Method and system for maintaining synchronization between user equipment and base station in wireless communication network

Abstract

A system and method for managing bandwidth portion (BWP) configurations are provided. The method includes determining, by a base station (BS) communicating with a user equipment (UE), that BWP configurations from a plurality of BWPs are to be shared with the UE; and transmitting, by the BS, the BWP configuration in one of downlink control information (DCI) signaling or Layer 1 (L1) signaling using one of a plurality of predefined operations such that the connection between the UE and the BS is maintained.

Description

Technical Field

[0001] This disclosure relates generally to wireless communications, and in particular to methods and systems for maintaining synchronization between a user equipment (UE) and a base station (BS) in a wireless communication network. Background Technology

[0002] The fifth-generation (5G) standard introduces the concept of Bandwidth Parts (BWPs), which allows user devices (UEs) and networks (NWs) to communicate using specific, smaller bandwidth areas instead of the fully deployed bandwidth. These areas are identified by Bandwidth Part Identifiers (BWP IDs). The NW can dynamically change the allocated BWPs across many BWPs based on numerous conditions, including the available data to be transmitted. A BWP change can be indicated via one of three messages: L1 (based on DCI), L2 (MAC CE), or L3 (RRC reconfiguration). The NW will use an L1-based (e.g., DCI) indication to change from one BWP to a target BWP to reduce overall latency and ensure minimal gaps in data exchange.

[0003] BWP handover based on downlink control information (DCI) was introduced in 3GPP Release 15 and has since been deployed by many network operators worldwide. When a false alarm for a BWP handover DCI occurs due to blind decoding, or if the UE misses the DCI indicating a BWP change (possibly due to low signal strength, interference, or other factors), a mismatch occurs between the UE's BWP ID and the network, preventing communication between them.

[0004] This mismatch leads to Radio Resource Reset (RRE), during which the UE and the network must resynchronize. However, since RRE can take 1 to 3 seconds (depending on parameters such as the Diameter Signaling Router (DSR) maximum failure and the maximum Random Access Channel (RACH) failure count), this delay poses a significant problem. Summary of the Invention

[0005] Technical issues Currently, the 3GPP specification has a key limitation on the DCI used for BWP handover, outlined in Section 12 of 3GPP specification 38.213. According to the solution, the UE is only expected to detect a DCI format with a BWP indicator field for uplink or downlink BWP change if the corresponding Physical Downlink Control Channel (PDCCH) is received within the first three symbols of the time slot. However, this is insufficient to avoid BWP mismatch between the UE and the network. Furthermore, due to the inherent complexity of the DCI decoding process, although the risk of mismatch can be reduced, this problem cannot be completely solved solely through a UE-side solution.

[0006] Furthermore, in the current 3GPP specification, BWP handover can be triggered by any DCI format (0_1 / 0_2 or 1_1 / 1_2) decoded on any search space configured for the active BWP. This feature is enabled by default, making the PDCCH decoder susceptible to both false alarms and missed alarms.

[0007] Therefore, solutions are needed to address the aforementioned problems in communication networks.

[0008] Technical solution This summary is provided to introduce, in a simplified format, some features that will be further described in the specific embodiments of this disclosure. This summary is not intended to identify key or essential inventive concepts of this disclosure, nor is it intended to define the scope of this disclosure.

[0009] According to one aspect of this disclosure, a method for managing a bandwidth portion (BWP) configuration includes: a base station (BS) communicating with a user equipment (UE) determining that a BWP configuration from multiple BWPs will be shared with the UE; and the BS transmitting the BWP configuration in one of downlink control information (DCI) signaling or layer 1 (L1) signaling using one of multiple predefined operations, such that a connection between the UE and the BS is maintained.

[0010] According to one aspect of this disclosure, a method for managing a bandwidth portion (BWP) configuration includes: a user equipment (UE) communicating with a base station (BS) receiving a BWP configuration in one of downlink control information (DCI) signaling or layer 1 (L1) signaling, wherein the BWP configuration indicates a target BWP for the UE; and the UE verifying the received BWP configuration such that the connection between the UE and the BS is maintained.

[0011] According to one aspect of this disclosure, a system for managing a bandwidth portion (BWP) configuration includes: at least one memory storing one or more instructions; and at least one processor configured to execute one or more instructions, wherein the one or more instructions, when executed by the at least one processor, cause the system to: determine that a BWP configuration from multiple BWPs will be shared with a user equipment (UE); and transmit the BWP configuration in one of downlink control information (DCI) signaling or layer 1 (L1) signaling using one of multiple predefined operations, thereby maintaining the connection between the UE and the BS.

[0012] According to one aspect of this disclosure, a system for managing a bandwidth portion (BWP) configuration includes: at least one memory storing one or more instructions; at least one processor configured to execute one or more instructions, wherein the one or more instructions, when executed by the at least one processor, cause the system to: receive a BWP configuration in one of downlink control information (DCI) signaling or layer 1 (L1) signaling, wherein the BWP configuration indicates a target BWP for a user equipment (UE); and verify the received BWP configuration such that a connection between the UE and the BS is maintained.

[0013] To further illustrate the advantages and features of this disclosure, a more specific description of the disclosure will be presented with reference to specific embodiments of the disclosure shown in the accompanying drawings. It should be understood that these drawings depict only typical embodiments of the disclosure and should not be considered as limiting the scope of the disclosure. The disclosure will be described and explained with additional features and details in conjunction with the accompanying drawings. Attached Figure Description

[0014] The above and other aspects and features of specific embodiments of this disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which: Figure 1 Examples of wireless communication networks with supported managed bandwidth portion (BWP) configurations according to one or more embodiments of the present disclosure are shown; Figure 2 A flowchart depicting a method for providing a bandwidth portion (BWP) configuration to a user equipment (UE) according to one or more embodiments of the present disclosure is shown; Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A signal flow diagram for managing BWP configuration according to one or more embodiments of the present disclosure is shown; Figure 8 A flowchart depicting a method for managing BWP configuration at a UE according to one or more embodiments of the present disclosure is shown; Figure 9 A block diagram of a physical downlink control channel (PDCCH) module according to one or more embodiments of the present disclosure is shown; Figure 10 A signal flow diagram for managing BWP configuration at the UE is shown according to one or more embodiments of the present disclosure; and Figure 11 A block diagram of a system for managing BWP configuration in a wireless communication network according to one or more embodiments of the present disclosure is shown.

[0015] Furthermore, those skilled in the art will understand that the elements in the accompanying drawings are shown for simplicity and may not necessarily be drawn to scale. For example, flowcharts illustrate the method according to the most prominent operations involved to aid in understanding various aspects of this disclosure. Additionally, regarding the construction of the apparatus, one or more components of the apparatus may have already been indicated in the drawings using conventional symbols, and the drawings may show only specific details relevant to understanding embodiments of this disclosure so as not to obscure details readily understood by those skilled in the art from the description herein. Detailed Implementation

[0016] To facilitate an understanding of the principles of this disclosure, reference will now be made to the embodiments illustrated in the accompanying drawings, and these embodiments will be described using specific language. However, it should be understood that this is not intended to limit the scope of the disclosure, and such changes and further modifications to the systems shown, as well as such further applications of the principles of the disclosure as illustrated therein, are considered to be commonly apparent to those skilled in the art to which this disclosure pertains.

[0017] Those skilled in the art will understand that the foregoing general description and the following detailed description are for the purpose of interpreting this disclosure and not limiting it.

[0018] Throughout this specification, references to "aspect," "on the other hand," or similar language mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this disclosure. Therefore, throughout this specification, the phrases "in an embodiment," "in another embodiment," and similar language may, but not necessarily all, refer to the same embodiment.

[0019] The terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process or method that includes a list of operations includes not only those operations but may also include other operations not expressly listed or inherent to such process or method. Similarly, without further constraints, a list of one or more systems, subsystems, elements, structures, or components beginning with “comprising…” does not exclude the presence of other means or subsystems or elements or structures or components or additional means or subsystems or elements or structures or components.

[0020] The term "combination" and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether these elements are physically in contact with each other. The terms "send," "receive," and "communicate," and their derivatives, include both direct and indirect communication. The term "or" is an inclusive term meaning "and / or." The phrase "associated with" and its derivatives refer to including, being included in, interconnected with, containing, being contained within, connected to or connected with, combined to or combined with, able to communicate with, cooperate with, interleaved, juxtaposed, proximate, bound to or bound with, having, possessing the properties of, having a relationship to or with, etc. The term "controller" refers to any device, system, or part thereof that controls at least one operation. The functionality associated with any particular controller can be centralized or distributed, local or remote. The phrase "at least one of..." when used with a list of items indicates that different combinations of one or more of the listed items may be used, and that only one item from the list may be required. For example, "at least one of A, B, and C" includes any of the following combinations: A only, B only, C only, both A and B, both A and C, both B and C, and all of A, B, and C, and any variations thereof. As an additional example, the expression "at least one of a, b, or c" may refer to a only, b only, c only, both a and b, both a and c, both b and c, all of a, b, and c, or any variations thereof. Similarly, the term "set" refers to one or more. Therefore, a set of items can be a single item or a collection of two or more items.

[0021] Furthermore, the various functions described below may be implemented or supported by one or more computer programs, each computer program being formed by computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, associated data, or portions thereof suitable for implementation in appropriate computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of medium accessible by a computer, such as read-only memory (ROM), random access memory (RAM), hard disk drive, optical disc (CD), digital video disc (DVD), or any other type of storage. "Non-transitory" computer-readable media does not include wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transitory computer-readable media includes media that permanently store data and media that store and later rewrite data (such as rewritable optical discs or erasable memory devices).

[0022] Figure 1 Examples of wireless communication networks supporting BWP configuration management according to one or more embodiments of this disclosure are shown. Wireless communication network 100 may include one or more UEs 101, a core network 103, and one or more base stations 105. In some examples, wireless communication network 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-APro network, or a New Radio (NR) network, or a future network based on similar principles. In some examples, wireless communication network 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0023] One or more base stations 105 may be distributed throughout a geographic area to form a wireless communication network 100, and may be devices of different forms or with different capabilities. One or more base stations 105 and one or more UEs 101 may communicate wirelessly via one or more communication links 107. Each base station 105 provides a coverage area, over which one or more UEs 101 and base station 105 may establish one or more communication links 107. The coverage area may be an example of a geographic area where one of the base stations 105 and one of the UEs 101 can support signal communication according to one or more radio access technologies. The coverage area may include one or more of the primary cells (PCells) and / or secondary cells (Scells) belonging to a primary cell group (MCG) to which one of the UEs 101 is connected, and one or more of the primary and secondary cells (PSCells) and / or Scells belonging to a secondary cell group (SCG) to which the same UE 101 can be connected.

[0024] One or more UEs 101 may be distributed throughout the coverage area of ​​the wireless communication network 100, and each UE 101 may be stationary, mobile, or both at different times. One or more UEs 101 may be devices of different forms or with different capabilities.

[0025] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base transceiver station, radio base station, access point, radio transceiver, NodeB, evolved NodeB (eNB), next-generation NodeB or gNodeB (any of which may be referred to as gNB), home NodeB, home eNodeB or other suitable terms.

[0026] One or more UEs 101 may include or be referred to as mobile devices, wireless devices, remote devices, handheld devices, user devices, or some other suitable term, wherein "device" may also be referred to as a unit, station, terminal, or client, among other examples. One or more UEs 101 may also include or be referred to as personal electronic devices, such as cellular phones, personal digital assistants (PDAs), tablet computers, laptop computers, or personal computers. In some examples, one or more UEs 101 may include or be referred to as wireless local loop (WLL) stations, Internet of Things (IoT) devices, Internet of Everything (IoE) devices, or machine-type communication (MTC) devices, among other examples, which may be implemented in various objects such as appliances or vehicles, meters, and other examples. Furthermore, one or more UEs 101 may correspond to a UE with a single Subscriber Identity Module (SIM) or a UE with multiple SIMs.

[0027] like Figure 1 As shown, one or more UEs 101 described herein may be able to communicate with various types of devices, such as other UEs 101 that may sometimes act as relays, as well as base stations 105 and network equipment (including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, and other examples)). Furthermore, it should be noted that, although for illustrative purposes... Figure 1 Only two UEs 101 and two base stations 105 are depicted in the text, but the wireless communication system 100 may include additional UEs and base stations.

[0028] Figure 2 A flowchart depicting a method 200 (operation) for providing BWP configuration to a UE according to one or more embodiments of the present disclosure is shown. In one or more embodiments, such as Figure 2 The method 200 described herein can be executed by base station 105. Therefore, it has been combined with Figure 1 Explained Figure 2 .

[0029] like Figure 2 As shown, in operation 201, method 200 includes a BS 105 communicating with UE 101 determining a BWP configuration from multiple BWPs to be shared with UE 101. In an exemplary embodiment, the BWP configuration may be associated with an initial BWP, an initial downlink BWP, an initial uplink BWP, a first active BWP, a default downlink BWP, BWP handover, etc. In one or more embodiments, BS 105 may perform operation 201 according to techniques known to those skilled in the art.

[0030] In response to this determination, in operation 303, method 300 includes sending a BWP configuration in either Downlink Control Information (DCI) signaling or Layer 1 (L1) signaling using one of a plurality of predefined operations, thereby maintaining the connection between UE 101 and BS 105. Specifically, BS 105 may send the BWP configuration according to one of the predefined operations, which helps reduce false alarms, missed alarms, and / or delays when sending the BWP configuration. Therefore, the connection between UE 101 and BS 105 is maintained. (See also...) Figures 3 to 7 Several predefined operations were further defined. Figures 3 to 7 A signal flow diagram for providing BWP configuration to a UE according to one or more embodiments of the present disclosure is shown.

[0031] In one or more embodiments, such as Figure 3 As shown, one of the predefined operations may include mapping DCI signaling or L1 signaling to a predetermined search space in the Physical Downlink Control Channel (PDCCH). BS 105 may map DCI signaling or L1 signaling to a predetermined search space in the PDCCH. Specifically, BS 105 may use any of the available search spaces to send the BWP configuration. However, BS 105 also sends information associated with the predetermined search space to UE 101, enabling UE 101 to correctly decode the BWP configuration. In particular, the associated information helps UE 101 identify the predetermined search space.

[0032] Therefore, as Figure 3 As shown, in operation 301, UE 101 and base station 105 are in a radio resource control (RRC) connection state.

[0033] In operation 303, base station 105 sends an RRC reconfiguration instruction to UE 101 for the BWP database. The BWP database indicates multiple available BWPs and their corresponding characteristics.

[0034] In operation 305, UE 101 sends an RRC reconfiguration complete message to base station 105.

[0035] In operation 307, BS 105 sends information associated with the predetermined search space to UE 101.

[0036] In operation 309, BS 105 sends BWP configuration to UE 101 using the predefined search space.

[0037] During operation 311, BS 105 and 101 remain in RRC connection state.

[0038] In this method, BS 105 limits BWP DCI based on time and frequency. Additionally, BS 105 enhances detection characteristics, thereby reducing the number of false alarm candidates.

[0039] In another embodiment, such as Figure 4 As shown, one of the predefined operations may include using a predefined Radio Network Temporary Identifier (RNTI) to provide an indication of DCI signaling or L1 signaling. Therefore, BS 105 can use the RNTI to provide UE 101 with an indication of DCI signaling or L1 signaling. Specifically, BS 105 can determine the RNTI used when sending BWP configuration and can use that RNTI to send the BWP configuration. However, in this scenario, BS 105 may send information associated with the predefined RNTI to UE 101 before sending the BWP configuration. Specifically, the associated information helps UE 101 identify the predefined RNTI. In this way, UE 101 can correctly decode the BWP configuration. In another embodiment, the predefined RNTI may be pre-stored at UE 101.

[0040] Therefore, as Figure 4 As shown, in operation 401, UE 101 and base station 105 are in a radio resource control (RRC) connection state.

[0041] In operation 403, base station 105 sends an RRC reconfiguration instruction to UE 101 for the BWP database. The BWP database indicates multiple available BWPs and their corresponding characteristics.

[0042] In operation 405, UE 101 sends an RRC reconfiguration complete message to base station 105.

[0043] In operation 407, BS 105 sends information associated with a predefined RNTI to UE 101.

[0044] In operation 409, BS 105 sends BWP configuration to UE 101 using a predefined RNTI.

[0045] During operation 411, BS 105 and 101 remain in RRC connection state.

[0046] In this method, BS 105 limits BWP DCI based on time, frequency, and unique identifiers. Additionally, BS 105 enhances detection characteristics, thereby reducing the number of false positive candidates.

[0047] In another embodiment, such as Figure 5 As shown, one of the predefined operations may include providing BWP configuration in DCI signaling or L1 signaling using a predefined bit pattern. Therefore, BS 105 can send the BWP configuration to UE 101 using the predefined bit pattern. Specifically, BS 105 can determine the bit pattern to use when sending the BWP configuration and can use that bit pattern to send the BWP configuration. However, in this scenario, BS 105 may send information associated with the predefined bit pattern to UE 101 before sending the BWP configuration. UE 101 can then use the predefined bit pattern to verify the BWP configuration. In one or more embodiments, BS 105 may send information associated with the predefined bit pattern to UE 101 before sending the BWP configuration. In another embodiment, the predefined bit pattern may be pre-stored at UE 101.

[0048] Therefore, as Figure 5 As shown, in operation 501, UE 101 and base station 105 are in a radio resource control (RRC) connection state.

[0049] In operation 503, base station 105 sends an RRC reconfiguration instruction to UE 101 for the BWP database. The BWP database indicates multiple available BWPs and their corresponding characteristics.

[0050] In operation 505, UE 101 sends an RRC reconfiguration complete message to base station 105.

[0051] In operation 507, BS 105 sends information associated with a predefined bit pattern to UE 101.

[0052] In operation 509, BS 105 sends BWP configuration to UE 101 using a predefined bit pattern.

[0053] During operation 511, BS 105 and 101 remain in RRC connection state.

[0054] This method helps UE 101 verify BWP configuration and filter out false alarms.

[0055] In another embodiment, such as Figure 6As shown, one of the predefined operations may include providing BWP configuration using a predefined aggregation level associated with DCI signaling or L1 signaling. Therefore, BS 105 can send BWP configuration to UE 101 using the predefined aggregation level. In one or more embodiments, BS 105 may send information associated with the predefined aggregation level to UE 101 before sending the BWP configuration. The information associated with the predefined aggregation level may indicate the size of the DCI. In another embodiment, the predefined aggregation level may be pre-stored at UE 101.

[0056] Therefore, as Figure 6 As shown, in operation 601, UE 101 and base station 105 are in a radio resource control (RRC) connection state.

[0057] In operation 603, base station 105 sends an RRC reconfiguration instruction to UE 101 for the BWP database. The BWP database indicates multiple available BWPs and their corresponding characteristics.

[0058] In operation 605, UE 101 sends an RRC reconfiguration complete message to base station 105.

[0059] In operation 607, BS 105 sends information associated with a predefined aggregation level to UE 101.

[0060] In operation 609, BS 105 sends BWP configuration to UE 101 using a predefined aggregation level.

[0061] During operation 611, BS 105 and 101 remain in RRC connection state.

[0062] This method reduces the likelihood of missed and false alarms.

[0063] In another embodiment, such as Figure 7 As shown, BS 105 can receive signal strength associated with the connection between UE 101 and BS 105. For example, BS 105 can receive signal strength from UE 101. In one or more embodiments, BS 105 may use techniques known in the art to receive signal strength. Furthermore, when the signal strength is higher than a predefined threshold, BS 105 may send a BWP configuration. The predefined threshold can be configured by BS 105.

[0064] Therefore, as Figure 7 As shown, in operation 701, UE 101 and base station 105 are in a radio resource control (RRC) connection state.

[0065] In operation 703, base station 105 sends an RRC reconfiguration instruction to UE 101 for the BWP database. The BWP database indicates multiple available BWPs and their corresponding characteristics.

[0066] In operation 705, UE 101 sends an RRC reconfiguration complete message to base station 105.

[0067] During operation 707, BS 105 receives signal strength from UE 101.

[0068] In operation 709, when the signal strength is higher than a predefined threshold, BS 105 sends BWP configuration.

[0069] During operation 711, BS 105 and 101 remain in RRC connection state.

[0070] This method reduces the likelihood of missed reports.

[0071] In another embodiment, BS 105 may send an indication based on L1 / L2 / L3 layers to trigger UE 101 to begin receiving BWP configuration. Specifically, BS 105 may send an indication based on L1 / L2 / L3 layers to UE 101, and UE 101 may begin receiving BWP configuration in response to the indication.

[0072] Figure 8 A flowchart depicting a method for managing BWP configuration at UE 101 according to one or more embodiments of the present disclosure is shown. In one or more embodiments, as Figure 8 The method 800 described herein can be executed by UE 101. Therefore, it has been combined with Figure 1 Explained Figure 8 .

[0073] like Figure 8 As shown, in operation 801, method 800 may include receiving BWP configuration in either DCI signaling or Layer 1 (L1) signaling. In one or more embodiments, as Figure 9 As shown, BWP configuration can be received at PDCCH module 901. Figure 9 As shown, the PDCCH module 901 may include a database 903 and a PDCCH decoder 905. The PDCCH module 901 may be part of the UE 101 and may perform method 800. Therefore, BWP configuration can be received from the BS 105 at the PDCCH module 901. In one or more embodiments, it may be based on references... Figures 3 to 7The described technique transmits the BWP configuration in either DCI signaling or L1 signaling. Therefore, information associated with one of the predefined operations can be stored at database 903. The stored information can then be used by PDCCH decoder 905 to verify the BWP configuration. In another embodiment, the BWP configuration can be transmitted according to techniques known in the art. In one or more embodiments, the BWP configuration indicates a target BWP for the UE. UE 101 can switch to the target BWP when verifying the BWP configuration.

[0074] Subsequently, in operation 803, method 800 may include verifying the received BWP configuration to maintain the connection between the UE and the BS. Specifically, the PDCCH decoder 905 may verify the BWP configuration according to one of the following embodiments, which helps reduce false alarms, false negatives, and / or delays when using the BWP configuration. Therefore, the connection between UE 101 and BS 105 is maintained.

[0075] In one or more embodiments, the PDCCH decoder 905 can simultaneously monitor both the source BWP and the target BWP associated with the UE until the next DCI signaling or L1 signaling is received. The source BWP refers to the BWP currently being used by the UE 101 to communicate with the BS 105. Therefore, the PDCCH decoder 905 can monitor both the source and target BWP simultaneously. However, the PDCCH decoder 905 does not switch to the target BWP until the next DCI signaling or L1 signaling is received. The next DCI signaling or L1 signaling may include a second BWP. The PDCCH decoder 905 can then determine whether the target BWP and the second BWP are the same. If the two BWPs (i.e., the target BWP and the second BWP) are the same, the PDCCH decoder 905 can verify the received BWP configuration. The PDCCH decoder 905 can then switch to the target BWP when verifying the target BWP.

[0076] In another embodiment, UE 101 may send a predefined number of scheduling requests (SRs) using a target BWP. PDCCH decoder 905 may then verify the received BWP configuration when it receives an uplink (UL) grant for the target BWP before the predefined number of SRs or a predefined timer expires. Therefore, if UE 101 receives an UL grant for the target BWP before the predefined number of SRs or a predefined timer expires, PDCCH decoder 905 may switch to the target BWP. However, if the target BWP is not verified (i.e., PDCCH decoder 905 fails to receive an UL grant for the target BWP before the predefined number of SRs or a predefined timer expires), PDCCH decoder 905 may switch to the source BWP. In one or more embodiments, the predefined number of SRs and the predefined timer may be determined based on at least one of downlink channel strength, uplink channel strength, signal-to-interference ratio, SR period, and time-division duplex (TDD) configuration.

[0077] In another embodiment, the PDCCH decoder 905 can determine whether the BWP received in a predefined number of DCIs or L1 signaling is different from the source BWP. If the BWP is different from the source BWP, the PDCCH decoder 905 can verify the BWP configuration. Then, the PDCCH decoder 905 can switch to the target BWP based on this determination. In one or more embodiments, the predefined number of DCIs or L1 signaling is determined based on at least one of downlink signal strength, uplink channel strength, signal-to-interference ratio, and PDCCH error rate.

[0078] Figure 10 A signal flow diagram for managing BWP configuration at the UE is shown.

[0079] Therefore, as Figure 10 As shown, in operation 1001, UE 101 and base station 105 are in a radio resource control (RRC) connection state.

[0080] In operation 1003, base station 105 sends an RRC reconfiguration-instruction to the BWP database.

[0081] In operation 1005, UE 101 sends an RRC reconfiguration complete message to base station 105.

[0082] In operation 1007, UE 101 receives BWP configuration from BS 105.

[0083] In operation 1009, UE 101, according to the reference... Figures 8 to 9 The techniques discussed at the time were used to verify the BWP configuration.

[0084] During operation 1011, BS 105 and 101 remain in RRC connection state.

[0085] Figure 11 A block diagram of a system for managing BWP configuration according to one or more embodiments of the present disclosure is shown.

[0086] When system 1100 is configured to execute Figures 2 to 7 When using the method, Figure 11 The configuration can be understood as part of the configuration of BS 105. Therefore, the method 200 disclosed above can be implemented in system 1100 according to yet another embodiment. In another embodiment, when system 1100 is configured to perform... Figures 8 to 10 When using the method, Figure 10 The configuration can be understood as part of the configuration of UE 101. Therefore, the method 800 disclosed above can be implemented in system 1100 according to another embodiment.

[0087] Reference Figure 10 The system 1100 may include a "processor (one or more)" as at least one processor 1101, communication circuitry 1103 (e.g., a communicator or communication interface), and memory 1105.

[0088] As an example, at least one processor 1101 may be a single processor or multiple processors, all of which may include multiple computing circuits. Processor 1101 may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuits, and / or any means of manipulating signals based on operating instructions. Among other capabilities, processor 1101 is also configured to acquire and execute computer-readable instructions and data stored in memory 1105. Processor 1101 may include one or more processors. At this time, one or more processors 1101 may be a general-purpose processor (such as a central processing unit (CPU), application processor (AP), etc.), a graphics-only processing unit (such as a graphics processing unit (GPU)), a vision processing unit (VPU), and / or an AI-specific processor (such as a neural processing unit (NPU)). One or more processors 1101 may control the processing of input data according to predefined operating rules or artificial intelligence (AI) models stored in non-volatile memory and volatile memory (i.e., memory 1105). Predefined operating rules or AI models are provided through training or learning.

[0089] The communication circuit 1103 can perform functions for transmitting and receiving signals via a wireless channel. In one or more embodiments, according to the technology disclosed in this disclosure, the communication circuit 1103 can transmit / receive BWP configuration. In another embodiment, at least one processor 1101 can execute via the communication circuit 1103. Figure 2 Operations 201-203. In another embodiment, at least one processor 1101 may execute via communication circuitry 1103. Figure 3 Operations 801-803.

[0090] Memory 1105 may include one or more of any non-transitory computer-readable media known in the art, including, for example, volatile memory (such as static random access memory (SRAM) and dynamic random access memory (DRAM)) and / or non-volatile memory (such as read-only memory (ROM), erasable programmable ROM, flash memory, hard disk, optical disk, and magnetic tape). Memory 1105 may also store BWP configuration according to the techniques disclosed in this disclosure.

[0091] The embodiments disclosed herein are exemplary in nature, and system 1100 may include additional components required to achieve the desired functionality of system 1100 in accordance with the requirements of this disclosure.

[0092] Therefore, this disclosure provides techniques for maintaining synchronization between UE 101 and BS 105.

[0093] Therefore, this disclosure provides various advantages. For example, this disclosure provides techniques for reducing false alarms and missed alarms when sending / receiving BWP configuration. The disclosed techniques also facilitate the verification of BWP configuration at UE 101.

[0094] Therefore, the method for describing an effective BWP configuration for maintaining the link between UE 101 and BS 105 can be applied or extended to similar applications employing L1 (DCI) signaling.

[0095] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. The systems, methods, and examples provided herein are illustrative only and not restrictive.

[0096] The benefits, other advantages, and solutions to problems have been described above with reference to specific embodiments. However, the benefits, advantages, solutions to problems, and any components that may cause any benefit, advantage, or solution to occur or become more apparent should not be construed as key, necessary, or essential features or components of any or all claims.

[0097] While specific language has been used to describe the subject matter, it is not intended to create any limitation. It will be apparent to those skilled in the art that various working modifications can be made to the methods to achieve the embodiments disclosed herein. The accompanying drawings and the foregoing description provide examples of embodiments. Those skilled in the art will understand that one or more of the described elements can be well combined into a single functional element. Optionally, a particular element may be divided into multiple functional elements. Elements from one embodiment may be added to another embodiment.

Claims

1. A method for managing bandwidth portion BWP configuration, the method comprising: The base station (BS) communicating with the user equipment (UE) determines that it will share BWP configurations from multiple BWPs with the UE; as well as The BS sends the BWP configuration in one of a plurality of predefined operations in either Downlink Control Information (DCI) signaling or Layer 1 (L1) signaling, thereby maintaining the connection between the UE and the BS.

2. The method as described in claim 1, in, One of the predefined operations includes mapping the DCI signaling or the L1 signaling to a predetermined search space in the Physical Downlink Control Channel (PDCCH), and The operation of sending the BWP configuration includes sending information associated with the predetermined search space to the UE.

3. The method as described in claim 1, in, One of the predefined operations includes: using a predefined Radio Network Temporary Identifier (RNTI) to provide an indication of the DCI signaling or the L1 signaling, and The method further includes: Before sending the BWP configuration, information associated with the predefined RNTI is sent to the UE.

4. The method of claim 1, wherein, One of the predefined operations includes: A predefined RNTI is used to provide indication of the DCI signaling or the L1 signaling, wherein the predefined RNTI is pre-stored at the UE.

5. The method as described in claim 1, in, One of the plurality of predefined operations includes: providing the BWP configuration in the DCI signaling or the L1 signaling using a predefined bit pattern, and The method further includes: Before sending the BWP configuration, information associated with the predefined bit pattern is sent to the UE.

6. The method of claim 1, wherein, One of the predefined operations includes: A predefined bit pattern is used to provide indication of the DCI signaling or the L1 signaling, wherein the predefined bit pattern is pre-stored at the UE.

7. The method as described in claim 1, in, The operation of sending the BWP configuration further includes: sending the BWP configuration using a predefined aggregation level associated with the DCI signaling or the L1 signaling, and The method further includes: Send information associated with the predefined aggregation level to the UE.

8. The method of claim 1, wherein, One of the predefined operations includes: Indication to the DCI signaling or the L1 signaling is provided using a predefined aggregation level associated with the DCI signaling or the L1 signaling, wherein the predefined aggregation level is pre-stored at the UE.

9. The method of claim 1, wherein, The operation of sending the BWP configuration also includes: The received signal strength is associated with the connection between the UE and the BS; and Based on the signal strength being higher than a predefined threshold, the BWP configuration is sent.

10. The method of claim 9, further comprising: Send an indication based on L1 / Layer 2 L2 / Layer 3 L3 to trigger the UE to start receiving the BWP configuration.

11. A method for managing a bandwidth portion (BWP) configuration, the method comprising: A user equipment (UE) communicating with a base station (BS) receives a BWP configuration in either downlink control information (DCI) signaling or layer 1 (L1) signaling, wherein the BWP configuration indicates a target BWP for the UE; and The BWP configuration received by the UE verifies that the connection between the UE and the BS is maintained.

12. The method of claim 11, wherein, The steps to verify the received BWP configuration include: Simultaneously monitor the source BWP and the target BWP associated with the UE until the next DCI signaling or the next L1 signaling is received, wherein the next DCI signaling or the next L1 signaling includes the second BWP; Determine whether the target BWP and the second BWP are the same; and The received BWP configuration is verified based on whether the target BWP and the second BWP are the same.

13. The method of claim 11, wherein, The steps to verify the received BWP configuration include: Send a predefined number of scheduling requests SR using the target BWP; and Verify the received BWP configuration based on receiving uplink UL authorization for the target BWP before the predefined number of SRs or predefined timers expire.

14. The method of claim 13, further comprising: Switch to the source BWP if no UL authorization is received for the target BWP before the predefined number of SRs or the predefined timer expires.

15. The method of claim 13, wherein, The predefined number of SRs and the predefined timers are based on at least one of downlink channel strength, uplink channel strength, signal-to-interference ratio, SR period, and time-division duplex (TDD) configuration.

16. The method of claim 11, in, The steps to verify the received BWP configuration include: Based on determining whether the BWP received in a predefined number of DCIs or in the L1 signaling is different from the source BWP, the BWP configuration is verified based on this determination, and The method further includes: Based on whether the BWP received in the predefined number of DCIs or in the L1 signaling is different from the source BWP, switch to the target BWP.

17. The method of claim 16, wherein, The predefined quantity of DCI or the L1 signaling is determined based on at least one of downlink signal strength, uplink channel strength, signal-to-interference ratio, and PDCCH error rate.

18. A system for managing bandwidth portion (BWP) configuration, the system comprising: At least one memory, storing one or more instructions; At least one processor is configured to execute the one or more instructions, wherein the one or more instructions, when executed by the at least one processor, cause the system to perform the following operations: It is determined that BWP configurations from multiple BWPs will be shared with the User Equipment (UE); and The BWP configuration is transmitted in one of a plurality of predefined operations in either Downlink Control Information (DCI) signaling or Layer 1 (L1) signaling, thereby maintaining the connection between the UE and the BS.

19. A system for managing bandwidth portion (BWP) configuration, the system comprising: At least one memory, storing one or more instructions; At least one processor is configured to execute the one or more instructions, wherein the one or more instructions, when executed by the at least one processor, cause the system to perform the following operations: BWP configuration is received in either Downlink Control Information (DCI) signaling or Layer 1 (L1) signaling, wherein the BWP configuration indicates a target BWP for the User Equipment (UE), and Verify the received BWP configuration to maintain the connection between the UE and the BS.

20. The system as described in claim 18, in, One of the predefined operations includes mapping the DCI signaling or the L1 signaling to a predetermined search space in the Physical Downlink Control Channel (PDCCH), and Wherein, when the one or more instructions are executed by the at least one processor, the system sends information associated with the predetermined search space to the UE.

21. The system as described in claim 18, in, One of the predefined operations includes: using a predefined Radio Network Temporary Identifier (RNTI) to provide an indication of the DCI signaling or the L1 signaling, and Wherein, when the one or more instructions are executed by the at least one processor, the system sends information associated with the predefined RNTI to the UE before sending the BWP configuration.

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