WO2022166315A1 - Dispositif et procédé de partage de spectre, et support de stockage lisible par ordinateur - Google Patents

Dispositif et procédé de partage de spectre, et support de stockage lisible par ordinateur Download PDF

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Publication number
WO2022166315A1
WO2022166315A1 PCT/CN2021/132130 CN2021132130W WO2022166315A1 WO 2022166315 A1 WO2022166315 A1 WO 2022166315A1 CN 2021132130 W CN2021132130 W CN 2021132130W WO 2022166315 A1 WO2022166315 A1 WO 2022166315A1
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Prior art keywords
spectrum sharing
prb
lte
spectrum
frequency domain
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PCT/CN2021/132130
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English (en)
Chinese (zh)
Inventor
张志荣
谢伟良
鲁娜
陈建刚
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present disclosure relates to a spectrum sharing apparatus, a spectrum sharing method, and a storage medium. More particularly, the present disclosure relates to techniques for dynamically sharing spectrum resources in 4G/5G mobile communication networks.
  • DSS Dynamic Spectrum Sharing, dynamic spectrum sharing
  • 4G/5G dynamic spectrum sharing can be realized, so as to meet the respective traffic requirements of 4G/5G users on limited spectrum resources, and use the instantaneous dynamic sharing of spectrum to provide the best performance for 4G and 5G devices.
  • LTE Long Term Evolution, long term evolution
  • NR New Radio, new air interface, which can be used to refer to 5G networks
  • the LTE frequency domain of the operator is configured in the range of 0-20M, and the LTE PDCCH (Physical Downlink Control Channel, physical downlink control channel) is allocated with 2 OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols numbered "0, 1", followed by 2 OFDM symbols of LTE PDCCH, to assign numbers to NR PDCCH 1 OFDM symbol of "2".
  • the frequency domain range of NR PDCCH is less than or equal to 20M. Therefore, since the number of symbols of the NR PDCCH is only 1 and the bandwidth is limited, it is difficult to schedule a PDSCH (Physical Downlink Shared Channel) with a large bandwidth of 50M. shared channel).
  • PDSCH Physical Downlink Shared Channel
  • NR PDSCH in the NR exclusive frequency domain of 20M-50M, the symbol position of NR PDSCH is ahead of the symbol position of NR PDCCH and NR DMRS (Demodulation Reference Signal, demodulation reference signal). Therefore, it is inevitable to It will affect the demodulation performance of the NR terminal.
  • signals such as NR SSB (Synchronization Signal and PBCH block, synchronization signal block) and LTE CRS RE all exist in the frequency domain of 0-20M, so it is easy to occur.
  • solutions such as LTE puncturing, NR puncturing, or M subframes need to be adopted, which increases the technical complexity, while the performance and capacity of LTE and NR are seriously damaged.
  • An object of the present disclosure is to provide a spectrum sharing device, a spectrum sharing method and a storage medium that can reduce LTE and NR performance and capacity loss in 4G/5G spectrum resource sharing.
  • a spectrum sharing apparatus for sharing spectrum resources in a scenario where LTE (long term evolution) and NR (new air interface) are configured in a 1:1 configuration
  • the spectrum sharing apparatus includes a processing circuit
  • the processing circuit is configured to: perform initialization and parameter configuration, configure the NR control channel in the NR exclusive frequency domain; detect the occupied bandwidth of the NR physical resource block, that is, the NR PBR; On/off control is performed on a function switch for enabling/disabling the DSS, that is, the dynamic spectrum sharing function; and spectrum resource allocation is performed based on the on/off state of the function switch.
  • a spectrum sharing method for sharing spectrum resources in a scenario where LTE (long term evolution) and NR (new air interface) are configured at 1:1, wherein the spectrum sharing method includes the following steps: Perform initialization and parameter configuration, configure the NR control channel in the NR exclusive frequency domain; detect the occupied bandwidth of the NR physical resource block (NR PBR); The function switch of the dynamic spectrum sharing function performs on/off control; and based on the on/off state of the function switch, the allocation of spectrum resources is performed.
  • LTE long term evolution
  • NR new air interface
  • a computer-readable storage medium comprising executable instructions, which when executed by a computer, cause the computer to perform the above-described spectrum sharing method.
  • the present disclosure in 4G/5G spectrum resource sharing, it is possible to reduce LTE and NR performance and capacity loss when LTE and NR are configured in a 1:1 ratio.
  • the patented method is not only suitable for 50M DSS, but also for DSS larger than 50M, such as 55M, 60M, 80M, 100M and other DSS, and also suitable for less than 50M DSS, such as 30M, 35M, 40M, 45M and other DSS.
  • FIG. 1 is a diagram schematically illustrating spectrum resource allocation in a spectrum sharing apparatus 2000 according to an embodiment of the present disclosure
  • FIG. 2 is an exemplary configuration block diagram schematically showing a spectrum sharing apparatus 2000 of an embodiment of the present disclosure
  • FIG. 3 is a flowchart simply showing the outline of the spectrum sharing method executed in the spectrum sharing apparatus 2000 according to an embodiment of the present disclosure.
  • FIG. 4 is an exemplary flowchart illustrating in more detail the spectrum sharing processing procedure performed in the spectrum sharing apparatus 2000 of the embodiment of the present disclosure
  • FIG. 5 is a diagram schematically illustrating spectrum resource allocation by a spectrum sharing apparatus in the related art
  • FIG. 6 is a block diagram schematically illustrating an exemplary configuration of a computing device 300 implementing an embodiment of the present disclosure.
  • FIG. 1 is a diagram schematically illustrating spectrum resource allocation in a spectrum sharing apparatus 2000 according to an embodiment of the present disclosure.
  • Migrate key signals such as NR SSB/RMSI/OSI to the NR-exclusive 20M-50M frequency domain of 30M size, thereby effectively solving the problem of conflict with RE resources occupied by LTE CRS, and do ( LTE/NR) dynamic spectrum sharing.
  • the LTE dynamic spectrum sharing range is 0-20M
  • the NR static spectrum sharing (SSS, Static Spectrum Sharing) range is 30-50M, as shown in the dark dotted horizontal line and dark dotted arrow in the figure, not exceeding the black solid horizontal line ;
  • the NR dynamic spectrum sharing (DSS) range is 0-20M, as shown in the light-colored dashed horizontal line and light-colored dashed arrow in the figure.
  • the NR service calls down the NR spectrum resources by calling down from 50M to 20M (with a bandwidth of 30M).
  • the NR service does not exceed 30M, there is no need to use DSS, so the NR/LTE dynamic spectrum sharing DSS function is turned off, and NR/LTE does not have signal overlap or collision of control channels and service channels, and actually uses static spectrum. Shared SSS method.
  • the dynamic spectrum sharing DSS function is activated, and the NR PDSCH is extended from the upper 30M to the lower LTE 20M, and the NR PDSCH extended to the LTE 20M area passes the RE (Resource Element, resource element) level rate matching To avoid conflict with RE resources occupied by LTE CRS (Cell Reference Signal, cell reference signal).
  • RE Resource Element, resource element
  • CFI Control Format Indicator
  • the shared bandwidth size can also be 30M, 35M, 40M, 45M, 55M, 60M, 80M, 100M and so on.
  • FIG. 2 is an exemplary configuration block diagram schematically showing a spectrum sharing apparatus 2000 of an embodiment of the present disclosure.
  • the spectrum sharing apparatus 2000 may include a processing circuit 2010 .
  • the processing circuit 2010 of the spectrum sharing apparatus 2000 provides various functions of the spectrum sharing apparatus 2000 .
  • the processing circuit 2010 of the spectrum sharing apparatus 2000 may be configured to perform the spectrum sharing method in the spectrum sharing apparatus 2000 .
  • Processing circuitry 2010 may refer to various implementations of digital circuitry, analog circuitry, or mixed-signal (combination of analog and digital) circuitry that perform functions in a computing system.
  • Processing circuitry may include, for example, circuits such as integrated circuits (ICs), application specific integrated circuits (ASICs), portions or circuits of separate processor cores, entire processor cores, separate processors, such as field programmable gate arrays (FPGAs) programmable hardware devices, and/or systems including multiple processors.
  • ICs integrated circuits
  • ASICs application specific integrated circuits
  • FPGAs field programmable gate arrays
  • the processing circuit 2010 may include an initialization and parameter configuration unit 2020, an NR PRB (Physical Resource Block) detection unit 2030, a DSS function switch control unit 2040, and a DSS/SSS function execution unit 2050.
  • the initialization and parameter configuration unit 2020 is configured to execute step S1001 of FIG. 3 and steps S2001 and S2002 of the flowchart of FIG. 4 described later
  • the NR PRB detection unit 2030 is configured to execute steps S1002 and S2002 of FIG. 3 described later.
  • the DSS function switch control unit 2040 is configured to execute step S1003 in the flowchart of FIG. 3 described later and S2004 to S2005 and S2008 in FIG. 4
  • the DSS/SSS function execution unit 2050 is configured to Step S1004 in the flowchart of FIG. 3 and steps S2006 to S2007 and S2009 to S2010 in the flowchart of FIG. 4 are executed.
  • the spectrum sharing apparatus 2000 may further include a memory (not shown).
  • the memory of the spectrum sharing apparatus 2000 may store information generated by the processing circuit 2010 as well as programs and data for the operation of the spectrum sharing apparatus 2000 .
  • the memory may be volatile memory and/or non-volatile memory.
  • memory may include, but is not limited to, random access memory (RAM), dynamic random access memory (DRAM), static random access memory (SRAM), read only memory (ROM), and flash memory.
  • the spectrum sharing apparatus 2000 may be implemented at the chip level, or may also be implemented at the device level by including other external components.
  • each of the above-mentioned units may be implemented as independent physical entities, or may also be implemented by a single entity (eg, a processor (CPU or DSP, etc.), an integrated circuit, etc.).
  • FIG. 3 is an exemplary flowchart simply illustrating a spectrum sharing method performed in the spectrum sharing apparatus 2000 of some embodiments of the present disclosure.
  • the spectrum resource sharing of the present disclosure will be briefly described with reference to FIG. 3.
  • step S1001 in the initialization process, NR SSB/RMSI (Remaining minimum system information, remaining minimum system information)/OSI (Other System Information, other System messages) and other control channels are configured in 20M-50M, that is, the exclusive frequency domain of NR.
  • the LTE PDCCH is configured in the LTE frequency domain of 0-20M, and 2 to 3 OFDM symbols are allocated.
  • the occupancy of NR PRB resources is detected.
  • the NR PRB maximum occupied bandwidth is periodically detected every predetermined time, such as 1S, 10S, etc.
  • the maximum occupied bandwidth of the NR PRB may also be detected at a set time.
  • the maximum occupied bandwidth of the NR PRB may not be detected, but the average occupied bandwidth of the NR PRB may be detected.
  • step S1003 according to the detected occupancy of the NR PRB resources, the function switch for enabling/disabling the DSS function is controlled to be on/off.
  • the specific on/off control process will be described in detail later.
  • step S1004 based on the state (on/off) of the function switch, spectrum resource allocation (DSS/SSS) is performed accordingly.
  • DSS/SSS spectrum resource allocation
  • FIG. 4 is an exemplary flowchart illustrating in more detail a spectrum sharing method performed in the spectrum sharing apparatus 2000 of some embodiments of the present disclosure.
  • the initialization and parameter configuration unit 2020 performs initialization and parameter configuration. Specifically, in step S2001, the initialization and parameter configuration unit 2020 configures key signals such as NR SSB/RMSI/OSI that are prone to conflict with LTE CRS signals in the NR exclusive frequency domain with a bandwidth of 20M-50M, that is, 30M. Therefore, the problem of conflict with the RE resources occupied by the LTE CRS is effectively solved, and schemes such as LTE puncturing, NR puncturing, and M subframes are not required, thereby reducing the complexity of the 50M DSS technical scheme.
  • key signals such as NR SSB/RMSI/OSI that are prone to conflict with LTE CRS signals in the NR exclusive frequency domain with a bandwidth of 20M-50M, that is, 30M. Therefore, the problem of conflict with the RE resources occupied by the LTE CRS is effectively solved, and schemes such as LTE puncturing, NR puncturing, and M subframes are not required, thereby reducing the complexity of the 50M D
  • the initialization and parameter configuration unit 2020 configures the LTE PDCCH in the LTE frequency domain of 0-20M, and allocates OFDM symbols to it.
  • the OFDM symbols of the LTE PDCCH are increased from 2 to 3 (as shown by the light arrow in the lower left of Figure 1), thereby breaking the traditional scheme.
  • the limitation of only 2 OFDM symbols (as shown in Figure 5, the third symbol is allocated to the NR PDCCH in the related art) can improve the PDCCH capacity of LTE and increase the number of LTE users that can be scheduled.
  • the NR PRB detection unit 2030 detects, for example, the NR PRB occupied bandwidth every predetermined time, such as 1 second.
  • the physical resource module PRB is the physical resource allocation unit of the air interface, which is 12 consecutive carrier resources in the frequency domain, and is 180KHz in the case of a carrier interval of 15KHz.
  • the interval of 1 second is illustrated as the predetermined time, but the time interval for detecting the NR PRB can be appropriately set according to specific needs, for example, 10 seconds or the like.
  • the NR PRB resource occupancy detection may not be performed periodically at predetermined time intervals, but may be performed at a preset timing.
  • the NR PRB detection unit 2030 detects the maximum occupied bandwidth of the NR PRB. In some embodiments, in this step S2003, the NR PRB detection unit 2030 detects the average occupied bandwidth of the NR PRBs. Which type of occupied bandwidth is specifically detected can be set as required.
  • step S2006 the DSS/SSS function execution unit 2050 configures two OFDM symbols numbered "0, 1" for the NR PDCCH in the NR exclusive frequency domain (20M-50M).
  • step S2007 the DSS/SSS function execution unit 2050 performs SSS, ie static spectrum sharing, configures the NR PDSCH in the NR-exclusive frequency domain (20M-50M), and uses a downward call from 50M to 20M (bandwidth 30M). way to call NR spectrum resources.
  • SSS ie static spectrum sharing
  • the LTE control channel and traffic channel will not collide, so that the performance and capacity loss of LTE and NR can be effectively reduced.
  • step S2004 in the case where the occupied bandwidth of the NR PRB is greater than 30M, that is, greater than the exclusive bandwidth of the NR (in the case of "Yes" in step S2004), for the smooth development of the NR service, the NR PRB needs to be extended to the LTE frequency domain.
  • step S2009 the DSS/SSS function execution unit 2050 configures three OFDM symbols numbered 0-2 for the NR PDCCH in the NR exclusive frequency domain (20M-50M).
  • the capacity of the NR PDCCH can be increased, the number of NR schedulable users can be increased, and the CCE aggregation level can be improved, thereby improving the NR edge user experience.
  • the DSS/SSS function execution unit 2050 is configured to extend the NR PDSCH from the NR exclusive frequency domain of 20M-50M above to the 0-20M LTE frequency domain below, and is configured to extend to the 0-20M area of LTE.
  • NR PDSCH avoids collision with REs occupied by LTE CRS through RE-level rate matching.
  • the NR PDCCH is increased from 1 OFDM symbol to 2 by migrating key signals such as NR SSB/RMSI/OSI (which are prone to conflict with LTE CRS) to the NR exclusive area.
  • migrating key signals such as NR SSB/RMSI/OSI (which are prone to conflict with LTE CRS)
  • ⁇ 3 OFDM symbols, and the frequency domain is also increased from less than or equal to 20M to 30M, which can increase the PDCCH capacity of NR, increase the number of NR schedulable users, improve the CCE aggregation level, and improve the NR edge user experience.
  • the spectrum sharing apparatus 2000 does not need to adopt LTE/NR puncturing or M subframe scheme, through signal location migration such as NR SSB/RMSI/OSI, PDCCH capacity improvement and static and dynamic
  • the method of combining spectrum resource sharing technology effectively solves the LTE/NR conflict avoidance problem, reduces the performance and capacity loss of LTE and NR, and reduces the complexity of the technical solution for realizing LTE and NR conflict avoidance.
  • Network flexibility and resource utilization improve 4G/5G user experience, reduce DSS operation, maintenance and optimization costs, and help to rapidly promote the rapid development of 5G services and the surge of 5G SA users.
  • the spectrum sharing apparatus 2000 can also increase the number of OFDM symbols of the LTE PDCCH according to the detected size of the LTE PBR, thus, the PDCCH capacity of the LTE can be improved, and the LTE schedulable capacity can be increased.
  • the number of users can flexibly apply spectrum resources, thereby improving the resource utilization of the system.
  • FIG. 6 shows an exemplary configuration of a computing device 300 in which embodiments in accordance with the present disclosure may be implemented.
  • Computing device 300 is an example of a hardware device to which the above-described aspects of the present disclosure may be applied.
  • Computing device 300 may be any machine configured to perform processing and/or computation.
  • Computing device 300 may be, but is not limited to, a workstation, server, desktop computer, laptop computer, tablet computer, personal data assistant (PDA), smartphone, vehicle-mounted computer, or a combination of the above.
  • PDA personal data assistant
  • computing device 300 may include one or more elements that may connect or communicate with bus 302 via one or more interfaces.
  • the bus 302 may include, but is not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MCA) bus, an Enhanced ISA (EISA) bus, a Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus, etc.
  • Computing device 300 may include, for example, one or more processors 304 , one or more input devices 306 , and one or more output devices 308 .
  • the one or more processors 304 may be any kind of processors, and may include, but are not limited to, one or more general-purpose processors or special-purpose processors (such as special-purpose processing chips).
  • Each processor 304 may correspond to, for example, the processing circuit 2010 in FIG. 2 , and is configured to implement the functions of the spectrum sharing apparatus 2000 of the present disclosure.
  • Input device 306 may be any type of input device capable of inputting information to a computing device, and may include, but is not limited to, a mouse, keyboard, touch screen, microphone, and/or remote controller.
  • Output device 308 may be any type of device capable of presenting information, and may include, but is not limited to, displays, speakers, video/audio output terminals, vibrators, and/or printers.
  • Computing device 300 may also include or be connected to non-transitory storage device 314, which may be any storage device that is non-transitory and may enable data storage, and may include, but is not limited to, disk drives, optical storage device, solid state memory, floppy disk, flexible disk, hard disk, magnetic tape or any other magnetic medium, compact disk or any other optical medium, cache memory and/or any other memory chip or module, and/or from which a computer can read data , instructions and/or code in any other medium.
  • Computing device 300 may also include random access memory (RAM) 310 and read only memory (ROM) 312 .
  • RAM 310 may store programs, utilities or processes to be executed in a non-volatile manner.
  • RAM 310 may provide volatile data storage and store instructions related to the operation of computing device 300 .
  • Computing device 300 may also include a network/bus interface 316 coupled to data link 318 .
  • the network/bus interface 316 may be any kind of device or system capable of enabling communication with external devices and/or networks, and may include, but is not limited to, modems, network cards, infrared communication devices, wireless communication devices, and/or chipsets such as Bluetooth TM devices, 802.11 devices, WiFi devices, WiMax devices, cellular communication facilities, etc.).
  • the present disclosure is embodied as a system, apparatus, method, or computer-readable medium (eg, a non-transitory storage medium) as a computer program product. Accordingly, the present disclosure may be implemented in various forms, such as an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, microprogram code, etc.), or both software and hardware, where Hereinafter will be referred to as a "circuit", “module” or “system”. Furthermore, the present disclosure may also be embodied in any tangible media form as a computer program product having computer-usable program code stored thereon.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of program code, which comprises one or more executable instructions for implementing the specified logical function(s).
  • the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks illustrated in connection may, in fact, be executed concurrently, or in some cases may be executed in the reverse order illustrated, depending upon the functionality involved.
  • each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations can be implemented by special purpose hardware-based systems, or by combinations of special purpose hardware and computer instructions, to perform a specific function or operation.

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Abstract

La présente invention concerne un dispositif et un procédé de partage de spectre, et un support de stockage lisible par ordinateur. Le dispositif de partage de spectre comprend un circuit de traitement ; le circuit de traitement est configuré pour : effectuer une initialisation et une configuration de paramètres, et configurer un canal de commande NR dans un domaine de fréquence exclusif NR ; détecter un bloc de ressources physiques NR, c'est-à-dire la largeur de bande occupée de NR PBR ; sur la base de la largeur de bande occupée détectée de NR PBR, effectuer une commande d'activation/désactivation sur un commutateur fonctionnel utilisé pour activer/désactiver une fonction de partage de spectre dynamique (DSS) ; et exécuter une allocation de ressources de spectre sur la base d'un état d'activation/désactivation du commutateur fonctionnel. La présente invention s'applique aux DSS de 50 M, s'applique également aux DSS de 50 M ou plus, tels que les DSS de 55 M, 60 M, 80 M ou 100 M, et s'applique en outre aux DSS de 50 M ou moins, tels que les DSS de 30 M, 35 M, 40 M ou 45 M. Selon la présente invention, dans le partage des ressources spectrales 4G/5G, la perte de performance et de capacité de LTE et NR pendant une configuration 1:1 de LTE et NR peut être réduite.
PCT/CN2021/132130 2021-02-05 2021-11-22 Dispositif et procédé de partage de spectre, et support de stockage lisible par ordinateur Ceased WO2022166315A1 (fr)

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