Method and device for determining downlink control information format size

Abstract

The present invention relates to a method and device for determining the size of a downlink control information format. The method comprises: determining the size of the DCI format that a terminal needs to detect according to the length of the information bits carried by the downlink control information DCI format; and sending the size of the DCI format to the terminal. The technical solution determines the size of the DCI format according to the length of the information bits actually carried by the DCI format. The size of the DCI format is related to the length of the information bits actually carried by the DCI format, which can avoid the problem of resource waste caused by the fixed-length DCI format in the related art and improve resource utilization.

Description

[0001] This application is a divisional application. The application number of the original application is: 201880000506.9, the application date is April 4, 2018, and the name of the invention is "Method and device for determining the format size of downlink control information". Technical Field

[0002] The present invention relates to the field of communication technology, and in particular to a method and device for determining the size of a downlink control information format. Background Art

[0003] In the Long Term Evolution (LTE) communication system, the transmission of physical layer uplink and downlink data is scheduled by the base station sending downlink control information (DCI). At the same time, the downlink control information can also be used by the base station to transmit some information for public control, such as the transmission of system information, the transmission of paging information, the transmission of power control information, etc. In the LTE system, a variety of DCI formats are defined. Based on the different transmission modes of the terminal, the terminal needs to detect different DCI formats to obtain scheduling information. At the same time, the terminal also needs to detect the DCI format used for public control. In the LTE system, DCI formats 1A and 1C are defined to carry the scheduling of public information transmission.

[0004] With the emergence of new Internet applications such as the new generation of augmented reality technology (AR) / virtual reality technology (VR), vehicle-to-vehicle communication, etc., higher requirements are put forward for wireless communication technology, driving the continuous evolution of wireless communication technology to meet the needs of applications. At present, cellular mobile communication technology is in the evolution stage of the new generation of communication technology. An important feature of the new generation of communication technology is to support flexible configuration of multiple service types. Since different service types have different requirements for wireless communication technology, such as the enhanced mobile broadband (eMBB) service type mainly focuses on large bandwidth, high rate, etc., the ultra reliable low latency communication (URLLC) service type mainly focuses on high reliability and low latency, and the massive machine type communication (mMTC) service type mainly focuses on a large number of connections. Therefore, the new generation of wireless communication systems need to support the transmission of multiple service types through flexible and configurable designs.

[0005] In the related art, for the new generation of wireless communication systems, currently, standardization organizations have also defined several DCI formats for scheduling public information transmission and scheduling uplink and downlink data. Summary of the invention

[0006] In order to overcome the problems existing in the related art, an embodiment of the present invention provides a method and device for determining the size of a downlink control information format. The technical solution is as follows:

[0007] According to a first aspect of an embodiment of the present invention, a method for determining a downlink control information format size is provided, which is applied to a network device side, and the method includes:

[0008] Determine, according to the length of the information bits carried by the downlink control information DCI format, the size of the DCI format that the terminal needs to detect;

[0009] The size of the DCI format is sent to the terminal.

[0010] In one embodiment, the sending the size of the DCI format to the terminal includes:

[0011] Sending a system message to the terminal, wherein the system message carries information capable of determining the length of the information bits carried by the DCI format; or,

[0012] A first control signaling is sent to the terminal, wherein the first control signaling carries information capable of determining a length of information bits carried by the DCI format.

[0013] In one embodiment, determining the size of the DCI format that the terminal needs to detect according to the length of information bits carried by the downlink control information DCI format includes:

[0014] When the length of the information bits carried by the DCI format is less than the size of the predetermined DCI format, a preset sequence is padded after the information bits in the DCI format, and the size of the DCI format after padded is the same as the size of the predetermined DCI format;

[0015] The size of the DCI format after padding is determined as the size of the DCI format that the terminal needs to detect.

[0016] In one embodiment, the method further comprises:

[0017] A second control signaling is sent to the terminal, wherein the second control signaling carries the size of the predetermined DCI format and the number of sizes of the predetermined DCI formats.

[0018] In one embodiment, the method further comprises:

[0019] Sending cyclic redundancy check (CRC) length information for the DCI format to the terminal;

[0020] or,

[0021] The proportional relationship between the CRC length and the size of the DCI format is sent to the terminal.

[0022] According to a second aspect of an embodiment of the present invention, a method for determining a downlink control information format size is provided, which is applied to a terminal side, and the method includes:

[0023] receiving a size of a downlink control information DCI format sent by a network device, where the size of the DCI format is determined by the network device according to the length of information bits carried by the DCI format and the size of the DCI format that the terminal needs to detect;

[0024] When a DCI matching the size of the DCI format is detected, information bits carried by the DCI format are obtained.

[0025] In one embodiment, the size of the downlink control information DCI format sent by the receiving network device includes:

[0026] receiving a system message sent by the network device, where the system message includes information capable of determining a length of information bits carried by the DCI format; or,

[0027] A first control signaling sent by the network device is received, where the first control signaling includes information capable of determining a length of information bits carried by the DCI format.

[0028] In one embodiment, the method further comprises:

[0029] receiving a second control signaling sent by the network device, wherein the second control signaling carries the size of the predetermined DCI format and the number of sizes of the predetermined DCI formats;

[0030] The number of blind detection times of the terminal is determined according to the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

[0031] In one embodiment, the method further comprises:

[0032] Receiving a proportional relationship between a cyclic redundancy check (CRC) length sent by the network device and a size of the DCI format; determining a CRC length for the DCI format according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format;

[0033] or,

[0034] Receive CRC length information for the DCI format sent by the network device.

[0035] According to a third aspect of an embodiment of the present invention, a device for determining a downlink control information format size is provided, including:

[0036] A first determination module, configured to determine the size of the DCI format that the terminal needs to detect according to the length of the information bits carried by the downlink control information DCI format;

[0037] The first sending module is used to send the size of the DCI format to the terminal.

[0038] In one embodiment, the first sending module sends a system message to the terminal, and the system message carries information that can determine the length of the information bits carried by the DCI format; or, the first sending module sends a first control signaling to the terminal, and the first control signaling carries information that can determine the length of the information bits carried by the DCI format.

[0039] In one embodiment, the first determining module includes:

[0040] A filling submodule, used for filling a preset sequence after the information bit in the DCI format when the length of the information bit carried by the DCI format is less than the size of the predetermined DCI format, and the size of the DCI format after filling is the same as the size of the predetermined DCI format;

[0041] The determination submodule is used to determine the size of the DCI format after filling as the size of the DCI format that the terminal needs to detect.

[0042] In one embodiment, the apparatus further comprises:

[0043] The second sending module is used to send a second control signaling to the terminal, and the second control signaling carries the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

[0044] In one embodiment, the apparatus further comprises:

[0045] The third sending module is used to send the cyclic redundancy check CRC length information for the DCI format to the terminal; or send the proportional relationship between the CRC length and the size of the DCI format to the terminal.

[0046] According to a fourth aspect of an embodiment of the present invention, a device for determining a downlink control information format size is provided, including:

[0047] A first receiving module, configured to receive the size of a downlink control information DCI format sent by a network device, where the size of the DCI format is determined by the network device according to the length of the information bits carried by the DCI format and the size of the DCI format that the terminal needs to detect;

[0048] The first acquisition module is used to acquire information bits carried by the DCI format when a DCI matching the size of the DCI format is detected.

[0049] In one embodiment, the first receiving module receives a system message sent by the network device, wherein the system message includes information capable of determining the length of information bits carried by the DCI format; or, the first receiving module receives a first control signaling sent by the network device, wherein the first control signaling includes information capable of determining the length of information bits carried by the DCI format.

[0050] In one embodiment, the apparatus further comprises:

[0051] A second receiving module, configured to receive a second control signaling sent by the network device, wherein the second control signaling carries the size of the predetermined DCI format and the number of sizes of the predetermined DCI formats;

[0052] The second determination module is used to determine the number of blind detection times of the terminal according to the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

[0053] In one embodiment, the apparatus further comprises:

[0054] A third receiving module is used to receive a proportional relationship between a cyclic redundancy check CRC length sent by the network device and a size of the DCI format;

[0055] The third determination module is used to determine the CRC length for the DCI format according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format.

[0056] In one embodiment, the apparatus further comprises:

[0057] The fourth receiving module is used to receive the CRC length information for the DCI format sent by the network device.

[0058] According to a fifth aspect of an embodiment of the present invention, a device for determining a downlink control information format size is provided, including:

[0059] processor;

[0060] a memory for storing processor-executable instructions;

[0061] Wherein, the processor is configured to:

[0062] Determine, according to the length of the information bits carried by the downlink control information DCI format, the size of the DCI format that the terminal needs to detect;

[0063] The size of the DCI format is sent to the terminal.

[0064] According to a sixth aspect of an embodiment of the present invention, a device for determining a downlink control information format size is provided, including:

[0065] processor;

[0066] a memory for storing processor-executable instructions;

[0067] Wherein, the processor is configured to:

[0068] receiving a size of a downlink control information DCI format sent by a network device, where the size of the DCI format is determined by the network device according to the length of information bits carried by the DCI format and the size of the DCI format that the terminal needs to detect;

[0069] When a DCI matching the size of the DCI format is detected, information bits carried by the DCI format are obtained.

[0070] According to a seventh aspect of an embodiment of the present invention, there is provided a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the method described in the first aspect above.

[0071] According to an eighth aspect of an embodiment of the present invention, there is provided a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the method described in the second aspect above.

[0072] The technical solution provided by an embodiment of the present invention may include the following beneficial effects: the technical solution determines the size of the DCI format according to the length of the information bits actually to be carried by the DCI format, and the size of the DCI format is related to the length of the information bits actually to be carried by the DCI format, which can avoid the resource waste problem caused by the fixed-length DCI format in the related art and improve resource utilization.

[0073] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0075] Figure 1 The present invention is a flowchart of a method for determining a downlink control information format size according to an exemplary embodiment.

[0076] Figure 2a The present invention is a flowchart of a method for determining a downlink control information format size according to an exemplary embodiment.

[0077] Figure 2b The present invention is a schematic diagram showing a method of filling a preset sequence in a downlink control information format according to an exemplary embodiment.

[0078] Figure 3 The present invention is a flowchart of a method for determining a downlink control information format size according to an exemplary embodiment.

[0079] Figure 4 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment.

[0080] Figure 5 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment.

[0081] Figure 6 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment.

[0082] Figure 7 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment.

[0083] Figure 8 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment.

[0084] Fig. 9 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment.

[0085] Fig.10 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment.

[0086] Fig.11 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment.

[0087] Fig.12 The present invention is a block diagram of a device for determining a downlink control information format size according to an exemplary embodiment. DETAILED DESCRIPTION

[0088] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0089] In the related art, for the new generation of wireless communication systems, the standardization organization has also defined several DCI formats for scheduling public information transmission and scheduling uplink and downlink data. However, the payload of the DCI format defined in the related art is relatively large. For the transmission of certain information, such a large payload information is not needed to indicate, which results in a waste of resources.

[0090] In order to solve the above problems, an embodiment of the present invention provides a method for determining the size of a downlink control information format, the method comprising: determining the size of a DCI format that a terminal needs to detect according to the length of information bits carried by the downlink control information DCI format; and sending the size of the DCI format to the terminal. In the method for determining the size of a downlink control information format provided by an embodiment of the present invention, the size of the DCI format is related to the length of information bits actually carried by the DCI format, and the size of the DCI format is determined according to the length of information bits actually carried by the DCI format, which can avoid the problem of resource waste caused by the fixed-length DCI format in the related art and improve resource utilization.

[0091] Based on the above analysis, the following specific embodiments are proposed.

[0092] Figure 1 FIG. 1 is a flow chart of a method for determining the size of a downlink control information format according to an exemplary embodiment; the method may be performed by a network device, such as a base station. Figure 1 As shown, the method includes the following steps 101-102:

[0093] In step 101, the size of the DCI format that the terminal needs to detect is determined according to the length of the information bits carried by the DCI format.

[0094] For example, the terminal can be a mobile phone, a tablet computer or a wearable device (such as a bracelet). In the related art, the size of the DCI format is a fixed bit length, and when the bandwidth remains unchanged, the bit length of the DCI format is consistent. Unlike the related art, the size of the DCI format in the present invention is configurable, and the size of the DCI format is not necessarily associated with the bandwidth. The present invention determines the size of the DCI format in the present invention according to the information bits actually carried by the DCI format, by reducing the number of unused information fields in the DCI format in the related art, and reducing the number of unused bits in the information field in the DCI format in the related art. When the length of the information bits actually carried by the DCI format is small, the size of the DCI format is also small, thereby avoiding waste of resources.

[0095] In step 102, the size of the DCI format is sent to the terminal.

[0096] For example, after the network device determines the size of the DCI format that the terminal needs to detect based on the length of the information bits carried by the DCI format, the network device carries the size of the DCI format that the terminal needs to detect or the information that can determine the size of the DCI format in a system message sent to the terminal, or the network device carries the size of the DCI format that the terminal needs to detect or the information that can determine the size of the DCI format in a first control signaling sent to the terminal. The first control signaling includes, for example, high-layer signaling, MAC CE or physical layer signaling. The above-mentioned information that can determine the size of the DCI format includes, for example, information that can determine the length of the information bits carried by the DCI format; the terminal determines the size of the DCI format based on the information that can determine the size of the DCI format.

[0097] For example, the size of the DCI format is notified to the terminal by the network device through the system information. When the terminal performs initial access, the network device carries the size of the DCI format or the information that can determine the length of the information bits carried by the DCI format in the system message sent to the terminal. The terminal receives and parses the corresponding parameters in the system information to obtain the size of the DCI format or the information that can determine the length of the information bits carried by the DCI format. The terminal determines the length of the information bits carried by the DCI format based on the information that can determine the length of the information bits carried by the DCI format, and then determines the size of the DCI format.

[0098] For another example, the size of the DCI format is notified to the terminal by the network device through high-level signaling, MAC CE or physical layer signaling. After the terminal completes the initial access process, the network device carries the size of the DCI format or the information that can determine the length of the information bits carried by the DCI format in the high-level signaling, MAC CE or physical layer signaling sent to the terminal. The terminal receives and parses the high-level signaling, MAC CE or physical layer signaling to obtain the size of the DCI format or the information that can determine the length of the information bits carried by the DCI format. The terminal determines the length of the information bits carried by the DCI format based on the information that can determine the length of the information bits carried by the DCI format, and then determines the size of the DCI format.

[0099] By adopting the technical solution provided in the embodiment of the present invention, the size of the DCI format is determined according to the length of the information bits actually to be carried by the DCI format. The size of the DCI format is related to the length of the information bits actually to be carried by the DCI format. This can avoid the resource waste problem caused by the fixed-length DCI format in the related art and improve resource utilization.

[0100] Figure 2a is a flow chart of a method for determining a downlink control information format size according to an exemplary embodiment. Figure 2a As shown, the method is implemented by the network device and the terminal in cooperation. Figure 1 Based on the illustrated embodiment, the method for determining the size of the downlink control information format according to the present invention may include the following steps 201-206:

[0101] In step 201, the network device obtains the length of information bits carried by the DCI format and the size of a predetermined DCI format.

[0102] For example, the size of the predetermined DCI format can be the size of the DCI format that the terminal needs to detect, such as the size of a certain existing DCI format. The terminal supports at least one DCI format; the network device obtains the capability information of the terminal, and determines the DCI format size that the terminal needs to detect and the number of DCI format sizes that need to be detected based on the capability information of the terminal. Referring to Table 1, the DCI format size that needs to be detected corresponding to terminal capability 1 is 60 bits, and the number of DCI format sizes that need to be detected is 1; the DCI format size that needs to be detected corresponding to terminal capability 2 is 40 bits and 60 bits, and the number of DCI format sizes that need to be detected is 2.

[0103] Table 1

[0104] Terminal Capabilities The number of DCI format sizes that need to be detected The DCI format size to be detected Terminal Capability1 1 60 bits Terminal Capability 2 2 40 bits, 60 bits …… …… …… Terminal Capability N M ……

[0105] For example, the network device sends a second control signaling to the terminal, and the second control signaling carries the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats. For example, the network device can send the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats to the terminal through RRC signaling, MAC CE or physical layer signaling. Alternatively, according to the protocol agreement, the terminal itself pre-stores information such as the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

[0106] In step 202, the network device determines whether the length of the information bits carried by the DCI format is less than the size of the predetermined DCI format; when the length of the information bits carried by the DCI format is less than the size of the predetermined DCI format, go to step 203; when the length of the information bits carried by the DCI format is equal to the size of the predetermined DCI format, go to step 205.

[0107] In step 203, the network device fills a preset sequence after the information bits in the DCI format, so that the size of the DCI format after filling is the same as the size of the predetermined DCI format.

[0108] For example, see Figure 2b By filling a preset sequence after the information bit in DCI format 1, the size (ie, bit length) of DCI format 1 after filling is the same as the size (ie, bit length) of the predetermined DCI format 2.

[0109] In step 204 , the network device determines the size of the DCI format after padding as the size of the DCI format, and sends it to the terminal; go to step 206 .

[0110] In step 205, the network device determines the length of the information bits carried by the DCI format as the size of the DCI format, and sends it to the terminal.

[0111] For example, the network device may send the size of the DCI format to the terminal. Alternatively, the network device sends the length of the information bits carried by the DCI format and the size of the predetermined DCI format to the terminal; the terminal determines the size of the DCI format that the terminal needs to detect according to the length of the information bits carried by the DCI format and the size of the predetermined DCI format.

[0112] Alternatively, the terminal itself pre-stores information such as the size of a predetermined DCI format; the network device only needs to send the length of the information bits carried by the DCI format to the terminal; the terminal determines the size of the DCI format that the terminal needs to detect based on the length of the information bits carried by the DCI format and the size of the predetermined DCI format.

[0113] Alternatively, the terminal itself pre-stores information such as the length of the information bits carried by the DCI format; the network device only needs to send information such as the size of the predetermined DCI format to the terminal; the terminal determines the size of the DCI format that the terminal needs to detect based on the length of the information bits carried by the DCI format and the size of the predetermined DCI format.

[0114] For example, the network device carries the length of the information bits carried by the DCI format and the size of the predetermined DCI format in the system message sent to the terminal. When the terminal performs initial access, the network device carries the length of the information bits carried by the DCI format and the size of the predetermined DCI format in the system message sent to the terminal. The terminal receives and parses the corresponding parameters in the system information to obtain the length of the information bits carried by the DCI format and the size of the predetermined DCI format. The terminal determines the size of the DCI format that the terminal needs to detect according to the length of the information bits carried by the DCI format and the size of the predetermined DCI format. Alternatively, the network device carries the length of the information bits carried by the DCI format and the size of the predetermined DCI format in the control signaling sent to the terminal. After the terminal completes the initial access process, the network device carries the length of the information bits carried by the DCI format and the size of the predetermined DCI format in the high-level signaling, MAC CE or physical layer signaling sent to the terminal. The terminal receives and parses the high-level signaling, MAC CE or physical layer signaling to obtain the length of the information bits carried by the DCI format and the size of the predetermined DCI format.

[0115] For example, in order to distinguish DCI formats with the same DCI length, in one implementation method, the network device can carry indication information in a certain information field of the DCI, and the length of the information field is determined based on the number of DCI formats that need to be filled. For example, if there are four DCI formats that need to be filled into the same DCI format size, then the information field can be a 2-bit information field; the information field can be in a fixed position in the DCI format; the length of the information field is configurable or fixed. In another implementation method, the network device can distinguish different DCI formats by using different Radio Network Temporary Identity (RNTI) or scrambling sequences.

[0116] In step 206, when the terminal detects a DCI that matches the size of a predetermined DCI format, it acquires information bits carried by the DCI format.

[0117] For example, the size of the DCI format that the terminal needs to detect is known according to the size of the predetermined DCI format; after the terminal obtains the number of DCI format sizes that need to be detected, the number of blind detection times of the terminal is determined according to the number of DCI format sizes that need to be detected.

[0118] By adopting the technical solution provided in the embodiment of the present invention, a preset sequence is filled after the information bit in the DCI format, so that the size of the DCI format after filling is the same as the size of the predetermined DCI format, thereby adjusting the lengths of multiple different DCI formats to be consistent. When the terminal performs blind detection, the number of blind detections is determined according to the number of DCI formats that need to be detected, which can reduce the number of blind detections of the terminal.

[0119] In the related art, the length of the cyclic redundancy check (CRC) corresponding to the DCI format is specified by the protocol and is a fixed value. The length of the CRC corresponding to the DCI format has nothing to do with the size of the DCI format, resulting in a certain degree of resource waste. In view of this, a solution to this problem is proposed. Figure 3 is a flow chart of a method for determining a downlink control information format size according to an exemplary embodiment. Figure 3 As shown, the method is implemented by the network device and the terminal in cooperation. Figure 1 Based on the illustrated embodiment, the method for determining the size of the downlink control information format according to the present invention may include the following steps 301-304:

[0120] In step 301, the network device determines the size of the DCI format that the terminal needs to detect according to the length of the information bits carried by the DCI format.

[0121] In step 302, the network device sends the size of the DCI format to the terminal; the terminal receives the size of the DCI format sent by the network device.

[0122] For example, the network device carries the size of the DCI format or information capable of determining the size of the DCI format in a system message sent to the terminal, or the network device carries the size of the DCI format or information capable of determining the size of the DCI format in a first control signaling sent to the terminal. The first control signaling includes, for example, high-layer signaling, MAC CE, or physical layer signaling. The terminal determines the length of the information bits carried by the DCI format based on the information capable of determining the size of the DCI format, and further determines the size of the DCI format.

[0123] In step 303, the network device determines CRC length information for the DCI format according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format.

[0124] In step 304, the network device sends CRC length information for the DCI format to the terminal; the terminal receives the CRC length information for the DCI format sent by the network device.

[0125] For example, the network device sends CRC length information for the DCI format to the terminal through RRC signaling, MAC CE or physical layer signaling. Alternatively, the network device sends the proportional relationship between the CRC length and the size of the DCI format to the terminal through RRC signaling, MAC CE or physical layer signaling; the terminal determines the CRC length for the DCI format according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format.

[0126] In the technical solution provided by the embodiment of the present invention, the size of the DCI format determines the CRC length corresponding to the DCI format. When the size of the DCI format is reduced, the CRC length corresponding to the DCI format is also reduced accordingly, thereby achieving the purpose of saving resources.

[0127] The following are embodiments of the apparatus of the present invention, which can be used to execute embodiments of the method of the present invention.

[0128] Figure 4 The present invention is a block diagram of a device for determining the size of a downlink control information format according to an exemplary embodiment. The device can be implemented as part or all of a network device through software, hardware, or a combination of both. Figure 4 , the downlink control information format size determination device includes: a first determination module 401 and a first sending module 402; wherein:

[0129] The first determination module 401 is configured to determine the size of the DCI format that the terminal needs to detect according to the length of the information bits carried by the downlink control information DCI format;

[0130] The first sending module 402 is configured to send the size of the DCI format to the terminal.

[0131] By using the device provided in the embodiment of the present invention, the size of the DCI format can be determined according to the length of the information bits actually to be carried by the DCI format. The size of the DCI format is related to the length of the information bits actually to be carried by the DCI format. This can avoid the resource waste problem caused by the fixed-length DCI format in the related art and improve resource utilization.

[0132] In one embodiment, the first sending module 402 sends a system message to the terminal, and the system message carries information that can determine the length of the information bits carried by the DCI format; or, the first sending module 402 sends a control signaling to the terminal, and the control signaling carries information that can determine the length of the information bits carried by the DCI format.

[0133] In one embodiment, Figure 5 As shown, Figure 4The device for determining the size of the downlink control information format shown may further include configuring the first determination module 401 to include: a filling submodule 501 and a determination submodule 502, wherein:

[0134] The padding submodule 501 is configured to pad a preset sequence after the information bit in the DCI format when the length of the information bit carried by the DCI format is less than the size of the predetermined DCI format, and the size of the DCI format after padding is the same as the size of the predetermined DCI format;

[0135] The determination submodule 502 is configured to determine the size of the DCI format after padding as the size of the DCI format that the terminal needs to detect.

[0136] In one embodiment, Figure 6 As shown, Figure 4 The device for determining the downlink control information format size shown may also include: a second sending module 601 is configured to send a second control signaling to the terminal, and the second control signaling carries the size of the predetermined DCI format and the number of the predetermined DCI format sizes.

[0137] In one embodiment, Figure 7 As shown, Figure 4 The device for determining the size of the downlink control information format shown may also include: a third sending module 701 is configured to send cyclic redundancy check CRC length information for the DCI format to the terminal; or, send a proportional relationship between the CRC length and the size of the DCI format to the terminal.

[0138] Figure 8 The block diagram of a device for determining the size of a downlink control information format according to an exemplary embodiment is shown. The device can be implemented as part or all of a terminal through software, hardware, or a combination of both. Figure 8 , the downlink control information format size determination device includes: a first receiving module 801 and a first obtaining module 802; wherein:

[0139] The first receiving module 801 is configured to receive the size of the downlink control information DCI format sent by the network device, where the size of the DCI format is the size of the DCI format that the network device determines according to the length of the information bits carried by the DCI format and that the terminal needs to detect;

[0140] The first acquisition module 802 is configured to acquire information bits carried by the DCI format when a DCI matching the size of the DCI format is detected.

[0141] In one embodiment, the first receiving module 801 receives a system message sent by a network device, wherein the system message includes information capable of determining the length of information bits carried by the DCI format; or, the first receiving module 801 receives a control signaling sent by a network device, wherein the control signaling includes information capable of determining the length of information bits carried by the DCI format.

[0142] In one embodiment, Fig. 9 As shown, Figure 8 The device for determining the size of the downlink control information format shown may further include: a second receiving module 901 and a second determining module 902, wherein:

[0143] The second receiving module 901 is configured to receive a second control signaling sent by the network device, wherein the second control signaling carries the size of the predetermined DCI format and the number of sizes of the predetermined DCI formats;

[0144] The second determination module 902 is configured to determine the number of blind detections of the terminal according to the size of the predetermined DCI format and the number of sizes of the predetermined DCI formats.

[0145] In one embodiment, Fig.10 As shown, Figure 8 The device for determining the size of the downlink control information format shown may further include: a third receiving module 1001 and a third determining module 1002, wherein:

[0146] The third receiving module 1001 is configured to receive a proportional relationship between a cyclic redundancy check CRC length and a size of a DCI format sent by a network device;

[0147] The third determination module 1002 is configured to determine the CRC length for the DCI format according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format.

[0148] In one embodiment, Fig.11 As shown, Figure 8 The illustrated apparatus for determining the size of the downlink control information format may further include: a fourth receiving module 1101 configured to receive CRC length information for the DCI format sent by the network device.

[0149] In an exemplary embodiment, a device for determining a downlink control information format size is provided, comprising:

[0150] processor;

[0151] a memory for storing processor-executable instructions;

[0152] The processor is configured as follows:

[0153] Determine the size of the DCI format that the terminal needs to detect according to the length of the information bits carried by the downlink control information DCI format;

[0154] The size of the DCI format sent to the terminal.

[0155] The above processor may also be configured to:

[0156] Send a system message to the terminal, carrying the length of the information bits carried by the DCI format in the system message; or,

[0157] A first control signaling is sent to the terminal, where the first control signaling carries the length of the information bits carried by the DCI format.

[0158] The above processor may also be configured to:

[0159] When the length of the information bits carried by the DCI format is less than the size of the predetermined DCI format, a preset sequence is padded after the information bits in the DCI format, and the size of the DCI format after padded is the same as the size of the predetermined DCI format;

[0160] The size of the DCI format after padding is determined as the size of the DCI format that the terminal needs to detect.

[0161] The above processor may also be configured to:

[0162] A second control signaling is sent to the terminal, wherein the second control signaling carries the size of the predetermined DCI format.

[0163] The above processor may also be configured to:

[0164] Sending cyclic redundancy check (CRC) length information for the DCI format to the terminal;

[0165] or,

[0166] The ratio of the CRC length to the size of the DCI format sent to the terminal.

[0167] In an exemplary embodiment, a device for determining a downlink control information format size is provided, comprising:

[0168] processor;

[0169] a memory for storing processor-executable instructions;

[0170] The processor is configured as follows:

[0171] The size of the downlink control information DCI format sent by the receiving network device, where the size of the DCI format is determined by the network device according to the length of the information bits carried by the DCI format and the size of the DCI format that the terminal needs to detect;

[0172] When a DCI matching the size of the DCI format is detected, information bits carried by the DCI format are obtained.

[0173] The above processor may also be configured to:

[0174] receiving a system message sent by a network device, where the system message includes the length of information bits carried in a DCI format; or,

[0175] A first control signaling sent by a network device is received, where the first control signaling includes the length of information bits carried by the DCI format.

[0176] The above processor may also be configured to:

[0177] receiving a second control signaling sent by the network device, wherein the second control signaling carries the size of the predetermined DCI format;

[0178] The number of blind detection times of the terminal is determined according to the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

[0179] The above processor may also be configured to:

[0180] The ratio between the length of the cyclic redundancy check CRC sent by the receiving network device and the size of the DCI format;

[0181] The CRC length for the DCI format is determined according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format.

[0182] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0183] Fig.12 It is a block diagram of a device for determining the format size of downlink control information according to an exemplary embodiment; the device 1200 for determining the format size of downlink control information is suitable for a terminal; the device 1200 for determining the format size of downlink control information may include one or more of the following components: a processing component 1202, a memory 1204, a power supply component 1206, a multimedia component 1208, an audio component 1210, an input / output (I / O) interface 1212, a sensor component 1214, and a communication component 1216.

[0184] The processing component 1202 generally controls the overall operation of the downlink control information format size determination device 1200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1202 may include one or more processors 1220 to execute instructions to complete all or part of the steps of the above method. In addition, the processing component 1202 may include one or more modules to facilitate the interaction between the processing component 1202 and other components. For example, the processing component 1202 may include a multimedia module to facilitate the interaction between the multimedia component 1208 and the processing component 1202.

[0185] The memory 1204 is configured to store various types of data to support the operation of the downlink control information format size determination device 1200. Examples of such data include instructions for any application or method operating on the downlink control information format size determination device 1200, contact data, phone book data, messages, pictures, videos, etc. The memory 1204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk.

[0186] The power supply component 1206 provides power to various components of the downlink control information format size determination apparatus 1200. The power supply component 1206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the downlink control information format size determination apparatus 1200.

[0187] The multimedia component 1208 includes a screen that provides an output interface between the downlink control information format size determination device 1200 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 touch, slide, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1208 includes a front camera and / or a rear camera. When the downlink control information format size determination device 1200 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0188] The audio component 1210 is configured to output and / or input audio signals. For example, the audio component 1210 includes a microphone (MIC), and when the downlink control information format size determination device 1200 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1204 or sent via the communication component 1216. In some embodiments, the audio component 1210 also includes a speaker for outputting audio signals.

[0189] I / O interface 1212 provides an interface between processing component 1202 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0190] The sensor assembly 1214 includes one or more sensors for providing various aspects of status assessment for the downlink control information format size determination device 1200. For example, the sensor assembly 1214 can detect the open / closed state of the downlink control information format size determination device 1200, the relative positioning of components, such as the display and keypad of the downlink control information format size determination device 1200, the sensor assembly 1214 can also detect the position change of the downlink control information format size determination device 1200 or a component of the downlink control information format size determination device 1200, the presence or absence of user contact with the downlink control information format size determination device 1200, the orientation or acceleration / deceleration of the downlink control information format size determination device 1200 and the temperature change of the downlink control information format size determination device 1200. The sensor assembly 1214 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1214 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0191] The communication component 1216 is configured to facilitate wired or wireless communication between the downlink control information format size determination device 1200 and other devices. The downlink control information format size determination device 1200 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1216 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 1216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0192] In an exemplary embodiment, the device 1200 for determining the format size of the downlink control information can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to execute the above method.

[0193] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1204 including instructions, and the instructions can be executed by the processor 1220 of the downlink control information format size determination device 1200 to complete the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0194] A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the downlink control information format size determination device 1200, enables the downlink control information format size determination device 1200 to perform the following downlink control information format size determination method, the method comprising:

[0195] The size of the downlink control information DCI format sent by the receiving network device, where the size of the DCI format is determined by the network device according to the length of the information bits carried by the DCI format and the size of the DCI format that the terminal needs to detect;

[0196] When a DCI matching the size of the DCI format is detected, information bits carried by the DCI format are obtained.

[0197] In one embodiment, the size of the downlink control information DCI format sent by the receiving network device includes:

[0198] receiving a system message sent by a network device, where the system message includes the length of information bits carried in a DCI format; or,

[0199] A first control signaling sent by a network device is received, where the first control signaling includes the length of information bits carried by the DCI format.

[0200] In one embodiment, the method further comprises:

[0201] receiving a second control signaling sent by the network device, wherein the second control signaling carries the size of the predetermined DCI format;

[0202] The number of blind detection times of the terminal is determined according to the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

[0203] In one embodiment, the method further comprises:

[0204] The ratio between the length of the cyclic redundancy check CRC sent by the receiving network device and the size of the DCI format;

[0205] The CRC length for the DCI format is determined according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format.

[0206] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0207] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for determining the size of a downlink control information format, applied to a network device side, characterized in that: include: Determine the size of the DCI format that the terminal needs to detect according to the length of the information bits actually to be carried by the downlink control information DCI format; Sending high-layer signaling to a terminal, wherein the high-layer signaling carries information for determining the size of the DCI format, wherein the size of the DCI format is determined based on the DCI format and the length of information bits actually to be carried by the DCI format, and the size of the DCI format is configurable, wherein the size of the DCI format is determined by reducing the number of unused information fields in the DCI format or reducing the number of unused bits in the information field in the DCI format.

2. The method according to claim 1, characterized in that The method comprises: In response to the length of the information bits carried by the DCI format being smaller than the size of a predetermined DCI format, a preset sequence is padded after the information bits in the DCI format so that the size of the DCI format after padded is the same as the size of the predetermined DCI format.

3. The method according to claim 2, characterized in that The method further comprises: A second control signaling is sent to the terminal, wherein the second control signaling carries the size of the predetermined DCI format and the number of sizes of the predetermined DCI formats.

4. The method according to claim 1, characterized in that The method further comprises: Sending cyclic redundancy check (CRC) length information for the DCI format to the terminal; or, The proportional relationship between the CRC length and the size of the DCI format is sent to the terminal.

5. A method for determining the size of a downlink control information format, applied to a terminal side, characterized in that: include: Receive high-layer signaling sent by a network device, wherein the high-layer signaling carries information for determining the size of a DCI format, the size of the DCI format is determined by the network device according to the length of information bits actually to be carried by the DCI format and needs to be detected by the terminal, the size of the DCI format is determined based on the DCI format and the length of information bits actually to be carried by the DCI format, and the size of the DCI format is configurable; wherein the size of the DCI format is determined by reducing the number of unused information fields in the DCI format or reducing the number of unused bits in the information field in the DCI format.

6. The method according to claim 5, characterized in that The method further comprises: When a DCI matching the size of the DCI format is detected, information bits carried by the DCI format are obtained.

7. The method according to claim 5, characterized in that The method further comprises: receiving a second control signaling sent by the network device, wherein the second control signaling carries a size of a predetermined DCI format and the number of sizes of the predetermined DCI formats; The number of blind detection times of the terminal is determined according to the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

8. The method according to claim 5, characterized in that The method further comprises: Receiving a proportional relationship between a cyclic redundancy check (CRC) length sent by the network device and a size of the DCI format; determining a CRC length for the DCI format according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format; or, Receive CRC length information for the DCI format sent by the network device.

9. A device for determining the size of a downlink control information format, characterized in that: include: A first determination module, configured to determine the size of the DCI format that the terminal needs to detect according to the length of the information bits actually to be carried by the downlink control information DCI format; A first sending module is used to send high-layer signaling to a terminal, wherein the high-layer signaling carries information used to determine the size of the DCI format, wherein the size of the DCI format is determined based on the DCI format and the length of information bits actually to be carried by the DCI format, and the size of the DCI format is configurable; wherein the size of the DCI format is determined by reducing the number of unused information fields in the DCI format or reducing the number of unused bits in the information field in the DCI format.

10. The device according to claim 9, characterized in that The device comprises: A filling submodule is used to fill a preset sequence after the information bits in the DCI format in response to the length of the information bits carried by the DCI format being smaller than the size of the predetermined DCI format, and the size of the DCI format after filling is the same as the size of the predetermined DCI format.

11. The device according to claim 9, characterized in that The device also includes: The second sending module is used to send a second control signaling to the terminal, and the second control signaling carries the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

12. The device according to claim 9, characterized in that The device also includes: The third sending module is used to send the cyclic redundancy check CRC length information for the DCI format to the terminal; or send the proportional relationship between the CRC length and the size of the DCI format to the terminal.

13. A device for determining the size of a downlink control information format, applied to a terminal side, characterized in that: include: A first receiving module is used to receive high-layer signaling sent by a network device, wherein the high-layer signaling carries information for determining the size of a DCI format, the size of the DCI format is determined by the network device according to the length of information bits actually to be carried by the DCI format and requires terminal detection, the size of the DCI format is determined based on the DCI format and the length of information bits actually to be carried by the DCI format, and the size of the DCI format is configurable; wherein the size of the DCI format is determined by reducing the number of unused information fields in the DCI format or reducing the number of unused bits in the information field in the DCI format.

14. The device according to claim 13, characterized in that The device also includes: The first acquisition module is used to acquire information bits carried by the DCI format when a DCI matching the size of the DCI format is detected.

15. The device according to claim 13, characterized in that The device also includes: A second receiving module, configured to receive a second control signaling sent by the network device, wherein the second control signaling carries a size of a predetermined DCI format and a number of sizes of the predetermined DCI formats; The second determination module is used to determine the number of blind detection times of the terminal according to the size of the predetermined DCI format and the number of the sizes of the predetermined DCI formats.

16. The device according to claim 13, characterized in that The device also includes: A third receiving module is used to receive a proportional relationship between a cyclic redundancy check CRC length sent by the network device and a size of the DCI format; The third determination module is used to determine the CRC length for the DCI format according to the size of the DCI format and the proportional relationship between the CRC length and the size of the DCI format.

17. The device according to claim 13, characterized in that The device also includes: The fourth receiving module is used to receive the CRC length information for the DCI format sent by the network device.

18. A device for determining the size of a downlink control information format, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: Determine the size of the DCI format that the terminal needs to detect according to the length of the information bits actually to be carried by the downlink control information DCI format; Sending high-layer signaling to a terminal, wherein the high-layer signaling carries information for determining the size of the DCI format, wherein the size of the DCI format is determined based on the DCI format and the length of information bits actually to be carried by the DCI format, and the size of the DCI format is configurable; wherein the size of the DCI format is determined by reducing the number of unused information fields in the DCI format or reducing the number of unused bits in the information field in the DCI format.

19. A device for determining the size of a downlink control information format, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: Receive high-layer signaling sent by a network device, wherein the high-layer signaling carries information for determining the size of a downlink control information DCI format, the size of the DCI format is determined by the network device according to the length of information bits actually to be carried by the DCI format and requires terminal detection, the size of the DCI format is determined based on the DCI format and the length of information bits actually to be carried by the DCI format, and the size of the DCI format is configurable; wherein the size of the DCI format is determined by reducing the number of unused information fields in the DCI format or reducing the number of unused bits in the information field in the DCI format.

20. A computer-readable storage medium having computer instructions stored thereon, characterized in that: When the instruction is executed by the processor, the steps of the method described in any one of claims 1 to 4 are implemented; or, when the instruction is executed by the processor, the steps of the method described in any one of claims 5 to 8 are implemented.

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