WO2017070947A1 - Procédé, appareil et système de planification coopérative - Google Patents

Procédé, appareil et système de planification coopérative Download PDF

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Publication number
WO2017070947A1
WO2017070947A1 PCT/CN2015/093422 CN2015093422W WO2017070947A1 WO 2017070947 A1 WO2017070947 A1 WO 2017070947A1 CN 2015093422 W CN2015093422 W CN 2015093422W WO 2017070947 A1 WO2017070947 A1 WO 2017070947A1
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Prior art keywords
coordinated
cell
base station
terminal
activation request
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PCT/CN2015/093422
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English (en)
Chinese (zh)
Inventor
胡钰舒
沈磊
张振华
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2018521942A priority Critical patent/JP2018532346A/ja
Priority to PCT/CN2015/093422 priority patent/WO2017070947A1/fr
Priority to CN201580071564.7A priority patent/CN107113854A/zh
Publication of WO2017070947A1 publication Critical patent/WO2017070947A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications, and in particular, to a cooperative scheduling method, apparatus, and system.
  • a heterogeneous network may include a macro base station and a small base station.
  • a small base station may be used to increase the network capacity.
  • LTE Long Term Evolution
  • the macro base station and the small base station can be deployed in the same frequency deployment mode. The same frequency deployment refers to the macro base station and the small base station.
  • the frequency of transmission is the same, the frequency is the number given to the frequency, and each frequency (accurate to integer) corresponds to a frequency value (accurate to 0.1MHZ).
  • a cooperative scheme needs to be adopted between the macro base station and the small base station.
  • the macro base station and the small base station can further improve the network capacity and user experience through close cooperation.
  • the macro base station has a relatively high transmission power, a large coverage area, and a small base station has a relatively low transmission power, and is mainly used for hotspot coverage.
  • the macro base station usually covers far more terminals than the small base station covers, and the load is heavier than the small base station. . Therefore, the existing macro base station and small base station cooperation schemes are basically that the terminals under the macro base station are coordinated by the macro base station and the small base station to help the macro base station reduce the load to improve the capacity of the entire network, wherein the coordinated scheduling refers to For the same terminal, the macro base station and the small base station determine the scheduling scheme through negotiation.
  • the control plane of the terminal under the macro base station remains in the macro base station, and the data plane is coordinated by the macro base station and the small base station.
  • the small base station sends a physical downlink control channel to the macro base station (English: Physical Downlink Control Channel; PDCCH for short)
  • the macro base station allocates a PDCCH resource to the terminal according to the request, and feeds back the allocation result to the small base station;
  • the small base station performs a physical downlink shared channel (English: Physical Downlink Shared Channel; PDSCH) or physical according to the allocation result.
  • Scheduling of the uplink shared channel (English: Physical Uplink Shared Channel; abbreviated as: PUSCH).
  • the load of the macro base station is relatively heavy, and the PDCCH resources of the macro base station are limited, the PDCCH resources of the macro base station are likely to be all occupied, and the terminal that cannot be allocated to the PDCCH resource cannot be scheduled, which affects the success rate of the coordinated scheduling. Therefore, the efficiency of collaborative scheduling is low.
  • the present invention provides a cooperative scheduling method, device and system.
  • the technical solution is as follows:
  • the present invention is applied to a HetNet network, and is particularly applicable to an LTE HetNet network, and implements coordinated scheduling of a macro base station and a small base station in the same frequency deployment process.
  • the present invention provides a cooperative scheduling method for a small base station, including:
  • the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station perform coordinated scheduling of the coordinated terminal on the physical downlink control channel PDCCH, where
  • the cooperative terminal is a terminal that can be cooperatively scheduled by the macro base station or the small base station;
  • the first coordinated activation request may be generated by the macro base station according to the cell configuration parameter sent by the small base station managing the first cell, and the cell configuration parameter may include PCI, PCI is used to identify the physical layer cell identification number of the cell.
  • the cell configuration parameter may also include other parameters, such as cell-related channel parameters.
  • the control message, the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second coordinated activation request includes: the first The physical cell of the cell identifies the PCI.
  • the first coordinated activation request is generated according to multiple scenarios, where different coordinated channels are different, and the first coordinated activation request is used to indicate the first Coordinating scheduling of the coordinated terminal by the cell and the macro base station on the PDCCH and the physical downlink shared channel (PDSCH), or the first coordinated request is used to indicate that the first cell and the macro base station are in the PDCCH, Performing coordinated scheduling of the coordinated terminal on the PDSCH and the physical uplink shared channel PUSCH, where the control message is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on the PDSCH, in the receiving After the first coordinated activation request sent by the macro base station, the method further includes:
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a PUSCH, or the first coordinated activation request is used to indicate The first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH, where the control message is used to indicate that the first cell and the macro base station perform the cooperation on the PUSCH.
  • Cooperative scheduling of terminals is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a PUSCH, or the first coordinated activation request is used to indicate The first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH, where the control message is used to indicate that the first cell and the macro base station perform the cooperation on the PUSCH.
  • the method further includes:
  • the method before receiving the first coordinated activation request sent by the macro base station, the method further includes:
  • the cell configuration parameter is reported to the macro base station, where the cell configuration parameter includes: the physical cell identifier PCI.
  • the first coordinated activation request includes: an identifier of the coordinated terminal, where the method further sends a control message on a PDCCH of the first cell according to the first coordinated activation request.
  • the uplink data message includes a channel parameter that is measured by the coordinated terminal, and after the sending, by the first coordinated request, the control message on the PDCCH of the first cell, the method further includes: :
  • the second deactivation notification is used to notify the cooperating terminal to stop co-scheduling.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier
  • the small base station allocates PDCCH resources independently for the cooperative terminal, and the macro base station activates the cooperative function in the coordinated terminal by using the first coordinated activation request, and instructs the coordinated terminal to parse the control message transmitted on the PDCCH of the first cell of the small base station. To ensure the unity of the upstream control plane and the data plane.
  • the present invention provides a cooperative scheduling method, which is used by a macro base station or a small base station to perform coordinated scheduling, and the cooperative terminal may be a device with a network connection function, such as A smart phone, a computer, a multimedia player, an e-reader, a wearable device, etc.
  • the collaborative scheduling method comprising:
  • the macro base station determines, when the terminal is able to enter the coordinated state, the cell that needs to perform coordinated scheduling, where the second coordinated activation request includes: the PCI of the first cell; the second collaboration The activation request can be carried in the MAC notification.
  • the receiving, by the second cooperative activation request, the control message sent by the small base station that manages the first cell, on the PDCCH of the first cell includes:
  • the acquiring, by the PCI, the transmit frequency of the small base station, the cell bandwidth of the first cell, and the number of PDCCH symbols of the first cell including:
  • the measured cell bandwidth of the PCI corresponding cell is used as the cell bandwidth of the first cell
  • the number of PDCCH symbols of the PCI corresponding cell measured on the physical control indication channel PCFICH of the PCI corresponding cell is used as the PDCCH symbol number of the first cell.
  • the second coordinated activation request includes an agreed transmission time interval TTI identifier, where
  • the receiving, by the second cooperative activation request, the control message sent by the small base station that manages the first cell, on the PDCCH of the first cell, includes:
  • the collaborative terminal may be configured with a collaborative scheduling module, where the module may be a software module for performing a coordinated scheduling function. After receiving the second coordinated activation request, the collaborative scheduling module starts, and the collaborative scheduling function is activated. After receiving the de-cooperative activation request, the co-scheduling module is closed.
  • the cooperative terminal can sense the cooperative scheduling process of the macro base station and the small base station.
  • the present invention provides a cooperative scheduling method for a macro base station, including:
  • the activation request is used to indicate that the first cell managed by the small base station and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH;
  • a second coordinated activation request Sending, to the coordinated terminal that needs to perform coordinated scheduling, a second coordinated activation request, so that the coordinated terminal receives the control message on the PDCCH of the first cell according to the second coordinated activation request, where the second coordinated activation
  • the request is used to indicate that the coordinated terminal accepts the coordinated scheduling of the first cell and the macro base station on a PDCCH, where the second coordinated activation request includes: a PCI of the first cell.
  • the method before the sending, by the small cell that manages the first cell, the first coordinated activation request, the method further includes:
  • the first coordinated activation request is generated, where the first coordinated activation request is used to indicate that the first cell and the macro base station perform the coordinated terminal on a PDCCH and a physical downlink shared channel PDSCH.
  • Cooperative scheduling, or the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical uplink shared channel PUSCH, or the first The cooperative activation request is used to instruct the first cell and the macro base station to perform coordinated scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier; and the second coordinated activation request includes the agreed transmission time interval TTI identifier.
  • the present invention provides a cooperative scheduling apparatus for a small base station, including:
  • a first receiving unit configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station perform on a physical downlink control channel PDCCH Cooperative scheduling of cooperative terminals, the coordinated terminal is a macro base station or a small base station a terminal capable of cooperative scheduling;
  • a first sending unit configured to send, according to the first coordinated activation request, a control message on a PDCCH of the first cell, so that the coordinated terminal is configured according to a second coordinated activation request sent by the macro base station
  • the control message is received on the PDCCH of the first cell, where the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, and the second coordinated activation
  • the request includes: a physical cell identifier PCI of the first cell.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical downlink shared channel PDSCH, or the first coordinated activation
  • the request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH, a PDSCH, and a physical uplink shared channel (PUSCH), where the control message is used to indicate the first cell and the macro base
  • the cooperative scheduling of the coordinated terminal is performed on the PDSCH, and the device further includes:
  • a second sending unit configured to send, according to the first coordinated activation request, a downlink data message to the coordinated terminal on a PDSCH of the first cell, so that the coordinated terminal is in the first
  • the downlink data message is received on a PDSCH of a cell.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a PUSCH, or the first coordinated activation request is used to indicate The first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH, where the control message is used to indicate that the first cell and the macro base station perform the cooperation on the PUSCH.
  • the cooperative scheduling of the terminal, the device further includes:
  • a second receiving unit configured to receive, according to the first coordinated activation request, an uplink data message sent by the coordinated terminal on a PUSCH of the first cell, where the uplink data message is that the coordinated terminal is according to the control The message was sent.
  • the device further includes:
  • the reporting unit is configured to report the cell configuration parameter to the macro base station after the first cell is activated, where the cell configuration parameter includes: the physical cell identifier PCI.
  • the first collaborative activation request includes: the identifier of the collaborative terminal, and the device further includes:
  • a generating unit configured to generate, according to the first coordinated activation request, the control message, where the control message includes an identifier of the coordinated terminal.
  • the uplink data message includes a channel parameter that is measured by the coordinated terminal, and the device further includes:
  • a determining unit configured to determine, according to the channel parameter, whether the collaborative terminal can maintain a coordinated state
  • a third sending unit configured to send a first deactivation notification to the macro base station when the coordinated terminal cannot maintain the coordinated state, where the first deactivation notification is used to notify the macro base station to stop performing coordinated scheduling;
  • a fourth sending unit configured to send a deactivation notification to the coordinated terminal, where the second deactivation notification is used to notify the cooperating terminal to stop co-scheduling.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier
  • the first sending unit is configured to:
  • the present invention provides a cooperative scheduling apparatus, which is used by a coordinated terminal, and the coordinated terminal is a terminal that can be cooperatively scheduled by a macro base station or a small base station, and includes:
  • a first receiving unit configured to receive a second coordinated activation request sent by the macro base station, where the second coordinated activation request is used to indicate that the coordinated terminal accepts coordinated scheduling of the first cell and the macro base station on a PDCCH
  • the first cell is a cell that is determined by the macro base station to determine that a terminal is capable of entering a coordinated state
  • the second coordinated activation request includes: a PCI of the first cell
  • a second receiving unit configured to receive, according to the second coordinated activation request, a control message sent by the small base station that manages the first cell, on a PDCCH of the first cell.
  • the second receiving unit includes:
  • Obtaining a subunit configured to acquire, according to the PCI, a transmission frequency point of the small base station, a cell bandwidth of the first cell, and a PDCCH symbol number of the first cell;
  • Determining a subunit configured to determine a location of a PDCCH of the first cell according to the transmit frequency point, the cell bandwidth, and the number of PDCCH symbols;
  • a receiving subunit configured to receive, by using a location of a PDCCH of the first cell, a control message sent by a small base station that manages the first cell.
  • the acquiring subunit is configured to:
  • the measured cell bandwidth of the PCI corresponding cell is used as the cell bandwidth of the first cell
  • the number of PDCCH symbols of the PCI corresponding cell measured on the physical control indication channel PCFICH of the PCI corresponding cell is used as the PDCCH symbol number of the first cell.
  • the second coordinated activation request includes an agreed transmission time interval TTI identifier
  • the second receiving unit is configured to:
  • a cooperative scheduling apparatus for a macro base station, including:
  • a determining unit configured to determine, when determining that the existing terminal can enter the coordinated state, determine the first cell that needs to perform coordinated scheduling
  • a first sending unit configured to send a first cooperative activation request to the small base station that manages the first cell, so that the small base station sends a control on the PDCCH of the first cell according to the first coordinated activation request
  • the first cooperative activation request is used to indicate that the first cell managed by the small base station and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH, where the coordinated terminal is determined by the macro base station or the small base station.
  • a second sending unit configured to send a second coordinated activation request to the coordinated terminal that needs to perform coordinated scheduling, so that the coordinated terminal is in the first cell according to the second coordinated activation request
  • the device further includes:
  • a generating unit configured to generate the first coordinated activation request, where the first coordinated request is used to indicate that the first cell and the macro base station are on a PDCCH and a physical downlink shared channel PDSCH Performing cooperative scheduling of the coordinated terminal, or the first cooperative activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical uplink shared channel PUSCH, or The first coordinated activation request is used to instruct the first cell and the macro base station to perform coordinated scheduling of the coordinated terminal on a PDCCH, a PDSCH, and a PUSCH.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier; and the second coordinated activation request includes the agreed transmission time interval TTI identifier.
  • the present invention provides a cooperative scheduling apparatus for a small base station, including: a transmitter, a receiver, and a processor,
  • the transmitter is configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station perform on a physical downlink control channel PDCCH Collaborative scheduling of the coordinated terminal, where the coordinated terminal is a terminal that can be cooperatively scheduled by the macro base station or the small base station;
  • the receiver configured to send, according to the first coordinated activation request, a control message on a PDCCH of the first cell, so that the coordinated terminal is configured according to a second coordinated activation request sent by the macro base station
  • the control message is received on the PDCCH of the first cell, where the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, and the second coordinated activation
  • the request includes: a physical cell identifier PCI of the first cell.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical downlink shared channel (PDSCH), or
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform cooperative scheduling of the coordinated terminal on a PDCCH, a PDSCH, and a physical uplink shared channel (PUSCH), where the control message is used to indicate the first a cell and the macro base station perform coordinated scheduling of the coordinated terminal on the PDSCH, after the first coordinated activation request sent by the receiving macro base station,
  • the transmitter is further configured to send, according to the first coordinated activation request, a downlink data message to the coordinated terminal on a PDSCH of the first cell, so that the coordinated terminal is in the foregoing according to the control message.
  • the downlink data message is received on a PDSCH of a cell.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a PUSCH, or the first coordinated activation request is used to indicate The first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH, where the control message is used to indicate that the first cell and the macro base station perform the cooperation on the PUSCH.
  • a cooperative scheduling of the terminal the receiver, configured to receive, according to the first coordinated activation request, an uplink data message sent by the coordinated terminal on a PUSCH of the first cell, where the uplink data message is the collaboration The terminal sends according to the control message.
  • the transmitter is further configured to report the cell configuration parameter to the macro base station after the first cell is activated, where the cell configuration parameter includes: the physical cell identifier PCI.
  • the first coordinated activation request includes: an identifier of the coordinated terminal, where the processor generates the control message according to the first coordinated activation request according to the first coordinated activation request
  • the control message includes an identifier of the collaborative terminal.
  • the uplink data message includes a channel parameter measured by the coordinated terminal, where
  • the processor is further configured to determine, according to the channel parameter, whether the coordinated terminal can maintain a coordinated state
  • the transmitter is further configured to send a first deactivation notification to the macro base station when the coordinated terminal cannot maintain a coordinated state, where the first deactivation notification is used to notify the macro base station to stop performing coordinated scheduling;
  • the transmitter is further configured to send a deactivation notification to the collaborative terminal, the second deactivation notification And configured to notify the coordinated terminal to stop co-scheduling.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier, and the transmitter is configured to send a control message on a PDCCH of the first cell at a TTI indicated by the agreed TTI identifier.
  • the present invention provides a cooperative scheduling apparatus, configured to cooperate with a terminal, where the coordinated terminal is a macro base station or a small base station, and can perform cooperative scheduling, including: a receiver, a transmitter, and a processor.
  • the receiver is configured to receive a second coordinated activation request sent by the macro base station, where the second coordinated activation request is used to indicate that the coordinated terminal accepts coordinated scheduling of the first cell and the macro base station on a PDCCH, where
  • the first cell is a cell that is determined by the macro base station to determine that a terminal is capable of entering a coordinated state, and the second coordinated activation request includes: a PCI of the first cell;
  • the receiver is further configured to receive, according to the second coordinated activation request, a control message sent by a small base station that manages the first cell on a PDCCH of the first cell.
  • the processor is configured to acquire, according to the PCI, a transmit frequency point of the small base station, a cell bandwidth of the first cell, and a PDCCH symbol number of the first cell;
  • the processor is further configured to determine a location of a PDCCH of the first cell according to the transmit frequency point, the cell bandwidth, and the number of PDCCH symbols;
  • the receiver is configured to receive, by using a location of a PDCCH of the first cell, a control message sent by a small base station that manages the first cell.
  • the processor is configured to:
  • the measured cell bandwidth of the PCI corresponding cell is used as the cell bandwidth of the first cell
  • the number of PDCCH symbols of the PCI corresponding cell measured on the physical control indication channel PCFICH of the PCI corresponding cell is used as the PDCCH symbol number of the first cell.
  • the second coordinated activation request includes an agreed transmission time interval TTI identifier
  • the receiver is configured to receive, according to the TTI indicated by the agreed TTI, the management of the first on the PDCCH of the first cell. Control message sent by the small base station of the cell.
  • the present invention provides a cooperative scheduling apparatus for a macro base station, including: a receiver, a transmitter, and a processor,
  • the processor is configured to determine, when determining that the presence terminal can enter the coordinated state, the first cell that needs to perform coordinated scheduling;
  • the transmitter is configured to send a first coordinated activation request to the small base station that manages the first cell, so that the small base station sends a control message on the PDCCH of the first cell according to the first coordinated activation request.
  • the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH, and the coordinated terminal is capable of performing coordination determined by the macro base station or the small base station. Dispatched terminal;
  • the transmitter is configured to send a second coordinated activation request to a coordinated terminal that needs to perform coordinated scheduling, so that the coordinated terminal receives the control message on a PDCCH of the first cell according to the second coordinated activation request, where
  • the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second coordinated activation request includes: a PCI of the first cell.
  • the processor is further configured to:
  • the first coordinated activation request is generated, where the first coordinated activation request is used to indicate that the first cell and the macro base station perform the coordinated terminal on a PDCCH and a physical downlink shared channel PDSCH.
  • Cooperative scheduling, or the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical uplink shared channel PUSCH, or the first The cooperative activation request is used to instruct the first cell and the macro base station to perform coordinated scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier; and the second coordinated activation request includes the agreed transmission time interval TTI identifier.
  • the present invention provides a cooperative scheduling system, including: a macro base station, a small base station, and a coordinated terminal, where the coordinated terminal is a terminal that can be cooperatively scheduled by a macro base station or a small base station,
  • the small base station includes the cooperative scheduling apparatus according to any one of the fourth aspects;
  • the terminal includes the cooperative scheduling apparatus according to any one of the fifth aspects;
  • the macro base station includes the cooperative scheduling apparatus of any of the sixth aspects.
  • the present invention provides a cooperative scheduling system, including: a macro base station, a small base station, and a coordinated terminal, where the coordinated terminal is a terminal that can be cooperatively scheduled by a macro base station or a small base station,
  • the small base station includes the cooperative scheduling apparatus according to any one of the seventh aspects;
  • the terminal includes the cooperative scheduling apparatus according to any one of the eighth aspects;
  • the macro base station includes the cooperative scheduling apparatus of any of the ninth aspects.
  • the present invention provides a non-transitory computer readable storage medium, when instructions in the storage medium are executed by a processor of a cooperative scheduling apparatus, enabling the apparatus to perform a cooperative scheduling method, the method comprising:
  • the cooperative terminal is a terminal that can be cooperatively scheduled by the macro base station or the small base station;
  • the control message, the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second coordinated activation request includes: the first The physical cell of the cell identifies the PCI.
  • the present invention provides a non-transitory computer readable storage medium, when instructions in the storage medium are executed by a processor of a cooperative scheduling apparatus, enabling the apparatus to perform a cooperative scheduling method, the method comprising:
  • the second coordinated activation request includes: a PCI of the first cell;
  • the present invention provides a non-transitory computer readable storage medium, when instructions in the storage medium are executed by a processor of a cooperative scheduling apparatus, enabling the apparatus to perform a cooperative scheduling method, the method comprising:
  • the activation request is used to indicate that the first cell managed by the small base station and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH;
  • a second coordinated activation request Sending, to the coordinated terminal that needs to perform coordinated scheduling, a second coordinated activation request, so that the coordinated terminal receives the control message on the PDCCH of the first cell according to the second coordinated activation request, where the second coordinated activation
  • the request is used to indicate that the coordinated terminal accepts the coordinated scheduling of the first cell and the macro base station on a PDCCH, where the second coordinated activation request includes: a PCI of the first cell.
  • the control plane and the data plane of the coordinated terminal are unified to the small base station for processing, thereby fully utilizing the PDCCH resource of the small base station, alleviating the probability that the macro base station PDCCH resource is limited, and reducing the overall algorithm complexity of the IPRAN networking. Degree, improve the reliability of collaborative scheduling.
  • the PDCCH resource of the small base station is fully utilized, and the PDSCH resource does not need to be occupied, and the downlink capacity of the network is not affected.
  • the cooperative scheduling method provided by the embodiment of the present invention may also be applied to other implementation scenarios, such as a scenario in which a MCE is used to notify a PDCCH parameter; in a case where a HetNet macro base station and a small base station inter-frequency networking are used, a scenario in which a coordinated cell shares a PDCCH; A scenario in which a macro base station cooperates with a macro base station to cooperate with a cell to share a PDCCH.
  • a MCE is used to notify a PDCCH parameter
  • a HetNet macro base station and a small base station inter-frequency networking are used, a scenario in which a coordinated cell shares a PDCCH
  • a scenario in which a macro base station cooperates with a macro base station to cooperate with a cell to share a PDCCH For a specific application process, refer to the process of the foregoing embodiment, and details are not described herein again.
  • Some related algorithms of the present invention may be related to a reference protocol, for example, the 3rd Generation Partnership Project (English: the 3rd Generation Partnership Project; 3GPP) TS 36.211: Physical channels and modulation; 3GPP TS 36.212: Multiplexing and channel coding; 3GPP TS 36.213: Physical layer procedures, where TS represents This document is a technical specification.
  • the cooperative scheduling method, apparatus, and system provided by the embodiments of the present invention may be implemented by the small base station, according to the first coordinated activation request, sending a control message on the PDCCH of the first cell managed by the small base station, and implementing the small base station as
  • the cooperative terminal allocates PDCCH resources, and even if the PDCCH resources of the macro base station are all occupied, the cooperative terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the efficiency of the coordinated scheduling.
  • the coordinated scheduling refers to the same terminal (in the embodiment of the present invention, the coordinated terminal), and the macro base station and the small base station determine the scheduling scheme through negotiation.
  • the small base station manages the The coordinated scheduling of the coordinated terminal by the eNB and the macro eNB on the PDCCH means that the small base station can send a control message to the coordinated terminal by using the PDCCH of the first cell, and the macro base station can send the control message to the coordinated terminal by using the PDCCH of the macro base station.
  • the time at which the two control messages are sent is determined in advance; the cooperative scheduling of the cooperative terminal by the first cell and the macro base station on the PDSCH means that the small base station can send the downlink data to the coordinated terminal by using the PDSCH of the first cell.
  • the macro base station may send downlink data to the cooperative terminal through the PDSCH of the macro base station, and the time at which the downlink data is sent by the macro base station is determined in advance; the first cell and the macro base station perform coordinated terminal on the PUSCH.
  • Cooperative scheduling means that the small base station can send uplink data to the coordinated terminal through the PUSCH of the first cell.
  • the uplink data transmission message, the macro base station via a macro base station transmits uplink data to the PUSCH cooperative terminal, uplink data transmission time both negotiated in advance.
  • 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 actions performed by the first receiving unit and the second receiving unit may be performed by one receiving unit, the first sending unit, the second sending unit, the third sending unit, and the The action performed by the fourth transmitting unit may be performed by one transmitting unit; in the cooperative scheduling apparatus provided in the above fifth aspect, the actions performed by the first receiving unit and the second receiving unit may be performed by one receiving unit; In the cooperative scheduling apparatus, the actions performed by the first transmitting unit and the second transmitting unit may be performed by one transmitting unit.
  • 1-1 is a schematic diagram of an implementation environment involved in a collaborative scheduling method according to an embodiment of the present invention
  • FIGS. 1-2 are schematic diagrams showing an implementation environment involved in another collaborative scheduling method according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a collaborative scheduling method according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another collaborative scheduling method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of still another collaborative scheduling method according to an embodiment of the present invention.
  • 5-1 is a flowchart of a collaborative scheduling method according to another embodiment of the present invention.
  • FIG. 5-2 is a flowchart of a method for receiving, by a coordinated terminal, a control message sent by a small base station that manages the first cell on a PDCCH of the first cell according to the second coordinated activation request according to the second embodiment of the present invention.
  • FIG. 6 is a flowchart of another collaborative scheduling method according to another embodiment of the present invention.
  • FIG. 7 is a flowchart of still another collaborative scheduling method according to another embodiment of the present invention.
  • 8-1 is a schematic structural diagram of a cooperative scheduling apparatus according to an embodiment of the present invention.
  • FIG. 8-2 is a schematic structural diagram of another cooperative scheduling apparatus according to an embodiment of the present invention.
  • FIG. 8-3 is a schematic structural diagram of still another cooperative scheduling apparatus according to an embodiment of the present invention.
  • FIG. 8-4 is a schematic structural diagram of still another cooperative scheduling apparatus according to an embodiment of the present invention.
  • FIG. 8-5 is a schematic structural diagram of a cooperative scheduling apparatus according to another embodiment of the present invention.
  • FIG. 8-6 is a schematic structural diagram of another cooperative scheduling apparatus according to another embodiment of the present invention.
  • 9-1 is a schematic structural diagram of still another cooperative scheduling apparatus according to another embodiment of the present invention.
  • 9-2 is a schematic structural diagram of a second receiving unit according to another embodiment of the present invention.
  • FIG. 10-1 is a schematic structural diagram of still another cooperative scheduling apparatus according to another embodiment of the present invention.
  • 10-2 is a schematic structural diagram of a cooperative scheduling apparatus according to another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another cooperative scheduling apparatus according to another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of still another cooperative scheduling apparatus according to another embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of still another cooperative scheduling apparatus according to another embodiment of the present invention.
  • the spectrum resources and the power resources are limited, but the number of terminals (which can be regarded as the number of users) and the amount of traffic in each communication cell are different.
  • the communication system cannot only consider a part of the terminals, and needs to reasonably allocate resources. Allocation, so that the terminal households in the communication system can communicate normally and well.
  • This method or strategy of allocation is a scheduling algorithm or scheduling technique.
  • the process of allocating resources to a terminal through a scheduling algorithm or scheduling technique may be referred to as scheduling.
  • FIG. 1-1 is a schematic diagram of an implementation environment involved in a collaborative scheduling method according to an embodiment of the present invention.
  • the implementation environment may be a HetNet of LTE.
  • the implementation environment includes: a macro base station 110, at least one small base station 120, and at least one terminal 130.
  • the macro base station 110 and the at least one small base station 120 form a HetNet, where each small base station 120 At least one cell 1201 is managed, and the at least one terminal 130 includes a coordinated terminal 1301, which is an object that the macro base station 110 and the small base station 120 need to perform coordinated scheduling, and is determined by the macro base station 110 or the small base station 120.
  • the macro base station 110 and the small base station 120 perform network deployment in the same frequency deployment manner, that is, the macro base station 110 and the small base station 120 use the same transmission frequency point, and the macro base station 110 and the small base station 120 enhances network capacity and user experience by co-scheduling the collaborative terminal 1301.
  • the terminal 130 can be a smart phone, a computer, a multimedia player, an e-reader, a wearable device, or the like.
  • 1-2 are schematic diagrams showing an implementation environment involved in another collaborative scheduling method according to an embodiment of the present invention.
  • the macro base station 110 and the small base station 120 perform cooperative scheduling on the cooperative terminal 1301, and the macro base station 110 and the small base station 120 can perform data communication with the cooperative terminal 1301 through the wireless link, respectively, the macro base station 110 and the small base station 120.
  • Data transmission can be performed over the Ethernet with the core network device 140.
  • the embodiment of the present invention provides a cooperative scheduling method, which is used in a small base station as shown in FIG. 1-1 or 1-2.
  • the collaborative scheduling method includes:
  • Step 201 Receive a first coordinated activation request sent by a macro base station, where the first coordinated activation request is used. Performing coordinated scheduling of the coordinated terminal on the physical downlink control channel PDCCH by the first cell and the macro base station that are instructed by the small base station;
  • Step 202 Send a control message on the PDCCH of the first cell according to the first coordinated activation request, so that the coordinated terminal receives the control message on the PDCCH of the first cell according to the second coordinated activation request sent by the macro base station.
  • the second coordinated activation request is used to indicate that the coordinated terminal accepts the coordinated scheduling of the first cell and the macro base station on the PDCCH, where the second coordinated activation request includes: a physical cell identifier of the first cell (English: Physical Cell ID; abbreviation: PCI) .
  • the small base station may send a control message on the PDCCH of the first cell managed by the small base station according to the first coordinated activation request, so that the small base station allocates the PDCCH to the coordinated terminal.
  • Resources even if the PDCCH resources of the macro base station are all occupied, the cooperative terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the efficiency of the coordinated scheduling.
  • the embodiment of the present invention provides a cooperative scheduling method, which is used in the collaborative terminal shown in Figure 1-1 or 1-2.
  • the collaborative scheduling method includes:
  • Step 301 Receive a second coordinated activation request sent by the macro base station, where the second coordinated activation request is used to indicate that the coordinated terminal accepts the coordinated scheduling of the first cell and the macro base station on the PDCCH, where the first cell is a macro base station, When entering the coordinated state, the cells that need to perform coordinated scheduling are determined.
  • the second coordinated activation request includes: a PCI of the first cell; the cell that needs to perform coordinated scheduling is determined for the coordinated terminal, that is, the macro base station determines the cell of the small base station that is scheduled for the coordinated terminal, and the coordinated terminal is the Acer base.
  • Step 302 Receive, according to the second coordinated activation request, a control message sent by the small base station managing the first cell on the PDCCH of the first cell.
  • the cooperative terminal can receive the small management of the first cell on the PDCCH of the first cell according to the second coordinated activation request sent by the macro base station.
  • the control message sent by the base station enables the small base station to allocate the PDCCH resource to the coordinated terminal. Even if the PDCCH resources of the macro base station are all occupied, the coordinated terminal can receive the PDCCH resource allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the coordinated scheduling. Success rate, which improves the efficiency of collaborative scheduling.
  • the embodiment of the present invention provides a cooperative scheduling method, which is used in the macro base station shown in Figure 1-1 or 1-2. As shown in Figure 4, the method includes:
  • Step 401 When it is determined that the existing terminal can enter the coordinated state, determine the first cell that needs to perform coordinated scheduling.
  • the cell that needs to perform coordinated scheduling is determined for the coordinated terminal, that is, the macro base station determines the cell of the small base station that is scheduled for the coordinated terminal, and the coordinated terminal is the terminal that can be cooperatively scheduled by the macro base station or the small base station.
  • Step 402 Send a first coordinated activation request to the small base station that manages the first cell, so that the small base station sends a control message on the PDCCH of the first cell according to the first coordinated activation request, where the first coordinated activation request is used to indicate the small base station.
  • the managed first cell and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH.
  • Step 403 Send a second coordinated activation request to the coordinated terminal that needs to perform coordinated scheduling, so that the coordinated terminal receives the control message on the PDCCH of the first cell according to the second coordinated activation request.
  • the second coordinated activation request is used to indicate that the coordinated terminal accepts the coordinated scheduling of the first cell and the macro base station on the PDCCH, where the second coordinated activation request includes: the PCI of the first cell.
  • the macro base station may send a first coordinated activation request to the small base station managing the first cell, and send a second coordinated activation request to the coordinated terminal, so that the coordinated base station can
  • the second cooperative activation request sent by the macro base station receives the control message sent by the small cell that manages the first cell on the PDCCH of the first cell, so that the small base station allocates the PDCCH resource to the coordinated terminal, even if the PDCCH resources of the macro base station are all occupied.
  • the cooperative terminal can also receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success of the coordinated scheduling. Rate, which improves the efficiency of collaborative scheduling.
  • the first cell may share the channel with the macro base station in the PDCCH and the physical downlink (English: Physical Downlink Shared Channel) (referred to as: PDSCH) and the physical uplink shared channel (English: Physical Uplink Shared Channel; abbreviated as: PUSCH) for collaborative scheduling of cooperative terminals, or with the macro base station for cooperative scheduling of coordinated terminals on the PDCCH and the PDSCH, or The macro base station performs coordinated scheduling of the coordinated terminals on the PDCCH and the physical uplink shared channel PUSCH.
  • the macro base station performs coordinated scheduling of the coordinated terminals on the PDCCH and the physical uplink shared channel PUSCH.
  • the embodiment of the present invention provides a cooperative scheduling method, which is used in Figure 1-1 or 1-2.
  • the implementation environment, as shown in Figure 5-1, includes:
  • Step 501 After the first cell is activated, the small base station reports the cell configuration parameter of the first cell to the macro base station.
  • the cell configuration parameter of the cell may be sent to the macro base station by using the small cell that manages the cell.
  • the first cell is used as an example. The action of any other cell refers to the first cell.
  • the cell configuration parameter may include: PCI, where the PCI is used to identify the physical layer cell identification number of the cell.
  • PCI Long Term Evolution
  • the value range is 0-503.
  • Step 502 The macro base station determines, when determining that the existing terminal can enter the coordinated state, the first cell that needs to perform coordinated scheduling.
  • the macro base station can determine whether each terminal under the macro base station can enter the coordinated state, and when determining that the terminal can enter the coordinated state, the terminal that can enter the coordinated state is used as the coordinated terminal, and then determines that the coordinated terminal needs to perform coordinated scheduling.
  • a cell, the first cell is a cell managed by a small base station.
  • the macro base station may determine, according to a preset cooperative scheduling algorithm, whether each terminal under the macro base station can enter a coordinated state, and the coordinated scheduling algorithm may be determined based on channel parameters measured by the terminal, for example, dynamic node selection (English: Dynamic Point)
  • the selection (referred to as the DPS) algorithm which is also referred to as the cell dynamic node selection algorithm, may be referred to the related technology in the specific calculation process, and will not be described in detail in the embodiments of the present invention.
  • the channel parameters are used to reflect the current channel conditions.
  • the action of determining whether each terminal in the macro base station can enter the coordinated state may also be performed by the small base station, and the small base station reports the coordinated terminal to the macro base station after determining the coordinated terminal, which is not performed by the embodiment of the present invention. limited.
  • Step 503 The macro base station generates a first coordinated activation request and a second coordinated activation request.
  • the macro base station may determine a channel that needs to be cooperatively scheduled according to the conditions of the respective channels of the macro base station, such as the PDCCH, the PDSCH, and the PUSCH.
  • the embodiment assumes that the macro base station determines the small base station according to its own channel condition.
  • the first cell can perform coordinated scheduling with the macro eNB in the PDCCH, the PDSCH, and the PUSCH, and the PDCCH, the PDSCH, and the PUSCH all need to be coordinated, and the first coordinated activation request is used to indicate that the first cell and the macro base station are in the PDCCH, the PDSCH, and the Cooperative scheduling of the coordinated terminal is performed on the PUSCH.
  • the second coordinated activation request is used to instruct the coordinated terminal to accept cooperative scheduling of the first cell and the macro base station on the PDCCH, the PDSCH, and the PUSCH.
  • Step 504 The macro base station sends a first coordinated activation request to the small base station managing the first cell.
  • the first coordinated activation request first cooperative activation request is used to indicate that the first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH, and according to the first coordinated activation request, the small base station may activate the cooperation of the small base station.
  • the first collaborative activation request may include an identifier of the collaborative terminal.
  • Step 505 The macro base station sends a second coordinated activation request to the coordinated terminal that needs to perform coordinated scheduling.
  • the small base station After the first cell is activated in step 501, the small base station has reported the cell configuration parameter of the first cell to the macro base station, where the cell configuration parameter includes the PCI of the first cell, and in step 502, it is determined that the first cell can perform coordinated scheduling. Then, the macro base station acquires the PCI of the first cell and generates a second coordinated activation request carrying the PCI in each of the pre-stored cell configuration parameters, and sends the second coordinated activation request to the coordinated terminal.
  • the second coordinated activation request may be carried in a Radio Resource Control (RRC) message.
  • RRC Radio Resource Control
  • Step 506 The small base station sends a control message on the PDCCH of the first cell according to the first coordinated activation request.
  • the small base station activates its own coordinated function according to the first coordinated activation request, and the first coordinated request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH.
  • the small base station may allocate the PDCCH resource to the coordinated terminal. Therefore, the small base station may send the control message on the PDCCH of the first cell according to the first coordinated activation request.
  • Step 507 The cooperative terminal receives, on the PDCCH of the first cell, a control message sent by the small base station that manages the first cell according to the second coordinated activation request.
  • the second coordinated activation request is used to indicate that the coordinated terminal accepts the coordinated scheduling of the first cell and the macro base station on the PDCCH, the PDSCH, and the PUSCH, where the second coordinated activation request includes: a PCI of the first cell,
  • the cooperative terminal After the cooperative terminal receives the second coordinated activation request sent by the macro base station, the cooperative terminal activates its own coordinated scheduling function.
  • the collaborative terminal may be configured with a collaborative scheduling module, configured to perform a coordinated scheduling function. After receiving the second coordinated activation request, the collaborative scheduling module starts and activates the coordinated scheduling function.
  • the macro base station notifies the PCI of the first cell of the cooperative terminal by using the second coordinated activation request, so that the coordinated terminal can receive and parse the control message transmitted by the first cell through the PDCCH, which lays a foundation for the unification of the control plane and the data plane.
  • the second coordinated activation request may be carried in a media access control (English: Media Control Control; MAC) element (English: MAC Control Element; MCE for short) notification.
  • the coordinated terminal may reply the macro base station with an activation confirmation message, and after receiving the activation confirmation message, the macro base station determines that the collaborative terminal activates the coordinated scheduling function, and then triggers step 506 to be small.
  • the action of the base station transmitting the control message on the PDCCH of the first cell can ensure the validity of the control message transmission, and avoid sending the control message when the coordinated terminal cannot perform the coordinated scheduling.
  • the cooperative terminal receives, according to the second coordinated activation request, a process of managing a control message sent by the small base station of the first cell on the PDCCH of the first cell.
  • Step 5101 The cooperative terminal acquires a transmission frequency point of the small base station, a cell bandwidth of the first cell, and a PDCCH symbol number of the first cell according to the PCI.
  • the macro base station may send information to the cooperative terminal in advance to inform the transmission frequency point to configure the transmission frequency point in the coordinated terminal, so the cooperative terminal may acquire the pre-configured transmission frequency.
  • the cooperative terminal can measure the channel parameters of the current cell and the neighboring cell of the current cell in real time, the channel parameter may include the cell bandwidth, and therefore, the measured PCI corresponding cell (ie, the first cell) may be obtained.
  • the cell bandwidth is used as the cell bandwidth of the first cell; and the coordinated terminal is measured on the physical control format indicator channel (English: Physical Control Format Indicator Channel; PCFICH) of the PCI corresponding cell (ie, the first cell).
  • the number of PDCCH symbols of the PCI corresponding cell is used as the number of PDCCH symbols of the first cell.
  • Step 5072 The coordinated terminal determines the location of the PDCCH of the first cell according to the transmission frequency point, the cell bandwidth, and the number of PDCCH symbols.
  • the coordinated terminal may determine the location of the PDCCH according to a preset channel algorithm according to a transmission frequency point, a cell bandwidth, and a PDCCH symbol number, and the preset channel algorithm may be related to a reference protocol, for example, a third generation partner project (English: the 3rd Generation Partnership Project; abbreviation: 3GPP) TS 36.211: Physical channels and modulation; 3GPP TS 36.212: Multiplexing and channel coding; 3GPP TS 36.213: Physical layer procedure (Physical layer procedures), where TS indicates that the file is a technical specification file.
  • a third generation partner project English: the 3rd Generation Partnership Project; abbreviation: 3GPP
  • 3GPP TS 36.211 Physical channels and modulation
  • 3GPP TS 36.212 Multiplexing and channel coding
  • 3GPP TS 36.213 Physical layer procedure (Physical layer procedures), where TS indicates that the file is a technical specification file.
  • Step 5073 The cooperative terminal receives a control message sent by the small base station managing the first cell at a location of the PDCCH of the first cell.
  • the coordinated terminal can blindly check the PDCCH of the first cell, and acquires the control message when the control message is mapped on the PDCCH of the first cell.
  • the small base station may generate a control message according to the first coordinated activation request, where the control message includes an identifier of the coordinated terminal.
  • the process of the small base station transmitting the control message on the PDCCH of the first cell is actually a process of mapping the control message to the PDCCH of the first cell, and the coordinated terminal may be in the first cell according to the second coordinated activation request.
  • control message Obtaining the control message, and determining whether the control message carries the identifier of the coordinated terminal, and when the control message carries the identifier of the coordinated terminal, determining that the control message is sent to the coordinated terminal, When the control message does not carry the identifier of the coordinated terminal, it is determined that the control message is not sent to the coordinated terminal, and the collaborative terminal may discard or delete the control message.
  • Step 508 The collaborative terminal parses the control message.
  • Step 509 The small base station sends a downlink data message on the PDSCH of the first cell according to the first coordinated activation request.
  • the first cooperative activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH.
  • the small base station may allocate the PDSCH resource to the first coordinated terminal, and therefore, the small base station may send the downlink data message to the coordinated terminal on the PDSCH of the first cell.
  • the small base station may separately allocate the PDCCH resource to the coordinated terminal, and the macro base station activates the coordinated function in the coordinated terminal by using the first coordinated activation request, and instructs the coordinated terminal to parse the control of the PDCCH transmission on the first cell of the small base station.
  • the message ensures the unity of the control plane and the data plane.
  • Step 510 The cooperative terminal receives the downlink data message on the PDSCH of the first cell according to the control message, and parses the downlink data message.
  • the coordinated terminal receives the control message, where the control message may carry related parameters for receiving the downlink data message (such as a parameter indicating the location of the PDSCH of the first cell), and therefore, the coordinated terminal is in accordance with the control message.
  • a downlink data message is received on the PDSCH of a cell, and the downlink data message is parsed.
  • the specific process can refer to relevant protocols, for example: 3GPP TS 36.211; 3GPP TS 36.212; 3GPP TS 36.213. This embodiment of the present invention does not describe this.
  • Step 511 The coordinated terminal sends an uplink data message on the PUSCH of the first cell according to the control message.
  • the macro base station determines that the first cell of the small base station can perform coordinated scheduling with the macro base station in the PDCCH, the PDSCH, and the PUSCH.
  • the coordinated terminal receives the control message, where the control message may be carried for sending.
  • the relevant parameter of the uplink data message (such as a parameter indicating the location of the PUSCH of the first cell), therefore, the coordinated terminal can send the uplink data message on the PUSCH of the first cell according to the control message.
  • Step 512 The small base station receives the uplink data message sent by the coordinated terminal on the PUSCH of the first cell according to the first coordinated activation request, and parses the uplink data message.
  • Step 513 The small base station determines whether the coordinated terminal can maintain the coordinated state.
  • the uplink data message in step 512 may include channel parameters measured by the coordinated terminal, and the small base station may determine, according to a preset coordinated scheduling algorithm, whether the coordinated terminal can maintain a coordinated state, and the coordinated scheduling algorithm may be based on the channel measured by the terminal.
  • the parameter is determined, for example, the DPS algorithm, which is also referred to as a cell dynamic node selection algorithm.
  • the channel parameters measured by the terminal are carried in the uplink data message, and the specific calculation process may refer to related technologies, which is not described in detail in the embodiment of the present invention.
  • the small base station may also report the channel parameters carried in the uplink data message to the macro base station, and the macro base station determines whether the coordinated terminal can maintain the coordinated state, and the process of determining whether the coordinated terminal can maintain the coordinated state by the macro base station may refer to related technologies. The present invention will not be described again.
  • Step 514 The small base station sends a first deactivation notification to the macro base station when the coordinated terminal cannot maintain the coordinated state, where the first deactivation notification is used to notify the macro base station to stop performing coordinated scheduling.
  • the macro base station may stop co-scheduling.
  • Step 515 The small base station sends a deactivation notification to the coordinated terminal, where the second deactivation notification is used to notify the coordinated terminal to stop performing coordinated scheduling.
  • the cooperating terminal may close its co-scheduling function and stop co-scheduling.
  • the collaborative terminal may be configured with a cooperative scheduling module. It is used to perform the cooperative scheduling function. After receiving the deactivation notification, the collaborative scheduling module is closed, and the cooperative scheduling function is disabled. At this time, the cooperative terminal is equivalent to the occurrence of one handover, but the cooperative terminal does not perceive, and has no effect on the key performance indicator (English: Key Performance Indicator; KPI for short).
  • the small base station may send a control message on the PDCCH of the first cell managed by the small base station according to the first coordinated activation request, so that the small base station allocates the PDCCH to the coordinated terminal.
  • Resources even if the PDCCH resources of the macro base station are all occupied, the cooperative terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the efficiency of the coordinated scheduling.
  • the embodiment of the present invention provides a cooperative scheduling method, which is used in the implementation shown in FIG. 1-1 or 1-2.
  • the environment, as shown in Figure 6, includes:
  • Step 601 After the first cell is activated, the small base station reports the cell configuration parameter of the first cell to the macro base station.
  • step 601 reference may be made to the foregoing step 501, which is not repeatedly described in the embodiment of the present invention.
  • Step 602 The macro base station determines, when determining that the existing terminal can enter the coordinated state, the first cell that needs to perform coordinated scheduling.
  • the step 602 can refer to the foregoing step 502, which is not repeatedly described in the embodiment of the present invention.
  • Step 603 The macro base station generates a first coordinated activation request and a second coordinated activation request.
  • the macro base station may determine a channel that needs to be cooperatively scheduled according to the conditions of the respective channels of the macro base station, such as the PDCCH, the PDSCH, and the PUSCH.
  • the embodiment assumes that the macro base station determines the small base station according to its own channel condition.
  • the first cell can perform coordinated scheduling on the PDCCH and the PDSCH and the macro base station, and the PDCCH and the PDSCH both need to be coordinated.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated terminals on the PDCCH and the PDSCH.
  • Cooperatively scheduling, correspondingly, the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH and a PDSCH.
  • Step 604 The base station sends a first coordinated activation request to the small base station managing the first cell.
  • the first coordinated activation request first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH and the PDSCH, and according to the first coordinated activation request, the small base station may activate the cooperative function of the small base station.
  • the first collaborative activation request may include an identifier of the coordinated terminal.
  • Step 605 The macro base station sends a second coordinated activation request to the coordinated terminal that needs to perform coordinated scheduling.
  • step 605 reference may be made to the foregoing step 505, which is not described in detail in the embodiment of the present invention.
  • Step 606 The small base station sends a control message on the PDCCH of the first cell according to the first coordinated activation request.
  • the small base station activates its own coordinated function according to the first coordinated activation request, and the first coordinated request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH and the PDSCH.
  • the small base station may allocate the PDCCH resource to the coordinated terminal. Therefore, the small base station may send the control message on the PDCCH of the first cell according to the first coordinated activation request.
  • Step 607 The cooperative terminal receives, according to the second coordinated activation request, a control message sent by the small base station managing the first cell on the PDCCH of the first cell.
  • step 607 reference may be made to the foregoing step 507, which is not repeatedly described in the embodiment of the present invention.
  • Step 608 The collaborative terminal parses the control message.
  • Step 609 The small base station sends a downlink data message on the PDSCH of the first cell according to the first coordinated activation request.
  • the first cooperative activation request is used to indicate that the first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH and the PDSCH.
  • the small base station may allocate the PDSCH resource to the first coordinated terminal, and therefore, the small base station may send the downlink data message to the coordinated terminal on the PDSCH of the first cell.
  • the small base station allocates PDCCH resources independently for the cooperative terminal, and the macro base station activates the cooperative function in the coordinated terminal by using the first coordinated activation request, and instructs the coordinated terminal to parse the small base station.
  • the control message transmitted on the PDCCH of the first cell ensures the unification of the downlink control plane and the data plane.
  • Step 610 The cooperative terminal receives the downlink data message on the PDSCH of the first cell according to the control message, and parses the downlink data message.
  • step 610 reference may be made to the foregoing step 510, which is not repeatedly described in the embodiment of the present invention.
  • Step 611 The cooperative terminal sends an uplink data message on the PUSCH of the macro base station.
  • the macro base station determines that the first cell of the small base station can perform coordinated scheduling with the macro base station on the PDCCH and the PDSCH, but cannot perform coordinated scheduling on the PUSCH. Therefore, the coordinated terminal can send the uplink data message on the PUSCH of the macro base station. .
  • Step 612 The macro base station receives the uplink data message sent by the coordinated terminal on the PUSCH of the macro base station, and parses the uplink data message.
  • Step 613 The macro base station determines whether the coordinated terminal can maintain the coordinated state.
  • the uplink data message in step 612 may include channel parameters measured by the coordinated terminal, and the macro base station may determine, according to a preset coordinated scheduling algorithm, whether the coordinated terminal can maintain a coordinated state, and the coordinated scheduling algorithm may be based on the channel measured by the terminal.
  • the parameter is determined, for example, the DPS algorithm, which is also referred to as a cell dynamic node selection algorithm.
  • the channel parameters measured by the terminal are carried in the uplink data message, and the specific calculation process may refer to related technologies, which is not described in detail in the embodiment of the present invention.
  • Step 614 The macro base station sends a deactivation request to the small base station and the coordinated terminal respectively when the coordinated terminal cannot maintain the coordinated state.
  • the macro base station may separately send a deactivation request to the small base station and the coordinated terminal, where the deactivation request is used to notify the small base station and the coordinated terminal to stop co-scheduling.
  • the macro base station and the small base station that have received the deactivation request respectively turn off their own cooperative scheduling functions, and stop the coordinated scheduling.
  • the deactivation request sent to the coordinated terminal includes the PCI of the first cell, and the deactivation request sent to the small base station includes the terminal identifier of the coordinated terminal.
  • the cooperating terminal may close its co-scheduling function and stop co-scheduling.
  • the collaborative terminal may be configured with a cooperative scheduling module, configured to perform a coordinated scheduling function, and after receiving the deactivation notification, the collaborative scheduling module is closed, and the coordinated scheduling function is disabled.
  • the collaborative terminal is equivalent to happening A switch is made, but the collaborative terminal does not sense it and has no effect on the KPI.
  • the small base station may send a control message on the PDCCH of the first cell managed by the small base station according to the first coordinated activation request, so that the small base station allocates the PDCCH to the coordinated terminal.
  • Resources even if the PDCCH resources of the macro base station are all occupied, the cooperative terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the efficiency of the coordinated scheduling.
  • the embodiment of the present invention provides a cooperative scheduling method, which is used in the implementation shown in FIG. 1-1 or 1-2.
  • the environment, as shown in Figure 7, includes:
  • Step 701 After the first cell is activated, the small base station reports the cell configuration parameter of the first cell to the macro base station.
  • step 701 reference may be made to the foregoing step 501, which is not repeatedly described in the embodiment of the present invention.
  • Step 702 The macro base station determines, when determining that the existing terminal can enter the coordinated state, the first cell that needs to perform coordinated scheduling.
  • the step 702 can refer to the foregoing step 502, which is not repeatedly described in the embodiment of the present invention.
  • Step 703 The macro base station generates a first coordinated activation request and a second coordinated activation request.
  • the macro base station may determine a channel that needs to be cooperatively scheduled according to the conditions of the respective channels of the macro base station, such as the PDCCH, the PDSCH, and the PUSCH.
  • the embodiment assumes that the macro base station determines the small base station according to its own channel condition.
  • the first cell can perform coordinated scheduling on the PDCCH and the PUSCH and the macro base station, and the PDCCH and the PUSCH both need to be coordinated, and the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated terminals on the PDCCH and the PUSCH.
  • the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH and a PUSCH.
  • Step 704 The macro base station sends a first coordinated activation request to the small base station managing the first cell.
  • the first coordinated activation request first cooperative activation request is used to indicate that the first cell and the macro base station are Cooperative scheduling of the coordinated terminal is performed on the PDCCH and the PUSCH.
  • the small base station may activate the cooperative function of the small base station according to the first coordinated activation request, where the first coordinated activation request may include the identifier of the coordinated terminal.
  • Step 705 The macro base station sends a second coordinated activation request to the coordinated terminal that needs to perform coordinated scheduling.
  • the small base station After the first cell is activated in step 501, the small base station has reported the cell configuration parameter of the first cell to the macro base station, where the cell configuration parameter includes the PCI of the first cell, and in step 502, it is determined that the first cell can perform coordinated scheduling. Then, the macro base station acquires the PCI of the first cell and generates a second coordinated activation request carrying the PCI in each of the pre-stored cell configuration parameters, and sends the second coordinated activation request to the coordinated terminal.
  • the second coordinated activation request may be carried in an RRC: Radio Resource Control (RRC) message.
  • RRC Radio Resource Control
  • Step 706 The small base station sends a control message on the PDCCH of the first cell according to the first coordinated activation request.
  • the small base station activates its own coordinated function according to the first coordinated activation request, and the first coordinated request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on the PDSCH and the PUSCH.
  • the small base station may allocate the PDCCH resource to the coordinated terminal. Therefore, the small base station may send the control message on the PDCCH of the first cell according to the first coordinated activation request.
  • Step 707 The cooperative terminal receives, according to the second coordinated activation request, a control message sent by the small base station managing the first cell on the PDCCH of the first cell.
  • step 707 reference may be made to the foregoing step 507, which is not repeatedly described in the embodiment of the present invention.
  • Step 708 The collaborative terminal parses the control message.
  • Step 709 The macro base station sends a downlink data message to the coordinated terminal on the PDSCH of the macro base station.
  • the cooperative activation request is used to indicate that the first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH and the PUSCH, but the coordinated scheduling cannot be performed on the PDSCH.
  • the macro base station can allocate PDCCH resources to the coordinated terminal, and therefore, the macro base station can reach the coordinated terminal on the PDSCH of the macro base station. Send a downlink data message.
  • the small base station allocates PDCCH resources independently for the cooperative terminal, and the macro base station activates the cooperative function in the coordinated terminal by using the first coordinated activation request, and instructs the coordinated terminal to parse the control message transmitted on the PDCCH of the first cell of the small base station. To ensure the unity of the upstream control plane and the data plane.
  • Step 710 The cooperative terminal receives the downlink data message on the PDSCH of the macro base station, and parses the downlink data message.
  • Step 711 The coordinated terminal sends an uplink data message on the PUSCH of the first cell according to the control message.
  • the macro base station determines that the first cell of the small base station can perform coordinated scheduling on the PDCCH and the PUSCH and the macro base station.
  • the coordinated terminal receives the control message, where the control message may carry the uplink data.
  • a related parameter of the message such as a parameter indicating the location of the PUSCH of the first cell. Therefore, the cooperative terminal can send an uplink data message on the PUSCH of the first cell according to the control message.
  • Step 712 The small base station receives, according to the first coordinated activation request, an uplink data message sent by the coordinated terminal on the PUSCH of the first cell, and parses the uplink data message.
  • Step 713 The small base station determines whether the coordinated terminal can maintain the coordinated state.
  • the uplink data message in step 712 may include channel parameters measured by the coordinated terminal, and the small base station may determine, according to a preset coordinated scheduling algorithm, whether the coordinated terminal can maintain a coordinated state, and the coordinated scheduling algorithm may be based on the channel measured by the terminal.
  • the parameter is determined, for example, the DPS algorithm, which is also referred to as a cell dynamic node selection algorithm.
  • the channel parameters measured by the terminal are carried in the uplink data message, and the specific calculation process may refer to related technologies, which is not described in detail in the embodiment of the present invention.
  • Step 714 The small base station sends a first deactivation notification to the macro base station when the coordinated terminal cannot maintain the coordinated state, where the first deactivation notification is used to notify the macro base station to stop performing coordinated scheduling.
  • the macro base station may stop co-scheduling.
  • Step 715 The small base station sends a second deactivation notification to the coordinated terminal, where the second deactivation notification is used to notify the coordinated terminal to stop performing coordinated scheduling.
  • the cooperating terminal may close its co-scheduling function and stop co-scheduling. After receiving the second deactivation notification, the cooperating terminal may close its co-scheduling function and stop co-scheduling.
  • the collaborative terminal may be configured with a cooperative scheduling module, configured to perform a coordinated scheduling function, and after receiving the deactivation notification, the collaborative scheduling module is closed, and the coordinated scheduling function is disabled. At this time, the cooperative terminal is equivalent to the occurrence of one handover, but the cooperative terminal does not perceive, and has no effect on the KPI.
  • the small base station may send a control message on the PDCCH of the first cell managed by the small base station according to the first coordinated activation request, so that the small base station allocates the PDCCH to the coordinated terminal.
  • Resources even if the PDCCH resources of the macro base station are all occupied, the cooperative terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the efficiency of the coordinated scheduling.
  • the first coordinated activation request generated by the macro base station includes an agreed transmission time interval (English: Transmission Time Interval; The abbreviation (TTI) identifier
  • the second coordinated activation request also includes the agreed TTI identifier
  • the TTI setting may be performed, so that the macro base station, the small base station, and the The cooperative terminal starts the TTI function at the same time, and the small base station sends data on the PDCCH and the PDSCH in the TTI specified by the macro base station, and receives data on the PUSCH, and the cooperative terminal parses the data on the PDCCH and the data on the PDSCH in the TTI specified by the macro base station. Data is transmitted on the PUSCH.
  • the process of the small base station transmitting the control message on the PDCCH of the first cell according to the first coordinated activation request may include:
  • the process in which the coordinated terminal receives the control message sent by the small base station of the first cell on the PDCCH of the first cell according to the second coordinated activation request may include:
  • the control message sent by the small base station managing the first cell is received on the PDCCH of the first cell in the TTI indicated by the TTI identifier.
  • IPRAN Internet Protocol Radio Access Network
  • IPRAN Internet Protocol Radio Access Network
  • the small base station applies for PDCCH resources to the macro base station through the Ethernet network, and the delay of the Ethernet network has a great influence on the entire collaborative scheduling process.
  • the delay is relatively large, the PDCCH resources allocated by the macro base station cannot be immediately applied to the scheduling result of the small base station, which brings about problems such as improved complexity of the entire cooperative scheduling algorithm, reduced reliability of cooperative scheduling, and increased probability of wasted PDCCH resources.
  • the control plane and the data plane of the coordinated terminal are unified to the small base station for processing, thereby fully utilizing the PDCCH resource of the small base station, alleviating the probability that the macro base station PDCCH resource is limited, and reducing the overall algorithm complexity of the IPRAN networking. Degree, improve the reliability of collaborative scheduling.
  • the PDCCH resource of the small base station is fully utilized, and the PDSCH resource does not need to be occupied, and the downlink capacity of the network is not affected.
  • the cooperative scheduling method provided by the embodiment of the present invention may also be applied to other implementation scenarios, such as a scenario in which a MCE is used to notify a PDCCH parameter; in a case where a HetNet macro base station and a small base station inter-frequency networking are used, a scenario in which a coordinated cell shares a PDCCH; A scenario in which a macro base station cooperates with a macro base station to cooperate with a cell to share a PDCCH.
  • a MCE is used to notify a PDCCH parameter
  • a HetNet macro base station and a small base station inter-frequency networking are used, a scenario in which a coordinated cell shares a PDCCH
  • a scenario in which a macro base station cooperates with a macro base station to cooperate with a cell to share a PDCCH For a specific application process, refer to the process of the foregoing embodiment, and details are not described herein again.
  • the embodiment of the present invention provides a cooperative scheduling apparatus 80, which is used for a small base station, as shown in Figure 8-1, and includes:
  • the first receiving unit 801 is configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station are on a physical downlink control channel PDCCH. Perform cooperative scheduling of the coordinated terminal;
  • the first sending unit 802 is configured to send, according to the first coordinated activation request, a control message on a PDCCH of the first cell, so that the coordinated terminal sends a control message according to the second coordinated activation request sent by the macro base station.
  • the control message is received on the PDCCH of the first cell, where the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second collaboration is performed.
  • the activation request includes: a physical cell identifier PCI of the first cell.
  • the cooperative scheduling apparatus can implement the small control unit to send a control message on the PDCCH of the first cell managed by the small base station according to the first coordinated activation request received by the receiving unit,
  • the base station allocates PDCCH resources to the coordinated terminal. Even if the PDCCH resources of the macro base station are all occupied, the coordinated terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the cooperative scheduling. effectiveness.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical downlink shared channel PDSCH, or the first coordinated activation The request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH, a PDSCH, and a physical uplink shared channel (PUSCH), where the control message is used to indicate the first cell and the macro base
  • the cooperative device performs coordinated scheduling of the coordinated terminal on the PDSCH.
  • the device 80 may include:
  • the first receiving unit 801 is configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station are on a physical downlink control channel PDCCH. Perform cooperative scheduling of the coordinated terminal;
  • the first sending unit 802 is configured to send, according to the first coordinated activation request, a control message on a PDCCH of the first cell, so that the coordinated terminal sends a control message according to the second coordinated activation request sent by the macro base station.
  • the live request is used to indicate that the coordinated terminal accepts the coordinated scheduling of the first cell and the macro base station on the PDCCH, where the second coordinated activation request includes: a physical cell identifier PCI of the first cell.
  • a second sending unit 803 configured to send, according to the first coordinated activation request, a downlink data message to the coordinated terminal on a PDSCH of the first cell, so that the collaborative terminal is configured according to the control message according to the The downlink data message is received on the PDSCH of the first cell.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a PUSCH, or the first coordinated activation request is used to indicate The first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH, where the control message is used to indicate that the first cell and the macro base station perform the cooperation on the PUSCH.
  • the cooperative scheduling of the terminal as shown in Figure 8-3, the device 80 may include:
  • the first receiving unit 801 is configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station are on a physical downlink control channel PDCCH. Perform cooperative scheduling of the coordinated terminal;
  • the first sending unit 802 is configured to send, according to the first coordinated activation request, a control message on a PDCCH of the first cell, so that the coordinated terminal sends a control message according to the second coordinated activation request sent by the macro base station.
  • the control message is received on the PDCCH of the first cell, where the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second collaboration is performed.
  • the activation request includes: a physical cell identifier PCI of the first cell.
  • the second receiving unit 804 is configured to receive, according to the first coordinated activation request, an uplink data message sent by the coordinated terminal on a PUSCH of the first cell, where the uplink data message is that the collaborative terminal is according to the Control messages are sent.
  • the device 80 may include:
  • the first receiving unit 801 is configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station are on a physical downlink control channel PDCCH. Perform cooperative scheduling of the coordinated terminal;
  • the first sending unit 802 is configured to send, according to the first coordinated activation request, a control message on a PDCCH of the first cell, so that the coordinated terminal sends a control message according to the second coordinated activation request sent by the macro base station.
  • the control message is received on the PDCCH of the first cell, where the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second collaboration is performed.
  • the activation request includes: a physical cell identifier PCI of the first cell.
  • the reporting unit 805 is configured to report the cell configuration parameter to the macro base station after the first cell is activated, where the cell configuration parameter includes: the physical cell identifier PCI.
  • the macro base station may generate a first activation request carrying the PCI according to the cell configuration parameter.
  • the first collaborative activation request includes: an identifier of the coordinated terminal, as shown in FIG. 8-5, the device 80 may include:
  • the first receiving unit 801 is configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station are on a physical downlink control channel PDCCH. Perform cooperative scheduling of the coordinated terminal;
  • the first sending unit 802 is configured to send, according to the first coordinated activation request, a control message on a PDCCH of the first cell, so that the coordinated terminal sends a control message according to the second coordinated activation request sent by the macro base station.
  • the control message is received on the PDCCH of the first cell, where the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second collaboration is performed.
  • the activation request includes: a physical cell identifier PCI of the first cell.
  • the generating unit 806 is configured to generate the control message according to the first coordinated activation request, where the control message includes an identifier of the collaborative terminal.
  • the uplink data message includes a channel parameter that is measured by the coordinated terminal.
  • the device 80 may include:
  • the first receiving unit 801 is configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station are on a physical downlink control channel PDCCH. Perform cooperative scheduling of the coordinated terminal;
  • a first sending unit 802 configured to be in the first cell according to the first coordinated activation request Sending a control message on the PDCCH, so that the coordinated terminal receives the control message on the PDCCH of the first cell according to the second coordinated activation request sent by the macro base station, where the second coordinated activation request is used to indicate the location
  • the cooperative terminal accepts the coordinated scheduling of the first cell and the macro base station on the PDCCH, where the second coordinated activation request includes: a physical cell identifier PCI of the first cell.
  • the second receiving unit 804 is configured to receive, according to the first coordinated activation request, an uplink data message sent by the coordinated terminal on a PUSCH of the first cell, where the uplink data message is that the collaborative terminal is according to the Controlling the sending of messages;
  • the determining unit 807 is configured to determine, according to the channel parameter, whether the collaborative terminal can maintain a coordinated state
  • the third sending unit 808 is configured to send a first deactivation notification to the macro base station when the coordinated terminal cannot maintain the coordinated state, where the first deactivation notification is used to notify the macro base station to stop performing coordinated scheduling;
  • the fourth sending unit 809 is configured to send a deactivation notification to the coordinated terminal, where the second deactivation notification is used to notify the cooperative terminal to stop performing coordinated scheduling.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier
  • the first sending unit 802 is configured to:
  • the cooperative scheduling apparatus can implement the small control unit to send a control message on the PDCCH of the first cell managed by the small base station according to the first coordinated activation request received by the receiving unit,
  • the base station allocates PDCCH resources to the coordinated terminal. Even if the PDCCH resources of the macro base station are all occupied, the coordinated terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the cooperative scheduling. effectiveness.
  • the present invention provides a cooperative scheduling apparatus 90 for a coordinated terminal, as shown in FIG. 9-1, including:
  • the first receiving unit 901 is configured to receive a second coordinated activation request sent by the macro base station, where the second coordinated activation request is used to indicate that the coordinated terminal accepts the coordinated scheduling of the first cell and the macro base station on a PDCCH.
  • the first cell is a cell that is determined by the macro base station to determine that a terminal can enter a coordinated state, and the second coordinated activation request includes: a PCI of the first cell;
  • the second receiving unit 902 is configured to receive, according to the second coordinated activation request, a control message sent by the small base station that manages the first cell, on a PDCCH of the first cell.
  • the second coordinated activation request includes an agreed transmission time interval TTI identifier
  • the second receiving unit 902 is configured to: receive, on the PDCCH of the first cell, a TTI indicated by the agreed TTI identifier. And managing a control message sent by the small base station of the first cell.
  • the cooperative scheduling apparatus may receive, by the second receiving unit, the small base station that manages the first cell, according to the second coordinated activation request received by the first receiving unit, on the PDCCH of the first cell.
  • the control message is implemented by the small base station to allocate the PDCCH resource to the coordinated terminal. Even if the PDCCH resources of the macro base station are all occupied, the coordinated terminal can receive the PDCCH resource allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling. , thereby improving the efficiency of collaborative scheduling.
  • the second receiving unit 902 includes:
  • the obtaining sub-unit 9021 is configured to acquire, according to the PCI, a transmission frequency point of the small base station, a cell bandwidth of the first cell, and a PDCCH symbol number of the first cell;
  • a determining subunit 9022 configured to determine a location of a PDCCH of the first cell according to the transmitting frequency point, the cell bandwidth, and the number of PDCCH symbols;
  • the receiving subunit 9023 is configured to receive, by using a location of the PDCCH of the first cell, a control message sent by the small base station that manages the first cell.
  • the obtaining subunit 9021 is configured to:
  • the measured cell bandwidth of the PCI corresponding cell is used as the cell bandwidth of the first cell
  • the number of PDCCH symbols of the PCI corresponding cell measured on the physical control indication channel PCFICH of the PCI corresponding cell is used as the PDCCH symbol number of the first cell.
  • the cooperative scheduling apparatus may receive, by the second receiving unit, the small base station that manages the first cell, according to the second coordinated activation request received by the first receiving unit, on the PDCCH of the first cell.
  • the control message is implemented by the small base station to allocate the PDCCH resource to the coordinated terminal. Even if the PDCCH resources of the macro base station are all occupied, the coordinated terminal can receive the PDCCH resource allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling. , thereby improving the efficiency of collaborative scheduling.
  • the embodiment of the present invention provides a cooperative scheduling apparatus 01, which is used in a macro base station, as shown in Figure 10-1, and includes:
  • a determining unit 011 configured to determine, when determining that the existing terminal can enter the coordinated state, determine the first cell that needs to perform coordinated scheduling
  • the first sending unit 012 is configured to send a first cooperative activation request to the small base station that manages the first cell, so that the small base station sends the PDCCH on the PDCCH of the first cell according to the first coordinated activation request.
  • a control message where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH;
  • a second sending unit 013 configured to send a second coordinated activation request to the coordinated terminal that needs to perform coordinated scheduling, so that the coordinated terminal receives the control on the PDCCH of the first cell according to the second coordinated activation request.
  • a message, the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second coordinated activation request includes: a PCI of the first cell .
  • the first sending unit may send the first coordinated activation request to the small base station managing the first cell
  • the second sending unit may send the second coordinated activation request to the coordinated terminal.
  • the cooperative base station may receive, according to the second coordinated activation request sent by the macro base station, a control message sent by the small base station that manages the first cell on the PDCCH of the first cell, to implement
  • the small base station allocates PDCCH resources to the coordinated terminal. Even if the PDCCH resources of the macro base station are all occupied, the coordinated terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the coordination. The efficiency of scheduling.
  • the device 01 may include:
  • a determining unit 011 configured to determine, when determining that the existing terminal can enter the coordinated state, determine the first cell that needs to perform coordinated scheduling
  • the first sending unit 012 is configured to send a first cooperative activation request to the small base station that manages the first cell, so that the small base station sends the PDCCH on the PDCCH of the first cell according to the first coordinated activation request.
  • a control message where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH;
  • a second sending unit 013 configured to send a second coordinated activation request to the coordinated terminal that needs to perform coordinated scheduling, so that the coordinated terminal receives the control on the PDCCH of the first cell according to the second coordinated activation request.
  • a message, the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second coordinated activation request includes: a PCI of the first cell ;
  • a generating unit 014 configured to generate the first coordinated activation request, where the first coordinated request is used to indicate that the first cell and the macro base station are in a PDCCH and a physical downlink shared channel PDSCH
  • the cooperative scheduling of the coordinated terminal is performed, or the first coordinated request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical uplink shared channel PUSCH, Or the first cooperative activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH, a PDSCH, and a PUSCH.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier; and the second coordinated activation request includes the agreed transmission time interval TTI identifier.
  • the first sending unit may send the first coordinated activation request to the small base station managing the first cell
  • the second sending unit may send the coordinated terminal to the coordinated terminal.
  • the cooperative terminal can receive the PDCCH resources allocated by the small base station, ensure the effective scheduling of the coordinated terminal, and ensure the success rate of the coordinated scheduling, thereby improving the efficiency of the coordinated scheduling.
  • the embodiment of the present invention provides a cooperative scheduling system, which may include: a macro base station, a small base station, and a terminal, where the small base station includes the cooperative scheduling apparatus 80 shown in any of FIG. 8-1 to 8-6; The cooperative scheduling apparatus 90 shown in FIG. 9-1; the macro base station includes the cooperative scheduling apparatus 01 shown in FIG. 10-1 or 10-2.
  • the embodiment of the present invention provides a cooperative scheduling apparatus 02, which is used for a small base station, as shown in FIG. 11, and includes: a transmitter 021, a receiver 022, and a processor 023.
  • the transmitter 021 is configured to receive a first coordinated activation request sent by the macro base station, where the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station are on a physical downlink control channel PDCCH. Perform cooperative scheduling of the coordinated terminal;
  • the receiver 022 is configured to send, according to the first coordinated activation request, a control message on a PDCCH of the first cell, so that the coordinated terminal sends a control message according to the second coordinated activation request sent by the macro base station.
  • the control message is received on the PDCCH of the first cell, where the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second collaboration is performed.
  • the activation request includes: a physical cell identifier PCI of the first cell.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical downlink shared channel PDSCH, or the first coordinated activation The request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH, a PDSCH, and a physical uplink shared channel (PUSCH), where the control message is used to indicate the first cell and the macro base Standing on the PDSCH to perform the collaborative terminal Cooperative scheduling, after the first coordinated activation request sent by the receiving macro base station,
  • PUSCH physical uplink shared channel
  • the transmitter 021 is further configured to send, according to the first coordinated activation request, a downlink data message to the coordinated terminal on a PDSCH of the first cell, so that the coordinated terminal is configured according to the control message.
  • the downlink data message is received on the PDSCH of the first cell.
  • the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a PUSCH, or the first coordinated activation request is used to indicate The first cell and the macro base station perform cooperative scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH, where the control message is used to indicate that the first cell and the macro base station perform the cooperation on the PUSCH.
  • a cooperative scheduling of the terminal, the receiver 022 configured to receive, according to the first coordinated activation request, an uplink data message sent by the coordinated terminal on a PUSCH of the first cell, where the uplink data message is The cooperating terminal transmits according to the control message.
  • the transmitter 021 is further configured to report the cell configuration parameter to the macro base station after the first cell is activated, where the cell configuration parameter includes: the physical cell identifier PCI.
  • the first coordinated activation request includes: an identifier of the coordinated terminal, where the processor 023 generates the control according to the first coordinated activation request according to the first coordinated activation request.
  • the message, the control message includes an identifier of the collaborative terminal.
  • the uplink data message includes a channel parameter measured by the coordinated terminal, where
  • the processor 023 is further configured to determine, according to the channel parameter, whether the coordinated terminal can maintain a coordinated state
  • the transmitter 021 is further configured to: when the coordinated terminal cannot maintain the coordinated state, send a first deactivation notification to the macro base station, where the first deactivation notification is used to notify the macro base station to stop performing coordinated scheduling;
  • the transmitter 021 is further configured to send a deactivation notification to the cooperating terminal, where the second deactivation notification is used to notify the cooperating terminal to stop co-scheduling.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier, and the transmitter 021 is configured to send a control on the PDCCH of the first cell in the TTI indicated by the agreed TTI identifier. Message.
  • the embodiment of the present invention provides a cooperative scheduling apparatus 03 for a coordinated terminal.
  • the present invention includes a receiver 031, a transmitter 032, and a processor 033.
  • the receiver 031 is configured to receive a second coordinated activation request sent by the macro base station, where the second coordinated activation request is used to indicate that the coordinated terminal accepts coordinated scheduling of the first cell and the macro base station on a PDCCH.
  • the first cell is a cell that is determined by the macro base station to determine that a terminal is capable of entering a coordinated state, and the second coordinated activation request includes: a PCI of the first cell;
  • the receiver 031 is further configured to receive, according to the second coordinated activation request, a control message sent by the small base station that manages the first cell on a PDCCH of the first cell.
  • the processor 033 is configured to acquire, according to the PCI, a transmit frequency point of the small base station, a cell bandwidth of the first cell, and a PDCCH symbol number of the first cell.
  • the processor 033 is further configured to determine a location of a PDCCH of the first cell according to the transmit frequency point, the cell bandwidth, and the number of PDCCH symbols;
  • the receiver 031 is configured to receive, by using a location of a PDCCH of the first cell, a control message sent by a small base station that manages the first cell.
  • the processor 033 is configured to:
  • the measured cell bandwidth of the PCI corresponding cell is used as the cell bandwidth of the first cell
  • the number of PDCCH symbols of the PCI corresponding cell measured on the physical control indication channel PCFICH of the PCI corresponding cell is used as the PDCCH symbol number of the first cell.
  • the second coordinated activation request includes an agreed transmission time interval TTI identifier
  • the receiver 031 is configured to receive, according to the TTI indicated by the agreed TTI, the management on the PDCCH of the first cell.
  • the embodiment of the present invention provides a cooperative scheduling apparatus 04 for a macro base station, as shown in FIG. 13, comprising: a receiver 041, a transmitter 042, and a processor 043.
  • the receiver 043 is configured to determine, when determining that a presence terminal can enter a coordinated state, determine a first cell that needs to perform coordinated scheduling;
  • the transmitter 042 is configured to send a first cooperative activation request to the small base station that manages the first cell, so that the small base station sends a control on the PDCCH of the first cell according to the first coordinated activation request.
  • a message, the first coordinated activation request is used to indicate that the first cell managed by the small base station and the macro base station perform coordinated scheduling of the coordinated terminal on the PDCCH;
  • the transmitter 042 is configured to send a second coordinated activation request to the coordinated terminal that needs to perform coordinated scheduling, so that the coordinated terminal receives the control message on the PDCCH of the first cell according to the second coordinated activation request.
  • the second coordinated activation request is used to indicate that the coordinated terminal accepts cooperative scheduling of the first cell and the macro base station on a PDCCH, where the second coordinated activation request includes: a PCI of the first cell.
  • the receiver 043 is further configured to:
  • the first coordinated activation request is generated, where the first coordinated activation request is used to indicate that the first cell and the macro base station perform the coordinated terminal on a PDCCH and a physical downlink shared channel PDSCH.
  • Cooperative scheduling, or the first coordinated activation request is used to indicate that the first cell and the macro base station perform coordinated scheduling of the coordinated terminal on a PDCCH and a physical uplink shared channel PUSCH, or the first The cooperative activation request is used to instruct the first cell and the macro base station to perform coordinated scheduling of the coordinated terminal on the PDCCH, the PDSCH, and the PUSCH.
  • the first coordinated activation request includes an agreed transmission time interval TTI identifier; and the second coordinated activation request includes the agreed transmission time interval TTI identifier.
  • the present invention provides a cooperative scheduling system, including: a macro base station, a small base station, and a terminal,
  • the small base station includes the cooperative scheduling device shown in FIG. 11;
  • the terminal includes the cooperative scheduling device shown in FIG. 12;
  • the macro base station includes the cooperative scheduling apparatus described in FIG.
  • 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 be physically included 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 hardware plus software functional units.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un appareil et un système de planification coopérative, qui se rapportent au domaine des communications. Le procédé consiste : à recevoir une première requête d'activation coopérative envoyée par une macro-station de base, la requête d'activation coopérative étant utilisée pour donner l'instruction à une première cellule gérée par une petite station de base et la macro-station de base de réaliser une planification coopérative d'un terminal coopératif sur un canal de commande de liaison descendante physique (PDCCH) ; et à envoyer un message de commande sur le PDCCH de la première cellule selon la première requête d'activation coopérative, de telle sorte que le terminal coopératif reçoit le message de commande sur le PDCCH de la première cellule selon une seconde requête d'activation coopérative envoyée par la macro-station de base, la seconde requête d'activation coopérative étant utilisée pour donner l'instruction au terminal coopératif d'accepter la planification coopérative de la première cellule et de la macro-station de base sur le PDCCH, et la seconde requête d'activation coopérative comprenant un identificateur de cellule physique (PCI) de la première cellule. La présente invention résout le problème d'une faible efficacité de planification coopérative. La présente invention peut obtenir l'effet d'amélioration de l'efficacité de la planification coopérative. La présente invention s'applique à la planification coopérative.
PCT/CN2015/093422 2015-10-30 2015-10-30 Procédé, appareil et système de planification coopérative WO2017070947A1 (fr)

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JP2018521942A JP2018532346A (ja) 2015-10-30 2015-10-30 協調スケジューリング方法、装置、およびシステム
PCT/CN2015/093422 WO2017070947A1 (fr) 2015-10-30 2015-10-30 Procédé, appareil et système de planification coopérative
CN201580071564.7A CN107113854A (zh) 2015-10-30 2015-10-30 协同调度方法、装置及系统

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WO2020227922A1 (fr) * 2019-05-14 2020-11-19 Nokia Shanghai Bell Co., Ltd. Activation de cellule secondaire

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CN101778428A (zh) * 2009-01-14 2010-07-14 大唐移动通信设备有限公司 一种确定时频资源的方法、系统和装置
CN103297206A (zh) * 2012-02-28 2013-09-11 夏普株式会社 混合自适应重传方法和设备
CN104185261A (zh) * 2013-05-28 2014-12-03 索尼公司 用于在无线通信系统中进行无线通信的方法、装置和系统

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EP2389026B1 (fr) * 2009-01-14 2014-10-22 China Academy of Telecommunications Technology Procédé et système de transmission coordonnée, terminal mobile et appareil côté réseau

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CN101778428A (zh) * 2009-01-14 2010-07-14 大唐移动通信设备有限公司 一种确定时频资源的方法、系统和装置
CN103297206A (zh) * 2012-02-28 2013-09-11 夏普株式会社 混合自适应重传方法和设备
CN104185261A (zh) * 2013-05-28 2014-12-03 索尼公司 用于在无线通信系统中进行无线通信的方法、装置和系统

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020227922A1 (fr) * 2019-05-14 2020-11-19 Nokia Shanghai Bell Co., Ltd. Activation de cellule secondaire

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