Communication method and device, system, storage medium, and program product

Abstract

The present disclosure relates to the technical field of communications, and relates to a communication method and device, a system, a storage medium, and a program product. The method is executed by a terminal device, and comprises: determining a third frequency domain resource on the basis of a first frequency domain resource and a second frequency domain resource, wherein the first frequency domain resource is a frequency domain resource corresponding to a first channel, the second frequency domain resource is a bandwidth part allocated to a terminal device, and the third frequency domain resource is used by the terminal device to receive or detect downlink control information (DCI), the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource. According to the method, the third frequency domain resource is determined on the basis of the first frequency domain resource and the second frequency domain resource, so that a frequency domain resource capable of completely transmitting DCI is determined, thereby avoiding information loss of the DCI during transmission, and improving the stability of the transmission of the DCI.

Description

Communication methods, devices, systems, storage media and software products Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to communication methods, devices, systems, storage media, and program products. Background Technology

[0002] IoT is a brand-new Internet of Things technology. In existing IoT technologies, due to the small working bandwidth of IoT devices, network devices need to punch holes in a portion of the bandwidth (Bandwidth Part, BWP) when transmitting control resources to IoT devices in order to adapt to the working bandwidth of IoT devices. Summary of the Invention

[0003] This disclosure provides a communication method, device, system, storage medium, and program product that can be used in the field of communication technology.

[0004] According to a first aspect of the present disclosure, a communication method is proposed, executed by a terminal device, the method comprising: determining a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource, wherein the first frequency domain resource is the frequency domain resource corresponding to a first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the terminal device to receive or detect downlink control information (DCI); the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

[0005] According to a second aspect of the present disclosure, a communication method is proposed, executed by a terminal device, the method comprising: receiving or detecting downlink control information (DCI) on a first frequency domain resource at different times, wherein the DCI on the first frequency domain resource corresponding to different times is the same, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to different times is different, the first frequency domain resource is used for the control channel between the terminal device and the network device, the second frequency domain resource is used for all channels between the terminal device and the network device, and the size of the first frequency domain resource is greater than the size of the second frequency domain resource.

[0006] According to a third aspect of the present disclosure, a communication method is proposed, executed by a network device, the method comprising: determining a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource, wherein the first frequency domain resource is the frequency domain resource corresponding to a first channel, the second frequency domain resource is the bandwidth portion allocated to a terminal device, and the third frequency domain resource is used by the network device to transmit downlink control information (DCI); the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

[0007] According to a fourth aspect of the present disclosure, a communication method is proposed, executed by a network device, the method comprising: transmitting downlink control information (DCI) on a first frequency domain resource at different times, wherein the DCI on the first frequency domain resource corresponding to the different times is the same, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the different times is different, the first frequency domain resource is used as a control channel between a terminal device and a network device, the second frequency domain resource is a bandwidth portion allocated to the terminal device, and the size of the first frequency domain resource is greater than the size of the second frequency domain resource.

[0008] According to a fifth aspect of the embodiments of this disclosure, a communication device is provided for performing the communication method described in any one of the first, second, third, and fourth aspects.

[0009] According to a sixth aspect of the present disclosure, a communication system is provided, including a terminal device and a network device, wherein the terminal device is configured to implement the communication method described in any one of the first or second aspects, and the network device is configured to implement the communication method described in any one of the third or fourth aspects.

[0010] According to a seventh aspect of the present disclosure, a computer storage medium is provided that stores computer-executable instructions, which, when executed on a communication device, cause the communication device to perform the communication method described in any one of the first and second aspects.

[0011] According to an eighth aspect of the present disclosure, a program product is provided, comprising at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, they implement the steps of the method of any one of the first, second, third, and fourth aspects.

[0012] According to the communication method proposed in this disclosure, a third frequency domain resource is determined through the first and second frequency domain resources, thereby determining the frequency domain resources that can completely transmit downlink control information, avoiding information loss during downlink control information transmission and improving the stability of downlink control information transmission. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0014] Figure 1A is an example diagram of frequency domain resources provided according to an embodiment of the present disclosure;

[0015] Figure 1B is a schematic diagram of a communication system architecture provided according to an embodiment of the present disclosure;

[0016] Figure 2A is an interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure;

[0017] Figure 2B is an interactive schematic diagram of another communication method provided according to an embodiment of the present disclosure;

[0018] Figures 3A-3K are example diagrams of frequency domain resources provided according to embodiments of the present disclosure;

[0019] Figure 4 is a schematic flowchart of a communication method for a terminal device according to an embodiment of the present disclosure;

[0020] Figure 5 is a schematic flowchart of a communication method for a terminal device according to an embodiment of the present disclosure;

[0021] Figure 6 is a schematic flowchart of a communication method for a network device according to an embodiment of the present disclosure;

[0022] Figure 7 is a schematic flowchart of a communication method for a network device according to an embodiment of the present disclosure;

[0023] Figure 8A is an interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure;

[0024] Figure 8B is an interactive schematic diagram of another communication method provided according to an embodiment of the present disclosure;

[0025] Figure 9A is a schematic diagram of the structure of a terminal device provided according to an embodiment of the present disclosure;

[0026] Figure 9B is a schematic diagram of the structure of a terminal device provided according to an embodiment of the present disclosure;

[0027] Figure 9C is a schematic diagram of the structure of a network device provided according to an embodiment of the present disclosure;

[0028] Figure 9D is a schematic diagram of the structure of a network device provided according to an embodiment of the present disclosure;

[0029] Figure 10A is a schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure;

[0030] Figure 10B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0031] This disclosure provides communication methods, devices, systems, storage media, and program products.

[0032] In a first aspect, an embodiment of this disclosure provides a communication method executed by a terminal device. The method includes: determining a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource, wherein the first frequency domain resource is the frequency domain resource corresponding to a first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the terminal device to receive or detect downlink control information (DCI); the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

[0033] In the above embodiments, the third frequency domain resource is determined by using the first and second frequency domain resources, thereby determining the frequency domain resources that can completely transmit downlink control information, avoiding information loss during downlink control information transmission and improving the stability of downlink control information transmission.

[0034] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes: determining a first offset value, or receiving a first offset value from a network device; wherein the first offset value represents an offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0035] In the above embodiments, the first offset value is determined in multiple ways, thereby improving the applicability of this solution.

[0036] In conjunction with some embodiments of the first aspect, in some embodiments, the size of the third frequency domain resource is less than or equal to the size of the overlapping portion of the second frequency domain resource and the first frequency domain resource.

[0037] In the above embodiments, by limiting the size of the third frequency domain resource to be less than or equal to the size of the overlapping portion of the second frequency domain resource and the first frequency domain resource, information loss is avoided when transmitting downlink control information using the third frequency domain resource, thereby improving the stability of downlink control information transmission.

[0038] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes: receiving or detecting DCI on a third frequency domain resource, wherein the terminal device is an Internet of Things (IoT) terminal device.

[0039] In the above embodiments, when the terminal device is an Internet of Things (IoT) terminal device, by receiving or detecting DCI on the third frequency domain resources, the complete reception or detection of downlink control information is achieved, thereby improving the stability of downlink control information transmission.

[0040] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes: receiving or detecting DCI on a third frequency domain resource or on a first frequency domain resource, wherein the terminal device is a traditional legacy terminal device.

[0041] In the above embodiments, when the terminal device is a traditional legacy terminal device, by receiving or detecting DCI on the third frequency domain resource or on the first frequency domain resource, the complete reception or detection of downlink control information is achieved, which improves the stability of downlink control information transmission. Furthermore, by achieving the reception or detection of downlink control information in multiple ways, the scope of application of this solution is expanded.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes at least one of the following: receiving at least one of a first configuration parameter and a second configuration parameter sent by a network device, wherein the first configuration parameter is used to configure a first frequency domain resource and the second configuration parameter is used to configure a second frequency domain resource; determining the first frequency domain resource based on the first configuration parameter; and determining the second frequency domain resource based on at least one of the second configuration parameter, the capability of the terminal device, and the type of the terminal device.

[0043] In the above embodiments, by determining the first frequency domain resources and the second frequency domain resources, a foundation is laid for determining the frequency domain resources that can completely receive or detect downlink control information, avoiding information loss during downlink control information transmission and improving the stability of downlink control information transmission.

[0044] In conjunction with some embodiments of the first aspect, in some embodiments, the first configuration parameter includes at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource; the second configuration parameter includes at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0045] In conjunction with some embodiments of the first aspect, in some embodiments, determining a third frequency domain resource based on the first frequency domain resource and the second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource; and determining the size of the third frequency domain resource as the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource.

[0046] In the above embodiments, the frequency domain location and resource size of the third frequency domain resource are determined according to the protocol predefined, thereby realizing the determination of the third frequency domain resource, improving the applicability of this disclosure, and laying the foundation for avoiding information loss during downlink control information transmission.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, determining a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource;

[0048] Determine the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource; determine the size of the third frequency domain resource as the first value, where the first value is less than the minimum value.

[0049] In the above embodiments, the frequency domain position of the third frequency domain resource is determined according to the protocol predefined, and the minimum value of the size of the first frequency domain resource and the size of the second frequency domain resource, as well as the first value, are determined according to the protocol predefined, thereby realizing the determination of the third frequency domain resource, improving the applicability of this disclosure, and laying the foundation for avoiding information loss during downlink control information transmission.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource; and determining the size of the third frequency domain resource as the size of the overlapping portion of the first and second frequency domain resources.

[0051] In the above embodiments, the frequency domain location and resource size of the third frequency domain resource are determined according to the protocol predefined, thereby realizing the determination of the third frequency domain resource, improving the applicability of this disclosure, and laying the foundation for avoiding information loss during downlink control information transmission.

[0052] In conjunction with some embodiments of the first aspect, in some embodiments, determining a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource; determining the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0053] In the above embodiments, the frequency domain position of the third frequency domain resource is determined according to the protocol predefined, and the size of the overlapping part of the first frequency domain resource and the second frequency domain resource, as well as the first value, are determined according to the protocol predefined, thereby realizing the determination of the third frequency domain resource, improving the applicability of this disclosure, and laying the foundation for avoiding information loss during downlink control information transmission.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, determining a third frequency domain resource based on the first frequency domain resource and the second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource plus a third offset value; determining the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0055] In the above embodiments, the frequency domain position of the third frequency domain resource is determined according to the protocol predefined, and the size of the overlapping part of the first frequency domain resource and the second frequency domain resource, as well as the first value, are determined according to the protocol predefined, thereby realizing the determination of the third frequency domain resource, improving the applicability of this disclosure, and laying the foundation for avoiding information loss during downlink control information transmission.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, the first value satisfies at least one of the following: the first value is a value predefined by the protocol; the first value is a value indicated by the network device; the first value is an even number of frequency domain resource units; the first value is a multiple of 3 frequency domain resource units; the first value is a multiple of 4 frequency domain resource units; the first value is a multiple of 5 frequency domain resource units; the first value is a multiple of 6 frequency domain resource units; the first value is the nearest neighbor value that is less than the minimum value of the first frequency domain resource and the second frequency domain resource; the first value is the nearest neighbor value that is less than the size of the overlap between the first frequency domain resource and the second frequency domain resource; the first value is related to the time domain resource corresponding to the third frequency domain resource.

[0057] Secondly, embodiments of this disclosure provide a communication method executed by a terminal device. The method includes: receiving or detecting downlink control information (DCI) on a first frequency domain resource at different times, wherein the DCI on the first frequency domain resource corresponding to different times is the same, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to different times is different, the first frequency domain resource is the frequency domain resource corresponding to a first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the size of the first frequency domain resource is greater than the size of the second frequency domain resource.

[0058] In the above embodiments, by receiving or detecting downlink control information (DCI) on the first frequency domain resource at different times, multiple ways of receiving or detecting downlink control information are realized, thereby improving the applicability of this solution and realizing complete reception or detection of downlink control information, avoiding information loss during downlink control information transmission, and improving the stability of downlink control information transmission.

[0059] In conjunction with some embodiments of the second aspect, in some embodiments, receiving or detecting downlink control information (DCI) on a first frequency domain resource at different times includes: receiving or detecting DCI on a first frequency domain resource at a first time, wherein the first frequency domain resource corresponding to the first time is aligned with a second frequency domain resource in the high-frequency direction; and receiving or detecting DCI on a first frequency domain resource at a second time, wherein the first frequency domain resource corresponding to the second time is aligned with a second frequency domain resource in the low-frequency direction.

[0060] In the above embodiments, by receiving or detecting downlink control information at a first or second opportune moment, various methods for receiving or detecting downlink control information are provided, thereby improving the applicability of the present disclosure.

[0061] In conjunction with some embodiments of the second aspect, in some embodiments, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the first timing, and the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the second timing, constitute a complete first frequency domain resource.

[0062] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes: determining a first offset value, or receiving a first offset value from a network device; wherein the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0063] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes at least one of the following: receiving at least one of a first configuration parameter and a second configuration parameter sent by a network device, wherein the first configuration parameter is used to configure a first frequency domain resource and the second configuration parameter is used to configure a second frequency domain resource; determining the first frequency domain resource based on the first configuration parameter; and determining the second frequency domain resource based on at least one of the second configuration parameter, the capability of the terminal device, and the type of the terminal device.

[0064] In conjunction with some embodiments of the second aspect, in some embodiments, the first configuration parameter includes at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource; the second configuration parameter includes at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, the terminal device is an IoT terminal device.

[0066] Thirdly, embodiments of this disclosure provide a communication method executed by a network device. The method includes: determining a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource, wherein the first frequency domain resource is the frequency domain resource corresponding to a first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the network device to send downlink control information (DCI); the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

[0067] In the above embodiments, the third frequency domain resource is determined by using the first and second frequency domain resources, thereby determining the frequency domain resources that can completely transmit downlink control information, avoiding information loss during downlink control information transmission and improving the stability of downlink control information transmission.

[0068] In conjunction with some embodiments of the third aspect, in some embodiments, the method further includes: determining a first offset value, and / or sending the first offset value to a terminal device; wherein the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0069] In conjunction with some embodiments of the third aspect, in some embodiments, the size of the third frequency domain resource is less than or equal to the size of the overlapping portion of the second frequency domain resource and the first frequency domain resource.

[0070] In conjunction with some embodiments of the third aspect, in some embodiments, the method further includes: transmitting DCI on a third frequency domain resource, wherein the terminal device is an Internet of Things (IoT) terminal device.

[0071] In conjunction with some embodiments of the third aspect, in some embodiments, the method further includes: transmitting DCI on a third frequency domain resource or on a first frequency domain resource, wherein the terminal device is a legacy terminal device.

[0072] In conjunction with some embodiments of the third aspect, in some embodiments, the method further includes at least one of the following: sending at least one of a first configuration parameter and a second configuration parameter to a terminal device, wherein the first configuration parameter is used to configure a first frequency domain resource, the second configuration parameter is used to configure a second frequency domain resource, and the second configuration parameter is related to at least one of the capabilities of the terminal device and the type of the terminal device.

[0073] In conjunction with some embodiments of the third aspect, in some embodiments, the first configuration parameter includes at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource; the second configuration parameter includes at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0074] In conjunction with some embodiments of the third aspect, in some embodiments, determining a third frequency domain resource based on the first frequency domain resource and the second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource; and determining the size of the third frequency domain resource as the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource.

[0075] In conjunction with some embodiments of the third aspect, in some embodiments, determining a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource; determining the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the minimum value.

[0076] In conjunction with some embodiments of the third aspect, in some embodiments, determining a third frequency domain resource based on the first frequency domain resource and the second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource; and determining the size of the third frequency domain resource as the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource.

[0077] In conjunction with some embodiments of the third aspect, in some embodiments, determining a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource; determining the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0078] In conjunction with some embodiments of the third aspect, in some embodiments, determining a third frequency domain resource based on the first frequency domain resource and the second frequency domain resource includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource plus a third offset value; determining the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0079] In conjunction with some embodiments of the third aspect, in some embodiments, the first value satisfies at least one of the following: the first value is a value predefined by the protocol; the first value is a value indicated by the network device; the first value is an even number of frequency domain resource units; the first value is a multiple of 3 frequency domain resource units; the first value is a multiple of 4 frequency domain resource units; the first value is a multiple of 5 frequency domain resource units; the first value is a multiple of 6 frequency domain resource units; the first value is the nearest neighbor value that is less than the minimum value of the first frequency domain resource and the second frequency domain resource; the first value is the nearest neighbor value that is less than the size of the overlap between the first frequency domain resource and the second frequency domain resource; the first value is related to the time domain resource corresponding to the third frequency domain resource.

[0080] Fourthly, embodiments of this disclosure provide a communication method executed by a network device. The method includes: transmitting downlink control information (DCI) on a first frequency domain resource at different times, wherein the DCI on the first frequency domain resource corresponding to different times is the same, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to different times is different, the first frequency domain resource is the frequency domain resource corresponding to a first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the size of the first frequency domain resource is greater than the size of the second frequency domain resource.

[0081] In the above embodiments, by transmitting downlink control information (DCI) on the first frequency domain resource at different times, multiple ways of transmitting downlink control information are realized, which improves the applicability of this solution and realizes the complete transmission of downlink control information, avoiding information loss during downlink control information transmission and improving the stability of downlink control information transmission.

[0082] In conjunction with some embodiments of the fourth aspect, in some embodiments, transmitting downlink control information (DCI) on a first frequency domain resource at different times includes: transmitting DCI on a first frequency domain resource at a first time, wherein the first frequency domain resource corresponding to the first time is aligned with the second frequency domain resource in the high-frequency direction; and transmitting DCI on a first frequency domain resource at a second time, wherein the first frequency domain resource corresponding to the second time is aligned with the second frequency domain resource in the low-frequency direction.

[0083] In conjunction with some embodiments of the fourth aspect, in some embodiments, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the first timing, and the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the second timing, constitute a complete first frequency domain resource.

[0084] In conjunction with some embodiments of the fourth aspect, in some embodiments, the method further includes: determining a first offset value, and / or sending the first offset value to a terminal device; wherein the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0085] In conjunction with some embodiments of the fourth aspect, in some embodiments, the method further includes at least one of the following: sending at least one of a first configuration parameter and a second configuration parameter to a terminal device, wherein the first configuration parameter is used to configure a first frequency domain resource, the second configuration parameter is used to configure a second frequency domain resource, and the second configuration parameter is related to at least one of the capabilities of the terminal device and the type of the terminal device.

[0086] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first configuration parameter includes at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource; the second configuration parameter includes at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0087] Fifthly, embodiments of this disclosure provide a communication device, wherein the communication device is used to perform the method described in any one of the embodiments of the first, second, third, and fourth aspects of this disclosure.

[0088] In a sixth aspect, embodiments of this disclosure provide a communication system, including: a terminal device configured to implement the method described in any one of the embodiments of the first or second aspect of this disclosure; and a network device configured to implement the method described in any one of the embodiments of the third or fourth aspect of this disclosure.

[0089] In a seventh aspect, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method described in any one of the embodiments of the first, second, third, and fourth aspects of this disclosure.

[0090] Eighthly, embodiments of this disclosure provide a program product including at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, they implement the method described in any one of the embodiments of the first, second, third, and fourth aspects.

[0091] It is understood that the aforementioned terminal devices, network devices, communication devices, communication systems, storage media, and program products are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0092] This disclosure provides communication methods, devices, systems, storage media, and program products. In some embodiments, terms such as communication method and information processing method can be used interchangeably, as can terms such as network device and information processing apparatus and communication apparatus, and terms such as information processing system and communication system.

[0093] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0094] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0095] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0096] In this disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the aforementioned," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular or a plural expression.

[0097] In the embodiments disclosed herein, "multiple" refers to two or more.

[0098] In some embodiments, the terms “at least one of”, “at least one of”, “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0099] The descriptions in this disclosure, such as "at least one of A, B, C..." or "A and / or B and / or C...", include the case where any one of A, B, C... exists alone, as well as the case where any combination of any of A, B, C... exists alone. Each case can exist alone. For example, "at least one of A, B, C" includes the cases of A alone, B alone, C alone, A and B combination, A and C combination, B and C combination, and A and B and C combination. For example, A and / or B includes the cases of A alone, B alone, and A and B combination.

[0100] In some embodiments, the notation "in one case A, in another case B" or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: A is executed regardless of B, i.e., A is executed in some embodiments; B is executed regardless of A, i.e., B is executed in some embodiments; A and B are selectively executed, i.e., A and B are selected for execution in some embodiments; A and B are both executed, i.e., A and B are executed in some embodiments. The same applies when there are more branches such as A, B, and C.

[0101] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0102] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0103] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0104] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0105] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0106] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0107] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0108] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0109] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0110] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0111] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0112] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0113] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0114] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0115] Introduction to IoT Technology: IoT is a new Internet of Things technology. In existing IoT technologies, due to the limited operating bandwidth of IoT devices, the system bandwidth or partial bandwidth (BWP) allocated to the terminal by the network device is relatively small in order to match the operating bandwidth of the IoT device. Therefore, the partial bandwidth (BWP) may be less than the bandwidth of the control resource set (CORESET), causing the signals carried on the control resource set to exceed the range of the BWP, resulting in the excess signal being punctured.

[0116] Introduction to the time and frequency resource configuration of the Physical Downlink Control Channel (NR PDCCH):

[0117] The identification of a control resource set (CORESET) in the serving cell is determined by the parameter ControlResourceSetId. Rel-15 supports a maximum of 12 CORESETs, and Rel-18 supports a maximum of 16 CORESETs. For each CORESET, Rel-16 introduces a control resource set index (CORESETPoolIndex), which takes the value 0 or 1. For CORESETs without this parameter configured, the terminal can assume its value is 0. The CORESETPoolIndex parameter serves to distinguish TRPs transmitting PDSCH, is used to generate HARQ-ACK codebooks, and determines the default QCL reference, among other things.

[0118] The frequencies allocated in a CORESET can be continuous or discontinuous, configured by the frequency domain resources parameter in the IE ControlResourceSet. The bit size is 45, starting from the first resource block group (RB group) in the BWP or Multicast / Broadcast Services Common Frequecy Resource (MBS CFR). Each bit corresponds to a 6RBs RB group, meaning the CORESET frequency domain granularity is 6RBs. The setting of 6RBs is related to the size of the PDCCH granularity CCE. Rel-16 introduced rb-Offset-r16, used to indicate the RB-level offset between the first RB of the first 6RBs RB group in the CORESET and the first RB of the BWP, with a value ranging from 0 to 5.

[0119] The time domain span of CORESET is 1 to 3 consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols, following the design of Long Term Evolution (LTE). The duration parameter is configured in the IE ControlResourceSet. The time domain starting point of CORESET is determined by monitoringSlotPeriodicityAndOffset, monitoringSymbolsWithinSlot, and duration in the IE SearchSpace.

[0120] Furthermore, CORESETs configured for different terminals can overlap in the time or frequency domain. This overlap is allowed primarily because of the simplicity of base station implementation and the limited actual frequency domain resources, making it impossible to configure independent CORESETs for all terminal devices. The IE ControlResourceSet configures the time domain duration and the frequency domain range for searching the PDCCH for the CORESET, but the specific time domain location of the CORESET is determined by the parameter IE SearchSpace. To distinguish it from the purely logical concept of LTE SearchSpace, NR introduces the concept of SearchSpace Set to describe the time domain starting point of each CORESET.

[0121] Configuring control resources suitable for narrowband transmission: From the perspective of limiting maximum bandwidth, such as NR redCap, it actually has no impact on the design of PDCCH, because the PDCCH design is based on supporting the minimum bandwidth. From the perspective of enhancing the minimum bandwidth, then there may be room for enhancement. Taking NR as an example, the initial system design minimum bandwidth is 5MHz, and later 3MHz is supported. For SSB (20RB) and CORESET bandwidth (24RB), BWP can be 15RB.

[0122] As shown in Figure 1A, a portion of the bandwidth BWP is less than the bandwidth of the control resource set (CORESET). This causes the signal carried on the control resource set to exceed the range of the BWP, resulting in the excess signal being punctured. For the receiver, the portion of the signal exceeding the BWP cannot be received or detected; the terminal can only receive the portion of the signal within the BWP range, leading to reduced system transmission reliability. Specifically, DCI signals carried on the CORESET and within the BWP range can be received / detected by the terminal, but DCI signals exceeding the BWP range cannot be received / detected, preventing the terminal from performing blind DCI detection.

[0123] Furthermore, for DCI interleaving mapping, since the entire DCI is distributed across the entire CORESET bandwidth in the frequency domain, the UE will lose a significant amount of information during reception. Therefore, how to configure control resources suitable for narrowband transmission in 6G is a problem that needs to be addressed.

[0124] In conjunction with the aforementioned related technologies, this disclosure proposes a communication method, device, system, storage medium, and program product. By using first and second frequency domain resources, a third frequency domain resource is determined, thereby identifying the frequency domain resources capable of completely transmitting downlink control information. This avoids information loss during downlink control information transmission and improves the stability of downlink control information transmission.

[0125] The method proposed in this disclosure is applicable to various communication systems, including but not limited to 4G, 5G, 5G-advance and subsequent communication technologies (such as 6G).

[0126] Figure 1B is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1B, the communication system 100 may include a terminal device 101 and a network device 102.

[0127] In some embodiments, terminal device 101 may determine third frequency domain resources.

[0128] In some embodiments, the terminal device 101 may receive a first offset value.

[0129] In some embodiments, the terminal device 101 may determine the first frequency domain resources and the second frequency domain resources.

[0130] In some embodiments, terminal device 101 may receive or detect downlink control information (DCI) on a first frequency domain resource.

[0131] In some embodiments, the terminal device 101 may receive at least one of a first configuration parameter and a second configuration parameter.

[0132] In some embodiments, the terminal device 101 may be an Internet of Things (IoT) terminal device or a traditional legacy terminal device.

[0133] In some embodiments, the name of the terminal device 101 is not limited, and it may be, for example, a "control information receiving device" or a "frequency domain resource determination device".

[0134] In some embodiments, network device 102 may determine third frequency domain resources.

[0135] In some embodiments, network device 102 may send a first offset value.

[0136] In some embodiments, network device 102 may determine a first frequency domain resource and a second frequency domain resource.

[0137] In some embodiments, network device 102 may transmit downlink control information (DCI) on a first frequency domain resource.

[0138] In some embodiments, network device 102 may send at least one of a first configuration parameter and a second configuration parameter.

[0139] In some embodiments, network device 102 may be a base station or a transmission point.

[0140] In some embodiments, the name of the network device 102 is not limited, and it may be, for example, a "control information transmitting device" or a "frequency domain resource determining device".

[0141] In some embodiments, the terminal device may include at least one of, but is not limited to, a mobile phone, a wearable device, an Internet of Things device, a car with communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and a wireless terminal device in a smart home.

[0142] The network device in this application embodiment is an entity on the network side used to transmit or receive signals. For example, the network device can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of this application do not limit the specific technology or device form used in the network device. The network device provided in this application embodiment can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure, the protocol layer of the network device, such as a base station, can be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining part or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0143] The terminal device in this application embodiment is a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal device can also be called a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal device.

[0144] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0145] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1B, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1B are illustrative. The communication system may include all or some of the main bodies in FIG1B, or may include other main bodies outside of FIG1B. The number and form of each main body are arbitrary. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0146] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other user plane path establishment methods, and next-generation systems extended from them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0147] Figure 2A is an interactive schematic diagram of a communication method provided in an embodiment of this disclosure. As shown in Figure 2A, this embodiment of the disclosure relates to a communication method that can be executed by a communication system, such as the communication system 100 shown in Figure 1B. The communication system 100 includes a terminal device 101 and a network device 102. The interactive method may include the following steps:

[0148] Step 2101, network device 102 determines the first offset value.

[0149] In some embodiments, network device 102 may determine the first offset value based on a predefined protocol, but is not limited thereto; network device 102 may also determine the first offset value itself through relevant parameters.

[0150] In some embodiments, the first offset value indicates the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0151] In some embodiments, the first frequency domain resources are used for the control channel between the terminal device 101 and the network device 102, and the second frequency domain resources are used for all channels (e.g., control channels, data channels, etc.) between the terminal device 101 and the terminal device.

[0152] In some embodiments, the first frequency domain resource is the frequency domain resource corresponding to the first channel.

[0153] In some embodiments, the first channel may be a transmission control channel.

[0154] In some embodiments, the name of the first channel is not limited, such as "transmission control channel", "downlink control channel", etc.

[0155] In some embodiments, the first frequency domain resource may be a control resource set (CORESET).

[0156] In some embodiments, the first frequency domain resource may be referred to as a control frequency domain resource, a candidate frequency domain resource, etc., and this disclosure does not limit the name of the first frequency domain resource.

[0157] In some embodiments, the second frequency domain resource is the bandwidth portion allocated to the terminal device.

[0158] In some embodiments, the second frequency domain resource may be a portion of the bandwidth (BWP).

[0159] In some embodiments, the second frequency domain resource may be referred to as a partial bandwidth resource, a bandwidth subset resource, etc., and this disclosure does not limit the name of the second frequency domain resource.

[0160] In some embodiments, the specific value of the first offset value is not limited, and the value of the first offset value can be 0 or not be 0.

[0161] For example, as shown in Figure 3A, the starting positions of the first frequency domain resource and the second frequency domain resource are the same. At this time, the value of the first offset value is 0. The frequency domain resource corresponding to CORESET is the first frequency domain resource, and the frequency domain resource corresponding to BWP is the second frequency domain resource.

[0162] For example, as shown in Figure 3B, the starting positions of the first frequency domain resource and the second frequency domain resource are different. In this case, the value of the first offset value is not 0. The value of the first offset value is the bandwidth size corresponding to the offset.

[0163] In some embodiments, the magnitude of the first offset value can be indicated by the parameter Offset, but this disclosure does not limit the representation of the first offset value.

[0164] Step 2102: Network device 102 sends a first offset value to terminal device 101.

[0165] In some embodiments, network device 102 sends a first offset value to terminal device 101 so that terminal device 101 can determine whether the starting positions of the first frequency domain resource and the second frequency domain are the same, thereby facilitating terminal device 101 to determine the third frequency domain resource.

[0166] In some embodiments, step 2102 is optional, that is, the network device may not send the first offset value to the terminal device, and the terminal device may determine the first offset value through protocol predefinition.

[0167] Step 2103, terminal device 101 determines the first offset value.

[0168] In some embodiments, terminal device 101 can determine the first offset value by receiving the first offset value sent by network device 102.

[0169] In some embodiments, the terminal device 101 may also determine the first offset value based on a protocol predefined method or based on a network device indication method, for example, by determining the first offset value through the starting positions of the first frequency domain resources and the second frequency domain resources specified in the protocol.

[0170] In some embodiments, step 2103 is optional, that is, the terminal device 101 obtains the first offset value by receiving the first offset value sent by the network device.

[0171] Step 2104: Network device 102 sends at least one of the first configuration parameter and the second configuration parameter to terminal device 101.

[0172] In some embodiments, the first configuration parameter is used to configure the first frequency domain resource.

[0173] In some embodiments, the second configuration parameter is used to configure the second frequency domain resource.

[0174] In some embodiments, the first configuration parameter may include at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the following: the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; and a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource.

[0175] In some embodiments, the second configuration parameter may include at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the following: the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; and a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0176] In some embodiments, network device 102 may send at least one of a first configuration parameter and a second configuration parameter to terminal device 101 via configuration signaling. The configuration signaling may be, for example, Radio Resource Control (RRC) signaling, MAC Control Element (MAC CE) signaling, and Downlink Control Information (DCI) signaling. This disclosure does not limit the manner in which network device 102 sends the first configuration parameter and the second configuration parameter to terminal device 101.

[0177] Step 2105: The terminal device 101 determines the first frequency domain resource based on the first configuration parameters.

[0178] In some embodiments, the terminal device 101 can determine the starting position and the ending position of the first frequency domain resource, thereby determining the first frequency domain resource.

[0179] In some embodiments, the terminal device 101 can use the transmission position of the synchronization signal and the PBCH block SSB as the reference point of the first frequency domain resource, use the second offset value to determine the offset between the starting position of the first frequency domain resource and the reference point of the first frequency domain resource, and then determine the first frequency domain resource according to the size of the first frequency domain resource.

[0180] In some embodiments, the terminal device 101 may use the absolute resource location reference point PointA corresponding to the first frequency domain resource as the reference point of the first frequency domain resource, and use the second offset value to determine the offset between the starting position of the first frequency domain resource and the reference point of the first frequency domain resource, and then determine the first frequency domain resource according to the size of the first frequency domain resource.

[0181] Step 2106: Terminal device 101 determines the second frequency domain resource based on at least one of the second configuration parameters, the capabilities of the terminal device, and the type of the terminal device.

[0182] In some embodiments, the type of terminal device 101 may include: Internet of Things (IoT) terminal device and traditional legacy terminal device.

[0183] In some embodiments, since different types of terminal devices 101 may support different frequency domain resources, the capabilities and / or types of terminal devices also need to be considered when determining the second frequency domain resources.

[0184] In some alternative embodiments, the terminal device 101 can determine the second frequency domain resource based on the start position of the second frequency domain resource and the end position of the second frequency domain resource.

[0185] In some optional embodiments, when the start position and end position of the second frequency domain resource received by the terminal device 101 exceed the range of frequency domain resources supported by the terminal device 101, it is necessary to select a portion of the resources indicated by the start position and end position of the second frequency domain resource to determine as the second frequency domain resource, based on the capabilities and / or type of the terminal device.

[0186] In some alternative embodiments, the terminal device 101 may use the transmission position of the synchronization signal and PBCH block (SSB) as a reference point for the second frequency domain resource, and use a third offset value to determine the offset between the starting position of the second frequency domain resource and the reference point of the second frequency domain resource, and then determine the second frequency domain resource according to the size of the second frequency domain resource.

[0187] In some optional embodiments, the terminal device 101 may use the absolute resource location reference point PointA corresponding to the second frequency domain resource as the reference point of the second frequency domain resource, and use the third offset value to determine the offset between the starting position of the second frequency domain resource and the reference point of the second frequency domain resource, and then determine the second frequency domain resource according to the size of the second frequency domain resource.

[0188] In some embodiments, the size of the first frequency domain resource is greater than the size of the second frequency domain resource.

[0189] Step 2107: The terminal device 101 determines the third frequency domain resource based on the first frequency domain resource and the second frequency domain resource.

[0190] In some embodiments, the third frequency domain resources are used by the terminal device 101 to receive or detect downlink control information (DCI).

[0191] In some embodiments, the third frequency domain resource can be the bandwidth of a valid control resource set (VORESET).

[0192] In some embodiments, the third frequency domain resource may be referred to as a valid candidate frequency domain resource, a downlink control information transmittable frequency domain resource, a transmittable frequency domain resource, etc. This disclosure does not limit the name of the third frequency domain resource.

[0193] In some embodiments, the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

[0194] In some alternative embodiments, the size of the third frequency domain resource may also be less than or equal to the size of the overlapping portion of the second frequency domain resource and the first frequency domain resource.

[0195] In some embodiments, when the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource, the terminal device 101 may determine the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource according to a protocol predefined or based on a network device instruction.

[0196] Furthermore, the terminal device 101 can also determine the size of the third frequency domain resource as the minimum of the size of the first frequency domain resource and the size of the second frequency domain resource based on a protocol predefined or a network device instruction.

[0197] In other words, the protocol predefines or the network device indicates that the first frequency domain resource and the second frequency domain resource have the same frequency domain starting point, that is, the starting point of the first frequency domain resource or the second frequency domain resource is the starting point of the third frequency domain resource, and the size of the third frequency domain resource = min{size of the first frequency domain resource, size of the second frequency domain resource}, that is, the size of the third frequency domain resource is the smaller or minimum value of the first frequency domain resource and the second frequency domain resource.

[0198] As shown in Figure 3C, the first frequency domain resource is the bandwidth of the control resource set (CORESET) configured by network device 102 to terminal device 101 via RRC signaling; the second frequency domain resource is the BWP configured by network device 102 to terminal device 101 via RRC signaling; and the bandwidth of the valid CORESET is the third frequency domain resource. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the bandwidth of the valid CORESET used by network device 102 is used by terminal device 101 to send downlink control information. The bandwidth of the valid CORESET used by terminal device 101 is used to receive / detect the downlink control information sent by network device 102. The detection of downlink control information by terminal device 101 can be a blind detection of the downlink control information.

[0199] In some embodiments, when the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource, the terminal device 101 may determine the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource based on protocol predefined or network device indication.

[0200] Furthermore, the terminal device 101 can determine the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource; and based on a protocol predefined value or a network device instruction, determine the size of the third frequency domain resource as a first value, wherein the first value is less than the minimum value.

[0201] The first value satisfies at least one of the following: the first value is a value predefined by the protocol; the first value is a value indicated by the network device; the first value is an even number of frequency domain resource units; the first value is a multiple of 3 frequency domain resource units; the first value is a multiple of 4 frequency domain resource units; the first value is a multiple of 5 frequency domain resource units; the first value is a multiple of 6 frequency domain resource units; the first value is the nearest neighbor value that is less than the minimum value of the first frequency domain resource and the second frequency domain resource; the first value is the nearest neighbor value that is less than the size of the overlap between the first frequency domain resource and the second frequency domain resource; the first value is related to the time domain resource corresponding to the third frequency domain resource.

[0202] The aforementioned frequency domain resource units may be resource blocks (RBs), resource elements (REs), or RBGs, etc., and this disclosure does not limit them.

[0203] In other words, the protocol predefines that the first and second frequency domain resources have the same frequency domain starting point, meaning that the starting point of either the first or second frequency domain resource is the starting point of the third frequency domain resource. The size of the third frequency domain resource is determined by first taking the smaller or minimum value between the first and second frequency domain resources, and then taking the first value downwards. This first value can be predefined by the protocol and can be the nearest smaller even number, a multiple of 3, 4, 5, or 6. For example, if the number determined based on the smaller / minimum value between the first and second frequency domain resources is 7 RBs, then the first value is 6 RBs. Optionally, the first value can be determined based on the time domain resource corresponding to the third frequency domain resource. For example, if the time domain resource size of the third frequency domain resource is 3 time domain resource units (e.g., symbols, time slots, frames, etc., this disclosure does not limit the time domain resource units), then the first value is a multiple of 2 RBs.

[0204] For example, if the number determined based on the smaller / minimum value between the first and second frequency domain resources is 11 RBs, then the first value is 10 RBs. Optionally, the first value can be determined based on the time domain resources corresponding to the third frequency domain resources. For example, if the time domain resource size of the third frequency domain resource is 7 time domain resource units, then the first value is a multiple of 6 RBs.

[0205] As shown in Figure 3D, the first frequency domain resource is the bandwidth of the control resource set configured by network device 102 to terminal device 101 via RRC signaling, with a size of 24 RB. The second frequency domain resource is the BWP configured by network device 102 to terminal device 101 via RRC signaling, with a size of 17 RB. The bandwidth of the valid CORESET is the third frequency domain resource, and its size is a multiple of 6, for example, 12 RB. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the network device uses the bandwidth of the valid CORESET to send downlink control information to the terminal device. The terminal device 101 uses the bandwidth of the valid CORESET to receive / detect the downlink control information sent by network device 102.

[0206] In some embodiments, the terminal device 101 may determine the starting position of the third frequency domain resource as the starting position of the second frequency domain resource based on a protocol predefined or network device instruction, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determine the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource.

[0207] Furthermore, the terminal device 101 can determine the size of the third frequency domain resource as the size of the overlapping portion of the first and second frequency domain resources based on protocol predefined or network device indication.

[0208] In other words, the protocol predefines different frequency domain starting points for the first and second frequency domain resources. The starting point of either the first or second frequency domain resource is the starting point of the third frequency domain resource. The third frequency domain resource is the overlap value between the first and second frequency domain resources.

[0209] For example, as shown in Figure 3E, the third frequency domain resource can completely cover the second frequency domain resource. The first frequency domain resource is the bandwidth of the control resource set configured by network device 102 to the terminal device through RRC signaling, the second frequency domain resource is the BWP configured by network device 102 to the terminal device 101 through RRC signaling, and the bandwidth of the valid CORESET is the third frequency domain resource.

[0210] For example, as shown in Figures 3F and 3G, the third frequency domain resources may not completely cover the second frequency domain resources. The first frequency domain resources are the bandwidth of the control resource set configured by network device 102 to the terminal device via RRC signaling, the second frequency domain resources are the BWP configured by network device 102 to the terminal device 101 via RRC signaling, and the bandwidth of the valid CORESET is the third frequency domain resources.

[0211] In some embodiments, the terminal device 101 may determine the starting position of the third frequency domain resource as the starting position of the second frequency domain resource based on a protocol predefined or a network device instruction, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determine the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource.

[0212] Furthermore, the terminal device 101 determines the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource; and based on a protocol predefined value or a network device instruction, determines the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0213] In other words, the protocol predefines that the starting points of the first and second frequency domain resources are different; that is, the starting point of either the first or second frequency domain resource is the starting point of the third frequency domain resource. Regarding the determination of the size of the third frequency domain resource, the overlap value between the first and second frequency domain resources can be taken first, and then the first value can be taken downwards. This first value can be predefined by the protocol and is the nearest smaller even number, a multiple of 3, 4, 6, or 5. For example, if the number determined based on the smaller or minimum value between the first and second frequency domain resources is 7 RBs, then the first value is 6 RBs. Optionally, the first value can be determined based on the time domain resource corresponding to the third frequency domain resource. For example, if the time domain resource size of the third frequency domain resource is 3 time domain resource units, then the first value is a multiple of 2 RBs.

[0214] For example, as shown in Figure 3H, the first frequency domain resource is the bandwidth of the control resource set configured by network device 102 to terminal device 101 via RRC signaling, with a size of 24 RB. The second frequency domain resource is the BWP configured by network device 102 to terminal device 101 via RRC signaling, with a size of 17 RB. The bandwidth of the valid CORESET is the third frequency domain resource, with a size of 12 RB, which is a multiple of 6. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the network device uses the bandwidth of the valid CORESET to send downlink control information to the terminal device. The terminal device 101 uses the bandwidth of the valid CORESET to receive / detect the downlink control information sent by network device 102.

[0215] In some embodiments, the terminal device 101 may determine the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource plus a third offset value based on a protocol predefined or a network device instruction.

[0216] Furthermore, the terminal device 101 can determine the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource; and based on a protocol predefined value or a network device instruction, determine the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0217] In other words, the protocol predefines the starting point of the third frequency domain resource as the starting point of the first frequency domain. Specifically, to determine the size of the third frequency domain resource, the overlap value between the first and second frequency domain resources can be taken first, and then a first value can be taken downwards. This first value can be predefined by the protocol, taking the nearest smaller even number, or a multiple of 3, 4, 6, or 5. For example, if the number determined based on the smaller or minimum value between the first and second frequency domain resources is 7 RBs, then the first value is 6 RBs. Optionally, the first value can be determined based on the time domain resource corresponding to the third frequency domain resource. For example, if the time domain resource size of the third frequency domain resource is 3 time domain resource units, then the first value is a multiple of 2 RBs.

[0218] In other words, as shown in Figure 3I, the protocol predefines the starting point of the third frequency domain resource based on the starting point of the second frequency domain and the third offset value. The size of the third frequency domain resource is configured by network device 102, and the configuration signaling includes at least one of RRC signaling, MAC CE, and DCI.

[0219] For example, as shown in Figure 3J, the first frequency domain resource is the bandwidth of the control resource set configured by network device 102 to terminal device 101 via RRC signaling, with a size of 24 RB. The second frequency domain resource is the BWP configured by network device 102 to terminal device 101 via RRC signaling, with a size of 17 RB. The bandwidth of the valid CORESET is the third frequency domain resource, with a size of 12 RB, which is a multiple of 6. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the network device uses the bandwidth of the valid CORESET to send downlink control information to the terminal device. The terminal device 101 uses the bandwidth of the valid CORESET to receive / detect the downlink control information sent by network device 102.

[0220] Step 2108: Network device 102 determines the third frequency domain resource based on the first frequency domain resource and the second frequency domain resource.

[0221] In some embodiments, the principle of step 2108 is the same as that of step 2107. Please refer to the embodiments shown in step 2107 and related descriptions, which will not be repeated here.

[0222] Step 2109: Network device 102 sends DCI to terminal device 101 on the third frequency domain resources, wherein terminal device 101 is an Internet of Things (IoT) device.

[0223] In some embodiments, because traditional legacy terminal devices have a larger operating bandwidth (i.e., the BWP allocated to the legacy terminal is not less than the bandwidth of the CORESET carrying the control channel), the frequency domain resources corresponding to the DCI are completely covered by the BWP when the network device sends the DCI to the terminal, thus preventing puncturing. However, IoT terminal devices have a smaller operating bandwidth. When the network device sends the DCI to the terminal, the frequency domain resources corresponding to the DCI cannot be completely covered by the BWP, resulting in puncturing of DCI signals exceeding the BWP range.

[0224] In some embodiments, when the terminal device 101 is an Internet of Things (IoT) device, since the frequency domain resources corresponding to the IoT device are small, in order to avoid the frequency domain resources corresponding to the DCI exceeding the range of the first frequency domain resources (i.e., the occurrence of a punching phenomenon), which would cause the DCI to be lost during transmission, the network device 102 sends the DCI to the terminal device 101 on the third frequency domain resources.

[0225] Step 2110: Network device 102 sends DCI to terminal device on third frequency domain resources or first frequency domain resources, wherein terminal device 101 is a traditional legacy terminal device.

[0226] In some embodiments, since the traditional legacy terminal device has a large operating bandwidth, it can fully cover the third frequency domain resources and the first frequency domain resources. Therefore, the network device can send DCI to the terminal device on the third frequency domain resources or the first frequency domain resources.

[0227] In some embodiments, when a network device sends a DCI to multiple terminal devices, and these terminal devices include IoT devices and traditional legacy terminal devices, the network device can send the DCI to the multiple terminal devices on a third frequency domain resource so that all terminal devices can receive the DCI completely. In some embodiments, when terminal device 101 is a traditional legacy terminal device, since the frequency domain resource corresponding to the traditional legacy terminal device is larger, the network device 102 will not experience puncturing when sending the DCI using either the third or first frequency domain resource. In other words, the DCI will not be lost during transmission. In this case, the network device 102 can send the DCI to the terminal device on either the third or first frequency domain resource.

[0228] In some embodiments, steps 2101 and 2102 are optional. When the terminal device 101 determines the first offset value through protocol predefinition, steps 2101 and 2102 may not be executed.

[0229] In some embodiments, network device 102 also needs to perform the relevant content in steps 2105 and 2106 above.

[0230] In some embodiments, steps 2109 and 2110 are optional. When the terminal device 101 is an Internet of Things (IoT) terminal device, step 2110 is not executed; when the terminal device 101 is a traditional legacy terminal, step 2109 is not executed.

[0231] The communication method involved in the embodiments of this disclosure may include at least one of steps 2101-2110. For example, step 2101 may be implemented as a standalone embodiment, step 2102 may be implemented as a standalone embodiment, step 2107 may be implemented as a standalone embodiment, step 2101+step 2102 may be implemented as a standalone embodiment, step 2101+step 2102+step 2103 may be implemented as a standalone embodiment, step 2107+step 2108+step 2109 may be implemented as a standalone embodiment, step 2107+step 2108+step 2110 may be implemented as a standalone embodiment, and so on, but not limited thereto.

[0232] Figure 2B is an interactive schematic diagram of a communication method provided in an embodiment of this disclosure. As shown in Figure 2B, this embodiment of the disclosure relates to a communication method that can be executed by a communication system, such as the communication system 100 shown in Figure 1B. The communication system 100 includes a terminal device 101 and a network device 102. The interactive method may include the following steps:

[0233] Step 2201, network device 102 determines a first offset value based on the protocol.

[0234] In some embodiments, the principle of step 2201 is the same as that of step 2101. Please refer to the embodiments shown in step 2101 and related descriptions, which will not be repeated here.

[0235] Step 2202: Network device 102 sends a first offset value to terminal device 101.

[0236] In some embodiments, the principle of step 2202 is the same as that of step 2102. Please refer to the embodiments shown in step 2102 and related descriptions, which will not be repeated here.

[0237] Step 2203, terminal device 101 determines the first offset value.

[0238] In some embodiments, the principle of step 2203 is the same as that of step 2103. Please refer to the embodiments shown in step 2103 and related descriptions, which will not be repeated here.

[0239] Step 2204: Network device 102 sends at least one of the first configuration parameters and the second configuration parameters to terminal device 101.

[0240] In some embodiments, the principle of step 2204 is the same as that of step 2104. Please refer to the embodiments shown in step 2104 and related descriptions, which will not be repeated here.

[0241] Step 2205: Network device 102 sends DCI on a first frequency domain resource at a first opportune moment, wherein the first frequency domain resource corresponding to the first opportune moment is aligned with the second frequency domain resource in the high-frequency direction.

[0242] In some embodiments, the timing can be a monitoring occupancy pair (MO pair).

[0243] In some embodiments, the first frequency domain resource corresponding to the first timing is aligned with the second frequency domain resource in the high-frequency direction. In other words, the punching method in the second frequency domain resource corresponding to the first timing is, for example, punching from top to bottom as shown in FIG3K.

[0244] In some embodiments, network device 102 transmits DCI on a first frequency domain resource at a first opportune moment, so as to ensure that terminal device 101 can receive the complete DCI at the cost of latency.

[0245] In other words, as shown in Figure 3K, when the network device transmits DCI at the first opportune moment, the high-frequency region of DCI exceeding the BWP bandwidth will be punctured. Therefore, to ensure that the terminal device can receive the complete DCI, the network device can transmit DCI to the terminal device again at the second opportune moment. At this time, the punctured DCI from the first opportune moment (i.e., the portion of DCI not received by the terminal device at the first opportune moment) is completely covered by the second actual BWP, and the terminal device can receive the punctured portion of DCI from the first opportune moment at the second opportune moment. In other words, the network device transmits DCI to the terminal device multiple times (i.e., sacrificing latency) so that the terminal device can receive the complete DCI. In some embodiments, the overlapping portion of the first frequency domain resources and the second frequency domain resources corresponding to the first opportune moment, and the overlapping portion of the first frequency domain resources and the second frequency domain resources corresponding to the second opportune moment, constitute the complete first frequency domain resources.

[0246] In other words, as shown in Figure 3K, the overlapping portion of BWP and DCI corresponding to the first timing point and the overlapping portion of BWP and DCI corresponding to the second timing point can form a complete DCI.

[0247] In some embodiments, the network device may also transmit DCI on the first frequency domain resource at other times than the first and second times, which is not limited in this disclosure.

[0248] Step 2206: Network device 102 transmits DCI on the first frequency domain resource at the second timing, wherein the first frequency domain resource corresponding to the second timing is aligned with the second frequency domain resource from the low frequency direction.

[0249] In some embodiments, the first frequency domain resource corresponding to the second timing is aligned with the second frequency domain resource from the low frequency direction. In other words, the punching method in the second frequency domain resource corresponding to the second timing is, for example, punching from bottom to top as shown in FIG3K.

[0250] In some embodiments, network device 102 transmits DCI on a first frequency domain resource at a second timing to ensure that terminal device 101 can receive the complete DCI at the cost of latency.

[0251] In some embodiments, steps 2201 and 2202 are optional. When the terminal device 101 determines the first offset value through protocol predefinition, steps 2201 and 2202 may not be executed.

[0252] In some embodiments, steps 2205 and 2206 are optional. That is, when the network device 102 transmits DCI on the first frequency domain resource at a first time, the network device 102 may not perform step 2206; when the network device 102 transmits DCI on the first frequency domain resource at a second time, the network device 102 may not perform step 2204.

[0253] It should be understood that steps 2205 and 2206 can be executed simultaneously, that is, network device 102 sends DCI on the first frequency domain resource at the first time and at the second time.

[0254] The communication method involved in the embodiments of this disclosure may include at least one of steps 2201-2206. For example, step 2201 may be implemented as a standalone embodiment, step 2202 may be implemented as a standalone embodiment, step 2206 may be implemented as a standalone embodiment, step 2201+step 2202 may be implemented as a standalone embodiment, step 2201+step 2202+step 2203 may be implemented as a standalone embodiment, step 2203+step 2204+step 2205 may be implemented as a standalone embodiment, step 2203+step 2204+step 2206 may be implemented as a standalone embodiment, and so on, but not limited thereto.

[0255] Figure 4 is a schematic flowchart of a communication method for a terminal device according to an embodiment of the present disclosure. As shown in Figure 4, this disclosure relates to a communication method, which includes:

[0256] Step 4101: Determine the third frequency domain resource based on the first and second frequency domain resources.

[0257] In some embodiments, the first frequency domain resource is the frequency domain resource corresponding to the first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the terminal device to receive or detect downlink control information (DCI); the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

[0258] In some alternative embodiments, the method further includes: determining a first offset value, or receiving a first offset value from a network device; wherein the first offset value represents an offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0259] In some alternative embodiments, the size of the third frequency domain resource is less than or equal to the size of the overlap between the second frequency domain resource and the first frequency domain resource.

[0260] In some alternative embodiments, the method further includes receiving or detecting DCI on a third frequency domain resource, wherein the terminal device is an Internet of Things (IoT) terminal device.

[0261] In some alternative embodiments, the method further includes receiving or detecting DCI on a third frequency domain resource or on a first frequency domain resource, wherein the terminal device is a legacy terminal device.

[0262] In some alternative embodiments, the method further includes at least one of the following: receiving at least one of a first configuration parameter and a second configuration parameter sent by a network device, wherein the first configuration parameter is used to configure a first frequency domain resource and the second configuration parameter is used to configure a second frequency domain resource; determining the first frequency domain resource based on the first configuration parameter; and determining the second frequency domain resource based on at least one of the second configuration parameter, the capability of the terminal device, and the type of the terminal device.

[0263] In some optional embodiments, the first configuration parameter includes at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource; the second configuration parameter includes at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0264] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource; and determining the size of the third frequency domain resource as the minimum value between the size of the first and second frequency domain resources.

[0265] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as either the starting position of the first or second frequency domain resource, wherein the starting position of the first and second frequency domain resources is the same; determining the minimum value between the size of the first and second frequency domain resources; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the minimum value.

[0266] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource; and determining the size of the third frequency domain resource as the size of the overlapping portion of the first and second frequency domain resources.

[0267] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource; determining the size of the overlapping portion of the first and second frequency domain resources; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0268] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource plus a third offset value; determining the size of the overlapping portion of the first and second frequency domain resources; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0269] In some alternative embodiments, the first value satisfies at least one of the following: the first value is a value predefined by the protocol; the first value is a value indicated by the network device; the first value is an even number of frequency domain resource units; the first value is a multiple of 3 frequency domain resource units; the first value is a multiple of 4 frequency domain resource units; the first value is a multiple of 5 frequency domain resource units; the first value is a multiple of 6 frequency domain resource units; the first value is the nearest neighbor value that is less than the minimum value of the first frequency domain resource and the second frequency domain resource; the first value is the nearest neighbor value that is less than the size of the overlap between the first frequency domain resource and the second frequency domain resource; the first value is related to the time domain resource corresponding to the third frequency domain resource.

[0270] The optional implementation of step 4101 can be found in the optional implementation of step 2107 in Figure 2A, and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0271] Figure 5 is a schematic flowchart of a communication method for a terminal device according to an embodiment of the present disclosure. As shown in Figure 5, this disclosure relates to a communication method, which includes:

[0272] Step 5101: At different times, receive or detect downlink control information (DCI) on the first frequency domain resources.

[0273] In some embodiments, the DCI on the first frequency domain resources corresponding to different times is the same, and the overlapping part of the first frequency domain resources and the second frequency domain resources corresponding to different times is different. The first frequency domain resource is the frequency domain resource corresponding to the first channel, and the second frequency domain resource is the bandwidth part allocated to the terminal device. The size of the first frequency domain resource is larger than the size of the second frequency domain resource.

[0274] In some alternative embodiments, receiving or detecting downlink control information (DCI) on a first frequency domain resource at different times includes: receiving or detecting DCI on a first frequency domain resource at a first time, wherein the first frequency domain resource corresponding to the first time is aligned with the second frequency domain resource in the high-frequency direction; and receiving or detecting DCI on a first frequency domain resource at a second time, wherein the first frequency domain resource corresponding to the second time is aligned with the second frequency domain resource in the low-frequency direction.

[0275] In some optional embodiments, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the first timing, and the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the second timing, constitute a complete first frequency domain resource.

[0276] In some alternative embodiments, the method further includes: determining a first offset value, or receiving a first offset value from a network device; wherein the first offset value represents an offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0277] In some alternative embodiments, the method further includes at least one of the following: receiving at least one of a first configuration parameter and a second configuration parameter sent by a network device, wherein the first configuration parameter is used to configure a first frequency domain resource and the second configuration parameter is used to configure a second frequency domain resource; determining the first frequency domain resource based on the first configuration parameter; and determining the second frequency domain resource based on at least one of the second configuration parameter, the capability of the terminal device, and the type of the terminal device.

[0278] In some optional embodiments, the first configuration parameter includes at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource; the second configuration parameter includes at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0279] In some alternative embodiments, the terminal device is an IoT terminal device.

[0280] The optional implementations of step 5101 can be found in the optional implementations of steps 2205 and 2206 in Figure 2B, as well as other related parts in the embodiments involved in Figure 2B, which will not be repeated here.

[0281] Figure 6 is a schematic flowchart of a communication method for a network device according to an embodiment of the present disclosure. As shown in Figure 6, this disclosure relates to a communication method, which includes:

[0282] Step 6101: Determine the third frequency domain resource based on the first and second frequency domain resources.

[0283] In some embodiments, the first frequency domain resource is the frequency domain resource corresponding to the first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the network device to send downlink control information (DCI); the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

[0284] In some alternative embodiments, the method further includes: determining a first offset value, and / or sending the first offset value to a terminal device; wherein the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0285] In some alternative embodiments, the size of the third frequency domain resource is less than or equal to the size of the overlap between the second frequency domain resource and the first frequency domain resource.

[0286] In some alternative embodiments, the method further includes transmitting DCI over a third frequency domain resource, wherein the terminal device is an Internet of Things (IoT) terminal device.

[0287] In some alternative embodiments, the method further includes transmitting DCI on a third frequency domain resource or on a first frequency domain resource, wherein the terminal device is a legacy terminal device.

[0288] In some alternative embodiments, the method further includes at least one of the following: sending at least one of a first configuration parameter and a second configuration parameter to a terminal device, wherein the first configuration parameter is used to configure a first frequency domain resource, the second configuration parameter is used to configure a second frequency domain resource, and the second configuration parameter is related to at least one of the capabilities of the terminal device and the type of the terminal device.

[0289] In some optional embodiments, the first configuration parameter includes at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource; the second configuration parameter includes at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0290] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource; and determining the size of the third frequency domain resource as the minimum value between the size of the first and second frequency domain resources.

[0291] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as either the starting position of the first or second frequency domain resource, wherein the starting position of the first and second frequency domain resources is the same; determining the minimum value between the size of the first and second frequency domain resources; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the minimum value.

[0292] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource; and determining the size of the third frequency domain resource as the size of the overlapping portion of the first and second frequency domain resources.

[0293] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource, wherein the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource; determining the size of the overlapping portion of the first and second frequency domain resources; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0294] In some optional embodiments, determining a third frequency domain resource based on the first and second frequency domain resources includes: determining the starting position of the third frequency domain resource as the starting position of the first frequency domain resource or the starting position of the second frequency domain resource plus a third offset value; determining the size of the overlapping portion of the first and second frequency domain resources; and determining the size of the third frequency domain resource as a first value, wherein the first value is less than the size of the overlapping portion.

[0295] In some alternative embodiments, the first value satisfies at least one of the following: the first value is a value predefined by the protocol; the first value is a value indicated by the network device; the first value is an even number of frequency domain resource units; the first value is a multiple of 3 frequency domain resource units; the first value is a multiple of 4 frequency domain resource units; the first value is a multiple of 5 frequency domain resource units; the first value is a multiple of 6 frequency domain resource units; the first value is the nearest neighbor value that is less than the minimum value of the first frequency domain resource and the second frequency domain resource; the first value is the nearest neighbor value that is less than the size of the overlap between the first frequency domain resource and the second frequency domain resource; the first value is related to the time domain resource corresponding to the third frequency domain resource.

[0296] The optional implementation of step 6101 can be found in the optional implementation of step 2107 in Figure 2A, and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0297] Figure 7 is a schematic flowchart of a communication method for a network device according to an embodiment of the present disclosure. As shown in Figure 7, the present disclosure relates to a communication method, which includes:

[0298] Step 7101: At different times, transmit downlink control information (DCI) on the first frequency domain resources.

[0299] In some embodiments, the DCI on the first frequency domain resources corresponding to different times is the same, and the overlapping part of the first frequency domain resources and the second frequency domain resources corresponding to different times is different. The first frequency domain resource is the frequency domain resource corresponding to the first channel, and the second frequency domain resource is the bandwidth part allocated to the terminal device. The size of the first frequency domain resource is larger than the size of the second frequency domain resource.

[0300] In some optional embodiments, transmitting downlink control information (DCI) on a first frequency domain resource includes: transmitting DCI on a first frequency domain resource at a first opportune time, wherein the first frequency domain resource corresponding to the first opportune time is aligned with the second frequency domain resource in a high-frequency direction; and transmitting DCI on a first frequency domain resource at a second opportune time, wherein the first frequency domain resource corresponding to the second opportune time is aligned with the second frequency domain resource in a low-frequency direction.

[0301] In some optional embodiments, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the first timing, and the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the second timing, constitute a complete first frequency domain resource.

[0302] In some alternative embodiments, the method further includes: determining a first offset value, and / or sending the first offset value to a terminal device; wherein the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

[0303] In some alternative embodiments, the method further includes at least one of the following: sending at least one of a first configuration parameter and a second configuration parameter to a terminal device, wherein the first configuration parameter is used to configure a first frequency domain resource, the second configuration parameter is used to configure a second frequency domain resource, and the second configuration parameter is related to at least one of the capabilities of the terminal device and the type of the terminal device.

[0304] In some optional embodiments, the first configuration parameter includes at least one of the following: the size of the first frequency domain resource; a reference point of the first frequency domain resource, the reference point including any one of the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource; a second offset value, the second offset value representing the offset between the start position of the first frequency domain resource and the reference point of the first frequency domain resource; the second configuration parameter includes at least one of the following: the size of the second frequency domain resource; a reference point of the second frequency domain resource, the reference point including any one of the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource; a third offset value, the third offset value representing the offset between the start position of the second frequency domain resource and the reference point of the second frequency domain resource.

[0305] The optional implementations of step 7101 can be found in the optional implementations of steps 2205 and 2206 in Figure 2B, as well as other related parts in the embodiments involved in Figure 2B, which will not be repeated here.

[0306] Figure 8A is an interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure, applied to a communication system. As shown in Figure 8A, the embodiments of the present disclosure relate to a communication method, which includes:

[0307] Step 8101: The terminal device 101 determines the third frequency domain resource based on the first frequency domain resource and the second frequency domain resource.

[0308] The optional implementation of step 8101 can be found in step 2107 of Figure 2A and the optional implementation of step 4101 of Figure 4, as well as other related parts in the embodiments involved in Figures 2A and 4, which will not be repeated here.

[0309] Step 8102: Network device 102 determines the third frequency domain resource based on the first frequency domain resource and the second frequency domain resource.

[0310] The optional implementation of step 8102 can be found in the optional implementation of step 2108 in Figure 2A and step 6101 in Figure 6, as well as other related parts in the embodiments involved in Figures 2A and 6, which will not be repeated here.

[0311] Figure 8B is an interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure, applied to a communication system. As shown in Figure 8B, the embodiments of the present disclosure relate to a communication method, which includes:

[0312] Step 8201: Network device 102 sends downlink control information (DCI) to terminal device 101 on the first frequency domain resource at different times.

[0313] Optional implementations of step 8201 can be found in steps 2205 and 2206 of Figure 2B, steps 5101 of Figure 5 and steps 7101 of Figure 7, as well as other related parts in the embodiments involved in Figures 2B, 5 and 7, which will not be repeated here.

[0314] The following are specific solutions provided by embodiments of this disclosure:

[0315] Option 1: The CORESET configuration remains the legacy configuration, but the effective candidate resource range or the range that DCI can transmit (i.e., the third frequency domain resource mentioned above) is determined by the smaller value between the CORESET bandwidth (i.e., the first frequency domain resource mentioned above) and the BWP bandwidth (i.e., the second frequency domain resource mentioned above).

[0316] Case 1: offset (i.e., the first offset value mentioned above) is 0; Case 2: offset value can be configured and is not limited to 0.

[0317] For Case 1, when the narrowband BWP bandwidth is small, the candidate resource range or DCI transmission range is limited to the BWP range. For Case 2, mapping is required based on the bandwidth of the overlap between the CORESET bandwidth and the BWP bandwidth.

[0318] Option 2: The concept of listening timing (MO pair), meaning that a complete coreset can be transmitted completely on different MOs for IoT. The first MO is punched from the top, and the second from the bottom. This sacrifices latency to ensure that complete DCI can be received. Timing reference points are also provided.

[0319] Option 3: Punch holes, do not perform any processing. This option depends on the final minimum bandwidth size. If it is not less than 3MHz, then the possibility of reusing the NR solution is still very high.

[0320] Option 4: Create a second-order coreset, where the small bandwidth in the middle can be used by IoT devices, while the outer perimeter can be received by normal UEs.

[0321] Example 1: The network device determines the frequency domain resource range for transmitting downlink control information based on third frequency domain resources. Furthermore, from the perspective of the terminal device, the terminal device determines the frequency domain range for receiving / blindly detecting downlink control information based on the third frequency domain resources. The third frequency domain resources are determined based on first and / or second frequency domain resources. How are the first and second frequency domain resources functionally defined? The first frequency domain resources are configured by the network device for the terminal device, and the configuration signaling includes at least one of RRC signaling, MAC CE, and DCI. The second frequency domain resources are configured by the network device for the terminal device, and the configuration signaling includes at least one of RRC signaling, MAC CE, and DCI, and / or determined by the capabilities / type of the terminal device.

[0322] The parameters for determining the first frequency domain resource include at least one of the following: the size of the first frequency domain resource, for example, N RBs; the reference point of the first frequency domain resource, including: the start point of the first frequency domain resource; the end point of the first frequency domain resource; the SSB transmission position, point A (the reference point for the absolute position of the resource); and the first offset (i.e., the second offset value mentioned above).

[0323] The second frequency domain resource determination parameters include at least one of the following: the second frequency shift resource size, for example, N RBs; the second frequency domain resource reference point (for example, the first frequency domain resource start point); including the second frequency domain resource start point; the second frequency domain resource end point; the SSB transmission position, point A (the reference point for the absolute resource position); and the second offset (i.e., the third offset value mentioned above).

[0324] The aforementioned network devices / terminal devices determine third frequency domain resources using at least one of the following methods:

[0325] Method 1:

[0326] The protocol predefines that the first and second frequency domain resources have the same frequency domain starting point, meaning that the starting point of either the first or second frequency domain resource is the starting point of the third frequency domain resource. The size of the third frequency domain resource = min{size of the first frequency domain resource, size of the second frequency domain resource}, that is, the size of the third frequency domain resource is the smaller / minimum value between the first and second frequency domain resources.

[0327] In one implementation, as shown in Figure 3C, the first frequency domain resource is the bandwidth of the control resource set configured by the network device to the terminal device via RRC signaling; the second frequency domain resource is the BWP configured by the network device to the terminal device via RRC signaling; and the bandwidth of the valid CORESET is the third frequency domain resource. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the bandwidth of the valid CORESET is used by the network device to send downlink control information to the terminal device. The terminal device uses the bandwidth of the valid CORESET to receive / blindly detect the downlink control information sent by the network device.

[0328] Method 2:

[0329] The protocol predefines that the first and second frequency domain resources have the same frequency domain starting point; that is, the starting point of the first or second frequency domain resource is the starting point of the third frequency domain resource. The size of the third frequency domain resource is determined by first taking the smaller / minimum value between the first and second frequency domain resources, and then taking the first value downwards. This first value can be predefined by the protocol, taking the nearest smaller even number, or a multiple of 3, 4, 6, or 5. For example, if the number determined based on the smaller / minimum value between the first and second frequency domain resources is 7, then the first value is 6. Optionally, the first value can be determined based on the time domain resource corresponding to the third resource; for example, if the time domain resource size of the third resource is 3, then the first value is a multiple of 2.

[0330] In one implementation, as shown in Figure 3D, the first frequency domain resource is the bandwidth of the control resource set configured by the network device to the terminal device via RRC signaling, with a size of 24 RB. The second frequency domain resource is the BWP configured by the network device to the terminal device via RRC signaling, with a size of 17 RB. The bandwidth of the valid CORESET is the third frequency domain resource, with a size that is a multiple of 6, i.e., 12. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the network device uses the bandwidth of the valid CORESET to send downlink control information to the terminal device. The terminal device uses the bandwidth of the valid CORESET to receive / blindly detect the downlink control information sent by the network device.

[0331] Method 3:

[0332] The protocol predefines that the starting points of the first and second frequency domain resources are different. The starting point of either the first or second frequency domain resource is the starting point of the third frequency domain resource. The third frequency domain resource is the overlap value between the first and second frequency domain resources.

[0333] In one implementation, as shown in Figure 3E, the first frequency domain resource is the bandwidth of the control resource set configured by the network device to the terminal device via RRC signaling; the second frequency domain resource is the BWP configured by the network device to the terminal device via RRC signaling; and the bandwidth of the valid CORESET is the third frequency domain resource. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the network device uses the bandwidth of the valid CORESET to send downlink control information to the terminal device. The terminal device uses the bandwidth of the valid CORESET to receive / blindly detect the downlink control information sent by the network device.

[0334] Method 4:

[0335] The protocol predefines that the starting points of the first and second frequency domain resources are different; that is, the starting point of the first or second frequency domain resource is the starting point of the third frequency domain resource. The size of the third frequency domain resource is determined by first taking the overlap value between the first and second frequency domain resources, and then taking the first value downwards. This first value can be predefined by the protocol, taking the nearest smaller even number, or a multiple of 3, 4, 6, or 5. For example, if the number determined based on the smaller / minimum value between the first and second frequency domain resources is 7, then the first value is 6. Optionally, the first value can be determined based on the time domain resource corresponding to the third resource; for example, if the time domain resource size of the third resource is 3, then the first value is a multiple of 2.

[0336] In one implementation, as shown in Figure 3H, the first frequency domain resource is the bandwidth of the control resource set configured by the network device to the terminal device via RRC signaling, with a size of 24 RB. The second frequency domain resource is the BWP configured by the network configuration to the terminal device via RRC signaling, with a size of 17 RB. The bandwidth of the valid CORESET is the third frequency domain resource, with a size that is a multiple of 6, i.e., 12. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the network device uses the bandwidth of the valid CORESET to send downlink control information to the terminal device. The terminal device uses the bandwidth of the valid CORESET to receive / blindly detect the downlink control information sent by the network device.

[0337] Method 5:

[0338] The protocol predefines the starting point of the third frequency domain resource based on the starting point of the first or second frequency domain and a second offset. The size of the third frequency domain resource is determined by first taking the overlap value between the first and second frequency domain resources, and then taking the first value downwards. This first value can be predefined by the protocol and is the nearest smaller even number, a multiple of 3, 4, 6, or 5. For example, if the number determined based on the smaller / minimum value between the first and second frequency domain resources is 7, then the first value is 6. Optionally, the first value can be determined based on the time domain resource corresponding to the third resource; for example, if the time domain resource size of the third resource is 3, then the first value is a multiple of 2.

[0339] In one implementation, as shown in Figure 3I, the first frequency domain resource is the bandwidth of the control resource set configured by the network device to the terminal device via RRC signaling, with a size of 24 RB. The second frequency domain resource is the BWP configured by the network configuration to the terminal device via RRC signaling, with a size of 17 RB. The bandwidth of the valid CORESET is the third frequency domain resource, with a size that is a multiple of 6, i.e., 12. In this implementation, the time domain resources corresponding to CORESET and valid CORESET are the same. Furthermore, the network device uses the bandwidth of the valid CORESET to send downlink control information to the terminal device. The terminal device uses the bandwidth of the valid CORESET to receive / blindly detect the downlink control information sent by the network device.

[0340] Method 6:

[0341] The protocol predefines the starting point of the third frequency domain resource based on the starting point of the first or second frequency domain, and / or the second offset. The size of the third frequency domain resource is configured by the base station, and the configuration signaling includes at least one of RRC signaling, MAC CE, and DCI.

[0342] Example 2:

[0343] The network device configures control resource sets for the terminal device and determines the frequency domain resource range for downlink control information transmission based on the frequency domain ranges of the at least two control resource sets. Furthermore, from the terminal device's perspective, the terminal device determines the frequency domain range for downlink control information reception / blind detection based on the frequency domain ranges of the at least two control resource sets. What are the aforementioned candidate resource ranges?

[0344] Specifically, the frequency domain resources of the control resource set for the first listening opportunity are aligned with the second frequency domain resources of the terminal device in the high-frequency direction. The frequency domain resources of the control resource set for the second listening opportunity are aligned with the second frequency domain resources of the terminal device in the low-frequency direction. The second frequency domain resources are configured to the terminal device by the network device and / or determined by the capabilities / type of the terminal device.

[0345] Example 3:

[0346] Network devices determine the frequency domain resource range for downlink control information transmission based on third frequency domain resources. Furthermore, from the perspective of terminal devices, the terminal devices determine the frequency domain range for downlink control information reception / blind detection based on the third frequency domain resources. The third frequency domain resources are determined based on the puncturing of the first and second frequency domain resources. [Illustration diagram of resource puncturing?]

[0347] The first frequency domain resource is configured by the network device to the terminal device. The second frequency domain resource is configured by the network device to the terminal device, and / or determined by the capabilities / type of the terminal device.

[0348] The parameters for determining the first frequency domain resource include at least one of the following: the size of the first frequency shift resource, for example, N RBs; the starting point of the first frequency domain resource; the ending point of the first frequency domain resource; the reference point of the first frequency domain resource; and the first offset.

[0349] The parameters for determining the second frequency domain resource include at least one of the following: the size of the second frequency shift resource, for example, N RBs; the starting point of the second frequency domain resource; the ending point of the second frequency domain resource; the reference point of the second frequency domain resource (for example, the starting point of the first frequency domain resource); and the second offset.

[0350] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal device in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by the network device (e.g., access network device, core network functional node, core network device, etc.) in any of the above methods.

[0351] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0352] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0353] Figure 9A is a schematic diagram of the structure of a terminal device provided according to an embodiment of the present disclosure. The terminal device 9100 is used to perform any of the above methods. In some embodiments, as shown in Figure 9A, the terminal device 9100 may include at least one of a processing module 9101, a transceiver module 9102, etc. In some embodiments, the processing module 9101 is used to determine a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource, wherein the first frequency domain resource is the frequency domain resource corresponding to the first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the terminal device to receive or detect downlink control information (DCI); the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource. Optionally, the transceiver module 9102 is used to perform at least one of the communication steps (e.g., steps 2102, 2104, 2109, and 2110, but not limited thereto) performed by the terminal device in any of the above methods, which will not be described in detail here. Optionally, the processing module 9101 described above is used to execute at least one of the other steps executed by the terminal device in any of the above methods (e.g., steps 2101, 2103, 2105, 2106, 2107 and 2108, but not limited thereto), which will not be elaborated here.

[0354] Figure 9B is a schematic diagram of the structure of a terminal device provided according to an embodiment of the present disclosure. The terminal device 9200 is used to perform any of the above methods. In some embodiments, as shown in Figure 9B, the terminal device 9200 may include at least one of a transceiver module 9201, a processing module 9202, etc. In some embodiments, the transceiver module 9201 is used to receive or detect downlink control information (DCI) on a first frequency domain resource at different times, wherein the DCI on the first frequency domain resource corresponding to different times is the same, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to different times is different, the first frequency domain resource is the frequency domain resource corresponding to the first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the size of the first frequency domain resource is larger than the size of the second frequency domain resource. Optionally, the transceiver module 9201 is used to perform at least one of the communication steps (e.g., steps 2202, 2204, 2205, and 2206, but not limited thereto) performed by the terminal device in any of the above methods, which will not be described in detail here. Optionally, the processing module 9202 is used to execute at least one of the other steps (such as steps 2201 and 2203, but not limited thereto) executed by the terminal device in any of the above methods, which will not be described in detail here.

[0355] Figure 9C is a schematic diagram of the structure of a network device provided according to an embodiment of the present disclosure. The network device 9300 is used to perform any of the above methods. In some embodiments, as shown in Figure 9C, the network device 9200 may include at least one of a processing module 9301, a transceiver module 9302, etc. In some embodiments, the processing module 9301 is used to determine a third frequency domain resource based on a first frequency domain resource and a second frequency domain resource, wherein the first frequency domain resource is the frequency domain resource corresponding to the first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the network device to transmit downlink control information (DCI); the size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource. Optionally, the transceiver module 9302 is used to perform at least one of the communication steps (e.g., steps 2102, 2104, 2109, and 2110, but not limited thereto) performed by the network device in any of the above methods, which will not be elaborated further here. Optionally, the processing module 9301 is used to execute at least one of the other steps (such as steps 2101, 2103, 2105, 2106, 2107 and 2108, but not limited thereto) performed by the network device in any of the above methods, which will not be described in detail here.

[0356] Figure 9D is a schematic diagram of the structure of a network device provided according to an embodiment of the present disclosure. The network device 9400 is used to perform any of the above methods. In some embodiments, as shown in Figure 9D, the network device 9400 may include at least one of a transceiver module 9401, a processing module 9402, etc. In some embodiments, the transceiver module 9401 is used to transmit downlink control information (DCI) on a first frequency domain resource at different times, wherein the DCI on the first frequency domain resource corresponding to different times is the same, the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to different times is different, the first frequency domain resource is the frequency domain resource corresponding to the first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the size of the first frequency domain resource is larger than the size of the second frequency domain resource. Optionally, the transceiver module 9401 is used to perform at least one of the communication steps (e.g., steps 2202, 2204, 2205, and 2206, but not limited thereto) performed by the network device in any of the above methods, which will not be elaborated further here. Optionally, the processing module 9402 is used to execute at least one of the other steps (e.g., steps 2201 and 2203, but not limited thereto) performed by the network device in any of the above methods, which will not be elaborated here.

[0357] Figure 10A is a schematic diagram of the structure of the communication device 10100 proposed in an embodiment of this disclosure. The communication device 10100 can be a network device (e.g., access network device, core network device, etc.), a terminal device (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 10100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0358] As shown in Figure 10A, the communication device 10100 is used to execute any of the above methods. In some embodiments, the communication device 10100 includes one or more processors 10101. The processor 10101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 10100 is used to execute any of the above methods. Optionally, one or more processors 10101 are used to invoke instructions to cause the communication device 10100 to execute any of the above methods.

[0359] In some embodiments, the communication device 10100 further includes one or more transceivers 10102. When the communication device 10100 includes one or more transceivers 10102, the transceiver 10102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps 2102, 2104, 2109, 2110, 2202, 2204, 2205, 2206, 5101, and 7101, but not limited thereto), and the processor 10101 performs at least one of other steps (e.g., steps 2101, 2103, 2105, 2106, 2107, 2108, 2201, 2203, 4101, and 6101, but not limited thereto). In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated together. Optionally, terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface can be used interchangeably; terms such as transmitter, transmitter unit, transmitter, and transmitter circuit can be used interchangeably; and terms such as receiver, receiver unit, receiver, and receiver circuit can be used interchangeably.

[0360] In some embodiments, the communication device 10100 further includes one or more memories 10103 for storing data and / or instructions. Optionally, one or more processors 10101 are used to invoke instructions stored in the memory 10103 to cause the communication device 10100 to perform any of the above methods. Optionally, all or part of the memory 10103 may also be located outside the communication device 10100. In an optional embodiment, the communication device 10100 may include one or more interface circuits 10104. Optionally, the interface circuit 10104 is connected to the memory 10102, and the interface circuit 10104 can be used to receive data and / or instructions from the memory 10102 or other devices, and can be used to send data and / or instructions to the memory 10102 or other devices. For example, the interface circuit 10104 can read data and / or instructions stored in the memory 10102 and send the data and / or instructions to the processor 10101.

[0361] The communication device 10100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 10100 described in this disclosure is not limited thereto, and the structure of the communication device 10100 may not be limited by FIG10A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (10) others, etc.

[0362] Figure 10B is a schematic diagram of the structure of chip 10200 according to an embodiment of this disclosure. For cases where the communication device 10100 can be a chip or a chip system, please refer to the schematic diagram of chip 10200 shown in Figure 10B, but it is not limited thereto.

[0363] Chip 10200 includes one or more processors 10201. Chip 10200 is used to perform any of the above methods.

[0364] In some embodiments, chip 10200 further includes one or more interface circuits 10202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 10200 further includes one or more memories 10203 for storing data and / or instructions. Optionally, all or part of the memories 10203 may be located outside of chip 10200. Optionally, interface circuit 10202 is connected to memory 10203, and interface circuit 10202 can be used to receive data and / or instructions from memory 10203 or other devices, and interface circuit 10202 can be used to send data and / or instructions to memory 10203 or other devices. For example, interface circuit 10202 can read data and / or instructions stored in memory 10203 and send the data and / or instructions to processor 10201.

[0365] In some embodiments, the interface circuit 10202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps 2102, 2104, 2109, 2110, 2202, 2204, 2205, 2206, 5101, and 7101, but not limited thereto). The interface circuit 10202 performing the communication steps such as sending and / or receiving in the above-described method refers, for example, to the interface circuit 10202 performing data and / or instruction interaction between the processor 10201, the chip 10200, the memory 10203, or the transceiver device. In some embodiments, the processor 10201 performs at least one of other steps (e.g., steps 2101, 2103, 2105, 2106, 2107, 2108, 2201, 2203, 4101, and 6101, but not limited thereto).

[0366] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0367] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0368] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0369] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that, The method is executed by a terminal device, and the method includes: Based on the first and second frequency domain resources, the third frequency domain resources are determined. Wherein, the first frequency domain resource is the frequency domain resource corresponding to the first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the terminal device to receive or detect downlink control information (DCI). The size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

2. The method according to claim 1, characterized in that, The method further includes: Determine the first offset value, or receive the first offset value from the network device; Wherein, the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

3. The method according to claim 1 or 2, characterized in that, The size of the third frequency domain resource is less than or equal to the size of the overlapping portion between the second frequency domain resource and the first frequency domain resource.

4. The method according to any one of claims 1 to 3, characterized in that, The method further includes: The DCI is received or detected on the third frequency domain resource, wherein the terminal device is an Internet of Things (IoT) terminal device.

5. The method according to any one of claims 1 to 3, characterized in that, The method further includes: The DCI is received or detected on the third frequency domain resource or on the first frequency domain resource, wherein the terminal device is a traditional legacy terminal device.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes at least one of the following: The network device receives at least one of a first configuration parameter and a second configuration parameter, wherein the first configuration parameter is used to configure the first frequency domain resource and the second configuration parameter is used to configure the second frequency domain resource. Based on the first configuration parameters, the first frequency domain resource is determined; The second frequency domain resource is determined based on at least one of the second configuration parameter, the capability of the terminal device, and the type of the terminal device.

7. The method according to claim 6, characterized in that, The first configuration parameter includes at least one of the following: The size of the first frequency domain resource; The reference point of the first frequency domain resource includes any one of the following: the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource. The second offset value represents the offset between the starting position of the first frequency domain resource and the reference point of the first frequency domain resource; The second configuration parameter includes at least one of the following: The size of the second frequency domain resource; The reference point of the second frequency domain resource includes any one of the following: the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource. The third offset value represents the offset between the starting position of the second frequency domain resource and the reference point of the second frequency domain resource.

8. The method according to any one of claims 1 to 7, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be either the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource. The size of the third frequency domain resource is determined to be the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource.

9. The method according to any one of claims 1 to 7, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be either the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource. Determine the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource; The size of the third frequency domain resource is determined to be a first value, which is less than the minimum value.

10. The method according to any one of claims 1 to 7, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be the starting position of the second frequency domain resource, and the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, the starting position of the third frequency domain resource is determined to be the starting position of the first frequency domain resource, and the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource. The size of the third frequency domain resource is determined to be the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource.

11. The method according to any one of claims 1 to 7, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be the starting position of the second frequency domain resource, and the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, the starting position of the third frequency domain resource is determined to be the starting position of the first frequency domain resource, and the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource. Determine the size of the overlap between the first frequency domain resource and the second frequency domain resource; The size of the third frequency domain resource is determined to be a first value, which is less than the size of the overlapping portion.

12. The method according to any one of claims 1 to 7, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be the starting position of the first frequency domain resource or the starting position of the second frequency domain resource plus a third offset value; Determine the size of the overlap between the first frequency domain resource and the second frequency domain resource; The size of the third frequency domain resource is determined to be a first value, which is less than the size of the overlapping portion.

13. The method according to any one of claims 9, 11, and 12, characterized in that, The first value satisfies at least one of the following: The first value is a value predefined by the protocol; The first value is the value indicated by the network device; The first value is an even number of frequency domain resource units; The first value is a multiple of 3 frequency domain resource units; The first value is a multiple of 4 frequency domain resource units; The first value is a multiple of 5 frequency domain resource units; The first value is a multiple of 6 frequency domain resource units; the first value is the nearest neighbor value that is less than the minimum value of the first frequency domain resource and the second frequency domain resource. The first value is the nearest neighbor value that is smaller than the size of the overlap between the first frequency domain resource and the second frequency domain resource; The first value is related to the time-domain resource corresponding to the third frequency-domain resource.

14. A communication method, characterized in that, The method is executed by a terminal device, and the method includes: At different times, receive or detect downlink control information (DCI) on the first frequency domain resources. Among them, the DCI on the first frequency domain resource is the same at different times, and the overlapping part of the first frequency domain resource and the second frequency domain resource is different at different times. The first frequency domain resource is the frequency domain resource corresponding to the first channel, and the second frequency domain resource is the bandwidth part allocated to the terminal device. The size of the first frequency domain resource is greater than the size of the second frequency domain resource.

15. The method according to claim 14, characterized in that, The receiving or detection of downlink control information (DCI) on the first frequency domain resources at different times includes: At a first opportune moment, DCI on the first frequency domain resource is received or detected, wherein the first frequency domain resource corresponding to the first opportune moment is aligned with the second frequency domain resource in the high-frequency direction; At a second timing, DCI on the first frequency domain resource is received or detected, wherein the first frequency domain resource corresponding to the second timing is aligned with the second frequency domain resource in the low-frequency direction.

16. The method according to claim 15, characterized in that, The overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the first timing, and the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the second timing, together constitute the complete first frequency domain resource.

17. The method according to any one of claims 14 to 16, characterized in that, The method further includes: Determine the first offset value, or receive the first offset value from the network device; Wherein, the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

18. The method according to any one of claims 14 to 17, characterized in that, The method further includes at least one of the following: The network device receives at least one of a first configuration parameter and a second configuration parameter, wherein the first configuration parameter is used to configure the first frequency domain resource and the second configuration parameter is used to configure the second frequency domain resource. Based on the first configuration parameters, the first frequency domain resource is determined; The second frequency domain resource is determined based on at least one of the second configuration parameter, the capability of the terminal device, and the type of the terminal device.

19. The method according to claim 18, characterized in that, The first configuration parameter includes at least one of the following: The size of the first frequency domain resource; The reference point of the first frequency domain resource includes any one of the following: the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource. The second offset value represents the offset between the starting position of the first frequency domain resource and the reference point of the first frequency domain resource; The second configuration parameter includes at least one of the following: The size of the second frequency domain resource; The reference point of the second frequency domain resource includes any one of the following: the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource. The third offset value represents the offset between the starting position of the second frequency domain resource and the reference point of the second frequency domain resource.

20. The method according to any one of claims 14 to 19, characterized in that, The terminal device is an IoT terminal device.

21. A communication method, characterized in that, The method is performed by a network device, and the method includes: Based on the first and second frequency domain resources, the third frequency domain resources are determined. Wherein, the first frequency domain resource is the frequency domain resource corresponding to the first channel, the second frequency domain resource is the bandwidth portion allocated to the terminal device, and the third frequency domain resource is used by the network device to send downlink control information (DCI). The size of the first frequency domain resource is greater than the size of the second frequency domain resource, and the size of the third frequency domain resource is less than or equal to the size of the second frequency domain resource.

22. The method according to claim 21, characterized in that, The method further includes: Determine a first offset value, and / or send the first offset value to the terminal device; Wherein, the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

23. The method according to claim 21 or 22, characterized in that, The size of the third frequency domain resource is less than or equal to the size of the overlapping portion between the second frequency domain resource and the first frequency domain resource.

24. The method according to any one of claims 21 to 23, characterized in that, The method further includes: The DCI is transmitted on the third frequency domain resource, wherein the terminal device is an Internet of Things (IoT) terminal device.

25. The method according to any one of claims 21 to 23, characterized in that, The method further includes: The DCI is transmitted on the third frequency domain resource or on the first frequency domain resource, wherein the terminal device is a traditional legacy terminal device.

26. The method according to any one of claims 21 to 25, characterized in that, The method further includes at least one of the following: Send at least one of a first configuration parameter and a second configuration parameter to the terminal device, wherein the first configuration parameter is used to configure the first frequency domain resource, the second configuration parameter is used to configure the second frequency domain resource, and the second configuration parameter is related to at least one of the capabilities of the terminal device and the type of the terminal device.

27. The method according to claim 26, characterized in that, The first configuration parameter includes at least one of the following: The size of the first frequency domain resource; The reference point of the first frequency domain resource includes any one of the following: the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource. The second offset value represents the offset between the starting position of the first frequency domain resource and the reference point of the first frequency domain resource; The second configuration parameter includes at least one of the following: The size of the second frequency domain resource; The reference point of the second frequency domain resource includes any one of the following: the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource. The third offset value represents the offset between the starting position of the second frequency domain resource and the reference point of the second frequency domain resource.

28. The method according to any one of claims 21 to 27, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be either the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource. The size of the third frequency domain resource is determined to be the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource.

29. The method according to any one of claims 21 to 27, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be either the starting position of the first frequency domain resource or the starting position of the second frequency domain resource, wherein the starting position of the first frequency domain resource is the same as the starting position of the second frequency domain resource. Determine the minimum value between the size of the first frequency domain resource and the size of the second frequency domain resource; The size of the third frequency domain resource is determined to be a first value, which is less than the minimum value.

30. The method according to any one of claims 21 to 27, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be the starting position of the second frequency domain resource, and the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, the starting position of the third frequency domain resource is determined to be the starting position of the first frequency domain resource, and the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource. The size of the third frequency domain resource is determined to be the size of the overlapping portion of the first frequency domain resource and the second frequency domain resource.

31. The method according to any one of claims 21 to 27, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be the starting position of the second frequency domain resource, and the starting position of the first frequency domain resource is earlier than the starting position of the second frequency domain resource; or, the starting position of the third frequency domain resource is determined to be the starting position of the first frequency domain resource, and the starting position of the second frequency domain resource is earlier than the starting position of the first frequency domain resource. Determine the size of the overlap between the first frequency domain resource and the second frequency domain resource; The size of the third frequency domain resource is determined to be a first value, which is less than the size of the overlapping portion.

32. The method according to any one of claims 21 to 27, characterized in that, The determination of the third frequency domain resource based on the first and second frequency domain resources includes: The starting position of the third frequency domain resource is determined to be the starting position of the first frequency domain resource or the starting position of the second frequency domain resource plus a third offset value; Determine the size of the overlap between the first frequency domain resource and the second frequency domain resource; The size of the third frequency domain resource is determined to be a first value, which is less than the size of the overlapping portion.

33. The method according to any one of claims 29, 31, and 32, characterized in that, The first value satisfies at least one of the following: The first value is a value predefined by the protocol; The first value is the value indicated by the network device; The first value is an even number of frequency domain resource units; The first value is a multiple of 3 frequency domain resource units; The first value is a multiple of 4 frequency domain resource units; The first value is a multiple of 5 frequency domain resource units; The first value is a multiple of 6 frequency domain resource units; The first value is the nearest neighbor value that is less than the minimum value of the first frequency domain resource and the second frequency domain resource; The first value is the nearest neighbor value that is smaller than the size of the overlap between the first frequency domain resource and the second frequency domain resource; The first value is related to the time-domain resource corresponding to the third frequency-domain resource.

34. A communication method, characterized in that, The method is performed by a network device, and the method includes: At different times, downlink control information (DCI) is transmitted on the first frequency domain resources. Among them, the DCI on the first frequency domain resource is the same for different times, and the overlapping part of the first frequency domain resource and the second frequency domain resource is different for different times. The first frequency domain resource is the frequency domain resource corresponding to the first channel, and the second frequency domain resource is the bandwidth part allocated to the terminal device. The size of the first frequency domain resource is greater than the size of the second frequency domain resource.

35. The method according to claim 34, characterized in that, The transmission of downlink control information (DCI) on the first frequency domain resources at different times includes: At a first opportune moment, DCI is transmitted on the first frequency domain resource, wherein the first frequency domain resource corresponding to the first opportune moment is aligned with the second frequency domain resource in the high-frequency direction; At a second opportune moment, DCI is transmitted on the first frequency domain resource, wherein the first frequency domain resource corresponding to the second opportune moment is aligned with the second frequency domain resource from the low-frequency direction.

36. The method according to claim 35, characterized in that, The overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the first timing, and the overlapping portion of the first frequency domain resource and the second frequency domain resource corresponding to the second timing, together constitute the complete first frequency domain resource.

37. The method according to any one of claims 34 to 36, characterized in that, The method further includes: Determine a first offset value, and / or send the first offset value to the terminal device; Wherein, the first offset value represents the offset between the starting position of the first frequency domain resource and the starting position of the second frequency domain resource.

38. The method according to any one of claims 34 to 37, characterized in that, The method further includes at least one of the following: Send at least one of a first configuration parameter and a second configuration parameter to the terminal device, wherein the first configuration parameter is used to configure the first frequency domain resource, the second configuration parameter is used to configure the second frequency domain resource, and the second configuration parameter is related to at least one of the capabilities of the terminal device and the type of the terminal device.

39. The method according to claim 38, characterized in that, The first configuration parameter includes at least one of the following: The size of the first frequency domain resource; The reference point of the first frequency domain resource includes any one of the following: the start position of the first frequency domain resource, the end position of the first frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the first frequency domain resource. The second offset value represents the offset between the starting position of the first frequency domain resource and the reference point of the first frequency domain resource; The second configuration parameter includes at least one of the following: The size of the second frequency domain resource; The reference point of the second frequency domain resource includes any one of the following: the start position of the second frequency domain resource, the end position of the second frequency domain resource, the transmission position of the synchronization signal and the PBCH block SSB, and the absolute resource position reference point PointA corresponding to the second frequency domain resource. The third offset value represents the offset between the starting position of the second frequency domain resource and the reference point of the second frequency domain resource.

40. A communication device, characterized in that, The communication device is used to perform the method according to any one of claims 1-13, 14-20, 21-33, or 34-39.

41. A communication system, characterized in that, include: A terminal device and a network device, wherein the terminal device is configured to implement the method of any one of claims 1-13 or 14-20, and the network device is configured to implement the method of any one of claims 21-33 or 34-39.

42. A storage medium storing instructions, characterized in that, When the instructions are executed on the communication device, the communication device performs the method as described in any one of claims 1-13, 14-20, 21-33, or 34-39.

43. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by the communication device, it implements the steps of the method according to any one of claims 1-13, 14-20, 21-33, or 34-39.

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