A method and apparatus for partial bandwidth switching

Abstract

The present invention provides a method and device for switching partial bandwidth, relating to the field of communication technology. The method comprises the following steps: judging whether user equipment has partial bandwidth switching behavior based on downlink control information; if so, determining the user equipment as a target user equipment, determining the partial bandwidth as a target partial bandwidth, and determining the switching moment as a target moment; stopping uplink and downlink scheduling of the target equipment; after a preset time delay at the target moment, the target equipment performs uplink pre-scheduling on the target partial bandwidth for a first preset number of times; judging whether first verification information corresponding to the uplink pre-scheduling on the target partial bandwidth is correct; if the first verification information is correct, the target equipment stops uplink pre-scheduling on the target partial bandwidth, and starts uplink and downlink scheduling on the target partial bandwidth. The present invention improves user equipment service perception, reduces air interface resource waste, and improves spectrum utilization.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method and device for switching a portion of bandwidth. Background Art

[0002] 5G New Radio (NR) is a global 5G standard based on an entirely new air interface design using Orthogonal Frequency Division Multiplexing (OFDM). The 5G NR system introduces the concept of Bandwidth Parts (BWPs). For a terminal, a frequency band is divided into several BWPs. While a terminal may be configured with multiple BWPs within a time period, only one BWP can be active at any given time. The terminal monitors only the Downlink Control Information (DCI) signaling on the active BWP.

[0003] After the terminal obtains the activated BWP configured by the base station, it can monitor the DCI sent by the base station on the activated BWP. Then, the terminal can receive the downlink data sent by the base station on the physical downlink shared channel (PDSCH) according to the received DCI, or send uplink data to the base station through the physical uplink shared channel (PUSCH) according to the received DCI. In addition, the relevant standards organization has also proposed NR unlicensed technology for communicating using NR technology on unlicensed spectrum. Because before using the unlicensed spectrum, channel detection must be performed through the Listen Before Talk (LBT) mechanism. If the detection result shows that the channel is idle, the unlicensed spectrum can be accessed.

[0004] Currently, when the NR network side switches the BWP based on DCI, it does not determine whether the user equipment (UE) detects the BWP switching DCI.

[0005] When the base station uses the above method, if the UE misses or misdetects the DCI, the base station will switch to the target BWP while the UE is still in the source BWP. The activated BWPs of the base station and the UE are inconsistent, resulting in scheduling anomalies between the base station and the UE. The base station transmits uplink and downlink signals within the target BWP, while the UE sends uplink signals and waits for downlink transmission within the source BWP. The base station and UE cannot communicate on the corresponding frequency domain resources, resulting in uplink and downlink signal transmission errors, affecting the UE's service perception and quality of service (QoS), wasting air interface physical resources, and reducing spectrum utilization. The UE can only resynchronize with the base station through random access. At the same time, if the base station cannot correctly determine whether the UE's BWP is consistent with the base station, it will not be able to release the UE's air interface physical resources in a timely manner, resulting in physical resource waste. Summary of the Invention

[0006] The present invention provides a method and device for switching partial bandwidth, which is used to solve the defects in the prior art such as inconsistency in the activated partial bandwidths of the base station and the user equipment, resulting in abnormal uplink and downlink signal transmission between the base station and the user equipment, thereby improving the user equipment's service perception, reducing the waste of air interface resources, and improving spectrum utilization.

[0007] The present invention provides a method for switching a portion of bandwidth, comprising the following steps:

[0008] Determine whether the user equipment has partial bandwidth switching behavior based on the downlink control information, and if so, determine the user equipment as a target user equipment, determine the partial bandwidth as a target partial bandwidth, and determine the switching time as a target time;

[0009] Stop uplink and downlink scheduling of the target device;

[0010] After a preset time delay at the target time, the target device performs uplink pre-scheduling on the target portion of bandwidth for a first preset number of consecutive times;

[0011] Determine whether first verification information corresponding to the uplink pre-scheduling in the target portion of the bandwidth is correct; wherein the first verification information is any cyclic redundancy check code in the physical uplink shared channel;

[0012] If the first verification information is correct, the target device stops uplink pre-scheduling on the target portion of the bandwidth, and starts uplink and downlink scheduling on the target portion of the bandwidth.

[0013] According to a method for switching a portion of bandwidth provided by the present invention, the method further comprises the following steps:

[0014] If the first verification information is incorrect, the target device stops uplink pre-scheduling on the target partial bandwidth and performs uplink pre-scheduling on the source partial bandwidth for a second preset number of consecutive times;

[0015] Determine whether the second verification information corresponding to the uplink pre-scheduling in the source portion of the bandwidth is correct; wherein the second verification information is any cyclic redundancy check code in the physical uplink shared channel;

[0016] If the second verification information is correct, partial bandwidth switching based on the downlink control information is performed again.

[0017] According to a method for switching a portion of bandwidth provided by the present invention, the method further comprises the following steps:

[0018] If the second verification information is incorrect, the target device is released.

[0019] According to a method for switching partial bandwidth provided by the present invention, in the step of determining whether a user equipment has partial bandwidth switching behavior based on downlink control information, the determination is made by determining whether the BWP-ID indicated by the downlink control information is consistent with the BWP-ID activated by the user equipment. If they are inconsistent, it is considered that the user equipment has partial bandwidth switching behavior based on the downlink control information; if they are consistent, it is considered that the downlink control information is used for non-partial bandwidth switching.

[0020] According to a method for switching a portion of bandwidth provided by the present invention, the method further comprises the following steps:

[0021] If the user equipment does not have any partial bandwidth switching behavior based on the downlink control information, the method is stopped.

[0022] According to a method for switching partial bandwidth provided by the present invention, the preset time depends on the UE capability, and if the partial bandwidth switching involves a change in the subcarrier spacing, the preset time for the partial bandwidth switching is determined by the larger value between the subcarrier spacing before the partial bandwidth switching and the subcarrier spacing after the partial bandwidth switching.

[0023] According to a method for switching partial bandwidth provided by the present invention, uplink and downlink scheduling includes new transmission and retransmission, physical downlink control channel, physical uplink control channel, physical downlink shared channel, physical uplink shared channel, channel sounding reference signal and channel state information reference signal.

[0024] The present invention provides a device for switching a portion of bandwidth, comprising:

[0025] a marking module, configured to determine whether a user equipment has a partial bandwidth switching behavior based on downlink control information, and if so, determine the user equipment as a target user equipment, determine the partial bandwidth as a target partial bandwidth, and determine the switching time as a target time;

[0026] A stop module, used to stop uplink and downlink scheduling of the target device;

[0027] An uplink pre-scheduling module, configured to, after a target time is delayed by a preset time, cause the target device to perform uplink pre-scheduling on the target portion of bandwidth for a first preset number of consecutive times;

[0028] A verification module, configured to determine whether first verification information corresponding to the uplink pre-scheduling in the target portion of the bandwidth is correct; wherein the first verification information is any cyclic redundancy check code in the physical uplink shared channel;

[0029] The switching protection module is configured to, if the first verification information is correct, cause the target device to stop uplink pre-scheduling on the target portion of bandwidth and start uplink and downlink scheduling on the target portion of bandwidth.

[0030] The present invention also provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the above-mentioned methods for switching partial bandwidth are implemented.

[0031] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the above-mentioned methods for switching partial bandwidth.

[0032] The method and device for switching partial bandwidth provided by the present invention, when it is determined that the UE has a DCI-based BWP switching behavior, after a preset time delay, the base station quickly detects the UE's activated BWP-ID through uplink pre-scheduling, stops uplink and downlink signal transmission during the detection process, reduces transmission errors, improves UE service perception, reduces air interface resource waste, and improves spectrum utilization; and decides whether to schedule normally on the target BWP, or fall back to the source BWP and re-switch, or release the UE based on the corresponding detection results, to avoid the UE instance being hung on the base station side and wasting air interface physical resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is one of the flow charts of the method for switching a portion of the bandwidth provided by the present invention;

[0035] Figure 2 This is a second flow chart of the method for switching a portion of the bandwidth provided by the present invention;

[0036] Figure 3 This is a third flow chart of the method for switching a portion of the bandwidth provided by the present invention;

[0037] Figure 4 This is a fourth flow chart of the method for switching a portion of the bandwidth provided by the present invention;

[0038] Figure 5 This is a logical diagram of a method for switching a portion of bandwidth provided by the present invention;

[0039] Figure 6 This is one of the structural diagrams of the device for switching partial bandwidth provided by the present invention;

[0040] Figure 7 This is the second structural diagram of the device for switching partial bandwidth provided by the present invention;

[0041] Figure 8 This is the third structural diagram of the device for switching partial bandwidth provided by the present invention;

[0042] Figure 9 This is the fourth structural diagram of the device for switching partial bandwidth provided by the present invention;

[0043] Figure 10 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] The following combination Figure 1 and Figure 5 The method for switching a portion of bandwidth of the present invention is described, and the method comprises the following steps:

[0046] S100: Determine whether the UE has a DCI-based BWP switching behavior. If so, determine the UE as a target UE, determine the BWP as a target BWP, determine the switching time as the target time, and perform DCI-based BWP switching detection and protection for the UE.

[0047] In this embodiment, in step S100, the BWP switching behavior based on DCI is judged by whether the BWP-ID indicated by the bit "Bandwidth part indicator" in the DCI is consistent with the BWP-ID activated by the current UE. If they are inconsistent, it is considered that the UE has a BWP switching behavior based on DCI. If they are consistent, it is considered that the DCI is used for non-BWP switching.

[0048] S200. Stop uplink and downlink scheduling of the target device. It can be understood that in order to stop all uplink and downlink signal transmissions of the target device, in this embodiment, it includes but is not limited to new transmissions and retransmissions, control channels, namely physical downlink control channels (Physical Downlink Control Channel, PDCCH) and physical uplink control channels (Physical Uplink Control Channel, PUCCH), traffic channels, namely PDSCH and PUSCH, channel sounding reference signals (Sounding Reference Signal, SRS) and channel state information reference signals (Channel State Information-Reference Signal, CSI-RS).

[0049] S300: After a preset time delay at the target time, the target device performs uplink pre-scheduling on the target BWP for a first preset number of consecutive times.

[0050] Preferably, the first preset number of times can be set to 5 times, and the specific value of the first preset number of times can be adjusted according to actual conditions.

[0051] The preset time can be considered as a delay time. In the method for switching the partial bandwidth of the present invention, a BWP switching delay timer is introduced. The preset time is recorded as T BWPswitchDelay , the target time is recorded as n, then at n+T BWPswitchDelay After the time, step S300 is executed.

[0052] The preset time depends on the UE capability. If the BWP switching involves a change in the subcarrier spacing (SCS), the preset time for the BWP switching is determined by the larger value between the SCS before the BWP switching and the SCS after the BWP switching. Preferably, the value of the preset time can be determined by referring to TS38.133 Table 8.6.2-1.

[0053] S400: Determine whether first verification information corresponding to the uplink pre-scheduling of the target BWP is correct, wherein the first verification information is any cyclic redundancy check (CRC) code in the physical uplink shared channel.

[0054] Step S400 determines whether, after performing uplink pre-scheduling for a consecutive preset number of times, the base station detects that any CRC result in the PUSCH corresponding to the first preset number of uplink pre-scheduling times is correct.

[0055] S500: If the first verification information is correct, the target device stops uplink pre-scheduling on the target BWP, and starts uplink and downlink scheduling on the target BWP.

[0056] If the base station detects that any CRC result in the PUSCH corresponding to the first preset number of uplink pre-scheduling is correct, the base station detects that the DCI-based BWP switching of the UE is successful, immediately stops the uplink pre-scheduling, clears the DCI-based BWP switching detection and protection flag of the UE, starts all uplink and downlink signal transmissions of the UE, and ends the DCI-based BWP switching detection and protection process.

[0057] The method for switching partial bandwidth of the present invention, when it is determined that the UE has a DCI-based BWP switching behavior, after a preset time delay, the base station quickly detects the UE's activated BWP-ID through uplink pre-scheduling, stops uplink and downlink signal transmission during the detection process, reduces transmission errors, improves UE service perception, reduces air interface resource waste, and improves spectrum utilization; and decides whether to schedule normally on the target BWP, or fall back to the source BWP and re-switch, or release the UE based on the corresponding detection results, so as to avoid the UE instance being hung on the base station side and wasting air interface physical resources.

[0058] The following combination Figure 2 and Figure 5 The method for switching a portion of bandwidth of the present invention is described, and the method further comprises the following steps:

[0059] S600: If the UE does not have a DCI-based BWP switching behavior, stop the method.

[0060] When the DCI is used for non-BWP switching, the method for switching a portion of the bandwidth of the present invention is terminated, that is, the BWP switching detection and protection process based on DCI is stopped.

[0061] The following combination Figure 3 and Figure 5 The method for switching a portion of bandwidth of the present invention is described, and the method further comprises the following steps:

[0062] S510. If the first verification information is incorrect, that is, when the base station detects that the CRC results of all PUSCHs corresponding to the first preset number of uplink pre-scheduling are all incorrect, the base station determines that the detection result of the DCI-based BWP switching of the UE is failure, and the target device stops uplink pre-scheduling on the target BWP, and falls back to the source BWP, and performs uplink pre-scheduling on the source BWP for the second consecutive preset number of times.

[0063] Preferably, the second preset number of times can also be set to 5 times, and the specific value of the second preset number of times can be adjusted according to actual conditions.

[0064] S520: Determine whether the second verification information corresponding to the uplink pre-scheduling of the source BWP is correct, wherein the second verification information is any cyclic redundancy check code in the physical uplink shared channel.

[0065] S530: If the second verification information is correct, re-perform the DCI-based BWP switching.

[0066] Similarly, if the base station detects that any CRC result in the PUSCH corresponding to the second preset number of uplink pre-scheduling is correct, the base station uses the currently activated BWP-ID of the UE as the source BWP-ID and re-performs the DCI-based BWP switching.

[0067] The following combination Figure 4 and Figure 5 The method for switching a portion of bandwidth of the present invention is described, and the method further comprises the following steps:

[0068] S540: If the second verification information is incorrect, release the target device.

[0069] If the base station detects that the CRC results of all PUSCHs corresponding to the second preset number of uplink pre-scheduling are all errors, the base station cannot determine the currently activated BWP-ID of the UE and immediately releases the UE instance.

[0070] The following describes a device for switching protection of a portion of bandwidth provided by the present invention. The device for switching protection of a portion of bandwidth described below and the method for switching a portion of bandwidth described above can refer to each other.

[0071] The following combination Figure 6 The invention provides an apparatus for partial bandwidth switching, the apparatus comprising:

[0072] The marking module 100 is configured to determine whether the UE has a DCI-based BWP switching behavior. If so, the UE is determined as a target UE, the BWP is determined as a target BWP, and the switching time is determined as the target time. The DCI-based BWP switching detection and protection of the UE is also performed.

[0073] In this embodiment, in the marking module 100, the BWP switching behavior based on DCI is judged by whether the BWP-ID indicated by the bit "Bandwidth partindicator" in the DCI is consistent with the BWP-ID activated by the current UE. If they are inconsistent, it is considered that the UE has a BWP switching behavior based on DCI. If they are consistent, it is considered that the DCI is used for non-BWP switching.

[0074] The stop module 200 is used to stop the uplink and downlink scheduling of the target device. It can be understood that this is to stop all uplink and downlink signal transmissions of the target device. In this embodiment, it includes but is not limited to new transmissions and retransmissions, control channels, namely the physical downlink control channel (Physical Downlink Control Channel, PDCCH) and the physical uplink control channel (Physical Uplink Control Channel, PUCCH), traffic channels, namely PDSCH and PUSCH, channel sounding reference signals (Sounding Reference Signal, SRS) and channel state information reference signals (Channel State Information-Reference Signal, CSI-RS).

[0075] The uplink pre-scheduling module 300 is configured to enable the target device to perform uplink pre-scheduling on the target BWP for a first preset number of times continuously after the target time is delayed by a preset time.

[0076] Preferably, the first preset number of times can be set to 5 times, and the specific value of the first preset number of times can be adjusted according to actual conditions.

[0077] The preset time can be considered as a delay time. In the partial bandwidth switching device of the present invention, a BWP switching delay timer is introduced. The preset time is recorded as T BWPswitchDelay , the target time is recorded as n, then at n+T BWPswitchDelay After the time, step S300 is executed.

[0078] The preset time depends on the UE capability. If the BWP switching involves a change in the subcarrier spacing (SCS), the preset time for the BWP switching is determined by the larger value between the SCS before the BWP switching and the SCS after the BWP switching. Preferably, the value of the preset time can be determined by referring to TS38.133 Table 8.6.2-1.

[0079] The verification module 400 is configured to determine whether the first verification information corresponding to the uplink pre-scheduling of the target BWP is correct, wherein the first verification information is any cyclic redundancy check (CRC) code in the physical uplink shared channel.

[0080] The first verification module 400 determines whether, after performing uplink pre-scheduling for a consecutive preset number of times, the base station detects that any CRC result in the PUSCH corresponding to the first preset number of uplink pre-scheduling times is correct.

[0081] The switching protection module 500 stops uplink pre-scheduling on the target BWP if the first verification information is correct, and starts uplink and downlink scheduling on the target BWP.

[0082] If the base station detects that any CRC result in the PUSCH corresponding to the first preset number of uplink pre-scheduling is correct, the base station detects that the DCI-based BWP switching of the UE is successful, immediately stops the uplink pre-scheduling, clears the DCI-based BWP switching detection and protection flag of the UE, starts all uplink and downlink signal transmissions of the UE, and ends the DCI-based BWP switching detection and protection process.

[0083] The device for switching partial bandwidth of the present invention, when it is determined that the UE has a DCI-based BWP switching behavior, after a preset time delay, the base station quickly detects the UE's activated BWP-ID through uplink pre-scheduling, stops uplink and downlink signal transmission during the detection process, reduces transmission errors, improves UE service perception, reduces air interface resource waste, and improves spectrum utilization; and decides whether to schedule normally on the target BWP, or fall back to the source BWP and re-switch, or release the UE based on the corresponding detection results, to avoid the UE instance being hung on the base station side and wasting air interface physical resources.

[0084] The following combination Figure 7 The device for switching a portion of the bandwidth of the present invention is described, and the device also includes:

[0085] The terminating module 600 is configured to stop the device if the UE does not have a DCI-based BWP switching behavior.

[0086] When DCI is used for non-BWP switching, the apparatus for switching a portion of the bandwidth of the present invention is terminated, that is, the BWP switching detection and protection process based on DCI is stopped.

[0087] The following combination Figure 8 The device for switching a portion of the bandwidth of the present invention is described, and the device also includes:

[0088] The fallback module 510 is used to determine that if the first verification information is incorrect, that is, when the base station detects that the CRC results of all PUSCHs corresponding to the first preset number of uplink pre-scheduling are all wrong, the base station determines that the detection result of the DCI-based BWP switching of the UE is a failure, and the target device stops uplink pre-scheduling on the target BWP, and falls back to the source BWP, and performs uplink pre-scheduling on the source BWP for a second consecutive preset number of times.

[0089] Preferably, the second preset number of times can also be set to 5 times, and the specific value of the second preset number of times can be adjusted according to actual conditions.

[0090] The second verification module 520 is configured to determine whether the second verification information corresponding to the uplink pre-scheduling of the source BWP is correct, wherein the second verification information is any cyclic redundancy check code in the physical uplink shared channel.

[0091] The bandwidth switching module 530 is configured to re-perform the BWP switching based on the DCI if the second verification information is correct.

[0092] Similarly, if the base station detects that any CRC result in the PUSCH corresponding to the second preset number of uplink pre-scheduling is correct, the base station uses the currently activated BWP-ID of the UE as the source BWP-ID and re-performs the DCI-based BWP switching.

[0093] The following combination Figure 9 The device for switching a portion of the bandwidth of the present invention is described, and the device further comprises the following steps:

[0094] The releasing module 540 is configured to release the target device if the second verification information is incorrect.

[0095] If the base station detects that the CRC results of all PUSCHs corresponding to the second preset number of uplink pre-scheduling are all errors, the base station cannot determine the currently activated BWP-ID of the UE and immediately releases the UE instance.

[0096] Figure 10 An example of a physical structure diagram of an electronic device is shown below. Figure 10 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute the method for switching partial bandwidth, which includes the following steps:

[0097] S100: Determine whether the UE has a BWP switching behavior based on DCI. If so, determine the UE as a target UE, determine the BWP as a target BWP, and determine the switching time as the target time.

[0098] S200: Stop uplink and downlink scheduling of the target device.

[0099] S300: After a preset time delay at the target time, the target device performs uplink pre-scheduling on the target BWP for a first preset number of consecutive times.

[0100] S400: Determine whether first verification information corresponding to the uplink pre-scheduling of the target BWP is correct, wherein the first verification information is any CRC in the physical uplink shared channel.

[0101] S500: If the first verification information is correct, the target device stops uplink pre-scheduling on the target BWP, and starts uplink and downlink scheduling on the target BWP.

[0102] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0103] On the other hand, the present invention further provides a computer program product, comprising a computer program stored on a non-transitory computer-readable storage medium, wherein the computer program comprises program instructions. When the program instructions are executed by a computer, the computer is capable of performing the method for switching partial bandwidth provided by the above methods, the method comprising the following steps:

[0104] S100: Determine whether the UE has a BWP switching behavior based on DCI. If so, determine the UE as a target UE, determine the BWP as a target BWP, and determine the switching time as the target time.

[0105] S200: Stop uplink and downlink scheduling of the target device.

[0106] S300: After a preset time delay at the target time, the target device performs uplink pre-scheduling on the target BWP for a first preset number of consecutive times.

[0107] S400: Determine whether first verification information corresponding to the uplink pre-scheduling of the target BWP is correct, wherein the first verification information is any CRC in the physical uplink shared channel.

[0108] S500: If the first verification information is correct, the target device stops uplink pre-scheduling on the target BWP, and starts uplink and downlink scheduling on the target BWP.

[0109] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the method for switching the provided partial bandwidths is implemented, the method comprising the following steps:

[0110] S100: Determine whether the UE has a BWP switching behavior based on DCI. If so, determine the UE as a target UE, determine the BWP as a target BWP, and determine the switching time as the target time.

[0111] S200: Stop uplink and downlink scheduling of the target device.

[0112] S300: After a preset time delay at the target time, the target device performs uplink pre-scheduling on the target BWP for a first preset number of consecutive times.

[0113] S400: Determine whether first verification information corresponding to the uplink pre-scheduling of the target BWP is correct, wherein the first verification information is any CRC in the physical uplink shared channel.

[0114] S500: If the first verification information is correct, the target device stops uplink pre-scheduling on the target BWP, and starts uplink and downlink scheduling on the target BWP.

[0115] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0116] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for switching a portion of bandwidth, characterized in that: The following steps are involved: Determine whether the user equipment has partial bandwidth switching behavior based on the downlink control information, and if so, determine the user equipment as a target device, determine the partial bandwidth as a target partial bandwidth, and determine the switching time as a target time; Stop uplink and downlink scheduling of the target device; After a preset time delay at the target time, the target device performs uplink pre-scheduling on the target portion of bandwidth for a first preset number of consecutive times; Determine whether first verification information corresponding to the uplink pre-scheduling in the target portion of the bandwidth is correct; wherein the first verification information is any cyclic redundancy check code in the physical uplink shared channel; If the first verification information is correct, the target device stops uplink pre-scheduling on the target portion of bandwidth and starts uplink and downlink scheduling on the target portion of bandwidth; If the first verification information is incorrect, the target device stops uplink pre-scheduling on the target partial bandwidth and performs uplink pre-scheduling on the source partial bandwidth for a second preset number of consecutive times; Determine whether the second verification information corresponding to the uplink pre-scheduling in the source portion of the bandwidth is correct; wherein the second verification information is any cyclic redundancy check code in the physical uplink shared channel; If the second verification information is correct, re-performing partial bandwidth switching based on the downlink control information; If the second verification information is incorrect, the target device is released.

2. The method for switching a portion of bandwidth according to claim 1, wherein: In the step of determining whether the user equipment has partial bandwidth switching behavior based on the downlink control information, the judgment is made by whether the BWP-ID indicated by the downlink control information is consistent with the BWP-ID activated by the user equipment. If they are inconsistent, it is considered that the user equipment has partial bandwidth switching behavior based on the downlink control information; if they are consistent, it is considered that the downlink control information is used for non-partial bandwidth switching.

3. The method for switching a portion of bandwidth according to claim 2, wherein: The method further comprises the following steps: If the user equipment does not have any partial bandwidth switching behavior based on the downlink control information, the method is stopped.

4. The method for switching a portion of bandwidth according to claim 1, wherein: The preset time depends on the UE capability, and if the partial bandwidth switching involves a change in subcarrier spacing, the preset time for the partial bandwidth switching is determined by the larger value between the subcarrier spacing before the partial bandwidth switching and the subcarrier spacing after the partial bandwidth switching.

5. The method for switching a portion of bandwidth according to claim 1, wherein: Uplink and downlink scheduling includes new transmission and retransmission, physical downlink control channel, physical uplink control channel, physical downlink shared channel, physical uplink shared channel, channel sounding reference signal and channel state information reference signal.

6. A device for switching partial bandwidth, characterized in that: include: A marking module (100) is used to determine whether the user equipment has a partial bandwidth switching behavior based on the downlink control information, and if so, determine the user equipment as a target device, determine the partial bandwidth as a target partial bandwidth, and determine the switching time as a target time; A stop module (200), configured to stop uplink and downlink scheduling of the target device; An uplink pre-scheduling module (300) is configured to perform uplink pre-scheduling on the target device on the target portion of bandwidth for a first preset number of times continuously after a preset time delay at the target time; A first verification module (400) is used to determine whether first verification information corresponding to the uplink pre-scheduling in the target portion of bandwidth is correct; wherein the first verification information is any cyclic redundancy check code in the physical uplink shared channel; A switching protection module (500) is configured to, if the first verification information is correct, cause the target device to stop uplink pre-scheduling on the target portion of bandwidth and start uplink and downlink scheduling on the target portion of bandwidth; A fallback module (510) is configured to, if the first verification information is incorrect, cause the target device to stop uplink pre-scheduling on the target partial bandwidth and perform uplink pre-scheduling on the source partial bandwidth for a second preset number of times; A second verification module (520) is configured to determine whether second verification information corresponding to the uplink pre-scheduling in the source portion of the bandwidth is correct; wherein the second verification information is any cyclic redundancy check code in the physical uplink shared channel; A bandwidth switching module (530) is configured to re-perform partial bandwidth switching based on downlink control information if the second verification information is correct; A release module (540) is configured to release the target device if the second verification information is incorrect.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the method for switching a portion of bandwidth as claimed in any one of claims 1 to 5 are implemented.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for switching a portion of bandwidth as claimed in any one of claims 1 to 5 are implemented.

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