WO2015032234A1 - Procédé, dispositif et système de détermination de puissance d'émission - Google Patents

Procédé, dispositif et système de détermination de puissance d'émission Download PDF

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Publication number
WO2015032234A1
WO2015032234A1 PCT/CN2014/079878 CN2014079878W WO2015032234A1 WO 2015032234 A1 WO2015032234 A1 WO 2015032234A1 CN 2014079878 W CN2014079878 W CN 2014079878W WO 2015032234 A1 WO2015032234 A1 WO 2015032234A1
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WO
WIPO (PCT)
Prior art keywords
wsd
spectrum
idle
primary user
list
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PCT/CN2014/079878
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English (en)
Chinese (zh)
Inventor
刘星
李岩
王斌
苗婷
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2015032234A1 publication Critical patent/WO2015032234A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • H04W52/58—Format of the TPC bits
    • 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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method, apparatus, and system for determining transmit power. Background technique
  • the DB is responsible for the protection of the primary system, that is, the operating parameters of the idle spectrum user equipment or the secondary system user equipment (WSD, White Space Device) are restricted according to the requirements of the primary system interference protection principle, thereby ensuring that the primary system is not interfered.
  • the problem described above is also called the co-existence problem between the primary and secondary systems; and because of the existence of multiple secondary systems, when borrowing the idle spectrum resources of the primary system, the database can only ensure that the interference of multiple secondary system user equipments is satisfied.
  • the primary and secondary systems coexist, but are not responsible for the spectrum allocation between the secondary systems and the problem of interference coexistence with each other.
  • SC Spectrum Coordinator
  • coexistence entity another logical entity, the SC (Spectrum Coordinator) or a coexistence entity, is introduced in the standard discussion.
  • the logic entity is used to solve the above-mentioned secondary system self-coexistence problem, that is, by limiting the secondary system.
  • the transmission parameters enable the coexistence of multiple secondary system user equipment.
  • the transmission power limit of WSD will be determined by both.
  • the determination of WSD usage parameters needs to be calculated twice by Geo-location DB and SC: calculation 1 , calculation 2;
  • the geographic location information database considers that the accumulated interference of multiple WSDs satisfies the primary user protection criterion, the maximum transmit power limit value of each WSD is given;
  • Computation 2 is the SC for further coordinated management of WSD (including coexistence, priority allocation, etc.), select part of WS in the WS list provided by DB, and adjust the transmission parameter limit of WS to meet the WSD coexistence requirement.
  • a new WS list is formed and sent to the WSD in the Run Parameter 2 message.
  • calculation 1 calculates the emission parameter limit for all WSs at the WSD position, but the SC will exclude some of the WS according to the coexistence and priority allocation principle, and calculate 1 for the transmission parameter limit calculation of this part of WS.
  • calculation 1 calculates the emission parameter limit for all WSs at the WSD position, but the SC will exclude some of the WS according to the coexistence and priority allocation principle, and calculate 1 for the transmission parameter limit calculation of this part of WS.
  • the Geo-location DB is WSD for the principle of primary user protection. The power distribution done does not necessarily meet the wishes of the secondary system equipment. Summary of the invention
  • an object of the present invention is to provide a method, device and system for determining transmit power, which can optimize the overall system and reduce the overall calculation amount of the system; the finally determined available spectrum and transmit power limit can satisfy the secondary system. Willingness to allocate spectrum.
  • the present invention provides a method for determining transmit power, wherein the method includes:
  • the SC is in the idle frequency list of the WSD to determine the available frequency of the WSD, and calculates the maximum allowed transmit power of each available spectrum.
  • the primary user protection related information includes one or more of the following information: reference point location information, protection ratio information, minimum expected transmit power of the primary user receiver, maximum tolerated interference value, primary user receiver type , antenna height, adjacent channel selectivity of the primary user receiver, receiver gain of the primary user receiver, primary user receiver antenna polarization, direction angle, interference margin, safety margin, idle duration of the idle spectrum.
  • the reference point is: a location point within the coverage of the primary system that is most interfered by the secondary user equipment;
  • the interference margin is: considering a margin that needs to be reserved when a plurality of secondary user equipments operate in the same frequency and/or adjacent frequency, and the total interference generated in a predetermined area;
  • the safety margin is: a margin for offsetting existing interference sources including remote primary user interference, impulse interference, and other primary user traffic interference.
  • the method before the acquiring the idle frequency list of the WSD, the method further includes: the SC receiving the idle frequency resource allocation request sent by the WSD, and receiving the device parameter of the WSD; the SC is part of the WSD The device parameters are sent to the DB.
  • part of the device parameters of the WSD includes one or more of the following information: location of the secondary user equipment, positioning accuracy, coverage, and device type.
  • the determining the available spectrum of the WSD includes: the SC selects, according to the spectrum usage situation in the idle spectrum list of each WSD managed by the SC, an idle spectrum that satisfies the coexistence requirement between WSDs in each idle spectrum as the available spectrum.
  • the coexistence requirement between the WSDs is: the WSD that initiates the idle frequency application does not interfere with other WSDs, and meets the requirement of expected service quality;
  • the requirements include one or more of the following: spectrum quantity requirements, frequency domain isolation requirements, and transmission parameter limits.
  • the calculating includes: calculating, according to the primary user protection related information of each available spectrum, the propagation model, the spectrum usage information of each WSD, and the device parameter information of the WSD that initiates the idle spectrum application, respectively calculating the WSD Maximum transmit power limit on each available spectrum.
  • the method also includes:
  • the SC sends each available spectrum and its corresponding maximum allowed transmit power to the DB, and receives an acknowledgement message or a correction message returned by the DB for the calculation result;
  • the SC sends the available spectrum included in the acknowledgement message or the modified message and its corresponding maximum allowed transmit power as the final transmit parameter limit of the WSD to the WSD.
  • the present invention provides a method for determining a transmit power, the method comprising: the DB providing a list of the idle spectrum of the WSD; wherein the list of the free spectrum is: an idle spectrum that is not used by the primary user at the location of the WSD, and Primary user protection related information corresponding to each idle spectrum.
  • the method before the DB provides the idle frequency list of the WSD, the method further includes: the DB searching for the primary user frequency usage corresponding to the WSD according to the received WSD related information of the initiated idle spectrum application.
  • the obtained frequency words that are not used by the primary user at the location of the WSD are used as the idle frequency list of the WSD, and the primary user protection related information corresponding to each idle frequency is obtained.
  • the method further includes: the DB correcting each available frequency word sent by the SC and its corresponding maximum allowed transmit power, and sending an acknowledgement message or a correction message to the SC.
  • the present invention further provides an SC, the SC includes: a transceiver module and a calculation module; wherein, the transceiver module is configured to obtain a list of the idle spectrum of the WSD; wherein the list of the idle spectrum is: the location of the WSD is not The idle spectrum used by the primary user and the primary user protection related information corresponding to each idle spectrum;
  • a calculation module configured to determine an available spectrum of the WSD according to the idle spectrum list of the WSD, and calculate a maximum allowed transmit power of each available spectrum.
  • the primary user protection related information includes one or more of the following information: reference point location information, protection ratio information, minimum expected transmit power of the primary user receiver, maximum tolerated interference value, primary user receiver type , antenna height, adjacent channel selectivity of the primary user receiver, receiver gain of the primary user receiver, primary user receiver antenna polarization, direction angle, interference margin, safety margin, idle duration of the idle spectrum.
  • the reference point is: the interference of the WSD is the strongest in the coverage of the main system.
  • the interference margin is: Consider a margin that needs to be reserved when there are multiple WSDs operating in the same frequency and/or adjacent frequency and the total interference generated in a specified area;
  • the safety margin is: a margin for offsetting existing interference sources including remote primary user interference, impulse interference, and other primary user traffic interference.
  • the transceiver module is specifically configured to receive an idle spectrum resource allocation request sent by the WSD, and receive the device parameter of the WSD, and send part of the device parameter of the WSD; and part of the device parameters of the WSD include the following One or more of the information: location of the WSD, positioning accuracy, coverage, device type.
  • the calculating module is specifically configured to select, according to the spectrum usage situation in the idle spectrum list of each WSD, an idle spectrum that satisfies the coexistence requirement between WSDs in each idle spectrum as the available spectrum;
  • the coexistence requirement between the WSDs is: the WSD that initiates the idle frequency application does not interfere with each other and meets the expected quality of service;
  • the requirements include one or more of the following: spectrum quantity requirements, frequency domain isolation requirements, and transmission parameter limits.
  • the calculating module is specifically configured to calculate, according to the primary user protection related information, the propagation model, the spectrum usage information of each WSD, and the device parameter information of the WSD that initiates the idle spectrum application, respectively.
  • the transceiver module is specifically configured to send each available spectrum and its corresponding maximum allowed transmit power, receive an acknowledgement message or a correction message for the calculation result, and use each of the acknowledgement message or the modified message.
  • the spectrum and its corresponding maximum allowable transmit power are issued as a final transmit parameter limit for the WSD.
  • the present invention further provides a DB
  • the DB includes: a storage module and a transceiver module; wherein, the transceiver module is configured to provide a WSD idle spectrum list according to the stored information of the storage module; wherein the idle spectrum list is : The location of the WSD is not used by the primary user. The idle spectrum, and the primary user protection related information corresponding to each idle spectrum;
  • the storage module is configured to provide the transceiver module with information stored by itself.
  • the transceiver module is specifically configured to search for the usage of the primary user frequency corresponding to the WSD according to the information about the WSD that initiates the idle spectrum application, and the obtained WSD is not used by the primary user at the location of the WSD.
  • the frequency is used as the idle frequency list of the WSD, and the primary user protection related information corresponding to each idle spectrum is obtained.
  • the DB further includes: a correction module, configured to modify each available spectrum and its corresponding maximum allowed transmit power, send an acknowledgement message or a correction message to the transceiver module; and correspondingly, the transceiver module is configured to: The confirmation message or correction message is issued.
  • the present invention provides a system for determining transmit power, the system comprising: SC and DB; wherein the SC is the SC described in the above scheme;
  • the DB is the DB described in the above scheme.
  • the method, device and system for determining the transmit power provided by the present invention are provided by the SC according to the idle spectrum list of the WSD, the idle spectrum not used by the primary user at the location of the WSD, and the primary user protection corresponding to each idle frequency Related information, determining the available frequency of the WSD, and calculating the maximum allowed transmit power of each available spectrum.
  • the SC can jointly consider the coexistence of the primary and secondary systems and the coexistence between the WSDs, effectively realizing the overall optimization of the system, reducing the overall calculation amount of the system; and finally determining the available frequency and transmit power limits. Able to meet the spectrum allocation willingness of the secondary system.
  • FIG. 1 is a schematic flow chart of a method for determining transmit power according to the present invention
  • FIG. 2 is a schematic structural diagram of a system for determining a transmission power according to the present invention
  • Figure 3 is a schematic view showing the structure of the SC
  • Figure 4 is a schematic diagram 1 of the DB composition
  • Figure 5 is a schematic diagram 2 of the DB composition
  • FIG. 6 is a schematic flowchart of a method in Embodiment 1 of the present invention.
  • Figure 7 is a schematic diagram of a reference point in the first embodiment of the present invention.
  • Embodiment 4 of the present invention is a schematic flowchart of a method in Embodiment 4 of the present invention.
  • FIG. 10 is a schematic flowchart of a method in Embodiment 5 of the present invention. detailed description
  • the SC obtains the idle spectrum list of the WSD from the DB; the SC determines the available spectrum of the WSD according to the idle spectrum list of the WSD, and calculates the maximum allowed transmit power of each available spectrum.
  • the operation flow of the frequency language coordinator side in the method for determining the transmit power in the embodiment of the present invention, as shown in FIG. 1, includes the following steps:
  • Step 101 The SC acquires a list of the idle spectrum of the WSD.
  • the idle spectrum list is: an idle frequency that is not used by the primary user at the location of the WSD, and related information about primary user protection corresponding to each idle frequency.
  • the primary user protection related information includes one or more of the following information: reference point location information, protection ratio information, minimum expected transmit power of the primary user receiver, maximum tolerated interference value, primary user receiver type, antenna Height, adjacent channel selectivity of the primary user receiver, reception gain of the primary user receiver, polarization mode of the primary user receiver antenna, direction angle, interference margin, safety margin, idle duration of the idle spectrum;
  • the reference point is: a location point in the coverage of the main system that is most interfered by the WSD; the interference margin is: considering that a plurality of WSDs work in the same frequency and/or adjacent frequency on a specified area, The total amount of interference generated, the margin to be reserved; the safety margin is: used to cancel the interference of existing interference sources including remote primary user interference, impulse interference and other primary user traffic interference, The reserved amount.
  • the receiving the idle frequency resource allocation request sent by the WSD comprises: receiving, by the SC, an idle frequency resource allocation request sent by a secondary user equipment (WSD, White Space Device), And receiving the device parameters of the WSD; the SC sends part of the device parameters of the WSD1 to a database (DB, Geo-location Database).
  • WSD secondary user equipment
  • DB Geo-location Database
  • the device parameters include: antenna position, positioning accuracy, device type, device auxiliary type, technical identification, device uniform identification, antenna height, polarization mode, antenna direction angle, and antenna pitch angle.
  • the device parameters of the WSD include one or more of the following information: location of the WSD, positioning accuracy, coverage, and device type.
  • Step 102 The SC determines an available spectrum of the WSD according to the idle frequency list of the WSD, and calculates a maximum allowed transmit power of each available spectrum.
  • the determining the available frequency of the WSD includes: selecting an idle frequency that satisfies the inter-WSD coexistence requirement as an available frequency in each idle spectrum according to the spectrum usage in the managed idle spectrum list of each WSD.
  • the inter-WSD coexistence requirement is: the WSD that initiates the idle spectrum application does not interfere with other WSDs, and meets the requirement of expected quality of service; the requirement is reflected by the WSD for initiating the idle spectrum application.
  • Spectrum limitations specifically include one or more of the following restrictions: spectrum quantity requirements, frequency domain isolation requirements, and emission parameter limits.
  • the calculating includes: calculating, according to the primary user protection related information of each available spectrum, the propagation model, the spectrum usage information of each WSD, and the device parameter information of the WSD that initiates the idle spectrum application, respectively calculating the WSD in each available spectrum. Maximum transmit power limit on.
  • the method further includes: sending, by the SC, each available spectrum and its corresponding maximum allowed transmit power to the DB, and receiving an acknowledgement message or a correction message returned by the DB for the calculation result; the SC may be in the acknowledgement message or the modified message.
  • Each of the included available spectrums and their corresponding maximum allowed transmit power is sent to the WSD as a final transmit parameter limit for the WSD.
  • the operation flow of the database side in the method for determining the transmit power of the embodiment of the present invention includes: the DB provides a list of the idle spectrum of the WSD; wherein the list of the free spectrum is: the idle spectrum that is not used by the primary user at the location of the WSD And the primary user protection corresponding to each idle spectrum Information.
  • the DB searches for the usage of the WSD corresponding to the WSD according to the information about the WSD of the WSD that is sent by the SC, and obtains the spectrum that is not used by the primary user at the location of the WSD.
  • the WSD idle spectrum list obtains the primary user protection related information corresponding to each idle spectrum; and provides the WSD idle spectrum list and the primary user protection related information corresponding to each idle spectrum to the SC.
  • the DB corrects each available frequency word sent by the SC and its corresponding maximum allowed transmit power, and sends an acknowledgement message or a correction message to the SC.
  • the system for determining the transmit power provided by the embodiment of the present invention includes: a database (DB, Geo-location Database) 21 and a spectrum controller (SC, Spectrum Controller) 22;
  • the SC21 is configured to obtain an idle frequency list of the WSD from the DB, determine an available spectrum of the WSD according to the idle spectrum list of the WSD, and calculate a maximum allowed transmit power of each available spectrum.
  • the DB22 is configured to provide the idle spectrum list of the WSD and the primary user protection related information corresponding to each idle frequency to the SC, where the idle spectrum list is: the idle spectrum that is not used by the primary user at the location of the WSD And the primary user protection related information corresponding to each idle spectrum.
  • An SC as shown in FIG. 3, includes: a transceiver module 31 and a calculation module 32.
  • the transceiver module 31 is configured to obtain a list of idle spectrums of the WSD after receiving the idle spectrum resource allocation request.
  • the calculating module 32 is configured to determine, according to the idle spectrum list of the WSD, the available spectrum of the WSD, and calculate a maximum allowed transmit power of each available spectrum.
  • the idle spectrum list is: an idle spectrum that is not used by the primary user at the location of the WSD, and primary user protection related information corresponding to each idle spectrum.
  • the primary user protection related information includes one or more of the following information: reference point location information, protection ratio information, minimum expected transmit power of the primary user receiver, maximum tolerated interference value, primary use Receiver type, antenna height, adjacent channel selectivity of the primary user receiver, receive gain of the primary user receiver, primary user receiver antenna polarization, direction angle, interference margin, safety margin, the idle spectrum Idle time;
  • the reference point is: a location point in the coverage of the main system that is most interfered by the WSD; the interference margin is: considering that a plurality of WSDs work in the same frequency and/or adjacent frequency on a specified area, The total amount of interference generated, the margin to be reserved; the safety margin is: used to cancel the interference of existing interference sources including remote primary user interference, impulse interference and other primary user traffic interference, The reserved amount.
  • the transceiver module 31 is specifically configured to receive an idle spectrum resource allocation request, and receive device parameters of the WSD; and send part of the device parameters of the WSD 1.
  • the device parameters include: antenna position, positioning accuracy, device type, device auxiliary type, technical identification, device uniform identification, antenna height, polarization mode, antenna direction angle, and antenna pitch angle.
  • the device parameters of the WSD include one or more of the following information: location of the WSD, location accuracy, coverage, and device type.
  • the calculating module 32 is specifically configured to select, according to the spectrum usage situation in the idle spectrum list of each WSD, an idle spectrum that satisfies the coexistence requirement between WSDs in each idle spectrum as the available spectrum.
  • the coexistence requirement between the WSDs is: a coexistence requirement between the WSDs, where the WSDs that initiate the idle spectrum application do not interfere with each other and meet the expected quality of service; the coexistence requirement can be embodied as:
  • the limitation of the spectrum used by the WSD that initiates the idle spectrum application specifically includes one or more of the following restrictions: spectrum quantity requirement, frequency domain isolation requirement, and transmission parameter limitation.
  • the calculating module 32 is specifically configured to calculate, according to the primary user protection related information, the propagation model, the spectrum usage information of each WSD, and the device parameter information of the WSD that initiates the idle spectrum application, respectively, to calculate the WSD. Maximum transmit power limit on each available spectrum.
  • the calculating module 32 is specifically configured to send each available spectrum and its corresponding maximum allowed transmit power to the transceiver module.
  • the transceiver module 31 is specifically configured to use each available spectrum and its corresponding maximum allowed transmit power. issue.
  • the transceiver module can be implemented by an antenna or a hardware such as a CPU or a DSP.
  • the computing module can be implemented by hardware such as a CPU or a DSP.
  • the DB includes: a storage module 41 and a transceiver module 42; wherein, the transceiver module 41 is configured to send the idle spectrum list of the WSD and the primary user protection related information corresponding to each idle spectrum;
  • the storage module 42 is configured to provide the transceiver module with information stored by itself.
  • the transceiver module 41 is configured to search for a spectrum usage of the primary user corresponding to the WSD in the storage module according to the information about the WSD that initiates the idle spectrum application, where the obtained WSD is not used by the primary user.
  • the frequency is used as the idle frequency list of the WSD, and the primary user protection related information corresponding to each idle spectrum is obtained.
  • the DB may further include: a correction module, configured to modify each available spectrum and its corresponding maximum allowed transmit power, and send a correction result to the transceiver module; correspondingly, the transceiver module Specifically, used to issue correction results.
  • a correction module configured to modify each available spectrum and its corresponding maximum allowed transmit power, and send a correction result to the transceiver module; correspondingly, the transceiver module Specifically, used to issue correction results.
  • the transceiver module can be implemented by an antenna or a hardware such as a CPU or a DSP; the storage module can be implemented by hardware such as a ROM.
  • the correction module can be implemented by hardware such as a CPU or a DSP.
  • Step 601 WSD1 sends an idle spectrum resource allocation request to the SC, and provides device parameters.
  • the device parameters include: antenna position (54.2 degrees east longitude, 67 degrees north latitude), positioning accuracy (100m), device type (Fixed WSD), device auxiliary type (spectral template information), technical identification (LTE), device uniform identification (such as FCC device ID), antenna height (10m), polarization mode (horizontal polarization), antenna direction angle (omnidirectional antenna), antenna pitch angle (25 degrees).
  • Step 602 After receiving the idle frequency resource allocation request of the WSD1, the SC sends the partial device parameters of the WSD1 to the DB.
  • the partial device parameters include: antenna position (54.2 degrees east longitude, 67 degrees north latitude), positioning accuracy (100m), device type (Fixed WSD); the purpose of sending to the DB is: DB Based on this information, the free spectrum information at the location of the WSD is determined.
  • Step 603 The DB determines the idle spectrum of the location where WSD1 is located.
  • the DB searches for the frequency usage of the TV system based on the location of the WSD1.
  • the TVWS resources that are not used by the TV system in the area include: ⁇ frequency words 25, 30, 34, 40, 45, 46, 50 ⁇ .
  • Step 604 The DB feeds back to the SC the idle spectrum list and the primary user protection related information corresponding to each idle frequency.
  • the primary user protection related information corresponding to each idle spectrum includes: primary user type, reception type, reference point location information, protection ratio information, minimum expected reception power of the primary user receiver, and reception gain of the primary user receiver, User receiver antenna polarization mode, direction angle;
  • Figure 7 is a schematic diagram of the reference point. Take the three main users around WSD1 as an example.
  • the real curve is the coverage of each main user.
  • the points on each curve are the reference points of each main user, that is, the WSD1 interference is covered in the coverage of each main user. The strongest point
  • Step 605 The SC determines the available frequency of the WSD and calculates the maximum allowed transmit power for each available frequency.
  • fp is the center frequency and D is the isolation distance
  • the interference relationship between the above three WSDs and WSD1 is calculated (here, the transmit power is assumed according to the type of WSD1, and the WSD1 transmit power is assumed to be 40 dBm in this embodiment), and the frequency domain isolation distance between each other is determined.
  • WSD2 and WSD1 Take WSD2 and WSD1 as examples: The location of the two devices is fixed. The working parameters in the above table of WSD2 work. WSD1 transmits with the assumed transmit power. Under the respective transmit template, the calculation meets the preset performance requirements of the respective cells (such as When throughput, etc.), the required distance in the frequency domain is isolated: (This calculation process can also be based on the accumulation of empirical values).
  • the frequency separation between WSD2 and WSD1 is two TV spectrums, which is used by WSD2.
  • TV spectrum 34 and its first adjacent channel cannot be used by WSD1, and TV frequency 33, 34, 35 is disabled spectrum for WSD1;
  • the frequency separation between WSD3 and WSD1 is 1 TV spectrum, that is, different frequency.
  • the spectrum 40 used by WSD3 is disabled for WSD1.
  • WSD4 also guarantees different frequencies, that is, frequency 45 is disabled for WSD1.
  • WSD1 disables the frequency: 33, 34, 35, 40, 45.
  • the available frequency of WSD1 is frequency: 25, 30, 46, 50.
  • s is the operating frequency of the perceived BS transmitter ( MHz ); f, the target operating spectrum of the WSD ( MHz ) ; p m D ⁇ fwsD): a maximum allowable EIRP (dBm) at a frequency on a WSD; minimum input power at the upper BS receiver; p U s) Set an appropriate BS protection ratio for spectral offset to prevent WSD interference BS receiver.
  • the protection ratio When the protection signal level is close to the receiver sensitivity (ie, when the WSD is operating close to the broadcast coverage edge), the protection ratio also needs to consider the receiver sensitivity fading to include a 3 dB margin.
  • M/ Considering the total interference of multiple WSDs (same and adjacent) operating simultaneously on a specified area, there are 3-6dB (related to the number of interferences) multiple interference margins (3dB corresponds to two interferences,
  • 5dB corresponds to 3 interferences, 6dB corresponds to 4 interferences);
  • Safety margin (dB); This margin is used to cancel interference from existing sources of interference, including far-end DTT interference, impulse interference, and other primary user traffic interference. The range of this margin (eg 3 to 20 dB) needs to be considered. Some administrative domains consider setting the safety margin to OdB;
  • D BS receiver antenna direction difference (dB), related to WSD signal
  • D BS receiver polarization difference (dB), related to the WSD signal
  • G ' omnidirectional antenna gain of the BS receiving device; : feeder loss of the BS receiving device;
  • Step 606 The SC sends each available spectrum and its corresponding maximum allowed transmit power to the WSDK.
  • Step 607 WSD1 selects an available spectrum according to actual needs, and determines the transmission power.
  • Step 608 WSD1 uses layer-by-layer feedback to use SC and DB.
  • WSD1 sends a request for the allocation of the idle spectrum resource.
  • SC saves the information about the primary user under the primary user type
  • the signaling flow determined by the WSD1 available spectrum and the transmit power limit is shown in Figure 6. Detailed description of # ⁇ :
  • Step 701-Step 703 The same as Embodiment 1, and details are not described herein;
  • Step 704 The DB feeds back to the SC the idle spectrum list and the primary user protection related information corresponding to each idle frequency.
  • the SC saves the specific primary user information corresponding to each primary user type. Therefore, in the feedback of the idle spectrum list and the primary user protection related information corresponding to each idle spectrum, only the primary user type and related reference points are provided.
  • the location coordinate information can be, including: the main user type,
  • Step 705 The SC determines the available frequency of the WSD, and calculates the maximum allowed transmit power of each available frequency.
  • the difference from the first embodiment is that the other information in the main user type is stored in the SC, and the other calculation methods are the same as those in the first embodiment, and details are not described herein again.
  • Step 706 - Step 709 The same as steps 606-609 in the first embodiment.
  • WSD1 issues an idle frequency resource allocation request, and the signaling flow for the DB to verify the calculation result of the SC is as shown in FIG. 8.
  • Step 801-Step 805 The same as Embodiment 1, and details are not described herein;
  • Step 806 The SC will simultaneously consider the maximum transmit power after the primary user protection and the WSD coexistence. Limit the calculation result to the DB.
  • the information sent to the DB at the same time also includes the device parameter information provided by the WSD1 to the SC in step 1.
  • Antenna position (54.2 degrees east longitude, 67 degrees north latitude), positioning accuracy (100m), device type (Fixed WSD), device auxiliary shot Type (spectral template information), technical identification (LTE), device uniform identification (such as FCC device ID), antenna height (10m), polarization mode (horizontal polarization), antenna direction angle (omnidirectional antenna), antenna pitch angle (25 degrees); as shown in the following table:
  • Step 807 The DB confirms the calculation result.
  • the judgment is based on the primary user protection criterion. If the determination result is that the calculation result meets the requirement, the process proceeds to step 708. If the calculation result does not meet the primary user protection requirement, the result is corrected by the DB's own calculation;
  • Step 808 The DB sends an acknowledgement message to the SC.
  • step 807 by the judgment of the DB in step 807, it is concluded that the maximum transmit power limit given satisfies the primary user protection requirement, and thus the calculation result is confirmed;
  • step 807 If the result of the calculation in step 807 does not comply with the primary user protection requirement, and the correction is made, the result of the correction is sent to the SC in this step, and is sent as the final operational parameter of the SC to the SC.
  • Steps 809-812 The same as steps 606-609 in the first embodiment, and details are not described herein again.
  • WSD1 issues an idle frequency resource allocation request, and the signaling flow for the DB to verify the calculation result of the SC is as shown in FIG. 9.
  • Step 901 The same as step 1 in the first embodiment, and details are not described herein again.
  • Step 902 The SC sends a WS frequency resource application message to the DB, and provides all device parameters, including: antenna position (WSD1: 55 degrees east longitude, 67.5 degrees north latitude; WSD2: longitude 54.2 Degree, latitude 67 degrees), positioning accuracy (100m), device type (WSD1: Fixed WSD;
  • WSD2 portable WSD
  • device auxiliary type frequency template information
  • technical identification LTE
  • device uniform identification such as FCC device ID
  • antenna height 10m
  • polarization mode horizontal polarization
  • antenna direction Angle omnidirectional antenna
  • antenna pitch angle 25 degrees
  • Steps 903-905 The same as steps 603-605 in the first embodiment, and details are not described herein again.
  • Step 906 The SC sends each available spectrum and its corresponding maximum allowed transmit power to
  • the transmission will consider the calculation result of the maximum transmit power limit after the primary user protection and the WSD coexistence, and send it to the DB; as shown in the following table:
  • Step 907 The DB confirms the calculation result.
  • the judgment is based on the main user protection criterion. If the judgment result is that the calculation result meets the requirement, the process proceeds to step 908. If the calculation result does not meet the main user protection requirement, the result is corrected by the DB's own calculation; the judgment result shows that the SC provides The calculation results need to be corrected as shown in the following table:
  • Step 908 The DB sends an operation parameter correction message to the SC.
  • the updated spectrum list information (Table 7, operation parameters) of the above update is sent to the SC;
  • Steps 910-912 The same as steps 607-609 in the first embodiment, and details are not described herein again.
  • Embodiment 5 When WSD1 issues an idle spectrum resource allocation request, the signaling flow determined by the available spectrum and transmission power limitation of the WSD is as shown in FIG. 10, which is described in detail below:
  • Step 1001 - Step 1004 The same as Embodiment 1, and details are not described herein;
  • Step 1005 After calculating the following available spectrum list and the maximum allowable transmit power limit, the SC selects its operating spectrum and transmission parameters for WSD1; selects spectrum 25 as its operating spectrum, and the transmitting power is 40 dBm, as shown in the following table:
  • Step 1006 The SC sends the usage parameters of WSD1 to WSD1.
  • Step 1007 WSD1 performs the specified configuration according to the usage parameters determined by the SC, including configuring to the specified spectrum 25 and transmitting at the specified transmit power of 40 dBm.
  • Step 1008 The SC feeds back parameters to the DB.
  • step 1007 and step 1008 can be interchanged, and the two are performed independently.

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

Abstract

L'invention concerne un procédé, un dispositif et un système destinés à déterminer une puissance d'émission. Le procédé comporte les étapes suivantes: un coordinateur de spectre (SC) acquiert une liste de spectres inutilisés d'un équipement d'utilisateur secondaire (WSD), la liste de spectres inutilisés comportant: des spectres inutilisés qui ne sont pas utilisés par un utilisateur principal dans la position où est situé le WSD, et des informations pertinentes pour la protection concernant l'utilisateur principal correspondant à chaque spectre inutilisé; et le SC détermine des spectres disponibles du WSD d'après la liste de spectres inutilisés de the WSD, et obtient par un calcul la puissance maximale admissible d'émission de chaque spectre disponible.
PCT/CN2014/079878 2013-09-06 2014-06-13 Procédé, dispositif et système de détermination de puissance d'émission WO2015032234A1 (fr)

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CN111683374A (zh) * 2019-03-11 2020-09-18 索尼公司 用于无线通信的电子设备和方法、计算机可读存储介质
CN111918295B (zh) * 2019-05-10 2021-03-16 苏州全波通信技术股份有限公司 基于增强邻频的白频谱优化利用方法

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