WO2017215642A1 - Procédé d'attribution de ressources, appareil de réseau et appareil terminal - Google Patents

Procédé d'attribution de ressources, appareil de réseau et appareil terminal Download PDF

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Publication number
WO2017215642A1
WO2017215642A1 PCT/CN2017/088542 CN2017088542W WO2017215642A1 WO 2017215642 A1 WO2017215642 A1 WO 2017215642A1 CN 2017088542 W CN2017088542 W CN 2017088542W WO 2017215642 A1 WO2017215642 A1 WO 2017215642A1
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WIPO (PCT)
Prior art keywords
resource
terminal device
uplink service
send
network device
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PCT/CN2017/088542
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English (en)
Chinese (zh)
Inventor
张屹
张弛
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华为技术有限公司
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Priority claimed from CN201610437227.1A external-priority patent/CN107295674B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2017215642A1 publication Critical patent/WO2017215642A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of wireless communications, and in particular, to a resource allocation method, a network device, and a terminal device.
  • the short transmission time interval (sTTI) uplink service requires that the time interval between the terminal device having the requirement to send the uplink service and the terminal device actually transmitting the uplink service is short, that is, the short transmission time interval uplink service Features low latency and high reliability. Therefore, the network device needs to allocate sufficient resources for the transmission of the uplink service in the short transmission time interval in time to meet the characteristics of low delay and high reliability of the uplink service in the short transmission time interval.
  • the specific time interval of the specific short transmission interval can be determined according to system requirements or standard definitions.
  • the network device allocates a resource for the terminal device to send the short transmission time interval uplink service, if the current resource is already occupied, or the current unoccupied resource is insufficient to support the terminal device to send the short transmission time interval uplink service, Then, the network device cannot allocate the resources for sending the short transmission time interval uplink service to the terminal device in time. As shown in FIG. 1 , when the terminal device is allocated to the terminal device, the terminal device can send the short transmission time interval uplink service, so that the terminal device sends the short transmission time interval and the uplink service has a longer delay. It violates the low delay and high reliability of the uplink service in the short transmission interval.
  • the network device reserves bandwidth resources for service transmission for short transmission interval uplink services and other uplink services, respectively.
  • the network device reserves the bandwidth resource for the uplink service in the short transmission interval, which is easy to waste resources, and the reserved bandwidth resource is used. The utilization of the program resources is low.
  • An embodiment of the present application provides a resource allocation method, a network device, and a terminal device, where the network device allocates resources for the first terminal device to send the short-latency uplink service to the first terminal device in a timely manner.
  • the short transmission time interval (sTTI) service has the characteristics of short delay and high reliability.
  • the URLLC service also has a short delay (also called low time). Extended) and high reliability features.
  • the service with short delay and high reliability is collectively referred to as a short-latency service, which may be an sTTI service, a URLLC service, or a uMTC (Ultra-reliable Machine Type Communication).
  • the business can also be other types of services, which are not limited here.
  • non-short delay services services that do not have the characteristics of short delay and high reliability are collectively referred to as non-short delay services, which can It is considered that the non-sTTI service can also be an MBB service, and can also be other types of services, which are not limited herein.
  • the definition of specific short-delay and high-reliability characteristics can be defined in the requirements of the system or in the standard.
  • an embodiment of the present application provides a resource allocation method, including:
  • the network device notifies the first terminal device that the first terminal device sends the first resource of the uplink service, where the first resource includes the second resource that the network device has allocated to the at least one second terminal device, where the The second resource is used by the at least one second terminal device to send an uplink service;
  • the network device notifies the at least one second terminal device that the uplink service is not sent on the second resource.
  • the network device is configured to notify the first terminal device that the first terminal device sends the first resource of the uplink service, and the network device can allocate the resource for the first terminal device to send the uplink service to the first terminal device in time. Notifying that the at least one second terminal does not send the uplink service on the second resource by using the network device, and preventing the second terminal device from continuing to occupy the second resource, causing the second terminal device and the first terminal device to generate interference and conflict with each other, thereby implementing the first The terminal device and the second terminal device share resources to improve resource utilization.
  • the first resource is composed of at least one time domain resource unit.
  • the time domain resource unit includes one or a combination of the following: a symbol, a time slot, and a subframe.
  • the first resource is composed of at least one frequency domain resource unit.
  • the frequency domain resource unit includes one or a combination of the following: a subcarrier, a subcarrier group, a resource block, and a resource block group.
  • the method for the network device to notify the at least one second terminal device that the uplink service is not sent on the second resource includes:
  • the network device sends downlink control signaling to the at least one second terminal device, where the downlink control signaling is used to indicate that the at least one second terminal device does not send an uplink service on the second resource.
  • the uplink service sent by the first terminal device is a short-latency uplink service
  • the uplink service sent by the at least one second terminal device is a non-short-duration uplink service.
  • the network device can allocate the resources for the first terminal device to send the short-latency uplink service to the first terminal device in time, thereby ensuring the low delay and high reliability of the short-latency uplink service.
  • the first terminal device and the second terminal device are the same terminal device, or the first terminal device and the second terminal device are different terminal devices.
  • a resource allocation method provided by an embodiment of the present application includes:
  • the second resource is a resource that the network device has allocated to the second terminal device, and is used by the second terminal device to send an uplink service.
  • the second terminal device determines that the uplink service is not sent on the second resource.
  • the method for the second terminal device to receive, by the network device, the notification that the second terminal device does not send the uplink service on the second resource includes:
  • the second terminal device receives the downlink control signaling sent by the network device, where the downlink control signaling is used to indicate that the second terminal device does not send the uplink service on the second resource.
  • the method further includes: the second terminal device performs a discrete Fourier transform DFT on the modulated N modulation symbols to obtain N symbols, where N is an integer greater than or equal to 1; The second terminal device maps the M symbols of the N symbols obtained by the DFT to the third resource, where the third resource is used by the second terminal device to send an uplink service, where the third resource does not include the Said second resource.
  • the method further includes: the second terminal device performing a discrete Fourier transform DFT on the M modulation symbols of the modulated modulation symbols to obtain M symbols, where N is greater than An integer equal to 1, and M is an integer less than N; the second terminal device maps the M symbols obtained by the DFT to the third resource, where the third resource is used by the second terminal device to send an uplink service, The third resource does not include the second resource.
  • the second resource is not used to carry N-M symbols of the N symbols.
  • N-M symbols of the N symbols are not mapped.
  • N-M modulation symbols of the N modulation symbols are not DFT.
  • the second resource is composed of at least one time domain resource unit.
  • the time domain resource unit includes one or a combination of the following: a symbol, a time slot, and a subframe.
  • the second resource is composed of at least one frequency domain resource unit.
  • the frequency domain resource unit includes one or a combination of the following: a subcarrier, a subcarrier group, a resource block, and a resource block group.
  • the second resource is used by the first terminal device to send an uplink service.
  • the uplink service sent by the first terminal device is a short-latency uplink service
  • the uplink service sent by the second terminal device is a non-short-duration uplink service.
  • the first terminal device and the second terminal device are the same terminal device, or the first terminal device and the second terminal device are different terminal devices.
  • an embodiment of the present application provides a network device, where the network device has a function of implementing network device behavior in the foregoing method design.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • the network device includes a processing unit and a sending unit, where the processing unit is configured to send, by using the sending unit, the notification message involved in the foregoing method to the first terminal device and the second terminal device.
  • the transmitting unit is configured to communicate with a terminal device (including the first terminal device and the second terminal device).
  • the network device includes a processor and a transmitter, and the processor is configured to send, by using the transmitter, the notification message involved in the foregoing method to the first terminal device and the second terminal device.
  • the transmitter is arranged to support communication between the network device and a terminal device (the first terminal device and the second terminal device).
  • the network device can also include a memory for coupling with the processor that retains program instructions and data necessary for the terminal device.
  • an embodiment of the present application provides a terminal device, where the terminal device has a function of implementing a behavior of a terminal device in the foregoing method design.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • the terminal device includes a receiving unit and a processing unit, where the receiving unit is configured to receive a notification sent by the network device in the foregoing method, where the processing unit is configured to receive according to the receiving unit.
  • the notification determines that the terminal device does not send the uplink service on the second resource.
  • the structure of the terminal device includes a receiver and a processor, the receiver is configured to support communication between the terminal device and the network device, and the processor is configured to The notification received by the receiver determines that the terminal device does not send the uplink service on the second resource.
  • the terminal device may further include storage
  • the memory is for coupling with a processor, which stores program instructions and data necessary for the terminal device.
  • an embodiment of the present application provides an apparatus, where the apparatus includes: a memory, configured to store a program, and a processor, configured to execute a program stored in the memory, to perform the first aspect and the first aspect.
  • the apparatus includes: a memory, configured to store a program, and a processor, configured to execute a program stored in the memory, to perform the first aspect and the first aspect.
  • the device may be a chip, such as a chip that can be disposed in a network device, and the device may also be a network device.
  • an embodiment of the present application provides an apparatus, where the apparatus includes: a memory, configured to store a program, and a processor, configured to execute a program stored in the memory, to perform the second aspect and the second aspect.
  • the apparatus includes: a memory, configured to store a program, and a processor, configured to execute a program stored in the memory, to perform the second aspect and the second aspect.
  • the device may be a chip, such as a chip that can be disposed in the terminal device, and the device may also be a terminal device.
  • the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores an instruction, when it is running on a network device, causing the network device to perform the first aspect and the On the one hand, various possible methods in design.
  • the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores an instruction, when the terminal device runs on the terminal device, causing the terminal device to perform the second aspect and the Two possible ways of designing.
  • the second resource that has been allocated to the at least one second terminal device is preempted by the network device, and then allocated as the first resource to the first terminal device, where the first resource is used for the first terminal.
  • the device sends an uplink service, and the uplink service may be an uplink service with a short transmission interval.
  • the network device can allocate resources for the first terminal device to send the short-latency uplink service to the first terminal device in time, thereby ensuring short delay. Low latency and high reliability requirements.
  • the at least one second terminal does not send the uplink service on the second resource by using the network device, and preventing the second terminal device from continuing to occupy the second resource, causing the second terminal device and the first terminal device to generate interference and conflict with each other, thereby implementing the first terminal
  • the device and the second terminal device share resources to improve resource utilization.
  • FIG. 1 is a schematic diagram of a resource allocation method in the prior art.
  • FIG. 2 is a schematic diagram of a resource allocation method in the prior art.
  • FIG. 3 is a schematic diagram of a wireless communication scenario of a cellular network according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart diagram of a resource allocation method according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart diagram of a resource allocation method according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an example of a resource allocation method according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an example of a resource allocation method according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an example of a resource allocation method according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of mapping data of a resource allocation method according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of mapping data of a resource allocation method according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a second terminal device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a second terminal device according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application.
  • the technical solution provided by the embodiment of the present application is applicable to a wireless communication scenario of a cellular network, and the wireless communication scenario of the cellular network shown in FIG. 3 is taken as an example.
  • the scenario includes a network device and at least one terminal device connected to the network device, and the network device.
  • the air interface resource for service transmission is allocated to the terminal device.
  • the network device involved in the embodiment of the present application may be a network device, or an access point, or may refer to a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface.
  • the network device can be configured to convert the received air frame with an Internet Protocol (IP) packet as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network can include the Internet. Protocol (IP) network.
  • IP Internet Protocol
  • Network devices can also coordinate attribute management of air interfaces.
  • the network device may be a Global System for Mobile Communications (GSM) or a Code Division Multiple Access (CDMA) network device (BTS, Base Transceiver Station), or may be a bandwidth.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • the network device (NodeB) in the code division multiple access (WCDMA) may also be an evolved network device (evolutional Node B, eNB or e-NodeB) in LTE, or may be
  • the base station in the future network such as the base station in the 4.5G or 5G, is not limited in the embodiment of the present application.
  • the terminal device involved in the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the wireless terminal device can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal device, such as a mobile phone (or "cellular" phone) and has a mobile
  • RAN Radio Access Network
  • the computers of the terminal devices for example, may be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • the wireless terminal device may also be referred to as a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, and an Access Point. , Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • the terminal device includes a first terminal device and a second terminal device.
  • the network device allocates resources for the first terminal device to send the uplink service
  • the network device preferably has the current resources. If the resource is not occupied, or the current unoccupied resource is insufficient to support the first terminal device to send the uplink service, the network device can be configured to allocate the uplink service to the first terminal device in time according to the technical solution provided by the embodiment of the present application. Resources.
  • the network device may allocate the resource for the terminal device to send the uplink service by using the resource allocation technology in the prior art.
  • the network device uses the manner of “preempting” the resources of the second terminal device, and allocates resources for the first terminal device to send the uplink service to the first terminal device. That is, the network device may allocate the second resource that has been allocated to the second terminal device as the first resource to the first terminal device, where the first resource is used by the first terminal device to send the uplink service, where the second terminal device may be one or Multiple, the second resource is used by the second terminal device to send an uplink service.
  • the uplink service sent by the first terminal device may be a short-latency service, such as a short-time interval uplink service or an ultra-reliable and low-latency communication (URLLC) service.
  • a short-latency service such as a short-time interval uplink service or an ultra-reliable and low-latency communication (URLLC) service.
  • URLLC ultra-reliable and low-latency communication
  • the delay and reliability requirements of the uplink service sent by the second terminal device may be lower, and the uplink service sent by the second terminal device is a non-short delay service, such as may be short
  • the non-transmission time interval (sTTI) uplink service may also be a mobile broadband (MBB) service.
  • MBB mobile broadband
  • the International Telecommunication Union defines three types of services in terms of 5G expectations and requirements: Enhanced Mobile Broadband (eMBB) communication services, URLLc services and Massive Machines. Type Communications, mMTC).
  • eMBB Enhanced Mobile Broadband
  • URLLc Massive Machines. Type Communications
  • mMTC Massive Machines. Type Communications
  • the delay expected by the URLLc service is very short, and the minimum is only 1 ms. Therefore, for the transmission of the URLLc service data, resources need to be allocated immediately, and cannot wait.
  • the uMTC service also has high reliability requirements for data transmission, and generally requires an ultra-high reliability of 99.999%.
  • the network device needs to allocate the air interface resource for data transmission to the URLLc terminal device in time.
  • An embodiment of the present application provides a resource allocation method, a network device, and a wireless communication system, where the network device allocates resources for the first terminal device to send the short-latency uplink service to the first terminal device in a timely manner.
  • the resource allocation method, the network device, and the system are based on the same application concept. Since the resource allocation method, the network device, and the system solve the problem are similar, the implementation of the network device, the system, and the method can refer to each other, and the repetition is no longer Narration.
  • a resource allocation method provided by an embodiment of the present application includes:
  • the network device notifies the first terminal device, where the first terminal device sends the first resource of the uplink service, where the first resource includes a second resource that the network device has allocated to the at least one second terminal device, and the second resource is used for at least one
  • the second terminal device sends an uplink service
  • the network device allocates, for the first terminal device, the first resource for the first terminal device to send the uplink service, the uplink service sent by the first terminal device may be a short delay service, and the uplink service sent by the second terminal device is a non-short delay.
  • the service, wherein the uplink service may include an uplink service data signal and an uplink control signal.
  • the first terminal device and the second terminal device may be the same terminal device.
  • the uplink service of the first terminal device may include a short transmission time interval uplink service and a non-short transmission time interval uplink service; or, the first terminal device and the first terminal device
  • the two terminal devices are different terminal devices.
  • the uplink service of the first terminal device is different from the uplink service of the second terminal device.
  • the network device may receive a resource request message sent by the first terminal device, where the resource request message is used by the first terminal device to request the network device to allocate the first terminal device for The first terminal device sends the resource of the uplink service, and after receiving the resource request message sent by the first terminal device, the network device may allocate the resource for the first terminal device to send the uplink service, including performing S401.
  • the first resource is a resource allocated by the network device to the first terminal device, and the first resource is used by the first terminal device to send an uplink service.
  • the second resource is a resource that is allocated to the first terminal device by the network device, and the second resource is not used to carry the uplink service of the second terminal device, that is, the second terminal device further The uplink service is not sent on the second resource, and the second terminal device may be one terminal device or multiple terminal devices.
  • the first resource may be all resources or partial resources used by the first terminal device to send uplink services.
  • the first resource is used for the first terminal device to send all the resources of the uplink service, and the resources for the first terminal device to send the uplink service are all from the second resource of the second terminal, that is, the first terminal device sends the uplink.
  • the resources of the business all come from "preemption.”
  • the first resource is a part of the resource used by the first terminal device to send the uplink service, and a part of the resource used by the first terminal device to send the uplink service is the second resource from the second terminal, and is used by the first terminal device.
  • the other resources of the resources that are sent by the uplink service, except for the first resource, may be the idle resources that are not currently occupied.
  • the network device may allocate the idle resources that are not currently occupied by using the prior art. First terminal device.
  • the second resource refers to a resource that is allocated to the second terminal device by the network device, and the second resource may be all resources or some resources allocated by the network device to the second terminal device. .
  • the network device preempts all the resources allocated to the second terminal device and allocates the resources to the first terminal device.
  • the second resource is a part of resources allocated by the network device to the second terminal device
  • the second resource in the resource allocated by the network device to the second terminal device is preempted and then allocated to the first terminal device, and the network device is allocated to the first device.
  • the other resources of the resources of the second terminal device except the second resource may continue to be used for the second terminal device to perform uplink services.
  • the network device in the embodiment of the present application allocates the resources allocated to the uplink service of the non-short transmission time interval to the short transmission time interval uplink service.
  • the network device may reserve the resource reserved for the common data channel transmission by the second terminal device.
  • the second resource, the second selected device may reserve the second terminal device for carrying a Demodulation Reference Signal (DMRS), or a Sounding Reference Signal (SRS), or an uplink control signal,
  • DMRS Demodulation Reference Signal
  • SRS Sounding Reference Signal
  • the resource of the random access signal is selected as the second resource, and the network device preempts the selected second resource and allocates the second resource to the first terminal device.
  • the delay and reliability requirements of the non-short transmission interval uplink service sent by the second terminal device may be lower.
  • the priority and the reliability requirement of different terminal devices may be identified by the priority level. For example, the priority of the first terminal device is higher than the second terminal device, indicating that the first terminal device sends The delay and reliability requirements of the uplink service are higher than the delay and reliability requirements of the first terminal device.
  • the first resource allocated by the network device to the first terminal device may be composed of at least one time domain resource unit, and each time domain resource unit may carry certain information.
  • the time domain resource unit may include one or a combination of the following: a symbol, a time slot, and a subframe.
  • the time domain resource unit herein may not only be various types of time intervals defined in LTE, but also may be a time interval defined in the future 5G (ie, New Radio Access Technology, NR for short). .
  • the first resource allocated by the network device to the first terminal device may also be composed of at least one frequency domain resource unit, where each frequency domain resource unit may carry certain information.
  • the frequency domain resource unit may include one or a combination of: a subcarrier, a subcarrier group, a resource block (RB), and a resource block group.
  • the first terminal device may send the uplink service on the first resource.
  • the network device notifies the at least one second terminal device that the uplink service is not sent on the second resource.
  • the foregoing second resource may be used by another terminal device to send an uplink service.
  • the foregoing second resource may be used by the first terminal device to send an uplink service.
  • the network device after the network device preempts the second resource allocated to the at least one second terminal device, the network device is allocated as the first resource to the first terminal device, and the network device needs to notify the at least one second terminal device that the second resource is not on the second resource.
  • Sending the uplink service so that the at least one second terminal device does not send the second resource after receiving the notification sent by the network device to indicate that the at least one second terminal device does not send the uplink service on the second resource
  • the uplink service is used to ensure that the at least one second terminal device no longer occupies the second resource, and the second terminal device is prevented from occupying the second resource, so that the second terminal device and the first terminal device generate mutual interference and conflict.
  • the uplink service sent by the first terminal may be a short-latency uplink service
  • the uplink service sent by the second terminal device is a non-short-duration uplink service.
  • the first terminal device and the second terminal device may be the same terminal device, or the first terminal device and the second terminal device may be different terminal devices.
  • the network device may send downlink control signaling to the at least one second terminal device, where the downlink control signaling is used to indicate that the at least one second terminal device does not send the uplink service on the second resource.
  • the downlink control signaling may be indication information belonging to different levels, for example, the level indication information may be cell-specific indication information or a user-level (UE-specific) indication.
  • the second terminal device may perform a blind check in the search space corresponding to the level according to the level to which the indication information belongs to receive the indication information.
  • the notification sent by the network device to the terminal device may be on a physical downlink control channel (PDCCH) of the subframe, where the subframe It may be a subframe in which the first resource allocated to the first terminal device is located, or may be a subframe before the subframe in which the first resource is located.
  • PDCCH physical downlink control channel
  • a resource allocation method provided by an embodiment of the present application includes:
  • the second terminal device receives, by the network device, a notification that the second terminal device does not send the uplink service on the second resource.
  • the second resource is a resource that the network device has allocated to the second terminal device, and is used by the second terminal device to send the uplink service.
  • the second terminal device determines that the uplink service is not sent on the second resource.
  • the content of the method embodiment on the second terminal device side can be referred to the content of the method embodiment on the network device side, and details are not described herein again.
  • FIG. 6 is a schematic diagram of resources occupied by at least one second terminal device, each grid represents a resource unit, and each grid may represent a symbol, or a time slot, or a sub-portion in the time domain.
  • a frame each of which may represent one subcarrier or one resource block in the frequency domain.
  • the second resource of the at least one second terminal device preempted by the network device is composed of a time domain resource unit. As shown in FIG. 7, the network device uses the time domain resource of the fifth column of the lattice occupied by the at least one second terminal device. The time domain resource of the 12th column of the grid is selected as the second resource, and the network device allocates the second resource to the first terminal device, where the second resource The source is the first resource allocated by the network device to the first terminal device.
  • the second resource of the at least one second terminal device that is preempted by the network device is composed of a frequency domain resource unit. As shown in FIG. 8 , the network device uses the frequency domain resource of the fifth row of cells occupied by the at least one second terminal device. The frequency domain resource of the 10th row of the grid is selected as the second resource, and the network device allocates the second resource to the first terminal device, where the second resource is the first resource allocated by the network device to the first terminal device.
  • the second resource that has been allocated to the at least one second terminal device is preempted by the network device and then allocated as the first resource to the first terminal device, so that the network device can be the first in time.
  • the terminal device allocates resources for the first terminal to send the uplink service of the short transmission interval, thereby ensuring the low delay and high reliability of the uplink service in the short transmission interval. Notifying that the at least one second terminal does not perform data transmission on the second resource by using the network device, and preventing the second terminal device from continuing to occupy the second resource, causing the second terminal device and the first terminal device to generate interference and conflict with each other, thereby implementing the first terminal
  • the device and the second terminal device share resources to improve resource utilization.
  • the second terminal device may perform discrete Fourier transform on the modulated modulation symbol (Discrete Fourier) Transform, DFT), and then map the symbols obtained by the DFT to the third resource that is not occupied.
  • DFT discrete Fourier transform
  • the second terminal device may perform DFT on the modulated N modulation symbols to obtain N symbols, and then map the M symbols of the N symbols obtained by the DFT to the third resource, where N is an integer greater than or equal to 1, and M is an integer less than N (M may be 0). And for the other NM symbols of the N symbols obtained by the DFT, the second terminal device may not map the NM symbols to the third resource, where the third resource is a resource used by the second terminal to send the uplink service, where The three resources do not include the second resource that is occupied. It should be understood that the third resource herein may be all or part of resources except for the second resource that is originally allocated to the second terminal device. In addition, before mapping the M symbols obtained by the DFT to the third resource, the second terminal device may perform other processing on the symbols obtained by the DFT, for example, performing precoding processing, and then mapping the symbols obtained by the DFT to the third symbol. Resources.
  • the second terminal device may select after the DFT.
  • Data puncturing is performed, that is, the number of input points of the DFT is kept unchanged, and the symbols output by the DFT cannot be mapped to resources occupied by other terminal devices, such as time-frequency resources.
  • the second terminal device may encode, interleave, and modulate the uplink data to obtain a modulation symbol, and then perform DFT on all the modulation symbols to obtain a DFT-processed symbol, and then select a part. a symbol, and mapping the partial symbol to an unoccupied resource, and then performing an inverse discrete Fourier Transform (IDFT) on the symbol mapped to the unoccupied resource to send the uplink data to Internet equipment.
  • IDFT inverse discrete Fourier Transform
  • the partial symbol may be a symbol corresponding to the third resource, that is, the partial symbol is a symbol that is mapped to the third resource according to the mapping relationship between the symbol and the resource obtained by the DFT. That is to say, after the DFT, the terminal device may first determine a partial symbol corresponding to the third resource according to the mapping relationship between the symbol and the resource obtained by the DFT, and then map the partial symbol to the third resource.
  • the second terminal device can map the data to the third resource that is not occupied, by mapping the partial symbol obtained by the DFT to the resource that is not occupied by the other terminal device, so that the second resource is occupied by the other terminal device, thereby It is avoided that the transmission of the uplink data of the terminal device is affected because the second resource cannot map the data.
  • the M of the N modulation symbols obtained by the modulation may be first The modulation symbols are DFT, and M symbols are obtained, and then the M symbols obtained by the DFT are mapped to the third resource, where N is an integer greater than or equal to 1, and M is an integer less than N (M may be 0) .
  • the second terminal device may not perform DFT on the NM modulation symbols in the N modulation symbols, where the NM modulation symbols are corresponding to the first resource after the DFT is performed.
  • the modulation symbol, the third resource is a resource used by the second terminal to send an uplink service, and the third resource does not include the second resource that is occupied. That is, if the second resource is not occupied, then when the data is mapped, the symbols obtained by DFT the N-M modulation symbols are mapped to the second resource. It should be understood that before mapping the M symbols obtained by the DFT to the third resource, the DFT-derived symbols may be subjected to other processing, for example, performing pre-encoding processing, and then mapping the DFT-derived symbols to the third resource.
  • the second terminal device may select the DFT before the DFT.
  • Data puncturing is performed, that is, the number of input points of the DFT is changed, and the symbols output by the DFT cannot be mapped to resources occupied by other terminal devices, such as time-frequency resources.
  • the second terminal device may encode, interleave, and modulate the uplink data to obtain a modulation symbol, and then select a partial modulation symbol from all the modulation symbols to perform DFT, and obtain DFT processing. The symbol is then mapped to the unoccupied resource by the DFT-derived symbol. Next, the symbol mapped to the unoccupied resource is IDFTed to transmit the uplink data to the network device.
  • the partial modulation symbol may be a modulation symbol corresponding to the second resource, that is, the partial modulation symbol is a modulation symbol that is to be mapped to the second resource according to a mapping relationship between the modulation symbol and the resource. That is to say, before the DFT, the second terminal device may first determine a partial modulation symbol corresponding to the second resource according to the mapping relationship between the modulation symbol and the resource, and then perform DFT on the part of the modulation symbol, and map all the obtained symbols. Go to the second resource.
  • the foregoing second resource may be composed of at least one time domain resource unit, and each time domain resource unit may carry certain information.
  • the time domain resource unit may include one or a combination of the following: a symbol, a time slot, and a subframe.
  • the time domain resource unit herein may not only be various types of time intervals defined in LTE, but also may be a time interval defined in the future 5G (ie, New Radio Access Technology, NR for short). .
  • the foregoing second resource may also be composed of at least one frequency domain resource unit, where each frequency domain resource unit may carry certain information.
  • the frequency domain resource unit may include one or a combination of: a subcarrier, a subcarrier group, a resource block (RB), and a resource block group.
  • FIG. 11 is a network device according to an embodiment of the present disclosure.
  • the network device may adopt the method provided in the embodiment corresponding to FIG. 4 .
  • the network device 900 includes a processing unit 901 and a transmitting unit 902.
  • the processing unit 901 is configured to notify, by the sending unit 902, that the first terminal device is used by the first terminal device to send the first resource of the uplink service, where the first resource includes a second resource that the network device has allocated to the at least one second terminal device, where The second resource is used by the at least one second terminal device to send the uplink service; and the sending unit 902 notifies the at least one second terminal device that the uplink service is not sent on the second resource.
  • the first resource is composed of at least one time domain resource unit, or the first resource is configured by at least one frequency domain.
  • Source unit composition is
  • the time domain resource unit includes one or a combination of the following: a symbol, a time slot, and a subframe.
  • the frequency domain resource unit includes one or a combination of the following: a subcarrier, a subcarrier group, a resource block, and a resource block group.
  • the processing unit 901 is specifically configured to:
  • the processing unit 901 sends the downlink control signaling to the at least one second terminal device by using the sending unit 902, where the downlink control signaling is used to indicate that the at least one second terminal device does not send the uplink service on the second resource.
  • the uplink service sent by the first terminal device is a short-latency uplink service
  • the uplink service sent by the at least one second terminal device is a non-short-duration uplink service.
  • the first terminal device and the second terminal device are the same terminal device, or the first terminal device and the second terminal device are different terminal devices.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
  • the embodiment of the present application further provides a network device, which may adopt the method provided by the embodiment corresponding to FIG. 4, and may be the same device as the network device shown in FIG.
  • the network device 1000 includes a processor 1001, a transmitter 1002, a bus 1003, and a memory 1004, where:
  • the processor 1001, the transmitter 1002, and the memory 1004 are connected to each other through a bus 1003.
  • the bus 1003 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.
  • the processor 1001 in FIG. 12 corresponds to the processing unit 901 in FIG. 11, and the transmitter 1002 in FIG. 12 corresponds to the transmitting unit 902 in FIG.
  • the terminal device 1000 further includes a memory 1004 for storing programs and the like.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 1004 may include a random access memory (RAM), and may also include a non-volatile memory such as at least one disk storage.
  • the processor 1001 executes an application stored in the memory 1004 to implement the above resource allocation method.
  • FIG. 13 is a terminal device according to an embodiment of the present disclosure, and the terminal device may adopt the method provided by the embodiment corresponding to FIG. 5.
  • the terminal device 1100 includes a receiving unit 1101 and a processing unit 1102.
  • the receiving unit 1101 is configured to receive, by the network device, a notification for indicating that the terminal device does not send the uplink service on the second resource;
  • the second resource is a resource that the network device has allocated to the terminal device, and is used by the terminal device to send the uplink service.
  • the processing unit 1102 is configured to determine, according to the notification received by the receiving unit 1101, that the terminal device 1100 does not send an uplink service on the second resource.
  • the receiving unit 1101 is specifically configured to:
  • the processing unit 1102 is configured to perform DFT on the modulated N modulation symbols to obtain N symbols, where N is an integer greater than or equal to 1; mapping M symbols in the N symbols obtained by the DFT to And the third resource, where the third resource is used by the terminal device to send an uplink service, the third resource does not include the second resource, and M is an integer less than N.
  • the processing unit 1102 is configured to: perform DFT on the M modulation symbols of the N modulation symbols obtained by the modulation, to obtain M symbols, where N is an integer greater than or equal to 1, and M is an integer less than N;
  • the M symbols obtained by the DFT are mapped to the third resource, where the third resource is used by the terminal device to send an uplink service, and the third resource does not include the second resource.
  • the second resource is not used to carry N-M symbols in the N symbols.
  • N-M symbols of the N symbols are not mapped.
  • N-M modulation symbols of the N modulation symbols are not DFT.
  • the second resource is composed of at least one time domain resource unit, or the second resource is composed of at least one frequency domain resource unit.
  • the time domain resource unit includes one or a combination of the following: a symbol, a time slot, and a subframe.
  • the frequency domain resource unit includes one or a combination of the following: a subcarrier, a subcarrier group, a resource block, and a resource block group.
  • the uplink service sent by the terminal device 1100 is a non-short delay uplink service.
  • the embodiment of the present application further provides a terminal device, which may adopt the method provided by the embodiment corresponding to FIG. 5, and may be the same device as the terminal device shown in FIG.
  • the terminal device 1200 includes a receiver 1201 and a processor 1202, a bus 1203, and a memory 1204, where:
  • the receiver 1201 and the processor 1202 and the memory 1204 are connected to each other through a bus 1203; the bus 1203 may be a PCI bus or an EISA bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 14, but it does not mean that there is only one bus or one type of bus.
  • the receiver 1201 in FIG. 14 corresponds to the receiving unit 1101 in FIG. 13, and the processor 1202 in FIG. 14 corresponds to the processing unit 1102 in FIG.
  • the terminal device 1200 also includes a memory 1204 for storing programs and the like.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 1204 may include RAM and may also include non-volatile memory, such as at least one disk storage.
  • the processor 1202 executes the application stored in the memory 1204 to implement the resource allocation method as described above.
  • the wireless communication system 1300 includes: a network device 1301, a first terminal device 1302, and at least one second terminal device 1303. among them,
  • the network device 1301 is configured to notify the first terminal device 1302 that the first terminal device 1302 sends the first resource of the uplink service, where the first resource includes the second resource that the network device 1101 has allocated to the at least one second terminal device 1303.
  • the second resource is used by the at least one second terminal device 1303 to send an uplink service; and the at least one second terminal device 1303 is notified that the uplink service is not sent on the second resource;
  • the first terminal device 1302 is configured to receive, by the network device 1301, a notification for instructing the first terminal device 1302 to send the first resource of the uplink service;
  • the at least one second terminal device 1303 is configured to receive, by the network device 1301, a notification for indicating that the at least one second terminal device 1303 does not send the uplink service on the second resource.
  • the first terminal device 1302 is further configured to:
  • the uplink service is sent on the first resource according to the notification sent by the received network device 1301.
  • the at least one second terminal device 1303 is further configured to:
  • the uplink service is not sent on the second resource.
  • the uplink service sent by the first terminal device 1302 is a short-latency uplink service
  • the uplink service sent by the at least one second terminal device 1303 is a non-short-duration uplink service.
  • the first resource is composed of at least one time domain resource unit, or the first resource is composed of at least one frequency domain resource unit.
  • the time domain resource unit includes one or a combination of the following: a symbol, a time slot, and a subframe.
  • the frequency domain resource unit includes one or a combination of the following: a subcarrier, a subcarrier group, a resource block, and a resource block group.
  • the network device 1301 when the network device 1301 notifies the at least one second terminal device 1303 not to send the uplink service on the second resource, the network device 1301 is specifically configured to:
  • the downlink control signaling is sent to the at least one second terminal device 1303, and the downlink control signaling is used to indicate that the at least one second terminal device 1303 does not send the uplink service on the second resource.
  • the uplink service sent by the first terminal device 1302 is a short-latency uplink service
  • the uplink service sent by the at least one second terminal device 1103 is a non-short-duration uplink service.
  • the first terminal device 1302 and the second terminal device 1303 are the same terminal device, or the first terminal device 1302 and the second terminal device 1303 are different terminal devices.
  • the second resource that has been allocated to the at least one second terminal device is preempted by the network device and then allocated as the first resource to the first terminal device, so that the network device can be the first in time.
  • the terminal device allocates resources for the first terminal to send the uplink service of the short transmission interval, thereby ensuring the low delay and high reliability of the uplink service in the short transmission interval. Notifying that the at least one second terminal does not perform data transmission on the second resource by using the network device, and preventing the second terminal device from continuing to occupy the second resource, causing the second terminal device and the first terminal device to generate interference and conflict with each other, thereby implementing the first terminal
  • the device and the second terminal device share resources to improve resource utilization.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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

Abstract

L'invention porte sur un procédé d'attribution de ressources, un appareil de réseau et un appareil terminal afin de mettre en œuvre une attribution opportune d'une ressource pour un premier appareil terminal afin d'effectuer une transmission de liaison montante à faible latence à faible transmission. Le procédé comprend les étapes suivantes : un appareil de réseau notifie au premier appareil terminal une première ressource pour que le premier appareil terminal transmette un service de liaison montante, la première ressource comprenant une seconde ressource attribuée à au moins un second appareil terminal, et la seconde ressource est utilisée par ledit second appareil terminal afin de transmettre un service de liaison montante ; et l'appareil de réseau notifie ledit second appareil terminal de ne pas transmettre le service de liaison montante sur la seconde ressource. Dans l'invention, le mode de réalisation est utilisé afin de notifier ledit second appareil terminal de ne pas transmettre le service de liaison montante sur la seconde ressource, d'empêcher le second appareil terminal de continuer à occuper la seconde ressource et de provoquer une interférence et une contention entre le premier appareil terminal et ledit second appareil terminal, de réaliser un partage de ressources du premier appareil terminal et dudit second appareil terminal, et d'augmenter un taux d'utilisation des ressources.
PCT/CN2017/088542 2016-06-16 2017-06-16 Procédé d'attribution de ressources, appareil de réseau et appareil terminal WO2017215642A1 (fr)

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