Communication network and method using extended duplex communication

Abstract

To provide a wireless terminal, an access node, and a method, for addressing the allocation and mapping of radio resources for uplink channels in duplex communication operation.SOLUTION: A wireless terminal receives, from a radio access network, both slot format information, including a transmission direction configuration for each symbol in a slot for an uplink (UL) sub-band and enabling information 12-1 and uses the enabling information to enable or disable the transmission direction configuration for at least a portion of the UL sub-band 12-2.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] TECHNICAL FIELD The present technology relates to wireless communications, and in particular to wireless terminals and their operation, including duplex operation. [Background technology]

[0002] Typically, a radio access network exists between a wireless device, such as a user equipment (UE), a mobile phone, a mobile station, or any other device with a radio termination, and a core network (CN). Examples of radio access network types (RAN) include a GSM radio access network (GRAN), GERAN including EDGE packet radio services, a UMTS radio access network (UTRAN), E-UTRAN including Long-Term Evolution (LTE), and g-UTRAN, New Radio (NR).

[0003] A radio access network may comprise one or more access nodes, such as base station nodes that facilitate wireless communication or otherwise provide an interface between wireless terminals and a telecommunications system. Non-limiting examples of base stations may include a NodeB ("NB"), enhanced NodeB ("eNB"), home eNB ("HeNB"), gNB (for New Radio ["NR"] technology systems), or some other similar terminology, depending on the radio access technology type.

[0004] The 3rd Generation Partnership Project ("3GPP") is a group that develops collaboration agreements, such as 3GPP standards, that aim to define globally applicable technical specifications and technical reports for wireless communication systems. Various 3GPP documents can describe certain aspects of radio access networks. The overall architecture of a fifth generation system, e.g., a 5G system, also referred to as "NR" or "New Radio" and "NG" or "Next Generation", is shown in FIG. 1, which is also described in 3GPP TS38.300. The 5G NR network is composed of a Next Generation Radio Access Network (NG RAN) and a 5G Core Network (5GC). As shown, the NGRAN is composed of a gNB (e.g., a 5G base station) and a ng-eNB (i.e., an LTE base station). The Xn interface exists between gNB-gNB, between (gNB)-(ng-eNB) and between (ng-eNB)-(ng-eNB). Xn is the network interface between NG-RAN nodes. Xn-U stands for Xn User Plane Interface, and Xn-C stands for Xn Control Plane Interface. The NG interface exists between the 5GC and the base station (i.e., gNB and ng-eNB). The gNB node provides NR user plane and control plane protocol termination towards the UE and is connected to the 5GC via the NG interface. The 5G New Radio (NR) gNB is connected to the Access and Mobility Management Function (AMF) and User Plane Function (UPF) in the 5G Core Network (5GC).

[0005] Radio transmissions in a direction from the base station to the wireless terminal are referred to as being on the "downlink" (DL) and transmissions in a direction from the wireless terminal to the base station are referred to as being on the "uplink" (UL). As described in more detail herein, transmissions may occur in a frame or subframe configuration that may be conceptualized as a two-dimensional grid. The grid may be configured to have time slots in a first dimension and frequency or subcarriers in a second dimension. Time Division Duplex (TDD) operation occurs when the information of a frame or subframe is divided on a time basis between the uplink and the downlink. In TDD operation, there may be a mapping or allocation of time slots to uplink and downlink transmissions, referred to as a TDD pattern. Frequency Division Duplex (FDD) operation occurs when the information of a frame or subframe is divided on a frequency or subcarrier basis between the uplink and the downlink.

[0006] In dynamic TDD operation, the TDD pattern is configured with a flexible region as shown in FIG. 2. The base station can later convert the flexible region to a DL region or a UL region. Specifically, the base station can indicate the use of the flexible region to the wireless terminal via a DCI format. For example, the base station can indicate the use of the flexible region as a downlink by sending a downlink DCI format used to schedule downlink reception on the flexible region. For example, the base station can indicate the use of the flexible region as an uplink by sending an uplink DCI format used to schedule uplink transmission on the flexible region.

[0007] On the other hand, the base station may indicate the use of the flexible region as downlink, flexible, or uplink via a DCI format that is not used to schedule downlink reception or uplink transmission, also known as DCI format 2_0. This information is useful for semi-static transmission / reception that does not require a scheduling DCI format.

[0008] When Sub-Band Full Duplex (SBFD) operation is introduced, "SBFD" is another usage type where "SBFD" represents simultaneous downlink transmission and uplink reception from the perspective of the base station.

[0009] RAN1 agrees that semi-static UL sub-bands are the baseline. Furthermore, dynamic activation / deactivation of UL sub-bands should be available, at least to control periodic / semi-persistent signals.

[0010] What is needed are methods, apparatus, and / or techniques to address the allocation and / or mapping of radio resources for uplink channels in duplex operation. Summary of the Invention

[0011] In one of its exemplary aspects, the technology disclosed herein relates to a wireless terminal communicating with a radio access network over an air interface. The wireless terminal includes a receiver circuit and a processor circuit. The receiver circuit is configured to receive from the radio access network (1) slot format information including a transmission direction configuration for each symbol in a slot for an uplink (UL) subband, and (2) enabling information. The processor circuit is configured to use the enabling information to perform enabling or disabling of the transmission direction configuration for at least a portion of the UL subband. Methods of operating a wireless terminal according to exemplary embodiments and modes are also disclosed.

[0012] In another of its exemplary aspects, the technology disclosed herein relates to an access node of a radio access network that communicates with a wireless terminal over an air interface. In an exemplary embodiment and mode, the access node includes a transmitter circuit and a receiver circuit. The transmitter circuit is configured to transmit to the wireless terminal (1) slot format information including a transmit direction configuration for each symbol in a slot for an uplink (UL) subband, and (2) enabling information. The receiver circuit is configured to receive from the wireless terminal the information transmitted in the symbols of the uplink subband in accordance with the enabling information. Methods of operating the access node according to exemplary embodiments and modes are also disclosed. [Brief description of the drawings]

[0013] The foregoing and other objects, features, and advantages of the technology disclosed herein will be apparent from the following more particular description of the preferred embodiments, as illustrated in the accompanying drawings, in which reference characters refer to the same parts throughout the various views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the technology disclosed herein. [Figure 1] A diagram of the overall architecture of the 5G New Radio system. [Diagram 2] FIG. 2 is a diagram of an example of a TDD pattern for dynamic TDD operation. [Diagram 3] 1 is a conceptual diagram of a wireless communication system according to one aspect of the exemplary embodiments and modes. [Figure 4] 1 is a diagram illustrating an example of a method for configuring a resource grid according to an aspect of an exemplary embodiment and mode. [Diagram 5] FIG. 1 illustrates an example resource grid configuration according to an aspect of an exemplary embodiment and mode. [Figure 6] A schematic block diagram showing an example configuration of a base station device 3 according to one aspect of an exemplary embodiment and mode. [Figure 7]FIG. 1 is a schematic block diagram illustrating an example configuration of an exemplary wireless terminal, UE, or terminal device, according to one aspect of an exemplary embodiment and mode. [Figure 8] FIG. 1 is a diagram illustrating an example configuration of an SS / PBCH block according to one aspect of an exemplary embodiment and mode. [Figure 9] 1 is a diagram illustrating an example of a monitoring opportunity for a search space set according to an aspect of an exemplary embodiment and mode. [Figure 10] FIG. 1 is a diagram illustrating an example configuration of a time-frequency subband grid for SBFD operation. [Figure 11] A diagram showing an exemplary configuration of DCI format 2_0. [Figure 12] 8 is a flowchart illustrating exemplary representative operations or steps performed by the wireless terminal of FIG. 7. [Figure 13] 7 is a flowchart illustrating exemplary representative operations or steps performed by the base station or access node of FIG. 6. [Figure 14] 11 is a diagram illustrating an exemplary representation of activation information, according to an exemplary embodiment and mode. [Figure 15] 11 is a diagram illustrating another exemplary representation of activation information, according to an exemplary embodiment and mode. [Figure 16] 11 is a diagram illustrating another exemplary representation of activation information, according to an exemplary embodiment and mode. [Figure 17] 1 is a diagram illustrating an example resource allocation for PDSCH in a time-frequency subband grid. [Figure 18] FIG. 1 is a diagram illustrating example elements, including electronic machines that may include wireless terminals, radio access nodes, and core network nodes, according to example embodiments and modes. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] In the following description, for purposes of explanation and not limitation, specific details are set forth, such as specific architectures, interfaces, techniques, etc., to provide a thorough understanding of the technology disclosed herein. However, those skilled in the art will recognize that the technology disclosed herein can be practiced in other embodiments that depart from these specific details. That is, those skilled in the art will be able to devise various configurations that embody the principles of the technology disclosed herein and are within the spirit and scope thereof, although not explicitly described or shown herein. In some instances, detailed descriptions of well-known devices, circuits, and methods have been omitted so as not to obscure the description of the technology disclosed herein with unnecessary detail. All statements herein reciting principles, aspects, and embodiments of the technology disclosed herein, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. In addition, such equivalents are intended to include currently known equivalents as well as equivalents developed in the future, i.e., any elements developed that perform the same function, regardless of structure.

[0015] Thus, those skilled in the art will recognize, for example, that the block diagrams herein may represent conceptual views of illustrative circuits or other functional units embodying the principles of the present technology. Similarly, it will be understood that any flow charts, state diagrams, pseudocode, or the like may be substantially expressed in a computer-readable medium and thus represent various processes that may be performed by such a computer or processor, whether or not a computer or processor is explicitly depicted.

[0016] As used herein, the term "telecommunication system" or "communication system" may refer to any network of devices used to transmit information. A non-limiting example of a telecommunication system is a cellular network or other wireless communication system. As used herein, the term "cellular network" or "cellular radio access network" may refer to a network distributed across multiple cells, each cell being served by at least one fixed-location transceiver, such as a base station. A "cell" may be any communication channel. All or a subset of the cells may be adopted by 3GPP as licensed bands (e.g., frequency bands) used for communication between base stations, such as NodeBs, and UE terminals. A cellular network using a frequency band may include configured cells. A "configured cell" may include a cell that is recognized by a UE terminal and is permitted by a base station to transmit or receive information. Examples of cellular radio access networks include E-UTRAN or New Radio (NR), and any successors thereof (e.g., NUTRAN).

[0017] The Core Network (CN) may include a number of servers, routers, and other equipment. As used herein, the term "core network" may refer to a device, a group of devices, or a subsystem in a telecommunications network that provides services to users of the telecommunications network. Examples of services provided by the Core Network include aggregation, authentication, call switching, service paging, gateway to other networks, etc. For example, the Core Network (CN) may comprise one or more management entities, which may be an Access and Mobility Management Function (AMF).

[0018] As used herein, for an IDLE mode UE, a "serving cell" is a cell on which the idle mode wireless terminal is camped. See, e.g., 3GPP TS 38.304. For a UE in RRC_CONNECTED that is not configured with Carrier Aggregation (CA) / Dual Connectivity (DC), there is only one serving cell, including the primary cell. For a UE in RRC_CONNECTED that is configured with CA / DC, the term "serving cell" is used to denote the set of cells that includes the special cell(s) and all secondary cells. See, e.g., 3GPP TS 38.331.

[0019] floor(CX) represents the floor function of the real number CX. For example, floor(CX) may be a function that provides the largest integer in a range that does not exceed the real number CX. ceil(DX) represents the ceiling function for the real number DX. For example, ceil(DX) may be a function that provides the smallest integer in a range that is equal to or greater than the real number DX. mod(EX,FX) represents a function that provides the remainder obtained by dividing EX by FX, which is exp(GX)=e^GX, where e is Napier's constant. (HX)^(IX) represents HX raised to the power of IX.

[0020] In a wireless communication system according to an aspect of an exemplary embodiment and mode, OFDM (Orthogonal Frequency Division Multiplex) is used. An OFDM symbol is a time domain unit of OFDM. The OFDM symbol is converted to a baseband signal in baseband signal generation. In the downlink, at least CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplex) is used. In the uplink, CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplex) is used. DFT-s-OFDM is provided by applying transform precoding to CP-OFDM. CP-OFDM is OFDM using CP (Cyclic Prefix).

[0021] 3 is a conceptual diagram of a wireless communication system according to one aspect of an exemplary embodiment and mode. In FIG. 3, the wireless communication system includes at least terminal devices 1A-1C and a base station device 3 (BS#3: base station #3). Hereinafter, the terminal devices 1A-1C are also referred to as terminal device 1 (UE#1: user equipment #1).

[0022] The base station device 3 may be configured to include one or more transmitting devices, for example, a transmitting device, a receiving device, a transmitting point, and a receiving point. When the base station device 3 is configured by multiple transmitting devices, each of the multiple transmitting devices may be located at a different position.

[0023] The base station device 3 can provide one or more serving cells. A serving cell can be defined as a set of resources used for wireless communication. A serving cell is also called a cell.

[0024] A serving cell may be configured to include one downlink component carrier (downlink carrier) and / or one uplink component carrier (uplink carrier). A serving cell may be configured to include two or more downlink component carriers and / or two or more uplink component carriers. A downlink component carrier and an uplink component carrier are also referred to as a component carrier (carrier).

[0025] For example, one component carrier may be associated with one or more resource grids. size,u grid,x N RB sc The resource grid contains subcarriers with index N start,u grid Start with a common resource block with index N start ,u grid The common resource block having N subframe,u symb It contains OFDM symbols. The subscript x indicates the transmission direction, either downlink or uplink. One resource grid is associated with an antenna port p, a subcarrier spacing configuration u, and a transmission direction x. The subcarrier spacing configuration u is also referred to as numerology.

[0026] N size,u grid,x and N start,u gridis given based on a higher layer parameter (e.g., referred to as higher layer parameter CarrierBandwidth). The higher layer parameter CarrierBandwidth is used to define one or more SCS (subcarrier spacing) specific carriers. Thus, one resource grid corresponds to one SCS specific carrier. Furthermore, one component carrier may be associated with one or more SCS specific carriers. The higher layer parameter CarrierBandwidth may be a common parameter or a UE specific parameter. For each SCS specific carrier, a subcarrier spacing configuration u is associated.

[0027] Tables 1A and 1B show a table of subcarrier spacing configurations u and number of OFDM symbols per slot N according to one aspect of the exemplary embodiment and mode. slot symb In Table 1A, for example, when the subcarrier spacing configuration u is set to 2 and the CP configuration is set to normal CP (normal cyclic prefix), N slot symb =14, N frame,u slot =40, N subframe,u slot =4. ----------------------------------------------------------------------------------------------------------------------------------------------------------

[0028] [Table 1] ----------------------------------------------------------------------------------------------------------------------------------------------------------

[0029] Further, in Table 1B, for example, the subcarrier spacing If configuration u is set to 2 and CP configuration is set to Extended CP (Extended Cyclic Prefix), then N slot symb =12, N frame,u slot =40, N subframe,u slot =4. ----------------------------------------------------------------------------------------------------------------------------------------------------------

[0030] [Table 2] ----------------------------------------------------------------------------------------------------------------------------------------------------------

[0031] In a wireless communication system according to an aspect of the exemplary embodiment and mode, a time unit T is used to represent the length of the time domain. c The time unit T is used. c is 1 / (df max * N f) is calculated by df max represents 480kHz. f represents 4096. The constant k is df max * N f / (df ref N f,ref )=64. df ref represents 15kHz. f,ref represents the number 2048.

[0032] Length T f =(df max N f / 100) * T s A radio frame (system frame, frame) of T = 10 ms is defined in the time domain. One radio frame is configured to include 10 subframes. The subframe length T sf is (df max N f / 1000)T s = 1 ms. The number of OFDM symbols per subframe, N subframe,u symb is N slot symb N subframe,u slot It is calculated by:

[0033] A time domain index is provided, e.g., slot index n u s is 0 to N subframe,u slot The slot index n is an integer value in the range -1 to -1, and is provided in ascending order of the time domain within a subframe. u s,f is 0 to N frame,u slot The integer values ​​range from -1 to -1 and are provided in ascending order of time domain within the radio frame.

[0034] The slots are N consecutive slot symb It consists of OFDM symbols.

[0035] FIG. 4 illustrates an example of a method for configuring a resource grid according to one aspect of an exemplary embodiment and mode. The horizontal axis of FIG. 4 indicates the frequency domain. FIG. 4 illustrates an example of a resource grid configuration for a subcarrier spacing configuration u=u1 in a component carrier 300 and an example of a resource grid configuration for a subcarrier spacing configuration u=u2 in a component carrier. In FIG. 4, it is assumed that u1=u2-1, but various aspects of this embodiment are not limited to the condition of u1=u2-1.

[0036] 4, the component carrier 300 is a band having a predetermined width in the frequency domain. However, various aspects of this embodiment are not limited to the component carrier 300 being a band. In another example, the component carrier 300 may be a virtual concept associated with resource grids 3001 and 3002.

[0037] A point 3000 is an identifier for identifying a subcarrier. The point 3000 is also referred to as point A. A common resource block (CRB) set 3100 is a set of common resource blocks related to the subcarrier spacing configuration u1.

[0038] Within the common resource block set 3100, the common resource block that includes the point 3000 (the block indicated by the diagonal upper right line in FIG. 4) is also referred to as the reference point of the common resource block set 3100. The reference point of the common resource block set 3100 may be the common resource block with index 0 in the common resource block set 3100.

[0039] The offset 3011 is an offset from the reference point of the common resource block set 3100 to the reference point of the resource grid 3001. The offset 3011 is indicated by the number of common resource blocks for the subcarrier spacing configuration u1. The resource grid 3001 is an Nth subcarrier spacing configuration starting from the reference point of the resource grid 3001. size,ugrid1,x Contains common resource blocks.

[0040] The offset 3013 is the distance from the reference point of the resource grid 3001 to the reference point of the BWP (bandwidth portion) 3003 of index i1 (N start,u BWP,i1 ).

[0041] The common resource block set 3200 is a set of common resource blocks for the subcarrier spacing configuration u2.

[0042] The common resource block that includes the point 3000 in the common resource block set 3200 (the block indicated by the shading in the upper left corner of FIG. 4) is also referred to as the reference point of the common resource block set 3200. The reference point of the common resource block set 3200 may be the common resource block with index 0 in the common resource block set 3200.

[0043] The offset 3012 is the offset from the reference point of the common resource block set 3200 to the reference point of the resource grid 3002. The offset 3012 is indicated by the number of common resource blocks for the subcarrier spacing configuration u=u2. The resource grid 3002 is N size,u grid2,x Contains common resource blocks.

[0044] The offset 3014 is the distance from the reference point of the resource grid 3002 to the reference point of the BWP 3004 with index i2 (N start,u BWP,i2 ).

[0045] 5 is a diagram illustrating an example of a resource grid 3001 configuration according to one aspect of an exemplary embodiment and mode. In the resource grid of FIG. 5, the horizontal axis represents OFDM symbol index l. sym The vertical axis represents the subcarrier index k sc The resource grid 3001 issize,u grid1, xN RB sc Including subcarriers, N subframes,u symb Contains the OFDM symbol. Subcarrier index k sc and OFDM symbol index l in the resource grid sym The resource specified by is also called a resource element (RE).

[0046] Resource Block (RB) is N RB sc It includes consecutive subcarriers. The resource block is a general term for a common resource block (CRB), a physical resource block (PRB), and a virtual resource block (VRB). For example, N RB sc can be 12.

[0047] A resource block unit is a set of resources corresponding to one OFDM symbol in one resource block, i.e., one resource block unit includes 12 resource elements corresponding to one OFDM symbol in one resource block.

[0048] The common resource blocks of subcarrier spacing configuration u are indexed in ascending order in the frequency domain from 0 within the common resource block set. The common resource block with index 0 of subcarrier spacing configuration u contains (or collides with, coincides with) the subcarrier corresponding to point 3000. The index n of the common resource block for subcarrier spacing configuration u u CRB is n u CRB =ceil(k sc / N RB sc ) relationship is satisfied. k scA subcarrier with .DELTA..times ...

[0049] The physical resource blocks for subcarrier spacing configuration u are indexed in ascending order in the frequency domain within the BWP starting from 0. The index n of the physical resource block for subcarrier spacing configuration u u PRB is n u CRB =n u PRB +N start,u BWP,i The relationship of N start,u BWP,i denotes the reference point of the BWP with index i.

[0050] A BWP is defined as a subset of common resource blocks in the resource grid. start,u BWP,i N starting in size,u BWP,i The BWP of a downlink component carrier is also referred to as a downlink BWP, and the BWP of an uplink component carrier is also referred to as an uplink BWP.

[0051] The antenna ports are defined such that a channel on which a symbol on an antenna port is conveyed can be inferred from a channel on which another symbol on the same antenna port is conveyed. For example, the channel may correspond to a physical channel. For example, the symbol may correspond to an OFDM symbol. For example, the symbol may correspond to a resource block unit. For example, the symbol may correspond to a resource element.

[0052] Two antenna ports are said to be Quasi Co-Located (QCL) if the large-scale characteristics of the channel through which symbols on one antenna port are conveyed can be inferred from the channel through which symbols on the other antenna port are conveyed. The large-scale characteristics include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters.

[0053] Carrier aggregation is a framework for communication using multiple aggregated serving cells. In other words, carrier aggregation can be understood as a framework for communication using multiple aggregated component carriers.

[0054] Fig. 6 is a schematic block diagram showing an example configuration of an access node or base station device 3 according to one aspect of an exemplary embodiment and mode. As shown in Fig. 6, the base station device 3 includes a radio transceiver unit (physical layer processing unit) 30 and part or all of a control unit 34. The radio transceiver unit 30 includes an antenna unit 31, an RF unit 32 (radio frequency unit 32), and part or all of a baseband unit 33. The control unit 34 includes a media access control layer processing unit 35 and part or all of a radio resource control (RRC) layer processing unit 36.

[0055] The wireless transceiver 30 includes a wireless transmitter 30a and a part or all of a wireless receiver 30b. The configuration of the baseband unit 33 included in the wireless transmitter 30a and the configuration of the baseband unit 33 included in the wireless receiver 30b may be the same as or different from each other. The configuration of the RF unit 32 included in the wireless transmitter 30a and the configuration of the RF unit 32 included in the wireless receiver 30b may be the same as or different from each other. The configuration of the antenna unit 31 included in the wireless transmitter 30a and the configuration of the antenna unit 31 included in the wireless receiver 30b may be the same as or different from each other.

[0056] The control unit 34 provides downlink data (or transport blocks) to the radio transceiver unit 30 (or the radio transmitter unit 30a). The control unit 34 performs processing of a media access control (MAC) layer, a packet data convergence protocol layer (PDCP layer), a radio link control layer (RLC layer), and / or an RRC layer.

[0057] The control unit 34 includes a media access control layer processing unit 35 which executes processing of the MAC layer.

[0058] The radio resource control layer processing unit 36 ​​included in the control unit 34 executes processes of the RRC layer. The radio resource control layer processing unit 36 ​​manages various configuration information / parameters (RRC parameters) of the terminal device 1.

[0059] The control unit 34 may also include a slot format information memory 37 and an activation information memory 38 having the functionality described herein. The slot format information memory 37 may store slot format information, such as information derived from the content of downlink control information. The activation information memory 38 may store information regarding how activation of the transmission direction configuration for at least a portion of the UL subband should be provided to the terminal device 1, also known as wireless terminal 1. As described below, such activation information may be reflected in such manner as, for example, the content of the slot format information, the manner of scrambling of the cyclic redundancy check field of the slot format information. Furthermore, the slot format information stored in the slot format information memory 37 may either be received by the base station 3 from the core network or elsewhere, or may be generated at the base station 3 for storage in the slot format information memory 37 and use by the base station 3. Similarly, the activation information stored in the activation information memory 38 may either be received by the base station 3 from the core network or elsewhere, or may be generated at the base station 3 for storage in the activation information memory 38 and use by the base station 3.

[0060] Various functions of the base station 3 may be performed by one or more processors 39, also referred to herein as base station or access node processor circuitry. For example, the base station processor(s) 39 may include, or at least partially constitute, portions of the control section 34, the baseband section 33, and possibly the RF section 32.

[0061] The wireless transceiver unit 30 (or the wireless transmitter unit 30a) performs processing such as encoding and modulation. The wireless transceiver unit 30 (or the wireless transmitter unit 30a) generates a physical signal by encoding and modulating downlink data. The wireless transceiver unit 30 (or the wireless transmitter unit 30a) converts the physical signal into a baseband signal by baseband signal generation. The wireless transceiver unit 30 (or the wireless transmitter unit 30a) transmits the baseband signal to the terminal device 1 via a radio frequency. The wireless transceiver unit 30 (or the wireless transmitter unit 30a) may place the baseband signal on a component carrier and transmit the baseband signal to the terminal device 1.

[0062] The wireless transceiver unit 30 (or the wireless receiver unit 30b) performs processes such as demodulation and decoding. The wireless transceiver unit 30 (or the wireless receiver unit 30b) separates, demodulates, and decodes the received physical signal, and provides the decoded information to the control unit 34. The wireless transceiver unit 30 (or the wireless receiver unit 30b) can execute a channel access procedure before transmitting the physical signal.

[0063] The RF unit 32 demodulates the physical signal received via the antenna unit 31 into an analog signal and / or removes unnecessary frequency components. The RF unit 32 provides the processed analog signal to the baseband unit 33.

[0064] The baseband unit 33 converts the analog signal input from the RF unit 32 into a baseband signal. The baseband unit 33 separates a portion corresponding to a cyclic prefix (CP) from the baseband signal. The baseband unit 33 performs a fast Fourier transform (FFT) on the baseband signal from which the CP has been removed.

[0065] The baseband unit 33 performs an inverse fast Fourier transform (IFFT) on the downlink data to generate OFDM symbols, adds a CP to the generated OFDM symbols, generates a baseband signal, and converts the baseband signal into an analog signal. The baseband unit 33 provides the analog signal to the RF unit 32.

[0066] The RF unit 32 removes unnecessary frequency components from the analog signal input from the baseband unit 33, up-converts the analog signal to a radio frequency, and transmits it via the antenna unit 31. The RF unit 32 may have a function of controlling transmission power. The RF unit 32 is also referred to as a transmission power control unit.

[0067] One or more serving cells are configured for the terminal device 1.

[0068] There are different types of serving cells, for example PCell (primary cell), PSCell (primary SCG cell), and SCell (secondary cell).

[0069] The PCell is a serving cell included in an MCG (master cell group). The PCell is a cell (implemented cell) in which the terminal device 1 executes an initial connection establishment procedure or a connection re-establishment procedure.

[0070] The PSCell is a serving cell included in an SCG (Secondary Cell Group). The PSCell is a serving cell to which random access is performed by the terminal device 1 in a synchronous reconfiguration procedure (synchronous reconfiguration).

[0071] An SCell may be included in either an MCG or an SCG.

[0072] A serving cell group (cell group) is a designation that includes at least an MCG and an SCG. A serving cell group may include one or more serving cells. The serving cells included in a serving cell group may be operated by carrier aggregation.

[0073] One or more downlink BWPs may be configured for each serving cell (or each downlink component carrier). One or more uplink BWPs may be configured for each serving cell (or each uplink component carrier).

[0074] Among one or more downlink BWPs configured for a serving cell (or a downlink component carrier), one downlink BWP may be configured as an active downlink BWP (or one downlink BWP may be activated). Among one or more uplink BWPs configured for a serving cell (or an uplink component carrier), one uplink BWP may be configured as an active uplink BWP (or one uplink BWP may be activated).

[0075] The PDSCH, PDCCH, and CSI-RS may be received in an active downlink BWP. The terminal device 1 may receive the PDSCH, PDCCH, and CSI-RS in the active downlink BWP. The PUCCH and PUSCH may be sent on an active uplink BWP. The terminal device 1 may transmit the PUCCH and PUSCH in the active uplink BWP. The active downlink BWP and the active uplink BWP are also referred to as active BWPs.

[0076] The PDSCH, PDCCH, and CSI-RS may not be received in a downlink BWP other than the active downlink BWP. The terminal device 1 may not receive the PDSCH, PDCCH, and CSI-RS in a downlink BWP other than the active downlink BWP. The PUCCH and PUSCH may not be transmitted in an uplink BWP other than the active uplink BWP. The terminal device 1 may not transmit the PUCCH and PUSCH in an uplink BWP other than the active uplink BWP.

[0077] The switching of the downlink BWP deactivates the active downlink BWP and activates one of the downlink BWPs other than the active downlink BWP. The switching of the downlink BWP may be controlled by a BWP field included in the downlink control information. The switching of the downlink BWP may be controlled based on higher layer parameters.

[0078] The switching of the uplink BWP is used to deactivate the active uplink BWP and activate any uplink BWP other than the active uplink BWP. The switching of the uplink BWP may be controlled by the BWP field included in the downlink control information. The switching of the uplink BWP may be controlled based on higher layer parameters.

[0079] Among one or more downlink BWPs configured for a serving cell, no more than one downlink BWP may be configured as an active downlink BWP at a time. For a serving cell, at most one downlink BWP may be active at a time.

[0080] Among one or more uplink BWPs configured for a serving cell, no more than one uplink BWP may be configured as an active uplink BWP at a time. For a serving cell, one uplink BWP may be active at a time.

[0081] 7 is a schematic block diagram illustrating an example configuration of an exemplary wireless terminal, also known as a UE or terminal device 1, according to one aspect of an exemplary embodiment and mode. As shown in FIG. 7, terminal device 1 includes a radio transceiver unit (physical layer processing unit) 10 and some or all of a control unit 14. Radio transceiver unit 10 includes an antenna unit 11, an RF unit 12, and some or all of a baseband unit 13. Control unit 14 includes a media access control layer processing unit 15 and some or all of a radio resource control layer processing unit 16.

[0082] The wireless transceiver 10 includes a part or all of a wireless transmitter 10a and a wireless receiver 10b. The wireless transmitter 10a may also be referred to as a wireless terminal transmitter circuit, and the wireless receiver 10b may also be referred to as a wireless terminal receiver circuit. The configuration of the baseband unit 13 included in the wireless transmitter 10a and the configuration of the baseband unit 13 included in the wireless receiver 10b may be the same or different. The configuration of the RF unit 12 included in the wireless transmitter 10a and the configuration of the RF unit 12 included in the wireless receiver 10b may be the same or different. The configuration of the antenna unit 11 included in the wireless transmitter 10a and the configuration of the antenna unit 11 included in the wireless receiver 10b may be the same or different.

[0083] The control unit 14 provides uplink data (or a transport block) to the radio transceiver unit 10 (or the radio transmitter unit 10a). The control unit 14 executes processing of the MAC layer, the packet data integration protocol layer, the radio link control layer, and / or the RRC layer.

[0084] The control unit 14 may also include a slot format information controller 17 and an enable controller 18. The slot format information controller 17 may be operative to interpret slot format information received from the base station 3 to ascertain a transmission direction configuration, in particular a transmission direction configuration for each symbol in a slot for an uplink (UL) subband. The enable controller 18 may be operative to perform an enable operation on the transmission direction configuration for the UL subband. For example, the enable controller 18 uses the enable information to perform an enable or disable of the transmission direction configuration for at least a portion of the UL subband.

[0085] As used herein, "enabled" means that the affected symbols of the UL subband may be used for the uplink, whereas "disabled" means that the UL subband is not used for the uplink in the slot / symbol. In the case of disabled, the wireless terminal defaults to a directional configuration if the UL subband is not configured. For example, (1) if a slot is configured with a UL subband and the slot is "downlink", "disabled" implies that the UE follows a "downlink" behavior, and (2) if a slot is configured with a UL subband and the slot is "flexible", "disabled" implies that the UE follows a "flexible" behavior.

[0086] Various functions of the wireless terminal 1 may be performed by one or more processors 19, also referred to herein as a wireless terminal or terminal processor circuitry. For example, the wireless terminal processor(s) 19 may include or at least partially constitute portions of the control section 14, the baseband section 13, and possibly the RF section 12.

[0087] The control unit 14 includes a media access control layer processing unit 15 which executes processing of the MAC layer.

[0088] The radio resource control layer processing unit 16 included in the control unit 14 executes the process of the RRC layer. The radio resource control layer processing unit 16 manages various configuration information / parameters (RRC parameters) of the terminal device 1. The radio resource control layer processing unit 16 configures the RRC parameters based on an RRC message received from the base station device 3.

[0089] The wireless transceiver unit 10 (or the wireless transmitter unit 10a) performs processing such as encoding and modulation. The wireless transceiver unit 10 (or the wireless transmitter unit 10a) generates a physical signal by encoding and modulating uplink data. The wireless transceiver unit 10 (or the wireless transmitter unit 10a) converts the physical signal into a baseband signal by baseband signal generation. The wireless transceiver unit 10 (or the wireless transmitter unit 10a) transmits the baseband signal to the base station device 3 via a radio frequency. The wireless transceiver unit 10 (or the wireless transmitter unit 10a) may place the baseband signal on a BWP (active uplink BWP) and transmit the baseband signal to the base station device 3.

[0090] The wireless transceiver unit 10 (or the wireless receiver unit 10b) performs processes such as demodulation and decoding. The wireless transceiver unit 10 (or the wireless receiver unit 10b) can receive physical signals in the BWP (active downlink BWP) of the serving cell. The wireless transceiver unit 10 (or the wireless receiver unit 10b) separates, demodulates, and decodes the received physical signals, and provides the decoded information to the control unit 14. The wireless transceiver unit 10 (or the wireless receiver unit 10b) can perform a channel access procedure before transmitting the physical signals.

[0091] The RF unit 12 demodulates the physical signal received via the antenna unit 11 into an analog signal and / or removes unnecessary frequency components. The RF unit 12 provides the processed analog signal to the baseband unit 13.

[0092] The baseband unit 13 converts the analog signal input from the RF unit 12 into a baseband signal. The baseband unit 13 separates a portion corresponding to the CP from the baseband signal, and performs a fast Fourier transform on the baseband signal from which the CP has been removed.

[0093] The baseband unit 13 performs an inverse fast Fourier transform on the uplink data to generate OFDM symbols, adds a CP to the generated OFDM symbols, generates a baseband signal, and converts the digital signal into an analog signal. The baseband unit 13 provides the analog signal to the RF unit 12.

[0094] The RF unit 12 removes unnecessary frequency components from the analog signal input from the baseband unit 13, up-converts the analog signal to a radio frequency, and transmits it via the antenna unit 11. The RF unit 12 may have a function of controlling transmission power. The RF unit 12 is also called a transmission power control unit.

[0095] The physical signals are explained below.

[0096] The physical signal is a general term for a downlink physical channel, a downlink physical signal, an uplink physical channel, and an uplink physical channel. The physical channel is a general term for a downlink physical channel and an uplink physical channel.

[0097] An uplink physical channel corresponds to a set of resource elements carrying information originating from a higher layer and / or uplink control information. The uplink physical channel is transmitted by a terminal device 1. The uplink physical channel is received by a base station device 3. In a wireless communication system according to an aspect of an exemplary embodiment and mode, some or all of a PUCCH (Physical Uplink Control CHannel), a PUSCH (Physical Uplink Shared CHannel), and a PRACH (Physical Random Access CHannel) may be used.

[0098] The PUCCH is transmitted to distribute (transmit, convey) uplink control information. The terminal device 1 transmits the PUCCH in which the uplink control information is arranged. The base station device 3 receives the PUCCH in which the uplink control information is arranged.

[0099] The uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) includes some or all of channel state information (CSI), scheduling request (SR), and hybrid automatic repeat request ACKnowledgement (HARQ-ACK) information.

[0100] The HARQ-ACK information indicates a HARQ-ACK status corresponding to a transport block (TB: Transport Block, MAC PDU: Media Access Control Protocol Data Unit, DL-SCH: Downlink Shared Channel, UL-SCH: Uplink Shared Channel, PDSCH: Physical Downlink Shared Channel, PUSCH: Physical Uplink Shared Channel). The HARQ-ACK status is either ACK (positive acknowledgement) or NACK (negative acknowledgement). ACK indicates that the transport block has been successfully decoded. NACK indicates that the transport block has not been successfully decoded. The HARQ-ACK information may include a HARQ-ACK codebook that includes one or more HARQ-ACK statuses (or HARQ-ACK bits).

[0101] The HARQ-ACK status may indicate an ACK or NACK corresponding to one CBG (Code Block Group) included in a transport block.

[0102] The scheduling request is used to request UL-SCH resources for the initial transmission. The scheduling request is used to indicate either a positive SR or a negative SR. The fact that the scheduling request indicates a positive SR is also referred to as "a positive SR is transmitted". A positive SR indicates that a UL-SCH resource for the initial transmission is requested by the terminal device 1. The fact that the scheduling request bit indicates a negative SR is also referred to as "a negative SR is transmitted". A negative SR indicates that a UL-SCH resource for the initial transmission is not requested by the terminal device 1.

[0103] The channel state information may include at least some or all of a Channel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), and a Rank Indicator (RI). The CQI is an indicator related to the channel quality (e.g., propagation quality) or physical channel quality, the PMI is an indicator related to the precoder, and the RI is an indicator related to the transmission rank (or number of transmission layers).

[0104] The channel state information is provided based on reception of one or more physical signals (eg, one or more CSI-RS). The channel state information is determined by the terminal device 1 based on reception of the one or more physical signals.

[0105] The PUSCH is used to transmit uplink data (transport block) and / or uplink control information. The terminal device 1 transmits the PUSCH in which the uplink data (transport block) and / or the uplink control information is arranged. The base station device 3 receives the PUSCH in which the uplink data (transport block) and / or the uplink control information is arranged.

[0106] The PRACH is used to transmit a random access preamble. The sequence of the PRACH is x u,v (n) is x u,v (n)=xu (mod(n+C v ,L RA )) is defined by x u x may be a ZC sequence (Zadoff-Chu sequence). u x u =exp(-jpui(i+1) / L RA ), where j is the imaginary unit. p is the ratio of circumference to circumference. C v L corresponds to the cyclic shift of the PRACH. RA L corresponds to the length of the PRACH. RA can be 839 or 139 or another value. i ranges from 0 to L RA where u is an integer in the range of -1. u is a sequence index of the PRACH. The terminal device 1 transmits the PRACH. The base station device 3 receives the PRACH.

[0107] For a given PRACH opportunity, 64 random access preambles are defined. The random access preambles are determined by the cyclic shift C v and is specified (determined, given) based on the sequence index u of the PRACH.

[0108] The uplink physical signal corresponds to a set of resource elements. The uplink physical signal may not carry information generated in a higher layer. The terminal device 1 transmits the uplink physical signal. The base station device 3 receives the uplink physical signal. In a wireless communication system according to an aspect of an exemplary embodiment and mode, at least some or all of a UL DMRS (UpLink Demodulation Reference Signal), a SRS (Sounding Reference Signal), and a UL PTRS (UpLink Phase Tracking Reference Signal) may be used.

[0109] UL DMRS is a general term for PUSCH DMRS and PUCCH DMRS.

[0110] The set of antenna ports for the DMRS (DMRS associated with the PUSCH, DMRS included in the PUSCH, DMRS corresponding to the PUSCH) for the PUSCH may be given based on the set of antenna ports for the PUSCH. For example, the set of DMRS antenna ports for the PUSCH may be the same as the set of antenna ports for the PUSCH.

[0111] The transmission of the PUSCH and the transmission of the DMRS for the PUSCH may be indicated (or scheduled) by one DCI format. The PUSCH and the DMRS for the PUSCH are collectively referred to as the PUSCH.

[0112] The set of antenna ports for DMRS for PUCCH (DMRS associated with PUCCH, DMRS included in PUCCH, DMRS corresponding to PUCCH) may be the same as the set of antenna ports for PUCCH.

[0113] The transmission of the PUCCH and the transmission of the DMRS for the PUCCH may be indicated (or scheduled) by one DCI format. The placement of the PUCCH on resource elements (resource element mapping) and / or the placement of the DMRS within the resource elements for the PUCCH may be provided by one PUCCH format. The PUCCH and the DMRS for the PUCCH are collectively referred to as PUCCH.

[0114] A downlink physical channel corresponds to a set of resource elements carrying information originating from a higher layer and / or downlink control information. The base station device 3 transmits the downlink physical channel. The terminal device 1 receives the downlink physical channel. In a wireless communication system according to an aspect of an exemplary embodiment and mode, some or all of a PBCH (Physical Broadcast Channel), a PDCCH (Physical Downlink Control Channel), and a PDSCH (Physical Downlink Shared Channel) may be used.

[0115] The PBCH is used to transmit a Master Information Block (MIB) and / or physical layer control information. The physical layer control information is a type of downlink control information. The terminal device 1 receives the PBCH. The base station device 3 transmits the PBCH. The physical layer control information is also referred to as a PBCH payload.

[0116] The physical layer control information is composed of 8 bits. The physical layer control information is composed of some or all of 0A to 0D. 0A is radio frame information. 0B is half radio frame information (half system frame information). 0C is SS / PBCH block index information. 0D is subcarrier offset information.

[0117] The radio frame information is used to indicate the radio frame in which the PBCH is transmitted.

[0118] The half radio frame information is used to indicate whether the PBCH is transmitted in the first 5 subframes or the second 5 subframes of the radio frame in which the PBCH is transmitted.

[0119] The SS / PBCH block index information is used to indicate the SS / PBCH block index.

[0120] The subcarrier offset information is used to indicate a subcarrier offset. The subcarrier offset information is used to indicate a difference between the first subcarrier in which the PBCH is located and the first subcarrier in which the control resource set having index 0 is located.

[0121] The PDCCH is used to transmit downlink control information (DCI). The terminal device 1 receives the PDCCH in which the downlink control information is arranged. The base station device 3 transmits the PDCCH in which the downlink control information is arranged.

[0122] The downlink control information is formatted according to a DCI format. There may be several DCI format types, such as DCI format 0_0, DCI format 0_1, DCI format 1_0, DCI format 1_1, DCI format 2_0, etc., described herein as non-limiting examples.

[0123] The DCI format is a general term for DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1. The uplink DCI format is a general term for DCI format 0_0 and DCI format 0_1. The downlink DCI format is a general term for DCI format 1_0 and DCI format 1_1.

[0124] DCI format 0_0 is used to schedule a PUSCH of a cell (or a PUSCH arranged on a cell). DCI format 0_0 includes some or all of fields 1A to 1E. 1A is a DCI format identification field (an identifier field for a DCI format). 1B is a frequency domain resource allocation field (FDRA field). 1C is a time domain resource allocation field (TDRA field). 1D is a frequency hopping flag field. 1E is a Modulation-and-Coding-Scheme field (MCS field).

[0125] The DCI format identification field in DCI format 0_0 indicates whether the DCI format including the DCI format identification field is an uplink DCI format or a downlink DCI format. The DCI format identification field included in DCI format 0_0 indicates 0 (or indicates that DCI format 0_0 is an uplink DCI format).

[0126] The frequency domain resource allocation field included in DCI format 0_0 is used to indicate the allocation of frequency resources for the PUSCH scheduled by DCI format 0_0.

[0127] The time domain resource allocation field included in DCI format 0_0 is used to indicate the allocation of time resources for the PUSCH scheduled by DCI format 0_0.

[0128] The frequency hopping flag field in DCI format 0_0 is used to indicate whether frequency hopping is applied to the PUSCH scheduled by DCI format 0_0.

[0129] The MCS field included in DCI format 0_0 is used to indicate a modulation scheme for the PUSCH scheduled by DCI format 0_0 and / or a part or all of a target coding rate for the PUSCH. The size of the transport block (TBS: transport block size) of the PUSCH is determined based on a part or all of the target coding rate and the modulation scheme for the PUSCH.

[0130] DCI format 0_0 does not include any fields used to request CSI.

[0131] DCI format 0_0 does not include a carrier indicator field. The uplink component carrier on which the PUSCH scheduled by DCI format 0_0 is arranged is the same as the uplink component carrier on which the PDCCH including DCI format 0_0 is arranged.

[0132] DCI format 0_0 does not include a BWP field. The active uplink BWP is unchanged by DCI format 0_0.

[0133] DCI format 0_1 ​​is used for scheduling PUSCH for a cell (or located on a cell). DCI format 0_1 ​​includes some or all of fields 2A to 2H. 2A is a DCI format identification field. 2B is a frequency domain resource allocation field. 2C is a time domain resource allocation field. 2D is a frequency hopping flag field. 2E is an MCS field. 2F is a CSI request field. 2G is a BWP field. 2H is a carrier indicator field.

[0134] The DCI format identification field included in DCI format 0_1 ​​indicates 0 (or indicates that DCI format 0_1 ​​is an uplink DCI format).

[0135] The frequency domain resource allocation field included in DCI format 0_1 ​​is used to indicate the allocation of frequency resources for the PUSCH scheduled by the DCI format.

[0136] The time domain resource allocation field included in DCI format 0_1 ​​is used to indicate the allocation of time resources for the PUSCH scheduled by the DCI format.

[0137] The frequency hopping flag field in DCI format 0_1 ​​is used to indicate whether frequency hopping is applied to the PUSCH scheduled by DCI format 0_1.

[0138] The MCS field included in DCI format 0_1 ​​is used to indicate some or all of the modulation scheme for the PUSCH and / or the target coding rate for the PUSCH scheduled by the DCI format.

[0139] If DCI format 0_1 ​​includes a BWP field, the BWP field may be used to indicate an uplink BWP in which a PUSCH scheduled by DCI format 0_1 ​​is placed, depending on the capability of the terminal device 1. If DCI format 0_1 ​​does not include a BWP field, the active uplink BWP is not changed by DCI format 0_1.

[0140] The CSI request field is used to request CSI.

[0141] If DCI format 0_1 ​​includes a carrier indicator field, the carrier indicator field may be used to indicate the uplink component carrier (or serving cell) on which the PUSCH is located. If DCI format 0_1 ​​does not include a carrier indicator field, the serving cell on which the PUSCH is located is the same as the serving cell on which the PDCCH including the DCI format 0_1 ​​used for scheduling the PUSCH is located.

[0142] DCI format 1_0 is used for scheduling the PDSCH of a cell (located on the cell). DCI format 1_0 includes some or all of fields 3A to 3F. 3A is a DCI format identification field. 3B is a frequency domain resource allocation field. 3C is a time domain resource allocation field. 3D is an MCS field. 3E is a PDSCH-to-HARQ-feedback indicator field. 3F is a PUCCH resource indicator field.

[0143] The DCI format identification field included in DCI format 1_0 indicates 1 (or indicates that DCI format 1_0 is a downlink DCI format).

[0144] The frequency domain resource allocation field included in DCI format 1_0 is used to indicate the allocation of frequency resources for the PDSCH scheduled by DCI format 1_0.

[0145] The time domain resource allocation field included in DCI format 1_0 is used to indicate the allocation of time resources for the PDSCH scheduled by DCI format 1_0.

[0146] The MCS field included in DCI format 1_0 is used to indicate a part or all of a modulation scheme for the PDSCH scheduled by DCI format 1_0 and / or a target coding rate for the PDSCH. The size of the transport block (TBS: transport block size) of the PDSCH is determined based on a part or all of the target coding rate and the modulation scheme for the PDSCH.

[0147] The PDSCH-to-HARQ feedback timing indicator field is used to indicate the offset (K1) from the slot in which the last OFDM symbol of the PDSCH scheduled by DCI format 1_0 is contained in another slot in which the first OFDM symbol of the PUCCH triggered by DCI format 1_0 is contained.

[0148] The PUCCH resource indicator field is a field that indicates an index of any one or more PUCCH resources included in a PUCCH resource set for PUCCH transmission. A PUCCH resource set is composed of one or more PUCCH resources.

[0149] DCI format 1_0 does not include a carrier indicator field. The downlink component carrier on which the PDSCH scheduled by DCI format 1_0 is arranged is the same as the downlink component carrier on which the PDCCH including DCI format 1_0 is arranged.

[0150] DCI format 1_0 does not include a BWP field. A downlink BWP in which a PDSCH scheduled by DCI format 1_0 is arranged is the same as a downlink BWP in which a PDCCH including DCI format 1_0 is arranged.

[0151] DCI format 1_1 is used for scheduling PDSCH for a cell (or located on a cell). DCI format 1_1 includes some or all of fields 4A to 4H. 4A is a DCI format identification field. 4B is a frequency domain resource allocation field. 4C is a time domain resource allocation field. 4D is an MCS field. 4E is a PDSCH-to-HARQ-feedback indicator field. 4F is a PUCCH resource indicator field. 4G is a BWP field. 4H is a carrier indicator field.

[0152] The DCI format identification field included in DCI format 1_1 indicates 1 (or indicates that DCI format 1_1 is a downlink DCI format).

[0153] The frequency domain resource allocation field included in DCI format 1_1 is used to indicate the allocation of frequency resources for the PDSCH scheduled by DCI format 1_1.

[0154] The time domain resource allocation field included in DCI format 1_1 is used to indicate the allocation of time resources for the PDSCH scheduled by DCI format 1_1.

[0155] The MCS field included in DCI format 1_1 is used to indicate part or all of the modulation scheme for the PDSCH and / or the target coding rate for the PDSCH scheduled by DCI format 1_1.

[0156] If DCI format 1_1 includes a PDSCH-to-HARQ feedback timing indicator field, the PDSCH-to-HARQ feedback timing indicator field indicates an offset (K1) from a slot containing the last OFDM symbol of a PDSCH scheduled by DCI format 1_1 to another slot containing the first OFDM symbol of a PUCCH triggered by DCI format 1_1.

[0157] If DCI format 1_1 includes a BWP field, the BWP is used to indicate the downlink BWP in which the PDSCH scheduled by DCI format 1_1 is located. If DCI format 1_1 does not include a BWP field, the downlink BWP in which the PDSCH scheduled by DCI format 1_1 is located is the same as the downlink BWP in which the PDCCH including DCI format 1_1 is located.

[0158] When DCI format 1_1 includes a carrier indicator field, the carrier indicator field is used to indicate the downlink component carrier (or serving cell) on which the PDSCH is arranged. When DCI format 1_1 does not include a carrier indicator field, the downlink component carrier (or serving cell) on which the PDSCH is arranged is the same as the downlink component carrier (or serving cell) on which the PDCCH including the DCI format 1_1 used for scheduling the PDSCH is arranged.

[0159] The PDSCH is used to transmit one or more transport blocks. The base station device 3 transmits the PDSCH. The terminal device 1 receives the PDSCH.

[0160] The downlink physical signal corresponds to a set of resource elements. The downlink physical signal cannot carry information generated at a higher layer. The downlink physical signal is transmitted by a base station device 3. The downlink physical signal is received by a terminal device 1. In a wireless communication system according to an aspect of an exemplary embodiment and mode, some or all of SS (Synchronization signal), DL DMRS (DownLink DeModulation Reference Signal), CSI-RS (Channel State Information-Reference Signal), and DL PTRS (DownLink Phase Tracking Reference Signal) may be used.

[0161] The synchronization signal is used for synchronization in the frequency domain and / or the time domain of the downlink by the terminal device 1. The synchronization signal is a general term for a primary synchronization signal (PSS) and a secondary synchronization signal (SSS).

[0162] FIG. 8 is a diagram illustrating an example of a configuration of an SS / PBCH block according to one aspect of an exemplary embodiment and mode. In FIG. 8, the horizontal axis is the time domain (OFDM symbol index l sym ), with the vertical axis representing the frequency domain. The shaded blocks represent a set of resource elements for the PSS. The gridded blocks represent a set of resource elements for the SSS. Additionally, the horizontally lined blocks represent a set of resource elements for the PBCH and a set of resource elements for the DMRS for the PBCH (DMRS associated with the PBCH, DMRS included in the PBCH, and DMRS corresponding to the PBCH).

[0163] As shown in FIG. 8, the SS / PBCH block includes a PSS, an SSS, and a PBCH. The SS / PBCH block includes four consecutive OFDM symbols. The SS / PBCH block includes 240 subcarriers. The PSS is assigned to the 57th to 183rd subcarriers in the first OFDM symbol. The SSS is assigned to the 57th to 183rd subcarriers in the third OFDM symbol. The 1st to 56th subcarriers of the first OFDM symbol may be set to zero. The 184th to 240th subcarriers of the first OFDM symbol may be set to zero. The 49th to 56th subcarriers of the third OFDM symbol may be set to zero. The 184th to 192nd subcarriers of the third OFDM symbol may be set to zero. In the 1st to 240th subcarriers of the second OFDM symbol, the PBCH is assigned to subcarriers that are not assigned a DMRS of the PBCH. In the 1st to 48th subcarriers of the third OFDM symbol, the PBCH is assigned to subcarriers to which the DMRS of the PBCH is not assigned. In the 193rd to 240th subcarriers of the third OFDM symbol, the PBCH is assigned to subcarriers to which the DMRS of the PBCH is not assigned. In the 1st to 240th subcarriers of the fourth OFDM symbol, the PBCH is assigned to subcarriers to which the DMRS of the PBCH is not assigned.

[0164] The antenna ports for the PSS, SSS, PBCH, and DMRS of the PBCH in an SS / PBCH block are the same.

[0165] For a DM-RS on a PBCH, the channel on which a symbol of the PBCH on an antenna port is carried can be inferred from the channel on which another symbol of the DM-RS on an antenna port is carried with the same SS / PBCH block index only if the two symbols are within an SS / PBCH block transmitted in the same slot.

[0166] DL DMRS is a general term for PBCH DMRS, PDSCH DMRS, and PDCCH DMRS.

[0167] The set of antenna ports for the DMRS for the PDSCH (DMRS associated with the PDSCH, DMRS included in the PDSCH, DMRS corresponding to the PDSCH) is given based on the set of antenna ports for the PDSCH. For example, the set of antenna ports for the DMRS for the PDSCH may be the same as the set of antenna ports for the PDSCH.

[0168] The transmission of the PDSCH and the transmission of the DMRS for the PDSCH are indicated by one DCI format. The PDSCH and the DMRS for the PDSCH are collectively referred to as the PDSCH.

[0169] For a DM-RS associated with a PDSCH, the channel on which a symbol of the PDSCH on one antenna port is carried can be inferred from the channel on which another symbol of the DM-RS on the antenna port is carried only if the two symbols are in the same resource as the scheduled PDSCH, in the same slot, and in the same PRG (Precoding Resource Group).

[0170] The antenna ports for DMRS for the PDCCH (DMRS associated with the PDCCH, DMRS included in the PDCCH, and DMRS corresponding to the PDCCH) are the same as the antenna ports for the PDCCH.

[0171] For a DM-RS associated with a PDCCH, the channel on which a symbol of the PDCCH on one antenna port is carried can be inferred from the channel on which another symbol of the DM-RS on the same antenna port is carried only if the two symbols are within resources where the UE can assume that it is using the same precoding (i.e., within resources within resources within a REG bundle).

[0172] BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel) and DL-SCH (Downlink-Shared CHannel) are transport channels. A channel used in the MAC layer is called a transport channel. The unit of the transport channel used in the MAC layer is also called a transport block (TB) or a MAC PDU (Protocol Data Unit). In the MAC layer, HARQ (Hybrid Automatic Repeat Request) control is performed for each transport block. A transport block is a unit of data delivered to the physical layer by the MAC layer. In the physical layer, a transport block is mapped to a codeword, and a modulation process is performed for each codeword.

[0173] BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), and DCCH (Dedicated Control CHannel) are logical channels. BCCH is an RRC layer channel used to distribute MIB or system information. CCCH is used to transmit common RRC messages in multiple terminal devices 1. CCCH is used for terminal devices 1 that are not in RRC connected mode. DCCH is used to transmit dedicated RRC messages to terminal devices 1. DCCH is used for terminal devices 1 that are in RRC connected mode.

[0174] The RRC message includes one or more RRC parameters. For example, the RRC message may include a MIB. For example, the RRC message may include system information (SIB: System Information Block, MIB). The SIB is a general term for various types of SIBs (e.g., SIB1, SIB2). For example, the RRC message may include a message corresponding to a CCCH. For example, the RRC message may include a message corresponding to a DCCH. The RRC message is a general term for a common RRC message and a dedicated RRC message.

[0175] The BCCH in the logical channel is mapped to the BCH or DL-SCH in the transport channel, the CCCH in the logical channel is mapped to the DL-SCH or UL-SCH in the transport channel, and the DCCH in the logical channel is mapped to the DL-SCH or UL-SCH in the transport channel.

[0176] The UL-SCH in the transport channel is mapped to the PUSCH in the physical channel, the DL-SCH in the transport channel is mapped to the PDSCH in the physical channel, and the BCH in the transport channel is mapped to the PBCH in the physical channel.

[0177] The upper layer parameters are parameters included in an RRC message or a MAC CE (Medium Access Control Element). The upper layer parameters are a collective term for information included in the MIB, system information, a message corresponding to the CCCH, a message corresponding to the DCCH, the RRC parameters, and the MAC CE.

[0178] The higher layer parameters may be cell-specific parameters or UE-specific parameters. Cell-specific parameters are parameters that include common configurations within a cell. UE-specific parameters are parameters that include configurations that may be configured differently for each UE.

[0179] The base station device 3 may indicate changes in cell-specific parameters due to reconfiguration by random access. The UE may change cell-specific parameters before triggering random access. The base station device may indicate changes in UE-specific parameters due to reconfiguration with or without random access. The UE may change UE-specific parameters before or after random access.

[0180] The procedure executed by the terminal device 1 includes some or all of the following steps 5A to 5C: 5A is cell search, 5B is random access, and 5C is data communication.

[0181] Cell search is a procedure used by the terminal device 1 to synchronize with a cell in the time domain and / or frequency domain and to detect a physical cell identifier. By cell search, the terminal device 1 attempts to detect a physical cell ID by performing time domain and / or frequency domain synchronization with a cell.

[0182] The sequence of PSS is given based on the physical cell ID. The sequence of SSS is given based on the physical cell ID.

[0183] The SS / PBCH block candidates indicate resources where the transmission of the SS / PBCH block may occur. The SS / PBCH block is transmitted on the resources indicated as the SS / PBCH block candidates. The base station device 3 transmits the SS / PBCH block on the SS / PBCH block candidates. The terminal device 1 receives the SS / PBCH block on the SS / PBCH block candidates.

[0184] The base station device 3 transmits an SS / PBCH block of one or more indexes at a predetermined cycle. The terminal device 1 attempts to decode the PBCH included in the SS / PBCH block.

[0185] Random access is a procedure that includes some or all of message 1, message 2, message 3, and message 4.

[0186] Message 1 is a procedure for transmitting a PRACH by the terminal device 1. The terminal device 1 transmits a PRACH on one PRACH opportunity selected from one or more PRACH opportunities based on an index of an SS / PBCH block candidate detected based on a cell search.

[0187] Message 2 is a procedure in which the terminal device 1 attempts to detect DCI format 1_0 using a CRC (Cyclic Redundancy Check) scrambled by an RA-RNTI (Random Access-Radio Network Temporary Identifier).

[0188] Message 3 is a procedure for transmitting a PUSCH scheduled by a random access response grant included in the random access response scheduled by DCI format 1_0 detected in the message 2 procedure.

[0189] The PUSCH scheduled based on the random access response grant is either a message 3 PUSCH or a PUSCH. The message 3 PUSCH includes a contention resolution identifier MAC CE. The contention resolution ID MAC CE includes the contention resolution ID.

[0190] Message 3 PUSCH retransmissions are scheduled by DCI format 0_0 with CRC scrambled by TC-RNTI (Temporary Cell-Radio Network Temporary Identifier).

[0191] Message 4 is a procedure for attempting to detect DCI format 1_0 with a CRC scrambled by either a C-RNTI (Cell-Radio Network Temporary Identifier) ​​or a TC-RNTI. The terminal device 1 receives a PDSCH scheduled based on the DCI format 1_0. The PDSCH may include a collision resolution ID.

[0192] Data communication is a general term for downlink communication and uplink communication.

[0193] In data communication, the terminal device 1 attempts to detect a PDCCH (attempts to monitor a PDCCH, monitors a PDCCH, detects a DCI format, attempts to monitor a DCI format, monitors a DCI format) in resources identified based on a control resource set and a search space set. This is also referred to as "the terminal device 1 attempts to detect a PDCCH in a control resource set", "the terminal device 1 attempts to detect a PDCCH in a search space set", "the terminal device 1 attempts to detect a PDCCH candidate in a control resource set", "the terminal device 1 attempts to detect a PDCCH candidate in a search space set", "the terminal device 1 attempts to detect a DCI format in a control resource set", or "the terminal device 1 attempts to detect a DCI format in a search space set". Monitoring the PDCCH may be equivalent to monitoring the DCI format in the PDCCH.

[0194] A control resource set is a set of resources identified by a set of resource blocks and a set of OFDM symbols in a slot.

[0195] The set of resources for the control resource set may be indicated by a higher layer parameter. The number of OFDM symbols included in the control resource set may be indicated by a higher layer parameter.

[0196] The PDCCH may also be referred to as a PDCCH candidate.

[0197] A search space set is defined as a set of PDCCH candidates, which may be a common search space (CSS) set or a UE-specific search space (USS) set.

[0198] The CSS set is a collective term for a PDCCH common search space set of type 0, a PDCCH common search space set of type 0a, a PDCCH common search space set of type 1, a PDCCH common search space set of type 2, and a PDCCH common search space set of type 3. The USS set may also be referred to as a UE-specific PDCCH search space set.

[0199] A PDCCH common search space set of type 0 may be used as a common search space set with index 0. A PDCCH common search space set of type 0 may be a common search space set with index 0.

[0200] A search space set is associated with (contained in, corresponds to) a control resource set. The index of the control resource set associated with the search space set may be indicated by a higher layer parameter.

[0201] For a search space set, some or all of 6A to 6C may be indicated by at least higher layer parameters. 6A is a PDCCH monitoring period. 6B is a PDCCH monitoring pattern in a slot. 6C is a PDCCH monitoring offset.

[0202] A monitoring opportunity for a search space set may correspond to one or more OFDM symbols to which a first OFDM symbol of a control resource set associated with the search space set is assigned. A monitoring opportunity for a search space set may correspond to a resource identified by the first OFDM symbol of a control resource set associated with the search space set. A monitoring opportunity for a search space set is provided based on some or all of a PDCCH monitoring periodicity, a PDCCH monitoring pattern within a slot, and a PDCCH monitoring offset.

[0203] 9 is a diagram illustrating an example of a monitoring opportunity of a search space set according to an aspect of an exemplary embodiment and mode. In FIG. 9, search space set 91 and search space set 92 are configured in primary cell 301, search space set 93 is configured in secondary cell 302, and search space set 94 is configured in secondary cell 303.

[0204] In FIG. 9, blocks indicated by grid lines indicate search space set 91, blocks indicated by diagonal lines slanting upward to the right indicate search space set 92, blocks indicated by diagonal lines slanting upward to the left indicate search space set 93, and blocks indicated by horizontal lines indicate search space set 94.

[0205] 9, the PDCCH monitoring periodicity of search space set 91 is set to 1 slot, the PDCCH monitoring offset of search space set 91 is set to 0 slot, and the PDCCH monitoring pattern of search space set 91 is [1,0,0,0,0,0,0,1,0,0,0,0,0,0,0]. That is, the monitoring opportunities of search space set 91 correspond to the first OFDM symbol (OFDM symbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each of the slots.

[0206] 9, the PDCCH monitoring periodicity of search space set 92 is set to 2 slots, the PDCCH monitoring offset of search space set 92 is set to 0 slots, and the PDCCH monitoring pattern of search space set 92 is [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0]. That is, the monitoring opportunity of search space set 92 corresponds to the first OFDM symbol (OFDM symbol #0) in each of the even slots.

[0207] 9, the PDCCH monitoring periodicity of search space set 93 is set to 2 slots, the PDCCH monitoring offset of search space set 93 is set to 0 slots, and the PDCCH monitoring pattern of search space set 93 is [0,0,0,0,0,0,0,1,0,0,0,0,0,0,0]. That is, the monitoring opportunity of search space set 93 corresponds to the eighth OFDM symbol (OFDM symbol #8) in each of the even slots.

[0208] 9, the PDCCH monitoring periodicity of search space set 94 is set to 2 slots, the PDCCH monitoring offset of search space set 94 is set to 1 slot, and the PDCCH monitoring pattern of search space set 94 is [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0]. That is, the monitoring opportunity of search space set 94 corresponds to the first OFDM symbol (OFDM symbol #0) in each of the odd-numbered slots.

[0209] A Type 0 PDCCH common search space set may be used for a DCI format that has a cyclic redundancy check (CRC) sequence scrambled by a System Information-Radio Network Temporary Identifier (SI-RNTI).

[0210] A Type 0a PDCCH common search space set may be used for a DCI format having a cyclic redundancy check sequence scrambled by the SI-RNTI.

[0211] A Type 1 PDCCH common search space set may be used for DCI formats having a CRC sequence scrambled by a Random Access Radio Network Temporary Identifier (RA-RNTI) or a CRC sequence scrambled by a Temporary Cell Radio Network Temporary Identifier (TC-RNTI).

[0212] A Type 2 PDCCH common search space set may be used for a DCI format having a CRC sequence scrambled by a Paging-Radio Network Temporary Identifier (P-RNTI).

[0213] A Type 3 PDCCH common search space set may be used for a DCI format having a CRC sequence scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI).

[0214] A UE-specific search space set may be used for a DCI format having a CRC sequence scrambled by the C-RNTI.

[0215] In downlink communication, the terminal device 1 can detect a downlink DCI format. The detected downlink DCI format is used for resource allocation of PDSCH. The detected downlink DCI format is also referred to as downlink allocation. The terminal device 1 attempts to receive PDSCH. Based on the PUCCH resource indicated based on the detected downlink DCI format, a HARQ-ACK corresponding to the PDSCH (a HARQ-ACK corresponding to a transport block included in the PDSCH) can be reported to the base station device 3.

[0216] In uplink communication, the terminal device 1 can detect an uplink DCI format. The detected uplink DCI format is used for resource allocation of a PUSCH. The detected uplink DCI format is also called an uplink grant. The terminal device 1 transmits a PUSCH.

[0217] Figure 10 shows an example configuration of a time-frequency subband grid for SBFD operation. In Figure 10, 900, 901, 902, 903, 904, and 905 represent respective points in the time domain. 910, 911, 912, 913, and 914 represent respective durations in the time domain. 920, 921, 922, 923, 924, and 925 represent respective points in the frequency domain. 930, 931, 932, 933, and 934 represent respective bandwidths in the frequency domain.

[0218] In the example shown in Fig. 10, it is assumed that duration 910 represents the DL region, duration 913 represents the flexible region, and duration 914 represents the UL region. The DL region, the flexible region, and the UL region are configured by common RRC parameters for the TDD pattern, referred to as common TDD parameters. It is also assumed that the duration from 900 to 905 as the period of the TDD pattern is configured by common TDD parameters.

[0219] There are two examples of configuration details of durations 911 and 912. One example (example #1) is when durations 911 and 912 are DL regions configured by common TDD parameters. Another example (example #2) is when durations 911 and 912 are flexible regions configured by common TDD parameters.

[0220] In the example shown in FIG. 10, it is assumed that bandwidths 930 and 934 represent the respective bandwidths of DL subbands 951 and 952, bandwidth 932 represents the bandwidth of UL subband 950, and bandwidths 931 and 933 represent the respective bandwidths of the guard bands.

[0221] In the example shown in FIG. 10, it is assumed that the terminal device 1 recognizes the area identified by duration 912 and bandwidth 932 as a UL subband 950, the area identified by duration 912 and bandwidth 930 as a DL subband 951, and the area identified by duration 912 and bandwidth 934 as a DL subband 952.

[0222] In the example shown in FIG. 10, duration 911 can be 0 or more in length, and duration 913 can be 0 or more in length.

[0223] In the example shown in FIG. 10, the width of bandwidth 931 can be 0 or more, and the width of bandwidth 933 can be 0 or more.

[0224] In Example #2, the terminal device 1 may be further configured to monitor DCI format 2_0. DCI format 2_0 is configured with an information field indicating the usage type of the flexible region. For example, there are usage types of "downlink", "flexible", and "uplink".

[0225] Figure 11 shows an example configuration of DCI format 2_0. In Figure 11, the horizontal axis represents the bit space of DCI format 2_0. DCI format 2_0 has N SFI fields and a CRC sequence. Each SFI field is used to indicate a slot format indicator for the UE. The CRC sequence is scrambled by the SFI-RNTI.

[0226] To monitor DCI format 2_0, the UE is provided with an RRC parameter indicating the payload size of DCI format 2_0. The payload represents the number of bits of DCI format 2_0 to be monitored, excluding the number of bits in the CRC sequence. In another expression, the payload size represents the number of bits of the N SFI fields.

[0227] To derive the slot format indicator, the UE is provided with an RRC parameter indicating a starting bit location of an SFI field to be applied to the UE. Furthermore, to derive the slot format indicator, the UE is provided with one or more RRC parameters used to determine the number of bits of the SFI field to be applied to the UE. Each of the one or more RRC parameters is an index for a slot format combination. Each slot format combination is provided with an index. The UE determines a maximum index among the one or more RRC parameters. The UE determines the number of bits of the SFI field according to the determined maximum index. For example, the UE determines the number of bits of the SFI field according to max(ceil(log2(maxSFIindex+1)),1), where maxSFIindex is the value of the determined maximum index and max(A,B) represents an operation to obtain the maximum value of A and B.

[0228] A slot format combination includes one or more slot formats. Each slot format includes a transmission direction configuration for each symbol in the slot. For example, the slot format represents "DDDDDDFFUUUUUU" where each capital letter indicates a transmission direction for the OFDM symbol in the slot. Here, "D" represents that the corresponding OFDM symbol in the slot is a downlink symbol, "F" represents that the corresponding OFDM symbol in the slot is a flexible symbol, and "U" represents that the corresponding OFDM symbol in the slot is an uplink symbol. In another example, the slot format represents "DDDDDDDDDDFFUU". In another example, the slot format represents downlink symbols for all OFDM symbols in the slot. In another example, the slot format represents flexible symbols for all OFDM symbols in the slot. In another example, the slot format represents uplink symbols for all OFDM symbols in the slot. In another example, the slot format represents special information instructing the UE to assume that the UE is not configured to monitor DCI format 2_0.

[0229] If DCI format 2_0 is detected in a slot with index n, then one or more slot formats in the slot format combination identified by DCI format 2_0 are applied to several slots starting at the slot with index n. For example, a first slot format in the one or more slot formats is applied to the slot with index n. Furthermore, a second slot format in the one or more slot formats is applied to the slot with index n+1. Furthermore, an x-th slot format in the one or more slot formats is applied to the slot with index n+x-1.

[0230] Returning to FIG. 7, a wireless terminal or terminal device 1 according to the exemplary embodiments and modes described herein communicates with a radio access network over an air interface and includes a receiver circuit 11b and a processor circuit 19. The receiver circuit 11b is configured to receive from the radio access network (1) slot format information including a transmission direction configuration for each symbol in a slot for an uplink (UL) subband, and (2) activation information. The processor circuit (19), which may include an activation controller 18, is configured to use the activation information to perform activation or deactivation of the transmission direction configuration for at least a portion of the UL subband. Examples of activation information are provided below.

[0231] In dynamic TDD operation using DCI format 2_0, it is better to enable / disable UL sub-band 950 by DCI format 2_0 to take advantage of dynamic TDD benefits. A UE, also known as a wireless terminal or radio device, may assume that UL sub-band 950 is disabled if the UE does not enable UL sub-band 950.

[0232] Exemplary operations or steps performed by a wireless terminal or terminal device 1 of an exemplary embodiment and mode are illustrated in Figure 12. Operation 12-1 includes the wireless terminal 1 receiving both slot format information, which may include a transmission direction configuration for each symbol in a slot for an uplink (UL) sub-band, and activation information from a radio access network, e.g., from a base station or access node 3. Operation 12-2 includes using the activation information to perform an activation or deactivation of the transmission direction configuration for at least a portion of the UL sub-band.

[0233] Returning to Figure 5, a base station or access node 3 according to the exemplary embodiments and modes described herein communicates with a wireless terminal 1 over an air interface and includes a transmitter circuit 30a and a receiver circuit 30b. The transmitter circuit 30a is configured to transmit both slot format information, including a transmit direction configuration for each symbol in a slot for an uplink (UL) subband, and enabling information to the wireless terminal. The receiver circuit 30b is configured to receive information transmitted in symbols of the uplink subband in accordance with the enabling information from the wireless terminal.

[0234] Exemplary operations or steps performed by a base station or access node 3 according to exemplary embodiments and modes described herein are illustrated in Figure 13. Operation 13-1 involves the base station 3 transmitting to a wireless terminal both slot format information, which may include a transmit direction configuration for each symbol in a slot for an uplink (UL) subband, and enabling information. Operation 13-2 involves receiving from the wireless terminal information transmitted in the symbols of the uplink subband in accordance with the enabling information.

[0235] Example of activation information In some examples of the activation information, the activation information may be obtained from a downlink control information format that includes one or more information fields for providing slot format information. Downlink control information (DCI) may be information carried in a DCI format message transmitted from base station 3 to wireless terminal 1. The fields of the downlink control information may be arranged or organized according to one of several format types, including those listed and described above. In this particular example of the activation information, the slot format information may be a DCI format type other than DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1. For example, the activation information may be carried in downlink control information having a format type, DCI format 2_0.

[0236] In one example of the activation information, the DCI format may include an integer number N of Slot Format Indicator (SFI) fields and a Cyclic Redundancy Check (CRC), as shown as a non-limiting example in Figure 14. In this example of a representation of the activation information, the activation information includes additional fields of the DCI format.

[0237] For example, DCI format 2_0 may further include a 1-bit field for whether to enable UL subband 950. For example, if the 1-bit field indicates 1, the UE may enable UL subband 950 in a symbol to which a slot format determined by DCI format 2_0 is applied. For example, if the 1-bit field indicates 0, the UE may not enable UL subband 950 in a symbol to which a slot format determined by DCI format 2_0 is applied.

[0238] For example, the 1-bit field may be used to determine whether to enable the UL subband 950 in a downlink symbol determined by DCI format 2_0. For example, if the 1-bit field indicates 1, the UE may enable the UL subband 950 in a downlink symbol determined by DCI format 2_0. For example, if the 1-bit field indicates 0, the UE may not enable the UL subband 950 in a downlink symbol determined by DCI format 2_0.

[0239] For example, the 1-bit field may be used to determine whether to enable the UL subband 950 in a flexible symbol determined by DCI format 2_0. For example, if the 1-bit field indicates 1, the UE may enable the UL subband 950 in a flexible symbol determined by DCI format 2_0. For example, if the 1-bit field indicates 0, the UE may not enable the UL subband 950 in a flexible symbol determined by DCI format 2_0.

[0240] For example, the UE may not enable the UL subband 950 in uplink symbols determined by DCI format 2_0, regardless of the value of the one-bit field.

[0241] Thus, as described above and herein, the activation information is used to perform activation or deactivation of the transmission direction configuration for at least one of the following activated UL subband objects: (1) all of the UL subbands, (2) symbols of the uplink subbands whose slot format indicates a downlink direction, (3) symbols of the uplink subbands whose slot format indicates an uplink direction, and (4) symbols of the uplink subbands whose slot format indicates a flexible direction. Which of the activated UL subband objects the activation information applies to, i.e., which of the objects (1)-(4) are involved, may be communicated to the wireless terminal 1 in an RRC parameter or RRC message transmitted from the radio control network, i.e., from the base station 3.

[0242] As another example of the activation information, a new DCI format may be introduced. For example, the UE may be provided with an RRC parameter indicating a payload size of the new DCI format. The new DCI format is composed of one or more SFI fields, a CRC sequence, and a 1-bit field indicating whether the UL subband 950 should be activated. For example, the SFI field may be used to identify a slot format combination from one or more slot format combinations provided for DCI format 2_0. For example, the SFI field may be used to identify a slot format combination from one or more slot format combinations provided for the new DCI format. For example, if the 1-bit field indicates 1, the UE may activate the UL subband 950 in a symbol to which a slot format determined by the new DCI format is applied. For example, if the 1-bit field indicates 0, the UE may not activate the UL subband 950 in a symbol to which a slot format determined by the new DCI format is applied.

[0243] For example, the one-bit field may be used to determine whether to enable the UL subband 950 in the downlink symbol determined by the new DCI format. For example, if the one-bit field indicates 1, the UE may enable the UL subband 950 in the downlink symbol determined by the new DCI format. For example, if the one-bit field indicates 0, the UE may not enable the UL subband 950 in the downlink symbol determined by the new DCI format.

[0244] For example, the one-bit field may be used to determine whether to enable the UL subband 950 in the flexible symbol determined by the new DCI format. For example, if the one-bit field indicates 1, the UE may enable the UL subband 950 in the flexible symbol determined by the new DCI format. For example, if the one-bit field indicates 0, the UE may not enable the UL subband 950 in the flexible symbol determined by the new DCI format.

[0245] For example, the UE may not enable the UL subband 950 in uplink symbols determined by the new DCI format, regardless of the value of the one-bit field.

[0246] As another example, as shown in FIG. 15 as a non-limiting example, the DCI format may include an integer number N of slot format indication (SFI) fields and cyclic redundancy check (CRC) information, and the activation information includes a radio network temporary identifier (RNTI) used to scramble the CRC information. For example, a new DCI format may be introduced. For example, the UE may be provided with an RRC parameter indicating a payload size of the new DCI format. The new DCI format is configured with one or more SFI fields and CRC information. For example, the SFI field may be used to identify a slot format combination from one or more slot format combinations provided for DCI format 2_0. For example, the SFI field may be used to identify a slot format combination from one or more slot format combinations provided for the new DCI format. In the new DCI format, an RNTI different from the RNTI for DCI format 2_0 is configured. For example, the activation / deactivation of the UL subband may be performed via the DCI format type. For example, if a new DCI format is detected, the UE may activate the UL subband 950 in a symbol to which the slot format determined by the new DCI format is applied. For example, if DCI format 2_0 is detected, the UE may not enable the UL subband 950 in symbols that are subject to the slot format determined by DCI format 2_0.

[0247] For example, the DCI format type may be used to determine whether to enable UL subband 950 in downlink symbols determined by the new DCI format or DCI format 2_0. For example, if a new DCI format is detected, the UE may enable UL subband 950 in downlink symbols determined by the new DCI format. For example, if DCI format 2_0 is detected, the UE may not enable UL subband 950 in downlink symbols determined by DCI format 2_0.

[0248] For example, the DCI format type may be used to determine whether to enable UL subband 950 in a flexible symbol determined by the new DCI format or DCI format 2_0. For example, if a new DCI format is detected, the UE may enable UL subband 950 in a flexible symbol determined by the new DCI format. For example, if DCI format 2_0 is detected, the UE may not enable UL subband 950 in a flexible symbol determined by DCI format 2_0.

[0249] For example, the UE may not enable the UL subband 950 in uplink symbols determined by the new DCI format or DCI format 2_0, regardless of the detected DCI format type.

[0250] As yet another example of the representation of the activation information, as shown as a non-limiting example in FIG. 16, the additional field of the slot format information may include an X-bit field or bitmap, where X is an integer greater than 1, and each bit of the X-bit field / bitmap indicates either activation or deactivation of a UL subband. Each bit of the X-bit field / bitmap is associated with one of (1) a slot of the UL subband, (2) a group of orthogonal frequency division multiplexing (OFDM) symbols of the UL subband, and (3) an OFDM symbol of the UL subband. For example, DCI format 2_0 may further include an X-bit field for whether to activate the UL subband 950. For example, each bit in the X-bits is associated with a slot. For example, each bit in the X-bits is associated with a group of OFDM symbols. For example, each bit in the X-bits is associated with an OFDM symbol. For example, if a bit in the X-bit field indicates 1, the UE may activate the UL subband 950 in the symbol associated with the bit. For example, if a bit in the X-bits field indicates a 1, the UE may not enable the UL subband 950 in the symbol associated with the bit.

[0251] As an example of the above, each bit in the bitmap may indicate whether SBFD should be used for a particular slot. For example, if a cycle of DCI format 2_0 is 5 slots, one may have a 5-bit bitmap for the slot-level bitmap or a 70-bit bitmap for the symbol-level bitmap, or if the number of slots / symbols configured in the UL subband in a particular duration is 2 slots / 28 symbols, a 2 (slot-level) / 28 (symbol-level) bitmap is used.

[0252] An exemplary semi-static TDD configuration for the bitmap may be "DDFFU," an exemplary TDD configuration, which means that the TDD pattern consists of five slots, where the first two slots are downlink, the third and fourth slots are flexible, and the last slot is uplink.

[0253] An exemplary SBFD UL subband configuration may be "01100", indicating that the UL subband configuration is provided based on the TDD configuration periodicity (i.e., 5 slots, with the second and third slots configured with UL subbands but not for the other slots). In the above example, bitmap information is only required for slots with UL subbands (i.e., the second and third slots). Thus, the above shows a symbol level bitmap for two slots of 28 bits (assuming 14 OFDM symbols per slot). The foregoing is merely one non-exhaustive and non-limiting numerical example.

[0254] As yet another example of a representation of the activation information, the DCI format may include information specifying which symbols of a slot of a UL sub-band are enabled or disabled. For example, the format of the DCI format may include information specifying the symbols of a slot of a UL sub-band as being one of downlink, uplink, or flexible.

[0255] For example, a new slot format with a new transmission direction may be introduced. For example, the new slot format may represent "DDDSSSSSSFFUU", where "S" represents that the UL subband 950 is enabled in the corresponding OFDM symbol. For example, "DDDDSSSSSSFFUU" may represent that the UL subband 950 is enabled from the fifth OFDM symbol to the tenth OFDM symbol in the slot, and that the UL subband 950 is not enabled from the first OFDM symbol to the fourth OFDM symbol and from the eleventh OFDM symbol to the fourteenth OFDM symbol.

[0256] As yet another example of the representation of the activation information, the activation information may be obtained from the slot format information, in particular from the format type utilized for the slot format information. For example, the DCI format type DCI format 2_0 may be expressed as: (1) If the UL subband 950 is indicated as downlink in DCI format 2_0, it is enabled, otherwise it is not activated; (2) UL sub-band 950 is enabled if it is indicated as uplink according to DCI format 2_0; and (3) UL sub-band 950 shall be enabled if it is indicated as flexible according to DCI format 2_0. Specify one of the following.

[0257] Further, the slot format information is All UL sub-bands, A symbol of an uplink subband whose slot format indicates a downlink direction; A symbol of an uplink subband whose slot format indicates an uplink direction; Symbols in uplink subbands whose slot format indicates flexible direction At least one of the above may be enabled or disabled.

[0258] For example, the UE may enable / disable the UL subband 950 based on a transmission direction determined by DCI format 2_0. For example, the UE may enable the UL subband 950 in a downlink symbol determined by DCI format 2_0. For example, the UE may not enable the UL subband in a flexible symbol determined by DCI format 2_0. For example, the UE may not enable the UL subband in an uplink symbol determined by DCI format 2_0.

[0259] For example, the UE may not enable the UL subband 950 in the downlink symbol determined by DCI format 2_0. For example, the UE may enable the UL subband in the flexible symbol determined by DCI format 2_0. For example, the UE may not enable the UL subband in the uplink symbol determined by DCI format 2_0.

[0260] For example, the UE may not enable the UL subband 950 in a downlink symbol determined by DCI format 2_0. For example, the UE may not enable a UL subband in a flexible symbol determined by DCI format 2_0. For example, the UE may enable a UL subband in an uplink symbol determined by DCI format 2_0.

[0261] The enabling / disabling of the UL sub-band 950 may affect resource allocation in various aspects.

[0262] For example, UL subband 950 may be enabled in a symbol, and DL subbands 951 and / or 952 may be enabled in that symbol.

[0263] FIG. 17 shows an example of resource allocation for PDSCH in a time-frequency subband grid. 1201 denotes time-frequency resources for PDSCH. For example, if UL subband 950 is enabled in a symbol for PDSCH, the UE may receive PDSCH assuming that PDSCH is not mapped in UL subband 950. For example, if UL subband 950 is enabled in a symbol for PDSCH, the UE may receive PDSCH assuming that PDSCH is not mapped in bandwidths 931 and 933. For example, if UL subband 950 is enabled in a symbol for PDSCH, the UE may receive PDSCH assuming that PDSCH is mapped on DL subbands 951 and / or 952.

[0264] The above is at least partially described by a resource allocation procedure that includes at least two steps. The first step is to determine resource allocation information (e.g., the information indicates the time-frequency resource 1201 of FIG. 17). The second step is to determine unavailable resources and exclude the unavailable resources from the resources indicated by the resource allocation information. As an example, if the UL subband 950 is enabled, the UL subband 950 is identified as an unavailable resource and the unavailable resources are excluded from the resources indicated by the resource allocation information. Conversely, if the UL subband 950 is not enabled, the UL subband 950 is not identified as an unavailable resource and the unavailable resources are not excluded from the resources indicated by the resource allocation information, e.g., the PDSCH is transmitted in all resources in the time-frequency resource 1201.

[0265] For example, if UL subband 950 is not enabled in a symbol for the PDSCH, the UE may receive the PDSCH regardless of UL subband 950. For example, if UL subband 950 is not enabled in a symbol for the PDSCH, the UE may receive the PDSCH assuming that the PDSCH is mapped on UL subband 950, DL subbands 951 and 952, and bandwidths 931 and 933.

[0266] For example, for PUSCH, the UE may be provided with two frequency offset values ​​for frequency hopping: one frequency offset value may be applied if the UL subband 950 is enabled in the symbol for PUSCH, and the other frequency offset value may be applied if the UL subband 950 is not enabled in the symbol.

[0267] For example, for PUCCH, the UE may be provided with RRC parameters for two frequency offset values ​​for frequency hopping: one frequency offset value may be applied if the UL subband 950 is enabled in the symbol for PUCCH, and the other frequency offset value may be applied if the UL subband 950 is not enabled in the symbol.

[0268] For example, a UE may be provided with RRC parameters for two PUCCH resource sets: one PUCCH resource set may be selected if the UL subband 950 is enabled, and the other PUCCH resource set may be selected if the UL subband 950 is not enabled.

[0269] The techniques disclosed herein encompass various solutions, including but not limited to those summarized below: In the following, the notation "SBFD is used" means that the UL sub-band is enabled, and the notation "SBFD is not used" means that the UL sub-band is not enabled.

[0270] ●Solution 1: ○1a: Introduce a 1-bit field in DCI format 2_0 to indicate whether SBFD should be used or not. ■If the 1-bit field in DCI format 2_0 indicates "1", the UL subband is enabled; otherwise, the UL subband is not enabled. ○1a': Introduce a new DCI format that has the same structure as DCI format 2_0. ■ A 1-bit field in DCI format 2_0 to indicate whether the UL subband is enabled. ■ The UE determines whether the UL subband is enabled or not by the RNRI (or DCI format type). ○1b: Introduce a bitmap. Each bit in the bitmap indicates whether SBFD should be used for a particular slot. For example, if a cycle of DCI format 2_0 is 5 slots, one may have a 5 (slot-level) or 70 (symbol-level) bit bitmap, or if the number of slots / symbols configured in the UL subband in a particular duration is 2 slots / 28 symbols, a 2 (slot-level) / 28 (symbol-level) bit bitmap is used. ■Semi-static TDD configuration: DDFFU ■SBFD UL sub-band configuration: 01100 ■Bitmap size: 28 bits ○1c: New slot formats are defined with "D", "F", "U" and "S" ("SBFD"). For example, the slot format consists of DDSSSSSSSSFFUU. The slot format can indicate that each symbol in the slot can be downlink, flexible, uplink or SBFD.

[0271] Solution 2: Whether the UL subband is enabled or not is determined based on the indicated slot format. ○2a: If the UL subband is indicated as downlink in DCI format 2_0, it is activated, otherwise it is not activated. ○2b: If the UL subband is indicated as "uplink" in DCI format 2_0, it is activated, otherwise it is not activated. o 2c: If the UL subband is indicated as "flexible" in DCI format 2_0, it is activated, otherwise it is not activated.

[0272] Duplex communication is also described below, all of which are incorporated herein by reference in their entirety.

[0273] U.S. Patent Application No. 17 / 981,667, filed November 7, 2022, entitled “COMMUNICATIONS NETWORK AND METHODS WITH ENHANCED DUPLEX.”

[0274] U.S. Patent Application No. 17 / 728,014, filed on April 25, 2022, entitled “USER EQUIPMENTS AND METHODS FOR DETERMINING TIME-FREQUENCY RESOURCE SET FOR ENHANCED DUPLEX OPERATION.”

[0275] U.S. Provisional Patent Application No. 63 / 367,463, filed on June 30, 2022, entitled “USER EQUIPMENTS AND METHODS FOR DETERMINING TIME-FREQUENCY RESOURCE SET FOR ENHANCED DUPLEX OPERATION.”

[0276] U.S. Provisional Patent Application No. 63 / 367,465, filed on June 30, 2022, entitled “USER EQUIPMENTS AND METHODS FOR DETERMINING TIME-FREQUENCY RESOURCE SET FOR ENHANCED DUPLEX OPERATION.”

[0277] U.S. Provisional Patent Application No. 63 / 369,138, filed on July 22, 2022, entitled “APPARATUS AND METHODS WITH DOWNLINK CHANNEL RESOURCE MAPPING.”

[0278] The various above exemplary embodiments and modes may be utilized in conjunction with each other, for example in combination with each other.

[0279] As used herein, the term "and / or" should be interpreted to mean one or more items. For example, the phrase "A, B, and / or C" should be interpreted to mean either A only, B only, C only, A and B (but excluding C), B and C (but excluding A), A and C (but excluding B), or all of A, B, and C. As used herein, the phrase "at least one of" should be interpreted to mean one or more items. For example, the phrase "at least one of A, B, and C" or the phrase "at least one of A, B, or C" should be interpreted to mean either A only, B only, C only, A and B (but excluding C), B and C (but excluding A), A and C (but excluding B), or all of A, B, and C. As used herein, the phrase "one or more of" should be interpreted to mean one or more items. For example, the phrase "one or more of A, B, and C" or "one or more of A, B, or C" should be interpreted to mean either A only, B only, C only, A and B (but not C), B and C (but not A), A and C (but not B), or all of A, B, and C.

[0280] Certain units and functions described herein may be implemented by electronic machines. For example, electronic machines may refer to processor circuits described herein, such as terminal processor circuit 19 and base station processor 39. Furthermore, the term "processor circuit" is not limited to mean one processor, but may include multiple processors, where multiple processors operate at one or more sites. Furthermore, as used herein, the term "server" is not limited to one server unit, but may encompass multiple servers and / or other electronic devices, co-located at one site or distributed at different sites. With this in mind, FIG. 18 illustrates an example of an electronic machine, e.g., a processor circuit, as including one or more processors 100, program instruction memory 102, other memory 104 (e.g., RAM, cache, etc.), output interface 106 and input interface 107, peripheral interface 108, support circuits 109, and bus 110 for communication between the aforementioned units. The processor(s) 100 may comprise the processor circuitry described herein, such as the terminal processor circuitry 60 and the node processor circuitry 34, or any processor(s) of a network entity of a core network, and suffixed versions thereof.

[0281] The memory or registers described herein may be represented by memory 104 or any computer readable medium, which may be one or more of readily available memories, such as Random Access Memory (RAM), Read Only Memory (ROM), floppy disk, hard disk, flash memory, or any other form of local or remote digital storage, and are preferably non-volatile and may therefore include memory. Support circuits 109 are coupled to the processor 100 for supporting the processor in a conventional manner. These circuits include cache, power supplies, clock circuits, input / output circuits and subsystems, and the like.

[0282] The term "configured" may relate to the capabilities of a device, regardless of whether the device is in an operational or non-operational state. "Configured" may also refer to a particular setting in a device that results in an operational characteristic of the device, regardless of whether the device is in an operational or non-operational state. In other words, hardware, software, firmware, registers, memory values, etc., can be "configured" within a device to give the device particular characteristics, regardless of whether the device is in an operational or non-operational state.

[0283] An interface may be a hardware interface, a firmware interface, a software interface, and / or a combination thereof. A hardware interface may include connectors, wires, electronic devices, such as drivers, amplifiers, etc. A software interface may include code stored in a memory device to implement a protocol(s), protocol layer, communication driver, device driver, combinations thereof, etc. A firmware interface may include a combination of embedded hardware and code stored in and / or communicating with a memory device to implement a connection, electronic device operation, protocol(s), protocol layer, communication driver, device driver, hardware operation, combinations thereof, etc.

[0284] Although the processes and methods of the embodiments of the present disclosure may be discussed as being implemented as software routines, some of the method steps disclosed herein may be performed in hardware as well as by software running on a processor. Thus, these embodiments may be implemented in software as executed on a computer system, in hardware such as an application specific integrated circuit, or other types of hardware implementations, or in a combination of software and hardware. The software routines of the embodiments of the present disclosure may be executed on any computer operating system and may be executed using any CPU architecture.

[0285] The functionality of the various elements including functional blocks, including but not limited to those labeled or described as a "computer," "processor," or "controller," may be provided through the use of hardware, such as circuit hardware and / or hardware capable of executing software in the form of coded instructions stored on a computer-readable medium. Thus, such functionality and illustrated functional blocks are understood to be either hardware-implemented and / or computer-implemented, and thus machine-implemented.

[0286] In terms of a hardware implementation, a functional block may include or contain hardware (e.g., digital or analog) circuitry, including but not limited to a Digital Signal Processor (DSP), hardware, reduced instruction set processor, Application Specific Integrated Circuit(s) [ASIC (single or more), and / or Field Programmable Gate Array(s) (FPGA (single or more)], and (where appropriate) state machines capable of performing such functionality.

[0287] From a computer implementation perspective, a computer is generally understood to comprise one or more processors or one or more controllers, and the terms computer and processor and controller may be used interchangeably herein. When provided by a computer or processor or controller, the functionality may be provided by a single dedicated computer or processor or controller, by a single shared computer or processor or controller, or by multiple individual computers or processors or controllers, some of which may be shared or distributed. Furthermore, use of the terms "processor" or "controller" may also be construed to refer to other hardware capable of performing such functions and / or running software, such as the exemplary hardware listed above.

[0288] Also, nodes that communicate using the air interface have appropriate wireless communication circuitry. In addition, the techniques disclosed herein may further be considered to be entirely embodied in any form of computer-readable memory, such as a solid-state memory, a magnetic disk, or an optical disk, that contains an appropriate set of computer instructions that will cause a processor to implement the techniques described herein.

[0289] Furthermore, each functional block or various functions of the wireless terminal and node used in each of the above-mentioned embodiments can be implemented or performed by a circuit, which is typically an integrated circuit or multiple integrated circuits. A circuit designed to perform the functions described herein may comprise a general-purpose processor, a digital signal processor (DSP), an application specific or general-purpose application integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, or individual hardware components, or a combination thereof. A general-purpose processor may be a microprocessor, or the processor may be a conventional processor, controller, microcontroller, or state machine. The general-purpose processor or each circuit described above may be composed of digital circuits or analog circuits. Furthermore, if an integrated circuit technology emerges due to the advancement of semiconductor technology to replace the current integrated circuits, the integrated circuits using this technology may also be used.

[0290] It will be appreciated that the techniques disclosed herein are directed to solving the problems of wireless communication congestion, are necessarily rooted in computer technology, and overcome problems that arise specifically in wireless communication. Moreover, the techniques disclosed herein improve reception and transmission in telecommunication systems.

[0291] Although the above description contains many specificities, these should not be construed as limiting the scope of the technology disclosed herein, but merely providing illustrations of some of the currently preferred embodiments of the technology disclosed herein. Therefore, the scope of the technology disclosed herein should be judged by the appended claims and their legal equivalents. Thus, the scope of the technology disclosed herein fully encompasses other embodiments that may become apparent to those skilled in the art, and as a result, the scope of the technology disclosed herein is not limited to anything other than the appended claims, and it will be recognized that a singular reference to an element in a claim means "one or more," rather than "one and only one," unless expressly stated otherwise. All structural, chemical, and functional equivalents to the elements of the above preferred embodiments known to those skilled in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Moreover, it is not necessary for a device or method to address each and every problem sought to be solved by the technology disclosed herein, for a device or method to be encompassed by the claims. Furthermore, no element, component, or method step in this disclosure is intended to be offered to the public, regardless of whether that element, component, or method step is expressly recited in a claim.

Claims

1. 1. A wireless terminal for communicating over an air interface with a radio access network, comprising: from the radio access network; slot format information including a transmit direction configuration for each symbol in the slot for an uplink (UL) subband; Activation information, a receiver circuit configured to receive the a processor circuit configured to use the enabling information to enable or disable the transmit direction configuration for at least a portion of the UL subbands; Equipped with the enabling information is obtained from downlink control information including the slot format information formatted according to a DCI format; the DCI format includes an integer number N of slot format indicator (SFI) fields and a cyclic redundancy check (CRC); The enabling information is Additional fields in the DCI format, A Radio Network Temporary Identifier (RNTI) used to scramble the CRC and the additional field includes an X-bit field / bitmap, where X is an integer greater than 1, and the X-bit field / bitmap indicates either enabling or disabling of the UL subband; Each bit of the X bit field / bitmap is a slot of the UL subband; a group of Orthogonal Frequency Division Multiplexing (OFDM) symbols in the UL subband; OFDM symbols of the UL subband; a wireless terminal associated with at least one of:

2. The activation information includes the following activation targets: All of the UL subbands, a symbol of the UL subband, the slot format of which indicates a downlink direction; a symbol of the UL subband, the slot format of which indicates an uplink direction; a symbol of the UL subband in which the slot format indicates flexible direction; 2. The wireless terminal of claim 1, wherein the transmit direction configuration is used to enable or disable the transmit direction configuration for at least one of:

3. 10. The wireless terminal of claim 1, wherein the receiver circuit is further configured to receive an indication from the radio access network as to which activation targets the activation information applies.

4. 10. The wireless terminal of claim 1, wherein the DCI format includes information specifying which symbols of a slot of the UL subband are enabled or disabled.

5. 5. The wireless terminal of claim 4, wherein a format of a DCI format includes information designating symbols of a slot of the UL sub-band as being one of downlink, uplink, or flexible.

6. A wireless terminal for communicating with a radio access network over a radio interface, comprising: from the radio access network; slot format information including a transmit direction configuration for each symbol in the slot for an uplink (UL) subband; Activation information, a receiver circuit configured to receive the a processor circuit configured to use the enabling information to enable or disable the transmit direction configuration for at least a portion of the UL subbands; Equipped with the enabling information is obtained from downlink control information including the slot format information formatted according to a DCI format; The wireless terminal, wherein the validation information is obtained from a format type of the slot format information.

7. The DCI format includes an integer number N of slot format indication (SFI) fields and a cyclic redundancy check (CRC); The enabling information is Additional fields in the DCI format, A Radio Network Temporary Identifier (RNTI) used to scramble the CRC 7. The wireless terminal of claim 6, comprising at least one of:

8. The wireless terminal of claim 7, wherein the additional field includes an X-bit field / bitmap, where X is an integer greater than 1, and the X-bit field / bitmap indicates either enabling or disabling the UL subband.

9. Each bit of the X bit field / bitmap is: a slot of the UL subband; a group of Orthogonal Frequency Division Multiplexing (OFDM) symbols in the UL subband; OFDM symbols of the UL subband; 9. The wireless terminal of claim 8, wherein the wireless terminal is associated with at least one of:

10. The format type is: All of the UL subbands, a symbol of the UL subband, the slot format of which indicates a downlink direction; a symbol of the UL subband, the slot format of which indicates an uplink direction; a symbol of the UL subband in which the slot format indicates flexible direction; 7. The wireless terminal of claim 6, wherein the wireless terminal specifies enabling or disabling of at least one of:

11. The format type is DCI format 2_0, and the DCI format 2_0 type is If the UL subband is indicated as downlink in the DCI format 2_0, it is enabled, and if not, it is not activated; The UL subband is enabled if it is indicated as uplink according to the DCI format 2_0; and If the UL subband is indicated as flexible according to the DCI format 2_0, it is enabled; 7. The wireless terminal of claim 6, wherein the wireless terminal specifies one of:

12. The wireless terminal of claim 6, wherein the DCI format includes information specifying which symbols of a slot in the UL subband are enabled or disabled.

13. A wireless terminal as described in claim 6, wherein the format of the DCI format includes information specifying symbols of slots of the UL subband as being one of downlink, uplink or flexible.

14. 1. An access node of a radio access network that communicates over an air interface with a wireless terminal, comprising: The wireless terminal, slot format information including a transmit direction configuration for each symbol in the slot for an uplink (UL) subband; Activation information, a transmitter circuit configured to transmit a receiver circuit configured to receive, from the wireless terminal, information transmitted in symbols of the UL sub-band in accordance with the enabling information.

15. 15. The access node of claim 14, wherein the activation information is provided in a Downlink Control Information (DCI) format that includes slot format information.

16. The format type is: All of the UL subbands, a symbol of the UL subband, the slot format of which indicates a downlink direction; a symbol of the UL subband, the slot format of which indicates an uplink direction; a symbol of the UL subband in which the slot format indicates flexible direction; The access node of claim 14 , wherein the access node specifies enabling or disabling of at least one of the following:

17. The format type is DCI format 2_0, and the DCI format 2_0 type is If the UL subband is indicated as downlink in the DCI format 2_0, it is enabled, and if not, it is not activated; The UL subband is enabled if it is indicated as uplink according to the DCI format 2_0; and If the UL subband is indicated as flexible according to the DCI format 2_0, it is enabled; 15. The access node of claim 14, wherein the access node specifies one of:

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