Method, apparatus and network device for identifying terminal bandwidth capability, and storage medium

Abstract

The application discloses a terminal bandwidth capability identification method and device, a network device and a storage medium. The terminal bandwidth capability identification method comprises the following steps: a network device determines a frequency band bandwidth supported by a terminal device based on feedback of the terminal device on a working bandwidth configured by a network side.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, apparatus, network device, and storage medium for identifying terminal bandwidth capability. Background Technology

[0002] The 3rd Generation Partnership Project (3GPP) defines a series of frequency band resources for 4G (4th Generation mobile communication) LTE and 5G (5th Generation mobile communication) NR, and assigns a frequency band number to each band to identify its range. When a terminal device camps on a cell, it reports to the base station the frequency band numbers of all frequency bands it supports and the operating bandwidth of each band. The base station allocates operating bandwidth to the terminal device based on the reported frequency band numbers and corresponding operating bandwidths. In related technologies, because the base station cannot know the bandwidth capabilities of the terminal device, it assumes that the terminal device supports the full bandwidth of the reported frequency band number, which may lead to a discrepancy between the operating bandwidth allocated by the base station and the bandwidth capabilities of the terminal device. Summary of the Invention

[0003] To address the related technical issues, embodiments of this application provide a method, apparatus, network device, and storage medium for identifying terminal bandwidth capabilities.

[0004] The technical solution of this application embodiment is implemented as follows:

[0005] This application provides a method for identifying terminal bandwidth capabilities, applied to network devices, the method comprising:

[0006] Based on the feedback from the terminal device regarding the working bandwidth configured on the network side, the frequency band bandwidth supported by the terminal device is determined.

[0007] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the terminal device's feedback regarding the network-side configured working bandwidth includes:

[0008] Based on the first or second message sent by the terminal device regarding the working bandwidth configured on the network side, the frequency band bandwidth supported by the terminal device is determined.

[0009] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the first or second message sent by the terminal device regarding the working bandwidth configured on the network side includes:

[0010] Receive a first message from the terminal device regarding the first operating bandwidth configured on the network side;

[0011] The terminal device is configured with a second operating bandwidth; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth.

[0012] Based on the first or second message sent by the terminal device regarding the second working bandwidth, the frequency band bandwidth supported by the terminal device is determined.

[0013] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the first or second message sent by the terminal device regarding the second working bandwidth includes:

[0014] Based on the first message sent by the terminal device regarding the second working bandwidth, it is determined that the terminal device supports full-band bandwidth;

[0015] Based on the second message sent by the terminal device regarding the second working bandwidth, it is determined that the terminal device supports the first frequency band bandwidth.

[0016] The method in the above scheme further includes:

[0017] Based on the second message sent by the terminal device regarding the first working bandwidth configured on the network side, it is determined that the terminal device supports the second frequency band bandwidth.

[0018] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the first or second message sent by the terminal device regarding the working bandwidth configured on the network side includes:

[0019] Receive a first message from the terminal device regarding the second operating bandwidth configured on the network side;

[0020] The terminal device is configured with a first operating bandwidth; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth.

[0021] Based on the first or second message sent by the terminal device regarding the first working bandwidth, the frequency band bandwidth supported by the terminal device is determined.

[0022] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the first message or second message sent by the terminal device regarding the first working bandwidth includes:

[0023] Based on the first message sent by the terminal device regarding the first working bandwidth, it is determined that the terminal device supports full-band bandwidth;

[0024] Based on the second message sent by the terminal device regarding the first working bandwidth, it is determined that the terminal device supports the second frequency band bandwidth.

[0025] The method in the above scheme further includes:

[0026] Based on the second message sent by the terminal device regarding the second working bandwidth configured on the network side, it is determined that the terminal device supports the first frequency band bandwidth.

[0027] In the above scheme, the working bandwidth configured on the network side includes a portion of the bandwidth BWP.

[0028] In the above scheme, the first message includes Radio Resource Control (RRC) connection reconfiguration completion signaling; the second message includes RRC connection re-establishment signaling.

[0029] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the terminal device's feedback regarding the network-side configured working bandwidth includes:

[0030] A first synchronization signal block (SSB) and a second SSB are configured for the terminal device; the first physical random access channel (PRACH) of the first SSB is configured in a frequency range corresponding to the first working bandwidth; the second PRACH of the second SSB is configured in a frequency range corresponding to the second working bandwidth; the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth.

[0031] Based on the PRACH and the first data packet received by the terminal device during random access, the frequency band bandwidth supported by the terminal device is determined; wherein,

[0032] The first data packet represents the terminal device's response to the second data packet; the second data packet represents the first data packet sent by the network side.

[0033] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the PRACH and the first data packet initiated by the terminal device includes:

[0034] When the terminal device performs random access on the first PRACH, it sends the second data packet on the second working bandwidth. If the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth. If the received first data packet is NACK, it is determined that the terminal device supports first-band bandwidth.

[0035] When the terminal device performs random access on the second PRACH, it sends the second data packet on the first working bandwidth. If the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth. If the received first data packet is NACK, it is determined that the terminal device supports second-band bandwidth.

[0036] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the terminal device's feedback regarding the network-side configured working bandwidth includes:

[0037] The random access of the terminal device has been confirmed to be successful;

[0038] Configure the initial operating bandwidth for the terminal device;

[0039] Based on the first data packet and the third data packet sent by the terminal device, the frequency band bandwidth supported by the terminal device is determined; wherein,

[0040] The initial operating bandwidth represents a third operating bandwidth located between the first and second operating bandwidths; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth; the first data packet represents the terminal device's feedback to the second data packet; the second data packet represents the first data packet sent by the network side; the third data packet represents the terminal device's feedback to the fourth data packet; and the fourth data packet represents the second data packet sent by the network side.

[0041] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the first data packet and the third data packet sent by the terminal device includes:

[0042] The second data packet is sent on the first working bandwidth, and if the first data packet received is ACK, it is determined that the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth; if the first data packet received is NACK, it is determined that the terminal device supports the second frequency band bandwidth.

[0043] If the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth, the fourth data packet is sent on the second working bandwidth. If the received third data packet is ACK, it is determined that the terminal device supports the full frequency band bandwidth. If the received third data packet is NACK, it is determined that the terminal device supports the first frequency band bandwidth.

[0044] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the first data packet and the third data packet sent by the terminal device includes:

[0045] The second data packet is sent on the second working bandwidth, and if the first data packet received is ACK, it is determined that the terminal device supports full-band bandwidth or second-band bandwidth; if the first data packet received is NACK, it is determined that the terminal device supports first-band bandwidth.

[0046] If the terminal device supports full-band bandwidth or second-band bandwidth, the fourth data packet is sent on the first working bandwidth. If the received third data packet is ACK, it is determined that the terminal device supports the full-band bandwidth. If the received third data packet is NACK, it is determined that the terminal device supports the second-band bandwidth.

[0047] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the terminal device's feedback regarding the network-side configured working bandwidth includes:

[0048] Configure a first BWP and a second BWP for the terminal device; the first BWP corresponds to a first frequency range; the second BWP corresponds to a second frequency range; the first frequency range is lower than the second frequency range.

[0049] Based on the first reference signal strength and the second reference signal strength, the frequency band bandwidth supported by the terminal device is determined; wherein,

[0050] The first reference signal strength characterizes the signal strength of the reference signal corresponding to the first BWP fed back by the terminal device; the second reference signal strength characterizes the signal strength of the reference signal corresponding to the second BWP fed back by the terminal device.

[0051] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the first reference signal strength and the second reference signal strength includes:

[0052] The frequency band bandwidth supported by the terminal device is determined based on the absolute value of the difference between the first reference signal strength and the second reference signal strength.

[0053] In the above scheme, determining the frequency band bandwidth supported by the terminal device based on the absolute value of the difference between the first reference signal strength and the second reference signal strength includes:

[0054] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is less than or equal to a set threshold, it is determined that the terminal device supports full-band bandwidth.

[0055] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is greater than the set threshold, and the first reference signal strength is greater than the second reference signal strength, it is determined that the terminal device supports the first frequency band bandwidth.

[0056] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is greater than the set threshold, and the first reference signal strength is less than the second reference signal strength, then the terminal device is determined to support the second frequency band bandwidth.

[0057] In the above scheme, the frequency range corresponding to the first working bandwidth is 703MHz to 718MHz; the frequency range corresponding to the second working bandwidth is 733MHz to 743MHz, or 733MHz to 748MHz.

[0058] In the above scheme, the frequency range corresponding to the full-band bandwidth is 703MHz to 748MHz; the frequency range corresponding to the first band bandwidth is 703MHz to 733MHz; and the frequency range corresponding to the second band bandwidth is 718MHz to 748MHz.

[0059] The method in the above scheme further includes:

[0060] Based on the frequency band bandwidth supported by the terminal device, adjust to the working bandwidth configured for the terminal device.

[0061] This application embodiment also provides a terminal bandwidth capability identification device, including:

[0062] The determining unit is used to determine the frequency band bandwidth supported by the terminal device based on the feedback from the terminal device regarding the working bandwidth configured on the network side.

[0063] This application also provides a network device, characterized in that it includes a processor and a communication interface, wherein,

[0064] The processor is used to determine the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the working bandwidth configured on the network side.

[0065] This application also provides a network device, including a processor and a memory for storing computer programs that can run on the processor.

[0066] When the processor runs the computer program, it executes the steps of any of the above-described methods for identifying terminal bandwidth capabilities.

[0067] This application also provides a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of any of the above-described methods for identifying terminal bandwidth capabilities.

[0068] In this embodiment, the network device determines the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the working bandwidth configured on the network side. This allows the network device to accurately determine the frequency band bandwidth supported by the terminal device, enabling it to allocate working bandwidth to the terminal device based on this bandwidth. This avoids situations where the working bandwidth allocated by the base station to the terminal does not match the terminal's bandwidth capabilities, thereby improving the success rate of service establishment. Attached Figure Description

[0069] Figure 1 This is a schematic diagram of the n28 frequency band in related technologies;

[0070] Figure 2 A schematic diagram illustrating the implementation process of the terminal bandwidth capability identification method provided in this application embodiment;

[0071] Figure 3 This is an interaction diagram between a network device and a terminal provided in an embodiment of this application;

[0072] Figure 4 An interaction diagram between a network device and a terminal provided in another embodiment of this application;

[0073] Figure 5 A schematic diagram illustrating the implementation process of the terminal bandwidth capability identification method provided in this application embodiment;

[0074] Figure 6 A schematic diagram illustrating the implementation process of a terminal bandwidth capability identification method provided in another embodiment of this application;

[0075] Figure 7 A schematic diagram illustrating the implementation process of a terminal bandwidth capability identification method provided in another embodiment of this application;

[0076] Figure 8 A schematic diagram illustrating the implementation process of a terminal bandwidth capability identification method provided in another embodiment of this application;

[0077] Figure 9 A schematic diagram illustrating the implementation process of a terminal bandwidth capability identification method provided in another embodiment of this application;

[0078] Figure 10 A schematic diagram illustrating the implementation process of a terminal bandwidth capability identification method provided in another embodiment of this application;

[0079] Figure 11 A schematic diagram illustrating the implementation process of a terminal bandwidth capability identification method provided in another embodiment of this application;

[0080] Figure 12 A schematic diagram of the structure of the terminal bandwidth capability identification device provided in the embodiments of this application;

[0081] Figure 13 This is a schematic diagram of the hardware structure of the network device provided in an embodiment of this application. Detailed Implementation

[0082] Currently, for some frequency bands, it is difficult for terminal devices to support the full-band bandwidth. For example, the uplink bandwidth range corresponding to the n28 band defined by 3GPP is 703-748MHz, and the downlink bandwidth range is 758-803MHz. First, if terminal devices support the full-band bandwidth, there will be self-interference problems. Second, global spectrum allocation is scattered, making it difficult to have a complete frequency band.

[0083] Regarding the first point, the n28 frequency band, as Figure 1 As shown, the interval between the uplink and downlink frequency ranges is very short, only 10MHz, making uplink transmission prone to interfering with downlink transmission, resulting in self-interference. One industry approach addresses this issue by segmenting the entire frequency band. The n28 band is divided into two partially overlapping sub-bands: Sub-band A (uplink frequency range 703-733MHz, downlink frequency range 758-788MHz) and Sub-band B (uplink frequency range 718-748MHz, downlink frequency range 773-803MHz), with a 25MHz interval between the uplink and downlink frequency ranges in each segment to avoid self-interference issues with terminal devices. This solution can be implemented using two independent filters, each corresponding to either Sub-band A or Sub-band B. The two filters cannot operate simultaneously; the terminal device will only activate one filter during operation.

[0084] Regarding the second point, the n28 band, due to its lower frequency and better coverage, is considered a golden frequency band for mobile communication and has a wide range of uses, such as broadcasting, emergency response, and cellular mobile communication. This has led to the n28 band being relatively dispersed in global 5G spectrum allocation. For example, in some regions, only sub-band A of the n28 band has been allocated, so some operators in those regions only require terminals to support sub-band A.

[0085] In summary, the 3GPP protocol only defines the bandwidth capability reported by the terminal device for each frequency band. By default, the terminal device supports the full bandwidth of each frequency band. However, for some frequency bands, supporting the full bandwidth is difficult, leading to various types of terminal devices with different bandwidth capabilities. For example, there are terminal devices that only support sub-band A (also known as Type A), terminal devices that only support sub-band B (also known as Type B), and terminal devices that support both sub-band A and sub-band B, i.e., terminal devices supporting the full frequency band bandwidth, to meet the needs of different operators worldwide. In related technologies, the 3GPP protocol does not define the actual supported bandwidth capability reported by the terminal device. The base station cannot know the actual supported bandwidth capability of the terminal device. When the terminal device initiates service establishment, if the working bandwidth allocated by the base station does not match the bandwidth capability of the terminal device, frequency band resource allocation will fail, leading to service establishment failure.

[0086] Based on this, embodiments of this application provide a method for identifying terminal bandwidth capabilities. The network device determines the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the working bandwidth configured on the network side. In this way, the network device can accurately determine the frequency band bandwidth supported by the terminal device, thereby allocating working bandwidth to the terminal device based on the supported frequency band bandwidth. This avoids situations where the working bandwidth allocated by the base station to the terminal does not match the terminal's bandwidth capability, thus improving the success rate of service establishment.

[0087] It should be noted that the embodiments of this application are implemented by dividing the frequency range corresponding to the frequency band number into sub-band A (also called Type A) and sub-band B (also called Type B) with partial overlap. The overlapping part between Type A and Type B is marked as the third working bandwidth. The parts of Type A and Type B other than the third working bandwidth are the first working bandwidth and the second working bandwidth, respectively. When the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth, the working bandwidth corresponding to Type A consists of the first working bandwidth and the third working bandwidth, and the working bandwidth corresponding to Type B consists of the third working bandwidth and the second working bandwidth.

[0088] The frequency band bandwidth supported by the terminal device falls into the following three categories:

[0089] It only supports the first frequency band bandwidth, that is, it supports Type A;

[0090] It only supports the second frequency band bandwidth, that is, it supports Type B;

[0091] It supports the first and second frequency band bandwidths, meaning it supports full frequency band bandwidth.

[0092] It should be understood that the technical solutions of this application can be applied to various communication systems, such as: Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A), Universal Mobile Telecommunication System (UMTS), New Radio Access Technology (NR), 5G, etc.

[0093] It should also be understood that, in the embodiments of this application, the terminal may include, but is not limited to, a mobile station (MS), a mobile terminal, a mobile telephone, user equipment (UE), a handset, and portable equipment. The terminal may communicate with one or more core networks via a radio access network (RAN). For example, the terminal may be a mobile phone (or "cellular" phone), a computer with wireless communication capabilities, etc. The terminal may also be a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device.

[0094] In this embodiment of the application, the network device can be an access network device, such as a base station, a transmit and receive point (TRP), or an access point. The base station can be a base station (BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, an evolved base station (eNB or e-NodeB) in LTE, or a base station (gNB) in NR or 5G. This embodiment of the application does not specifically limit the specific type of base station.

[0095] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0096] Figure 2 This is a schematic diagram illustrating the implementation flow of the terminal bandwidth capability identification method according to an embodiment of this application. The execution entity of the process is a network device. Figure 2 As shown, the methods for identifying terminal bandwidth capabilities include:

[0097] Step 201: Based on the feedback from the terminal device regarding the working bandwidth configured on the network side, determine the frequency band bandwidth supported by the terminal device.

[0098] Here, when the terminal device is camped in the cell, it reports the frequency band numbers of all frequency bands supported by the terminal device and the working bandwidth of each frequency band to the corresponding network device.

[0099] The network device configures the working bandwidth for the terminal device based on the frequency band number and corresponding working bandwidth reported by the terminal device, sends the configured working bandwidth to the terminal device, and receives feedback from the terminal device regarding the configured working bandwidth. Based on the feedback reported by the terminal device, the network device determines the frequency band bandwidth supported by the terminal device.

[0100] In this embodiment, the network device can accurately determine the frequency band bandwidth supported by the terminal device based on the feedback from the terminal device regarding the working bandwidth configured on the network side. This allows the network device to allocate working bandwidth to the terminal device based on the frequency band bandwidth supported by the terminal device, avoiding a mismatch between the working bandwidth allocated by the base station to the terminal and the terminal's bandwidth capability, thereby improving the success rate of service establishment.

[0101] It should be noted that after determining the frequency band bandwidth supported by the terminal device, the method may further include:

[0102] Based on the frequency band bandwidth supported by the terminal device, adjust to the working bandwidth configured for the terminal device.

[0103] Here, when the frequency band bandwidth supported by the terminal device does not match the configured working bandwidth, the bandwidth is adjusted to match the configured working bandwidth based on the frequency band bandwidth supported by the terminal device. This improves the success rate of service establishment.

[0104] It should be noted that network devices can distribute configured working bandwidth in various ways, and terminal devices can also report feedback on the working bandwidth configured by the network side in various ways. This application provides four implementation schemes:

[0105] Implementation Plan 1:

[0106] During the negotiation between a network device and a terminal device in RRC connection state regarding the frequency band bandwidth supported by the terminal device, the network device sends the working bandwidth configured for the terminal device via Radio Resource Control (RRC) signaling, and the terminal device responds via corresponding RRC signaling. For example, the network device sends the working bandwidth configured for the terminal device via RRC Connection Reconfiguration signaling. The terminal device responds via RRC Connection Reconfiguration Complete signaling or RRC Connection Reestablishment Request signaling. RRC Connection Reconfiguration Complete signaling indicates that the terminal device has successfully configured the working bandwidth configured by the network side; RRC Connection Reestablishment signaling indicates that the terminal device has not successfully configured the working bandwidth configured by the network side, or that the configuration failed.

[0107] In some embodiments, in step 201, determining the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the operating bandwidth configured on the network side includes:

[0108] Based on a first or second message sent by the terminal device regarding the network-side configured operating bandwidth, the frequency band bandwidth supported by the terminal device is determined. The first message indicates whether the terminal device has completed configuring the network-side configured operating bandwidth.

[0109] It should be noted that, if the terminal device supports the working bandwidth configured by the network device, the terminal device sends a first message to the network device, indicating that the terminal device has completed the configuration of the working bandwidth configured by the network. If the terminal device does not support the working bandwidth configured by the network device, the terminal device sends a second message to the network device, indicating that the terminal device has not completed the configuration of the working bandwidth configured by the network, or that the configuration has failed.

[0110] In some embodiments, the working bandwidth configured on the network side includes a portion of the bandwidth (BWP, BandwidthPart).

[0111] In some embodiments, the first message includes RRC connection reconfiguration completion signaling; the second message includes RRC connection reconstruction signaling.

[0112] like Figures 3 to 4As shown, the network device sends an RRC connection reconfiguration signaling message to the terminal device. The RRC connection reconfiguration signaling message carries the working bandwidth configured for the terminal device. Upon receiving the RRC connection reconfiguration signaling message from the network device, the terminal device configures the bandwidth based on the working bandwidth carried in the RRC connection reconfiguration signaling message, and based on the configuration result, sends an RRC connection reconfiguration completion signaling message or an RRC connection reconstruction signaling message to the network device.

[0113] Specifically, if the configuration result indicates that the terminal device has completed the configuration of the working bandwidth configured on the network side, an RRC connection reconfiguration completion signaling is sent to the network device; if the configuration result indicates that the terminal device has not completed the configuration of the working bandwidth configured on the network side, or the configuration has failed, an RRC connection reconstruction signaling is sent to the network device, so that the network device can reconfigure the working bandwidth for the terminal device and send the RRC connection reconfiguration signaling to the terminal device again in the case of the RRC connection reconstruction signaling.

[0114] In practical applications, during the negotiation between network devices and terminal devices regarding the frequency band bandwidth supported by the terminal device, the network device can configure a first working bandwidth for the terminal device before configuring a second working bandwidth. For example... Figure 5 As shown, in some embodiments, determining the frequency band bandwidth supported by the terminal device based on a first or second message sent by the terminal device regarding the network-side configured operating bandwidth includes:

[0115] Step 501: Receive a first message from the terminal device regarding the first operating bandwidth configured on the network side;

[0116] Step 502: Configure a second operating bandwidth for the terminal device; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth;

[0117] Step 503: Based on the first or second message sent by the terminal device regarding the second working bandwidth, determine the frequency band bandwidth supported by the terminal device.

[0118] Here, the network device configures a first operating bandwidth for the terminal device. Upon receiving a first message from the terminal device regarding the first operating bandwidth, the network device determines that the terminal device has completed the configuration of the first operating bandwidth. Then, it configures a second operating bandwidth for the terminal device and, based on the first or second message from the terminal device regarding the second operating bandwidth, determines the frequency band bandwidth supported by the terminal device. Thus, the network device can accurately determine the frequency band bandwidth supported by the terminal device.

[0119] In some embodiments, in step 503, determining the frequency band bandwidth supported by the terminal device based on the first or second message sent by the terminal device regarding the second operating bandwidth includes:

[0120] Based on the first message sent by the terminal device regarding the second working bandwidth, it is determined that the terminal device supports full-band bandwidth;

[0121] Based on the second message sent by the terminal device regarding the second working bandwidth, it is determined that the terminal device supports the first frequency band bandwidth.

[0122] Here, it is considered that the network device configures the second working bandwidth for the terminal device after the terminal device has completed the configuration of the first working bandwidth.

[0123] Upon receiving a first message from the terminal device regarding the second working bandwidth, indicating that the terminal device supports not only the first working bandwidth but also the second working bandwidth, the network device determines that the terminal device supports full-band bandwidth, that is, the terminal device supports full-band bandwidth of the corresponding frequency band.

[0124] Upon receiving a second message from the terminal device regarding the second operating bandwidth, indicating that the terminal device supports the first operating bandwidth but not the second operating bandwidth, the network device determines that the terminal device only supports the first frequency band bandwidth. The first frequency band bandwidth includes the first operating bandwidth but does not include the second operating bandwidth.

[0125] In some embodiments, when the network device configures the working bandwidth of the terminal device based on the working bandwidth corresponding to the frequency band number n28, the frequency range corresponding to the first working bandwidth is 703MHz to 718MHz; the frequency range corresponding to the second working bandwidth is 733MHz to 743MHz, or 733MHz to 748MHz.

[0126] In some embodiments, the frequency range corresponding to the full-band bandwidth is 703MHz to 748MHz; the frequency range corresponding to the first band bandwidth is 703MHz to 733MHz; and the frequency range corresponding to the second band bandwidth is 718MHz to 748MHz. The first band bandwidth corresponds to Type A, and the second band bandwidth corresponds to Type B.

[0127] For example, upon receiving an RRC connection reconfiguration completion signaling from the terminal device regarding the first operating bandwidth, the network device determines that the terminal device supports Type A or full-band bandwidth. The network device then configures a second operating bandwidth for the terminal device via the RRC connection reconfiguration signaling, the frequency range of which is 733MHz to 748MHz. Upon receiving an RRC connection reconstruction signaling from the terminal device regarding the second operating bandwidth, the network device determines that the terminal device supports Type A. Upon receiving an RRC connection reconfiguration completion signaling from the terminal device regarding the second operating bandwidth, the network device determines that the terminal device supports full-band bandwidth.

[0128] In this embodiment, the network device can determine the frequency band bandwidth supported by the terminal device based on a first message about the first operating bandwidth and a first or second message about the second operating bandwidth, thereby improving the accuracy of the determined operating bandwidth.

[0129] like Figure 5 As shown, in some embodiments, the method further includes:

[0130] Step 504: Based on the second message sent by the terminal device regarding the first working bandwidth configured on the network side, determine that the terminal device supports the second frequency band bandwidth.

[0131] Here, upon receiving a second message from the terminal device regarding the first working bandwidth configured on the network side, it indicates that the terminal device does not support the first working bandwidth. The first and second working bandwidths belong to non-overlapping portions of Type A and Type B, respectively. If the terminal device does not support the first working bandwidth, the network device can quickly determine that the terminal device supports the second working bandwidth, thereby quickly determining that the terminal device only supports the second frequency band bandwidth, i.e., the terminal device only supports Type B. The second frequency band bandwidth includes the second working bandwidth but does not include the first working bandwidth.

[0132] For example, the network device configures a first working bandwidth for the terminal device through RRC connection reconfiguration signaling, and the frequency range corresponding to the first working bandwidth is 703MHz to 718MHz.

[0133] Upon receiving an RRC connection reconstruction signaling from the terminal device for the first working bandwidth, the network device determines that the terminal device supports Type B.

[0134] In practical applications, during the negotiation between network devices and terminal devices regarding the frequency band bandwidth supported by the terminal device, the network device can configure a second working bandwidth for the terminal device before configuring the first working bandwidth. For example... Figure 6As shown, in some embodiments, determining the frequency band bandwidth supported by the terminal device based on a first or second message sent by the terminal device regarding the network-side configured operating bandwidth includes:

[0135] Step 601: Receive a first message from the terminal device regarding the second working bandwidth configured on the network side;

[0136] Step 602: Configure a first operating bandwidth for the terminal device; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth;

[0137] Step 603: Based on the first message or second message sent by the terminal device regarding the first working bandwidth, determine the frequency band bandwidth supported by the terminal device.

[0138] Here, the network device configures a second working bandwidth for the terminal device. Upon receiving a first message from the terminal device regarding the second working bandwidth, the network device determines that the terminal device has completed the configuration of the second working bandwidth. Then, it configures a first working bandwidth for the terminal device and, based on the first or second message from the terminal device regarding the first working bandwidth, determines the frequency band bandwidth supported by the terminal device. Thus, the network device can accurately determine the frequency band bandwidth supported by the terminal device.

[0139] To accurately determine the frequency band bandwidth supported by the terminal device, in some embodiments, step 603, which involves determining the frequency band bandwidth supported by the terminal device based on a first message or a second message sent by the terminal device regarding the first operating bandwidth, includes:

[0140] Based on the first message sent by the terminal device regarding the first working bandwidth, it is determined that the terminal device supports full-band bandwidth;

[0141] Based on the second message sent by the terminal device regarding the first working bandwidth, it is determined that the terminal device supports the second frequency band bandwidth.

[0142] Here, considering that the network device configures the first working bandwidth for the terminal device after the terminal device has completed configuring the second working bandwidth, and upon receiving the first message sent by the terminal device for the first working bandwidth, indicating that the terminal device supports not only the second working bandwidth but also the first working bandwidth, the network device determines that the frequency band bandwidth supported by the terminal device includes both the first and second working bandwidths; that is, the terminal device supports the full frequency band bandwidth of the corresponding frequency band.

[0143] Upon receiving a second message from the terminal device regarding the first working bandwidth, indicating that the terminal device supports the second working bandwidth but does not support the first working bandwidth, the network device determines that the terminal device only supports the second frequency band bandwidth.

[0144] like Figure 6 As shown, in some embodiments, the method further includes:

[0145] Based on the second message sent by the terminal device regarding the second working bandwidth configured on the network side, it is determined that the terminal device supports the first frequency band bandwidth.

[0146] Here, when a second message is received from the terminal device regarding the second working bandwidth, it indicates that the terminal device does not support the second working bandwidth. The first working bandwidth and the second working bandwidth belong to the non-overlapping parts of Type A and Type B, respectively. When the terminal device does not support the second working bandwidth, the network device can quickly determine that the terminal device supports the first frequency band bandwidth, that is, the terminal device only supports Type A.

[0147] Implementation Option 2:

[0148] During the negotiation between network devices and terminal devices regarding the frequency band bandwidth supported by the terminal devices, the terminal devices can provide feedback on the working bandwidth configured on the network side through the Physical Random Access Channel (PRACH) and data packets, which are randomly accessed in the idle state.

[0149] like Figure 7 As shown, in some embodiments, in step 201, determining the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the operating bandwidth configured on the network side includes:

[0150] Step 701: Configure a first synchronization signal block (SSB) and a second SSB for the terminal device; the first physical random access channel (PRACH) of the first SSB is configured in the frequency range corresponding to the first working bandwidth; the second PRACH of the second SSB is configured in the frequency range corresponding to the second working bandwidth; the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth.

[0151] Step 702: Based on the PRACH and the first data packet received by the terminal device during random access, determine the frequency band bandwidth supported by the terminal device; wherein,

[0152] The first data packet represents the terminal device's response to the second data packet; the second data packet represents the first data packet sent by the network side.

[0153] Here, when the terminal device is in RRC idle state, the network device configures a first synchronization signal block (SSB) and a second SSB for the terminal device. When the network device detects that the terminal device is making random access on the first or second PRACH, it sends a second data packet to the terminal device, and the terminal device sends a first data packet to the network device. The first data packet is either an acknowledgment (ACK) or a non-acknowledgment (NACK) for the second data packet. Based on the operating bandwidth corresponding to the PRACH where the terminal device entered random access and based on the first data packet sent by the terminal device, the network device determines the frequency band bandwidth supported by the terminal device. Thus, the network device can accurately determine the frequency band bandwidth supported by the terminal device.

[0154] To more accurately determine the frequency band bandwidth supported by the terminal device, in some embodiments, step 702, which involves determining the frequency band bandwidth supported by the terminal device based on the PRACH initiated by the terminal device for random access and the first data packet, includes:

[0155] When the terminal device performs random access on the first PRACH, it sends the second data packet on the second working bandwidth. If the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth. If the received first data packet is NACK, it is determined that the terminal device supports first-band bandwidth.

[0156] When the terminal device performs random access on the second PRACH, it sends the second data packet on the first working bandwidth. If the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth. If the received first data packet is NACK, it is determined that the terminal device supports second-band bandwidth.

[0157] Here, when the network device detects a terminal device making a random access on the first PRACH, it determines whether the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth. At this point, the network device sends a second data packet to the terminal device on the second operating bandwidth, informing the terminal device that the network device sent the first data packet. Based on the first data packet returned by the terminal device, the network device further determines whether the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth. Specifically, if the received first data packet is ACK, the network device determines that the terminal device supports the full frequency band bandwidth; if the received first data packet is NACK, the network device determines that the terminal device supports the first frequency band bandwidth.

[0158] Specifically, if the terminal device receives the second data packet, the first data packet it sends to the network device is ACK; if it does not receive the second data packet, the first data packet it sends to the network device is NACK.

[0159] When a network device detects a terminal device randomly accessing the second PRACH, it determines whether the terminal device supports the second frequency band bandwidth or the full frequency band bandwidth. The network device then needs to send a second data packet to the terminal device on the first operating bandwidth. Based on the first data packet returned by the terminal device, it further determines whether the terminal device supports the second frequency band bandwidth or the full frequency band bandwidth. Specifically, if the received first data packet is ACK, it determines that the terminal device supports the full frequency band bandwidth; if the received first data packet is NACK, it determines that the terminal device supports the second frequency band bandwidth.

[0160] For example, the first PRACH of the first SSB is configured at 703-718MHz; the second PRACH of the second SSB is configured at 733MHz-743MHz, or 733MHz-748MHz.

[0161] When a terminal device performs random access on the first PRACH, the network device determines that the terminal device supports Type A or supports full-band bandwidth (Type A and Type B). At this time, the network device sends the first data packet to the terminal device on 703-718MHz. If the network device receives an ACK response from the terminal device for the first data packet, it determines that the terminal device supports both Type A and Type B. If the network device receives a NACK response from the terminal device for the first data packet, it determines that the terminal device only supports Type A.

[0162] When a terminal device performs random access on the second PRACH, the network device determines that the terminal device supports Type B or supports full-band bandwidth. In this case, the network device sends the first data packet to the terminal device on 733MHz~743MHz or 733MHz~748MHz. If the network device receives an ACK response from the terminal device for the first data packet, it determines that the terminal device supports full-band bandwidth. If the network device receives a NACK response from the terminal device for the first data packet, it determines that the terminal device only supports Type B.

[0163] Implementation Plan 3:

[0164] During the negotiation between network devices and terminal devices regarding the frequency band bandwidth supported by the terminal device, the network device can determine the frequency band bandwidth supported by the terminal device based on the data packets fed back by the terminal device in the connected state.

[0165] like Figure 8As shown, in some embodiments, in step 201, determining the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the operating bandwidth configured on the network side includes:

[0166] Step 801: Confirm that the random access of the terminal device is successful;

[0167] Step 802: Configure the initial operating bandwidth for the terminal device;

[0168] Step 803: Based on the first data packet and the third data packet sent by the terminal device, determine the frequency band bandwidth supported by the terminal device; wherein,

[0169] The initial operating bandwidth represents a third operating bandwidth located between the first and second operating bandwidths; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth; the first data packet represents the terminal device's feedback to the second data packet; the second data packet represents the first data packet sent by the network side; the third data packet represents the terminal device's feedback to the fourth data packet; and the fourth data packet represents the second data packet sent by the network side.

[0170] Here, after confirming that the terminal device has successfully accessed the network, the network device configures an initial working bandwidth for the terminal device. The frequency range corresponding to the initial working bandwidth is the overlapping part of the corresponding sub-band A and sub-band B.

[0171] The network device sends an initial data packet to the terminal device on either a first or second operating bandwidth. Upon receiving a first data packet returned by the terminal device in response to the initial data packet, the network device sends a second data packet to the terminal device on either the second or first operating bandwidth. Based on the third data packet returned by the terminal device in response to the second data packet, the network device determines the frequency band bandwidth supported by the terminal device. In this way, the network device can accurately determine the frequency band bandwidth supported by the terminal device.

[0172] For example, when the network device configures the working bandwidth of the terminal device based on the working bandwidth corresponding to the frequency band number n28, the frequency range corresponding to the first working bandwidth is 703MHz to 718MHz; the frequency range corresponding to the second working bandwidth is 733MHz to 743MHz, or 733MHz to 748MHz; and the frequency range corresponding to the third working bandwidth is 718MHz to 733MHz.

[0173] To more accurately determine the frequency band bandwidth supported by the terminal device, in some embodiments, in step 803, determining the frequency band bandwidth supported by the terminal device based on the first data packet and the third data packet sent by the terminal device includes:

[0174] The second data packet is sent on the first working bandwidth, and if the first data packet received is ACK, it is determined that the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth; if the first data packet received is NACK, it is determined that the terminal device supports the second frequency band bandwidth.

[0175] If the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth, the fourth data packet is sent on the second working bandwidth. If the received third data packet is ACK, it is determined that the terminal device supports the full frequency band bandwidth. If the received third data packet is NACK, it is determined that the terminal device supports the first frequency band bandwidth.

[0176] Here, as Figure 9 As shown, the network device sends a second data packet to the terminal device on the first operating bandwidth. If the received first data packet is NACK, it determines that the terminal device supports the second frequency band bandwidth.

[0177] If the received first data packet is an ACK, it is determined that the terminal device supports either the first frequency band bandwidth or the full frequency band bandwidth. In this case, the network device sends a fourth data packet on the second operating bandwidth. Based on the third data packet returned by the terminal device in response to the fourth data packet, it is further determined whether the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth. Specifically, if the received third data packet is an ACK, it is determined that the terminal device supports the full frequency band bandwidth; if the received third data packet is a NACK, it is determined that the terminal device supports the first frequency band bandwidth.

[0178] For example, the network device sends the first data packet on 703-718MHz, and upon receiving a NACK response from the terminal device for the first data packet, determines that the terminal device supports Type B.

[0179] Upon receiving an ACK from the terminal device in response to the first data packet, it is determined that the terminal device supports Type A, or supports both Type A and Type B. At this point, the network device sends a second data packet to the terminal device in the 733-748MHz or 733-743MHz range. If the network device receives an ACK from the terminal device in response to this second data packet, it is determined that the terminal device supports both Type A and Type B; if it receives a NACK from the terminal device in response to this second data packet, it is determined that the terminal device supports Type A.

[0180] To more accurately determine the frequency band bandwidth supported by the terminal device, in some embodiments, in step 803, determining the frequency band bandwidth supported by the terminal device based on the first data packet and the third data packet sent by the terminal device includes:

[0181] The second data packet is sent on the second working bandwidth, and if the first data packet received is ACK, it is determined that the terminal device supports full-band bandwidth or second-band bandwidth; if the first data packet received is NACK, it is determined that the terminal device supports first-band bandwidth.

[0182] If the terminal device supports full-band bandwidth or second-band bandwidth, the fourth data packet is sent on the first working bandwidth. If the received third data packet is ACK, it is determined that the terminal device supports the full-band bandwidth. If the received third data packet is NACK, it is determined that the terminal device supports the second-band bandwidth.

[0183] Here, as Figure 10 As shown, the network device sends a second data packet to the terminal device on the second operating bandwidth. If the received first data packet is NACK, it determines that the terminal device supports the first frequency band bandwidth.

[0184] If the first received data packet is an ACK, it is determined that the terminal device supports either the second frequency band bandwidth or the full frequency band bandwidth. At this point, the network device sends a fourth data packet on the first operating bandwidth. Based on the third data packet returned by the terminal device in response to the fourth data packet, it is further determined whether the terminal device supports the second frequency band bandwidth or the full frequency band bandwidth. Specifically, if the received third data packet is an ACK, it is determined that the terminal device supports the full frequency band bandwidth; if the received third data packet is a NACK, it is determined that the terminal device supports the second frequency band bandwidth.

[0185] For example, the network device sends the first data packet on 733-748MHz or 733-743MHz, and upon receiving a NACK response from the terminal device for the first data packet, it determines that the terminal device supports Type A.

[0186] Upon receiving an ACK from the terminal device in response to the first data packet, the network device determines that the terminal device supports Type B, or supports both Type A and Type B. At this point, the network device sends a second data packet to the terminal device in the 703-718MHz band. If the network device receives an ACK from the terminal device in response to this second data packet, it determines that the terminal device supports both Type A and Type B; if the network device receives a NACK from the terminal device in response to this second data packet, it determines that the terminal device supports Type B.

[0187] Implementation Plan 4:

[0188] During the negotiation between network devices and terminal devices regarding the frequency band bandwidth supported by the terminal device, the network device can determine the frequency band bandwidth supported by the terminal device based on the reference signal strength fed back by the terminal device in the connected state.

[0189] like Figure 11 As shown, in some embodiments, in step 201, determining the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the operating bandwidth configured on the network side includes:

[0190] Step 1101: Configure a first BWP and a second BWP for the terminal device; the first BWP corresponds to a first frequency range; the second BWP corresponds to a second frequency range; the first frequency range is lower than the second frequency range;

[0191] Step 1102: Based on the first reference signal strength and the second reference signal strength, determine the frequency band bandwidth supported by the terminal device; wherein,

[0192] The first reference signal strength characterizes the signal strength of the reference signal corresponding to the first BWP fed back by the terminal device; the second reference signal strength characterizes the signal strength of the reference signal corresponding to the second BWP fed back by the terminal device.

[0193] Here, the network device allocates a set of uplink and downlink reference signals to the first BWP and also allocates a set of uplink and downlink reference signals to the second BWP. The uplink and downlink reference signals corresponding to the first BWP are different from those corresponding to the second BWP. The reference signals include, but are not limited to, Sounding Reference Signals (SRS) and Channel State Information Reference Signals (CSI-RS). The strengths of the first and second reference signals can be either uplink or downlink reference signal strengths.

[0194] The network device receives the first reference signal strength and the second reference signal strength reported by the terminal device, and determines the frequency band bandwidth supported by the terminal device based on the first reference signal strength and the second reference signal strength, thus accurately determining the frequency band bandwidth supported by the terminal device.

[0195] In some embodiments, determining the frequency band bandwidth supported by the terminal device based on the first reference signal strength and the second reference signal strength includes:

[0196] The frequency band bandwidth supported by the terminal device is determined based on the absolute value of the difference between the first reference signal strength and the second reference signal strength.

[0197] Here, the network device determines the absolute value of the difference between the first reference signal strength and the second reference signal strength. Based on the determined absolute value of the difference and a set threshold, it determines the frequency band bandwidth supported by the terminal device, thereby improving the accuracy of the determined operating bandwidth.

[0198] In some embodiments, determining the frequency band bandwidth supported by the terminal device based on the absolute value of the difference between the first reference signal strength and the second reference signal strength includes:

[0199] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is less than or equal to a set threshold, it is determined that the terminal device supports full-band bandwidth.

[0200] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is greater than the set threshold, and the first reference signal strength is greater than the second reference signal strength, it is determined that the terminal device supports the first frequency band bandwidth.

[0201] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is greater than the set threshold, and the first reference signal strength is less than the second reference signal strength, it is determined that the terminal device supports the second frequency band bandwidth.

[0202] Here, after determining the absolute value of the difference between the first reference signal strength and the second reference signal strength, the network device compares the determined absolute value of the difference with a set threshold to obtain a comparison result. If the comparison result indicates that the determined absolute value of the difference is less than or equal to the set threshold, it is determined that the terminal device supports full-band bandwidth.

[0203] If the absolute value of the difference determined by the comparison result is greater than a set threshold, it is determined whether the strength of the first reference signal is greater than the strength of the second reference signal. If the strength of the first reference signal is greater than the strength of the second reference signal, it is determined that the terminal device supports the first frequency band bandwidth; if the strength of the first reference signal is less than the strength of the second reference signal, it is determined that the terminal device supports the second frequency band bandwidth.

[0204] A threshold value is set to characterize the error control value. In practical applications, the threshold value can be set according to the actual situation. For example, the threshold value can be one-quarter of the sum of the strength of the first reference signal and the strength of the second reference signal.

[0205] For example, the first BWP corresponds to 703MHz to 718MHz; the second BWP corresponds to 733MHz to 743MHz, or 733MHz to 748MHz. When the absolute value of the determined difference is less than or equal to a set threshold, the terminal device supports the full frequency band corresponding to n28, 703MHz to 748MHz.

[0206] If the absolute value of the determined difference is greater than the set threshold and S1 is greater than S2, the terminal device only supports Type A corresponding to n28, 703MHz~733MHz.

[0207] If the absolute value of the determined difference is greater than the set threshold and S1 is less than S2, the terminal device only supports Type B corresponding to n28, that is, 718MHz~748MHz.

[0208] In this embodiment, the network device can determine the frequency band bandwidth supported by the terminal device based on the absolute value of the difference between the first reference signal strength and the second reference signal strength and a set threshold, thereby improving the accuracy of the determined working bandwidth.

[0209] To implement the method of the embodiments of this application, the embodiments of this application also provide a terminal bandwidth capability identification device, such as... Figure 12 As shown, the terminal bandwidth capability identification device includes:

[0210] The determining unit 121 is used to determine the frequency band bandwidth supported by the terminal device based on the feedback from the terminal device regarding the working bandwidth configured on the network side.

[0211] In some embodiments, the determining unit 121 is specifically used for:

[0212] Based on the first or second message sent by the terminal device regarding the working bandwidth configured on the network side, the frequency band bandwidth supported by the terminal device is determined.

[0213] In some embodiments, the terminal bandwidth capability identification device further includes:

[0214] The first receiving unit is configured to receive a first message from the terminal device regarding the first operating bandwidth configured on the network side.

[0215] The determining unit 121 is specifically used for:

[0216] The terminal device is configured with a second operating bandwidth; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth.

[0217] Based on the first or second message sent by the terminal device regarding the second working bandwidth, the frequency band bandwidth supported by the terminal device is determined.

[0218] In some embodiments, the determining unit 121 is specifically used for:

[0219] Based on the first message sent by the terminal device regarding the second working bandwidth, it is determined that the terminal device supports full-band bandwidth;

[0220] Based on the second message sent by the terminal device regarding the second working bandwidth, it is determined that the terminal device supports the first frequency band bandwidth.

[0221] In some embodiments, the determining unit 121 is further configured to: determine that the terminal device supports a second frequency band bandwidth based on a second message sent by the terminal device regarding a first operating bandwidth configured on the network side.

[0222] In some embodiments, the terminal bandwidth capability identification device further includes:

[0223] The second receiving unit is used to receive a first message sent by the terminal device regarding the second working bandwidth configured on the network side;

[0224] The determining unit 121 is specifically used for:

[0225] The terminal device is configured with a first operating bandwidth; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth.

[0226] Based on the first or second message sent by the terminal device regarding the first working bandwidth, the frequency band bandwidth supported by the terminal device is determined.

[0227] In some embodiments, the determining unit 121 is specifically used for:

[0228] Based on the first message sent by the terminal device regarding the first working bandwidth, it is determined that the terminal device supports full-band bandwidth;

[0229] Based on the second message sent by the terminal device regarding the first working bandwidth, it is determined that the terminal device supports the second frequency band bandwidth.

[0230] In some embodiments, the determining unit 121 is further configured to: determine that the terminal device supports a first frequency band bandwidth based on a second message sent by the terminal device regarding a second operating bandwidth configured on the network side.

[0231] In some embodiments, the working bandwidth configured on the network side includes a portion of the bandwidth BWP.

[0232] In some embodiments, the first message includes Radio Resource Control (RRC) connection reconfiguration completion signaling; the second message includes RRC connection re-establishment signaling.

[0233] In some embodiments, the determining unit 121 is specifically used for:

[0234] A first synchronization signal block (SSB) and a second SSB are configured for the terminal device; the first physical random access channel (PRACH) of the first SSB is configured in a frequency range corresponding to the first working bandwidth; the second PRACH of the second SSB is configured in a frequency range corresponding to the second working bandwidth; the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth.

[0235] Based on the PRACH and the first data packet received by the terminal device during random access, the frequency band bandwidth supported by the terminal device is determined; wherein,

[0236] The first data packet represents the terminal device's response to the second data packet; the second data packet represents the first data packet sent by the network side.

[0237] In some embodiments, the determining unit 121 is specifically used for:

[0238] When the terminal device performs random access on the first PRACH, it sends the second data packet on the second working bandwidth. If the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth. If the received first data packet is NACK, it is determined that the terminal device supports first-band bandwidth.

[0239] When the terminal device performs random access on the second PRACH, it sends the second data packet on the first working bandwidth. If the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth. If the received first data packet is NACK, it is determined that the terminal device supports second-band bandwidth.

[0240] In some embodiments, the determining unit 121 is specifically used for:

[0241] The random access of the terminal device has been confirmed to be successful;

[0242] Configure the initial operating bandwidth for the terminal device;

[0243] Based on the first data packet and the third data packet sent by the terminal device, the frequency band bandwidth supported by the terminal device is determined; wherein,

[0244] The initial operating bandwidth represents a third operating bandwidth located between the first and second operating bandwidths; the frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth; the first data packet represents the terminal device's feedback to the second data packet; the second data packet represents the first data packet sent by the network side; the third data packet represents the terminal device's feedback to the fourth data packet; and the fourth data packet represents the second data packet sent by the network side.

[0245] In some embodiments, the determining unit 121 is specifically used for:

[0246] The second data packet is sent on the first working bandwidth, and if the first data packet received is ACK, it is determined that the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth; if the first data packet received is NACK, it is determined that the terminal device supports the second frequency band bandwidth.

[0247] If the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth, the fourth data packet is sent on the second working bandwidth. If the received third data packet is ACK, it is determined that the terminal device supports the full frequency band bandwidth. If the received third data packet is NACK, it is determined that the terminal device supports the first frequency band bandwidth.

[0248] In some embodiments, the determining unit 121 is specifically used for:

[0249] The second data packet is sent on the second working bandwidth, and if the first data packet received is ACK, it is determined that the terminal device supports full-band bandwidth or second-band bandwidth; if the first data packet received is NACK, it is determined that the terminal device supports first-band bandwidth.

[0250] If the terminal device supports full-band bandwidth or second-band bandwidth, the fourth data packet is sent on the first working bandwidth. If the received third data packet is ACK, it is determined that the terminal device supports the full-band bandwidth. If the received third data packet is NACK, it is determined that the terminal device supports the second-band bandwidth.

[0251] In some embodiments, the determining unit 121 is specifically used for:

[0252] Configure a first BWP and a second BWP for the terminal device; the first BWP corresponds to a first frequency range; the second BWP corresponds to a second frequency range; the first frequency range is lower than the second frequency range.

[0253] Based on the first reference signal strength and the second reference signal strength, the frequency band bandwidth supported by the terminal device is determined; wherein,

[0254] The first reference signal strength characterizes the signal strength of the reference signal corresponding to the first BWP fed back by the terminal device; the second reference signal strength characterizes the signal strength of the reference signal corresponding to the second BWP fed back by the terminal device.

[0255] In some embodiments, the determining unit 121 is specifically used to: determine the frequency band bandwidth supported by the terminal device based on the absolute value of the difference between the first reference signal strength and the second reference signal strength.

[0256] In some embodiments, the determining unit 121 is specifically used for:

[0257] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is less than or equal to a set threshold, it is determined that the terminal device supports full-band bandwidth.

[0258] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is greater than the set threshold, and the first reference signal strength is greater than the second reference signal strength, it is determined that the terminal device supports the first frequency band bandwidth.

[0259] If the absolute value of the difference between the first reference signal strength and the second reference signal strength is greater than the set threshold, and the first reference signal strength is less than the second reference signal strength, then the terminal device is determined to support the second frequency band bandwidth.

[0260] In some embodiments, the frequency range corresponding to the first operating bandwidth is 703MHz to 718MHz; the frequency range corresponding to the second operating bandwidth is 733MHz to 743MHz, or 733MHz to 748MHz.

[0261] In some embodiments, the frequency range corresponding to the full-band bandwidth is 703MHz to 748MHz; the frequency range corresponding to the first band bandwidth is 703MHz to 733MHz; and the frequency range corresponding to the second band bandwidth is 718MHz to 748MHz.

[0262] In some embodiments, the terminal bandwidth capability identification device further includes:

[0263] The update unit is used to adjust the bandwidth of the terminal device to the operating bandwidth configured for the terminal device based on the frequency band bandwidth supported by the terminal device.

[0264] In practical applications, the determining unit 121 and the updating unit can be implemented using a processor in the terminal bandwidth capability identification device, such as a central processing unit (CPU), digital signal processor (DSP), microcontroller unit (MCU), or field-programmable gate array (FPGA). The first receiving unit and the second receiving unit can be jointly implemented using the processor and communication interface in the terminal bandwidth capability identification device.

[0265] It should be noted that the terminal bandwidth capability identification device provided in the above embodiments is only illustrated by the division of the above-described program modules when identifying the terminal bandwidth capability. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the terminal bandwidth capability identification device and the terminal bandwidth capability identification method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0266] Based on the hardware implementation of the above program modules, and in order to implement the method of the embodiments of this application, the embodiments of this application also provide a network device. Figure 13 This is a schematic diagram of the hardware structure of the network device provided in the embodiments of this application, such as... Figure 13 As shown, network device 13 includes:

[0267] The communication interface 131 is capable of exchanging information with other devices such as terminal devices and network devices;

[0268] The processor 132 is connected to the communication interface 131 to enable information interaction with other devices. When running a computer program, it executes the terminal bandwidth capability identification method provided by one or more of the above-mentioned technical solutions. The computer program is stored in the memory 133.

[0269] Of course, in practical applications, the various components in network device 13 are coupled together through bus system 134. It can be understood that bus system 134 is used to implement communication between these components. In addition to a data bus, bus system 134 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 13 The general labeled all buses as Bus System 134.

[0270] The memory 133 in this embodiment is used to store various types of data to support the operation of the network device 13. Examples of such data include any computer program used to operate on the network device 13.

[0271] It is understood that memory 133 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memory 133 described in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0272] The methods disclosed in the embodiments of this application can be applied to or implemented by the processor 132. The processor 132 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 132 or by instructions in the form of software. The processor 132 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 132 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the memory 133. The processor 132 reads the program in the memory 133 and completes the steps of the aforementioned method in combination with its hardware.

[0273] Optionally, when the processor 132 executes the program, it implements the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, these will not be described in detail here.

[0274] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, such as a first memory 133 storing a computer program, which can be executed by the processor 132 of a network device to complete the steps described in the aforementioned method. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0275] In the several embodiments provided in this application, it should be understood that the disclosed apparatus, network devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0276] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0277] In addition, each functional unit in the various embodiments of this application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0278] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media that can store program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0279] Alternatively, if the integrated units described above are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0280] It should be noted that the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0281] It should be noted that the term "and / or" in the embodiments of this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more of a plurality of elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0282] In addition, in this application example, terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0283] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for identifying terminal bandwidth capability, characterized in that, Applied to network devices, the method includes: Based on the feedback from the terminal device regarding the working bandwidth configured on the network side, the frequency band bandwidth supported by the terminal device is determined; Among these, determining the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the network-side configured operating bandwidth includes: The terminal device receives feedback regarding the first working bandwidth configured on the network side. The first working bandwidth is either a first working bandwidth or a second working bandwidth, and the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth. Upon receiving a first message from the terminal device regarding the first working bandwidth configured on the network side, a second working bandwidth is configured for the terminal device. The second working bandwidth is the working bandwidth other than the first working bandwidth among the first and second working bandwidths. The first message includes Radio Resource Control (RRC) connection reconfiguration completion signaling. Based on the feedback sent by the terminal device regarding the second working bandwidth, the frequency band bandwidth supported by the terminal device is determined; Alternatively, based on feedback from the terminal device regarding the operating bandwidth configured on the network side, the frequency band bandwidth supported by the terminal device is determined, including: A first synchronization signal block (SSB) and a second SSB are configured for the terminal device; the first physical random access channel (PRACH) of the first SSB is configured in the frequency range corresponding to the first working bandwidth; the second PRACH of the second SSB is configured in the frequency range corresponding to the second working bandwidth; the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth. Based on the PRACH and the first data packet received by the terminal device during random access, the frequency band bandwidth supported by the terminal device is determined; wherein, The first data packet represents the terminal device's response to the second data packet; the second data packet represents the first data packet sent by the network side; the second data packet is sent on the working bandwidth other than the working bandwidth where the terminal device enters random access PRACH, which is located in the first working bandwidth and the second working bandwidth. Alternatively, based on feedback from the terminal device regarding the operating bandwidth configured on the network side, the frequency band bandwidth supported by the terminal device is determined, including: The random access of the terminal device has been confirmed to be successful; Configure an initial operating bandwidth for the terminal device. The initial operating bandwidth represents a third operating bandwidth located between a first operating bandwidth and a second operating bandwidth. The frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth. Based on the first data packet and the third data packet sent by the terminal device, the frequency band bandwidth supported by the terminal device is determined; the first data packet represents the terminal device's feedback to the second data packet; the second data packet represents the first data packet sent by the network side, and the second data packet is sent on the first working bandwidth; the third data packet represents the terminal device's feedback to the fourth data packet; the fourth data packet represents the second data packet sent by the network side, and the fourth data packet is sent on the second working bandwidth; wherein, the first working bandwidth is either the first working bandwidth or the second working bandwidth; the second working bandwidth is the working bandwidth other than the first working bandwidth between the first working bandwidth and the second working bandwidth. Alternatively, based on feedback from the terminal device regarding the operating bandwidth configured on the network side, the frequency band bandwidth supported by the terminal device is determined, including: Configure a first BWP and a second BWP for the terminal device; the first BWP corresponds to a first frequency range; the second BWP corresponds to a second frequency range; the first frequency range is lower than the second frequency range. Based on the first reference signal strength and the second reference signal strength, the frequency band bandwidth supported by the terminal device is determined; wherein, The first reference signal strength characterizes the signal strength of the reference signal corresponding to the first BWP fed back by the terminal device; the second reference signal strength characterizes the signal strength of the reference signal corresponding to the second BWP fed back by the terminal device.

2. The method according to claim 1, characterized in that, The first working bandwidth is the first working bandwidth, and the second working bandwidth is the second working bandwidth; Receiving feedback from the terminal device regarding the first working bandwidth configured on the network side includes: receiving a first message from the terminal device regarding the first working bandwidth configured on the network side; Configuring a second working bandwidth for the terminal device includes: configuring a second working bandwidth for the terminal device; The step of determining the frequency band bandwidth supported by the terminal device based on the feedback sent by the terminal device regarding the second working bandwidth includes: determining the frequency band bandwidth supported by the terminal device based on the first message or the second message sent by the terminal device regarding the second working bandwidth.

3. The method according to claim 2, characterized in that, The step of determining the frequency band bandwidth supported by the terminal device based on the first or second message sent by the terminal device regarding the second working bandwidth includes: Based on the first message sent by the terminal device regarding the second working bandwidth, it is determined that the terminal device supports full-band bandwidth; Based on the second message sent by the terminal device regarding the second working bandwidth, it is determined that the terminal device supports the first frequency band bandwidth.

4. The method according to claim 2, characterized in that, The process of receiving feedback from the terminal device regarding the first operating bandwidth configured on the network side also includes: Based on the second message sent by the terminal device regarding the first working bandwidth configured on the network side, it is determined that the terminal device supports the second frequency band bandwidth.

5. The method according to claim 1, characterized in that, The first working bandwidth is the second working bandwidth, and the second working bandwidth is the first working bandwidth; Receiving feedback from the terminal device regarding the first working bandwidth configured on the network side includes: receiving a first message from the terminal device regarding the second working bandwidth configured on the network side; Configuring a second working bandwidth for the terminal device includes: configuring a first working bandwidth for the terminal device; The step of determining the frequency band bandwidth supported by the terminal device based on the feedback sent by the terminal device regarding the second working bandwidth includes: determining the frequency band bandwidth supported by the terminal device based on the first message or the second message sent by the terminal device regarding the first working bandwidth.

6. The method according to claim 5, characterized in that, The step of determining the frequency band bandwidth supported by the terminal device based on the first message or second message sent by the terminal device regarding the first working bandwidth includes: Based on the first message sent by the terminal device regarding the first working bandwidth, it is determined that the terminal device supports full-band bandwidth; Based on the second message sent by the terminal device regarding the first working bandwidth, it is determined that the terminal device supports the second frequency band bandwidth.

7. The method according to claim 5, characterized in that, The process of receiving feedback from the terminal device regarding the first operating bandwidth configured on the network side also includes: Based on the second message sent by the terminal device regarding the second working bandwidth configured on the network side, it is determined that the terminal device supports the first frequency band bandwidth.

8. The method according to any one of claims 1 to 7, characterized in that, The working bandwidth configured on the network side includes a portion of the bandwidth BWP.

9. The method according to any one of claims 2 to 7, characterized in that, The second message includes RRC connection re-establishment signaling.

10. The method according to claim 1, characterized in that, The step of determining the frequency band bandwidth supported by the terminal device based on the PRACH initiated by the terminal device for random access and the first data packet includes: When the terminal device performs random access on the first PRACH, it sends the second data packet on the second working bandwidth. If the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth. If the received first data packet is NACK, it is determined that the terminal device supports first-band bandwidth. When the terminal device performs random access on the second PRACH, it sends the second data packet on the first working bandwidth. If the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth. If the received first data packet is NACK, it is determined that the terminal device supports second-band bandwidth.

11. The method according to claim 1, characterized in that, The step of determining the frequency band bandwidth supported by the terminal device based on the first data packet and the third data packet sent by the terminal device includes: The first working bandwidth is a first working bandwidth, and the second working bandwidth is a second working bandwidth; the second data packet is sent on the first working bandwidth, and if the received first data packet is ACK, it is determined that the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth, and if the received first data packet is NACK, it is determined that the terminal device supports the second frequency band bandwidth; If the terminal device supports the first frequency band bandwidth or the full frequency band bandwidth, the fourth data packet is sent on the second working bandwidth. If the received third data packet is ACK, it is determined that the terminal device supports the full frequency band bandwidth. If the received third data packet is NACK, it is determined that the terminal device supports the first frequency band bandwidth.

12. The method according to claim 1, characterized in that, The step of determining the frequency band bandwidth supported by the terminal device based on the first data packet and the third data packet sent by the terminal device includes: The first working bandwidth is the second working bandwidth, and the second working bandwidth is the first working bandwidth; the second data packet is sent on the second working bandwidth, and if the received first data packet is ACK, it is determined that the terminal device supports full-band bandwidth or second-band bandwidth, and if the received first data packet is NACK, it is determined that the terminal device supports first-band bandwidth; If the terminal device supports full-band bandwidth or second-band bandwidth, the fourth data packet is sent on the first working bandwidth. If the received third data packet is ACK, it is determined that the terminal device supports the full-band bandwidth. If the received third data packet is NACK, it is determined that the terminal device supports the second-band bandwidth.

13. The method according to claim 1, characterized in that, Determining the frequency band bandwidth supported by the terminal device based on the first reference signal strength and the second reference signal strength includes: The frequency band bandwidth supported by the terminal device is determined based on the absolute value of the difference between the first reference signal strength and the second reference signal strength.

14. The method according to claim 13, characterized in that, Determining the frequency band bandwidth supported by the terminal device based on the absolute value of the difference between the first reference signal strength and the second reference signal strength includes: If the absolute value of the difference between the first reference signal strength and the second reference signal strength is less than or equal to a set threshold, it is determined that the terminal device supports full-band bandwidth. If the absolute value of the difference between the first reference signal strength and the second reference signal strength is greater than the set threshold, and the first reference signal strength is greater than the second reference signal strength, it is determined that the terminal device supports the first frequency band bandwidth. If the absolute value of the difference between the first reference signal strength and the second reference signal strength is greater than the set threshold, and the first reference signal strength is less than the second reference signal strength, then the terminal device is determined to support the second frequency band bandwidth.

15. The method according to any one of claims 1 to 7, 10 to 14, characterized in that, The frequency range corresponding to the first operating bandwidth is 703MHz~718MHz; the frequency range corresponding to the second operating bandwidth is 733MHz~743MHz, or 733MHz~748MHz.

16. The method according to any one of claims 10, 11, 12, and 14, characterized in that, The full-band bandwidth corresponds to a frequency range of 703MHz to 748MHz; the first-band bandwidth corresponds to a frequency range of 703MHz to 733MHz; and the second-band bandwidth corresponds to a frequency range of 718MHz to 748MHz.

17. The method according to claim 1, characterized in that, The method further includes: Based on the frequency band bandwidth supported by the terminal device, adjust to the working bandwidth configured for the terminal device.

18. A device for identifying terminal bandwidth capability, characterized in that, include: The determining unit is used to determine the frequency band bandwidth supported by the terminal device based on the feedback from the terminal device regarding the working bandwidth configured on the network side. The determining unit is specifically used for: The terminal device receives feedback regarding the first working bandwidth configured on the network side. The first working bandwidth is either a first working bandwidth or a second working bandwidth, and the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth. Upon receiving a first message from the terminal device regarding the first working bandwidth configured on the network side, a second working bandwidth is configured for the terminal device. The second working bandwidth is the working bandwidth other than the first working bandwidth among the first and second working bandwidths. The first message includes Radio Resource Control (RRC) connection reconfiguration completion signaling. Based on the feedback sent by the terminal device regarding the second working bandwidth, the frequency band bandwidth supported by the terminal device is determined; Alternatively, the determining unit is specifically used for: A first synchronization signal block (SSB) and a second SSB are configured for the terminal device; the first physical random access channel (PRACH) of the first SSB is configured in the frequency range corresponding to the first working bandwidth; the second PRACH of the second SSB is configured in the frequency range corresponding to the second working bandwidth; the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth. Based on the PRACH and the first data packet received by the terminal device during random access, the frequency band bandwidth supported by the terminal device is determined; wherein, The first data packet represents the terminal device's response to the second data packet; the second data packet represents the first data packet sent by the network side; the second data packet is sent on the working bandwidth other than the working bandwidth where the terminal device enters random access PRACH, which is located in the first working bandwidth and the second working bandwidth. Alternatively, the determining unit is specifically used for: The random access of the terminal device has been confirmed to be successful; Configure an initial operating bandwidth for the terminal device. The initial operating bandwidth represents a third operating bandwidth located between a first operating bandwidth and a second operating bandwidth. The frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth. Based on the first data packet and the third data packet sent by the terminal device, the frequency band bandwidth supported by the terminal device is determined; the first data packet represents the terminal device's feedback to the second data packet; the second data packet represents the first data packet sent by the network side, and the second data packet is sent on the first working bandwidth; the third data packet represents the terminal device's feedback to the fourth data packet; the fourth data packet represents the second data packet sent by the network side, and the fourth data packet is sent on the second working bandwidth; wherein, the first working bandwidth is either the first working bandwidth or the second working bandwidth; the second working bandwidth is the working bandwidth other than the first working bandwidth between the first working bandwidth and the second working bandwidth. Alternatively, the determining unit is specifically used for: Configure a first BWP and a second BWP for the terminal device; the first BWP corresponds to a first frequency range; the second BWP corresponds to a second frequency range; the first frequency range is lower than the second frequency range. Based on the first reference signal strength and the second reference signal strength, the frequency band bandwidth supported by the terminal device is determined; wherein, The first reference signal strength characterizes the signal strength of the reference signal corresponding to the first BWP fed back by the terminal device; the second reference signal strength characterizes the signal strength of the reference signal corresponding to the second BWP fed back by the terminal device.

19. A network device, characterized in that, Includes processor and communication interface, among which, The processor is used to determine the frequency band bandwidth supported by the terminal device based on feedback from the terminal device regarding the working bandwidth configured on the network side. The processor is specifically used for: The terminal device receives feedback regarding the first working bandwidth configured on the network side. The first working bandwidth is either a first working bandwidth or a second working bandwidth, and the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth. Upon receiving a first message from the terminal device regarding the first working bandwidth configured on the network side, a second working bandwidth is configured for the terminal device. The second working bandwidth is the working bandwidth other than the first working bandwidth among the first and second working bandwidths. The first message includes Radio Resource Control (RRC) connection reconfiguration completion signaling. Based on the feedback sent by the terminal device regarding the second working bandwidth, the frequency band bandwidth supported by the terminal device is determined; Alternatively, the processor is specifically used for: A first synchronization signal block (SSB) and a second SSB are configured for the terminal device; the first physical random access channel (PRACH) of the first SSB is configured in the frequency range corresponding to the first working bandwidth; the second PRACH of the second SSB is configured in the frequency range corresponding to the second working bandwidth; the frequency range corresponding to the first working bandwidth is lower than the frequency range corresponding to the second working bandwidth. Based on the PRACH and the first data packet received by the terminal device during random access, the frequency band bandwidth supported by the terminal device is determined; wherein, The first data packet represents the terminal device's response to the second data packet; the second data packet represents the first data packet sent by the network side; the second data packet is sent on the working bandwidth other than the working bandwidth where the terminal device enters random access PRACH, which is located in the first working bandwidth and the second working bandwidth. Alternatively, the processor is specifically used for: The random access of the terminal device has been confirmed to be successful; Configure an initial operating bandwidth for the terminal device. The initial operating bandwidth represents a third operating bandwidth located between a first operating bandwidth and a second operating bandwidth. The frequency range corresponding to the first operating bandwidth is lower than the frequency range corresponding to the second operating bandwidth. Based on the first data packet and the third data packet sent by the terminal device, the frequency band bandwidth supported by the terminal device is determined; the first data packet represents the terminal device's feedback to the second data packet; the second data packet represents the first data packet sent by the network side, and the second data packet is sent on the first working bandwidth; the third data packet represents the terminal device's feedback to the fourth data packet; the fourth data packet represents the second data packet sent by the network side, and the fourth data packet is sent on the second working bandwidth; wherein, the first working bandwidth is either the first working bandwidth or the second working bandwidth; the second working bandwidth is the working bandwidth other than the first working bandwidth between the first working bandwidth and the second working bandwidth. Alternatively, the processor is specifically used for: Configure a first BWP and a second BWP for the terminal device; the first BWP corresponds to a first frequency range; the second BWP corresponds to a second frequency range; the first frequency range is lower than the second frequency range. Based on the first reference signal strength and the second reference signal strength, the frequency band bandwidth supported by the terminal device is determined; wherein, The first reference signal strength characterizes the signal strength of the reference signal corresponding to the first BWP fed back by the terminal device; the second reference signal strength characterizes the signal strength of the reference signal corresponding to the second BWP fed back by the terminal device.

20. A network device, characterized in that, This includes a processor and memory for storing computer programs that can run on the processor. When the processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 17.

21. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 17.

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