Information Transmission Method, Apparatus, Communication Device, and Storage Medium

Abstract

Embodiments of the present disclosure relate to an information transmission method, apparatus, communication device, and storage medium. A base station sends a cell handover command to a first type of user equipment (UE), where the cell handover command carries BWP configuration information indicating a bandwidth part (BWP) of a target cell, and the BWP of the target cell is determined based on the type of the first type of UE.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, but is not limited to wireless communication technologies, and in particular, to an information transmission method, apparatus, communication device, and storage medium. Background Art

[0002] In the current 3GPP standardization, a new type of terminal called Reduced-capability User Equipment (Reducedcapability UE), abbreviated as NR-lite or Redcap terminal, is proposed. This type of device is similar to the Internet of Things devices in Long-Term Evolution (LTE). Generally, NR-lite based on 5G needs to meet the following requirements:

[0003] - Low cost and low complexity

[0004] - A certain degree of coverage enhancement

[0005] - Power saving

[0006] - Some terminals are 1RX (one receiving antenna), and some are 2RX (two receiving antennas). Summary of the Invention

[0007] In view of this, embodiments of the present disclosure provide an information transmission method, apparatus, communication device, and storage medium.

[0008] According to a first aspect of the embodiments of the present disclosure, an information transmission method is provided. The method is executed by a base station, and the method includes:

[0009] Sending a cell handover command to a first type of user equipment UE, where the cell handover command carries BWP configuration information indicating a bandwidth part BWP of a target cell, and the BWP of the target cell is determined based on the type of the first type of UE.

[0010] In one embodiment, the BWP corresponding to the first type of UE indicated by the BWP configuration information includes at least one of the following:

[0011] The first activated downlink BWP;

[0012] The first activated uplink BWP;

[0013] The first downlink initial BWP;

[0014] The first uplink initial BWP.

[0015] In one embodiment,

[0016] There is no synchronization signal block SSB in the first activated downlink BWP;

[0017] Alternatively,

[0018] There is an SSB within the first activated downlink BWP.

[0019] In one embodiment, in response to determining that the first type of UE has a predetermined capability, there is a non-cell-defined synchronization signal block (NCD-SSB) within the first activated downlink BWP indicated by the BWP configuration information.

[0020] In one embodiment,

[0021] There is no SSB within the first downlink initial BWP;

[0022] Alternatively,

[0023] There is an SSB within the first downlink initial BWP.

[0024] In one embodiment, in response to determining that the first type of UE has a predetermined capability, there is an NCD-SSB within the first downlink initial BWP indicated by the BWP configuration information.

[0025] In one embodiment, the method further includes at least one of the following:

[0026] In response to the target cell being configured with a second downlink initial BWP for the first type of UE, determining the second downlink initial BWP as the first downlink initial BWP;

[0027] In response to the target cell being configured with a third downlink initial BWP for a second type of UE, and the bandwidth of the third downlink initial BWP being less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, determining the third downlink initial BWP as the first downlink initial BWP;

[0028] In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being greater than the bandwidth of the downlink BWP supported by the first type of UE, determining the fourth downlink initial BWP configured in the corresponding master information block (MIB) of the target cell as the first downlink initial BWP;

[0029] In response to the target cell not being configured with a third downlink initial BWP for the second type of UE, determining the fifth downlink initial BWP configured in the corresponding MIB of the target cell as the first downlink initial BWP.

[0030] In one embodiment, the method further includes at least one of the following:

[0031] In response to the target cell being configured with a second uplink initial BWP for the first type of UE, determine the second uplink initial BWP as the first uplink initial BWP;

[0032] In response to the target cell being configured with a third uplink initial BWP for the second type of UE, and the bandwidth of the third uplink initial BWP being less than or equal to the bandwidth of the uplink BWP supported by the first type of UE, determine the third uplink initial BWP as the first uplink initial BWP.

[0033] According to a second aspect of the embodiments of the present disclosure, there is provided an information transmission method, which is executed by a first type of user equipment (UE). Wherein, the method includes:

[0034] Receive a cell handover command from a base station, where the cell handover command carries BWP configuration information indicating a bandwidth part (BWP) corresponding to the first type of UE in the target cell, and the BWP of the target cell is determined by the base station based on the type of the first type of UE.

[0035] In one embodiment, the BWP corresponding to the first type of UE includes at least one of the following:

[0036] The first activated downlink BWP;

[0037] The first activated uplink BWP;

[0038] The first downlink initial BWP;

[0039] The first uplink initial BWP.

[0040] In one embodiment, there is no synchronization signal block (SSB) in the first activated downlink BWP;

[0041] Or,

[0042] There is an SSB in the first activated downlink BWP.

[0043] In one embodiment, the method further includes:

[0044] In response to there being no SSB in the first activated downlink BWP, perform synchronization and / or radio signal measurement through the downlink initial BWP having an SSB in the target cell.

[0045] In one embodiment, there is no SSB in the first downlink initial BWP;

[0046] Or,

[0047] There is an SSB in the first downlink initial BWP.

[0048] In one embodiment, the method further includes:

[0049] In response to the absence of an SSB in the first downlink initial BWP, perform synchronization and / or radio signal measurement through a downlink initial BWP having an SSB in the target cell.

[0050] In one embodiment, the method further includes:

[0051] Send indication information to the base station indicating whether the first type of user equipment UE has a predetermined capability, where the predetermined capability is used for the base station to determine whether to indicate to the first type of user equipment UE the first activated downlink BWP having a non-cell-defined synchronization signal block NCD-SSB and / or the first downlink initial BWP having an NCD-SSB.

[0052] According to a third aspect of the embodiments of the present disclosure, there is provided an information transmission device, where the device includes:

[0053] A first transceiver module configured to send a cell handover command to a first type of user equipment UE, where the cell handover command carries BWP configuration information indicating a bandwidth part BWP of a target cell, and the BWP of the target cell is determined based on the type of the first type of UE.

[0054] In one embodiment, the BWP corresponding to the first type of UE indicated by the BWP configuration information includes at least one of the following:

[0055] The first activated downlink BWP;

[0056] The first activated uplink BWP;

[0057] The first downlink initial BWP;

[0058] The first uplink initial BWP.

[0059] In one embodiment, there is no synchronization signal block SSB in the first activated downlink BWP;

[0060] Or,

[0061] There is an SSB in the first activated downlink BWP.

[0062] In one embodiment, in response to determining that the first type of UE has a predetermined capability, there is a non-cell-defined synchronization signal block NCD-SSB in the first activated downlink BWP indicated by the BWP configuration information.

[0063] In one embodiment, there is no SSB in the first downlink initial BWP;

[0064] Or,

[0065] There is an SSB within the first downlink initial BWP.

[0066] In one embodiment, in response to determining that the first type of UE has a predetermined capability, there is a non-cell-defined synchronization signal block NCD-SSB within the first downlink initial BWP indicated by the BWP configuration information.

[0067] In one embodiment, the device further includes a first processing module configured to perform at least one of the following:

[0068] In response to the target cell being configured with a second downlink initial BWP for the first type of UE, determine the second downlink initial BWP as the first downlink initial BWP;

[0069] In response to the target cell being configured with a third downlink initial BWP for a second type of UE, and the bandwidth of the third downlink initial BWP being less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, determine the third downlink initial BWP as the first downlink initial BWP;

[0070] In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being greater than the bandwidth of the downlink BWP supported by the first type of UE, determine the fourth downlink initial BWP configured in the corresponding MIB of the target cell as the first downlink initial BWP;

[0071] In response to the target cell not being configured with a third downlink initial BWP for the second type of UE, determine the fifth downlink initial BWP configured in the corresponding MIB of the target cell as the first downlink initial BWP.

[0072] In one embodiment, the device further includes a first processing module configured to perform at least one of the following:

[0073] In response to the target cell being configured with a second uplink initial BWP for the first type of UE, determine the second uplink initial BWP as the first uplink initial BWP;

[0074] In response to the target cell being configured with a third uplink initial BWP for a second type of UE, and the bandwidth of the third uplink initial BWP being less than or equal to the bandwidth of the uplink BWP supported by the first type of UE, determine the third uplink initial BWP as the first uplink initial BWP.

[0075] According to a fourth aspect of the embodiments of the present disclosure, there is provided an information transmission device, where the device includes:

[0076] A second transceiver module, configured to receive a cell handover command from a base station, where the cell handover command carries BWP configuration information indicating a bandwidth part BWP corresponding to the first type of user equipment UE in a target cell, and where the BWP of the target cell is determined by the base station based on the type of the first type of UE.

[0077] In one embodiment, the BWP corresponding to the first type of UE includes at least one of the following:

[0078] The first activated downlink BWP;

[0079] The first activated uplink BWP;

[0080] The first downlink initial BWP;

[0081] The first uplink initial BWP.

[0082] In one embodiment, there is no synchronization signal block SSB in the first activated downlink BWP;

[0083] Or,

[0084] There is an SSB in the first activated downlink BWP.

[0085] In one embodiment, the apparatus further includes a second processing module, and the second processing module is configured to:

[0086] In response to there being no SSB in the first activated downlink BWP, perform synchronization and / or radio signal measurement through the downlink initial BWP having an SSB in the target cell.

[0087] In one embodiment, there is no SSB in the first downlink initial BWP;

[0088] Or,

[0089] There is an SSB in the first downlink initial BWP.

[0090] In one embodiment, the apparatus further includes a second processing module, and the second processing module is configured to:

[0091] In response to there being no SSB in the first downlink initial BWP, perform synchronization and / or radio signal measurement through the downlink initial BWP having an SSB in the target cell.

[0092] In one embodiment, the second transceiver module is further configured to:

[0093] Send indication information to the base station indicating whether the first type of user equipment (UE) has a predetermined capability, where the predetermined capability is used for the base station to determine whether to indicate to the first type of user equipment (UE) the first activated downlink bandwidth part (BWP) having a non-cell-defined synchronization signal block (NCD-SSB) and / or the first downlink initial BWP having an NCD-SSB.

[0094] According to a fifth aspect of the embodiments of the present disclosure, there is provided a communication device including a processor, a memory, and an executable program stored on the memory and executable by the processor. When the processor runs the executable program, it executes the steps of the information transmission method described in the first aspect or the second aspect.

[0095] According to a sixth aspect of the embodiments of the present disclosure, there is provided a storage medium having an executable program stored thereon. When the executable program is executed by a processor, it implements the steps of the information transmission method described in the first aspect or the second aspect.

[0096] The information transmission method, device, communication device, and storage medium provided by the embodiments of the present disclosure. The information transmission method includes: the base station sends a cell handover command to the first type of user equipment (UE), where the cell handover command carries BWP configuration information indicating the bandwidth part (BWP) of the target cell, and the BWP of the target cell is determined based on the type of the first type of UE. In this way, the BWP of the target cell for handover is configured based on the type of UE, reducing the situation where the configured BWP cannot be supported by the UE, improving the cell handover success rate, and improving communication reliability.

[0097] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the embodiments of the present disclosure. Description of the Drawings

[0098] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the embodiments of the present invention.

[0099] Figure 1 It is a schematic structural diagram of a wireless communication system shown according to an exemplary embodiment;

[0100] Figure 2 It is a schematic flowchart of an information transmission method shown according to an exemplary embodiment;

[0101] Figure 3 It is a schematic flowchart of another information transmission method shown according to an exemplary embodiment;

[0102] Figure 4It is a schematic flowchart of yet another information transmission method shown according to an exemplary embodiment;

[0103] Figure 5 It is a schematic flowchart of yet another information transmission method shown according to an exemplary embodiment;

[0104] Figure 6 It is a schematic flowchart of yet another information transmission method shown according to an exemplary embodiment;

[0105] Figure 7 It is a schematic flowchart of yet another information transmission method shown according to an exemplary embodiment;

[0106] Figure 8 It is a schematic flowchart of yet another information transmission method shown according to an exemplary embodiment;

[0107] Figure 9 It is a block diagram of an information transmission device shown according to an exemplary embodiment;

[0108] Figure 10 It is a block diagram of another information transmission device shown according to an exemplary embodiment;

[0109] Figure 11 It is a block diagram of a device for information transmission shown according to an exemplary embodiment. Detailed implementation manners

[0110] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with the embodiments of the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present invention.

[0111] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present disclosure. The singular forms of "a", "the" and "said" used in the embodiments of the present disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0112] It should be understood that although terms such as first, second, and third may be used in the embodiments of the present disclosure to describe various pieces of information, these pieces of information should not be limited to these terms. These terms are only used to distinguish pieces of information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first piece of information may also be referred to as the second piece of information, and similarly, the second piece of information may also be referred to as the first piece of information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0113] Please refer to Figure 1 , which shows a schematic structural diagram of a wireless communication system provided by the embodiments of the present disclosure. As Figure 1 shown, the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: a plurality of terminals 11 and a plurality of base stations 12.

[0114] Among them, the terminal 11 may be a device that provides voice and / or data connectivity to a user. The terminal 11 may communicate with one or more core networks via a Radio Access Network (RAN). The terminal 11 may be an Internet of Things (IoT) terminal, such as a sensor device, a mobile phone (or referred to as a "cellular" phone), and a computer with an IoT terminal. For example, it may be a fixed, portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted device. For example, a Station (STA), a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a user equipment (UE). Alternatively, the terminal 11 may also be a device of an unmanned aerial vehicle. Alternatively, the terminal 11 may also be a vehicle-mounted device, such as, for example, an on-board computer with wireless communication capabilities, or a wireless communication device external to the on-board computer. Alternatively, the terminal 11 may also be a roadside device, such as, for example, a street lamp, a signal lamp, or other roadside devices with wireless communication capabilities.

[0115] The base station 12 may be a network-side device in a wireless communication system. Among them, the wireless communication system may be a fourth-generation mobile communication technology (4G) system, also known as a Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, also known as a new radio (NR) system or a 5G NR system. Or, the wireless communication system may also be the next-generation system of the 5G system. Among them, the access network in the 5G system may be called NG-RAN (New Generation-Radio Access Network, new generation radio access network). Or, an MTC system.

[0116] Among them, the base station 12 may be an evolved Node B (eNB) adopted in the 4G system. Or, the base station 12 may also be a base station (gNB) with a centralized distributed architecture adopted in the 5G system. When the base station 12 adopts a centralized distributed architecture, it usually includes a central unit (CU) and at least two distributed units (DUs). The protocol stacks of the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Media Access Control (MAC) layer are set in the central unit; the Physical (PHY) layer protocol stack is set in the distributed unit. The specific implementation manner of the base station 12 is not limited in the embodiments of the present disclosure.

[0117] A wireless connection may be established between the base station 12 and the terminal 11 through a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as the new radio; or, the wireless air interface may also be a wireless air interface based on the next-generation mobile communication network technology standard of 5G.

[0118] In some embodiments, an E2E (End to End) connection can also be established between terminals 11. For example, in scenarios such as V2V (vehicle to vehicle), V2I (vehicle to Infrastructure), and V2P (vehicle to pedestrian) communications in vehicle-to-everything (V2X) communications.

[0119] In some embodiments, the above wireless communication system may further include a network management device 13.

[0120] A plurality of base stations 12 are respectively connected to the network management device 13. Among them, the network management device 13 may be a core network device in the wireless communication system. For example, the network management device 13 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the network management device may also be other core network devices, such as a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS), etc. The implementation form of the network management device 13 is not limited in the embodiments of the present disclosure.

[0121] The execution subjects involved in the embodiments of the present disclosure include, but are not limited to: mobile phone terminals in a cellular mobile communication system, and network-side devices, such as access network devices such as base stations, and core networks, etc.

[0122] In the related art, a dedicated downlink initial BWP for Redcap UE can be separately configured in SIB1: RedCap-specific initial DL BWP configuration, which is used for receiving a Random Access Response (RAR); it can also be used for paging, etc.

[0123] For FR1, the dedicated downlink initial BWP can be configured to not have CD-SSB and CORESET#0. In the FR1 range, if the dedicated downlink initial BWP is configured for random access and not for idle state / inactive state paging, then the Redcap UE does not expect the dedicated downlink initial BWP to have SSB / CORESET#0 / SIB. In this case, the radio access network (RAN1) believes that the Redcap UE assumes that the REDCAP UE performs random access in the dedicated downlink initial BWP and does not need to monitor paging in the BWP containing CORESET#0.

[0124] For FR2, the dedicated downlink initial BWP can be configured to not have CD-SSB. In the FR2 range, if the dedicated downlink initial BWP is configured for random access and not for idle state / inactive state paging, then the Redcap UE does not expect the dedicated downlink initial BWP to have SSB / CORESET#0 / SIB. In this case, the radio access network (RAN1) believes that the Redcap UE assumes that the REDCAP UE performs random access in the dedicated downlink initial BWP and does not need to monitor paging in the BWP containing CORESET#0.

[0125] In the uplink direction, an uplink initial BWP is also separately configured in SIB1: the RedCap-specific initial UL BWP configuration, which is used for random access.

[0126] However, when the Redcap UE performs a cell handover, the initial BWP it uses will be the one sent by the target base station to the UE in the handover command. In the related art, there is no definition on how to configure the downlink initial BWP for the handover process. Moreover, for the Redcap UE, if the initial BWP used by the ordinary UE is directly configured for the Redcap UE, a situation where the Redcap UE cannot support it may occur because the bandwidth of the initial BWP used by the ordinary UE may be outside the bandwidth range that the Redcap UE can support, which means that the Redcap UE may not be able to receive the corresponding configuration of the initial BWP.

[0127] Therefore, how to configure the BWP for the Redcap UE during the handover process to meet the Redcap UE's requirements for the BWP and improve the communication reliability of the Redcap UE is an urgent problem to be solved.

[0128] As Figure 2 shown, this exemplary embodiment provides an information transmission method, which can be executed by a base station of a cellular mobile communication system, including:

[0129] Step 201: Send a cell handover command to a first type of user equipment (UE). The cell handover command carries BWP configuration information indicating a bandwidth part (BWP) of a target cell, where the BWP of the target cell is determined based on the type of the first type of UE.

[0130] During the process of the UE handing over from a serving cell to a target cell, the base station to which the serving cell belongs may send a handover command to the UE to instruct the UE to hand over to the target cell. The serving cell and the target cell may be cells generated by the same base station or cells generated by different base stations. The base station to which the serving cell belongs may apply for and allocate resources from the base station to which the target cell belongs.

[0131] The first type of UE may be a UE in the RRC connected state. The signal reception capability of the first type of UE is lower than that of the second type of UE. That is to say, the first type of UE may have relatively lower signal reception capability compared with the second type of UE. For example, the first type of UE has a smaller number of receiving antennas compared with the second type of UE. The first type of UE has a weaker BWP support capability. For example, the bandwidth of the BWP supported by the first type of UE is 20M in the FR1 range and 100M in the FR2 range. The bandwidth of the BWP supported by the second type of UE is greater than the bandwidth of the BWP supported by the first type of UE.

[0132] Exemplarily, the first type of UE may be a Redcap type UE introduced in 3GPP Release 17 (R17). The first type of UE may also be an enhanced Redcap type UE introduced in subsequent 3GPP Release versions; for example, the first type of UE may be a Redcap type UE. The second type of UE may be an eMMB type UE.

[0133] The BWP of the target cell indicated by the BWP configuration information may be determined by the base station to which the serving cell belongs or by the base station to which the target cell belongs. The BWP indicated by the BWP configuration information may include: an initial BWP for accessing the target cell, and / or a first activated BWP for transmitting service data, etc.

[0134] Here, the BWP indicated by the BWP configuration information may be determined by the base station to which the target cell belongs. The base station may determine a BWP suitable for the UE type based on the type of the UE. For example, when the handover UE is the first type of UE, a BWP with a relatively narrow bandwidth may be configured for the first type of UE so that the configured BWP can meet the support capability of the first type of UE; when the handover UE is the second type of UE, a BWP with a relatively wide bandwidth may be configured for the second type of UE.

[0135] In one embodiment, the UE may report its own UE type. When the base station to which the serving cell belongs sends a handover request to the base station to which the target cell belongs, it may carry the type of the UE in the handover request. The base station to which the target cell belongs may configure the BWP of the UE based on the type of the UE. For example, the UE may report its own UE type to the base station to which the serving cell belongs, and during the handover process, the base station to which the serving cell belongs may indicate the type of the UE to the base station to which the target cell belongs.

[0136] After the base station to which the target cell belongs determines the BWP configured for the first type of UE, it may send it to the base station to which the serving cell of the first type of UE belongs, and then the base station to which the serving cell belongs sends it to the UE.

[0137] After the UE receives the BWP configuration information, it may perform data transmission based on the BWP of the target cell indicated by the BWP configuration information: such as receiving a random access response, transmitting service data, etc. Since the BWP is configured based on the type of the UE, the UE can support this BWP.

[0138] In this way, the BWP of the target cell for handover is configured for the UE based on the type of the UE, reducing the situation where the configured BWP cannot be supported by the UE, improving the cell handover success rate, and improving communication reliability.

[0139] In one embodiment,

[0140] The BWP corresponding to the first type of UE indicated by the BWP configuration information includes at least one of the following:

[0141] The first activated downlink BWP;

[0142] The first activated uplink BWP;

[0143] The first downlink initial BWP;

[0144] The first uplink initial BWP.

[0145] The first activated downlink BWP may be the initial activated downlink BWP used by the first type of UE, such as a Redcap UE, for transmitting service data in the target cell. The second type of UE, such as an eMMB UE, can support a BWP bandwidth greater than the BWP bandwidth that the first type of UE can support. Therefore, the bandwidth of the first activated downlink BWP configured by the base station for the first type of UE is less than or equal to the bandwidth of the first activated downlink BWP configured for the second type of UE, so that the bandwidth of the first activated downlink BWP configured for the first type of UE can meet the support capabilities of the first type of UE.

[0146] The first activated uplink BWP can be the initial activated uplink BWP adopted by a first type of UE, such as a Redcap UE, when performing service data transmission in the target cell. The second type of UE, such as an eMMB UE, can support a BWP bandwidth greater than that supported by the first type of UE. Therefore, the bandwidth of the first activated uplink BWP configured by the base station for the first type of UE is less than or equal to the bandwidth of the first activated uplink BWP configured for the second type of UE, so that the bandwidth of the first activated uplink BWP configured for the first type of UE can meet the support capabilities of the first type of UE.

[0147] The first downlink initial BWP can be the BWP for a first type of UE to perform random access in the target cell. For example, the first downlink initial BWP can be the BWP for a first type of UE to receive a random access response (RAR) in the target cell; the first downlink initial BWP can also be the BWP for a first type of UE to receive paging in the target cell. For example, the first downlink initial BWP can be the initialDownlinkBWP-RedCap configured using DownlinkConfigCommon. The base station can configure the bandwidth of the first downlink initial BWP to be less than or equal to the bandwidth of the downlink initial BWP configured for the second type of UE, so that the bandwidth of the first downlink initial BWP can meet the support capabilities of the first type of UE.

[0148] Exemplarily, the first downlink initial BWP can be a Redcap UE-specific downlink initial BWP (RedCap-specific initial DL BWP).

[0149] The first uplink initial BWP can be the BWP for a first type of UE to perform random access in the target cell. The base station can configure the bandwidth of the first uplink initial BWP to be less than or equal to the bandwidth of the downlink initial BWP configured for the second type of UE, so that the bandwidth of the first uplink initial BWP can meet the support capabilities of the first type of UE.

[0150] Exemplarily, the first uplink initial BWP can be a Redcap UE-specific uplink initial BWP (RedCap-specific initial UL BWP).

[0151] In this way, the BWP of the target cell for handover is configured based on the type of UE, reducing the situation where the configured BWP cannot be supported by the UE, improving the cell handover success rate, and improving communication reliability.

[0152] In one embodiment,

[0153] There is no Synchronization Signal Block (SSB) in the first activated downlink Bandwidth Part (BWP).

[0154] Or,

[0155] There is an SSB in the first activated downlink BWP.

[0156] There may be no SSB in the first activated downlink BWP configured for the first type of User Equipment (UE). Here, the SSB may include: Cell Defining SSB (CD-SSB) or Non Cell-Defining SSB (NCD-SSB). Among them, the CD-SSB has System Information Block 1 (SIB), that is, Remain Minimum System Information (RMSI), which can be used to indicate a cell, and the CD-SSB can be used for synchronization or signal measurement. The NCD-SSB cannot be used to determine a cell, and the NCD-SSB can be used for synchronization or signal measurement.

[0157] In one embodiment, in response to there being no SSB in the first activated downlink BWP, the first type of UE performs synchronization and / or radio signal measurement through the downlink initial BWP with an SSB in the target cell.

[0158] The first activated downlink BWP configured for the first type of UE does not have an SSB, and the first type of UE can use the downlink initial BWP with an SSB for synchronization. For example, the first type of UE can, in the target cell, obtain the downlink initial BWP configured by the Master Information Block (MIB) by decoding the MIB for synchronization and / or radio signal measurement. For example, perform synchronization and / or measurement through the dedicated downlink initial BWP configured by the MIB; or, the first type of UE can use the downlink initial BWP used by the second type of UE for synchronization and / or radio signal measurement.

[0159] There may be an SSB in the first activated downlink BWP configured for the first type of UE. Here, the SSB may include: CD-SSB or NCD-SSB. The first type of UE can complete synchronization and / or radio signal measurement based on the SSB in the first activated downlink BWP.

[0160] The presence of an SSB in the first activated downlink BWP may include: there is a CD-SSB in the first activated downlink BWP, or there is an NCD-SSB in the first activated downlink BWP.

[0161] If the first activated downlink BWP does not have an SSB, the synchronization and measurement during handover can be accelerated, optimizing the performance.

[0162] In one embodiment, in response to determining that the first type of UE has a predetermined capability, the first activated downlink BWP indicated by the BWP configuration information has a non-cell-defined synchronization signal block NCD-SSB.

[0163] The base station may configure the first activated downlink BWP with NCD-SSB for the first type of UE based on the predetermined capability of the first type of UE.

[0164] In one embodiment, the predetermined capability may be obtained by the base station (target base station) to which the target cell belongs from the base station (original base station) to which the serving cell belongs. For example, the predetermined capability of the first type of UE may be carried in the handover request sent by the original base station to the target base station. The predetermined capability may be obtained by the base station (target base station) to which the target cell belongs from the core network. The first type of UE may send its own predetermined capability to the original base station and / or the core network when connected to the original base station.

[0165] The predetermined capability may include the requirements of the first type of UE for the first activated downlink BWP. For example, the predetermined capability may be that the first type of UE supports Feature Group FG 6-1, but expects the BWP to include NCD-SSB and not include CORESET#0 / SIB, etc.

[0166] In one embodiment,

[0167] There is no SSB in the first downlink initial BWP;

[0168] Or,

[0169] There is an SSB in the first downlink initial BWP.

[0170] There may be no SSB in the first downlink initial BWP. Here, the SSB may include: CD-SSB or NCD-SSB. The CD-SSB has System Information Block 1 (SIB), that is, the remaining minimum system information (RMSI), which can be used to indicate a cell, and the CD-SSB can be used for synchronization or signal measurement. The NCD-SSB cannot be used to determine a cell, and the NCD-SSB can be used for synchronization or signal measurement.

[0171] In one embodiment, in response to there being no SSB in the first downlink initial BWP, the first type of UE synchronizes and / or performs wireless signal measurement with the target cell through the downlink initial BWP having an SSB in the target cell.

[0172] In this case, the duration required for additional transceiver conversion will increase the delay of synchronization and random access during the handover process. Without SSB in the first downlink initial BWP, the synchronization and measurement during the handover process can be accelerated, optimizing the performance.

[0173] Without SSB in the first downlink initial BWP, the first type of UE can use the downlink initial BWP with SSB for synchronization. For example, the first type of UE can, within the target cell, obtain the downlink initial BWP configured by the MIB through decoding the MIB for synchronization, for example, synchronize through the dedicated downlink initial BWP configured by the MIB; or, the first type of UE can use the downlink initial BWP used by the second type of UE for synchronization and / or radio signal measurement.

[0174] There may be SSB in the first downlink initial BWP. Here, the SSB may include: CD-SSB, or NCD-SSB. The first type of UE can complete synchronization and / or radio signal measurement based on the SSB in the first downlink initial BWP.

[0175] The presence of SSB in the first downlink initial BWP may include: there is CD-SSB in the first downlink initial BWP, or there is NCD-SSB in the first downlink initial BWP.

[0176] In one embodiment, in response to determining that the first type of UE has a predetermined capability, the first downlink initial BWP indicated by the BWP configuration information has NCD-SSB.

[0177] The base station can configure the first downlink initial BWP with NCD-SSB for the first type of UE based on the predetermined capability of the first type of UE.

[0178] In one embodiment, the predetermined capability may be obtained by the base station (target base station) of the target cell from the base station (original base station) of the serving cell. For example, the predetermined capability of the first type of UE may be carried in the handover request sent by the original base station to the target base station. The predetermined capability may be obtained by the base station (target base station) of the target cell from the core network. The first type of UE may send its own predetermined capability to the original base station and / or the core network when connected to the original base station.

[0179] The predetermined capability may include the requirements of the first type of UE for the first downlink initial BWP. For example, the predetermined capability may be: the first type of UE supports FG 6-1, but expects the BWP to include NCD-SSB and does not include CORESET#0 / SIB, etc.

[0180] As Figure 3 shown, this exemplary embodiment provides an information transmission method that can be executed by the base station of a cellular mobile communication system, including at least one of the following:

[0181] Step 301a: In response to the target cell being configured with a second downlink initial BWP for the first type of UE, determine the second downlink initial BWP as the first downlink initial BWP;

[0182] Step 301b: In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, determine the third downlink initial BWP as the first downlink initial BWP;

[0183] Step 301c: In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being greater than the bandwidth of the downlink BWP supported by the first type of UE, determine the fourth downlink initial BWP configured in the corresponding MIB of the target cell as the first downlink initial BWP;

[0184] Step 301d: In response to the target cell not being configured with a third downlink initial BWP for the second type of UE, determine the fifth downlink initial BWP configured in the corresponding MIB of the target cell as the first downlink initial BWP.

[0185] Step 301a, Step 301b, Step 301c, and / or Step 301d can be implemented independently or in combination with Step 201.

[0186] If in the target cell, a dedicated second downlink initial BWP is configured for the first type of UE. For example, a dedicated downlink initial BWP (RedCap - specific initial DL BWP) is configured for the Redcap UE, then the network device directly determines the second downlink initial BWP as the first downlink initial BWP and indicates it to the first type of UE through the BWP configuration information. The first type of UE will use this initial BWP for random access during handover. Here, the dedicated downlink initial BWP can be the BWP separately configured by the base station for the Redcap UE in SIB1. The dedicated downlink initial BWP can be used for the initial random access of the UE and also for the cell handover of the UE. Here, the network device can include access network devices and / or core network devices, etc.

[0187] If in the target cell, there is no dedicated second downlink initial BWP configured for the first type of UE, and there is a third downlink initial BWP configured for the second type of UE, such as eMMB UE, etc., and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth supported by the first type of UE, such as Redcap UE (20M for FR1 and 100M for FR2), then the network device directly determines the third downlink initial BWP as the first downlink initial BWP and indicates it to the first type of UE through the BWP configuration information during cell handover; the first type of UE will use this initial BWP for random access during handover.

[0188] If in the target cell, there is no dedicated second downlink initial BWP configured for the first type of UE, and there is a third downlink initial BWP configured for the second type of UE, such as eMMB UE, etc., and the bandwidth of the third downlink initial BWP is greater than the bandwidth supported by the first type of UE, such as Redcap UE (20M for FR1 and 100M for FR2), the network device directly determines the fourth downlink initial BWP configured in the MIB as the first downlink initial BWP and indicates it to the first type of UE through the BWP configuration information during cell handover. The first type of UE will use this initial BWP for random access during handover or can, within the target cell, obtain the fourth downlink initial BWP configured in the MIB by decoding the MIB for random access.

[0189] If in the target cell, there is a third downlink initial BWP configured for the second type of UE, such as eMMB UE, etc., and there is also no dedicated downlink initial BWP configured for the first type of UE, then the network device directly determines the fourth downlink initial BWP configured in the MIB as the first downlink initial BWP and indicates it to the first type of UE through the BWP configuration information during cell handover. The first type of UE will use this initial BWP for random access during handover or can, within the target cell, obtain the fifth downlink initial BWP configured in the MIB by decoding the MIB for random access.

[0190] In one embodiment, if the protocol stipulates that it is necessary to ensure quick access during handover, then an SSB can be configured within the first downlink initial BWP. At this time, the downlink initial BWP configured for regular users or the downlink initial BWP configured in the MIB can be configured for the terminal for access during handover. Because such initial BWPs usually have CD-SSB

[0191] In one embodiment, regardless of whether a dedicated second downlink initial BWP is configured for the first type of UE in the target cell, if in the target cell, a third downlink initial BWP is configured for the second type of UE, such as an eMMB UE, etc., and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth supported by the first type of UE, such as a Redcap UE (20M for FR1 and 100M for FR2), the network device directly determines the third downlink initial BWP as the first downlink initial BWP, and indicates it to the first type of UE through BWP configuration information during cell handover; the first type of UE will use this initial BWP to perform random access during handover.

[0192] Regardless of whether a dedicated second downlink initial BWP is configured for the first type of UE in the target cell, if in the target cell, a third downlink initial BWP is configured for the second type of UE, such as an eMMB UE, etc., and the bandwidth of the third downlink initial BWP is greater than the bandwidth supported by the first type of UE, such as a Redcap UE (20M for FR1 and 100M for FR2), the network device directly determines the fourth downlink initial BWP configured in the MIB as the first downlink initial BWP, and indicates it to the first type of UE through BWP configuration information during cell handover. The first type of UE will use this initial BWP to perform random access during handover or can, within the target cell, obtain the fourth downlink initial BWP configured in the MIB by decoding the MIB to perform random access.

[0193] As Figure 4 shown, this exemplary embodiment provides an information transmission method that can be executed by a base station of a cellular mobile communication system, including at least one of the following:

[0194] Step 401a: In response to the target cell being configured with a second uplink initial BWP for the first type of UE, determine the second uplink initial BWP as the first uplink initial BWP;

[0195] Step 401b: In response to the target cell being configured with a third uplink initial BWP for the second type of UE, and the bandwidth of the third uplink initial BWP being less than or equal to the bandwidth of the uplink BWP supported by the first type of UE, determine the third uplink initial BWP as the first uplink initial BWP.

[0196] Step 401a and / or step 401b can be implemented independently or in combination with step 301a, step 301b, step 301c, step 301d, and / or step 201.

[0197] If in the target cell, a dedicated second uplink initial BWP is configured for the first type of UE, for example, a dedicated uplink initial BWP (RedCap - specific initial UL BWP) is configured for Redcap UE, the network device directly determines the second uplink initial BWP as the first uplink initial BWP and indicates it to the first type of UE through the BWP configuration information. The first type of UE will use this initial BWP for random access during handover.

[0198] If in the target cell, a third uplink initial BWP is configured for the second type of UE, such as eMMB UE, etc., and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth supported by the first type of UE, such as Redcap UE, the network device directly determines the third uplink initial BWP as the first uplink initial BWP and indicates it to the first type of UE through the BWP configuration information during cell handover; the first type of UE will use this initial BWP for random access during handover.

[0199] As Figure 5 shown, this exemplary embodiment provides an information transmission method, which can be executed by a UE of a cellular mobile communication system and includes at least one of the following:

[0200] Step 501: Receive a cell handover command from a base station, where the cell handover command carries BWP configuration information indicating the bandwidth part BWP corresponding to the first type of UE in the target cell, and the BWP of the target cell is determined by the base station based on the type of the first type of UE.

[0201] During the process of the UE switching from the serving cell to the target cell, the base station to which the serving cell belongs can send a handover command to the UE to indicate the UE to switch to the target cell. The serving cell and the target cell can be cells generated by the same base station or cells generated by different base stations. The base station to which the serving cell belongs can apply for and allocate resources from the base station to which the target cell belongs.

[0202] The first type of UE can be a UE in the RRC connected state. Among them, the signal reception ability of this first type of UE is lower than that of the second type of UE, that is to say, the first type of UE can have relatively lower signal reception ability compared with the second type of UE. For example, the first type of UE has a smaller number of receiving antennas compared with the second type of UE. The first type of UE has a weaker BWP support ability. For example, the bandwidth of the BWP supported by the first type of UE is 20M in the FR1 range and 100M in the FR2 range. The bandwidth of the BWP supported by the second type of UE is greater than the bandwidth of the BWP supported by the first type of UE.

[0203] Exemplarily, the first type of UE may be a Redcap type UE introduced in 3GPP Release 17 (R17). The first type of UE may also be an enhanced Redcap type UE introduced in subsequent 3GPP Release versions; for example, the first type of UE may be a Redcap type UE. The second type of UE may be an eMMB type UE.

[0204] The BWP of the target cell indicated by the BWP configuration information may be determined by the base station to which the serving cell belongs, or may be determined by the base station to which the target cell belongs. The BWP indicated by the BWP configuration information may include: the initial BWP for accessing the target cell, and / or the first activated BWP for transmitting service data, etc.

[0205] Here, the BWP indicated by the BWP configuration information may be determined by the base station to which the target cell belongs. The base station may determine the BWP applicable to the UE type based on the type of the UE. For example, when the handover UE is the first type of UE, a BWP with a relatively narrow bandwidth may be configured for the first type of UE, so that the configured BWP can meet the support capabilities of the first type of UE; when the handover UE is the second type of UE, a BWP with a relatively wide bandwidth may be configured for the second type of UE.

[0206] In one embodiment, the UE may report its own UE type. When the base station to which the serving cell belongs sends a handover request to the base station to which the target cell belongs, it may carry the type of the UE in the handover request. The base station to which the target cell belongs may configure the BWP of the UE based on the type of the UE. For example, the UE may report its own UE type to the base station to which the serving cell belongs, and during the handover process, the base station to which the serving cell belongs may indicate the type of the UE to the base station to which the target cell belongs.

[0207] After the base station to which the target cell belongs determines the BWP configured for the first type of UE, it may send it to the base station to which the serving cell of the first type of UE belongs, and then the base station to which the serving cell belongs sends it to the UE.

[0208] After receiving the BWP configuration information, the UE may perform data transmission based on the BWP of the target cell indicated by the BWP configuration information: such as receiving a random access response, transmitting service data, etc. Since the BWP is configured based on the type of the UE, the UE can support this BWP.

[0209] In this way, the BWP of the target cell for handover is configured for the UE based on the type of the UE, reducing the situation where the configured BWP cannot be supported by the UE, improving the cell handover success rate, and improving communication reliability.

[0210] In one embodiment, the BWP corresponding to the first type of UE shown includes at least one of the following:

[0211] The first activated downlink BWP;

[0212] The first activated uplink BWP;

[0213] The first downlink initial BWP;

[0214] The first uplink initial BWP.

[0215] The first activated downlink BWP can be for the first type of UE, such as the initial activated downlink BWP used by a Redcap UE for service data transmission in the target cell. The second type of UE, such as an eMMB UE, can support a larger BWP bandwidth than the first type of UE. Therefore, the bandwidth of the first activated downlink BWP configured by the base station for the first type of UE is less than or equal to the bandwidth of the first activated downlink BWP configured for the second type of UE, so that the bandwidth of the first activated downlink BWP configured for the first type of UE can meet the support capabilities of the first type of UE.

[0216] The first activated uplink BWP can be for the first type of UE, such as the initial activated uplink BWP used by a Redcap UE for service data transmission in the target cell. The second type of UE, such as an eMMB UE, can support a larger BWP bandwidth than the first type of UE. Therefore, the bandwidth of the first activated uplink BWP configured by the base station for the first type of UE is less than or equal to the bandwidth of the first activated uplink BWP configured for the second type of UE, so that the bandwidth of the first activated uplink BWP configured for the first type of UE can meet the support capabilities of the first type of UE.

[0217] The first downlink initial BWP can be the BWP for a first type of UE to perform random access in the target cell. For example, the first downlink initial BWP can be the BWP for a first type of UE to receive a Random Access Response (RAR) in the target cell; the first downlink initial BWP can also be the BWP for a first type of UE to receive paging in the target cell. For example, the first downlink initial BWP can be the initialDownlinkBWP-RedCap configured using DownlinkConfigCommon. The base station can configure the bandwidth of the first downlink initial BWP to be less than or equal to the bandwidth of the downlink initial BWP configured for the second type of UE, so that the bandwidth of the first downlink initial BWP can meet the support capabilities of the first type of UE.

[0218] Exemplarily, the first downlink initial BWP can be a RedCap-specific initial DL BWP.

[0219] The first uplink initial BWP can be the BWP for a first type of UE to perform random access within the target cell. The base station can configure the bandwidth of the first uplink initial BWP to be less than or equal to the bandwidth of the downlink initial BWP configured for a second type of UE, so that the bandwidth of the first uplink initial BWP can meet the support capabilities of the first type of UE.

[0220] Exemplarily, the first uplink initial BWP can be a RedCap-specific initial UL BWP.

[0221] In this way, configure the BWP of the target cell for handover for the UE based on the type of the UE, reduce the situation where the configured BWP cannot be supported by the UE, improve the success rate of cell handover, and improve communication reliability.

[0222] In one embodiment,

[0223] There is no synchronization signal block (SSB) within the first activated downlink BWP;

[0224] Or,

[0225] There is an SSB within the first activated downlink BWP.

[0226] There may be no SSB within the first activated downlink BWP configured for the first type of UE. Here, the SSB can include: cell-Defining SSB (CD-SSB) or Non Cell-Defining SSB (NCD-SSB). Among them, the CD-SSB has System Information Block 1 (SIB), that is, remain minimum system information (RMSI), which can be used to indicate a cell, and the CD-SSB can be used for synchronization or for signal measurement. The NCD-SSB cannot be used to determine a cell and can be used for synchronization or for signal measurement.

[0227] There may be an SSB within the first activated downlink BWP configured for the first type of UE. Here, the SSB can include: CD-SSB or NCD-SSB. The first type of UE can complete synchronization and / or radio signal measurement based on the SSB within the first activated downlink BWP. The inclusion of the SSB is beneficial for the terminal to complete synchronization and random access as soon as possible during the handover process.

[0228] The presence of an SSB within the first activated downlink BWP may include: having a CD-SSB within the first activated downlink BWP, or having an NCD-SSB within the first activated downlink BWP.

[0229] As Figure 6 shown, this exemplary embodiment provides an information transmission method that can be executed by a UE of a cellular mobile communication system, including:

[0230] Step 601: In response to the absence of an SSB within the first activated downlink BWP, perform synchronization and / or radio signal measurement through the downlink initial BWP having an SSB within the target cell.

[0231] Step 601 can be implemented independently or in combination with step 501.

[0232] The first activated downlink BWP configured for the first type of UE does not have an SSB, and the first type of UE can use the downlink initial BWP having an SSB for synchronization. For example, the first type of UE can, within the target cell, obtain the downlink initial BWP configured by the MIB by decoding the MIB for synchronization and / or radio signal measurement. For example, perform synchronization and / or measurement through the dedicated downlink initial BWP configured by the MIB; or, the first type of UE can use the downlink initial BWP used by the second type of UE for synchronization and / or radio signal measurement.

[0233] In one embodiment, in response to determining that the first type of UE has a predetermined capability, the first activated downlink BWP indicated by the BWP configuration information has a non-cell-defined synchronization signal block NCD-SSB. The inclusion of the NCD-SSB is beneficial for the terminal to complete synchronization and random access as soon as possible during the handover process.

[0234] The base station can, based on the predetermined capability of the first type of UE, configure the first activated downlink BWP having an NCD-SSB for the first type of UE.

[0235] In one embodiment, the predetermined capability can be obtained by the base station (target base station) of the target cell from the base station (original base station) of the serving cell. For example, the predetermined capability of the first type of UE can be carried in the handover request sent by the original base station to the target base station. The predetermined capability can be obtained by the base station (target base station) of the target cell from the core network. The first type of UE can, when connected to the original base station, send its own predetermined capability to the original base station and / or the core network.

[0236] The predetermined capability may include the requirements of the first type of UE for the first activated downlink BWP. For example, the predetermined capability can be: the first type of UE supports FG 6-1, but expects the BWP to include an NCD-SSB and not include CORESET#0 / SIB, etc.

[0237] In one embodiment,

[0238] there is no SSB in the first downlink initial BWP;

[0239] Or,

[0240] there is an SSB in the first downlink initial BWP.

[0241] There may be no SSB in the first downlink initial BWP. Here, the SSB may include: CD-SSB, or NCD-SSB. The CD-SSB has System Information Block 1 (SIB, System Information Block 1), that is, the remain minimum system information (RMSI), which can be used to indicate a cell, and the CD-SSB can be used for synchronization or signal measurement. The NCD-SSB cannot be used to determine a cell, and the NCD-SSB can be used for synchronization or signal measurement.

[0242] It can be defined that an SSB is required in the first downlink initial BWP. Having an SSB is beneficial for the terminal to complete synchronization and random access as soon as possible during the handover process. Here, the SSB may include: CD-SSB, or NCD-SSB. The first type of UE can complete synchronization and / or wireless signal measurement based on the SSB in the first downlink initial BWP.

[0243] Having an SSB in the first downlink initial BWP may include: having a CD-SSB in the first downlink initial BWP, or having an NCD-SSB in the first downlink initial BWP.

[0244] As Figure 7 shown, this exemplary embodiment provides an information transmission method that can be executed by a UE of a cellular mobile communication system, including:

[0245] Step 701: In response to there being no SSB in the first downlink initial BWP, perform synchronization and / or wireless signal measurement through the downlink initial BWP having an SSB in the target cell.

[0246] Step 701 can be implemented alone or in combination with step 501 and / or step 601.

[0247] There is no SSB in the first downlink initial BWP. The first type of UE can use the downlink initial BWP with SSB for synchronization. For example, the first type of UE can obtain the downlink initial BWP configured by the MIB through decoding the MIB in the target cell for synchronization. For example, it can be synchronized through the dedicated downlink initial BWP configured by the MIB; or, the first type of UE can use the downlink initial BWP used by the second type of UE for synchronization and / or radio signal measurement.

[0248] As Figure 8 shown, this exemplary embodiment provides an information transmission method that can be executed by a UE in a cellular mobile communication system, including:

[0249] Step 801: Send indication information to the base station indicating whether the first type of user equipment UE has a predetermined capability, where the predetermined capability is used for the base station to determine whether to indicate to the first type of user equipment UE the first activated downlink BWP with a non-cell-defined synchronization signal block NCD-SSB and / or the first downlink initial BWP with NCD-SSB.

[0250] Step 801 can be implemented independently or in combination with step 501 and / or step 601 and / or step 701.

[0251] In one embodiment, the predetermined capability can be obtained by the base station (target base station) of the target cell from the base station (original base station) of the serving cell. For example, the predetermined capability of the first type of UE can be carried in the handover request sent by the original base station to the target base station. The predetermined capability can be obtained by the base station (target base station) of the target cell from the core network. The first type of UE can send its own predetermined capability to the original base station and / or the core network when connected to the original base station.

[0252] The predetermined capability can include the requirements of the first type of UE for the first activated downlink BWP and / or the first downlink initial BWP. For example, the predetermined capability can be: the first type of UE supports FG 6-1, but expects the first activated downlink BWP and / or the first downlink initial BWP to include NCD-SSB and not include CORESET#0 / SIB, etc.

[0253] A specific example is provided below in combination with any of the above embodiments:

[0254] 1. A method for configuring the initial BWP during handover for a specific type of terminal;

[0255] a) The specific type of terminal is the Redcap type terminal introduced in R17;

[0256] b) The specific type of terminal is the enhanced Redcap type terminal introduced in subsequent versions;

[0257] c) The target base station will obtain from the handover request that the user type is a specific type of terminal;

[0258] 2. It is agreed that for a connected user of a specific type of terminal, the first active (firstactive) downlink initial BWP specified during its handover may not need to include an SSB (CD-SSB or NCD-SSB):

[0259] a) If the network device includes the first active downlink initial BWP in the handover command, this downlink initial BWP may not be configured with a CD-SSB or NCD-SSB;

[0260] The terminal can use the downlink initial BWP with an SSB for synchronization, such as the downlink initial BWP configured by the MIB; or the downlink initial BWP used by normal users;

[0261] 3. It is agreed that for a connected user of a specific type of terminal, the first active downlink initial BWP specified during its handover needs to include an SSB (CD-SSB or NCD-SSB):

[0262] a) If the network device includes the first active downlink initial BWP in the handover command, then it is necessary to configure a CD-SSB or NCD-SSB for this downlink initial BWP; (that is, if there is no CD-SSB on this BWP, an NCD-SSB needs to be additionally configured).

[0263] b) Further: Configuring an NCD-SSB for the first active downlink initial BWP specified for a specific type of terminal during handover needs to be based on the capabilities of the terminal obtained by the base station,

[0264] As an example, the capabilities of the terminal can be obtained by the target base station from the source base station (such as carried in the handover request) or from the core network.

[0265] The capabilities of the terminal (RedCap UE) can be that the terminal supports FG 6-1, but expects the BWP to include an NCD-SSB and not include CORESET#0 / SIB.

[0266] 4. It is agreed that for a connected user of a specific type of terminal, the downlink initial BWP specified during its handover, which is a dedicated downlink initial BWP configured for the specific type of terminal (that is, initialDownlinkBWP-RedCap in DownlinkConfigCommon, different from the above first active initial BWP), may not need to include a CD-SSB.

[0267] a) If in the target cell, there is a configuration for a dedicated downlink initial BWP for a specific type of terminal, the network device directly configures the dedicated downlink initial BWP for the specific type of terminal; the terminal will use this initial BWP for random access during handover;

[0268] At this time, the dedicated downlink initial BWP configured for the specific type of terminal does not necessarily include the SSB, so the terminal needs to use other initial BWPs (such as the initial BWP for ordinary users) for synchronization and measurement;

[0269] Furthermore: The NCD-SSB can be configured for the dedicated downlink initial BWP configured for the specific type of terminal; in cases where there is no SSB, for example, this can speed up synchronization and measurement during handover and optimize performance.

[0270] Furthermore: Configuring the NCD-SSB for the dedicated downlink initial BWP configured for the specific type of terminal needs to be based on the capabilities of the terminal, such as the terminal supporting the configuration of the NCD-SSB; for example: the capabilities of the terminal (RedCap UE) can be that the terminal supports FG 6-1, but expects the BWP to include the NCD-SSB and not include CORESET#0 / SIB.

[0271] At this time, if the dedicated downlink initial BWP configured for the specific type of terminal does not include the SSB, the terminal uses the downlink initial BWP with the SSB for synchronization and measurement during random access, such as the downlink initial BWP configured by the MIB; or the downlink initial BWP used by normal users;

[0272] 5. It is agreed that for the connected-state users of the specific type of terminal, the specified downlink initial BWP (i.e., initialDownlinkBWP in DownlinkConfigCommon) during handover needs to include the SSB (CD-SSB). The purpose of this is to ensure that the terminal can synchronize and complete random access as soon as possible during handover.

[0273] a) If in the target cell, there is a configuration for the downlink initial BWP used by ordinary users, and its bandwidth is not greater than the bandwidth supported by Redcap users (20M for FR1 and 100M for FR2), the network device directly configures the downlink initial BWP used by ordinary users to the specific type of terminal as the specified downlink initial BWP during handover; the terminal will use this initial BWP for random access during handover;

[0274] b) If in the target cell, there is a configured downlink initial BWP for general users, and its bandwidth is greater than the bandwidth supported by Redcap users (20M for FR1 and 100M for FR2), the network device directly configures the downlink initial BWP configured in the MIB for specific types of terminals as the specified downlink initial BWP during handover; the terminal will use this initial BWP for random access during handover.

[0275] c) If in the target cell, there is no configured downlink initial BWP for general users, the network device directly configures the downlink initial BWP configured in the MIB for specific types of terminals as the specified downlink initial BWP during handover; the terminal will use this initial BWP for random access during handover.

[0276] 6. It is agreed that for connected users of specific types of terminals, the specified uplink initial BWP during handover is the dedicated uplink initial BWP configured for specific types of terminals [RedCap - specific initial UL BWP configuration).

[0277] a) As an embodiment, if the target base station is not configured with a dedicated downlink initial BWP for specific types of terminals, the uplink initial BWP configured for general users is used; at this time, the target base station supports Redcap, either the target base station is configured with a dedicated downlink initial BWP for specific types of terminals, or the uplink initial BWP configured for general users, and its bandwidth is within the bandwidth range of Redcap users.

[0278] The embodiment of the present invention also provides an information transmission device, as Figure 9 shown, applied to a base station in cellular mobile radio communication, wherein the device 100 includes:

[0279] A first transceiver module 110, configured to send a cell handover command to a first type of user equipment UE, wherein the cell handover command carries BWP configuration information indicating the bandwidth part BWP of the target cell, and the BWP of the target cell is determined based on the type of the first type of UE.

[0280] In one embodiment, the BWP corresponding to the first type of UE indicated by the BWP configuration information includes at least one of the following:

[0281] The first activated downlink BWP;

[0282] The first activated uplink BWP;

[0283] The first downlink initial BWP;

[0284] The first uplink initial BWP.

[0285] In one embodiment, there is no Synchronization Signal Block (SSB) in the first activated downlink BWP;

[0286] Or,

[0287] There is an SSB in the first activated downlink BWP.

[0288] In one embodiment, in response to determining that the first type of UE has a predetermined capability, there is a Non-Cell-Defined Synchronization Signal Block (NCD-SSB) in the first activated downlink BWP indicated by the BWP configuration information.

[0289] In one embodiment, there is no SSB in the first downlink initial BWP;

[0290] Or,

[0291] There is an SSB in the first downlink initial BWP.

[0292] In one embodiment, in response to determining that the first type of UE has a predetermined capability, there is a Non-Cell-Defined Synchronization Signal Block (NCD-SSB) in the first downlink initial BWP indicated by the BWP configuration information.

[0293] In one embodiment, the device further includes a first processing module 120, and the first processing module 120 is configured to perform at least one of the following:

[0294] In response to the target cell being configured with a second downlink initial BWP for the first type of UE, determine the second downlink initial BWP as the first downlink initial BWP;

[0295] In response to the target cell being configured with a third downlink initial BWP for a second type of UE, and the bandwidth of the third downlink initial BWP being less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, determine the third downlink initial BWP as the first downlink initial BWP;

[0296] In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being greater than the bandwidth of the downlink BWP supported by the first type of UE, determine the fourth downlink initial BWP configured in the corresponding Master Information Block (MIB) of the target cell as the first downlink initial BWP;

[0297] In response to the target cell not being configured with a third downlink initial BWP for the second type of UE, determine the fifth downlink initial BWP configured in the corresponding MIB of the target cell as the first downlink initial BWP.

[0298] In one embodiment, the apparatus further includes a first processing module 120, and the first processing module 120 is configured to perform at least one of the following:

[0299] In response to the target cell being configured with a second uplink initial BWP for the first type of UE, determining the second uplink initial BWP as the first uplink initial BWP;

[0300] In response to the target cell being configured with a third uplink initial BWP for the second type of UE, and the bandwidth of the third uplink initial BWP being less than or equal to the bandwidth of the uplink BWP supported by the first type of UE, determining the third uplink initial BWP as the first uplink initial BWP.

[0301] An embodiment of the present invention further provides an information transmission apparatus, as Figure 10 shown, applied to a UE in cellular mobile radio communication, where the apparatus 200 includes:

[0302] A second transceiver module 210, configured to receive a cell handover command from a base station, where the cell handover command carries BWP configuration information indicating a bandwidth part BWP corresponding to the first type of user equipment UE in the target cell, and the BWP of the target cell is determined by the base station based on the type of the first type of UE.

[0303] In one embodiment, the BWP corresponding to the first type of UE includes at least one of the following:

[0304] The first activated downlink BWP;

[0305] The first activated uplink BWP;

[0306] The first downlink initial BWP;

[0307] The first uplink initial BWP.

[0308] In one embodiment, there is no synchronization signal block SSB in the first activated downlink BWP;

[0309] Or,

[0310] There is an SSB in the first activated downlink BWP.

[0311] In one embodiment, the apparatus further includes a second processing module 220, and the second processing module 220 is configured to:

[0312] In response to there being no SSB in the first activated downlink BWP, perform synchronization and / or radio signal measurement through the downlink initial BWP having an SSB in the target cell.

[0313] In one embodiment, there is no SSB in the first downlink initial BWP;

[0314] Alternatively,

[0315] there is an SSB in the first downlink initial BWP.

[0316] In one embodiment, the apparatus further includes a second processing module 220, and the second processing module 220 is configured to:

[0317] In response to there being no SSB in the first downlink initial BWP, perform synchronization and / or radio signal measurement through the downlink initial BWP having an SSB in the target cell.

[0318] In one embodiment, the second transceiver module 210 is further configured to:

[0319] Send indication information to the base station indicating whether the first type of user equipment UE has a predetermined capability, where the predetermined capability is used for the base station to determine whether to indicate to the first type of user equipment UE the first activated downlink BWP having a non-cell-defined synchronization signal block NCD-SSB and / or the first downlink initial BWP having an NCD-SSB.

[0320] In an exemplary embodiment, the first transceiver module 110, the first processing module 120, the second transceiver module 210, the second processing module 220, etc. may be implemented by one or more central processing units (CPUs, Central Processing Unit), graphics processing units (GPUs, Graphics Processing Unit), baseband processors (BP, Baseband Processor), application specific integrated circuits (ASICs, Application Specific Integrated Circuit), DSPs, programmable logic devices (PLDs, Programmable Logic Device), complex programmable logic devices (CPLDs, Complex ProgrammableLogic Device), field programmable gate arrays (FPGAs, Field-Programmable Gate Array), general purpose processors, controllers, microcontroller units (MCUs, Micro Controller Unit), microprocessors (Microprocessor), or other electronic components, and are used to execute the foregoing method.

[0321] Figure 11FIG. 0 is a block diagram of an apparatus 3000 for information transmission according to an exemplary embodiment. For example, the apparatus 3000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0322] Referring to Figure 11 , the apparatus 3000 may include one or more of the following components: a processing component 3002, a memory 3004, a power component 3006, a multimedia component 3008, an audio component 3010, an input / output (I / O) interface 3012, a sensor component 3014, and a communication component 3016.

[0323] The processing component 3002 generally controls the overall operation of the apparatus 3000, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 3002 may include one or more processors 3020 to execute instructions to complete all or part of the steps of the above-described method. In addition, the processing component 3002 may include one or more modules to facilitate interaction between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate interaction between the multimedia component 3008 and the processing component 3002.

[0324] The memory 3004 is configured to store various types of data to support the operation of the apparatus 3000. Examples of such data include instructions for any application or method operating on the apparatus 3000, contact data, phone book data, messages, pictures, videos, etc. The memory 3004 may 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 memory, flash memory, a disk, or an optical disc.

[0325] The power component 3006 provides power to the various components of the apparatus 3000. The power component 3006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 3000.

[0326] The multimedia component 3008 includes a screen that provides an output interface between the device 3000 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can sense not only the boundaries of touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 3008 includes a front camera and / or a rear camera. When the device 3000 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.

[0327] The audio component 3010 is configured to output and / or input audio signals. For example, the audio component 3010 includes a microphone (MIC) that is configured to receive external audio signals when the device 3000 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 3004 or transmitted via the communication component 3016. In some embodiments, the audio component 3010 further includes a speaker for outputting audio signals.

[0328] The I / O interface 3012 provides an interface between the processing component 3002 and a peripheral interface module, which can be a keyboard, a click wheel, buttons, etc. These buttons can include but are not limited to: a home button, a volume button, a power button, and a lock button.

[0329] The sensor component 3014 includes one or more sensors for providing an assessment of the status of various aspects of the device 3000. For example, the sensor component 3014 can detect the on / off state of the device 3000, the relative positioning of components, such as the display and the keypad of the device 3000. The sensor component 3014 can also detect a change in the position of the device 3000 or a component of the device 3000, the presence or absence of user contact with the device 3000, the orientation or acceleration / deceleration of the device 3000, and a change in the temperature of the device 3000. The sensor component 3014 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 3014 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 3014 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0330] The communication component 3016 is configured to facilitate communication between the device 3000 and other devices in a wired or wireless manner. The device 3000 can access a communication standard-based wireless network, such as Wi-Fi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 3016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 3016 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0331] In an exemplary embodiment, the device 3000 can 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 for performing the above method.

[0332] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as the memory 3004 including instructions, and the above instructions can be executed by the processor 3020 of the device 3000 to complete the above method. For example, the non-transitory computer-readable storage medium can be a ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0333] Those skilled in the art will readily conceive of other implementations of the embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the embodiments of the present invention, which follow the general principles of the embodiments of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed in the embodiments of the present disclosure. The specification and embodiments are only to be considered exemplary, and the true scope and spirit of the embodiments of the present invention are pointed out by the following claims.

[0334] It should be understood that the embodiments of the present invention are not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the embodiments of the present invention is only limited by the appended claims.

Claims

1. An information transmission method, executed by a base station, wherein, the method includes: sending a cell handover command to a first type of user equipment (UE), wherein the cell handover command carries BWP configuration information indicating a bandwidth part (BWP) of a target cell, wherein the BWP of the target cell is determined based on the type of the first type of UE, and the BWP corresponding to the first type of UE indicated by the BWP configuration information includes: a first downlink initial BWP and a first uplink initial BWP; the method further includes: in response to the target cell being configured with a second downlink initial BWP for the first type of UE, determining the second downlink initial BWP as the first downlink initial BWP; in response to the target cell being configured with a third downlink initial BWP for a second type of UE, and the bandwidth of the third downlink initial BWP being less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, determining the third downlink initial BWP as the first downlink initial BWP; and, the method further includes: in response to the target cell being configured with a second uplink initial BWP for the first type of UE, determining the second uplink initial BWP as the first uplink initial BWP; in response to the target cell being configured with a third uplink initial BWP for a second type of UE, and the bandwidth of the third uplink initial BWP being less than or equal to the bandwidth of the uplink BWP supported by the first type of UE, determining the third uplink initial BWP as the first uplink initial BWP.

2. The method according to claim 1, wherein, the BWP corresponding to the first type of UE indicated by the BWP configuration information further includes at least one of the following: the first activated uplink BWP; the first activated downlink BWP, where the first activated downlink BWP is the first activated downlink BWP used by the first type of UE for service data transmission in the target cell; in response to determining that the first type of UE has a predetermined capability, there is a non-cell-defined synchronization signal block (NCD-SSB) in the first activated downlink BWP.

3. The method according to claim 1, wherein, the method further includes: receiving the BWP configuration information configured for the first type of UE and sent by the base station to which the target cell belongs.

4. The method according to claim 1, wherein, the method further includes: receiving information on the UE type sent by the first type of UE; sending a handover request to the base station to which the target cell belongs, the handover request carrying the information on the UE type of the first type of UE.

5. The method according to claim 1, wherein, there is no SSB in the first downlink initial BWP; or, there is an SSB in the first downlink initial BWP.

6. The method according to claim 1, wherein, in response to determining that the first type of UE has a predetermined capability, there is an NCD-SSB in the first downlink initial BWP indicated by the BWP configuration information.

7. The method according to claim 1, wherein, the method further includes at least one of the following: In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being greater than the bandwidth of the downlink BWP supported by the first type of UE, determine the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP; In response to the target cell not being configured with a third downlink initial BWP for the second type of UE, determine the fifth downlink initial BWP configured in the MIB corresponding to the target cell as the first downlink initial BWP.

8. An information transmission method, executed by a first type of user equipment UE, wherein, the method includes: Receiving a cell handover command from a base station, wherein the cell handover command carries BWP configuration information indicating a bandwidth part BWP corresponding to the first type of UE in the target cell, wherein the BWP of the target cell is determined by the base station based on the type of the first type of UE, and the BWP corresponding to the first type of UE indicated by the BWP configuration information includes: a first downlink initial BWP and a first uplink initial BWP; The method further includes: In response to the target cell being configured with a second downlink initial BWP for the first type of UE, determine the second downlink initial BWP as the first downlink initial BWP; In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, determine the third downlink initial BWP as the first downlink initial BWP; And, the method further includes: In response to the target cell being configured with a second uplink initial BWP for the first type of UE, determine the second uplink initial BWP as the first uplink initial BWP; In response to the target cell being configured with a third uplink initial BWP for the second type of UE, and the bandwidth of the third uplink initial BWP being less than or equal to the bandwidth of the uplink BWP supported by the first type of UE, determine the third uplink initial BWP as the first uplink initial BWP.

9. The method according to claim 8, wherein, the BWP corresponding to the first type of UE indicated by the BWP configuration information further includes at least one of the following: The first activated uplink BWP; The first activated downlink BWP, where the first activated downlink BWP is the first activated downlink BWP used by the first type of UE for service data transmission in the target cell; In response to determining that the first type of UE has a predetermined capability, there is a non-cell-defined synchronization signal block NCD-SSB within the first activated downlink BWP.

10. The method according to claim 8, wherein, the method further includes: Receiving the BWP configuration information configured for the first type of UE sent by the base station to which the target cell belongs.

11. The method according to claim 8, wherein, the method further includes: Send the information of the UE type of the first type of UE to the base station; the information of the UE type is carried in the handover request sent by the base station to which the serving cell belongs to the base station to which the target cell belongs.

12. The method according to claim 8, wherein, There is no SSB in the first downlink initial BWP; or, There is an SSB in the first downlink initial BWP.

13. The method according to claim 12, wherein, The method further includes: In response to there being no SSB in the first downlink initial BWP, perform synchronization and / or radio signal measurement through the downlink initial BWP having an SSB in the target cell.

14. The method according to claim 9, wherein, The method further includes: Send indication information to the base station indicating whether the first type of user equipment UE has a predetermined capability, wherein the predetermined capability is used for the base station to determine whether to indicate to the first type of user equipment UE the first activated downlink BWP having a non-cell-defined synchronization signal block NCD-SSB and / or the first downlink initial BWP having an NCD-SSB.

15. The method according to claim 8, wherein, The method further includes at least one of the following: In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being greater than the bandwidth of the downlink BWP supported by the first type of UE, determine the fourth downlink initial BWP configured in the corresponding master information block MIB of the target cell as the first downlink initial BWP; In response to the target cell not being configured with a third downlink initial BWP for the second type of UE, determine the fifth downlink initial BWP configured in the corresponding MIB of the target cell as the first downlink initial BWP.

16. An information transmission device, wherein, The device includes: A first transceiver module configured to send a cell handover command to a first type of user equipment UE, wherein the cell handover command carries BWP configuration information indicating the bandwidth part BWP of the target cell, wherein the BWP of the target cell is determined based on the type of the first type of UE, and the BWP corresponding to the first type of UE indicated by the BWP configuration information includes: a first downlink initial BWP and a first uplink initial BWP; A first processing module configured to: In response to the target cell being configured with a second downlink initial BWP for the first type of UE, determine the second downlink initial BWP as the first downlink initial BWP; In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, determine the third downlink initial BWP as the first downlink initial BWP; And, the first processing module is further configured to: In response to the target cell being configured with a second uplink initial BWP for the first type of UE, determining the second uplink initial BWP as the first uplink initial BWP; In response to the target cell being configured with a third uplink initial BWP for the second type of UE, and the bandwidth of the third uplink initial BWP being less than or equal to the bandwidth of the uplink BWP supported by the first type of UE, determining the third uplink initial BWP as the first uplink initial BWP.

17. The apparatus according to claim 16, wherein, The BWP corresponding to the first type of UE indicated by the BWP configuration information further includes at least one of the following: The first activated uplink BWP; The first activated downlink BWP, where the first activated downlink BWP is the first activated downlink BWP used by the first type of UE for service data transmission in the target cell; In response to determining that the first type of UE has a predetermined capability, the first activated downlink BWP has a non-cell-defined synchronization signal block NCD-SSB.

18. The apparatus according to claim 16, wherein, The first transceiver module is further configured to receive the BWP configuration information configured for the first type of UE and sent by the base station to which the target cell belongs.

19. The apparatus according to claim 16, wherein, The first transceiver module is further configured to receive information on the type of UE sent by the first type of UE; and send a handover request to the base station to which the target cell belongs, where the handover request carries information on the type of UE of the first type of UE.

20. The apparatus according to claim 16, wherein, The first downlink initial BWP does not have an SSB; or, The first downlink initial BWP has an SSB.

21. The apparatus according to claim 16, wherein, In response to determining that the first type of UE has a predetermined capability, the first downlink initial BWP indicated by the BWP configuration information has a non-cell-defined synchronization signal block NCD-SSB.

22. The apparatus according to claim 16, wherein, The first processing module is configured to at least one of the following: In response to the target cell being configured with a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP being greater than the bandwidth of the downlink BWP supported by the first type of UE, determining the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP; In response to the target cell not being configured with a third downlink initial BWP for the second type of UE, determining the fifth downlink initial BWP configured in the MIB corresponding to the target cell as the first downlink initial BWP.

23. An information transmission apparatus, wherein, The apparatus includes: The second transceiver module is configured to receive a cell handover command from a base station, where the cell handover command carries BWP configuration information indicating a bandwidth part BWP corresponding to a first type of user equipment UE in a target cell, where the BWP of the target cell is determined by the base station based on the type of the first type of UE, and the BWP corresponding to the first type of UE indicated by the BWP configuration information includes: a first downlink initial BWP and a first uplink initial BWP; The second processing module is configured to: In response to the target cell being configured with a second downlink initial BWP for the first type of UE, determine the second downlink initial BWP as the first downlink initial BWP; In response to the target cell being configured with a third downlink initial BWP for a second type of UE, and the bandwidth of the third downlink initial BWP being less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, determine the third downlink initial BWP as the first downlink initial BWP; And, the second processing module is further configured to: In response to the target cell being configured with a second uplink initial BWP for the first type of UE, determine the second uplink initial BWP as the first uplink initial BWP; In response to the target cell being configured with a third uplink initial BWP for a second type of UE, and the bandwidth of the third uplink initial BWP being less than or equal to the bandwidth of the uplink BWP supported by the first type of UE, determine the third uplink initial BWP as the first uplink initial BWP.

24. The apparatus according to claim 23, wherein, The BWP corresponding to the first type of UE indicated by the BWP configuration information further includes at least one of the following: The first activated uplink BWP; The first activated downlink BWP, where the first activated downlink BWP is the first activated downlink BWP used by the first type of UE for service data transmission in the target cell; In response to determining that the first type of UE has a predetermined capability, there is a non-cell-defined synchronization signal block NCD-SSB within the first activated downlink BWP.

25. The apparatus according to claim 23, wherein, The second transceiver module is further configured to receive the BWP configuration information configured for the first type of UE sent by the base station to which the target cell belongs.

26. The apparatus according to claim 23, wherein, The second transceiver module is further configured to send information about the UE type of the first type of UE to the base station; the information about the UE type is carried in a handover request sent by the base station to which the serving cell belongs to the base station to which the target cell belongs.

27. The apparatus according to claim 23, wherein, There is no SSB within the first downlink initial BWP; Or, There is an SSB within the first downlink initial BWP.

28. The apparatus according to claim 27, wherein, The second processing module is configured to: In response to the absence of an SSB in the first downlink initial BWP, synchronization and / or radio signal measurement are performed through a downlink initial BWP with an SSB in the target cell.

29. The apparatus according to claim 24, wherein, the second transceiver module is further configured to: send indication information to the base station indicating whether the first type of user equipment (UE) has a predetermined capability, where the predetermined capability is used for the base station to determine whether to indicate to the first type of UE the first activated downlink BWP having a non-cell-defined synchronization signal block (NCD-SSB) and / or the first downlink initial BWP having an NCD-SSB.

30. The apparatus according to claim 23, wherein, the second processing module is further configured to perform at least one of the following: in response to the target cell being configured with a third downlink initial BWP for the second type of UE and the bandwidth of the third downlink initial BWP being greater than the bandwidth of the downlink BWP supported by the first type of UE, determine the fourth downlink initial BWP configured in the master information block (MIB) corresponding to the target cell as the first downlink initial BWP; in response to the target cell not being configured with a third downlink initial BWP for the second type of UE, determine the fifth downlink initial BWP configured in the MIB corresponding to the target cell as the first downlink initial BWP.

31. A communication device, comprising a processor, a memory, and an executable program stored on the memory and executable by the processor, wherein, when the processor runs the executable program, it performs the steps of the information transmission method according to any one of claims 1 to 7, or 8 to 15.

32. A storage medium, on which an executable program is stored, wherein, when the executable program is executed by the processor, it implements the steps of the information transmission method according to any one of claims 1 to 7, or 8 to 15.

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