EP3797537A1 - A method for creating lsrai information (lsa spectrum resource availability information) - Google Patents

A method for creating lsrai information (lsa spectrum resource availability information)

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Publication number
EP3797537A1
EP3797537A1 EP19721294.7A EP19721294A EP3797537A1 EP 3797537 A1 EP3797537 A1 EP 3797537A1 EP 19721294 A EP19721294 A EP 19721294A EP 3797537 A1 EP3797537 A1 EP 3797537A1
Authority
EP
European Patent Office
Prior art keywords
primary user
network
protected
radio
lsa
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19721294.7A
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German (de)
French (fr)
Inventor
Pierre-Jean Muller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Red Technologies SAS
Original Assignee
Red Technologies SAS
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Filing date
Publication date
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Publication of EP3797537A1 publication Critical patent/EP3797537A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies

Definitions

  • Figure 1 shows an example of architecture according to the state of the art of LSA.
  • Figure 2 shows an example of spectrum pre-emption according to the state of the art of LSA.
  • Figure 3 depicts a message sequence chart for performing spectrum pre-emption according to the state of the art of LSA as illustrated in Figures 1 and 2.
  • Figure 4 shows the example of a state of the art of LSA architecture to which a tactical mobile radio network has been added as a primary user.
  • Figure 5 depicts a message sequence chart for making it possible to carry out end-to-end spectrum pre-emption and in accordance with the invention as illustrated in Figure 4.
  • a radio environment map or REM representing a dynamic, multi-dimensional and real-time radio environment, can be used to assist the decision-making process in many telecommunication applications such as the configuration, optimization, repair of radio networks, dynamic radio planning, and radio spectrum sharing for the field of civil telecommunications, security and military.
  • the REM may be designed as a database containing information on the radio environment (for example the received signal strength of a RF signal, the loss of a RF signal related to its propagation in the surrounding physical environment, or an aggregated level of radio interference) and represented in the spatial, temporal and frequency dimensions.
  • information on the radio environment for example the received signal strength of a RF signal, the loss of a RF signal related to its propagation in the surrounding physical environment, or an aggregated level of radio interference
  • the information that makes the REM is computed for the spatial, temporal and frequency dimensions using advanced models of radio frequency (RF) propagation.
  • RF radio frequency
  • the REM is built using the network information of deployed radio transmitters and radio receivers, using their technical characteristics and RF configurations, using other radio frequency environment information such as digital terrain models, land-cover models or above-ground footprint, digital building models, climate models, ground refiractivity, air permittivity, and any other data that interferes with the propagation of RF signals (see patent FR3020529).
  • the REM is enriched with RF measurements measured in the field; these real measurements can be used to calibrate the RF propagation models, continuously and in real time (see patent FR3039961).
  • the REM can be visualized for example using a GIS (Geographic Information System) interface, in order to display the information in the spatial, temporal and frequency dimensions.
  • GIS Geographic Information System
  • Licensed Shared Access makes it possible to share the spectrum between primary users and secondary users.
  • Primary users have priority access to the spectrum over secondary users.
  • the transmitters of the secondary users e.g. radio base stations, in the case of a mobile operator
  • the transmitters of the secondary users are reconfigured in order to not generate unwanted interference on primary users.
  • the primary user uses the same radio technology as the secondary user, it may be advantageous to reuse the secondary user's network for the benefit of the primary user.
  • Figure 1 shows an example of architecture according to the state of the art of LSA.
  • LR LSA Repository
  • the LR is connected to“LSA Controllers” (LCs).
  • LCs LSA Controllers
  • Each LC is responsible for processing the pre-emption requests from the LR and identifying network elements to be reconfigured so as not to generate interference on the primary user; this task of the LC can also be partially carried out by the "Network Manager” (NM), according to the functional division chosen by the operator.
  • NM Network Manager
  • the NM and its associated radio base stations are the elements of the secondary user's network.
  • This network may for example be a 3GPP LTE network.
  • the NM is the entity responsible for the reconfiguration of the radio base stations.
  • LSA Licensed Shared Access
  • LC lntegration Reference Point
  • SS Solution Set
  • Figure 2 shows an example of spectrum pre-emption according to the state of the art of LSA.
  • the left part of Figure 2 shows the network status of a secondary user when there is no spectrum pre-emption.
  • the circles around the radio base stations indicate their respective radio coverage.
  • a radio base station is coloured“white” if it is used by the secondary user's network.
  • a radio base station is coloured“gray” if it is off.
  • the dashed rectangle indicates a geographical area of pre-emption, on which the primary user wishes to have access to the spectrum.
  • the right side of Figure 2 shows the state of the network once the pre-emption request has been processed.
  • the radio base stations 1, 2, and 3 are off so as not to generate interference on the pre-empted geographical area shown in dashed lines.
  • Radio base stations 4 and 5 are still allowed to transmit, but their transmission power has been reduced so as not to generate interference on the pre-empted geographical area.
  • Figure 3 depicts a message sequence chart for performing the network reconfiguration as illustrated in Figures 1 and 2 in an LSA architecture.
  • a primary user sends a spectrum pre-emption request to the LR.
  • the spectrum pre-emption request defines the spectrum pre-emption with information such as the geographical area, the maximum interference level tolerated by the primary user.
  • the LR sends to the LC the LSA Spectrum Resource Availability Information (LSRAI) describing resource information that can be used by the secondary user or be restricted for secondary use.
  • LSRAI LSA Spectrum Resource Availability Information
  • the message transmitted by the LR to the LC may, for example, correspond to the message "LSRAI Notification" as defined in the document ETSI TS 103 379.
  • the secondary user identifies the new radio network parameters of the secondary user based on the new LSRAI information received.
  • the network parameters of the secondary user that can be modified by the LC or via the NM can consist, for example, for a given radio base station of the network, by: a modification of the transmitted power,
  • the change by the secondary user, the LC in the case of LSA, of these parameters of the secondary user’s network may have the following objectives: to modify the radio coverage of a radio base station so that it covers all or part of the geographical pre emption zone, and thus be able to serve the users of the primary user's network, when this radio base station is located in or near the pre-empted geographical area,
  • the secondary user the LC in the case of LSA, sends these new parameters to the NM.
  • these parameters of the secondary user’s networks may be provided to the NM through the message "cellsConstraintsUpdate" as defined in ETSI TS 128.302.
  • the NM then reconfigures the radio base stations of the secondary user’s network according to these parameters.
  • a confirmation is transmitted to the primary user via the LC and the LR (steps 4 to 6 of Figure 3).
  • the primary user can then connect to the radio base stations that cover the pre-empted area, without receiving interference from the secondary user.
  • the spectrum pre-emption request is transmitted from the LC to the NM through the "notifyZoneCreation" message or the "notifyZoneModification” message as defined in the ETSI TS 128.302.
  • the new network parameters of the secondary user are identified by the NM.
  • the present invention goes beyond the state of the art of LSA by describing not only a method of creating LSRAI information (LSA Spectrum Resource Availability Information) based on spectrum usage requested by a priority user (called primary user) to the detriment of the current user (called secondary user); however, this method also allows the automation of the end-to-end and real-time pre-emption process to enable dynamic and latency- free spectrum pre-emption by a primary user.
  • LSRAI information LSRAI Information
  • the parameters of the following base station antenna elements latitude, longitude, antenna height, azimuth, down tilt, horizontal and vertical radiation patterns, if any, beamforming parameters, and
  • ARP Address and Retention Priority
  • ACB Access Class Barring
  • the hand-over parameters of the cells associated with the radio base stations e. the hand-over parameters of the cells associated with the radio base stations, and f. the identities of the radio base stations and associated cells.
  • each radial corresponds to the line extending up to 40 km from the location of the said base station
  • the received signal strength from the said radio base station is calculated at points evenly spaced of 30 meters using RF propagation models, and iii. along each radial, a vertex is defined at the distance corresponding to the received signal strength equal or close to -106 dBm / MHz, and
  • a first contour is defined by connecting the 360 vertices, and v. the contour is smoothed using a "Hamming" filter of order 15, and
  • the radio coverage of the said primary user’s network to be protected is finally formatted as standardized information elements composing the LSRAI (LSA Spectrum Resource Availability Information) as defined by ETSI TS 103 379 and then sent via the LSA-l interface to LC;
  • LSRAI Spectrum Resource Availability Information
  • Received signal strength in step 2.a.ii above is calculated using RF propagation models, digital terrain models, land cover, digital building models, climate models, soil refractivity, air permittivity, and in general, any data that interferes with the propagation of RF signals.
  • the radio coverage of the said primary user’s network to be protected shall be protected from co-channel radio transmissions of the secondary user's radio base stations located within 40 km of any point of the said protected zone, and where the protection level against interference of any point of the said protected zone is set to -90 dBm / MHz protection level.
  • LSRAI Spectrum Resource Availability Information
  • LSRAI contains one or more geographical zones corresponding to the radio coverage of the said primary user’s network to be protected calculated by the steps above,
  • each zone of LSRAI is of type "protection"
  • each zone contains:
  • FIGS 4 and 5 illustrate the method of the present invention.
  • Figure 4 shows the example of a state of the art of LSA architecture to which a tactical mobile radio network has been added as a primary user.
  • the radio environment maps (REM)s in Figure 4 represent a deployment option where the REM function for calculating the radio coverage of the network newly deployed by the primary user and to be protected is hosted in the network of the primary user and the REM function for validating the radio coverage to protect according to the rights of the primary user for pre-empting the access to spectrum on the said coverage area is hosted in the LR.
  • Another deployment option not shown in Figure 4 is to group the REM function for calculating the radio coverage of the network newly deployed by the primary user and to be protected and the REM function for validating the radio coverage to be protected according to the rights of the primary user for pre-empting the spectrum on the said coverage area in the LR.
  • Another deployment option not shown in Figure 4 is to have the REM function for calculating the radio coverage of the network newly deployed by the primary user and to be protected distributed on every radio base stations deployed by the primary user; in this case, the REM function for validating the radio coverage to be protected and hosted in the LR will have the task of making the union of the individual radio coverage as defined in step 2.b. above to form the overall radio coverage to be protected that corresponds to the entire deployed network of the primary user.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

The present invention claims to go beyond the state of the art of LSA by describing not only a method of creating the LSRAI (LSA Spectrum Resource Availability Information) as a function of the real spectrum usage requested by a priority user ( called primary user) to the detriment of the current user (called secondary user); however, this method also allows the automation of the end-to-end and real-time spectrum pre-emption process to allow for dynamic and latency-free spectrum pre-emption by a primary user.

Description

A method for creating LSRAI information (LSA Spectrum Resource Availability Information) Description of the invention Description of the Figures
Figure 1 shows an example of architecture according to the state of the art of LSA.
Figure 2 shows an example of spectrum pre-emption according to the state of the art of LSA.
Figure 3 depicts a message sequence chart for performing spectrum pre-emption according to the state of the art of LSA as illustrated in Figures 1 and 2.
Figure 4 shows the example of a state of the art of LSA architecture to which a tactical mobile radio network has been added as a primary user.
Figure 5 depicts a message sequence chart for making it possible to carry out end-to-end spectrum pre-emption and in accordance with the invention as illustrated in Figure 4.
Description of the state of the art of a radio environment map (REM)
A radio environment map or REM representing a dynamic, multi-dimensional and real-time radio environment, can be used to assist the decision-making process in many telecommunication applications such as the configuration, optimization, repair of radio networks, dynamic radio planning, and radio spectrum sharing for the field of civil telecommunications, security and military.
The REM may be designed as a database containing information on the radio environment (for example the received signal strength of a RF signal, the loss of a RF signal related to its propagation in the surrounding physical environment, or an aggregated level of radio interference) and represented in the spatial, temporal and frequency dimensions.
The information that makes the REM is computed for the spatial, temporal and frequency dimensions using advanced models of radio frequency (RF) propagation. These complex RF propagation models take into account a multitude of physical phenomena related to the propagation of RF signals (see patent FR3020530).
The REM is built using the network information of deployed radio transmitters and radio receivers, using their technical characteristics and RF configurations, using other radio frequency environment information such as digital terrain models, land-cover models or above-ground footprint, digital building models, climate models, ground refiractivity, air permittivity, and any other data that interferes with the propagation of RF signals (see patent FR3020529).
In addition, the REM is enriched with RF measurements measured in the field; these real measurements can be used to calibrate the RF propagation models, continuously and in real time (see patent FR3039961).
The REM can be visualized for example using a GIS (Geographic Information System) interface, in order to display the information in the spatial, temporal and frequency dimensions.
For many years, the concept of the REM has been the subject of mainly academic work without the aim of industrialization.
However to be exploitable in an industrial field, such as fields of civil telecommunications, security and military, the REM needs to obtain reliable results representing a radio environment close to reality.
Description of the state of the art of Licensed Shared Access (LSA)
In order to maximize the use of spectrum, new models for sharing spectrum between different users have been defined. For example, Licensed Shared Access (LSA) makes it possible to share the spectrum between primary users and secondary users.
Primary users have priority access to the spectrum over secondary users.
When primary users use spectrum in a given geographical area, the transmitters of the secondary users (e.g. radio base stations, in the case of a mobile operator) likely to interfere with this geographical area are reconfigured in order to not generate unwanted interference on primary users.
Alternatively, and when the primary user uses the same radio technology as the secondary user, it may be advantageous to reuse the secondary user's network for the benefit of the primary user.
Figure 1 shows an example of architecture according to the state of the art of LSA.
In this Figure, a primary user is connected to an“LSA Repository” (LR).
The LR is connected to“LSA Controllers” (LCs). Each LC is responsible for processing the pre-emption requests from the LR and identifying network elements to be reconfigured so as not to generate interference on the primary user; this task of the LC can also be partially carried out by the "Network Manager" (NM), according to the functional division chosen by the operator.
The NM and its associated radio base stations (often referred to eNodeBs or "eNBs") are the elements of the secondary user's network. This network may for example be a 3GPP LTE network.
The NM is the entity responsible for the reconfiguration of the radio base stations.
For more information on LSA see the following ETS1 standards:
ETS1 TS 103 154“System requirements for operation of Mobile Broadband Systems in the 2300 MHz -2400 MHz band under LSA”, TS 103 235“System Architecture and High-Level Procedures for operation of LSA in the 2300 MHz-2400 MHz band”,
ETS1 TS 103 235“System Architecture and High-Level Procedures for operation of LSA in the 2300 MHz-2400 MHz band”,
ETS1 TS 103 379 VI .1.1‘Information elements and protocols for the interface between LSA Controller (LC) and LSA Repository (LR) for operation of Licensed Shared Access (LSA) in the 2300 MHz-2400 MHz band”,
ETS1 TS 128 301 V14.0.0“LTE; Telecommunication management; Licensed Shared Access (LSA) Controller (LC) lntegration Reference Point (1RP); Requirements (3GPP TS 28.301 version 14.0.0 Release 14)”,
ETS1 TS 128 302 V14.0.0“TE; Telecommunication management; Licensed Shared Access (LSA) Controller (LC) lntegration Reference Point (1RP); lnformation Service (1S) (3GPP TS 28.302 version 14.0.0 Release 14)”,
ETS1 TS 128 303 V14.0.0“LTE; Telecommunication management; Licensed Shared Access (LSA) Controller (LC) lntegration Reference Point (1RP); Solution Set (SS) definitions (3GPP TS 28.303 version 14.0.0 Release 14)”.
Figure 2 shows an example of spectrum pre-emption according to the state of the art of LSA.
The left part of Figure 2 shows the network status of a secondary user when there is no spectrum pre-emption. The circles around the radio base stations indicate their respective radio coverage.
In this Figure, a radio base station is coloured“white” if it is used by the secondary user's network. A radio base station is coloured“gray” if it is off.
The dashed rectangle indicates a geographical area of pre-emption, on which the primary user wishes to have access to the spectrum.
In the left-hand part of Figure 2, the pre-emption request has not yet been processed. As a result, all radio base stations can be used by the secondary user's network.
The right side of Figure 2 shows the state of the network once the pre-emption request has been processed.
The radio base stations 1, 2, and 3 are off so as not to generate interference on the pre-empted geographical area shown in dashed lines.
Radio base stations 4 and 5 are still allowed to transmit, but their transmission power has been reduced so as not to generate interference on the pre-empted geographical area.
Figure 3 depicts a message sequence chart for performing the network reconfiguration as illustrated in Figures 1 and 2 in an LSA architecture.
A primary user sends a spectrum pre-emption request to the LR. The spectrum pre-emption request defines the spectrum pre-emption with information such as the geographical area, the maximum interference level tolerated by the primary user.
The LR sends to the LC the LSA Spectrum Resource Availability Information (LSRAI) describing resource information that can be used by the secondary user or be restricted for secondary use. The message transmitted by the LR to the LC may, for example, correspond to the message "LSRAI Notification" as defined in the document ETSI TS 103 379.
The secondary user, the LC in the case of LSA, identifies the new radio network parameters of the secondary user based on the new LSRAI information received.
The network parameters of the secondary user that can be modified by the LC or via the NM can consist, for example, for a given radio base station of the network, by: a modification of the transmitted power,
a modification of the parameters of the antenna,
a modification of the access priority parameters,
a modification of the list of neighbouring cells (or "neighbour cell list"),
a modification of the "hand over" parameters,
a modification of the identifier of a cell associated with this radio base station.
The change by the secondary user, the LC in the case of LSA, of these parameters of the secondary user’s network may have the following objectives: to modify the radio coverage of a radio base station so that it covers all or part of the geographical pre emption zone, and thus be able to serve the users of the primary user's network, when this radio base station is located in or near the pre-empted geographical area,
to modify the coverage of a radio base station in order to limit the interference of this radio base station on the pre-empted geographical area, when this radio base station is identified as being too far from the geographical pre-emption area to be reused by the primary user,
to modify the access of the handsets to the cells of a radio base station in order to privilege the users of the primary user, when this radio base station is located in or near the pre-emption zone, In step 3 of Figure 3, the secondary user, the LC in the case of LSA, sends these new parameters to the NM. In a 3GPP architecture, these parameters of the secondary user’s networks may be provided to the NM through the message "cellsConstraintsUpdate" as defined in ETSI TS 128.302.
The NM then reconfigures the radio base stations of the secondary user’s network according to these parameters.
After the reconfiguration of the secondary user's network has been performed, a confirmation is transmitted to the primary user via the LC and the LR (steps 4 to 6 of Figure 3).
The primary user can then connect to the radio base stations that cover the pre-empted area, without receiving interference from the secondary user.
In an alternative to step 3 illustrated in Figure 3, the spectrum pre-emption request is transmitted from the LC to the NM through the "notifyZoneCreation" message or the "notifyZoneModification" message as defined in the ETSI TS 128.302. In this alternative, the new network parameters of the secondary user are identified by the NM.
However, the state of the art of LSA including the ETSI standards cited above does not describe a method for creating the LSRAI information (LSA Spectrum Resource Availability Information).
Description of the invention
The present invention goes beyond the state of the art of LSA by describing not only a method of creating LSRAI information (LSA Spectrum Resource Availability Information) based on spectrum usage requested by a priority user (called primary user) to the detriment of the current user (called secondary user); however, this method also allows the automation of the end-to-end and real-time pre-emption process to enable dynamic and latency- free spectrum pre-emption by a primary user.
This method is characterized by the following steps:
1. acquisition, preferably automatically, of the data of the deployed radio base stations (also referred as eNBs in the case of a 3 GPP / LTE network) of the primary user consisting of the following information: a. base station transmission powers, and
b. the parameters of the following base station antenna elements: latitude, longitude, antenna height, azimuth, down tilt, horizontal and vertical radiation patterns, if any, beamforming parameters, and
c. the access priority parameters of the cells associated with the radio base stations such as "Allocation and Retention Priority" (ARP), the "Access Class Barring" (ACB), and d. neighbouring cell lists, and
e. the hand-over parameters of the cells associated with the radio base stations, and f. the identities of the radio base stations and associated cells.
2. from the data collected in the previous step, define a contour of the radio coverage to be protected (or protection zone) of the said primary user’s network as follows:
a. for each radio base station of the said primary user’s network:
i. it is defined 360 radials separated by one degree where each radial corresponds to the line extending up to 40 km from the location of the said base station, and
ii. along each radial, the received signal strength from the said radio base station is calculated at points evenly spaced of 30 meters using RF propagation models, and iii. along each radial, a vertex is defined at the distance corresponding to the received signal strength equal or close to -106 dBm / MHz, and
iv. a first contour is defined by connecting the 360 vertices, and v. the contour is smoothed using a "Hamming" filter of order 15, and
b. once all contours have been defined corresponding of all radio base stations of the said primary user’s network, the union of all the contours is defined; this union corresponds to the overall contour of the radio coverage of the said primary user’s network to be protected; the result of the union may be disjoint contours when individual contour limits do not overlap.
3. the radio coverage to be protected of the said primary user’s network is then checked against the rights of the primary user, as recorded in the“LSA Repository” (LR), for pre-empting the access to spectrum, and
4. the radio coverage of the said primary user’s network to be protected is finally formatted as standardized information elements composing the LSRAI (LSA Spectrum Resource Availability Information) as defined by ETSI TS 103 379 and then sent via the LSA-l interface to LC;
Received signal strength in step 2.a.ii above is calculated using RF propagation models, digital terrain models, land cover, digital building models, climate models, soil refractivity, air permittivity, and in general, any data that interferes with the propagation of RF signals.
The radio coverage of the said primary user’s network to be protected shall be protected from co-channel radio transmissions of the secondary user's radio base stations located within 40 km of any point of the said protected zone, and where the protection level against interference of any point of the said protected zone is set to -90 dBm / MHz protection level.
The standardized information elements composing the LSRAI (LSA Spectrum Resource Availability Information) relevant to the method are defined as follows:
LSRAI contains one or more geographical zones corresponding to the radio coverage of the said primary user’s network to be protected calculated by the steps above,
each zone of LSRAI is of type "protection",
each zone contains:
o a contour in the form of a polygon, and
o the frequencies used by the said primary user’s network on the said zone, and
o the protection level of the said zone set at -90 dBm / MHz, and
o the time interval(s) during the said zone is to be protected.
Figures 4 and 5 illustrate the method of the present invention.
Figure 4 shows the example of a state of the art of LSA architecture to which a tactical mobile radio network has been added as a primary user.
The radio environment maps (REM)s in Figure 4 represent a deployment option where the REM function for calculating the radio coverage of the network newly deployed by the primary user and to be protected is hosted in the network of the primary user and the REM function for validating the radio coverage to protect according to the rights of the primary user for pre-empting the access to spectrum on the said coverage area is hosted in the LR.
Another deployment option not shown in Figure 4 is to group the REM function for calculating the radio coverage of the network newly deployed by the primary user and to be protected and the REM function for validating the radio coverage to be protected according to the rights of the primary user for pre-empting the spectrum on the said coverage area in the LR.
Another deployment option not shown in Figure 4 is to have the REM function for calculating the radio coverage of the network newly deployed by the primary user and to be protected distributed on every radio base stations deployed by the primary user; in this case, the REM function for validating the radio coverage to be protected and hosted in the LR will have the task of making the union of the individual radio coverage as defined in step 2.b. above to form the overall radio coverage to be protected that corresponds to the entire deployed network of the primary user.

Claims

Claims CLAIM 1 This method for creating LSRAI information (LSA Spectrum Resource Availability Information) is characterized by the following steps:
1. acquisition, preferably automatically, of the data of the deployed radio base stations, referred as eNBs in the case of a 3 GPP / LTE network, of the primary user consisting of the following information: a. base station transmission powers, and
b. the parameters of the following base station antenna elements: latitude, longitude, antenna height, azimuth, down tilt, horizontal and vertical radiation patterns, if any, beamforming parameters, and
c. the access priority parameters of the cells associated with the radio base stations namely "Allocation and Retention Priority" (ARP), the "Access Class Barring" (ACB), and d. neighbouring cell lists, and
e. the hand-over parameters of the cells associated with the radio base stations, and f. the identities of the radio base stations and associated cells.
2. from the data collected in the previous step, define a contour of the radio coverage to be protected (or protection zone) of the said primary user’s network as follows:
a. for each radio base station of the said primary user’s network:
i. it is defined 360 radials separated by one degree where each radial corresponds to the line extending up to 40 km from the location of the said base station, and
ii. along each radial, the received signal strength from the said radio base station is calculated at points evenly spaced of 30 meters using RF propagation models, and iii. along each radial, a vertex is defined at the distance corresponding to the received signal strength equal or close to -106 dBm / MHz, and
iv. a first contour is defined by connecting the 360 vertices, and
v. the contour is smoothed using a "Hamming" filter of order 15, and b. once all contours have been defined corresponding of all radio base stations of the said primary user’s network, the union of all the contours is defined; this union corresponds to the overall contour of the radio coverage of the said primary user’s network to be protected; the result of the union may be disjoint contours when individual contour limits do not overlap.
3. the radio coverage to be protected of the said primary user’s network is then checked against the rights of the primary user, as recorded in the“LSA Repository” (LR), for pre-empting the access to spectrum, and
4. the radio coverage of the said primary user’s network to be protected is finally formatted as standardized information elements composing the LSRAI (LSA Spectrum Resource Availability Information) as defined by ETSI TS 103 379 and then sent via the LSA-1 interface to LC;
CLAIM 2
The method according to claim 1 characterized in that the said received signal strength is calculated using RF propagation models, digital terrain models, land cover, digital building models, climate models, soil refractivity, air permittivity, and in general, any data that interferes with the propagation of RF signals. CLAIM 3
The method according to claim 1 characterized in that the said radio coverage of the said primary user’s network to be protected shall be protected from co-channel radio transmissions of the secondary user's radio base stations located within 40 km of any point of the said protected zone, and where the protection level against interference of any point of the said protected zone is set to -90 dBm / MHz protection level.
CLAIM 4
The method according to claim 1 characterized in that the said standardized information elements composing the LSRAI (LSA Spectrum Resource Availability Information) are defined as follows:
LSRAI contains one or more geographical zones corresponding to the radio coverage of the said primary user’s network to be protected,
each zone of LSRAI is of type "protection",
each zone contains:
o a contour in the form of a polygon, and
o the frequencies used by the said primary user’s network on the said zone, and
o the protection level of the said zone set at -90 dBm / MHz, and
o the time interval(s) during the said zone is to be protected.
CLAIM 5
The method according to claim 1 characterized in the state of the art Licensed Shared Access (LSA) architecture and that the radio environment map (REM) function for calculating the radio coverage of the network newly deployed by the primary user and to be protected is hosted in the network of the primary user and the REM function for validating the radio coverage to protect according to the rights of the primary user for pre-empting the access to spectrum on the said coverage area is hosted in the LSA repository (LR), or alternatively that the REM function for calculating the radio coverage of the network newly deployed by the primary user and to be protected and the REM function for validating the radio coverage to be protected according to the rights of the primary user for pre-empting the spectrum on the said coverage area are group in the LSA repository (LR), or alternatively that the REM function for calculating the radio coverage of the network newly deployed by the primary user and to be protected id distributed on every radio base stations deployed by the primary user and the REM function for validating the radio coverage to be protected and hosted in the LSA repository (LR) is calculating the union of the individual radio coverage to form the overall radio coverage to be protected that corresponds to the entire deployed network of the primary user.
EP19721294.7A 2018-05-22 2019-05-06 A method for creating lsrai information (lsa spectrum resource availability information) Withdrawn EP3797537A1 (en)

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FR1800502A FR3081664B1 (en) 2018-05-22 2018-05-22 A METHOD FOR CREATING LSRAI INFORMATION (LSA SPECTRUM RESOURCE AVAILABILITY INFORMATION)
PCT/EP2019/061522 WO2019223986A1 (en) 2018-05-22 2019-05-06 A method for creating lsrai information (lsa spectrum resource availability information)

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FR3020529B1 (en) 2014-04-23 2017-12-29 Red Tech METHOD FOR INDENTIFYING INTERFERENCE SOURCES OF ONE OR MORE DRY SECONDARY USERS USING ONE OR MORE C CONTROLLERS, A BDD DATABASE AND SRF RF SENSORS
FR3020530B1 (en) 2014-04-25 2016-04-15 Red Tech METHOD FOR THE DYNAMIC SELECTION OF RADIO WAVE PROPAGATION MODELS FOR THE CALCULATION OF RADIO INTERFERENCES EMITTED BY BROKERS (TRANSMITTERS) ON VICTIMS (RECEIVERS)
EP3579599B1 (en) * 2014-06-16 2021-10-27 Telefonaktiebolaget LM Ericsson (Publ) Technique for assigning spectral resources in a cellular network
FR3039961B1 (en) 2015-08-05 2017-10-20 Red Tech Sas METHOD OF CALIBRATING A DYNAMIC ACCESS MANAGEMENT SYSTEM AND RADIO SPECTRUM SHARING
US10932138B2 (en) * 2016-04-07 2021-02-23 Federated Wireless, Inc. Spectrum access optimization for self organizing networks

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