WO2015106445A1 - Procédé d'interaction pour une synchronisation entre cellules, appareil et système de communication - Google Patents

Procédé d'interaction pour une synchronisation entre cellules, appareil et système de communication Download PDF

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Publication number
WO2015106445A1
WO2015106445A1 PCT/CN2014/070828 CN2014070828W WO2015106445A1 WO 2015106445 A1 WO2015106445 A1 WO 2015106445A1 CN 2014070828 W CN2014070828 W CN 2014070828W WO 2015106445 A1 WO2015106445 A1 WO 2015106445A1
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WO
WIPO (PCT)
Prior art keywords
base station
synchronization
link quality
quality information
information
Prior art date
Application number
PCT/CN2014/070828
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English (en)
Chinese (zh)
Inventor
王轶
张磊
汪巍崴
Original Assignee
富士通株式会社
王轶
张磊
汪巍崴
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 富士通株式会社, 王轶, 张磊, 汪巍崴 filed Critical 富士通株式会社
Priority to PCT/CN2014/070828 priority Critical patent/WO2015106445A1/fr
Priority to CN201480048548.1A priority patent/CN105519026B/zh
Publication of WO2015106445A1 publication Critical patent/WO2015106445A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26136—Pilot sequence conveying additional information

Definitions

  • the present invention relates to the field of communications, and in particular, to an inter-cell synchronization interaction method, apparatus, and communication system. Background technique
  • GPS Global Position System
  • GNSS Global Navigation Satellite System
  • GPS signals may not be received, so GPS/GNSS synchronization cannot be used.
  • synchronization may not be achieved by the synchronization protocol transmitted on the loop.
  • a cell base station that provides a clock synchronization reference for other base stations may be referred to as a donor base station (also referred to as a donor cell), and a cell base station that receives a signal of a donor base station to obtain synchronization may be referred to as a slave base station (also Called slave cell).
  • the base station may be an eNB, or may be another base station, such as a base station of a micro cell.
  • the slave base station can monitor the signal of the donor base station at certain moments, for example, in the multimedia broadcast single frequency network (MBSFN) subframe of the slave base station, and listen to the common reference signal of the donor base station. (CRS, Common Reference Signal), to obtain time and frequency synchronization information.
  • MMSFN multimedia broadcast single frequency network
  • CRS Common Reference Signal
  • the Master eNB 2 (MeNB2) can acquire synchronization directly through the GPS, and the Master eNB 2 can be used.
  • a base station of a certain cell When a base station of a certain cell needs to establish synchronization, it is required to detect a signal used by the surrounding cells to implement cell synchronization, and a base station of one cell may be selected and stratum level information is requested from the base station. For example, when the base station of cell2 needs to establish synchronization, celll can be found, and the base station of celll is requested to obtain the stratum level information of cell1; the base station of celll can send its stratum level information to the base station of cell2. If cell5 of cell2 can also discover cell5, it can request the stratum level information of cell5 from the base station of cell5.
  • the cell base station that needs to establish synchronization selects the cell base station with the lowest stratum level as its donor base station.
  • the base station of cell2 selects the base station of celll as the donor base station because cellatum has a stratum level of 1, and cell5 has a stratum level of 2.
  • the cumulative error can be reduced to some extent.
  • the inventors have found that there is no further provision in the current standard for how to select a cell site that provides a synchronization reference. For example, when the stratum level of the discovered cell base station is the same, how to establish a dorm base station for the cell base station to be synchronized is not provided by the existing standard.
  • Embodiments of the present invention provide an interaction method, device, and communication system for inter-cell synchronization. By adding a new link quality information that reflects the potential donor base station, it can help the slave base station to select a better donor base station.
  • an inter-cell synchronization interaction method comprising: connecting a first base station in a synchronization state with a link quality between a device providing a synchronization reference for the first base station Sending information to the second base station, so that the second base station selects and provides synchronization parameters according to the link quality information Test equipment.
  • an inter-cell synchronization interaction apparatus includes:
  • the information sending unit sends the link quality information between the first base station in the synchronization state and the device that provides the synchronization reference to the first base station to the second base station, so that the second base station is configured according to the link quality information. Select the device that provides the synchronization reference.
  • a communication system including:
  • the first base station sends, to the second base station, link quality information between the first base station and a device that provides a synchronization reference for the first base station;
  • the second base station selects, according to the link quality information, a device that provides a synchronization reference.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to perform an inter-cell synchronization interaction method as described above in the base station .
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an inter-cell synchronization interaction method as described above in a base station.
  • the beneficial effects of the embodiments of the present invention are to provide assistance for the slave base station to select a better donor base station by adding a new link quality information that reflects the potential donor base station.
  • the slave base station can select a better donor base station based on the obtained link quality information of the potential donor base station, thereby improving the performance of the entire synchronization link.
  • FIG. 1 is a schematic diagram of inter-cell synchronization based on an air interface in the prior art
  • FIG. 2 is a flowchart of an interaction method of inter-cell synchronization according to Embodiment 1 of the present invention
  • FIG. 3 is another flowchart of an interaction method of inter-cell synchronization according to Embodiment 1 of the present invention.
  • FIG. 4 is a diagram showing an example of an interaction method of inter-cell synchronization according to Embodiment 1 of the present invention.
  • FIG. 5 is another example diagram of an interaction method of inter-cell synchronization according to Embodiment 1 of the present invention.
  • FIG. 6 is a flowchart of an interaction method of inter-cell synchronization according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic structural diagram of an inter-cell synchronization interaction apparatus according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic structural diagram of a base station according to Embodiment 3 of the present invention.
  • FIG. 9 is a schematic diagram showing the structure of an inter-cell synchronization interaction apparatus according to Embodiment 4 of the present invention.
  • Figure 10 is a block diagram showing the configuration of a communication system according to a fifth embodiment of the present invention.
  • the embodiment of the present invention provides an interaction method for inter-cell synchronization, which is described from the device in the synchronization state (ie, the donor base station).
  • 2 is a flowchart of an interaction method of inter-cell synchronization according to an embodiment of the present invention. As shown in FIG. 2, the method includes:
  • Step 201 Send link quality information between the first base station in the synchronization state and the device that provides the synchronization reference for the first base station to the second base station, so that the second base station selects to provide synchronization according to the link quality information.
  • Reference device Send link quality information between the first base station in the synchronization state and the device that provides the synchronization reference for the first base station to the second base station, so that the second base station selects to provide synchronization according to the link quality information. Reference device.
  • the first base station may be a base station that is already in a synchronized state
  • the second base station may be a base station that is in an unsynchronized state.
  • the base station in the embodiment of the present invention may be a base station of a macro cell, a base station of a pico cell, or a base station of a femto cell.
  • the present invention is not limited thereto, and may be, for example, a remote radio head (RRH) or the like.
  • the device that provides the synchronization reference for the first base station may be a base station that has already been synchronized, and may also be GPS or the like.
  • the device providing the synchronization reference may have one or more levels. For example, as shown in FIG.
  • the device that provides the synchronization reference for the first base station (for example, the base station of cell1 in FIG. 1) is MeNB1, and the device that provides the synchronization reference for MeNB1 is GPS.
  • the first base station, the second base station, and the device that provides the synchronization reference for the first base station a specific device can be determined according to actual conditions.
  • a cell base station e.g., an eNB
  • the link quality information may include: Signal to Interference plus Noise Ratio (SINR) information, Reference Signal Received Power (RSRP) information, or reference signal reception quality (RSRQ, Reference Signal Received Quality) Information; however, the invention is not limited thereto.
  • SINR Signal to Interference plus Noise Ratio
  • RSRP Reference Signal Received Power
  • RSSQ Reference Signal Received Quality
  • the second base station in the unsynchronized state can obtain the link quality information of the first base station (ie, the potential donor base station), and in the case of obtaining the link quality information of the plurality of potential donor base stations, for example, the second base station, for example
  • the synchronization device with the best link quality can be selected to provide assistance for the second base station to select a better donor base station.
  • FIG. 3 is another flowchart of an inter-cell synchronization interaction method according to an embodiment of the present invention. As shown in FIG. 3, the method includes:
  • Step 301 Obtain link quality information between the first base station and a device that provides a synchronization reference for the first base station.
  • Step 302 Send the link quality information, the state information of the first base station, and/or the synchronization level information to the second base station, so that the second base station selects to provide according to the link quality information, the state information, and/or the synchronization level information.
  • the link quality information such as SINR, RSRP, or RSRQ
  • the status information of the first base station may be, for example, information indicating that the first base station is in a synchronized state
  • the synchronization level information of the first base station may be, for example, It is stratum level information.
  • the first base station may send the link quality information and the status information of the first base station to the second base station; or may send the link quality information and the synchronization level information of the first base station to the second Or the base station; or the link quality information, the status information of the first base station, and the synchronization level information of the first base station may be sent to the second base station.
  • the second base station may select the device providing the synchronization reference according to the link quality information, the state information of the first base station, and/or the synchronization level information of the first base station.
  • the following takes the example of sending link quality information and synchronization level information as an example.
  • FIG. 4 is a diagram showing an example of an interaction method of inter-cell synchronization according to an embodiment of the present invention.
  • the base station 401 of the macro cell, the base station 402 of the small cell1, and the base station 403 of the small cell 2 are in a synchronized state.
  • the base station 401 provides a synchronization reference by the GPS, and the stratum level is 0.
  • the base station 402 and the base station 403 provide the synchronization reference by the base station 401, and the stratum level is 1.
  • the SINR between the base station 401 and the base station 402 is -8 dB
  • the SINR between the base station 401 and the base station 403 is -4 dB.
  • the base station 404 can request the base station 402 and the base station 403 to transmit respective stratum level information and link quality information, such as SINR, of each and the previous level of the donor base station.
  • stratum level information and link quality information such as SINR
  • the base station 404 can select one of the base stations (e.g., the base station 402 of the celll) as its donor base station according to the stratum level and SINR information respectively sent by the base station 402 and the base station 403.
  • a cell/base station that has acquired synchronization can transmit its own link quality information with its donor cell/base station to other cells/base stations.
  • the link quality information of the cell/base station and the donor cell/base station of the upper level may be sent only.
  • the link quality information of the cell/base station and the donor cell/base station of the upper or higher level of the cell/base station may also be sent.
  • the device that provides the synchronization reference for the first base station may further have one or more levels of devices that provide synchronization reference; the method further includes: a chain between devices that provide synchronization reference at one or more levels.
  • the road quality information is sent to the second base station.
  • FIG. 5 is another example diagram of an interaction method of inter-cell synchronization according to an embodiment of the present invention.
  • the base station 501 of the macro cell, the base station 502 of the small cell1, the base station 503 of the small cell 2, the base station 504 of the small celB, the base station 505 of the small cell 4, and the base station 506 of the small cell 5 are in a synchronized state.
  • base station 501 is powered by GPS A synchronization reference is provided, and the stratum level is 0;
  • the base station 502 and the base station 503 are provided with a synchronization reference by the base station 501, and the stratum level is 1, respectively.
  • the base station 504 and the base station 505 are provided with a synchronization reference by the base station 502, and the base station 506 is provided with a synchronization reference by the base station 503, each having a stratum level of two.
  • the SINR between the base station 501 and the base station 502 is -8 dB
  • the SINR between the base station 501 and the base station 503 is -4 dB
  • the SINR between the base station 502 and the base station 504 is 2 dB
  • the SINR between the base station 502 and the base station 505 is ldB
  • the SINR between the base station 503 and the base station 506 is 2 dB.
  • the base station 507 of the small cell 6 is a slave base station, and small celB, small cell 4, and small cell 5 can be found.
  • the base station 507 can request the stratum level information of the base station 504, the base station 505, and the base station 506, and the link quality information, such as the SINR, of the respective and all higher-level donor base stations.
  • the base station 507 of the small cell 6 may select one of the base stations (e.g., the base station 505) as its donor base station according to the stratum level and SINR information respectively sent by the base station 504, the base station 505, and the base station 506.
  • link quality information between devices providing synchronization reference at one or more levels can be provided, which provides further assistance for selecting a better donor base station for the second device.
  • How the slave base station selects a donor base station from a plurality of potential donor base stations can be determined according to actual conditions. For example, the base station with the lowest stratum level may be selected first, and then one base station with the best link quality may be selected from the lowest base station of the stratum level; or the link quality and the stratum level may be jointly considered, for example, multiple potential donor base stations The link quality and the stratum level are respectively brought into a performance function, and the base station with the highest synchronization accuracy is selected.
  • inter-cell synchronization can be implemented based on the air interface.
  • link quality information described above can be transmitted based on the air interface, the S1 loop, or the X2 loop.
  • the slave base station and the donor base station may send or receive link quality information for synchronization through an interface defined between the base stations.
  • it can be through an S1 loop, or an X2 loop, or a newly defined base station.
  • the interface is either sent or received over the air interface.
  • the link quality information between the base station and the device providing the synchronization reference for the base station, and the synchronization status information and the stratum level can be actively sent by the donor base station.
  • the base station may be a Physical Downlink Shared Channel (PDSCH) or a Physical Uplink Shared Channel (PUSCH), or a Physical Downlink Control Channel (PDCCH) or a physical downlink control channel (PDCCH).
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • PDCCH Physical Downlink Control Channel
  • PDCCH physical downlink control channel
  • the form-bearing and synchronization-related information (such as the above-mentioned link quality information, synchronization status information, and stratum level) of the uplink control channel (PUCCH) may also be carried by the newly defined physical channel.
  • the physical resources occupied by the channel for transmitting the synchronization-related information may be fixed, such as its time period and time offset, and the occupied frequency domain resources are one or more sets that can be fixed in advance.
  • the time-frequency resources occupied by different base stations can be staggered to avoid strong interference.
  • the time-frequency resources occupied by different base stations may vary depending on, for example, the stratum level.
  • the base station receiving the synchronization and related information may detect the information on the corresponding resource according to a predetermined rule.
  • the link quality information may include a value, for example, the interactive link quality information may be an absolute value.
  • the link quality information may include an interval value reflecting the quality of the link; it may be a value quantized according to a preferentially set table.
  • Table 1 schematically shows link quality indication information. As shown in Table 1, for example, the interval of the link quality can be reflected by the way of the link indication bit.
  • the link quality information is only schematically illustrated above, but the present invention is not limited thereto. The following describes how to send link quality information.
  • the link quality information may be sent to the second base station periodically.
  • the cell/base station that has established the synchronization may send the link quality information to the surrounding cell/base station or the subordinate cell/base station.
  • the link quality information may also be sent to the second base station if the trigger condition is met.
  • the triggering condition may include: receiving a synchronization reference request sent by the second base station; or the first base station re-establishing synchronization; or the first base station determining that the link quality changes.
  • a cell when a cell initially establishes inter-cell synchronization, it may request other cells/base stations to send link quality information; or when a cell that has established synchronization loses synchronization and needs to re-synchronize, may request other cells/base stations to send link quality information; Or when a cell finds that the link quality changes significantly, it can request link quality information from other cells/base stations.
  • the synchronized cell/base station may send the link quality information only after receiving the request of the other cell/base station; or after the cell re-establishes the synchronization, it may actively send the link quality information to other cells/base stations; or When the cell finds that the link quality changes significantly, it can actively send link quality information to other cells/base stations.
  • the embodiment of the present invention provides an inter-cell synchronization interaction method, which is described on the side of a device (ie, a slave base station) that needs to be synchronized.
  • a device ie, a slave base station
  • the same content as that in Embodiment 1 is not described herein.
  • FIG. 6 is a flowchart of an interaction method of inter-cell synchronization according to an embodiment of the present invention. As shown in FIG. 6, the method includes:
  • Step 601 The second base station receives, by using one or more first base stations, link quality information between the first base station and a device that provides a synchronization reference for the first base station.
  • Step 602 The second base station selects, according to the received link quality information, a device that provides a synchronization reference from one or more first base stations.
  • the first base station may be a base station that is already in a synchronized state
  • the second base station may be a base station that is still in an unsynchronized state.
  • the second base station (slave base station) can synchronize after selecting a device (e.g., donor base station) that provides a synchronization reference. How to synchronize can refer to the prior art.
  • the second base station may further receive status information and/or synchronization level information of the first base station, and the second base station may be based on the received link quality information, status information of the first base station, and/or synchronization level information.
  • the second base station may further receive, by the first base station, link quality information between the devices that provide the synchronization reference in one or more levels; and provide the synchronization reference according to the first base station and the first base station. Link quality information between devices, and link quality information between devices providing synchronization reference at one or more levels to select a device that provides a synchronization reference.
  • FIG. 7 is a schematic structural diagram of an inter-cell synchronization interaction apparatus according to an embodiment of the present invention. As shown in FIG. 7, the interaction apparatus 700 includes:
  • the information sending unit 701 sends, to the second base station, link quality information between the first base station in the synchronization state and the device that provides the synchronization reference for the first base station, so that the second base station selects to provide synchronization according to the link quality information. Reference device.
  • the link quality information may include: signal to interference and noise ratio information, reference signal received power information, or reference signal reception quality information; however, the present invention is not limited thereto.
  • the link quality information may include, for example, a value or an interval value reflecting the quality of the link.
  • the information sending unit 701 is further configured to send status information and/or synchronization level information of the first base station to the second base station.
  • the first base station further has one or more levels of devices that provide synchronization reference; the information sending unit 701 is further configured to send link quality information between the devices that provide synchronization reference in one or more levels to Second base station.
  • the information transmitting unit 701 can transmit link quality information based on an air interface, an S1 loop, or an X2 loop.
  • the information transmitting unit 701 can periodically transmit the link quality information to the second base station.
  • the link quality information may be sent to the second base station if the trigger condition is met; wherein the triggering condition may include: receiving a synchronization reference request sent by the second base station; or the first base station re-establishing synchronization; or the first base station It is judged that the link quality has changed.
  • the interaction apparatus 700 may further include: an information acquiring unit 702, configured to acquire link quality information between a first base station and a device that provides a synchronization reference for the first base station.
  • the embodiment of the present invention further provides a base station, which is a first base station in a synchronized state, and includes an inter-cell synchronization interaction device as described above.
  • FIG. 8 is a schematic diagram of a structure of a base station according to an embodiment of the present invention.
  • base station 800 can include: a central processing unit (CPU) 200 and memory 210; and memory 210 coupled to central processor 200.
  • the memory 210 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 200 to receive various information transmitted by the user equipment and to transmit request information to the user equipment.
  • the functionality of the inter-synchronized interactive device can be integrated into the central processor 200.
  • the central processing unit 200 may be configured to perform control of: transmitting link quality information between the base station in a synchronized state and a device that provides a synchronization reference for the base station to the second base station, so that the second base station is configured according to The link quality information selects a device that provides a synchronization reference.
  • the central processing unit 200 may be further configured to: control status information and/or synchronization level information of the base station to the second base station, so that the second base station is configured according to the link quality information, the status information And/or synchronization level information to select the device that provides the synchronization reference.
  • the device that provides the synchronization reference for the base station further has a device that provides a synchronization reference in one or more stages; the central processor 200 can also be configured to perform the following control: the device that provides the synchronization reference in the one or more stages The link quality information between the two is sent to the second base station.
  • the inter-synchronous interaction device may be configured separately from the central processing unit.
  • the inter-cell synchronization interaction device may be configured as a chip connected to the central processing unit 200, and the cell is implemented by the control of the central processing unit. The function of an interactive device that is synchronized.
  • the base station 800 may further include: a transceiver 220, an antenna 230, and the like; wherein the functions of the above components are similar to the prior art, and details are not described herein again. It should be noted that the base station 800 does not necessarily have to include all of the components shown in FIG. 8. In addition, the base station 800 may also include components not shown in FIG. 8, and reference may be made to the prior art.
  • FIG. 9 is a schematic structural diagram of an inter-cell synchronization interaction apparatus according to an embodiment of the present invention. As shown in FIG. 9, the interaction apparatus 900 includes:
  • the information receiving unit 901 receives, by using one or more first base stations, link quality information between the first base station and a device that provides a synchronization reference for the first base station;
  • the synchronization selecting unit 902 selects a device that provides a synchronization reference from one or more first base stations according to the received link quality information.
  • the first base station may be a base station that is already in a synchronized state.
  • Synchronization selection unit 902 can synchronize after selecting a device (e.g., donor base station) that provides a synchronization reference. How to synchronize specifically can refer to the prior art.
  • the information receiving unit 901 may further receive status information and/or synchronization level information of the first base station, and the synchronization selecting unit 902 may select according to the received link quality information, status information, and/or synchronization level information.
  • the information receiving unit 901 may further receive link quality information between the devices that provide the synchronization reference by the first base station, and the synchronization selection unit 902 may also be configured according to the first base station.
  • the first base station provides link quality information between devices that are synchronized reference, and link quality information between devices that provide synchronization reference at one or more levels to select a device that provides a synchronization reference.
  • the embodiment of the invention further provides a base station, which is a second base station in an unsynchronized state, and includes an inter-cell synchronization interaction device as described above.
  • the configuration of the base station can be as shown in FIG.
  • the functionality of the inter-synchronized interactive device can be integrated into the central processor 200.
  • the inter-synchronous interaction device may be configured separately from the central processing unit.
  • the inter-cell synchronization interaction device may be configured as a chip connected to the central processing unit 200, and the cell is implemented by the control of the central processing unit. The function of an interactive device that is synchronized.
  • the embodiment of the present invention further provides a communication system, which includes a first base station and a second base station, and the same contents as those in Embodiments 1 to 4 are not described herein.
  • FIG. 10 is a block diagram showing a configuration of a communication system according to an embodiment of the present invention.
  • the communication system 1000 includes a first base station 1001 and a second base station 1002.
  • the first base station 1001 transmits the link quality information between the first base station 1001 and the device that provides the synchronization reference for the first base station 1001 to the second base station 1002.
  • the second base station 1002 is configured according to the link quality information. Select the device that provides the synchronization reference.
  • the first base station 1001 may be a base station in a synchronized state, including the inter-cell synchronization interaction apparatus as described in Embodiment 3; the second base station 1002 may be a base station in an unsynchronized state, including the embodiment. 4 The inter-cell synchronization interaction device.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to perform inter-cell synchronization interaction as described in Embodiment 1 or 2 above in the base station method.
  • Embodiments of the present invention also provide a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform an inter-cell synchronization interaction method as described in Embodiment 1 or 2 above in a base station.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

Abstract

Selon des modes de réalisation, la présente invention concerne un procédé d'interaction pour une synchronisation entre cellules, un appareil et un système de communication, le procédé comprenant : l'envoi d'informations de qualité de liaison entre une première station de base dans un état de synchronisation et un dispositif qui fournit une référence de synchronisation pour la première station de base à une seconde station de base, permettant à la seconde station de base de sélectionner le dispositif qui fournit la référence de synchronisation sur la base des informations de qualité de liaison. Selon les modes de réalisation de la présente invention, un meilleur dispositif utilisé pour fournir une référence de synchronisation peut être sélectionné sur la base des informations de qualité de liaison, améliorant ainsi l'efficacité d'une liaison de synchronisation totale.
PCT/CN2014/070828 2014-01-17 2014-01-17 Procédé d'interaction pour une synchronisation entre cellules, appareil et système de communication WO2015106445A1 (fr)

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CN201480048548.1A CN105519026B (zh) 2014-01-17 2014-01-17 小区间同步的交互方法、装置以及通信系统

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CN101150829A (zh) * 2006-09-20 2008-03-26 富士通株式会社 移动用户终端、移动通信系统、基站和通信方法
CN101822096A (zh) * 2007-10-12 2010-09-01 Lm爱立信电话有限公司 降低移动通信网络中掉话风险的方法
CN102447584A (zh) * 2012-01-04 2012-05-09 无锡云捷科技有限公司 一种vpn链路优化系统及方法

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US8614975B2 (en) * 2008-09-19 2013-12-24 Qualcomm Incorporated Synchronizing a base station in a wireless communication system
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CN101150829A (zh) * 2006-09-20 2008-03-26 富士通株式会社 移动用户终端、移动通信系统、基站和通信方法
CN101822096A (zh) * 2007-10-12 2010-09-01 Lm爱立信电话有限公司 降低移动通信网络中掉话风险的方法
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