WO2019105477A1 - Détermination de symboles de données dans un créneau pour transmission de données - Google Patents

Détermination de symboles de données dans un créneau pour transmission de données Download PDF

Info

Publication number
WO2019105477A1
WO2019105477A1 PCT/CN2018/118714 CN2018118714W WO2019105477A1 WO 2019105477 A1 WO2019105477 A1 WO 2019105477A1 CN 2018118714 W CN2018118714 W CN 2018118714W WO 2019105477 A1 WO2019105477 A1 WO 2019105477A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency domain
user equipment
data communication
base station
domain resource
Prior art date
Application number
PCT/CN2018/118714
Other languages
English (en)
Inventor
Jia Shen
Zhenshan Zhao
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp., Ltd. filed Critical Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority to CN201880047845.2A priority Critical patent/CN110945937B/zh
Publication of WO2019105477A1 publication Critical patent/WO2019105477A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to apparatuses and methods for allocating resources for communication between a user equipment and a base station. Examples of the present disclosure allow a user equipment to determine data symbols in a slot that are allocated for data communication between the user equipment and a base station.
  • a finite amount of communication resources are usually shared between a plurality of user equipments.
  • the network may share resources by allocating a portion of the available resources to individual user equipments based on the data transfer requirements of each user equipment.
  • Resources can be allocated in the time domain, frequency domain, or both.
  • the network may allocate resources in the time domain by permitting a user equipment to transmit and/or receive during a specific frame, subframe or time slot.
  • the network may allocate resources in the frequency domain by permitting a user equipment to transmit and/or receive using a specific frequency or frequency range.
  • a slot is the basic unit of time domain resource allocation for data channels and control channels. For example, when a slot is allocated to a physical uplink control channel (PUCCH) , the whole of that slot is used for PUCCH transmission.
  • PUCCH physical uplink control channel
  • a problem with allocating whole slots is that it can result in an inefficient usage of resources, since a particular transmission may not require the entire slot. Once a slot has been allocated, that slot is no longer available for other purposes. That is, any portion of the slot that is unused by the transmission to which is allocated cannot be used for other transmissions.
  • a first aspect of the present disclosure provides a method of allocating resources for communication between a user equipment and a base station.
  • the method is performed at the user equipment, and comprises: receiving first resource allocation information, wherein the first resource allocation information allocates resources for a first data communication between the user equipment and the base station in a common sub-period of each of a plurality of time periods; receiving second resource allocation information for a second data communication between the user equipment and the base station; and identifying, based on the first and second resource allocation information, a further sub-period of at least one of the plurality of time periods as being allocated for the second data communication.
  • Identifying the further sub-period may include identifying one or more sub-periods of the at least one of the plurality of time periods that are adjacent in time to the common sub-period and not otherwise allocated.
  • the method may further comprise communicating with the base station by: transmitting data of the second data communication to the base station during the further sub-period; or receiving data of the second data communication from the base station during the further sub-period.
  • Each time period may be a slot, and each sub-period may be a symbol.
  • the first resource allocation information may indicate a first frequency domain resource for the first data communication.
  • the second resource allocation information may indicate a second frequency domain resource.
  • the method may further comprise identifying the second frequency domain resource as being allocated for the second data communication.
  • the method may further comprise identifying a third frequency domain resource as being allocated for the second data communication based on the first frequency domain resource and the second frequency domain resource. Identifying the third frequency domain resource may comprise subtracting the second frequency domain resource from the first frequency domain resource.
  • the method may further comprise identifying the third frequency domain resource as being allocated for the second data communication during the common sub-period.
  • the method may further comprise identifying the second frequency domain resource as being allocated for the second data communication during the further sub-period.
  • the method may further comprise communicating with the base station by: transmitting data of the second data communication to the base station using the identified frequency domain resource; or receiving data of the second data communication from the base station using the identified frequency domain resource.
  • a frequency domain resource comprises one or more subcarriers.
  • a further aspect of the present disclosure provides a user equipment configured to perform the previously-described method.
  • the user equipment may comprise means for performing any of the steps of the method.
  • the user equipment may comprise one or more processors communicatively coupled to a memory storing processor-executable instructions that, when executed by the one or more processors, cause the user equipment to perform the method.
  • a further aspect of the present disclosure provides a user equipment comprising: a transceiver configured to receive first resource allocation information, wherein the first resource allocation information allocates resources for a first data communication between the user equipment and a base station in a common sub-period of each of a plurality of time periods, and receive second resource allocation information for a second data communication between the user equipment and the base station; and a processor configured to identify, based on the first and second resource allocation information, a further sub-period of at least one of the plurality of time periods as being allocated for the second data communication.
  • the processor may be configured to identify the further sub-period by identifying one or more sub-periods of the at least one of the plurality of time periods that are adjacent in time to the common sub-period and not otherwise allocated.
  • the user equipment may be further configured to communicate with the base station by: transmitting data of the second data communication to the base station during the further sub-period; or receiving data of the second data communication from the base station during the further sub-period.
  • Each time period may be a slot, and wherein each sub-period may be a symbol.
  • the second resource allocation information may indicate a second frequency domain resource.
  • the processor may be further configured to identify the second frequency domain resource as being allocated for the second data communication.
  • the first resource allocation information may indicate a first frequency domain resource for the first data communication, and the processor may be further configured to identify a third frequency domain resource as being allocated for the second data communication based on the first frequency domain resource and the second frequency domain resource.
  • the processor may be configured to identify the third frequency domain resource by subtracting the second frequency domain resource from the first frequency domain resource.
  • the processor may be configured to identify the third frequency domain resource as being allocated for the second data communication during the common sub-period.
  • the processor may be configured to identify the second frequency domain resource as being allocated for the second data communication during the further sub-period.
  • the user equipment may be configured to communicate with the base station by: transmitting data of the second data communication to the base station using the identified frequency domain resource; or receiving data of the second data communication from the base station using the identified frequency domain resource.
  • a frequency domain resource may comprise one or more subcarriers.
  • a further aspect of the present disclosure provides a method of allocating resources for communication between a user equipment and a base station.
  • the method is performed at the base station, and comprises: transmitting first resource allocation information to the user equipment, wherein the first resource allocation information allocates resources for a first data communication between the user equipment and the base station in a common sub-period of each of a plurality of time periods; and transmitting second resource allocation information to the user equipment, wherein the first resource allocation information and the second resource allocation information collectively allocate resources for a second data communication between the user equipment and the base station.
  • the method may further comprise identifying, prior to transmitting the second resource allocation information, a further sub-period of at least one of the plurality of time periods in which resources are available to be allocated for the second data communication between the user equipment and the base station.
  • the method may further comprise communicating with the user equipment by: receiving data of the second data communication from the user equipment during the further sub-period; or transmitting data of the second data communication to the user equipment during the further sub-period.
  • Each time period may be a slot, and each sub-period may be a symbol.
  • the first resource allocation information may indicate a first frequency domain resource for the first data communication.
  • the second resource allocation information may indicate a second frequency domain resource.
  • the method may further comprise allocating the second frequency domain resource for the second data communication.
  • the method may further comprise allocating a third frequency domain resource for the second data communication, wherein the third frequency domain resource is identifiable based on the first frequency domain resource and the second frequency domain resource.
  • the third frequency domain resource may be identifiable by subtracting the second frequency domain resource from the first frequency domain resource.
  • the method may further comprise allocating the third frequency domain resource for the second data communication during the common sub-period.
  • the method may further comprise allocating the second frequency domain resource for the second data communication during the further sub-period.
  • the method may further comprise communicating with the user equipment by: receiving the second data communication from the user equipment using the identified frequency domain resource; or transmitting the second data communication to the user equipment using the identified frequency domain resource.
  • a frequency domain resource may comprise one or more subcarriers.
  • a further aspect of the present disclosure provides a base station configured to perform the previously-described method.
  • the base station may comprise means for performing any of the steps of the method.
  • the base station may comprise one or more processors communicatively coupled to a memory storing processor-executable instructions that, when executed by the one or more processors, cause the base station to perform the method.
  • a further aspect of the present disclosure provides a base station comprising a transceiver and a processor, wherein the transceiver is configured to: transmit first resource allocation information to a user equipment, wherein the first resource allocation information allocates resources for a first data communication between the user equipment and the base station in a common sub-period of each of a plurality of time periods; and transmit second resource allocation information to the user equipment, wherein the first resource allocation information and the second resource allocation information collectively allocate resources for a second data communication between the user equipment and the base station.
  • the processor may be configured to identify, prior to the transceiver transmitting the second resource allocation information, a further sub-period of at least one of the plurality of time periods in which resources are available to be allocated for the second data communication between the user equipment and the base station.
  • the base station may be configured to communicate with the user equipment by: receiving data of the second data communication from the user equipment during the further sub-period; or transmitting data of the second data communication to the user equipment during the further sub-period.
  • Each time period may be a slot, and wherein each sub-period may be a symbol.
  • the second resource allocation information may indicate a second frequency domain resource.
  • the processor may be further configured to allocate the second frequency domain resource for the second data communication.
  • the first resource allocation information may indicate a first frequency domain resource for the first data communication, and the processor may be further configured to allocate a third frequency domain resource for the second data communication, wherein the third frequency domain resource is identifiable based on the first frequency domain resource and the second frequency domain resource.
  • the third frequency domain resource may be identifiable by subtracting the second frequency domain resource from the first frequency domain resource.
  • the processor may be further configured to allocate the third frequency domain resource for the second data communication during the common sub-period.
  • the processor may be further configured to allocate the second frequency domain resource for the second data communication during the further sub-period.
  • the base station may be further configured to communicate with the user equipment by: receiving the data of second data communication from the user equipment using the identified frequency domain resource; or transmitting data of the second data communication to the user equipment using the identified frequency domain resource.
  • a frequency domain resource may comprise one or more subcarriers.
  • a further aspect of the present disclosure provides a communication system comprising a user equipment and a base station, which collectively are configured to perform any of the methods disclosed herein.
  • a further aspect of the present disclosure provides a processor-readable medium comprising instructions which, when executed by one or more processors, cause any of the methods disclosed herein to be performed.
  • the present disclosure also provides methods and apparatuses in which a user equipment, or mobile station, receives a first resource allocation information for a first data transmission.
  • the mobile station receives a second resource allocation information for a second data transmission.
  • the mobile station determines the actual resources for the second data transmission jointly based on the first and second resource allocation information.
  • the actual time domain resource for the second data transmission is equal to the resource indicated by the second resource allocation information minus the resource indicated by first resource allocation information.
  • the actual frequency domain resource for the second data transmission is equal to the resource indicated by the second resource allocation information.
  • the actual frequency domain resource for the second data transmission is: equal to the resource indicated by the second resource allocation information minus the resource indicated by the first resource allocation information, in the duration of the first resource allocation; and equal to the resource indicated by the second resource allocation information, outside the duration of the first resource allocation.
  • Figure 1 is a schematic representation of a communication system
  • Figure 2 illustrates how multi-slot scheduling can lead to a waste of time domain resources
  • Figure 3 illustrates how dynamic changes to a downlink/uplink assignment can lead to a waste of time domain resources
  • Figure 4A is a flow diagram of a method by which a communication network allocates resources to a user equipment
  • Figure 4B is a flow diagram of a method by which a user equipment identifies resources allocated to it by a communication network
  • Figure 5 illustrates an example of resource allocation when a single slot communication is punctured by a multi-slot communication
  • Figure 6 illustrates an example of resource allocation when a multi-slot communication is punctured by a multi-slot communication
  • Figure 7 illustrates an example of resource allocation when first and second communications have a different frequency allocation
  • Figure 8 illustrates another example of resource allocation when first and second communications have a different frequency allocation
  • Figure 9 illustrates an example of resource allocation when a single-slot communication is punctured by a multi-slot communication and a downlink/uplink assignment is changed.
  • the present disclosure provides methods and apparatuses for allocating resources more efficiently in a communication network.
  • a fifth generation (5G) cellular communication system e.g. a 5G New Radio (NR) system of the type currently being developed by the 3 rd Generation Partnership Project, 3GPP
  • 5G fifth generation
  • NR 5G New Radio
  • 3GPP 3 rd Generation Partnership Project
  • FIG. 1 is a schematic diagram of a communication system 1.
  • the communication system 1 comprises a communication network 2 (which may be referred to herein simply as a “network” ) and one or more user equipments (UE) 4a, 4b, 4c, 4d.
  • the network 2 comprises a base station (BS) 6 configured to communicate with a core network 8.
  • the base station 6 is configured to communicate with each user equipment 4 via a respective communication link (collectively indicated by reference numeral 10) .
  • Each communication link 10 enables data transfer between the network 2 and a respective user equipment 4, via the base station 6.
  • Data transfer from the network 2 to a user equipment 4 is referred to as downlink (DL) communication.
  • Data transfer from a user equipment 4 to the network 2 is referred to as uplink (UL) communication.
  • the communication links 10 are wireless, radio-based, communication links.
  • Each communication link 10 may comprise one or more communication channels, for example one or more physical channels, transport channels, and/or logical channels.
  • Figure 1 is a highly simplified diagram of a communication system 1.
  • the network 2 comprises many other components, including other base stations (not shown in Figure 1) in communication with the core network 8, where each of the other base stations is configured to communicate with other user equipments.
  • the other components of the network 2 are not described herein.
  • the base station 6 is a component of the network 2 that is responsible for radio transmission to, and reception from, one or more user equipments 4 over one or more communication links 10.
  • the base station 6 thereby enables communication between a user equipment 4 and one or more other components of the communication system 1.
  • the base station 6 may comprise a transceiver (not shown in Figure 1) configured to transmit radio signals to, and receive radio signals from, the one or more user equipments 4 over one or more communication links 10.
  • the base station 6 may comprise one or more processors (e.g. one or more hardware processors) (not shown in Figure 1) .
  • the one or more processors may be communicatively coupled to a memory (not shown in Figure 1) .
  • the memory may store processor-executable instructions that, when executed by the one or more processors, cause the methods disclosed herein to be performed (e.g. the method described with reference to Figure 4A) .
  • the base station 6 may comprise an integrated antenna, or it may be communicatively coupled to an external antenna over a wired connection to achieve communication over communication link 10.
  • the base station 6 may be connected to one or more further network elements, such as the core network 8, via a wireless and/or a wired connection.
  • the user equipments 4 can include any device that is able to communicate with the network 2 via a base station 6 and a communication link 10.
  • any of the user equipments 4a, 4b, 4c, 4d may be, or may be a component of, a mobile telephone (e.g. a smartphone) , a computer (e.g. a desktop, laptop or tablet computer) , a vehicle, a smart sensor or a connected appliance.
  • Each user equipment 4 may comprise a transceiver (not shown in Figure 1) configured to transmit radio signals to, and receive radio signals from, the base station 6 over one or more communication links 10.
  • Each user equipment 4 may comprise one or more processors (e.g. one or more hardware processors) (not shown in Figure 1) .
  • the one or more processors may be communicatively coupled to a memory (not shown in Figure 1) .
  • the memory may store processor-executable instructions that, when executed by the one or more processors, cause the methods disclosed herein to be performed (e.g. the method described with reference to Figure 4B) .
  • each user equipment 4 may comprise an antenna (not shown in Figure 1) .
  • base station and “user equipment” used herein should not be interpreted as limiting the scope of the present disclosure to any particular type of communication system.
  • a base station may be referred to as a “node” or a “NodeB” .
  • a base station In a 5G communication system, a base station may be referred to as a “gNodeB” .
  • the term “user equipment” does not imply that a user equipment is used by, or otherwise associated with, a particular user. Whilst some user equipments (e.g. smartphones) may indeed be used by one or more users, other user equipments (e.g. smart sensors) may be intended for machine-to-machine communications and may not be used by any users.
  • a user equipment may also be referred to as a “mobile device” or a “mobile station” .
  • an apparatus may comprise both user equipment functionality and base station functionality. Such an apparatus may have alternative operating modes, in which it is able to operate as either a base station or as a user equipment. Alternatively or additionally, such an apparatus may have simultaneous operating functionality, in which it can function as a user equipment 4 in communication with network 2, while at the same time providing base station 6 functionality for other user equipments in that network and/or another network.
  • base station and “user equipment” should be construed accordingly.
  • the base station 6 may have access to a range of frequencies that can be used to establish the communication links 10.
  • the finite range of frequencies available to the base station 6, and the finite amount of time it takes to transfer data across a communication link 10, means the base station 6 only has a finite amount of communication resources.
  • the finite amount of resources may be shared among the plurality of user equipments 4 using that base station 6 to access the network 2.
  • the resources may be used to transfer user plane data and control plane data between the base station 6 and the user equipments 4. In order for the base station 6 to provide an acceptable quality of service, it is desirable to optimise the allocation of communication resources to each user equipment 4.
  • One way in which a base station 6 may share resources between the plurality of user equipments 4 is to allocate a certain frequency range to a specific user equipment 4 for a specified time interval. During the specified time interval, the allocated frequency range is reserved for that specific user equipment 4.
  • downlink and uplink transmissions may be organised into frames.
  • a frame is a time interval used for data transmission over a communication link 10, and generally has a predefined duration. For example, a frame may have a duration of 10 milliseconds (ms) .
  • Each frame is divided into a number of subframes. For example, each frame may be divided into ten subframes.
  • Each subframe in a frame may have substantially the same duration. Thus, continuing the example, when a frame with a duration of 10 ms is divided into ten subframes, the duration of each subframe is 1 ms.
  • Each subframe comprises a plurality of slots. In a 5G network, the number of slots in a subframe may be determined by a subcarrier spacing configuration, ⁇ .
  • a subframe may comprise 1, 2, 4, 8 or 16 slots, for example, depending on the value of ⁇ .
  • Each frame may therefore comprise 10, 20, 40, 80 or 160 slots.
  • Each slot comprises a plurality of consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols.
  • the number of symbols in a slot may depend on a cyclic prefix used for OFDM. Purely for the sake of consistency, and without limitation, it will be assumed herein that each slot comprises 14 symbols. It will be appreciated that the present disclosure can also be applied for slots comprising other numbers of symbols.
  • the base station 6 may assign each time interval for downlink or uplink communications.
  • each OFDM symbol within a slot may be assigned for a downlink communication or an uplink communication.
  • the 5G communication system may also allow a symbol to be assigned as a flexible symbol.
  • the assignment of each symbol within a slot is determined by the base station 6, and signalled to the user equipments 4 over a communication link 10.
  • the assignment of the symbols in a slot may be signalled to the user equipments 4 using a Slot Format Indicator (SFI) .
  • SFI may comprise a numerical value that can be used as an index into a table that indicates, for each symbol of a slot, whether that symbol is assigned for use as a downlink symbol, an uplink symbol, or a flexible symbol.
  • the downlink/uplink assignment can be dynamically changed using SFIs.
  • the reader should take care not to confuse the “assignment” of time intervals for uplink or downlink communications (as described in this paragraph) with the “allocation” of resources to particular user equipments (as described in the following paragraph) .
  • the base station 6 allocates resources to each user equipment 4.
  • the resource allocation may comprise an allocation of a time interval, i.e. a time domain resource allocation.
  • the resource allocation may further comprise an allocation of a frequency or a frequency range, i.e. a frequency domain resource allocation.
  • the base station 6 can allocate, to a particular user equipment 4, one or more symbols that have been assigned for downlink communications.
  • the user equipment 4 can then receive downlink communications during the time intervals of the symbols that are allocated to that user equipment 4.
  • the base station 6 can allocate, to a particular user equipment 4, one or more symbols that have been assigned for uplink communications.
  • the user equipment 4 can then transmit uplink communications during the time intervals of the symbols that are allocated to that user equipment 4.
  • the allocation of resources is determined by the base station 6, and signalled to a user equipment 4 over a communication link 10.
  • the resource allocation may be signalled to a user equipment 4 using a Downlink Control Information (DCI) message.
  • DCI Downlink Control Information
  • a symbol is the basic unit of time domain resource allocation in a 5G communication system.
  • each symbol within a slot can be allocated to different user equipments 4 and/or a single slot can be used for both downlink and uplink communications.
  • symbol-level resource allocation can lead to increased signalling overhead. That is, allocating resources on a per symbol basis may cause DCI messages to consume a greater proportion of the available communication resources than is the case when resources are allocated on a per slot basis.
  • Multi-slot scheduling is described in more detail in 3GPP TS 38.214 ( “3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical layer procedures for data” ) . More specifically, 3GPP TS 38.214 defines a parameter (aggregationFactorDL) whose value indicates a number of consecutive downlink slots to which the same symbol allocation is applied. 3GPP TS 38.214 also defines a parameter (aggregationFactorUL) whose value indicates a number of consecutive uplink slots to which the same symbol allocation is applied.
  • FIG. 2 shows an example of resource allocation using multi-slot scheduling.
  • the downlink/uplink assignment 20 and resource allocation 22 are illustrated for four slots (referred to as Slot 0 to Slot 3, respectively) .
  • Each slot comprises fourteen symbols (referred to as Symbol 0 to Symbol 13, respectively) .
  • Symbols 0 to 10 are assigned to downlink communications.
  • Symbol 11 is assigned for use as a guard period (GP)
  • Symbols 12 to 13 are assigned to uplink (UL) communications.
  • a guard period may be used to provide a time separation between uplink and downlink communications, so as to avoid interference.
  • Symbols 0 to 8 are assigned to downlink communications
  • Symbol 9 is assigned for use as a guard period (GP)
  • Symbols 10 to 13 are assigned to uplink (UL) communications.
  • Symbols 4 to 8 in each of Slots 0 to 4 are allocated to a particular user equipment (e.g. user equipment 4a) for downlink communications, using multi-slot scheduling. For example, a single DCI message may be sent to the user equipment 4a, to allocate Symbols 4 to 8 of all slots to that user equipment 4a.
  • the first four symbols (i.e. Symbols 0 to 3) in Slot 0 are taken by other channels (e.g.
  • Time domain resources can also be wasted when a downlink/uplink assignment changes.
  • a downlink/uplink assignment can be dynamically changed by a base station 6 sending a different SFI to the user equipments 4 that it serves.
  • Figure 3 shows an example of resource allocation when a downlink/uplink assignment changes.
  • the downlink/uplink assignment is that indicated by reference numeral 30.
  • Symbols 4 to 8 are assigned to downlink (DL) communications
  • Symbol 11 is assigned for use as a guard period (GP)
  • Symbols 12 and 13 are assigned to uplink (UL) communications.
  • Symbols 0 to 3 Symbol 9 and Symbol 10 are “unknown” (e.g. they may be assigned as flexible symbols) .
  • the resource allocation at the first moment in time is indicated by reference numeral 32.
  • Symbols 4 to 8 are allocated by the base station 6 to a particular user equipment (e.g. user equipment 4a) for downlink communications.
  • the resource allocation 32 may, or may not, be achieved using multi-slot scheduling.
  • the downlink/uplink assignment is changed to that indicated by reference numeral 34.
  • Symbols 0 to 10 are assigned to downlink communications, whilst Symbol 11 remains assigned for use as a guard period, and Symbols 12 and 13 remain assigned to uplink communications.
  • the “unknown” region is changed to a downlink region, and the downlink region is expanded to Symbols 0 to 10.
  • resource allocation 32 remains unchanged, only Symbols 4 to 8 are allocated for downlink transmissions. This resource allocation leaves some symbols unused, resulting in a waste of time domain resources.
  • Symbols 0 to 3 and Symbols 9 to 11 are not allocated to any user equipment 4. Changes to a downlink/uplink assignment can thus lead to a sub-optimal usage of available time domain resources. This problem is compounded when multi-slot scheduling is used, because the use of multi-slot scheduling can allow the resource allocation 32 to remain unchanged following a change to a downlink/uplink assignment.
  • the base station 6 sends two messages containing respective resource allocation information to a user equipment 4.
  • the resource allocation information in the second message which is referred to herein as a “continuous resource allocation”
  • the continuous resource allocation indicates that the user equipment 4 has been allocated time domain resources (e.g. symbols) that are otherwise unused.
  • the continuous resource allocation does not explicitly indicate which time domain resources are allocated to the user equipment. Instead, when the user equipment 4 receives the continuous resource allocation, the user equipment 4 uses the content of both messages to identify the actual time domain resources have been allocated to it. In this manner, the wasting of time domain resources can be reduced or eliminated without substantially increasing signalling overhead.
  • Figure 4A is a flow diagram of a method, performed at base station 6, for allocating resources for communication between a user equipment 4 and the base station 6.
  • Figure 4B is a flow diagram of the corresponding method performed at the user equipment 4.
  • the method of Figure 4A begins at 102, in which the base station 6 transmits first resource allocation information to a user equipment 4 (e.g. user equipment 4a) .
  • the first resource allocation information allocates resources for a first data communication between the user equipment 4a and the base station 6.
  • the first data communication may be either a downlink communication or an uplink communication.
  • the first data communication may include user plane data or control plane data.
  • the first resource allocation information may allocate the resources for the first data communication in a common sub-period of each of a plurality of time periods.
  • the term “common” should be understood to mean that the resources are allocated in the same sub-period of each of the plurality of time period.
  • a sub-period is a portion of a period.
  • Each period may comprise a plurality of sub-periods, where each sub-period has the same duration.
  • the first resource allocation information may be a multi-slot scheduling allocation, which allocates resources in one or more common symbols of each of a plurality of slots.
  • the first resource allocation information may be included in a DCI message.
  • the first resource allocation information could be included in any other suitable type of signalling, depending on the capabilities of the communication system 1.
  • the first resource allocation information may optionally indicate frequency domain resources that are allocated for the first data communication between the user equipment 4a and the base station 6 in the common sub-period.
  • the first resource allocation information may indicate one or more subcarriers that are allocated to the user equipment 4a for downlink or uplink communication.
  • the base station 6 After the base station 6 has allocated resources for the first data communication, the base station 6 allocates resources for a second data communication between the user equipment 4a and the base station 6.
  • the second data communication may be either a downlink communication or an uplink communication.
  • the second data communication may include user plane data or control plane data.
  • the second data communication may include data that is unrelated to the data included in the first data communication.
  • the first and second data communications may each include data relating to different user plane applications.
  • the first data communication may include user plane data
  • the second data communication may include control plane data.
  • the base station 6 may allocate resources for the second data communication before, after, or at substantially the same time as it transmits the first resource allocation information to a user equipment 4.
  • the base station 6 allocates time domain resources. More specifically, at 104, the base station 6 identifies one or more further sub-periods of at least one of the plurality of time periods in which resources are available to be allocated for the second data communication between the user equipment 4a and the base station 6. For example, the base station 6 may identify one or more unallocated symbols within the plurality of slots that were allocated by the multi-slot scheduling allocation.
  • Operation 104 may include the base station 6 determining whether to allocate the unallocated symbols for the second data communication. For example, the base station 6 may determine whether the unallocated symbols are adjacent in time to (i.e. consecutive to) symbols that were allocated by the multi-slot scheduling allocation. The base station 6 may choose to allocate the unallocated symbols for the second data communication when they are adjacent to symbols that were allocated by the multi-slot scheduling allocation. The allocation of adjacent symbols can be communicated to the user equipment 4a with less signalling overhead than non-adjacent symbols (e.g., by a single continuous resource allocation, rather than multiple messages, as explained in more detail below) .
  • the base station 6 may optionally determine whether the second data communication is compatible with the current downlink/uplink assignment based upon whether the second data communication is a downlink or an uplink communication. The base station 6 may choose to allocate the unallocated symbols for the second data communication when it is compatible with the current downlink/uplink assignment, since this can avoid the signalling overhead associated with sending a SFI to change the downlink/uplink assignment.
  • the base station 6 may also allocate frequency domain resources. Operation 104 may optionally include the base station 6 identifying one or more frequency domain resources that are available to be allocated for the second data communication between the user equipment 4a and the base station 6. For example, the base station 6 may identify one or more unallocated subcarriers within the plurality of slots that were allocated by the multi-slot scheduling allocation. The base station 6 may choose to allocate the unallocated subcarriers for the second data communication when they are identical to one or more subcarriers that were indicated in the first resource allocation information. Identical subcarriers can be allocated by a shorter message than different subcarriers, thereby reducing signalling overhead.
  • the base station 6 may choose to allocate the unallocated subcarriers for the second data communication when they wholly or partially overlap one or more subcarriers that were indicated in the first resource allocation information. Alternatively, the base station 6 may choose to allocate carriers for the second data communication that are completely different from those indicated in the first resource allocation information, if doing so would avoid those carriers being wasted.
  • the base station 6 transmits second resource allocation information to the user equipment 4a.
  • the second resource allocation information is referred to herein as a “continuous resource allocation” .
  • the continuous resource allocation indicates that the user equipment 4a has been allocated one or more further sub-periods for the second data communication.
  • the further sub-period allocated for the second data communication is that identified by the base station 6 at operation 104.
  • the further sub-period that is allocated for the second data communication may be one or more otherwise unallocated symbols within the plurality of slots that were allocated by the multi-slot scheduling allocation.
  • the continuous resource allocation may be communicated to the user equipment 4a in any suitable manner.
  • the continuous resource allocation information may be included in a DCI message.
  • any of DCI message formats 0_0, 0_1, 1_0 and 1_1 may be used to indicate the continuous resource allocation.
  • the continuous resource allocation may be included in DCI formats 0_0 and/or 0_1, if uplink resources are being allocated to the user equipment 4a.
  • the continuous resource allocation may be included in DCI formats 1_0 and/or 1_1, if downlink resources are being allocated to the user equipment 4a.
  • the continuous resource allocation may be included in any other suitable type of signalling, depending on the capabilities of the communication system 1. For example, a new type of signalling message may be defined in order to accommodate the continuous resource allocation, or an existing signalling message format may be modified by adding one or more additional fields in which the continuous allocation can be included.
  • the continuous resource allocation may not explicitly indicate which further sub-period (s) have been allocated for the second data communication.
  • the continuous resource allocation may indicate one or more periods (e.g. slots) and/or a range of sub-periods (e.g. symbols) in which the user equipment 4a should identify otherwise unallocated sub-periods.
  • the continuous resource allocation may indicate a particular symbol of a particular slot, which defines the start of a range of symbols.
  • the continuous resource allocation may further indicate another symbol of the same slot or a different slot, which defines the end of the range of symbols.
  • the user equipment 4a can identify otherwise unallocated symbols within the range as thus defined.
  • the continuous resource allocation may include a flag, the receipt of which causes the user equipment 4a to identify otherwise unallocated sub-periods.
  • the amount of data included in the continuous resource allocation can be reduced, thereby reducing signalling overhead.
  • the continuous resource allocation may optionally indicate one or more frequency domain resources that are allocated for the second data communication between the user equipment 4a and the base station 6 in the further sub-period (s) .
  • the continuous resource allocation may indicate one or more subcarriers that are allocated to the user equipment 4a for downlink or uplink communication.
  • the base station 6 communicates with the user equipment 4a.
  • Operation 108 may include transmitting or receiving at least part of the data that constitutes the second data communication during the further sub-period.
  • Operation 108 may also include transmitting or receiving at least part of the data that constitutes the first data communication during the common sub-period.
  • the base station 6 can communicate the first data communication during the common symbols of each of the plurality of slots allocated by the multi-slot scheduling allocation and/or communicate the second data communication during the further symbols allocated by the continuous resource allocation.
  • the communication between the base station 6 and the user equipment 4a may be downlink or uplink communication.
  • Operation 108 may optionally include the base station 6 communicating with the user equipment 4a using one or more frequency domain resources that were indicated by the continuous resource allocation.
  • the base station 6 may communicate at least part of the data that constitutes the second data communication using one or more subcarriers indicated by the continuous resource allocation.
  • the method of Figure 4B begins at 202, in which a user equipment 4 (e.g. user equipment 4a) receives first resource allocation information from a base station 6. This is the first resource allocation information that was transmitted by the base station 6 at operation 102. As noted in relation to operation 102, the first resource allocation information allocates resources for a first data communication between the user equipment 4a and the base station 6.
  • the first resource allocation information may allocate resources for the first data communication in a common sub-period of each of a plurality of time periods.
  • the first resource allocation information may be a multi-slot scheduling allocation, which allocates resources in one or more common symbols of each of a plurality of slots.
  • the first resource allocation information may be included in a DCI message or any other suitable type of signalling.
  • the first resource allocation information may optionally indicate frequency domain resources that are allocated for the first data communication between the user equipment 4a and the base station 6 in the common sub-period.
  • the first resource allocation information may indicate one or more subcarriers that are allocated to the user equipment 4a for downlink or uplink communication.
  • the user equipment 4a receives second resource allocation information from the base station 6. This is the second resource allocation information that was transmitted by the base station 6 at operation 106, i.e. the continuous resource allocation.
  • the continuous resource allocation indicates that the user equipment 4a has been allocated resources for a second data communication between the user equipment 4a and the base station 6.
  • the continuous resource allocation indicates that resources for the second data communication have been allocated in a further sub-period of at least one of the plurality of time periods that were allocated at 202.
  • the continuous resource allocation may indicate that the user equipment 4a has been allocated one or more otherwise unallocated symbols within the plurality of slots that were allocated by the multi-slot scheduling allocation.
  • the continuous resource allocation may be included in a DCI message or any other suitable type of message.
  • the continuous resource allocation may optionally indicate one or more frequency domain resources that are allocated for the second data communication between the user equipment 4a and the base station 6 in the further sub-period (s) .
  • the continuous resource allocation may indicate one or more subcarriers that are allocated to the user equipment 4a for downlink or uplink communication.
  • the user equipment 4a identifies, based on the first and second resource allocation information, one or more further sub-periods of the at least one of the plurality of time periods as being allocated for the second data communication between the user equipment 4a and the base station 6. For example, the user equipment 4a may identify one or more additional symbols within the plurality of slots that were allocated by the multi-slot scheduling allocation.
  • the continuous resource allocation may not explicitly indicate which further sub-period (s) have been allocated to the user equipment 4a.
  • the user equipment 4a thus identifies which sub-periods have been allocated based on the first resource allocation information and the continuous resource allocation. For example, the user equipment 4a may infer that it has been allocated any sub-periods that are adjacent in time to the common sub-period and not otherwise allocated. More specifically, the user equipment 4a may infer that it has been allocated any symbols that are adjacent to symbols that were allocated by the multi-slot scheduling allocation, provided that those adjacent symbols are otherwise unallocated. In this manner, the user equipment 4a can identify which symbols have been allocated to it, without the signalling overhead that would be required to explicitly identify those symbols in a resource allocation message.
  • One way in which the user equipment 4a can identify which sub-periods have been allocated is to subtract the time domain resources allocated by the continuous resource allocation from the time domain resources allocated by the first resource allocation information. More specifically, the user equipment 4a can subtract the symbols allocated by a multi-slot scheduling allocation from the symbols allocated by a continuous resource allocation. In many cases, the result of the subtraction is to identify symbols that are adjacent in time to the symbols allocated by the multi-slot scheduling allocation and not otherwise allocated. Subtracting the allocated time domain resources in this manner provides a computationally simple way for the user equipment 4a to identify which symbols have been allocated.
  • the user equipment 4a may also take into account the current downlink/uplink assignment when identifying which sub-periods have been allocated. For example, the user equipment 4a may infer that it has been allocated any sub-periods that are adjacent in time to the common sub-period, not otherwise allocated, and whose downlink/uplink assignment is the same as that of the common sub-period. More specifically, the user equipment 4a may infer that it has been allocated any otherwise unallocated symbols that are adjacent to symbols that were allocated by the multi-slot scheduling allocation, provided that the downlink/uplink assignment of the otherwise unallocated symbols is the same as that of the symbols that were allocated by the multi-slot scheduling allocation. This can avoid interference, by avoiding the user equipment 4a and base station 6 transmitting simultaneously.
  • the continuous resource allocation may, or may not, explicitly indicate which frequency domain resources have been allocated for the second data communication.
  • Three exemplary schemes by which the frequency domain resource allocation can be identified using the continuous resource allocation will now be described.
  • the continuous resource allocation does not indicate any frequency domain resources.
  • the user equipment 4a can infer that the second data communication has been allocated identical frequency domain resources to those that were allocated for the first data communication.
  • the user equipment 4a may infer that it has been allocated the same subcarriers that were allocated by the multi-slot scheduling allocation. This can reduce signalling overhead, by avoiding the need for a continuous resource allocation to explicitly indicate which frequency domain resources have been allocated for the second data communication.
  • the first scheme is illustrated in Figures 5 and 6, which are discussed in more detail below.
  • the continuous resource allocation explicitly indicates which frequency domain resources have been allocated.
  • the user equipment 4a may use those frequency domain resources for the second data communication.
  • the continuous resource allocation can indicate specific frequency domain resources that have been allocated for the second data communication.
  • the continuous resource allocation can indicate specific subcarriers that have been allocated for the second data communication.
  • the subcarriers that are indicated by the continuous resource allocation may wholly or partially overlap the subcarriers that were allocated by the multi-slot scheduling allocation, or may be completely different from the subcarriers that were allocated by the multi-slot scheduling allocation.
  • the second scheme is illustrated in Figure 7, which is discussed in more detail below.
  • the continuous resource allocation may indicate frequency domain resources, but not explicitly indicate which frequency domain resources have been allocated.
  • the user equipment 4a may identify which frequency domain resources have been allocated for the second data communication based on the frequency domain resources indicated in the first resource allocation information and the second resource allocation information. For example, the user equipment 4a may identify which frequency domain resources have been allocated for the second data communication by subtracting the frequency domain resources indicated in the first resource allocation information from the frequency domain resources indicated in the second resource allocation information. More specifically, the user equipment 4a may subtract the subcarriers indicated in the multi-slot scheduling allocation from the subcarriers indicated in the continuous resource allocation information.
  • the user equipment 4a may use the frequency domain resources that have been identified in this manner to communicate the second data communication during the common sub-periods. During the further sub-periods, the user equipment 4a may use the frequency domain resources that are indicated in the continuous resource allocation for the second data communication.
  • the third scheme can be expressed as follows:
  • the third scheme allows a relatively complicated time domain and frequency domain resource allocation to be defined by a relatively simple continuous resource allocation message. In this manner, the waste of time domain and frequency domain resources can be reduced, without significantly increasing signalling overhead.
  • the third scheme is illustrated in Figure 8, which is discussed in more detail below.
  • the continuous resource allocation may contain information (e.g. a flag) to allow the user equipment 4a to determine which of the second or third schemes should be used to identify which frequency domain resources have been allocated.
  • the base station 6 may implement only one of the second and third schemes, such that there is no need for the user equipment to determine which scheme should be used.
  • the user equipment 4a communicates with the base station 6.
  • Operation 208 of Figure 4B corresponds to operation 108 of Figure 4A.
  • Operation 208 may include transmitting or receiving at least part of the data that constitutes the second data communication during the further sub-period.
  • Operation 208 may also include transmitting or receiving at least part of the data that constitutes the first data communication during the common sub-period.
  • the user equipment 4a can communicate the first data communication during the common symbols of each of the plurality of slots allocated by the multi-slot scheduling allocation and/or communicate the second data communication during the further symbols allocated by the continuous resource allocation.
  • the communication between the user equipment 4a and the base station 6 may be downlink or uplink communication.
  • Operation 208 may optionally include the user equipment 4a communicating with the base station 6 using one or more frequency domain resources that were indicated by the continuous resource allocation.
  • the user equipment 4a may communicate the second data communication using one or more subcarriers indicated by the continuous resource allocation.
  • the methods of Figures 4A and 4B can be used to allocate resources on any suitable communication channel.
  • the methods can be used to allocate resources on physical shared channels. More specifically, the methods can be used to allocate resources for downlink communications on the physical downlink shared channel (PDSCH) and/or to allocate resources for uplink communications on the physical uplink shared channel (PUSCH) .
  • the methods may be used to allocate resources on a sidelink channel, such as the physical sidelink shared channel (PSSCH) .
  • PSSCH physical sidelink shared channel
  • the applicability of the present disclosure is not limited solely to the aforementioned examples of channels.
  • FIGs 5 to 9 illustrate examples of how resources can be allocated in accordance with the present disclosure. These examples demonstrate how the methods described above in relation to Figures 4A and 4B can reduce or eliminate wasted resources. Although these examples all relate to downlink communications, it will be appreciated that the present disclosure is equally applicable to uplink communications.
  • Figure 5 illustrates an example of resource allocation when a single slot communication is punctured by a multi-slot communication. That is, in this example, the first data communication is a multi-slot communication, and the second data communication is a single slot communication. Following the downlink/uplink assignment and resource allocation for other channels, a resource for the first data communication is allocated to a user equipment 4a based on multi-slot scheduling.
  • the downlink/uplink assignment 20 is the same as that discussed above in relation to Figure 2.
  • the first resource allocation 22, which is used for the first data communication is also the same as that discussed above in relation to Figure 2. In each of the four slots, the same set of symbols (Symbols 4 to 8) is allocated for the first data communication.
  • a continuous resource allocation 50 is transmitted to the user equipment 4a.
  • the user equipment 4a thus receives, from the base station 6, second resource allocation information comprising the continuous resource allocation 50.
  • the continuous resource allocation 50 indicates Symbols 0 to 10 in Slot 2. That is, the continuous resource allocation 50 indicates that time domain resources for the second data communication have been allocated somewhere within Symbols 0 to 10 in Slot 2, but does not explicitly indicate which symbols have been allocated.
  • the user equipment 4a is aware that Symbols 4 to 8 in Slot 2 were already allocated for the first data communication by the first resource allocation 22.
  • the user equipment 4a can infer that the base station 6 allocated Symbols 0 to 3 and Symbols 9 to 10 of Slot 2 for the second data communication.
  • the user equipment 4a can subtract the time domain resources indicated by the first resource allocation 22 from the time domain resources indicated by the continuous resource allocation 50, to identify the time domain resources that have actually been allocated for the second data communication.
  • the user equipment 4a can thus identify the actual resources 52 that have been allocated for the first and second data communications.
  • Figure 5 demonstrates that the base station 6 can signal the allocation of two non-contiguous groups of symbols (i.e. a first group consisting of Symbols 0 to 3 of Slot 2, and a second group consisting of Symbols 9 to 10 of Slot 2) with just one signalling message.
  • the otherwise wasted time domain resources in those non-contiguous groups of symbols can thus be used, but without incurring the overhead of sending a separate signalling message for each group of symbols.
  • Figure 6 illustrates an example of resource allocation when a multi-slot communication is punctured by a multi-slot communication. That is, in this example, the first and second data communications are both multi-slot communications.
  • the downlink/uplink assignment 20 and the first resource allocation 22 are the same as those discussed above in relation to Figures 2 and 5.
  • the continuous resource allocation 60 indicates a continuous time domain resource beginning at Symbol 4 of Slot 0, and ending at Symbol 10 of Slot 2. That is, the continuous resource allocation 50 indicates that time domain resources for the second data communication have been allocated somewhere between Symbol 4 of Slot 0 and Symbol 10 of Slot 2, but does not explicitly indicate which symbols have been allocated.
  • the user equipment 4a is aware that Symbols 4 to 8 in Slots 0 to 2 were already allocated for the first data communication by the first resource allocation 22. Hence, the user equipment 4a can identify which time domain resources have been allocated for the second data communication by subtracting the time domain resources indicated by the first resource allocation 22 from the time domain resources indicated by the continuous resource allocation 50. More specifically, the user equipment can identify that Symbols 9 to 13 of Slot 0, Symbols 0 to 3 of Slot 1, Symbols 9 to 13 of Slot 1, Symbols 0 to 3 of Slot 2, and Symbols 9 to 10 of Slot 2 have been allocated to the second data communication. The user equipment 4a can thus identify the actual resources 62 that have been allocated for the first and second data communications.
  • Figure 6 demonstrates that the base station 6 can signal the allocation of multiple non-contiguous groups of symbols, each occupying different positions within different slots, with just one signalling message.
  • the wastage of time domain resources is significantly reduced with very little signalling overhead.
  • Figures 5 and 6 did not discuss how resources are allocated in the frequency domain.
  • the user equipment 4a can infer that the second data communication has been allocated identical frequency domain resources to those that were allocated for the first data communication.
  • Figures 7 and 8 illustrate examples in which different frequency domain resources allocated to the first and second data communications.
  • Figure 7 illustrates an extension of the example shown in Figure 5.
  • the downlink/uplink assignment (not shown) , and the first resource allocation 22 are the same as those discussed above in relation to Figures 2 and 5.
  • Figure 7 also shows the frequency domain resources allocated by the first resource allocation 22.
  • the first resource allocation 22 allocates frequencies in the range f 1 to f 3 for the first data communication.
  • f 1 and f 3 may be different subcarriers, and the range f 1 to f 3 may thus identify a number of subcarriers that are allocated for the first data communication.
  • the continuous resource allocation 70 indicates that time domain resources for the second data communication have been allocated somewhere within Symbols 0 to 10 in Slot 2, but does not explicitly indicate which symbols have been allocated.
  • the continuous resource allocation 70 also explicitly indicates that frequencies in the range f 2 to f 4 are allocated for the second data communication.
  • f 2 and f 4 may be different subcarriers, and the range f 2 to f 4 may thus identify a number of subcarriers that are allocated for the second data communication.
  • the range f 2 to f 4 partially overlaps the range f 1 to f 3 , but it will be appreciated that the ranges may wholly overlap (i.e. one range may be a subset of the other) , or the frequency ranges may not overlap at all.
  • the user equipment can identify that the base station 6 allocated Symbols 0 to 3 and Symbols 9 to 10 of Slot 2, and frequencies in the range f 2 to f 4 , for the second data communication.
  • the user equipment 4a can thus identify the actual resources 72 that have been allocated for the first and second data communications.
  • Figure 7 demonstrates how otherwise unused time domain and frequency domain resources can be allocated for the second data communication. The wastage of time domain and frequency domain resources can be reduced with very little signalling overhead.
  • Figure 8 illustrates another extension of the example shown in Figure 5.
  • the downlink/uplink assignment (not shown) , the first resource allocation 22, and the continuous resource allocation 70 are the same as those discussed above in relation to Figures 2, 5 and 7.
  • the user equipment 4a identifies the time domain resources and frequency domain resources using a different scheme from the example of Figure 7. Based on the first resource allocation 22 and the continuous resource allocation 70, the user equipment 4a can identify that the base station 6 allocated Symbols 0 to 3 and Symbols 9 to 10 of Slot 2, and frequencies in the range f 2 to f 4 , for the second data communication.
  • the user equipment 4a identifies that the base station also allocated Symbols 4 to 8 of Slot 2, and frequencies in the range f 3 to f 4 , for the second data communication.
  • the user equipment 4a can thus identify the actual resources 82 that have been allocated for the first and second data communications.
  • Figure 8 demonstrates how the utilisation of time domain and frequency domain resources can be further improved with respect to the example shown in Figure 7, without increasing signalling overhead.
  • Figure 9 illustrates an example of resource allocation when a single slot communication is punctured by a multi-slot communication, and the downlink/uplink assignment changes. That is, in this example, the first data communication is a multi-slot communication, and the second data communication is a single slot communication. Only one slot is shown for simplicity.
  • the downlink/uplink assignment 30 is the same as that discussed above in relation to Figure 3.
  • the first resource allocation 32 which is used for the first data communication, is also the same as that discussed above in relation to Figure 3.
  • the downlink/uplink assignment is changed to that indicated by reference numeral 34.
  • the downlink/uplink assignment 34 is the same as that discussed above in relation to Figure 3.
  • Symbols 0 to 10 are now available for downlink communications and may be allocated to the second data communication.
  • a continuous resource allocation 90 is transmitted to the user equipment 4a.
  • the continuous resource allocation 90 indicates Symbols 0 to 10.
  • the user equipment 4a can infer that the base station 6 allocated Symbols 0 to 3 and Symbols 9 to 10 for the second data communication. The user equipment 4a can thus identify the actual resources 92 that have been allocated for the first and second data communications.
  • Figure 9 demonstrates how the waste of time domain resources following a downlink/uplink assignment change can be avoided, whilst incurring very little signalling overhead.
  • the methods disclosed herein can be performed by apparatuses.
  • the method of Figure 4A can be implemented by a base station 6, and the method of Figure 4B can be implemented by a user equipment 4.
  • the methods of Figures 4A and 4B can be implemented by a communication system that comprises a base station 6 and a user equipment 4 configured to communicate with each other.
  • the methods disclosed herein can be performed by instructions stored on a processor-readable medium.
  • the processor-readable medium may be: a read-only memory (including a PROM, EPROM or EEPROM) ; random access memory; a flash memory; an electrical, electromagnetic or optical signal; a magnetic, optical or magneto-optical storage medium; one or more registers of a processor; or any other type of processor-readable medium.
  • the present disclosure can be implemented as control logic in hardware, firmware, software or any combination thereof.
  • the apparatuses disclosed herein may be implemented by dedicated hardware, such as one or more application-specific integrated circuits (ASICs) or appropriately connected discrete logic gates.
  • a suitable hardware description language can be used to implement the methods described herein with dedicated hardware.
  • the present disclosure provides a new approach to allocating unused time domain and frequency domain resources.
  • the present disclosure can enable the base station to simply indicate a resource with a continuous resource allocation.
  • the user equipment can then determine the actual resource that has been allocated.
  • the actual resource that is allocated is often non-contiguous, and a high signalling overhead could otherwise be incurred in indicating the resource to the equipment.
  • the approach described herein may fully utilise the resources available, without incurring a high signalling overhead.
  • the present disclosure can thus improve spectrum efficiency (i.e. improve the utilisation of the available time domain and frequency domain resources) , whilst also reducing the signalling overhead and complexity of a communication system.
  • functionality attributed to the base station 6 may be performed by other components of the communication network 2. That is, the functionality attributed to the base station 6 may be performed collectively by the base station 6 in cooperation with other components of the network 2 (e.g. the core network 8) , or may be performed solely by other components of the network 2.
  • the network 2 e.g. the core network 8

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé d'attribution de ressources en vue d'une communication entre un équipement (4) d'utilisateur et une station (6) de base, comprenant les étapes consistant à recevoir (202), au niveau de l'équipement d'utilisateur, des premières informations d'attribution de ressources qui attribuent des ressources à une première communication de données dans une sous-période commune de chaque période d'une pluralité de périodes. L'équipement d'utilisateur reçoit (204) des secondes informations d'attribution de ressources pour une seconde communication de données. D'après les premières et les secondes informations d'attribution de ressources, l'équipement d'utilisateur identifie (206) une autre sous-période d'au moins une période de la pluralité de périodes comme étant attribuée à la seconde communication de données.
PCT/CN2018/118714 2017-12-01 2018-11-30 Détermination de symboles de données dans un créneau pour transmission de données WO2019105477A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880047845.2A CN110945937B (zh) 2017-12-01 2018-11-30 用于数据传输时隙中数据符号的确定

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762593470P 2017-12-01 2017-12-01
US62/593,470 2017-12-01

Publications (1)

Publication Number Publication Date
WO2019105477A1 true WO2019105477A1 (fr) 2019-06-06

Family

ID=66665406

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/118714 WO2019105477A1 (fr) 2017-12-01 2018-11-30 Détermination de symboles de données dans un créneau pour transmission de données

Country Status (2)

Country Link
CN (1) CN110945937B (fr)
WO (1) WO2019105477A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114365578A (zh) * 2020-08-13 2022-04-15 北京小米移动软件有限公司 资源配置方法、装置、通信设备和存储介质

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022222079A1 (fr) * 2021-04-21 2022-10-27 Oppo广东移动通信有限公司 Procédé et dispositif de configuration de ressources, et support de stockage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130336234A1 (en) * 2011-11-07 2013-12-19 Nokia Corporation Medium Access Control Method
WO2014021058A2 (fr) * 2012-08-02 2014-02-06 Nec Corporation Signalisation d'allocation de ressource
US20140295832A1 (en) * 2013-03-26 2014-10-02 Lg Electronics Inc. Method and apparatus of performing a discovery procedure
CN106028454A (zh) * 2016-07-06 2016-10-12 珠海市魅族科技有限公司 资源分配指示方法及装置、基站

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101426267B (zh) * 2007-11-02 2013-11-06 中国移动通信集团公司 资源调度方法及其装置
WO2010143868A2 (fr) * 2009-06-08 2010-12-16 엘지전자 주식회사 Procédé et dispositif de transmission/réception d'un signal dans un système de communication sans fil
EP3163958B1 (fr) * 2014-07-25 2019-08-28 Huawei Technologies Co., Ltd. Dispositif et procédé de communication pour une affectation de ressources
WO2016070415A1 (fr) * 2014-11-07 2016-05-12 Mediatek Singapore Pte. Ltd. Procédés d'allocation de ressources
US20160360550A1 (en) * 2015-06-03 2016-12-08 Qualcomm Incorporated Low latency under time division duplex and flexible frequency division duplex
CN108541397B (zh) * 2015-12-31 2021-03-30 华为技术有限公司 一种终端、基站和数据传输的方法
CN107041003B (zh) * 2016-02-03 2020-04-10 电信科学技术研究院 一种上下行传输资源分配方法及装置
US10700836B2 (en) * 2016-03-11 2020-06-30 Futurewei Technologies, Inc. Multicarrier uplink data with single carrier uplink control
CN106941724B (zh) * 2017-05-09 2020-12-22 宇龙计算机通信科技(深圳)有限公司 数据处理方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130336234A1 (en) * 2011-11-07 2013-12-19 Nokia Corporation Medium Access Control Method
WO2014021058A2 (fr) * 2012-08-02 2014-02-06 Nec Corporation Signalisation d'allocation de ressource
US20140295832A1 (en) * 2013-03-26 2014-10-02 Lg Electronics Inc. Method and apparatus of performing a discovery procedure
CN106028454A (zh) * 2016-07-06 2016-10-12 珠海市魅族科技有限公司 资源分配指示方法及装置、基站

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114365578A (zh) * 2020-08-13 2022-04-15 北京小米移动软件有限公司 资源配置方法、装置、通信设备和存储介质
CN114365578B (zh) * 2020-08-13 2024-02-13 北京小米移动软件有限公司 资源配置方法、装置、通信设备和存储介质

Also Published As

Publication number Publication date
CN110945937B (zh) 2023-06-20
CN110945937A (zh) 2020-03-31

Similar Documents

Publication Publication Date Title
RU2752846C2 (ru) Способ и устройство обработки информации восходящей линии связи
US11729826B2 (en) Multiple starting and ending positions for scheduled or autonomous uplink transmission in unlicensed spectrum
US9894656B2 (en) Method and apparatus for transceiving data in a wireless communication system which supports a plurality of component carriers
US11411790B2 (en) Flexible radio resource allocation
US11089581B2 (en) Signaling downlink control information in a wireless communication network
US11343841B2 (en) Uplink resource scheduling in multiple time instances
EP2793520A1 (fr) Procédé et appareil de communications sans fil
US20110188428A1 (en) Base station apparatus and communication control method
EP3518451B1 (fr) Procédé de transmission de données, et dispositif
EP3372017B1 (fr) Dispositif de communication, équipement d'infrastructure, systèmes et procédés de communication
US20210084676A1 (en) Scheduling information transmission method and apparatus
CN113196853A (zh) 侧链资源分配
WO2019105477A1 (fr) Détermination de symboles de données dans un créneau pour transmission de données
EP3567961B1 (fr) Procédé d'indication, procédé de traitement et appareil

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18883688

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18883688

Country of ref document: EP

Kind code of ref document: A1