Base station device, terminal device, and DCI adjustment method performed in each device

Abstract

To provide a technique for adjusting and transmitting size of downlink information.SOLUTION: An apparatus and a method include and deliver as much information as possible while minimizing size of downlink information through a scheme of converting some information (bit values to be converted) of the downlink information into position information (scheduling position) of a PDCCH and delivering the downlink information.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] [CROSS REFERENCE TO RELATED APPLICATIONS] This application claims priority to Korean Patent Application No. 10-2022-0079650, filed on June 29, 2022. The disclosure of the above application is incorporated by reference in its entirety.

[0002] The present invention relates to DCI(Downlink Control Information) This relates to a technology for adjusting the size of a signal and transmitting it. [Background technology]

[0003] A Physical Downlink Control Channel (PDCCH) is a control channel and is used to transmit scheduling information for a Physical Downlink Shared Channel (PDSCH) and scheduling grants for a Physical Uplink Shared Channel (PUSCH).

[0004] The above-mentioned data transmitted using PDCCH of the The information can be generated and transmitted according to a DCI (Downlink Control Information) format defined in the standard.

[0005] DCI There are various formats defined depending on the purpose.

[0006] Like this DCI Since the PDCCH used for transmitting the above is an important channel that contains control information, stable transmission is very important.

[0007] Therefore, the PDCCH is used for transmission. DCI should be designed to contain the maximum amount of information with the minimum amount of size. DCI This is because the smaller the size of is, the more easily it is possible to carry out complementing and transmission during PDCCH transmission.

[0008] For this purpose, the base station generates various profiles in advance and transmits them to the terminal via an RRC message. DCI So, by transmitting only the profile index, DCI There are various techniques for minimizing the size of .

[0009] However, the existing techniques mentioned above also DCI If there is a lot of information to be sent to the device through the device, the number of indexes that must be sent for each piece of information increases, DCI However, there is a limit to how much information can be included and transmitted while minimizing the size of the message.

[0010] Therefore, in this invention, we overcome the limitations of existing techniques and of I We are trying to propose a method that can minimize the size and convey as much information as possible. Summary of the Invention [Problem to be solved by the invention]

[0011] The object of the present invention is to DCI A new method that can minimize the size of the message and transmit as much information as possible. DCI The objective of the present invention is to propose and realize a transmission technology. [Means for solving the problem]

[0012] In order to achieve the above object, a base station apparatus according to an embodiment of the present invention provides a Downlink Control Information(DCI) A determination unit for determining specific information for converting a part of the entire information; and DCI After omitting the above part of the information, the terminal transmits the information based on the determined specific information. DCI The partial information is obtained from the specific information obtained during the process of receiving the transmission of the DCIA control unit that enables the device to acquire the

[0013] In order to achieve the above object, a terminal device according to one embodiment of the present invention comprises: Downlink Control Information(DCI) When receiving, the above DCI The above information is obtained from the specific information acquired during the process of receiving the transmission. DCI and an information acquisition unit for acquiring the partial information omitted in the above-mentioned step; and an information acquisition unit for acquiring the partial information omitted in the above-mentioned step, using the acquired partial information, which is composed of the entire information before the partial information is omitted. DCI The present invention is characterized by including a control unit that acquires the above-mentioned.

[0014] In order to achieve the above object, a base station device according to an embodiment of the present invention performs the above-mentioned steps. Downlink Control Information(DCI) The adjustment method is for transmitting to the terminal DCI determining specific information for converting a part of the entire information; and DCI After omitting the above part of the information, the terminal transmits the information based on the determined specific information. DCI The partial information is obtained from the specific information obtained during the process of receiving the transmission of the DCI The method is characterized in that it includes a step of enabling the user to obtain the above-mentioned.

[0015] In order to achieve the above object, a method for performing the above-described operations is provided in a terminal device according to an embodiment of the present invention. Downlink Control Information(DCI) The adjustment method is DCI When receiving, the above DCI The above information is obtained from the specific information acquired during the process of receiving the transmission. DCI and acquiring the partial information omitted in the step 10. and acquiring the partial information omitted in the step 10. DCI The method is characterized by comprising the steps of: Effect of the Invention

[0016] Therefore, the base station device and the terminal device of the present invention and the operations performed by each device DCI According to the adjustment method, DCI A new method that can transmit as much information as possible while minimizing the size of theDCI By implementing this transmission technology, it is possible to more stably transmit PDCCH resources by complementing them. DCI It is expected that the bit resources saved by minimizing the size of the EEPROM can be standardized and utilized for other purposes. [Brief description of the drawings]

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

[0018] It should be noted that the technical terms used in this specification are merely used to describe specific embodiments and are not intended to limit the idea of ​​the technology disclosed in this specification. In addition, unless otherwise specifically defined in this specification, the technical terms used in this specification should be interpreted as meanings generally understood by those having ordinary knowledge in the field to which the technology disclosed in this specification belongs, and should not be interpreted as meanings that are overly comprehensive or narrow. In addition, when the technical terms used in this specification are incorrect technical terms that do not accurately express the idea of ​​the technology disclosed in this specification, they should be understood instead as technical terms that can be correctly understood by those skilled in the art. In addition, general terms used in this specification should be interpreted according to the definitions in a dictionary or the context, and should not be interpreted as meanings that are overly narrow.

[0019] In addition, the singular expressions used in this specification include the plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprise" and "include" should not be interpreted as including all of the various components or steps described in the specification, but should be interpreted as not including some of the components or steps, or as including additional components or steps.

[0020] In addition, terms including ordinal numbers such as "first" and "second" used in this specification may be used to describe various components, but the components should not be limited by the terms. The terms are used only to distinguish one component from another. For example, the first component may be named the second component, and the second component may be named the first component, without departing from the scope of the present invention.

[0021] Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings. Regardless of the drawing numbers, the same or similar components will be given the same reference numbers, and duplicate descriptions thereof will be omitted.

[0022] In addition, when describing the technology disclosed in this specification, if a specific description of related publicly known technology is deemed to make the gist of the technology disclosed in this specification unclear, the detailed description will be omitted. In addition, it should be noted that the attached drawings are only intended to facilitate understanding of the concept of the technology disclosed in this specification, and the concept of the technology should not be construed as being limited by the attached drawings.

[0023] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0024] The present invention 、D CI (Downlink Control Information ) of This relates to a technology for adjusting the size and transmitting.

[0025] A PDCCH (Physical Downlink Control Channel) is a control channel and is used to transmit scheduling information for a PDSCH (Physical Downlink Shared Channel) and scheduling grants for a PUSCH (Physical Uplink Shared Channel).

[0026] The above-mentioned information transmitted using the PDCCH is generated and transmitted in accordance with a DCI (Downlink Control Information) format defined in the standard.

[0027] DCI defines a variety of formats depending on the application.

[0028] For example, Figure 1 shows DCI Format 1_0 used to convey PDSCH scheduling information in 5G.

[0029] As can be seen from FIG. 1, DCI Format 1_0 includes various information such as modulation and coding scheme (MCS) information and frequency / time position of PDSCH.

[0030] Since the PDCCH used for transmitting DCI is an important channel containing control information, stable transmission is very important.

[0031] Therefore, the DCI transmitted using the PDCCH needs to be designed to include as much information as possible with a minimum size, because the smaller the size of the DCI, the more it can be complemented and transmitted when transmitted on the PDCCH.

[0032] Even in the case of DCI Format 1_0 shown in FIG. 1, it can be seen that various scheduling information for PDSCH transmission is included in only a number of bits of 28+alpha (16 bits based on 273 RB).

[0033] To this end, there are various techniques for minimizing the size of DCI, such as a method in which the base station generates various profiles in advance and transmits them to the terminal through an RRC message, and transmits only the profile index in the DCI.

[0034] However, the above-mentioned existing techniques also have limitations in fully achieving the objective of minimizing the size of DCI and transmitting as much information as possible when there is a lot of information to be transmitted to the terminal through DCI, since the number of indexes that must be transmitted for each piece of information increases.

[0035] Therefore, the present invention proposes and realizes a new DCI transmission technology that overcomes the limitations of existing techniques and can minimize the size of DCI and transmit as much information as possible.

[0036] The new method proposed in this invention will be described below with reference to FIG. DCI The configurations of the base station device and the terminal device that realize the transmission technology will be specifically described.

[0037] Prior to detailed description, the present invention can be applied to both 4G (LTE) and 5G (NR), and may be extended to 6G in the future. However, in the following description, for convenience of explanation, features and various embodiments of the present invention will be described based on the NR standard.

[0038] First, with reference to FIG. 2, a specific configuration of a base station device 100 according to an embodiment of the present invention will be described.

[0039] As shown in FIG. 2, the base station device 100 according to the embodiment of the present invention may include a determination unit 110 and a control unit 120.

[0040] The base station device 100 according to an embodiment of the present invention may further include a sharing unit 130 and a notification unit 140.

[0041] In addition, in addition to the above-mentioned configuration, the base station device 100 according to one embodiment of the present invention may further include a configuration of a communication unit (not shown) responsible for communication with other base stations in the same type of communication network (5G) and / or other base stations in a different type of communication network (LTE), and communication functions with the terminal 10.

[0042] The entire configuration of the base station device 100 or at least a part of it may be implemented in the form of a hardware module or a software module, or may be implemented in the form of a combination of a hardware module and a software module.

[0043] Here, the software module can be understood as, for example, an instruction word executed by a processor that controls operations within the base station device 100, and such an instruction word can have a form in which it is stored in a memory within the base station device 100.

[0044] Ultimately, the base station device 100 according to the embodiment of the present invention realizes the new DCI transmission technique proposed in the present invention through the above-mentioned configuration.

[0045] Each component within base station device 100 of the present invention will now be described in more detail.

[0046] The determination unit 110 is responsible for determining specific information for converting a part of the entire information of Downlink Control Information (DCI) to be transmitted to the terminal 10 .

[0047] In this case, the specific information can be defined as a scheduling position of a Physical Downlink Control Channel (PDCCH) used for DCI transmission to the terminal 10, that is, position information of a resource scheduled for transmitting the corresponding PDCCH.

[0048] That is, the determination unit 110 can determine PDCCH position information (scheduling position) for converting a portion of information (bit value to be converted) of the entire information (bit stream) of DCI to be transmitted to the terminal 10.

[0049] Additionally, the determination unit 110 can determine a portion of information to be converted from the DCI to be transmitted to the terminal 10 according to the information position in the predefined DCI.

[0050] The controller 120 performs a function of omitting the part of information (bit values ​​to be converted) from the DCI to be transmitted, and then transmitting based on the determined specific information, that is, PDCCH position information (scheduling position).

[0051] More specifically, PDCCH resources for a terminal (UE) can be scheduled at various positions in the frequency axis.

[0052] As an example, according to the NR standard, the PDCCH can be scheduled at a multiple of 6 RBs. Therefore, assuming a BWP of 100 MHz and subcarrier-spacing of 30 kHz (i.e., 273 RBs), there are a maximum of 45 frequency resource positions at which the PDCCH can be scheduled.

[0053] Therefore, if it is possible to link specific bits in a DCI to the position information (scheduling position) of the PDCCH used to transmit the corresponding DCI, the base station can transmit DCI in which specific bits are omitted using a PDCCH whose position information is linked to the specific bits, and the terminal can obtain the specific bits of the received DCI from the PDCCH position information.

[0054] Therefore, according to the present invention, the finally acquired DCI from the viewpoint of the terminal 10 can be defined as the following Equation 1. [Formula 1] DCI = DCI bits received via PDCCH + bits obtained from PDCCH position information

[0055] That is, the present invention realizes a new DCI transmission technology, on the premise of a configuration in which specific bits in DCI are linked with position information of the PDCCH used to transmit the DCI.

[0056] In the following description, a specific description of the shared unit 130 will be given first.

[0057] The sharing unit 130 is associated with a configuration for associating a specific bit in the DCI with position information of the PDCCH used to transmit the corresponding DCI.

[0058] Such a sharing unit 130 is responsible for the function of sharing with the terminal 10 information that defines the conversion relationship between the information value (hereinafter, bit value) of a portion of the information to be converted in the DCI and the PDCCH position information (hereinafter, scheduling position).

[0059] To explain a specific embodiment, the above-defined information shared between the base station device 100 and the terminal 10 by the sharing unit 130 may have different forms according to the following two embodiments.

[0060] First, according to the first embodiment, the conversion relationship between the bit values ​​to be converted in DCI and the scheduling positions of the PDCCH can be defined in advance to be the same between the base station apparatus 100 and the terminal 10.

[0061] In this case, the above-mentioned "defined information" shared between the base station device 100 and the terminal 10 by the sharing unit 130 is the same pre-defined "conversion relationship between the bit value to be converted in the DCI and the scheduling position of the PDCCH."

[0062] For example, a conversion relationship between a bit value to be converted in DCI and a scheduling position of a PDCCH according to the following Equation 2 can be predefined. [Formula 2]

number

[0063] Therefore, assuming the above-mentioned NR standard in which the PDCCH can be scheduled at a position that is a multiple of 6 RBs, and assuming that the Number of Total RBs = 273 RBs and the PDCCH RB Scheduling step size = 6 RBs, as shown in Figure 3, when the Start RB Offset of the PDCCH is 0 RB as the scheduling position of the PDCCH, the bit value to be converted can be mapped to 00000, when the RB Offset is 6 RBs, 00001, when the RB Offset is 12 RBs, 00010, when the RB Offset is 18 RBs, 00011, ..., when the RB Offset is 192 RBs, 11111.

[0064] In the case of such a first embodiment, the determination unit 110 can determine the scheduling position of the PDCCH according to the information value of the above-mentioned part of the information, i.e., the bit value to be converted, using predefined information shared with the terminal 10, i.e., information predefined identically to the terminal 10 (e.g., Equation 2).

[0065] As described above, the base station apparatus 100 (determining section 110) can define in advance what bit values ​​in the DCI are to be converted by defining in advance the information positions in the DCI.

[0066] For example, the information position in the DCI regarding which bit value in the DCI is to be converted may be defined as 1) the last n bits, 2) the first n bits, or 3) from the xth bit.

[0067] Furthermore, the information position within such DCI may be defined identically between base station device 100 (decision unit 110) and terminal 10 in a manner selected and defined during the standardization process, or may be defined identically between base station device 100 (decision unit 110) and terminal 10 in a manner selected by base station device 100 (decision unit 110) and notified to terminal 10 via an RRC message.

[0068] Therefore, if the information position in the DCI to convert the last 5 bits of the DCI is defined in advance, in the case of the above-mentioned first embodiment, the determination unit 110 determines the last 5 bits of the DCI to be transmitted to the terminal 10 as the conversion target, and can determine the scheduling position of the PDCCH according to the bit value of these 5 bits. For example, when the bit value of the last 5 bits of the DCI is 00001, the determination unit 110 can determine that the scheduling position of the PDCCH is PDCCH Start RB Offset=6RB.

[0069] Next, in a second embodiment, the base station apparatus 100 can transmit and inform the terminal 10 of bit value information for each PDCCH start RB offset through an RRC message.

[0070] In this case, the above-mentioned “defined information” shared between the base station apparatus 100 and the terminal 10 by the sharing unit 130 refers to “bit value information for each PDCCH start RB offset” transmitted to the terminal 10.

[0071] For example, in the present invention, a new IE for transmitting "bit value information for each PDCCH start RB offset" can be defined in the pdcch-Configuration Common in the RRC Reconfiguration message.

[0072] The new IE thus defined can be referred to as locationToDciConversionInfo IE.

[0073] In this case, the sharing unit 130 can share in a manner of transmitting "bit value information for each PDCCH start RB offset" to the terminal 10 using a new IE, ie, locationToDciConversionInfo IE, defined in the pdcch-Configuration Common in the RRC Reconfiguration message.

[0074] More specifically, referring to FIG. 4, the frequencyDomainResources IE is an IE predefined in the 3GPP 5G standard and may indicate a Frequency Domain Configuration of a Control Resource Set (CORESET).

[0075] Each bit of the frequencyDomainResources IE corresponds to 6RBs, and 1 means that it corresponds to the CORESET and 0 means that it does not correspond. And, the PDCCH can be allocated only to the area allocated as the CORESET.

[0076] As shown in Fig. 4, a new IE proposed in the present invention, i.e., locationToDciConversionInfo IE, can be used to transmit bit value (mapping) information for each Start RB Offset of PDCCH. Here, each line separated by "," in locationToDciConversionInfo IE is mapped to an RB location defined as "1" in frequencyDomainResources.

[0077] 4, the first bit value (00000) of locationToDciConversionInfo corresponds to RB Offset=0, and the second bit value (001011) corresponds to the RB Offset=18 RB position, which corresponds to the second “1” in frequencyDomainResources. In the case of RB Offset 6 and 12, since frequencyDomainResources is “0”, PDCCH resources cannot be allocated, and mapping information is not defined in locationToDciConversionInfo and is omitted.

[0078] That is, as shown in FIG. 4, the sharing unit 130 can transmit and share to the terminal 10 by including bit value (mapping) information for each Start RB Offset of the PDCCH in the locationToDciConversionInfo IE newly defined in the pdcch-Configuration Common in the RRC Reconfiguration message.

[0079] In the case of such a second embodiment, the determination unit 110 can determine the scheduling position of the PDCCH according to the information value of the above-mentioned part of the information, i.e., the bit value to be converted, using predefined information shared with the terminal 10, i.e., information transmitted to the terminal 10 through a newly defined locationToDciConversionInfo IE (e.g., see FIG. 4).

[0080] In this case, the base station device 100 (determination unit 110) can define which bit values ​​in the DCI are to be converted by predefining the information position in the DCI in a manner such as by selecting and defining in the standardization process or by notifying the terminal 10 through an RRC message (see 1) to 3) above).

[0081] Therefore, if the information position in the DCI for converting the last n bits of the DCI is defined in advance, in the case of the above-mentioned second embodiment, the determination unit 110 determines the last n bits of the DCI to be transmitted to the terminal 10 as the conversion target, and can determine the scheduling position of the PDCCH according to the bit value of the last n bits. For example, when the bit stream of the last n bits is 0001011, the determination unit 110 can determine that the scheduling position of the PDCCH is PDCCH Start RB Offset=18RB.

[0082] Then, when part of the information in the DCI to be transmitted, i.e., the scheduling position of the PDCCH for converting the bit value to be converted (e.g., Start RB Offset of the PDCCH) is determined by the determination unit 110 as described above, the control unit 120 omits the bit value to be converted from the DCI to be transmitted, and then transmits it using the PDCCH at the determined scheduling position.

[0083] Therefore, the terminal 10 of the present invention can obtain the omitted specific bits (= bit value to be converted) of the received DCI from the PDCCH position information, i.e., the scheduling position, which is grasped in the process of receiving DCI transmission via the PDCCH, and can obtain the DCI consisting of the entire information using this as shown in the above-mentioned Equation 1.

[0084] Next, the configuration of the terminal device 10 according to an embodiment of the present invention will be specifically described with reference to FIG.

[0085] As shown in FIG. 2, a terminal device 10 according to an embodiment of the present invention may include an information acquisition unit 11 and a control unit 12.

[0086] The terminal device 10 according to an embodiment of the present invention may further include a sharing unit 13.

[0087] The entire configuration of the terminal device 10 or at least a part of it may be implemented in the form of a hardware module or a software module, or may be implemented in the form of a combination of a hardware module and a software module.

[0088] Here, a software module can be understood as, for example, instructions executed by a processor that controls operations within the terminal device 10, and such instructions can be in the form of being stored in a memory within the terminal device 10.

[0089] Ultimately, the terminal device 10 according to the embodiment of the present invention realizes the new DCI transmission technology proposed in the present invention through the above-mentioned configuration.

[0090] Each component within the terminal device 10 of the present invention will now be described in more detail.

[0091] The information acquisition unit 11 is responsible for acquiring, when receiving Downlink Control Information (DCI), some information omitted in the DCI from specific information grasped in the process of receiving the DCI.

[0092] In this case, the specific information can be defined as a scheduling position of a Physical Downlink Control Channel (PDCCH) used to transmit DCI, that is, position information of a resource scheduled to transmit the corresponding PDCCH.

[0093] That is, when receiving DCI, the information acquisition unit 11 can acquire some information (bit values ​​to be converted) omitted in the received DCI from position information (scheduling position) of the PDCCH used to transmit the corresponding DCI.

[0094] The control unit 12 is responsible for the function of acquiring DCI consisting of all information before the partial information (bit values ​​to be converted) is omitted, using the partial information acquired by the information acquisition unit 11 (bit values ​​to be converted).

[0095] As described above, the present invention realizes a new DCI transmission technology based on a configuration in which specific bits (bit values ​​to be converted) in DCI are linked to position information of the PDCCH used to transmit the DCI.

[0096] In the following description, a specific description of the shared portion 13 will be given first.

[0097] The sharing unit 13 is related to a configuration for associating a specific bit (a bit value to be converted) in the DCI with position information of the PDCCH used to transmit the DCI.

[0098] Such sharing unit 13 is responsible for the function of sharing with base station 100 information that defines the conversion relationship between the information value (hereinafter, bit value) of some of the information to be converted in DCI and the position information of the PDCCH (hereinafter, scheduling position).

[0099] Specifically, according to the first embodiment of the base station device 100 described above, the above-mentioned "defined information" shared between the base station 100 and the terminal device 10 by the sharing unit 13 may be the same pre-defined "conversion relationship between the bit value to be converted in the DCI and the scheduling position of the PDCCH."

[0100] In the case of this first embodiment, the information acquisition unit 11 can acquire a bit value confirmed to be due to the scheduling position of the PDCCH used in transmitting this DCI as an information value of some information omitted in this DCI, i.e., a bit value to be converted, using predefined information shared with the base station 100, i.e., information predefined the same as the base station 100 (e.g., Equation 2).

[0101] In this case, in the present invention, as described above, it is possible to define which bit values ​​in the DCI are to be converted by predefining the information position in the DCI in a manner such as by selecting and defining in the standardization process or by the base station 100 informing the terminal 10 through an RRC message (see 1) to 3) above).

[0102] Therefore, if the information position within the DCI to be converted for the last 5 bits of the DCI is predefined, in the case of the above-mentioned first embodiment, when the scheduling position of the PDCCH used in transmitting this DCI is, for example, PDCCH Start RB Offset = 6RB, the information acquisition unit 11 can acquire 00001 as the bit value to be converted corresponding to the last 5 bits of the omitted DCI.

[0103] Next, according to a second embodiment of the above-mentioned base station device 100, the above-mentioned “defined information” shared between the base station 100 and the terminal device 10 by the sharing unit 13 may be “bit value information for each PDCCH start RB offset” transmitted by the base station 100 through an RRC message.

[0104] In this second embodiment, the information acquisition unit 11 can acquire a bit value confirmed to be due to the scheduling position of the PDCCH used to transmit this DCI as the information value of some of the information omitted in this DCI, i.e., the bit value to be converted, using pre-defined information shared with the base station 100, i.e., information transmitted from the base station 100 through a newly defined locationToDciConversionInfo IE (e.g., see FIG. 4).

[0105] Even in this case, in the present invention, it is possible to define which bit values ​​in the DCI are to be converted by predefining the information position in the DCI in a manner such as by selecting and defining in the standardization process or by having the base station 100 inform the terminal 10 through an RRC message (see 1) to 3) above).

[0106] Therefore, if the information position in the DCI to be converted for the last n bits of the DCI is defined in advance, in the case of the above-mentioned second embodiment, when the scheduling position of the PDCCH used in transmitting this DCI is, for example, PDCCH Start RB Offset = 18RB, the information acquisition unit 11 can acquire 0001011 as the bit value to be converted corresponding to the last n bits of the omitted DCI.

[0107] As described above, according to the present invention, a new DCI transmission technology is realized that can transmit as much information as possible while minimizing the size of DCI by converting a portion of DCI information (bit values ​​to be converted) into PDCCH position information (scheduling position) and transmitting it.

[0108] Furthermore, in the above embodiment of the present invention, the scheduling position in the frequency domain is described as the PDCCH position information, but this is merely one embodiment.

[0109] In other words, according to the present invention, the method / technique for converting part of the information in DCI, i.e., the bit value to be converted, into PDCCH position information and transmitting it can utilize a scheduling position extended not only to the frequency domain but also to the time domain as the PDCCH position information. For example, when the PDCCH is transmitted using one or more symbols, it may be possible to convert part of the DCI information (the bit value to be converted) into the frequency / time domain scheduling position of the PDCCH and transmit it.

[0110] Meanwhile, there may be situations in which it is not efficient or possible to apply the method / technique of converting and transmitting some information in DCI, i.e., bit values ​​to be converted, into PDCCH position information according to the present invention.

[0111] For example, such a situation may occur when there are two or more UEs with the same DCI information that needs to be converted into PDCCH location information within the same slot, or when a DCI bit stream that cannot be converted through PDCCH location information needs to be transmitted (e.g., 11101 needs to be converted into location information and transmitted, but the PDCCH location information for the corresponding bit stream is not defined).

[0112] Therefore, the present invention further proposes a technology that enables a terminal (UE) to recognize whether the transmitted DCI has been transmitted by converting some information in the DCI into PDCCH position information.

[0113] For this purpose, the base station device 100 of the present invention can further include the configuration of a notification unit 140.

[0114] The notification unit 140 performs the function of either pre-transmitting information to the terminal 10 that sets whether or not some information in the DCI is converted in units of PDCCH position information (hereinafter, referred to as the scheduling position), or transmitting to the terminal 10 whether or not some information in the DCI is converted in units of DCI, thereby enabling the terminal 10 to selectively perform an operation of acquiring DCI consisting of all information before some information in the DCI is omitted from the scheduling position of the PDCCH.

[0115] To explain one embodiment, the notification unit 140 can notify the terminal 10 in advance of information that sets whether or not some information in the DCI is to be converted in units of scheduling positions of the PDCCH, and the present invention can define a new IE for this purpose.

[0116] More specifically, as shown in FIG. 5, in the present invention, a new IE, namely, frequencyLocationToDciInfo IE, can be defined for the purpose of transmitting information that sets whether or not some information in DCI is converted in units of PDCCH scheduling positions.

[0117] Here, each bit of the frequencyLocationToDciInfo IE corresponds to a CORESET of the frequencyDomainResources IE and indicates whether the location (information) of the corresponding PDCCH is related to the conversion of some information in the DCI (correlation). "1" indicates that there is a correlation, and "0" indicates that there is no correlation.

[0118] That is, as shown in FIG. 5, the notification unit 140 can transmit to the terminal 10, the frequencyLocationToDciInfo IE newly defined in the pdcch-Configuration Common in the RRC Reconfiguration message, including information ("1" or "0") indicating whether the position (information) of each PDCCH is related to the conversion of some information in the DCI.

[0119] In this case, in the terminal device 10 of the present invention, when the scheduling position of the PDCCH used to transmit the DCI is a position that has been preset as a conversion target for some information in the DCI, the information acquisition unit 11 can acquire some information omitted in the DCI from the scheduling position of the PDCCH used to transmit the DCI.

[0120] That is, when the scheduling position of the PDCCH used to transmit this DCI is a position that has been preset as a conversion target for some information in the DCI, in other words, when the position corresponds to "1" in the information confirmed from the frequencyLocationToDciInfo IE of the RRC message, the information acquisition unit 11 can acquire the bit value of the conversion target that has been omitted in this DCI from the scheduling position of the PDCCH.

[0121] On the other hand, if the scheduling position of the PDCCH used to transmit this DCI is a position corresponding to "0" in the information confirmed from the frequencyLocationToDciInfo IE of the RRC message, the information acquisition unit 11 does not attempt to acquire the bit value to be converted.

[0122] Furthermore, when the above-mentioned frequencyLocationToDciInfo IE is newly defined and used in the present invention, the locationToDciConversionInfo IE described with reference to Figure 4 above can be linked with the frequencyLocationToDciInfo described with reference to Figure 5 instead of frequencyDomainResources.

[0123] That is, as shown in FIG. 6, in the present invention, frequencyLocationToDciInfo IE and locationToDciConversionInfo IE are defined as new IEs, and an embodiment in which frequencyLocationToDciInfo and locationToDciConversionInfo are used together can be implemented.

[0124] The above-described embodiment of the method has an advantage that it is not necessary to modify the format of the DCI defined in the standard, but has a limit on the number of adjustable DCI bits because it is necessary to allocate PDCCH resource positions that are not related to the conversion of some information in the DCI.

[0125] Meanwhile, in another embodiment, the notifier 140 can notify the terminal 10 of whether or not some information in the DCI has been converted in units of DCI in the following two ways.

[0126] First, the first method is a method in which a specific field indicating whether or not some information of the corresponding DCI has been converted is added to the DCI.

[0127] In this case, when the notification unit 140 converts some information in the DCI (bit values ​​to be converted) into PDCCH position information (scheduling position), information indicating this is included in a specific field in the corresponding DCI and transmitted.

[0128] Table 1 below shows an example in which the above-mentioned specific field "PDCCH location to DCI info conversion indicator" is added to DCI Format 1_0. [Table 1]

[0129] In this case, in the terminal device 10 of the present invention, when the DCI includes a specific field indicating that some information in the DCI is converted, the information acquisition unit 11 can acquire some information omitted in the DCI from the scheduling position of the PDCCH used to transmit the DCI.

[0130] That is, when information (e.g., 1) indicating that some information in the DCI is converted is confirmed from a specific field in the current DCI, the information acquisition unit 11 can acquire the bit value to be converted that was omitted in the current DCI from the scheduling position of the PDCCH.

[0131] On the other hand, if the information acquiring unit 11 confirms information (e.g., 0) indicating that some information in the DCI is not converted from a specific field in the current DCI, it does not attempt to acquire the bit value to be converted.

[0132] This method has a drawback in that the number of DCI bits increases by 1 bit, but since the number of DCI bits that can be saved through this is larger, it is possible to ultimately minimize the DCI size.

[0133] The second method is to define and use a new dedicated DCI format that is used when part of the information in the DCI is converted.

[0134] In this case, when notifying unit 140 converts a portion of information (bit values ​​to be converted) in the DCI into PDCCH position information (scheduling position), the dedicated DCI format is used.

[0135] In this case, in the terminal device 10 of the present invention, when the DCI has a dedicated DCI format, the information acquisition unit 11 can acquire some information omitted in the DCI from the scheduling position of the PDCCH used to transmit the DCI.

[0136] That is, if the current DCI has a dedicated DCI format, the information acquisition unit 11 can acquire the bit values ​​to be converted that are omitted in the current DCI from the scheduling position of the PDCCH.

[0137] On the other hand, if the current DCI does not have a dedicated DCI format, the information acquisition unit 11 does not attempt to acquire the bit value to be converted.

[0138] As described above, according to various embodiments of the present invention, a new DCI transmission technology is realized that can transmit as much information as possible while minimizing the size of DCI by converting and transmitting a portion of DCI information (bit values ​​to be converted) into PDCCH position information (scheduling position).

[0139] As a result, according to the present invention, it is possible to transmit as much information as possible while minimizing the size of DCI, which is expected to have the effect of more complementing PDCCH resources for stable transmission, and further, the bit resources saved by minimizing the size of DCI can be standardized and utilized for other purposes.

[0140] 7 and 8, a method for manufacturing a semiconductor device according to an embodiment of the present invention will be described below. DCI The adjustment method will be described.

[0141] First, referring to FIG. 7, a method for manufacturing a semiconductor device according to an embodiment of the present invention will be described. DCI The adjustment method is described from the perspective of the base station.

[0142] In a DCI adjustment method according to one embodiment of the present invention, a base station device 100 shares with a terminal 10 information that defines a conversion relationship between an information value (hereinafter, bit value) of a portion of information to be converted in a DCI and position information of a PDCCH (hereinafter, scheduling position) (S100).

[0143] The sharing method can be a method of predefining the same conversion relationship between the bit value to be converted in the DCI and the scheduling position of the PDCCH (the above-mentioned first embodiment), or a method of transmitting and notifying the terminal 10 of bit value information for each PDCCH start RB offset via an RRC message (the above-mentioned second embodiment).

[0144] In a DCI adjustment method according to one embodiment of the present invention, when a base station device 100 generates a DCI (Bit stream) to be transmitted to a terminal 10 (S110), the base station device 100 can check whether some information in the DCI can be converted into location information (S120).

[0145] For example, if the base station device 100 determines that it is inefficient or impossible to apply a method / technique for converting some information in the current DCI into PDCCH position information and transmitting it, it can confirm that conversion is not possible (S120 No).

[0146] If it is determined that conversion is not possible (No in S120), the base station apparatus 100 schedules a PDCCH to be used for transmitting the current DCI in a conventional manner, and then transmits the current DCI on the PDCCH.

[0147] Meanwhile, in a DCI adjustment method according to one embodiment of the present invention, if the base station device 100 confirms that conversion is possible (S120 Yes), it can determine the scheduling position of the PDCCH according to some information (bit value to be converted) of the entire information (bit stream) of this DCI using the information shared with the terminal 10 through step S100 (S130).

[0148] In addition, in a DCI adjustment method according to one embodiment of the present invention, the base station device 100 can omit some information (bit values ​​to be converted) from the current DCI to be transmitted, and then transmit it on the PDCCH at the scheduling position determined in step S130 (S140).

[0149] In a DCI adjustment method according to one embodiment of the present invention, the base station device 100 can perform step S110 and subsequent steps to perform the operation of the present invention every time DCI is transmitted to the terminal 10, unless the terminal 10 is turned off or is disconnected due to movement, etc. (S160 No).

[0150] Therefore, the terminal 10 of the present invention can obtain the omitted specific bits (= bit value to be converted) of the received DCI from the PDCCH position information, i.e., the scheduling position, which is grasped in the process of receiving the DCI transmission via the PDCCH, and can obtain the DCI consisting of the entire information using this as shown in the above-mentioned Equation 1.

[0151] Next, referring to FIG. 8, a method according to an embodiment of the present invention will be described. DCI The adjustment method will be explained from the perspective of the terminal.

[0152] According to one embodiment of the present invention DCI In the adjustment method, the terminal device 10 shares with the base station 100 information that defines the conversion relationship between the information value (hereinafter, bit value) of some information to be converted in the DCI and the position information of the PDCCH (hereinafter, scheduling position) (S10).

[0153] The sharing method can be a method of predefining the same conversion relationship between the bit value to be converted in the DCI and the scheduling position of the PDCCH (the above-mentioned first embodiment), or a method of receiving bit value information for each PDCCH start RB offset from base station 100 via an RRC message (the above-mentioned second embodiment).

[0154] In a DCI adjustment method according to one embodiment of the present invention, a terminal device 10 receives DCI transmitted via a PDCCH assigned to itself (S11), and at this time, can check whether location information conversion of some information has been applied in this DCI (S12).

[0155] For example, the terminal device 10 can check from the frequencyLocationToDciInfo IE newly defined in the present invention whether the position (information) of each PDCCH is related to the conversion of some information in the DCI (e.g., "1" or "0"), or can check by looking at related information in a specific field of the current DCI, or can check whether the current DCI is in a dedicated DCI format.

[0156] If the terminal device 10 determines that no conversion has been applied (S12 No), it decodes the PDCCH in a conventional manner and obtains the DCI bits received via the PDCCH as the final DCI (S15).

[0157] Meanwhile, in a DCI adjustment method according to one embodiment of the present invention, if the terminal device 10 confirms that the conversion has been applied (S12 Yes), it can acquire a specific bit value (= bit value to be converted) according to the scheduling position of the PDCCH used to transmit the corresponding DCI, i.e., some information omitted in the received DCI, using the information shared with the base station 100 through step S10 (S13).

[0158] In addition, in a DCI control method according to one embodiment of the present invention, the terminal device 10 can obtain a final DCI consisting of the entire bit stream as shown in the above-mentioned Equation 1 using the DCI bits obtained by decoding the PDCCH and the bit value (= bit value to be converted) obtained in step S13 (S14).

[0159] In a DCI adjustment method according to one embodiment of the present invention, the terminal device 10 can perform the operation of the present invention every time it receives DCI by performing step S10 and subsequent steps unless the connection with the base station 100 is released due to reasons such as power off, movement, etc. (S16 No).

[0160] As described above, according to various embodiments of the present invention, a new DCI transmission technology is realized that can transmit as much information as possible while minimizing the size of DCI by converting and transmitting a portion of DCI information (bit values ​​to be converted) into PDCCH position information (scheduling position).

[0161] As a result, according to the present invention, it is possible to transmit as much information as possible while minimizing the size of DCI, which is expected to have the effect of more complementing PDCCH resources for stable transmission, and further, the bit resources saved by minimizing the size of DCI can be standardized and utilized for other purposes.

[0162] However, implementations of the functional operations and subject matter described herein may be embodied in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed herein and structural equivalents thereof, or in a combination of one or more of these. Implementations of the subject matter described herein may be embodied as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a tangible program storage medium for control of the operation of or execution by a processing system.

[0163] The computer readable medium may be a machine readable storage device, a machine readable storage substrate, a memory device, a composition of matter affecting a machine readable radio wave type signal, or a combination of one or more of these.

[0164] As used herein, the terms "system" and "device" encompass any mechanism, device, or machine for processing data, including, for example, a programmable processor, computer, or multiple processors or computers. A processing system may include, in addition to hardware, code that forms an execution environment for computer programs when requested, such as code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of these.

[0165] A computer program (also known as a program, software, software application, script or code) may be written in any form of programming language, including compiled or interpreted languages, a priori or procedural languages, and may be deployed in any form, including stand-alone programs, modules, components, subroutines or other units suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program may be stored in a single file provided to a requested program, or in multiple interacting files (e.g., a file storing one or more modules, subprograms or portions of code), or as part of a file containing other programs or data (e.g., one or more scripts stored in a markup language document). A computer program may be deployed to be executed on multiple computers or on a single computer, located at one site or distributed across multiple sites and interconnected by a communications network.

[0166] Meanwhile, computer readable media suitable for storing computer program instructions and data may include all forms of non-volatile memory, media and memory devices, including, for example, semiconductor memory devices such as EPROM, EEPROM and flash memory devices, magnetic disks such as internal hard disks and external disks, magneto-optical disks, and CD-ROM and DVD-ROM disks. The processor and memory may be supplemented by or integrated with special purpose logic circuitry.

[0167] Implementations of the subject matter described herein may also be implemented in a computing system that includes a back-end component, such as a data server, or includes a middleware component, such as an application server, or includes a front-end component, such as a client computer having a web browser or a graphical user interface through which a user can interact with an implementation of the subject matter described herein, or any combination of one or more of such back-end, middleware, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication, such as a communications network.

[0168] Although the present specification contains details of numerous specific embodiments, these should not be construed as limitations on the scope of any invention or claimable subject matter, but rather as descriptions of the particular features of particular embodiments of particular inventions. Similarly, certain features that are described in the specification in the context of a separate embodiment may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments individually or in any suitable subcombination. Furthermore, although features may operate in a particular combination, one or more features may be excluded from that combination in some cases, and the claimed combinations may be modified into subcombinations or variations of the subcombinations.

[0169] Additionally, although the present specification depicts acts in figures in a particular sequence, this should not be construed as implying that such acts must be performed in the particular sequence or order depicted in order to achieve desirable results, or that all depicted acts must be performed. In certain cases, multitasking and parallel processing may be advantageous. Additionally, the separation of various system components in the above-described embodiments should not be construed as requiring such separation in all embodiments, and it should be understood that the program components and systems described may generally be integrated together in a single software product or packaged into multiple software products.

[0170] Thus, this specification is not intended to limit the present invention to the specific terms presented therein. Therefore, although the present invention has been described in detail with reference to the above examples, those skilled in the art can make modifications, changes and variations to the examples without departing from the scope of the present invention. The scope of the present invention is defined by the claims below rather than the above detailed description, and all modifications or variations derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims

1. A determination unit that converts a part of all information to be transmitted to a terminal using a physical downlink control channel (PDCCH) into a scheduling position of the PDCCH and determines the scheduling position; and a control unit that omits some of the information from the information and then transmits it based on the determined scheduling position, and acquires the information consisting of the entire information by acquiring the some of the information from the scheduling position that is identified in the process of the terminal receiving the information.

2. The above information is 2. The base station apparatus according to claim 1, wherein the information is Downlink Control Information (DCI).

3. The information sharing unit further includes information defining a conversion relationship between an information value of a part of information to be converted in the information and the scheduling position, the information sharing unit sharing the information with the terminal; The determination unit is The base station device according to claim 1, characterized in that the scheduling position is determined according to an information value of a part of information to be converted among all information constituting the information, using the defined information.

4. The control unit is The base station apparatus according to claim 3, characterized in that the part of the information is omitted from the information, and then transmitted using a PDCCH at the determined scheduling position.

5. The above shared areas are: The base station device according to claim 3, wherein the defined information is shared by transmitting the defined information to the terminal using a new IE defined in a pdcch-Configuration Common in an RRC Reconfiguration message.

6. Transmitting information in advance to the terminal in which conversion or non-conversion of a portion of the information is set in the scheduling position unit, or transmitting conversion or non-conversion of a portion of the information in the information unit to the terminal, The base station device of claim 1, further comprising a notification unit that enables the terminal to selectively perform an operation of acquiring the information consisting of all information before the part of the information is omitted from the scheduling position.

7. The determination unit is 2. The base station device according to claim 1, further comprising: determining the part of information to be converted from the information to be transmitted to the terminal according to a predefined information position within the information.

8. An information acquisition unit that, when receiving information to be transmitted using a PDCCH (Physical Downlink Control Channel), acquires some information omitted from the information from a scheduling position of the PDCCH grasped in the process of receiving the information; and A control unit that uses the acquired partial information to acquire the information configured from the entire information before the partial information is omitted.

9. The above information is The terminal device according to claim 8, characterized in that the information is Downlink Control Information (DCI).

10. The method further includes a sharing unit that shares with a base station information defining a conversion relationship between an information value of a part of information to be converted in the information and the scheduling position; The information acquisition unit is The terminal device as described in claim 8, characterized in that, using the defined information, an information value confirmed to be due to the scheduling position used in transmitting the information is obtained as an information value of the omitted part of the information.

11. The information acquisition unit is If the scheduling position used for transmitting the information is a position that is preset as a conversion target for some information in the information, if the information includes a specific field indicating that some information in the information is converted, or if the information has a dedicated information format used when some information in the information is converted, The terminal device according to claim 8, further comprising: acquiring a portion of the information omitted from the information from the scheduling position used for transmitting the information.

12. In the information adjustment method performed by a base station device, converting a part of all information to be transmitted to the UE using a physical downlink control channel (PDCCH) into a scheduling position of the PDCCH and determining the scheduling position; and a step of omitting the part of the information from the information and then transmitting the information based on the determined scheduling position, and acquiring the part of the information from the scheduling position identified in the process of receiving the information, thereby enabling the terminal to acquire the information composed of the entire information.

13. In the information adjustment method performed in a terminal device, When receiving information to be transmitted using a physical downlink control channel (PDCCH), acquiring some information omitted from the information from a scheduling position of the PDCCH that is identified in the process of receiving the information; and obtaining the information consisting of all information before the partial information is omitted, using the obtained partial information.

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