Method and apparatus for resource scheduling in communication system

Abstract

The present disclosure relates to resource scheduling technology in a communication system. According to the present disclosure, a method of a first communication node may be provided, comprising: transmitting a first signal to the second communication nodes, the first signal comprising at least one of device identifiers of the second communication nodes, transmission scheduling information for the second communication nodes, information on a transmission resource type, transmission resource common information, or instruction information indicating at least one transmission resource; and receiving at least one second signal from each of the second communication nodes through the transmission scheduling information of the second control information selected based on the first control information and the instruction information of the third control information selected through the at least one transmission resource.

Description

Technology Field

[0001] The present disclosure relates to a resource scheduling technique in a communication system, and more specifically, to a resource scheduling technique for setting resources based on the operational characteristics of an Internet of Things (IoT) terminal in a communication system. Background Technology

[0002] Along with the advancement of information and communication technology, various wireless communication technologies can be developed. Representative wireless communication technologies include LTE (long term evolution), NR (new radio), and 6G (6th Generation), which are defined in the 3GPP (3rd generation partnership project) standards. LTE can be one of the wireless communication technologies among 4G (4th Generation) wireless communication technologies, and NR can be one of the wireless communication technologies among 5G (5th Generation) wireless communication technologies.

[0003] To handle the surge in wireless data following the commercialization of 4G communication systems (e.g., communication systems supporting LTE), not only the frequency bands of 4G communication systems (e.g., frequency bands below 6 GHz) but also 5G communication systems (e.g., communication systems supporting NR) that use frequency bands higher than those of 4G communication systems (e.g., frequency bands above 6 GHz) may be considered. 5G communication systems can support eMBB (enhanced Mobile BroadBand), URLLC (Ultra-Reliable and Low Latency Communication), and mMTC (massive Machine Type Communication).

[0004] In the field of information and communication technology, the Internet of Things (IoT) has recently been receiving significant attention for its potential to increase industrial production efficiency and enhance the comfort of daily life. In IoT technology, IoT terminals can operate with low power consumption. Communication systems may require a method for configuring transmission resources that takes into account the operational characteristics of such IoT terminals. The problem to be solved

[0005] The objective of the present disclosure to solve the above-mentioned problems is to provide a resource scheduling method and apparatus in a communication system for setting resources based on the operational characteristics of an Internet of Things (IoT) terminal. means of solving the problem

[0006] A resource scheduling method in a communication system according to a first embodiment of the present disclosure for achieving the above objective may include, as a method of a first communication node, a step of generating first control information including device identifiers of second communication nodes; a step of generating second control information including scheduling information for the second communication nodes arranged to correspond to the arrangement order of the device identifiers; a step of generating third control information including at least one of information on a transmission resource type indicating a multiplexing method of one or more transmission resources for the second communication nodes, transmission resource common information which is resource setting information of the one or more transmission resources configured according to the transmission resource type, or instruction information indicating at least one transmission resource of each of the second communication nodes; a step of transmitting a first signal including the first control information, the second control information, and the third control information to the second communication nodes; and a step of receiving at least one second signal from each of the second communication nodes through the transmission scheduling information of the second control information selected based on the first control information and the instruction information of the third control information selected by the at least one transmission resource.

[0007] Here, the first control information may further include information regarding the number of device identifiers included in the first control information.

[0008] Here, the first control information is one of L1 (layer 1) control information or upper layer information, the second control information is the upper layer information, and the third control information may be one of the L1 control information or the upper layer information.

[0009] Here, the transmission resource type is at least one of a first type in which the one or more transmission resources are composed of one time resource and one frequency resource, a second type in which the one or more transmission resources are composed of multiple time resources in a time-division method, a third type in which the one or more transmission resources are composed of multiple frequency resources in a frequency-division method, or a fourth type in which the one or more transmission resources are composed of multiple time resources and multiple frequency resources in a time-division method and a frequency-division method, and the transmission resource common information may include at least one of the number of time resources or the number of frequency resources of the one or more transmission resources.

[0010] Here, the instruction information may be at least one of the index of the at least one transmission resource for each of the second communication nodes or the arrangement order of the device identifiers of each of the second communication nodes.

[0011] Here, the common information of the transmission resource may include at least one of information regarding the repeated transmission of the at least one second signal, information regarding the modulation order of the at least one second signal, information regarding the channel coding rate of the at least one second signal, information regarding the midamble setting of the at least one second signal, or information regarding the postamble setting of the at least one second signal.

[0012] Here, the first signal may include at least one of information regarding the start time of the at least one transmission resource or information regarding the transmission length.

[0013] Meanwhile, a resource scheduling method in a communication system according to a second embodiment of the present disclosure for achieving the above objective may include, as a method of a second communication node, a step of receiving a first signal from a first communication node comprising: information regarding device identifiers of the second communication nodes; transmission scheduling information for the second communication nodes arranged to correspond to the arrangement order of the device identifiers; information regarding a transmission resource type indicating a multiplexing method of one or more transmission resources for the second communication nodes; transmission resource common information which is resource setting information of the one or more transmission resources configured according to the transmission resource type; and instruction information indicating at least one transmission resource of each of the second communication nodes in the one or more transmission resources; a step of verifying the transmission scheduling information of the second communication node based on the arrangement order of the second communication nodes in the device identifiers; a step of determining the one or more transmission resources based on the information regarding the transmission resource type and the transmission resource common information; and a step of transmitting a second signal to the first communication node according to the transmission scheduling information through the at least one transmission resource for the second communication node indicated by the instruction information in the one or more transmission resources.

[0014] Here, the information regarding the device identifiers is one of L1 (layer 1) control information or upper layer information, the transmission scheduling information is the upper layer information, the information regarding the transmission resource type is one of the L1 control information or the upper layer information, the transmission resource common information is one of the L1 control information or the upper layer information, and the instruction information may be one of the L1 control information or the upper layer information.

[0015] Here, the transmission resource type is at least one of a first type in which the one or more transmission resources are composed of one time resource and one frequency resource, a second type in which the one or more transmission resources are composed of multiple time resources in a time-division method, a third type in which the one or more transmission resources are composed of multiple frequency resources in a frequency-division method, or a fourth type in which the one or more transmission resources are composed of multiple time resources and multiple frequency resources in a time-division method and a frequency-division method, and the transmission resource common information may include at least one of the number of time resources or the number of frequency resources of the one or more transmission resources.

[0016] Here, the instruction information may be one of the index of at least one transmission resource for each of the second communication nodes or the arrangement order of the device identifiers of each of the second communication nodes.

[0017] Here, the common information of the transmission resource may include at least one of information regarding the repeated transmission of the at least one second signal, information regarding the modulation order of the at least one second signal, information regarding the channel coding rate of the at least one second signal, information regarding the midamble setting of the at least one second signal, or information regarding the postamble setting of the at least one second signal.

[0018] Here, the first signal includes at least one of information regarding the start time of the at least one transmission resource or information regarding the transmission length, and the second communication node can transmit the second signal to the first communication node according to the transmission length at the start time.

[0019] Meanwhile, in a communication system according to a third embodiment of the present disclosure for achieving the above objective, a resource scheduling device comprises, as a second communication node, at least one processor, wherein the at least one processor receives from a first communication node a first signal comprising: information regarding device identifiers of the second communication nodes; transmission scheduling information for the second communication nodes arranged to correspond to the arrangement order of the device identifiers; information regarding a transmission resource type indicating a multiplexing method of one or more transmission resources for the second communication nodes; transmission resource common information which is resource setting information of the one or more transmission resources configured according to the transmission resource type; and instruction information indicating at least one transmission resource of each of the second communication nodes in the one or more transmission resources; confirms the transmission scheduling information of the second communication node based on the arrangement order of the second communication nodes in the device identifiers; and determines the one or more transmission resources based on the information regarding the transmission resource type and the transmission resource common information. And, in the above one or more transmission resources, a second signal may be transmitted to the first communication node according to the transmission scheduling information through the at least one transmission resource for the second communication node indicated by the instruction information.

[0020] Here, the transmission resource type is at least one of a first type in which the one or more transmission resources are composed of one time resource and one frequency resource, a second type in which the one or more transmission resources are composed of multiple time resources in a time-division method, a third type in which the one or more transmission resources are composed of multiple frequency resources in a frequency-division method, or a fourth type in which the one or more transmission resources are composed of multiple time resources and multiple frequency resources in a time-division method and a frequency-division method, and the transmission resource common information may include at least one of the number of time resources or the number of frequency resources of the one or more transmission resources.

[0021] Here, the instruction information may be at least one of the index of the at least one transmission resource for each of the second communication nodes or the arrangement order of the device identifiers of each of the second communication nodes.

[0022] Here, the first signal includes at least one of information regarding the start time of the at least one transmission resource or information regarding the transmission length, and the second communication node can transmit the second signal to the first communication node according to the transmission length at the start time. Effects of the invention

[0023] According to the present disclosure, a reader can provide various types of transmission resource configurations to devices based on time division or frequency division methods. In this way, the reader can provide transmission resource configuration information based on the low power, density, etc. of the devices, thereby providing flexible resource scheduling in response to various service requirements. Furthermore, according to the present disclosure, the reader can indicate transmission scheduling information for each device and indicate transmission resources based on the order of device identifiers. Accordingly, the reader can prevent collisions among multiple devices and distribute resources evenly. Brief explanation of the drawing

[0024] FIG. 1 is a conceptual diagram illustrating embodiments of a communication system. FIG. 2 is a block diagram illustrating embodiments of communication nodes constituting a communication system. FIG. 3 is a conceptual diagram showing embodiments of a communication system including an Internet of Things device. FIG. 4 is a conceptual diagram showing examples of transmission signals transmitted by the R node to the D node. FIG. 5 is a conceptual diagram showing examples of transmission signals transmitted by the R node to the D node. FIG. 6 is a conceptual diagram showing examples of signals transmitted from node D to node R. FIG. 7 is a conceptual diagram showing embodiments of a signal transmitted from node D to node R. FIG. 8 is a conceptual diagram showing embodiments of a signal transmitted from node D to node R. FIG. 9 is a conceptual diagram showing embodiments of resources for transmitting a signal from node D to node R. FIG. 10 is a conceptual diagram showing embodiments of RD (reader to device) control information. FIG. 11 is a conceptual diagram showing embodiments of RD control information including common information. FIG. 12 is a conceptual diagram showing embodiments of RD control information including common information. FIG. 13 is a conceptual diagram showing embodiments of a D2R transmission resource configuration method for transmitting a signal from a D node to an R node. FIG. 14 is a conceptual diagram showing embodiments of a D2R transmission resource configuration method for transmitting a signal from a D node to an R node. FIG. 15 is a conceptual diagram showing embodiments of a D2R transmission resource configuration method for transmitting a signal from a D node to an R node. FIG. 16 is a conceptual diagram showing embodiments of a D2R transmission resource configuration method for transmitting a signal from a D node to an R node. FIG. 17 is a conceptual diagram showing embodiments of a method for indicating the resources of a signal transmitted from node D to node R. FIG. 18 is a conceptual diagram showing embodiments of a method for indicating the resources of a signal transmitted from node D to node R. FIG. 19 is a conceptual diagram showing embodiments of a method for setting the transmission length and start time of a signal transmitted from node D to node R. FIG. 20 is a conceptual diagram showing embodiments of a method for indicating the resources of a signal transmitted from node D to node R. FIG. 21 is a conceptual diagram showing embodiments of a method for setting the transmission length and start time of a signal transmitted from node D to node R. Specific details for implementing the invention

[0025] The present disclosure is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present disclosure to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present disclosure.

[0026] Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0027] In embodiments of the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B". Additionally, in embodiments of the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B".

[0028] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0029] In the present disclosure, a phrase containing "~ case (e.g., when ~)" may be expressed as a phrase containing "~ based on (e.g., based on ~)" or a phrase containing "~ in response to (e.g., in response to ~)". In other words, a phrase containing "~ case" may be interpreted as identical or similar to a phrase containing "~ based on" or a phrase containing "~ in response to".

[0030] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit this disclosure. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this disclosure, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0031] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this disclosure pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this disclosure.

[0032] Hereinafter, preferred embodiments of the present disclosure will be described in more detail with reference to the attached drawings. In order to facilitate an overall understanding of the present disclosure, the same reference numerals are used for identical components in the drawings, and redundant descriptions of identical components are omitted.

[0033] FIG. 1 is a conceptual diagram illustrating embodiments of a communication system.

[0034] Referring to FIG. 1, a communication system (100) may include a plurality of communication nodes (110-1, 110-2, 110-3, 120-1, 120-2, 130-1, 130-2, 130-3, 130-4, 130-5, 130-6). Here, the communication system may be referred to as a "communication network". Each of the plurality of communication nodes may support at least one communication protocol. For example, each of the multiple communication nodes may support a communication protocol based on CDMA (code division multiple access), WCDMA (wideband CDMA), TDMA (time division multiple access), FDMA (frequency division multiple access), OFDM (orthogonal frequency division multiplexing), OFDMA (orthogonal frequency division multiple access), SC (single carrier)-FDMA, NOMA (non-orthogonal multiple access), SDMA (space division multiple access), etc. Each of the multiple communication nodes may have the following structure.

[0035] FIG. 2 is a block diagram illustrating embodiments of communication nodes constituting a communication system.

[0036] Referring to FIG. 2, the communication node (200) may include at least one processor (210), memory (220), and a transceiver (230) that is connected to a network to perform communication. Additionally, the communication node (200) may further include an input interface device (240), an output interface device (250), a storage device (260), etc. Each component included in the communication node (200) may communicate with each other by being connected by a bus (270). However, each component included in the communication node (200) may be connected via an individual interface or an individual bus centered around the processor (210), rather than via a common bus (270). For example, the processor (210) may be connected to at least one of the memory (220), the transceiver (230), the input interface device (240), the output interface device (250), and the storage device (260) through a dedicated interface.

[0037] The processor (210) can execute a program command stored in at least one of the memory (220) and the storage device (260). The processor (210) may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which the methods according to embodiments of the present disclosure are performed. Each of the memory (220) and the storage device (260) may be composed of at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory (220) may be composed of at least one of read-only memory (ROM) and random access memory (RAM).

[0038] Referring again to FIG. 1, the communication system (100) may include a plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) and a plurality of UEs (user equipment) (130-1, 130-2, 130-3, 130-4, 130-5, 130-6). Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) may form a macro cell. Each of the fourth base station (120-1) and the fifth base station (120-2) may form a small cell. The fourth base station (120-1), the third UE (130-3), and the fourth UE (130-4) may be within the coverage of the first base station (110-1). The second UE (130-2), the fourth UE (130-4), and the fifth UE (130-5) may be within the coverage of the second base station (110-2). The fifth base station (120-2), the fourth UE (130-4), the fifth UE (130-5), and the sixth UE (130-6) may be within the coverage of the third base station (110-3). The first UE (130-1) may be within the coverage of the fourth base station (120-1). The sixth UE (130-6) may be within the coverage of the fifth base station (120-2).

[0039] Here, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be referred to as Node B, evolved Node B, base transceiver station (BTS), radio base station, radio transceiver, access point, access node, roadside unit (RSU), digital unit (DU), cloud digital unit (CDU), radio remote head (RRH), radio unit (RU), transmission point (TP), transmission and reception point (TRP), relay node, etc. Each of the multiple UEs (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) may be referred to as a terminal, access terminal, mobile terminal, station, subscriber station, mobile station, portable subscriber station, node, device, etc.

[0040] Each of the multiple communication nodes (110-1, 110-2, 110-3, 120-1, 120-2, 130-1, 130-2, 130-3, 130-4, 130-5, 130-6) can support cellular communication (e.g., LTE (long term evolution), LTE-A (advanced), etc. as defined in the 3GPP (3rd generation partnership project) standard). Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can operate in different frequency bands or in the same frequency band. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can be connected to each other via an ideal backhaul or a non-ideal backhaul, and can exchange information with each other via the ideal backhaul or the non-ideal backhaul. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can be connected to a core network (not shown) via an ideal backhaul or a non-ideal backhaul. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit a signal received from the core network to the corresponding UE (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) and can transmit a signal received from the corresponding UE (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) to the core network.

[0041] Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can support OFDMA-based downlink transmission and SC-FDMA-based uplink transmission. In addition, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can support MIMO (multiple input multiple output) transmission (e.g., SU (single user)-MIMO, MU (multi user)-MIMO, massive MIMO, etc.), CoMP (coordinated multipoint) transmission, carrier aggregation transmission, transmission in an unlicensed band, device-to-device (D2D) communication (or ProSe (proximity services), etc.). Here, each of the multiple UEs (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) is a base station (110-1, 110-2, 110-3, 120-1, It can perform operations corresponding to 120-2) and operations supported by base stations (110-1, 110-2, 110-3, 120-1, 120-2).

[0042] Meanwhile, 5G communication systems can support data transmission functions tailored to service characteristics. 5G communication systems and data transmission technologies may vary according to service requirements to support data transmission functions tailored to service characteristics. 5G communication systems can apply technologies required by the service under consideration while maintaining basic operation procedures or signal structures as much as possible.

[0043] The services considered in this disclosure may be Internet of Things (IoT) services such as logistics verification, process processing, monitoring of industrial equipment operation, and equipment control in industries or factories. Additionally, the services considered in this disclosure may be IoT services available across society, such as micro-mobility and power consumption measurement.

[0044] IoT devices for IoT services can accommodate various applications while further reducing size, complexity, and power consumption, and can be deployed in large capacities of hundreds of billions or more. However, due to issues such as maintenance and management, it can be difficult to manually replace batteries or recharge IoT devices. IoT technology may require new ambient IoT (AIoT) technologies to support devices without energy storage capabilities, devices without batteries, devices that do not require manual battery replacement, or devices that do not require battery recharging.

[0045] In an AIoT network, an IoT device may be a wireless device with lower complexity than a narrow band (NB) IoT device or an LTE-MTC (long-term evolution machine type communication) device. In an AIoT network, an IoT device may be a wireless device that does not have a battery. Alternatively, in an AIoT network, an IoT device may be a wireless device that has a battery of limited capacity.

[0046] As such, the wireless device considered in this disclosure can operate without a battery. The wireless device considered in this disclosure can operate without being connected to an external power source. The wireless device considered in this disclosure can secure the energy required for operation by obtaining, collecting, aggregating, and harvesting energy sources from the surrounding environment.

[0047] For example, the wireless device considered in this disclosure may obtain energy necessary for operation from a wireless signal transmitted by another wireless device in the vicinity. The wireless device considered in this disclosure may backscatter a wireless signal received from another wireless device in the vicinity and transmit the backscattered wireless signal. The wireless device considered in this disclosure may be defined as an ambient IoT device or terminal as a device that harvests energy from the surrounding environment. An ambient IoT terminal may be defined as an IoT device or terminal for the convenience of the art. The object of this disclosure is to provide a method and apparatus for setting transmission resources to enable an IoT terminal to operate with low power. Additionally, the object of this disclosure is to provide a method and apparatus for instructing or scheduling setting information of transmission resources to an IoT device.

[0048] FIG. 3 is a conceptual diagram showing embodiments of a communication system including an Internet of Things device.

[0049] Referring to FIG. 3, the communication node (310) may be a device that wirelessly transmits and receives data with an IoT device. The communication node (310) may be defined as a 'reader', 'R node', or 'R-node'. The communication node (320) may operate at low power as an AIoT device. The communication node (320) may communicate with the 'reader'. The communication node (320) may be defined as an 'IoT device', 'IoT terminal', 'IoT node', 'I node', or 'I-node'. The communication node (320) may be described as a 'D node' or 'D-node' as a device. The link from the communication node (310) to the communication node (320) may be called an RI link or an RD link. Conversely, the link from the communication node (320) to the communication node (310) may be called an IR link or a DR link.

[0050] A communication node (330) can emit or transmit a carrier wave (CW). The communication node (330) may be defined as a 'CW-node', 'CW node', 'CW device', or 'CW terminal'. Additionally, the communication node (330) may be defined as a carrier wave supply terminal, a carrier wave terminal, or a carrier wave node. The communication node (330) can transmit the carrier wave to an IoT node. The IoT node can collect, aggregate, or accumulate energy from the carrier wave. Additionally, the IoT node can backscatter the carrier wave to transmit or provide a signal to the communication node (310). The communication node (310) can receive the signal transmitted via backscatter from the IoT node.

[0051] The leader, which is the communication node (310), may be a base station or a terminal in a wireless communication network. A terminal can be connected to a base station to transmit and receive data and may refer to user equipment (UE). The CW node, which is the communication node (330), may be a base station or a terminal in a wireless communication network.

[0052] The I node (321) may be located at a distance where it can transmit and receive with the base station (340). In such an operating environment, the base station (340) may operate as an R node or a CW node with respect to the I node (321). Alternatively, a terminal (350) may perform the role of an R node or a CW node with respect to the I node (321). Alternatively, another adjacent base station may perform the function of an R node or a CW node with respect to the I node (321).

[0053] The I node (322) may be located at a distance from the base station (340) where at least transmission or reception is not possible. The I node (322) may operate at low power. In this case, the I node (322) may receive data from the base station (340). The I node (322) may transmit a signal having a signal strength below a certain level. The base station (340) may have difficulty receiving data from the I node (322) without errors.

[0054] A terminal (350) can perform the role of an R node capable of transmitting and receiving data with an I node (322). The I node (322) can receive data from a base station (340). The I node (322) can transmit data to the terminal (350). The terminal (350) can receive data from the I node (322) and transmit it to the base station (340). A terminal (351) other than the terminal (350) acting as the R node can perform the role of a CW node. Alternatively, the base station (340) can perform the role of a CW node. Alternatively, the base station (341) can perform the role of a CW node.

[0055] Alternatively, another adjacent base station (341) may act as an R node capable of transmitting and receiving data with the I node (322). In this case, the I node (322) may receive data from the base station (340). The I node (322) may transmit data to the other adjacent base station (341). The other adjacent base station (341) may receive data from the I node (322) and transmit the received data to the base station (340). The base station (340) may receive data from the other adjacent base station (341). The terminal (350) may act as a CW node.

[0056] Methods for configuring the transmit / receive channels, frequencies, or links of communication nodes in a wireless communication network may be described. A wireless communication network may be composed of 'R nodes', 'I nodes (or D nodes)', or 'CW nodes'. 'R nodes' and 'CW nodes' may be implemented as at least physically identical communication nodes. 'R nodes' and 'CW nodes' may be implemented as base stations or terminals. The signal link transmitted by a base station to a terminal may be referred to as a downlink, and the signal link transmitted by a terminal to a base station may be referred to as an uplink.

[0057] In the present disclosure, a link through which an 'R node' transmits a signal to a 'D node' may be defined as an 'R2D link'. A link through which a 'D node' transmits a signal to an 'R node' may be defined as a 'D2R link'. A link through which a 'CW node' transmits a signal to a 'D node' may be defined as a 'CW2D link'.

[0058] In this disclosure, an R2D / D2R / CW2D link may be described as an R2D / D2R / CW2D link transmission or an R2D / D2R / CW2D transmission. However, with respect to detail, a link may refer to a connection between two nodes. 'Transmission' may refer to the actual transmission of a signal when a wireless resource is occupied. For example, 'R2D transmission' may refer to a signal or set of signals transmitted through an R2D link during any time interval (e.g., multiple slots).

[0059] Additionally, in this disclosure, the transmission resource of the 'R2D / D2R / CW2D link' may refer to a resource area capable of transmission. 'R2D / D2R / CW2D transmission' may refer to the transmission itself, where actual transmission takes place through the said resource area. For the sake of technical convenience, this disclosure may assume that 'R2D / D2R / CW2D transmission' is performed across the entire R2D / D2R / CW2D transmission resource. In other words, it may be assumed that the size or area of ​​the resource area and the transmission itself are identical. R2D transmission or R2D Tx may refer to a signal transmitted from the R node to the D node. D2R transmission or D2R Tx may refer to a signal transmitted from the D node to the R node. D2R Tx may be configured in a resource in a time and / or frequency domain that the R node has scheduled, allocated, or instructed to the D node, or that is predefined, and may be transmitted from the D node to the R node.

[0060] [R2D Transmission]

[0061] FIG. 4 is a conceptual diagram showing examples of transmission signals transmitted by the R node to the D node.

[0062] Referring to FIG. 4, the R2D transmission signal transmitted by the R node to the D node may include an RD preamble (410) and a PRDCH (physical reader to device channel) (420) to indicate the start of the R2D transmission signal. The RD preamble may precede the PRDCH. In other words, the RD preamble may be transmitted first in the R2D transmission signal. The PRDCH may follow the RD preamble. The RD preamble may be composed of any pattern or sequence. The RD preamble may include a start indicator part (SIP) to indicate the start of the R2D transmission signal and a clock acquisition part (CAP) to check clock or chip information.

[0063] PRDCH may include at least one of upper layer data, upper layer information, or data to be transmitted to the D node. PRDCH may include RD control information (RDCI). RDCI may include at least one of L1 (layer 1) control information, PRDCH data, a message, or upper layer information.

[0064] RDCI may include information that can estimate or verify the length information of an R2D transmission at the D node. RDCI may include information on the type of message to be transmitted via the R2D transmission. The message type may be, for example, an inventory triggering message of the random access process of the inventory. Or, the message type may be, for example, a message2 (message2, Msg2) corresponding to the D node's response to triggering in the random access process of the inventory.

[0065] RDCI can be configured to be separated so that control information can be checked before other data received together via PRDCH at the D node. Being configured to be separated means that control information can be checked at the D node without receiving and demodulating / decoding the entire message of PRDCH.

[0066] FIG. 5 is a conceptual diagram showing examples of transmission signals transmitted by the R node to the D node.

[0067] Referring to FIG. 5, the R2D transmission signal transmitted by the R node to the D node may include an RD preamble (510) and a PRDCH (520) to indicate the start of the R2D transmission signal. The RD preamble may precede the PRDCH. In other words, the RD preamble may be transmitted first in the R2D transmission signal. The PRDCH may follow the RD preamble. The RD preamble may be composed of any pattern or sequence. The RD preamble may include a start indicator part (SIP) to indicate the start of the R2D transmission signal and a clock acquisition part (CAP) to check clock or chip information.

[0068] PRDCH may include at least one of upper-layer data, upper-layer information, or data to be transmitted to the D node. PRDCH may include RD control information (RDCI). RDCI may include at least one of L1 control information, PRDCH data, a message, or upper-layer information.

[0069] RDCI may include information that can estimate or verify the length information of the R2D transmission at the D node. RDCI may include information on the type of message to be transmitted through the R2D transmission. The message type may be, for example, an inventory triggering message of the inventory random access process. Or, the message type may be, for example, a message 2 (Msg2) corresponding to the D node's response to triggering in the inventory random access process.

[0070] RDCI can be configured to be separated so that control information can be checked before other data received together via PRDCH at the D node. Being configured to be separated means that the D node can check the information without receiving and demodulating / decoding the entire message of PRDCH. Additionally, being configured to be separated means that the R node independently processes the control information (e.g., a sequence of bit information) using at least one of error correction channel encoding or cyclic redundancy check (CRC).

[0071] The R2D transmission signal may include a postamble (521). The R node may not include information in the RDCI that allows the D node to estimate or verify the length information of the R2D transmission. In such cases, the R node may include a postamble in the R2D transmission signal and transmit the R2D transmission signal including the postamble to the D node. The D node may receive the R2D transmission signal including the postamble from the R node. The D node may identify the end of the R2D transmission signal using the postamble. The D node may recognize the end of the R2D transmission signal using the postamble. The D node may obtain transmission end information using the postamble. Alternatively, the D node may identify the end of the R2D transmission signal by detecting the postamble. The D node may recognize the end of the R2D transmission signal by detecting the postamble. The D node may obtain transmission end information by detecting the postamble.

[0072] The postamble of the R2D transmission signal can be utilized as a reference signal to determine the transmission time of the D2R transmission signal corresponding to the R2D transmission signal. In other words, the D node can utilize the postamble of the R2D transmission signal as a reference signal to determine the transmission time of the D2R transmission signal. The R node can set scheduling information regarding the D2R transmission signal for the D node(s) and can transmit the set scheduling information to the D node(s). The scheduling information may include information regarding the transmission time of the D2R transmission signal. The R node can set the transmission time of the D2R transmission signal based on the postamble or the end sample of the postamble. The end sample may be, for example, a end chip. The D node can receive the scheduling information of the D2R transmission signal from the R node. The D node can determine or verify the transmission time of the D2R transmission signal from the postamble located at the end of the R2D transmission signal containing the scheduling information or the end sample of the postamble.

[0073] FIG. 6 is a conceptual diagram showing examples of signals transmitted from node D to node R.

[0074] Referring to FIG. 6, the D2R transmission signal transmitted by the D node to the R node may include a DR preamble (610) and a PDRCH (physical device to reader channel) (620) to indicate the start of the D2R transmission signal. The DR preamble may be transmitted first in the D2R transmission signal. The DR preamble may be composed of any pattern or sequence. Accordingly, the D node may utilize the DR preamble for receiving the D2R transmission signal. The D node may transmit data or upper layer data that it wishes to transmit to the R node via the PDRCH. For example, the D node may transmit data or upper layer data that it wishes to transmit to the R node via the PDRCH by composing it with at least OOK (on-off keying) symbols or binary PSK (phase shift keying) symbols. Node R can receive a PDRCH containing data or upper-layer data that Node D wishes to transmit, and can obtain data or upper-layer data that Node D wishes to transmit from the received PDRCH.

[0075] FIG. 7 is a conceptual diagram showing embodiments of a signal transmitted from node D to node R.

[0076] Referring to FIG. 7, the D2R transmission signal transmitted by the D node to the R node may include a DR preamble (710), a PDRCH (720), and a postamble (730). The postamble may be defined as one of the midambles. The DR preamble may be transmitted first in the D2R transmission signal. The DR preamble may be composed of any pattern or sequence. Accordingly, the D node may utilize the DR preamble for receiving the D2R transmission signal. The D node may transmit data or upper layer data that it wishes to transmit to the R node via the PDRCH. For example, the D node may transmit data or upper layer data that it wishes to transmit to the R node via the PDRCH by composing it with at least OOK symbols or binary PSK symbols. Node R can receive a PDRCH containing data or upper-layer data that Node D wishes to transmit, and can obtain data or upper-layer data that Node D wishes to transmit from the received PDRCH.

[0077] FIG. 8 is a conceptual diagram showing embodiments of a signal transmitted from node D to node R.

[0078] Referring to FIG. 8, the D2R transmission signal transmitted by the D node to the R node may include a DR preamble (810), PDRCHs (820-1, 820-2), midambles (830-1, 830-2), and a postamble (840). The postamble may be defined as one of the midambles. The DR preamble may be transmitted first in the D2R transmission signal. The DR preamble may be composed of any pattern or sequence. Accordingly, the D node may utilize the DR preamble for receiving the D2R transmission signal. The D node may transmit data or upper layer data that it wishes to transmit to the R node via the PDRCHs. For example, the D node may transmit data or upper layer data that it wishes to transmit to the R node via the PDRCHs by composing it with at least OOK symbols or binary PSK symbols. Node R can receive a PDRCH containing data or upper-layer data that Node D wishes to transmit, and can obtain data or upper-layer data that Node D wishes to transmit from the received PDRCH.

[0079] Referring to FIGS. 6 through 8, D2R transmission signals may include DR preambles composed of binary sequences at the forefront for use in receiving D2R transmission signals at the R node. D2R transmission signals may include, for example, A midambles and / or one postamble. A may be a positive integer including 0. A number of midambles may be located between the PDRCHs. A postamble may be defined as one of the midambles. In addition to the preambles and / or midambles and / or postambles, the D node may transmit data to be conveyed or upper-layer data to the R node via the PDRCH. The D node may transmit data to the R node via the PDRCH by composing the data with at least OOK symbols or binary PSK symbols.

[0080] The R node can transmit information regarding the structure of the D2R transmission signal to the D node. The D node can receive information regarding the structure of the D2R transmission signal from the R node. For example, the R node can generate RD control information containing information regarding the structure of the D2R transmission signal. The R node can transmit an R2D transmission signal containing RD control information to the D node as scheduling information for the D2R transmission signal. The D node can receive the R2D transmission signal containing RD control information from the R node and can obtain RD control information from the received R2D transmission signal. The D node can determine the structure of the D2R transmission signal from the obtained RD control information.

[0081] The R node can transmit information regarding the preamble of the D2R transmission signal to the D node. The information regarding the preamble may include at least one of information regarding whether the preamble is configured, information regarding the number of configured preambles, or configuration information. The D node can receive information regarding the preamble of the D2R transmission signal from the R node. For example, the R node can generate RD control information that includes information regarding the preamble of the D2R transmission signal. The R node can transmit an R2D transmission signal containing RD control information to the D node as scheduling information for the D2R transmission signal. The D node can receive the R2D transmission signal containing RD control information from the R node and can obtain RD control information from the received R2D transmission signal. The D node can determine or verify whether the preamble of the D2R transmission signal is configured, the number of configured preambles, configuration information, etc., from the obtained RD control information.

[0082] The R node can transmit information regarding the midamble of the D2R transmission signal to the D node. The information regarding the midamble may include at least one of information regarding whether the midamble is configured, information regarding the number of configured midambles, or configuration information. The D node can receive information regarding the midamble of the D2R transmission signal from the R node. For example, the R node can generate RD control information that includes information regarding the midamble of the D2R transmission signal. The R node can transmit an R2D transmission signal containing RD control information to the D node as scheduling information for the D2R transmission signal. The D node can receive the R2D transmission signal containing RD control information from the R node and can obtain RD control information from the received R2D transmission signal. The D node can determine or verify whether the midamble of the D2R transmission signal is configured, the number of configured midambles, configuration information, etc., from the obtained RD control information.

[0083] The R node can transmit information regarding the postamble of the D2R transmission signal to the D node. The information regarding the postamble may include at least one of information regarding whether the postamble is configured, information regarding the number of configured elements, or configuration information. The D node can receive information regarding the postamble of the D2R transmission signal from the R node. For example, the R node can generate RD control information that includes information regarding the postamble of the D2R transmission signal. The R node can transmit an R2D transmission signal containing RD control information to the D node as scheduling information for the D2R transmission signal. The D node can receive the R2D transmission signal containing RD control information from the R node and obtain RD control information from the received R2D transmission signal. The D node can determine or verify whether the postamble of the D2R transmission signal is configured, the number of configured elements, configuration information, etc., from the obtained RD control information.

[0084] Node D can generate a D2R transmission signal based on the structure of a determined or confirmed D2R transmission signal and transmit the generated D2R transmission signal to Node R. Node R can receive the D2R transmission signal from Node D. Node D can generate a D2R transmission signal based on information regarding the preamble of a determined or confirmed D2R transmission signal and transmit the generated D2R transmission signal to Node R. Node R can receive the D2R transmission signal from Node D. Node D can generate a D2R transmission signal based on information regarding the midamble of a determined or confirmed D2R transmission signal and transmit the generated D2R transmission signal to Node R. Node R can receive the D2R transmission signal from Node D. Node D can generate a D2R transmission signal based on information regarding the postamble of a determined or confirmed D2R transmission signal and transmit the generated D2R transmission signal to Node R. Node R can receive the D2R transmission signal from Node D.

[0085] FIG. 9 is a conceptual diagram showing embodiments of resources for transmitting a signal from node D to node R.

[0086] Referring to FIG. 9, the R2D transmission signal (910) may include R2D transmission scheduling information. The R2D transmission scheduling information may include an indication identifier of the D node to receive the R2D transmission signal. The indication identifier may be, for example, the device identifier of the D node. The D node may receive the R2D transmission signal from the R node and may identify or detect the R2D transmission scheduling information in the R2D transmission signal. The D node may identify or detect the indication identifier in the R2D transmission scheduling information. The indication identifier may indicate the D node as the D node that received the R2D transmission signal. For example, the indication identifier may be the device identifier of the D node. The D node may complete the reception of the R2D transmission signal. The R2D transmission signal may include D2R transmission scheduling information (920). For example, the R2D transmission signal may include D2R transmission scheduling information for each of the device IDs. Node D can identify or detect D2R transmission scheduling information in the R2D transmission signal. For example, Node D can identify or detect D2R transmission scheduling information in the R2D transmission signal. Node D can identify D2R transmission resources for Node D in the D2R transmission scheduling information. Node D can transmit a D2R signal to Node R using the D2R transmission resources for Node D identified in the D2R transmission resources (930). Node R can receive a D2R signal from Node D through the D2R transmission resources for Node D.

[0087] The R node can broadcast the R2D transmission signal to the D nodes. In this case, the R2D transmission scheduling information may include the device identifiers of the D nodes that will receive the R2D transmission signal. The D node can receive the R2D transmission signal broadcast from the R node and can identify or detect the R2D transmission scheduling information in the R2D transmission signal. The D node can identify or detect the device identifier in the R2D transmission scheduling information. The device identifier identified or detected by the D node may be the device identifier of the D node. The D node can complete the reception of the R2D transmission signal. The R2D transmission signal may include D2R transmission scheduling information. For example, the R2D transmission signal may include D2R transmission scheduling information for each of the device IDs. The D node can identify or detect the D2R transmission scheduling information in the R2D transmission signal. For example, the D node can identify or detect the D2R transmission scheduling information in the R2D transmission scheduling information. Node D can identify D2R transmission resources for Node D in the D2R transmission scheduling information. Node D can transmit a D2R signal to Node R using the D2R transmission resources identified for Node D in the D2R transmission resources (930). Node R can receive a D2R signal from Node D through the D2R transmission resources for Node D.

[0088] The R node can broadcast the R2D transmission signal to the D nodes. In this case, the R2D transmission scheduling information may include broadcast identifiers of the D nodes that will receive the R2D transmission signal. The D node can receive the R2D transmission signal broadcast from the R node and can identify or detect the R2D transmission scheduling information in the R2D transmission signal. The D node can identify or detect the broadcast identifier in the R2D transmission scheduling information. The broadcast identifier identified or detected by the D node may be the broadcast identifier of the D node. The D node can complete the reception of the R2D transmission signal. The R2D transmission signal may include D2R transmission scheduling information. For example, the R2D transmission signal may include D2R transmission scheduling information for each of the device IDs. The D node can identify or detect the D2R transmission scheduling information in the R2D transmission signal. For example, the D node can identify or detect the D2R transmission scheduling information in the R2D transmission scheduling information. Node D can identify D2R transmission resources for Node D in the D2R transmission scheduling information. Node D can transmit a D2R signal to Node R using the D2R transmission resources identified for Node D in the D2R transmission resources (930). Node R can receive a D2R signal from Node D through the D2R transmission resources for Node D.

[0089] The R node can broadcast the R2D transmission signal to the D nodes. In this case, the R2D transmission scheduling information may not include device identifiers, broadcast identifiers, etc. The D node can receive the R2D transmission signal broadcast from the R node and can identify or detect the R2D transmission scheduling information from the R2D transmission signal. The D node may not be able to identify or detect device identifiers, broadcast identifiers, etc. from the R2D transmission scheduling information. The D node can identify or determine the R2D transmission signal as the broadcasted R2D transmission signal. The D node can complete the reception of the R2D transmission signal and obtain the necessary information.

[0090] In a first embodiment, the device ID may be composed of upper-layer information of the RD control information. D2R transmission scheduling information for the device ID may also be composed of upper-layer information of the RD control information. In a second embodiment, the device ID may be composed of L1 control information of the RD control information. D2R transmission scheduling information for the device ID may be composed of upper-layer information of the RD control information.

[0091] FIG. 10 is a conceptual diagram showing embodiments of RD (reader to device) control information.

[0092] Referring to FIG. 10, RD control information may include L1 control information and upper layer information. L1 control information may include information regarding the total number of device IDs, device IDs, etc. There may be N device IDs, and N may be a positive integer. In this way, information regarding the total number of device IDs may be included in the L1 control information of the RD control information. Information regarding the total number of device IDs may be configured prior to the device ID(s) in the L1 control information of the RD control information. L1 control information may include resource configuration information for D2R transmission. Each of the D nodes can determine the number of D2R transmissions from the resource configuration information. Each of the D nodes can determine the total number of device IDs from the number of D2R transmissions. In this case, the R node may not allocate D2R transmissions to some resources. At this time, the device ID may be composed of information that does not indicate anything (e.g., a Null value).

[0093] A D node can identify or detect its own device ID from the L1 control information of the RD control information. A D node can identify D2R transmission scheduling information from the upper layer information of the RD control information. The D2R transmission scheduling information for each of the D nodes in the upper layer information can be configured according to the respective order of the device IDs configured in the L1 control information. A D node can identify the order of device IDs in the L1 control information and identify or determine D2R transmission scheduling information corresponding to the order identified in the upper layer information.

[0094] RD control information may include information related to the scheduling of multiple D2R transmission signals. The scheduling information of multiple D2R transmission signals may include information that is indicated or provided identically to multiple D nodes. The scheduling information of multiple D2R transmission signals may be configured as common information in the RD control information.

[0095] FIG. 11 is a conceptual diagram showing embodiments of RD control information including common information.

[0096] Referring to FIG. 11, common information may be configured by being included in the L1 control information of the RD control information. Each of the D nodes may determine or verify its own D2R transmission scheduling information by combining the common information and the D2R transmission scheduling information for each of the D nodes. The common information may include information regarding the overall D2R transmission resource configuration. The common information may include, for example, D2R transmission resource type information and / or D2R transmission resource common information. The D2R transmission resource common information may be resource configuration information in the frequency domain or time domain of the transmission resource configured according to the D2R transmission resource type. For example, the D2R transmission resource common information may include information regarding the total number of resources, information regarding the number of resources in the frequency domain, information regarding the number of resources in the time domain, etc.

[0097] D2R transmission resource common information may be information that applies commonly to D2R transmissions for a specific resource region, for example. In other words, D2R transmission resource common information may include parameter information to be used commonly in transmissions using D2R scheduled resources. For example, D2R transmission resource common information may include information regarding the repetitive transmission of each D2R transmission signal and / or information regarding the modulation order of each D2R transmission signal and / or information regarding the channel coding rate of each D2R transmission signal and / or information regarding the midamble setting of each D2R transmission signal and / or information regarding the postamble setting of each D2R transmission signal, for D2R transmission resources scheduled in a specific resource region.

[0098] A specific resource interval may be a specific time interval. A specific resource interval may be a specific frequency interval. A specific resource interval may be both a specific time interval and a specific frequency interval. An R node may define one or more pieces of information among the D2R transmission scheduling information for any set of D2R transmission resources as D2R transmission resource common information, and may include them as D2R transmission resource common information in the RD control information. A set of D2R transmission resources may be a set of time resources. A set of D2R transmission resources may be a set of frequency resources. A set of D2R transmission resources may be a set of time resources and a set of frequency resources.

[0099] For example, for multiple D2R transmissions scheduled in different frequency domains within the same time resource interval, the R node may configure at least one of the following as common information: information regarding each repeated transmission of D2R transmission signals, information regarding each modulation order of D2R transmission signals, information regarding each channel coding rate of D2R transmission signals, setting information regarding each midamble of D2R transmission signals, and / or setting information regarding each postamble of D2R transmission signals.

[0100] Node R can instruct Node D to perform a D2R transmission in a resource segment where common information can be applied. Then, Node D can verify the common information included in the L1 control information of the RD control information and reflect the verified common information in the D2R transmission. Node R can schedule a D2R transmission in a resource segment where common information can be applied to Node D. Then, Node D can verify the common information included in the L1 control information of the RD control information and reflect the verified common information in the D2R transmission.

[0101] FIG. 12 is a conceptual diagram showing embodiments of RD control information including common information.

[0102] Referring to FIG. 12, the RD control information may include common information. Each of the D nodes may determine or verify its own D2R transmission scheduling information by combining the common information and the D2R transmission scheduling information for each of the D nodes. The common information may include information regarding the overall resource configuration of the D2R transmission. The common information may include, for example, D2R transmission resource type information and / or D2R transmission resource common information.

[0103] Common D2R transmission resource information may be, for example, information commonly applied to D2R transmission for a specific resource interval. The specific resource interval may be a specific time interval. The specific resource interval may be a specific frequency interval. The specific resource interval may be both a specific time interval and a specific frequency interval. An R node may define one or more pieces of information from among the D2R transmission scheduling information for any set of D2R transmission resources as common D2R transmission resource information, and may include them as common D2R transmission resource information in the RD control information. The resources in the set of D2R transmission resources may be a set of time resources. The set of D2R transmission resources may be a set of frequency resources. The set of D2R transmission resources may be a set of time resources and a set of frequency resources.

[0104] For example, for multiple D2R transmissions scheduled in different frequency domains within the same time resource interval, the R node may configure at least one of the following as common information: information regarding each repeated transmission of D2R transmission signals, information regarding each modulation order of D2R transmission signals, information regarding each channel coding rate of D2R transmission signals, setting information regarding each midamble of D2R transmission signals, and / or setting information regarding each postamble of D2R transmission signals.

[0105] Node R can instruct Node D to perform D2R transmission in a resource section where common information can be applied. Then, Node D can verify the common information included in the upper layer information of the RD control information and reflect the verified common information in the D2R transmission. Node R can schedule D2R transmission in a resource section where common information can be applied to Node D. Then, Node D can verify the common information included in the upper layer information of the RD control information and reflect the verified common information in the D2R transmission.

[0106] [Multiplexing / Multiple Access]

[0107] The R node can multiplex R2D transmission signals. The D node can multiplex D2R transmission signals. R nodes can transmit R2D transmission signals to the D node to establish multiple access to the D node. D nodes can transmit D2R transmission signals to the R node to establish multiple access to the R node. The R node can divide time to transmit R2D transmission signals to the D node at different times. The D node can receive R2D transmission signals from the R node at different times. In this way, if the R node divides time to transmit R2D transmission signals to the D node at different times, the reception complexity of the D node can be minimized. The R node can divide frequency to transmit R2D transmission signals to the D node at different frequencies. The D node can receive R2D transmission signals from the R node at different frequencies. The R node can divide transmission resources using the time division multiple access (TDMA) and / or frequency division multiple access (FDMA) methods and transmit R2D transmission signals using the divided transmission resources.

[0108] Node D can divide time to transmit D2R transmission signals to Node R at different times. Node R can receive D2R transmission signals from Node D at different times. Node D can divide frequency to transmit D2R transmission signals to Node R at different frequencies. Node R can receive D2R transmission signals from Node D at different frequencies. Node D can divide transmission resources using TDMA and / or FDMA methods and transmit D2R transmission signals using the divided transmission resources.

[0109] FIG. 13 is a conceptual diagram showing embodiments of a D2R transmission resource configuration method for transmitting a signal from a D node to an R node.

[0110] Referring to FIG. 13, Node R can transmit an R2D transmission signal to Node D that directs or schedules a single D2R transmission resource. Node D can receive an R2D transmission signal from Node R that directs or schedules a single D2R transmission resource. Node D can determine or identify a single D2R transmission resource based on the D2R transmission signal. Node D can transmit a D2R transmission signal from the determined or identified D2R transmission resource to Node R. Node R can receive a D2R transmission signal from Node D from the D2R transmission resource that directs or schedules Node D. The method in which a single D2R transmission signal directs or schedules a single D2R transmission resource can be referred to as D2R transmission resource type 1.

[0111] FIG. 14 is a conceptual diagram showing embodiments of a D2R transmission resource configuration method for transmitting a signal from a D node to an R node.

[0112] Referring to FIG. 14, Node R can transmit an R2D transmission signal to Node D that directs or schedules time-division D2R transmission resources. Node D can receive an R2D transmission signal from Node R that directs or schedules time-division D2R transmission resources. Node D can determine or identify time-division D2R transmission resources based on the D2R transmission signal. Node D can transmit D2R transmission signals from the determined or identified time-division D2R transmission resources to Node R. Node R can receive D2R transmission signals from Node D from the time-division D2R transmission resources that were directed or scheduled to Node D. A method in which a single D2R transmission signal directs or schedules multiple time-division D2R transmission resources can be referred to as D2R transmission resource type 2.

[0113] FIG. 15 is a conceptual diagram showing embodiments of a D2R transmission resource configuration method for transmitting a signal from a D node to an R node.

[0114] Referring to FIG. 15, Node R can transmit an R2D transmission signal to Node D that directs or schedules frequency-divided D2R transmission resources. Node D can receive an R2D transmission signal from Node R that directs or schedules frequency-divided D2R transmission resources. Node D can determine or identify frequency-divided D2R transmission resources based on the D2R transmission signal. Node D can transmit D2R transmission signals from the determined or identified frequency-divided D2R transmission resources to Node R. Node R can receive D2R transmission signals from Node D from the frequency-divided D2R transmission resources that were directed or scheduled to Node D. A method in which a single D2R transmission signal directs or schedules multiple frequency-divided D2R transmission resources can be referred to as D2R transmission resource type 3.

[0115] FIG. 16 is a conceptual diagram showing embodiments of a D2R transmission resource configuration method for transmitting a signal from a D node to an R node.

[0116] Referring to FIG. 16, Node R can transmit an R2D transmission signal to Node D that directs or schedules time-division and frequency-division D2R transmission resources. Node D can receive an R2D transmission signal from Node R that directs or schedules time-division and frequency-division D2R transmission resources. Node D can determine or identify time-division or frequency-division D2R transmission resources based on the D2R transmission signal. Node D can transmit D2R transmission signals from the determined or identified time-division or frequency-division D2R transmission resources to Node R. Node R can receive D2R transmission signals from Node D from the time-division or frequency-division D2R transmission resources that were directed or scheduled to Node D. A method in which a single D2R transmission signal directs or schedules multiple time-division and frequency-division D2R transmission resources can be referred to as D2R transmission resource type 4.

[0117] The RDCI of the R2D transmission signal may include common information consisting of information about the D2R transmission resource type and / or common information about the D2R transmission resource. The information about the D2R transmission resource type may be information indicating one of D2R transmission resource type 1, D2R transmission resource type 2, D2R transmission resource type 3, or D2R transmission resource type 4.

[0118] The D2R transmission resource common information may include information regarding the total number of configured time domain resources and / or information regarding the total number of frequency domain resources. The R node may transmit an R2D transmission signal to the D node that includes common information consisting of information regarding the D2R transmission resource type and / or the D2R transmission resource common information. The D node may receive an R2D transmission signal from the R node that includes common information consisting of information regarding the D2R transmission resource type and / or the D2R transmission resource common information. The D nodes may identify or determine the total number of D2R transmission possible numbers from the D2R transmission resource common information. The D nodes may identify or determine the total number of possible device IDs included in the RDCI from the identified or determined number of D2R transmission possible numbers.

[0119] In D2R transmission resource type 1, there may be 1 time domain resource and 1 frequency domain resource. In D2R transmission resource type 2, there may be 3 time domain resources and 1 frequency domain resource. In D2R transmission resource type 3, there may be 1 time domain resource and 3 frequency domain resources. In D2R transmission resource type 4, there may be 3 time domain resources and 3 frequency domain resources.

[0120] The D2R transmission resource common information may include information regarding the total number of configured resources. An R node may transmit an R2D transmission signal to a D node that includes common information consisting of information regarding D2R transmission resource types and / or D2R transmission resource common information. A D node may receive an R2D transmission signal from an R node that includes common information consisting of information regarding D2R transmission resource types and / or D2R transmission resource common information. D nodes may identify or determine the total number of D2R transmission resources from the D2R transmission resource common information. D nodes may identify or determine the total number of possible device IDs included in the RDCI from the identified or determined number of D2R transmission resources. In D2R transmission resource type 1, the total resource may be 1. In D2R transmission resource type 2, the total resource may be 3. In D2R transmission resource type 3, the total resource may be 3. In D2R transmission resource type 4, the total resource may be 9.

[0121] D2R resource type information and D2R transmission resource common information can be configured as joint information. This means that in a single scheduling control information field, information indicating the D2R resource type and information indicating the D2R transmission resource common can be configured together depending on the configuration of some bits or combined bits in the joint information bits.

[0122] The R node can instruct each D node on the location of the D2R transmission resource for each D node using an index. Alternatively, the R node can instruct each D node on the location of the D2R transmission resource for each D node using the configuration location of the device ID. The D node can check or determine the configuration status of the D2R transmission resource based on common information. The D node can check the order of the D node's device ID in the DR control information. The order can be sequentially increased in the frequency domain from the central resource to the resource configured by a small frequency shift in the order of negative frequency (or low frequency) or positive frequency (or high frequency). Alternatively, the order can be increased from negative frequency (or low frequency) toward the direction of positive frequency (or high frequency). Alternatively, the order can be increased from positive frequency (or high frequency) toward the direction of negative frequency (or low frequency). The order can be increased in chronological order in the time domain. In D2R transmission resource type 4, the order can be increased first in the frequency domain from the same time domain resource and then increased in the next time domain resource. Alternatively, in D2R transmission resource type 4, the order can be incremented first in the time domain from the same frequency domain resource and then incremented in the next frequency domain resource.

[0123] FIG. 17 is a conceptual diagram showing embodiments of a method for indicating the resources of a signal transmitted from node D to node R.

[0124] Referring to FIG. 17, the R node can generate D2R transmission resource common information including the number of time domain resources and the number of frequency domain resources. The D2R transmission resource common information may be upper layer information. The R node can generate L1 control information including the device IDs of D nodes to transmit D2R transmission signals. The R node can generate other D2R transmission scheduling information related to D2R transmission.

[0125] The R node can transmit an R2D transmission signal to the D node, which includes common D2R transmission resource information, L1 control information, and other D2R transmission scheduling information related to D2R transmission. The D node can receive the R2D transmission signal from the R node. The D node can identify or detect the common D2R transmission resource information in the R2D transmission signal, and can identify or determine the configuration status of the D2R transmission resource from the identified or detected common D2R transmission resource information. The D node can identify or determine the order of the D node's device ID from the L1 control information. The D node can identify or determine the location of the D2R transmission resource according to the identified or determined order of the device IDs. The D node can identify or detect the remaining D2R transmission scheduling information. The D node can transmit a D2R transmission signal from the D2R transmission resource according to the order of the device IDs.

[0126] For example, Node D can verify or determine from common information that the number of time-domain resources may be 4 and the number of frequency-domain resources may be 3. Node D can verify or determine that the number of time-domain resources may be 4 and the number of frequency-domain resources is 3, and thus the D2R transmission resource type is D2R transmission resource type 4. Node D can verify or determine the configuration of a total of 12 D2R transmission resources. Node D can expect that the L1 control information will contain a total of 12 device IDs. For example, the last null device ID in the L1 control information may mean that there is no Node D to schedule for the last resource. Node D can verify or determine the order of Node D's device IDs in the L1 control information. Node D can transmit D2R transmission signals from the D2R transmission resources according to the verified or determined order of device IDs.

[0127] FIG. 18 is a conceptual diagram showing embodiments of a method for indicating the resources of a signal transmitted from node D to node R.

[0128] Referring to FIG. 18, the R node can generate common D2R transmission resource information including the number of time domain resources and the number of frequency domain resources. The common D2R transmission resource information may be common information of upper layer information. The R node can generate information regarding the device IDs of D nodes to transmit D2R transmission signals and resource indices corresponding to each of the device IDs. The information regarding the device IDs and resource indices corresponding to each of the device IDs may be upper layer information. The R node can generate other D2R transmission scheduling information related to D2R transmission.

[0129] The R node can transmit an R2D transmission signal to the D node, which includes common information on D2R transmission resources, device IDs, information on resource indices corresponding to each of the device IDs, and other D2R transmission scheduling information related to D2R transmission. The D node can receive the R2D transmission signal from the R node. The D node can identify or detect the common information on D2R transmission resources from the R2D transmission signal, and can identify or determine the configuration status of the D2R transmission resource from the identified or detected common information on D2R transmission resources. The D node can identify or determine the information regarding the D node's device ID and the resource index corresponding to the device ID from the upper layer information. The D node can identify or determine the location of the D2R transmission resource according to the resource index of the identified or determined device ID. The D node can identify or detect the remaining D2R transmission scheduling information. The D node can transmit a D2R transmission signal from the D2R transmission resource corresponding to the index of the device ID.

[0130] For example, Node D can identify or determine from common information that the number of time domain resources may be 4 and the number of frequency domain resources may be 3. Node D can identify or determine the D2R transmission resource type as D2R transmission resource type 4, as the number of time domain resources may be 4 and the number of frequency domain resources is 3. Node D can identify or determine the configuration of a total of 12 D2R transmission resources. Node D can expect that the L1 control information includes a total of 12 device IDs. Node R and Node D can know the respective indices of the D2R transmission resources according to a predefined method. Node D can identify or determine the location of the D2R transmission resource corresponding to Node D's device ID from the upper layer information. Node D can transmit a D2R transmission signal from the D2R transmission resource corresponding to the index of the D2R transmission resource of the identified or determined device ID.

[0131] Meanwhile, the D node can select a transmission resource according to the configuration order of scheduling information based on the device ID without index information of D2R transmission scheduling, and can transmit a D2R transmission signal using the selected transmission resource.

[0132] The R node can instruct the D nodes on resource configuration in advance. The R node can transmit resource configuration information to the D nodes in advance via an R2D transmission signal. Alternatively, the R node can transmit specified resource configuration conditions to the D nodes for message types under specific conditions. For example, the R node can include the resource configuration information of Msg2 (e.g., common resource information for D2R transmission) within an inventory trigger message and transmit it to the D nodes. The common resource information for D2R transmission may include message type information from the Msg2 R2D transmission. A device that checks the type information may know the resource configuration of the D2R transmission through the D2R transmission resource configuration information included in the inventory trigger message.

[0133] [D2R Transmission Length and Start Time]

[0134] The R node can schedule the transmission times of each D2R transmission signal to be different from each other. The R node can include the transmission start time of each D2R transmission signal in the RDCI. The R node can transmit the RDCI containing the transmission start time of each D2R transmission signal to the D node. The D node can receive the RDCI containing the transmission start time of each D2R transmission signal from the R node. The D node can identify or determine the transmission start location of the D2R transmission signal from the transmission start time information of the D2R transmission signal included in the RDCI. The D node can start the transmission of the D2R transmission signal at the identified or determined transmission start location of the D2R transmission signal.

[0135] In D2R transmission resource type 4, the start times of the D2R transmission signals of the frequency domain resources for the same time domain resource location can be assumed to be the same. The end times of the D2R transmission signals may differ from each other.

[0136] FIG. 19 is a conceptual diagram showing embodiments of a method for setting the transmission length and start time of a signal transmitted from node D to node R.

[0137] Referring to FIG. 19, there may be three D2R transmission resources in the time domain and three in the frequency domain. The black dashed line (1910) may represent a scheduled resource. The hatched box (1920) may represent the actual D2R transmission signal transmitted from the scheduled resource. The transmission lengths of each D2R transmission signal may differ. The D node may assume that the transmission time of each frequency domain D2R transmission resource is the same as the time domain D2R transmission time of the scheduled resource. However, the transmission end time of the D2R transmission signal may differ depending on the scheduling information.

[0138] FIG. 20 is a conceptual diagram showing embodiments of a method for indicating the resources of a signal transmitted from node D to node R.

[0139] Referring to FIG. 20, the R node can generate D2R transmission resource common information including the number of time domain resources and the number of frequency domain resources. The D2R transmission resource common information may be L1 control information. The R node can generate L1 control information including the device IDs of D nodes to transmit the D2R transmission signal.

[0140] The R node can generate timing information indicating the transmission time of each time-domain resource. For example, the transmission start time of the first D2R transmission signal may be T1 time after the reception end time of the R2D transmission signal. T1 may be denoted by X. The unit of T1 may be time or a real number. The unit of X may be a slot, a symbol, etc., or a positive integer. The timing information of the first D2R transmission signal may include T1 and X.

[0141] The transmission start time of the second D2R transmission signal may be T2 times after the reception end time of the R2D transmission signal. T2 may be denoted by Y. The unit of T2 may be time or a real number. The unit of Y may be a slot, symbol, etc., or a positive integer. The timing information of the second D2R transmission signal may include T2 and Y. The transmission start time of the third D2R transmission signal may be T3 times after the reception end time of the R2D transmission signal. T3 may be denoted by Z. The unit of T3 may be time or a real number. The unit of Z may be a slot, symbol, etc., or a positive integer. The timing information of the third D2R transmission signal may include T3 and Z. The R node may generate D2R transmission scheduling information related to other D2R transmissions.

[0142] The R node can transmit an R2D transmission signal to the D node, which includes common information on D2R transmission resources, device IDs, timing information of the D2R transmission signal, and other D2R transmission scheduling information related to D2R transmission. The D node can receive the R2D transmission signal from the R node. The D node can identify or detect the common information on D2R transmission resources in the R2D transmission signal, and can identify or determine the configuration status of the D2R transmission resource from the identified or detected common information on D2R transmission resources. The D node can identify or determine the order of the device IDs of the D node in the L1 control information. The D node can identify or determine the location of the D2R transmission resource according to the identified or determined order of the device IDs. The D node can identify or determine the timing information of the D2R transmission resource according to the order of the device IDs of the D node in the L1 control information. The D node can transmit the D2R transmission signal at the transmission start time according to the timing information of the D2R transmission resource according to the identified or determined order of the device IDs.

[0143] Meanwhile, at the start time of a D2R transmission signal in any one time domain of the scheduling resource, the transmission times of D2R transmission resources in multiple frequency domains may be identical to each other. Additionally, at the start time of a D2R transmission signal in any one time domain of the scheduling resource, the transmission lengths of D2R transmission resources in multiple frequency domains may be identical to each other.

[0144] FIG. 21 is a conceptual diagram showing embodiments of a method for setting the transmission length and start time of a signal transmitted from node D to node R.

[0145] Referring to FIG. 21, there may be three D2R transmission resources in the time domain and three in the frequency domain. The black dashed line (2110) may represent a scheduled resource. The hatched box (2120) may represent the actual D2R transmission signal transmitted from the scheduled resource. The transmission lengths of each D2R transmission signal may be the same. The D2R transmission lengths of the three time domain D2R transmission resource regions may differ from each other. The D node may assume that the transmission time of each frequency domain D2R transmission resource is the same as the time domain D2R transmission time of the scheduled resource. The transmission end times of the D2R transmission signals may be the same.

[0146] The operation of the method according to an embodiment of the present disclosure can be implemented as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes all types of recording devices in which information that can be read by a computer system is stored. Additionally, the computer-readable recording medium may be distributed across networked computer systems, allowing the computer-readable program or code to be stored and executed in a distributed manner.

[0147] In addition, computer-readable recording media may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Program instructions may include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

[0148] Some aspects of the present disclosure have been described in the context of a device, but may also be described according to a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also be described according to a corresponding block or item or a feature of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, at least one of the most important method steps may be performed by such a device.

[0149] In the embodiments, a programmable logic device (e.g., a field-programmable gate array) may be used to perform some or all of the functions of the methods described herein. In the embodiments, the field-programmable gate array may operate with a microprocessor to perform one of the methods described herein. Generally, it is preferable that the methods be performed by some hardware device.

[0150] Although the present disclosure has been described with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present disclosure without departing from the spirit and scope of the present disclosure as set forth in the following claims.

Claims

Claim 1 A method of a first communication node comprising: generating first control information including device identifiers of second communication nodes; generating second control information including scheduling information for the second communication nodes arranged to correspond to the arrangement order of the device identifiers; generating third control information including at least one of information regarding a transmission resource type indicating a multiplexing method of one or more transmission resources for the second communication nodes, transmission resource common information which is resource setting information of the one or more transmission resources configured according to the transmission resource type, or instruction information indicating at least one transmission resource of each of the second communication nodes; transmitting a first signal including the first control information, the second control information, and the third control information to the second communication nodes; and receiving at least one second signal from each of the second communication nodes through the transmission scheduling information of the second control information selected based on the first control information and the instruction information of the third control information selected by the at least one transmission resource. Claim 2 A method of a first communication node according to claim 1, wherein the first control information further includes information regarding the number of device identifiers included in the first control information. Claim 3 A method of a first communication node according to claim 1, wherein the first control information is one of L1 (layer 1) control information or upper layer information, the second control information is the upper layer information, and the third control information is one of the L1 control information or the upper layer information. Claim 4 A method of a first communication node, wherein the transmission resource type is at least one of a first type in which the one or more transmission resources are composed of one time resource and one frequency resource, a second type in which the one or more transmission resources are composed of a plurality of time resources in a time-division method, a third type in which the one or more transmission resources are composed of a plurality of frequency resources in a frequency-division method, or a fourth type in which the one or more transmission resources are composed of a plurality of time resources and a plurality of frequency resources in a time-division method and a frequency-division method, and the transmission resource common information includes at least one of the number of time resources or the number of frequency resources of the one or more transmission resources. Claim 5 A method of a first communication node according to claim 1, wherein the instruction information is at least one of the index of the at least one transmission resource for each of the second communication nodes or the arrangement order of the device identifiers of each of the second communication nodes. Claim 6 A method of a first communication node according to claim 1, wherein the common information of the transmission resource comprises at least one of information for the repeated transmission of the at least one second signal, information for the modulation order of the at least one second signal, information for the channel coding rate of the at least one second signal, information for the midamble setting of the at least one second signal, or information for the postamble setting of the at least one second signal. Claim 7 A method of a first communication node according to claim 1, wherein the first signal comprises at least one of information regarding the start time of the at least one transmission resource or information regarding the transmission length. Claim 8 A method of a second communication node, comprising: receiving a first signal from a first communication node including information regarding device identifiers of the second communication nodes, transmission scheduling information for the second communication nodes arranged to correspond to the arrangement order of the device identifiers, information regarding a transmission resource type indicating a multiplexing method of one or more transmission resources for the second communication nodes, transmission resource common information which is resource setting information of the one or more transmission resources configured according to the transmission resource type, and instruction information indicating at least one transmission resource of each of the second communication nodes in the one or more transmission resources; confirming the transmission scheduling information of the second communication node based on the arrangement order of the second communication nodes in the device identifiers; determining the one or more transmission resources based on the information regarding the transmission resource type and the transmission resource common information; and transmitting a second signal to the first communication node according to the transmission scheduling information through the at least one transmission resource for the second communication node indicated by the instruction information in the one or more transmission resources. Claim 9 A method of a second communication node according to claim 8, wherein the information for the device identifiers is one of L1 (layer 1) control information or upper layer information, the transmission scheduling information is the upper layer information, the information for the transmission resource type is one of the L1 control information or the upper layer information, the transmission resource common information is one of the L1 control information or the upper layer information, and the instruction information is one of the L1 control information or the upper layer information. Claim 10 A method of a second communication node according to claim 8, wherein the transmission resource type is at least one of a first type in which the one or more transmission resources are composed of one time resource and one frequency resource, a second type in which the one or more transmission resources are composed of a plurality of time resources in a time-division method, a third type in which the one or more transmission resources are composed of a plurality of frequency resources in a frequency-division method, or a fourth type in which the one or more transmission resources are composed of a plurality of time resources and a plurality of frequency resources in a time-division method and a frequency-division method, and the transmission resource common information includes at least one of the number of time resources or the number of frequency resources of the one or more transmission resources. Claim 11 A method of a second communication node according to claim 8, wherein the instruction information is one of the index of at least one transmission resource for each of the second communication nodes or the arrangement order of the device identifiers of each of the second communication nodes. Claim 12 A method of a second communication node according to claim 8, wherein the common information of the transmission resource comprises at least one of information for the repeated transmission of the at least one second signal, information for the modulation order of the at least one second signal, information for the channel coding rate of the at least one second signal, information for the midamble setting of the at least one second signal, or information for the postamble setting of the at least one second signal. Claim 13 A method of a second communication node according to claim 8, wherein the first signal comprises at least one of information regarding the start time of the at least one transmission resource or information regarding the transmission length, and the second communication node transmits the second signal to the first communication node according to the transmission length at the start time. Claim 14 A second communication node comprising at least one processor, wherein the at least one processor receives from a first communication node a first signal comprising: information regarding device identifiers of the second communication nodes; transmission scheduling information for the second communication nodes arranged to correspond to the arrangement order of the device identifiers; information regarding a transmission resource type indicating a multiplexing method of one or more transmission resources for the second communication nodes; transmission resource common information which is resource setting information for the one or more transmission resources configured according to the transmission resource type; and instruction information indicating at least one transmission resource of each of the second communication nodes in the one or more transmission resources; confirming the transmission scheduling information of the second communication node based on the arrangement order of the second communication nodes in the device identifiers; determining the one or more transmission resources based on the information regarding the transmission resource type and the transmission resource common information; and causing the second signal to be transmitted to the first communication node according to the transmission scheduling information through the at least one transmission resource for the second communication node indicated by the instruction information in the one or more transmission resources. Claim 15 In claim 14, the transmission resource type is at least one of a first type in which the one or more transmission resources are composed of one time resource and one frequency resource, a second type in which the one or more transmission resources are composed of a plurality of time resources in a time-division method, a third type in which the one or more transmission resources are composed of a plurality of frequency resources in a frequency-division method, or a fourth type in which the one or more transmission resources are composed of a plurality of time resources and a plurality of frequency resources in a time-division method and a frequency-division method, and the transmission resource common information includes at least one of the number of time resources or the number of frequency resources of the one or more transmission resources, a second communication node. Claim 16 In claim 14, the second communication node, wherein the instruction information is at least one of the index of the at least one transmission resource for each of the second communication nodes or the arrangement order of the device identifiers of each of the second communication nodes. Claim 17 In claim 14, the first signal comprises at least one of information regarding the start time of the at least one transmission resource or information regarding the transmission length, and the second communication node transmits the second signal to the first communication node according to the transmission length at the start time.

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