WO2017107331A1 - 一种多载波下的载波聚合实现方法及基站 - Google Patents

一种多载波下的载波聚合实现方法及基站 Download PDF

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Publication number
WO2017107331A1
WO2017107331A1 PCT/CN2016/077781 CN2016077781W WO2017107331A1 WO 2017107331 A1 WO2017107331 A1 WO 2017107331A1 CN 2016077781 W CN2016077781 W CN 2016077781W WO 2017107331 A1 WO2017107331 A1 WO 2017107331A1
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WIPO (PCT)
Prior art keywords
cell
carrier
terminal
base station
carrier corresponding
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PCT/CN2016/077781
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English (en)
French (fr)
Inventor
李小捷
史凡
樊华
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP16877145.9A priority Critical patent/EP3383108A4/en
Publication of WO2017107331A1 publication Critical patent/WO2017107331A1/zh
Priority to US16/016,692 priority patent/US20180310311A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • H04L5/0073Allocation arrangements that take into account other cell interferences
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and a base station for implementing carrier aggregation under multiple carriers.
  • a common inter-frequency six-sector networking structure is a networking mode based on a multi-carrier inter-frequency strategy.
  • the so-called inter-frequency six-sector means that six sectors are established under one base station, and the frequency points of two adjacent sectors are staggered. Each sector can only utilize resources corresponding to one frequency, and cannot use adjacent fans.
  • the frequency resource of the district The area of a sector is relatively small, and the resource coverage capability is relatively strong. However, resources corresponding to one frequency can only be utilized in a small area, resulting in low utilization of carrier frequency resources.
  • the embodiments of the present invention provide a carrier aggregation implementation method and a base station in a multi-carrier, which are used to solve the problem of low carrier resource utilization in the prior art and improve carrier resource utilization.
  • a first aspect of the present invention provides a method for implementing carrier aggregation under multiple carriers, which may include:
  • the base station establishes a first cell and a second cell
  • the base station configures a first carrier corresponding to the first cell as a carrier aggregation (CA) primary carrier of the terminal, and configures a second carrier corresponding to the second cell as a CA secondary carrier of the terminal, where the terminal The first cell is located, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell;
  • CA carrier aggregation
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry the control information corresponding to the data information; or
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the base station configures the first carrier corresponding to the first cell as the CA primary carrier of the CA terminal, and then configures the second carrier corresponding to the second cell as the CA terminal.
  • CA secondary carrier configures the first carrier corresponding to the first cell as the CA primary carrier of the CA terminal, and then configures the second carrier corresponding to the second cell as the CA terminal.
  • the area where the CA terminal is located is not covered by the common control signal carried by the second carrier corresponding to the second cell, that is, the CA terminal cannot send and receive data through the control channel on the second carrier corresponding to the second cell, but can pass the
  • the data channel on the second carrier corresponding to the second cell transmits and receives data, where the data includes control information and data information, and therefore, the data information of the CA terminal and the dedicated reference signal (data information) may be carried by the second carrier corresponding to the second cell.
  • the dedicated reference signal is carried on the data channel of the second carrier to fully utilize the second carrier corresponding to the second cell to improve carrier resource utilization.
  • the first carrier may be used to carry the control information corresponding to the data information of the first carrier, or the second carrier corresponding to the second cell may be used to carry the data information.
  • Corresponding control information (because the CA terminal is not covered by the common control signal carried by the second carrier corresponding to the second cell, where the control information is carried by the data channel on the second carrier corresponding to the second cell)
  • the control information can be correctly obtained, and the modulation and encoding of the data information is completed.
  • the data of the CA terminal is carried by the second carrier corresponding to the second cell, whether the first carrier corresponding to the first cell carries the corresponding control information or the data on the second carrier corresponding to the second cell
  • the channel carries the corresponding control information, and the control channel on the second carrier corresponding to the second cell is not used. Then, even at this time, the control channel on the second carrier corresponding to the second cell is used in the second cell.
  • the terminal sends control information, and does not cause co-channel interference on the control channel between the first cell and the second cell.
  • the common control signal provided in some embodiments of the present invention is used to provide a cell measurement reference signal, a broadcast message, and the like to the terminal to satisfy network access of the terminal and data transmission on the control channel.
  • the common control signal may include a Common Reference Signal (CRS), a Physical Dedicated Chanel (PBCH) control information, and a System Information Brocast (SIB).
  • CRS Common Reference Signal
  • PBCH Physical Dedicated Chanel
  • SIB System Information Brocast
  • control information is used for modulation and encoding of data information, such as Modulation and Coding Scheme (MCS) information.
  • MCS Modulation and Coding Scheme
  • the enhanced physical downlink control channel in the data channel on the second carrier may be specifically used (Enhanced Physical Downlink Control Channel) , referred to as EPDCCH) to bear.
  • the control information corresponding to the data carried by the first carrier may be carried by a Physical Downlink Control Channel (PDCCH) on the control channel of the first carrier.
  • PDCH Physical Downlink Control Channel
  • the establishing, by the base station, the first cell and the second cell is implemented by: the base station transmitting the first beam and the second beam by using an antenna, where the first beam is used to send the first carrier corresponding to the first cell.
  • the common control signal is carried by the common control signal carried by the first carrier corresponding to the first cell to form a first cell, and the second beam is used to send a common control signal carried by the second carrier corresponding to the second cell, and then The common control signal carried by the second carrier corresponding to the second cell covers the second cell.
  • the base station can transmit two beams through the antenna, and the spatial orientations of the two beams are different, each beam corresponds to one direction, and the beam in one direction covers one cell, then the carrier transmitted by the beam
  • the public control signal carried will also cover the corresponding cell. That is, by overlapping the overlapping coverage areas of the first cell and the second cell as much as possible in the spatial orientation of the antenna (the so-called overlapping coverage area refers to the common control signal carried by the first carrier corresponding to the first cell, also The common control signal carried by the second carrier corresponding to the second cell is covered) to reduce signal interference at the cell edge.
  • the reduction of the overlapping coverage area of the first cell and the second cell further indicates that more areas in the first cell are not covered by the common control signal carried by the second carrier corresponding to the second cell, and then there is a More terminals satisfy the requirements of the CA terminal, so that the second carrier corresponding to the second cell carries the data information of the terminal in the partial area, thereby expanding the data coverage of the second cell and improving the channel capacity.
  • the base station may transmit the first beam and the second beam through one antenna, or may transmit the first beam through one antenna, and then transmit the second beam through another antenna.
  • one antenna here can be composed of one or more antennas.
  • the establishing, by the base station, the first cell and the second cell may also be implemented in the following manner: the base station sets the first power and/or the first tilt angle, and the base station further sets the second power and/or The second angle of inclination.
  • the base station transmits a first power and/or a common control signal corresponding to the first tilt angle through the antenna, and forms a first cell by using a common control signal.
  • the base station transmits a common control signal corresponding to the second power and/or the second tilt angle through the antenna, and forms a second cell by using the common control signal. Since the overlapping coverage areas of the first cell and the second cell are reduced by controlling the power and/or the tilt angle, the purpose of reducing interference between cells and increasing channel capacity is achieved.
  • the foregoing base station establishes the first cell and the second cell
  • the first carrier corresponding to the first cell and the second carrier corresponding to the second cell are used to carry data information of the CA terminal
  • the The common control signal carried by the second carrier corresponding to the second cell such as the CRS, completes the time-frequency synchronization of the CA terminal on the second carrier.
  • the overlapping coverage area also facilitates handover between the first cell and the second cell, for example, when the CA terminal moves to an overlapping coverage area (a first cell edge area, the edge area is connected to the second cell)
  • Channel quality index (CQI) measurement is performed by detecting a common control signal carried by the second carrier, so that the channel quality of the second cell is perceived to determine whether cell handover is required.
  • the first cell and the second cell may be two adjacent cells, for example, two adjacent ones of the six sectors may be regarded as the first cell and the second cell in the embodiment of the present invention.
  • the first cell and the second cell may also be inclusive, that is, the second cell is in the first cell, that is, the overlapping coverage area of the first cell and the second cell is equal to the second cell.
  • the base station may configure a space division multiplexing (SDM) scheduling policy for the second carrier corresponding to the second cell, and then, according to the SDM scheduling policy, the base station may be scheduled in different spaces.
  • SDM space division multiplexing
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the second carrier corresponding to the second cell is used to carry the data information sent by the CA terminal, and the second carrier corresponding to the second cell is used to send the user-specific measurement signal, the user-specific measurement signal covers the first
  • the CA terminal can correctly parse the user-specific measurement signals to complete the corresponding measurements, thereby implementing the corresponding services.
  • another base station may also establish a third cell, where the third cell corresponds to the second carrier, and the second cell and the third cell do not. If the coverage area is overlapped, the second carrier corresponding to the second cell is the second cell terminal carrying data, and the second carrier corresponding to the third cell is the third cell terminal carrying data, and the second cell and the third cell are not caused. Interference (including interference on the data channel and control channel). Further, in this scenario, the area where the CA terminal is located is not covered by the common control signal carried by the second carrier corresponding to the second cell, and the area where the CA terminal is located is not in the first cell and the third cell.
  • the second carrier corresponding to the second cell is the bearer data information and the dedicated reference signal
  • the second carrier corresponding to the third cell can be used as the terminal of the third cell to carry data.
  • the CA terminal utilizes the second carrier of the second cell and the third cell corresponding to the third cell
  • the CA terminal does not cause signal interference.
  • the other base station does not use the second carrier corresponding to the third cell
  • the first base station may call the second carrier corresponding to the second cell to carry data information for the CA terminal in the overlapping coverage area of the first cell and the third cell.
  • the CA terminal on the overlapping coverage area of the first cell and the third cell uses the second carrier corresponding to the second cell, and the second carrier corresponding to the third cell in the third cell is based on time division Use the mode.
  • a second aspect of the present invention provides a method for implementing carrier aggregation under multiple carriers, which may include:
  • the first base station establishes a first cell
  • the first base station configures a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configures a second carrier corresponding to the second cell as a CA secondary carrier of the terminal, and the second cell is configured by a second
  • the base station is established, and the terminal is located in the first cell, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry the control information corresponding to the data information; or
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the second aspect is compared with the carrier aggregation implementation method under the multi-carrier provided by the first aspect.
  • the first base station only establishes the first cell
  • the second cell is established by the second base station.
  • First One cell corresponds to the first carrier
  • the second cell corresponds to the second carrier
  • the common control channel inter-frequency between the two cells is implemented, thereby reducing interference between the common control channels of the two cells.
  • the base station uses the first carrier corresponding to the first cell
  • the CA primary carrier is configured as the CA terminal
  • the second carrier corresponding to the second cell is configured as the CA secondary carrier of the CA terminal.
  • the area where the CA terminal is located is not covered by the common control signal carried by the second carrier corresponding to the second cell, that is, the CA terminal cannot send and receive data through the control channel on the second carrier corresponding to the second cell, but can pass the
  • the data channel on the second carrier corresponding to the second cell transmits and receives data, where the data includes control information and data information, and therefore, the data information of the CA terminal and the dedicated reference signal (data information) may be carried by the second carrier corresponding to the second cell.
  • the dedicated reference signal is carried on the data channel of the second carrier to fully utilize the second carrier corresponding to the second cell to improve carrier resource utilization.
  • the first carrier may be used to carry the control information corresponding to the data information of the first carrier, or the second carrier corresponding to the second cell may be used to carry the data information.
  • Corresponding control information (because the CA terminal is not covered by the common control signal carried by the second carrier corresponding to the second cell, where the control information is carried by the data channel on the second carrier corresponding to the second cell)
  • the control information can be correctly obtained, and the modulation and encoding of the data information is completed.
  • the data of the CA terminal is carried by the second carrier corresponding to the second cell, whether the first carrier corresponding to the first cell carries the corresponding control information or the data on the second carrier corresponding to the second cell
  • the channel carries the corresponding control information, and the control channel on the second carrier corresponding to the second cell is not used, and then the terminal in the second cell is sent through the control channel on the second carrier corresponding to the second cell.
  • the control information also does not cause co-channel interference on the control channel between the first cell and the second cell.
  • the common control signal provided in some embodiments of the present invention is used to provide a cell measurement reference signal, a broadcast message, and the like to the terminal to satisfy network access of the terminal and data transmission on the control channel.
  • the common control signal may include CRS, PBCH, SIB, and the like.
  • control information is used for modulation and encoding of data information, such as MCS information.
  • the EPDCCH of the data channel on the second carrier may be specifically carried.
  • the PDCCH may be carried by using the PDCCH on the control channel of the first carrier.
  • the establishing, by the first base station, the first cell is implemented by: the first base station transmitting the first beam by using a pair of antennas, where the first beam is used to send the first carrier corresponding to the first cell.
  • the common control signal is then overlaid by the common control signal carried by the first carrier corresponding to the first cell to form the first cell.
  • the first base station may spatially orient the first beam, so that the first beam corresponds to one direction, and then covers the first cell in the direction.
  • the second cell is established by the second base station, where the second base station transmits a second beam through a pair of antennas, and the second beam is used to send a common control signal carried by the second carrier corresponding to the second cell. And then forming a second cell by using a common control signal carried by the second carrier corresponding to the second cell.
  • the second base station spatially orients the second beam, so that the second beam corresponds to another direction, and then covers the second cell in the direction.
  • the first base station spatially orients the first beam
  • the second base station spatially orients the second beam, ensuring that the first beam and the second beam spatially correspond to different methods to reduce the first An overlapping coverage area of the cell and the second cell.
  • the establishing, by the first base station, the first cell may also be implemented by: the first base station setting the first power and/or the first tilt base station transmitting the first power and/or the first antenna through a pair of antennas A common control signal corresponding to an inclination angle forms a first cell by a common control signal.
  • the second cell is established by the second base station, the second base station sets the second power and/or the second tilt angle, and the second base station transmits the second power and/or the second tilt angle through a pair of antennas.
  • the second cell is formed by the common control signal.
  • the first base station controls the power and/or the tilt angle
  • the second base station also reduces the overlapping coverage area of the first cell and the second cell by controlling the power and the tilt angle, thereby reducing inter-cell interference and improving channel capacity. purpose.
  • one antenna used by the first base station and one antenna used by the second base station are two different antennas, and each antenna may be composed of one or more antennas.
  • the first base station establishes the first cell and the second cell
  • the public control signal carried by the second carrier corresponding to the second cell on the overlapping coverage area such as CRS, is required to complete the CA.
  • the overlapping coverage area also facilitates handover between the first cell and the second cell, for example, when the CA terminal moves to an overlapping coverage area (a first cell edge area, the edge area is connected to the second cell)
  • Channel quality index (CQI) measurement is performed by detecting a common control signal carried by the second carrier, so that the channel quality of the second cell is perceived to determine whether cell handover is required.
  • the first cell and the second cell may be two adjacent cells, for example, two adjacent ones of the six sectors may be regarded as the first cell and the second cell in the embodiment of the present invention.
  • the first cell and the second cell may also be inclusive, that is, the second cell is in the first cell, that is, the overlapping coverage area of the first cell and the second cell is equal to the second cell.
  • the first base station may configure an SDM scheduling policy for the second carrier corresponding to the second cell, and then, according to the SDM scheduling policy, the first base station may schedule the corresponding second cell in different spaces.
  • the second carrier is the bearer data information and the dedicated reference signal of the CA terminal, and the second base station may schedule the second carrier corresponding to the second cell to be the bearer data information and the control information of the second cell.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the second carrier corresponding to the second cell is used to carry the data information sent by the CA terminal, and the second carrier corresponding to the second cell is used to send the user-specific measurement signal, the user-specific measurement signal covers the first
  • the CA terminal can correctly parse the user-specific measurement signals to complete the corresponding measurements, thereby implementing the corresponding services.
  • the third cell may also establish a third cell, where the third cell is also the second carrier, the second cell, and the third cell. If there is no overlapping coverage area, the second carrier corresponding to the second cell is the second cell terminal carrying data, and the second carrier corresponding to the third cell is the third cell terminal carrying data, and the second cell and the third cell are not caused. Inter-cell interference (including interference on data channels and control channels).
  • the area where the CA terminal is located is not covered by the common control signal carried by the second carrier corresponding to the second cell, and the area where the CA terminal is located is not in the first cell and If the second carrier corresponding to the second cell is the bearer carrying the data information and the dedicated reference signal, the second carrier corresponding to the third cell may be the terminal of the third cell at the same time.
  • the bearer data does not cause signal interference when the CA terminal utilizes the second carrier of the second cell and the third cell corresponding to the third cell.
  • the third base station does not use the second carrier corresponding to the third cell, the first base station may call the second carrier corresponding to the second cell to carry data for the CA terminal in the overlapping coverage area of the first cell and the third cell.
  • the CA terminal on the overlapping coverage area of the first cell and the third cell uses the second carrier corresponding to the second cell, and the second carrier corresponding to the third cell in the third cell is based on time division Use the mode.
  • a third aspect of the present invention provides a base station, which may include:
  • a configuration module configured to configure a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configure a second carrier corresponding to the second cell as a CA secondary carrier of the terminal, where the terminal is in the foregoing a cell, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry the control information corresponding to the data information; or
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the first cell and the second cell are established by using a setup module, and then the first carrier corresponding to the first cell is configured as a carrier aggregation CA primary carrier of the terminal, and the second cell is configured by the configuration module.
  • the corresponding second carrier is configured as the CA secondary carrier of the terminal, and can be corresponding to the second cell when the terminal is in the first cell and is not covered by the common control signal carried by the second carrier corresponding to the second cell.
  • the second carrier carries data information and a dedicated reference signal to improve resource utilization and increase traffic channel capacity.
  • the establishing module is specifically configured to: send, by using an antenna, a first beam and a second beam, where the first beam is used to send a common control signal carried by the first carrier corresponding to the first cell, where the foregoing
  • the common control signal carried by the first carrier corresponding to a cell covers the above a second cell is configured to send a common control signal carried by the second carrier corresponding to the second cell, and a common control signal carried by the second carrier corresponding to the second cell covers the second cell.
  • the base station further includes: a scheduling module, configured to schedule a second carrier corresponding to the second cell in different spaces, and use the second carrier corresponding to the second cell to carry data information of the terminal and The dedicated reference signal and the terminal bearer data information covered by the second carrier corresponding to the second cell.
  • a scheduling module configured to schedule a second carrier corresponding to the second cell in different spaces, and use the second carrier corresponding to the second cell to carry data information of the terminal and The dedicated reference signal and the terminal bearer data information covered by the second carrier corresponding to the second cell.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the common control signal includes a common reference signal CRS, physical broadcast channel PBCH control information, and system broadcast information SIB.
  • the third cell configures a second carrier, where the second cell and the first cell have overlapping coverage areas, and the second cell and The third cell has no overlapping coverage area, and the area where the terminal is located is not in the overlapping coverage area of the first cell and the second cell, and is not in the overlapping coverage area of the first cell and the third cell, and the other base stations are not
  • the scheduling module is further configured to schedule the second carrier corresponding to the second cell, when the second carrier corresponding to the third cell is scheduled.
  • a fourth aspect of the present invention provides a base station, which may include:
  • a configuration module configured to configure a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configure a second carrier corresponding to the second cell as a CA secondary carrier of the terminal, where the second cell is configured by The second base station is established, the terminal is in the first cell, and the area where the terminal is located is not covered by the common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry the control information corresponding to the data information; or
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the first cell is established by using a setup module, and combined with the second base station.
  • the second cell is configured, the first carrier corresponding to the first cell is configured as a carrier aggregation CA primary carrier of the terminal, and the second carrier corresponding to the second cell is configured as a CA secondary carrier of the terminal,
  • the second carrier corresponding to the second cell can carry data information and a dedicated reference signal to improve resource utilization. Rate, increase traffic channel capacity.
  • the establishing module is configured to: send, by using an antenna, a first beam, where the first beam is used to send a common control signal carried by the first carrier corresponding to the first cell, where the first cell corresponds to The common control signal carried by the first carrier covers the first cell formed above.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the common control signal includes a common reference signal CRS, physical broadcast channel PBCH control information, and system broadcast information SIB.
  • the base station further includes: a scheduling module, configured to schedule a second carrier corresponding to the second cell in different spaces, and use the second carrier corresponding to the second cell to carry data information of the terminal and The dedicated reference signal and the terminal bearer data information covered by the second carrier corresponding to the second cell.
  • a scheduling module configured to schedule a second carrier corresponding to the second cell in different spaces, and use the second carrier corresponding to the second cell to carry data information of the terminal and The dedicated reference signal and the terminal bearer data information covered by the second carrier corresponding to the second cell.
  • the third base station if the third base station establishes the third cell, the third cell configures the second carrier, the second cell and the first cell have overlapping coverage areas, and the second cell and the third cell
  • the overlapping area is not overlapped, and the area where the terminal is located is not in the overlapping coverage area of the first cell and the second cell, and is not in the overlapping coverage area of the first cell and the third cell, and the third base station does not schedule the foregoing.
  • the scheduling module is further configured to schedule the second carrier corresponding to the second cell when the second carrier corresponding to the third cell is used.
  • a fifth aspect of the present invention provides a base station, which may include:
  • the processor is configured to execute a program instruction stored in the memory
  • the processor is further configured to: establish a first cell and a second cell, configure a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configure a second carrier corresponding to the second cell to be the foregoing a CA secondary carrier of the terminal, where the terminal is in the first cell, and the terminal The area is not covered by the common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry the control information corresponding to the data information; or
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the processor is specifically configured to: transmit, by using an antenna, a first beam and a second beam, where the first beam is used to send a common control signal carried by the first carrier corresponding to the first cell, where The common control signal carried by the first carrier corresponding to a cell covers the first cell; the second beam is used to send a common control signal carried by the second carrier corresponding to the second cell, and the second carrier corresponding to the second cell
  • the bearer's common control signal covers the formation of the second cell described above.
  • the processor is further configured to schedule a second carrier corresponding to the second cell in different spaces, and use the second carrier corresponding to the second cell to carry data information and a dedicated reference signal of the terminal. And the terminal carrying data information that is covered by the second carrier corresponding to the second cell.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the common control signal includes a common reference signal CRS, physical broadcast channel PBCH control information, and system broadcast information SIB.
  • the third cell configures a second carrier, where the second cell and the first cell have overlapping coverage areas, and the second cell and The third cell has no overlapping coverage area, and the area where the terminal is located is not in the overlapping coverage area of the first cell and the second cell, and is not in the overlapping coverage area of the first cell and the third cell, and the other base stations are not
  • the processor is further configured to schedule the second carrier corresponding to the second cell.
  • a sixth aspect of the present invention provides a base station, which may include:
  • the processor is configured to execute a program instruction stored in the memory
  • the processor is further configured to: establish a first cell, configure a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configure a second carrier corresponding to the second cell as a CA secondary carrier of the terminal
  • the second cell is established by the second base station, and the terminal is located in the first cell, and the area where the terminal is located is not covered by the common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry the control information corresponding to the data information; or
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the processor is specifically configured to: transmit, by using an antenna, a first beam, where the first beam is used to send a common control signal carried by the first carrier corresponding to the first cell, where the first cell corresponds to The common control signal carried by the first carrier covers the first cell formed above.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the common control signal includes a common reference signal CRS, physical broadcast channel PBCH control information, and system broadcast information SIB.
  • the processor is further configured to schedule a second carrier corresponding to the second cell in different spaces, and use the second carrier corresponding to the second cell to carry data information and a dedicated reference signal of the terminal. And the terminal carrying data information that is covered by the second carrier corresponding to the second cell.
  • the third cell configures the second carrier, the second cell and the first cell have overlapping coverage areas, and the second cell and the third cell
  • the overlapping area is not overlapped, and the area where the terminal is located is not in the overlapping coverage area of the first cell and the second cell, and is not in the overlapping coverage area of the first cell and the third cell, and the third base station does not schedule the foregoing.
  • the processor is further configured to schedule the second carrier corresponding to the second cell, when the second carrier corresponding to the third cell is used.
  • FIG. 1a is a cellular network structure according to some embodiments of the present invention.
  • Figure 1b is a public network networking structure provided by some embodiments of the present invention.
  • FIG. 2 is a schematic flowchart of a method for implementing carrier aggregation under multi-carrier according to an embodiment of the present disclosure
  • 2b is a schematic structural diagram of a part of a cellular network structure according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for implementing carrier aggregation in multiple carriers according to another embodiment of the present invention
  • 4a is a schematic diagram of application of cross-carrier bearer data information according to an embodiment of the present invention.
  • 4b is a schematic diagram of cross-carrier scheduling according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of application of a carrier aggregation implementation method under multi-carrier according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • FIG. 8 is another schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 9 is another schematic structural diagram of a base station according to an embodiment of the present invention.
  • the embodiments of the present invention provide a method for implementing carrier aggregation under multiple carriers, which is used to improve carrier resource utilization and improve service capacity.
  • the embodiment of the present invention further provides a base station corresponding to a carrier aggregation implementation method under multiple carriers.
  • the carrier aggregation implementation method provided by the embodiment of the present invention can be applied to a cellular network in a cellular communication system, for example, a six-sector networking, and can also be applied to a public network (the so-called public network networking refers to a public network).
  • the public network refers to the common circuit-switched network, such as the backbone of DeutscheInstitut, China Mobile, etc. And branch network).
  • the cellular network and the public network are described briefly.
  • the base station can use omnidirectional antennas to implement cell coverage, or directional antennas can be used to implement cell coverage.
  • an omnidirectional antenna to implement cell coverage refers to implementing one cell coverage or multiple cell coverage by one omnidirectional antenna (when multiple cells correspond to different carriers).
  • the use of a directional antenna to implement cell coverage refers to implementing one cell coverage or multiple cell coverage by one directional antenna (when multiple cells correspond to different carriers).
  • One pair of omnidirectional antennas is composed of one or more omnidirectional antennas, and one pair of directional antennas is composed of one or more directional antennas.
  • FIG. 1 is a cellular network structure according to some embodiments of the present invention.
  • a base station adopts a 120-degree directional antenna to implement two cell coverage as an example, that is, one base station is configured with three directional antennas. The orientation of the three directional antennas is different, and each antenna covers a range of 120°.
  • a base station is represented by a triangle, and a thick black line extending from a triangle in Fig. 1a indicates a pair of directional antennas. As shown in Fig.
  • the base station is disposed in a central region of the hexagon, each The secondary directional antenna corresponds to two cells, that is, one base station can cover 6 cells (corresponding to 7 hexagons).
  • one pair of directional antennas generates beams in two directions, one direction of the beam covers one cell, and the other direction of the beam covers another cell.
  • a total of six cells are covered, and seven hexagons are obtained.
  • the cellular structure shown in Fig. 1a is obtained.
  • the embodiments of the present invention can be implemented based on the antenna structure of the existing base station without increasing the hardware cost of the antenna system.
  • one directional antenna can generate beams in more than two directions, for example, three or four directions. In this case, one directional antenna can cover three cells and four cells.
  • the invention is not limited thereto.
  • Fig. 1a the coverage of two cells is realized by a pair of directional antennas.
  • the coverage of one cell can be realized by one antenna.
  • one base station shown in FIG. 1a covers six cells (corresponding to seven hexagons)
  • six directional antennas need to be configured, each pair of directional antennas pointing to one cell, and each pair of directional antennas covers a range of 60°.
  • the directional antenna generates a beam in one direction and covers one cell, thereby obtaining a cellular network structure of 6 cells of a base station.
  • any two adjacent cells in a cell under one base station correspond to different carriers, wherein three cells with relatively dark colors correspond to one carrier, and the other three are relatively light in color.
  • the cell corresponds to another carrier, and an inter-frequency six-sector network (sector is regarded as the cell in FIG. 1a) is implemented in the cellular network.
  • FIG. 1b illustrates a public network networking structure according to some embodiments of the present invention.
  • a base station may implement one or more omnidirectional antennas to implement cell coverage, or may use one or more directional antennas to implement a cell. cover.
  • two cells are implemented by using one pair of directional antennas, that is, one base station is configured with one pair of directional antennas, and one pair of directional antennas is directed to two cells, which are cell 1 and cell 2.
  • one pair of directional antennas generates beams in two directions, one direction of the beam covers the cell 1 and the other direction of the beam covers the cell 2.
  • a pair of directional antennas may also generate beams in three directions, four directions, or even four or more directions, corresponding to covering three cells, four cells, and four or more cells, and the present invention is This is not limited.
  • a directional antenna is used to generate two directional beams, one beam covering cell 1 and the other beam covering cell 2.
  • a directional antenna can also generate a beam in one direction.
  • the base station needs to configure two directional antennas, and one directional antenna generates a beam in one direction, the beam covers the cell 1 and the other directional antenna generates The beam in the other direction covers cell 2.
  • FIG. 1b it can also be implemented by two base stations, such as base station 1 and base station 2.
  • the base station 1 is configured with a pair of directional antennas to generate a beam in one direction, covering the cell 1.
  • the base station 2 is configured with another pair of directional antennas to generate a beam in the other direction, covering the cell 2.
  • the embodiment of the present invention provides a carrier aggregation implementation method under multi-carrier, which is used to expand service capacity and improve carrier resource utilization by carrier aggregation. .
  • the technical solution of the present invention will be described in detail below with reference to specific embodiments.
  • FIG. 2a is a schematic flowchart of a method for implementing carrier aggregation under multi-carrier according to an embodiment of the present invention
  • FIG. 2b is a schematic structural diagram of a part of a cellular network structure according to an embodiment of the present invention
  • a carrier aggregation implementation method under multiple carriers may include:
  • the base station establishes a first cell and a second cell.
  • the embodiment of the present invention is to establish a first cell and a second cell by using a base station, which may be a cellular network structure as shown in FIG. 1a or a public network network structure shown in FIG. 1b, and corresponding to the cellular network shown in FIG. 1a.
  • the networking structure can be implemented by implementing the implementation of two cells in one base station in FIG. 1a.
  • the public network networking structure shown in FIG. 1b can be implemented by implementing the implementation of two cells in one base station in FIG. 1b.
  • the base station uses the "2" in the figure.
  • the triangle indicates that one directional antenna or two directional antennas (for example, two directional antennas are marked in Figure 2b), two beams are generated, one direction of the beam covers the first cell, and the other direction is beam coverage.
  • Second cell The first cell is configured with a first carrier (such as f1 in FIG. 2b), and the second cell is configured with a second carrier (such as f2 in FIG. 2b).
  • a first carrier such as f1 in FIG. 2b
  • the second cell is configured with a second carrier (such as f2 in FIG. 2b).
  • f1 in FIG. 2b the public network shown in FIG. 1b
  • one base station can generate two directions of beams through one directional antenna or two directional antennas, wherein one direction of the beam covers the cell 1 and the other direction of the beam. Covered by cell 2.
  • the cell 1 is the first cell in the embodiment of the present invention
  • the cell 2 is the second cell in the embodiment of
  • the common control signal of the first carrier is sent by the direction beam to cover the first cell.
  • the common control signal of the second carrier is sent by the direction beam to cover the second cell.
  • the first cell may be configured with the first power and/or the first tilt angle
  • the second cell is configured with the second power and/or the second tilt angle
  • the base station passes the directional antenna. Transmitting a common control signal corresponding to the first power and/or the first tilt angle to cover the first cell, and then sending a common control signal corresponding to the second power and/or the second tilt angle by using the directional antenna to cover the second cell, where Not limited.
  • the common control signal carried by the first carrier covers the first cell, and the terminal on the first cell can send and receive data through the control channel on the first carrier (it can be understood that the data channel and the control channel are carried on the carrier).
  • the data can be data information and control information.
  • data information and other user-specific signals can also be transmitted and received through the data channel on the first carrier.
  • the common control signal carried by the second carrier covers the second cell, and the terminal on the second cell can send and receive data through the control channel on the second carrier, and can also send and receive data information through the data channel on the second carrier. And other user-specific signals.
  • the first cell terminal does not receive the same-frequency interference from the control channel of the second carrier when transmitting and receiving data by using the control channel of the first carrier.
  • the second cell terminal when the data is transmitted and received by using the control channel of the second carrier, the same-frequency interference from the control channel of the first carrier is not received.
  • the common control signal carried by the first carrier is covered by the spatially directed beam, or the power and/or the tilt angle is configured
  • the common control signal carried by the second carrier covers the second cell, and can be minimized.
  • the overlapping coverage area of the small first cell and the second cell is used to reduce signal interference at the cell edge, but at the same time, the first cell and the second cell are allowed to have a certain overlapping coverage area, and the overlapping coverage area refers to the corresponding area of the first cell.
  • the common control signal coverage of the first carrier is also covered by the common control signal carried by the second carrier corresponding to the second cell, that is, the terminal in the overlapping coverage area can pass the first carrier corresponding to the first cell.
  • the data channel can transmit and receive data, and can also send and receive data through the data channel on the second carrier corresponding to the second cell.
  • the terminal in the overlapping coverage area may perform CQI measurement based on the first carrier corresponding to the first cell, perceive the channel quality of the first cell, and perform CQI measurement based on the second carrier corresponding to the second cell, The channel quality of the second cell is perceived to select a cell access with better channel quality, or to implement cell handover in an overlapping coverage area.
  • the base station transmits beams through 2 directional antennas, 1 directional antenna transmits beam 1, and another directional antenna transmits beam 2, beam 1 and beam 2.
  • the middle includes a main lobe beam, and a side lobe beam or a null beam.
  • the common control signal carried by the carrier f1 is transmitted by the main lobe beam of the beam 1.
  • the common control signal covers the first cell, and the common control signal carried by the sideband beam or the null beam transmitting carrier f2 (corresponding to the second cell) of the beam 2 covers a partial area of the first cell, and in this part, At the same time, it is covered by the common control signal carried by the carrier f1, and is also covered by the common control signal carried by the carrier f2, thereby forming an overlapping coverage area on the first cell.
  • the second cell corresponding carrier f2 in FIG.
  • the common control signal carried by the carrier f2 is transmitted by the main lobe beam of the beam 2, and the common control signal covers the second cell, and at the same time, the side of the beam 1
  • the common control signal carried by the carrier beam f1 (corresponding to the first cell) of the flap beam or the null beam beam covers a partial area of the second cell, and is covered by the common control signal carried by the carrier f2 at the same time, and is also covered by the common control signal Common control carried by carrier f1
  • the signal is covered such that an overlapping coverage area is formed on the second cell. Then, the overlapping coverage area of the first cell and the second cell provided in the embodiment of the present invention are combined by the overlapping coverage area on the first cell and the overlapping coverage area on the second cell.
  • the base station configures a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configures a second carrier corresponding to the second cell as a CA secondary carrier of the terminal, where the terminal is in the first a cell, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell, where the second carrier corresponding to the second cell is used to carry data information and dedicated to be sent by the terminal a reference signal, where the first carrier corresponding to the first cell is used to carry control information corresponding to the data information, or the second carrier corresponding to the second cell is used to carry data information, a dedicated reference signal, and the data that are required to be sent by the terminal. Control information corresponding to the information.
  • the base station corresponding to the first cell is configured as a CA primary carrier of the CA terminal
  • the second carrier corresponding to the second cell is configured as a CA secondary carrier of the CA terminal.
  • the area where the CA terminal is located is not covered by the common control signal carried by the second carrier corresponding to the second cell (the CA terminal is not in the overlapping coverage area described above), that is, the CA terminal cannot pass the corresponding corresponding to the second cell.
  • the control channel on the second carrier transmits and receives data, but can transmit and receive data through the data channel on the second carrier corresponding to the second cell, where the data includes control information and data information, and therefore, the second carrier corresponding to the second cell can be used.
  • the data information carrying the CA terminal and the dedicated reference signal (the data information and the dedicated reference signal are carried on the data channel of the second carrier) are utilized to fully utilize the second carrier corresponding to the second cell, thereby improving the utilization of the carrier resource.
  • the first carrier may be used to carry the control information corresponding to the data information of the first carrier, or the second carrier corresponding to the second cell may be used to carry the data information.
  • Corresponding control information (because the CA terminal is not covered by the common control signal carried by the second carrier corresponding to the second cell, where the control information is carried by the data channel on the second carrier corresponding to the second cell)
  • the control information can be correctly obtained, and the modulation and encoding of the data information is completed.
  • the data of the CA terminal is carried by the second carrier corresponding to the second cell, whether the first carrier corresponding to the first cell carries the corresponding control information or the data on the second carrier corresponding to the second cell
  • the channel carries the corresponding control letter If the control channel on the second carrier corresponding to the second cell is not used, the control information is sent to the terminal in the second cell through the control channel on the second carrier corresponding to the second cell. It will cause co-channel interference on the control channel between the first cell and the second cell.
  • the common control signal provided by the embodiment of the present invention is mainly used to provide a cell measurement reference signal, a broadcast message, and the like to a terminal to satisfy network access of the terminal and data transmission on the control channel.
  • the common control signal may include CRS, PBCH control information, SIB, and the like.
  • Control information is used for modulation and encoding of data information, such as MCS information.
  • the EPDCCH in the data channel on the second carrier may be specifically carried.
  • the control information corresponding to the data carried by the first carrier may be carried by the PDCCH on the control channel of the first carrier.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the user-specific measurement signal covers the first
  • the CA terminal can correctly parse the user-specific measurement signals to complete the corresponding measurements, thereby implementing the corresponding services.
  • the user-specific measurement signal herein may be a channel state indication reference signal (CSI-RS).
  • the overlapping coverage area of the first cell and the second cell can also be used to complete the time-frequency synchronization of the CA terminal on the second carrier in the embodiment of the present invention.
  • the CA terminal carries data information on the first carrier and carries data information on the second carrier.
  • Frequency synchronization in this case, synchronization may be implemented by using a common control signal carried by the second carrier corresponding to the second cell on the overlapping coverage area, such as CRS.
  • the second carrier corresponding to the second cell may be used by the CA terminal, and may also be used by the terminal in the second cell. Therefore, in the embodiment of the present invention, the base station may also be the second The second carrier of the cell is configured with an SDM scheduling policy. Then, in the SDM scheduling policy, the base station may schedule the second carrier corresponding to the second cell on different spatial resources, and carry the data information and the dedicated reference signal for the CA terminal, and The terminal in the two cells carries data information.
  • FIG. 3 is a schematic flowchart of a method for implementing carrier aggregation under multi-carrier according to another embodiment of the present invention.
  • a carrier aggregation implementation method for multiple carriers may include:
  • a first base station establishes a first cell
  • a second base station establishes a second cell
  • the first cell may be established by the first base station, and then the second cell is established by the second base station, where the situation occurs on the public network.
  • a public network networking structure as shown in FIG. 1b is obtained.
  • the first cell corresponds to the first carrier, and the second corresponds to the second carrier.
  • the first base station can transmit the beam 1 through a pair of directional antennas, and the beam 1 covers the first cell.
  • the second base station transmits the beam 2 through another pair of directional antennas, and the beam 2 covers the second cell.
  • step 201 The detailed introduction is not repeated here.
  • the first base station configures a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configures a second carrier corresponding to the second cell as a CA secondary carrier of the terminal, where the terminal is in the foregoing a cell, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell, where the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal.
  • a dedicated reference signal where the first carrier corresponding to the first cell is used to carry control information corresponding to the data information; or the second carrier corresponding to the second cell is used to carry data information, a dedicated reference signal, and Control information corresponding to the above data information.
  • the first cell and the second cell are established according to the method in the step 301, and then the CA terminal is configured in the same manner as the step 202, so as to achieve the purpose of improving the utilization of the carrier resource.
  • the CA terminal is configured in the same manner as the step 202, so as to achieve the purpose of improving the utilization of the carrier resource.
  • the first cell and the second cell provided by the embodiment of the present invention may be two adjacent cells, for example, two adjacent cells established by the same base station in a cellular network structure. It can be understood that the two adjacent cells in a corresponding base station of the cellular network structure are described in conjunction with FIG. 2b, and are covered by a common control signal that is in the first cell and is not carried by the second carrier corresponding to the second cell, and then The first cell is configured as a CA primary carrier of the terminal, and the second carrier corresponding to the second cell is configured as a CA secondary carrier of the terminal.
  • the base station may configure the second carrier corresponding to the second cell as the CA primary carrier of the terminal, and
  • the first carrier corresponding to the first cell is configured as the CA of the terminal.
  • Carrier That is, in the application scenario where the first cell and the second cell are neighboring cells, the CA terminal can be configured in the first cell and the second cell to implement carrier resource scheduling and improve carrier resource utilization.
  • FIG. 4a is a schematic diagram of application of cross-carrier bearer data information according to an embodiment of the present invention
  • FIG. 4b is a schematic diagram of cross-carrier scheduling according to an embodiment of the present invention.
  • the first cell corresponds to the carrier f1
  • the second cell corresponds to the carrier f2.
  • the base station configures f1 as the CA primary carrier of the terminal A, and configures f2 as the CA secondary carrier of the terminal A.
  • the base station configures f2 as the primary carrier of the terminal B, and configures f1 as the secondary carrier of the terminal B.
  • the data information can be carried by f2, thereby expanding the data coverage of f2, as shown in the ellipse area f2 in FIG. 4a.
  • the corresponding control information can be carried by the data information by f1, as shown in FIG. 4b.
  • Column (terminal A) is shown.
  • the data information can be carried by f1, thereby expanding the data coverage of f1, such as the ellipse area f1 in FIG. 4a.
  • the corresponding control information can be carried by the data information through f2, as shown in the right in FIG. 4b.
  • Column (terminal B) is shown.
  • the base station configures an SDM scheduling policy for f2, and in the second cell, the base station configures an SDM scheduling policy for f1. Therefore, terminal A and terminal B can use f1 on different spatial resources. Similarly, terminal A and terminal B can use f2 on different spatial resources to implement resource multiplexing.
  • the first cell and the second cell provided by the embodiment of the present invention may also be in an inclusion relationship, that is, the second cell is in the first cell, that is, the overlapping coverage area of the first cell and the second cell is equal to the second cell.
  • the public network shown in Figure 1b the public network shown in Figure 1b. It can be understood that, in this application scenario, the area where all the terminals in the second cell are located is covered by the common control signal carried by the first carrier corresponding to the first cell, and therefore, only the terminal in the first cell can be performed.
  • CA configuration is possible to be performed.
  • FIG. 5 is a schematic diagram of application of a method for implementing carrier aggregation under multi-carrier according to an embodiment of the present invention.
  • the public network combination shown in FIG. 1b is provided in the embodiment of the present invention.
  • the private network is used.
  • the private network refers to a dedicated network, such as a railway system private network, a public security system private network, a flood prevention private network, a military private network, etc.
  • the private network is only a system internal network, and only serves the system.
  • the railway system private network is specifically taken as an example for description.
  • the base station establishes a first cell and a second cell, where the first cell corresponds to f1, the second cell corresponds to f2, and the CA terminal in the first cell. It also completes configuring f1 as its primary carrier and f2 as its secondary carrier.
  • the base station where the private network of the railway system is located also establishes a third cell, and the third cell corresponds to f2, and the second cell and the third cell have no overlapping coverage area, and the f2 corresponding to the second cell is the second cell terminal bearer data.
  • the f2 corresponding to the third cell is the bearer data of the third cell terminal, and does not cause interference between the second cell and the third cell (including interference on the data channel and the control channel).
  • the area where the CA terminal is located is not covered by the common control signal of the f2 bearer corresponding to the second cell, and the area where the CA terminal is located is not overlapped by the first cell and the third cell. The area, then, when the f2 corresponding to the second cell is the bearer data information and the dedicated reference signal, the f2 corresponding to the third cell can be the terminal bearer data of the third cell, so that the CA terminal uses the second cell.
  • the first base station may call the f2 corresponding to the second cell to carry data for the CA terminal in the overlapping coverage area of the first cell and the third cell, specifically, The CA terminal on the overlapping coverage area of the first cell and the third cell uses the f2 corresponding to the second cell, and the f2 corresponding to the terminal on the third cell uses the time division multiplexing mode, that is, the high-speed rail pass
  • the base station in the public network can be used by the CA terminal on the overlapping coverage area of the first cell and the third cell by using f2 corresponding to the second cell.
  • FIG. 6 is a schematic structural diagram of a base station according to some embodiments of the present disclosure.
  • a base station 600 may include:
  • the establishing module 610 is configured to establish a first cell and a second cell
  • the configuration module 620 is configured to configure a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configure a second carrier corresponding to the second cell as a CA secondary carrier of the terminal, where the terminal is in the foregoing a first cell, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry the control information corresponding to the data information; or
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the foregoing establishing module 610 may be specifically configured to: send, by using an antenna, a first beam and a second beam, where the first beam is used to send the first carrier corresponding to the first cell.
  • a common control signal of the bearer the common control signal carried by the first carrier corresponding to the first cell is overlaid to form the first cell
  • the second beam is used to send a common control signal carried by the second carrier corresponding to the second cell
  • the common control signal carried by the second carrier corresponding to the second cell covers the second cell.
  • the foregoing base station 600 further includes a scheduling module 630, where the scheduling module 630 is configured to schedule a second carrier corresponding to the second cell in different spaces, and use the second cell.
  • the corresponding second carrier is the terminal bearer data information and the dedicated reference signal, and the terminal bearer data information covered by the second carrier corresponding to the second cell.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the common control signal includes a common reference signal CRS, physical broadcast channel PBCH control information, and system broadcast information SIB.
  • the third cell configures a second carrier, where the second cell has an overlapping coverage area with the first cell.
  • the second cell and the third cell have no overlapping coverage area, and the area where the terminal is located is not in the overlapping coverage area of the first cell and the second cell, and is not in the overlapping coverage area of the first cell and the third cell.
  • the scheduling module 630 is further configured to schedule the second carrier corresponding to the second cell, when the other base station does not schedule the second carrier corresponding to the third cell.
  • the first cell and the second cell are established by the establishing module 610 in the base station 600, and the configuration module 620 configures the first carrier corresponding to the first cell as the terminal (in the embodiment of the present invention) Carrier aggregation CA primary carrier, which is described by the CA terminal, and the second
  • the second carrier corresponding to the cell is configured as a CA secondary carrier of the terminal, and the terminal is in the first cell, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry control information corresponding to the data information; or the second cell
  • the corresponding second carrier is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the CA terminal cannot transmit and receive data through the control channel on the second carrier corresponding to the second cell, but can transmit and receive data through the data channel on the second carrier corresponding to the second cell, where the data includes control information.
  • the second carrier corresponding to the second cell carries the data information of the CA terminal and the dedicated reference signal (the data information and the dedicated reference signal are carried on the data channel of the second carrier) to fully utilize the second
  • the second carrier corresponding to the cell improves the utilization of the carrier resource.
  • the first carrier may be used to carry the control information corresponding to the data information of the first carrier, or the second carrier corresponding to the second cell may be used to carry the data information.
  • Corresponding control information (because the CA terminal is not covered by the common control signal carried by the second carrier corresponding to the second cell, where the control information is carried by the data channel on the second carrier corresponding to the second cell)
  • the control information can be correctly obtained, and the modulation and encoding of the data information is completed.
  • the data of the CA terminal is carried by the second carrier corresponding to the second cell, whether the first carrier corresponding to the first cell carries the corresponding control information or the data on the second carrier corresponding to the second cell
  • the channel carries the corresponding control information, and the control channel on the second carrier corresponding to the second cell is not used. Then, even at this time, the control channel on the second carrier corresponding to the second cell is used in the second cell.
  • the terminal sends control information, and does not cause co-channel interference on the control channel between the first cell and the second cell.
  • FIG. 7 is a schematic structural diagram of a base station according to another embodiment of the present invention. As shown in FIG. 7, a base station 700 may include:
  • the configuration module 720 is configured to configure the first carrier corresponding to the first cell to be a carrier of the terminal a CA primary carrier, and a second carrier corresponding to the second cell is configured as a CA secondary carrier of the terminal, the second cell is established by the second base station, the terminal is in the first cell, and the area where the terminal is located is not
  • the common control signal carried by the second carrier corresponding to the second cell is covered by the common control signal;
  • the second carrier corresponding to the second cell is used to carry the data information that needs to be sent by the terminal, and the dedicated reference signal, where the first carrier corresponding to the first cell is used to carry the control information corresponding to the data information; or
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the foregoing establishing module 710 is specifically configured to: send, by using an antenna, a first beam, where the first beam is used to send a common control signal carried by the first carrier corresponding to the first cell. And the common control signal carried by the first carrier corresponding to the first cell covers the first cell.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the common control signal includes a common reference signal CRS, physical broadcast channel PBCH control information, and system broadcast information SIB.
  • the foregoing base station 700 further includes: a scheduling module 730, configured to schedule a second carrier corresponding to the second cell in different spaces, and use a second corresponding to the second cell
  • the carrier is the terminal bearer data information and the dedicated reference signal, and the terminal bearer data information covered by the second carrier corresponding to the second cell.
  • the third cell configures the second carrier, where the second cell and the first cell have overlapping coverage areas, and the second The cell and the third cell have no overlapping coverage area, and the area where the terminal is located is not in the overlapping coverage area of the first cell and the second cell, and is not in the overlapping coverage area of the first cell and the third cell, in the foregoing
  • the scheduling module 730 is further configured to schedule the second carrier corresponding to the second cell.
  • FIG. 8 is another schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 800 may include at least one processor 801 (for example, a CPU, Central Processing Unit), at least one network interface or other communication interface.
  • the memory 802, the receiver 803, the transmitter 804 and at least one communication bus are used to implement connection communication between these devices.
  • the processor 801 is configured to execute executable modules, such as computer program instructions, stored in the memory 802.
  • the memory 802 may include a high speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk memory.
  • the communication connection between the system gateway and at least one other network element is implemented by at least one network interface (which may be wired or wireless), and an Internet, a wide area network, a local network, a metropolitan area network, etc. may be used.
  • the memory 802 stores program instructions, which may be executed by the processor 801, and the processor 801 specifically performs the steps of: establishing a first cell and a second cell, Configuring a first carrier corresponding to the first cell as a carrier aggregation CA primary carrier of the terminal, and configuring a second carrier corresponding to the second cell as a CA secondary carrier of the terminal, where the terminal is in the foregoing a cell, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, and a dedicated reference signal, where the first carrier corresponding to the first cell is used to carry control information corresponding to the data information; Or the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the processor 801 may further perform the following steps: transmitting, by using an antenna, a first beam and a second beam, where the first beam is used to send a common control of a first carrier bearer corresponding to the first cell a signal, the common control signal carried by the first carrier corresponding to the first cell is used to form the first cell, and the second beam is used to send a common control signal carried by the second carrier corresponding to the second cell.
  • the common control signal carried by the second carrier corresponding to the second cell covers the second cell.
  • the processor 801 may further perform: scheduling a second carrier corresponding to the second cell in different spaces, and using the second carrier corresponding to the second cell to carry data for the terminal The information and the dedicated reference signal, and the terminal covered by the second carrier corresponding to the second cell, carry data information.
  • the third cell configures a second carrier
  • the second cell has an overlapping coverage area with the first cell, where the The second cell and the third cell have no overlapping coverage area, and the area where the terminal is located is not in the overlapping coverage area of the first cell and the second cell, and is not in the overlap of the first cell and the third cell.
  • the processor 801 may further perform the step of scheduling the second carrier corresponding to the second cell.
  • FIG. 9 is another schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 900 may include at least one processor 901 (eg, a CPU), at least one network interface or other communication interface, and a memory 902. Receiver 903, transmitter 904 and at least one communication bus are used to effect connection communication between these devices.
  • the processor 901 is configured to execute executable modules, such as computer program instructions, stored in the memory 902.
  • the memory 802 may include high speed random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage.
  • the communication connection between the system gateway and at least one other network element is implemented by at least one network interface (which may be wired or wireless), and an Internet, a wide area network, a local network, a metropolitan area network, etc. may be used.
  • the memory 902 stores program instructions, and the program instructions may be executed by the processor 901.
  • the processor 901 specifically performs the following steps: establishing a first cell, where the first The first carrier corresponding to a cell is configured as a carrier aggregation CA primary carrier of the terminal, and the second carrier corresponding to the second cell is configured as a CA secondary carrier of the terminal, where the second cell is established by the second base station, The terminal is in the first cell, and the area where the terminal is located is not covered by a common control signal carried by the second carrier corresponding to the second cell;
  • the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, and a dedicated reference signal, where the first carrier corresponding to the first cell is used to carry control information corresponding to the data information; Or the second carrier corresponding to the second cell is used to carry data information that needs to be sent by the terminal, a dedicated reference signal, and control information corresponding to the data information.
  • the processor 901 can also perform the following steps: transmitting through an antenna a first beam, where the first beam is used to send a common control signal carried by the first carrier corresponding to the first cell, and a common control signal carried by the first carrier corresponding to the first cell is used to form the first cell. .
  • the processor 901 may further perform the following steps: scheduling a second carrier corresponding to the second cell on a different space, and using the second carrier corresponding to the second cell to carry data for the terminal The information and the dedicated reference signal, and the terminal covered by the second carrier corresponding to the second cell, carry data information.
  • the third base station if the third base station establishes a third cell, the third cell configures a second carrier, the second cell has an overlapping coverage area with the first cell, the second cell, and the The third cell has no overlapping coverage area, and the area where the terminal is located is not in the overlapping coverage area of the first cell and the second cell, and is not in the overlapping coverage area of the first cell and the third cell.
  • the processor 901 may further perform the following steps: scheduling the second carrier corresponding to the second cell.
  • the second carrier corresponding to the second cell is further configured to send a user-specific measurement signal, where the user-specific measurement signal covers at least the first cell.
  • the common control signal includes a common reference signal CRS, physical broadcast channel PBCH control information, and system broadcast information SIB.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or Some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

一种多载波下的载波聚合实现方法及基站,用于提高载波资源的利用率,提高业务容量。本发明实施例方法包括:基站建立第一小区和第二小区;基站将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为终端的CA辅载波,所述终端处于所述第一小区,且所述终端所处区域不被第二小区对应的第二载波承载的公共控制信号所覆盖;其中,第二小区对应的第二载波用于承载终端需要发送的数据信息和专用参考信号,第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,第二小区对应的第二载波用于承载终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。

Description

一种多载波下的载波聚合实现方法及基站
本申请要求于2015年12月25日提交中国专利局、申请号为201510992952.0、发明名称为“一种多载波下的载波聚合实现方法及基站”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域,具体涉及一种多载波下的载波聚合实现方法及基站。
背景技术
随着智能终端的普及,以及智能终端中各种业务的推广,导致终端对网络流量的需求也极速增长。其中,提高网络覆盖是解决网络流量的手段之一,而多载波异频策略则是有效提升覆盖和控制信道性能的技术手段。
常见的异频六扇区组网结构就是基于多载波异频策略的组网模式。所谓异频六扇区是指在一个基站下建立六个扇区,相邻的两个扇区的频点错开,每一个扇区只能利用一个频率对应的资源,而不能利用相邻的扇区的频率资源。而一个扇区的面积相对比较小,资源覆盖能力比较强,但是一个频率对应的资源只能在小面积中利用,导致载频资源利用率不高。
发明内容
针对上述缺陷,本发明实施例提供了一种多载波下的载波聚合实现方法及基站,用于解决现有技术中载波资源利用率较低的问题,提高载波资源利用率。
本发明第一方面提供了一种多载波下的载波聚合实现方法,可包括:
基站建立第一小区和第二小区;
上述基站将上述第一小区对应的第一载波配置为终端的载波聚合(Carrier Aggregation,简称CA)主载波,以及将上述第二小区对应的第二载波配置为上述终端的CA辅载波,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,
上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及该数据信息对应的控制信息。
从以上技术方案可以看出,本发明实施例由同一个基站建立第一小区和第二小区,对处于第一小区且不被第二小区对应的第二载波承载的公共控制信号所覆盖的终端(在后续内容中以CA终端来描述该终端),基站将第一小区对应的第一载波配置为该CA终端的CA主载波,然后将第二小区对应的第二载波配置为该CA终端的CA辅载波。由于该CA终端所处区域不被第二小区对应的第二载波承载的公共控制信号所覆盖,也就是说CA终端不能通过第二小区对应的第二载波上的控制信道收发数据,但是能通过第二小区对应的第二载波上的数据信道收发数据,这里的数据包括控制信息和数据信息,因此,可以通过第二小区对应的第二载波承载CA终端的数据信息和专用参考信号(数据信息和专用参考信号是在第二载波的数据信道上承载),以充分利用第二小区对应的第二载波,提高载波资源利用率。而在通过第二小区对应的第二载波承载CA终端的数据信息时,可以通过第一小区对应的第一载波承载数据信息对应的控制信息,或者通过第二小区对应的第二载波承载数据信息对应的控制信息(由于该CA终端不被第二小区对应的第二载波承载的公共控制信号覆盖,此处是指通过第二小区对应的第二载波上的数据信道承载该控制信息),从而可以正确获取到控制信息,完成对数据信息的调制和编码。最后,在通过第二小区对应的第二载波承载CA终端的数据信息时,不管是通过第一小区对应的第一载波承载相应的控制信息,还是通过第二小区对应的第二载波上的数据信道承载相应的控制信息,都没有使用到第二小区对应的第二载波上的控制信道,那么,即使这个时候还通过第二小区对应的第二载波上的控制信道来为第二小区内的终端发送控制信息,也不会造成第一小区和第二小区之间控制信道上的同频干扰。
其中,本发明一些实施例中提供的公共控制信号用于向终端提供小区测量参考信号、广播消息等,以满足终端的网络接入和在控制信道上的数据传输。该公共控制信号可以包括公共参考信号(Common Reference Signal,简称CRS)、物理广播信道(Physical Dedicated Chanel,简称PBCH)控制信息和系统广播信息(System Information Brocast,简称SIB)等。
其中,本发明一些实施例提供的控制信息用于数据信息的调制和编码,比如调制与编码策略(Modulation and Coding Scheme,简称MCS)信息。
可选地,在通过第二小区对应的第二载波上的数据信道承载上述数据信息的控制信息时,具体可以用第二载波上的数据信道中的增强下行物理控制信道(Enhanced Physical Downlink Control Channel,简称EPDCCH)来承载。而通过第一载波承载数据信息对应的控制信息,具体可以是用第一载波的控制信道上的物理下行控制信道(Physical Downlink Control Channel,简称PDCCH)承载。
在本发明一些实施例中,上述基站建立第一小区和第二小区具体通过下面方式实现:基站通过天线发射第一波束和第二波束,第一波束用于发送第一小区对应的第一载波承载的公共控制信号,然后由第一小区对应的第一载波承载的公共控制信号覆盖形成第一小区;第二波束用于发送第二小区对应的第二载波承载的公共控制信号,然后由第二小区对应的第二载波承载的公共控制信号覆盖形成第二小区。可以看出,在本发明实施例中,基站可以通过天线发射两束波束,两束波束的空间定向不同,每一束波束对应一个方向,一个方向的波束覆盖一个小区,那么该波束发送的载波所承载的公共控制信号也将覆盖对应小区。也就是通过在对天线的空间定向上,尽可能地减少第一小区和第二小区的重叠覆盖区域(所谓重叠覆盖区域是指被第一小区对应的第一载波承载的公共控制信号覆盖,也被第二小区对应的第二载波承载的公共控制信号覆盖),以降低小区边缘的信号干扰。而减少第一小区和第二小区的重叠覆盖区域,还说明第一小区中更多区域不被第二小区对应的第二载波承载的公共控制信号所覆盖,那么在第一小区中就会有更多的终端满足配置成上述CA终端的要求,从而通过第二小区对应的第二载波为这部分区域下的终端承载数据信息,从而扩大了第二小区的数据覆盖范围,提升了信道容量。
需要说明,基站可以通过一副天线发射第一波束和第二波束,也可以通过一副天线发射第一波束,然后再通过另一副天线发射第二波束。当然,这里的一副天线可以由一根或者多根天线组成。
在本发明另一些实施例中,上述基站建立第一小区和第二小区还可以通过下面方式实现:基站设置第一功率和/或第一倾角,基站还设置第二功率和/或 第二倾角。基站通过天线发射第一功率和/或第一倾角对应的公共控制信号,通过公共控制信号形成第一小区。基站通过天线发射第二功率和/或第二倾角对应的公共控制信号,通过该公共控制信号形成第二小区。由于通过控制功率和/或倾角,减小第一小区和第二小区的重叠覆盖区域,达到减小小区之间干扰,提升信道容量的目的。
需要说明,从上述基站建立第一小区和第二小区的两种实现方式中可以看出,只是尽可能地减小第一小区和第二小区之间的重叠覆盖区域,但是实际上第一小区和第二小区之间仍然具有重叠覆盖区域,在同时采用第一小区对应的第一载波和第二小区对应的第二载波为该CA终端承载数据信息时,还需要利用重叠覆盖区域上的第二小区对应的第二载波承载的公共控制信号,比如CRS,完成CA终端在第二载波上的时频同步。另外,该重叠覆盖区域还有利于第一小区和第二小区之间的切换,比如,当上述CA终端移动到重叠覆盖区域(第一小区边缘区域,该边缘区域与第二小区相接)时,通过检测第二载波所承载的公共控制信号进行信道质量索引(Channel Quality Index,简称CQI)测量,从而感知第二小区的信道质量,以确定是否需要进行小区切换。
可选地,第一小区和第二小区可以是相邻的两个小区,比如六扇区中的相邻两个扇区可以看作本发明实施例中的第一小区和第二小区。第一小区和第二小区还可以是包含关系,即第二小区处于第一小区之中,也就是第一小区和第二小区的重叠覆盖区域等于第二小区。
在本发明一些实施例中,基站可以对第二小区对应的第二载波配置空分复用(Space Division Multiplexing,简称SDM)调度策略,那么基于该SDM调度策略,基站可以在不同的空间上调度第二小区对应的第二载波,为上述CA终端承载数据信息和专用参考信号和为第二小区中的终端承载数据信息。
在本发明一些实施例中,第二小区对应的第二载波还用于发送用户专用测量信号,该用户专用测量信号至少覆盖第一小区。那么在该情景下,若第二小区对应的第二载波用于承载上述CA终端发送的数据信息,同时通过第二小区对应的第二载波发送用户专用测量信号,由于用户专用测量信号覆盖了第一小区,那么该CA终端就能正确解析用户专用测量信号,以完成相应测量,从而实现相应业务。
在本发明一些实施例提供的第一小区和第二小区的应用情景中,还可能存在其它基站建立第三小区,其中,第三小区对应的也是第二载波,第二小区和第三小区没有重叠覆盖区域,那么在第二小区对应的第二载波为第二小区终端承载数据,同时第三小区对应的第二载波为第三小区终端承载数据,也不会造成第二小区和第三小区之间的干扰(包括了数据信道和控制信道上的干扰)。进一步地,在这种情景下,上述CA终端所处区域除了不被第二小区对应的第二载波承载的公共控制信号所覆盖,上述CA终端所处区域还不在第一小区和第三小区的重叠覆盖区域,那么,在通过第二小区对应的第二载波为上述CA终端承载数据信息和专用参考信号时,同时可以通过第三小区对应的第二载波为第三小区的终端承载数据,使得CA终端利用第二小区的第二载波和第三小区终端利用第三小区对应的第二载波时,也不会造成信号干扰。而在其它基站没有使用第三小区对应的第二载波时,那么第一基站可以调用第二小区对应的第二载波,为处于第一小区和第三小区的重叠覆盖区域的CA终端承载数据信息,具体来说,第一小区和第三小区的重叠覆盖区域上的CA终端使用第二小区对应的第二载波,和第三小区上的终端使用第三小区对应的第二载波是基于时分复用模式。
本发明第二方面提供了一种多载波下的载波聚合实现方法,可包括:
第一基站建立第一小区;
上述第一基站将上述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为上述终端的CA辅载波,上述第二小区由第二基站建立,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,
上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。
可以看出,第二方面与第一方面提供的多载波下的载波聚合实现方法相比,第二方面中第一基站只建立了第一小区,而第二小区由第二基站建立。第 一小区对应第一载波,第二小区对应第二载波,实现两个小区之间的公共控制信道异频,从而降低两个小区的公共控制信道之间的干扰。而对处于第一小区且不被第二小区对应的第二载波承载的公共控制信号所覆盖的终端(在后续内容中以CA终端来描述该终端),基站将第一小区对应的第一载波配置为该CA终端的CA主载波,然后将第二小区对应的第二载波配置为该CA终端的CA辅载波。由于该CA终端所处区域不被第二小区对应的第二载波承载的公共控制信号所覆盖,也就是说CA终端不能通过第二小区对应的第二载波上的控制信道收发数据,但是能通过第二小区对应的第二载波上的数据信道收发数据,这里的数据包括控制信息和数据信息,因此,可以通过第二小区对应的第二载波承载CA终端的数据信息和专用参考信号(数据信息和专用参考信号是在第二载波的数据信道上承载),以充分利用第二小区对应的第二载波,提高载波资源利用率。而在通过第二小区对应的第二载波承载CA终端的数据信息时,可以通过第一小区对应的第一载波承载数据信息对应的控制信息,或者通过第二小区对应的第二载波承载数据信息对应的控制信息(由于该CA终端不被第二小区对应的第二载波承载的公共控制信号覆盖,此处是指通过第二小区对应的第二载波上的数据信道承载该控制信息),从而可以正确获取到控制信息,完成对数据信息的调制和编码。最后,在通过第二小区对应的第二载波承载CA终端的数据信息时,不管是通过第一小区对应的第一载波承载相应的控制信息,还是通过第二小区对应的第二载波上的数据信道承载相应的控制信息,都没有使用到第二小区对应的第二载波上的控制信道,那么,即使同时通过第二小区对应的第二载波上的控制信道来为第二小区内的终端发送控制信息,也不会造成第一小区和第二小区之间控制信道上的同频干扰。
其中,本发明一些实施例中提供的公共控制信号用于向终端提供小区测量参考信号、广播消息等,以满足终端的网络接入和在控制信道上的数据传输。该公共控制信号可以包括CRS、PBCH和SIB等。
其中,本发明一些实施例提供的控制信息用于数据信息的调制和编码,比如MCS信息等。
可选地,在通过第二小区对应的第二载波上的数据信道承载上述数据信息的控制信息时,具体可以用第二载波上的数据信道的EPDCCH来承载。而通 过第一载波承载数据信息对应的控制信息时,具体可以是用第一载波的控制信道上的PDCCH承载。
在本发明一些实施例中,上述第一基站建立第一小区具体通过下面方式实现:第一基站通过一副天线发射第一波束,第一波束用于发送第一小区对应的第一载波承载的公共控制信号,然后由第一小区对应的第一载波承载的公共控制信号覆盖形成第一小区。其中,第一基站可以通过对第一波束进行空间定向,使得第一波束对应一个方向,然后在该方向上覆盖形成第一小区。
在本发明一些实施例中,第二小区由第二基站建立,具体是第二基站通过一副天线发射第二波束,第二波束用于发送第二小区对应的第二载波承载的公共控制信号,然后由第二小区对应的第二载波承载的公共控制信号覆盖形成第二小区。其中,第二基站通过对第二波束进行空间定向,使得第二波束对应另外一个方向,然后在该方向上覆盖形成第二小区。
需要说明,第一基站在对第一波束进行空间定向,以及第二基站在对第二波束进行空间定向时,确保第一波束和第二波束在空间上对应着不同的方法,以减少第一小区和第二小区的重叠覆盖区域。
在本发明另一些实施例中,上述第一基站建立第一小区还可以通过下面方式实现:第一基站设置第一功率和/或第一倾角基站通过一副天线发射第一功率和/或第一倾角对应的公共控制信号,通过公共控制信号形成第一小区。
在本发明一些实施例中,第二小区由第二基站建立是指,第二基站设置第二功率和/或第二倾角,第二基站通过一副天线发射第二功率和/或第二倾角对应的公共控制信号,通过该公共控制信号形成第二小区。
其中,第一基站通过控制功率和/或倾角,同时第二基站也通过控制功率和倾角,减小第一小区和第二小区的重叠覆盖区域,达到减小小区之间干扰,提升信道容量的目的。
可选地,第一基站所使用的一副天线与第二基站所使用的一副天线为不同的两副天线,每一副天线可以由一根或者多根天线组成。
需要说明,从上述第一基站建立第一小区和第二小区的两种实现方式中可以看出,只是尽可能地减小第一小区和第二小区之间的重叠覆盖区域,但是实际上第一小区和第二小区之间仍然具有重叠覆盖区域,在同时采用第一小区对 应的第一载波和第二小区对应的第二载波为该CA终端承载数据信息时,还需要利用重叠覆盖区域上的第二小区对应的第二载波承载的公共控制信号,比如CRS,完成CA终端在第二载波上的时频同步。另外,该重叠覆盖区域还有利于第一小区和第二小区之间的切换,比如,当上述CA终端移动到重叠覆盖区域(第一小区边缘区域,该边缘区域与第二小区相接)时,通过检测第二载波所承载的公共控制信号进行信道质量索引(Channel Quality Index,简称CQI)测量,从而感知第二小区的信道质量,以确定是否需要进行小区切换。
可选地,第一小区和第二小区可以是相邻的两个小区,比如六扇区中的相邻两个扇区可以看作本发明实施例中的第一小区和第二小区。第一小区和第二小区还可以是包含关系,即第二小区处于第一小区之中,也就是第一小区和第二小区的重叠覆盖区域等于第二小区。
在本发明一些实施例中,第一基站可以对第二小区对应的第二载波配置SDM调度策略,那么基于该SDM调度策略,在不同的空间上,第一基站可以调度第二小区对应的第二载波,为上述CA终端承载数据信息和专用参考信号是,第二基站可以调度第二小区对应的第二载波为第二小区的终端承载数据信息和控制信息。
在本发明一些实施例中,第二小区对应的第二载波还用于发送用户专用测量信号,该用户专用测量信号至少覆盖第一小区。那么在该情景下,若第二小区对应的第二载波用于承载上述CA终端发送的数据信息,同时通过第二小区对应的第二载波发送用户专用测量信号,由于用户专用测量信号覆盖了第一小区,那么该CA终端就能正确解析用户专用测量信号,以完成相应测量,从而实现相应业务。
在本发明一些实施例提供的第一小区和第二小区的应用情景中,还可能存在第三基站建立第三小区,其中,第三小区对应的也是第二载波,第二小区和第三小区没有重叠覆盖区域,那么在第二小区对应的第二载波为第二小区终端承载数据,同时第三小区对应的第二载波为第三小区终端承载数据,也不会造成第二小区和第三小区之间的干扰(包括了数据信道和控制信道上的干扰)。进一步地,在这种情景下,上述CA终端所处区域除了不被第二小区对应的第二载波承载的公共控制信号所覆盖,上述CA终端所处区域还不在第一小区和 第三小区的重叠覆盖区域,那么,在通过第二小区对应的第二载波为上述CA终端承载数据信息和专用参考信号时,同时可以通过第三小区对应的第二载波为第三小区的终端承载数据,使得CA终端利用第二小区的第二载波和第三小区终端利用第三小区对应的第二载波时,也不会造成信号干扰。而在第三基站没有使用第三小区对应的第二载波时,那么第一基站可以调用第二小区对应的第二载波,为处于第一小区和第三小区的重叠覆盖区域的CA终端承载数据,具体来说,第一小区和第三小区的重叠覆盖区域上的CA终端使用第二小区对应的第二载波,和第三小区上的终端使用第三小区对应的第二载波是基于时分复用模式。
本发明第三方面提供了一种基站,可包括:
建立模块,用于建立第一小区和第二小区;
配置模块,用于将上述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将上述第二小区对应的第二载波配置为上述终端的CA辅载波,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,
上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。
可以看出,本发明实施例中通过建立模块建立第一小区和第二小区,然后由配置模块将第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将上述第二小区对应的第二载波配置为上述终端的CA辅载波,从在该终端处于第一小区,且不被上述第二小区对应的第二载波承载的公共控制信号所覆盖时,能够通过第二小区对应的第二载波承载数据信息和专用参考信号,以提高资源利用率,提高业务信道容量。
在本发明一些实施例中,上述建立模块具体用于,通过天线发射第一波束和第二波束,上述第一波束用于发送上述第一小区对应的第一载波承载的公共控制信号,上述第一小区对应的第一载波承载的公共控制信号覆盖形成上述第 一小区;上述第二波束用于发送上述第二小区对应的第二载波承载的公共控制信号,上述第二小区对应的第二载波承载的公共控制信号覆盖形成上述第二小区。
在本发明一些实施例中,上述基站还包括:调度模块,用于在不同空间上调度上述第二小区对应的第二载波,利用上述第二小区对应的第二载波为上述终端承载数据信息和专用参考信号,以及利用上述第二小区对应的第二载波为其覆盖的终端承载数据信息。
可选地,上述第二小区对应的第二载波还用于发送用户专用测量信号,上述用户专用测量信号至少覆盖上述第一小区。
可选地,上述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
在本发明一些实施例中,若存在上述基站之外的其它基站建立第三小区,上述第三小区配置第二载波,上述第二小区与上述第一小区具有重叠覆盖区域,上述第二小区和上述第三小区没有重叠覆盖区域,上述终端所处区域不处于上述第一小区与第二小区的重叠覆盖区域且不处于上述第一小区与上述第三小区的重叠覆盖区域,在上述其它基站不调度上述第三小区对应的第二载波时,上述调度模块还用于调度上述第二小区对应的第二载波。
本发明第四方面提供了一种基站,可包括:
建立模块,用于建立第一小区;
配置模块,用于将上述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为上述终端的CA辅载波,上述第二小区由第二基站建立,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,
上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。
可以看出,本发明实施例中通过建立模块建立第一小区,并结合第二基站 建立的第二小区,由配置模块将第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将上述第二小区对应的第二载波配置为上述终端的CA辅载波,从在该终端处于第一小区,且不被上述第二小区对应的第二载波承载的公共控制信号所覆盖时,能够通过第二小区对应的第二载波承载数据信息和专用参考信号,以提高资源利用率,提高业务信道容量。
在本发明一些实施例中,上述建立模块具体用于,通过天线发射第一波束,上述第一波束用于发送上述第一小区对应的第一载波承载的公共控制信号,上述第一小区对应的第一载波承载的公共控制信号覆盖形成上述第一小区。
可选地,上述第二小区对应的第二载波还用于发送用户专用测量信号,上述用户专用测量信号至少覆盖上述第一小区。
可选地,上述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
在本发明一些实施例中,上述基站还包括:调度模块,用于在不同空间上调度上述第二小区对应的第二载波,利用上述第二小区对应的第二载波为上述终端承载数据信息和专用参考信号,以及利用上述第二小区对应的第二载波为其覆盖的终端承载数据信息。
在本发明一些实施例中,若存在第三基站建立第三小区,上述第三小区配置第二载波,上述第二小区与上述第一小区具有重叠覆盖区域,上述第二小区和上述第三小区没有重叠覆盖区域,上述终端所处区域不处于上述第一小区与第二小区的重叠覆盖区域且不处于上述第一小区与上述第三小区的重叠覆盖区域,在上述第三基站不调度上述第三小区对应的第二载波时,上述调度模块还用于调度上述第二小区对应的第二载波。
本发明第五方面提供了一种基站,可包括:
通过总线连接的接收器、发送器、存储器和处理器;
其中,上述存储器用于存储程序指令;
上述处理器用于,执行存储在上述存储器中的程序指令;
上述处理器还用于,建立第一小区和第二小区,将上述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将上述第二小区对应的第二载波配置为上述终端的CA辅载波,上述终端处于上述第一小区,且上述终端所 处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,
上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。
在本发明一些实施例中,上述处理器具体用于,通过天线发射第一波束和第二波束,上述第一波束用于发送上述第一小区对应的第一载波承载的公共控制信号,上述第一小区对应的第一载波承载的公共控制信号覆盖形成上述第一小区;上述第二波束用于发送上述第二小区对应的第二载波承载的公共控制信号,上述第二小区对应的第二载波承载的公共控制信号覆盖形成上述第二小区。
在本发明一些实施例中,上述处理器还用于,在不同空间上调度上述第二小区对应的第二载波,利用上述第二小区对应的第二载波为上述终端承载数据信息和专用参考信号,以及利用上述第二小区对应的第二载波为其覆盖的终端承载数据信息。
可选地,上述第二小区对应的第二载波还用于发送用户专用测量信号,上述用户专用测量信号至少覆盖上述第一小区。
可选地,上述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
在本发明一些实施例中,若存在上述基站之外的其它基站建立第三小区,上述第三小区配置第二载波,上述第二小区与上述第一小区具有重叠覆盖区域,上述第二小区和上述第三小区没有重叠覆盖区域,上述终端所处区域不处于上述第一小区与第二小区的重叠覆盖区域且不处于上述第一小区与上述第三小区的重叠覆盖区域,在上述其它基站不调度上述第三小区对应的第二载波时,上述处理器还用于调度上述第二小区对应的第二载波。
本发明第六方面提供了一种基站,可包括:
通过总线连接的接收器、发送器、存储器和处理器;
其中,上述存储器用于存储程序指令;
上述处理器用于,执行存储在上述存储器中的程序指令;
上述处理器还用于,建立第一小区,将上述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为上述终端的CA辅载波,上述第二小区由第二基站建立,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,
上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。
在本发明一些实施例中,上述处理器具体用于,通过天线发射第一波束,上述第一波束用于发送上述第一小区对应的第一载波承载的公共控制信号,上述第一小区对应的第一载波承载的公共控制信号覆盖形成上述第一小区。
可选地,上述第二小区对应的第二载波还用于发送用户专用测量信号,上述用户专用测量信号至少覆盖上述第一小区。
可选地,上述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
在本发明一些实施例中,上述处理器还用于,在不同空间上调度上述第二小区对应的第二载波,利用上述第二小区对应的第二载波为上述终端承载数据信息和专用参考信号,以及利用上述第二小区对应的第二载波为其覆盖的终端承载数据信息。
在本发明一些实施例中,若存在第三基站建立第三小区,上述第三小区配置第二载波,上述第二小区与上述第一小区具有重叠覆盖区域,上述第二小区和上述第三小区没有重叠覆盖区域,上述终端所处区域不处于上述第一小区与第二小区的重叠覆盖区域且不处于上述第一小区与上述第三小区的重叠覆盖区域,在上述第三基站不调度上述第三小区对应的第二载波时,上述处理器还用于调度上述第二小区对应的第二载波。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对本发明实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1a为本发明一些实施例提供的蜂窝组网结构;
图1b为本发明一些实施例提供的公网组网结构;
图2a为本发明实施例提供的多载波下的载波聚合实现方法的流程示意图;
图2b为本发明实施例提供的蜂窝组网结构中的部分结构示意图;
图3为本发明另一些实施例提供的多载波下的载波聚合实现方法的流程示意图;
图4a为本发明实施例提供的跨载波承载数据信息的应用示意图;
图4b为本发明实施例提供的跨载波调度的示意图;
图5为本发明实施例提供的多载波下的载波聚合实现方法的应用示意图;
图6为本发明实施例提供的基站的结构示意图;
图7为本发明另一些实施例提供的基站的结构示意图;
图8为本发明实施例提供的基站的另一结构示意图;
图9为本发明实施例提供的基站的另一结构示意图。
具体实施方式
下面将结合本发明实施例的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明实施例提供了一种多载波下的载波聚合实现方法,用于提高载波资源的利用率,提高业务容量。本发明实施例还相应提供了一种多载波下的载波聚合实现方法对应的基站。
本发明实施例提供的载波聚合实现方法可以应用于蜂窝通信系统下的蜂窝组网,例如六扇区组网,还可以应用于公网组网(所谓公网组网是指公网的组网方式,公网是指普通电路交换网,比如德国电信、中国移动等架设的骨干 及分支网络)。首先,简单对蜂窝组网和公网组网进行描述,在蜂窝组网或者公网组网中,基站可以采用全向天线来实现小区覆盖,也可以采用定向天线来实现小区覆盖。其中,采用全向天线来实现小区覆盖是指通过1副全向天线实现1个小区覆盖或者多个小区覆盖(多个小区时,每个小区对应不同载波)。采用定向天线来实现小区覆盖是指通过1副定向天线实现1个小区覆盖或者多个小区覆盖(多个小区时,每个小区对应不同载波)。1副全向天线由1根或多根全向天线组成,1副定向天线由1根或多根定向天线组成。
图1a为本发明一些实施例提供的蜂窝组网结构,本发明实施例将以基站采用一副120度定向天线实现两个小区覆盖为例进行详细说明,即,一个基站配置有3副定向天线,这3副定向天线的指向不同,每副天线覆盖120°范围。在图1a中,采用三角形代表基站,图1a中从三角形延伸出的黑色粗线条表示一副定向天线,如图1a所示,在本发明实施例中,基站设置在六边形的中部区域,每副定向天线对应两个小区,即一个基站可以覆盖6个小区(对应7个六边形)。其中,一副定向天线产生两个方向的波束,一个方向的波束覆盖一个小区,另外一个方向的波束覆盖另一个小区。再加上另外2副定向天线,一共覆盖了6个小区,得到7个六边形。结合多个基站后,得到图1a所示的蜂窝结构。本发明实施例可以基于现有基站的天线结构来实现,不会增加天线系统的硬件成本。当然,在其它蜂窝组网方式中,一副定向天线可以产生多于两个方向的波束,例如三个、四个方向的波束,此时,一副定向天线可以覆盖3个小区、4个小区,本发明对此并不限制。
图1a中是通过一副定向天线实现两个小区的覆盖,当然,还可以是通过一副天线实现一个小区的覆盖。要实现图1a所示的一个基站覆盖6个小区(对应7个六边形),则需要配置6副定向天线,每副定向天线指向一个小区,每副定向天线覆盖60°范围。其中,一副定向天线产生一个方向的波束,覆盖一个小区,从而得到一个基站6个小区的蜂窝组网结构。
还需要说明,在图1a中一个基站下的6个小区中的任意相邻两个小区对应不同载波,其中,颜色相比较深的3个小区对应着一个载波,颜色相对较浅的另外3个小区对应着另一个载波,也就在蜂窝组网中实现了一种异频的六扇区组网(扇区看作图1a中的小区)。
图1b为本发明一些实施例提供的公网组网结构,在图1b中,基站可以采用1副或多副全向天线来实现小区覆盖,也可以采用1副或多副定向天线来实现小区覆盖。在1b中以采用1副定向天线实现两个小区为例进行说明,即一个基站配置有1副定向天线,1副定向天线指向两个小区,分别为小区1和小区2。其中,1副定向天线产生两个方向的波束,一个方向的波束覆盖小区1,另一个方向的波束覆盖小区2。需要说明,在其它实施例中,一副定向天线还可以产生三个方向、四个方向甚至四个以上方向的波束,对应将覆盖3个小区、4个小区和4个以上小区,本发明对此并不限制。
图1b中是以一副定向天线产生两个方向波束,一个波束覆盖小区1,另外一个波束覆盖小区2。当然,还可以是一副定向天线产生一个方向的波束,那么在图1b中基站需要配置2副定向天线,一副定向天线产生一个方向的波束,该波束覆盖小区1,另外一副定向天线产生另一个方向的波束,覆盖小区2。
当然,在图1b中,还可以由两个基站来实现,比如,基站1和基站2。其中,基站1配置了一副定向天线,产生一个方向的波束,覆盖小区1。基站2配置了另外一副定向天线,产生了另一个方向的波束,覆盖小区2。
基于上述图1a和图1b所提供的两种组网结构,本发明实施例提供了一种多载波下的载波聚合实现方法,用以通过载波聚合方式,扩大业务容量,提高载波资源的利用率。下面将结合具体实施例,对本发明技术方案进行详细介绍。
请参阅图2a和图2b,图2a为本发明实施例提供的多载波下的载波聚合实现方法的流程示意图;图2b为本发明实施例提供的蜂窝组网结构中的部分结构示意图;如图2a所示,一种多载波下的载波聚合实现方法可包括:
201、基站建立第一小区和第二小区;
其中,本发明实施例由一个基站建立第一小区和第二小区,具体可以是图1a所示的蜂窝组网结构或者图1b所示的公网组网结构,而对应图1a所示的蜂窝组网结构,可以采用图1a中一个基站实现两个小区的实现方式来实现,对应图1b所示的公网组网结构,可以采用图1b中一个基站实现两个小区的实现方式来实现。
若为图1a所示的蜂窝组网结构时,如图2b所示,基站用图中“2”所在的 三角形表示,通过1副定向天线或者2副定向天线(图2b中以标注了2副定向天线为例),产生两个方向的波束,一个方向的波束覆盖第一小区,另外一个方向的波束覆盖第二小区。第一小区配置了第一载波(如图2b中的f1),第二小区配置了第二载波(如图2b中的f2)。比如在采用图1b所示的公网组网时,一个基站可以通过1副定向天线或者2副定向天线产生两个方向的波束实现,其中,一个方向的波束覆盖小区1,另一个方向的波束覆盖了小区2。其中,小区1作为本发明实施例中的第一小区,小区2作为本发明实施例中的第二小区。第一小区配置了第一载波,第二小区配置了第二载波。
其中,不管是在图2b中还是在图1b中,其中一个方向波束覆盖第一小区时,是由该方向波束发送第一载波的公共控制信号,覆盖第一小区。同样,在另外一个方向波束覆盖第二小区时,是由该方向波束发送第二载波的公共控制信号,覆盖第二小区。可以理解,基站通过1副定向天线或者2副定向天线产生两个方向的波束时,具体是通过配置不同的广播波束权值,比如在第一小区中,是基站使用1组广播波束权值使得定向天线产生一个方向的波束,然后发送第一载波的公共控制信号覆盖第一小区。而在第二小区中,是基站使用另外1组广播波束权值使得定向天线产生另外一个方向的波束,然后发送第二载波承载的公共控制信号覆盖第二小区。
还需要说明,在本发明实施例中,还可以由基站给第一小区配置第一功率和/或第一倾角,给第二小区配置第二功率和/或第二倾角,然后基站通过定向天线发送第一功率和/或第一倾角对应的公共控制信号,覆盖得到第一小区,再通过定向天线发送第二功率和/或第二倾角对应的公共控制信号,覆盖得到第二小区,在此不作限定。
其中,第一载波承载的公共控制信号覆盖了第一小区,则说明第一小区上的终端可以通过第一载波上的控制信道收发数据(可以理解,载波上承载有数据信道和控制信道),这里数据可以是数据信息和控制信息,当然同样可以通过第一载波上的数据信道收发数据信息和其它用户专用的信号。同样,第二载波承载的公共控制信号覆盖了第二小区,则说明第二小区上的终端可以通过第二载波上的控制信道收发数据,当然还可以通过第二载波上的数据信道收发数据信息和其它用户专用的信号。
而将第一小区和第二小区分别配置不同载波后,对于第一小区终端而言,在利用第一载波的控制信道收发数据时,不会受到来自第二载波的控制信道的同频干扰,反之,对于第二小区终端而言,在利用第二载波的控制信道收发数据时,不会受到来自第一载波的控制信道的同频干扰。
还需要说明,虽然通过空间定向波束,或者配置功率和/或倾角,使得第一载波承载的公共控制信号覆盖得到第一小区,第二载波承载的公共控制信号覆盖得到第二小区,能够尽量减小第一小区和第二小区的重叠覆盖区域,以降低小区边缘的信号干扰,但是同时又允许第一小区和第二小区存在一定的重叠覆盖区域,重叠覆盖区域是指被第一小区对应的第一载波承载的公共控制信号覆盖,也被第二小区对应的第二载波承载的公共控制信号覆盖,也就是说,在重叠覆盖区域中的终端,可以通过第一小区对应的第一载波上的数据信道收发数据,也可以通过第二小区对应的第二载波上的数据信道收发数据。在此种应用场景中,在重叠覆盖区域中的终端可以基于第一小区对应的第一载波进行CQI测量,感知第一小区的信道质量,以及基于第二小区对应的第二载波进行CQI测量,感知第二小区的信道质量,以选择信道质量更好的小区接入,或者是在重叠覆盖区域中实现小区切换。
下面简单介绍一下重叠覆盖区域的形成,举例来说,请结合图2b,基站通过2副定向天线发射波束,1副定向天线发射波束1,另外1副定向天线发射波束2,波束1和波束2中均包括主瓣波束,以及旁瓣波束或者零陷波束,对于第一小区(图2b中对应载波为f1)而言,由波束1的主瓣波束发送载波f1所承载的公共控制信号,该公共控制信号覆盖形成第一小区,同时,波束2的旁瓣波束或零陷波束发送载波f2(对应第二小区)所承载的公共控制信号覆盖第一小区的部分区域,在这部分区域上,同时被载波f1所承载的公共控制信号覆盖,同时也被载波f2所承载的公共控制信号覆盖,从而在第一小区上形成了一块重叠覆盖区域。反之,对于第二小区(图2b中对应载波f2)而言,由波束2的主瓣波束发送载波f2所承载的公共控制信号,该公共控制信号覆盖形成第二小区,同时,波束1的旁瓣波束或零陷波束发送载波f1(对应第一小区)所承载的公共控制信号覆盖第二小区的部分区域,在这部分区域上,同时被载波f2所承载的公共控制信号覆盖,同时也被载波f1所承载的公共控制 信号覆盖,从而在第二小区上形成了一块重叠覆盖区域。然后由第一小区上的这块重叠覆盖区域和第二小区上的这块重叠覆盖区域,组合得到本发明实施例中所提供的第一小区和第二小区的重叠覆盖区域。
202、上述基站将上述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将上述第二小区对应的第二载波配置为上述终端的CA辅载波,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及该数据信息对应的控制信息。
可以看出,对处于第一小区且不被第二小区对应的第二载波承载的公共控制信号所覆盖的终端(在后续内容中以CA终端来描述该终端),基站将第一小区对应的第一载波配置为该CA终端的CA主载波,然后将第二小区对应的第二载波配置为该CA终端的CA辅载波。由于该CA终端所处区域不被第二小区对应的第二载波承载的公共控制信号所覆盖(CA终端不处于上述所介绍的重叠覆盖区域),也就是说CA终端不能通过第二小区对应的第二载波上的控制信道收发数据,但是能通过第二小区对应的第二载波上的数据信道收发数据,这里的数据包括控制信息和数据信息,因此,可以通过第二小区对应的第二载波承载CA终端的数据信息和专用参考信号(数据信息和专用参考信号是在第二载波的数据信道上承载),以充分利用第二小区对应的第二载波,提高载波资源利用率。而在通过第二小区对应的第二载波承载CA终端的数据信息时,可以通过第一小区对应的第一载波承载数据信息对应的控制信息,或者通过第二小区对应的第二载波承载数据信息对应的控制信息(由于该CA终端不被第二小区对应的第二载波承载的公共控制信号覆盖,此处是指通过第二小区对应的第二载波上的数据信道承载该控制信息),从而可以正确获取到控制信息,完成对数据信息的调制和编码。最后,在通过第二小区对应的第二载波承载CA终端的数据信息时,不管是通过第一小区对应的第一载波承载相应的控制信息,还是通过第二小区对应的第二载波上的数据信道承载相应的控制信 息,都没有使用到第二小区对应的第二载波上的控制信道,那么,即使同时通过第二小区对应的第二载波上的控制信道来为第二小区内的终端发送控制信息,也不会造成第一小区和第二小区之间控制信道上的同频干扰。
结合上述说明,本发明实施例提供的公共控制信号主要用于向终端提供小区测量参考信号、广播消息等,以满足终端的网络接入和在控制信道上的数据传输。可选地,该公共控制信号可以包括CRS、PBCH控制信息和SIB等。控制信息是用于数据信息的调制和编码,比如MCS信息。
可选地,在通过第二小区对应的第二载波上的数据信道承载上述数据信息的控制信息时,具体可以用第二载波上的数据信道中的EPDCCH来承载。而通过第一载波承载数据信息对应的控制信息,具体可以是用第一载波的控制信道上的PDCCH承载。
在本发明一些实施例中,第二小区对应的第二载波还用于发送用户专用测量信号,该用户专用测量信号至少覆盖第一小区。那么在该情景下,若第二小区对应的第二载波用于承载上述CA终端发送的数据信息,同时通过第二小区对应的第二载波发送用户专用测量信号,由于用户专用测量信号覆盖了第一小区,那么该CA终端就能正确解析用户专用测量信号,以完成相应测量,从而实现相应业务。可选地,此处的用户专用测量信号可以是信道状态指示参考信号(Channel State Indication RS,简称CSI-RS)。
还可以理解,第一小区和第二小区的重叠覆盖区域在本发明实施例中还可以用于完成CA终端在第二载波上的时频同步。具体是在同时采用第一小区对应的第一载波和第二小区对应的第二载波为该CA终端承载数据信息时,CA终端在第一载波承载数据信息和在第二载波承载数据信息需要时频同步,此时,可以利用重叠覆盖区域上的第二小区对应的第二载波承载的公共控制信号实现同步,比如CRS。
还可以理解,由于在本发明实施例中第二小区对应的第二载波可以为CA终端使用,还可以为第二小区中的终端使用,因此,在本发明实施例中基站还可以对第二小区的第二载波配置SDM调度策略,那么在SDM调度策略上,基站可以在不同的空间资源上调度第二小区对应的第二载波,为上述CA终端承载数据信息和专用参考信号,以及为第二小区中的终端承载数据信息。
请参阅图3,图3为本发明另一些实施例提供的多载波下的载波聚合实现方法的流程示意图;如图3所示,一种多载波下的载波聚合实现方法可包括:
301、第一基站建立第一小区,第二基站建立第二小区;
其中,与图2所示实施例相比,在本发明实施例中,可以通过第一基站建立第一小区,然后再由第二基站建立第二小区,此种情况多出现在公网组网中,得到如图1b所示的公网组网结构。第一小区对应第一载波,第二对应第二载波。
第一基站可以通过一副定向天线发射波束1,波束1覆盖得到第一小区,同样,第二基站通过另外一副定向天线发射波束2,波束2覆盖得到第二小区,具体实现可以参照步骤201中的详细介绍,在此不再赘述。
302、上述第一基站将上述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为上述终端的CA辅载波,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。
其中,在本发明实施例中基于步骤301的方式建立第一小区和第二小区,然后基于与步骤202相同的方式配置CA终端,以实现提高载波资源利用率的目的,具体可以参照步骤202中的详细说明,在此不再赘述。
本发明实施例提供的第一小区和第二小区可以是相邻的两个小区,例如可以是蜂窝组网结构中同一个基站建立的相邻两个小区。可以理解,对应蜂窝组网结构一个基站下的相邻两个小区,结合图2b进行说明,对处于第一小区,且不被第二小区对应的第二载波承载的公共控制信号覆盖,然后将第一小区对应第一小区配置为该终端的CA主载波,将第二小区对应的第二载波配置为该终端的CA辅载波。反之,对于处于第二小区,且不被第一小区对应的第一载波承载的公共控制信号所覆盖的终端,基站可以将第二小区对应的第二载波配置为该终端的CA主载波,将第一小区对应的第一载波配置为该终端的CA辅 载波。也就是说对于第一小区和第二小区为相邻小区的应用场景下,可以同时在第一小区和第二小区中配置CA终端,以实现载波资源调度,提高载波资源利用率。
请参阅图4a和图4b,图4a为本发明实施例提供的跨载波承载数据信息的应用示意图;图4b为本发明实施例提供的跨载波调度的示意图。在图4a中以蜂窝组网场景下的应用为例,可以结合图2b,第一小区对应载波f1,第二小区对应载波f2。对于处于第一小区中的终端A,且该终端A不被f2承载的公共控制信号所覆盖,那么基站将f1配置为终端A的CA主载波,将f2配置为终端A的CA辅载波。同样,对处于第二小区中的终端B,基站将f2配置为终端B的主载波,将f1配置为终端B的辅载波。
对于终端A,可以通过f2承载数据信息,从而扩大f2的数据覆盖范围,如图4a中的椭圆区域f2,此时,可以通过f1为该数据信息承载对应的控制信息,如图4b中的左列(终端A)所示。对于终端B,可以通过f1承载数据信息,从而扩大f1的数据覆盖反问,如图4a中的椭圆区域f1,此时,可以通过f2为该数据信息承载对应的控制信息,如图4b中的右列(终端B)所示。其中,终端A在通过f2承载数据信息时,其通过f1承载对应的控制信息,同样,终端B在通过f1承载数据信息,其通过f2承载对应的控制信息,使得第一小区和第二小区之间不会产生控制信道的同频干扰。
在图4a中,在第一小区中,基站给f2配置了SDM调度策略,在第二小区中,基站给f1配置了SDM调度策略。因此,终端A和终端B能够在不同空间资源上使用f1,同样,终端A和终端B能够在不同空间资源上使用f2,实现资源复用。
本发明实施例提供的第一小区和第二小区还可以是包含关系,即第二小区处于第一小区之中,也就是第一小区和第二小区的重叠覆盖区域等于第二小区。比如图1b所示的公网组网。可以理解,在此应用场景下,第二小区中的所有终端所处区域都被会第一小区对应的第一载波承载的公共控制信号所覆盖,因此,只能对第一小区中的终端进行CA的配置。
请参阅图5,图5为本发明实施例提供的多载波下的载波聚合实现方法的应用示意图。在图5中,将本发明实施例提供的如图1b所示的公网组网结合 专网进行运用,其中,专网是指专用网络,例如铁路系统专网、公安系统专网、防汛专网、军用专网等,专网只是某个系统内部网络,只为该系统服务。在图5中,具体以铁路系统专网为例进行说明。
首先,在公网中实现了本发明技术方案,如图5所示,基站建立了第一小区和第二小区,第一小区对应f1,第二小区对应f2,对于第一小区中的CA终端,也完成了将f1配置为其主载波,将f2配置为其辅载波。铁路系统专网所在的基站还建立了第三小区,第三小区对应的也是f2,第二小区和第三小区没有重叠覆盖区域,那么在第二小区对应的f2为第二小区终端承载数据,同时第三小区对应的f2为第三小区终端承载数据,也不会造成第二小区和第三小区之间的干扰(包括了数据信道和控制信道上的干扰)。进一步地,在这种情景下,上述CA终端所处区域除了不被第二小区对应的f2承载的公共控制信号所覆盖,上述CA终端所处区域还不在第一小区和第三小区的重叠覆盖区域,那么,在通过第二小区对应的f2为上述CA终端承载数据信息和专用参考信号时,同时可以通过第三小区对应的f2为第三小区的终端承载数据,使得CA终端利用第二小区的f2和第三小区终端利用第三小区对应的f2时,也不会造成信号干扰。而在其它基站没有使用第三小区对应的f2时,那么第一基站可以调用第二小区对应的f2,为处于第一小区和第三小区的重叠覆盖区域的CA终端承载数据,具体来说,第一小区和第三小区的重叠覆盖区域上的CA终端使用第二小区对应的f2,和第三小区上的终端使用第三小区对应的f2是基于时分复用模式,也就是在高铁通过第一小区和第三小区的重叠覆盖区域后,公网中的基站又可以通过第二小区对应的f2为第一小区和第三小区的重叠覆盖区域上的CA终端使用。
请参阅图6,图6为本发明一些实施例提供的基站的结构示意图;如图6所示,一种基站600可包括:
建立模块610,用于建立第一小区和第二小区;
配置模块620,用于将上述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将上述第二小区对应的第二载波配置为上述终端的CA辅载波,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,
上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。
可选地,在本发明一些可实施的方式中,上述建立模块610可具体用于,通过天线发射第一波束和第二波束,上述第一波束用于发送上述第一小区对应的第一载波承载的公共控制信号,上述第一小区对应的第一载波承载的公共控制信号覆盖形成上述第一小区;上述第二波束用于发送上述第二小区对应的第二载波承载的公共控制信号,上述第二小区对应的第二载波承载的公共控制信号覆盖形成上述第二小区。
可选地,在本发明一些可实施的方式中,上述基站600还包括调度模块630,其中,调度模块630用于在不同空间上调度上述第二小区对应的第二载波,利用上述第二小区对应的第二载波为上述终端承载数据信息和专用参考信号,以及利用上述第二小区对应的第二载波为其覆盖的终端承载数据信息。
可选地,在本发明一些可实施的方式中,上述第二小区对应的第二载波还用于发送用户专用测量信号,上述用户专用测量信号至少覆盖上述第一小区。
可选地,在本发明一些可实施的方式中,上述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
可选地,在本发明一些可实施的方式中,若存在上述基站之外的其它基站建立第三小区,上述第三小区配置第二载波,上述第二小区与上述第一小区具有重叠覆盖区域,上述第二小区和上述第三小区没有重叠覆盖区域,上述终端所处区域不处于上述第一小区与第二小区的重叠覆盖区域且不处于上述第一小区与上述第三小区的重叠覆盖区域,在上述其它基站不调度上述第三小区对应的第二载波时,上述调度模块630还用于调度上述第二小区对应的第二载波。
可以看出,在本发明实施例中,通过基站600中的建立模块610建立第一小区和第二小区,配置模块620将第一小区对应的第一载波配置为终端(在本发明实施例中以CA终端进行描写)的载波聚合CA主载波,以及将上述第二 小区对应的第二载波配置为上述终端的CA辅载波,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。这就是说,也就是说CA终端不能通过第二小区对应的第二载波上的控制信道收发数据,但是能通过第二小区对应的第二载波上的数据信道收发数据,这里的数据包括控制信息和数据信息,因此,可以通过第二小区对应的第二载波承载CA终端的数据信息和专用参考信号(数据信息和专用参考信号是在第二载波的数据信道上承载),以充分利用第二小区对应的第二载波,提高载波资源利用率。而在通过第二小区对应的第二载波承载CA终端的数据信息时,可以通过第一小区对应的第一载波承载数据信息对应的控制信息,或者通过第二小区对应的第二载波承载数据信息对应的控制信息(由于该CA终端不被第二小区对应的第二载波承载的公共控制信号覆盖,此处是指通过第二小区对应的第二载波上的数据信道承载该控制信息),从而可以正确获取到控制信息,完成对数据信息的调制和编码。最后,在通过第二小区对应的第二载波承载CA终端的数据信息时,不管是通过第一小区对应的第一载波承载相应的控制信息,还是通过第二小区对应的第二载波上的数据信道承载相应的控制信息,都没有使用到第二小区对应的第二载波上的控制信道,那么,即使这个时候还通过第二小区对应的第二载波上的控制信道来为第二小区内的终端发送控制信息,也不会造成第一小区和第二小区之间控制信道上的同频干扰。
可以理解的是,本实施例的基站600的各功能模块的功能可根据上述方法实施例中的方法具体实现,其具体实现过程可以参照上述方法实施例的相关描述,此处不再赘述。
请参阅图7,图7为本发明另一些实施例提供的基站的结构示意图;如图7所示,一种基站700可包括:
建立模块710,用于建立第一小区;
配置模块720,用于将上述第一小区对应的第一载波配置为终端的载波聚 合CA主载波,以及将第二小区对应的第二载波配置为上述终端的CA辅载波,上述第二小区由第二基站建立,上述终端处于上述第一小区,且上述终端所处区域不被上述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息和专用参考信号,上述第一小区对应的第一载波用于承载上述数据信息对应的控制信息;或者,
上述第二小区对应的第二载波用于承载上述终端需要发送的数据信息、专用参考信号以及上述数据信息对应的控制信息。
可选地,在本发明一些可能的实施例中,上述建立模块710具体用于,通过天线发射第一波束,上述第一波束用于发送上述第一小区对应的第一载波承载的公共控制信号,上述第一小区对应的第一载波承载的公共控制信号覆盖形成上述第一小区。
可选地,在本发明一些可能的实施例中,上述第二小区对应的第二载波还用于发送用户专用测量信号,上述用户专用测量信号至少覆盖上述第一小区。
可选地,在本发明一些可能的实施例中,上述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
可选地,在本发明一些可能的实施例中,上述基站700还包括:调度模块730,用于在不同空间上调度上述第二小区对应的第二载波,利用上述第二小区对应的第二载波为上述终端承载数据信息和专用参考信号,以及利用上述第二小区对应的第二载波为其覆盖的终端承载数据信息。
可选地,在本发明一些可能的实施例中,若存在第三基站建立第三小区,上述第三小区配置第二载波,上述第二小区与上述第一小区具有重叠覆盖区域,上述第二小区和上述第三小区没有重叠覆盖区域,上述终端所处区域不处于上述第一小区与第二小区的重叠覆盖区域且不处于上述第一小区与上述第三小区的重叠覆盖区域,在上述第三基站不调度上述第三小区对应的第二载波时,上述调度模块730还用于调度上述第二小区对应的第二载波。
可以理解的是,本实施例的基站700的各功能模块的功能可根据上述方法实施例中的方法具体实现,其具体实现过程可以参照上述方法实施例的相关描述,此处不再赘述。
请参考图8,图8为本发明实施例提供的基站的另一结构示意图,其中,该基站800可包括至少一个处理器801(例如CPU,Central Processing Unit),至少一个网络接口或者其它通信接口,存储器802,接收器803,发送器804和至少一个通信总线,用于实现这些装置之间的连接通信。所述处理器801用于执行存储器802中存储的可执行模块,例如计算机程序指令。所述存储器802可能包含高速随机存取存储器(RAM,Random Access Memory),也可能还包括非不稳定的存储器(non-volatile memory),例如至少一个磁盘存储器。通过至少一个网络接口(可以是有线或者无线)实现该系统网关与至少一个其它网元之间的通信连接,可以使用互联网,广域网,本地网,城域网等。
如图8所示,在一些实施方式中,所述存储器802中存储了程序指令,程序指令可以被处理器801执行,所述处理器801具体执行以下步骤:建立第一小区和第二小区,将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将所述第二小区对应的第二载波配置为所述终端的CA辅载波,所述终端处于所述第一小区,且所述终端所处区域不被所述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息和专用参考信号,所述第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。
在一些实施方式中,所述处理器801还可以执行以下步骤:通过天线发射第一波束和第二波束,所述第一波束用于发送所述第一小区对应的第一载波承载的公共控制信号,所述第一小区对应的第一载波承载的公共控制信号覆盖形成所述第一小区;所述第二波束用于发送所述第二小区对应的第二载波承载的公共控制信号,所述第二小区对应的第二载波承载的公共控制信号覆盖形成所述第二小区。
在一些实施方式中,所述处理器801还可以执行以下步骤:在不同空间上调度所述第二小区对应的第二载波,利用所述第二小区对应的第二载波为所述终端承载数据信息和专用参考信号,以及利用所述第二小区对应的第二载波为其覆盖的终端承载数据信息。
在一些实施方式中,若存在所述基站之外的其它基站建立第三小区,所述第三小区配置第二载波,所述第二小区与所述第一小区具有重叠覆盖区域,所述第二小区和所述第三小区没有重叠覆盖区域,所述终端所处区域不处于所述第一小区与第二小区的重叠覆盖区域且不处于所述第一小区与所述第三小区的重叠覆盖区域,在所述其它基站不调度所述第三小区对应的第二载波时,所述处理器801还可以执行以下步骤:调度所述第二小区对应的第二载波。
可以理解的是,本实施例的基站800的各功能模块的功能可根据上述方法实施例中的方法具体实现,其具体实现过程可以参照上述方法实施例的相关描述,此处不再赘述。
请参考图9,图9为本发明实施例提供的基站的另一结构示意图,其中,该基站900可包括至少一个处理器901(例如CPU),至少一个网络接口或者其它通信接口,存储器902,接收器903,发送器904和至少一个通信总线,用于实现这些装置之间的连接通信。所述处理器901用于执行存储器902中存储的可执行模块,例如计算机程序指令。所述存储器802可能包含高速随机存取存储器(RAM),也可能还包括非不稳定的存储器(non-volatile memory),例如至少一个磁盘存储器。通过至少一个网络接口(可以是有线或者无线)实现该系统网关与至少一个其它网元之间的通信连接,可以使用互联网,广域网,本地网,城域网等。
如图9所示,在一些实施方式中,所述存储器902中存储了程序指令,程序指令可以被处理器901执行,所述处理器901具体执行以下步骤:建立第一小区,将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为所述终端的CA辅载波,所述第二小区由第二基站建立,所述终端处于所述第一小区,且所述终端所处区域不被所述第二小区对应的第二载波承载的公共控制信号所覆盖;
其中,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息和专用参考信号,所述第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。
在一些实施方式中,所述处理器901还可以执行以下步骤:通过天线发射 第一波束,所述第一波束用于发送所述第一小区对应的第一载波承载的公共控制信号,所述第一小区对应的第一载波承载的公共控制信号覆盖形成所述第一小区。
在一些实施方式中,所述处理器901还可以执行以下步骤:在不同空间上调度所述第二小区对应的第二载波,利用所述第二小区对应的第二载波为所述终端承载数据信息和专用参考信号,以及利用所述第二小区对应的第二载波为其覆盖的终端承载数据信息。
在一些实施方式中,若存在第三基站建立第三小区,所述第三小区配置第二载波,所述第二小区与所述第一小区具有重叠覆盖区域,所述第二小区和所述第三小区没有重叠覆盖区域,所述终端所处区域不处于所述第一小区与第二小区的重叠覆盖区域且不处于所述第一小区与所述第三小区的重叠覆盖区域,在所述第三基站不调度所述第三小区对应的第二载波时,所述处理器901还可以执行以下步骤:调度所述第二小区对应的第二载波。
可选地,在本发明一些实施例中,所述第二小区对应的第二载波还用于发送用户专用测量信号,所述用户专用测量信号至少覆盖所述第一小区。
可选地,在本发明一些实施例中,所述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
可以理解的是,本实施例的基站900的各功能模块的功能可根据上述方法实施例中的方法具体实现,其具体实现过程可以参照上述方法实施例的相关描述,此处不再赘述。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分,可以参见其他实施例的相关描述。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统,装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或 一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上对本发明所提供的一种多载波下的载波聚合实现方法及基站进行了详细介绍,对于本领域的一般技术人员,依据本发明实施例的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (37)

  1. 一种多载波下的载波聚合实现方法,其特征在于,包括:
    基站建立第一小区和第二小区;
    所述基站将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将所述第二小区对应的第二载波配置为所述终端的CA辅载波,所述终端处于所述第一小区,且所述终端所处区域不被所述第二小区对应的第二载波承载的公共控制信号所覆盖;
    其中,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息和专用参考信号,所述第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,
    所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。
  2. 根据权利要求1所述的方法,其特征在于,所述基站建立第一小区和第二小区包括:
    所述基站通过天线发射第一波束和第二波束,所述第一波束用于发送所述第一小区对应的第一载波承载的公共控制信号,所述第一小区对应的第一载波承载的公共控制信号覆盖形成所述第一小区;所述第二波束用于发送所述第二小区对应的第二载波承载的公共控制信号,所述第二小区对应的第二载波承载的公共控制信号覆盖形成所述第二小区。
  3. 根据权利要求1或2所述的方法,其特征在于,
    所述基站在不同空间上调度所述第二小区对应的第二载波,利用所述第二小区对应的第二载波为所述终端承载数据信息和专用参考信号,以及利用所述第二小区对应的第二载波为其覆盖的终端承载数据信息。
  4. 根据权利要求1~3任一项所述的方法,其特征在于,所述第二小区对应的第二载波还用于发送用户专用测量信号,所述用户专用测量信号至少覆盖所述第一小区。
  5. 根据权利要求1~4任一项所述的方法,其特征在于,所述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
  6. 根据权利要求1~5任一项所述的方法,其特征在于,若所述基站之外 的其它基站建立第三小区,所述第三小区配置第二载波,所述第二小区与所述第一小区具有重叠覆盖区域,所述第二小区和所述第三小区没有重叠覆盖区域,所述终端所处区域不处于所述第一小区与第二小区的重叠覆盖区域且不处于所述第一小区与所述第三小区的重叠覆盖区域,在所述其它基站不调度所述第三小区对应的第二载波时,所述基站调度所述第二小区对应的第二载波。
  7. 一种多载波下的载波聚合实现方法,其特征在于,包括:
    第一基站建立第一小区;
    所述第一基站将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为所述终端的CA辅载波,所述第二小区由第二基站建立,所述终端处于所述第一小区,且所述终端所处区域不被所述第二小区对应的第二载波承载的公共控制信号所覆盖;
    其中,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息和专用参考信号,所述第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,
    所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。
  8. 根据权利要求7所述的方法,其特征在于,所述第一基站建立第一小区包括:
    所述第一基站通过天线发射第一波束,所述第一波束用于发送所述第一小区对应的第一载波承载的公共控制信号,所述第一小区对应的第一载波承载的公共控制信号覆盖形成所述第一小区。
  9. 根据权利要求7或8所述的方法,其特征在于,所述第二基站建立第二小区包括:
    所述第二基站通过天线发射第二波束,所述第二波束用于发送所述第二小区对应的第二载波承载的公共控制信号,所述第二小区对应的第二载波承载的公共控制信号覆盖形成所述第二小区。
  10. 根据权利要求7~9任一项所述的方法,其特征在于,
    所述第二小区对应的第二载波还用于发送用户专用测量信号,所述用户专用测量信号至少覆盖所述第一小区。
  11. 根据权利要求7~10任一项所述的方法,其特征在于,所述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
  12. 根据权利要求7~10任一项所述的方法,其特征在于,
    所述第一基站在不同空间上调度所述第二小区对应的第二载波,利用所述第二小区对应的第二载波为所述终端承载数据信息和专用参考信号,以及利用所述第二小区对应的第二载波为其覆盖的终端承载数据信息。
  13. 根据权利要求7~12任一项所述的方法,其特征在于,若第三基站建立第三小区,所述第三小区配置第二载波,所述第二小区与所述第一小区具有重叠覆盖区域,所述第二小区和所述第三小区没有重叠覆盖区域,所述终端所处区域不处于所述第一小区与第二小区的重叠覆盖区域且不处于所述第一小区与所述第三小区的重叠覆盖区域,在所述第三基站不调度所述第三小区对应的第二载波时,所述第一基站调度所述第二小区对应的第二载波。
  14. 一种基站,其特征在于,包括:
    建立模块,用于建立第一小区和第二小区;
    配置模块,用于将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将所述第二小区对应的第二载波配置为所述终端的CA辅载波,所述终端处于所述第一小区,且所述终端所处区域不被所述第二小区对应的第二载波承载的公共控制信号所覆盖;
    其中,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息和专用参考信号,所述第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,
    所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。
  15. 根据权利要求14所述的基站,其特征在于,
    所述建立模块具体用于,通过天线发射第一波束和第二波束,所述第一波束用于发送所述第一小区对应的第一载波承载的公共控制信号,所述第一小区对应的第一载波承载的公共控制信号覆盖形成所述第一小区;所述第二波束用于发送所述第二小区对应的第二载波承载的公共控制信号,所述第二小区对应 的第二载波承载的公共控制信号覆盖形成所述第二小区。
  16. 根据权利要求14或15所述的基站,其特征在于,所述基站还包括:
    调度模块,用于在不同空间上调度所述第二小区对应的第二载波,利用所述第二小区对应的第二载波为所述终端承载数据信息和专用参考信号,以及利用所述第二小区对应的第二载波为其覆盖的终端承载数据信息。
  17. 根据权利要求14~16任一项所述的基站,其特征在于,
    所述第二小区对应的第二载波还用于发送用户专用测量信号,所述用户专用测量信号至少覆盖所述第一小区。
  18. 根据权利要求14~17任一项所述的基站,其特征在于,
    所述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
  19. 根据权利要求16~18任一项所述的基站,其特征在于,
    若存在所述基站之外的其它基站建立第三小区,所述第三小区配置第二载波,所述第二小区与所述第一小区具有重叠覆盖区域,所述第二小区和所述第三小区没有重叠覆盖区域,所述终端所处区域不处于所述第一小区与第二小区的重叠覆盖区域且不处于所述第一小区与所述第三小区的重叠覆盖区域,在所述其它基站不调度所述第三小区对应的第二载波时,所述调度模块还用于调度所述第二小区对应的第二载波。
  20. 一种基站,其特征在于,包括:
    建立模块,用于建立第一小区;
    配置模块,用于将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为所述终端的CA辅载波,所述第二小区由第二基站建立,所述终端处于所述第一小区,且所述终端所处区域不被所述第二小区对应的第二载波承载的公共控制信号所覆盖;
    其中,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息和专用参考信号,所述第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,
    所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。
  21. 根据权利要求20所述的基站,其特征在于,
    所述建立模块具体用于,通过天线发射第一波束,所述第一波束用于发送所述第一小区对应的第一载波承载的公共控制信号,所述第一小区对应的第一载波承载的公共控制信号覆盖形成所述第一小区。
  22. 根据权利要求20或21所述的基站,其特征在于,
    所述第二小区对应的第二载波还用于发送用户专用测量信号,所述用户专用测量信号至少覆盖所述第一小区。
  23. 根据权利要求20~22任一项所述的基站,其特征在于,
    所述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
  24. 根据权利要求20~23任一项所述的基站,其特征在于,所述基站还包括:
    调度模块,用于在不同空间上调度所述第二小区对应的第二载波,利用所述第二小区对应的第二载波为所述终端承载数据信息和专用参考信号,以及利用所述第二小区对应的第二载波为其覆盖的终端承载数据信息。
  25. 根据权利要求24所述基站,其特征在于,若存在第三基站建立第三小区,所述第三小区配置第二载波,所述第二小区与所述第一小区具有重叠覆盖区域,所述第二小区和所述第三小区没有重叠覆盖区域,所述终端所处区域不处于所述第一小区与第二小区的重叠覆盖区域且不处于所述第一小区与所述第三小区的重叠覆盖区域,在所述第三基站不调度所述第三小区对应的第二载波时,所述调度模块还用于调度所述第二小区对应的第二载波。
  26. 一种基站,其特征在于,包括:
    通过总线连接的接收器、发送器、存储器和处理器;
    其中,所述存储器用于存储程序指令;
    所述处理器用于,执行存储在所述存储器中的程序指令;
    所述处理器还用于,建立第一小区和第二小区,将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将所述第二小区对应的第二载波配置为所述终端的CA辅载波,所述终端处于所述第一小区,且所述终端所处区域不被所述第二小区对应的第二载波承载的公共控制信号所覆盖;
    其中,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息和专用参考信号,所述第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,
    所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。
  27. 根据权利要求26所述的基站,其特征在于,
    所述处理器具体用于,通过天线发射第一波束和第二波束,所述第一波束用于发送所述第一小区对应的第一载波承载的公共控制信号,所述第一小区对应的第一载波承载的公共控制信号覆盖形成所述第一小区;所述第二波束用于发送所述第二小区对应的第二载波承载的公共控制信号,所述第二小区对应的第二载波承载的公共控制信号覆盖形成所述第二小区。
  28. 根据权利要求26或27所述的基站,其特征在于,
    所述处理器还用于,在不同空间上调度所述第二小区对应的第二载波,利用所述第二小区对应的第二载波为所述终端承载数据信息和专用参考信号,以及利用所述第二小区对应的第二载波为其覆盖的终端承载数据信息。
  29. 根据权利要求26~28任一项所述的基站,其特征在于,
    所述第二小区对应的第二载波还用于发送用户专用测量信号,所述用户专用测量信号至少覆盖所述第一小区。
  30. 根据权利要求26~29任一项所述的基站,其特征在于,所述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
  31. 根据权利要求26~30任一项所述的基站,其特征在于,若存在所述基站之外的其它基站建立第三小区,所述第三小区配置第二载波,所述第二小区与所述第一小区具有重叠覆盖区域,所述第二小区和所述第三小区没有重叠覆盖区域,所述终端所处区域不处于所述第一小区与第二小区的重叠覆盖区域且不处于所述第一小区与所述第三小区的重叠覆盖区域,在所述其它基站不调度所述第三小区对应的第二载波时,所述处理器还用于调度所述第二小区对应的第二载波。
  32. 一种基站,其特征在于,包括:
    通过总线连接的接收器、发送器、存储器和处理器;
    其中,所述存储器用于存储程序指令;
    所述处理器用于,执行存储在所述存储器中的程序指令;
    所述处理器还用于,建立第一小区,将所述第一小区对应的第一载波配置为终端的载波聚合CA主载波,以及将第二小区对应的第二载波配置为所述终端的CA辅载波,所述第二小区由第二基站建立,所述终端处于所述第一小区,且所述终端所处区域不被所述第二小区对应的第二载波承载的公共控制信号所覆盖;
    其中,所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息和专用参考信号,所述第一小区对应的第一载波用于承载所述数据信息对应的控制信息;或者,
    所述第二小区对应的第二载波用于承载所述终端需要发送的数据信息、专用参考信号以及所述数据信息对应的控制信息。
  33. 根据权利要求32所述的基站,其特征在于,
    所述处理器具体用于,通过天线发射第一波束,所述第一波束用于发送所述第一小区对应的第一载波承载的公共控制信号,所述第一小区对应的第一载波承载的公共控制信号覆盖形成所述第一小区。
  34. 根据权利要求32或33所述的基站,其特征在于,
    所述第二小区对应的第二载波还用于发送用户专用测量信号,所述用户专用测量信号至少覆盖所述第一小区。
  35. 根据权利要求32~34任一项所述的基站,其特征在于,
    所述公共控制信号包括公共参考信号CRS、物理广播信道PBCH控制信息和系统广播信息SIB。
  36. 根据权利要求32~35任一项所述的基站,其特征在于,
    所述处理器还用于,在不同空间上调度所述第二小区对应的第二载波,利用所述第二小区对应的第二载波为所述终端承载数据信息和专用参考信号,以及利用所述第二小区对应的第二载波为其覆盖的终端承载数据信息。
  37. 根据权利要求32~36任一项所述的基站,其特征在于,
    若存在第三基站建立第三小区,所述第三小区配置第二载波,所述第二小 区与所述第一小区具有重叠覆盖区域,所述第二小区和所述第三小区没有重叠覆盖区域,所述终端所处区域不处于所述第一小区与第二小区的重叠覆盖区域且不处于所述第一小区与所述第三小区的重叠覆盖区域,在所述第三基站不调度所述第三小区对应的第二载波时,所述处理器还用于调度所述第二小区对应的第二载波。
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