EP4018758A1 - Gestion de spectre partagé dans une communication sans fil - Google Patents

Gestion de spectre partagé dans une communication sans fil

Info

Publication number
EP4018758A1
EP4018758A1 EP20793622.0A EP20793622A EP4018758A1 EP 4018758 A1 EP4018758 A1 EP 4018758A1 EP 20793622 A EP20793622 A EP 20793622A EP 4018758 A1 EP4018758 A1 EP 4018758A1
Authority
EP
European Patent Office
Prior art keywords
access node
activity
access
shared spectrum
node
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20793622.0A
Other languages
German (de)
English (en)
Inventor
Kåre AGARDH
Peter C KARLSSON
Rickard Ljung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Group Corp
Sony Europe BV
Original Assignee
Sony Group Corp
Sony Europe BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Group Corp, Sony Europe BV filed Critical Sony Group Corp
Publication of EP4018758A1 publication Critical patent/EP4018758A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present invention relates to the field of wireless communication, in particular to solutions for managing coexistence of access nodes of different network nodes using a shared spectrum. Specifically, the invention relates to solutions for providing an access node with information on how to detect inactive timeslots of spectrum usage based on a type of technology already granted to a further access node for use of the shared spectrum.
  • Wireless communication networks both operated as cellular systems and as non- cellular systems, may operate in dynamic shared spectrum bands.
  • the concept of spectrum sharing is well known, and there are different technical solutions on how to share a spectrum between different wireless networks.
  • One method is the channel sensing method, where a regulator has determined a set of listen before talk (LBT) regulations.
  • LBT listen before talk
  • a Wi-Fi system for example, such as a wireless LAN system regulated under IEEE 802.11, uses LBT before any transmissions can be made. In case multiple networks operate simultaneously in the same area they will still be able to share the spectrum on fair terms.
  • a network node e.g. a base station
  • a base station may be granted to use a shared spectrum in case the database has not already granted the same area and the same spectrum to someone else.
  • the database method can be combined with LBT regulations as access rules.
  • US2018270815A1 presents one state of the art solution, wherein coexistence gaps may permit one radio access technology (RAT) to coexists with another RAT by providing period in which one RAT may be silent and another may transmit. Methods may account for the RAT traffic and for the presence of other secondary users in a channel.
  • RAT radio access technology
  • a network node configured for wireless communication within a shared spectrum, comprising a transceiver for wireless communication; an interface to a database configured to hold information on access grants in the shared spectrum; and logic configured to control the network node to obtain, from the database, information on a RAT of a further access node using the shared spectrum, which information is usable by the access node for identifying a level of activity of said further access node; and access the shared spectrum based on an identified level of activity of the further access node.
  • Fig. 1 schematically illustrates two coexisting wireless networks in an overlapping area operating in a shared spectrum.
  • Fig. 2 schematically illustrates an access node configured to operate in accordance with the embodiments laid out herein.
  • Fig. 3 schematically illustrates coexistence of two access nodes of different wireless networks, wherein at least one of those access nodes are configured to operate a plurality of beams.
  • Fig. 4 schematically illustrates an example of a network access protocol that may be used or unused during different periods of time.
  • Fig. 5 schematically illustrates a signal diagram including steps carried out at different access nodes, and between a manager node and an access node, in accordance with various embodiments.
  • the functions of the various elements including functional blocks may be provided through the use of hardware such as circuit hardware and/or hardware capable of executing software in the form of coded instructions stored on computer readable medium.
  • hardware such as circuit hardware and/or hardware capable of executing software in the form of coded instructions stored on computer readable medium.
  • the functional blocks may include or encompass, without limitation, digital signal processor (DSP) hardware, reduced instruction set processor, hardware (e.g., digital or analog) circuitry including but not limited to application specific integrated circuit(s) [ASIC], and (where appropriate) state machines capable of performing such functions.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • a computer is generally understood to comprise one or more processors or one or more controllers, and the terms computer and processor and controller may be employed interchangeably herein.
  • the functions may be provided by a single dedicated computer or processor or controller, by a single shared computer or processor or controller, or by a plurality of individual computers or processors or controllers, some of which may be shared or distributed.
  • processor or “controller” shall also be construed to refer to other hardware capable of performing such functions and/or executing software, such as the example hardware recited above.
  • wireless transmission is carried out in a mm wave frequency band, e.g. over 6 GHz.
  • a first wireless network 100 may comprise a core network 110, which may be connected to other networks, e.g. through the Internet 140.
  • the wireless network 100 further comprises one or more network nodes for providing access to the network, commonly referred to as access nodes or base stations, of which a first access node 120 is illustrated.
  • access nodes or base stations commonly referred to as access nodes or base stations
  • a first access node 120 is illustrated.
  • a network node may be an eNB
  • a corresponding entity is referred to as a gNB.
  • the first access node 120 is configured for wireless communication 120 with various wireless terminals.
  • the access node may comprise a transmission point (TRP), comprising an antenna system, and control logic configured to communicate with the core network.
  • TRP transmission point
  • the control logic may be arranged in conjunction with the TRP and logic for controlling the antenna system of the. Alternatively, the control logic may be remotely arranged with respect to the TRP. Functionally, the TRP and the control logic are nevertheless collectively referred to herein as the access node.
  • a first wireless terminal 10 is shown, also referred to as terminal for short herein, operative to communicate 130 wirelessly with the wireless network 100.
  • the terminal 10 may e.g. be selected from the group comprising at least handheld device; mobile device; robotic device; smartphone; laptop; drone; tablet computer; wearable devices, IoT (Internet of Things) devices, smart meters, communication modems/access points, navigation devices (GPS units), cameras, CAM recorder etc.
  • IoT Internet of Things
  • GPS units navigation devices
  • cameras CAM recorder etc.
  • a second access node 150 of a second wireless network 101 is shown.
  • Fig. 2 schematically illustrates an access node 120 of the wireless network 100, adapted to wirelessly communicate with wireless terminals such as the terminal 10, and configured for carrying out the associated method steps as outlined.
  • This embodiment is consistent with the scenario of Fig. 1.
  • the described elements and features of the access node 120 may in various embodiments be included also in the access node 150.
  • the access node 120 may comprise a wireless transceiver 213 for communicating with other entities of the wireless network 100, such as the terminal 10, through at least an air interface on a radio channel 150.
  • the access node 120 may further comprise an interface 214 for communicating with the core network 110 or other entities within or connected to the wireless network 100, 101.
  • the access node 120 further comprises logic 210 configured to control at least the wireless transceiver 213 to communicate data on the radio channel 150 to terminals including terminal 10.
  • the logic 210 may include a processing device 211, including one or multiple processors, microprocessors, data processors, co-processors, and/or some other type of component that interprets and/or executes instructions and/or data.
  • Processing device 211 may be implemented as hardware (e.g., a microprocessor, etc.) or a combination of hardware and software (e.g., a system-on-chip (SoC), an application-specific integrated circuit (ASIC), etc.).
  • SoC system-on-chip
  • ASIC application-specific integrated circuit
  • the processing device 211 may be configured to perform one or multiple operations based on an operating system and/or various applications or programs.
  • the logic 210 may further include memory storage 212, which may include one or multiple memories and/or one or multiple other types of storage mediums.
  • memory storage 212 may include a random access memory (RAM), a dynamic random access memory (DRAM), a cache, a read only memory (ROM), a programmable read only memory (PROM), flash memory, and/or some other type of memory.
  • RAM random access memory
  • DRAM dynamic random access memory
  • ROM read only memory
  • PROM programmable read only memory
  • flash memory and/or some other type of memory.
  • Memory storage 212 may include a hard disk (e.g., a magnetic disk, an optical disk, a magneto optic disk, a solid state disk, etc.).
  • the memory storage 212 is configured for holding computer program code, which may be executed by the processing device 211, wherein the logic 210 is configured to control the access node 120 to carry out any of the method steps as provided herein.
  • Software defined by said computer program code may include an application or a program that provides a function and/or a process.
  • the software may include device firmware, an operating system (OS), or a variety of applications that may execute in the logic 210.
  • the access node 120 may further comprise or be connected to an antenna 215, such as an antenna array 215.
  • the logic 210 may further be configured to control the wireless transceiver 213 to employ an anisotropic sensitivity profile of the antenna array 215 to transmit radio signals in a particular transmit direction.
  • the wireless terminal 10 and the access node 120 are configured to operate at a mm wave Frequency Range (FR), such as FR2 as provided for in NR.
  • the logic 210 is configured to control the wireless transceiver 213 to transmit a plurality of synchronization signals in a beam sweep, in which each of said synchronization signals identifies a beam-specific resource usable for wireless terminals when responding to the beam sweep, for entering a connected state.
  • FR mm wave Frequency Range
  • the wireless networks 100 and 101 may be operated as different types of communication systems, or as the same type. Examples of different communication systems include cellular systems such as UMTS, LTE, NR etc., and non-cellular such as Wi-fi or other wireless LAN technology.
  • the two wireless networks 100 101 may thus include different types of access networks, wherein the first access node 120 and the second access node 150 thus may operate with the same or different Radio Access Technologies (RAT).
  • RAT Radio Access Technologies
  • first wireless network 100 and the second wireless network 101 are configured to operate in a shared spectrum.
  • two or more access networks may be configured to operate in a common shared spectrum, only a portion of the spectrum used by those access nodes may in reality be the same in terms of frequency, meaning that they may operate in overlapping frequency bands.
  • the drawing of Fig. 1 illustrates a scenario where the first 120 and second 150 access nodes, or at least TRPs of those access nodes, are located such that signaling to or from one may interfere with signaling to or from the other unless measures are taken to avoid it. Such measures may involve LBT regulations.
  • a database 170 is illustrated, which may be controlled by a management function 160.
  • the management function 160 may include logic comprising a processing device, including one or multiple processors, microprocessors, data processors, co processors, and/or some other type of component that interprets and/or executes instructions and/or data.
  • the logic may further include memory storage, which may include one or multiple memories and/or one or multiple other types of storage mediums, such as non-volatile memories, for retrieving and storing information as data, to and from the database 170, and for communicating such information with access nodes 120, 150, directly or indirectly via other network nodes.
  • the solutions proposed herein are based on using a database 170 for frequencies to be handled by spectrum sharing.
  • the database 170 is configured, e.g. by means of its associated management function 160, to keep track of locations, such as areas or regions, and their allocated spectrum usage. This may be arranged in accordance with legacy spectrum sharing database methods.
  • the database is configured to store and share information usable by access nodes for accessing the shared spectrum, such as information indicative of a transmit protocol pattern for a type of access protocol which has been granted access in a given location.
  • accessing the shared spectrum may include transmitting or receiving data using the shared spectrum.
  • a database 170 configured to manage access grants to network nodes 120,150 for wireless communication within a shared spectrum.
  • the database is controlled by logic configured to obtain a message from an access node 150, which message identifies a request to use the shared spectrum; determine information on a RAT of a further access node 120 using the shared spectrum; and transmit said information to the access node 150, for use by the access node 150 to identify a level of activity of said further access node 120.
  • a network node 150 configured for wireless communication within a shared spectrum, comprising a transceiver 213 for wireless communication; an interface 214 to a database 170 configured to hold information on access grants in the shared spectrum; and logic 210 configured to control the network node to obtain, from the database 170, information on a RAT of a further access node 120 using the shared spectrum, which information is usable by the access node 150 for identifying a level of activity of said further access node 120; and access the shared spectrum based on an identified level of activity of the further access node 120.
  • the database 170 it will be possible to also store information in the database 170 or by other means have access to information that can indicate to an access node that wants to use a certain spectrum how to sense whether a certain part of the spectrum is unused, which is the legacy database approach and typically detected via an average sensed energy level being below a threshold; and used, as in already providing network coverage to the further access node 120, but not always utilized. This may e.g. be sensed via periods of inactivity of the shared spectrum on a frame by frame time base.
  • the proposed solutions are thus based on the notion that even when one access node 120 or network 100 is provided with network coverage, there may still be significant areas and/or time periods of non-usage. This is especially true if the wireless systems utilize high frequencies, e.g. 20GHz and above, since the transmissions are often very limited in the spatial domain.
  • 3GPP New Radio technology 5G
  • all active base stations will periodically transmit synchronization signals in different directions due to the beam sweeping behavior. But even if such a system is active, there are likely several beams not being used for data transmissions a large portion of the time. The locations and area not covered by these beams could be utilized by other wireless systems in the area. These unused resources reduce the usage of the wireless spectrum and could hence be used more effectively, i.e.
  • a new aspect proposed here is the potential re-use of already occupied spectrum.
  • the database may grant a second access to the same spectrum.
  • the database may grant specific access and channel sensing rules to such additional usage in an already used spectrum.
  • Fig. 5 schematically illustrates a signal diagram in which several method steps are illustrated between the database 170 and the access node 150. The drawing also depicts signaling between the database 170 and a further access node 120.
  • the suggested solution provides a method for operating an access node 150 for wireless communication within a shared spectrum, comprising obtaining 529, from a database 170, information 512 on a RAT of a further access node 120 using the shared spectrum, which information is usable by the access node for identifying a level of activity of said further access node; and access the shared spectrum based on an identified level of activity of the further access node.
  • the suggested solution provides a method for operating a database 170 configured to manage access grants to network nodes 120,150 for wireless communication within a shared spectrum, comprising obtaining 526, from an access node 150, a message 511 identifying a request to use the shared spectrum; determining 527 information 512 on a RAT of a further access node 120 using the shared spectrum; transmitting 528 said information to the access node, for use by the access node to identify a level of activity of said further access node.
  • the suggested methods provide a benefit by more efficient use of the shared spectrum, by means of the spectrum sharing database 170 providing information to the access node which can be used 536 therein to properly identify inactive periods of the further access node 120, such as time slots or frames, in a part of the shared spectrum, and hence make use of such periods in the access node 150.
  • the further access node 120 has been provided with network coverage in the shared spectrum, and where the access node 150 subsequently wants to access the shared spectrum, where at least a part of the spectrum used by the further access node 120 overlaps with the spectrum requested and/or granted to be used by the access node 150.
  • the further access node 120 will be alternatively referred to as the first access node 120, whereas the access node 150 will alternatively be referred to as the second access node 150.
  • the first access node 120 requests access to the shared spectrum.
  • the access request may involve transmitting 520 an access request message 501 for receipt 521 in the database 170.
  • the access request may include information identifying the RAT of the first access node 120.
  • the database 170 may issue 522 a grant 502 for receipt in the first access node 120. Thereby, at least a part of the shared spectrum is allocated to the first access node 120. Communication between the first access node 120 and the database 170 may be provided over the interface 214 of the first access node 120.
  • information related to the provision of the shared spectrum to the first access node 120 may be stored 524.
  • This configuration data may be used for detecting transmission from the first access node and thereby to derive access rules for the second access node 150.
  • the configuration data may comprise one or more of configuration parameter sets for transmit power thresholds, energy detection thresholds, spectrum emission masks, RAT-specific preambles usable for detecting signals such as discovery signals from the first access node 120, as well as information related to the used part of the shared spectrum, e.g. one or more of center frequency, utilized sub-carrier spacing, utilized system bandwidth etc.
  • the second access node 150 may further request access to the shared spectrum. This may involve transmitting 525 an access request message 511 for receipt 526 in the database 170.
  • the access request may include information identifying the RAT of the second access node 150.
  • the database 170 or by accessing the database 170, e.g. using the management function 160, it will then be determined that the shared spectrum is already used by the first access node 120. Identification that the shared spectrum is used may be determined in the database 170 by means of the second access node or another node having transmitted information to the database 170 that signals on the spectrum have been detected, meaning that the database includes information that the spectrum is both granted to the first access node and in addition it is also being used.
  • the database 170 may be configured to obtain information of a level of activity or inactivity from other radio devices, such as UEs 10. If a report of inactivity of the first access node 120 is obtained from one or a few UEs, this information need not be deemed to be reliable, since it may be caused by that or those UEs being present at a location where they cannot receive and sense transmissions from the first access node 120. However, if more than a predetermined number or percentage of radio devices, e.g. including access nodes and/or UEs, report measurements indicating inactivity of the first access node 120, this information may be deemed more accurate.
  • radio devices e.g. including access nodes and/or UEs
  • the database may thus further be configured to determine information of an output power grant, such as an allowed maximum power level or a configuration parameter usable for the first access node 150 to set or control the transmit power so as to not exceed such a power level.
  • the output power grant may be dependent on a quantity of said radio devices, where this quantity is actual or relative. That is, the information of the output power grant may be dependent on how many radio devices that report measurements indicating inactivity of the first access node 120.
  • Data involving information 512 on at least the RAT of the first access node 120 using the shared spectrum may thus be retrieved 527 from the database.
  • This information 512 is thus obtained 529 in the second access node 529 from the database 170.
  • the database 170 may provide indication of a grant 513, for receipt 529 in the second access node 150, for the second access node 150 to use the shared spectrum by allowing the second access node 150 to identify 536 a level of activity of the first access node 120.
  • the database 170 informs the second access node 150 that the spectrum is already granted to and being used by another system, but the second access node 150 is granted a re-use possibility of the same spectrum. Further the database 170 transmits information 512 indicative of RAT specific information on how to detect e.g. periods of inactivity, based on which type of access technology was granted to the first access node 120.
  • the information 512 provided by the database 170 may include a channel access scheme, e.g. a listen-before-talk rule set, for how to perform channel access during periods of inactivity from the first access node 120, based on which access technology is already using the spectrum.
  • a channel access scheme e.g. a listen-before-talk rule set
  • the received information 512 may subsequently be used by the second access node 150 to access 537 the shared spectrum in a controlled manner, without causing interference or other disturbance with any communication provided for by the first access node 120.
  • resources in the shared spectrum that have been provided for the first access node 120 to use, but which is not utilized, or not sensed by the second access node 150 may conveniently be utilized by the second access node 150, thereby obtaining improved usage of the shared spectrum.
  • the second access node 150 may be configured to identify a level of activity of the first access node 120 by determining that there exists a period of reduced activity of the first access node 120, such as a period in which only a portion of the time is used, or a certain power level, or a certain subpart of the shared spectrum.
  • said identified level of activity is a period of activity falling below a threshold value, such as a threshold related to a use level in terms of e.g. time, power or frequency.
  • a threshold value such as a threshold related to a use level in terms of e.g. time, power or frequency.
  • Such thresholds may be set and provided by the database 170 or be predetermined by specification.
  • said identified level of activity is a period of inactivity of the further access node.
  • the second access node 150 may be requested by the database to verify and measure on the spectrum and identify and report an amount of inactivity or activity.
  • the information 512 obtained in the second access node 150 from the database 170 may identify a request to report a measure associated with a level of activity of the first access node 120.
  • the database 170 may use this information to determine whether to grant a re-use access to the spectrum to the second access node 150. The benefit of such approach could be to only grant the re-use access in case there is a relatively large amount of free time periods for re-usage of the spectrum.
  • the second access node 150 may be configured to measure 530 an amount of activity or inactivity of the first access node on the shared spectrum.
  • a report is subsequently provided to the database 170, e.g. periodically such as on a frame-by-frame basis, by transmitting 531, to the manager node, data associated with the measured amount 514 of activity or inactivity.
  • This is subsequently followed by obtaining 535 grant 515, issued 534 by the database 170 dependent on the reported amount 514 of activity or inactivity.
  • a grant may be provided if the level of activity does not exceeds said threshold.
  • Fig. 3 schematically illustrates how, in various embodiments, the first access node 120, and possibly also the second access node 150, may configured to operate by beam- formed transmission, e.g. by spatial filtering of an associated antenna system or array 215.
  • the access node 120 may in such an embodiment e.g. by an NR gNB. in case first access node 120 uses beam formed transmissions as indicated in drawing, the first access node 120 may be active with data transmissions in several beam directions without interfering directly with the second access node 150. This provides even further benefits of this proposed re-use grant, compared to systems which operate with wider transmission sectors.
  • measuring the amount of activity or inactivity of the first access node, by the second access node 150 is thus carried out for a plurality of beams.
  • the report of measured amount 514 of activity or inactivity may thus indicate beam information.
  • the received grant 515 may further identify a subset of said plurality of beams.
  • the second access node 1150 may receive 535 a beam-specific access scheme to be used in periods of inactivity of the first access node 120.
  • Fig. 4 schematically shows an example illustrating use of the proposed idea.
  • the upper part of the drawing shows a first system or network 100, operated by the first access node 120, which is using a 3GPP NR-Unlicensed protocol.
  • the system 100 may operate in either a used or an unused state, and for NR technology this may vary on a relatively short time basis, e.g. per 20ms period.
  • Activity by the first access node 120 is indicated by boxes as 41.
  • a second system or network 101 at the lower part of the drawing, is operating using the second access node 150, and may be informed by the database 170 how to check for periods of activity or non-activity on the same spectrum according to the solutions provided herein.
  • the second access node 150 may be granted and instructed by the database how to re-use / fit its communication during periods of first system inactivity, e.g. by receiving specific channel access rules. Rather than the database 170 providing the second access node 150 with information on such inactive periods, the second access node 150 is provided with information 512 usable for determining 536 activity/inactivity in periods 42 used by the first access node 120.
  • a second system may be allowed by a dynamic database 170 to grant access to the second access node 150 to a common frequency of the shared spectrum as the first system, so that the second system can use unused periods in the first system. As noted, this could be on a beam per beam basis, from the perspective of the first system.
  • the database 170 may grant larger output power to be allowed for the second system, i.e. for use by access nodes 150 of the second system or network 101, the more devices in a similar area that detects unused periods. In this manner the potential interference from the second system to utilized beams in the first system will be reduced.
  • the database 170 could grant a higher output power to be used in the second case, where risk of interference is lower.
  • the beam-based transmissions as mentioned earlier could be used in further embodiments of this proposal, e.g. to grant a beam specific access grant to a second node.
  • the second node may detect different systems when using different antenna configurations (beams) and therefore the node may report beam specific information to the database.
  • the database may provide beam-based grants to the second node, to ensure that the second node that is re-using a spectrum takes beam specific considerations into account when re-using the occupied spectrum.
  • the database may provide a first access rule to a node for one beam, and a second access rule to the same node for another beam. This may for example be the case where the database considers that one beam is transmitting in a direction ot for an area where no other nodes have been granted access for a frequency, while there is already a granted access for the direction/area covered by a second beam from the node.
  • the database 170 may include a plurality of information fields. Such fields may be used for providing information related to specifics on radio access usage the database grants to an access node or which the node indicates to the database that it intends to use. As noted, such info may e.g. include utilized center frequency, utilized sub-carrier spacing, utilized system bandwidth etc. This information, associated with one or more access nodes 120 already provided with network coverage, may be used to grant access to another access node 150 for the re-use functionality which is here proposed. The benefits of storing and using this information via the database could be to enable less interference between a first 100 and second 101 wireless network operating in the same location. If, for example, the database 170 ensures that two different OFDM numerologies are being used by two systems (e.g. subcarrier spacings differ) or that the center frequencies in two systems are shifted (not the same), then there may be less interference between the system.
  • the proposed idea enables more granular spectrum usage in various embodiments, both in time domain (via detecting the inactive subframes) and in spatial domain (via beam specific reporting and access grants). This enables an increased aggregated spectrum utilization in terms of e.g. enabled communication of bits/Hz or similar total efficiency measurements.
  • a method for operating an access node 150 for wireless communication within a shared spectrum comprising obtaining 529, from a database 170, information 512 on a Radio Access Technology, RAT, of a further access node using the shared spectrum, which information is usable by the access node for identifying a level of activity of said further access node; and access the shared spectrum based on an identified level of activity of the further access node.
  • RAT Radio Access Technology
  • C7 The method of C5, wherein said information (512) identifies a request to report a measure associated with a level of activity of the further access node, the method further comprising; measuring (530) an amount of activity or inactivity of the further access node within the shared spectrum; transmitting (531), to the manager node, data associated with the measured amount (514) of activity or inactivity, prior to obtaining said grant.
  • C9 The method of C8, comprising receiving (535) a beam-specific access scheme to be used in periods of inactivity of the further access node.
  • a network node (150) configured for wireless communication within a shared spectrum, comprising a transceiver (213) for wireless communication; an interface (214) to a database (170) configured to hold information on access grants in the shared spectrum; and logic (210) configured to control the network node to obtain (529), from the database (170), information (512) on a Radio Access Technology, RAT, of a further access node using the shared spectrum, which information is usable by the access node for identifying a level of activity of said further access node; and access the shared spectrum based on an identified level of activity of the further access node.
  • RAT Radio Access Technology
  • a method for operating a database (170) configured to manage access grants to network nodes (120,150) for wireless communication within a shared spectrum comprising obtaining (526), from an access node (150), a message (511) identifying a request to use the shared spectrum; determining (527) information (512) on a Radio Access Technology, RAT, of a further access node using the shared spectrum; transmitting (528) said information to the access node, for use by the access node to identify a level of activity of said further access node.
  • C14 The method of C13, comprising transmitting (528,534), to the access node, a grant (513,515) to re-use the shared spectrum dependent on the identified level of activity of the further node.
  • C15 The method of C14, comprising obtaining (532), from the access node, data associated with the measured amount (514) of activity or inactivity of the further access node; determining (533), based on the information of the further access node and on the obtained data, an access scheme for the access node in the shared spectrum; transmitting (534) an indication of the access scheme to the network node.
  • C17 The method of C16, comprising transmitting (534), to the network node, a beam-specific access scheme to be used in periods of inactivity of the further access node.
  • Cl 9 The method of any of C 13-08, comprising obtaining an indication of radio devices detecting a level of inactivity of said further access node; and determining information of an output power grant for the access node dependent on a quantity of said radio devices.

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

Abstract

Procédé de fonctionnement d'un nœud d'accès (150) pour une communication sans fil dans un spectre partagé, comprenant l'obtention (529), à partir d'une base de données (170), d'informations (512) sur une technologie d'accès radio (RAT) d'un autre nœud d'accès (120) à l'aide du spectre partagé, lesdites informations pouvant être utilisées par le nœud d'accès pour identifier un niveau d'activité dudit autre nœud d'accès ; et l'accès au spectre partagé sur la base d'un niveau d'activité identifié de l'autre nœud d'accès.
EP20793622.0A 2019-10-28 2020-10-16 Gestion de spectre partagé dans une communication sans fil Pending EP4018758A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1951226 2019-10-28
PCT/EP2020/079158 WO2021083689A1 (fr) 2019-10-28 2020-10-16 Gestion de spectre partagé dans une communication sans fil

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EP4018758A1 true EP4018758A1 (fr) 2022-06-29

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