Bandwidth part (BWP) switching method and apparatus, and storage medium

Abstract

The present disclosure provides a partial bandwidth (BWP) switching method and device, and a storage medium. The method comprises: in response to determining to perform BWP switching on a serving cell, determining a first BWP to be switched to; wherein the serving cell is any one cell that can be scheduled by multi-cell downlink control information (MC-DCI); and switching to the first BWP on the serving cell, and performing data sending and / or receiving on the first BWP. The present disclosure improves the BWP switching mechanism on the basis of introducing MC-DCI, is conducive to improving the terminal data transmission performance, and ensures consistent understanding of the base station and the terminal, and has high availability.

Description

Technical Field

[0001] This disclosure relates to the field of communications, and in particular to methods and apparatus for partial bandwidth BWP switching, and storage media. Background Technology

[0002] Currently, the terminal side can trigger Bandwidth Part (BWP) switching in several ways. There are three types: RRC configuration, DCI triggering, or Timer-based BWP switching.

[0003] In this scenario, the terminal can trigger BWP handover based on Downlink Control Information (DCI). However, in the multi-carrier scheduling scenario of Release-18 (Rel-18), DCI that schedules data from multiple cells, namely Multi-Cell DCI (MC-DCI), was introduced. Accordingly, the triggering mechanism of the BWP handover process needs further optimization. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a partial bandwidth BWP switching method, apparatus, and storage medium.

[0005] According to a first aspect of the present disclosure, a partial bandwidth BWP switching method is provided, the method being executed by a terminal, comprising:

[0006] In response to determining that a BWP handover will be performed on the serving cell, the first BWP to be handed over to is determined; wherein, the serving cell is any cell that can be scheduled by multi-cell downlink control information (MC-DCI);

[0007] On the serving cell, switch to the first BWP, and perform data transmission and / or reception on the first BWP.

[0008] Optionally, determining to perform a BWP handover on the serving cell includes at least one of the following:

[0009] In response to a Radio Resource Control (RRC) indication message instructing the terminal to perform a BWP handover on the serving cell, it is determined that a BWP handover will be performed on the serving cell;

[0010] In response to the legacy DCI instructing the terminal to perform a BWP handover on the serving cell, it is determined that a BWP handover is performed on the serving cell;

[0011] In response to the MC-DCI instructing the terminal to perform a BWP handover on the serving cell, it is determined that a BWP handover is performed on the serving cell; wherein the serving cell is one of a plurality of cells scheduled by the MC-DCI;

[0012] In response to a BWP timer timeout, a BWP handover is determined to be performed on the serving cell.

[0013] Optionally, the method further includes:

[0014] In response to receiving the Physical Downlink Control Channel (PDCCH) of the serving cell, the system determines whether the BWP timer should start or restart timing; wherein the PDCCH is scrambled using the First Radio Network Temporary Identifier (RNTI).

[0015] Optionally, the first RNTI includes at least one of the following:

[0016] Temporary Identifier for Cellular Wireless Network (C-RNTI)

[0017] Configure the temporary identifier CS-RNTI for the wireless network;

[0018] RNTI used to scramble the MC-DCI.

[0019] Optionally, determining the first BWP to which to switch includes at least one of the following:

[0020] The first BWP is determined based on the RRC indication message;

[0021] Based on the indication from the legacy DCI, the first BWP is determined;

[0022] Based on the indication of the MC-DCI, the first BWP is determined;

[0023] The first BWP is determined based on the indication of the BWP Timer.

[0024] Optionally, the method further includes:

[0025] If the received MC-DCI and legacy DCI overlap in the time domain, it is not expected that the received MC-DCI and legacy DCI will indicate different BWP states.

[0026] Optionally, the method further includes:

[0027] In response to receiving that the MC-DCI and legacy DCI overlap in the time domain and that the MC-DCI and legacy DCI indicate different BWP states, a determination is made as to whether to perform a BWP handover on the serving cell.

[0028] Optionally, the different BWP states include at least one of the following:

[0029] Different states; wherein, the states include performing BWP switching or not performing BWP switching;

[0030] Different first BWP identifiers.

[0031] Optionally, determining whether to perform a BWP handover on the serving cell includes:

[0032] Based on the indication from the MC-DCI, determine whether to perform a BWP handover on the serving cell.

[0033] Optionally, determining the first BWP to switch to includes:

[0034] The first BWP is determined based on the indication of the MC-DCI.

[0035] Optionally, determining whether to perform a BWP handover on the serving cell includes:

[0036] Based on the indication from the legacy DCI, determine whether to perform a BWP handover on the serving cell.

[0037] Optionally, determining the first BWP to switch to includes:

[0038] The first BWP is determined based on the indication of the legacy DCI.

[0039] Optionally, determining whether to perform a BWP handover on the serving cell includes:

[0040] It was determined that no BWP handover would be performed on the serving cell.

[0041] Optionally, determining whether to perform a BWP handover on the serving cell includes:

[0042] Based on the indication of the first DCI, it is determined that a BWP handover will be performed on the serving cell; wherein, the first DCI is the DCI that indicates the BWP handover to be performed between the MC-DCI and the legacy DCI; or,

[0043] Based on the indication of the second DCI, it is determined that no BWP handover will be performed on the serving cell; wherein the second DCI is the DCI that indicates no BWP handover between the MC-DCI and the legacy DCI.

[0044] Optionally, determining the first BWP to switch to includes:

[0045] The first BWP is determined based on the instruction of the first DCI.

[0046] Optionally, the method further includes:

[0047] If the MC-DCI and legacy DCI indicate different states, determine to perform the BWP switch.

[0048] Optionally, determining the first BWP to switch to includes:

[0049] If the MC-DCI indicates that a BWP handover should be performed, then the first BWP is determined based on the MC-DCI indication; or,

[0050] If the legacy DCI indicates that a BWP switch should be performed, then the first BWP is determined based on the legacy DCI indication.

[0051] Optionally, the method further includes:

[0052] If the MC-DCI and the legacy DCI indicate that a BWP handover should be performed, but indicate a different first BWP identifier, then the BWP handover should be performed.

[0053] Optionally, determining the first BWP to which to switch includes any of the following:

[0054] Based on the indication of the MC-DCI, the first BWP is determined;

[0055] Based on the indication from the legacy DCI, the first BWP is determined;

[0056] The first BWP is determined based on the BWP that is currently transmitting and / or receiving data.

[0057] According to a second aspect of the present disclosure, a partial bandwidth BWP handover method is provided, the method being performed by a base station, comprising:

[0058] Determine the first BWP to which the terminal is to be handed over on the serving cell; wherein, the serving cell is any cell that can be scheduled by multi-cell downlink control information (MC-DCI);

[0059] Data reception and / or transmission are performed on the first BWP with the terminal.

[0060] Optionally, the method further includes at least one of the following:

[0061] A Radio Resource Control (RRC) indication message is sent to the terminal, and the RRC indication message instructs the terminal to perform a BWP handover on the serving cell;

[0062] Send a legacy DCI to the terminal, and the legacy DCI instructs the terminal to perform a BWP handover on the serving cell;

[0063] The MC-DCI is sent to the terminal, and the MC-DCI instructs the terminal to perform a BWP handover on the serving cell.

[0064] Optionally, the method further includes at least one of the following:

[0065] The first BWP is indicated via the RRC indication message;

[0066] The first BWP is indicated by the legacy DCI;

[0067] The first BWP is indicated by the MC-DCI.

[0068] Optionally, the method further includes:

[0069] The terminal sends a Physical Downlink Control Channel (PDCCH) for scheduling the serving cell; wherein the PDCCH is scrambled by a First Radio Network Temporary Identifier (RNTI).

[0070] Optionally, the first RNTI includes at least one of the following:

[0071] Temporary Identifier for Cellular Wireless Network (C-RNTI)

[0072] Configure the temporary identifier CS-RNTI for the wireless network;

[0073] RNTI used to scramble the MC-DCI.

[0074] Optionally, determining the first BWP to which the terminal is to hand over on the serving cell includes:

[0075] The first BWP is determined based on the indication of the BWP Timer on the terminal.

[0076] Optionally, the method further includes:

[0077] In response to determining that the terminal receives overlapping MC-DCI and legacy DCI in the time domain, and that the MC-DCI and legacy DCI indicate different BWP states, the terminal determines whether to perform BWP handover on the serving cell.

[0078] Optionally, the different BWP states include at least one of the following:

[0079] Different states; wherein the states include performing a BWP switch or not performing a BWP switch;

[0080] Different first BWP identifiers.

[0081] Optionally, determining whether the terminal performs a BWP handover on the serving cell includes:

[0082] Based on the instruction from the MC-DCI, the terminal determines whether to perform a BWP handover on the serving cell.

[0083] Optionally, determining the first BWP to which the terminal is to hand over on the serving cell includes:

[0084] The first BWP is determined based on the indication of the MC-DCI.

[0085] Optionally, determining whether the terminal performs a BWP handover on the serving cell includes:

[0086] Based on the instruction from the legacy DCI, the terminal determines whether to perform a BWP handover on the serving cell.

[0087] Optionally, determining the first BWP to which the terminal is to hand over on the serving cell includes:

[0088] The first BWP is determined based on the indication of the legacy DCI.

[0089] Optionally, determining whether the terminal performs a BWP handover on the serving cell includes:

[0090] It is determined that the terminal does not perform BWP handover on the serving cell.

[0091] Optionally, determining whether the terminal performs a BWP handover on the serving cell includes:

[0092] Based on the indication of the first DCI, it is determined that the terminal performs a BWP handover on the serving cell; wherein, the first DCI is the DCI that indicates the performance of the BWP handover between the MC-DCI and the legacy DCI; or,

[0093] Based on the indication of the second DCI, it is determined that the terminal will not perform BWP handover on the serving cell; wherein, the second DCI is the DCI that indicates not to perform BWP handover between the MC-DCI and the legacy DCI.

[0094] Optionally, determining the first BWP to which the terminal is to hand over on the serving cell includes:

[0095] The first BWP is determined based on the instruction of the first DCI.

[0096] Optionally, the method further includes:

[0097] If the MC-DCI and legacy DCI indicate different states, it is determined that the terminal is performing the BWP handover on the serving cell.

[0098] Optionally, determining the first BWP to which the terminal is to hand over on the serving cell includes:

[0099] If the MC-DCI indicates that a BWP handover should be performed, then the first BWP is determined based on the MC-DCI indication; or,

[0100] If the legacy DCI indicates that a BWP switch should be performed, then the first BWP is determined based on the legacy DCI indication.

[0101] Optionally, the method further includes:

[0102] If the MC-DCI and the legacy DCI indicate that a BWP handover is to be performed, but indicate a different first BWP identifier, it is determined that the terminal is performing the BWP handover on the serving cell.

[0103] Optionally, determining the first BWP to which the terminal is to hand over on the serving cell includes:

[0104] Based on the indication of the MC-DCI, the first BWP is determined;

[0105] Based on the indication from the legacy DCI, the first BWP is determined;

[0106] The first BWP is determined based on the BWP that is currently transmitting and / or receiving data.

[0107] According to a third aspect of the present disclosure, a partial bandwidth BWP switching device is provided, the device being applied to a terminal, comprising:

[0108] The first determining module is configured to determine the first BWP to be handed over to in response to determining that a BWP handover will be performed on the serving cell; wherein the serving cell is any cell that can be scheduled by multi-cell downlink control information (MC-DCI);

[0109] The handover module is configured to switch to the first BWP on the serving cell and perform data transmission and / or reception on the first BWP.

[0110] According to a fourth aspect of the present disclosure, a partial bandwidth BWP handover apparatus is provided, the apparatus being applied to a base station, comprising:

[0111] The second determining module is configured to determine the first BWP to which the terminal is to be handed over on the serving cell; wherein, the serving cell is any cell that can be scheduled by multi-cell downlink control information (MC-DCI);

[0112] The execution module is configured to receive and / or send data with the terminal on the first BWP.

[0113] According to a fifth aspect of the present disclosure, a computer-readable storage medium is provided, the storage medium storing a computer program for executing the partial bandwidth BWP switching method described in any of the above-described terminal-side embodiments.

[0114] According to a sixth aspect of the present disclosure, a computer-readable storage medium is provided, the storage medium storing a computer program for performing the partial bandwidth BWP handover method described in any of the above-described base station side methods.

[0115] According to a seventh aspect of the present disclosure, a partial bandwidth BWP switching device is provided, comprising:

[0116] processor;

[0117] Memory used to store processor-executable instructions;

[0118] The processor is configured to execute the partial bandwidth BWP switching method described in any of the above-described terminal-side methods.

[0119] According to an eighth aspect of the present disclosure, a partial bandwidth BWP switching device is provided, comprising:

[0120] processor;

[0121] Memory used to store processor-executable instructions;

[0122] The processor is configured to execute the partial bandwidth BWP handover method described in any of the above-described base station side methods.

[0123] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0124] In this disclosure, when the serving cell of the terminal is any cell that can be scheduled by Multi-Cell Downlink Control Information (MC-DCI), the terminal can determine the first BWP to be handed over to in response to deciding to perform a BWP handover on the serving cell, and then perform a BWP handover on the serving cell to switch to the first BWP, thereby transmitting and / or receiving data with the base station on the first BWP. This disclosure improves the BWP handover mechanism by introducing MC-DCI, which is beneficial for improving the terminal's data transmission performance and ensuring consistent understanding between the base station and the terminal, resulting in high availability.

[0125] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0126] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0127] Figure 1 This is a schematic diagram illustrating a single DCI scheduling of multiple cells' PDSCHs according to an exemplary embodiment.

[0128] Figure 2 This is a schematic diagram illustrating a BWP switching method according to an exemplary embodiment.

[0129] Figure 3 This is a schematic diagram illustrating another BWP switching method flow according to an exemplary embodiment.

[0130] Figure 4 This is a schematic diagram illustrating another BWP switching method flow according to an exemplary embodiment.

[0131] Figure 5 This is a schematic diagram illustrating another BWP switching method flow according to an exemplary embodiment.

[0132] Figure 6 This is a block diagram of a BWP switching device according to an exemplary embodiment.

[0133] Figure 7 This is a block diagram of another BWP switching device according to an exemplary embodiment.

[0134] Figure 8 This is a schematic diagram of a BWP switching device according to an exemplary embodiment of the present disclosure.

[0135] Figure 9 This is a schematic diagram of another BWP switching device illustrated in an exemplary embodiment of the present disclosure. Detailed Implementation

[0136] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0137] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of at least one associated listed item.

[0138] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0139] 5G New Radio (NR) technology operates over a relatively wide spectrum. With the refarming of existing cellular network bands, spectrum utilization will steadily improve. This is especially true for Frequency Range 1 (FR1), where available frequency resources are becoming increasingly fragmented. To meet diverse spectrum needs, these dispersed spectrum resources require higher spectrum and power efficiency, and more flexible utilization, thereby achieving higher network throughput and better coverage.

[0140] Based on mechanisms such as versions 15 and 16, a single DCI within a serving cell is only allowed to schedule data from one cell. Meanwhile, to reduce control signaling overhead, Rel-18 WID supports a single DCI scheduling the Physical Downlink Shared Channel (PDSCH) or Physical Uplink Shared Channel (PUSCH) of multiple cells. It should be noted that each cell corresponds to one PDSCH and one PUSCH. Scheduling the PDSCH of three cells using a single DCI can, for example… Figure 1 As shown.

[0141] In this disclosure, the terminal can trigger BWP handover based on DCI, and the Physical Downlink Control Channel (PDCCH) indicating BWP handover can only be transmitted in the first 3 symbols of a slot. At the same time, in the Time Division Duplex (TDD) scenario, in order to ensure uplink and downlink consistency, the DCI used to schedule uplink transmission or the BWP domain included in the DCI used to schedule downlink transmission can simultaneously trigger uplink (UL) BWP and downlink (DL) BWP handover (at this time, the UL BWP handover and DL BWP handover corresponding to the same BWP identifier are triggered). During the BWP handover, the terminal does not expect to receive detection PDCCH or transmit data.

[0142] As mentioned above, BWP handover can be triggered based on DCI. However, in the Rel-18 multi-carrier scheduling scenario, with the introduction of MC-DCI, the triggering mechanism for the corresponding BWP handover process of at least one scheduled cell in MC-DCI scheduling needs to be further designed.

[0143] To address the aforementioned technical issues, this disclosure provides the following BWP handover method, apparatus, and storage medium. Based on the introduction of MC-DCI, the BWP handover mechanism is improved, which is beneficial for enhancing terminal data transmission performance and ensuring consistent understanding between the base station and the terminal, resulting in high availability.

[0144] The following section will first introduce the BWP switching method provided in this publication from the perspective of the terminal side.

[0145] This disclosure provides a BWP handover method, referring to... Figure 2 As shown, Figure 2 This is a flowchart illustrating a BWP handover method according to an embodiment, which can be executed by a terminal. The method may include the following steps:

[0146] In step 201, in response to determining that a BWP handover is to be performed on the serving cell, the first BWP to which the handover is to be performed is determined.

[0147] In this embodiment of the disclosure, the serving cell is any cell that can be scheduled by MC-DCI. It should be noted that although the serving cell can be scheduled by MC-DCI, the MC-DCI received by the terminal at a certain moment may not necessarily include the serving cell.

[0148] For example, cell #1, cell #2, cell #3 and cell #4 are all cells that can be scheduled by MC-DCI. The terminal is currently serving cell #3. At time T1, the terminal receives multiple cells scheduled by MC-DCI, including cell #1 and cell #2.

[0149] In this embodiment of the disclosure, BWP switching refers to switching a BWP that is in an active state. BWP switching includes, but is not limited to, downlink BWP switching and / or uplink BWP switching.

[0150] For example, the base station configures multiple downlink BWPs for the terminal, but only one downlink BWP can be active at any given time. The terminal uses a different downlink BWP than the one used in the previous period to perform data reception, which is called downlink BWP handover.

[0151] For example, the base station configures multiple uplink BWPs for the terminal, but only one uplink BWP can be active at any given time. The terminal uses a different uplink BWP than the one used in the previous period to send data, which is called uplink BWP handover.

[0152] In this embodiment of the disclosure, the first BWP refers to the BWP to which the terminal is to be switched, that is, the BWP to which the terminal is about to switch.

[0153] In one possible implementation, if the serving cell is not currently scheduled by MC-DCI, the terminal can determine whether to perform a BWP handover on the serving cell and determine the first BWP to which it will handover to based on any of the following methods:

[0154] Method 1: The terminal responds to a Radio Resource Control (RRC) indication message, instructing the terminal to perform a BWP handover on the serving cell, and confirms that a BWP handover is to be performed on the serving cell.

[0155] Accordingly, the terminal can determine the first BWP to which it is to be handed over based on the RRC indication message.

[0156] Method 2: The terminal responds to the legacy DCI instruction to perform a BWP handover on the serving cell, and determines that a BWP handover is to be performed on the serving cell.

[0157] Accordingly, the terminal determines the first BWP to which it will hand over based on the indication from the legacy DCI.

[0158] For example, legacy DCI can be a DCI format defined based on version 15 (Release-15, Rel-15), version 16 (Release-16, Rel-16), and version 17 (Release-17, Rel-17). MC-DCI, introduced in Rel-18, is not within the scope of legacy DCI.

[0159] For example, the legacy DCI can instruct the terminal to perform a BWP handover on the serving cell through the included BWP field. For instance, setting the bit value of a preset bit in the BWP field to a preset bit value instructs the terminal to perform a BWP handover on the serving cell. Additionally, the BWP field included in the legacy DCI can also indicate the identifier of the first BWP. The preset bit value can be 1 or 0, and this disclosure does not limit this.

[0160] Method 3: The terminal responds to the BWP timer timeout by determining to perform a BWP handover on the serving cell.

[0161] Accordingly, the terminal determines the first BWP based on the indication of the BWP Timer.

[0162] For example, the BWP Timer can be a bwp-InactivityTimer.

[0163] For example, the terminal predetermines a default BWP, and in response to the BWP Timer timeout, the terminal switches to the default BWP as the first BWP.

[0164] In this embodiment of the disclosure, it should be noted that, in response to receiving the PDCCH of the serving cell, the terminal determines whether the BWP timer should start or restart. The PDCCH is scrambled using a first Radio Network Temporary Identity (RNTI).

[0165] For example, the first RNTI includes, but is not limited to, at least one of the following: Cell-RadioNetworkTemporaryIdentifier (C-RNTI); and ConfiguredScheduling-RadioNetworkTemporaryIdentifier (CS-RNTI).

[0166] For example, in response to receiving the PDCCH of the serving cell scrambled by C-RNTI, the terminal determines whether the BWP timer should start or restart.

[0167] For example, in response to receiving the PDCCH of the serving cell scrambled by CS-RNTI, the terminal determines whether the BWP timer should start or restart.

[0168] In another possible implementation, if the serving cell is currently scheduled by MC-DCI, the terminal can determine whether to perform a BWP handover on the serving cell and determine the first BWP to which it will handover to based on any of the following methods:

[0169] Method 1: The terminal responds to the RRC indication message, instructing the terminal to perform a BWP handover on the serving cell, and confirms that a BWP handover is performed on the serving cell.

[0170] Accordingly, the terminal can determine the first BWP to which it is to be handed over based on the RRC indication message.

[0171] Method 2: The terminal responds to the legacy DCI instruction to perform a BWP handover on the serving cell, and determines that a BWP handover is to be performed on the serving cell.

[0172] Accordingly, the terminal determines the first BWP to which it will hand over based on the indication from the legacy DCI.

[0173] The specific implementation method is similar to Method 2 when the serving cell is not scheduled by MC-DCI, and will not be described in detail here.

[0174] Method 3: The terminal responds to the MC-DCI instruction to perform a BWP handover on the serving cell, and determines to perform a BWP handover on the serving cell.

[0175] It should be noted that the serving cell at this time is one of the multiple cells scheduled by the MC-DCI. For example, cells #1, #2, #3 and #4 are all cells that can be scheduled by the MC-DCI. At time T2, the multiple cells scheduled by the MC-DCI received by the terminal include cells #1 and #2, and the serving cell where the terminal is located is cell #1.

[0176] For example, MC-DCI can schedule data transmission across multiple cells. Each cell's data transmission corresponds to one PDSCH and / or one PUSCH. MC-DCI can use DCI format 0_X or DCI format 1_X, where X is an integer value greater than or equal to 3, and this disclosure does not limit this.

[0177] For example, the MC-DCI can instruct the terminal to perform a BWP handover on the serving cell through the included preset information fields. For instance, setting the bit value of a preset bit in the preset information field to a preset bit value instructs the terminal to perform a BWP handover on the serving cell. The preset bit value can be 1 or 0, and this disclosure does not limit this. In addition, the preset information fields included in the MC-DCI can also indicate the identifier of the first BWP. The preset information fields can be agreed upon by the protocol and specifically used to indicate information related to BWP handover, or they can reuse existing information fields in the MC-DCI, and this disclosure does not limit this.

[0178] Method 4: In response to the BWP timer timeout, the terminal determines to perform a BWP handover on the serving cell. Accordingly, the terminal determines the first BWP based on the indication of the BWP Timer.

[0179] For example, the BWP Timer can be a bwp-InactivityTimer.

[0180] For example, the terminal predetermines a default BWP, and the terminal can switch to the default BWP in response to the BWP Timer timeout.

[0181] In this embodiment of the disclosure, it should be noted that, in response to receiving the PDCCH of the serving cell, the terminal determines whether the BWP timer should start or restart. The PDCCH is scrambled using a first RNTI.

[0182] For example, the first RNTI includes, but is not limited to, at least one of the following: C-RNTI; CS-RNTI; RNTI for scrambling the MC-DCI.

[0183] The RNTI used to scramble the MC-DCI can be represented as xx-RNTI (the specific character corresponding to "xx" can be defined by the protocol).

[0184] For example, in response to receiving the PDCCH of the serving cell scrambled by C-RNTI, the terminal determines whether the BWP timer should start or restart.

[0185] For example, in response to receiving the PDCCH of the serving cell scrambled by CS-RNTI, the terminal determines whether the BWP timer should start or restart.

[0186] For example, in response to receiving the PDCCH of the serving cell scrambled by xx-RNTI, the terminal determines whether the BWP timer should start or restart timing.

[0187] In step 202, on the serving cell, the user switches to the first BWP and performs data transmission and / or reception on the first BWP.

[0188] In this embodiment of the disclosure, after the terminal determines the first BWP, it can perform a BWP handover on the serving cell to switch to the first BWP. Then, data transmission and / or reception can be performed on the first BWP.

[0189] In the above embodiments, the BWP handover mechanism is improved based on the introduction of MC-DCI, which is beneficial to improve the terminal data transmission performance and ensures that the base station and the terminal have consistent understanding and high availability.

[0190] In some alternative embodiments, the terminal may receive MC-DCI and legacy DCI in the serving cell. If the received MC-DCI and legacy DCI overlap in the time domain, the terminal does not expect the received MC-DCI and legacy DCI to indicate different BWP states.

[0191] The different BWP states include at least one of the following: different states; wherein the states include performing a BWP switch or not performing a BWP switch; different first BWP identifiers.

[0192] For example, if the terminal receives MC-DCI on two adjacent symbols s1 and s2 within slot#n (s1 and s2 are located within the first 3 symbols), and receives legacy DCI on two adjacent symbols s2 and s3, that is, the received MC-DCI and legacy DCI overlap in the time domain, then the terminal does not expect MC-DCI and legacy DCI to indicate different states and / or different first BWP identifiers.

[0193] For example, the terminal does not expect the MC-DCI indication to include performing a BWP handover, while the legacy DCI indication to include not performing a BWP handover. And / or, the terminal does not expect the MC-DCI to indicate that the first BWP to be handed over to is BWP#2, while the legacy DCI indicates that the first BWP to be handed over to is BWP#1.

[0194] In the above embodiments, if the received MC-DCI and legacy DCI overlap in the time domain, the terminal does not expect the received MC-DCI to indicate different BWP states than the legacy DCI. This ensures the accuracy of the terminal's behavior and high availability.

[0195] In some alternative embodiments, refer to Figure 3 As shown, Figure 3 This is a flowchart illustrating a BWP handover method according to an embodiment, which can be executed by a terminal. The method may include the following steps:

[0196] In step 301, in response to receiving that the MC-DCI and legacy DCI overlap in the time domain and that the MC-DCI and legacy DCI indicate different BWP states, it is determined whether to perform a BWP handover on the serving cell.

[0197] In this embodiment of the disclosure, if the terminal receives overlapping MC-DCI and legacy DCI in the time domain, and the MC-DCI and legacy DCI indicate different BWP states, the terminal can determine whether to perform BWP handover on the serving cell using any of the following methods. The different BWP states include at least one of the following: different states; wherein the states include performing BWP handover or not performing BWP handover; different first BWP identifiers.

[0198] Method 1: Determine whether to perform BWP handover on the serving cell based on the indication of MC-DCI or legacy DCI.

[0199] In one possible implementation, the terminal may determine whether to perform a BWP handover on the serving cell based on the MC-DCI instruction, as agreed by the protocol.

[0200] For example, if the state indicated by the MC-DCI includes performing a BWP handover, then the terminal determines that it is performing a BWP handover on the serving cell.

[0201] For example, if the state indicated by MC-DCI includes not performing BWP handover, then the terminal determines that it will not perform BWP handover on the serving cell.

[0202] In another possible implementation, the protocol allows the terminal to determine whether to perform a BWP handover on the serving cell based on instructions from the legacy DCI.

[0203] For example, if the status indicated by the legacy DCI includes performing a BWP handover, then the terminal determines that it is performing a BWP handover on the serving cell.

[0204] For example, if the legacy DCI indicates a state where BWP handover is not performed, then the terminal determines that it will not perform BWP handover on the serving cell.

[0205] Method 2: Determine that BWP handover will not be performed on the serving cell.

[0206] In this embodiment of the disclosure, if the received MC-DCI and legacy DCI overlap in the time domain, and the MC-DCI and legacy DCI indicate different BWP states, the terminal directly determines that it will not perform BWP handover on the serving cell.

[0207] Method 3: Based on the indication of a specific DCI, determine whether to perform a BWP handover on the serving cell.

[0208] In one possible implementation, the protocol may stipulate that a BWP handover be performed on the serving cell based on the indication of a first DCI. The first DCI is the MC-DCI and the legacy DCI that indicate the need for a BWP handover.

[0209] For example, if the state indicated by the MC-DCI includes performing a BWP handover, and the state indicated by the legacy DCI includes not performing a BWP handover, then the MC-DCI is determined as the first DCI, and the terminal determines to perform a BWP handover on the serving cell based on the indication of the MC-DCI.

[0210] For example, if the state indicated by the MC-DCI includes performing no BWP handover, and the state indicated by the legacy DCI includes performing BWP handover, then the legacy DCI is determined as the first DCI, and the terminal determines to perform BWP handover on the serving cell based on the indication of the legacy DCI.

[0211] In another possible implementation, the protocol may stipulate, based on the indication of the second DCI, that no BWP handover should be performed on the serving cell. The second DCI is the MC-DCI and the legacy DCI that indicate no BWP handover should be performed.

[0212] For example, if the state indicated by the MC-DCI includes performing BWP handover, and the state indicated by the legacy DCI includes not performing BWP handover, then the legacy DCI is determined as the second DCI, and the terminal determines not to perform BWP handover on the serving cell based on the indication of the legacy DCI.

[0213] For example, if the state indicated by the MC-DCI includes not performing BWP handover, and the state indicated by the legacy DCI includes performing BWP handover, then the MC-DCI is determined to be the second DCI, and the terminal determines not to perform BWP handover on the serving cell based on the indication of the MC-DCI.

[0214] Method 4: Confirm the execution of the BWP switch.

[0215] In one possible implementation, if the MC-DCI and legacy DCI indicate the different states, the terminal can determine to perform the BWP handover.

[0216] In another possible implementation, if both the MC-DCI and the legacy DCI indicate a state that includes performing a BWP handover, but the MC-DCI and the legacy DCI indicate different first BWP identifiers, then the terminal can determine to perform the BWP handover.

[0217] In this embodiment of the disclosure, if it is determined in this step that a BWP handover will be performed, the terminal will continue to execute subsequent steps 302 and 303; if it is determined in this step that a BWP handover will not be performed, the terminal will end the current process.

[0218] In step 302, in response to determining that a BWP handover is to be performed on the serving cell, the first BWP to which the handover is to be performed is determined.

[0219] In this embodiment of the disclosure, the first BWP refers to the BWP to which the terminal is to be switched, that is, the BWP to which the terminal is about to switch.

[0220] In one possible implementation, in step 301, the terminal determines, according to method one, to perform a BWP handover on the serving cell based on the instruction of the MC-DCI. Accordingly, the terminal determines the first BWP based on the instruction of the MC-DCI.

[0221] The method for determining the first BWP is similar to the method for determining the first BWP based on the indication of MC-DCI in the above embodiments, and will not be described again here.

[0222] After the terminal determines to perform BWP handover in step 301 according to method one based on the instruction of legacy DCI, the terminal determines the first BWP accordingly based on the instruction of legacy DCI.

[0223] The method for determining the first BWP is similar to the method for determining the first BWP based on the legacy DCI instruction in the above embodiments, and will not be described again here.

[0224] In another possible implementation, in step 301, the terminal, according to method three, determines to perform a BWP handover on the serving cell based on the indication of the first DCI. Accordingly, the terminal determines the first BWP based on the indication of the first DCI. Here, the first DCI is the DCI in both the MC-DCI and the legacy DCI that indicates the execution of the BWP handover.

[0225] In one possible implementation, the terminal determines in step 301 that a BWP handover will be performed on the serving cell according to method four. If the MC-DCI and the legacy DCI indicate different states, the terminal can determine the first BWP based on the DCI indicating that a BWP handover will be performed.

[0226] For example, if the state indicated by the MC-DCI includes performing a BWP handover, and the state indicated by the legacy DCI includes not performing a BWP handover, then the terminal determines the first BWP based on the indication of the MC-DCI.

[0227] For example, if the state indicated by the MC-DCI includes not performing BWP handover, and the state indicated by the legacy DCI includes performing BWP handover, then the terminal determines the first BWP based on the indication of the legacy DCI.

[0228] Alternatively, if the MC-DCI and the legacy DCI indicate the execution of a BWP handover, but indicate different first BWP identifiers, the terminal can determine the first BWP based on the indication of the MC-DCI.

[0229] Alternatively, the terminal can determine the first BWP based on the instructions from the legacy DCI.

[0230] Alternatively, the terminal determines the first BWP based on the BWP that is currently transmitting and / or receiving data.

[0231] The terminal can determine the mapped BWP corresponding to the BWP that is currently transmitting and / or receiving data, based on the mapping relationship between any two BWPs (the identifiers of any two BWPs can be the same or different), and designate the mapped BWP as the first BWP. This mapping relationship can be configured by the base station or agreed upon by a protocol; this disclosure does not limit its scope.

[0232] Of course, if the identifier of the mapped BWP is the same as the identifier of the BWP that is currently sending and / or receiving data, the terminal may not need to perform a BWP handover.

[0233] In step 303, on the serving cell, the user switches to the first BWP and performs data transmission and / or reception on the first BWP.

[0234] In this embodiment of the disclosure, after the terminal determines the first BWP, it can perform a BWP handover on the serving cell to switch to the first BWP. Then, data transmission and / or reception can be performed on the first BWP.

[0235] In the above embodiments, if the received MC-DCI and legacy DCI overlap in the time domain and indicate different BWP states, the terminal can use any of the above methods to determine whether to perform BWP handover. This achieves the purpose of improving the BWP handover mechanism based on the introduction of MC-DCI, which is beneficial to improving the terminal's data transmission performance and ensuring that the base station and the terminal have consistent understanding and high availability.

[0236] Next, we will introduce the BWP handover method provided in this publication from the perspective of the base station.

[0237] This disclosure provides a BWP handover method, referring to... Figure 4 As shown, Figure 4 This is a flowchart illustrating a BWP handover method according to an embodiment, which can be executed by a base station. The method may include the following steps:

[0238] In step 401, the first BWP to which the terminal is to be handed over on the serving cell is determined.

[0239] In this embodiment of the disclosure, the serving cell is any cell that can be scheduled by MC-DCI. It should be noted that although the serving cell can be scheduled by MC-DCI, the MC-DCI received by the terminal at a certain moment may not necessarily include the serving cell.

[0240] In this embodiment of the disclosure, BWP switching refers to switching a BWP that is in an active state. BWP switching includes, but is not limited to, downlink BWP switching and / or uplink BWP switching.

[0241] For example, the base station configures multiple downlink BWPs for the terminal, but only one downlink BWP can be active at any given time. The terminal uses a different downlink BWP than the one used in the previous period to perform data reception, which is called downlink BWP handover.

[0242] For example, the base station configures multiple uplink BWPs for the terminal, but only one uplink BWP can be active at any given time. The terminal uses a different uplink BWP than the one used in the previous period to send data, which is called uplink BWP handover.

[0243] In this embodiment of the disclosure, the first BWP refers to the BWP to which the terminal is to be switched, that is, the BWP to which the terminal is about to switch.

[0244] In one possible implementation, if the serving cell is not currently scheduled by MC-DCI, the base station can instruct the terminal to perform a BWP handover on the serving cell based on any of the following methods, and determine the first BWP to which the terminal should handover:

[0245] Method 1: Send an RRC indication message to the terminal, which instructs the terminal to perform a BWP handover on the serving cell.

[0246] Accordingly, the base station can configure the first BWP for the terminal, and further, the base station can indicate the first BWP through the RRC indication message.

[0247] Method 2: Send a legacy DCI to the terminal, which instructs the terminal to perform a BWP handover on the serving cell.

[0248] Accordingly, the base station can configure the first BWP for the terminal, and further, the base station can indicate the first BWP through legacy DCI.

[0249] For example, legacy DCI can be a DCI format defined based on version 15 (Release-15, Rel-15), version 16 (Release-16, Rel-16), and version 17 (Release-17, Rel-17). MC-DCI, introduced in Rel-18, is not within the scope of legacy DCI.

[0250] For example, the legacy DCI can instruct the terminal to perform a BWP handover on the serving cell through the included BWP field. For instance, setting the bit value of a preset bit in the BWP field to a preset bit value instructs the terminal to perform a BWP handover on the serving cell. Additionally, the BWP field included in the legacy DCI can also indicate the identifier of the first BWP. The preset bit value can be 1 or 0, and this disclosure does not limit this.

[0251] Method 3: Send a Physical Downlink Control Channel (PDCCH) for scheduling the serving cell to the terminal. The PDCCH is scrambled using a First Radio Network Temporary Identifier (RNTI).

[0252] In this embodiment of the disclosure, when the base station determines that there is data to be transmitted between it and the terminal, it sends the PDCCH to the terminal. Upon receiving the PDCCH, the terminal determines whether to start or restart the BWP timer. From the terminal's perspective, upon the BWP Timer expires, it determines to perform a BWP handover on the serving cell.

[0253] For example, the BWP Timer can be a bwp-InactivityTimer.

[0254] For example, the base station may determine the default BWP as the first BWP based on the indication of the BWP Timer on the terminal.

[0255] For example, the first RNTI includes, but is not limited to, at least one of the following: C-RNTI; CS-RNTI.

[0256] In another possible implementation, if the serving cell is currently scheduled by MC-DCI, the base station can instruct the terminal to perform a BWP handover on the serving cell based on any of the following methods, and determine the first BWP to which the terminal should handover:

[0257] Method 1: Send an RRC indication message to the terminal, which instructs the terminal to perform a BWP handover on the serving cell.

[0258] Accordingly, the base station can configure the first BWP for the terminal, and further, the base station can indicate the first BWP through the RRC indication message.

[0259] Method 2: Send a legacy DCI to the terminal, which instructs the terminal to perform a BWP handover on the serving cell.

[0260] Accordingly, the base station can configure the first BWP for the terminal, and further, the base station can indicate the first BWP through legacy DCI.

[0261] Method 3: Send MC-DCI to the terminal, and the MC-DCI instructs the terminal to perform BWP handover on the serving cell.

[0262] Accordingly, the base station can configure the first BWP for the terminal, and further, the base station can indicate the first BWP through the MC-DCI.

[0263] It should be noted that the serving cell at this time is one of the multiple cells scheduled by the MC-DCI. For example, cells #1, #2, #3 and #4 are all cells that can be scheduled by the MC-DCI. At time T2, the multiple cells scheduled by the MC-DCI received by the terminal include cells #1 and #2, and the serving cell where the terminal is located is cell #1.

[0264] For example, MC-DCI can schedule data transmission across multiple cells. Each cell's data transmission corresponds to one PDSCH and / or one PUSCH. MC-DCI can use DCI format 0_X or DCI format 1_X, where X is an integer value greater than or equal to 3, and this disclosure does not limit this.

[0265] For example, the MC-DCI can instruct the terminal to perform a BWP handover on the serving cell through the included preset information fields. For instance, setting the bit value of a preset bit in the preset information field to a preset bit value instructs the terminal to perform a BWP handover on the serving cell. The preset bit value can be 1 or 0, and this disclosure does not limit this. In addition, the preset information fields included in the MC-DCI can also indicate the identifier of the first BWP. The preset information fields can be agreed upon by the protocol and specifically used to indicate information related to BWP handover, or they can reuse existing information fields in the MC-DCI, and this disclosure does not limit this.

[0266] Method 4: Send a PDCCH for scheduling the serving cell to the terminal. The PDCCH is scrambled using the first Radio Network Temporary Identifier (RNTI).

[0267] In this embodiment of the disclosure, when the base station determines that there is data to be transmitted between it and the terminal, it sends the PDCCH to the terminal. Upon receiving the PDCCH, the terminal starts or restarts the BWP timer. From the terminal's perspective, upon the BWP Timer expires, it determines to perform a BWP handover on the serving cell.

[0268] For example, the BWP Timer can be a bwp-InactivityTimer.

[0269] For example, the base station may determine the default BWP as the first BWP based on the indication of the BWP Timer on the terminal.

[0270] For example, the first RNTI includes, but is not limited to, at least one of the following: C-RNTI; CS-RNTI; RNTI for scrambling the MC-DCI.

[0271] The RNTI used to scramble the MC-DCI can be represented as xx-RNTI (the specific character corresponding to "xx" can be defined by the protocol).

[0272] In step 402, data reception and / or transmission are performed on the first BWP with the terminal.

[0273] In this embodiment of the disclosure, after determining that the terminal has switched to the first BWP, the base station can receive and / or transmit data with the terminal on the first BWP.

[0274] In the above embodiments, the BWP handover mechanism is improved based on the introduction of MC-DCI, which is beneficial to improve the terminal data transmission performance and ensures that the base station and the terminal have consistent understanding and high availability.

[0275] In some alternative embodiments, refer to Figure 5 As shown, Figure 5 This is a flowchart illustrating a BWP handover method according to an embodiment, which can be executed by a base station. The method may include the following steps:

[0276] In step 501, in response to determining that the terminal receives the MC-DCI and legacy DCI in the time domain and that the MC-DCI and legacy DCI indicate different BWP states, it is determined whether the terminal performs a BWP handover on the serving cell.

[0277] In this embodiment of the disclosure, if the base station determines that the MC-DCI and legacy DCI received by the terminal overlap in the time domain, and the MC-DCI and legacy DCI indicate different BWP states, the base station may determine whether the terminal performs a BWP handover on the serving cell using any of the following methods. The different BWP states include at least one of the following: different states; wherein the states include performing a BWP handover or not performing a BWP handover; different first BWP identifiers.

[0278] Method 1: Based on the indication of MC-DCI or legacy DCI, determine whether the terminal is performing BWP handover on the serving cell.

[0279] In one possible implementation, it can be determined whether the terminal is performing a BWP handover on the serving cell based on the indication of the MC-DCI.

[0280] For example, if the state indicated by MC-DCI includes performing BWP handover, then the base station determines that the terminal is performing BWP handover on the serving cell.

[0281] For example, if the state indicated by MC-DCI includes not performing BWP handover, then the base station determines that the terminal does not perform BWP handover on the serving cell.

[0282] In another possible implementation, the terminal can determine whether to perform a BWP handover on the serving cell based on the indication from the legacy DCI.

[0283] For example, if the status indicated by the legacy DCI includes performing a BWP handover, then the base station determines that the terminal is performing a BWP handover on the serving cell.

[0284] For example, if the state indicated by the legacy DCI includes not performing a BWP handover, then the base station determines that the terminal does not perform a BWP handover on the serving cell.

[0285] Method 2: Determine that the terminal does not perform BWP handover on the serving cell.

[0286] In this embodiment of the disclosure, if the base station determines that the MC-DCI and legacy DCI received by the terminal overlap in the time domain, and the MC-DCI and legacy DCI indicate different BWP states, the base station directly determines that the terminal will not perform BWP handover on the serving cell.

[0287] Method 3: Based on the indication of a specific DCI, determine whether the terminal performs a BWP handover on the serving cell.

[0288] In one possible implementation, the base station can determine whether the terminal is performing a BWP handover on the serving cell based on the indication of a first DCI. The first DCI is the MC-DCI and the legacy DCI that indicates the need for a BWP handover.

[0289] For example, if the state indicated by the MC-DCI includes performing a BWP handover, and the state indicated by the legacy DCI includes not performing a BWP handover, then the MC-DCI is determined as the first DCI. Based on the indication of the MC-DCI, the base station determines that the terminal performs a BWP handover on the serving cell.

[0290] For example, if the state indicated by the MC-DCI includes performing no BWP handover, and the state indicated by the legacy DCI includes performing BWP handover, then the legacy DCI is determined as the first DCI, and the base station determines that the terminal performs BWP handover on the serving cell based on the indication of the legacy DCI.

[0291] In another possible implementation, the base station can determine that the terminal will not perform a BWP handover on the serving cell based on the indication of a second DCI. The second DCI is the MC-DCI and the legacy DCI that indicates that a BWP handover will not be performed.

[0292] For example, if the state indicated by the MC-DCI includes performing BWP handover, and the state indicated by the legacy DCI includes not performing BWP handover, then the legacy DCI is determined as the second DCI. Based on the indication of the legacy DCI, the base station determines that the terminal does not perform BWP handover on the serving cell.

[0293] For example, if the state indicated by the MC-DCI includes not performing BWP handover, and the state indicated by the legacy DCI includes performing BWP handover, then the MC-DCI is determined to be the second DCI. Based on the indication of the MC-DCI, the base station determines that the terminal will not perform BWP handover on the serving cell.

[0294] Method 4: Determine if the terminal performs the BWP handover.

[0295] In one possible implementation, if the MC-DCI and legacy DCI indicate the different states, then the base station determines that the terminal performs the BWP handover.

[0296] In another possible implementation, if both the MC-DCI and the legacy DCI indicate a state that includes performing a BWP handover, but the MC-DCI and the legacy DCI indicate different first BWP identifiers, then the base station determines that the terminal is performing the BWP handover.

[0297] In this embodiment of the disclosure, if it is determined in this step that the terminal will perform a BWP handover, the base station will continue to execute subsequent steps 502 and 503; if it is determined in this step that a BWP handover will not be performed, the terminal will end the current process.

[0298] In step 502, the first BWP to which the terminal is to be handed over on the serving cell is determined.

[0299] In this embodiment of the disclosure, the first BWP refers to the BWP to which the terminal is to be switched, that is, the BWP to which the terminal is about to switch.

[0300] In one possible implementation, in step 501, the base station determines, according to method one, that the terminal is performing a BWP handover on the serving cell based on the indication of the MC-DCI. Accordingly, the base station determines the first BWP based on the indication of the MC-DCI.

[0301] The method for determining the first BWP is similar to the method for determining the first BWP based on the indication of MC-DCI in the above embodiments, and will not be described again here.

[0302] After the base station determines the terminal to perform BWP handover in step 501 according to method one based on the indication of legacy DCI, the base station determines the first BWP accordingly based on the indication of legacy DCI.

[0303] The method for determining the first BWP is similar to the method for determining the first BWP based on the legacy DCI instruction in the above embodiments, and will not be described again here.

[0304] In another possible implementation, in step 301, the base station, according to method three, determines that the terminal is performing a BWP handover on the serving cell based on the indication of the first DCI. Accordingly, the base station determines the first BWP based on the indication of the first DCI. Here, the first DCI is the DCI in the MC-DCI and legacy DCI that indicates the performance of the BWP handover.

[0305] In one possible implementation, the base station determines in step 501, according to method four, that the terminal is performing a BWP handover on the serving cell. If the MC-DCI and the legacy DCI indicate different states, the base station can determine the first BWP based on the DCI indicating that a BWP handover is being performed.

[0306] For example, if the state indicated by the MC-DCI includes performing a BWP handover, and the state indicated by the legacy DCI includes not performing a BWP handover, then the base station determines the first BWP based on the indication of the MC-DCI.

[0307] For example, if the state indicated by the MC-DCI includes not performing BWP handover, and the state indicated by the legacy DCI includes performing BWP handover, then the base station determines the first BWP based on the indication of the legacy DCI.

[0308] Alternatively, if the MC-DCI and the legacy DCI indicate the execution of a BWP handover, but indicate different first BWP identifiers, the base station can determine the first BWP based on the indication of the MC-DCI.

[0309] Alternatively, the base station can determine the first BWP based on the indication of the legacy DCI.

[0310] Alternatively, the base station may determine the first BWP based on the BWP that is currently transmitting and / or receiving data.

[0311] The base station can configure or determine the mapping relationship between any two BWPs (the identifiers of any two BWPs can be the same or different) for the terminal, and determine the mapping BWP corresponding to the BWP that is sending and / or receiving data based on the mapping relationship, and determine the mapping BWP as the first BWP.

[0312] Of course, if the identifier of the mapped BWP is the same as the identifier of the BWP that is currently transmitting and / or receiving data, the base station determines that the terminal will not perform a BWP handover.

[0313] In step 503, data reception and / or transmission are performed on the first BWP with the terminal.

[0314] In this embodiment of the disclosure, after determining that the terminal has switched to the first BWP, the base station can receive and / or transmit data with the terminal on the first BWP.

[0315] In the above embodiments, if the base station determines that the terminal receives MC-DCI and legacy DCI in the time domain, and MC-DCI and legacy DCI indicate different BWP states, the base station determines whether the terminal should perform BWP handover. Thus, based on the introduction of MC-DCI, the purpose of improving the BWP handover mechanism is achieved, which is beneficial to improving the terminal data transmission performance and ensuring that the base station and the terminal have consistent understanding and high availability.

[0316] To facilitate understanding of the above solutions, the present disclosure provides the following embodiments.

[0317] Example 1: Assume the terminal is a Rel-18 or later version terminal, and the terminal receives MC-DCI. Based on the MC-DCI instruction, it receives PDSCH of multiple cells or sends PUSCH of multiple cells.

[0318] In a multi-carrier scheduling scenario, for cells that can be scheduled by MC-DCI, if the base station determines that only one or more of the scheduled cells have a need to switch the BWP where the data is transmitted, in order to save the corresponding DCI bit overhead, the terminal may expect to receive legacy DCI in the scheduled cell. The legacy DCI instructs the terminal to perform BWP handover.

[0319] For the one or more scheduled cells, the terminal performs BWP handover in the following manner:

[0320] Method 1: The terminal responds to the RRC indication message, instructing the terminal to perform a BWP handover on the serving cell, and confirms that a BWP handover is performed on the serving cell.

[0321] Method 2: The terminal responds to the legacy DCI instruction to perform a BWP handover on the serving cell, and determines that a BWP handover is to be performed on the serving cell.

[0322] Method 3: The terminal responds to the BWP timer timeout by determining to perform a BWP handover on the serving cell.

[0323] It should be noted that, in response to receiving the PDCCH of the serving cell, the terminal determines whether the BWP timer should start or restart. This PDCCH is scrambled using a first RNTI.

[0324] For example, the first RNTI includes, but is not limited to, at least one of the following: C-RNTI; CS-RNTI.

[0325] For BWP handover triggered by BWP Timer, after the introduction of MC-DCI, if the terminal receives MC-DCI in addition to receiving legacy DCI (e.g., PDCCH scrambled via C-RNTI or CS-RNTI), the corresponding BWPTimer should also restart timing. MC-DCI can be represented as xx-RNTI.

[0326] Example 2, as described above, assumes that the terminal is a Rel-18 or later version terminal, and the terminal receives MC-DCI, and based on the MC-DCI instruction, receives PDSCH of multiple cells or sends PUSCH of multiple cells.

[0327] If the MC-DCI contains a BWP indicator field for indicating BWP handover, the terminal does not expect the MC-DCI indicating BWP handover to be transmitted on symbols other than the first three symbols of any slot.

[0328] For a specific scheduled cell, it may be subject to joint scheduling by legacy DCI and MC-DCI, resulting in a situation where the terminal receives both types of DCI simultaneously, and the two types of DCI indicate different BWP states. The above situation can be handled in the following way:

[0329] Method 1: If the MC DCI and legacy DCI indicate different BWP states for the same scheduling cell, including but not limited to indicating different states and / or indicating different first BWP identifiers, the terminal does not expect the time domain range of receiving the MC-DCI to overlap with the time domain range of receiving the legacy DCI.

[0330] Method 2: Determine whether to perform BWP switching based on predefined methods:

[0331] 1) Based on the indication of legacy DCI, the terminal determines whether to perform BWP handover and determines the first BWP. Accordingly, the terminal can ignore the indication of MC-DCI related fields. Here, related fields refer to fields related to BWP handover.

[0332] 2) Based on the indication of MC-DCI, determine whether to perform BWP handover and determine the first BWP. Accordingly, the terminal can ignore the indication of legacy DCI related fields, where related fields refer to fields related to BWP handover.

[0333] 3) Ignore the instructions of the relevant fields. The terminal ignores the instructions of the fields related to legacy DCI and MC-DCI and BWP handover, and the terminal abandons the BWP handover.

[0334] 4) If the reception time domain ranges of legacy DCI and MC-DCI overlap, for a specific scheduled cell, legacy DCI and MC DCI indicate different BWP states. For example, the state indicated by legacy DCI may include not performing BWP handover, while the state indicated by MC-DCI may include performing BWP handover. The terminal can choose not to resolve the relevant fields of MC-DCI, that is, the terminal determines not to perform BWP handover according to the indication of the second DCI. Here, the second DCI is legacy DCI.

[0335] Alternatively, the terminal determines to perform a BWP handover according to the instructions of the first DCI, and determines the first BWP according to the instructions of the first DCI, where the first DCI is MC-DCI.

[0336] Alternatively, the terminal may abandon the resolution of legacy DCI and MC-DCI related fields, meaning the terminal does not perform BWP handover.

[0337] 5) If the reception time domain ranges of legacy DCI and MC-DCI overlap, for a specific scheduled cell, legacy DCI and MC DCI indicate different BWP states. For example, the state indicated by legacy DCI includes not performing BWP handover, while the state indicated by MC-DCI includes performing BWP handover, or the states indicated by legacy DCI and MC-DCI include performing BWP handover, but they indicate different first BWPs. In this case, the terminal determines to perform BWP handover.

[0338] Accordingly, the legacy DCI indication states include not performing BWP handover, while the MC-DCI indication states include performing BWP handover, and the terminal determines the first BWP based on the MC-DCI indication.

[0339] When the states indicated by legacy DCI and MC-DCI include performing BWP handover, but the two indicate different first BWPs, the terminal can determine the first BWP based on the indication of MC-DCI or legacy DCI. Alternatively, the terminal can also determine the first BWP based on the BWP currently transmitting and / or receiving data. This disclosure does not limit the specific implementation method.

[0340] In the above embodiments, the introduction of MC-DCI improves the BWP handover mechanism, which is beneficial to improving terminal data transmission performance and ensuring consistent understanding between the base station and the terminal, resulting in high availability.

[0341] Corresponding to the aforementioned embodiments of the application function implementation method, this disclosure also provides embodiments of the application function implementation apparatus.

[0342] Reference Figure 6 , Figure 6 This is a block diagram of a BWP handover device according to an exemplary embodiment, the device being applied to a terminal, comprising:

[0343] The first determining module 601 is configured to determine the first BWP to be handed over to in response to determining that a BWP handover will be performed on the serving cell; wherein the serving cell is any cell that can be scheduled by multi-cell downlink control information (MC-DCI).

[0344] The handover module 602 is configured to switch to the first BWP on the serving cell and perform data transmission and / or reception on the first BWP.

[0345] Optionally, the first determining module includes at least one of the following:

[0346] The first determining submodule is configured to determine that a BWP handover is to be performed in response to a Radio Resource Control (RRC) indication message instructing the terminal to perform a BWP handover on the serving cell.

[0347] The second determining submodule is configured to determine that a BWP handover is performed on the serving cell in response to a legacy DCI instruction to the terminal to perform a BWP handover on the serving cell.

[0348] The third determining submodule is configured to determine, in response to the MC-DCI instructing the terminal to perform a BWP handover on the serving cell, to perform a BWP handover on the serving cell; wherein the serving cell is one of a plurality of cells scheduled by the MC-DCI;

[0349] The fourth determination submodule is configured to determine, in response to a BWP timer timeout, to perform a BWP handover on the serving cell.

[0350] Optionally, the device further includes:

[0351] The third determining module is configured to determine whether the BWP timer should start or restart in response to receiving the Physical Downlink Control Channel (PDCCH) of the serving cell; wherein the PDCCH is scrambled by the First Radio Network Temporary Identifier (RNTI).

[0352] Optionally, the first RNTI includes at least one of the following:

[0353] Temporary Identifier for Cellular Wireless Network (C-RNTI)

[0354] Configure the temporary identifier CS-RNTI for the wireless network;

[0355] RNTI used to scramble the MC-DCI.

[0356] Optionally, the first determining module includes at least one of the following:

[0357] The fifth determining submodule is configured to determine the first BWP based on the RRC indication message;

[0358] The sixth determining submodule is configured to determine the first BWP based on the indication of the legacy DCI;

[0359] The seventh determining submodule is configured to determine the first BWP based on the indication of the MC-DCI;

[0360] The eighth determining submodule is configured to determine the first BWP based on the indication of the BWP Timer.

[0361] Optionally, the device further includes:

[0362] The processing module is configured to not expect the received MC-DCI and legacy DCI to indicate different BWP states if the received MC-DCI and legacy DCI overlap in the time domain.

[0363] Optionally, the device further includes:

[0364] The fourth determining module is configured to determine whether to perform a BWP handover on the serving cell in response to receiving that the MC-DCI and legacy DCI overlap in the time domain and that the MC-DCI and legacy DCI indicate different BWP states.

[0365] Optionally, the different BWP states include at least one of the following:

[0366] Different states; wherein, the states include performing BWP switching or not performing BWP switching;

[0367] Different first BWP identifiers.

[0368] Optionally, the fourth determining module includes:

[0369] The ninth determining submodule is configured to determine, based on the indication of the MC-DCI, whether to perform a BWP handover on the serving cell.

[0370] Optionally, the first determining module includes:

[0371] The tenth determining submodule is configured to determine the first BWP based on the indication of the MC-DCI.

[0372] Optionally, the fourth determining module includes:

[0373] The eleventh determination submodule is configured to determine, based on the indication of the legacy DCI, whether to perform a BWP handover on the serving cell.

[0374] Optionally, the first determining module includes:

[0375] The twelfth determination submodule is configured to determine the first BWP based on the indication of the legacy DCI.

[0376] Optionally, the fourth determining module includes:

[0377] The thirteenth determination submodule is configured to determine that no BWP handover should be performed on the serving cell.

[0378] Optionally, the fourth determining module includes:

[0379] The fourteenth determining submodule is configured to determine, based on the indication of the first DCI, to perform a BWP handover on the serving cell; wherein, the first DCI is the MC-DCI and the legacy DCI that indicate the performance of the BWP handover; or...

[0380] The fifteenth determining submodule is configured to determine, based on the indication of the second DCI, not to perform BWP handover on the serving cell; wherein the second DCI is the DCI that indicates not to perform BWP handover between the MC-DCI and the legacy DCI.

[0381] Optionally, the first determining module includes:

[0382] The sixteenth determining submodule is configured to determine the first BWP based on the indication of the first DCI.

[0383] Optionally, the device further includes:

[0384] The fifth determining module is configured to determine to perform the BWP switch if the MC-DCI and legacy DCI indicate the different states.

[0385] Optionally, the first determining module includes:

[0386] The seventeenth determining submodule is configured to determine the first BWP based on the MC-DCI indication if the MC-DCI indicates a BWP handover; or,

[0387] The eighteenth determining submodule is configured to determine the first BWP based on the indication of the legacy DCI if the legacy DCI indicates that a BWP switch should be performed.

[0388] Optionally, the device further includes:

[0389] The sixth determining module is configured to determine to perform the BWP switch if the MC-DCI and the legacy DCI indicate that a BWP switch should be performed, but the first BWP identifier is different.

[0390] Optionally, the first determining module includes any one of the following:

[0391] The nineteenth determining submodule is configured to determine the first BWP based on the indication of the MC-DCI;

[0392] The twentieth determining submodule is configured to determine the first BWP based on the indication of the legacy DCI;

[0393] The twenty-first determination submodule is configured to determine the first BWP based on the BWP that is currently sending and / or receiving data.

[0394] Reference Figure 7 , Figure 7 This is a block diagram of a BWP handover device according to an exemplary embodiment, the device being applied to a base station, comprising:

[0395] The second determining module 701 is configured to determine the first BWP to which the terminal is to be handed over on the serving cell; wherein, the serving cell is any cell that can be scheduled by multi-cell downlink control information (MC-DCI);

[0396] The execution module 702 is configured to receive and / or send data with the terminal on the first BWP.

[0397] Optionally, the device further includes at least one of the following:

[0398] The first transmitting module is configured to send a Radio Resource Control (RRC) indication message to the terminal, and the RRC indication message instructs the terminal to perform a BWP handover on the serving cell.

[0399] The second sending module is configured to send a legacy DCI to the terminal, and the legacy DCI instructs the terminal to perform a BWP handover on the serving cell;

[0400] The third sending module is configured to send the MC-DCI to the terminal, and the MC-DCI instructs the terminal to perform a BWP handover on the serving cell.

[0401] Optionally, the device further includes at least one of the following:

[0402] The first indication module is configured to indicate the first BWP via the RRC indication message;

[0403] The second instruction module is configured to instruct the first BWP via the legacy DCI;

[0404] The third instruction module is configured to instruct the first BWP via the MC-DCI.

[0405] Optionally, the device further includes:

[0406] The fourth transmitting module is configured to transmit a Physical Downlink Control Channel (PDCCH) for scheduling the serving cell to the terminal; wherein the PDCCH is scrambled by a first Radio Network Temporary Identifier (RNTI).

[0407] Optionally, the first RNTI includes at least one of the following:

[0408] Temporary Identifier for Cellular Wireless Network (C-RNTI)

[0409] Configure the temporary identifier CS-RNTI for the wireless network;

[0410] RNTI used to scramble the MC-DCI.

[0411] Optionally, the second determining module includes:

[0412] The 22nd determining submodule is configured to determine the first BWP based on an indication from the BWP Timer on the terminal.

[0413] Optionally, the device further includes:

[0414] The seventh determining module is configured to determine whether the terminal performs a BWP handover on the serving cell in response to determining that the MC-DCI and legacy DCI received by the terminal overlap in the time domain and that the MC-DCI and legacy DCI indicate different BWP states.

[0415] Optionally, the different BWP states include at least one of the following:

[0416] Different states; wherein the states include performing a BWP switch or not performing a BWP switch;

[0417] Different first BWP identifiers.

[0418] Optionally, the seventh determining module includes:

[0419] The twenty-third determining submodule is configured to determine, based on the indication of the MC-DCI, whether the terminal decides to perform a BWP handover on the serving cell.

[0420] Optionally, the second determining module includes:

[0421] The twenty-fourth determining submodule is configured to determine the first BWP based on the indication of the MC-DCI.

[0422] Optionally, the fourth determining module includes:

[0423] The 25th determination submodule is configured to determine, based on the indication of the legacy DCI, whether the terminal decides to perform a BWP handover on the serving cell.

[0424] Optionally, the second determining module includes:

[0425] The 26th determination submodule is configured to determine the first BWP based on the indication of the legacy DCI.

[0426] Optionally, the fourth determining module includes:

[0427] The twenty-seventh determination submodule is configured to determine that the terminal does not perform BWP handover on the serving cell.

[0428] Optionally, the fourth determining module includes:

[0429] The twenty-eighth determining submodule is configured to determine, based on the indication of the first DCI, that the terminal performs a BWP handover on the serving cell; wherein, the first DCI is the DCI that indicates the performance of a BWP handover between the MC-DCI and the legacy DCI; or...

[0430] The 29th determining submodule is configured to determine, based on the indication of the second DCI, that the terminal will not perform a BWP handover on the serving cell; wherein, the second DCI is the DCI that indicates not to perform a BWP handover between the MC-DCI and the legacy DCI.

[0431] Optionally, the second determining module includes:

[0432] The thirtieth determining submodule is configured to determine the first BWP based on the indication of the first DCI.

[0433] Optionally, the device further includes:

[0434] The eighth determining module is configured to determine that the terminal performs the BWP handover on the serving cell if the MC-DCI and legacy DCI indicate the different states.

[0435] Optionally, the second determining module includes:

[0436] The thirty-first determining submodule is configured to, if the MC-DCI indicates that a BWP handover should be performed, determine the first BWP based on the MC-DCI indication; or,

[0437] The 32nd determination submodule is configured to determine the first BWP based on the indication of the legacy DCI if the legacy DCI indicates that a BWP switch should be performed.

[0438] Optionally, the device further includes:

[0439] The ninth determining module is configured to determine that the terminal is performing the BWP handover on the serving cell if the MC-DCI and the legacy DCI indicate that a BWP handover is to be performed, but indicate different first BWP identifiers.

[0440] Optionally, the second determining module includes:

[0441] The thirty-third determining submodule is configured to determine the first BWP based on the indication of the MC-DCI;

[0442] The thirty-fourth determining submodule is configured to determine the first BWP based on the indication of the legacy DCI;

[0443] The 35th determination submodule is configured to determine the first BWP based on the BWP that is currently transmitting and / or receiving data.

[0444] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this disclosure according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0445] Accordingly, this disclosure also provides a computer-readable storage medium storing a computer program for executing any of the BWP handover methods described above for the terminal side.

[0446] Accordingly, this disclosure also provides a computer-readable storage medium storing a computer program for executing any of the BWP handover methods described above for the base station side.

[0447] Accordingly, this disclosure also provides a BWP switching device, comprising:

[0448] processor;

[0449] Memory used to store processor-executable instructions;

[0450] The processor is configured to execute any of the BWP handover methods described above on the terminal side.

[0451] Figure 8This is a block diagram illustrating a BWP switching device 800 according to an exemplary embodiment. For example, device 800 can be a mobile phone, tablet computer, e-book reader, multimedia playback device, wearable device, in-vehicle user equipment, iPad, smart TV, and other terminals.

[0452] Reference Figure 8 The device 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 816, and a communication component 818.

[0453] Processing component 802 typically controls the overall operation of device 800, such as operations associated with display, telephone calls, random data access, camera operation, and recording operations. Processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the BWP switching method described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802. Alternatively, processing component 802 may read executable instructions from memory to implement the steps of a BWP switching method provided in the above embodiments.

[0454] Memory 804 is configured to store various types of data to support the operation of device 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0455] Power supply component 806 provides power to various components of device 800. Power supply component 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to device 800.

[0456] The multimedia component 808 includes a display screen that provides an output interface between the device 800 and the user. In some embodiments, the multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera can receive external multimedia data. Each front-facing camera and rear-facing camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0457] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when device 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 818. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0458] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0459] Sensor assembly 816 includes one or more sensors for providing status assessments of various aspects of device 800. For example, sensor assembly 816 may detect the on / off state of device 800, the relative positioning of components such as the display and keypad of device 800, changes in the position of device 800 or a component of device 800, the presence or absence of user contact with device 800, the orientation or acceleration / deceleration of device 800, and temperature changes of device 800. Sensor assembly 816 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 816 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 816 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0460] Communication component 818 is configured to facilitate wired or wireless communication between device 800 and other devices. Device 800 can access wireless networks based on communication standards, such as Wi-Fi, 2G, 3G, 4G, 5G, or 6G, or combinations thereof. In one exemplary embodiment, communication component 818 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 818 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0461] In an exemplary embodiment, the device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform any of the BWP switching methods described above on the terminal side.

[0462] In an exemplary embodiment, a non-transitory machine-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by a processor 820 of the device 800 to complete the BWP switching method described above. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0463] Accordingly, this disclosure also provides a BWP switching device, comprising:

[0464] processor;

[0465] Memory used to store processor-executable instructions;

[0466] The processor is configured to execute any of the BWP handover methods described above on the base station side.

[0467] like Figure 9 As shown, Figure 9 This is a schematic diagram illustrating the structure of a BWP handover device 900 according to an exemplary embodiment. The device 900 can be provided as a base station. (Refer to...) Figure 9 The device 900 includes a processing component 922, a wireless transmitting / receiving component 924, an antenna component 926, and a signal processing section specific to the wireless interface. The processing component 922 may further include at least one processor.

[0468] One of the processors in the processing component 922 can be configured to perform any of the BWP switching methods described above.

[0469] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0470] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A partial bandwidth BWP switching method, characterized in that, The method is performed by a terminal and comprises: in response to determining to perform BWP switching on a serving cell, determining a first BWP to switch to; wherein the serving cell is any one cell that can be scheduled by a multi-cell downlink control information (MC-DCI); switching to the first BWP on the serving cell, and performing data sending and / or receiving on the first BWP; the method further comprises: in response to receiving the MC-DCI and a legacy DCI overlapping in time domain, and the MC-DCI and the legacy DCI indicating different BWP states, determining whether to perform BWP switching on the serving cell.

2. The method of claim 1, wherein, The determination to perform BWP switching on a serving cell comprises at least one of: in response to a radio resource control (RRC) indication message indicating the terminal to perform BWP switching on the serving cell, determining to perform BWP switching on the serving cell; in response to a legacy DCI indicating the terminal to perform BWP switching on the serving cell, determining to perform BWP switching on the serving cell; in response to the MC-DCI indicating the terminal to perform BWP switching on the serving cell, determining to perform BWP switching on the serving cell; wherein the serving cell is one of a plurality of cells scheduled by the MC-DCI; in response to a BWP timer expiring, determining to perform BWP switching on the serving cell.

3. The method of claim 2, wherein, The method further comprises: in response to receiving a physical downlink control channel (PDCCH) scheduling the serving cell, determining the BWP timer to start timing or restart timing; wherein the PDCCH is scrambled by a first radio network temporary identifier (RNTI).

4. The method of claim 3, wherein, The first RNTI comprises at least one of: a cell radio network temporary identifier (C-RNTI); a configured scheduling radio network temporary identifier (CS-RNTI); an RNTI used to scramble the MC-DCI.

5. The method of claim 2, wherein, The determination of the first BWP to switch to comprises at least one of: determining the first BWP based on the RRC indication message; determining the first BWP based on an indication of the legacy DCI; determining the first BWP based on an indication of the MC-DCI; determining the first BWP based on an indication of the BWP timer.

6. The method of claim 1, wherein, The method further comprises: if the MC-DCI and the legacy DCI overlap in time domain, it is not expected that the received MC-DCI and the legacy DCI indicate different BWP states.

7. The method of claim 1, wherein, The different BWP states comprise at least one of: different states; wherein the states comprise performing BWP switching or not performing BWP switching; different first BWP identifiers.

8. The method of claim 1, wherein, The determination of whether to perform BWP switching on the serving cell comprises: determining whether to perform BWP switching on the serving cell based on an indication of the MC-DCI.

9. The method of claim 8, wherein, The determination of the first BWP to switch to comprises: determining the first BWP based on an indication of the MC-DCI.

10. The method of claim 1, wherein, The determining whether to perform the BWP switching on the serving cell comprises: determining whether to perform the BWP switching on the serving cell based on the indication of the legacy DCI.

11. The method of claim 10, wherein, The determining the first BWP to be switched to comprises: determining the first BWP based on the indication of the legacy DCI.

12. The method of claim 1, wherein, The determining whether to perform the BWP switching on the serving cell comprises: determining not to perform the BWP switching on the serving cell.

13. The method of claim 1, wherein, The determining whether to perform the BWP switching on the serving cell comprises: determining to perform the BWP switching on the serving cell based on the indication of the first DCI; wherein the first DCI is a DCI of the MC-DCI and the legacy DCI indicating to perform the BWP switching; or determining not to perform the BWP switching on the serving cell based on the indication of the second DCI; wherein the second DCI is a DCI of the MC-DCI and the legacy DCI indicating not to perform the BWP switching.

14. The method of claim 13, wherein, The determining the first BWP to be switched to comprises: determining the first BWP based on the indication of the first DCI.

15. The method of claim 7, wherein, The method further comprises: if the MC-DCI and the legacy DCI indicate the different states, determining to perform the BWP switching.

16. The method of claim 15, wherein, The determining the first BWP to be switched to comprises: if the MC-DCI indicates to perform the BWP switching, determining the first BWP based on the indication of the MC-DCI; or if the legacy DCI indicates to perform the BWP switching, determining the first BWP based on the indication of the legacy DCI.

17. The method of claim 7, wherein, The method further comprises: if the MC-DCI and the legacy DCI indicate to perform the BWP switching but indicate different first BWP identifications, determining to perform the BWP switching.

18. The method of claim 17, wherein, The determining the first BWP to be switched to comprises any of: determining the first BWP based on the indication of the MC-DCI; determining the first BWP based on the indication of the legacy DCI; determining the first BWP based on the BWP on which data is being transmitted and / or received.

19. A partial bandwidth (BWP) switching method, comprising: The method is performed by a base station and comprises: determining a first BWP to which a terminal is to be switched on a serving cell; wherein the serving cell is any one cell that can be scheduled by a multi-cell downlink control information (MC-DCI); performing data reception and / or transmission with the terminal on the first BWP; The method further comprises: in response to determining that the terminal receives the MC-DCI and the legacy DCI overlap in time domain and the MC-DCI and the legacy DCI indicate different BWP states, determining whether the terminal performs BWP switching on the serving cell.

20. The method of claim 19, wherein, The method further comprises at least one of: sending a radio resource control (RRC) indication message to the terminal, and the RRC indication message indicating the terminal to perform BWP switching on the serving cell; sending, to the terminal, a legacy DCI, and the legacy DCI indicates the terminal to perform BWP switching on the serving cell; sending, to the terminal, the MC-DCI, and the MC-DCI indicates the terminal to perform BWP switching on the serving cell.

21. The method of claim 20, wherein, The method further comprises at least one of: indicating the first BWP by the RRC indication message; indicating the first BWP by the legacy DCI; indicating the first BWP by the MC-DCI.

22. The method of claim 19, wherein, The method further comprises: sending, to the terminal, a physical downlink control channel (PDCCH) for scheduling the serving cell; wherein the PDCCH is scrambled by a first radio network temporary identifier (RNTI).

23. The method of claim 22, wherein, The first RNTI comprises at least one of: a cell radio network temporary identifier (C-RNTI); a configured scheduling radio network temporary identifier (CS-RNTI); an RNTI for scrambling the MC-DCI.

24. The method of claim 22, wherein, The determining the first BWP to which the terminal is to be switched on the serving cell comprises: determining the first BWP based on an indication of a BWP timer on the terminal.

25. The method of claim 19, wherein, The different BWP states comprise at least one of: different states; wherein the states comprise performing BWP switching or not performing BWP switching; different first BWP identifiers.

26. The method of claim 19, wherein, The determining whether the terminal is to perform BWP switching on the serving cell comprises: determining, based on an indication of the MC-DCI, whether the terminal is to perform BWP switching on the serving cell.

27. The method of claim 26, wherein, The determining the first BWP to which the terminal is to be switched on the serving cell comprises: determining the first BWP based on an indication of the MC-DCI.

28. The method of claim 19, wherein, The determining whether the terminal is to perform BWP switching on the serving cell comprises: determining, based on an indication of the legacy DCI, whether the terminal is to perform BWP switching on the serving cell.

29. The method of claim 28, wherein, The determining the first BWP to which the terminal is to be switched on the serving cell comprises: determining the first BWP based on an indication of the legacy DCI.

30. The method of claim 19, wherein, The determining whether the terminal is to perform BWP switching on the serving cell comprises: determining that the terminal is not to perform BWP switching on the serving cell.

31. The method of claim 19, wherein, The determining whether the terminal is to perform BWP switching on the serving cell comprises: determining, based on an indication of a first DCI, that the terminal is to perform BWP switching on the serving cell; wherein the first DCI is a DCI of the MC-DCI and the legacy DCI that indicates performing BWP switching; or determining, based on an indication of a second DCI, that the terminal is not to perform BWP switching on the serving cell; wherein the second DCI is a DCI of the MC-DCI and the legacy DCI that indicates not performing BWP switching.

32. The method of claim 31, wherein, The determining the first BWP to which the terminal is to be switched on the serving cell comprises: determining the first BWP based on an indication of the first DCI.

33. The method of claim 25, wherein, The method further comprises: If the MC-DCI and the legacy DCI indicate different states, it is determined that the terminal performs the BWP switching on the serving cell.

34. The method of claim 33, wherein, The determining of the first BWP to which the terminal is to be switched on the serving cell comprises: If the MC-DCI indicates to perform BWP switching, the first BWP is determined based on the indication of the MC-DCI; or, If the legacy DCI indicates to perform BWP switching, the first BWP is determined based on the indication of the legacy DCI.

35. The method of claim 25, wherein, The method further comprises: If the MC-DCI and the legacy DCI indicate to perform BWP switching but indicate different first BWP identifications, it is determined that the terminal performs the BWP switching on the serving cell.

36. The method of claim 35, wherein, The determining of the first BWP to which the terminal is to be switched on the serving cell comprises: The first BWP is determined based on the indication of the MC-DCI; The first BWP is determined based on the indication of the legacy DCI; The first BWP is determined based on the BWP on which data is being transmitted and / or received.

37. A partial bandwidth BWP switching device, characterized in that, The apparatus applied to a terminal comprises: A first determining module configured to, in response to determining to perform BWP switching on a serving cell, determine a first BWP to which to be switched; wherein the serving cell is any one cell that can be scheduled by multi-cell downlink control information (MC-DCI); A switching module configured to switch to the first BWP on the serving cell and perform data transmission and / or reception on the first BWP; The first determining module is further configured to: In response to receiving that the MC-DCI and the legacy DCI overlap in time domain and the MC-DCI and the legacy DCI indicate different BWP states, determine whether to perform BWP switching on the serving cell.

38. A partial bandwidth BWP switching device, characterized in that, The apparatus applied to a base station comprises: A second determining module configured to determine a first BWP to which a terminal is to be switched on a serving cell; wherein the serving cell is any one cell that can be scheduled by multi-cell downlink control information (MC-DCI); An executing module configured to perform data reception and / or transmission with the terminal on the first BWP; The second determining module is further configured to: In response to determining that the terminal receives that the MC-DCI and the legacy DCI overlap in time domain and the MC-DCI and the legacy DCI indicate different BWP states, determine whether the terminal performs BWP switching on the serving cell.

39. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for performing the partial bandwidth (BWP) switching method of any one of claims 1-18.

40. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for performing the partial bandwidth (BWP) switching method of any one of claims 19-36.

41. A partial bandwidth BWP switching device, characterized in that, Comprise: A processor; A memory for storing processor-executable instructions; A memory for storing processor-executable instructions; The processor is configured to perform the partial bandwidth BWP switching method in any one of claims 1-18.

42. A partial bandwidth BWP switching device, characterized in that, Comprise: a processor; a memory for storing processor-executable instructions; The processor is configured to perform the partial bandwidth BWP switching method in any one of claims 19-36.

Images