• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    Method for optimizing spectrum access and utilization, in a multi-tiered frequency sharing environment, by CB SD radio base stations providing the Citizens Broadband Radio Service (CBRS) as defined by the FCC (Federal Communications Commission).
    公开号:FR3064441A1
    申请号:FR1700296
    申请日:2017-03-22
    公开日:2018-09-28
    发明作者:Christophe LE THIERRY D'ENNEQUIN；Pierre Jean Muller
    申请人:Red Technologies SAS；
    IPC主号:
    专利说明:

    (57) Method for optimizing spectrum access and use, in a multi-tier frequency sharing environment, by CB SD radio base stations providing the Citizens Broadband Radio Service (CBRS) as defined by the FCC (Federal Communications Commission).
    CBSD 1 CBSD 2 C8SD 3
    FR 3 064 441 - A1
    Page 1
    DESCRIPTION OF THE FIGURES
    Figure 1 shows a view of contextual spectrum coordination according to the state of the art.
    Figure 2 shows an example of equivalence between MAC profiles associated with different radio access technologies.
    Figure 3 shows a view of the architecture of the Citizens Broadband Radio Service (CBRS) according to the state of the art.
    Figure 4 shows a view of the architecture of the enhanced CBRS service in accordance with the present invention.
    FIG. 5 shows an example of dynamic configuration of CBSDs (Citizens Broadband Radio Service Devices) according to the use of the spectrum, in accordance with the present invention and within the framework of the CBRS service.
    FIG. 6 shows another example of dynamic configuration of CBSDs according to the use of the spectrum, in accordance with the present invention and within the framework of the CBRS service.
    FIG. 7 shows an example of dynamic configuration of CBSDs according to the nature of the users authorized to connect to CBSDs, in accordance with the present invention and within the framework of the CBRS service.
    FIG. 8 shows an example of dynamic configuration of CBSDs following the dynamic activation of a PPA (PAL Protection Area) in accordance with the present invention and within the framework of the CBRS service.
    DESCRIPTION OF THE INVENTION
    In the text which follows the term "user" should be understood as generally being an entity or an organization which operates one or more radio base stations constituting one or more radio access networks.
    In the text which follows the term "user" should be understood as generally being a person or a machine connected to the user's network via a radio terminal.
    State of the art on spectrum sharing
    In order to maximize access and use of the spectrum, new regulatory models enabling the spectrum to be shared between different users have been defined.
    In some of these models, licenses for spectrum access and use may be associated with services, prerogatives, priorities and or contexts defining under what circumstances these licenses apply. These licenses can allow users to have exclusive access to spectrum, or allow users to share spectrum with other users.
    When a user has a license authorizing exclusive access to the spectrum, users who may interfere with that user and whose license indicates a lower priority are not authorized to use the spectrum at the same time, on the same frequency and on a same frequency. same geographic area.
    Page 2
    When multiple users have licenses authorizing shared access to the spectrum on the same frequency, in a given geographical area, it is possible to adjust the terms of access and use of the spectrum, i.e. the amount of spectrum allocated to these users by selecting and configuring a MAC profile (as described in the following section) on the base stations and radio terminals associated with these users.
    Figure 1 shows a contextual spectrum management service allowing this type of configuration.
    State of the art on radio environment maps
    A radio environment map (REM), representing a dynamic and real-time radio environment, can be used to aid the decision-making process in many radio applications and systems such as Γ auto-configuration, auto-optimization, l 'self-repair of radio networks, dynamic radio planning, or even dynamic spectrum sharing.
    EMR can be designed as a database containing information on the radio environment (eg, RF signal strength, RF propagation loss, or even RF interference level) in spatial, temporal dimensions and frequency.
    The REM builds the radio environment using information on the topology of the deployed network, the configuration of the radio nodes and field measurements. The radio environment map is then calculated in spatial, temporal and frequency dimensions using advanced radio propagation models.
    The REM can be viewed, for example, using a GIS (Geographic Information System) interface, to show information in spatial, temporal and frequency dimensions.
    State of the art on MAC profiles (Medium Access Control)
    A MAC profile consists of a set of parameters associated with a given MAC protocol and a given radio access technology.
    The value of these parameters can have an impact on the access and use of the spectrum and on the efficiency of the protocol, such as in relation to the bit rate and / or the time to access the medium. MAC profiles for a given radio access technology can therefore be classified according to their level of efficiency (for example according to the speed and / or time to access the medium), or according to their level of occupancy. of the spectrum.
    All or a subset of the following parameters can be associated with a MAC profile:
    an inter-frame interval, indicating the time for which a device must wait after a transmission before initiating a new transmission, a time-out parameter, known as a “backoff timer”, indicating the duration for which a device must wait after the failure when trying to access the medium before trying to access the medium again, a UL frame duration ("uplink"), a DL frame duration ("downlink"), a number of UL subframes per frame. This parameter can apply, for example, to a MAC profile configured on a radio base station, and indicates, for a given frame, how many subframes are allocated to UL transmissions.
    Page 3 a number of DL subframes per frame. This parameter can apply, for example, to a MAC profile configured on a radio base station, and indicates, for a given frame, how many subframes are allocated to DL transmissions.
    a number of interleaves over which the bandwidth is divided. Increasing the number of interleaves spreads the transmission power across the spectrum, thereby reducing spectral density.
    Figure 2 shows an example of equivalence between MAC profiles for two radio access technologies.
    State of the art on the CBRS (Citizens Broadband Radio Service)
    The CBRS is a service defined by the FCC (Federal Communications Commission, document 15 -47) regulatory authority allowing frequency sharing on the 3.5 GHz band between three priority levels or 3 thirds:
    primary users, secondary users PAL (Priority Access Licensees), third-party users GAA (General Authorized Access).
    The Wireless Innovation Forum defines the architecture and protocols for the CBRS service, in accordance with FCC requirements.
    Figure 3 shows the architecture of the CBRS service. A centralized SAS (Spectrum Access System) server controls access to and use of the spectrum of fixed radio base stations called CBSDs (Citizens Broadband Radio Service Devices) connected to this SAS server. These CBSDs can be connected directly to the SAS server (as illustrated by "CBSD 4" in Figure 3) or indirectly through a Proxy Server (SP) called connected to CBSDs.
    SP is also called Domain Proxy (DP) as part of the CBRS service.
    The protocol between the SAS server and CBSDs or between the SAS server and an SP makes it possible to control the frequencies used by the CBSDs for radio transmission and / or reception.
    PAL licenses are associated with geographic areas PPAs (PAL Protection Areas) on which CBSDs can broadcast as PAL users.
    The SAS server knows the location of each CBSD and is able to determine, using the PPA information, whether a CBSD is authorized to broadcast as a PAL user.
    The SAS server determines the authorized frequencies for a PAL user based on the information on the use of the spectrum by the primary users provided by external entities, for example the FCC or the ESC (Environment Sensor Capability) network, connected to the server. SAS.
    The SAS server determines the authorized frequencies for a GAA user based on the information on the use of the spectrum by the primary users provided by external entities, for example the FCC or the ESC network, connected to the SAS server, as well as by PAL users connected to this SAS server or connected to other SAS servers.
    Several radio access technologies can be used by CBSDs to transmit (for example, LTE-TDD, MulteFire, LTE-U).
    Page 4
    The CxC coexistence control function inside the SAS allows you to manage the coexistence and / or synchronization between CBSDs using identical or different radio access technologies. For example, in the same geographic area, part of the frequencies can be reserved exclusively for a type of radio technology such as LTE-TDD.
    When CBSDs of PAL users are deployed and authorized to transmit on a given frequency, CBSDs of GAA users deployed in the vicinity of PAL users are not authorized to transmit on this frequency. In fact, the FCC specifies that at any point in a PAL user's PPA area, the aggregation of the signal from the CBSDs of GAA users must not exceed 80 dBm on a 10 MHz channel.
    This results in spectrum underutilization when spectrum usage by CBSDs of PAL secondary users is low. Furthermore, within the same category of CBSD (PAL users or GAA users), no mechanism is defined allowing to vary, dynamically and in real time, the use of the spectrum according to the needs of the users connected to these CBSDs.
    So, for example, if in the same geographic area, some CBSDs are used for priority emergency services, while other CBSDs are used for mobile Internet services, the interference generated by CBSDs will be similar. As a result, the quality of service provided by the two types of CBSD will be similar. The only way to increase the quality of service for a subset of CBSDs is therefore at present to switch off the other CBSDs, or else to authorize them to transmit only on other frequencies according to the principle of exclusion.
    The present invention overcomes these limitations by allowing a centralized spectrum management server (the SAS server in the context of the CBRS service) or alternatively to a proxy server (the Domain Proxy in the context of the CBRS service) to optimize access. and the use of the radio spectrum by dynamically selecting, for each radio base station (for example a CBSD, in the context of the CBRS service) the most suitable MAC profile according to the MAC profiles supported by radio base station, the license of the user of said radio base station and of additional background information.
    Enhanced CBRS architecture
    The centralized spectrum management server configures each CBSD radio base station according to the following steps (step ii is described in more detail in the following examples):
    i. identification of the frequencies authorized for said radio base station, ii. identification, for each frequency identified in i, of the most efficient MAC profile authorized, according to:
    of the radio access technology or technologies used by said radio base station, of the MAC profiles supported by said radio base station, of the license of the user of said radio base station, of the estimation of the radio propagation and resulting interference from said radio base station on neighboring radio base stations of the same user or different users, MAC profiles used by neighboring radio base stations of the same user or different users, of the effective rate d use of the spectrum by said radio base station and by the neighboring radio base stations, of additional context information.
    iii. sending by the centralized spectrum management server of the authorized frequencies as well as the MAC profile identified in ii., to said radio base station.
    Page 5
    FIG. 4 shows a view of the architecture of the Citizens Broadband Radio Service (CBRS) enriched in accordance with the present invention.
    The exchanges illustrated in FIG. 4 between the SAS server and an SP can also be carried out directly between the SAS server and a CBSD.
    The elements in bold in FIG. 4 highlight certain inventive aspects of the present invention in relation to the state of the art.
    The SAS server has information on the MAC profiles supported by each CBSD. This information can be provided to the SAS server by the CBSDs when they register with the SAS server with the message "RegistrationRequest", or else provided beforehand by an external server to the SAS server, belonging to the network of the CBSD user. The message “RegistrationRequest” is standardized by the Wireless Innovation Forum.
    In step 1 of Figure 4, a CBSD sends the message "Spectrum request" to the SAS server, through the SP. This "Spectrum request" message can correspond to a request for authorization to transmit on the frequencies indicated as a parameter, as defined by the "Grant Request" message specified by the Wireless Innovation Forum.
    On receipt of this request, the SAS server determines the frequencies available for the CBSD at the origin of the request, as well as the authorized MAC profile, according to the license of the user of said CBSD, of CBSDs deployed nearby. of this CBSD, as well as the use of the spectrum by primary users and additional context information, for example, on the specific context of the user of said CBSD at the time of the request and on the geographic area where said CBSD is deployed.
    The SAS server then sends the “Response to spectrum request” message, indicating the authorized frequency or frequencies, as well as the authorized MAC profile. This “Response to spectrum request” message can correspond to the “Grant Response” message, transmitted in response to the “Grant Request” message, and specified by the Wireless Innovation Forum.
    On receipt of this message, the CBSD is configured, by the SP if it is present or directly by itself, with the MAC profile received and with the frequency or frequencies on which it is authorized to transmit.
    In an alternative, several MAC profiles could be provided by the SAS server in the “Response to spectrum request” message, for a given CBSD, each MAC profile being associated with one or more frequencies on which the CBSD is authorized to operate.
    Furthermore, the centralized spectrum management server (either the SAS server in the context of the CBRS service) can at any time modify the MAC profile of a given radio base station (or a CBSD in the context of the CBRS service) by function of a modification of the context specific to the user of said CBSD and immediately transmit to it, directly or via a proxy server, the MAC profile in a message (that is, in the context of the CBRS service, the message "Heartbeat Response" in response to the “Heartbeat Request” message sent by said CBSD).
    Examples of CBSD dynamic reconfiguration
    FIGS. 5 and FIG. 6 show a deployment of CBSDs as well as the configuration of their MAC profile, in accordance with the present invention.
    CBSDs 1, 4, 5, 6 and 7 are users belonging to the third third party GAA.
    Page 6
    The dotted area indicates the PPA area on which the CBSDs of PAL secondary users (i.e., CBSDs 2 and 3 in this example) have priority access to CBSDs belonging to the third third party GAA. The deployment of CBSDs is identical in Figure 5 and Figure 6. However, in Figure 6, the use of the spectrum of CBSDs 2 and 3 is assumed to be low, while in Figure 5 the use of the spectrum of CBSDs 2 and 3 is assumed to be high.
    Information on the effective spectrum usage rate of a CBSD can for example be sent at regular intervals to the SAS server via the "HeartbeatRequest" message by said CBSD.
    Spectrum usage thresholds can be preconfigured in the SAS server to determine whether spectrum usage is low or high.
    Several types of radio access technologies coexist in this geographical area represented in Figures 5 and 6:
    CBSDs 1 and 4 use LTE TDD technology, CBSDs 2, 3, 5, 6 and 7 use MulteFire technology.
    When spectrum usage by CBSDs of PAL secondary users (CBSD 2 and CBSD 3 in this example) is high, as shown in Figure 5, CBSD 1, 4, 5, 6 and 7 are not allowed by the SAS server to be sent, in order not to create interference on the dotted PPA area belonging to the secondary users.
    On the other hand, when the use of the spectrum by CBSDs of the secondary users PAE (CBSD 2 and CBSD 3 in this example) is low, as illustrated in FIG. 6, the CBSDs 5, 6, and 7 of the users of the third proud GAA are authorized to issue.
    In this example illustrated in Figure 6, the MAC profile configured by the SAS server for CBSDs of the third GAA tier is lower (MAC Profile MulteFirel) than that configured on CBSDs of PAL secondary users (MAC Profile MulteFire_2). The SAS server adjusts the value of the MAC profile configured for the CBSDs of third-tier GAA users, for example in an “Eleartbeat Response” message in response to a “Heartbeat Request” message, so that the needs of the CBSDs of secondary users PAL can be guaranteed.
    In addition, before authorizing the CBSDs of third-party GAA users to generate interference on an area associated with PAL secondary users, the SAS server ensures that the radio access technologies used by third-party GAA users and PAL secondary users can coexist without one of the radio technologies preventing the other from operating in the same geographic area.
    Thus, in Figure 6, the CBSDs of third-party GAA users using LTE TDD radio access technology are not allowed to transmit, as their operation is likely to generate interference on a continuous basis with PAL secondary users.
    Thus, CBSDs belonging to the third third GAA can be authorized to transmit, even when these are installed near a PPA area operated by a PAL secondary user, without impact on the quality of service provided by CBSDs belonging to users secondary PAL.
    A radio base station is therefore authorized to transmit beyond the maximum authorized interference threshold which has been previously defined to protect one or more neighboring radio base stations when the following conditions are met:
    Page 7
    i. the effective rate of spectrum use by neighboring radio base stations is lower than the reference use which served to define the maximum interference threshold authorized for said radio base station, ii. the radio access technology used by said radio base station can coexist, in the same geographical area, with the radio technology used by neighboring base stations.
    Reconfiguration of CBSDs according to priorities
    FIG. 7 shows the evolution of the configuration of the MAC profile over a given geographic area, and over a given frequency, as a function of information on the context, for example, on the fact that users belonging to a priority service (eg , police, fire, military) have just connected to these CBSDs, or the user of these CBSDs decides to configure them in "priority" mode.
    All the CBSDs shown in the figure belong to the same category of users (e.g., PAL secondary users or third-party GAA users). However, the types of users authorized to connect to these CBSDs are not identical:
    CBSDs prefixed by "SC" are CBSDs to which normal non-priority users are authorized to connect, CBSDs prefixed by "SU" are CBSDs to which users of emergency services are authorized to connect.
    The SAS server has information on the services supported by each CBSD. This information can be provided to the SAS server by the CBSDs when they register with the SAS server with the message "RegistrationRequest", or else provided beforehand by an external server to the SAS server, belonging to the network of the CBSD user. The message “RegistrationRequest” is standardized by the Wireless Innovation Forum.
    On the left side of figure 5, CBSDs 1 to 5 provide a mobile internet service (as illustrated by the prefix "SC" in the figure). No CBSDs takes precedence over the others. The same MAC profile ("MAC Profile 2") is configured on all these CBSDs.
    The right side of Figure 5 shows the deployment and reconfiguration of CBSDs following an emergency. A new station has been installed (CBSD 6), and stations CBSD 3 and CBSD 4 have been requisitioned for emergency services (as illustrated by the prefix "SU" in the figure).
    CBSDs 1 and 2, which may interfere with CBSDs providing a mobile internet service, have been reconfigured by the SAS server with a lower performing MAC profile ("MAC Profile 1"), while CBSDs providing an emergency service have been reconfigured by the SAS server with a more efficient MAC profile ("MAC Profile 3").
    On the other hand, the CBSD 5 is not reconfigured by the SAS server because it has determined that it does not interfere with CBSDs providing an emergency service.
    Users of emergency services thus have access to a higher quantity of spectrum and therefore to a better quality of service than users of mobile internet services.
    Reconfiguration of CBSDs based on PPA activation
    The MAC profile configured on a given CBSD can also be dynamically modified by the SAS server following the activation or deactivation of a PPA on which this CBSD is likely to generate interference.
    Page 8
    Figure 8 shows an example of dynamic configuration of CBSDs following the dynamic activation of a PPA (or "PAL Protection Area").
    The dotted area represents a PPP. When this is inactive (left part of Figure 8), the SAS server does not take into account the presence of this zone when allocating frequencies and when choosing the MAC profile to configure on the CBSDs located at the inside or near this area.
    When this zone is activated, for example when emergency services requisition this zone for an intervention, the SAS server reconfigures the CBSDs located inside or outside this zone but not associated with this zone (CBSDs 1 and 2 in this example) in such a way that said CBSDs do not generate interference on the PPA. In this example, the CBSD 5 located outside this zone remains unchanged because it does not generate interference on the activated zone.
    Page 9
    权利要求:
    Claims (9)
    [1" id="c-fr-0001]
    1) A method for optimizing spectrum access and use, in a multi-tier frequency sharing environment, by CBSD radio base stations providing the Citizens Broadband Radio Service (CBRS) as defined by the FCC (Federal Communications Commission), characterized in that a SAS server connected to said CBSD radio base stations performs, for each CBSD radio base station, the following operations:
    i. identification by said spectrum management server of the frequencies authorized for said radio base station, ii. identification by said spectrum management server, for each frequency identified in i, of the most efficient MAC profile authorized, according to:
    at. of the access radio technology or technologies used by said radio base station,
    b. MAC profiles supported by said radio base station,
    vs. the license of the user of said radio base station,
    d. the estimation of the radio propagation and the resulting interference from said radio base station on neighboring radio base stations of the same user or of different users,
    e. MAC profiles used by neighboring radio base stations of the same user or different users,
    f. the effective rate of spectrum use by said radio base station and by neighboring radio base stations,
    g. additional information associated with the context.
    iii. sending by said centralized spectrum management server of the authorized frequencies as well as the MAC profile identified in ii., to said radio base station.
    [2" id="c-fr-0002]
    2) The method according to claim 1, characterized in that the MAC profiles supported by a CBSD radio base station are sent by said CBSD radio base station at the time of its registration on the SAS server, directly or via a proxy server, in the "RegisterRequest" message.
    [3" id="c-fr-0003]
    3) The method according to claims 1 to 2, characterized in that the SAS server identifies and sends, directly or via a proxy server, the MAC profile selected for a CBSD radio base station in the “Grant Response” message transmitted in response to the "Grant Request" message sent by this CBSD radio base station.
    [4" id="c-fr-0004]
    4) The method according to claims 1 to 3, characterized in that the SAS server modifies the MAC profile of a CBSD radio base station and sends it this MAC profile, directly or via a proxy server, through the message "Heartbeat Response ”in response to the“ Heartbeat Request ”message sent by this CBSD radio base station.
    [5" id="c-fr-0005]
    5) The method according to claims 1 to 4, characterized in that the effective rate of use of the spectrum of a CBSD radio base station is sent at regular intervals to the SAS server in the "HeartbeatRequest" message by this base station CBSD radio, directly or via a proxy server.
    [6" id="c-fr-0006]
    6) The method according to claims 1 to 5, characterized in that the information on the services supported by a CBSD radio base station is sent by this CBSD radio base station at the time of its registration on the SAS server, directly or via a proxy server, in the "RegisterRequest" message.
    Page 10
    [7" id="c-fr-0007]
    7) The method according to claims 1 to 6, characterized in that the MAC profile configured on a CBSD radio base station is dynamically modified by said SAS server to allow a CBSD radio base station to transmit beyond a maximum authorized interference threshold, when the effective rate of spectrum use by CBSD radio base stations neighboring this base station
    5 CBSD radio is lower than the reference use which served to define this maximum interference threshold authorized and that the radio access technology used by said CBSD radio base station can coexist, in the same geographical area, with the radio technology used by neighboring CBSD radio base stations.
    [8" id="c-fr-0008]
    8) The method according to claims 1 to 7, characterized in that the MAC profile configured on a CBSD radio base station is dynamically modified by said SAS server to adapt said base station to a change in quality of service or priority of service required on this CBSD radio base station.
    [9" id="c-fr-0009]
    9) The method according to claims 1 to 8, characterized in that the MAC profile configured on a CBSD radio base station is dynamically modified by said SAS server following activation or
    15 deactivation of a PPA on which this CBSD radio base station is likely to generate interference.
    Page 11
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    同族专利:
    公开号 | 公开日
    EP3603151B1|2020-12-02|
    WO2018172367A1|2018-09-27|
    FR3064441B1|2019-03-22|
    EP3603151A1|2020-02-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2015084959A1|2013-12-04|2015-06-11|MITOLA, Joseph III|Computerized methods and apparatus for spectrum access|
    WO2017030697A1|2015-08-18|2017-02-23|Intel Corporation|Communication device and method for communicating using a frequency range|FR3102030A1|2019-10-11|2021-04-16|Red Technologies|Multi-band spectrum access controller allowing LAA transmission mode|
    US10680769B2|2018-10-01|2020-06-09|Motorola Solutions, Inc.|Interference coordination in communication systems with dynamic spectrum management|
    US10721741B2|2018-10-04|2020-07-21|Motorola Solutions, Inc.|Inter-frequency mobility support for communication systems with dynamic spectrum assignments|
    FR3092460B1|2019-02-05|2021-01-01|Red Tech|Estimation of the risk for a CBSD of being unauthorized to transmit on a channel near an activated DPA|
    US11089602B2|2019-09-12|2021-08-10|Cisco Technology, Inc.|Reducing interference in CBRS networks|
    US20210400680A1|2020-06-17|2021-12-23|Commscope Technologies Llc|Methods and systems for provisioning of parameter data of radios controlled by a spectrum access system|
    FR3112917A1|2020-07-27|2022-01-28|Red Technologies Sas|dynamic PPP contour adjustment|
    法律状态:
    2018-03-02| PLFP| Fee payment|Year of fee payment: 2 |
    2018-09-28| PLSC| Publication of the preliminary search report|Effective date: 20180928 |
    2019-09-11| PLFP| Fee payment|Year of fee payment: 4 |
    2020-06-08| PLFP| Fee payment|Year of fee payment: 5 |
    2022-01-11| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1700296A|FR3064441B1|2017-03-22|2017-03-22|DYNAMIC ADJUSTMENT OF THE USE OF RADIO SPECTRUM BY CBSD RADIO BASE STATIONS|
    FR1700296|2017-03-22|FR1700296A| FR3064441B1|2017-03-22|2017-03-22|DYNAMIC ADJUSTMENT OF THE USE OF RADIO SPECTRUM BY CBSD RADIO BASE STATIONS|
    EP18711353.5A| EP3603151B1|2017-03-22|2018-03-20|Dynamic adjustment of the use of the radio spectrum by cbsd radio base stations|
    PCT/EP2018/057048| WO2018172367A1|2017-03-22|2018-03-20|Dynamic adjustment of the use of the radio spectrum by cbsd radio base stations|
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