Method and system for managing bandwidth parts in a wireless communication network

Abstract

The present disclosure relates to a method [300] and a system [200a] for managing bandwidth parts in a wireless communication network [200] The system [200a] comprises a configuration unit [202] connected to a network node [210] and a user equipment (UE), configured to configure, for the UE [208], a first bandwidth part (BWP), and a second BWP. The first BWP, and the second BWP are configured based on a set of configuration data. Further, a transceiver unit [204], connected to the UE [208], is configured to transmit a first scheduling request (SR) on the second BWP. Further, in response to absence of a response, at the UE [208], corresponding to the transmitted first SR within a predefined time period, a selection unit [206] is configured to select, at the UE [208], the first BWP, and the transceiver unit [204] is configured to transmit a second SR on the first BWP.

Description

METHOD AND SYSTEM FOR MANAGING BANDWIDTH PARTS IN A WIRELESS COMMUNICATION NETWORKFIELD OF DISCLOSURE

[0001] Embodiments of the present disclosure generally relate to network performance management systems. More particularly, embodiments of the present disclosure relate to methods and systems for managing bandwidth parts in a wireless communication network.BACKGROUND

[0002] The following description of the related art is intended to provide background information pertaining to the field of the disclosure. This section may include certain aspects of the art that may be related to various features of the present disclosure. However, it should be appreciated that this section is used only to enhance the understanding of the reader with respect to the present disclosure, and not as admissions of the prior art.

[0003] Wireless communication technology has rapidly evolved over the past few decades, with each generation bringing significant improvements and advancements. The first generation of wireless communication technology was based on analog technology and offered only voice services. However, with the advent of the second-generation (2G) technology, digital communication and data services became possible, and text messaging was introduced. 3G technology marked the introduction of high-speed internet access, mobile video calling, and location-based services. The fourth generation (4G) technology revolutionized wireless communication with faster data speeds, better network coverage, and improved security. Currently, the fifth generation (5G) technology is being deployed, promising even faster data speeds, low latency, and the ability to connect multiple devices simultaneously. With each generation, wireless communication technology has become more advanced, sophisticated, and capable of delivering more services to its users.

[0004] In 4G LTE network, a user equipment was required to monitor / scan the entire bandwidth to check if there is any data scheduled for download. Such scanning of the entire bandwidth would require large energy consumption and lead to faster draining of the UE battery. In 5G or subsequent technologies such as 6G, the UE is configured to monitor only a Bandwidthpart (BWP) instead of the entire bandwidth. The communication between the UE and the network then happens on the BWP configured at the UE. This results in considerable power saving at the UE. Moreover, a UE may be required to switch from one BWP to another.

[0005] When a UE, configured with a BWP, wants to communicate with the network, the UE sends a scheduling request to a network interface server. If the network interface server accepts the scheduling request, data transfer is enabled from UE to network via a network interface server. It is possible that a scheduling request is not granted because the corresponding BWP is suffering from high interference or BWP channel condition is poor or BWP channel load is prohibitively high. In such a case, the UE sends the scheduling request for a maximum allowable number of attempts prescribed by the network. In conventional approaches, if the scheduling request is not granted after exhausting the maximum allowable number of attempts, the UE then switches to an initial or default BWP. Here, the initial BWP is that BWP which is used by the UE for latching to the network. Moreover, there is a predefined time gap between successive scheduling requests sent by the UE to the network interface server. As a result, by allowing UE to exhaust the maximum allowable number of attempts, a large amount of time is spent waiting for approval of the scheduling request. This is undesirable as during this time, the UE is unable to send data to the network interface server. This impacts the quality of service and results in deteriorated user experience.

[0006] Thus, there exists an imperative need in the art for a method and system for earlier switching of bandwidth parts after scheduling request failure, which the present disclosure aims to address.OBJECTS OF THE DISCLOSURE

[0007] Some of the objects of the present disclosure, which at least one embodiment disclosed herein satisfies are listed herein below.

[0008] It is an object of the present disclosure to provide a system and a method for managing bandwidth parts in a wireless communication network.

[0009] It is another object of the present disclosure to provide a solution that reduces transition time between an active BWP and an initial or default BWP.

[0010] It is yet another object of the present disclosure to provide a solution that improves availability of UE to the network.

[0011] It is yet another object of the present disclosure to provide a solution that prevents frequent re-latching of UE to the network.SUMMARY

[0012] This section is provided to introduce certain aspects of the present disclosure in a simplified form that are further described below in the detailed description. This summary is not intended to identify the key features or the scope of the claimed subject matter.

[0013] An aspect of the present disclosure may relate to a method for managing bandwidth parts in a wireless communication network. The method comprises configuring, by a configuration unit connected to a network node in the wireless communication network, and a user equipment (UE), for the UE, a first bandwidth part (BWP), and a second BWP. Herein, the first BWP, and the second BWP are configured based on a set of configuration data. Further, the method comprises transmitting, by a transceiver unit connected to the UE, a first scheduling request (SR) on the second BWP. Herein, in response to absence of a response, at the UE, corresponding to the transmitted first SR within a predefined time period, the method comprises: selecting, by a selection unit, at the UE, the first BWP, and transmitting, by the transceiver unit, a second SR on the first BWP.

[0014] In an exemplary aspect of the present disclosure, the first BWP is a default BWP for the UE, wherein the default BWP is used by the UE on start-up of the UE. Further, the second BWP is an active BWP, wherein the active BWP is used by the UE

[0208] subsequent to the use of the default BWP, and wherein the active BWP is selected, at the UE

[0208] , by the selection unit

[0206] ,

[0015] In an exemplary aspect of the present disclosure, in response to absence of a response corresponding to the transmitted second SR within a predefined time period, the method comprises at least one of: selecting, by the selection unit, at the UE, the second BWP, and transmitting, bythe transceiver unit, from the UE, a random-access channel (RACH) request to another network node in the wireless communication network

[0200] ,

[0016] In an exemplary aspect of the present disclosure, the set of configuration data comprises downlink control information (DCI), wherein the DCI comprises BWP indicator data indicative of identities of one or more BWP that is configured to receive a signal from the UE.

[0017] In an exemplary aspect of the present disclosure, the step of configuring, at the UE, the first bandwidth part (BWP), and the second BWP comprises receiving, by a transceiver unit connected to the network node, from the UE a random-access channel (RACH) request. Further, transmitting, by the transceiver unit, to the UE, in response to the received RACH request, the configuration data, wherein the configuration data comprises at least identities of the first BWP, and the second BWP. Next, registering, by the selection unit connected to the UE, the configuration data.

[0018] In an exemplary aspect of the present disclosure, the step of transmitting the first SR on the second BWP comprises at least one of: transmitting, by the transceiver unit, one first SR at a beginning of the predefined time period, and transmitting, by the transceiver unit, a plurality of first SRs during the predefined time period.

[0019] In an exemplary aspect of the present disclosure, the first SR and the second SR relate to a request by the UE to gain access to a control channel, and wherein the control channel is selected from at least one of a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Control Channel (PUCCH), and a Physical Uplink Shared Channel (PUSCH).

[0020] Another aspect of the present disclosure may relate to a system for managing bandwidth parts in a wireless communication network. The system comprises a configuration unit connected to a network node in the wireless communication network, and a user equipment (UE), the configuration unit configured to configure, for the UE, a first bandwidth part (BWP), and a second BWP. Further, the first BWP, and the second BWP are configured based on a set of configuration data. Further, the system comprises a transceiver unit connected to the UE, the transceiver unit configured to transmit a first scheduling request (SR) on the second BWP. Further, the system comprises a selection unit. Further, in response to absence of a response, at the UE,corresponding to the transmitted first SR within a predefined time period the selection unit is configured to select, at the UE, the first BWP, and the transceiver unit is configured to transmit a second SR on the first BWP.

[0021] Yet another aspect of the present disclosure may relate to a user equipment (UE) for managing bandwidth parts in a wireless communication network. The UE comprises a memory. Further the UE comprises a processor coupled to the memory. Further, the processor is configured to configure, for the UE, a first bandwidth part (BWP), and a second BWP, wherein the first BWP, and the second BWP are configured based on a set of configuration data. Further, the processor is configured to transmit a first scheduling request (SR) on the second BWP. Further, in response to absence of a response, at the processor, corresponding to the transmitted first SR within a predefined time period, the processor is configured to select, at the UE, the first BWP, and transmit a second SR on the first BWP.

[0022] Yet another aspect of the present disclosure may relate to a non-transitory computer- readable storage medium, storing instructions for managing bandwidth parts in a wireless communication network, the storage medium comprising executable code which, when executed by one or more units of a system, causes: a configuration unit connected to a network node in the wireless communication network, and a user equipment (UE), to configure, for the UE, a first bandwidth part (BWP), and a second BWP, wherein the first BWP, and the second BWP are configured based on a set of configuration data; and a transceiver unit connected to the UE, to transmit a first scheduling request (SR) on the second BWP, wherein, in response to absence of a response, at the UE, corresponding to the transmitted first SR within a predefined time period, further causes: a selection unit to select, at the UE, the first BWP; and the transceiver unit to transmit a second SR on the first BWP.DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein, and constitute a part of this disclosure, illustrate exemplary embodiments of the disclosed methods and systems in which like reference numerals refer to the same parts throughout the different drawings. Components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Also, the embodiments shown in the figures are not to be construed as limiting the disclosure, but the possible variants of the method and system according to the disclosure are illustrated herein to highlight the advantages of the disclosure. It will beappreciated by those skilled in the art that disclosure of such drawings includes disclosure of electrical components or circuitry commonly used to implement such components.

[0024] FIG. 1 illustrates an exemplary block diagram of a computing device upon which the features of the present disclosure may be implemented, in accordance with exemplary implementations of the present disclosure.

[0025] FIG. 2 illustrates an exemplary block diagram of a system for managing bandwidth parts in a wireless communication network, in accordance with exemplary implementations of the present disclosure.

[0026] FIG. 3 illustrates a method flow diagram for managing bandwidth parts in a wireless communication network, in accordance with exemplary implementations of the present disclosure.

[0027] FIG. 4 illustrates an exemplary flow diagram for managing bandwidth parts in a wireless communication network, in accordance with exemplary implementations of the present disclosure.

[0028] FIG. 5 illustrates another exemplary flow diagram for managing bandwidth parts in a wireless communication network, in accordance with exemplary implementations of the present disclosure.

[0029] FIG. 6 illustrates another exemplary flow diagram for managing bandwidth parts in a wireless communication network, in accordance with exemplary implementations of the present disclosure is shown

[0030] The foregoing shall be more apparent from the following more detailed description of the disclosure.DETAILED DESCRIPTION

[0031] In the following description, for the purposes of explanation, various specific details are set forth in order to provide a thorough understanding of embodiments of the presentdisclosure. It will be apparent, however, that embodiments of the present disclosure may be practiced without these specific details. Several features described hereafter may each be used independently of one another or with any combination of other features. An individual feature may not address any of the problems discussed above or might address only some of the problems discussed above.

[0032] The ensuing description provides exemplary embodiments only, and is not intended to limit the scope, applicability, or configuration of the disclosure. Rather, the ensuing description of the exemplary embodiments will provide those skilled in the art with an enabling description for implementing an exemplary embodiment. It should be understood that various changes may be made in the function and arrangement of elements without departing from the spirit and scope of the disclosure as set forth.

[0033] Specific details are given in the following description to provide a thorough understanding of the embodiments. However, it will be understood by one of ordinary skill in the art that the embodiments may be practiced without these specific details. For example, circuits, systems, processes, and other components may be shown as components in block diagram form in order not to obscure the embodiments in unnecessary detail.

[0034] Also, it is noted that individual embodiments may be described as a process which is depicted as a flowchart, a flow diagram, a data flow diagram, a structure diagram, or a block diagram. Although a flowchart may describe the operations as a sequential process, many of the operations may be performed in parallel or concurrently. In addition, the order of the operations may be re-arranged. A process is terminated when its operations are completed but could have additional steps not included in a figure.

[0035] The word “exemplary” and / or “demonstrative” is used herein to mean serving as an example, instance, or illustration. For the avoidance of doubt, the subject matter disclosed herein is not limited by such examples. In addition, any aspect or design described herein as “exemplary” and / or “demonstrative” is not necessarily to be construed as preferred or advantageous over other aspects or designs, nor is it meant to preclude equivalent exemplary structures and techniques known to those of ordinary skill in the art. Furthermore, to the extent that the terms “includes,” “has,” “contains,” and other similar words are used in either the detailed description or the claims,such terms are intended to be inclusive — in a manner similar to the term “comprising” as an open transition word — without precluding any additional or other elements.

[0036] As used herein, a “processing unit” or “processor” or “operating processor” includes one or more processors, wherein processor refers to any logic circuitry for processing instructions. A processor may be a general-purpose processor, a special purpose processor, a conventional processor, a digital signal processor, a plurality of microprocessors, one or more microprocessors in association with a Digital Signal Processing (DSP) core, a controller, a microcontroller, Application Specific Integrated Circuits, Field Programmable Gate Array circuits, any other type of integrated circuits, etc. The processor may perform signal coding data processing, input / output processing, and / or any other functionality that enables the working of the system according to the present disclosure. More specifically, the processor or processing unit is a hardware processor.

[0037] As used herein, “a user equipment”, “a user device”, “a smart-user-device”, “a smartdevice”, “an electronic device”, “a mobile device”, “a handheld device”, “a wireless communication device”, “a mobile communication device”, “a communication device” may be any electrical, electronic and / or computing device or equipment, capable of implementing the features of the present disclosure. The user equipment / device may include, but is not limited to, a mobile phone, smart phone, laptop, a general-purpose computer, desktop, personal digital assistant, tablet computer, wearable device or any other computing device which is capable of implementing the features of the present disclosure. Also, the user device may contain at least one input means configured to receive an input from unit(s) which are required to implement the features of the present disclosure.

[0038] As used herein, “storage unit” or “memory unit” refers to a machine or computer- readable medium including any mechanism for storing information in a form readable by a computer or similar machine. For example, a computer-readable medium includes read-only memory (“ROM”), random access memory (“RAM”), magnetic disk storage media, optical storage media, flash memory devices or other types of machine-accessible storage media. The storage unit stores at least the data that may be required by one or more units of the system to perform their respective functions.

[0039] As used herein “interface” or “user interface” refers to a shared boundary across which two or more separate components of a system exchange information or data. The interface mayalso refer to a set of rules or protocols that define communication or interaction of one or more modules or one or more units with each other, which also includes the methods, functions, or procedures that may be called.

[0040] All modules, units, components used herein, unless explicitly excluded herein, may be software modules or hardware processors, the processors being a general-purpose processor, a special purpose processor, a conventional processor, a digital signal processor (DSP), a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits (ASIC), Field Programmable Gate Array circuits (FPGA), any other type of integrated circuits, etc.

[0041] As used herein the transceiver unit includes at least one receiver and at least one transmitter configured respectively for receiving and transmitting data, signals, information or a combination thereof between units / components within the system and / or connected with the system.

[0042] As discussed in the background section, the current known solutions have several shortcomings. The present disclosure aims to overcome the above-mentioned and other existing problems in this field of technology by providing a method and a system of managing bandwidth parts in a wireless communication network. The present disclosure states that if the UE fails to receive a response from the network interface server, after sending the scheduling request SR for a set number of times, the UE switches back to the default BWP and attempts to decode the PDCCH there. The present solution ensures the UE is able to maintain communication with the base station by switching between bandwidths and retrying transmissions, providing a reliable fallback mechanism in cases of failed communication attempts.

[0043] FIG. 1 illustrates an exemplary block diagram of a computing device

[0100] (herein, also referred to as a computer system

[0100] ) upon which one or more features of the present disclosure may be implemented in accordance with an exemplary implementation of the present disclosure. In an implementation, the computing device

[0100] may also implement a method for managing bandwidth parts in a wireless communication network utilising a system, or one or more sub-systems, provided in the network. In another implementation, the computing device

[0100] itself implements the method for managing bandwidth parts in a wireless communication network,using one or more units configured within the computing device

[0100] , wherein said one or more units are capable of implementing the features as disclosed in the present disclosure.

[0044] The computing device

[0100] may include a bus

[0102] or other communication mechanism for communicating information, and a hardware processor

[0104] coupled with bus

[0102] for processing information. The hardware processor

[0104] may be, for example, a general- purpose microprocessor. The computing device

[0100] may also include a main memory

[0106] , such as a random-access memory (RAM), or other dynamic storage device, coupled to the bus

[0102] for storing information and instructions to be executed by the processor

[0104] , The main memory

[0106] also may be used for storing temporary variables or other intermediate information during execution of the instructions to be executed by the processor

[0104] , Such instructions, when stored in non-transitory storage media accessible to the processor

[0104] , render the computing device

[0100] into a special-purpose machine that is customized to perform the operations specified in the instructions. The computing device

[0100] further includes a read only memory (ROM)

[0108] or other static storage device coupled to the bus

[0102] for storing static information and instructions for the processor

[0104] ,

[0045] A storage device

[0110] , such as a magnetic disk, optical disk, or solid-state drive is provided and coupled to the bus

[0102] for storing information and instructions. The computing device

[0100] may be coupled via the bus

[0102] to a display

[0112] , such as a cathode ray tube (CRT), Liquid crystal Display (LCD), Light Emitting Diode (LED) display, Organic LED (OLED) display, etc. for displaying information to a computer user. An input device

[0114] , including alphanumeric and other keys, touch screen input means, etc. may be coupled to the bus

[0102] for communicating information and command selections to the processor

[0104] , Another type of user input device may be a cursor controller

[0116] , such as a mouse, a trackball, or cursor direction keys, for communicating direction information and command selections to the processor

[0104] , and for controlling cursor movement on the display

[0112] , The input device typically has two degrees of freedom in two axes, a first axis (e.g., x) and a second axis (e.g., y), that allow the device to specify positions in a plane.

[0046] The computing device

[0100] may implement the techniques described herein using customized hard-wired logic, one or more ASICs or FPGAs, firmware and / or program logic which in combination with the computing device

[0100] causes or programs the computing device

[0100] to be a special-purpose machine. According to one implementation, the techniques herein areperformed by the computing device

[0100] in response to the processor

[0104] executing one or more sequences of one or more instructions contained in the main memory

[0106] , Such instructions may be read into the main memory

[0106] from another storage medium, such as the storage device

[0110] , Execution of the sequences of instructions contained in the main memory

[0106] causes the processor

[0104] to perform the process steps described herein. In alternative implementations of the present disclosure, hard-wired circuitry may be used in place of or in combination with software instructions.

[0047] The computing device

[0100] also may include a communication interface

[0118] coupled to the bus

[0102] , The communication interface

[0118] provides a two-way data communication coupling to a network link

[0120] that is connected to a local network

[0122] , For example, the communication interface

[0118] may be an integrated services digital network (ISDN) card, cable modem, satellite modem, or a modem to provide a data communication connection to a corresponding type of telephone line. As another example, the communication interface

[0118] may be a local area network (LAN) card to provide a data communication connection to a compatible LAN. Wireless links may also be implemented. In any such implementation, the communication interface

[0118] sends and receives electrical, electromagnetic or optical signals that carry digital data streams representing various types of information.

[0048] The computing device

[0100] can send messages and receive data, including program code, through the network(s), the network link

[0120] and the communication interface

[0118] , In the Internet example, a server

[0130] might transmit a requested code for an application program through the Internet

[0128] , the ISP

[0126] , the local network

[0122] , host

[0124] and the communication interface

[0118] , The received code may be executed by the processor

[0104] as it is received, and / or stored in the storage device

[0110] , or other non-volatile storage for later execution.

[0049] The computing device

[0100] encompasses a wide range of electronic devices capable of processing data and performing computations. Examples of the computing device

[0100] include, but are not limited only to, personal computers, laptops, tablets, smartphones, servers, and embedded systems. The devices may operate independently or as part of a network and can perform a variety of tasks such as data storage, retrieval, and analysis. Additionally, the computing device

[0100] may include peripheral devices, such as monitors, keyboards, and printers, as well as integrated components within larger electronic systems, showcasing their versatility in various technological applications.

[0050] Referring to FIG. 2, an exemplary block diagram of a system [200a] for managing bandwidth parts in a wireless communication network

[0200] , is shown, in accordance with the exemplary implementations of the present disclosure. The wireless communication network

[0200] comprises the system [200a] of the present disclosure, at least one network node

[0210] and at least one user equipment (UE)

[0208] ,

[0051] The system [200a] comprises at least one configuration unit

[0202] , at least one transceiver unit

[0204] , and at least one selection unit

[0206] , Also, all of the components / units of the communication system

[0200] and system [200a] are assumed to be connected to each other unless otherwise indicated below. As shown in FIG. 2, all units shown within the system should also be assumed to be connected to each other. Also, in FIG. 2, only a few units are shown; however, the communication system

[0200] and system [200a] may comprise multiple such units or the system [200a] may comprise any such numbers of said units, as required to implement the features of the present disclosure. Further, in an implementation, the system [200a] may be present in a user equipment (UE)

[0208] (such as, a user device) to implement the features of the present disclosure. The system [200a] may be a part of the UE

[0208] or may be independent of but in communication with the UE

[0208] , In another implementation, the system [200a] may reside in a server or a network entity. In yet another implementation, the system [200a] may reside partly in the server / network entity and partly in the UE

[0208] ,

[0052] The system [200a] is configured for managing bandwidth parts in a wireless communication network

[0200] , with the help of the interconnection between the components / units of the system [200a],

[0053] Further, in accordance with the present disclosure, it is to be acknowledged that the functionality described for the various components / units can be implemented interchangeably. While specific embodiments may disclose a particular functionality of these units for clarity, it is recognized that various configurations and combinations thereof are within the scope of the disclosure. The functionality of specific units as disclosed in the disclosure should not be construed as limiting the scope of the present disclosure. Consequently, alternative arrangements and substitutions of units, provided they achieve the intended functionality described herein, are considered to be encompassed within the scope of the present disclosure.

[0054] The system [200a] comprises the configuration unit

[0202] connected to the network node

[0210] (such as a gNodeB in the 5G network) in the wireless communication network

[0200] , The configuration unit

[0202] is further connected to the user equipment (UE). Herein, the configuration unit

[0202] is configured to configure, for the UE

[0208] , a first bandwidth part (BWP), and a second BWP.

[0055] In an implementation, each BWP may represent a specific section of an available frequency spectrum (a range of electromagnetic frequencies for transmitting signals). Further, the utilization of first BWP and the second BWP facilitates in optimizing bandwidth utilization, and adjust to various network conditions. Herein, the allocation of frequency spectrum is decided based on current data demands of the UE

[0208] to ensure better Quality of Service (QoS) and enhance power efficiency.

[0056] Further, the first BWP is a default BWP for the UE

[0208] , In an embodiment, the default BWP is used by the UE

[0208] on start-up of the UE

[0208] , Herein, the start-up of the UE

[0208] may refer to a powering on of the UE

[0208] , or to an initialization of one or more modules of the UE

[0208] that causes the UE

[0208] to attempt to connect with wireless communication interfaces. Further, for establishing the connection, the UE

[0208] may attempt to locate a nearby network node

[0210] (such as gNodeB).

[0057] In an implementation, the default bandwidth or the first BWP is selected by the UE

[0208] based on one or more pre-configured parameters such as a power saving mode activated in the UE

[0208] or other known in the state of art.

[0058] Further, the second BWP is an active BWP. The active BWP is used by the UE

[0208] subsequent to the use of the default BWP. Furthermore, the active BWP is selected, at the UE

[0208] , by the selection unit

[0206] , Specifically, the selection unit

[0206] is configured to make a switch, at the UE

[0208] , from the default BWP to the active BWP. In an event, the UE

[0208] successfully establishes communication using the default BWP (the first BWP), the UE

[0208] then may switch to the second BWP, which becomes the active BWP. The second BWP is configured to support the exchange of data or control messages between the UE

[0208] and the network node

[0210] using the first BWP. Further, it may be noted that the second BWP may operate on a different portion of the frequency spectrum, depending on the needs and conditions of the communication network

[0200] , For example, the second BWP may offer a wider bandwidth or may offer anarrower bandwidth, which may depend on factors such as Quality of service (QoS) requirements, power optimization of UE

[0208] , and an adaptability in changing traffic demands of the UE

[0208] ,

[0059] Further, the first BWP, and the second BWP are configured based on a set of configuration data. Herein, the set of configuration data comprises downlink control information (DCI) messages. The DCI message is utilized for managing one or more BWPs and controlling communication between the UE

[0208] and the network node

[0210] , Further, the DCI message comprises BWP indicator data indicative of identities of one or more BWP that are configured to receive a signal from the UE

[0208] therethrough. Herein, the DCI message is utilized to schedule both downlink and uplink transmissions between the UE

[0208] and the network node

[0210] , Further, the BWP indicator may refer to the identities of one or more BWPs that are to be utilized by the UE

[0208] for receiving signals from the network node

[0210] , Further, the BWP indicator may allow the communication network

[0200] to flexibly assign different parts of the frequency spectrum to the UE

[0208] based on real-time network conditions, traffic loads, and QoS requirements. For example, the BWP indicator data is in the form of BWP-Id. In an exemplary implementation, the BWP-Id has a size of 2 bits. The UE

[0208] registers the BWP-Id and the BWP- Id are the ones on which the UE

[0208] may transmit.

[0060] In an implementation, the BWP indicator is timely updated in order to ensure that the UE

[0208] operates on the most suitable BWP based on the current communication needs of the UE

[0208] ,

[0061] The system [200a] further comprises the transceiver unit

[0204] connected to the UE

[0208] , Herein, the transceiver unit

[0204] configured to transmit a first scheduling request (SR) on the second BWP. Herein, the SR refers to a request transmitted by the UE

[0208] to inform the network node

[0210] (such as gNodeB), that the UE

[0208] may require one or more resources to gain an access to a control channel for uplink or downlink communication. The control channels are responsible for the management of data transmission between the UE

[0208] and the network node

[0210] (such as gNodeB). Further, the control channel is selected from at least one of a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Control Channel (PUCCH), and a Physical Uplink Shared Channel (PUSCH).

[0062] In an implementation, the PDCCH is responsible for carrying scheduling information for both the downlink and uplink communication. The PDCCH includes the DCI message that specifies a process for the UE

[0208] to receive downlink data or transmit uplink data.

[0063] In another implementation, the PDSCH is used to deliver downlink data to the UE

[0208] , After receiving the DCI message on the PDCCH, the UE

[0208] may decode the PDSCH to receive the actual data transmitted from the communication network

[0200] , The PDSCH carries user data and other higher-layer protocol information.

[0064] In yet another implementation, the PUCCH carries uplink control information from the UE

[0208] to the communication network

[0200] , such as hybrid automatic repeat request (HARQ) feedback, acknowledgments (ACK / NACK), and SR.

[0065] In yet another implementation, the PUSCH is used by the UE

[0208] to transmit uplink data after receiving scheduling information on the PDCCH. The PUSCH is required, when the actual user data is sent from the UE

[0208] to the communication network

[0200] , The PUSCH is also involved in retransmissions for error correction via HARQ.

[0066] In one embodiment, in order to transmit the first SR on the second BWP, the transceiver unit

[0204] is configured to transmit one first SR at a beginning of the predefined time period. In another embodiment, in order to transmit the first SR on the second BWP, the transceiver unit

[0204] is configured to transmit a plurality of first SRs during the predefined time period.

[0067] In an event, the UE

[0208] transmits the first SR at the beginning of the time period, the transceiver unit

[0204] may further attempt to retransmit the first SR a plurality of times within the predefined time period. The transmitting of the plurality of instances of the first SR may improve the likelihood of successful resource allocation, particularly in situations where the communication network

[0200] is congested or slow to respond.

[0068] Further, the system [200a] comprises the selection unit

[0206] , In an implementation, the selection unit

[0206] may assist in switching BWP in response to the conditions of the communication network

[0200] ,

[0069] Thereafter, in response to absence of a response, at the UE

[0208] corresponding to the transmitted first SR within a predefined time period, the selection unit

[0206] is configured to select, at the UE

[0208] , the first BWP. In other words, the UE

[0208] is configured to wait for the duration of the predefined time period for the response. The response may be a signal, or instruction, or acknowledgement from the network node that the first SR was transmitted to, indicative of grant of access to the UE

[0208] of the control channel. The grant of access may allow the UE

[0208] to latch onto the network node for uplink and / or downlink. In an event where, during the predefined time period, the UE

[0208] does not receive the response, the selection unit

[0206] is configured to switch the UE

[0208] to the first BWP. Selecting the first BWP causes the UE

[0208] to scan the first BWP for access to the control channel for uplink or downlink.

[0070] The predefined time period mentioned herein may refer to an interval within which the network node

[0210] (gNodeB) is expected to respond to the SR transmitted by the UE

[0208] , Further, the time period is determined by network configurations may vary based on traffic type, QoS requirements, and other factors. In implementations, the predefined time period may vary from 10 milliseconds to 100 milliseconds.

[0071] In an embodiment, the UE

[0208] waits a predefined time period in the first BWP as well. However, in some embodiments, the transceiver unit of the UE

[0208] may be configured to transmit a second SR on the first BWP, similar to transmission of the first SR.

[0072] In an implementation, the absence of response to the first SR may occur due to one or more reasons which may include network congestions (where the gNodeB is unable to allocate resources to the UE

[0208] promptly), or transmission errors that may cause the SR or the corresponding response to the SR to be lost, or poor signal conditions, where the UE

[0208] is unable to maintain a reliable connection with the communication network

[0200] ,

[0073] Further, it is to be noted that if no response is received within the predefined time, the UE

[0208] switches back to the first BWP as the first BWP is the default BWP and is already associated with initial connections of UE

[0208] to the communication network

[0200] and is often more reliable that second BWP in terms of coverage and response times.

[0074] Once the UE

[0208] switches back to first BWP, the transceiver unit

[0204] retransmits the second SR on the first BWP to re-initiate the request for resources. However, in case the secondSR transmitted on the first BWP also fails to obtain a response from the network node

[0210] within the predefined time period, then in one aspect, the selection unit

[0206] may direct the UE

[0208] to switch back to the second BWP to retry communication.

[0075] In another aspect, the selection unit

[0206] may initiate a Random Access Channel (RACH) request to re-establish a connection with the network node

[0210] (gNodeB). Herein, the RACH request is a procedure for the UE

[0208] to establish a connection with the network node

[0210] when the regular communication channels are unavailable. In one aspect, the RACH is used for an initial access, in an event the UE

[0208] is attempting to connect to the network node

[0210] for the first time. In another aspect, the RACH is used in re-establishment of communication when the UE

[0208] loses connection with the network node

[0210] ,

[0076] It is to be noted that the RACH request is used as a last option, if both the first SR and the second SR, respectively, fails to receive a response. The RACH further facilitates the UE

[0208] with a way to locate the network node

[0210] and initiate a new connection or re-synchronize communication.

[0077] Further, to configure, at the UE

[0208] , the first bandwidth part (BWP), and the second BWP the transceiver unit

[0204] connected to the network node

[0210] is configured to receive, from the UE

[0208] a random-access channel (RACH) request.

[0078] Thereafter, the transceiver unit

[0204] is configured to transmit, to the UE

[0208] , in response to the received RACH request, the configuration data. Post receiving the RACH request the transceiver unit

[0204] at the network node

[0210] (such as gNodeB) sends the necessary configuration data to the UE

[0208] , Herein, the configuration data comprises at least identities of the first BWP, and the second BWP. Further, the identities of first BWP and the second BWP may refer to a specific frequency range allocated to the said first BWP and the second BWP, respectively. In an example, the first BWP may reflect a narrow bandwidth used for low-power or initial communication. Further, the second BWP may reflect a wider bandwidth designed for higher data throughput or specific QoS requirements. The configuration data may further include the DCI message and alike known to a person skilled in the art.

[0079] Next, the selection unit

[0206] connected to the UE

[0208] is configured to register the configuration data. In an event, the UE

[0208] receives the configuration data from the gNodeB,then the selection unit

[0206] within the UE

[0208] may registers the configuration data by firstly ensuring that the UE

[0208] is correctly configured to operate on the identified bandwidth parts (such as the first BWP and the second BWP). Further, the selection unit

[0206] further manages the switching between the first BWP and the second BWP based on predefined conditions, such as network load, power-saving requirements, or specific data demands.

[0080] In an implementation, the BWP switching refers to activating an inactive BWP and deactivating an active BWP at a time. The BWP switching may be controlled by the PDCCH indicating a downlink assignment or an uplink grant, by the bwp-InactivityTimer, by RRC signalling, or by the MAC entity itself upon initiation of Random Access procedure. Upon RRC (re-)configuration of firstActiveDownlinkBWP-Id and / or firstActiveUplinkBWP-Id for SpCell or activation of an SCell, the DL BWP and / or UL BWP indicated by firstActiveDownlinkBWP-Id and / or firstActiveUplinkBWP-Id respectively, is active without receiving PDCCH indicating a downlink assignment or an uplink grant. The active BWP for the UE is indicated by either RRC or PDCCH.

[0081] For the UE configured with the BWPs, the system

[0200] may be configured to check if a BWP is activated. If the BWP is activated, the system

[0200] may be configured to:■ transmit on UL-SCH on the BWP;■ transmit on RACH on the BWP, if PRACH occasions are configured;■ monitor the PDCCH on the BWP;■ transmit PUCCH on the BWP, if configured;■ report CSI for the BWP;■ transmit SRS on the BWP, if configured;■ receive DL-SCH on the BWP;■ (re-)initialize any suspended configured uplink grants of configured grant Type 1 on the active BWP according to the stored configuration.

[0082] However, if the system

[0200] determines that the BWP is deactivated, the system

[0200] may be configured to:■ not transmit on UL-SCH on the BWP;■ not transmit on RACH on the BWP;■ not monitor the PDCCH on the BWP;■ not transmit PUCCH on the BWP;■ not report CSI for the BWP;■ not transmit SRS on the BWP;■ not receive DL-SCH on the BWP;■ clear any configured downlink assignment and configured uplink grant of configured grant Type 2 on the BWP;■ suspend any configured uplink grant of configured grant Type 1 on the inactive BWP.

[0083] In another implementation, if the system

[0200] receives a PDCCH for BWP switching at the UE

[0208] , the system

[0208] may be configured to check if there is no ongoing Random Access procedure associated with the UE

[0208] , or if the ongoing Random Access procedure associated with the UE

[0208] is successfully completed. Thereafter, the system

[0200] may be configured to perform BWP switching to a BWP indicated by the PDCCH.

[0084] Referring to FIG. 3, an exemplary method flow diagram

[0300] for managing bandwidth parts in a wireless communication network

[0200] , in accordance with exemplary implementations of the present disclosure, is shown. In an implementation the method

[0300] is performed by the system [200a], Further, in an implementation, the system [200a] may be present in a server device to implement the features of the present disclosure.

[0085] Also, as shown in FIG. 3, the method

[0300] starts at step

[0302] ,

[0086] At step

[0304] , the method

[0300] comprises configuring, by the configuration unit

[0202] connected to the network node

[0210] in the wireless communication network

[0200] , and the user equipment (UE), for the UE

[0208] , a first bandwidth part (BWP), and a second BWP. Herein, the first BWP is a default BWP for the UE

[0208] , wherein the default BWP is used by the UE

[0208] on start-up of the UE

[0208] , Further, the second BWP is an active BWP, wherein the active BWP is used by the UE

[0208] after selecting the active BWP subsequent to the default BWP.

[0087] Further, the first BWP, and the second BWP are configured based on a set of configuration data. Herein, the set of configuration data comprises downlink control information (DCI), wherein the DCI comprises BWP indicator data indicative of identities of one or more BWP that is configured to receive a signal from the UE

[0208] ,

[0088] At step

[0306] , the method

[0300] comprises transmitting, by the transceiver unit

[0204] connected to the UE

[0208] , a first scheduling request (SR) on the second BWP. Herein, the first SR relates to a request by the UE

[0208] to gain access to a control channel. Further, the control channel is selected from at least one of a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Control Channel (PUCCH), and a Physical Uplink Shared Channel (PUSCH).

[0089] Further, the method

[0300] comprises the step of transmitting the first SR on the second BWP comprises at least one of transmitting, by the transceiver unit

[0204] , one first SR at a beginning of the predefined time period, and transmitting, by the transceiver unit

[0204] , a plurality of first SRs during the predefined time period.

[0090] At step

[0308] , in response to absence of a response corresponding to the transmitted first SR within a predefined time period, the method

[0300] comprises selecting, by a selection unit

[0206] , at the UE

[0208] , the first BWP, and transmitting, by the transceiver unit

[0204] , a second SR on the first BWP.

[0091] The method

[0300] further explains that in response to absence of a response corresponding to the transmitted second SR within a predefined time period, the method

[0300] comprises at least one of selecting, by the selection unit

[0206] , at the UE

[0208] , the second BWP, and transmitting, by the transceiver unit

[0204] , from the UE

[0208] , a random access channel (RACH) request to locate a network node

[0210] ,

[0092] The method

[0300] further explains the step of configuring, at the UE

[0208] , the first bandwidth part (BWP), and the second BWP, comprising receiving, by a transceiver unit

[0204] connected to the network node

[0210] , from the UE

[0208] a random-access channel (RACH) request. Further, transmitting, by the transceiver unit

[0204] , to the UE

[0208] , in response to the received RACH request, the configuration data, where the configuration data comprises at least identities of the first BWP, and the second BWP. Further, registering, by the selection unit

[0206] connected to the UE

[0208] , the configuration data.

[0093] The method

[0300] herein terminates at step

[0310] ,

[0094] Referring to FIG. 4, an exemplary flow diagram

[0400] for managing bandwidth parts in a wireless communication network

[0200] , in accordance with exemplary implementations of the present disclosure is shown.

[0095] At step 402, the network node

[0210] (gNB) transmits a radio resource control (RRC) configuration message to the UE

[0208] , Herein, the message may include one or more configurational parameters such as the SR resource for the active bandwidth (i.e., second bandwidth) and the default bandwidth (i.e., first bandwidth). Further the one or more configurational parameters may include the PDCCH decoder timer configuration, which refers to a time period accessed by the UE

[0208] to decode the PDCCH on the active BWP. The primary purpose of the RRC configuration message is to reconfigure the UE

[0208] with updated bandwidth settings, which may include specifying resources and timing parameters for SR and PDCCH decoding.

[0096] Referring to FIG. 5 an exemplary flow diagram

[0500] for managing bandwidth parts in a wireless communication network

[0200] , in accordance with exemplary implementations of the present disclosure is shown.

[0097] At step 502, in an event, post reconfiguration, the UE

[0208] may not receive the response from the gNB, then the UE

[0208] may retry the SR for N (may include any natural number) number of attempts. In such an event, the UE

[0208] switches to the default BWP (i.e., first BWP) and continuously retries the SR up to a maximum allowed retries (N).

[0098] At step 504, post exhausting the SR entries (N times), the UE

[0208] switches back to the default BWP (i.e., first BWP). Thereafter, the UE

[0208] is configured to wait for a predefined duration at the default BWP in order to gain access to a control channel (i.e., the PDCCH).

[0099] In an embodiment, the predefined duration may be configured on a timer. In an embodiment, the timer may be configured, such that the timer is activated at a first instance of transmittance of the first SR, by the UE. Once the predefined duration is complete, the timer may be configured to signal the UE

[0208] that the predefined duration is exhausted.

[0100] Referring to FIG. 6, an exemplary flow diagram

[0600] for managing bandwidth parts in a wireless communication network

[0200] , in accordance with exemplary implementations of the present disclosure is shown.

[0101] At step 602, the UE

[0208] sends a SR over the active BWP (i.e., second bandwidth). Further, the UE

[0208] may not receive a PDCCH transmission during the configured decode timer window.

[0102] At step 604, in an event, the PDCCH decode timer window expires without receiving a PDCCH, then in such an event, the UE

[0208] automatically switches to the default BWP (i.e., first BWP). Further, the UE

[0208] attempts to decode the PDCCH on the default BWP, trying to establish further communication.

[0103] The present disclosure further discloses a user equipment (UE) comprising a memory. Further the UE

[0208] comprises a processor coupled to the memory. Further, the processor is configured to configure, for the UE

[0208] , a first bandwidth part (BWP), and a second BWP, wherein the first BWP, and the second BWP are configured based on a set of configuration data. Further, the processor is configured to transmit a first scheduling request (SR) on the second BWP. Further, in response to absence of a response, at the processor, corresponding to the transmitted first SR within a predefined time period, the processor is configured to select, at the UE

[0208] , the first BWP, and transmit a second SR on the first BWP.

[0104] The present disclosure further provides a non-transitory computer-readable storage medium, storing instructions for managing bandwidth parts in a wireless communication network, the storage medium comprising executable code which, when executed by one or more units of a system, causes: a configuration unit connected to a network node in the wireless communication network, and a user equipment (UE), to configure, for the UE, a first bandwidth part (BWP), and a second BWP, wherein the first BWP, and the second BWP are configured based on a set of configuration data; and a transceiver unit connected to the UE, to transmit a first scheduling request (SR) on the second BWP, wherein, in response to absence of a response, at the UE, corresponding to the transmitted first SR within a predefined time period, further causes: a selection unit to select, at the UE, the first BWP; and the transceiver unit to transmit a second SR on the first BWP.

[0105] As is evident from the above, the present disclosure provides a technically advanced solution for managing bandwidth parts in a wireless communication network. The present solution results in switching of UE earlier than the maximum number of allowable attempts prescribed by the network. This results in saving time for servicing UE and improves user experience and quality of service as transition time between an active BWP and an initial or default BWP is reduced.Further, the present invention provides a solution that improves availability of UE to the network. Furthermore, the present invention prevents frequent re-latching of UE to the network, which happens when UE exhausts the maximum allowable number of attempts prescribed by the network.

[0106] While considerable emphasis has been placed herein on the disclosed implementations, it will be appreciated that many implementations can be made and that many changes can be made to the implementations without departing from the principles of the present disclosure. These and other changes in the implementations of the present disclosure will be apparent to those skilled in the art, whereby it is to be understood that the foregoing descriptive matter to be implemented is illustrative and non-limiting.

Claims

We Claim:

1. A method [300] for managing bandwidth parts in a wireless communication network [200], the method [300] comprising:- configuring, by a configuration unit [202] connected to a network node [210] in the wireless communication network [200], and a user equipment (UE), for the UE [208], a first bandwidth part (BWP), and a second BWP, wherein the first BWP, and the second BWP are configured based on a set of configuration data; and- transmitting, by a transceiver unit [204] connected to the UE [208], a first scheduling request (SR) on the second BWP, wherein, in response to absence of a response, at the UE [208], corresponding to the transmitted first SR within a predefined time period, the method [300] comprises:- selecting, by a selection unit [206], at the UE [208], the first BWP; and- transmitting, by the transceiver unit [204], a second SR on the first BWP.

2. The method [300] as claimed in claim 1, wherein,- the first BWP is a default BWP for the UE [208], wherein the default BWP is used by the UE [208] on start-up of the UE [208], and- the second BWP is an active BWP, wherein the active BWP is used by the UE [208] subsequent to the use of the default BWP, and wherein the active BWP is selected, at the UE [208], by the selection unit [206],3. The method [300] as claimed in claim 1, wherein, in response to absence of a response corresponding to the transmitted second SR within a predefined time period, the method [300] comprises at least one of:- selecting, by the selection unit [206], at the UE [208], the second BWP; and- transmitting, by the transceiver unit [204], from the UE [208], a random-access channel (RACH) request to another network node in the wireless communication network [200],4. The method [300] as claimed in claim 1, wherein the set of configuration data comprises downlink control information (DCI), wherein the DCI comprises BWP indicator dataindicative of identities of one or more BWP that is configured to receive a signal from the UE [208],5. The method [300] as claimed in claim 4, wherein the step of configuring, at the UE [208], the first bandwidth part (BWP), and the second BWP comprises:- receiving, by a transceiver unit [204] connected to the network node [210], from the UE [208] a random-access channel (RACH) request;- transmitting, by the transceiver unit [204], to the UE [208], in response to the received RACH request, the configuration data, wherein the configuration data comprises at least identities of the first BWP, and the second BWP; and- registering, by the selection unit [206] connected to the UE [208], the configuration data.

6. The method [300] as claimed in claim 1, wherein the step of transmitting the first SR on the second BWP comprises at least one of:- transmitting, by the transceiver unit [204], one first SR at a beginning of the predefined time period; and- transmitting, by the transceiver unit [204], a plurality of first SRs during the predefined time period.

7. The method [300] as claimed in claim 1, wherein the first SR and the second SR relate to a request by the UE [208] to gain access to a control channel, and wherein the control channel is selected from at least one of a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Control Channel (PUCCH), and a Physical Uplink Shared Channel (PUSCH).

8. A system [200a] for managing bandwidth parts in a wireless communication network [200], the system [200a] comprising:- a configuration unit [202] connected to a network node [210] in the wireless communication network [200], and a user equipment (UE), the configuration unit [202] configured to configure, for the UE [208], a first bandwidth part (BWP), and a second BWP, wherein the first BWP, and the second BWP are configured based on a set of configuration data; and- a transceiver unit [204] connected to the UE [208], the transceiver unit [204] configured to transmit a first scheduling request (SR) on the second BWP; and- a selection unit [206], wherein, in response to absence of a response, at the UE [208], corresponding to the transmitted first SR within a predefined time period:- the selection unit [206] is configured to select, at the UE [208], the first BWP; and- the transceiver unit [204] is configured to transmit a second SR on the first BWP.

9. The system [200a] as claimed in claim 8, wherein,- the first BWP is a default BWP for the UE [208], wherein the default BWP is used by the UE [208] on start-up of the UE [208], and- the second BWP is an active BWP, wherein the active BWP is used by the UE [208] subsequent to the use of the default BWP, and wherein the active BWP is selected, at the UE [208], by the selection unit [206],10. The system [200a] as claimed in claim 8, wherein, in response to absence of a response corresponding to the transmitted second SR within a predefined time period, at least one of- the selection unit [206] is configured to select, at the UE [208], the second BWP; and- the transceiver unit [204] is configured to transmit, from the UE [208], a randomaccess channel (RACH) request to another network node in the wireless communication network [200],11. The system [200a] as claimed in claim 8, wherein the set of configuration data comprises downlink control information (DCI), wherein the DCI comprises BWP indicator data indicative of identities of one or more BWP that is configured to receive a signal from the UE [208] therethrough.

12. The system [200a] as claimed in claim 11, wherein, to configure, at the UE [208], the first bandwidth part (BWP), and the second BWP:- the transceiver unit [204] connected to the network node [210] is configured to receive, from the UE [208] a random-access channel (RACH) request;- the transceiver unit [204] is configured to transmit, to the UE [208], in response to the received RACH request, the configuration data, wherein the configuration data comprises at least identities of the first BWP, and the second BWP; and- the selection unit [206] connected to the UE [208] is configured to register the configuration data.

13. The system [200a] as claimed in claim 8, wherein, to transmit the first SR on the second BWP, at least one of- the transceiver unit [204] is configured to transmit one first SR at a beginning of the predefined time period; and- the transceiver unit [204] is configured to transmit a plurality of first SRs during the predefined time period.

14. The system [200a] as claimed in claim 8, wherein the first SR and the second SR relate to a request by the UE [208] to gain access to a control channel, and wherein the control channel is selected from at least one of a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Control Channel (PUCCH), and a Physical Uplink Shared Channel (PUSCH).

15. A user equipment (UE) comprising:- a memory;- a processor coupled to the memory, wherein the processor is configured to: configure, for the UE [208], a first bandwidth part (BWP), and a second BWP, wherein the first BWP, and the second BWP are configured based on a set of configuration data; and transmit a first scheduling request (SR) on the second BWP, wherein, in response to absence of a response, at the processor, corresponding to the transmitted first SR within a predefined time period, the processor is configured to: select, at the UE [208], the first BWP; and transmit a second SR on the first BWP.

16. A non-transitory computer-readable storage medium, storing instructions for managing bandwidth parts in a wireless communication network [200], the storage medium comprising executable code which, when executed by one or more units of a system, causes:- a configuration unit [202] connected to a network node [210] in the wireless communication network [200], and a user equipment (UE) [208], to configure, for the UE [208], a first bandwidth part (BWP), and a second BWP, wherein the first BWP, and the second BWP are configured based on a set of configuration data; and - a transceiver unit [204] connected to the UE [208], to transmit a first scheduling request (SR) on the second BWP, wherein, in response to absence of a response, at the UE [208], corresponding to the transmitted first SR within a predefined time period, further causes: a selection unit [206] to select, at the UE [208], the first BWP; and the transceiver unit [204] to transmit a second SR on the first BWP.

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