Communication device, infrastructure equipment and method

Abstract

A communication device configured to transmit or receive data to or from infrastructure equipment of a wireless communication network is provided. The communication device includes a transceiver circuit configured to transmit and receive signals via a wireless access interface provided by the wireless communication network, and a controller circuit configured to, in combination with the transceiver circuit, receive one of an uplink grant and a downlink grant from one of a plurality of groups of radio resources forming a physical downlink control channel (PDCCH) of the infrastructure equipment in a first time division slot of the wireless access interface, and determine whether a specified condition is satisfied. The uplink grant indicates an allocation of radio resources forming a physical uplink shared channel (PUSCH) of the wireless access interface; the downlink grant indicates an allocation of radio resources forming a physical downlink shared channel (PDSCH) of the wireless access interface. If the specified condition is met, the controller circuitry is configured to, in combination with the transceiver circuitry, determine one of an allocation of radio resources to form a physical uplink shared channel from the uplink grant and an allocation of radio resources to form a physical downlink shared channel from the downlink grant based on at least a first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between a specified point associated with a physical downlink control channel (PDCCH) in which one of the uplink grant and the downlink grant is received and a first symbol of one of a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH). If the specified condition is not met, the controller circuitry is configured to, in combination with the transceiver circuitry, determine one of an allocation of radio resources to form a physical uplink shared channel from the uplink grant and an allocation of radio resources to form a physical downlink shared channel from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between a start of a first time division slot and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel.

Description

Technical Field

[0001] The present disclosure relates to a communication device, infrastructure equipment, and a method for transmitting data by the communication device in a wireless communication network.

[0002] This application claims Paris Convention priority from European Patent Application No. EP19183677, the content of which is incorporated herein by reference. Background Art

[0003] The "Background" description provided herein is intended to generally introduce the context of the present disclosure. No admission is made, either explicitly or implicitly, that any of the work of the presently named inventors, or any other description that may not qualify as prior art against the present invention, is made to the extent described in this Background section and that such work is not prior art at the time of filing.

[0004] Third- and fourth-generation mobile telecommunication systems, such as those based on the Universal Mobile Telecommunications System (UMTS) and Long Term Evolution (LTE) architectures defined by the 3rd Generation Mobile Communications Partnership Project (3GPP), are capable of supporting more complex services than the simple voice and messaging services provided by previous generations of mobile telecommunication systems. For example, the improved radio interface and enhanced data rates provided by LTE systems enable users to enjoy high-data-rate applications, such as mobile video streaming and mobile video conferencing, which were previously only available through fixed-line data connections. Consequently, the demand for deploying such networks is strong, and the coverage areas of these networks—that is, the geographic locations where the networks can be accessed—are expected to increase even more rapidly.

[0005] It is anticipated that future wireless communication networks will be expected to routinely and efficiently support communications with a wider range of devices associated with a wider range of data traffic profiles and types than current systems are optimized to support. For example, it is anticipated that future wireless communication networks will be expected to efficiently support communications with devices including reduced complexity devices, machine type communication (MTC) devices, high-resolution video displays, virtual reality headsets, and the like. Some of these different types of devices may be deployed in large numbers, such as low-complexity devices used to support the "Internet of Things," and may typically be associated with the transmission of relatively small amounts of data with relatively high delay tolerance.

[0006] In light of this, it is expected that future wireless communication networks, such as those that may be referred to as 5G or New Radio (NR) systems / New Radio Access Technology (RAT) systems [1], as well as future iterations / releases of existing systems, can effectively support the connectivity of a wide variety of devices associated with different applications and different characteristic data traffic profiles.

[0007] One example of a new service is called Ultra-Reliable Low-Latency Communication (URLLC) service, which, as the name suggests, requires data units or packets to be communicated with high reliability and low communication latency. Therefore, the URLLC type of service is a challenging example for both LTE-type communication systems and 5G / NR communication systems.

[0008] The increasing use of different types of network infrastructure equipment and end devices associated with different traffic profiles creates new challenges for effectively handling communications that need to be addressed in wireless communication systems. Summary of the Invention

[0009] The present disclosure may help solve or alleviate at least some of the problems discussed above.

[0010] Embodiments of the present technology may provide a communication device configured to transmit or receive data to or from infrastructure equipment of a wireless communication network. The communication device includes a transceiver circuit configured to transmit and receive signals via a wireless access interface provided by the wireless communication network, and a controller circuit configured to, in combination with the transceiver circuit, receive an uplink grant and a downlink grant from the infrastructure equipment in a first time-division time slot of the wireless access interface, wherein the uplink grant indicates an allocation of radio resources forming a physical uplink shared channel (PUSCH) of the wireless access interface and the downlink grant indicates an allocation of radio resources forming a physical downlink shared channel (PDSCH) of the wireless access interface, and determine whether a specified condition is met. If the specified condition is met, the controller circuitry is configured to, in combination with the transceiver circuitry, determine one of an allocation of radio resources to form a physical uplink shared channel from the uplink grant and an allocation of radio resources to form a physical downlink shared channel from the downlink grant based on at least a first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between a specified point associated with a physical downlink control channel in which one of the uplink grant and the downlink grant is received and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel. If the specified condition is not met, the controller circuitry is configured to, in combination with the transceiver circuitry, determine one of an allocation of radio resources to form a physical uplink shared channel from the uplink grant and an allocation of radio resources to form a physical downlink shared channel from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between a start of a first time division slot and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel.

[0011] Embodiments of the present technology further relate to infrastructure equipment, methods of operating communication devices and infrastructure equipment, and circuits for communication devices and infrastructure equipment, allowing for improved resource efficiency for ultra-reliable low-latency communication (URLLC) and enhanced ultra-reliable low-latency communication (eURLLC) services because more scheduling opportunities are provided in each time slot, thereby increasing latency, without increasing the size of downlink control information (DCI) used to carry downlink (DL) grants or uplink (UL) grants.

[0012] Various aspects and features of the present disclosure are defined in the following claims.

[0013] It should be understood that the above general description and the following detailed description are exemplary rather than restrictive of the present technology. The described embodiments and further advantages will be best understood by referring to the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] A more complete understanding of the present disclosure and many of its attendant advantages will be readily obtained by referring to the following detailed description when considered in conjunction with the accompanying drawings, in which like reference numerals designate like or corresponding parts throughout the several views, and in which:

[0015] Figure 1 schematically represents some aspects of a Long Term Evolution (LTE) type wireless telecommunications system that may be configured to operate in accordance with certain embodiments of the present disclosure;

[0016] Figure 2 schematically represents some aspects of a new radio access technology (RAT) wireless telecommunications system that may be configured to operate in accordance with certain embodiments of the present disclosure;

[0017] Figure 3 is a schematic block diagram of example infrastructure equipment and communications devices that may be configured to operate in accordance with certain embodiments of the present disclosure;

[0018] Figure 4 The figure shows the physical downlink shared channel (PDSCH) time domain resource allocation (TDRA) parameters K0, S and L;

[0019] Figure 5 The figure shows the physical uplink shared channel (PUSCH) time domain resource allocation (TDRA) parameters K2, S and L;

[0020] Figure 6 A first physical downlink shared channel scheduling example is shown, where one symbol is allocated to the physical downlink shared channel after a downlink grant, where K0=0, S=3, and L=4;

[0021] Figure 7 A second physical downlink shared channel scheduling example is shown, where two physical downlink shared channels are allocated one symbol after their respective downlink grants, where K0=0, S=3, L=4 for the first physical downlink shared channel, and K0=0, S=10, L=4 for the second physical downlink shared channel;

[0022] Figure 8 A third physical downlink shared channel scheduling example is shown, where an offset symbol S' relative to the start of the physical downlink control channel (PDCCH) causes the physical downlink shared channel to cross a slot boundary;

[0023] Figure 9 A fourth physical downlink shared channel scheduling example is shown, where two time domain resource allocation entries are used to allocate a single physical downlink shared channel in the next time slot;

[0024] Figure 10 shows a partially schematic, partially message flow diagram of a wireless communication network including a communication apparatus and infrastructure equipment according to an embodiment of the present technology;

[0025] Figure 11 shows an example of different reference points where time domain resource allocation may have a parameter S according to an embodiment of the present technology;

[0026] Figure 12 A first example according to an embodiment of the present technology is shown, in which the parameter S may be reinterpreted when the physical downlink shared channel crosses a slot boundary;

[0027] Figure 13 A second example according to an embodiment of the present technology is shown, in which the parameter S may be reinterpreted when the physical downlink shared channel crosses a slot boundary;

[0028] Figure 14 An example is shown in which a physical downlink shared channel may be truncated according to an embodiment of the present technology; and

[0029] Figure 15 A flow chart illustrating a communication process in a communication system according to an embodiment of the present technology is shown. DETAILED DESCRIPTION

[0030] Long Term Evolution Advanced Radio Access Technology (4G)

[0031] Figure 1A schematic diagram is provided illustrating some basic functionality of a mobile telecommunications network / system 10 that generally operates according to Long Term Evolution (LTE) principles, but which may also support other radio access technologies and may be suitable for implementing disclosed embodiments as described herein. Figure 1 Certain aspects of the various elements of a telecommunication network and their respective modes of operation are well known and defined in the relevant standards administered by the 3rd Generation Partnership Project (3GPP) (factory version) body and are also described in a number of books on the subject, for example, Holma H and Toskala A [2]. It will be understood that aspects of the operation of a telecommunication (or simply, communication) network discussed herein that are not specifically described (for example, with respect to specific communication protocols and physical channels used for communication between the various elements) may be implemented in accordance with any known techniques, for example in accordance with the relevant standards and known modifications and supplements to the relevant standards.

[0032] Network 100 includes multiple base stations 101 connected to a core network 102. Each base station provides a coverage area 103 (i.e., a cell) within which data can be communicated with terminal devices 104. Data is transmitted from base stations 101 to terminal devices 104 within their respective coverage areas 103 via a radio downlink (DL). Data is transmitted from terminal devices 104 to base stations 101 via a radio uplink (UL). Core network 102 routes data to and from terminal devices 104 via respective base stations 101 and provides functions such as authentication, mobility management, and billing. Terminal devices may also be referred to as mobile stations, user equipment (UE), user terminals, mobile radios, communication devices, etc. Base stations, as examples of network infrastructure equipment / network access nodes, may also be referred to as transceiver stations / node base stations (nodeBs), e-node base stations (e-nodeBs), e-node base stations (eNBs), g-node base stations (g-nodeBs), g-node base stations (gNBs), etc. In this regard, different terms are often associated with different generations of wireless telecommunications systems for elements that provide broadly comparable functionality. However, certain embodiments of the present disclosure can be implemented equally across different generations of wireless telecommunications systems, and for simplicity, certain terms may be used regardless of the underlying network architecture. That is, the use of specific terms in connection with certain example embodiments is not intended to limit these embodiments to a particular generation of networks to which that specific term may be most relevant.

[0033] New Radio Access Technology (5G)

[0034] Figure 2is a schematic diagram illustrating the network architecture of a new radio access technology (RAT) wireless communication network / system 200 based on a previously proposed approach, which may also be applicable to provide functionality according to the disclosed embodiments described herein. Figure 2 The new radio access technology (RAT) network 200 represented in the figure includes a first communication cell 201 and a second communication cell 202. Each communication cell 201, 202 includes a control node (centralized unit) 221, 222 that communicates with the core network component 210 via corresponding wired or wireless links 251, 252. Each control node 221, 222 also communicates with multiple distributed units (radio access nodes / remote transmission and reception points (TRP)) 211, 212 in their respective cells. Again, these communications can be carried out via corresponding wired or wireless links. The distributed units (DU) 211, 212 are responsible for providing a radio access interface for communication devices connected to the network. Each distributed unit 211, 212 has a coverage area (radio access coverage area) 241, 242, where the sum of the coverage areas of the distributed units under the control of the control node together defines the coverage range of each communication cell 201, 202. Each distributed unit 211 , 212 includes a transceiver circuit for transmission and reception of wireless signals and a processor circuit configured to control the respective distributed unit 211 , 212 .

[0035] In terms of broad top-level functions, Figure 2 The core network component 210 of the new radio access technology communication network represented in FIG can be broadly considered to correspond to Figure 1 The core network 102 shown in FIG. 1 , and the corresponding control nodes 221 , 222 and their associated distributed units / remote transmission and reception points 211 , 212 can be broadly considered to provide a corresponding Figure 1 The term network infrastructure equipment / access node may be used to encompass these elements as well as the more traditional base station type elements of a wireless communication system. Depending on the application at hand, the responsibility for scheduling transmissions over the radio interface between the various distributed units and the communication devices may lie with the control node / centralized unit and / or the distributed units / remote transmission and reception points (TRPs).

[0036] The communication device or user equipment (UE) 260 is Figure 2, indicating that it is within the coverage area of the first communication cell 201. The communication device 260 can therefore exchange signaling with the first control node 221 in the first communication cell via one of the distributed units 211 associated with the first communication cell 201. In some cases, communications of a given communication device are routed through only one of the distributed units, but it will be appreciated that in some other embodiments, communications associated with a given communication device can be routed through multiple distributed units, such as in soft handover scenarios and other scenarios.

[0037] exist Figure 2 In the example, for simplicity, two communication cells 201, 202 and one communication device 260 are shown, but it can be understood that in fact the system can include a larger number of communication cells (each communication cell is supported by its own control node and multiple distributed units) to provide services for a large number of communication devices.

[0038] It should also be understood that Figure 2 This represents only one example of a proposed architecture for a new radio access technology (RAT) communication system in which the methods according to the principles described herein may be employed, and the functionality disclosed herein may also be applicable to wireless communication systems having different architectures.

[0039] Therefore, according to various frameworks, e.g. Figure 1 and Figure 2 The example architecture shown in , example embodiments of the present disclosure as discussed herein may be implemented in a wireless telecommunications system / network. It will therefore be understood that the particular wireless communication architecture in any given embodiment is not of primary significance to the principles described herein. In this regard, example embodiments of the present disclosure may be described generally in the context of communications between network infrastructure equipment / access nodes and communication devices, where the specific nature of the network infrastructure equipment / access nodes and communication devices will depend on the network infrastructure implemented at hand. For example, in some scenarios, the network infrastructure equipment / access nodes may include base stations, such as Figure 1 , which is adapted to provide functionality according to the principles described herein, and in other examples, network infrastructure equipment / access nodes may include a Long Term Evolution (LTE) type base station 101. Figure 2 Control units / control nodes 221, 222 and / or remote transmission and reception points (TRP) 211, 212 of the type shown are adapted to provide functionality according to the principles described herein.

[0040] Figure 3 A more detailed illustration of a user equipment (UE) 270 and example network infrastructure equipment 272 is presented in FIG, which can be considered as a combination of a g-node base station (gNB) 101 or control node 221 and a remote transmit and receive point (TRP) 211. Figure 3 As shown, user equipment (UE) 270 is shown transmitting uplink data to infrastructure equipment 272 via resources of a wireless access interface, generally as indicated by arrow 274. User equipment (UE) 270 may similarly be configured to receive downlink data transmitted by infrastructure equipment 272 via resources of a wireless access interface (not shown). Figure 1 and Figure 2 Likewise, the infrastructure equipment 272 is connected to the core network 276 via an interface 278 connected to a controller 280 of the infrastructure equipment 272. The infrastructure equipment 272 includes a receiver 282 connected to an antenna 284 and a transmitter 286 connected to the antenna 284. Correspondingly, the user equipment (UE) 270 includes a controller 290 connected to a receiver 292, from which the receiver 292 receives signals, and a transmitter 296 also connected to the antenna 294.

[0041] The controller 280 is configured to control the infrastructure equipment 272 and may include processor circuitry that may in turn include various subunits / subcircuits for providing functionality as further explained herein. These subunits may be implemented as discrete hardware elements or as appropriately configured functions of the processor circuitry. Thus, the controller 280 may include circuitry that is appropriately configured / programmed to provide the desired functionality using conventional programming / configuration techniques for devices in wireless telecommunications systems. The transmitter 286 and receiver 282 may include signal processing and radio frequency filters, amplifiers, and circuitry according to conventional arrangements. For ease of presentation, the transmitter 286, receiver 282, and controller 280 are shown in FIG. Figure 3 272 are schematically shown as separate elements. However, it should be understood that the functionality of these elements can be provided in a variety of different ways, such as using one or more appropriately programmed programmable computers, or one or more appropriately configured application specific integrated circuits / circuitry / chips / chip sets. It will be understood that infrastructure equipment 272 will generally include various other elements associated with its operational functionality.

[0042] Accordingly, the controller 290 of the user equipment (UE) 270 is configured to control the transmitter 296 and the receiver 292 and may include processor circuitry that, in turn, may include various subunits / subcircuits for providing the functionality as further explained herein. These subunits may be implemented as discrete hardware elements or as appropriately configured functions of the processor circuitry. Thus, the controller 290 may include circuitry that is appropriately configured / programmed to provide the desired functionality using conventional programming / configuration techniques for devices in wireless telecommunications systems. Likewise, the transmitter 296 and receiver 292 may include signal processing and radio frequency filters, amplifiers, and circuitry according to conventional arrangements. For ease of presentation, the transmitter 296, receiver 292, and controller 290 are shown in FIG. Figure 3 270 are schematically shown as separate elements. However, it will be appreciated that the functionality of these elements may be provided in a variety of different ways, such as using one or more appropriately programmed programmable computers, or one or more appropriately configured application specific integrated circuits / circuitry / chips / chip sets. It will be appreciated that the communication device 270 typically includes various other elements associated with its operational functionality, such as a power supply, user interface, etc., but for simplicity these are not shown. Figure 3 Shown in.

[0043] The controllers 280, 290 may be configured to execute instructions stored on a computer readable medium such as a non-volatile memory. The process steps described herein may be performed by, for example, a microprocessor in conjunction with random access memory, operating according to instructions stored on a computer readable medium.

[0044] New Radio Access Technology (5G) and enhanced Ultra-Reliable Low-Latency Communications (eURLLC)

[0045] It is expected that systems incorporating New Radio (NR) technology will support different services (or service types), which may be characterized by different requirements for latency, data rate and / or reliability. For example, enhanced mobile broadband (eMBB) services are characterized by high capacity and require support for up to 20Gb / s. Ultra-reliable low latency communication (URLLC) services require 1-10 -5 (99.999%) or better reliability, delivering 32-byte packets with 1ms user plane latency [3]. In some cases, 1-10 -6 (99.9999%) or higher reliability. Massive machine-type communication (mMTC) is another example of a service that can be supported by a new radio (NR)-based communication network. In addition, the system may be expected to support further enhancements related to the Industrial Internet of Things (IIoT) to support services with new requirements such as high availability, high reliability, low latency, and in some cases, high-precision positioning.

[0046] Enhanced Ultra Reliable Low Latency Communication (eURLLC) [4] specifies functions that require high reliability and low latency, such as factory automation, transportation industry, power distribution, etc. One of the goals of enhanced Ultra Reliable Low Latency Communication (eURLLC) is to enhance the physical downlink control channel (PDCCH), which aims to design compact downlink control information (DCI) and increase the monitoring capabilities of Ultra Reliable Low Latency Communication (URLLC), User Equipment (UE) and Physical Downlink Control Channel (PDCCH) to achieve a shorter Physical Downlink Control Channel (PDCCH) period.

[0047] The resources occupied by the Physical Downlink Shared Channel (PDSCH) and Physical Uplink Shared Channel (PUSCH) can be dynamically allocated by the g-node base station (gNB) using downlink (DL) grants and uplink (UL) grants respectively, which are carried by the Downlink Control Information (DCI).

[0048] Indicated in the Frequency Domain Resource Allocation (FDRA) and Time Domain Resource Allocation (TDRA) fields. The Frequency Domain Resource Allocation (FDRA) indicates the number and location of physical resource blocks (PRBs) occupied by the Physical Downlink Shared Channel (PDSCH) or Physical Uplink Shared Channel (PUSCH). The Time Domain Resource Allocation (TDRA) is an index into the Time Domain Resource Allocation (TDRA) lookup table, where each entry contains information about the Physical Downlink Shared Channel (PDSCH) / Physical Uplink Shared Channel (PUSCH) transmission, such as the start of the transmission, the duration of the transmission, the mapping type, and the demodulation reference signal (DMRS) position. The start and duration parameters allow for flexible allocation of time resources in new radio access technology (5G). The entries in the Time Domain Resource Allocation (TDRA) table are semi-statically configured by the Radio Resource Control (RRC), and the table size can be up to 16 entries.

[0049] For the physical downlink shared channel (PDSCH), the parameters in the time domain resource allocation (TDRA) table are the demodulation reference signal (DMRS) position, the physical downlink shared channel (PDSCH) mapping type (A or B), the time slot gap K0 between the downlink grant and the physical downlink shared channel (PDSCH), the physical downlink shared channel (PDSCH) start symbol offset from the time slot boundary S, and the duration of the physical downlink shared channel (PDSCH) L. Figure 4An example of a time domain resource allocation (TDRA) for the physical downlink shared channel (PDSCH) is shown, where a downlink grant is sent to a user equipment (UE) at time t0 using a physical downlink control channel (PDCCH) that ends at time t1 in time slot n. The time domain resource allocation (TDRA) for the downlink grant points to an entry in the time domain resource allocation (TDRA) lookup table that indicates parameters K0 = 2, S = 7, and L = 7. Since the downlink grant is in time slot n, the physical downlink shared channel (PDSCH) begins in time slot n+K0, i.e., slot n+2. The symbol offset from the slot boundary of time slot n+2 is indicated in parameter S; in this case, it is 7 symbols from the slot boundary, i.e., the physical downlink shared channel (PDSCH) begins at time t4. The duration of the physical downlink shared channel (PDSCH) is L = 7 symbols. Therefore, the time domain resource allocation (TDRA) parameter indicates the physical downlink shared channel (PDSCH) transmission between time t4 and t5, such as Figure 4 shown.

[0050] Similarly, for the physical uplink shared channel (PUSCH), the parameters in the time domain resource allocation (TDRA) table are the physical uplink shared channel (PUSCH) mapping type (A or B), the time slot gap K2 between the uplink grant and the physical uplink shared channel (PUSCH), the physical uplink shared channel (PUSCH) start symbol offset from the time slot boundary S, and the duration of the physical uplink shared channel (PUSCH) L. Figure 5 An example of time domain resource allocation (TDRA) for the physical uplink shared channel (PUSCH) is shown, where an uplink (UL) grant is sent to a user equipment (UE) at time t0 using a physical downlink control channel (PDCCH) that ends at time t1 in time slot n. The time domain resource allocation (TDRA) for the uplink (UL) grant points to an entry in the time domain resource allocation (TDRA) lookup table that indicates parameters K2 = 2, S = 4, and L = 8. Since the uplink (UL) grant is in time slot n, the physical uplink shared channel (PUSCH) begins in time slot n+K2, i.e., slot n+2. The symbol offset from the slot boundary of time slot n+2 is indicated in parameter S; in this case, it is 4 symbols from the slot boundary, i.e., the physical uplink shared channel (PUSCH) begins at time t4. The duration of the physical downlink shared channel (PDSCH) is L = 8 symbols. Therefore, the time domain resource allocation (TDRA) parameter indicates the physical uplink shared channel (PUSCH) transmission between time t4 and t5, such as Figure 5 shown.

[0051] In Rel-15, delay-insensitive services, such as enhanced mobile broadband (eMBB), have a scheduling period (i.e., physical downlink control channel (PDCCH) monitoring period) of one or more time slots. Therefore, the time domain resource allocation (TDRA) table provides a flexible way to allocate physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH). However, for ultra-reliable low latency communication (URLLC), the physical downlink control channel (PDCCH) monitoring period is shorter than one time slot (e.g., every 2 symbols or half a time slot) to provide more scheduling opportunities, thereby reducing the delay in scheduling physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH). It was recognized in the 3rd Generation Partnership Project (3GPP) that the existing time domain resource allocation (TDRA) parameters are not efficient for ultra-reliable low latency communication (URLLC), where the physical downlink control channel (PDCCH) monitoring period is short and the physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH) may be allocated close to the physical downlink control channel (PDCCH) (in time). To explain this, consider an example where the ultra-reliable low latency communication (URLLC) physical downlink shared channel (PDSCH) (or physical uplink shared channel (PUSCH)) needs to be transmitted within 1 symbol of a downlink (DL) grant (or uplink (UL) grant), such as Figure 6 As shown, the corresponding time domain resource allocation (TDRA) parameters are K0=0, S=3 and L=4. However, if the physical downlink control channel (PDCCH) monitoring period is every 7 symbols (half a time slot), then in order to have the same physical downlink shared channel (PDSCH) allocation, which starts 1 symbol after the downlink (DL) grant, two entries are required, namely one entry with K0=0, S=3 and L=4 and another entry with K0=0, S=10 and L=4, as shown in FIG. Figure 7As shown. That is, the same physical downlink shared channel (PDSCH) allocation requires multiple time domain resource allocation (TDRA) entries, each of which is for a different physical downlink control channel (PDCCH) monitoring opportunity. Therefore, the shorter the physical downlink control channel (PDCCH) monitoring period, the more time domain resource allocation (TDRA) entries are required to schedule the low-latency physical downlink shared channel (PDSCH) (or physical uplink shared channel (PUSCH)). As mentioned above, the time domain resource allocation (TDRA) has a maximum of 16 entries in Rel-15. If the physical downlink control channel (PDCCH) monitoring period is every 2 symbols (i.e., 7 physical downlink control channel (PDCCH) opportunities per time slot), then a single physical downlink shared channel (PDSCH) that needs to start 1 symbol after the downlink (DL) grant will occupy 7 entries in the time domain resource allocation (TDRA) table, leaving only 9 entries for other allocations. The time domain resource allocation (TDRA) table can be increased to accommodate different physical downlink control channel (PDCCH) monitoring opportunities, but this will increase the downlink control information (DCI) size, which runs counter to the goals of the enhanced ultra-reliable low-latency communications (eURLLC) work item.

[0052] Recognizing the inefficiency of using Rel-15 Time Domain Resource Allocation (TDRA) parameters for low-latency services such as Ultra-Reliable Low Latency Communication (URLLC), in some known proposals [5], [6], the parameter S refers to the start or end symbol of the Physical Downlink Control Channel (PDCCH) instead of the start of the slot boundary, which will reduce the number of Time Domain Resource Allocation (TDRA) entries used for different Physical Downlink Control Channel (PDCCH) monitoring occasions. For example, let S' be the offset symbol relative to the start of the Physical Downlink Control Channel (PDCCH), then for Figure 7 In the example in , in the 7-symbol physical downlink control channel (PDCCH) period, the physical downlink shared channel (PDSCH) is allocated 1 symbol after the end of the physical downlink control channel (PDCCH), with only one entry, where S'=3 is required for both physical downlink control channel (PDCCH) monitoring opportunities (from Figure 7 The time t0 and t3 start, as Figure 8 However, it has been argued that using S relative to the PDCCH monitoring timing may result in the PDSCH or PUSCH crossing a slot boundary. For example, if we want a PDSCH that starts 1 symbol after the PDCCH, as in Figure 8In the example above, we can use S'=3, but if the PDSCH duration L=7 symbols, then the second PDCCH starting at time t3 will schedule a PDSCH across the slot boundary, as Figure 8 As shown, the physical downlink shared channel (PDSCH) starting at time t5 (S'=3 symbols starting from the physical downlink control channel (PDCCH) at time t3) spans slots n and n + 1. Therefore, parameter K0 will be redundant.

[0053] Another disadvantage of using a reference such as S' (relative to the start or end of the PDCCH) is that if the gNB schedules the PDSCH or PUSCH at a specific start point in the next time slot, multiple entries need to be made in the TDRA table for each PDCCH monitoring opportunity. Figure 9 In this example, a gNB wishes to allocate a physical downlink shared channel (PDSCH) in the next slot, offset by two symbols from the slot boundary. If the S' parameter references the start of the PDCCH, the gNB requires two entries for this purpose, one for each PDCCH monitoring opportunity. That is, for the PDCCH starting at time t0, the gNB requires one time domain resource allocation (TDRA) entry with S'=16 and L=4, and another time domain resource allocation (TDRA) entry with S'=9 and L=4 for the PDCCH starting at time t2. In contrast, conventional approaches require only a single entry with K0=1, S=2, and L=4 for both PDCCH monitoring opportunities.

[0054] Time Domain Resource Reference in Ultra-Reliable Low Latency Communication (URLLC)

[0055] Figure 10A partially schematic, partial message flow diagram representation of a wireless communication network including a communication device 1001 and infrastructure equipment 1002, according to an embodiment of the present technology, is shown. The communication device 1001 is configured to send data to or receive data from the infrastructure equipment 1002. The communication device 1001 and the infrastructure equipment 1002 each include a transceiver (or transceiver circuitry) 1001.1, 1002.1 and a controller (or controller circuitry) 1001.2, 1002.2. Each of the controllers 1001.2, 1002.2 may be, for example, a microprocessor, a central processing unit (CPU), a dedicated chipset, or the like.

[0056] The transceiver circuit 1001.1 and the controller circuit 1001.2 of the communication device 1001 are configured in combination to receive 1004 an uplink grant and a downlink grant from one of a plurality of groups of radio resources forming a physical downlink control channel (PDCCH) in a first time division slot of a wireless access interface from the infrastructure equipment 1002; the uplink grant indicating one of an allocation of radio resources forming a physical uplink shared channel (PUSCH) of the wireless access interface; the downlink grant indicating an allocation of radio resources forming a physical downlink shared channel (PDSCH) of the wireless access interface, and to determine 1006 whether a specified condition is met. If a specified condition has been met, the controller circuit 1001.2 in combination with the transceiver circuit 1001.1 is configured to determine 1008 one of an allocation of radio resources forming a physical uplink shared channel (PUSCH) from an uplink grant and an allocation of radio resources forming a physical downlink shared channel (PDSCH) from a downlink grant based on at least a first parameter, wherein the communication device 1001 is configured to interpret the value of the first parameter as indicating a specified point associated with a physical downlink control channel (PDCCH) in which one of the uplink grant and the downlink grant is received and a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH). The controller circuit 1001.2 is configured in combination with the transceiver circuit 1001.1 to determine 1008 forming one of a radio resource allocation for a physical uplink shared channel (PUSCH) from an uplink grant and a radio resource allocation for a physical downlink shared channel (PDSCH) from a downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating the start of the first time division slot and the number of symbols between the first symbol of one of the physical uplink shared channel (PUSCH) and the physical downlink shared channel (PDSCH).

[0057] Thereafter, the controller circuit 1001.2 is configured in combination with the transceiver circuit 1001.1 and may then be configured to send uplink data in the determined radio resources forming the physical uplink shared channel (PUSCH) or to receive downlink data in the determined radio resources forming the physical downlink shared channel (PDSCH).

[0058] In essence, embodiments of the present technology provide a first parameter, such as a time domain resource allocation (TDRA) parameter S, although in some arrangements described below, the first parameter is a new time domain resource allocation (TDRA) parameter that should be interpreted differently by a user equipment (UE) based on some specified conditions. The communication device can be configured to receive an indication of an index into a lookup table, determine a value for the first parameter (e.g., S) from the lookup table based on the indicated index, and determine from the lookup table based on the indicated index whether the value of the first parameter indicates the number of symbols between a specified point associated with a physical downlink control channel (PDCCH) and a first symbol of one of a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH), or whether the value of the first parameter indicates the number of symbols between the start of a first time division slot and the first symbol of one of a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH). However, alternatively, the first parameter can be received from an infrastructure device or indicated by the infrastructure device in another manner to become part of a time domain resource allocation (TDRA) lookup table to which the infrastructure device indicates the index.

[0059] In an arrangement of an embodiment of the present technology, the specified condition is the value of the time slot offset, i.e., K0 for the physical downlink shared channel (PDSCH) or K2 for the physical uplink shared channel (PUSCH). In other words, the specified condition is the value of a second parameter, wherein the second parameter indicates the number of time division slots from the first time division slot of the wireless access interface to the second time division slot of the wireless access interface, and one of the physical downlink shared channel (PDSCH) and the physical uplink shared channel (PUSCH) is located in the second time division slot. That is, if the time slot offset is zero (i.e., K0=0 or K2=0), the parameter S reference is related to a specific physical downlink control channel (PDCCH) point (e.g., the start or end of the physical downlink control channel (PDCCH), which will be discussed further below), although another value of the time slot offset can be used according to this arrangement. Otherwise, the parameter S reference is related to the time slot boundary. For example, consider the two time domain resource allocation (TDRA) entries in Table I. For Figure 11The physical downlink control channel (PDCCH) starts at time t1 in the time domain, and the physical downlink shared channel (PDSCH) with index 0 and index 1 are marked as #0 and #1 respectively. For time domain resource allocation (TDRA) index 0, K0=0, so S (marked as S 0) is interpreted as being an offset relative to the start of the PDCCH, i.e., the PDCCH point is the start of the PDCCH transmission. It should be noted and understood by those skilled in the art that this arrangement also applies if the reference is the end of the PDCCH or any other designated point associated with the PDCCH. Thus, a PDSCH using a TDRA index of 0 will start at time t3, as Figure 11 As shown. For time domain resource allocation (TDRA) index 1, K0=1, so S (labeled S1) is interpreted as an offset relative to the start of the time slot boundary of the time slot indicated by K0. Therefore, the physical downlink shared channel (PDSCH) using time domain resource allocation (TDRA) index 1 will start at time t5, as shown Figure 11 As shown. Those skilled in the art will understand that although Figure 11 The example in shows the scheduling of the physical downlink shared channel (PDSCH), but this arrangement is also applicable to the scheduling of the physical uplink shared channel (PUSCH). The same is true for all other arrangements and embodiments in this disclosure; those described by the physical downlink shared channel (PDSCH) are also applicable to the physical uplink shared channel (PUSCH), and vice versa.

[0060] Table I: Time Domain Resource Allocation (TDRA) Table

[0061]

[0062]

[0063] In another arrangement of an embodiment of the present technology, if the resulting physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH) does not cross a time slot boundary, the parameter S is associated with a physical downlink control channel (PDCCH) point. Otherwise, if the use of S associated with a physical downlink control channel (PDCCH) point causes the physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH) to cross a time slot boundary, then S=0, i.e., the physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH) starts at the beginning of the next time slot. In other words, the specified condition is whether one of the physical uplink shared channel (PUSCH) and the physical downlink shared channel (PDSCH) is completely contained within a single time division slot of the wireless access interface. If the specified condition is not met, the value of the first parameter is 0, and the communication device is configured to determine whether one of the physical uplink shared channel (PUSCH) and the physical downlink shared channel (PDSCH) is contained in a time division slot that is subsequent in time to the first time division slot. An example such as Figure 12 As shown, the parameter S here is the offset symbol relative to the end of the physical downlink control channel (PDCCH) transmission (it should be noted that this is to indicate that S can be relative to other points of the physical downlink control channel (PDCCH) rather than the beginning of the physical downlink control channel (PDCCH), such as Figure 11 As shown, again this is not limiting). Here, two downlink (DL) grants, carried by downlink control information (DCI) #1 and downlink control information (DCI) #2, are transmitted to a user equipment (UE), where in each downlink (DL) grant, the time domain resource allocation (TDRA) index points to the entry in the time domain resource allocation (TDRA) table with K0=0, S=1, and L=7. Downlink control information (DCI) #1 is transmitted at time t0 and ends at time t1, and the corresponding physical downlink shared channel (PDSCH) #1 starts at t2 and ends at t5. Since physical downlink shared channel (PDSCH) #1 does not cross time slot boundaries, S is related to the end of downlink control information (DCI) #1 (physical downlink control channel (PDCCH)). Downlink control information (DCI) #2 is transmitted between time t3 and t4, and if S is associated with the end of downlink control information (DCI) #2, then the corresponding physical downlink shared channel (PDSCH) #2 will occupy time t5 to t7, thereby crossing the time slot boundary at time t6. According to this arrangement, since physical downlink shared channel (PDSCH) #2 crosses the time slot boundary, S is reinterpreted as S=0 in the next time slot, that is, time slot n+1, resulting in physical downlink shared channel (PDSCH) #2 being transmitted between time t6 and t8. It should also be understood that, as described above, although Figure 12 The examples in describe the physical downlink shared channel (PDSCH), but the arrangement is also applicable to the physical uplink shared channel (PUSCH).

[0064] In another arrangement of an embodiment of the present technology, if the resulting physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH) does not cross a time slot boundary, the parameter S is related to a physical downlink control channel (PDCCH) point. Otherwise, if the use of S related to the physical downlink control channel (PDCCH) point causes the physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH) to cross a time slot boundary, S is interpreted as being increased by 1 relative to the next time slot boundary, i.e., K0. In other words, the specified condition is whether one of the physical uplink shared channel (PUSCH) and the physical downlink shared channel (PDSCH) is completely contained within a single time division slot of the wireless access interface. If the specified condition is not met, the value of the first parameter is the same as the value of the first parameter when the specified condition is met, and the communication device is configured to determine whether one of the physical uplink shared channel (PUSCH) and the physical downlink shared channel (PDSCH) is contained in a time division slot that is subsequent in time to the first time division slot. Figure 13 An example is shown in , where S is the offset symbol relative to the end of the Physical Downlink Control Channel (PDCCH) transmission. Figure 12 Similarly, in the example shown, two downlink (DL) grants, carried by downlink control information (DCI) #1 and downlink control information (DCI) #2, are transmitted to a user equipment (UE), where in each downlink (DL) grant, the time domain resource allocation (TDRA) index points to the entry in the time domain resource allocation (TDRA) table with K0 = 0, S = 1, and L = 7. Downlink control information (DCI) #1 is transmitted at time t0 and ends at time t1, and the corresponding physical downlink shared channel (PDSCH) #1 starts at t2 and ends at t5. Since physical downlink shared channel (PDSCH) #1 does not cross a time slot boundary, S is relative to the end of downlink control information (DCI) #1 (physical downlink control channel (PDCCH)). Downlink control information (DCI) #2 is transmitted between times t3 and t4. If S is associated with the end of downlink control information (DCI) #2, then the corresponding physical downlink shared channel (PDSCH) #2 will occupy times t5 to t8, thus crossing the time slot boundary at time t6. According to this arrangement, since physical downlink shared channel (PDSCH) #2 crosses the time slot boundary, S is interpreted as relating to the next time slot, that is, slot n+1 (K0=1), resulting in physical downlink shared channel (PDSCH) #2 occupying times t7 and t9.

[0065] In another arrangement of an embodiment of the present technology, a new time domain resource allocation (TDRA) parameter is introduced, which can be labeled M (or indeed any other label can be used), where M is the number of offset symbols relative to the physical downlink control channel (PDCCH) point. The existing S parameter follows the traditional interpretation, i.e. relative to the start of the time slot boundary. A dynamic indicator indicates whether the user equipment (UE) uses S or M for the physical downlink shared channel (PDSCH) or the physical uplink shared channel (PUSCH). In other words, the specified condition is the value of the dynamic indicator received by the communication device from the infrastructure equipment. The indicator can be a new field in the downlink control information (DCI) or it can be implicitly indicated (for example, using a different radio network temporary identifier (RNTI)). An example is shown in Table II, which indicates whether the user equipment (UE) uses parameter M or S. It should be noted that when parameter M is used, K2 (or K0) is not required. It should be understood that the examples in Table II use a physical uplink shared channel (PUSCH) time domain resource allocation (TDRA) table (with a time slot gap of K2) and that the arrangement also applies to the physical downlink shared channel (PDSCH).

[0066] Table II: Physical Uplink Shared Channel (PUSCH) Time Domain Resource Allocation (TDRA) Table with Parameter M

[0067] index K2 L S M 0 0 4 3 1 1 0 7 2 2 2 1 4 7 1 3 1 7 2 2

[0068] In another arrangement of embodiments of the present technology, a dynamic indicator is used to indicate whether S is associated with a slot boundary or whether S is associated with a physical downlink control channel (PDCCH) point. This is similar to the previous arrangement, where S = M, but without introducing a new parameter M. In other words, the specified condition is the value of the dynamic indicator received by the communication device from the infrastructure equipment.

[0069] In another arrangement of an embodiment of the present technology, the network can configure, i.e. semi-statically indicate, which entries in a time domain resource allocation (TDRA) table the S parameter is associated with a time slot boundary or a physical downlink control channel (PDCCH) point. In other words, wherein the communication device is configured to receive an indication of an index of a lookup table and to determine the value of a first parameter (e.g. S) from the lookup table based on the indicated index, the specified condition being the value of the indicated index. An example of a time domain resource allocation (TDRA) table with 4 entries implementing this arrangement is shown in Table III, wherein in entries with indices 0 and 3, S is interpreted as being associated with a physical downlink control channel (PDCCH) point, while in entries with indices 1 and 2, S is interpreted as being associated with a time slot boundary. It should be noted that the S reference configuration (physical downlink control channel (PDCCH) point or time slot boundary) is semi-statically (i.e. radio resource control (RRC)) configured. It should be understood that although the examples in Table III use a physical downlink shared channel (PDSCH) time domain resource allocation (TDRA) table, this arrangement is also applicable to the physical uplink shared channel (PUSCH).

[0070] Table III: Physical Downlink Shared Channel (PDSCH) Time Domain Resource Allocation (TDRA) Table with Reference Point Indicator

[0071]

[0072] In another arrangement of embodiments of the present technology, when the S parameter (or the M parameter in some arrangements) is a symbol offset associated with a physical downlink control channel point, if less than or equal to N symbols cross a slot boundary, the corresponding physical downlink shared channel / physical uplink shared channel is truncated at the slot boundary. In other words, the L parameter is reduced by the number of symbols that cross the slot boundary, up to a maximum of N symbols. N can be configured or indicated in the downlink control information for radio resource control. In other words, if the specified condition has been met, the communication device is configured to determine whether one of the physical uplink shared channel and the physical downlink shared channel is completely contained within a single time division slot of the wireless access interface, and if one of the physical uplink shared channel and the physical downlink shared channel is not completely contained within the single time division slot of the wireless access interface, determine whether the number of symbols of the temporally subsequent time division slot containing a portion of one of the physical uplink shared channel and the physical downlink shared channel is less than or equal to a predetermined number of symbols N, and if the number of symbols of the temporally subsequent time division slot containing a portion of one of the physical uplink shared channel and the physical downlink shared channel is less than or equal to N symbols, determine that one of the physical uplink shared channel and the physical downlink shared channel is truncated by 1 to N symbols. Figure 14In the example shown, in which the uplink grant carried by the downlink control information is sent from time t1 to t2, the physical uplink shared channel is scheduled using time domain resource allocation parameters K2=0, S=6 and L=7. Here, S is related to the start of the physical downlink control channel, which results in the physical uplink shared channel transmission between time t3 and t5, causing the physical uplink shared channel to cross the time slot boundary. In this example, N is configured as 2 symbols. Since only one symbol in the physical uplink shared channel crosses the time slot boundary, the physical uplink shared channel is truncated by 1 symbol, resulting in a physical uplink shared channel duration of 6 symbols, that is, the truncation duration L T = 6 symbols. It should be understood that although Figure 14 The examples in use a physical uplink shared channel, but this arrangement is also applicable to a physical downlink shared channel.

[0073] In a further arrangement of the aforementioned arrangement in an embodiment of the present technology, if a physical downlink shared channel / physical uplink shared channel has more than N symbols that cross a time slot boundary, no truncation is performed, and the entire physical downlink shared channel / physical uplink shared channel is transmitted in the next time slot using one of the above arrangements. In other words, if the number of symbols in a temporally subsequent time division slot that includes a portion of one of the physical uplink shared channel and the physical downlink shared channel is greater than N symbols, then the communication device is configured to determine that one of the physical uplink shared channel and the physical downlink shared channel is temporally shifted so as to be completely included in the temporally subsequent time division slot.

[0074] The network may configure the user equipment such that S always follows the tradition (ie always relates to a slot boundary) or S may use some of the above arrangements, ie relate to a physical downlink control channel point depending on other parameters or indicators.

[0075] In some arrangements, the physical downlink control channel point may be the start of a physical downlink control channel transmission. In other words, the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the start of the radio resource group forming the physical downlink control channel. Alternatively, in some arrangements, the physical downlink control channel point may be in the middle of a physical downlink control channel transmission. In other words, the designated point associated with the physical downlink control channel point at which one of the uplink grant and the downlink grant is received is in the middle of the radio resource group forming the physical downlink control channel between the start and the end of the radio resource group forming the physical downlink control channel. Alternatively, in some arrangements, the physical downlink control channel point may be the end of a physical downlink control channel transmission. In other words, the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the end of the radio resource group forming the physical downlink control channel.

[0076] In some arrangements, the physical downlink control channel point may be the beginning of a physical downlink control channel search space group. In other words, the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the beginning of a physical downlink control channel search space group, which includes all possible locations in the radio resources of the radio access interface that can receive the physical downlink control channel. Alternatively, in some arrangements, the physical downlink control channel point may be in the middle of a physical downlink control channel search space group. In other words, the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is in the middle of a physical downlink control channel search space group between the beginning and the end of the search space group, which includes all possible locations in the radio resources of the radio access interface that can receive the physical downlink control channel. Alternatively, in some arrangements, the physical downlink control channel point may be the end of a physical downlink control channel search space group. In other words, the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the end of a search space group for the physical downlink control channel, which search space group includes all possible locations in the radio resources of the wireless access interface at which the physical downlink control channel can be received.

[0077] In some arrangements, the physical downlink control channel (PDC) may be the start of a resource control group (CORESET) containing a PDCCH transmission. In other words, the designated point associated with the PDCCH at which either an uplink grant or a downlink grant is received is the start of the radio resource group (RCG) that forms the RCG containing the PDCCH. Those skilled in the art will appreciate that a RCG is a set of physical resources (i.e., a specific region within the new radio downlink resource grid) and a set of parameters for carrying the PDCCH / downlink control information. In the LTE PDCCH region, the PDCCH is consistently distributed across the entire channel bandwidth, while the new RRCG region is confined to a specific region in the frequency domain. Alternatively, in some arrangements, the PDCCH may be in the middle of a RCG containing a PDCCH transmission. In other words, the designated point associated with the PDCCH at which either an uplink grant or a downlink grant is received is located in the middle of the radio resource group (RCG) that forms the RCG containing the PDCCH, between the start and end of the radio resource group (RCG) that forms the RCG. Alternatively, in some arrangements, the physical downlink control channel point may be the end of a resource control group that includes a physical downlink control channel transmission. In other words, the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the end of the radio resource group that forms the resource control group that includes the physical downlink control channel.

[0078] Flowchart

[0079] Figure 15 A flowchart illustrating a communication process in a communication system according to an embodiment of the present technology is shown. Figure 15 The illustrated process is a method of operating a communication device configured to transmit data to or receive data from infrastructure equipment of a wireless communication network.

[0080] The method begins at step S1501. The method includes, in step S1502, receiving an uplink grant and a downlink grant from an infrastructure device from one of a plurality of groups of radio resources forming a physical downlink control channel in a first time slot of a wireless access interface provided by a wireless communication network; the uplink grant indicating an allocation of radio resources forming a physical uplink shared channel of the wireless access interface; and the downlink grant indicating an allocation of radio resources forming a physical downlink shared channel of the wireless access interface. In step S1503, the method includes determining whether a specified condition has been met. If the specified condition has been met, the process proceeds to step S1504, which includes determining, based on at least a first parameter, an allocation of radio resources forming the physical uplink shared channel from the uplink grant and an allocation of radio resources forming the physical downlink shared channel from the downlink grant, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between a specified point associated with the physical downlink control channel in which one of the uplink grant and the downlink grant was received and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel. However, if the specified condition is not met, the process moves to step S1505, which includes determining one of an allocation of radio resources forming a physical uplink shared channel from the uplink grant and an allocation of radio resources forming a physical downlink shared channel from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating the number of symbols between the start of the first time division slot and the first symbol of one of the physical uplink shared channel and the physical downlink shared channel. The method ends at step S1506.

[0081] Those skilled in the art will understand that the embodiments of the present technology can be adjusted Figure 15 For example, the method may include other intermediate steps, or the steps may be performed in any logical order.

[0082] Although the embodiments of the present technology are mainly Figure 10 The example communication system shown is described and described according to Figures 11 to 14 It will be clear to those skilled in the art that these examples are equally applicable to other systems than those described herein.

[0083] Those skilled in the art will further appreciate that such infrastructure equipment and / or communication devices defined herein may be further defined according to the various arrangements and embodiments discussed in the preceding paragraphs. Those skilled in the art will further appreciate that such infrastructure equipment and communication devices defined and described herein may form part of a communication system other than the communication system defined in the present disclosure.

[0084] The following numbered paragraphs provide further example aspects and features of the present technology:

[0085] Paragraph 1. A communication device configured to send data to or receive data from infrastructure equipment of a wireless communication network, the communication device comprising

[0086] a transceiver circuit configured to transmit and receive signals via a wireless access interface provided by a wireless communication network, and a controller circuit.

[0087] The controller circuit is configured to be combined with the transceiver circuit

[0088] to receive, from an infrastructure device in a first time division slot of the wireless access interface, one of an uplink grant and a downlink grant from a group of a plurality of groups of radio resources forming a physical downlink control channel (PDCCH); the uplink grant indicating an allocation of radio resources forming a physical uplink shared channel of the wireless access interface; the downlink grant indicating an allocation of radio resources forming a physical downlink shared channel of the wireless access interface;

[0089] And determine whether the specified conditions are met.

[0090] If the specified condition has been met, the controller circuitry is configured to, in combination with the transceiver circuitry, determine one of an allocation of radio resources forming a physical uplink shared channel from the uplink grant and an allocation of radio resources forming a physical downlink shared channel from the downlink grant based on at least a first parameter, wherein the communication device is configured to interpret a value of the first parameter as indicative of a number of symbols between a specified point associated with a physical downlink control channel at which one of the uplink grant and the downlink grant is received and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel, or

[0091] If the specified condition is not met, the controller circuit is configured to, in combination with the transceiver circuit, determine one of an allocation of radio resources to form a physical uplink shared channel from the uplink grant and an allocation of radio resources to form a physical downlink shared channel from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between the start of the first time division slot and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel.

[0092] Paragraph 2. The communication apparatus of paragraph 1, wherein the specified condition is a value of a second parameter, wherein the second parameter indicates a time division slot number from a first time division slot of the wireless access interface to a second time division slot of the wireless access interface, and one of the physical downlink shared channel and the physical uplink shared channel is located in the second time division slot.

[0093] Paragraph 3. The communication apparatus of paragraph 1, wherein the specified condition is whether one of the physical uplink shared channel and the physical downlink shared channel is completely contained within a single time division slot of the wireless access interface.

[0094] Paragraph 4. The communication apparatus of paragraph 3, wherein if the specified condition is not satisfied, the value of the first parameter is 0, and the communication apparatus is configured to determine that one of the physical uplink shared channel and the physical downlink shared channel is included in a time division slot that is temporally subsequent to the first time division slot.

[0095] Paragraph 5. The communication apparatus of paragraph 3, wherein if the specified condition is not satisfied, the value of the first parameter is the same as the value of the first parameter when the specified condition is satisfied, and the communication apparatus is configured to determine that one of the physical uplink shared channel and the physical downlink shared channel is included in a time division slot that is temporally subsequent to the first time division slot.

[0096] Paragraph 6. The communication device of paragraph 1, wherein the specified condition is a value of a dynamic indicator received by the communication device from the infrastructure equipment.

[0097] Paragraph 7. The communication device of paragraph 1, wherein

[0098] The communication device is configured to receive an indication of an index into the lookup table,

[0099] determining a value for the first parameter from a lookup table according to the indicated index,

[0100] and determining from a lookup table based on the indicated index whether the value of the first parameter indicates the number of symbols between a specified point associated with a physical downlink control channel and a first symbol of one of a physical uplink shared channel and a physical downlink shared channel, or whether the value of the first parameter indicates the number of symbols between the start of a first time division slot and the first symbol of one of the physical uplink shared channel and the physical downlink shared channel.

[0101] Paragraph 8. The communication device of paragraph 1, wherein the specified condition is a value of the indicated index.

[0102] Paragraph 9. The communication device of paragraph 1, wherein if a specified condition has been met,

[0103] The communication device is configured to determine whether one of a physical uplink shared channel and a physical downlink shared channel is entirely contained within a single time division slot of the wireless access interface,

[0104] and if one of the physical uplink shared channel and the physical downlink shared channel is not entirely contained within a single time division slot of the wireless access interface, determining whether the number of symbols of a temporally subsequent time division slot containing a portion of one of the physical uplink shared channel and the physical downlink shared channel is less than or equal to a predetermined number of symbols N,

[0105] And if the number of symbols of a temporally subsequent time-division slot containing a portion of one of the physical uplink shared channel and the physical downlink shared channel is less than or equal to N symbols, it is determined that one of the physical uplink shared channel and the physical downlink shared channel is truncated by 1 to N symbols.

[0106] Paragraph 10. The communication device of paragraph 9, wherein the communication device is configured to determine that one of the physical uplink shared channel and the physical downlink shared channel is shifted in time to be completely contained within the temporally subsequent time division slot if the number of symbols of the temporally subsequent time division slot containing a portion of one of the physical uplink shared channel and the physical downlink shared channel is greater than N symbols.

[0107] Paragraph 11. The communications apparatus of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is a start of a radio resource group forming the physical downlink control channel.

[0108] Paragraph 12. The communication device of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is located in the middle of the radio resource group forming the physical downlink control channel between a start of the radio resource group forming the physical downlink control channel and an end of the radio resource group forming the physical downlink control channel.

[0109] Paragraph 13. The communications apparatus of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is an end of a radio resource group forming the physical downlink control channel.

[0110] Paragraph 14. The communications apparatus of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the beginning of a search space group for the physical downlink control channel, the search space group comprising all possible locations in the radio resources of the wireless access interface at which the physical downlink control channel may be received.

[0111] Paragraph 15. The communications apparatus of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is in the middle of a search space group for the physical downlink control channel between a start of the search space group and an end of the search space group, the search space group including all possible locations in the radio resources of the wireless access interface at which the physical downlink control channel may be received.

[0112] Paragraph 16. The communications apparatus of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is an end of a search space group for the physical downlink control channel, the search space group comprising all possible locations in radio resources of the wireless access interface at which the physical downlink control channel may be received.

[0113] Paragraph 17. The communications apparatus of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is a start of a radio resource group forming a resource control group including the physical downlink control channel.

[0114] Paragraph 18. The communication apparatus of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is located in the middle of the radio resource group forming the resource control group between a start of the radio resource group forming the resource control group and an end of the radio resource group forming the resource control group, the resource control group including the physical downlink control channel.

[0115] Paragraph 19. The communications apparatus of paragraph 1, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is an end of a radio resource group forming a resource control group including the physical downlink control channel.

[0116] Paragraph 20. A method of operating a communication device, the communication device being configured to transmit data to or receive data from infrastructure equipment of a wireless communication network, the method comprising

[0117] receiving, from an infrastructure device, one of an uplink grant and a downlink grant from one of a plurality of groups of radio resources forming a physical downlink control channel (PDCCH) in a first time division slot of a radio access interface provided by a wireless communication network; the uplink grant indicating an allocation of radio resources forming a physical uplink shared channel of the radio access interface; the downlink grant indicating an allocation of radio resources forming a physical downlink shared channel of the radio access interface;

[0118] and determine whether the specified conditions are met,

[0119] and if the specified condition has been met, determining one of an allocation of radio resources forming a physical uplink shared channel from the uplink grant and an allocation of radio resources forming a physical downlink shared channel from the downlink grant based on at least a first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between a specified point associated with a physical downlink control channel at which one of the uplink grant and the downlink grant is received and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel, or

[0120] and if the specified condition is not met, determining one of an allocation of radio resources to form a physical uplink shared channel from the uplink grant and an allocation of radio resources to form a physical downlink shared channel from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating the number of symbols between the start of the first time division slot and the first symbol of one of the physical uplink shared channel and the physical downlink shared channel.

[0121] Paragraph 21. A circuit for a communication device configured to transmit data to or receive data from infrastructure equipment of a wireless communication network, the communication device comprising

[0122] a transceiver circuit configured to transmit and receive signals via a wireless access interface provided by a wireless communication network, and a controller circuit.

[0123] The controller circuit is configured to be combined with the transceiver circuit

[0124] to receive, from an infrastructure device in a first time division slot of the wireless access interface, one of an uplink grant and a downlink grant from a group of a plurality of groups of radio resources forming a physical downlink control channel (PDCCH); the uplink grant indicating an allocation of radio resources forming a physical uplink shared channel of the wireless access interface; the downlink grant indicating an allocation of radio resources forming a physical downlink shared channel of the wireless access interface;

[0125] and determine whether the specified conditions are met,

[0126] and if the specified condition has been met, the controller circuitry is configured to, in combination with the transceiver circuitry, determine one of an allocation of radio resources forming a physical uplink shared channel from the uplink grant and an allocation of radio resources forming a physical downlink shared channel from the downlink grant based on at least a first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between a specified point associated with a physical downlink control channel at which one of the uplink grant and the downlink grant is received and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel, or

[0127] If the specified condition is not met, the controller circuit is configured to, in combination with the transceiver circuit, determine one of an allocation of radio resources to form a physical uplink shared channel from the uplink grant and an allocation of radio resources to form a physical downlink shared channel from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between the start of the first time division slot and a first symbol of one of the physical uplink shared channel and the physical downlink shared channel.

[0128] Paragraph 22. An infrastructure device of a wireless communication network, configured to transmit data to or receive data from a communication device, the infrastructure device comprising

[0129] a transceiver circuit configured to transmit and receive signals via a wireless access interface provided by a wireless communication network, and a controller circuit.

[0130] The controller circuit is configured to be combined with the transceiver circuit

[0131] sending one of an uplink grant and a downlink grant to a communication device in one of a plurality of groups of radio resources forming a physical downlink control channel (PDCCH) in a first time division slot of the wireless access interface; the uplink grant indicating an allocation of radio resources forming a physical uplink shared channel of the wireless access interface; the downlink grant indicating an allocation of radio resources forming a physical downlink shared channel of the wireless access interface;

[0132] and sending to the communication device an indication of an index of the lookup table associated with the value of the first parameter in the lookup table,

[0133] wherein, if the specified condition has been met, the value of the first parameter indicates the number of symbols between a specified point associated with a physical downlink control channel in which one of an uplink grant and a downlink grant is received and a first symbol of one of a physical uplink shared channel and a physical downlink shared channel, or if the specified condition has not been met, the value of the first parameter indicates the number of symbols between the start of a first time division slot and the first symbol of one of a physical uplink shared channel and a physical downlink shared channel.

[0134] Paragraph 23. The infrastructure equipment of paragraph 22, wherein the specified condition is a value of a second parameter, wherein the second parameter indicates a time division slot number of the wireless access interface from a first time division slot of the wireless access interface to a second time division slot of the wireless access interface, and one of the physical downlink shared channel and the physical uplink shared channel is located in the second time division slot.

[0135] Paragraph 24. The infrastructure equipment of paragraph 22, wherein the specified condition is whether one of the physical uplink shared channel and the physical downlink shared channel is entirely contained within a single time division slot of the wireless access interface.

[0136] Paragraph 25. The infrastructure equipment of paragraph 24, wherein if the specified condition is not satisfied, the value of the first parameter is 0, and one of the uplink grant and the downlink grant indicates that one of the physical uplink shared channel and the physical downlink shared channel is included in a time division slot that is temporally subsequent to the first time division slot.

[0137] Paragraph 26. Infrastructure equipment according to paragraph 24, wherein, if the specified condition is not satisfied, the value of the first parameter is the same as the value of the first parameter if the specified condition is satisfied, and wherein one of the uplink grant and the downlink grant indicates that one of the physical uplink shared channel and the physical downlink shared channel is included in a time division slot that is temporally subsequent to the first time division slot.

[0138] Paragraph 27. Infrastructure equipment according to paragraph 22, wherein the specified condition is the value of a dynamic indicator sent by the infrastructure equipment to the communication device.

[0139] Paragraph 28. Infrastructure equipment according to paragraph 22, wherein the specified condition is the value of the indicated index.

[0140] Paragraph 29. The infrastructure equipment of paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the beginning of a radio resource group forming the physical downlink control channel.

[0141] Paragraph 30. Infrastructure equipment according to paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is located in the middle of the radio resource group forming the physical downlink control channel between a start of the radio resource group forming the physical downlink control channel and an end of the radio resource group forming the physical downlink control channel.

[0142] Paragraph 31. The infrastructure equipment of paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is an end of a set of radio resources forming the physical downlink control channel.

[0143] Paragraph 32. The infrastructure equipment of paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the beginning of a search space group for the physical downlink control channel, the search space group comprising all possible locations in the radio resources of the wireless access interface at which the physical downlink control channel may be received.

[0144] Paragraph 33. The infrastructure equipment of paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is in the middle of a search space group for the physical downlink control channel between a start of the search space group and an end of the search space group, the search space group including all possible locations in the radio resources of the wireless access interface at which the physical downlink control channel may be received.

[0145] Paragraph 34. Infrastructure equipment according to paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is an end of a search space group for the physical downlink control channel, the search space group comprising all possible locations in the radio resources of the wireless access interface at which the physical downlink control channel may be received.

[0146] Paragraph 35. The infrastructure equipment of paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is the beginning of a radio resource group that forms a resource control group including the physical downlink control channel.

[0147] Paragraph 36. Infrastructure equipment according to paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is located in the middle of the radio resource group forming the resource control group between a start of the radio resource group forming the resource control group and an end of the radio resource group forming the resource control group, the resource control group including the physical downlink control channel.

[0148] Paragraph 37. Infrastructure equipment according to paragraph 22, wherein the designated point associated with the physical downlink control channel at which one of the uplink grant and the downlink grant is received is an end of a radio resource group forming a resource control group including the physical downlink control channel.

[0149] Paragraph 38. A method of operating infrastructure equipment of a wireless communication network, configured to transmit data to or receive data from a communication device, the method comprising

[0150] transmitting, to the communication device, one of an uplink grant and a downlink grant in one of a plurality of groups of radio resources forming a physical downlink control channel (PDCCH) in a first time division slot of a radio access interface provided by the wireless communication network; the uplink grant indicating an allocation of radio resources forming a physical uplink shared channel of the radio access interface; the downlink grant indicating an allocation of radio resources forming a physical downlink shared channel of the radio access interface;

[0151] and sending to the communication device an indication of an index of the lookup table associated with the value of the first parameter in the lookup table,

[0152] wherein, if the specified condition has been met, the value of the first parameter indicates the number of symbols between a specified point associated with a physical downlink control channel in which one of an uplink grant and a downlink grant is received and a first symbol of one of a physical uplink shared channel and a physical downlink shared channel, or if the specified condition has not been met, the value of the first parameter indicates the number of symbols between the start of a first time division slot and the first symbol of one of a physical uplink shared channel and a physical downlink shared channel.

[0153] Paragraph 39. A circuit for infrastructure equipment of a wireless communication network, configured to transmit data to or receive data from a communication device, the infrastructure equipment comprising

[0154] a transceiver circuit configured to transmit and receive signals via a wireless access interface provided by a wireless communication network, and a controller circuit.

[0155] The controller circuit is configured to be combined with the transceiver circuit

[0156] sending one of an uplink grant and a downlink grant to a communication device in one of a plurality of groups of radio resources forming a physical downlink control channel (PDCCH) in a first time division slot of the wireless access interface; the uplink grant indicating an allocation of radio resources forming a physical uplink shared channel of the wireless access interface; the downlink grant indicating an allocation of radio resources forming a physical downlink shared channel of the wireless access interface; and

[0157] An indication of an index into a lookup table associated with a value of a first parameter in the lookup table is sent to the communication device, wherein the value of the first parameter indicates a number of symbols between a specified point associated with a physical downlink control channel in which one of an uplink grant and a downlink grant is received and a first symbol of one of a physical uplink shared channel and a physical downlink shared channel if a specified condition has been met, or the value of the first parameter indicates a number of symbols between a start of a first time division slot and a first symbol of one of a physical uplink shared channel and a physical downlink shared channel if the specified condition has not been met.

[0158] To the extent that embodiments of the present disclosure have been described as being implemented at least in part by a data processing apparatus controlled by software, it should be understood that non-transitory machine-readable media, such as optical disks, magnetic disks, semiconductor memories, etc., carrying such software are also considered to represent embodiments of the present disclosure.

[0159] It will be appreciated that for clarity, the above description has described embodiments with reference to different functional units, circuits and / or processors. However, it will be apparent that any suitable distribution of functionality between different functional units, circuits and / or processors may be used without departing from the embodiments.

[0160] The described embodiments may be implemented in any suitable form, including hardware, software, firmware, or any combination thereof. The described embodiments may optionally be implemented at least in part as computer software running on one or more data processors and / or digital signal processors. The elements and components of any embodiment may be implemented physically, functionally, and logically in any suitable manner. In practice, the functionality may be implemented in a single unit, in multiple units, or as part of other functional units. Therefore, the disclosed embodiments may be implemented in a single unit or may be physically and functionally distributed between different units, circuits, and / or processors.

[0161] Although the present disclosure has been described in conjunction with some embodiments, it is not intended to be limited to the specific form set forth herein. In addition, although a feature may appear to be described in conjunction with a particular embodiment, those skilled in the art will recognize that the various features of the described embodiments may be combined in any manner suitable for implementing the technology.

[0162] References

[0163] [1] RP-182090, “Revised SID: New Radio Industrial Internet of Things (IoT) Study,” 3rd Generation Partnership Project (3GPP) Radio Access Network (RAN) #81.

[0164] [2] Holma H and Toskala A, “Long Term Evolution (LTE) for Universal Mobile Telecommunications System (UMTS) Orthogonal Frequency Division Multiple Access (OFDMA) and Single Carrier Frequency Division Multiple Access (SC-FDMA) based radio access”, John Wiley and Sons, 2009.

[0165] [3] 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 38.321, “Media Access Control (MAC) Protocol Specification (Rel-15)”, v15.3.0.

[0166] [4] RP190726, “Physical Layer Enhancements for New Radio Ultra-Reliable Low-Latency Communications (URLLC),” Huawei, HiSilicon, Wireless Access Networks #83.

[0167] [5] R1-1906057, “Physical Downlink Control Channel (PDCCH) Enhancement for Ultra-Reliable Low-Latency Communications”, Huawei, HiSilicon, Radio Access Network 1#97.

[0168] [6] R1-1906751, “On the physical downlink control channel enhancement for ultra-reliable low-latency communications on new radio”, Nokia, Nokia Shanghai Bell, Radio Access Network 1#97.

Claims

1. A communication device configured to send data to or receive data from infrastructure equipment of a wireless communication network, the communication device comprising transceiver circuitry configured to transmit and receive signals via a wireless access interface provided by a wireless communication network, and a controller circuit configured to combine with the transceiver circuit to receiving, from the infrastructure equipment, one of an uplink grant indicating allocation of radio resources forming a physical uplink shared channel (PUSCH) of the radio access interface and a downlink grant indicating allocation of radio resources forming a physical downlink shared channel (PDSCH) of the radio access interface in a first time division slot of the radio access interface, to determine whether a specified condition is met, and If the specified condition has been met, the controller circuit is configured to, in combination with the transceiver circuit, determine one of an allocation of radio resources forming the PUSCH from the uplink grant and an allocation of radio resources forming the PDSCH from the downlink grant based on at least a first parameter, wherein the communication apparatus being configured to interpret the value of the first parameter as indicating a number of symbols between a designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received and a first symbol of one of the PUSCH and the PDSCH, or If the specified condition is not met, the controller circuit is configured to, in combination with the transceiver circuit, determine one of an allocation of radio resources forming the PUSCH from the uplink grant and an allocation of radio resources forming the PDSCH from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between the start of the first time division slot and a first symbol of one of the PUSCH and the PDSCH.

2. The communication device according to claim 1, wherein The specified condition is to determine whether the value of a second parameter is met, wherein the second parameter indicates the number of time division slots of the wireless access interface from the first time division slot to the second time division slot of the wireless access interface, and one of the PUSCH and the PDSCH is located in the second time division slot.

3. The communication device according to claim 1, wherein The specified condition is whether one of the PUSCH and the PDSCH is completely contained in a single time division slot of the wireless access interface. The communication device according to claim 3 , wherein: If the specified condition is not satisfied, the value of the first parameter is 0, and the communication apparatus is configured to determine that one of the PUSCH and the PDSCH is included in a time division slot that is temporally subsequent to the first time division slot. The communication device according to claim 3 , wherein: If the specified condition is not satisfied, the value of the first parameter is the same as the value of the first parameter when the specified condition is satisfied, and the communication device is configured to determine that one of the PUSCH and the PDSCH is included in a time division slot that is temporally subsequent to the first time division slot. The communication device according to claim 1 , wherein: The specified condition is to determine whether a value of a dynamic indicator received by the communication device from the infrastructure equipment is satisfied.

7. The communication device according to claim 1, wherein The communication device is configured to receiving an indication of an index into a lookup table, determining a value for the first parameter from the lookup table according to the indicated index, and Determine from the lookup table according to the indicated index whether the value of the first parameter indicates the number of symbols between the designated point associated with the PDCCH and the first symbol of one of the PUSCH and the PDSCH, or whether the value of the first parameter indicates the number of symbols between the start of the first time division slot and the first symbol of one of the PUSCH and the PDSCH.

8. The communication device according to claim 1, wherein The specified condition is to determine whether the value of the indicated index is satisfied.

9. The communication device according to claim 1, wherein If the specified condition has been met, the communication device is configured to determining whether one of the PUSCH and the PDSCH is completely contained within a single time division slot of the radio access interface, and If one of the PUSCH and the PDSCH is not completely contained within a single time division slot of the wireless access interface, determining whether the number of symbols of a temporally subsequent time division slot containing a portion of one of the PUSCH and the PDSCH is less than or equal to a predetermined number of symbols N, and If the number of symbols of a temporally subsequent time-division slot including a portion of one of the PUSCH and the PDSCH is less than or equal to N symbols, it is determined that one of the PUSCH and the PDSCH is truncated by 1 to N symbols.

10. The communication device according to claim 9, wherein: The communication apparatus is configured to, if the number of symbols of a temporally subsequent time division slot including a portion of one of the PUSCH and the PDSCH is greater than N symbols, determine that one of the PUSCH and the PDSCH is temporally shifted to be completely included in the temporally subsequent time division slot. The communication device according to claim 1 , wherein: The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is the start of a radio resource group forming the PDCCH.

12. The communication device according to claim 1, wherein The designated point associated with the PDCCH in which one of the uplink grant and the downlink grant is received is located in the middle of the radio resource group forming the PDCCH between the start of the radio resource group forming the PDCCH and the end of the radio resource group forming the PDCCH.

13. The communication device according to claim 1, wherein The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is an end of the radio resource group forming the PDCCH.

14. The communication device according to claim 1, wherein The designated point associated with the PDCCH where one of the uplink grant and the downlink grant is received is the start of a search space group for the PDCCH, the search space group comprising all possible locations in radio resources of the wireless access interface capable of receiving the PDCCH.

15. The communication device according to claim 1, wherein The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is in the middle of a search space group of the PDCCH between a start of a search space group and an end of a search space group, the search space group including all possible locations in the radio resources of the wireless access interface capable of receiving the PDCCH.

16. The communication device according to claim 1, wherein The designated point associated with the PDCCH where one of the uplink grant and the downlink grant is received is an end of a search space group for the PDCCH, the search space group including all possible locations in radio resources of the wireless access interface capable of receiving the PDCCH.

17. The communication device according to claim 1, wherein The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is a start of a radio resource group forming a resource control group CORESET including the PDCCH.

18. The communication device according to claim 1, wherein The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is located in the middle of a radio resource group forming a resource control group CORESET between a start of a radio resource group forming a CORESET and an end of a radio resource group forming a CORESET, the resource control group including the PDCCH.

19. The communication device according to claim 1, wherein The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is an end of a radio resource group forming a resource control group CORESET including the PDCCH.

20. A method of operating a communication device, the communication device being configured to transmit data to or receive data from infrastructure equipment of a wireless communication network, the method comprising receiving, from the infrastructure equipment, one of an uplink grant and a downlink grant from a group of radio resources forming a physical downlink control channel (PDCCH) of a plurality of groups of radio resources in a first time division slot of a radio access interface provided by the wireless communication network, the uplink grant indicating allocation of radio resources forming a physical uplink shared channel (PUSCH) of the wireless access interface, the downlink grant indicating allocation of radio resources forming a physical downlink shared channel (PDSCH) of the wireless access interface to determine whether a specified condition is met, and If the specified condition has been met, determining one of an allocation of radio resources forming the PUSCH from the uplink grant and an allocation of radio resources forming the PDSCH from the downlink grant based on at least a first parameter, wherein the communication apparatus being configured to interpret the value of the first parameter as indicating a number of symbols between a designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received and a first symbol of one of the PUSCH and the PDSCH, or If the specified condition is not met, determining one of an allocation of radio resources to form the PUSCH from the uplink grant and an allocation of radio resources to form the PDSCH from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating the number of symbols between the start of the first time division slot and the first symbol of one of the PUSCH and the PDSCH.

21. A circuit for a communication device, the communication device being configured to send data to or receive data from infrastructure equipment of a wireless communication network, the circuit comprising transceiver circuitry configured to transmit and receive signals via a wireless access interface provided by the wireless communication network, and a controller circuit configured to combine with the transceiver circuit to receiving, from the infrastructure equipment, one of an uplink grant indicating allocation of radio resources forming a physical uplink shared channel (PUSCH) of the radio access interface and a downlink grant indicating allocation of radio resources forming a physical downlink shared channel (PDSCH) of the radio access interface in a first time division slot of the radio access interface, to determine whether a specified condition is met, and If the specified condition has been met, the controller circuit is configured to, in combination with the transceiver circuit, determine one of an allocation of radio resources forming the PUSCH from the uplink grant and an allocation of radio resources forming the PDSCH from the downlink grant based on at least a first parameter, wherein the communication apparatus being configured to interpret the value of the first parameter as indicating a number of symbols between a designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received and a first symbol of one of the PUSCH and the PDSCH, or If the specified condition is not met, the controller circuit is configured to, in combination with the transceiver circuit, determine one of an allocation of radio resources forming the PUSCH from the uplink grant and an allocation of radio resources forming the PDSCH from the downlink grant based on at least the first parameter, wherein the communication device is configured to interpret the value of the first parameter as indicating a number of symbols between the start of the first time division slot and a first symbol of one of the PUSCH and the PDSCH.

22. An infrastructure device of a wireless communication network, configured to send data to or receive data from a communication device, the infrastructure device comprising transceiver circuitry configured to transmit and receive signals via a wireless access interface provided by the wireless communication network, and a controller circuit configured to combine with the transceiver circuit to sending, to the communication device, one of an uplink grant indicating allocation of radio resources forming a physical uplink shared channel (PUSCH) of the radio access interface and a downlink grant indicating allocation of radio resources forming a physical downlink shared channel (PDSCH) of the radio access interface, from a group of radio resources of the plurality of groups of radio resources forming a physical downlink control channel (PDCCH) in a first time division slot of the radio access interface; and sending an indication to the communication device of an index into the lookup table associated with the value of the first parameter in the lookup table, in, If the specified condition has been met, the value of the first parameter indicates the number of symbols between a specified point associated with the PDCCH in which one of the uplink grant and the downlink grant is received and a first symbol of one of the PUSCH and the PDSCH, or if the specified condition has not been met, the value of the first parameter indicates the number of symbols between the start of the first time division slot and the first symbol of one of the PUSCH and the PDSCH.

23. The infrastructure equipment of claim 22, wherein: The specified condition is to determine whether the value of a second parameter is met, wherein the second parameter indicates the number of time division slots of the wireless access interface from the first time division slot of the wireless access interface to the second time division slot of the wireless access interface, and one of the PDSCH and the PUSCH is located in the second time division slot.

24. The infrastructure equipment of claim 22, wherein: The specified condition is whether one of the PUSCH and the PDSCH is completely contained in a single time division slot of the radio access interface.

25. The infrastructure equipment of claim 24, wherein: If the specified condition is not met, the value of the first parameter is 0, and one of the uplink grant and the downlink grant indicates that one of the PUSCH and the PDSCH is included in a time division slot that is temporally subsequent to the first time division slot.

26. The infrastructure equipment of claim 24, wherein: If the specified condition is not met, the value of the first parameter is the same as the value of the first parameter when the specified condition is met, and one of the uplink grant and the downlink grant indicates that one of the PUSCH and the PDSCH is included in a time division slot that is temporally subsequent to the first time division slot.

27. The infrastructure equipment of claim 22, wherein: The specified condition is to determine whether a value of a dynamic indicator sent by the infrastructure equipment to the communication device is satisfied.

28. The infrastructure equipment of claim 22, wherein: The specified condition is to determine whether the value of the indicated index is satisfied.

29. The infrastructure equipment of claim 22, wherein: The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is the start of a radio resource group forming the PDCCH.

30. The infrastructure equipment of claim 22, wherein: The designated point associated with the PDCCH in which one of the uplink grant and the downlink grant is received is located in the middle of the radio resource group forming the PDCCH between the start of the radio resource group forming the PDCCH and the end of the radio resource group forming the PDCCH.

31. The infrastructure equipment of claim 22, wherein: The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is an end of the radio resource group forming the PDCCH.

32. The infrastructure equipment of claim 22, wherein: The designated point associated with the PDCCH where one of the uplink grant and the downlink grant is received is the start of a search space group for the PDCCH, the search space group comprising all possible locations in radio resources of the wireless access interface capable of receiving the PDCCH.

33. The infrastructure equipment of claim 22, wherein: The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is in the middle of a search space group of the PDCCH between a start of a search space group and an end of a search space group, the search space group including all possible locations in the radio resources of the wireless access interface capable of receiving the PDCCH.

34. The infrastructure equipment of claim 22, wherein: The designated point associated with the PDCCH where one of the uplink grant and the downlink grant is received is an end of a search space group for the PDCCH, the search space group including all possible locations in radio resources of the wireless access interface capable of receiving the PDCCH.

35. The infrastructure equipment of claim 22, wherein: The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is the start of a radio resource set forming a resource control set, CORESET, including the PDCCH.

36. The infrastructure equipment of claim 22, wherein the designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is located in the middle of a group of radio resources forming a resource control group, CORESET, between a start of a group of radio resources forming a CORESET and an end of a group of radio resources forming a CORESET, the resource control group including the PDCCH.

37. The infrastructure equipment of claim 22, wherein: The designated point associated with the PDCCH at which one of the uplink grant and the downlink grant is received is an end of a radio resource set forming a resource control set, CORESET, including the PDCCH.

38. A method of operating infrastructure equipment of a wireless communication network, configured to transmit data to or receive data from a communication device, the method comprising transmitting, to the communication device, one of an uplink grant and a downlink grant from a group of radio resources forming a physical downlink control channel (PDCCH) in a first time-division time slot of a radio access interface provided by the wireless communication network, the uplink grant indicating allocation of radio resources forming a physical uplink shared channel (PUSCH) of the radio access interface and the downlink grant indicating allocation of radio resources forming a physical downlink shared channel (PDSCH) of the radio access interface; and sending an indication of an index of a lookup table associated with a value of a first parameter in the lookup table to the communication device, in, If the specified condition has been met, the value of the first parameter indicates the number of symbols between a specified point associated with the PDCCH in which one of the uplink grant and the downlink grant is received and a first symbol of one of the PUSCH and the PDSCH, or if the specified condition has not been met, the value of the first parameter indicates the number of symbols between the start of the first time division slot and the first symbol of one of the PUSCH and the PDSCH.

39. A circuit for infrastructure equipment of a wireless communication network, configured to send data to or receive data from a communication device, the circuit comprising transceiver circuitry configured to transmit and receive signals via a wireless access interface provided by the wireless communication network, and a controller circuit configured to combine with the transceiver circuit to sending, to the communication device, one of an uplink grant indicating allocation of radio resources forming a physical uplink shared channel (PUSCH) of the radio access interface and a downlink grant indicating allocation of radio resources forming a physical downlink shared channel (PDSCH) of the radio access interface, from a group of radio resources of the plurality of groups of radio resources forming a physical downlink control channel (PDCCH) in a first time division slot of the radio access interface; and sending an indication of an index of a lookup table associated with a value of a first parameter in the lookup table to the communication device, in, If the specified condition has been met, the value of the first parameter indicates the number of symbols between a specified point associated with the PDCCH in which one of the uplink grant and the downlink grant is received and a first symbol of one of the PUSCH and the PDSCH, or if the specified condition has not been met, the value of the first parameter indicates the number of symbols between the start of the first time division slot and the first symbol of one of the PUSCH and the PDSCH.

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