WO2015109895A1 - 一种实现空口同步的方法、设备、系统和计算机存储介质 - Google Patents

一种实现空口同步的方法、设备、系统和计算机存储介质 Download PDF

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Publication number
WO2015109895A1
WO2015109895A1 PCT/CN2014/093484 CN2014093484W WO2015109895A1 WO 2015109895 A1 WO2015109895 A1 WO 2015109895A1 CN 2014093484 W CN2014093484 W CN 2014093484W WO 2015109895 A1 WO2015109895 A1 WO 2015109895A1
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Prior art keywords
cell
synchronization source
state
candidate synchronization
management entity
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PCT/CN2014/093484
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English (en)
French (fr)
Inventor
韩晓钢
苟伟
赵亚军
彭佛才
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中兴通讯股份有限公司
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Publication of WO2015109895A1 publication Critical patent/WO2015109895A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to synchronization technologies in the field of wireless communication, and more particularly to a method, device, system and computer storage medium for implementing air interface synchronization.
  • Synchronization technology is closely related to mobile communication systems, and good synchronization between base stations can achieve better system performance, such as: interference coordination/interference avoidance scenarios, multimedia broadcast multicast services, and carrier aggregation scenarios, etc. It is a necessary condition to ensure the normal operation of these businesses.
  • network listening technology is widely used for synchronization between base stations.
  • a base station providing synchronization information (signal, channel) may be referred to as a source base station or a source cell; and a base station receiving synchronization information may be referred to as a target base station or a target cell.
  • a small cell on/off mechanism is introduced, that is, the small cell can enter the off state at a certain moment based on certain criteria.
  • a small cell when a small cell enters a closed state, it affects the air interface synchronization of other small cells that use the small cell as a source cell, thereby affecting the performance of the entire system.
  • the embodiments of the present invention are directed to a method, a device, a system, and a computer storage medium for implementing air interface synchronization, which can implement air interface synchronization of other small cells or even overall system performance when a small cell enters a closed state. Make an impact.
  • an embodiment of the present invention provides a method for implementing air interface synchronization, where the method includes:
  • the management entity controls the on/off state of the cell through a signaling interaction process with a cell within the management area.
  • the signaling used in the signaling interaction process includes on/off state information of the cell, whether a target cell of the cell finds a new synchronization source, or At least one of time information of the cell entering the closed state, candidate candidate source cell set of the target cell of the cell, and lower cell information of the target cell of the cell.
  • the manner in which the management entity controls an on/off state of the cell includes:
  • the management entity notifies the each cell to perform a closed state
  • the cell selects an appropriate closed state and performs the closed state
  • the closed state of the cell includes any one of the following states:
  • the cell only sends a discovery signal (DS);
  • the cell sends a DS and is used for an air interface synchronization reference signal
  • the cell only sends an air interface synchronization reference signal
  • State 5 The cell sends an air interface synchronization reference signal only at the listening subframe position of its own target cell, and is turned off at other times.
  • the signaling interaction manner includes: a periodic interaction mode, or an event-triggered interaction mode, or based on the periodic interaction mode and event triggering.
  • the interaction mode is a combination of two ways of interaction.
  • the management entity controls an on/off state of the cell by using a signaling interaction process with a cell in the management area, including:
  • the management entity notifying the target cell of a closed state of the cell
  • the management entity is a target cell that needs to determine a new source cell, and one of the candidate synchronization source cell sets except the cell is configured as a new source cell of the target cell; or
  • the management entity is a target cell that needs to determine a new source cell, and a cell other than the cell in the candidate synchronization source cell set is selected according to a preset rule to be a new source cell of the target cell.
  • the management entity controls an on/off state of the cell by using a signaling interaction process with a cell in the management area, including:
  • the management entity controls an on/off state of the cell by using a signaling interaction process with a cell in the management area, including:
  • the management entity rejects the cell shutdown, or configures the cell to enter the state 2 to the state 5 Any one of the closed states.
  • the management entity controls an on/off state of the cell by using a signaling interaction process with a cell in the management area, including:
  • the management entity notifies the target cell of the closing time of the cell, so that the target cell of the new source cell needs to be determined to find a new source cell before the closing time;
  • the management entity When it is determined that the target cell of the new source cell finds a new source cell before the closing time, the management entity allows the cell to be closed; otherwise, the management entity rejects the cell to be closed, or configures the cell Entering any of the state 2 to the state 5 is off.
  • the management entity controls an on/off state of the cell by using a signaling interaction process with a cell in the management area, including:
  • the management entity acquires an on/off state of each cell in the management area
  • the management entity notifies the candidate synchronization source cell set that the target cell with the cell is closed, so that the target cell selects a non-closed cell from its own candidate synchronization source cell set, and uses the non-closed cell as the target.
  • the new source cell of the cell is notifies.
  • the management entity controls the opening of the cell by a signaling interaction process with a cell in the management area.
  • the method further includes:
  • the management entity controls all cells in each candidate synchronization source cell set to be closed at the same time.
  • the management entity obtains the candidate synchronization source cell set of each cell in the management area, including:
  • the management entity receives a candidate synchronization source cell set of each cell reported by each cell in the management area;
  • the off state includes: the management entity configuring the cell to ignore a switch state of a target cell of the cell, and causing the cell to be at a predetermined shutdown time Entering a closed state, and waking up at a subframe position monitored by the target cell, so that the cell sends an air interface synchronization reference signal.
  • the method further includes:
  • the management entity instructs the cell to periodically detect a new candidate synchronization source cell
  • the new candidate synchronization source cell level is higher than the current source cell level of the cell, the new candidate synchronization source cell is configured as the cell new source cell.
  • an embodiment of the present invention provides a method for implementing air interface synchronization, where the method includes:
  • the management entity receives the candidate synchronization source cell information reported by the target cell and the subframe position information when the candidate synchronization source is intercepted;
  • the sub-frame position at the time of the source performs silence.
  • the candidate synchronization source cell includes: a cell belonging to the same operator as the target cell and/or a cell belonging to a different operator from the target cell.
  • the neighboring cell of the target cell includes a cell that belongs to the same operator as the target cell and/or a cell that belongs to a different operator from the target cell.
  • the subframe position information for performing the interception is obtained according to the subframe position of the target cell.
  • an embodiment of the present invention provides a management entity device, including:
  • An interaction unit configured to perform signaling interaction with a cell in a management area of the management entity device
  • control unit configured to control an on/off state of the cell according to a signaling interaction process of the interaction unit.
  • the signaling used in the signaling interaction process includes on/off state information of the cell, whether a target cell of the cell finds a new synchronization source, or At least one of time information of the cell entering the closed state, candidate candidate source cell set of the target cell of the cell, and lower cell information of the target cell of the cell.
  • the manner in which the control unit controls an on/off state of the cell includes:
  • the control unit notifies the each cell to perform a closed state
  • the cell selects an appropriate closed state and performs the closed state
  • the closed state of the cell includes any one of the following states:
  • the cell only sends a discovery signal (DS);
  • the cell sends a DS and is used for an air interface synchronization reference signal
  • the cell only sends an air interface synchronization reference signal
  • State 5 The cell sends an air interface synchronization reference signal only at the listening subframe position of its own target cell, and is turned off at other times.
  • the interaction unit performs signaling
  • the interaction mode includes: a periodic interaction mode, or an event-triggered interaction mode, or an interaction mode based on the combination of the periodic interaction mode and the event-triggered interaction mode.
  • the interaction unit is configured to acquire a candidate synchronization source cell set of each cell in the management area
  • the control unit is configured to acquire, according to a candidate synchronization source cell set of each cell in the management area, a target cell that uses the cell as a candidate synchronization source cell;
  • any one of the cells other than the cell in the set of candidate synchronization source cells is configured as a new source cell of the target cell; or the management entity needs Determining a target cell of the new source cell, and selecting, from a candidate synchronization source cell set, a cell configured as a new source cell of the target cell according to a preset rule.
  • the interaction unit is configured to acquire a candidate synchronization source cell set of each cell in the management area
  • the interaction unit is configured to acquire a candidate synchronization source cell set of each cell in the management area
  • the cell is refused to be closed, or the cell is configured to enter any one of the state 2 to the state 5 to be in a closed state.
  • the interaction unit is configured to acquire a candidate synchronization source cell set of each cell in the management area;
  • the cell When it is determined that the target cell of the new source cell finds a new source cell before the closing time, the cell is allowed to be closed; otherwise, the cell is refused to be closed, or the cell is configured to enter the state 2 to the Any of the states 5 is off.
  • the interaction unit is configured to acquire a candidate synchronization source cell set of each cell in the management area
  • the control unit is configured to notify, by the interaction unit, that the candidate synchronization source cell set the target cell with the cell to be closed, so that the target cell selects the cell in the non-off state from its own candidate synchronization source cell set, and The cell in the non-off state is used as the new source cell of the target cell.
  • control unit is further configured to:
  • All cells in each candidate synchronization source cell set are controlled to be closed at the same time.
  • any one of the interaction units configured to:
  • the closed state of the cell includes: the management entity configuring the cell to ignore a switch state of a target cell of the cell, and making the cell at a predetermined The closing moment enters a closed state, and the cell is awake at a subframe position monitored by the target cell, so that the cell sends an air interface synchronization reference signal to the target cell.
  • control unit is further configured to: by the interaction unit, instruct the cell to periodically detect a new candidate synchronization source cell;
  • the new candidate synchronization source cell level is higher than the current source cell level of the cell, the new candidate synchronization source cell is configured as the cell new source cell.
  • an embodiment of the present invention provides a management entity device, including:
  • a receiving unit configured to receive candidate synchronization source cell information reported by the target cell and subframe position information when the candidate synchronization source is intercepted
  • the notifying unit is configured to notify the neighboring cell of the target cell by using the candidate synchronization source cell information and the subframe position information when the candidate synchronization source is detected;
  • a configuration unit configured to configure a neighboring cell of the target cell to perform silence on a subframe position when the candidate synchronization source is intercepted.
  • the candidate synchronization source cell includes: a cell that belongs to the same operator as the target cell and/or a cell that belongs to a different carrier from the target cell.
  • the neighboring cell of the target cell includes a cell that belongs to the same operator as the target cell, and also includes the target cell Residential areas of different operators.
  • the subframe position information for performing the interception is obtained according to the subframe position of the target cell.
  • the embodiment of the present invention provides a system for implementing air interface synchronization, including the management entity device according to any one of the third aspects, or the management entity device according to any one of the fourth aspects, and the management At least one cell within the management area of the physical device.
  • an embodiment of the present invention provides a computer storage medium, where the storage medium includes a set of computer executable instructions for performing the method for implementing air interface synchronization according to the first aspect.
  • an embodiment of the present invention provides a computer storage medium, where the storage medium includes a set of computer executable instructions, and the instructions are used to perform the method for implementing air interface synchronization according to the second aspect.
  • the embodiment of the invention provides a method, a device, a system and a computer storage medium for implementing air interface synchronization, and the management entity controls the on/off state of the cell through a signaling interaction process with a cell in the management area, thereby After entering the closed state, it will not affect the air interface synchronization of other small cells or even the performance of the entire system.
  • FIG. 1 is a schematic diagram of a scene of air interface synchronization
  • 2A is a schematic diagram of a multi-level air interface synchronization scenario
  • 2B is a schematic diagram of another multi-level air interface synchronization scenario
  • FIG. 3 is a schematic diagram of a method for implementing air interface synchronization according to an embodiment of the present invention
  • FIG. 4A is a schematic flowchart of controlling an on/off state of a cell by a signaling interaction process with a cell in a management area according to an embodiment of the present disclosure
  • FIG. 4B is a schematic flowchart of another method for controlling an on/off state of a cell by using a signaling interaction process with a cell in a management area according to an embodiment of the present disclosure
  • FIG. 4C is still another signaling manner of a cell in a management area according to an embodiment of the present invention.
  • 4D is a schematic flowchart of controlling an on/off state of the cell by a signaling interaction process with a cell in a management area according to an embodiment of the present disclosure
  • FIG. 4E is a schematic flowchart of another method for controlling an on/off state of a cell by using a signaling interaction process with a cell in a management area according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a hierarchical topology diagram according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of another method for implementing air interface synchronization according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a management entity device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another management entity device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a system for implementing air interface synchronization according to an embodiment of the present invention.
  • the target cell may periodically listen to the primary synchronization signal or the secondary synchronization signal (PSS/SSS, Primary Synchronization Signal/Secondary Synchronization Signal) of the source cell through an air interface (referred to as an air interface).
  • PSS/SSS Primary Synchronization Signal/Secondary Synchronization Signal
  • Reference signals such as Cell-specific Reference Signals (CRS) and Positioning Reference Signal (PRS) are used to maintain synchronization.
  • the technical solution of the embodiment of the present invention is described by using the network structure diagram shown in FIG. 2A and FIG. 2B as an example.
  • the coverage area of the macro cell includes several small cells, and these small cells are included.
  • the cell is identified. It can be understood that the embodiment of the present invention can also be applied to other network structures.
  • the small cell 1, the small cell 2, and the small cell 5 are all synchronized by the macro cell, the small cell 3 can be synchronized by the small cell 1, and the small cell 4 can be synchronized by the small cell 2, and the synchronization direction is as solid.
  • the small cells in FIG. 2A may be small cells set up by the same operator, or may be small by different operators.
  • the cell is not specifically limited in this embodiment of the present invention. Thereby, the hierarchy of the plurality of base station cells in FIG. 2A can be divided.
  • FIG. 2A it may be specifically divided into three levels, such as a layer 0 base station, a level 1 base station, a layer 2 base station, and the like.
  • the macro cell may be a level 0 base station
  • the small cell 1, the small cell 2, and the small cell 5 may be a first level base station
  • the small cell 3 and the small cell 4 may be a second level base station.
  • the upper base station and the upper base station The lower layer base station belongs to the relative concept, and the upper layer base station may be the source cell of the lower layer base station, and correspondingly, the lower layer base station is the target cell of the upper layer base station;
  • the small cell 1, the small cell 2, and the small cell 5 are all synchronized by the anchor cell
  • the small cell 3 can be synchronized by the small cell 1
  • the small cell 4 can be synchronized by the small cell 2.
  • the synchronization direction is indicated by a solid arrow.
  • the anchor cell may be a 0th level base station
  • the small cell 1, the small cell 2, and the small cell 5 may be a first level base station
  • the small cell 3 and the small cell 4 may be a second.
  • the hierarchical base station can be understood that the upper base station can be the source cell of the lower layer base station, and the lower layer base station is the target cell of the upper layer base station.
  • the embodiment of the present invention is described by using the scenario shown in FIG. 2A and FIG. 2B as an example. It can be understood that the embodiment of the present invention is not only applicable to FIG. 2A and FIG. 2B. The scene shown.
  • FIG. 3 is a schematic diagram of a synchronization method applied to a management entity in a wireless communication network, where the management entity may be a macro cell in the network shown in FIG. 2A, or may be shown in FIG. 2B.
  • An anchor cell of a small cell cluster in the network may also be a new network component in the network, and the newly added network component may be a logical entity that is independent of the upper layer of the macro cell and the small cell base station; and, the management entity may be in network planning
  • the configuration is performed, or the macro cell is configured by the high layer/physical layer signaling autonomously, or is configured by using the OAM (Operations Administration and Maintenance).
  • OAM Order Administration and Maintenance
  • the synchronization method in the embodiment of the present invention may include:
  • the management entity controls an on/off state of the cell by a signaling interaction process with a cell in the management area.
  • the signaling used for the signaling interaction process may include on/off state information of the cell, whether the target cell of the cell finds a new synchronization source, time information that the cell enters a closed state, and the At least one of a candidate synchronization source cell set of a target cell of the cell and lower cell information of a target cell of the cell.
  • the manner in which the management entity controls the on/off state of the cell may include:
  • the management entity notifies each cell to perform a shutdown state
  • the cell selects an appropriate closed state and performs the closed state
  • the closed state of the cell includes any one of the following states:
  • the cell only sends a discovery signal (DS, Discovery Signal);
  • the cell sends a DS and is used for an air interface synchronization reference signal
  • the cell only sends an air interface synchronization reference signal
  • State 5 The cell sends an air interface synchronization reference signal only at the listening subframe position of its own target cell, and is turned off at other times.
  • the DS and the air interface synchronization reference signal may be any one or a combination of the following signal forms: CRS, Channel State Indication Reference Signals (CSI-RS), PRS, and Customized dedicated reference signals, etc.
  • CRS Channel State Indication Reference Signals
  • CSI-RS Channel State Indication Reference Signals
  • PRS Physical Resource Set
  • Customized dedicated reference signals etc.
  • the management entity may cause the cell to ignore the switch state of the target cell of the cell, and is scheduled.
  • the closing moment enters a closed state; at the same time, the management entity may wake up the cell at the subframe position monitored by the target cell to send an air interface synchronization reference signal number.
  • the manner in which the management entity performs signaling interaction with the cell may include: a periodic interaction mode, or an event-triggered interaction mode, or based on the periodic interaction.
  • the manner in which the mode and the event-triggered interaction are combined in two ways; in the specific implementation of the signaling interaction, the manner in which the management entity performs signaling interaction with the cell may include, but is not limited to, one of the following modes: based on the core network Method for signaling, method based on X2 interface between base stations, method based on system message configuration, method based on radio resource control (RRC) protocol signaling configuration, method based on S1 interface, and based on physical layer signaling
  • RRC radio resource control
  • step S301 may include:
  • the management entity acquires a candidate synchronization source cell set of each cell in the management area.
  • the management area of the management entity may be a coverage area of a macro cell or an anchor cell as a management entity;
  • the current source cell of each cell in the management area is included in a candidate synchronization source cell set of each cell;
  • the candidate synchronization source cell set of the cell in the management entity management area is obtained, which may include any one of the following two methods:
  • the mode A the management entity receives the candidate synchronization source cell set of each cell reported by each cell in the management area; it should be noted that the candidate synchronization source cell set of each cell may pass the signal strength measurement and the physical distance of each cell. Measurement and pre-setting, etc. are determined, and are not specifically limited herein;
  • the management entity may also receive the lower-level cell information sent by each cell in the management area, and generate a synchronous hierarchical topology map according to the lower-level cell information of each cell, as shown in FIG. 2A, the small cell 1 reports its lower level.
  • the cell is a small cell 3, and the small cell 2 reports its own lower-level cell as a small cell 4.
  • the specific hierarchical topology map can select a tree-shaped data structure for the table.
  • the sub-node of a small cell is a sub-cell of the small cell, as shown in FIG. 5;
  • the management entity may also save the candidate synchronization source cell set of each cell.
  • the candidate synchronization source cell set of the small cell 3 may be ⁇ small cell 1, small cell 2 ⁇ .
  • the method B is configured to receive measurement information sent by each cell in the management area, and configure a candidate synchronization source cell set of each cell according to the measurement information.
  • Each cell in the management area may periodically send synchronization measurement information to the management entity, where the measurement information may include measurement information of the current source cell and other cells of the cell, and may be used as a reference for the candidate source cell of the cell, for example, The cell in which the measured value of the signal strength in the measurement information exceeds a certain threshold may be used as the candidate source cell of the cell, etc.; in FIG. 2A, the candidate synchronization source cell set of the small cell 3 may be ⁇ small cell 1, small cell 2 ⁇ .
  • mode A and mode B are two specific forms of acquiring a candidate synchronization source cell set of a cell in the management entity management area, and may be adopted at any time before the management entity controls the on/off state of the cell.
  • the signaling interaction between the management entity and the cell is implemented, which is not specifically limited in this embodiment of the present invention.
  • the management entity receives planned shutdown information reported by the cell.
  • the management entity acquires a target cell that uses the cell as a candidate synchronization source cell according to a candidate synchronization source cell set of each cell in the management area.
  • the management entity notifies the target cell of a closed state of the cell.
  • S3015A The management entity selects one of the candidate synchronization source cell sets of the target cell or selects one non-the cell as the new source cell of the target cell according to a preset rule.
  • the management entity is a target cell that needs to determine a new source cell, and one of the candidate synchronization source cell sets except the cell is configured as a new source cell of the target cell; or
  • the management entity is a target cell that needs to determine a new source cell, and a cell other than the cell in the candidate synchronization source cell set is selected according to a preset rule to be a new source cell of the target cell.
  • the small cell 1 when the small cell 1 is closed, the small cell 1 reports its own closed state to the management entity, and the management entity can communicate with the small cell 3.
  • the closed state information of the small cell 1 is known, and the small cell 2 is configured as a new source cell of the small cell 3 according to the candidate synchronization source cell set of the small cell 3 ⁇ small cell 1 and small cell 2 ⁇ ; or, the small cell 3 is After receiving the closed state of the small cell 1, the source cell of the small cell 1 is switched to the small cell 2 according to the closed state of the small cell 1, and on the listening subframe of the small cell 2, the small cell 3 listens to the small cell 2 by Obtaining air interface synchronization, as indicated by the dotted arrow in FIG. 2A; or measuring other small cells according to the small cell 3, so that the measurement rule according to the signal strength of the small cell 2 and the like is the strongest.
  • the cell 2 is configured as a new source cell of the small cell 3.
  • step S301 may include:
  • S3011B The management entity acquires a candidate synchronization source cell set of each cell in the management area.
  • step S3011B is consistent with the foregoing S3011A process, and details are not described herein again.
  • the management entity receives planned shutdown information reported by the cell.
  • the management entity acquires a target cell that uses the cell as a candidate synchronization source cell according to a candidate synchronization source cell set of each cell in the management area.
  • the management entity negotiates with the cell and the target cell of the cell: if the cell is closed, when the target cell still has a suitable source cell, the cell is allowed to be closed; otherwise, the cell is rejected.
  • the cell closes or configures the cell to enter any one of the state 2 to the state 5 closed state.
  • the small cell 1 When the small cell 1 is closed, the small cell 1 reports the closed state to the management entity, and the management entity can negotiate the small cell 1 and the small cell 3.
  • the small cell 3 When the small cell 3 synchronously listens to the reference signals of other small cells through the air interface, the new cell can be found.
  • the management entity allows the small cell 1 to be closed, and the small cell 3 switches its own source cell to the small cell 2, as indicated by the dashed arrow in FIG. 2A; otherwise, the management entity may not allow the small cell 1 to be closed or
  • the small cell 3 wakes up the small cell 1 when synchronizing by listening to the subframe, so that the small cell 1 can normally transmit the reference signal of the air interface synchronous listening to the small cell 3.
  • step S301 may include:
  • the management entity acquires a candidate synchronization source cell set of each cell in the management area.
  • step S3011C is consistent with the foregoing S3011A process, and details are not described herein again.
  • the management entity receives planned shutdown information reported by the cell.
  • the management entity acquires a target cell that uses the cell as a candidate synchronization source cell according to a candidate synchronization source cell set of each cell in the management area.
  • S3014C When the candidate synchronization source cell set of the target cell includes only the cell, the management entity rejects the cell shutdown, or configures the cell to enter any one of the state 2 to the state 5 to be closed. status.
  • an anchor cell may be added as a source cell of the small cell 1, the small cell 2, and the small cell 5, as shown in FIG. 2B.
  • the management entity may be the small cell 1 and the small cell according to the anchor cell. 2.
  • the only candidate source cell of the small cell 5 does not allow the anchor cell to enter the closed state; or configures the anchor cell to enter any of the state 2 to the closed state of the state 5.
  • step S301 may include:
  • the management entity acquires a candidate synchronization source cell set of each cell in the management area.
  • step S3011D is consistent with the foregoing S3011A process, and details are not described herein again.
  • the management entity receives a closing time reported by the cell.
  • the management entity acquires a target cell that uses the cell as a candidate synchronization source cell according to a candidate synchronization source cell set of each cell in the management area.
  • the management entity notifies the target cell of the closing time of the cell, so that the target cell of the new source cell needs to be determined to find a new source cell before the closing time;
  • the management entity When it is determined that the target cell of the new source cell finds a new source cell before the closing time, the management entity allows the cell to be closed; otherwise, the management entity rejects The cell is closed, or the cell is configured to enter any one of the state 2 to the state 5 to be in a closed state.
  • the small cell 1 When the small cell 1 is about to be closed, the small cell 1 first reports to the management entity time information that it is about to be closed, and the management entity can notify the affected small cell 3 that the small cell 1 is about to be closed and the time when the small cell 1 is about to be closed. After receiving the moment when the small cell 1 is about to be closed, the small cell 3 may enter the air interface synchronous listening attempt phase, and expect to find a new source cell.
  • the management entity allows the small cell 1 to be closed, for example, the small cell 3 finds the new source cell as the small cell 2; otherwise, the management entity does not allow the small cell 1 to be closed; or configures the small cell 1 to enter the state 2 to the state Any of 5 is off.
  • step S301 may include:
  • the management entity acquires a candidate synchronization source cell set of each cell in the management area;
  • step S3011E is consistent with the foregoing S3011A process, and details are not described herein again.
  • S3012E The management entity acquires an on/off state of each cell in the management area.
  • the management entity notifies the candidate synchronization source cell set that the target cell with the cell is closed, so that the target cell selects a cell in the non-off state from its own candidate synchronization source cell set, and the cell in the non-off state is set. As a new source cell of the target cell.
  • the management entity may periodically detect the on/off status of all cells in the management area, or may receive the closed status reported by the cell when a certain cell is closed to obtain the on/off status of all cells in the management area.
  • the target cell of the cell is notified, so that the target cell can select a cell in the non-off state from its own candidate synchronization source cell set as its own new source cell.
  • the method may further include:
  • the management entity controls all cells in each candidate synchronization source cell set to be closed at the same time.
  • the method may further include:
  • the management entity instructs the cell to periodically detect a new candidate synchronization source cell
  • the new candidate synchronization source cell level is higher than the current source cell level of the cell, the new candidate synchronization source cell is configured as the cell new source cell.
  • the embodiment provides a method for implementing air interface synchronization.
  • the management entity controls the on/off state of the cell through a signaling interaction process with a cell in the management area, so that when the small cell enters the closed state, the other entity does not
  • the air interface synchronization of small cells even affects the performance of the entire system.
  • the embodiment of the present invention provides another method for implementing air interface synchronization, and the method may include:
  • the management entity receives candidate synchronization source cell information reported by the target cell and subframe position information when the candidate synchronization source is intercepted.
  • the management entity notifies the candidate synchronization source cell information and the subframe position information when the candidate synchronization source is detected to the neighboring cell of the target cell, and configures the neighboring cell of the target cell to be the listening candidate synchronization source.
  • the sub-frame position performs silence.
  • the candidate synchronization source cell may include: a cell belonging to the same operator as the target cell and/or a cell belonging to a different operator from the target cell.
  • the neighboring cell of the target cell may include a cell that belongs to the same operator as the target cell and/or a cell that belongs to a different operator from the target cell.
  • the subframe position information for performing the interception may be obtained according to the subframe position of the target cell.
  • the current source cell of the small cell 3 is a small cell 1
  • the candidate synchronization source cell set of the small cell 3 is ⁇ small cell 1, small cell 2 ⁇
  • the small cell 4, 5 is the same operator neighboring cell of the small cell 3
  • the management entity performs the small cell 1 to the small cell 1 In the process of synchronous listening, the small cells 2, 4, and 5 are notified to perform muting.
  • the subframe in which the small cell 3 performs synchronous sensing on the small cell 1 is [SF4, RF4], and the management entity notifies the small cell 2 , 4 and 5 are silent at the time of the subframe [SF4, RF4], thereby improving the accuracy of the small cell 3 for synchronously listening to the small cell 1.
  • the method can be implemented separately, or can be implemented as a more preferred embodiment in combination with the embodiment shown in FIG. 3, so as to improve the accuracy of synchronous sensing in different operator cell environments. This is not limited.
  • a management entity 70 is provided in the embodiment of the present invention.
  • the management entity 70 may be a macro cell in the network shown in FIG. 2A or a small cell cluster in the network shown in FIG. 2B.
  • the anchor cell may also be a new network component in the network, and the newly added network component may be a logical entity that is independent of the upper layer of the macro cell and the small cell base station; and the management entity 70 may be configured during network planning, or by a macro.
  • the cell is configured autonomously by the high layer/physical layer signaling, or is configured by using the OAM. The embodiments of the present invention do not specifically limit these.
  • the management entity 70 may include: an interaction unit 701 and a control unit 702, where
  • the interaction unit 701 is configured to perform signaling interaction with a cell in the management area of the management entity device 70;
  • the control unit 702 is configured to control an on/off state of the cell according to a signaling interaction process of the interaction unit 701.
  • the signaling used by the interaction unit 701 for the signaling interaction process may include the on/off state information of the cell, whether the target cell of the cell finds a new synchronization source, and the time information that the cell enters the closed state. And at least one of a candidate synchronization source cell set of the target cell of the cell and a lower cell information of the target cell of the cell.
  • control unit 702 controls the on/off state of the cell may include:
  • the management entity notifies each cell to perform a shutdown state
  • the cell selects an appropriate closed state and performs the closed state
  • the closed state of the cell includes any one of the following states:
  • the cell only sends a discovery signal (DS, Discovery Signal);
  • the cell sends a DS and is used for an air interface synchronization reference signal
  • the cell only sends an air interface synchronization reference signal
  • State 5 The cell sends an air interface synchronization reference signal only at the listening subframe position of its own target cell, and is turned off at other times.
  • the DS and the air interface synchronization reference signal may be any one or a combination of the following signal forms: CRS, Channel State Indication Reference Signals (CSI-RS), PRS, and Customized dedicated reference signals, etc.
  • CRS Channel State Indication Reference Signals
  • CSI-RS Channel State Indication Reference Signals
  • PRS Physical Resource Set
  • Customized dedicated reference signals etc.
  • control unit 702 may cause the cell to ignore the switching state of the target cell of the cell when the configured cell performs the switch state operation, and The predetermined closing time enters a closed state; at the same time, the control unit 702 may wake up the cell at the subframe position monitored by the target cell to transmit an air interface synchronization reference signal.
  • the manner in which the interaction unit 701 performs signaling interaction with the cell may include: a periodic interaction mode, or an event-triggered interaction mode, or based on the periodicity.
  • the interaction mode of the interaction mode and the event-triggered interaction mode; in the specific implementation of the signaling interaction, the manner in which the interaction unit 701 performs signaling interaction with the cell may include, but is not limited to, one of the following modes: Method for core network signaling, method based on X2 interface between base stations, method based on system message configuration, method based on radio resource control (RRC) protocol signaling configuration, method based on S1 interface, and based on physical layer layer.
  • RRC radio resource control
  • the interaction unit 701 is configured to acquire a candidate synchronization source cell set of each cell in the management area;
  • the interaction unit 701 acquires a candidate synchronization source cell of the cell in the management area.
  • the set can include either of the following two methods:
  • the mode A and the interaction unit 701 receive the candidate synchronization source cell set of each cell reported by each cell in the management area. It should be noted that the candidate synchronization source cell set of each cell may pass the signal strength measurement and the physical distance measurement by each cell. And pre-setting and other methods are determined, and are not specifically limited herein;
  • the interaction unit 701 can also receive the lower-level cell information sent by each cell in the management area, and generate a synchronous hierarchical topology map according to the lower-level cell information of each cell, as shown in FIG. 2A, the small cell 1
  • the lower-level cell reported to itself is a small cell 3
  • the small-cell 2 reports its own lower-level cell as a small cell 4.
  • the specific hierarchical topology map can be represented by a tree-shaped data structure, wherein the child node of a small cell is the small
  • the lower cell of the cell is as shown in FIG. 5;
  • the management entity 70 may also save the candidate synchronization source cell set of each cell.
  • the candidate synchronization source cell set of the small cell 3 may be ⁇ small cell 1, small cell 2 ⁇ .
  • the mode B the interaction unit 701 receives the measurement information sent by each cell in the management area, and configures the candidate synchronization source cell set of each cell according to the measurement information.
  • Each of the cells in the management area may periodically send synchronization measurement information to the management entity 70.
  • the measurement information may include measurement information of the current source cell and other cells of the cell, and may be used as a reference for the candidate source cell of the cell. For example, a cell in which the measured value of the signal strength in the measurement information exceeds a certain threshold may be used as a candidate source cell of the cell, etc.; in FIG. 2A, the candidate synchronization source cell set of the small cell 3 may be ⁇ small cell 1 and small cell 2 ⁇ .
  • the mode A and the mode B are two specific forms of the candidate synchronization source cell set of the cell in the management entity management area, and the control unit 702 can control the on/off state of the cell before the control unit 702 controls the on/off state of the cell.
  • the present invention is not limited by the embodiment of the present invention.
  • the control unit 702 is configured to obtain, according to the candidate synchronization source cell set of each cell in the management area. Taking the cell as a target cell of a candidate synchronization source cell;
  • the control unit 702 may be a target cell that needs to determine a new source cell, and one of the candidate synchronization source cell sets except the cell is configured as a new source cell of the target cell; or, the control unit The 702 may be a target cell that needs to determine a new source cell, and select, according to a preset rule, a cell configured as a new source cell of the target cell from a cell other than the cell in the candidate synchronization source cell set.
  • the interaction unit 701 receives the closed state of the small cell 1 and reports the closed state information of the small cell 1, and the control unit 702 is small.
  • the candidate source cell set of the cell 3 ⁇ small cell 1 and small cell 2 ⁇ configures the small cell 2 to be a new source cell of the small cell 3; or, after receiving the closed state of the small cell 1, the small cell 3 according to the small cell
  • the closed state of 1 switches its own source cell to the small cell 2, and on the listening subframe of the small cell 2, the small cell 3 obtains air interface synchronization by listening to the small cell 2, as indicated by the dotted arrow in FIG. 2A.
  • the other small cells may be measured according to the small cell 3, so that the small cell 2 is configured as a new source cell of the small cell 3 according to the preset rule that the signal strength of the small cell 2 is the strongest.
  • the interaction unit 701 is configured to acquire a candidate synchronization source cell set of each cell in the management area. It can be understood that the process of the interaction unit 701 acquiring the candidate synchronization source cell set of each cell is consistent with the foregoing process. This will not be repeated here;
  • the control unit 702 is configured to acquire, according to the candidate synchronization source cell set of each cell in the management area, the target cell that uses the cell as the candidate synchronization source cell;
  • the interaction unit 701 receives the closed state of the small cell 1 reported by itself, and the control unit 702 can negotiate the small cell 1 and the small cell 3, and the small cell 3 listens to the reference of other small cells through the air interface.
  • the control unit 502 allows the small cell 1 to be turned off, and the small cell 3 switches its own source cell to the small cell 2, as indicated by the dashed arrow in FIG.
  • control unit 502 may not Allowing the small cell 1 to be closed, or configuring the small cell 1 to enter any one of the state 2 to the state 5, for example, when the small cell 3 synchronizes by listening to the subframe, the small cell 1 is awakened, so that the small cell 1
  • the reference signal of the air interface synchronous listening can be normally transmitted to the small cell 3.
  • the interaction unit 701 is configured to acquire a candidate synchronization source cell set of each cell in the management area. It can be understood that the process of the interaction unit 701 acquiring the candidate synchronization source cell set of each cell is consistent with the foregoing process. This will not be repeated here;
  • the control unit 702 is configured to acquire, according to the candidate synchronization source cell set of each cell in the management area, the target cell that uses the cell as the candidate synchronization source cell;
  • the cell is refused to be closed, or the cell is configured to enter any one of the state 2 to the state 5 to be in a closed state.
  • an anchor cell can be added as the source cell of the small cell 1, the small cell 2, and the small cell 5.
  • the anchor cell is used as the source cell.
  • the management entity 70 when only the anchor cell is in the set of candidate source cells of the small cell 1, the small cell 2, and the small cell 5, after the interaction unit 701 receives the closed state reported by the anchor cell, the control unit 502 may The anchor cell is allowed to enter a closed state according to the only candidate source cell in which the anchor cell is the small cell 1, the small cell 2, and the small cell 5, or the anchor cell is configured to enter any of the state 2 to the state 5 to be closed.
  • the state for example, wakes up the anchor cell when the small cell 1, the small cell 2, and the small cell 5 synchronize by listening to the subframe, so that the anchor cell can
  • the reference signal of the air interface synchronous listening is normally transmitted to the small cell 1, the small cell 2, and the small cell 5.
  • the interaction unit 701 is configured to acquire a candidate synchronization source cell set of each cell in the management area. It can be understood that the process of the interaction unit 701 acquiring the candidate synchronization source cell set of each cell is consistent with the foregoing process. This will not be repeated here;
  • the control unit 702 is configured to acquire, according to the candidate synchronization source cell set of each cell in the management area, the target cell that uses the cell as the candidate synchronization source cell;
  • the cell When it is determined that the target cell of the new source cell finds a new source cell before the closing time, the cell is allowed to be closed; otherwise, the cell is refused to be closed, or the cell is configured to enter the state 2 to the Any of the states 5 is off.
  • the interaction unit 701 can receive the time information that the small cell 1 reports that it is to be closed.
  • the control unit 502 can notify the affected small cell 3 through the interaction unit 701 that the small cell 1 is about to be closed and the small cell 1 The moment that will be closed.
  • the small cell 3 may enter the air interface synchronous listening attempt phase, and expect to find a new source cell.
  • the control unit 502 allows the small cell 1 to be closed, for example, the small cell 3 finds the new source cell as the small cell 2; otherwise, the control unit 502 does not allow the small cell 1 to be closed, or configures the small cell 1 to enter the state 2 to In any of the states 5, the closed state is awakened, for example, when the small cell 3 synchronizes by the monitoring subframe, so that the small cell 1 can normally transmit the reference signal of the air interface synchronous listening to the small cell 3.
  • the interaction unit 701 is configured to acquire a candidate synchronization source cell set of each cell in the management area;
  • the control unit 702 is configured to notify the candidate synchronization source cell set by the interaction unit 701
  • the target cell with the cell being closed is configured to enable the target cell to select a cell in a non-off state from its own candidate synchronization source cell set, and use the cell in the non-off state as a new source cell of the target cell.
  • the interaction unit 701 may periodically detect an on/off state of all cells in the management area, or may receive a closed state reported by the cell when a certain cell is closed to obtain an on/off state of all cells in the management area; When a certain cell is closed, the control unit 702 may notify the target cell of the cell by using the interaction unit 701, so that the target cell can select a cell in the non-off state from its own set of candidate source cells as its own new source cell.
  • the control unit 702 can also be configured to:
  • All cells in each candidate synchronization source cell set are controlled to be closed at the same time.
  • the control unit 702 is further configured to: by the interaction unit 701, instruct the cell to periodically detect a new candidate synchronization source cell;
  • the new candidate synchronization source cell level is higher than the current source cell level of the cell, the new candidate synchronization source cell is configured as the cell new source cell.
  • the embodiment provides a management entity 70.
  • the control unit 702 controls the on/off state of the cell through the signaling interaction process between the interaction unit 701 and the cell in the management area, so that when the small cell enters the shutdown state, the embodiment does not It affects the air interface synchronization of other small cells and even the performance of the entire system.
  • FIG. 8 is another management entity device 80 according to an embodiment of the present invention, which may include:
  • the receiving unit 801 is configured to receive candidate synchronization source cell information reported by the target cell and subframe position information when the candidate synchronization source is intercepted;
  • the notifying unit 802 is configured to notify the candidate synchronization source cell information and the subframe position information when the candidate synchronization source is detected to the neighboring cell of the target cell;
  • the configuration unit 803 is configured to configure the neighboring cell of the target cell to perform silence on a subframe position when the candidate synchronization source is intercepted.
  • the candidate synchronization source cell may include: a cell belonging to the same operator as the target cell and/or a cell belonging to a different operator from the target cell.
  • the neighboring cell of the target cell may include a cell that belongs to the same operator as the target cell and/or a cell that belongs to a different operator from the target cell.
  • the subframe position information for performing the interception may be obtained according to the subframe position of the target cell.
  • the current source cell of the small cell 3 is a small cell 1
  • the candidate synchronization source cell set of the small cell 3 is ⁇ small cell 1, small cell 2 ⁇
  • the receiving unit 801 can receive the candidate for reporting by the small cell 3.
  • the synchronization source cell is the small cell 1 and the subframe position information when the candidate synchronization source small cell 1 is intercepted; then, in the process of synchronously listening to the small cell 1 by the small cell 3, the notification unit 802 can set the small cell 1
  • the information of the candidate synchronization source cell small cell 3 and the subframe position information when the small cell 1 listens to the candidate synchronization source small cell 3 notify the small cells 2, 4 and 5, so that the configuration unit 803 can make the small cells 2, 4, 5
  • the small cell 3 performs synchronous sensing on the small cell 1, it performs muting.
  • the subframe in which the small cell 3 performs synchronous listening on the small cell 1 is [SF4, RF4], and the management entity notifies the small cells 2, 4, and 5 to silence at the time of the subframe [SF4, RF4], thereby improving the small cell 3 pair.
  • the device 80 can be implemented separately, or can be combined into the device 70 shown in FIG. 7 as a more preferred embodiment to improve the accuracy of synchronous sensing in different operator cell environments. This is not limited.
  • a synchronization control system 90 is provided according to an embodiment of the present invention.
  • the system 90 may include at least one of the management entity 70 or 80 described in any of the foregoing embodiments and the management area of the management entity 70 or 80.
  • the management entity 70 or 80 may be a macro cell in the network shown in FIG. 2A. It may also be an anchor cell of a small cell cluster in the network shown in FIG. 2B, or may be a new network component in the network, and the newly added network component may be a logical entity that is independent of the upper layer of the macro cell and the small cell base station;
  • the management entity 70 or 80 may be configured during the network planning, or configured by the macro cell autonomously through the high layer/physical layer signaling, or configured by using the OAM, which is not specifically limited in the embodiment of the present invention.
  • the candidate synchronization source cell, or the candidate synchronization source cell set may include one or more cells.
  • the source cell currently being monitored by the target cell is also included in the candidate synchronization source cell or the candidate synchronization source cell set information of the target cell.
  • an embodiment of the present invention provides a computer storage medium, where the storage medium includes a set of computer executable instructions, and the instructions are used to perform the method for implementing air interface synchronization described in the embodiment of FIG.
  • an embodiment of the present invention provides a computer storage medium, where the storage medium includes a set of computer executable instructions, and the instructions are used to perform the method for implementing air interface synchronization described in FIG. 6.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明实施例公开了一种实现空口同步的方法、设备、系统和计算机存储介质，该方法可以包括：管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态。

Description

一种实现空口同步的方法、设备、系统和计算机存储介质 技术领域
本发明涉及无线通讯领域的同步技术，尤其涉及一种实现空口同步的方法、设备、系统和计算机存储介质。
背景技术
同步技术与移动通信系统密切相关，基站之间的良好同步可获得更好的系统性能，例如：在干扰协调/干扰避免场景、多媒体广播多播业务、及载波聚合场景等，基站之间的同步是保证这些业务正常运营的必要条件。目前，网络侦听技术广泛的应用于基站之间的同步。在基站之间进行同步的过程中，提供同步信息(信号、信道)的基站可以称为源基站或源小区；而接收同步信息的基站则可以称为目标基站或目标小区。
在长期演进或先进的长期演进(LTE/LTE-A，Long Term Evolution/LTE-Advanced)的小小区(small cell)的部署中，特别是高密度的小小区部署下，从基站节能和降低干扰的角度考虑，会引入小小区开/关(on/off)机制，也就是小小区可以基于一定准则在某个时刻进入关闭状态。但是，当某个小小区进入关闭状态后，会对以该小小区为源小区的其他小小区的空口同步造成影响，从而影响整个系统的性能。
发明内容
有鉴于此，本发明实施例期望提供一种实现空口同步的方法、设备、系统和计算机存储介质，能够实现当小小区进入关闭状态后，不会对其他小小区的空口同步甚至整个系统的性能造成影响。
第一方面，本发明实施例提供了一种实现空口同步的方法，该方法包括：
管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态。
根据第一种可能的实现方式，结合第一方面，用于所述信令交互过程的信令包括所述小区的开/关状态信息、所述小区的目标小区是否找到新的同步源、所述小区进入关闭状态的时刻信息、所述小区的目标小区的候选同步源小区集、所述小区的目标小区的下级小区信息中的至少一项。
根据第二种可能的实现方式，结合第一方面，所述管理实体控制所述小区的开/关状态的方式，包括：
所述管理实体通知所述各小区执行关闭状态；
或者，所述小区选择合适的关闭状态，并执行所述关闭状态；
其中，所述小区的关闭状态包括以下任意一种状态：
状态1、所述小区完全关闭；
状态2、所述小区仅发送发现信号(DS)；
状态3、所述小区发送DS和用于空口同步参考信号；
状态4、所述小区仅发送空口同步参考信号；
状态5、所述小区仅在自身的目标小区的监听子帧位置发送空口同步参考信号，而在其他时刻关闭。
根据第三种可能的实现方式，结合第一方面，所述信令交互的方式包括：基于周期性的交互方式，或者基于事件触发的交互方式，或者基于所述周期性的交互方式与事件触发的交互方式两种方式相结合的交互方式。
根据第四种可能的实现方式，结合第一方面，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
所述管理实体获取所述管理区域内各小区的候选同步源小区集；
所述管理实体接收所述小区上报的计划关闭信息；
所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
所述管理实体向所述目标小区通知所述小区的关闭状态；
所述管理实体为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中任选一个小区配置为所述目标小区新的源小区；或，所述管理实体为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中按照预设规则选择一个小区配置为所述目标小区新的源小区。
根据第五种可能的实现方式，结合第二种可能的实现方式，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
所述管理实体获取所述管理区域内各小区的候选同步源小区集；
所述管理实体接收所述小区上报的计划关闭信息；
所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
所述管理实体与所述小区和所述目标小区进行协商：如果所述小区关闭，当所述目标小区仍有合适的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
根据第六种可能的实现方式，结合第二种可能的实现方式，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
所述管理实体获取所述管理区域内各小区的候选同步源小区集；
所述管理实体接收所述小区上报的计划关闭信息；
所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
当所述目标小区的候选同步源小区集中只包括所述小区时，所述管理实体拒绝所述小区关闭，或配置所述小区进入所述状态2至所述状态5中 的任一个关闭状态。
根据第七种可能的实现方式，结合第二种可能的实现方式，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
所述管理实体获取所述管理区域内各小区的候选同步源小区集；
所述管理实体接收所述小区上报的关闭时刻；
所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
所述管理实体向所述目标小区通知所述小区的关闭时刻，使得需要确定新源小区的目标小区在所述关闭时刻前寻找新的源小区；
当需要确定新源小区的目标小区在所述关闭时刻前寻找到新的源小区时，所述管理实体允许所述小区关闭；否则，所述管理实体拒绝所述小区关闭，或者配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
根据第八种可能的实现方式，结合第一方面，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
所述管理实体获取所述管理区域内各小区的候选同步源小区集；
所述管理实体获取管理区域内各小区的开/关状态；
所述管理实体通知候选同步源小区集中将有小区被关闭的目标小区，使得所述目标小区从自身的候选同步源小区集中选择非关闭的小区，并将所述非关闭的小区作为所述目标小区新的源小区。
根据第九种可能的实现方式，结合第四种至第八种可能的实现方式中的任一项，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态的过程中，所述方法还包括：
所述管理实体控制每个候选同步源小区集中的所有小区不同时关闭。
根据第十种可能的实现方式，结合第四种至第八种可能的实现方式中 的任一项，所述管理实体获取所述管理区域内各小区的候选同步源小区集，包括：
所述管理实体接收管理区域内各小区上报的所述各小区的候选同步源小区集；
或者，接收管理区域内的各小区发送的测量信息，并根据所述测量信息配置所述各小区的候选同步源小区集。
根据第十一种可能的实现方式，结合第一方面，所述关闭状态包括：所述管理实体配置所述小区忽略所述小区的目标小区的开关状态，并使所述小区在预定的关闭时刻进入关闭状态，而且在所述目标小区监听的子帧位置唤醒，使得所述小区发送空口同步参考信号。
根据第十二种可能的实现方式，结合第一方面，所述方法还包括：
所述管理实体指示所述小区周期性侦测新的候选同步源小区；
当所述新的候选同步源小区层级高于所述小区当前的源小区的层级时，将所述新的候选同步源小区配置为所述小区新的源小区。
第二方面，本发明实施例提供了一种实现空口同步的方法，该方法包括：
管理实体接收目标小区上报的候选同步源小区信息及侦听候选同步源时的子帧位置信息；
所述管理实体将所述候选同步源小区信息及侦听候选同步源时的子帧位置信息通知给所述目标小区的邻小区，并配置所述目标小区的邻小区在所述侦听候选同步源时的子帧位置执行静默。
根据第一种可能的实现方式，结合第二方面，所述候选的同步源小区包括：与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
根据第二种可能的实现方式，结合第二方面或者第一种可能的实现方 式，所述目标小区的邻小区包括与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
根据第三种可能的实现方式，结合第二方面或者第一种可能的实现方式，所述执行侦听的子帧位置信息是依据目标小区的子帧位置得出的。
第三方面，本发明实施例提供了一种管理实体设备，包括：
交互单元，配置为与所述管理实体设备的管理区域内的小区进行信令交互的过程；
控制单元，配置为根据所述交互单元的信令交互过程控制所述小区的开/关状态。
根据第一种可能的实现方式，结合第三方面，用于所述信令交互过程的信令包括所述小区的开/关状态信息、所述小区的目标小区是否找到新的同步源、所述小区进入关闭状态的时刻信息、所述小区的目标小区的候选同步源小区集、所述小区的目标小区的下级小区信息中的至少一项。
根据第二种可能的实现方式，结合第三方面，所述控制单元控制所述小区的开/关状态的方式，包括：
所述控制单元通知所述各小区执行关闭状态；
或者，所述小区选择合适的关闭状态，并执行所述关闭状态；
其中，所述小区的关闭状态包括以下任意一种状态：
状态1、所述小区完全关闭；
状态2、所述小区仅发送发现信号(DS)；
状态3、所述小区发送DS和用于空口同步参考信号；
状态4、所述小区仅发送空口同步参考信号；
状态5、所述小区仅在自身的目标小区的监听子帧位置发送空口同步参考信号，而在其他时刻关闭。
根据第三种可能的实现方式，结合第三方面，所述交互单元进行信令 交互的方式包括：基于周期性的交互方式，或者基于事件触发的交互方式，或者基于所述周期性的交互方式与事件触发的交互方式两种方式相结合的交互方式。
根据第四种可能的实现方式，结合第三方面，所述交互单元配置为，获取所述管理区域内各小区的候选同步源小区集；
接收所述小区上报的计划关闭信息；
所述控制单元配置为，根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
通过所述交互单元向所述目标小区通知所述小区的关闭状态；
为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中任选一个小区配置为所述目标小区新的源小区；或，所述管理实体为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中按照预设规则选择一个小区配置为所述目标小区新的源小区。
根据第五种可能的实现方式，结合第二种可能的实现方式，所述交互单元用于，获取所述管理区域内各小区的候选同步源小区集；
接收所述小区上报的计划关闭信息；
所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
通过所述交互单元与所述小区和所述小区的目标小区进行协商：如果所述小区关闭，当所述目标小区仍有合适的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
根据第六种可能的实现方式，结合第二种可能的实现方式，所述交互单元用于，获取所述管理区域内各小区的候选同步源小区集；
接收所述小区上报的计划关闭信息；
所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
当所述目标小区的候选同步源小区集中只包括所述小区时，拒绝所述小区关闭，或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
根据第七种可能的实现方式，结合第二种可能的实现方式，所述交互单元用于，获取所述管理区域内各小区的候选同步源小区集；
接收所述小区上报的关闭时刻；
所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
通过所述交互单元向所述目标小区通知所述小区的关闭时刻，使得需要确定新源小区的目标小区在所述关闭时刻前寻找新的源小区；
当需要确定新源小区的目标小区在所述关闭时刻前寻找到新的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭，或者配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
根据第八种可能的实现方式，结合第三方面，所述交互单元配置为，获取所述管理区域内各小区的候选同步源小区集；
获取管理区域内各小区的开/关状态；
所述控制单元配置为，通过所述交互单元通知候选同步源小区集中将有小区被关闭的目标小区，使得所述目标小区从自身的候选同步源小区集中选择非关闭状态的小区，并将所述非关闭状态的小区作为所述目标小区新的源小区。
根据第九种可能的实现方式，结合第四种至第八种可能的实现方式中的任一项，所述控制单元还配置为：
控制每个候选同步源小区集中的所有小区不同时关闭。
根据第十种可能的实现方式，结合第四种至第八种可能的实现方式中 的任一项，所述交互单元配置为：
接收管理区域内各小区上报的所述各小区的候选同步源小区集；
或者，接收管理区域内的各小区发送的测量信息，并根据所述测量信息配置所述各小区的候选同步源小区集。
根据第十一种可能的实现方式，结合第三方面，所述小区的关闭状态包括：所述管理实体配置所述小区忽略所述小区的目标小区的开关状态，并使所述小区在预定的关闭时刻进入关闭状态，而且在所述目标小区监听的子帧位置唤醒所述小区，使得所述小区向所述目标小区发送空口同步参考信号。
根据第十二种可能的实现方式，结合第三方面，所述控制单元还配置为，通过所述交互单元指示所述小区周期性侦测新的候选同步源小区；
当所述新的候选同步源小区层级高于所述小区当前的源小区的层级时，将所述新的候选同步源小区配置为所述小区新的源小区。
第四方面，本发明实施例提供了一种管理实体设备，包括：
接收单元，配置为接收目标小区上报的候选同步源小区信息及侦听候选同步源时的子帧位置信息；
通知单元，配置为将所述候选同步源小区信息及侦听候选同步源时的子帧位置信息通知给目标小区的邻小区；
配置单元，配置为配置所述目标小区的邻小区在所述侦听候选同步源时的子帧位置执行静默。
根据第一种可能的实现方式，结合第四方面，所述候选的同步源小区包括：与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
根据第二种可能的实现方式，结合第四方面或者第一种可能的实现方式，所述目标小区的邻小区包括与所述目标小区属于相同运营商的小区，也包括与所述目标小区属于不同运营商的小区。
根据第三种可能的实现方式，结合第四方面或者第一种可能的实现方式，所述执行侦听的子帧位置信息是依据目标小区的子帧位置得出的。
第五方面，本发明实施例提供了一种实现空口同步的系统，包括第三方面中任一种所述的管理实体设备或者第四方面中任一种所述的管理实体设备以及所述管理实体设备的管理区域内的至少一个小区。
第六方面，本发明实施例提供了一种计算机存储介质，所述存储介质包括一组计算机可执行指令，所述指令用于执行第一方面所述的实现空口同步的方法。
第七方面，本发明实施例提供了一种计算机存储介质，所述存储介质包括一组计算机可执行指令，所述指令用于执行第二方面所述的实现空口同步的方法。
本发明实施例提供了一种实现空口同步的方法、设备、系统和计算机存储介质，管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，从而当小小区进入关闭状态后，不会对其他小小区的空口同步甚至整个系统的性能造成影响。
附图说明
图1为空口同步的场景示意图；
图2A为一种多层级空口同步的场景示意图；
图2B为另一种多层级空口同步的场景示意图；
图3为本发明实施例提供的一种实现空口同步的方法的示意图；
图4A为本发明实施例提供的一种通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态的流程示意图；
图4B为本发明实施例提供的另一种通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态的流程示意图；
图4C为本发明实施例提供的又一种通过与管理区域内的小区的信令 交互过程控制所述小区的开/关状态的流程示意图；
图4D为本发明实施例提供的再一种通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态的流程示意图；
图4E为本发明实施例提供的又一种通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态的流程示意图；
图5为本发明实施例提供的一种层级拓扑图的示意图；
图6为本发明实施例提供的另一种实现空口同步的方法的示意图；
图7为本发明实施例提供的一种管理实体设备的结构示意图；
图8为本发明实施例提供的另一种管理实体设备的结构示意图；
图9为本发明实施例提供的一种实现空口同步的系统的结构示意图。
具体实施方式
对于网络侦听技术，如图1所示，目标小区可以通过空中接口(简称空口)周期性地侦听源小区的主同步信号或辅同步信号(PSS/SSS，Primary Synchronization Signal/Secondary Synchronization Signal)、小区专用参考信号(CRS，Cell-specific Reference Signals)以及定位参考信号(PRS，Positioning Reference Signal)等参考信号，以保持同步。
在本发明实施例中，以图2A和图2B所示的网络结构示意图为例，对本发明实施例的技术方案进行说明；其中，宏小区的覆盖区域内包括若干个小小区，并对这些小小区进行了标识，可以理解的，本发明实施例还可以应用在其他的网络结构中。
由于基站的部署位置受限，所以有可能需要多跳同步来实现与其他同步源之间的同步。如图2A所示，小小区1、小小区2、小小区5均通过宏小区进行同步，小小区3可以通过小小区1进行同步，小小区4可以通过小小区2进行同步，同步方向如实线箭头所示，可以理解的，图2A中的小小区可以是同一个运营商架设的小小区，也可以是不同的运营商架设的小 小区，本发明实施例对此不作具体限定。由此，可以对图2A中的多个基站小区划分层级。
在图2A中，具体可以划分为三个层级，如第0层级基站、第1层级基站、第2层级基站等等。其中，宏小区可以为第0层级基站，小小区1、小小区2、小小区5可以为第1层级基站，小小区3和小小区4可以为第2层级基站，可以理解的，上层基站与下层基站属于相对的概念，上层基站可以为下层基站的源小区，相应的，下层基站就是上层基站的目标小区；
与之类似的，如图2B所示，小小区1、小小区2、小小区5均通过锚小区进行同步，小小区3可以通过小小区1进行同步，小小区4可以通过小小区2进行同步，同步方向如实线箭头所示，相应的，锚小区可以为第0层级基站，小小区1、小小区2、小小区5可以为第1层级基站，小小区3和小小区4可以为第2层级基站，可以理解的，上层基站可以为下层基站的源小区，下层基站就是上层基站的目标小区。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。
为了能够具体的说明本发明实施例的技术方案，本发明实施例以图2A以及图2B所示的场景作为示例进行说明，可以理解的，本发明实施例不仅仅只适用于图2A以及图2B所示的场景。
参见图3，为本发明实施例提供的一种同步方法，应用于无线通信网络中的管理实体，该管理实体可以是图2A所示的网络中的宏小区，也可以是图2B所示的网络中小小区簇的一个锚小区，还可以是网络中新增的网络构件，新增的网络构件可以为独立出来位于宏小区和小小区基站上层的逻辑实体；而且，管理实体可在网络规划时进行配置、或者由宏小区自主地通过高层/物理层信令进行配置、或者采用营运管理与维护(OAM，Operations Administration and Maintenance)进行配置，本发明实施例对这些不作具体限定。
可以理解的，无论是宏小区还是锚小区作为管理实体，并不影响宏小区或锚小区作为其他小小区的同步源小区，本发明实施例的同步方法可以包括：
S301：管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态。
示例性的，用于信令交互过程的信令可以包括所述小区的开/关状态信息、所述小区的目标小区是否找到新的同步源、所述小区进入关闭状态的时刻信息、所述小区的目标小区的候选同步源小区集、所述小区的目标小区的下级小区信息中的至少一项。
示例性的，所述管理实体控制所述小区的开/关状态的方式，可以包括：
管理实体通知各小区执行关闭状态；
或者，小区选择合适的关闭状态，并执行所述关闭状态；
其中，所述小区的关闭状态包括以下任意一种状态：
状态1、所述小区完全关闭；
状态2、所述小区仅发送发现信号(DS，Discovery Signal)；
状态3、所述小区发送DS和用于空口同步参考信号；
状态4、所述小区仅发送空口同步参考信号；
状态5、所述小区仅在自身的目标小区的监听子帧位置发送空口同步参考信号，而在其他时刻关闭。
需要说明的是，所述DS和空口同步参考信号可以为以下信号形式中的任意一种或几种的组合：CRS，信道状态指示参考信号(CSI-RS，Channel State Indication Reference Signals)，PRS以及自定义的专用参考信号等。
还需要说明的是，在所述小区的关闭状态为状态5的时候，管理实体在配置小区在进行开关状态操作时，可使得所述小区忽略所述小区的目标小区的开关状态，并在预定的关闭时刻进入关闭状态；同时，管理实体可以在所述目标小区监听的子帧位置处唤醒所述小区来发送空口同步参考信 号。
示例性的，在信令交互的时机方面，管理实体与所述小区进行信令交互的方式可以包括：基于周期性的交互方式，或者基于事件触发的交互方式，或者基于所述周期性的交互方式与事件触发的交互方式两种方式相结合的交互方式；在信令交互的具体实现方面，管理实体与所述小区进行信令交互的方式可以包括但不限于以下方式之一：基于核心网信令的方法、基于基站间X2接口的方法、基于系统消息配置的方法、基于无线资源控制(RRC，Radio Resource Control)协议信令配置的方法、基于S1接口的方法和基于物理层信令的方法等，本发明实施例不做具体限定。
示例性的，如图4A所示，步骤S301可以包括：
S3011A、所述管理实体获取所述管理区域内各小区的候选同步源小区集；
这里，所述管理实体的管理区域可以是作为管理实体的宏小区或锚小区的覆盖区域；
其中，所述管理区域内的各小区当前的源小区包括在所述各小区的候选同步源小区集中；
可选的，获取所述管理实体管理区域内的小区的候选同步源小区集，具体可以包括以下两种方式中的任意一种方式：
方式A、所述管理实体接收管理区域内各小区上报的所述各小区的候选同步源小区集；需要说明的是，各小区的候选同步源小区集可以由各小区通过信号强度测量、物理距离测量以及预先设置等方式进行确定，在此不作具体限定；
在方式A中，管理实体还可以接收管理区域内各个小区发送的下级小区信息，并根据各个小区的下级小区信息生成一个同步的层级拓扑图，以图2A为例，小小区1上报自身的下级小区为小小区3，小小区2上报自身的下级小区为小小区4，具体的层级拓扑图可以选择树形的数据结构进行表 示，其中，某个小小区的子节点为该小小区的下级小区，如图5所示；
与此同时，管理实体还可以将各小区的候选同步源小区集进行保存，在图2A中，小小区3的候选同步源小区集可以为{小小区1，小小区2}。
方式B、接收管理区域内的各小区发送的测量信息，并根据所述测量信息配置所述各小区的候选同步源小区集。
所述管理区域内各个小区可以周期性的向管理实体发送同步测量信息，该测量信息可以包括小区当前的源小区以及其他小区的测量信息，可以用来作为小区的候选源小区的一个参考，例如，测量信息中信号强度的测量值超过一定阈值的小区可以作为所述小区的候选源小区等；在图2A中，小小区3的候选同步源小区集可以为{小小区1，小小区2}。
可以理解的，方式A与方式B为获取所述管理实体管理区域内的小区的候选同步源小区集的两种具体形式，可以在管理实体控制所述小区的开/关状态之前的任何时刻通过管理实体与小区之间信令交互来实现，本发明实施例对此不作具体限定。
S3012A、所述管理实体接收所述小区上报的计划关闭信息；
S3013A、所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
S3014A、所述管理实体向所述目标小区通知所述小区的关闭状态；
S3015A、所述管理实体将所述目标小区的候选同步源小区集合中任意一个或按照预设规则选择一个非所述小区配置为所述目标小区新的源小区。
所述管理实体为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中任选一个小区配置为所述目标小区新的源小区；或，所述管理实体为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中按照预设规则选择一个小区配置为所述目标小区新的源小区。在本实施例中，如图2A，当小小区1关闭时，小小区1向管理实体上报自身的关闭状态，管理实体则可以向小小区3通 知小小区1的关闭状态信息，同时根据小小区3的候选同步源小区集{小小区1，小小区2}来配置小小区2为小小区3的新的源小区；或者，小小区3在接收到小小区1的关闭状态之后，依据小小区1的关闭状态，将自身的源小区切换到小小区2，并在小小区2的监听子帧上，小小区3通过侦听小小区2来获得空口同步，如图2A中的虚线箭头所示；或者可以根据小小区3对其他小小区的进行测量，从而按照小小区2的信号强度等测量信息最强这一预设的规则来将小小区2配置为小小区3新的源小区。
示例性的，如图4B所示，步骤S301可以包括：
S3011B、管理实体获取管理区域内各小区的候选同步源小区集；
可以理解的，本步骤S3011B与前述的S3011A过程一致，在此不再赘述。
S3012B、所述管理实体接收所述小区上报的计划关闭信息；
S3013B、所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
S3014B、所述管理实体与所述小区和所述小区的目标小区进行协商：如果所述小区关闭，当所述目标小区仍有合适的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
当小小区1关闭时，小小区1向管理实体上报关闭状态，管理实体可以对小小区1和小小区3进行协商，当小小区3通过空口同步侦听其他小小区的参考信号能够找到新的同步源的时候，则管理实体允许小小区1关闭，小小区3将自身的源小区切换到小小区2，如图2A中虚线箭头所示；否则，管理实体可以不允许小小区1关闭或者在小小区3通过监听子帧进行同步时唤醒小小区1，使得小小区1能够正常地向小小区3发送空口同步侦听的参考信号。
示例性的，如图4C所示，步骤S301可以包括：
S3011C、管理实体获取所述管理区域内各小区的候选同步源小区集；
可以理解的，本步骤S3011C与前述的S3011A过程一致，在此不再赘述。
S3012C、所述管理实体接收所述小区上报的计划关闭信息；
S3013C、所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
S3014C、当所述目标小区的候选同步源小区集中只包括所述小区时，所述管理实体拒绝所述小区关闭，或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
在图2A的基础上，可以增加一个锚小区来作为小小区1、小小区2、小小区5的源小区，如图2B所示。当小小区1、小小区2、小小区5的候选同步源小区集中只有锚小区的时候，当锚小区向管理实体上报自身的关闭状态之后，管理实体可以根据锚小区为小小区1、小小区2、小小区5的仅有的候选源小区来不允许锚小区进入关闭状态；或者配置锚小区进入所述状态2至所述状态5中的任一个关闭状态。
示例性的，如图4D所示，步骤S301可以包括：
S3011D、管理实体获取所述管理区域内各小区的候选同步源小区集；
可以理解的，本步骤S3011D与前述的S3011A过程一致，在此不再赘述。
S3012D、所述管理实体接收所述小区上报的关闭时刻；
S3013D、所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
S3014D、所述管理实体向所述目标小区通知所述小区的关闭时刻，使得需要确定新源小区的目标小区在所述关闭时刻前寻找新的源小区；
S3015D、当需要确定新源小区的目标小区在所述关闭时刻前寻找到新的源小区时，所述管理实体允许所述小区关闭；否则，所述管理实体拒绝 所述小区关闭，或者配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
当小小区1将要关闭时，小小区1首先向管理实体上报自身将要关闭的时刻信息，管理实体可以向受影响的小小区3通知小小区1即将关闭的消息以及小小区1即将关闭的时刻。小小区3在接收到小小区1即将关闭的时刻之后，可以进入空口同步侦听尝试阶段，期望能找到新的源小区，若在小小区1的关闭时刻之前，小小区3能够找到新的源小区，则管理实体允许小小区1关闭，例如小小区3找到新的源小区为小小区2；否则，管理实体不允许小小区1关闭；或者配置小小区1进入所述状态2至所述状态5中的任一个关闭状态。
示例性的，如图4E所示，步骤S301可以包括：
S3011E、所述管理实体获取所述管理区域内各小区的候选同步源小区集；
可以理解的，本步骤S3011E与前述的S3011A过程一致，在此不再赘述。
S3012E、所述管理实体获取管理区域内各小区的开/关状态；
S3013E、所述管理实体通知候选同步源小区集中将有小区被关闭的目标小区，使得所述目标小区从自身的候选同步源小区集中选择非关闭状态的小区，并将所述非关闭状态的小区作为所述目标小区新的源小区。
管理实体可以周期性的探测管理区域内的所有小区的开/关状态，或者可以在某个小区关闭时接收该小区上报的关闭状态来获取管理区域内所有小区的开/关状态。当出现某个小区关闭时，通知该小区的目标小区，使得目标小区能够从自身的候选同步源小区集中选择非关闭状态的小区作为自身新的源小区。
其中，在步骤S301的过程中，该方法还可以包括：
管理实体控制每个候选同步源小区集中的所有小区不同时关闭。
其中，该方法还可以包括：
所述管理实体指示所述小区周期性侦测新的候选同步源小区；
当所述新的候选同步源小区层级高于所述小区当前的源小区的层级时，将所述新的候选同步源小区配置为所述小区新的源小区。
本实施例提供了一种实现空口同步的方法，管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，从而当小小区进入关闭状态后，不会对其他小小区的空口同步甚至整个系统的性能造成影响。
如图6所示，本发明实施例提供了另一种实现空口同步的方法，该方法可以包括：
S601：管理实体接收目标小区上报的候选同步源小区信息及侦听候选同步源时的子帧位置信息；
S602：管理实体将所述候选同步源小区信息及侦听候选同步源时的子帧位置信息通知给目标小区的邻小区，并配置所述目标小区的邻小区在所述侦听候选同步源时的子帧位置执行静默。
示例性的，所述候选的同步源小区可以包括：与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
示例性的，所述目标小区的邻小区可以包括与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
示例性的，所述执行侦听的子帧位置信息可以依据目标小区的子帧位置得出的。
如图2A中，小小区3当前的源小区为小小区1，而小小区3的候选同步源小区集为{小小区1，小小区2}，当小小区3和小小区2，4，5为相同运营商的小小区，小小区4，5为小小区3的同运营商邻小区，而小小区1为不同运营商的小小区的时候，管理实体会在小小区3对小小区1进行同步侦听的过程中，通知小小区2，4和5进行静默(Muting)，比如小小区3对小小区1进行同步侦听的子帧为[SF4，RF4]，管理实体会通知小小区2， 4和5在子帧[SF4，RF4]时刻静默，从而提高小小区3对小小区1进行同步侦听的精度。
可以理解的，该方法可以单独进行实施，也可以作为更加优选的实施方式结合图3所示的实施方式进行实施，以达到不同运营商小区环境下提高同步侦听的精度，本发明实施例对此不作限定。
如图7所示，为本发明实施例提供的一种管理实体70，该管理实体70可以是图2A所示的网络中的宏小区，也可以是图2B所示的网络中小小区簇的一个锚小区，还可以是网络中新增的网络构件，新增的网络构件可以为独立出来位于宏小区和小小区基站上层的逻辑实体；而且管理实体70可在网络规划时进行配置、或者由宏小区自主地通过高层/物理层信令进行配置、或者采用OAM进行配置，本发明实施例对这些不作具体限定。
可以理解的，无论是宏小区还是锚小区作为管理实体70，并不影响宏小区还是锚小区作为其他小小区的同步源小区，管理实体70可以包括：交互单元701和控制单元702，其中，
交互单元701，配置为与管理实体设备70的管理区域内的小区进行信令交互的过程；
控制单元702，配置为根据交互单元701的信令交互过程控制所述小区的开/关状态。
示例性的，交互单元701用于信令交互过程的信令可以包括所述小区的开/关状态信息、所述小区的目标小区是否找到新的同步源、所述小区进入关闭状态的时刻信息、所述小区的目标小区的候选同步源小区集、所述小区的目标小区的下级小区信息中的至少一项。
示例性的，控制单元702控制所述小区的开/关状态的方式，可以包括：
管理实体通知各小区执行关闭状态；
或者，小区选择合适的关闭状态，并执行所述关闭状态；
其中，所述小区的关闭状态包括以下任意一种状态：
状态1、所述小区完全关闭；
状态2、所述小区仅发送发现信号(DS，Discovery Signal)；
状态3、所述小区发送DS和用于空口同步参考信号；
状态4、所述小区仅发送空口同步参考信号；
状态5、所述小区仅在自身的目标小区的监听子帧位置发送空口同步参考信号，而在其他时刻关闭。
需要说明的是，所述DS和空口同步参考信号可以为以下信号形式中的任意一种或几种的组合：CRS，信道状态指示参考信号(CSI-RS，Channel State Indication Reference Signals)，PRS以及自定义的专用参考信号等。
还需要说明的是，在所述小区的关闭状态为状态5的时候，控制单元702在配置小区在进行开关状态操作时，可使得所述小区忽略所述小区的目标小区的开关状态，并在预定的关闭时刻进入关闭状态；同时，控制单元702可以在所述目标小区监听的子帧位置处唤醒所述小区来发送空口同步参考信号。
示例性的，在信令交互的时机方面，交互单元701与所述小区进行信令交互的方式可以包括：基于周期性的交互方式，或者基于事件触发的交互方式，或者基于所述周期性的交互方式与事件触发的交互方式两种方式相结合的交互方式；在信令交互的具体实现方面，交互单元701与所述小区进行信令交互的方式可以包括但不限于以下方式之一：基于核心网信令的方法、基于基站间X2接口的方法、基于系统消息配置的方法、基于无线资源控制(RRC，Radio Resource Control)协议信令配置的方法、基于S1接口的方法和基于物理层信令的方法等，本发明实施例不做具体限定。
示例性的，交互单元701配置为，获取所述管理区域内各小区的候选同步源小区集；
可选的，交互单元701获取所述管理区域内的小区的候选同步源小区 集，可以包括以下两种方式中的任意一种方式：
方式A、交互单元701接收管理区域内各小区上报的所述各小区的候选同步源小区集；需要说明的是，各小区的候选同步源小区集可以由各小区通过信号强度测量、物理距离测量以及预先设置等方式进行确定，在此不作具体限定；
具体的，在方式A中，交互单元701还可以接收管理区域内各个小区发送的下级小区信息，并根据各个小区的下级小区信息生成一个同步的层级拓扑图，以图2A为例，小小区1上报自身的下级小区为小小区3，小小区2上报自身的下级小区为小小区4，具体的层级拓扑图可以选择树形的数据结构进行表示，其中，某个小小区的子节点为该小小区的下级小区，如图5所示；
与此同时，管理实体70还可以将各小区的候选同步源小区集进行保存，在图2A中，小小区3的候选同步源小区集可以为{小小区1，小小区2}。
方式B、交互单元701接收管理区域内的各小区发送的测量信息，并根据所述测量信息配置所述各小区的候选同步源小区集。
所述管理区域内各个小区可以周期性的向管理实体70发送同步测量信息，该测量信息可以包括小区当前的源小区以及其他小区的测量信息，可以用来作为小区的候选源小区的一个参考，例如，测量信息中信号强度的测量值超过一定阈值的小区可以作为所述小区的候选源小区等；在图2A中，小小区3的候选同步源小区集可以为{小小区1，小小区2}。
可以理解的，方式A与方式B为交互单元701获取所述管理实体管理区域内的小区的候选同步源小区集的两种具体形式，可以在控制单元702控制所述小区的开/关状态之前的任何时刻通过交互单元701与小区之间信令交互来实现，本发明实施例对此不作具体限定。
接收所述小区上报的计划关闭信息；
控制单元702配置为，根据管理区域内各小区的候选同步源小区集获 取以所述小区作为候选同步源小区的目标小区；
通过交互单元701向所述目标小区通知所述小区的关闭状态；
将所述目标小区的候选同步源小区集合中任意一个或按照预设规则选择一个非所述小区配置为所述目标小区新的源小区。
控制单元702可以为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中任选一个小区配置为所述目标小区新的源小区；或，控制单元702可以为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中按照预设规则选择一个小区配置为所述目标小区新的源小区。在本实施例中，如图2A，当小小区1关闭时，交互单元701接收小小区1上报的自身的关闭状态，并向小小区3通知小小区1的关闭状态信息，控制单元702根据小小区3的候选源小区集合{小小区1，小小区2}来配置小小区2为小小区3的新的源小区；或者，小小区3在接收到小小区1的关闭状态之后，依据小小区1的关闭状态，将自身的源小区切换到小小区2，并在小小区2的监听子帧上，小小区3通过侦听小小区2来获得空口同步，如图2A中的虚线箭头所示；或者可以根据小小区3对其他小小区的进行测量，从而按照小小区2的信号强度等测量信息最强这一预设的规则来将小小区2配置为小小区3新的源小区。
示例性的，交互单元701配置为，获取所述管理区域内各小区的候选同步源小区集，可以理解的，交互单元701获取各小区的候选同步源小区集的过程与前述的过程一致，在此不再赘述；
接收所述小区上报的计划关闭信息；
控制单元702配置为，根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
通过交互单元701与所述小区和所述小区的目标小区进行协商：如果所述小区关闭，当所述目标小区仍有合适的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭或配置所述小区进入所述状态2至所述状态5中 的任一个关闭状态。
当小小区1关闭时，交互单元701接收小小区1上报的自身的关闭状态，控制单元702可以对小小区1和小小区3进行协商，当小小区3通过空口同步侦听其他小小区的参考信号能够找到新的同步源的时候，则控制单元502允许小小区1关闭，小小区3将自身的源小区切换到小小区2，如图2A中虚线箭头所示；否则，控制单元502可以不允许小小区1关闭，或者配置小小区1进入所述状态2至所述状态5中的任一个关闭状态，例如，在小小区3通过监听子帧进行同步时唤醒小小区1，使得小小区1能够正常地向小小区3发送空口同步侦听的参考信号。
示例性的，交互单元701配置为，获取所述管理区域内各小区的候选同步源小区集，可以理解的，交互单元701获取各小区的候选同步源小区集的过程与前述的过程一致，在此不再赘述；
接收所述小区上报的计划关闭信息；
控制单元702配置为，根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
当所述目标小区的候选同步源小区集中只包括所述小区时，拒绝所述小区关闭，或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
在图2A的基础上，可以增加一个锚小区来作为小小区1、小小区2、小小区5的源小区，如图2B所示，可以理解的，在图2B中，锚小区除了作为源小区以外，还可以作为管理实体70；当小小区1、小小区2、小小区5的候选源小区集合中只有锚小区的时候，当交互单元701接收锚小区上报的关闭状态之后，控制单元502可以根据锚小区为小小区1、小小区2、小小区5的仅有的候选源小区来不允许锚小区进入关闭状态，或者配置锚小区进入所述状态2至所述状态5中的任一个关闭状态，例如，在小小区1、小小区2、小小区5通过监听子帧进行同步时唤醒锚小区，使得锚小区能够 正常地向小小区1、小小区2、小小区5发送空口同步侦听的参考信号。
示例性的，交互单元701配置为，获取所述管理区域内各小区的候选同步源小区集，可以理解的，交互单元701获取各小区的候选同步源小区集的过程与前述的过程一致，在此不再赘述；；
接收所述小区上报的关闭时刻；
控制单元702配置为，根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
通过交互单元701向所述目标小区通知所述小区的关闭时刻，使得需要确定新源小区的目标小区在所述关闭时刻前寻找新的源小区；
当需要确定新源小区的目标小区在所述关闭时刻前寻找到新的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭，或者配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
当小小区1将要关闭时，交互单元701可以接收小小区1上报自身将要关闭的时刻信息，控制单元502可以通过交互单元701向受影响的小小区3通知小小区1即将关闭的消息以及小小区1即将关闭的时刻。小小区3在接收到小小区1即将关闭的时刻之后，可以进入空口同步侦听尝试阶段，期望能找到新的源小区，若在小小区1的关闭时刻之前，小小区3能够找到新的源小区，则控制单元502允许小小区1关闭，例如小小区3找到新的源小区为小小区2；否则，控制单元502不允许小小区1关闭，或者配置小小区1进入所述状态2至所述状态5中的任一个关闭状态，例如，在小小区3通过监听子帧进行同步时唤醒小小区1，使得小小区1能够正常地向小小区3发送空口同步侦听的参考信号。
示例性的，交互单元701配置为，获取所述管理区域内各小区的候选同步源小区集；
获取管理区域内各小区的开/关状态；
控制单元702配置为，通过交互单元701通知候选同步源小区集中将 有小区被关闭的目标小区，使得所述目标小区从自身的候选同步源小区集中选择非关闭状态的小区，并将所述非关闭状态的小区作为所述目标小区新的源小区。
交互单元701可以周期性的探测管理区域内的所有小区的开/关状态，或者可以在某个小区关闭时接收该小区上报的关闭状态来获取管理区域内所有小区的开/关状态；当出现某个小区关闭时，控制单元702可以通过交互单元701通知该小区的目标小区，使得目标小区能够从自身的候选源小区集合中选择非关闭状态的小区作为自身新的源小区。
其中，控制单元702还可以配置为：
控制每个候选同步源小区集中的所有小区不同时关闭。
其中，控制单元702还配置为，通过交互单元701指示所述小区周期性侦测新的候选同步源小区；
当所述新的候选同步源小区层级高于所述小区当前的源小区的层级时，将所述新的候选同步源小区配置为所述小区新的源小区。
本实施例提供了一种管理实体70，控制单元702通过交互单元701与管理区域内的小区的信令交互过程控制所述小区的开/关状态，从而当小小区进入关闭状态后，不会对其他小小区的空口同步甚至整个系统的性能造成影响。
参见图8为本发明实施例提供的另一种管理实体设备80，可以包括：
接收单元801，配置为接收目标小区上报的候选同步源小区信息及侦听候选同步源时的子帧位置信息；
通知单元802，配置为将所述候选同步源小区信息及侦听候选同步源时的子帧位置信息通知给目标小区的邻小区；
配置单元803，配置为配置所述目标小区的邻小区在所述侦听候选同步源时的子帧位置执行静默。
示例性的，所述候选的同步源小区可以包括：与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
示例性的，所述目标小区的邻小区可以包括与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
示例性的，所述执行侦听的子帧位置信息可以依据目标小区的子帧位置得出的。
如图2A中，小小区3当前的源小区为小小区1，而小小区3的候选同步源小区集为{小小区1，小小区2}，当小小区3和小小区2，4，5为相同运营商的小小区，小小区4，5为小小区3的同运营商邻小区，而小小区1为不同运营商的小小区的时候，接收单元801，可以接收小小区3上报的候选同步源小区为小小区1以及侦听候选同步源小小区1时的子帧位置信息；然后，在小小区3对小小区1进行同步侦听的过程中，通知单元802可以将小小区1的候选同步源小区小小区3的信息及小小区1侦听候选同步源小小区3时的子帧位置信息通知小小区2，4和5，使得配置单元803能够使得小小区2，4，5在小小区3对小小区1进行同步侦听时进行静默(Muting)。比如小小区3对小小区1进行同步侦听的子帧为[SF4，RF4]，管理实体会通知小小区2，4和5在子帧[SF4，RF4]时刻静默，从而提高小小区3对小小区1进行同步侦听的精度。
可以理解的，该设备80可以单独进行实施，也可以作为更加优选的实施方式结合到图7所示的设备70中，以达到不同运营商小区环境下提高同步侦听的精度，本发明实施例对此不作限定。
参见图9，为本发明实施例提供的一种同步控制系统90，该系统90可以包括前述任一实施例中所述的管理实体70或80、以及管理实体70或80管理区域内的至少一个小区100；
需要说明的是，管理实体70或80可以是图2A所示的网络中的宏小区， 也可以是图2B所示的网络中小小区簇的一个锚小区，还可以是网络中新增的网络构件，新增的网络构件可以为独立出来位于宏小区和小小区基站上层的逻辑实体；而且管理实体70或80可在网络规划时进行配置、或者由宏小区自主地通过高层/物理层信令进行配置、或者采用OAM进行配置，本发明实施例对这些不作具体限定。
可以理解的，本发明的所有实施例中，所述候选同步源小区，或所述候选同步源小区集可以包含一个或者多个小区。
可以理解的，本发明的所有实施例中，所述目标小区当前侦听的源小区也包含在该目标小区的候选同步源小区或候选同步源小区集信息内。
第六方面，本发明实施例提供了一种计算机存储介质，所述存储介质包括一组计算机可执行指令，所述指令用于执行图3实施例所述的实现空口同步的方法。
第七方面，本发明实施例提供了一种计算机存储介质，所述存储介质包括一组计算机可执行指令，所述指令用于执行图6所述的实现空口同步的方法。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得 通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。

Claims (37)

  1. 一种实现空口同步的方法，该方法包括：
    管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态。
  2. 根据权利要求1所述的方法，其中，用于所述信令交互过程的信令包括所述小区的开/关状态信息、所述小区的目标小区是否找到新的同步源、所述小区进入关闭状态的时刻信息、所述小区的目标小区的候选同步源小区集、所述小区的目标小区的下级小区信息中的至少一项。
  3. 根据权利要求1所述的方法，其中，所述管理实体控制所述小区的开/关状态的方式，包括：
    所述管理实体通知所述各小区执行关闭状态；
    或者，所述小区选择合适的关闭状态，并执行所述关闭状态；
    其中，所述小区的关闭状态包括以下任意一种状态：
    状态1、所述小区完全关闭；
    状态2、所述小区仅发送发现信号DS；
    状态3、所述小区发送DS和用于空口同步参考信号；
    状态4、所述小区仅发送空口同步参考信号；
    状态5、所述小区仅在自身的目标小区的监听子帧位置发送空口同步参考信号，而在其他时刻关闭。
  4. 根据权利要求1所述的方法，其中，所述信令交互的方式包括：基于周期性的交互方式，或者基于事件触发的交互方式，或者基于所述周期性的交互方式与事件触发的交互方式两种方式相结合的交互方式。
  5. 根据权利要求1所述的方法，其中，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
    所述管理实体获取所述管理区域内各小区的候选同步源小区集；
    所述管理实体接收所述小区上报的计划关闭信息；
    所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
    所述管理实体向所述目标小区通知所述小区的关闭状态；
    所述管理实体为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中任选一个小区配置为所述目标小区新的源小区；或，所述管理实体为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中按照预设规则选择一个小区配置为所述目标小区新的源小区。
  6. 根据权利要求3所述的方法，其中，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
    所述管理实体获取所述管理区域内各小区的候选同步源小区集；
    所述管理实体接收所述小区上报的计划关闭信息；
    所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
    所述管理实体与所述小区和所述目标小区进行协商：如果所述小区关闭，当所述目标小区仍有合适的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
  7. 根据权利要求3所述的方法，其中，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
    所述管理实体获取所述管理区域内各小区的候选同步源小区集；
    所述管理实体接收所述小区上报的计划关闭信息；
    所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
    当所述目标小区的候选同步源小区集中只包括所述小区时，所述管 理实体拒绝所述小区关闭，或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
  8. 根据权利要求3所述的方法，其中，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
    所述管理实体获取所述管理区域内各小区的候选同步源小区集；
    所述管理实体接收所述小区上报的关闭时刻；
    所述管理实体根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
    所述管理实体向所述目标小区通知所述小区的关闭时刻，使得需要确定新源小区的目标小区在所述关闭时刻前寻找新的源小区；
    当需要确定新源小区的目标小区在所述关闭时刻前寻找到新的源小区时，所述管理实体允许所述小区关闭；否则，所述管理实体拒绝所述小区关闭，或者配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
  9. 根据权利要求1所述的方法，其中，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态，包括：
    所述管理实体获取所述管理区域内各小区的候选同步源小区集；
    所述管理实体获取管理区域内各小区的开/关状态；
    所述管理实体通知候选同步源小区集中将有小区被关闭的目标小区，使得所述目标小区从自身的候选同步源小区集中选择非关闭的小区，并将所述非关闭的小区作为所述目标小区新的源小区。
  10. 根据权利要求5至9任一项所述的方法，其中，所述管理实体通过与管理区域内的小区的信令交互过程控制所述小区的开/关状态的过程中，所述方法还包括：
    所述管理实体控制每个候选同步源小区集中的所有小区不同时关闭。
  11. 根据权利要求5至9任一项所述的方法，其中，所述管理实体获 取所述管理区域内各小区的候选同步源小区集，包括：
    所述管理实体接收管理区域内各小区上报的所述各小区的候选同步源小区集；
    或者，接收管理区域内的各小区发送的测量信息，并根据所述测量信息配置所述各小区的候选同步源小区集。
  12. 根据权利要求1所述的方法，其中，所述关闭状态包括：所述管理实体配置所述小区忽略所述小区的目标小区的开关状态，并使所述小区在预定的关闭时刻进入关闭状态，而且在所述目标小区监听的子帧位置唤醒，使得所述小区发送空口同步参考信号。
  13. 根据权利要求1所述的方法，其中，所述方法还包括：
    所述管理实体指示所述小区周期性侦测新的候选同步源小区；
    当所述新的候选同步源小区层级高于所述小区当前的源小区的层级时，将所述新的候选同步源小区配置为所述小区新的源小区。
  14. 一种实现空口同步的方法，该方法包括：
    管理实体接收目标小区上报的候选同步源小区信息及侦听候选同步源时的子帧位置信息；
    所述管理实体将所述候选同步源小区信息及侦听候选同步源时的子帧位置信息通知给所述目标小区的邻小区，并配置所述目标小区的邻小区在所述侦听候选同步源时的子帧位置执行静默。
  15. 根据权利要求14所述的方法，其中，所述候选的同步源小区包括：与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
  16. 根据权利要求14或15所述的方法，其中，所述目标小区的邻小区包括与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
  17. 根据权利要求14或15所述的方法，其中，所述执行侦听的子 帧位置信息是依据目标小区的子帧位置得出的。
  18. 一种管理实体设备，包括：
    交互单元，配置为与所述管理实体设备的管理区域内的小区进行信令交互的过程；
    控制单元，配置为根据所述交互单元的信令交互过程控制所述小区的开/关状态。
  19. 根据权利要求18所述的设备，其中，用于所述信令交互过程的信令包括所述小区的开/关状态信息、所述小区的目标小区是否找到新的同步源、所述小区进入关闭状态的时刻信息、所述小区的目标小区的候选同步源小区集、所述小区的目标小区的下级小区信息中的至少一项。
  20. 根据权利要求18所述的设备，其中，所述控制单元控制所述小区的开/关状态的方式，包括：
    所述控制单元通知所述各小区执行关闭状态；
    或者，所述小区选择合适的关闭状态，并执行所述关闭状态；
    其中，所述小区的关闭状态包括以下任意一种状态：
    状态1、所述小区完全关闭；
    状态2、所述小区仅发送发现信号DS；
    状态3、所述小区发送DS和用于空口同步参考信号；
    状态4、所述小区仅发送空口同步参考信号；
    状态5、所述小区仅在自身的目标小区的监听子帧位置发送空口同步参考信号，而在其他时刻关闭。
  21. 根据权利要求18所述的设备，其中，所述交互单元进行信令交互的方式包括：基于周期性的交互方式，或者基于事件触发的交互方式，或者基于所述周期性的交互方式与事件触发的交互方式两种方式相结合的交互方式。
  22. 根据权利要求18所述的设备，其中，
    所述交互单元其中，获取所述管理区域内各小区的候选同步源小区集；
    接收所述小区上报的计划关闭信息；
    所述控制单元其中，根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
    通过所述交互单元向所述目标小区通知所述小区的关闭状态；
    为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中任选一个小区配置为所述目标小区新的源小区；或，所述管理实体为需要确定新源小区的目标小区，从其候选同步源小区集合中除所述小区之外的小区中按照预设规则选择一个小区配置为所述目标小区新的源小区。
  23. 根据权利要求20所述的设备，其中，
    所述交互单元其中，获取所述管理区域内各小区的候选同步源小区集；
    接收所述小区上报的计划关闭信息；
    所述控制单元其中，根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
    通过所述交互单元与所述小区和所述小区的目标小区进行协商：如果所述小区关闭，当所述目标小区仍有合适的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
  24. 根据权利要求20所述的设备，其中，
    所述交互单元其中，获取所述管理区域内各小区的候选同步源小区集；
    接收所述小区上报的计划关闭信息；
    所述控制单元其中，根据管理区域内各小区的候选同步源小区集获 取以所述小区作为候选同步源小区的目标小区；
    当所述目标小区的候选同步源小区集中只包括所述小区时，拒绝所述小区关闭，或配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
  25. 根据权利要求20所述的设备，其中，
    所述交互单元其中，获取所述管理区域内各小区的候选同步源小区集；
    接收所述小区上报的关闭时刻；
    所述控制单元其中，根据管理区域内各小区的候选同步源小区集获取以所述小区作为候选同步源小区的目标小区；
    通过所述交互单元向所述目标小区通知所述小区的关闭时刻，使得需要确定新源小区的目标小区在所述关闭时刻前寻找新的源小区；
    当需要确定新源小区的目标小区在所述关闭时刻前寻找到新的源小区时，允许所述小区关闭；否则，拒绝所述小区关闭，或者配置所述小区进入所述状态2至所述状态5中的任一个关闭状态。
  26. 根据权利要求18所述的设备，其中，
    所述交互单元其中，获取所述管理区域内各小区的候选同步源小区集；
    获取管理区域内各小区的开/关状态；
    所述控制单元其中，通过所述交互单元通知候选同步源小区集中将有小区被关闭的目标小区，使得所述目标小区从自身的候选同步源小区集中选择非关闭状态的小区，并将所述非关闭状态的小区作为所述目标小区新的源小区。
  27. 根据权利要求22至26任一项所述的设备，其中，所述控制单元还其中：
    控制每个候选同步源小区集中的所有小区不同时关闭。
  28. 根据权利要求22至26任一项所述的设备，其中，所述交互单元配置为：
    接收管理区域内各小区上报的所述各小区的候选同步源小区集；
    或者，接收管理区域内的各小区发送的测量信息，并根据所述测量信息配置所述各小区的候选同步源小区集。
  29. 根据权利要求18所述的设备，其中，所述小区的关闭状态包括：所述管理实体配置所述小区忽略所述小区的目标小区的开关状态，并使所述小区在预定的关闭时刻进入关闭状态，而且在所述目标小区监听的子帧位置唤醒所述小区，使得所述小区向所述目标小区发送空口同步参考信号。
  30. 根据权利要求18所述的设备，其中，
    所述控制单元还配置为，通过所述交互单元指示所述小区周期性侦测新的候选同步源小区；
    当所述新的候选同步源小区层级高于所述小区当前的源小区的层级时，将所述新的候选同步源小区配置为所述小区新的源小区。
  31. 一种管理实体设备，包括：
    接收单元，配置为接收目标小区上报的候选同步源小区信息及侦听候选同步源时的子帧位置信息；
    通知单元，配置为将所述候选同步源小区信息及侦听候选同步源时的子帧位置信息通知给目标小区的邻小区；
    配置单元，配置为配置所述目标小区的邻小区在所述侦听候选同步源时的子帧位置执行静默。
  32. 根据权利要求31所述的设备，其中，所述候选的同步源小区包括：与所述目标小区属于相同运营商的小区和/或与所述目标小区属于不同运营商的小区。
  33. 根据权利要求31或32所述的设备，其中，所述目标小区的邻 小区包括与所述目标小区属于相同运营商的小区，也包括与所述目标小区属于不同运营商的小区。
  34. 根据权利要求31或32所述的设备，其中，所述执行侦听的子帧位置信息是依据目标小区的子帧位置得出的。
  35. 一种实现空口同步的系统，包括权利要求18至30任一项所述的管理实体设备或者权利要求31至34任一项所述的管理实体设备、以及所述管理实体设备的管理区域内的至少一个小区。
  36. 一种计算机存储介质，所述存储介质包括一组计算机可执行指令，所述指令用于执行权利要求1-13任一项所述的实现空口同步的方法。
  37. 一种计算机存储介质，所述存储介质包括一组计算机可执行指令，所述指令用于执行权利要求14-17任一项所述的实现空口同步的方法。
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