The present disclosure relates to terminal devices configured to receive data from infrastructure equipment of a wireless communications network in the presence of other transmissions. The present disclosure also relates to Infrastructure equipment for forming part of a wireless communications network and methods of receiving data at a communications terminal and for transmitting data to a terminal device.

BACKGROUND

The "background" description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description which may not otherwise qualify as prior art at the time of filing, are neither expressly or impliedly admitted as prior art against the present invention.

Third and fourth generation mobile telecommunication systems, such as those based on the 3GPP defined UMTS and Long Term Evolution (LTE) architecture are able to support more sophisticated services than simple voice and messaging services offered by previous generations of mobile telecommunication systems. For example, with the improved radio interface and enhanced data rates provided by LTE systems, a user is able to enjoy high data rate applications such as mobile video streaming and mobile video conferencing that would previously only have been available via a fixed line data connection. The demand to deploy third and fourth generation networks is therefore strong and the coverage area of these networks, i.e. geographic locations where access to the networks is possible, is expected to increase rapidly. However, whilst fourth generation networks can support communications at high data rate and low latencies from devices such as smart phones and tablet computers, it is expected that future wireless communications networks will be expected to efficiently support communications with a much wider range of devices associated with a wider range of data traffic profiles, for example including reduced complexity devices, machine type communication devices, high resolution video displays and virtual reality headsets. Some of these different types of devices may be deployed in very large numbers, for example low complexity devices for supporting the "Internet of Things", and may typically be associated with the transmissions of relatively small amounts of data with relatively high latency tolerance, whereas other types of device, for example supporting high-definition video streaming, may be associated with transmissions of relatively large amounts of data with relatively low latency tolerance.

There is therefore expected to be a desire for future wireless communications networks, which may be referred to as 5G or new radio (NR) system / new radio access technology (RAT), networks, to efficiently support connectivity for a wide range of devices associated with different applications with different characteristic data traffic profiles, resulting in different devices having different operating characteristics / requirements, such as:

High latency tolerance

· High data rates

Millimetre wave spectrum use

High density of network nodes (e.g. small cell and relay nodes)

Large system capacity

Large numbers of devices (e.g. MTC devices / Internet of Things devices)

Low device cost and energy consumption

Flexible spectrum usage

Flexible mobility

Ultra-reliable and Low latency (e.g. for vehicle safety applications, such as self-driving cars).

A 3GPP Study Item (SI) on New Radio Access Technology (NR) [1 ] has been completed and a Work Item (Wl) has been agreed to specify functionalities for NR [2] which would be the new Radio Access Technology (RAT) for such a next generation wireless communication system. The new RAT is expected to operate in a large range of frequencies and it is expected to cover a broad range of use cases. Example use cases that are considered under this SI are:

Enhanced Mobile Broadband (eMBB)

Massive Machine Type Communications (mMTC)

Ultra Reliable & Low Latency Communications (URLLC)

eMBB services are typically high capacity services with a requirement to support up to 20Gb/s. For efficient transmission of large amounts of data at high throughput, eMBB services are expected to use a long scheduling time so as to minimise the overhead, where scheduling time refers to the time available for data transmission between allocations. In other words, eMBB services are expected to have relatively infrequent allocation messages and to have longer time period allocated to data transmission in-between allocation messages.

On the other hand URLLC services are low latency services, wherein the latency is measured from the ingress of a layer 2 packet to its egress from the network, with a proposed target of 1 ms. URLLC data is generally expected to be short such that smaller scheduling times are generally expected compared to eMBB transmissions. As the skilled person will understand, eMBB transmissions and URLLC transmissions have different requirements and expectations, wherein high capacity and low overhead is desired for one while low latency is desired for the other.

It is therefore challenging to conceive a system which can accommodate both needs and where these two very different types of transmissions can be transmitted in a satisfactory manner.

SUMMARY

The present disclosure can help address or mitigate at least some of the issues discussed above.

According to the present technique there is provided a method of receiving data by a device, comprising determining an allocation of downlink resources of a wireless radio interface for the reception of data by the device,

A method of receiving data by a terminal device, comprising determining an allocation of downlink resources of a wireless radio interface for the reception of data by the terminal device and receiving signals representing the data within the allocated downlink resources. The receiving includes determining that the allocated downlink resources include at least a portion of a first predetermined resource set, receiving via the wireless radio interface, signals within first predetermined common pre-emption indicator transmission resources allocated for the transmission of a first pre-emption indicator associated with the first predetermined resource set, and determining, based on the signals received within the first predetermined common pre- emption indicator transmission resources, whether a portion of the signals received within the allocated downlink resources and within the first predetermined resource set comprises data signals transmitted to a different terminal device.

According to the present disclosure, example embodiments of the present technique can provide arrangements and systems where high capacity and low latency transmissions can be communicated at the same time while improving resources utilisation for for each type of transmission. For example, where eMBB data whose transmission resources (or portion thereof) are used for transmitting a URRLC service, unexpected errors in decoding the eMBB data can be reduced by providing an indication of the transmission resources in which the URRLC service was transmitted, can therefore improve a likelihood of correctly receiving the eMBB data.

Respective aspects and features of the present disclosure are defined in the appended claims.

It is to be understood that both the foregoing general description and the following detailed description are exemplary, but are not restrictive, of the present technology. The described embodiments, together with further advantages, will be best understood by reference to the following detailed description taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete appreciation of the disclosure and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein like reference numerals designate identical or corresponding parts throughout the several views, and wherein:

Figure 1 schematically represents some elements of a conventional LTE-based mobile telecommunications network / system;

Figure 2 illustrates resource allocations in the time and frequency domains

Figures 3 to 8 illustrate various arrangements for resource allocations for data transmissions, resource sets and corresponding common pre-emption indicators in accordance with certain embodiments of the disclosure.

Figure 9 is a flow diagram schematically representing a method of operating a terminal device in accordance with certain embodiments of the disclosure.

Figures 10 and 1 1 are flow diagrams schematically represent methods of operating network infrastructure equipment in accordance with certain embodiments of the disclosure.

Figure 12 is a schematic illustration of an example of ghost pre-emption indication in which a pre-emption indicated in a control channel which is common to more than one terminal device can be ambiguous and in correctly interpreted by one of the terminal devices; and

Figure 13 is a schematic illustration of an example embodiment of the present technique in which an pre-emption indication is limited to signals transmitted to a different terminal device flow diagram representing an example embodiment .

DESCRIPTION OF EXAMPLES

Figure 1 shows a wireless mobile communications architecture which may be adapted to provide functionality in accordance with embodiments of the disclosure described herein. The network shown in Figure 1 comprises a core network 100 connected to a base station 102. The base station 102 comprises a controller 104, a receiver 106 and a transmitter 108. The

transmitter and the receiver are connected to radiating elements forming an antenna 1 10. The base station 102 thus generates a coverage area or a cell 1 12 and provides connectivity to first, second and third terminal devices 200, 202 and 204 by means of a wireless radio interface.

Each of the terminal devices 200, 202, 204 comprises a transmitter 202, a receiver 204 and a controller 206 which together operate to transmit and receive data to and from the base station 102 and hence to communicate data via the core network 100.

The first device 200 comprises a transmitter unit 202 (which when embodied as circuitry may be referred to as "transmitter circuitry") for transmission of wireless signals, a receiver unit 204 (which when embodied as circuitry may be referred to as "receiver circuitry") for reception of wireless signals and a processor unit 206 configured to control the device 200. The processor unit 206 (which when embodied as circuitry may be referred to as "control circuitry") may comprise various sub-units for providing functionality in accordance with embodiments of the present disclosure as explained further herein. These sub-units may be implemented as discrete hardware elements or as appropriately configured functions of the processor unit. Thus the processor unit 206 may comprise a processor unit which is suitably configured / programmed to provide the desired functionality described herein using conventional programming / configuration techniques for equipment in wireless telecommunications systems. The transmitter unit 202, the receiver unit 204 and the processor unit 206 are schematically shown in Figure 1 as separate elements for ease of representation. However, it will be appreciated that the functionality of these units can be provided in various different ways, for example using a single suitably programmed general purpose computer, or suitably configured application-specific integrated circuit(s) / circuitry. It will be appreciated the terminal device 200 will in general comprise various other elements associated with its operating functionality, for example a power source, user interface, and so forth, but these are not shown in Figure 1 in the interests of simplicity.

In Figure 1 , the transmitter, receiver and antenna of the base station 102 are shown as collocated with the controller 104; in some architectures the transmitter, the receiver and the antenna may be separated from the controller and/or each other to form a distributed architecture.

In the architecture shown in Figure 1 , the base station 102 is shown as controlling a single antenna 1 10, however in some architectures a single base station such as the base station 102 may act as a controller for multiple transmitters and multiple receivers and hence multiple antennas, some or all of which may be located remotely from the base station 102. As such the base station 102 may generate the cell 1 12 by means of multiple antennas. For example, in accordance with a network architecture for a new radio access technology (RAT), which may be adapted to provide functionality in accordance with embodiments of the disclosure described herein, a communication cell may comprise a controlling node in communication with a plurality of distributed units (radio access nodes / remote transmission and reception points (TRPs)).

Data is transmitted from the base station 102 to the terminal devices 200, 202, and 204 within the coverage area 1 12 via a radio downlink. Data is transmitted from the devices to the base station via a radio uplink. The core network 100 routes data to and from the devices via the base station and provides functions such as authentication, mobility management, charging and so on. Devices may also be referred to as terminal devices, mobile stations, user equipment (UE), user terminal, mobile radio, communications device, mobile terminals, mobile devices and so forth. Base stations, which are an example of network infrastructure equipment, may also be referred to as transceiver stations / nodeBs / e-nodeBs, infrastructure equipment, gNBs and so forth.

It will be appreciated that operational aspects of the telecommunications network represented in Figure 1 , and of other networks discussed herein in accordance with embodiments of the disclosure, which are not specifically described (for example in relation to specific communication protocols and physical channels for communicating between different elements) may be implemented in accordance with any known techniques, for example according to currently used approaches for implementing such operational aspects of wireless telecommunications systems, e.g. in accordance with the relevant standards.

The specific wireless telecommunications architecture for a wireless telecommunications system adapted to implement functionality in accordance with the principles described herein is not significant to the principles underlying the described approaches.

In the mobile communications network illustrated in Figure 1 , transmissions may be separated in time and frequency. That is, a transmission may use a set of resources defined in terms of a time period and a frequency range, and different transmissions may use other, non-overlapping resources and may accordingly be received and decoded individually. As such, in the examples described herein, the term 'resources' is used to refer to (jointly) time and frequency resources. However, the principles described herein may apply to other transmission schemes where a 'resource' may refer to any portion of a range of parameters that may apply to a transmission, such that the use of the same resource for the transmission of two different pieces of information (for example, an eMBB transmission and a ULLRC transmission) is either not feasible or likely to result in severe decrease in the likelihood of successful reception of one or both. Other examples of resources may therefore include orthogonal spreading codes, orthogonal spatial transmission links, and the like. A resource may be defined in terms of a combination of multiple such parameters (as in the examples described herein, wherein a resource is characterized by time and frequency), or may refer to a single dimension (e.g. by reference solely to time).

As discussed above, a mobile communications network such as the network illustrated in Figure 1 may be used to carry transmissions for services with a variety of constraints, such as high data rate traffic which has some tolerance to delay and traffic which has a low tolerance to delay, which may also have a lower data rate. While the principles of the disclosure will be illustrated in the context of a mobile network where a network element (e.g. TRP, eNB, BTS,...) transmits eMBB and URLLC data to a terminal device, it will be appreciated that the same principles apply to 3G networks, LTE networks or any other suitable network and to any appropriate type or types of data. Likewise, the same principles and teachings can also be used for uplink transmissions from a terminal device to a network receiver (e.g. BTS, eNB, TRP, etc.) or for transmissions between peer devices.

Although the description herein relates to eMBB and URLLC traffic, the disclosure is not so limited. For example, the disclosure is pertinent where the transmission period of the data transmitted to a different device (the URLLC in embodiments) is shorter than the transmission period of the data for which the resources are initially allocated (the eMBB in embodiments) and the data transmitted to the different device uses some or all of the resources initially allocated.

A principle of eMBB data is that in order to reduce the overhead associated with control information, the data transmission occurs over a relatively long time period (e.g. 0.5ms, 1 ms, 5ms, 10ms or 50ms), and as such the control channel associated with an eMBB transmission uses significantly smaller transmission resources than that of the data channel. In this manner, the relative overhead caused by the transmission of control information is reduced.

On the other hand, in order to meet a low latency requirement associated with a URLLC transmission, the URLLC data resources may be relatively shorter, such as 0.25ms. An example requirement currently considered for URLLC is a low latency transmission measured from the ingress of a layer 2 packet to its egress from the network, with a proposed target of 1 ms.

Since URLLC is intolerant to latency, it is agreed that URLLC can occupy (that is, be transmitted using) a subset of the resources that have been previously allocated for an eMBB transmission.

Although a URLLC transmission may comprise a relatively smaller amount of data than an eMBB transmission, it may be necessary that, for example in order to meet a latency requirement, a URLLC transmission occupies a very high bandwidth for a short time period. The bandwidth (i.e. the extent of the transmission resources when measured in the frequency domain) used for a URLLC transmission may therefore exceed that of an eMBB transmission. In particular, the bandwidth used for a single URLLC transmission may span the frequency range used by two or more ongoing eMBB transmissions. As such, a particularly problem arises when a single URLLC transmission uses resources allocated for two or more different eMBB transmissions. This is illustrated in Figure 2.

Figure 2 illustrates data transmissions from the base station 102 to the terminal devices 200, 202 and 204. On the horizontal axis is shown a progression of time while the vertical axis shows a frequency range. The data transmissions having a relatively longer time duration 220, 222 and 224 are examples of first, second and third eMBB transmissions while the transmission using a relatively larger frequency range over a shorter time period 230 is an example of a URLLC transmission. In the example shown in Figure 2, the URLLC transmission 230 uses resources which have been allocated for the first and second eMBB transmissions 220 and 222. The URLLC transmission 230 does not however use any of the resources which are allocated for the third eMBB transmission 224.

Figure 2 also illustrates a principle that an eMBB transmission typically occurs over a long duration but over a relatively limited frequency range while a URLLC transmission may occupy a much shorter time period but may use a much wider range of frequencies in order to meet the latency requirement of the URLLC data.

It has been agreed that the transmission of a URLLC transmission may use resources previously allocated to eMBB data (i.e. for the transmission of the eMBB data) such as the resources allocated for the first and second eMBB transmissions 220 and 222, in order to ensure that the URLLC transmission 230 is able to meet its latency requirements. This is referred to as 'pre-emption'. However, it will be clear to the skilled person that the possibility of correctly decoding the affected eMBB transmissions 220 and 222 will be negatively impacted by the fact that some portion of the resources which were allocated for their transmission has in fact been used for the transmission of the URLLC data 230.

In order to assist receivers of the eMBB data transmissions 220 and 222, it has been agreed that a pre-emption indicator may be transmitted whenever such an occurrence arises in order to assist the receivers of the eMBB data in decoding the transmissions that they receive.

A pre-emption indicator associated with an individual eMBB transmission and transmitted using resources defined based on the transmission resources for the associated eMBB transmission is described in co-pending European patent application EP16189083.5 filed on 15 September 2016 whose content is incorporated herein by reference.

Figure 3 illustrates an example of a pre-emption indicator transmitted in accordance with the present disclosure. In Figure 3, a portion of the resources allocated for an eMBB transmission

302 (for example to the first device 200) have been used instead for the transmission of a URLLC transmission 304 (for example to the second device 202).

In accordance with the present disclosure a set of resources which may be referred to as a resource set is defined, bounded in time and in frequency. Each resource set has associated with it common pre-emption indicator transmission resources which are defined for the transmission of a common pre-emption indicator such as the common pre-emption indicator 306.

In Figure 3 the resource set 308 is bounded in the time domain by times t1 and t2 and in the frequency domain by frequencies f1 and f2. Common pre-emption indicator transmission resources 306 are allocated for the transmission of a common pre-emption indicator associated with the resource set 308; that is to say, whenever pre-emption occurs within the boundaries of the resource set 308, this will be indicated by the transmission of a pre-emption indicator using the common pre-emption indicator transmission resources 306.

In some embodiments a pre-emption indicator will always be transmitted using the pre-determined common pre-emption indicator transmission resources 306 and will indicate whether or not any pre-emption has occurred within the associated resource set 308. In further embodiments the absence of a transmission of a pre-emption indicator using the predetermined common pre-emption indicator transmission resources 306 indicates that no preemption has occurred within the resource set 308. In some example embodiments a pre-emption indicator may be transmitted if any URLLC is transmitted using resources within this resource set regardless of whether the URLLC pre-empts any eMBB transmission within the resource set.

The common pre-emption indicator may be transmitted on a physical downlink control channel (PDCCH) and may be transmitted using a common downlink control indicator (DCI). The device may blind decode the common pre-emption indicator.

Figure 3 shows a single instance of pre-emption occurring within a resource set. However, multiple such pre-emptions may occur within the resource set: either because multiple URLLC transmissions use resources allocated for one or more eMBB transmissions, because a single URLLC transmission uses resources allocated for different eMBB transmissions, or a combination of the two. Regardless, a common pre-emption indicator associated with a resource set provides an indication of all of the pre-emptions which occur within the boundaries of the resource set, which may be received and decoded by the respective recipients of the preempted eMBB data transmission or transmissions.

In general, a device which receives signals transmitted within the common pre-emption indicator transmission resources 306 is able to determine whether or not pre-emption has occurred within the corresponding resource set 308.

In the event of pre-emption occurring within the resource set 308, the common pre-emption indicator transmitted in the common pre-emption indicator transmission resources 306 may indicate one or more of the following:

a) whether or not pre-emption of one or more eMBB transmissions by one or more URLLC transmissions has occurred within the resource set;

b) a subset of the resources within the resource set that includes the set of resources allocated for eMBB transmission that were used for URLLC transmission;

c) the resources within the resource set that were allocated for eMBB transmission which were used for URLLC transmission;

d) the resources used for the URLLC transmission(s) that resulted in pre-emption;

e) the resources used for each URLLC transmission which used resources falling within the resource set;

f) the resources used for each URLLC transmission which falls within the resource set, regardless if it resulted in pre-emption.

It will be appreciated that a significant reduction in the amount of resources required for transmitting pre-emption information can be achieved by means of a common pre-emption indicator, compared with transmitting a separate pre-emption indicator for every affected eMBB transmission or for every URLLC transmission which results in pre-emption (or both). It will be further appreciated that by grouping resources into resource sets, the amount of information needed to be conveyed in a single common pre-emption indicator is kept to a lower amount compared with, for example, conveying the location of a URLLC transmission within the full system bandwidth and/or within an indefinite time period. Similarly, dividing resources into resource sets will reduce the number of URLLC transmissions that must be reflected in any given common pre-emption indicator.

Where one or more subsets of the resources within the resource set are indicated within a common pre-emption indicator, the granularity with which the resources are indicated may be sufficient to precisely indicate the relevant resources (i.e. the portion or portions of the eMBB transmission which were pre-empted by one or more URLLC transmissions). In some embodiments, in order to reduce the amount of information required to be transmitted within a common pre-emption indicator, the resource set may be sub-divided and the one or more subdivisions of the resource set may be indicated, the sub-divisions being those containing the relevant resources. A dimension of a sub-division may be based on a characteristic of a URLCC transmission (e.g. the time dimension of a sub-division may correspond to the duration of a URLLC transmission). The dimensions of a sub-division may be pre-determined fractions of the corresponding dimension of the resource set.

The dimensions of the sub-division are configured and known in advance by the terminal device 200, e.g. by means of signalling received from the base station 102.

The device to whom the eMBB transmission is addressed may, based on the indication of the occurrence of pre-emption, puncture out a portion of the transmission (i.e. zero out the corresponding LLRs) or otherwise process the received signals in order to improve the probability of successfully decoding all or part of the eMBB transmission.

Depending on the information conveyed by the common pre-emption indicator, the receiving device may be able to determine exactly the affected resources, or a superset of the affected resources. It may combine the information received in the common pre-emption indicator with stored knowledge regarding the extent of the resource set and/or the extent of the resources allocated for the eMBB transmission, to determine a subset of the eMBB signals which have been (or may have been) pre-empted. For example, if the common pre-emption indicator indicates the extent of the URLLC transmission 304, and the UE has stored the resources 302 used for the eMBB transmission, the UE is able to determine the portion of the eMBB signals which were affected by the pre-emption by the URLLC transmission as the intersection of the resources 302 and URLLC transmission 304.

In the embodiment illustrated in Figure 3, the common pre-emption indicator transmission resources 306 used for the transmission of a common pre-emption indicator are outside the region of the associated resource set 308. In other embodiments, the resources used for the transmission of a common pre-emption indicator are a subset of the associated resource set, such as the common pre-emption indicator transmission resources 506 illustrated in Figure 5.

In some embodiments, a pre-emption indicator is transmitted after (i.e. later in time) than the latest (in time) resources in the associated resource set (e.g. after time t2 in Figure 3). Preferably, in order to minimize the delay between a receiving device completing the reception of an eMBB transmission and the device being able to determine whether the eMBB transmission was subject to pre-emption, a common pre-emption indicator is transmitted substantially aligned in time with the end (in time) of the associated resource set. In order to simplify processing at a base station, a pre-emption indicator may be transmitted starting at the end (in time) of the associated resource set as illustrated in Figure 8 (described below). Recognizing that the transmission time of a URLLC transmission may not be known to a gNB or a base station beforehand and that a common pre-emption indicator preferably indicates all preemptions occurring within the corresponding resource set, the common pre-emption indicator is preferably transmitted at the end of (and within) a resource set, or later using resources outside of the resource set.

In the embodiments illustrated, each resource set is associated with one common pre-emption indicator. In some (not shown) embodiments, multiple pre-emption indicators may be transmitted, indicative of any pre-emption that occurred within the resource set. This may improve the likelihood that the pre-emption information can be successfully decoded. Preferably in this case, the common pre-emption indicators are transmitted substantially simultaneously, in order to minimize latency, and preferably using resources separated in frequency in order to provide frequency diversity. Alternatively, the common pre-emption indicators are transmitted at different times within the resource set.

The first device 200 may attempt to decode a single instance of a given common pre-emption indicator, or may attempt to receive multiple instances. In some embodiments, different groups of devices are configured to monitor different common pre-emption indicator transmission resources associated with a given resource set. A group of devices may be configured to monitor one, or multiple common pre-emption indicator transmission resources.

Figure 4 illustrates a first resource set 402 and a second resource set 404 and associated common pre-emption indicators 406 and 408 respectively. Figure 4 shows a first eMBB transmission 410 and a second eMBB transmission 412 and illustrates the possibility that, in some embodiments, an eMBB transmission may use resources falling within the boundaries of multiple resource sets. In the example illustrated in Figure 4 the eMBB transmission 410 may be transmitted to the first device 200. In order to determine whether the eMBB transmission 410 has been the subject of pre-emption by one or more URLLC transmissions the first device 200 receives the signals transmitted in the common pre-emption indicator transmission resources associated with both of the common pre-emption indicators 406 and 408 and may thus determines whether any pre-emption had occurred within the boundaries of the associated resource sets 402 and 404.

Based on the common pre-emption indicators 406 and 408 the device 200 may determine, in the example illustrated in Figure 4, that no pre-emption occurred in either of the resource sets 402 and 404.

In the event that the device determined, based on one or more of the common pre-emption indicators 406 and 408, that pre-emption had occurred, the receiving device 200 may apply additional processing to the signals received on the resources allocated for the eMBB transmission 410 in order to increase the likelihood of error-free decoding. Such processing may include puncturing the affected data or setting to Ό' the indicated LLRs.

Figure 5 illustrates further aspects of the present disclosure. In particular Figure 5 illustrates the possibility that eMBB transmissions and resource sets are configured such that each eMBB

transmission is allocated resources which fall entirely within at most one resource set. For example, the eMBB transmission 502 may use resources which fall entirely within the resource set 504.

As such, for example, the first device 200, having determined that resources 502 have been allocated for the transmission of eMBB transmission 502 from the base station 102 to the device 200, needs only to receive a single pre-emption indicator, such as the pre-emption indicator 506, in order to determine whether pre-emption has occurred in respect of a given eMBB transmission.

In some embodiments of the present disclosure the resources which make up each resource set and the location of the pre-emption indicator in the time and frequency domain are configured according to a specification, such as a specification drafted by the Third Generation Partnership (3GPP(RTM)) project. In yet further embodiments the definition of the resource set boundaries and/or their associated pre-emption indicator locations is configured by the network and transmitted for example as part of system information or by means of a radio resource control (RRC) message (such as an RRC Reconfiguration Message or the like) by the base station 102.

In some embodiments, the resources which make up each resource set are preferably defined in terms of the time- and frequency-domain boundaries of each resource set, and may be known in advance to both the network and to a device which may be allocated resources for receiving eMBB data, where the resources may be pre-empted by the transmission of URLLC data.

The first device 200 may therefore determine, based on, for example, signals received from the base station 102, the resource set 504 in which the eMBB transmission 502 falls, and the device 200 is similarly able to determine the common pre-emption indicator transmission resource location for the pre-emption indicator 506 associated with the resource set 504. As noted further below, in another embodiment a control signal allocating the eMBB resources for the first device also indicates which common pre-emption indicator to monitor.

In another embodiment a common control signal (e.g. group common PDCCH) that carries an indicator, e.g. which may be referred to as a Slot Format Indicator, may signal the presence or absence of at least one common pre-emption indicator in the corresponding slot. The Slot Format Indicator may indicate a structure of the relevant slot, e.g. a number of symbols for downlink and uplink, a DMRS (demodulation reference signal) structure, and so on. In such an example embodiment, the structure of the common pre-emption indicator may also be signalled.

In some embodiments, a common pre-emption indicator may be transmitted using a common control channel, such as a group common PDCCH, which is also used to indicate a structure of the relevant slot, e.g. indicating one or more of a number of symbols for downlink and uplink, a DMRS (demodulation reference signal) structure, and so on. For example, the common preemption indicator may share a DCI or a group common PDCCH with a Slot Format Indicator. The common pre-emption indicator may thus indicate whether pre-emption has occurred in one or more slots prior to the slot with which the slot format indicator is associated.

In some embodiments, the device 200 need not be able to determine the boundaries of each resource set, provided that the device is able to determine at least one common pre-emption indicator transmission resource location which may carry a common pre-emption indicator relevant to each eMBB transmission which it receives.

In some examples, the common pre-emption indicator can implicitly or explicitly indicate the boundaries of its resource set. In some examples using an implicit indication, the start and end boundaries of the resource set are relative to the location of the common pre-emption indicator.

Thus, in some embodiments, the device 200 determines the extent of a resource set based on the determined common pre-emption indicator transmission resource location. For example, the device 200 determines, for example, in accordance with a standard, or based on signalling received from the base station 102, that a common pre-emption indicator transmission resource location uses resources starting at time t1 and at frequency f1 . Based on this, the device determines that the corresponding resource set extends from time t1 -T to t1 and from f1 -F to f1 in the frequency domain, where T and F are parameters known in advance to the device. The parameters T and F may be specified in a standard or communicated to the device from the base station, for example in broadcast system information, system information communicated by means of unicast or multicast transmission or by means of RRC signalling (e.g. such as in an RRC Reconfiguration message). In other embodiments, a different function may be used to determine the extent of a resource set based on the resources used to transmit the common pre-emption indicator; for example there may be a defined gap in frequency and or time between the resource set and the pre-emption indicator transmission resources.

In yet other example embodiments, the common pre-emption indicator itself indicates explicitly the extent of the resource set. For example, in the example of Figure 5, the common preemption indicator transmitted in the first common pre-emption indicator transmission resources 506 may indicate that the associated resource set extends from time t1 to time t2, and from frequency f2 to frequency f3.

In some examples, the extent of a resource set may be determined based on a combination of the location of a common pre-emption indicator transmission resources and information indicated by the common pre-emption indicator. For example, the common pre-emption indicator transmitted at 506 may indicate one or more of the magnitude of (t1 - t2) i.e. the duration of the associated resource set and the magnitude of (f3 - f2) i.e. the frequency range of the resource set. Based on the frequency f3 and time t2 associated with the common preemption indicator transmission resources, the device is able to determine the extent of the associated resource set.

Figure 5 also illustrates that in some embodiments, resource sets may not be contiguous in the time and/or the frequency domains. For example, as shown in Figure 5, two resource sets 504 and 506 are shown as being contiguous and adjacent in the frequency domain and both covering the time period between t1 and t2. Further resource sets 508 and 510 cover the same frequency ranges as the first resource sets 504 and 506 respectively and the time period from t3 to t4.

In general, the resource set boundaries may be configured so as not to cover all possible time and frequency resources which are available for downlink data transmission. For example, the frequency range or ranges which fall within the scope of the resource sets may vary over time.

In particular the network may configure resource sets to cover the portion(s) of the time and frequency resources limited to those resources in which URLLC transmissions may pre-empt eMBB data transmission. That is, the network may configure the resource sets such that time and/or frequency resources in which only eMBB transmissions may occur, or in which only URLLC transmissions can occur, are not associated with any resource set.

This further reduces the overhead associated with pre-emption signalling, since common preemption indicator signalling resources are not needed for resources where no pre-emption can possibly occur and hence are not associated with any resource set.

Figure 5 illustrates benefits of partitioning system resources into resource sets, compared with, for example, a single resource set covering all of the system bandwidth from time t1 to time t4. First, frequency or time resources (such as the time period between t2 and t3) in which pre- emption cannot occur need not be associated with a pre-emption indicator. In addition, within the time period from t1 to t4 there can be multiple URLLC transmission and the pre-emption indicator would need to cater for this, which would result in either an increase the number of bits within a DCI, or the base station 200 or a gNB having to transmit multiple DCIs (i.e. multiple PDCCH) within the common search space.

The first device 200 may therefore determine, for example, that the eMBB transmission 512 falls outside of any resource set and therefore is not subject to the possibility of pre-emption by a URLLC transmission.

Additionally or alternatively, the network may take into account the scope and location of configured resource sets when scheduling eMBB transmissions and URLLC transmissions. In particular, when receiving a URLLC for transmission it may determine that it is restricted to transmitting the URLLC data either within time and frequency resources which are dedicated for the transmission of URLLC data, or - if it is to result in the pre-emption of an ongoing eMBB transmission - within resources bounded by one or more resource sets. The URLLC transmission may be thus scheduled and transmitted in accordance with the pre-configured resource sets.

In some embodiments the duration of each resource set is constant, and the common preemption indicator may therefore occur periodically.

In some embodiments the resource set boundaries may repeat in time and/or frequency according to a pattern. As described above, it may not be necessary for resource sets to cover all time periods and all of the system bandwidth; as such, the repeating pattern may include resources that are not associated with any resource set.

Figure 6 illustrates yet another embodiment of the disclosure in which two or more resource sets may be configured to be overlapping in time and/or frequency. In Figure 6 a first resource set 602 is illustrated starting at time t1 and continuing to time t5. A second resource set 606 begins at t3 and ends at time t6. As such the time period between t3 and t5 falls within both the first resource set 602 and the second resource set 606. In the example illustrated in Figure 6, each resource set has an associated pre-emption indicator. A first common pre-emption indicator is associated with the first resource set 602 and is transmitted using first common pre-emption indicator transmissions resources 604 and a second common pre-emption indicator is associated with the second resource set 606 and is transmitted using second common preemption indicator transmissions resources 608. In the embodiment illustrated in Figure 6 each of the common pre-emption indicators 604 and 608 indicates whether pre-emption has occurred within the associated resource sets 602 and 606.

In the example illustrated in Figure 6 pre-emption occurs which impacts a first eMBB transmission 610 and a second eMBB transmission 612. A URLLC transmission 614 uses resources allocated to both the first and second eMBB transmissions 610 and 612. Since the pre-emption occurs in both resources sets 602 and 606, corresponding indicators will be transmitted as part of both of the common pre-emption indicators 604 and 608.

The first device 200 which is receiving the first eMBB transmission 610, determines which common pre-emption indicator or indicators need to be decoded in order to determine whether or not pre-emption has occurred in respect of the first eMBB transmission 610.

In the example in Figure 6, the device 200 which is receiving the first eMBB transmission 610 may determine that the first transmission 610 falls fully within the boundaries of the first resource set 602 and therefore decodes the first common pre-emption indicator transmitted using the first common pre-emption indicator transmissions resources 604. Based on the

contents of the pre-emption indicator the device is able to determine that pre-emption occurred within the bounds of the resource set 602 and thus processes the received eMBB data accordingly.

Similarly the second device 202 receiving the second eMBB transmission 612 may determine that that eMBB transmission 612 falls entirely within the bounds of the second resource set 606 and may therefore decode the common pre-emption indicator transmitted in the second common pre-emption indicator transmissions resources 608. Based on decoding the common pre-emption indicator transmitted using the second common pre-emption indicator transmissions resources 608 the device 202 determines that pre-emption occurred within the resource set 606 and therefore processes the received eMBB data accordingly.

WE CLAIMS

1 . A method of receiving data by a terminal device, comprising:

determining an allocation of downlink resources of a wireless radio interface for the reception of data by the terminal device,

receiving signals representing the data within the allocated downlink resources, wherein the receiving includes:

determining that the allocated downlink resources include at least a portion of a first predetermined resource set,

receiving via the wireless radio interface, signals within first predetermined common pre-emption indicator transmission resources allocated for the transmission of a first pre-emption indicator associated with the first predetermined resource set, and

determining, based on the signals received within the first predetermined common preemption indicator transmission resources, whether a portion of the signals received within the allocated downlink resources and within the first predetermined resource set comprises data signals transmitted to a different terminal device.

2. A method according to claim 1 , wherein the signals received within the first common preemption indicator transmission resources comprise a common pre-emption indicator and

the common pre-emption indicator identifies a set of resources within the first predetermined resource set, the identified set of resources including at least a portion of the resources within the first predetermined resource set allocated for the downlink transmission of data to the terminal device in which data was transmitted to the different terminal device.

3. A method according to claim 1 , wherein the signals received within the first predetermined common pre-emption indicator transmission resources comprise a common pre-emption indicator and

the common pre-emption indicator identifies a set of resources used for the transmission of the data signals to the different terminal device.

4. A method according to claim 2, comprising

decoding the data from the received signals representing the data, wherein in decoding the data, the terminal device ignores signals received during the set of resources identified by the common pre-emption indicator.

5. A method according to claim 1 , wherein

the first common pre-emption indicator transmission resources allocated for the transmission of a pre-emption indicator associated with the first predetermined resource set is a portion of the first predetermined resource set.

6. A method according to claim 1 , wherein the first predetermined common pre-emption indicator transmission resources are within a first bandwidth part allocated to the terminal device and within a second bandwidth part allocated to a second terminal device, and the portion of the signals received within the allocated downlink resources comprising data signals transmitted to a different terminal device are within the first bandwidth part and the second bandwidth part.

7. A method according to claim 1 , wherein the first bandwidth portion is divided into a plurality of predetermined resource sets one of which is the first predetermined resource set and each predetermined resource set is associated with separate common pre-emption indicator transmission resources.

8. A method according to claim 1 , wherein

the end of the first predetermined set of downlink resources allocated for the transmission of a pre-emption indicator associated with the first predetermined resource set occurs contemporaneously with or after the end of the first predetermined resource set.

9. A method according to claim 1 , wherein

the first common pre-emption indicator transmission resources allocated for the transmission of a pre-emption indicator associated with the first predetermined resource set is outside of the first predetermined resource set

10. A method according to claim 1 , comprising:

determining that a second predetermined resource set includes at least a portion of the allocated downlink resources,

receiving signals within a second predetermined set of downlink resources allocated for the transmission of a second pre-emption indicator associated with the second predetermined resource set, and

determining, based on the signals received within the second predetermined set of downlink resources, whether a portion of the signals received within the allocated downlink resources and within the second predetermined resource set comprises data signals transmitted to the different terminal device.

1 1 . A method according to claim 10, wherein the second predetermined resource set comprises a portion of the first predetermined resource set.

12. A method according to claim 1 , wherein all of the allocated downlink resources occur within the first predetermined resource set.

13. A method according to claim 1 , comprising

receiving signalling information from the network, the signalling information defining at least one of the first predetermined resource set and the first predetermined common pre-emption indicator transmission resources allocated for the transmission of the first pre-emption indicator associated with the first predetermined resource set.

14. A method according to claim 1 , comprising

receiving via the wireless radio interface, signals within downlink resources allocated for the transmission of a supplementary pre-emption indicator, the supplementary pre-emption indicator associated with the allocated downlink resources for the reception of data by the terminal device, and

determining, based on the signals received within the downlink resources allocated for the transmission of a supplementary pre-emption indicator, whether a portion of the signals received within the allocated downlink resources comprises data signals transmitted to a different terminal device.

15. A method according to claim 1 , wherein

the first predetermined resource set is characterized by a contiguous range of predetermined frequencies between a first frequency and a second frequency for a predetermined time period between a first resource set starting time and a first resource set ending time.

16. A method according to claim 15, comprising:

receiving via the wireless radio interface signalling information indicating at least one of the first frequency, the second frequency, the first resource set starting time and the first resource set ending time.

17. A method according to claim 15, comprising:

determining at least one of the first frequency, the second frequency, the first resource set starting time and the first resource set ending time based on the first predetermined common pre-emption indicator transmission resources.

18. A method according to claim 17, wherein:

the first frequency is offset from a lower frequency edge of the first predetermined common pre-emption indicator transmission resources by a first predetermined frequency offset and

the first resource set start time is determined based on the start time of the first predetermined common pre-emption indicator transmission resources and a predetermined time offset.

19. A method of receiving data by a terminal device, comprising:

determining an allocation of downlink resources of a wireless radio interface for the reception of data by the terminal device,

receiving signals representing the data within the allocated downlink resources, wherein the receiving includes:

determining that the allocated downlink resources include at least a portion of a predetermined resource set,

determining that a time duration between an end of the allocated downlink resources and a start oft predetermined common pre-emption indicator transmission resources allocated for the transmission of a pre-emption indicator associated with the predetermined resource set exceeds a threshold,

responsive to the determining, receiving via the wireless radio interface signals within a set of downlink resources allocated for a transmission of a supplementary pre-emption indicator associated with the allocated downlink resources and

determining, based on the signals received within the set of downlink resources allocated for the transmission of the supplementary pre-emption indicator associated with the allocated downlink resources, whether a portion of the signals received within the allocated downlink resources comprises data signals transmitted to a different terminal device.

20. A method of transmitting first data to a first terminal device, comprising:

allocating a set of downlink resources of a wireless radio interface for the transmission of the first data to the first terminal device,

transmitting second data to a second terminal device, using downlink resources comprising at least a portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device,

determining that the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for transmitting the second data to the second terminal device includes at least a part of a first resource set, and

transmitting a first pre-emption indicator associated with the first resource set, the first pre-emption indicator identifying a set of resources within the first resource set, the identified set of resources including at least the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device used for transmitting the second data to the second terminal device.

21 . A method according to claim 20, wherein

the first pre-emption indicator associated with the first resource set is transmitted using a portion of the first resource set.

22. A method according to claim 20, wherein the first pre-emption indicator associated with the first resource set is transmitted using resources outside of the first resource set.

23. A method according to claim 20, wherein

the end of the transmission of the first pre-emption indicator occurs contemporaneously with or after the end of the first resource set.

24. A method according to claim 20, comprising

receiving the second data for transmission to the second terminal device, wherein the second data for transmission to the second terminal device is associated with a low latency requirement requiring the second data to be transmitted to the second terminal device before the end of the resources allocated for the transmission of the first data to the first terminal device.

25. A method according to claim 20, comprising

determining that the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for the transmitting of the second data to the second terminal device includes at least a part of a second resource set, and transmitting a second pre-emption indicator associated with the second resource set, the second pre-emption indicator identifying a set of resources within the second resource set, the identified set of resources including at least the portion of the set of downlink resources allocated for the transmission of data to the first terminal device used for transmitting data to the second terminal device.

26. A method according to claim 20, comprising

transmitting signalling information, the signalling information defining at least one of the first predetermined resource set and a predetermined set of downlink resources allocated for the transmission of the first pre-emption indicator associated with the first resource set.

27. A method according to claim 20, comprising

transmitting a third pre-emption indicator, the third pre-emption indicator associated with the allocated downlink resources for the transmission of the first data to the first terminal device, wherein the third pre-emption indicator identifies the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device used for transmitting the second data to the second terminal device.

28. A method according to claim 20, wherein

a predetermined resource set is characterized by a contiguous range of predetermined frequencies between a first frequency and a second frequency for a predetermined time period between a resource set starting time and a resource set ending time.

29. A method of transmitting first data to a first terminal device, comprising:

allocating a set of downlink resources of a wireless radio interface for the transmission of the first data to the first terminal device,

transmitting second data to a second terminal device, using downlink resources comprising at least a portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device,

determining that the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for transmitting the second data to the second terminal device includes at least a part of a predetermined resource set, determining that a time duration between an end of the allocated downlink resources and a start of predetermined common pre-emption indicator transmission resources allocated for the transmission of a first pre-emption indicator associated with the predetermined resource set exceeds a threshold, and

responsive to the determining, transmitting a second pre-emption indicator, the second pre-emption indicator associated with the allocated downlink resources for the transmission of the first data to the first terminal device,

wherein the second pre-emption indicator identifies the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for transmitting the second data to the second terminal device.

30. A terminal device for receiving data, comprising:

receiver circuitry and control circuitry, wherein the control circuitry is configured to determine an allocation of downlink resources of a wireless radio interface for the reception of data by the terminal device,

to control the receiver circuitry to receive signals representing the data within the allocated downlink resources,

to determine that the allocated downlink resources include at least a portion of a first predetermined resource set,

to control the receiver circuitry to receive via the wireless radio interface, signals within first predetermined common pre-emption indicator transmission resources allocated for the transmission of a first pre-emption indicator associated with the first predetermined resource set, and

to determine, based on the signals received within the first predetermined common preemption indicator transmission resources, whether a portion of the signals received within the allocated downlink resources and within the first predetermined resource set comprises data signals transmitted to a different terminal device.

31 . A terminal device according to claim 30, wherein the signals received within the first common pre-emption indicator transmission resources comprise a common pre-emption indicator and

the common pre-emption indicator identifies a set of resources within the first predetermined resource set, the identified set of resources including at least a portion of the resources within the first predetermined resource set allocated for the downlink transmission of data to the terminal device in which data was transmitted to the different terminal device.

32. A terminal device according to claim 30, wherein the signals received within the first predetermined common pre-emption indicator transmission resources comprise a common preemption indicator and

the common pre-emption indicator identifies a set of resources used for the transmission of the data signals to the different terminal device.

33. A terminal device according to claim 31 , wherein the controller circuitry is configured to decode the data from the received signals representing the data, wherein in decoding the data, the controller circuitry ignores signals received during the set of resources identified by the common pre-emption indicator.

34. A terminal device according to claims 30, wherein

the first common pre-emption indicator transmission resources allocated for the transmission of a pre-emption indicator associated with the first predetermined resource set is a portion of the first predetermined resource set.

35. A terminal device according to claims 30, wherein the first predetermined common preemption indicator transmission resources are within a first bandwidth part allocated to the terminal device and within a second bandwidth part allocated to a second terminal device, and the portion of the signals received within the allocated downlink resources comprising data signals transmitted to a different terminal device are commonly within the first bandwidth part and the second bandwidth part.

36. A terminal device according to claim 35, wherein the first bandwidth portion is divided into a plurality of predetermined resource sets one of which is the first predetermined resource set and each predetermined resource set is associated with separate common pre-emption indicator transmission resources.

37. A terminal device according to claim 30, wherein

the end of the first predetermined set of downlink resources allocated for the transmission of a pre-emption indicator associated with the first predetermined resource set occurs contemporaneously with or after the end of the first predetermined resource set.

38. A terminal device according to claim 30, wherein

the first common pre-emption indicator transmission resources allocated for the transmission of a pre-emption indicator associated with the first predetermined resource set is outside of the first predetermined resource set

39. A terminal device according to claim 30, wherein the controller circuitry is configured to determine that a second predetermined resource set includes at least a portion of the allocated downlink resources,

to control the receiver circuitry to receive signals within a second predetermined set of downlink resources allocated for the transmission of a second pre-emption indicator associated with the second predetermined resource set, and

to determine, based on the signals received within the second predetermined set of downlink resources, whether a portion of the signals received within the allocated downlink resources and within the second predetermined resource set comprises data signals transmitted to the different terminal device.

40. A terminal device according to claim 39, wherein the second predetermined resource set comprises a portion of the first predetermined resource set

41 . A terminal device according to claim 30, wherein all of the allocated downlink resources occur within the first predetermined resource set.

42. A terminal device according to claim 30, wherein the controller circuitry is configured to control the receiver circuitry to receive signalling information from the network, the signalling information defining at least one of the first predetermined resource set and the first predetermined common pre-emption indicator transmission resources allocated for the

transmission of the first pre-emption indicator associated with the first predetermined resource set.

43. A terminal device according to claim 30, wherein the controller circuitry is configured to control the receiver circuitry to receive via the wireless radio interface, signals within downlink resources allocated for the transmission of a supplementary pre-emption indicator, the supplementary pre-emption indicator associated with the allocated downlink resources for the reception of data by the terminal device, and

the controller circuitry is configured to determine, based on the signals received within the downlink resources allocated for the transmission of a supplementary pre-emption indicator, whether a portion of the signals received within the allocated downlink resources comprises data signals transmitted to a different terminal device.

44. A terminal device according to claim 30, wherein

the first predetermined resource set is characterized by a contiguous range of predetermined frequencies between a first frequency and a second frequency for a predetermined time period between a first resource set starting time and a first resource set ending time.

45. A terminal device according to claim 44, wherein the controller circuitry is configured to control the receiver circuitry to receive via the wireless radio interface signalling information indicating at least one of the first frequency the second frequency, the first resource set starting time and the first resource set ending time.

46. A terminal device according to claim 44, wherein the controller circuitry is configured to determine at least one of the first frequency, the second frequency, the first resource set starting time and the first resource set ending time based on the first predetermined common pre-emption indicator transmission resources.

47. A terminal device according to claim 46, wherein the first frequency is offset from a lower frequency edge of the first predetermined common pre-emption indicator transmission resources by a first predetermined frequency offset and the first resource set start time is determined based on the start time of the first predetermined common pre-emption indicator transmission resources and a predetermined time offset.

48. A terminal device for receiving data, comprising:

receiver circuitry and control circuitry, wherein the control circuitry is configured to determine an allocation of downlink resources of a wireless radio interface for the reception of data by the terminal device,

to control the receiver circuitry to receive signals representing the data within the allocated downlink resources, wherein the receiving includes:

to determine that the allocated downlink resources include at least a portion of a first predetermined resource set,

to determine that a time duration between an end of the allocated downlink resources and a start of predetermined common pre-emption indicator transmission resources allocated for the transmission of a first pre-emption indicator associated with the first predetermined resource set exceeds a threshold,

responsive to the determining, to control the receiver circuitry to receive via the wireless radio interface signals within a set of downlink resources allocated for a transmission of a supplementary pre-emption indicator associated with the allocated resources and

determining, based on the signals received within the set of downlink resources allocated for the transmission of the supplementary pre-emption indicator associated with the allocated resources, whether a portion of the signals received within the allocated downlink resources comprises data signals transmitted to a different terminal device.

49. An infrastructure equipment for forming part of a radio network part of a wireless communications network, the infrastructure equipment comprising

transmitter circuitry configured to transmit radio signals via a wireless access interface formed by the infrastructure equipment to one or more terminal devices,

receiver circuitry configured to receive radio signals transmitted from the one or more terminal devices via the wireless access interface, and

controller circuitry configured to control the transmitter circuitry and the receiver circuitry to transmit data carried by the radio signals to the one or more terminal devices and to receive data carried by the radio signals from the one or more terminal devices, the controller circuitry being configured with the receiver circuitry

to allocate a set of downlink resources of a wireless radio interface for the transmission of the first data to the first terminal device,

to transmit second data to a second terminal device, using downlink resources comprising at least a portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device,

to determine that the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for transmitting the second data to the second terminal device includes at least a part of a first resource set, and

to transmit a first pre-emption indicator associated with the first resource set, the first pre-emption indicator identifying a set of resources within the first resource set, the identified set of resources including at least the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device used for transmitting the second data to the second terminal device.

50. An infrastructure equipment according to claim 49, wherein

the first pre-emption indicator associated with the first resource set is transmitted using a portion of the first resource set.

51 . An infrastructure equipment according to claim 49, wherein the first pre-emption indicator associated with the first resource set is transmitted using resources outside of the first resource set.

52. An infrastructure equipment according to claim 49, wherein

the end of the transmission of the first pre-emption indicator occurs contemporaneously with or after the end of the first resource set.

53. An infrastructure equipment according to claim 49, comprising

receiving the second data for transmission to the second terminal device, wherein the second data for transmission to the second terminal device is associated with a low latency requirement requiring the second data to be transmitted to the second terminal device before the end of the resources allocated for the transmission of the first data to the first terminal device.

54. An infrastructure equipment according to claim 49, comprising

determining that the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for the transmitting of the second data to the second terminal device includes at least a part of a second resource set, transmitting a second pre-emption indicator associated with the second resource set, the second pre-emption indicator identifying a set of resources within the second resource set, the identified set of resources including at least the portion of the set of downlink resources allocated for the transmission of data to the first terminal device used for transmitting data to the second terminal device.

55. An infrastructure equipment according to claim 49, comprising

transmitting signalling information, the signalling information defining at least one of the first predetermined resource set and a predetermined set of downlink resources allocated for the transmission of the first pre-emption indicator associated with the first resource set.

56. An infrastructure equipment according to claim 49, comprising

transmitting a third pre-emption indicator, the third pre-emption indicator associated with the allocated downlink resources for the transmission of the first data to the first terminal device, wherein the third pre-emption indicator identifies the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device used for transmitting the second data to the second terminal device.

57. An infrastructure equipment according to claim 49, wherein

a predetermined resource set is characterized by a contiguous range of predetermined frequencies between a first frequency and a second frequency for a predetermined time period between a resource set starting time and a resource set ending time.

58. An infrastructure equipment according to claim 49, wherein

the portion of the signals received within the allocated downlink resources comprising data signals transmitted to a different terminal device are within the first bandwidth part and the second bandwidth part.

59. An infrastructure equipment according to claim 58, wherein the first bandwidth portion is divided into a plurality of predetermined resource sets one of which is the first predetermined resource set and each predetermined resource set is associated with separate common pre-emption indicator transmission resources.

60. An infrastructure equipment for forming part of a radio network part of a wireless communications network, the infrastructure equipment comprising

transmitter circuitry configured to transmit radio signals via a wireless access interface formed by the infrastructure equipment to one or more terminal devices,

receiver circuitry configured to receive radio signals transmitted from the one or more terminal devices via the wireless access interface, and

controller circuitry configured to control the transmitter circuitry and the receiver circuitry to transmit data carried by the radio signals to the one or more terminal devices and to receive data carried by the radio signals from the one or more terminal devices, the controller circuitry being configured with the receiver circuitry

to allocate a set of downlink resources of a wireless radio interface for the transmission of the first data to the first terminal device,

to transmit second data to a second terminal device, using downlink resources comprising at least a portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device,

to determine that the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for transmitting the second data to the second terminal device includes at least a part of a first resource set,

to determine that a time duration between an end of the allocated downlink resources and a start of a first predetermined set of downlink resources allocated for the transmission of a first pre-emption indicator associated with the first predetermined resource set exceeds a threshold, and

responsive to the determining, to transmit a second pre-emption indicator, the second pre-emption indicator associated with the allocated downlink resources for the transmission of the first data to the first terminal device,

wherein the second pre-emption indicator identifies the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for transmitting the second data to the second terminal device.

61 . Circuitry for a terminal device for receiving data, the terminal device comprising:

receiver circuitry and control circuitry, wherein the control circuitry is configured to determine an allocation of downlink resources of a wireless radio interface for the reception of data by the terminal device,

to control the receiver circuitry to receive signals representing the data within the allocated downlink resources,

to determine that the allocated downlink resources include at least a portion of a first predetermined resource set,

to control the receiver circuitry to receive via the wireless radio interface, signals within first predetermined common pre-emption indicator transmission resources allocated for the transmission of a first pre-emption indicator associated with the first predetermined resource set, and

to determine, based on the signals received within the first predetermined common preemption indicator transmission resources, whether a portion of the signals received within the allocated downlink resources and within the first predetermined resource set comprises data signals transmitted to a different terminal device.

62. Circuitry for an infrastructure equipment for forming part of a radio network part of a wireless communications network, the infrastructure equipment comprising

transmitter circuitry configured to transmit radio signals via a wireless access interface formed by the infrastructure equipment to one or more terminal devices,

receiver circuitry configured to receive radio signals transmitted from the one or more terminal devices via the wireless access interface, and

controller circuitry configured to control the transmitter circuitry and the receiver circuitry to transmit data carried by the radio signals to the one or more terminal devices and to receive data carried by the radio signals from the one or more terminal devices, the controller circuitry being configured with the receiver circuitry

to allocate a set of downlink resources of a wireless radio interface for the transmission of the first data to the first terminal device,

to transmit second data to a second terminal device, using downlink resources comprising at least a portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device,

to determine that the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for transmitting the second data to the second terminal device includes at least a part of a first resource set, and

to transmit a first pre-emption indicator associated with the first resource set, the first pre-emption indicator identifying a set of resources within the first resource set, the identified set of resources including at least the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device used for transmitting the second data to the second terminal device.

63. A computer program product comprising computer readable instructions which, when loaded onto a computer, configure the computer to perform a method according to any one of claims 1 , 18, 20, or 29.

64. A method of receiving data by a terminal device, comprising:

determining an allocation of downlink resources of a wireless radio interface for the reception of data by the terminal device,

receiving signals representing the data within the allocated downlink resources, wherein the receiving includes:

determining that the allocated downlink resources include at least a portion of a first predetermined resource set,

receiving via the wireless radio interface, signals within first predetermined common preemption indicator transmission resources allocated for the transmission of a first pre-emption indicator associated with the first predetermined resource set, and

determining, based on the signals received within the first predetermined common pre-emption indicator transmission resources, whether a portion of the signals received within the allocated downlink resources and within the first predetermined resource set comprises data signals transmitted to a different terminal device, wherein the first predetermined common preemption indicator transmission resources are within a first bandwidth part allocated to the terminal device and within a second bandwidth part allocated to a second terminal device, and the portion of the signals received within the allocated downlink resources comprising data signals transmitted to a different terminal device are within the first bandwidth part and the second bandwidth part.

65. A method according to claim 64, wherein the first bandwidth portion is divided into a plurality of predetermined resource sets one of which is the first predetermined resource set and each predetermined resource set is associated with separate common pre-emption indicator transmission resources.

66. A terminal device for receiving data, comprising:

receiver circuitry and control circuitry, wherein the control circuitry is configured to determine an allocation of downlink resources of a wireless radio interface for the reception of data by the terminal device,

to control the receiver circuitry to receive signals representing the data within the allocated downlink resources,

to determine that the allocated downlink resources include at least a portion of a first predetermined resource set,

to control the receiver circuitry to receive via the wireless radio interface, signals within first predetermined common pre-emption indicator transmission resources allocated for the transmission of a first pre-emption indicator associated with the first predetermined resource set, and

to determine, based on the signals received within the first predetermined common preemption indicator transmission resources, whether a portion of the signals received within the allocated downlink resources and within the first predetermined resource set comprises data signals transmitted to a different terminal device, wherein the first predetermined common pre-emption indicator transmission resources are within a first bandwidth part allocated to the terminal device and within a second bandwidth part allocated to a second terminal device, and the portion of the signals received within the allocated downlink resources comprising data signals transmitted to a different terminal device are commonly within the first bandwidth part and the second bandwidth part.

67. A terminal device according to claim 66, wherein the first bandwidth portion is divided into a plurality of predetermined resource sets one of which is the first predetermined resource set and each predetermined resource set is associated with separate common pre-emption indicator transmission resources.

68. An infrastructure equipment for forming part of a radio network part of a wireless communications network, the infrastructure equipment comprising

transmitter circuitry configured to transmit radio signals via a wireless access interface formed by the infrastructure equipment to one or more terminal devices,

receiver circuitry configured to receive radio signals transmitted from the one or more terminal devices via the wireless access interface, and

controller circuitry configured to control the transmitter circuitry and the receiver circuitry to transmit data carried by the radio signals to the one or more terminal devices and to receive data carried by the radio signals from the one or more terminal devices, the controller circuitry being configured with the receiver circuitry

to allocate a set of downlink resources of a wireless radio interface for the transmission of the first data to the first terminal device,

to transmit second data to a second terminal device, using downlink resources comprising at least a portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device,

to determine that the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device that is used for transmitting the second data to the second terminal device includes at least a part of a first resource set, and

to transmit a first pre-emption indicator associated with the first resource set, the first pre-emption indicator identifying a set of resources within the first resource set, the identified set of resources including at least the portion of the set of downlink resources allocated for the transmission of the first data to the first terminal device used for transmitting the second data to the second terminal device wherein the first predetermined common pre-emption indicator transmission resources are within a first bandwidth part allocated to the terminal device and within a second bandwidth part allocated to a second terminal device, and the portion of the signals received within the allocated downlink resources comprising data signals transmitted to a different terminal device are within the first bandwidth part and the second bandwidth part.

69. An infrastructure equipment according to claim 68, wherein the first bandwidth portion is divided into a plurality of predetermined resource sets one of which is the first predetermined resource set and each predetermined resource set is associated with separate common preemption indicator transmission resources.