Information transmission method and device, communication equipment and storage medium

Abstract

Embodiments of the present disclosure relate to an information transmission method and apparatus, a communication device and a storage medium, a base station sending a cell switching command to a first type of user equipment (UE), the cell switching command carrying BWP configuration information indicating a bandwidth portion BWP of a target cell, the BWP configuration information comprising the first activated downlink BWP employed by the first type of UE in the target cell, and the BWP configuration information comprising the first activated downlink BWP employed by the first type of UE in the target cell; a non-cell-defined synchronization signal block (NCD-SSB) is arranged in the first activated downlink BWP.

Description

[0001] This disclosure is a divisional application of the Chinese application with an application date of March 28, 2022, application number 202280000955.X and invention name “Information Transmission Method, Device, Communication Equipment and Storage Medium”. Technical Field

[0002] The present application relates to the field of wireless communication technology but is not limited to the field of wireless communication technology, and in particular to information transmission methods, devices, communication equipment and storage media. Background Art

[0003] The current 3GPP standardization proposes a new terminal type called Reduced Capability UE (NR-lite or Redcap terminal). This type of device is similar to the IoT devices in Long Term Evolution (LTE). 5G-based NR-lite generally needs to meet the following requirements:

[0004] -Low cost and low complexity

[0005] - A certain degree of coverage enhancement

[0006] -Power saving

[0007] -Some terminals have 1RX (one receiving antenna) and some have 2RX (two receiving antennas). Summary of the Invention

[0008] In view of this, embodiments of the present disclosure provide an information transmission method, apparatus, communication device, and storage medium.

[0009] According to a first aspect of an embodiment of the present disclosure, a method for information transmission is provided, where the method is performed by a base station, and the method includes:

[0010] A cell handover command is sent 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 a type of the first type of UE.

[0011] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following:

[0012] The first activated downlink initial BWP;

[0013] The first activated uplink initial BWP;

[0014] First downlink initial BWP;

[0015] First uplink initial BWP.

[0016] In one embodiment,

[0017] The first activated downlink initial BWP does not have a synchronization signal block SSB;

[0018] or,

[0019] The first activated downlink initial BWP has SSB.

[0020] In one embodiment, in response to determining that the first type UE has a predetermined capability, the first activated downlink initial BWP indicated by the BWP configuration information contains a non-cell-defined synchronization signal block NCD-SSB.

[0021] In one embodiment,

[0022] The first downlink initial BWP does not have SSB;

[0023] or,

[0024] The first downlink initial BWP has SSB in it.

[0025] In one embodiment, in response to determining that the first type UE has a predetermined capability, the first downlink initial BWP indicated by the BWP configuration information has an NCD-SSB.

[0026] In one embodiment, the method further comprises at least one of the following:

[0027] 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;

[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 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;

[0029] 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 MIB corresponding to the target cell as the first downlink initial BWP;

[0030] In response to the target cell not being configured with a third downlink initial BWP for the second type UE, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is determined as the first downlink initial BWP.

[0031] In one embodiment, the method further comprises at least one of the following:

[0032] 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;

[0033] In response to the target cell being configured with a third uplink initial BWP for the second type 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 UE, the third uplink initial BWP is determined as the first uplink initial BWP.

[0034] According to a second aspect of an embodiment of the present disclosure, a method for information transmission is provided, where the method is performed by a base station, and the method includes:

[0035] A cell switching command is sent to a first type of user equipment UE, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP of the target cell, the BWP configuration information includes the first activated downlink BWP adopted by the first type UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

[0036] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following: a first downlink initial BWP or a first uplink initial BWP;

[0037] The method further comprises:

[0038] According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP;

[0039] According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP;

[0040] According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP;

[0041] According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

[0042] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information further includes a first activated uplink BWP.

[0043] In one embodiment, the method further includes: receiving the BWP configuration information configured for the first type UE, which is sent by the base station to which the target cell belongs.

[0044] In one embodiment, the method further includes: receiving UE type information sent by the first type UE; and sending a handover request to a base station to which the target cell belongs, wherein the handover request carries the UE type information of the first type UE.

[0045] In one embodiment, the first downlink initial BWP does not have an SSB; or the first downlink initial BWP has an SSB.

[0046] In one embodiment, the first downlink initial BWP indicated by the BWP configuration information contains an NCD-SSB or a cell-defined synchronization signal block CD-SSB.

[0047] In one embodiment, the method further includes: determining that the first downlink initial BWP does not have a cell definition synchronization signal block CD-SSB, and performing synchronization and / or wireless signal measurement through a downlink initial BWP having an NCD-SSB.

[0048] In one embodiment, the method further comprises at least one of the following:

[0049] According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP;

[0050] According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

[0051] According to a third aspect of an embodiment of the present disclosure, an information transmission method is provided, where the method is performed by a first type user equipment UE, wherein the method includes:

[0052] A cell switching command is received from a base station, wherein the cell switching command carries BWP configuration information indicating a bandwidth part BWP corresponding to the first type UE in a target cell, wherein the BWP of the target cell is determined by the base station based on the type of the first type UE.

[0053] In one embodiment, the BWP corresponding to the first type UE includes at least one of the following:

[0054] The first activated downlink initial BWP;

[0055] The first activated uplink initial BWP;

[0056] First downlink initial BWP;

[0057] First uplink initial BWP.

[0058] In one embodiment, the first activated downlink initial BWP does not have a synchronization signal block SSB;

[0059] or,

[0060] The first activated downlink initial BWP has SSB.

[0061] In one embodiment, the method further comprises:

[0062] In response to the first activated downlink initial BWP not having an SSB, synchronization and / or wireless signal measurement is performed through the downlink initial BWP having an SSB in the target cell.

[0063] In one embodiment, the first downlink initial BWP does not have an SSB;

[0064] or,

[0065] The first downlink initial BWP has SSB in it.

[0066] In one embodiment, the method further comprises:

[0067] In response to the first downlink initial BWP not having an SSB, synchronization and / or wireless signal measurement is performed through the downlink initial BWP having an SSB in the target cell.

[0068] In one embodiment, the method further comprises:

[0069] Sending 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 the first activated downlink initial BWP with a non-cell defined synchronization signal block NCD-SSB and / or the first downlink initial BWP with NCD-SSB to the first type of user equipment UE.

[0070] According to a fourth aspect of an embodiment of the present disclosure, an information transmission method is provided, where the method is performed by a first type user equipment UE, wherein the method includes:

[0071] Receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP corresponding to the first type UE in the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

[0072] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following: a first downlink initial BWP or a first uplink initial BWP;

[0073] The method further comprises:

[0074] According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP;

[0075] According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP;

[0076] According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP;

[0077] According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

[0078] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information further includes a first activated uplink BWP.

[0079] In one embodiment, the method further includes: receiving the BWP configuration information configured for the first type UE, which is sent from the base station to which the target cell belongs.

[0080] In one embodiment, the method further includes: sending UE type information of the first type UE to the base station; the UE type information is carried in a handover request sent by the base station of the serving cell to the base station of the target cell.

[0081] In one embodiment, the first downlink initial BWP does not have an SSB; or the first downlink initial BWP has an SSB.

[0082] In one embodiment, the first downlink initial BWP indicated by the BWP configuration information contains an NCD-SSB or a cell-defined synchronization signal block CD-SSB.

[0083] In one embodiment, the method further includes: determining that the first downlink initial BWP does not have a cell definition synchronization signal block CD-SSB, and performing synchronization and / or wireless signal measurement through a downlink initial BWP having an NCD-SSB.

[0084] In one embodiment, the method further includes: sending 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 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 to the first type of user equipment UE.

[0085] In one embodiment, the method further comprises at least one of the following:

[0086] According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP;

[0087] According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

[0088] According to a fifth aspect of an embodiment of the present disclosure, there is provided an information transmission device, wherein the device includes:

[0089] The first transceiver module is configured to send a cell switching command to a first type of user equipment UE, wherein the cell switching 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.

[0090] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following:

[0091] The first activated downlink initial BWP;

[0092] The first activated uplink initial BWP;

[0093] First downlink initial BWP;

[0094] First uplink initial BWP.

[0095] In one embodiment, the first activated downlink initial BWP does not have a synchronization signal block SSB;

[0096] or,

[0097] The first activated downlink initial BWP has SSB.

[0098] In one embodiment, in response to determining that the first type UE has a predetermined capability, the first activated downlink initial BWP indicated by the BWP configuration information contains a non-cell-defined synchronization signal block NCD-SSB.

[0099] In one embodiment, the first downlink initial BWP does not have an SSB;

[0100] or,

[0101] The first downlink initial BWP has SSB in it.

[0102] In one embodiment, in response to determining that the first type UE has a predetermined capability, the first downlink initial BWP indicated by the BWP configuration information contains a non-cell-defined synchronization signal block NCD-SSB.

[0103] In one embodiment, the apparatus further comprises a first processing module, wherein the first processing module is configured to do at least one of the following:

[0104] 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;

[0105] 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, determining the third downlink initial BWP as the first downlink initial BWP;

[0106] 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 MIB corresponding to the target cell as the first downlink initial BWP;

[0107] In response to the target cell not being configured with a third downlink initial BWP for the second type UE, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is determined as the first downlink initial BWP.

[0108] In one embodiment, the apparatus further comprises a first processing module, wherein the first processing module is configured to do at least one of the following:

[0109] 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;

[0110] In response to the target cell being configured with a third uplink initial BWP for the second type 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 UE, the third uplink initial BWP is determined as the first uplink initial BWP.

[0111] According to a sixth aspect of an embodiment of the present disclosure, there is provided an information transmission device, wherein the device includes:

[0112] The first transceiver module is configured to send a cell switching command to a first type of user equipment UE, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP of the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type of UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

[0113] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following: a first downlink initial BWP or a first uplink initial BWP;

[0114] The apparatus further includes a first processing module, wherein the first processing module is configured to:

[0115] According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP;

[0116] According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP;

[0117] According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP;

[0118] According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

[0119] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information further includes a first activated uplink BWP.

[0120] In one embodiment, the first transceiver module is further configured to receive the BWP configuration information configured for the first type UE and sent by the base station to which the target cell belongs.

[0121] In one embodiment, the first transceiver module is further configured to receive UE type information sent by the first type UE; and send a handover request to the base station to which the target cell belongs, wherein the handover request carries the UE type information of the first type UE.

[0122] In one embodiment, the first downlink initial BWP does not have an SSB; or the first downlink initial BWP has an SSB.

[0123] In one embodiment, the first downlink initial BWP indicated by the BWP configuration information contains an NCD-SSB or a cell-defined synchronization signal block CD-SSB.

[0124] In one embodiment, the first processing module is configured to: determine that there is no cell definition synchronization signal block CD-SSB in the first downlink initial BWP, and perform synchronization and / or wireless signal measurement through the downlink initial BWP with NCD-SSB.

[0125] In one embodiment, the first processing module is configured to do at least one of the following:

[0126] According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP;

[0127] According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

[0128] According to a seventh aspect of an embodiment of the present disclosure, there is provided an information transmission device, wherein the device includes:

[0129] The second transceiver module is configured to receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating a bandwidth part BWP corresponding to the first type of user equipment UE in a 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.

[0130] In one embodiment, the BWP corresponding to the first type UE includes at least one of the following:

[0131] The first activated downlink initial BWP;

[0132] The first activated uplink initial BWP;

[0133] First downlink initial BWP;

[0134] First uplink initial BWP.

[0135] In one embodiment, the first activated downlink initial BWP does not have a synchronization signal block SSB;

[0136] or,

[0137] The first activated downlink initial BWP has SSB.

[0138] In one embodiment, the apparatus further includes a second processing module, wherein the second processing module is configured to:

[0139] In response to the first activated downlink initial BWP not having an SSB, synchronization and / or wireless signal measurement is performed through the downlink initial BWP having an SSB in the target cell.

[0140] In one embodiment, the first downlink initial BWP does not have an SSB;

[0141] or,

[0142] The first downlink initial BWP has SSB in it.

[0143] In one embodiment, the apparatus further includes a second processing module, wherein the second processing module is configured to:

[0144] In response to the first downlink initial BWP not having an SSB, synchronization and / or wireless signal measurement is performed through the downlink initial BWP having an SSB in the target cell.

[0145] In one embodiment, the second transceiver module is further configured to:

[0146] Sending 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 the first activated downlink initial BWP with a non-cell defined synchronization signal block NCD-SSB and / or the first downlink initial BWP with NCD-SSB to the first type of user equipment UE.

[0147] According to an eighth aspect of an embodiment of the present disclosure, there is provided an information transmission device, wherein the device includes:

[0148] The second transceiver module is configured to receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP corresponding to the first type of user equipment UE in the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type of UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

[0149] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following: a first downlink initial BWP or a first uplink initial BWP;

[0150] The apparatus further includes a second processing module, wherein the second processing module is configured to:

[0151] According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP;

[0152] According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP;

[0153] According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP;

[0154] According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

[0155] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information further includes a first activated uplink BWP.

[0156] In one embodiment, the second transceiver module is further configured to receive the BWP configuration information configured for the first type UE, which is sent from the base station to which the target cell belongs.

[0157] In one embodiment, the second transceiver module is further configured to send UE type information of the first type UE to the base station; the UE type information is carried in the handover request sent by the base station of the serving cell to the base station of the target cell.

[0158] In one embodiment, the first downlink initial BWP does not have an SSB; or the first downlink initial BWP has an SSB.

[0159] In one embodiment, the first downlink initial BWP indicated by the BWP configuration information contains an NCD-SSB or a cell-defined synchronization signal block CD-SSB.

[0160] In one embodiment, the second processing module is configured to: determine that there is no cell definition synchronization signal block CD-SSB in the first downlink initial BWP, and perform synchronization and / or wireless signal measurement through the downlink initial BWP with NCD-SSB.

[0161] In one embodiment, 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, wherein the predetermined capability is used for the base station to determine whether to indicate 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 to the first type of user equipment UE.

[0162] In one embodiment, the second processing module is further configured to do at least one of the following:

[0163] According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP;

[0164] According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

[0165] According to the ninth aspect of an embodiment of the present disclosure, a communication device is provided, comprising a processor, a memory, and an executable program stored in the memory and capable of being run by the processor, wherein when the processor runs the executable program, the steps of the information transmission method described in any one of the first to fourth aspects are executed.

[0166] According to a tenth aspect of an embodiment of the present disclosure, a storage medium is provided, on which an executable program is stored, wherein when the executable program is executed by a processor, the steps of the information transmission method described in any one of the first to fourth aspects are implemented.

[0167] Embodiments of the present disclosure provide an information transmission method, apparatus, communication device, and storage medium. The information transmission method includes: a base station sending a cell handover command to a first-type user equipment (UE), wherein the cell handover command carries BWP configuration information indicating a bandwidth portion (BWP) of a target cell, wherein the BWP of the target cell is determined based on the type of the first-type UE. In this manner, the BWP of the target cell is configured for the UE based on the UE type, reducing situations where the configured BWP is unsupported by the UE, improving the success rate of cell handovers, and enhancing communication reliability.

[0168] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0169] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0170] Figure 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment;

[0171] Figure 2 is a flowchart illustrating an information transmission method according to an exemplary embodiment;

[0172] Figure 3 is a flowchart illustrating another information transmission method according to an exemplary embodiment;

[0173] Figure 4 is a flowchart illustrating another information transmission method according to an exemplary embodiment;

[0174] Figure 5 is a flowchart illustrating another information transmission method according to an exemplary embodiment;

[0175] Figure 6is a flowchart illustrating another information transmission method according to an exemplary embodiment;

[0176] Figure 7 is a flowchart illustrating another information transmission method according to an exemplary embodiment;

[0177] Figure 8 is a flowchart illustrating another information transmission method according to an exemplary embodiment;

[0178] Figure 9 is a block diagram of an information transmission device according to an exemplary embodiment;

[0179] Figure 10 is a block diagram of another information transmission device according to an exemplary embodiment;

[0180] Figure 11 The figure is a block diagram showing a device for information transmission according to an exemplary embodiment. DETAILED DESCRIPTION

[0181] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present invention.

[0182] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "the," and "the" 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 associated listed items.

[0183] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0184] Please refer to Figure 1 , which shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure. Figure 1As shown, the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: several terminals 11 and several base stations 12.

[0185] Terminal 11 may refer to a device that provides voice and / or data connectivity to a user. Terminal 11 may communicate with one or more core networks via a Radio Access Network (RAN). Terminal 11 may be an IoT terminal, such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an IoT terminal. For example, the terminal may be a fixed, portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment (UE). Alternatively, terminal 11 may be a device on an unmanned aerial vehicle (UAV). Alternatively, terminal 11 may be an in-vehicle device, such as a vehicle-mounted computer with wireless communication capabilities, or a wireless communication device connected to an external vehicle-mounted computer. Alternatively, the terminal 11 may also be a roadside device, for example, a street lamp, a signal lamp or other roadside device with a wireless communication function.

[0186] The base station 12 may be a network-side device in a wireless communication system. 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 be a 5G system, also known as a new radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next generation system of the 5G system. The access network in the 5G system may be referred to as NG-RAN (New Generation-Radio Access Network). Alternatively, an MTC system.

[0187] Among them, the base station 12 can be an evolved base station (eNB) adopted in a 4G system. Alternatively, the base station 12 can also be a base station (gNB) adopting a centralized distributed architecture in a 5G system. When the base station 12 adopts a centralized distributed architecture, it usually includes a centralized unit (CU) and at least two distributed units (DU). The centralized unit is provided with a protocol stack of a packet data convergence protocol (PDCP) layer, a radio link layer control protocol (RLC) layer, and a media access control (MAC) layer; the distributed unit is provided with a physical (PHY) layer protocol stack. The embodiment of the present disclosure does not limit the specific implementation method of the base station 12.

[0188] A wireless connection can be established between the base station 12 and the terminal 11 via a wireless air interface. In different implementations, 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, for example, the wireless air interface is a new air interface; or, the wireless air interface can also be a wireless air interface based on the next generation mobile communication network technology standard of 5G.

[0189] In some embodiments, E2E (End to End) connections can also be established between terminals 11. For example, in vehicle-to-everything (V2X) communication scenarios such as V2V (vehicle to vehicle), V2I (vehicle to infrastructure), and V2P (vehicle to pedestrian).

[0190] In some embodiments, the wireless communication system may further include a network management device 13 .

[0191] Several base stations 12 are respectively connected to a network management device 13. The network management device 13 may be a core network device in a 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 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). The embodiments of the present disclosure do not limit the implementation form of the network management device 13.

[0192] The execution entities 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 equipment, such as access network equipment such as base stations, and core networks.

[0193] In the related art, a downlink initial BWP can be configured separately for Redcap UE in SIB1: Redcap-specific initial DL BWP configuration, which is used for receiving Random Access Response (RAR) and can also be used for paging, etc.

[0194] For FR1, the dedicated downlink initial BWP can be configured without CD-SSB and CORESET#0. In FR1, if the dedicated downlink initial BWP is configured for random access and not for idle / inactive paging, then the Redcap UE does not expect the dedicated downlink initial BWP to have SSB / CORESET#0 / SIB. In this case, the access network (RAN1) 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.

[0195] For FR2, the dedicated downlink initial BWP can be configured to not have CD-SSB. In FR2, if the dedicated downlink initial BWP is configured for random access and not for idle / inactive paging, then the Redcap UE does not expect the dedicated downlink initial BWP to have SSB / CORESET#0 / SIB. In this case, the access network (RAN1) considers the Redcap UE to assume 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.

[0196] In the uplink direction, an uplink initial BWP is also configured separately in SIB1: RedCap-specific initial UL BWP configuration, which is used for random access.

[0197] However, when a Redcap UE performs a cell handover, the initial BWP it uses will be the one sent to it by the target base station in the handover command. The relevant art has not yet defined how to configure the downlink initial BWP for the handover process. Furthermore, if the initial BWP used by a regular UE is directly configured for a Redcap UE, the Redcap UE may not be able to support it. This is because the bandwidth of the initial BWP used by the regular UE may be outside the bandwidth range supported by the Redcap UE, which means that the Redcap UE may not be able to receive the corresponding configuration of the initial BWP.

[0198] Therefore, how to configure BWP for Redcap UE during the handover process to meet the Redcap UE's demand for BWP and improve the communication reliability of Redcap UE is an urgent problem to be solved.

[0199] like Figure 2 As shown, this exemplary embodiment provides an information transmission method, which can be executed by a base station of a cellular mobile communication system, including:

[0200] Step 201: Send 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.

[0201] When a UE switches from a serving cell to a target cell, the base station of the serving cell can send a handover command to the UE, instructing it to switch to the target cell. The serving cell and the target cell can be generated by the same base station or different base stations. The base station of the serving cell can request and allocate resources from the base station of the target cell.

[0202] The first type UE may be a UE in an RRC connected state. The signal reception capability of the first type UE is lower than that of the second type UE. That is, the first type UE may have a lower signal reception capability than the second type UE. For example, the first type UE has fewer receiving antennas than the second type UE. The first type UE has a weaker BWP support capability. For example, the bandwidth of the BWP supported by the first type UE is 20 MHz in FR1 and 100 MHz in FR2. The bandwidth of the BWP supported by the second type UE is greater than the bandwidth of the BWP supported by the first type UE.

[0203] Exemplarily, the first type UE may be a Redcap type UE introduced in 3GPP Release 17 (R17). The first type UE may also be an enhanced Redcap type UE introduced in a subsequent 3GPP Release version; for example, the first type UE may be a Redcap type UE. The second type 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 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 appropriate for the UE type based on the UE type. For example, if the UE being handed over is a first-type UE, a BWP with a narrower bandwidth may be configured for the first-type UE so that the configured BWP meets the support capabilities of the first-type UE. If the UE being handed over is a second-type UE, a BWP with a wider bandwidth may be configured for the second-type UE.

[0206] In one embodiment, a UE can report its own UE type. When the serving cell base station sends a handover request to the target cell base station, the handover request can include the UE type. The target cell base station can configure the UE's BWP based on the UE type. For example, the UE can report its own UE type to the serving cell base station, and during the handover process, the serving cell base station can indicate the UE type to the target cell base station.

[0207] After the base station to which the target cell belongs determines the BWP to be 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 can 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 UE type, the UE can support the BWP.

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

[0210] In one embodiment,

[0211] The BWP corresponding to the first type of UE indicated by the BWP configuration information includes at least one of the following:

[0212] The first activated downlink initial BWP;

[0213] The first activated uplink initial BWP;

[0214] First downlink initial BWP;

[0215] First uplink initial BWP.

[0216] The first activated downlink initial BWP may be the initial activated downlink BWP used by a first type UE, such as a Redcap UE, when performing service data transmission within the target cell. A second type UE, such as an eMMB UE, may support a BWP with a bandwidth greater than the bandwidth of the BWP supported by the first type UE. Therefore, the bandwidth of the first activated downlink initial BWP configured by the base station for the first type UE is less than or equal to the bandwidth of the first activated downlink initial BWP configured for the second type UE. In this way, the bandwidth of the first activated downlink initial BWP configured for the first type UE meets the support capability of the first type UE.

[0217] The first activated uplink initial BWP may be the initial activated uplink BWP used by a first type UE, such as a Redcap UE, when performing service data transmission within the target cell. A second type UE, such as an eMMB UE, may support a BWP with a bandwidth greater than the bandwidth of the BWP supported by the first type UE. Therefore, the bandwidth of the first activated uplink initial BWP configured by the base station for the first type UE is less than or equal to the bandwidth of the first activated uplink initial BWP configured for the second type UE. In this way, the bandwidth of the first activated uplink initial BWP configured for the first type UE can meet the support capability of the first type UE.

[0218] The first downlink initial BWP may be a BWP for random access by the first type UE in the target cell. For example, the first downlink initial BWP may be a BWP for the first type UE to receive a random access response (RAR, Random Access Response) in the target cell. The first downlink initial BWP may also be a BWP for the first type UE to receive paging in the target cell. For example, the first downlink initial BWP may be initialDownlinkBWP-RedCap configured using DownlinkConfigCommon. The base station may 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 UE, so that the bandwidth of the first downlink initial BWP can meet the support capability of the first type UE.

[0219] Exemplarily, the first downlink initial BWP may be a RedCap UE-specific downlink initial BWP (RedCap-specific initial DL BWP).

[0220] The first uplink initial BWP may be a BWP used by a first-type UE for random access in the target cell. The base station may 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 UE, so that the bandwidth of the first uplink initial BWP meets the support capability of the first-type UE.

[0221] Exemplarily, the first uplink initial BWP may be a RedCap-specific initial UL BWP.

[0222] In this way, the BWP of the target cell to be handed over is configured for the UE based on the UE type, thereby reducing the situation where the configured BWP cannot be supported by the UE, improving the success rate of cell handover, and improving communication reliability.

[0223] In one embodiment,

[0224] The first activated downlink initial BWP does not have a synchronization signal block SSB;

[0225] or,

[0226] The first activated downlink initial BWP has SSB.

[0227] The first activated downlink initial BWP configured for the first type of UE may not have an SSB. Here, the SSB may include: a cell-defining SSB (CD-SSB) or a non-cell-defining SSB (NCD-SSB). Among them, the CD-SSB has a 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 for signal measurement. The NCD-SSB cannot be used to determine the cell, and the NCD-SSB can be used for synchronization or for signal measurement.

[0228] In one embodiment, in response to the first activated downlink initial BWP not having an SSB, the first type UE performs synchronization and / or radio signal measurement through the downlink initial BWP having an SSB in the target cell.

[0229] The first activated downlink initial BWP configured for the first type of UE does not have an SSB. The first type of UE can use the downlink initial BWP with an SSB for synchronization. For example, the first type of UE can decode the MIB in the target cell and obtain the downlink initial BWP configured by the MIB for synchronization and / or radio signal measurement, for example, using a dedicated downlink initial BWP configured by the MIB for synchronization and / or measurement; alternatively, 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.

[0230] The first activated downlink initial BWP configured for the first type UE may include an SSB. Here, the SSB may include a CD-SSB or an NCD-SSB. The first type UE may perform synchronization and / or radio signal measurement based on the SSB in the first activated downlink initial BWP.

[0231] The first activated downlink initial BWP having SSB may include: the first activated downlink initial BWP having CD-SSB, or the first activated downlink initial BWP having NCD-SSB.

[0232] If the first activated downlink initial BWP does not have an SSB, synchronization and measurement during the handover process can be accelerated, thereby optimizing performance.

[0233] In one embodiment, in response to determining that the first type UE has a predetermined capability, the first activated downlink initial BWP indicated by the BWP configuration information contains a non-cell-defined synchronization signal block NCD-SSB.

[0234] The base station may configure the first activated downlink initial BWP with NCD-SSB for the first type UE based on the predetermined capability of the first type UE.

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

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

[0237] In one embodiment,

[0238] The first downlink initial BWP does not have SSB;

[0239] or,

[0240] The first downlink initial BWP has SSB in it.

[0241] The first downlink initial BWP may not have an SSB. Here, the SSB may include: CD-SSB or NCD-SSB. The CD-SSB has System Information Block 1 (SIB), i.e., 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 the cell, and the NCD-SSB can be used for synchronization or signal measurement.

[0242] In one embodiment, in response to the first downlink initial BWP not having an SSB, the first type UE performs synchronization and / or radio signal measurement with the target cell through the downlink initial BWP having an SSB in the target cell.

[0243] In this case, the extra transceiver conversion time is required, which increases the synchronization and random access delay during the handover process. The absence of SSB in the first downlink initial BWP can speed up synchronization and measurement during the handover process and optimize performance.

[0244] The first downlink initial BWP does not have an SSB, and the first type of UE may use the downlink initial BWP with the SSB for synchronization. For example, the first type of UE may decode the MIB in the target cell and obtain the downlink initial BWP configured by the MIB for synchronization, such as synchronizing using a dedicated downlink initial BWP configured by the MIB; alternatively, the first type of UE may use the downlink initial BWP used by the second type of UE for synchronization and / or radio signal measurement.

[0245] The first downlink initial BWP may include an SSB. Here, the SSB may include a CD-SSB or an NCD-SSB. The first type UE may perform synchronization and / or radio signal measurement based on the SSB within the first downlink initial BWP.

[0246] The first downlink initial BWP having an SSB may include: the first downlink initial BWP having a CD-SSB, or the first downlink initial BWP having an NCD-SSB.

[0247] In one embodiment, in response to determining that the first type UE has a predetermined capability, the first downlink initial BWP indicated by the BWP configuration information has an NCD-SSB.

[0248] The base station may configure a first downlink initial BWP with NCD-SSB for the first type UE based on the predetermined capability of the first type UE.

[0249] In one embodiment, the predetermined capabilities may be obtained by the base station of the target cell (target base station) from the base station of the serving cell (original base station). For example, the predetermined capabilities of the first type UE may be included in a handover request sent by the original base station to the target base station. The predetermined capabilities may be obtained by the base station of the target cell (target base station) from the core network. The first type UE may send its predetermined capabilities to the original base station and / or the core network when connecting to the original base station.

[0250] The predetermined capability may include the requirement of the first type UE for the first downlink initial BWP. For example, the predetermined capability may be: the first type UE supports FG 6-1, but expects the BWP to include NCD-SSB and not include CORESET#0 / SIB.

[0251] like Figure 3 As shown, this exemplary embodiment provides an information transmission method, which can be performed by a base station of a cellular mobile communication system, including at least one of the following:

[0252] Step 301a: 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;

[0253] 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, determining the third downlink initial BWP as the first downlink initial BWP;

[0254] 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, determining the fourth downlink initial BWP configured in the MIB corresponding to the target cell as the first downlink initial BWP;

[0255] Step 301d: In response to the target cell not being configured with the third downlink initial BWP for the second type UE, determine the fifth downlink initial BWP configured in the MIB corresponding to the target cell as the first downlink initial BWP.

[0256] Step 301a, step 301b, step 301c, and / or step 301d may be implemented separately or in combination with step 201.

[0257] If a dedicated second downlink initial BWP is configured for the first type of UE in the target cell, for example, a dedicated downlink initial BWP (RedCap-specific initial DL BWP) is configured for the Redcap UE, 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 configured by the base station in SIB1 specifically for the Redcap UE. The dedicated downlink initial BWP can be used for the initial random access of the UE, and can also be used for the cell handover of the UE. Here, the network device may include access network equipment and / or core network equipment, etc.

[0258] If in the target cell, a dedicated second downlink initial BWP is not configured for the first type UE, and a third downlink initial BWP is configured for the second type UE, such as the eMMB UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth supported by the first type UE, such as the bandwidth supported by the Redcap UE (FR1 is 20M, FR2 is 100M), the network device directly determines the third downlink initial BWP as the first downlink initial BWP, and indicates the first type UE through the BWP configuration information during cell switching; the first type UE will use the initial BWP for random access during switching.

[0259] If in the target cell, a dedicated second downlink initial BWP is not configured for the first type UE, and a third downlink initial BWP is configured for the second type UE, such as an eMMB UE, and the bandwidth of the third downlink initial BWP is greater than that of the first type UE, such as the bandwidth supported by the Redcap UE (FR1 is 20M, FR2 is 100M), the network device directly determines the fourth downlink initial BWP configured by the MIB as the first downlink initial BWP, and indicates the first type UE through the BWP configuration information during cell switching. The first type UE will use the initial BWP for random access during switching, or can obtain the fourth downlink initial BWP configured by the MIB for random access within the target cell by decoding the MIB.

[0260] If the target cell is configured with a third downlink initial BWP for a second type of UE, such as an eMMB UE, and no dedicated downlink initial BWP is configured for the first type of UE, then the network device directly determines the fourth downlink initial BWP configured by the MIB as the first downlink initial BWP, and indicates the first type of UE through the BWP configuration information during cell switching. The first type of UE will use the initial BWP for random access during switching, or can obtain the fifth downlink initial BWP configured by the MIB for random access within the target cell by decoding the MIB.

[0261] In one embodiment, the protocol specifies that access must be ensured as quickly as possible during the handover process, so an SSB can be configured in the first downlink initial BWP. In this case, the downlink initial BWP configured for regular users or the downlink initial BWP configured by the MIB can be configured for the terminal as access during handover. Because this type of initial BWP usually has CD-SSB

[0262] In one embodiment, regardless of whether a dedicated second downlink initial BWP is configured for the first type UE in the target cell, if the target cell is configured with a third downlink initial BWP for the second type UE, such as an eMMB UE, and the bandwidth of the third downlink initial BWP is less than or equal to the first type UE, such as the bandwidth supported by the Redcap UE (FR1 is 20M, FR2 is 100M), the network device directly determines the third downlink initial BWP as the first downlink initial BWP, and indicates it to the first type UE through the BWP configuration information when the cell is switched; the first type UE will use the initial BWP for random access when switching.

[0263] At this time, regardless of whether a dedicated second downlink initial BWP is configured for the first type UE in the target cell, if the target cell is for the second type UE, such as eMMB UE, etc., which is configured with a third downlink initial BWP, and the bandwidth of the third downlink initial BWP is greater than that of the first type UE, such as the bandwidth supported by Redcap UE (FR1 is 20M, FR2 is 100M), the network device directly determines the fourth downlink initial BWP configured by the MIB as the first downlink initial BWP, and indicates the first type UE through the BWP configuration information during cell switching. The first type UE will use the initial BWP for random access during switching, or can obtain the fourth downlink initial BWP configured by the MIB for random access by decoding the MIB in the target cell.

[0264] like Figure 4 As shown, this exemplary embodiment provides an information transmission method, which can be performed by a base station of a cellular mobile communication system, including at least one of the following:

[0265] Step 401a: 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;

[0266] Step 401b: In response to the target cell being configured with a third uplink initial BWP for the second type 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 UE, the third uplink initial BWP is determined as the first uplink initial BWP.

[0267] Step 401a and / or step 401b may be implemented independently, or may be implemented in combination with step 301a, step 301b, step 301c, step 301d, and / or step 201.

[0268] If a dedicated second uplink initial BWP is configured for the first type of UE in the target cell, for example, a RedCap-specific initial UL BWP is configured for the RedCap UE, the network device directly determines the second uplink initial BWP as the first uplink initial BWP and indicates this to the first type of UE through BWP configuration information. The first type of UE will use this initial BWP for random access during handover.

[0269] If the target cell is a second type UE, such as an eMMB UE, configured with a third uplink initial BWP, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth supported by the first type UE, such as the Redcap UE, the network device directly determines the third uplink initial BWP as the first uplink initial BWP, and indicates the first type UE through the BWP configuration information during cell switching; the first type UE will use the initial BWP for random access during switching.

[0270] like Figure 5 As shown, this exemplary embodiment provides an information transmission method, which can be executed by a UE of a cellular mobile communication system, including at least one of the following:

[0271] Step 501: Receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP corresponding to the first type 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 UE.

[0272] When a UE switches from a serving cell to a target cell, the base station of the serving cell can send a handover command to the UE, instructing it to switch to the target cell. The serving cell and the target cell can be generated by the same base station or different base stations. The base station of the serving cell can request and allocate resources from the base station of the target cell.

[0273] The first type UE may be a UE in an RRC connected state. The signal reception capability of the first type UE is lower than that of the second type UE, that is, the first type UE may have a lower signal reception capability than the second type UE. For example, the first type UE has fewer receiving antennas than the second type UE. The first type UE has a weaker BWP support capability. For example, the bandwidth of the BWP supported by the first type UE is 20 MHz in FR1 and 100 MHz in FR2. The bandwidth of the BWP supported by the second type UE is greater than the bandwidth of the BWP supported by the first type UE.

[0274] Exemplarily, the first type UE may be a Redcap type UE introduced in 3GPP Release 17 (R17). The first type UE may also be an enhanced Redcap type UE introduced in a subsequent 3GPP Release version; for example, the first type UE may be a Redcap type UE. The second type UE may be an eMMB type UE.

[0275] 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: the initial BWP for accessing the target cell, and / or the first activated BWP for transmitting service data, etc.

[0276] 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 appropriate for the UE type based on the UE type. For example, if the UE being handed over is a first-type UE, a BWP with a narrower bandwidth may be configured for the first-type UE so that the configured BWP meets the support capabilities of the first-type UE. If the UE being handed over is a second-type UE, a BWP with a wider bandwidth may be configured for the second-type UE.

[0277] In one embodiment, a UE can report its own UE type. When the serving cell base station sends a handover request to the target cell base station, the handover request can include the UE type. The target cell base station can configure the UE's BWP based on the UE type. For example, the UE can report its own UE type to the serving cell base station, and during the handover process, the serving cell base station can indicate the UE type to the target cell base station.

[0278] After the base station to which the target cell belongs determines the BWP to be 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.

[0279] After receiving the BWP configuration information, the UE can 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 UE type, the UE can support the BWP.

[0280] In this way, the BWP of the target cell to be handed over is configured for the UE based on the UE type, thereby reducing the situation where the configured BWP cannot be supported by the UE, improving the success rate of cell handover, and improving communication reliability.

[0281] In one embodiment, the BWP corresponding to the first type UE includes at least one of the following:

[0282] The first activated downlink initial BWP;

[0283] The first activated uplink initial BWP;

[0284] First downlink initial BWP;

[0285] First uplink initial BWP.

[0286] The first activated downlink initial BWP may be the initial activated downlink BWP used by a first type UE, such as a Redcap UE, when performing service data transmission within the target cell. A second type UE, such as an eMMB UE, may support a BWP with a bandwidth greater than the bandwidth of the BWP supported by the first type UE. Therefore, the bandwidth of the first activated downlink initial BWP configured by the base station for the first type UE is less than or equal to the bandwidth of the first activated downlink initial BWP configured for the second type UE. In this way, the bandwidth of the first activated downlink initial BWP configured for the first type UE meets the support capability of the first type UE.

[0287] The first activated uplink initial BWP may be the initial activated uplink BWP used by a first type UE, such as a Redcap UE, when performing service data transmission within the target cell. A second type UE, such as an eMMB UE, may support a BWP with a bandwidth greater than the bandwidth of the BWP supported by the first type UE. Therefore, the bandwidth of the first activated uplink initial BWP configured by the base station for the first type UE is less than or equal to the bandwidth of the first activated uplink initial BWP configured for the second type UE. In this way, the bandwidth of the first activated uplink initial BWP configured for the first type UE can meet the support capability of the first type UE.

[0288] The first downlink initial BWP may be a BWP for random access by the first type UE in the target cell. For example, the first downlink initial BWP may be a BWP for the first type UE to receive a random access response (RAR, Random Access Response) in the target cell. The first downlink initial BWP may also be a BWP for the first type UE to receive paging in the target cell. For example, the first downlink initial BWP may be initialDownlinkBWP-RedCap configured using DownlinkConfigCommon. The base station may 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 UE, so that the bandwidth of the first downlink initial BWP can meet the support capability of the first type UE.

[0289] Exemplarily, the first downlink initial BWP may be a RedCap UE-specific downlink initial BWP (RedCap-specific initial DL BWP).

[0290] The first uplink initial BWP may be a BWP used by a first-type UE for random access in the target cell. The base station may 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 UE, so that the bandwidth of the first uplink initial BWP meets the support capability of the first-type UE.

[0291] Exemplarily, the first uplink initial BWP may be a RedCap-specific initial UL BWP.

[0292] In this way, the BWP of the target cell to be handed over is configured for the UE based on the UE type, thereby reducing the situation where the configured BWP cannot be supported by the UE, improving the success rate of cell handover, and improving communication reliability.

[0293] In one embodiment,

[0294] The first activated downlink initial BWP does not have a synchronization signal block SSB;

[0295] or,

[0296] The first activated downlink initial BWP has SSB.

[0297] The first activated downlink initial BWP configured for the first type of UE may not have an SSB. Here, the SSB may include: a cell-defining SSB (CD-SSB) or a non-cell-defining SSB (NCD-SSB). Among them, the CD-SSB has a 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 for signal measurement. The NCD-SSB cannot be used to determine the cell, but can be used for synchronization or for signal measurement.

[0298] The first activated downlink initial BWP configured for a first type UE may include an SSB. Here, the SSB may include a CD-SSB or an NCD-SSB. The first type UE may perform synchronization and / or radio signal measurements based on the SSB within the first activated downlink initial BWP. The inclusion of the SSB facilitates expediting synchronization and random access during handover.

[0299] The first activated downlink initial BWP having SSB may include: the first activated downlink initial BWP having CD-SSB, or the first activated downlink initial BWP having NCD-SSB.

[0300] like Figure 6 As shown, this exemplary embodiment provides an information transmission method, which can be executed by a UE of a cellular mobile communication system, including:

[0301] Step 601: In response to the first activated downlink initial BWP not having an SSB, synchronization and / or radio signal measurement is performed through the downlink initial BWP having an SSB in the target cell.

[0302] Step 601 can be implemented alone or in combination with step 501.

[0303] The first activated downlink initial BWP configured for the first type of UE does not have an SSB. The first type of UE can use the downlink initial BWP with an SSB for synchronization. For example, the first type of UE can decode the MIB in the target cell and obtain the downlink initial BWP configured by the MIB for synchronization and / or radio signal measurement, for example, using a dedicated downlink initial BWP configured by the MIB for synchronization and / or measurement; alternatively, 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.

[0304] In one embodiment, in response to determining that the first type of UE has a predetermined capability, the first activated downlink initial BWP indicated by the BWP configuration information includes a non-cell-defined synchronization signal block (NCD-SSB). Including the NCD-SSB facilitates the terminal to complete synchronization and random access as quickly as possible during the handover process.

[0305] The base station may configure the first activated downlink initial BWP with NCD-SSB for the first type UE based on the predetermined capability of the first type UE.

[0306] In one embodiment, the predetermined capabilities may be obtained by the base station of the target cell (target base station) from the base station of the serving cell (original base station). For example, the predetermined capabilities of the first type UE may be included in a handover request sent by the original base station to the target base station. The predetermined capabilities may be obtained by the base station of the target cell (target base station) from the core network. The first type UE may send its predetermined capabilities to the original base station and / or the core network when connecting to the original base station.

[0307] The predetermined capability may include the requirement of the first type UE for the first activated downlink initial BWP. For example, the predetermined capability may be: the first type UE supports FG 6-1, but expects the BWP to include NCD-SSB and not include CORESET#0 / SIB, etc.

[0308] In one embodiment,

[0309] The first downlink initial BWP does not have SSB;

[0310] or,

[0311] The first downlink initial BWP has SSB in it.

[0312] The first downlink initial BWP may not have an SSB. Here, the SSB may include: CD-SSB or NCD-SSB. The CD-SSB has System Information Block 1 (SIB), i.e., 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 the cell, and the NCD-SSB can be used for synchronization or signal measurement.

[0313] The first downlink initial BWP may be limited to having an SSB. The inclusion of an SSB facilitates the terminal to complete synchronization and random access as quickly as possible during a handover. Here, the SSB may include a CD-SSB or an NCD-SSB. The first type UE may complete synchronization and / or radio signal measurement based on the SSB within the first downlink initial BWP.

[0314] The first downlink initial BWP having an SSB may include: the first downlink initial BWP having a CD-SSB, or the first downlink initial BWP having an NCD-SSB.

[0315] like Figure 7 As shown, this exemplary embodiment provides an information transmission method, which can be executed by a UE of a cellular mobile communication system, including:

[0316] Step 701: In response to the first downlink initial BWP not having an SSB, synchronization and / or radio signal measurement is performed through the downlink initial BWP having an SSB in the target cell.

[0317] Step 701 may be implemented alone or in combination with step 501 and / or step 601 .

[0318] The first downlink initial BWP does not have an SSB, and the first type of UE may use the downlink initial BWP with the SSB for synchronization. For example, the first type of UE may decode the MIB in the target cell and obtain the downlink initial BWP configured by the MIB for synchronization, such as synchronizing using a dedicated downlink initial BWP configured by the MIB; alternatively, the first type of UE may use the downlink initial BWP used by the second type of UE for synchronization and / or radio signal measurement.

[0319] like Figure 8 As shown, this exemplary embodiment provides an information transmission method, which can be executed by a UE of a cellular mobile communication system, including:

[0320] Step 801: Send indication information to the base station to indicate 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 the first activated downlink initial BWP with a non-cell defined synchronization signal block NCD-SSB and / or the first downlink initial BWP with NCD-SSB to the first type of user equipment UE.

[0321] Step 801 may be implemented alone or in combination with step 501 and / or step 601 and / or step 701 .

[0322] In one embodiment, the predetermined capabilities may be obtained by the base station of the target cell (target base station) from the base station of the serving cell (original base station). For example, the predetermined capabilities of the first type UE may be included in a handover request sent by the original base station to the target base station. The predetermined capabilities may be obtained by the base station of the target cell (target base station) from the core network. The first type UE may send its predetermined capabilities to the original base station and / or the core network when connecting to the original base station.

[0323] The predetermined capability may include requirements of the first type UE for the first activated downlink initial BWP and / or the first downlink initial BWP. For example, the predetermined capability may include: the first type UE supports FG 6-1, but expects the first activated downlink initial BWP and / or the first downlink initial BWP to include NCD-SSB and not include CORESET#0 / SIB, etc.

[0324] In some embodiments, the present disclosure provides an information transmission method, which is performed by a base station, wherein the method includes:

[0325] A cell switching command is sent to a first type of user equipment UE, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP of the target cell, the BWP configuration information includes the first activated downlink BWP adopted by the first type UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

[0326] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following: a first downlink initial BWP or a first uplink initial BWP;

[0327] The method further comprises:

[0328] According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP;

[0329] According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP;

[0330] According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP;

[0331] According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

[0332] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information further includes a first activated uplink BWP.

[0333] In one embodiment, the method further includes: receiving the BWP configuration information configured for the first type UE, which is sent by the base station to which the target cell belongs.

[0334] In one embodiment, the method further includes: receiving UE type information sent by the first type UE; and sending a handover request to a base station to which the target cell belongs, wherein the handover request carries the UE type information of the first type UE.

[0335] In one embodiment, the first downlink initial BWP does not have an SSB; or the first downlink initial BWP has an SSB.

[0336] In one embodiment, the first downlink initial BWP indicated by the BWP configuration information contains an NCD-SSB or a cell-defined synchronization signal block CD-SSB.

[0337] In one embodiment, the method further includes: determining that the first downlink initial BWP does not have a cell definition synchronization signal block CD-SSB, and performing synchronization and / or wireless signal measurement through a downlink initial BWP having an NCD-SSB.

[0338] In one embodiment, the method further comprises at least one of the following:

[0339] According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP;

[0340] According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

[0341] In some embodiments, an embodiment of the present disclosure provides an information transmission method, which is performed by a first type user equipment UE, wherein the method includes:

[0342] Receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP corresponding to the first type UE in the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

[0343] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following: a first downlink initial BWP or a first uplink initial BWP;

[0344] The method further comprises:

[0345] According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP;

[0346] According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP;

[0347] According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP;

[0348] According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

[0349] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information further includes a first activated uplink BWP.

[0350] In one embodiment, the method further includes: receiving the BWP configuration information configured for the first type UE, which is sent from the base station to which the target cell belongs.

[0351] In one embodiment, the method further includes: sending UE type information of the first type UE to the base station; the UE type information is carried in a handover request sent by the base station of the serving cell to the base station of the target cell.

[0352] In one embodiment, the first downlink initial BWP does not have an SSB; or the first downlink initial BWP has an SSB.

[0353] In one embodiment, the first downlink initial BWP indicated by the BWP configuration information contains an NCD-SSB or a cell-defined synchronization signal block CD-SSB.

[0354] In one embodiment, the method further includes: determining that the first downlink initial BWP does not have a cell definition synchronization signal block CD-SSB, and performing synchronization and / or wireless signal measurement through a downlink initial BWP having an NCD-SSB.

[0355] In one embodiment, the method further includes: sending 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 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 to the first type of user equipment UE.

[0356] In one embodiment, the method further comprises at least one of the following:

[0357] According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP;

[0358] According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

[0359] The following provides a specific example in combination with any of the above embodiments:

[0360] 1. A method for configuring the initial BWP for a specific type of terminal during handover;

[0361] a) The specific type of terminal is the Redcap type terminal introduced in R17;

[0362] b) The specific terminal type is the enhanced Redcap terminal introduced in subsequent versions;

[0363] c) The target base station obtains from the handover request that the user type is a specific type of terminal;

[0364] 2. It is agreed that for connected users of a specific type of terminal, the first active downlink initial BWP specified during handover may not include SSB (CD-SSB or NCD-SSB):

[0365] a) If the network device includes the first activation of the downlink initial BWP in the handover command, the downlink initial BWP may not be configured with CD-SSB or NCD-SSB;

[0366] The terminal can use the downlink initial BWP with SSB for synchronization, such as the downlink initial BWP configured in the MIB;

[0367] Or the downlink initial BWP used by normal users;

[0368] 3. It is agreed that for connected users of a specific type of terminal, the initial downlink BWP specified for the first activation during handover must include SSB (CD-SSB or NCD-SSB):

[0369] a) If the network device includes the first activation of the downlink initial BWP in the switching command, the downlink initial BWP needs to be configured with a CD-SSB or NCD-SSB; (that is, if there is no CD-SSB on the BWP, an additional NCD-SSB needs to be configured).

[0370] b) Further: NCD-SSB can be configured for the initial downlink BWP specified for the first activation when switching for a specific type of terminal based on the terminal's capabilities obtained by the base station.

[0371] As an embodiment, the capabilities of the terminal may be acquired by the target base station from the original base station (for example, carried in a handover request) or acquired from the core network.

[0372] The capability of the terminal (RedCap UE) may be that the terminal supports FG 6-1, but expects NCD-SSB to be included on the BWP instead of CORESET#0 / SIB.

[0373] 4. It is agreed that for connected users of a specific type of terminal, the downlink initial BWP specified during handover is the dedicated downlink initial BWP configured for the specific type of terminal (i.e., initialDownlinkBWP-RedCap in DownlinkConfigCommon, which is different from the first activated initial BWP mentioned above) and does not need to include CD-SSB. a) If a dedicated downlink initial BWP is configured for a specific type of terminal in the target cell, 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;

[0374] At this time, the dedicated downlink initial BWP configured for a specific type of terminal does not necessarily include SSB, so the terminal needs to use other initial BWPs (such as the initial BWP for ordinary users) for synchronization and measurement;

[0375] Further: NCD-SSB can be configured for a dedicated downlink initial BWP configured for a specific type of terminal;

[0376] In this case, for example, if there is no SSB, synchronization and measurement during the switching process can be accelerated, thereby optimizing performance.

[0377] Further: The configuration of NCD-SSB for a dedicated downlink initial BWP for a specific type of terminal needs to be based on the terminal's capabilities, such as whether the terminal supports the configuration of NCD-SSB; for example: the capability of the terminal (RedCap UE) may be that the terminal supports FG 6-1, but expects NCD-SSB to be included on the BWP instead of CORESET#0 / SIB.

[0378] At this time, if a dedicated downlink initial BWP is configured for a specific type of terminal without SSB, the terminal uses the downlink initial BWP with SSB for synchronization and measurement during random access, such as the downlink initial BWP configured in the MIB; or the downlink initial BWP used by Normal users;

[0379] 5. For connected users of certain types of terminals, the downlink initial BWP (i.e., initialDownlinkBWP in DownlinkConfigCommon) specified during handover must include SSB (CD-SSB). This is to ensure that the terminal can synchronize and complete random access as quickly as possible during the handover process.

[0380] a) If the target cell has a downlink initial BWP configured for common 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 configured for common users to the specific type of terminal as the designated downlink initial BWP during handover; the terminal will use this initial BWP for random access during handover;

[0381] b) If the downlink initial BWP configured for ordinary users exists in the target cell 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 to the specific type of terminal as the designated downlink initial BWP during handover;

[0382] The terminal will use the initial BWP to perform random access during handover;

[0383] c) If the downlink initial BWP configured for ordinary users does not exist in the target cell, the network device directly configures the downlink initial BWP configured in the MIB to the specific type of terminal as the designated downlink initial BWP during handover; the terminal will use this initial BWP for random access during handover;

[0384] 6. It is agreed that for connected users of a specific type of terminal, the uplink initial BWP specified during handover is the dedicated uplink initial BWP configured for the specific type of terminal [RedCap-specific initial UL BWP configuration);

[0385] a) As an embodiment, if the target base station is not configured with a dedicated downlink initial BWP for a specific type of terminal, the uplink initial BWP configured for a common user is used; at this time, the target base station supports Redcap, and either the target base station is configured with a dedicated downlink initial BWP for a specific type of terminal, or the uplink initial BWP configured for a common user has a bandwidth within the Redcap user bandwidth range.

[0386] The embodiment of the present invention also provides an information transmission device, such as Figure 9 As shown, the apparatus 100 is applied to a base station of cellular mobile wireless communication, wherein the apparatus 100 includes:

[0387] The first transceiver module 110 is 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 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.

[0388] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following:

[0389] The first activated downlink initial BWP;

[0390] The first activated uplink initial BWP;

[0391] First downlink initial BWP;

[0392] First uplink initial BWP.

[0393] In one embodiment, the first activated downlink initial BWP does not have a synchronization signal block SSB;

[0394] or,

[0395] The first activated downlink initial BWP has SSB.

[0396] In one embodiment, in response to determining that the first type UE has a predetermined capability, the first activated downlink initial BWP indicated by the BWP configuration information contains a non-cell-defined synchronization signal block NCD-SSB.

[0397] In one embodiment, the first downlink initial BWP does not have an SSB;

[0398] or,

[0399] The first downlink initial BWP has SSB in it.

[0400] In one embodiment, in response to determining that the first type UE has a predetermined capability, the first downlink initial BWP indicated by the BWP configuration information contains a non-cell-defined synchronization signal block NCD-SSB.

[0401] In one embodiment, the apparatus further includes a first processing module 120, wherein the first processing module 120 is configured to do at least one of the following:

[0402] 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;

[0403] 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, determining the third downlink initial BWP as the first downlink initial BWP;

[0404] 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 MIB corresponding to the target cell as the first downlink initial BWP;

[0405] In response to the target cell not being configured with a third downlink initial BWP for the second type UE, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is determined as the first downlink initial BWP.

[0406] In one embodiment, the apparatus further includes a first processing module 120, wherein the first processing module 120 is configured to do at least one of the following:

[0407] 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;

[0408] In response to the target cell being configured with a third uplink initial BWP for the second type 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 UE, the third uplink initial BWP is determined as the first uplink initial BWP.

[0409] In some embodiments, an embodiment of the present invention further provides an information transmission device, which is applied to a base station of cellular mobile wireless communication, wherein the device includes:

[0410] The first transceiver module is configured to send a cell switching command to a first type of user equipment UE, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP of the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type of UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

[0411] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following: a first downlink initial BWP or a first uplink initial BWP;

[0412] The apparatus further includes a first processing module, wherein the first processing module is configured to:

[0413] According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP;

[0414] According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP;

[0415] According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP;

[0416] According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

[0417] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information further includes a first activated uplink BWP.

[0418] In one embodiment, the first transceiver module is further configured to receive the BWP configuration information configured for the first type UE and sent by the base station to which the target cell belongs.

[0419] In one embodiment, the first transceiver module is further configured to receive UE type information sent by the first type UE; and send a handover request to the base station to which the target cell belongs, wherein the handover request carries the UE type information of the first type UE.

[0420] In one embodiment, the first downlink initial BWP does not have an SSB; or the first downlink initial BWP has an SSB.

[0421] In one embodiment, the first downlink initial BWP indicated by the BWP configuration information contains an NCD-SSB or a cell-defined synchronization signal block CD-SSB.

[0422] In one embodiment, the first processing module is configured to: determine that there is no cell definition synchronization signal block CD-SSB in the first downlink initial BWP, and perform synchronization and / or wireless signal measurement through the downlink initial BWP with NCD-SSB.

[0423] In one embodiment, the first processing module is configured to do at least one of the following:

[0424] According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP;

[0425] According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

[0426] The embodiment of the present invention also provides an information transmission device, such as Figure 10 As shown, it is applied to a UE of cellular mobile wireless communication, wherein the apparatus 200 includes:

[0427] The second transceiver module 210 is configured to receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating a bandwidth part BWP corresponding to the first type of user equipment 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.

[0428] In one embodiment, the BWP corresponding to the first type UE includes at least one of the following:

[0429] The first activated downlink initial BWP;

[0430] The first activated uplink initial BWP;

[0431] First downlink initial BWP;

[0432] First uplink initial BWP.

[0433] In one embodiment, the first activated downlink initial BWP does not have a synchronization signal block SSB;

[0434] or,

[0435] The first activated downlink initial BWP has SSB.

[0436] In one embodiment, the apparatus further includes a second processing module 220, and the second processing module 220 is configured to:

[0437] In response to the first activated downlink initial BWP not having an SSB, synchronization and / or wireless signal measurement is performed through the downlink initial BWP having an SSB in the target cell.

[0438] In one embodiment, the first downlink initial BWP does not have an SSB;

[0439] or,

[0440] The first downlink initial BWP has SSB in it.

[0441] In one embodiment, the apparatus further includes a second processing module 220, and the second processing module 220 is configured to:

[0442] In response to the first downlink initial BWP not having an SSB, synchronization and / or wireless signal measurement is performed through the downlink initial BWP having an SSB in the target cell.

[0443] In one embodiment, the second transceiver module 210 is further configured to:

[0444] Sending 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 the first activated downlink initial BWP with a non-cell defined synchronization signal block NCD-SSB and / or the first downlink initial BWP with NCD-SSB to the first type of user equipment UE.

[0445] In some embodiments, an embodiment of the present invention further provides an information transmission device, which is applied to a UE of cellular mobile wireless communication, wherein the device includes:

[0446] The second transceiver module is configured to receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP corresponding to the first type of user equipment UE in the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type of UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

[0447] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information includes at least one of the following: a first downlink initial BWP or a first uplink initial BWP;

[0448] The apparatus further includes a second processing module, wherein the second processing module is configured to:

[0449] According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP;

[0450] According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP;

[0451] According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP;

[0452] According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

[0453] In one embodiment, the BWP corresponding to the first type UE indicated by the BWP configuration information further includes a first activated uplink BWP.

[0454] In one embodiment, the second transceiver module is further configured to receive the BWP configuration information configured for the first type UE, which is sent from the base station to which the target cell belongs.

[0455] In one embodiment, the second transceiver module is further configured to send UE type information of the first type UE to the base station; the UE type information is carried in the handover request sent by the base station of the serving cell to the base station of the target cell.

[0456] In one embodiment, the first downlink initial BWP does not have an SSB; or the first downlink initial BWP has an SSB.

[0457] In one embodiment, the first downlink initial BWP indicated by the BWP configuration information contains an NCD-SSB or a cell-defined synchronization signal block CD-SSB.

[0458] In one embodiment, the second processing module is configured to: determine that there is no cell definition synchronization signal block CD-SSB in the first downlink initial BWP, and perform synchronization and / or wireless signal measurement through the downlink initial BWP with NCD-SSB.

[0459] In one embodiment, 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, wherein the predetermined capability is used for the base station to determine whether to indicate 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 to the first type of user equipment UE.

[0460] In one embodiment, the second processing module is further configured to do at least one of the following:

[0461] According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP;

[0462] According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

[0463] 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. can be implemented by one or more central processing units (CPUs), graphics processing units (GPUs), baseband processors (BPs), application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to execute the aforementioned method.

[0464] Figure 11 FIG3 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.

[0465] Reference Figure 11 , the device 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 .

[0466] The processing component 3002 generally controls the overall operation of the device 3000, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 3002 may include one or more processors 3020 to execute instructions to perform 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.

[0467] The memory 3004 is configured to store various types of data to support operations on the device 3000. Examples of such data include instructions for any application or method operating on the device 3000, contact data, phone book data, messages, pictures, videos, etc. The memory 3004 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0468] The power supply component 3006 provides power to the various components of the device 3000. The power supply 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 device 3000.

[0469] 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 may 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, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide 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 front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0470] 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 signal can be further stored in the memory 3004 or transmitted via the communication component 3016. In some embodiments, the audio component 3010 also includes a speaker for outputting audio signals.

[0471] I / O interface 3012 provides an interface between processing component 3002 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0472] The sensor assembly 3014 includes one or more sensors for providing various aspects of the status assessment of the device 3000. For example, the sensor assembly 3014 can detect the open / closed state of the device 3000, the relative positioning of components, such as the display and keypad of the device 3000. The sensor assembly 3014 can also detect changes 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 temperature changes of the device 3000. The sensor assembly 3014 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 3014 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 3014 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0473] The communication component 3016 is configured to facilitate wired or wireless communication between the device 3000 and other devices. The device 3000 can access a wireless network based on a communication standard, 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 also 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.

[0474] In an exemplary embodiment, the apparatus 3000 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described method.

[0475] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 3004 including instructions, which can be executed by the processor 3020 of the apparatus 3000 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0476] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed in the present invention. The specification and examples are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0477] It should be understood that the embodiments of the present invention are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present invention is limited only by the appended claims.

Claims

1. A method for transmitting information, performed by a base station, wherein: The method comprises: A cell switching command is sent to a first type of user equipment UE, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP of the target cell, the BWP configuration information includes the first activated downlink BWP adopted by the first type UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

2. The method according to claim 1, wherein the BWP corresponding to the first type UE indicated by the BWP configuration information comprises at least one of the following: a first downlink initial BWP or a first uplink initial BWP; The method further comprises: According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP; According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP; According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP; According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

3. The method according to claim 1, wherein The BWP corresponding to the first type UE indicated by the BWP configuration information also includes a first activated uplink BWP.

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

5. The method according to claim 1, wherein The method further comprises: receiving UE type information sent by the first type UE; A handover request is sent to a base station to which the target cell belongs, where the handover request carries information about the UE type of the first type of UE.

6. The method according to claim 2, wherein: The first downlink initial BWP does not have an SSB; or, The first downlink initial BWP has an SSB.

7. The method according to any one of claims 2 to 6, wherein: The first downlink initial BWP indicated by the BWP configuration information contains NCD-SSB or cell-defined synchronization signal block CD-SSB.

8. The method according to claim 2, wherein: The method further comprises: Determine that the first downlink initial BWP does not have a cell definition synchronization signal block CD-SSB, and perform synchronization and / or wireless signal measurement through the downlink initial BWP with NCD-SSB.

9. The method according to claim 1, wherein The method further comprises at least one of the following: According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP; According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

10. An information transmission method, performed by a first type of user equipment UE, wherein: The method comprises: Receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP corresponding to the first type UE in the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

11. The method according to claim 10, wherein the BWP corresponding to the first type UE indicated by the BWP configuration information comprises at least one of the following: a first downlink initial BWP or a first uplink initial BWP; The method further comprises: According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP; According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP; According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP; According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

12. The method according to claim 10, wherein: The BWP corresponding to the first type UE indicated by the BWP configuration information also includes a first activated uplink BWP.

13. The method according to claim 10, wherein: The method further comprises: Receive the BWP configuration information configured for the first type UE, which is sent from the base station to which the target cell belongs.

14. The method according to claim 10, wherein: The method further comprises: The UE type information of the first type UE is sent to the base station; the UE type information is carried in a handover request sent by the base station of the serving cell to the base station of the target cell.

15. The method according to claim 11, wherein The first downlink initial BWP does not have an SSB; or, The first downlink initial BWP has an SSB.

16. The method according to any one of claims 11 to 15, wherein: The first downlink initial BWP indicated by the BWP configuration information contains NCD-SSB or cell-defined synchronization signal block CD-SSB.

17. The method according to claim 11, wherein The method further comprises: Determine that the first downlink initial BWP does not have a cell definition synchronization signal block CD-SSB, and perform synchronization and / or wireless signal measurement through the downlink initial BWP with NCD-SSB.

18. The method according to claim 12, wherein: The method further comprises: Sending 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 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 to the first type of user equipment UE.

19. The method according to claim 10, wherein The method further comprises at least one of the following: According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP; According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

20. An information transmission device, wherein: The device comprises: The first transceiver module is configured to send a cell switching command to a first type of user equipment UE, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP of the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type of UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

21. The apparatus according to claim 20, wherein the BWP corresponding to the first type UE indicated by the BWP configuration information comprises at least one of the following: a first downlink initial BWP or a first uplink initial BWP; The apparatus further includes a first processing module, wherein the first processing module is configured to: According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP; According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP; According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP; According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

22. The device according to claim 20, wherein The BWP corresponding to the first type UE indicated by the BWP configuration information also includes a first activated uplink BWP.

23. The apparatus according to claim 20, wherein The first transceiver module is further configured to receive the BWP configuration information configured for the first type of UE, which is sent by the base station to which the target cell belongs.

24. The apparatus according to claim 20, wherein The first transceiver module is further configured to receive UE type information sent by the first type UE; and send a handover request to the base station to which the target cell belongs, where the handover request carries the UE type information of the first type UE.

25. The apparatus according to claim 21, wherein The first downlink initial BWP does not have an SSB; or, The first downlink initial BWP has an SSB.

26. The device according to any one of claims 21 to 25, wherein: The first downlink initial BWP indicated by the BWP configuration information contains NCD-SSB or cell-defined synchronization signal block CD-SSB.

27. The method according to claim 21, wherein The first processing module is configured to: Determine that the first downlink initial BWP does not have a cell definition synchronization signal block CD-SSB, and perform synchronization and / or wireless signal measurement through the downlink initial BWP with NCD-SSB.

28. The apparatus according to claim 20, wherein The first processing module is configured to do at least one of the following: According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP; According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

29. An information transmission device, wherein: The device comprises: The second transceiver module is configured to receive a cell switching command from a base station, wherein the cell switching command carries BWP configuration information indicating the bandwidth part BWP corresponding to the first type of user equipment UE in the target cell, and the BWP configuration information includes the first activated downlink BWP adopted by the first type of UE in the target cell, and the first activated downlink BWP has a non-cell defined synchronization signal block NCD-SSB.

30. The apparatus according to claim 29, wherein the BWP corresponding to the first type UE indicated by the BWP configuration information comprises at least one of the following: a first downlink initial BWP or a first uplink initial BWP; The apparatus further includes a second processing module, wherein the second processing module is configured to: According to a second downlink initial BWP configured for the first type of UE, using the second downlink initial BWP as the first downlink initial BWP; According to a third downlink initial BWP configured for the second type of UE, and the bandwidth of the third downlink initial BWP is less than or equal to the bandwidth of the downlink BWP supported by the first type of UE, using the third downlink initial BWP as the first downlink initial BWP; According to a second uplink initial BWP configured for the first type of UE, using the second uplink initial BWP as the first uplink initial BWP; According to the configuration of a third uplink initial BWP for the second type UE, and the bandwidth of the third uplink initial BWP is less than or equal to the bandwidth of the uplink BWP supported by the first type UE, the third uplink initial BWP is used as the first uplink initial BWP.

31. The apparatus according to claim 29, wherein The BWP corresponding to the first type UE indicated by the BWP configuration information also includes a first activated uplink BWP.

32. The apparatus of claim 29, wherein: The second transceiver module is further configured to receive the BWP configuration information configured for the first type of UE, which is sent from the base station to which the target cell belongs.

33. The apparatus of claim 29, wherein: The second transceiver module is further configured to send UE type information of the first type UE to the base station; the UE type information is carried in the handover request sent by the base station of the serving cell to the base station of the target cell.

34. The apparatus according to claim 30, wherein The first downlink initial BWP does not have an SSB; or, The first downlink initial BWP has an SSB.

35. The method according to any one of claims 30 to 34, wherein: The first downlink initial BWP indicated by the BWP configuration information contains NCD-SSB or cell-defined synchronization signal block CD-SSB.

36. The apparatus of claim 30, wherein: The second processing module is configured to: Determine that the first downlink initial BWP does not have a cell definition synchronization signal block CD-SSB, and perform synchronization and / or wireless signal measurement through the downlink initial BWP with NCD-SSB.

37. The apparatus of claim 31 , wherein: The second transceiver module is further configured to: Sending 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 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 to the first type of user equipment UE.

38. The apparatus of claim 29, wherein: The second processing module is further configured to do at least one of the following: According to the configuration of a third downlink initial BWP for the second type of UE, and the bandwidth of the third downlink initial BWP is greater than the bandwidth of the downlink BWP supported by the first type of UE, using the fourth downlink initial BWP configured in the master information block MIB corresponding to the target cell as the first downlink initial BWP; According to the fact that the third downlink initial BWP for the second type UE is not configured, the fifth downlink initial BWP configured in the MIB corresponding to the target cell is used as the first downlink initial BWP.

39. A communication device comprising a processor, a memory, and an executable program stored in the memory and capable of being run by the processor, wherein: When the processor runs the executable program, the processor performs the steps of the information transmission method according to any one of claims 1 to 9, or 10 to 19.

40. A storage medium having an executable program stored thereon, wherein: When the executable program is executed by a processor, the steps of the information transmission method according to any one of claims 1 to 9 or 10 to 19 are implemented.

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