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WO2016089274A1 - Procédés pour établir une mesure indiquant la capacité d'utilisation d'une bande de spectre radio, et nœud, système, programme d'ordinateur et produits de programme d'ordinateur correspondant - Google Patents

Procédés pour établir une mesure indiquant la capacité d'utilisation d'une bande de spectre radio, et nœud, système, programme d'ordinateur et produits de programme d'ordinateur correspondant Download PDF

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Publication number
WO2016089274A1
WO2016089274A1 PCT/SE2015/050337 SE2015050337W WO2016089274A1 WO 2016089274 A1 WO2016089274 A1 WO 2016089274A1 SE 2015050337 W SE2015050337 W SE 2015050337W WO 2016089274 A1 WO2016089274 A1 WO 2016089274A1
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WIPO (PCT)
Prior art keywords
band
wireless system
usability
node
information
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PCT/SE2015/050337
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English (en)
Inventor
Gen LI
Jonas Kronander
Yngve SELÉN
Tim Irnich
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the technology disclosed herein relates generally to the field of radio access networks, and in particular to assessment of usability of radio spectrum band.
  • a frequency spectrum available for wireless communication may be shared in different ways. There are wireless systems that use only licensed frequency bands, an example of which is current Long Term Evolution (LTE) networks, while other wireless systems may use unlicensed frequency bands. Other forms of shared spectrum comprise licensed shared spectrum (with and without obligation to protect spectrum users having higher priority) and, more recently, the concept of Licensed Shared Access. These new approaches of making spectrum available have received strong attention in regulatory discussions over the last couple of years.
  • LTE Long Term Evolution
  • Such dynamic spectrum sharing has to be managed carefully. For instance, the spectrum usage has to be coordinated e.g. so as to ensure that there is indeed spectrum available for each radio access system, and so as to mitigate interference.
  • An object of the present disclosure is to solve or at least alleviate at least one of the above mentioned problems.
  • the object is according to a first aspect achieved by a method for establishing a metric reflecting usability of a first band of a radio spectrum.
  • the method is performed in a node of a first wireless system.
  • the method comprises obtaining information about the first band, the information identifying a frequency range within the radio spectrum and regulatory requirements relating to the first band; obtaining information relating to a current use of the first band by a second wireless system; and establishing the metric reflecting usability of the first band for the first wireless system based on the obtained information about the first band and the obtained information relating to the current use of the first band.
  • the method enables a node, for instance a wireless access node, to assess the quality of various radio spectrum bands in different kinds of spectrum sharing scenarios and situations.
  • the method enables the assessment of usability, e.g. in terms of
  • a node in need of more capacity for serving its users may then determine if a certain radio spectrum band could be used for providing this additional capacity based on the metric reflecting its usability.
  • the object is according to a second aspect achieved by a node of a first wireless system for establishing a metric reflecting usability of a first band of a radio spectrum.
  • the node is configured to: obtain information about the first band, the information identifying a frequency range within the radio spectrum and regulatory requirements relating to the first band; obtain information relating to a current use of the first band by a second wireless system, and establish the metric reflecting usability of the first band for the first wireless system based on the obtained information about the first band and the obtained information relating to the current use of the first band.
  • the object is according to a third aspect achieved by a computer program for a node for establishing a usability metric for a first band of a radio spectrum.
  • the computer program comprises computer program code, which, when executed on at least one processor on the node causes the node to perform the method as above.
  • the object is according to a fourth aspect achieved by a computer program product comprising a computer program as above and a computer readable means on which the computer program is stored.
  • the object is according to a fifth aspect achieved by a method for establishing a metric reflecting usability of a first band of a radio spectrum performed in a system comprising a first wireless system.
  • the method comprises obtaining information about the first band, the information identifying a frequency range within the radio spectrum and regulatory requirements relating to the first band; obtaining
  • the object is according to a sixth aspect achieved by a system for establishing a metric reflecting usability of a first band of a radio spectrum.
  • the system comprises a first wireless system.
  • the system is configured to: obtain information about the first band, the information identifying a frequency range within the radio spectrum and regulatory requirements relating to the first band; obtain information relating to a current use of the first band by a second wireless system; and establish the metric reflecting usability of the first band for the first wireless system based on the obtained information about the first band and the obtained information relating to the current use of the first band.
  • Figure 1 illustrates a millimeter wave wireless system architecture.
  • Figure 2 illustrates a possible exemplary spectrum landscape.
  • Figure 3 illustrates exemplary spectrum sharing scenarios.
  • FIG. 4 illustrates schematically an environment in which embodiments of the present disclosure may be implemented.
  • Figure 5 is a flow chart illustrating a band quality assessment according to the present disclosure.
  • Figure 6 illustrates an example of a spectrum sharing toolbox map.
  • Figure 7 illustrates a flow chart over steps of a method in a node in accordance with the present disclosure.
  • Figure 8 illustrates schematically a node and means for implementing methods of the present disclosure.
  • Figure 9 illustrates a network node comprising function modules/software modules for implementing methods of the present disclosure.
  • Figure 10 illustrates schematically a system for implementing embodiments of the method according to the present disclosure.
  • Figure 11 illustrates a flow chart over steps of a method in a system. Detailed description
  • mmW millimeter-wave
  • Figure 1 is a general illustration of an mmW system 1, showing an architecture comprising a number of nodes deployed in the mmW system 1, wherein each type of node has different functions.
  • first radio access system is used interchangeably with “mmW system”, both referred to by reference numeral 1. It is however again noted that the present disclosure also encompasses other systems than mmW networks for use as the radio access system.
  • a wireless access link is indicated by a dotted line
  • a wireless backhaul link is indicated by a dashed line
  • a wired link is indicated by a solid line.
  • a mobile terminal (MT) 2a, 2b is the served end user node of the mmW system 1.
  • the mobile terminal maybe denoted in different ways, e.g. wireless device, user equipment etc. and may for instance comprise a smart phone or a tablet computer.
  • the MTs 2a, 2b may connect to an access node (AN) 3a, 3b, 3c or to an aggregation node (AgN) 4a, 4b using the mmW radio spectrum range.
  • AN access node
  • AgN aggregation node
  • a first MT 2 a is illustrated as connected to a first AN 3a by means of a wireless access link, which access can be a specific mmW radio access technology or any other access technology supported by the AN 3a, e.g. Bluetooth, Wi-Fi etc.
  • the wireless access link between the first MT 2a and the first AN 3a is indicated by a dotted line.
  • the MTs 2a, 2b may potentially connect to multiple
  • the core component nodes establishing the mmW system 1 are the aggregation node (AgN) 4a, 4b and the access node (AN) 3a, 3b, 3c. They may have some functions in common, for instance, serving the mobile terminals 2a, 2b by wireless access links, and connecting other ANs 3a, 3b, 3c or AgNs 4a, 4b via wireless backhaul link.
  • the latter is illustrated in figure 1 by the first access node 3a connecting to the first AgN 4a through a second AN 3b.
  • the wireless backhaul links are illustrated in the figure 1 by dashed lines.
  • a difference between the AN 3a, 3b, 3c and the AgN 4a, 4b is that the AgN 4a, 4b has a "direct” connection to a core network 5a, 5b, while the ANs 3a, 3b, 3c have not.
  • “Direct” here is used in the sense that the node does not have to go through other ANs or AgNs.
  • Such direct connection to a core network 5a is typically wired, although it may be a wireless connection.
  • the AgNs 4a, 4b are directly connected to the core network 5a in the sense that they do not have to go over other ANs in the mmW system 1.
  • the core network 5a may for instance be a core network of a telecommunication network, or the Internet 5a.
  • the ANs 3a, 3b, 3c may be connected via wireless backhaul links over other ANs 3a, 3b, 3c and/or AgNs 4a, 4b, in the following denoted wireless self -backhaul, to the core network 5a i.e., they do not have a direct connection to the core network 5a as described above.
  • the core network 5a provides various services to the users of the mmW system 1 and may comprise various nodes such as authentication nodes, gateways to other networks (e.g. Internet), operation support systems, databases etc.
  • nodes such as authentication nodes, gateways to other networks (e.g. Internet), operation support systems, databases etc.
  • the AgN 4a, 4b is connected to the core network 5a via a local network 5b, which may for instance comprise an Ethernet.
  • a local network 5b which may for instance comprise an Ethernet.
  • Each AN 3a, 3b, 3c should find a route comprising one or multiple wireless backhaul links, typically to the nearest AgN 4 and thereby become connected to the core network 5a.
  • a particular AgN 4a, 4b may have a cluster of ANs 3a, 3b, 3c to be connected via wireless self -backhaul links to the core network 5a and the particular AgN 4a, 4b may also have all the functions of the AN 3a, 3b, 3c as well. The latter is illustrated by the first AgN 4a serving the second MT 2b over a wireless link. It is also noted that two AgNs 4a, 4b may be
  • the present disclosure enables the use of two or more bands in a wireless system.
  • the present disclosure provides a method for assessing level of performance for a group of potentially available spectrum bands.
  • radio spectrum bands also denoted simply "band” herein
  • a band in particular a frequency band, is a section of a spectrum, in particular radio spectrum, and comprises a range of frequencies (or equivalently a range of wavelengths).
  • the radio spectrum maybe divided into a number of frequency bands.
  • an optimal choice of spectrum band for a node in the first radio access system 1 is dependent on time and location. This requires accessibility to radio spectrum bands both from a regulatory perspective, i.e. that the first radio access system 1 is allowed to access different radio spectrum bands, and from a technical perspective, i.e. that the different nodes of the first radio access system 1 are technically capable of accessing the different radio spectrum bands.
  • Figure 2 illustrates an example of an envisioned radio spectrum landscape. Radio spectrum opportunities exist in multiple bands 11, 12, 13, 14, 15 and under diverse regulatory approaches, requiring a multitude of different sharing capabilities from the first radio access system 1 that aim to leverage on this flexibility.
  • the first radio access system 1 is able to access primary licensed bands 13, 15, as well as other bands 11, 12 in a Licensed Shared Access (LSA) fashion, or unlicensed bands 14. There are thus multiple bands with different authorization models, for instance spectrum categories such as shared bands and unlicensed bands.
  • LSA Licensed Shared Access
  • Figure 2 exemplifies five bands 11, 12, 13, 14, 15.
  • a conceivable choice maybe to go with the primary licensed shared bands 13, 15 for reliability, but local interference situations could make it more beneficial for some nodes to use other bands 11, 13, 14 with other regulatory frameworks.
  • a first band 11 may be of LSA type and currently be assigned to an incumbent (non-mobile) user, such as to military services.
  • a second band 12 may also be of LSA type and currently be assigned to an incumbent use for fixed links.
  • a third band 13 and a fifth band 15 are of primary licensed share type, and a fourth band 14 is of unlicensed type, e.g. having
  • first band 11 comprises the range from 36 to 37 GHz
  • second band 12 from 40.5 to 43.5 GHz
  • third band 13 from 55, 78 to 54 GHz
  • fourth band 14 from 57 to 64 GHz
  • fifth band 64 to 66 GHz is also indicated in figure 2 along the horizontal axis: first band 11 comprises the range from 36 to 37 GHz, second band 12 from 40.5 to 43.5 GHz, the third band 13 from 55, 78 to 54 GHz, the fourth band 14 from 57 to 64 GHz and the fifth band 64 to 66 GHz. It is noted that these specific numerical examples are provided purely for illustration and do not necessarily represent current frequency allocations.
  • a spectrum sharing toolbox for e.g. the first radio access system 1 is described.
  • a number of spectrum sharing "tools" have been identified that will enable the first radio access system 1 to operate in a range of potentially relevant spectrum sharing scenarios.
  • one particular spectrum sharing tool can be sufficient to enable a certain scenario alone, in some other instances a combination of tools may be required. For the latter case there may be multiple different combinations that may enable a given scenario.
  • Figure 3 illustrates a non-limiting example of a radio access spectrum sharing toolbox 20, with mappings to relevant sharing scenarios 26, 27, 28, 29 and regulatory frameworks 31, 32, 33.
  • solid arrows indicate a "required” relation, for instance required tools or scenarios which are necessary parts of a regulatory framework, whereas dotted arrows indicate "optional” or "possible” relations.
  • the illustrated sharing scenarios comprise: limited spectrum pool 26, which is a horizontal type of coexistence, i.e. wherein users of the band have same right to use the band; mutual renting 27, which is also a horizontal type of coexistence; a vertical type of coexistence 28, wherein should such band be used by a node, then the users of this node would become secondary users (having lower priority to the band); and finally unlicensed horizontal coexistence 29, wherein the band is unlicensed and may be used by any user all given same priority.
  • the spectrum sharing toolbox 20 may for instance comprise:
  • a static spectrum partitioning agreement may result in low spectrum utilization efficiency, for instance under frequent network load variations, load asymmetry between operators or in situations wherein networks are well isolated from each other.
  • Coordination protocols aim to take advantage of these situations to increase efficiency of the spectrum usage. Such protocols are essentially methods to enable spectrum sharing between resource-compatible networks that implement the same coordination protocol.
  • a coordination protocol requires a logical connection between the different networks to enable spectrum utilization negotiations. Such logical connection may have different physical realizations, e.g. over-the-air, via a core network, etc.
  • Coordination protocols are expected to be used not only between networks having equal access rights on a particular piece of spectrum, e.g. to a limited spectrum pool under primary user and LSA modes as well as for unlicensed horizontal coexistence, but also between networks with unequal access rights; e.g. in a mutual renting scenario.
  • the amount of information exchanged between the sharing networks may have to be limited, since network operators may be reluctant to reveal business-related information to competitors.
  • Spectrum broker support 22 to allow a more technology-neutral alternative for tightly coordinated sharing.
  • a spectrum broker is responsible for deciding how resources should be shared between systems having the same regulatory priority, and the spectrum broker support 22 may connect to such spectrum broker.
  • a spectrum broker protocol maybe implemented in a horizontal spectrum management entity. In one particular location, spectrum availability information provided by the spectrum broker is exclusive, i.e. particular resources are assigned to one network only. It is the responsibility of the spectrum broker (e.g. a horizontal spectrum management entity) to decide on spatial spectrum reuse, i.e. at which distance the same resource can be assigned to another spectrum user. The process of deciding about resource allocation is based on a certain policy, which may include negotiation or bidding processes managed by the spectrum broker.
  • the spectrum broker may communicate the results of such processes to the spectrum broker support 22 functionality.
  • spectrum broker support 22 functions from several systems may interact with the spectrum broker.
  • One function of the spectrum broker support 22 allows the system 1 to operate in bands managed by a spectrum broker.
  • Such functionality comprise e.g., communication interfaces to the broker, support for bidding procedures, and to allow the system 1 to adopt its operation to instructions issued by the spectrum broker.
  • Detect-and-avoid mechanisms 23 such as Dynamic Frequency Selection (DFS) or Dynamic Channel Selection (DCS) which may be used either as a simple mechanism for low-granularity spectrum sharing or as an initial step of selecting the most favorable band before other sharing techniques are applied within that band.
  • DFS Dynamic Frequency Selection
  • DCS Dynamic Channel Selection
  • Geo-location database (GLDB) support 24 in order to enable scenarios where this is mandated by the regulator for primary user protection.
  • the GLDB may be seen as a centralized solution for vertical sharing. It enables use of spectrum resources while ensuring that users of higher regulatory priority remain unaffected. This applies both in unlicensed and LSA modes. Spectrum availability information provided by the GLDB does not take horizontal sharing into account, i.e., the same spectrum resources are marked available for all secondary users. Hence the GLDB needs to be complemented with an additional mechanism for horizontal resource distribution: the GLDB support 24.
  • Such additional mechanism may comprise applying of a dynamic horizontal sharing mechanism, or a simpler mechanism such as assigning fixed sub-bands.
  • For the dynamic sharing case there might be a preference for a horizontal spectrum management solution since it may then be implemented in the same physical node as the GLDB.
  • a spectrum broker as well as GLDB may be centralized entities, which the spectrum broker support 22 and the GLDB support 24,
  • Wi-Fi coexistence mode 25 in order to enable co-channel operation with Wi-Fi in unlicensed bands while maintaining reasonable opportunities for the Wi-Fi-type systems.
  • Wi-Fi coexistence mode 25 refers to a set of enablers making it possible to use the same frequencies as is used by Wi-Fi, while maintaining appropriate spectrum access opportunity for Wi-Fi.
  • Such Wi-Fi sharing mode solution may utilize available knowledge on Wi-Fi system behavior to adapt the behavior of the system 1.
  • a simple example of a Wi-Fi coexistence mode between LTE and Wi-Fi is to leave optional silent periods in LTE, during which Wi-Fi systems may operate without co- channel interference caused from the LTE system. The fraction of time used for silent periods can dynamically be adjusted depending on the estimated congestion level of the spectrum. Such muting maybe implemented in different ways.
  • One alternative is to use a listen-before-talk approach that allows Wi-Fi systems to gain channel access.
  • FIG. 4 illustrates schematically an environment in which embodiments of the present disclosure maybe implemented.
  • a system 100 is illustrated comprising a first wireless system 1, a second wireless system 10, a core network 5a and local networks 5b.
  • the system 100 may further comprise clusters of networked servers, sometimes denoted “cloud”, indicated generally by reference numeral 5c in figure 4.
  • the cluster of networked servers may comprise the Internet.
  • the system 100 may comprise all of the mentioned parts or only some thereof.
  • Figure 4 thus illustrates the first radio access system 1, using the same reference numeral as used in figure 1 for corresponding entities, and illustrating additional logical entities overlaid to the physical mmW system architecture of figure 1.
  • the additional entities comprise spectrum
  • SMS spectrum management server
  • GLDB geo-location database
  • the GLDB 8 may for instance store and provide information of available radio spectrum bands. It may comprise regulatory information on each radio spectrum band, type of radio spectrum band (e.g. LSA, unlicensed), limitations that may exist on particular radio spectrum bands, such as e.g. transmission power limitations.
  • type of radio spectrum band e.g. LSA, unlicensed
  • limitations that may exist on particular radio spectrum bands, such as e.g. transmission power limitations.
  • the spectrum management client (SMaC) 7a, 7b, 7c, 7d, ye is a basic functional unit for spectrum sharing according to an aspect of the present disclosure and may be located in each AN 3a, 3b, 3c and AgN 4a, 4b.
  • the SMaC 7a, 7b, 7c, 7d, ye may be an integrated function of one or more of the AN 3a, 3b, 3c and AgN 4a, 4b, or the SMaC 7a, 7b, 7c, 7d, ye maybe a separate node interconnected with the ANs 3a, 3b, 3c and AgNs 4a, 4b.
  • the ANs should comprise means for operating on different types of radio spectrum bands.
  • the spectrum management server (SMaS) 6 is an optional centralized assisting functionality unit for spectrum sharing. It may provide support functions to help the operation of certain spectrum sharing tools, e.g. GLDB support (reference numeral 24 of figure 3).
  • the GLDB support 24 may connect to the GLDB 8.
  • the mobile terminals, MT 2a, 2b, the ANs 3a, 3b, 3c and the AgNs 4a, 4b are able to operate on multiple types of radio spectrum bands (licensed, licensed shared or unlicensed), which may result in different sharing situations.
  • the present disclosure is applicable to such wireless devices (MT 2a, 2b) ANs 3a, 3b, 3c and the AgNs 4a, 4b.
  • the functions presented herein may be provided in a distributed fashion or in a single node (separate or integrated with a node of the mmW system 1). That is, one entity maybe adapted to handle a first function, another entity a second function etc.
  • the various embodiments of the methods of the present disclosure may likewise be performed by distributed means, e.g. by processors of different nodes of the mmW system 1.
  • the system 1 may comprise the earlier described spectrum sharing toolbox 20.
  • the spectrum sharing toolbox 20 is illustrated as a separate entity at reference numeral 20, but in various embodiments the functionality of the spectrum sharing toolbox 20 or parts of the functionality thereof maybe implemented in existing nodes of the system 1.
  • the spectrum sharing toolbox 20 comprising all or some of the tools 21, 22, 23, 24, 25 may for instance be implemented in the SMaS 6.
  • the tools 21, 22, 23, 24, 25 of the spectrum sharing toolbox 20 are implemented within the system 1, and in particular in one or more nodes thereof.
  • some of the tools 21, 22, 23, 24, 25 are implemented in the system 1 while others are implemented centrally and thereby being a tool accessible by the system 1 (nodes thereof) as well as other, similar systems, e.g. a second wireless system 10.
  • all tools are implemented centrally.
  • Figure 4 also schematically illustrates a second wireless system 10, which may comprise any type of wireless system, e.g. another mmW system 10 comprising any number of access nodes, in the figure illustrated by a single wireless access node 18.
  • a second wireless system 10 may comprise any type of wireless system, e.g. another mmW system 10 comprising any number of access nodes, in the figure illustrated by a single wireless access node 18.
  • the method comprises one or more of the following steps:
  • Radio spectrum band type licensed, LSA, unlicensed or any of their sub-scenarios (e.g. vertical coexistence). It is noted that only a specifically requested band maybe checked, i.e. not every band need to be checked. Optionally other coexisting systems in the band may be identified according to e.g. a spectrum information database (compare box 52 of figure 5 and related description).
  • step 2 Determining, based on results of step 1, which spectrum sharing scenario(s) the first radio access system 1 will face in the available radio spectrum bands (compare box 53 of figure 5 and related description).
  • step 3 activating of information collection module of one or multiple needed spectrum sharing tools based on results of step 2. This maybe a mandatory step for some band types while it may be an optional step or not necessary/ applicable at all for other band types (compare box 54 of figure 5 and related description).
  • Radio spectrum band quality information to relevant entities which request to assess the quality of this radio spectrum band.
  • relevant entities may for instance comprise (MAC), radio resource management (RRM), routing, etc. (compare box 56 of figure 5 and related description).
  • the above method may be triggered by a request to assess one particular band by other entities (compare box 51 of figure 5 and related description).
  • the request may for instance be triggered by the following situations:
  • Figure 5 is a flow chart illustrating a procedure for radio spectrum band quality assessment.
  • a procedure 50 for band quality assessment is described with reference to figure 5.
  • the procedure 50 maybe performed for instance in the first SMaC 7a for the first AN 3a requesting the band quality assessment (this situation is used as example in the following) of the first radio access system 1.
  • band is used instead of "radio spectrum band”.
  • Step 1 Trigger for band quality assessment
  • the band quality assessment procedure 50 may be initiated by a request (box 51 of figure 5) for band or channel availability check.
  • the request may be received from other entities within the first SMaC 7a that is performing the procedure or from another (separate) node, e.g. the first AN 3a.
  • the request is band specific and should thus identify the band, e.g. by including a band identification (ID).
  • ID may for instance comprise a specific indicator for a specific band.
  • the request may indicate the frequency range directly, i.e. indicate start/stop frequency.
  • the request may comprise all band IDs explicitly or implicitly. As a particular example, not including any band ID in the request could be set to mean "check all bands”.
  • the request may be triggered by one or more of the following situations:
  • the first AN 3a may have difficulties handling a high amount of traffic (e.g. serving many MTs 2a, 2b and/or each MT 2a, 2b requiring a high capacity and/or providing backhaul connections to other ANs), it may send a request to the first SMaC 7a requesting a band quality assessment of any available bands.
  • the use of an additional band or an alternative band could then aid in the handling of the traffic.
  • the first SMaC 7a may thus be configured to periodically perform the band quality assessment of one or more bands.
  • the first SMaC 7a may be adapted to perform a band quality check every hour for the first AN 3a, and thus send such band quality assessment to the first AN 3a hourly.
  • Degraded performance of the system e.g. due to high level of interference. Finding a new band can potentially resolve this degraded performance.
  • the degraded performance may be detected in e.g. the first AN 3a, upon which it sends a request to the SMaC 7a to assess band quality of one or more bands. The use of an additional band or use of another band could then improve the interference situation.
  • Step 2 Band information check and spectrum sharing scenario determination (box 52 of figure 5)
  • the first radio access system 1 may comprise one or more spectrum information databases (SIDBs) 9.
  • the SIDB 9 may comprise and provide a list of frequency bands supported by the first AN 3a from a hardware point of view. Such list may for instance comprise frequency range, band type (e.g. primary user mode, unlicensed or LSA) and type of coexisting system if any (e.g. Radar, Wi-Fi, other FRA systems, etc.), i.e., other systems which the current first radio access system 1 may have to coexist with.
  • the SIDB 9 may be stored in the SMaC 7a, 7b, 7c, 7d, y or at least be accessible by the SMaC 7a, 7b, 7c, 7d, 7e.
  • the SIDB 9 may communicate with an external entity, e.g., the GLDB 8 in order to update the stored information. Changes to the information maybe announced directly from the external entity or be discovered via periodic update requests from the SIDB 9, or triggered by the SMaS 6 if there is an expected need for updating the information. In some embodiments the SMaS 6 queries the external entity (e.g., GLDB 8, 24) for the information directly, i.e. without the use of SIDB 9.
  • the external entity e.g., GLDB 8, 24
  • Table 1 below gives one example of the possible content of the SIDB 9. It is noted that the information maybe stored in various different ways; e.g. as identifiers, such as integer numbers, for any set of band range, band type and coexisting system. It is further noted that one band range may contain one or multiple band types and/or coexisting systems.
  • a spectrum sharing scenario may be determined for instance based on information such as exemplified in Table 1. Various such spectrum sharing scenarios were described earlier in relation to figure 3.
  • Step 3 Spectrum sharing tool determination (box 53 of figure 5)
  • a first potential band for use in the first radio access system 1 has the frequency range of 40.5-43.5 GHz, is a LSA dedicated band and a fixed microwave system has a license to use this band.
  • a second potential band for use in the first radio access system 1 has the frequency range of 47.5 - 50GHz, is a licensed dedicated band without any coexisting system.
  • a third potential band for use in the first radio access system 1 has the frequency range of 57-64 GHz, is an unlicensed band and a WiFi system and other mmW networks may coexist on this third band.
  • a fourth potential band for use in the first radio access system 1 has the frequency range of 67-69 GHz, is an unlicensed band with primary user, i.e.
  • the SMaC 7a, 7b, 7c, 7d, 7e may determine a relevant set of spectrum sharing tools according to a supporting spectrum sharing toolbox map (step 3, box 53).
  • a supporting spectrum sharing toolbox map maybe a subset of a general first radio access spectrum sharing toolbox, e.g. as illustrated in figure 3.
  • Input to this step is the capabilities of the first AN 3a as well as the band information from step 2 above.
  • Examples of AN capabilities comprise which spectrum sharing tools the AN is capable of using, e.g., based on its software, hardware, processor capacity, load etc.
  • This toolbox map may comprise the supporting band type, sharing scenario, sharing tool and the mapping connection between them.
  • Figure 6 gives one example of a certain spectrum sharing toolbox map.
  • the considered node e.g. AN or AgN
  • the considered node supports the regulatory frameworks of LSA dedicated band mode 31, and unlicensed band mode 32b without primary users and also unlicensed mode 32a with primary users to be protected.
  • the boxes 32a, 32b and 31 thus constitute the band types supported by the node.
  • Boxes 28b, 29, 28a comprise different sharing scenarios (compare figure 3 and description thereof) and boxes 23, 25, 24 comprise spectrum sharing tools (compare figure 3 and description thereof).
  • the spectrum sharing tool detection & DFS/DCS 23 maybe used to enable vertical coexistence with Radar systems, and Wi-Fi coexistence mode 25 may be used to enable horizontal
  • a vertical coexistence means that there exist potential users in the band with higher priority.
  • a horizontal coexistence means that the node's users have same priority as the potentially coexisting users.
  • Two functionalities may need to be turned on simultaneously. That is, both vertical coexistence (box 28b) as well as unlicensed horizontal coexistence with Wi-Fi systems (box 29) may be required.
  • a primary user here the radar system, box 28b
  • the band is an unlicensed band with Wi-Fi systems operating in it
  • Step 4 Activating an information collection module (ICM) (box 54 of figure 5)
  • Different parts in the ICM may be activated based on the results of the above steps, depending on identified spectrum type of a particular band and based on the outcome of step 3.
  • Different functionalities of the ICM maybe activated specifically for selected spectrum sharing tools. Examples of the operations performed by the ICM based on different selected spectrum sharing tools are listed in the following (non- exhaustive list):
  • ICM may query the geo-location database 8 for the band availability directly or via the SMaS 6.
  • ICM may start a peer network discovery function to see if there is any interfering radio access system around and determine or predict how an interference situation would be if the first AN 3a would start using a certain candidate spectrum.
  • ICM may initiate a detection to establish if there is any Wi-Fi system around and how such Wi-Fi system is using the candidate spectrum.
  • the ICM may for instance perform an assessment of the activity level of the Wi-Fi system, e.g. the amount spectrum it utilizes e.g. averaged over time.
  • the ICM may for instance obtain interference levels to the own system from coexisting system(s), or certain features used in a coexisting system. Such information may be obtained by sensors sensing it, or by the ICM requesting measurements to be performed, or the ICM requesting information from nodes of a coexisting system, etc.
  • ICM may activate one or a combination of the above functions 21, 23, 24, 25 based on the band for which quality assessment has been requested.
  • Step 5 Assessment of band quality (box 55 of figure 5)
  • Band quality can be assessed by combining the collected information (e.g. as collected in at least one of steps 2 and 4) in a utility function.
  • the outcome, the band quality assessment may then be a metric reflecting the usability of a particular band.
  • An exemplary utility function, giving a utility value W provided for illustrative purposes, comprises:
  • the weight parameter may reflect e.g. difficulty of a certain band type to be coordinated with another band: a band that is difficult to coordinate with a band currently used in the first AN 3a (which requests the band quality assessment) may be assigned a weight value making this band to be reflected as a low value candidate in the assessment.
  • ⁇ horizontal is a utility parameter indicating the situation of horizontal systems.
  • One particular example comprises:
  • W horizontal may for instance be used to weighed down systems of different type than the type of systems that the first AN 3a is part of.
  • B is the bandwidth of the particular band.
  • the utility value W in this case is larger for a band that is found to promise more benefits e.g. for the first AN 3a for which the first SMaC 7a is performing the band quality assessment.
  • a high utility value W may be interpreted as a higher quality of the band, and a band of high utility value W is therefore preferred over another band of lower utility value W.
  • a band of utility value o is prevented from being used. This may for instance be the case when there is an active primary system present.
  • the utility value W should also indicate this, e.g. by being equal to zero.
  • the utility function used for establishing the utility value W maybe adapted to use the obtained piece of information (band type, coexisting systems etc.) expressed as a respective metric and applying these respective metrics in a mathematical function interrelating them and outputting the utility value W of the first band.
  • Various such mathematical functions may be used.
  • the first SMaC 7a may output general band selection priority results to the requesting entity (e.g. the first AN 3a). It may for instance output high, medium and low level of priority, or some numerical value representing the band quality.
  • the utility function may also take as input the type(s) of traffic intended to run over the first wireless system 1. For instance, for mission critical traffic (e.g., safety applications) a licensed band may have a high positive impact on band quality, whereas for best effort high rate traffic, such as for instance file downloading, a high bandwidth would have a larger impact. This traffic type(s) information must then be provided, e.g., in the request for band quality assessment.
  • the band quality determination may be performed in the SMaC 7a, 7b, 7c, 7d, ye based on collected information; for a centralized structure comprising a SMaS 6, the band quality determination maybe performed in the SMaS 6 by collecting all the information from multiple SMaCs 7a, 7b, 7c, 7d, 7e or the determination may be performed in the SMaC 7a, 7b, 7c, 7d, ye by collecting part of the information itself and receiving part of information from the SMaS 6. Both in a centralized and distributed structure the band quality
  • the SMaCs 7a, 7b, 7c, 7d, 7e make a local assessment of the channel quality, e.g., a number of N SMaCs produce the utility values W_i,W_(2,),...,W_N for a given band.
  • the utility values are reported to the SMaS 6 which combines the information into a final or global assessment of the band. This distributed assessment limits the amount of data needed to be
  • the combined assessments of all considered bands may be useful for managing and optimizing handover procedures for users moving through the first wireless system 1 managed by the SMaS 6.
  • the combination of the utility values produced in the SMaS 7a, 7b, 7c, 7d, ye is a linear combination of the reported utility values, e.g.,
  • a SMaC 7a, 7b, 7c, 7d, ye believed to be very accurate in the determination of the utility values, or which SMaC is associated with an AN serving a large amount of traffic, is given a higher value of the a t . It may be important that a SMaC associated with an AN serving a large amount of traffic is kept in service, or gets a more beneficial spectrum band, and such node may therefore be given a higher weight than nodes serving less traffic.
  • the combination forms a final or global assessment of the considered band or channel.
  • Step 6 Assessment result reporting (box 56 of figure 5)
  • the output from step 5 is reported back to the requesting entity.
  • the report may comprise the quality of all assessed bands, or only a subset of the bands. In the latter case the subset would typically comprise the bands with the highest quality.
  • the report may comprise a single band: the band assessed to have the highest quality. In such a case the node does not only perform band assessment, but additionally has the responsibility to directly select the band to be used for operation.
  • One reason for reporting the quality of multiple bands may be that the requesting entity may need multiple channel/carriers instead of only one. Another reason may be that it is not known by band quality assessment functionality that the channel that is subject to the assessment is intended to be used as primary or secondary carrier in a carrier aggregation case. The selection of the carrier maybe different by considering this. Yet another reason maybe that the requesting entity may need to select operating channels for a cluster of ANs, not all operating on the same channel. For this, yet additional factors e.g. routing, interference and etc. may need to be considered as well.
  • Figure 7 illustrates a flow chart over steps of a method in a node for establishing a metric reflecting usability of a first band of a radio spectrum in accordance with the present disclosure.
  • the method 60 for establishing a metric reflecting usability of a first band of a radio spectrum maybe performed in a node 3a, 4a, 6, 7a of a first wireless system 1.
  • the metric may reflect usability for operating the first wireless system 1 on the first band of the radio spectrum.
  • the method 60 may be performed in the earlier described spectrum management client (SMaC) 7a, 7b, 7c, 7d, 7e, or in the spectrum management server (SMaS) 6.
  • the SMaC 7a, 7b, 7c, 7d, 7e could be an integrated part of an access node 3a, 3b, 3c, or an aggregation node 4a, 4b.
  • the method 60 comprises obtaining 61 information about the first band.
  • the information identifies a frequency range within the radio spectrum and regulatory requirements relating to the first band.
  • the information about the first band may be obtained for instance by retrieving, requesting or receiving the information from a database (for instance a spectrum information database SIDB 9 described earlier).
  • the method 60 comprises obtaining 62 information relating to a current use of the first band by a second wireless system 10.
  • the second wireless system 10 may be a system using the same type of radio access technology as the first wireless system 1, or it may be a system using another type of radio access technology.
  • the second wireless system 10 may have an impact on the metric reflecting usability of the first band, e.g. if it uses the first bandwidth with priority or causes high interference on the first wireless network 1.
  • the method 60 comprises establishing the metric reflecting usability of the first band for the first wireless system 1 based on the obtained information about the first band and the obtained information relating to the current use of the first band.
  • the establishing a metric may for instance comprise calculating a numerical value indicative of the usability of the first band.
  • the metric that is established may thus for instance comprise a numerical value or a numerical level.
  • the metric may be compared to a threshold value for determining whether the first band is a viable candidate for use by the first wireless system 1. If a respective metric is established for e.g. two different bands, a comparison can be made to determine which, if any, band is to be used.
  • the metric may for instance be the utility value W described earlier, and e.g. a high numerical value of the metric may indicate a high potential usability (e.g. high quality of the first band).
  • the method 60 enables assessment of quality of various available bands, which could potentially be used by the first wireless system 1.
  • a dynamic spectrum access is thereby enabled, which may give for instance improved throughput and thus user satisfaction in the first wireless system 1.
  • the regulatory requirements may for instance comprise restrictions on the use of the band, or forbidding e.g. the first wireless system 1 to use the band at all, or allowing use under certain restrictions e.g. users may be given a low priority.
  • the current use of the first band, if used at all, is also relevant for establishing if the first band is usable for the node of the first wireless system. If for instance the information relating to the current use reveals that the first band has a high occupancy level, then the usability of the first band might, but need not, be of less value. If the regulatory requirements are such that the users of the first wireless system would get higher priority than the current users, then the usability might be high despite the fact that the first band has a high occupancy level. Various information thus affects the usability of the first band for the node of the first wireless system 1. In order to establish the metric reflecting the usability of the first band at least the information identifying frequency range and regulatory requirements as well as current use by other wireless systems are used.
  • the resulting metric defines, in some sense, the value of the first band for use in serving users in the first wireless system.
  • the first band may be used as a
  • the first band may thus be used in addition to an existing band, but it may also be used instead of a band that is used in the first wireless system if the usability of it, as reflected by the metric, is indicated as being higher than the currently used band.
  • the metric may be used for selecting the best band among various bands for long-term use or for use during shorter periods, e.g. during load peaks. Metrics established for different such candidate bands can be compared and the most suitable band can then be selected, wherein the metric indicates the most suitable one.
  • the metric is an objective measure that renders different bands directly comparable, irrespective of which type of band, radio access technology etc. The present method thus provides a way of assessing band quality of candidate bands to support multiple heterogeneous bands.
  • the obtaining 61 information about the first band further comprises obtaining information about type of radio access technology of one or more wireless systems using the first band and/ or capability of a network node within the first wireless system 1 to access different bands.
  • the obtaining 61 information about the first band comprises determining compliance of regulatory requirements about use of the first band by the first wireless system 1.
  • the obtaining 62 information relating to the current use of the first band comprises establishing a spectrum sharing scenario in the first band between the first wireless system 1 and the second wireless system 10 based on the obtained information relating to the current use of the first band.
  • spectrum sharing scenarios have been given e.g. in relation to description of figure 3 ⁇
  • the spectrum sharing scenario comprises an estimated interference situation in the first wireless system ⁇ if the first band is used by the first wireless system ⁇ concurrently with use of the first band by the second wireless system 10.
  • the interference situation maybe estimated e.g. by performing computer simulations.
  • the obtaining 62 information relating to current use of the first band by the second wireless system 10 comprises determining one or more of: availability of the first band in terms of occupancy level on the first band, existence of a second wireless system 10 interfering with the first wireless system 1 and the resulting interference situation if the first wireless system 1 starts using the first band, activity level in the first band by a second wireless system 10, and interference level caused to the first system 1 by a second system 10. It is noted that the existence of a second wireless system may be sufficient in some instances, while in other instances such second wireless system may also be identified.
  • a second wireless system exists that is interfering with the first wireless system 1, a particular interference situation exists. Such interference can be measured. This particular interference situation may be affected if the first wireless system 1 would start using the first band.
  • the method 60 may take this into account when establishing the metric reflecting the usability of the first band.
  • the existence of a second wireless system may be determined by obtaining information from the spectrum information database 9 (reference is made to Table 1 and related
  • the resulting interference situation if the first wireless system 1 would start using the first band maybe estimated, for instance based on previous experience of similar situations.
  • the first system 1 maybe an LTE system and the second system 10 a Wi-Fi system. Based on knowledge on how Wi-Fi behaves if there is a second system entering the first band, it can be expected the Wi-Fi system will back off if faced with interference from the LTE system.
  • the LTE system should thus enable the Wi-Fi system to operate on the first band, e.g. by leaving empty time slots in which the Wi-Fi system is allowed to operate.
  • the load level in the LTE system will imply the amount of transmissions will be needed and hence the interference situation will change accordingly.
  • the resulting interference situation may be established by relying on computer simulations and/ or historical information on e.g. coexistence of such first and second wireless systems using the first band.
  • the establishing 63 the metric is further based on one or more of: bandwidth of the first band, available bandwidth for the first band, concurrent use of the first band by any other wireless system, interference power level of any other wireless system concurrently using the first band, presence of a wireless system concurrently using the first band having higher priority than the first wireless system 1 to use the first band, presence of a second wireless system 10 concurrently using the first band having equal priority with the first wireless system 1 to use the first band.
  • the bandwidth of the first band is not necessarily equal to the actually available bandwidth of the first band.
  • the first band may be split into several channels some of which are available for use while others are not.
  • the method 60 comprises:
  • the first band and the second band are used by different radio access technology systems.
  • the first band may have a first frequency range, which is typically used by a first type of radio access technology system, while the second band has a second frequency range, which is typically used by another type of radio access technology system.
  • the metric reflecting usability of the first band for the first wireless system 1 may be established by interrelating the obtained information so as to result in a numerical value. The numerical value may then be used for selecting a band among available bands.
  • the establishing 63 the metric reflecting the usability comprises expressing each obtained piece of information as a respective metric and applying the respective metrics in a mathematical function interrelating the obtained information and outputting a numerical value of the metric reflecting the usability of the first band.
  • the first band comprises one of: a dedicated licensed band, a licensed shared access band, unlicensed band or unlicensed band with a primary user having priority to use the unlicensed band.
  • the method 60 comprises, before the obtaining information about the first band, receiving a request for establishing the usability metric for the first band.
  • a request for establishing the usability metric for the first band may come from an entity within the node 3a, 4, 6, 7a or from another node or entity external to the node 3a, 4, 6, 7a.
  • the request comprises an identification of the first band.
  • a band may be identified in different ways, as have been exemplified earlier in the description.
  • the request is triggered by an identified need for the first band, or by traffic on a band currently used by the first wireless system 1 exceeding a threshold value, or by quality of communication on a band currently used by the first wireless system 1 degrading below a set level, or by a configurable check of band availability, or by a detected reduced performance in the wireless system 1, or by an interference level of the wireless system 1 exceeding a threshold value.
  • the method 60 comprises providing the metric for the first band to a requesting entity.
  • Figure 8 illustrates schematically a node and means for implementing methods of the present disclosure.
  • the various embodiments of the method 60 as described e.g. in relation to figure 7 may be implemented in the node 3a, 4, 6, 7a.
  • the node 3a, 4, 6, 7a comprises a processor 70 comprising any combination of one or more of a central processing unit (CPU), multiprocessor, microcontroller, digital signal processor (DSP), application specific integrated circuit etc. capable of executing software instructions stored in a memory 71, which can thus be a computer program product 71.
  • the processor 70 can be configured to execute any of the various embodiments of the method for instance as described in relation to figure 7.
  • the memory 71 can be any combination of read and write memory (RAM) and read only memory (ROM), Flash memory, magnetic tape, Compact Disc (CD)-ROM, digital versatile disc (DVD), Blu-ray disc etc.
  • the memory 71 also comprises persistent storage, which, for example, can be any single one or combination of magnetic memory, optical memory, solid state memory or even remotely mounted memory.
  • a data memory 74 may also be provided for reading and/or storing data during execution of software instructions in the processor 70.
  • the data memory 74 can for instance be any combination of random access memory (RAM) and read only memory (ROM).
  • the node 3a, 4, 6, 7a may also comprise an input/output device 73 (indicated by I/O in the figure) for communicating with other entities.
  • Such input/ output device 73 may for instance comprise a communication interface.
  • a node 3a, 4, 6, 7a of a first wireless system 1 is provided for establishing a metric reflecting usability of a first band of a radio spectrum.
  • the node 3a, 4, 6, 7a is configured to:
  • the node 3a, 4, 6, 7a may be configured to perform the above steps e.g. by comprising a processor 70 and memory 71, the memory 71 containing instructions executable by the processor 70, whereby the node 3a, 4, 6, 7a is operative to perform the steps.
  • the node 3a, 4, 6, 7a is configured to further obtain information about type of radio access technology of one or more wireless systems using the first band and/or capability of a network node within the first wireless system 1 to access different bands.
  • the node 3a, 4, 6, 7a is configured to obtain information about the first band by determining compliance of regulatory requirements about use of the first band by the first wireless system 1.
  • the node 3a, 4, 6, 7a is configured to obtain information relating to the current use of the first band by establishing a spectrum sharing scenario in the first band between the first wireless system 1 and the second wireless system 10 based on the obtained information relating to the current use of the first band.
  • the spectrum sharing scenario comprises an estimated interference situation in the first wireless system 1 if the first band is used by the first wireless system 1 concurrently with use of the first band by the second wireless system 10.
  • the node 3a, 4, 6, 7a is configured to obtain information relating to current use of the first band by the second wireless system 10 by determining one or more of:
  • the node 3a, 4, 6, 7a is configured to establish the metric further based on one or more of: bandwidth of the first band, available bandwidth for the first band, concurrent use of the first band by any other wireless system, interference power level of any other wireless system concurrently using the first band, presence of a second wireless system 10 concurrently using the first band having higher priority than the first wireless system 1 to use the first band, presence of a second wireless system 10 concurrently using the first band having equal priority with the first wireless system 1 to use the first band.
  • the node 3a, 4, 6, 7a is configured to:
  • the node 3a, 4, 6, 7a is configured to establish the metric reflecting the usability by expressing each obtained piece of information as a respective metric and applying the respective metrics in a mathematical function interrelating the obtained information and outputting a numerical value of the metric reflecting the usability of the first band. Examples of mathematical functions that maybe used have been given earlier.
  • the first band comprises one of: a dedicated licensed band, a licensed shared access band, unlicensed band or unlicensed band with a primary user having priority to use the unlicensed band.
  • the present disclosure also encompasses a computer program product 71 comprising a computer program 72 for implementing the embodiments of the method as described, and a computer readable means on which the computer program 72 is stored.
  • the computer program product 71 may, as mentioned earlier, be any combination of random access memory (RAM) or read only memory (ROM), Flash memory, magnetic tape, Compact Disc (CD)-ROM, digital versatile disc (DVD), Blu- ray disc etc.
  • the present disclosure thus comprises a computer program 72 for a node 3a, 4, 6, 7a for establishing a usability metric for a first band of a radio spectrum.
  • the computer program 72 comprises computer program code, which, when executed on at least one processor on the node 3a, 4a, 6, 7a causes the node 3a, 4, 6, 7a to perform the method 60 according to any of the described embodiments thereof.
  • a computer program product 71 comprising a computer program 72 as described above and a computer readable means on which the computer program 72 is stored is also provided.
  • the computer program product thus comprises instructions executable by the processor 70.
  • Such instructions maybe comprised in a computer program, or in one or more software modules or function modules.
  • Figure 9 illustrates an example of an implementation of the node 3a, 4a, 6, 7a using function modules and/ or software modules.
  • figure 9 illustrates a node 3a, 4a, 6, 7a comprising function modules for implementing embodiments of the method of the present disclosure.
  • the node 3a, 4a, 6, 7a comprises first means 81, for example a first function module, for obtaining information about the first band, the information identifying a frequency range within the radio spectrum and regulatory requirements relating to the first band.
  • Such means 81 may for example comprise processing circuitry adapted to obtain the information by using program code stored in a memory.
  • the means 81 may for instance be adapted to obtain the information from a database by requesting the information or by receiving it.
  • the node 3a, 4a, 6, 7a comprises second means 82, for example a second function module, for obtaining information relating to a current use of the first band by a second wireless system 10.
  • Such means 82 may for example comprise processing circuitry adapted to obtain the information by using program code stored in a memory.
  • the means 82 may for instance be adapted to obtain the information from a database by requesting the information or by receiving it.
  • the node 3a, 4a, 6, 7a comprises third means 83, for example a third function module, for establishing the metric reflecting usability of the first band for the first wireless system based on the obtained information about the first band and the obtained information relating to the current use of the first band.
  • Such means 83 may for example comprise processing circuitry adapted to establishing the metric reflecting usability of the first band for the first wireless system based on the obtained information about the first band and the obtained information relating to the current use of the first band by using program code stored in a memory.
  • the means 83 may be adapted to calculate the metric based on the available information.
  • the node 3a, 4a, 6, 7a may comprise still further means for implementing the various features of the method as have been described.
  • the node 3a, 4a, 6, 7a may comprise a fourth function module 84, for establishing a metric reflecting usability of a second band, and prioritizing between the first and second band for use by the first wireless system 1 based on the metric reflecting usability of the first band and the metric reflecting usability of the second band.
  • Such means 84 may comprise processing circuitry adapted to do such establishing and prioritizing by using program code stored in a memory.
  • the means 81, 82, 83, 84 can be implemented using software instructions such as computer program executing in a processor and/ or using hardware, such as application specific integrated circuits, field programmable gate arrays, discrete logical components etc., or any combination thereof.
  • Figure 10 illustrates the system 100 of figure 4 in a more schematic way.
  • the embodiments of the method that have been described may be implemented in the first wireless system 1 or anywhere in the system 100 comprising the first wireless system 1.
  • the method may for instance be implemented in a single node, such as the SMaC 7a, 7b, 7c, 7d or in the SMaS 6, as has been described e.g. with reference to figure 7.
  • SMaC 7a, 7b, 7c, 7d or in the SMaS 6, as has been described e.g. with reference to figure 7.
  • different functions maybe performed by different devices, some function for instance being performed in the SMaS 6, while another is performed in the "cloud" 5c, for instance a server 110 thereof. This situation is illustrated in figure 10, i.e.
  • the method 90 performed in the system 100 maybe executed partly in the SMaS 6, and in particular a first processor 130 thereof, and partly in the server 110 of the cluster of servers 5c (e.g. Internet), and in particular to a second processor 120 thereof.
  • the method may thus be implemented in a distributed fashion e.g. by software instructions run on one or more processors 120, 130, wherein different functions maybe implemented as different sets of software instructions.
  • processors 120, 130 being arranged to perform a method 90 in the system 100, corresponding to the method 60 as have been described, these processors 120, 130 are operatively interconnected, and e.g. able to exchange information.
  • the server 110 may comprise a memory 121 and computer program 122 for performing its dedicated steps of the method.
  • the SMaS 6 comprises a processor 130 and memory 131 and computer program 132 for performing its dedicated steps of the method.
  • the system 100 may comprise a first wireless system 1, a second wireless system 10, a core network 5a and local networks 5b, and/or clusters of networked servers.
  • the system 100 may comprise all of the mentioned parts or only some thereof.
  • a method 90 is thus also provided for establishing a metric reflecting usability of a first band of a radio spectrum.
  • the method 90 can be performed in a system 100 for establishing the metric reflecting usability of a first band of a radio spectrum.
  • the system 100 may comprise several sub-systems as have been described earlier with reference to figure 4, or only the first wireless system 1.
  • the method 90 comprises obtaining 91 information about the first band, the information identifying a frequency range within the radio spectrum and regulatory requirements relating to the first band; obtaining 92 information relating to a current use of the first band by a second wireless system 10; and establishing 93 the metric reflecting usability of the first band for the first wireless system 1 based on the obtained information about the first band and the obtained information relating to the current use of the first band.
  • a system 100 comprising a first wireless system 1 for establishing a metric reflecting usability of a first band of a radio spectrum.
  • the system 100 is configured to: - obtain information about the first band, the information identifying a frequency range within the radio spectrum and regulatory requirements relating to the first band,
  • the system 100 maybe configured to perform the above steps e.g. by comprising one or more processors 120, 130 and memory 121, 131, the memory 121, 131 containing instructions executable by the processors 120, 130, whereby the system 100 is operative to perform the steps.
  • the memory 121, 131 can be any combination of read and write memory (RAM) and read only memory (ROM), Flash memory, magnetic tape, Compact Disc (CD)-ROM, digital versatile disc (DVD), Blu-ray disc etc.
  • the memory 121, 131 may also comprise persistent storage, which, for example, can be any single one or combination of magnetic memory, optical memory, solid state memory or even remotely mounted memory.

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Abstract

La présente invention concerne un procédé (60) pour établir une mesure indiquant la capacité d'utilisation d'une première bande d'un spectre radio effectué dans un nœud (3a, 4, 6, 7a) d'un premier système sans fil (1). Le procédé (60) consiste à obtenir (61) des informations concernant la première bande, les informations identifiant une plage de fréquences à l'intérieur du spectre radio et d'exigences réglementaires concernant la première bande; obtenir (62) des informations relatives à une utilisation courante de la première bande par un second système sans fil (10), et établir (63) la mesure indiquant la capacité d'utilisation de la première bande pour le premier système sans fil (1) en fonction des informations obtenues concernant la première bande et des informations obtenues concernant l'utilisation courante de la première bande.
PCT/SE2015/050337 2014-12-03 2015-03-20 Procédés pour établir une mesure indiquant la capacité d'utilisation d'une bande de spectre radio, et nœud, système, programme d'ordinateur et produits de programme d'ordinateur correspondant Ceased WO2016089274A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN110313209A (zh) * 2016-12-23 2019-10-08 瑞典爱立信有限公司 接入频谱分配
US11558752B2 (en) 2016-12-23 2023-01-17 Telefonaktiebolaget Lm Ericsson (Publ) Access spectrum assignment
CN110313209B (zh) * 2016-12-23 2023-08-04 瑞典爱立信有限公司 传输调度和数据传输的方法、无线电控制单元、处理设备和存储介质

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