Communication device and communication method

Abstract

A communication device according to the present invention comprises: a control unit that generates a codeword in which information bits are encoded using an extended Polar code, to which addition of exclusive OR (XOR) operations and stopping of polarization by deletion of the XOR operations are applied; and a transmission unit that transmits the codeword to another communication device.

Description

Communication device and communication method

[0001] The present invention relates to a communication device and a communication method in a wireless communication system.

[0002] 3GPP (registered trademark) (3rd Generation Partnership Project) is currently studying a wireless communication system called 5G or NR (New Radio) (hereinafter, the wireless communication system will be referred to as "5G" or "NR") in order to achieve a larger system capacity, a higher data transmission speed, and a lower latency in wireless sections. Various wireless technologies are being studied for 5G to meet the requirements of achieving a throughput of 10 Gbps or more while keeping latency in wireless sections to 1 ms or less.

[0003] In NR, a network architecture including 5GC (5G Core Network) corresponding to EPC (Evolved Packet Core), which is the core network in the network architecture of LTE (Long Term Evolution), and NG-RAN (Next Generation - Radio Access Network) corresponding to E-UTRAN (Evolved Universal Terrestrial Radio Access Network), which is the RAN (Radio Access Network) in the network architecture of LTE, is being considered (for example, Non-Patent Document 1 and Non-Patent Document 2).

[0004] Furthermore, requirements for realizing 6G include ultra-high speed, large capacity communication, ultra-extended coverage, ultra-low power consumption, low cost, ultra-low latency, ultra-reliable notification, and ultra-multiple connections and sensing. Polar coding is one of the key elemental technologies being considered to meet the above requirements, and is a candidate for error correcting code.

[0005] 3GPP TS 23.501 V17.11.0 (2023-12)3GPP TS 38.401 V17.7.0 (2024-01) E. Arikan, "A Short Course on Polar Coding Theory and Applications"3GPP TS 38.212 V17.7.0 (2024-01)

[0006] In NR, polar coding is adopted (see Non-Patent Document 3 and Non-Patent Document 4). Polar coding, which is a candidate for error correction code under consideration for realizing 6G, has had difficulty in improving performance, particularly when the codeword length is short.

[0007] The present invention has been made in view of the above points, and has as its object to improve the performance of polar coding in wireless communication systems.

[0008] According to the disclosed technology, a control unit is provided that generates a code word that encodes information bits using an extended polar code that applies an XOR (Exclusive OR) operation to add an XOR operation and stops polarization by deleting the XOR operation, and a transmitting unit that transmits the code word to another communication device.

[0009] According to the disclosed technology, it is possible to improve the performance of polar coding in a wireless communication system.

[0010] FIG. 1 is a diagram for explaining an example of a communication system. FIG. 2 is a diagram for explaining an example of communication channel polarization. FIG. 3 is a diagram for explaining polar coding. FIG. 4 is a first diagram for explaining convolutional polar coding. FIG. 5 is a second diagram for explaining convolutional polar coding. FIG. 6 is a first diagram for explaining relaxed polar coding. FIG. 7 is a second diagram for explaining relaxed polar coding. FIG. 8 is a diagram for explaining an example of the functional configuration of a base station 10 in an embodiment of the present invention. FIG. 9 is a diagram for explaining an example of the functional configuration of a terminal 20 in an embodiment of the present invention. FIG. 10 is a diagram for explaining an example of the hardware configuration of a base station 10 or a terminal 20 in an embodiment of the present invention. FIG. 11 is a diagram for explaining an example of the configuration of a vehicle 2001 in an embodiment of the present invention.

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0012] In the operation of the wireless communication system according to the embodiment of the present invention, existing technology is used as appropriate. However, the existing technology is, for example, the existing LTE, but is not limited to the existing LTE. Furthermore, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and systems subsequent to LTE-Advanced (e.g., NR), unless otherwise specified.

[0013] In addition, in the embodiments of the present invention described below, terms such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel) used in existing LTE are used. This is for convenience of description, and similar signals, functions, etc. may be called by other names. In addition, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even if a signal is used in NR, it is not necessarily stated as "NR-".

[0014] Furthermore, in the embodiment of the present invention, the duplex method may be a time division duplex (TDD) method, a frequency division duplex (FDD) method, or another method (for example, flexible duplex, etc.).

[0015] Furthermore, in the embodiments of the present invention, "configuring" radio parameters etc. may mean that predetermined values ​​are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are set.

[0016] Fig. 1 is a diagram showing an example of the configuration of a wireless communication system according to an embodiment of the present invention. As shown in Fig. 1, the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0017] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in the time domain and the frequency domain. The time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is, for example, transmitted via NR-PBCH and is also referred to as broadcast information. The synchronization signal and system information may also be referred to as SSB (SS / PBCH block). As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Furthermore, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).

[0018] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or an M2M (Machine-to-Machine) communication module. As shown in Fig. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10 and measures propagation path quality based on the reception results of the reference signals.

[0019] Furthermore, various requirements are being considered for the next generation, 6G, such as ultra broadband communication, mission critical communication, ultra massive connection, universal coverage, intelligent connection, ubiquitous sensing, and the like.

[0020] Furthermore, the requirements may be ultra-high speed communication, large capacity communication, ultra-extended coverage, ultra-low power consumption, low cost, ultra-low latency, ultra-reliable communication, ultra-multiple connections and sensing, etc.

[0021] To achieve these requirements, new concepts include extensibility (e.g., making it more future-proof), easy-operational, customizable (e.g., making it easier to operate), and sustainability (e.g., reducing costs, having a more robust configuration, and being resilient). Also, guaranteed communication, which always guarantees a minimum level of performance, is being considered.

[0022] Furthermore, requirements for realizing 6G include ultra-high speed, large capacity communication, ultra-extended coverage, ultra-low power consumption, low cost, ultra-low latency, ultra-reliable notification, and ultra-multiple connections and sensing. Polar coding (also called polar code) is a candidate for error correcting codes, which are one of the important elemental technologies being considered to meet the above requirements.

[0023] Polar coding uses channel polarization to achieve error rate characteristics that approach the Shannon limit, and has been adopted as the error correction code for the control channel in 5G NR. It is also being considered as a promising candidate for error correction coding for 6G.

[0024] Fig. 2 is a diagram for explaining an example of channel polarization. As shown in Fig. 2, channel polarization is a process of combining and splitting uniform original channels into polarized new channels.

[0025] There are two variants of polar coding: convolutional polar coding and relaxed polar coding. Convolutional polar coding is a method that promotes channel polarization without changing the codeword length by introducing a convolutional structure (adding an XOR operation). On the other hand, relaxed polar coding is a method that prevents the occurrence of unnecessary poor channel conditions while reducing the amount of computation by stopping unnecessary channel polarization (removing the XOR operation).

[0026] Fig. 3 is a diagram for explaining polar coding. As shown in Fig. 3, in polar coding, channel polarization by XOR operation increases as the codeword length increases, and this increases polarization between poor and good channels, which can improve performance in terms of the error rate for information bits. However, when the codeword length is short, the polarization decreases, limiting the improvement in performance.

[0027] 4 and 5 are first and second diagrams illustrating convolutional polar coding, respectively. As shown in Fig. 4 and Fig. 5, convolutional polar coding can enhance polarization compared to conventional polar coding by adding an XOR operation to the encoder.

[0028] 6 and 7 are first and second diagrams, respectively, illustrating convolutional polar coding. As shown in FIGS. 6 and 7, in relaxed polar coding, once a communication channel meets a certain quality, polarization is stopped by removing the XOR operation from the encoder. In other words, if the quality is excessive, there is no need to create a poor communication channel, and the current quality is maintained by not performing polarization.

[0029] (Example) An example will be described. In this example, a method for improving performance at short codeword lengths by combining convolutional polar codes and relaxed polar codes will be described. Also, in this example, a method for extended polar coding (extended polar coding) will be described, which has a function for promoting channel polarization by adding XOR operations and a function for stopping channel polarization by removing XOR operations in a wireless communication system. Furthermore, the polar coding method, encoder, and settings related to the encoding described in this example will be similarly applied to a method for decoding encoded codewords, a decoder, and settings related to the decoding.

[0030] (First Example) In the first example, a code generation method will be described in which, in polar coding, channel polarization is promoted by adding an XOR operation, and polarization is stopped by deleting the XOR operation for communication channels that meet a certain quality.

[0031] The method of the first embodiment can improve the performance of polar coding by promoting channel polarization through the addition of XOR operations, even when the codeword length is short, and by stopping polarization of channels that have reached a certain quality, it is possible to prevent the occurrence of unnecessary poor channels.

[0032] (First Method) The base station 10 and the terminal 20 may determine the position at which to add an XOR operation in the encoder for promoting channel polarization in polar coding based on at least one of the following methods.

[0033] (Method 1-1) The base station 10 and the terminal 20 may use an XOR operation addition rule that is defined in advance by specifications, etc. For example, the XOR operation addition rule may be defined in the form of a code generator matrix, or may define an operation process for each bit in a codeword.

[0034] (Method 1-2) The base station 10 and the terminal 20 may use an XOR operation addition pattern that is defined in advance by specifications, etc. For example, as the XOR operation addition pattern, a configuration diagram of a polar encoding encoder to which an XOR operation is added may be explicitly defined.

[0035] (Second Method) The base station 10 and the terminal 20 may determine the quality of the communication channel when determining whether to stop communication channel polarization (remove XOR operations) in Relax Polar coding, based on at least one of the following methods.

[0036] (Method 2-1) The base station 10 and the terminal 20 determine the quality of the communication channel at which they stop channel polarization in polar coding when the channel capacity of a good communication channel is equal to or greater than a predetermined threshold. That is, the base station 10 and the terminal 20 may stop channel polarization in polar coding when the channel capacity of a good communication channel is equal to or greater than a predetermined threshold.

[0037] (Method 2-2) The base station 10 and the terminal 20 set the quality of the communication channel at which they stop communication channel polarization in polar coding when the error rate in a good communication channel is equal to or lower than a predetermined threshold. That is, the base station 10 and the terminal 20 may stop communication channel polarization in polar coding when the error rate in a good communication channel is equal to or higher than a predetermined threshold.

[0038] (Method 2-3) The base station 10 and the terminal 20 determine the quality of the communication channel at which they stop channel polarization in polar coding when the channel capacity of a poor communication channel is equal to or less than a predetermined threshold. That is, the base station 10 and the terminal 20 may stop channel polarization in polar coding when the channel capacity of a poor communication channel is equal to or less than a predetermined threshold.

[0039] (Method 2-4) The base station 10 and the terminal 20 set the quality of the communication channel at which they stop communication channel polarization in polar coding when the error rate in a poor communication channel is equal to or greater than a predetermined threshold. That is, the base station 10 and the terminal 20 may stop communication channel polarization in polar coding when the error rate in a poor communication channel is equal to or greater than a predetermined threshold.

[0040] In the above-described methods 2-1 to 2-4, the channel capacity and error rate may be calculated from theoretical values ​​or may be calculated in advance by numerical calculation using a simulator or the like. The threshold may be determined based on the desired quality, may be changed depending on the coding rate, or may be changed depending on the modulation method. The threshold may be predetermined based on specifications or the like, or may be set by the base station 10 and the terminal 20.

[0041] (Third Method) The base station 10 and the terminal 20 may determine the position at which to remove the XOR operation in the encoder in order to stop channel polarization (remove the XOR operation) in polar encoding, based on at least one of the following methods.

[0042] (Method 3-1) The base station 10 and the terminal 20 may use an XOR operation elimination rule based on threshold determination in the second method, which rule is defined in advance by specifications, etc. For example, the XOR operation elimination rule may be defined in the form of a code generator matrix, or may define an operation process for each bit in a codeword.

[0043] (Method 3-2) The base station 10 and the terminal 20 may use an XOR operation elimination pattern based on threshold determination in the second method, which is defined in advance by specifications, etc. For example, as the XOR operation elimination pattern, a configuration diagram of a polar encoding encoder in which XOR operations are eliminated may be explicitly defined.

[0044] (Fourth Method) In polar coding, the base station 10 and the terminal 20 may apply both of adding an XOR operation to promote channel polarization and deleting an XOR operation to stop channel polarization, or may apply only one of them.

[0045] (Fifth Method) The base station 10 and the terminal 20 may limit the signals, channels, and information to be coded, to which the method according to the polar coding in this embodiment is applied.

[0046] For example, it may be limited to only uplink control information (UCI, Uplink Control Information) including feedback information (HARQ-ACK, Hybrid Automatic Repeat request-Acknowledgement), only UCI including channel state information (CSI, Channel State Information), only downlink control channels (PDCCHs), only PDCCHs including payloads of a specified size (e.g., X bits or more), and only downlink data channels (PDSCHs) and / or uplink data channels (PUSCHs), etc.

[0047] Furthermore, the base station 10 and the terminal 20 may simultaneously support the polar coding defined in 5G NR Rel-15 and the extended polar coding based on the method in this embodiment, or may support only the extended polar coding based on the method in this embodiment.

[0048] Second Example In the second example, setting information relating to the extended polar coding described in the first example and a method for notifying the setting information will be described.

[0049] The method shown in the second embodiment makes it possible to use the same configuration information related to the extended Polar coding described in the first embodiment between multiple communication devices (e.g., from a base station 10 to a terminal 20, from a terminal 20 to a base station 10, between multiple terminals 20, etc.).

[0050] (First Method) The setting information related to polar coding may be notified between communication devices by the following method.

[0051] (Method 1-1) The base station 10 and the terminal 20 may notify the setting information related to polar coding using the RRC (Radio Resource Control) protocol.

[0052] (Method 1-2) The base station 10 and the terminal 20 may notify the setting information related to polar coding using a medium access control (MAC) control element (CE).

[0053] (Method 1-3) The base station 10 and the terminal 20 may notify the setting information related to polar coding using DCI (Downlink Control Information) or UCI (Uplink Control Information).

[0054] (Second Method) The base station 10 and the terminal 20 may notify the following setting information related to polar coding. Here, the setting information may be called a parameter.

[0055] (Method 2-1) The base station 10 and the terminal 20 may notify information about the codeword length as setting information related to polar coding.

[0056] (Method 2-2) The base station 10 and the terminal 20 may notify information about the position where an XOR operation is to be added as setting information related to polar coding.

[0057] (Method 2-3) The base station 10 and the terminal 20 may notify an index indicating an additional XOR operation pattern as setting information related to polar coding.

[0058] (Method 2-4) The base station 10 and the terminal 20 may notify information about XOR operation deletion positions as setting information related to polar coding.

[0059] (Method 2-5) The base station 10 and the terminal 20 may notify an index indicating an XOR operation deletion pattern as setting information related to polar coding.

[0060] (Method 2-6) The base station 10 and the terminal 20 may notify information on a threshold value for determining whether to remove an XOR operation as configuration information related to polar coding. The threshold value is, for example, the threshold value used in the second method (Methods 2-1 to 2-4) of the first embodiment.

[0061] (Method 2-7) The base station 10 and the terminal 20 may notify, as configuration information related to polar coding, an index indicating a threshold pattern for determining whether to delete an XOR operation. The threshold is, for example, the threshold used in the second method (Methods 2-1 to 2-4) of the first embodiment.

[0062] (Method 2-8) The base station 10 and the terminal 20 may transmit, as configuration information related to polar coding, information related to an index indicating a reliability table for each codeword bit for determining information bit positions and / or frozen bit positions. Here, information bits and frozen bits (which may also be called dummy bits or known bits) are bits in a polar coding codeword that are transmitted using a good communication channel and a poor communication channel, respectively. Furthermore, the reliability table has a value indicating the reliability of each bit in a polar coding codeword. For example, bits with a reliability equal to or greater than a predetermined threshold are treated as information bits.

[0063] (Third Method) When the base station 10 and the terminal 20 set the configuration information related to the extended polar coding described in the first embodiment and / or when the configuration information is notified, the base station 10 and the terminal 20 may assume that at least one of the processing times shown below is shorter than the processing time assumed in polar coding under existing specifications.

[0064] (Method 3-1) The base station 10 and the terminal 20 may assume a shorter time than the decoding time of the downlink control channel (PDCCH) and / or downlink control information (DCI). Here, the decoding time of the PDCCH and / or DCI may be read as the assumed time of a default beam.

[0065] (Method 3-2) The base station 10 and the terminal 20 may assume a shorter time for decoding the downlink data channel (PDSCH), where the PDSCH decoding time may be expressed as N1.

[0066] (Method 3-3) The base station 10 and the terminal 20 may assume a shorter time for preparing the uplink data channel (PUSCH). Here, the preparation time for the PUSCH may be expressed as N2.

[0067] (Method 3-4) The base station 10 and the terminal 20 may assume a shorter time for preparing feedback information (HARQ-ACK).

[0068] (Method 3-5) The base station 10 and the terminal 20 may assume a shorter time for decoding the uplink control channel (PUCCH).

[0069] (Method 3-6) The base station 10 and the terminal 20 may assume a shorter time for decoding the uplink data channel (PUSCH).

[0070] In a third embodiment, when the extended polar coding described in the first embodiment is used, the base station 10 and the terminal 20 may have multiple code configurations with different XOR addition and / or deletion positions if different qualities are required under specific conditions. For example, having multiple code configurations may mean using multiple setting information related to polar coding.

[0071] This makes it possible to improve the performance of polar coding by applying the optimal polar coding code structure depending on the conditions.

[0072] (First Method) The base station 10 and the terminal 20 may have different code configurations for polar coding according to the following conditions.

[0073] (Method 1-1) The base station 10 and the terminal 20 may have different code configurations depending on the type of information to be coded (for example, control channel, data channel, etc.).

[0074] (Method 1-2) The base station 10 and the terminal 20 may have different code configurations depending on the priority of the information to be coded.

[0075] (Method 1-3) The base station 10 and the terminal 20 may have different code configurations depending on the state of their own devices (for example, the state of the transmission path).

[0076] (Second Method) The base station 10 and the terminal 20 may notify different setting information related to polar coding according to the specific conditions shown in the first method, using at least one of the methods shown below.

[0077] (Method 2-1) The base station 10 and the terminal 20 may notify different setting information according to specific conditions using the RRC (Radio Resource Control) protocol.

[0078] (Method 2-2) The base station 10 and the terminal 20 may notify different setting information according to specific conditions using a Medium Access Control (MAC) Control Element (CE).

[0079] (Method 2-3) The base station 10 and the terminal 20 may notify different setting information according to specific conditions using DCI (Downlink Control Information) or UCI (Uplink Control Information).

[0080] (Third Method) The base station 10 and the terminal 20 may include the following setting information related to polar coding in the setting information shown in the second method.

[0081] (Method 3-1) The base station 10 and the terminal 20 may include information on the codeword length in the configuration information shown in the second method.

[0082] (Method 3-2) The base station 10 and the terminal 20 may include information on the XOR operation addition position in the setting information shown in the second method.

[0083] (Method 3-3) The base station 10 and the terminal 20 may include information on an index indicating an XOR operation additional pattern in the setting information shown in the second method.

[0084] (Method 3-4) The base station 10 and the terminal 20 may include information on the XOR operation deletion position in the setting information shown in the second method.

[0085] (Method 3-5) The base station 10 and the terminal 20 may include information on an index indicating an XOR operation deletion pattern in the configuration information indicated in the second method.

[0086] (Method 3-6) The base station 10 and the terminal 20 may include information on a threshold value for determining whether to delete an XOR operation in the configuration information shown in the second method. The threshold value is, for example, the threshold value used in the second method (Methods 2-1 to 2-4) of the first embodiment.

[0087] (Method 3-7) The base station 10 and the terminal 20 may include information on an index indicating a threshold pattern for determining XOR operation elimination as configuration information related to polar coding. The threshold is, for example, the threshold used in the second method (Methods 2-1 to 2-4) of the first embodiment.

[0088] (Method 3-8) The base station 10 and the terminal 20 may include, as configuration information related to polar coding, information regarding an index indicating a reliability table for each codeword bit for determining information bit positions and / or frozen bit positions. Here, information bits and frozen bits (dummy bits) refer to bits in a polar coding codeword that are transmitted using a good communication channel and a poor communication channel, respectively. The reliability table also has a value indicating the reliability of each bit in a polar coding codeword. For example, bits with a reliability equal to or greater than a predetermined threshold are treated as information bits.

[0089] In this embodiment, the frozen bit may be rephrased as a known bit (for example, 0 or 1 is the known bit) that is added when encoding information bits based on a polar code.

[0090] Furthermore, the processing based on some or all of the methods described in this embodiment may be performed only when specific RRC parameters are set. Here, the "specific RRC parameters" may indicate whether the extended polar coding function is enabled or disabled (On / Off).

[0091] Furthermore, the extended polar coding described in this embodiment may be defined as a mandatory function (Mandatory with UE capability signaling) in 6G (e.g., specifications for a RAT different from 5G NR introduced after Rel-20), or may be defined as an optional function (Optional with UE capability signaling) in 5G NR and / or 6G. Here, a terminal capability signal (UE capability signaling) may be defined in which the terminal 20 reports information regarding support for the extended polar coding described in this embodiment to the base station 10.

[0092] The above-described embodiments can improve the performance of polar coding in wireless communication systems.

[0093] (Device Configuration) Next, a functional configuration example of the base station 10 and the terminal 20 that execute the processes and operations described above will be described. The base station 10 and the terminal 20 include functions for implementing the above-described embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions of the embodiments.

[0094] <Base Station 10> Figure 8 is a diagram showing an example of the functional configuration of the base station 10 according to the embodiment of the present invention. As shown in Figure 8, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Figure 8 is merely an example. The names of the functional divisions and functional units may be any as long as they can perform the operations according to the embodiment of the present invention.

[0095] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. The transmitter 110 also transmits inter-network node messages to other network nodes. The receiver 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of higher layers from the received signals. The transmitter 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc. to the terminal 20. The receiver 120 also receives inter-network node messages from other network nodes.

[0096] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20. The setting information includes, for example, information relating to the setting of polar coding.

[0097] As described in the embodiments, the control unit 140 performs control related to polar coding, etc. The control unit 140 also performs scheduling. The signal transmission-related functional unit of the control unit 140 may be included in the transmitting unit 110, and the signal reception-related functional unit of the control unit 140 may be included in the receiving unit 120.

[0098] <Terminal 20> Fig. 9 is a diagram showing an example of the functional configuration of terminal 20 in an embodiment of the present invention. As shown in Fig. 9, terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 9 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention.

[0099] The transmitter 210 creates a transmission signal from transmission data and transmits the transmission signal wirelessly. The receiver 220 wirelessly receives various signals and acquires higher layer signals from the received physical layer signals. The receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, and the like transmitted from the base station 10. For example, the transmitter 210 transmits a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), and the like to another terminal 20 as D2D communication, and the receiver 220 receives the PSCCH, PSSCH, PSDCH, or PSBCH, and the like, from the other terminal 20.

[0100] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220. The setting unit 230 also stores setting information that is set in advance. The setting information includes, for example, information related to the setting of polar coding.

[0101] As described in the embodiments, the control unit 240 performs control related to polar coding, etc. The functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220.

[0102] (Hardware Configuration) The block diagrams (FIGS. 8 and 9) used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0103] Functions include, but are not limited to, judgment, determination, assessment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0104] For example, the base station 10, the terminal 20, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 10 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the terminal 20 described above may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0105] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0106] Each function in the base station 10 and the terminal 20 is realized by loading specified software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0107] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0108] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002 and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 140 of the base station 10 shown in FIG. 8 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. For example, the control unit 240 of the terminal 20 shown in FIG. 9 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may also be transmitted from a network via a telecommunications line.

[0109] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0110] The secondary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0111] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0112] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0113] Furthermore, each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0114] Furthermore, the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0115] Fig. 11 shows an example configuration of a vehicle 2001. As shown in Fig. 11, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0116] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0117] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0118] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0119] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information acquired from external devices via the communication module 2013 or the like to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001. The information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that output information to the outside.

[0120] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0121] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided in the vehicle 2001.

[0122] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0123] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021-2028 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0124] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle-to-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.

[0125] <Additional Notes> (Additional Item 1) A communication device comprising: a control unit that generates a code word obtained by encoding information bits using an extended polar code to which an XOR (Exclusive OR) operation is added and polarization is stopped by deleting the XOR operation; and a transmission unit that transmits the code word to another communication device. (Additional Item 2) The communication device according to Additional Item 1, wherein the stopping of polarization by deleting the XOR operation is determined based on at least one of: a channel capacity of a good channel for the polar code, an error rate in the good channel, and a channel capacity of a poor channel for the polar code and an error rate in the poor channel. (Additional Item 3) The communication device according to Additional Item 1, wherein the transmission unit transmits configuration information to the other communication device, the configuration information including any one of information on the code word length, information on the position at which an XOR operation is added, information on the position at which an XOR operation is deleted, information on a threshold for determining whether to delete an XOR operation, and information indicating the position of an information bit in the code word. (Supplementary Item 4) The communication device according to Supplementary Item 1, wherein, when configuration information related to the extended polar code is configured or the configuration information is notified, the control unit assumes that at least one of a decoding time for a downlink control channel, a decoding time for downlink control information, a decoding time for a downlink data channel, a preparation time for an uplink data channel, a preparation time for feedback information, a decoding time for the uplink control channel, and a decoding time for the uplink data channel is shorter than a case where the extended polar code is not used. (Supplementary Item 5) The communication device according to Supplementary Item 1, wherein the control unit sets different configuration information related to the extended polar code depending on at least one of a type of information to be coded, a priority of the information to be coded, and a transmission path state. (Supplementary Item 6) A communication method executed by a communication device, comprising: generating a codeword by coding information bits using an extended polar code to which an XOR (Exclusive OR) operation is added and polarization is stopped by deleting the XOR operation; and transmitting the codeword to another communication device.

[0126] Any of Supplementary Items 1 to 6 can be used to perform event subscription and notification in an IMS data channel network.

[0127] (Supplementary Notes on the Embodiments) Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (as long as there is no contradiction). Boundaries between functional units or processing units in functional block diagrams do not necessarily correspond to boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof. The software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

[0128] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0129] Each aspect / embodiment described in the present disclosure may be implemented using any of the following standards: LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal number)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802.34 ( The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of LTE and / or LTE-A with 5G).

[0130] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be rearranged unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

[0131] In this specification, a specific operation described as being performed by the base station 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (such as an MME and an S-GW).

[0132] The information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0133] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be transmitted to another device.

[0134] In the present disclosure, the determination may be made by a value represented by one bit (0 or 1), by a Boolean value (true or false), or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0135] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0136] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0137] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0138] Note that terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0139] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0140] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

[0141] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0142] In the present disclosure, terms such as "base station (BS)," "radio base station," "base station device," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as a macrocell, a small cell, a femtocell, and a picocell.

[0143] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage.

[0144] In the present disclosure, the base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

[0145] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," and the like may be used interchangeably.

[0146] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0147] At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be a mobile object that moves autonomously based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0148] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0149] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station may be configured to have the functions of the user terminal described above.

[0150] As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0151] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0152] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0153] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0154] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0155] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0156] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0157] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0158] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0159] The aspects / embodiments described in this disclosure may be used alone, in combination, or switched depending on the implementation. Notification of predetermined information (e.g., notification that "X is true") is not limited to explicit notification, but may be implicit (e.g., not notifying the predetermined information).

[0160] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0161] 10 Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 30 Network node 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheels 2008 Rear wheels 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 RPM sensor 2023 Tire pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving assistance system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

Claims

1. A communication device having: a control unit that generates a code word that encodes information bits using an extended polar code that adds an XOR (Exclusive OR) operation and stops polarization by deleting the XOR operation; and a transmission unit that transmits the code word to another communication device.

2. The communication device according to claim 1, wherein the stopping of polarization by removing the XOR operation is determined based on at least one of the following: the channel capacity of a good channel in the polar code, the error rate in the good channel; the channel capacity of a poor channel in the polar code, and the error rate in the poor channel.

3. The communication device according to claim 1, wherein the transmitting unit transmits to the other communication device configuration information including any one of information regarding the code word length, information regarding the position where an XOR operation is added, information regarding the position where an XOR operation is deleted, information regarding a threshold for determining whether to delete an XOR operation, and information indicating the position of an information bit in the code word.

4. The communication device of claim 1, wherein, when the setting information related to the extended polar code is set or when the setting information is notified, the control unit assumes that at least one of the decoding time of the downlink control channel, the decoding time of the downlink control information, the decoding time of the downlink data channel, the preparation time of the uplink data channel, the preparation time of the feedback information, the decoding time of the uplink control channel, and the decoding time of the uplink data channel will be shorter than when the extended polar code is not used.

5. The communication device according to claim 1, wherein the control unit sets setting information relating to different extended polar codes depending on at least one of the type of information to be coded, the priority of the information to be coded, and the state of the transmission path.

6. A communication method executed by a communication device, comprising: a step of generating a code word that encodes information bits using an extended polar code that applies an XOR (Exclusive OR) operation to the code word and a step of stopping polarization by deleting the XOR operation to the code word; and a step of transmitting the code word to another communication device.

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