically determine the adjusted offset value based at least in part on a comparison between the RSRP measurement and an RSRP threshold associated with selecting another cell (e.g., an NR to LTE (NR 2L) cell reselection RSRP threshold) and/or a comparison between the RSRQ measurement and an RSRQ threshold associated with selecting another cell (e.g., an NR2L cell reselection RSRQ threshold). For example, UE 120 may select an adjusted offset value that satisfies the RSRP threshold when applied to RSRP measurements and/or satisfies the RSRQ threshold when applied to RSRQ measurements.

In some aspects, UE 120 may determine an adjusted offset value (e.g., an increased offset value) using a trained machine learning model. In this case, UE 120 may input information to the trained machine learning model including one or more of: the RSRP measurement for the first cell, the RSRQ measurement for the first cell, and/or the SNR measurement for the first cell, and the trained machine learning model may determine the adjusted offset value based on the input information. In some aspects, the input information for the trained machine learning model may also include one or more thresholds associated with cell reselection (e.g., an NR2L cell reselection, RSRP, NR2L cell reselection, RSRQ, and/or other thresholds related to cell reselection). The trained machine learning model may be trained to learn a mapping between input information and adjusted offset values (and/or parameters of one or more other adjusted network configurations) to optimize offset values (and/or parameters of one or more other network configurations) for UE 120. For example, the trained machine learning model may be any type of machine learning model.

In some aspects, UE 120 may adjust the offset value of the network configuration by increasing the offset value of the network configuration by an amount based at least in part on the number of consecutive RACH failures. For example, once UE 120 detects a trigger, UE 120 may increase the network configured offset value by a greater amount with each successive RACH failure (e.g., until UE 120 switches to a different cell). In some aspects, UE 120 may be configured with a mapping that maps different numbers (or ranges of numbers) of RACH failures to different offset adjustments for UE 120 to apply. In some aspects, the RACH failure number may be included in input information to a trained machine learning model, and the trained machine learning model may determine an adjustment to the offset value based at least in part on the RACH failure number and based at least in part on other input information.

In some aspects, UE 120 may adjust a priority (e.g., reselection priority) of a network configuration of a first cell associated with a first RAT, and/or UE 120 may adjust a priority of a network configuration of a second cell associated with a second RAT. In some aspects, UE 120 may adjust the priority of the first cell and/or the priority of the second cell in conjunction with adjusting the offset parameters of the network configuration. In some aspects, UE 120 may adjust the priority of the first cell and/or the priority of the second cell instead of adjusting the offset parameters of the network configuration.

In some aspects, UE 120 may decrease the priority of the first cell associated with the first RAT. For example, UE 120 may decrease the priority (e.g., reselection priority) of the network configuration of the first cell indicated in SIB 2. Additionally and/or alternatively, UE 120 may increase the priority of the second cell associated with the second RAT. For example, UE 120 may increase the priority (e.g., reselection priority) of the network configuration of the second cell (and/or the particular carrier frequency of the second cell) indicated in SIB 5.

In some aspects, UE 120 may determine whether the priority of the network configuration of the first cell (e.g., NR cell) is greater than the priority of the network configuration of the second cell (e.g., LTE cell) after de-prioritization of the first cell (e.g., by applying an offset value or an adjusted offset value of the network configuration). In this case, UE 120 may skip consideration of lower priority cell candidates (such as the second cell). In some aspects, UE 120 may increase the priority of the second cell and/or decrease the priority of the first cell such that the first cell and the second cell have the same priority. In some aspects, UE 120 may increase the priority of the second cell and/or decrease the priority of the first cell such that the second cell has a greater priority than the first cell.

As further shown in fig. 3 and indicated by reference numeral 325, UE 120 may perform cell reselection based at least in part on adjusting the parameters of the at least one network configuration. For example, UE 120 may apply the adjusted offset, the adjusted priority of the first cell, and/or the adjusted priority of the second cell during cell reselection.

In some aspects, UE 120 may perform cell reselection measurements (e.g., RSRP and/or RSRQ measurements for the second cell) based at least in part on the at least one network configured parameter. For example, in some aspects, UE 120 may perform cell reselection measurements in conjunction with adjusting a priority of the first cell and/or a priority of the second cell such that the priority of the second cell is greater than the priority of the first cell. In some aspects, UE 120 may perform cell reselection measurements in conjunction with: determining that a cell selection reception (Rx) level value (Srxlev) resulting from applying the adjusted offset to RSRP measurements for the first cell meets (e.g., is less than or equal to) an RSRP threshold (e.g., s-non intra-search p) associated with performing the cell selection measurements, and determining that a cell selection quality value (square) resulting from applying the adjusted offset to RSRQ measurements for the first cell meets (e.g., is less than or equal to) an RSRQ threshold (e.g., s-non intra-search q) associated with performing the cell selection measurements.

In some aspects, UE 120 may select the second cell during cell reselection based at least in part on adjusting the parameters of the at least one network configuration. For example, UE 120 may determine Srxlev by applying an adjusted offset value to (e.g., subtracting an adjusted offset value from) an RSRP measurement for a first cell, and/or UE 120 may determine square by applying an adjusted offset parameter to (e.g., subtracting an adjusted offset value from) an RSRQ measurement for the first cell. UE 120 may perform cell reselection to a second cell associated with a second RAT in conjunction with: determining that Srxlev is less than an RSRP cell reselection threshold (e.g., threshServingLowP), and that the RSRP measurement for the second cell is greater than the RSRP cell reselection threshold; and/or determining that square is less than an RSRQ cell reselection threshold (e.g., threshServingLowQ), and that the RSRQ measurement for the second cell is greater than the RSRQ cell reselection threshold.

As further shown in fig. 3 and by reference numeral 330, UE 120 may be connected to a second cell associated with a second RAT. UE 120 may connect to the second cell based at least in part on the cell reselection performed in conjunction with adjusting the parameters of the at least one network configuration. Accordingly, UE 120 may connect to the second cell based at least in part on adjusting the parameters of the at least one network configuration. UE 120 may transmit an RRC connection request to second base station 110-2 to establish an RRC connection with a second cell associated with the second RAT (e.g., an RRC connection with second base station 110-2).

As described above in connection with fig. 3, UE120 may detect a trigger associated with a failure to connect to a first cell associated with a first RAT. UE120 may adjust parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger. UE120 may connect to a second cell associated with a second RAT based at least in part on adjusting the parameters of the at least one network configuration. In some aspects, the first RAT may be a 5G RAT, such as a 5G independent networking RAT; and the second RAT may be a 4G LTE RAT. As a result, UE120 may adjust parameters of the network configuration to de-prioritize the first cell to enable the UE to quickly perform cell reselection and reselect the second cell. This may reduce the duration of UE120 moving from a weaker cell (e.g., a weaker 5G cell) to a stronger cell (e.g., a strong 4G cell) compared to repeatedly applying parameters of the network configuration. Thus, UE120 may increase network speed and throughput and reduce the amount of time that the UE cannot transmit and/or receive data. Further, UE120 may reduce repetition of RACH procedure to attempt to establish a connection on a weak cell, resulting in reduced power consumption of UE 120.

As indicated above, fig. 3 is provided as an example. Other examples may differ from the example described with respect to fig. 3.

Fig. 4 is a diagram illustrating an example process 400 performed, for example, by a UE, in accordance with the present disclosure. Example process 400 is an example in which a UE (e.g., UE 120) performs operations associated with UE optimization for 5G independent networking connectivity and failure control.

As shown in fig. 4, in some aspects, the process 400 may include detecting a trigger associated with a failure to connect to a first cell associated with a first RAT (block 410). For example, the UE (e.g., using the detection component 508 depicted in fig. 5) may detect a trigger associated with a failure to connect to a first cell associated with a first RAT, as described above.

As further shown in fig. 4, in some aspects, the process 400 may include adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger (block 420). For example, the UE (e.g., using the adjustment component 510 depicted in fig. 5) may adjust parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger, as described above.

As further shown in fig. 4, in some aspects, the process 400 may include connecting to a second cell associated with a second RAT based at least in part on adjusting parameters of at least one network configuration (block 430). For example, the UE (e.g., using the connection component 510 depicted in fig. 5) may connect to a second cell associated with a second RAT based at least in part on adjusting parameters of at least one network configuration, as described above.

Process 400 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere herein.

In a first aspect, the first RAT is a 5G independent networking RAT and the second RAT is a 4G LTE RAT.

In a second aspect, alone or in combination with the first aspect, detecting the trigger comprises: a timer associated with the RRC connection request is detected to expire for at least a threshold number of repeated RRC connection requests transmitted by the UE to request an RRC connection with a first cell associated with the first RAT.

In a third aspect, alone or in combination with one or more of the first and second aspects, detecting the trigger comprises: a first timer expiration to initiate a connection re-establishment procedure is detected followed by a second timer expiration associated with an RRC connection request transmitted by the UE to request an RRC connection with a first cell associated with the first RAT.

In a fourth aspect, alone or in combination with one or more of the first to third aspects, detecting the trigger comprises: at least a threshold number of random access channel failures are detected over a duration.

In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, detecting the trigger comprises: detecting that at least a threshold number of times within a duration initiates a random access channel procedure.

In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, detecting the trigger comprises: at least a threshold number of random access channel failures are detected on a first cell associated with a first RAT.

In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, detecting the trigger comprises: at least a threshold number of duplicate out-of-service indications are detected.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, adjusting the parameters of the at least one network configuration comprises: an offset value of a network configuration associated with a failure to establish an RRC connection with the first cell is adjusted, resulting in an adjusted offset value.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the process 400 includes reducing at least one of the RSRP measurement for the first cell or the RSRQ measurement for the first cell by an offset value of the network configuration based at least in part on a first number of connection first cell failures, and reducing the at least one of the RSRP measurement for the first cell or the RSRQ measurement for the first cell by the adjusted offset value based at least in part on detecting the trigger, and the trigger is associated with a second number of connection first cell failures, the second number being greater than the first number.

In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the adjusted offset value is a fixed offset value configured for the UE.

In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, adjusting the offset value of the network configuration comprises: the method further includes determining an increased offset value compared to the network configured offset value based at least in part on at least one of an RSRP measurement for the first cell, an RSRQ measurement for the first cell, or an SNR measurement for the first cell, and reducing the RSRP measurement for the first cell by the increased offset value.

In a twelfth aspect, alone or in combination with the eleventh aspect, determining the increased offset value comprises: the increased offset value is determined using a trained machine learning model.

In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, adjusting the offset value of the network configuration comprises: the offset value of the network configuration is increased by an amount based at least in part on the number of successive random access channel failures.

In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, adjusting the parameters of the at least one network configuration comprises: the priority of a first cell associated with a first RAT is reduced.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, adjusting the parameters of the at least one network configuration further comprises: the priority of a second cell associated with a second RAT is increased.

In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, adjusting parameters of the at least one network configuration related to connection failure comprises: the first cell is excluded from a set of available cells with which to establish a radio resource control connection.

In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, adjusting the parameters of the at least one network configuration comprises: the method includes adjusting an offset value of a network configuration associated with a failure to establish an RRC connection with a first cell, and adjusting at least one of a priority of the first cell associated with a first RAT or a priority of a second cell associated with a second RAT.

While fig. 4 shows example blocks of the process 400, in some aspects, the process 400 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than depicted in fig. 4. Additionally or alternatively, two or more blocks of process 400 may be performed in parallel.

Fig. 5 is a block diagram of an example apparatus 500 for wireless communication according to the present disclosure. The apparatus 500 may be a UE, or the UE may include the apparatus 500. In some aspects, the apparatus 500 includes a receiving component 502 and a transmitting component 504 that can be in communication with each other (e.g., via one or more buses and/or one or more other components). As shown, apparatus 500 may use a receiving component 506 and a transmitting component 502 to communicate with another apparatus 504 (such as a UE, a base station, or another wireless communication device). As further shown, the device 500 can include one or more of a detection component 508, an adjustment component 510, or a connection component 512, among others.

In some aspects, the apparatus 500 may be configured to perform one or more operations described herein in connection with fig. 3. Additionally or alternatively, the apparatus 500 may be configured to perform one or more processes described herein (such as process 400 of fig. 4) or a combination thereof. In some aspects, the apparatus 500 and/or one or more components shown in fig. 5 may include one or more components of the UE described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 5 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executed by a controller or processor to perform the functions or operations of the component.

The receiving component 502 can receive a communication (such as a reference signal, control information, data communication, or a combination thereof) from a device 506. The receiving component 502 can provide the received communication to one or more other components of the apparatus 500. In some aspects, the receiving component 502 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation or decoding, etc.) on the received communication and can provide the processed signal to one or more other components of the apparatus 506. In some aspects, the receiving component 502 may include one or more antennas, demodulators, MIMO detectors, receive processors, controllers/processors, memories, or a combination thereof for the UE described above in connection with fig. 2.

The transmission component 504 can communicate (such as reference signals, control information, data communications, or a combination thereof) to the device 506. In some aspects, one or more other components of the apparatus 506 may generate communications and may provide the generated communications to the transmission component 504 for transmission to the apparatus 506. In some aspects, the transmission component 504 can perform signal processing (such as filtering, amplifying, modulating, digital-to-analog converting, multiplexing, interleaving, mapping, encoding, etc.) on the generated communication and can transmit the processed signal to the device 506. In some aspects, the transmission component 504 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memories, or combinations thereof of the UE described above in connection with fig. 2. In some aspects, the transmitting component 504 may be co-located with the receiving component 502 in a transceiver.

The detection component 508 can detect a trigger associated with a failure to connect to a first cell associated with a first RAT. The adjustment component 510 can adjust parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part upon detecting the trigger. The connection component 512 may connect to a second cell associated with a second RAT based at least in part on adjusting the parameters of the at least one network configuration.

The adjustment component 510 can reduce at least one of RSRP measurements for the first cell or RSRQ measurements for the first cell by an offset value of the network configuration based at least in part on the first number of failed connections to the first cell.

The adjustment component 510 can reduce the at least one of RSRP measurement for the first cell or RSRQ measurement for the first cell by the adjusted offset value based at least in part upon detecting the trigger, wherein the trigger is associated with a second number of failed connections to the first cell, and the second number is greater than the first number.

The number and arrangement of components shown in fig. 5 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 5. Further, two or more components shown in fig. 5 may be implemented within a single component, or a single component shown in fig. 5 may be implemented as multiple distributed components. Additionally or alternatively, a set of components (e.g., one or more components) shown in fig. 5 may perform one or more functions described as being performed by another set of components shown in fig. 5.

The following provides an overview of some aspects of the disclosure:

aspect 1: a method of performing wireless communications by a User Equipment (UE), comprising: detecting a trigger associated with a first cell failure associated with a first Radio Access Technology (RAT) connection; adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger; and connect to a second cell associated with a second RAT based at least in part on adjusting the parameter of the at least one network configuration.

Aspect 2: the method of aspect 1, wherein the first RAT is a 5G independent networking RAT and the second RAT is a 4G Long Term Evolution (LTE) RAT.

Aspect 3: the method of any of aspects 1-2, wherein detecting the trigger comprises: a timer associated with a Radio Resource Control (RRC) connection request is detected to expire for at least a threshold number of repeated RRC connection requests transmitted by the UE to request an RRC connection with a first cell associated with a first RAT.

Aspect 4: the method of any of aspects 1-3, wherein detecting the trigger comprises: a first timer expiration to initiate a connection re-establishment procedure is detected followed by a second timer expiration associated with a Radio Resource Control (RRC) connection request transmitted by the UE to request an RRC connection with a first cell associated with a first RAT.

Aspect 5: the method of any of aspects 1-4, wherein detecting the trigger comprises: at least a threshold number of random access channel failures are detected over a duration.

Aspect 6: the method of any of aspects 1-5, wherein detecting the trigger comprises: detecting that at least a threshold number of times within a duration initiates a random access channel procedure.

Aspect 7: the method of any of aspects 1-6, wherein detecting the trigger comprises: at least a threshold number of duplicate radio link failures are detected on a first cell associated with a first RAT.

Aspect 8: the method of any of aspects 1-7, wherein detecting the trigger comprises: at least a threshold number of duplicate out-of-service indications are detected.

Aspect 9: the method of any of aspects 1-8, wherein adjusting parameters of the at least one network configuration comprises: an offset value of a network configuration associated with a failure to establish an RRC connection with the first serving cell is adjusted, resulting in an adjusted offset value.

Aspect 10: the method of aspect 9, further comprising: reducing at least one of a Reference Signal Received Power (RSRP) measurement for the first cell or a Reference Signal Received Quality (RSRQ) measurement for the first cell by an offset value of the network configuration based at least in part on the first number of failed connections to the first cell; and reducing the at least one of RSRP for the first cell or RSRQ measurements for the first cell by the adjusted offset value based at least in part on detecting the trigger, wherein the trigger is associated with a second number of failed connections to the first cell, and the second number is greater than the first number.

Aspect 11: the method of aspect 9, wherein the adjusted offset value is a fixed offset value configured for the UE.

Aspect 12: the method of any of aspects 9-10, wherein adjusting the offset value of the network configuration comprises: determining an increased offset value as compared to the network configured offset value based at least in part on at least one of a Reference Signal Received Power (RSRP) measurement for the first cell, a Reference Signal Received Quality (RSRQ) measurement for the first cell, or a signal-to-noise ratio (SNR) measurement for the first cell; and reducing the RSRP measurement for the first cell by the increased offset value.

Aspect 13: the method of aspect 12, wherein determining the increased offset value comprises: the increased offset value is determined using a trained machine learning model.

Aspect 14: the method of any of aspects 9-13, wherein adjusting the offset value of the network configuration comprises: the offset value of the network configuration is increased by an amount based at least in part on the number of successive random access channel failures.

Aspect 15: the method of any of aspects 1-14, wherein adjusting parameters of the at least one network configuration comprises: the priority of a first cell associated with a first RAT is reduced.

Aspect 16: the method of aspect 15, wherein adjusting parameters of the at least one network configuration further comprises: the priority of the second cell associated with the second RAT is increased.

Aspect 17: the method of any of aspects 1-16, wherein adjusting parameters of the at least one network configuration related to connection failure comprises: the first cell is excluded from a set of available cells with which to establish a radio resource control connection.

Aspect 18: the method of any of aspects 1-17, wherein adjusting parameters of the at least one network configuration comprises: adjusting an offset value of a network configuration associated with a failure to establish an RRC connection with the first cell; and adjusting at least one of a priority of a first cell associated with the first RAT or a priority of a second cell associated with the second RAT.

Aspect 19: an apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of aspects 1-18.

Aspect 20: an apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of one or more of aspects 1-18.

Aspect 21: an apparatus for wireless communication, comprising at least one means for performing the method of one or more of aspects 1-18.

Aspect 22: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of aspects 1-18.

Aspect 23: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of aspects 1-18.

The foregoing disclosure provides insight and description, but is not intended to be exhaustive or to limit aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.

As used herein, the term "component" is intended to be broadly interpreted as hardware and/or a combination of hardware and software. "software" should be construed broadly to mean instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, etc., whether described in software, firmware, middleware, microcode, hardware description language, or other terminology. As used herein, a processor is implemented in hardware, and/or a combination of hardware and software. It will be apparent that the systems and/or methods described herein may be implemented in different forms of hardware, and/or combinations of hardware and software. The actual specialized control hardware or software code used to implement the systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods were described herein without reference to the specific software code-it being understood that software and hardware can be designed to implement the systems and/or methods based at least in part on the description herein.

As used herein, satisfying a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than or equal to a threshold, not equal to a threshold, etc., depending on the context.

Although specific combinations of features are recited in the claims and/or disclosed in the specification, such combinations are not intended to limit the disclosure of the various aspects. Indeed, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each of the dependent claims listed below may depend directly on only one claim, disclosure of various aspects includes each dependent claim in combination with each other claim of the set of claims. As used herein, a phrase referring to a list of items "at least one of" refers to any combination of these items, including individual members. As an example, "at least one of a, b, or c" is intended to encompass: a. b, c, a-b, a-c, b-c, and a-b-c, as well as any combination having multiple identical elements (e.g., a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b-b, b-b-c, c-c, and c-c-c, or any other ordering of a, b, and c).

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Moreover, as used herein, the articles "a" and "an" are intended to include one or more items, and may be used interchangeably with "one or more". Furthermore, as used herein, the article "the" is intended to include one or more items referenced in conjunction with the article "the" and may be used interchangeably with "one or more". Furthermore, as used herein, the terms "set (collection)" and "group" are intended to include one or more items (e.g., related items, non-related items, or a combination of related and non-related items), and may be used interchangeably with "one or more. Where only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, the terms "having," "containing," "including," and the like are intended to be open ended terms. Furthermore, the phrase "based on" is intended to mean "based, at least in part, on" unless explicitly stated otherwise. Also, as used herein, the term "or" when used in a sequence is intended to be inclusive and may be used interchangeably with "and/or" unless otherwise specifically stated (e.g., where used in conjunction with "any one of" or "only one of").

Claims

1. A method of performing wireless communications by a User Equipment (UE), comprising:

detecting a trigger associated with a first cell failure associated with a first Radio Access Technology (RAT) connection;

adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger; and

the method further includes connecting to a second cell associated with a second RAT based at least in part on adjusting the parameters of the at least one network configuration.

2. The method of claim 1, wherein the first RAT is a 5G independent networking RAT and the second RAT is a 4G Long Term Evolution (LTE) RAT.

3. The method of claim 1, wherein detecting the trigger comprises:

a timer associated with a Radio Resource Control (RRC) connection request is detected to expire for at least a threshold number of repeated RRC connection requests transmitted by the UE to request an RRC connection with the first cell associated with the first RAT.

4. The method of claim 1, wherein detecting the trigger comprises:

a first timer expiration to initiate a connection re-establishment procedure is detected followed by a second timer expiration associated with a Radio Resource Control (RRC) connection request transmitted by the UE to request a RRC connection with the first cell associated with the first RAT.

5. The method of claim 1, wherein detecting the trigger comprises:

at least a threshold number of random access channel failures are detected over a duration.

6. The method of claim 1, wherein detecting the trigger comprises:

detecting that at least a threshold number of times within a duration initiates a random access channel procedure.

7. The method of claim 1, wherein detecting the trigger comprises:

at least a threshold number of duplicate radio link failures are detected on the first cell associated with the first RAT.

8. The method of claim 1, wherein detecting the trigger comprises:

at least a threshold number of duplicate out-of-service indications are detected.

9. The method of claim 1, wherein adjusting parameters of the at least one network configuration comprises:

an offset value of a network configuration associated with a failure to establish an RRC connection with the first cell is adjusted, resulting in an adjusted offset value.

10. The method of claim 9, further comprising:

reducing at least one of a Reference Signal Received Power (RSRP) measurement for the first cell or a Reference Signal Received Quality (RSRQ) measurement for the first cell by an offset value of the network configuration based at least in part on a first number of failures to connect the first cell; and

The adjusted offset value is reduced by the at least one of the RSRP measurement for the first cell or the RSRQ measurement for the first cell based at least in part on detecting the trigger, wherein the trigger is associated with a second number of failed connections to the first cell and the second number is greater than the first number.

11. The method of claim 9, wherein the adjusted offset value is a fixed offset value configured for the UE.

12. The method of claim 9, wherein adjusting the offset value of the network configuration comprises:

determining an increased offset value as compared to the network configured offset value based at least in part on at least one of a Reference Signal Received Power (RSRP) measurement for the first cell, a Reference Signal Received Quality (RSRQ) measurement for the first cell, or a signal-to-noise ratio (SNR) measurement for the first cell; and

the RSRP measurement for the first cell is reduced by the increased offset value.

13. The method of claim 12, wherein determining the increased offset value comprises:

the increased offset value is determined using a trained machine learning model.

14. The method of claim 9, wherein adjusting the offset value of the network configuration comprises:

the offset value of the network configuration is increased by an amount based at least in part on the number of successive random access channel failures.

15. The method of claim 1, wherein adjusting parameters of the at least one network configuration comprises:

the first cell associated with the first RAT is de-prioritized.

16. The method of claim 15, wherein adjusting parameters of the at least one network configuration further comprises:

the priority of the second cell associated with the second RAT is increased.

17. The method of claim 1, wherein adjusting parameters of the at least one network configuration related to connection failure comprises:

the first cell is excluded from a set of available cells with which to establish a radio resource control connection.

18. The method of claim 1, wherein adjusting parameters of the at least one network configuration comprises:

adjusting an offset value of a network configuration associated with a failure to establish an RRC connection with the first cell; and

at least one of a priority of the first cell associated with the first RAT or a priority of the second cell associated with the second RAT is adjusted.

19. A User Equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory, the one or more processors configured to:

adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT in connection with detecting the trigger; and

in conjunction with adjusting the parameters of the at least one network configuration, connect to a second cell associated with a second RAT.

20. The UE of claim 19, wherein the first RAT is a 5G independent networking RAT and the second RAT is a 4G Long Term Evolution (LTE) RAT.

21. The UE of claim 19, wherein to adjust the parameters of the at least one network configuration, the one or more processors are configured to:

22. The UE of claim 21, wherein the one or more processors are further configured to:

23. The UE of claim 21, wherein the adjusted offset value is a fixed offset value configured for the UE.

24. The UE of claim 21, wherein to adjust the offset value of the network configuration, the one or more processors are configured to:

25. The UE of claim 24, wherein to determine the increased offset value, the one or more processors are configured to:

26. The UE of claim 21, wherein to adjust the offset value of the network configuration, the one or more processors are configured to:

27. The UE of claim 19, wherein to adjust the parameters of the at least one network configuration, the one or more processors are configured to:

the first cell associated with the first RAT is de-prioritized.

28. The UE of claim 27, wherein to adjust the parameters of the at least one network configuration, the one or more processors are further configured to:

the priority of the second cell associated with the second RAT is increased.

29. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:

One or more instructions that, when executed by one or more processors of a User Equipment (UE), cause the UE to:

30. An apparatus for wireless communication, comprising:

means for detecting a trigger associated with a first cell failure associated with a first Radio Access Technology (RAT) connection;

means for adjusting parameters of at least one network configuration related to connection failure or cell reselection in the first RAT based at least in part on detecting the trigger; and

means for connecting to a second cell associated with a second RAT based at least in part on adjusting the parameters of the at least one network configuration.