BWP rollback method, device, equipment and storage medium

Abstract

The present application discloses a BWP fallback method, device, equipment and storage medium, which relates to the field of mobile communications. The method includes: in response to the expiration of a first timer with a currently monitored BWP, a first type of terminal determines a default BWP; wherein the default BWP is a target BWP to which the terminal switches from the currently monitored BWP, and the default BWP is determined according to at least one of the following methods: a preset rule, indication information of a network device, and a communication protocol. The present application solves the problem that the terminal cannot determine the default BWP based on the downlink BWP to complete the fallback, improves the accuracy of determining the default BWP, and thereby improves the efficiency of the terminal fallback.

Description

Technical Field

[0001] The present application relates to the field of mobile communications, and in particular to a BWP (Band Width Part) fallback method, apparatus, device and storage medium. Background Art

[0002] In the NR (New Radio) system, a timer can be configured for a serving cell. If the terminal switches to a certain bandwidth part (Band Width Part, BWP) and does not detect PDCCH (Physical Downlink Control Channel) within the time specified by the BWP, the terminal needs to switch to the default BWP.

[0003] However, if a downlink BWP is configured separately for the terminal, multiple downlink BWPs will be included, and the terminal cannot determine the default BWP based on the downlink BWP to complete the fallback. Therefore, how the terminal falls back to the default BWP is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a BWP fallback method, apparatus, device and storage medium, which solves the problem that the terminal cannot determine the default BWP based on the downlink BWP to complete the fallback, improves the accuracy of determining the default BWP, and thus improves the efficiency of the terminal fallback. The technical solution is as follows:

[0005] According to one aspect of the present application, a BWP fallback method is provided, the method being executed by a first type terminal, the method comprising:

[0006] In response to a first timer with a currently monitored BWP expiring, the first type of terminal determines a default BWP;

[0007] The default BWP is a target BWP to which the terminal switches from the currently monitored BWP, and the default BWP is determined according to at least one of the following methods:

[0008] Preset rules,

[0009] Indicative information for network devices, and,

[0010] Communication protocol.

[0011] According to one aspect of the present application, a BWP fallback method is provided, the method being executed by a network device, and the method comprising:

[0012] In response to the timer corresponding to the first type of terminal expiring, the network device determines a default BWP for communicating with the first type of terminal, the default BWP being a target BWP to which the network device switches from a current BWP;

[0013] The default BWP is determined according to at least one of the following methods:

[0014] Preset rules, and

[0015] Communication protocol.

[0016] According to one aspect of the present application, a BWP rollback device is provided, the device comprising:

[0017] a determination module configured to determine, in response to a first timer corresponding to a currently monitored BWP expiring, a default BWP for the first type of terminal;

[0018] The default BWP is a target BWP to which the terminal switches from the currently monitored BWP, and the default BWP is determined according to at least one of the following methods:

[0019] Preset rules,

[0020] Indicative information for network devices, and,

[0021] Communication protocol.

[0022] According to one aspect of the present application, a BWP rollback device is provided, the device comprising:

[0023] a determination module configured to, in response to a timer corresponding to a first type of terminal expiring, determine, by the network device, a default BWP for communicating with the first type of terminal, the default BWP being a target BWP to which the network device switches from a current BWP;

[0024] The default BWP is determined according to at least one of the following methods:

[0025] Preset rules, and

[0026] Communication protocol.

[0027] According to one aspect of the present application, a terminal is provided, comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the BWP fallback method as described above.

[0028] According to one aspect of the present application, a network device is provided, comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the BWP fallback method as described above.

[0029] According to one aspect of the present application, a computer-readable storage medium is provided, in which an executable program code is stored. The executable program code is loaded and executed by a processor to implement the BWP rollback method as described above.

[0030] According to one aspect of the present application, a chip is provided, the chip including a programmable logic circuit and / or program instructions, and when the chip runs on a terminal or a network device, it is used to implement the BWP fallback method as described above.

[0031] According to one aspect of the present application, an embodiment of the present application provides a computer program product. When the computer program product is executed by a processor of a terminal or a network device, it is used to implement the BWP fallback method of the above aspect.

[0032] The technical solution provided by the embodiments of the present application includes at least the following beneficial effects:

[0033] The method, apparatus, device and storage medium provided in the embodiments of the present application, in response to the expiration of the first timer of the currently monitored BWP, the terminal determines the default BWP according to at least one of the preset rules, the indication information of the network device and the communication protocol, and then switches from the currently monitored BWP to the default BWP, thereby solving the problem that the terminal cannot determine the default BWP based on the downlink BWP to complete the fallback, improving the accuracy of determining the default BWP, and thereby improving the efficiency of the terminal fallback. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A block diagram of a communication system provided by an exemplary embodiment of the present application is shown.

[0036] Figure 2 A flowchart of a BWP fallback method provided by an exemplary embodiment of the present application is shown.

[0037] Figure 3 A flowchart of a BWP fallback method provided by an exemplary embodiment of the present application is shown.

[0038] Figure 4 A block diagram of a BWP rollback device provided by an exemplary embodiment of the present application is shown.

[0039] Figure 5 A block diagram of a BWP rollback device provided by an exemplary embodiment of the present application is shown.

[0040] Figure 6 A schematic diagram of the structure of a communication device provided by an exemplary embodiment of the present application is shown. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0042] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. Unless otherwise indicated, when the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0043] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0044] It should be understood that, although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, for example, the word "if" used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0045] The following is an explanation of the application scenarios of this application:

[0046] Figure 1 A block diagram of a communication system provided by an exemplary embodiment of the present application is shown. The communication system may include: a terminal 10 and a network device 20.

[0047] The number of terminals 10 is usually multiple, and one or more terminals 10 may be distributed in a cell managed by each network device 20. The terminal 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), etc. For the convenience of description, in the embodiments of the present application, the above-mentioned devices are collectively referred to as terminals.

[0048] The network device 20 is a device deployed in the access network to provide wireless communication functions for the terminal 10. The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with network device functions may be different. For example, in the 5G NR system, it is called gNodeB or gNB. With the evolution of communication technology, the name "network device" may change. For the convenience of description, in the embodiment of the present application, the above-mentioned devices that provide wireless communication functions for the terminal 10 are collectively referred to as network devices. A connection can be established between the network device 20 and the terminal 10 through the air interface, so that communication is carried out through the connection, including the interaction of signaling and data. There can be multiple network devices 20, and two adjacent network devices 20 can also communicate with each other by wire or wirelessly. The terminal 10 can switch between different network devices 20, that is, establish connections with different network devices 20.

[0049] The "5G NR system" in the embodiment of the present application may also be referred to as a 5G system or an NR system, but those skilled in the art may understand its meaning. The technical solution described in the embodiment of the present application may be applicable to a 5G NR system or to a subsequent evolution system of the 5G NR system.

[0050] With the development of communication technology, in order to adapt to new communication scenarios, the relevant technology proposes reduced capability terminals, referred to as RedCap terminals, also known as NR-lite. Such terminals generally need to meet the conditions of low cost, low complexity, enhanced coverage to a certain extent, power saving, etc. Compared with RedCap terminals, ordinary terminals are called non-RedCap terminals or legacy terminals (legacy UE), which are different.

[0051] Figure 2 A flowchart of a BWP rollback method provided by an exemplary embodiment of the present application is shown, which can be applied to the following exemplary embodiments: Figure 1 In the first type terminal shown, the method includes at least part of the following contents:

[0052] Step 201: In response to a first timer with a currently monitored BWP expiring, a first type terminal determines a default BWP; wherein the default BWP is a target BWP to which the terminal switches from the currently monitored BWP.

[0053] Among them, BWP is the bandwidth configured by the network device for the first type of terminal. The terminal will monitor BWP to receive downlink transmission (such as PDCCH or physical downlink shared channel PDSCH (Physical Downlink Shared Channel) or BCH (Broadcast Channel)) sent by the network device based on the BWP. Among them, downlink transmission (Downlink Transmission) may include downlink control signaling and / or downlink user data. In addition, the first timer is used for timing. If the first type of terminal monitors that the BWP does not perform downlink transmission for a period of time that exceeds the timing duration of the first timer, the first timer times out. In response to the first timer timing out, the first type of terminal needs to switch the monitored BWP.

[0054] In an embodiment of the present application, after the terminal switches to the BWP, the downlink transmission on the BWP is detected. If the first type of terminal times out with the first timer of the currently monitored BWP, it means that no downlink transmission has been received on the BWP and within the timing duration of the first timer. At this time, it is determined to switch from the currently monitored BWP to the default BWP.

[0055] When the first type terminal determines that the first timer corresponding to the currently monitored BWP has timed out, the first type terminal first determines a target BWP to be switched, which may be a default BWP. Then, the first type terminal switches from the currently monitored BWP to the determined default BWP.

[0056] The default BWP is determined according to at least one of the indication information of the network device, a preset rule, and a communication protocol.

[0057] The preset rule is used for the terminal to determine the default BWP from the BWP pre-configured by the network device and the BWP configured separately for the terminal. The indication information of the network device is used to indicate the default BWP, or to indicate that other BWP is determined as the default BWP.

[0058] In the embodiment of the present disclosure, the first type of terminal may be a RedCap UE.

[0059] In some embodiments, the first timer is BWP-InactivityTimer; or any other appropriate timer.

[0060] It should be noted that in the embodiments of the present disclosure, the first type of terminal refers to a type of terminal, which may refer to a terminal of the first type, or may refer to two or more terminals of the first type. Similarly, the second type of terminal also refers to a type of terminal, which may refer to a terminal of the second type, or may refer to two or more terminals of the second type.

[0061] According to the method provided in the embodiment of the present application, in response to the expiration of the first timer of the currently monitored BWP, the terminal determines the default BWP according to at least one of the preset rules, the indication information of the network device and the communication protocol, and then switches from the currently monitored BWP to the default BWP, thereby solving the problem that the first type of terminal cannot determine the default BWP based on the downlink BWP to complete the fallback, improves the accuracy of determining the default BWP, and thereby improves the efficiency of the terminal fallback.

[0062] Figure 2 The embodiment shown in the figure illustrates how the terminal switches to the default BWP. For the network device, the network device also determines the default BWP to which the terminal needs to switch based on whether the first timer has timed out. For details, see Figure 3 Embodiment shown:

[0063] Step 301: In response to the timer corresponding to the first type of terminal expiring, the network device determines a default BWP for communicating with the first type of terminal, where the default BWP is the target BWP to which the network device switches from the current BWP.

[0064] The default BWP may be determined illustratively based on at least one of a preset rule and a communication protocol.

[0065] Exemplarily, the preset rule may be that the network device determines that a first timer for the first type of terminal to detect that the corresponding BWP has no downlink transmission has timed out. The downlink transmission may include downlink control signaling and / or downlink user data.

[0066] In a possible implementation, the network device may maintain a timer corresponding to the first type of terminal. If the network device does not send a downlink transmission to the first type of terminal within the timing duration of the maintained timer, it means that the timer maintained by the network device has timed out. In response to the timer timeout, the network device determines the default BWP of the corresponding first type of terminal, and then switches from the current BWP to the determined default BWP. In a possible implementation, the timer corresponding to the network device and the first timer corresponding to the first type of terminal are different timers, but the first timer corresponding to the network device and the first timer corresponding to the first type of terminal have corresponding timing durations.

[0067] The method in which the network device determines to switch to the default BWP in the embodiment of the present application is similar to the above Figure 2 The method of the illustrated embodiment is similar and will not be described again here.

[0068] In some embodiments, the timer may be a BWP-InactivityTimer; or any other appropriate timer.

[0069] The method provided in the embodiment of the present application determines a default BWP when the network device determines that the timer corresponding to the first type of terminal has expired, and then switches from the currently monitored BWP to the default BWP. The network device can determine a default BWP for each of the first type of terminals to ensure that they correspond to the first type of terminals, thereby solving the problem of being unable to determine the default BWP based on the downlink BWP to complete the fallback, improving the accuracy of determining the default BWP, and thereby improving the efficiency of terminal fallback.

[0070] exist Figure 2 and Figure 3 Based on the illustrated embodiment, the information included in the preset rule is described. The preset rule includes at least one of the following information:

[0071] (1) Relationship between the first uplink BWP and the bandwidth supported by the first type of terminals.

[0072] The first uplink BWP is a bandwidth portion configured by the network device for the first type of terminal. The first type of terminal supported bandwidth is the maximum bandwidth supported by the first type of terminal.

[0073] The relationship between the first uplink BWP and the first type of terminal supported bandwidth includes: the first uplink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, or the first uplink BWP is equal to the first type of terminal bandwidth.

[0074] (2) Relationship between the first downlink BWP and the bandwidth supported by the first type of terminals.

[0075] The first downlink BWP is a bandwidth portion configured by the network device for the first type of terminal. The first type of terminal supported bandwidth is the maximum bandwidth supported by the first type of terminal.

[0076] The relationship between the first downlink BWP and the first type of terminal supported bandwidth includes: the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first downlink BWP is larger than the first type of terminal supported bandwidth, or the first downlink BWP is equal to the first type of terminal bandwidth.

[0077] (3) The role of the second downstream BWP.

[0078] The second downlink BWP may be used for at least one of the following functions: random access, paging, or connected state.

[0079] In addition, the first downlink BWP supports the use of the first type of terminal and the second type of terminal, and the second downlink BWP supports the use of the first type of terminal, which also means that the second downlink BWP only supports the use of the first type of terminal, but does not support the use of the second type of terminal. The first type of terminal and the second type of terminal are two different types of terminals, and the capability of the first type of terminal is less than that of the second type of terminal.

[0080] In some possible implementations, the first type of terminal may be referred to as a Reduced Capability (capability reduction) terminal, or NR-lite for short. The second type of terminal may be a common terminal (Legacy UE).

[0081] In some embodiments, the first type of terminal is suitable for Internet of Things services. Due to the widespread development of services such as video surveillance, smart home, wearable devices and industrial sensors, transmission rates of tens to hundreds of megabits are required. In order to adapt to the Internet of Things services, a first type of terminal is proposed.

[0082] The first type of terminal provided in the embodiment of the present application has a simple structure and low design complexity, which not only meets the requirements of covering Internet of Things devices, but also reduces the design requirements of the terminal and expands the adaptability of the terminal.

[0083] It should be noted that the above-mentioned embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments. This application does not limit the combination between the embodiments.

[0084] exist Figure 2 or Figure 3 In the illustrated embodiment, the default BWP includes the following cases:

[0085] The first type: The default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0086] Wherein, the network device configures the default BWP for the terminal through the terminal-specific signaling, and the terminal can determine the default BWP configured by the network device as the default BWP that needs to be switched. In all embodiments of the present disclosure, "terminal-specific signaling" is a signaling sent to the first type of terminal; "terminal-specific signaling" can be a signaling dedicated to the first type of terminal, or it can be a field domain, IE (Information Element), or one or more bits (bits) in an existing signaling that is dedicated to configuring a RedCap terminal.

[0087] The second type: when the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the first downlink BWP configured by the SIB (System Info Block).

[0088] In an embodiment of the present application, there is also a situation where the network device does not configure the default BWP through terminal-specific signaling, and at this time the first type of terminal also includes a first downlink BWP configured by SIB, then the first type of terminal can determine the first downlink BWP configured by SIB as the default BWP.

[0089] The third type: when the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the first downlink BWP configured by the MIB (Master Indication Block).

[0090] In an embodiment of the present application, there is also a situation where the network device does not configure the default BWP through terminal-specific signaling, and at this time the first type terminal also includes the first downlink BWP configured by MIB, then the first type terminal can determine the first downlink BWP configured by MIB as the default BWP.

[0091] The fourth type: when the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the second downlink BWP.

[0092] In the embodiment of the present application, the first type of terminal is configured with a second downlink BWP, and the second downlink BWP is applicable to the first type of terminal. If the network device does not configure the default BWP through terminal-specific signaling, the first type of terminal can determine the second downlink BWP as the default BWP. In a possible implementation, the second downlink BWP is a BWP specifically used by the first type of terminal; the second type of terminal cannot use the second downlink BWP.

[0093] Fifth type: When the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the public BWP configured by the network device.

[0094] In an embodiment of the present application, the network device can configure a public BWP for the first type of terminal, that is, all first type of terminals can use the public BWP, and no default BWP will be configured for the first type of terminal. When the terminal needs to switch to the default BWP, the public BWP configured by the network device is determined as the default BWP.

[0095] The sixth type: the default BWP is the BWP indicated by the configuration information of the network device, and the BWP is any one of the second downlink BWP, the first downlink BWP configured by the SIB, or the first downlink BWP configured by the MIB.

[0096] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the BWP indicated by the configuration information of the network device is determined as the default BWP.

[0097] The method provided in the embodiment of the present application, when the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, can indicate through the indication information of the network device that any one of the second downlink BWP, the first downlink BWP configured by the SIB, or the first downlink BWP configured by the MIB is determined as the default BWP, thereby improving the accuracy of determining the default BWP and further improving the efficiency of terminal fallback.

[0098] It should be noted that the above-mentioned embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments. This application does not limit the combination between the embodiments.

[0099] On the premise that the default BWP includes the above six situations, the conditions for each situation are described; of course, these situations are not exhaustive, and those skilled in the art can make adaptive adjustments according to the technical solutions disclosed in the present invention:

[0100] The first situation of the above embodiment is described below:

[0101] (1) When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used for at least random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0102] Among them, the network device configures the default BWP through terminal-specific signaling. At this time, the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging. In this case, the default BWP configured by the network device can be determined as the default BWP that the first type of terminal needs to switch.

[0103] (2) When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is used for at least random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0104] Among them, the network device configures the default BWP through terminal-specific signaling. At this time, the first downlink BWP configured by SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging. In this case, the default BWP configured by the network device can be determined as the default BWP that the first type of terminal needs to switch.

[0105] (3) When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used for at least random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0106] Among them, the network device configures the default BWP through terminal-specific signaling. At this time, the first downlink BWP configured by SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging. In this case, the default BWP configured by the network device can be determined as the default BWP that the first type of terminal needs to switch.

[0107] It should be noted that the above-mentioned embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments. This application does not limit the combination between the embodiments.

[0108] According to the method provided in the embodiment of the present application, the network device configures a default BWP for the first type of terminal. When the terminal determines that the first uplink BWP, the first downlink BWP and the bandwidth supported by the first type of terminal meet the conditions, and the second downlink BWP is also used for random access or paging, the default BWP configured by the network device can be determined as the default BWP that the first type of terminal needs to switch to, thereby improving the accuracy of determining the default BWP and thereby improving the efficiency of terminal fallback.

[0109] As mentioned above, the default BWP includes the above six situations. The conditions for each situation are explained below:

[0110] The second and third situations of the above embodiment are described below:

[0111] (1) When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is used for at least random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0112] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB is determined as the default BWP.

[0113] (2) When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0114] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB is determined as the default BWP.

[0115] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the frequency division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0116] In other embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the time division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB, and the uplink BWP corresponding to the first downlink BWP is configured.

[0117] In the embodiment of the present application, according to the frequency division duplex mode or the time division duplex mode, it is considered whether the first type of terminal is configured with an uplink BWP corresponding to the first downlink BWP. While ensuring that the default BWP is determined, the uplink BWP can also be configured to ensure uplink transmission, thereby improving the accuracy of transmission.

[0118] (3) When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0119] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for the connected state, the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB is determined as the default BWP.

[0120] According to the method provided in the embodiment of the present application, if the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, then when the terminal determines that the first uplink BWP, the first downlink BWP and the first type of terminal support bandwidth meet the conditions, and the second downlink BWP is at least used for random access or paging or connected state, the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB can be determined as the default BWP, thereby improving the accuracy of determining the default BWP and thereby improving the efficiency of terminal fallback.

[0121] It should be noted that the above-mentioned embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments. This application does not limit the combination between the embodiments.

[0122] As mentioned above, the default BWP includes the above six situations. The conditions for each situation are explained below:

[0123] The third situation of the above embodiment is described below:

[0124] (1) When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is used for at least random access or paging, the default BWP is the first downlink BWP configured by the MIB.

[0125] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB is determined as the default BWP.

[0126] (2) When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used for at least random access or paging, the default BWP is the first downlink BWP configured by the MIB.

[0127] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB is determined as the default BWP.

[0128] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used for at least random access or paging, for the frequency division duplex mode, the default BWP is the first downlink BWP configured by the MIB;

[0129] In other embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the time division duplex mode, the default BWP is the first downlink BWP configured by the MIB, and the uplink BWP corresponding to the first downlink BWP is configured.

[0130] In the embodiment of the present application, according to the frequency division duplex mode or the time division duplex mode, it is considered whether the first type of terminal is configured with an uplink BWP corresponding to the first downlink BWP. While ensuring that the default BWP is determined, the uplink BWP can also be configured to ensure uplink transmission, thereby improving the accuracy of transmission.

[0131] In addition, in the method provided in the embodiment of the present application, if the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, then when the terminal determines that the first uplink BWP, the first downlink BWP and the first type of terminal support bandwidth meet the conditions, and the second downlink BWP is also used for random access or paging, the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB can be determined as the default BWP, thereby improving the accuracy of determining the default BWP and thereby improving the efficiency of terminal fallback.

[0132] It should be noted that the above-mentioned embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments. This application does not limit the combination between the embodiments.

[0133] As mentioned above, the default BWP includes the above six situations. The conditions for each situation are explained below:

[0134] The fourth situation of the above embodiment is described below:

[0135] (1) When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0136] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the second downlink BWP is determined as the default BWP.

[0137] (2) When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0138] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the second downlink BWP is determined as the default BWP.

[0139] (3) When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0140] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the second downlink BWP is determined as the default BWP.

[0141] (4) When the downlink BWP configured by the SIB is greater than the bandwidth supported by the terminal, the uplink BWP is greater than the bandwidth supported by the terminal, and the second downlink BWP is used at least in the connected state, the default BWP is the second downlink BWP.

[0142] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, and when it is determined that the downlink BWP configured by the SIB is greater than the terminal supported bandwidth, the uplink BWP is greater than the terminal supported bandwidth, and the second downlink BWP is at least used for the connected state, the second downlink BWP is determined as the default BWP.

[0143] According to the method provided in the embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling. Then, when the terminal determines that the first uplink BWP, the first downlink BWP and the first type of terminal support bandwidth meet the conditions, and the second downlink BWP is also used in the connected state, the second downlink BWP can be determined as the default BWP, thereby improving the accuracy of determining the default BWP and further improving the efficiency of terminal fallback.

[0144] It should be noted that the above-mentioned embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments. This application does not limit the combination between the embodiments.

[0145] On the premise that the default BWP includes the above five situations, the conditions for each situation are explained below:

[0146] The sixth situation of the above embodiment is described below:

[0147] (1) When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used for at least random access or paging, the default BWP is the public BWP configured by the network device.

[0148] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, but the network device can configure a common BWP for the first type of terminal. When it is determined that the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the common BWP is determined as the default BWP.

[0149] (2) When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

[0150] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, but the network device can configure a common BWP for the first type of terminal. When it is determined that the first downlink BWP is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the common BWP is determined as the default BWP.

[0151] (3) When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

[0152] In an embodiment of the present application, the network device does not configure a default BWP for the first type of terminal through terminal-specific signaling, but the network device can configure a common BWP for the first type of terminal. When it is determined that the first downlink BWP is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the common BWP is determined as the default BWP.

[0153] According to the method provided in the embodiment of the present application, when the network device does not configure a default BWP for a first type of terminal through terminal-specific signaling, but the network device configures a common BWP for the first type of terminal, when the terminal determines that the first uplink BWP, the first downlink BWP and the bandwidth supported by the first type of terminal meet the conditions, and the second downlink BWP is also used for random access or paging, the common BWP can be determined as the default BWP, thereby improving the accuracy of determining the default BWP and thereby improving the efficiency of terminal fallback.

[0154] It should be noted that the above-mentioned embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments. This application does not limit the combination between the embodiments.

[0155] Figure 4 A block diagram of a BWP rollback device provided by an exemplary embodiment of the present application is shown. Figure 4 , the device comprises:

[0156] The determination module 401 is configured to determine, in response to a first timer with a currently monitored BWP expiring, a default BWP by the first type terminal; wherein the default BWP is a target BWP to which the terminal switches from the currently monitored BWP.

[0157] In the embodiments of the present disclosure, Figure 4 The device shown is applied to a first type of terminal. In some possible embodiments, the first type of terminal may be a RedCap UE.

[0158] The default BWP is determined according to at least one of the indication information, the preset rules, and the communication protocol.

[0159] In some embodiments, the preset rule includes at least one of the following information:

[0160] The relationship between the first uplink BWP and the bandwidth supported by the first type of terminal, the relationship between the first downlink BWP and the bandwidth supported by the first type of terminal, and the role of the second downlink BWP;

[0161] The first downlink BWP supports the use of the first type of terminal and the second type of terminal, the second downlink BWP supports the use of the first type of terminal, and the capability of the first type of terminal is less than that of the second type of terminal.

[0162] In some embodiments, the default BWP is a default BWP configured by the network device through terminal-specific signaling.

[0163] In some embodiments, when the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the first downlink BWP configured by the system information block SIB;

[0164] In some embodiments, when the network device does not configure a default BWP through terminal-specific signaling, the default BWP is the first downlink BWP configured by the master information block MIB.

[0165] In some embodiments, when the network device does not configure a default BWP through terminal-specific signaling, the default BWP is the second downlink BWP.

[0166] In some embodiments, when the network device does not configure a default BWP through terminal-specific signaling, the default BWP is a public BWP configured by the network device.

[0167] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0168] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0169] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0170] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0171] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0172] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0173] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the frequency division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0174] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the time division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB, and the uplink BWP corresponding to the first downlink BWP is configured.

[0175] In some embodiments, when the first downlink BWP configured by SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by MIB.

[0176] In some embodiments, when the first downlink BWP configured by SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by MIB.

[0177] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the frequency division duplex mode, the default BWP is the first downlink BWP configured by the MIB.

[0178] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for time division duplex mode, the default BWP is the first downlink BWP configured by the MIB, and an uplink BWP corresponding to the first downlink BWP is configured.

[0179] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0180] In some embodiments, when the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0181] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0182] In some embodiments, when the downlink BWP configured by the SIB is greater than the bandwidth supported by the terminal, the uplink BWP is greater than the bandwidth supported by the terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0183] In some embodiments, the default BWP is a BWP indicated by configuration information of the network device, and the BWP is any one of a second downlink BWP, a first downlink BWP configured by an SIB, or a first downlink BWP configured by an MIB.

[0184] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

[0185] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

[0186] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

[0187] In some embodiments, the first timer is a BWP-InactivityTimer; or any other appropriate timer.

[0188] It should be noted that the device provided in the above embodiment, when implementing its functions, is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0189] Figure 5 A block diagram of a BWP rollback device provided by an exemplary embodiment of the present application is shown. Figure 5 , the device comprises:

[0190] The determination module 501 is configured to determine, in response to a timer corresponding to a first type of terminal expiring, a default BWP of the first type of terminal by the network device, where the default BWP is a target BWP to which the network device switches from a currently monitored BWP.

[0191] In the embodiments of the present disclosure, Figure 5 The device shown is applied to a network device.

[0192] The default BWP is determined according to at least one of a preset rule and a communication protocol.

[0193] In some embodiments, the preset rule includes at least one of the following information:

[0194] The relationship between the first uplink BWP and the bandwidth supported by the first type of terminal, the relationship between the first downlink BWP and the bandwidth supported by the first type of terminal, and the role of the second downlink BWP;

[0195] The first downlink BWP supports the use of the first type of terminal and the second type of terminal, the second downlink BWP supports the use of the first type of terminal, and the capability of the first type of terminal is less than that of the second type of terminal.

[0196] In some embodiments, the default BWP is a default BWP configured by the network device through terminal-specific signaling.

[0197] In some embodiments, when the network device does not configure a default BWP through terminal-specific signaling, the default BWP is the first downlink BWP configured by the SIB.

[0198] In some embodiments, when the network device does not configure a default BWP through terminal-specific signaling, the default BWP is the first downlink BWP configured by the MIB.

[0199] In some embodiments, when the network device does not configure a default BWP through terminal-specific signaling, the default BWP is the second downlink BWP.

[0200] In some embodiments, when the network device does not configure a default BWP through terminal-specific signaling, the default BWP is a public BWP configured by the network device.

[0201] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0202] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0203] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through terminal-specific signaling.

[0204] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0205] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0206] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0207] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the frequency division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

[0208] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the time division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB, and the uplink BWP corresponding to the first downlink BWP is configured.

[0209] In some embodiments, when the first downlink BWP configured by SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by MIB.

[0210] In some embodiments, when the first downlink BWP configured by SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by MIB.

[0211] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for the frequency division duplex mode, the default BWP is the first downlink BWP configured by the MIB.

[0212] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for time division duplex mode, the default BWP is the first downlink BWP configured by the MIB, and an uplink BWP corresponding to the first downlink BWP is configured.

[0213] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0214] In some embodiments, when the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0215] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0216] In some embodiments, when the downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

[0217] In some embodiments, the default BWP is a BWP indicated by configuration information of the network device, and the BWP is any one of a second downlink BWP, a first downlink BWP configured by an SIB, or a first downlink BWP configured by an MIB.

[0218] In some embodiments, when the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

[0219] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is less than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

[0220] In some embodiments, when the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

[0221] In some embodiments, the timer may be a BWP-InactivityTimer; or any other appropriate timer.

[0222] It should be noted that the device provided in the above embodiment, when implementing its functions, is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0223] Figure 6 A schematic diagram of the structure of a communication device provided by an exemplary embodiment of the present application is shown. The communication device includes: a processor 601, a receiver 602, a transmitter 603, a memory 604 and a bus 605.

[0224] The processor 601 includes one or more processing cores. The processor 601 executes various functional applications and information processing by running software programs and modules.

[0225] The receiver 602 and the transmitter 603 may be implemented as a communication component, which may be a communication chip.

[0226] The memory 604 is connected to the processor 601 via a bus 605 .

[0227] The memory 604 may be used to store at least one program code, and the processor 601 may be used to execute the at least one program code to implement each step in the above method embodiment.

[0228] In addition, the communication device may be a terminal or a network device. The memory 604 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: a magnetic disk or optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

[0229] In an exemplary embodiment, a computer-readable storage medium is further provided, wherein an executable program code is stored in the computer-readable storage medium, and the executable program code is loaded and executed by a processor to implement the BWP fallback method performed by a communication device provided by each of the above method embodiments.

[0230] In an exemplary embodiment, a chip is provided, the chip including a programmable logic circuit and / or program instructions, and when the chip runs on a terminal or a network device, it is used to implement the BWP fallback method provided in each method embodiment.

[0231] In an exemplary embodiment, a computer program product is provided. When the computer program product is executed by a processor of a terminal or a network device, it is used to implement the BWP fallback method provided by each of the above method embodiments.

[0232] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0233] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A BWP fallback method, It is characterized in that The method is performed by a first type terminal, and the method includes: In response to a first timer with a currently monitored BWP expiring, the first type of terminal determining a default BWP; The default BWP is the target BWP to which the first type of terminal switches from the currently monitored BWP; The default BWP is a second downlink BWP that supports the first type of terminal and does not support the second type of terminal, and the capability of the first type of terminal is less than the capability of the second type of terminal; The second downlink BWP is used for at least one of the following functions: random access and paging; The default BWP is configured by the system information block SIB.

2. The method according to claim 1, It is characterized in that The default BWP is determined based on at least one of the following information: The relationship between the first uplink BWP and the bandwidth supported by the first type of terminal, the relationship between the first downlink BWP and the bandwidth supported by the first type of terminal, and the role of the second downlink BWP; The first downlink BWP supports the use of the first type of terminals and the second type of terminals.

3. The method according to claim 1 or 2, It is characterized in that The default BWP is the default BWP configured by the network device through terminal-specific signaling.

4. The method according to claim 1 or 2, It is characterized in that In the case where the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the first downlink BWP configured by the SIB; or, In the case where the network device does not configure the default BWP through the terminal-specific signaling, the default BWP is the first downlink BWP configured by the master information block MIB.

5. The method according to claim 1 or 2, It is characterized in that When the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the second downlink BWP.

6. The method according to claim 1 or 2, It is characterized in that In the case where the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the public BWP configured by the network device.

7. The method according to claim 1 or 2, It is characterized in that The default BWP is a BWP indicated by configuration information of the network device, and the BWP is any one of the second downlink BWP, the first downlink BWP configured by the SIB, or the first downlink BWP configured by the master information block MIB.

8. The method according to claim 3, It is characterized in that When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through the terminal-specific signaling; or, When the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is less than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through the terminal-specific signaling; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through the terminal-specific signaling.

9. The method according to claim 4, It is characterized in that When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is smaller than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB; or, When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB; or, When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

10. The method according to claim 9, It is characterized in that When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, and the second downlink BWP is used for at least random access or paging, for frequency division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB; or, When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for time division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB, and the first type of terminal is configured with an uplink BWP corresponding to the first downlink BWP.

11. The method according to claim 4, It is characterized in that When the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is less than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by the MIB; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by the MIB.

12. The method according to claim 11, It is characterized in that When the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is greater than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, for frequency division duplex mode, the default BWP is the first downlink BWP configured by the MIB; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for time division duplex mode, the default BWP is the first downlink BWP configured by the MIB, and the first type of terminal is configured with an uplink BWP corresponding to the first downlink BWP.

13. The method according to claim 5, It is characterized in that When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is smaller than the first type of terminal supported bandwidth, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP; or, When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP; or, When the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is less than the first type of terminal supported bandwidth, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

14. The method according to claim 6, It is characterized in that When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device; or, In the case where the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is less than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

15. A BWP fallback method, It is characterized in that The method is performed by a network device, and the method includes: In response to a timer corresponding to a first type of terminal expiring, the network device determines a default BWP for communicating with the first type of terminal, the default BWP being a target BWP to which the network device switches from a current BWP; The default BWP is a second downlink BWP used by the first type of terminal and not supported by the second type of terminal, and the capability of the first type of terminal is less than the capability of the second type of terminal; The second downlink BWP is used for at least one of the following functions: random access and paging; The default BWP is configured by the system information block SIB.

16. The method according to claim 15, It is characterized in that The default BWP is determined based on at least one of the following information: The relationship between the first uplink BWP and the bandwidth supported by the first type of terminal, the relationship between the first downlink BWP and the bandwidth supported by the first type of terminal, and the role of the second downlink BWP; The first downlink BWP supports the use of the first type of terminals and the second type of terminals.

17. The method according to claim 15 or 16, It is characterized in that The default BWP is the default BWP configured by the network device through terminal-specific signaling.

18. The method according to claim 15 or 16, It is characterized in that In the case where the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the first downlink BWP configured by the SIB; or, In the case where the network device does not configure the default BWP through the terminal-specific signaling, the default BWP is the first downlink BWP configured by the master information block MIB.

19. The method according to claim 15 or 16, It is characterized in that In a case where the network device does not configure the default BWP through terminal-specific signaling, the default BWP is the second downlink BWP.

20. The method according to claim 15 or 16, It is characterized in that In the case where the network device does not configure the default BWP through terminal-specific signaling, the default BWP is a public BWP configured by the network device.

21. The method according to claim 15 or 16, It is characterized in that The default BWP is a BWP indicated by configuration information of the network device, and the BWP is any one of the second downlink BWP, the first downlink BWP configured by the SIB, or the first downlink BWP configured by the master information block MIB.

22. The method according to claim 17, It is characterized in that When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through the terminal-specific signaling; or, When the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is less than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through the terminal-specific signaling; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the default BWP configured by the network device through the terminal-specific signaling.

23. The method according to claim 18, It is characterized in that When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is smaller than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB; or, When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB; or, When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is smaller than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB.

24. The method according to claim 23, It is characterized in that When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, and the second downlink BWP is used for at least random access or paging, for frequency division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB; or, When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for time division duplex mode, the default BWP is the first downlink BWP configured by the SIB or the first downlink BWP configured by the MIB, and an uplink BWP corresponding to the first downlink BWP is configured.

25. The method according to claim 18, It is characterized in that When the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is less than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by the MIB; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the first downlink BWP configured by the MIB.

26. The method according to claim 25, It is characterized in that When the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is greater than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, for frequency division duplex mode, the default BWP is the first downlink BWP configured by the MIB; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is used at least for random access or paging, for time division duplex mode, the default BWP is the first downlink BWP configured by the MIB, and an uplink BWP corresponding to the first downlink BWP is configured.

27. The method according to claim 19, It is characterized in that When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is smaller than the first type of terminal supported bandwidth, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP; or, When the first downlink BWP is smaller than the first type of terminal supported bandwidth, the first uplink BWP is larger than the first type of terminal supported bandwidth, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP; or, When the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is less than the first type of terminal supported bandwidth, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used in the connected state, the default BWP is the second downlink BWP.

28. The method according to claim 20, It is characterized in that When the first downlink BWP is smaller than the bandwidth supported by the first type of terminal, the first uplink BWP is larger than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device; or, In the case where the first downlink BWP configured by the SIB is greater than the first type of terminal supported bandwidth, the first uplink BWP is less than the first type of terminal supported bandwidth, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device; or, When the first downlink BWP configured by the SIB is greater than the bandwidth supported by the first type of terminal, the first uplink BWP is greater than the bandwidth supported by the first type of terminal, and the second downlink BWP is at least used for random access or paging, the default BWP is the public BWP configured by the network device.

29. A BWP retraction device, It is characterized in that The device comprises: a determination module configured to determine a default BWP in response to a first timer timing out with a currently monitored BWP; Wherein, the default BWP is the target BWP to which the device switches from the currently monitored BWP; The default BWP is a second downlink BWP that supports the use of the device but does not support the use of the second type of terminal, and the capability of the device is less than the capability of the second type of terminal; The second downlink BWP is used for at least one of the following functions: random access and paging; The default BWP is configured by the system information block SIB.

30. A BWP retraction device, It is characterized in that The device comprises: a determination module configured to determine, in response to a timer corresponding to a first type of terminal expiring, a default BWP for communicating with the first type of terminal, the default BWP being a target BWP to which the apparatus switches from a current BWP; The default BWP is a second downlink BWP that supports the first type of terminal and does not support the second type of terminal, and the capability of the first type of terminal is less than the capability of the second type of terminal; The second downlink BWP is used for at least one of the following functions: random access and paging; The default BWP is configured by the system information block SIB.

31. A terminal, It is characterized in that The terminal comprises: processor; a transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the BWP rollback method as described in any one of claims 1 to 14.

32. A network device, It is characterized in that The network equipment includes: processor; a transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the BWP rollback method as described in any one of claims 15 to 28.

33. A computer readable storage medium, It is characterized in that The readable storage medium stores executable program code, and the executable program code is loaded and executed by a processor to implement the BWP rollback method as described in any one of claims 1 to 28.

34. A computer program product, It is characterized in that When the computer program product is executed by a processor of a terminal or a network device, it is used to implement the BWP fallback method according to any one of claims 1 to 28.

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