EP3834539A1 - Procédé de communication entre deux station de bases utilisant une bande de fréquences partagée, station de base et équipement utilisateur correspondants - Google Patents
Procédé de communication entre deux station de bases utilisant une bande de fréquences partagée, station de base et équipement utilisateur correspondantsInfo
- Publication number
- EP3834539A1 EP3834539A1 EP19742877.4A EP19742877A EP3834539A1 EP 3834539 A1 EP3834539 A1 EP 3834539A1 EP 19742877 A EP19742877 A EP 19742877A EP 3834539 A1 EP3834539 A1 EP 3834539A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base station
- user equipment
- frequency band
- transmission mode
- change
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Definitions
- the field of the invention is that of cellular communications. More specifically, the invention relates to the use of frequency bands not licensed by user equipment located in areas of radio coverage of several base stations.
- a mobile telephone network is a telephone network which allows the simultaneous use of a large number of mobile terminals.
- radio access technologies are attempting to distribute, as efficiently as possible, a single radio spectrum between mobile terminals.
- a mobile telephone network has a cellular structure which makes it possible to reuse the same frequencies of the radio spectrum several times.
- Each mobile operator is allocated one or more frequency bands in the radio spectrum, known as licensed frequency bands, which its base stations use to communicate with the mobile terminals of its users.
- unlicensed frequency bands being usable by all mobile operators, their accessibility is reduced and it can take a certain lapse of time before a base station or a mobile terminal can draw communicate using an unlicensed frequency band.
- Such a communication protocol is, for example, the LBT protocol (Listen Before Talk, or in French "listen before speaking").
- LBT protocol Listen Before Talk, or in French "listen before speaking"
- the equipment listens, in the frequency band which interests it, if another equipment transmits a signal. If after this listening, the equipment determines that the transmission channel is used by another equipment, it does not transmit a signal and waits for a predetermined period. Once this predetermined time has elapsed, the equipment again listens to the transmission channel. If after this listening the equipment determines that the transmission channel is not used, it then transmits a signal having a frequency included in the unlicensed frequency band.
- the invention meets this need by proposing a method of communication between a first base station and at least a second base station, the method being implemented by at least a first user equipment attached to the first base station and located in a radio coverage area of the second base station, the method comprising the following steps of:
- Such a communication method allows user equipment, such as a mobile terminal, located in an area of overlap of radio coverage of a first base station and a second base station, to use a frequency band shared with a higher probability of access to the frequency band while reducing the impact interference generated by communications established between user equipment and the base stations to which they are attached.
- a base station transmits radio signals omnidirectionally in order to serve a large number of user equipment simultaneously.
- a user equipment located in an area of overlap of radio coverage of two base stations, the one to which it is attached and a second base station managed by another mobile operator sees its communications transmitted using the band of disturbed shared frequencies.
- the first user equipment By modifying the transmission mode of the first base station and the second base station, to pass from an omnidirectional transmission mode to a directional transmission mode, or by beamforming (beamforming in English), the first user equipment remains in the radio coverage area of the first base station but is no longer in the coverage area of the second base station.
- the number of user equipment located in the radio coverage area of the first base station and wishing to use the frequency band is reduced, which facilitates the use of the frequency band shared by the first user equipment.
- the interference generated by the use of the frequency band shared by the user equipment attached to the second base station is reduced because the radio coverage areas of the first and second base stations do not overlap. more.
- said request to change the transmission mode of the second base station is broadcast in a first dedicated time window, said first time window reproducing periodically.
- a time window is reserved to allow the transmission of requests to change the transmission mode.
- no user equipment and no base station transmits a signal in the shared frequency band.
- the time, duration and periodicity of this time window are known to the user equipment and to the base stations.
- a user equipment when it has a request to change the transmission mode, it implements the LBT protocol before the broadcast of the request to change the transmission mode, if the schedule corresponds to that of the time window, the transmission channel is not used and the user equipment can broadcast the request to change the transmission mode.
- the communication method further comprises the following steps:
- the first base station can also receive a request to change the transmission mode sent by the second base station.
- the first base station and the second base station can both transmit requests to change the transmission mode almost simultaneously.
- said confirmation message is broadcast in a second dedicated time window, said second time window reproducing periodically.
- the first dedicated time window and the second time window comprise a plurality of time intervals, each time interval being intended to be used by user equipment for broadcasting said request for change of transmission mode or said confirmation message.
- the invention also relates to a method of transmitting a request for a change in transmission mode between a first base station and a second base station, the method being implemented by the first base station and comprising the steps following:
- the transmission method further comprises the following steps of:
- the transmission method further comprises a step of modifying the transmission mode of the first base station consisting in switching from an omnidirectional transmission mode to a directional transmission mode.
- the transmission method comprises, prior to the step of transmitting said request to change the transmission mode of the second base station to the first user equipment, a step of determining the presence of said first user equipment in the coverage area of the second base station.
- the step of determining the presence of said first user equipment in the coverage area of the second base station consists in determining a value of a power of a signal received by said first user equipment .
- the value of the power of a received signal is representative of a level of interference to which the received signal is subjected.
- the lower the strength of the received signal the higher the level of interference.
- User equipment located in the radio coverage area of the first and second base stations is user equipment receiving a signal with low power.
- the step of determining the presence of said first user equipment in the coverage area of the second base station consists of an absence of confirmation, by the first user equipment, of the reception of messages from services transmitted by the first base station.
- the invention also relates to user equipment attached to a first base station and located in a radio coverage area of a second base station, the user equipment comprising means for:
- Such equipment is for example a mobile phone or a Smartphone.
- Another object of the invention relates to a base station adapted to transmit a request for a change of transmission mode intended for at least one other base station, the base station comprising means for: transmit to at least one first user equipment attached to the base station and located in a radio coverage area of the other base station, and in a first frequency band allocated to said base station for communicating with the user equipment attached to it, a request to change the transmission mode of the other base station,
- Such a base station is for example an eNodeB (evolved Node B) when the mobile telephone network is a network conforming to standards relating to LTE Advanced, or 4G, as defined by the standardization body 3GPP (3rd Generation Patrnership Project ).
- eNodeB evolved Node B
- 4G 4th Generation
- Such a base station may be a NodeB when the mobile telephone network is a network conforming to the standards relating to the UMTS (Universal Mobile Telecommunications System), or 3G, as defined by the standardization body 3GPP.
- UMTS Universal Mobile Telecommunications System
- 3G 3th Generation
- the invention relates to a signal intended to be transmitted by a first user equipment attached to a first base station to a second user equipment attached to a second base station, the first and second user equipment being located in a radio coverage area of the first and second base stations, said signal comprising a request to change the transmission mode of the second base station transmitted by the first base station.
- the invention also relates to computer program products comprising program code instructions for implementing the methods as described above, when executed by a processor.
- the invention also relates to recording media readable by a computer on which computer programs are recorded comprising program code instructions for the execution of the steps of the methods according to the invention as described above.
- Such recording media can be any entity or device capable of storing programs.
- the supports may include a storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or else a magnetic recording means, for example a USB key or a hard disk.
- Such recording media can be transmissible media such as an electrical or optical signal, which can be routed via an electrical or optical cable, by radio or by other means, so that the program of computer it contains is executable remotely.
- the programs according to the invention can in particular be downloaded from a network, for example the Internet.
- the recording media can be an integrated circuit in which the program is incorporated, the circuit being adapted to execute or to be used in the execution of the aforementioned display control method.
- FIG. 1 represents a system in which the communication and transmission methods according to an embodiment of the invention are implemented
- FIG. 2 represents a diagram of the exchanges occurring between the base stations and the user equipment attached to them according to an embodiment of the invention
- FIG. 3 represents the system of the figure when the base stations are in the directional transmission mode
- FIG. 4 represents a time window FRQT
- FIG. 5 represents an FMCONF time window
- FIG. 6 schematically represents a base station according to an embodiment of the invention
- FIG. 7 schematically represents a user equipment according to an embodiment of the invention.
- the general principle of the present invention is to allow base stations to switch from an omnidirectional transmission mode to a directional transmission mode, or by beamforming in order to allow user equipment located in an area radio coverage of two base stations to use a frequency band which is not allocated to either of the two base stations in order to improve the quality of the communications carried out by the user equipment.
- FIG. 1 represents a system in which the methods of communication and transmission according to an embodiment of the invention are implemented.
- the system 1 comprises a first base station BTS1 belonging to a mobile telephone network of a first telecommunications operator.
- the base station BTS1 transmits radio waves omnidirectionally in a radio coverage area, or cell, Zl.
- User equipment UE1 is located in the radio coverage area Z1 of the base station BTS1.
- the user equipment UE1 is attached to the base station UE1 and communicates with the latter using a first frequency band allocated to the base station BTS1 to communicate with the user equipment which is attached to it.
- a first frequency band allocated to the base station BTS1 to communicate with the user equipment which is attached to it.
- several user devices can be attached simultaneously to the base station BTS1.
- the system 1 also includes a second base station BTS2 belonging to a mobile telephone network of a second telecommunications operator.
- the base station BTS2 transmits radio waves omnidirectionally in a radio coverage area, or cell, Z2.
- User equipment UE2 is located in the radio coverage area Z2 of the base station BTS2.
- the user equipment UE2 is attached to the base station UE2 and communicates with the latter using a second frequency band allocated to the base station BTS2 to communicate with the user equipment which is attached to it.
- a second frequency band allocated to the base station BTS2 to communicate with the user equipment which is attached to it.
- several user devices can be attached simultaneously to the base station BTS2.
- the user equipment UE1 and UE2 are located in an area of overlap of the radio coverage ZI and Z2 of the base stations BTS1 and BTS2.
- the base stations BTS1 and BTS2 are nevertheless far enough apart from one another that they cannot communicate directly with each other, even by means of a dedicated communication channel.
- the base stations BTS1 and BTS2 are for example eNodeB (evolved Node B) when the mobile telephone networks are networks conforming to the standards relating to LTE Advanced, or 4G.
- eNodeB evolved Node B
- the base stations can be NodeBs when the mobile telephone networks are networks conforming to standards relating to UMTS, or 3G.
- the base stations BTS1, BTS2 include a plurality of radio antennas.
- the shapes (directivities) of the beams associated with the respective radio signals transmitted by the base stations can be modified by modifying the operating mode of the antennas.
- An omnidirectional operating mode is a mode with omnidirectional transmission of radio signals generally based on one or more omnidirectional antennas or based on a combination of antennas not necessarily omnidirectional but whose weighted combination makes it possible to obtain an omnidirectional beam.
- a directional operating mode is a mode with directional transmission of radio signals based on directional antennas whose weighted combination makes it possible to obtain a directional beam which points in a direction determined by the weighting.
- This technique is generally called beamforming.
- the arrangement of the antennas on the same base station can be such that it makes it possible to combine them differently along a horizontal axis and along a vertical axis to obtain a beam whose direction can be adjusted both in a horizontal plane and in a plane vertical (Tilt).
- the opening of the beam changes according to the weighting of the combination.
- the shape of the emitted beam defines the coverage.
- the base stations BTS1 and BTS2 communicate with the user equipment attached to them by transmitting and receiving radio signals whose frequency is included in a first frequency band BF1 allocated to the base station BTS1 and a second frequency band BF2 assigned to the BTS2 base station.
- the frequency bands BF1 and BF2 are distinct and do not overlap, thus limiting interference when the user equipment UE1 and UE2, located in the area of overlap of the radio coverage of base stations BTS1 and BTS2, communicate with the base station to which they are attached by means of radio signals whose frequency is included in the frequency band BF1, and respectively in the frequency band BF2.
- the base stations BTS1 and BTS2 transmit and receive radio signals having a frequency included in a third frequency band BF3.
- Such a frequency band BF3 is for example an unlicensed frequency band, that is to say one not allocated to a particular telephone operator or to a specific use.
- the frequency band BF3 is a shared frequency band allocated to the base stations BTS1 and BTS2.
- the frequency bands BF1 and BF3 or BF2 and BF3 can be used simultaneously by a base station to communicate with user equipment attached to it.
- FIG. 2 represents a diagram of the exchanges occurring between the base stations BTS1 and BTS2 and the user equipment UE1, UE2 which are attached to them allowing these different devices to communicate simultaneously by transmitting radio signals whose frequency is included in the band frequency BF3.
- an arrow with a double line represents an emission of a radio signal in the frequency band BF1
- an arrow with a double dashed line represents an emission of a radio signal in the frequency band BF2
- an arrow with a single line represents an emission of a radio signal in the frequency band BF3.
- the base station BTS1 selects a user equipment UE1 so that it serves as a relay in order to allow the exchange of messages with the base station BTS2.
- Such user equipment UE1 is located in the area of overlap of the radio coverage of the base station BTS1 and of the base station BTS2.
- the base station BTS1 determines the presence of the user equipment UE1 in the area of overlap of the radio coverage of the base stations BTS1 and BTS2 by determining a value of a power of one radio signal transmitted by the base station BTS1 and received by the user equipment U El or RSSI (Received Signai Strength indication).
- the value of the power of a received radio signal is representative of an interference level to which the received radio signal is subjected.
- the lower the strength of the received radio signal the higher the level of interference.
- User equipment located in the area of coverage of radio coverage of base stations BTS1 and BTS2 is user equipment receiving a radio signal with low power.
- the base station BTS1 determines the presence of the user equipment UE1 in the area of overlap of the radio coverage of the base stations BTS1 and BTS2 by detecting an absence of confirmation, by the user equipment UE1, of the reception of service messages transmitted by the base station BTS1.
- the exchanges taking place between the base station BTS1 and the user equipment UE1 are carried out by emission of a radio signal whose frequency is included in the frequency band BF1.
- the base station BTS2 implements step 200 in order to select a user equipment UE2 so that it serves as a relay in order to allow the exchange of messages with the base station BTS1.
- the exchanges taking place between the base station BTS2 and the user equipment UE2 are done by emission of a radio signal whose frequency is included in the frequency band BF2.
- the base station BTS1 determines that criteria for triggering a change of transmission mode of the base station BTS1 are fulfilled.
- the base station BTS1 is in omnidirectional transmission mode and initiates a change of transmission mode to switch to a directional transmission mode.
- the base station BTS1 is in directional transmission mode and initiates a change of transmission mode to switch to an omnidirectional transmission mode.
- the steps implemented are the same.
- the criteria triggering a change in transmission mode are for example the number of user equipment present in the area of overlap of the radio coverage of the base stations BTS1 and BTS2. For example, if there are more than a certain number of user devices present in the area of coverage of the radio coverage of the base stations BTS1 and BTS2, then the base station BTS1 initiates a change of transmission mode towards a directional transmission mode. If there are less than a certain number of user devices present in the area of coverage of the radio coverage of the base stations BTS1 and BTS2, then the base station BTS1 initiates a change of transmission mode to a mode omnidirectional transmission.
- Other criteria may for example be a level of interference determined by the base station by means of RSSI measurements.
- antennas of the base station BTS1, BTS2 are configured so that radio signals are transmitted in all directions.
- a user terminal UE1 in the coverage area Z1, Z2 of the base station BTS1, BTS2 it can receive the radio signals transmitted by the base station BTS1, BTS 2.
- antennas of the base station BTS1, BTS2 are configured so that radio signals are transmitted in a particular direction.
- the radio wave beam thus emitted covers a specific part of the coverage area Z1, Z2 of the omnidirectional operating mode of the base station BTS1, BTS2 defining a new coverage area Z11, Z12. If a user terminal UE1 is in the coverage area Z11, Z12 of such a beam, it can receive the radio signals transmitted by the base station BTS1, BTS2 in the frequency band BF3 while undergoing a minimum of interference.
- switching from one transmission mode to another amounts to modifying the configuration of the antennas of the base station BTS1, BTS2.
- the base station BTS1 transmits a request for change of transmission mode RQT from the base station BTS2 to the user equipment UE1 selected to serve as a relay. If several user devices have been selected to serve as a relay, they all receive the request to change the transmission mode from the BTS2 base station.
- the request to change the transmission mode of the base station BTS2 is sent by the base station BTS1 in the frequency band BF1.
- the user equipment UE1 On receipt of the request to change the transmission mode RQT from the base station BTS2, and in a step 203, the user equipment UE1 listens, in accordance with the LBT protocol, if another user equipment transmits a radio signal in the band BF3 frequencies because the BF3 frequency band is a shared access frequency band.
- a step 204 when after this listening, the user equipment UE1 determines that the frequency band BF3 is not used, it broadcasts the request for change of transmission mode RQT of the base station BTS2 in the frequency band BF3.
- a time window FRQT dedicated to the broadcasting of the request to change the transmission mode RQT of the base station BTS2 is defined.
- Such a time window FRQT, represented in FIG. 4, is reproduced periodically, for example every second.
- the periodicity T of the FRQT time window is known to the various devices of the telephony networks concerned, whether they are base stations or user equipment.
- Each time window FRQT is divided into a plurality of time intervals here four IT1, IT2, IT3 and IT4.
- the user equipment UE1 selects one of the time intervals IT1-IT4 during which the request for change of transmission mode RQT of the base station BTS2 is broadcast in the BF3 frequency band.
- a time window FRQT dedicated to the broadcasting of the request to change the transmission mode RQT of the base station BTS2 makes it possible to reserve time slots during which the frequency band BF3 is not used.
- a user equipment UE1 having a request to change the transmission mode RQT of the base station BTS2 to be transmitted is guaranteed to be able to transmit a signal in the frequency band BF3 without risk of disturbances.
- the times of the FRQT time windows being known, only the user equipment serving as a relay and having received the request to change the RQT transmission mode from the base station BTS2 are authorized to broadcast radio signals.
- a user equipment UE2 attached to the base station BTS2 intercepts the request for change of transmission mode RQT of the base station BTS2 broadcast in the frequency band BF3 and this whatever the interval IT1-IT4 of the FRQT time window in which it was broadcast.
- the user equipment UE2 transmits the request for change of transmission mode RQT from the base station BTS2 to the base station BTS2. If several user devices have been selected to serve as a relay, they all transmit the request to change the RQT transmission mode from the base station BTS2 to the base station BTS2. The request to change the transmission mode of the base station BTS2 is sent by the user equipment UE2 in the frequency band BF2.
- the base station BTS2 transmits a message for confirming the change of transmission mode MCONF to the user equipment UE2 selected to serve as a relay. If several user devices have been selected to serve as a relay, they all receive the message confirming the change of MCONF transmission mode. The message confirming the change of transmission mode MCONF is sent by the base station BTS2 in the frequency band BF2.
- the base station BTS2 switches to the directional transmission mode.
- a step 209 on reception of the message for confirming the change of transmission mode MCONF, the user equipment UE2 listens, in accordance with the LBT protocol, if another user equipment transmits a radio signal in the frequency band BF3.
- the user equipment UE2 determines that the frequency band BF3 is not used, it broadcasts the message of confirmation of change of transmission mode MCONF in the band of frequency BF3.
- a time window FMCONF dedicated to the broadcast of the message confirming the change of transmission mode MCONF is defined.
- Such a time window FMCONF represented in FIG. 5, reproduces periodically, for example every second.
- the periodicity T of the FMCONF time window is known to the various devices of the telephony networks concerned, whether they are base stations or user equipment.
- Each FMCONF time window is divided into a plurality of time intervals here four IT-1, IT-2, IT-3 and IT-4.
- the user equipment UE2 selects one of the time intervals IT-1-IT-4 during which the message for confirming the change of transmission mode MCONF is broadcast in the BF3 frequency band.
- an FCONF time window dedicated to broadcasting the message confirming the change of transmission mode MCONF makes it possible to reserve time slots during which the frequency band BF3 is not used.
- a user equipment UE2 having a message to confirm the change of transmission mode MCONF to be transmitted is guaranteed to be able to transmit a signal in the frequency band BF3 without risk of disturbances, in particular without interfering with an occurrence of a time window FRQT .
- the times of the FRQT and FMCONF time windows being known, only the user equipment serving as a relay and having received the message confirming the change of transmission mode MCONF are authorized to broadcast radio signals during an FCONF time window.
- the user equipment UE1 attached to the base station BTS1 intercepts the confirmation message of change of transmission mode MCONF broadcast in the frequency band BF3 and this whatever the interval IT-1-IT- 4 of the FMCONF time window in which it was broadcast.
- the user equipment UE1 transmits the message for confirming the change of transmission mode MCONF to the base station BTS1. If several user devices have been selected to serve as a relay, they all transmit the message confirming the change of transmission mode MCONF to the base station BTS1. The message for confirming the change of transmission mode MCONF is sent by the user equipment UE1 in the frequency band BF1.
- the base station BTS1 also switches to the directional transmission mode.
- the method according to the invention can, symmetrically, be initiated by the base station BTS2.
- the base stations STB1 and STB2 in order to switch to an omnidirectional transmission mode, can again implement the steps of the method described above.
- the base stations STB1 and STB2 switch to the omnidirectional transmission mode after the expiration of a predetermined duration.
- FIG. 6 schematically represents a base station BTS1, BTS2 according to an embodiment of the invention.
- the base station BTS1, BTS2 can comprise at least one processor 601, a storage unit 602, an input device 603, a display device 604, an interface 605, and at least one network interface 606 which are connected between them through a bus 607.
- the constituent elements of the base station BTS1, BTS2 can be connected by means of a connection other than a bus.
- the processor 601 controls the operations of the base station BTS1, BTS2.
- the storage unit 202 stores at least one program for the implementation of a method according to an embodiment of the invention to be executed by the processor 601, and various data, such as parameters used for calculations performed by the processor 601, intermediate data of calculations carried out by the processor 601, etc.
- the processor 601 can be formed by any known and appropriate hardware or software, or by a combination of hardware and software.
- the processor 601 can be formed by dedicated hardware such as a processing circuit, or by a programmable processing unit such as a central processing unit (Central Processing Unit) which executes a program stored in a memory of this one.
- Central Processing Unit central Processing Unit
- the storage unit 602 can be formed by any suitable means capable of storing the program or programs and data in a computer readable manner. Examples of storage unit 602 include non-transient computer readable storage media such as semiconductor memory devices, and magnetic, optical or magneto-optical recording media loaded into a read and write unit. 'writing.
- the input device 603 can be formed by a keyboard, a pointing device such as a mouse to be used by a user to enter commands.
- the display device 604 can also be formed by a display module, such as for example a graphical user interface or GUI (for Graphical User Interface).
- the input device 603 and the Display device 604 can be formed integrally by means of a touch screen, for example.
- Interface 605 provides an interface between the base station BTS1, BTS2 and an external device. Interface 605 can communicate with the external device via a wired or wireless connection.
- At least one network interface 606 provides a connection between the base station BTS1, BTS2 and user equipment, via a communication network.
- FIG. 7 schematically represents a user equipment UE1, UE2 according to an embodiment of the invention.
- the user equipment UE1, UE2 can comprise at least one hardware processor 701, a storage unit 702, an input device 703, a display device 704, an interface 705, at least one network interface 706 which are connected between them through a bus 707.
- the constituent elements of the user equipment UE1, UE2 can be connected by means of a connection other than a bus.
- the processor 701 controls the operations of the user equipment UE1, UE2.
- the storage unit 702 stores at least one program for the implementation of one according to an embodiment of the invention to be executed by the processor 701, and various data, such as parameters used for calculations performed by the processor 701, intermediate data of calculations performed by processor 701, etc.
- the processor 701 can be formed by any known and appropriate hardware or software, or by a combination of hardware and software.
- the processor 701 can be formed by dedicated hardware such as a processing circuit, or by a programmable processing unit such as a central processing unit (Central Processing Unit) which executes a program stored in a memory of this one.
- Central Processing Unit central Processing Unit
- the storage unit 702 can be formed by any suitable means capable of storing the program or programs and data in a manner readable by a computer.
- Examples of storage unit 702 include non-transient computer readable storage media such as semiconductor memory devices, and magnetic, optical or magneto-optical recording media loaded into a read and write unit. 'writing.
- the input device 703 can be formed by a keyboard, a pointing device such as a mouse to be used by a user to enter commands.
- the display device 704 can also be formed by a display module, such as for example a graphical user interface or GUI (for Graphical User Interface).
- the input device 703 and the display device 704 can be formed integrally by means of a touch screen, for example.
- the interface 205 provides an interface between the user equipment UE1, UE2 and an external device such as another user equipment.
- the 705 interface can communicate with the external device via a wired or wireless connection.
- At least one network interface 706 provides a connection between the user equipment UE1, UE2 and a base station BTS1, BTS2, via a communication network.
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Abstract
Description
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1857349A FR3084987A1 (fr) | 2018-08-07 | 2018-08-07 | Procede de communication entre deux station de bases utilisant une bande de frequences partagee, station de base et equipement utilisateur correspondants. |
PCT/FR2019/051538 WO2020030859A1 (fr) | 2018-08-07 | 2019-06-24 | Procédé de communication entre deux station de bases utilisant une bande de fréquences partagée, station de base et équipement utilisateur correspondants |
Publications (1)
Publication Number | Publication Date |
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EP3834539A1 true EP3834539A1 (fr) | 2021-06-16 |
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Application Number | Title | Priority Date | Filing Date |
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EP19742877.4A Pending EP3834539A1 (fr) | 2018-08-07 | 2019-06-24 | Procédé de communication entre deux station de bases utilisant une bande de fréquences partagée, station de base et équipement utilisateur correspondants |
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US (1) | US12022450B2 (fr) |
EP (1) | EP3834539A1 (fr) |
FR (1) | FR3084987A1 (fr) |
WO (1) | WO2020030859A1 (fr) |
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US20220376921A1 (en) * | 2021-05-21 | 2022-11-24 | At&T Mobility Ii Llc | Blockchain authenticator for dynamic spectrum sharing and blockchain cybersecurity services |
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WO2010107221A2 (fr) * | 2009-03-16 | 2010-09-23 | 엘지전자 주식회사 | Procédés et appareil permettant de supporter l'agrégation de porteuses |
JP5585661B2 (ja) * | 2010-11-09 | 2014-09-10 | 富士通株式会社 | 無線通信システム、通信制御装置、基地局および無線通信方法 |
US8848700B2 (en) * | 2011-09-30 | 2014-09-30 | Electronics And Telecommunications Research Institute | Method for device-to-device communication based on cellular telecommunication system |
CN103517320B (zh) * | 2012-06-21 | 2019-02-15 | 中兴通讯股份有限公司 | 认知无线电***邻区关系、基站及邻区关系的控制方法 |
US9094899B2 (en) * | 2013-05-28 | 2015-07-28 | Rivada Networks, Llc | Cell selection in dynamic spectrum arbitrage system |
WO2016172840A1 (fr) * | 2015-04-28 | 2016-11-03 | Mediatek Inc. | Mesures de mobilité robuste et coordination inter-cellulaire dans des petites cellules à ondes millimétriques |
CN107888256B (zh) * | 2016-09-30 | 2022-12-02 | 中兴通讯股份有限公司 | 数据传输、接收方法、装置、基站及终端 |
US10411795B2 (en) * | 2017-03-14 | 2019-09-10 | Qualcomm Incorporated | Coverage enhancement mode switching for wireless communications using shared radio frequency spectrum |
-
2018
- 2018-08-07 FR FR1857349A patent/FR3084987A1/fr not_active Withdrawn
-
2019
- 2019-06-24 WO PCT/FR2019/051538 patent/WO2020030859A1/fr unknown
- 2019-06-24 EP EP19742877.4A patent/EP3834539A1/fr active Pending
- 2019-06-24 US US17/266,558 patent/US12022450B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US12022450B2 (en) | 2024-06-25 |
FR3084987A1 (fr) | 2020-02-14 |
US20210298021A1 (en) | 2021-09-23 |
WO2020030859A1 (fr) | 2020-02-13 |
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