WO2019127293A1 - Procédé et dispositif d'ordonnancement de ressources de spectre de fréquence - Google Patents

Procédé et dispositif d'ordonnancement de ressources de spectre de fréquence Download PDF

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Publication number
WO2019127293A1
WO2019127293A1 PCT/CN2017/119607 CN2017119607W WO2019127293A1 WO 2019127293 A1 WO2019127293 A1 WO 2019127293A1 CN 2017119607 W CN2017119607 W CN 2017119607W WO 2019127293 A1 WO2019127293 A1 WO 2019127293A1
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WO
WIPO (PCT)
Prior art keywords
group
user equipment
signal
signal system
conflict
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PCT/CN2017/119607
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English (en)
Chinese (zh)
Inventor
辛小枫
李鹏
梁尧
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海能达通信股份有限公司
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Priority to PCT/CN2017/119607 priority Critical patent/WO2019127293A1/fr
Publication of WO2019127293A1 publication Critical patent/WO2019127293A1/fr

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

Definitions

  • the present invention relates to the field of communications, and in particular, to a spectrum resource scheduling method and apparatus.
  • narrowband and broadband convergence has become the best choice in the industry.
  • a scenario in which a wideband signal and a narrowband signal are transmitted on adjacent spectrum resources occurs. Since the current mainstream narrowband signal system is not compatible with the wideband signal system, a large amount of interference will occur when the broadband signal and the narrowband signal spectrum resources are adjacent. How to reduce the interference between wide and narrow bands is an important issue for wide and narrow convergence.
  • the present invention proposes a spectrum resource scheduling method.
  • the spectrum resource scheduling method includes: determining whether there is a user equipment/group in which the signal system conflicts; if yes, performing resource scheduling in a conflict scenario, where the resource scheduling in the conflict scenario includes: a user equipment/group that is a signal system conflict
  • the group assigns corresponding beamforming parameters for spatial isolation.
  • the corresponding relationship between the control device setting the vehicle platform and the plurality of talk groups includes: the control device divides the vehicle platform into at least the main vehicle platform and the free vehicle platform, and sets the main in the case that the call states of all the talk groups are not called. There is a correspondence between the car platform and the talk group, and there is no correspondence between the free car platform and the talk group.
  • the control device dynamically adjusts the correspondence according to the call state change of the talk group, including: when the call state of the talk group is changed from being called to being called, if there is an idle free station that is not called, the control device will be called.
  • the other groups scanned by the original car are scanned by the idle free car; when the call status of the called group becomes uncalled, the control device hands over the other groups that are not called to the original station or is not called.
  • the initial main car is scanned, and when the original car is a free car and the initial main car is not called, the called group is handed over to the initial main car that is not called for scanning. There is a correspondence between the initial master station and the called talk group when the call states of all talk groups are not called.
  • the control device further divides a part of the vehicle platform into a pre-occupied vehicle platform, and the priority of the call group corresponding to the pre-occupied vehicle platform is higher than the communication group corresponding to the main vehicle platform.
  • the control device dynamically adjusts the correspondence according to the call state change of the talk group, including: when the call state of the high priority talk group is changed from being called to being called, determining whether there is an idle free station that is not called; if present , the control device sends the other high-priority talk groups scanned by the pre-occupied car station to the idle free car station for scanning, and if not, determines whether there is an idle main car station that is not called; if there is , the control device hands over the other high priority talk groups to the idle main car station for scanning. If not, selects a free car station to hang up the current call, and assigns other high priority talk groups to the selected free car station. Scan; when the call status of the high priority talk group becomes uncalled, the control device hands over the other high priority talk groups that are not called to the camping station for scanning.
  • the control device sets the correspondence between the vehicle platform and the plurality of talk groups, and the control device sets the correspondence between the vehicle platform and the talk group according to at least one of the importance, the priority, and the frequency of the call group.
  • the vehicle station communicates with the first digital trunking system through the talk group, and the control device is respectively connected to the vehicle platform and the second digital trunking system; further comprising: during the call of the talk group, the control device is in the corresponding vehicle platform and the second digital cluster Data is transferred between the systems to enable interconnection between the first digital trunking system and the second digital trunking system.
  • the present invention proposes a spectrum resource scheduling apparatus.
  • the spectrum resource scheduling apparatus includes a processor and a communication circuit, and the processor is coupled to the communication circuit, and the processor is configured to execute the instruction to implement the foregoing spectrum resource scheduling method.
  • the present invention proposes a readable storage medium.
  • the readable storage medium stores instructions that, when executed, implement the aforementioned spectrum resource scheduling method.
  • the beneficial effects of the present invention are: by using the beamforming technology, the beam of the user equipment/group service that is in conflict with the signal system is directed to the target user equipment/group, and the positions of different user equipments/groups are not necessarily the same due to conflicts.
  • the corresponding service beam does not necessarily have the same orientation. Pointing to different beams will cause signal interference attenuation, thereby reducing or even eliminating the use of the frequency protection band and improving spectrum utilization.
  • FIG. 1 is a schematic flowchart of a first embodiment of a spectrum resource scheduling method according to the present invention
  • FIG. 2 is a schematic diagram of spatial isolation in a first embodiment of a spectrum resource scheduling method according to the present invention
  • FIG. 3 is a schematic diagram of a mapping relationship between an interval between beams and interference attenuation in a first embodiment of a spectrum resource scheduling method according to the present invention
  • FIG. 4 is a schematic flowchart of a second embodiment of a spectrum resource scheduling method according to the present invention.
  • FIG. 5 is a schematic flowchart of a third embodiment of a spectrum resource scheduling method according to the present invention.
  • FIG. 6 is a schematic diagram of a PDT signal frequency point set in an LTE signal protection band in an example of a fourth embodiment of the spectrum resource scheduling method of the present invention
  • FIG. 7 is a schematic structural diagram of a first embodiment of a spectrum resource scheduling apparatus according to the present invention.
  • Figure 8 is a block diagram showing the first embodiment of the readable storage medium of the present invention.
  • the first embodiment of the spectrum resource scheduling method of the present invention includes:
  • S1 Determine whether there is a user equipment (UE)/group of the signal system conflict.
  • the execution body of this embodiment is a scheduler of spectrum resources, such as a base station.
  • the group includes several user equipments, which share the same time-frequency resources.
  • Signal system conflict refers to incompatibility between different signal formats, such as Long Term Evolution (LTE) signals and Police Digital Trunking (PDT) signals.
  • LTE Long Term Evolution
  • PTT Police Digital Trunking
  • the user equipment/group of the signal system conflict includes at least two user equipment/groups in which the signal systems are mutually incompatible.
  • the current resource to be scheduled needs to be allocated to the user equipment/group of the signal system conflict, for example, the user equipment/group using the LTE signal and the user equipment/group using the PDT signal, it indicates that the user equipment/group with the signal system conflict exists. Group, otherwise, indicates that there are no user equipment/groups with signal collisions.
  • Resource scheduling in a collision scenario may require interference between signals of user equipment/groups of different signal systems that are subject to collision.
  • the user equipment/group that conflicts with the signal system is assigned a corresponding beamforming parameter to use the beamforming technology to transmit and/or receive the user equipment in the signal system conflict in the subsequent signal transmission/reception process.
  • group of signals Beamforming is a signal preprocessing technique based on an antenna array. Beamforming produces a directional beam by adjusting the weighting coefficients of each element in the antenna array.
  • the beamforming technique is used to direct the beam of user equipment/group services that are in conflict with the signal system to their corresponding user equipment/group.
  • the service beam does not have to be fully targeted to its service target to achieve maximum gain, and other factors can be considered, such as minimizing interference.
  • the corresponding service beams are not necessarily aligned, and spatial isolation is achieved.
  • group C including user equipment C1, C2, C3
  • group D including user equipment D1, D2, D3
  • the signal formats used conflict with each other.
  • beam A serves user equipment A
  • beam B serves user equipment B
  • beam A and beam B have different directions
  • beam C serves group C
  • beam D serves group D, beam C. Different from the direction of beam D. Pointing to different beams can cause attenuation of signal interference. The larger the interval between the beams, the greater the interference attenuation.
  • the specific mapping relationship can be as shown in Figure 3.
  • the frequency protection band is not needed; if the interference attenuation caused by spatial isolation can not meet the need of suppressing interference, the required frequency protection band can also be reduced. Bandwidth, which increases spectrum utilization.
  • the second embodiment of the spectrum resource scheduling method of the present invention is based on the first embodiment of the spectrum resource scheduling method of the present invention, and S2 further includes:
  • S21 Calculate the interference attenuation of the spatial isolation according to the location information of the user equipment/group of the beamwidth and the signal system conflict.
  • the direction of the service beam can be confirmed according to the location information of the user equipment/group, thereby calculating the interval angle between different beams, and then calculating the interference attenuation of the spatial isolation by using the interval angle and the beam width.
  • the larger the beam width, the smaller the interference attenuation of the spatial isolation, and the mapping relationship between the separation angle and the interference attenuation can be referred to FIG. 3.
  • the location information of the user equipment/group may include its pitch angle and/or azimuth.
  • the location information of the group may be the location information of the whole group, or may be the user information of one of the user equipments. In an embodiment of the present invention, the location information of the group is the location information of the latest user equipment of another group in the group whose distance signal system conflicts. Still taking the group C and the group D in FIG. 2 as an example, the location information of the group C is the location information of the user equipment C2 therein, and the location information of the group C is the location information of the user equipment D2 therein.
  • the location information of the user equipment/group of the conflicting signal system may be obtained according to the received signal from the user equipment/group of the signal system conflict.
  • the location information of the user equipment/group of the conflicting signal system may be obtained according to the received signal from the user equipment/group of the signal system conflict.
  • S22 Determine whether the signal power after spatial isolation can meet the service requirement according to the interference attenuation of the spatial isolation, the current power of the user equipment/group of the conflicting signal system, and the service requirement.
  • P user is the current power of the user equipment/group of the signal system conflict
  • ⁇ I ij is the inter-signal interference power remaining after the interference suppression
  • Sir Need is the lowest signal-to-noise ratio that satisfies the service requirement (generally by the user equipment/group)
  • the service is currently used by the group.
  • the subscripts i and j are indexes of user equipments/groups of different standards.
  • the units of each parameter are logarithmically operated, for example, decibel milliwatts (dBm) or decibels ( dB), so the addition and subtraction are used in the calculation.
  • the current power of the user equipment/group of the signal system conflict can be obtained before performing this step.
  • shilling I ij is the current inter-signal interference power
  • the formula (2) can be established, it can be considered that the signals of the user equipment/group are completely uncorrelated, and the direct jump to the step S24 can be performed without using the frequency domain guard band; if the formula (2) is not established, the user can be considered The signals of the device/group are related, and the frequency domain guard band needs to be used, and the process proceeds to step S23 to calculate the bandwidth of the frequency domain guard band, that is, the frequency domain interval.
  • I ij may approximate the current power of another user equipment/group that the signal system conflicts. Still taking the user equipment A and the user equipment B in FIG. 2 as an example, if P user is the current power of user equipment A, then I ij is the current power of user equipment B, and vice versa.
  • f is the signal interference power calculation function and f -1 is the inverse function of the signal interference power calculation function.
  • S24 Allocating time-frequency resources to user equipment/groups in which the signal system conflicts.
  • the frequency domain interval should be allocated according to the frequency domain diversity in the frequency domain, that is, the frequency band with the frequency band interval in the frequency domain will be allocated to the user equipment/group of the signal system conflict. Group time-frequency resources are separated.
  • the time-frequency resources allocated in the frequency domain may be selected according to their bandwidth, that is, the frequency domain interval is from small to large. Arrange.
  • Subsequent communication with the user equipment/group can be performed using the allocated time-frequency resources.
  • the basic parameters required for user equipment scheduling are ( ⁇ , ⁇ , P user ), where ⁇ is the pitch angle, ⁇ is the azimuth, and P user is the current power.
  • Sir Need 0db.
  • the angle between the beams pointing to the two is 15 °
  • the interference attenuation of spatial isolation is 18db
  • the interference attenuation caused by the frequency protection band is minimum
  • the third embodiment of the spectrum resource scheduling method of the present invention is based on the second embodiment of the spectrum resource scheduling method of the present invention, and the basic parameters required for scheduling are obtained before resource scheduling.
  • This embodiment is a further extension of the second embodiment of the spectrum resource scheduling method of the present invention. Therefore, the same content as the second embodiment of the spectrum resource scheduling method of the present invention is not described herein.
  • This embodiment includes:
  • S31 Acquire a pitch angle of the user equipment/group according to the phase of the signal received on the antenna elements of different heights.
  • S32 Acquire an azimuth of the user equipment/group according to the phase of the signal received on the antenna elements of different azimuths.
  • the pitch and azimuth angles of the user equipment/group constitute its position information.
  • the three steps S31-S33 may be for all user equipments/groups to be scheduled, and the execution order of the three is only an indication, and the order may be executed or switched at the same time.
  • step S35 If not, the process goes to step S35; if it does, the process goes to step S36.
  • this step may also be performed first, and then the basic parameters of the user equipment/group of the signal system conflict, including the pitch angle, the azimuth, and the current power, are acquired.
  • S37 Calculate the interference attenuation of the spatial isolation according to the location information of the user equipment/group of the beamwidth and the signal system conflict.
  • S38 Determine whether the signal power after spatial isolation can meet the service requirement according to the interference attenuation of the spatial isolation, the current power of the user equipment/group of the signal system conflict, and the service requirement.
  • step S39 If yes, go to step S39; otherwise, go to step S40.
  • the time-frequency resources of the user equipment/group of the conflicting signal system are hierarchically arranged in the frequency domain according to the frequency domain interval from small to large.
  • User equipment/groups of at least one of at least one of the user equipment/groups in which the signal regime conflicts may be scheduled to different transmission time intervals, thereby separating the user equipment/group of the group of signal collisions in the time domain group.
  • the time-frequency resources allocated during the current transmission time interval after scheduling are less than or equal to the system bandwidth in the frequency domain. Specifically, the user equipment/groups in which the signal system conflicts may be separated in order from the largest to the smallest in the frequency domain interval.
  • the frequency domain interval between the user equipment 3 and the user equipment 4 is 10 kHz
  • the frequency domain interval between the user equipment 5 and the user equipment 6 is 200 kHz
  • no frequency is required between the user equipment 3/4 and the user equipment 5/6. Domain protection zone. If the user equipment 3-6 is scheduled at the same time, the time-frequency resources after the diversity arrangement exceeds the system bandwidth in the frequency domain, the user equipment 5 or 6 may be scheduled to be scheduled to other transmission time intervals, for example, the next transmission time interval.
  • the fourth embodiment of the spectrum resource scheduling method of the present invention is based on the first embodiment of the spectrum resource scheduling method of the present invention, and utilizes the protection of the wideband signal to perform wide-narrow fusion.
  • the collision signal system includes a wideband signal and a narrowband signal, and the bandwidth of the narrowband signal is generally much smaller than the bandwidth of the wideband signal. If the bandwidth of the narrowband signal is smaller than the bandwidth of the guardband of the wideband signal, the frequency of the conflicting narrowband signal can be set within the guardband of the wideband signal.
  • the bandwidth of the LTE guard band is 2M, and the bandwidth of the PDT signal is only 12.5 kHz.
  • the frequency of the PDT signal can be set in the LTE protection band. As shown in Figure 6, this further reduces spectrum occupancy.
  • the requirement of the frequency guard band is prioritized. Assuming that the bandwidth of the frequency guard band is greater than the bandwidth of the single-sided guard band of the wideband signal, the frequency of the narrowband signal should be set outside the wideband signal and its guard band.
  • the first embodiment of the spectrum resource scheduling apparatus of the present invention includes a processor 110 and a communication circuit 120, and the processor 110 is connected to the communication circuit 120.
  • the communication circuit 120 is configured to transmit and receive data, and is an interface for the spectrum resource scheduling device to communicate with other communication devices.
  • the processor 110 controls the operation of the spectrum resource scheduling apparatus, and the processor 110 may also be referred to as a CPU (Central Processing Unit).
  • Processor 110 may be an integrated circuit chip with signal processing capabilities.
  • the processor 110 can also be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, and discrete hardware components.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the processor 110 is configured to execute instructions to implement the method provided by any one of the first and fourth embodiments of the spectrum resource scheduling method of the present invention and a non-conflicting combination.
  • the spectrum resource scheduling apparatus in this embodiment may be a scheduling party of the spectrum resource, such as a base station, or may be a separate component that can be integrated therein, such as a baseband board.
  • a first embodiment of the readable storage medium of the present invention includes a memory 210 storing instructions that, when executed, implement any one of the first to fourth embodiments of the spectrum resource scheduling method of the present invention and any The method provided by the non-conflicting combination.
  • the memory 210 may include a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk, an optical disk, and the like.
  • ROM read-only memory
  • RAM random access memory
  • flash memory a hard disk
  • optical disk an optical disk
  • the disclosed method and apparatus may be implemented in other manners.
  • the device implementations described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations 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 present embodiment.
  • each functional unit in each embodiment of the present invention 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.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a 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 of the various embodiments of the present invention.
  • 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. .

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Abstract

L'invention concerne un procédé d'ordonnancement de ressources de spectre de fréquence, qui consiste à déterminer si un équipement/groupe d'utilisateur confronté à un conflit de formats de signal est présent; et, s'il est présent, à ordonnancer alors des ressources dans un scénario de conflit. L'ordonnancement de ressources dans un scénario de conflit consiste à attribuer des paramètres de formation de faisceau correspondants pour l'équipement/groupe d'utilisateur confronté à un conflit de formats de signal, de façon à réaliser une isolation spatiale. L'invention concerne en outre un dispositif d'ordonnancement de ressources de spectre de fréquence et un support de stockage lisible.
PCT/CN2017/119607 2017-12-28 2017-12-28 Procédé et dispositif d'ordonnancement de ressources de spectre de fréquence WO2019127293A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103036603A (zh) * 2011-10-09 2013-04-10 中兴通讯股份有限公司 智能天线波束赋形权值的处理方法及装置
CN103327500A (zh) * 2012-03-23 2013-09-25 华为技术有限公司 干扰抑制方法和装置
CN103840865A (zh) * 2012-11-22 2014-06-04 中国移动通信集团公司 一种支持多种网络制式的智能天线设备
US9560550B1 (en) * 2014-02-12 2017-01-31 Sprint Communications Company L.P. Mitigating interference using beamforming

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103036603A (zh) * 2011-10-09 2013-04-10 中兴通讯股份有限公司 智能天线波束赋形权值的处理方法及装置
CN103327500A (zh) * 2012-03-23 2013-09-25 华为技术有限公司 干扰抑制方法和装置
CN103840865A (zh) * 2012-11-22 2014-06-04 中国移动通信集团公司 一种支持多种网络制式的智能天线设备
US9560550B1 (en) * 2014-02-12 2017-01-31 Sprint Communications Company L.P. Mitigating interference using beamforming

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