Handling multiple universal user module (MUSIM) band conflicts for UEs in telecommunications network

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide for handling multiple universal user module (MUSIM) band conflicts for UEs in a telecommunications network. The method includes determining, by a user equipment (UE) (101), an occurrence of a band conflict or an elimination of a band conflict for MUSIM operation between a first network (107) and a second network (109) associated with the UE. Further, a first network or a second network for transmitting the MUSIM assistance information is selected based on the network characteristics. Thereafter, a signaling message is transmitted to the selected network to indicate the occurrence or elimination of the band conflict. Further, an RRC reconfiguration message is received from the network device. The RRC reconfiguration message includes a setting or deletion or modification of a band list or band combination list for resolving or eliminating band conflicts. Further, transmit or receive operations are performed simultaneously with the first network and the second network without encountering band collisions between the first network and the second network.

Description

Technical Field

[0001] The presented embodiments relate to fifth generation (5G) wireless communications. More particularly, the present disclosure relates to handling Multiple Universal Subscriber Module (MUSIM) band conflicts for UEs in a telecommunications network. Background Art

[0002] 5G mobile communications technology defines a wide frequency band, enabling high transmission rates and new services. This technology can be implemented not only in frequency bands below 6 GHz, such as 3.5 GHz, but also in frequency bands above 6 GHz, known as millimeter waves (including 28 GHz and 39 GHz). Furthermore, consideration is being given to implementing 6G mobile communications technology in terahertz frequency bands (e.g., the 95 GHz to 3 THz band) (referred to as "super 5G systems") to achieve transmission rates fifty times faster than 5G mobile communications technology and ultra-low latency that is one-tenth that of 5G mobile communications technology.

[0003] At the beginning of the development of 5G mobile communication technology, in order to support services and meet the performance requirements of enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications (URLLC) and massive machine-type communications (mMTC), standardization has been carried out on the following technologies: beamforming and massive MIMO for reducing radio wave path loss and increasing radio wave transmission distance in millimeter waves; supporting parameters for dynamic operation of efficient utilization of millimeter wave resources and time slot formats (for example, operation of multiple subcarrier spacings); initial access technology for supporting multi-beam transmission and wide frequency bands; definition and operation of BWP (bandwidth part); new channel coding methods such as LDPC (low-density parity-check) codes for large-scale data transmission and polar codes for highly reliable transmission of control information; L2 preprocessing; and network slicing for providing dedicated networks dedicated to specific services.

[0004] Currently, with respect to services supported by 5G mobile communication technology, the industry is continuously discussing improvements and performance enhancements to initial 5G mobile communication technology, and has completed physical layer standardization for technologies such as: V2X (Vehicle-to-Everything) for assisting driving decisions based on information transmitted by vehicles regarding their location and status and for improving user convenience; NR-U (New Radio Unlicensed) for system operation in compliance with various regulatory requirements in unlicensed frequency bands; NR UE) energy saving; Non-Terrestrial Network (NTN) for UE-satellite direct communication for securing coverage in areas where communication with terrestrial networks is not possible; and positioning.

[0005] In addition, the standardization of air interface architecture / protocols for technologies such as the Industrial Internet of Things (IIoT) to support new services through interoperability and integration with other industries; IAB (Integrated Access and Backhaul) to provide nodes for network service area expansion by supporting wireless backhaul links and access links in an integrated manner; mobility enhancements including conditional handover and DAPS (Dual Active Protocol Stack) handover; and two-step random access (two-step RACH for NR) to simplify the random access process. Simultaneously, the standardization of system architecture / services for technologies such as the 5G baseline architecture (e.g., service-based architecture or service-based interface) for combining network function virtualization (NFV) and software-defined networking (SDN) technologies; and mobile edge computing (MEC) for receiving services based on UE location are also progressing.

[0006] With the commercialization of 5G mobile communication systems, an exponentially increasing number of connected devices will be connected to communication networks, and it is expected that enhanced functionality and performance of 5G mobile communication systems and the integrated operation of connected devices will be required. To this end, new research is being put on the agenda regarding the following technologies: extended reality (XR) for efficient support of AR (augmented reality), VR (virtual reality), mixed reality (MR), etc.; 5G performance improvements and complexity reduction through the use of artificial intelligence (AI) and machine learning (ML); AI service support; metaverse service support; and drone communications.

[0007] Furthermore, such developments in 5G mobile communication systems will lay the foundation not only for the development of new waveforms for providing coverage in the terahertz band of 6G mobile communication technology; multi-antenna transmission technologies such as full-dimensional MIMO (FD-MIMO), array antennas, and massive antennas; metamaterial-based lenses and antennas for improving coverage of terahertz band signals; high-dimensional spatial multiplexing technologies using OAM (orbital angular momentum); and RIS (reconfigurable smart surfaces), but will also lay the foundation for the development of full-duplex technologies for improving the frequency efficiency of 6G mobile communication technology and improving system networks; AI-based communication technologies for achieving system optimization from the design stage by leveraging satellites and AI (artificial intelligence) and internalizing end-to-end AI support functions; and next-generation distributed computing technologies for implementing services at a level of complexity that exceeds the limits of UE operating capabilities by utilizing ultra-high-performance communication and computing resources. Summary of the Invention

[0008] Technical issues

[0009] A primary purpose of the embodiments herein is to provide a method for handling MUSIM band conflicts for a UE in a telecommunication network.

[0010] Another object of the present invention is to enhance the performance of a user equipment by avoiding interference between two connections.

[0011] Another object of the present invention is to achieve effective coordination between UE and network equipment to eliminate frequency band conflicts.

[0012] Solution to the problem

[0013] In one aspect, the foregoing object is achieved by providing a method for handling a multi-universal subscriber module (MUSIM) frequency band conflict by a UE in a telecommunications network. The method includes: determining, by a user equipment (UE), the occurrence of a frequency band conflict for MUSIM operation or the resolution of a frequency band conflict between a first network and a second network associated with the UE. Furthermore, the method includes: selecting, by the UE, the first network or the second network for transmitting MUSIM assistance information based on network characteristics. The network characteristics include at least one of: a capability to support 5G New Radio (NR), a capability to support carrier aggregation, or dual connectivity, a network determined to be a victim of the frequency band conflict, and a network affected by the frequency band conflict. Thereafter, the method includes: transmitting, by the UE, a signaling message to the selected network to indicate the occurrence of the frequency band conflict or the resolution of the frequency band conflict. The signaling message includes at least one of: a UE assistance information message, a UE capability message, an RRC resume request message, an RRC resume complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the method includes: receiving, by the UE, an RRC reconfiguration message from a network device. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving or eliminating frequency band conflicts. Furthermore, the method includes: simultaneously performing, by the UE, at least one of transmitting or receiving operations with the first network and the second network without encountering a frequency band conflict between the first network and the second network.

[0014] In an embodiment, a method for determining the occurrence of a frequency band conflict or the elimination of a frequency band conflict for MUSIM operation includes determining, by the UE, a possible performance change of the UE based on at least one measurement report, an interference level, a block error rate, and quality of service. The performance change includes a degradation of UE performance or an improvement of UE performance. Furthermore, the method includes determining, by the UE, a performance change of the UE based on the at least one measurement report, the interference level, the block error rate, and quality of service, wherein the performance change includes a degradation of UE performance or an improvement of UE performance. Furthermore, the method includes determining the occurrence of a frequency band conflict or the elimination of a frequency band conflict when determining the performance change.

[0015] In an embodiment, the UE assistance information message includes MUSIM assistance information.

[0016] In an embodiment, the MUSIM assistance information includes at least one of: temporary capability restriction on a frequency band list or a frequency band combination list, or removal of capability restriction on a frequency band list or a frequency band combination list associated with a selected network, configuration or reconfiguration preference, handover, redirection, release of a serving cell, release of a secondary serving cell (SCell) or a secondary cell group (SCG), activation of an SCell or SCG, deactivation of an SCell or SCG, and a reason for a frequency band conflict.

[0017] In an embodiment, a method for transmitting MUSIM assistance information to a selected network associated with a UE to indicate the occurrence of a frequency band conflict or the resolution of a frequency band conflict includes: the UE receiving an OtherConfig information element (IE) in an RRC reconfiguration message, the IE providing an instruction to transmit the MUSIM assistance information. The OtherConfig includes at least one of a MUSIM capability limitation configuration, an inhibit timer, a candidate band list or band combination list, an explicit or implicit indication that band conflict reporting is permitted, and a reason for initiating the band conflict report. Furthermore, the method includes: based on the candidate band list or band combination list provided in the OtherConfig message and when the inhibit timer is not running, transmitting, by the UE, the MUSIM assistance information to the selected network associated with the UE to indicate the occurrence of a frequency band conflict or the resolution of a frequency band conflict. Furthermore, the method includes: upon initiating the transmission of the MUSIM assistance information (e.g., in a UE assistance information message), starting the inhibit timer by the UE.

[0018] In an embodiment, the prohibit timer is at least one of: not included in the RRC reconfiguration message to allow immediate reporting of the occurrence of frequency band conflicts or the elimination of frequency band conflicts; or included in the RRC reconfiguration message to limit frequent reporting of the occurrence of frequency band conflicts or the elimination of frequency band conflicts.

[0019] In an embodiment, the temporary capability restriction for a frequency band list or a frequency band combination list includes at least one of an avoided frequency band list or an avoided frequency band combination list, and includes at least one of an affected frequency band list or an affected frequency band combination list of restricted MUSIM capabilities, wherein each element of the frequency band list or the frequency band combination list is represented by an index of a corresponding frequency band or frequency band combination in a candidate frequency band list or a frequency band combination list configured in OtherConFig.

[0020] In an embodiment, the method includes: when the UE is configured to provide MUSIM assistance information for temporary capability restriction, determining, by the UE, one of the following: whether the UE has a temporary capability restriction for band conflict or band conflict resolution, and the UE has not transmitted a UE assistance information message since the UE was configured to provide MUSIM assistance information for temporary capability restriction; or whether at least one of a current avoided band list or an avoided band combination list and at least one of a current affected band list or an affected band combination list are different from the lists indicated by the last transmission of a UE assistance information message to provide MUSIM assistance information, and an inhibit timer is not running. Furthermore, the method includes: transmitting, by the UE, MUSIM assistance information including the avoided band list or the avoided band combination list and the affected band list or the affected band combination list. Furthermore, the method includes: starting, by the UE, an inhibit timer when initiating transmission of a UE assistance information message to provide MUSIM assistance information.

[0021] In an embodiment, the method includes receiving, by a UE, an indication in at least one System Information Block (SIB) from a first network or a second network, that a temporary capability restriction report including a MUSIM band conflict is supported. Furthermore, the method includes transmitting, by the UE, an indication of the occurrence of the temporary capability restriction in at least one of an RRC Resume Complete message or an RRC Setup Complete message during connection establishment with at least one of the first network and the second network. The indication is provided as a single bit value.

[0022] In an embodiment, the method includes releasing the MUSIM capability restriction configuration and stopping the prohibit timer during reestablishment of connection between the UE and at least one of the first network or the second network.

[0023] In an embodiment, the method includes releasing a MUSIM capability restriction configuration (if stored) from a UE inactive access stratum (AS) context and stopping an inhibit timer while resuming an RRC connection of the RRC-inactive UE with at least one of the first network and the second network.

[0024] Therefore, embodiments herein provide a method for handling a Multi-Universal Subscriber Identity Module (MUSIM) band conflict by a first network or a second network associated with a UE in a telecommunications network. The method includes: transmitting, by the first network or the second network, an OtherConfig message within an RRC reconfiguration message, the message providing an instruction to transmit MUSIM assistance information. The OtherConfig message includes at least one of the following: a MUSIM capability restriction configuration, a prohibition timer, a candidate band list or a band combination list, an explicit or implicit indication that band conflict reporting is permitted, and a reason for initiating the band conflict report. Furthermore, the method includes: receiving, by the selected network, a signaling message indicating the occurrence or resolution of a band conflict. The signaling message includes at least one of the following: a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. Thereafter, the method includes: transmitting, by the selected network, an RRC reconfiguration message. The RRC reconfiguration message includes the setting, deletion, or modification of a band list or a band combination list used to resolve or eliminate the band conflict. Furthermore, the method includes performing at least one of a transmission or a reception operation by the first network or the second network and the UE simultaneously without encountering a frequency band conflict between the first network and the second network.

[0025] In an embodiment, the UE assistance information message includes MUSIM assistance information.

[0026] In an embodiment, the MUSIM assistance information includes at least one of: temporary capability restriction on a band list or a band combination list, or removal of capability restriction on a band list or a band combination list associated with a selected network, configuration or reconfiguration preference, handover, redirection, release of a serving cell, release of an SCell or SCG, activation of an SCell or SCG, deactivation of an SCell or SCG, and a reason for a band conflict.

[0027] In an embodiment, a method for receiving MUSIM assistance information from a UE to indicate the occurrence of a frequency band conflict or the elimination of a frequency band includes: transmitting, by a first network or a second network, an OtherConfig information element (IE) in an RRC reconfiguration message, the IE providing an instruction to transmit the MUSIM assistance information. The OtherConfig includes at least one of: a MUSIM capability limitation configuration, an inhibit timer, a candidate frequency band list or a frequency band combination list, an explicit or implicit indication that a frequency band conflict report is permitted, and a reason for initiating the frequency band conflict report. Furthermore, the method includes: receiving, by a selected network, MUSIM assistance information from the UE to indicate the occurrence of a frequency band conflict or the elimination of a frequency band, based on the OtherConfig message and when the inhibit timer is not running.

[0028] In an embodiment, the prohibit timer is at least one of: not included in the RRC reconfiguration message to allow immediate reporting of the occurrence of frequency band conflicts or the elimination of frequency band conflicts; or included in the RRC reconfiguration message to limit frequent reporting of the occurrence of frequency band conflicts or the elimination of frequency band conflicts.

[0029] In an embodiment, the method includes: transmitting, by the first network or the second network, an indication of support for temporary capability restriction reporting including MUSIM band conflicts in at least one system information block (SIB). Furthermore, the method includes: receiving, by the first network or the second network, an indication of occurrence of MUSIM assistance information in at least one of an RRC recovery complete message or an RRC setup complete message during connection establishment with the UE, wherein the indication is provided as a single bit value.

[0030] Therefore, embodiments herein provide a user equipment (UE) for handling a Multi-Universal Subscriber Identity Module (MUSIM) frequency band conflict in a telecommunications network. The UE includes a processor and a communication management controller connected to the processor. The communication management controller is configured to determine the occurrence of a frequency band conflict or the resolution of a frequency band conflict between a first network and a second network associated with the UE. Furthermore, the communication management controller is configured to select the first network or the second network for transmitting MUSIM assistance information based on network characteristics. The network characteristics include at least one of: a capability to support NR, a capability to support carrier aggregation (e.g., a secondary serving cell (SCell)), dual connectivity (e.g., a secondary cell group (SCG)), a network identified as a victim of the frequency band conflict, and a network affected by the frequency band conflict. The communication management controller is then configured to transmit a signaling message to the selected network indicating the occurrence of the frequency band conflict or the resolution of the frequency band conflict, wherein the signaling message includes at least one of: a UE assistance information message, a UE capability message, an RRC resume request message, an RRC resume complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the communication management controller is configured to receive an RRC reconfiguration message from the network device. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list. Furthermore, the communication management controller is configured to simultaneously perform at least one of a transmission or a reception operation with the first network and the second network without encountering a frequency band conflict between the first network and the second network.

[0031] Therefore, embodiments herein provide a first or second network for handling a Multi-Universal Subscriber Identity Module (MUSIM) band conflict by a first or second network associated with a UE in a telecommunications network. The first or second network includes a processor and a communications management controller connected to the processor. The communications management controller is configured to transmit an OtherConfig message within an RRC reconfiguration message, the message providing an instruction to transmit MUSIM assistance information. The OtherConfig message includes at least one of the following: a MUSIM capability restriction configuration, a prohibition timer, a candidate band list or a band combination list, an explicit or implicit indication that band conflict reporting is permitted, and a reason for initiating the band conflict report. Furthermore, the communications management controller is configured to receive a signaling message indicating the occurrence or resolution of a band conflict. The signaling message includes at least one of the following: a UE assistance information message, a UE capability message, an RRC resume request message, an RRC resume complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the communications management controller is configured to transmit the RRC reconfiguration message. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving or eliminating frequency band conflicts. Furthermore, the communication management controller is configured to simultaneously perform at least one of a transmission or a reception operation with the UE without encountering a frequency band conflict between the first network and the second network.

[0032] These and other aspects of the embodiments herein will be better appreciated and understood in conjunction with the following description and accompanying drawings. However, it should be understood that the following description is given by way of illustration and not limitation, although exemplary embodiments and many specific details thereof are indicated. Many changes and modifications may be made within the scope of the embodiments herein.

[0033] Advantageous Effects of the Invention

[0034] Those skilled in the art will appreciate the advantages and salient features of the present invention from the following detailed description, which, taken in conjunction with the accompanying drawings, discloses exemplary embodiments of the present invention. To achieve a more enhanced communication system, a method and network for generating a waveform with a low peak-to-average power ratio using phase continuity is needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] These and other features, aspects, and advantages of the present embodiment are illustrated in the accompanying drawings, wherein like reference numerals indicate corresponding parts throughout the drawings. The embodiments of the present invention will be better understood from the following description with reference to the accompanying drawings, wherein: Figure 1 A system architecture for handling MUSIM band conflicts in a telecommunications network according to embodiments disclosed herein is shown; Figure 2Ais a block diagram illustrating a UE for handling MUSIM band conflicts in a telecommunications network according to embodiments disclosed herein; Figure 2B is a block diagram illustrating a network device for handling MUSIM frequency band conflicts in a telecommunications network according to embodiments disclosed herein; Figure 3 is a flow chart illustrating a method for handling MUSIM band conflicts at a UE in a telecommunications network according to embodiments disclosed herein; Figure 4 is a flow chart illustrating a method for handling MUSIM frequency band conflicts at the network side in a telecommunication network according to an embodiment disclosed herein.

[0036] It will be noted that, to the extent possible, identical reference numerals have been used to denote identical elements in the figures. Furthermore, one of ordinary skill in the art will appreciate that the elements in the figures are illustrated for simplicity and may not necessarily be drawn to scale. For example, the dimensions of some elements in the figures may be exaggerated relative to other elements to help enhance understanding of various aspects of the present invention. Furthermore, elements may have been represented in the figures using conventional symbols, and the figures may only show specific details relevant to understanding the embodiments of the present invention, so as not to obscure the figures from details readily apparent to one of ordinary skill in the art having the benefit of the description herein. DETAILED DESCRIPTION

[0037] These and other aspects of the exemplary embodiments herein will be better appreciated and understood when considered in conjunction with the following description and accompanying drawings. However, it should be understood that the following description is given by way of illustration and not limitation, although indicating exemplary embodiments and many of their specific details. Many changes and modifications may be made within the scope of the exemplary embodiments herein without departing from the spirit thereof, and the exemplary embodiments herein include all such modifications.

[0038] The embodiments of this invention and their various features and advantageous details are explained more fully with reference to the non-limiting embodiments shown in the accompanying drawings and described in detail in the following description. Descriptions of well-known components and processing technologies are omitted so as not to unnecessarily obscure the embodiments of this invention. The examples used herein are merely to facilitate understanding of the manner in which the embodiments of this invention may be practiced and to further enable those skilled in the art to practice the embodiments of this invention. Therefore, these examples should not be construed as limiting the scope of the embodiments of this invention.

[0039] For purposes of interpreting this specification, the definitions (as defined herein) will apply, and where appropriate, terms used in the singular will also include the plural, and vice versa. It should be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. Unless otherwise indicated, the terms "including," "having," and "comprising" should be interpreted as open-ended terms.

[0040] The words / phrases "exemplary," "example," "illustrative," "in an instance," "such as," "by analogy," "etc," "for example," "i.e.," are used herein merely to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the subject matter described herein using the words / phrases "exemplary," "example," "illustrative," "in an instance," "such as," "by analogy," "etc," "for example," "i.e.," is not necessarily to be construed as preferred or advantageous over other embodiments.

[0041] The various embodiments may be described and illustrated in terms of blocks that perform one or more of the described functions. These blocks, which may be referred to herein as managers, units, modules, hardware components, etc., are physically implemented by analog and / or digital circuitry (such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hard-wired circuitry, etc.) and may optionally be driven by firmware. For example, the circuitry may be embodied in one or more semiconductor chips or on a substrate support such as a printed circuit board. The circuitry comprising the blocks may be implemented by dedicated hardware, or by a processor (e.g., one or more programmed microprocessors and associated circuitry), or by a combination of dedicated hardware for performing some of the functions of the blocks and processors and a processor for performing other functions of the blocks. Each block of an embodiment may be physically separated into two or more interacting discrete blocks without departing from the scope of the present disclosure. Similarly, the blocks of an embodiment may be physically combined into more complex blocks without departing from the scope of the present disclosure.

[0042] It should be noted that the elements in the accompanying drawings are shown for purposes of this description and ease of understanding and may not necessarily be drawn to scale. For example, a flow chart / sequence diagram illustrates a method in terms of the steps required to understand aspects of the embodiments disclosed herein. Furthermore, with respect to the construction of an apparatus, one or more components of the apparatus may have been represented in the accompanying drawings by conventional symbols, and the accompanying drawings may show only those specific details that are relevant to understanding the embodiments, so as not to obscure the drawings with details that would be readily understood by a person of ordinary skill in the art having the benefit of the description herein. Furthermore, with respect to a system, one or more components / modules comprising the system may have been represented in the accompanying drawings by conventional symbols, and the accompanying drawings may show only those specific details that are relevant to understanding the embodiments, so as not to obscure the drawings with details that would be readily understood by a person of ordinary skill in the art having the benefit of the description herein.

[0043] The accompanying drawings are used to facilitate easy understanding of various technical features, and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. Therefore, the present disclosure should be interpreted as extending to any modifications, equivalents, and alternatives other than those specifically listed in the accompanying drawings and corresponding descriptions. The use of words such as first, second, third, etc. to describe components / elements / steps is for the purpose of this description and should not be interpreted as being ordered / placed / appearing in a sequential order unless otherwise specified.

[0044] A MUSIM device stores more than one Subscriber Identity Module (SIM) to facilitate connectivity with two or more different networks (NWs). For example, a MUSIM device can utilize different data plans for different user profiles (e.g., home and office). Furthermore, a MUSIM device improves connectivity and reliability through multiple connections. One or more of the multiple SIMs can participate in paging, system information block (SIB) acquisition, measurements, data or voice calls, multicast and broadcast service (MBS) reception, emergency calls, access stratum (AS) signaling, non-access stratum (NAS) signaling, and more. Some of these operations, such as paging and measurements, are periodic, while others, such as signaling, are aperiodic and / or indeterminate. Furthermore, the duration required to complete an operation can also be fixed or unpredictable.

[0045] MUSIM devices can come in different types, depending on the number of Rx (receive) and Tx (transmit) chains, such as single Rx-single Tx, dual Rx-single Tx, dual Tx-single Rx, dual Rx-dual Tx, and multiple Rx-multiple Tx. The Rx or Tx chain includes the RF circuitry and associated hardware and software components for reception and transmission, respectively. Dual Rx-dual Tx devices can typically support simultaneous radio resource control (RRC) connections across their multiple users. These devices are sometimes also referred to as dual-stack dual access (DSDA) devices. Single Rx-single Tx, dual Rx-single Tx, and dual Tx-single Rx devices can also support multiple simultaneous RRC connections by sharing their Rx and Tx chains and switching them as needed.

[0046] A potential issue with MUSIM devices is frequency band conflicts when operating one or more SIM cards. For example, when two SIM cards are operating together, frequency band conflicts can arise for a variety of reasons. One reason could be that the frequency band used by the first SIM card is a harmonic (multiple) of the frequency band used by the second SIM card, causing interference, for example, during reception on the first SIM card. Another reason could be that when there is simultaneous transmission on the second SIM card, strong interference could be perceived during reception on the first SIM card. Another reason could be that the UE implementation is designed to share radio frequency (RF) hardware components on the frequency bands used by both SIM cards, which could limit usage or degrade performance when both SIM cards operate simultaneously on these frequency bands. Frequency band conflicts can occur between the two SIM cards in the RRC Connected-RRC Connected, RRC Idle / RRC Inactive-RRC Connected, RRC Connected-RRC Idle / RRC Inactive, or RRC Idle / RRC Inactive-RRC Idle / RRC Inactive states.

[0047] Therefore, it is desirable to address the above-mentioned shortcomings or other deficiencies or at least provide a useful alternative to overcome the frequency band conflict problem in MUSIM devices.

[0048] In one aspect, the foregoing objectives are achieved by providing a method for handling a Multi-Universal Subscriber Module (MUSIM) frequency band conflict by a UE in a telecommunications network. The method includes determining, by a user equipment (UE), the occurrence of a frequency band conflict for MUSIM operation or the resolution of a frequency band conflict between a first network and a second network associated with the UE. Furthermore, the method includes selecting, by the UE, the first network or the second network for transmitting MUSIM assistance information based on network characteristics. The network characteristics include at least one of: a capability to support 5G New Radio (NR), a capability to support carrier aggregation, or dual connectivity, a network determined to be a victim of the frequency band conflict, and a network affected by the frequency band conflict. Thereafter, the method includes transmitting, by the UE, a signaling message to the selected network indicating the occurrence of the frequency band conflict or the resolution of the frequency band conflict. The signaling message includes at least one of: a UE assistance information message, a UE capability message, an RRC resume request message, an RRC resume complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the method includes receiving, by the UE, an RRC reconfiguration message from a network device. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving or eliminating frequency band conflicts. Furthermore, the method includes: simultaneously performing, by the UE, at least one of transmitting or receiving operations with the first network and the second network without encountering a frequency band conflict between the first network and the second network.

[0049] In an embodiment, a method for determining the occurrence or elimination of a frequency band conflict for MUSIM operation includes determining, by the UE, a likelihood of a performance change of the UE based on at least one measurement report, an interference level, a block error rate, and quality of service. The performance change includes a degradation or improvement in UE performance. Furthermore, the method includes determining, by the UE, a performance change of the UE based on the at least one measurement report, the interference level, the block error rate, and quality of service, wherein the performance change includes a degradation or improvement in UE performance. Furthermore, the method includes determining the occurrence or elimination of a frequency band conflict when a performance change is determined.

[0050] In an embodiment, the UE assistance information message includes MUSIM assistance information.

[0051] In an embodiment, the MUSIM assistance information includes at least one of: temporary capability restriction on a frequency band list or a frequency band combination list, or removal of capability restriction on a frequency band list or a frequency band combination list associated with a selected network, configuration or reconfiguration preference, handover, redirection, release of a serving cell, release of a secondary serving cell (SCell) or a secondary cell group (SCG), activation of an SCell or SCG, deactivation of an SCell or SCG, and a reason for a frequency band conflict.

[0052] In an embodiment, a method for transmitting MUSIM assistance information to a selected network associated with a UE to indicate the occurrence or resolution of a frequency band conflict includes: the UE receiving an OtherConfig information element (IE) in an RRC reconfiguration message, the IE providing an instruction to transmit the MUSIM assistance information. The OtherConfig includes at least one of a MUSIM capability limitation configuration, an inhibit timer, a candidate band list or band combination list, an explicit or implicit indication that band conflict reporting is permitted, and a reason for initiating the band conflict report. Furthermore, the method includes: based on the candidate band list or band combination list provided in the OtherConfig message and when the inhibit timer is not running, transmitting, by the UE, the MUSIM assistance information to the selected network associated with the UE to indicate the occurrence or resolution of a frequency band conflict. Furthermore, the method includes: starting, by the UE, the inhibit timer when initiating the transmission of the MUSIM assistance information (e.g., in a UE assistance information message).

[0053] In an embodiment, the prohibit timer is at least one of: not included in the RRC reconfiguration message to allow immediate reporting of the occurrence of frequency band conflicts or the elimination of frequency band conflicts; or included in the RRC reconfiguration message to limit frequent reporting of the occurrence of frequency band conflicts or the elimination of frequency band conflicts.

[0054] In an embodiment, the temporary capability restriction for a frequency band list or a frequency band combination list includes at least one of an avoided frequency band list or an avoided frequency band combination list, and at least one of an affected frequency band list or an affected frequency band combination list including restricted MUSIM capabilities, wherein each element of the frequency band list or the frequency band combination list is represented by an index of a corresponding frequency band or frequency band combination in a candidate frequency band list or a frequency band combination list configured in OtherConFig.

[0055] In an embodiment, the method includes: when the UE is configured to provide MUSIM assistance information for temporary capability restriction, determining, by the UE, one of the following: whether the UE has a temporary capability restriction for band conflict or band conflict resolution, and the UE has not transmitted a UE assistance information message since the UE was configured to provide MUSIM assistance information for temporary capability restriction; or whether at least one of a current avoided band list or an avoided band combination list and at least one of a current affected band list or an affected band combination list is different from a list indicated by a last transmission of a UE assistance information message to provide MUSIM assistance information, and an inhibit timer is not running. Furthermore, the method includes: transmitting, by the UE, MUSIM assistance information including the avoided band list or the avoided band combination list and the affected band list or the affected band combination list. Furthermore, the method includes: starting, by the UE, an inhibit timer when initiating transmission of a UE assistance information message to provide MUSIM assistance information.

[0056] In an embodiment, the method includes receiving, by a UE, an indication in at least one System Information Block (SIB) from a first network or a second network, that a temporary capability restriction report including a MUSIM band conflict is supported. Furthermore, the method includes transmitting, by the UE, an indication of the occurrence of the temporary capability restriction in at least one of an RRC Resume Complete message or an RRC Setup Complete message during connection establishment with at least one of the first network and the second network. The provided indication is a single bit value.

[0057] In an embodiment, the method includes releasing the MUSIM capability restriction configuration and stopping the prohibit timer during re-establishment of connection between the UE and at least one of the first network or the second network.

[0058] In an embodiment, the method includes releasing a MUSIM capability restriction configuration (if stored) from a UE inactive access stratum (AS) context and stopping an inhibit timer while resuming an RRC connection of the RRC-inactive UE with at least one of the first network and the second network.

[0059] Therefore, embodiments herein provide a method for handling a Multi-Universal Subscriber Identity Module (MUSIM) band conflict by a first network or a second network associated with a UE in a telecommunications network. The method includes: transmitting, by the first network or the second network, an OtherConfig message within an RRC reconfiguration message, the message providing an instruction to transmit MUSIM assistance information. The OtherConfig message includes at least one of the following: a MUSIM capability restriction configuration, a prohibition timer, a candidate band list or a band combination list, an explicit or implicit indication that band conflict reporting is permitted, and a reason for initiating the band conflict report. Furthermore, the method includes: receiving, by the selected network, a signaling message indicating the occurrence or resolution of a band conflict. The signaling message includes at least one of the following: a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. Thereafter, the method includes: transmitting, by the selected network, an RRC reconfiguration message. The RRC reconfiguration message includes the setting, deletion, or modification of a band list or a band combination list used to resolve or eliminate the band conflict. Furthermore, the method includes performing at least one of a transmission or a reception operation by the first network or the second network and the UE simultaneously without encountering a frequency band conflict between the first network and the second network.

[0060] In an embodiment, the UE assistance information message includes MUSIM assistance information.

[0061] In an embodiment, the MUSIM assistance information includes at least one of: temporary capability restriction on a band list or a band combination list, or removal of capability restriction on a band list or a band combination list associated with a selected network, configuration or reconfiguration preference, handover, redirection, release of a serving cell, release of an SCell or SCG, activation of an SCell or SCG, deactivation of an SCell or SCG, and a reason for a band conflict.

[0062] In an embodiment, a method for receiving MUSIM assistance information from a UE to indicate the occurrence of a frequency band conflict or the elimination of a frequency band includes: transmitting, by a first network or a second network, an OtherConfig information element (IE) in an RRC reconfiguration message, the IE providing an instruction to transmit the MUSIM assistance information. The OtherConfig includes at least one of: a MUSIM capability limitation configuration, an inhibit timer, a candidate frequency band list or a frequency band combination list, an explicit or implicit indication that a frequency band conflict report is permitted, and a reason for initiating the frequency band conflict report. Furthermore, the method includes: receiving, by a selected network, MUSIM assistance information from the UE to indicate the occurrence of a frequency band conflict or the elimination of a frequency band, based on the OtherConfig message and when the inhibit timer is not running.

[0063] In an embodiment, the prohibit timer is at least one of: not included in the RRC reconfiguration message to allow immediate reporting of the occurrence of frequency band conflicts or the elimination of frequency band conflicts; or included in the RRC reconfiguration message to limit frequent reporting of the occurrence of frequency band conflicts or the elimination of frequency band conflicts.

[0064] In an embodiment, the method includes: transmitting, by the first network or the second network, an indication of support for temporary capability restriction reporting including MUSIM band conflicts in at least one system information block (SIB). Furthermore, the method includes: receiving, by the first network or the second network, an indication of occurrence of MUSIM assistance information in at least one of an RRC recovery complete message or an RRC setup complete message during connection establishment with the UE, wherein the indication is provided as a single bit value.

[0065] Therefore, embodiments herein provide a user equipment (UE) for handling a Multi-Universal Subscriber Identity Module (MUSIM) frequency band conflict in a telecommunications network. The UE includes a processor and a communication management controller connected to the processor. The communication management controller is configured to determine the occurrence of a frequency band conflict or the resolution of a frequency band conflict between a first network and a second network associated with the UE. Furthermore, the communication management controller is configured to select the first network or the second network for transmitting MUSIM assistance information based on network characteristics. The network characteristics include at least one of: a capability to support NR, a capability to support carrier aggregation (e.g., a secondary serving cell (SCell)), dual connectivity (e.g., a secondary cell group (SCG)), a network identified as a victim of the frequency band conflict, and a network affected by the frequency band conflict. The communication management controller is then configured to transmit a signaling message to the selected network indicating the occurrence of the frequency band conflict or the resolution of the frequency band conflict, wherein the signaling message includes at least one of: a UE assistance information message, a UE capability message, an RRC resume request message, an RRC resume complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the communication management controller is configured to receive an RRC reconfiguration message from the network device. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list. Furthermore, the communication management controller is configured to simultaneously perform at least one of a transmission or a reception operation with the first network and the second network without encountering a frequency band conflict between the first network and the second network.

[0066] Therefore, embodiments herein provide a first or second network for handling a Multi-Universal Subscriber Identity Module (MUSIM) band conflict by a first or second network associated with a UE in a telecommunications network. The first or second network includes a processor and a communications management controller connected to the processor. The communications management controller is configured to transmit an OtherConfig message within an RRC reconfiguration message, the message providing an instruction to transmit MUSIM assistance information. The OtherConfig message includes at least one of the following: a MUSIM capability restriction configuration, a prohibition timer, a candidate band list or a band combination list, an explicit or implicit indication that band conflict reporting is permitted, and a reason for initiating the band conflict report. Furthermore, the communications management controller is configured to receive a signaling message indicating the occurrence or resolution of a band conflict. The signaling message includes at least one of the following: a UE assistance information message, a UE capability message, an RRC resume request message, an RRC resume complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the communications management controller is configured to transmit the RRC reconfiguration message. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving or eliminating frequency band conflicts. Furthermore, the communication management controller is configured to simultaneously perform at least one of a transmission or a reception operation with the UE without encountering a frequency band conflict between the first network and the second network.

[0067] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and accompanying drawings. However, it should be understood that the following description, which shows the preferred embodiment and its many specific details, is given by way of illustration and not limitation. Many changes and modifications may be made within the scope of the embodiments herein.

[0068] The embodiments of the present invention and their various features and advantageous details are explained more fully with reference to the non-limiting embodiments shown in the accompanying drawings and described in detail in the description below. Descriptions of well-known components and processing technologies are omitted so as not to unnecessarily obscure the embodiments of the present invention. In addition, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments. The term "or" used herein refers to non-exclusive, or unless otherwise specified. The examples used herein are merely to facilitate understanding of the ways in which the embodiments of the present invention can be practiced, and further enable those skilled in the art to practice the embodiments of the present invention. Therefore, these examples are not to be interpreted as limiting the scope of the embodiments of the present invention.

[0069] As is conventional in the art, the various embodiments are described and illustrated in terms of blocks that perform one or more of the described functions. These blocks, referred to herein as managers, units, modules, hardware components, and the like, are physically implemented by analog and / or digital circuitry (such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hard-wired circuitry, and the like), and are optionally driven by firmware and software. For example, the circuitry is embodied in one or more semiconductor chips or on a substrate support such as a printed circuit board. The circuitry comprising the blocks is implemented by dedicated hardware, or by a processor (e.g., one or more programmed microprocessors and associated circuitry), or by a combination of dedicated hardware for performing some of the functions of the blocks and processors and a processor for performing other functions of the blocks. Without departing from the scope of the proposed method, each block of the embodiments may be physically separated into two or more discrete, interacting blocks. Similarly, without departing from the scope of the proposed method, the blocks of the embodiments may be physically combined into more complex blocks.

[0070] The accompanying drawings are used to help easily understand various technical features, and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. Therefore, the proposed method should be interpreted as extending to any changes, equivalents and substitutes other than those specifically listed in the accompanying drawings. Although the terms "first", "second" and the like are used to describe various elements in this article, these elements are not limited by these terms. These terms are generally used to distinguish one element from another.

[0071] Therefore, embodiments disclose a method for handling a MUSIM band conflict by a UE in a telecommunications network. The method includes: determining, by the UE, the occurrence of a band conflict or the resolution of a band conflict between a first network and a second network associated with the UE. Furthermore, the method includes: selecting, by the UE, the first network or the second network for transmitting MUSIM assistance information based on network characteristics. The network characteristics include at least one of: a capability to support NR, a capability to support carrier aggregation, dual connectivity, a network determined to be a victim of a band conflict, and a network affected by the band conflict. Thereafter, the method includes: transmitting, by the UE, a signaling message to the selected network to indicate the occurrence of a band conflict or the resolution of a band conflict. The signaling message includes at least one of: a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the method includes: receiving, by the UE, an RRC reconfiguration message from a network device. The RRC reconfiguration message includes setting, deleting, or modifying a band list or a band combination list used to resolve or resolve the band conflict. Furthermore, the method includes performing, by the UE, at least one of a transmission or a reception operation with the first network and the second network simultaneously without encountering a frequency band conflict between the first network and the second network.

[0072] Therefore, these embodiments disclose a method for handling a Multi-Universal Subscriber Identity Module (MUSIM) band conflict by a first network or a second network associated with a UE in a telecommunications network. The method includes: transmitting, by the first network or the second network, an OtherConfig message within an RRC reconfiguration message, the message providing an instruction to transmit MUSIM assistance information. The OtherConfig message includes at least one of: a MUSIM capability restriction configuration, an inhibit timer, a candidate band list or a band combination list, an explicit or implicit indication that band conflict reporting is permitted, and a reason for initiating the band conflict report. Furthermore, the method includes: receiving, by the selected network, a signaling message indicating the occurrence of a band conflict or the resolution of a band conflict. The signaling message includes at least one of: a UE assistance information message, a UE capability message, an RRC resume request message, an RRC resume complete message, an RRC connection request message, and an RRC setup complete message. Thereafter, the method includes: transmitting, by the selected network, an RRC reconfiguration message. The RRC reconfiguration message includes the setting, deletion, or modification of a band list or a band combination list used to resolve or eliminate the band conflict. Furthermore, the method includes performing at least one of a transmission or a reception operation by the first network or the second network and the UE simultaneously without encountering a frequency band conflict between the first network and the second network.

[0073] Therefore, embodiments disclose a UE for handling a MUSIM band conflict by a UE in a telecommunications network. The UE includes a processor and a communication management controller connected to the processor. The communication management controller is configured to determine the occurrence of a band conflict or the resolution of a band conflict between a first network and a second network associated with the UE. Furthermore, the communication management controller is configured to select a first network or a second network for transmitting MUSIM assistance information based on network characteristics. The network characteristics include at least one of: a capability to support NR, a capability to support carrier aggregation, dual connectivity, a network determined to be a victim of a band conflict, and a network affected by the band conflict. Thereafter, the communication management controller is configured to transmit a signaling message to the selected network to indicate the occurrence of a band conflict or the resolution of a band conflict, wherein the signaling message includes at least one of: a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the communication management controller is configured to receive an RRC reconfiguration message from a network device. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving or eliminating frequency band conflicts. Furthermore, the communication management controller is configured to simultaneously perform at least one of a transmission or reception operation with the first network and the second network without encountering a frequency band conflict between the first network and the second network.

[0074] Therefore, embodiments disclose a first or second network for handling a MUSIM band conflict by a first or second network associated with a UE in a telecommunications network. The first or second network includes a processor and a communication management controller connected to the processor. The communication management controller is configured to transmit an OtherConfig message in an RRC reconfiguration message, the message providing an instruction to transmit MUSIM assistance information, wherein the OtherConfig message includes at least one of the following: a MUSIM capability limitation configuration, an inhibit timer, a candidate band list or a band combination list, an explicit or implicit indication that band conflict reporting is permitted, and a reason for initiating the band conflict report. Furthermore, the communication management controller is configured to receive a signaling message indicating the occurrence of a band conflict or the resolution of a band conflict. The signaling message includes at least one of the following: a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. Furthermore, the communication management controller is configured to transmit an RRC reconfiguration message. The RRC reconfiguration message includes the setting, deletion, or modification of a band list or a band combination list used to resolve or eliminate the band conflict. Furthermore, the communication management controller is configured to simultaneously perform at least one of a transmission or a reception operation with the UE without encountering a frequency band conflict between the first network and the second network.

[0075] In the current situation, in a MUSIM device, when two SIM cards are operating together, the frequency band (also called band) used by the first SIM card can interact with certain frequency bands that may overlap with those used by the second SIM card. This overlapping frequency band can lead to frequency band conflicts. Furthermore, if the frequency band used by the first SIM card is a harmonic of the frequency band used by the second SIM card, this can cause frequency band conflicts. The occurrence of frequency band conflicts can lead to decreased signal quality, dropped calls, reduced data speeds, and decreased network performance.

[0076] The proposed solution provides a method for configuring a UE to perform simultaneous transmit / receive operations without encountering frequency band conflicts. In the proposed solution, the UE indicates the occurrence or resolution of a frequency band conflict to the network through a signaling mechanism. Furthermore, the network associated with the UE can reallocate an alternative frequency band to avoid the occurrence of a frequency band conflict. Furthermore, the network associated with the UE indicates a timer for transmitting an indication of the occurrence or resolution of a frequency band conflict.

[0077] Figure 1 FIG. 4 shows a system architecture for handling MUSIM frequency band conflicts in a telecommunications network according to an embodiment disclosed herein. Figure 1As shown, the system architecture includes a user equipment (101), which includes a first SIM card (103) and a second SIM card (105), a first network (107) associated with the first SIM card (103), and a second network (109) associated with the second SIM card (109). The UE (101) can be an end user device that connects to the first network (107) and the second network (109) to access network services. For example, the UE (101) can include but is not limited to a mobile phone, a smartphone, a tablet, a laptop, a television, a connected car, and an Internet of Things (IoT) device. The first SIM card (103) and the second SIM card (105) are small cards inserted into the UE (101) to identify and authenticate the user on the mobile network. In some embodiments, the first SIM card (103) and the second SIM card (109) can be embedded SIM cards (eSIMs) that are integrated into the UE (101) and cannot be physically removed. The first SIM card (103) and the second SIM card (105) can securely store an International Mobile Subscriber Identity (IMSI), a unique identifier associated with the UE (101), and keys for authenticating and encrypting communications on the first network (107) or the second network (109). Each of the first SIM card (103) and the second SIM card (105) can be associated with the first network (107) and the second network (109), respectively. For example, each of the first SIM card (103) and the second SIM card (105) can operate using a different network operator. In some embodiments, each of the first SIM card (103) and the second SIM card (105) can operate using the same network operator.

[0078] A UE (101) determines the occurrence of a frequency band conflict or the elimination of a frequency band conflict between a first network (107) and a second network (109) associated with a first SIM card (103) and a second SIM card (105) of the UE (101). Upon the determination, the UE (101) selects at least one of the first network (107) or the second network (109) to transmit MUSIM assistance information. The selection is performed based on network characteristics of at least one of the first network (107) or the second network (109). In addition, the UE (101) transmits a signaling message to the selected network to indicate the occurrence of a frequency band conflict or the elimination of a frequency band conflict. The selected network may be one of the first network (107) or the second network (109). The signaling message may include, but is not limited to, a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. In addition, the selected network transmits an RRC reconfiguration message to resolve the frequency band conflict or eliminate the frequency band conflict based on the received MUSIM assistance information. The RRC reconfiguration message includes at least one of setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving or eliminating a frequency band conflict. Thereafter, the UE (101) simultaneously performs at least one of a transmission or a reception operation with the first network (107) and the second network (109) without encountering a frequency band conflict between the first network (107) and the second network (109).

[0079] Figure 2A The present invention is a block diagram illustrating a user equipment for handling MUSIM frequency band conflicts in a telecommunications network according to an embodiment disclosed herein. The user equipment (UE) (101) includes a processor (201), a memory (203), an I / O interface (207), and a communication management controller (205). The UE (101) may be an end user device connected to a communication network to access services. For example, the UE (101) may include, but is not limited to, a mobile phone, a smartphone, a tablet, a laptop, an Internet of Things (IoT) device. The UE (101) includes two SIM cards, the two SIM cards including a first SIM card (103) and a second SIM card (105). In addition, the processor (201) of the UE (101) communicates with the memory (203), the I / O interface (207), and the communication management controller (205). The processor (201) is configured to execute instructions stored in the memory (203) and perform various processes. The processor (201) may include one or more processors, which may be general-purpose processors, such as a central processing unit (CPU), an application processor (AP), etc.; pure graphics processing units, such as a graphics processing unit (GPU), a vision processing unit (VPU); and / or artificial intelligence (AI) dedicated processors, such as a neural processing unit (NPU).

[0080] In addition, the memory (203) of the UE (101) includes a storage location addressable by the processor (201). The memory (203) is not limited to volatile memory and / or non-volatile memory. In addition, the memory 203 may include one or more computer-readable storage media. The memory (203) may include a non-volatile storage element. For example, the non-volatile storage element may include a magnetic hard disk, an optical disk, a floppy disk, a flash memory, or an electrically programmable memory (EPROM) or an electrically erasable and programmable (EEPROM) memory. The memory (203) may store media streams such as audio streams, video streams, tactile feedback, etc. In addition, the memory (203) of the UE (101) may store a number of information received from at least one of the first network (107) and the second network (109). For example, the memory may store a number of information such as OtherConfig information, RRC reconfiguration information, etc.

[0081] The I / O interface (207) transmits information between the memory (203) and an external peripheral device. The peripheral device is an input / output device associated with the UE (101). The I / O interface (207) receives a number of information from a first network (107) and a second network (109) associated with the first SIM card (103) and the second SIM card (105), respectively. The number of information received from the first network (107) and the second network (109) may include, but is not limited to, other configuration (otherConfig) information and radio resource control (RRC) reconfiguration information.

[0082] The communication management controller (205) communicates with the I / O interface (205) and the memory (207) for handling MUSIM band conflicts in a telecommunications network. The communication management controller (205) is an innovative hardware implemented by physical implementation of both analog and digital circuits (including logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive and active electronic components, and optical components). The communication management controller (205) of the UE (101) determines the occurrence of a band conflict or the elimination of a band conflict between a first network (107) and a second network (109) associated with the UE (101). The communication management controller (205) determines the occurrence of a band conflict or the elimination of a band conflict based on a performance change of the UE (101). The performance change is determined based on at least one of a measurement report received from at least one of the first network (107) or the second network (109), an interference level, a block error rate, and a quality of service. Specifically, when the performance of the UE (101) degrades, it is determined that a band conflict has occurred. In addition, when the performance of the UE (101) is improved, it is determined that the frequency band conflict is eliminated. When determining, the UE (101) selects at least one of the first network (107) or the second network (109) based on network characteristics to transmit MUSIM assistance information. The network characteristics may include, but are not limited to: the ability to support NR, the ability to support carrier aggregation, dual connectivity, a network determined to be a victim of the frequency band conflict, and a network affected by the frequency band conflict. In addition, the UE (101) transmits a signaling message to the selected network to indicate the occurrence of the frequency band conflict or the elimination of the frequency band conflict. The selected network may be the first network (107) or the second network (109). The signaling message may include, but is not limited to, a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. The MUSIM assistance information includes at least one of the following: temporary capability restriction of a frequency band list or a frequency band combination list, or removal of capability restriction of a frequency band list or a frequency band combination list associated with the selected network, configuration or reconfiguration preference, handover, redirection, release of a serving cell, release of an SCell or SCG, activation of an SCell or SCG, deactivation of an SCell or SCG, and a reason for a frequency band conflict. Thereafter, the communication management controller (205) receives an RRC reconfiguration message from the selected network (107 / 109). The RRC reconfiguration message may include, but is not limited to, setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving a frequency band conflict or eliminating a frequency band conflict. In addition, the communication management controller (205) performs transmission or reception with the first network (107) and the second network (109) simultaneously without encountering a frequency band conflict between the first network (107) and the second network (109).

[0083] In an embodiment, the UE (101) may determine at least one of a potential collision problem that may occur or a frequency band collision that has occurred.

[0084] In an embodiment, when a first SIM card (103) is in an RRC connected state and a second SIM card (105) is transitioning from one of an RRC idle state or an RRC inactive state to an RRC connected state, the UE (101) determines that a frequency band conflict has occurred. During or after the transition from one of the RRC idle state or the RRC inactive state to the RRC connected state, the second SIM card (105) may be configured, received, or transmitted on a downlink and / or uplink frequency band that conflicts with the downlink and / or uplink frequency band of the first SIM card (103). Furthermore, in an alternative description of this scenario, the first SIM card (103) and the second SIM card (105) may be interchanged or swapped.

[0085] In an embodiment, when a first SIM card (103) is in one of the RRC idle / RRC inactive / RRC connected states and a second SIM card (105) is in one of the RRC idle or RRC inactive states and performs cell selection / cell reselection, the occurrence of a frequency band conflict is determined by the UE (101). During the cell selection / cell reselection, the second SIM card (105) may reside on a frequency band that conflicts with a downlink and / or uplink frequency band of the first SIM card (103). In an alternative description of the scenario, the first SIM card (103) and the second SIM card (105) are interchanged or swapped.

[0086] In another embodiment, when the first SIM card (103) is in an RRC connected state and the second SIM card (105) is in an RRC connected state and the second SIM card (105) is performing mobility (i.e., handover), the occurrence of a frequency band conflict is determined by the UE (101). The second SIM card (105) may be handed over to a cell having a downlink and / or uplink frequency band that may conflict with the downlink and / or uplink frequency band of the first SIM card (103). In addition, in an alternative description of this scenario, the first SIM card (103) and the second SIM card (105) may be interchanged or swapped.

[0087] In yet another embodiment, the occurrence of a frequency band conflict is determined by the UE (101) when the first SIM card (103) is in an RRC connected state and the second SIM card (105) is in an RRC connected state and the second SIM card (105) is configured / reconfigured for a carrier aggregation configuration or a dual connectivity configuration or a measurement configuration of a frequency / frequency band or is activated for a carrier or cell. The configuration / reconfiguration or activation operation of the second SIM card (105) may involve a downlink and / or uplink frequency band that may conflict with the downlink and / or uplink frequency band of the first SIM card (103). Furthermore, in an alternative description of this scenario, the first SIM card (103) and the second SIM card (105) are interchanged or swapped.

[0088] Furthermore, when the first SIM card (103) is in an RRC connected state and the second SIM card (105) is transitioning from the RRC connected state to one of the RRC idle or RRC inactive states, the UE (101) determines that the frequency band conflict is resolved. During the transition from the RRC connected state to one of the RRC idle or RRC inactive states, or after the transition to the RRC idle and RRC inactive states, the second SIM card (105) may release the downlink / uplink frequency band and / or stop receiving and / or stop transmitting on the downlink and / or uplink frequency band that conflicts with the downlink and / or uplink frequency band of the first SIM card (103). Furthermore, in an alternative description of this scenario, the first SIM card (103) and the second SIM card (105) are interchanged or swapped.

[0089] In an embodiment, when the first SIM card (103) is in one of the RRC idle / RRC inactive / RRC connected states and the second SIM card (105) is in one of the RRC idle or RRC inactive states and performs cell selection / cell reselection, the UE (101) determines that a frequency band conflict has been resolved. During the cell selection / cell reselection, the second SIM card (105) can reside on a frequency band that no longer conflicts with the downlink and / or uplink frequency band of the first SIM card (103). In an alternative description of this scenario, the first SIM card (103) and the second SIM card (105) are interchanged or swapped.

[0090] In another embodiment, when the first SIM card (103) is in an RRC connected state and the second SIM card (105) is in an RRC connected state and the second SIM card (105) is performing mobility (i.e., handover), the UE (101) determines that a frequency band conflict has been resolved. The second SIM card (105) may be handed over to a cell having a downlink and / or uplink frequency band that may no longer conflict with the downlink and / or uplink frequency band of the first SIM card (103). In an alternative description of this scenario, the first SIM card (103) and the second SIM card (105) are interchanged or swapped.

[0091] In yet another embodiment, when the first SIM card (103) is in an RRC connected state and the second SIM card (105) is in an RRC connected state and the second SIM card (105) is configured / reconfigured / released for a carrier aggregation configuration or a dual connectivity configuration or a measurement configuration of a frequency / frequency band or is deactivated for a carrier or cell, the UE (101) determines elimination of the frequency band conflict. The configuration / reconfiguration / release or deactivation operation of the second SIM card (105) may involve removing the downlink and / or uplink frequency band that conflicts with the downlink and / or uplink frequency band of the first SIM card (103). Furthermore, in an alternative description of this scenario, the first SIM card (103) and the second SIM card (105) are interchanged or swapped.

[0092] In some embodiments, the occurrence of a frequency band conflict or the elimination of a frequency band conflict is determined based on a performance change of the UE (101). The performance change may include one of a performance degradation or a performance improvement. Specifically, when the performance degrades, the UE (101) determines the occurrence of a frequency band conflict. Similarly, when the performance improves, the UE (101) determines the elimination of the frequency band conflict. The performance change may be measured by decoding of data, measurement of a signal, interference level, block error rate, quality of service, or quality of experience.

[0093] In an embodiment, when the MUSIM UE determines that one of the above scenarios may occur, or at least one of the performance changes (e.g., decoding of data, measurement of signals, interference level, block error rate, quality of service, or quality of experience) occurs, the MUSIM UE triggers signaling for MUSIM band conflict (or resolution of band conflict) to at least one network associated with the corresponding SIM card.

[0094] In an embodiment, triggers, scenarios and / or thresholds for performance changes for MUSIM band conflicts or signaling to resolve band conflicts are at least one of configured by the first network (107) or the second network (109), determined by the UE (101) itself (e.g., by UE implementation), or specified by a standard.

[0095] In an embodiment, a UE (101) triggers a signaling message to at least one of a first network (107) associated with a first SIM (103) and a second network (109) associated with a second SIM (105) to indicate occurrence of a frequency band conflict or elimination of a frequency band conflict. For example, the signaling message may be at least one of a radio resource configuration (RRC) signaling message and a medium access control (MAC) signaling message. In addition, the signaling message includes at least one of the following: a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message.

[0096] In an embodiment, a signaling message (e.g., a UE assistance information message) from a UE (101) to a first network (107) associated with a first SIM card (103) includes an indication / information that a frequency band conflict has occurred (or that a frequency band conflict has been resolved) with a second network (109) associated with a second SIM card (105), and the signaling message may be encoded to carry at least one or a combination of the following: a) A list of non-conflicting downlink and / or uplink frequency bands or frequency band combinations of one of the first networks (107) associated with the first SIM card (103). That is, an updated list of frequency bands from which conflicts have been removed is constructed and sent to the network. For example, the IE NonConflictBandCombinationList contains a list of non-conflicting NR CA, NR non-CA and / or MR-DC frequency band combinations (including also DL-only or UL-only frequency bands). This is an exhaustive list. The message structure of the UE assistance information containing the list of non-conflicting frequency band combinations is as follows:

[0097] b) a list of conflicting downlink and / or uplink frequency bands or frequency band combinations of one of the first networks (107) associated with the first SIM card (103). The frequency band list is an updated frequency band list indicating the occurrence of frequency band conflicts. For example, the IE ConflictBandCombinationList contains a list of NR CA, NR non-CA and / or MR-DC frequency band combinations (also including DL-only or UL-only frequency bands) that conflict for MUSIM. The message structure of the UE assistance information containing the list of conflicting frequency band combinations is as follows:

[0098] c) A list of downlink and / or uplink frequency bands or frequency band combinations of the second network (109) associated with the second SIM card (105). That is, all frequency bands or frequency band combination information of the second SIM card (105) is indicated to the network associated with the first SIM card (103). For example, the IE OtherSIMBandCombinationList contains a list of NR CA, NR non-CA and / or MR-DC frequency band combinations (also including DL-only or UL-only frequency bands) configured for another SIM card. The message structure for UE assistance information containing a list of all frequency bands or frequency band combinations is as follows:

[0099] d) a list of downlink and / or uplink frequency bands or frequency band combinations for a second network (109) associated with the second SIM card (105), which frequency bands or frequency band combinations conflict or may conflict with the network associated with the first SIM card (103).

[0100] e) A list of non-conflicting downlink and / or uplink frequency bands or frequency band combinations for the first network (107) associated with the first SIM card (103) is prepared for an existing or latest UE configuration (e.g., RRC reconfiguration) received by the UE (101) on the first network (107) associated with the first SIM card (103). This helps to reduce signaling overhead since only incremental information needs to be communicated. For example, the IE ConfNonConflictBandCombinationList contains a list of NR CA, NR non-CA, and / or MR-DC frequency band combinations (also including DL-only or UL-only bands) that are non-conflicting for the MUSIM. The message structure for the UE assistance information containing the list of configured non-conflicting frequency band combinations is as follows:

[0101] f) A list of conflicting downlink and / or uplink frequency bands or frequency band combinations for a first network (107) associated with a first SIM card (103) is prepared for an existing or latest UE configuration (e.g., RRC reconfiguration) received by the UE (101) on the first network (107) associated with the first SIM card (103). This helps reduce signaling overhead since only incremental information needs to be communicated. The IE ConfConflictBandCombinationList includes a list of NR CA, NR non-CA, and / or MR-DC frequency band combinations (also including DL-only or UL-only bands) that were configured for the UE in the RRC reconfiguration and that conflict for MUSIM. The message structure for the UE assistance information containing the list of configured conflicting frequency band combinations is as follows:

[0102] g) a list of non-conflicting downlink and / or uplink frequency bands or frequency band combinations for the first network (107) associated with the first SIM card (103) is prepared for a UE capability information message previously sent by the UE (101) to the first network (107), or for a temporary UE capability of a MUSIM previously sent by the UE (101), or for a frequency band conflict previously reported by the UE (101).

[0103] h) a list of conflicting downlink and / or uplink frequency bands or frequency band combinations for the first network (107) associated with the first SIM card (103) is prepared for a UE capability information message previously sent by the UE (101) to the first network (107), or for a temporary UE capability of a MUSIM previously sent by the UE (101), or for a frequency band conflict previously reported by the UE (101).

[0104] i) a list of non-conflicting downlink and / or uplink frequency bands or frequency band combinations for the first network (107) associated with the first SIM card (103) is prepared for a UE capability information message previously sent by the UE (101) to the first network (107), or for a temporary UE capability of a MUSIM previously sent by the UE (101), or for a frequency band conflict previously reported by the UE (101).

[0105] j) a list of downlink and / or uplink frequency bands or frequency band combinations supported by the first SIM card (103) for a first network (107) associated with the first SIM card (103).

[0106] In an embodiment, the aforementioned embodiments for signaling (eg, UE assistance information message) frequency band conflict (or eliminating frequency band conflict) are applied for the first time to exchange / interchange the description.

[0107] In an embodiment, the UE (101) transmits a signaling message to either the first network (107) or the second network (109), the signaling message including at least one of the following: a reason for occurrence of a frequency band conflict or elimination of a frequency band conflict; a preference for configuration / reconfiguration; switching; redirection; release; activation; deactivation of, for example, CA configuration (i.e., SCells), DC configuration (i.e., SCG), measurement configuration, measurement objects, frequency bands, frequency band combinations, carriers, cells; connection, and UE assistance information.

[0108] In another embodiment, the signaling message may contain a conflicting list of sidelink frequency bands or frequency band combinations.

[0109] In an embodiment, a UE (101) configured by at least one of a first network (107) or a second network (109) is configured to report the occurrence of a band conflict or the elimination of a band conflict in a signaling message through an OtherConfig message. Upon receiving the configuration, the UE (101) may report the occurrence of a band conflict or the elimination of a band conflict through a signaling message. The transmission used to configure the UE (101) to report is determined based on the UE capability. When the UE (101) supports MUSIM and dual transmission and dual reception at the same time, the UE is determined to be capable of reporting. In addition, OtherConfig includes a prohibit timer to restrict the UE (101) from excessively or frequently reporting the occurrence of a band conflict or the elimination of a band conflict. For example, when the prohibit timer is running, the UE (101) does not perform reporting. Similarly, when the prohibit timer is not running, the UE (101) will perform reporting of the occurrence of a band conflict or the elimination of a band conflict. In an embodiment, the OtherConfig message includes a set of frequency bands or frequency band combinations. In addition, if there is a conflict between the frequency bands or frequency band combinations provided in OtherConfig (i.e., the candidate frequency band list or frequency band combination list), the UE (101) will send UE assistance information (UAI) for band conflict reporting. In an embodiment, the first network (107) or the second network (109) may use another RRC IE in addition to OtherConfig.

[0110] In some embodiments, the first network (107) or the second network (109) does not configure an inhibit timer in OtherConfig for reporting the occurrence of a frequency band conflict (or the resolution of a frequency band conflict). When the inhibit timer is not configured, the UE (101) immediately reports when encountering or determining that a frequency band conflict problem (or the resolution of a frequency band conflict) is about to occur. In another embodiment, the inhibit timer may be configured with a value of 0 so that the timer immediately reports when encountering or determining that a frequency band conflict problem (or the resolution of a frequency band conflict) is about to occur.

[0111] In an embodiment, a specification example of a configuration related to reporting the occurrence of a frequency band conflict (or elimination of a frequency band conflict) is provided as follows:

[0112] The UE shall: 1> If the received otherConfig contains musim-BandConflictAssistanceConfig: 2>If musim-BandConflcitAssistanceConfig is set to settings: 3> Considering that it will be configured to provide MUSIM assistance information for band conflicts; 2> Otherwise: 3> Consider that it will not be configured to provide MUSIM assistance information for band conflict and stop timer Txyz (also called prohibit timer) (if running); A UE (101) capable of providing MUSIM assistance information for band conflict may initiate the procedure if it is configured to do so, upon determining that it is experiencing a band conflict or resolving a band conflict, upon determining that it is about to enter a scenario that causes or resolves a band conflict, or upon a change in performance due to a band conflict or resolving a band conflict.

[0113] 1> If the UE is configured to provide MUSIM assistance information for band conflict

[0114] 2> if the UE has determined a level of performance degradation, or identified a potential band conflict or a scenario to eliminate band conflict, and the UE has not transmitted a UEAssistanceInformation message with musim-BandCombinationList since it was configured to provide MUSIM assistance information for band conflict; or

[0115] 2> If the current musim-BandCombinationList is different from that indicated in the last transmitted UEAssistanceInformation message (containing musim-BandCombinationList), and the timer Txyz (prohibit timer) is not running: 3> Initiate the transmission of the UEAssistanceInformation message to provide the current musim-BandCombinationList; 3> Start or restart timer Txyz (prohibit timer), where the timer value is set to musim-BandConflictProhibitTimer.

[0116] In an embodiment, upon initiating RRC connection recovery, the UE (101) releases the musim-BandConflictAssistanceConfig (if stored) from the UE inactive access stratum (AS) context and stops the timer Txyz (inhibit timer) (if running).

[0117] In an embodiment, Musim-BandConflictAssistanceConfig may include at least one of the following: BandConflcitProhibitTimer, a set of frequency bands or frequency band combinations, an explicit or implicit indication that band conflict reporting is allowed, a trigger / condition / scenario for initiating band conflict reporting, and any associated parameters for band conflict reporting.

[0118] In an embodiment, upon initiating RRC connection re-establishment, the UE (101) releases the musim-BandConflictAssistanceConfig (if configured) and stops the timer Txyz (inhibit timer) (if running).

[0119] In an embodiment, a musim-BandConflictProhibitTimer (also referred to as a prohibit timer) is started when UE assistance information with MUSIM band conflict information (or eliminating MUSIM band conflict) is transmitted.

[0120] In an embodiment, the musim-BandConflictProhibitTimer will be stopped (and / or released) when the musim-BandConflictAssistanceConfig is released during at least one of the connection reestablishment procedure or the recovery procedure, or when the musim-BandConflictAssistanceConfig set to release is received, or when an RRC connection release or an RRC connection release with suspendconfig is received, or when the state transitions from RRC connected to RRC idle / RRC inactive, or when reselecting to a cell that does not support MUSIM band conflict reporting or handing over to a network node that does not support MUSIM band conflict reporting.

[0121] In an embodiment, the UE (101) indicates support for MUSIM band conflict reporting to the network in a UE capability information message so that the network can configure and allow the UE to perform MUSIM band conflict reporting.

[0122] In an embodiment, musim-BandConflictAssistanceConfig is included in musim-AssistanceConfig, and the embodiments of the present invention described for musim-BandConflictAssistanceConfig are also applicable to musim-AssistanceConfig.

[0123] In an embodiment, the UE (101) employs at least one of a passive method and an active method to report a MUSIM band conflict (or eliminate a MUSIM band conflict). The passive method includes reporting UE assistance information containing MUSIM band conflict information after the UE encounters a band conflict and needs to correct the situation. This determination may be based on a noticed level drop or upon exiting the dual RX / dual Tx mode. The active method includes reporting UE assistance information containing MUSIM band conflict information in advance, or simply entering a band conflict scenario and avoiding potential problems. This determination may be based on potential possibility or entering a scenario that may result in a band conflict.

[0124] In an embodiment, the UE capabilities conveyed via the UE capability information message are (statically) stored at at least one of the radio access network (RAN) and the core network (CN), while the updated capabilities conveyed via the UE assistance information (e.g., including MUSIM band conflict information) are temporarily stored at the RAN and used for band / carrier / cell / measurement object configuration / modification / release / activation / deactivation for carrier aggregation (e.g., secondary serving cell SCell) and / or dual connectivity (e.g., secondary cell group SCG) scenarios. During handover from a source gNB to a target gNB, the source gNB provides the target gNB with temporary capabilities (including MUSIM band conflict information) so that the UE (101) can be appropriately configured / reconfigured taking into account the indicated MUSIM band conflict information. This information can be conveyed in a handover preparation information RRC message in a HandoverRequest, and the target gNB allocates resources for the UE and shares a handover confirmation message with the source gNB, and the source gNB provides the UE (101) with an RRC reconfiguration message including the configuration to be used for the target gNB.

[0125] In an embodiment, it is up to the UE (101) implementation to determine which network or RAT associated with one SIM card to select for signaling UE assistance information for MUSIM band conflict (or eliminating band conflict). In addition, the UE (101) implementation may consider at least one of the following network selection factors, which may include: a network that supports the primary SIM card, a network that supports NR, a network that supports carrier aggregation and / or dual connectivity, a network that is a victim network of the band conflict, a network that is affected by the band conflict, a network that is selected in a round-robin manner or in some preconfigured scheduling pattern, or a random selection of a network.

[0126] In an embodiment, if one of the networks is New Radio (NR) and the other is Long Term Evolution (LTE), the NR network may be selected to signal UE assistance information for MUSIM band conflict (or band conflict resolution). In an embodiment, the triggering conditions and scenarios to be considered for MUSIM band conflict are determined by the UE implementation. That is, when MUSIM band conflict reporting is configured, the MUSIM UE may trigger a band conflict report when it determines a level of performance degradation or a potential band conflict scenario.

[0127] Figure 2BThe present invention is a block diagram illustrating a network device for handling MUSIM frequency band conflicts in a telecommunications network according to an embodiment disclosed herein. The network device (107, 109) includes a processor (209), a memory (211), an I / O interface (217), and a communication management controller (215). The network device (107, 109) may be at least one of a first network (107) associated with a first SIM (103) of a UE (101) and a second network (109) associated with a second SIM (105) of the UE (101). In addition, the processor (209) of the network device (107, 109) communicates with the memory (211), the I / O interface (217), and the communication management controller (215). The processor (209) is configured to execute instructions stored in the memory (211) and perform various processes. The processor (209) may include one or more processors, which may be: a general-purpose processor, such as a central processing unit (CPU), an application processor (AP), etc.; a pure graphics processing unit, such as a graphics processing unit (GPU), a vision processing unit (VPU); and / or an artificial intelligence (AI) dedicated processor, such as a neural processing unit (NPU).

[0128] Furthermore, the memory (211) of the network device (107, 109) includes a storage location addressable by the processor (209). The memory (211) is not limited to volatile memory and / or non-volatile memory. Furthermore, the memory 211 may include one or more computer-readable storage media. The memory (211) may include a non-volatile storage element. For example, the non-volatile storage element may include a magnetic hard disk, an optical disk, a floppy disk, a flash memory, or an electrically programmable memory (EPROM) or an electrically erasable and programmable (EEPROM) memory. The memory (211) may store media streams such as audio streams, video streams, tactile feedback, etc. The memory (211) may store several information received from the UE (101). The several information received from the UE (101) may include, but is not limited to: MUSIM assistance information, temporary capability restrictions on a frequency band list or frequency band combination list associated with a selected network, or removal of capability restrictions on a frequency band list or frequency band combination list, and configuration or reconfiguration preferences.

[0129] The I / O interface (217) transmits information between the memory (211) and an external peripheral device. The peripheral device is an input / output device associated with the network device (107, 109). The I / O interface (217) receives a number of information from the UE (101). The number of information received from the UE (101) may include, but is not limited to, a signaling message indicating the occurrence of a frequency band conflict or the elimination of a frequency band conflict.

[0130] The communication management controller (215) communicates with the I / O interface (217) and the memory (211) for handling MUSIM band conflicts in the telecommunications network. The communication management controller (215) is an innovative hardware implemented by physical implementation of both analog and digital circuits (including logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive and active electronic components, and optical components). The communication management controller (215) of the UE (101) transmits an OtherConfig message in an RRC reconfiguration message, which provides an indication of transmission of MUSIM assistance information. The OtherConfig message includes at least one of the following: a MUSIM capability limitation configuration, a prohibition timer, a candidate band list or a band combination list, an explicit or implicit indication that a band conflict report is allowed, and a reason for initiating a band conflict report. In addition, the communication management controller (215) receives a signaling message indicating the occurrence of a band conflict or the elimination of a band conflict. The signaling message includes at least one of the following: a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. In addition, the communication management controller (215) sends an RRC reconfiguration message. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving a frequency band conflict or eliminating a frequency band conflict. In addition, the communication management controller (215) simultaneously performs at least one of a transmission or a reception operation with the UE (101) without encountering a frequency band conflict between the first network (107) and the second network (109).

[0131] In an embodiment, upon receiving signaling (e.g., UE assistance information message) of MUSIM band conflict (or elimination of MUSIM band conflict) from a UE, the first network (107) or the second network (109) of the corresponding SIM (103, 105) may take an action, which at least includes configuration / reconfiguration, handover, redirection, release, activation, deactivation (e.g., CA configuration, DC configuration, measurement configuration, measurement object, frequency band, frequency band combination, carrier, cell, connection) for the UE (101), and indicate it to the UE (101) through an RRC reconfiguration message (configuration setting, modification or release) or an RRC release message or a MAC CE (e.g., activation or deactivation).

[0132] In an embodiment, the network indicates support for temporary capability limitation reporting including MUSIM band conflicts in at least one of a system information block (SIB) or an RRC signaling message.

[0133] Figure 3 is a flow chart illustrating a method for handling MUSIM band conflicts in a telecommunications network according to embodiments disclosed herein.

[0134] At block 301, the UE (101) determines the occurrence of a frequency band conflict or the elimination of a frequency band conflict MUSIM operation between a first network (107) and a second network (109). The occurrence of the frequency band conflict or the elimination of the frequency band conflict is determined based on a performance change of the UE (101). The performance change is determined based on at least one of a measurement report, an interference level, a block error rate, and a quality of service. In addition, the performance change can be an improvement in performance or a degradation in performance. When the performance of the UE (101) is degraded, it is determined that the frequency band conflict has occurred. Similarly, when the performance of the UE (101) is improved, it is determined that the frequency band conflict has been eliminated.

[0135] At block 303, the UE (101) selects a first network (107) or a second network (109) to transmit MUSIM assistance information based on network characteristics. The network characteristics may include, but are not limited to, the ability to support 5G New Radio (NR), the ability to support carrier aggregation, or dual connectivity, being determined to be a victim network of a frequency band conflict, and being a network affected by the frequency band conflict.

[0136] At block 305, the UE (101) transmits a signaling message to the selected network to indicate the occurrence of a frequency band conflict or the resolution of a frequency band conflict. The signaling message includes at least one of the following: a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message. The UE assistance information message includes MUSIM assistance information.

[0137] At block 307, the UE (101) receives an RRC reconfiguration message from the network device. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving or eliminating frequency band conflicts.

[0138] At block 309 , the UE ( 101 ) performs at least one of a transmission or reception operation with the first network and the second network simultaneously without encountering a frequency band conflict between the first network and the second network.

[0139] Figure 4 is a flow chart illustrating a method for handling MUSIM band conflicts in a telecommunications network according to embodiments disclosed herein.

[0140] At block 401, the first network (107) or the second network (109) transmits an OtherConfig message in an RRC reconfiguration message, which provides an indication of transmission of MUSIM assistance information. The OtherConfig message may include, but is not limited to, a MUSIM capability limitation configuration, an inhibit timer, a candidate band list or a band combination list, an explicit or implicit indication that band conflict reporting is allowed, and a reason for initiating a band conflict report. The UE (101) transmits the MUSIM assistance information based on the inhibit timer indicated by at least one of the first network (107) or the second network (109). Specifically, when the inhibit timer is not included in the OtherConfig message, the UE (101) is allowed to immediately report the occurrence of a band conflict or the elimination of a band conflict. In addition, the inhibit timer is included to limit frequent reporting of the occurrence of a band conflict or the elimination of a band conflict.

[0141] At step 403, the first network (107) or the second network (109) receives a signaling message indicating that a frequency band conflict has occurred or that a frequency band conflict has been resolved. The signaling message may include, but is not limited to, a UE assistance information message, a UE capability message, an RRC recovery request message, an RRC recovery complete message, an RRC connection request message, and an RRC setup complete message.

[0142] At block 405, the first network (107) or the second network (109) transmits an RRC reconfiguration message. The RRC reconfiguration message includes setting, deleting, or modifying a frequency band list or a frequency band combination list for resolving or eliminating frequency band conflicts.

[0143] At block 407, the first network (107) and the second network (109) simultaneously perform transmission or reception operations with the UE (101) without encountering a frequency band conflict.

[0144] The various actions, behaviors, frames, steps, etc. in the method are performed in the order presented, in a different order, or simultaneously. In addition, in some embodiments, some actions, behaviors, frames, steps, etc. are omitted, added, modified, skipped, etc. without departing from the scope of the proposed method.

[0145] The foregoing description of specific embodiments will sufficiently reveal the general nature of the embodiments herein so that others can readily modify and / or adapt such specific embodiments to various applications by applying current knowledge without departing from the general concepts, and therefore, such adaptations and modifications are intended to be understood as falling within the meaning and scope of equivalents of the disclosed embodiments. It should be understood that the wording or terminology employed herein is for descriptive purposes only and not for purposes of limitation. Therefore, although the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein may be practiced with modifications within the scope of the embodiments as described herein.

Claims

1. A method performed by a user equipment (UE) supporting a multiple universal user identity module (MUSIM) in a wireless communication system, the method comprising: receiving a radio resource control (RRC) message including further configuration information from a first base station associated with a first subscriber identity module (SIM), wherein the further configuration information includes configuration information regarding MUSIM capability limitations; Setting the preference content of temporary capability restriction in the UE assistance information message; and The UE assistance information message including the content is transmitted to the first base station.

2. The method according to claim 1, wherein setting the content comprises: In a case where the UE has a preference for releasing a secondary cell group (SCG), first information related to the SCG to be released for MUSIM operation is included in the UE assistance information message.

3. The method according to claim 1, wherein setting the content comprises: In a case where the UE has a preference indicating a frequency band associated with limited capability, second information related to the frequency band associated with the limited capability for MUIM operation is included in the UE assistance information message.

4. The method according to claim 1, wherein setting the content comprises: In a case where the UE has a preference indicating a frequency band to be avoided, third information related to the frequency band to be avoided for MUSIM operation is included in the UE assistance information.

5. The method according to claim 1, in, In a case where the UE does not have a preference for the temporary capability restriction, the UE assistance information does not include the preference for the temporary capability restriction.

6. The method of claim 1 , further comprising: Start T346n, where the timer value is set to the MUSIM prohibit timer, The configuration information about the MUSIM capability limitation further includes at least one MUSIM candidate frequency band list and the MUSIM prohibition timer.

7. The method of claim 1 , further comprising: receiving a system information block (SIB) from the first base station, the system information block including a first indication, the first indication indicating that the UE is allowed to transmit a second indication, wherein the second indication indicates the temporary capability limitation of the UE due to MUSIM operation; and The second indication is transmitted to the first base station via at least one of an RRC recovery complete message or an RRC setup complete message.

8. The method according to claim 1, The UE assistance information message is associated with a second base station having a second SIM card.

9. A method performed by a first base station associated with a first subscriber identity module (SIM) supporting a multi-universal subscriber identity module (MUSIM) in a wireless communication system, the method comprising: transmitting a radio resource control (RRC) message including other configuration information to a user equipment (UE), wherein the other configuration information includes configuration information about MUSIM capability limitation; and A UE assistance information message including preference content of temporary capability restriction is received from the UE.

10. The method according to claim 9, in, In a case where the UE has a preference for releasing a secondary cell group (SCG), the UE assistance information message includes first information related to the SCG to be released for MUSIM operation. wherein, in a case where the UE has a preference indicating a frequency band associated with a restricted capability, the UE assistance information message includes second information related to a frequency band associated with the restricted capability for MUIM operation, wherein, in a case where the UE has a preference indicating a frequency band to be avoided, the UE assistance information includes third information related to the frequency band to be avoided for MUSIM operation, and Wherein, in the case that the UE does not have a preference for the temporary capability restriction, the UE auxiliary information does not include the preference for the temporary capability restriction, and The UE assistance information message is associated with a second base station having a second SIM.

11. The method according to claim 9, Transmitting a system information block SIB to a base station, where the system information block includes a first indication, where the first indication indicates that the UE is allowed to transmit a second indication, wherein, The second indication indicates the temporary capability limitation of the UE caused by MUSIM operation; as well as The second indication is received from the UE via at least one of an RRC recovery complete message or an RRC setup complete message.

12. A user equipment (UE) supporting a multiple universal user identity module (MUSIM) in a wireless communication system, the UE comprising: transceiver; as well as The controller is configured as: receiving a radio resource control (RRC) message including further configuration information from a first base station associated with a first subscriber identity module (SIM), wherein the further configuration information includes configuration information regarding MUSIM capability limitations; Setting the preference content of temporary capability restriction in UE assistance information message; as well as The UE assistance information message including the content is transmitted to the first base station.

13. The UE according to claim 12, wherein the controller is further configured to: In a case where the UE has a preference for releasing a secondary cell group (SCG), first information related to the SCG to be released for MUSIM operation is included in the UE assistance information message; In a case where the UE has a preference indicating a frequency band associated with a restricted capability, including second information related to a frequency band associated with the restricted capability for MUIM operation in the UE assistance information message, In a case where the UE has a preference indicating a frequency band to be avoided, including third information related to the frequency band to be avoided for MUSIM operation in the UE assistance information, in, In a case where the UE does not have a preference for the temporary capability restriction, the UE assistance information does not include the preference for the temporary capability restriction, and The UE assistance information message is associated with a second base station having a second SIM.

14. The UE according to claim 12, wherein the controller is further configured to: Start T346n, where Setting a timer value to a MUSIM prohibit timer, wherein the configuration information about the MUSIM capability limitation further includes at least one MUSIM candidate frequency band list and the MUSIM prohibit timer, receiving a system information block (SIB) from the first base station, the system information block including a first indication, the first indication indicating that the UE is allowed to transmit a second indication, wherein the second indication indicates the temporary capability limitation of the UE due to MUSIM operation, and The second indication is transmitted to the first base station via at least one of an RRC recovery complete message or an RRC setup complete message.

15. A base station associated with a first subscriber identity module (SIM) supporting a multiple universal subscriber identity module (MUSIM) in a wireless communication system, the first base station comprising: transceiver; as well as The controller is configured as: transmitting a radio resource control (RRC) message including other configuration information to a user equipment (UE), wherein the other configuration information includes configuration information about MUSIM capability limitation; and A UE assistance information message including preference content of temporary capability restriction is received from the UE.

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