Method, apparatus, base station, and user equipment for transmitting MTC downlink control information

Abstract

The present disclosure provides a method, an apparatus, a base station, and a user equipment for transmitting MTC downlink control information. The method includes: determining a downlink control information transmission area configured for an MTC device, generating control resource configuration information, and sending the control resource configuration information to the MTC device; determining the information detection capability of the MTC device in the downlink control information transmission area, where the information detection capability indicates whether the MTC device supports searching for downlink control information from a target resource area; mapping target physical resources in the downlink control information transmission area according to the information detection capability and a preset resource mapping method, where the target physical resources are used to carry the downlink control information of the MTC device; and transmitting the downlink control information to the MTC device through the target physical resources mapped in the downlink control information transmission area. By using the method for transmitting MTC downlink control information provided by the present disclosure, transmission resources can be effectively utilized.

Description

[0001] Division Application Description

[0002] This application is a divisional application of a Chinese patent invention application with the application number 201880001025.X, the application date of June 12, 2018, and the invention creation name of "Method, Apparatus, Base Station and User Equipment for Transmitting MTC Downlink Control Information". Technical Field

[0003] The present disclosure relates to the field of communication technologies, and in particular, to a method, apparatus, base station, and user equipment for transmitting MTC downlink control information. Background Art

[0004] MTC (Machine Type Communication) refers to communication between machines without human intervention, and is widely used in smart cities, such as meter reading; smart agriculture, such as the collection of information such as temperature and humidity; smart transportation, such as shared bicycles, and many other fields. The traditional MTC physical downlink control channel PDCCH is deployed in the 4G LTE (Long Term Evolution) spectrum and shares frequency resources and some channels with LTE users.

[0005] The specific deployment method is as follows: Considering the narrowband transmission characteristics of MTC services, in the LTE system, the physical downlink control channel resources of the MTC system are not mapped to the areas corresponding to the first 3 OFDM symbols in the control channel area and the physical resource positions occupied by the CRS (cell reference signal), but are deployed in the PDSCH (Physical Downlink Shared Channel) resources for carrying data transmission to carry the physical downlink control channel resources of the MTC system, which are used to carry the DCI (Downlink Control Information) of the MTC system.

[0006] With the development of communication technologies, the mobile communication network is gradually evolving towards a 5G NR (New Radio) network, and the LTE system will gradually withdraw from the mobile cellular network. At that time, the spectrum resources of the LTE system will be reclaimed for 5G NR spectrum resources. Since the MTC system has a long lifespan, which can be up to more than ten years, after the LTE system withdraws from the mobile cellular network, the MTC system may still exist. Therefore, it is necessary to independently deploy the transmission resources of the MTC system. If the physical downlink control channel resources of the MTC system are still deployed according to the related technologies, it will cause the control channel resources of the original LTE system to be idle, resulting in resource waste. Summary of the Invention

[0007] To overcome the problems existing in the related art, embodiments of the present disclosure provide a method, an apparatus, a base station, and a user equipment for transmitting MTC downlink control information, which can effectively utilize transmission resources and enhance the transmission efficiency of the MTC system's downlink control information.

[0008] According to a first aspect of the embodiments of the present disclosure, there is provided a method for transmitting MTC downlink control information, which is applied to a base station. The method includes:

[0009] Determine a downlink control information transmission area configured for machine type communication (MTC) devices, generate control resource configuration information, and send it to the MTC devices;

[0010] Determine the information detection capabilities of MTC devices within the downlink control information transmission area, where the information detection capabilities indicate whether the MTC devices support searching for downlink control information from a target resource area, and the target resource area is the control area of the original LTE system;

[0011] Map target physical resources in the downlink control information transmission area according to the information detection capabilities and a preset resource mapping method, where the target physical resources are used to carry the downlink control information of the MTC devices;

[0012] Transmit downlink control information to the MTC devices through the target physical resources mapped in the downlink control information transmission area.

[0013] Optionally, the control area includes: the time-frequency area corresponding to the first 3 OFDM symbols of a subframe.

[0014] Optionally, the preset resource mapping method includes:

[0015] A first mapping method, configured to map the target physical resources in the data area of the original LTE system; and / or,

[0016] A second mapping method, configured to map the target physical resources in the valid area of a subframe, where the valid area of the subframe is the time-frequency area after removing the cell reference signal resources in the subframe.

[0017] Optionally, the data area includes: the time-frequency area corresponding to the last 11 OFDM symbols of a subframe.

[0018] Optionally, the determining the information detection capabilities of MTC devices within the downlink control information transmission area includes:

[0019] Obtain the device capability information reported by each MTC device;

[0020] Determine the information detection capabilities of the MTC devices according to the device capability information.

[0021] Optionally, the device capability information includes: a preset indication value for indicating the information detection capability;

[0022] Determining the information detection capability of the MTC device according to the device capability information includes:

[0023] If the preset indication value is a first indication value, it is determined that the MTC device supports searching for downlink control information from the target resource area;

[0024] If the preset indication value is a second indication value, it is determined that the MTC device does not support searching for downlink control information from the target resource area.

[0025] Optionally, mapping the target physical resource in the downlink control information transmission area according to the information detection capability and a preset resource mapping method includes:

[0026] If the MTC device does not support searching for downlink control information from the target resource area, map the target physical resource in the downlink control information transmission area according to the first mapping method.

[0027] Optionally, mapping the target physical resource in the downlink control information transmission area according to the information detection capability and a preset resource mapping method includes:

[0028] Determine the target resource mapping method of the target physical resource and perform resource mapping, where the target resource mapping method is the first mapping method or the second mapping method;

[0029] Generate physical resource configuration information according to the target resource mapping method, where the physical resource configuration information is used to inform the MTC device of the mapping range of the target physical resource;

[0030] Send the physical resource configuration information to the MTC device through high-layer signaling.

[0031] Optionally, mapping the target physical resource in the downlink control information transmission area according to the information detection capability and a preset resource mapping method includes:

[0032] If the MTC device supports searching for downlink control information from the target resource area, map the target physical resource in the downlink control information transmission area according to the control channel element (CCE) aggregation degree.

[0033] Optionally, mapping the target physical resource in the downlink control information transmission area according to the CCE aggregation degree includes:

[0034] Determine the CCE aggregation degree of the downlink control information transmission area;

[0035] If the CCE aggregation degree is less than the maximum CCE value supported by the downlink control information transmission area, map the target physical resource in the downlink control information transmission area according to the first mapping method;

[0036] If the CCE aggregation degree is equal to the maximum CCE value supported by the downlink control information transmission area, map the target physical resource in the downlink control information transmission area according to the second mapping method.

[0037] Optionally, the downlink control information transmission area includes: mapping areas of different sizes;

[0038] The mapping of the target physical resource in the downlink control information transmission area according to the CCE aggregation degree includes:

[0039] Determine the CCE aggregation degree of the current mapping area;

[0040] If the CCE aggregation degree of the current mapping area is less than the maximum CCE value supported by the current mapping area, map the target physical resource in the current mapping area according to the first mapping method;

[0041] If the CCE aggregation degree of the current mapping area is equal to the maximum CCE value supported by the current mapping area, map the target physical resource in the current mapping area according to the second mapping method.

[0042] According to the second aspect of the embodiments of the present disclosure, a method for transmitting MTC downlink control information is provided, which is applied to a machine type communication MTC device. The MTC device supports searching for downlink control information DCI from a target resource area, and the target resource area is the control area of the original LTE system. The method includes:

[0043] Obtain the control resource configuration information sent by the base station and determine the DCI transmission area;

[0044] Determine a target search area according to preset reference information and the DCI transmission area, where the preset reference information includes: the blind detection control channel element CCE aggregation degree, or the physical resource configuration information sent by the base station;

[0045] Detect the target downlink control information from the target search area according to the preset blind detection CCE aggregation degree.

[0046] Optionally, if the preset reference information includes: the blind detection control channel element CCE aggregation degree, the determination of the target search area according to the preset reference information and the DCI transmission area includes:

[0047] Determine the blind detection CCE aggregation degree of the area to be detected, where the area to be detected includes: the DCI transmission area, or, a mapping area of the DCI transmission area;

[0048] If the blind detection CCE aggregation degree is equal to the maximum value of CCE supported by the area to be detected, determine the effective area of the entire area to be detected as the target search area, where the effective area is the area of the entire area to be detected excluding the cell reference signal CRS resources;

[0049] If the blind detection CCE aggregation degree is less than the maximum value of CCE supported by the area to be detected, determine the part of the area to be detected excluding the target resource area as the target search area.

[0050] Optionally, if the preset reference information includes: the physical resource configuration information sent by the base station, determining the target search area according to the preset reference information and the DCI transmission area includes:

[0051] Determine the preset resource mapping method of the area to be detected according to the physical resource configuration information, where the area to be detected includes: the DCI transmission area, or, a mapping area of the DCI transmission area;

[0052] If the preset resource mapping method is the first mapping method, determine the part of the area to be detected excluding the target resource area as the target search area;

[0053] If the preset resource mapping method is the second mapping method, determine the effective area of the entire area to be detected as the target search area, where the effective area is the area of the area to be detected excluding the cell reference signal CRS resources;

[0054] Wherein, the first mapping method is configured to map the target physical resource in the data area of the original LTE system, and the target physical resource is used to carry the downlink control information of the MTC device;

[0055] The second mapping method is configured to map the target physical resource in the effective area of a subframe, where the effective area of the subframe is the time-frequency area after removing the cell reference signal resources from the subframe.

[0056] Optionally, the method further includes:

[0057] Report device capability information to the base station, where the device capability information is used to indicate whether the MTC device has the ability to search for downlink control information from the target resource area, so that the base station maps the target physical resource for carrying the MTC downlink control information in the preset downlink control information transmission area according to the device capability information.

[0058] According to a third aspect of the embodiments of the present disclosure, a device for transmitting MTC downlink control information is provided, which is disposed in a base station. The device includes:

[0059] A transmission area determination module, configured to determine a downlink control information transmission area configured for a machine type communication (MTC) device, generate control resource configuration information, and send it to the MTC device;

[0060] An ability determination module, configured to determine the information detection ability of MTC devices within the downlink control information transmission area, where the information detection ability indicates whether the MTC device supports searching for downlink control information from a target resource area, and the target resource area is the control area of the original LTE system;

[0061] A resource mapping module, configured to map target physical resources in the downlink control information transmission area according to the information detection ability and a preset resource mapping method, where the target physical resources are used to carry the downlink control information of the MTC device;

[0062] An information transmission module, configured to transmit downlink control information to the MTC device through the target physical resources mapped in the downlink control information transmission area.

[0063] Optionally, the control area includes: the time-frequency area corresponding to the first 3 OFDM symbols of a subframe.

[0064] Optionally, the preset resource mapping method includes:

[0065] A first mapping method, configured to map the target physical resources in the data area of the original LTE system; and / or,

[0066] A second mapping method, configured to map the target physical resources in the valid area of a subframe, where the valid area of the subframe is the time-frequency area obtained by removing the cell reference signal resources from the subframe.

[0067] Optionally, the data area includes: the time-frequency area corresponding to the last 11 OFDM symbols of a subframe.

[0068] Optionally, the ability determination module includes:

[0069] An ability information acquisition sub-module, configured to acquire the device ability information reported by each MTC device;

[0070] An ability determination sub-module, configured to determine the information detection ability of the MTC device according to the device ability information.

[0071] Optionally, the device capability information includes: a preset indication value for indicating the information detection capability;

[0072] The capability determination sub-module includes:

[0073] The first capability determination unit is configured to determine that the MTC device supports searching for downlink control information from the target resource area when the preset indication value is the first indication value;

[0074] The second capability determination unit is configured to determine that the MTC device does not support searching for downlink control information from the target resource area when the preset indication value is the second indication value.

[0075] Optionally, the resource mapping module is configured to map the target physical resource in the downlink control information transmission area according to the first mapping method when the MTC device does not support searching for downlink control information from the target resource area.

[0076] Optionally, the resource mapping module includes:

[0077] The mapping method determination sub-module is configured to determine the target resource mapping method of the target physical resource and perform resource mapping, where the target resource mapping method is the first mapping method or the second mapping method;

[0078] The configuration information generation sub-module is configured to generate physical resource configuration information according to the target resource mapping method, where the physical resource configuration information is used to inform the MTC device of the mapping range of the target physical resource;

[0079] The configuration information distribution sub-module is configured to distribute the physical resource configuration information to the MTC device through high-layer signaling.

[0080] Optionally, the resource mapping module is configured to map the target physical resource in the downlink control information transmission area according to the control channel element (CCE) aggregation degree when the MTC device supports searching for downlink control information from the target resource area.

[0081] Optionally, the resource mapping module includes:

[0082] The first CCE aggregation degree determination sub-module is configured to determine the CCE aggregation degree of the downlink control information transmission area;

[0083] The first resource mapping sub-module is configured to map the target physical resource in the downlink control information transmission area according to the first mapping method when the CCE aggregation degree is less than the maximum CCE value supported by the downlink control information transmission area;

[0084] A second resource mapping sub-module, configured to map the target physical resource in the downlink control information transmission area according to the second mapping manner when the CCE aggregation degree is equal to the maximum value of the CCEs supported by the downlink control information transmission area.

[0085] Optionally, the downlink control information transmission area includes: mapping areas of different sizes;

[0086] The resource mapping module includes:

[0087] A second CCE aggregation degree determination sub-module, configured to determine the CCE aggregation degree of the current mapping area;

[0088] A third resource mapping sub-module, configured to map the target physical resource in the current mapping area according to the first mapping manner when the CCE aggregation degree of the current mapping area is less than the maximum value of the CCEs supported by the current mapping area;

[0089] A fourth resource mapping sub-module, configured to map the target physical resource in the current mapping area according to the second mapping manner when the CCE aggregation degree of the current mapping area is equal to the maximum value of the CCEs supported by the current mapping area.

[0090] According to a fourth aspect of the embodiments of the present disclosure, there is provided a device for transmitting MTC downlink control information, which is disposed in a machine type communication (MTC) device. The MTC device supports searching for downlink control information (DCI) from a target resource area, and the target resource area is a control area of an original LTE system. The device includes:

[0091] A transmission area determination module, configured to obtain control resource configuration information sent by a base station and determine a DCI transmission area;

[0092] A search area determination module, configured to determine a target search area according to preset reference information and the DCI transmission area, where the preset reference information includes: a blind detection control channel element (CCE) aggregation degree, or physical resource configuration information sent by the base station;

[0093] A DCI detection module, configured to detect target downlink control information from the target search area according to a preset blind detection CCE aggregation degree.

[0094] Optionally, if the preset reference information includes: a blind detection control channel element (CCE) aggregation degree, the search area determination module includes:

[0095] The CCE aggregation degree determination sub-module is configured to determine the blind detection CCE aggregation degree of the area to be detected, where the area to be detected includes: the DCI transmission area, or, a mapped area of the DCI transmission area;

[0096] The first search area determination sub-module is configured to, when the blind detection CCE aggregation degree is equal to the maximum value of CCEs supported by the area to be detected, determine the valid area of the entire area to be detected as the target search area, where the valid area is the area of the entire area to be detected excluding the cell reference signal CRS resources;

[0097] The second search area determination sub-module is configured to, when the blind detection CCE aggregation degree is less than the maximum value of CCEs supported by the area to be detected, determine the part of the area to be detected excluding the target resource area as the target search area.

[0098] Optionally, if the preset reference information includes: the physical resource configuration information sent by the base station, the search area determination module includes:

[0099] The resource mapping mode determination sub-module is configured to determine the preset resource mapping mode of the area to be detected according to the physical resource configuration information, where the area to be detected includes: the DCI transmission area, or, a mapped area of the DCI transmission area;

[0100] The third search area determination sub-module is configured to, when the preset resource mapping mode is the first mapping mode, determine the part of the area to be detected excluding the target resource area as the target search area;

[0101] The fourth search area determination sub-module is configured to, when the preset resource mapping mode is the second mapping mode, determine the valid area of the entire area to be detected as the target search area, where the valid area is the area of the area to be detected excluding the cell reference signal CRS resources;

[0102] Wherein, the first mapping mode is configured to map the target physical resource in the data area of the original LTE system, and the target physical resource is used to carry the downlink control information of the MTC device;

[0103] The second mapping mode is configured to map the target physical resource in the valid area of a subframe, where the valid area of the subframe is the time-frequency area obtained by removing the cell reference signal resources from the subframe.

[0104] Optionally, the device further includes:

[0105] The device capability reporting module is configured to report device capability information to the base station, where the device capability information is used to indicate whether the MTC device has the ability to search for downlink control information from the target resource area, so that the base station maps the target physical resources for carrying MTC downlink control information in a preset downlink control information transmission area according to the device capability information.

[0106] According to a fifth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, on which computer instructions are stored, and when the instructions are executed by a processor, the steps of any of the methods described in the first aspect above are implemented.

[0107] According to a sixth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, on which computer instructions are stored, and when the instructions are executed by a processor, the steps of any of the methods described in the second aspect above are implemented.

[0108] According to a seventh aspect of the embodiments of the present disclosure, there is provided a base station, including:

[0109] A processor;

[0110] A memory for storing processor-executable instructions;

[0111] Wherein, the processor is configured to:

[0112] Determine the downlink control information transmission area configured for machine type communication (MTC) devices, generate control resource configuration information and send it to the MTC devices;

[0113] Determine the information detection capability of MTC devices in the downlink control information transmission area, where the information detection capability indicates whether the MTC device supports searching for downlink control information from the target resource area, and the target resource area is the control area of the original LTE system;

[0114] Map target physical resources in the downlink control information transmission area according to the information detection capability and a preset resource mapping method, where the target physical resources are used to carry the downlink control information of the MTC devices;

[0115] Transmit downlink control information to the MTC devices through the target physical resources mapped in the downlink control information transmission area.

[0116] According to an eighth aspect of the embodiments of the present disclosure, there is provided a user equipment, including:

[0117] A processor;

[0118] A memory for storing processor-executable instructions;

[0119] Wherein, the processor is configured to:

[0120] Obtain the control resource configuration information sent by the base station, and determine the DCI transmission area;

[0121] Determine the target search area according to the preset reference information and the DCI transmission area, where the preset reference information includes: the blind detection control channel element CCE aggregation degree, or the physical resource configuration information sent by the base station;

[0122] Detect the target downlink control information from the target search area according to the preset blind detection CCE aggregation degree.

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

[0124] When adopting the method for transmitting MTC downlink control information provided by the present disclosure, when the base station independently deploys physical downlink control channel resources for MTC devices, if the MTC device supports searching for its own downlink control information from the target resource area, that is, the control area of the original LTE system, the base station can map the target physical resources, namely MPDCCH resources, used to carry the downlink control information of the MTC device within the above target resource area, enhance the MPDCCH resource mapping, effectively utilize system resources, and improve the transmission efficiency of the downlink control information of the MTC device.

[0125] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0126] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0127] Figure 1 Schematic diagram of resource mapping of 2 PRB pairs shown according to an exemplary embodiment of the present disclosure.

[0128] Figure 2 It is a flowchart of a method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0129] Figure 3 It is a flowchart of another method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0130] Figures 4-1 to 4-3 It is a schematic diagram of an application scenario for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0131] Figure 5It is a flowchart of another method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0132] Figure 6 It is a flowchart of another method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0133] Figure 7 It is a flowchart of another method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0134] Figures 8-1 to 8-4 It is a schematic diagram of a scenario for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0135] Figure 9 It is a flowchart of a method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0136] Figure 10 It is a flowchart of another method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0137] Figure 11 It is a flowchart of another method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0138] Figure 12 It is a flowchart of another method for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0139] Figure 13 It is a block diagram of a device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0140] Figure 14 It is a block diagram of another device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0141] Figure 15 It is a block diagram of another device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0142] Figure 16 It is a block diagram of another device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0143] Figure 17 It is a block diagram of another device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0144] Figure 18Another block diagram of a device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0145] Figure 19 A block diagram of a device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0146] Figure 20 Another block diagram of a device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0147] Figure 21 Another block diagram of a device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0148] Figure 22 Another block diagram of a device for transmitting MTC downlink control information shown according to an exemplary embodiment of the present disclosure.

[0149] Figure 23 A schematic structural diagram of a base station shown according to an exemplary embodiment of the present disclosure.

[0150] Figure 24 A schematic structural diagram of a user equipment shown according to an exemplary embodiment of the present disclosure. Detailed implementation manners

[0151] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0152] The execution entities involved in the present disclosure include: base stations and user equipment (UE) in a 5G network. Among them, the base station may be a base station provided with a large-scale antenna array, a sub-base station, etc. The user equipment UE may be a user terminal, a user node, a mobile terminal, or an MTC device such as a tablet computer. In the specific implementation process, the base station and the user equipment are independent of each other and at the same time are interconnected to jointly implement the technical solutions provided by the present disclosure.

[0153] The application scenario of the present disclosure is as follows: The MTC system is independently deployed without relying on the original 4G LTE system. For example, the spectrum resources of the original 4G LTE system are reclaimed for the spectrum resources of the 5G NR system. In the original LTE system, MTC devices need to share spectrum resources and channels with LTE users. Among them, due to the narrowband transmission characteristics of MTC services, the LTE system will not deploy PDCCH resources, i.e., MPDCCH resources, for MTC devices in the control region (Control Region), which is the time-frequency region corresponding to the first 3 OFDM symbols of a subframe; instead, MPDCCH resources are deployed for MTC devices in the data region (Data Region), which is the time-frequency region corresponding to the last 11 OFDM symbols of a subframe. After the LTE system exits the mobile cellular network, the control region of the original LTE, i.e., the time-frequency region corresponding to the first 3 OFDM symbols, will be vacated and become blank resources. See Figure 1 The resource mapping schematic diagram of 2 PRBs shown in

[0154] Based on this, the present disclosure provides a method for transmitting MTC downlink control information. When the base station independently deploys MPDCCH resources for MTC devices, the resources of the original LTE control region can be used to transmit the DCI (Downlink Control Information) of MTC devices, improving the transmission efficiency of the MTC downlink control information DCI.

[0155] See Figure 2 A flowchart of a method for transmitting MTC downlink control information shown according to an exemplary embodiment, which is applied to a base station. The method may include the following steps:

[0156] In step 11, determine the downlink control information transmission region configured for the machine type communication MTC device, generate control resource configuration information, and send it to the MTC device;

[0157] In the 5G NR system, considering the narrowband transmission characteristics of MTC devices, the base station can determine the time-frequency resources corresponding to 2 PRB pairs, 4 PRB pairs, and 6 PRB pairs as the DCI transmission area for MTC devices. Among them, the time-frequency range of one PRB (physical resource block) is: in the time domain, it is one time slot, that is, 0.5 ms. Among them, one slot is equal to 7 OFDM symbols; in the frequency domain, it includes 12 consecutive subcarriers. If the frequency interval of one subcarrier is 15 KHz, the frequency range of one PRB is 180 KHz. One PRB pair occupies 2 slots in the time domain, that is, 1 ms; in the frequency domain, it includes 12 subcarriers.

[0158] In the present disclosure, the base station configures a DCI transmission area of a preset size for the MTC device according to the downlink channel conditions, such as 2 PRB pairs. This DCI transmission area can be configured to carry the DCI of one MTC device, or can be configured to carry the DCI of multiple MTC devices.

[0159] After the base station configures the above DCI transmission area of the MTC device, it generates control resource configuration information and sends it to the MTC device to inform the MTC device from what time-frequency area to detect its own DCI.

[0160] In step 12, determine the information detection capability of MTC devices within the downlink control information transmission area;

[0161] Among them, the information detection capability of one MTC device is used to indicate whether the MTC device supports searching for DCI from the target resource area. The above target resource area refers to the control area of the original LTE system, generally referring to the time-frequency area corresponding to the first 3 OFDM symbols in one subframe, as Figure 1 shown.

[0162] The present disclosure relates to two types of MTC devices. Among them, one type of MTC device does not support searching for DCI from the target resource area. In the present disclosure, it can be called the first MTC device. This first MTC device can be an MTC device that follows the transmission protocol of the original LTE system, such as existing Rel.13-Rel.15 users. Another type of MTC device can support searching for DCI from the target resource area. In the present disclosure, it can be called the second MTC device.

[0163] In the present disclosure, when the base station determines which MTC devices to configure the above preset DCI transmission area, it can include two situations:

[0164] In the first case, the base station configures the above-mentioned preset DCI transmission area for the MTC device through a random scheduling method. Still taking the above 2 PRB pairs as an example, assume that the corresponding MTC devices include: UE1, UE2, and UE3, and the base station does not pre-determine which type of MTC device each of the above MTC devices belongs to.

[0165] In the second case, the base station configures the above-mentioned preset DCI transmission area for the same type of MTC device through a targeted scheduling method. For example, the UEs scheduled within the above 2 PRB pairs all belong to the second type of MTC device.

[0166] For the first case above, before the base station maps the MPDCCH resources for the MTC device within the DCI transmission area, it can first monitor the information detection capabilities of each MTC device, so as to determine how to map the MPDCCH resources subsequently.

[0167] In one embodiment, the base station can determine the information detection capabilities of the above MTC devices according to the obtained operator-related information and the device information of each of the above MTC devices, such as device type and other information.

[0168] In another embodiment, the base station can also determine the information detection capabilities of each MTC device through the device capability information reported by the UE. See Figure 3 According to another method flowchart for transmitting MTC downlink control information shown in an exemplary embodiment, the above step 12 may include:

[0169] In step 121, obtain the device capability information reported by each of the MTC devices;

[0170] In the present disclosure, the base station may request the MTC devices accessing the cell network to report the device capability information, that is, the MTC devices passively report the device capability information. Alternatively, under a preset trigger condition, such as when accessing the cell network covered by the base station, the MTC device actively reports the device capability information to the base station. The device capability information at least includes: information indicating the above information detection capability of the MTC device.

[0171] In step 122, determine the information detection capabilities of the MTC devices according to the device capability information.

[0172] In an embodiment of the present disclosure, the above device capability information may include: a preset indication value for indicating the information detection capability. Then the above step 122 is specifically: determine the information detection capabilities of the MTC devices according to the preset indication value.

[0173] In one embodiment, a first preset value may be used to indicate that the MTC device belongs to the first type of MTC device; a second preset value may be used to indicate that the MTC device belongs to the second type of MTC device.

[0174] It is assumed that the protocol stipulates that one bit in a specified field carrying the device capability information is used to carry the information indicating the information detection capability of the MTC device. The first preset value can be 0, and the second preset value can be 1.

[0175] Then the specific implementation process of step 122 is as follows: If the base station detects that in the device capability information reported by an MTC device such as UE1, the preset bit is set to 0, it is determined that UE1 does not support searching for DCI from the target resource area, that is, it is determined that UE1 belongs to the first type of MTC device. On the contrary, if the preset bit is set to 1, it is determined that UE1 supports searching for DCI from the target resource area, that is, it is determined that UE1 belongs to the second type of MTC device.

[0176] For the second case above, when the base station configures the DCI transmission area, it has already scheduled the same type of MTC devices specifically, and can directly determine the information detection capabilities of each MTC device within the DCI transmission area.

[0177] In step 13, according to the information detection capability and the preset resource mapping method, map the target physical resources in the downlink control information transmission area, where the target physical resources are used to carry the downlink control information of the MTC device;

[0178] In the present disclosure, the above-mentioned target physical resources are the MPDCCH resources used to carry the DCI information of the MTC device.

[0179] According to the different information detection capabilities of the MTC devices in the DCI transmission area, the base station can use the following two mapping methods to map the MPDCCH resources in the DCI transmission area:

[0180] The first mapping method is the same as the original LTE system, mapping the MPDCCH resources in the data area of the original LTE system, that is, mapping the MPDCCH resources in the time-frequency area corresponding to the last 11 OFDM symbols of a subframe. Exemplarily, map the MPDCCH resources in the Figure 1 blank cells shown in the left figure.

[0181] The second mapping method is to map the MPDCCH resources in the valid area of a subframe, where the above-mentioned valid area refers to the area in a subframe excluding the CRS (cell reference signal) resources. This valid area includes: the time-frequency area corresponding to the first 3 OFDM symbols of the original LTE system. As Figure 1 shown, map the MPDCCH resources in the Figure 1 blank cells shown in the right figure.

[0182] In the present disclosure, the base station may map CRS resources in the above DCI transmission area with reference to the original LTE system. Refer to Figure 1 for the deployment of CRS port2 / 3 and CRS port0 / 1.

[0183] Regarding the mapping of MPDCCH resources, i.e., the target physical resources, the implementation of step 13 above may include two cases:

[0184] Case 1: At least one MTC device in the above DCI transmission area does not support searching for DCI from the target resource area, that is, there is at least one first MTC device in the above DCI transmission area.

[0185] In this case, the base station maps MPDCCH resources in the DCI transmission area according to the first mapping method.

[0186] Exemplarily, assuming that the above DCI transmission area is 2 PRB pairs, the base station maps the MPDCCH resources in the time-frequency area corresponding to the last 11 OFDM symbols of a subframe according to the first mapping method, as Figure 4-1 shown.

[0187] Case 2: All MTC devices in the above DCI transmission area support searching for DCI from the target resource area, that is, all MTC devices in the above DCI transmission area belong to the second MTC devices.

[0188] In this case, the base station may map MPDCCH resources in the DCI transmission area by using at least the following two methods:

[0189] Method 1: The base station independently determines which mapping method to use to map MPDCCH resources in the DCI transmission area

[0190] Refer to Figure 5 According to the flowchart of another method for transmitting MTC downlink control information shown in an exemplary embodiment, step 13 above may include:

[0191] In step 1301, determine the target resource mapping method of the target physical resources and perform resource mapping;

[0192] In the embodiments of the present disclosure, when the base station determines that all UEs in the DCI transmission area belong to the second MTC devices, the base station may determine to use the first mapping method or the second mapping method according to requirements such as configuration flexibility or scheduling flexibility, and map the target physical resources, i.e., MPDCCH resources, in the DCI transmission area according to the target resource mapping method.

[0193] In step 1302, physical resource configuration information is generated according to the target resource mapping manner, and the physical resource configuration information is used to inform the MTC device of the mapping range of the target physical resources;

[0194] In an embodiment of the present disclosure, after the base station maps the MPDCCH resources in the DCI transmission area according to the independently determined target resource mapping manner, the physical resource configuration information can also be generated according to the above target resource mapping manner to inform the MTC devices in the DCI transmission area of the mapping range of the above MPDCCH resources.

[0195] In one embodiment, the above physical resource configuration information may include: a target resource mapping manner, such as a first mapping manner.

[0196] In another embodiment of the present disclosure, the above physical resource configuration information may also include: the specific mapping range of the MPDCCH resources, such as the last 11 OFDM symbols.

[0197] In step 1303, the physical resource configuration information is sent to the MTC device through high-layer signaling.

[0198] In the present disclosure, the base station may send the physical resource configuration information to each MTC device in the DCI transmission area through high-layer signaling, so that each MTC device can accurately locate the target search area when blindly detecting DCI information.

[0199] Among them, the above high-layer signaling may be RRC (Radio Resource Control) signaling, MAC (Medium Access Control) CE (Control Element) signaling.

[0200] In an embodiment of the present disclosure, for the above-mentioned case 2, that is, when the base station determines that each MTC device in the DCI transmission area supports searching for DCI from the target resource area, the base station may independently determine which resource mapping manner to use for MPDCCH resource mapping according to the downlink channel conditions of the cell; and generate physical resource configuration information after resource deployment and send it to the MTC device, so that the MTC device can accurately locate the target search area according to the above physical resource configuration information when blindly detecting its own DCI, and improve the detection efficiency of DCI.

[0201] Method 2: The base station determines which preset mapping manner to use to map the MPDCCH resources in the DCI transmission area according to the CCE (Control Channel Element) aggregation degree.

[0202] In this disclosure, the basic unit for carrying the DCI of MTC devices can also be a CCE (Control Channel Element), and each CCE contains a preset number of REGs (Resource Element Groups). A pair of PRBs can support 4 CCEs, and the DCI bearing resources of an MTC device will be scattered and mapped in the entire DCI transmission area. For example, for the DCI of an MTC device such as UE1, if it is concentrated and loaded into CCEs, it may occupy two CCEs, that is, the CCE aggregation degree of the DCI configured for UE1 is 2. Although the aggregation degree of the DCI of this MTC device is 2 CCEs, in actual resource deployment, the DCI of UE1 will be scattered and deployed in the entire DCI transmission area.

[0203] Similar to the PDCCH transmission in the LTE system, the MPDCCH transmission also supports different CCE aggregation degrees to match different channel qualities. And in different coverage enhancement modes, the same DCI transmission area can support different CCE aggregation degrees. As described above, in this disclosure, the DCI transmission areas that the base station can configure for MTC devices can include: 2 pairs of PRBs, 4 pairs of PRBs, and 6 pairs of PRBs. Among them, when the DCI transmission area configured by the base station for the MTC device is 6 pairs of PRBs, in order to improve resource utilization efficiency, the above 6 pairs of PRBs need to be divided into two mapping areas, namely: a 2-pair PRB mapping area and a 4-pair PRB mapping area. Then the CCE aggregation degrees supported by different DCI transmission areas are shown in Table 1:

[0204]

[0205] Table 1

[0206] Among them, 2PRB set in Table 1 represents the 2-pair PRB mapping area included in the above 6-pair PRB area;

[0207] Similarly, 4PRB set in Table 1 represents the 4-pair PRB mapping area included in the above 6-pair PRB area.

[0208] It should be noted here that only when the DCI transmission area is 6 pairs of PRBs, the concept of a mapping area may be involved.

[0209] It can be seen that when the base station configures the CCE aggregation degree for the DCI transmission area, according to the size of the transmission area, it may configure one CCE aggregation degree for the entire DCI transmission area, or may configure different CCE aggregation degrees for different mapping areas of the DCI transmission area.

[0210] For the case where the base station configures one CCE aggregation degree for the entire DCI transmission area, seeFigure 6 Another flowchart of a method for transmitting MTC downlink control information shown according to an exemplary embodiment, step 13 above may include:

[0211] In step 1311, determine the CCE aggregation degree of the downlink control information transmission area;

[0212] In the present disclosure, after the base station determines the DCI transmission area, it may configure the CCE aggregation degree corresponding to the DCI transmission area according to the downlink channel conditions.

[0213] The configuration rule of the CCE aggregation degree is: if the downlink channel condition is good, a lower CCE aggregation degree can be configured to avoid resource waste; if the downlink channel condition is poor, a higher CCE aggregation degree can be configured to ensure the reliability of DCI transmission.

[0214] Exemplarily, still taking the DCI transmission area as 2 PRB pairs as an example, if the base station detects that the current downlink channel condition is good, the CCE aggregation degree can be configured to 2, as shown in Table 1 above. Conversely, if the base station detects that the current downlink channel condition is poor, the CCE aggregation degree can be configured to 8, that is, the maximum CCE supported by the 2 PRB pairs.

[0215] In step 1312, if the CCE aggregation degree is less than the maximum CCE supported by the downlink control information transmission area, map the target physical resources in the downlink control information transmission area according to the first mapping method;

[0216] Assume that the CCE aggregation degree configured by the base station for the DCI transmission area is represented as R c , in the present disclosure, R c can be compared with the maximum CCE supported by the DCI transmission area, so as to determine which mapping method the base station uses to map the MPDCCH resources in the above DCI transmission area.

[0217] If R c is less than the maximum CCE supported by the DCI transmission area, the first mapping method is used for MPDCCH resource mapping. Conversely, execute step 1313.

[0218] In step 1313, if the CCE aggregation degree is equal to the maximum CCE supported by the downlink control information transmission area, map the target physical resources in the downlink control information transmission area according to the second mapping method.

[0219] Similarly, if R c is equal to the maximum CCE supported by the DCI transmission area, the second mapping method is used to map the MPDCCH resources in the above DCI transmission area.

[0220] Exemplarily, still assuming that the DCI transmission area determined by the base station is 2 PRB pairs. As described above, in the present disclosure, one PRB pair can support 4 CCEs. Then, the maximum number of CCEs that the 2 PRB pairs can support is 8.

[0221] If the CCR aggregation degree R configured by the base station for the 2 PRB pairs c is less than 8, for example, R c equals 2 or 4, then the base station maps the MPDCCH resources in the 2 PRB pairs according to the first mapping method, as Figure 4-1 shown.

[0222] Conversely, if the CCR aggregation degree R configured by the base station for the 2 PRB pairs c equals 8, then the base station maps the MPDCCH resources in the 2 PRB pairs according to the second mapping method, as Figure 4-2 shown; the base station maps the MPDCCH resources within the valid area of a subframe. The valid area includes the time-frequency area corresponding to the first 3 OFDM symbols of a subframe. Exemplarily, as Figure 1 the time-frequency areas corresponding to the blank cells shown in the right figure.

[0223] Similarly, the above method is applicable to the case where the DCI transmission area is 4 PRB pairs, and the DCI transmission area is 6 PRB pairs, and R c equals 24, as Figure 4-3 shown.

[0224] For the case where the base station configures different CCE aggregation degrees for different mapping areas of the DCI transmission area, the base station can determine the mapping method of the MPDCCH resources for each mapping area.

[0225] Referring to Figure 7 Another flowchart of a method for transmitting MTC downlink control information shown in an exemplary embodiment, step 13 above may include:

[0226] In step 1321, determine the CCE aggregation degree of the current mapping area;

[0227] In step 1322, if the CCE aggregation degree of the current mapping area is less than the maximum number of CCEs that the current mapping area can support, map the target physical resources in the current mapping area according to the first mapping method;

[0228] In step 1323, if the CCE aggregation degree of the current mapping area is equal to the maximum number of CCEs that the current mapping area can support, map the target physical resources in the current mapping area according to the second mapping method.

[0229] Exemplarily, for the case where the DCI transmission area is 6 PRB pairs and these 6 PRB pairs are divided into 2 PRB pair mapping areas and 4 PRB pair mapping areas, the deployment schematic diagram of the MPDCCH resources determined by the base station according to the above method can be seen in Figures 8-1 to 8-4 .

[0230] Among them, Figure 8-1 R applicable to 2 PRB pair mapping areas c is less than 8, and R of 4 PRB pair mapping areas c is equal to 16 in the application scenario.

[0231] Similarly, Figure 8-2 R applicable to 2 PRB pair mapping areas c is equal to 8, and R of 4 PRB pair mapping areas c is less than 16 in the application scenario.

[0232] Figure 8-3 R applicable to 2 PRB pair mapping areas c is less than 8, and R of 4 PRB pair mapping areas c is less than 16 in the application scenario.

[0233] Figure 8-4 R applicable to 2 PRB pair mapping areas c is equal to 8, and R of 4 PRB pair mapping areas c is equal to 16 in the application scenario.

[0234] In the embodiments of the present disclosure, within the same DCI transmission area, different MPDCCH resource mapping methods may be adopted for different mapping areas. In this way, there is no need to notify the UE of the mapping method of the above target physical resources through high-layer signaling, and the resource configuration is more flexible, which can effectively improve the resource utilization efficiency.

[0235] In step 14, the downlink control information is transmitted to the MTC device through the target physical resources mapped by the downlink control information transmission area.

[0236] After the base station maps the target physical resources, the downlink control information can be loaded into the above target physical resources, and the downlink control information is sent to each MTC device through the MPDCCH.

[0237] In summary, when using the method for transmitting MTC downlink control information provided in this disclosure, when the base station independently deploys physical downlink control channel resources for an MTC device, if the MTC device supports searching for its own downlink control information from the target resource area, that is, the control area of the original LTE system, the base station may map target physical resources for carrying the downlink control information of the MTC device within the above target resource area, enhance the MPDCCH resource mapping, effectively utilize system resources, and improve the transmission efficiency of the downlink control information of the MTC device.

[0238] Correspondingly, this disclosure also provides a method for transmitting MTC downlink control information, which is applied to the above second MTC device, that is, an MTC device that supports searching for DCI from the target resource area. The above target resource area is the control area of the original LTE system, and may be the time-frequency area corresponding to the first 3 OFDM symbols of a subframe, such as Figure 1 shown in the right figure.

[0239] See Figure 9 According to a flowchart of a method for transmitting MTC downlink control information shown in an exemplary embodiment, the method may include the following steps:

[0240] In step 21, obtain the control resource configuration information sent by the base station, and determine the DCI transmission area;

[0241] Corresponding to the above step 11, an MTC device receives the control resource configuration information sent by the base station, so as to determine in what time-frequency range to search for the DCI configured for it by the base station.

[0242] In step 22, determine a target search area according to the preset reference information and the DCI transmission area, where the preset reference information includes: the blind detection control channel element CCE aggregation degree, or the physical resource configuration information sent by the base station. The above target search area may belong to the DCI transmission area or a mapped area of the DCI transmission area, and will be described in detail in combination with specific examples later.

[0243] In this disclosure, according to whether the MTC device receives the physical resource configuration information sent by the base station, the implementation of the above step 22 may include the following two situations:

[0244] For the first situation, if the MTC device does not receive the physical resource configuration information sent by the base station, the MTC device may determine the target search area according to the preset blind detection CCE aggregation degree

[0245] See Figure 10 According to another flowchart of a method for transmitting MTC downlink control information shown in an exemplary embodiment, the above step 22 may include:

[0246] In step 2211, determine the blind detection CCE aggregation degree of the area to be detected, where the area to be detected includes: the DCI transmission area, or a mapped area of the DCI transmission area;

[0247] When the MTC device performs blind detection, it generally does not know which CCE aggregation degree to use to search for its own DCI from the DCI transmission area. Therefore, it will search once with each available CCE aggregation degree. Still taking the DCI transmission area as 2 PRBs as an example, the preset blind detection CCE aggregation degrees of the MTC device can be 2, 4, and 8.

[0248] In step 2212, if the blind detection CCE aggregation degree is equal to the maximum CCE value that the area to be detected can support, determine the effective area of the entire area to be detected as the target search area;

[0249] Among them, the effective area is the area of the entire area to be detected excluding the CRS resources.

[0250] In the present disclosure, the above-mentioned area to be detected may be the entire DCI transmission area, or may also be a mapped area in a DCI transmission area.

[0251] Exemplarily, still assuming that the above-mentioned area to be detected is 2 PRBs, if the blind detection CCE aggregation degree value of the above-mentioned UE1 is 8, the target search area determined by UE1 is as Figure 4-2 shown.

[0252] If the above-mentioned DCI transmission area is 6 PRB pairs, including two mapped areas, namely a 2-PRB pair mapped area and a 4-PRB pair mapped area. If the area to be detected is the above-mentioned 2-PRB pair mapped area, when UE1 determines to search this mapped area with the CCE aggregation degree value of 8, the determined target search area is as Figure 8-2 shown.

[0253] In step 2213, if the blind detection CCE aggregation degree is less than the maximum CCE value that the area to be detected can support, determine the part of the area to be detected excluding the target resource area as the target search area.

[0254] Similarly, if the blind detection CCE aggregation degree value of the above-mentioned UE1 is 2 or 4, which is less than the maximum CCE value of 8 that the area to be detected, that is, 2 PRB pairs, can support, the target search area determined by UE1 is as Figure 4-1 shown.

[0255] For the case where the area to be detected is a 2-PRB pair mapped area, if the blind detection CCE aggregation degree value of the above-mentioned UE1 is 2 or 4, which is less than the maximum CCE value of 8 that the area to be detected, that is, the 2-PRB pair mapped area, can support, the target search area determined by UE1 is asFigure 8-1 as shown

[0256] In the second case, when the MTC device receives the physical resource configuration information sent by the base station, the MTC device may determine the target search area according to the physical resource configuration information. Among them, the above physical resource configuration information is used to inform the MTC device of the mapping range of the MPDCCH resources.

[0257] In an embodiment, if the physical resource configuration information includes: the mapping range of the MPDCCH resources. Then the MTC device may directly determine the mapping range of the above MPDCCH resources as the target search area.

[0258] In another embodiment, if the physical resource configuration information includes: the preset mapping method of the DCI transmission area.

[0259] See Figure 11 According to another method flowchart for transmitting MTC downlink control information shown in an exemplary embodiment, the above step 22 may include:

[0260] In step 2221, determine the preset resource mapping method of the area to be detected according to the physical resource configuration information, where the area to be detected includes: the DCI transmission area, or, a mapped area of the DCI transmission area;

[0261] In step 2222, if the preset resource mapping method is the first mapping method, determine the part of the area to be detected excluding the target resource area as the target search area, where the first mapping method is configured to map the target physical resource in the data area of the original LTE system, and the target physical resource is used to carry the downlink control information of the MTC device;

[0262] In step 2223, if the preset resource mapping method is the second mapping method, determine the valid area of the entire area to be detected as the target search area, where the valid area is the area of the entire area to be detected excluding the cell reference signal CRS resources; the second mapping method is configured to map the target physical resource in the valid area of a subframe, where the valid area of the subframe is the time-frequency area after removing the cell reference signal resources from the subframe.

[0263] In step 23, detect the target downlink control information from the target search area according to the preset blind detection CCE aggregation degree.

[0264] As shown in Table 1 above, after determining the target search area, the MTC device detects the DCI information belonging to itself, that is, the target DCI, from the above target search area according to the available blind detection CCE aggregation degree.

[0265] Corresponding to the above Figure 3 shown embodiment, refer to Figure 12 Another flowchart of a method for transmitting MTC downlink control information shown according to an exemplary embodiment. Before step 22, the method may further include:

[0266] In step 20, report device capability information to the base station, where the device capability information is used to indicate whether the MTC device has the ability to search for downlink control information from the target resource area.

[0267] Correspondingly, after obtaining the device capability information, the base station may map a target physical resource for carrying MTC downlink control information in a preset downlink control information transmission area according to the device capability information.

[0268] For the foregoing method embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present disclosure is not limited by the described action sequence, because according to the present disclosure, certain steps may be performed in other sequences or simultaneously.

[0269] Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to the present disclosure.

[0270] Corresponding to the foregoing method embodiments for implementing application functions, the present disclosure also provides embodiments of an apparatus for implementing application functions and a corresponding terminal.

[0271] Refer to Figure 13 A block diagram of an apparatus for transmitting MTC downlink control information shown according to an exemplary embodiment, which is disposed in a base station. The apparatus may include:

[0272] A transmission area determination module 31, configured to determine a downlink control information transmission area configured for a machine type communication (MTC) device, generate control resource configuration information, and send it to the MTC device;

[0273] A capability determination module 32, configured to determine the information detection capability of MTC devices in the downlink control information transmission area, where the information detection capability indicates whether the MTC device supports searching for downlink control information from a target resource area, and the target resource area is the control area of the original LTE system; wherein, in an apparatus embodiment of the present disclosure, the control area may include: a time-frequency area corresponding to the first 3 OFDM symbols of a subframe.

[0274] A resource mapping module 33, configured to map target physical resources in the downlink control information transmission area according to the information detection capability and a preset resource mapping method, where the target physical resources are used to carry the downlink control information of the MTC device;

[0275] In the present disclosure, the preset resource mapping method may include:

[0276] A first mapping method, configured to map the target physical resources in the data area of the original LTE system; and / or,

[0277] A second mapping method, configured to map the target physical resources in the valid area of a subframe, where the valid area of the subframe is a time-frequency area obtained by removing cell reference signal resources from the subframe. The data area may include: a time-frequency area corresponding to the last 11 OFDM symbols of a subframe.

[0278] An information transmission module 34, configured to transmit downlink control information to the MTC device through the target physical resources mapped in the downlink control information transmission area.

[0279] See Figure 14 Another device block diagram for transmitting MTC downlink control information shown according to an exemplary embodiment. Based on the device embodiment shown, the capability determination module 32 may include: Figure 13 Shown in the device embodiment, the capability determination module 32 may include:

[0280] A capability information acquisition sub-module 321, configured to acquire the device capability information reported by each MTC device;

[0281] A capability determination sub-module 322, configured to determine the information detection capability of the MTC device according to the device capability information.

[0282] In an apparatus embodiment of the present disclosure, the device capability information acquired by the capability information acquisition sub-module 321 may include: a preset indication value for indicating the information detection capability;

[0283] See Figure 15 Another device block diagram for transmitting MTC downlink control information shown according to an exemplary embodiment. Based on the device embodiment shown, the capability determination sub-module 322 may include: Figure 14 Shown in the device embodiment, the capability determination sub-module 322 may include:

[0284] A first capability determination unit 3221, configured to determine that the MTC device supports searching for downlink control information from the target resource area when the preset indication value is a first indication value;

[0285] The second capability determination unit 3222 is configured to determine that the MTC device does not support searching for downlink control information from the target resource area when the preset indication value is the second indication value.

[0286] In an apparatus embodiment of the present disclosure, the resource mapping module 33 may be configured to map the target physical resource in the downlink control information transmission area according to the first mapping manner when the MTC device does not support searching for downlink control information from the target resource area.

[0287] See Figure 16 According to another block diagram of an apparatus for transmitting MTC downlink control information shown in an exemplary embodiment, based on the apparatus embodiment shown in Figure 13 the resource mapping module 33 may include:

[0288] The mapping manner determination sub-module 3301 is configured to determine the target resource mapping manner of the target physical resource and perform resource mapping, where the target resource mapping manner is the first mapping manner or the second mapping manner;

[0289] The configuration information generation sub-module 3302 is configured to generate physical resource configuration information according to the target resource mapping manner, and the physical resource configuration information is used to inform the MTC device of the mapping range of the target physical resource;

[0290] The configuration information sending sub-module 3303 is configured to send the physical resource configuration information to the MTC device through high-layer signaling.

[0291] In another apparatus embodiment of the present disclosure, the resource mapping module 33 may be configured to map the target physical resource in the downlink control information transmission area according to the CCE aggregation degree of the control channel element CCE when the MTC device supports searching for downlink control information from the target resource area.

[0292] See Figure 17 According to another block diagram of an apparatus for transmitting MTC downlink control information shown in an exemplary embodiment, based on the apparatus embodiment shown in Figure 13 the resource mapping module 33 may include:

[0293] The first CCE aggregation degree determination sub-module 3311 is configured to determine the CCE aggregation degree of the downlink control information transmission area;

[0294] The first resource mapping sub-module 3312 is configured to map the target physical resource in the downlink control information transmission area according to the first mapping method when the CCE aggregation degree is less than the maximum value of CCE supported by the downlink control information transmission area.

[0295] The second resource mapping sub-module 3313 is configured to map the target physical resource in the downlink control information transmission area according to the second mapping method when the CCE aggregation degree is equal to the maximum value of CCE supported by the downlink control information transmission area.

[0296] In another device embodiment of the present disclosure, the downlink control information transmission area determined by the above-mentioned transmission area determination module 31 may include: mapping areas of different sizes;

[0297] Correspondingly, referring to Figure 18 According to another device block diagram for transmitting MTC downlink control information shown in an exemplary embodiment, based on the device embodiment shown in Figure 13 the resource mapping module 33 may include:

[0298] The second CCE aggregation degree determination sub-module 3321 is configured to determine the CCE aggregation degree of the current mapping area;

[0299] The third resource mapping sub-module 3322 is configured to map the target physical resource in the current mapping area according to the first mapping method when the CCE aggregation degree of the current mapping area is less than the maximum value of CCE supported by the current mapping area;

[0300] The fourth resource mapping sub-module 3323 is configured to map the target physical resource in the current mapping area according to the second mapping method when the CCE aggregation degree of the current mapping area is equal to the maximum value of CCE supported by the current mapping area.

[0301] Correspondingly, the present disclosure further provides a device for transmitting MTC downlink control information, which is set in a machine type communication MTC device. The MTC device supports searching for downlink control information DCI from a target resource area, and the target resource area is the control area of the original LTE system.

[0302] Referring to Figure 19 According to a device block diagram for transmitting MTC downlink control information shown in an exemplary embodiment, the device may include:

[0303] The transmission area determination module 41 is configured to obtain the control resource configuration information sent by the base station and determine the DCI transmission area;

[0304] A search area determination module 42, configured to determine a target search area according to preset reference information and the DCI transmission area, where the preset reference information includes: the aggregation degree of blind detection control channel elements (CCEs), or the physical resource configuration information sent by the base station;

[0305] A DCI detection module 43, configured to detect target downlink control information from the target search area according to a preset blind detection CCE aggregation degree.

[0306] In an apparatus embodiment of the present disclosure, if the preset reference information includes: the aggregation degree of blind detection control channel elements (CCEs). Refer to Figure 20 According to another block diagram of an apparatus for transmitting MTC downlink control information shown in an exemplary embodiment, on the basis of the apparatus embodiment shown in Figure 19 the search area determination module 42 may include:

[0307] A CCE aggregation degree determination sub-module 4211, configured to determine the aggregation degree of blind detection CCEs of a to-be-detected area, where the to-be-detected area includes: the DCI transmission area, or a mapped area of the DCI transmission area;

[0308] A first search area determination sub-module 4212, configured to, when the aggregation degree of blind detection CCEs is equal to the maximum value of CCEs that the to-be-detected area can support, determine the effective area of the entire to-be-detected area as the target search area, where the effective area is the area of the entire to-be-detected area excluding cell reference signal (CRS) resources;

[0309] A second search area determination sub-module 4213, configured to, when the aggregation degree of blind detection CCEs is less than the maximum value of CCEs that the to-be-detected area can support, determine the part of the to-be-detected area excluding the target resource area as the target search area.

[0310] In an apparatus embodiment of the present disclosure, if the preset reference information includes: the physical resource configuration information sent by the base station. Refer to Figure 21 According to another block diagram of an apparatus for transmitting MTC downlink control information shown in an exemplary embodiment, on the basis of the apparatus embodiment shown in Figure 19 the search area determination module 42 may include:

[0311] A resource mapping mode determination sub-module 4221, configured to determine a preset resource mapping mode of a to-be-detected area according to the physical resource configuration information, where the to-be-detected area includes: the DCI transmission area, or a mapped area of the DCI transmission area;

[0312] The third search area determination sub-module 4222 is configured to, when the preset resource mapping method is the first mapping method, determine the part of the area to be detected excluding the target resource area as the target search area;

[0313] The fourth search area determination sub-module 4223 is configured to, when the preset resource mapping method is the second mapping method, determine the valid area of the entire area to be detected as the target search area, where the valid area is the area of the area to be detected excluding the cell reference signal (CRS) resources;

[0314] Wherein, the first mapping method is configured to map the target physical resource in the data area of the original LTE system, and the target physical resource is used to carry the downlink control information of the MTC device;

[0315] The second mapping method is configured to map the target physical resource in the valid area of a subframe, where the valid area of the subframe is the time-frequency area after removing the cell reference signal resources from the subframe.

[0316] See Figure 22 According to another device block diagram for transmitting MTC downlink control information shown in an exemplary embodiment, based on the device embodiment shown in Figure 19 the device may further include:

[0317] The device capability reporting module 40 is configured to report device capability information to the base station, where the device capability information is used to indicate whether the MTC device has the ability to search for downlink control information from the target resource area, so that the base station maps the target physical resource for carrying the MTC downlink control information in the preset downlink control information transmission area according to the device capability information.

[0318] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The device embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the present disclosure solution. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0319] Correspondingly, on the one hand, a base station is provided, including:

[0320] A processor;

[0321] A memory for storing processor-executable instructions;

[0322] Wherein, the processor is configured to:

[0323] Determine a downlink control information transmission area configured for a machine type communication (MTC) device, generate control resource configuration information, and send it to the MTC device;

[0324] Determine the information detection capability of MTC devices within the downlink control information transmission area, where the information detection capability indicates whether the MTC device supports searching for downlink control information from a target resource area, and the target resource area is the control area of the original LTE system;

[0325] Map target physical resources in the downlink control information transmission area according to the information detection capability and a preset resource mapping method, where the target physical resources are used to carry the downlink control information of the MTC device;

[0326] Transmit downlink control information to the MTC device through the target physical resources mapped in the downlink control information transmission area. On the other hand, a user equipment is provided. The user equipment belongs to an MTC device, and the MTC device supports searching for downlink control information (DCI) from a target resource area, where the target resource area is the control area of the original LTE system, and includes:

[0327] A processor;

[0328] A memory for storing processor-executable instructions;

[0329] Wherein, the processor is configured to:

[0330] Obtain control resource configuration information sent by a base station and determine a DCI transmission area;

[0331] Determine a target search area according to preset reference information and the DCI transmission area, where the preset reference information includes: the aggregation degree of blind detection control channel elements (CCEs), or the physical resource configuration information sent by the base station;

[0332] Detect target downlink control information from the target search area according to a preset blind detection CCE aggregation degree.

[0333] As Figure 23 shown, Figure 23 is a schematic structural diagram of a base station 2300 shown according to an exemplary embodiment. Referring to Figure 23 , the base station 2300 includes a processing component 2322, a radio transmitting / receiving component 2324, an antenna component 2323, and a signal processing part specific to the radio interface. The processing component 2322 may further include one or more processors.

[0334] One of the processors in the processing component 2322 may be configured to:

[0335] Determine a downlink control information transmission area configured for a machine-type communication (MTC) device, generate control resource configuration information, and send it to the MTC device;

[0336] Determine the information detection capability of MTC devices within the downlink control information transmission area, where the information detection capability indicates whether the MTC device supports searching for downlink control information from a target resource area, and the target resource area is the control area of the original LTE system;

[0337] Map target physical resources in the downlink control information transmission area according to the information detection capability and a preset resource mapping method, where the target physical resources are used to carry the downlink control information of the MTC device;

[0338] Transmit downlink control information to the MTC device through the target physical resources mapped in the downlink control information transmission area.

[0339] In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, on which computer instructions are stored, and the above computer instructions can be executed by the processing component 2322 of the base station 2300 to complete Figures 1 to 8-4 Any of the methods for transmitting MTC downlink control information described above. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0340] Figure 24 FIG. is a schematic structural diagram of a user equipment 2400 shown according to an exemplary embodiment. For example, the user equipment 2400 may be a terminal supporting machine-type communication (MTC) services, and may specifically be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, a smart meter, a smart transportation vehicle such as a shared bicycle, a wearable device such as a smart watch, smart glasses, a smart bracelet, a smart running shoe, etc.

[0341] Referring to Figure 24 , the user equipment 2400 may include one or more of the following components: a processing component 2402, a memory 2404, a power component 2406, a multimedia component 2408, an audio component 2410, an input / output (I / O) interface 2412, a sensor component 2414, and a communication component 2416.

[0342] The processing component 2402 generally controls the overall operation of the user device 2400, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 2402 may include one or more processors 2420 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 2402 may include one or more modules to facilitate the interaction between the processing component 2402 and other components. For example, the processing component 2402 may include a multimedia module to facilitate the interaction between the multimedia component 2408 and the processing component 2402.

[0343] The memory 2404 is configured to store various types of data to support the operation on the user device 2400. Examples of such data include instructions for any application or method operating on the user device 2400, contact data, phone book data, messages, pictures, videos, etc. The memory 2404 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0344] The power component 2406 provides power to various components of the user device 2400. The power component 2406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the user device 2400.

[0345] The multimedia component 2408 includes a screen that provides an output interface between the above user device 2400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The above touch sensors can not only sense the boundaries of touch or swipe actions, but also detect the duration and pressure associated with the above touch or swipe operations. In some embodiments, the multimedia component 2408 includes a front camera and / or a rear camera. When the device 2400 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capabilities.

[0346] The audio component 2410 is configured to output and / or input audio signals. For example, the audio component 2410 includes a microphone (MIC), which is configured to receive external audio signals when the user device 2400 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 2404 or transmitted via the communication component 2416. In some embodiments, the audio component 2410 further includes a speaker for outputting audio signals.

[0347] The I / O interface 2412 provides an interface between the processing component 2402 and peripheral interface modules, and the peripheral interface modules can be a keyboard, a click wheel, buttons, etc. These buttons can include but are not limited to: a home button, a volume button, a power button, and a lock button.

[0348] The sensor component 2414 includes one or more sensors for providing status assessments of various aspects of the user device 2400. For example, the sensor component 2414 can detect the on / off state of the device 2400, the relative positioning of components, such as the display and keypad of the user device 2400. The sensor component 2414 can also detect a change in the position of the user device 2400 or a component of the user device 2400, the presence or absence of contact between the user and the user device 2400, the orientation or acceleration / deceleration of the user device 2400, and the temperature change of the user device 2400. The sensor component 2414 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 2414 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 2414 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0349] The communication component 2416 is configured to facilitate communication between the user device 2400 and other devices in a wired or wireless manner. The user device 2400 can access a wireless network based on communication standards, such as WiFi, 2G, 3G, 4G LTE, 5G NR, or a combination thereof. In an exemplary embodiment, the communication component 2416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 2416 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0350] In an exemplary embodiment, the user equipment 2400 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above method.

[0351] In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as a memory 2404 including instructions, and the above instructions can be executed by a processor 2420 of the user equipment 2400 to complete the above Figures 9 to 12 any of the methods for transmitting MTC downlink control information. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0352] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0353] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A method for transmitting MTC downlink control information, characterized in that, applied to a base station, the method includes: Determine the downlink control information transmission area configured for machine type communication (MTC) devices, generate control resource configuration information and send it to the MTC devices, wherein the downlink control information transmission area is the time-frequency resource corresponding to 2 PRB pairs, 4 PRB pairs or 6 PRB pairs; Determine the information detection capability of MTC devices within the downlink control information transmission area, where the information detection capability indicates whether the MTC device supports searching for downlink control information from the target resource area, and the target resource area is the control area of the original LTE system; According to the information detection capability and the preset resource mapping method, map the target physical resources within the downlink control information transmission area, where the target physical resources are used to carry the downlink control information of the MTC devices; Wherein, the preset resource mapping method includes at least one of the following: The first mapping method, configured to map the target physical resources in the data area of the original LTE system; The second mapping method, configured to map the target physical resources in the valid area of a subframe; Transmit the downlink control information to the MTC devices through the target physical resources mapped in the downlink control information transmission area.

2. The method according to claim 1, characterized in that, wherein, Mapping the target physical resources in the data area includes: mapping the target physical resources in the valid area within the data area, where the valid area is the time-frequency area after removing the cell reference signal resources in the subframe.

3. The method according to claim 1, characterized in that, The control area includes: the time-frequency area corresponding to the first 3 consecutive OFDM symbols in a subframe.

4. The method according to claim 1, characterized in that, The data area includes: the time-frequency area other than the time-frequency area corresponding to the last 11 consecutive OFDM symbols in a subframe.

5. The method according to claim 1, characterized in that, The determination of the information detection capability of MTC devices within the downlink control information transmission area includes: Obtain the device capability information reported by each MTC device; Determine the information detection capability of the MTC device according to the device capability information.

6. The method according to claim 5, characterized in that, The device capability information includes: a preset indication value for indicating the information detection capability; The determination of the information detection capability of the MTC device according to the device capability information includes: In response to the preset indication value being the first indication value, determine that the MTC device supports searching for downlink control information from the target resource area; In response to the preset indication value being the second indication value, determine that the MTC device does not support searching for downlink control information from the target resource area.

7. The method according to claim 1, characterized in that, The mapping of the target physical resources within the downlink control information transmission area according to the information detection capability and the preset resource mapping method includes: In response to the MTC device not supporting searching for downlink control information from the target resource area, map the target physical resource in the downlink control information transmission area according to a first mapping method; wherein the first mapping method is to map the target physical resource in the data area of the original LTE system.

8. The method according to claim 1, characterized in that, the mapping of the target physical resource in the downlink control information transmission area according to the information detection capability and a preset resource mapping method includes: In response to the MTC device supporting searching for downlink control information from the target resource area, determine the target resource mapping method of the target physical resource and perform resource mapping, where the target resource mapping method is a first mapping method or a second mapping method; Generate physical resource configuration information according to the target resource mapping method, where the physical resource configuration information is used to inform the MTC device of the mapping range of the target physical resource; Send the physical resource configuration information to the MTC device through high-layer signaling; where the first mapping method is to map the target physical resource in the data area of the original LTE system; and the second mapping method is to map the target physical resource in the valid area of a subframe.

9. The method according to claim 1, characterized in that, the method further includes: If the MTC device supports searching for downlink control information from the target resource area, determine that the preset resource mapping method is a first mapping method or a second mapping method according to the control channel element CCE aggregation degree; where the first mapping method is to map the target physical resource in the data area of the original LTE system; and the second mapping method is to map the target physical resource in the valid area of a subframe.

10. The method according to claim 9, characterized in that, the determining that the preset resource mapping method is a first mapping method or a second mapping method according to the control channel element CCE aggregation degree includes: Determine the CCE aggregation degree of the downlink control information transmission area; If the CCE aggregation degree is less than the maximum CCE value supported by the downlink control information transmission area, map the target physical resource in the downlink control information transmission area according to the first mapping method; If the CCE aggregation degree is equal to the maximum CCE value supported by the downlink control information transmission area, map the target physical resource in the downlink control information transmission area according to the second mapping method.

11. The method according to claim 9, characterized in that, the downlink control information transmission area includes: mapping areas of different sizes; the mapping of the target physical resource in the downlink control information transmission area according to the CCE aggregation degree includes: Determine the CCE aggregation degree of the current mapping area; In response to the CCE aggregation degree of the current mapping area being less than the maximum CCE value supported by the current mapping area, map the target physical resource in the current mapping area according to the first mapping method; In response to the CCE aggregation degree of the current mapping area being equal to the maximum value of CCEs supported by the current mapping area, map the target physical resource in the current mapping area according to the second mapping method.

12. A method for transmitting MTC downlink control information Characterized in that Applied to a machine type communication (MTC) device, the method includes: According to the determined downlink control information transmission area configured by the base station for the MTC device, obtain the control resource configuration information sent by the base station, where the downlink control information transmission area is the time-frequency resource corresponding to 2 PRB pairs, 4 PRB pairs, or 6 PRB pairs; Report device capability information to the base station, where the device capability information is used to indicate whether the MTC device has the ability to search for downlink control information from a target resource area, so that the base station maps the target physical resource for carrying the MTC downlink control information in the downlink control information transmission area according to the device capability information and a preset resource mapping method, where the target resource area is the control area of the original LTE system; Wherein, the preset resource mapping method includes at least one of the following: The first mapping method, configured to map the target physical resource in the data area of the original LTE system; The second mapping method, configured to map the target physical resource in the valid area of a subframe; Receive the downlink control information transmitted by the target physical resource mapped by the base station through the downlink control information transmission area; where the target physical resource mapped by the downlink control information transmission area is the mapped target physical resource in the downlink control information transmission area determined by the base station according to the device capability information and the preset resource mapping method.

13. The method according to claim 12, Characterized in that Wherein, Mapping the target physical resource in the data area includes: mapping the target physical resource in the valid area of the data area, where the valid area is the time-frequency area after removing the cell reference signal resource in the subframe.

14. The method according to claim 12, Characterized in that The control area includes: the time-frequency area corresponding to the first 3 consecutive OFDM symbols in a subframe.

15. The method according to claim 12, Characterized in that The data area includes: the time-frequency area other than the time-frequency area corresponding to the last 11 consecutive OFDM symbols in a subframe.

16. The method according to claim 12, Characterized in that The device capability information includes: a preset indication value for representing the information detection capability; Reporting the device capability information to the base station includes: The preset indication value is the first indication value, indicating that the MTC device supports searching for downlink control information from the target resource area; The preset indication value is the second indication value, indicating that the MTC device does not support searching for downlink control information from the target resource area.

17. The method according to claim 12, Characterized in that Receiving the downlink control information transmitted by the target physical resource mapped by the base station through the downlink control information transmission area includes: Receiving downlink control information transmitted on a target physical resource in response to the MTC device not supporting searching for downlink control information from the target resource region; wherein the target physical resource is the target physical resource mapped by the base station according to a first mapping method for determining a downlink control information transmission region; the first mapping method is mapping the target physical resource in the data region of the original LTE system.

18. The method according to claim 12, wherein, the receiving the downlink control information transmitted on the target physical resource mapped by the base station through the downlink control information transmission region includes: Receiving downlink control information transmitted on a target physical resource in response to the MTC device supporting searching for downlink control information from the target resource region; wherein the target physical resource is the target physical resource mapped by the base station according to a target resource mapping method for determining a downlink control information transmission region; the target resource mapping method is the first mapping method or the second mapping method; the first mapping method is mapping the target physical resource in the data region of the original LTE system; the second mapping method is mapping the target physical resource in the valid region of a subframe; Receiving physical resource configuration information sent by the base station; the physical resource configuration information is used to determine the mapping range of the target physical resource of the MTC device.

19. The method according to claim 12, wherein, the receiving the downlink control information transmitted on the target physical resource mapped by the base station through the downlink control information transmission region includes: Receiving downlink control information transmitted on a target physical resource in response to the MTC device supporting searching for downlink control information from the target resource region; wherein the target physical resource is the target physical resource mapped by the base station according to a target resource mapping method for determining a downlink control information transmission region; wherein the base station determines that the preset resource mapping method is the first mapping method or the second mapping method according to the control channel element CCE aggregation degree; the first mapping method is mapping the target physical resource in the data region of the original LTE system; the second mapping method is mapping the target physical resource in the valid region of a subframe.

20. The method according to claim 19, wherein, the base station determining that the preset resource mapping method is the first mapping method or the second mapping method according to the control channel element CCE aggregation degree includes: Determining the CCE aggregation degree of the downlink control information transmission region; If the CCE aggregation degree is less than the maximum CCE value supported by the downlink control information transmission region, mapping the target physical resource in the downlink control information transmission region according to the first mapping method; If the CCE aggregation degree is equal to the maximum CCE value supported by the downlink control information transmission region, mapping the target physical resource in the downlink control information transmission region according to the second mapping method.

21. The method according to claim 19, wherein, the downlink control information transmission region includes: mapping regions of different sizes; Mapping the target physical resource in the downlink control information transmission area according to the CCE aggregation degree includes: Determining the CCE aggregation degree of the current mapping area; In response to the CCE aggregation degree of the current mapping area being less than the maximum CCE value supported by the current mapping area, mapping the target physical resource in the current mapping area according to the first mapping method; In response to the CCE aggregation degree of the current mapping area being equal to the maximum CCE value supported by the current mapping area, mapping the target physical resource in the current mapping area according to the second mapping method.

22. A device for transmitting MTC downlink control information Characterized in that It is set in a base station, and the device includes: A transmission area determination module, configured to determine a downlink control information transmission area configured for a machine type communication (MTC) device, generate control resource configuration information, and send it to the MTC device, where the downlink control information transmission area is time-frequency resources corresponding to 2 PRB pairs, 4 PRB pairs, or 6 PRB pairs; An ability determination module, configured to determine the information detection ability of the MTC device in the downlink control information transmission area, where the information detection ability indicates whether the MTC device supports searching for downlink control information from a target resource area, and the target resource area is the control area of the original LTE system; A resource mapping module, which maps a target physical resource in the downlink control information transmission area according to the information detection ability and a preset resource mapping method, where the target physical resource is used to carry the downlink control information of the MTC device; Wherein, the preset resource mapping method includes at least one of the following: A first mapping method, configured to map the target physical resource in the data area of the original LTE system; A second mapping method, configured to map the target physical resource in the valid area of a subframe; An information transmission module, configured to transmit downlink control information to the MTC device through the target physical resource mapped in the downlink control information transmission area.

23. A device for transmitting MTC downlink control information Characterized in that It is set in a machine type communication (MTC) device, the MTC device supports searching for downlink control information (DCI) from a target resource area, the target resource area is the control area of the original LTE system, and the MTC device presets the blind detection control channel element (CCE) aggregation degree; The device includes: An acquisition module, configured to acquire the control resource configuration information sent by the base station according to the determined downlink control information transmission area configured for the machine type communication (MTC) device, where the downlink control information transmission area is time-frequency resources corresponding to 2 PRB pairs, 4 PRB pairs, or 6 PRB pairs; A sending module, configured to send device capability information to the base station, where the device capability information is used to indicate whether the MTC device has the capability to search for downlink control information from the target resource area, so that the base station maps, according to the device capability information and a preset resource mapping method, a target physical resource for carrying MTC downlink control information in the downlink control information transmission area, where the target resource area is the control area of the original LTE system. Wherein, the preset resource mapping method includes at least one of the following: A first mapping method, configured to map the target physical resource in the data area of the original LTE system; A second mapping method, configured to map the target physical resource in the valid area of a subframe; A receiving module, configured to receive the downlink control information transmitted by the target physical resource mapped by the base station in the downlink control information transmission area; wherein the target physical resource mapped by the downlink control information transmission area is the mapped target physical resource in the downlink control information transmission area determined by the base station according to the device capability information and the preset resource mapping method.

24. A non-transitory computer-readable storage medium, on which a computer program is stored. Characterized in that when the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 11, or when the computer program is executed by a processor, it implements the steps of the method according to any one of claims 12 to 21.

25. A base station Characterized in that it includes: a processor; a memory for storing a computer program executable by the processor; wherein, the processor is configured to perform the following operations: determine a downlink control information transmission area configured for a machine type communication (MTC) device, generate control resource configuration information and send it to the MTC device, where the downlink control information transmission area is the time-frequency resource corresponding to 2 PRB pairs, 4 PRB pairs or 6 PRB pairs; determine the information detection capability of the MTC device in the downlink control information transmission area, where the information detection capability indicates whether the MTC device supports searching for downlink control information from the target resource area, and the target resource area is the control area of the original LTE system; map a target physical resource in the downlink control information transmission area according to the information detection capability and the preset resource mapping method, where the target physical resource is used to carry the downlink control information of the MTC device; wherein, the preset resource mapping method includes at least one of the following: a first mapping method, configured to map the target physical resource in the data area of the original LTE system; a second mapping method, configured to map the target physical resource in the valid area of a subframe; transmit downlink control information to the MTC device through the target physical resource mapped by the downlink control information transmission area.

26. A machine type communication (MTC) device including: a processor; a memory for storing a computer program executable by the processor; wherein, the processor is configured to perform the following operations: Obtain the control resource configuration information sent by the base station according to the downlink control information transmission area configured for the machine type communication (MTC) device by the determined base station, where the downlink control information transmission area is the time-frequency resource corresponding to 2 physical resource blocks (PRBs), 4 PRBs or 6 PRBs; Report the device capability information to the base station, where the device capability information is used to indicate whether the MTC device has the capability to search for downlink control information from the target resource area, so that the base station maps the target physical resource for carrying the MTC downlink control information in the downlink control information transmission area according to the device capability information and the preset resource mapping method, where the target resource area is the control area of the original LTE system; Wherein, the preset resource mapping method includes at least one of the following: The first mapping method, which is configured to map the target physical resource in the data area of the original LTE system; The second mapping method, which is configured to map the target physical resource in the valid area of a subframe; Receive the downlink control information transmitted by the base station through the target physical resource mapped in the downlink control information transmission area; where the target physical resource mapped in the downlink control information transmission area is the mapped target physical resource in the downlink control information transmission area determined by the base station according to the device capability information and the preset resource mapping method.

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