WO2015113247A1 - Équipement d'utilisateur pour une communication par connexion directe, station de base, et procédé d'établissement d'une communication par connexion directe - Google Patents

Équipement d'utilisateur pour une communication par connexion directe, station de base, et procédé d'établissement d'une communication par connexion directe Download PDF

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Publication number
WO2015113247A1
WO2015113247A1 PCT/CN2014/071756 CN2014071756W WO2015113247A1 WO 2015113247 A1 WO2015113247 A1 WO 2015113247A1 CN 2014071756 W CN2014071756 W CN 2014071756W WO 2015113247 A1 WO2015113247 A1 WO 2015113247A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
unlicensed spectrum
base station
control signal
spectrum
Prior art date
Application number
PCT/CN2014/071756
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English (en)
Chinese (zh)
Inventor
张健
曾清海
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201480001026.6A priority Critical patent/CN105103645B/zh
Priority to PCT/CN2014/071756 priority patent/WO2015113247A1/fr
Publication of WO2015113247A1 publication Critical patent/WO2015113247A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a user equipment, a base station, and a direct communication establishment method for direct connection communication.
  • Background technique
  • the spectrum includes licensed spectrum and unlicensed spectrum, where the unlicensed or unlicensed spectrum resources are larger than the licensed spectrum resources.
  • the embodiments of the present invention provide a user equipment, a base station, and a direct communication establishment method for direct communication, so as to implement direct communication between D2Ds in an unlicensed spectrum, so as to effectively utilize unlicensed spectrum resources and improve direct communication users. Available spectrum bandwidth.
  • the embodiment of the present invention provides a user equipment, where the user equipment is configured to perform direct communication on an unlicensed spectrum, and the user equipment is a first user equipment, including:
  • a first receiver configured to receive, by using a configuration spectrum, a control signal sent by the second user equipment, where the first processor is connected to the first receiver, and configured to measure the direct communication on the unlicensed spectrum according to the control signal Wireless parameters, and generate measurement reports for measurement results;
  • the first transmitter is connected to the first processor, and configured to send the measurement report to the base station, so that the base station allocates the first user equipment and the second user equipment according to the measurement report. Radio resources for data communication.
  • the first processor determines that the unlicensed spectrum is available, triggering, by the first receiver, to receive the The control signal sent by the second user equipment.
  • the first processor determines that the unlicensed spectrum is available, including:
  • the first processor detects that the first receiver receives the indication information sent by the base station, and the indication information is used to indicate that the unlicensed spectrum is available; or
  • the first processor determines that the unlicensed spectrum is available according to its own measurement result of the wireless parameter of the direct communication on the unlicensed spectrum.
  • the first receiver is specifically configured to: Receiving, by the licensed spectrum, the control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the first processor is further configured to:
  • the first receiver is specifically configured to: Receiving, by the unlicensed spectrum, the control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the first processor when the unlicensed spectrum includes multiple frequencies, the first processor is configured according to the unlicensed spectrum The range of the selected frequency range is selected for the transmission of the control signal.
  • the seventh possible implementation in the first aspect In the current mode, if the first user equipment and the second user equipment are in different base stations, the first processor is further configured to:
  • the first transmitter is specifically configured to: Periodically transmitting the measurement report to the base station; or
  • the embodiment of the present invention supports a direct connection communication on a non-entitled spectrum by a user equipment of the base station, where the base station includes:
  • a second receiver configured to receive a measurement report sent by the user equipment, where the measurement report is generated by the user equipment according to the radio parameter of the direct communication on the unlicensed spectrum measured by the user equipment;
  • a second processor connected to the second receiver, configured to determine, according to the measurement report, that the user equipment is suitable for direct communication, and allocate the wireless resource for data communication to the user equipment.
  • the base station further includes a second transmitter, where the second transmitter is connected to the second processor, the second processor Specifically used for:
  • the second processor is further configured to:
  • the second receiver Before the second receiver receives the measurement report sent by the user equipment, configuring carrier aggregation for the user equipment, where the primary serving cell uses the licensed spectrum, and the secondary serving cell uses the unlicensed spectrum.
  • the second processor is configured to:
  • the second receiver Before the second receiver receives the measurement report sent by the user equipment, configuring the user equipment to periodically send and/or receive a control signal, where the control signal includes a peer signal and a discovery signal; or
  • the second receiver Before the second receiver receives the measurement report sent by the user equipment, configuring a mask, so that the user equipment receives the unlicensed spectrum available information indicated by the base station or the user equipment determines that the unlicensed spectrum is available
  • the control signal is transmitted and/or received.
  • the second receiver Before receiving the measurement report sent by the user equipment, the second receiver performs the interaction of the unlicensed spectrum occupation information with another base station where another user equipment is in direct communication, and implements the inter-base station peer according to the interaction result. And notifying the user equipment to perform direct communication.
  • the embodiment of the present invention provides a user equipment, where the user equipment is directly connected to the unlicensed spectrum, and the user equipment is the first user equipment, including:
  • a first receiving module configured to receive, by using a configuration spectrum, a control signal sent by the second user equipment
  • the first processing module is connected to the first receiving module, and configured to measure the direct communication on the unlicensed spectrum according to the control signal Wireless parameters, and generate measurement reports for measurement results
  • the first sending module is connected to the first processing module, and configured to send the measurement report to the base station, so that the base station allocates the first user equipment and the second user equipment according to the measurement report. Radio resources for data communication.
  • the first processing module determines that the unlicensed spectrum is available, triggering, by the first receiving module, the receiving, by using the configured spectrum The control signal sent by the second user equipment.
  • the first processing module determines that the unlicensed spectrum is available, including:
  • the first processing module detects that the indication information sent by the base station is received, and the indication information is used to indicate that the unlicensed spectrum is available; or
  • the first processing module determines that the unlicensed spectrum is available according to its own measurement result of the wireless parameter of the direct communication on the unlicensed spectrum.
  • the first receiving module is specifically configured to: Receiving, by the licensed spectrum, the control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the first processing module is further configured to:
  • the first receiving module is specifically configured to: Receiving, by the unlicensed spectrum, the control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the first processing module when the unlicensed spectrum includes multiple frequencies, is configured according to the unlicensed spectrum The range of the selected frequency range is selected for the transmission of the control signal.
  • the seventh possible implementation in the third aspect In the current mode, if the first user equipment and the second user equipment are in different base stations, the first processor module is used to:
  • the first sending module is specifically configured to: Periodically transmitting the measurement report to the base station; or
  • any one of the first to the eighth possible implementation manners of the third aspect in a ninth possible implementation manner of the third aspect, the homophonic signal and the discovery signal Located in different frequency domain resources in the configured spectrum.
  • an embodiment of the present invention provides a base station, which supports a user equipment under its jurisdiction to perform direct connection communication on a non-entitled spectrum, where the base station includes:
  • a second receiving module configured to receive a measurement report sent by the user equipment, where the measurement report is generated by the user equipment according to the radio parameter of the direct communication on the unlicensed spectrum measured by the user equipment;
  • the second receiving module is connected, and according to the measurement report, determining that the user equipment is suitable for direct communication, and allocating radio resources for data communication to the user equipment.
  • the base station further includes a second sending module, where the second sending module is connected to the second processing module, and the second processing module is Specifically used for:
  • the second sending module is configured to send the indication information to the user equipment, where the indication information is used to indicate that the unlicensed spectrum is available use.
  • the second processing module is further configured to:
  • the carrier aggregation is configured for the user equipment, where the primary serving cell uses the licensed spectrum, and the secondary serving cell uses the unlicensed spectrum.
  • the second processing module is further configured to: Before the second receiving module receives the measurement report sent by the user equipment, configuring the user equipment to periodically send and/or receive a control signal, where the control signal includes a peer signal and a discovery signal; or
  • the second receiving module Before the second receiving module receives the measurement report sent by the user equipment, configuring a mask, so that the user equipment receives the unlicensed spectrum available information indicated by the base station, or the user equipment determines that the unlicensed spectrum is available.
  • the control signal is transmitted and/or received.
  • the second processing module is further configured to:
  • the second receiving module Before the second receiving module receives the measurement report sent by the user equipment, performing interaction with the unlicensed spectrum occupation information by another base station where another user equipment in which the direct communication is performed, and implementing the inter-base station peer according to the interaction result. And notifying the user equipment to perform direct communication.
  • the embodiment of the present invention provides a direct connection communication establishment method, which is applicable to user equipment performing direct connection communication on an unlicensed spectrum, and the method includes:
  • the first user equipment receives the control signal sent by the second user equipment by configuring the spectrum; the first user equipment measures the wireless parameter of the direct communication on the unlicensed spectrum according to the control signal, and generates a measurement report by using the measurement result;
  • the first user equipment sends the measurement report to the base station, so that the base station allocates radio resources for data communication to the first user equipment and the second user equipment according to the measurement report.
  • the receiving, by the first user equipment, the control signal that is sent by the second user equipment by using a licensed spectrum includes: And if the first user equipment determines that the unlicensed spectrum is available, the first user equipment receives the control signal sent by the second user equipment by using the configured spectrum.
  • the first user equipment determines that the unlicensed spectrum is available, including:
  • the first user equipment determines that the unlicensed spectrum is available according to its own measurement result of the wireless parameter of the direct communication on the unlicensed spectrum.
  • the first user equipment is configured to receive spectrum
  • the control signal sent by the second user equipment includes:
  • the first user equipment receives the control signal sent by the second user equipment by using a licensed spectrum, where the control signal includes a peer signal and a discovery signal.
  • the method further includes:
  • the first user equipment acquires the notification that the unlicensed spectrum is available from the base station where the first user equipment is located, determines the receiving time of the control signal, and receives, by using the licensed spectrum, the second user equipment to send the receiving time.
  • a control signal where the notification is a result of performing an unlicensed spectrum occupation information interaction between a base station where the first user equipment and the second user equipment are located, and is used to indicate the first user equipment and the second
  • the user equipment performs direct communication.
  • control signal sent by the second user equipment includes:
  • the control signal sent by the second user equipment by using the unlicensed spectrum, where the control signal includes a peer signal and a discovery signal.
  • the control signal includes a peer signal and a discovery signal.
  • the method further includes:
  • the first user equipment acquires the notification that the unlicensed spectrum is available from the base station where the first user equipment is located, determines a receiving time of the control signal, and receives, by using the unlicensed spectrum, the second user equipment, by using the unlicensed spectrum at the receiving time.
  • the control signal where the notification is a result of performing an unlicensed spectrum occupation information interaction between the base station where the first user equipment and the second user equipment are located, and is used to indicate the first user equipment and the The two user equipments perform direct communication.
  • the first user equipment sends the measurement Reported to the base station, including:
  • the first user equipment periodically sends the measurement report to the base station;
  • the measurement report is sent to the base station, where the preset condition includes that the measurement result is greater than or less than a preset threshold.
  • the embodiment of the present invention provides a direct connection communication establishment method, which is applicable to user equipment performing direct connection communication on an unlicensed spectrum, and the method includes:
  • the base station determines, according to the measurement report, that the user equipment is suitable for direct communication, and allocates a radio resource for data communication to the user equipment.
  • the determining, by the base station, that the user equipment is suitable for direct communication, according to the measurement report includes:
  • the base station determines, according to the measurement report, that the unlicensed spectrum is available, and the base station sends indication information to the user equipment, where the indication information is used to indicate that the unlicensed spectrum is available.
  • the method before the receiving, by the base station, the measurement report sent by the user equipment, the method further includes:
  • the base station configures carrier aggregation for the user equipment, where the primary serving cell uses the licensed spectrum, and the secondary serving cell uses the unlicensed spectrum.
  • the base station receives the measurement report sent by the user equipment Previously, the method further includes:
  • the base station configures the user equipment to periodically transmit and/or receive a control signal, where the control signal includes a peer signal and a discovery signal; or
  • the base station configures a mask, so that the user equipment sends and/or receives the control signal when receiving the unlicensed spectrum available information indicated by the base station or the user equipment determines that the unlicensed spectrum is available.
  • the base station performs unlicensed spectrum occupancy information interaction with another base station where another user equipment in which direct communication is located, and implements inter-base station peering according to the interaction result, and notifies the user equipment to perform direct connection communication.
  • the LTE system is applied to an unlicensed spectrum to effectively utilize unlicensed spectrum resources to improve the available spectrum bandwidth of users in the LTE system.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
  • Embodiment 1 of a base station according to the present invention is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • Embodiment 2 of a base station according to the present invention is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • FIG. 5 is a diagram showing an example of a peer-to-peer signal on a licensed spectrum of an LTE system
  • FIG. 6 is a diagram showing an example of a signal found on a licensed spectrum of an LTE system
  • FIG. 7 is a diagram showing an example of the structure between a neighboring base station and its respective user equipments
  • FIG. 8 is a diagram showing an example of a structure between a carrier aggregation cell and its respective user equipments
  • FIG. 9 is a diagram showing an example of a peer-to-peer signal on an unlicensed spectrum of an LTE system
  • FIG. 10 is a diagram showing an example of a signal found on an unlicensed spectrum of an LTE system
  • Embodiment 11 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention.
  • Embodiment 3 of a base station according to the present invention is a schematic structural diagram of Embodiment 3 of a base station according to the present invention.
  • FIG. 13 is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
  • Embodiment 14 is a flowchart of Embodiment 1 of a method for establishing direct connection communication according to the present invention
  • Embodiment 15 is a flowchart of Embodiment 2 of a method for establishing direct connection communication according to the present invention
  • FIG. 16 is a flowchart of Embodiment 3 of a method for establishing direct connection communication according to the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the embodiments of the present invention are applicable to direct communication in an unlicensed spectrum, and the LTE system and the wifi system are used in the case of unlicensed spectrum coexistence as an example, and are also applicable to scenarios in which other systems coexist.
  • the LTE system is taken as an example, and the disclosed method is also applicable to a Universal Mobile Telecommunications System (UMTS) or a Global System for Mobile communication (GSM).
  • UMTS Universal Mobile Telecommunications System
  • GSM Global System for Mobile communication
  • CDMA Code Division Multiple Access 2000.
  • the LTE base station can be generally classified into a micro base station (Pico eNB), a small base station (Micro or small eNB), or a macro base station (macro eNB) according to different transmission power and downlink coverage, wherein the small base station and the micro base station are more suitable.
  • Unlicensed spectrum is used, because its transmit power is small, and interference to different systems is easier to control flexibly.
  • the use of unlicensed spectrum by macro base stations generally requires beamforming technology to avoid causing large coverage. Widespread interference.
  • the LTE base station according to the embodiment of the present invention is also applicable to the above various base stations.
  • an LTE system uses an unlicensed spectrum or uses a licensed spectrum of another system as a secondary user, there may be a different system in the coverage area of the base station, such as a Wireless Fidelity (wifi) system or a television system, using the same frequency band.
  • Unlicensed spectrum or TV white space (TVWS) there may be co-channel interference in the common coverage area of the LTE system and the wifi system, for example, when the coverage of the LTE system and the wifi system overlap and the frequencies overlap. If the LTE system and the wifi system communicate in their respective systems at overlapping frequency ranges, they may cause co-channel interference.
  • the LTE system and the wifi system need to cooperate between systems or the devices of each system share the unlicensed spectrum through detection and avoidance, so that each system can communicate normally.
  • the LTE system uses the licensed spectrum of other systems as a secondary user
  • the priority of the television system as the primary user is higher than that of the LTE system as the secondary user, and the LTE system only does not occupy the television system.
  • TVWS can only be used when TVWS, and once the LTE system detects that the TV system is starting to use TVWS, it needs to immediately evade and enter the silent period, or reduce the transmission power to the specified range without affecting the normal operation of the TV system.
  • the LTE base station and the user equipment communicate by carrier aggregation (Carrier Aggregation, CA), and the secondary cell (SCell) uses the unlicensed spectrum as an example, and is also applicable to the SCell.
  • CA Carrier Aggregation
  • FIG. 1 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
  • the embodiment of the invention provides a user equipment, which is suitable for direct communication on an unlicensed spectrum, and can be applied to public security and commercial purposes, and has a peer-to-peer communication between devices, local broadcast, and user equipment relay communication. Wait.
  • the user equipment is a first user equipment, where "first" and "second" in any embodiment of the present invention only distinguish different devices or modules in direct communication, for example, first user equipment and second
  • the user equipment is a different user equipment in the direct communication.
  • the user equipment 10 includes: a first receiver 11, a first processor 12, and a first transmitter 13.
  • the first receiver 11 is configured to receive a control signal sent by the second user equipment by configuring the spectrum.
  • the first processor 12 is connected to the first receiver 11 and configured to measure the direct communication on the unlicensed spectrum according to the control signal.
  • the wireless parameter is used to generate a measurement report
  • the first transmitter 13 is connected to the first processor 12, and configured to send a measurement report to the base station, so that the base station allocates the first user equipment and the second user equipment according to the measurement report.
  • the configured spectrum may be an authorized spectrum of the LTE system or an unlicensed spectrum.
  • the LTE system first listens to whether the spectrum is idle, that is, "Listen Before Talk (LBT)" to avoid interference with other users who are using the unlicensed spectrum.
  • LBT Listen Before Talk
  • the unlicensed spectrum is not occupied by the heterogeneous system, it can be acquired by the SCdl as an additional radio resource for communicating with the user equipment.
  • LBT Listen Before Talk
  • the unlicensed spectrum is not occupied by the heterogeneous system, it can be acquired by the SCdl as an additional radio resource for communicating with the user equipment.
  • the spectrum regulations after the LTE system acquires the unlicensed spectrum for a period of time, it needs to temporarily release the spectrum resources to give the coexisting different system the opportunity to obtain the unlicensed spectrum, or the LTE system encounters strong interference in the unlicensed band.
  • the spectrum resources can also be temporarily released in other cases. After the LTE system releases the spectrum resources, it needs to
  • the control signal is a signaling interaction between the user equipment 10 before the data transmission in the direct communication, including the peer signal and the discovery signal, wherein the peer signal may include at least a D2D primary synchronization signal (referred to as: D2D PSS) can also include D2D secondary synchronization signal (D2D secondary synchronization signal, DHD: D2D SSS).
  • D2D PSS D2D primary synchronization signal
  • D2D secondary synchronization signal D2D secondary synchronization signal
  • the sequence design of the reference signal can refer to the main synchronizing signal PSS and the auxiliary synchronizing signal SSS of the LTE cell communication mode
  • the discovery signal may be a Demodulation Reference Signal (DMRS), a Sounding Reference Signal (SRS), or a dedicated preamble.
  • the radio resources may be allocated by the base station to the user equipment 10 of the direct communication, or may be allocated to the user equipment 10 of the direct communication by the master device; the manner of allocating the radio resources includes dynamic signaling allocation and semi-
  • the LTE system is applied to the unlicensed spectrum to effectively utilize the unlicensed spectrum resources and improve the available spectrum bandwidth of the users in the LTE system, because the D2D direct communication in the LTE system does not support the unlicensed spectrum in the LTE system.
  • the acquisition of the unlicensed spectrum may be discontinuous in time and frequency, and there is a certain intermittent , the sense of spectrum of user equipment for unlicensed spectrum in direct communication There are also certain errors and delays in the knowledge or spectrum detection. In some cases, the reliability of the homogenous signal and/or the discovery signal of the user equipment in the direct communication is reduced, the error and delay of the data communication are increased, and the utilization of the spectrum resource is reduced.
  • a user equipment that performs direct communication that is, the first user equipment, receives the other user equipment in the direct communication, that is, the second user equipment, by using the configuration spectrum pre-configured by the base station.
  • the control signal thereby improving the reliability of the control signals in the direct communication, for example, the homology signal and the discovery signal, and reducing the communication delay.
  • the configured spectrum is the licensed spectrum of the LTE system
  • the licensed spectrum is exclusively occupied by the LTE system or the LTE system has the highest priority, so the reliability of the configured spectrum is high
  • the spectrum is configured as an unlicensed spectrum
  • the unlicensed spectrum is wireless
  • the first user equipment receives the control signal on the configured spectrum, and the second user equipment sends the control signal in the configured spectrum, so the reliability of the configured spectrum is high.
  • the first user equipment receives the control signal on the configured spectrum, and the second user equipment sends the control signal in the configured spectrum; or the first user equipment according to the self
  • the measurement result is that when the wireless parameter of the unlicensed spectrum is determined, the control signal is received on the configured spectrum, and the second user equipment determines, according to the measurement result of the self, the wireless parameter of the unlicensed spectrum to send the control signal on the configured spectrum.
  • the first receiver 11 may receive all or part of the control signal transmitted by the second user equipment.
  • the first processor 12 determines that the unlicensed spectrum is available, the first receiver 11 is triggered to receive the control signal sent by the second user equipment by configuring the spectrum.
  • the first processor 12 can determine that the unlicensed spectrum is available by:
  • the first processor 12 detects that the first receiver 11 receives the indication information sent by the base station, and the indication information is used to indicate that the unlicensed spectrum is available;
  • the first processor 12 determines that the unlicensed spectrum is available based on its own measurement of the wireless parameters of the direct communication on the unlicensed spectrum.
  • the radio parameter on which the unlicensed spectrum is available may be determined to be lower than the radio parameter on which the non-authorized spectrum radio parameter is determined to be appropriate.
  • Unlicensed spectrum can be used in at least two situations: One case is that the unlicensed spectrum is idle and not occupied by other wireless access systems; one case is that although other wireless access systems occupy unlicensed bands, they are away from the base station and / Or the user equipment is far away or the power is low. The unlicensed spectrum can still be used between the base station and the user equipment or between the user equipments. The wireless access system causes serious interference.
  • the first user equipment sends and/or receives control signals according to the available states of the unlicensed spectrum in the following two manners, thereby saving radio resources on the configured spectrum and reducing battery consumption and power consumption of the first user equipment.
  • the direct communication between the user equipment needs to work in cooperation with the network equipment.
  • the base station and the user equipment work together.
  • the base station needs to pre-configure the channel and parameters of the user equipment for direct communication, for example, configuring the CA for the user equipment 10, and configuring the user equipment 10 to perform spectrum sensing or spectrum detection on the unlicensed spectrum where the SCell is located. , and many more.
  • FIG. 2 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • the embodiment of the invention provides a base station, which supports the user equipment under its jurisdiction to perform direct communication on the unlicensed spectrum, and can be applied to public security and commercial applications, and the working mode includes peer-to-peer communication and local broadcasting. Relay communication with user equipment, etc.
  • the base station 20 includes: a second receiver 21 and a second processor 22.
  • the second receiver 21 is configured to receive a measurement report sent by the user equipment, where the measurement report is generated by the user equipment according to the radio parameter of the direct communication on the unlicensed spectrum measured by the user equipment; the second processor 22 and the second receiving The device 21 is connected to determine, according to the measurement report, that the user equipment is suitable for direct communication and allocate the wireless resource for data communication to the user equipment.
  • the base station determines, according to the wireless parameter of the direct communication on the unlicensed spectrum reported by the user equipment, whether the user equipment is suitable for direct communication, and if it is suitable for direct communication, the user equipment is allocated for data communication.
  • the RRC system is applied to the unlicensed spectrum to effectively utilize unlicensed spectrum resources and improve the available spectrum bandwidth of users in the LTE system.
  • the base station 20 may further include a second transmitter 23, and the second transmitter 23 is connected to the second processor 22.
  • the second processor 22 may Specifically, it is used to: determine that the unlicensed spectrum is available according to the measurement report, and trigger the second transmitter 23 to send the indication information to the user equipment, where the indication information is used to indicate that the unlicensed spectrum is available.
  • the base station 20 controls the user equipment under its control to transmit and/or receive control signals according to the available state of the unlicensed spectrum, thereby saving radio resources on the configured spectrum and reducing battery consumption and power consumption of the user equipment.
  • the first receiver 11 may be specifically configured to: receive, by using the licensed spectrum, a control signal sent by the second user equipment, where the control signal may include a peer signal and a discovery signal.
  • the user equipment 10 performs D2D direct communication on the unlicensed spectrum, and the user equipment 10 transmits the peer signal and the discovery signal of the D2D direct communication on the PCell to improve the reliability.
  • FIG. 4 is an overall structural diagram of D2D direct-connect communication according to the present invention, and a peer-to-peer signal and a discovery signal between the first user equipment 30 and the second user equipment 40 are transmitted on an authorized spectrum of the LTE system, and are indicated by a chain line;
  • the communication is performed on the unlicensed spectrum and is indicated by the solid line;
  • the dotted line indicates the signal between the base station 20 and the first user equipment 30 (or the second user equipment 40), for example, the downlink synchronization signal sent by the base station 20 (Synchronization Signal, Jane: SS), Reference Signal (referred to as RS), system information, physical downlink control channel (PDCCH) or enhanced for allocating radio resources for D2D communication
  • FIG. 5 is an exemplary diagram of a peer-to-peer signal on a licensed spectrum of an LTE system.
  • the horizontal axis represents the time axis and the vertical axis represents the frequency spectrum.
  • the dotted line indicates that the unlicensed spectrum is unavailable, and the solid line indicates that the unlicensed spectrum is available.
  • the second user equipment 40 periodically transmits the same signal, that is, tgue, t 12 , t 13 , t 14 At times t 15 and the like, the first user equipment 30 receives the homogenous signals only when the unlicensed spectrum is available, such as times t 13 and t 15 .
  • Figure 6 is a diagram showing an example of signals found on the licensed spectrum of an LTE system. The specific meanings of the parts in Fig. 6 are the same as those in Fig. 5 and will not be described here. It should be noted that the transmission period of the peer signal and the discovery signal may be the same or different, and are configured by the base station side according to actual needs.
  • the second processor 22 built in the base station 20 is further configured to: receive the user equipment 10 (the first user equipment 30 and/or the second user equipment 40) at the second receiver 21.
  • the carrier aggregation is configured for the user equipment 10, where the primary serving cell uses the licensed spectrum of the LTE system, and the secondary serving cell uses the unlicensed spectrum.
  • the base station 20, specifically, the second receiver 21 determines, according to the measurement report fed back by the user equipment 10, that the user equipment 10 is suitable for D2D direct communication, and configures radio resources for data communication between the user equipments 10.
  • the base station 20 can separately configure the user equipment 10 to perform spectrum sensing or spectrum detection on the unlicensed spectrum where the SCdl is located, and the user equipment 10 uses the physical layer energy detection of the prior art (Energy).
  • Sensing or Energy Detection
  • Matched Filter Detection or Covariance Matrix Detection, or Cyclostationary Feature Detection, or eigenvalue-based spectrum sensing (Eigenvalue Based Spectrum) Sensing), or Received Signal Strength Indication (RSI), or Interference Measurement, or Signal To Noise Rate (SNR) measurement, or Signal to Noise Ratio (Signal) To Interference Noise Rate (SINR), or Rise Over Thermal (ROT) measurement or other technology to detect the available status of the unlicensed spectrum, and report the measurement result to the base station 20 for base station 20 to determine.
  • RSI Received Signal Strength Indication
  • Interference Measurement or Signal To Noise Rate (SNR) measurement, or Signal to Noise Ratio (Signal) To Interference Noise Rate (SINR), or Rise Over Thermal (ROT) measurement or other technology to detect the available status of the unlicensed spectrum, and report the measurement result to the base station 20 for base station 20 to determine.
  • SNR Signal To Noise Rate
  • the base station 20 may further configure information such as a direct communication identifier, a peer signal, a discovery signal, and the like of the user equipment 10, for the first user equipment 30 and/or
  • the second user equipment 40 generates a peer signal and a discovery signal based on the above information.
  • the peer signal and the discovery signal are located in different frequency domain resources in the licensed spectrum of the LTE system, that is, the transmission of the above-mentioned peer signal and the discovery signal uses the radio resource on the licensed spectrum, where the first user equipment 30 and the second user
  • the device 40 transmits a peer or discovery signal through different time-frequency domain resources, such as sub-frames and frequencies, to avoid collisions.
  • the second processor 22 can be configured to: receive the user equipment at the second receiver 21
  • the user equipment 10 Before transmitting the measurement report, the user equipment 10 is configured to periodically transmit and/or receive a control signal, where the control signal includes a peer signal and a discovery signal; or, before the second receiver 21 receives the measurement report sent by the user equipment 10,
  • the configuration mask is configured to enable the user equipment 10 to transmit and/or receive control signals upon receiving unlicensed spectrum available information indicated by the base station 20 or when the user equipment 10 determines that the unlicensed spectrum is available.
  • the base station 20 may configure the first user equipment 30 and the second user equipment 40 to send respective peer signals and discovery signals, and detect and receive the foregoing signals of the opposite end; or the base station 20 only configures the first user equipment 30 or the first The two user equipments 40 transmit the peer signal and the discovery signal, and configure the second user equipment 40 or the first user equipment 30 to detect and receive the above signals of the opposite end.
  • the base station 20 may configure the first user equipment 30 and/or the second user equipment 40 to periodically transmit/receive the peer signal and the discovery signal; or may also configure a mask to enable the first user equipment 30 and/or the second user.
  • the device 40 begins to periodically transmit and/or receive the above signals only upon receiving the unlicensed spectrum available information indicated by the base station 20 or the user equipment 10 itself determines that the unlicensed spectrum is available. As shown in FIG. 5 and FIG. 6, the user equipment 10 transmits and/or receives the above signals according to the available state of the unlicensed spectrum, thereby saving radio resources on the licensed spectrum and reducing battery consumption and power consumption of the user equipment 10.
  • the user equipment 10 periodically transmits and/or receives the above signals on the licensed spectrum based on the configuration information of the peer signal and the discovery signal. Specifically, the user equipment 10 periodically transmits and/or receives the foregoing signal on the licensed spectrum of the LTE system after the base station 20 is configured successfully. Alternatively, the base station 20 determines the unlicensed spectrum according to the unlicensed spectrum measurement information reported by the user equipment 10.
  • the user equipment 10 is sent on the licensed spectrum of the LTE system by using a physical downlink control channel (Physical Downlink Control Channel, PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH) on the PCdl.
  • PDCCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • the user equipment 10 periodically transmits and/or receives the above signal on the licensed spectrum of the LTE system after receiving the indication from the base station 20.
  • the user equipment 10 determines that the unlicensed spectrum is available according to the unlicensed spectrum measurement result, and starts to periodically send and/or receive the foregoing signal in the licensed spectrum of the LTE system.
  • the base station 20 indicates the unlicensed spectrum to the user equipment 10. The direct communication is in an available state, or simultaneously indicates that the user equipment 10 transmits/receives the above signal in the licensed spectrum of the LTE system.
  • the reference signal received power is measured according to the received peer signal and/or the discovery signal of the opposite user equipment (Reference Signal Received Power, RSRP for short) Or the information of the Channel Quality Indication (CQI) or the path loss; the user equipment 10 reports the measurement result to the base station 20, and the base station 20 determines whether the user equipment 10 is suitable for maintaining the straightness based on the above information. Even communication.
  • RSRP Reference Signal Received Power
  • CQI Channel Quality Indication
  • the first transmitter 13 built in the user equipment 10 is specifically configured to: periodically send a measurement report. Or the base station 20; or, when it is determined that the measurement result meets the preset condition, the measurement report is sent to the base station 20, where the preset condition includes the measurement result being greater than or less than the preset threshold.
  • the base station 20 when the unlicensed spectrum is available, the base station 20 sends a cell peer signal and a reference signal, etc., on the unlicensed spectrum, to indicate that the user equipment 10 measures radio parameter information such as RSRP or CQI on the unlicensed spectrum, and periodically. Or reporting to the base station according to whether the measurement result is greater than or less than a preset threshold, and the base station allocates the radio resource for the D2D data communication to the user equipment 10 according to the wireless parameter of the unlicensed spectrum.
  • radio parameter information such as RSRP or CQI
  • the base station 20 can also configure the user equipment 10 to transmit the peer signal and/or the reference signal and/or the discovery signal on the unlicensed spectrum, and the user equipment 10 can measure the wireless parameter of the direct communication on the unlicensed spectrum, and the user can be configured.
  • the device 10 performs periodic reporting, or reports to the base station 20 according to whether the measurement result is greater than or less than the preset threshold.
  • the base station 20 allocates the radio resource for the D2D data communication to the user equipment 10 according to the wireless parameter of the unlicensed spectrum.
  • the method for transmitting and receiving the homology signal and the discovery signal provided by this embodiment can improve the reliability of the homology signal and the discovery signal, and configure the mask configuration so that the user equipment only on the licensed spectrum when the unlicensed spectrum is available. Sending the above signals saves radio resources on the licensed spectrum and saves battery and power consumption of the user equipment, improving communication reliability and utilization of spectrum resources.
  • embodiments of the present invention do not limit the number of component carriers performing CA, nor restrict PDCCH and/or EPDCCH to be transmitted only on the PCell, or may be performed on other SCdls on the licensed spectrum. send.
  • the first processor 12 is further configured to: interact with the second user equipment 40 according to the first user equipment 30.
  • the occupation information of the unlicensed spectrum determines the receiving time of the control signal, and triggers the first receiver 11 to receive the control signal sent by the second user equipment 40 through the licensed spectrum at the receiving time; or, according to the first receiver 11 from the first user equipment
  • the base station obtains the notification that the unlicensed spectrum is available, determines the receiving time of the control signal, and triggers the first receiver 11 to receive the control signal sent by the second user equipment 40 through the authorized spectrum at the receiving time, where the notification is the first user equipment.
  • the result of the unlicensed spectrum occupancy information interaction between the base station and the second user equipment 40 is used to indicate that the first user equipment 30 and the second user equipment 40 perform direct communication.
  • the second processor 22 is further configured to: perform, after the second receiver 21 receives the measurement report sent by the user equipment 10, perform an unlicensed spectrum with another base station where another user equipment that performs direct communication is located. Occupying information Interacting, and implementing inter-base station peering according to the interaction result, and notifying the user equipment 10 to perform direct connection communication.
  • the first user equipment 30 is located in the cell provided by the first base station 50
  • the second user equipment 40 is located in the cell provided by the second base station 60, where the first base station 50 and the second base station 60 are adjacent in position.
  • the first user equipment 30 and the second user equipment 40 are located in two cells for performing inter-base station carrier aggregation, for example, the first user equipment 30 and the second user equipment 40 are configured with CA.
  • the CA is aggregated by a cell provided by a primary eNB (MeNB) 70 and a secondary eNB (SeNB) 80, where one of the cells provided by the MeNB 70 operates in an unlicensed spectrum, where the SeNB 80 provides One of the cells works in an unlicensed spectrum.
  • MeNB primary eNB
  • SeNB 80 secondary eNB
  • Both the cell on the licensed spectrum and the cell on the unlicensed spectrum of the LTE system provided by the two base stations need to be the same, for example, the system frame number (SFN) and the subframe level are the same. It can be realized by the inter-base station peer of the prior art.
  • the first processor 12 determines the receiving time of the control signal according to the occupation information of the unlicensed spectrum
  • the first user equipment 30 and the second user equipment 40 directly interact with each other, and it is determined that the two user equipments can be performed. Direct communication, that is, after the two user devices are mutually identical and discovered.
  • the user equipment can directly communicate with each other through the base station, for example, the occupancy information of the unlicensed spectrum is reported to the base station, and then the base station determines the reception time.
  • the process of configuring the CA and the D2D for the user equipment by the base station is the same as the foregoing embodiment, but for the radio resource allocation of the homology signal and the discovery signal on the licensed spectrum, two base stations need to pass between the base stations.
  • the interface (for example, the X2 interface) negotiates that the radio resources allocated by the two base stations for their respective user equipments need to be consistent, so that the user equipment can transmit and receive control signals on the same radio resource.
  • the two base stations need to communicate through the X2 interface, or through the direct connection between the user equipments, or through both the base stations and the user equipment.
  • the common channel that can be accessed is notified, and only when the time on the unlicensed spectrum of the two base stations is occupied by the LTE system overlaps, data communication between the user equipments can be performed, and the peer signals between the user equipments and The discovery signal can only be sent through the licensed spectrum.
  • the peer signal and the discovery signal configuration of the direct communication between the user equipments, and the sending and receiving methods the mutual information of the unlicensed spectrum is determined by the user equipment between the base stations or the D2D direct communication communication, and the same signal is determined.
  • Discover the timing of the signal transmission and on the licensed spectrum of the LTE system Sending the above signal can improve the reliability of the above signal; and only when the unlicensed spectrum is available, the processing method of the above signal is sent, thereby saving the radio resources of the licensed spectrum and the battery and power consumption of the user equipment, thereby improving the reliability of the communication. And utilization of spectrum resources.
  • the first receiver 11 may be specifically configured to: receive, by using an unlicensed spectrum, a control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the horizontal axis represents the time axis and the vertical axis represents the frequency spectrum.
  • the dotted line indicates that the unlicensed spectrum is unavailable
  • the solid line indicates that the unlicensed spectrum is available
  • the second user equipment 40 periodically transmits the same signal, that is, the time of 3 ⁇ 4 1 1 ⁇ 2, t 33 , t 3 4 and t 35
  • the first user equipment 30 receives the peer signal only when the unlicensed spectrum is available, such as time t 33 and time t 35 .
  • the base station configures the user equipment to transmit and receive the radio resource of the peer signal and the discovery signal on the unlicensed spectrum, and sends the foregoing control signal when the radio parameter is unsuitable on the unlicensed spectrum, thereby saving the radio resource of the licensed spectrum. And improve the reliability of direct communication.
  • the implementation is different from the foregoing implementation manner in that, in this implementation manner, the peer-to-peer signal and the discovery signal configured by the base station 20 for the user equipment 10 are transmitted by using radio resources on the unlicensed spectrum.
  • the first user equipment 30 and the second user equipment 40 use different time-frequency domain resources to transmit the peer signal and/or the discovery signal, for example, to distinguish between subframes and frequencies to avoid collision.
  • the base station 20 configures the user equipment 10 to periodically transmit and/or receive the control signals only when the unlicensed spectrum available information indicated by the base station 20 is received or when the user equipment 10 itself determines that the unlicensed spectrum is available.
  • the first processor 12 selects its corresponding available frequency range for transmission of the control signal according to the range of the unlicensed spectrum.
  • the base station 20 may configure the resources of the foregoing control signal for the user equipment 10 on multiple frequencies, so that the user equipment 10 selects corresponding according to the available conditions of the specific frequency range on the unlicensed spectrum.
  • the available frequency range transmits and/or receives the above control signals; the base station 20 can also configure the user equipment 10 to transmit and/or receive the signals at lower power and/or different periods when the unlicensed spectrum is unavailable.
  • the user equipment 10 periodically transmits/receives the above control signal on the unlicensed spectrum based on the configuration information of the peer signal and the discovery signal.
  • the base station 20 determines the non-authentication based on the unlicensed spectrum measurement information reported by the user equipment 10.
  • the licensed spectrum is available, and the PDCCH or the EPDCCH on the PCell indicates that the user equipment 10 starts transmitting and/or receiving the foregoing signal, and the user equipment 10 periodically transmits and/or receives the signal on the unlicensed spectrum after receiving the indication from the base station 20; or
  • the user equipment 10 determines that the unlicensed spectrum is available according to its own unlicensed spectrum measurement result, and periodically transmits and/or receives the above signal on the unlicensed spectrum.
  • the user equipment 10 indicates to the base station 20 that the unlicensed spectrum is available for direct communication between the other user equipment, and/or the information that the user equipment 10 has transmitted and/or received the control signal. Indicated to the base station 20.
  • the user equipment 10 can select and transmit the above control signal according to the configuration of the base station 20 and the available frequency range of the specific frequency range on the unlicensed spectrum.
  • the user equipment 10 may also transmit and/or receive the above control signals at a lower power and/or different periods when the unlicensed spectrum is unavailable according to the configuration of the base station 20.
  • the user equipment 10 After transmitting and/or receiving the foregoing control signal, the user equipment 10 measures information such as RSRP, or CQI, or path loss according to the received peer signal and/or discovery signal of the opposite user equipment; and reports the measurement to the base station 20. As a result, the base station 20 determines whether the user equipment 10 is suitable for maintaining D2D communication based on the above-described control signal, and allocates radio resources for data communication to the user equipment 10 based on the wireless parameters of the unlicensed spectrum.
  • information such as RSRP, or CQI, or path loss according to the received peer signal and/or discovery signal of the opposite user equipment.
  • the base station 20 determines whether the user equipment 10 is suitable for maintaining D2D communication based on the above-described control signal, and allocates radio resources for data communication to the user equipment 10 based on the wireless parameters of the unlicensed spectrum.
  • the base station 20 transmits a cell-synchronous signal, a reference signal, and the like on the unlicensed spectrum, and is used by the user equipment 10 to measure information of radio parameters such as RSRP or CQI on the unlicensed spectrum, and periodically or according to the measurement. Whether the result is greater than or less than the preset threshold is reported to the base station 20, so that the base station 20 allocates the radio resource for data communication to the user equipment 10 according to the wireless parameter of the unlicensed spectrum.
  • the reliability of the peer signal and the discovery signal can be improved, and the radio resources and the battery consumption and power of the user equipment on the licensed spectrum can be saved. loss.
  • the first processor 12 may be further configured to: according to the first user equipment 30 and the second user equipment The occupancy information of the 40 unlicensed spectrums is determined, and the receiving time of the control signal is determined, and the first receiver 11 is configured to receive the control signal sent by the second user equipment 40 through the unlicensed spectrum at the receiving time; or, according to the first receiver 11
  • the base station where the first user equipment 30 is located acquires an unlicensed frequency
  • the notification of the available spectrum determines the receiving time of the control signal, and triggers the first receiver 11 to receive the control signal sent by the second user equipment 40 through the unlicensed spectrum at the receiving time, wherein the notification is the first user equipment 30 and the second user.
  • the first user equipment 30 and the second user equipment 40 are instructed to perform direct communication.
  • the base stations need to communicate through the X2 interface, or notify through the direct connection between the user equipments, or through the base stations and users.
  • the device can access the common channel for notification. Only when the time on the unlicensed spectrum of the two base stations is overlapped by the LTE system, the data communication between the user equipments can be performed, and the peers between the user equipments Signals and discovery signals can be sent over unlicensed spectrum.
  • the information about the transmission of the unlicensed spectrum and the discovery signal are determined by the user equipment that performs the direct communication between the base stations or the user equipment, and the signal is sent when the unlicensed spectrum radio parameters are appropriate, for example, by mask configuration.
  • the user equipment sends the control signal on the licensed spectrum or the unlicensed spectrum only when the unlicensed spectrum is available, which can improve the reliability of the foregoing signal, save the radio resources of the licensed spectrum, and the battery consumption and power consumption of the user equipment, thereby improving Communication reliability; thereby saving spectral resources as well as the battery and power consumption of the UE.
  • the embodiments of the present invention generally improve the success rate of communication and the utilization of spectrum resources, so that the D2D direct communication and the different systems in the LTE system coexist in the unlicensed spectrum more reasonably and efficiently under the premise of complying with the spectrum regulations. .
  • FIG. 11 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention.
  • the user equipment in this embodiment is adapted to perform direct connection communication on the unlicensed spectrum, wherein the user equipment is used as the first user equipment, and the first user equipment is directly connected to the second user equipment, and both are implemented by the present invention.
  • “first" and “second” here only distinguish two different user equipments.
  • the user equipment 110 includes: a first receiving module 111, a first processing module 112, and a first sending module 113.
  • the first receiving module 111 is configured to receive the control signal sent by the second user equipment by configuring the spectrum.
  • the first processing module 112 is connected to the first receiving module 111, and configured to measure the direct communication on the unlicensed spectrum according to the control signal.
  • the wireless parameter is used to generate a measurement report
  • the first sending module 113 is connected to the first processing module 112, and configured to send a measurement report to the base station, so that the base station allocates the first user equipment and the second user equipment according to the measurement report. Radio resources for data communication.
  • the first processing module 112 determines that the unlicensed spectrum is available, the first receiving module 111 is triggered to receive the control signal sent by the second user equipment by configuring the spectrum.
  • the first processing module 112 determines that the unlicensed spectrum is available: the first processing module 112 detects that the indication information sent by the base station is received, and the indication information is used to indicate that the unlicensed spectrum is available; or the first processing module 112 is configured according to It is determined by itself that the wireless parameters of the direct communication on the unlicensed spectrum are measured, and the unlicensed spectrum is determined to be available.
  • the first receiving module 111 may be specifically configured to: receive, by using the licensed spectrum, a control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the first processing module 112 may be further configured to: interact with the unlicensed spectrum according to the first user equipment and the second user equipment.
  • the occupant information is used to determine the receiving time of the control signal, and the first receiving module 111 is configured to receive the control signal sent by the second user equipment by using the licensed spectrum at the receiving time; or, according to the first receiving module 111, obtaining the non-authorization from the base station where the first user equipment is located.
  • the notification that the spectrum is available determines the receiving time of the control signal, and triggers the first receiving module 111 to receive the control signal sent by the second user equipment by using the licensed spectrum, where the notification is that the first user equipment and the second user equipment are respectively located
  • the result of the unlicensed spectrum occupation information exchange performed by the base station is used to indicate that the first user equipment and the second user equipment perform direct connection communication.
  • the first receiving module 111 may be specifically configured to: receive, by using an unlicensed spectrum, a control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the first processing module 112 may select a corresponding available frequency range for transmission of the control signal according to the range of the unlicensed spectrum.
  • the first processor module 112 is configured to: determine, according to the occupation information of the unlicensed spectrum between the first user equipment and the second user equipment, the receiving time of the control signal, and trigger the first receiving module 111 to pass the unauthorized at the receiving time.
  • the spectrum receives the control signal sent by the second user equipment; or, according to the notification that the first receiving module 111 obtains the unlicensed spectrum available from the base station where the first user equipment is located, determines the receiving time of the control signal, and triggers the first receiving module 111 at the receiving time.
  • the first sending module 113 may be specifically configured to: periodically send a measurement report to the base station; or, when determining that the measurement result meets the preset condition, send the measurement report to the base station, where the preset condition may include the measurement result Greater than or less than the preset threshold.
  • the peer signal and the discovery signal are located in different frequency domain resources in the configured spectrum.
  • FIG. 12 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention.
  • the base station of this embodiment supports the user equipment under its jurisdiction to perform direct connection communication on the unlicensed spectrum.
  • the base station 120 includes: a second receiving module 121 and a second processing module 122.
  • the second receiving module 121 is configured to receive a measurement report sent by the user equipment, where the measurement report is generated by the user equipment according to the wireless parameter of the direct communication on the unlicensed spectrum measured by the user equipment; the second processing module 122 and the second receiving The module 121 is connected, and according to the measurement report, it is determined that the user equipment is suitable for direct communication, and the user equipment is allocated a wireless resource for data communication.
  • FIG. 13 is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
  • the base station of this embodiment may further include: a second sending module 123 connected to the second processing module 122, in the implementation manner, the second processing module The information may be used to: determine that the unlicensed spectrum is available according to the measurement report, and trigger the second sending module 123 to send the indication information to the user equipment, where the indication information is used to indicate that the unlicensed spectrum is available.
  • the second processing module 122 is further configured to: in the second receiving module 121 Before receiving the measurement report sent by the user equipment, the carrier aggregation is configured for the user equipment, where the primary serving cell uses the licensed spectrum and the secondary serving cell uses the unlicensed spectrum.
  • the second processing module 122 is further configured to: before the second receiving module 121 receives the measurement report sent by the user equipment, configure the user equipment to periodically send and/or receive a control signal, where the control signal includes the same The signal and the discovery signal; or, before the second receiving module 121 receives the measurement report sent by the user equipment, configure a mask, so that the user equipment receives the unlicensed spectrum available information indicated by the base station or the user equipment determines that the unlicensed spectrum is available, Send and/or receive control signals.
  • the second processing module 122 may be further configured to: before the second receiving module 121 receives the measurement report sent by the user equipment, Another base station in which another user equipment is in communication performs the interaction of the unlicensed spectrum occupation information, and implements the inter-base station peering according to the interaction result, and notifies the user equipment to perform direct connection communication.
  • FIG. 14 is a flowchart of Embodiment 1 of a method for establishing direct connection communication according to the present invention.
  • the embodiment of the invention provides a method for establishing direct communication, which is suitable for direct communication between the user equipments on an unlicensed spectrum. As shown in Figure 14, the method includes:
  • the first user equipment receives the control signal sent by the second user equipment by configuring the spectrum.
  • the first user equipment measures, according to the control signal, a wireless parameter of the direct communication on the unlicensed spectrum, and generates a measurement report by using the measurement result;
  • the first user equipment sends a measurement report to the base station, so that the base station allocates radio resources for data communication for the first user equipment and the second user equipment according to the measurement report.
  • the direct communication establishment method of the embodiment may be performed by the user equipment (ie, the first user equipment and the second user equipment) in the embodiment shown in FIG. 1 or FIG. 11 , and the implementation principle and the technical effect are similar. I won't go into details here.
  • the S141 may include: if the first user equipment determines that the unlicensed spectrum is available, the first user equipment receives the control signal sent by the second user equipment by configuring the spectrum.
  • the determining, by the first user equipment, that the unlicensed spectrum is available may include: the first user equipment receiving the indication information sent by the base station, where the indication information is used to indicate that the unlicensed spectrum is available; or the first user equipment is according to the For the measurement of the wireless parameters of the direct communication on the unlicensed spectrum, it is determined that the unlicensed spectrum is available.
  • the S 141 may include: the first user equipment receives, by using the licensed spectrum, a control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the method may further include: before the S141, the first user equipment interacts with the second user equipment according to the non-interaction Authorizing the occupied information of the spectrum, determining the receiving time of the control signal, receiving the control signal sent by the second user equipment through the authorized spectrum at the receiving time; or, the first user equipment obtaining the notification that the unlicensed spectrum is available from the base station where the first user equipment is located, determining the control The receiving time of the signal, the control signal sent by the second user equipment is received by the licensed spectrum at the receiving time, where the notification is the result of performing the unlicensed spectrum occupation information interaction between the base station where the first user equipment and the second user equipment are located, Directing the first user equipment and the second user equipment to perform direct communication.
  • the S141 may include: the first user equipment receives, by using the unlicensed spectrum, a control signal sent by the second user equipment, where the control signal includes a peer signal and a discovery signal.
  • the first user equipment selects its corresponding available frequency range to transmit the control signal according to the range of the unlicensed spectrum.
  • the method may further include: the first user equipment interacts with the second user equipment according to itself The occupation information of the unlicensed spectrum is determined, the receiving time of the control signal is determined, and the control signal sent by the second user equipment is received by the unlicensed spectrum at the receiving time; or the first user equipment obtains the unlicensed spectrum from the base station where the first user equipment is available.
  • the notification, the receiving time of the control signal is determined, and the control signal sent by the second user equipment is received by the unlicensed spectrum at the receiving time, where the notification is for the unlicensed spectrum occupation information of the base station where the first user equipment and the second user equipment are located
  • the result of the interaction is used to indicate that the first user equipment and the second user equipment perform direct communication.
  • the S 143 may include: the first user equipment periodically sends a measurement report to the base station; or, when the first user equipment determines that the measurement result meets the preset condition, the measurement report is sent to the base station, where the preset Conditions include that the measurement is greater or less than the preset threshold.
  • the peer signal and the discovery signal are located in different frequency domain resources in the configured spectrum.
  • FIG. 15 is a flowchart of Embodiment 2 of a method for establishing direct connection communication according to the present invention.
  • the embodiment of the invention provides a method for establishing direct communication, which is suitable for direct communication between the user equipments on an unlicensed spectrum. As shown in Figure 15, the method includes:
  • the base station receives a measurement report sent by the user equipment, where the measurement report is a user equipment according to the It is generated by the wireless parameters of the direct communication of the unlicensed spectrum measured by itself.
  • the base station determines, according to the measurement report, that the user equipment is suitable for direct communication, and allocates a radio resource for data communication to the user equipment.
  • the method for establishing a direct connection communication in this embodiment may be performed by a base station in the embodiment shown in FIG. 2 or FIG. 12, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 16 is a flowchart of Embodiment 3 of a method for establishing direct connection communication according to the present invention.
  • the method for establishing a direct communication according to the present invention is applicable to the direct communication of the user equipment on the unlicensed spectrum. On the basis of the embodiment shown in FIG. 15, the method may also be used. Includes:
  • the base station determines, according to the measurement report, that the unlicensed spectrum is available, and the base station sends the indication information to the user equipment, where the indication information is used to indicate that the unlicensed spectrum is available.
  • the method for establishing a direct connection communication in this embodiment may be performed by a base station in the embodiment shown in FIG. 3 or FIG. 13 .
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the method may further include: the base station configuring carrier aggregation for the user equipment, where the primary serving cell adopts an authorized spectrum, and the secondary serving cell adopts an unlicensed spectrum.
  • the method may further include: the base station configuring the user equipment to periodically send and/or receive a control signal, where the control signal includes a peer signal and a discovery signal; or, the base station configuration mask, so that the user equipment receives The control signal is transmitted and/or received when the unlicensed spectrum available information indicated by the base station or the user equipment determines that the unlicensed spectrum is available.
  • the method may further include: before the S151, the base station performs non-operation with another base station where another user equipment that performs direct communication is located. Authorizes the spectrum to occupy information interaction, and implements inter-base station peers based on the interaction result, and notifies the user equipment to perform direct connection communication.
  • the LTE system is applied to the unlicensed spectrum to effectively utilize the unlicensed spectrum resources to improve the available spectrum bandwidth of the users in the LTE system.
  • the base station controls the user equipments under its control according to the non-authorization.
  • the available state of the spectrum transmits and/or receives control signals, thereby saving radio resources on the configured spectrum and also reducing battery consumption and power consumption of the user equipment.

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  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente invention concernent un équipement utilisateur pour une communication par connexion directe, une station de base, et un procédé d'établissement d'une communication par connexion directe. L'équipement utilisateur est un premier équipement utilisateur. Il est utilisé pour une communication par connexion directe sur un spectre sans licence. L'équipement d'utilisateur comprend : un récepteur, pour recevoir, via un spectre de configuration, un signal de commande envoyé par un second équipement d'utilisateur ; un processeur, pour mesurer des paramètres radio de communication par connexion directe sur le spectre sans licence d'après le signal de commande, et générer un rapport de mesurage d'après le résultat de mesurage ; et un émetteur, pour envoyer le rapport de mesurage à une station de base, de sorte que la station de base attribue des ressources radio pour une communication de données au premier équipement d'utilisateur et au second équipement d'utilisateur d'après le rapport de mesurage. Dans les modes de réalisation de la présente invention, un système LTE est appliqué sur le spectre sans licence pour utiliser efficacement des ressources de spectre sans licence et améliorer la largeur de bande spectrale utilisable d'un utilisateur dans le système LTE.
PCT/CN2014/071756 2014-01-29 2014-01-29 Équipement d'utilisateur pour une communication par connexion directe, station de base, et procédé d'établissement d'une communication par connexion directe WO2015113247A1 (fr)

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PCT/CN2014/071756 WO2015113247A1 (fr) 2014-01-29 2014-01-29 Équipement d'utilisateur pour une communication par connexion directe, station de base, et procédé d'établissement d'une communication par connexion directe

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WO2020164590A1 (fr) * 2019-02-15 2020-08-20 维沃移动通信有限公司 Procédé de détection de ressource de transmission, procédé de détermination de ressource de transmission et dispositif de communication
WO2023111274A1 (fr) * 2021-12-17 2023-06-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Gestion de communication de liaison latérale à l'aide du spectre sans licence

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